Anti-loosening fastening bolt for automobile transmission part

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to an anti-loosening fastening bolt for an automobile transmission component, which comprises a bolt main body, the bolt main body is composed of a bolt head, a first bolt rod body, a second bolt rod body and a third bolt rod body from top to bottom, and the bolt main body is of an integrally formed structure. An anti-loosening sleeve is arranged on the bolt body and located at the position of the second bolt rod body in an inserted and matched mode, a nut is connected to the bolt body and located at the position of the third bolt rod body in a threaded mode, and a round hole where the second bolt rod body can be inserted is formed in the anti-loosening sleeve. The first bolt rod body, the second bolt rod body and the third bolt rod body are arranged on the bolt body, the anti-loosening and fastening functions are achieved through different thread teeth on the second bolt rod body and the third bolt rod body, and locking is achieved through a limiting assembly in the anti-loosening sleeve and the thread teeth on the second bolt rod body; the bolt is prevented from loosening due to external vibration or impact and the like in the using process.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to an anti-loosening fastening bolt for automotive transmission components. Background Technology

[0002] As a core component of power transmission, the stability of the automotive transmission system directly affects the overall vehicle operating safety. The connection of transmission components (such as the transmission housing and gearbox, drive shaft and universal joint, etc.) generally relies on bolt and nut pairs for fastening. However, these connections must withstand multiple effects during vehicle operation, including periodic vibration, alternating loads, and complex environments (such as high temperature, oil, and dust), which places extremely high demands on the anti-loosening performance of the bolts.

[0003] Bolts, as prefabricated components, are simple to manufacture and easy to use, thus having a wide range of applications. However, existing bolts also have a significant drawback: they are prone to loosening and detachment, requiring further improvement in structural reliability. Therefore, we propose an anti-loosening fastening bolt for automotive transmission components. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-loosening fastening bolt for automotive transmission components, so as to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides an anti-loosening fastening bolt for automotive transmission components, comprising:

[0006] The bolt body is composed of a bolt head, a bolt shank 1, a bolt shank 2, and a bolt shank 3 from top to bottom. The bolt body is an integrally formed structure. An anti-loosening sleeve is inserted and fitted on the bolt body at the position of the bolt shank 2. A nut is threaded on the bolt body at the position of the bolt shank 3. The anti-loosening sleeve has a round hole that can accommodate the insertion of the bolt shank 2.

[0007] Two sets of limiting components are symmetrically arranged and located inside the anti-loosening sleeve, and are used to limit the bolt body;

[0008] Two annular grooves are provided, both of which are formed inside the circular hole and correspond to the positions of the two sets of limiting components. The limiting components are slidably installed in the corresponding annular grooves.

[0009] In this technical solution, the limiting component includes:

[0010] Two limiting clamps are symmetrically arranged and slide in a ring groove. A pull rod is fixed to the middle of the outer circumference of the limiting clamp, and the other end of the pull rod passes through the ring groove and extends to the outside. A circular groove is opened in the anti-loosening sleeve at the position where the pull rod passes through. A sliding plate is slidably installed in the circular groove. A spring is provided on the side of the sliding plate away from the limiting clamp. The pull rod is fixedly connected to the sliding plate and sleeved with the spring.

[0011] In this technical solution, a knob is fixed at the external end of the pull rod.

[0012] In this technical solution, the limiting clamp has a semi-arc structure, the upper surface edge of the limiting clamp facing the bolt shank has a guide slope, and the lower surface of the limiting clamp has a planar structure.

[0013] In this technical solution, the thread profile at the second position of the bolt shank is a flat surface on the side closer to the bolt head and a tapered inclined surface on the side farther from the bolt head.

[0014] In this technical solution, a locking washer is provided directly below the bolt head, and the locking washer is fitted with the bolt shank. The upper and lower surfaces of the locking washer are provided with uniformly distributed anti-slip textures.

[0015] In this technical solution, multiple spring washers are provided directly above the anti-loosening sleeve, and the spring washers are fitted together with the bolt rod.

[0016] The beneficial effects of this utility model are:

[0017] 1. The anti-loosening fastening bolt for the automotive transmission component is provided with bolt shank one, bolt shank two, and bolt shank three on the bolt body. The anti-loosening and fastening functions are achieved by using different threads on bolt shank two and bolt shank three. The anti-loosening sleeve inner limiting component locks with the threads on bolt shank two, thus preventing the bolt in this application from loosening during use due to external vibration or impact.

