JP3972320B2 - Bicycle lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bicycle lock such as a chain lock or a wire lock, in addition to a bicycle ring lock attached to the rear hawk of a bicycle so as to straddle the rear wheel. It is characterized by being able to
[0002]
[Prior art]
For example, in the case of a bicycle ring lock, a lock having an axis orthogonal to the surface of the case body, as disclosed in Japanese Patent Application Laid-Open Nos. 8-120994 and 10-61201, which are filed by the present applicant. There is a mechanism which is provided with a mechanism and is unlocked by rotating a key inserted into a key hole provided on an outer end surface of the lock mechanism.
Moreover, as for the wire lock, there is a lock with a key hole protruding on the front surface of a flat case body as disclosed in, for example, Japanese Utility Model Laid-Open No. 7-1239.
[0003]
[Problems to be solved by the invention]
And, in this type of lock, for example, a bicycle ring lock, the rear side of the case is usually placed along the upper surface of the fork H after tilting toward the saddle post P as shown in FIG. It can be attached to the bicycle via the provided mounting bracket.
In addition, the lock mechanism of the ring lock has an axis perpendicular to the front and back surfaces of the case body and is provided on the left side of the case body so that the keyhole faces upward under the normal mounting condition as described above. This makes it easier to perform the unlocking operation.
[0004]
However, as shown in FIG. 5, when the base of the carrier stay S is attached to the upper surface of the rear fork H or when the caliper brake is attached to the bicycle, the lock is attached to the upper surface of the rear fork. For this reason, there may be a case where the back side of the case is reversed and the back side of the rear fork H is attached to the bottom side of the rear fork H as shown in the drawing.
When the conventional ring lock is mounted on the back surface, the front side of the case faces downward, and the keyhole faces backward and downward, making it difficult to perform unlocking operation with the key, resulting in the disadvantage that the usability of the key is impaired.
[0005]
On the other hand, the unlocking direction of the wire lock is limited to the front side where the key can be inserted, and when the lock is face down, it is necessary to change the direction to the front, and the direction can be changed depending on the state. Inconvenience occurs when not.
For this reason, the problem to be solved by the present invention is to eliminate the inconvenience of operation that occurs in the case of mounting on the back as described above by enabling the key unlocking operation from both the front and back sides of the lock. There is to do.
[0006]
[Means for Solving the Problems]
Accordingly, the present invention provides a stopper in the case body for latching the lock rod at the locking position, and is arranged symmetrically about the stopper, and on the axis perpendicular to the front and back surfaces of the case body, The two locking mechanisms of the same mechanism comprising a locking mechanism and a locking mechanism on the back side are provided, and the operating levers provided at the inner end portions of both mechanisms are engaged with the stoppers, respectively, A ring lock for bicycles that has a key hole on the outer end surface and can be unlocked from both the front and back sides of the case body using the same key. In this case, the bicycle ring lock is characterized in that the keyhole on the back side faces upward so that it is not inconvenient for the key insertion operation .
[0007]
For example, in the case of a ring lock, the lock of the present invention configured as described above has a key hole opened upward on the back side of the case when attached to the lower side of the rear fork as shown in FIG. Therefore, the unlocking operability substantially equivalent to that in the normal mounting position can be obtained.
In the case of a wire lock or a chain lock, the unlocking operation direction by the key is not limited to one direction, and the convenience of operation is improved.
[0008]
In addition, when the present invention is used for a ring lock, the shape of the lock bowl and the case main body each having a substantially circular cross section eliminates a large difference in the shape of the front and back surfaces of the lock, so there is little discomfort when mounted on the back surface. There are advantages.
Further, in the present invention, the one using two sets of cylinder lock mechanisms that are symmetrical on the front and back with the stopper as the center has high operability and certainty of locking, and can obtain a user-friendly lock. .
[0009]
【Example】
Embodiments in which the present invention is applied to a bicycle ring lock will be described below with reference to the drawings.
In the figure, 1 is a hollow case with a substantially circular cross section and is formed in a circular arc shape with both ends facing each other, and 2 is an operation knob 3 provided on one side protruding from the side surface of the case body 1. A lock rod 4, which is slidably fitted in the case body together with a restoring spring (not shown) and has a substantially circular cross section in cross section, has an axis perpendicular to the front and back surfaces of the lock on the side surface of the case body 1. The lock case portion 5 is provided integrally with the lock case 5, a lock mechanism is rotatably fitted in the lock case portion, and 6 is a pair of left and right mounting brackets attached to the back surface of the case body 1.
