This standard applies to hand-held scissor-type grass shears powered by mains electricity, mainly used for grass cutting, with a maximum cutting width of 200mm, and the rated voltage of single-phase appliances is not more than 250V, and the rated voltage of other appliances is not more than 480V. GB 4706.64-2003 Safety of household and similar electrical appliances Part 2: Special requirements for scissor-type grass shears GB4706.64-2003 standard download decompression password: www.bzxz.net

All technical contents of this part of GB4706 are mandatory shoes. GB4706.64--2003/1EC60335-2-94:1999 The IEC60335 series of special safety standards for small categories of electric tools formulated and issued by the SC61F sub-technical committee of the International Electrotechnical Commission (IEC) are:
-Special requirements for walk-behind and hand-held lawn mowers and lawn edge trimmers (corresponding to IEC60335-2-91) Special requirements for walk-controlled electric lawn mowers (corresponding to IEC60335-2-77) Special requirements for scissor-type grass shears corresponding to 1EC60335-2-94) Special requirements for walk-controlled electric lawn scarifiers and loose sand machines (corresponding to IEC60335-2-92) This part is equivalent to IEC60335-2-94:1999 "Safety of household and similar electrical appliances Part 2: Special requirements for scissor-type grass shears".
This part should be used in conjunction with GB4706.1-1998 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements". The part of this part marked with "applicable" indicates that the corresponding provisions in GB4706.1-1998 are applicable; the part of this part marked with "replaced" shall be subject to the provisions in this part. The part of this part marked with "modified" indicates that the relevant content in the corresponding provisions of GB4706.1-1998 shall be subject to the content after modification of this part, while the other contents of the provision shall still apply; the part of this part marked with "added" indicates that in addition to complying with the corresponding provisions of GB4706.1-1998, it shall also comply with the added provisions in this part. IEC has published IEC60335-2-94:2002. Since the corresponding IEC60335-1:2000 has not yet been converted into a national standard, for the convenience of standard reference, this formulation is still equivalent to the IEC60335-2-94:1999 version, and some of the revised contents of IEC60335-2-94:2002 version are added to the text.
The "Note" added in 2.6.2 is changed to the main text. In 8.1, "*The corresponding symbols of GB/T4269.1 can be used" is changed to "*The corresponding symbols of GB/T4269.1 and GB/T4269.3 can be used".
The difference between this part and Chapter 27 of IEC60335-2-94 is that "This chapter of GB4706.1 is not applicable" is changed to "This chapter of GB4706.1 is applicable". The difference is caused by the error in the original text. This part is compiled in accordance with GB/T1.1-2000 "Guidelines for Standardization Work Part 1: Structure and Abbreviation Rules of Standards". Appendix A, Appendix C and Appendix D of this part are normative appendices. This part is proposed by the China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Technical Committee for Standardization of Electric Tools (CAS/TC68) and is responsible for interpretation. This part is under the responsibility of Shanghai Electric Tool Research Institute Drafting. The main drafters of this part: Liu Jiang, Li Bangxie. GB4706.64--2003/1EC60335-2-94:1999 Introduction
Electric tools are divided into hand-held electric tools and portable electric tools according to their operation methods. The safety performance requirements of the two are also different. The International Electrotechnical Commission (IEC) SC61F Sub-Technical Committee "Safety of Electric Tools" has formulated the IEC60745 series of safety standards for hand-held electric tools and the IEC61029 series of safety standards for portable electric tools, which are respectively adopted by the GB3883 series of standards and the GB13960 series of standards. It is the compliance standard for the safety certification of various types of hand-held and portable electric tools. As humans pay more and more attention to the protection of the natural environment, the development of electric tools used for gardening operations is extremely rapid. The International Electrotechnical Commission (IEC) SC61F sub-technical committee began to draft the safety standard for scissor-type grass shears in 1994, formed the draft international standard (61F/146/FDIS) in 1996, and voted to approve the standard text in 1997. The voting report is 61F/227/RVD. IECSC61F is a sub-technical committee in the 61st technical committee "Safety of Household and Similar Electrical Appliances" that specializes in formulating safety standards for electric tools. Electric gardening tools are a small category of electric tools. Since the third edition of IEC60335-1:1991 has been equivalently adopted by GB4706.1-1998, this part shall refer to GB4706.11998 for the general requirements when IEC60335-2-94 is equivalently adopted. 1 Scope
GB 4706.64--2003/IEC 60335-2-94:1999 Safety of household and similar electrical appliances
Special requirements for scissor-type grass shears
This chapter of GB4706.1-1998 is applicable except for the following contents. This part of GB4706 is applicable to hand-held scissor-type grass shears and inlaid grass shears mainly used for grass cutting with a maximum cutting width of 200 mm, powered by mains electricity, with a rated voltage of not more than 250 V for single-phase appliances and not more than 480 V for other appliances. As far as applicable, this part applies to general hazards encountered by all indoor and outdoor appliances. However, the following are not usually considered:
Appliances intended for use by unsupervised children and infirm persons ... Apparatuses intended for children to play with.
