CN219654831U - Upper cover and single-bidirectional switching high-pressure hand-pulled air pump - Google Patents
Upper cover and single-bidirectional switching high-pressure hand-pulled air pump Download PDFInfo
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- CN219654831U CN219654831U CN202321375271.6U CN202321375271U CN219654831U CN 219654831 U CN219654831 U CN 219654831U CN 202321375271 U CN202321375271 U CN 202321375271U CN 219654831 U CN219654831 U CN 219654831U
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- upper cover
- air
- sealing ring
- screw rod
- hollow screw
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- 238000007789 sealing Methods 0.000 claims abstract description 61
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of hand-pulled air pumps, in particular to an upper cover and a single-double-direction switching high-pressure hand-pulled air pump. The utility model adopts the upper end surface of the upper cover sealing ring as the sealing surface, when in bidirectional work, the sealing can be realized by means of air pressure because the acting force of the high-pressure gas of the upper air chamber to the upper cover sealing ring is upward, and the sealing failure caused by overlarge pressure is not worried.
Description
Technical Field
The utility model relates to the technical field of hand-pulled air pumps, in particular to an upper cover and a single-bidirectional switching high-pressure hand-pulled air pump.
Background
In order to improve the working efficiency of the hand-pulled air pump, various two-way air-filled hand-pulled air pumps appear in the prior art, the process is easier due to the action of self weight of a person when the hand-pulled air pump is pressed down for inflation, but in the process of upward pulling and inflation, when the air pressure of an object to be inflated is larger, the air pump is inflated only by pulling up two hands with great pressure intensity, and at the moment, if the two-way air pump is inflated again, the working efficiency is affected.
The Chinese patent with publication number of CN214887538U discloses a knob type inflating high-pressure hand-pulled air pump, wherein the lower end of a sealing ring is matched with an upper cover to realize sealing by applying pressure to the sealing ring through a spring, so that the connection or disconnection between an upper air chamber and a valve hole is controlled, and although the switching between unidirectional inflation and bidirectional inflation can be realized, when the bidirectional inflation works, the sealing direction of the sealing ring is opposite to the air pressure acting direction of the upper air chamber, and when the air pressure is larger, the requirement on the pressure applied to the spring is higher, and air leakage easily occurs.
Accordingly, there is a need for improvements over the prior art.
Disclosure of Invention
The utility model aims to at least solve one of the technical problems in the prior art, and therefore, one aspect of the utility model aims to provide an upper cover which has good sealing effect and is convenient to switch working states.
Another aspect of the present utility model is directed to a single bi-directional switching high pressure hand pump including the upper cover.
To achieve the above object, an embodiment of one aspect of the present utility model provides an upper cover including:
the upper cover body is provided with a valve hole in the middle part, and a spiral guide structure is arranged on the inner side of the valve hole;
the hollow screw rod is arranged in the valve hole, and a connecting structure in spiral fit with the spiral guide structure is arranged on the outer side of the hollow screw rod;
the upper cover bottom plate is fixedly arranged at the lower end of the upper cover body;
the upper cover sealing ring is arranged between the upper end face of the upper cover bottom plate and the lower end face of the hollow screw rod, and a compression spring is arranged between the upper cover sealing ring and the upper cover bottom plate;
the upper cover sealing ring upper end face is abutted against the hollow screw rod, and the upper cover body is provided with a sealing face matched with the upper cover sealing ring upper end face.
In addition, the upper cover provided by the embodiment of the utility model has the following additional technical characteristics.
According to one embodiment of the utility model, the spiral guide structure is a guide rib fixedly connected to the inner wall of the valve hole, and the connecting structure is a guide groove arranged on the hollow screw; the hollow screw rod upper end is connected with the knob, the outside of knob is provided with the anti-skidding line, drives hollow screw rod through rotating the knob and rotates and reciprocate along the direction muscle, and then with compression spring cooperation control upper cover sealing washer's position.
Preferably, the hollow screw upper end is provided with circumference positioning groove, the knob is including inlayer position sleeve and the outer position sleeve that links firmly, inlayer position sleeve is provided with circumference positioning groove matched with location arch, upper cover body is provided with outer position sleeve assorted ring channel.
Further, still include spring baffle, spring baffle sets up between compression spring and upper cover sealing washer, spring baffle is annular structure, and the inboard middle part of spring baffle is fixed to be provided with the locating bench, and the up end of locating bench is contradicted with the upper cover sealing washer, and the terminal surface is contradicted with compression spring under the locating bench.
The embodiment of the other aspect of the utility model provides a single-double-direction switching high-pressure hand-pulled air pump, which comprises a cylinder body, a piston, a linkage pipe and the upper cover, wherein the piston is arranged in the cylinder body and divides the cylinder body into an upper air chamber and a lower air chamber, the lower end of the linkage pipe is connected with the piston and moves synchronously with the piston, the outer side of the upper cover body is connected with the upper end of the cylinder body in a sealing way, and the linkage pipe penetrates through an upper cover sealing ring, a hollow screw rod and is connected with the upper cover sealing ring in a sealing way.
