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, wherein the pliers head has a mounting surface, an inclined surface, a concave surface and a first plane, 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 clamp groove adapted to a large foot and a small foot, so that when the pliers head provided by the present invention is installed to open the pre-opening clamp, the large foot on the pre-opening clamp slides into the clamp groove along the inclined surface on one of the abutting joints, and the large foot on the pre-opening clamp slides into the clamp groove along the inclined surface on the other abutting joint, because 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 safely opened by using the pliers head, the clamp release pliers and the clamp assembly 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 its object is 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 transform a pre-opened elastic clamp from a released state to a pre-opened state. The pre-opened elastic clamp has a clamping body, a large foot and a small foot arranged at both ends of the clamping body, and includes: a pair of matching abutment heads, both of which have a mounting surface, an inclined surface, a concave surface and a first plane; wherein the mounting surface abuts against the pliers body, the inclined surface, the concave surface and the first plane are all located on the opposite side of the mounting surface, the first plane is connected to the concave surface and is located at one end of the concave surface, the inclined surface is connected to the concave surface and is located at the other end of the concave surface, the concave surface is an arc surface, and the concave surface and the first plane form a clamping groove matching the large foot and the small foot.

[0011] The pliers head provided by the present invention may also have the following features: the abutment head also includes a second plane and a third plane, the second plane is connected to the first plane, and the second plane is perpendicular to the first plane, and 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 feature: wherein the angle between the third plane and the inclined surface is 90°-180°.

[0013] The pliers head provided by the present invention may also have the following feature: wherein the third plane is located above the second plane.

[0014] The pliers head provided by the present invention may also have the following feature: the first plane is tangent to the concave surface, and the inclined surface is tangent to the concave surface.

[0015] A clamp releasing pliers comprises: a pliers body having a first hinged rod and a second hinged rod which are rotatably connected; and a pliers head having a pair of abutment joints which are detachably mounted on the head end of the first hinged rod and the head end of the second hinged rod, respectively, and the clamping grooves on the abutment joints face oppositely.

[0016] 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, mounted on the first hinged rod; a positioning plate, rotatably mounted 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 is used to fix a pipe fitting, comprising: a pre-opening clamp and a clamp releasing pliers for opening the pre-opening clamp, the pre-opening clamp comprising a clamping body, a big foot, a small foot and a nose bridge, the big foot and the small foot are respectively installed at two ends of the clamping body, one end of the nose bridge is installed on the small foot, and the other end faces the big foot, the end of the big foot has a first tilt that abuts against a slot, the end of the small foot has a second tilt that abuts against the slot, and the first tilt and the second tilt are opposite to each other.

[0018] The clamp assembly provided by the present invention may also have such a feature, wherein the big foot has a nose hole adapted to the bridge of the nose.

[0019] The clamp assembly provided by the present invention may also have such a feature, wherein the pre-open state is that the big foot is located between the bridge of the nose and the small foot and is against the bridge of the nose, and the released state is that the big foot is separated from the bridge of the nose.

[0020] Functions and Effects of the Invention

[0021] The pliers head involved in the present invention includes a pair of matching abutment heads, the abutment heads have a mounting surface, an inclined surface, a concave surface and a first plane, 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 groove matching the big foot and the small foot, so when the pliers head provided by the present invention is installed to open the pre-opening clamp, the big foot on the pre-opening clamp slides into the groove along the inclined surface on one of the abutment heads, and the big foot on the pre-opening clamp slides into the groove along the inclined surface on the other abutment head, because 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 safely opened when the pliers head provided by the present invention is used. 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 clamp release pliers in this embodiment;

[0025] Figure 4 is a three-dimensional diagram of the abutment joint in this embodiment;

[0026] Figure 5 is a front view of the abutment joint in this embodiment; and

[0027] Figure 6 4 is a top view of the 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 pre-opening clamp 1 and a clamp releasing pliers 2 .

