CN218031283U - Gear speed reducer for automobile pedal - Google Patents

Abstract

The utility model relates to a gear reduction unit for automobile pedal belongs to mechanical transmission technical field, including DC motor, DC motor fixedly connected with base, base fixedly connected with upper cover is provided with worm gear speed reduction structure in the base, and the base rotates and is connected with the second pivot, is provided with planet wheel speed reduction structure and output shaft in the upper cover, is provided with the bearing end cover on the output shaft, and the louvre has been seted up at the base top, and the base bottom is seted up flutedly, is provided with first strengthening rib in the recess. In the utility model, the two-stage speed reducing structure is arranged to reduce the rotating speed and increase the torque, and simultaneously, the transmission direction is changed, so that the whole structure of the device is more compact; the bevel wheel is arranged to replace a worm wheel in a worm and gear structure, so that the processing cost is saved and the processing difficulty is reduced; the weight is reduced by arranging the grooves in the base, and the reinforcing ribs are arranged at a plurality of positions, so that the strength of the device is ensured while the weight is reduced; the bearing end cover is arranged to share the higher axial pressure on the output end.

Description

Gear speed reducer for automobile pedal

Technical Field

The utility model belongs to the technical field of mechanical transmission, a gear reduction unit for automobile pedal is related to.

Background

The brake pedal can limit power for decelerating the vehicle. The pedal transmits power by controlling the prime motor, connecting the prime motor with the reduction gearbox and then connecting with the working machine. The reduction gearbox can be classified into a planetary gear reduction gearbox, a worm and gear reduction gearbox, a gear reduction gearbox and the like, and mainly functions to enable the prime mover to provide power with low rotating speed and large torque for the output end. The planetary gear reduction box is also called a gear box, the structure of the planetary gear reduction box is a mechanism with a plurality of planetary gears rotating around a sun gear, and the planetary gear reduction box has the advantages of high transmission efficiency, low noise and stable operation.

The single-stage planetary gear transmission ratio is smaller, the requirements of automobile use cannot be met generally, the multi-stage planetary gear reduction is complex in structure, the length of the device is increased, the device is limited to be used in a narrow space, and the force transmission direction cannot be changed; the pressure born by the output end is larger when the planetary gear speed reducing structure is used for transmission; the worm gear speed reducing structure can change the transmission direction but has lower transmission efficiency. Meanwhile, the worm gear and the planetary gear can vibrate during working, so that the service life of the device is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gear speed reducer for an automobile pedal, which has the functions of reducing the rotating speed, increasing the torque and simultaneously changing the transmission direction; the two speed reducing structures are used for two-stage speed reduction, so that the structure of the device is more compact, the mountable positions of the device can be more diversified, and the applicability is improved; the base is provided with the grooves, and the reinforcing ribs are arranged at multiple positions, so that the weight of the device is reduced, the strength of the device is guaranteed, vibration is reduced, and the service life is prolonged.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a gear reduction unit for automotive pedal, includes DC motor, base, DC motor's bottom and the top fixed connection of base, is provided with the worm gear reduction structure that is used for first order speed reduction and changes the direction of transmission in the base, and worm gear reduction structure includes worm and helical gear, the worm setting inside the base and with DC motor's output fixed connection, the worm meshing is connected helical gear, helical gear and worm meshing realize first order speed reduction, and the fixed cover in the helical gear has the one end of second pivot and the other end of second pivot rotates with one side inner wall of base to be connected, and the helical gear is coaxial to be provided with the pinion, and the fixed cover of pinion is served at one of second pivot, and one side fixedly connected with of pinion is used for the planet wheel reduction structure of second level speed reduction.

As a preferred technical scheme of the utility model, circular opening and opening border position have been seted up in the left side of base and have been seted up a plurality of pinholes, all are provided with the pin in every pinhole, and one side that the base is close to the pinhole is provided with the ring gear, and the ring gear passes through a plurality of pin fixed connection with the base, and one side position that is close to the ring gear and keeps away from the pinion is provided with the upper cover.

As the utility model discloses a preferred technical scheme, the upper cover passes through screw fixed connection with the base, is provided with in the upper cover be used for the planet wheel speed reduction structure of second level speed reduction, planet wheel speed reduction structure includes the output board, is provided with the third bearing on the output board and rotates through it and upper cover to be connected, and one side fixedly connected with output shaft of base is kept away from to the output board.

