Inflator body device with protective device piston

Abstract

The utility model relates to the technical field of inflators, and discloses an inflator body device with a protection device piston, the inflator body device comprises a base, an inflator body and an air storage tank, the inflator body and the air storage tank are both fixedly connected to the outer wall of the top of the base, the inflator body communicates with the air storage tank, the piston is arranged in the inflator body, and the piston is arranged in the inflator body. According to the utility model, the protective sleeve made of the wear-resistant material is sleeved on the peripheral surface of the piston, so that the direct friction between the piston and the inner wall of the inflator body is greatly reduced, the wear degree of the piston is effectively reduced, and the service life of the piston is prolonged; therefore, the overall sealing performance and the service life of the inflator are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of inflators, in particular to an inflator cylinder device with a piston protection device. BACKGROUND

[0002] The inflator is a common tool in daily life and is widely used for inflating bicycle tires, motorcycle tires and the like. In the use process of the existing inflator, the piston is frequently rubbed against the inside of the cylinder, which easily causes abrasion of the piston and further affects the sealing performance and service life of the inflator. Meanwhile, when the inflator is placed randomly after use, dust and sundries in the external environment are easily introduced into the inside of the cylinder, which not only pollutes the piston but also hinders the next use of the inflator and affects the inflating effect. Therefore, the inflator cylinder device with a piston protection device is provided to solve the above problems. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing an inflator cylinder device with a piston protection device to solve the problems of easy abrasion of the piston and easy introduction of dust and sundries into the cylinder in the background technology.

[0004] The inflator cylinder device with a piston protection device provided by the application adopts the following technical scheme:

[0005] The inflator cylinder device with a piston protection device comprises a base, an inflator cylinder and a gas storage tank, the inflator cylinder and the gas storage tank are fixedly connected to the top outer wall of the base, the inflator cylinder is connected to the gas storage tank, the inside of the inflator cylinder is provided with a piston, the piston is connected to a handle outside the inflator cylinder through a piston rod, the bottom of the base is provided with an air inlet valve, the outer wall of the gas storage tank is provided with an inflating pipe, the outer circumferential surface of the piston is provided with a protective sleeve, the protective sleeve is tightly attached to the inner wall of the base, a dust cover is detachably connected to the bottom of the base where the air inlet valve is located, and the inside of the dust cover is provided with a filter layer.

[0006] Preferably, the material of the protective sleeve is polytetrafluoroethylene, and the thickness of the protective sleeve is 2-5 mm.

[0007] Preferably, the edge of the piston is provided with an annular clamping groove, the inner wall of the protective sleeve is provided with an annular clamping block at the position corresponding to the annular clamping groove, and the annular clamping block is clamped in the annular clamping groove.

[0008] Preferably, the bottom outer wall of the base is fixedly connected with a nut ring, and the dust cover is threadedly connected to the inner wall of the nut ring.

[0009] Preferably, an inflating nozzle is mounted at the end of the inflating pipe away from the gas storage tank, and an air outlet valve is arranged between the inflating nozzle and the end of the inflating pipe.

[0010] Preferably, the filter layer is made of activated carbon fiber material.

[0011] Preferably, the outer wall of the piston rod is sleeved with a spring between the top end of the base and the bottom of the handle.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] 1. By sleeving the protective sleeve made of wear-resistant material on the outer periphery of the piston, the direct friction between the piston and the inner wall of the air pump cylinder is greatly reduced, the wear degree of the piston is effectively reduced, the service life of the piston is prolonged, and the overall sealing performance and service life of the air pump are improved;

[0014] 2. The dust cover detachably connected to the periphery of the air inlet valve and the filter layer arranged inside the dust cover can effectively block the dust and sundries from the outside into the inside of the cylinder when the air pump is not used, and filter the air entering during the inflation process, ensuring the cleanliness of the inside of the cylinder, which is conducive to the stable work of the air pump and improves the inflation effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall schematic view of the application embodiment;

[0016] Figure 2 is the bottom perspective view of the application embodiment;

[0017] Figure 3 is the partial sectional view of the application embodiment;

[0018] Figure 4 is the partial structure sectional view of the application embodiment.

[0019] Explanation of Reference Signs: 1, base; 2, air pump cylinder; 3, air tank; 4, inflation pipe; 5, air outlet valve; 6, inflation nozzle; 7, piston rod; 8, piston; 9, handle; 10, protective sleeve; 11, annular clamping block; 12, annular clamping groove; 13, nut ring; 14, dust cover; 15, filter layer; 16, air inlet valve; 17, spring. DETAILED DESCRIPTION

[0020] The following will be described in detail in combination with the accompanying drawings Figures 1-4 The application will be further described in detail.

[0021] The application embodiment discloses an air pump cylinder device with a piston having a protection device. Referring to Figures 1-4The utility model provides a pump cylinder device with protective device piston, including base 1, pump cylinder 2 and gas holder 3, pump cylinder 2 and gas holder 3 are fixedly connected on the top outer wall of base 1, pump cylinder 2 is linked with gas holder 3, the inside of pump cylinder 2 is equipped with piston 8, piston 8 is connected with handle 9 located at the outside of pump cylinder 2 through piston rod 7, the bottom of base 1 is equipped with air inlet valve 16, the outer wall of gas holder 3 is equipped with inflation tube 4, the outer circumferential surface of piston 8 is equipped with protective sleeve 10, and protective sleeve 10 is closely attached with the inner wall of base 1, and dust cover 14 is detachably connected at the bottom of base 1 where air inlet valve 16 is located, and dust cover 14 is equipped with filter layer 15 in the inside.

