JPH0611336Y2 - Magnetic Totchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a magnetic catch that holds a door body of furniture or the like on a furniture body by using the attractive force of a magnet.

(Prior Art) Conventionally, in a furniture in which a front opening of a furniture body can be opened and closed by a door body, an iron piece is provided inside the opening / closing end side of the door body, and the front opening of the furniture body corresponding to the iron piece is provided. A magnet catch is provided inside the portion, and when the door body is closed, the iron piece faces the magnet catch, and the iron piece is attracted by this magnet catch to hold the closed state of the door body. However, due to the mounting position of the magnet catch on the furniture body, the gap between the magnet catch and the iron piece may be misaligned. For example, if the gap is large, the suction force will be insufficient, and the magnet catch will move forward from the furniture body. When the door body is largely displaced from the furniture body and protrudes from the furniture body, the door body may not completely close the front opening of the furniture body.

Therefore, as disclosed in, for example, Japanese Utility Model Laid-Open No. 59-128874, there is one in which the magnet body can be moved back and forth from the case of the magnet catch so that the suction interval can be adjusted.

In this magnet catch, a magnet body is housed in the case so as to be able to move forward and backward from the front opening of the case, and an adjusting screw is inserted into the magnet body from the front side in the forward and backward direction, and the adjusting screw is a nut provided on the magnet body. And the tip is rotatably connected to the case. Then, by rotating the adjusting screw, the nut moves in the front-rear direction while the adjusting screw remains in the fixed position, the magnet body moves with this nut and moves back and forth from the case, and the suction interval with the iron piece is adjusted. I can do it.

However, the adjustment screw is in place with respect to the case,
When the magnet body is advanced from the case, the head of the adjusting screw is pulled inward of the magnet body, and the tip of the screwdriver (especially the minus type screwdriver) is not fitted to the head of the adjusting screw. Have difficulty.

Therefore, as described in Japanese Utility Model Laid-Open No. 60-70168, the adjusting screw is rotatably provided at a fixed position on the magnet body, and the tip is screwed into a nut provided on the case,
When the adjusting screw is rotated, the adjusting screw moves forward and backward with respect to the nut, and the magnet body moves back and forth integrally with the nut, so that the head of the adjusting screw moves to the front of the magnet body. There is one that makes it easy to fit the driver by always facing.

However, since the adjusting screw moves back and forth integrally with the case together with the magnet body, the case accommodating the adjusting screw and the magnet body becomes large in the front-rear direction. That is, even when the magnet body is advanced from the case, the tip of the adjusting screw is screwed into the nut. On the other hand, when the magnet body is retracted into the case, the amount of backward movement of the magnet body is equal to the tip of the adjusting screw. Is to project backward from the nut.

(Problems to be solved by the invention) As described above, even in the magnetic catch in which the adjusting screw is integrally provided on the magnet body and the head of the adjusting screw is always faced to the front surface of the magnet body, the adjusting screw does not work. Since the magnet body moves back and forth with respect to the case integrally, there is a problem that the case becomes large in the front-rear direction.

The present invention has been made in view of the above points, and the rotation operating portion of the nut body screwed to the screw shaft fixed to the case is rotated along the screw shaft from the front surface of the frame body by a screwdriver or the like. It is an object of the present invention to provide a magnet catch capable of easily adjusting the suction interval of the magnet body and shortening the front-rear length of the case to a necessary minimum.

(Means for Solving the Problems) The magnet catch of the present invention includes a case having a housing portion having an opened front surface, a screw shaft provided at the rear portion of the case, and a forward and backward movement into the housing portion of the case from the front opening. A case body that accommodates a magnet body that has a yoke that can be accommodated and protrudes from the front surface of the case; and a nut body that is rotatably provided at a fixed position in the frame body and that is screwed into the screw shaft. Is formed in such a manner that a rectangular holding groove having a diameter larger than that of the through hole is communicated with the rear portion of the accommodation portion through a through hole in the front-rear direction, and the screw shaft is a screw shaft portion protruding from the through hole into the accommodation portion. And a rectangular head fitted to the holding groove is formed at the rear end of the screw shaft, and the frame has a receiving hole penetrating in the front-rear direction for housing the nut body. , A ring with a larger diameter than this receiving hole near the front end of this receiving hole. -Shaped receiving groove is formed, the nut body has a tubular portion rotatably fitted in the receiving hole of the frame body, and an inner screw portion in which the screw shaft portion is screwed inside the tubular portion. And a large diameter portion rotatably fitted in the annular receiving groove is formed at the front end portion of the tubular portion, and a rotation operation portion facing the front surface of the frame is formed at the front end portion of the large diameter portion. It was done.

(Operation) In the magnet catch of the present invention, by rotating the rotating operation portion of the nut body from the front surface of the frame body, the nut body is rotated at a fixed position in the frame body having the magnet body, and the inside of the nut body is rotated. The screw part is rotated forwards and backwards along the outer periphery of the screw shaft fixed to the case, the frame body having the magnet body is integrally moved in the front-rear direction through the nut body, and the magnet body of the frame body It is moved forward and backward with respect to the front surface, and the suction interval of the magnet body is easily adjusted.

