TWI745019B

TWI745019B - Pump micro air escape valve

Info

Publication number: TWI745019B
Application number: TW109127226A
Authority: TW
Inventors: 吳樹木
Original assignee: 吳樹木
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-11-01
Also published as: TW202206731A

Abstract

A pump micro air escape valve includes a body and a valve body. The body is provided with an internal space and a vent hole. One end of the vent hole is connected to the internal space, and the other end is connected to an outer periphery of the body. One end of the vent hole adjacent to the internal space to another end opposite to the internal space forms a first length. The valve body is inserted in the vent hole so as to move between a first position and a second position. The valve body is provided with a first airtight part and a second airtight part along its radial outer periphery. The first airtight part and the second airtight part can contact or separate from the vent hole respectively. The distance between the first airtight part and the second airtight part is formed a second length. The first length is smaller than the second length.

Description

打氣筒之微量洩氣閥The micro-vent valve of the pump

本發明主要係揭示一種洩氣閥，尤指打氣筒之微量洩氣閥。The present invention mainly discloses a kind of vent valve, especially the trace vent valve of an inflator.

請參閱我國專利第M566758號之「卡榫式打氣筒」專利案，其為一種卡榫式打氣筒，其包括一握持座、一打氣管組、一接頭組件與一氣壓錶，該握持座具有一中空殼體，該打氣管組裝設於該殼體之一進氣端處，該接頭組件裝設於該殼體之一排氣口處，該氣壓錶裝設於該握持座之一量測部中。該握持座之殼體與該打氣管組之一組接件之間以至少一卡扣塊與至少一卡扣槽相互卡合定位，並以至少一定位塊貫穿該殼體與組接件。Please refer to my country Patent No. M566758 on the "click-type pump" patent, which is a click-type pump, which includes a holding seat, a pump set, a joint assembly and a barometer. The seat has a hollow shell, the air pump is assembled at an inlet end of the shell, the joint assembly is installed at an exhaust port of the shell, and the barometer is installed on the holding seat One of the measurement department. At least one buckle block and at least one buckle groove are mutually engaged and positioned between the housing of the holding seat and an assembly of the air pump set, and at least one positioning block penetrates the housing and the assembly .

然而，上述打氣筒壓力過高時需要按壓洩壓組洩氣，只要按壓洩壓組就會持續洩氣，使用者需要控制按壓時間才能調整洩氣量，但一般使用者無法在洩壓組洩氣的瞬間隨即放開洩壓組，無法達到氣壓微調的功能。However, when the pressure of the above-mentioned pump is too high, it is necessary to press the pressure relief group to deflate. As long as the pressure relief group is pressed, the pressure will continue to be deflated. The user needs to control the pressing time to adjust the amount of deflation. However, ordinary users cannot immediately deflate the pressure relief group. If the pressure relief group is released, the function of fine adjustment of air pressure cannot be achieved.

有鑑於上述習知結構之缺失，本發明人乃設計出一種打氣筒之微量洩氣閥，其係可克服上述習知結構之所有缺點。In view of the deficiencies of the above-mentioned conventional structure, the present inventor has designed a micro-vent valve for an inflator, which can overcome all the shortcomings of the above-mentioned conventional structure.

本發明打氣筒之微量洩氣閥其主要目的在於，提供一種包括有一個本體及一個閥體的洩氣閥，該本體設置有一個內部空間及一個洩氣孔，該洩氣孔的一端連接該內部空間且另一端連通該本體的外周緣，該洩氣孔由鄰近該內部空間的一端至相反於該內部空間的一端之間的距離形成一個第一長度，該閥體能夠在第一位置與第二位置之間移動地插設於該洩氣孔，該閥體沿其徑向的外周緣設置有一個第一氣密部及一個第二氣密部，該第一氣密部與該第二氣密部能夠分別接觸或脫離該洩氣孔，該第一氣密部與該第二氣密部之間的距離形成一個第二長度，該第一長度小於該第二長度，該洩氣閥透過上述結構能夠提供微量洩氣的功能。The main purpose of the micro vent valve of the pump of the present invention is to provide a vent valve including a body and a valve body, the body is provided with an internal space and a vent hole, one end of the vent hole is connected to the internal space and the other One end communicates with the outer periphery of the body, the bleed hole forms a first length from an end adjacent to the internal space to an end opposite to the internal space, and the valve body can be positioned between the first position and the second position Movably inserted in the bleed hole, the valve body is provided with a first airtight part and a second airtight part along its radial outer periphery, the first airtight part and the second airtight part can be separated When contacting or detaching from the vent hole, the distance between the first airtight portion and the second airtight portion forms a second length, the first length is smaller than the second length, and the bleed valve can provide a small amount of air leakage through the above structure Function.

