Driving rear axle sealing structure for light truck

Abstract

The utility model discloses a driving rear axle sealing structure for a light truck, which relates to the technical field of driving rear axles for light trucks and is characterized in that a storage groove is formed in the top of a shell, a mounting shell is connected to the top end of the shell in a matched manner, the storage groove is connected with a supporting plate in an abutting manner, the bottom end of an abutting pad is connected with the supporting plate in an abutting manner, and the side end of the abutting pad is connected with the shell in an abutting manner; the side end of the connecting pad is connected with the abutting pad in an abutting mode, the bottom end of the connecting pad is connected with the supporting plate in an abutting mode, and the top end of the connecting pad is fixedly connected with an abutting plate which is connected with the mounting shell in a matched mode. When the installation shell is installed on the outer shell, the installation shell abuts against the abutting pad and the connecting pad, the connecting pad and the abutting pad seal a gap layer by layer, a lubricating oil permeation path is increased, the sealing effect on lubricating oil is improved, when the connecting pad and the abutting pad deform, the space between the supporting plate and the outer shell is filled with the connecting pad and the abutting pad, and the sealing effect on the lubricating oil is improved. And the phenomenon that the stability between the connecting pad and the abutting pad is reduced due to deformation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drive rear axles for light trucks, and particularly relates to a sealing structure for a drive rear axle of a light truck. Background Art

[0002] The drive rear axle for a light truck is a key component in a light truck. It is responsible for transmitting the power generated by the engine to the rear wheels through the transmission system to achieve the driving and running of the vehicle. It mainly consists of a drive rear axle housing, bearings, drive shafts, a differential, and a gear set, etc.

[0003] In the prior art, the drive rear axle housing mainly consists of an outer shell and a mounting shell. Lubricating oil is stored in the outer shell, and a sealing structure is installed on the outer side of the outer shell for sealing. The sealing structure mainly consists of an oil seal and an oil seal seat. The oil seal and the oil seal seat block and seal the installation gap between the outer shell and the mounting shell.

[0004] However, the existing oil seal structure has relatively low structural strength. When the drive rear axle is running, the lubricating oil overflows from the installation gap of the outer shell, and the oil seal is easily deformed by the extrusion of the lubricating oil, affecting its own stability, resulting in the overflow of the lubricating oil and causing pollution. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a sealing structure for a drive rear axle of a light truck to solve the technical problem that in the prior art, the existing oil seal structure has relatively low structural strength. When the drive rear axle is running, the lubricating oil overflows from the installation gap of the outer shell, and the oil seal is easily deformed by the extrusion of the lubricating oil, affecting its own stability, resulting in the overflow of the lubricating oil and causing pollution.

[0006] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0007] A sealing structure for a drive rear axle of a light truck, comprising:

[0008] An outer shell, a storage groove is opened at the top of the outer shell, a mounting shell is connected in a matching manner at the top end of the outer shell, and a support plate is connected in a holding manner to the storage groove;

[0009] A holding pad, the bottom end of the holding pad is connected in a holding manner to the support plate, and the side end of the holding pad is connected in a holding manner to the outer shell;

[0010] A connecting pad, the side end of the connecting pad is connected in a holding manner to the holding pad, the bottom end of the connecting pad is connected in a holding manner to the support plate, a holding plate is fixedly connected to the top end of the connecting pad, and the holding plate is connected in a matching manner to the mounting shell.

[0011] As a further scheme of the utility model: a toothed plate is axially and fixedly connected to the inner wall of the outer shell, the toothed plate is in a circular ring serrated shape, a tooth groove is opened at the side end of the holding pad, and the toothed plate is in meshing connection with the tooth groove.

[0012] As a further solution of the utility model: a convex pad is axially and fixedly connected to the side end of the connecting pad, one end of the connecting pad away from the abutting pad is abutted and connected to the support plate, a groove is axially formed in the side end of the abutting pad, and the convex pad is abutted and connected to the groove.

