TW201602537A

TW201602537A - Air pump containing low-pressure pressure gauge protector

Info

Publication number: TW201602537A
Application number: TW103123791A
Authority: TW
Inventors: shi-wen Zhuang
Original assignee: Topeak Inc
Priority date: 2014-07-10
Filing date: 2014-07-10
Publication date: 2016-01-16
Also published as: TWI504875B; US20160010637A1; DE102015107713A1

Abstract

Provided is an air pump containing low-pressure pressure gauge protector, comprising an air pumping device, a pressure gauge and a protector, wherein the air pumping device includes an inlet portion, a detecting portion and an outlet portion. The detecting portion has a base provided with a pressure gauge that is connected to an air pumping device having an air flow channel, the air flow channel is connected to the inlet portion, the detecting portion and the outlet portion, respectively. The protector that is disposed within the air flow channel comprises a base body and a sliding member, wherein, a sliding space and a through-hole are provided in the base body so that the through-hole communicates with the detecting portion with each other, and the sliding member is interposed in the sliding space. The sliding member that is moving with respect to the base body can change the size of the gap between the sliding member and the base body; therefore, the protector can regulate the flow to control the pressure scope that the pressure gauge can afford.

Description

具有低壓壓力錶保護裝置之打氣筒Inflator with low pressure gauge protection device

本發明主要係揭示一種打氣筒，尤指具有低壓壓力錶保護裝置之打氣筒。The present invention mainly discloses an inflator, especially an inflator having a low pressure gauge protection device.

請參照我國專利證書號數第I403644號之「嵌入壓力錶之打氣筒」專利案，其為一種嵌入壓力錶之打氣筒，其包括有：一具組裝孔之底座、一接設於底座之打氣軟管、一對接於組裝孔之汽缸、一能對汽缸往復唧動而使出氣軟管輸出加壓氣體之活塞桿、一安裝於汽缸之壓力錶；特徵在於：汽缸外周沿軸向的凹設有一嵌槽，而底座組裝孔中則在嵌槽範圍內設有一與出氣軟管連通之分流嘴，壓力錶設有一橫跨嵌槽而對合於汽缸外周之凹入部，更於凹入部中突設有一能伸入嵌槽定位之勾塊，以使壓力錶無法徑向的由嵌槽脫出，壓力錶且具有與分流嘴相對之測壓嘴，然後在壓力錶與底座之間設有一能***嵌槽之飾板，俾使壓力錶及飾板能將嵌槽完全封閉，而飾板背面更具有一能連通分流嘴、測壓嘴之通氣孔。Please refer to the patent of the "Inflator for Inserting a Pressure Gauge" in the Patent No. I403644 of the Chinese Patent No. I403644, which is an inflator embedded in a pressure gauge, which comprises: a base with an assembled hole, and a pumping connection to the base. a hose, a pair of cylinders connected to the assembly hole, a piston rod capable of reciprocating the cylinder to output the pressurized gas to the outlet hose, and a pressure gauge mounted on the cylinder; characterized by: the outer circumference of the cylinder is axially recessed There is a recessed groove, and the base assembly hole is provided with a diverter nozzle communicating with the air outlet hose in the range of the recessed groove, and the pressure gauge is provided with a concave portion which is adjacent to the outer circumference of the cylinder across the recessed groove, and protrudes in the concave portion. The utility model is provided with a hook block which can be inserted into the slot, so that the pressure gauge cannot be radially dislodged by the slot, the pressure gauge has a pressure measuring nozzle opposite to the splitting nozzle, and then an energy is provided between the pressure gauge and the base. Insert the plaque of the groove, so that the pressure gauge and the fascia can completely close the groove, and the back of the plaque has a vent hole that can connect the nozzle and the pressure nozzle.

然而，此種結構的打氣筒僅適用於對一般公路車進行打氣，一般公路車輪胎的胎壓必須要維持在至少100PSI以上，才能夠正常的運作，使自行車的騎乘者騎乘自行車的過程順暢並避免輪胎損壞，甚至有些輪胎是必須將胎壓打到160至220PSI，打氣筒所使用壓力錶的量測上限可能必須為260至300PSI，一般登山車的胎壓較公路車低，輪胎胎壓最高並不超過60PSI，甚至對於某些種類的輪胎的胎壓並不建議超過30PSI，若使用上述打氣筒進行打氣時，會因為胎壓太低而無法真正準確的讀出胎壓數值。However, the pump of this structure is only suitable for pumping the general road vehicle. Generally, the tire pressure of the road tire must be maintained at least 100 PSI or more in order to operate normally, so that the bicycle rider rides the bicycle. Smooth and avoid tire damage, even some tires must hit the tire pressure to 160 to 220 PSI, the upper limit of the pressure gauge used in the pump may have to be 260 to 300 PSI, the general mountain bike tire pressure is lower than the road car, tire tire The maximum pressure does not exceed 60 PSI. Even for some types of tires, the tire pressure is not recommended to exceed 30 PSI. If the above pump is used for pumping, the tire pressure will not be accurately read out because the tire pressure is too low.

並且，若將上述打氣筒的壓力錶更換為量測上限低的壓力錶時，將導致使用者操作活塞桿進行加壓的過程中瞬間壓力過高，氣體一口氣衝入壓力錶後直接造成壓力錶損壞。Moreover, if the pressure gauge of the above pump is replaced with a pressure gauge with a low upper limit, the instantaneous pressure will be too high during the process of the user operating the piston rod, and the gas will directly cause pressure after being rushed into the pressure gauge. The table is damaged.

有鑑於上述習知結構之缺失，本發明人乃發明出一種具有低壓壓力錶保護裝置之打氣筒，其係可克服上述習知結構之所有缺點。In view of the above-described lack of conventional structure, the inventors have invented an inflator having a low pressure gauge protection device that overcomes all of the disadvantages of the prior art described above.

