JP2826703B2 - Horseshoe lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horseshoe lock which is used by being attached to a vehicle body such as a bicycle. More particularly, the present invention relates to a fixture for attaching and fixing a lock body of a horseshoe lock to a pipe member of a vehicle body. About.

[0002]

2. Description of the Related Art A horseshoe lock usually has a fixing device for fixing a lock body to a pipe member of a vehicle body. FIG. 6 shows an example of a conventional fixing device 41. As shown in FIG. This fixture 41 is
The whole is formed of a metal thin plate, and a belt portion 42,
At the center of the belt portion 42, screw stopper portions 43, 43 projecting to both sides are provided. At both ends of the belt portion 42, bolt insertion holes 44, 44 are provided. The fixing tools 41 are arranged one on each side of the back surface of the lock body 40, and the screws 45, 43 are attached to the lock body 40 by screws 45.
Fix with.

In order to attach this horseshoe lock to a bicycle, the horseshoe lock is arranged on the seat stay 31 so that the lock body 40 straddles the rear wheel, and the belt portion 42 of the fixing tool 41 is attached to the outer peripheral surface of the seat stay 31. And then adjust the positions of the bolt insertion holes 44, 44 at both ends, and then,
Insert a bolt into 4 and tighten the nut.

However, in this fixing tool 41, a belt portion 42
Since the horseshoe lock is fixed by tightening the outer peripheral surface of the seat stay 31 over the entire inner surface of the seat stay 31, it is difficult to securely fix the lock body 40, and the horseshoe lock may slide on the seat stay 31. Further, if the bolt is strongly tightened to increase the fixing force, the belt portion 42 may be broken.

[0005] In order to solve this problem, a fixing tool 51 having a structure as shown in FIG. 7 has been proposed. This fixture 51
The belt 52 is formed entirely of a thin metal plate and has bolt insertion holes 54, 54 at both ends, and screw stoppers 53, 5 projecting to both sides at the center of the belt 52.
3 is provided. Further, in this fixing tool 51, the end of the screw stopper 53 is bent to the opposite side to the lock body 50,
A protruding piece 55 is formed.

In order to attach the horseshoe lock to the bicycle, the horseshoe lock is placed on the seat stay 31, the belt portion 52 of the fixing tool 51 is wound around the outer peripheral surface of the seat stay 31, and the bolt insertion holes 54 at both ends are positioned. After alignment, tighten and secure using bolts and nuts. Due to this tightening force, the end face of each protruding piece 55 of the fixture 51 is pressed against the seat stay 31, but since the end face of this protruding piece 55 has a small area,
The pressing force is concentrated, and the lock body 50 can be securely fixed to the seat stay 31 even with a small tightening force, and the lock body 50 does not slide on the seat stay 31.

[0007]

However, in the above-mentioned fixing tool 51, since the end face of the projecting piece 55 is a straight flat surface, when the horseshoe lock is attached to the vehicle body, the projecting piece 55 with respect to the outer peripheral surface of the seat stay 31 is used. It is necessary to find the optimal contact position of Also, even if the optimum contact position is determined, the end surface of the projecting piece 55 is
May slide on the outer peripheral surface and be fixed from the optimal position.

The present invention has been made in view of the above-mentioned problem, and allows the fixing tool to be quickly and appropriately positioned on the pipe member, and furthermore, the lock body can be stably fixed on the pipe member after installation. It is intended to provide a horseshoe lock.

[0009]

A horseshoe lock according to the present invention comprises a lock body, and a fixture for fixing the lock body to a pipe member of a vehicle body with the lock body facing a wheel. A support substrate provided on the back side of the lock body, a belt provided on the support substrate on the back side of the lock body at right angles to the support substrate, and a presser provided on the belt on the back side of the lock body at right angles to the belt. It comprises a plate and a fastener for tightening and fixing the belt wound around the outer peripheral surface of the pipe member. At four corner positions on the upper surface of the support substrate,
Protrusions are integrally formed to project from the groove having a groove width capable of accommodating the belt and the groove having a groove width capable of accommodating the holding plate, and an upper end surface of each protrusion has a pipe member. A curved pipe support surface is formed along the outer peripheral curved surface. Both ends of the holding plate are screwed to the back of the lock body.
Consisting of Te.

