Knob air pump with high sealing performance

Abstract

The utility model aims to provide a knob air pump with high sealing performance, which comprises a shell and a pump body, the shell comprises a shell body and a screw cap, the shell body is used for being installed on an inflatable product, the shell body is provided with a shell cavity, the inner bottom wall of the shell cavity is provided with an air hole, the inner side wall of the air hole is provided with a sealing piece in a sliding mode, and when the screw cap is in screw joint with the shell body, the sealing piece is arranged in the shell cavity. The pump body comprises a pump shell, a fan, a first backing ring, a sealing lantern ring and a sealing ring, an air outlet channel is formed in one end of the pump shell, an air inlet channel is formed in the other end of the pump shell, an inner top ring is arranged on the inner side wall of the air inlet channel, the fan is arranged in the pump shell, and the first backing ring abuts against the end face of the fan and the inner top ring. The sealing lantern ring is arranged on the outer side wall of the draught fan, the outer side wall of the sealing lantern ring abuts against the inner side wall of the pump shell, the sealing ring is arranged on the outer side wall of the air outlet channel, and when the pump body is inserted into the shell cavity through one end of the air outlet channel, the sealing ring abuts against the inner side wall of the air hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air pump, in particular to a high sealing knob air pump. BACKGROUND

[0002] Air pump is a kind of mechanical device for compressing air and delivering it to other equipment or system.

[0003] The current air pump structure mainly relies on the rotation of fan to drive the directional flow of gas to generate wind pressure, so as to realize the inflation or deflation of inflatable boat and other inflatable products.

[0004] However, the existing air pump has the following deficiencies when inflating: under the action of fan, the side of fan close to the inflatable product forms high air pressure, and the side connected with the outside forms low air pressure. Due to poor air tightness between fan and pump shell, the air on the high air pressure side will leak along the gap between fan and pump shell, that is, the air flow forms backflow between fan and pump shell, resulting in poor efficiency of air pump when inflating. Therefore, in order to solve the above-mentioned deficiencies, the high sealing knob air pump of the present application is proposed. SUMMARY

[0005] The utility model aims at overcoming the deficiencies in the prior art, and provides a high sealing knob air pump which can avoid air backflow and improve inflation efficiency.

[0006] The utility model aims at overcoming the deficiencies in the prior art, and provides a high sealing knob air pump which can avoid air backflow and improve inflation efficiency.

[0007] A high sealing knob air pump, comprising:

[0008] A shell, the shell comprises a shell body and a screw cap, the shell body is used for mounting on the inflatable product, a shell cavity is formed on the shell body, an air hole for communicating with the inflatable product is formed on the inner bottom wall of the shell cavity, a sealing element is slidably arranged on the inner side wall of the air hole, and the screw cap is screwed with the shell body to seal the shell cavity.

[0009] A pump body, the pump body comprises a pump shell, a fan, a first gasket ring, a sealing sleeve ring and a sealing ring, an air outlet channel is formed on one end of the pump shell, an air inlet channel is formed on the other end of the pump shell, an inner top ring is arranged on the inner side wall of the air inlet channel, the fan is arranged in the pump shell, the first gasket ring abuts against the end surface of the fan and the inner top ring respectively, the sealing sleeve ring is arranged on the outer side wall of the fan, and the outer side wall of the sealing sleeve ring abuts against the inner side wall of the pump shell, and the sealing ring is arranged on the outer side wall of the air outlet channel, so that the sealing ring abuts against the inner side wall of the air hole when the pump body is inserted into the shell cavity through one end of the air outlet channel.

[0010] Optionally, an inner side wall of the air outlet channel is provided with a support frame, and the support frame is in abutment with the fan.

[0011] Optionally, a center of the support frame is provided with a clearance groove, and the clearance groove is used for avoiding the clearance groove.

[0012] Optionally, the pump shell comprises a bottom shell and a top shell, the top shell is in interlocking connection with the bottom shell, the air outlet channel is located on the bottom shell, and the air inlet channel is located on the top shell.

