Anti-stuck sleeve wrench and robot

Abstract

The present application belongs to wrench manufacturing technical field, provide a kind of anti-jamming socket wrench robot, its scheme is: socket body, the movable top axle and multiple claw components are arranged in the socket body;The movable top axle reset spring is arranged at the bottom of the movable top axle, and the movable top axle reset spring can reciprocate with the back and forth movement of movable top axle;Each claw component includes claw, rolling bearing and pivot, the rolling bearing is fixed on the claw by pivot, the taper surface of movable top axle is in contact with rolling bearing, by the interaction of rolling bearing and taper surface, rolling bearing is driven to move synchronously up and down to realize the clamping and release of claw component.The present application adopts cam mechanism of slope + roller, not easy to be locked or jammed due to excessive reaction force, and can also withstand large slope pressure, so that the phenomenon of socket jamming can be effectively avoided under the action of large torque.

Description

Technical Field

[0001] This invention belongs to the field of wrench manufacturing technology, and particularly relates to a socket wrench and robot that prevents jamming. Background Technology

[0002] Existing socket wrenches are mainly divided into three structural types: fixed, adjustable, and universal. Fixed sockets have hexagonal grooves of varying sizes inside, and the socket itself is a single, integral component. Adjustable sockets use radially retractable jaws instead of the sides of the hexagonal grooves on fixed sockets; the size of the hexagonal grooves is adjusted by regulating the extension of the jaws, making them suitable for various sizes of fixed sockets. Universal sockets use an internal spring-loaded pin to secure the bolt head or the tightening part of the workpiece, further enhancing their versatility and broadening their application range.

[0003] The inventors discovered that fixed, adjustable, and universal socket wrenches all have the problem that if the tightening torque is too high, the socket will get stuck and cannot be removed from the tightened part. However, if the socket is removed by reversing it at an appropriate angle, the tightening torque will be reduced or the tightening will not be complete. Summary of the Invention

[0004] To address at least one of the technical problems in the background art, the first aspect of the present invention provides an anti-jamming socket wrench, which uses movable jaws instead of the sides of the internal hexagonal groove. Depending on the needs of the work object, it can adopt a four-jaw or six-jaw structure. The jaw adjustment adopts a cam-like mechanism of inclined plane + roller. The mechanism of the present invention is not prone to self-locking or jamming due to excessive reaction force, and can also withstand large inclined plane pressure. In this way, the phenomenon of socket jamming can be effectively avoided under large torque.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The first aspect of the present invention provides a socket wrench that prevents jamming, comprising: a socket body, wherein a movable top shaft and a plurality of claw assemblies are disposed within the socket body;

[0007] A movable top shaft return spring is provided at the bottom of the movable top shaft, and the movable top shaft return spring can reciprocate and extend as the movable top shaft moves back and forth.

[0008] Each jaw assembly includes a jaw, a rolling bearing, and a rotating shaft. The rolling bearing is fixed to the jaw via the rotating shaft. The tapered surface of the movable top shaft contacts the rolling bearing. Through the interaction between the rolling bearing and the tapered surface, the rolling bearing moves up and down synchronously to achieve the clamping and releasing of the jaw assembly.

[0009] In one embodiment, a fixed sleeve is also provided inside the sleeve body. The fixed sleeve is used to fix the movable top shaft, and the central axis of the movable top shaft and the central axis of the fixed sleeve are on the same straight line.

[0010] In one embodiment, the sleeve body includes an integral first columnar structure, a second columnar structure, a groove structure, and a third columnar structure. The first columnar structure and the second columnar structure have a through-hole inside. The groove structure and the third columnar structure have a through-hole inside. The first cavity and the second cavity are connected.

[0011] In one embodiment, the movable top shaft extends through the first cavity and the second cavity, with the second cavity containing multiple claw assemblies.

[0012] In one embodiment, the sleeve body is provided with multiple movable limiting holes and multiple threaded holes, and the plane of the movable limiting hole corresponding to each claw assembly is perpendicular to the plane of the threaded hole.

