JP2018168596A - Bag lock - Google Patents

Abstract

[Problem] A rotation limiting piece fixed to a pivot of a latching member does not directly contact a coil spring acting on the latching member even if the latching member rotates in conjunction with each operation of the latching member. To provide a bag lock capable of preventing its coil spring from being worn out even after long-term use. [Solution] A lock body 1 that is fixed to a bag body, a latch member 2 that is inserted into a fitting hole drilled in a latch plate that is attached to a cover and is rotatably supported on the lock body 1. , a rotation limiting piece 3 that is inserted into the pivot shaft 21 of the hanging member 2 and limits the rotation angle of the hanging member 2; The coil spring 4 has a shaped coil portion 41 inserted through the pivot 21, and the upright piece 32 is located inside the coil portion 41 of the coil spring 4, is fitted to the pivot 21, and is erected on the rotation restriction piece 3. and a protective member 5 that covers the. [Selection diagram] Figure 2

Description

  The present invention relates to a bag lock for fixing a cover to a bag body.

  Conventionally, in bags such as school bags, Kabuse can be fixed to a bag body by a bag lock. The bag lock includes a lock body, a latch member, and the like that are fixed to the bag body. The lock body is attached to the bottom of the bag body, and the latch member is rotatably attached to the bag body. The lock body has a through-hole, and the latch plate fixed to the end of the cover is locked by the rotation of the latch member with the shaft portion of the latch member inserted through the hole. Fixed to.

  For example, Patent Document 1 includes a lock body that is fixed to a bag body and a latch plate that is attached to a cover, and is provided on a bottom surface of a latch projection that engages with a fitting hole formed in the latch plate. The fixing body is inserted into a through hole provided in the lock body, inserted into a fixing hole of a box body separated from the lock body, and the tip of the fixing body is caulked. The body is projected on the surface of the lock body, the box is fixed inside the lock body, and a latching member whose outer shape is substantially the same is pivotally supported on the surface of the latching projection body, and is latched on the pivot axis. A first coil spring acting in the direction in which the member is rotated is provided, a first flange is provided on the pivot shaft of the latching member, and a first flange is secured to a stop plate provided by pivotally supporting one end in the box body, and provided in the box body. The rotation restricting piece protruding the second flange to be locked to the locking body is fixed, and the latching member stops at the position where it is aligned with the locking protrusion or the position rotated 90 degrees. By providing a second coil spring that acts in a direction to push down the stop plate at the other end of the stop plate, the biasing force of the first coil spring is released by the force applied to the stop plate, A bag lock is disclosed in which a rotation limiting piece locked to the coil spring is rotated and a latching member is rotated.

JP 2007-71013 A

  However, in the bag lock disclosed in Patent Document 1, when the rotation limiting piece is fixed to the pivot of the latching member, the opposing protruding piece that is in contact with the pivot and protrudes on the coil spring side of the rotation limiting piece is Since the inner side of the coil portion of the coil spring comes into contact with each other by rotating together when the stop member is operated, the inner side of the coil spring may wear due to use over time, and the coil spring may not function normally. There was a problem.

  Therefore, the present invention has been made in view of the above problems, and even if the rotation limiting piece fixed to the pivot shaft of the latching member rotates in conjunction with the operation of the latching member, the latching is achieved. It is an object of the present invention to provide a bag lock that does not directly contact a coil spring that acts on a member and can prevent the coil spring from being worn even when used for a long period of time.

  [1] That is, the present invention is inserted into the lock body (1) fixed to the bag body (B) and the fitting hole (P1) formed in the retaining plate (P) attached to the cover (C). The latch member (2) pivotally supported by the lock body (1) and the pivot (21) of the latch member (2) are inserted into the latch member (2). The rotation limiting piece (3) for limiting the rotation angle, at least one end thereof can be engaged with the engaging portion (31) of the rotation limiting piece (3), and the helical coil portion (41) is connected to the pivot ( 21) and a coil spring (4) inserted through the coil spring (4) and positioned on the inner side of the coil portion (41) of the coil spring (4). The coil spring (4) is fitted to the pivot (21) and stands on the rotation limiting piece (3). A bag lock comprising a protective member (5) for covering the installed standing piece (32).

  [2] The bag lock according to [1], wherein the protection member (5) is made of a material softer than the coil spring (4).

  [3] The bag lock according to [1] or [2], wherein the protective member (5) is made of a synthetic resin.

