Auxiliary tool and vehicle

Abstract

The application belongs to the technical field of differential assembly, and particularly relates to an auxiliary tool and a vehicle, the auxiliary tool comprising: a positioning top block arranged between a first half axle gear set and a second half axle gear set, the positioning top block comprising upper and lower top blocks capable of sliding relative to each other, the upper top block abutting against the first half axle gear set, and the lower top block abutting against the second half axle gear set; and a compression assembly, the compression assembly being inserted into a part of a differential housing and connected with the positioning top block; wherein the upper and lower top blocks can respectively apply extrusion force to the first half axle gear set and the second half axle gear set during movement of the compression assembly, so as to compress the first half axle gear set and the second half axle gear set. The application can improve the assembly progress and assembly precision of the differential, and in addition, the positioning top block and the compression assembly can also improve the convenience in the differential assembly process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of differential assembly, and particularly relates to an auxiliary tool and a vehicle. BACKGROUND

[0002] In an automobile transmission or an electric drive system, two wave washers or arc thrust washers are often arranged between two half shaft gears and a differential housing. The wave washers are in a compressed state in the differential, and the elastic force generated by the compression of the wave washers tightly presses the half shaft gears against the differential housing, so that the differential greatly reduces the abnormal noise during vehicle driving. When the differential is assembled, a large pressure needs to be applied to the wave washers to compress them by a certain stroke, so that the half shaft gears, planetary gears and other parts can be assembled in place.

[0003] At the same time, due to the small differential assembly space and high assembly precision requirement, the current industry mainly adopts a manual installation process, and conventional methods such as a crowbar and a threaded screw are used to compress the wave washers. However, such methods have problems such as complicated operation, inconvenient control of force and stroke, and poor actual use effect. SUMMARY

[0004] The application aims to provide an auxiliary tool and a vehicle, which can improve the assembly precision and assembly progress of a differential.

[0005] The first aspect of the application provides an auxiliary tool for assembly of a differential, the differential comprising a differential housing, a first half shaft gear set and a second half shaft gear set, the first half shaft gear set and the second half shaft gear set being arranged in the differential housing, the auxiliary tool comprising:

[0006] a positioning top block arranged between the first half shaft gear set and the second half shaft gear set, the positioning top block comprising an upper top block and a lower top block capable of sliding relative to each other, the upper top block abutting against the first half shaft gear set, and the lower top block abutting against the second half shaft gear set;

[0007] a compression assembly connected with the positioning top block and inserted into a part of the differential housing;

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

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

[0010] The positioning top block comprises an insertion hole, the compression assembly is inserted into the moving chamber through the insertion hole, and the compression assembly is movable in the moving chamber to drive the upper top block to move towards the first half axle gear set and drive the lower top block to move towards the second half axle gear set.

[0011] In an exemplary embodiment of the present application, the upper top block comprises an abutting groove and the insertion hole, and the abutting groove is arranged on opposite sides of the insertion hole.

[0012] The compression assembly comprises a top rod and a hook block, and when the compression assembly is inserted into the moving chamber, the top rod and the hook block are arranged in the moving chamber.

[0013] When the compression assembly moves, the top rod pushes the lower top block to move towards the second half axle gear set, and the hook block contacts the abutting groove to drive the upper top block to move towards the first half axle gear set.

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

[0015] A pull rod is provided with a through hole penetrating through the axial direction of the pull rod, the top rod is arranged in the through hole, and the outer side of the pull rod is provided with the hook block.

[0016] A holding piece comprises a holding portion and a fixing portion, the holding portion is connected with the fixing portion through an inclined pull block, and the fixing portion is connected with the through hole.

[0017] A telescopic rod is connected with the holding portion, the telescopic rod passes through the fixing portion, and part of the telescopic rod is arranged in the through hole, and the telescopic rod arranged in the through hole is connected with the top rod arranged in the through hole.

[0018] When the holding portion is pressed towards the second half axle gear set:

[0019] The holding portion drives the telescopic rod to move towards the second half axle gear set, and then drives the top rod to push the lower top block to move towards the second half axle gear set.

[0020] The fixing portion drives the pull rod to move towards the first half axle gear set, and then drives the hook block on the outer side of the pull rod to abut against the abutting groove to drive the upper top block to move towards the first half axle gear set.

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

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

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

[0024] The positioning top block also includes a movable component, which is sequentially inserted into the oblong hole of the upper top block and the threaded hole of the lower top block. The movable component can slide within the oblong hole of the upper top block.

