A clamp head, clamp release clamp and clamp assembly

Abstract

This invention relates to the field of mechanical engineering and discloses a pliers head, a clamp release pliers, and a clamp assembly. Because the first abutment of the pliers head has a first groove adapted to the larger leg of a non-pre-opening clamp, and the second abutment of the pliers head has a second groove adapted to the smaller leg of the non-pre-opening clamp, and a limiting platform is provided on one side of the first groove, when using the pliers body with this pliers head to open a non-pre-opening clamp, the larger leg of the non-pre-opening clamp abuts against the first groove, and the smaller leg abuts against the second groove. Since the contact area between the non-pre-opening clamp and the pliers head is larger than the contact area between pliers and non-pre-opening clamps in the prior art, the non-pre-opening clamp and the pliers head are stably abutted. Therefore, using the pliers head, clamp release pliers, and clamp assembly provided by this invention, non-pre-opening clamps can be opened safely.

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 generally include pre-opening type and non-pre-opening type.

[0004] Among them, both ends of the non-pre-opening clamp are plate-shaped clamping tables. When using this type of elastic clamp for fixing, one hand uses the tooth section on the pliers to clamp on the clamping table of the non-pre-opening clamp to open the non-pre-opening clamp. Then one hand holds the pipe fitting tightly to prevent the pipe fitting from being separated from the installation position and the other hand needs to hold the pliers tightly so that the opened elastic clamp is placed on the pipe fitting, and finally the pliers are released so that the elastic clamp automatically shrinks under the action of its elastic force to fix the pipe fitting. In the process of opening the elastic clamp to fix, the holding force applied to the pliers is not stable enough, which can easily cause the elastic clamp to fly out, which may injure the staff and is unsafe; insufficient experience can easily injure oneself, and the installation efficiency is low. Therefore, high requirements are placed on pipe connection personnel. Summary of the invention

[0005] 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.

[0006] The present invention provides a pliers head, which is used to be installed on a pliers body to open a non-pre-opening elastic clamp, and the non-pre-opening elastic clamp has a clamping body and a large foot and a small foot arranged on the clamping body, including: a first abutment head, having a first clamping groove adapted to the large foot and a limit platform located on one side of the first clamping groove; and a second abutment head, having a second clamping groove adapted to the small foot, wherein the first abutment head has a first inclined surface and a second inclined surface connected to each other, the first inclined surface and the second inclined surface form the first clamping groove, and the cross-section of the first clamping groove is V-shaped, and the second abutment head has a concave surface, a third inclined surface and a first plane, the concave surface is connected to the third inclined surface, and the concave surface and the third inclined surface form the second clamping groove, and the cross-section of the second clamping groove is V-shaped, and the first plane is located on one side of the second clamping groove and is connected to the third inclined surface.

[0007] The pliers head provided by the present invention may also have the following feature: wherein the second abutment head further includes a second plane located at the other side of the second slot and connected to the concave surface, and the second plane is located above the first plane.

[0008] The pliers head provided by the present invention may also have the following feature: wherein the limiting platform has a fourth inclined surface connected to the first inclined surface, and the fourth inclined surface is coplanar with the first inclined surface.

[0009] The pliers head provided by the present invention may also have the following feature: wherein, the first abutment head also includes an abutment platform arranged opposite to the limit platform and located on the other side of the first card slot, the abutment platform having a fifth inclined surface connected to the second inclined surface, and the fifth inclined surface is coplanar with the second inclined surface.

[0010] The pliers head provided by the present invention may also have the following feature: wherein the length of the limiting platform is smaller than the length of the first clamping slot.

[0011] The pliers head provided by the present invention may also have the following feature: wherein the included angle of the first clamping groove is 60°-120°, and the included angle of the second clamping groove is 60°-120°.

[0012] A clamp releasing pliers comprises: a pliers body having a first hinged rod and a second hinged rod rotatably connected; 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, and the second abutment joint is detachably mounted on the head end of the second hinged rod for matching with the first abutment joint.

[0013] The clamp release pliers provided by the present invention may also have such features, and also include: 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; a return spring, the two ends of which are respectively against the second hinged rod and the positioning plate.

[0014] In the clamp release pliers provided by the present invention, it can also have such a feature that the first abutment joint can be detachably connected to the first hinged rod by any one of a threaded connection, a snap connection or a pin connection, and the second abutment joint can be detachably connected to the second hinged rod by any one of a threaded connection, a snap connection or a pin connection, so that the first slot on the first abutment joint and the second slot on the second abutment joint are arranged opposite to each other.

