Differential circlip mounting device

Abstract

The invention relates to the technical field of automobile parts assembly tooling, and discloses a differential retaining spring installation device, comprising: a base for expanding and pressing the retaining spring into the retaining spring groove inside the cross shaft and a bracket for limiting the separation ring so that the outer retaining spring groove of the separation ring is at the same height as the inner retaining spring groove of the cross shaft; the base is fixed on a workbench, and the bracket is located above the base; the invention expands and presses the retaining spring into the inner retaining spring groove of the cross shaft through a limiting piece on the base, limits the cross shaft and the separation ring through the bracket so that the inner retaining spring groove of the cross shaft and the outer retaining spring groove of the separation ring are at the same height, and finally separates the limiting piece from the cross shaft and the separation ring through the bracket, so that the retaining spring is clamped in the inner retaining spring groove of the cross shaft and the outer retaining groove of the separation ring under the action of its own elastic force, thereby obtaining an assembly of the retaining spring, the cross shaft and the separation ring, and disassembling it from the tooling, which has the advantages of simple assembly process, good assembly effect and convenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of differential installation, and in particular to a differential retaining spring installation device. Background Art

[0002] When a car turns, the turning radius of the inner wheel and the outer wheel is different. The turning radius of the outer wheel should be larger than that of the inner wheel, which requires that the speed of the outer wheel should be higher than that of the inner wheel when turning. The function of the differential is to meet the requirement of different wheel speeds on both sides of the car when turning; when the car turns or drives on uneven roads, the left and right wheels roll at different speeds, that is, to ensure that the driving wheels on both sides perform pure rolling motion. The differential is installed to adjust the speed difference between the left and right wheels. In four-wheel drive, in order to drive the four wheels, all the wheels must be connected. If the four wheels are mechanically connected together, the car cannot rotate at the same speed when driving in a curve. In order to make the rotation speed of the car basically consistent when driving in a curve, an intermediate differential needs to be added to adjust the speed difference between the front and rear wheels.

[0003] When installing the circlip on the cross shaft in the existing differential, the circlip is first spread out with circlip pliers so that the circlip is stuck in the inner circlip groove of the cross shaft, and then the release ring is put in along the inner wall of the cross shaft. When the cross shaft and the release ring are sleeved together and the inner circlip groove of the cross shaft and the outer groove of the release ring are opposite to each other, the circlip pliers are loosened. At this time, the circlip is stuck in the inner circlip groove of the cross shaft and the outer groove of the release ring under the action of its own elastic force, connecting the cross shaft and the release ring together. However, the gap between the cross shaft and the release ring is very small, and it is difficult for the circlip pliers to enter. Therefore, the installation of the circlip is very inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide a differential retaining spring installation device, which solves the problem of inconvenient retaining spring installation in the prior art and has a simple structure and is easy to operate.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A differential circlip installation device, characterized in that it comprises a base for expanding the circlip and pressing it into an inner circlip groove of a cross shaft and a bracket for limiting the separation ring so that the outer circlip groove of the separation ring is at the same height as the inner circlip groove of the cross shaft;

[0007] The base is fixed on the workbench, and the bracket is located above the base;

[0008] The base is provided with at least two oppositely arranged limiting plates, and the limiting plates are vertically fixed on the upper end surface of the base;

[0009] The surface of the limiting piece on the side opposite to the inner retaining spring groove is provided with a convex portion in contact with the inner wall where the inner retaining spring groove is located;

[0010] The bracket is provided with a positioning groove which matches the position of the limiting piece. The limiting piece passes through the positioning groove and is higher than the distance from the inner retaining ring groove to the bottom of the cross shaft.

[0011] By adopting the above technical solution, after the retaining ring is placed in the inner retaining ring groove of the cross shaft, the cross shaft is placed on the upper end surface of the bracket, and the retaining ring is stretched open by the limiting piece passing through the groove of the bracket and pressed into the inner retaining ring groove.