[0013] Optionally, an insertion slot is formed in the bottom shell, and a clamping block is arranged in the insertion slot, and the clamping block is used for clamping the shell.

[0014] Optionally, an outer side wall of the clamping block is provided with a protruding portion, an inner side wall of the shell cavity is provided with a clamping groove, and when the pump body is inserted into the shell cavity, the protruding portion is accommodated in the clamping groove.

[0015] Optionally, the clamping block is made of silica gel.

[0016] Optionally, an inner side wall of the air hole is provided with a hollow frame, the sealing member comprises a sealing frame, a sealing sheet and a sealing spring, the sealing frame is arranged in the hollow frame, the sealing sheet is arranged on a side of the sealing frame away from the hollow frame, and the sealing spring is in abutment with the sealing frame and the hollow frame, respectively, and the sealing spring is used for pushing the sealing frame, so that the sealing sheet seals the air hole.

[0017] Optionally, a blocking frame is further arranged on a side of the inner top ring away from the first gasket, and the blocking frame is used for pushing the sealing member.

[0018] Optionally, an inner side wall of the rotating cover is provided with a second gasket, and when the rotating cover is screwed with the shell, the second gasket is in abutment with the shell.

[0019] Compared with the prior art, the utility model has at least the following advantages:

[0020] The utility model discloses a high sealing knob air pump, including shell and pump body, the shell includes casing and screw cover, and the casing is used for installing on the inflating product, and the casing is set up the shell cavity, and the inner bottom wall of shell cavity is set up the air hole for communicating with the inflating product, and the inboard wall of air hole is set up the sealing piece, and the screw cover is with the casing is screwed when, to make screw cover seal shell cavity, and the pump body includes pump shell, fan, first gasket ring, sealing sleeve ring and sealing ring, and one end of pump shell is set up the air outlet channel, and the other end of pump shell is set up the air inlet channel, and the inboard wall of air inlet channel is provided with inner top ring, and the fan is arranged in the pump shell, and the first gasket ring is respectively with the end surface of fan and inner top ring abuts, and the sealing sleeve ring is set up on the outboard wall of fan, and the outboard wall of sealing sleeve ring and the inboard wall of pump shell abut, and the sealing ring is set up on the outboard wall of air outlet channel, and when the pump body is inserted in the shell cavity with the one end of air outlet channel, to make sealing ring and the inboard wall of air hole abut. Therefore, when the fan starts, the fan will be air pressure from the air inlet channel into the pump shell, and the gas can reliably flow into the inflating product from the air outlet channel through the air hole, and will not flow back to the air inlet channel from the gap between the fan and the pump shell, and will not flow back to the outside from the gap between the air outlet channel and the air hole, therefore, effectively avoid the gas backflow, improve the inflating efficiency of air pump. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawings in the embodiment briefly introduced, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limited range, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0022] Figure 1 It is the structure schematic diagram of the high sealing knob air pump of an embodiment of the utility model.

[0023] Figure 2 It is Figure 1 It is the cross section structure schematic diagram of the high sealing knob air pump shown.

[0024] Figure 3 It is the structure schematic diagram of the pump body of an embodiment of the utility model.

[0025] Explanation of reference signs:

[0026] 10, high sealing knob air pump;100, shell;110, shell body;111, shell cavity;112, air hole;113, clamping groove;120, screw cap;130, sealing element;140, hollow frame;131, sealing frame;132, sealing sheet;133, sealing spring;150, second gasket;160, convex strip;200, pump body;210, pump shell;211, bottom shell;2111, air outlet channel;2112, slot;212, top shell;2121, air inlet channel;213, clamping block;2131, protruding part;214, positioning groove;220, fan;230, first gasket;240, sealing sleeve ring;250, sealing ring;260, inner top ring;270, support frame;271, air avoidance slot;280, blocking frame;290, handle. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings.

