Differential spider

Abstract

The utility model relates to the technical field of differential mechanisms, in particular to a differential mechanism cross axle which comprises a long shaft and short shafts arranged on the two sides of the long shaft, the long shaft and the short shafts are each provided with an oil supplementing structure, each oil supplementing structure comprises a spiral groove, and the spiral grooves are formed in the long shaft and the short shafts. The spiral groove extends along the axial direction of the long shaft and the axial direction of the short shaft; according to the utility model, the spiral groove is arranged, so that the lubricant storage area is increased, the lubricant is uniformly distributed on the cross shaft, the lubricating effect is improved, and the problem that the cross shaft has lubricating dead angles is solved; a storage cavity and dispersion holes are formed, so that the effect of automatically supplying the lubricating agent is achieved, and the overhaul frequency is reduced; by arranging a compensation structure, the assembly difficulty of the cross shaft is reduced, and the stability of the cross shaft after assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a differential cross shaft. Background Art

[0002] The existing cross shaft structure is relatively common, such as the cross shaft used in the axle inter-wheel differential mechanism with patent number 200920083980.0. For details, please refer to Figure 1 ,like Figure 1 As shown, the cross shaft is composed of a long shaft 1 and two short shafts 2, 3. The middle of the long shaft 1 is provided with symmetrical sockets 4, 5, and the two short shafts 2, 3 are respectively installed in the sockets 4, 5. In order to enhance the lubrication effect, grooves are provided on the long shaft 1 and the short shafts 2, 3 to store lubricants. Figure 1 The amount of lubricant stored in the grooves is small, and the lubricant is difficult to move to the cross shaft outside the grooves, which leads to dead angles for lubrication and areas on the cross shaft that are prone to dry grinding.

[0003] Therefore, it is necessary to provide a differential cross shaft with no dead angle lubrication. Utility Model Content

[0004] The utility model provides a differential cross shaft to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a differential cross shaft, including: a long shaft and short shafts arranged on both sides of the long shaft, and the long shaft and the short shaft are both provided with oil replenishing structures, and the oil replenishing structure includes a spiral groove, and the spiral groove extends along the axial direction of the long shaft and the axial direction of the short shaft.

[0006] Furthermore, the vertical cross-section of the spiral groove is 1 / 2 of an arc.

[0007] Furthermore, slots are provided on both sides of the long axis.

[0008] Furthermore, an insert block is integrally formed at one end of the short shaft, and the short shaft extends into the slot through the insert block to be connected to the long shaft.

[0009] Furthermore, a movable through hole is provided in the slot.

[0010] Furthermore, a compensation structure is arranged in the movable through hole, and the compensation structure includes a movable block, and the movable block is arranged in the movable through hole, and a part of the movable block extends to the outside of the movable through hole.

[0011] Furthermore, a slot is provided on the inserting block, and the width of the slot matches the width of the movable block.

[0012] Furthermore, a storage cavity is provided at the center of the major axis and the minor axis, and the storage cavity is filled with lubricant.

[0013] Furthermore, dispersion holes are arranged at equal intervals on the spiral groove, and the spiral groove is connected with the storage cavity through the dispersion holes.

[0014] Furthermore, the depth of the spiral groove is 1 / 16-3 / 8 of the radius of the major axis and the minor axis.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting the spiral groove, the area for storing lubricant is increased, so that the lubricant is evenly distributed on the cross shaft, the lubrication effect is improved, and the problem of lubrication dead corners on the cross shaft is solved;

[0017] By setting up storage chambers and dispersion holes, the effect of automatic lubricant replenishment is achieved, reducing the maintenance frequency;

[0018] By setting up a compensation structure, the difficulty of assembling the cross shaft is reduced and the stability of the cross shaft after assembly is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of a differential cross shaft in the prior art;

[0021] Figure 2 A three-dimensional diagram of the optimal embodiment of the differential cross shaft of the utility model;

[0022] Figure 3 A three-dimensional diagram of the optimal embodiment of the compensation structure of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the optimal embodiment of the dispersion hole and oil replenishment structure of the utility model.

[0024] Among them, 100, long axis; 101, slot; 102, movable through hole; 200, short axis; 201, plug-in block; 202, slot; 300, oil replenishing structure; 400, compensation structure; 500, storage cavity; 600, dispersion hole. DETAILED DESCRIPTION

[0025] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0026] See also Figure 2 , Figure 2 1 is a stereogram of the optimal embodiment of the differential cross shaft of the utility model. Figure 2 As shown, at least one embodiment provides a differential cross shaft, including: a long shaft 100 and a short shaft 200 arranged on both sides of the long shaft 100, and an oil replenishing structure 300 is arranged on the long shaft 100 and the short shaft 200, and the oil replenishing structure 300 includes a spiral groove, and the spiral groove extends along the axial direction of the long shaft 100 and the axial direction of the short shaft 200, and the spiral groove can retain the lubricant needed when the cross shaft and the contact surface are against each other. In order to better store the lubricant in the groove, the vertical section of the spiral groove is 1 / 2 arc. If the groove is too shallow, it cannot store enough lubricant, and if the groove is too deep, it will reduce the compressive strength of the cross shaft, so the depth of the spiral groove is 1 / 16-3 / 8 of the radius of the long shaft 100 and the short shaft 200.

