Auxiliary tool and vehicle

Abstract

The utility model belongs to the technical field of differential assembly, and particularly relates to an auxiliary tool and a vehicle, the auxiliary tool comprises a positioning top block arranged between a first half axle gear set and a second half axle gear set, the positioning top block comprises an upper top block and a lower top block which can slide mutually, and the upper top block and the lower top block are arranged on the first half axle gear set and the second half axle gear set; the upper jacking block is propped against the first half axle gear set, and the lower jacking block is propped against the second half axle gear set; the part, inserted into the differential shell, of the compression assembly is connected with the positioning ejector block; the upper ejector block and the lower ejector block can apply extrusion force to the first half axle gear set and the second half axle gear set in the moving process of the compression assembly so as to compress the first half axle gear set and the second half axle gear set. The assembly progress and the assembly precision of the differential mechanism can be improved, and in addition, the convenience in the differential mechanism assembly process can be improved through the positioning ejector block and the compression assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of differential assembly, and in particular relates to an auxiliary tooling and a vehicle. Background Art

[0002] In automobile transmissions or electric drive systems, two wave washers or arc-shaped thrust washers are often set between the two half-shaft gears and the differential housing. The wave washers are in a compressed state in the differential. The elastic force generated by the compression can hold the half-shaft gears close to the differential housing, thereby greatly reducing the abnormal noise of the differential during vehicle driving. When assembling the differential, it is necessary to first apply a large pressure to the wave washers to compress them to a certain stroke before the half-shaft gears, planetary gears and other parts can be assembled in place.

[0003] At the same time, due to the small assembly space of the differential and the high assembly precision requirements, the industry currently mainly adopts manual installation process solutions, conventionally using crowbars, threading and other methods to compress the corrugated washers. However, this method has the problems of cumbersome operation, difficult to control force and stroke, and poor actual use effect. Utility Model Content

[0004] The purpose of the present application is to provide an auxiliary tooling and a vehicle, which can improve the assembly accuracy and assembly progress of the differential.

[0005] In a first aspect, the present application provides an auxiliary tool, which is used for assembling a differential, wherein the differential comprises a differential housing, a first side shaft gear set and a second side shaft gear set, wherein the first side shaft gear set and the second side shaft gear set are arranged in the differential housing, and the auxiliary tool comprises:

[0006] A positioning top block is provided between the first side shaft gear set and the second side shaft gear set, the positioning top block comprises an upper top block and a lower top block which can slide against each other, the upper top block abuts against the first side shaft gear set, and the lower top block abuts against the second side shaft gear set;

[0007] A compression assembly, a portion of the compression assembly inserted into the differential housing and connected to the positioning top block;

[0008] Wherein, the upper push block and the lower push block can respectively apply extrusion force to the first half-shaft gear set and the second half-shaft gear set during the movement of the compression assembly to compress the first half-shaft gear set and the second half-shaft gear set.

[0009] In an exemplary embodiment of the present application, the upper top block and the lower top block form a moving chamber;

[0010] The positioning top block includes an insertion hole, and the compression assembly is inserted into the movable chamber through the insertion hole. The compression assembly can move in the movable chamber to drive the upper top block to move toward the direction close to the first half-shaft gear set, and drive the lower top block to move toward the direction close to the second half-shaft gear set.

[0011] In an exemplary embodiment of the present application, the upper top block includes an abutment groove and the insertion hole, and the abutment groove is provided on opposite sides of the insertion hole;

[0012] The compression assembly comprises a push rod and a hook block, and when the compression assembly is inserted into the movable chamber, the push rod and the hook block are arranged in the movable chamber;

[0013] When the compression assembly moves, the push rod pushes the lower push block to move toward the direction close to the second half-shaft gear set, the hook block contacts the abutment groove, and drives the upper push block to move toward the direction close to the first half-shaft gear set.

[0014] In an exemplary embodiment of the present application, the compression assembly further comprises:

[0015] A pull rod, wherein the pull rod is provided with a through hole penetrating along the axial direction thereof, the push rod is arranged in the through hole, and the hook block is arranged on the outer side of the pull rod;

[0016] A gripping member, comprising a gripping portion and a fixing portion, wherein the gripping portion is connected to the fixing portion via an inclined pull block, and the fixing portion is connected to the through hole;

[0017] A telescopic rod, the telescopic rod is connected to the gripping portion, the telescopic rod passes through the fixing portion, and a portion of the telescopic rod is disposed in the through hole, and the telescopic rod disposed in the through hole is connected to the top rod disposed in the through hole;

[0018] Wherein, when the holding portion is pressed downward toward the direction of the second side shaft gear set:

[0019] The holding portion drives the telescopic rod to move toward the direction of the second half-shaft gear set, thereby driving the push rod to push the lower push block to move toward the direction of the second half-shaft gear set;

[0020] The fixing portion drives the pull rod to move toward the first half-shaft gear set, thereby driving the hook block on the outside of the pull rod to abut against the abutment groove, so as to drive the upper push block to move toward the first half-shaft gear set.

[0021] In an exemplary embodiment of the present application, the fixing portion is threadedly connected to the through hole, and the auxiliary tooling further includes a first fixing member, which is used to fasten the fixing portion and the pull rod;

[0022] The telescopic rod is threadedly connected to the push rod, and the auxiliary tooling further includes at least two second fixing members, which are sleeved on the outside of the telescopic rod and the push rod.

[0023] In an exemplary embodiment of the present application, the lower top block is inserted into the upper top block, the outer side of the upper top block is provided with a waist round hole, the outer side of the lower top block is provided with a threaded hole, and the waist round hole of the upper top block corresponds to the threaded hole of the lower top block;

[0024] The positioning top block also includes a moving piece, which is inserted into the oval hole of the upper top block and the threaded hole of the lower top block in sequence, and the moving piece can slide in the oval hole of the upper top block.

