Vehicle-mounted inflator pump capable of being automatically expanded

Abstract

The invention discloses an automatically expandable vehicle-mounted inflator pump, and relates to the technical field of inflator pumps, the automatically expandable vehicle-mounted inflator pump comprises an air pump shell, a matrix headlamp is fixedly connected to one side of the air pump shell, the air pump shell is connected with a shell cover through a plurality of bolts, an air pump body is fixedly connected in the air pump shell, and a battery pack is fixedly connected in the air pump shell; the battery pack is connected with the air pump body through an electric wire, two winding frames are arranged in the air pump shell, and the winding frame close to one side of the matrix headlamp is fixedly connected with the air pump shell. The air pipe is neatly, orderly and sequentially wound between the sections of the rotating drums of the left winding frame and the right winding frame circle by circle in advance, extrusion borne by the air pipe during rewinding is reduced, cracks or fractures caused by long-time folding are avoided, the durability of the air pipe is improved, and meanwhile compared with a random winding or loose storage mode, the air pipe is more convenient to use. According to the mode, the air pipe can be stored more compactly, the whole charge pump is more regular, storage is convenient, and space is not occupied.

Description

Technical Field

[0001] The invention relates to the technical field of air pumps, and in particular to an automatically expandable vehicle-mounted air pump. Background Art

[0002] Car charging pumps, also often called car air pumps or car air pumps, are specially designed to quickly inflate tires of cars, bicycles, motorcycles, etc. while traveling, and are also suitable for various balls, inflatable toys, etc. This type of product usually combines portability and functionality, with features such as automatic pump stop, preset pressure value, LED lighting and digital display, ensuring that users can quickly and safely inflate tires in an emergency.

[0003] When the vehicle charging pump is equipped with a long connecting air tube, these air tubes are traditionally exposed or barely coiled around the periphery and internal space of the device. This approach has several significant inconveniences: first, the exposed air tube is easily affected by environmental factors such as dust, friction damage, etc.; second, when trying to curl it up for storage, it is not only cumbersome to operate, but may also cause misalignment due to uneven rolling, which is not only unsightly, but may also take up additional space in the already tight vehicle. What's more, when it is urgently needed, hastily untying an improperly wound air tube will undoubtedly waste precious time and reduce emergency efficiency.

[0004] Based on the above situation, the present invention proposes an automatically expandable vehicle-mounted air pump. Summary of the invention

[0005] In order to overcome the disadvantage of the inconvenience caused by the long air pipe exposed to the outside, the present invention provides an automatically expandable vehicle-mounted air pump.

[0006] An automatically expandable vehicle-mounted air pump includes an air pump housing, a matrix headlight is fixedly connected to one side of the air pump housing, the air pump housing is connected to a shell cover by multiple bolts, an air pump body is fixedly connected to the air pump housing, a battery pack is fixedly connected to the air pump housing, the battery pack and the air pump body are connected by wires, two winding racks are arranged in the air pump housing, the winding rack close to the matrix headlight side is fixedly connected to the air pump housing, and the winding rack away from the matrix headlight side is slidably connected to the air pump housing, and the winding rack away from the matrix headlight side is connected to the air pump housing. A tension spring symmetrically distributed along the air pump housing is fixedly connected, the winding frame is rotatably connected to a rotating drum, the rotating drum is provided with a plurality of sections, an air pipe is orderly wound between the sections of each rotating drum of the left and right winding frames, one end of the air pipe is connected to an air nozzle, the air nozzle is used to connect with the air port of the tire, the other end of the air pipe is connected to the air pump body, a through hole is opened on the side of the air pump housing close to the matrix headlight, one end of the air pipe passes through the through hole, so that the air nozzle is located outside the air pump housing, and the air pump housing is provided with ventilation grooves symmetrically distributed along the air pump housing.

[0007] In addition, it is particularly preferred that it also includes a support plate symmetrically distributed along the air pump housing, the support plate is slidably connected to the lower inner part of the air pump housing, an electromagnet is fixedly connected in the middle of the support plate, and a magnetic block is fixedly connected in the middle of the bottom of the air pump housing. When power is turned on, the electromagnet and the magnetic block are magnetically attracted to each other, and a first spring symmetrically distributed along the support plate is fixedly connected between the support plate and the air pump housing.