(Embodiment) Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings.

FIG. 5 shows a usage state of the magnet catch, and a door body 4 is attached to a furniture body 2 having a storage portion 1 having an opened front surface so as to be openable and closable via a hinge 3, and inside the open / closed end of the door body 4. The iron piece 5 is attached, and a magnet catch 6 is provided inside the front opening of the furniture main body 2 corresponding to the position of the iron piece 5.

The magnet catch 6 has a case 11, as shown in FIGS. 1 to 4, which is composed of a case body 12 and a case cover 13 made of synthetic resin. The case body 12 is provided with a housing portion 14 having an open front surface and a lower surface, and a circular through hole 15 communicating with the housing portion 14 and the through hole 15 are formed at a substantially central position of a rear portion of the housing portion 14. A rectangular holding groove 16 communicating with the hole 15 is provided on the rear side. A case member 17 which can be separated from the lower portion of the through hole 15 and the holding groove 16 or the case body 12 is formed vertically.
It is composed by. Further, a flange portion 18 is provided on both sides of the case 11, and a mounting hole 19 is provided in the flange portion 18.

On the other hand, the case cover 13 is fitted and fixed to the bottom surface of the case body 12, and closes the lower surface of the housing portion 14. The case member 17 may be integrally formed on the upper surface of the case cover 13.

Then, a rectangular head 22 provided at the rear end of the screw shaft 21 is fitted in the holding groove 16 of the case body 12, and the screw shaft 21
The screw shaft portion on the front end side of 21 penetrates through the through hole 15 and projects into the accommodating portion 14.

A magnet body 31 is housed in the housing portion 14 of the case 11 so as to be able to move forward and backward, and the magnet body 31 is
Having a frame body 32, the magnet 34 is housed in a holding hole portion 33 that vertically penetrates through both side portions of the frame body 32, and
The yoke 36 is fitted in the fitting recesses 35 at the upper and lower portions of the holding hole 33 with the front end projecting from the front surface of the frame body 32, and pins (not shown) penetrating the magnet 34 and the upper and lower yokes 36 are press-fitted. The magnet 34 and the yoke 36 are attached to the frame 32.
Is fixed.

In the central portion of the frame body 32, a receiving hole 37 is formed which opens through the front and rear.
Is provided, and an annular receiving groove 38 having a diameter larger than that of the receiving hole 37 is provided near the front end portion of the receiving hole 37. The upper areas of the receiving hole 37 and the receiving groove 38 are formed by a frame member 39 which is vertically separable from the frame body 32.

A nut body 41 is rotatably accommodated in the receiving hole 37 of the frame body 32. The nut body 41 has a large-diameter portion 42 at its front end and the front end of the large-diameter portion 42. A rotary operation part 43 into which the tip of a screwdriver is fitted is provided in the part, and a cylindrical part 44 that is long in the front-rear direction is provided in the rear part of the large-diameter part 42, and an internal screw part 45 is provided inside the cylindrical part 44. The large diameter portion 42 is rotatably fitted in the receiving groove 38 of the frame 32, the tubular portion 44 is rotatably fitted in the receiving hole 37, and the rotation operation portion 43 is formed. The front surface of the frame body 32 is exposed through the receiving hole 37.

The magnet body 31 is accommodated in the accommodating portion 14 of the case 11, and the tip end of the screw shaft 21 is screwed into the inner screw portion 45 and inserted into the tubular portion 44 of the nut body 41. There is.

Then, as shown in FIG. 5, the magnet catch 6 is attached to the inside of the front end of the side plate of the furniture main body 2 to the case main body 12.
It is mounted by screwing a screw through the mounting hole 19 of the flange portion 18. In this attached state, the tip of the screwdriver is fitted into the rotation operation portion 43 of the nut body 41 to be rotated, whereby the magnet body 31 can be adjusted forward and backward toward the front surface of the furniture body 2.

In the state shown in FIG. 1, the magnet body 31 is most accommodated in the case 11, and the width of the yokes 36 of the magnet body 31 protruding from the case 11 is small.

On the other hand, by rotating the rotation operating portion 43 of the nut body 41 using a screwdriver, the nut body 41 rotates in the frame body 32 and is prevented from rotating with respect to the case 11.
The inner screw portion 45 screw-rotates on the outer side of 21 to advance and retreat, the nut body 41 and the frame body 32 integrally move to the front of the case 11, and both yokes of the magnet body 31 are moved as shown in FIG. The protrusion width of 36 from the case 11 is increased.

Further, by rotating the nut body 41 in the opposite direction to the above, the magnet body 31 is moved rearward, and the protrusion width of both yokes 36 of the magnet body 31 from the case 11 can be reduced.

In this way, by rotating the nut body 41, the magnet body 31 is moved back and forth with respect to the case 11, and the protrusion width of both yokes 36 of the magnet body 31 from the case 11 can be easily adjusted. Therefore, it is possible to easily adjust the attraction interval between the iron piece 5 provided on the door body 4 that opens and closes the front surface of the furniture body 2 and the magnet body 31.