[0025] In an exemplary embodiment of the present application, the pull rod further comprises a limit block, the limit block and the hook block are sequentially arranged at intervals in the axial direction of the pull rod, and the limit block is arranged on a side of the hook block away from the positioning top block;

[0026] When the compression assembly is inserted into the moving chamber, the stop block abuts against the end surface of the differential housing.

[0027] In an exemplary embodiment of the present application, the pull rod is further provided with a spline, and the spline matches the internal spline in the first half-shaft gear set, and when the pull rod rotates, it can drive the first half-shaft gear set to rotate.

[0028] In an exemplary embodiment of the present application, the auxiliary tooling further includes:

[0029] A positioning base, comprising a base body, a positioning column and an anti-rotation column, wherein the positioning column and the anti-rotation column are both arranged on the base body, and the positioning column and the anti-rotation column are arranged at intervals;

[0030] The positioning column comprises a first positioning portion and a second positioning portion connected to each other, the first positioning portion is arranged at a side of the second positioning portion away from the base body, the first positioning portion is inserted into the second side shaft gear set, and the second positioning portion is inserted into the differential housing;

[0031] The anti-rotation column is inserted in the differential housing.

[0032] A second aspect of the present application provides a vehicle, comprising a differential assembled using any of the auxiliary tooling described above.

[0033] This application scheme has the following beneficial effects:

[0034] The present application includes an auxiliary tool and a vehicle. The auxiliary tool can be used for the assembly of a differential. The auxiliary tool includes a positioning top block and a compression assembly. The positioning top block is arranged between the first half-axle gear set and the second half-axle gear set of the differential. The positioning top block includes an upper top block and a lower top block that can slide against each other. The upper top block and the lower top block are respectively in contact with the first half-axle gear set and the second half-axle gear set. The compression assembly is connected to the positioning top block. The upper top block and the lower top block can move toward the first half-axle gear set and the second half-axle gear set respectively during the movement of the compression assembly, and apply a squeezing force to the first half-axle gear set and the second half-axle gear set to compress the first half-axle gear set and the second half-axle gear set. The assembly efficiency and assembly accuracy of the differential can be improved by the positioning top block and the compression assembly, and the convenience of the differential assembly process can also be improved by the positioning top block and the compression assembly.

[0035] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic cross-sectional structure diagram of the auxiliary tooling for installing a differential provided in Embodiment 1 or Embodiment 2 of the present application is shown;

[0039] Figure 2 A schematic diagram of the structure of the positioning top block provided in the first embodiment of the present application is shown;

[0040] Figure 3 A schematic diagram of the cross-sectional structure of the upper top block and the lower top block provided in the first embodiment of the present application without displacement is shown;

[0041] Figure 4 A schematic cross-sectional structure diagram of the upper top block and the lower top block provided in the first embodiment of the present application in which displacement occurs is shown;

[0042] Figure 5 A schematic diagram of the structure of the upper top block provided in the first embodiment of the present application is shown;

[0043] Figure 6 A schematic cross-sectional structure diagram of a compression assembly provided in Embodiment 1 of the present application is shown;

[0044] Figure 7 A schematic diagram of the top view of the pull rod provided in the first embodiment of the present application is shown;

[0045] Figure 8 Shows Figure 7 Schematic diagram of the cross-sectional structure along the middle line A-A';

[0046] Fig. 9 A schematic diagram of the structure of a positioning base provided in Embodiment 1 of the present application is shown;

[0047] Fig.10 A schematic cross-sectional structure diagram of a positioning base provided in Embodiment 1 of the present application is shown;

[0048] Fig.11 A schematic diagram showing the structure of the differential housing and the second half-shaft gear set provided in the first embodiment of the present application being fixed on the positioning base;

[0049] Fig.12 Shows Fig.11 Schematic diagram of the cross-section structure in ;

[0050] Fig.13 A schematic diagram showing the structure of the positioning top block provided in the first embodiment of the present application being installed on the second half-shaft gear set;

[0051] Fig.14 Shows Fig.13 Schematic diagram of the cross-section structure in ;

[0052] Fig.15 A schematic diagram showing the structure of the first half-shaft gear set provided in the first embodiment of the present application being installed on the positioning top block;

[0053] Fig.16 Shows Fig.15 Schematic diagram of the cross-section structure in ;

[0054] Fig.17 A schematic diagram showing the structure of a compression assembly provided in the first embodiment of the present application installed in a positioning top block;

[0055] Fig.18 Shows Fig.17 Schematic diagram of the cross-section structure in ;

[0056] Fig.19 It shows a schematic diagram of the structure of the gripping portion pressed downwards provided in the first embodiment of the present application;

[0057] Fig. 20 Shows Fig.19 Schematic diagram of the cross-section structure in ;

[0058] Fig.21 It shows a schematic diagram of the structure of installing the first planetary gear set and the second planetary gear set provided in the first embodiment of the present application;

[0059] Fig. 22 Shows Fig.21 Schematic diagram of the cross-section structure in ;

[0060] Fig.23 A schematic diagram of the structure of the rotating first planetary gear set and the second planetary gear set provided in the first embodiment of the present application is shown;

[0061] Fig.24 It shows a schematic diagram of the structure of removing the compression assembly and positioning the top block provided in the first or second embodiment of the present application;

[0062] Fig.25 Shows Fig.24 Schematic diagram of the cross-section structure in.