[0012] The present invention is further configured as follows: the limiting plates are arranged in a circular array on the upper surface of the base, and the diameter of the circle where the convex part of the surface of the limiting plates is located is equal to the diameter of the circle where the inner wall of the cross shaft is located;

[0013] Preferably, the number and positions of the limiting plates match the limiting grooves on the outer wall of the separation ring.

[0014] By adopting the above technical solution, the limiting plate presses the retaining ring into the inner retaining ring groove on the inner wall of the cross shaft, and the limiting plate limits the separation ring through the limiting groove on the outer wall of the separation ring, so that the separation ring can be smoothly positioned in the cross shaft.

[0015] The present invention is further configured as follows: the surface of the limiting plate opposite to the inner retaining spring groove is a smooth curved surface, and the highest point of the smooth curved surface is a convex portion where the limiting plate contacts the inner wall of the inner retaining spring groove.

[0016] By adopting the above technical solution, the inner wall of the cross shaft is pressed against the convex part of the limiting plate and then pressed downward with force so that the limiting plate gradually passes through the inner wall of the retaining spring, thereby expanding the retaining spring and pressing it into the inner retaining spring groove.

[0017] The present invention is further configured as follows: an upper end surface of the bracket is provided with an area in contact with the cross shaft and the separation ring, and the limit piece is located between the areas in contact with the cross shaft and the separation ring on the upper end surface of the bracket.

[0018] By adopting the above technical solution, the upper end face of the bracket further positions the cross shaft and the separation ring, ensuring that the inner retaining ring groove of the cross shaft and the outer retaining ring groove of the separation ring are at the same height, preparing for the retaining ring to be able to be simultaneously stuck in the outer retaining ring groove of the separation ring in the later stage; at the same time, the limiting plate is located between the areas on the upper end face of the bracket that are in contact with the cross shaft and the separation ring, ensuring that the retaining ring is pressed into the inner retaining ring groove and the limiting plate will not hinder the assembly of the separation ring.

[0019] The present invention is further configured as follows: the bracket is provided with a handle for removing the cross shaft and the separation ring from the bracket.

[0020] By adopting the above technical solution, when the cross shaft and the separation ring are positioned on the upper end surface of the bracket, and the inner retaining spring groove of the cross shaft and the outer retaining spring groove of the separation ring are at the same height, the bracket is lifted upward by the handle, so that the cross shaft and the separation ring located above the bracket are simultaneously separated from the base and the limiting plate in the base. At this time, the retaining spring pressed into the inner retaining spring groove of the cross shaft automatically stretches under the action of elastic force and is clamped into the outer retaining spring groove of the separation ring, thereby connecting the cross shaft and the separation ring together.

[0021] The differential circlip installation device is used to install the differential circlip, which includes the following steps:

[0022] Step 1: Fix the base on the workbench, and then place the bracket on the upper surface of the base, and the limiting piece on the base passes through the positioning groove of the bracket.

[0023] Step 2: After placing the retaining ring in the inner retaining ring groove of the cross shaft, press the inner wall of the cross shaft against the convex part of the limiting plate and press it down with force until the bottom of the cross shaft contacts the upper end surface of the bracket. The limiting plate gradually passes through the inner wall of the retaining ring, expands the retaining ring, and presses it into the inner retaining ring groove.

[0024] Step 3: Place the separation ring along the inner wall of the cross shaft. The separation ring is limited by the limiting groove and the limiting plate until the bottom of the separation ring contacts the upper end surface of the bracket. At this time, the outer retaining ring groove and the inner retaining ring groove are at the same height.

