TWI652406B - Portable air pump - Google Patents

Abstract

The invention provides an inflator comprising a pumping group, a head, a pressure gauge and a gas nozzle. The pumping unit has a cylinder and a piston rod, and the cylinder and the piston rod can generate relative motion to compress the air in the cylinder. The head is rotatably disposed at one end of the pumping group, and the head includes a pocket. The pressure gauge is placed in the pocket. The gas nozzle is disposed at one end of the head and is adapted to connect the object to be inflated. Thereby, the pressure gauge can be arbitrarily rotated 360 degrees relative to the pumping group during the air pumping operation to facilitate the interpretation of the pressure value.

Description

Portable pump

The present invention relates to a portable inflator, and more particularly to a portable inflator having a 360 degree rotary pressure gauge.

Generally, the portable inflator is convenient for carrying, and generally has a compact appearance. In contrast, the inflator has a compact appearance and inevitably loses the convenience in pumping work. For example, a portable inflator usually does not have a pressure gauge capable of interpreting a pressure value, and a nozzle of a portable inflator is not easily connected to an object to be inflated by an external object such as a spoke spoke, or a portable type with a pressure gauge. After the gas cylinder is connected to the object to be inflated, it is difficult to interpret the pressure value.

The prior art paragraphs are only intended to aid in understanding the present invention, and thus the disclosure of the prior art paragraphs may contain some conventional techniques that are not known to those of ordinary skill in the art. The matters disclosed in the prior art paragraphs do not represent the subject matter or the problems to be solved by one or more embodiments of the present invention, which are known or recognized by those of ordinary skill in the art prior to the present application.

The invention provides a portable pump which can be connected to an inflated object after the nozzle is connected. Read the pressure value displayed on the pressure gauge.

The invention provides a portable inflator comprising a pumping group, a head, a pressure gauge and a gas nozzle. The pumping group includes a cylinder and a piston rod, and the cylinder and the piston rod can generate relative motion to compress the air in the cylinder. The head is rotatably disposed at one end of the pumping group, and the head includes a pocket. The pressure gauge is placed in the pocket. The gas nozzle is disposed at one end of the head and is adapted to connect the object to be inflated.

In an embodiment of the invention, the portable pump further includes a gas pipe, the gas pipe is movably disposed in the piston rod, and one end of the gas pipe is connected to the gas nozzle, and the gas nozzle is detachably connected to one end of the head.

In an embodiment of the invention, the piston rod has a connecting portion connected to the head, a piston portion opposite to the connecting portion, an air passage connecting the air tube, a first air hole radially extending through the piston rod and communicating with the receiving groove, and being disposed on the first air hole A one-way valve of the piston portion, the air passage unidirectionally communicates with the cylinder. When the cylinder and the piston rod move relative to each other, the piston portion compresses the air in the cylinder, and the compressed air enters the pocket through the first air hole and enters the air nozzle through the air passage through the air passage.

In an embodiment of the invention, the portable pump further includes a joint plug disposed between the head and the piston rod, the joint plug includes a second air hole corresponding to the first air hole, and the second air hole respectively communicates with the first air hole With the tank.

In an embodiment of the invention, the head includes a first perforation extending through the head, the first perforation having a first segment, a second segment, and a third segment, the coupling plug including a second perforation through the coupling plug, the trachea The connecting portion of the piston rod is movably disposed in the first section and the piston rod is connected to the second section, and the piston rod is disposed through the second through hole of the combined plug member, and the combined plug member is disposed in the third section.

In an embodiment of the invention, the piston rod is provided with a first thread at the connecting portion, and the first through hole is provided with a second thread detachably connecting the first thread on the inner circumferential surface of the second portion.

In an embodiment of the invention, the portable pump further includes at least one screw, at least A screw member is threaded through the coupling member and detachably coupled to the head.

In an embodiment of the invention, the pressure gauge includes an active member that is urged by the compressed air to move relative to the pocket, a first follower coupled to the active member, an elastic member biasing the first driven member, and a meshing portion a second follower of the follower, a pointer connected to the second follower, and a dial between the second follower and the pointer. When the compressed air that enters the pocket through the first air hole pushes the active member, the active member drives the first follower and compresses the elastic member, and the first driven member drives the second driven member to rotate, so that the pointer rotates on the dial to indicate Pressure value.

In an embodiment of the invention, the resilient member is a spring.

In an embodiment of the invention, the cross-sectional shape of the combined plug member is circular.

Based on the above, in the above embodiment of the present invention, the head is rotatably disposed at one end of the pumping group, and the pressure gauge is disposed at the pocket of the head, so that the pressure gauge can be arbitrarily 360 degrees with respect to the pumping group during the air pumping operation. Rotate for easy interpretation of pressure values.

The above described features and advantages of the invention will be apparent from the following description.

