Telescopic air pump structure

Abstract

The utility model discloses a telescopic air pump structure which comprises a rotating device, a driving seat, a guide seat, a telescopic seat and a sealing seat, the rotating device is provided with a driving shaft and a positioning shell extending upwards, the positioning shell extends upwards from the wall surface of the rotating device, the driving seat is connected with the driving shaft, the guide seat is connected with the telescopic seat, and the sealing seat is connected with the telescopic seat. The driving seat is provided with a closed-loop arc-shaped groove along the peripheral wall of the driving seat, the arc-shaped groove is provided with non-same plane positions, the guide seat is arranged in the lower cavity, the telescopic seat is provided with a swing pin which is rotatably arranged in the lower cavity, the end portion of the swing pin penetrates through the guide groove and then is clamped in the arc-shaped groove, the upper wall of the telescopic seat is further provided with an upper cavity, and the lower wall of the upper cavity is provided with a lower cavity. When the rotating device rotates, the arc-shaped groove drives the swing pin to slide in the height direction of the guide groove and drives the upper cavity to vertically move between the position close to the sealing seat and the position away from the sealing seat, and air pressure between the upper cavity and the sealing cavity is switched between compression and release.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air pump, especially a telescopic air pump structure. BACKGROUND

[0002] The existing air pump generally adopts electromagnetic valve and air pump cooperation to control the switching of positive and negative pressure, and the switching process of positive and negative air pressure is blocked or stagnant, which affects the stability of switching. At the same time, the existing air pump is generally composed of multiple structures, so the consistency is poor, and when installing or assembling in the product, the design of the product shell needs to be adjusted according to the shape or work of the air pump, so the production cost is increased. SUMMARY

[0003] The main purpose of the utility model is to provide a telescopic air pump structure, which aims to improve the existing switching cup driving structure of positive and negative air pressure, adopts linear drive air pump, does not need to additionally increase electromagnetic valve and other structures, can realize the switching of positive and negative air pressure, and has no jamming problem in switching gap.

[0004] In order to achieve the above purpose, the utility model provides a telescopic air pump structure, which comprises:

[0005] The rotating device is provided with a driving shaft, the rotating device is provided with an upward extending positioning shell, the positioning shell is arranged upward from the wall surface of the rotating device, the positioning shell is located on the outer wall of the rotating device, and the positioning shell is located on the upper wall of the rotating device to form a containing cavity;

[0006] The driving seat is connected with the driving shaft, the driving seat is provided with a closed arc slot along the outer peripheral wall, and the arc slot is provided with non-same plane position;

[0007] The guide seat is fixedly installed between the positioning shell and the rotating device, the guide seat is provided with an inner cavity, the driving seat is arranged in the inner cavity, and the guide seat is provided with a guide slot arranged along the height thereof;

[0008] The telescopic seat is provided with a lower chamber, the guide seat is arranged in the lower chamber, the telescopic seat is provided with a swing pin arranged in rotation in the lower chamber, the end of the swing pin is clamped in the arc slot after passing through the guide slot, and the upper wall of the telescopic seat is further provided with an upper chamber;

[0009] The sealing seat is fixedly arranged at the upper end of the positioning shell, the sealing seat is provided with a sealing cavity, the outer wall or the inner wall of the sealing seat is matched with the upper chamber,

[0010] When the rotating device rotates, the arc-shaped groove drives the swing pin to slide along the height direction of the guide groove, drives the upper chamber to move vertically between the position close to the sealing seat or the position away from the sealing seat, and switches the air pressure between the upper chamber and the sealing cavity between compression and release.

[0011] In the actual design, the structure includes a positioning shell, a driving assembly (a rotating device, a driving seat, a guide seat and an extension seat) and a piston assembly (an upper chamber of the extension seat and a sealing seat); the driving assembly and the piston assembly are taken as a modular structure by taking the positioning shell as a carrier, so that installation and production assembly are facilitated, stability and volume are smaller, the rotating stroke is converted into a vertical stroke through cooperation of the guide groove and the arc-shaped groove, the vertical movement of the upper chamber is driven, the air pressure between the sealing cavity and the upper chamber is switched between the compression or release positions, the switching of positive and negative air pressures is realized, the switching is more linear, the product is modularized for production through the positioning shell, installation and production assembly are facilitated, and use stability and market competitiveness are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a sectional view of the utility model;

[0013] Figure 2 It is an explosion Figure One ;

[0014] Figure 3 It is an explosion Figure Two ;

[0015] Figure 4 It is a three-dimensional schematic view of the utility model;

[0016] Figure 5 It is a schematic view of the cooperation of the driving seat and the swing pin;

[0017] Figure 6 It is a schematic view of the cooperation of the driving seat and the arc-shaped groove;

[0018] Figure 7 It is a schematic view of the extension seat with an extension part.

