Portable inflator

Abstract

The utility model provides a portable inflator, which relates to the technical field of inflators and comprises an inflator structure, and an extension structure is arranged at the bottom of the inflator structure. The extension structure comprises a fixing plate, sliding grooves are formed in the two ends of the exterior of the fixing plate, extension plates are slidably installed in the two sliding grooves, and a plurality of clamping grooves which are evenly distributed are formed in the outer walls of the extension plates. During use, a worker pulls the two pulling plates according to the size of a vehicle frame, the pulling plates drive the clamping blocks to move through the connecting rods, the clamping blocks leave the clamping grooves, the springs are compressed, then the worker pulls the two moving plates, the moving plates drive the extension plates to leave the sliding grooves, and when the distance between the two fixing structures is the needed distance, the two moving plates are separated from the sliding grooves. During use, a worker can loosen a pulling plate, a clamping block enters a clamping groove under the elastic force action of a spring, at the moment, an extension plate is fixed, the distance between the two fixing structures can be adjusted according to the size of a frame, and the use range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, in particular to a portable air pump. Background Art

[0002] Currently, existing air pumps mainly include a cylinder, a piston, a piston rod, and an air outlet pipe. The piston rod is provided inside the air pump, and a piston is provided at the lower end of the piston rod. The piston rod drives the piston to move up and down to pressurize air into the tire. In addition, the user needs to push and pull the piston rod with both hands to inflate the tire, and the user needs to bend over repeatedly, which consumes physical energy and increases the labor intensity of the inflating. The air pump is often used to inflate bicycle tires.

[0003] In the prior art, there is a portable air pump, such as that disclosed in Chinese patent CN 213270183 U, which includes a cylinder, an air outlet pipe, a piston, and an air pump rod, wherein the air outlet pipe is correspondingly provided at the bottom of the cylinder, the piston and the air pump rod are both provided in the cylinder, and one end of the main shaft of the piston is hinged to one end of the air pump rod, and the other end of the air pump rod extends out of the cylinder and is connected to a linkage mechanism; it is characterized in that it also includes a fixed clamping mechanism and a linkage mechanism, and the cylinder and the linkage mechanism are symmetrically mounted on the fixed clamping mechanism; it solves the problem that the cylinder of the existing air pump is smooth and cannot be tied, which makes it inconvenient to carry when riding a bicycle outdoors, is easy to slip, occupies storage bag space, and causes the air pump to be broken. The utility model is easy to carry and easy to fix, but the patent still has the following problems.

[0004] In the above patent, although a fixed clamping mechanism is provided to facilitate the fixation of the device on the frame and prevent the cylinder from falling from the frame, the distance between the two fixing blocks is fixed. For some frames with special shapes or with pipes that are too large or too small in diameter, it may not be possible to fix them well, thereby reducing the scope of use. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the fixing clamping mechanism may not be able to fix some frames with special shapes or with pipes that are too large or too small, and proposes a portable air pump.

[0006] In order to achieve the above-mentioned object, the present utility model adopts the following technical solution: a portable air pump, comprising an air pump structure, wherein an extension structure is provided at the bottom of the air pump structure;

[0007] The extension structure includes a fixed plate, both ends of the fixed plate are provided with sliding grooves, and the extension plates are slidably installed inside the two sliding grooves, the outer wall of the extension plate is provided with a plurality of evenly distributed card grooves, the inner walls of the two sliding grooves are provided with limiting grooves, the inner walls of the limiting grooves are fixedly installed with a spring, one end of the spring is fixedly installed with a card block, the end of the card block close to the spring is fixedly installed with a connecting rod, one end of the connecting rod passes through the fixed plate and is fixedly installed with a pull plate, and the two extension plates are fixedly installed on the opposite sides of the two extension plates;

[0008] The opposite sides of the two movable plates are both provided with fixed structures.

[0009] Preferably, sliders are fixedly mounted on the outer walls of the two extension plates, connecting grooves are provided on the inner walls of the two slide grooves, and the two sliders are slidably connected to the two connecting grooves respectively.

[0010] Preferably, the tops of the two extension plates are each provided with a plurality of evenly distributed positioning grooves.

[0011] Preferably, the fixed structure includes a support plate, the outer walls of the two support plates are respectively fixedly connected to the outer walls of the two movable plates, a threaded hole is opened through the top of the support plate, a threaded rod is threadedly connected inside the threaded hole, a stop block is fixedly installed on the top of the threaded rod, and a handle is fixedly installed on the bottom of the threaded rod.

[0012] Preferably, the air pump structure includes a cylinder, the top of the fixed plate is fixedly connected to the outer wall of the cylinder, a piston is slidably installed inside the cylinder, an air pumping rod is fixedly installed at one end of the piston, one end of the air pumping rod passes through the cylinder and is fixedly installed with a pull rod, and an air outlet pipe is provided at one end of the cylinder.

[0013] Preferably, the outer walls of the two extension plates are respectively fitted with the inner walls of the two chute grooves.

