Locking piece and locking mechanism

Abstract

The utility model discloses a locking piece and a locking mechanism, the locking piece comprises a body, a first limiting structure and a second limiting structure, the body is provided with a connecting hole and an arc-shaped hole, the arc-shaped hole takes the center of the connecting hole as the arc center, the connecting hole is used for being in butt joint with a connecting piece, and the limiting piece is used for being in butt joint with the arc-shaped hole; the first limiting structure is arranged at the connecting hole and used for limiting relative rotation of the connecting hole and the connecting piece. And the second limiting structure is arranged at the arc-shaped hole, so that a plurality of mounting positions distributed in the arc direction are arranged in the arc-shaped hole, and the mounting positions are matched with the limiting pieces and used for limiting the limiting pieces to slide in the arc-shaped hole in the arc direction. The connecting piece is limited by the first limiting structure, relative rotation between the connecting piece and the connecting hole cannot occur, rotation of the connecting piece relative to the workpiece is limited by the locking piece and the limiting piece, and the locking piece plays a role in locking and looseness prevention.

Description

Technical Field

[0001] The present application relates to the field of anti-loosening of threaded connections, and in particular to a locking member and a locking mechanism. Background Art

[0002] Threaded connection is a widely used detachable fixed connection, which refers to a detachable connection that uses a threaded part or the threaded part of the connected part to connect the connected parts into one. Commonly used threaded connectors include bolts, studs, screws and set screws, most of which are standard parts. They have the advantages of simple structure, reliable connection, and easy assembly and disassembly. Of course, there are also some non-standard parts such as threaded joints and threaded pipes. These threaded connectors are installed in the equipment, and the vibration inside or outside the equipment often causes the threaded connectors to rotate and loosen. Utility Model Content

[0003] The present application provides a locking member and a locking mechanism, which can be used to lock and prevent loosening of threaded connectors.

[0004] The present application proposes a locking member for locking a connecting member on a workpiece, wherein the workpiece is further provided with a limiting member located on one side of the connecting member, and the locking member comprises:

[0005] A body, wherein a connecting hole and an arc-shaped hole are provided on the body, wherein the arc-shaped hole has the center of the connecting hole as the arc center, the connecting hole is used to dock with the connecting member, and the limiting member is used to dock with the arc-shaped hole;

[0006] A first limiting structure, provided at the connecting hole, for limiting the relative rotation between the connecting hole and the connecting member;

[0007] The second limiting structure is arranged at the arc-shaped hole, so that the arc-shaped hole has a plurality of installation positions arranged along the arc direction, and the installation positions are adapted to the limiting member to limit the sliding of the limiting member along the arc direction in the arc-shaped hole.

[0008] In some embodiments, the first limiting structure includes a limiting plane arranged on the inner wall of the connecting hole.

[0009] In some embodiments, the first limiting structure further includes a limiting protrusion or a limiting groove provided on the inner wall of the connecting hole.

[0010] In some embodiments, the second limiting structure includes a plurality of first protrusions arranged along an arc direction, wherein the first protrusions are arranged on an inner wall of one side of the arc-shaped hole, and an area between two adjacent first protrusions is configured as the installation position.

[0011] In some embodiments, the second limiting structure includes a plurality of second protrusions arranged along the arc direction, the second protrusions are arranged on the inner wall of the arc-shaped hole on the side away from the first protrusion, and the area between two adjacent first protrusions and two second protrusions spaced apart from the first protrusion constitute the installation position.

[0012] In some embodiments, the body is arranged in a fan shape, the connecting hole is arranged close to the vertex of the fan shape, and the arc hole is arranged close to the arc edge of the fan shape.

[0013] In some embodiments, a plurality of rows of arc-shaped holes are arranged at intervals on the main body, and the arcs are arranged along the radial direction of the connecting holes.

[0014] The present application also proposes a locking mechanism, including the above-mentioned locking member, the locking mechanism also includes a workpiece, the workpiece is provided with a connecting member and a limiting member located on one side of the connecting member, the connecting member is docked with the connecting hole, and the arc hole is docked with the limiting member.