本發明具有低壓壓力錶保護裝置之打氣筒其主要目的在於，提供一種包括有一個打氣裝置、一個壓力錶及一個保護裝置的打氣筒，打氣裝置包括有一個底座、一個汽缸及一個桿體，汽缸的一端連接於底座，桿體的一端由汽缸遠離底座的一端插設於汽缸中，打氣裝置具有一個進氣部、一個檢測部及一個出氣部，汽缸位於進氣部，打氣裝置具有一個氣流通道，氣流通道具有一個第一開口、一個第二開口及一個第三開口，第一開口對應進氣部並彼此相連通，第二開口對應檢測部並彼此相連通，第三開口對應出氣部並彼此相連通，壓力錶連接於檢測部，保護裝置設於氣流通道中，保護裝置包括有一個座體及一個滑移件，座體的外壁面抵靠於氣流通道的內壁面並形成氣密，座體包括有一個第一端及一個遠離第一端的第二端，座體的第一端靠近進氣部，座體中設有一個滑移空間，滑移空間由座體的第一端往第二端的方向延伸，座體於第一端與第二端之間還穿設有一個通孔，通孔連通滑移空間及座體的外壁面，通孔與壓力錶的進氣口彼此相連通，滑移件包括有一個第一端及一個遠離第一端的第二端，滑移件的第一端由座體的第一端插設於滑移空間中，滑移件的第一端位於座體的通孔與第二端之間，滑移件的第一端抵靠於滑移空間的內壁面並形成氣密，滑移件的第二端凸伸出滑移空間外，滑移件於第二端凸設有一個抵靠凸緣，滑移件的抵靠凸緣沿橫向的寬度不小於滑移空間沿橫向的寬度，滑移件於第一端與第二端之間還設有一個閃避段，閃避段沿橫向的寬度小於滑移空間沿橫向的寬度，藉由保護裝置控制流量的功能，避免氣體一口氣直接衝入壓力錶中而導致壓力瞬間衝高的情形，將壓力控制在壓力錶所能夠承受的範圍內，有效避免壓力錶因為壓力過高而損壞。The main purpose of the present invention is to provide a pump comprising a pumping device, a pressure gauge and a protection device, the pumping device comprising a base, a cylinder and a rod body, the cylinder One end of the rod is connected to the base, and one end of the rod body is inserted into the cylinder from the end of the cylinder away from the base. The air pumping device has an air inlet portion, a detecting portion and an air outlet portion, the cylinder is located at the air inlet portion, and the air pumping device has an air flow passage. The air flow passage has a first opening, a second opening and a third opening. The first openings correspond to the air inlet portions and communicate with each other. The second openings correspond to the detecting portions and communicate with each other, and the third openings correspond to the air outlet portions and are mutually connected to each other. The pressure gauge is connected to the detecting portion, and the protection device is disposed in the air flow passage. The protection device comprises a seat body and a sliding member. The outer wall surface of the seat body abuts against the inner wall surface of the air flow passage and forms an airtight seat. The body includes a first end and a second end remote from the first end, the first end of the seat body is adjacent to the air inlet portion, and the seat body There is a sliding space, the sliding space extends from the first end of the base body to the second end, and the through hole is further disposed between the first end and the second end, and the through hole communicates with the sliding space and An outer wall surface of the base body, the through hole and the air inlet of the pressure gauge are in communication with each other, the sliding member includes a first end and a second end away from the first end, and the first end of the sliding member is formed by the seat body The first end is inserted in the sliding space, the first end of the sliding member is located between the through hole and the second end of the seat body, and the first end of the sliding member abuts against the inner wall surface of the sliding space and forms a gas The second end of the sliding member protrudes out of the sliding space, and the sliding member protrudes from the second end with an abutting flange, and the width of the abutting flange of the sliding member is not less than the sliding space in the lateral direction. Between the first end and the second end, the sliding member is further provided with a dodging section. The width of the dodging section in the lateral direction is smaller than the width of the sliding space in the lateral direction, and the function of controlling the flow rate by the protection device is avoided. The gas directly rushes into the pressure gauge, causing the pressure to instantaneously rise, and the pressure can be controlled by the pressure gauge. Within the acceptable range, because of excessive pressure gauge avoid damage.

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 objects, advantages and novel features of the invention will become apparent from the description and appended claims.

有關本發明所採用之技術、手段及其功效，茲舉三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。The technology, the means and the functions of the present invention are described in detail with reference to the accompanying drawings.

參照圖1及圖2所示，為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例之立體外觀圖及立體分解圖。本發明打氣筒10包括有一個打氣裝置20、一個壓力錶30及一個保護裝置40；其中：1 and 2, a perspective view and an exploded perspective view of a first embodiment of a pump having a low pressure gauge protection device according to the present invention. The pump 10 of the present invention includes a pumping device 20, a pressure gauge 30 and a protection device 40; wherein:

請繼續參照圖3所示，為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例底座之剖面結構圖。該打氣裝置20包括有一個底座21、一個汽缸22及一個桿體23，該底座21具有一個底面211及一個遠離該底面211的頂面212，該底面211能夠供使用者將該底座21放置於地面。該底座21中設有一個容置空間24，該容置空間24由該底座21的底面211往頂面212的方向延伸。Please refer to FIG. 3 again, which is a cross-sectional structural view of the base of the first embodiment of the inflator with the low pressure gauge protection device of the present invention. The air pumping device 20 includes a base 21, a cylinder 22 and a rod body 23. The base 21 has a bottom surface 211 and a top surface 212 away from the bottom surface 211. The bottom surface 211 can be used by the user to place the base 21 on the base 21 ground. An accommodating space 24 is defined in the base 21 , and the accommodating space 24 extends from the bottom surface 211 of the base 21 toward the top surface 212 .

該打氣裝置20具有一個進氣部25及一個檢測部26，該進氣部25及該檢測部26設於該底座21並分別與該容置空間24相連通，該進氣部25及該檢測部26分別位於該底座21的頂面212上遠離彼此的兩端。The air pumping device 20 has an air inlet portion 25 and a detecting portion 26. The air inlet portion 25 and the detecting portion 26 are disposed on the base 21 and communicate with the receiving space 24, respectively. The air inlet portion 25 and the detecting portion The portions 26 are respectively located on the top surface 212 of the base 21 away from each other.

