JP2010001674A - Braking device for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a braking device capable of surely absorbing impact when the moving speed of a sliding door is higher than a predetermined speed in opening/closing the sliding door. <P>SOLUTION: The braking device for the sliding door is provided with a rotating member 2 mounted near the sliding door 1, in front of a closing position and supported almost in parallel with the sliding door 1 and rotatably around an axis substantially perpendicular to the moving direction of the sliding door 1; a collision member 3 mounted to one of the side faces of the rotating member 2 and rotating the rotating member 2 when colliding with the end of the sliding door 1 moving in the closing direction; a torsion coil spring 5a energizing the collision member 3 in a direction close to the sliding door 1; and a friction means 4a contacting the sliding door 1 to brake the sliding door 1 when the end of the sliding door 1 moving in a closing direction collides with the collision member 3 to move the collision member 3 in a separating direction from the sliding door 1 to thereby rotate the rotating member 2 by a predetermined angle or more. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a braking device attached to a slide door, and in particular, the brake mechanism functions only when the moving speed of the slide door is equal to or higher than a predetermined speed, and the sliding mechanism does not function when the predetermined speed is not reached. The present invention relates to a braking device.

  Conventionally, when the sliding door is closed, a braking mechanism is provided in order to prevent the sliding door from colliding strongly with the door end, generating an impact sound, and repelling the sliding door. For example, Patent Literatures 1 to 6 disclose literatures that disclose braking mechanisms provided in sliding doors.

  In Patent Document 1, when a braking body is suspended from a sliding door so as to be pivotable via a shaft, and the sliding door approaches a closed position or an open position and the braking body hits a guiding means provided on a rail, the braking body is A technique is disclosed that is guided and rotated on the shaft in a direction opposite to the traveling direction of the door roller, and slidably contacts at least one of the rail and the door wheel.

  In Patent Document 2, a brake member is installed in a sliding door, and a plate cam having a curved surface that is rotated by contact friction with the brake member is installed in an orthogonal direction with respect to the brake member. A technique is disclosed in which a member contacts a curved surface of a plate cam to press a brake member while the plate cam rotates to brake a sliding door.

  Patent Document 3 discloses a brake having a structure in which the brake is released when the sliding door is moved in the opening direction without using an elastic force, and the braking mechanism is exhibited when the sliding door is moved in the closing direction and reaches a predetermined position. The technology is disclosed.

  In Patent Document 4, a rail formed in a U-shape, a runner body that has wheels that roll in the rail and is attached to a sliding door and travels in the rail, and protrudes so as not to contact the runner body A brake applying member disposed in the rail from a position before the closing position of the sliding door to the closing position, and an operating piece which is bent by a spring member and is rotatably provided on the runner body so as to contact and displace the braking applying member. A technique for applying a braking force by pressing a rail or a wheel by displacement is disclosed.

  Patent Document 5 discloses a technology of a brake device attached to a sliding door that has a structure in which braking force is generated by pressing a brake shoe against an inner surface of a brake roller and dirt is not easily attached to the braking surface of the brake. It is disclosed.

  In Patent Document 6, a braking force is applied to the door that automatically moves back toward the fully closed position by the action of the winder, and the door is prevented from impactingly contacting the door contact surface of the doorway. Techniques to do this are disclosed.

  In a machine tool, as shown in FIG. 7, the machining area is generally covered with a fixed sheet metal cover, and the fixed sheet metal cover is used for the purpose of work replacement work, machining setup work, machine maintenance and inspection work, etc. A sliding door 1 is provided on the front and side of the door.

  In the vicinity of the slide door 1 provided on the front surface and the side surface of the fixed sheet metal cover, there are various control devices such as a control device for controlling and operating the machine tool 10, a display device 11 of the control device and an operation panel 12. Peripheral devices (“control device, monitor and operation panel of the control device, and various peripheral devices” are generally referred to as “peripheral devices” hereinafter) are often arranged.

  When the sliding door 1 is opened and closed, the sliding door 1 collides with the fixed sheet metal cover at the open end or the closed end of the sliding door 1, so that an impact is generated. Therefore, in order to alleviate the impact applied to the peripheral devices when the sliding door 1 is opened and closed, a cushion rubber 14 is attached to the end of the sliding door 1 as shown in FIGS. Measures such as setting up are taken.

Japanese Patent Laid-Open No. 2005-90097 JP 2003-314138 A JP 2002-188354 A Japanese Patent Laid-Open No. 9-72154 JP-A-8-165840 Japanese Utility Model Publication No.59-40468

  The strength of the impact applied to the peripheral devices when opening and closing the sliding door varies depending on the working state when the operator operating the machine tool closes the sliding door. If the sliding door is handled messy and the sliding door speed is high when closing and a strong impact is applied, the well-known impact mitigation technology described in Background Art cannot absorb the impact of the collision and damages peripheral devices. There is a case.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a braking device that can reliably absorb an impact when the moving speed of the sliding door is equal to or higher than a predetermined speed when the sliding door is closed.