[0008] In addition, it is particularly preferred that a fixing frame is further included, wherein the fixing frame is fixedly connected to a side of the air pump body close to the fixed winding frame, the fixing frame is slidably connected to a locking member in the up and down directions, the locking member is used to clamp the movable winding frame, a second spring symmetrically distributed along the locking member is fixedly connected between the locking member and the fixing frame, the air pump housing is slidably connected to a pull rod for pulling the locking member to move downward in the horizontal direction, the pull rod is provided with an oblique groove on a side close to the locking member, and the pull rod is slidably connected to the locking member through the oblique groove.

[0009] In addition, it is particularly preferred that the retaining member is provided with at least two inclined surfaces, and the movable winding frame moves horizontally to contact any inclined surface of the retaining member.

[0010] In addition, it is particularly preferred that it also includes a pressure frame symmetrically distributed along the air pump housing, the pressure frame is slidably connected to the air pump housing in the up and down directions, the movable winding frame pushes the pressure frame to slide downward when moving, and the inside of the air pump housing is fixed with fixed rods symmetrically distributed along the air pump housing, and adjacent fixing rods are slidably connected with a card plate, the card plate is used to fix the support plate extending outward, and the pressure frame is used to push the adjacent card plates, and a third spring is fixed between the card plate and the adjacent fixing rod.

[0011] In addition, it is particularly preferred that a slope is provided on the side of the press frame close to the movable winding frame, and the press frame contacts the movable winding frame through the slope. A slope is also provided on the side of the press frame close to the adjacent card board, and the press frame contacts the adjacent card board through the slope.

[0012] In addition, it is particularly preferred that a fixing bar is further included, the fixing bar is fixedly connected to the support plate on one side, a baffle is fixedly connected to a side of the fixing bar close to the movable winding frame, and the baffle is used to block the movable winding frame.

[0013] In addition, it is particularly preferred that a decelerator is further included for slowing down the resetting of the winding frame, the decelerator is slidably connected in the air pump housing, and a fourth spring symmetrically distributed along the decelerator is fixedly connected between the decelerator and the air pump housing.

[0014] In addition, it is particularly preferred that the deceleration member is uneven, and the movable winding frame intermittently contacts with the protruding extrusion surfaces of the deceleration member during the movement.

[0015] In addition, it is particularly preferred that a limiting block is further included, wherein the limiting block is fixedly connected to a side of the air pump body close to the baffle plate, and cooperates with the baffle plate to limit the movable winding frame.

[0016] Compared with the prior art, the present invention has the following advantages: the air pipe of the present invention is pre-wound neatly and orderly between the sections of the rotating drums of the left and right winding frames, one circle at a time, so that the air pipe is less squeezed when it is rewound, avoiding cracks or breaks caused by long-term folding, and improving the durability of the air pipe. At the same time, compared with random winding or loose storage, this method can make the air pipe more compactly stored, making the charging pump more regular as a whole, convenient to store and does not take up space.

[0017] The present invention uses a locking piece to lock the movable winding frame, and can automatically adjust the extended length of the air pipe, and fix the extended air pipe, that is, there is no need to pull the air pipe all the time during inflation, to prevent the winding frame on the right side from pulling the air nozzle to reset through the air pipe due to the action of the tension spring during inflation, causing the air nozzle to separate from the tire air outlet.

[0018] The present invention automatically extends and extends the support plate, so that when in use, only the legs of the support plate are in contact with the ground, and the bottom of the air pump housing does not contact the ground, thereby avoiding soiling the bottom of the air pump housing. When cleaning, only a small area of ​​the legs of the support plate needs to be cleaned to avoid carrying mud and causing soiling in the vehicle.

[0019] The present invention automatically presses the top of the support plate through the clamping plate when the air pipe is pulled out, thereby preventing the support plate from extending into the air pump housing due to external force factors, thereby improving the stability of the support.

[0020] When the air pump is not in use, the baffle plate and the limit block are used to automatically limit the winding frame on the right side so as to stabilize the air pipe and prevent the air pipe from shaking inside.

[0021] The present invention provides a deceleration member when the tension spring rebounds and resets, so that the winding frame on the right side can decelerate and slowly move back to the right after passing through the deceleration member, thereby preventing the tension spring from rebounding too quickly, thereby preventing the air nozzle from hitting the air pump housing during reset, so that the stress is concentrated on the air nozzle, thereby preventing the air nozzle from cracking. The limit block can also prevent the winding frame on the right side from over-resetting under the action of the tension spring, so as to enhance this effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the air pump body, battery pack, winding frame and other components of the present invention.

