Anti-loose locking device
Through the limiting groove and interlocking design of the anti-loose locking device, the problem of easy loosening of the nut structure is solved, and stable bearing axial limit is achieved, reducing the requirements for cleanliness and tooling.
Patent Information
- Application Number
- CN202422581337.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-23
AI Technical Summary
In the existing machinery industry, single nut structures are prone to loosening after long-term use. The existing anti-loosening measures require high cleanliness or require special tooling.
An anti-loose locking device is adopted, including a connecting shaft, a gasket and a locking member. Through the interlocking design of the limiting groove, the first protrusion and the locking part, a stable connection is achieved and loosening is avoided.
In the case of lower cleanliness requirements and no special tooling is required, the locking parts are effectively prevented from being loosened and the stability of the bearing axial limit is increased.
Smart Images
Figure CN223294080U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of locking structures, and in particular to an anti-loosening locking device. Background Art
[0002] In the existing machinery industry, axial limiting of bearings is usually achieved by locking nuts. However, a single nut structure is very easy to loosen after long-term use. To address this problem, thread fastener coating and riveting are currently used to increase the anti-loosening ability of the nut. However, the former has high requirements on the gluing process and the cleanliness of single parts, while the latter has very high requirements on the riveting force and riveting tooling. At the same time, riveting will also bring certain cleanliness problems. Utility Model Content
[0003] In view of this, the purpose of the present application is to provide an anti-loosening locking device to solve the problem that the existing method of increasing the anti-loosening ability of the nut has high requirements on cleanliness or requires special tooling.
[0004] In accordance with the above objectives, the present invention provides an anti-loosening and locking device, wherein the anti-loosening and locking device comprises:
[0005] A connecting shaft is formed with a bearing connecting portion and a threaded portion connected in sequence, wherein the threaded portion is provided with a limiting groove;
[0006] a gasket, sleeved on the outer side of the connecting shaft, wherein the inner wall and the outer wall of the gasket are respectively formed with a first convex portion and a second convex portion, and the first convex portion is correspondingly connected to the limiting groove; and
[0007] A locking member is threadedly connected to the threaded portion, and an outer side wall of the locking member is formed with a locking portion correspondingly connected to the second protrusion.
[0008] Preferably, the bearing connection part is formed into a stepped structure, and the small diameter section of the bearing connection part is close to the threaded part, the outer side of the small diameter section is sleeved with a bearing, and the bearing abuts against the end face of the large diameter section of the bearing connection part.
[0009] Preferably, the limiting groove is formed at an outer side wall of the threaded portion, and the limiting groove extends along the axial direction of the connecting shaft and passes through an end surface of the threaded portion away from the bearing connecting portion.
[0010] Preferably, the gasket is formed into an annular structure so that it can be sleeved on the connection between the threaded portion and the bearing connecting portion and abut against the end face of the bearing; the first protrusion extends to the inside of the limiting groove so that the gasket is interlocked with the connecting shaft.
[0011] Preferably, the locking member is formed into an annular structure, and an inner wall of the locking member is formed with an internal thread corresponding to the threaded portion.
[0012] Preferably, a plurality of protruding ribs are formed around the outer side wall of the locking member, and the ribs are formed into a rectangular parallelepiped structure and are evenly spaced; each of the ribs extends along the axial direction of the locking member, and the locking portion is located between any two adjacent ribs.
[0013] Preferably, along the axis direction of the locking member, the first end of the rib is flush with the first end of the locking member, and a gap is formed between the second end of the rib and the second end of the locking member;
[0014] When the locking member is correspondingly connected to the threaded portion, the gasket is located at the second end of the locking member.
[0015] Preferably, a plurality of second protrusions are arranged around the outer side wall of the gasket, and the plurality of second protrusions are evenly spaced.
[0016] Preferably, each of the second protrusions is arranged at an angle, and when the gasket is connected to the connecting shaft, along the radial direction of the gasket, the first end of the second protrusion away from the axis of the gasket is higher than the second end of the second protrusion, so that the gasket can support the locking member.
[0017] Preferably, at least one of the second protrusions is bent and disposed inside the locking portion, so that the gasket and the locking member are interlocked.
[0018] According to the anti-loosening locking device of the present invention, after the bearing is correspondingly connected to the bearing connecting part of the connecting shaft, the gasket is first sleeved on the outer side of the connecting part and the first protrusion of the gasket is correspondingly connected to the limiting groove of the connecting shaft to achieve interlocking of the gasket and the connecting shaft; then the locking piece is correspondingly connected to the threaded part of the connecting shaft, and the second protrusion of the gasket is correspondingly connected to the locking part of the locking piece to achieve interlocking of the gasket and the locking piece. In this way, stable interlocking of the locking piece and the connecting shaft can be achieved. Compared with the existing technology, this device can effectively prevent the locking piece from loosening under the condition of lower cleanliness requirements and without the need for special tooling, thereby increasing the stability of the axial limitation of the bearing.
