JP5187723B2 - Small case lock - Google Patents

Description

  The present invention relates to a small case lock, and more particularly, to a small case lock that can be smoothly released.

  A conventional lock for a small case has a structure shown in FIG. A hook portion is attached to the lid side of the small case. A lock mechanism is attached to the main body side of the small case. At the base, the slider is movably held and fixed to the main body side of the small case. The spring is provided on an extension line where the slider and the hook engage. When the lid of the small case is closed, the hook enters the main body, and the claw portion of the slider of the lock mechanism engages with the hook. Since the spring always pushes the slider in the locking direction, the hook enters while pushing the slider. When the tip of the hook enters under the claw portion, the slider is returned by the force of the spring, and the claw portion and the hook are engaged and locked. When unlocking, move the slider to the opposite side of the locking direction with the knob and release the claw from the hook to release the lock. Examples of related art related to this will be given below.

  The “locks such as a bag” disclosed in Patent Document 1 is a lock with good durability that can be reliably unlocked. As shown in FIG. 4B, the engagement fitting has a hook-shaped portion. The engaged tool includes a slider having an engaging claw. The slider is urged by the main spring, and the engaging claw blocks half of the insertion slot. The engagement metal push-back piece is urged by the secondary spring and closes the remaining half of the insertion opening. At the time of unlocking, the engagement fitting is reliably pushed out by the engagement fitting push-back piece.

The “lock” disclosed in Patent Document 2 is a lock that can be opened without pressing a knob. As shown in FIG. 4C, a recess is formed in the lower end edge of the locking plate. A stable piece is pivotally attached to the main plate and a spring is applied. When locked, the notch provided in the locking plate fits into the main plate latch. At the time of unlocking, when the locking plate and the main plate are dissociated, the stable lug fits into the recess and stops the locking plate. The main plate does not return even when the knob is released. When the locking plate is released, the stability piece is removed and the locking plate returns.
Japanese Utility Model Publication No. 62-011973 Japanese Utility Model Publication No. 05-012566

  However, the conventional small case lock has the following problems. Since the direction of the force of the spring and the direction of the force of the knob part are greatly deviated, the rotational moment is increased. Therefore, the knob portion is pressed against the base portion by the rotational moment. Therefore, the release operation cannot be smoothly performed due to a large frictional force between the knob portion and the base portion. In order to avoid this, if the direction of the force of the spring and the direction of the force of the knob portion are made to coincide, the configuration becomes complicated and the number of parts increases, which increases costs.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described conventional problems so that a release operation of a lock for a small case can be smoothly performed with a simple configuration.

  In order to solve the above-described problems, in the present invention, a hook portion attached to a lid side of a small case and a lock mechanism portion of a lock for a small case comprising a lock mechanism portion attached to the main body side of the small case, The slider includes a slider that engages, a spring that pushes the slider in the locking direction, a knob that moves the slider, and a base that is movably held and attached to the main body of the small case. It was set as the structure provided in the notch surface of the base part between.

  In addition, the knob portion and the slider were provided with ribs that contact the flat portion of the base portion. Furthermore, a stopper is provided on the base part, and a slope part that contacts the stopper is provided on the slider. When the slope part is pressed against the stopper by the force of the spring, the slider is pressed against the inner surface of the base part on the hook part side so that the gap is reduced. I made it.

  By configuring as described above, the action line of the spring force and the force action line of the knob part are close, and the burr of the base part is avoided by the rib, so that the release operation of the lock for the small case can be performed smoothly. Become. Further, due to the action of the stopper and the slope portion, the gap between the slider and the base portion is reduced, and there is no backlash between the main body and the lid of the small case in the locked state.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS.

  In an embodiment of the present invention, a spring for pressing the slider is provided in the notch surface of the base portion between the knob portion and the slider, a rib for avoiding burr of the base portion is provided in the knob portion and the slider, and a stopper for the base portion is provided. It is a lock for a small case provided with a slope portion on the slider.

