JP3061767U - Air pump - Google Patents

Abstract

(57) [Summary] [Problem] To make a decorative body protrude and retract from the cylindrical cylinder in accordance with the reciprocating motion of the piston rod, add interest to the extremely mechanical simple reciprocating motion, maintain interest, and forget fatigue. An air pump is provided. An air pump (1) includes a cylindrical cylinder (2) and a piston rod (11) slidably fitted in the cylindrical cylinder (2). The piston rod 11 is formed of a permeable synthetic resin, and is formed in a cylindrical shape having a bottom wall 12 provided on a lower end side. Piston rod 11
A handle 13 is attached to the upper end, and a sealing member 15 that comes into sliding contact with the inner surface of the cylindrical cylinder 2 in an airtight manner is attached to the lower end. In the piston rod 11, the decoration 2
1 is provided movably in the axial direction. A hose 30 for ejecting compressed air is connected to a lower portion of the cylindrical cylinder 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an air pump for injecting air into bicycle tires, ball balls, and the like.

[0002]

[Prior art]

 2. Description of the Related Art A conventional air pump includes a cylindrical cylinder, a metal piston rod having a handle attached to an upper end, and a sealing member attached to the inner surface of the cylindrical cylinder in an airtight sliding manner at a lower end. Further, the lower end of the cylindrical cylinder was connected to a base end of a hose for ejecting compressed air generated by the downward movement of the piston rod from an ejection base at the distal end.

In the above-described conventional air pump, when the handle is gripped and the piston rod is pulled up, air is taken into the cylindrical cylinder, and when the piston rod is pushed down, the air in the cylindrical cylinder is compressed. The air blows out from the spout at the end of the hose. When a crocodile clip-type adapter for a bicycle is attached to this spout, it is attached to the valve of the bicycle tire, and when an injection needle type adapter is attached to the spout, it is inserted into the suction port of the game ball. Attached.

[0004]

[Problems to be solved by the invention]

 The above-mentioned air pump injects air into the object to be injected by reciprocating the piston rod and inflates the object to be injected.However, the reciprocating operation at the time of the injection is a very simple mechanical operation, which is interesting. There was a problem of chipping and fatigue immediately. In addition, the conventional air pump can change the adapter according to the object to be injected, but has a problem that it is easily lost because there is no place to store an unused adapter.

The present invention was devised in view of the above-mentioned problems, and in accordance with the reciprocating motion of the piston rod, the decorative body is protruded and retracted from the inside of the cylindrical cylinder, and the mechanically simple reciprocating motion is interesting. It is a first object of the present invention to provide a pneumatic pump that can be added to maintain interest and forget fatigue. It is a second object of the present invention to provide an air pump in which an accommodating device for accommodating an unused adapter is attached to a hose so that the adapter is hardly lost.

[0006]

[Means for Solving the Problems]

 The air pump according to the first aspect of the present invention has the following means to achieve the first object. (A) It consists of a cylindrical cylinder and a piston rod slidably fitted in the cylindrical cylinder. (B) The piston rod has permeability and is formed in a cylindrical shape with a bottom wall provided on the lower end side. (C) The piston rod shall have a handle attached to the upper end, and a sealing member attached to the inner surface of the cylindrical cylinder in airtight sliding contact with the lower end. (D) The lower end of the cylindrical cylinder is connected to the base end of a hose that blows out compressed air generated by the downward movement of the piston rod from the spout provided at the tip. (E) A decorative body is provided in the piston rod so as to be vertically movable.

In order to achieve the first object, the air pump according to the second aspect of the present invention is provided with an elastic member below the decorative body in addition to the above means.

[0008] In the air pump according to the third aspect of the present invention, in order to achieve the first object, in addition to the above means, the decorative body is provided with a sounding body.

In order to achieve the second object, the air pump according to the invention according to claim 4 includes, in addition to the above-described means, a housing for accommodating an adapter which is detachably attached to a spout base. Is provided.

[0010]

[Embodiment of the invention]

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall view showing an embodiment of an air pump according to the present invention. FIG. 2 is an explanatory diagram illustrating the operation of the air pump. FIG. 3 is an overall view showing another embodiment of the air pump according to the present invention. FIG. 4 is an explanatory view of a housing of the adapter. FIG. 5 is an enlarged view of a main part of the air pump.

The air pump 1 according to the first aspect comprises a cylindrical cylinder 2 and a piston rod 11 slidably fitted in the cylindrical cylinder 2. The cylindrical cylinder 2 is formed of a synthetic resin, metal, or the like, and has a fixed base 3 attached to a lower end so as to be able to maintain a standing state. The footrests 5, 5 are formed on the fixed base 3 so as to protrude on both sides. At the upper part of the cylindrical cylinder 2, a male screw portion 6 to which a fixing ring 7 described later is screwed is formed.