該打氣裝置20還具有一個出氣部27，該出氣部27設於該底座21並與該容置空間24相連通，該出氣部27位於該底座21的頂面212且位於該進氣部25與該檢測部26之間。該底座21連接有一個氣管271及一個風嘴頭272，該氣管271的一端連接於該底座21的出氣部27，該風嘴頭272連接於該氣管271遠離該出氣部27的一端。The air pumping device 20 further has an air outlet portion 27 disposed on the base 21 and communicating with the accommodating space 24. The air outlet portion 27 is located at the top surface 212 of the base 21 and located at the air inlet portion 25 and Between the detection units 26. The base 21 is connected to a gas pipe 271 and a tuyeres 272. One end of the gas pipe 271 is connected to the gas outlet portion 27 of the base 21, and the tuyeres 272 are connected to one end of the gas pipe 271 away from the gas outlet portion 27.

該打氣裝置20還具有一個連通裝置28，該連通裝置28設於該底座21的底面211，該連通裝置28呈長條狀，該連通裝置28容置於該底座21的容置空間24中。該連通裝置28中設有一個氣流通道281，該氣流通道281沿直線方向延伸，該連通裝置28還開設有一個第一開口282、一個第二開口283及一個第三開口284，該第一開口282、該第二開口283及該第三開口284分別與該氣流通道281彼此相連通，該第一開口282對應該底座21的進氣部25並彼此相連通，該第二開口283對應該檢測部26並彼此相連通，該第三開口284對應該出氣部27並彼此相連通。The airing device 20 further has a communication device 28 disposed on the bottom surface 211 of the base 21. The communication device 28 has an elongated shape, and the communication device 28 is received in the accommodating space 24 of the base 21. An air flow channel 281 is defined in the communication device 28, and the air flow channel 281 extends in a straight line. The communication device 28 further defines a first opening 282, a second opening 283 and a third opening 284. The first opening 282. The second opening 283 and the third opening 284 are respectively connected to the airflow passage 281. The first opening 282 corresponds to the air inlet portion 25 of the base 21 and communicates with each other. The second opening 283 corresponds to the detection. The portions 26 are in communication with each other, and the third openings 284 correspond to the gas outlet portions 27 and communicate with each other.

該汽缸22呈圓管狀，該汽缸22的一端連接於該底座21的進氣部25，該桿體23的一端由該汽缸22遠離該底座21的一端插設於該汽缸22中，該桿體23能夠相對該汽缸22進行往復滑移運動。The cylinder 22 has a circular tubular shape. One end of the cylinder 22 is connected to the air inlet portion 25 of the base 21. One end of the rod body 23 is inserted into the cylinder 22 from an end of the cylinder 22 away from the base 21. 23 is capable of performing a reciprocating slip motion with respect to the cylinder 22.

該壓力錶30連接於該底座21並且設置於該底座21的檢測部26，該壓力錶30位於該底座21的頂面212，該壓力錶30量測範圍的上限不超過30PSI。The pressure gauge 30 is connected to the base 21 and disposed on the detecting portion 26 of the base 21. The pressure gauge 30 is located on the top surface 212 of the base 21, and the upper limit of the measuring range of the pressure gauge 30 does not exceed 30 PSI.

該保護裝置40設於該氣流通道281中，且該保護裝置40位於該檢測部26，該保護裝置40包括有一個座體41及一個滑移件42，該座體41的外壁面抵靠於該氣流通道281的內壁面並形成氣密，該座體41包括有一個第一端411及一個遠離該第一端411的第二端412，該座體41的第一端411靠近該進氣部25，該座體41中設有一個滑移空間413，該滑移空間413由該座體41的第一端411往第二端412的方向延伸，該座體41於第一端411與第二端412之間還穿設有一個通孔414，該通孔414連通該滑移空間413及該座體41的外壁面，該通孔414與該壓力錶30的進氣口彼此相連通。The protection device 40 is disposed in the air flow channel 281, and the protection device 40 is located in the detecting portion 26, the protection device 40 includes a seat body 41 and a sliding member 42. The outer wall surface of the seat body 41 abuts against The inner wall surface of the air flow passage 281 is formed and airtight. The base body 41 includes a first end 411 and a second end 412 away from the first end 411. The first end 411 of the base 41 is adjacent to the air inlet. a sliding portion 413 is defined in the base portion 41. The sliding space 413 extends from the first end 411 of the base 41 toward the second end 412. The base 41 is at the first end 411. A through hole 414 is further disposed between the second end 412, and the through hole 414 communicates with the sliding space 413 and an outer wall surface of the base 41. The through hole 414 and the air inlet of the pressure gauge 30 communicate with each other. .

該滑移件42包括有一個第一端421及一個遠離該第一端421的第二端422，該滑移件42的第一端421由該座體41的第一端411插設於該滑移空間413中，該滑移件42的第一端421位於該座體41的通孔414與第二端412之間，該滑移件42的第一端421抵靠於該滑移空間413的內壁面並形成氣密。該滑移件42的第二端422凸伸出該滑移空間413外，該滑移件42於該第二端422凸設有一個抵靠凸緣423，該滑移件42的抵靠凸緣423沿橫向的寬度不小於該滑移空間413沿橫向的寬度，該滑移件42於第一端421與第二端422之間還設有一個閃避段424，該閃避段424沿橫向的寬度小於該滑移空間413沿橫向的寬度，該滑移件42相對該座體41移動時能夠改變該滑移件42與該座體41之間的間隙大小。The sliding member 42 includes a first end 421 and a second end 422 away from the first end 421. The first end 421 of the sliding member 42 is inserted into the first end 411 of the base 41. In the sliding space 413, the first end 421 of the sliding member 42 is located between the through hole 414 and the second end 412 of the base 41, and the first end 421 of the sliding member 42 abuts against the sliding space. The inner wall surface of 413 is airtight. The second end 422 of the sliding member 42 protrudes out of the sliding space 413. The sliding member 42 protrudes from the second end 422 with an abutting flange 423. The abutting convexity of the sliding member 42 The width of the edge 423 in the lateral direction is not less than the width of the sliding space 413 in the lateral direction. The sliding member 42 further defines a dodging section 424 between the first end 421 and the second end 422. The dodging section 424 is laterally The width is smaller than the width of the sliding space 413 in the lateral direction, and the gap between the sliding member 42 and the seat body 41 can be changed when the sliding member 42 moves relative to the seat body 41.

