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CN-122008980-A - Electric adjusting device for height of automobile seat

CN122008980ACN 122008980 ACN122008980 ACN 122008980ACN-122008980-A

Abstract

The electric regulator for the height of the automobile seat comprises a worm gear reduction box body, a driving motor, a worm wheel, a worm eccentric shaft, a self-lubricating sleeve, a guide slide plate sliding guide seat, a self-lubricating sleeve and a self-lubricating sleeve, wherein the driving motor is fixed with the worm gear reduction box body, a driving motor shaft is formed into a worm, the worm wheel is arranged in a box cavity and meshed with the worm, the left side of the worm wheel is formed into the worm eccentric shaft, and the guide slide plate, the driving gear, the output gear set and the box cover are sequentially arranged from right to left. The novel clutch has the advantages of simplifying the structure, reducing the manufacturing difficulty and cost, optimizing the friction pair relation of motion conversion, improving the transmission efficiency, reducing the noise, prolonging the service life, along with small volume, improving the assembly efficiency and reducing the maintenance cost.

Inventors

  • ZOU YAOZHONG
  • YANG GUANG
  • GONG KE

Assignees

  • 江苏忠明祥和精工股份有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. An electric adjusting device for the height of a car seat comprises a worm gear reduction box body (1), a driving motor (2), a worm wheel (3) and a worm wheel eccentric shaft (31), wherein the driving motor (2) is fixed with the worm gear reduction box body (1), a driving motor shaft of the driving motor (2) is formed into a worm (21) and stretches into a box cavity (11) of the worm gear reduction box body (1), the worm wheel (3) is rotatably arranged in the box cavity (11) and meshed with the worm (21), a worm wheel eccentric shaft (31) is formed at the left side of the worm wheel (3), a guide sliding plate (4), a driving gear (5), an output gear set (6) and a box cover (7) are sequentially arranged from right to left, the worm wheel eccentric shaft (31) is sequentially matched with the guide sliding plate (4) and the driving gear (5), the right side of the driving gear (5) is matched with the guide sliding plate (4), the driving gear (5) is meshed with an output gear set (6), the output gear set (6) stretches to the center of the box cover (7) and is matched with the left side of the car seat in a use state, the height of the box cover (1) is adjusted, the self-lubricating device is characterized by further comprising a self-lubricating sleeve (8) and a guide slide sliding guide seat (9), wherein the self-lubricating sleeve (8) is sleeved on the worm wheel eccentric shaft (31) and rotates along with the rotation of the worm wheel eccentric shaft (31), the guide slide sliding guide seat (9) is positioned between the box cover (7) and one opposite side of the worm gear reduction box body (1) and is fixed between the box cover (7) and the worm gear reduction box body (1) when the box cover (7) is fixed with the worm gear reduction box body (1), the guide slide sliding guide seat (9) is provided with a guide slide plate sliding cavity (91), the guide slide plate (4) is slidingly arranged in the guide slide plate sliding cavity (91), and the self-lubricating sleeve (8) is matched with the worm wheel eccentric shaft (31), the guide slide plate (4) and the driving gear (5).
  2. 2. The electric car seat height adjusting device according to claim 1, characterized in that a worm wheel pivot support shaft (111) is provided in a center position of a box body bottom wall of the box body (11) in the box body (11) of the worm wheel reduction box body (1) in a state perpendicular to the box body bottom wall, the worm wheel (3) is rotatably fitted over the worm wheel pivot support shaft (111) through a worm wheel shaft hole (32) formed in a center position thereof, a worm wheel eccentric shaft center hole (311) is provided in an axial center of the worm wheel eccentric shaft (31) and in a position corresponding to the worm wheel shaft hole (32), and a left end of the worm wheel pivot support shaft (111) is supported on the output gear set (6) after passing through the worm wheel shaft hole (32) and the worm wheel eccentric shaft center hole (311) in order.
  3. 3. The electric car seat height adjusting device according to claim 2, wherein a damping torsion spring (1111) is sleeved on the worm wheel pivot supporting shaft (111) and at a position corresponding to the right side of the worm wheel (3), a damping torsion spring cavity (33) recessed in the right side surface of the worm wheel (3) is formed at the center position of the right side of the worm wheel (3), a damping torsion spring arm embedded compensation groove (34) and a damping torsion spring positioning foot embedded hole (35) are formed at the right side of the worm wheel (3), the damping torsion spring (1111) is matched with the damping torsion spring cavity (33), a damping torsion spring arm (11111) of the damping torsion spring (1111) is embedded with the damping torsion spring arm embedded compensation groove (34), a damping torsion spring arm positioning foot (11112) formed at the tail end of the damping torsion spring arm (11111) is embedded into the damping torsion spring positioning foot embedded hole (35), the damping torsion spring (1111) is a blind hole, and the non-metal is polyurethane elastomer, high glass reinforced polyamide or unvulcanized rubber.
  4. 4. The electric car seat height adjusting device according to claim 1, characterized in that self-lubricating bush positioning blocks (312) protruding from the surface of the worm wheel eccentric shaft (31) are formed on the outer wall of the worm wheel eccentric shaft (31) at intervals at the junction of the right end of the worm wheel eccentric shaft (31) and the left side of the worm wheel (3), and self-lubricating bush positioning block fitting notches (81) equal in number to the self-lubricating bush positioning blocks (312) are formed on the right end face of the self-lubricating bush (8) and at positions corresponding to the self-lubricating bush positioning blocks (312), the self-lubricating bush positioning block fitting notches (81) are fitted with the self-lubricating bush positioning blocks (312), and a self-lubricating bush opening (82) for holding the self-lubricating bush (8) tightly against the eccentric shaft (31) by shrinkage deformation when being fitted on the worm wheel eccentric shaft (31) is also formed on the self-lubricating bush (8).
