TWI434997B - The positioning structure of light type air pump - Google Patents
The positioning structure of light type air pump Download PDFInfo
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- TWI434997B TWI434997B TW100113804A TW100113804A TWI434997B TW I434997 B TWI434997 B TW I434997B TW 100113804 A TW100113804 A TW 100113804A TW 100113804 A TW100113804 A TW 100113804A TW I434997 B TWI434997 B TW I434997B
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Description
本發明涉及一種用來對輪胎等被充氣物打入氣體的小型打氣筒，特別是一種在不需要使用而將打氣筒收縮成小體積時，避免打氣筒因為間隙存在而產生晃動的結構改良。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a small inflator for injecting a gas into an inflated material such as a tire, and more particularly to a structural improvement in which the inflator is prevented from swaying due to the presence of a gap when the inflator is contracted into a small volume without using it.
基於攜帶方便的考量，目前已有適合於配帶在自行車上的輕便型打氣筒問市；所述習知的輕便型打氣筒，其結構包含有一具有氣嘴的氣缸、一組合於氣缸內且一端結合有活塞的推桿，以及組合於推桿另一端的握把；使用者握持握把而操作推桿相對於氣缸軸向往復移動時，使空氣被導入氣缸內，並利用活塞推動氣缸的氣體而從氣嘴流出，以對被充氣物進行充氣。當不使用時，可以將握把相對於氣缸軸向推移至使活塞位於氣缸的下死點位置，讓整個打氣筒收縮成最小體積而便於攜帶。Based on the convenience of carrying, there is a portable pump suitable for being worn on a bicycle. The conventional portable pump has a structure including a cylinder having a nozzle and a combination in the cylinder. a push rod combined with a piston at one end, and a grip combined with the other end of the push rod; when the user holds the grip and the operating push rod reciprocates relative to the axial direction of the cylinder, the air is introduced into the cylinder, and the cylinder is pushed by the piston The gas flows out of the nozzle to inflate the inflated material. When not in use, the grip can be axially displaced relative to the cylinder to position the piston at the bottom dead center of the cylinder, allowing the entire pump to contract to a minimum volume for portability.
由於一般的輕便型打氣筒的推桿直徑都比氣缸蓋之推桿導孔的內徑小，致使推桿的外徑與氣缸蓋的推桿導孔內徑之間存在間隙，因此，即便握把被推移至其端部接觸氣缸的端部，仍然會因為推桿與氣缸蓋之推桿導孔之間的間隙而有晃動，以致於發出聲音的問題，影響產品的整體質感。Since the diameter of the push rod of the general portable type air pump is smaller than the inner diameter of the push rod guide hole of the cylinder head, there is a gap between the outer diameter of the push rod and the inner diameter of the push rod guide hole of the cylinder head, so even the grip The end that is pushed to the end of the cylinder is still swayed by the gap between the push rod and the push rod guide hole of the cylinder head, so that the problem of sound is emitted, which affects the overall texture of the product.
本發明的目的，在於解決習知輕便型打氣筒將打氣筒收縮成小體積時，因為推桿與氣缸蓋之間的間隙而產生握把晃動發出聲音的問題。SUMMARY OF THE INVENTION An object of the present invention is to solve the problem that when a conventional portable air pump contracts a small volume into a small volume, a gap between the push rod and the cylinder head causes a shock of the grip.
本發明的特徵，是在輕便型打氣筒的氣缸設置一第一定位元件，以及在握把設置一第二定位元件，當不使用打氣筒而將打氣筒收縮成最小體積時，藉由該第一定位元件與第二定位元件彼此緊迫配合定位而消除間隙，從而避免握把相對於氣缸晃動的問題。The present invention is characterized in that a first positioning member is disposed in the cylinder of the portable pump, and a second positioning member is disposed on the grip, and the first cylinder is contracted to a minimum volume without using the inflator, by the first The positioning element and the second positioning element are positioned in close cooperation with each other to eliminate the gap, thereby avoiding the problem of the grip being shaken relative to the cylinder.
