Alignment installation auxiliary tool for automobile gear

By designing an auxiliary tool for a vehicle gear alignment and installation including a shaft part and a sleeve part, the problem of poor alignment accuracy between the motor and the reducer is solved, the effect of reducing alignment deviation and collision damage is achieved, and the assembly process is simplified.

CN222270138UActive Publication Date: 2024-12-31SAIC GM WULING AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202323508756.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-22
Publication Date
2024-12-31
Estimated Expiration
2033-12-22

AI Technical Summary

Technical Problem

In the assembly of new energy vehicles, when the motor and reducer are connected coaxially, due to the poor visual accuracy, it is easy to deviate from the alignment of the external teeth of the spline shaft and the internal teeth of the installation groove, causing collision damage and affecting torque transmission.

Method used

Design an auxiliary tool for accelerating and mounting of the gears, including a shaft portion, a connecting portion and a sleeve portion, the outer teeth of the shaft portion mesh with the inner teeth of the sleeve portion, and are plugged into the spline groove of the motor and the spline of the reducer. The shaft realizes indirect alignment adjustment between the motor and the reducer, reducing collision damage caused by direct operation.

Benefits of technology

Through the use of auxiliary tools, it is easy to adjust the angle of the motor, reduce collision damage when the motor is connected to the reducer, improve alignment accuracy, simplify the assembly process, and reduce operation difficulty.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automobile gear counterpoint installation auxiliary tool which comprises a main body, the main body comprises a shaft part, a connecting part and a sleeve part which are connected in sequence, a plurality of outer teeth are distributed on the peripheral wall of the shaft part in the circumferential direction, the shaft part is used for being inserted into a spline groove of a motor, and the shaft part is used for being inserted into the spline groove of the motor. The sleeve part is provided with a mounting groove, the mounting groove is used for being in butt joint with a spline shaft of the speed reducer, a plurality of inner teeth are distributed on the inner circumferential wall of the mounting groove in the circumferential direction, and the extending direction of any outer tooth is located between every two adjacent inner teeth. According to the automobile gear alignment installation auxiliary tool of the structure, gear alignment operation of the motor and the speed reducer can be indirectly carried out, and therefore collision damage caused by inaccurate alignment of the motor and the speed reducer in the assembling process is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of automobile gear assembly, in particular to an automobile gear alignment installation auxiliary tool. Background Art

[0002] At present, in the assembly of new energy vehicles, the motor and reducer need to be coaxially connected and use splines for torque transmission. Figure 3 When the motor is in a suspended state, people push the motor to move so that the spline groove of the motor 200 and the spline shaft 310 of the reducer 300 are embedded with each other.

[0003] In order to ensure the accurate alignment of the outer teeth of the spline shaft and the inner teeth of the mounting slot, people adjust the motor installation angle by visual inspection. However, due to the poor accuracy of visual inspection and the heavy weight of the motor, the adjustment is difficult. If the motor alignment is deviated, it is easy to cause the outer teeth of the spline shaft and the inner teeth of the mounting slot to collide and be damaged, thus affecting the subsequent torque transmission. Utility Model Content

[0004] In view of the above shortcomings, the utility model proposes an automobile gear alignment installation auxiliary tool, which can indirectly perform the gear alignment operation between the motor and the reducer, thereby reducing the collision damage caused by the misalignment of the two during assembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An auxiliary tool for aligning and installing automobile gears, comprising: a main body, the main body comprising a shaft portion, a connecting portion and a sleeve portion connected in sequence, the outer peripheral wall of the shaft portion being circumferentially provided with a plurality of external teeth, the shaft portion being used to be inserted into a spline groove of a motor, the sleeve portion being provided with a mounting groove, the mounting groove being used to dock with a spline shaft of a reducer, the inner peripheral wall of the mounting groove being circumferentially provided with a plurality of internal teeth, wherein the extension direction of any one of the external teeth is located between two adjacent internal teeth.

