Anti-falling structure of handle sleeve of locking pliers

Abstract

The utility model provides an anti-drop structure for a handle sleeve of a lock wrench, which is arranged between a wrench handle of the lock wrench and the handle sleeve sleeved on the wrench handle, the wrench handle comprises a movable handle and a fixed handle, and comprises a connecting part arranged on the wrench handle and a connecting matching part arranged on the handle sleeve, and the connecting part and the connecting matching part correspond to each other in position and are connected in a matched manner. The connecting part is connected with the connecting matching part, so that the handle sleeve and the forceps handle are positioned, and the handle sleeve is effectively prevented from falling off from the forceps handle.

Description

Technical Field

[0001] The utility model relates to a structure of a manual tool, in particular to an anti-drop structure of a handle cover of a locking pliers. Background Art

[0002] Locking pliers are a common hand tool. The pliers head can be locked and generate a large clamping force, so that the clamped parts are not easy to loosen. When using this tool, there is no need to hold it tightly to maintain the clamping force of the pliers head. It can be used to clamp parts for riveting, welding, grinding and other processing. For the purpose of anti-slip, anti-corrosion, and improving the feel, some locking pliers products can be installed with a handle cover on the pliers handle. Ordinary locking pliers, and even other pliers products, are usually connected to the pliers handle by glue during production. After long-term use, gaps are easily generated, resulting in a loose connection between the handle cover and the pliers handle, and the handle cover is prone to loosening, displacement, and falling off. The utility model patent with publication number CN219833299U discloses a pair of needle-nosed pliers for wiring, and the pliers body is also provided with a handle cover, but the utility model does not propose a solution on how to improve the anti-falling effect of the handle cover. Utility Model Content

[0003] The existing handle cover is usually connected to the pliers handle by glue. After long-term use, the connection between the handle cover and the pliers handle is not firm and is easy to fall off. To overcome this defect, the utility model provides an anti-falling structure of the handle cover of the pliers, which makes the connection between the handle cover and the pliers handle more firm and improves the anti-falling effect.

[0004] The technical solution of the utility model is: the anti-drop structure of the handle cover of the pliers is arranged between the pliers handle of the pliers and the handle cover sleeved on the pliers handle, the pliers handle includes a movable handle and a fixed handle, including a connecting part arranged on the pliers handle and a connecting matching part arranged on the handle cover, the connecting part and the connecting matching part are corresponding in position and adaptively connected. The connecting part and the connecting matching part are connected so that the handle cover is positioned with the pliers handle, effectively preventing the handle cover from falling off the pliers handle.

[0005] Preferably, the connecting portion is a reverse tooth, and the connecting matching portion is a reverse tooth groove that can mesh with the reverse tooth. The reverse teeth on the pliers handle mesh with the reverse tooth groove on the handle sleeve, so that the handle sleeve is positioned on the pliers handle to produce an anti-slip effect.

[0006] As an alternative, the connecting portion is a reverse toothed inlay, and the connecting matching portion is a reverse tooth that can mesh with the reverse toothed inlay. The reverse tooth and the reverse toothed inlay can also be interchanged in position and still mesh to produce an anti-slip effect.

[0007] Preferably, the pliers further include a plurality of raised portions arranged on the outside of the pliers handle, and recessed portions suitable for fingers to fit into are formed between the raised portions. The gaps between the raised portions are suitable for fingers to grip, and this anti-slip structure further prevents the handle cover from falling off and improves the hand feel when the pliers are used, making the pliers more suitable for gripping and less likely to slip out of the hand.

[0008] Preferably, the movable handle has four or five protrusions, and the fixed handle has two protrusions. According to general operating habits, the thumb of the hand is buckled on the fixed handle, and the other four fingers are buckled on the movable handle. Therefore, the movable handle has four or five protrusions corresponding to the four fingers and providing a limiting structure, and the fixed handle has two protrusions to provide a limiting structure for the thumb.

[0009] Preferably, the handle sleeve is provided with a handle sleeve raised portion, and the handle sleeve raised portion corresponds to the raised portion in position.

[0010] Preferably, a spacer slot is provided on the inner side of the handle sleeve on the fixed handle, and a screw hole is provided at the end of the handle sleeve on the fixed handle. A spacer is connected between the two pliers handles of the locking pliers, and an adjusting screw is provided at the rear end of the fixed handle. Therefore, the handle sleeve on the fixed handle also needs to be designed to be adaptive to the specific structure of the locking pliers.

[0011] Preferably, the handle cover is a rubber piece. The handle cover made of rubber has good elasticity and can separate the connecting portion and the connecting matching portion through its own deformation, so that the handle cover can be taken off from the pliers handle, making the handle cover a replaceable part.