[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 is a schematic diagram of a connecting shaft according to an embodiment of the present utility model;
[0022] Figure 2 is a schematic diagram of a gasket according to an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the assembly of the bearing, connecting shaft and gasket of an embodiment of the present utility model;
[0024] Figure 4 is a schematic diagram of a locking member according to an embodiment of the present utility model;
[0025] Figure 5 This is a schematic diagram of the assembly of the locking member of an embodiment of the utility model;
[0026] Figure 6 It is a schematic diagram of an anti-loosening locking device according to an embodiment of the present utility model.
[0027] Icons: 1-connecting shaft; 10-threaded part; 100-limiting groove; 11-bearing connecting part; 2-gasket; 20-first protrusion; 21-second protrusion; 3-locking piece; 30-rib; 31-locking part; 4-bearing. DETAILED DESCRIPTION
[0028] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.
[0029] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0030] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.
[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0032] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.
[0033] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.
[0034] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0035] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.
[0036] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
[0037] The utility model provides an anti-loosening locking device, such as Figures 1 to 6 As shown, the anti-loosening locking device in this embodiment includes a connecting shaft 1, a washer 2, and a locking member 3. The connecting shaft 1 is formed with a bearing connection portion 11 for connecting the shaft 1 to the bearing and a threaded portion 10 for connecting the locking member 3. The washer 2 and the locking member 3 can achieve axial positioning of the bearing 4 and effectively prevent the locking member 3 from loosening (after long-term use). The specific structure and connection relationship of the above-mentioned components of the anti-loosening locking device according to the utility model will be described in detail below.
[0038] In this embodiment, if Figure 1 As shown, the bearing connection portion 11 and the threaded portion 10 are connected in sequence to form the connecting shaft 1. Specifically, the bearing connection portion 11 is formed into a stepped structure, i.e., it is formed with a large diameter end and a small diameter section connected in sequence. Along the axial direction of the connecting shaft 1, the small diameter section is close to the threaded portion 10 and is used to connect the bearing 4. When the bearing 4 is sleeved on the outer portion of the small diameter section, the bearing 4 abuts against the end face of the large diameter section (close to the small diameter section), i.e., the large diameter section can play a technical role in limiting the position of the bearing 4. There is no specific limitation on the specifications of the bearing connection portion 11, which should be determined according to the actual situation, i.e., the specifications of the bearing 4, as long as the above-mentioned technical effects can be achieved.
[0039] Furthermore, if Figures 1 to 3As shown, the outer wall of the threaded portion 10 is formed with an external thread. The outer diameter of the threaded portion 10 should be slightly smaller than the outer diameter of the small diameter section of the bearing connection portion 11 to facilitate the installation of the bearing 4. In addition, the outer wall of the threaded portion 10 is also formed with a limiting groove 100 for interlocking with the gasket 2. Specifically, the limiting groove 100 extends along the axial direction of the connecting shaft 1 and passes through the end face of the threaded portion 10 away from the bearing connection portion 11. Correspondingly, the gasket 2 is formed into an annular structure so that it can be installed at the connection between the threaded portion 10 and the bearing connection portion 11 and abut against the end face of the bearing 4. The inner wall of the gasket 2 is formed with a first protrusion 20 corresponding to the limiting groove 100. When the gasket 2 is assembled with the connecting shaft 1, the first protrusion 20 is extended into the interior of the limiting groove 100. This allows the gasket 2 to interlock with the connecting shaft 1, thus achieving circumferential limitation of the gasket 2.
[0040] In this embodiment, if Figure 4 As shown, the locking member 3 is formed into an annular structure, with an internal thread formed on its inner wall corresponding to the threaded portion 10. The locking member 3 is threadedly mounted on the threaded portion 10, further enabling circumferential positioning of the bearing 4. The outer wall of the locking member 3 is surrounded by a plurality of protruding ribs 30, each of which is a rectangular parallelepiped structure and evenly spaced. Each rib 30 extends along the axis of the locking member 3, and the space between any two adjacent ribs 30 forms a locking portion 31. Furthermore, along the axis of the locking member 3, the first end of each rib 30 is flush with the first end of the locking member 3, and the second end of each rib 30 is spaced apart from the second end of the locking member 3 to facilitate the bending of the second protrusion 21 described below, thereby facilitating the corresponding connection between the second protrusion 21 and the locking portion 31.
