A low-noise vehicle-mounted electric air pump

Abstract

The application relates to the technical field of vehicle-mounted air pumps, in particular to a low-noise vehicle-mounted electric air pump which comprises a box body, first partition plates are symmetrically arranged on the front side and the left side of the top of the box body, a horizontal plate is arranged on the middle side of the top of the box body, a second partition plate is arranged on the middle part of the rear side of the top of the box body, a top plate is arranged on the top of the box body, first mounting seats are symmetrically arranged on the top and the bottom between the two first partition plates, and a cylinder body is arranged between the two first mounting seats. The design of the noise reduction assembly and the limiting assembly of the device can significantly reduce the noise generated by the high-speed rotation of the motor and the eccentric gear and the movement of the cylinder connecting rod and the cylinder cover. The elastic sheet and the arc-shaped seat in the noise reduction assembly and the elastic piece and the arc-shaped plate in the limiting assembly jointly act on the motor vibration, effectively absorbing the vibration and reducing the transmission of the vibration to the box body and the external environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted air pump, and particularly relates to a low-noise vehicle-mounted electric air pump. BACKGROUND

[0002] The electric air pump, as a convenient air pressure filling device, operates in dependence on the efficient operation of the internal motor. The working principle of the device is briefly described as follows: after the motor is started, in the air extraction stage, the valve of the communicating vessel is automatically opened under the action of atmospheric pressure, allowing external gas to flow into the air cylinder; when inflating, with the rise of the internal air pressure of the air cylinder, the valve of the communicating vessel is closed under pressure, so as to push the gas into the tire.

[0003] In the current design of the electric air pump, the motor and the support are integrated as a whole, in which the motor and the gear set are ingeniously arranged in the special space inside the support to ensure the smoothness of power transmission. In order to improve the flexibility of the rotating parts, the eccentric gear is specially arranged outside the support. Generally speaking, in this layout, the motor and the eccentric gear are located below the support, and the air cylinder is arranged above the support. Such a design not only facilitates the conversion of the motion direction, but also greatly optimizes the overall structure of the air pump, making it more compact.

[0004] However, it is worth noting that a significant defect of the existing air pump lies in the exposure of the moving parts. The motor and the eccentric gear generate significant noise when rotating at high speed, and the connecting rod and the cylinder cover of the air cylinder also produce noticeable sound when moving. These noise sources jointly constitute noise pollution to the surrounding environment, affecting the user experience and the tranquility of the surrounding environment. Therefore, the optimization design for noise control of the air pump is particularly urgent. Therefore, a low-noise vehicle-mounted electric air pump is needed. SUMMARY

[0005] In order to overcome the defect that the motor and the eccentric gear of the vehicle-mounted electric air pump generate significant noise when rotating at high speed, and the connecting rod and the cylinder cover of the air cylinder also produce noticeable sound when moving. These noise sources jointly constitute noise pollution to the surrounding environment, the technical problem: to provide a low-noise vehicle-mounted electric air pump.

[0006] The technical scheme of the present application is: a low-noise vehicle-mounted electric air pump, comprising a box body, a first partition plate, a horizontal plate, a second partition plate, a top plate, a first mounting seat, a cylinder body, a noise reduction assembly, a motor, a limiting assembly, a pinion, a gear, a piston, a connecting rod, an air outlet, an air inlet, an air pipe, a sliding plate, a storage battery and an isolation assembly, the first partition plate is arranged on the top front side of the box body, the horizontal plate is arranged on the top middle side of the box body, the second partition plate is arranged on the top rear middle side of the box body, the top plate is arranged on the top of the box body, the first mounting seat is symmetrically arranged between the two first partition plates, the cylinder body is arranged between the two first mounting seats, the noise reduction assembly capable of reducing the noise of the motor is arranged between the box body and the second partition plate, the limiting assembly capable of further fixing the motor is arranged on the bottom of the top plate, the gear is rotatably arranged on the left side wall of the second partition plate, the pinion is arranged on the output shaft of the motor, the pinion is engaged with the gear, the isolation assembly capable of reducing the noise of the gear and the pinion is arranged on the left side wall of the second partition plate, the piston is slidably arranged in the cylinder body, the connecting rod is rotatably arranged on the piston, one end of the connecting rod is rotatably connected with the gear, the air outlet is embeddedly arranged on the front center of the cylinder body, the air inlet is embeddedly arranged on the front side of the cylinder body, the air pipe is arranged on the air outlet, the air head is arranged on the air pipe, the sliding plate is slidably arranged on the front side of the box body, the sliding plate is provided with a slot, the slot of the sliding plate is used for clamping the air pipe, the storage battery is arranged on the rear side of the top of the box body, and the storage battery is connected with the motor through a wire.

