JPH0229683Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of a magnetic lock for easily temporarily locking the doors and drawers of various chests of drawers, wooden cabinets, and other furniture. The screw shaft allows efficient installation work, and is designed to provide a stable and solid fixation that will never swing or rattle once installed. It is.

Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated embodiment. In FIGS. 1 to 5 showing the disassembled state and assembled state of the magnetic catch,
Reference numeral 1 denotes a magnetic storage case, which is molded from ABS resin or other synthetic resin into a U-shaped square box with an open front and bottom. Reference numeral 2 refers to a shaft tube integrally projecting downward from the approximate center of the case 1, and its opening shape is an elongated ellipse in the front and back direction when viewed from the top. It is designed to be able to exert a longitudinal adjustment effect.

Reference numeral 3 designates a pair of left and right yoke plate receiving notches which are opened in both side walls of the case 1 at a position forward of the protruding position of the shaft cylinder 2, and both of the notches are open above. This makes molding of Case 1 itself easier and smoother. However, as long as the lower yoke plate, which will be described later, can be assembled and locked into the case 1 without falling, a pair of left and right protrusions 4 instead of the notches 3 may be integrally projected from both side walls of the case 1 as shown in FIG. Alternatively, other configurations may be adopted.

Further, reference numeral 5 denotes a square plate-shaped magnet, and a long hole 6, which corresponds to and fits into the shaft cylinder 2, is formed through the substantially central portion of the magnet. Reference numerals 7 and 8 denote a pair of upper and lower iron yoke plates that sandwich the magnet 5, both of which have a rectangular shape that is approximately the same as the magnet 5, and each of which has a central portion corresponding to the shaft cylinder 2 of the case 1. Elongated holes 9 and 10 for fitting are opened through. Then, the upper yoke plate 7, the magnet 5, and the lower yoke plate 8 are assembled and housed in the case 1 in order from the bottom through the fitting action of the shaft tube 2 and each elongated hole 9, 6, 10. It is attached and fixed to the furniture F by a screw or other screw shaft 11 that is passed through the shaft tube 2 from above. In the attached state, both yoke plates 7 and 8 slightly protrude forward from the case 1 by a certain length L, and of course come into close contact with a catch seat (not shown) to temporarily lock a door or the like.

In that case, in order to prevent the case 1 from falling off from below, a pair of left and right locking tongues 12 corresponding to the notches 3 of the case 1 are laterally jutted out from the lower yoke plate 8. During the above-mentioned assembly, the case 1 is releasably engaged with the notch 3 of the case 1. At this time, the U-shaped case 1 is forcibly expanded from below due to its cross-sectional shape and the elasticity of the synthetic resin itself. If it can be assembled without falling through such an action, the locking tongue piece 12 of the lower yoke plate 8 may be omitted in relation to the protrusion 4 shown in FIG. 12 may be formed on both side walls of the case 1 side, and the above-mentioned notch 3 may be formed on the lower yoke plate 8 side.

In this way, the lower yoke plate 8 is supported at three points in total: two points A and B by the pair of tongues 12 that lock into the notch 3, and one point C by the elongated hole 10 that fits into the shaft tube 2. It is then assembled into the case 1 in a stable and correct horizontal position. Reference numeral 13 designates a pair of left and right fixing claws that are integrally bent downward from the rear end of the lower yoke plate 8, and are made by punching and bending press work from an iron plate. The claws 13 act to bite the furniture F, and therefore, in the assembled state with the case 1, they protrude downward from the case 1 by a certain length H in advance.

Although the number and protruding position of the fixing claws 13 can be freely selected, it is preferable that the first
As is clear from FIGS. 5 to 5, the lower yoke plate 8 is provided as a pair of left and right pieces projecting separately from the rear corner positions of the lower yoke plate 8. This is because the protruding tip portion of the claw 13 can be easily and reliably sharpened by the shearing blade when punching the iron plate, and the biting force on the furniture F can be further improved. Of course,
The shearing blade allows the two pawls 13, including the locking tongue piece 12 of the lower yoke plate 8, to be punched and formed at the same time.

Further, the pair of left and right fixing claws 13 face each other at a constant interval, and as shown in FIG. With a total of three points of support, including one point C of the shaft 11, it can be fixed to furniture F more stably, and the overall swing around the one screw shaft 11 and wobbling can be prevented. This is because such problems can be effectively prevented. The above three points C,
The virtual triangle with D and E as vertices is an isosceles triangle, and each side of the virtual triangle forms a line segment as long as possible, which also contributes to achieving the above effect. The above three points A, B, of the lower yoke plate 8 with respect to the case 1
The same figure also suggests that the virtual triangle with C as the vertex is also an isosceles triangle, and as described above, it can be said that the assembled state has excellent stability.