Further, the piston is provided with an air inlet air guide chamber and an air outlet air guide chamber which are mutually isolated, and the piston is provided with a one-way air outlet structure which is communicated with the air inlet air guide chamber, the upper air chamber and the lower air chamber, and a one-way air inlet structure which is communicated with the air outlet air guide chamber, the upper air chamber and the lower air chamber;
the linkage pipe comprises an outer pipe and an inner pipe, the lower end of the outer pipe is communicated with the air inlet and guide chamber, the lower end of the inner pipe is communicated with the air outlet and guide chamber, the inner pipe is connected with an air outlet, and the outer pipe is connected with an air inlet.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the position of the upper cover sealing ring is controlled through the hollow screw rod and the compression spring, so that the on-off between the upper air chamber and the valve hole is controlled, when the two-way work is performed, the upper cover sealing ring moves upwards and contacts with the sealing surface of the upper cover body, the upper air chamber is sealed, and when the piston moves upwards, the air in the upper air chamber enters the air outlet and guide chamber through the second upper valve port, so that the external work is performed; when the one-way working is performed, the upper cover sealing ring moves downwards and generates a gap with the upper cover body, so that the upper air chamber is communicated with the valve hole, and the upper air chamber is depressurized at the moment and cannot do work outwards.
2. The utility model adopts the upper end surface of the upper cover sealing ring as the sealing surface, when in bidirectional work, the sealing can be realized by means of air pressure because the acting force of the high-pressure gas of the upper air chamber to the upper cover sealing ring is upward, and the sealing failure caused by overlarge pressure is not worried.
Drawings
The following detailed description of the utility model will be given with reference to the accompanying drawings.
FIG. 1 is an exploded view of an upper cover;
FIG. 2 is a cross-sectional view of the upper cover;
FIG. 3 is a schematic view of a high pressure hand pump;
FIG. 4 is a schematic cross-sectional view of a high pressure hand pump;
FIG. 5 is a schematic diagram of the operation of the upper cover in a bi-directional operation state;
FIG. 6 is a schematic diagram of the operation of the upper cover in a unidirectional operation state;
fig. 7 is a schematic diagram of a piston structure.
In the figure: the device comprises a 1-cylinder body, a 11-upper air chamber, a 12-lower air chamber, a 13-space, a 2-piston, a 21-air outlet air guide chamber, a 22-air inlet air guide chamber, a 23-piston ring, a 24-first upper valve port, a 24 a-first upper breathing valve plate, a 25-first lower valve port, a 25 a-first lower breathing valve plate, a 26-second upper valve port, a 26 a-second upper breathing valve plate, a 27-second lower valve port, a 27-second lower valve plate, a 27 a-second lower breathing valve plate, a 3-pressure gauge, a 4-linkage tube, a 41-outer tube, a 42-inner tube, a 5-upper cover body, a 51-hollow screw, a 52-upper cover sealing ring, a 53-spring baffle, a 54-compression spring, a 55-upper cover bottom plate, a 56-gap, a 57-valve hole, a 58-guide rib, a 59-guide groove, a 6-knob, a 61-inner layer positioning sleeve, a 62-outer layer positioning sleeve, a 7-grip, a 71-air outlet and a 72-air inlet.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
as shown in fig. 1 and 2, an upper cover includes an upper cover body 5, a hollow screw rod 51, an upper cover seal ring 52, a spring baffle 53 and an upper cover bottom plate 55, wherein the hollow screw rod 51, the upper cover seal ring 52, the spring baffle 53 and the upper cover bottom plate 55 are sequentially disposed in the upper cover body 5 from top to bottom.
The middle part of upper cover body 5 is provided with valve opening 57, and the valve opening 57 inboard is provided with spiral guide structure, and spiral guide structure can adopt internal thread structure or direction muscle, and this implementation adopts the direction muscle. The hollow screw rod 51 is disposed in the valve hole 57, and a connection structure which is in screw fit with the screw guide structure is disposed outside the hollow screw rod 51. By rotating the hollow screw 51, the hollow screw 51 can be moved up and down.
The upper end of the hollow screw rod 51 is connected with a knob 6, the knob 6 comprises an inner layer locating sleeve 61 and an outer layer locating sleeve 62 which are fixedly connected, a circumferential locating groove is formed in the upper end of the hollow screw rod 51, the inner layer locating sleeve 61 is provided with a locating protrusion 63 matched with the circumferential locating groove, circumferential limiting is achieved, anti-skid patterns are formed in the outer side of the knob 6, and the hollow screw rod 51 can be driven to rotate by rotating the knob 6.