該閥體在該第一位置時，該第一氣密部接觸並封閉該洩氣孔，該第二氣密部脫離該洩氣孔，該閥體在該第二位置時，該第二氣密部接觸並封閉該洩氣孔，該第一氣密部脫離該洩氣孔，該閥體在該第一位置與該第二位置之間時，該第一氣密部與該第二氣密部能夠同時脫離該洩氣孔。When the valve body is in the first position, the first airtight part contacts and closes the vent hole, the second airtight part separates from the vent hole, and when the valve body is in the second position, the second airtight part Contacts and closes the vent hole, the first airtight part is separated from the vent hole, and the valve body is between the first position and the second position, the first airtight part and the second airtight part can be simultaneously Get out of the vent hole.

該閥體設置有一個第一止擋部及一個第二止擋部，該第一止擋部設置於該第一氣密部相反於該第二氣密部的一側，該第二止擋部設置於該第二氣密部相反於該第一氣密部的一側，該閥體在該第一位置時，該第一止擋部抵靠於該洩氣孔鄰近該內部空間一端的端面，該閥體在該第二位置時，該第二止擋部抵靠於該洩氣孔鄰近該本體外周緣一端的端面。The valve body is provided with a first stop part and a second stop part, the first stop part is arranged on the side of the first airtight part opposite to the second airtight part, the second stop Part is arranged on the side of the second airtight part opposite to the first airtight part, and when the valve body is in the first position, the first stop part abuts against the end surface of the vent hole adjacent to one end of the internal space When the valve body is in the second position, the second stop portion abuts against the end surface of the vent hole adjacent to one end of the outer periphery of the body.

該洩氣孔的徑向寬度形成一個第一寬度，第一止擋部的徑向寬度形成一個第二寬度，該第二止擋部的徑向寬度形成一個第三寬度，該第一寬度小於該第二寬度與該第三寬度。The radial width of the vent hole forms a first width, the radial width of the first stop part forms a second width, the radial width of the second stop part forms a third width, and the first width is smaller than the The second width and the third width.

該閥體包括有一個滑塊及一個壓鈕，第一止擋部、該第一氣密部與該第二氣密部設置於該滑塊的外周緣，該滑塊的一端設置於該內部空間內且另一端連接於該壓鈕，該第二止擋部設置於該壓鈕鄰近該滑塊的一側，該閥體在該第一位置時，該壓鈕相反於該滑塊的一端設置於該本體外。The valve body includes a sliding block and a pressing button. A first stop, the first airtight part and the second airtight part are arranged on the outer periphery of the sliding block, and one end of the sliding block is arranged inside the sliding block. In the space and the other end is connected to the push button, the second stop portion is arranged on one side of the push button adjacent to the sliding block. When the valve body is in the first position, the push button is opposite to one end of the sliding block Set outside the body.

該閥體包括有一個彈性件，該彈性件設置於該內部空間內，該彈性件的一端抵靠於該滑塊且另一端抵靠於該內部空間的底面，該彈性件能夠頂推該閥體往該第一位置的方向移動。The valve body includes an elastic member disposed in the inner space, one end of the elastic member abuts against the slider and the other end abuts against the bottom surface of the inner space, the elastic member can push the valve The body moves in the direction of the first position.

該本體包括有一個閥座及一個端蓋，該端蓋固定連接於該閥座的一端，該內部空間由該閥座與該端蓋組合形成，該洩氣孔設置於該端蓋。The body includes a valve seat and an end cover, the end cover is fixedly connected to one end of the valve seat, the internal space is formed by the combination of the valve seat and the end cover, and the vent hole is arranged on the end cover.

其他目的、優點和本發明之新穎性將從以下詳細的描述與相關的附圖更加明顯。Other purposes, advantages, and novelty of the present invention will be more apparent from the following detailed description and related drawings.

