JPH0627730Y2 - Magnetic Totchi - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention is a magnetic catch used for holding the closed state of a door of furniture, etc., and is attached to the furniture (cabinet) case side. The present invention relates to a magnet catch that can adjust a protruding state of a magnetic force surface of a magnet and ensures an accurate attracting state with a metal plate (adsorbed plate) attached to a door side.

(B) Conventional technology In general, magnetic catches are used to secure the closure of furniture doors such as record racks and cabinets. This magnet catch is usually attached to the open end of a furniture case and attracts a attracted plate (metal piece) attached to the door side to secure the closed state of the door.

Using this magnet catch, in order to ensure an accurate closed state of the door, the mounting position of the magnet catch,
In particular, it is necessary to properly adapt the protruding state of the suction surface to the suction plate on the door side. However, it is not possible to perform this installation work accurately, and even if the magnet catch could be installed in the correct position at the beginning, it could become loose due to the door loosening over the years, etc. There was a disadvantage that the proper relationship with the magnetic catch (adsorption surface) became incorrect and the proper closed state could not be maintained.

Therefore, in recent years, a magnet catch is composed of a flat plate-shaped mounting plate and a catcher having a magnet attracting surface protruding from one end of the case, and a check tooth portion is formed in the surface of the mounting plate, while There has been proposed a structure in which a non-return pawl portion that engages with the non-return tooth portion is provided on the bottom surface, and the catcher is movable with respect to the mounting plate in the protruding direction of the suction surface (not shown).

According to this magnet catch, the mounting plate is fixed to the opening end of the furniture case, the catcher is slid on the mounting plate, and the check tooth portion and the check claw portion are engaged with each other. If the contact surface between the magnetic surface of the catcher (protruding attracting surface) and the attracted plate is not appropriate, for example, the protrusion length of the attracting surface is insufficient and sufficient bonding cannot be obtained with the attracting surface. In that case, push the catcher against the mounting plate in the direction of the suction surface protrusion. As a result, the check claw moves on the check tooth, that is, the catcher moves in the protruding direction of the suction surface, and the suction surface can properly suck the attracted plate of the door, and the door can be closed accurately. Secure a successful condition.

(C) Problems to be solved by the invention In the structure of the magnetic catch described above, the cross-sectional shape of each tooth and each claw of the check tooth portion and the corresponding check claw portion with respect to the moving direction of the catcher By forming it in an inclined shape and allowing only movement in the direction of the tip of the magnet part (projection direction of the attracting surface), it is prevented from moving backward in the direction of the rear end of the magnet part, and the magnet attracting surface is collided by the collision of the door (attracted plate) Is set not to move backward.

By the way, in the case of this magnetic catch, when the catcher is moved with respect to the mounting plate, since the check claw portion and the check tooth portion move in the engaged state, a certain strong pushing force is applied. It is necessary to call. Therefore, it is difficult to move the check claw portion forward every pitch, and the catcher moves too far beyond the desired (appropriate) position during the moving operation, and it is difficult to make fine adjustments. If the catcher goes beyond the proper position and moves too far, the catcher cannot be retracted by the check mechanism (check teeth and check claw). Therefore, when readjusting, it is necessary to advance the catcher until it comes off the mounting plate, slide it on the mounting plate again, and then carefully perform the mounting and moving operation again, which is a disadvantage that the adjusting operation is extremely troublesome. was there.

This invention provides a magnetic catch that allows the catcher to freely move back and forth by engaging and disengaging the meshing engagement between the check teeth and the check claws, and adjusting the protruding state of the appropriate suction surface. The purpose is to do.

(D) Means and Actions for Solving Problems In order to achieve this object, the magnet catch of the present invention has the following structure.

The magnet catch has a flat plate-shaped mounting plate with a check tooth at the center of the surface and a magnet inside the case. The tip of this magnet is projected outside the case, A magnetic catch that is provided with a check claw portion that meshes with the check tooth portion of the mounting plate, wherein the catcher is a magnet catch that is movable in the magnet portion protruding direction with respect to the mounting plate. A retracting operation means for engaging and disengaging the meshing engagement state of the check tooth portion and the check claw portion is provided, and the catcher can be retracted toward the rear end of the magnet portion with respect to the mounting plate.