該保護裝置40還包括有一個調整件43，該調整件43設於該座體41的第二端412，且該調整件43螺設於該滑移空間413中而封閉該滑移空間413靠近該座體41的第二端412的一側，該調整件43能夠選擇性的轉動並同步沿該座體41軸向在該滑移空間413中移動。The protection device 40 further includes an adjusting member 43 disposed on the second end 412 of the base 41, and the adjusting member 43 is screwed in the sliding space 413 to close the sliding space 413. On one side of the second end 412 of the base 41, the adjusting member 43 is selectively rotatable and synchronously moved in the sliding space 413 along the axial direction of the base 41.

該保護裝置40還包括有一個導流件44，該導流件44設於該氣流通道281中，且該導流件44位於該滑移件42靠近該進氣部25的一側，該導流件44呈長條狀，該導流件44於外周緣設有數個擋壁441，該擋壁441抵靠於該氣流通道281的內壁面，所述導流件44的數個擋壁441中每相鄰的兩個之間皆形成一個流道442，該流道442沿直線方向延伸。The protection device 40 further includes a flow guiding member 44 disposed in the air flow passage 281, and the flow guiding member 44 is located at a side of the sliding member 42 adjacent to the air inlet portion 25. The flow element 44 has an elongated shape. The flow guide 44 is provided with a plurality of retaining walls 441 on the outer periphery. The retaining wall 441 abuts against the inner wall surface of the air flow passage 281, and the plurality of retaining walls 441 of the flow guiding member 44 A flow path 442 is formed between each adjacent two of the two, and the flow path 442 extends in a straight line direction.

請繼續參照圖4至8所示，為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例保護裝置之動作圖及壓力錶之動作圖。該打氣筒10在使用時，使用者能夠操作該桿體23擠壓該汽缸22中的氣體以進行打氣的作業，在打氣的過程中，該汽缸22中的氣體被擠壓置該氣流通道281中，經由該導流件44導正後之氣流直接流向該滑移件42，該滑移件42經氣流頂推之後會往該座體41的方向靠近，進而使該滑移件42第二端422與該座體41第一端411之間的間隙縮小，達到控制氣流流量的效果。而後氣流會流經該滑移件42的閃避段424，最後由該座體41的通孔414流至該壓力錶30中，以量測氣體的壓力。氣體同時還會經由該出氣部27的氣管271，並流到該風嘴頭272而能夠對輪胎進行打氣。Please refer to FIG. 4 to FIG. 8 for the operation diagram of the first embodiment of the pump with the low pressure gauge protection device of the present invention and the action diagram of the pressure gauge. When the pump 10 is in use, the user can operate the rod body 23 to press the gas in the cylinder 22 to perform a pumping operation. During the pumping process, the gas in the cylinder 22 is squeezed to the air flow passage 281. The airflow guided by the flow guiding member 44 flows directly to the sliding member 42. The sliding member 42 is pushed toward the seat 41 after being pushed by the airflow, thereby making the sliding member 42 second. The gap between the end 422 and the first end 411 of the seat body 41 is reduced to achieve the effect of controlling the flow of air. The airflow then flows through the dodging section 424 of the slip member 42 and finally flows through the through hole 414 of the seat 41 into the pressure gauge 30 to measure the pressure of the gas. At the same time, the gas passes through the gas pipe 271 of the gas outlet portion 27 and flows to the tuyeres 272 to inhale the tire.

該打氣筒10能夠藉由該保護裝置40控制流量的功能，避免氣體一口氣直接衝入該壓力錶30中而導致壓力瞬間衝高的情形，將壓力控制在該壓力錶30所能夠承受的範圍內，有效避免該壓力錶30因為壓力過高而損壞。該打氣筒10在加壓的過程中壓力高，並非正確數值，當使用者未對該汽缸22中的氣體加壓時，氣體仍會持續經由該滑移件42與該座體41之間的間隙流通，使該壓力錶30中與該氣流通道281中的壓力漸趨平衡，進而獲得正確的壓力數據。The pump 10 can control the flow rate function by the protection device 40, and avoid the situation that the gas directly injects into the pressure gauge 30 to cause the pressure to instantaneously rise, and the pressure is controlled within the range that the pressure gauge 30 can bear. Therefore, the pressure gauge 30 is effectively prevented from being damaged due to excessive pressure. The pump 10 has a high pressure during pressurization, which is not a correct value. When the user does not pressurize the gas in the cylinder 22, the gas continues to pass between the slip member 42 and the seat body 41. The gap is circulated so that the pressure in the pressure gauge 30 and the gas flow passage 281 are gradually balanced, thereby obtaining correct pressure data.

參照圖9所示，為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例之剖面結構圖。本案第二個實施例與第一個實施例大致相同，主要差異在於該保護裝置40a還包括有一個彈性件45a，該彈性件45a在本實施例中為壓縮彈簧，該彈性件45a設於該滑移件42a與該調整件43a之間，且該彈性件45a的兩端分別抵靠於該滑移件42a與該調整件43a，該彈性件45a能夠頂推該滑移件42a往遠離該調整件43a的方向移動。Referring to Figure 9, there is shown a cross-sectional structural view of a second embodiment of an inflator having a low pressure gauge protection device of the present invention. The second embodiment of the present invention is substantially the same as the first embodiment. The main difference is that the protection device 40a further includes an elastic member 45a. In this embodiment, the elastic member 45a is a compression spring, and the elastic member 45a is disposed on the second embodiment. Between the sliding member 42a and the adjusting member 43a, and the two ends of the elastic member 45a respectively abut against the sliding member 42a and the adjusting member 43a, the elastic member 45a can push the sliding member 42a away from the The direction of the adjustment member 43a moves.

