JPH0679695U - Bicycle lock device mounting band - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a mounting band for a bicycle lock device that can be easily mounted on a bicycle and can be manufactured at low cost. [Structure] It is composed of a band body 2 and lock device attachment portions 3 and 3 which are attached to a lock device for a bicycle. And
The band body 2 includes a right tightening operation piece 21 having a bolt fitting hole 22 and a left tightening operation piece 23 having a bolt engaging portion 24.
And a winding part 25 wound around a pipe of a bicycle. In addition, the bolt engaging portion 24 of the left tightening operation piece 23 has a screw hole 24a formed by burring and a peripheral portion of the screw hole 24a on the opposite side of the right tightening operation piece 21 from the outer circumference to the screw hole 24a. It is composed of a recess 24b formed by recessing so as to become gradually deeper.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a mounting band for mounting a bicycle lock device on a bicycle.

[0002]

[Prior art]

 Conventionally, a mounting band has been widely used when mounting a bicycle lock device on a bicycle. This mounting band is provided with a band main body a and a lock device mounting portion (not shown) as shown in FIG. 7, and the band main body a is a pipe p that forms a part of the bicycle. It is made of a thin plate so that it can be wound around the outer periphery of the, and is provided with tightening operation pieces b, c having bolt insertion holes d, d for inserting the tightening bolt e at the front and rear ends thereof, respectively. It is a thing. After the band main body a was placed along the outer periphery of the pipe p of the bicycle, the band main body a was opposed at a predetermined interval by the tightening bolt e passed through the bolt insertion holes d, d and the nut f screwed into the bolt. The tightening operation pieces b and c are brought close to each other so that the band body a can be wound and fixed on the bicycle pipe p. However, when the tightening bolt e passed through the bolt insertion holes d, d and the nut f are screwed together, the band body a along the outer circumference of the bicycle pipe p is held with one hand so as not to be displaced. This has to be done, it is difficult to screw it in, and the nut f may be dropped in some cases. On the other hand, it has been proposed that the nut e is attached to the tightening operation piece c in advance so that the bolt e and the nut f can be easily screwed together as described above. However, with this type, although the bolt e and the nut f can be easily screwed together, there is a problem that the cost increases because a step of attaching the nut f to the tightening operation piece c is required.

[0003]

[Problems to be solved by the device]

 The present invention has been proposed in view of the above circumstances, and an object thereof is to provide a mounting band for a bicycle lock device that can be easily mounted on a bicycle and can be manufactured at low cost.

[0004]

[Means for Solving the Problems]

 The present invention solves the above problems by providing a mounting band for a lock device for a bicycle having the following features. The mounting band of the bicycle lock device according to the present invention includes a band body 2 formed of a thin plate and a lock device mounting portion 3 to which the bicycle lock device J is mounted. The band body 2 includes a tightening operation piece 23 having a bolt engaging portion 24 formed on one end side, a tightening operation piece 21 having a bolt fitting insertion hole 22 formed on the other end side, and a space between them. And a winding portion 25 formed on the. Then, the winding portion 25 is arranged along the outer periphery of the part P of the bicycle so that the two tightening operation pieces 21 and 23 are arranged so as to face each other with a predetermined distance t therebetween. The bolt engaging portion 24 is formed by a part of the tightening operation piece 23. Then, a screw hole 24a that is screwed into the tightening bolt 4 that is passed through the bolt insertion hole 22, and a predetermined size in a direction opposite to the tightening operation piece 21 on the other end side is provided around the screw hole 24a. The recessed portion 24b is recessed. The recess 24b is reinforced by screwing the recess 24b so that the recess 24b is gradually deepened from the outer periphery of the recess 24b to the screw hole 24a.

[0005]

[Action]

 In the present invention, since the bolt engaging portion 24 is formed from a part of the tightening operation piece 23, it is possible to easily tighten the tightening bolt 4 without using a nut unlike the conventional case. . In addition, when tightening the screw hole 24a, a recess 24b is formed in the peripheral portion of the screw hole 24a in a predetermined size so as to be gradually deeper from the outer periphery to the screw hole 24a in the direction opposite to the tightening operation piece 22 on the other end side. Therefore, as shown in FIG. 3, even if the screw portion receives a pulling force in the direction of the right tightening operation piece 21 (X direction in the drawing) as the tightening bolt 4 is tightened, the screw hole 24a The peripheral portion can oppose it, and deformation of the peripheral portion of the screw hole 24a can be prevented.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a mounting band of a bicycle lock device according to the present invention.