[0013] As a further solution of the utility model: a supporting plate is fixedly connected to the bottom end of the mounting shell, the bottom end of the supporting plate is abutted and connected to the pressing pad, and both ends of the supporting plate are respectively abutted and connected to the outer shell and the support plate.

[0014] As a further solution of the utility model: a plurality of positioning columns are axially and equidistantly fixedly connected to the top end of the storage groove, a plurality of positioning holes are axially and equidistantly formed in the bottom end of the support plate, and the positioning columns are matched with the positioning holes.

[0015] As a further solution of the utility model: a ring-shaped blocking ring is fixedly connected to the bottom end of the support plate, and the blocking ring is abutted and connected to the inner wall of the outer shell.

[0016] The beneficial effects of the utility model:

[0017] 1. The storage groove opened at the top of the outer shell is used to provide a bearing function. The support plate is installed on the storage groove. The support plate has rigidity. The abutting pad is installed on the support plate. The abutting pad abuts against the inner wall of the outer shell and the support plate respectively. Lubricating oil often seeps out from the gap between the outer shell and the mounting shell. When the support plate is installed on the storage groove, the lubricating oil seeps out from the gap between the support plate and the outer shell. The abutting pad seals the gap between the outer shell and the support plate.

[0018] 2. The connecting pad is installed at the side end of the abutting pad, and the support plate limits the connecting pad. When the abutting pad deforms and the lubricating oil seeps out from the gap between the abutting pad and the support plate, the connecting pad seals the gap generated between the abutting pad and the support plate. In order to further seal between the connecting pad and the abutting pad, the pressing pad fixed to the top end of the connecting pad abuts against the abutting pad. When the mounting shell is installed on the outer shell, the mounting shell abuts against the abutting pad and the connecting pad. The connecting pad and the abutting pad seal the gap layer by layer, increasing the penetration path of the lubricating oil and improving the sealing effect on the lubricating oil. Since the mounting shell abuts against the pressing pad to fully abut against the connecting pad and the abutting pad, when the connecting pad and the abutting pad deform, the connecting pad and the abutting pad fill the space between the support plate and the outer shell, avoiding the phenomenon that the stability between the connecting pad and the abutting pad decreases due to deformation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model with reference to the drawings.

[0020] Figure 1 is the overall structural schematic diagram of the present utility model;

[0021] Figure 2 Schematic diagram of the housing structure of the present utility model;

[0022] Figure 3 A - A sectional view of the housing structure of the present utility model;

[0023] Figure 4 Of the present utility model Figure 3 Enlarged schematic diagram of the structure at position A;

[0024] Figure 5 Schematic diagram of the storage tank structure of the present utility model;

[0025] Figure 6 Schematic diagram of the support plate structure of the present utility model;

[0026] Figure 7 Schematic diagram of the abutting pad structure of the present utility model;

[0027] Figure 8 Schematic diagram of the connection pad structure of the present utility model.

[0028] In the figure: 1, housing; 2, mounting shell; 3, positioning column; 4, positioning hole; 5, blocking ring; 6, support plate; 7, connection pad; 8, convex pad; 9, abutting plate; 10, abutting pad; 11, tooth groove; 12, tooth plate; 13, storage tank; 14, pressing pad; 15, groove. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figures 1-8 shown, a drive rear axle sealing structure for a light truck includes: a housing 1, an abutting pad 10 and a connection pad 7,

[0031] A storage tank 13 is provided at the top of the housing 1. An installation shell 2 is connected to the top end of the housing 1 in a matching manner. The storage tank 13 abuts and connects to a support plate 6. The installation shell 2 is fixed to the top of the housing 1 by bolts. The specific working principle belongs to the prior art. The storage tank 13 provided at the top of the housing 1 is used to provide a bearing function, and the support plate 6 is installed on the storage tank 13. The support plate 6 has rigidity;

[0032] The bottom end of the abutting pad 10 is abutted and connected to the support plate 6, and the side end of the abutting pad 10 is abutted and connected to the outer shell 1. The abutting pad 10 is installed on the support plate 6, and the abutting pad 10 abuts against the inner wall of the outer shell 1 and the support plate 6 respectively. Lubricating oil often seeps out from the gap between the outer shell 1 and the mounting shell 2. When the support plate 6 is installed on the storage tank 13, the lubricating oil seeps out from the gap between the support plate 6 and the outer shell 1. The abutting pad 10 seals the gap between the outer shell 1 and the support plate 6.