The piston rod 11 is formed of a permeable synthetic resin, and is formed in a cylindrical shape having a bottom wall 12 provided on a lower end side. The piston rod 11 has a handle 13 attached to the upper end, and a sealing member 15 attached to the inner surface of the cylindrical cylinder 2 in airtight sliding contact with the lower end. The sealing member 15 functions as a check valve that takes in air into the cylindrical cylinder 2 when the piston rod 11 moves up and compresses air in the cylindrical cylinder 2 when moving down the piston rod 11. It is formed annularly mainly by a rubber member.

An opening is formed at the upper end of the piston rod 11, and a decorative body 21 is provided in the piston rod 11 from the opening so as to be movable in the axial direction. The decorative body 21 is composed of a shaft member 21a and a doll-shaped decorative body 21b attached to the tip of the shaft member 21a. The decorative body 21b is provided so as to be located at a substantially intermediate position of the piston rod 11. . Since the opening of the piston rod 11 is closed by the handle 13, the decorative body 21 does not protrude from the piston rod 11.

The handle 13 can be attached to the piston rod 11 by inserting the upper portion 11a of the piston rod 11 into the insertion hole 13a and bonding the upper portion 11a with an adhesive. Further, the handle 13 has a female screw portion formed in the insertion hole 13a, a male screw portion formed in the upper portion 11a of the piston rod 11, and the upper portion 11a of the piston rod 11 is screwed into the insertion hole 13a. Then, it may be attached to the piston rod 11.

The fixed ring 7 is inserted through the piston rod 11 before the handle 13 is attached. The fixed ring 7 has a female screw portion 7a formed on the inner surface thereof, which is screwed to the male screw portion 6 of the cylindrical cylinder 2, and further has an annular engagement rim for engaging the upper end of the cylindrical cylinder 2 at the upper portion. 7b is provided. The inner periphery of the engaging edge 7b is formed to be smaller than the outer periphery of the sealing member 15.

A lower end of the cylindrical cylinder 2 is connected to a base end 32 of a hose 30 for jetting compressed air generated by the downward movement of the piston rod 11 from an ejection base 33 provided at the distal end 31. I have.

In the air pump 1, the piston rod 11 is inserted into the cylindrical cylinder 2 from the upper end 2 a opening, and the fixed ring 7 is fixed until the engagement edge 7 b of the fixed ring 7 contacts the upper end 2 a of the cylindrical cylinder 2. Is assembled by screwing the female screw portion 7a of the above into the male screw portion 6 of the cylindrical cylinder 2. The piston rod 11 cannot be pulled out of the cylindrical cylinder 2 because the sealing member 15 is engaged with the engaging edge 7b of the fixed ring 7 fixed to the cylindrical cylinder 2.

In the air pump 1 having the above-described configuration, one foot is placed on the stepping portions 5, 5 of the fixed base 3 attached to the lower end of the cylindrical cylinder 2, the handle 13 is gripped, and the piston rod 11 is pulled up. When air is taken into the cylindrical cylinder 2 and the piston rod 11 is depressed, the air in the cylindrical cylinder 2 is compressed, and this compressed air is ejected from the ejection base 33 at the distal end through the hose 30. Is done.

When the piston rod 11 is pushed down into the cylindrical cylinder 2, the decorative body 21 is hidden in the cylindrical cylinder 2, and when the piston rod 11 is pulled out from the cylindrical cylinder 2, the decorative body 21 2, and further moves up and down in the piston rod 11 due to the reciprocating movement of the piston rod 11.

In the air pump 1 according to the second aspect, in addition to the above configuration, an elastic member 23 is provided below the decorative body 21. The elastic member 23 is formed by a coil spring, and is fixedly attached to the lower end of the shaft member 21a. This elastic member 23 comes into contact with the bottom wall 12 of the piston rod 11.

Since the decorative body 21 of the air pump 1 according to claim 2 comes into contact with the bottom wall 12 via the elastic member 23 at the time of dropping, the impact at the time of dropping is weakened and it is less likely to break. In addition, the elastic member 23 is compressed by the action of the force when the piston rod 11 is pulled up, and when the piston rod 11 is pushed down, the inertial force applied when the piston rod 11 is pulled up and the elastic restoring force of the elastic member 23 cause It can be greatly bounced in the piston rod 11. Thus, the decoration body 21 can be largely moved up and down by the reciprocating movement of the piston rod 11.

In the above-described embodiment, one decoration body 21 is provided in the piston rod 11. However, as shown in FIG. 3, the decoration body 26 having the elastic member 25 at the lower part is attached to the lower side of the elastic member 25. It is needless to say that a plurality may be accommodated in such a way as to be located at

In the air pump 1 according to a third aspect, a sounding body is provided on the decorative bodies 21 and 26. The sounding body is, for example, a bell or the like, and is provided in the decorations 21 and 26 to generate sound when the decorations 21 and 26 move up and down.

In the air pump 1 according to a fourth aspect, the hose 30 is provided with a housing 40 for housing the adapters 35 and 36 detachably attached to the ejection base 33. The container 40 is integrally formed of a sliding member 41 slidably attached to the hose 30, a case 43, and a connecting portion 45 connecting the sliding member 41 and the case 43.