As shown in FIG. 1, a mounting band 1 for a bicycle lock device according to this embodiment includes a band main body 2 and lock device mounting portions 3 and 3 mounted on the bicycle lock device J. Although it is a mounting band that is used by being attached to the bicycle lock device J shown in FIG. 4, it can be applied to other various bicycle lock devices. The lock device attaching portions 3 and 3 are integrally formed with the band body 2 as shown in FIG. 1 so as to project from the front and rear sides of the band body 2, respectively. Is provided. Then, as shown in FIG. 4, the pin 5 is inserted into the pin fitting hole 31 and the pin fitting hole provided in the bicycle lock device J to be locked, whereby the mounting band 1 is locked by the bicycle lock device. It is attached to J.

The band body 2 is made of a thin metal plate having a thickness of about 0.8 mm in this embodiment, but the band body 2 can be freely bent by hand to operate the pipe pipe P (FIG. 4). (As shown in FIG. 3), the thickness may be such that it can fit along the outer circumference, more specifically, the thickness may be about 0.5 to 1 mm.

The band body 2 is provided with a right tightening operation piece 21 having a bolt fitting hole 22 on the right end side and a left tightening operation piece 23 having a bolt engaging portion 24 on the left end side. There is. A winding portion 25 wound around the pipe P forming the seat stay of the bicycle is formed between the right tightening operation piece 21 and the left tightening operation piece 23. Further, the length of the winding portion 25 is such that when the winding portion 25 is along the outer periphery of the pipe P as shown in FIG. 2, the right tightening operation piece 21 and the left tightening operation piece 23 have a predetermined interval. It is set so that they can face each other with a gap t therebetween.

The right tightening operation piece 21 and the left tightening operation piece 23 are formed by being extended from the band body 2, and have a role of fixing the winding portion 25 by winding it around the outer periphery of the pipe P. Eggplant

As shown in FIG. 2, the bolt engaging portion 24 of the left tightening operation piece 23 includes a screw hole 24a and a recess 24b formed in the peripheral portion of the screw hole 24a. The screw hole 24a is formed by burring so that a part of the left tightening operation piece 23 is cylindrically protruded to the left side in the figure opposite to the right tightening operation piece 21 to form a screw hole. The screw holes are formed by threading. On the other hand, the recess 24b is for reinforcing the screw hole 24a, and is formed by recessing the peripheral portion of the screw hole 24a to the opposite side of the right tightening operation piece 21 with a predetermined size. The outer diameter R of the recess is about 2 to 3 times the unscrewed hole diameter of the screw hole 24a, and the cross-sectional shape gradually becomes deeper from the outer circumference of the recess to the screw hole 24a. In this embodiment, the curved shape is bulged to the left side, that is, the side opposite to the right tightening operation piece 21, but it may be tapered as shown by the one-dot chain line in FIG. In this embodiment, the recess 24b is formed by pressing the peripheral part of the screw hole 24 of the left tightening operation piece 23 at the same time to the left side during the burring process for forming the screw hole. Is going. This makes it possible to easily form the screw hole 24a and the recess 24b concentric with each other without increasing the number of steps.

Then, in order to mount the band main body 2 configured as described above on the bicycle, after the winding portion 25 is arranged along the outer periphery of the pipe P as shown in FIG. 2, the bolt of the right tightening operation piece 21 is attached. The tightening bolt 4 is passed through the fitting insertion hole 22, and is tightened by engaging with the screw hole 24 of the left tightening operation piece 23. As a result, the right tightening operation piece 21 and the left tightening operation piece 23 are attracted to each other, and the gap t between them is narrowed. As a result, the winding portion 25 can be tightened on the outer circumference of the pipe P. it can.