有關本發明所採用之技術、手段及其功效，茲舉一較佳實施例並配合圖式詳述如後，此僅供說明之用，在專利申請上並不受此種結構之限制。Regarding the technology, means and effects of the present invention, a preferred embodiment is given in conjunction with the detailed descriptions below. This is for illustrative purposes only, and is not limited by this structure in the patent application.

參照圖1至圖5所示，為本發明打氣筒之微量洩氣閥之立體外觀圖、立體分解圖及剖面結構圖。本發明洩氣閥10包括有一個本體20及一個閥體30；其中：1 to 5 show the three-dimensional appearance view, the three-dimensional exploded view and the cross-sectional structure view of the micro relief valve of the pump of the present invention. The relief valve 10 of the present invention includes a body 20 and a valve body 30; among them:

該本體20設置有一個內部空間21及一個洩氣孔22，該洩氣孔22的一端連接該內部空間21且另一端連通該本體20的外周緣，該洩氣孔22由鄰近該內部空間21的一端至相反於該內部空間21的一端之間的距離形成一個第一長度L1。The body 20 is provided with an internal space 21 and a vent hole 22. One end of the vent hole 22 is connected to the internal space 21 and the other end is connected to the outer periphery of the body 20. The vent hole 22 extends from one end adjacent to the internal space 21 to On the contrary, the distance between the ends of the inner space 21 forms a first length L1.

該閥體30能夠在第一位置與第二位置之間移動地插設於該洩氣孔22，該閥體30沿其徑向的外周緣設置有一個第一氣密部31及一個第二氣密部32，該第一氣密部31與該第二氣密部32能夠分別接觸或脫離該洩氣孔22，該第一氣密部31與該第二氣密部32之間的距離形成一個第二長度L2，該第一長度L1小於該第二長度L2。The valve body 30 is inserted in the vent hole 22 so as to be movable between a first position and a second position. The valve body 30 is provided with a first airtight portion 31 and a second airtight portion along its radial outer periphery. The airtight portion 32, the first airtight portion 31 and the second airtight portion 32 can respectively contact or detach from the vent hole 22, and the distance between the first airtight portion 31 and the second airtight portion 32 forms a The second length L2, the first length L1 is less than the second length L2.

該閥體30在該第一位置時，該第一氣密部31接觸並封閉該洩氣孔22，該第二氣密部32脫離該洩氣孔22，該閥體30在該第二位置時，該第二氣密部32接觸並封閉該洩氣孔22，該第一氣密部31脫離該洩氣孔22，該閥體30在該第一位置與該第二位置之間時，該第一氣密部31與該第二氣密部32能夠同時脫離該洩氣孔22。When the valve body 30 is in the first position, the first airtight portion 31 contacts and closes the vent hole 22, and the second airtight portion 32 separates from the vent hole 22. When the valve body 30 is in the second position, The second airtight portion 32 contacts and closes the vent hole 22, the first airtight portion 31 separates from the vent hole 22, when the valve body 30 is between the first position and the second position, the first gas The sealing part 31 and the second air sealing part 32 can escape from the vent hole 22 at the same time.

該閥體30設置有一個第一止擋部33及一個第二止擋部34，該第一止擋部33設置於該第一氣密部31相反於該第二氣密部32的一側，該第二止擋部34設置於該第二氣密部32相反於該第一氣密部31的一側，該閥體30在該第一位置時，該第一止擋部33抵靠於該洩氣孔22鄰近該內部空間21一端的端面，該閥體30在該第二位置時，該第二止擋部34抵靠於該洩氣孔22鄰近該本體20外周緣一端的端面。The valve body 30 is provided with a first stop portion 33 and a second stop portion 34. The first stop portion 33 is disposed on the side of the first airtight portion 31 opposite to the second airtight portion 32 The second stop portion 34 is disposed on the side of the second airtight portion 32 opposite to the first airtight portion 31. When the valve body 30 is in the first position, the first stop portion 33 abuts against When the valve body 30 is in the second position, when the vent hole 22 is adjacent to the end surface of one end of the inner space 21, the second stopper 34 abuts against the end surface of the vent hole 22 adjacent to one end of the outer periphery of the main body 20.