[0063] Description of reference numerals:

[0064] 100, auxiliary tooling; 110, positioning top block; 111, upper top block; 1110, waist round hole; 1111, positioning section; 1112, insertion hole; 1113, abutment groove; 112, lower top block; 1120, cylindrical boss; 113, moving part; 114, moving chamber; 120, compression assembly; 121, top rod; 122, hook block; 123, pull rod; 1230, through hole ; 1231, limit block; 1232, spline; 124, grip; 1240, grip portion; 1241, fixing portion; 125, telescopic rod; 126, inclined pull block; 127, first fixing member; 128, second fixing member; 130, positioning base; 131, base body; 132, positioning column; 1320, first positioning portion; 1321, second positioning portion; 133, anti-rotation column;

[0065] 200, differential; 210, differential case; 220a, first half-shaft gear set; 220b, second half-shaft gear set; 221, wave washer; 222, flat washer; 223, half-shaft gears; 230a, first planetary gear set; 230b, second planetary gear set; 231, spherical washer; 232, planetary gears; 240, planetary gear shaft. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0067] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the present application.

[0070] Embodiment 1

[0071] See also Figure 1As shown, embodiment 1 of the present application provides an auxiliary tooling 100, which can be used for the assembly of a differential 200, wherein the differential 200 includes a differential housing 210, a first half-shaft gear set 220a, a second half-shaft gear set 220b, a first planetary gear set 230a, a second planetary gear set 230b and a planetary gear shaft 240, wherein the first half-shaft gear set 220a and the second half-shaft gear set 220b are symmetrical to each other and are both arranged in the differential housing 210, and the first half-shaft gear set 220a and the second half-shaft gear set 220b are arranged in sequence in the vertical direction, and the first half-shaft gear set 220a and the second half-shaft gear set 220b have the same structure and shape; for example, the first half-shaft gear set 220a and the second half-shaft gear set 220b both include a wave washer 221, a flat washer 222 and a half-shaft gear 223. The first planetary gear set 230a and the second planetary gear set 230b are symmetrical to each other and are respectively located on the left and right sides of the differential case 210. The first planetary gear set 230a and the second planetary gear set 230b have the same structure and shape; for example, the first planetary gear set 230a and the second planetary gear set 230b both include a spherical gasket 231 and a planetary gear 232. During assembly, the planetary gear 232 and the side gear 223 are installed in gear alignment. After the planetary gear 232 and the side gear 223 are installed in place, the planetary gear shaft 240 is inserted between the side gear 223 and the planetary gear 232 to fix them.

[0072] In the embodiment of the present application, the auxiliary tooling 100 can improve the assembly accuracy and efficiency of the wave washer 221 of the first half-shaft gear set 220a and the second half-shaft gear set 220b. The half-shaft gear 223, the wave washer 221 and the flat gasket 222 are assembled in place at one time to avoid repeated disassembly and assembly, thereby improving the assembly accuracy and efficiency of the differential 200 and enhancing the convenience of the assembly operation of the differential 200.

[0073] Among them, see Figure 1 As shown, the auxiliary tooling 100 includes:

[0074] The positioning top block 110 is arranged between the first half-shaft gear set 220a and the second half-shaft gear set 220b. The positioning top block 110 includes an upper top block 111 and a lower top block 112 that can slide against each other. The upper top block 111 abuts against the first half-shaft gear set 220a, and the lower top block 112 abuts against the second half-shaft gear set 220b.

[0075] The compression assembly 120, the part of which is inserted into the differential housing 210 and connected to the positioning top block 110, the upper top block 111 and the lower top block 112 can respectively apply extrusion force to the first half-shaft gear set 220a and the second half-shaft gear set 220b during the movement of the compression assembly 120, so as to compress the first half-shaft gear set 220a and the second half-shaft gear set 220b, thereby improving the assembly accuracy and assembly efficiency of the differential 200, so as to enhance the convenience of the assembly operation of the differential 200.

[0076] In the examples of this application, please continue to refer to Figure 1 As shown, the first side shaft gear set 220a is located in the upper half of the differential case 210, and the second side shaft gear set 220b is located in the lower half of the differential case 210. The wave washer 221, the plane washer 222 and the side shaft gear 223 in the first side shaft gear set 220a are arranged in sequence in the vertical direction. The wave washer 221 in the first side shaft gear set 220a abuts against the upper top groove of the differential case 210, and the side shaft gear 223 in the first side shaft gear set 220a abuts against the upper top block 111; the wave washer 221, the plane washer 222 and the side shaft gear 223 in the second side shaft gear set 220b are arranged in sequence in the vertical direction. The wave washer 221 in the second side shaft gear set 220b abuts against the lower bottom groove of the differential case 210, and the side shaft gear 223 in the second side shaft gear set 220b abuts against the side of the lower top block 112 away from the upper top block 111.

[0077] It can be understood that, when the upper top block 111 moves toward the first side gear set 220a, the upper top block 111 gradually applies a pressing force to the side gear 223, the plane gasket 222 and the wave washer 221 in the first side gear set 220a, and compresses the wave washer 221 and the plane gasket 222 to the assembly thickness. Correspondingly, when the lower top block 112 moves toward the second side gear set 220b, the lower top block 112 gradually applies a pressing force to the side gear 223, the plane gasket 222 and the wave washer 221 in the second side gear set 220b, and compresses the wave washer 221 and the plane gasket 222 to the assembly thickness.

[0078] That is to say, the upper top block 111 and the lower top block 112 in the positioning top block 110 are used to press-fit the half-shaft gear 223, the flat gasket 222 and the wave washer 221 in the first half-shaft gear set 220a and the half-shaft gear 223, the flat gasket 222 and the wave washer 221 in the second half-shaft gear set 220b, respectively. This can improve the assembly efficiency and assembly accuracy of the differential 200. The half-shaft gear 223, the flat gasket 222 and the wave washer 221 can be assembled in place at one time, avoiding repeated disassembly and assembly, thereby improving the convenience of operation.

