Saddle adjusting gear shaft

Abstract

The utility model provides a vehicle seat adjusting gear shaft which comprises a transmission shaft and a gear, the gear is movably arranged on the outer side of the transmission shaft in a sleeved mode, a through hole is formed in the transmission shaft, and a limiting assembly is arranged in the through hole. The limiting assembly comprises a round rod, a first spring, a first rectangular plate, a second rectangular plate, a first limiting block, a groove, a second limiting block and a second spring, the round rod is fixedly installed between the front side and the rear side of the inner wall of the through hole, and the first spring is arranged on the outer side of the round rod in a winding mode; through the arrangement of the second limiting groove, the second limiting block, the groove, the second spring, the first limiting block and the first spring, the gear can be conveniently detached from the outer side of the transmission shaft, the detaching efficiency is improved, the gear is independently taken down to be replaced, and the gear can be conveniently detached from the outer side of the transmission shaft. And waste of the transmission shaft is avoided.

Description

Technical Field

[0001] The utility model relates to a gear shaft, in particular to a seat adjustment gear shaft, belonging to the technical field of mechanical transmission. Background Art

[0002] Gear shaft is a key component in mechanical system, which connects gears with gears or other mechanical parts to transmit power and motion. Gear shaft usually has one or more gears, which transmit the rotational motion and torque of one gear to another gear through gear meshing, so as to achieve efficient transmission of power. It is widely used in various mechanical equipment, such as automobiles, ships, machine tools, transmission systems, wind turbines, etc.

[0003] A Chinese patent publication (publication number: CN203627563U) discloses a connection mechanism between a gear and a driving shaft, wherein the gear is mounted on a conical surface of the driving shaft through a key, a thread is formed on the small diameter portion of the conical surface of the driving shaft, and a locking nut is mounted on the thread. The gear is mounted on a conical surface of the driving shaft through a key, a locking nut is mounted on the thread of the small diameter portion of the conical surface, and is pressed together with the gear, an annular groove is formed on the side of the gear covered by the locking nut, an annular soft steel belt is fixedly set in the annular groove, a plurality of cone head screws are screwed into the outer side of the locking nut along the circumferential direction, and the pointed portion of the cone head screw is inserted into the plane of the annular soft steel belt. The utility model has the advantages of reliable operation, long service life of components, and not easy to cause equipment malfunction and safety accidents;

[0004] The gear is fixedly connected to the drive shaft by a locking nut, and the locking nut is not easy to rotate by a plurality of cone head screws. When disassembling the gear, it is first necessary to remove the plurality of cone head screws from the annular soft steel belt to release the fixing of the locking nut, and then the gear can be removed from the outer side of the drive shaft by rotating the locking nut. The disassembly method is relatively cumbersome. Therefore, a seat adjustment gear shaft is proposed. Utility Model Content

[0005] In view of this, the utility model provides a seat adjustment gear shaft to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the utility model is implemented as follows: a seat adjustment gear shaft, including a transmission shaft and a gear, the gear is movably sleeved on the outside of the transmission shaft, a through hole is opened inside the transmission shaft, a limiting component is arranged inside the through hole, and the limiting component includes a circular rod, a first spring, a first rectangular plate, a second rectangular plate, a first limiting block, a groove, a second limiting block and a second spring.

[0007] Further preferably, a circular rod is fixedly installed between the front side of the inner wall and the rear side of the inner wall of the through hole, a first spring is wound around the outer side of the circular rod, one end of the first spring is fixedly connected to the first rectangular plate, and the other end of the first spring is fixedly connected to the second rectangular plate, the first rectangular plate and the second rectangular plate are movably sleeved on the outer side of the circular rod, the upper surface and the lower surface of the first rectangular plate are fixedly installed with a first limit block, the two first limit blocks are symmetrically arranged, the upper surface and the lower surface of the second rectangular plate are movably arranged with a second limit block, the two second limit blocks are symmetrically arranged, the upper surface and the lower surface of the second rectangular plate are provided with a groove, the second limit block is movably arranged inside the groove, and the second spring is fixedly connected to the inner wall on the side where the two grooves are close to each other, and the ends of the second springs away from each other are respectively fixedly connected to the sides of the two second limit blocks close to each other.

[0008] Further preferably, a through hole is formed on one side of the first rectangular plate and the second rectangular plate, and an inner wall of the through hole is in movably contact with an outer side of the circular rod.

[0009] Further preferably, two first limit grooves are provided on the front side of the gear, and the outer side of the first limit block is in movable contact with the inner wall of the first limit groove, and two second limit grooves are provided on the rear side of the gear, and the outer side of the second limit block is in movable contact with the inner wall of the second limit groove.