10‧‧‧Air pumping group

11‧‧‧ cylinder

12‧‧‧ piston rod

121‧‧‧Connecting Department

122‧‧‧Piston Department

123‧‧‧ airway

124‧‧‧First air hole

125‧‧‧ check valve

126‧‧‧first thread

20‧‧‧ head

21‧‧‧ 容容

22‧‧‧First perforation

221‧‧‧ first paragraph

222‧‧‧ second paragraph

223‧‧‧ third paragraph

224‧‧‧second thread

30‧‧‧ Pressure gauge

31‧‧‧Active parts

32‧‧‧First follower

33‧‧‧Flexible parts

34‧‧‧Second follower

35‧‧‧ pointer

36‧‧‧ dial

40‧‧‧ gas nozzle

50‧‧‧ trachea

60‧‧‧Combined plugs

61‧‧‧second vent

62‧‧‧Second perforation

70‧‧‧ screw

1 is a perspective view of the portable pump of the present invention, showing the pressure gauge in a first position.

Figure 2 is an exploded view of the portable pump of Figure 1.

Figure 3 is a cross-sectional view of the portable pump of Figure 1.

Figure 4 is a continuation of Figure 3 showing the air tube moving relative to the piston rod and the air nozzle being disengaged from the head.

Figure 5 is another perspective view of the portable pump of the present invention, showing the pressure gauge in the second position.

The foregoing and other technical aspects, features, and advantages of the present invention will be apparent from the description of the appended claims. The directional terms mentioned in the following embodiments, such as up, down, front, back, left, right, etc., are only referred to the directions of the accompanying drawings. Therefore, the directional terms are used for illustration only and are not intended to limit the invention.

Referring to FIGS. 1 to 5 , the portable pump of the present invention includes a pumping unit 10 , a head 20 , a pressure gauge 30 , a nozzle 40 , a gas pipe 50 , a coupling plug 60 , and at least one screw 70 . The head 20 is disposed at one end of the air pumping group 10 in a 360-degree rotation and includes a pocket 21 in which the pressure gauge 30 is disposed. The air nozzle 40 is disposed at one end of the head 20 and is adapted to connect the object to be inflated.

The pumping unit 10 includes a cylinder 11 and a piston rod 12, and the cylinder 11 and the piston rod 12 can generate relative motion to compress the air in the cylinder 11. The piston rod 12 has a connecting portion 121 connected to the head portion 20, a piston portion 122 opposite to the connecting portion 121, an air passage 123 connecting the air tube 50, and a first radial passage through the piston rod 12 and communicating with the receiving groove 21. The air hole 124, a one-way valve 125 disposed on the piston portion 122, and a first thread 126 disposed on the connecting portion 121. The one-way valve 125 can be a valve plate that allows the air passage 123 to unidirectionally communicate with the cylinder 11.

The head 20 includes a first through hole 22 extending through the head 20. The first through hole 22 has a first section 221, a second section 222, and a third section 223. The first through hole 22 is provided with a second thread 224 detachably connected to the first thread 126 on the inner circumferential surface of the second section 222 such that the connecting portion 121 of the piston rod 12 is detachably coupled to the second section 222.

The pressure gauge 30 includes an active member 31 that is urged by the compressed air to move relative to the pocket 21, a first follower 32 coupled to the active member 31, and an elastic member 33 biasing the first follower 32. A second follower 34 that engages the first follower 32, a pointer 35 that is coupled to the second follower 34, and a dial 36 between the second follower 34 and the pointer 35. The elastic member 33 can be a spring.

The air tube 50 is movably disposed in the first section 221 of the first through hole 22 and the piston rod 12. One end of the air tube 50 is connected to the air nozzle 40. The air nozzle 40 is detachably connected to the head corresponding to the movement of the air tube 50 relative to the piston rod 12. 20 end.

The coupling plug 60 is disposed between the head 20 and the piston rod 12. In the present embodiment, the coupling plug 60 is disposed by the at least one screw 70 passing through the coupling plug 60 and detachably connected to the head 20. In the third section 223 of the first perforation 22, and the cross-sectional shape of the combined plug 60 is circular. The joint plug 60 includes a second air hole 61 corresponding to the first air hole 124 and a second through hole 62 penetrating the joint plug 60. The second air holes 61 communicate with the first air holes 124 and the receiving holes 21, respectively. The piston rod 12 is disposed through the second through hole 62.

As shown in FIGS. 1 to 3, the pressure gauge 30 is in the first position, the air nozzle 40 is connected to one end of the head 20, and the air tube 50 is disposed in the first section 221 of the first through hole 22 and the piston rod 12 without being exposed.

As shown in FIG. 4, when a pumping operation is to be performed, the user can apply force to the air nozzle 40, disengage the air nozzle 40 from the head 20, and pull out the air tube 50 so that the air tube 50 is opposite the first section 221 of the first through hole 22. Movement with the piston rod 12 allows the air nozzle 40 to be easily connected to an object to be inflated (not shown).