[0015] A clamp assembly, used for fixing a pipe fitting, comprises: a non-pre-opening clamp and a clamp releasing pliers for opening the non-pre-opening clamp, wherein the non-pre-opening clamp comprises the clamping body, the big foot, the small foot and a limit plate, wherein the big foot and the small foot are respectively mounted at two ends of the clamping body, and one end of the limit plate is mounted on the big foot, and the other end faces the small foot.

[0016] Functions and Effects of the Invention

[0017] According to the pliers head involved in the present invention, the first abutment head of the pliers head has a first groove that matches the big foot on the non-pre-opening type clamp, and the second abutment head of the pliers head has a second groove that matches the small foot on the non-pre-opening type clamp. In addition, a limit platform is provided on one side of the first groove. Therefore, when the pliers body equipped with the pliers head of the present invention opens the non-pre-opening type clamp, the big foot on the non-pre-opening type clamp abuts the first groove, and the small foot on the non-pre-opening type clamp abuts the second groove. Since the contact area between the non-pre-opening type clamp and the pliers head is larger than the contact area between the pliers and the non-pre-opening type clamp in the prior art, the non-pre-opening type clamp and the pliers head are stably abutted. Therefore, the non-pre-opening type clamp can be safely opened when the pliers head provided by the present invention is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the clamp assembly in this embodiment;

[0019] Figure 2 is a three-dimensional diagram of a non-pre-opening clamp in this embodiment;

[0020] Figure 3 is a schematic diagram of the clamp release pliers in this embodiment;

[0021] Figure 4 is a front view of the first abutment joint in this embodiment;

[0022] Figure 5 is a left side view of the first abutment joint in this embodiment;

[0023] Figure 6 is a top view of the first abutment joint in this embodiment;

[0024] Figure 7 is a three-dimensional diagram of the first abutment joint in this embodiment;

[0025] Figure 8 is a front view of the second abutment joint in this embodiment;

[0026] Fig. 9 is a cross-sectional view of the second abutment joint in this embodiment; and

[0027] Fig.104 is a three-dimensional diagram of the second abutment joint in this embodiment. DETAILED DESCRIPTION

[0028] 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.

[0029] Figure 1 Schematic diagram of the clamp assembly in this embodiment.

[0030] like Figure 1 As shown, the clamp assembly 100 in this embodiment includes a non-pre-opening clamp 1 and a clamp releasing pliers 2 .

[0031] Figure 2 It is a three-dimensional diagram of the non-pre-opening clamp in this embodiment.

[0032] like Figure 2 As shown, the pre-opening clamp 1 in this embodiment includes a clamping body 11 , a large foot 12 , a supporting portion with a small foot 13 , and a limiting plate 14 .

[0033] The clamping body 11 is a C-shaped plate, and a clearance groove is formed at one end of the clamping body 11 .

[0034] The big foot 12 is disposed at one end of the clamping body 11 having the clearance groove and is located on the outer side of the clamping body 11 .

[0035] The abutting part is an arc-shaped plate with a large end and a small end. The width of the abutting part gradually decreases from the large end to the small end, and the width of the abutting part is smaller than the width of the clearance groove. The large end of the abutting part is installed at the other end of the clamping body 11, and the small end has a small foot 13 bent outward.

[0036] The limiting plate 14 is located between the big foot 12 and the small foot 13 , and one end of the limiting plate 14 is installed on the big foot 12 , and the other end is arranged toward the small foot 13 .

[0037] In this embodiment, the pre-opening clamp 1 is an integrally formed structure, and the clamping body 11 , the big foot 12 , the small foot 13 and the limit plate 14 are formed by stamping and bending the strip plate.

[0038] Figure 3 Schematic diagram of the clamp release pliers in this embodiment.

[0039] like Figure 3 As shown, the clamp releasing pliers 2 include a pliers body 21 , a locking mechanism 22 and a pliers head 23 .

[0040] The pliers body 21 includes a first hinge rod 211 and a second hinge rod 212 .

[0041] 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 is provided near the mounting end.

[0042] 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 adapted to the hinge boss is provided near the mounting end. The second hinged rod 212 is sleeved on the hinge boss 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.

[0043] The locking mechanism 22 includes a positioning pin 221 , a positioning plate 222 and a return spring 223 .

[0044] The positioning pin 221 is installed on the first hinge rod 211 and is close to the operating end.

[0045] 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.

[0046] 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 .

[0047] 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.

[0048] The clamp head 23 includes a first abutment head 231 and a second clamp head 232 .

[0049] Figure 4 is a front view of the first abutment joint in this embodiment, Figure 5 2 is a left side view of the first abutment joint in this embodiment. Figure 6 is a top view of the first abutment joint in this embodiment and Figure 7 It is a three-dimensional diagram of the first abutment head in this embodiment.