該洩氣孔22的徑向寬度形成一個第一寬度W1，第一止擋部33的徑向寬度形成一個第二寬度W2，該第二止擋部34的徑向寬度形成一個第三寬度W3，該第一寬度W1小於該第二寬度W2與該第三寬度W3。The radial width of the vent hole 22 forms a first width W1, the radial width of the first stop portion 33 forms a second width W2, and the radial width of the second stop portion 34 forms a third width W3, The first width W1 is smaller than the second width W2 and the third width W3.

該閥體30包括有一個滑塊35及一個壓鈕36，第一止擋部33、該第一氣密部31與該第二氣密部32設置於該滑塊35的外周緣，該滑塊35的一端設置於該內部空間21內且另一端連接於該壓鈕36，該第二止擋部34設置於該壓鈕36鄰近該滑塊35的一側，該閥體30在該第一位置時，該壓鈕36相反於該滑塊35的一端設置於該本體20外。The valve body 30 includes a sliding block 35 and a pressing button 36. The first stop part 33, the first airtight part 31 and the second airtight part 32 are arranged on the outer periphery of the sliding block 35, and the sliding One end of the block 35 is arranged in the internal space 21 and the other end is connected to the pressing button 36. The second stopper 34 is arranged on a side of the pressing button 36 adjacent to the sliding block 35. The valve body 30 is located in the first In one position, the pressing button 36 is disposed outside the main body 20 at an end opposite to the sliding block 35.

該閥體30包括有一個彈性件37，該彈性件37設置於該內部空間21內，該彈性件37的一端抵靠於該滑塊35且另一端抵靠於該內部空間21的底面，該彈性件37能夠頂推該閥體30往該第一位置的方向移動。The valve body 30 includes an elastic member 37 disposed in the inner space 21, one end of the elastic member 37 abuts against the slider 35 and the other end abuts against the bottom surface of the inner space 21, the The elastic member 37 can push the valve body 30 to move toward the first position.

該本體20包括有一個閥座23及一個端蓋24，該端蓋24固定連接於該閥座23的一端，該內部空間21由該閥座23與該端蓋24組合形成，該洩氣孔22設置於該端蓋24。The body 20 includes a valve seat 23 and an end cover 24. The end cover 24 is fixedly connected to one end of the valve seat 23. The internal space 21 is formed by a combination of the valve seat 23 and the end cover 24, and the vent 22 Set at the end cap 24.

該洩氣閥10透過上述結構能夠提供微量洩氣的功能。該內部空間21能夠與打氣筒90相連通，該閥體30常態保持在該第一位置並使該洩氣孔22封閉，使用者要洩氣時能夠按壓該壓鈕36使該閥體30往該第二位置移動，因該閥體30在該第二位置時也會使該洩氣孔22封閉，該洩氣孔22只有在該閥體30在該第一位置與該第二位置之間的短暫過程能夠洩氣，藉此達到微量洩氣的效果。The bleed valve 10 can provide a slight bleed function through the above-mentioned structure. The internal space 21 can be communicated with the pump 90. The valve body 30 is normally maintained at the first position and the vent hole 22 is closed. When the user wants to deflate, he can press the button 36 to make the valve body 30 move toward the first position. The second position moves, because the valve body 30 will also close the vent hole 22 when the valve body 30 is in the second position. The vent hole 22 can only be used for a short period of time between the valve body 30 in the first position and the second position. Discourage, to achieve the effect of slight discouragement.

就以上所述可以歸納出本發明具有以下優點：From the above, it can be concluded that the present invention has the following advantages:

1.為本發明打氣筒之微量洩氣閥，其中洩氣閥包括有一個本體及一個閥體，該本體設置有一個內部空間及一個洩氣孔，該洩氣孔的一端連接該內部空間且另一端連通該本體的外周緣，該洩氣孔由鄰近該內部空間的一端至相反於該內部空間的一端之間的距離形成一個第一長度，該閥體能夠在第一位置與第二位置之間移動地插設於該洩氣孔，該閥體沿其徑向的外周緣設置有一個第一氣密部及一個第二氣密部，該第一氣密部與該第二氣密部能夠分別接觸或脫離該洩氣孔，該第一氣密部與該第二氣密部之間的距離形成一個第二長度，該第一長度小於該第二長度，該洩氣閥透過上述結構能夠提供微量洩氣的功能。1. The micro-vent valve of the inflator of the present invention, wherein the exhaust valve includes a body and a valve body, the body is provided with an internal space and a vent hole, one end of the vent hole is connected to the internal space and the other end is connected to the On the outer periphery of the body, the bleed hole forms a first length from an end adjacent to the internal space to an end opposite to the internal space, and the valve body is movably inserted between the first position and the second position. Located in the bleed hole, the valve body is provided with a first airtight part and a second airtight part along its radial outer periphery, the first airtight part and the second airtight part can be contacted or separated respectively The distance between the vent hole, the first airtight portion and the second airtight portion forms a second length, the first length is smaller than the second length, and the bleed valve can provide a slight bleed function through the structure.