[0027] Please continue reading Figure 2 Combined with Figure 3 , Figure 3 This is a stereogram of the optimal embodiment of the compensation structure of the utility model. Figures 2 to 3 As shown, it needs to be further explained that, in order to facilitate the assembly of the cross shaft to the differential, the long shaft 100 and the short shaft 200 are separately arranged, and in order to relatively connect the long shaft 100 and the short shaft 200, slots 101 are opened on both sides of the long shaft 100. An insert block 201 is integrally formed at one end of the short shaft 200, and the short shaft 200 extends into the slot 101 through the insert block 201 to connect with the long shaft 100. Specifically, the inner contour of the slot 101 is a rectangle, and the outer contour of the insert block 201 is a rectangle.

[0028] Please continue reading Figure 3 .like Figure 3 As shown, during the production and reinforcement process of the long shaft 100 and the short shaft 200, the matching of the slot 101 and the insert block 201 is prone to errors, which will lead to unstable assembly between the cross shaft and the differential. Therefore, in order to avoid the unstable assembly of the cross shaft, a movable through hole 102 is provided in the slot 101. A compensation structure 400 is provided in the movable through hole 102. Specifically, the compensation structure 400 includes a movable block, which allows the insert block 201 to be inserted into a suitable depth position of the slot 101. The movable block is arranged in the movable through hole 102, and part of the movable block extends to the outside of the movable through hole 102. A slot 202 is provided on the insert block 201, and the width of the slot 202 is consistent with the width of the movable block. The length of the movable block can be selected according to the error between the slot 101 and the insert block 201, that is, the length of the extended movable block needs to make the end face of the insert block 201 abut against the slot 101, and at the same time, the other end of the short shaft 200 abuts against the differential.

[0029] Please continue reading Figure 2 Combined with Figure 4 , Figure 4 This is a schematic diagram of the structure of the optimal embodiment of the dispersion hole and oil replenishment structure of the utility model. Figure 2 and Figure 4 As shown, a storage cavity 500 is provided at the center of the long axis 100 and the short axis 200, and the storage cavity 500 is filled with lubricant. Dispersing holes 600 are provided at equal intervals on the spiral groove, and the spiral groove is connected to the storage cavity 500 through the dispersing holes 600.

[0030] In summary, by providing a spiral groove, the area for storing lubricant is increased, the lubricant is evenly distributed on the cross shaft, the lubrication effect is improved, and the problem of lubrication dead corners on the cross shaft is solved; by providing a storage cavity 500 and a dispersion hole 600, the effect of automatic replenishment of lubricant is achieved, and the maintenance frequency is reduced; by providing a compensation structure 400, the difficulty of assembling the cross shaft is reduced, and the stability of the cross shaft after assembly is improved.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A differential cross shaft, characterized in that: include: A long axis (100) and short axes (200) arranged on both sides of the long axis (100), the long axis (100) and the short axis (200) are both provided with an oil replenishing structure (300), the oil replenishing structure (300) comprises a spiral groove, and the spiral groove extends along the axial direction of the long axis (100) and the axial direction of the short axis (200).

2. The differential cross shaft according to claim 1, characterized in that: The vertical cross section of the spiral groove is 1 / 2 of an arc.

3. The differential cross shaft according to claim 2, characterized in that: Slots (101) are provided on both sides of the long axis (100).

4. The differential cross shaft according to claim 3, characterized in that: An insert block (201) is integrally formed at one end of the short shaft (200), and the short shaft (200) extends into the slot (101) through the insert block (201) to be connected to the long shaft (100).

5. The differential cross shaft according to claim 4, characterized in that: A movable through hole (102) is provided in the slot (101).

6. The differential cross shaft according to claim 5, characterized in that: A compensation structure (400) is arranged in the movable through hole (102), and the compensation structure (400) comprises a movable block, the movable block is arranged in the movable through hole (102), and a part of the movable block extends to the outside of the movable through hole (102).

7. The differential cross shaft according to claim 6, characterized in that: The insert block (201) is provided with a slot (202), and the width of the slot (202) matches the width of the movable block.

8. The differential cross shaft according to claim 1, characterized in that: A storage cavity (500) is provided at the center of the long axis (100) and the short axis (200), and the storage cavity (500) is filled with lubricant.

9. The differential cross shaft according to claim 8, characterized in that: Dispersion holes (600) are arranged at equal intervals on the spiral groove, and the spiral groove is connected to the storage cavity (500) through the dispersion holes (600).

10. The differential cross shaft according to claim 1, characterized in that: The depth of the spiral groove is 1 / 16-3 / 8 of the radius of the major axis (100) and the minor axis (200).

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