[0079] It is worth mentioning that the upper top block 111 and the lower top block 112 cannot compress the wave washer 221 too tightly to ensure that the side gear 223 of the first side gear set 220a and the side gear 223 of the second side gear set 220b can rotate smoothly.

[0080] In the examples of this application, see Figures 2 to 4 As shown, the lower top block 112 is combined with the upper top block 111 by insertion. Wherein, the outer sides of the upper top block 111 and the lower top block 112 are respectively provided with a round hole 1110 and a threaded hole, and when the lower top block 112 is inserted into the upper top block 111, the round hole 1110 of this upper top block 111 corresponds to the threaded hole of the lower top block 112. The positioning top block 110 also includes a moving member 113, which is inserted into the round hole 1110 of this upper top block 111 and the threaded hole of the lower top block 112 in sequence, and is threadedly connected with the threaded hole of the lower top block 112, and this moving member 113 can move with the lower top block 112. That is: the moving member 113 can move within the round hole 1110 in the upper top block 111 when the lower top block 112 moves. In other words, this moving member 113 can slide within the round hole 1110 of the upper top block 111. The upper top block 111 and the lower top block 112 can be connected by the moving member 113 , and the problem of the upper top block 111 and the lower top block 112 falling off during the sliding process can also be avoided.

[0081] In order to ensure the sliding stability of the upper top block 111 and the lower top block 112, the above-mentioned waisted holes 1110 are provided on the opposite sides of the upper top block 111, and the above-mentioned threaded holes are provided on the opposite sides of the lower top block 112, and the threaded holes on the opposite sides are threadedly connected with moving parts 113 to prevent the upper top block 111 and the lower top block 112 from falling off.

[0082] It is worth mentioning that the length of the oval hole 1110 can be set according to the compression thickness of the wave washer 221. The thicker the compression thickness, the longer the length of the oval hole 1110; the thinner the compression thickness, the shorter the length of the oval hole 1110.

[0083] In the examples of this application, see Figure 2 and Figure 4 As shown, the upper top block 111 is square in shape as a whole, and its four corners are chamfered, and the end surface of the upper top block 111 away from the lower top block 112 is protruding with a cylindrical positioning section 1111, and the cylindrical positioning section 1111 is used to position the half-shaft gear 223 in the first half-shaft gear set 220a and the upper top block 111 to determine whether the half-shaft gear 223 in the first half-shaft gear set 220a and the upper top block 111 are assembled.

[0084] The lower top block 112 is cylindrical in shape as a whole, and its interior is a hollow structure. The upper end surface of the lower top block 112 is open, and a cylindrical boss 1120 is provided at the lower end of the lower top block 112 for positioning with the half-shaft gear 223 in the second half-shaft gear set 220b.

[0085] Through the cylindrical positioning section 1111 and the cylindrical boss 1120, it can be ensured that the positioning top block 110 can rotate smoothly in the differential housing 210 with the first half-shaft gear set 220a and the second half-shaft gear set 220b after compression, so as to install the subsequent first planetary gear set 230a and the second planetary gear set 230b. After assembly, it can be quickly taken out from the inside of the differential 200.

[0086] In addition, when the moving member 113 is tightened to the threaded hole of the lower top block 112, a certain gap is left between the moving member 113 and the upper top block 111 to ensure relative sliding between the upper top block 111 and the lower top block 112. In order to ensure the tightening effect, when tightening the moving member 113, a thread tightening glue can be applied on the thread of the moving member 113 to prevent loosening.

[0087] In some embodiments, in order to push the upper top block 111 and the lower top block 112 to move in different directions, the compression assembly 120 may include a first connection portion and a second connection portion, wherein the first connection portion is connected to the upper top block 111, and the second connection portion is connected to the lower top block 112. When the first connection portion and the second connection portion move in opposite directions, the first connection portion drives the upper top block 111 to move in the direction of the first side shaft gear set 220a, and the second connection portion drives the lower top block 112 to move in the direction of the second side shaft gear set 220b, so as to compress the wave washers 221 in the first side shaft gear set 220a and the second side shaft gear set 220b.

[0088] In the examples of this application, see Figure 1 and Figure 4 As shown, in order to push the upper top block 111 and the lower top block 112 to move in different directions, a movable chamber 114 is formed between the upper top block 111 and the lower top block 112, and an insertion hole 1112 is provided on the positioning top block 110. The insertion hole 1112 connects the movable chamber 114 with the outside, and the compression assembly 120 is inserted into the movable chamber 114 through the insertion hole 1112. The compression assembly 120 can move in the movable chamber 114 to drive the upper top block 111 to move toward the direction close to the first half-shaft gear set 220a, and drive the lower top block 112 to move toward the direction close to the second half-shaft gear set 220b, thereby compressing the wave washers 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b, thereby improving the assembly efficiency.

[0089] It is understandable that other structures may be used to drive the upper top block 111 and the lower top block 112 to move in opposite directions, and the relevant structure only needs to be able to drive the upper top block 111 and the lower top block 112 to move in opposite directions.

[0090] In the embodiment of the present application, the compression assembly 120 can be inserted into the movable chamber 114 from the upper top block 111 , or can be inserted into the movable chamber 114 from the lower top block 112 .

[0091] In the examples of this application, see Figure 1 and Figure 5 As shown, the compression assembly 120 is inserted from the upper top block 111 into the moving chamber 114. The upper top block 111 includes an abutting groove 1113 and an insertion hole 1112. The insertion hole 1112 can adopt a structure similar to a waist hole. The abutting groove 1113 is arranged on one side of the upper top block 111 close to the lower top block 112, that is, the abutting groove 1113 is arranged on the inner side of the upper top block 111 and on the opposite sides of the insertion hole 1112, so as to achieve the purpose of smoothly moving the upper top block 111.