請繼續參照圖10至圖12所示，為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例保護裝置之動作圖。當該打氣筒10打氣而使氣流頂推該滑移件42a時，該滑移件42a同時受到該彈性件45a的頂推力道，使該滑移件42a移動至適當位置而將該滑移件42a與該座體41a之間的間隙維持在適當大小，使該滑移件42a發揮保護該壓力錶30功能的同時還避免氣流流進該壓力錶30的流速過低，增加該壓力錶30量測壓力的反應速度，並且能夠視情況調整該調整件43a而該彈性件45a頂推於該滑移件42a的彈力值。Please refer to FIG. 10 to FIG. 12 , which are diagrams showing the operation of the second embodiment of the air pump with the low pressure gauge protection device of the present invention. When the pump 10 is inflated to cause the airflow to push the sliding member 42a, the sliding member 42a is simultaneously subjected to the top thrust passage of the elastic member 45a, and the sliding member 42a is moved to a proper position to move the sliding member. The gap between the 42a and the seat body 41a is maintained at an appropriate size so that the sliding member 42a functions to protect the pressure gauge 30 while preventing the flow rate of the airflow into the pressure gauge 30 from being too low, increasing the amount of the pressure gauge 30. The reaction speed of the pressure is measured, and the adjusting member 43a can be adjusted as appropriate and the elastic member 45a is pushed against the elastic value of the sliding member 42a.

參照圖13至15所示，為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例之立體外觀圖、立體分解圖及剖面結構圖。本案第三個實施例與第一個實施例大致相同，主要差異在於該壓力錶30b外周緣設有一個承接座31b，該承接座31b的底部設有一個延伸管32b，該延伸管32b遠離該壓力錶30b錶面的一端連接於該底座21b，該承接座31b靠近該汽缸22b的一側設有一個環繞部33b，該環繞部33b環設於該汽缸22外，該保護裝置40b設於該延伸管32b中。Referring to Figures 13 to 15, a perspective view, an exploded perspective view and a cross-sectional structural view of a third embodiment of the pump having the low pressure gauge protection device of the present invention are shown. The third embodiment of the present invention is substantially the same as the first embodiment. The main difference is that the outer periphery of the pressure gauge 30b is provided with a receiving seat 31b, and the bottom of the receiving seat 31b is provided with an extending tube 32b, and the extending tube 32b is away from the One end of the surface of the pressure gauge 30b is connected to the base 21b. The side of the receiving seat 31b adjacent to the cylinder 22b is provided with a surrounding portion 33b. The surrounding portion 33b is disposed outside the cylinder 22, and the protection device 40b is disposed on the extension. In tube 32b.

請繼續參照圖16至圖18所示，為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例保護裝置之動作圖。本案藉由將該保護裝置40b裝設於該汽缸22b與該壓力錶30b的量測組件之間即能夠達到調節壓力的效果，使該保護裝置40b能夠適用於各種型態的該打氣筒10b，確實達到保護該壓力錶30b的功效。Please refer to FIG. 16 to FIG. 18, which are diagrams showing the operation of the third embodiment of the air pump with the low pressure gauge protection device of the present invention. In this case, by installing the protection device 40b between the cylinder 22b and the measuring component of the pressure gauge 30b, the effect of adjusting the pressure can be achieved, so that the protection device 40b can be applied to the pump 10b of various types. The effect of protecting the pressure gauge 30b is indeed achieved.

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

1.為本發明具有低壓壓力錶保護裝置之打氣筒，其中打氣筒包括有一個打氣裝置、一個壓力錶及一個保護裝置，打氣裝置包括有一個底座、一個汽缸及一個桿體，汽缸的一端連接於底座，桿體的一端由汽缸遠離底座的一端插設於汽缸中，打氣裝置具有一個進氣部、一個檢測部及一個出氣部，汽缸位於進氣部，打氣裝置具有一個氣流通道，氣流通道具有一個第一開口、一個第二開口及一個第三開口，第一開口對應進氣部並彼此相連通，第二開口對應檢測部並彼此相連通，第三開口對應出氣部並彼此相連通，壓力錶連接於檢測部，保護裝置設於氣流通道中，保護裝置包括有一個座體及一個滑移件，座體的外壁面抵靠於氣流通道的內壁面並形成氣密，座體包括有一個第一端及一個遠離第一端的第二端，座體的第一端靠近進氣部，座體中設有一個滑移空間，滑移空間由座體的第一端往第二端的方向延伸，座體於第一端與第二端之間還穿設有一個通孔，通孔連通滑移空間及座體的外壁面，通孔與壓力錶的進氣口彼此相連通，滑移件包括有一個第一端及一個遠離第一端的第二端，滑移件的第一端由座體的第一端插設於滑移空間中，滑移件的第一端位於座體的通孔與第二端之間，滑移件的第一端抵靠於滑移空間的內壁面並形成氣密，滑移件的第二端凸伸出滑移空間外，滑移件於第二端凸設有一個抵靠凸緣，滑移件的抵靠凸緣沿橫向的寬度不小於滑移空間沿橫向的寬度，滑移件於第一端與第二端之間還設有一個閃避段，閃避段沿橫向的寬度小於滑移空間沿橫向的寬度，藉由保護裝置控制流量的功能，避免氣體一口氣直接衝入壓力錶中而導致壓力瞬間衝高的情形，將壓力控制在壓力錶所能夠承受的範圍內，有效避免壓力錶因為壓力過高而損壞。1. The air pump of the invention having a low pressure gauge protection device, wherein the air pump comprises an air pumping device, a pressure gauge and a protection device, the air pumping device comprises a base, a cylinder and a rod body, and one end of the cylinder is connected In the base, one end of the rod body is inserted into the cylinder from one end of the cylinder away from the base, the air pumping device has an air inlet portion, a detecting portion and an air outlet portion, the cylinder is located at the air inlet portion, and the air pumping device has an air flow passage and an air flow passage. The first opening has a first opening, a second opening, and a third opening. The first opening corresponds to the air inlet portion and communicates with each other. The second opening corresponds to the detecting portion and communicates with each other, and the third opening corresponds to the air outlet portion and communicates with each other. The pressure gauge is connected to the detecting portion, and the protection device is disposed in the airflow passage. The protection device comprises a seat body and a sliding member. The outer wall surface of the seat body abuts against the inner wall surface of the airflow passage and is airtight, and the seat body includes a first end and a second end remote from the first end, the first end of the seat body is adjacent to the air inlet portion, and a sliding space is arranged in the seat body The sliding space extends from the first end of the base body to the second end, and the through hole is further disposed between the first end and the second end, and the through hole communicates with the sliding space and the outer wall surface of the base body. The through hole communicates with the air inlet of the pressure gauge, the sliding member includes a first end and a second end away from the first end, and the first end of the sliding member is inserted from the first end of the seat body In the sliding space, the first end of the sliding member is located between the through hole and the second end of the seat body, and the first end of the sliding member abuts against the inner wall surface of the sliding space and forms an airtight, sliding member The second end protrudes out of the sliding space, and the sliding member protrudes from the second end with an abutting flange. The width of the abutting flange of the sliding member in the lateral direction is not less than the width of the sliding space along the lateral direction, and the sliding The moving piece is further provided with a dodging section between the first end and the second end, and the width of the dodging section in the lateral direction is smaller than the width of the sliding space in the lateral direction, and the function of controlling the flow rate by the protection device prevents the gas from directly entering the gas In the pressure gauge, the pressure is instantaneously increased, and the pressure is controlled within the range that the pressure gauge can withstand. Effectively prevent the pressure gauge from being damaged due to excessive pressure.