[0025] In one exemplary embodiment of this application, the pull rod further includes a limiting block, the limiting block and the hook block are sequentially spaced apart in the axial direction of the pull rod, and the limiting block is located on the side of the hook block away from the positioning top block;

[0026] When the compression assembly is inserted into the movable chamber, the limiting block abuts against the end face of the differential housing.

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

[0028] In one exemplary embodiment of this application, the auxiliary tooling further includes:

[0029] The positioning base includes a base body, a positioning post, and an anti-rotation post. The positioning post and the anti-rotation post are both disposed on the base body, and the positioning post and the anti-rotation post are spaced apart.

[0030] The positioning column includes a first positioning part and a second positioning part connected to each other. The first positioning part is located on the side of the second positioning part away from the base body. The first positioning part is inserted into the second half-shaft gear set, and the second positioning part is inserted into the differential housing.

[0031] The anti-rotation post is inserted into the differential housing.

[0032] A second aspect of this application provides a vehicle including a differential assembled using the auxiliary tooling described in any of the preceding claims.

[0033] The proposed solution has the following beneficial effects:

[0034] This application includes auxiliary tooling and a vehicle. The auxiliary tooling can be used for differential assembly. It includes a positioning block and a compression assembly. The positioning block is positioned between the first and second axle gear sets of the differential. The positioning block includes an upper block and a lower block that can slide relative to each other. These upper and lower blocks abut against the first and second axle gear sets, respectively. The compression assembly is connected to the positioning block. The upper and lower blocks can move towards the first and second axle gear sets during the movement of the compression assembly, applying a compressive force to compress the first and second axle gear sets. This positioning block and compression assembly improve the assembly efficiency and accuracy of the differential, and also enhance the convenience of the differential assembly process.

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

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0038] Figure 1 This shows a cross-sectional structural diagram of the auxiliary tooling for installing the differential provided in Embodiment 1 or Embodiment 2 of this application;

[0039] Figure 2 A schematic diagram of the positioning top block provided in Embodiment 1 of this application is shown;

[0040] Figure 3 This shows a cross-sectional structural diagram of the upper and lower top blocks without displacement, as provided in Embodiment 1 of this application.

[0041] Figure 4 This paper shows a cross-sectional structural diagram of the upper and lower top blocks under displacement provided in Embodiment 1 of this application;

[0042] Figure 5 A schematic diagram of the structure of the top block provided in Embodiment 1 of this application is shown;

[0043] Figure 6 A cross-sectional structural schematic diagram of the compression component provided in Embodiment 1 of this application is shown;

[0044] Figure 7 This shows a top view of the tie rod provided in Embodiment 1 of this application;

[0045] Figure 8 It shows Figure 7 A schematic diagram of the cross-sectional structure along the middle section A-A';

[0046] Figure 9 A schematic diagram of the positioning base provided in Embodiment 1 of this application is shown;

[0047] Figure 10 This shows a cross-sectional structural diagram of the positioning base provided in Embodiment 1 of this application;

[0048] Figure 11 This shows a schematic diagram of the structure of the differential housing and the second half-shaft gear set fixed on the positioning base according to Embodiment 1 of this application;

[0049] Figure 12 It shows Figure 11 A schematic diagram of the cross-sectional structure in the middle;

[0050] Figure 13 This shows a schematic diagram of the structure of the positioning top block installed on the second half-shaft gear set according to Embodiment 1 of this application;

[0051] Figure 14 It shows Figure 13 A schematic diagram of the cross-sectional structure in the middle;

[0052] Figure 15 This shows a schematic diagram of the structure of the first half-shaft gear set provided in Embodiment 1 of this application mounted on the positioning top block;

[0053] Figure 16 It shows Figure 15 A schematic diagram of the cross-sectional structure in the middle;

[0054] Figure 17 This shows a schematic diagram of the structure of the compression component provided in Embodiment 1 of this application installed inside the positioning top block;

[0055] Figure 18 It shows Figure 17 A schematic diagram of the cross-sectional structure in the middle;

[0056] Figure 19 This paper shows a schematic diagram of the gripping part pressing downwards according to Embodiment 1 of this application;

[0057] Figure 20 It shows Figure 19 A schematic diagram of the cross-sectional structure in the middle;

[0058] Figure 21 This invention provides a schematic diagram of the structure for installing the first planetary gear set and the second planetary gear set according to Embodiment 1 of this application.