[0041] Correspondingly, if Figure 2 as well as Figures 4 and 5 As shown, a plurality of second protrusions 21 are arranged around the outer wall of the gasket 2, and the plurality of second protrusions 21 are evenly spaced; further, each second protrusion 21 is arranged at an angle, and when the gasket 2 is correspondingly connected to the connecting shaft 1, along the radial direction of the gasket 2, the first end of the second protrusion 21 away from the axis of the gasket 2 is higher than the second end of the second protrusion 21, so that when the locking member 3 is correspondingly connected to the threaded portion 10, the gasket 2 is located at the second end of the locking member 3 and can support the locking member 3; and then at least one second protrusion 21 is bent and arranged inside the locking portion 31, so that the gasket 2 and the locking member 3 are interlocked.
[0042] It should be noted that there are no specific restrictions on the specifications, spacing, and number of the ribs 30, as long as they can cooperate with the gasket 2 to achieve the above-mentioned technical effects. Based on the structure of the second protrusion 21 that needs to be bent, the gasket 2 can be formed as a rubber piece, and then the second protrusion 21 is correspondingly engaged with the locking portion 31 (i.e., the second protrusion 21 is bent to form an interference fit with the locking portion 31).
[0043] According to the anti-loosening locking device of the present invention, after the bearing 4 is correspondingly connected to the bearing connecting portion 11 of the connecting shaft 1, the gasket 2 is first sleeved on the outer side of the connecting portion and the first protrusion 20 of the gasket 2 is correspondingly connected to the limiting groove 100 of the connecting shaft 1 to achieve the interlocking of the gasket 2 and the connecting shaft 1; and then the locking member 3 is correspondingly connected to the threaded portion 10 of the connecting shaft 1, and the second protrusion 21 of the gasket 2 is correspondingly connected to the locking portion 31 of the locking member 3 to achieve the interlocking of the gasket 2 and the locking member 3. In this way, the locking member 3 and the connecting shaft 1 can be stably interlocked. Compared with the prior art, the present device can effectively prevent the locking member 3 from loosening under the condition of lower cleanliness requirements and without the need for special tooling, thereby increasing the stability of the axial limitation of the bearing 4.
[0044] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.
Claims
1. An anti-loosening locking device, characterized in that: The anti-loosening locking device comprises: A connecting shaft is formed with a bearing connecting portion and a threaded portion connected in sequence, wherein the threaded portion is provided with a limiting groove; a gasket, sleeved on the outer side of the connecting shaft, wherein the inner wall and the outer wall of the gasket are respectively formed with a first convex portion and a second convex portion, and the first convex portion is correspondingly connected to the limiting groove; and A locking member is threadedly connected to the threaded portion, and an outer side wall of the locking member is formed with a locking portion correspondingly connected to the second protrusion.
2. The anti-loosening locking device according to claim 1, characterized in that: The bearing connection part is formed into a stepped structure, and the small diameter section of the bearing connection part is close to the threaded part. The outer part of the small diameter section is sleeved with a bearing, and the bearing abuts against the end surface of the large diameter section of the bearing connection part.
3. The anti-loosening locking device according to claim 2, characterized in that: The limiting groove is formed at the outer side wall of the threaded portion. The limiting groove extends along the axial direction of the connecting shaft and passes through the end surface of the threaded portion away from the bearing connecting portion.
4. The anti-loosening locking device according to claim 3, characterized in that: The gasket is formed into an annular structure so that it can be sleeved on the connection between the threaded portion and the bearing connecting portion and abut against the end face of the bearing; the first protrusion extends to the inside of the limiting groove so that the gasket is interlocked with the connecting shaft.
5. The anti-loosening locking device according to claim 1, characterized in that: The locking member is formed into an annular structure, and an inner wall of the locking member is formed with an internal thread corresponding to the threaded portion.
6. The anti-loosening locking device according to claim 5, characterized in that: A plurality of protruding ribs are formed around the outer side wall of the locking member, and the ribs are formed into a rectangular parallelepiped structure and are evenly spaced; each of the ribs extends along the axial direction of the locking member, and the locking portion is located between any two adjacent ribs.
7. The anti-loosening locking device according to claim 6, characterized in that: Along the axis direction of the locking member, the first end of the rib is flush with the first end of the locking member, and a gap is formed between the second end of the rib and the second end of the locking member; When the locking member is correspondingly connected to the threaded portion, the gasket is located at the second end of the locking member.
8. The anti-loosening locking device according to claim 7, characterized in that: A plurality of second protrusions are arranged around the outer side wall of the gasket, and the plurality of second protrusions are evenly spaced.
9. The anti-loosening locking device according to claim 8, characterized in that: Each of the second protrusions is arranged at an angle. When the gasket is connected to the connecting shaft, along the radial direction of the gasket, the first end of the second protrusion away from the axis of the gasket is higher than the second end of the second protrusion, so that the gasket can support the locking member.
10. The anti-loosening locking device according to claim 9, characterized in that: At least one of the second protrusions is bent and disposed inside the locking portion, so that the gasket and the locking member are interlocked.