[0007] Preferably, the noise reduction assembly comprises a second mounting seat, an elastic sheet and an arc-shaped seat, the second mounting seat is arranged between the box body and the second partition plate, the elastic sheet is arranged on the top of the second mounting seat, and the arc-shaped seat is arranged on the top of the elastic sheet.

[0008] Preferably, the limiting assembly comprises a fixing seat, an elastic piece and an arc-shaped plate, the fixing seat is arranged on the bottom of the top plate, the elastic piece is symmetrically arranged on the fixing seat, the arc-shaped plate is arranged on the bottom of the elastic piece, and the arc-shaped plate is matched with the upper part of the motor.

[0009] Preferably, the isolation assembly comprises a mounting box, a liquid injection pipe, a sealing plate and an isolation plate, the mounting box is arranged on the left side wall of the second partition plate, the mounting box is provided with a mounting groove for loading the gear and the pinion, the liquid injection pipe is embeddedly arranged on the top of the mounting box, the sealing plate is arranged on the left side of the mounting box, and the isolation plate is arranged on the left side of the sealing plate.

[0010] Preferably, the placing assembly further comprises a first sliding block, a sliding plate, a fixing column, a limiting plate and a pull rod, the sliding groove is arranged on the top front right side of the box body, the first sliding block is slidably arranged in the sliding groove of the box body, the sliding plate is arranged on the top of the first sliding block, the fixing column is arranged on the top rear side of the sliding plate, the limiting plate is symmetrically arranged on the fixing column, the slot for clamping the air pipe is arranged on the limiting plate, and the pull rod is arranged on the sliding plate.

[0011] As preferred, the mounting box and the supporting assembly are further included, the bottom of the box body is provided with the mounting box, the mounting box is provided with the supporting assembly for assisting, the supporting assembly includes the second sliding block, the connecting plate, the support frame, the cylindrical gear and the rack, the sliding grooves are symmetrically opened on the bottom of the mounting box, the second sliding blocks are slidably arranged on the sliding grooves of the bottom of the mounting box, the connecting plates are arranged on the second sliding blocks, the sliding grooves are opened on the top of the mounting box, the first sliding blocks are fixedly connected with the adjacent connecting plates, the support frames are arranged at the left and right ends of the connecting plates, the cylindrical gears are rotatably arranged on the middle side of the bottom of the box body, the racks are arranged on the ends of the support frames close to the adjacent cylindrical gears, and the front and rear racks are in up-down staggered arrangement with the adjacent cylindrical gears.

[0012] As preferred, the ventilation opening is arranged on the rear side of the box body close to the motor.

[0013] As preferred, the sound-absorbing layer with the bubble layer is arranged between the box body and the first partition plate.

[0014] The application has the following advantages:

[0015] 1. The design of the noise reduction assembly and the limiting assembly of the device significantly reduces the noise generated by the motor and the eccentric gear in high-speed rotation, as well as the noise generated by the cylinder connecting rod and the cylinder cover. The elastic sheet and the arc-shaped seat (with built-in sound-absorbing cotton) in the noise reduction assembly and the elastic member and the arc-shaped plate (with the sound-absorbing layer with the bubble layer on the inner side) in the limiting assembly work together to effectively absorb the motor vibration and reduce the transmission of the vibration to the box body and the external environment. This design not only weakens the vibration amount on the path of the transmission of the motor vibration to the box body, but also weakens the resonance phenomenon of the motor and the box body, thereby achieving a significant noise reduction effect. In addition, the soundproof felt arranged in the first mounting seat further improves the sound-absorbing effect of the cylinder body, thereby significantly reducing the overall noise level.

[0016] 2. In addition to the noise reduction design, the application also has other practical functions. For example, through the arrangement of the placing assembly, the user can conveniently take the air pipe and connect it with the inflation port of the tire through the inflation head, thereby improving the convenience of inflation. At the same time, the design of the supporting assembly enables the device to be stably placed on the ground during inflation, which effectively reduces the transmission of noise even if the contact area is small. In addition, the mounting box, the sealing plate and the isolation plate not only protect the large gear and the small gear and reduce the transmission of noise, but also allow the user to add lubricating liquid through the liquid injection pipe to prevent noise caused by the hard fit of the large gear and the small gear. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the application.

[0018] Figure 2 It is a schematic diagram of the first partial three-dimensional structure of the application.

[0019] Figure 3 It is a second partial perspective view of the present application.

[0020] Figure 4 It is a third partial perspective view of the present application.

[0021] Figure 5 It is a partial exploded view of the present application.

