Air belt drawing structure of inflator

Abstract

The utility model belongs to the technical field of inflators, and particularly relates to an air belt drawing structure of an inflator, which comprises a mounting seat, an inflating device and an air tap are arranged on the mounting seat, an air pipe is arranged between the air tap and the inflating device, the air pipe comprises a fixed pipe connected with the inflating device, a telescopic extension pipe is arranged in the fixed pipe, and the telescopic extension pipe is connected with the inflating device. The air tap is arranged on the extension pipe, and the sealing device is arranged between the fixed pipe and the extension pipe, seals the space between the fixed pipe and the extension pipe and prevents air pumped out by the pumping device from being exhausted from a gap between the fixed pipe and the extension pipe. The air belt drawing structure of the inflator is convenient to store and transport, long in service life and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pumps, and in particular relates to an air belt pulling structure of an air pump. Background Art

[0002] An air pump is an air pump that can draw air into a storage area and then inject or replenish the air needed for various tires and some balls through an air tube and an air nozzle.

[0003] Most air pumps on the market have longer air tubes, which makes it convenient for users to use the air pump to inflate objects. For example, Chinese utility model patent application CN 202221935941.0 discloses a new type of vehicle-mounted air pump, which includes a pump body and a base, an inflation tube connected to the pump body, and an inflation head connected to the inflation tube. It is characterized in that: a tube collecting mechanism is provided in the base, the tube collecting mechanism includes a tube collecting column and a force applying shaft, the tube collecting column is rotatably connected to the inner bottom wall of the base, the force applying shaft is rotatably connected to the side wall of the base, the force applying shaft is provided with a driving bevel gear at one end inside the base, and a driven bevel gear meshing with the driving bevel gear is provided at the top of the tube collecting column, the end of the inflation tube away from the inflation head is connected to the tube collecting column, an inlet and outlet for the inflation tube to pass through is provided on the base, and a handle is provided at the end of the force applying shaft away from the driving bevel gear. The beneficial effects of the utility model are as follows: after using the air pump, the air tube can be stored by simply pulling out the handle and turning the handle, making the use of the air pump simpler and more convenient.

[0004] Although the inflation tube can be curled and stored by the tube-collecting mechanism in the above structure, thereby facilitating the storage and transportation of the air pump, the curvature of the inflation tube is large when curled, and the tube is easily broken and damaged after a long time, affecting the service life of the air pump. In addition, the manufacturing process of the bevel gear is demanding and the manufacturing cost is high. Utility Model Content

[0005] In order to overcome the defects in the prior art, the purpose of the present utility model is to provide an air belt pulling structure for an air pump that is convenient to store and transport, has a long service life and a low production cost.

[0006] The purpose of this utility model is achieved in this way:

[0007] An air belt pulling structure for an air pump includes a mounting base, an air pumping device and an air nozzle are provided on the mounting base, an air pipe is provided between the air nozzle and the air pumping device, the air pipe includes a fixed tube connected to the air pumping device, a retractable extension tube is provided in the fixed tube, the air nozzle is provided on the extension tube, and a sealing device is provided between the fixed tube and the extension tube, the sealing device seals the fixed tube and the extension tube, and prevents the gas pumped out by the air pumping device from being discharged from the gap between the fixed tube and the extension tube.

[0008] The utility model is further configured as follows: the extension tube comprises a detachably connected connection seat and a tube body, the connection seat is slidably arranged in the fixed tube, and the sealing device is arranged on the connection seat.

[0009] The present invention is further configured as follows: a limiting wall is provided on the fixing tube or the mounting seat, and the limiting wall can abut against the connecting seat and prevent the connecting seat from being separated from the fixing tube.

[0010] The utility model is further configured as follows: the inflation device includes an inflation device main body and a connecting head, the connecting head is provided with an external thread and a first sealing groove, the connecting head is provided with an air flow channel connecting the inflation device and the fixed tube, the fixed tube is provided with an internal thread adapted to the external thread, and the first sealing groove is provided with a sealing ring for sealing the gap between the fixed tube and the inflation device.