The upper cover body 5 is provided with an annular groove matched with the outer layer positioning sleeve 62, and the outer layer positioning sleeve 62 can move up and down or rotate along the annular groove.
The upper cover bottom plate 55 is fixedly arranged at the lower end of the upper cover body 5, an upper cover sealing ring 52 is arranged between the upper end surface of the upper cover bottom plate 55 and the lower end surface of the hollow screw rod 51, a compression spring 54 is arranged between the upper cover sealing ring 52 and the upper cover bottom plate 55, and the upper cover sealing ring 52 is ensured to move along with the hollow screw rod 51 through the compression spring 54. The upper cover body 5 is provided with a sealing surface matched with the upper end surface of the upper cover sealing ring 52.
In order to limit the springs and the upper cover sealing rings, a spring baffle plate 53 is further arranged, the spring baffle plate 53 is arranged between the compression springs 54 and the upper cover sealing rings 52, the spring baffle plate 53 is of an annular structure, a positioning table is fixedly arranged in the middle of the inner side of the spring baffle plate 53, the upper end face of the positioning table is in contact with the upper cover sealing rings 52, and the lower end face of the positioning table is in contact with the compression springs 54.
Example 2:
as shown in fig. 3 to 7, a single-direction and two-direction switching high-pressure hand-pulled air pump comprises a cylinder body 1, a piston 2, a linkage pipe 4 and an upper cover disclosed in embodiment 1, wherein the structure and connection relation of the cylinder body 1, the piston 2 and the linkage pipe 4 can adopt the related structure of the knob type inflatable high-pressure hand-pulled air pump in the background art.
The piston 2 is arranged in the cylinder body 1 and divides the cylinder body 1 into an upper air chamber 11 and a lower air chamber 12, the lower end of the linkage pipe 4 is connected with the piston 2 and moves synchronously with the piston 2, the outer side of the upper cover body 5 is connected with the upper end of the cylinder body 1 in a sealing way, and the linkage pipe 4 penetrates through the upper cover sealing ring 52 and the hollow screw 51 and is connected with the upper cover sealing ring 52 in a sealing way.
The periphery of the piston 2 is embedded with a piston ring 23, an air inlet air guide chamber 22 and an air outlet air guide chamber 21 which are independent of each other are arranged in the piston 2, and a unidirectional air outlet structure which is communicated with the air inlet air guide chamber 22, the upper air chamber 11 and the lower air chamber 12 and a unidirectional air inlet structure which is communicated with the air outlet air guide chamber 21, the upper air chamber 11 and the lower air chamber 12 are arranged on the piston 2.
Specifically, the upper and lower piston surfaces of the intake air guide chamber 22 are formed with a first upper valve port 24 and a first lower valve port 25, the first upper valve port 24 is provided with a first upper breathing valve plate 24a for allowing only air to enter the upper air chamber 11 from the intake air guide chamber 22, and the first lower valve port 25 is provided with a first lower breathing valve plate 25a for allowing only air to enter the lower air chamber 12 from the intake air guide chamber 22.
A second upper valve port 26 and a second lower valve port 27 are formed on the upper and lower piston surfaces of the air outlet guide chamber 21, a second upper breathing valve plate 26a for allowing only air to enter the air outlet guide chamber 21 from the upper air chamber 11 is arranged on the second upper valve port 26, and a second lower breathing valve plate 27a for allowing only air to enter the air outlet guide chamber 21 from the lower air chamber 12 is arranged on the second lower valve port 27.
The two sides of the center of the handle 7 are respectively provided with an air inlet 72 and an air outlet 71, the linkage pipe 4 comprises an outer pipe 41 and an inner pipe 42, the lower end of the outer pipe 41 is communicated with the air inlet guide chamber 22, the lower end of the inner pipe 42 is communicated with the air outlet guide chamber 21, the inner pipe 42 is communicated with the air outlet 71, and the outer pipe 41 is communicated with the air inlet 72. A pressure gauge 3 is fixed above the grip 7, and a pressure sensing end 81 of the pressure gauge 3 extends downwards into the upper end of the inner tube 3.
Working principle:
two-way operating condition: by rotating the knob 6, the screw rod 51 is driven to rotate, the screw rod 51 is lifted to the highest position under the cooperation of the guide groove of the screw rod 51 and the guide rib 58 of the upper cover, and the upper cover sealing ring 52 is tightly matched with the upper cover 5 under the elastic force of the spring 54, so that the upper air chamber 11 and the valve hole 57 are blocked.