When attaching the magnetic catch configured as described above to furniture F, one screw or other screw shaft 11 must be passed through the shaft tube 2 of the case 1 from above as shown in FIGS. 7 to 9. All you have to do is screw it into the wooden interior of Furniture F. Then, the fixing claw 13 of the lower yoke plate 8, which has been assembled in advance into the case (1) in a horizontal and stable state, bites into the wooden interior of the furniture F as the screw shaft 11 spirals. Therefore, the magnetic catch as a whole is fixed stably and robustly without swinging around the single screw shaft 11 or floating up from furniture F and shaking. That's what happens. It goes without saying that when the screw shaft 11 is used for mounting, the mounting position can be adjusted by sliding in the front and back direction by using the elongated hole of the shaft tube 2.

As described above, the magnetic catch of the present invention includes a magnetic storage case 1 made of synthetic resin shaped like a square box with an upright U-shape and open at the front and bottom, and a magnetic storage case 1 that is attached to the side wall of the case 1. It consists of a lower yoke plate 8 that is removably locked to sandwich the magnet 5 housed in the case 1 so that it cannot fall between the upper yoke plate 7 that is also housed. At the same time, the fixing claws 13 and the screw shafts 11 are attached to the furniture F by a screw shaft 11 that penetrates the furniture F, and by protruding a required number of fixing claws 13 from the lower yoke plate 8 that bite into the furniture F. Since the magnetic catch is configured to be fixed to furniture F under at least two points of support, the magnetic catch can be fixed to furniture F by using only one screw shaft 11.
Installation work to furniture F type can be done extremely simply and efficiently.

Moreover, despite its excellent workability, once installed, the overall stability and sturdiness is achieved not only by the screw shaft but also by the biting force of the fixing claw 13 protruding from the lower yoke plate 8 against the furniture F. This results in a securely fixed state, and the wobbling around the screw shaft 11 and wobbling due to floating from the furniture F are reliably prevented. Furthermore, the necessary configuration to achieve this effect is extremely simple, and Case 1
It can be easily mass-produced by molding synthetic resin and pressing the yoke plates 7 and 8.
It can be said that it is very profitable.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the disassembled state of the present invention, Figures 2 and 3 are perspective views of the assembled state seen from below and above, Figure 4 is a semi-cutaway sectional plan view, and Figure 5 is a 3 is a sectional view taken along line X-X, FIG. 6 is a perspective view showing a modification of the storage case, FIG. 7 is a side sectional view showing how it is attached to furniture, and FIGS. 8 and 9 are 6 It is a sectional view along the YY line and the ZZ line of the figure. 1...Storage case, 2...Shaft cylinder, 3...Notch,
5... Magnet, 7, 8... Yoke plate, 11... Screw shaft, 12... Locking tongue piece, 13... Fixed claw.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A magnetic storage case 1 made of synthetic resin formed in the shape of a square box with an upright U-shape and open at the front and bottom; It consists of a lower yoke plate 8 which, together with an upper yoke plate 7 also housed, holds the magnet 5 housed in the case 1 so that it cannot fall when the magnet 5 is stopped. It is attached to the furniture F type by the screw shaft 11, and the required number of fixing claws 13 are attached to the furniture F type from the lower yoke plate 8.
By projecting out, the fixing claw 13 and the screw shaft 11 are supported at at least two points.
A magnetic catch characterized by being set to be fixed to furniture F category. 2 From the rear end corner position of the lower yoke plate 8 to the fixing claw 1
3 are bent up as a pair on the left and right, and are set to be fixed to furniture F category under the three-point support state of the two fixing claws 13 and the screw shaft 11. A magnetic catch according to claim 1. 3. When removably locking the lower yoke plate 8 to the side wall of the case 1, a pair of left and right locking tongues 12 are protruded from the lower yoke plate 8, and a corresponding receiving tongue is attached to the side wall of the case 1. Open the notch 3 and insert the tongue piece 1 from the bottom of the case 1 into the notch 3.
2. A magnetic catch according to Claim 1 of the Utility Model Registration Claim, characterized in that 2 is removably locked.