JP2688808B2 - Horseshoe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock for locking a vehicle such as a bicycle or a motorcycle, and in particular, the present invention has a horseshoe-shaped lock body as a whole, and an open / closed lancet at its opening. The present invention relates to a horseshoe tablet that is unlocked and locked by being locked.

[0002]

2. Description of the Related Art In this conventional horseshoe lock, as shown in FIG. 8, an arc-shaped bolt 4 is reciprocally provided inside an annular guide portion 2 of a lock case 1, and the guide portion 2 is provided. It has a structure in which a lock mechanism is incorporated inside the mechanism accommodating portion 3 provided adjacent to the. The annular guide portion 2
An opening 5 having an opening width corresponding to the width of the wheel is provided in the middle of the wheel. The locking and locking of the wheel is performed by operating the tip of the latch 4 with respect to the opening 5 from one open end 5A. Unlock. An arc groove 6 is formed in the annular guide portion 2, and an operation lever 7 integral with the latch 4 projects on the arc groove 6. The mechanism housing 3
Is provided with a key hole for inserting and removing a key 8 for operating the lock mechanism. The key 8 is held inserted into the keyhole when unlocked, and can be removed from the keyhole when locked. The horseshoe lock is attached and fixed to the vehicle body by a holder (not shown) so as to straddle the wheels.

When the operating lever 7 is operated along the arcuate groove 6 for locking, the bar 4 slides in the annular guide portion 2 and its tip projects from the open end 5A to the open part 5 and the spokes of the wheel. Penetrate through. The annular guide portion 2 has a predetermined depth from the open end 5B at which the tip of the bolt 4 is opposed.
Then, the lock mechanism operates to lock the latch 4 in that state, and the key 8 can be removed from the keyhole. When unlocking, when the key 8 is inserted into the key hole of the mechanism accommodating portion 3 and operated, the lock mechanism is released to release the lock 4 from the restrained state, whereby the lock 4
Performs a return operation due to the spring force of a spring (not shown), and the distal end portion retreats inside the open end 5A to open the open portion 5.

[0004]

However, in this type of horseshoe lock, an arc groove 6 is formed in the annular guide portion 2,
Since it is necessary to provide the operation lever 7 for locking operation, the external structure becomes complicated, and the assembly and adjustment are troublesome, and the manufacturing cost of the horseshoe lock is high. In locking, a two-stage operation of operating the operation lever 7 and then removing the key 8 from the keyhole is necessary, and the operation is complicated. Moreover, since it is necessary to operate the operation lever 7 over the entire length of the arc groove 6 within the narrow mounting space of the horseshoe lock, there is a problem that the operation is difficult to perform. Further, when unlocked, if an object collides with the operation lever 7 and a pressing force acts,
The latch 4 may project to the opening 5, which is extremely dangerous. In order to prevent this malfunction, there is a system in which the lock 4 is set to the locked state in the unlocked state, and when the key 8 is inserted and operated, the lock of the lock 4 is released to enable the lever operation. In the case of this system, when locking the lock, it is necessary to perform a three-step operation of releasing the restraint of the operating lever 7, operating the operating lever 7, and removing the key 8, which further complicates the operation.

The present invention has been made in view of the above problems. The operation lever is completely eliminated, and unlocking and locking operations can be performed only by key operation, thereby improving operability and simplifying the structure. It is an object of the present invention to provide a horseshoe lock that simultaneously realizes the prevention of malfunction and malfunction.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a lock body,
In order to fix this lock body to the vehicle body while facing the wheel
A horseshoe lock consisting of a holder of
An annular guide part with an open part in the middle and this annular guide
Case provided with a mechanism accommodating section provided adjacent to the section
And reciprocating along the annular guide part of the lock case
It is supported and reciprocally moves to the tip side of the annular guide portion.
A latching part that appears in and out of the open part is formed, and there are multiple
It is rotatably supported by the opening formed in the mechanism housing part of the lock case, and the inner part is formed by the engagement part composed of the teeth of the lock case. Which has a lock mechanism incorporated therein, a drive gear which can be rotated forward and backward and which is disposed inside the mechanism housing portion of the lock case while meshing with the meshing portion of the bolt, and the mechanism housing portion of the lock case. And a drive mechanism of a drive gear disposed between the rotor and the drive gear.

