Height adjusting motor for electric seat of automobile

Abstract

The utility model discloses a height adjusting motor for an electric seat of an automobile. The height adjusting motor for the electric seat of the automobile comprises a flat motor rear cover assembly; a cavity for mounting the gear set is formed in the gear box; the sliding plate comprises two U-shaped guide parts, the two ends of the two U-shaped guide parts are fixedly connected, and the side faces, away from each other, of the two U-shaped guide parts are each fixedly connected with two connecting parts. A plurality of stress surfaces are arranged between the sliding plate and the gear box, so that the gear box can be prevented from being damaged due to overlarge stress on a single surface, the motor can run more stably and smoothly, the noise of the motor can be reduced, the added supporting boss and the head of the screw can jointly bear the received forward and reverse thrust, and the service life of the screw is prolonged. In the repeated forward and reverse rotation process of the motor, the screw can be always kept in a locking state, the reliable operation of the motor is ensured, and the service life of the motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, concretely relates to a height adjustment motor of automobile electric seat. BACKGROUND

[0002] The height adjustment motor of automobile electric seat is the core component in the automobile electric seat, its function is to provide power for the seat, realizes the electric control adjustment of the height of the seat, and its application improves the driving comfort and convenience of the driver.

[0003] When the height of the seat is adjusted, the motor can bear a large load and can run stably and reliably, the commonly used automobile height adjustment motor mainly has a small tooth difference gear motor, a planetary gear motor and a moving screw motor, wherein the small tooth difference gear motor has the advantages of large transmission ratio, large output torque and suitable for bearing a large load, but under the condition that the motor meets the requirements of large output torque and small size, the gear box of the motor has only a single contact stress surface between the sliding plate and the gear box, which leads to easy damage due to excessive stress, and the screws for locking the gear box cover plate are also prone to loosening. CONTENT OF THE UTILITY MODEL

[0004] (1) Technical problem to be solved

[0005] In view of the defects of the prior art, the purpose of the utility model is to provide a height adjustment motor of automobile electric seat, which solves the problem that the sliding plate and the gear box only have a single contact stress surface, which leads to easy damage due to excessive stress, and the screws for locking the gear box cover plate are also prone to loosening.

[0006] (2) Technical scheme

[0007] In order to solve the above technical problems, the utility model provides a height adjustment motor of automobile electric seat, which comprises:

[0008] A flat motor rear cover assembly;

[0009] A gear box, the inside of the gear box is provided with a cavity for installing a gear set;

[0010] A sliding plate, the sliding plate comprises two U-shaped guide parts, the two ends of the two U-shaped guide parts are fixedly connected, the side surfaces of the two U-shaped guide parts away from each other are fixedly connected with two connecting parts, the inside of the gear box is provided with a sliding groove for sliding of the two sides of the connecting parts and the U-shaped guide parts, the contact surfaces of the sliding groove and the side surfaces of the connecting parts and the contact surfaces of the sliding groove and the side surfaces of the U-shaped guide parts are stress support surfaces, under the action of the multiple stress support surfaces, the gear box can be prevented from being damaged due to excessive local stress;

[0011] Gear box cover plate, the gear box is provided with screw holes at four corners, and a boss is fixedly installed at the upper part of each screw hole, and the gear box cover plate is placed on the top of the gear box, and then the screw is screwed on the boss to realize the fixation of the gear box cover plate.

[0012] Preferably, the flat motor rear cover assembly comprises a motor shell, umbrella-shaped magnetic tiles, a rotor, a carbon brush holder, a worm and an end cover, the end cover is fixedly installed inside one end of the motor shell, the umbrella-shaped magnetic tiles are symmetrically fixedly installed on the inner wall of the motor shell, the side face of the two umbrella-shaped magnetic tiles close to each other is fixedly installed with the rotor, and the carbon brush holder is fixedly installed inside the motor shell.

[0013] Further, the gear box is fixedly installed inside the other end of the motor shell, a worm cavity for installing the worm is formed in the inside of the gear box, the output shaft of the rotor penetrates through the through hole of the carbon brush holder and the gear box and is rotatably installed on the inner wall of the gear box through a bearing, and the worm is fixedly sleeved on the output shaft of the rotor.

[0014] Further, the gear set comprises an eccentric worm gear rotatably installed in the cavity of the gear box, a moving gear rotatably installed in the gear box and an output gear, the eccentric worm gear is in meshing connection with the worm, and the protruding end of the eccentric worm gear penetrates through the sliding plate and the moving gear and extends above the sliding plate.

[0015] Further, the first gasket is arranged between the eccentric worm gear and the gear box.

[0016] Further, the shaft sleeve is arranged between the output gear and the gear box cover plate, and the O-shaped ring and the second gasket are further arranged between the output gear and the moving gear.

[0017] (3) beneficial effects

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The utility model discloses a plurality of stress surfaces are arranged between the sliding plate and the gear box, so that the gear box can be prevented from being damaged due to too large stress on a single surface, the motor can run more smoothly and stably, the motor noise can be reduced, the positive and negative thrust received by the supporting boss and the screw head can be jointly borne, the thrust received by the screw is greatly reduced, the screw can always keep locked during the repeated positive and negative rotation of the motor, the reliable operation of the motor is ensured, and the service life of the motor is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three-dimensional schematic view of the utility model.

