JP2007289337A - Fastener lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastener lock capable of preventing the lock from being easily released by a vibration/impact, etc. and preventing the lock of a latch from being easily released by inserting a thin plate, etc. into a lock hole. <P>SOLUTION: The fastener lock 100 comprises a lock part 41 with the lock hole 45 into which a tab piece 35 can be inserted from the end 35a; a locking hole 43 penetrating the front/rear of the tab piece 35; a tapered face 47 formed at the end 35a of the tab piece 35 to be tapered; the latch 49 provided at the lock part 41 to be fitted into the locking hole 43; a return projection 55 projectingly provided at the end of fitting of the latch 49 in the direction of insertion to be locked to the rear edge 43a of the locking hole 43; an energizing means 57 provided at the lock part 41 for energizing the tab piece 35 in the direction of forcing the tab piece out of the lock hole 45; and an abutting face 59 disposed on a face opposite to the lock hole opening of the latch 49 and formed nearly perpendicular to the direction of insertion of the tab piece 35. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fastener lock that locks a tab of a fastener slider so that opening and closing edges to which a pair of toothed tapes are fixed cannot be opened.

  For example, a bag, suitcase, etc. whose edges are opened and closed by fasteners are fixed to each of the opening and closing edges by engaging and disengaging these tooth rows with a slider. Opening and closing can be done easily. In this kind of scissors or the like, as shown in FIG. 6, an opening / closing edge portion is obtained by inserting and locking a knob 3 provided on the slider 1 into a lock hole 7 of a lock portion 5 provided on the scissors body. Fastener locks 9 that cannot be opened from each other may be provided (see, for example, Patent Document 1).

  Conventionally, this type of fastener lock 9 includes a latch 11 in the lock portion 5. The latch 11 has a latch claw 15 that enters and locks into a locking hole 13 formed in the knob piece 3, and is biased in a locking direction (downward in FIG. 6) by a coil spring 17 that is a biasing means. Yes. An inclined surface 19 is provided on the surface of the latch claw 15 facing the lock hole opening, and the inclined surface 19 works to push up the latch 11 by pressing the tip 3 a when the knob 3 is inserted.

Therefore, when the knob 3 is inserted into the lock hole 7, the tip 3 a of the knob 3 presses the inclined surface 19 of the latch claw 15, thereby pushing up the latch 11. After the latch claw 15 rides on the tip 3a, when the knob 3 is further inserted and the locking hole 13 reaches the latch claw 15, the latch 11 is locked by the biasing force of the coil spring 17 as shown in FIG. Enter 13 As a result, the knob 3 is locked to the locking surface 15a of the latch claw 15 so as to be prevented from being removed from the lock portion 5, and is brought into a locked state in which the rib edges cannot be opened by releasing the fastener. The latch 11 is unlocked by inserting a key into a lock device (not shown) provided in the lock unit 5 and turning the key to retract and unlock the latch 11.
Utility Model Registration No. 3107816

  However, in the conventional fastener lock, the latch claw 15 enters and locks into the locking hole 13 only by the urging force of the coil spring 17, so that a force in the pulling direction (left direction in FIG. 7) acts on the knob 3. When an inertial force in the removal direction (upward in FIG. 7) acts on the latch 11 due to vibration or impact, there is a problem that the latch claw 15 comes out of the locking hole 13 depending on the timing.

  Further, since the latch claw 15 has the inclined surface 19 formed on the entire surface facing the lock hole opening, as shown in FIG. 8A, the latch claw 15 is formed in the gap S of the lock hole 7 in which the knob 3 is inserted. If the thin plate 21 or the like is inserted, the inclined surface 19 is pressed by the tip, the latch 11 is pushed up, and the latch pawl 15 is removed from the locking hole 13 as shown in FIG. There was a risk of becoming possible.

