JP2008175026A - Magnet catcher of sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce an impulsive sound generated in response to an attraction release of a magnet by sliding door opening operation, in a magnet catcher of a sliding door constituted for pulling a movable body having the magnet on the tip side and arranged protrudingly and retreatingly from a body, in the body by a coil spring. <P>SOLUTION: This magnet catcher 1A is constituted so that the movable body 11 having the magnet 110 on the tip side is inserted retractively in the tip side of the opening end 12f of a sliding hole 12a arranged in a catcher body 10A, and is energized in the immersing direction by a coil spring 11d, and after extracting the movable body 11 by a predetermined quantity from the opening end 12f by opening a sliding door 3 from a closing state, the movable body 11 is retracted in the catcher body 10A by releasing attraction. A buffer 14 composed of an elastic raw material or a flexible raw material is arranged on the base end side of the sliding hole 12a, and the buffer 14 absorbs a shock by a collision of the movable body by abutting on a base end surface (x) of the movable body 11 in the final part of retractive motion of the movable body 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a magnet catcher that attracts a sliding door to a frame or a column with a magnetic force so that the sliding door that contacts the frame or the column does not rebound or inadvertently open when closing the sliding door.

  A technique for bringing a sliding door into close contact with a frame or a pillar is well known as described in, for example, Japanese Patent Application Laid-Open No. 9-291751, and an adsorbed body composed of a magnet and a magnetic body to which the magnet is adsorbed. A magnet catcher composed of a pair of is widely used in the fields of joinery and storerooms.

  However, these conventional sliding door magnet catchers, when installed in such a way that the frame body is distorted or deformed to create a gap on the contact surface between the sliding door and the frame body, the magnet attracts the rebound of the closed sliding door. You may lose power and not close completely. In addition, when the sliding door is tightly attached to the frame without distortion on the frame side, the sliding door closes tightly and maintains a good closed state. Power is required. For this reason, in addition to the heavy burden of operations for children and the elderly with weak power, there is the disadvantage of excessively pulling the sliding door too much, making it inconvenient.

  In response to this problem, the applicant of the present application has proposed a magnetic catcher for a sliding door as shown in FIG. 6 in Japanese Patent Application Laid-Open No. 2000-248811. This magnet catcher 1B is provided with a substantially cylindrical movable body 11 having a magnet 110 on the tip side in a case 12B of a catcher body 10B provided on a sliding door 3, and the magnet 110 and the catcher adsorbed to each other. When the to-be-adsorbed body 21 provided on the receiver 20 opens the sliding door 3 from the closed state of the sliding door 3 (FIG. 6A), the movable body 11 is separated from each other by the elastic repulsive force of the coil spring 11d. The opening end 12f of 12B and the front end surface on which the magnet 110 is provided are flush with each other and retracted into the case 12B (FIG. 6B) so as to be accommodated.

  By adopting such a configuration, even in the case of building where there is a gap between the sliding door 3 and the frame body 2, the movable body 11 is pulled out from the catcher body 10B to maintain the engagement of the sliding door, When the sliding door 3 is opened, the movable body 11 is further pulled out from the catcher body 10B, so that the initial motion is accompanied with inertia, and the magnet 110 can be easily shaken off.

By the way, the thing which has the structure which draws in the main body with a coil spring including the magnet catcher 1B which can be moved in and out from the main body case into the main body with a coil spring, at the moment when the adsorption of the magnet 110 is completely shaken, is shown in FIG. As shown in B), the base end side surface y of the head portion 11b of the movable body 11 collides with the front end side surface z of the partition wall 12d of the case 12B by the elastic repulsive force of the coil spring 11d to generate an impact sound. For this reason, there has been a problem of discomforting nearby people and disturbing sleep.
Japanese Patent Application Laid-Open No. 9-295151 JP 2000-248811 A

  The present invention is intended to solve the above-described problems, and relates to a magnet catcher having a configuration in which a movable body provided with a magnet on the tip side so as to be able to protrude and retract from the main body is drawn into the main body by a coil spring. It is an object to reduce the impact sound that is generated when the magnet is released by the opening operation.

  Therefore, the present invention provides a catcher main body provided on one abutting surface where the sliding door and the frame abut, and an adsorbent to which a magnet provided in the catcher main body provided on the other abutting surface is adsorbed. The movable body having a magnet on the tip side is inserted so that the tip side can be protruded and retracted from the opening end of the sliding hole provided in the catcher body, and the coil spring is used in the direction of immersion. The movable body is pulled out from the opening end against the elastic repulsive force of the coil spring by opening the sliding door from the sliding door closed state where the magnet and the object to be adsorbed are attracted, and then the magnet is used. In the magnetic catcher of a sliding door where the movable body is pulled into the catcher body with the distal end surface being substantially flush with the open end by releasing the adsorption, an elastic material or soft Provided a cushioning member made of material, the cushioning member is intended, characterized by buffering the impact due to contact movable body collides with the proximal end face of the movable body in the final portion of the pull-in operation the movable body.