[0019] In the drawings,

[0020] 1 is a rotating device, 10 is a driving shaft, 11 is a rotating motor, 12 is a speed reducer,

[0021] 2 is a positioning shell, 20 is a positioning cavity,

[0022] 3 is a driving seat, 30 is an arc-shaped groove, 31 is an annular groove, 31a is an upward channel, 31b is a downward channel, 32 is a non-circular shaft groove,

[0023] 4 is a guide seat, 40 is an inner cavity, 41 is a guide groove,

[0024] 5 is an extension seat, 51 is an upper chamber, 52 is a lower chamber,

[0025] 6 is a sealing seat, 60 is a sealing cavity, 61 is a sealing ring, 62 is an opening,

[0026] 7 is a swing pin, 70 is a pivot hole, 71 is a pivot shaft, 72 is an arc-shaped part, 73 is a notch, 74 is a positioning part,

[0027] 81a is a first limiting part, 81b is a first limiting groove, 81c is a first clamping part,

[0028] 82a is a second limiting part, 82b is a second limiting groove, 82c is a second clamping part,

[0029] 91 is a blocking part, 92 is an inner chamfer,

[0030] 100 is a guide hole, 101 is an extension part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the present application involve descriptions of "first" or "second", etc., the descriptions of "first" or "second" are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0034] As Figures 1 to 7 shown in the figure, a telescopic air pump structure, comprising:

[0035] A rotating device 1 is provided with a driving shaft 10, the rotating device 1 is provided with an upward extending positioning shell 2, the positioning shell 2 is provided upwardly extending from the wall surface of the rotating device 1, the positioning shell 2 is located on the outer wall of the rotating device 1, and the positioning shell 2 is located on the upper wall of the rotating device 1 to form a positioning cavity 20;

[0036] A driving seat 3 is connected with the driving shaft 10, the driving seat 3 is provided with a closed arc-shaped groove along the outer peripheral wall thereof, the arc-shaped groove 30 is provided with non-identical plane positions;

[0037] A guide seat 4 is fixedly installed between the positioning shell 2 and the rotating device 1, the guide seat 4 is provided with an inner cavity 40, the driving seat 3 is arranged in the inner cavity 40, and the guide seat 4 is provided with a guide groove 41 arranged along the height thereof;

[0038] A telescopic seat 5 is provided with a lower chamber 52, the guide seat 4 is arranged in the lower chamber 52, the telescopic seat 5 is provided with a swing pin 7 arranged in rotation in the lower chamber 52, the end of the swing pin 7 is clamped in the arc-shaped groove after passing through the guide groove 41, and the upper wall of the telescopic seat 5 is further provided with an upper chamber 51;

[0039] A sealing seat 6 is fixedly arranged at the upper end of the positioning shell 2, the sealing seat 6 is provided with a sealing cavity 60, the outer wall or the inner wall of the sealing seat 6 is in abutment with the upper chamber 51,

[0040] When the rotating device 1 rotates, the arc-shaped groove drives the swing pin 7 to slide along the height direction of the guide groove 41, drives the upper chamber 51 to move vertically between the position close to the sealing seat 6 or the position away from the sealing seat 6, and switches the air pressure between the upper chamber 51 and the sealing cavity 60 between compression and release.

[0041] In actual design, the structure includes the positioning shell 2, the driving assembly (the rotating device 1, the driving seat 3, the guide seat 4 and the telescopic seat 5) and the piston assembly (the upper chamber 51 of the telescopic seat 5 and the sealing seat 6); the driving assembly and the piston assembly are taken as modular structures by taking the positioning shell 2 as a carrier, thereby facilitating installation and production assembly, and the stability and the volume are smaller, which facilitates installation of the structure in product articles, the rotating stroke is converted into vertical stroke through cooperation of the guide groove 41 and the arc-shaped groove, thereby driving vertical movement of the upper chamber 51, switching the air pressure between the sealing cavity 60 and the upper chamber 51 between compression and release, thereby realizing switching of positive and negative air pressure, and the switching process is more linear, and the product modular production is realized through the positioning shell, thereby facilitating production assembly and installation with products, and improving use stability and market competitiveness.

