A clamp head, clamp release clamp and clamp assembly

Abstract

The present invention relates to the field of mechanical engineering, and discloses a pliers head, a clamp release pliers and a clamp assembly. The pliers head includes a first abutment head and a second abutment head. The first abutment head has an inclined surface, a concave surface and a first plane. The first plane is connected to one end of the concave surface, and the inclined surface is connected to the other end of the concave surface. The concave surface is an arc surface. The concave surface and the first plane form a clamp groove adapted to the big foot. The second abutment head has a clearance groove and a clamping table located at the opening of the clearance groove. The clamping table has a small foot channel and a supporting surface located on one side of the small foot channel. Therefore, when the pliers body provided by the pliers head provided by the present invention is installed, the pre-opening type clamp is stably abutted with the pliers head because the contact area between the pre-opening type clamp and the pliers head is larger than the contact area between the pliers and the pre-opening type clamp in the prior art. Therefore, the pre-opening type clamp can be safely opened by using the pliers head provided by the present invention.

Description

Technical Field

[0001] The invention relates to the field of mechanical engineering, and in particular to a clamp head, a clamp releasing clamp and a clamp assembly. Background Art

[0002] Many places in the car are connected by pipes, such as water pipes, air inlet pipes, oil pipes, etc. Due to the temperature difference in the working conditions of the car, the above pipes expand and contract, and the tightness of the elastic clamp can change with the expansion and contraction of the pipes, so that the pipes are sealed and connected.

[0003] The elastic clamps in the prior art include pre-opening clamps and non-pre-opening clamps. The difference between the two types of clamps is:

[0004] The non-pre-opening type clamp is in a contracted state in the initial state. When in use, a tool is required to transform the non-pre-opening type clamp from the contracted state to the pre-opened state, and then put it on the pipe clamp for application.

[0005] The initial state of the pre-opening type clamp is the pre-opening state, so it can be directly put on the pipe clamp for application. Therefore, compared with the non-pre-opening type clamp, the pre-opening type clamp is more convenient to use.

[0006] However, during the manufacturing process of the pre-opening clamp, it is still necessary to manually use tools to change the pre-opening clamp from the released state to the pre-opened state. The existing method generally uses pliers to change the pre-opening clamp from the released state to the pre-opened state, which is as follows: one hand holds the pre-opening clamp, and the other hand holds the pliers, and the teeth on the pliers are used to clamp the free ends of the pre-opening clamp, and then the pliers are clamped so that one free end is clamped to the other free end.

[0007] However, only simple pre-opening type clamps can be operated by pliers. There are many types of pre-opening type clamps. Other pre-opening type clamps can only be operated with the help of special tools.

[0008] In addition, in the above operation, when the holding force applied to the pliers is unstable, it is easy for the clamp to fly out of the pliers, which may hurt yourself and the staff nearby; lack of experience can easily hurt yourself, and the production efficiency is low. Therefore, higher requirements are placed on the operator. Summary of the invention

[0009] The present invention is made to solve the above-mentioned problem, and aims to provide a clamp head, a clamp releasing pliers and a clamp assembly.

[0010] The present invention provides a pliers head, which is used to be installed on a pliers body, so as to change a pre-opened elastic clamp from a released state to a pre-opened state. The pre-opened elastic clamp comprises a clamping body, a big foot and a small foot arranged at two ends of the clamping body, the big foot has a locking tongue, and the end of the small foot has a supporting step and a supporting boss, including: a first supporting head, which has a clamping groove adapted to the big foot; and a second supporting head, which has a giving way groove for accommodating the locking tongue and a clamping platform located at the opening of the giving way groove and adapted to the small foot, wherein the first supporting head has a concave surface, a first plane and a first inclined surface, the first plane is connected to the concave surface and is located at one end of the concave surface, the second inclined surface is connected to the concave surface and is located at the other end of the concave surface, the concave surface and the first plane form a clamping groove, the clamping platform has a small foot channel and a supporting surface located on one side of the small foot channel, the supporting step of the small foot is against the supporting surface, and the supporting boss passes through the small foot channel and extends into the giving way groove.