本發明的另一特徵，可以在輕便型打氣筒的氣缸設置一第二定位元件，以及在握把設置一第一定位元件，當不使用打氣筒而將打氣筒收縮成最小體積時，藉由該第一定位元件與第二定位元件彼此緊迫配合定位而消除間隙，從而避免握把相對於氣缸晃動的問題。According to another feature of the present invention, a second positioning member can be disposed in the cylinder of the portable pump, and a first positioning member is disposed on the grip, and when the pump is contracted to a minimum volume without using the inflator, The first positioning element and the second positioning element are positioned in close cooperation with each other to eliminate the gap, thereby avoiding the problem of the handle being shaken relative to the cylinder.
本發明的技術手段，包括一具有氣嘴的氣缸、一具有活塞並組合於氣缸內的推桿、一組合於該推桿一端的握把；所述氣缸或握把設置一第一定位元件，以及握把或氣缸設置一第二定位元件，該第一定位元件具有彈性夾持結構，第二定位元件具有可和所述彈性夾持結構緊迫配合的突出部；藉以在不使用打氣筒而將氣缸與握把相對軸向位移至適當位置時，使該第一定位元件與第二定位元件彼此緊迫配合而定位，避免握把相對於氣缸晃動。The technical means of the present invention comprises a cylinder having a gas nozzle, a push rod having a piston combined in the cylinder, and a grip assembled at one end of the push rod; the cylinder or the grip is provided with a first positioning element, And a second positioning element is disposed on the grip or the cylinder, the first positioning element has an elastic clamping structure, and the second positioning element has a protrusion that can be tightly engaged with the elastic clamping structure; thereby, without using the inflator When the cylinder and the grip are axially displaced relative to each other, the first positioning element and the second positioning element are positioned in close cooperation with each other to prevent the grip from shaking relative to the cylinder.
一種選擇，本發明的第一定位元件的彈性夾持結構具有一筒體，該筒體的側壁設有複數溝槽，藉由溝槽使筒體的側壁具備徑向的彈性，進而使第二定位元件的突出部可以順利進入筒體的內壁面並產生緊迫配合。In an alternative, the elastic clamping structure of the first positioning component of the present invention has a cylindrical body, and the side wall of the cylindrical body is provided with a plurality of grooves, and the sidewall of the cylindrical body has radial elasticity by the groove, thereby making the second The projection of the positioning element can smoothly enter the inner wall surface of the cylinder and create a tight fit.
本發明將第一定位元件與氣缸組合的方式，可以在氣缸的開口內徑設置第一內螺紋，第一定位元件則設置用來和該第一內螺紋螺合的第二外螺紋。The invention combines the first positioning element with the cylinder in such a manner that a first internal thread can be provided in the inner diameter of the opening of the cylinder, and the first positioning element is provided with a second external thread for screwing with the first internal thread.
本發明的握把為一管狀體，該管狀體的內部設有一第二內螺紋與一第三內螺紋，推桿的第一端設置用來螺合該第二內螺紋的第一外螺紋，第二定位元件設有用來螺合該第三內螺紋的第三外螺紋，第一定位元件可以進入該握把的內部，進而和該第二定位元件產生緊迫配合而定位。The grip of the present invention is a tubular body having a second internal thread and a third internal thread. The first end of the push rod is provided with a first external thread for screwing the second internal thread. The second positioning element is provided with a third external thread for screwing the third internal thread, and the first positioning element can enter the interior of the grip and thereby be positioned in a tight fit with the second positioning element.
本發明的第二定位元件設有提供推桿穿過的第二中心孔，以及在第二定位元件的突出部端部周緣設置導角，藉由導角使得突出部可以更順利地進入第一定位元件的筒體內壁面產生緊迫配合。The second positioning member of the present invention is provided with a second central hole through which the push rod is provided, and a lead angle is provided at the periphery of the protruding end portion of the second positioning member, so that the protruding portion can smoothly enter the first portion by the lead angle The inner wall surface of the positioning element creates a tight fit.
本發明將第一定位元件組合於握把的技術手段，是在握把設置一第四內螺紋，藉由第一定位元件之第二外螺紋和該第四內螺紋螺合而使第一定位元件與握把組合固定。The technical means for combining the first positioning component with the grip is to provide a fourth internal thread on the grip, and the first positioning component is screwed by the second external thread of the first positioning component and the fourth internal thread. Fixed in combination with the grip.