As a preferred technical scheme of the utility model, one side center department that the output plate is close to the pinion rotates and is connected with the second pivot and keeps away from a plurality of third pivots of edge fixedly connected with at center, and the planetary gear has all been cup jointed to all fixing in every third pivot, and every planetary gear all inner gearing in the ring gear, the central point of output plate puts in the second pivot fixed cover and has been cup jointed the centre wheel, one side and the pinion fixed connection of centre wheel, centre wheel and every planetary gear intermeshing.

As an optimal technical scheme of the utility model, all be provided with between every planetary gear and the output board and between centre wheel and the output board and be arranged in reducing the second graphite gasket of in-service contact wear.

As an optimized technical scheme of the utility model, the quantity of third pivot and centre wheel is four.

As a preferred technical scheme of the utility model, the waterproof bearing seal of fixedly connected with on the third bearing, the one end of output shaft is rotated and is connected with the bearing cap that is used for sharing the axial force, bearing cap install on the third bearing and with upper cover fixed connection, go back fixedly connected with between upper cover and the bearing cap and be used for increasing structural strength and reduce the third strengthening rib of vibrations.

As a preferred technical scheme of the utility model, still fixedly connected with is used for increasing structural strength and the third strengthening rib that reduces vibrations between upper cover and the bearing end cover.

As a preferred technical scheme of the utility model, the louvre that is arranged in the heat that discharge work direct current motor produced and regard as direct current motor's power outlet is offered at the top of base.

As a preferred technical scheme of the utility model, the recess that is used for lightening device weight is offered to the inside bottom of base, and fixedly connected with is used for increasing structural strength and reduces the first strengthening rib of vibrations in the recess, and the top fixedly connected with of base is used for reinforcing structural strength and reduces the second strengthening rib of vibrations.

The utility model has the advantages that:

(1) Through setting up worm gear structure and planet wheel structure secondary speed reduction, change the direction of transmission when reducing rotational speed and increase moment of torsion to make device overall structure compacter, can be applied to more narrow and small spaces, improved the suitability of device.

(2) The bevel gear in the dual gear is arranged to replace a worm gear in a worm gear structure, the size of the worm gear required by the small size of the device is small, the small worm gear is difficult to produce and high in cost, and the bevel gear is used for replacing the worm gear, so that the processing cost can be saved and the processing difficulty can be reduced while the worm gear is driven.

(3) Through setting up first sealing washer, second sealing washer and waterproof bearing seal and improved the leakproofness in base and the protecgulum, prevent that pollutants such as outside dust, moisture, metal powder from preventing revealing of lubricating oil simultaneously, improved the life of device.

(4) The weight of the device is reduced by arranging the grooves in the base, and meanwhile, the device is provided with the reinforcing ribs at multiple positions, so that the strength of the device is ensured while the weight of the device is reduced, the vibration is reduced, the service life is prolonged, and the strength of multiple holes in the device is improved; the bearing end cover is arranged to share the higher axial pressure on the output end.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the external structure of the present invention;

fig. 2 is a schematic view of the external structure of the electric motor detached from the electric motor shown in fig. 1;

fig. 3 is a schematic view of the base structure of the present invention;

fig. 4 is a cross-sectional view of the left side view of the present invention;

fig. 5 is a schematic structural diagram of the meshing of the inner gear ring and the planet gear of the present invention;

fig. 6 is a schematic view of the connection structure of the planet wheel and the output disc of the present invention;

fig. 7 is a schematic view of the connection structure between the output disc and the third rotating shaft of the present invention.

In the figure: 1. a direct current motor; 101. a worm; 2. a base; 201. a first screw; 102. a shaft sleeve; 202. a support plate; 203. a first rotating shaft; 204. heat dissipation holes; 205. a groove; 206. a first seal ring; 3. a second rotating shaft; 301. a second bearing; 302. a first graphite gasket; 4. a duplicate gear; 401. a helical gear; 402. a pinion gear; 5. an inner gear ring; 501. a pin hole; 502. a pin; 6. a planetary gear; 601. a third rotating shaft; 602. a center wheel; 603. a second graphite gasket; 7. an output plate; 701. a second seal ring; 8. an upper cover; 801. a second screw; 9. an output shaft; 10. a third bearing; 11. waterproof shaft seal; 12. a bearing end cap; 13. a first mounting hole; 14. a second mounting hole; 15. a first reinforcing rib; 16. a second reinforcing rib; 17. and a third reinforcing rib.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-7, a gear reduction device for an automobile pedal comprises a direct current motor 1, a base 2 is arranged at the bottom of the direct current motor 1, a plurality of threaded holes corresponding to each other in position are formed in the bottom of the direct current motor 1 and the top of the base 2, a first screw 201 is arranged in each threaded hole, and the direct current motor 1 and the base 2 are detachably connected through the plurality of first screws 201, so that parts in the base 2 can be conveniently overhauled and replaced.