[0011] The pliers head provided by the present invention may also have the following features: the second abutment head has a second plane and a third plane, the second plane is connected to the first plane and is perpendicular to the first plane, the third plane is connected to the inclined plane, and the third plane is parallel to the second plane and inclined to the inclined plane.

[0012] The pliers head provided by the present invention may also have the following features: the concave surface is an arc surface, the first plane is vertically tangent to the concave surface, and the inclined surface is tangent to the concave surface.

[0013] The pliers head provided by the present invention may also have the following feature: wherein the angle between the third plane and the inclined surface is 90°-180°.

[0014] The pliers head provided by the present invention may also have the following feature: wherein the third plane is located above the second plane.

[0015] A clamp releasing pliers comprises: a pliers body having a first hinged rod and a second hinged rod rotatably connected; and a pliers head having a first abutment joint and a second abutment joint, wherein the first abutment joint is detachably mounted on the head end of the first hinged rod, the second abutment joint is detachably mounted on the head end of the second hinged rod, and the first inclined surface faces the clamping groove.

[0016] The clamp release pliers provided by the present invention may also have the following features: wherein, it also includes: a locking mechanism for fixedly connecting the first hinged rod and the second hinged rod; wherein, the locking mechanism includes: a positioning pin, installed on the first hinged rod; a positioning plate, rotatably installed on the second hinged rod, having a plurality of positioning slots adapted to the positioning pin; and a return spring, the two ends of which are respectively against the second hinged rod and the positioning plate.

[0017] A clamp assembly, used for fixing pipe fittings, comprises: a pre-opened clamp and a clamp releasing pliers for opening the pre-opened clamp, wherein the pre-opened elastic clamp comprises a clamping portion and a limiting portion and a supporting portion respectively installed at two ends of the clamping portion, the supporting portion is located on one side of the limiting portion; the supporting portion comprises a small foot arc arranged at one end of the clamping portion and a small foot arranged at the end of the small foot arc and facing the limiting portion, the small foot has a supporting boss and a supporting surface located below the supporting boss, the limiting portion comprises a large foot arc arranged at the other end of the clamping portion and a large foot arranged at the end of the large foot arc, the large foot has a locking tongue, and the locking tongue has a limiting hole adapted to the supporting boss on the small foot.

[0018] The clamp release pliers provided by the present invention may also have the following features: the big foot also includes a first inclined plate obliquely arranged on the outside of the clamping part and a second inclined plate obliquely arranged on the first inclined plate, one end of the locking tongue is installed on the second inclined plate, and the other end has a lift block, which is used to guide the supporting boss of the small foot to the limiting hole.

[0019] The clamp releasing pliers provided by the present invention may also have the following feature: wherein the limiting hole is a round hole.

[0020] Functions and Effects of the Invention

[0021] The pliers head involved in the present invention includes a first abutment head and a second abutment head, wherein the first abutment head has an inclined surface, a concave surface and a first plane, wherein the first plane is connected to one end of the concave surface, the inclined surface is connected to the other end of the concave surface, the concave surface is an arc surface, and the concave surface and the first plane form a slot adapted to the big foot, and the second abutment head has a clearance groove and a clamping platform located at the opening of the clearance groove, wherein the clamping platform has a small foot channel and a supporting surface located on one side of the small foot channel, therefore, when the pliers body provided by the present invention is installed with the pliers head, when the pre-opening clamp is opened, the big foot on the pre-opening clamp is abutted against the slot, the supporting step of the small foot is abutted against the supporting surface, so that the supporting boss of the small foot extends into the clearance groove through the small foot channel, and finally the clamp body is clamped so that the locking tongue extends into the clearance groove and is clamped with the supporting boss. Since the contact area between the pre-opening clamp and the pliers head is larger than the contact area between the pliers and the pre-opening clamp in the prior art, the pre-opening clamp and the pliers head are stably abutted. Therefore, the pre-opening clamp can be opened safely by using the pliers provided by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the clamp assembly in this embodiment;

[0023] Figure 2 Schematic diagram of the pre-opening clamp in this embodiment;

[0024] Figure 3 is a schematic diagram of the little foot in this embodiment;

[0025] Figure 4 is a schematic diagram of the clamp release pliers in this embodiment;

[0026] Figure 5 is a three-dimensional diagram of the first abutment joint in this embodiment;

[0027] Figure 6 is a front view of the first abutment joint in this embodiment;

[0028] Figure 7 is a top view of the first abutment joint in this embodiment;

[0029] Figure 8 is a three-dimensional diagram of the second abutment head in this embodiment; and

[0030] Fig. 9 It is a front view of the second abutment in this embodiment. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is described in detail below in conjunction with embodiments and drawings.

