WO2022057657A1

WO2022057657A1 - Holding device

Info

Publication number: WO2022057657A1
Application number: PCT/CN2021/116706
Authority: WO
Inventors: 张凯凯
Original assignee: 深圳市道通科技股份有限公司
Priority date: 2020-09-21
Filing date: 2021-09-06
Publication date: 2022-03-24
Also published as: CN112046195A

Abstract

A holding device (900), comprising a main body (100), two holding jaw assemblies (200) respectively connected to two opposite ends of the main body (100) and capable of being opened or closed relative to the central axis of the main body (100), and a traction module (300) installed on the main body (100) and connected to the two holding jaw assemblies (200). The two holding jaw assemblies (200) are located at two sides of the traction module (300); the traction module (300) is used for generating a pulling force on the holding jaw assemblies (200) when an external force pulls the two holding jaw assemblies (200) to move in the direction away from the traction module (300); when the holding jaw assemblies (200) are released, the traction module (300) pulls the two holding jaw assemblies (200) to move towards the traction module (300) and make the two holding jaw assemblies (200) be closed towards the central axis of the traction module (300), and therefore, the two holding jaw assemblies (200) tightly hold a tire together. Therefore, a user only needs to pull the two holding jaw assemblies (200) to mate with a tire in size, that is, the two holding jaw assemblies (200) can be quickly installed on a tire, installation time is saved, moreover, the central axis of the traction module (300) coincides with the central axis of a hub, and accurate positioning of wheels is facilitated.

Description

a clamping device

This application claims the priority of the Chinese patent application with the application number of 202010997966.2 and the application title of "a clamping device" filed with the China Patent Office on September 21, 2020, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the technical field of automobiles, and in particular, to a clamping device.

Background technique

In the process of automobile maintenance (eg, four-wheel alignment, ADAS calibration process), various auxiliary equipment needs to be installed on the wheel hub. Precise positioning is required when the clamping device is installed on the hub, but the existing clamping devices are divided into two categories, one can be quickly installed but cannot be accurately positioned, and the other can be accurately positioned but the installation operation is complicated and the installation time is long.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a clamping device, which can be precisely positioned with the wheel hub and has a simple installation method.

The embodiment of the present invention adopts the following technical solutions to solve its technical problems:

A clamping device, comprising:

main body;

Two jaw assemblies, the two jaw assemblies are respectively connected to opposite ends of the main body, and the two jaw assemblies can be opened or closed relative to the central axis of the main body, and the two jaw assemblies are a gripper assembly for gripping the tire of the wheel so that the gripping device is attached to the wheel;

a traction module, the traction module is mounted on the main body, the traction module is connected with the two jaw assemblies, and the two jaw assemblies are located on both sides of the traction module;

Wherein, the traction module is used for when an external force pulls the two jaw assemblies to move in a direction away from the traction module and open with respect to the central axis of the traction module, the traction module generates a force on the jaw assemblies. Pulling force, when the jaw assemblies are released, the pulling module will pull the two jaw assemblies to move toward the pulling module and close toward the central axis of the pulling module, so that the two jaw assemblies hold the tire together;

When the two clamping jaw assemblies are respectively used to hug the tire, the central axis of the traction module coincides with the central axis of the wheel hub.

Optionally, the traction module includes a rotating plate, a telescopic assembly and a connecting rod, the rotating plate is mounted on the main body, and the rotating plate can rotate relative to the main body, and one end of the telescopic assembly is connected to the main body. The rotating plate is connected, the other end of the telescopic assembly is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the clamping jaw assembly;

When the jaw assembly is pulled away from the traction module, the telescopic assembly pulls the rotating plate to rotate, so that the jaw assembly extends relative to the main body.

Optionally, the telescopic assembly includes a first telescopic assembly and a second telescopic assembly, and the connecting rod includes a first connecting rod and a second connecting rod;

One of the clamping jaw assemblies, the first connecting rod and the first telescopic assembly is connected in sequence, and the other clamping jaw assembly, the second connecting rod and the second telescopic assembly are connected in sequence.

Optionally, the telescopic assembly includes a cylindrical body, an elastic member and a telescopic rod, the cylindrical body is connected to the rotating plate, the elastic member is sleeved outside the telescopic rod, and the telescopic rod is accommodated in the telescopic rod. inside the cylinder, and one end of the telescopic rod protrudes out of the cylinder body and is connected with the connecting rod, one end of the elastic member is in contact with one end of the telescopic rod, and the other end of the elastic member is in contact with the connecting rod. The inner walls of the cylinders are in contact with each other.

Optionally, the traction module further includes a reset piece, one end of the reset piece is fixedly mounted on the main body, the other end of the reset piece is connected with the connecting rod, and the reset piece is used for connecting through the connecting rod. The rod exerts a pulling force on the jaw assembly.

Optionally, the reset member is a tension spring.

Optionally, the traction module further includes a pull-back member, one end of the pull-back member is fixedly mounted on the main body, and the other end of the pull-back member is connected to the rotating plate;

When the clamping jaw assembly is forced away from the traction module, the telescopic assembly pulls the rotating plate to rotate in a first direction, and the rotating plate stretches the pull-back member, and when the clamping jaw assembly is released , the retracting member resets and pulls the rotating plate to rotate along a second direction to drive the telescopic assembly to move, wherein the first direction is opposite to the second direction.