The user can hold the head 20 in one hand, the other hand applies force to the cylinder 11, and the cylinder 11 and the piston rod 12 move relative to each other. The piston portion 122 compresses the air in the cylinder 11, and the compressed air passes through the air passage 123 through the first air hole respectively. The second air hole 61 enters the cavity 21 and enters the air nozzle 40 through the air pipe 50 and is filled with the object to be inflated.

When the compressed air that enters the pocket 21 through the first air hole 124 and the second air hole 61 pushes the driving member 31, the driving member 31 drives the first follower 32 and compresses the elastic member 33, and the first driven member 32 drives the second driven member. The member 34 is rotated to rotate the pointer 35 on the dial 36 to indicate the pressure value.

As shown in FIG. 5, the user can rotate the head 20 according to the use condition, and the head 20 can be arbitrarily rotated relative to the pumping group 10, and the pressure gauge 30 accommodated in the pocket 21 can be arbitrarily 360 with respect to the pumping group 10. The degree of rotation changes from the first position to the second position, allowing the user to easily interpret the pressure value displayed by the pressure gauge 30.

In summary, it can be concluded that the portable pump of the present invention has the following advantages:

1. The user can apply force to the air nozzle 40, disengage the air nozzle 40 from the head 20, and pull out the air tube 50 to move the air tube 50 relative to the first section 221 of the first through hole 22 and the piston rod 12, and let the air nozzle 40 It is easy to connect the objects to be inflated without being obstructed by external objects such as spoke spokes.

2. The user can rotate the head 20 according to the use condition, so that the head 20 is arbitrarily rotated relative to the pumping group 10, and the pressure gauge 30 accommodated in the pocket 21 can be arbitrarily rotated 360 degrees relative to the pumping group 10 The first position is shifted to the second position to allow the user to easily interpret the pressure value displayed by the pressure gauge 30.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are still It is within the scope of the patent of the present invention. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first" and "second" mentioned in the specification or the scope of the patent application are used only to name the elements or distinguish different embodiments or ranges, and are not intended to limit the number of components. Upper or lower limit.

Claims (9)

A portable pump includes: a pumping unit including a cylinder and a piston rod, the cylinder and the piston rod can generate relative motion to compress air in the cylinder, the piston rod has a radial a first air hole extending through the piston rod; a head rotatably disposed at one end of the air pumping group, the head portion including a receiving groove, the receiving groove communicating with the first air hole; a pressure gauge, the pressure gauge Provided in the receiving slot; a combined plug member disposed between the head and the piston rod and including a pair of second air holes corresponding to the first air hole, the second air holes respectively communicating with the first air hole a pocket; and a gas nozzle disposed at one end of the head and adapted to connect the object to be inflated. The portable pump according to claim 1, further comprising: an air pipe, the air pipe is movably disposed in the piston rod, one end of the air pipe is connected to the air nozzle, and the air nozzle is detachably connected to the head One end. The portable pump according to claim 2, wherein the piston rod has a connecting portion connected to the head, a piston portion opposite to the connecting portion, an air passage communicating with the air tube, and a piston portion disposed at the piston portion a one-way valve, the air passage unidirectionally communicates with the cylinder; when the cylinder and the piston rod generate relative motion, the piston portion compresses air in the cylinder, and the compressed air enters the volume through the first air hole through the air passage respectively The trough enters the gas nozzle through the gas pipe. The portable inflator of claim 3, wherein the head includes a first perforation extending through the head, the first perforation having a first segment, a second segment and a third segment, the bonding plug The device includes a second through hole penetrating the combined plug member, the air pipe is movably disposed in the first segment and the piston rod, the connecting portion of the piston rod is coupled to the second segment, and the piston rod is disposed through The second through hole is combined with the plug, and the joint plug is disposed in the third segment. The portable pump according to claim 4, wherein the piston rod is provided with a first thread on the connecting portion, and the first through hole is provided on the inner circumferential surface of the second portion to be detachably connected to the first thread. Second thread. The portable inflator of claim 4, further comprising: at least one screw member, the at least one screw member is threaded through the coupling plug and detachably coupled to the head portion. The portable pump according to any one of claims 1 to 6, wherein the pressure gauge comprises an active member that is movable by the compressed air to move relative to the receiving slot, and a first driven connected to the active member. a member, an elastic member biasing the first follower, a second follower engaging the first follower, a pointer connected to the second follower, and a second follower a dial between the pointer; when the compressed air entering the pocket pushes the active member, the active member drives the first follower and compresses the elastic member, the first driven member drives the second driven member The piece rotates to cause the pointer to rotate on the dial to indicate a pressure value. The portable inflator of claim 7, wherein the elastic member is a spring. The portable inflator of any one of claims 1 to 6, wherein the combined plug member has a circular cross-sectional shape.