[0032] Figure 1 Schematic diagram of the clamp assembly in this embodiment.

[0033] like Figure 1 As shown, the clamp assembly 100 in this embodiment includes a pre-opening clamp 1 and a clamp releasing pliers 2 .

[0034] Figure 2 Schematic diagram of the pre-opening clamp in this embodiment and Figure 3 It is a schematic diagram of the little foot in this embodiment.

[0035] like Figure 2 and Figure 3 As shown, the pre-opening clamp in this embodiment includes a clamping portion 11 and a supporting portion 12 and a limiting portion 13 respectively installed at two ends of the clamping portion 11.

[0036] The clamping portion 11 is a C-shaped plate.

[0037] The supporting portion 12 includes a small foot arc 121 and a small foot 122 .

[0038] The small foot arc 121 has a large end and a small end, and the width of the small foot arc 121 gradually decreases from the large end to the small end. The large end of the small foot arc 121 is installed at one end of the clamping part 11.

[0039] The small foot 122 is installed at the small end of the small foot arc 121 and is located on the outer side of the small foot arc 121.

[0040] A supporting boss 122a is provided at the end of the small foot, and a supporting step 122b is provided at the lower side of the supporting boss 122a.

[0041] The limiting portion 13 includes a large foot arc 131 , a large foot 132 , a locking tongue 133 , a limiting hole 134 and a lifting block 135 .

[0042] One end of the big foot arc 131 is provided with a big foot hollow 131a adapted to the small foot 122. The other end of the big foot arc 131 is mounted on the other end of the clamping part 11.

[0043] The big foot 132 has an inclined plate 132a and a second inclined plate 132b, wherein one end of the inclined plate 132a is mounted on one end of the big foot arc 131 having the big foot hollow 131a, and the inclined plate 132a is tilted with the clamping portion, and the tilted angle is an obtuse angle. One end of the second inclined plate 132b is mounted on the other end of the inclined plate 132a, and the second inclined plate 132b is tilted with the inclined plate 132a, and the tilted angle is an obtuse angle, and the second inclined plate 132b is away from the small foot 122.

[0044] One end of the locking tongue 133 is mounted on the second inclined plate 132 b , and the locking tongue 133 is arranged parallel to the second inclined plate 132 b .

[0045] The limiting hole 134 is disposed on the locking tongue 133. In the present embodiment, the limiting hole 134 is circular in shape and is used to clamp the supporting boss 122a of the small foot 122.

[0046] The tilting block 135 is obliquely installed at the other end of the locking tongue 133 , and the included angle between the tilting block 135 and the locking tongue 133 is an obtuse angle.

[0047] The clamp releasing pliers 2 include a pliers body 21 , a locking mechanism 22 and a pliers head 23 .

[0048] Figure 4 Schematic diagram of the clamp release pliers in this embodiment.

[0049] like Figure 4 As shown, the pliers body 21 includes a first hinge rod 211 and a second hinge rod 212 .

[0050] One end of the first hinge rod 211 is a mounting end, and the other end is an operating end. The mounting end has a first threaded hole. In addition, a hinge boss 211 a is provided near the mounting end.

[0051] One end of the second hinged rod 212 is a mounting end, and the other end is an operating end. The mounting end has a second threaded hole. In addition, a hinge hole matched with the hinge boss 211a is provided near the mounting end. The second hinged rod 212 is sleeved on the hinge boss 211a on the first hinged rod 211 through the hinge hole, so that the first hinged rod 211 and the second hinged rod 212 are rotatably connected.

[0052] The locking mechanism 22 includes a positioning pin 221 , a positioning plate 222 and a return spring 223 .

[0053] The positioning pin 221 is installed on the first hinge rod 211 and is close to the operating end.

[0054] The middle part of the positioning plate 222 has a hinge platform rotatably connected to the second hinge rod 212 , one end of the positioning plate 222 has two positioning slots matched with the positioning pin 221 , and the other end has a pressing handle.

