JP2010285827A - Horseshoe lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horseshoe lock which can prevent a latch from sliding to a locking position by securely fixing the latch in a case when it is unlocked. <P>SOLUTION: An engagement groove 18 is formed on the latch 4 in proximity to the lever 10 on the sidewall on the outer peripheral surface side of the case 2. On the other hand, a safety button 14 is provided to the case 2, and the safety button 14 is constituted by an L-shaped button body 20, an engagement projection 22, and a coil spring 24. One end of the L-shape of the button body 20 is stored in the case 2 in a state where it is projected from the outer peripheral surface of the case 2, and the corner 20a of the L-shape is pivoted in the case 2 so that it can rotate. The engagement projection 22 projected from the button body 20 can be brought into engagement with the engagement groove 18 of the latch 4, and the coil spring 24 energizes the engagement projection 22 to the latch 4 side. In an unlocking state, the engagement projection 22 is brought into engagement with the engagement groove 18, and the latch 4 is fixed in a state where it is impossible for the latch 4 to slide. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a horseshoe lock mounted on a locked body such as a bicycle.

  Conventionally, a horseshoe lock attached to a bicycle body is known as a bicycle locking device. This type of horseshoe lock is a kanuki that can slide between a hollow case that is curved in an arc shape, a locking position that is housed in the case and that bridges both ends of the case, and an unlocking position that is housed in the case. And a coil spring or the like that is housed in the case and biases the cannula in the unlocking direction. By sliding the cannula between the spokes of the wheel, the wheel cannot be rotated and is locked. However, the deterioration of the coil spring and the contact of luggage with the lever for operating the cannula will cause the cannula to slide from the unlocked position to the locked position while the bicycle is running, causing damage or falls of the bicycle. It sometimes occurred.

  Therefore, as a method for solving the above problem, an engaging protrusion that is displaceable in a direction perpendicular to the sliding direction of the cannula is provided on a lever that protrudes from the cannula and protrudes outside the case through a slit formed in the case. At the same time, the case is provided with an engagement hole that engages with the engagement protrusion. At the unlocked position, the engagement protrusion is displaced inward of the case to engage with the engagement hole of the case. A method for preventing sliding has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 3140658

  However, even with the above proposed method, the user's skirt wraps around the lever when traveling, or the child's shoes get caught when traveling with the child on the lever. The provided engaging protrusion is pulled together with the lever to the outside of the case, and the engaging protrusion is accidentally released from the engaging portion, so that the kanuki may slide to the locked position.

  This invention is made | formed in view of such a problem, and it aims at providing the horseshoe lock which can fix a kanuki reliably in a case at the time of unlocking, and can prevent a kanuki from sliding to a locking position.

  The invention according to claim 1, which has been made to achieve such an object, includes a hollow case that is curved in an arc shape and has a slit formed in a side wall thereof, and a locking position that bridges both ends of the case in the case. And a unlocking position accommodated in the case and slidably housed, and a cannula having a lever projecting out of the case through the slit, and cannula stored in the case, A horseshoe lock provided with a first biasing member that biases in the unlocking direction, and a locking mechanism that is fixed to the case and that locks the cannula at the locking position. A movable part displaceable in a direction perpendicular to the sliding direction is provided, and the cannuki is engaged with each other when the movable part is displaced to the cannula side in the unlocked position, in the locking direction of the cannula. Wherein the engaged portion to prevent movement is formed.

  As described above, the horseshoe lock of the present invention is formed in the movable part and the movable part as the movable part provided in the case is displaced to the movable part when the locking mechanism is unlocked and the movable part moves to the unlocked position. Since the engaged portion is engaged and the movement of the cannula in the locking direction is prevented, the cannula can be reliably fixed in the case at the time of unlocking.

  Also, when locking, the movable part can be disengaged between the movable part and the engaged part of the cannula by displacing the movable part to the opposite side of the cannula, that is, the outer side of the case. Can be slid to and locked.

  Next, the movable part of the horseshoe lock according to claim 1 is formed in an L shape as described in claim 2, and the hole for attaching the movable part formed at one end of the L shape on the side wall of the case It is housed in the case so that it protrudes out of the case through the body, and a L-shaped corner is pivotally supported in the case so as to be pivoted in the case, and an end portion in the case of the main body is projected. In addition, the engaging portion that can be engaged with the engaged portion of the cannula and a second urging member that urges the engaging portion toward the cannula may be used.

  If it does in this way, since the main part of a movable part is pressed against the urging | biasing force of a 2nd urging member, since the engaging part of a movable part and the to-be-engaged part of a cannula can be cancelled | released easily. Good workability when locking.

  The movable part of the horseshoe lock according to claim 1 or 2 is fixed to the case so that the movable part of the horseshoe lock is located in the vicinity of the lever when the kanuki is in the unlocked position. May be.

  In this way, since the position of the movable portion and the lever is close, the movable portion can be displaced with one hand to release the engagement and the lever can be slid, and a locking operation with one hand becomes possible.

  Furthermore, in the horseshoe lock according to any one of claims 1 to 3, as described in claim 4, the slit is formed on one side of the case, and the movable part is provided on the outer peripheral surface of the case. May be.