  [4] An annular member (7) that holds the lid member (6) covering the rotation restricting piece (3) and the coil spring (4) at the tip (21A) of the pivot (21) or The bag lock according to any one of [1] to [3], further including a step portion (211) that comes into contact with the lid member (6).

  According to the bag lock of the present invention, even if the rotation limiting piece fixed to the pivot of the latching member rotates in conjunction with the operation of the latching member, the coil spring acts on the latching member. The coil spring can be prevented from being worn even when used for a long period of time.

1 is a plan view showing a state where an embodiment of the present invention is attached and attached to the bottom of a school bag. It is a disassembled perspective view of the bag lock in one embodiment of this invention. In one Embodiment of this invention, it is a rear view of the lock | rock of the lock state which permeate | transmitted one part. In one Embodiment of this invention, it is a front view of the lock | rock of the lock state. It is AA sectional view taken on the line in one embodiment of this invention. In one Embodiment of this invention, it is a rear view of the bag lock | rock of the unlocked state which permeate | transmitted one part. In one embodiment of the present invention, it is a front view of the unlocked bag lock. It is a perspective view which shows the state with which the rotation limitation piece 3, the coil spring 4, and the protection member 5 in one embodiment of this invention were combined. It is an enlarged view of the latching member 2 and the annular member 7 in one embodiment of the present invention.

  Hereinafter, an embodiment of the bag lock of the present invention will be described with reference to the drawings. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  As shown in FIG. 1, the bag lock of the present invention is attached to the bottom of a bag body B such as a school bag, and is locked in a state where it is engaged with a latch plate P fixed to one end of a kabuse C of the school bag. In this state, the cab C cannot be opened from the bag main body B. On the other hand, when the engagement with the latch plate P is released, the cab C can be opened from the bag main body B. Specifically, after the latching member 2 pivoting with respect to the lock body 1 is inserted into the fitting hole P1 formed in the latch plate P, the center portion 1a of the lock body 1 is directed outward. The engaging protrusion 13 provided so as to protrude and having an outer shape substantially the same shape as the fitting hole P1 is fitted into the fitting hole P1, and the latching member 2 is rotated 90 degrees as shown in FIG. Then, the latching member 2 comes into contact with the latching plate P and is locked. On the other hand, when the latching member 2 is rotated 90 degrees from the state of FIG. 1, the latching member 2 does not come into contact with the latching plate P and is unlocked, and the latching member 2 is fitted into the latching plate P. By inserting the joint hole P1, the cover C can be opened from the bag body B and the contents can be taken in and out.

  As shown in FIG. 2, the bag lock of the present invention includes a lock body 1, a latch member 2, a rotation limiting piece 3, a coil spring 4, a protective member 5, a lid member 6, an annular member 7, a locking member 8, It is comprised from the elastic member 9, the magnetic body M, etc., and these members are combined suitably.

  The lock body 1 contains a latch member 2, a rotation limiting piece 3, a coil spring 4, a protective member 5, a lid member 6, an annular member 7, a locking member 8, an elastic member 9, a magnetic body M, etc. It is a member that is fixed to the bottom of the bag body B and has an elongated shape. As shown in FIGS. 2, 4, 7, and the like, the central portion 1 a has a first insertion hole 11 through which the pivot 21 of the latch member 2 is inserted, and a second insertion hole through which one end of the locking member 8 is inserted. 12 is drilled. The locking projection 13 is provided on the central portion 1a of the lock body 1 so as to protrude outward, that is, toward the locking plate P, and has substantially the same shape as the fitting hole P1 of the locking plate P. Thus, the latch plate P is loosely fitted to the fitting hole P1 to prevent the latch plate P from moving greatly between the lock body 1. A first insertion hole 11 is formed near the center of the locking projection 13.

  The sleeve portions 1b located on both sides of the central portion 1a of the lock body 1 are provided so as to be inclined at an angle of about 3 to 10 degrees with respect to the central portion 1a, respectively. It is integrally formed with 1a. When the sleeve 1b is provided at a predetermined angle with respect to the central portion 1a, the attachment member that fastens one end of the shoulder belt and is attached to each sleeve 1b and the hooking member 2 are arranged in a straight line. Therefore, when the bag body B is erected with the bottom of the bag body B down, there is an effect that the bag body B hardly stands down and can stand stably.