[0033] The side end of the connecting pad 7 is abutted and connected to the abutting pad 10, the bottom end of the connecting pad 7 is abutted and connected to the support plate 6, a holding plate 9 is fixedly connected to the top end of the connecting pad 7, and the holding plate 9 is cooperatively connected to the mounting shell 2. The connecting pad 7 is installed on the side end of the abutting pad 10, and the support plate 6 limits the connecting pad 7. When the abutting pad 10 deforms and the lubricating oil seeps out from the gap between the abutting pad 10 and the support plate 6, the connecting pad 7 seals the gap generated between the abutting pad 10 and the support plate 6. In order to further seal between the connecting pad 7 and the abutting pad 10, the pressing pad 14 fixed to the top end of the connecting pad 7 abuts against the abutting pad 10. When the mounting shell 2 is installed on the outer shell 1, the mounting shell 2 abuts against the abutting pad 10 and the connecting pad 7. The connecting pad 7 and the abutting pad 10 seal the gap layer by layer, increasing the penetration path of the lubricating oil and improving the sealing effect on the lubricating oil. Since the mounting shell 2 abuts against the pressing pad 14 to fully abut against the connecting pad 7 and the abutting pad 10, when the connecting pad 7 and the abutting pad 10 deform, the connecting pad 7 and the abutting pad 10 fill the space between the support plate 6 and the outer shell 1, avoiding the phenomenon that the stability between the connecting pad 7 and the abutting pad 10 decreases due to deformation in the prior art.

[0034] In some specific embodiments, a toothed plate 12 is axially and fixedly connected to the inner wall of the outer shell 1. The toothed plate 12 is in a circular ring serrated shape, and a tooth groove 11 is formed in the side end of the abutting pad 10. The toothed plate 12 is in a meshing connection with the tooth groove 11. To ensure the stability of the abutting between the abutting pad 10 and the inner wall of the outer shell 1, the tooth groove 11 and the toothed plate 12 are in a meshing connection to limit the side end of the abutting pad 10, avoiding the phenomenon that the abutting pad 10 is vertically displaced or overturned. When the abutting pad 10 deforms, the tooth groove 11 and the toothed plate 12 abut more tightly, further improving the sealing effect of the abutting pad 10.

[0035] In some specific embodiments, a convex pad 8 is axially and fixedly connected to the side end of the connecting pad 7. One end of the connecting pad 7 away from the abutting pad 10 is abutted and connected to the support plate 6. A groove 15 is axially formed in the side end of the abutting pad 10, and the convex pad 8 is abutted and connected to the groove 15. In order to further improve the sealing effect between the connecting pad 7 and the abutting pad 10, when the convex pad 8 is abutted and connected to the groove 15, the convex pad 8 seals the deformation gap generated between the connecting pad 7 and the abutting pad 10. At the same time, the convex pad 8 and the groove 15 transfer the stability of the abutting pad 10 to the connecting pad 7, thereby ensuring the stability of the connecting pad 7.

[0036] In some specific embodiments, a supporting plate 9 is fixedly connected to the bottom end of the mounting shell 2. The bottom end of the supporting plate 9 is abutted and connected to the pressing pad 14, and both ends of the supporting plate 9 are respectively abutted and connected to the outer shell 1 and the support plate 6. In order to enable the mounting shell 2 to transfer the abutting effect to the connecting pad 7 and the abutting pad 10, when the mounting shell 2 is installed, the supporting plate 9 abuts against the pressing pad 14 to abut against the connecting pad 7 and the abutting pad 10. It should be noted that when the connecting pad 7 and the abutting pad 10 are subjected to the abutting effect of the mounting shell 2, the connecting pad 7 and the abutting pad 10 are deformed by force and filled between the support plate 6 and the outer shell 1. At the same time, the connecting pad 7 and the abutting pad 10 transfer the abutting effect to the support plate 6, thereby ensuring that the support plate 6 abuts against the storage groove 13 and ensuring the stability of the support plate 6.