本發明將第二定位元件組合於氣缸的技術手段，則是將第二定位元件的第三外螺紋與氣缸的第一內螺紋螺合。The technical means for combining the second positioning element with the cylinder of the present invention is to screw the third external thread of the second positioning element with the first internal thread of the cylinder.
和習知的輕便型打氣筒相較，本發明藉由精簡的元件與結構達成了讓打氣筒收縮成小體積後避免晃動的效果，為一甚具進步性之改良結構。Compared with the conventional portable air pump, the present invention achieves an improved and improved structure by reducing the amount of components and structures to reduce the sloshing of the pump to a small volume.
以下配合圖式對本發明的實施方式做更詳細的說明，俾使熟習該項領域之人士在研讀本說明書後能據以實施。The embodiments of the present invention will be described in more detail below with reference to the drawings, so that those skilled in the art can implement the present invention after studying the present specification.
第一圖顯示本發明應用於輕便型打氣筒之定位結構的第一較佳實施例，其包括有一氣缸1、一推桿2、一握把3、一第一定位元件4與一第二定位元件5；其中，氣缸1為一管體，其第一端(以下元件的相同方向均稱為第一端，相對的另一方向則稱第二端)形成一開口，從開口延伸至氣缸裏端一適當距離設置第一內螺紋13，氣缸1的第二端設置一頭部11，頭部11設有一用來連接被充氣物(圖中未顯示)之充氣嘴以進行充氣的氣嘴12。The first figure shows a first preferred embodiment of the present invention for a positioning structure of a portable air pump, comprising a cylinder 1, a push rod 2, a grip 3, a first positioning member 4 and a second positioning. Element 5; wherein cylinder 1 is a tube body, the first end (the same direction of the following elements is referred to as the first end, and the opposite direction is referred to as the second end) forms an opening extending from the opening into the cylinder The first internal thread 13 is disposed at an appropriate distance, and the second end of the cylinder 1 is provided with a head portion 11. The head portion 11 is provided with a gas nozzle 12 for connecting an inflator (not shown) for inflation. .
推桿2具有適當的長度，其第一端的外徑設置第一外螺紋22，第二端設置一活塞21，活塞21的外徑設置至少一活塞環211，推桿2的第二端連同活塞21組合於氣缸1內徑，並藉由活塞環211接觸於氣缸內壁而產生適當程度的氣密效果，俾在活塞21於氣缸內軸向往復運動時將氣體推出氣嘴12，以及將氣缸外的氣體吸入氣缸內。The push rod 2 has a suitable length, the outer diameter of the first end is provided with a first external thread 22, the second end is provided with a piston 21, the outer diameter of the piston 21 is provided with at least one piston ring 211, and the second end of the push rod 2 is provided The piston 21 is combined with the inner diameter of the cylinder 1 and is brought into contact with the inner wall of the cylinder by the piston ring 211 to generate an appropriate degree of airtightness. When the piston 21 reciprocates axially in the cylinder, the gas is pushed out of the nozzle 12, and Gas outside the cylinder is drawn into the cylinder.
配合參閱第一圖與第二A圖，握把3為一管狀體，其第一端為封閉，第二端具有開口，握把3的內部底面設置用來螺合推桿2之第一外螺紋22的第二內螺紋31，以及接近內部底面的內徑設置第三內螺紋32。Referring to the first figure and the second figure A, the grip 3 is a tubular body, the first end of which is closed, the second end has an opening, and the inner bottom surface of the grip 3 is arranged to screw the first outer part of the push rod 2 The second internal thread 31 of the thread 22 and the inner diameter near the inner bottom surface are provided with a third internal thread 32.