[0092] See also Figure 1 and Figure 6 As shown, the compression assembly 120 includes a push rod 121 and a hook block 122. When the compression assembly 120 is inserted into the movable chamber 114, the push rod 121 and the hook block 122 are arranged in the movable chamber 114. When the compression assembly 120 moves in the movable chamber 114, the push rod 121 pushes the lower push block 112 to move toward the direction close to the second half-shaft gear set 220b, thereby compressing the wave washer 221 in the second half-shaft gear set 220b; the hook block 122 contacts the abutment groove 1113. During the movement of the compression assembly 120, the hook block 122 drives the upper push block 111 to move toward the direction close to the first half-shaft gear set 220a, thereby compressing the wave washer 221 in the first half-shaft gear set 220a. The wave washers 221 in the second half-shaft gear set 220 b and the first half-shaft gear set 220 a are compressed simultaneously by the push rod 121 and the hook block 122 , thereby improving the convenience of operation and the assembly efficiency and assembly accuracy.

[0093] It is worth mentioning that in order to ensure that the hook block 122 and the push rod 121 can be inserted into the movable chamber 114, the opening size of the insertion hole 1112 is larger than the size of the hook block 122, so that the hook block 122 can be inserted more conveniently.

[0094] In addition, the size of the abutting grooves 1113 on the opposite sides is larger than that of the hook block 122, so that the hook block 122 can be inserted into the abutting grooves 1113 and abut against the abutting grooves 1113. The abutting grooves 1113 can effectively limit the hook block 122 to prevent the hook block 122 from falling off from the upper block 111 when the hook block 122 is rotated.

[0095] In order to realize the movement of the top rod 121 and the hook block 122 in different directions, the compression assembly 120 further includes a pull rod 123, a gripping member 124 and a telescopic rod 125. Figure 6 It is understandable that the compression assembly 120 may also adopt other structures that can drive the push rod 121 and the hook block 122 to move in different directions.

[0096] In the examples of this application, see Figure 7 and Figure 8 As shown, the pull rod 123 is cylindrical in shape as a whole, and is provided with a through hole 1230 penetrating along its axial direction, that is, the interior of the pull rod 123 is a hollow structure. The interior of the pull rod 123 is provided with the push rod 121, and the push rod 121 can slide inside the pull rod 123, thereby pushing the lower push block 112 to move toward the direction of the second half-shaft gear set 220b. Two semicircular hook blocks 122 are protruding from the outside of the bottom of the pull rod 123, and the two hook blocks 122 are arranged opposite to each other in the circumferential direction of the pull rod 123. The hook blocks 122 can be integrally formed with the pull rod 123. When the hook blocks 122 are placed in the moving chamber 114, the two hook blocks 122 are respectively in contact with the abutment grooves 1113 located on the opposite sides of the insertion hole 1112, so as to drive the upper push block 111 to move toward the direction of the first half-shaft gear set 220a.

[0097] In the embodiments of the present application, Figure 6 and Fig.21 As shown, the gripping member 124 includes a gripping portion 1240 and a fixing portion 1241, wherein the gripping portion 1240 is connected to the fixing portion 1241 via the inclined pull block 126, and the fixing portion 1241 is connected to the through hole 1230. When the gripping portion 1240 is pressed downward, the fixing portion 1241 moves vertically upward under the action of the inclined pull block 126, thereby driving the pull rod 123 to move upward.

[0098] In the embodiment of the present application, the telescopic rod 125 is connected to the gripping portion 1240. The telescopic rod 125 passes through the fixing portion 1241 to be inserted into the through hole 1230. The telescopic rod 125 disposed in the through hole 1230 is connected to the ejector rod 121 disposed in the through hole 1230. When the gripping portion 1240 is pressed downward, the telescopic rod 125 will move vertically downward, thereby driving the ejector rod 121 to move downward. By pressing the gripping portion 1240 downward, the ejector rod 121 and the hook block 122 can be driven to move downward and upward, thereby driving the lower ejector block 112 and the upper ejector block 111 to move toward the second half-shaft gear set 220b and the first half-shaft gear set 220a, respectively, to compress the wave washers 221 in the second half-shaft gear set 220b and the first half-shaft gear set 220a.

[0099] That is to say, when the holding portion 1240 is pressed downward in the direction of the second half-shaft gear set 220b, the holding portion 1240 drives the telescopic rod 125 to move in the direction of the second half-shaft gear set 220b, and then drives the push rod 121 to push the lower push block 112 to move in the direction of the second half-shaft gear set 220b; the fixing portion 1241 drives the pull rod 123 to move in the direction of the first half-shaft gear set 220a, and then drives the hook block 122 on the outside of the pull rod 123 to abut against the abutment groove 1113, so as to drive the upper push block 111 to move in the direction of the first half-shaft gear set 220a.

[0100] It is worth mentioning that the lower half of the fixing portion 1241 is provided with an external thread, and the inner wall of the upper end of the through hole 1230 is provided with an internal thread, and the fixing portion 1241 is threadedly connected to the part of the through hole 1230 provided with the internal thread. In order to improve the tightness of the connection between the fixing portion 1241 and the pull rod 123, the auxiliary tooling 100 further includes a first fixing member 127, which is fastened to the outer side of the fixing portion 1241 and is used to fix the fixing portion 1241 and the pull rod 123.

[0101] In addition, in order to further improve the fixing effect of the fixing portion 1241 and the pull rod 123, thread fastening glue may be applied at the position where the first fixing member 127 is connected to the fixing portion 1241 to enhance the anti-loosening effect.