Note 101: Attention should be paid to the following:
For appliances intended for use in tropical countries, special requirements may be required: In many countries, the national departments responsible for labor protection have also stipulated special requirements. 2 Definitions
This chapter of GB4706.1-1998 is applicable except for the following. 2.2.9 This clause is replaced by the following:
Normal operation
Means that the appliance is operated at rated voltage, when the load reaches the required rated input power. 2.6.2 This clause is replaced by the following:
Hand-held applianceHand-held portable appliance held by hand during normal operation, including such appliances, which will not maintain their normal working position unless supported by hand or with the help of wheels, rails or similar mechanisms. 2.101
Cutting width Widtn cu
The effective cutting width of the shearing mechanism measured from the inner edge of the first tooth of the blade or shearing blade to the inner edge of the last tooth. 2.102
Scissors type grass shearsA grass shearing machine consisting of at least two blades, at least one of which moves back and forth along a straight line or line. 3 General requirements
The contents of this chapter of GB4706.1-1998 are applicable. 4 General conditions for tests
The contents of this chapter of GB4706.1--1998 are applicable. 5 Blank chapter
6 Classification
This chapter of GB4706.1-1998 is applicable except for the following contents. GB4706.64—2003/1EC60335-2-94:19996.1 This clause is replaced by the following content;
The appliance shall belong to one of the following corresponding protection categories against electric shock: Class II or twist. Verify by observation and corresponding tests.
7 Marking and instructions
This chapter of GB4706.1—1998 is applicable except for the following content. 7.1 This clause adds the following content:
Grass shears shall be marked with the following warnings:
Warning: Read the instructions.
Grass shears shall not be exposed to moisture.
Keep hands away from the blades.
The corresponding symbols of GB/T4269.1 and GB/T4269.3 may be used. Unless the symbol is cast, raised or stamped without coloring, the color of the symbol shall comply with the provisions of GB2893. It is permitted to replace the warning sentence with a graphic such as that shown in Appendix AA. If a graphic is used, its meaning shall be explained in the applicable instructions. 7.12 This clause is replaced by the following:
The instructions for use shall include the following safety instructions that must be followed during the preparation, operation and maintenance of the appliance (as applicable and in the corresponding order) and the warning sentences listed in 7.1 marked on the appliance: Check the supply cord and extension cord (if any) regularly for signs of damage or ageing; - The supply cord and extension cord (if any) must not be used if they are damaged or aged; - In accordance with 25.7 Details of the extension cords that can be used; - Attention! Danger! The blades continue to move after the motor has been switched off; - Keep the power cord and extension cord away from the blades; - Unplug the appliance from the power supply before adjusting, cleaning or repairing the mower, or before untangling the power cord or checking it for damage;
- Use of controls; wwW.bzxz.Net
- Assembly of the appliance (if it is not supplied in a ready-to-use state); - Danger to hands and feet from the blades;
Unplug the appliance from the power supply before putting it down; Do not allow children or persons who are not familiar with these instructions and warnings to use the appliance. The appliance should be used only in daylight or good artificial light. The motor should be switched on only when hands and feet are away from the shearing device. Wear sturdy shoes when using the appliance. The safety instructions for the operation of the grass shears include a recommendation that the appliance should be powered by a residual current operated protective device (RCD) with an operating current not exceeding 30 mA. The appliance should be regularly inspected and maintained and should only be repaired by a designated repairer. Details of maintenance and adjustments that can be performed by the user himself. Keep the ventilation openings free of debris. 8 Protection against contact with live parts This chapter of GB4706.1-1998 is applicable except for the following: 8.1 The following content is added to this clause: Class II grass shears should have a handle made of insulating material or made of metal covered with a layer of insulating material. The metal handle has an additional layer of insulation according to the test provisions of 16.3 (Table 5) and the requirements of 21.101. 2
GB4706.64—2003/IEC 60335-2-94:1999 The handle shall be constructed so that it is not possible for the operator's hand to touch the metal parts connected to the cutting mechanism of the grass shears within the proper scope of use of the grass shears. These requirements also apply to grass shear accessories used with multi-purpose tools. The insulating covering of the metal handle is also checked by the following additional test, by observation and the tests of 16.3 (Table 5) and 21.101.