[0010] In the horseshoe lock of the second aspect, the fixing device is provided at two places on the left and right.

[0011]

When the horseshoe lock of the present invention is mounted on a vehicle body, the fixture is automatically positioned at an appropriate position by fitting the curved pipe support surface of the support substrate to the outer peripheral surface of the pipe member of the vehicle body. You. When the belt is wound around the outer peripheral surface of the pipe member at that position and tightened and fixed by the tightening tool, the pressing force is concentrated on the pipe support surface, and the fixing tool is stably fixed.

In the horseshoe lock according to the second aspect, since the fasteners are provided at two places on the left and right, for example, by fixing each fastener to a pair of seat stays of a bicycle, the horseshoe lock can be provided at two places. It is fixed stably. .

[0013]

FIG. 1 shows the appearance of a horseshoe lock according to one embodiment of the present invention. The horseshoe lock includes a lock body 2 and two fixing members 3 for fixing the lock body 2 to a vehicle body. The lock body 2 has a flat horseshoe shape as a whole, and a lock case 20 forming an outer wall includes an annular guide portion 21 and a mechanism accommodating portion 22 integrally formed next to the annular guide portion 21. An arc-shaped latch 24 is provided inside the annular guide portion 21 so as to be able to reciprocate. The annular guide portion 21 is provided with an opening portion 23 having an opening width corresponding to the width of the rear wheel 30 of the bicycle in the middle. An opening 25 is provided on the surface of the mechanism accommodating section 22, and a rotor 27 is supported in a cylindrical case 26 supported by the opening 25 so as to be freely rotatable in the forward and reverse directions. This rotor 2
A key hole 28 through which a key can be inserted / removed is provided on an end face of 7.

When the key is inserted into the key hole 28 and the rotor 27 is rotated forward and backward, the leading end of the latch 24 projects from the open end 23A and the annular guide 21 from the open end 23B.
Or the tip of the bar 24 is open end 23B.
Then, the entire length of the latch 24 is retracted into the annular guide portion 21 from the open end 23A.

FIG. 2 shows the horseshoe lock attached to a bicycle. The horseshoe lock is such that the lock body 2 straddles the rear wheel 30 and is attached and fixed to the pair of seat stays 31, 31 by the two fixing tools 3, 3, when the latch 24 protrudes. , The bolt 24 is spoke 3
It penetrates between 2,32.

As shown in FIGS. 3 and 4, the fixing device 3 includes a support substrate 4 attached as a base to the back side of the lock body 2 and a support member 4 mounted orthogonally to the support substrate 4 and wound around a seat stay 31. A belt 5 and a holding plate 6 that is orthogonal to the belt 5 and that fixes the support substrate 4 and the belt 5 to the lock body 2 integrally are provided.

The belt 5 is a thin metal plate, and its plate surface is provided with elliptical holes 7, 7 for enhancing flexibility. A bolt insertion hole 9 is formed at both ends of the belt 5, and a nut (not shown) for screwing a bolt is attached to one of the bolt insertion holes 9. The bolts and the nuts constitute a fastener for fastening the belt 5 in a state of being wound around the outer peripheral surface of the seat stay 31.

The support substrate 4 is a rectangular plate-shaped synthetic resin molded body. As shown in FIG. 5, protrusions 10 are integrally provided at four corners of the upper surface so as to protrude from both sides of the belt 5. On the upper end surface of each projection 10, a pipe support surface 11 cut in a curved shape toward the inner side surface is formed along the outer peripheral curved surface of the seat stay 31. The protruding portion 10 adjacent to the long side,
The groove 12 formed between the protrusions 10 has a groove width capable of accommodating the lateral width of the belt 5, and the protrusions 10, 10 adjacent to the short side.
The groove 13 formed therebetween has a groove width capable of accommodating the lateral width of the holding plate 6 described later.

