Automobile front drive axle shaft head positioning pin

Abstract

The utility model discloses an automobile front drive axle shaft head positioning pin which comprises a pin head, a connecting column is in threaded connection with the interior of the pin head, a baffle ring is fixedly connected to the bottom of the connecting column, a pin rod is fixedly connected to the bottom of the baffle ring, a cross groove is formed in the top of the connecting column, and a first sealing ring is arranged outside the connecting column in a sleeved mode. According to the positioning pin, the connecting column, the cross groove, the first sealing ring and the pin head are arranged, when the positioning pin is installed, the pin head drives the pin rod to penetrate through the drive axle shaft head through the connecting column and the baffle ring, the pin rod and the drive axle shaft head are connected through the pin sleeve, and when the positioning pin needs to be disassembled, even if the positioning pin is rusted, the pin head can be disassembled, so that the pin rod is not damaged. The pin rod and the pin sleeve are separated through the cross groove, the convenience of dismounting the positioning pin is improved, and the probability of rusting of the drive axle shaft head is reduced through the arrangement of the first sealing ring, the second sealing ring and the third sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a shaft head locating pin for an automobile front drive axle. Background Art

[0002] The drive axle, also known as the drive shaft, is a device that ultimately transmits the input power to the drive wheels. It is installed at the end of the transmission system. The drive axle consists of a final reducer, differential, wheel transmission device and drive axle housing. When assembling the front drive axle of the car, it is necessary to use locating pins to fix the front drive axle shaft head of the car.

[0003] The existing automobile front drive axle shaft head locating pin is a single body. Since the automobile front drive axle shaft head locating pin is affected by the external humid environment, it is easy to rust over time, which makes the locating pin difficult to remove when repairing the automobile front drive axle shaft head. Therefore, a automobile front drive axle shaft head locating pin is needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a locating pin for the shaft head of a front drive axle of an automobile.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a locating pin for the shaft head of a front drive axle of an automobile, comprising a pin head, the internal thread of the pin head is connected to a connecting column, the bottom of the connecting column is fixedly connected to a retaining ring, the bottom of the retaining ring is fixedly connected to a pin rod, the external thread of the pin rod is connected to a pin sleeve, a cross groove is provided on the top of the connecting column, the external sleeve of the connecting column is provided with a first sealing ring, and the bottom of the first sealing ring is in contact with the top of the retaining ring.

[0006] Furthermore, a second sealing ring and a third sealing ring are sleeved on the outer portion of the pin rod, and the second sealing ring is located below the retaining ring.

[0007] Furthermore: a first thread groove is provided inside the pin sleeve, and the pin rod is located inside the first thread groove.

[0008] Furthermore, a second thread groove is formed at the bottom of the pin head, the connecting column is located inside the second thread groove, and the bottom of the pin head fits with the top of the first sealing ring.

[0009] Furthermore: the circumferential surfaces of the pin sleeve and the pin head are both provided with annular grooves, and the number of the annular grooves is set to be multiple and distributed up and down.

[0010] Furthermore, the bottom of the second sealing ring fits in with the top of the third sealing ring, and the bottom of the third sealing ring fits in with the top of the pin sleeve.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, this automobile front drive axle shaft head locating pin is provided with a connecting column, a cross groove, a first sealing ring and a pin head. When installing the locating pin, the pin head is used to drive the pin rod through the drive axle shaft head through the connecting column and the retaining ring, and the pin rod is connected to the drive axle shaft head using the pin sleeve. When the locating pin needs to be disassembled, even if it is rusted, the pin head can be removed and the pin rod and the pin sleeve can be separated using the cross groove, thereby facilitating the overall disassembly of the locating pin, which is conducive to improving the convenience of disassembling the locating pin.

[0013] 2. Compared with the existing technology, this automobile front drive axle shaft head locating pin, by setting the first sealing ring, the second sealing ring and the third sealing ring, uses the first sealing ring to effectively prevent rust between the pin head and the retaining ring, and the second sealing ring and the third sealing ring are respectively located on the upper and lower sides of the drive axle shaft head to prevent rust on both sides of the drive axle shaft head, which is beneficial to reducing the probability of rust on the drive axle shaft head. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a locating pin on the shaft head of a front drive axle of an automobile;

[0015] Figure 2 This is a first-person perspective schematic diagram of the internal structure of a locating pin on the front drive axle of an automobile;

[0016] Figure 3 This is a second-view schematic diagram of the internal structure of a locating pin on the shaft head of a front drive axle of an automobile.

[0017] Legend:

[0018] 1. Pin head; 2. Pin rod; 3. Retaining ring; 4. Connecting column; 5. Cross groove; 6. First sealing ring; 7. Second sealing ring; 8. Third sealing ring; 9. Pin sleeve; 10. Annular groove; 11. First thread groove; 12. Second thread groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Reference Figure 1-3The utility model provides a locating pin for the front drive axle shaft of an automobile: comprising a pin head 1, the internal thread of the pin head 1 is connected to a connecting column 4, the bottom of the connecting column 4 is fixedly connected to a retaining ring 3, the bottom of the retaining ring 3 is fixedly connected to a pin rod 2, the external thread of the pin rod 2 is connected to a pin sleeve 9, the top of the connecting column 4 is provided with a cross groove 5, the external sleeve of the connecting column 4 is provided with a first sealing ring 6, and the bottom of the first sealing ring 6 fits with the top of the retaining ring 3. When installing the locating pin, the pin head 1 is used to drive the pin rod 2 through the drive axle shaft head through the connecting column 4 and the retaining ring 3, and the pin sleeve 9 is used to connect the pin rod 2 to the drive axle shaft head. When the locating pin needs to be disassembled, even if it is rusted, the pin head 1 can be removed and the cross groove 5 can be used to separate the pin rod 2 from the pin sleeve 9, thereby facilitating the overall disassembly of the locating pin, which is conducive to improving the convenience of disassembling the locating pin.