The handle with the insulating covering is heated at a temperature of (70±2)℃ for 7d (168h) and the specimen is then cooled to near ambient temperature. The covering shall not shrink so that the required insulating function is lost. The covering shall not peel off so that it can move longitudinally. After this test procedure, the specimen is cooled at a temperature of 10±2)℃ for 4h.
The specimen is then subjected to the impact test according to Figure 101. A weight A with a mass of 300g is dropped from a height of 350mm onto hardened steel, with the tip of the steel placed on the specimen. The impact test can be carried out on all parts of the handle. The distance between each impact part should not be less than 10mm.
After the test, the covering layer should not show any signs of peeling. Whether the covering layer insulation is effective is tested by a dielectric strength test between the metal part of the handle with the covering insulation layer and the metal foil wrapped on the insulating covering layer. The applied test voltage is 2500V for 1min. During the test, no breakdown or flashover is allowed.
9 Starting of electric appliances
The contents of this chapter of GB4706.1~—1998 are not applicable. 10 Input power and current
This chapter of GB4706.1-1998 is applicable except for the following contents. 10.1 The contents of this article are not applicable.
11 Heat
This chapter of GB4706.1-1998 is applicable except for the following contents. 11.7 This clause is replaced by the following contents:
The scissor-type grass shears are operated under normal working conditions until they are stable. 12 Blank
13 Leakage current and electrical strength at working temperature The contents of this chapter of GB4706.1--1998 are applicable. 14 Blank
15 Moisture resistance
The contents of this chapter of GB4706.1-1998 are applicable. 16 Leakage current and electrical strength
The contents of this chapter of GB4706.1-1998 are applicable. 17 Overload protection of transformers and related circuits The contents of this chapter of GB4706.1-1998 are applicable. 3
GB 4706.64-2003/1EC 60335-2-94:199918 Durability
The contents of this chapter of GB4706.1--1998 are not applicable. 19 Abnormal operation
The contents of this chapter of GB4706.1--1998 are applicable. 20 Stability and mechanical hazards
The contents of this chapter of GB4706.1-1998 are applicable. 20.1 The following content is added to this clause:
It shall not be possible for an extended finger to touch the moving blade from any handle. The position of all handles shall be such that the test distance from the blade to the side of the handle farthest from the blade is not less than 120 mm. This distance shall be measured along the shortest path from the side of the handle farthest from the knife to the nearest cutting edge of the blade (see Figure 102). If there is a hand guard, the distance shall be measured from the farthest side of the handle to the hand guard and from there to the nearest cutting edge of the blade (see Figure 103). 21 Mechanical strength
This clause of GB4706.1-1998 is applicable except as follows. The third paragraph is replaced by the following:
The appliance is rigidly supported and three impacts are applied to each possible weak point on the casing. The impact energy is (1.0 ± 0.05) J. The handle, control lever, operating button, handle bar and cutting mechanism shall also be subjected to impacts. 21.101 The strength of the handle and hand guard of scissor-type grass shears shall be tested by the following drop test. Each of the three complete grass shear specimens shall be dropped three times. The hand guard (handle) shall be dropped over a vertical distance of 0.9 m onto a smooth, horizontal concrete surface in such a way that the hand guard is subjected to the most severe test (see Figure 104). After the test, the hand guard (handle) shall not separate nor show any visible cracks, the screws and fixing clamps shall remain tight, and the requirements of 20.1 and 20.2 shall still be met.
22 Structure
This chapter of GB4706, 1-1998 is applicable except for the following contents. 22.12 This clause adds the following contents:
Hand-held scissor-type grass shears shall be equipped with a handle with a gripping surface length of not less than 100 mm (Figures 102 and 103). Grass shears shall be shipped with a guard to prevent the risk of injury during transportation. 22.30 This clause adds the following contents:
The structure of scissor-type grass shears shall prevent the supplementary insulation and reinforced insulation from being short-circuited by grass clippings or other debris. 22.35 The following is added to this clause:
For Class II appliances, handles and levers to be gripped when operating the appliance shall be made of insulating material or covered with insulating material having a thickness of at least 1 mm or separated from accessible metal parts by insulation equivalent to supplementary insulation. The insulating material covering the handles, levers and handle bars shall also be checked by the following test, by observation and measurement. A sample of the covered part is placed at a temperature of (70 ± 2) °C for 7 days (168 hours) and then allowed to reach near room temperature. The observation results shall show that the covering shall not shrink to less than the specified length, or lose the required insulating function, or the covering shall not peel off to the point where it can move longitudinally.