[0015] In some embodiments, the limiting member is arranged in a rod shape, and the cross-sectional shape of the limiting member includes a circle, a regular polygon and an irregular shape.

[0016] In some embodiments, the connector includes a docking portion for docking with the connecting hole, and a cross-sectional shape of the docking portion is the same as a shape of the connecting hole.

[0017] The locking member in the present application includes a body, a first limiting structure and a second limiting structure. The body is provided with a connecting hole and an arc-shaped hole. The arc-shaped hole takes the center of the connecting hole as the arc center. The connecting hole is used to dock with the connecting member, and the limiting member is used to dock with the arc-shaped hole. The first limiting structure is provided at the connecting hole to limit the relative rotation between the connecting hole and the connecting member. The second limiting structure is provided at the arc-shaped hole so that the arc-shaped hole has a plurality of mounting positions arranged along the arc direction. The mounting positions are adapted to the limiting member to limit the sliding of the limiting member in the arc-shaped hole along the arc direction. The connecting member is restricted by the first limiting structure and cannot rotate relative to the connecting hole. The rotation of the connecting member relative to the workpiece is also restricted by the locking member and the limiting member. The locking member plays a role in locking and preventing loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a locking mechanism in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic structural diagram of a locking member in an embodiment;

[0020] Figure 3 for Figure 2 A schematic structural diagram of a locking member in an embodiment.

[0021] Description of labels:

[0022] 1. Locking piece; 10. Main body; 11. Connecting hole; 12. Arc hole; 13. Limiting plane; 14. First protrusion; 15. Second protrusion; 2. Workpiece; 3. Connecting piece; 31. Docking part; 4. Limiting piece.

[0023] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the scheme in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0026] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] The present application proposes a locking member 1, referring to Figures 1 to 3The locking member 1 is used to lock the connecting member 3 on the workpiece 2. The workpiece 2 is provided with a limiting member 4 located on one side of the connecting member 3. The locking member 1 includes: a main body 10. The main body 10 is provided with a connecting hole 11 and an arc hole 12. The arc hole 12 takes the center of the connecting hole 11 as the arc center. The connecting hole 11 is used to dock with the connecting member 3, and the limiting member 4 is used to dock with the arc hole 12; a first limiting structure is provided at the connecting hole 11, and is used to limit the relative rotation of the connecting hole 11 and the connecting member 3; a second limiting structure is provided at the arc hole 12, so that the arc hole 12 has a plurality of mounting positions arranged along the arc direction, and the mounting positions are adapted to the limiting member 4, and are used to limit the sliding of the limiting member 4 in the arc hole 12 along the arc direction. In this embodiment, the connecting member 3 can be a screw, bolt, nut or connector threadedly connected to the workpiece 2, and the locking member 1 is sleeved on the connecting member 3 through the connecting hole 11. The first limiting structure enables the locking member 1 to move along the axis of the connecting member 3, but cannot rotate around the connecting member 3. When the connecting member 3 is connected to the connecting hole 11, the limiting member 4 enters the arc hole 12 synchronously, and the limiting member 4 is restricted by the second limiting structure and fixed in the installation position. Even if the installation member is impacted or vibrated by external force, it will not rotate due to the restriction of the locking member 1 and the limiting member 4, and the locking member 1 plays a role in preventing loosening.

[0029] Further, the first limiting structure includes a limiting plane 13 provided on the inner wall of the connecting hole 11. The section of the connecting member 3 located outside the workpiece 2 can be used to dock with the connecting hole 11. One side or two opposite sides of the section can be a plane, and the plane abuts against the limiting plane 13 for circumferential limiting. The section can be a structure formed by milling a portion along the axial direction on the basis of a cylinder to form the above-mentioned plane, and the cross section of the section and the limiting hole can be D-shaped or horseshoe-shaped. Of course, the first limiting structure can also be composed of a plurality of limiting planes 13, and the limiting hole can be constructed as an equilateral triangle hole, a regular quadrilateral hole, a regular hexagonal hole, etc., to present a regular geometric shape. Correspondingly, the cross section of the section of the connecting member 3 docking with the connecting hole 11 can be a regular geometric shape such as an equilateral triangle, a regular quadrilateral, a regular hexagon, etc., and of course the shape of the connecting hole 11 can also be a special shape. The cross-sectional shape of the docking portion 31 is the same as the shape of the connecting hole 11, or it can be a special shape. When the connecting member 3 is a bolt or a nut, the bolt head or the nut is mostly a regular hexagonal structure, and the connecting hole 11 adopts a regular hexagonal hole type, which has a wider application range. In addition, the arc center angle of the arc hole 12 is 20° to 120°. When the connecting hole 11 adopts a hexagonal hole, the arc center angle of the arc hole 12 can be set to 90°. By adjusting the posture of the locking member 1 when docking with the connecting member 3, the limit member 4 can always dock with the arc hole 12.