第一圖與第二A圖顯示本發明的第一定位元件4之較佳實施例，是在其本體的第一端具有一彈性夾持結構，相對的第二端外徑具有第二外螺紋42；所述彈性夾持結構是在第一定位元件4的第一端形成一具有內壁面412的筒體41，筒體41的側壁設置複數個軸向延伸且環周分佈的溝槽411，藉由溝槽411使得筒體41剛性的側壁因為環周不連續而具有適當的徑向彈性；第一定位元件4的中央還設有一提供推桿2穿過的第一中心孔40。第一定位元件4藉由第二外螺紋42螺合於氣缸1的第一內螺紋13而組合固定於氣缸1，並使推桿2穿出第一中心孔40。第一定位元件4的外徑則小於握把3的內徑，使得第一定位元件4可以進入握把3內部。The first and second drawings show a preferred embodiment of the first positioning member 4 of the present invention having a resilient clamping structure at a first end of the body and a second external thread having an outer diameter opposite the second end. 42. The elastic clamping structure is formed on the first end of the first positioning component 4 with a cylinder 41 having an inner wall surface 412. The sidewall of the cylinder 41 is provided with a plurality of axially extending and circumferentially distributed grooves 411. The rigid side wall of the cylinder 41 by the groove 411 has appropriate radial elasticity due to the circumferential discontinuity; the first positioning member 4 is also provided with a first central hole 40 through which the push rod 2 passes. The first positioning element 4 is fixedly fixed to the cylinder 1 by the second external thread 42 being screwed to the first internal thread 13 of the cylinder 1, and the push rod 2 is passed out of the first central hole 40. The outer diameter of the first positioning element 4 is then smaller than the inner diameter of the grip 3 so that the first positioning element 4 can enter the interior of the grip 3.
第一圖與第二A圖顯示本發明的第二定位元件5之較佳實施例，是在其本體的第一端外徑設置第三外螺紋52，以及在相對的第二端設置一環周形成導角531的突出部53，突出部53的外徑略大於第一定位元件4之筒體41的內徑，突出部53與第三外螺紋52之間具有一更大外徑的凸緣54，以及在第二定位元件5的中央設有一提供推桿2穿過的第二中心孔51；推桿2的第一端係穿過第一定位元件4的第一中心孔40與第二定位元件5的第二中心孔51後，再使第一外螺紋22螺合於握把3內的第二內螺紋31，然後使第二定位元件5的第三外螺紋52螺合於握把3內的第三內螺紋32，直到凸緣54抵住握把3內部的內緣，即完成整個打氣筒之主要元件的組合。The first and second drawings show a preferred embodiment of the second positioning member 5 of the present invention, wherein a third external thread 52 is provided on the outer diameter of the first end of the body, and a circumference is provided at the opposite second end. Forming a projection 53 of the lead angle 531, the outer diameter of the projection 53 is slightly larger than the inner diameter of the cylinder 41 of the first positioning member 4, and the flange having a larger outer diameter between the projection 53 and the third outer thread 52 And a second central hole 51 through which the push rod 2 is passed in the center of the second positioning member 5; the first end of the push rod 2 passes through the first central hole 40 and the second of the first positioning element 4 After the second central hole 51 of the positioning member 5, the first external thread 22 is screwed into the second internal thread 31 in the grip 3, and then the third external thread 52 of the second positioning member 5 is screwed to the grip. The third internal thread 32 in 3, until the flange 54 is against the inner edge of the interior of the grip 3, completes the combination of the main components of the entire pump.
參閱第二B圖至第三B圖所示，藉由前述本發明的定位結構，當不使用打氣筒而將握把3相對於氣缸1軸向移動而縮短兩者之間的距離最小時(即活塞21位於氣缸1內的下死點時)，第二定位元件5的突出部53恰好進入第一定位元件4的筒體41內壁面412，由於突出部53的外徑略大於筒體41的內徑，且筒體41側壁在徑向具有彈性，因而在突出部53進入筒體41內徑時會將筒體41的內壁面412往外擠壓擴張而形成緊迫配合，藉以消除氣缸1內壁與推桿2之間的間隙，得以避免握把3晃動。Referring to FIGS. 2B to 3B, by the above-described positioning structure of the present invention, when the grip 3 is axially moved relative to the cylinder 1 without using a pump, the distance between the two is minimized ( That is, when the piston 21 is located at the bottom dead center in the cylinder 1, the protruding portion 53 of the second positioning member 5 just enters the inner wall surface 412 of the cylindrical body 41 of the first positioning member 4, since the outer diameter of the protruding portion 53 is slightly larger than the cylindrical body 41. The inner diameter of the cylinder 41 is elastic in the radial direction, so that when the protruding portion 53 enters the inner diameter of the cylinder 41, the inner wall surface 412 of the cylinder 41 is squeezed outward to form a tight fit, thereby eliminating the inside of the cylinder 1. The gap between the wall and the push rod 2 is to avoid shaking of the grip 3.