  5. 5. The electric adjusting device for the height of the automobile seat according to claim 1, wherein the shape of the guide slide sliding cavity outline of the guide slide sliding cavity (91) of the guide slide sliding guide seat (9) is matched with the shape of the outer outline of the guide slide (4), a sliding sleeve through hole (41) is formed in the middle of the guide slide (4), a driving gear limiting jaw guide slot (411) is formed in the sliding sleeve through hole (41) in an upward and downward extending mode, a driving gear center hole (51) is formed in the center position of the driving gear (5), a driving gear limiting jaw (52) is formed in the upper portion and the lower portion of the right side face of the driving gear (5) in a extending mode at positions corresponding to the driving gear limiting jaw guide slot (411), the driving gear limiting jaw (52) stretches into the driving gear limiting jaw guide slot (411), and the self-lubricating sleeve (8) is matched with the sliding sleeve through hole (41) and the driving gear center hole (51).
  6. 6. The electric vehicle seat height adjusting device according to claim 5, wherein a guide slide arc-shaped flange chamber (911) is formed at each of the upper and lower portions of the guide slide chamber (91) and at each of the positions corresponding to each other, a guide slide rectangular flange chamber (912) is formed at each of the front and rear sides of the guide slide chamber (91) and at each of the positions corresponding to each other, the guide slide arc-shaped flange chamber (911) and the guide slide rectangular flange chamber (912) are formed in a spaced-apart positional relationship with each other, a guide slide arc-shaped flange (42) is formed at each of the upper and lower portions of the guide slide (4) and at each of the positions corresponding to each other, and a guide slide rectangular flange (43) is formed at each of the front and rear sides of the guide slide (4) and at each of the positions corresponding to each other, the guide slide arc-shaped flange (42) and the guide slide rectangular flange (43) are formed in a spaced-apart positional relationship with each other, and the guide slide arc-shaped flange chamber (911) is slidingly engaged with the guide slide arc-shaped flange chamber (912), and the guide slide rectangular flange (912) is slidingly engaged with the guide slide rectangular flange chamber (912).
  7. 7. The electric car seat height adjusting device according to claim 2, wherein the output gear set (6) comprises an output gear seat (61) and an output gear (62), a gear ring cavity (611) is formed on the right side of the output gear seat (61), an inner gear ring (612) is formed on the gear ring cavity side wall of the gear ring cavity (611) and around the circumference direction of the gear ring cavity side wall, a gasket cavity (613) recessed in the gear ring cavity bottom wall is formed in the center position of the gear ring cavity bottom wall of the gear ring cavity (611), a worm pivoting support shaft supporting hole (6131) is formed in the center position of the gasket cavity (613), the output gear (62) is formed in the center position of the left side face of the output gear seat (61), the output gear (62) extends to the left side of the box cover (7) and a supporting shaft head (621) is extended in the center position of the left end face of the output gear (62), the supporting shaft head (621) is rotatably supported on the car seat in the use state, the left end of the worm wheel (111) is supported in the driving shaft (612) and the driving shaft (612) is meshed with the worm supporting shaft (612).
  8. 8. The electric car seat height adjusting device as set forth in claim 7, characterized in that an output gear relief hole (71) is formed in the center of the box cover (7), the output gear (62) extends to the left side of the box cover (7) through the output gear relief hole (71), an output gear positioning gap eliminating sleeve (622) is sleeved on the output gear (62) and located at the junction of the output gear (62) and the output gear seat (61), a sealing gasket (6132) is arranged in the sealing gasket cavity (613), a sealing ring (61321) is arranged at the left side of the sealing gasket (6132), the sealing gasket (6132) and the cavity wall of the sealing gasket cavity (613) form a sealing relation, a supporting shaft through hole (61322) is formed in the center of the sealing gasket (6132), and the left end of the pivoting supporting shaft (111) penetrates through the supporting shaft through hole (61322) and then is supported in the worm wheel pivoting supporting hole (6131).
  9. 9. The electric car seat height adjusting device according to claim 1, characterized in that a set of cover fixing seats (12) are formed on the outer wall of the worm gear reduction box body (1) at intervals, cover fixing seat screw holes (121) are formed on the set of cover fixing seats (12), a set of guide seat fixing lugs (92) are formed on the guide slide sliding guide seat (9) and extend at intervals at positions corresponding to the set of cover fixing seats (12), guide seat fixing lug screw through holes (921) are formed on the set of guide seat fixing lugs (92) and at positions corresponding to the cover fixing seat screw holes (121), a set of cover fixing screws (72) are formed on the cover (7) and at positions corresponding to the guide seat fixing lug screw holes (921) on the set of guide seat fixing lugs (92), the cover (7) and the left side of the worm gear reduction box body (1) are fixed by the set of cover fixing screws (72) through the guide seat fixing lug screw through holes (921) and screwed into the cover fixing seat screw holes (121), wherein the cover (7) and the cover (731) are fixed at positions corresponding to the front and rear sides of the cover (73) and are fixed by the wing (73), the fixed wing fixing hole (731) is fixed to the car seat by a fastener at a position corresponding to a height adjusting mechanism in the car seat.
  10. 10. The electric car seat height adjusting device according to claim 1, wherein a worm supporting shaft head (211) is formed at the rear end part of a worm (21) of the driving motor (2), the worm supporting shaft head (211) is rotatably supported on the cavity wall of the box cavity (11), and the driving motor (2) is a direct current motor with a forward and reverse rotation function.