[0031] Figure 2 Schematic diagram of the pre-opening clamp in this embodiment.

[0032] like Figure 2 As shown, the pre-opening clamp 1 includes a clamping body 11 and a supporting portion 12 and a limiting portion 13 respectively mounted at two ends of the clamping body 11 .

[0033] The clamping body 11 is a C-shaped plate.

[0034] The abutting portion 12 includes a small foot arc 121 and a small foot 122. One end of the small foot arc 121 is mounted on one end of the clamping body 11. The small foot 122 is mounted on the other end of the small foot arc 121 and is located on the outer side of the small foot arc 121.

[0035] In addition, a nose bridge 12b is provided on the outer side of the small foot arc 121 . The nose bridge 12b is located on one side of the small foot 122 and is inclined with respect to the small foot 122 .

[0036] The limiting portion 13 includes a large circular arc 131 and a large foot 132 .

[0037] The middle of the big foot arc 131 is hollowed out with a big foot 132. One end of the big foot arc 131 is mounted on the other end of the clamping body 11.

[0038] The big foot 132 is installed at the other end of the big foot arc 131 and is located on the outer side of the big foot arc 131. The big foot 132 has a circular through hole 13a and a nose hole located below the through hole and abutting against the nose bridge 12b.

[0039] In addition, the end of the small foot 122 has a first tilt 12c, and the end of the large foot 132 has a second tilt 13c, and the first tilt 12c and the second tilt 13c are opposite to each other.

[0040] The big foot 132 is located between the small foot 122 and the nose bridge 12b and when the big foot 132 is clamped in the nose eye with the nose bridge 12b, the pre-opening type clamp is in a pre-opening state. When the big foot 132 is separated from the nose bridge 12b, the pre-opening type clamp is in a released state.

[0041] Figure 3 Schematic diagram of the clamp release pliers in this embodiment.

[0042] like Figure 3 As shown, the clamp releasing pliers 2 include a pliers body 21 , a locking mechanism 22 and a pliers head 23 .

[0043] The pliers body 21 includes a first hinge rod 211 and a second hinge rod 212 .

[0044] 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.

[0045] 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.

[0046] The locking mechanism 22 includes a positioning pin 221 , a positioning plate 222 and a return spring 223 .

[0047] The positioning pin 221 is installed on the first hinge rod 211 and is close to the operating end.

[0048] 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.

[0049] 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 .

[0050] 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.

[0051] Figure 4 is a three-dimensional diagram of the abutment joint in this embodiment, Figure 5 is a front view of the abutment in this embodiment and Figure 6 4 is a top view of the abutment joint in this embodiment.

[0052] The clamp head 23 includes a pair of abutment parts 231 .

[0053] like Figures 4 to 6 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.

[0054] The bottom surface of the abutment head 231 is a mounting surface 231 a , and the abutment head 231 is mounted on the caliper body 21 via the mounting surface 231 a .

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] In this embodiment, the abutment joint 231 has a through hole that passes through the third plane 231c and the mounting surface 231a, one of the abutment joints 231 is installed on the first hinge rod 211 by bolt fixing, and the other abutment joint 231 is installed on the mounting end of the second hinge rod 212 by bolt fixing, and the mounting surfaces of the two abutment joints 231 are in contact with the hinge rod, so that the slots a on the two abutment joints 231 are arranged relative to each other.

[0061] When using the clamp assembly 100 provided in this embodiment for fixing, the positioning plate 222 is separated from the positioning pin 221, so that the pipe connection personnel can freely open the clamp release pliers 2, and then the big foot of the pre-opening clamp is pressed against the groove on one of the abutting joints, and the small foot is pressed against the groove on the other abutting joint, and the clamp release pliers 2 are clamped. The pre-opening clamp is deformed by the force, and the big foot passes over the bridge of the nose 12b and is located between the bridge of the nose 12b and the small foot. At this time, the nose eye of the bridge of the nose 12b is clamped on the big foot, so that the pre-opening clamp 1 is in a pre-opened state.