第四圖至第六圖顯示本發明應用於輕便型打氣筒之定位結構的第二較佳實施例，其同樣包括有相同於前述第一實施例的一氣缸1、一推桿2、一握把3、一第一定位元件4與一第二定位元件5；惟，和第一實施例不同之處，是將第一定位元件4改為組合在握把3的第二端，而第二定位元件5則組合於氣缸1的第一端。該第一定位元件4與握把3的組合結構，是在握把3第二端的內徑設置一第四內螺紋33，再將第一定位元件4的第二外螺紋42螺合於第四內螺紋33；由於第一定位元件4是組合在握把3的第二端，因此第一定位元件4的外徑必須大於握把3的管狀體內徑。該第二定位元件5與氣缸1的組合方式，則是將第二定位元件5的第三外螺紋52螺合於氣缸1的第一內螺紋13，直到凸緣54抵住氣缸1第一端的端緣。藉由前述的第二實施例本發明的定位結構，當不使用打氣筒而將握把3相對於氣缸1軸向移動而縮短兩者之間的距離最小時(即活塞21位於氣缸1內的下死點時)，第二定位元件5的突出部53恰好進入第一定位元件4的筒體41內壁面412，致使突出部53將筒體41的側壁往外擠壓擴張而形成緊迫配合，從而消除氣缸1內壁與推桿2之間的間隙，得以避免握把3晃動。4 to 6 show a second preferred embodiment of the positioning structure of the present invention applied to a portable air pump, which also includes a cylinder 1, a push rod 2, a grip similar to the first embodiment described above. 3, a first positioning element 4 and a second positioning element 5; however, the difference from the first embodiment is that the first positioning element 4 is instead combined at the second end of the grip 3, and the second positioning Element 5 is combined with the first end of cylinder 1. The combination of the first positioning component 4 and the grip 3 is such that a fourth internal thread 33 is disposed on the inner diameter of the second end of the grip 3, and the second external thread 42 of the first positioning component 4 is screwed into the fourth inner portion. Thread 33; Since the first positioning element 4 is combined at the second end of the grip 3, the outer diameter of the first positioning element 4 must be larger than the inner diameter of the tubular body of the grip 3. The second positioning element 5 is combined with the cylinder 1 by screwing the third external thread 52 of the second positioning element 5 to the first internal thread 13 of the cylinder 1 until the flange 54 is against the first end of the cylinder 1. The edge of the edge. With the positioning structure of the present invention of the second embodiment described above, when the grip 3 is axially moved relative to the cylinder 1 without using the pump, the distance between the two is shortened (i.e., the piston 21 is located in the cylinder 1). At the bottom dead center), the protruding portion 53 of the second positioning member 5 just enters the inner wall surface 412 of the cylindrical body 41 of the first positioning member 4, so that the protruding portion 53 presses and expands the side wall of the cylindrical body 41 outward to form a tight fit, thereby The gap between the inner wall of the cylinder 1 and the push rod 2 is eliminated to avoid shaking of the grip 3.
以上所述者僅為用以解釋本發明之較佳實施例，並非企圖據以對本發明作任何形式上之限制，是以，凡有在相同之發明精神下所作有關本發明之任何修飾或變更，皆仍應包括在本發明意圖保護之範疇。The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, and any modifications or alterations to the present invention made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.