[0059] Figure 22 It shows Figure 21 A schematic diagram of the cross-sectional structure in the middle;

[0060] Figure 23 This paper shows a schematic diagram of the structure of the first and second planetary gear sets provided in Embodiment 1 of this application;

[0061] Figure 24 This illustration shows a structural schematic diagram of the dismantling compression assembly and positioning top block provided in Embodiment 1 or Embodiment 2 of this application;

[0062] Figure 25 It shows Figure 24 A cross-sectional structural diagram.

[0063] Explanation of reference numerals in the attached figures:

[0064] 100. Auxiliary tooling; 110. Positioning top block; 111. Upper top block; 1110. Oval 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, Limiting block; 1232, Spline; 124, Grip; 1240, Grip part; 1241, Fixing part; 125, Telescopic rod; 126, Diagonal pull block; 127, First fixing part; 128, Second fixing part; 130, Positioning base; 131, Base body; 132, Positioning post; 1320, First positioning part; 1321, Second positioning part; 133, Anti-rotation post;

[0065] 200, Differential; 210, Differential housing; 220a, First half-shaft gear set; 220b, Second half-shaft gear set; 221, Wave washer; 222, Flat washer; 223, Half-shaft gear; 230a, First planetary gear set; 230b, Second planetary gear set; 231, Spherical washer; 232, Planetary gear; 240, Planetary gear shaft. Detailed Implementation

[0066] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary 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 construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0070] Example 1

[0071] See Figure 1As shown, Embodiment 1 of this application provides an auxiliary tooling 100, which can be used for assembling a differential 200. 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. The first half-shaft gear set 220a and the second half-shaft gear set 220b are symmetrical to each other and are both disposed within the differential housing 210. The first half-shaft gear set 220a and the second half-shaft gear set 220b are arranged sequentially in the vertical direction. The first half-shaft gear set 220a and the second half-shaft gear set 220b have the same structure and shape. For example, both the first half-shaft gear set 220a and the second half-shaft gear set 220b 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 located on the left and right sides of the differential housing 210, respectively. The first planetary gear set 230a and the second planetary gear set 230b have the same structure and shape; for example, both the first planetary gear set 230a and the second planetary gear set 230b include a spherical washer 231 and a planetary gear 232. During assembly, the planetary gear 232 is installed in conjunction with the half-shaft gear 223. After the planetary gear set 232 and the half-shaft gear set 223 are installed in place, the planetary gear shaft 240 is inserted between the half-shaft gear set 223 and the planetary gear set 232 to fix them.

[0072] In this embodiment of the 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, wave washer 221 and flat shim 222 are assembled in one go, avoiding repeated disassembly and assembly, thereby improving the assembly accuracy and efficiency of the differential 200 and enhancing the convenience of the differential 200 assembly operation.

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

[0074] The positioning top block 110 is located 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 relative to 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] Compression assembly 120, the portion of which is inserted into differential housing 210 is connected to positioning top block 110. Upper top block 111 and lower top block 112 can apply compressive force to the first half-shaft gear set 220a and the second half-shaft gear set 220b respectively during the movement of 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 differential 200, and improving the convenience of differential 200 assembly operation.

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

[0077] Understandably, as the upper push block 111 moves toward the first half-shaft gear set 220a, it gradually applies compressive force to the half-shaft gear 223, the flat washer 222, and the corrugated washer 221 in the first half-shaft gear set 220a, compressing the corrugated washer 221 and the flat washer 222 to the assembly thickness. Correspondingly, as the lower push block 112 moves toward the second half-shaft gear set 220b, it gradually applies compressive force to the half-shaft gear 223, the flat washer 222, and the corrugated washer 221 in the second half-shaft gear set 220b, compressing the corrugated washer 221 and the flat washer 222 to the assembly thickness.

[0078] In other words, by using the upper top block 111 and the lower top block 112 in the positioning top block 110 to press the half-shaft gear 223, flat shim 222 and wave washer 221 in the first half-shaft gear set 220a and the half-shaft gear 223, flat shim 222 and wave washer 221 in the second half-shaft gear set 220b, the assembly efficiency and assembly accuracy of the differential 200 can be improved. The half-shaft gear 223, flat shim 222 and wave washer 221 can be assembled in one go, avoiding repeated disassembly and assembly, and improving the convenience of operation.

[0079] It is worth mentioning that the upper top block 111 and the lower top block 112 should not compress the wave washer 221 too tightly, so as to ensure that the half-shaft gear 223 of the first half-shaft gear set 220a and the half-shaft gear 223 of the second half-shaft gear set 220b can rotate smoothly.

