JP3089200U - Door stopper - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To completely prevent a problem that a non-slip plate can be effectively prevented from peeling, and a yoke directly contacts other objects such as a door or a floor and damages them. Provide a door stopper to get. SOLUTION: A magnet unit 5 in which a permanent magnet 4 is housed and fixed in a shallow bottom dish-shaped yoke 3 having an adsorption surface 2 side opened, and a leg member 6 rotatably attached to the magnet unit 5.
A flat plate portion 8 that covers the attraction surface 2 of the magnet unit 5 so as to cover the attraction surface 2 side of the magnet unit 5; And a non-slip plate having an external fitting portion extending along the side surface and externally fitted to the yoke.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a door stopper that is detachably fixed to a door by magnetic force.

[0002]

[Prior art]

 As a door stopper, Japanese Utility Model Laid-Open Publication No. 6-40258 discloses a magnet unit in which a permanent magnet is housed and fixed in a shallow dish-shaped yoke having an adsorbing surface opened, and the magnet unit is rotatable. And a non-slip plate that covers the attraction surface of the permanent magnet. This door stopper is configured such that a magnet unit is fixed by magnetic force to the vicinity of the lower end on the free end side of the door, the legs abut against the floor surface, and the door can be held at a desired angular position. .

[0003]

[Problems to be solved by the invention]

 In the door stopper, a non-slip plate made of synthetic resin or synthetic rubber is fixed to a permanent magnet with an adhesive. However, when a load is applied to the door stopper in the in-plane direction of the door surface, the non-slip plate is used. Stress concentration occurs at the bonding end of the door with the yoke and the permanent magnet, and a magnetic force acts on the door through the non-slip plate to hold the door stopper by suction.Therefore, it is necessary to use a thin anti-slip plate. For this reason, there was a problem that the anti-slip plate peeled off and turned up in a relatively short period of time, and the end of the yoke was in direct contact with the door, damaging the door.

[0004] Further, when the door stopper is attached to or detached from the door, if the door stopper is dropped, a corner of the metal yoke hits the door or the floor, which may cause a problem.

[0005] An object of the present invention is to effectively prevent the non-slip plate from peeling off, and completely solve the problem that the yoke directly contacts and damages other objects such as doors and floors. It is to provide a door stopper to get.

[0006]

Means for Solving the Problems and Their Functions

 The door stopper according to the present invention includes a magnet unit in which a permanent magnet is housed and fixed in a shallow bottom dish-shaped yoke with an open suction surface, a leg member rotatably attached to the magnet unit, A non-slip plate attached to cover the attraction surface side of the magnet unit, the plate portion covering the attraction surface side of the magnet unit, and extending along an outer surface of the yoke from an outer peripheral portion of the plate portion to the outside of the yoke. And a non-slip plate having an external fitting portion to be fitted.

In this door stopper, the magnet unit is mounted near the lower end of the door, the leg member is turned downward, and the lower end is brought into contact with the floor, so that the door is at a desired angular position. It can be fixed. In addition, since the magnet unit is attracted and held to the door via the non-slip plate, the slip of the magnet unit with respect to the door is prevented by the non-slip plate. In addition, an outer fitting portion is formed on the outer peripheral portion of the anti-slip plate and extends toward the bottom surface of the yoke along the outer surface of the yoke, and the flat portion and the outer fitting portion cover the corners of the yoke. The outer fitting portion receives the force in the in-plane direction of the flat plate portion between the magnet unit and the anti-slip plate, and effectively prevents the anti-slip plate from peeling, so that the corner of the yoke is directly on the surface of the door. This can prevent the problem of damaging the door surface when hitting. In addition, since the corner of the yoke is covered with the flat plate portion and the outer fitting portion, even when the door stopper is dropped, for example, when the door stopper is removed from the door, the corner of the yoke may be covered by the door or floor. Door and floor can be prevented from being damaged.

Here, an auxiliary fixing plate made of a magnetic material may be fixed at a position where the magnet unit is attached to the door, and the magnet unit may be attracted and held to the door via the auxiliary fixing plate. If the door is made of an iron-based metal, the door stopper can be directly sucked and held against the door, but if the door is made of an aluminum alloy or wood, it cannot be sucked and held. Therefore, an auxiliary fixing plate made of a magnetic material is provided, and in the case of an aluminum alloy or wooden door, the auxiliary fixing plate is fixed in advance to a desired position of the door with an adhesive or a double-sided tape, and the auxiliary fixing plate is fixed. By holding the magnet unit against the plate, the door stopper can be assembled to the door.