[0030] In addition, the first limiting structure also includes a limiting protrusion or a limiting groove provided on the inner wall of the connecting hole 11. This limiting structure is a non-standard structure. Specifically, a limiting protrusion can be provided on the outer wall of the connecting member 3, and a limiting groove matching the limiting protrusion can be provided on the inner wall of the connecting hole 11. Of course, a limiting protrusion can also be provided on the inner wall of the connecting hole 11, and a limiting groove matching it can be provided on the outer wall of the connecting member 3.

[0031] In some embodiments, reference Figures 1 to 3 , the second limiting structure includes a plurality of first protrusions 14 arranged along the arc direction, the first protrusion 14 is arranged on the inner wall of one side of the arc-shaped hole 12, and the area between two adjacent first protrusions 14 is configured as a mounting position. In this embodiment, the limiting member 4 can be arranged in a triangular prism, wherein one side wall is arranged in an arc shape adapted to one side wall of the arc-shaped hole 12, and the ridge away from the side wall can be clamped between two adjacent first protrusions 14. The side wall of the arc-shaped hole 12 close to the connecting hole 11 is the inner side wall, and the side wall away from the connecting hole 11 is the outer side wall. When the first protrusion 14 is arranged on the inner side wall, the arc surface of the limiting member 4 is an outer convex arc surface. When the first protrusion 14 is arranged on the outer side wall, the arc surface of the limiting member 4 is an inner concave arc surface.

[0032] In addition, the second limiting structure includes a plurality of second protrusions 15 arranged along the arc direction. The second protrusions 15 are arranged on the inner wall of the arc hole 12 away from the first protrusions 14. The two adjacent first protrusions 14 and the area between the two second protrusions 15 spaced apart from the first protrusions 14 form a mounting position. In this embodiment, in order to further enhance the limiting strength of the second limiting structure on the limiting member 4, the first protrusion 14 may be arranged on the inner wall, and the second protrusion 15 may be arranged on the second side wall. The limiting member 4 is arranged in the mounting position formed by the two adjacent first protrusions 14 and the two second protrusions 15. The cross-section of the limiting member 4 may be a regular polygon or a circle. Figure 2 and Figure 3 The cross section of the limiter 4 is circular, and the inner and outer walls of the corresponding arc-shaped hole 12 are constructed into a sawtooth structure, and the tooth tops of the sawtooth on the two side walls correspond one to one. The arc-shaped hole 12 can be regarded as a plurality of circular mounting positions (mounting holes) formed by overlapping one another along the arc. The center distance between two adjacent mounting positions must be greater than 1 / 3R of the mounting position (R represents the radius of the mounting hole), and the tooth top distance between two adjacent first protrusions 14 is smaller than the cross-sectional diameter of the limiter 4. The sawtooth arrangement structure of the above-mentioned first protrusions 14 and / or second protrusions 15 facilitates the rotation fine-tuning of the mounting position so that the limiter 4 is clamped in the mounting position.

[0033] In some embodiments, reference Figures 1 to 3The body 10 is arranged in a fan shape, the connecting hole 11 is arranged near the vertex of the fan shape, and the arc hole 12 is arranged near the arc edge of the fan shape. The body 10 is arranged in a fan shape to achieve the effect of reducing weight, and the area of ​​the body 10 near the arc center and the two ends of the outer arc surface of the body 10 can be chamfered to avoid the protruding part of the body 10 from interfering with other parts on the workpiece 2, and at the same time, it can also prevent the user from being stabbed by the protruding sharp corners during operation.