[0013] In one implementation, each jaw assembly is also provided with a movable limiting pin, which is fixed on the jaw. The movable limiting pin moves up and down along the corresponding movable limiting hole so that the angle deflection of the jaw assembly caused by the forward and backward movement of the movable top shaft always revolves around the midpoint of the line connecting the centers of the movable limiting pin shaft.

[0014] In one embodiment, the wrench further includes a spring screw and a spring clamping plate. One end of the spring screw is connected to the sleeve body through a threaded hole, and the other end is pressed onto the sleeve body by the spring clamping plate.

[0015] In one embodiment, the wrench further includes a jaw return spring, which is sleeved on the spring screw. When the jaw assembly is working, the jaw return spring is in a stretched state, and when the movable top shaft moves forward, it can pull the jaw assembly back to its initial state.

[0016] In one implementation, the jaw assembly adopts a four-jaw or six-jaw structure.

[0017] In one embodiment, the movable top shaft and the movable top shaft return spring are brought together by contact, and after the return spring is compressed, it is brought together with the movable top shaft by the elastic force of restoring its elastic deformation.

[0018] The second aspect of this invention provides a robot comprising the anti-jamming socket wrench described in the first aspect. It uses movable jaws instead of the sides of the internal hexagonal groove, and can adopt a four-jaw or six-jaw structure depending on the requirements of the work object. The jaw adjustment employs a cam-like mechanism of inclined plane and rollers. The mechanism of this invention is less prone to self-locking or jamming due to excessive reaction force, and can also withstand greater inclined plane pressure. Thus, under high torque, it can effectively prevent the socket from jamming.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention innovatively proposes an anti-jamming socket wrench, which uses movable jaws instead of the sides of the internal hexagonal groove. Through the rolling contact between the inclined surface of the movable top shaft and the rolling bearing of the jaw, and the interaction between the rolling bearing and the inclined conical surface, the rolling bearing moves up and down synchronously to achieve the clamping and loosening of the jaw assembly. This solves the problem of excessive tightening torque in existing wrenches, which can cause the socket to jam and become unable to disengage from the tightened part. It allows for adjustment according to the needs of the work object, and can withstand greater inclined surface pressure, reducing the occurrence of self-locking or jamming of the socket due to excessive reaction force. At the same time, it can effectively prevent the socket from jamming under high torque, thus improving its applicability and scope of application.

[0021] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1 This is an internal structure diagram of the anti-jamming socket wrench provided in an embodiment of the present invention;

[0024] Figure 2 This is a first-view schematic diagram of the sleeve body provided in an embodiment of the present invention;

[0025] Figure 3 This is a second-view schematic diagram of the sleeve body provided in an embodiment of the present invention;

[0026] Figure 4 This is a structural diagram of the claw assembly provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall structure of the movable top shaft provided in an embodiment of the present invention;

[0028] Figure 6This is a left view of the anti-jamming socket wrench provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the working process of the anti-jamming socket wrench clamping the workpiece provided in the embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the working process of the anti-jamming socket wrench for loosening a workpiece, provided in an embodiment of the present invention.

[0031] Among them, 1-claw assembly, 101-claw, 102-movable limiting pin, 103-rolling bearing, 104-rotating shaft, 2-spring screw, 3-spring clamping plate, 4-sleeve body, 401-first columnar structure, 402-second columnar structure, 403-groove structure, 4031-movable limiting hole, 4032-threaded hole, 404-third columnar structure, 5-fixed sleeve, 6-movable top shaft return spring, 7-movable top shaft, 8-claw return spring, 9-workpiece. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] In this invention, terms such as "upper," "lower," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0036] In this invention, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0037] The fixed, adjustable, and universal socket wrenches mentioned in the background of this application all have the problem that if the tightening torque is too large, the socket will get stuck and cannot be removed from the tightened part. Furthermore, if the socket is removed by reversing it at an appropriate angle, the tightening torque will be reduced or the tightening will not be complete.