Optionally, the traction module further includes a guide member, the guide member is fixedly mounted on the main body, and the guide member is used to guide the connecting rod to extend or retract the main body in a directional manner.

Optionally, the guide member is provided with a guide hole, and one end of the connecting rod passes through the guide hole and is connected to the jaw assembly. When the jaw assembly is pulled to move away from the main body, The connecting rod moves along the guide hole.

Optionally, the clamping device further includes a locking module, the locking module is mounted on the main body, and the locking module is used for locking the traction module, so that the clamping claw assembly clamps the mentioned tires.

Optionally, the locking module includes a sawtooth bar, a pawl assembly, a pendulum rod and a handle, the sawtooth strip is mounted on the rotating plate, one end of the pendulum rod is connected to the pawl assembly, and the pendulum rod is connected to the pawl assembly. The other end of the rod is rotatably connected to the main body, the pawl assembly is connected to the handle, and one end of the handle is rotatably mounted on the main body;

When the handle is rotated, the pawl assembly moves with the handle, and when the pawl assembly engages the sawtooth bar, the rotating plate is in a locked state, when the pawl assembly and the When the sawtooth strips are separated, the rotating plate is in an unlocked state.

Optionally, the sawtooth strip and the rotating plate are integrally formed.

Optionally, the pawl assembly includes a link block and a pawl, one end of the link block is connected to the handle, and the other end of the link block is connected to the pawl and one end of the swing rod connected, and the other end of the pawl is used for hooking the sawtooth strip.

Optionally, the main body is provided with a lifting block;

The locking module further includes a torsion spring, which is installed on the connecting rod block, and one end of the torsion spring is in contact with the connecting rod block, and the other end is in contact with the pawl, so the torsion spring is in contact with the connecting rod block. the torsion spring is used for providing the pressure towards the sawtooth bar to the pawl;

When the pawl moves in the direction of the lifting block, so that the lifting block is inserted between the pawl and the sawtooth bar and separates the pawl and the sawtooth bar, the rotating plate is in an unlocked state, and when all the When the pawl moves away from the lifting block, so that the pawl and the sawtooth bar are no longer separated by the lifting block, under the action of the torsion spring, the pawl moves toward the sawtooth bar move, and engage the saw tooth bar, so that the rotating plate is in a locked state.

Optionally, the locking module further includes a limit block, one end of the limit block is rotatably connected to the main body, and the other end of the limit block is rotatably connected to the handle.

Optionally, the clamping claw assembly includes a connecting arm and a clamping claw, one end of the connecting arm is rotatably mounted on the main body, the other end of the connecting arm is movably connected with the clamping claw, and the connecting arm is connected to the main body. The traction module is connected.

The beneficial effects of the embodiments of the present invention are: the clamping device provided by the embodiments of the present invention includes a main body; two jaw assemblies, the two jaw assemblies are respectively connected to opposite ends of the main body, and the two jaw assemblies are The clamping jaw assemblies can be opened or closed relative to the central axis of the main body, and the two clamping jaw assemblies are used to clamp the tires of the wheel, so that the clamping device is attached to the wheel; the traction module, the traction The module is installed on the main body, and the pulling module is connected with the two clamping jaw assemblies, and the two clamping jaw assemblies are located on both sides of the pulling module; wherein, the pulling module is used to pull the two When the clamping jaw assembly moves away from the pulling module and is opened relative to the central axis of the pulling module, the pulling module generates a pulling force on the clamping jaw assembly, and when the clamping jaw assembly is released, the clamping jaw assembly is released. The traction module will pull the two jaw assemblies to move toward the traction module and close toward the central axis of the traction module, so that the two jaw assemblies jointly grip the tire. Therefore, the user only needs to pull the two gripping jaw assemblies to match the size of the tire, so that the two gripping jaw assemblies can be quickly installed on the tire, saving installation time, and at the same time, the center of the traction module is The axis coincides with the central axis of the hub, which is beneficial to the precise positioning of the wheel.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are denoted as similar elements, Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

FIG. 1 is a schematic structural diagram of a clamping device according to an embodiment of the present invention;

Fig. 2 is the schematic diagram of another angle of Fig. 1;

Fig. 3 is the structural representation of the main body in Fig. 1;

Fig. 4 is the structure exploded view of Fig. 3;

Fig. 5 is the structural representation of the mounting plate in Fig. 4;

Fig. 6 is the structural schematic diagram of the clamping jaw assembly in Fig. 1;

Fig. 7 is the assembly schematic diagram of the jaw assembly and the main body in Fig. 1;

Fig. 8 is the structural representation after installing the traction module of Fig. 7;

Fig. 9 is the structural representation of the rotating plate in Fig. 8;

Figure 10 is a schematic structural diagram of the telescopic assembly in Figure 8;

Fig. 11 is the structural representation after removing the main body in Fig. 2;

Figure 12 is a schematic diagram of another angle of Figure 11;

FIG. 13 is a schematic structural diagram of the pawl assembly in FIG. 11 .

detailed description

In order to facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element, or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, It is only for the convenience of describing the present invention and simplifying the description, not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the present invention. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. As used in this specification, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in FIGS. 1-2 , a clamping device 900 provided by one embodiment of the present invention includes a main body 100 , two clamping jaw assemblies 200 and a pulling module 300 . The two jaw assemblies 200 are respectively connected to opposite ends of the main body 100 , and the two jaw assemblies 200 can be opened or closed relative to the central axis of the main body 100 . The pulling module 300 is mounted on the main body 100 and is connected with the two clamping jaw assemblies 200 , and the two clamping jaw assemblies 200 are located on both sides of the pulling module 300 .