[0021] Figure 2 is a top view schematic diagram of the utility model.

[0022] Figure 3 is the utility model Figure 2 A-A section schematic diagram in.

[0023] Figure 4 is the utility model Figure 2 B-B section schematic diagram in.

[0024] Figure 5 is the utility model Figure 2 C-C section schematic diagram in.

[0025] Figure 6 is the utility model gear set's explosion schematic diagram.

[0026] Figure 7 is the utility model gear box's three-dimensional schematic diagram.

[0027] The mark in the drawing is: 1, flat type motor rear cover assembly;2, gear box;3, gear set;4, sliding plate;5, gear box cover plate;6, boss;7, screw;101, motor shell;102, umbrella-shaped magnetic shoe;103, rotor;104, carbon brush holder;105, worm;106, end cover;301, eccentric worm wheel;302, moving gear;303, output gear;304, first gasket;305, shaft sleeve;306, O ring;307, second gasket;401, U-shaped guide part;402, connecting part. DETAILED DESCRIPTION

[0028] This specific embodiment is a kind of automobile electric seat height adjustment motor, its structural schematic diagram as shown in Figures 1-7 , the automobile electric seat height adjustment motor includes flat type motor rear cover assembly 1, gear box 2, sliding plate 4 and gear box cover plate 5, the inside of gear box 2 is provided with the cavity of installing gear set 3, sliding plate 4 includes two U-shaped guide parts 401, two U-shaped guide parts 401 both ends are fixedly connected, two U-shaped guide parts 401 far side is fixedly connected with two connecting parts 402, the inside of gear box 2 is provided with the sliding slot for the sliding of multiple connecting parts 402 and the two sides of U-shaped guide part 401, the side surface of sliding slot and connecting part 402 and the side surface of sliding slot and U-shaped guide part 401 contact surface are force support surface, under the action of multiple force support surfaces, gear box 2 can avoid breakage due to local excessive stress;

[0029] The number of the connecting parts 402 is four, the sliding grooves of the gear box 2 are also four, the connecting parts 402 are slidably connected in the sliding grooves, when the connecting parts 402 are in the sliding grooves, the two sides of the connecting parts 402 are in contact with the inner walls of the two sides of the sliding grooves, the total contact force receiving surfaces of the sliding grooves and the connecting parts 402 are eight, meanwhile, the inner part of the gear box 2 is also provided with two sliding grooves matched with the two sides of the U-shaped guiding part 401, the two sides away from each other of the U-shaped guiding part 401 are in contact with the inner walls of the two sliding grooves respectively, the contact force receiving surfaces of the sliding grooves and the U-shaped guiding part 401 are two, therefore, the contact force receiving surfaces of the sliding plate 4 and the gear box 2 are ten, ten force receiving surfaces are matched with the ten sides of the sliding plate 4, when the motor rotates, the gear disperses and transmits the load torque to the ten supporting surfaces of the gear box 2 through the ten sides of the sliding plate 4, thus, the gear box 2 can be prevented from being damaged due to the excessive force on a single surface, meanwhile, the motor can rotate more smoothly, which is beneficial to reduce the noise of the motor.

[0030] The gear box 2 is provided with screw holes at four corners, and a boss 6 is fixedly installed at the upper part of each screw hole, a threaded hole matched with a screw 7 is formed in the inner part of the boss 6, and the gear box cover plate 5 is placed on the top of the gear box 2, then the screw 7 is screwed on the boss 6 to fix the gear box cover plate 5, the four bosses 6 are correspondingly fixedly installed in the four screw holes of the gear box cover plate 5, and the head of the screw 7 and the supporting boss 6 jointly bear the forward and reverse thrust when the motor repeatedly rotates forward and reversely, so that the thrust on the screw 7 is greatly reduced, the screw 7 can always be locked during the repeated forward and reverse rotation of the motor, the reliable operation of the motor is ensured, and the service life of the motor is prolonged.

[0031] The flat motor rear cover assembly 1 comprises a motor shell 101, umbrella-shaped magnetic tiles 102, a rotor 103, a carbon brush holder 104, a worm 105 and an end cover 106, the end cover 106 is fixedly installed in the inner part of one end of the motor shell 101, the umbrella-shaped magnetic tiles 102 are provided with two, the two umbrella-shaped magnetic tiles 102 are symmetrically fixedly installed on the inner wall of the motor shell 101, the side faces close to each other of the two umbrella-shaped magnetic tiles 102 are fixedly installed with the rotor 103, and the carbon brush holder 104 is fixedly installed in the inner part of the motor shell 101.

[0032] The gear box 2 is fixedly installed in the inner part of the other end of the motor shell 101, a worm cavity for installing the worm 105 is formed in the inner part of the gear box 2, the output shaft of the rotor 103 passes through the through hole of the carbon brush holder 104 and the gear box 2 and is rotatably installed on the inner wall of the gear box 2 through a bearing, and the worm 105 is fixedly sleeved on the output shaft of the rotor 103.