The position department that direct current motor 1 and base 2 contacted is provided with first sealing washer 206, the one end of direct current motor 1's output fixedly connected with worm 101, the other end of worm 101 rotates with the bottom of base 2 to be connected, the one end that worm 101 is close to the bottom of base 2 rotates and is connected with axle sleeve 102, axle sleeve 102 can guarantee direct current motor 1 and worm 101 the concentricity and reduce the stress swing in the work, the top fixedly connected with backup pad 202 of base 2, the center department of backup pad 202 has seted up and has rotated in circular hole and the circular hole and be connected with first pivot 203, the inside fixed one end that has cup jointed worm 101 of first pivot 203, it is more stable and reduce vibrations to enable the rotation of worm 101 through setting up first pivot 203. One side of keeping away from first pivot 203 on the backup pad 202 is close to the edge and has seted up louvre 204, and louvre 204 is arranged in discharging the heat that produces in the during operation direct current motor 1 and is regarded as direct current motor 1's power outlet simultaneously, and the top fixedly connected with of base 2 is used for strengthening structural strength and reduces the strengthening rib second strengthening rib 16 of vibrations.

The groove 205 has been seted up on the right side inner wall of base 2, there is second bearing 301 in the groove 205 rotation connection, the fixed cover has been cup jointed the one end of second pivot 3 in the second bearing 301, the fixed cover in the position that the one end of second pivot 3 is close to first graphite gasket 302 has been met duplicate gear 4, duplicate gear 4 includes pinion 402, pinion 402 cup joints on second pivot 3 with second bearing 301 is coaxial, one side fixedly connected with first graphite gasket 302 that second bearing 301 is close to pinion 402, first graphite gasket 302 can prevent that the during operation should shake and lead to first graphite gasket 302 and pinion 402 direct mutual contact and produce wearing and tearing, the coaxial fixedly connected with helical gear 401 of pinion 402, helical gear 401 and worm 101 meshing, dc motor 1's output carries out the first order through helical gear 401 and worm 101 and slows down and has changed the direction of transmission of power.

Circular opening and opening edge position have been seted up on the left side of base 2 and have been seted up a plurality of pinholes 501, all are provided with pin 502 in every pinhole 501, and the left side of base 2 is provided with ring gear 5, and ring gear 5 has reduced the vibrations of ring gear 5 in the work through a plurality of pins 502 and base 2 fixed connection. One side that base 2 kept away from recess 205 has seted up a plurality of screw holes, all is provided with second screw 801 in every screw hole, and base 2's left side is provided with upper cover 8, and upper cover 8 can be dismantled through a plurality of second screw 801 threads with base 2 and be connected, and convenient to detach upper cover 8 overhauls and changes the device internals. The position that upper cover 8 and base 2 meet is provided with second sealing washer 701, it is connected with third bearing 10 to rotate on the one side that upper cover 8 keeps away from pinion 402, upper cover 8 rotates through third bearing 10 and is connected with output board 7, one side fixedly connected with = the one end that has output shaft 9 of output board 7 keeping away from pinion 402, the one end that output shaft 9 is close to output board 7 has cup jointed third bearing 10, output shaft 9 rotates through third bearing 10 and upper cover 8 and is connected, fixedly connected with waterproof bearing seal 11 on the third bearing 10, the one end of output shaft 9 rotates and is connected with useful bearing end cover 12, bearing end cover 12 installs on third bearing 10 and with upper cover 8 fixed connection, bearing end cover 12 is used for sharing the higher pressure that output shaft 9 bore, bearing end cover 12 and the left side fixed connection of upper cover 8, still fixedly connected with between upper cover 8 and the bearing end cover 12 is used for increasing structural strength and reducing third strengthening 17 of vibrations.