[0010] A restriction protrusion for restricting slippage of the magnet unit with respect to the auxiliary fixing plate may be formed near the outer periphery of the auxiliary fixing plate so as to surround the magnet unit. With this configuration, the sliding of the magnet unit with respect to the auxiliary fixing plate is restricted, so that the door stopper can be more stably fixed.

[0010] A fitting projection that fits into the magnet unit in an uneven manner may be formed integrally with the anti-slip plate. With this configuration, the fitting protrusion of the anti-slip plate engages with the permanent magnet or yoke of the magnet unit, so that the mounting strength of the anti-slip plate with respect to the magnet unit can be improved.

[0011] A ring portion protruding inward from the free end of the outer fitting portion of the anti-slip plate and pressed against the outer peripheral surface of the yoke may be formed. When such a ring portion is formed, it is possible to reliably prevent a gap from being formed between the free end portion of the outer fitting portion and the yoke, and furthermore, to make use of the elasticity of the material of the outer fitting portion to connect the ring portion to the outer periphery of the yoke. Since it can be pressed against the surface, the holdability of the non-slip plate with respect to the yoke can be improved.

[0012]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the door stopper 1 includes a magnet unit 5 in which a permanent magnet 4 is housed and fixed in a shallow dish-shaped yoke 3 having the suction surface 2 side opened, and a magnet unit. A leg member 6 rotatably attached to the magnet unit 5; a non-slip plate 7 attached to cover the attraction surface 2 of the magnet unit 5; A non-slip plate 7 having an outer fitting portion 11 extending from the outer peripheral portion of the flat plate portion 8 along the peripheral wall portion 9 of the yoke 3 to the bottom wall portion 10 side of the yoke 3.

To explain the magnet unit 5, the yoke 3 is made of a magnetic metal material such as an iron-based metal, has a substantially cylindrical peripheral wall 9 and a substantially disk-shaped bottom wall 10, and has a substantially circular shape. It is formed in the shape of a shallow bottom dish. A permanent magnet 4 is provided in the yoke 3. The permanent magnet 4 is formed in a donut shape having a through hole 12 in the center, and a slight gap 13 is provided between the peripheral wall 9 and the outer peripheral of the yoke 3. The yoke 3 is mounted inside and fixed to the yoke 3 with an adhesive. The attraction surface 14 of the permanent magnet 4 is provided substantially flush with the attraction surface 15 of the yoke 3 or at a position slightly lower than the attraction surface 15 of the yoke 3, that is, on the inner side of the yoke 3. A bracket member 16 that is bent in a substantially U-shape is fixed to the outer surface side of the bottom wall portion 10 of the yoke 3 with a fixture 17 such as a rivet, and a pair of bracket portions extending outwardly is attached to the bracket member 16. The magnet unit 5 is detachably attached to the door D with the suction surface 2 side facing the door D side.

The leg member 6 is formed of a hollow pipe-shaped member, and its upper end portion is located between the lower portion of the bracket portion 18 through a pin member 20 and is shown in a solid line in FIG. It is supported rotatably over the retreat position. The door D is held at a desired angle by engaging the lower end portion of the leg member 6 with the floor surface. At this time, the lower end portion of the leg member 6 near the lower end is so secured that the leg member 6 can securely catch the floor surface. Is bent by about 20 °, and a rubber cap 21 is fitted on the lower end of the leg member 6.

A holding means 22 for holding the leg member 6 at the retracted position is provided between the leg member 6 and the bracket member 16. The holding means 22 will be described. An engaging projection 23 projecting in the same direction as the pin member 20 is elastically urged toward the projecting side and is provided on the side of the bracket 18 so as to be able to protrude and retract. A possible engaging recess 24 is formed, and the leg member 6 is configured to be operable to a vertically retracted position shown by a virtual line in FIG. 1 by engaging the engaging projection 23 with the engaging recess 24. Have been. However, it is also possible to adopt a structure other than the illustrated one as the holding means 22. For example, a projection is formed near the center of rotation of the leg member 6, and the projection is formed on the bracket member 16 side. A leaf spring having a possible concave portion may be provided, and the projection may be held in the concave portion by the urging force of the leaf spring to hold the leg member 6 at the retracted position.