[0080] In the embodiments of this application, see Figures 2 to 4 As shown, the lower top block 112 is inserted into the upper top block 111. The upper top block 111 and the lower top block 112 each have an oblong hole 1110 and a threaded hole on their outer sides, respectively. When the lower top block 112 is inserted into the upper top block 111, the oblong hole 1110 of the upper top block 111 corresponds to the threaded hole of the lower top block 112. The positioning top block 110 also includes a movable member 113, which is sequentially inserted into the oblong hole 1110 of the upper top block 111 and the threaded hole of the lower top block 112, and is threadedly connected to the threaded hole of the lower top block 112. This movable member 113 can move with the lower top block 112. That is, the movable member 113 can move within the range of the oblong hole 1110 in the upper top block 111 when the lower top block 112 moves. In other words, this movable member 113 can slide within the range of the oblong hole 1110 in the upper top block 111. This movable component 113 can connect the upper top block 111 and the lower top block 112, and can also prevent the upper top block 111 and the lower top block 112 from falling off during the sliding process.

[0081] To ensure the sliding stability of the upper top block 111 and the lower top block 112, the above-mentioned oval 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. Moving parts 113 are threadedly connected to the threaded holes on the opposite sides 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 oblong 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 oblong hole 1110; the thinner the compression thickness, the shorter the length of the oblong hole 1110.

[0083] In the embodiments of this application, see Figure 2 and Figure 4 As shown, the upper top block 111 is square in shape with chamfered corners. A cylindrical positioning section 1111 protrudes from the end face of the upper top block 111 away from the lower top block 112. This cylindrical positioning section 1111 is used to position the half-shaft gear 223 in the first half-shaft gear set 220a with the upper top block 111 to determine whether the half-shaft gear 223 in the first half-shaft gear set 220a is properly assembled with the upper top block 111.

[0084] The lower top block 112 is cylindrical in shape and has a hollow interior. The upper end face of the lower top block 112 is open, and the lower end of the lower top block 112 is provided with a cylindrical boss 1120, which is used to position the half-shaft gear 223 in the second half-shaft gear set 220b.

[0085] The cylindrical positioning section 1111 and cylindrical boss 1120 ensure that the positioning top block 110, after compression, can rotate smoothly within the differential housing 210 along with the first half-shaft gear set 220a and the second half-shaft gear set 220b, facilitating the installation of the subsequent first planetary gear set 230a and second planetary gear set 230b. After assembly, it can be quickly removed from inside the differential 200.

[0086] In addition, when the movable part 113 is tightened into the threaded hole of the lower top block 112, a certain gap is left between the movable part 113 and the upper top block 111 to ensure that relative sliding can occur between the upper top block 111 and the lower top block 112. Furthermore, to ensure the tightening effect, thread-locking adhesive can be applied to the threads of the movable part 113 when tightening it to prevent loosening.

[0087] In some embodiments, 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 connecting portion and a second connecting portion. The first connecting portion is connected to the upper top block 111, and the second connecting portion is connected to the lower top block 112. When the first connecting portion and the second connecting portion move in opposite directions, the first connecting portion drives the upper top block 111 to move towards the first half-shaft gear set 220a, and the second connecting portion drives the lower top block 112 to move towards the second half-shaft gear set 220b, so as to compress the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0088] In the embodiments 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. The positioning top block 110 is provided with an insertion hole 1112, which connects the movable chamber 114 to the outside. The compression component 120 is inserted into the movable chamber 114 through the insertion hole 1112. The compression component 120 can move in the movable chamber 114 to drive the upper top block 111 to move closer to the first half-shaft gear set 220a and drive the lower top block 112 to move closer to the second half-shaft gear set 220b, thereby compressing the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b, thereby improving assembly efficiency.

[0089] It is understandable that other structures can also be used to move the upper block 111 and the lower block 112 in opposite directions, as long as the relevant structure can move the upper block 111 and the lower block 112 in opposite directions.

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

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

[0092] See 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 located 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 closer 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 closer to the first half-shaft gear set 220a, thereby compressing the wave washer 221 in the first half-shaft gear set 220a. The push rod 121 and hook block 122 simultaneously compress the wave washer 221 in the second half-shaft gear set 220b and the first half-shaft gear set 220a, improving the ease of operation, 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] Furthermore, the dimensions of the abutment grooves 1113 on both sides are larger than the dimensions of the hook block 122, so that the hook block 122 can be inserted into the abutment grooves 1113 and abut against the abutment grooves 1113. The abutment grooves 1113 can effectively limit the hook block 122 and prevent the hook block 122 from coming off the top block 111 when rotating the hook block 122.