When an external force pulls the two jaw assemblies 200 to move away from the pulling module 300 and open relative to the central axis of the pulling module 300, the pulling module 300 generates a pulling force on the clamping jaw assemblies 200 and releases the The jaw assembly 200, the pulling module 300 will pull the two jaw assemblies 200 to move toward the pulling module 300 and close toward the central axis of the pulling module 300, so that the two jaw assemblies 200 collectively hugs the tires.

For the main body 100, an installation module is provided on the main body 100, the installation module is used for connecting external devices, and the installation module is provided with a central axis X. Preferably, the two jaw assemblies 200 are relative to each other. The central axis X is symmetrically arranged. The pulling module 300 can pull the two jaw assemblies 200 to move relative to the main body 100 at the same time, and the displacements of the two jaw assemblies 200 relative to the central axis X are the same, so that when the two When the clamping jaw assemblies 200 are respectively clamped on the edge of the tire, the central axis X coincides with the central axis of the wheel hub.

Referring to FIGS. 3-4 , the main body 100 includes a base 110 , a casing 120 and a mounting plate 130 , the base 110 is fixedly mounted on the casing 120 , and the mounting plate 130 is mounted on the casing 120 . The clamping jaw assembly 200 is mounted on the base 110 , the traction module 300 is accommodated in the housing 120 , and the mounting module is disposed on the housing 120 .

The base 110 includes a base portion 111 and two support portions 112 , and the two support portions 112 are respectively disposed on the base portion 111 . The base portion 111 is fixedly connected to the housing 120 , and the two support portions 112 are symmetrically arranged with respect to the central axis X. The base 110 is further provided with two support rod rotating shafts 113 , the two support rod rotating shafts 113 are respectively connected to the two supporting parts 112 , and each of the supporting rod rotating shafts 113 is respectively connected to one of the supporting parts 112 . Correspondingly, each of the support rod rotating shafts 113 is respectively connected with a corresponding one of the clamping jaw assemblies 200 . Wherein, the axis of the support rod rotating shaft 114 is perpendicular to the central axis X.

The casing 120 is in a circular concave shape, and a concave cavity with an open side is provided inside the casing 120 , and the traction module 300 is installed in the concave cavity. The housing 120 includes a bottom plate 121 and a frame 122, the bottom plate 121 is connected to one end of the frame 122, the bottom plate 121 and the frame 122 form the concave cavity, and the opening of the concave cavity is It is arranged at one end of the frame 122 away from the bottom plate 121 . The base 110 is installed on the other end of the frame 122, and the base 110 is arranged in the concave cavity. In this embodiment, the end face of the casing 120 at the end of the bottom plate 121 is defined as the bottom face of the casing 120 , and the end face of the casing 120 with the opening of the concave cavity is defined as the bottom face of the casing 120 . The end surface defines an opening surface of the housing 120 , wherein the mounting plate 130 is mounted on the bottom plate 121 , and the mounting plate 130 faces away from the bottom surface 121 . When the clamping device 900 is clamped on the tire, the opening surface of the casing 120 faces the hub, and the bottom surface of the casing 120 is away from the hub.

It can be understood that, in some other embodiments, the structure of the housing 120 may also be an oval concave structure, a long beam-like structure, a rectangular plate-like structure, etc., as long as the jaw assembly can be provided. 200 and the installation position of the traction module 300 are sufficient.

A connecting through hole 1211 is formed in the middle of the bottom plate 121 , and the connecting through hole 1211 penetrates through the bottom plate 121 . In this embodiment, the mounting plate 130 is connected to the bottom plate 121 after passing through the connecting through holes 1211 by screws, and the central axis of the connecting through holes 1211 is the central axis X. In some other embodiments, in order to enable the clamping device to install the auxiliary calibration equipment, the clamping device 900 is provided with the installation module, for example, a receiving connection extending from the housing 120 in a direction away from the bottom plate 121 The protrusion of the through hole 1211, the protrusion is provided with a through hole for installation, and the center axis of the through hole coincides with the center axis of the connecting through hole 1211, and the protrusion is provided with a connecting hole. The central axis of the hole 1211 is vertical to the retaining structure. When the auxiliary calibration device is installed on the protrusion, the auxiliary calibration device can be firmly abutted with the protrusion through the retaining device. Of course, the installation module can be implemented in other ways, not limited to this. As long as the protruding structure mentioned above can fix the auxiliary calibration device on the clamping device 900 , the specific implementation of the installation module is not limited in this application.

The frame 122 is provided with two installation grooves 1221, the installation grooves 1221 pass through the frame 122, and the position of each installation groove 1221 corresponds to the position of one of the support portions 112, respectively. The installation slot 1221 is used for the jaw assembly 200 to pass through to connect to the base 110 .