In the magnet catch having such a configuration, the catcher is provided with the retracting operation means for engaging and disengaging the engagement state between the check tooth portion and the check claw portion. The retracting operation means is, for example, a catcher case body in which an operation shaft penetrating the case body (including an internal magnet portion) in a perpendicular direction is tightly arranged, and an upper end of the operation shaft is projected to an upper surface of the case body, In addition, in the normal state, the protruding lower end is set so as not to contact the check tooth portion. In this state, the non-return tooth portion and the non-return claw portion are in meshing engagement with each other, and the catcher can move toward the tip of the magnet portion. If the catcher moves too far beyond the proper position, push the operating shaft downward (in the direction of the check teeth of the mounting plate). At this time, the lower end of the operating shaft portion pushes the mounting plate downward, and the mounting plate (return tooth portion) is slightly retracted downward. As a result, the engagement between the check tooth portion and the check claw portion is released. If the catcher is pushed toward the rear end of the magnet in this state, the catcher will retreat extremely smoothly. Then, when the operating shaft is returned to the original position at the proper position, the check teeth and the check claws are engaged again. Therefore, the catcher can be moved forward and backward with a simple operation, and fine adjustment can be achieved.

(E) Embodiment FIG. 1 is a perspective view showing a specific embodiment of the magnet catch according to the present invention.

The magnet catch is composed of a flat plate-shaped mounting plate 1 formed of a synthetic resin material (resin material such as ABS or PP) and a hollow case-shaped catcher 2 having a magnet portion 22 housed therein.

The mounting plate 1 is a rectangular flat plate, and is set so that mounting holes 12 are opened in the bulged portions 11 at both ends and are screwed to a door (not shown). A guide groove portion 13 is formed in the lower portion of the bulging portion 11 in the width direction of the mounting plate 1 so that a guide piece of a catcher 2 to be described later can be slid. Further, in the center surface of the mounting plate 1, a plate spring portion 15 formed by providing the mounting plate 1 with a planar U-shaped cut groove 14 is formed. A tooth stop portion 16 is provided. That is, the central portion of the leaf spring portion 15 is formed by cutting out the check tooth portion 16 to form a thin portion 17 so that the backward operating means (round bar shaft lower end) 3 can slide. The cross-sectional shape of each tooth of the non-return tooth portion 16 is the direction of the groove 14 of the leaf spring portion 15 (the leaf spring portion 15 and the mounting plate 1).
Is formed so as to be inclined toward the direction opposite to the continuous portion), and the opposite direction is formed to be vertical, and the non-return tooth portion 16 is formed by connecting a large number of teeth having this cross-sectional shape. That is, the movement of the catcher 2 to be described later is set to be allowed only in the direction of the inclined surface of the check tooth portion 16 (the sticking surface projecting direction to be described later).

The catcher 2 is a hollow case body 21 having one end opened, and a magnet portion 22 is housed inside the case body 21. The magnet unit 22 is configured by attaching attraction plates (metal plates) 22b to the upper and lower surfaces of the magnet plate 22a.
The tip (adsorption surface) of b is projected outward from the opening end of the case body 21. Locking pieces 23 are provided on both sides of the bottom surface of the case body 21, and the locking pieces 23 are slidably fitted in the slide grooves 13 of the mounting plate 1.

Further, on the bottom surface of the case body 21, there is formed a non-return claw portion 24 corresponding to the non-return tooth portion 16 of the mounting plate 1 and meshingly engaged,
That is, the check claw portion 24 is formed so that the attracting surface of the magnet portion 22 protrudes in an inclined shape, and the check claw portion 24 and the check tooth portion 1 are normally formed.
6 is engaged, and the catcher 2 can be moved in the protruding direction of the suction surface.

A feature of the present invention is that the catcher 2 is provided with a retracting operation means 3 for retracting the catcher 2 in the rear end direction of the magnet portion 22 (in the direction opposite to the protruding direction of the attraction surface of the magnet portion).