  FIG. 1 is a conceptual diagram of a lock for a small case in an embodiment of the present invention. Fig.1 (a) is a conceptual diagram which shows the state which attached the lock to the small case. FIG. 1B is a perspective view of the lock for the small case. FIG.1 (c) is detail drawing of the lock for small cases. In FIG. 1, the hook part 1 is a hook fixed to the lid side of the case. The base part 2 is a substrate fixed to the main body side of the case. The slider 3 is a movable member having a claw portion that engages with the hook portion, and is movably held by the base portion. The knob part 4 is a member for releasing the engagement between the hook part and the claw part by moving the slider with a finger. The spring 5 is a coil spring for biasing the slider in the locking direction. The stopper 7 is a protrusion for pressing the slider against the base portion. The hook 8 is a portion that engages with the claw portion of the slider.

  FIG. 2 is a diagram of the parts before the small case lock. FIG. 2A is a conceptual diagram of the hook portion. FIG. 2B is a conceptual diagram of the knob portion. FIG. 2C is a conceptual diagram of the spring. FIG. 2D is a conceptual diagram of the base portion. FIG. 3 is a detailed view of the slider for the small case lock. FIG. 3A is a perspective view of the slider. FIG. 3B is a top view of the slider. FIG. 3C is a bottom view of the slider. FIG. 3D is a front view of the slider. FIG. 3E is a rear view of the slider. FIG. 3F is a left side view of the slider. FIG. 3G is a right side view of the slider. FIG. 3H is a cross-sectional view in a direction perpendicular to the movement of the slider. FIG. 3I is a cross-sectional view in a direction parallel to the movement of the slider. 2 and 3, the rib 6 is a protrusion provided on the knob portion or the slider in order to avoid contact with the burr of the base portion. The attachment part 9 is a part for attaching the hook part to the edge of the lid of the case.

  The function and operation of the small case lock in the embodiment of the present invention configured as described above will be described. First, an overview of the function of the small case lock will be described with reference to FIG. The lock for the small case includes a hook portion 1 attached to the lid side of the small case and a lock mechanism portion attached to the main body side of the small case. The locking mechanism includes a slider 3 that engages with the hook 1, a spring 5 that pushes the slider 3 in the locking direction, a knob 4 that moves the slider 3, and a small case body that movably holds the slider 3. There is a base part 2 attached to the side.

  Since the slider 3 is pushed in the locking direction by the spring 5 provided in the notch surface of the base portion 2 between the knob portion 4 and the slider 3, the slider 3 is engaged with the hook portion 1. The slider 3 can be unlocked by moving the slider 3 with the knob 4. Since the spring 5 is in a position close to the knob portion 4, the knob portion 4 hardly tilts when unlocked, and the movement is not hindered by friction with the base portion 2. Since the knob portion 4 and the slider 3 are provided with ribs 6 that come into contact with the flat portion of the base portion 2, they move smoothly without being obstructed by burrs in the base portion. When the slope portion of the slider 3 is pressed against the stopper 7 of the base portion 2 by the force of the spring 5, the slider 3 is pressed against the inner surface of the base portion 2 on the hook portion 1 side.

  Next, the configuration of each component will be described with reference to FIG. As shown in FIG. 2A, the hook portion 1 has a hook 8 and an attachment portion 9 integrated. Separate parts may be joined by caulking or the like. As shown in FIG. 2B, the knob portion 4 is inserted into the slider 3 to be integrated. As shown in FIG. 2C, the spring 5 is a simple coil spring. As shown in FIG. 2D, the stopper 7 of the base portion 2 is caused from the notch. A hole in which the spring 5 and the slider 3 are fitted is formed.