Since the nut body 41 also moves back and forth integrally with the frame body 32 that moves forward and backward with respect to the case 11, the rotation operation part 43 of the nut body 41 always faces the front surface of the frame body 32, and the rotation operation part 43 is driven by the driver. Is easy to fit.

Further, the iron piece 5 of the door body 4 to be closed is attached to the magnet body 31 of the magnet catch 6 by the opening / closing operation of the door body 4.
The pressing force to the rear due to the contact with the external force and the external force such as the pulling force to the front when the iron piece 5 of the door body 4 to be released is separated, but since the screw shaft 21 and the nut body 41 are screwed together, The nut body 41 does not rotate by an external force, and the width of protrusion of the magnet body 31 from the case 11 is kept constant.

Further, since the screw shaft 21 is provided in the case 11 and the nut body 41 is provided in the magnet body 31 that moves forward and backward with respect to the case 11, the tip end side of the screw shaft 21 that is long in the front-rear direction is the magnet body 31.
It is located inside the case to make effective use of the space, and the case 11
The front-rear length can be set to the minimum required dimension.

Further, since the inner screw portion 45 that is screwed into the screw shaft 21 of the nut body 41 is formed inside the cylindrical portion 44 that is long in the front-rear direction, it is possible to lengthen the screwing margin with the screw shaft 21 and to use a magnet. body
There is little rattling of 31.

[Effect of device]

According to the present invention, a rectangular holding groove communicating with the housing recess is formed in the rear portion of the case, and the rectangular head portion of the screw shaft portion protruding into the housing recess is fitted in the holding groove. The screw shaft can be securely fixed and held in the rear part of the case in a non-rotatable state.

Further, an annular receiving groove having a larger diameter than the receiving hole is formed in the vicinity of the front end of the receiving hole in the front-rear direction formed through the frame body having the magnet body, and the nut body rotatably fitted in the receiving hole is formed. The screw shaft portion of the screw shaft is screwed into the inner screw portion of the tubular portion, and the large diameter portion of the front end portion of the cylindrical portion is rotatably fitted in the annular receiving groove. Since the rotation operation part of the front end of the above was exposed to the front surface of the frame body, the rotation operation part of the nut body screwed to the screw shaft portion held in the case should be rotated from the front surface of the frame body with a screwdriver or the like. Thus, the attraction interval of the magnet bodies can be easily adjusted and set along the screw shaft portion.

At this time, the screw shaft portion is securely held in the case while entering the inside of the frame body and does not move forward and backward, and the frame body having the magnet body moves forward and backward with respect to the screw shaft portion. The space can be effectively utilized, and the front-rear length of the case accommodating the frame body so as to be able to move forward and backward can be shortened to the minimum necessary size.

Also, since the inner screw part of the nut body cylinder is screwed into the screw shaft part held in the case, it is possible to lengthen the screwed screw allowance of these mutually screwed parts, and these mutual parts will not come off due to erroneous operation. Even when there is a gap between the housing portion of the case and the frame body, the frame body can be adjusted forward and backward in a stable state without rattling.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the magnet catch of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a sectional view in an operating state corresponding to FIG. FIG. 5 is a cross-sectional view of the furniture showing a use state. 6 …… Magnet catch, 11 …… Case, 14 …… Accommodation part, 15 …… Through hole, 16 …… Holding groove, 21 …… Screw shaft, 22 ……
Head, 31 ... Magnet body, 32 ... Frame body, 37 ... Receiving hole,
38 …… Receiving groove, 41 …… Nut body, 42 …… Large diameter part, 43 …… Rotating operation part, 44 …… Cylinder part, 45 …… Inner screw part.

Claims (1)

[Scope of utility model registration request] 1. A case having a housing portion whose front surface is opened,
A screw shaft provided at a rear portion of the case, a frame body accommodating a magnet body having a yoke projecting from the front surface of the case accommodated in the accommodating portion of the case so as to be able to move forward and backward, and a fixed position in the frame body. And a nut body that is rotatably provided and is screwed into the screw shaft, and the case has a rectangular holding groove having a diameter larger than the through hole formed in the rear portion of the accommodating portion through the through hole in the front-rear direction. The screw shaft has a screw shaft portion projecting from the through hole into the housing portion, and a rectangular head fitted to the holding groove is formed at the rear end of the screw shaft portion. The frame body has a receiving hole that penetrates in the front-rear direction for accommodating the nut body, and an annular receiving groove having a larger diameter than the receiving hole is formed in the vicinity of the front end of the receiving body. , Has a tubular portion rotatably fitted in the receiving hole of the frame body, and the inside of the tubular portion An inner threaded portion in which the screw shaft portion is screwed, and a large diameter portion rotatably fitted in the annular receiving groove is formed at the front end portion of the cylindrical portion, and a front end portion of this large diameter portion is formed. A magnet catch characterized in that a rotation operation portion facing the front surface of the frame is formed.