  The present invention has been made in view of the above situation, and is not easily unlocked due to vibration or impact, and the latch is not easily unlocked from the locking hole even if a thin plate or the like is inserted into the lock hole. An object is to provide a fastener lock and thereby improve locking reliability and security.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The fastener lock according to claim 1 of the present invention locks the substantially plate-like tab 35 of the fastener slider 33 so that the opening and closing edges to which the pair of toothed tapes 39a and 39b are fixed cannot be opened. A fastener lock 100 for
A lock portion 41 having a lock hole 45 that allows the knob 35 in a posture parallel to the slider closing movement direction to be inserted from the tip 35a;
A locking hole 43 penetrating the front and back of the knob 35;
A tapered surface 47 formed to be tapered at the tip of the knob 35;
A latch 49 provided in the lock portion 41 and fitted into the locking hole 43;
A return protrusion 55 that protrudes from the insertion tip of the latch 49 in the insertion direction and is engaged with the rear edge 43a of the engagement hole 43;
A biasing means 57 that is provided in the lock portion 41 and biases the knob 35 in a direction of pushing out the lock hole 45 from the lock hole 45;
Provided on the surface facing the lock hole opening of the latch 49, the base end side of the latch 49 fitted with the distal end side into the latch hole 43 does not fit into the latch hole 43, and is substantially perpendicular to the insertion direction. A contact surface 59 formed on
It is characterized by comprising.

  In this fastener lock, when the knob 35 is inserted into the lock hole 45, the latch 49 is inserted into the locking hole 43 of the knob 35. The urging means 57 urges the knob 35 in the direction of pushing back, so that the inner edges of the locking hole 43 and the locking hole 45 come into contact with each other, and the return protrusion 55 at the latch tip is behind the locking hole. Engage with the edge 43a. Therefore, the latch 49 does not easily come off from the locking hole 43 due to the return protrusion 55. Further, even if the thin plate 21 is inserted into the gap with the knob 35 in the lock hole 45, the thin plate tip only comes into contact with the perpendicular contact surface 59 of the latch 49 at the insertion destination.

The fastener lock according to claim 2 is provided with a lock device and a release mechanism driven by the lock device in the lock portion 41,
The release mechanism is characterized in that an urging force in a direction of retreating from the locking hole 43 is applied to the latch 49 by unlocking and rotating the key inserted in the lock device.

  In this fastener lock, the knob 35 is resisted against the urging force of the urging means 57 directly or via the slider 33 in a state where the lock is rotated and the urging force in the withdrawal direction is applied to the latch 49. Then, when the lock hole 45 is pushed inward, the latching of the return protrusion 55 with respect to the locking hole 43 is released, and the latch 49 is retracted from the locking hole 43 by the urging force of the release mechanism.

  The fastener lock according to claim 3 is characterized in that the release mechanism moves the latch 49 in the unlocking direction of the return projection 55 by the unlocking rotation of the key inserted in the lock device. .

  In this fastener lock, a biasing force in the withdrawal direction is applied to the latch 49 only by the rotation of the key, and the knob piece 35 is moved, and the locking of the return projection 55 with respect to the locking hole 43 is released, that is, the biasing force. The urging force of the means 57 is canceled, and the latch 49 is retracted from the locking hole 43 by the urging force of the release mechanism.

  The fastener lock according to claim 4 is characterized in that the locking device is a cylinder lock.

  In this fastener lock, it is necessary to operate the release mechanism by inserting the key into the cylinder lock even before the unlocking operation of the release mechanism.

  According to the fastener lock of the first aspect of the present invention, the locking hole penetrating the front and back of the knob piece, the tapered surface of the knob piece tip, the latch inserted into the locking hole, and the tip of the latch projecting. Because it is provided with a return projection that is provided and locked in the locking hole, a biasing means that biases the knob piece in the pushing direction, and a contact surface formed substantially perpendicular to the insertion direction on the base end side of the latch When the knob piece is inserted into the lock hole, the latch is inserted into the latch hole of the knob piece, and the urging means urges the knob piece in the direction to push back, so that the return projection at the latch tip is behind the latch hole. Engage with the edge. Therefore, the latch is prevented from being pulled out from the locking hole by the return protrusion, and the unlocking due to vibration, impact, or the like is reliably prevented. Also, even if a thin plate is inserted into the gap with the knob in the lock hole, the tip of the thin plate only hits the contact surface perpendicular to the latch at the insertion destination. With this component force, the latch cannot be pushed up in the direction to be removed from the locking hole. As a result, the locked state can be ensured and the locking reliability can be improved, and unauthorized unlocking by inserting a thin plate can be prevented to improve the security.