[0028] As shown in Figure 1 and Figure 2 , a high sealing knob air pump 10, comprising a shell 100 and a pump body 200, the shell 100 comprises a shell body 110 and a screw cap 120, the shell body 110 is used for mounting on the inflating product, the shell body 110 is provided with a shell cavity 111, the inner bottom wall of the shell cavity 111 is provided with an air hole 112 for communication with the inflating product, the inner side wall of the air hole 112 is provided with a sealing element 130, the screw cap 120 is screwed with the shell body 110 to seal the shell cavity 111, the pump body 200 comprises a pump shell 210, a fan 220, a first gasket 230, a sealing sleeve ring 240 and a sealing ring 250, one end of the pump shell 210 is provided with an air outlet channel 2111, the other end of the pump shell 210 is provided with an air inlet channel 2121, the inner side wall of the air inlet channel 2121 is provided with an inner top ring 260, the fan 220 is arranged in the pump shell 210, the first gasket 230 abuts with the end face of the fan 220 and the inner top ring 260 respectively, the sealing sleeve ring 240 is arranged on the outer side wall of the fan 220, and the outer side wall of the sealing sleeve ring 240 abuts with the inner side wall of the pump shell 210, the sealing ring 250 is arranged on the outer side wall of the air outlet channel 2111, when the pump body 200 is inserted into the shell cavity 111 with one end of the air outlet channel 2111, the sealing ring 250 abuts with the inner side wall of the air hole 112.

[0029] It should be noted that the pump casing 210 has an air outlet channel 2111 at one end and an air inlet channel 2121 at the other end, with the air inlet channel 2121 and the air outlet channel 2111 connected to each other. A fan 220 is installed inside the pump casing 210. Under the blowing action of the fan 220, gas enters the pump casing 210 through the air inlet channel 2121 and then flows out through the air outlet channel 2111. Therefore, the side of the pump casing 210 closest to the air outlet channel 2111 is the high-pressure side. By installing a first gasket 230 between the end face of the fan 220 and the inner top ring 260 of the inner sidewall of the air inlet channel 2121, and by fitting a sealing sleeve 240 onto the outer sidewall of the fan 220, the gap between the fan 220 and the pump casing 210 is eliminated using the first gasket 230 and the sealing sleeve 240. Furthermore, a sealing ring 250 is fitted on the air outlet channel 2111. When the end of the pump body 200 near the air outlet channel 2111 is inserted into the shell cavity 111, the sealing ring 250 abuts against the inner wall of the air hole 112, eliminating the gap between the air outlet channel 2111 and the air hole 112. This prevents gas from being blown into the inflatable product along the air hole 112, and from flowing back out through the gap between the pump shell 210 and the outer shell 100. Thus, when the blower 220 is started, the blower 220 blows air pressure into the pump housing 210 through the air inlet channel 2121. The gas can reliably flow into the inflated product through the air outlet channel 2111 and the air hole 112. It will not flow back into the air inlet channel 2121 through the gap between the blower 220 and the pump housing 210, nor will it flow back to the outside through the gap between the air outlet channel 2111 and the air hole 112. Therefore, gas backflow is effectively avoided, and the inflation efficiency of the air pump is improved.

[0030] like Figure 2 As shown, in one embodiment, a support frame 270 is provided on the inner wall of the air outlet duct 2111, and the support frame 270 abuts against the fan 220.

[0031] In this way, by using the support frame 270 to support one end of the fan 220, the other end face of the fan 220 is reliably pressed against the first gasket 230, ensuring the airtightness between the fan 220 and the inner top ring 260.

[0032] like Figure 2 As shown, in one embodiment, the support frame 270 has a clearance groove 271 at its center, which is used to avoid the space inside the clearance groove 271.

[0033] It should be noted that, in order to prevent the support frame 270 from pushing the seal 130 and causing the air hole 112 to open accidentally, a clearance groove 271 is opened at the center of the support frame 270, so that the seal 130 is located in the clearance groove 271, that is, the seal 130 and the support frame 270 are in a non-contact state.

[0034] like Figure 3As shown, in an embodiment, the pump shell 210 comprises a bottom shell 211 and a top shell 212, the top shell 212 is buckled with the bottom shell 211, the air outlet channel 2111 is located on the bottom shell 211, and the air inlet channel 2121 is located on the top shell 212.