[0050] like Figures 4 to 7 As shown, the main body 2311 of the first abutment joint 231 is in the shape of a rectangular parallelepiped, and a first bolt 2312 adapted to the first threaded hole on the first hinge rod 211 is provided on the bottom surface of the main body 2311 of the first abutment joint 231, so that the first abutment joint 231 is detachably connected to the first hinge rod 211 through the first bolt.

[0051] The top surface of the main body 2311 of the first abutting head 231 has a first clamping groove 23a adapted to the large foot 12 of the non-pre-opening clamp, and the first clamping groove 23a is formed by a first inclined surface 231a and a second inclined surface 231b.

[0052] In this embodiment, the first inclined surface 231a and the top surface of the main body 2311 have an included angle of 45°, and the second inclined surface 231b and the top surface of the main body 2311 have an included angle of 45°, so that the included angle between the first inclined surface 231a and the second inclined surface 231b is 90°.

[0053] The limiting platform 2313 is installed on the top surface of the main body 2311 and is located on one side of the first slot 23a. The limiting platform 2313 has a fourth inclined surface 231c, which is at an angle of 45° with the top surface of the main body 2311 and is connected to the first inclined surface 231a so that the first inclined surface 231a and the fourth inclined surface 231c are coplanar.

[0054] In this embodiment, the length of the limiting platform 2313 is less than the length of the first slot 23 a . In addition, the limiting platform 2313 has a sixth inclined surface disposed opposite to the fourth inclined surface 231 c .

[0055] The abutting platform 2314 is installed on the top surface of the main body 2311 and is located at the other side of the first slot 23 a , so that the abutting platform 2314 and the limiting platform 2313 are arranged opposite to each other.

[0056] One end of the support platform 2314 has a fifth inclined surface 231d, which is 45° from the top surface of the main body 2311 and connected to the second inclined surface 231b so that the second inclined surface 231b and the fifth inclined surface 231d are coplanar. The other end of the support platform 2314 is rounded.

[0057] Figure 8 is a front view of the second abutment joint in this embodiment, Fig. 9 is a cross-sectional view of the second abutment in this embodiment and Fig.10 4 is a three-dimensional diagram of the second abutment joint in this embodiment.

[0058] like Figures 8 to 10 As shown, the main body 2321 of the second abutment joint 232 is cylindrical, and the bottom end of the main body 2321 has a second bolt 2322 that is compatible with the second threaded hole on the second hinge rod 212. The second abutment joint 232 is detachably connected to the second hinge rod 212 through the second bolt, so that the second slot 23b on the second abutment joint 232 is arranged opposite to the first slot 23a on the first abutment joint 231.

[0059] The top of the main body 2321 has a first flat surface 232a, a second flat surface 232b, a third inclined surface 232b and a concave surface 232d.

[0060] The first plane 232a is located below the second plane 232b.

[0061] The third inclined surface 232c is connected to the first plane 232a and forms an angle of 45° with the first plane 232a.

[0062] The upper side of the concave surface 232d is connected to the second plane 232b, and the lower side is connected to the third inclined surface 232b, so that the concave surface 232d and the third inclined surface 232b form a second clamping groove 23b.

[0063] In this embodiment, the included angle between the concave surface 232d and the second plane is 45°, so that the second slot is 90°.

[0064] When the clamp assembly 100 provided in this embodiment is used for fixing:

[0065] 1. Open the clamp release pliers 2 and place the large foot 12 of the non-pre-opened clamp 1 against the first slot 23a, and the small foot 13 against the first slot 23b.

[0066] 2. Tighten the clamp release pliers 2 to make the non-pre-opening clamp 1 in an open state.

[0067] 3. Put the non-pre-opening clamp 1 in the opened state onto the pipe fitting, loosen the clamp release pliers 2, and the non-pre-opening clamp 1 shrinks under its own elastic force to fix the pipe fitting.

[0068] In addition, when the clamping clamp release pliers 2 opens the non-pre-opening clamp 1, the positioning plate 222 is clamped on the positioning pin 221, so that the non-pre-opening clamp 1 is always in an open state, preventing the operator from always holding the clamp release pliers 2, thereby reducing the operator's work intensity.

[0069] Functions and Effects of the Embodiments

[0070] According to the clamp assembly involved in the present invention, there are a non-pre-opening clamp and a clamp release pliers, wherein the clamp release pliers has a clamp head, the first abutment head of the clamp head has a first clamping groove adapted to the large foot on the non-pre-opening clamp, and the second abutment head of the clamp head has a second clamping groove adapted to the small foot on the non-pre-opening clamp. Therefore, when opening the non-pre-opening clamp, the clamp head is installed on the clamp body, and the large foot on the non-pre-opening clamp is pressed against the first clamping groove, and the small foot on the non-pre-opening clamp is pressed against the second clamping groove. Since the contact area between the non-pre-opening clamp and the clamp head is larger than the contact area between the pliers and the non-pre-opening clamp in the prior art, the non-pre-opening clamp and the clamp head are stably pressed. Therefore, the non-pre-opening clamp can be safely opened by using the clamp head provided by the present invention.

