Collapsible handle device for inflator

Abstract

A collapsible handle device for inflator comprises an air cylinder having a shaft lever and a hollow grip, in which one end of the shaft lever is connected to a piston inside the air cylinder, and the other end is provided with a rotation body, which is pivotally jointed with the grip. A channel, wider than the diameter of the shaft lever, is formed in the lateral wall of the grip. The air cylinder could be inserted in the grip so as to reduce the volume of the inflator, or the air cylinder could be pulled out from the grip, then turned 180° to form a straight line with the shaft lever, such that a user may hold the air cylinder with his one hand and operate the shaft lever in axial direction to pump air out through an air vent at one end of the air cylinder.

Description

FIELD OF THE INVENTION

[0001] This invention relates to a collapsible handle device applicable, for example, to a bicycle.

BACKGROUND OF THE INVENTION

[0002] A generic inflator having a collapsible handle device available in the market is made for easy packing in a small volume to thus facilitate storing or carrying when it is not in use, or extending it for hand operation if desired.

[0003] Referring to a conventional inflator having a collapsible handle device shown in FIG. 5, one end of a shaft lever (B) of an air cylinder (A) is pivotally jointed to a grip (D) through a shaft pin (C). In a lateral wall of the grip (D), a channel (D1) having its width larger than the shaft lever (B)'s diameter and penetrating only one end of the grip (D) is formed. When the inflator is not in use, a user may turn the grip (D) relatively to the shaft lever (B) to permit the latter to go passing the channel (D1) for being stored inside the grip (D). And further, the user may also make the grip (D) and the air cylinder (A) stand in a straight line such that he can store or carry the inflator by this way, or he may grasp the grip and move it axially so that the piston in the air cylinder (A) would pump the inside air out. However, the operation in this way can merely squeeze an insufficient quantity of air into a bicycle's tire due to the shortened stroke of the shaft lever (B) and accordingly the reduced volume inside the air cylinder caused by the limitation of the bottom end (D2) of the grip (D). Therefore, a user is likely to draw the shaft lever (B) and grip (D) out and bend the grip (D) perpendicularly to form an L character with the shaft lever (B) to remove the limitation on the shaft lever (B)'s stroke to hence make full use of the volume of the air cylinder. Nevertheless, the L-shape operation is rather tough because of the application of a force moment involved.

SUMMARY OF THE INVENTION

[0004] The primary objective of this invention is to eliminate the defect in that the volume efficiency of a conventional collapsible handle device for inflator is deteriorated when a grip and an air cylinder are aligned in a straight line.

[0005] Another objective of this invention is to eliminate the defect in that the operability of a conventional collapsible handle device for inflator is deteriorated when a grip is extended to form an L-character with a shaft lever.

[0006] Yet another objective of this invention is to eliminate the defect in that the volume of a conventional collapsible handle device for inflator is failed of being minimized extremely when a grip thereof is collapsed.

[0007] In order to realize abovesaid objectives, the collapsible handle device for inflator of this invention is completed by: forming a channel penetrating both ends of a grip in a lateral wall thereof, pivotally jointing a rotation body at one end of a shaft lever with one end of the grip so that an air cylinder could be inserted in the grip through one end thereof for reduction the volume of the entire inflator. Also, the air cylinder could be drawn out of the grip, then turned 180° to form a straight line with the shaft lever to thereby enable a user to hold the air cylinder with one hand and operate the shaft lever axially with the other so that air is pumped out through an air vent without deteriorating the volume efficiency of the air cylinder.

[0008] In addition, an annular flange or a corresponding annular groove is formed on the air cylinder and the grip, respectively, to serve as a sleeve-jointing structure for obtaining a better positioning effect of the air cylinder in the grip.

[0009] When compared with a conventional collapsible handle device for inflator, this invention shall not deteriorate the volume efficiency when the grip and the shaft lever are extended to stand in a straight line for inflating operation, and more than that, is operable much easier, and reducible to the extreme for easy carrying and storing.

[0010] For more detailed information regarding advantages or features of this invention, at least an example of preferred embodiment will be fully described below with reference to the annexed drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The related drawings in connection with the detailed description of this invention to be made later are described briefly as follows, in which:

[0012] FIG. 1 is a three-dimensional view showing the structure of an air cylinder and grip of this invention and a separate state thereof;

[0013] FIG. 2 is a three-dimensional view showing the state that a rotation body buried in a shaft lever of this invention is pivotally jointed to the grip;

[0014] FIG. 3 is a three-dimensional view showing that the grip is turned around such that the shaft lever can be hidden in the grip;

[0015] FIG. 4 is a three-dimensional view showing the state of pushing the air cylinder into the grip; and

[0016] FIG. 5 is a three-dimensional view showing the structure of a convenient collapsible inflator.