[0010] Further preferably, guide grooves are provided on the left and right sides of the inner wall of the groove, guide blocks are fixedly installed on the left and right sides of the second limit block, and the outer sides of the guide blocks are in movably contact with the inner walls of the guide grooves.

[0011] Further preferably, the rear side of the second rectangular plate is in movable contact with the rear side of the inner wall of the through hole, and the front side of the first rectangular plate is in movable contact with the front side of the inner wall of the through hole.

[0012] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0013] The utility model makes it easy to disassemble the gear from the outside of the transmission shaft by providing the second limit groove, the second limit block, the groove, the second spring, the first limit block and the first spring, thereby improving the disassembly efficiency, and avoiding the waste of the transmission shaft by removing the gear separately for replacement.

[0014] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is the main axonometric structural diagram of the utility model;

[0017] Figure 2 This is a main sectional isometric structural diagram of the utility model;

[0018] Figure 3 It is a partial main view and cutaway axonometric structure diagram of the utility model;

[0019] Figure 4 This is a front view, sectional, axonometric structural diagram of the second rectangular plate of the present invention.

[0020] Figure numerals: 1. transmission shaft; 2. gear; 3. through hole; 4. first limit groove; 5. limit assembly; 501. circular rod; 502. first spring; 503. first rectangular plate; 504. second rectangular plate; 505. first limit block; 506. groove; 507. second limit block; 508. second spring; 6. through hole; 7. guide groove; 8. guide block; 9. second limit groove. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, an embodiment of the utility model provides a seat adjustment gear shaft, including a transmission shaft 1 and a gear 2, the gear 2 is movably sleeved on the outer side of the transmission shaft 1, a through hole 3 is opened inside the transmission shaft 1, a limit assembly 5 is arranged inside the through hole 3, and the limit assembly 5 includes a circular rod 501, a first spring 502, a first rectangular plate 503, a second rectangular plate 504, a first limit block 505, a groove 506, a second limit block 507 and a second spring 508.

[0024] In one embodiment, a circular rod 501 is fixedly installed between the front side and the rear side of the inner wall of the through hole 3, a first spring 502 is wound around the outer side of the circular rod 501, one end of the first spring 502 is fixedly connected to the first rectangular plate 503, and the other end of the first spring 502 is fixedly connected to the second rectangular plate 504, the first rectangular plate 503 and the second rectangular plate 504 are movably sleeved on the outer side of the circular rod 501, the rear side of the second rectangular plate 504 is movably contacted with the rear side of the inner wall of the through hole 3, the front side of the first rectangular plate 503 is movably contacted with the front side of the inner wall of the through hole 3, the upper surface and the lower surface of the first rectangular plate 503 are fixedly installed with first limit blocks 505, the two first limit blocks 505 are symmetrically arranged, and the upper surface and The lower surface is movably provided with a second limit block 507, and the two second limit blocks 507 are symmetrically arranged. The upper surface and the lower surface of the second rectangular plate 504 are provided with grooves 506, and the second limit block 507 is movably arranged inside the groove 506. A second spring 508 is fixedly connected to the inner wall on the side where the two grooves 506 are close to each other, and the ends of the second springs 508 that are away from each other are respectively fixedly connected to the sides where the two second limit blocks 507 are close to each other. The gear 2 is limited by the two first limit blocks 505 and the two second limit blocks 507, and under the setting of the first spring 502, the two first limit blocks 505 are tightly engaged with the first limit groove 4, and the two second limit blocks 507 are tightly engaged with the second limit groove 9.

[0025] In one embodiment, a through hole 6 is opened on one side of the first rectangular plate 503 and the second rectangular plate 504, and the inner wall of the through hole 6 is in movably contact with the outer side of the circular rod 501. Through the set through hole 6, the first rectangular plate 503 and the second rectangular plate 504 are movably set on the outer side of the circular rod 501.

[0026] In one embodiment, two first limit grooves 4 are provided on the front side of the gear 2, and the outer side of the first limit block 505 is in movable contact with the inner wall of the first limit groove 4. Two second limit grooves 9 are provided on the rear side of the gear 2, and the outer side of the second limit block 507 is in movable contact with the inner wall of the second limit groove 9. The two first limit grooves 4 are used to limit the two first limit blocks 505, and the two second limit blocks 507 are used to limit the two second limit grooves 9.

[0027] In one embodiment, guide grooves 7 are provided on the left and right sides of the inner wall of the groove 506, and guide blocks 8 are fixedly installed on the left and right sides of the second limit block 507. The outer side of the guide block 8 is in movably contact with the inner wall of the guide groove 7, and the guide block 8 cooperates with the guide groove 7 to guide the movement of the two second limit blocks 507.