[0010]
As shown in FIGS. 1 and 2, key holes 7a and 7b are provided on both outer end surfaces of the lock mechanism 5 for the front side and the back side, respectively. Further, as shown in FIG. 3, the lock mechanism 5 is composed of two sets of cylinder lock mechanisms 5a and 5b for the front side and the back side that are fitted up and down from the front side and the back side of the lock case portion 4, respectively. .
Both cylinder lock mechanisms 5a and 5b have the same structure, and are connected to operating levers 8a and 8b provided in the same manner as a conventionally known cylinder lock mechanism so as to rotate integrally with the inner end, respectively. The pins 9a and 9b provided on the upper side are respectively engaged with stoppers 10 which are formed in a U-shape and are slidably fitted in the center of the lock case portion 4 in the horizontal direction in the figure.
[0011]
The stopper 10 is constantly urged to the left in the figure by the urging spring 11 inside the lock case portion 4 and presses against the lock rod 2 from the side.
The stopper 10 is fitted into a notch 12 provided at a predetermined position when the lock 2 is advanced from one opening to the other opening against the restoring spring by the operation knob 3. The lock bowl 2 is held in a locked state.
[0012]
When the ring lock configured as described above is attached to a bicycle as usual, the front side is the upper side as shown in FIG. 4 and can be used as usual. Further, when the rear surface is attached as shown in FIG. 5, the direction of the key hole 7b opened on the rear surface side is changed upward, so that the operation for inserting the key 13 is not inconvenient.
As shown in FIG. 3, the two pins 9 a and 9 b that engage with the stopper 10 can be moved individually in the recess 14 of the stopper 10 so as to face each other in a butting manner. Since it is provided so that it can move left and right without interfering with each other within the width of 14, the unlocking operation from the front side and the unlocking operation from the back side can be performed without any trouble.
[0013]
In this embodiment, the U-shaped member is slid on the stopper for locking the lock rod 4 as described above. However, when a lever lever plate is used as in the conventional ring lock, for example. The engaging shape of the stopper and the operating lever is not limited to the illustrated form, for example, an engaging portion with the pin of the operating lever is provided on the front and back surfaces of the plate.
[0014]
The illustrated embodiment is the most preferred example of the present invention, and the case main body 1 and the lock basket 2 are both substantially circular in cross section, but the mode of each member is appropriately changed in design according to the gist of the present invention. It goes without saying that it is done.
Furthermore, when the present invention is applied to wire locks and chain locks, the front and back sides of the case body are provided with keyholes, so that the unlocking operation from both sides of the front and back is possible, and the directionality of the operation is expanded. Needless to say.
[0015]
【The invention's effect】
According to the present invention configured as described above, even when the rear fork is mounted on the back side, the keyhole is directed upward so that the key unlocking operation can be easily performed. It can be expected to have extremely excellent effects such as eliminating the property.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a perspective view showing a back surface of the embodiment. FIG. 3 is an enlarged sectional view of a lock mechanism portion. FIG. 4 is a side view showing a normal mounting state. FIG. 5 is a side view when the embodiment is mounted on the back surface.
[Explanation of sign]
1 Case body 2 Lock rod 3 Operation knob 4 Lock case 5 Lock mechanism (5a Front side lock mechanism 5b Back side lock mechanism)
6 Mounting bracket 7 Key hole (7a Key hole on the front side 7b Key hole on the back side)
8 Actuation lever (8a front side 8b back side)
9 pin (9a front side pin 9b back side pin)
10 Stopper 11 Biasing spring 12 Notch 13 Key 14 Recess

Claims (3)

A stopper is provided in the case main body to lock the lock rod at the locking position, and is arranged symmetrically around the stopper, and on the axis perpendicular to the front and back surfaces of the case main body, the front side locking mechanism and the back side The two locking mechanisms of the same mechanism comprising the locking mechanism are provided, and the operating levers provided at the inner end portions of both mechanisms are engaged with the stoppers, respectively, while the outer end surfaces of the two sets of locking mechanisms are respectively keyholes. Is a bicycle ring lock that can be unlocked from both the front and back sides of the case body using the same key, and when the back side is attached to the underside of the hawk, A bicycle ring lock characterized in that the keyhole on the back side faces upward so that the key insertion operation is not inconvenient . The bicycle lock according to claim 1, wherein the lock basket and the case main body are bicycle ring locks each having a substantially circular cross section and formed in a concentric arc shape. 2. The bicycle lock according to claim 1, wherein the lock mechanism is constituted by two sets of cylinder lock mechanisms arranged symmetrically on the front and back sides with the stopper as a center.

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