In some embodiments, the base 110 further includes a protective cover (not shown), and the protective ring is installed on an end of the frame 122 away from the bottom plate 121 . The protective cover is made of a material with less hardness, for example, an elastic material such as plastic, rubber, and silicone. When the clamping device 900 is clamped on the tire, the protective sleeve abuts against the end surface of the wheel hub, which can prevent the rigid shell 120 from directly contacting the wheel hub and damaging the wheel hub surface. In this embodiment, in order to adapt to the structural shape of the housing 120 , the protective cover is provided in a circular shape. It can be understood that, in some other embodiments, the protective cover can also be set to other shapes according to actual conditions, such as an oval ring, a rectangular ring, a long strip, etc., as long as the shape of the protective cover is the same as The shape of the casing 120 can be adapted to suit.

It is understandable that the auxiliary calibration equipment can be a target with a calibration image, a laser used for positioning the vehicle calibration equipment or used in conjunction with the vehicle calibration equipment, a reflective device, etc., which are not limited herein. When the clamping device 900 is clamped on the wheel, the connecting through hole 1211 is aligned with the center of the hub, that is, the central axis of the connecting through hole 1211 coincides with the central axis of the hub, and the central axis of the mounting module also coincides with the central axis of the hub. In the embodiment of the present application, the coincidence of the two center axes can be understood as the connecting through hole at the center of the wheel hub, so as to ensure that the auxiliary calibration device is installed in the center of the wheel hub, and the accuracy of the calibration device for the calibration calculation of the vehicle is ensured.

Referring to FIG. 5 , the mounting plate 130 includes a base plate portion 131 , a bushing portion 132 , two guide portions 133 , a first convex portion 134 , a second convex portion 135 and an extension portion 136 . The boss portion 132 is located at the center of the base plate portion 131 , and the central axis of the boss portion 132 coincides with the central axis of the base plate portion 131 , and the two guide portions 133 are symmetrically arranged on the base plate At both ends of the portion 131 , the first protruding portion 134 and the second protruding portion 135 are disposed on the substrate portion 131 , and the extension portion 136 is connected to the substrate portion 131 . The base plate portion 131 is provided with a central through hole 1311 and a lifting block 1312 , the central through hole 1311 is located in the middle of the base plate portion 131 , and the central axis of the central through hole 1311 is aligned with the axis of the sleeve portion 132 . The central axes are coincident, and the lifting block 1312 is located at one end of the base plate 131 . The guide portion 133 is provided with a groove 1331, and the groove 1331 is arc-shaped. When the mounting plate 130 is mounted on the bottom plate 121 , the central axis of the bushing portion 132 coincides with the central axis of the connecting through hole 1211 .

Referring to FIGS. 6-7 , the clamping jaw assembly 200 includes a connecting arm 210 and a clamping jaw 220 . One end of the connecting arm 210 is rotatably mounted on the main body 100 , and the other end of the connecting arm 210 is connected to the main body 100 . The clamping jaw 220 is movably connected, and the connecting arm 210 is connected with the pulling module 300 . Specifically, one end of the connecting arm 210 is connected to the support rod rotating shaft 113 of the base 110 , and the connecting arm 210 can rotate around the support rod rotating shaft 113 .

The clamping jaw 220 includes a connecting rod 221 and a hook head 222, one end of the connecting rod 221 is movably connected with the connecting arm 210, and the other end of the connecting rod 221 is connected with the hook head 222, so the The hook head 222 is used for hooking the tire. In some embodiments, the clamping jaw 220 further includes a holding block 223 , the holding block 223 is mounted on the connecting rod 221 and wraps a part of the connecting rod 221 . It can be understood that the holding block 223 can be made of materials such as silicone or plastic, and of course can also be made of metal. The holding block 223 can prevent the outer surface of the connecting rod 221 from being cut to the user. For both hands, preferably, the holding block 223 is made of silicone.

Therefore, when the user needs to adjust the opening range of the jaw assembly 200 relative to the main body 100, he only needs to hold the holding block 223 by hand, and wrap the connecting rod 221 around the The connecting arm 210 swings, and at the same time the connecting arm 210 can be rotated, so that the connecting arm 210 rotates around the pivot shaft 113 of the support rod, so that the two jaws 220 can adjust the opening amplitude more quickly, so as to Better fit to the tire for quick installation.

Referring to FIG. 8 , the traction module 300 is installed in the middle of the mounting plate 130 , and the traction module 300 includes a rotating plate 310 , a telescopic assembly 320 and a connecting rod 330 . The rotating plate 310 is installed on the main body 100, and the rotating plate 310 can rotate relative to the main body 100. One end of the telescopic assembly 320 is connected to the rotating plate 310, and the other end of the telescopic assembly 320 is connected to the rotating plate 310. It is connected with one end of the connecting rod 330 , and the other end of the connecting rod 330 is connected with the clamping jaw assembly 200 . Therefore, when the clamping jaw assembly 200 is pulled away from the traction module 300, the telescopic assembly 320 pulls the rotating plate 310 to rotate, so that the clamping jaw assembly 200 extends relative to the main body 100 to reach the tire the edge of the gripper jaw assembly 200 is released, and the telescopic assembly 320 retracts, so that the gripper jaw assembly 200 can catch the tire.