[0038] To address the aforementioned issues, this invention employs movable chucks instead of the sides of the internal hexagonal grooves. The adjustment of the chucks utilizes a cam-like mechanism consisting of an inclined plane and rollers. This mechanism is less prone to self-locking or jamming due to excessive reaction force, while also withstanding significant inclined plane pressure. This effectively prevents the sleeve from jamming under high torque.

[0039] On the one hand, such as Figure 1 As shown, this embodiment provides an anti-jamming socket wrench, including: a claw assembly 1, a spring screw 2, a spring clamping plate 3, a socket body 4, a fixed sleeve 5, a movable top shaft return spring 6, a movable top shaft 7, and a claw return spring 8.

[0040] The sleeve body 4 is provided with a fixed sleeve 5 and multiple claw assemblies 1;

[0041] like Figures 2-3 As shown in the specific embodiment, the sleeve body 4 includes an integral first columnar structure 401, a second columnar structure 402, a groove structure 403, and a third columnar structure 404. The first columnar structure 401 and the second columnar structure 402 are provided with a through first cavity; the groove structure 403 and the third columnar structure 404 are provided with a through second cavity. The first cavity and the second cavity are connected. A fixed sleeve 5 is provided in the first cavity, and the second cavity accommodates multiple claw assemblies 1.

[0042] The movable top shaft 7 passes through the first cavity and the second cavity, and the second cavity contains multiple claw assemblies 1.

[0043] The movable top shaft 7 passes through the first cavity and the second cavity and is fixed to the fixed sleeve 5. The movable top shaft 7 is equipped with a movable top shaft return spring 6 at its bottom. The movable top shaft return spring 6 can reciprocate and extend as the movable top shaft 7 moves back and forth. After being compressed, the return spring can be kept in contact with the movable top shaft 7 by restoring its elastic deformation.

[0044] The fixed sleeve 5 has a fixed movable top shaft 7, and a movable top shaft return spring 6 is installed at the bottom of the movable top shaft 7; the movable top shaft return spring 6 can reciprocate and extend as the movable top shaft 7 moves back and forth.

[0045] The fixed sleeve 5 serves as a guide and support for the movable top shaft 7, ensuring that the central axis of the movable top shaft 7 and the central axis of the fixed sleeve 5 are on the same straight line.

[0046] Figure 4 The component structure diagram is shown. Figure 5 A schematic diagram of the structure of the movable top shaft 7 is shown. The claw assembly 1 includes a claw 101, a movable limiting pin 102, a rolling bearing 103, and a rotating shaft 104.

[0047] The rolling bearing 103 is fixed to the jaw 101 by the rotating shaft 104. The tapered inclined surface of the movable top shaft 7 is in contact with the rolling bearing 103 of the jaw assembly 1. The rolling bearing 103 can roll along the tapered surface. Through the interaction between the rolling bearing 103 and the tapered inclined surface of the movable top shaft 7, the end of the rolling bearing 203 of the jaw assembly 1 moves up and down synchronously to realize the clamping and loosening of the jaw assembly 1.

[0048] The groove structure 403 is provided with multiple movable limiting holes 4031 and multiple threaded holes 4032, and the plane where the movable limiting hole of each claw assembly is located is perpendicular to the plane where the threaded hole is located.

[0049] Furthermore, the movable limiting pin 102 is fixed on the chuck 101 and cannot move relative to the chuck 101. The movable limiting pin 102 can move up and down along the movable limiting hole 4031 on the sleeve body 4, which can ensure that the angle deflection of the chuck assembly 1 caused by the forward and backward movement of the movable top shaft 7 always revolves around the midpoint of the line connecting the centers of the two movable limiting pins 12.

[0050] It should be noted that, in this embodiment, the number of the jaw components 1 can be set according to the needs of the work object, for example, a four-jaw or six-jaw structure can be adopted.

[0051] like Figure 3 and Figure 6 As shown, the sleeve body 4 groove structure 403 is also provided with a plurality of threaded holes 4032. One end of the spring screw 2 is connected to the sleeve body 4 through the threaded hole 4032, and the other end is pressed tightly onto the sleeve body 4 by the spring clamping plate 3.