[0007] The automobile gear alignment installation auxiliary tool according to the embodiment of the utility model has at least the following beneficial effects: when the motor is in a suspended state, the shaft is first inserted into the spline groove of the motor, and then the motor is rotated so that the sleeve part and the spline shaft of the reducer are connected to each other, thereby indirectly completing the gear alignment step of the motor and the reducer, and finally fixing the angle of the motor, and only translating the motor to disassemble the main body, which is conducive to people directly translating the motor later, so as to complete the assembly and docking of the motor and the reducer. Among them, using a lighter main body to dock the motor and the reducer respectively is not only convenient for adjusting the angle of the motor, but also helps to reduce the collision damage caused by the previous direct operation of docking the heavier motor with the reducer.

[0008] Furthermore, a positioning groove is provided on the outer peripheral wall of the sleeve portion, and an extending direction of the positioning groove is parallel to a length direction of the external teeth.

[0009] Furthermore, the length of the inner teeth is smaller than the length of the mounting groove, and an end of the inner teeth away from the connecting portion and a notch of the mounting groove are spaced apart to form a cylindrical plug-in channel.

[0010] Furthermore, a buffer gasket is provided on the bottom wall of the installation groove.

[0011] Furthermore, one end of the shaft portion away from the connecting portion is provided with a chamfer.

[0012] Furthermore, the shaft portion, the connecting portion and the sleeve portion are an integrated structure.

[0013] Furthermore, an arc transition surface is provided at one end of each of the inner teeth away from the connecting portion, and a plurality of the arc transition surfaces together define a truncated cone-shaped channel, and a large end of the truncated cone-shaped channel faces the notch of the mounting groove.

[0014] Furthermore, the main body is a plastic part.

[0015] Furthermore, the connecting portion is cylindrical.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of an auxiliary tool for aligning and installing automobile gears of the utility model;

[0019] Figure 2 for Figure 1 An internal cross-sectional view of an embodiment;

[0020] Figure 3 This is a schematic diagram of the partial assembly of the existing reducer and motor.

[0021] In the figure: main body 100 , shaft portion 110 , external teeth 111 , connecting portion 120 , sleeve portion 130 , mounting groove 131 , internal teeth 132 , positioning groove 133 , buffer gasket 134 , arc transition surface 135 , motor 200 , reducer 300 , spline shaft 310 . DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If the terms "first" or "second" are described, they are only used for descriptive purposes and cannot be understood to indicate or imply relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figures 1 to 3 , an automobile gear alignment installation auxiliary tool, comprising: a main body 100, the main body 100 comprises a shaft portion 110, a connecting portion 120 and a sleeve portion 130 connected in sequence, the outer peripheral wall of the shaft portion 110 is circumferentially distributed with a plurality of external teeth 111, the shaft portion 110 is used to be inserted into the spline groove of the motor 200, the sleeve portion 130 is provided with a mounting groove 131, the mounting groove 131 is used to dock with the spline shaft 310 of the reducer 300, the inner peripheral wall of the mounting groove 131 is circumferentially distributed with a plurality of internal teeth 132, wherein the extension direction of any one of the external teeth 111 is located between two adjacent internal teeth 132.

[0027] The above-structured automobile gear alignment installation auxiliary tool, when the motor 200 is in a suspended state, first inserts the shaft portion 110 into the spline groove of the motor 200, and then rotates the motor 200 so that the sleeve portion 130 and the spline shaft 310 of the reducer 300 are butted against each other, thereby indirectly completing the gear alignment step of the motor 200 and the reducer 300, and finally fixes the angle of the motor 200, and only translates the motor 200 to disassemble the main body 100, which is conducive to people's subsequent direct translation of the motor 200, so as to complete the assembly and docking of the motor 200 and the reducer 300. Among them, the use of a lighter main body 100 to respectively dock the motor 200 and the reducer 300 is not only conducive to adjusting the angle of the motor 200, but also conducive to reducing the collision damage caused by the previous direct operation of docking the heavier motor 200 with the reducer 300.