[0014] Preferably, the outer wall of the card block fits with the inner wall of the card slot.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. In the utility model, when in use, the staff pulls the two pulling plates according to the size of the frame. The pulling plates drive the card block to move through the connecting rod, the card block leaves the card slot, the spring is compressed, and then the staff pulls the two movable plates, and the movable plates drive the extension plate to leave the slide slot. When the distance between the two fixed structures is the required distance, the staff can release the pulling plates, and the card block enters the card slot under the elastic force of the spring. At this time, the extension plate is fixed. In this way, the distance between the two fixed structures can be adjusted according to the size of the frame, thereby improving the scope of use.

[0017] 2. In the present invention, when the extension plate moves, it drives the slider to move along the connecting groove. The slider can prevent the extension plate from completely leaving the slide groove. When the extension plate is pulled out, when the positioning groove moves to one end of the fixed plate, the card slot moves to the side of the card block, which facilitates the card block to enter the card slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides an overall three-dimensional diagram of a portable air pump;

[0019] Figure 2 This is a cross-sectional view of a fixing plate of a portable air pump proposed in the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the fixed structure of a portable air pump proposed in the utility model;

[0021] Figure 4 The utility model provides a cross-sectional view of a cylinder of a portable air pump.

[0022] Legend: 1. Air pump structure; 101. Cylinder; 102. Piston; 103. Exhaust pipe; 104. Inflating rod; 105. Pull rod; 2. Extension structure; 201. Fixed plate; 202. Slide groove; 203. Extension plate; 204. Movable plate; 205. Slot; 206. Limiting groove; 207. Spring; 208. Block; 209. Connecting rod; 210. Pull plate; 211. Positioning groove; 212. Connecting groove; 213. Slider; 3. Fixed structure; 301. Support plate; 302. Threaded hole; 303. Threaded rod; 304. Handle; 305. Stop block. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1, as Figures 1-4 As shown, the utility model provides a portable air pump, comprising an air pump structure 1, wherein an extension structure 2 is provided at the bottom of the air pump structure 1;

[0026] The extension structure 2 includes a fixed plate 201, with sliding grooves 202 provided at both ends of the fixed plate 201, and an extension plate 203 is slidably installed inside the two sliding grooves 202. The outer wall of the extension plate 203 is provided with a plurality of evenly distributed card grooves 205, and the inner walls of the two sliding grooves 202 are provided with limiting grooves 206. The inner wall of the limiting groove 206 is fixedly installed with a spring 207, and a clamping block 208 is fixedly installed at one end of the spring 207. The end of the clamping block 208 close to the spring 207 is fixedly installed with a connecting rod 209, and one end of the connecting rod 209 passes through the fixed plate 201 and is fixedly installed with a pulling plate 210. The two extension plates 203 are fixedly installed with a movable plate 204 on the opposite sides of the two extension plates;

[0027] A fixed structure 3 is provided on opposite sides of the two movable plates 204 .

[0028] The effect achieved by the entire embodiment 1 is that when in use, the staff pulls the two pulling plates 210 according to the size of the frame, and the pulling plates 210 drive the block 208 to move through the connecting rod 209, and the block 208 leaves the slot 205, and the spring 207 is compressed. Then the staff pulls the two movable plates 204, and the movable plates 204 drive the extension plate 203 to leave the slide groove 202. When the distance between the two fixed structures 3 is the required distance, the staff can release the pulling plates 210, and the block 208 enters the slot 205 under the elastic force of the spring 207. At this time, the extension plate 203 is fixed. In this way, the distance between the two fixed structures 3 can be adjusted according to the size of the frame, thereby improving the scope of use.

[0029] Example 2, as Figures 1-4 As shown, further, sliders 213 are fixedly installed on the outer walls of the two extension plates 203, and connecting grooves 212 are opened on the inner walls of the two slide grooves 202. The two sliders 213 are slidably connected to the two connecting grooves 212 respectively.

[0030] Furthermore, a plurality of evenly distributed positioning grooves 211 are formed on the top of the two extension plates 203 .

[0031] Furthermore, the fixed structure 3 includes a support plate 301, the outer walls of the two support plates 301 are fixedly connected to the outer walls of the two movable plates 204 respectively, a threaded hole 302 is opened through the top of the support plate 301, a threaded rod 303 is threadedly connected inside the threaded hole 302, a stop block 305 is fixedly installed on the top of the threaded rod 303, and a handle 304 is fixedly installed on the bottom of the threaded rod 303.

[0032] Furthermore, the air pump structure 1 includes a cylinder 101, the top of the fixed plate 201 is fixedly connected to the outer wall of the cylinder 101, a piston 102 is slidably installed inside the cylinder 101, an air pumping rod 104 is fixedly installed at one end of the piston 102, one end of the air pumping rod 104 passes through the cylinder 101 and is fixedly installed with a pull rod 105, and an air outlet pipe 103 is provided at one end of the cylinder 101.