[0025] Step 4: Lift the bracket upwards and remove the cross shaft and the separation ring at the same time. Pull the limit plate on the base away from between the cross shaft and the separation ring. The retaining ring is automatically stuck in the inner retaining ring groove and the outer retaining ring groove under its own elastic force, connecting the cross shaft and the separation ring together.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention has a simple structure and is easy to operate. The retaining spring is stretched and pressed into the inner retaining spring groove of the cross shaft through the limiting plate on the base. The cross shaft and the separation ring are limited by the upper end surface of the bracket, so that the inner retaining spring groove of the cross shaft and the outer retaining spring groove of the separation ring are at the same height, ensuring that the retaining spring can be stuck in the inner retaining spring groove and the outer retaining spring groove at the same time after the limiting plate is withdrawn, so the assembly success rate is high and the reliability is good.

[0028] 2. The present invention separates the limit plate from the cross shaft and the separation ring by separating the bracket from the base. The bracket drives the cross shaft, the retaining spring and the separation ring to move upward synchronously. During this process, the retaining spring and the convex part of the limit plate are gradually separated. After complete separation, the retaining spring is stuck in the inner retaining spring groove of the cross shaft and the outer retaining groove of the separation ring under the action of its own elastic force, and the cross shaft and the separation ring are connected together. This process utilizes the elasticity of the retaining spring itself, and its operation is simple and the implementation process is ingenious.

[0029] 3. In the present invention, the limiting plate on the base positions the separation ring through the positioning groove on the bracket and the limiting groove on the outer wall of the separation ring, ensuring that the retaining ring can be pressed into the inner retaining groove. At the same time, the positioning groove on the bracket ensures that the limiting plate will not interfere with the assembly of the separation ring. The assembly process is easy and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of a differential retaining spring installation device before assembly with the retaining spring, a cross shaft and a release ring according to the present invention.

[0032] Figure 2 It is a schematic diagram of a differential retaining spring installation device of the present invention after being assembled with the retaining spring, the cross shaft and the release ring.

[0033] Figure 3 The present invention is a schematic diagram of a differential retaining spring installation device for assembling and then disassembling an assembly of a retaining spring, a cross shaft and a release ring.

[0034] In the figure, 1, base; 101, limit plate; 2, bracket; 201, positioning groove; 202, handle; 3, retaining ring; 4, cross shaft; 401, inner retaining ring groove; 5, separation ring; 501, outer retaining ring groove; 502, limit groove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1 to Figure 3, a differential retaining spring installation device, comprising a base 1 for stretching and pressing the retaining spring 3 into the inner retaining spring groove 401 of the cross shaft 4 and a bracket 2 for limiting the separation ring 5 so that the outer retaining spring groove 501 of the separation ring 5 is at the same height as the inner retaining spring groove 401 of the cross shaft 4; the base 1 is fixed on a workbench, and the bracket 2 is located above the base 1; at least two oppositely arranged limiting plates 101 are provided on the base 1, and the limiting plates 101 are vertically fixed on the upper end surface of the base 1; the limiting plates 101 are provided with a convex portion on the surface on the side opposite to the inner retaining spring groove 401, which contacts the inner wall of the inner retaining spring groove 401; the bracket 2 is provided with a positioning groove 201 matching the position of the limiting plate 101, and the limiting plate 101 passes through the positioning groove 201 and is higher than the distance from the inner retaining spring groove 401 to the bottom of the cross shaft 4.

[0037] When installing the retaining ring 3 on the cross shaft 4 and the separating ring 5 in the differential, first place the bracket 2 on the top of the base 1; then put the retaining ring 3 into the position of the inner retaining ring groove 401 of the cross shaft 4, and then place the cross shaft 4 on the upper end surface of the bracket 2, the limiting piece 101 enters from the inner wall of the retaining ring 3 and stretches the retaining ring 3, the diameter of the retaining ring 3 increases, and is pressed into the inner retaining ring groove 401 of the cross shaft 4; then put the separating ring 5 along the inner wall of the cross shaft 4, the separating ring 5 is limited by the limiting groove 502 and the limiting piece 101, and the bracket 2 is set The positioning groove 201 ensures that the limit plate 101 will not interfere with the assembly of the separation ring 5 until the bottom of the separation ring 5 reaches the upper end surface of the bracket 2, at which time the inner retaining ring groove 401 and the outer retaining ring groove 501 are at the same height; finally, the cross shaft 4 and the separation ring 5 are removed at the same time through the bracket 2, at which time the retaining ring 3 is automatically clamped in the inner retaining ring groove 401 of the cross shaft 4 and the outer retaining groove 501 of the separation ring 5 under the action of its own elastic force, and the cross shaft 4 and the separation ring 5 are connected together. Compared with the prior art, the device has a simple structure and is easy to operate.

