CN211623592U

CN211623592U - Cantilever type starter isolator with non-return device

Info

Publication number: CN211623592U
Application number: CN201922491782.4U
Authority: CN
Inventors: 张俊; 厉彬; 赵科
Original assignee: Ningbo Huishan Automobile Fittings Manufacturing Co ltd
Current assignee: Ningbo Huishan Automobile Fittings Manufacturing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-02
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a take non return device's cantilever type starter isolator, include the gear shaft as an organic whole with the gear, install the star wheel on the gear shaft, the cooperation plays the pressure spring of a plurality of rollers and the one-to-one of unidirectional rotation effect in the star wheel centre bore, there is an opening at the axial hole of keeping away from gear one end on gear shaft and the star wheel, one section that the axial hole is close to the gear be with the cylindrical shaft sliding fit's of a drive shaft circular port, one section that the gear was kept away from to the axial hole be with the spline shaft hole of the integral key shaft sliding fit spline housing of drive shaft, the one end that lies in the gear of gear shaft has an exhaust hole that leads to outer terminal surface of gear and circular port cavity, has in the exhaust hole to go out non return device such as check valve or. The isolator prevents mud, greasy dirt, debris and the like outside the hole from entering the vent hole, so that the vent hole is always kept smooth, and the engine is easy to start.

Description

Cantilever type starter isolator with non-return device

Technical Field

The utility model relates to an auto-parts technical field specifically says a cantilever type starter isolator of taking non return device.

Background

The one-way clutch is also called a one-way clutch assembly, or a one-way bearing. The starter also called starter, a cantilever starter isolator with a non-return device in the prior art generally comprises a gear shaft integrated with a gear, a star wheel arranged on the gear shaft, a plurality of rollers matched in a center hole of the star wheel to play a role of unidirectional rotation and first pressure springs in one-to-one correspondence, axial holes with openings at one ends far away from the gear are arranged on the gear shaft and the star wheel, a section of the axial hole close to the gear is a circular hole in sliding fit with a cylindrical shaft of a driving shaft, and a section of the axial hole far away from the gear is a spline shaft hole of a spline sleeve in sliding fit with a spline shaft of the driving shaft. The spline shaft hole is generally an inclined spline shaft hole matched with an inclined spline shaft. When the starter is started, the electromagnetic valve of the cantilever type starter and the power supply of the motor are switched on, the shifting fork of the starter drives the isolator to enable the gear of the isolator to be meshed with the flywheel gear ring, the motor of the starter rotates to drive the engine to rotate, the engine is started after a certain rotating speed is reached, and the shifting fork drives the isolator to be disengaged.

However, the cantilever starter isolator in the prior art still has the following technical problems that although a sliding gap is left between the cylindrical shaft and the axial through hole, and some oil-containing linings are still arranged, the rotating speed for starting is generally about 1 ten thousand of revolutions, the actual working environment is poor, lubricating grease in the oil-containing linings can form sealing to the axial direction after being dissolved at high temperature, namely, a section of cavity of the axial hole close to the gear forms negative pressure, namely, a piston effect is generated, so that the moving resistance of the driving shaft in the axial hole is increased, the working voltage and current of the starter are increased, and the engine is difficult to start or cannot start. Technical personnel set up a section cavity and atmospheric through-hole that link up the axial hole and be close to the gear on the lateral wall of the section of output shaft of axial hole near the gear, alleviated above technical problem, nevertheless because set up at the lateral wall, be 90 with the air current direction, the ventilation effect has certain influence, especially all has the through-hole when using and not using, in the in-service use process, mud greasy dirt piece etc. outside its hole very easily gets into in the through-hole and blocks up the through-hole, directly influences a cantilever type starter isolator normal use and the normal start of generator.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a cantilever type starter isolator of taking non return device that mud greasy dirt piece etc. outside the hole can not get into the through-hole, can keep the through-hole unblocked all the time.