The drive mechanism responds to the rotation of the rotor in the locking direction to rotate the drive gear in the locking direction, a spring for urging the boot in the unlocking direction, and A restriction mechanism section that allows the drive gear to rotate in the locking direction and restricts the rotation in the unlocking direction, and releases the restriction operation of the restriction mechanism section in response to the rotation of the rotor in the unlocking direction. And a restriction release mechanism section for

[0008]

[Operation] When locked, the rotor rotates in the locking direction by key operation
Then, in response to this, the locking mechanism of the drive mechanism is driven.
Rotate the ya in the locking direction. Cans that mesh with the drive gear
The hollow slides on the annular guide part due to the rotation of the drive gear,
The latching part projects to the open part and is closed. In this case, the spring
Although the spring force of the
Since the rotation of the ya in the unlocking direction is regulated, the spring force
Rikanuki does not recover.

When unlocking, the rotor is unlocked by key operation.
When rotated, the restriction release mechanism responds to this and the restriction release mechanism
Release the regulation of the drive gear by the section. This will drive
Since the ya can freely rotate in the unlocking direction, the spring force of the spring
Causes the drive gear to rotate in the unlocking direction and engage with this drive gear.
The mating bolt slides on the annular guide in the opposite direction,
The stopper part retreats from the open part and opens.

[0010]

FIG. 1 shows a state in which a horseshoe lock according to the present invention is mounted on a bicycle. This horseshoe lock comprises a lock body 10 and a holder 11, and the lock body 10 is
The holder 11 is attached and fixed to the two rear forks 14, 14 of the bicycle in such a manner as to straddle the five. The holder 11 is formed by attaching metal fittings 12 to both sides of the rear surface of the lock body 10, and the horseshoe lock is fixed to the vehicle body by fitting the metal fittings 12 in the rear forks 14 and tightening the screws 13. In the drawing, reference numeral 16 denotes a spoke of the rear wheel 15, and a latch 30 described later penetrates between the spokes 16 by its protruding operation.

FIG. 2 shows the appearance of the horseshoe lock described above.
FIG. 1 shows a lock body 10 and one metal fitting 12 constituting the holder 11. The lock body 10
The lock case 20 has an annular guide portion 21 and a mechanism accommodating portion 22. The mechanism accommodating portion 22 is integrally formed adjacent to the annular guide portion 21, and as shown in FIGS. 2 and 3,
The surface slightly projects from the annular guide portion 21.

Inside the annular guide portion 21, an arc-shaped bolt 30 is reciprocally provided. The annular guide portion 21 is provided with an opening portion 23 having an opening width corresponding to the width of the rear wheel 15 in the middle, and the tip end portion of the bolt 30 projects from one open end 23A and is annular from the other open end 23B. Enter into the guide portion 21.

An opening 24 is formed on the surface of the mechanism accommodating portion 22.
And a cylindrical case 27 supported by the opening 24.
The rotor 40 is supported therein so as to freely rotate in the forward and reverse directions. A key hole 41 into which a key 42 can be inserted and removed is provided on an end surface of the rotor 40.

FIGS. 4 and 5 show the internal structure of the lock body 10. FIG. 4 shows the locked state and FIG. 5 shows the unlocked state. The latch 30 has a hooking portion 31 that is half the length on the distal side, and a meshing portion 32 that is half the length on the proximal side. The meshing portion 32 is formed by forming a plurality of sawtooth-shaped teeth 33 on the outer peripheral edge of the latch 30. The hooking portion 31 moves the open end 23 by the reciprocating motion of the bar 30.
A goes into and out of the open portion 23 from A, and enters and escapes into the annular guide portion 21 from the other open end 23B. Inside the annular guide portion 21 and at a position inside the opening end 23B, a stopper 25 for restricting the depth of entry of the latching portion 31 is projected.

A drive gear 50 is provided inside the mechanism accommodating portion 22 in a state in which it meshes with a meshing portion 32 of the hollow 31 and a drive mechanism 55 for driving the drive gear 50 is provided with the rotor 40 and the drive gear. It is arranged by interposing between 50 and 50.