[0018] 2. The anti-loosening fastening bolts used in this automotive transmission component are equipped with locking washers and spring washers. The locking washers provide a lasting locking force to the bolt body, ensuring the stability of the connection. The elastic deformation of the spring washers provides a buffering and shockproof effect, preventing the bolts from loosening under vibration or impact conditions. This effectively reduces the possibility of the device loosening due to external vibration after it is fixed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2This is a cross-sectional view of the anti-loosening sleeve in this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the bolt body in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting component and the anti-loosening sleeve in this utility model;

[0023] Figure 5 This is a schematic diagram of the limiting component in this utility model;

[0024] Figure 6 This is a schematic diagram of the locking gasket in this utility model.

[0025] The markings in the diagram are as follows:

[0026] 1. Bolt body; 2. Bolt head; 3. Bolt shank one; 4. Bolt shank two; 5. Bolt shank three; 6. Anti-loosening sleeve; 7. Nut; 8. Round hole; 9. Annular groove; 10. Round groove; 11. Limiting clamp; 12. Pull rod; 13. Knob; 14. Sliding plate; 15. Spring; 16. Guide slope; 17. Locking washer; 18. Spring washer. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] In the description of this application, 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 exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example

[0032] Please see Figure 1 - Figure 6 As shown, this embodiment provides an anti-loosening fastening bolt for automotive transmission components, including:

[0033] Bolt body 1, which is composed of bolt head 2, bolt shank 1 3, bolt shank 2 4 and bolt shank 3 5 from top to bottom. Bolt body 1 is an integrally formed structure. Anti-loosening sleeve 6 is inserted and fitted on bolt body 1 at the position of bolt shank 2 4. Nut 7 is threaded on bolt body 1 at the position of bolt shank 3 5. The anti-loosening sleeve 6 has a round hole 8 that can accommodate the insertion of bolt shank 2 4.

[0034] Two sets of limiting components are symmetrically arranged and located inside the anti-loosening sleeve 6, and are used to limit the bolt body 1;

[0035] Two annular grooves 9 are opened inside the circular hole 8 and are located at positions corresponding to the two sets of limiting components. The limiting components are slidably installed in the corresponding annular grooves 9.

[0036] In this embodiment, the limiting component includes:

[0037] Two limiting clamps 11 are symmetrically arranged and slide in the annular groove 9. A pull rod 12 is fixed in the middle of the outer circumference of the limiting clamp 11, and the other end of the pull rod 12 passes through the annular groove 9 and extends to the outside. A circular groove 10 is provided in the anti-loosening sleeve 6 at the position where the pull rod 12 passes through. A sliding plate 14 is slidably installed in the circular groove 10. A spring 15 is provided on the side of the sliding plate 14 away from the limiting clamp 11. The pull rod 12 is fixedly connected to the sliding plate 14 and the pull rod 12 and the spring 15 are sleeved in the fit.

[0038] In this embodiment, the limiting clamp 11 has a semi-arc structure, and the upper surface edge of the limiting clamp 11 facing the bolt rod 4 is provided with a guide slope 16, and the lower surface of the limiting clamp 11 has a planar structure.

[0039] In this embodiment, the thread profile at position 4 of the bolt shank is a flat surface on the side near the bolt head 2 and a tapered slope on the side away from the bolt head 2.

[0040] In use, the operator can hold the bolt body 1, then put the locking washer 17 onto the bolt head 2, and then insert the bolt body 1 and the locking washer 17 into the upper part of the connector. At this time, the ends of the bolt body 1, namely the bolt shank 4 and the bolt shank 5, will protrude from the bottom of the through hole of the connector. Then, insert the corresponding number of spring washers 18 onto the bolt body 1, and then align the anti-loosening sleeve 6 with the bolt shank 4 and press it towards the bolt head 2 until the spring washers 18 contact the lower surface of the connector. Then tighten the nut 7.

[0041] During the above process, since the thread teeth on the bolt shank 4 are downwardly oriented, when the bolt shank 4 passes through the limiting clamp 11 in the limiting assembly, it will squeeze the limiting clamp 11, causing the limiting clamp 11 to move outward. When it slides on the upper side of the thread teeth of the bolt shank 4 to the lower surface of the limiting clamp 11, the limiting clamp 11 will be reset under the elastic action of the spring 15. During this process, that is, when the anti-loosening sleeve 6 is pressed towards the bolt head 2, the installer will hear a "click, click, click" sound. This is the sound produced by the limiting clamp 11 constantly colliding with the thread teeth on the bolt shank 4.

[0042] During disassembly, simply unscrew the nut 7 first, then pull the two knobs 13 outwards by hand, so that the knobs 13 drive the limit clamp 11 outwards through the pull rod 12, thereby preventing the limit clamp 11 from locking the threads on the bolt body 4. Then, remove the anti-loosening sleeve 6 downwards and pull the bolt body 1 upwards to separate the bolt body 1 from the connector. Example

[0043] This embodiment provides an anti-loosening fastening bolt for automotive transmission components. In addition to the technical solutions of the above embodiments, it also has the following technical features: a knob 13 is fixed at the external end of the pull rod 12.