The technical solution of the utility model is, a cantilever type starter isolator of taking non return device is provided, include the gear shaft as an organic whole with the gear, install the star wheel on the gear shaft, the cooperation plays a plurality of rollers of unidirectional rotation effect and the pressure spring of one-to-one in the star wheel central hole, there is an opening in the axial hole of keeping away from gear one end gear and star wheel on gear shaft and the gear, the axial hole be close to the one end of gear for with the cylindrical shaft sliding fit's of a drive shaft circular port, the axial hole is kept away from the one end of gear for the spline shaft hole with the integral key shaft sliding fit spline housing of drive shaft, the one end that is located the gear of gear shaft has an exhaust hole that leads to outer terminal surface of gear and circular port cavity, has in the exhaust hole to go out not into.

After the structure above the adoption, the utility model relates to a cantilever type starter isolator of taking non return device has following advantage: because the position of the vent hole is the extension of the axial hole position, namely the airflow direction is consistent, the exhaust resistance is small, and the exhaust effect is good. Especially, the one-way non-return device which can only be out of the air vent and can not be in the air vent is arranged in the air vent, thereby basically preventing mud, greasy dirt and debris and the like outside the air vent from entering the air vent, keeping the air vent smooth all the time, effectively ensuring the free and flexible movement resistance of the driving shaft in the axial hole, keeping the normal working voltage and the normal working current of the starter, ensuring the easy starting of the engine and eliminating the phenomenon that the engine is difficult to start or cannot be started.

Further, the exhaust hole be the shoulder hole, the outer section is big footpath hole, the inner section is the path hole, first check valve locates the inner in big footpath hole. After the structure above is adopted, an embodiment for installing the non-return device is provided, which is beneficial to axial spacing of the one-way valve, and the diameter of the small-diameter hole is small as much as possible on the premise of meeting the exhaust requirement, so that the structure is more reasonable, the space is reserved at the outer end, and the following air filter screen and the like can be installed.

Furthermore, a circular air filter screen is arranged in the large-diameter hole at the outer end of the first check valve. After the structure above adopting, it is better to avoid mud greasy dirt piece etc. outside the hole to get into the venthole.

Furthermore, a first external thread is arranged on the outer ring of the air filter screen, and a first internal thread screwed with the first external thread on the air filter screen is arranged at the connecting section of the large-diameter hole and the air filter screen; and a second pressure spring for pressing the first one-way valve is arranged between the air filter screen and the first one-way valve. After adopting above structure, can regularly clear up or change airstrainer, make the exhaust effect of air vent better. Especially, the first check valve is pressed tightly by the spring and the air filter screen, and the check valve is convenient to install and replace.

Further, the exhaust hole be the shoulder hole, the outer section is big footpath hole, the inner segment is the path hole, the second check valve is located the outermost end in big footpath hole. After structure more than adopting, an embodiment of installation non return device is provided, existing axial that does benefit to the check valve is spacing, and the diameter that makes the aperture of footpath again is little as possible and makes the structure more reasonable satisfying the prerequisite that the exhaust needs, and the check valve is installed in the outermost end, and the structure is simple relatively, and it is convenient to change the check valve.

Furthermore, the large-diameter hole is provided with a second internal thread, and the second check valve is provided with a second external thread screwed with the second internal thread of the large-diameter hole. After adopting above structure, the second embodiment makes the check valve's installation more convenient under the prerequisite of guaranteeing the check valve function, and is also very easy when needing to change the check valve, just can realize precession or screw-out with the help of instrument rotation check valve rear end.

Further, the exhaust hole be the shoulder hole, the outer section is big footpath hole, the inner segment is the path hole, big footpath hole site is the outermost end, a valve is in the outer end in path hole through a hinge pin and the laminating of a extension spring, extension spring one end is fixed with the valve, the other end and the path hole wall of extension spring are fixed. After the structure above is adopted, another embodiment for installing the check device is provided, the axial limiting of the check valve is facilitated, the diameter of the small-diameter hole is small as much as possible on the premise of meeting the exhaust requirement, the structure is more reasonable, the structure is simpler, and the check technical effect that only the check valve cannot be used is also obtained.

