Transmission gear box mechanism of automobile seat
By designing a combined structure of synchronous gears, double pinions, and double large gears, the problems of high noise and low efficiency in automotive seat transmission devices were solved, achieving low-noise, high-efficiency transmission and rapid movement.
Patent Information
- Application Number
- CN202423319346.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing automotive seat transmission devices suffer from problems such as high operating noise, low efficiency, and high manufacturing difficulty.
It adopts a combination structure of synchronous gear, double pinion, double large gear and output nut gear. The tooth profile is designed as helical teeth and the number of teeth is reasonably configured. The synchronous gear and the double pinion are parallel, and the double large gear and the output nut gear are perpendicular. The high-efficiency transmission is achieved by motor drive.
It reduces operating noise, improves transmission efficiency, and increases the speed at which car seats can move.
Smart Images
Figure CN223469684U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a gear box mechanism, and specifically discloses an automobile seat transmission gear box mechanism. BACKGROUND
[0002] At present, most of the automobile seat transmission devices still use a first-stage worm gear mechanism, which makes the automobile seat transmission device have large operation noise, low efficiency and slow moving speed, and the first-stage worm gear mechanism also has the shortcoming of difficult processing. SUMMARY
[0003] The utility model discloses a kind of automobile seat transmission gear box mechanisms of overcoming the deficiency existing in prior art, with smaller operation noise and higher operating efficiency.
[0004] According to the technical scheme provided by the utility model, the automobile seat transmission gear box mechanism includes a gear box body and a gear box cover plate, a synchronous gear, a double small gear, a double large gear and an output nut gear are arranged in the gear box body, the synchronous gear has a tooth-shaped outer circle and an input end fitting inner circle, the double small gear has a tooth-shaped outer circle, the double large gear has a tooth-shaped outer circle, and the output nut gear has a tooth-shaped outer circle and a threaded inner circle;The synchronous gear is engaged with the double small gear, the double small gear and the double large gear are coaxially fixed together, and the double large gear is engaged with the tooth-shaped outer circle of the output nut gear.
[0005] Preferably, the axis of the synchronous gear is parallel to the axis of the double small gear, and the axis of the double large gear is perpendicular to the axis of the output nut gear.
[0006] Preferably, the number of teeth of the synchronous gear is greater than the number of teeth of the double small gear, and the number of teeth of the double large gear is greater than the number of teeth of the output nut gear.
[0007] Preferably, the input end fitting inner circle of the synchronous gear is a spline inner circle.
[0008] Preferably, the outer circle tooth shapes of the synchronous gear, the double small gear, the double large gear and the output nut gear are all helical teeth.
[0009] The utility model has the characteristics of smaller operation noise and higher operating efficiency, and using the utility model can speed up the moving speed of the automobile seat. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 is the perspective view of the utility model.
[0011] Fig. 2 is the sectional view of the utility model.
[0012] Fig. 3 is an exploded view of the utility model. DETAILED DESCRIPTION
[0013] In order to make the utility model embodiment purposes, technical schemes and advantages more clear, below will combine the drawings in the utility model embodiment, the technical scheme of the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of the utility model protection.
[0014] A kind of automobile seat transmission gear box mechanism, as shown in Figs. 1-3 It includes gear box body 1 and gear box cover plate 2, synchronous gear 3, double small pinion 4, double big gear 5 and output nut gear 6 are equipped in the gear box body 1, synchronous gear 3 has toothed outer circle and input end adaptation inner circle, double small pinion 4 has toothed outer circle, double big gear 5 has toothed outer circle, output nut gear 6 has toothed outer circle and threaded inner circle;Synchronous gear 3 is engaged with double small pinion 4, double small pinion 4 and double big gear 5 are coaxially fixed together, and the toothed outer circle of double big gear 5 is engaged with the toothed outer circle of output nut gear 6.
[0015] The axis of synchronous gear 3 and the axis of double small pinion 4 are parallelly arranged, and the axis of double big gear 5 and the axis of output nut gear 6 are vertically arranged.
[0016] The input end adaptation inner circle of synchronous gear 3 is spline inner circle.
[0017] When working, motor and gear box body 1 are fixed with automobile seat, the output rod end of synchronous rod driven by motor is engaged with the input end adaptation inner circle of synchronous gear 3, the screw rod fixed with seat track is installed in the threaded inner circle of output nut gear 6, motor rotates, drives synchronous gear 3 through synchronous rod, synchronous gear 3 drives double small pinion 4, double small pinion 4 and double big gear 5 are linked, and double big gear 5 drives output nut gear 6, so that output nut gear 6 rotates, thereby making automobile seat move along the length direction of seat track.
[0018] Because the outer circle tooth shape of synchronous gear 3, double small pinion 4, double big gear 5 and output nut gear 6 is all helical tooth, the running noise between synchronous gear 3 and double small pinion 4, and between double big gear 5 and output nut gear 6 is smaller, and transmission efficiency is higher.
[0019] Because the number of teeth of the synchronization gear 3 is greater than the number of teeth of the double pinion gear 4, the number of teeth of the double gear wheel 5 is greater than the number of teeth of the output nut gear 6, so that the automobile seat can move at a faster speed relative to the seat rail.
[0020] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.
Claims
1. A transmission gear box mechanism for a car seat comprising a gear box body (1) and a gear box cover plate (2), characterized in that The gear box body (1) is internally provided with a synchronous gear (3), a double small gear (4), a double large gear (5) and an output nut gear (6), the synchronous gear (3) has a tooth-shaped outer circle and an input end adaptive inner circle, the double small gear (4) has a tooth-shaped outer circle, the double large gear (5) has a tooth-shaped outer circle, and the output nut gear (6) has a tooth-shaped outer circle and a threaded inner circle; the synchronous gear (3) is engaged with the double small gear (4), the double small gear (4) and the double large gear (5) are coaxially fixed together, and the double large gear (5) is engaged with the tooth-shaped outer circle of the output nut gear (6).
2. The automotive seat transmission gear case mechanism of claim 1, wherein: The axis of the synchronous gear (3) is parallel to the axis of the double small gear (4), and the axis of the double large gear (5) is perpendicular to the axis of the output nut gear (6).
3. The automotive seat transmission gear case mechanism of claim 2, wherein: The number of teeth of the synchronous gear (3) is greater than the number of teeth of the double small gear (4), and the number of teeth of the double large gear (5) is greater than the number of teeth of the output nut gear (6).
4. The automotive seat transmission gear case mechanism of claim 1, wherein: The input end adaptive inner circle of the synchronous gear (3) is a spline inner circle.
5. The automotive seat transmission gear case mechanism of claim 1, wherein: The outer circle tooth shapes of the synchronous gear (3), the double small gear (4), the double large gear (5) and the output nut gear (6) are all helical teeth.