Automobile synchronizer with high durability

Abstract

The utility model discloses an automobile synchronizer with high durability, relates to the technical field of synchronizers, and aims to improve the wear resistance of inner teeth of a joint sleeve so as to improve the overall durability. The locking device comprises a joint sleeve, a splined hub and a locking ring, six base plates are arranged on the inner wall of the joint sleeve, and every three base plates form a group and are symmetrically distributed in the axis direction of the joint sleeve; the three base plates are distributed around the axis of the joint sleeve at equal angles; a plurality of strip-shaped teeth are arranged on the base plate, and the length direction of the strip-shaped teeth is consistent with the axial direction of the joint sleeve; and a wear-resistant coating is arranged on the side wall of the strip-shaped tooth.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronizers, in particular to an automobile synchronizer with high durability. Background Art

[0002] The synchronizer is a key component for the car to perform gear shifting, which enables the two shifting gears to reach the same speed. Synchronizers often fail due to wear, and an important part of the reason is the wear of the inner teeth of the coupling sleeve. In addition to meshing with the spline hub to withstand torque, the coupling sleeve also has to move horizontally during the gear shifting process, so the inner teeth of the coupling sleeve will wear. When the wear is severe, it will cause the gap with the spline hub to increase, and then it will be impossible to align the lock ring and affect the gear shifting. Therefore, this application aims to propose a solution to improve durability. Summary of the invention

[0003] The utility model proposes a highly durable automobile synchronizer, comprising a coupling sleeve, a spline hub and a lock ring; six pads are arranged on the inner wall of the coupling sleeve, three pads form a group and are symmetrically distributed in the axial direction of the coupling sleeve; the three pads are distributed at equal angles around the axis of the coupling sleeve; a plurality of strip teeth are arranged on the pads, the length direction of the strip teeth is consistent with the axial direction of the coupling sleeve; and the side walls of the strip teeth are provided with a wear-resistant coating.

[0004] The utility model is further configured as follows: the bar teeth are provided with weight-reducing grooves.

[0005] The utility model is further configured as follows: the bar teeth are connected to the backing plate by bolts, and the bolts are located in the weight-reducing grooves.

[0006] The beneficial effects of the utility model are:

[0007] The wear-resistant performance of the bar teeth with wear-resistant coating is much higher than that of the original metal material. After long-term use, the bar teeth are worn out and can be replaced to continue to maintain good performance and also improve the durability of the synchronizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the joint sleeve in the utility model;

[0009] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0010] Figure numerals: 1, pad; 2, bar teeth; 21, weight-reducing groove; 3, bolt. DETAILED DESCRIPTION

[0011] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0012] See also Figure 1-2 The utility model proposes a highly durable automobile synchronizer, including a coupling sleeve, a spline hub and a locking ring. The spline hub and the locking ring are not shown because they have not been improved. In the prior art, the coupling sleeve is integrally formed, and is provided with teeth meshing with the spline hub inside, but the material of the teeth or the processing of the teeth will be limited by the coupling sleeve. Therefore, in this scheme, the inner wall of the coupling sleeve is smooth, and the inner wall of the coupling sleeve is provided with six arc-shaped pads 1. Every three pads 1 form a group and are symmetrically distributed in the axial direction of the coupling sleeve. The three pads 1 are distributed at equal angles around the axial direction of the coupling sleeve. A number of strip teeth 2 are connected to each pad 1. The length direction of the strip teeth 2 is consistent with the axial direction of the coupling sleeve. The strip teeth 2 are used to mesh with the spline hub and can cooperate with the locking ring. In the prior art, the structural forms of the teeth in the coupling sleeve are various, and the shape of the strip teeth 2 in the accompanying drawings only corresponds to one of them.

[0013] The strip teeth 2 are provided with weight-reducing grooves 21, and the strip teeth 2 are connected to the backing plate 1 by two bolts 3, and the bolts 3 are located in the weight-reducing grooves 21. Therefore, the weight-reducing grooves 21 are not only used for weight reduction, but also can hide the bolt heads of the bolts 3.

[0014] For fixing the pad 1, pins can be used to connect the pad 1 to the inner wall of the coupling sleeve. The bolts 3 mentioned above can also be used. For example, the length of the bolts 3 distributed at the four corners of each pad 1 is longer than the thickness of the pad 1, and the corresponding holes on the pad 1 are changed from threaded holes to through holes, and then the bolts 3 are screwed onto the inner wall of the coupling sleeve, which also fixes the pad 1.

[0015] The side wall of the strip teeth 2 is provided with a wear-resistant coating. Since the strip teeth 2 can be disassembled independently, it is convenient to process the coating, and only the side surface can be processed in a targeted manner, which can save materials. The materials and production of the wear-resistant coating are both existing technologies. However, the wear-resistant performance of the strip teeth 2 with the wear-resistant coating is much higher than that of the original metal material. In addition, the material of the strip teeth 2 can be replaced according to different usage needs, and the strip teeth 2 are not limited to the coupling sleeve, so by adjusting the strip teeth 2, the durability can be further improved.

[0016] In addition, when the bar teeth 2 are worn out after long-term use, the bar teeth 2 can be replaced to continue to maintain good performance, which also improves the durability of the synchronizer.

[0017] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0018] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0020] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0021] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A highly durable automobile synchronizer, characterized in that: Includes a coupling sleeve, a spline hub and a lock ring; The inner wall of the coupling sleeve is provided with six pads (1), three of which form a group and are symmetrically distributed in the axial direction of the coupling sleeve; the three pads (1) are distributed at equal angles around the axis of the coupling sleeve; a plurality of strip teeth (2) are provided on the pads (1), the length direction of the strip teeth (2) is consistent with the axial direction of the coupling sleeve; and the side walls of the strip teeth (2) are provided with a wear-resistant coating.

2. The highly durable automobile synchronizer according to claim 1, characterized in that: The bar teeth (2) are provided with weight-reducing grooves (21).

3. The highly durable automobile synchronizer according to claim 2, characterized in that: The bar teeth (2) are connected to the backing plate (1) via bolts (3), and the bolts (3) are located in the weight-reducing grooves (21).

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