  Next, the configuration and function of the slider will be described with reference to FIG. FIG. 3A is a perspective view of the slider. FIG. 3B is a top view seen from the b direction. FIG. 3C is a bottom view seen from the c direction. FIG. 3D is a side view seen from the d direction. FIG. 3E is a side view seen from the e direction. FIG. 3F is a side view seen from the f direction. FIG. 3G is a side view seen from the g direction. FIG. 3H is a cross-sectional view seen from the h direction. FIG. 3I is a cross-sectional view seen from the i direction.

  The spring 5 is provided in a notch surface of the mounting surface of the base portion 2. The spring 5 is located between the slider 3 and the knob portion 4. Since the spring 5 is provided at the position where the hook 8 and the claw part engage with each other and the attachment surface in the middle of the knob part 4, the action line of the force of the spring 5 and the action line of the force of the knob part 4 are close to each other. Accordingly, the rotational moment acting on the knob portion 4 is small, and the force with which the knob portion 4 pushes the base portion 2 is small. Therefore, the friction between the knob part 4 and the base part 2 is reduced. Further, since the rib 6 is provided on the slider 3 and the knob portion 4 so as to avoid the burr of the base portion 2, the movement is not hindered by being caught by the burr of the base portion 2.

  The base portion 2 is provided with a stopper 7, and the slider 3 is provided with a slope portion that comes into contact with the stopper 7. When the inclined surface portion is pressed against the stopper 7 by the force of the spring 5, the slider 3 is pressed against the inner surface of the base portion 2 on the hook portion 1 side. At the time of locking, the tip of the claw part of the slider 3 serves as a power point, and the ceiling of the base part 2 (the inner surface on the hook part 1 side) serves as a fulcrum to act to rotate the slider 3. Since the slope is pressed by the stopper 7, rotation can be suppressed.

  An angle of 2 ° toward the inside is attached to the hanging portion of the claw portion of the slider 3. When trying to move to the side where the hook 8 comes off, the hook 8 hits the surface of the claw portion and becomes a resistance, so that the hook 8 can be prevented from coming off at the time of impact.

  As described above, in the embodiment of the present invention, the small case lock is provided with a spring for pressing the slider in the notch surface of the base portion between the knob portion and the slider, and the rib for avoiding the burr of the base portion is provided. Since the slider is provided with the slope portion that is provided on the knob portion and the slider and abuts against the stopper of the base portion, the releasing operation can be performed smoothly and the backlash of the lid is eliminated.

  The lock for a small case of the present invention is optimal as a lock for a small case such as a musical instrument case.

It is a conceptual diagram before the lock for small cases in the Example of this invention. It is a conceptual diagram of the components before the lock for small cases in the Example of this invention. It is a conceptual diagram of the slider before the lock for small cases in the Example of this invention. It is a conceptual diagram of the conventional lock for small cases.

Explanation of symbols

1 hook part 2 base part 3 slider 4 knob part 5 spring 6 rib 7 stopper 8 hook 9 attachment part

Claims (3)

In a lock for a small case comprising a hook portion attached to the lid side of the small case and a lock mechanism portion attached to the main body side of the small case, the lock mechanism portion includes a slider that engages with the hook portion, and locks the slider. A spring that pushes in the direction, a knob part that moves the slider, and a base part that movably holds the slider and is attached to the main body side of the small case, the spring between the knob part and the slider Provided in the notch surface of the base part, the knob part is provided in contact with the base part so as to cover the outer part of the spring, and the slider wraps the inner part of the spring. said base portion is provided in contact useless, the knob portion and the line of action of the force which the spring pushes the slider press the slider As the line of action of the force is close, lock for small casing, characterized in that said said spring and said knob slider is provided. The lock for a small case according to claim 1, wherein the knob portion and the slider are provided with ribs that contact a flat portion of the base portion. The base is provided with a stopper, and the slider is provided with a sloped portion that contacts the stopper. When the slope is pressed against the stopper by the force of the spring, the slider is pressed against the inner surface of the base on the hook side. The lock for a small case according to claim 1, wherein the gap is reduced.

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