  The latching member 2 is a member that can be inserted into a fitting hole P1 drilled in a latching plate P attached to the cover C and pivotally supported by the lock body 1. It is a member to be gripped when the user operates in the unlocked state when the bag lock of the present invention is in the locked state. In this embodiment, the latching member 2 has a substantially T-shape, and is pivotally supported with respect to the lock body 1 by inserting the portion of the pivot 21 into the first insertion hole 11. .

  As shown in FIG. 2 and FIG. 7, the pivot 21 of the latching member 2 generally has a substantially cylindrical shape, but the outer periphery has a quadrangular shape in the vicinity of the center thereof. Abutting on the standing piece 32 of the restricting piece 3, the force applied to the retaining member 2 can be reliably transmitted to the rotation restricting piece 3. In addition, the tip portion 21A has a shape in which two types of substantially circular cylinders having different diameters are concentrically stacked so that the diameter increases toward the head 22 side, and the diameter is at the boundary between them. A ring-shaped stepped portion 211 is formed as an end surface of the larger substantially circular cylinder. Since the annular member 7 contacts the stepped portion 211, the lid member 6 held by the annular member 7 maintains the predetermined height of the pivot 21 and is not pushed into the head 2 side. Since the spring 4 is not pushed by the cover member 6 and no load is applied, the life of the coil spring 4 can be extended and the bag lock of the present invention can be used for a long time. In another embodiment, by reducing the diameter of the lid member insertion hole 61 in the lid member 61, the periphery of the lid member insertion hole 61 can be brought into contact with the stepped portion 211, and the same effect can be achieved. .

  The head 22 of the latching member 2 has a substantially rectangular parallelepiped shape, and a pivot 21 is provided in the vicinity of the center thereof. The outer shape of the head 22 is substantially the same shape as the fitting hole P1 drilled in the retaining plate P, and has a diameter smaller than the inner diameter of the fitting hole P1, so that the head 22 is fitted. It can be inserted into the joint hole P1. Further, the outer shape of the head 22 has substantially the same shape as the locking protrusion 13.

  The rotation limiting piece 3 is a member that is fitted on the pivot 21 of the latching member 2 and limits the pivoting angle of the latching member 2. The rotation restricting piece 3 has a substantially disk shape, protrudes from a part of the outer periphery, and passes through the engaging shaft 31 having a notch that can be locked with one end of the coil spring 4 and the pivot 21. A standing piece 32 erected on the periphery of the through-hole 35 to come into contact with the quadrangular outer periphery of the pivot 21 and a part of the outer periphery curved in a concave shape and can be engaged with the flange 81 of the engaging member 8. A locking recess 33, a restricting piece 34 that abuts against the restricting portion 14 provided in the central portion 1a of the lock body 1 to restrict the rotation angle of the rotation restricting piece 3 to about 90 degrees, and the like are provided.

  The standing piece 32 is erected as two plate-like members so as to face each other with the through hole 35 interposed therebetween, abuts so as to sandwich the outer periphery of the quadrangular portion of the pivot 21, and is fixed to the pivot 21. The latch member 2 and the rotation restricting piece 3 are reliably interlocked.

  One end of the coil spring 4 is engageable with the engaging portion 31 of the rotation restricting piece 3, and a helical coil portion 41 that is continuous from the one end portion 42 and through which the pivot 21 is inserted. The thin wire-like other end portion 43 is provided continuously from the coil portion 41 and fitted in the central portion 1a of the lock body 1. In the coil spring 4, in the locked state in FIGS. 3 to 5, no force is applied to the one end portion 42 and the other end portion 43 and no urging force is generated, but when the latching member 2 is rotated, The engaging part 31 of the rotation restricting piece 3 interlocked with the latching member 2 is engaged with the one end part 42, and the latching member 2 is rotated by an angle of about 90 degrees, and the unlocked state shown in FIGS. Then, the urging force that urges the rotation restricting piece 3 locking recess 33 and the hook 81 of the locking member 8 and urges the one end 42 clockwise is accumulated. When the locking between the locking recess 33 of the rotation limiting piece 3 and the flange 81 of the locking member 8 is released, the one end portion 42 causes the engaging portion 31 of the rotation limiting piece 3 to move by this accumulated biasing force. It will push, and the latching member 2 interlock | cooperated with the rotation limitation piece 3 and the rotation limitation piece 3 will rotate, and it will be in the locked state in FIGS. Since the coil portion 41 of the coil spring 4 is located outside the protection member 5, if it is displaced and contacted, it becomes the outer periphery of the protection member 5 instead of the standing piece 32 of the rotation limiting piece 3.

