JPH032482A - Magnet catch for furniture - Google Patents

Abstract

PURPOSE:To smoothly open or close a door by a method in which the attracting face of a magnet and the face to be attracted of a magnetic plate which are used for holding door, etc., on a closing position, are shaped into a V-shaped or zigzag form. CONSTITUTION:A permanent magnet 4 is held by two upper and lower magnet plate yokes 5, and the magnetic attracting face 6 of the front end is shaped into a V-shaped or zigzag form to form a magnetic attractive portion 2. A screw shaft 9 and a back and forth position regulator 8 consisting of a movable part 10 to be fitted with the shaft 9 are provided in a case 7. A vertical shaft 11 formed on the tip of the movable part 10 is fitted into a long hole 12 in the back end of the yoke 5 to form a catch body 1. A magnetic plate 3 having a zigzag or V-shaped face 14 to be attracted is fixed to the door side and the body 1 is also fixed to the furniture side on the contrary. The door can thus be smoothly opened or closed with good feeling due to smaller separating forces.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic catch for furniture used to hold furniture doors in a closed position.

(Prior Art) This type of magnetic catch consists of a combination of a magnetic plate and a catch body equipped with a magnetic attraction part that attracts the magnetic plate with magnetic attraction force. The magnetic attraction surface of the catch body and the attraction surface of the magnetic plate are formed into flat surfaces perpendicular to the attraction/detachment direction between them.

(Problem to be Solved by the Invention) In the conventional magnetic catch as described above, when the catch body and the magnetic plate are separated from each other from the state where the flat magnetically attracting surface and the attracted surface are in contact with and attracting each other, Since the magnetic attraction surface and the surface to be attracted must be separated in a direction perpendicular to these surfaces, a very large separation force is required. Moreover, if the magnetic attraction surface and the surface to be attracted are separated even slightly, the magnetic attraction force acting between them will drop significantly.For this reason, for example, when opening a door that is held in the closed position by a magnetic catch as described above, When opening the door, the door must be pulled with great force,
When the catch body and the magnetic plate are separated and the door becomes free, the door opens forcefully due to the large opening force applied, and the door cannot be opened smoothly. Furthermore, when closing the door, the magnetic attraction surface of the catch body and the attraction surface of the magnetic plate come into contact with each other in an impactful manner, making it impossible to close the door smoothly.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
A magnetic catch for furniture consisting of a combination of a magnetic plate and a catch body equipped with a magnetic attraction part that attracts the magnetic plate with magnetic attraction force, wherein the attraction surface of the magnetic attraction part of the catch body is connected to the magnetic plate. A magnetic catch for furniture is formed in a V-shape or zigzag shape in a direction perpendicular to the adsorption/removal direction between the magnetic plate and the magnetic plate, and the attracting surface of the magnetic plate is also formed in a V-shape or zigzag shape in accordance with the attracting surface. This is what we propose.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 to 3, 1 is a catch body equipped with a magnetic attraction part 2, and 3 is a magnetic plate.

The magnetic attraction part 2 of the catch body l has a permanent magnet 4 sandwiched between two upper and lower magnetic plate yokes 5, and has a magnetic attraction surface at its front end, that is, a pair of upper and lower yokes that slightly protrude from the permanent magnet 4. A magnetic attraction surface 6, which is a front end surface of the yoke 5, is loosely fitted into the case 7 so as to be movable in and out of the case 7 so as to protrude from the front end of the case 7. Reference numeral 8 denotes a longitudinal position adjustment means for the magnetic attraction part 2, which includes a screw shaft 9 rotatably supported in the case 7 parallel to the direction of movement of the magnetic attraction part 2, and a screw shaft 9 that is screwed into the screw shaft 9. It consists of a movable body 10 that fits into the
A vertical shaft portion 11 provided at the tip of the movable body 10 fits into a left-right elongated hole 12 formed at the rear end portion of the upper and lower yokes 5 of the magnetic attraction portion 2 . Reference numeral 13 denotes a rotation operation section formed at one end of the screw shaft 9, and is exposed flush with the front end of the case 7.

The magnetically attracting surface 6 (the front end surface of the yoke 5) of the magnetically attracting portion 2 is formed in a zigzag shape in the left-right direction perpendicular to the adsorption/detachment direction between the magnetically attracting portion 2 and the magnetic plate 3. There is. The magnetic plate 3 is also bent in a zigzag shape in the left-right direction to provide a zigzag-shaped attracted surface 14 that can fit into and come into surface contact with the zigzag-shaped magnetic attraction surface 6.

When using it, like a conventional magnetic catch,
The case 7 of the catch main body 1 is fixed to the main body 16 side of furniture with a door, for example, using the driving pin part 15 protruding from the bottom of the case 7, and the magnetic plates 3 are formed on both ends of the case 7. Using the seat 3a, it is fixed with wood screws or the like on the inner surface of the door 17 at a position facing the magnetic attraction part 2. Of course, the case 7 of the catch body 1 may also be configured to be attached using wood screws or the like.

Once the magnetic catch is installed as described above, the door 17 is closed, and as shown in FIG. 6. At this time, if the position of the door 17 is shifted back and forth, the screw shaft 9 may be rotated to move the movable body 10 in and out back and forth to adjust the position of the magnetic attraction part 2 in the back and forth direction. Furthermore, since the magnetic adsorption part 2 can move in the left-right direction within the range of movement between the elongated hole 12 and the vertical shaft part 11, even if the magnetic plate 3 and the catch body 1 are slightly shifted in the left-right direction, the magnetic plate 3 The attraction surface 14 and the magnetic attraction part 2 on the catch body l side
When the magnetically attracting surface 6 is attracted to the magnetically attracting surface 6, the magnetically attracting portion 2 moves in the left-right direction, and the two attract each other in a state in which they are in reliable surface contact.