As shown in FIG. 7, the rotor 40 has a plurality of disc accommodating grooves 43 formed therein so as to be orthogonal to the key hole 41. In each disc housing groove 43, a disc 44 having a key insertion hole on the plate surface and each disc 4
4 are loaded with coil springs (not shown) for urging them outward, respectively, to form a lock mechanism, while a disc housing groove is formed on the inner surface of the cylindrical case 27 that supports the rotor 40 so as to freely rotate in the forward and reverse directions. An engagement groove 26 that engages with and disengages from the disc 44 protruding from 43 is formed.

FIG. 7 (1) shows a locked state, in which each disk 44 of the rotor 40 is biased by a coil spring to project from the disk accommodating groove 43, and the cylindrical case 27
Is engaged with the engagement groove 26. FIG. 7B shows a state in which the key 42 is inserted into the key hole 41 of the rotor 40, and each disk 44 of the rotor 40 is retracted into the disk accommodating groove 43 and the engaging groove 26 of the cylindrical case 27.
Engagement is disengaged, the rotor 40 has a rotatable state for the cylindrical case 27 and. FIG. 7C shows an unlocked state when the key 42 is rotated by a predetermined angle. In this state, since the opening position of the disc accommodating groove 43 of the rotor 40 is out of the position of the engaging groove 26 of the cylindrical case 27, each disc 44 is attached to the cylindrical case 27.
The inner surface of the key prevents the key 42 from being pulled out, making it difficult to remove the key 42.

The cylindrical case 27, as shown in FIG.
The lock case 20 includes a flange 28 fixed to the periphery of the opening 24 of the lock case 20, and a sleeve 29 that supports the drive gear 50 so that the drive gear 50 can rotate forward and backward. The rotor 40 protrudes from the opening end of the sleeve 29, and a cam plate 91 forming a restriction releasing mechanism 90 described later is rotatably supported on the protruding portion and a groove formed in the protruding end face. An actuating member 70 that rotates together with the rotor 40 is fitted into the shaft 45.

The drive gear 50 has a plurality of teeth 51 arranged in a row on the outer peripheral surface thereof for meshing with the meshing portions 32 of the bolt 30, and the protrusions 5 engaging with the actuating member 70 at appropriate positions on the plate surface.
2 are protruding. The protrusion 52 constitutes a locking mechanism portion 53 for rotating the drive gear 50 in the locking direction a.

The drive mechanism 55 for driving the drive gear 50 in the forward and reverse directions includes the operating member 70 and the locking mechanism portion 61.
The coil spring 60, the restriction mechanism section 80, and the restriction release mechanism section 90 described above. The coil spring 60 is stretched between a rear end portion of the hollow 30 and a projection 61 projecting inside the annular guide portion 21.
0 is urged in the unlocking direction.

The restriction mechanism 80 is for permitting rotation of the drive gear 50 in the locking direction a and restricts rotation in the unlocking direction b, and a pin 81 is provided inside the lock case 20. The nail plate 82 is projected and supports the nail plate 82 by the pin 81.
A spring (not shown) is connected to the pawl plate 82 and urges it so that the tip of the claw plate engages with the tooth 51 of the drive gear 50 obliquely from above.

The regulation releasing mechanism 90 is provided with the operating member 7
0 is for releasing the restricting operation of the restricting mechanism portion 80, and the cam plate 91 has an engaging projection 92 that engages with the operating member 70, and the engaging projection 92 has an operating member. 70
When pressed against the pressing member 93, the pressing piece 93 protrudes in the direction of the restricting mechanism portion 80 and separates the claw plate 82 from the drive gear 50.
And

Next, the operation of the horseshoe lock having the above structure will be described. In the unlocked state, the key 42 is inserted into the key hole 41 of the rotor 40, the locking portion 31 of the latch 30 is retracted inside the annular guide portion 21, and the opening portion 23 is opened.

At the time of locking, when the key 42 is rotated in the locking direction, the rotor 40 is rotated and the operating member 70 is integrally rotated. At this time, the actuating member 70 is the protrusion 5 of the drive gear 50.
2 is hooked to rotate the drive gear 50 in the locking direction a. Since the drive gear 50 meshes with the meshing portion 32 of the bolt 30, the bolt 30 slides on the annular guide portion 21 by the rotation of the drive gear 50, and the hooking portion 31 projects from the open end 23A to the open portion 23. , Further open end 23B
Further, it enters the annular guide portion 21, and the opening portion 23 is closed. Although the spring force of the spring 60 always acts on the bolt 30, the claw plate 82 of the restriction mechanism 80 engages with the teeth 51 of the drive gear 50 to rotate the drive gear 50 in the unlocking direction b. Since it is regulated, even if the turning force of the key 42 is released, the spring 30 does not cause the bolt 30 to return. When the key operation is performed until the tip of the hooking portion 31 of the bolt 30 comes into contact with the stopper 25 in the annular guide portion 21, each disk 44 of the rotor 40 reaches the same angular position as the engaging groove 43 of the cylindrical case 27 and faces each other. In order to operate the key 42,
Can be extracted more.