[0022] Figure 6 It is an exploded view of the isolation assembly of the present application.

[0023] Figure 7 It is an installation view of the placement assembly of the present application.

[0024] Figure 8 It is a perspective view of the support assembly of the present application.

[0025] Legend: 1_box, 2_first partition, 3_horizontal plate, 4_second partition, 5_top plate, 6_first mounting seat, 7_cylinder, 8_noise reduction assembly, 81_second mounting seat, 82_elastic sheet, 83_arc-shaped seat, 9_motor, 10_limiting assembly, 101_fixing seat, 102_elastic member, 103_arc-shaped plate, 11_pinion, 12_gear, 13_piston, 14_linkage, 15_air outlet, 16_air inlet, 17_air pipe, 18_slip plate, 19_battery, 20_isolation assembly, 201_installation box, 202_installation groove, 203_liquid injection pipe, 204_sealing plate, 205_isolation plate, 21_placement assembly, 211_slip groove, 212_first sliding block, 213_slip plate, 214_fixing column, 215_limiting plate, 216_tie rod, 22_installation box, 23_support assembly, 231_second sliding block, 232_connection plate, 233_support frame, 234_cylindrical gear, 235_rack. DETAILED DESCRIPTION

[0026] The present application is further described below in conjunction with the drawings and specific embodiments.

[0027] Embodiment: A low-noise vehicle-mounted electric air pump, such as Figures 1-6As shown, including the box 1, the first partition 2, the cross plate 3, the second partition 4, the top plate 5, the first mounting seat 6, the cylinder 7, the noise reduction assembly 8, the motor 9, the limiting assembly 10, the pinion 11, the gear 12, the piston 13, the connecting rod 14, the air outlet 15, the air inlet 16, the air pipe 17, the sliding plate 18, the battery 19 and the isolation assembly 20, the box 1 top front side left and right are provided with the first partition 2 by screw connection, the box 1 top middle side is provided with the cross plate 3 by screw connection, the box 1 top rear side middle part is provided with the second partition 4, the box 1 top is provided with the top plate 5 by bolt connection, the first mounting seat 6 is symmetrically arranged between the two first partitions 2, the first mounting seat 6 is provided with soundproof felt, the cylinder 7 is arranged between the two first mounting seats 6, the area between the box 1 and the second partition 4 is provided with the noise reduction assembly 8 capable of reducing the noise of the motor 9, the noise reduction assembly 8 comprises a second mounting seat 81, an elastic sheet 82 and an arc-shaped seat 83, the area between the box 1 and the second partition 4 is provided with the second mounting seat 81, the second mounting seat 81 is provided with the elastic sheet 82 at the top, the elastic sheet 82 is provided with the arc-shaped seat 83 at the top, the arc-shaped seat 83 is provided with sound-absorbing cotton, the arc-shaped seat 83 is provided with the motor 9, the top plate 5 is provided with the limiting assembly 10 capable of further fixing the motor 9 at the bottom, the limiting assembly 10 comprises a fixing seat 101, an elastic member 102 and an arc-shaped plate 103, the top plate 5 is provided with the fixing seat 101 at the bottom, the fixing seat 101 is symmetrically provided with the elastic member 102, the elastic member 102 is a compression spring, the arc-shaped plate 103 is provided at the bottom of the elastic member 102, the arc-shaped plate 103 is provided with a sound-absorbing layer with a bubble layer on the inner side, the arc-shaped plate 103 is matched with the upper part of the motor 9, the second partition 4 is provided with the gear 12 rotatably on the left side wall, the motor 9 is provided with the pinion 11 on the output shaft, the pinion 11 is engaged with the gear 12, the second partition 4 is provided with the isolation assembly 20 capable of reducing the noise of the gear 12 and the pinion 11 on the left side wall, the isolation assembly 20 comprises a mounting box 201, a liquid injection pipe 203, a sealing plate 204 and an isolation plate 205, the second partition 4 is provided with the mounting box 201 on the left side wall, the mounting box 201 is provided with a mounting groove 202 for loading the gear 12 and the pinion 11, the mounting box 201 is embedded with the liquid injection pipe 203 at the top, the mounting box 201 is provided with the sealing plate 204 on the left side, the sealing plate 204 is provided with the isolation plate 205 on the left side, the isolation plate 205 is composed of multiple sound-absorbing materials, the piston 13 is slidably arranged in the cylinder 7, the connecting rod 14 is rotatably arranged on the piston 13, the other end of the connecting rod 14 is rotatably connected with the gear 12, the cylinder 7 is embedded with the air outlet 15 at the center of the front side, the cylinder 7 is embedded with the air inlet 16 on the front side, the air outlet 15 is provided with the air pipe 17, the air pipe 17 is provided with an inflation head, the box 1 is slidably provided with the sliding plate 18 on the front side, the sliding plate 18 is provided with a T-shaped groove, the T-shaped groove of the sliding plate 18 is used for clamping the air pipe 17, the box 1 is provided with the battery 19 at the top rear side close to the isolation assembly 20,The battery 19 is connected with the motor 9 through a line, and a ventilation opening is arranged at the rear side of the box body 1 close to the motor 9, and a sound-absorbing layer with a bubble layer is arranged between the box body 1 and the first partition plate 2.