[0038] In order to open the retaining spring 3 , the limiting pieces 101 are arranged in a circular array on the upper surface of the base 1 , and the diameter of the circle where the limiting pieces 101 are located is equal to the diameter of the circle where the inner wall of the cross shaft 4 is located.

[0039] As a preferred solution of the present invention, the number and position of the limiting plates 101 match the limiting grooves 502 on the outer wall of the separation ring 5. When the separation ring 5 is installed along the inner wall of the cross shaft 4, the limiting plates 101 further position the separation ring 5 through the limiting grooves 502 on the outer wall of the separation ring 5, thereby facilitating the installation of the separation ring 5.

[0040] The surface of the limiting plate 101 opposite to the inner retaining ring groove 401 is a smooth curved surface, the highest point of which is the convex portion where the limiting plate 101 contacts the inner wall of the inner retaining ring groove 401, and the convex portion is used to press the retaining ring 3 into the inner retaining ring groove.

[0041] The upper end surface of the bracket 2 is provided with an area in contact with the cross shaft 4 and the separation ring 5, which is used to carry the cross shaft 4 and the separation ring 5, and the relative positions of the cross shaft 4 and the separation ring 5 are further positioned through the upper end surface of the bracket 2, so that the inner retaining ring groove 401 of the cross shaft 4 and the outer retaining ring groove 501 of the separation ring 5 are located at the same height, which is convenient for the retaining ring 3 to be connected to the cross shaft 4 and the separation ring 5 at the same time; the limiting plate 101 is located between the areas on the upper end surface of the bracket 2 that are in contact with the cross shaft 4 and the separation ring 5, to ensure that the retaining ring 3 can be pressed into the inner retaining ring groove, and the limiting plate 101 will not hinder the assembly of the separation ring 5.

[0042] In order to facilitate the simultaneous removal of the cross shaft 4 and the separation ring 5, the retaining ring 3 is simultaneously clamped in the inner retaining ring groove 401 of the cross shaft 4 and the outer retaining ring groove 501 of the separation ring 5 to achieve the connection between the cross shaft 4 and the separation ring 5. The bracket 2 is provided with a handle 202 for removing the cross shaft 4 and the separation ring 5 from the bracket 2.

[0043] The differential circlip installation device is used to install the differential circlip, which includes the following steps:

[0044] Step 1: Fix the base 1 on the workbench, and then place the bracket 2 on the upper surface of the base 1 , and the limiting piece 101 on the base 1 passes through the positioning groove 201 of the bracket 2 .

[0045] Step 2: After placing the retaining ring 3 in the inner retaining ring groove 401 of the cross shaft 4, press the inner wall of the cross shaft 4 against the convex part of the limiting plate 101 and press it down with force until the bottom of the cross shaft 4 contacts the upper end surface of the bracket 2. The limiting plate 101 gradually passes through the inner wall of the retaining ring 3, and the retaining ring 3 is stretched and pressed into the inner retaining ring groove 401.

[0046] Step 3: Place the separation ring 5 along the inner wall of the cross shaft 4. The separation ring 5 is limited by the limiting groove 502 and the limiting plate 101 until the bottom of the separation ring 5 contacts the upper end surface of the bracket 2. At this time, the outer retaining ring groove 501 is at the same height as the inner retaining ring groove 401.