  According to the fastener lock of claim 2, the lock portion is provided with the lock device and the release mechanism driven by the lock device, and the release mechanism is latched by the unlocking rotation of the lock key inserted in the lock device. Since the urging force in the direction of retreating from the locking hole is applied, the key is rotated, and the urging force in the retraction direction is applied to the latch, either directly or via the slider, If it is pushed into the lock hole against the urging force of the urging means, the locking of the return projection with respect to the locking hole is released, and the latch retreats from the locking hole by the urging force of the release mechanism, causing a click feeling. With a clear unlocking feeling, the knob can be unlocked from the locking portion.

  According to the fastener lock of claim 3, the unlocking mechanism moves the latch back in the unlocking direction of the protrusion by the unlocking rotation of the key inserted in the locking device. The urging force is applied, the knob is moved, the locking of the return protrusion with respect to the locking hole is released, and the latch is retracted from the locking hole by the urging force of the release mechanism. Thus, the knob can be unlocked from the lock portion by an easy unlocking operation (ie, an operation that does not require the pressing of the knob) by only rotating the key.

  According to the fastener lock of claim 4, since the locking device is a cylinder lock, the unlocking mechanism must be operated by inserting the key into the cylinder lock even before the unlocking operation of the unlocking mechanism. First, compared to a simple lock device that directly releases the lock mechanism of the lock portion with the key (for example, a lock device that directly operates the latch by the rotation operation of the key), the crime prevention property of the entire fastener lock can be improved.

Hereinafter, preferred embodiments of a fastener lock according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view in a direction perpendicular to a tab of a fastener lock according to the present invention, and FIG. 2 is a perspective view of a fastener provided with the fastener lock according to the present invention.

  The fastener lock 100 shown in FIG. 1 according to this embodiment is provided with a pair of service teeth 37a and 37b by locking a plate-like knob 35 provided on the slider 33 of the fastener 31 shown in FIG. Opening and closing edges (not shown) to which the tapes 39a and 39b are fixed cannot be opened. The knob 35 is locked by, for example, a lock portion 41 provided on the bag main body or the like. Thereby, opening and closing edges, such as a collar provided with the fastener 31, are locked so that opening is impossible.

  In the fastener lock 100 according to the present embodiment, a substantially rectangular plate-shaped knob 35 for opening and closing the slider 33 is provided with, for example, a rectangular locking hole 43 penetrating the front and back. The locking hole 43 is formed with a size W which is substantially the same as the outer shape of a latch which will be described later. In other words, the latch enters and fits into the locking hole 43 without substantial backlash. The knob 35 is inserted into the lock hole 45 of the lock portion 41 from the tip 35a in a posture parallel to the closing movement direction (left-right direction in FIG. 1) of the slider 33. The tip 35a of the knob 35 is provided with a tapered surface 47 formed to be tapered. The tapered surface 47 is formed of a slope formed only on one surface, for example, the surface side that is the surface, or the upper surface in FIGS. 1 and 2, and has a function of pushing up a latch 49 described later.

  A latch 49 is provided in the lock portion 41 so as to be movable in the vertical direction of FIG. 1, and a latch claw 51 suspended from the lower surface of the latch 49 is fitted into the locking hole 43. The latch 49 is urged in the direction of entering the locking hole 43 (downward in FIG. 1) by a coil spring 53 that is urging means. Further, a return protrusion 55 protruding in the knob insertion direction (right direction in FIG. 1) is provided at the insertion tip of the latch claw 51, and the return protrusion 55 can be locked to the back edge 43 a of the locking hole 43.

  The lock portion 41 is provided with a coil spring 57 as urging means for urging the knob 35 in the direction of pushing out the lock piece 45 from the lock hole 45. Therefore, the knob 35 that has entered the lock hole 45 and the latch claw 51 is fitted into the locking hole 43 is pushed back by the coil spring 57, so that the return protrusion 55 is hooked on the back edge 43 a and is pulled out from the locking hole 43. Movement in the upward direction (FIG. 1) is restricted.

  The lock unit 41 is provided with a locking device (not shown) and a release mechanism that is driven by the locking device. The release mechanism applies a biasing force in a direction in which the latch 49 is retracted from the locking hole 43 by the unlocking rotation of the key inserted in the locking device. The fastener lock 100 is provided with such a locking device and a release mechanism in the lock portion 41, so that the key is rotated, and a biasing force in the withdrawal direction (upward direction) is applied to the latch 49. If the knob 35 is pushed directly into the lock hole 45 against the urging force of the coil spring 57 directly or via the slider 33, the locking of the return protrusion 55 with respect to the locking hole 43 is released. Thereby, the latch piece 35 can be unlocked from the lock part 41 with a clear unlocking feeling that causes the latch 49 to retreat from the locking hole 43 by the urging force of the releasing mechanism and generate a click feeling.