[0021] The outer sleeve of the pin rod 2 is provided with a second sealing ring 7 and a third sealing ring 8, and the second sealing ring 7 is located below the retaining ring 3. When the drive axle shaft head is installed, the second sealing ring 7 and the third sealing ring 8 will be located on the upper and lower sides of the drive axle shaft head respectively.

[0022] A first thread groove 11 is provided inside the pin sleeve 9, and the pin rod 2 is located inside the first thread groove 11. When not installed, the pin rod 2 is accommodated inside the first thread groove 11, which is convenient for protecting the pin rod 2. Even after installation, the pin sleeve 9 can still be used to protect the pin rod 2.

[0023] A second thread groove 12 is formed at the bottom of the pin head 1. The connecting post 4 is located inside the second thread groove 12, and the bottom of the pin head 1 is in contact with the top of the first sealing ring 6. The second thread groove 12 accommodates the connecting post 4, so that the cross groove 5 at the top of the connecting post 4 remains fresh, making it easier to remove the pin rod 2 using the cross groove 5.

[0024] The circumferential surfaces of the pin sleeve 9 and the pin head 1 are both provided with an annular groove 10, and the number of the annular grooves 10 is provided and distributed up and down. The annular grooves 10 are used to enhance the friction between the pin sleeve 9 and the pin head 1, thereby facilitating the rotation of the pin sleeve 9 and the pin head 1.

[0025] The bottom of the second sealing ring 7 fits in with the top of the third sealing ring 8, and the bottom of the third sealing ring 8 fits in with the top of the pin sleeve 9. When the pin sleeve 9 is threadedly connected to the pin rod 2, the pin sleeve 9 squeezes the third sealing ring 8 so that the third sealing ring 8 fits tightly against the bottom of the drive axle shaft head.

[0026] Working principle: When installing the locating pin on the front drive axle shaft head of the automobile, the pin head 1 is used to drive the pin rod 2 through the drive axle shaft head through the connecting column 4 and the retaining ring 3, and the pin rod 2 is connected to the drive axle shaft head using the pin sleeve 9. When disassembly is required, even if rust occurs, the pin head 1 can be removed and the pin rod 2 and the pin sleeve 9 can be separated using the cross groove 5, so as to facilitate the overall disassembly of the locating pin, which is beneficial to improving the convenience of disassembly of the locating pin. The first sealing ring 6, the second sealing ring 7 and the third sealing ring 8 are installed on the locating pin. The first sealing ring 6 can effectively prevent rust between the pin head 1 and the retaining ring 3, and the second sealing ring 7 and the third sealing ring 8 are respectively located on the upper and lower sides of the drive axle shaft head to prevent rust on both sides of the drive axle shaft head, which is beneficial to reduce the probability of rust on the drive axle shaft head.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A locating pin for a front drive axle shaft of an automobile, comprising a pin head (1), characterized in that: The internal thread of the pin head (1) is connected to a connecting column (4), the bottom of the connecting column (4) is fixedly connected to a retaining ring (3), the bottom of the retaining ring (3) is fixedly connected to a pin rod (2), the external thread of the pin rod (2) is connected to a pin sleeve (9), a cross groove (5) is provided on the top of the connecting column (4), and a first sealing ring (6) is provided on the outside of the connecting column (4), and the bottom of the first sealing ring (6) is in contact with the top of the retaining ring (3).

2. The automobile front drive axle shaft head locating pin according to claim 1, characterized in that: The pin rod (2) is externally sleeved with a second sealing ring (7) and a third sealing ring (8), and the second sealing ring (7) is located below the retaining ring (3).

3. The automobile front drive axle shaft head locating pin according to claim 2, characterized in that: A first thread groove (11) is provided inside the pin sleeve (9), and the pin rod (2) is located inside the first thread groove (11).

4. The automobile front drive axle shaft head locating pin according to claim 3, characterized in that: A second thread groove (12) is provided at the bottom of the pin head (1), the connecting column (4) is located inside the second thread groove (12), and the bottom of the pin head (1) is in contact with the top of the first sealing ring (6).

5. The automobile front drive axle shaft head locating pin according to claim 4, characterized in that: The circumferential surfaces of the pin sleeve (9) and the pin head (1) are both provided with an annular groove (10), and the annular grooves (10) are provided in plurality and distributed vertically.

6. The automobile front drive axle shaft head locating pin according to claim 5, characterized in that: The bottom of the second sealing ring (7) fits in with the top of the third sealing ring (8), and the bottom of the third sealing ring (8) fits in with the top of the pin sleeve (9).

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