[0071] In addition, since a limiting platform is provided on one side of the first clamping groove, the limiting boss abuts against the limiting plate after the non-pre-opening clamp is opened, thereby preventing the non-pre-opening clamp from being separated from the clamp head.

[0072] Furthermore, since the clamp release pliers have a locking mechanism, the first hinge rod and the second hinge rod can be kept in a fixed position by clamping the positioning plate on the positioning pin, without the user having to hold the pliers body tightly for a long time to keep the non-pre-opening clamp in an open state.

[0073] Furthermore, since the height of the second plane on the second abutment joint is higher than the height of the first plane, the contact area between the concave surface and the small foot is increased, thereby preventing the small foot from detaching from the second abutment joint.

[0074] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A clamp head, used for being mounted on a clamp body to open a non-pre-opening elastic clamp, the non-pre-opening elastic clamp having a clamp body, a large foot and a small foot arranged on the clamp body, and a limit plate with one end arranged on the large foot and the other end arranged toward the small foot, characterized in that: include: A first abutment head, comprising a first slot adapted to the large foot, a limiting platform located at one side of the first slot, and an abutment platform located at the other side of the first slot and arranged opposite to the limiting platform; and The second abutment head has a second slot adapted to the small foot, The first abutment head has a first inclined surface and a second inclined surface connected to each other, the first inclined surface and the second inclined surface form the first clamping groove, and the cross section of the first clamping groove is V-shaped. The second abutment head has a concave surface, a third inclined surface and a first flat surface. The concave surface is connected to the third inclined surface, and the concave surface and the third inclined surface form the second clamping groove, and the cross section of the second clamping groove is V-shaped. The first plane is located at one side of the second slot and is connected to the third inclined plane. The limiting platform has a fourth inclined surface connected to the first inclined surface, and the fourth inclined surface is coplanar with the first inclined surface. The abutment platform has a fifth inclined surface connected to the second inclined surface, and the fifth inclined surface is coplanar with the second inclined surface. The length of the limiting platform is smaller than the length of the first card slot. After the pre-opened elastic clamp is opened using the pliers, the limiting platform abuts against the limiting plate.

2. The pliers head according to claim 1, characterized in that: in, The second abutment head also includes a second plane located at the other side of the second slot and connected to the concave surface, and the second plane is located above the first plane.

3. The pliers head according to claim 2, characterized in that: in, The main body of the second abutment joint is cylindrical, the top of the main body has the first plane, the second plane, the third inclined surface and the concave surface, and the bottom of the main body has a second bolt. The included angle between the first plane and the third inclined plane is 45°. The included angle between the concave surface and the second plane is 45°.

4. The pliers head according to claim 1, characterized in that: in, One end of the supporting platform has the fifth inclined surface, and the other end is rounded.

5. The pliers head according to claim 1, characterized in that: in, The first abutment joint further comprises a main body in the shape of a rectangular parallelepiped, the top end of the main body comprises the first clamping groove, the limiting platform and the abutment platform, and the bottom end of the main body comprises a second bolt. The angle between the first inclined surface and the top surface of the main body is 45°. The included angle between the first inclined surface and the second inclined surface is 90°.

6. The pliers head according to claim 1, characterized in that: in, The included angle of the first card slot is 60°~120°, and the included angle of the second card slot is 60°~120°.

7. A clamp release pliers, characterized in that: include: A pliers body having a first hinged rod and a second hinged rod rotatably connected; The pliers head has 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 hinged rod and is adapted to be matched with the first abutment head. The pliers head is the pliers head described in any one of claims 1 to 6.

8. The clamp release pliers according to claim 7, 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.

9. The clamp release pliers according to claim 7, characterized in that: in, The first abutment joint is detachably connected to the first hinged rod by any one of a threaded connection, a snap connection or a pin connection. The second abutment joint can be detachably connected to the second hinged rod by any one of threaded connection, snap connection or pin connection. The first clamping groove on the first abutting head is arranged opposite to the second clamping groove on the second abutting head.

10. A clamp assembly for fixing a pipe fitting, characterized in that: include: A non-pre-opening clamp and a clamp releasing pliers for opening the non-pre-opening clamp, Wherein, the clamp releasing pliers are the clamp releasing pliers as described in any one of claims 7 to 9.

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