[0062] Functions and Effects of the Embodiments

[0063] According to the clamp assembly involved in this embodiment, there is a pair of matching abutment heads, the abutment heads have a mounting surface, an inclined surface, a concave surface and a first plane, 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 groove matching the big foot and the small foot, so when the clamp head provided by this embodiment is installed to open the pre-opening clamp, the big foot on the pre-opening clamp slides into the groove along the inclined surface on one of the abutment heads, and the big foot on the pre-opening clamp slides into the groove along the inclined surface on the other abutment head, because the contact area between the pre-opening clamp and the clamp 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 clamp head are stably abutted. Therefore, the pre-opening clamp can be safely opened when the clamp head provided by this embodiment is used.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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, and the user does not need to hold the clamp body tightly for a long time to keep the non-pre-opening clamp in the open state. In addition, the clamp release pliers can be closed by clamping the positioning plate on the positioning pin when not in use, which facilitates the management of the clamp release pliers.

[0071] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

[0072] 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.

Claims

1. A clamp head, used for being installed on a clamp 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 clamp body, a large foot and a small foot arranged at both ends of the clamp body, a nose bridge located on one side of the small foot and inclined relative to the small foot, the large foot having a circular through hole and a nose eye located below the through hole, characterized in that: include: A pair of matching abutment heads each having a mounting surface, and a third plane, an inclined surface, a concave surface, a first plane, and a second plane connected in sequence; Wherein, the abutment head is mounted on the pliers body through the mounting surface. The inclined surface, the concave surface and the first plane are all located on opposite sides of the mounting surface. The first plane is located at one end of the concave surface, The inclined surface is located at the other end of the concave surface, The first plane is perpendicular to the second plane, The third plane is parallel to the second plane and higher than the second plane, and the inclined surface is inclined relative to the third plane. 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 small foot, and the two sides of the concave surface are tangent to the first plane and the inclined surface respectively. When in use, the big foot is pressed against the slot of one of the abutment heads, and the small foot is pressed against the slot of the other abutment head. After the pliers are clamped, the clamp is deformed by force, so that the big foot passes through the nose bridge and is located between the nose bridge and the small foot. At this time, the nose bridge is clamped in the nose eye of the big foot, so that the clamp is in a pre-opened state. When the clamp is transformed from a released state to a pre-opened state, a pair of the third planes abut against each other to play a limiting role.

2. The pliers head according to claim 1, characterized in that: in, The included angle between the third plane and the inclined plane is 90°-180°.

3. 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 The pliers head has a pair of abutment heads which are detachably mounted on the head end of the first hinged rod and the head end of the second hinged rod, respectively, and the slots on the abutment heads face opposite directions. Wherein, the pliers head is the pliers head described in claim 1 or 2.

4. The clamp release pliers according to claim 3, 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.

5. A clamp assembly for fixing a pipe fitting, characterized in that: include: A pre-opening clamp and a clamp releasing pliers for opening the pre-opening clamp, Wherein, the clamp releasing pliers are the clamp releasing pliers as claimed in claim 3 or claim 4; The pre-opening clamp comprises a clamping body, a large foot, a small foot and a nose bridge. The big foot and the small foot are respectively installed at two ends of the clamping body. One end of the nose bridge is mounted on the small foot, and the other end faces the big foot. The end of the big foot has a first tilting protrusion that abuts against the slot, and the end of the small foot has a second tilting protrusion that abuts against the slot. The first tilting is opposite to the second tilting.

6. The clamp assembly according to claim 5, characterized in that: in, The big foot has a nose hole that matches the nose bridge.

7. The clamp assembly according to claim 5, characterized in that: in, The pre-opened state is that the big foot is located between the bridge of the nose and the small foot and abuts against the bridge of the nose. The released state is that the big foot is separated from the nose bridge.

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