  The protection member 5 is a member that is positioned inside the coil portion 41 of the coil spring 4, is fitted to the pivot 21, and covers the standing piece 32 that stands on the rotation limiting piece 3. The protection member 5 has a substantially square cylindrical shape, and has a protection member insertion hole 51 through which the pivot 21 is fitted, and a recess 52 that covers the standing piece 32 on the opposite side surface. Yes. The protective member 5 prevents the inner side of the coil portion 41 of the coil spring 4 from coming into direct contact with the standing piece 32 erected on the rotation restricting piece 3, in particular, the side surface on which the standing piece 32 is raised. However, since the coil spring 4 can be prevented from being worn, the life of the bag lock can be extended. Further, when the rotation restricting piece 3 or the coil spring 4 is covered with the lid member 6 or the like, the protective member 5 interferes between the material such as the lid member 6 and the rotation restricting piece 3, resulting in a physical grip. The coil spring 4 can be prevented from being pressed by a material such as the lid member 6 in the vertical direction, which is the insertion direction of the pivot 21, and the smooth operation of the coil spring 4 can be ensured. In the present embodiment, the protection member 5 has a substantially rectangular tube shape in which the inner shape is a quadrangle and the outer shape bulges outward slightly. However, in other embodiments, the outer shape has a different polygonal shape. It can be a shape having a curved surface such as a circle.

  The protective member 5 is preferably made of a material softer than the coil spring 4. If the protective member 5 has no angular portion, the inner side of the coil portion 41 of the coil spring 4 will not be scraped or worn, but if the protective member 5 is made of a softer material than the coil spring 4, it is in contact with the coil portion 41. However, since the protective member 5 is worn out, the life of the bag lock can be extended. Specifically, when the material of the coil spring 4 is a metal such as hard steel wire or stainless steel wire, the material of the protective member 5 is polyacetal, nylon 6,6, nylon 6 because of characteristics such as hardness and durability. Polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, acrylic resin, ABS resin, polyethylene terephthalate, silicone resin and the like are preferable.

  The lid member 6 is fixed to the lock body 1 so as to cover the pivot 21 of the latching member 2, the rotation limiting piece 3, the coil spring 4, the protection member 5, the magnetic body M, etc. accommodated in the central portion 1 a of the lock body 1. It is a member. The lid member 6 has a lid member first insertion hole 61 through which the distal end portion 21A of the pivot 21 of the latch member 2 is inserted, and a lid member first insertion hole 62 through which one end of the locking member 8 is inserted. The lid member 6 is fixed to the lock body 1 by caulking the distal end portion 21A after the distal end portion 21A is inserted into the lid member insertion hole 61 and the annular member 7. In addition, projecting portions 63 projecting outward from one side surface of the lid member 6 are provided, and these projecting portions 63 hold the magnetic body M with the lock body 1.

  The annular member 7 is a ring-shaped member, and is inserted into the distal end portion 21A of the pivot 21 of the latching member 2 until it contacts the stepped portion 211, and the distal end portion 21A is caulked, whereby the lock body 1 and the lid The member 6 can be fixed.

  The locking member 8 can come into contact with the rotation limiting piece 3 and restricts the rotation limiting piece 3 from rotating by contacting the rotation limiting piece 3 when the urging force is accumulated in the coil spring 4. It is a member. The locking member 8 includes a rod-shaped first shaft portion 81 that is inserted into the second insertion hole 12 of the lock body 1, a second shaft portion 82 that is inserted through the elastic member 9, a first shaft portion 81, and a second shaft portion. A disc-shaped flange 83 is provided between the first and second plates 82. The collar portion 83 is locked with the locking recess 33 of the rotation limiting piece 3 in the unlocked state and restricts the rotation limiting piece 3 from rotating. Then, when the latching plate P pushes in the first shaft portion 81, the locking of the flange 83 and the locking recess 33 is released, and the rotation limiting piece 3 and the locking member 2 rotate to rotate the locking member 2. The locking plate P cannot be removed from the locked state. The elastic member 9 is a helical spring member. One end of the elastic member 9 is in contact with the lid member 6 and the other end is in contact with the locking member 8, and an urging force is applied so as to press the locking member 8 against the lock body 1. is working.