[0037] In some specific embodiments, a plurality of positioning posts 3 are axially and equidistantly fixedly connected to the top end of the storage groove 13. A plurality of positioning holes 4 are axially and equidistantly formed in the bottom end of the support plate 6. The positioning posts 3 are matched with the positioning holes 4. In order to prevent the support plate 6 from shifting on the storage groove 13, the positioning holes 4 formed in the bottom end of the support plate 6 are installed on the positioning posts 3. The positioning posts 3 position the support plate 6 through the positioning connection with the positioning holes 4, thereby preventing the support plate 6 from shifting in the horizontal direction on the storage groove 13 and ensuring the stability of the support plate 6 on the storage groove 13.

[0038] In some specific embodiments, a ring-shaped blocking ring 5 is fixedly connected to the bottom end of the support plate 6. The blocking ring 5 is abutted and connected to the inner wall of the outer shell 1. In order to prevent lubricating oil from directly entering between the support plate 6 and the storage groove 13 and reduce the working pressure of the abutting pad 10 and the connecting pad 7, the blocking ring 5 fixed to the bottom end of the support plate 6 initially blocks the lubricating oil and reduces the seepage amount of the lubricating oil from between the support plate 6 and the storage groove 13, thereby improving the sealing effect of the connecting pad 7 and the abutting pad 10 on the lubricating oil.

[0039] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A drive rear axle sealing structure for a light truck, characterized in that, Comprising: A housing (1), a storage groove (13) is provided at the top of the housing (1), an installation shell (2) is connected to the top end of the housing (1) in a matching manner, and a support plate (6) is connected to the storage groove (13) in a holding manner; A holding pad (10), the bottom end of the holding pad (10) is connected to the support plate (6) in a holding manner, and the side end of the holding pad (10) is connected to the housing (1) in a holding manner; A connecting pad (7), the side end of the connecting pad (7) is connected to the holding pad (10) in a holding manner, the bottom end of the connecting pad (7) is connected to the support plate (6) in a holding manner, a holding plate (9) is fixedly connected to the top end of the connecting pad (7), and the holding plate (9) is connected to the installation shell (2) in a matching manner.

2. The drive rear axle sealing structure for a light truck according to claim 1, characterized in that A toothed plate (12) is axially and fixedly connected to the inner wall of the housing (1), the toothed plate (12) is in a circular sawtooth shape, a tooth groove (11) is provided at the side end of the holding pad (10), and the toothed plate (12) is in a meshing connection with the tooth groove (11).

3. A drive rear axle sealing structure for a light truck according to claim 1, characterized in that, A convex pad (8) is axially and fixedly connected to the side end of the connecting pad (7), one end of the connecting pad (7) away from the holding pad (10) is connected to the support plate (6) in a holding manner, a groove (15) is axially provided at the side end of the holding pad (10), and the convex pad (8) is connected to the groove (15) in a holding manner.

4. A drive rear axle sealing structure for a light truck according to claim 1, characterized in that A holding plate (9) is fixedly connected to the bottom end of the installation shell (2), the bottom end of the holding plate (9) is connected to a pressing pad (14) in a holding manner, and both ends of the holding plate (9) are connected to the housing (1) and the support plate (6) in a holding manner respectively.

5. A drive rear axle sealing structure for a light truck according to claim 1, characterized in that, A plurality of positioning columns (3) are axially and equidistantly fixedly connected to the top end of the storage groove (13), a plurality of positioning holes (4) are axially and equidistantly provided at the bottom end of the support plate (6), and the positioning columns (3) are matched with the positioning holes (4).

6. The drive rear axle sealing structure for a light truck according to claim 1, characterized in that A circular blocking ring (5) is fixedly connected to the bottom end of the support plate (6), and the blocking ring (5) is connected to the inner wall of the housing (1) in a holding manner.

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