Further, when the tightening bolt 4 is tightened, it is possible to prevent the recess 24 b from deforming the left tightening operation piece 23 or causing a trouble in the screw hole 24. For example, as shown in FIG. 5, when only the screw hole 24a is formed by burring without forming the recessed portion 24b, the left tightening operation piece 23 has a small thickness and the cylindrical portion having the screw hole 24a is formed. Since the wall thickness is about the same as the thickness of the left tightening operation piece 23 and the screw length of the screw hole is short (about two screw threads), it is necessary to tighten the tightening bolt 4 as shown in FIG. Along with this, when the screw part engaged with the tightening bolt 4 is pulled in the direction of the right tightening operation piece 21 (X direction in the drawing), the periphery of the screw hole 24a of the left tightening operation piece 23 is also drawn and deformed. As a result, the screw thread of the screw hole 24 is also deformed and cannot be screwed into the tightening bolt 4, so that the screw cannot be rotated. For this reason, the tightening bolt 4 cannot be tightened too strongly if only the hole 24a is formed by burring. However, if the recess 24b is provided as in the present invention, even if the screw portion is pulled in the direction of the right tightening operation piece 21 (X direction in the drawing) as shown in FIG. Since the shape is gradually deeper toward 24a and curved to the left side, the peripheral portion of the screw hole 24a can oppose it, and deformation of the peripheral portion of the screw hole 24a can be prevented. Therefore, the tightening bolt 4 can be strongly tightened with a stronger force than that of the case where only the screw hole 24a is formed.

Hereinafter, three pieces shown in FIGS. 5 and 6 (samples NO1 to 3) in which only screw holes are formed by burring processing, and three pieces of the present invention (samples NO4 to 6) provided with the concave portion 24b are shown. The results of the comparative test are shown in Table 1 below. In this comparative test, the M4P0.7 screw hole 24a was formed in the left tightening operation piece 23 of the band body 2 which was made of a thin metal plate having a thickness of 0.8 mm. It is assumed that a recess 24b having an outer diameter R of 6.8 mm (in this case, the screw hole diameter is about 3.4 mm is twice that) is formed, and after the band body 2 is placed along the pipe P, Then, the tightening bolt 4 was set, the tightening bolt 4 was tightened with a screw torque driver, and the deformation state at a predetermined torque value was observed to perform the test.

[0015]

[Table 1]

The result of the comparative test shows that the screw hole 24a alone deforms with a torque value of 15 to 20 kg · cm, whereas the invention with the recess 24b has a torque value of 25 kg · cm. No deformation was seen.

[0017]

[Effect of device]

 As described above in the embodiments, the present invention does not require the use of nuts as in the prior art, and the tightening bolts can be easily tightened, and the mounting work can be facilitated. Moreover, it is possible to manufacture at low cost without using a nut. In addition, when tightening it, the concave part can prevent the deformation of the peripheral part of the screw hole, and even if the screw hole is formed by burring processing from a thin plate material, the tightening bolt can be tightened without hindering the screw hole. Can be tightened.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a mounting band of a bicycle lock device according to the present invention.

FIG. 2 is a cross-sectional explanatory view of a state where the bicycle is attached to a bicycle pipe.

FIG. 3 is a cross-sectional explanatory view of an essential part when tightening a tightening bolt.

FIG. 4 is a perspective view showing a mounting band of the present invention attached to a bicycle lock device.

FIG. 5 is an explanatory cross-sectional view of a case where only a screw hole is provided without providing a recess.

FIG. 6 is a cross-sectional explanatory view of a main part when a tightening bolt is tightened on a screw hole which is not provided with a recess and is formed only by a screw hole.

FIG. 7 is a cross-sectional view of a main part of a conventional example.

[Explanation of symbols]

 1 Mounting band 2 Band body 3 Lock device mounting part 4 Tightening bolt 21 Right tightening operation piece 22 Bolt fitting hole 23 Left tightening operation piece 24 Bolt engaging part 24a Screw hole 24b Recess 25 Winding part 23 Locking member Storage section P Pipe J Bicycle lock device

Claims (1)

[Scope of utility model registration request] 1. A bolt having a thin plate-shaped band body (2) and a lock device mounting portion (3) for mounting a bicycle lock device (J), wherein the band body (2) is formed on one end side. Engagement part (2
4), a tightening operation piece (23) having a bolt fitting hole (22) formed on the other end side, and a winding portion (25) formed between them. ) And the winding part (25) is arranged along the outer periphery of the part (P) of the bicycle, so that both tightening operation pieces (21) and (23) face each other at a predetermined distance (t) from each other. The bolt engaging portion (24) is formed by a part of the tightening operation piece (23), and the tightening bolt (4) is inserted through the bolt fitting insertion hole (22). ) With a screw hole (24a) and a recess (24b) recessed in the opposite direction to the tightening operation piece (21) on the other end side of the periphery of the screw hole (24a). ) Is recessed so that it gradually deepens from the outer periphery of the recess (24b) to the screw hole (24a).
Mounting band for a bicycle lock, characterized in that a) is reinforced.