[0102] It is understandable that by adjusting the tightening depth of the fixing portion 1241 in the through hole 1230 , the hook block 122 can be adjusted to the most suitable insertion depth.

[0103] In the embodiment of the present application, the outer side of the upper half of the pull rod 123 is knurled to facilitate taking. A stop block 1231 is provided in the middle part of the pull rod 123. The stop block 1231 and the hook block 122 are sequentially arranged at intervals in the axial direction of the pull rod 123. The stop block 1231 is arranged on the side of the hook block 122 away from the positioning top block 110. When the compression assembly 120 is inserted into the moving chamber 114, the stop block 1231 abuts against the upper end surface of the differential housing 210, indicating that the compression assembly 120 is inserted in place, thereby improving the convenience of use.

[0104] In the examples of this application, see Figure 8 As shown, the lower part of the pull rod 123 is provided with a spline 1232, and the spline 1232 of the pull rod 123 cooperates with the internal spline of the half-shaft gear 223 in the first half-shaft gear set 220a. When the pull rod 123 is rotated, the half-shaft gear 223 in the first half-shaft gear set 220a can be driven to rotate, which is more conducive to the subsequent assembly process.

[0105] In the embodiment of the present application, the push rod 121 may adopt a three-section cylindrical structure, and its upper end is a threaded structure, that is, an external thread is provided on the upper end of the push rod 121. The middle part of the push rod 121 is larger than the upper and lower parts.

[0106] In the embodiment of the present application, the lower part of the telescopic rod 125 is provided with an internal thread, which matches the external thread of the top rod 121, that is, the telescopic rod 125 is threadedly connected with the top rod 121. In addition, the auxiliary tooling 100 further includes at least two second fixing members 128, which are arranged in sequence in the axial direction of the top rod 121, and the second fixing members 128 are tightened and fixed at the connection between the top rod 121 and the telescopic rod 125 to strengthen the connection tightness between the top rod 121 and the telescopic rod 125.

[0107] In the examples of this application, see Figure 6 As shown, the auxiliary tooling 100 includes two second fixing members 128 , and the two second fixing members 128 are sequentially arranged in the axial direction of the ejector rod 121 .

[0108] It is worth mentioning that by adjusting the screwing depth between the telescopic rod 125 and the top rod 121, the compression amount and the clamping force of the corrugated washer 221 can be adjusted to a suitable size, and the suitable clamping force can ensure smoother assembly in the subsequent process.

[0109] In the examples of this application, see Fig. 9 and Fig.10 As shown, the auxiliary tooling 100 also includes a positioning base 130, which includes a base body 131, a positioning column 132 and an anti-rotation column 133. The positioning column 132 and the anti-rotation column 133 are both arranged on the base body 131, and the positioning column 132 and the anti-rotation column 133 are arranged at an interval.

[0110] In the examples of this application, please continue to refer to Fig. 9 and Fig.10 The positioning column 132 and the anti-rotation column 133 can both adopt a cylindrical structure; the positioning column 132 includes a first positioning portion 1320 and a second positioning portion 1321 connected to each other, the first positioning portion 1320 is arranged on the side of the second positioning portion 1321 away from the base body 131, and the first positioning portion 1320 is inserted into the second side gear set 220b, which is mainly used to fix the side gear 223 in the second side gear set 220b; the second positioning portion 1321 is inserted into the differential housing 210 to position the differential housing 210. The anti-rotation column 133 is inserted into the differential housing 210, and can be used to position the circumferential direction of the differential housing 210 to prevent the differential housing 210 from rotating.

[0111] The specific process of installing the differential 200 using the auxiliary tooling 100 is as follows:

[0112] In the first step, the differential case 210 and the second side gear set 220 b are installed.

[0113] See also Fig.11 and Fig.12 As shown, the differential case 210 is installed on the positioning base 130, and the lower end surface of the differential case 210 is flush with the upper surface of the base body 131. At this time, the differential case 210 is respectively inserted into the positioning column 132 and the anti-rotation column 133 to prevent the differential case 210 from rotating and shifting. The second positioning portion 1321 positions the differential case 210, and the anti-rotation column 133 is deeply inserted into the pin hole of the differential case 210. Then the wave washer 221, the plane washer 222 and the side gear 223 in the second side gear set 220b are installed in place in sequence, that is, the wave washer 221 is clamped in the groove of the lower bottom wall of the differential case 210, the side gear 223 is positioned by the first positioning portion 1320, and the plane washer 222 is located between the side gear 223 and the wave washer 221.

[0114] It should be noted that when the wave washer 221 is clamped in the groove of the differential housing 210 , the wave washer 221 is not compressed but in an expanded state. For example, the thickness of the wave washer 221 is 4 mm. At this time, the wave washer 221 holds up the half-shaft gear 223 and the flat gasket 222 .

[0115] The second step is to install the positioning top block 110.

[0116] See also Fig.13 and Fig.14 As shown, the lower top block 112 of the positioning top block 110 is installed on the half-shaft gear 223 of the second half-shaft gear set 220b, and the cylindrical boss 1120 of the lower top block 112 is clamped on the inner hole of the half-shaft gear 223 of the second half-shaft gear set 220b to position the half-shaft gear 223 of the second half-shaft gear set 220b.

[0117] The third step is to install the first side shaft gear set 220a.

[0118] See also Fig.15 and Fig.16 As shown, the half-shaft gear 223 in the first half-shaft gear set 220a is connected to the cylindrical positioning section 1111 of the upper top block 111 of the positioning top block 110, the half-shaft gear 223 in the first half-shaft gear set 220a is positioned with the upper top block 111, and the wave washer 221 is positioned with the upper groove of the differential case 210.