[0035] It should be noted that the pump shell 210 is formed by buckling the top shell 212 and the bottom shell 211, for example, the top shell 212 and the bottom shell 211 are fixed as a whole by ultrasonic welding. The pump shell 210 is arranged in the structure of the buckling of the top shell 212 and the bottom shell 211, which facilitates the installation of the fan 220, the first gasket ring 230, the sealing sleeve ring 240 and the like in the pump shell 210.

[0036] As shown, Figure 3 in an embodiment, the bottom shell 211 is provided with a slot 2112, and the slot 2112 is provided with a clamping block 213, and the clamping block 213 is used for clamping with the shell cavity 111.

[0037] It should be noted that when the pump body 200 is inserted into the shell cavity 111 near one end of the air outlet channel 2111, the gas is blown into the inflatable product through the air hole 112 after passing through the air outlet channel 2111 from the air inlet channel 2121. Due to the action of air pressure, in order to avoid the pump body 200 from sliding out of the shell cavity 111 stably, the above structure is provided, specifically, the clamping block 213 is installed in the slot 2112 on the bottom shell 211, and the inner side wall of the shell cavity 111 is clamped by the clamping block 213, so that the pump body 200 cannot be mistakenly slipped out of the shell 110. In an embodiment, the clamping block 213 is provided as two, and a gap is provided between the two clamping blocks 213, so that the stability of the pump body 200 kept in the shell 110 is improved.

[0038] As shown, Figure 1 and Figure 3 in an embodiment, the outer side wall of the clamping block 213 is provided with a protruding portion 2131, the inner side wall of the shell cavity 111 is provided with a clamping groove 113, and when the pump body 200 is inserted into the shell cavity 111, the protruding portion 2131 is accommodated in the clamping groove 113.

[0039] In this way, the protruding portion 2131 is clamped and limited by the clamping groove 113, which can avoid the pump body 200 from sliding out of the shell cavity 111.

[0040] In an embodiment, the clamping block 213 is made of soft rubber material. For example, the clamping block 213 can be made of silica gel, so that when the pump body 200 is inserted into the shell cavity 111, the clamping block 213 is deformed under stress, so that the pump body 200 can be smoothly inserted into the shell cavity 111.

[0041] As shown, Figure 2As shown, in an embodiment, the inner side wall of the air hole 112 is provided with a hollow frame 140, the sealing member 130 comprises a sealing frame 131, a sealing sheet 132 and a sealing spring 133, the sealing frame 131 is arranged in the hollow frame 140, the sealing sheet 132 is arranged on the side of the sealing frame 131 away from the hollow frame 140, and the sealing spring 133 abuts against the sealing frame 131 and the hollow frame 140 respectively, and the sealing spring 133 is used to push the sealing frame 131 so as to seal the air hole 112 by the sealing sheet 132.

[0042] Thus, under the elastic pushing force of the sealing spring 133, the sealing frame 131 stably drives the sealing sheet 132 to abut and seal the air hole 112 in the absence of external force. When the fan 220 is started, the high-pressure gas pushes away the sealing sheet 132 to flow through the air hole 112, and at this time, the sealing spring 133 is compressed under force. In an embodiment, the sealing sheet 132 is made of rubber.

[0043] As shown, Figure 1 in an embodiment, the inner top ring 260 is further provided with a blocking frame 280 on the side away from the first gasket ring 230, and the blocking frame 280 is used to push the sealing member 130.

[0044] It should be noted that when the pump body 200 is inserted into the shell cavity 111 near one end of the air inlet channel 2121, in order to enable the blocking frame 280 to push away the sealing member 130, thus, with the start of the fan 220, the gas can be stably extracted from the inflatable product, at this time, the air pump is in the air extraction state.

[0045] As shown, Figure 2 in an embodiment, the inner side wall of the screw cap 120 is provided with the second gasket ring 150, and when the screw cap 120 is screwed with the shell 110, the second gasket ring 150 abuts against the shell 110.

[0046] It should be noted that the second gasket ring 150 is used to eliminate the gap between the screw cap 120 and the shell 110, thus, the air tightness between the shell 110 and the screw cap 120 can be ensured.