[0012] As an alternative, the handle cover is an injection molded part. The handle cover can also be directly combined with the pliers handle by injection molding, and the handle cover has high firmness and saves assembly steps.

[0013] Preferably, the handle cover is a double-layer structure, including a hard inner cover and a soft outer cover, wherein the hard inner cover is an injection molded part and is fixed on the pliers handle, and the soft outer cover covers the hard inner cover. The handle cover of this structure can not only be firmly combined with the pliers handle, but also improve the hand feel, and has good resistance to organic solvents and strong anti-aging ability.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can obviously improve the anti-dropping effect of the handle sleeve on the pliers handle. The utility model can make the connection between the handle sleeve and the pliers handle more firm and not easy to drop off through the cooperation of the inverted teeth and the inverted tooth inlay. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of a disassembled structure of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a fixed handle sleeve in the utility model;

[0019] Figure 4 Another structural schematic diagram of the utility model;

[0020] Figure 5 Another structural schematic diagram of the fixed handle sleeve in the utility model.

[0021] In the figure, 1-pliers handle, 101-movable handle, 102-fixed handle, 1021-adjusting screw, 103-inverted teeth, 104-protrusion, 105-recessed portion, 106-support, 2-handle sleeve, 201-inverted tooth inlay, 202-fixed handle sleeve, 203-movable handle sleeve, 204-screw through hole, 205-support slot, 206-soft outer sleeve, 207-hard inner sleeve, 3-pliers head. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the specific embodiments of the drawings.

[0023] Embodiment 1:

[0024] like Figures 1 to 3As shown, the anti-slip structure of the handle cover of the locking pliers is arranged between the clamp handle 1 of the locking pliers and the handle cover 2 sleeved on the clamp handle 1. The clamp handle 1 includes a movable handle 101 and a fixed handle 102. The front ends of the movable handle 101 and the fixed handle 102 are both hinged to the clamp head 3 of the locking pliers. A support 106 is connected between the movable handle 101 and the fixed handle 102. The clamp handle 1 is made of a steel plate through shearing, stamping, bending and other processes. A cavity is provided inside the fixed handle 102, and an adjusting screw 1021 is connected to the rear end of the fixed handle 102 through a thread. The adjusting screw 1021 extends into the cavity of the fixed handle 102. A side groove is provided on the inner side of the fixed handle 102. One end of the support 106 is hinged on the movable handle 101, and the other end passes through the side groove into the cavity of the fixed handle 102 and is hooked on the end of the adjusting screw 1021. The handle cover 2 includes a movable handle cover 203 and a fixed handle cover 202. The movable handle cover 203 corresponds to the movable handle 101, and the fixed handle cover 202 corresponds to the fixed handle 102. The anti-detachment structure of the handle cover of the pliers includes a connecting portion provided on the pliers handle 1 and a connecting matching portion provided on the handle cover 2. The connecting portion and the connecting matching portion are in corresponding positions and are adaptively connected. The connecting portion is a reverse tooth 103, and the connecting matching portion is a reverse tooth inlay 201 that can form an engagement with the reverse tooth 103. The reverse tooth 103 is integrally formed with the pliers handle 1. The reverse tooth 103 is in a right-angled trapezoid, and has a guide slope and a fastening surface. The fastening surface is perpendicular to the surface of the pliers handle 1. The reverse tooth inlay 201 is rectangular, and the width of the reverse tooth inlay is adapted to the thickness of the reverse tooth 103. The normal of the guide slope faces the rear end of the pliers handle 1. A support groove 205 is provided on the inner side of the handle cover 2 on the fixed handle 102, and a screw through hole 204 is provided at the rear end of the handle cover 2 on the fixed handle 102. The handle cover 2 is made of rubber.

[0025] The rubber handle cover 2 has good elasticity and can be taken off from the pliers handle 1 with force. When the handle cover 2 is damaged or loosened after long-term use, first loosen the adjusting screw 1021 and remove it from the pliers handle 1, remove the end of the support 106 hooked with the adjusting screw 1021 from the cavity of the fixed handle 102, and then pry at the inverted tooth groove 201 with a screwdriver or other tool, so that the inverted tooth groove 201 and the inverted teeth 103 are disengaged with the help of the deformation of the handle cover 2, and then pull the handle cover 2 with force to make the handle cover 2 detach from the pliers handle 1; when installing a new handle cover 2, put the front end of the handle cover 2 on the rear end of the pliers handle 1, and then push it forward with force until the handle cover 2 is completely put on the pliers handle 1, and twist different parts of the handle cover 2 appropriately when necessary, so that the inverted teeth 103 and the inverted tooth groove 201 are meshed, and the support groove 205 overlaps with the side groove position on the fixed handle 102. When the handle cover 2 is pushed from the rear end to the front end of the pliers handle 1, the handle cover 2 at the front edge of the inverted tooth slot 201 is stretched and deformed by the guide slope of the inverted tooth 103, and continues to climb along the guide slope. When the front edge of the inverted tooth slot 201 passes over the top of the guide slope, that is, the tooth tip of the inverted tooth 103, the front edge of the inverted tooth slot 201 drops and is held by the fastening surface, and at this time, the inverted tooth 103 also enters the inverted tooth slot 201 as a whole. Finally, the end of the support 106 is inserted back into the cavity of the fixed handle 102, and the adjusting screw 1021 is screwed back to the rear end of the pliers handle 1 and hooked with the end of the support 106 again.