DETAILED DESCRIPTION OF THE INVENTION

[0017] As illustrated in FIG. 1, an embodiment of this invention comprises an air cylinder 1 and a hollow tubular grip 2, in which a piston (not shown) is buried in the air cylinder 1 and connected with a shaft lever 13 in a way such that one end of the shaft lever 13 can penetrate a through hole 12 formed in one end of the air cylinder 1. The end of the shaft lever 13 penetrated through air cylinder is provided with a rotation body 131 having a through hole 132 on two respective sides. The rotation body 131 is preferably a sphere for mating with the inner diameter of the tubular grip 2. An air vent 11 is arranged in the other end of the air cylinder 1 for rejecting the air in the air cylinder 1 as the piston is driven to move when the shaft lever 13 is moving axially.

[0018] The mentioned grip 2, about the same as the air cylinder 1 in length, is substantially a hollow tubular body having a channel mouth 24 or an opening 25 defined at its respective ends (the channel mouth 24 is U-shaped in this invention). A channel 21 is formed in the lateral wall of the grip 2 from the channel mouth 24 to go along the central axial direction all the way down to the opening 25, in which both the width of the channel 21 and the channel mouth 24 are larger than the diameter of the shaft lever 13. A hole 22 penetrating the lateral wall of the grip 2 twice is defined adjacent to the channel mouth 24, and an inner space 20 of the grip 2 is available for receiving the air cylinder 1. The mentioned rotation body 131 combined with the shaft lever 13 is inserted in the inner space of the grip 2 through the opening 25 to have its hole 132 coincided with the hole 22 so that a shaft pin 3 can be arranged penetrating the hole 22 of the grip 2 twice and the hole 132 of the rotation body 131 for being pivotally jointed with the grip 2 to thereby allow relative rotation between the grip 2 and the shaft lever 13.

[0019] When the inflator is not in use, a user may turn the grip 2 relatively to the air cylinder 1 to a position, where the opening 25 would point toward the air cylinder 1 as shown in FIG. 3, then, push the air cylinder 1 into the inner space 20 of the grip 2 through the opening 25 for being stored in the grip 2 as shown in FIG. 4. By doing in this manner, the whole body of the inflator can be reduced to a minimum volume for easy carrying or storing.

[0020] When use of the inflator is desired, a user is supposed to draw the air cylinder 1 out of the grip 2 (as in the state FIG. 3 indicates), then, turn the grip 2 to allow the shaft lever 13 to move out of the channel 21, and turn the grip 2 farther until 180° is reached to permit the shaft lever 13 to enter the channel mouth 24 for being fixed in the shaft lever 2 stably (as the state shown in FIG. 2). After the procedures are done, the shaft lever 13 is prolonged and both the grip 2 and the shaft lever 13 are flush aligned. Under such a situation, the user is capable of holding the air cylinder 1 with his one hand and holding the grip 2 with the other for operating the shaft lever 13 in axial direction for inflating.

[0021] Besides, for obtaining a further positioning effect after the air cylinder 1 enters the grip 2, an annular flange 14 is defined on the outer wall of the air cylinder 1 while a corresponding annular groove 23 is formed on the inner wall of the grip 2, such that the annular flange 14 is flexibly forced into the annular groove 23 for being positioned. In the embodiment of this invention, the annular flange 14 is disposed adjacent to the air vent 11 while the annular groove 23 is adjacent to the opening 25 to hence obtain a good combination positioning effect of the grip 2 and the air cylinder 1.

[0022] In the above described, at least one preferred embodiment has been described in detail with reference to the drawings annexed, and it is apparent that numerous changes or modifications may be made without departing from the true spirit and scope thereof, as set forth in the claims below.

Claims

1. A collapsible handle device for inflator, comprising: an air cylinder having a shaft lever connected with a piston; an end of said shaft lever extended out of the air cylinder being provided with a rotation body; said rotation body having a through hole; a grip being substantially a hollow tubular body; the grip being large enough for accommodating said air cylinder; each of two ends of said grip having, respectively, a channel mouth, and an opening; the length of said grip being about equal to that of said air cylinder; a channel being formed in a lateral wall of said grip from the channel mouth all the way down to the opening along the axial direction of said grip; both the width of said channel and said channel mouth being larger than the diameter of said shaft lever; a penetrating hole being formed in two opposite lateral walls, respectively, of said grip; and a shaft pin being applied to pass through the hole of said grip and the through hole of said rotation body when said rotation body is inserted in said grip to thereby pivotally joint said grip with said rotation body to enable said grip and said rotation body to rotate relatively.

2. The collapsible handle device according to claim 1, in which an annular flange is formed on the outer surface of said air cylinder and an annular groove is disposed on the inner surface of said grip, such that said air cylinder can be fixed and stored inside said grip stably by taking advantage of mutual engagement of said flange and said groove.