[0024] Figure 3 The present invention is a three-dimensional structural schematic diagram of the air pump housing, housing cover, air pump body and other components separated.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the winding frame, rotating drum, air pipe and other components separated from each other according to the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing frame, the locking member, the second spring and other components of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the retaining member, the second spring, the pull rod and other components of the present invention.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of components such as a press frame, a fixing rod and a clamping plate of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing rod, the clamping plate, the third spring and other components of the present invention.

[0030] Fig. 9It is a three-dimensional structural schematic diagram of the winding frame, fixing strips, baffles and other components of the present invention.

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the air pump housing, the retarder and the fourth spring of the present invention.

[0032] In the figure: 1. air pump housing, 101. matrix headlight, 2. shell cover, 3. air pump body, 4. battery pack, 5. winding frame, 501. tension spring, 6. rotating drum, 7. air pipe, 701. air nozzle, 702. through hole, 703. ventilation groove, 8. support plate, 9. electromagnet, 10. magnetic block, 11. first spring, 12. fixing frame, 13. positioning piece, 14. second spring, 15. pull rod, 16. pressure frame, 17. fixing rod, 18. clamping plate, 19. third spring, 20. fixing strip, 21. baffle, 22. retarder, 23. fourth spring, 24. limit block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0034] Embodiment 1: An automatically expandable vehicle-mounted air pump, such as Figure 1-Figure 4 As shown, it includes an air pump housing 1, a matrix headlight 101 is fixedly connected to the left side of the air pump housing 1, the air pump housing 1 is connected to a shell cover 2 by multiple bolts, an air pump body 3 is fixedly connected to the left part of the air pump housing 1, a battery pack 4 is fixedly connected to the right part of the air pump housing 1, the battery pack 4 and the air pump body 3 are connected by wires, and two left and right winding racks 5 are arranged in the air pump housing 1, the winding rack 5 on the left is fixedly connected to the air pump housing 1, and the winding rack on the right is slidably connected to the air pump housing 1, and a pulling rod symmetrically distributed along the front and back of the air pump housing 1 is fixedly connected between the winding rack 5 on the right and the air pump housing 1 Spring 501, a rotating drum 6 is rotatably connected to the winding frame 5, and the rotating drum 6 is provided with a plurality of sections. An air pipe 7 is orderly wound between the sections of each rotating drum 6 of the left and right winding frames 5, one end of the air pipe 7 is connected with an air nozzle 701, and the air nozzle 701 is used to communicate with the air port of the tire, and the other end of the air pipe 7 is connected with the air pump body 3. A through hole 702 is opened on the left side of the air pump housing 1, and one end of the air pipe 7 passes through the through hole 702, so that the air nozzle 701 is located outside the air pump housing 1, and the air pump housing 1 is provided with three ventilation grooves 703 symmetrically distributed front and back along the air pump housing 1.

[0035] like Figure 2As shown, it also includes a support plate 8 symmetrically distributed along the front and back of the air pump housing 1, the support plate 8 is slidably connected to the lower part of the air pump housing 1, an electromagnet 9 is fixedly connected in the middle of the support plate 8, and a magnetic block 10 is fixedly connected in the middle of the bottom of the air pump housing 1. When power is turned on, the electromagnet 9 and the magnetic block 10 are magnetically attracted to cooperate, and a first spring 11 symmetrically distributed along the left and right of the support plate 8 is fixedly connected between the support plate 8 and the air pump housing 1.

[0036] The air pipe 7 is pre-wound neatly and orderly between the sections of each rotating drum 6 of the left and right winding frames 5, one circle at a time, so that the extrusion of the air pipe 7 is reduced, cracks or breaks caused by long-term folding are avoided, and the durability of the air pipe 7 is improved. At the same time, compared with the method of random winding or loose storage, this method can make the air pipe 7 more compactly stored, making the charging pump more regular as a whole, convenient to store and space-saving. When the tire needs to be inflated, the air nozzle 701 is pulled outward, and the air nozzle 701 pulls out the air pipe 7. The air pipe 7 pulls the winding frame 5 and the rotating drum 6 on the right to move to the left together, and the tension spring 501 is stretched, so that the air nozzle 701 is pulled to the tire air outlet, and then the air pump body 3 is started to inflate the tire. In this way, the matrix headlight 101 lights up at the same time, which has the effect of expanding the field of vision, making it convenient to align the air nozzle 701 with the tire air outlet when the environment is dark.