[0026] Embodiment 2:

[0027] like Figure 4 As shown, the anti-drop structure of the handle cover of the pliers also includes a plurality of protrusions 104 arranged on the outside of the pliers handle 1, the protrusions 104 are 0.5mm higher than the surface of the pliers handle 1, and a recessed portion 105 suitable for finger insertion is formed between the protrusions 104. The width of the recessed portion 105 is approximately equivalent to the thickness of a normal person's finger, which is suitable for finger grasping, and the gap between the two protrusions is suitable for thumb grasping. There are four protrusions 104 on the movable handle 101, and two protrusions 104 on the fixed handle 102. The handle cover 2 is made of rubber, and the thickness of the rubber is 0.5mm. The rest is the same as in Example 1.

[0028] The handle cover 2 is separately injection molded and then installed on the pliers handle 1. After installation, the elasticity of the handle cover 2 allows it to wrap tightly around the pliers handle 1, and the drop formed by the raised portion 104 and the recessed portion 105 is also reflected on the handle cover 2. The elastic handle cover 2 fits both the raised portion 104 and the recessed portion 105, so a corresponding undulating drop is also formed on the handle cover 2. When in use, the user's thumb is buckled on the fixed handle cover 202 and falls on the depressed part caused by the two raised portions 104 on the fixed handle 102, and the remaining four fingers are buckled on the movable handle cover 203, and three of the fingers fall on the three depressed parts caused by the four raised portions 104 on the movable handle 101, so that when the pliers are squeezed, most of the fingers are restricted by the drop parts and are not easy to slip, so that the pliers can be held more stably and the force can be applied more stably, which is convenient for operation.

[0029] Embodiment 3:

[0030] The connecting portion is a reverse tooth groove provided on the pliers handle 1, and the reverse tooth groove is rectangular. The connecting matching portion is a reverse tooth provided on the handle cover and can form a mesh with the reverse tooth groove. The reverse tooth and the handle cover are integrally formed, and the reverse tooth is a right-angled trapezoid, with a guide slope and a fastening surface. The normal of the guide slope is open toward the front end of the handle cover, and the fastening surface is perpendicular to the inner surface of the handle cover, and the fastening surface faces the rear end of the handle cover. The number of raised parts on the movable handle is five. The rest is the same as in Example 1.

[0031] When the handle cover 2 is damaged or loosened after long-term use, first loosen the adjusting screw 1021 and remove it from the pliers handle 1, move the end of the support 16 hooked with the adjusting screw 1021 out of the cavity of the fixed handle 102, and then pry it at the inverted tooth with a screwdriver or other tool, and use the deformation of the handle cover 2 to move the inverted tooth out of the inverted tooth groove, so that the inverted tooth and the inverted tooth groove are disengaged, and then pull the handle cover 2 with force to make the handle cover 2 slip off the pliers handle 1; when installing a new handle cover 2, put the front end of the handle cover 2 on the rear end of the pliers handle 1, and then push it forward with force until the handle cover 2 is completely put on the pliers handle 1. If necessary, twist different parts of the handle cover 2 appropriately so that the inverted tooth and the inverted tooth groove are meshed, and the position of the support groove overlaps with the side groove on the fixed handle. When the handle cover 2 is pushed from the rear end to the front end of the clamp handle 1, the tooth tip of the inverted tooth slides on the surface of the clamp handle. When the tooth tip of the inverted tooth passes over the rear edge of the inverted tooth groove, the inverted tooth descends, and the fastening surface of the inverted tooth is pressed against and fastened with the rear edge of the inverted tooth groove, and at this time, the inverted tooth also enters the inverted tooth groove as a whole. Finally, the end of the support 16 is inserted back into the cavity of the fixed handle 102, and the adjusting screw 1021 is screwed back to the rear end of the clamp handle 1 and hooked with the end of the support 16 again. After the handle cover 2 is installed on the clamp handle 1, the elasticity of the handle cover 2 makes it wrap the clamp handle 1 tightly, and the drop formed by the protrusion 104 and the recessed portion 105 is also reflected on the handle cover 2. The elastic handle cover 2 is in contact with both the protrusion 104 and the recessed portion 105, so a corresponding undulating drop is formed on the handle cover 2. When in use, the user's thumb is buckled on the fixed handle sleeve 202 and falls on the depressed part formed by the two protrusions 104 on the fixed handle 102, and the other four fingers are buckled on the movable handle sleeve 203 and fall on the four depressed parts formed by the five protrusions 104 on the movable handle 101 respectively. In this way, when squeezing the locking pliers with force, most of the fingers are restricted by the drop parts and are not easy to slip, so that the locking pliers can be held more stably and the force can be applied more stably, which is convenient for operation.