  In this way, the shock that accompanies the desorption of the magnet during the sliding door opening operation can be easily buffered by a simple configuration in which the buffer member that contacts the base end surface is provided in the sliding hole immediately before the retracting operation of the movable body is completed. The impact sound at that time can be effectively reduced. In addition to this, a stopper member for fixing the base end side of the coil spring is usually fixed to the base end surface of the movable body with a screw screwed in the axial direction. When the screw that has been fastened by being brought into contact with the member every time is loosened, the expansion of the looseness is suppressed, which helps to prevent the parts from being disassembled.

  Also, if this buffer member is projected from the inner surface of the lid member that closes the sliding hole opening on the base end side of the catcher body, it is only necessary to mount the lid member integrally with the buffer member The buffer member is mounted at the position, and the addition of the buffer member does not involve an excessive increase in the number of processes. In this case, if the lid member is made of an elastic resin material, it can be elastically deformed at the time of collision of the movable body to increase the buffering force of the buffer member and absorb the impact sound leaking outside the case. Can be minimized.

  Furthermore, in the above-described magnet catcher, the buffer member is formed of a resin material, and a plurality of convex portions having a uniform height in the axial direction are provided on the tip side surface at the tip side surface at a uniform interval. In this case, the tip portions of all the convex portions integrally come into contact with the movable body base end surface, and the impact sound is less likely to be generated. In this case, if the buffer member is cylindrical and the center is aligned with the center of the circular front end surface, and the convex portions are arranged in an annular shape and at equal intervals, the resin material will be more excellent. If silicon rubber is used, it will be more excellent in shock absorption due to the viscoelasticity of the material.

  Furthermore, in the above-described magnet catcher, if the object to be adsorbed is adsorbed by magnet parts having different polarities as magnets, the adsorbing force can be made stronger.

  According to the present invention, in which the shock absorbing member that cushions the impact by abutting against the movable body base end surface is provided at the final part of the retracting operation of the movable body, it is possible to effectively reduce the impact sound caused by releasing the magnet by the sliding door opening operation. It can be done.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 to 4 show a magnetic catcher 1A for a sliding door according to the present embodiment. Referring to FIG. 4 showing the attachment state of the magnet catcher 1A, the magnet catcher 1A is opposed to the contact surfaces 35 and 36 of the frame body 2 and the sliding door 3 running on the rail 34 below the frame body 2. In the present embodiment, the catcher body 10A is embedded in the contact surface 36 on the sliding door 3 side, and the catcher receiver 20 is embedded on the contact surface 35 on the frame body 2 side. Has been.

  Referring to FIG. 1 showing an enlarged longitudinal sectional view of a magnet catcher 1A, the catcher body 10 has a synthetic resin having a sliding hole 12a extending in the axial direction and having a partition wall 12d and a stopper step 12e on its inner peripheral wall. A cylindrical case 12A made of metal, a lid member 13 for closing the base end side opening of the case 12A, and a coil spring 11d in the case 12A so that the tip end side can be retracted from the tip end opening end 12f of the case 12A. And a substantially cylindrical movable body 11.

  The movable body 11 is composed of a shaft portion 11a and a head portion 11b having a larger diameter on the tip side thereof, and the shaft portion 11a slidably penetrates the bearing portion 122 at the center of the partition wall 12d. The head 11b of the movable body 11 has a disc-shaped magnet 110 embedded on the tip side of the head 11b, and the tip and side surfaces except for the central portion are covered with a thin magnet cover 111 made of synthetic resin. Yes. A dish-like stopper cap 11c is fixed to the base end side of the shaft portion 11a with a screw 32.

  The coil spring 11d around the shaft portion 11a has one end abutting against the distal end side surface of the stopper cap 11 and the other end resiliently abutting against the base end side surface of the partition wall 12d, and elastically retracting the movable body 11 into the case 12A. It is worn while maintaining power. The movable body 11 is inserted so as to be slidable in the axial direction in the sliding hole 12a. When the movable body 11 is drawn into the case 12A by the coil spring 11d, the distal end surface thereof, that is, the distal end surface of the magnet cover 111 is the case. It is designed to be flush with the opening end 12f on the front end side of 12A.

  On the other hand, the catcher receiver 20 is a disk-shaped disc made of a magnetic material such as iron, for example, and a to-be-adsorbed body 21 fixed by a single screw 31 penetrating the central axis, and an impact adhered to cover the surface. It is comprised from the disk-shaped receiving plate 22 formed with elastic resin materials, such as rubber | gum for absorbing.