  If it does in this way, since a movable part protrudes on the outer peripheral surface of a case, when it attaches to a bicycle, a movable part is located in the attachment surface side of the lever which protruded on the surface on the opposite side to the attachment surface to a bicycle. It will be. For this reason, since a load etc. contact a lever before contacting a movable part, it can prevent that a movable part is operated accidentally and engagement with a cannula is released and a cannula slides to a locking position.

It is a perspective view which shows the external appearance of the horseshoe lock 1 in the unlocked state. It is a perspective view which shows the external appearance of the locked state of the horseshoe lock. It is explanatory drawing which shows the engagement state of the kanuki 4 and the safety button 14 at the time of unlocking. It is explanatory drawing which shows the engagement state of the kanuki 4 and the safety button 14 at the time of locking. It is a perspective view which shows the attachment state to the bicycle of the horseshoe lock.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an unlocked state of the horseshoe lock 1 of the present embodiment, and FIG. 2 is a perspective view showing a locked state of the horseshoe lock 1 of the present embodiment.

  As shown in FIGS. 1 and 2, the horseshoe lock 1 of this embodiment is curved in an arc shape, and has a hollow case 2 in which a slit 6 is formed on one side surface and a hole 8 is formed on an outer peripheral surface. The case 2 is slidably housed between a locking position (see FIG. 2) for bridging both ends of the case 2 and an unlocking position (see FIG. 1) housed in the case 2, and a slit 6 is provided. A cannula 4 provided with a lever 10 protruding outside the case 2 and a coil spring 12 having one end fixed in the case 2 and the other end fixed to the cannula 4 to urge the cannula 4 in the unlocking direction. (See FIG. 3), a safety button 14 that engages the cannula 4 in the case 2 and fixes the cannula 4 in the unlocked position, and is fixed to the end of the case 2 on the side where the cannula 4 is stored, Cylinder that secures Kanuki 4 in the locked position And 16, and a.

  The slit 6 provided in the case 2 is formed in a circular arc shape with a constant width along the outer periphery of the case 2 from the center of the arc of the case 2 to the end on the cylinder lock 16 side. 10 is slidable between the unlocked position and the locked position along the slit 6.

  FIG. 3A is an explanatory view showing an engaged state between the cannulas 4 and the safety button 14 when unlocked, and FIG. 4A shows an engaged state between the cannulas 4 and the safety button 14 when locked. It is explanatory drawing and is the figure which looked at the horseshoe lock 1 from the side surface on the opposite side to the surface in which the lever 10 was respectively provided, and is a figure of the state which removed a part of case 2. FIG. FIGS. 3B and 4B are enlarged views showing the shape of the safety button 14 and the engaging portion between the safety button 14 and the cannula 4.

  As described above, the lever 10 is attached to the cannuki 4 so that the lever 10 protrudes from the side wall of the case 2 where the slit 6 is formed, and as shown in FIG. An engaging groove 18 is formed in the vicinity of 10 (in the drawing, in the vicinity of the mounting portion 4a of the lever 10) to which the safety button 14 is engaged.

  On the other hand, the safety button 14 is formed in an L shape as shown in FIG. 3B, and one end of the L shape is protruded from the outer peripheral surface of the case 2 through the hole 8 of the case 2. And a button body 20 whose L-shaped corner portion 20a is pivotally supported in the case 2 so as to be pivotable, and projectingly provided at an end portion of the button body 20 in the case 2, The engaging projection 22 is engageable with the mating groove 18, and the coil spring 24 biases the engaging projection 22 toward the cannula 4. Note that the engagement groove 18 of the kanuki 4 is formed on the side wall of the kanuki 4 so as to engage with the engagement protrusion 22 when the kanuki 4 is in the unlocked position.

  In this embodiment, the coil spring 12 is the first urging member of the present invention, the safety button 14 is the movable part of the present invention, the cylinder lock 16 is the locking mechanism of the present invention, and the engagement groove 18 is the engaged member of the present invention. The joint portion, the button main body 20 corresponds to the main body of the present invention, the engaging protrusion 22 corresponds to the engaging portion of the present invention, and the coil spring 24 corresponds to the second urging member of the present invention.

  In the horseshoe lock 1 configured as described above, the engagement protrusion 22 of the safety button 14 provided on the case 2 is biased against the coil spring 24 as shown in FIG. 3 when the cannula 4 is in the unlocked position. Thus, the engagement groove 18 is engaged. For this reason, the cannuki 4 cannot be slid in the unlocking direction and is securely fixed in the case 2.