[0042] Specifically, the rotating device 1 is a rotating motor 11 or a rotating motor 11 and a speed reducer 12, and a separate rotating motor 11 or a rotating motor 11 and a speed reducer (also known as a gear box) can be provided according to the design frequency.

[0043] Specifically, the middle part of the rotating motor 11 is in a non-circular shape structure, the positioning shell 2 is composed of two half shells, and the positioning cavity 20 is located at the position of the rotating motor 11 and is clamped on the rotating motor 11.

[0044] Specifically, the two half shells are fixed by cooperating with the first screw or are fixed by using a buckle structure or ultrasonic welding.

[0045] Specifically, the upper end of the inner wall of the positioning cavity 20 extends inwardly and has two first limiting portions 81a arranged at intervals, and a first limiting groove 81a is formed between the two first limiting portions 81a. The upper end of the sealing seat 6 is provided with a first clamping portion 81c matched with the first limiting groove, and the first clamping portion extends into the first limiting groove 81b. Further, the installation and fixation of the sealing seat 6 are realized, so that the basic structure is used as an integrated module, which is convenient for installation in the product.

[0046] Specifically, the middle part of the positioning shell 2 is provided with a second limiting portion 82a extending inwardly, the second limiting portion and the upper wall of the rotating device 1 form a second limiting groove 82b, and the guide seat 4 is provided with a second clamping portion 82c matched with the second limiting groove.

[0047] Specifically, the second clamping portion is fixed to the upper wall of the rotating motor 11 by a second screw, and the positioning shell 2 and the second screw can conveniently limit the guide seat 4, reduce the reaction force generated when the swing pin 7 moves, and improve the use stability.

[0048] Specifically, the driving shaft 10 is in a non-circular shape structure, and the driving seat 3 is provided with a non-circular shaft groove 32 matched with the driving shaft 10.

[0049] Specifically, the arc-shaped groove 30 is composed of two mirror-symmetrical annular grooves 31, and an intersection region is arranged between the two annular grooves 31. The two annular grooves 31 form an upward channel 31a and a downward channel 31b. The swing pin 7 can swing along the annular groove 31, first enters the upward channel 31a, and then moves to the downward channel 31b at the top end of the annular groove 31, thereby realizing the vertical movement of the swing pin 7 through the cooperation of the rotating structure and the annular groove.

[0050] Specifically, the telescopic seat 5 is provided with a pivot hole 70, the swing pin 7 includes a pivot shaft 71 and an arc-shaped portion 72 provided at the end of the pivot shaft 71, the pivot shaft is arranged in the pivot hole 70 and rotates with the swing of the arc-shaped portion 72, and the arc-shaped portion 72 is adapted to the curvature of the arc-shaped groove 30. Further, the arc-shaped portion 72 is moved along the length direction of the arc-shaped groove 30, and the telescopic seat 5 is vertically moved.

[0051] Specifically, the outer wall of the lower end of the telescopic seat 5 is provided with a notch 73, the notch 73 is provided with a positioning portion 74, the positioning portion 74 and the notch 73 are respectively provided with half grooves, and the two half grooves surround the pivot hole 70, which facilitates the installation of the swing pin 7.

[0052] Specifically, the arc-shaped portion 72 extends symmetrically and arc-shapedly from the end of the pivot shaft.

[0053] Specifically, the inner wall of the inner cavity 40 is hexagonal in shape, similar to the outer wall of the telescopic seat 5, which further realizes the guiding effect and ensures the stable vertical movement of the telescopic seat 5.

[0054] Specifically, the outer wall of the lower part of the sealing seat 6 is provided with a groove, the groove is provided with a sealing ring 61, the end of the sealing ring 61 extends out of the outer wall of the sealing seat 6, the inner wall of the upper chamber 51 abuts against the end wall of the sealing ring 61, and the air pressure of the sealed cavity 60 is switched.

[0055] Specifically, the upper end of the sealed cavity 60 is provided with an opening 62 or a connecting hole. According to different products used, the opening 62 can be provided, for example, a positive and negative air pressure switching cup; when used for driving structure, the connecting hole can be provided, and the catheter is directly connected with the connecting hole. The fixed sealing seat 6 can also avoid the need for the shell of the product to be additionally provided with a fixing structure, which is convenient to use and avoids interference during the movement of the existing sealing seat 6.

[0056] Specifically, the sealing ring 61 is provided with at least two groups.