[0052] The claw return spring 8 is sleeved on the spring screw 2, which serves to limit the claw return spring 8.

[0053] When the claw assembly 1 is working, the claw return spring 8 is in a stretched state, which can provide the restoring force of the claw assembly 1. When the movable top shaft 7 moves forward, it can pull the claw assembly 1 back to the initial state.

[0054] like Figures 7-8 As shown, the working principle of this invention is as follows:

[0055] The movable top shaft 7 of the socket wrench first contacts the workpiece 9 to be tightened. After contact, the movable top shaft 7 moves backward and compresses the movable top shaft return spring 6. During the backward movement, the inclined conical surface on the movable top shaft 7 pushes the rolling bearing 13 end of the chuck assembly 1 upward, and the chuck movable limit pin 12 begins to move in the pin hole 41 of the socket body, ultimately causing multiple chucks to clamp and tighten the workpiece synchronously.

[0056] During the subsequent tightening process, a positive pressure must be maintained along the sleeve axis.

[0057] After the socket wrench has finished tightening, pull the socket back slightly. The movable top shaft 7 will then move forward under the action of the movable top shaft return spring 6, and the clamping force between the chuck and the workpiece will be released. If the socket continues to pull back, the chuck will continue to loosen and completely disengage from the tightened workpiece, preventing the socket from jamming.

[0058] On the other hand, this embodiment provides a robot, including the aforementioned anti-jamming socket wrench, with the same structure as described above, specifically including:

[0059] A sleeve body, wherein a movable top shaft and multiple jaw assemblies are disposed within the sleeve body;

[0060] A movable top shaft return spring is provided at the bottom of the movable top shaft, and the movable top shaft return spring can reciprocate and extend as the movable top shaft moves back and forth.

[0061] Each jaw assembly includes a jaw, a rolling bearing, and a rotating shaft. The rolling bearing is fixed to the jaw via the rotating shaft. The tapered surface of the movable top shaft contacts the rolling bearing. Through the interaction between the rolling bearing and the tapered surface, the rolling bearing moves up and down synchronously to achieve the clamping and releasing of the jaw assembly.

[0062] The sleeve body is also provided with a fixed sleeve, which is used to fix the movable top shaft. The central axis of the movable top shaft and the central axis of the fixed sleeve are on the same straight line.

[0063] The sleeve body includes an integral first columnar structure, a second columnar structure, a groove structure, and a third columnar structure. The first columnar structure and the second columnar structure have a through first cavity inside. The groove structure and the third columnar structure have a through second cavity inside. The first cavity and the second cavity are connected.

[0064] The movable top shaft passes through the first cavity and the second cavity, and the second cavity contains multiple claw assemblies.

[0065] The sleeve body is provided with multiple movable limiting holes and multiple threaded holes, and the plane where the movable limiting hole of each claw assembly is located is perpendicular to the plane where the threaded hole is located.

[0066] Each jaw assembly is also provided with a movable limiting pin, which is fixed on the jaw. The movable limiting pin moves up and down along the corresponding movable limiting hole so that the angle deflection of the jaw assembly caused by the forward and backward movement of the movable top shaft always revolves around the midpoint of the line connecting the centers of the movable limiting pin shaft.

[0067] The wrench also includes a spring screw and a spring clamping plate. One end of the spring screw is connected to the sleeve body through a threaded hole, and the other end is pressed onto the sleeve body by the spring clamping plate.

[0068] The wrench also includes a pawl return spring, which is sleeved on the spring screw. When the pawl assembly is working, the pawl return spring is in a stretched state. When the movable top shaft moves forward, it can pull the pawl assembly back to its initial state.

[0069] The jaw assembly adopts a four-jaw or six-jaw structure.

[0070] The movable top shaft and the movable top shaft return spring are brought together by contact. After the return spring is compressed, it is pressed together with the movable top shaft by the elastic force of restoring its elastic deformation.