[0034] The above embodiment is based on a structure in which one arc-shaped hole 12 is configured for one connecting hole 11. Of course, a structure in which multiple arc-shaped holes 12 are configured for one hole 11 and another hole 12 can also be adopted. Specifically, multiple rows of arc-shaped holes 12 can be arranged at intervals on the body 10, and the arcs are arranged along the radial direction of the connecting hole 11. When there are multiple options for the distance between the stopper 4 and the connecting member 3, multiple rows of arc-shaped holes 12 can be provided to adapt to the stopper 4 in different distance states.

[0035] The present application also proposes a locking mechanism, referring to Figures 1 to 3 The locking mechanism includes the above-mentioned locking member 1, and the locking mechanism also includes a workpiece 2. The workpiece 2 is provided with a connecting member 3 and a limiting member 4 located on one side of the connecting member 3. The connecting member 3 is connected to the connecting hole 11, and the arc-shaped hole 12 is connected to the limiting member 4. In this embodiment, the connecting member 3 can be a screw, a bolt, a nut or a connector threadedly connected to the workpiece 2. The locking member 1 is sleeved on the connecting member 3 through the connecting hole 11. The first limiting structure enables the locking member 1 to move along the axis of the connecting member 3, but cannot rotate around the connecting member 3. When the connecting member 3 is connected to the connecting hole 11, the limiting member 4 synchronously enters the arc-shaped hole 12, and the limiting member 4 is limited by the second limiting structure and fixed in the installation position. Even if the installation member is impacted or vibrated by external force, it will not rotate due to the limitation of the locking member 1 and the limiting member 4. The locking member 1 plays a role in preventing loosening.

[0036] Further, the connector 3 includes a docking portion 31 for docking with the connecting hole 11, and the cross-sectional shape of the docking portion 31 is the same as the shape of the connecting hole 11. The docking portion 31 of this embodiment is the section where the above-mentioned connector 3 and the connecting hole 11 are adapted. One side or two opposite sides of the docking portion 31 can be a plane, and the plane abuts against the limiting plane 13 to perform circumferential limiting. The docking portion 31 can be a structure in which a portion is milled away along the axial direction on the basis of a cylinder to form the above-mentioned plane, and the cross-section of the docking portion 31 and the limiting hole can be D-shaped or horseshoe-shaped. Of course, the first limiting structure can also be composed of a plurality of limiting planes 13, and the limiting hole can be constructed as an equilateral triangle hole, a regular quadrilateral hole, a regular hexagonal hole, etc., to present a regular geometric shape. Correspondingly, the cross-section of the section of the connector 3 that docks with the connecting hole 11 can be a regular geometric shape such as an equilateral triangle, a regular quadrilateral, a regular hexagon, etc., and of course the shape of the connecting hole 11 can also be a special shape. The cross-sectional shape of the docking portion 31 is the same as that of the connecting hole 11, and can also be a special shape. When the connecting member 3 is a bolt and nut, its cross-section is mostly a regular hexagonal structure. The connecting hole 11 adopts a regular hexagonal hole shape, which has a wider range of application. In addition, the arc center angle of the arc hole 12 is 20° to 120°. When the connecting hole 11 adopts a hexagonal hole, the arc center angle of the arc hole 12 can be set to 90°. By adjusting the posture of the locking member 1 when docking with the connecting member 3, the limit member 4 can always dock with the arc hole 12.

[0037] In some embodiments, the stopper 4 is rod-shaped, and the cross-sectional shape of the stopper 4 includes a circle, a regular polygon, and an irregular shape. The cross-sectional shape of the stopper 4 can be a regular polygon or a circle. Figure 2 and Figure 3 The cross section of the limiter 4 is circular, and the inner and outer walls of the corresponding arc-shaped hole 12 are constructed into a sawtooth structure, and the tooth tops of the sawteeth on the two side walls correspond one to one. The arc-shaped hole 12 can be regarded as a plurality of circular mounting positions (mounting holes) overlapping in sequence along the arc. The center distance between two adjacent mounting positions must be greater than 1 / 3R of the mounting position, and the tooth top distance between two adjacent first protrusions 14 is smaller than the cross-sectional diameter of the limiter 4. The sawtooth arrangement structure of the above-mentioned first protrusions 14 and / or second protrusions 15 facilitates the rotation fine-tuning of the mounting position so that the limiter 4 is clamped in the mounting position.