[0057] Specifically, the upper end wall of the positioning shell 2 is provided with an inwardly extending blocking portion 91, the blocking portion is flush with the upper end wall of the sealing seat 6, and the upper end wall of the sealing seat 6 is provided with an inner chamfer 92.

[0058] Specifically, the outer wall of the positioning shell 2 is provided with at least two guide holes 100 distributed along the height thereof, the guide holes penetrate the side wall of the positioning shell 2, the guide holes are provided with telescopic portions 101, and the telescopic portions are fixed to the outer wall of the telescopic seat 5 after penetrating the guide holes.

[0059] Specifically, the telescopic portion extends upward and out of the upper wall of the positioning shell 2, thereby realizing the functions of positive and negative air pressure switching and telescopic driving, and realizing the structure of single movement core achieving double driving.

[0060] Specifically, the telescopic part extends radially and projects the wall surface of the positioning shell 2, thereby realizing different double driving structures.

[0061] The cross section of the telescopic seat 5 in the height direction is in the shape of "H", which facilitates the assembly of the air pump.

[0062] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields under the utility model concept of the present application is included in the patent protection range of the present application.

Claims

1. A telescopic air pump structure, characterized by, The utility model provides a rotary device, drive seat, guide seat, telescopic seat and sealing seat are arranged on the rotary device, when the rotary device rotates, the arc groove drives the swing pin to slide along the height direction of the guide groove, drives the upper chamber to move vertically between the position close to the sealing seat or the position away from the sealing seat, and makes the air pressure between the upper chamber and the sealing cavity switch between compression and release. The utility model discloses a rotary device, drive seat, guide seat, telescopic seat and sealing seat are arranged on the rotary device, when the rotary device rotates, the arc groove drives the swing pin to slide along the height direction of the guide groove, drives the upper chamber to move vertically between the position close to the sealing seat or the position away from the sealing seat, and makes the air pressure between the upper chamber and the sealing cavity switch between compression and release. The rotary device is a rotary motor or a rotary motor and a speed reducer. The middle part of the rotary motor is a non-circular structure, the positioning shell is composed of two half shells, and the accommodation cavity located in the rotary motor is provided with a profiled cavity and clamped to the rotary motor. The upper end of the inner wall of the accommodation cavity extends inwardly and has two spaced first limiting parts, and a first limiting groove is formed between the two first limiting parts. The middle part of the positioning shell extends inwardly and has a second limiting part, the second limiting part and the upper wall of the rotary device form a second limiting groove, and the guide seat has a second clamping part matched with the second limiting groove. The second clamping part is fixed to the upper wall of the rotary motor by a second screw.

2. The structure of claim 1, wherein: The arc groove is composed of two mirror-symmetrical annular grooves, and an intersection area is arranged between the two annular grooves. The telescopic seat has a pivot hole, the swing pin includes a pivot shaft and an arc-shaped part arranged at the end of the pivot shaft, the pivot shaft is arranged in the pivot hole and rotates with the swing of the arc-shaped part, and the arc-shaped part is matched with the curvature of the arc-shaped groove.

3. The structure of the retractable air pump according to claim 1, wherein: The outer wall of the lower end of the telescopic seat has a notch, the notch has a positioning part, the positioning part and the notch respectively have a half groove, and the two half grooves form the pivot hole.

4. The structure of claim 2, wherein: The arc-shaped part extends symmetrically and arcuately from the end of the pivot shaft. The inner wall of the inner cavity is hexagonal in shape and similar to the outer wall of the telescopic seat.

5. The structure of the retractable air pump according to claim 2, wherein: The outer wall of the lower part of the sealing seat has a groove, the groove has a sealing ring, the end of the sealing ring extends out of the outer wall of the sealing seat, and the inner wall of the upper chamber abuts against the end wall of the sealing ring. The utility model discloses a rotary device, drive seat, guide seat, telescopic seat and sealing seat are arranged on the rotary device, when the rotary device rotates, the arc groove drives the swing pin to slide along the height direction of the guide groove, drives the upper chamber to move vertically between the position close to the sealing seat or the position away from the sealing seat, and makes the air pressure between the upper chamber and the sealing cavity switch between compression and release.

6. The structure of the flexible air pump according to claim 5, wherein: ​ 7. The structure of the flexible air pump according to claim 5, wherein: ​ 8. The structure of the flexible air pump according to claim 1, wherein: ​ 9. The structure of the flexible air pump according to claim 1, wherein: ​

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