[0011] The present utility model is further configured as follows: a plug-in hole is provided on the main body of the inflation device, a plug-in portion adapted to the plug-in hole is provided on the connecting head, the air flow channel passes through the plug-in portion and is connected to the main body of the inflation device, an air avoidance groove and an arc-shaped limiting groove are provided at the end of the plug-in hole, a limiting protrusion is provided on the side of the connecting head, the limiting protrusion cooperates with the arc-shaped limiting groove to prevent the plug-in portion from detaching from the plug-in hole; controlling the plug-in portion to rotate in the plug-in hole can cause the limiting protrusion to detach from the arc-shaped limiting groove and enter the air avoidance groove, thereby allowing the plug-in portion to detach from the plug-in hole.

[0012] The utility model is further configured such that: the fixing tube is relatively fixed to the mounting seat or the pumping device, thereby preventing the limiting protrusion from being separated from the arc-shaped limiting groove.

[0013] The utility model is further configured as follows: the mounting seat includes an upper shell and a lower shell that are detachably connected, an installation cavity is provided between the upper shell and the lower shell, the fixing tube is fixedly provided in the installation cavity, and an opening is provided on the side wall of the installation cavity, and the air nozzle can pass through the opening and be exposed to the outside.

[0014] The utility model is further configured as follows: a fixing groove is provided on the lower shell, and a pressure plate is detachably provided on the lower shell, the pressure plate presses the fixing pipe tightly in the fixing groove and presses the air pumping device tightly against the lower shell.

[0015] The utility model is further configured as follows: a positioning groove is provided on the lower shell, a positioning protrusion adapted to the positioning groove is provided on the upper shell, a clamping groove is provided on the lower shell, and an elastic clamping hook adapted to the clamping groove is provided on the upper shell.

[0016] The utility model is further configured as follows: the air pump device is an air pump, a power supply and a circuit board for controlling the air pump are provided on the mounting base, and a charging interface and a discharging interface are provided on the circuit board.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. In the utility model, the air tube can be flexibly extended and retracted through the retractable extension tube and the fixed tube, so as to avoid the air tube being too long or too short during use, and facilitate the user to use the air pump flexibly. The structure is simple and the production cost is low. In addition, the air tube in the structure does not need to be bent when stored, so as to avoid the air tube being broken or damaged, which is conducive to extending the service life of the air tube and the air pump.

[0019] 2. The detachable connection seat and tube body in the utility model facilitate the production and processing of the extension tube, and the structure allows the manufacturer to improve the accuracy of the connection seat, facilitates the stable sliding of the extension tube and the fixed tube, and is beneficial to improving the sealing of the extension tube and the fixed tube; the setting of the limiting wall can prevent the extension tube from accidentally detaching from the fixed tube, making it convenient for users to use the air pump, with a simple structure and convenient production and processing.

[0020] 3. The setting of the connector in the present invention facilitates the flexible connection between the fixed tube and the air pump, which can avoid bending of the fixed tube during assembly, avoid damage to the fixed tube, and avoid bending of the fixed tube affecting the sealing of the connection position between the fixed tube and the extension tube; the structure of the plug-in hole, the plug-in part, the arc-shaped limit groove and the limit protrusion is simple, which is convenient for connecting and disassembling the connector and the air pump, and convenient for assembly and maintenance of the air pump; by fixing the fixed tube to the mounting seat or the air pump so that the limit protrusion and the arc-shaped limit groove are kept connected, it is beneficial to the stable connection between the connector and the air pump, and this structure can avoid the shaking of the fixed tube causing wear at the connection position of the connector and the air pump, which is beneficial to improving the sealing of the connection between the connector and the air pump.