[0028] It is understandable that the outer teeth 111 of the shaft 110 mesh with the inner teeth 132 of the sleeve 130 in the axial projection, and the outer teeth 111 are the same as the outer spline structure on the spline shaft 310 of the reducer 300, and the inner teeth 132 are the same as the inner spline structure of the spline groove of the motor 200, so as to ensure that the spline shaft 310 can be smoothly matched with the spline groove after people align the tool. During assembly, the operator holds the main body 100 and plugs the shaft 110 into the spline groove of the motor 200. Since manual assembly is adopted, people can easily mesh the outer teeth 111 of the shaft 110 with the spline groove, which is conducive to reducing the collision damage between the shaft 110 and the spline groove.

[0029] See also Figures 1 to 3 Furthermore, the outer peripheral wall of the sleeve portion 130 is provided with a positioning groove 133, and the extension direction of the positioning groove 133 is parallel to the length direction of the external teeth 111. Specifically, the setting of the positioning groove 133 is conducive to people being able to quickly judge and adjust the tooth alignment effect of the sleeve portion 130 and the spline shaft 310 by observing whether the external spline of the reducer 300 is opposite to the positioning groove 133 outside the main body 100, so that people can rotate the main body 100 based on the positioning groove 133, which is conducive to improving the alignment efficiency of the sleeve portion 130 and the spline shaft 310. In some instances, the positioning groove 133 can also be replaced by a positioning convex strip or a positioning line structure, and the sleeve portion 130 and the spline shaft 310 can also be quickly aligned based on this structure. The specific details are not described in detail.

[0030] See also Figure 2Furthermore, the length of the inner teeth 132 is less than the length of the mounting groove 131, and the end of the inner teeth 132 away from the connection portion 120 and the notch of the mounting groove 131 form a cylindrical plug-in channel. Specifically, after the shaft portion 110 is plugged into the spline groove of the motor 200, people can temporarily insert the spline shaft 310 of the reducer 300 into the plug-in channel, so that people can rotate the motor 200 later, so that the sleeve portion 130 can adjust the angle in time, so that the spline shaft 310 can mesh with the inner teeth 132 in time, and further speed up the tooth matching efficiency of the sleeve portion 130 and the spline shaft 310.

[0031] See also Figure 2 Furthermore, a buffer gasket 134 is provided on the bottom wall of the installation groove 131, so as to prevent the spline shaft 310 of the reducer 300 from directly and rigidly colliding with the connecting portion 120, which is conducive to further reducing the damage caused by the assembly of the spline shaft 310. It can be understood that the inner wall of the installation groove 131 is provided with an annular groove, the axis of the annular groove is arranged colinearly with the axis of the installation groove 131, and the buffer gasket 134 is embedded in the annular groove, so that the annular groove and the gasket form a snap fit, so as to quickly install or remove the buffer gasket 134 later. Among them, the buffer gasket 134 can be made of materials such as plastic, rubber and sponge, and is not specifically limited.

[0032] Furthermore, one end of the shaft portion 110 away from the connecting portion 120 is provided with a chamfer. Specifically, the processing of the chamfer is relatively simple, the manufacturing is convenient, and it is also helpful to avoid the presence of sharp burrs on the end face of the shaft portion 110 and scratching the inner wall of the spline groove of the motor 200. In addition, the chamfer also facilitates the shaft portion 110 to be smoothly docked with the spline groove of the motor 200, thereby playing a guiding role. It is understandable that the angle of the chamfer can be 30 degrees, 45 degrees or 60 degrees, which is selected according to actual conditions.

[0033] See also Figure 1 and Figure 2 Furthermore, the shaft portion 110, the connecting portion 120 and the sleeve portion 130 are an integrated structure, which is conducive to ensuring that the main body 100 has good structural strength and reducing the occurrence of fracture or deformation of the main body 100. It can be understood that the shaft portion 110, the connecting portion 120 and the sleeve portion 130 can be integrally formed by integral injection molding, or can be fixed together by mutual welding, and the specific details are not limited.