[0033] The gear set 3 comprises an eccentric worm wheel 301 rotatably installed in the cavity of the gear box 2, a moving gear 302 movably installed in the gear box 2 and an output gear 303, the eccentric worm wheel 301 is connected with the worm 105 in meshing, the protruding end of the eccentric worm wheel 301 passes through the sliding plate 4 and the moving gear 302 and extends above the sliding plate 4, the first gasket 304 is arranged between the eccentric worm wheel 301 and the gear box 2, the shaft sleeve 305 is arranged between the output gear 303 and the gear box cover plate 5, the O-shaped ring 306 and the second gasket 307 are further arranged between the output gear 303 and the moving gear 302, the shaft sleeve 305 is installed between the output gear 303 and the gear box cover plate 5, the gap at each matching position can be eliminated, the different first gasket 304 and the second gasket 307 are used to compress the O-shaped ring 306 to provide appropriate internal friction and avoid abnormal sound caused by direct impact during mutual movement of the parts, and high transmission efficiency is realized.

[0034] The worm 105 is connected with the eccentric worm wheel 301 in primary gear transmission, the eccentric worm wheel 301 rotates and drives the sliding plate 4 to slide in the gear box 2 and the moving gear 302 to regularly move, the moving gear 302 drives the output gear 303 to rotate in internal meshing differential gear transmission to realize second gear transmission, and the above transmission mode is prior art and will not be described in detail.

[0035] In conclusion, the utility model discloses a plurality of stress surfaces are arranged between the sliding plate 4 and the gear box 2, so that the gear box 2 can be prevented from being damaged due to excessive stress on a single surface, and the motor can run more smoothly and stably, which is beneficial to reducing the noise of the motor, and the positive and negative thrust received by the supporting boss 6 and the head of the screw 7 can be jointly borne, so that the thrust received by the screw 7 is greatly reduced, the screw 7 can always be kept in a locked state during repeated forward and reverse rotation of the motor, the reliable operation of the motor is ensured, and the service life of the motor is prolonged.

[0036] All the technical features in the embodiment can be freely combined according to actual needs.

[0037] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways without departing from the technical scheme concept, and any obvious replacement within the scope of the utility model is within the protection scope of the utility model.

Claims

1. An electric motor for height adjustment of an electric seat of an automobile, characterized by: The automobile electric seat height adjusting motor comprises: A flat motor rear cover assembly; A gear box, an inner part of the gear box is provided with a cavity for installing a gear set; A sliding plate, the sliding plate comprises two U-shaped guide parts, two ends of the two U-shaped guide parts are fixedly connected, two sides of the two U-shaped guide parts away from each other are fixedly connected with two connecting parts, an inner part of the gear box is provided with a sliding groove for realizing sliding of the two sides of the U-shaped guide parts and the connecting parts, a contact surface between the sliding groove and the side of the connecting part and a contact surface between the sliding groove and the side of the U-shaped guide part are stress support surfaces, under the action of the stress support surfaces, damage of the gear box caused by excessive local stress can be avoided; A gear box cover plate, screw holes are formed at four corners of the gear box, a boss is fixedly installed at an upper part of each screw hole, the gear box cover plate is placed on the top of the gear box, and the gear box cover plate is fixed after the screw is screwed on the boss.

2. The height adjustment motor for an automotive power seat according to claim 1, characterized by, The flat motor rear cover assembly comprises a motor shell, umbrella-shaped magnetic tiles, a rotor, a carbon brush holder, a worm and an end cover, the end cover is fixedly installed at one end of the inner part of the motor shell, the umbrella-shaped magnetic tiles are provided with two, the two umbrella-shaped magnetic tiles are symmetrically fixedly installed on the inner wall of the motor shell, the side faces of the two umbrella-shaped magnetic tiles close to each other are fixedly installed with the rotor, and the carbon brush holder is fixedly installed in the inner part of the motor shell.

3. The motor for height adjustment of an electric seat of an automobile according to claim 2, characterized by, The gear box is fixedly installed at the other end of the inner part of the motor shell, a worm cavity for installing the worm is formed in the inner part of the gear box, the output shaft of the rotor passes through the through hole formed in the carbon brush holder and the gear box and is rotatably installed on the inner wall of the gear box through a bearing, and the worm is fixedly sleeved on the output shaft of the rotor.

4. The motor for height adjustment of an electric seat of an automobile according to claim 3, characterized by, The gear set comprises an eccentric worm rotatably installed in the cavity of the gear box, a movable gear rotatably installed in the gear box and an output gear, the eccentric worm is in meshing connection with the worm, and the protruding end of the eccentric worm extends to above the sliding plate through the sliding plate and the movable gear.

5. The motor for height adjustment of an electric seat of an automobile according to claim 4, characterized by, A first gasket is arranged between the eccentric worm and the gear box.

6. The motor for height adjustment of an electric seat of an automobile according to claim 5, characterized by, An axle sleeve is arranged between the output gear and the gear box cover plate, and an O-shaped ring and a second gasket are further arranged between the output gear and the movable gear.

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