[0055] The return spring 223 is sleeved on the hinged platform on the positioning plate 222 , and one end of the return spring 223 abuts against the second hinge rod 212 , and the other end abuts against the positioning plate 222 .

[0056] When the pressing handle is pressed to rotate the positioning plate 222, the positioning slot on the positioning plate 222 is separated from the positioning pin 221 and the return spring 223 is twisted. When the pressing handle is released, the positioning plate 222 is reset under the elastic force of the return spring 223, so that the positioning slot on the positioning plate 222 is stuck on the positioning pin 221, thereby fixing the first hinge rod 211 and the second hinge rod 212.

[0057] Figure 5 is a three-dimensional diagram of the abutment joint in this embodiment, Figure 6 is a front view of the abutment in this embodiment and Figure 7 2 is a top view of the abutment joint in this embodiment.

[0058] The clamp head 23 includes a first abutment head 231 and a second abutment head 232 .

[0059] like Figure 5 to Figure 7 As shown, the abutting head 231 is substantially in the shape of a cuboid, and the abutting head 231 has a mounting surface 231a, a second plane 231b, a third plane 231c, a first plane 231d, a concave surface 231e and an inclined surface 231f.

[0060] The bottom surface of the first abutting joint 231 is a mounting surface 231 a , and the first abutting joint 231 is mounted on the first hinge rod 211 via the mounting surface 231 a .

[0061] The inclined surface 231f, the concave surface 231e, the first plane 231d, the second plane 231b and the third plane 231c are all located at the opposite side of the mounting surface 231a.

[0062] The second plane 231b, the third plane 231c and the mounting surface 231a are arranged in parallel, and the distance between the second plane 231b and the mounting surface 231a is smaller than the distance between the third plane 231c and the mounting surface 231a.

[0063] The top end of the first plane 231d is connected to the second plane 231b, and the bottom end is close to the mounting surface 231a. In this embodiment, the first plane 231d is arranged parallel to the second plane 231b.

[0064] One end of the concave surface 231e is connected to the first plane 231d, so that the concave surface 231e and the first plane 231d form a slot a. In this embodiment, the concave surface 231e is an arc surface, and the concave surface 231e is tangent to the first plane 231d.

[0065] The bottom end of the inclined surface 231f is connected to the other end of the concave surface 231e, and the top end of the inclined surface 231f is connected to the third plane 231c. In this embodiment, the inclined surface 231f is tangent to the concave surface 231e and the angle between the inclined surface 231f and the third plane 231c is 135 degrees.

[0066] In this embodiment, the abutment joint has a through hole passing through the third plane 231c and the mounting surface 231a. The abutment joint is installed at the mounting ends of the first hinge rod 211 and the second hinge rod 212 by bolt fixing, so that the slots a on a pair of abutment joints are arranged relatively.

[0067] Figure 8 is a three-dimensional diagram of the second abutment in this embodiment and Fig. 9 It is a front view of the second abutment in this embodiment.

[0068] like Figure 8 and Fig. 9 As shown, the second abutting head 232 is substantially in the shape of a rectangular parallelepiped.

[0069] The second abutting head 232 has a clearance groove 2321 , a clamping platform 2322 and a clamping thread hole 2323 .

[0070] The clearance groove 2321 passes through the front side and the rear side of the second abutting head 232 and is close to the right end of the second abutting head 232 .

[0071] In this embodiment, the clearance groove 2321 is rectangular, with an opening at the right end, and is formed by a first inner wall surface 2321a, a second inner wall surface 2321b, and a third inner wall surface 2321c.

[0072] The first inner wall surface 2321 a is arranged parallel to the left side surface of the abutting head, and the first inner wall surface 2321 a is arranged perpendicular to the left side surface of the second abutting head 230 .

[0073] The second inner wall surface 2321 b is arranged in parallel with the upper side surface of the second abutting head 232 , and connects the first inner wall surface 2321 a and the right side surface of the second abutting head 232 .

[0074] The third inner wall surface 2321 c and the second inner wall surface 2321 b are arranged in parallel, and connect the first inner wall surface 2321 a and the right side surface of the second abutting head 232 .