[0028] As shown in Figure 3 , Figure 7 and Figure 8 , the placing assembly 21 is further included, which comprises a first sliding block 212, a sliding plate 213, a fixing column 214, a limiting plate 215 and a pull rod 216, a sliding groove 211 is opened at the top front right side of the box body 1, the first sliding block 212 is slidingly arranged in the sliding groove 211 of the box body 1, the sliding plate 213 is arranged at the top of the first sliding block 212, the fixing column 214 is arranged at the top rear side of the sliding plate 213, the limiting plate 215 is symmetrically arranged on the fixing column 214, a slot for clamping the air pipe 17 is opened on the limiting plate 215, and the pull rod 216 is arranged on the sliding plate 213.

[0029] As shown in Figure 3 , Figure 7 and Figure 8 , the mounting box 22 and the supporting assembly 23 are further included, the mounting box 22 is arranged at the bottom of the box body 1, the supporting assembly 23 for assisting is arranged in the mounting box 22, the supporting assembly 23 comprises a second sliding block 231, a connecting plate 232, a support frame 233, a cylindrical gear 234 and a rack 235, sliding grooves are symmetrically opened at the bottom of the mounting box 22, the second sliding block 231 is slidingly arranged on the sliding groove at the bottom of the mounting box 22, the connecting plate 232 is arranged on the second sliding block 231, the sliding groove 211 is opened at the top of the mounting box 22, the first sliding block 212 is fixedly connected with the adjacent connecting plate 232 at the lower part, the support frame 233 is arranged at the left and right ends of the connecting plate 232, the cylindrical gear 234 is rotationally arranged at the bottom of the box body 1 and symmetrically arranged at the left and right sides, the rack 235 is arranged at the end of the support frame 233 close to the adjacent cylindrical gear 234, and the two racks 235 at the front and back are engaged with the adjacent cylindrical gears 234.

[0030] When the automobile needs to be inflated, the staff member slides the sliding plate 18 to the left, and then pulls the pull rod 216 forward, so that the pull rod 216 drives the sliding plate 213 to move forward, and then the limiting plate 215 drives the air pipe 17 to move forward, so that the staff member can take the air pipe 17 and connect the inflation head with the inflation port of the tire, at the same time, when the sliding plate 213 moves forward, the first sliding block 212 drives the connecting plate 232 at the front to move forward, the connecting plate 232 drives the cylindrical gear 234 to rotate through the rack 235, the cylindrical gear 234 drives the rack 235 at the rear to move backward, and then the four support frames 233 are stretched out, the arc-shaped support frames 233 are in contact, so that the contact area of the device with the ground is small, and the transmission of noise is reduced.