[0047] Step 4: Lift the bracket 2 upwards and remove the cross shaft 4 and the separation ring 5 at the same time. The limiting plate 101 on the base 1 is pulled out from between the cross shaft 4 and the separation ring 5. The retaining ring 3 is automatically stuck in the inner retaining ring groove 401 and the outer retaining ring groove 501 under the action of its own elastic force, connecting the cross shaft 4 and the separation ring 5 together.

Claims

1. A differential circlip mounting device, characterized in that: It comprises a base (1) for spreading the retaining ring (3) and pressing it into the inner retaining ring groove (401) of the cross shaft (4), and a bracket (2) for limiting the separation ring (5) so that the outer retaining ring groove (501) of the separation ring (5) and the inner retaining ring groove (401) of the cross shaft (4) are at the same height; The base (1) is fixed on a workbench, and the bracket (2) is located above the base (1); The base (1) is provided with at least two limiting plates (101) arranged opposite to each other, and the limiting plates (101) are vertically fixed on the upper end surface of the base (1); A convex portion that contacts the inner wall of the inner retaining spring groove (401) is provided on the surface of the limiting piece (101) on the side opposite to the inner retaining spring groove (401); The bracket (2) is provided with a positioning groove (201) matching the position of the limiting piece (101); the limiting piece (101) passes through the positioning groove (201) and is higher than the distance from the inner retaining ring groove (401) to the bottom of the cross shaft (4); The limiting plates (101) are arranged in a circular array on the upper surface of the base (1), and the diameter of the circle where the convex portion of the surface of the limiting plates (101) is located is equal to the diameter of the circle where the inner wall of the cross shaft (4) is located; The number and positions of the limiting plates (101) match the limiting grooves (502) on the outer wall of the separation ring (5).

2. A differential retaining spring installation device according to claim 1, characterized in that: The surface of the limiting piece (101) opposite to the inner retaining ring groove (401) is a smooth curved surface, and the highest point of the smooth curved surface is the convex portion where the limiting piece (101) contacts the inner wall of the inner retaining ring groove (401).

3. A differential circlip installation device according to claim 1, characterized in that: The upper end surface of the bracket (2) is provided with an area in contact with the cross shaft (4) and the separation ring (5), and the limiting piece (101) is located between the areas in contact with the cross shaft (4) and the separation ring (5) on the upper end surface of the bracket (2).

4. A differential circlip installation device according to claim 1, characterized in that: The bracket (2) is provided with a handle (202) for removing the cross shaft (4) and the separation ring (5) from the bracket (2).

5. The differential retaining spring installation device according to any one of claims 1 to 4, characterized in that: The differential circlip installation comprises the following steps: Step 1: fix the base (1) on a workbench, and then place the bracket (2) on the upper surface of the base (1), and the limiting piece (101) on the base (1) passes through the positioning groove (201) of the bracket (2); Step 2: After placing the retaining ring (3) in the inner retaining ring groove (401) of the cross shaft (4), the inner wall of the cross shaft (4) is pressed against the convex part of the limiting plate (101) and then pressed downward with force until the bottom of the cross shaft (4) contacts the upper end surface of the bracket (2), and the limiting plate (101) gradually passes through the inner wall of the retaining ring (3), and the retaining ring (3) is stretched and pressed into the inner retaining ring groove (401); Step 3: Place the separation ring (5) along the inner wall of the cross shaft (4), and limit the separation ring (5) by the limiting groove (502) and the limiting plate (101) until the bottom of the separation ring (5) contacts the upper end surface of the bracket (2). At this time, the outer retaining ring groove (501) and the inner retaining ring groove (401) are at the same height; Step 4: Lift the bracket (2) upwards and remove the cross shaft (4) and the separation ring (5) at the same time. The limit plate (101) on the base (1) is pulled out from between the cross shaft (4) and the separation ring (5). The retaining ring (3) is automatically locked in the inner retaining ring groove (401) and the outer retaining ring groove (501) under its own elastic force, thereby connecting the cross shaft (4) and the separation ring (5) together.

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