[0032] Embodiment 4:

[0033] The handle cover 2 is an injection molded part made of hard plastic. The handle cover 2 is provided with a handle cover protrusion, and the handle cover protrusion corresponds to the protrusion 104. The rest is the same as in the first embodiment.

[0034] The handle cover 2 is directly injection molded on the pliers handle 1. During the injection molding, the adjusting screw 1021 and the support 106 are not installed first. After molding, the plastic directly forms the inverted tooth inlay 201 around the inverted tooth 103, and the inverted tooth 103 and the inverted tooth inlay 201 are meshed. After the handle cover 2 is molded, the support 106 and the adjusting screw 1021 are installed in sequence. When in use, the user's thumb is buckled on the fixed handle cover 202 and falls on the depressed part caused by the two protrusions 104 on the fixed handle 102, and the remaining four fingers are buckled on the movable handle cover 203, and three of the fingers fall on the three depressed parts caused by the four protrusions 104 on the movable handle 101, so that when the pliers are squeezed, most of the fingers are restricted by the drop part and are not easy to slip, so that the pliers can be held more stably and the force can be applied more stably, which is convenient for operation.

[0035] Embodiment 5:

[0036] like Figure 5 As shown, the handle cover 2 is a double-layer structure, including a hard inner cover 207 and a soft outer cover 206. The hard inner cover 207 is an injection molded part made of hard plastic and fixed on the pliers handle 1. The soft outer cover 206 is made of silicone and covers the hard inner cover 207. The rest is the same as in Example 1.

[0037] The production process of the handle cover 2 is as follows: first, a hard inner cover 207 is injection molded on the pliers handle 1. After molding, the plastic directly forms a reverse tooth inlay 201 around the reverse tooth 103, and the reverse tooth 103 and the reverse tooth inlay 201 are meshed; then, a soft outer cover 206 is formed outside the hard inner cover 207 by overmolding. Finally, the support 106 and the adjusting screw 1021 are installed on the pliers handle 1.

Claims

1. A locking pliers handle cover anti-drop structure, arranged between a locking pliers handle (1) and a handle cover (2) sleeved on the locking pliers handle (1), wherein the locking pliers handle (1) comprises a movable handle (101) and a fixed handle (102), wherein: The invention comprises a connecting portion provided on the pliers handle (1) and a connecting matching portion provided on the handle sleeve (2), wherein the connecting portion and the connecting matching portion are in corresponding positions and are adaptively connected, wherein the connecting portion is a reverse tooth (103), and the connecting matching portion is a reverse tooth groove (201) that can mesh with the reverse tooth (103); or the connecting portion is a reverse tooth groove, and the connecting matching portion is a reverse tooth that can mesh with the reverse tooth groove.

2. The locking pliers handle cover anti-drop structure according to claim 1, characterized in that: It also comprises a plurality of raised portions (104) arranged on the outside of the pliers handle (1), and recessed portions (105) suitable for inserting fingers are formed between the raised portions (104).

3. The locking pliers handle cover anti-drop structure according to claim 2, characterized in that: The number of the protrusions (104) on the movable handle (101) is four or five, and the number of the protrusions (104) on the fixed handle (102) is two.

4. The locking pliers handle cover anti-drop structure according to claim 2, characterized in that: A handle sleeve raised portion is provided on the handle sleeve (2), and the handle sleeve raised portion corresponds to the raised portion (104) in position.

5. The locking pliers handle cover anti-drop structure according to claim 1, characterized in that: A support groove (205) is provided on the inner side of the handle sleeve (2) on the fixed handle (102), and a screw through hole (204) is provided on the end of the handle sleeve (2) on the fixed handle (102).

6. The locking pliers handle cover anti-drop structure according to claim 1, characterized in that: The handle cover (2) is a rubber part.

7. The locking pliers handle cover anti-drop structure according to claim 1, characterized in that: The handle cover (2) is an injection molded part.

8. The locking pliers handle cover anti-drop structure according to any one of claims 1 to 7, characterized in that: The handle cover (2) is a double-layer structure, comprising a hard inner cover (207) and a soft outer cover (206); the hard inner cover (207) is an injection molded part and is fixed on the pliers handle (1); and the soft outer cover (206) is coated on the hard inner cover (207).

Images