[0037] Before pulling the air nozzle 701 outward, first control the electromagnet 9 to be energized so that the electromagnet 9 attracts the magnetic block 10, and the electromagnet 9 drives the support plate 8 to automatically move downward and extend, and the first spring 11 is compressed. In this way, when the air pump needs to be taken out of the car and placed on the ground, only the legs of the support plate 8 are in contact with the ground, and the bottom of the air pump housing 1 will not be in contact with the ground, so as to avoid dirtying the bottom of the air pump housing 1. When cleaning, only a small area of ​​the legs of the support plate 8 needs to be cleaned to avoid carrying mud and causing the interior of the car to be dirty.

[0038] After the inflation is completed, the air pump body 3 is closed, and the matrix headlight 101 is turned off at the same time. Then the air nozzle 701 is separated from the air outlet of the tire. The tension spring 501 is reset to drive the winding frame 5 on the right to slide to the right and reset, thereby pulling the air pipe 7 and the rotating drum 6 to move to the right together and retract into the air pump housing 1. Finally, the support plate 8 is cleaned, and the electromagnet 9 is controlled to be powered off. The first spring 11 pulls the support plate 8 into the air pump housing 1.

[0039] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 6As shown, it also includes a fixing frame 12, which is fixedly connected to the side of the winding frame 5 close to the left side of the air pump body 3, and the fixing frame 12 is slidably connected to a locking member 13 along the up and down directions. The locking member 13 is used to clamp the winding frame 5 on the right side, and the locking member 13 is provided with three inclined surfaces. The winding frame 5 on the right side moves to contact any inclined surface of the locking member 13, and a second spring 14 symmetrically distributed along the left and right sides of the locking member 13 is fixedly connected between the locking member 13 and the fixing frame 12. The air pump housing 1 is slidably connected to a pull rod 15 for pulling the locking member 13 to move downward along the left and right directions, and an inclined groove is provided on the side of the pull rod 15 close to the locking member 13, and the pull rod 15 is slidably connected to the locking member 13 through the inclined groove.

[0040] When the air pipe 7 pulls the winding frame 5 on the right to move to contact any inclined surface of the locking piece 13, the winding frame 5 on the right will squeeze the locking piece 13 to slide downward, and the second spring 14 is compressed. When the winding frame 5 on the right is disengaged from any inclined surface of the locking piece 13, the second spring 14 is reset to drive the locking piece 13 to slide upward and reset. When the air pipe 7 is pulled out to a suitable length, stop pulling the air nozzle 701 and let go. The winding frame 5 on the right will be automatically limited by the locking piece 13. In this way, the extended length of the air pipe 7 can be adjusted by itself, and the extended air pipe 7 can be fixed, that is, there is no need to pull the air pipe 7 all the time during inflation to prevent the air nozzle 701 from being reset by the air pipe 7 under the action of the tension spring 501 during inflation, causing the air nozzle 701 to be separated from the tire air outlet.

[0041] After being filled with air, pull the pull rod 15 to the left, and the pull rod 15 slides downward through the inclined groove to squeeze the locking piece 13 to release the winding frame 5 on the right. The winding frame 5 on the right automatically slides to the right under the action of the tension spring 501, so that the air pipe 7 is automatically retracted into the air pump housing 1, and then the pull rod 15 is released. The locking piece 13 is reset under the action of the second spring 14, so that the pull rod 15 is pulled to the right to reset.

[0042] like Figure 7 and Figure 8 As shown, it also includes a pressure frame 16 symmetrically distributed along the front and back of the air pump housing 1, and the pressure frame 16 is slidably connected to the air pump housing 1 along the up and down direction. A slope is provided on the side of the pressure frame 1 close to the right winding frame 5, and the pressure frame 16 contacts the winding frame 5 on the right side through the slope. The winding frame 5 on the right side pushes the pressure frame 16 to slide downward when moving. The front and back sides of the air pump housing 1 are fixedly connected with fixing rods 17 symmetrically distributed along the left and right of the air pump housing 1, and a card plate 18 is slidably connected between adjacent fixing rods 17 along the front and back direction. The card plate 18 is used to fix the support plate 8 extending outward, and the bottom of the pressure frame 16 is also provided with an inclined surface, and the pressure frame 16 contacts the adjacent card plate 18 through the inclined surface at the bottom, and the pressure frame 16 is used to push the adjacent card plate 18 so that the card plate 18 presses the top of the support plate 8 extending outward, and a third spring 19 is fixedly connected between the card plate 18 and the adjacent fixing rod 17.