Unidirectional working state: the screw rod 51 is driven to rotate by rotating the knob 6, the screw rod 51 moves downwards under the cooperation of the guide groove of the screw rod 51 and the guide rib 58 of the upper cover, the upper cover sealing ring 52 is pushed to move downwards while the screw rod 51 moves downwards, and a gap 56 is formed between the upper cover sealing ring 52 and the upper cover 5, so that the sealing effect between the upper cover sealing ring 52 and the upper cover 5 is lost, and the upper air chamber 11 is communicated with the valve hole 57.
The preferred embodiments of the present utility model have been described in detail, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model, and the various changes are included in the scope of the present utility model.
Claims (6)
1. An upper cover, comprising:
the upper cover comprises an upper cover body (5), wherein a valve hole (57) is formed in the middle of the upper cover body (5), and a spiral guide structure is arranged on the inner side of the valve hole (57);
the hollow screw rod (51) is arranged in the valve hole (57), and a connecting structure in spiral fit with the spiral guide structure is arranged on the outer side of the hollow screw rod (51);
an upper cover bottom plate (55) fixedly arranged at the lower end of the upper cover body (5);
an upper cover sealing ring (52) arranged between the upper end surface of the upper cover bottom plate (55) and the lower end surface of the hollow screw rod (51), and a compression spring (54) arranged between the upper cover sealing ring (52) and the upper cover bottom plate (55);
the upper end face of the upper cover sealing ring (52) is abutted against the hollow screw rod (51), and the upper cover body (5) is provided with a sealing face matched with the upper end face of the upper cover sealing ring (52).
2. An upper cover as claimed in claim 1, wherein: the spiral guide structure is a guide rib (58) fixedly connected to the inner wall of the valve hole (57), and the connecting structure is a guide groove (59) arranged on the hollow screw (51); the upper end of the hollow screw rod (51) is connected with a knob (6), and anti-skid patterns are arranged on the outer side of the knob (6).
3. An overcap as claimed in claim 2, wherein: the hollow screw rod (51) upper end is provided with circumference positioning groove, knob (6) are including inlayer positioning sleeve (61) and outer positioning sleeve (62) that link firmly, inlayer positioning sleeve (61) are provided with circumference positioning groove matched with location arch (63), upper cover body (5) are provided with outer positioning sleeve (62) assorted ring channel.
4. A cover as claimed in claim 3, wherein: the novel compression spring is characterized by further comprising a spring baffle plate (53), wherein the spring baffle plate (53) is arranged between the compression spring (54) and the upper cover sealing ring (52), the spring baffle plate (53) is of an annular structure, a positioning table is fixedly arranged in the middle of the inner side of the spring baffle plate (53), the upper end face of the positioning table is abutted against the upper cover sealing ring (52), and the lower end face of the positioning table is abutted against the compression spring (54).
5. The utility model provides a single two-way switching high pressure hand air pump, includes stack shell (1), piston (2) and linkage pipe (4), and piston (2) set up in stack shell (1) and cut apart stack shell (1) into upper plenum (11) and lower plenum (12), linkage pipe (4) lower extreme is connected and with piston (2) synchronous motion, its characterized in that: the upper cover comprises the upper cover according to any one of claims 1 to 4, wherein the outer side of the upper cover body (5) is in sealing connection with the upper end of the cylinder body (1), and the linkage pipe (4) penetrates through the upper cover sealing ring (52) and the hollow screw rod (51) and is in sealing connection with the upper cover sealing ring (52).
6. The single and double direction switching high pressure hand pump of claim 5, wherein: the piston (2) is provided with an air inlet air guide chamber (22) and an air outlet air guide chamber (21) which are isolated from each other, and the piston (2) is provided with a one-way air outlet structure which is communicated with the air inlet air guide chamber (22) and the upper air chamber (11) and the lower air chamber (12) and a one-way air inlet structure which is communicated with the air outlet air guide chamber (21) and the upper air chamber (11) and the lower air chamber (12);
the linkage pipe (4) comprises an outer pipe (41) and an inner pipe (42), wherein the lower end of the outer pipe (41) is communicated with the air inlet guide chamber (22), the lower end of the inner pipe (42) is communicated with the air outlet guide chamber (21), the inner pipe (42) is connected with an air outlet (71), and the outer pipe (41) is connected with an air inlet (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321375271.6U CN219654831U (en) | 2023-06-01 | 2023-06-01 | Upper cover and single-bidirectional switching high-pressure hand-pulled air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321375271.6U CN219654831U (en) | 2023-06-01 | 2023-06-01 | Upper cover and single-bidirectional switching high-pressure hand-pulled air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219654831U true CN219654831U (en) | 2023-09-08 |
Family
ID=87875960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321375271.6U Active CN219654831U (en) | 2023-06-01 | 2023-06-01 | Upper cover and single-bidirectional switching high-pressure hand-pulled air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219654831U (en) |
-
2023
- 2023-06-01 CN CN202321375271.6U patent/CN219654831U/en active Active
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