[0075] The clamping platform 2322 is disposed at the opening of the clearance groove 2321 , with an upper end connected to the second inner wall surface 2321 b and a lower end connected to the third inner wall surface 2321 c .

[0076] In this embodiment, the card platform 2322 has a rectangular shape, and the front side surface 2322 a of the card platform 2322 is a supporting surface and is connected to the right side surface of the card platform 2322 .

[0077] A small foot passage 2322b is provided at the upper end of the front side surface 2322a, and the small foot passage 2322b is communicated with the yield groove 2321.

[0078] The threaded hole 2323 passes through the front side and rear end of the second abutment 232 and is close to the left end of the second abutment 232. The second abutment 232 is installed on the second hinge rod 212 of the caliper body by bolts, so that the small foot channel on the second abutment 232 faces the slot a on the first abutment 231.

[0079] When using the clamp releasing pliers 2 provided in this embodiment to change the pre-opened clamp from an open state to a pre-opened state, the big foot of the pre-opened clamp is grounded in the groove on the first abutment joint, the abutting step 122b of the small foot 12 abuts against the front side of the clamping platform 2322, and the abutting boss 122a of the small foot 12 extends into the clearance groove 2321 through the small foot channel, and then the clamp body 21 is clamped. At this time, the pre-opened clamp 1 is deformed by the force, so that the locking tongue 133 extends into the clearance groove 2321 and engages with the small foot.

[0080] Functions and Effects of the Embodiments

[0081] The pliers head involved in the present invention includes a first abutment head and a second abutment head, wherein the first abutment head has an inclined surface, a concave surface and a first plane, wherein the first plane is connected to one end of the concave surface, the inclined surface is connected to the other end of the concave surface, the concave surface is an arc surface, and the concave surface and the first plane form a slot adapted to the big foot, and the second abutment head has a clearance groove and a clamping platform located at the opening of the clearance groove, wherein the clamping platform has a small foot channel and a supporting surface located on one side of the small foot channel, therefore, when the pliers body provided by the present invention is installed with the pliers head, when the pre-opening clamp is opened, the big foot on the pre-opening clamp is abutted against the slot, the supporting step of the small foot is abutted against the supporting surface, so that the supporting boss of the small foot extends into the clearance groove through the small foot channel, and finally the clamp body is clamped so that the locking tongue extends into the clearance groove and is clamped with the supporting boss. Since the contact area between the pre-opening clamp and the pliers head is larger than the contact area between the pliers and the pre-opening clamp in the prior art, the pre-opening clamp and the pliers head are stably abutted. Therefore, the pre-opening clamp can be opened safely by using the pliers provided by the present invention.

[0082] Furthermore, since the clamp head has an inclined surface, the large foot and the small foot of the pre-opening clamp can slide into the clamping groove through the inclined surface, so that the pipe connector can clamp the pre-opening clamp.

[0083] Furthermore, since the third plane is higher than the second plane, when the pre-opening clamp is transformed from a released state to a pre-opened state, a pair of third planes abut against each other to achieve the purpose of limiting, thereby further improving the safety of the operation.

[0084] Furthermore, since the concave surface is tangent to the inclined surface and the first plane, it is convenient for the pliers head to be separated from the pre-opened clamp in the pre-opened state.

[0085] Furthermore, since the big foot of the pre-opening clamp is provided with a nose eye, the bridge of the nose clamped in the nose eye can provide stable support for the big foot.

[0086] Furthermore, since the nose bridge is obliquely arranged on the outer side of the arc of the small foot, the pipe connection personnel can gradually apply pressure to transform the pre-opening clamp from a released state to a pre-opening state, thereby improving the safety of the operation.

[0087] Furthermore, since both the big foot and the small foot of the pre-opening clamp are provided with tilting, the pre-opening clamp can be better clamped in the clamping groove.

[0088] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

[0089] In the above-mentioned embodiment, the clamp releasing pliers has a locking mechanism, but the locking mechanism does not affect the clamp releasing pliers in opening the pre-opening clamp, and therefore, the locking mechanism may be omitted in other embodiments.

[0090] In addition, in this embodiment, the foot passage on the card platform is connected to the left end face and the front side of the card platform, but does not pass through the rear side of the card platform. However, in other embodiments, the foot passage can also pass through the rear side of the card platform.