[0044] The knob 13 allows installers to easily separate the bolt body 1 from the anti-loosening sleeve 6 when disassembling the device. Example

[0045] This embodiment provides an anti-loosening fastening bolt for automotive transmission components. In addition to the technical solution of the above embodiment, it also has the following technical features: a locking washer 17 is provided directly below the bolt head 2, and the locking washer 17 is sleeved with the bolt shank 3. The upper and lower surfaces of the locking washer 17 are provided with uniformly distributed anti-slip textures.

[0046] The locking washer 17 is disposed between the bolt head 2 and the connector, and the locking washer 17 provides locking force to the bolt body 1 when it is fixedly installed with the connector.

[0047] The main function of the locking washer 17 is to prevent the bolt body 1 or nut 7 from loosening under vibration or impact, providing a lasting locking force and ensuring the stability of the connection. It increases friction through elastic deformation and a toothed surface design, effectively resisting loosening. Example

[0048] This embodiment provides an anti-loosening fastening bolt for automotive transmission components. In addition to the technical solution of the above embodiment, it also has the following technical features: a plurality of spring washers 18 are provided directly above the anti-loosening sleeve 6, and the spring washers 18 are sleeved and engaged with the bolt shank 3.

[0049] One to three flat pads can be further installed above the spring pad 18 to disperse the tightening force of the bolts when fastening the automotive transmission components, reduce the damage of the bolt heads to the connected parts, and fill uneven contact surfaces to reduce the risk of loosening.

[0050] By setting a spring pad 18 between the anti-loosening sleeve 6 and the connector, the elastic deformation of the spring pad 18 provides a buffering and shockproof effect, which can prevent the bolts from loosening under vibration or impact environment, and effectively reduce the possibility of the device falling off due to external vibration after it is fixed.

[0051] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A locking bolt for automotive transmission components, characterized in that, include: The bolt body (1) is composed of a bolt head (2), a bolt shank one (3), a bolt shank two (4) and a bolt shank three (5) from top to bottom. The bolt body (1) is an integrally formed structure. A locking sleeve (6) is inserted and fitted on the bolt body (1) at the position of the bolt shank two (4). A nut (7) is threaded on the bolt body (1) at the position of the bolt shank three (5). A round hole (8) is opened in the locking sleeve (6) to accommodate the insertion of the bolt shank two (4). Two sets of limiting components are arranged symmetrically and located inside the anti-loosening sleeve (6), and are used to limit the bolt body (1); Two annular grooves (9) are provided, both of which are opened in the circular hole (8) and are located at positions corresponding to the two sets of limiting components. The limiting components are slidably installed in the corresponding annular grooves (9).

2. The anti-loosening fastening bolt for automotive transmission components according to claim 1, characterized in that, The limiting component includes: Two limiting clamps (11) are symmetrically arranged and the limiting clamps (11) slide in fit with the annular groove (9). A pull rod (12) is fixed in the middle of the outer circumference of the limiting clamp (11) and the other end of the pull rod (12) passes through the annular groove (9) and extends to the outside. A circular groove (10) is provided in the anti-loosening sleeve (6) at the position where the pull rod (12) passes through. A sliding plate (14) is slidably installed in the circular groove (10). A spring (15) is provided on the side of the sliding plate (14) away from the limiting clamp (11). The pull rod (12) is fixedly connected to the sliding plate (14) and the pull rod (12) is sleeved in fit with the spring (15).

3. The anti-loosening fastening bolt for automotive transmission components according to claim 2, characterized in that, A knob (13) is fixed to the outer end of the pull rod (12).

4. The anti-loosening fastening bolt for automotive transmission components according to claim 2, characterized in that, The limiting clamp (11) has a semi-arc structure. The upper surface edge of the limiting clamp (11) facing the bolt rod (4) has a guide slope (16). The lower surface of the limiting clamp (11) has a planar structure.

5. The anti-loosening fastening bolt for automotive transmission components according to claim 4, characterized in that, The thread profile at the position of the second (4) bolt body is a flat surface on the side near the bolt head (2) and a tapered inclined surface on the side away from the bolt head (2).

6. The anti-loosening fastening bolt for automotive transmission components according to claim 1, characterized in that, A locking washer (17) is provided directly below the bolt head (2), and the locking washer (17) is sleeved with the bolt shank (3). The upper and lower surfaces of the locking washer (17) are provided with uniformly distributed anti-slip textures.

7. The anti-loosening fastening bolt for automotive transmission components according to claim 1, characterized in that, Multiple spring washers (18) are provided directly above the anti-loosening sleeve (6), and the spring washers (18) are sleeved with the bolt rod (3).

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