[0047] As shown, Figures 1 to 3 in an embodiment, the outer side wall of the pump shell 210 is provided with a positioning groove 214, the inner side wall of the shell cavity 111 is provided with a protrusion 160, and when the pump body 200 is inserted into the shell cavity 111, the protrusion 160 is arranged in the positioning groove 214 in a sliding manner.

[0048] It should be noted that the positioning groove 214 extends from the top shell 212 to the bottom shell 211, thus, by the cooperation of the protrusion 160 and the positioning groove 214, the pump body 200 can be quickly and accurately inserted into the shell cavity 111.

[0049] Further, as shown, Figure 1As shown, in an embodiment, a lifting handle 290 is rotatably arranged on each end of the pump shell 210. In this way, the pump body 200 can be conveniently pulled out of the shell cavity 111 through the lifting handle 290.

[0050] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the application. In the present application, the installation / fixation / arrangement can be understood as including but not limited to locking and fixing by screws, welding, unless otherwise defined. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A high-sealing knob air pump, characterized by, The utility model relates to a kind of inflatable product air pump, including: Shell, the shell includes shell and screw cap, the shell is used to install on inflatable product, shell cavity is opened in the shell, air hole for being communicated with inflatable product is opened in the inner bottom wall of shell cavity, sealing element is slidably arranged on the inner side wall of air hole, when the screw cap is screwed with the shell, so that the screw cap seals shell cavity;And Pump body, the pump body includes pump shell, fan, first gasket, sealing sleeve ring and sealing ring, one end of the pump shell is provided with air outlet channel, the other end of the pump shell is provided with air inlet channel, the inner side wall of the air inlet channel is provided with inner top ring, the fan is arranged in the pump shell, the first gasket is respectively abutted with the end surface of fan and the inner top ring, the sealing sleeve ring is arranged on the outer side wall of the fan, and the outer side wall of the sealing sleeve ring is abutted with the inner side wall of the pump shell, the sealing ring is arranged on the outer side wall of the air outlet channel, when the pump body is inserted into the shell cavity with one end of the air outlet channel, so that the sealing ring is abutted with the inner side wall of the air hole.

2. The high-sealing knob air pump according to claim 1, wherein, The inner side wall of the air outlet channel is provided with a support frame, and the support frame is abutted with the fan.

3. The high-sealing knob air pump according to claim 2, wherein, The center of the support frame is provided with a clearance groove for avoiding the clearance groove.

4. The high-sealing knob air pump of claim 1, wherein, The pump shell includes a bottom shell and a top shell, the top shell is buckled with the bottom shell, the air outlet channel is located on the bottom shell, and the air inlet channel is located on the top shell.

5. The high-sealing knob air pump according to claim 4, wherein, The bottom shell is provided with a slot, and the slot is provided with a clamping block, and the clamping block is used for clamping with the shell.

6. The high-sealing knob air pump of claim 5, wherein, The outer side wall of the clamping block is provided with a protruding portion, the inner side wall of the shell cavity is provided with a clamping groove, and the pump body is inserted into the shell cavity, so that the protruding portion is accommodated in the clamping groove.

7. The high-sealing knob air pump according to claim 6, wherein, The clamping block is made of soft rubber material.

8. The high-sealing knob air pump of claim 1, wherein, The inner side wall of the air hole is provided with a hollow frame, the sealing element includes a sealing frame, a sealing sheet and a sealing spring, the sealing frame is arranged in the hollow frame, the sealing sheet is arranged on the side of the sealing frame away from the hollow frame, and the sealing spring is abutted with the sealing frame and the hollow frame, respectively, and the sealing spring is used for pushing the sealing frame, so that the sealing sheet seals the air hole.

9. The high-sealing knob air pump of claim 1, wherein, The inner top ring is further provided with a blocking frame away from the first gasket, and the blocking frame is used for pushing the sealing element.

10. The high-sealing knob air pump of claim 1, wherein, The inner side wall of the screw cap is provided with a second gasket, and when the screw cap is screwed with the shell, the second gasket is abutted with the shell.

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