As shown in FIG. 9 , the rotating plate 310 includes a first sub-board 311 , a second sub-board 312 and a connecting plate 313 , two ends of the connecting plate 313 are respectively connected to the first sub-board 311 and the The second daughter board 312 . The first sub-board 311 is provided with a first through hole 3111 and a second through hole 3112 , the second sub-board 312 is provided with a third through hole 3121 , and the connecting plate 313 is provided with a limiting hole 3131 . When the rotating plate 310 is mounted on the mounting plate 130 , the limiting hole 3131 is sleeved on the bushing portion 132 , and the central axis of the limiting hole 3131 is the same as the center of the bushing portion 132 . Axes coincide. In specific use, the connecting plate 313 rotates around the central axis of the bushing portion 132 , so that the first sub-plate 311 and the second sub-plate 312 and the connecting plate 313 rotate.

As shown in FIG. 10 , the telescopic assembly 320 includes a cylindrical body 321 , an elastic member 322 and a telescopic rod 323 , the cylindrical body 321 is connected to the rotating plate 310 , and the elastic member 322 is sleeved on the telescopic rod 323, the telescopic rod 323 is accommodated in the cylinder 321, and one end of the telescopic rod 323 extends out of the cylinder 321 and is connected to the connecting rod 330, and one end of the elastic member 322 is connected to the One end of the telescopic rod 323 abuts against, and the other end of the elastic member 322 abuts against the inner wall of the cylindrical body 321 . Therefore, when the user pulls the jaw assembly 200 to move away from the pulling module 300, the connecting rod 330 is gradually pulled out of the main body 100, and as the pulling distance of the user increases, the The telescopic rod 330 gradually compresses the elastic member 322, so that the telescopic rod 330 can obtain more elongation. During the pulling process, the cylinder 321 also moves along with the pulling of the connecting rod 330 , thereby driving the rotating plate 310 to rotate. In this embodiment, the number of the telescopic components 320 is two groups, which are a first telescopic component (not shown) and a second telescopic component (not shown), and the number of the connecting rods 330 is also two, respectively For the first connecting rod (not shown) and the second connecting rod (not shown), one of the clamping jaw assemblies, the first connecting rod and the first telescopic assembly are connected in sequence, and the other clamping jaw assembly, The second connecting rod and the second telescopic assembly are connected in sequence. In addition, the first connecting rod and the second connecting rod are also symmetrically disposed on the rotating plate 310, and the first telescopic assembly and the second telescopic assembly are symmetrically disposed on the rotating plate 310. Specifically, the The first telescopic assembly is connected to the first sub-board 311 , and the second telescopic assembly is connected to the second sub-board 312 . Understandably, one connecting piece passes through the first through hole 3111 of the rotating plate 310 and is connected to the first telescopic assembly, and the other connecting piece passes through the third through hole of the rotating plate 310 After 3121, it is connected with the second telescopic assembly. Therefore, when the two jaw assemblies 200 move away from the pulling module 300, since the first telescopic assembly and the second telescopic assembly are both connected to the rotating plate 310 and are symmetrically arranged, it is possible to make The two clamping jaw assemblies 200 are opened to the same extent relative to the main body 100 to ensure that when the clamping device 900 is installed on the hub, the central axis of the rotating plate 310 coincides with the central axis of the hub.

Referring to FIG. 8 and FIG. 11 , in some embodiments, the traction module 300 further includes a guide member 340 , the guide member 340 is fixedly mounted on the main body 100 , and the guide member 340 is used to guide the connecting rod 330 is directed to extend or retract the body 100 . Specifically, the guide member 340 is mounted on the guide portion 133 of the mounting plate 130 , and specifically, the guide member 340 is mounted on the groove 1331 . The guide member 340 is provided with a guide hole (not shown), the guide member 340 is sleeved on the connecting rod 330 , and the guide hole (not shown) wraps the connecting rod 330 . In this embodiment, the guide member 340 is a sliding bearing. Therefore, when the user pulls the jaw assembly 200 to move away from the main body, the connecting rod 330 moves along the limiting hole 341, so that the two jaw assemblies 200 can be ensured relative to the The centerline axis of the main body 100 opens or closes, and prevents the jaws 220 from rotating relative to the main body 100 .

In some embodiments, the traction module 300 further includes a reset member 350, one end of the reset member 350 is fixedly mounted on the main body 100, and the other end of the reset member 350 is connected with the connecting rod 330, the The reset member 350 is used to generate a pulling force on the jaw assembly 200 through the connecting rod 330 . In this embodiment, the reset member 350 is a tension spring, one end of the tension spring is fixedly connected to the mounting plate 130 , and the other end of the tension spring is connected to the connecting rod 330 . It can be understood that when the clamping jaw 220 is pulled, the connecting arm 210 is also rotated, and the connecting rod 330 is stretched and moved in a direction away from the central axis of the main body 100. At this time, the The tension spring is gradually stretched, and when the two jaw assemblies 200 are unfolded to fit the outer dimensions of the tire, the jaws 220 are released, and the elastic member 322 of the telescopic assembly 320 recovers the deformation , so that the telescopic rod 323 and the tension spring pull the connecting rod 330 to move toward the center axis of the main body 100 , so as to drive the movement of the clamping jaw 220 and realize the clamping jaw 220 . reset. In this embodiment, the number of the reset members 350 is two, and one end of each reset member 350 is connected to the connecting rod 330 , and the other end is fixedly installed on the rotating plate 310 .