[0095] To enable the top rod 121 and the hook block 122 to move in different directions, this compression assembly 120 also includes a pull rod 123, a grip 124, and a telescopic rod 125, such as Figure 6 As shown. It is understood that the compression assembly 120 may also employ other structures capable of moving the push rod 121 and the hook block 122 in different directions.

[0096] In the embodiments of this application, see Figure 7 and Figure 8 As shown, the pull rod 123 is cylindrical in shape and has a through hole 1230 extending along its axis, meaning the interior of the pull rod 123 is hollow. Inside the pull rod 123 is a push rod 121, which can slide within the pull rod 123, thereby pushing the lower push block 112 towards the second half-shaft gear set 220b. Two semi-circular hook blocks 122 protrude from the outer bottom of the pull rod 123, positioned opposite each other in the circumferential direction. These hook blocks 122 can be integrally formed with the pull rod 123. When the hook blocks 122 are placed within the moving chamber 114, they contact the abutment grooves 1113 located on opposite sides of the insertion hole 1112, thereby driving the upper push block 111 towards the first half-shaft gear set 220a.

[0097] In the embodiments of this application, such as Figure 6 and Figure 21 As shown, the grip 124 includes a gripping part 1240 and a fixing part 1241. The gripping part 1240 is connected to the fixing part 1241 via a diagonal pull block 126, and the fixing part 1241 is connected to the through hole 1230. When the gripping part 1240 is pressed down, the fixing part 1241 moves vertically upward under the action of the diagonal pull block 126, which in turn drives the pull rod 123 to move upward.

[0098] In this embodiment, the telescopic rod 125 is connected to the gripping part 1240. The telescopic rod 125 passes through the aforementioned fixing part 1241 and is inserted into the through hole 1230. The telescopic rod 125 disposed in the through hole 1230 is connected to the top rod 121 disposed in the through hole 1230. When the gripping part 1240 is pressed down, the telescopic rod 125 will move vertically downward, thereby driving the top rod 121 to move downward. By pressing the gripping part 1240 downward, the top rod 121 and the hook block 122 are driven to move downward and upward, respectively, thereby driving the lower top block 112 and the upper top block 111 to move towards the second half-shaft gear set 220b and the first half-shaft gear set 220a, respectively, to compress the wave washer 221 in the second half-shaft gear set 220b and the first half-shaft gear set 220a.

[0099] In other words, when the gripping part 1240 presses down toward the second half-shaft gear set 220b, the gripping part 1240 drives the telescopic rod 125 to move toward the second half-shaft gear set 220b, which in turn drives the push rod 121 to push the lower push block 112 toward the second half-shaft gear set 220b; the fixing part 1241 drives the pull rod 123 to move toward the first half-shaft gear set 220a, which in turn drives the hook block 122 on the outside of the pull rod 123 to abut against the abutting groove 1113, so as to drive the upper push block 111 to move toward the first half-shaft gear set 220a.

[0100] It is worth mentioning that the lower half of the fixing part 1241 is provided with external threads, and the upper inner wall of the through hole 1230 is provided with internal threads. The fixing part 1241 and the part of the through hole 1230 with internal threads are threadedly connected. In order to improve the tightness of the connection between the fixing part 1241 and the pull rod 123, this auxiliary tooling 100 also includes a first fixing member 127. The first fixing member 127 is fastened to the outside of the fixing part 1241 and is used to fix the fixing part 1241 and the pull rod 123.

[0101] In addition, to further improve the fixing effect of the fixing part 1241 and the tie rod 123, thread-locking adhesive can be applied at the connection between the first fixing member 127 and the fixing part 1241 to enhance the anti-loosening effect.

[0102] Understandably, by adjusting the tightening depth of the fixing part 1241 within the through hole 1230, the hook block 122 can be adjusted to the most suitable insertion depth.

[0103] In this embodiment, the outer side of the upper half of the pull rod 123 is knurled for easy handling. A limiting block 1231 is provided in the middle part of the pull rod 123. The limiting block 1231 and the hook block 122 are arranged at intervals along the axial direction of the pull rod 123. The limiting block 1231 is located 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 limiting block 1231 abuts against the upper end surface of the differential housing 210, indicating that the compression assembly 120 is inserted in place, thus improving ease of use.

[0104] In the embodiments of this application, see Figure 8 As shown, the lower half of the pull rod 123 is provided with a spline 1232. 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, it can drive the half-shaft gear 223 in the first half-shaft gear set 220a to rotate, which is more conducive to the subsequent assembly process.