[0021] 4. The arrangement of the upper shell, lower shell and installation cavity in the utility model facilitates the concealed arrangement of the fixed tube, avoids damage to the fixed tube and the connection position between the fixed tube and the air pump, and is beneficial to extending the service life of the air pump; the arrangement of the fixing groove and the pressure plate facilitates the stable installation of the fixed tube and the air pump, and is convenient for the assembly and production of the air pump; the arrangement of the elastic hook and the groove facilitates the rapid installation of the upper shell and the lower shell, and the positioning groove and the positioning protrusion not only facilitate the positioning and installation of the upper shell and the lower shell, but also avoid damage to the elastic hook caused by the force on the upper shell or the lower shell, which is beneficial to extending the service life of the air pump.

[0022] 5. The arrangement of the air pump and the circuit board in the utility model makes it convenient for users to use the air pump, and the arrangement of the power supply, charging interface and discharge interface makes it convenient for users to use the air pump flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is a cross-sectional view of the utility model;

[0025] Figure 3It is an explosion diagram of the utility model;

[0026] Figure 4 This is a schematic structural diagram of the upper shell of the utility model;

[0027] Figure 5 It is a structural diagram of the lower shell of the utility model;

[0028] Figure 6 This is a structural diagram of the medium pressure plate of the utility model;

[0029] Figure 7 This is a partial cross-sectional view of the connection structure between the air pump device and the air pipe in the utility model;

[0030] Figure 8 It is a structural diagram of the main body of the inflating device in the utility model;

[0031] Figure 9 This is a schematic structural diagram of the connector in the present invention;

[0032] Figure 10 It is a cross-sectional view of the trachea in the utility model;

[0033] Figure 11 It is a cross-sectional view of the connecting seat in the utility model.

[0034] The meaning of the numbers in the figure: 1-mounting seat; 11-lower shell; 12-upper shell; 13-mounting cavity; 14-opening;

[0035] 15-positioning slot; 16-cage slot; 17-mounting slot; 18-fixing slot; 19-pressing plate; 111-limiting wall; 121-positioning ridge; 122-elastic hook; 123-control port; 191-first pressing slot; 192-second pressing slot; 2-inflating device; 21-inflating device body; 22-connector; 211-connecting hole; 212-arc-shaped limiting slot; 213-avoidance slot; 221-connecting portion; 222 - limiting protrusion; 223 - external thread; 224 - first sealing groove; 225 - second sealing groove; 226 - airflow channel; 3 - air pipe; 4 - fixing tube; 41 - sliding hole; 42 - internal thread; 5 - extension tube; 51 - tube body; 52 - connecting seat; 53 - air nozzle; 521 - sliding portion; 522 - plug-in protrusion; 523 - third sealing groove; 524 - anti-slip portion; 6 - sealing device; 7 - circuit board; 71 - power supply;

[0036] 72-Charging port; 73-Discharging port; 74-Indicator light; 75-Control button. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to specific embodiments of the present invention:

[0038] See also Figures 1 to 11 As shown, an air belt pulling structure of an air pump includes a mounting base 1, an air pumping device 2 and an air nozzle 53 are provided on the mounting base 1, an air pipe 3 is provided between the air nozzle 53 and the air pumping device 2, and the air pipe 3 includes a fixed tube 4 connected to the air pumping device 2, a retractable extension tube 5 is provided in the fixed tube 4, the air nozzle 53 is provided on the extension tube 5, and a sealing device 6 is provided between the fixed tube 4 and the extension tube 5, the sealing device 6 seals the fixed tube 4 and the extension tube 5, and prevents the gas pumped out by the air pumping device 2 from being discharged from the gap between the fixed tube 4 and the extension tube 5. In this structure, the air pipe 3 can be flexibly extended and retracted through the retractable extension tube 5 and the fixed tube 4, so as to avoid the air pipe 3 being too long or too short during use, so that the user can use the air pump flexibly. The structure is simple and the production cost is low. In this structure, the air pipe 3 does not need to be bent when it is stored, so as to avoid the air pipe 3 being broken or damaged. This is beneficial to extending the service life of the air pipe 3 and the air pump.