[0043] In order to prevent the support plate 8 from extending into the air pump housing 1 due to external forces, it is necessary to automatically press the top of the support plate 8 through the clamping plate 18 when the air pipe 7 is pulled out to improve the stability of the support. The specific operation is as follows:

[0044] When the electromagnet 9 is energized, the support plate 8 extends outward, and then the winding frame 5 on the right moves to the left and contacts the inclined surface on the right side of the pressing frame 16, so that the pressing frame 16 slides downward along the air pump housing 1, and the inclined surface at the bottom of the pressing frame 16 squeezes the card plate 18 to slide toward the side close to the adjacent support plate 8, and the third spring 19 is compressed, so that the card plate 18 is pressed on the top of the support plate 8.

[0045] When the winding frame 5 on the right moves to the right and disengages from the pressing frame 16, the third spring 19 resets and drives the card plate 18 to slide to the side away from the adjacent support plate 8. The card plate 18 pushes the pressing frame 16 to slide upward along the air pump housing 1 and reset through the inclined surface at the bottom of the pressing frame 16.

[0046] Embodiment 3: Based on embodiment 2, Fig. 9 As shown, a fixing bar 20 is also included. The fixing bar 20 is fixedly connected to the rear support plate 8. A baffle 21 is fixedly connected to the upper side of the fixing bar 20 near the right winding rack 5. The baffle 21 is used to block the winding rack 5 on the right.

[0047] When the electromagnet 9 is energized, the support plate 8 drives the fixing bar 20 to move downward, thereby driving the baffle 21 to move downward, so that the baffle 21 no longer blocks the winding frame 5 on the right side, so that the air pipe 7 can be pulled out, so that the air nozzle 701 can be connected to the air port of the tire.

[0048] When the electromagnet is powered off, the support plate 8 drives the fixing bar 20 to move upward, thereby driving the baffle 21 to move upward, so that the baffle 21 blocks the winding frame 5 on the right side again. In this way, when the air pump is not in use, the winding frame 5 on the right side is limited to stabilize the air pipe 7 and prevent the air pipe 7 from shaking inside.

[0049] like Fig.10 As shown, it also includes a decelerator 22 for slowing down the resetting of the winding frame 5 on the right side. The decelerator 22 is slidably connected to the air pump housing 1. The decelerator 22 is uneven. During the movement of the winding frame 5 on the right side, it intermittently contacts the protruding extrusion surfaces of the decelerator 22. A fourth spring 23 is fixed between the decelerator 22 and the air pump housing 1 and is symmetrically distributed along the left and right sides of the decelerator 22.

[0050] When the tension spring 501 rebounds and resets, in order to prevent the tension spring 501 from rebounding too quickly, a deceleration member 22 is provided so that the winding frame 5 on the right can decelerate and slowly move back to the right after passing through the deceleration member 22, and the fourth spring 23 deforms and resets adaptively.

[0051] like Fig. 9 As shown, it also includes a limiting block 24, which is fixed to one side of the air pump body 3 close to the baffle 21, and cooperates with the baffle 21 to limit the winding frame 5 on the right side.

[0052] On the basis of the baffle 21, a limit block 24 is added to further limit the winding frame 5 on the right side, thereby further stabilizing the air pipe 7. In addition, the limit block 24 can also prevent the winding frame 5 on the right side from being over-reset under the action of the tension spring 501, thereby preventing the air nozzle 701 from hitting the air pump housing 1 during resetting, so that the stress is concentrated on the air nozzle 701, thereby preventing the air nozzle 701 from cracking.

[0053] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. An automatically expandable vehicle-mounted air pump, comprising an air pump housing (1), the air pump housing (1) being connected to a housing cover (2) via a plurality of bolts, an air pump body (3) being fixedly connected to the air pump housing (1), a battery pack (4) being fixedly connected to the air pump housing (1), the battery pack (4) being connected to the air pump body (3) via an electric wire, wherein: A matrix headlight (101) is fixedly connected to one side of the air pump housing (1), and two winding frames (5) are arranged in the air pump housing (1). The winding frame (5) close to the matrix headlight (101) is fixedly connected to the air pump housing (1), and the winding frame (5) away from the matrix headlight (101) is slidably connected to the air pump housing (1). A tension spring (501) symmetrically distributed along the air pump housing (1) is fixedly connected between the winding frame (5) away from the matrix headlight (101) and the air pump housing (1), and the winding frame (5) is rotatably connected to a rotating drum (6), and the rotating drum (6) is provided with a plurality of sections, with two left and right sections. An air pipe (7) is wound in order between the sections of each rotating drum (6) of the winding frame (5), one end of the air pipe (7) is connected to an air nozzle (701), and the air nozzle (701) is used to communicate with the air port of the tire. The other end of the air pipe (7) is connected to the air pump body (3), and a through hole (702) is opened on the side of the air pump housing (1) close to the matrix headlight (101). One end of the air pipe (7) passes through the through hole (702), so that the air nozzle (701) is located outside the air pump housing (1), and the air pump housing (1) is provided with air permeable grooves (703) symmetrically distributed along the air pump housing (1).