Description

Electric adjusting device for height of automobile seat Technical Field The invention belongs to the technical field of automobile parts, and particularly relates to an electric adjusting device for the height of an automobile seat Background The automobile seat height adjustment is a standard function of modern vehicles, and has positive significance not limited to the following aspects, namely, the field of view is optimized, and the safety is improved. The driver can adjust the vehicle to a proper height, so that the best front and engine cover vision can be ensured, the rear road condition can be seen through the inside rearview mirror, the distance between the vehicle head and the obstacle can be accurately judged, the vision blind area can be effectively reduced, and the vehicle head is favorable for ensuring the correct driving posture and accurate control. The driver can naturally hold the steering wheel to keep the arms slightly bent due to the proper height, and the safety is improved, so that the protection effect is realized. Because the seat height is directly related to whether the seat belt can pass through the middle of the shoulder and whether the head can be within the effective protection of the headrest. And fourthly, the safety belt can hurt the neck or whiplash in collision due to the wrong posture, and the comfort is improved due to the adaptation to different statures. As this function takes into account the ergonomic differences. And fifthly, the driver with short stature can heighten the seat to be trapped in the vehicle, and the driver with high stature can lower the seat to obtain sufficient head space, so that the convenience of getting on and off the vehicle is improved. Because the seat can automatically retreat after flameout of part of the vehicle types, the vehicle is convenient to get off. When the chair is started again, the chair automatically returns to the memory position. Therefore, the trouble of repeated adjustment is also saved for the one-key memory function under the condition of frequent replacement. The "car seat height adjusting device" recommended by chinese patent CN222148251U compensates for the general disadvantages of the four aspects of the prior art outlined in its background section and faithfully honors the corresponding technical effects outlined in its technical effects section. However, the CN222148251U still has the defects of complex transmission path and more parts, and the transmission path comprises a motor shaft (worm), a worm wheel, a sun gear, three planetary gears, an output gear seat and an output gear. The composite structure of the worm gear and the planetary gear train is adopted, so that a large number of independent or combined parts are required, the requirements on the die and the assembly precision are extremely strict, the meshing gaps among the three planetary gears, the sun gear and the inner gear ring are difficult to be uniform, so that the noise is large, the clamping stagnation or the uneven stress is easy to be caused, the transmission efficiency and the service life are influenced, the structure is complex, the material cost and the manufacturing cost are high, and the assembly is complicated, so that the manufacturing efficiency is influenced. The typical solutions involved, such as CN105978217a provided with "a high strength motor assembly for raising the seat", are based on the shortfalls of CN103182959a (seat tilting mechanism for car seats), CN202448774U (a cross-slide gear system), and do not use the structural principle of CN222148251U as described before. The CN105978217a can objectively realize the technical effects described in the technical effect column of the specification, but the technical problems still exist that firstly, because the guide slide plate and the reduction gearbox body form a sliding pair relationship, the reduction gearbox body bears a strict guide function, a pair of arc-shaped notches, a pair of limit grooves and a pair of strip-shaped grooves are required to be formed on one side of the reduction gearbox body, which faces the reduction gearbox cover, and a pair of arc-shaped convex surfaces, a pair of limit lugs and a pair of outwards-protruding limit strips matched with the guide slide plate are processed on the guide slide plate, so that the manufacturing difficulty and the manufacturing cost of the reduction gearbox body, namely the worm gear reduction gearbox body, are obviously increased, secondly, because the guide slide plate and the complex wall body of the reduction gearbox body form a sliding pair, on the one hand, the manufacturing difficulty is high, the processing precision is difficult to ensure, the maintenance cost after abrasion is high, and even the whole reduction gearbox body is scrapped, thirdly, because the reduction gearbox body and the guide slide plate are made of metal materials, so that the friction coefficient of the direct contact between metal and metal is hi