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。The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

10‧‧‧打氣筒
20‧‧‧打氣裝置
21‧‧‧底座
211‧‧‧底面
212‧‧‧頂面
22‧‧‧汽缸
23‧‧‧桿體
24‧‧‧容置空間
25‧‧‧進氣部
26‧‧‧檢測部
27‧‧‧出氣部
271‧‧‧氣管
272‧‧‧風嘴頭
28‧‧‧連通裝置
281‧‧‧氣流通道
282‧‧‧第一開口
283‧‧‧第二開口
284‧‧‧第三開口
30‧‧‧壓力錶
40‧‧‧保護裝置
41‧‧‧座體
411‧‧‧第一端
412‧‧‧第二端
413‧‧‧滑移空間
414‧‧‧通孔
42‧‧‧滑移件
421‧‧‧第一端
422‧‧‧第二端
423‧‧‧抵靠凸緣
424‧‧‧閃避段
43‧‧‧調整件
44‧‧‧導流件
441‧‧‧擋壁
442‧‧‧流道
40a‧‧‧保護裝置
41a‧‧‧座體
42a‧‧‧滑移件
43a‧‧‧調整件
45a‧‧‧彈性件
10b‧‧‧打氣筒
21b‧‧‧底座
22b‧‧‧汽缸
30b‧‧‧壓力錶
31b‧‧‧承接座
32b‧‧‧延伸管
33b‧‧‧環繞部
40b‧‧‧保護裝置10‧‧‧Inflator
20‧‧‧Air pumping device
21‧‧‧Base
211‧‧‧ bottom
212‧‧‧ top surface
22‧‧‧ cylinder
23‧‧‧ rod body
24‧‧‧ accommodating space
25‧‧‧Intake Department
26‧‧‧Detection Department
27‧‧‧Exhaust department
271‧‧‧ trachea
272‧‧‧Wind mouth
28‧‧‧Connecting device
281‧‧‧Air passage
282‧‧‧ first opening
283‧‧‧ second opening
284‧‧‧ third opening
30‧‧‧ Pressure gauge
40‧‧‧protection device
41‧‧‧ body
411‧‧‧ first end
412‧‧‧ second end
413‧‧‧Sliding space
414‧‧‧through hole
42‧‧‧Slipper
421‧‧‧ first end
422‧‧‧ second end
423‧‧‧Abut the flange
424‧‧‧dove section
43‧‧‧Adjustment
44‧‧‧ deflector
441‧‧ ‧ retaining wall
442‧‧‧ flow path
40a‧‧‧protection device
41a‧‧‧ body
42a‧‧‧Slipper
43a‧‧‧Adjustment
45a‧‧‧Flexible parts
10b‧‧‧Inflator
21b‧‧‧Base
22b‧‧‧ cylinder
30b‧‧‧ pressure gauge
31b‧‧‧ socket
32b‧‧‧Extension tube
33b‧‧‧ Surrounding
40b‧‧‧protection device

圖1：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例之立體外觀圖。圖2：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例之立體分解圖。圖3：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例底座之剖面結構圖。圖4：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例保護裝置於打氣裝置加壓時之動作圖。圖5：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例保護裝置於打氣裝置加壓時之局部放大動作圖。圖6：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例壓力錶於打氣裝置加壓時之動作圖。圖7：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例保護裝置於打氣裝置釋放時之動作圖。圖8：為本發明具有低壓壓力錶保護裝置之打氣筒第一個實施例壓力錶於打氣裝置釋放時之動作圖。圖9：為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例底座之剖面結構圖。圖10：為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例保護裝置於打氣裝置加壓時之動作圖。圖11：為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例保護裝置於打氣裝置加壓時之局部放大動作圖。圖12：為本發明具有低壓壓力錶保護裝置之打氣筒第二個實施例保護裝置於打氣裝置釋放時之動作圖。圖13：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例之立體外觀圖。圖14：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例之立體分解圖。圖15：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例之剖面結構圖。圖16：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例保護裝置於打氣裝置加壓時之動作圖。圖17：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例保護裝置於打氣裝置加壓時之局部放大動作圖。圖18：為本發明具有低壓壓力錶保護裝置之打氣筒第三個實施例保護裝置於打氣裝置釋放時之動作圖。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a first embodiment of a pump having a low pressure gauge protection device of the present invention. Figure 2 is a perspective exploded view of the first embodiment of the pump having the low pressure gauge protection device of the present invention. Figure 3 is a cross-sectional structural view showing the base of the first embodiment of the pump having the low pressure gauge protection device of the present invention. Fig. 4 is a view showing the action of the first embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Fig. 5 is a partial enlarged operation view of the first embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Fig. 6 is a view showing the action of the pressure gauge of the first embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Fig. 7 is a view showing the action of the first embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is released. Fig. 8 is a view showing the action of the first embodiment of the air pump with the low pressure gauge protection device of the present invention when the air pump is released. Figure 9 is a cross-sectional structural view showing the base of the second embodiment of the pump having the low pressure gauge protection device of the present invention. Fig. 10 is a view showing the action of the second embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Figure 11 is a partial enlarged operation view of the second embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Figure 12 is a view showing the action of the second embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is released. Figure 13 is a perspective view showing a third embodiment of the pump having the low pressure gauge protection device of the present invention. Figure 14 is a perspective exploded view of a third embodiment of the pump having the low pressure gauge protection device of the present invention. Figure 15 is a cross-sectional structural view showing a third embodiment of the pump having the low pressure gauge protection device of the present invention. Figure 16 is a view showing the action of the third embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Figure 17 is a partial enlarged operation view of the third embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is pressurized. Figure 18 is a view showing the action of the third embodiment of the pump having the low pressure gauge protection device of the present invention when the air pump is released.