In some embodiments, the pulling module 300 further includes a pulling member 360 , one end of the pulling member 360 is fixedly installed on the main body 100 , and the other end of the pulling member 360 is connected to the other end of the pulling member 360 . connection; when the jaw assembly 200 is forced away from the traction module 300, the telescopic assembly 320 pulls the rotating plate 310 to rotate in the first direction, and the rotating plate 310 stretches the pull-back member 360, When the jaw assembly 200 is released, the retracting member 360 is reset and pulls the rotating plate 360 to rotate in a second direction, so as to drive the telescopic assembly 320 to move, wherein the first direction is the same as the second direction. The two directions are opposite. For ease of understanding, taking the perspective of FIG. 12 as an example, the first direction is a clockwise direction, and the second direction is a counterclockwise direction. Therefore, during installation and use, it is only necessary to open the two clamping jaws 220 to match the size of the wheel hub. During the process of opening the two clamping jaws 220, the rotating plate 310 rotates and The pull-back member 360 is stretched, and after the two clamping claws 220 are released, the pull-back member 360 resumes its deformation, which will pull the rotating plate 310 to reversely rotate, thereby pulling the two clamping claws 220 Towards the central axis of the body 100, the gripping device achieves quick attachment of the tire.

Referring to FIG. 2 again, in some embodiments, the clamping device 900 further includes a locking module 400, the locking module 400 is mounted on the main body 100, and the locking module 400 is used for locking the pulling module 300 to allow the gripper assembly 200 to grip the tire.

11 and 12 , the locking module 400 includes a sawtooth bar 410 , a pawl assembly 420 , a swing rod 430 and a handle 440 . The sawtooth bar 410 is installed on the rotating plate 310 , and the swing rod One end of 430 is connected with the ratchet assembly 420, the other end of the swing rod 430 is rotatably mounted on the main body, the ratchet assembly is connected with the handle, and one end of the handle is rotatably connected with the main body 100 . When the handle 440 is rotated, the pawl assembly 420 moves with the handle 440, and when the pawl assembly 420 engages the sawtooth 410, the rotating plate 310 is in a locked state, and when the When the pawl assembly 420 is separated from the sawtooth bar 410, the rotating plate 310 is in an unlocked state.

Specifically, the sawtooth bar 410 is installed on the side of the rotating plate 310 , and the saw teeth of the sawtooth bar 410 are arranged in a direction away from the rotating plate 310 . One end of the swing rod 430 is hinged with the pawl assembly 420 , the other end of the swing rod 430 is sleeved on the shaft sleeve portion 132 of the mounting plate 130 , and the overall length of the swing rod 430 is greater than The turning radius of the turning plate 310 . The handle 440 is rotatably hinged with the first protrusion 134 of the mounting plate 130 . Therefore, when the handle 440 rotates with the central axis of the first convex portion 134 as the center of rotation, the handle 440 drives the pawl assembly 420 to move, so as to indirectly drive the pawl assembly 420 to move, so that The pawl assembly 420 engages or does not engage the sawtooth bar 410 .

In some embodiments, the sawtooth strip 410 is integrally formed with the rotating plate 310 , that is, a plurality of saw teeth are opened at the side end of the rotating plate 310 to form the sawtooth strip 310 . Of course, the sawtooth strips 410 and the rotating plate 310 can also be set independently. In this embodiment, the sawtooth strips 410 and the rotating plate 310 are integrally formed to reduce the difficulty of assembling the clamping device 900 . , while ensuring the accuracy of the assembly of the pawl assembly 420 and the sawtooth bar 410 .

As shown in FIG. 13 , the pawl assembly 420 includes a link block 421 and a pawl 422 . One end of the link block 421 is connected to the handle 440 , and the other end of the link block 421 is connected to the handle 440 . The pawl 422 is connected to one end of the swing rod 430 , and the other end of the pawl 422 is used for hooking the serrated bar 410 . In this embodiment, the link block 421 is integrally formed in the shape of a fork, and includes a rod-shaped portion 4211 and a lug portion 4212. One end of the rod-shaped portion 4211 is connected to the handle 440. The other end of the portion 4211 is connected to the lug portion 4212 . Wherein, the lug portion 4212 is provided with an accommodating space, and one end of the pawl 422 extends into the accommodating space and is hinged with the lug portion 4212.

In some embodiments, the locking module 400 further includes a torsion spring 450, the torsion spring 450 is mounted on the connecting rod block 421, and one end of the torsion spring 450 abuts on the connecting rod block 421, The other end is in contact with the ratchet pawl 422 , and the torsion spring 450 is used to provide the ratchet pawl 422 with a pressure toward the sawtooth bar 410 . Specifically, a connecting shaft (not shown) is inserted through the lug portion 4212 of the connecting rod block 421, the torsion spring 450 is sleeved on the connecting shaft, and one end of the torsion spring 450 is connected to the connecting shaft. The outer side wall of the lug portion 4212 is in contact with each other, and the other end of the torsion spring 450 is in contact with the side of the pawl 422 close to the sawtooth bar 410 .

When the pawl 422 moves in the direction of the lifting block 1312 , so that the lifting block 1412 is inserted between the pawl 422 and the serrated bar 410 , the pawl 422 and the serrated bar 410 are moved. separation, the pawl 422 is lifted by the lifting block 1412, the rotating plate 410 is in an unlocked state, and the torsion spring 450 is squeezed by the pawl 422; when the pawl 422 moves away from When the lifting block 1412 moves in the direction so that the pawl 422 and the sawtooth bar 410 are no longer separated by the lifting block 1412, the torsion spring 450 restores its deformation, and under the action of the torsion spring, The pawl 422 moves toward the serrated bar 410, and engages the serrated bar 410, so that the rotating plate 310 is in a locked state.