1．．．氣缸1. . . cylinder
11．．．頭部11. . . head
12．．．氣嘴12. . . Gas nozzle
13．．．第一內螺紋13. . . First internal thread
2．．．推桿2. . . Putt
21．．．活塞twenty one. . . piston
211．．．活塞環211. . . Piston ring
22．．．第一外螺紋twenty two. . . First external thread
3．．．握把3. . . Grip
31．．．第二內螺紋31. . . Second internal thread
32．．．第三內螺紋32. . . Third internal thread
33．．．第四內螺紋33. . . Fourth internal thread
4．．．第一定位元件4. . . First positioning element
40．．．第一中心孔40. . . First center hole
41．．．筒體41. . . Cylinder
411．．．溝槽411. . . Trench
412．．．內壁面412. . . Inner wall
42．．．第二外螺紋42. . . Second external thread
5．．．第二定位元件5. . . Second positioning element
51．．．第二中心孔51. . . Second center hole
52．．．第三外螺紋52. . . Third external thread
53．．．突出部53. . . Protruding
531．．．導角531. . . Leading angle
54．．．凸緣54. . . Flange
第一圖為顯示本發明第一實施例主要元件組合關係之立體分解圖。The first figure is an exploded perspective view showing the main component combination relationship of the first embodiment of the present invention.
第二A圖為顯示本發明第一實施例結構，其握把尚未定位時之狀態之平面剖視圖。Fig. 2A is a plan sectional view showing a state in which the grip of the first embodiment of the present invention is not positioned.
第二B圖為顯示本發明第一實施例結構，其握把尚未定位時之狀態之局部立體剖視圖。Fig. 2B is a partial perspective cross-sectional view showing the state of the first embodiment of the present invention, the state in which the grip is not positioned.
第三A圖為顯示本發明第一實施例結構，其握把定位後之狀態之平面剖視圖。Fig. 3A is a plan sectional view showing the state in which the grip of the first embodiment of the present invention is positioned.
第三B圖為顯示本發明第一實施例結構，其握把定位後之狀態之局部立體剖視圖。Figure 3B is a partial perspective cross-sectional view showing the structure of the first embodiment of the present invention with its grip positioned.
第四圖為顯示本發明第二實施例主要元件組合關係之立體圖。The fourth figure is a perspective view showing the main component combination relationship of the second embodiment of the present invention.
第五圖為顯示本發明第二實施例結構之立體分解圖。Fig. 5 is an exploded perspective view showing the structure of the second embodiment of the present invention.
第六圖為顯示本發明第二實施例結構，其握把定位後之狀態之立體圖。Fig. 6 is a perspective view showing the structure of the second embodiment of the present invention with the grip positioned.
1．．．氣缸1. . . cylinder
11．．．頭部11. . . head
12．．．氣嘴12. . . Gas nozzle
13．．．第一內螺紋13. . . First internal thread
2．．．推桿2. . . Putt
21．．．活塞twenty one. . . piston
211．．．活塞環211. . . Piston ring
22．．．第一外螺紋twenty two. . . First external thread
3．．．握把3. . . Grip
31．．．第二內螺紋31. . . Second internal thread
32．．．第三內螺紋32. . . Third internal thread
4．．．第一定位元件4. . . First positioning element
41．．．筒體41. . . Cylinder
412．．．內壁面412. . . Inner wall
42．．．第二外螺紋42. . . Second external thread
52．．．第三外螺紋52. . . Third external thread
53．．．突出部53. . . Protruding
531．．．導角531. . . Leading angle
54．．．凸緣54. . . Flange
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100113804A TWI434997B (en) | 2011-04-20 | 2011-04-20 | The positioning structure of light type air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100113804A TWI434997B (en) | 2011-04-20 | 2011-04-20 | The positioning structure of light type air pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201243155A TW201243155A (en) | 2012-11-01 |
| TWI434997B true TWI434997B (en) | 2014-04-21 |
Family
ID=48093774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100113804A TWI434997B (en) | 2011-04-20 | 2011-04-20 | The positioning structure of light type air pump |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI434997B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216412B (en) * | 2012-01-20 | 2015-08-19 | 双余实业有限公司 | The inside and outside telescopic pump of twin-tub |
-
2011
- 2011-04-20 TW TW100113804A patent/TWI434997B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW201243155A (en) | 2012-11-01 |
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| MM4A | Annulment or lapse of patent due to non-payment of fees |