[0071] The advantage of the above technical solution lies in the fact that the present invention uses movable jaws instead of the sides of the internal hexagonal groove, and the adjustment of the jaws adopts a cam-like mechanism of inclined plane + roller. This mechanism is not prone to self-locking or jamming due to excessive reaction force, and can also withstand large inclined plane pressure, thus effectively preventing the sleeve from jamming under large torque.

[0072] The working principle of this invention is as follows:

[0073] The movable top shaft of the socket wrench first contacts the workpiece to be tightened. After contact, the movable top shaft moves backward and compresses the movable top shaft return spring. During the backward movement, the inclined conical surface on the movable top shaft pushes the rolling bearing end of the chuck assembly upward, and the movable limit pin of the chuck begins to move in the pin hole of the socket body, ultimately causing multiple chucks to clamp and tighten the workpiece synchronously.

[0074] During the subsequent tightening process, a positive pressure must be maintained along the sleeve axis.

[0075] After the socket wrench has finished tightening, pull the socket back slightly. The movable top shaft will then move forward under the action of the movable top shaft return spring, and the clamping force between the chuck and the workpiece will be released. If the socket continues to pull back, the chuck will continue to loosen and completely disengage from the tightened workpiece, preventing the socket from jamming.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A socket wrench designed to prevent jamming, characterized in that, include: A sleeve body, wherein a movable top shaft and multiple jaw assemblies are disposed within the sleeve body; A movable top shaft return spring is provided at the bottom of the movable top shaft, and the movable top shaft return spring can reciprocate and extend as the movable top shaft moves back and forth. Each jaw assembly includes a jaw, a rolling bearing, and a rotating shaft. The rolling bearing is fixed to the jaw via the rotating shaft. The tapered surface of the movable top shaft contacts the rolling bearing. Through the interaction between the rolling bearing and the tapered surface, the rolling bearing moves up and down synchronously to achieve the clamping and releasing of the jaw assembly. The sleeve body is provided with multiple movable limiting holes and multiple threaded holes; Each claw assembly is also provided with two movable limiting pins. The movable limiting pins are fixed on the claw and move up and down along the corresponding movable limiting hole so that the angle deflection of the claw assembly caused by the forward and backward movement of the movable top shaft always revolves around the midpoint of the line connecting the centers of the movable limiting pin shafts. The plane of the movable limiting hole corresponding to each claw assembly is perpendicular to the plane of the threaded hole. The wrench also includes a spring screw and a spring clamping plate. One end of the spring screw is connected to the sleeve body through the threaded hole, and the other end is pressed onto the sleeve body through the spring clamping plate.

2. The anti-jamming socket wrench as described in claim 1, characterized in that, The sleeve body is also provided with a fixed sleeve, which is used to fix the movable top shaft. The central axis of the movable top shaft and the central axis of the fixed sleeve are on the same straight line.

3. The anti-jamming socket wrench as described in claim 1, characterized in that, The sleeve body includes an integral first columnar structure, a second columnar structure, a groove structure, and a third columnar structure. The first columnar structure and the second columnar structure have a through first cavity inside. The groove structure and the third columnar structure have a through second cavity inside. The first cavity and the second cavity are connected.

4. A socket wrench for preventing jamming as described in claim 3, characterized in that, The movable top shaft passes through the first cavity and the second cavity, and the second cavity contains multiple claw assemblies.

5. A socket wrench for preventing jamming as described in claim 1, characterized in that, The wrench also includes a pawl return spring, which is sleeved on the spring screw. When the pawl assembly is working, the pawl return spring is in a stretched state. When the movable top shaft moves forward, it pulls the pawl assembly back to its initial state.

6. A socket wrench for preventing jamming as described in claim 1, characterized in that, The jaw assembly adopts a four-jaw or six-jaw structure.

7. A socket wrench for preventing jamming as described in claim 1, characterized in that, The movable top shaft and the movable top shaft return spring are brought together by contact. After the return spring is compressed, it is pressed together with the movable top shaft by the elastic force of restoring its elastic deformation.

8. A robot, characterized in that, Includes the anti-jamming socket wrench as described in any one of claims 1-7.

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