[0039] The extension tube 5 described in the present invention includes a detachably connected connecting seat 52 and a tube body 51. The connecting seat 52 is slidably arranged in the fixed tube 4, and the sealing device 6 is arranged on the connecting seat 52. The detachably connected connecting seat 52 and the tube body 51 facilitate the production and processing of the extension tube 5, and this structure facilitates the manufacturer to improve the accuracy of the connecting seat 52, facilitates the stable sliding of the extension tube 5 and the fixed tube 4, and is beneficial to improving the sealing of the extension tube 5 and the fixed tube 4.

[0040] In this embodiment, the fixed tube 4 is preferably a hard tube fitting, a sliding hole 41 is provided in the fixed tube 4, the connecting seat 52 is made of a hard material, and the connecting seat 52 is slidingly connected to the sliding hole 41, the tube body 51 is a high-hardness hose, the tube body 51 can be bent and deformed, and the connecting seat 52 can be driven to slide in the sliding hole 41 through the tube body 51.

[0041] The connecting seat 52 includes a sliding portion 521 slidably connected to the sliding hole 41 and an inserting protrusion 522 inserted in the tube body 51. A third sealing groove 523 is provided on the periphery of the movable portion, the sealing device 6 is installed in the third sealing groove 523, and an anti-slip portion 524 is provided on the periphery of the inserting protrusion 522.

[0042] A limiting wall 111 is provided on the fixed tube 4 or the mounting seat 1. The limiting wall 111 can abut against the connecting seat 52 and prevent the connecting seat 52 from detaching from the fixed tube 4. The setting of the limiting wall 111 can prevent the extension tube 5 from accidentally detaching from the fixed tube 4, making it convenient for users to use the air pump. The structure is simple and convenient for production and processing.

[0043] The inflation device 2 described in the present invention includes an inflation device main body 21 and a connecting head 22, the connecting head 22 is provided with an external thread 223 and a first sealing groove 224, the connecting head 22 is provided with an air flow channel 226 connecting the inflation device 2 and the fixed tube 4, the fixed tube 4 is provided with an internal thread 42 adapted to the external thread 223, and the first sealing groove 224 is provided with a sealing ring for sealing the gap between the fixed tube 4 and the inflation device 2. The setting of the connecting head 22 facilitates the flexible connection of the fixed tube 4 and the inflation device 2, which can avoid bending of the fixed tube 4 during assembly, avoid damage to the fixed tube 4, and avoid bending of the fixed tube 4 affecting the sealing of the connection position between the fixed tube 4 and the extension tube 5.

[0044] The utility model is further configured as follows: a plug hole 211 is provided on the main body 21 of the pumping device, a plug portion 221 adapted to the plug hole 211 is provided on the connector 22, an air flow channel 226 passes through the plug portion 221 and is connected to the main body 21 of the pumping device, an air avoidance groove 213 and an arc-shaped limiting groove 212 are provided at the end of the plug hole 211, a limiting protrusion 222 is provided on the side of the connector 22, and the limiting protrusion 222 cooperates with the arc-shaped limiting groove 212 to avoid plugging. The part 221 is disengaged from the plug-in hole 211; the plug-in part 221 is controlled to rotate in the plug-in hole 211 so that the limiting protrusion 222 can be disengaged from the arc-shaped limiting groove 212 and enter the air avoidance groove 213, so that the plug-in part 221 can be disengaged from the plug-in hole 211. The structure of the plug-in hole 211, the plug-in part 221, the arc-shaped limiting groove 212 and the limiting protrusion 222 is simple, which is convenient for connecting and disassembling the connecting head 22 and the air pump 2, and convenient for assembly and maintenance of the air pump.

[0045] In this embodiment, a second sealing groove 225 is provided on the outer periphery of the plug-in portion 221 . A sealing ring is provided in the second sealing groove 225 to seal the gap between the plug-in hole 211 and the plug-in portion 221 .