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

[0106] In this embodiment, the telescopic rod 125 has an internal thread at its lower end, which matches the external thread of the top rod 121, meaning the telescopic rod 125 and the top rod 121 are threadedly connected. Furthermore, the auxiliary tooling 100 includes at least two second fixing members 128, which are arranged sequentially along the axial direction of the top rod 121. The second fixing members 128 are tightened and fixed at the connection between the top rod 121 and the telescopic rod 125 to enhance the connection tightness between the top rod 121 and the telescopic rod 125.

[0107] In the embodiments of this application, see Figure 6 As shown, this auxiliary tooling 100 includes two second fixing members 128, which are arranged sequentially along the axial direction of the push 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 clamping force of the wave washer 221 can be adjusted to a suitable size. A suitable clamping force can ensure smoother assembly in subsequent processes.

[0109] In the embodiments of this application, see Figure 9 and Figure 10 As shown, this auxiliary tooling 100 also includes a positioning base 130, which includes a base body 131, a positioning post 132 and an anti-rotation post 133. The positioning post 132 and the anti-rotation post 133 are both located on the base body 131, and the positioning post 132 and the anti-rotation post 133 are spaced apart.

[0110] In the embodiments of this application, please continue to refer to Figure 9 and Figure 10 Both the positioning post 132 and the anti-rotation post 133 can be cylindrical structures. The positioning post 132 includes a first positioning part 1320 and a second positioning part 1321 connected to each other. The first positioning part 1320 is located on the side of the second positioning part 1321 away from the base body 131. The first positioning part 1320 is inserted into the second half-shaft gear set 220b, and its main purpose is to fix the half-shaft gear 223 in the second half-shaft gear set 220b. The second positioning part 1321 is inserted into the differential housing 210 to position the differential housing 210. The anti-rotation post 133 is inserted into the differential housing 210 and can be used to position the differential housing 210 in the circumferential direction to prevent the differential housing 210 from rotating.

[0111] The specific procedure for installing the differential 200 using this auxiliary tooling 100 is as follows:

[0112] The first step is to install the differential housing 210 and the second half-shaft gear set 220b.

[0113] See Figure 11 and Figure 12 As shown, the differential housing 210 is installed onto the positioning base 130, with the lower end face of the differential housing 210 flush with the upper surface of the base body 131. At this time, the differential housing 210 is inserted into the positioning pin 132 and the anti-rotation pin 133 to prevent rotation and displacement of the differential housing 210. The second positioning part 1321 positions the differential housing 210, while the anti-rotation pin 133 extends into the pin hole of the differential housing 210. Then, the wave washer 221, the flat washer 222, and the half-shaft gear 223 in the second half-shaft gear set 220b are installed in sequence. That is, the wave washer 221 is engaged in the groove of the lower bottom wall of the differential housing 210, the half-shaft gear 223 is positioned by the first positioning part 1320, and the flat washer 222 is located between the half-shaft gear 223 and the wave washer 221.

[0114] It should be noted that when the wave washer 221 is engaged in the groove of the differential housing 210, the wave washer 221 is not compressed and is in an open state. For example, if the thickness of the wave washer 221 is 4mm, the wave washer 221 will lift the half shaft gear 223 and the flat washer 222.

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

[0116] See Figure 13 and Figure 14 As shown, the lower top block 112 of the positioning top block 110 is installed onto the half-shaft gear 223 of the second half-shaft gear set 220b. The cylindrical boss 1120 of the lower top block 112 is engaged with 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 half-shaft gear set 220a.

[0118] See Figure 15 and Figure 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, thereby positioning the half-shaft gear 223 in the first half-shaft gear set 220a with the upper top block 111, and the wave washer 221 is positioned with the upper groove of the differential housing 210.

[0119] Step 4: Install the compression component 120.

[0120] See Figure 17 and Figure 18As shown, before partially inserting the compression assembly 120 into the differential housing 210 and the moving chamber 114 of the positioning top block 110, the pull rod 123 is rotated left and right so that the spline 1232 on the outer side of the pull rod 123 aligns with the internal spline in the half-shaft gear 223 of the first half-shaft gear set 220a; then, the hook block 122 at the lower end of the pull rod 123 is aligned with the insertion hole 1112 of the upper top block 111 and inserted into the moving chamber 114. After insertion, the pull rod 123 is rotated 45° to 90° in its circumferential direction so that the hook block 122 rotates into the range of the abutment groove 1113. When the limiting block 1231 on the pull rod 123 is in close contact with the upper end face of the differential housing 210, it indicates that the compression assembly 120 has been inserted into place.