  The magnetic body M is a member exhibiting paramagnetism, is accommodated in the central portion 1 a of the lock body 1, and is pressed and held by the overhang portion 63 of the lid member 6. The latch member 2 is attracted to the lock body 1 by the magnetic force of the magnetic body M, the latch member 2 abuts against the central portion 1a of the lock body 1, and is opened from the bag body C from the bag body C even in the unlocked state. Can not be. Specifically, the magnetic material M is preferably a permanent magnet such as a ferrite magnet, an alnico magnet, or a neodymium magnet.

  Next, the operation of the bag lock of the present invention will be described.

  As shown in FIG. 1, the head portion 22 of the latch member 2 intersects with the fitting hole P <b> 1 of the latch plate P, and the bag body C is in a locked state where the cover C is not opened. In this state, as shown in FIGS. 3 to 5, no biasing force is accumulated in the coil spring 4, and the hook 83 of the locking member 8 and the locking recess 33 of the rotation limiting piece 3 are locked. It is not in a state.

  When the head portion 22 of the latching member 2 is rotated clockwise from this locked state, the engaging portion 31 of the rotation limiting piece 3 fixed to the latching member 2 is connected to the one end portion 41 of the coil spring 4. The one end portion 41 is moved against the biasing force of the coil spring 4 while being engaged, and the head portion 22 of the latching member 2 is about 90 degrees at which the restricting piece 34 of the rotation restricting piece 3 contacts the restricting portion 14. 6 and 7, when the collar 83 of the locking member 8 and the locking recess 33 of the rotation limiting piece 3 are locked, the rotation limiting piece 3 is The coil spring 4 stops rotating in a state where the urging force of the coil spring 4 is accumulated. At this time, the head 22 of the latch member 2 is in an unlocked state in which the latch plate P can be removed from the fitting hole P1 of the latch plate P.

  Then, from the unlocked state, by pushing the latch plate P and pushing the first shaft portion 81 of the locking member 8 to the lock body 1 side, the collar portion 83 of the locking member 8 moves to the lid member 6 side. The locking of the rotation limiting piece 3 with the locking recess 33 is released, and the rotation limiting piece 3 and the latching member 2 are rotated counterclockwise by an angle of about 90 degrees by the biasing force accumulated in the coil spring 4. Thus, as shown in FIG. 1, the head portion 22 of the latching member 2 again crosses the fitting hole P1 of the latching plate P to be locked, and as shown in FIGS. No urging force is accumulated, and the collar 83 of the locking member 8 and the locking recess 33 of the rotation limiting piece 3 return to the state where they are not locked.

DESCRIPTION OF SYMBOLS 1 ... Lock body 1a ... Center part 1b ... Sleeve part 11 ... 1st penetration hole 12 ... 2nd penetration hole 13 ... Locking protrusion 14 ... Restriction part 2. ..Hanging member 21... Axis 21A... Tip portion 211... Step portion 22... Head 3. ... Recessed recess 34 ... Regulating piece 35 ... Through hole 4 ... Coil spring 41 ... Coil part 42 ... One end part 43 ... Other end part 5 ... Protective member 51 ... Protection member insertion hole 52 ... Depression 6 ... Lid member 61 ... Lid member first insertion hole 62 ... Lid member second insertion hole 63 ... Overhang 7 Annular member 8 ... locking member 81 ... first shaft part 82 ... second shaft part 83 ... collar 9 ... elastic member B ... bag body C ... kabuse P ... Hanging plate P1 ... Fitting hole M Magnetic body

Claims (4)

A lock (1) fixed to the bag body (B);
A latch member (2) pivotally supported by the lock body (1) through a fitting hole (P1) drilled in a latch plate (P) attached to the cabse (C); ,
A rotation limiting piece (3) which is inserted into the pivot (21) of the hooking member (2) and restricts the rotation angle of the hooking member (2);
A coil spring (4) having at least one end engageable with the engaging portion (31) of the rotation limiting piece (3) and a helical coil portion (41) inserted through the pivot (21);
Positioned on the inner side of the coil portion (41) of the coil spring (4), fitted to the pivot (21), and covers the standing piece (32) standing on the rotation limiting piece (3). A bag lock comprising a protective member (5).   The bag lock according to claim 1, wherein the protective member (5) is made of a material softer than the coil spring (4).   The bag according to claim 1 or 2, wherein the protective member (5) is made of a synthetic resin.   At the tip (21A) of the pivot (21), the annular member (7) or the lid member (6) that holds the lid member (6) covering the rotation limiting piece (3) and the coil spring (4). The bag lock according to any one of claims 1 to 3, further comprising a stepped portion (211) that abuts the contact portion.

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