In some embodiments, the locking module 400 further includes a limit block 460 , one end of the limit block 460 is rotatably connected to the main body 100 , and the other end of the limit block 460 is rotated with the handle 440 . connect. Specifically, one end of the limiting block 460 is connected to the second convex portion 135 of the mounting plate 130 , and the other end of the limiting block 460 is hinged to the handle 440 . Understandably, when the pawl 422 engages the sawtooth bar 410, the handle 440 continues to be rotated, and when the limiting block 460 and the link block 421 are in the same line, the link block 421 , The crank connecting rod mechanism formed by the swing rod 430 and the limit block 460 is in a stuck state, and the position of the limit block 460 is the dead center position of the crank connecting rod mechanism, and the handle 440 is a power source for adjusting the crank connecting rod mechanism.

During installation and use, the user only needs to move the two clamping jaws 220 to open relative to the central axis of the main body 100, and simultaneously pull the connecting arm 210 to rotate relative to the support rod shaft 113, so that the The connecting arm 210 pulls the connecting rod 330 out of the main body 100 , and the other end of the connecting rod 330 drives the telescopic assembly 320 to move, thereby driving the rotating plate 310 to rotate in the first direction. After the opening range of the two clamping jaws 220 is adapted to the outer dimensions of the tire, the two clamping jaw assemblies 200 are released. Under the action of the pulling member 360, the rotating plate 310 moves along the Rotate in two directions, thereby pulling the connecting rod 330 to retract into the main body 100 to drive the two jaw assemblies 200 to move toward the central axis of the main body 100 , so that the two jaw assemblies 200 share the same Hook the tire. Further, in order to improve the stability of the clamping device 900 and the wheel, the clamping device 900 is further provided with a locking module 400. Specifically, the user only needs to move the handle 440 to make the handle 440 is rotated until the crank link mechanism is at the dead center position, so that the locking module 400 is in a fully locked state. During the movement of the handle 440, the pawl 422 first engages the sawtooth bar 410, and drive the rotating plate 310 to rotate in the second direction, so that the telescopic assembly 320 moves, and the cylinder 321 squeezes the elastic member 322, the elastic member 322 restores the deformation, the elastic The member 322 exerts a force to pull the telescopic rod 323 to move, and the telescopic rod 323 drives the connecting rod 330 to retract into the main body 100 , so that the two jaw assemblies 200 further clamp the tires, thereby ensuring that the clamping device 900 is securely mounted on the wheel. Wherein, the two jaw assemblies 200 are symmetrically mounted on the main body 100 and are symmetrical about the central axis of the main body 100 . In addition, the two clamping jaw assemblies 200 are indirectly connected to the rotating plate 310 through two sets of symmetrically installed telescopic assemblies 320 and connecting rods 330, which can ensure that the opening amplitudes of the two clamping jaw assemblies 200 are the same. Therefore, it is ensured that when the clamping device 900 is installed on the wheel, the central axis of the main body 100 coincides with the central axis of the wheel hub.

The clamping device 900 provided by the embodiment of the present invention includes a main body 100; two clamping jaw assemblies 200, the two clamping jaw assemblies 200 are respectively connected to opposite ends of the main body 100, and the two clamping jaw assemblies 200 can be opened or closed relative to the central axis of the main body 100, the two clamping jaw assemblies 200 are used to clamp the tire of the wheel, so that the clamping device 900 is attached to the wheel; the traction module 300, the The traction module 300 is installed on the main body 100, and the traction module 300 is connected with the two jaw assemblies 200, and the two jaw assemblies 200 are located on both sides of the traction module 300; wherein, the traction module 300 is used for when an external force pulls the two jaw assemblies 200 to move in a direction away from the traction module 300 and open relative to the central axis of the traction module 300, the traction module 300 produces an effect on the jaw assemblies 200. When the jaw assembly 200 is released, the pulling module 300 will pull the two jaw assemblies 200 to move toward the pulling module 300 and close toward the central axis of the pulling module 300, so that the two The jaw assemblies 200 collectively hold the tire. Therefore, the user only needs to pull the two gripper assemblies 200 to match the size of the tire, so that the two gripper assemblies 200 can be quickly installed on the tire, saving installation time, and at the same time the traction module The central axis of 300 is coincident with the central axis of the hub, which is beneficial to the precise positioning of the wheel.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims

A clamping device, characterized in that it includes:

main body;

Two jaw assemblies, the two jaw assemblies are respectively connected to opposite ends of the main body, and the two jaw assemblies can be opened or closed relative to the central axis of the main body, and the two jaw assemblies are a gripper assembly for gripping the tire of the wheel so that the gripping device is attached to the wheel;

a traction module, the traction module is mounted on the main body, the traction module is connected with the two jaw assemblies, and the two jaw assemblies are located on both sides of the traction module;

Wherein, the traction module is used for when an external force pulls the two jaw assemblies to move in a direction away from the traction module and open with respect to the central axis of the traction module, the traction module generates a force on the jaw assemblies. Pulling force, when the jaw assemblies are released, the pulling module will pull the two jaw assemblies to move toward the pulling module and close toward the central axis of the pulling module, so that the two jaw assemblies hold the tire together;