As shown in FIG. 4, the holding plate 6 has a central restraining portion 14 and screwing portions 15, 1 formed at both ends thereof.
5 A support substrate 4 is arranged on the back surface of the lock body 2,
The belt 5 is formed on the groove 12 so as to be orthogonal to the support substrate 4.
And a screwing portion 15 is fixed to the back surface of the lock body 2 with a screw by further pressing the holding plate 6 in the groove 13, whereby the support substrate 4 and the belt 5 are fixed to the holding plate. 6 are integrally fixed by the restraining portions 14. One fixing device 3 is provided on each side of the back surface of the lock body 2.

In order to fix the lock main body 2 on the seat stay 31 with the fixing device 3 having the above-described structure, the pipe support surface 11 of the support substrate 4 is fitted to the outer peripheral surface of the seat stay 31. Thereby, the lock main body 2 is automatically positioned at the optimum position. At the mounting position, the belt 5 is wound along the outer peripheral surface of the seat stay 31, the bolt insertion holes 9, 9 at both ends of the belt 5 are aligned, and tightened and fixed with bolts and nuts.

At this time, the outer peripheral curved surface of the seat stay 31 is
Since it fits halfway into the support substrate 4 along the pipe support surface 11, there is no displacement during the mounting operation.
The lock main body 2 does not rattle even after being attached, and is stable. Further, since the pipe support surface 11 of the support substrate 4 presses the seat stay 31 from above, and the belt 5 presses the seat stay 31 from below, the pressing force is concentrated on a small area, and the lock is securely performed even with a small fastening force. The main body 2 can be fixed, and does not slide on the seat stay 31.

[0022]

As described above, according to the present invention, only by fitting the curved pipe supporting surface of each projection provided on the support substrate to the outer peripheral surface of the pipe member of the vehicle body, the fixing tool can be properly mounted. As a result, the horseshoe lock can be quickly and easily attached to the pipe member. In addition, since the pipe support surface has a shape such that the outer peripheral curved surface of the pipe member is partially fitted into the support substrate, there is no deviation from an appropriate mounting position during the mounting operation. Furthermore, since the lock body is supported by the curved pipe support surface after the attachment, the lock body is stably fixed and does not rattle.
Furthermore, screw both ends of the holding plate to the back of the lock body with screws.
Therefore, the support substrate and belt are fixed integrally to the lock body.
It is.

According to the second aspect of the present invention, since the fixing members are provided at two places on the left and right, the lock body is stably fixed to the two places on the vehicle body by attaching each fixing means to, for example, a pair of seat stays. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a horseshoe lock of the present invention.

FIG. 2 is a front view showing a state in which a horseshoe lock is attached to a bicycle.

FIG. 3 is a side view of the fixing device with a horseshoe lock attached to a bicycle.

FIG. 4 is a plan view showing the structure of the fixture.

FIG. 5 is a perspective view of a support substrate.

FIG. 6 is a side view showing a conventional fixture.

FIG. 7 is a side view showing another conventional fixing device.

[Explanation of symbols]

 2 Lock body 3 Fixture 4 Support board 5 Belt 6 Pressing plate 11 Pipe support surface

Claims (2)

(57) [Claims] 1. A lock body comprising: a lock main body; and a fixing tool for fixing the lock main body to a pipe member of a vehicle body with the lock main body facing a wheel, wherein the fixing tool includes a support substrate provided on a back side of the lock main body. ,
A belt provided on the support substrate on the back side of the lock body at right angles to the support substrate, a pressing plate provided on the belt on the back side of the lock body at right angles to the belt, and an outer peripheral surface of the pipe member. A groove having a groove width capable of accommodating the belt and a groove accommodating the holding plate at four corner positions on an upper surface of the support substrate. wide groove with protrusions spaced each is integrally protruded in the upper end surface of the projections, a curved pipe support surface along the outer curved surface of the pipe member are formed respectively, the pressing plate A horseshoe lock with both ends screwed to the back of the lock body . 2. The horseshoe lock according to claim 1, wherein the fixing device is provided at two places on the left and right.