[0119] The fourth step is to install the compression assembly 120 .

[0120] See also Fig.17 and Fig.18As shown, before partially inserting the compression assembly 120 into the differential case 210 and the movable chamber 114 of the positioning top block 110, the tie rod 123 is rotated left and right to make the spline 1232 on the outside of the tie rod 123 align with the internal spline in the side gear 223 in the first side gear set 220a; then, the hook block 122 at the lower end of the tie rod 123 is aligned with the insertion hole 1112 of the upper top block 111 and inserted into the movable chamber 114. After insertion, the tie rod 123 is rotated 45° to 90° along its circumferential direction to rotate the hook block 122 to the range of the abutment groove 1113. When the stop block 1231 on the tie rod 123 is in close contact with the upper end surface of the differential case 210, it means that the compression assembly 120 has been inserted into place.

[0121] It should be noted that when the auxiliary tooling 100 is used for the first time, it is necessary to adjust the tightening depth of the fixing portion 1241 and the through hole 1230 and adjust the hook block 122 to a suitable insertion depth, that is, to be in the movable chamber 114 without interfering with the upper top block 111 and the lower top block 112 .

[0122] The fifth step is to press-fit the wave washers 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0123] See also Fig.19 and Fig. 20 As shown, the gripping part 1240 is manually rotated to rotate about 90° in the vertical direction, and the telescopic rod 125 drives the push rod 121 to move toward the direction close to the second half-shaft gear set 220b, so that the push rod 121 extends to support the lower push block 112, and the lower push block 112 moves downward to support the half-shaft gear 223 and the wave washer 221 in the second half-shaft gear set 220b. At the same time, the fixing part 1241 drives the pull rod 123 to move upward, and at this time the hook block 122 abuts against the abutting groove 1113, and the hook block 122 hooks the upper push block 111 and pulls it upward, and the upper push block 111 gradually moves toward the direction close to the first half-shaft gear set 220a, so that the upper push block 111 upwardly supports the half-shaft gear 223 and the wave washer 221 in the first half-shaft gear set 220a, so that the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b are compressed.

[0124] It should be noted that after the gripping portion 1240 is rotated vertically to the desired position, the gripping portion 1240 has an obvious damping feeling and a certain holding force.

[0125] In addition, when the auxiliary tool 100 is used for the first time, the depth of the push rod 121 screwed into the telescopic rod 125 needs to be adjusted, and the compression stroke of the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b needs to be adjusted to a suitable level, that is, the wave washer 221 is compressed to the assembly thickness, for example, the thickness of the original wave washer 221 is compressed from 4 mm to 2 mm. At the same time, the wave washer 221 cannot be compressed too tight to ensure that the half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b can rotate smoothly.

[0126] The sixth step is to install the first planetary gear set 230a and the second planetary gear set 230b.

[0127] See also Fig.21 and Fig. 22 As shown, the first planetary gear set 230a and the second planetary gear set 230b are symmetrically installed from the left and right notches of the differential housing 210, and the planetary gears 232 in the first planetary gear set 230a and the second planetary gear set 230b need to be installed in alignment with the half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0128] It can be understood that the planetary gears 232 in the first planetary gear set 230a are all coupled to the pairs of half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b; the planetary gears 232 in the second planetary gear set 230b are all coupled to the pairs of half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0129] The seventh step is to rotate the first planetary gear set 230a and the second planetary gear set 230b.

[0130] See also Figure 1 and Fig.23 As shown, the first planetary gear set 230a and the second planetary gear set 230b located on the left and right sides of the differential case 210 are manually supported and rotated around the side gears 223 of the first side gear set 220a and the second side gear set 220b, and when the planetary gear 232 partially enters the differential case 210, the holding portion 1240 is held on one side to rotate and adjust the position of the planetary gear 232 along the circumferential direction, and the planetary gear shaft 240 is used for trial assembly on the other side to confirm that the center hole of the planetary gear 232 is installed to align with the corresponding position on the differential case 210. During the rotation, the spline 1232 on the tie rod 123 drives the side gear 223 in the first side gear set 220a to rotate, and the side gear 223 in the first side gear set 220a drives the planetary gear 232 and the spherical gasket 231 in the first planetary gear set 230a and the second planetary gear set 230b to rotate.

[0131] It is worth mentioning that after completing this step, the main parts of the differential 200 such as the internal planetary gear 232 and the half-shaft gear 223 have been installed in place, and the wave washer 221 is also in an installed state.

[0132] Step 8: remove the compression assembly 120 and the positioning top block 110, and install the planetary gear shaft 240.

[0133] See also Fig.24 and Fig.25 As shown, first, the holding portion 1240 is rotated vertically to reset so that the upper top block 111 and the lower top block 112 return to their original state, and then the compression assembly 120 is rotated and taken out upward along the circumferential direction, and then the positioning top block 110 located between the first half-shaft gear set 220a and the second half-shaft gear set 220b is taken out; finally, the planetary gear shaft 240 is inserted.

[0134] Through the above eight steps, the installation of the differential 200 is completed. The auxiliary tooling 100 can be used to compress and install the wave washers 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b by rotating and pressing once, which is more convenient. And the clamping force and stroke are just right each time, which is convenient for the next process operation; no power supply or compressed air is required, the pure mechanical structure is suitable for different application scenarios; this auxiliary tooling 100 integrates the functions of compressing the wave washers 221 and rotating the half-shaft gears 223, which is conducive to the assembly of the subsequent process.