21‧‧‧底座 21‧‧‧Base

22‧‧‧汽缸 22‧‧‧ cylinder

23‧‧‧桿體 23‧‧‧ rod body

24‧‧‧容置空間 24‧‧‧ accommodating space

25‧‧‧進氣部 25‧‧‧Intake Department

26‧‧‧檢測部 26‧‧‧Detection Department

27‧‧‧出氣部 27‧‧‧Exhaust department

28‧‧‧連通裝置 28‧‧‧Connecting device

281‧‧‧氣流通道 281‧‧‧Air passage

282‧‧‧第一開口 282‧‧‧ first opening

283‧‧‧第二開口 283‧‧‧ second opening

284‧‧‧第三開口 284‧‧‧ third opening

30‧‧‧壓力錶 30‧‧‧ Pressure gauge

40‧‧‧保護裝置 40‧‧‧protection device

41‧‧‧座體 41‧‧‧ body

411‧‧‧第一端 411‧‧‧ first end

412‧‧‧第二端 412‧‧‧ second end

413‧‧‧滑移空間 413‧‧‧Sliding space

414‧‧‧通孔 414‧‧‧through hole

42‧‧‧滑移件 42‧‧‧Slipper

421‧‧‧第一端 421‧‧‧ first end

422‧‧‧第二端 422‧‧‧ second end

423‧‧‧抵靠凸緣 423‧‧‧Abut the flange

424‧‧‧閃避段 424‧‧‧dove section

43‧‧‧調整件 43‧‧‧Adjustment

44‧‧‧導流件 44‧‧‧ deflector

Claims

一種具有低壓壓力錶保護裝置之打氣筒，其包括有：一個打氣裝置，該打氣裝置包括有一個底座、一個汽缸及一個桿體，該汽缸的一端連接於該底座，該桿體的一端由該汽缸遠離該底座的一端插設於該汽缸中，該打氣裝置具有一個進氣部、一個檢測部及一個出氣部，該汽缸位於該進氣部，該打氣裝置具有一個氣流通道，該氣流通道具有一個第一開口、一個第二開口及一個第三開口，該第一開口對應該進氣部並彼此相連通，該第二開口對應該檢測部並彼此相連通，該第三開口對應該出氣部並彼此相連通；一個壓力錶，該壓力錶連接於該檢測部，以及；一個保護裝置，該保護裝置設於該氣流通道中，該保護裝置包括有一個座體及一個滑移件，該座體的外壁面抵靠於該氣流通道的內壁面並形成氣密，該座體包括有一個第一端及一個遠離該第一端的第二端，該座體的第一端靠近該進氣部，該座體中設有一個滑移空間，該滑移空間由該座體的第一端往第二端的方向延伸，該座體於第一端與第二端之間還穿設有一個通孔，該通孔連通該滑移空間及該座體的外壁面，該通孔與該壓力錶的進氣口彼此相連通，該滑移件包括有一個第一端及一個遠離該第一端的第二端，該滑移件的第一端由該座體的第一端插設於該滑移空間中，該滑移件的第一端位於該座體的通孔與第二端之間，該滑移件的第一端抵靠於該滑移空間的內壁面並形成氣密，該滑移件的第二端凸伸出該滑移空間外，該滑移件於該第二端凸設有一個抵靠凸緣，該滑移件的抵靠凸緣沿橫向的寬度不小於該滑移空間沿橫向的寬度，該滑移件於第一端與第二端之間還設有一個閃避段，該閃避段沿橫向的寬度小於該滑移空間沿橫向的寬度。An air pump with a low pressure gauge protection device includes: an air pumping device comprising a base, a cylinder and a rod body, one end of the cylinder is connected to the base, and one end of the rod body is An end of the cylinder away from the base is inserted into the cylinder, the air pump has an air inlet portion, a detecting portion and an air outlet portion, the cylinder is located at the air inlet portion, and the air pumping device has an air flow passage, the air flow passage having a first opening, a second opening, and a third opening, the first openings corresponding to the air inlets and communicating with each other, the second openings corresponding to the detecting portions and communicating with each other, the third opening corresponding to the air outlet And connected to each other; a pressure gauge connected to the detecting portion; and a protection device disposed in the air flow passage, the protection device comprising a seat body and a sliding member, the seat The outer wall surface of the body abuts against the inner wall surface of the air flow passage and is airtight, and the base body includes a first end and a second portion away from the first end The first end of the seat body is adjacent to the air inlet portion, and the seat body is provided with a sliding space extending from a first end of the seat body to a second end, the seat body being first A through hole is further disposed between the end and the second end, and the through hole communicates with the sliding space and the outer wall surface of the seat body, and the through hole communicates with the air inlet of the pressure gauge, the sliding member The first end of the sliding member is inserted into the sliding space by the first end of the sliding member, and the first end of the sliding member is included The end is located between the through hole of the seat body and the second end, the first end of the sliding member abuts against the inner wall surface of the sliding space and is airtight, and the second end of the sliding member protrudes from the Outside the sliding space, the sliding member has abutting flange at the second end, and the width of the abutting flange of the sliding member in the lateral direction is not less than the width of the sliding space in the lateral direction, the slip A dodging section is further disposed between the first end and the second end, and the width of the dodging section in the lateral direction is smaller than the width of the sliding space in the lateral direction.