  As shown in the front view of FIG. 2 (A), the catcher body 10A has a thread 12b in which a case 12A constituting the same protrudes spirally on the outer peripheral surface of a resin-made cylindrical member. It is firmly fixed to the sliding door 3 just by screwing into the mounting hole 3a (see FIG. 1). Further, as shown in the left side view of FIG. 2B, engaging recesses 12c, 12c, 12c, and 12c are annularly provided at equal intervals on the opening end 12f side of the sliding hole 12a. By engaging and rotating the claws 52 and 52 of the mounting bracket 50 as shown in FIG. 5, the mounting and dismounting to the mounting hole 3a can be performed relatively easily.

  The above-described components are substantially the same as those of the conventional sliding door magnet catcher 1B of FIG. 6, but the components described below are characteristic features of the present invention. That is, as shown in FIG. 1, the buffer member 14 is projected from the inner surface of the lid member 13 that closes the proximal end side opening of the sliding hole 12a that passes through the case 12A, and the movable body 11 is connected to the distal end thereof. When the surface is retracted flush with the front end surface of the case 12A, the stopper cap 11c comes into contact with the base end surface x, and the engagement between the magnet 110 and the attracted member 22 is released by the opening operation of the sliding door 3. When this is done, it is characterized in that the impact sound caused by the return motion of the movable body 11 by the coil spring 11d is buffered.

  As the buffer member 14, an elastic resin material or a soft resin material formed in a substantially disk shape is used. However, a material having high flexibility such as silicon rubber is excellent in terms of impact absorption and impact noise prevention. The buffer member 14 is provided with a plurality of (eight in the present embodiment) protrusion-shaped convex portions 14b at an equal interval with the center aligned with the center of the circular tip side surface of the base portion 14a. Thus, the stopper cap 11c is brought into point contact with the base end surface x at the front end side of each convex portion 14b.

  In addition, a mushroom-like engaging portion 14c protrudes from the side opposite to the surface provided with the convex portion 14b, and is fitted into and engaged with the mounting hole 13a penetrating through the center of the lid member 13 to project the large diameter portion. In this state, the buffer member 14 is attached to the base end side of the case 12A with the buffer member 14 provided. It is fixed at a required position in the sliding hole 12a.

  Next, the operation of the sliding door magnet catcher 1A according to the present embodiment will be described in detail with reference to FIG.

  When the catcher body 10A embedded in the sliding door 3 is brought close to the catcher receiver 20 embedded in the frame body 2 by the closing operation of the sliding door 3 (FIG. 3A), the receiving plate 22 of the catcher receiver 20 and the catcher body 10A. When the distance between the magnet 110 and the magnet 110 falls within a predetermined distance, the magnetic attracting force between the attracted body 22 of the catcher receiver 20 and the magnet 110 of the catcher body 10A exceeds the elastic repulsion of the coil spring, and the movable body 11 is placed in the case. 12A is pulled out and adsorbed (FIG. 3B).

  Thereby, for example, even if the frame 2 is poorly built and there is a gap with the frame 2 when the sliding door 3 is closed, the sliding door 3 is maintained in the closed state as long as it is within the protruding distance of the movable body 11. Or, even if the sliding door 3 is roughly closed, it can be avoided that the sliding door 3 bounces off the frame body 2 and remains open. Note that the distal end surface of the head 11b of the movable body 11 is covered with a magnet cover 111 except for the central portion, and the resin magnet cover 111 having a predetermined thickness is present near the edge of the distal end surface of the magnet 110. The relatively hard magnet 110 and the head of the fixing screw protruding on the surface of the catcher receiver 20 do not collide directly, and the impact sound when adsorbed by the closing operation of the sliding door 3 is minimized. It is suppressed.

  In the opening operation of the sliding door 3, the movable body 11 is pulled out while compressing the coil spring 11d until the stopper cap 11c of the movable body 11 abuts against the stopper step 12e of the sliding hole 12a. Even if 3 is in close contact with the frame 2 and is magnetically attached, inertia is accompanied at the initial movement of the sliding door 3, so that the magnet 110 can be easily shaken off and released (FIG. 3C).

  At this time, in the conventional example of FIG. 6, the head end 11b proximal end side surface y of the movable body 11 collides with the distal end side surface z of the partition wall 12d to generate an impact sound. In the present embodiment, the movable body 11 11, the base end surface x of the stopper cap 11c abuts against the buffer member 14 to buffer the impact, and the base end side surface y of the head portion 11b does not collide with the front end side surface z of the partition wall 12d.

  As a result, it is possible to significantly reduce the impact sound by absorbing the impact associated with the release of the adsorption of the magnet 110 during the sliding door opening operation. Further, by making point contact at each tip of the warped convex portions 14b provided in a ring shape on the tip side surface of the buffer member 14, a higher buffering effect is exhibited and impact noise is hardly generated. . Furthermore, when the disc-like lid member 13 that supports the buffer member 14 is formed of, for example, a hard polyamide resin as appropriate, the impact absorbing force is increased by bending in the axial direction when the movable body 11 collides. In addition, it has excellent durability and minimizes the diffusion of impact sound to the outside.