Claims

1. A pliers head, used to be installed on a pliers body, so as to change a pre-opened elastic clamp from a released state to a pre-opened state, the pre-opened elastic clamp having a clamping body, a large foot and a small foot arranged at both ends of the clamping body, the large foot having a locking tongue, an inclined plate, and a second inclined plate, one end of the locking tongue being installed on the second inclined plate, and the locking tongue being arranged parallel to the second inclined plate, the end of the small foot having a supporting boss and a supporting step located on the lower side thereof, characterized in that: include: The first abutment head is in the shape of a rectangular parallelepiped and has a slot adapted to the big foot; as well as The second abutment head is in the shape of a rectangular parallelepiped and has a clearance groove for accommodating the locking tongue and a clamping platform located at the opening of the clearance groove and adapted to the small foot. The first abutment head has a first inclined surface, a concave surface, a first plane and a second plane connected in sequence. The first plane is located at one end of the concave surface, and the first plane is perpendicular to the second plane. The first inclined surface is located at the other end of the concave surface, The concave surface and the first plane form the slot, and the concave surface is an arc surface, which is tangent to the first plane and the first inclined surface respectively. The card platform has a small foot passage connected to the clearance groove and a supporting surface located on one side of the small foot passage, and the front side of the card platform is the supporting surface. When using the pliers head to change the clamp from an open state to a pre-open state, first make the big foot abut against the clamping groove, and the abutting step of the small foot abut against the abutting surface, let the abutting boss pass through the small foot channel and extend into the clearance groove, then clamp the pliers head, and the clamp will be deformed by the force, so that the locking tongue extends into the clearance groove and engages with the small foot.

2. The pliers head according to claim 1, characterized in that: in, The first abutment head also has a third plane, The third plane is connected to the inclined plane. The third plane is parallel to the second plane and inclined to the inclined plane.

3. The pliers head according to claim 2, characterized in that: in, The included angle between the third plane and the inclined plane is 90°-180°.

4. The pliers head according to claim 2, characterized in that: in, The third plane is located above the second plane.

5. A clamp release pliers, characterized in that: include: A pliers body having a first hinged rod and a second hinged rod rotatably connected; as well as A pliers head having a first abutment head and a second abutment head, The first abutment head is detachably mounted on the head end of the first hinged rod. The second abutment head is detachably mounted on the head end of the second hinge rod, and the first inclined surface faces the card slot. Wherein, the pliers head is the pliers head described in any one of claims 1 to claim 4.

6. The clamp release pliers according to claim 5, characterized in that: Also includes: A locking mechanism, used for fixedly connecting the first hinged rod and the second hinged rod; Wherein, the locking mechanism comprises: A positioning pin, mounted on the first hinge rod; A positioning plate, rotatably mounted on the second hinge rod, having a plurality of positioning slots adapted to the positioning pins; The return spring has two ends respectively abutting against the second hinge rod and the positioning plate.

7. A clamp assembly for fixing a pipe, characterized in that: include: A pre-opening clamp and a clamp releasing pliers for opening the pre-opening clamp, The clamp release pliers are the clamp release pliers according to claim 5 or claim 6, Wherein, the pre-opening elastic clamp comprises a clamping portion and a limiting portion and a resisting portion respectively installed at two ends of the clamping portion, and the resisting portion is located on one side of the limiting portion; The abutting portion comprises a small foot arc arranged at one end of the clamping portion and a small foot arranged at the end of the small foot arc and facing the limiting portion, and the small foot comprises an abutting boss and an abutting step located below the abutting boss. The limiting portion comprises a large foot arc arranged at the other end of the clamping portion and a large foot arranged at the end of the large foot arc, the large foot comprises a locking tongue, and the locking tongue comprises a limiting hole matched with the abutting boss on the small foot.

8. The clamp assembly according to claim 7, characterized in that: in, The big foot further includes a first inclined plate obliquely arranged outside the clamping portion and a second inclined plate obliquely arranged on the first inclined plate. One end of the locking tongue is mounted on the second inclined plate, and the other end is provided with a lift block, which is used to guide the supporting boss of the small foot to the limiting hole.

9. The clamp assembly according to claim 8, characterized in that: in, The limiting hole is a round hole.

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