2. An automatically expandable vehicle-mounted air pump according to claim 1, characterized in that: It also includes a support plate (8) symmetrically distributed along the air pump housing (1), the support plate (8) is slidably connected to the lower part of the air pump housing (1), an electromagnet (9) is fixedly connected in the middle of the support plate (8), and a magnetic block (10) is fixedly connected in the middle of the bottom of the air pump housing (1). When power is turned on, the electromagnet (9) and the magnetic block (10) are magnetically matched, and a first spring (11) symmetrically distributed along the support plate (8) is fixedly connected between the support plate (8) and the air pump housing (1).

3. An automatically expandable vehicle-mounted air pump according to claim 2, characterized in that: The invention also comprises a fixing frame (12), wherein the fixing frame (12) is fixedly connected to a side of the air pump body (3) close to the fixed winding frame (5), and the fixing frame (12) is slidably connected to a retaining member (13) in the up-down direction, and the retaining member (13) is used to retain the movable winding frame (5), and a second spring (14) symmetrically distributed along the retaining member (13) is fixedly connected between the retaining member (13) and the fixing frame (12), and the air pump housing (1) is slidably connected to a pull rod (15) in the horizontal direction for pulling the retaining member (13) to move downward, and an inclined groove is provided on a side of the pull rod (15) close to the retaining member (13), and the pull rod (15) is slidably connected to the retaining member (13) through the inclined groove.

4. The automatically expandable vehicle-mounted air pump according to claim 3, characterized in that: The retaining member (13) is provided with at least two inclined surfaces, and the movable winding frame (5) moves horizontally to contact any inclined surface of the retaining member (13).

5. The automatically expandable vehicle-mounted air pump according to claim 4, characterized in that: It also includes a pressure frame (16) symmetrically distributed along the air pump housing (1), the pressure frame (16) is slidably connected to the air pump housing (1) in the up and down directions, and the movable winding frame (5) pushes the pressure frame (16) to slide downward when moving. The air pump housing (1) is fixedly connected with a fixing rod (17) symmetrically distributed along the air pump housing (1), and a clamping plate (18) is slidably connected between adjacent fixing rods (17). The clamping plate (18) is used to fix the support plate (8) extending outward, and the pressure frame (16) is used to push the adjacent clamping plate (18), and a third spring (19) is fixedly connected between the clamping plate (18) and the adjacent fixing rod (17).

6. The automatically expandable vehicle-mounted air pump according to claim 5, characterized in that: A slope is provided on one side of the pressing frame (16) close to the movable winding frame (5), and the pressing frame (16) contacts the movable winding frame (5) via the slope. A slope is also provided on one side of the pressing frame (16) close to the adjacent card plate (18), and the pressing frame (16) contacts the adjacent card plate (18) via the slope.

7. An automatically expandable vehicle-mounted air pump according to claim 6, characterized in that: It also comprises a fixing bar (20), wherein the fixing bar (20) is fixedly connected to the supporting plate (8) on one side, and a baffle (21) is fixedly connected to the side of the fixing bar (20) close to the movable winding frame (5), wherein the baffle (21) is used to block the movable winding frame (5).

8. An automatically expandable vehicle-mounted air pump according to claim 7, characterized in that: It also includes a deceleration member (22) for slowing down the resetting of the moving winding frame (5); the deceleration member (22) is slidably connected to the air pump housing (1); and a fourth spring (23) symmetrically distributed along the deceleration member (22) is fixedly connected between the deceleration member (22) and the air pump housing (1).

9. An automatically expandable vehicle-mounted air pump according to claim 8, characterized in that: The deceleration member (22) is uneven, and the movable winding frame (5) intermittently contacts the protruding extrusion surfaces of the deceleration member (22) during the movement.

10. An automatically expandable vehicle-mounted air pump according to claim 9, characterized in that: It also includes a limiting block (24), which is fixed to a side of the air pump body (3) close to the baffle (21) and cooperates with the baffle (21) to limit the movable winding frame (5).

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