如請求項所述之具有低壓壓力錶保護裝置之打氣筒，其中該保護裝置還包括有一個調整件，該調整件設於該座體的第二端，且該調整件螺設於該滑移空間中而封閉該滑移空間靠近該座體的第二端的一側，該調整件能夠選擇性的轉動並同步沿該座體軸向在該滑移空間中移動，該保護裝置還包括有一個彈性件，該彈性件設於該滑移件與該調整件之間，且該彈性件的兩端分別抵靠於該滑移件與該調整件，該彈性件能夠頂推該滑移件往遠離該調整件的方向移動。The pump having a low pressure gauge protection device as claimed in claim 1 , wherein the protection device further comprises an adjusting member disposed at the second end of the seat body, and the adjusting member is screwed on the slip Closely closing the sliding space in a space close to a side of the second end of the seat body, the adjusting member is selectively rotatable and synchronously movable in the sliding space along the axial direction of the seat body, and the protection device further comprises a An elastic member is disposed between the sliding member and the adjusting member, and two ends of the elastic member respectively abut against the sliding member and the adjusting member, and the elastic member can push the sliding member toward Move away from the direction of the adjustment member.

如請求項1所述之具有低壓壓力錶保護裝置之打氣筒，其中該彈性件為壓縮彈簧。An inflator having a low pressure gauge protection device according to claim 1, wherein the elastic member is a compression spring.

如請求項2所述之具有低壓壓力錶保護裝置之打氣筒，其中該保護裝置還包括有一個導流件，該導流件設於該氣流通道中，且該導流件位於該滑移件靠近該進氣部的一側，該導流件於外周緣設有數個擋壁，該擋壁抵靠於該氣流通道的內壁面，所述導流件的數個擋壁中每相鄰的兩個之間皆形成一個流道，該流道沿直線方向延伸。The inflator of claim 2, wherein the protection device further comprises a flow guiding member disposed in the air flow passage, and the flow guiding member is located in the sliding member Close to the side of the air inlet portion, the flow guiding member is provided with a plurality of retaining walls on the outer peripheral edge, the blocking wall abuts against the inner wall surface of the air flow passage, and each adjacent one of the plurality of retaining walls of the flow guiding member A flow path is formed between the two, and the flow path extends in a straight line direction.

如請求項4所述之具有低壓壓力錶保護裝置之打氣筒，其中該壓力錶量測範圍的上限不超過30PSI。The inflator of claim 4, wherein the upper limit of the gauge measurement range does not exceed 30 PSI.

如請求項5所述之具有低壓壓力錶保護裝置之打氣筒，其中該底座設有一個容置空間，該底座還包括有一個連通裝置，該連通裝置容置於該底座的容置空間中，該氣流通道設於該連通裝置中，該氣流通道沿直線方向延伸。The pump of claim 5, wherein the base is provided with an accommodating space, and the base further includes a connecting device, the connecting device is received in the accommodating space of the base. The air flow passage is provided in the communication device, and the air flow passage extends in a straight line direction.

如請求項6所述之具有低壓壓力錶保護裝置之打氣筒，其中該底座具有一個底面及一個遠離該底面的頂面，該底面能夠供使用者將該底座放置於地面，該容置空間由該底座的底面往頂面的方向延伸，該壓力錶連接於該底座並且設置於檢測部，該壓力錶位於該底座的頂面。The pump having a low pressure gauge protection device according to claim 6, wherein the base has a bottom surface and a top surface away from the bottom surface, the bottom surface being capable of the user placing the base on the ground, the accommodating space being The bottom surface of the base extends in the direction of the top surface, and the pressure gauge is connected to the base and disposed on the detecting portion, and the pressure gauge is located on the top surface of the base.

如請求項7所述之具有低壓壓力錶保護裝置之打氣筒，其中該保護裝置位於該檢測部。An inflator having a low pressure gauge protection device according to claim 7, wherein the protection device is located in the detecting portion.

如請求項7所述之具有低壓壓力錶保護裝置之打氣筒，其中該進氣部及該檢測部設於該底座並與該容置空間相連通，該進氣部及該檢測部分別位於該底座的頂面上遠離彼此的兩端。The pump having the low pressure gauge protection device according to claim 7, wherein the air inlet portion and the detecting portion are disposed on the base and communicate with the accommodating space, wherein the air inlet portion and the detecting portion are respectively located The top surface of the base is away from each other.

如請求項8所述之具有低壓壓力錶保護裝置之打氣筒，其中該出氣部設於該底座並與該容置空間相連通，該出氣部位於該底座的頂面且位於該進氣部與該檢測部之間，該底座連接有一個氣管及一個風嘴頭，該氣管的一端連接於該底座的出氣部，該風嘴頭連接於該氣管遠離該出氣部的一端。The pump having a low pressure gauge protection device according to claim 8, wherein the air outlet portion is disposed at the base and communicates with the accommodating space, and the air outlet portion is located at a top surface of the base and located at the air inlet portion An air tube and a tuyeres are connected to the base, and one end of the air tube is connected to an air outlet of the base, and the air nozzle is connected to an end of the air tube away from the air outlet.

如請求項6所述之具有低壓壓力錶保護裝置之打氣筒，其中該壓力錶外周緣設有一個承接座，該承接座的底部設有一個延伸管，該延伸管遠離該壓力錶錶面的一端連接於該底座，該保護裝置設於該延伸管中。The pump having a low pressure gauge protection device according to claim 6, wherein the outer periphery of the pressure gauge is provided with a receiving seat, and the bottom of the receiving seat is provided with an extension pipe, and the extension pipe is away from one end of the surface of the pressure gauge. Connected to the base, the protection device is disposed in the extension tube.

如請求項11所述之具有低壓壓力錶保護裝置之打氣筒，其中該承接座靠近該汽缸的一側設有一個環繞部，該環繞部環設於該汽缸外。A pump having a low pressure gauge protection device according to claim 11, wherein a side of the socket adjacent to the cylinder is provided with a surrounding portion, the surrounding portion being disposed outside the cylinder.