Close the door 17 and attach the attracted surface 14 of the magnetic plate 3 as described above.
When the magnetically attracting surface 6 of the magnetically attracting portion 2 on the side of the catch body l are attracted to each other, the abutting and attracting surface between the two has a zigzag shape. Therefore, when the door 17 is opened, the magnetic plate 3 tends to move away from the magnetic attraction part 2 in a direction perpendicular to the magnetic attraction part 2, but between the magnetic attraction surface 6 and the attraction surface 14, the angle is They will move away diagonally, not in the direction. In other words, the required separation force is smaller when the magnetically attracted surface and the surface to be attracted, which are in contact with each other and are attracted to each other, are separated in an oblique direction than when separated in a direction perpendicular to these surfaces. The magnetic attraction part 2 and the magnetic plate 3 of the catch body, in which the zigzag-shaped magnetic attraction surface 6 and the attraction surface 14 fit into each other and attract each other as described above, are as follows.
It can be pulled apart with a relatively small pulling force. In other words, the door 17 can be opened with a small opening force, and when the zigzag-shaped magnetic attraction surface 6 and the attraction surface 14, which fit into each other and are attracted to each other, are separated, the magnetic attraction portion The amount of change in the separation distance in the perpendicular direction to the surface between the magnetic attraction surface 6 and the attracted surface 14 is small compared to the amount of change in the separation distance in the perpendicular direction between the magnetic attraction surface 6 and the magnetic plate 3. In other words, even if the magnetic attraction part 2 and the magnetic plate 3 are separated from each other, the magnetic attraction force between them does not decrease drastically as in the conventional case.

Although the magnetic attraction surface 6 of the magnetic attraction portion 2 is shown as having a zigzag shape, it may also be a convex V-shaped magnetic attraction surface 6 as shown in FIG. 4, although this is not shown. Concave V
It can also be formed on the magnetically attractive surface of the shape. Furthermore, the front end surface 4a of the permanent magnet 4 sandwiched between the yokes 5 also has a magnetic attraction surface 6 (front end surface of the yoke 5) as shown in FIGS. 2 and 4.
The magnetic attraction force on the magnetic attraction surface 6 can be increased over the entire area by forming it in the same shape as the permanent magnet 4, but in some cases, as shown in FIG. 5, the front end surface 4a of the permanent magnet 4
It is also possible to make it flat to facilitate manufacturing. Of course, it is desirable that the magnetic attraction part 2 is composed of a permanent magnet 4 and a yoke 5, but even if the magnetic attraction part is made up of only permanent magnets, the front end surface of the permanent magnet may be formed in a V shape or a zigzag shape. It is also possible to achieve the desired goal.

Further, the magnetic plate 3 can also be formed by cutting a zigzag-shaped or V-shaped attracting surface 14 on the front end surface of a thick plate.

(Operations and Effects of the Invention) As described above, according to the magnetic catch for furniture of the present invention, when the magnetic plate is separated from the magnetic adsorption part on the catch body side in the direction perpendicular to the magnetic attraction part on the side of the catch body, the zigzag-shaped or V-shaped magnetic The suction surface and the suction surface are separated not in a direction perpendicular to these surfaces but in an oblique direction. Therefore, only a small separating force is required to separate the two pieces that are attracted to each other. In other words, when the magnetic catch holds the door in the closed position, the holding force for the door is reduced, but the door can be opened with a small opening force. Moreover, when the magnetic attraction surface and the surface to be attracted are separated, the magnetic attraction force between them does not decrease drastically as in the past, and the separation distance between the magnetic attraction part and the magnetic plate changes. In response to this, the magnetic adsorption force between the two will gradually decrease, so the door will no longer open violently due to reaction when opening the door, and the door will open smoothly and with a pleasant feel. I can do it. Of course, when closing the door, impactful collision between the magnetic attraction part and the magnetic plate can be avoided, and the door can be closed and held smoothly and with a good feel.

[Brief explanation of the drawing]

Figure 1 is a front view of the catch body, Figure 2 is a cross-sectional plan view with the magnetic plate attached to the magnetic attraction part, and Figure 3 is a vertical cross-sectional side view with the magnetic plate separated from the magnetic attraction part. FIG. 4 is a plan view showing a modified example, and FIG. 5 is a partially cross-sectional plan view illustrating still another modified example. l...catch body, 2...magnetic adsorption part, 3...
Magnetic plate, 4... Permanent magnet, 5... Yoke, 6...
Magnetic attraction surface (front end surface of yoke 5), 7... Case, end... Back and forth position adjustment means for magnetic attraction part 2, 9... Spiral shaft,
1O...Movable body, 11...Vertical shaft portion, 12...Elongated hole, 14...Adsorption surface.

Claims (1)

[Claims] A magnetic catch for furniture consisting of a combination of a magnetic plate and a catch body having a magnetic attraction part that attracts the magnetic plate with magnetic attraction force, wherein the attraction surface of the magnetic attraction part of the catch body is connected to the magnetic plate. A magnetic catch for furniture, which is formed in a V-shape or zigzag shape in a direction perpendicular to the adsorption/removal direction between the magnet catch and the magnetic plate, and the attracting surface of the magnetic plate is also formed in a V-shape or zigzag shape in accordance with the attracting surface. .