[0046] The fixing tube 4 is relatively fixed to the mounting seat 1 or the pumping device 2, thereby preventing the limiting protrusion 222 from being separated from the arc-shaped limiting groove 212. By fixing the fixing tube 4 to the mounting seat 1 or the pumping device 2 so that the limiting protrusion 222 and the arc-shaped limiting groove 212 remain connected, it is beneficial to the stable connection between the connecting head 22 and the pumping device 2. This structure can also prevent the shaking of the fixing tube 4 from causing wear at the connection position between the connecting head 22 and the pumping device 2, which is beneficial to improving the sealing of the connection between the connecting head 22 and the pumping device 2. In this embodiment, the fixing tube 4 is relatively fixed to the mounting seat 1.

[0047] The mounting base 1 described in the present invention includes an upper shell 12 and a lower shell 11 that are detachably connected, and an installation cavity 13 is provided between the upper shell 12 and the lower shell 11. The fixing tube 4 is fixedly arranged in the installation cavity 13, and an opening 14 is provided on the side wall of the installation cavity 13. The air nozzle 53 can pass through the opening 14 and be exposed to the outside. The arrangement of the upper shell 12, the lower shell 11 and the installation cavity 13 facilitates the hidden arrangement of the fixing tube 4, avoids damage to the fixing tube 4 and the connection position between the fixing tube 4 and the air pump 2, and is beneficial to extending the service life of the air pump. Preferably, the air pump 2 is also hidden in the installation cavity 13.

[0048] A fixing groove 18 is provided on the lower shell 11, and a pressure plate 19 is detachably provided on the lower shell 11. The pressure plate 19 presses the fixing tube 4 tightly in the fixing groove 18 and presses the air pump 2 tightly against the lower shell 11. The setting of the fixing groove 18 and the pressure plate 19 facilitates the stable installation of the fixing tube 4 and the air pump 2, and is convenient for the assembly and production of the air pump.

[0049] In this embodiment, a limiting wall 111 is provided on the mounting seat 1, and a limiting wall 111 is provided on both the upper shell 12 and the pressure plate 19. A mounting groove 17 and a fixing groove 18 are provided on the lower shell 11. The air pumping device 2 and the fixing tube 4 are respectively provided in the mounting groove 17 and the fixing groove 18. The pressure plate 19 is respectively provided with a first pressing groove 191 and a second pressing groove 192 corresponding to the air pumping device 2 and the fixing tube 4. The first pressing groove 191 presses the air pumping device 2 tightly in the placement groove and fixes the air pumping device 2 relative to the mounting seat 1. The second pressing groove 192 presses the fixing tube 4 tightly in the fixing groove 18 and fixes the fixing tube 4 relative to the mounting seat 1.

[0050] The lower shell 11 is provided with a positioning groove 15, the upper shell 12 is provided with a positioning protrusion 121 adapted to the positioning groove 15, and the lower shell 11 is provided with a card slot 16, and the upper shell 12 is provided with an elastic hook 122 adapted to the card slot 16. The setting of the elastic hook 122 and the card slot 16 facilitates the rapid installation of the upper shell 12 and the lower shell 11, and the positioning groove 15 and the positioning protrusion 121 not only facilitate the positioning and installation of the upper shell 12 and the lower shell 11, but also can avoid the upper shell 12 or the lower shell 11 being subjected to force and causing damage to the elastic hook 122, which is beneficial to extending the service life of the air pump.

[0051] In the present invention, the inflation device 2 is preferably an air pump, and a power supply 71 and a circuit board 7 for controlling the air pump are provided on the mounting base 1, and a charging interface 72 and a discharge interface 73 are provided on the circuit board 7. The setting of the air pump and the circuit board 7 is convenient for the user to use the air pump, and the setting of the power supply 71, the charging interface 72 and the discharge interface 73 is convenient for the user to use the air pump flexibly, and a control port 123 is provided on the upper shell 12, and an indicator light 74 and a control button 75 corresponding to the control port 123 are provided on the circuit board 7.

