阅读说明：本技术 一种单向器 (One-way clutch ) 是由 姚国平 于 2020-05-06 设计创作，主要内容包括：本发明提供了一种单向器,属于单向器技术领域。它解决了现有的单向器体积较大的问题。本单向器,包括空心轴,空心轴内穿设有花键轴,花键轴上设有外螺旋花键,空心轴的内侧壁上开设有内螺旋花键,花键轴与空心轴花键连接,花键轴的一端具有驱动齿轮,驱动齿轮与花键轴一体成型,驱动齿轮位于靠近外螺旋花键的一端。本单向器体积较小,行程不变,不易与车体的其他零部件发生干涉。(The invention provides an isolator, and belongs to the technical field of isolators. It has solved the great problem of current isolator volume. The isolator comprises a hollow shaft, wherein a spline shaft is arranged in the hollow shaft in a penetrating manner, an external spiral spline is arranged on the spline shaft, an internal spiral spline is arranged on the inner side wall of the hollow shaft and connected with a spline of the hollow shaft, a driving gear is arranged at one end of the spline shaft and integrally formed with the spline shaft, and the driving gear is located at one end close to the external spiral spline. The one-way valve has small volume and unchanged stroke, and is not easy to interfere with other parts of a vehicle body.)

1. The utility model provides a one-way clutch, includes hollow shaft (1), wear to be equipped with integral key shaft (2) in hollow shaft (1), its characterized in that, be equipped with external helical spline (21) on integral key shaft (2), internal helical spline (11) have been seted up on the inside wall of hollow shaft (1), integral key shaft (2) and hollow shaft (1) splined connection, the one end of integral key shaft (2) has drive gear (22), drive gear (22) and integral key shaft (2) integrated into one piece, drive gear (22) are located the one end that is close to external helical spline (21).

2. The isolator according to claim 1, characterized in that a limiting shoulder (12) is arranged on the inner wall of the hollow shaft (1), a pressure spring (3) is sleeved on the spline shaft (2), a limiting ring (4) is sleeved on the other end of the spline shaft (2), a clamp spring (5) is arranged at the other end of the spline shaft (2), the clamp spring (5) is clamped on the limiting ring (4), and the pressure spring (3) is arranged between the limiting shoulder (12) and the limiting ring (4).

3. The isolator according to claim 1, wherein the hollow shaft (1) is provided with an abdicating slot (13), and the spacing ring (4) can be embedded into the abdicating slot (13).

4. A one-way clutch according to claim 1, 2 or 3, wherein the spline shaft (2) comprises a connecting portion (23) and a moving portion (24), the pressure spring (3) is fitted over the moving portion (24), the male helical spline (21) is provided on the connecting portion (23), the drive gear (22) is provided at one end of the connecting portion (23), and the diameter of the connecting portion (23) is larger than that of the moving portion (24).

5. A one-way clutch according to claim 1, 2 or 3, wherein the end of the driving gear (22) abuts against the end of the hollow shaft (1).

Technical Field

The invention belongs to the technical field of isolators, and relates to an isolator.

Background

The isolator is a product that must be provided at the start of the engine. The structure of the existing isolator is that a driving shell drives a telescopic driving shaft to add the power of a starter to a flywheel of an engine to realize starting. And in the initial stage, the starting device works and transmits power to the engine through the one-way clutch so as to drive the engine to work. When the engine is started and the rotating speed of the engine is greater than that of the starting device, the starting device completes the task and is automatically separated from the engine.

For example, the chinese patent application (patent application No. 201420295311.0) discloses an isolator assembly, which comprises a spline shaft and a hollow shaft, wherein the hollow shaft is sleeved on the spline shaft, one end of the spline shaft is provided with a driving gear, one side of the driving gear opposite to the end of the spline shaft is provided with a limit ring, the other side of the driving gear opposite to the end of the hollow shaft is provided with a support bearing, the end of the spline shaft is provided with a snap spring, and the snap spring is clamped on.

Above-mentioned structure is spacing on the integral key shaft through spacing collar, support bearing and jump ring with drive gear to because the integral key shaft need be connected with drive gear, stretch out the one end of integral key shaft hollow shaft and be connected with drive gear, thereby the length that needs the integral key shaft is longer, thereby it is great to lead to the size of isolator, influences the use and the installation of isolator, and take place to interfere to other spare parts in the automobile body easily.

Disclosure of Invention

The invention aims to provide an isolator aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to solve the problem that the volume of the existing one-way valve is large.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a one-way clutch, includes the hollow shaft, wear to be equipped with the integral key shaft in the hollow shaft, its characterized in that, be equipped with external helical spline on the integral key shaft, internal helical spline has been seted up on the inside wall of hollow shaft, integral key shaft and hollow shaft splined connection, the one end of integral key shaft has drive gear, drive gear and integral key shaft integrated into one piece, drive gear is located the one end that is close to external helical spline.