[0028] The utility model is in operation: when the gear 2 needs to be removed from the outer side of the transmission shaft 1, the gear 2 is pushed forward. At this time, the gear 2 drives the second limiting groove 9 to move forward and generates a gap between the second limiting block 507 and the second limiting block 507. At the same time, the two second limiting blocks 507 are pressed inwardly, so that the second limiting block 507 drives the guide block 8 to slide inward along the guide groove 7 to the inside of the groove 506. The second limiting block 507 moves and generates an extrusion force on the second spring 508, so that the second spring 508 is compressed. At this time, the second limiting block 507 is separated from the second limiting groove 9, and the gear 2 can be pushed backward to remove the gear 2 from the outer side of the transmission shaft 1, so that the gear 2 can be easily removed from the outer side of the transmission shaft 1. There is no need to remove the gear 2 by rotating the screw, which improves the disassembly efficiency. In addition, the method of removing the gear 2 alone for replacement avoids the waste of the transmission shaft 1.

[0029] When replacing, the two second limit blocks 507 are pressed inward again to make them shrink into the inside of the groove 506 again. At this time, the gear 2 is pushed forward until the front side of the gear 2 contacts the rear side of the first rectangular plate 503 and the two first limit blocks 505 are engaged with the corresponding first limit groove 4. At the same time, the first spring 502 is stretched. Then, the pressure on the second limit block 507 is released, and the compressed second spring 508 is reset, so that the two second limit blocks 507 are engaged with the corresponding second limit groove 9. At this time, the stretched first spring 502 is reset, so that the two first limit blocks 505 are tightly engaged with the corresponding first limit groove 4, and the two second limit blocks 507 are tightly engaged with the corresponding second limit groove 9. Under the action of the two second limit blocks 507 and the two first limit blocks 505, the gear 2 is limited, and the replacement of the gear 2 can be completed.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A seat adjustment gear shaft, characterized in that: The invention comprises a transmission shaft (1) and a gear (2), wherein the gear (2) is movably sleeved on the outer side of the transmission shaft (1), a through hole (3) is provided inside the transmission shaft (1), a limit assembly (5) is arranged inside the through hole (3), and the limit assembly (5) comprises a circular rod (501), a first spring (502), a first rectangular plate (503), a second rectangular plate (504), a first limit block (505), a groove (506), a second limit block (507) and a second spring (508).

2. The seat adjustment gear shaft according to claim 1, characterized in that: A circular rod (501) is fixedly installed between the front side of the inner wall and the rear side of the inner wall of the through hole (3); a first spring (502) is wound around the outer side of the circular rod (501); one end of the first spring (502) is fixedly connected to a first rectangular plate (503); the other end of the first spring (502) is fixedly connected to a second rectangular plate (504); the first rectangular plate (503) and the second rectangular plate (504) are movably sleeved on the outer side of the circular rod (501); first limit blocks (505) are fixedly installed on the upper surface and the lower surface of the first rectangular plate (503); the two first limit blocks (505) are fixedly installed on the outer side of the circular rod (501); The second rectangular plate (504) and the second rectangular plate (505) are symmetrically arranged, the upper surface and the lower surface of the second rectangular plate (504) are both movably provided with second limit blocks (507), the two second limit blocks (507) are symmetrically arranged, the upper surface and the lower surface of the second rectangular plate (504) are both provided with grooves (506), the second limit blocks (507) are movably arranged inside the grooves (506), the inner walls of the two grooves (506) on the sides close to each other are both fixedly connected with second springs (508), and the ends of the second springs (508) that are away from each other are respectively fixedly connected to the sides of the two second limit blocks (507) that are close to each other.

3. The seat adjustment gear shaft according to claim 2, characterized in that: A through hole (6) is provided on one side of the first rectangular plate (503) and the second rectangular plate (504), and the inner wall of the through hole (6) is in movably contact with the outer side of the circular rod (501).

4. The seat adjustment gear shaft according to claim 2, characterized in that: Two first limiting grooves (4) are provided on the front side of the gear (2), and the outer side of the first limiting block (505) is in movable contact with the inner wall of the first limiting groove (4); two second limiting grooves (9) are provided on the rear side of the gear (2), and the outer side of the second limiting block (507) is in movable contact with the inner wall of the second limiting groove (9).

5. The seat adjustment gear shaft according to claim 2, characterized in that: A guide groove (7) is provided on the left side and the right side of the inner wall of the groove (506), and a guide block (8) is fixedly installed on the left side and the right side of the second limit block (507), and the outer side of the guide block (8) is in active contact with the inner wall of the guide groove (7).

6. The seat adjustment gear shaft according to claim 2, characterized in that: The rear side of the second rectangular plate (504) is in active contact with the rear side of the inner wall of the through hole (3), and the front side of the first rectangular plate (503) is in active contact with the front side of the inner wall of the through hole (3).

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