  Here, when the locking operation is artificially performed, as shown in FIG. 3, the button body 20 is in a direction against the urging force of the coil spring 24, that is, the tangential direction of the outer periphery of the case 2 (direction of arrow C in the figure). The safety button 14 is rotated and the engagement protrusion 22 is moved in a direction perpendicular to the outer periphery of the case 2 to release the engagement, and the lever 10 near the button body 20 is moved to the case. 2 is pressed in the tangential direction of the outer periphery of 2 (direction of arrow C in the figure), and kanuki 4 is slid. Then, when the cannula 4 moves to the locking position, as shown in FIG. 4, the claw (not shown) of the cylinder lock 16 engages with the groove 4b formed on the cannula 4, and the cannula 4 is fixed at that position. Is done. Therefore, the kanuki 4 can be slid and locked by pressing the lever 10 in the same direction while pressing the button body 20, and when the kanuki 4 is in the unlocked position, the button body 20 is Because it is in the vicinity of, the operability is extremely good and can be easily locked with one hand.

  On the other hand, the cylinder lock 16 can be operated with a detachable key, and the engagement between the cylinder lock 16 and the cannula 4 is released by twisting the key. When the engagement between the cylinder lock 16 and the cannula 4 is released, the cannula 4 is drawn into the case 2 by the elastic force of the coil spring 12 and slides in the unlocking direction. At this time, the engagement protrusion 22 of the safety button 14 is urged toward the cannula 4 by the coil spring 24 and slides on the outer periphery of the cannula 4. When the cannuki 4 moves to the unlocking position and the engagement groove 18 comes to a position where it can engage with the engagement protrusion 22, the engagement protrusion 22 is biased toward the cannuki 4 by the coil spring 24. Therefore, the engagement protrusion 22 and the engagement groove 18 are automatically engaged. For this reason, by twisting the key, the cannula 4 slides in the unlocking direction and is securely fixed at the unlocking position.

  Further, the button body 20 protrudes on the outer peripheral surface of the case 2, and when the horseshoe lock 1 is attached to the bicycle 28 as shown in FIG. Is in the unlocked position, the safety button 14 is located behind the lever 10. For this reason, since the load or the child's foot first contacts the lever 10, the button body 20 is accidentally pressed, and the engagement groove 18 of the cannula 4 and the engagement protrusion 22 of the safety button 14 are engaged. It is cancelled | released and it can prevent that Kanuki 4 slides to a locking position at the time of driving | running | working.

As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention can take a various form.
For example, in the present embodiment, the lever 10 is protruded on one side surface of the case 2 and the safety button 14 is provided on the outer peripheral surface side of the case 2. A safety button 14 may be provided. Further, a safety button 14 may be provided on the same side as the lever 10.

  In the present embodiment, the safety button 14 includes an L-shaped button body 20, an engagement protrusion 22, and a coil spring 24, and presses the button body 20 in the tangential direction of the outer peripheral surface of the case 2. By doing so, the engagement between the engagement protrusion 22 and the engagement groove 18 is released, but the shape of the button body 20 does not have to be L-shaped, and the button body 20 is attached to the outer peripheral surface of the case 2. The engagement between the engagement protrusion 22 and the engagement groove 18 may be released by pulling outward.

  Furthermore, in the present embodiment, the safety button 14 is disposed in the vicinity of the lever 10, but the safety button 14 may be disposed anywhere as long as it can be engaged with the cannula 4 when unlocked. It may be the back of the cylinder lock 16 that is difficult to contact, or a place that is under the loading platform 26 when attached to a bicycle.

DESCRIPTION OF SYMBOLS 1 ... Horseshoe lock, 2 ... Case, 4 ... Kanuki, 4a ... Mounting part, 4b ... Groove, 6 ... Slit, 8 ... Hole, 10 ... Lever, 12 ... Coil spring, 14 ... Safety button, 16 ... Cylinder lock, 18 ... engagement groove, 20 ... button body, 20a ... corner, 22 ... engagement protrusion, 24 ... coil spring, 26 ... loading platform, 28 ... bicycle

Claims (4)

A hollow case that is curved in an arc shape and has a slit formed in the side wall;
The case includes a lever that is slidably housed between a locking position that bridges both ends of the case and an unlocking position that is housed in the case, and that protrudes out of the case through the slit. Kanuki and
A first biasing member housed in the case and biasing the kanuki in the unlocking direction;
A locking mechanism fixed to the case and fixing the kanuki at the locking position;
A horseshoe tablet with
The case includes a movable part that is displaceable in a direction perpendicular to the sliding direction of the kanuki,
The cannuki is formed with an engaged part that engages with each other and prevents the movement of the cannula in the locking direction when the movable part is displaced toward the cannula in the unlocked position. A characteristic horseshoe lock. A hole for attaching the movable part is formed on the side wall of the case,
The movable part is
It is formed in an L shape, and is housed in the case so that one end of the L shape protrudes out of the case through the hole of the case, and the corner of the L shape can be rotated in the case. A pivotally supported body,
An engaging portion that protrudes from an end of the main body in the case and is engageable with the engaged portion of the kanuki;
A second urging member that urges the engaging portion toward the cannula side;
The horseshoe lock according to claim 1, comprising:   3. The horseshoe lock according to claim 1, wherein the movable portion is fixed to the case so that the movable portion is positioned in the vicinity of the lever when the kanuki is in the unlocked position.   The horseshoe lock according to any one of claims 1 to 3, wherein the slit is formed on one side surface of the case, and the movable portion is formed on an outer peripheral surface of the case.

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