When the two clamping jaw assemblies are respectively used to hug the tire, the central axis of the traction module coincides with the central axis of the wheel hub.
The clamping device according to claim 1, wherein the traction module comprises a rotating plate, a telescopic assembly and a connecting rod, the rotating plate is mounted on the main body, and the rotating plate can be relative to the main body rotating, one end of the telescopic assembly is connected with the rotating plate, the other end of the telescopic assembly is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the clamping jaw assembly;

When the jaw assembly is pulled away from the traction module, the telescopic assembly pulls the rotating plate to rotate, so that the jaw assembly extends relative to the main body.
The clamping device according to claim 2, wherein the telescopic assembly includes a first telescopic assembly and a second telescopic assembly, and the connecting rod includes a first connecting rod and a second connecting rod;

One of the clamping jaw assemblies, the first connecting rod and the first telescopic assembly is connected in sequence, and the other clamping jaw assembly, the second connecting rod and the second telescopic assembly are connected in sequence.
The clamping device according to claim 2, wherein the telescopic assembly comprises a cylinder, an elastic member and a telescopic rod, the cylinder is connected to the rotating plate, and the elastic member is sleeved on the telescopic Outside the rod, the telescopic rod is accommodated in the cylinder, and one end of the telescopic rod extends out of the cylinder and is connected with the connecting rod, and one end of the elastic member is in contact with one end of the telescopic rod , the other end of the elastic piece is in contact with the inner wall of the cylinder.
The clamping device according to claim 2, wherein the traction module further comprises a reset piece, one end of the reset piece is fixedly mounted on the main body, and the other end of the reset piece is connected to the connecting rod , the reset member is used to generate a pulling force on the jaw assembly through the connecting rod.
The clamping device according to claim 5, wherein the reset member is a tension spring.
The clamping device according to claim 5, wherein the pulling module further comprises a pull-back member, one end of the pull-back member is fixedly installed on the main body, and the other end of the pull-back member is connected to the Rotary plate connection;

When the clamping jaw assembly is forced away from the traction module, the telescopic assembly pulls the rotating plate to rotate in a first direction, and the rotating plate stretches the pull-back member, and when the clamping jaw assembly is released , the retracting member resets and pulls the rotating plate to rotate along a second direction to drive the telescopic assembly to move, wherein the first direction is opposite to the second direction.
The clamping device according to claim 2, wherein the traction module further comprises a guide member, the guide member is fixedly mounted on the main body, and the guide member is used to guide the connecting rod to extend or extend in a direction. The body is retracted.
The clamping device according to claim 8, wherein the guide member is provided with a guide hole, and one end of the connecting rod passes through the guide hole and is connected to the clamping claw assembly. When the jaw assembly moves away from the main body, the connecting rod moves along the guide hole.
The clamping device according to any one of claims 2-9, further comprising a locking module, the locking module is mounted on the main body, and the locking module is used for locking the traction module , so that the jaw assembly grips the tire.
The clamping device according to claim 10, wherein the locking module comprises a serrated bar, a pawl assembly, a swing rod and a handle, the serrated bar is mounted on the rotating plate, and one end of the swing rod connected with the ratchet assembly, the other end of the swing rod is rotatably connected to the main body, the ratchet assembly is connected to the handle, and one end of the handle is rotatably mounted on the body;

When the handle is rotated, the pawl assembly moves with the handle, and when the pawl assembly engages the sawtooth bar, the rotating plate is in a locked state, when the pawl assembly and the When the sawtooth strips are separated, the rotating plate is in an unlocked state.
The clamping device according to claim 11, wherein the sawtooth strip and the rotating plate are integrally formed.
The clamping device according to claim 11, wherein the pawl assembly comprises a link block and a pawl, one end of the link block is connected to the handle, and the other end of the link block is connected to the handle. The pawl is connected to one end of the swing rod, and the other end of the pawl is used for hooking the sawtooth bar.
The clamping device according to claim 13, wherein the main body is provided with a lifting block;

The locking module further includes a torsion spring, which is installed on the connecting rod block, and one end of the torsion spring is in contact with the connecting rod block, and the other end is in contact with the pawl, so the torsion spring is in contact with the connecting rod block. the torsion spring is used for providing the pressure towards the sawtooth bar to the pawl;

When the pawl moves in the direction of the lifting block, so that the lifting block is inserted between the pawl and the sawtooth bar and separates the pawl and the sawtooth bar, the rotating plate is in an unlocked state, and when all the When the pawl moves away from the lifting block, so that the pawl and the sawtooth bar are no longer separated by the lifting block, under the action of the torsion spring, the pawl moves toward the sawtooth bar move, and engage the saw tooth bar, so that the rotating plate is in a locked state.
The clamping device according to claim 11, wherein the locking module further comprises a limit block, one end of the limit block is rotatably connected to the main body, and the other end of the limit block is connected to the main body. The handle is rotated to connect.
The clamping device according to claim 1, wherein the clamping claw assembly comprises a connecting arm and a clamping claw, one end of the connecting arm is rotatably mounted on the main body, and the other end of the connecting arm is connected to the main body. The clamping jaws are movably connected, and the connecting arm is connected with the traction module.