[0038] In the embodiment of the present application, the specific working principle of the locking member 1 and the locking mechanism is as follows: the locking member 1 includes a body 10, a first limiting structure and a second limiting structure. The body 10 is provided with a connecting hole 11 and an arc hole 12. The arc hole 12 takes the center of the connecting hole 11 as the arc center. The connecting hole 11 is used to dock with the connecting member 3, and the limiting member 4 is used to dock with the arc hole 12. The first limiting structure is arranged at the connecting hole 11 to limit the relative rotation between the connecting hole 11 and the connecting member 3. The second limiting structure is arranged at the arc hole 12, so that the arc hole 12 has a plurality of mounting positions arranged along the arc direction, and the mounting positions are adapted to the limiting member 4 to limit the sliding of the limiting member 4 in the arc hole 12 along the arc direction. The connecting member 3 is restricted by the first limiting structure and cannot rotate relative to the connecting hole 11. The rotation of the connecting member 3 relative to the workpiece 2 is also restricted by the locking member 1 and the limiting member 4. The locking member 1 plays a role in locking and preventing loosening.

[0039] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A locking member, characterized in that: Used for locking a connecting piece on a workpiece, the workpiece is also provided with a limiting piece located on one side of the connecting piece, and the locking piece includes: A body, wherein a connecting hole and an arc-shaped hole are provided on the body, wherein the arc-shaped hole has the center of the connecting hole as the arc center, the connecting hole is used to dock with the connecting member, and the limiting member is used to dock with the arc-shaped hole; A first limiting structure, provided at the connecting hole, for limiting the relative rotation between the connecting hole and the connecting member; The second limiting structure is arranged at the arc-shaped hole, so that the arc-shaped hole has a plurality of installation positions arranged along the arc direction, and the installation positions are adapted to the limiting member to limit the sliding of the limiting member along the arc direction in the arc-shaped hole.

2. The locking element according to claim 1, characterized in that: The first limiting structure includes a limiting plane arranged on the inner wall of the connecting hole.

3. The locking member according to claim 1, characterized in that: The first limiting structure also includes a limiting protrusion or a limiting groove arranged on the inner wall of the connecting hole.

4. The locking element according to claim 3, characterized in that: The second limiting structure includes a plurality of first protrusions arranged along the arc direction, wherein the first protrusions are arranged on an inner wall of one side of the arc-shaped hole, and an area between two adjacent first protrusions is configured as the installation position.

5. The locking element according to claim 4, characterized in that: The second limiting structure includes a plurality of second protrusions arranged along the arc direction, wherein the second protrusions are arranged on the inner wall of the arc-shaped hole away from the first protrusion, and the area between two adjacent first protrusions and two second protrusions spaced apart from the first protrusion constitute the installation position.

6. The locking member according to claim 1, characterized in that: The main body is arranged in a fan shape, the connecting hole is arranged close to the vertex of the fan shape, and the arc hole is arranged close to the arc edge of the fan shape.

7. The locking member according to claim 1, characterized in that: A plurality of rows of arc-shaped holes are arranged at intervals on the main body, and the arcs are arranged along the radial direction of the connecting holes.

8. A locking mechanism, characterized in that: It comprises the locking piece according to any one of claims 1 to 7; the locking mechanism also comprises a workpiece, on which is provided a connecting piece and a limiting piece located on one side of the connecting piece, the connecting piece is docked with the connecting hole, and the arc hole is docked with the limiting piece.

9. The locking mechanism according to claim 8, characterized in that: The limiting member is arranged in a rod shape, and the cross-sectional shape of the limiting member includes a circle, a regular polygon and an irregular shape.

10. The locking mechanism according to claim 8, characterized in that: The connecting piece includes a docking portion for docking with the connecting hole, and the cross-sectional shape of the docking portion is the same as the shape of the connecting hole.

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