[0034] See also Figure 1 and Figure 2, further, each inner tooth 132 is provided with an arc transition surface 135 at one end away from the connecting portion 120, and the plurality of arc transition surfaces 135 jointly define a truncated cone-shaped channel, the large end of the truncated cone-shaped channel facing the notch of the mounting groove 131. Specifically, the arc transition surface 135 plays a role similar to chamfering, so that one end of the inner tooth 132 is transitioned in an arc, so that it is less likely to collide with the spline shaft 310 in the subsequent alignment. In some embodiments, the arc transition surface 135 is 1 to 2 times the full height of the teeth of the inner tooth 132, so as to form a transition approaching 45 degrees, thereby forming a smoother arc surface. The arc transition surface 135 of appropriate size is convenient for meshing alignment, and the arc transition surface 135 that is not too small has a small effect on the alignment of the inner tooth 132 and the spline shaft 310, and the inner tooth 132 has sufficient structural strength, and the arc transition surface 135 that is not too large has a significant impact on the structural strength of the inner tooth 132.

[0035] Furthermore, the main body 100 is a plastic part, which is beneficial to reducing the mass of the main body 100, facilitating the taking of the main body 100 for assembly, and can prevent the hardness of the main body 100 from being greater than the spline shaft 310 or the spline groove, thereby reducing the collision damage caused by the main body 100 to the spline shaft 310 or the spline groove.

[0036] See also Figure 1 and Figure 2 Furthermore, the connecting portion 120 is cylindrical, which not only makes it convenient for people to rotate the main body 100, but also makes it convenient for people to hold the main body 100 to improve the user experience.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An auxiliary tool for automobile gear alignment and installation, characterized in that: include: A main body (100), the main body (100) comprising a shaft portion (110), a connecting portion (120) and a sleeve portion (130) connected in sequence, the outer peripheral wall of the shaft portion (110) being circumferentially provided with a plurality of external teeth (111), the shaft portion (110) being used for being plugged into a spline groove of a motor (200), the sleeve portion (130) being provided with a mounting groove (131), the mounting groove (131) being used for docking with a spline shaft (310) of a reducer (300), the inner peripheral wall of the mounting groove (131) being circumferentially provided with a plurality of internal teeth (132), wherein the extension direction of any one of the external teeth (111) is located between two adjacent internal teeth (132).

2. The automobile gear alignment installation auxiliary tool according to claim 1, characterized in that: The outer peripheral wall of the sleeve portion (130) is provided with a positioning groove (133), and the extending direction of the positioning groove (133) is parallel to the length direction of the external teeth (111).

3. The automobile gear alignment installation auxiliary tool according to claim 1, characterized in that: The length of the inner teeth (132) is smaller than the length of the mounting groove (131), and an end of the inner teeth (132) away from the connecting portion (120) and a notch of the mounting groove (131) are spaced to form a cylindrical plug-in channel.

4. The automobile gear alignment installation auxiliary tool according to claim 1, characterized in that: A buffer gasket (134) is provided on the bottom wall of the installation groove (131).

5. The automobile gear alignment installation auxiliary tool according to claim 1, characterized in that: An end of the shaft portion (110) away from the connecting portion (120) is provided with a chamfer.

6. The automobile gear alignment and installation auxiliary tool according to claim 1, characterized in that: The shaft portion (110), the connecting portion (120) and the sleeve portion (130) are an integrated structure.

7. The automobile gear alignment and installation auxiliary tool according to claim 1, characterized in that: An arc transition surface (135) is provided at one end of each inner tooth (132) away from the connecting portion (120), and a plurality of the arc transition surfaces (135) together define a truncated cone-shaped channel, the large end of the truncated cone-shaped channel facing the notch of the mounting groove (131).

8. The automobile gear alignment and installation auxiliary tool according to claim 1, characterized in that: The main body (100) is a plastic part.

9. The automobile gear alignment and installation auxiliary tool according to claim 1, characterized in that: The connecting portion (120) is cylindrical.