[0121] It should be noted that when using this auxiliary tool 100 for the first time, the tightening depth of the fixing part 1241 and the through hole 1230 needs to be adjusted, and the hook block 122 needs to be adjusted to a suitable insertion depth, that is, it is in the moving chamber 114 and does not interfere with the upper top block 111 and the lower top block 112.

[0122] Fifth step: Press-fit the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0123] See Figure 19 and Figure 20 As shown, manually rotating the grip 1240, rotating it vertically by approximately 90°, causes the telescopic rod 125 to move the push rod 121 towards the second half-shaft gear set 220b, causing the push rod 121 to extend and press against the lower push block 112. The lower push block 112 moves downward and presses against 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. At this time, the hook block 122 abuts against the abutment groove 1113, and the hook block 122 hooks the upper push block 111 and pulls it upward. The upper push block 111 gradually moves towards the first half-shaft gear set 220a, causing the upper push block 111 to press upward against the half-shaft gear 223 and the wave washer 221 in the first half-shaft gear set 220a, thus compressing the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0124] It should be noted that after the grip part 1240 is rotated into position in the vertical direction, the grip part 1240 has obvious damping and a certain holding force.

[0125] Furthermore, when using this auxiliary tooling 100 for the first time, the depth to which the push rod 121 is screwed into the telescopic rod 125 needs to be adjusted to ensure that the compression stroke of the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b is properly adjusted. That is, the wave washer 221 is compressed to the assembly thickness, for example, the original thickness of the wave washer 221 is compressed from 4mm to 2mm. At the same time, the wave washer 221 should not be compressed too tightly 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] Step 6: Install the first planetary gear set 230a and the second planetary gear set 230b.

[0127] See Figure 21 and Figure 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. The planetary gears 232 in the first planetary gear set 230a and the second planetary gear set 230b need to be installed with the half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0128] It is understood that the planetary gears 232 in the first planetary gear set 230a are all engaged with the 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 engaged with the half-shaft gears 223 in the first half-shaft gear set 220a and the second half-shaft gear set 220b.

[0129] Step 7: Rotate the first planetary gear set 230a and the second planetary gear set 230b.

[0130] See Figure 1 and Figure 23 As shown, manually hold and rotate the first planetary gear set 230a and the second planetary gear set 230b located on the left and right sides of the differential housing 210 around the half-shaft gear 223 of the first half-shaft gear set 220a and the second half-shaft gear set 220b. When the planetary gear 232 partially enters the differential housing 210, hold the grip part 1240 and rotate it in the circumferential direction to adjust the position of the planetary gear 232. On the other hand, use the planetary gear shaft 240 to test assemble to confirm that the center hole of the planetary gear 232 is aligned with the corresponding position on the differential housing 210. During rotation, the spline 1232 on the pull rod 123 drives the half-shaft gear 223 in the first half-shaft gear set 220a to rotate. The half-shaft gear 223 in the first half-shaft gear set 220a drives the planetary gear 232 and the spherical washer 231 in the first planetary gear set 230a and the second planetary gear set 230b to rotate.

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

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

[0133] See Figure 24 and Figure 25 As shown, first, the gripping part 1240 is rotated vertically to reset, so that the upper top block 111 and the lower top block 112 return to their original state. Then, the compression assembly 120 is rotated upward along the circumferential direction and taken out. 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] The differential 200 is installed through the above eight steps. Using the auxiliary fixture 100, the wave washer 221 in the first half-shaft gear set 220a and the second half-shaft gear set 220b can be compressed and installed with a single rotation and press, making the operation more convenient. The clamping force and stroke are just right each time, facilitating the next process; it requires no power supply or compressed air, is a purely mechanical structure, and is suitable for various application scenarios; this auxiliary fixture 100 integrates the functions of compressing the wave washer 221 and rotating the half-shaft gear 223, which is beneficial for subsequent assembly processes.

[0135] In other words, this auxiliary tooling 100 can improve the assembly efficiency of the differential 200, allowing small parts such as the half-shaft gear 223 and the wave washer 221 to be assembled in one go, avoiding repeated disassembly and assembly and improving assembly accuracy; the compressive force generated by the gripping part 1240 reduces the labor intensity of the operator. In addition, this auxiliary tooling 100 improves the convenience of operation by integrating the function of rotating the half-shaft gear 223.