Next, the configuration of the anti-slip plate 7 which is a feature of the present invention will be described with reference to FIGS. The anti-slip plate 7 is basically for preventing slippage between the door D and the magnet unit 5 and is made of a synthetic rubber material or a synthetic resin material having a high friction coefficient with the door D. 5 and a ring-shaped outer fitting extending from the outer peripheral portion of the flat plate portion 8 to the bottom wall portion 10 side of the yoke 3 along the outer surface of the peripheral wall portion 9 of the yoke 3. The outer fitting portion 11 is fixed to the magnet unit 5 with an adhesive in a state where the outer fitting portion 11 is fitted to the magnet unit 5. As a result, the suction surface 15 of the yoke 3 is covered near the boundary between the flat plate portion 8 and the outer fitting portion 11, and the suction surface 15 of the yoke 3 does not directly contact the surface of the door D. As a result, it is possible to prevent the corner of the yoke 3 from directly contacting the door D and damaging the surface of the door D. Further, by fitting the outer fitting portion 11 to the yoke 3, the anti-slip plate 7 is peeled off from the magnet unit 5 in the in-plane direction of the flat plate portion 8 between the magnet unit 5 and the anti-slip plate 7. The force in the direction in which the anti-slip plate 7 is attached can be received by the outer fitting portion 11, and the mounting strength of the anti-slip plate 7 to the magnet unit 5 is sufficiently ensured.

A substantially circular fitting projection 25 having a size suitable for the through hole 12 of the permanent magnet 4 is integrally formed at the center of the flat plate portion 8, and the anti-slip plate 7 is assembled to the magnet unit 5. In this state, the fitting protrusion 25 is fitted into the through hole 12 of the permanent magnet 4, thereby further increasing the mounting strength in the direction in which the anti-slip plate 7 is to be separated from the magnet unit 5. An air vent hole 27 is formed in the center of the fitting projection 25 to prevent the internal pressure in the through hole 12 from fluctuating due to a change in the outside air temperature and the like, thereby preventing the anti-slip plate 7 from peeling off. It is configured to:

The thickness of the flat plate portion 8 other than the fitting projection 25 is, for example, about 0.3 to 0.8 mm, and is sufficient for the door D even when the flat plate portion 8 is sandwiched. It is configured so that magnetic attraction works.

A ring portion 26 protruding inward is integrally formed at the free end of the outer fitting portion 11, and the ring portion 26 is attached to the yoke 3 by an elastic force at an intermediate portion in the width direction of the outer fitting portion 11. The rigidity of the non-slip plate 7 with respect to the magnet unit 5 is further enhanced by being pressed against the peripheral wall portion 9 of the motor.

In the above embodiment, the case where the door stopper 1 is applied to the door D made of a magnetic material has been described. However, when the door stopper 1 is applied to the door D made of a non-magnetic material such as an aluminum alloy or wood, An auxiliary fixing plate 30 made of a magnetic material such as an iron-based metal as shown in FIGS. 5 to 7 is fixed to the door D in advance by using a fastening material 32 such as a double-sided tape. The magnet unit 5 of the door stopper 1 is sucked and held against 30. In this case, a plurality of restricting projections 31 are provided in the vicinity of the outer periphery of the auxiliary fixing plate 30 so as to surround the magnet unit 5 at intervals in the circumferential direction. The sliding of the magnet unit 5 with respect to may be restricted.

In this embodiment, the yoke 3 and the permanent magnet 4 are formed in a substantially circular shape. However, a rectangular yoke 3A is used as in the door stopper 1A shown in FIG. A plurality of permanent magnets (not shown) are provided at intervals, and a substantially rectangular flat plate portion 8A and a substantially rectangular frame-shaped outer fitting portion 11A are provided as anti-slip plates 7A. A non-slip plate 7A in which a fitting projection 25A projecting therebetween is formed integrally with the flat plate portion 8A may be used. The other components are basically the same as those of the above-described embodiment, and the same members are denoted by the same reference numerals and detailed description thereof will be omitted.