As shown in the sectional view of FIG. 2, the retracting operation means 3 is a round bar shaft 31 formed of a hard synthetic resin material or the like, and this round bar shaft 31 is located at the central portion of the case body 21 (on the bottom surface of the case). It is fitted in a through hole 25 provided at a position corresponding to the check claw portion 24).
The shaft length of the round bar shaft 31 is set longer than the thickness of the case body 21, and the shaft diameter is set to be substantially equal to the hole diameter of the through hole 25. Is attached to. At the upper end of the round bar shaft 31, a large-diameter operation portion 32 is provided.
Is provided, and the operation portion 32 projects above the upper surface of the case body 21. Further, a large-diameter locking portion 33 is provided at the lower end of the round bar shaft 32, that is, the lower end part that projects through the bottom surface of the case body 2 to prevent the round bar shaft 31 from coming off.
That is, the lower end locking portion 33 of the round rod shaft 31 is normally located at a position corresponding to the thin portion 17 in the center of the leaf spring portion 15 of the mounting plate 1 with a slight gap.

In FIG. 3, the catcher 2 is operated by operating the retracting operation means 3.
It is sectional drawing which shows the state which retreats.

In a normal state, as shown in FIG. 2, the non-return tooth portion 16 and the non-return pawl portion 24 are engaged with each other, and by pushing the catcher 2, the non-return pawl portion 24 is placed on the non-return tooth portion 16. To move the catcher 2 to the mounting plate 1 in the direction of the attracting surface (the magnet portion 22).
Can be moved in the protruding direction). Now, let's say catcher 2
Is excessively moved beyond the proper position, the round bar shaft (operation portion 32) 31 is pressed downward (toward the leaf spring portion 15). At this time, the lower end (33) of the round bar shaft 31 is attached to the leaf spring portion 15.
Is pressed downward to tilt the mounting plate 1 downward. As a result, the engagement between the check tooth portion 16 and the check claw portion 24 is released (see FIG. 3). In this normal state, catcher 2
Is pushed in the rear end direction of the magnet portion 22 (the direction opposite to the protruding direction of the attraction surface of the magnet portion 22), the catcher 2 retreats extremely smoothly. Then, by returning the round bar shaft 31 to the original position at an appropriate position, the leaf spring portion 15 returns to the original state, and the check tooth portion 16 and the check claw portion 24 mesh again with each other. Thus, the catcher 2 can be moved back and forth by a simple operation, and the delicate adjustment work can be performed accurately and easily.

(F) Effect of the Invention In this invention, as described above, a flat surface portion without teeth is provided at the center of the check tooth portion of the leaf spring portion, and the flat surface portion corresponding to the flat surface portion is formed vertically to the catcher case body. The through hole of
Since it was decided to deploy the reversing operation round bar shaft that can move up and down in this through hole, the bottom surface of the catcher case body moves forward in a substantially contact state with the flat plate portion of the mounting plate including the leaf spring portion,
Stable forward movement can be achieved without "rattle" in the up-down direction and in the left-right direction, and without a "twist" in the so-called "seesaw" shape.

Further, when retreating, the operation round bar shaft is pushed down, whereby the leaf spring portion tilts downward, the engagement between the check tooth portion and the check claw portion is released, and it is possible to easily retreat. Even in this retreat, the bottom surface of the case body is almost in contact with the flat plate portion of the mounting plate, and there is no "backlash" in the vertical and horizontal directions, and it is possible to retreat in a stably supported state.

Further, since the catcher does not move backward unless the operation rod shaft is pushed down, even if an inadvertent force such as the tilting of the door acts on the catcher from the adjustment position, the catcher will be displaced. It has an excellent effect of achieving the object of the invention, such as having no disadvantage.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment magnet catch, FIG. 2 is a sectional view of the embodiment magnet catch, and FIG. 3 is a sectional view showing a state in which a catcher is retracted. 1: Mounting plate, 2: Catcher, 3: Operating means for backward movement, 16: Check tooth part, 22: Magnet part, 24: Check claw part, 31: Round bar shaft.

Claims (1)

[Scope of utility model registration request] 1. A mounting plate having a cut line formed in the center of the flat plate portion so as to be tiltable downward, and a mounting plate having a check tooth portion on the upper surface of the plate spring portion, and a housing magnet. The front end of the case protrudes to the outside of the case body, and the bottom of the case body has a check claw that meshes with the check teeth, and the case body bottom surface is in contact with the flat plate of the mounting plate. In a magnetic catch consisting of a catcher that has been formed, a thin flat surface portion having no tooth portion is provided at the center of the check tooth portion of the flat plate spring portion, and the catcher portion corresponding to the flat surface portion is provided. A vertical through-hole is provided in the case body, and a large-diameter lower part corresponds to a flat surface part, and a large-diameter upper part projects upward from the case body. A magnetic catch that is characterized.