One side of the output plate 7 close to the pinion 402 is fixedly connected with four third rotating shafts 601 far away from the center of a circle, each third rotating shaft 601 is fixedly sleeved with a planetary gear 6, the center of the output plate 7 is rotatably connected with the other end of the second rotating shaft 3, one end of the second rotating shaft 3 close to the output plate 7 is fixedly sleeved with a center wheel 602, the center wheel 602 and the four planetary gears 6 are close to one side of the output plate 7 but are not in contact with the output plate 7, and a second graphite gasket 603 is arranged between one side of the center wheel 602 and one side of the output plate 7. Each planetary gear 6 is engaged with the ring gear 5 and with the sun gear 602, and one side of the sun gear 602 is fixedly connected with the pinion 402. The second reduction is accomplished by the planet gears 6 and the sun gear 602.

A plurality of first mounting holes 13 for the installation device are formed in the bottom of the base 2, a second mounting hole 14 for the installation device is formed in the upper cover 8, a groove 205 for reducing the weight of the device is formed in the inner bottom of the direct current motor 1, and a first reinforcing rib 15 for increasing structural strength and reducing vibration is fixedly connected to the groove 205.

When the gear speed reducer for the automobile pedal is used: the direct current motor 1 is started through the pedal, the output end of the direct current motor 1 drives the worm 101 fixedly connected with the direct current motor 1 to rotate, the other end of the worm 101 is rotatably connected with the bottom of the base 2, and the shaft sleeve 102 rotatably connected with one end, close to the bottom of the base 2, of the worm 101 can guarantee concentricity of the direct current motor 1 and the worm 101 and reduce stress swing in work. The worm 101 is meshed with the bevel gear 401, the worm 101 and the bevel gear 401 are equivalent to a worm gear and worm transmission structure, and the device has smaller required worm gear and larger industrial production difficulty, so that the effect and the cost reduction effect can be achieved by using the bevel gear 401 to replace the worm gear. The rotation of the worm 101 drives the helical gear 401 to rotate, and the transmission direction is changed while the first-stage speed reduction is completed.

The helical gear 401 belongs to the dual gear 4, the dual gear 4 further comprises a pinion 402, the helical gear 401 rotates to drive the pinion 402 which is coaxially and fixedly connected with the helical gear to rotate, the pinion 402 rotates to drive the central wheel 602 which is fixedly connected with the pinion 402 to rotate, and the pinion 402 also rotates to drive the second rotating shaft 3 which is fixedly sleeved with the pinion 402 to rotate. Because the pinion 402 and the center wheel 602 are both sleeved on the second rotating shaft 3, one end of the second rotating shaft 3 is rotatably connected with the base 2 and the other end is rotatably connected with the output plate 7, the vibration generated when the pinion 402 and the center wheel 602 rotate is reduced, and the service life of the device is prolonged.

The central wheel 602 is meshed with each planetary gear 6, and each planetary gear 6 is meshed with the inner gear ring 5, so that each planetary gear 6 makes circular motion around the central wheel 602, each planetary gear 6 drives a third rotating shaft 601 fixedly sleeved with the planetary gear 6 to make circular motion around the central wheel 602, each central wheel 602 drives the third rotating shaft 601 fixedly connected with the central wheel to rotate, the third rotating shaft 601 rotates to drive an output plate 7 fixedly connected with the third rotating shaft to rotate, the output plate 7 rotates to drive an output shaft 9 fixedly connected with the output plate to rotate, second-stage speed reduction is completed, and the torque is increased by reducing the rotating speed while the driving direction of the motor is changed through a two-stage speed reduction structure, so that the output torque reaches a required value.