[0031] The elastic sheet 82 and the arc-shaped seat 83 of the noise reduction assembly 8, the arc-shaped seat 83 having sound-absorbing cotton therein, the elastic piece 102 and the arc-shaped plate 103 of the limiting assembly 10, the arc-shaped plate 103 having a sound-absorbing layer with a bubble layer on the inner side, the vibration generated by the motor 9 can be absorbed and dispersed by the elastic sheet 82 and the elastic piece 102, thereby reducing the transmission of vibration to the box 1 and the external environment, the noise reduction assembly 8 and the limiting assembly 10 are used to weaken the vibration amount of the path through which the vibration of the motor 9 is transmitted to the box 1 by the motor 9, so that the resonance phenomenon of the motor 9 and the box 1 is weakened, and the effect of noise reduction is achieved. The sound insulation felt is arranged in the first mounting seat 6, which further improves the sound absorption effect on the cylinder body 7. The mounting box 201, the sealing plate 204 and the isolation plate 205 protect the large gear 12 and the small gear 11, reduce the transmission of noise, and at the same time, lubricating liquid can be added according to the liquid injection pipe 203 to prevent noise caused by hard fit of the large gear 12 and the small gear 11.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A low noise, vehicle mounted, electric air pump characterized by: The utility model provides box (1), first baffle (2) is arranged in the top front side left and right of box (1), horizontal plate (3) is arranged in the top middle side of box (1), second baffle (4) is arranged in the top rear side middle part of box (1), top plate (5) is arranged in the top of box (1), first mounting seat (6) is symmetrically arranged between two first baffles (2), cylinder (7) is arranged between two first mounting seats (6), the area between box (1) and second baffle (4) is provided with the noise reduction assembly (8) that can carry out the noise reduction of motor (9), the limiting assembly (10) that can further fix motor (9) is arranged in the bottom of top plate (5), the left side wall of second baffle (4) rotationally is provided with big gear (12), the output shaft of motor (9) is provided with pinion (11), pinion (11) is engaged with big gear (12), the left side wall of second baffle (4) is provided with the isolation assembly (20) that can carry out the noise reduction of big gear (12) and pinion (11), piston (13) is slidably arranged in cylinder (7), connecting rod (14) is rotationally arranged on piston (13), one end of connecting rod (14) is rotationally connected with the position of deviation of big gear (12), the front side center of cylinder (7) is embedded with air outlet (15), the front side deviation of cylinder (7) is embedded with air inlet (16), air pipe (17) is arranged on air outlet (15), air pipe (17) is provided with inflation head, the front side of box (1) is slidably provided with slide plate (18), the slide plate (18) is opened to a slot, the slot of slide plate (18) is used for clamping air pipe (17), the rear side of the top of box (1) is provided with battery (19) near the position of isolation assembly (20), battery (19) is connected with motor (9) through circuit, further include placing assembly (21), placing assembly (21) includes first sliding block (212), the top front side right side of box (1) is opened to slide groove (211), the first sliding block (212) is slidably arranged in the slide groove (211) of box (1), the top of first sliding block (212) is provided with sliding plate (213), the top rear side of sliding plate (213) is provided with fixed column (214), the fixed column (214) is symmetrically provided with limiting plate (215) up and down, the slot of limiting plate (215) is opened and is clamped air pipe (17), the pull rod (216) is arranged on the sliding plate (213), further include installation box (22) and support assembly (23), the bottom of box (1) is provided with installation box (22), installation box (22) is provided with support assembly (23) for assisting in, support assembly (23) includes second sliding block (231), the bottom of installation box (22) is opened to slide groove symmetrically before and after, the second sliding block (231) is slidably arranged on the slide groove of the bottom of installation box (22),The second sliding block (231) is provided with a connecting plate (232), the mounting box (22) is provided with a sliding groove (211) on the top, the lower part of the first sliding block (212) is fixedly connected with the adjacent connecting plate (232), the left and right ends of the connecting plate (232) are provided with supporting frames (233), the inner bottom of the box body (1) is rotatably provided with a cylindrical gear (234) on the left and right sides, the ends of the supporting frames (233) close to the cylindrical gears (234) are provided with racks (235), and the front and rear racks (235) are meshed with the adjacent cylindrical gears (234).

2. A low noise, electric air pump for vehicles as claimed in claim 1, wherein: The noise reduction assembly (8) comprises a second mounting base (81), and a region between the box (1) and the second partition plate (4) is provided with the second mounting base (81); a plurality of elastic sheets (82) are arranged at the top of the second mounting base (81) in a spaced manner; an arc-shaped seat (83) is arranged at the top of each elastic sheet (82); and a motor (9) is mounted on the arc-shaped seat (83).

3. A low noise, electric air pump for vehicles as claimed in claim 2 wherein: The limiting assembly (10) comprises a fixing seat (101), and the bottom of the top plate (5) is provided with the fixing seat (101); a plurality of elastic members (102) are symmetrically arranged on the fixing seat (101); an arc-shaped plate (103) is arranged at the bottom of each elastic member (102); and the arc-shaped plate (103) is matched with the upper portion of the motor (9).

4. A low noise, electric air pump for vehicles as claimed in claim 3 wherein: The isolation assembly (20) comprises a mounting box (201), and the left side wall of the second partition plate (4) is provided with the mounting box (201); the mounting box (201) is provided with a mounting groove (202) for loading the large gear (12) and the small gear (11); a liquid injection pipe (203) is embeddedly arranged at the top of the mounting box (201); a sealing plate (204) is arranged at the left side of the mounting box (201); and an isolation plate (205) is arranged at the left side of the sealing plate (204).

5. A low-noise vehicle-mounted electric air pump as described in claim 4, characterized in that: A ventilation opening is arranged at the rear side of the box (1) and close to the motor (9).

6. A low noise, electric air pump for vehicles as claimed in claim 5 wherein: An air bubble layer and a sound absorption layer are arranged between the box (1) and the first partition plate (2).

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