[0033] Furthermore, the outer walls of the two extension plates 203 are respectively fitted with the inner walls of the two slide grooves 202 to prevent the extension plates 203 from shaking back and forth.

[0034] Furthermore, the outer wall of the clamping block 208 fits with the inner wall of the clamping slot 205 . When the clamping block 208 enters the clamping slot 205 , the extension plate 203 can be fixed.

[0035] The effect achieved by the entire embodiment 2 is that when the extension plate 203 moves, it drives the slider 213 to move along the connecting groove 212. The slider 213 can prevent the extension plate 203 from completely leaving the slide groove 202, and when the extension plate 203 is pulled out, when the positioning groove 211 moves to one end of the fixed plate 201, the card slot 205 moves to the side of the card block 208, which facilitates the card block 208 to enter the card slot 205.

[0036] Working principle: When in use, the staff pulls the two pulling plates 210 according to the size of the frame. The pulling plates 210 drive the block 208 to move through the connecting rod 209. The block 208 leaves the slot 205 and the spring 207 is compressed. Then the staff pulls the two movable plates 204. The movable plates 204 drive the extension plate 203 to leave the slide 202. When the distance between the two fixed structures 3 is the required distance, the staff can release the pulling plates 210. The block 208 enters the slot 205 under the elastic force of the spring 207. At this time, the extension plate 203 is fixed. In this way, the distance between the two fixed structures 3 can be adjusted according to the size of the frame, thereby improving the scope of use. When the extension plate 203 moves, it drives the slider 213 to move along the connecting groove 212. The slider 213 can prevent the extension plate 203 from completely leaving the slide 202. When the extension plate 203 is pulled out, when the positioning groove 211 moves to one end of the fixed plate 201, the slot 205 moves to the side of the block 208, making it easier for the block 208 to enter the slot 205. When clamping, the staff rotates the handle 304, which drives the threaded rod 303 to rotate. The threaded rod 303 rises along the threaded hole 302 until the block 305 contacts the frame and is tightly fixed. When inflating, the staff connects the air nozzle of the outlet pipe 103 to the tire air nozzle, and then pulls or pushes the pull rod 105. The pull rod 105 drives the pumping rod 104 to move, and then carries the piston 102 to repeatedly push and pull in the cylinder 101, thereby achieving the operation of the pumping rod 104.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A portable air pump, comprising an air pump structure (1), characterized in that: An extension structure (2) is provided at the bottom of the air pump structure (1); The extension structure (2) includes a fixed plate (201), both ends of the fixed plate (201) are provided with a slide groove (202), and an extension plate (203) is slidably installed inside the two slide grooves (202), and the outer wall of the extension plate (203) is provided with a plurality of evenly distributed card grooves (205), and the inner walls of the two slide grooves (202) are provided with a limit groove (206), and the inner wall of the limit groove (206) is fixedly installed with a spring (207), and one end of the spring (207) is fixedly installed with a card block (208), and the end of the card block (208) close to the spring (207) is fixedly installed with a connecting rod (209), and one end of the connecting rod (209) passes through the fixed plate (201) and is fixedly installed with a pull plate (210), and the two extension plates (203) are fixedly installed with a movable plate (204) on the opposite sides. A fixed structure (3) is provided on opposite sides of the two movable plates (204).

2. A portable air pump according to claim 1, characterized in that: The outer walls of the two extension plates (203) are fixedly mounted with sliders (213), the inner walls of the two slide grooves (202) are provided with connecting grooves (212), and the two sliders (213) are respectively slidably connected to the two connecting grooves (212).

3. The portable air pump according to claim 1, characterized in that: The tops of the two extension plates (203) are each provided with a plurality of evenly distributed positioning grooves (211).

4. The portable air pump according to claim 1, characterized in that: The fixed structure (3) comprises a support plate (301), the outer walls of the two support plates (301) are fixedly connected to the outer walls of the two movable plates (204), a threaded hole (302) is provided through the top of the support plate (301), a threaded rod (303) is threadedly connected inside the threaded hole (302), a stop block (305) is fixedly installed on the top of the threaded rod (303), and a handle (304) is fixedly installed on the bottom of the threaded rod (303).

5. The portable air pump according to claim 1, characterized in that: The air pump structure (1) includes a cylinder (101), the top of the fixed plate (201) is fixedly connected to the outer wall of the cylinder (101), a piston (102) is slidably installed inside the cylinder (101), an air pumping rod (104) is fixedly installed at one end of the piston (102), one end of the air pumping rod (104) passes through the cylinder (101) and is fixedly installed with a pull rod (105), and an air outlet pipe (103) is provided at one end of the cylinder (101).

6. The portable air pump according to claim 1, characterized in that: The outer walls of the two extension plates (203) are respectively fitted with the inner walls of the two chute (202).

7. The portable air pump according to claim 1, characterized in that: The outer wall of the clamping block (208) fits in contact with the inner wall of the clamping slot (205).

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