[0136] Example 2

[0137] Embodiment 2 of this application provides a vehicle, which includes a differential 200 assembled using the auxiliary tooling 100 described in Embodiment 1, such as... Figure 24 As shown. The differential 200 assembled using the auxiliary tooling 100 in Embodiment 1 has advantages such as high precision and fast assembly progress, and can further reduce the noise brought by the differential 200.

[0138] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0139] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. An auxiliary tooling for assembling a differential, the differential comprising a differential housing, a first half-shaft gear set, and a second half-shaft gear set, the first half-shaft gear set and the second half-shaft gear set being disposed within the differential housing, characterized in that, The auxiliary tooling includes: A positioning top block is disposed between the first half-shaft gear set and the second half-shaft gear set. The positioning top block includes an upper top block and a lower top block that can slide relative to each other. The upper top block abuts against the first half-shaft gear set, and the lower top block abuts against the second half-shaft gear set. A compression assembly, the portion of which is inserted into the differential housing is connected to the positioning top block; The upper block includes an abutment groove, and the compression assembly includes: A pull rod, wherein the pull rod has a through hole extending along its axial direction, and a hook block is provided on the outer side of the pull rod, the hook block cooperating with the abutment groove; A push rod is provided inside the through hole; A gripping component includes a gripping part and a fixing part, wherein the gripping part is connected to the fixing part via a diagonal pull block, and the fixing part is connected to the through hole; A telescopic rod is connected to the gripping part, the telescopic rod passes through the fixing part, and a portion of the telescopic rod is disposed in the through hole, the telescopic rod disposed in the through hole is connected to the top rod disposed in the through hole; Specifically, when the gripping part is pressed down in the direction of the second half-shaft gear set: The gripping part drives the telescopic rod to move toward the second half-shaft gear set, thereby driving the push rod to push the lower push block toward the second half-shaft gear set; The fixing part 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 abutting groove, so as to drive the upper top block to move toward the first 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 movable chamber; The positioning top block includes an insertion hole, through which the compression component is inserted into the movable cavity. The compression component is movable within the movable cavity to drive the upper top block to move toward the first half-shaft gear set and to drive the lower top block to move toward 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 an oblong hole, and the outer side of the lower top block is provided with a threaded hole. The oblong hole of the upper top block corresponds to the threaded hole of the lower top block. The positioning top block also includes a movable component, which is sequentially inserted into the oblong hole of the upper top block and the threaded hole of the lower top block. The movable component can slide within the oblong hole of the upper top block.

4. The auxiliary tooling according to claim 2, characterized in that, The upper block includes the insertion hole, and the abutting groove is provided on opposite sides of the insertion hole; When the compression assembly is inserted into the movable cavity, the push rod and the hook block are located within the movable cavity; When the compression assembly moves, the push rod pushes the lower push block to move closer to the second half-shaft gear set, the hook block contacts the abutment groove, and drives the upper push block to move closer to the first half-shaft gear set.

5. The auxiliary tooling according to claim 1, characterized in that, The fixing part is threadedly connected to the through hole, and the auxiliary tooling also includes a first fixing member, which is used to fasten the fixing part and the pull rod. The telescopic rod is threadedly connected to the top rod, and the auxiliary tooling also includes at least two second fixing members, which are sleeved on the outside of the telescopic rod and the top rod.

6. The auxiliary tooling according to claim 1, characterized in that, The pull rod also includes a limiting block, and the limiting block and the hook block are arranged sequentially at intervals along the axial direction of the pull rod. The limiting block is located on the side of the hook block away from the positioning top block. When the compression assembly is inserted into the movable chamber, the limiting block abuts against the end face of the differential housing.

7. The auxiliary tooling according to claim 1, characterized in that, The pull rod is also provided with a spline, which matches the internal spline in the first half-shaft gear set. When the pull rod rotates, it can drive the first half-shaft gear set to rotate.

8. The auxiliary tooling according to claim 1, characterized in that, The auxiliary tooling also includes: The positioning base includes a base body, a positioning post, and an anti-rotation post. The positioning post and the anti-rotation post are both disposed on the base body, and the positioning post and the anti-rotation post are spaced apart. The positioning column includes a first positioning part and a second positioning part connected to each other. The first positioning part is located on the side of the second positioning part away from the base body. The first positioning part is inserted into the second half-shaft gear set, and the second positioning part is inserted into the differential housing. The anti-rotation post is inserted into the differential housing.

9. A vehicle, characterized in that, This includes a differential assembled using the auxiliary tooling described in any one of claims 1 to 8.

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