Because lubricating oil is needed to be used at each meshing position in the base 2 during operation, a first sealing ring 206 and a second sealing ring 701 are respectively arranged at the connecting position of the direct current motor 1 and the base 2 and the connecting position of the base 2 and the inner gear ring 5, and a waterproof shaft seal 11 is arranged on the third bearing 10 and used for ensuring the sealing performance of the base 2 to prevent the invasion of external pollutants such as dust, moisture, metal powder and the like from influencing the service life of the device and preventing the lubricating oil from flowing out. The bearing end cap 12 is used to share the higher pressure assumed by the output shaft 9. The top of the base 2 is provided with a heat dissipation hole 204, and the heat dissipation hole 204 is used for discharging heat generated by the dc motor 1 during operation, reducing influence of heat transmitted into the base 2 on the service life of the device, and is used as a power outlet of the dc motor 1. The bottom of base 2 is seted up the recess 205 of lightening device weight to set up first strengthening rib 15 in recess 205, the top of base 2 has set up second strengthening rib 16, has set up third strengthening rib 17 on one side of upper cover 8, the setting of strengthening rib has ensured the intensity in device and hole when save material and lightening device weight, thereby has reduced vibrations and has promoted the life-span of device.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a gear reduction unit for auto pedal, includes direct current motor (1), base (2), its characterized in that, the bottom of direct current motor (1) and the top fixed connection of base (2), be provided with in base (2) and be used for the first order to slow down and change the worm gear speed reduction structure of direction of transmission, worm gear speed reduction structure includes worm (101) and helical gear (401), worm (101) set up in base (2) inside and with the output fixed connection of direct current motor (1), worm (101) meshing connection helical gear (401), helical gear (401) and worm (101) meshing realize first order speed reduction, helical gear (401) internal fixation cover has the one end of second pivot (3) and the other end of second pivot (3) to rotate with the one side inner wall of base (2) to be connected, helical gear (401) coaxial be provided with pinion (402), pinion (402) fixed cup joint is served in one end of second pivot (3), one side fixedly connected with the structure that is used for the second level planet wheel to slow down.

2. The gear reduction device for the automobile pedal according to claim 1, characterized in that a circular opening is formed in the left side of the base (2), a plurality of pin holes (501) are formed in the edge of the opening, a pin (502) is arranged in each pin hole (501), an inner gear ring (5) is arranged on one side of the base (2) close to the pin holes (501), the inner gear ring (5) is fixedly connected with the base (2) through the plurality of pins (502), and an upper cover (8) is arranged on one side of the inner gear ring (5) close to the pinion (402).

3. The gear reduction device for the automobile pedal according to claim 2, wherein the upper cover (8) is detachably connected with the base (2) through a screw, the planetary gear reduction structure for the second-stage reduction is arranged in the upper cover (8), the planetary gear reduction structure comprises an output plate (7), a third bearing (10) is arranged on the output plate (7) and is rotatably connected with the upper cover (8) through the third bearing, and an output shaft (9) is fixedly connected to one side, far away from the base (2), of the output plate (7).

4. The gear reduction device for the automobile pedal according to claim 3, characterized in that a second rotating shaft (3) is rotatably connected to the center of one side of the output plate (7) close to the pinion (402) and a plurality of third rotating shafts (601) are fixedly connected to the edges far away from the center, and a planetary gear (6) is fixedly sleeved on each third rotating shaft (601).

5. A gear reduction unit for vehicle pedals according to claim 4, characterized in that a second graphite pad (603) for reducing contact wear during operation is provided between each planet gear (6) and the output plate (7) and between the sun gear (602) and the output plate (7).

6. The gear reduction unit for an automobile pedal according to claim 4, wherein the number of the third rotating shaft (601) and the center wheel (602) is four.

7. The gear reduction unit for the automobile pedal according to claim 4, characterized in that a waterproof shaft seal (11) is fixedly connected to the third bearing (10), one end of the output shaft (9) is rotatably connected to a bearing end cover (12) for sharing axial force, and the bearing end cover (12) is mounted on the third bearing (10) and is fixedly connected to the upper cover (8).

8. The gear reduction unit for the pedal of the automobile as claimed in claim 7, wherein a third reinforcing rib (17) for increasing structural strength and reducing vibration is further fixedly connected between the upper cover (8) and the bearing end cover (12).

9. The gear reduction unit for the pedal of an automobile according to claim 1, wherein the top of the base (2) is provided with a heat dissipation hole (204) for discharging heat generated by the dc motor (1) during operation and serving as a power outlet of the dc motor (1).

10. The gear reduction unit according to claim 1, wherein a recess (205) for reducing the weight of the gear reduction unit is formed in the bottom of the base (2), a first reinforcing rib (15) for increasing the structural strength and reducing the vibration is fixedly connected to the recess (205), and a second reinforcing rib (16) for increasing the structural strength and reducing the vibration is fixedly connected to the top of the base (2).

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