Further, the circular hole is in the same straight line with the axis of the exhaust hole. After the structure more than adopting, the exhaust resistance is littleer, and it is more unobstructed to exhaust.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the cantilever starter isolator with a non-return device according to the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is a schematic cross-sectional view of another embodiment of the cantilever starter isolator with a check device according to the present invention.

Fig. 4 is an enlarged schematic view of C in fig. 3.

Fig. 5 is a schematic cross-sectional view of another embodiment of the cantilever starter isolator with a check device according to the present invention.

Fig. 6 is an enlarged schematic view of D in fig. 5.

Fig. 7 is a left side view of a in fig. 1.

Fig. 8 is a partial sectional structural view of B-B in fig. 1.

Shown in the figure: 1. the gear, 2, the gear shaft, 3, cylindrical hole, 4, the star wheel, 5, the roller, 6, the spline housing, 7, the spline shaft hole, 8, the exhaust hole, 9, the airstrainer, 10, the second pressure spring, 11, the first check valve, 12, the big-diameter hole, 13, the small-diameter hole, 14, the first pressure spring, 15, the second check valve, 16, the extension spring, 17, the valve, 18, the hinge pin.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 1, fig. 2, fig. 7, and fig. 8 show an embodiment of the present invention.

The utility model relates to a take cantilever type starter isolator of non return device, include the gear shaft 2 as an organic whole with gear 1, install star wheel 4 on gear shaft 2, the cooperation plays a plurality of rollers 5 of unidirectional rotation effect and the pressure spring 14 of one-to-one in star wheel 4 centre bore, there is an opening in the axial bore of keeping away from 1 one end of gear on gear shaft 2 and the star wheel 4, the axial bore is close to 1 one end of gear for with the cylindrical shaft sliding fit's of a drive shaft circular port 3, the axial bore is kept away from 1 one end of gear for with the integral key shaft sliding fit's of drive shaft spline shaft hole 7 of spline housing 6. The spline shaft hole is generally an inclined spline shaft hole matched with an inclined spline shaft. The above is the same as the prior art.

The utility model relates to a take cantilever type starter isolator of non return device's invention point lies in:

one end of the gear shaft 2, which is positioned at the gear 1, is provided with an exhaust hole 8 which penetrates through the outer end surface of the gear 1 and the cavity of the circular hole 3, and a non-return device which can only go out but not go in is arranged in the exhaust hole 8. The air is only exhausted and not introduced, and the air is only exhausted and not introduced. The axes of the circular hole 3 and the exhaust hole 8 are on the same straight line.

One embodiment of the non-return device is as follows:

the exhaust hole 8 is a stepped hole, the outer section is a large-diameter hole 12, the inner section is a small-diameter hole 13, and the first check valve 11 is arranged at the inner end of the large-diameter hole 12.

A circular air filter screen 9 is arranged in a large-diameter hole 12 at the outer end of the first check valve 11.

A first external thread is arranged on the outer ring of the air filter screen 9, and a first internal thread screwed with the first external thread on the air filter screen 9 is arranged at the connecting section of the large-diameter hole 12 and the air filter screen 9; a second pressure spring 10 for pressing the first check valve 11 is arranged between the air filter screen 9 and the first check valve 11, and the second pressure spring 10 and the first check valve 11 can be pressed by utilizing an outer ring.

Fig. 3 and 4 show another embodiment of the present invention.

The exhaust hole 8 is a stepped hole, the outer section is a large-diameter hole 12, the inner section is a small-diameter hole 13, and the second check valve 15 is arranged at the outermost end of the large-diameter hole 12. The large-diameter hole 12 is provided with a second internal thread, and the second check valve 15 is provided with a second external thread screwed with the second internal thread of the large-diameter hole 12. The remaining structure and technical effects are the same as those of the first embodiment.