[0022] The material of the protective sleeve 10 is polytetrafluoroethylene, and the thickness of the protective sleeve 10 is 2-5 mm. The polytetrafluoroethylene has a very low friction coefficient, which can effectively reduce the friction between the piston and the inner wall of the cylinder. In addition, the polytetrafluoroethylene has high chemical stability and is not easy to react with the gas in the pump. Moreover, the polytetrafluoroethylene has good wear resistance, which can prolong the service life of the piston 8.

[0023] The edge of the piston 8 is provided with an annular clamping groove 12, and the inner wall of the protective sleeve 10 is provided with an annular clamping block 11 corresponding to the position of the annular clamping groove 12. The annular clamping block 11 is clamped in the annular clamping groove 12, so that the protective sleeve 10 is firmly connected with the piston 8 and is not easy to fall off.

[0024] The bottom outer wall of the base 1 is fixedly connected with a nut ring 13, and the dust cover 14 is threadedly connected to the inner wall of the nut ring 13. When it is necessary to replace the dust cover 14, the dust cover 14 can be easily unscrewed, and then the dust cover 14 is tightened. This prevents dust and debris from entering the gas holder 3 through the air inlet valve 16.

[0025] The inflation tube 4 is provided with an inflation nozzle 6 at the end away from the gas holder 3. An air outlet valve 5 is arranged between the inflation nozzle 6 and the end of the inflation tube 4. The air outlet valve 5 is used to discharge the gas in the gas holder 3 through the inflation nozzle 6 into the object to be inflated.

[0026] The filter layer 15 is made of activated carbon fiber material. The activated carbon fiber has good adsorption performance, which can not only effectively filter the dust and impurities in the air, but also adsorb odors. This ensures that the gas entering the pump is relatively clean and avoids pollution to the piston 8 and the inside of the cylinder.

[0027] The outer wall of the piston rod 7 is sleeved with a spring 17. The spring 17 is located between the top end of the base 1 and the bottom of the handle 9. The elastic force of the spring 17 can assist the handle 9 to drive the piston rod 7 to rise.

[0028] The implementation principle of the cylinder device of the inflator with the protection device piston is as follows: first, the annular clamping block 11 on the inner wall of the protection sleeve 10 is aligned with the annular clamping groove 12 at the edge of the piston 8, then the protection sleeve 10 is slowly sleeved on the outer peripheral surface of the piston 8, and the annular clamping block 11 is ensured to be completely clamped into the annular clamping groove 12, so that the piston 8 is tightly connected with the protection sleeve 10.

[0029] When the inflator needs to be used, the handle 9 is pulled up and down to drive the piston 8 to reciprocate in the base 1.

[0030] After use, the dust cover 14 can prevent dust and sundries from entering the inside of the cylinder, and since the protection sleeve 10 is sleeved on the outer periphery of the piston 8, the protection sleeve 10 can continue to protect the piston 8 from possible friction damage in the placing process, thereby prolonging the service life of the piston 8 and the entire inflator cylinder device.

[0031] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0032] Secondly: the utility model discloses the embodiment of the drawings only relates to the structure involved in the embodiment of the present disclosure, and other structures can refer to the usual design, and under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0033] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0034] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, so: any equivalent change made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A pump cylinder device with a protective device piston, comprising a base (1), a pump cylinder (2) and a gas storage tank (3), the pump cylinder (2) and the gas storage tank (3) are fixedly connected to the top outer wall of the base (1), the pump cylinder (2) is connected with the gas storage tank (3), the inside of the pump cylinder (2) is provided with a piston (8), the piston (8) is connected with a handle (9) outside the pump cylinder (2) through a piston rod (7), the bottom of the base (1) is provided with an air inlet valve (16), the outer wall of the gas storage tank (3) is provided with an inflation tube (4), characterized in that: The outer circumferential surface of the piston (8) is sleeved with a protective sleeve (10), and the protective sleeve (10) is tightly attached to the inner wall of the base (1); the base (1) is detachably connected with a dust cover (14) at the bottom where the air inlet valve (16) is located; and the dust cover (14) is internally provided with a filter layer (15).

2. A pump cylinder device with a protection device piston according to claim 1, characterized in that The protective sleeve (10) is made of polytetrafluoroethylene, and has a thickness of 2-5 mm.

3. A pump cylinder device with a protective device piston according to claim 1, characterized in that: The edge of the piston (8) is provided with an annular clamping groove (12), and the inner wall of the protective sleeve (10) is provided with an annular clamping block (11) corresponding to the position of the annular clamping groove (12); and the annular clamping block (11) is clamped in the annular clamping groove (12).

4. A pump cylinder device with a protection device piston according to claim 1, characterized in that: The outer wall of the bottom of the base (1) is fixedly connected with a nut ring (13), and the dust cover (14) is threadedly connected to the inner wall of the nut ring (13).

5. A pump cylinder device with a protective device piston according to claim 1, characterized in that: The end of the inflation pipe (4) away from the gas storage tank (3) is provided with an inflation nozzle (6), and the inflation nozzle (6) and the end of the inflation pipe (4) are provided with an air outlet valve (5).

6. A pump cylinder device with a protective device piston according to claim 1, characterized in that: The filter layer (15) is made of activated carbon fiber material.

7. A pump cylinder device with a protective device piston according to claim 1, characterized in that: The outer wall of the piston rod (7) is sleeved with a spring (17), and the spring (17) is located between the top end of the base (1) and the bottom of the handle (9).

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