惟上所述者，僅為本發明之較佳實施例而已，當不能以之限定本發明實施之範圍，故舉凡數值之變更或等效元件之置換，或依本發明申請專利範圍所作之均等變化與修飾，皆應仍屬本發明專利涵蓋之範疇。However, the above are only the preferred embodiments of the present invention. When they cannot be used to limit the scope of implementation of the present invention, all numerical changes or substitutions of equivalent elements or equivalents made in accordance with the scope of the patent application of the present invention are mentioned. Changes and modifications should still fall within the scope of the invention patent.

10:洩氣閥10: Vent valve

20:本體20: body

21:內部空間21: Internal space

22:洩氣孔22: Vent hole

23:閥座23: Valve seat

24:端蓋24: end cap

30:閥體30: Valve body

31:第一氣密部31: The first airtight part

32:第二氣密部32: The second airtight part

33:第一止擋部33: The first stop

34:第二止擋部34: second stop

35:滑塊35: Slider

36:壓鈕36: Button

37:彈性件37: Elastic

90:打氣筒90: pump

L1:第一長度L1: first length

L2:第二長度L2: second length

W1:第一寬度W1: first width

W2:第二寬度W2: second width

W3:第三寬度W3: third width

圖1：為本發明打氣筒之微量洩氣閥之立體外觀圖。圖2：為本發明打氣筒之微量洩氣閥之立體分解圖。圖3：為本發明打氣筒之微量洩氣閥閥體在第一位置之剖面結構圖。圖4：為本發明打氣筒之微量洩氣閥閥體在第一位置與第二位置之間之剖面結構圖。圖5：為本發明打氣筒之微量洩氣閥閥體在第二位置之剖面結構圖。 Figure 1 is a perspective view of the micro-vent valve of the pump of the present invention. Figure 2: is a three-dimensional exploded view of the micro-vent valve of the pump of the present invention. Fig. 3 is a cross-sectional structural view of the valve body of the micro relief valve of the inflator of the present invention at the first position. Fig. 4 is a cross-sectional structural view of the valve body of the micro relief valve of the inflator of the present invention between the first position and the second position. Figure 5: is a cross-sectional structural view of the valve body of the micro relief valve of the pump of the present invention at the second position.

10:洩氣閥 10: Vent valve

20:本體 20: body

23:閥座 23: Valve seat

24:端蓋 24: end cap

36:壓鈕 36: Button

90:打氣筒 90: pump

Claims

一種打氣筒之微量洩氣閥，其包括有：一個本體，該本體設置有一個內部空間及一個洩氣孔，該洩氣孔的一端連接該內部空間且另一端連通該本體的外周緣，該洩氣孔由鄰近該內部空間的一端至相反於該內部空間的一端之間的距離形成一個第一長度；一個閥體，該閥體能夠在第一位置與第二位置之間移動地插設於該洩氣孔，該閥體沿其徑向的外周緣設置有一個第一氣密部及一個第二氣密部，該第一氣密部與該第二氣密部能夠分別接觸或脫離該洩氣孔，該第一氣密部與該第二氣密部之間的距離形成一個第二長度，該第一長度小於該第二長度。 A micro-vent valve for an inflator, comprising: a body, the body is provided with an internal space and a vent hole, one end of the vent hole is connected to the internal space and the other end is connected to the outer periphery of the body, the vent hole is formed by The distance between the end adjacent to the internal space and the end opposite to the internal space forms a first length; a valve body, which is inserted in the vent hole so as to be movable between the first position and the second position , The valve body is provided with a first airtight part and a second airtight part along its radial outer periphery, and the first airtight part and the second airtight part can respectively contact or escape from the vent hole, the The distance between the first airtight part and the second airtight part forms a second length, and the first length is smaller than the second length.