The sliding body 41 is formed in an animal shape and has an insertion hole 42 through which the hose 30 is inserted. The sliding body 41 can slide on the hose 30 and can be fixed to a desired position by frictional resistance. Can be. The case 43 is formed in a seal case shape, and includes two halves 46 and 47 divided into two. One end of one half 46 and one end of the other half 47 are hinged, and are mutually locked by the other end of one half 46 and the other end of the other half 47. Locking projections 48 and 49 are provided in a protruding manner. The connecting portion 45 is connected to the sliding body 41 and one half 46.

In the air pump 1 according to the fourth aspect, the adapters 35 and 36 can be accommodated in the case 43 of the accommodation tool 40 in an overlapping manner. That is, the adapters 35 and 36 are accommodated in one half 46 in an overlapping manner, the other half 47 is overlapped on one half 46, and the engaging projection 49 is engaged with the engaging projection 48. 35, 36 can be accommodated. Conversely, the locking projection 49 can be removed from the locking projection 48, the other half 47 can be opened, and the adapters 35 and 36 can be taken out.

The adapter 35 is inserted into an air inlet of leisure equipment such as a rubber boat, and the adapter 36 is inserted into an air inlet of a ball for ball games. As shown in FIG. 5, the adapters 35 and 36 are interchangeably attached to the ejection base 33 by a mounting lever 38. When both adapters 35 and 36 are accommodated in case 43 of accommodating tool 40, a crocodile clip-type adapter for a normal bicycle tire is replaceably attached to ejection base 33 by mounting lever 38.

[0028]

[Effect of the invention]

 As described above, in the air pump according to the first aspect, the piston rod is formed of a permeable synthetic resin, is formed in a cylindrical shape having a bottom wall provided on the lower end side, and the decorative body is provided in the axial direction. When the piston rod is pushed down into the cylindrical cylinder, the decorative body is concealed in the cylindrical cylinder, and when the piston rod is pulled out from the cylindrical cylinder, the decorative body becomes cylindrical. Appearing from the cylinder and moving up and down in the piston rod by the reciprocating movement of the piston rod, it adds visual interest to the extremely mechanical simple air supply reciprocating operation, which keeps interest and forgets fatigue. There is an effect that the air supply work can be performed.

In the air pump according to the second aspect, an elastic member is provided at a lower portion of the decorative body, and when the decorative body falls, the decorative body contacts the bottom wall via the elastic member when the decorative body falls. The effect is that the impact is weakened and it is less likely to break. In addition, the decorative body can be largely and rhythmically bounced in the piston rod by the elastic restoring force of the elastic member, so that there is an effect that visual appeal can be further increased.

In the air pump according to the third aspect, the sounding body is provided on the decorative body, so that the sound is generated when the decorative body moves up and down, so that not only the visual amusement but also the auditory amusement can be added. There is.

In the air pump according to the fourth aspect, since the hose is provided with a housing for housing the adapter detachably attached to the ejection base, the unused adapter is always stored in the air pump. This has the effect of reducing the loss of the adapter.

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of an air pump according to the present invention.

FIG. 2 is an explanatory diagram illustrating an operation of the air pump.

FIG. 3 is an overall view showing another embodiment of the air pump according to the present invention.

FIG. 4 is an explanatory view of a housing of the adapter.

FIG. 5 is an enlarged view of a main part of the air pump.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air pump 2 Cylindrical cylinder 2a Upper end 3 Fixing stand 5 Foot step 6 Male screw part 7 Fixed ring 7a Female screw part 7b Engagement edge 11 Piston rod 11a Upper part 12 Bottom wall 13 Handle 13a Insert hole 15 Sealing member 21 Decorative body 21a shaft member 21b decorative body 23 elastic member 25 elastic member 26 decorative body 30 hose 31 distal end 32 base end 33 jetting base 35 adapter 36 adapter 38 mounting lever 40 housing 41 sliding body 42 insertion hole 43 case 45 connecting part 46 Half 47 Half 48 Locking projection 49 Locking projection

Claims (4)

[Utility model registration claims] 1. An air pump having the following requirements. (A) It comprises a cylindrical cylinder and a piston rod slidably fitted in the cylindrical cylinder. (B) The piston rod has permeability and is formed in a cylindrical shape having a bottom wall provided on the lower end side. (C) The upper end of the piston rod is provided with a handle, and the lower end is provided with a sealing member which is in air-tight sliding contact with the inner surface of the cylindrical cylinder. (D) The lower end of the cylindrical cylinder is connected to the base end of a hose for jetting compressed air generated by the downward movement of the piston rod from a jet nozzle provided at the tip end. (E) A decorative body is provided in the piston rod so as to be vertically movable. 2. The air pump according to claim 1, wherein an elastic member is provided below the decorative body. 3. The air pump according to claim 1, wherein the decorative body is provided with a sounding body. 4. The air pump according to claim 1, wherein the hose is provided with a housing for housing an adapter detachably attached to the ejection base.