The check valve is commercially available, and for example, the check valve is available on the net in various types and sizes, and can also be called a check valve or a check valve. Typically a spring biased valve plate.

Fig. 5 and 6 show still another embodiment of the present invention.

The exhaust hole 8 is a stepped hole, the outer section is a large-diameter hole 12, the inner section is a small-diameter hole 13, the large-diameter hole 12 is located at the outermost end, a valve 17 is attached to the outer end of the small-diameter hole 13 through a hinge pin 18 and a tension spring 16, one end of the tension spring 16 is fixed with the valve 17 as welding or hanging, and the other end of the tension spring 16 is fixed with the wall of the small-diameter hole as welding or hanging.

It is easy to understand that the spring of the utility model, including the spring in the check valve and the elasticity of the tension spring, need not be very big, as long as make valve block or valve paste the hole terminal surface.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a take cantilever type starter isolator of non return device, include gear shaft (2) as an organic whole with gear (1), install star wheel (4) on gear shaft (2), the cooperation has an opening in star wheel (4) centre bore a plurality of roller (5) and the first pressure spring (14) of one-to-one that play unidirectional rotation effect, there is an axial hole of keeping away from gear (1) one end gear (2) and star wheel (4) on, the axial hole is close to one end of gear (1) for circular port (3) with the cylindrical axle sliding fit of a drive shaft, the axial hole is kept away from one end of gear (1) and is spline shaft hole (7) with the integral key shaft sliding fit's spline housing (6) of drive shaft, its characterized in that: one end of the gear shaft (2) positioned at the gear (1) is provided with an exhaust hole (8) which penetrates through the outer end face of the gear (1) and the cavity of the circular hole (3), and a non-return device which can only go out but cannot go in is arranged in the exhaust hole (8).

2. The cantilevered starter isolator with no-back device of claim 1 wherein: the exhaust hole (8) is a stepped hole, the outer section is a large-diameter hole (12), the inner section is a small-diameter hole (13), and the first check valve (11) is arranged at the inner end of the large-diameter hole (12).

3. The cantilevered starter isolator with no-back device of claim 2 wherein: a circular air filter screen (9) is arranged in a large-diameter hole (12) at the outer end of the first check valve (11).

4. The cantilevered starter isolator with no-back device of claim 3 wherein: a first external thread is arranged on the outer ring of the air filter screen (9), and a first internal thread screwed with the first external thread on the air filter screen (9) is arranged at the connecting section of the large-diameter hole (12) and the air filter screen (9); a second pressure spring (10) which compresses the first one-way valve (11) is arranged between the air filter screen (9) and the first one-way valve (11).

5. The cantilevered starter isolator with no-back device of claim 1 wherein: exhaust hole (8) be the shoulder hole, the outer section is big footpath hole (12), the inner segment is minor diameter hole (13), second check valve (15) locate the outermost end in big footpath hole (12).

6. The cantilevered starter isolator with no-back device of claim 5 wherein: the large-diameter hole (12) is provided with a second internal thread, and the second check valve (15) is provided with a second external thread screwed with the second internal thread of the large-diameter hole (12).

7. The cantilevered starter isolator with no-back device of claim 1 wherein: exhaust hole (8) be the shoulder hole, the outer section is big footpath hole (12), the inner segment is path hole (13), big footpath hole (12) are located the outermost end, a valve (17) is laminated in the outer end of path hole (13) through a hinge pin (18) and an extension spring (16), extension spring (16) one end is fixed with valve (17), the other end and the path pore wall of extension spring (16) are fixed.

8. The cantilever starter isolator with the check device according to any one of claims 1 to 7, wherein: the axes of the circular hole (3) and the exhaust hole (8) are on the same straight line.