  Here, the release mechanism may include a mechanism for moving the latch 49 in the unlocking direction of the return projection 55 by the unlocking rotation of the key inserted in the lock device. According to the configuration including such a latch moving mechanism, the unlocking mechanism moves the latch 49 in the unlocking direction of the return projection 55 by the unlocking rotation of the key inserted in the locking device. The latch 49 is applied with a biasing force in the retracting direction, and the knob 35 is moved to release the locking of the return protrusion 55 with respect to the locking hole 43, and the latch 49 is locked by the locking mechanism 43 with the biasing force of the release mechanism. Exit from. As a result, the knob 35 can be unlocked from the lock portion 41 by an easy unlocking operation (ie, an operation that does not require the knob 35 to be pushed) by only rotating the key.

  Moreover, as a locking device of the lock part 41, it is preferable to employ | adopt a cylinder lock. If the locking device is a cylinder lock, even before the unlocking operation of the release mechanism, a lock key must be inserted into the cylinder lock to activate the release mechanism. Compared to a simple lock device that directly releases the lock (for example, a lock device that directly operates the latch 49 by rotating the combined key), the security of the entire fastener lock 100 can be improved.

  Further, the fastener lock 100 is provided with a contact surface 59 formed substantially perpendicular to the insertion direction of the knob 35 on the surface facing the lock hole opening of the latch 49. The contact surface 59 is formed on the proximal end side of the latch 49 in which the distal end side is fitted into the locking hole 43. The latch claw 51 is formed with an inclined surface 19 below the contact surface 59, and the inclined surface 19 works to push up the latch 49 by the pressing of the tip 35a when the knob 35 is inserted. Here, as a relationship between the thickness of the knob 35, the height (width) of the lock hole 45, and the shape of the lock claw 51, the lock claw 51 is locked in the engagement hole 43 of the knob 35. Then, the joint edge (ridge line) between the inclined surface 19 and the contact surface 59 is set so as to be positioned in the locking hole 43 (see FIG. 4), that is, in the gap between the lock hole 45 and the knob 35. Surface 19 never appears.

Next, the operation of the fastener lock 100 configured as described above will be described.
FIG. 3 is a cross-sectional view in the middle of inserting a knob, FIG. 4 is a cross-sectional view in a locked state of a knob, and FIG. 5 is an explanatory view at the time of unauthorized unlocking by inserting a thin plate.
In the fastener lock 100, when the knob piece 35 is inserted into the lock hole 45, the tip 35 a of the knob piece 35 presses the inclined surface 19 of the latch 49, thereby pushing up the latch 49. As shown in FIG. 3, after the latch claw 51 rides on the tip 35a, the knob 35 is further inserted, and when the locking hole 43 of the knob 35 reaches the latch claw 51, as shown in FIG. 49 is fitted into the locking hole 43 by the biasing force of the coil spring 53. That is, the automatic locking is performed by the tapered surface 47 of the knob 35 and the inclined surface 19 of the latch claw 51.

  When the insertion force of the knob piece 35 is released, the knob piece 35 is urged in a direction in which it is pushed back by the coil spring 57. As a result, the back edge 43 a of the locking hole 43 engages with the return protrusion 55 of the latch claw 51. Accordingly, the latch claw 51 is prevented from being pulled out of the locking hole 43 by the return protrusion 55. Further, the knob 35 is locked to the locking surface 51 a of the latch claw 51 and is prevented from being pulled out from the lock portion 41, and is brought into a locked state in which the rib edges cannot be opened by opening the fastener 31.

  5A, even if the thin plate 21 is inserted into the gap S between the knob 35 inserted into the lock hole 45 and the lock hole 45 as shown in FIG. As shown in (b), the tip of the thin plate 21 only hits the contact surface 59 of the latch claw 51 at the insertion destination, and the latch 49 cannot be moved upward by pressing the inclined surface 19 as in the prior art. .