Next, when unlocking, when the key 42 is inserted into the key hole 41 and is rotated in the unlocking direction, the operating member 70 is rotated integrally with the rotor 40. During this rotation, the operating member 7
0 abuts on the engaging projection 92 of the cam plate 91 and presses it. By this pressing, the cam plate 91 follows the actuating member 70, and the pressing piece 93 of the cam plate 91 projects toward the regulating mechanism portion 80 to push the pawl plate 82 and separate it from the drive gear 50. As a result, the restriction of the rotation of the drive gear 50 in the unlocking direction b is released, and the spring force of the spring 60 causes the bolt 30 to slide in the annular guide portion 21 in the opposite direction to return to the opening portion 23. Is released.

[0026]

As described above, according to the present invention, since the lock can be reciprocated only by operating the key to lock and unlock the lock, the structure of the conventional operation lever is not required, and the external structure is eliminated. Is simplified and the operability is also improved. Moreover, there is no risk of malfunction due to collision with objects,
The safety is also improved. Moreover, when unlocking, the rotor can be operated by key operation.
When the is rotated in the unlocking direction, the drive gear is automatically regulated.
It is released and the spring force of the spring unlocks the bolt
Since the latching part opens the opening part, the unlocking operation is easy and
Can be done quickly.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a horseshoe lock according to the present invention is attached to a bicycle.

FIG. 2 is a perspective view showing an appearance of a horseshoe lock according to the present invention.

FIG. 3 is a front view of the lock body.

FIG. 4 is a plan view showing the internal structure of the lock body.

FIG. 5 is a plan view showing the internal structure of the lock body.

FIG. 6 is an exploded perspective view showing a rotor, a drive gear, and respective components of a drive mechanism.

FIG. 7 is an explanatory diagram showing the structure and operation of a rotor.

FIG. 8 is a plan view showing a conventional horseshoe lock.

[Explanation of symbols]

 10 lock body 11 holder 20 lock case 21 annular guide part 22 mechanism accommodating part 24 opening part 30 skyscraper 31 hooking part 32 meshing part 40 rotor 41 keyhole 42 key 50 drive gear 53 locking mechanism part 55 drive mechanism 60 spring 70 operation Member 80 Control mechanism 90 Control release mechanism

Claims (1)

(57) [Claims] 1. A lock main body, and the lock main body is made to face a wheel.
A horseshoe lock comprising a holder for fixing to a vehicle body in a state , wherein the lock main body has an annular guide portion having an opening in the middle, and a mechanism accommodating portion provided adjacent to the annular guide portion. A lock case provided with the lock case is supported so as to be reciprocally movable along the annular guide portion of the lock case, and a hooking portion is formed on the distal end side to reciprocate in the open portion of the annular guide portion. The lock is formed with a meshing portion composed of a plurality of teeth, and is supported by the opening formed in the mechanism accommodating portion of the lock case so as to be able to rotate forward and backward freely, and the key is inserted into the keyhole inside. A rotor incorporating a lock mechanism that operates by disengagement, a drive gear that can be rotated in the forward and reverse directions and that is disposed inside the mechanism housing portion of the lock case in a state of meshing with the meshing portion of the bolt, and of the lock case. Drive with the rotor inside the mechanism housing And a drive mechanism of a drive gear interposed between the drive gear and the gear, wherein the drive mechanism rotates the drive gear in the locking direction in response to rotation of the rotor in the locking direction. A locking mechanism section, a spring for urging the bolt in the unlocking direction, a restricting mechanism section for permitting rotation of the drive gear in the locking direction and restricting rotation in the unlocking direction, and a unlocking of the rotor. A horseshoe lock including a restriction release mechanism section that releases the restriction operation of the restriction mechanism section in response to rotation in the locking direction.