The working principle is as follows: the spline shaft and the hollow shaft spline can be directly connected by integrally forming the driving gear and the spline shaft, so that the connecting space between the driving gear and the spline shaft is saved, other connecting pieces are not needed between the driving gear and the spline shaft for connection and limiting, the length of the spline shaft is reduced, the reduction of the volume of the whole isolator is realized under the condition of ensuring the unchanged stroke of the isolator, the compactness of the assembly of the isolator is improved, the installation of the isolator is facilitated, and the isolator is less in volume and is not easy to interfere with other parts in a vehicle body; and the stability of being connected between spline shaft and the hollow shaft has been increased, and drive gear sets up the one end that is close to external helical spline for the isolator is when moving, and the drive gear can stable operation, has promoted the stability of isolator.

In foretell isolator, be equipped with spacing fender shoulder on the inner wall of hollow shaft, the cover is equipped with the pressure spring on the integral key shaft, the cover is equipped with the spacing collar on the other end of integral key shaft, the other end of integral key shaft is equipped with the jump ring, the jump ring joint is on the spacing collar, the pressure spring setting is between spacing fender shoulder and spacing collar.

The setting of this structure is equipped with the pressure spring with the other end of integral key shaft for the integral key shaft can play the cushioning effect when the operation, and can keep off the jump ring spacing keep off between shoulder and spacing collar, further reduction the volume of isolator.

In the isolator, the hollow shaft is provided with the abdicating notch, and the limiting ring can be embedded into the abdicating notch.

In foretell isolator, the integral key shaft includes connecting portion and removal portion, the pressure spring cover is established on the removal portion, the external spiral spline sets up on connecting portion, drive gear sets up the one end at connecting portion, the diameter of connecting portion is greater than the diameter of removal portion.

The external helical spline is arranged on the connecting portion, the driving gear is arranged at one end of the connecting portion, and the external helical spline can be increased in forward movement, so that the strength of torque transmission of the external helical spline is improved, and the performance of the one-way clutch is further improved.

In the above-described one-way clutch, an end of the drive gear abuts against an end of the hollow shaft.

Compared with the prior art, this isolator has the advantage: through with drive gear and integral key shaft integrated into one piece, can directly be with integral key shaft and hollow shaft splined connection, saved the connection space of drive gear with the integral key shaft, realized reducing the volume of whole isolator under the unchangeable circumstances of the stroke of guaranteeing the isolator, made things convenient for the installation of isolator, and because the isolator volume is less, be difficult for taking place to interfere with other spare parts in the automobile body and take place to interfere

Drawings

Fig. 1 is a sectional view of the present isolator.

In the figure, 1, a hollow shaft; 11. an internal helical spline; 12. a limiting shoulder; 13. abdicating and slotting; 2. a spline shaft; 21. an external helical spline; 22. a drive gear; 23. a connecting portion; 24. a moving part; 3. a pressure spring; 4. a limiting ring; 5. and a clamp spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figure 1, the one-way clutch comprises a hollow shaft 1, wherein a spline shaft 2 penetrates through the hollow shaft 1.

Specifically, as shown in fig. 1, the spline shaft 2 is provided with a male helical spline 21, the hollow shaft 1 is provided with a female helical spline 11 on the inner side wall thereof, the spline shaft 2 is in splined connection with the hollow shaft 1, one end of the spline shaft 2 is provided with a drive gear 22, the drive gear 22 is integrally formed with the spline shaft 2, and the drive gear 22 is located at the end close to the male helical spline 21.

The working principle is as follows: the spline shaft 2 and the hollow shaft 1 can be directly connected through the spline by integrally forming the driving gear 22 and the spline shaft 2, so that the connecting space between the driving gear 22 and the spline shaft 2 is saved, other connecting pieces are not needed between the driving gear 22 and the spline shaft 2 for connection and limiting, the length of the spline shaft 2 is reduced, the reduction of the volume of the whole isolator is realized under the condition of ensuring that the stroke of the isolator is not changed, the compact assembly of the isolator is improved, the installation of the isolator is facilitated, and the isolator is less in volume and is not easy to interfere with other parts in a vehicle body; and the stability of the connection between the spline shaft 2 and the hollow shaft 1 is increased, and the driving gear 22 is arranged at one end close to the external helical spline 21, so that the driving gear 22 can operate stably when the isolator operates, and the stability of the isolator is improved.

As shown in fig. 1, the inner wall of the hollow shaft 1 is provided with a limiting shoulder 12, the spline shaft 2 is sleeved with a pressure spring 3, the other end of the spline shaft 2 is sleeved with a limiting ring 4, the other end of the spline shaft 2 is provided with a clamp spring 5, the clamp spring 5 is clamped on the limiting ring 4, and the pressure spring 3 is arranged between the limiting shoulder 12 and the limiting ring 4.

As shown in fig. 1, the hollow shaft 1 is provided with a abdicating notch 13, and the limit ring 4 can be embedded into the abdicating notch 13.

As shown in fig. 1, the spline shaft 2 includes a connecting portion 23 and a moving portion 24, the pressure spring 3 is fitted over the moving portion 24, the male helical spline 21 is provided on the connecting portion 23, the drive gear 22 is provided at one end of the connecting portion 23, and the diameter of the connecting portion 23 is larger than that of the moving portion 24.

As shown in fig. 1, the end of the drive gear 22 abuts against the end of the hollow shaft 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.