[0052] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air belt pulling structure for an air pump, comprising a mounting base (1), an air pumping device (2) and an air nozzle (53) provided on the mounting base (1), an air pipe (3) provided between the air nozzle (53) and the air pumping device (2), characterized in that: The air pipe (3) comprises a fixed pipe (4) connected to the air pumping device (2); a retractable extension pipe (5) is provided in the fixed pipe (4); a gas nozzle (53) is provided on the extension pipe (5); and a sealing device (6) is provided between the fixed pipe (4) and the extension pipe (5); the sealing device (6) seals the fixed pipe (4) and the extension pipe (5) and prevents the gas pumped by the air pumping device (2) from being discharged from the gap between the fixed pipe (4) and the extension pipe (5).

2. The air belt pulling structure of an air pump according to claim 1, characterized in that: The extension tube (5) comprises a detachably connected connection seat (52) and a tube body (51); the connection seat (52) is slidably arranged in the fixed tube (4), and the sealing device (6) is arranged on the connection seat (52).

3. The air belt pulling structure of an air pump according to claim 2, characterized in that: A limiting wall (111) is provided on the fixing tube (4) or the mounting seat (1), and the limiting wall (111) can abut against the connecting seat (52) and prevent the connecting seat (52) from being separated from the fixing tube (4).

4. The air belt pulling structure of an air pump according to claim 1, characterized in that: The pumping device (2) comprises an pumping device body (21) and a connector (22); the connector (22) is provided with an external thread (223) and a first sealing groove (224); an air flow channel (226) connecting the pumping device (2) and the fixed pipe (4) is provided in the connector (22); an internal thread (42) adapted to the external thread (223) is provided in the fixed pipe (4); and a sealing ring for sealing the gap between the fixed pipe (4) and the pumping device (2) is provided in the first sealing groove (224).

5. The air belt pulling structure of an air pump according to claim 4, characterized in that: The main body (21) of the inflating device is provided with a plug hole (211), the connector (22) is provided with a plug part (221) adapted to the plug hole (211), the air flow channel (226) passes through the plug part (221) and is connected to the main body (21) of the inflating device, the end of the plug hole (211) is provided with an air avoidance groove (213) and an arc-shaped limit groove (212), and the side of the connector (22) is provided with a limit groove (213). The protrusion (222) cooperates with the arc-shaped limiting groove (212) to prevent the plug-in portion (221) from being disengaged from the plug-in hole (211); the plug-in portion (221) is controlled to rotate in the plug-in hole (211) so that the limiting protrusion (222) is disengaged from the arc-shaped limiting groove (212) and enters the avoidance groove (213), thereby allowing the plug-in portion (221) to be disengaged from the plug-in hole (211).

6. The air belt pulling structure of an air pump according to claim 5, characterized in that: The fixing tube (4) is relatively fixed to the mounting seat (1) or the pumping device (2), thereby preventing the limiting protrusion (222) from being separated from the arc-shaped limiting groove (212).

7. The air belt pulling structure of an air pump according to claim 1, characterized in that: The mounting seat (1) comprises an upper shell (12) and a lower shell (11) which are detachably connected. A mounting cavity (13) is provided between the upper shell (12) and the lower shell (11). The fixing tube (4) is fixedly provided in the mounting cavity (13). An opening (14) is provided on a side wall of the mounting cavity (13). The air nozzle (53) can pass through the opening (14) and be exposed to the outside.

8. The air belt pulling structure of an air pump according to claim 7, characterized in that: The lower shell (11) is provided with a fixing groove (18), and a pressing plate (19) is detachably provided on the lower shell (11). The pressing plate (19) presses the fixing tube (4) into the fixing groove (18) and presses the air pump (2) against the lower shell (11).

9. The air belt pulling structure of an air pump according to claim 8, characterized in that: The lower shell (11) is provided with a positioning groove (15), the upper shell (12) is provided with a positioning protrusion (121) adapted to the positioning groove (15), the lower shell (11) is provided with a clamping groove (16), and the upper shell (12) is provided with an elastic clamping hook (122) adapted to the clamping groove (16).

10. The air belt pulling structure of an air pump according to claim 1, characterized in that: The pumping device (2) is an air pump. A power source (71) and a circuit board (7) for controlling the air pump are provided on the mounting base (1), and a charging interface (72) and a discharging interface (73) are provided on the circuit board (7).

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