  The lock of the latch 49 can be released by inserting a key into a cylinder lock (not shown) provided in the lock unit 41 and turning the key. That is, in a state where the lock key is rotated and the latch 49 is applied with a biasing force in the withdrawal direction, the lock piece 45 is moved against the biasing force of the coil spring 57 directly or via the slider 33. When pushed in, the locking of the return projection 55 with respect to the locking hole 43 is released, and the latch 49 is retracted from the locking hole 43 by the urging force of the release mechanism. As a result, the fastener lock 100 is unlocked. Thereafter, the slider 33 can be moved only by pulling out the knob 35.

  Therefore, according to the fastener lock 100, the locking hole 43 penetrating the front and back of the knob 35, the tapered surface 47 at the tip of the knob 35, the latch 49 fitted into the locking hole 43, and the tip of the latch 49 are provided. A protruding protrusion 55 that protrudes and locks in the locking hole 43, a coil spring 57 that biases the knob 35 in the pushing direction, and a contact surface that is formed substantially perpendicular to the insertion direction on the proximal end side of the latch 49. 59, when the knob 35 is inserted into the lock hole 45, the latch 49 is inserted into the locking hole 43 of the knob 35, and the coil spring 57 urges the knob 35 in a direction to push it back. The return protrusion 55 at the leading end of the latch engages with the locking hole rear edge 43a.

  Accordingly, the latch 49 is prevented from being pulled out from the locking hole 43 by the return projection 55, and the unlocking due to vibration, impact, or the like is reliably prevented. Even if the thin plate 21 is inserted into the lock hole 45, the tip of the thin plate only hits the vertical contact surface 59 of the latch 49 at the insertion destination. The latch 49 cannot be pushed up in the direction to be removed from the locking hole 43 by the component force. As a result, the locked state can be ensured and the locking reliability can be improved, and the unauthorized unlocking by inserting the thin plate 21 can be prevented to improve the security.

  Further, since the abutment surface 59 is formed on the latch 49, the total length in the insertion direction of the latch claw 51 can be shortened. As a result, the locking hole 43 formed in the knob 35 can be reduced. Can be advantageously formed.

It is sectional drawing of the direction perpendicular | vertical to the knob | pick piece of the fastener lock which concerns on this invention. It is a perspective view of a fastener provided with a fastener lock according to the present invention. It is sectional drawing in the middle of picking piece insertion. It is sectional drawing of a pick piece lock state. It is explanatory drawing at the time of illegal unlocking by thin plate insertion. It is sectional drawing of the direction perpendicular | vertical to the knob | pick piece of the conventional fastener lock. It is sectional drawing in the middle of insertion of the knob piece in the conventional fastener lock. It is explanatory drawing at the time of the illegal unlocking by the thin plate insertion in the conventional fastener lock.

Explanation of symbols

31 ... Fastener 33 ... Slider 35 ... Picking piece 37a, 37b ... Teeth 39a, 39b ... Tape 41 ... Locking part 43 ... Locking hole 43a ... Back edge 45 ... Lock hole 47 ... Tapered surface 49 ... Latch 55 ... Return projection 57 ... Biasing means (coil spring)
59 ... Abutting surface 100 ... Fastener lock

Claims (4)

It is a fastener lock that makes it impossible to open the opening and closing edges to which the pair of toothed tapes are fixed by locking the tabs of the fastener slider,
A lock portion having a lock hole that allows insertion of the knob in a posture parallel to the slider closing movement direction from the tip;
A locking hole penetrating the front and back of the knob;
A tapered surface formed to be tapered at the tip of the knob;
A latch provided in the lock portion and fitted into the locking hole;
A return protrusion that protrudes in the insertion direction at the insertion tip of the latch and is engaged with the rear edge of the engagement hole;
An urging means for urging the knob in a direction to push out the knob from the lock hole;
It is formed on the surface facing the lock hole opening of the latch and formed at a base end side which is not fitted into the latching hole of the latch which is fitted at the distal end side into the latching hole and substantially orthogonal to the insertion direction. The contact surface,
A fastener lock characterized by comprising: The lock unit is provided with a lock device and a release mechanism driven by the lock device,
2. The fastener lock according to claim 1, wherein the release mechanism applies an urging force in a direction of retracting from the locking hole to the latch by an unlocking rotation of a key inserted in the lock device.   3. The fastener lock according to claim 2, wherein the release mechanism moves the latch in an unlocking direction of the return protrusion by unlocking rotation of a key inserted in the lock device.   The fastener lock according to claim 2 or 3, wherein the locking device is a cylinder lock.

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