[0022]

[Effect of the invention]

 According to the door stopper according to the present invention, since the magnet unit is attracted and held to the door via the non-slip plate, the slip of the magnet unit relative to the door is prevented by the non-slip plate. In addition, the corners of the yoke are covered with the flat plate portion and the outer fitting portion, and the outer fitting portion receives a force in the in-plane direction of the flat plate portion between the magnet unit and the anti-slip plate. Since the peeling is effectively prevented, it is possible to prevent a problem that the corner of the yoke directly hits the door surface and damages the door surface. In addition, since the corners of the yoke are covered with the flat plate portion and the outer fitting portion, even when the door stopper is dropped when the door stopper is attached to or detached from the door, the corner of the yoke remains on the door or floor. Door and floor can be prevented from being damaged.

Here, when an auxiliary fixing plate made of a magnetic material is fixed to the mounting position of the magnet unit with respect to the door, and the magnet unit is attracted and held to the door via the auxiliary fixing plate, the case of aluminum alloy or wood is obtained. Even this door stopper can be applied.

If a regulating projection for regulating the slippage of the magnet unit with respect to the auxiliary fixing plate is formed in the vicinity of the outer periphery of the auxiliary fixing plate so as to surround the magnet unit, the sliding of the magnet unit with respect to the auxiliary fixing plate is regulated. The door stopper can be fixed more stably.

[0025] When the fitting projection for engaging and recessing the magnet unit is integrally formed on the anti-slip plate, the fitting projection of the anti-slip plate engages with the permanent magnet or yoke of the magnet unit, The mounting strength of the anti-slip plate to the magnet unit can be improved.

When a ring portion is formed at the free end of the outer fitting portion of the anti-slip plate so as to project inward and press against the outer peripheral surface of the yoke, a gap is formed between the free end of the outer fitting portion and the yoke. This can be reliably prevented, and the ring portion can be pressed against the outer peripheral surface of the yoke by utilizing the elasticity of the material of the outer fitting portion, so that the holdability of the anti-slip plate with respect to the yoke can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a door stopper and a door near the door stopper.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is a perspective view of a non-slip plate.

FIG. 5 is a perspective view of an auxiliary fixing plate.

FIG. 6 is a diagram corresponding to FIG. 2 of a door stopper when an auxiliary fixing plate is used.

FIG. 7 is a diagram corresponding to FIG. 3 of a door stopper when an auxiliary fixing plate is used.

FIG. 8 is an exploded perspective view of a door stopper and a non-slip plate having a rectangular yoke.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door stopper 2 Suction surface 3 Yoke 4 Permanent magnet 5 Magnet unit 6 Leg member 7 Non-slip plate 8 Flat plate portion 9 Peripheral wall portion 10 Bottom wall portion 11 External fitting portion 12 Through hole 13 Gap 14 Suction surface 15 Suction surface 16 Bracket member 17 Fixing tool 18 Bracket section 20 Pin member 21 Rubber cap 22 Retaining means 23 Engagement projection 24 Engagement concave section 25 Fitting projection 26 Ring part 27 Air vent hole 30 Auxiliary fixing plate 31 Regulatory projection 32 Fastener 1A Door stopper 3A Yoke 7A Prevention plate 8A Flat plate part 11A External fitting part 25A Fitting protrusion D Door

Claims (5)

[Utility model registration claims] 1. A magnet unit having a permanent magnet accommodated and fixed in a shallow dish-shaped yoke having an adsorbing surface opened, a leg member rotatably attached to the magnet unit, and the magnet unit. A non-slip plate attached so as to cover the attraction surface side of the magnet unit, and a flat plate portion covering the attraction surface side of the magnet unit, extending along the outer surface of the yoke from an outer peripheral portion of the flat plate portion, and externally fitted to the yoke. A non-slip plate having an outer fitting portion, and a door stopper. 2. The door stopper according to claim 1, wherein an auxiliary fixing plate made of a magnetic material is fixed at a position where the magnet unit is attached to the door, and the magnet unit is sucked and held on the door via the auxiliary fixing plate. 3. The door stopper according to claim 1, wherein a regulating projection for regulating the sliding of the magnet unit relative to the auxiliary fixing plate is formed in the vicinity of the outer periphery of the auxiliary fixing plate so as to surround the magnet unit. 4. The door stopper according to claim 1, wherein a fitting projection for fitting into and recessing the magnet unit is formed integrally with the anti-slip plate. 5. The door stopper according to claim 1, wherein a ring portion protruding inward from the free end of the outer fitting portion of the anti-slip plate and pressed against the outer peripheral surface of the yoke is formed.