Then the sample is kept at a temperature of (-10 ± 2) °C for 4 hours. While the sample is still at this temperature, it is impacted again using the apparatus shown in Figure 101. A weight A with a mass of 300 g is dropped from a height of 350 mm onto hardened steel B, with the tip of the steel placed on the sample. 4
GB4706.64—2003/IEC60335-2-94:1999 Apply an impact once to each point on the covering layer that may be weak or damaged in the specified use. The distance between each impact point is at least 10mm
After the test, the covering layer should not show any signs of peeling. Whether the insulation of the covering layer is effective is verified by a dielectric strength test between the metal part of the handle covering the insulating layer and the metal foil wrapped on the insulating covering layer. The test voltage applied is 2500V and lasts for 1min. During the test, no breakdown or flashover is allowed. 22.40 This clause adds the following content:
Before the blade can be driven, the switch configuration should have two independent and different actions. There should be no locking device to lock the operating lever in the "on" position. When the operating lever is released, the movement of the shearing mechanism should stop. 23 Internal wiring
The contents of this chapter of GB4706.1-1998 are applicable. 24 Components
This chapter of GB4706.1-1998 is applicable except for the following contents: 24.1 This article adds the following contents:
The switch should be fully disconnected, and the contact distance between each pole should be at least 3mm. The switch should be able to withstand 10,000 operation tests. 25 Power supply connection and external flexible cord
This chapter of GB4706.1-1998 is applicable except for the following contents: 25.1 The following content is added to this article:
Scissor-type grass shears should be equipped with a power cable or an appliance inlet socket. The appliance inlet socket should not allow the connection parts that comply with GB17465.1 to be inserted. 25.7 The first paragraph of this article is replaced with the following content: The power cord should be no lighter than:
————Rubber insulated, ordinary chlorine rubber sheathed soft wire GB5013.4 (code 60245IEC57); — Polyvinyl chloride insulated, ordinary polyvinyl chloride sheathed soft wire GB5023.5 (code 60227IEC53). 26 Terminals for external wires
The contents of this chapter of GB4706.1-1998 are applicable. 27 Grounding measures
The contents of this chapter of GB4706.1-1998 are applicable. 28 Screws and connections
The contents of this chapter of GB4706.1-1998 are not applicable. 29 Creepage distance, electrical clearance and insulation penetration distance The contents of this chapter of GB4706.1-1998 are applicable. 30 Heat resistance, flame resistance and tracking resistance
This chapter of GB4706.1-1998 is applicable except for the following contents: 5
GB 4706.64-2003/IEC60335-2-94:199930.2.3
This article is not applicable.
31 Rust prevention
This chapter of GB4706.1-1998 is applicable. 2 Radiation, toxicity and similar hazards
This chapter of GB4706.1-1998 is applicable. Fixed arm
Base with a mass of 10 kg
Figure 101
Weight A
Impact test equipment
Number B
Material: hardened steel
Unit: mm
Scissor-type cutting tool
Scissor-type cutting tool
Figure 102
Safety distance
Guard to prevent slipping
Safety guard for scissor-type cutting tools
Shear-type cutting tools
GB4706.64-2003/IEC60335-2-94:1999 Knife-type cutting tools
Figure 103 Handrail
Lifting rope!
Concrete
1) For the test, the device should be suspended by a rope so that the device reaches the predetermined position. Cut the rope and let the appliance fall in the vertical direction to test the hand guard or drive unit.
Figure 104 Hand guard and handle strength test
GB 4706.64—2003/1EC 60335-2-94:1999 Appendix
The appendixes to GB4706.1-1998 are applicable except for the following contents. Appendix A
(Normative Appendix)
Normative reference standards
This appendix to GB4706.1 is applicable except for the following provisions. Added:
2 Safety colours (negISO3864:1984)
GB 2893—1982
GB/T4269.1-2000 Tractors and machinery for agriculture and forestry, lawn and gardening power machinery - Symbols for operator controls and other display devices - Part 1: General symbols (idtISO3767-1:1991) GB/T4269.3—2000
Tractors and machinery for agriculture and forestry, lawn and gardening power machinery - Symbols for operator controls and other display devices - Part 3: Symbols for lawn and gardening power machinery (idtISO3767-3:1991) Appendix D
(Normative appendix)
Alternative requirements for protected motor units The contents of this appendix of GB 4706.1—1998 are not applicable. Appendix F
(Normative Appendix)
The contents of this appendix of GB4706.1-1998 are not applicable to motors that are not isolated from the mains power supply and whose basic insulation is not designed according to the rated voltage of the appliance. 8
Warning:
Read the instruction manual:
Do not get wet:
Appendix AA
(Informative Appendix)
GB 4706.64-2003/1IEC 60335-2-94:1999-Scissor-type grass shears
Note: If these graphics are used, their meaning should be explained in the instruction manual
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