  As described above, even when the base end side of the case 12A is closed with the lid member 13 having the buffer member 14 on the inner surface, the screw 32 for fixing the stopper cap 11c on the base end side of the movable body 11 is somewhat loosened. The buffer member 14 abuts on the screw head side every time and can be prevented from further loosening, and there is also an advantage that the trouble that the parts constituting the base end side of the movable body 11 are disassembled apart can be avoided.

  Further, in the present embodiment, the catcher body 10A is provided on the sliding door 3 side and the catcher receiver 20 is provided on the frame body 2 side. However, the same effect can be expected even if these are provided in reverse. . Further, in the present embodiment, the object to be adsorbed 21 of the catcher receiver 20 is made of a magnetic material such as iron and the movable body 11 is provided with the magnet 110 so that they are adsorbed to each other. A magnetic body may be used in place of the magnet of the movable body 11 with the body 21 as a magnet, and if the poles facing each other are made of different magnetism, the attracted body 21 and the movable body 11 of the catcher receiver 20 are each magnet 110. May be used.

  As described above, the magnet catcher having a magnet on the tip side and protruding from the main body with a coil spring is drawn into the main body with a coil spring, and the magnet at the time of sliding door opening operation is provided according to the present invention having a relatively simple configuration. The impact sound that accompanies desorption can be effectively reduced without excessive costs.

The longitudinal cross-sectional view which shows embodiment of this invention. (A) is a front view showing the catcher body in a state where the movable body of the magnet catcher of FIG. 1 is drawn, (B) is a left side view of (A), and (C) is a right side view of (A). (A), (B), (C) is a longitudinal cross-sectional view for demonstrating the effect | action of the magnet catcher of FIG. The front view which shows the attachment state of the magnet catcher of FIG. Mounting bracket for attaching the magnet catcher of Fig. 1 to the sliding door side. (A), (B) is a longitudinal cross-sectional view for demonstrating the effect | action of a prior art example.

Explanation of symbols

1A magnet catcher, 2 frame, 3 sliding door, 3a mounting hole, 10A catcher body, 11 movable body, 11a shaft, 11b head, 11c stopper cap, 11d coil spring, 12A case, 12a sliding hole, 12b thread, 12c engaging recess, 12d partition, 12f open end, 13 plug, 13a mounting hole, 14 cushioning member, 14a base part, 14b convex part, 14c engaging part, 20 catcher receiver, 21 adsorbed body, 22 backing plate , 31, 32 Screw, 35, 36 Contact surface, 34 Rail, 110 Magnet, 50 Mounting bracket, 52 Claw, 111 Magnet cover, 122 Bearing part

Claims (7)

  A catcher body provided on one abutment surface where the sliding door and the frame abut, and a catcher receiver having an adsorbed body provided on the other abutment surface and adsorbed by a magnet included in the catcher body. The movable body having the magnet on the tip side is inserted so as to be able to protrude and retract from the opening end of the sliding hole provided in the catcher body, and is biased by a coil spring in the immersion direction, The movable body is pulled out from the opening end by a predetermined amount against the elastic repulsion force of the coil spring by opening the sliding door from the sliding door closed state where the magnet and the attracted body are attracted, and then attracted by the magnet In the magnetic catcher of the sliding door, the movable body is drawn into the catcher body with the distal end surface being substantially flush with the open end by releasing the sliding hole. A shock-absorbing member made of an elastic material or a soft material is provided on the base end side, and the shock-absorbing member abuts against the base-end surface of the movable body at the final portion of the movable body retracting operation to buffer the impact caused by the movable body collision. A magnetic catcher for sliding doors.   2. The magnetic catcher for a sliding door according to claim 1, wherein the buffer member protrudes from an inner surface of a lid member that closes a sliding hole opening on the base end side of the catcher body. 3.   The magnetic catcher for a sliding door according to claim 2, wherein the lid member is made of an elastic resin material.   The shock-absorbing member has a plurality of convex portions projecting at a uniform height in the axial direction from the front end side surface formed of a resin material, and the movable body base end surface is formed at the front end portions of all the convex portions. The magnetic catcher for a sliding door according to claim 1, 2 or 3, which abuts.   5. The magnetic catcher for a sliding door according to claim 4, wherein the buffer member is formed in a columnar shape, the center thereof coincides with the center of a circular front end surface, and the convex portions are continuously arranged at equal intervals.   The magnetic catcher for a sliding door according to claim 4, wherein the resin material is silicon rubber. The magnet catcher for a sliding door according to claim 1, wherein the object to be adsorbed is a magnet and is adsorbed by portions of the magnets having different polarities.

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