如請求項1所述之打氣筒之微量洩氣閥，其中該閥體在該第一位置時，該第一氣密部接觸並封閉該洩氣孔，該第二氣密部脫離該洩氣孔，該閥體在該第二位置時，該第二氣密部接觸並封閉該洩氣孔，該第一氣密部脫離該洩氣孔，該閥體在該第一位置與該第二位置之間時，該第一氣密部與該第二氣密部能夠同時脫離該洩氣孔。 The micro-vent valve of the pump according to claim 1, wherein when the valve body is in the first position, the first airtight part contacts and closes the vent hole, the second airtight part separates from the vent hole, the When the valve body is in the second position, the second airtight part contacts and closes the vent hole, the first airtight part separates from the vent hole, and when the valve body is between the first position and the second position, The first airtight part and the second airtight part can escape from the vent hole at the same time.

如請求項2所述之打氣筒之微量洩氣閥，其中該閥體設置有一個第一止擋部及一個第二止擋部，該第一止擋部設置於該第一氣密部相反於該第二氣密部的一側，該第二止擋部設置於該第二氣密部相反於該第一氣密部的一側，該閥體在該第一位置時，該第一止擋部抵靠於該洩氣孔鄰近該內部空間一端的端面，該閥體在該第二位置時，該第二止擋部抵靠於該洩氣孔鄰近該本體外周緣一端的端面。 The micro bleed valve of an inflator according to claim 2, wherein the valve body is provided with a first stopper and a second stopper, and the first stopper is arranged on the opposite side of the first airtight portion One side of the second airtight portion, the second stopper portion is disposed on the side of the second airtight portion opposite to the first airtight portion, and when the valve body is in the first position, the first stopper The blocking portion abuts against the end surface of the vent hole adjacent to one end of the internal space, and when the valve body is in the second position, the second blocking portion abuts against the end surface of the vent hole adjacent to one end of the outer periphery of the body.

如請求項3所述之打氣筒之微量洩氣閥，其中該洩氣孔的徑向寬度形成一個第一寬度，該第一止擋部的徑向寬度形成一個第二寬度，該第二止擋部的徑向寬度形成一個第三寬度，該第一寬度小於該第二寬度與該第三寬度。 The micro-vent valve of the pump according to claim 3, wherein the radial width of the vent hole forms a first width, the radial width of the first stop part forms a second width, and the second stop part The radial width of φ forms a third width, and the first width is smaller than the second width and the third width.

如請求項4所述之打氣筒之微量洩氣閥，其中該閥體包括有一個滑塊及一個壓鈕，該第一止擋部、該第一氣密部與該第二氣密部設置於該滑塊的外周緣，該滑塊的一端設置於該內部空間內且另一端連接於該壓鈕，該第二止擋部設置於該壓鈕鄰近該滑塊的一側，該閥體在該第一位置時，該壓鈕相反於該滑塊的一端設置於該本體外。 The micro-vent valve of the pump according to claim 4, wherein the valve body includes a sliding block and a pressing button, and the first stop portion, the first airtight portion and the second airtight portion are arranged at On the outer periphery of the sliding block, one end of the sliding block is arranged in the internal space and the other end is connected to the pressing button, the second stop part is arranged on a side of the pressing button adjacent to the sliding block, and the valve body is In the first position, the end of the pressing button opposite to the sliding block is arranged outside the body.

如請求項5所述之打氣筒之微量洩氣閥，其中該閥體包括有一個彈性件，該彈性件設置於該內部空間內，該彈性件的一端抵靠於該滑塊且另一端抵靠於該內部空間的底面，該彈性件能夠頂推該閥體往該第一位置的方向移動。 The micro-vent valve for an inflator according to claim 5, wherein the valve body includes an elastic member disposed in the internal space, and one end of the elastic member abuts against the slider and the other end abuts against On the bottom surface of the internal space, the elastic member can push the valve body to move toward the first position.

如請求項6所述之打氣筒之微量洩氣閥，其中該本體包括有一個閥座及一個端蓋，該端蓋固定連接於該閥座的一端，該內部空間由該閥座與該端蓋組合形成，該洩氣孔設置於該端蓋。The micro-vent valve for an inflator according to claim 6, wherein the body includes a valve seat and an end cover, the end cover is fixedly connected to one end of the valve seat, and the internal space is formed by the valve seat and the end cover Formed by combination, the vent hole is arranged on the end cover.