[0135] That is to say, the auxiliary tool 100 can improve the assembly efficiency of the differential 200, so that small parts such as the side gear 223 and the wave washer 221 can be assembled in place at one time, avoiding repeated disassembly and assembly, and improving assembly accuracy; the gripping part 1240 generates compression force to reduce the labor intensity of the operator. In addition, the auxiliary tool 100 improves the convenience of operation by integrating the function of rotating the side gear 223.

[0136] Embodiment 2

[0137] The second embodiment of the present application provides a vehicle, which includes a differential 200 assembled using the auxiliary tooling 100 in the first embodiment, such as Fig.24 The differential 200 assembled by using the auxiliary tooling 100 in the first embodiment has the advantages of high precision and fast assembly progress, and can further reduce the noise caused by the differential 200.

[0138] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0139] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. An auxiliary tooling, the auxiliary tooling is used for assembling a differential, the differential comprising a differential housing, a first side shaft gear set and a second side shaft gear set, the first side shaft gear set and the second side shaft gear set are arranged in the differential housing, characterized in that: The auxiliary tooling includes: A positioning top block is provided between the first side shaft gear set and the second side shaft gear set, the positioning top block comprises an upper top block and a lower top block which can slide against each other, the upper top block abuts against the first side shaft gear set, and the lower top block abuts against the second side shaft gear set; A compression assembly, a portion of the compression assembly inserted into the differential housing and connected to the positioning top block; Wherein, the upper push block and the lower push block can respectively apply extrusion force to the first half-shaft gear set and the second half-shaft gear set during the movement of the compression assembly to compress the first half-shaft gear set and the second half-shaft gear set.

2. The auxiliary tooling according to claim 1, characterized in that: The upper top block and the lower top block form a moving chamber; The positioning top block includes an insertion hole, and the compression assembly is inserted into the movable chamber through the insertion hole. The compression assembly can move in the movable chamber to drive the upper top block to move toward the direction close to the first half-shaft gear set, and drive the lower top block to move toward the direction close to the second half-shaft gear set.

3. The auxiliary tooling according to claim 2, characterized in that: The lower top block is inserted into the upper top block, the outer side of the upper top block is provided with a waist round hole, the outer side of the lower top block is provided with a threaded hole, and the waist round hole of the upper top block corresponds to the threaded hole of the lower top block; The positioning top block also includes a moving piece, which is inserted into the oval hole of the upper top block and the threaded hole of the lower top block in sequence, and the moving piece can slide in the oval hole of the upper top block.

4. The auxiliary tooling according to claim 2, characterized in that: The upper top block comprises an abutment groove and the insertion hole, wherein the abutment groove is arranged at two opposite sides of the insertion hole; The compression assembly comprises a push rod and a hook block, and when the compression assembly is inserted into the movable chamber, the push rod and the hook block are arranged in the movable chamber; When the compression assembly moves, the push rod pushes the lower push block to move toward the direction close to the second half-shaft gear set, the hook block contacts the abutment groove, and drives the upper push block to move toward the direction close to the first half-shaft gear set.

5. The auxiliary tooling according to claim 4, characterized in that: The compression component also includes: A pull rod, wherein the pull rod is provided with a through hole penetrating along the axial direction thereof, the push rod is arranged in the through hole, and the hook block is arranged on the outer side of the pull rod; A gripping member, comprising a gripping portion and a fixing portion, wherein the gripping portion is connected to the fixing portion via an inclined pull block, and the fixing portion is connected to the through hole; A telescopic rod, the telescopic rod is connected to the gripping portion, the telescopic rod passes through the fixing portion, and a portion of the telescopic rod is disposed in the through hole, and the telescopic rod disposed in the through hole is connected to the top rod disposed in the through hole; Wherein, when the holding portion is pressed downward toward the direction of the second side shaft gear set: The holding portion drives the telescopic rod to move toward the direction of the second half-shaft gear set, thereby driving the push rod to push the lower push block to move toward the direction of the second half-shaft gear set; The fixing portion drives the pull rod to move toward the first half-shaft gear set, thereby driving the hook block on the outside of the pull rod to abut against the abutment groove, so as to drive the upper push block to move toward the first half-shaft gear set.

6. The auxiliary tooling according to claim 5, characterized in that: The fixing portion is threadedly connected to the through hole, and the auxiliary tooling further includes a first fixing member, which is used to fasten the fixing portion and the pull rod; The telescopic rod is threadedly connected to the push rod, and the auxiliary tooling further includes at least two second fixing members, which are sleeved on the outside of the telescopic rod and the push rod.

7. The auxiliary tooling according to claim 5, characterized in that: The pull rod further comprises a limit block, wherein the limit block and the hook block are sequentially arranged at intervals in the axial direction of the pull rod, and the limit block is arranged on a side of the hook block away from the positioning top block; When the compression assembly is inserted into the moving chamber, the stop block abuts against the end surface of the differential housing.

8. The auxiliary tooling according to claim 5, characterized in that: The pull rod is also provided with a spline, and the spline matches the internal spline in the first half-shaft gear set. When the pull rod rotates, the first half-shaft gear set can be driven to rotate.

9. The auxiliary tooling according to claim 1, characterized in that: The auxiliary tooling also includes: A positioning base, comprising a base body, a positioning column and an anti-rotation column, wherein the positioning column and the anti-rotation column are both arranged on the base body, and the positioning column and the anti-rotation column are arranged at intervals; The positioning column comprises a first positioning portion and a second positioning portion connected to each other, the first positioning portion is arranged at a side of the second positioning portion away from the base body, the first positioning portion is inserted into the second side shaft gear set, and the second positioning portion is inserted into the differential housing; The anti-rotation column is inserted in the differential housing.

10. A vehicle, characterized in that: It comprises a differential assembled using the auxiliary tooling described in any one of claims 1 to 9.

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