  The invention according to claim 1 of the present application is a sliding door braking device for buffering an impact when the sliding door is closed, and is installed in the vicinity of the sliding door and in front of the closing position of the sliding door. A rotating member that is substantially parallel to the sliding door and is rotatably supported about an axis substantially perpendicular to the moving direction of the sliding door, and a member attached to one of the side surfaces of the rotating member The sliding door moves in the closing direction and collides with an end portion of the sliding door, and the collision member rotates the rotating member around the axis, and the collision member is attached in the direction approaching the sliding door. Urging means for energizing, and a method in which the sliding member moves away from the sliding door when the sliding door moves in the closing direction and the end of the sliding door collides with the collision member Go to, when the rotating member is rotated a predetermined angle or more, a braking device for sliding doors, characterized by comprising a friction means for braking the sliding door in contact with the sliding door.

  According to a second aspect of the present invention, the friction means is the other surface of the one surface to which the collision member of the side surface of the rotating member is attached, and the friction member is provided so as to contact at least the slide door The sliding door braking device according to claim 1, wherein:

  According to a third aspect of the present invention, the friction means is one surface and the other surface of the side surface of the rotating member to which the collision member is attached, and the friction member is provided so as to be in contact with at least the sliding door. The sliding door braking device according to claim 1, wherein:

  The invention according to claim 4 further includes a regulating member that is provided on a side of the slide door that faces the rotating member, and that regulates movement of the slide in a direction perpendicular to an opening / closing direction of the slide. The braking device for a sliding door according to any one of claims 1 to 3.

  According to the present invention, the faster the sliding door opens and closes, the more friction resistance is applied to the sliding door, so that the sliding door can be stopped or decelerated before reaching the open or closed end, When the door is opened and closed at a certain speed or less, the sliding door can be smoothly opened and closed without applying frictional resistance to the sliding door.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a first embodiment of the present invention. A rotating member 2 having a rotation center is disposed in the vicinity of a path through which the sliding door 1 opens and closes. The rotating member 2 has a part 2a and a part 2b. The rotating member 2 includes a collision member 3 and a friction member 4a. The collision member 3 is attached to the part 2 b of the rotating member 2, and the friction member 4 a is attached to the part 2 a of the rotating member 2. The collision member 3 is a member for causing the sliding door 1 to collide with the sliding door 1 on a path through which the sliding door 1 opens and closes. The friction member 4 a is a member that comes into contact with the slide door 1 when the collision member 3 collides with the slide door 1 and the rotation member 2 rotates by a reaction force that the collision member 3 receives from the slide door 1. The friction member 4a of the first embodiment has the rotating member 2 inside, and the rotating shaft of the rotating member 2 penetrates the inside of the friction member 4a. As the material of the collision member 3, resin, rubber, or the like that does not damage the slide door 1 when it collides with the slide door 1 is used. The friction member 4a is made of a material that generates a frictional force without damaging the sliding door 1 when it contacts the sliding door 1 like the collision member 3, such as rubber. Select the material.

  The contact of the friction member 4a with the slide door 1 will be described. The friction member 4a comes into contact with the slide door 1 when the rotating member 2 rotates more than a predetermined rotation angle. The rotation angle of the rotation member 2 is proportional to the momentum received from the slide door 1 when the collision member 3 collides with the slide door 1. That is, whether the friction member 4a contacts the sliding door 1 or not depends on the moving speed of the sliding door 1.

  The rotating member 2 is biased in a direction such that the collision member 3 is positioned on a path through which the sliding door 1 passes when opening and closing. This rotational force is generated by the torsion coil spring 5a in the first embodiment shown in FIG. The torsion coil spring 5a is wound around the rotating member 2, and one end thereof is locked by a member located outside the rotating member 2 so that the aforementioned rotational force is generated, and the other end is placed on the rotating member 2. It is locked by the arranged member.

  When the sliding door 1 collides with the collision member 3, the collision member 3 is bounced back by the impact force of the collision. As described above, the rotating member 2 is biased with a rotational force in a direction opposite to that repelled when the slide door 1 collides. Therefore, if the impact force when the slide door 1 collides with the collision member 3 is small, the amount that the collision member 3 bounces due to the collision (in other words, the rotation angle of the rotation member 2) is small. On the other hand, if the impact force when the slide door 1 collides with the collision member 3 is large, the amount that the collision member 3 rebounds due to the collision increases. The impact force is determined by the speed at which the slide door 1 collides with the collision member 3.

  The friction member 4a contacts the side surface of the sliding door 1 when the rotating member 2 rotates more than a predetermined angle. Therefore, when the impact force is small (that is, the rotation angle of the rotating member 2 is small), the friction member 4 a does not contact the slide door 1. When the friction member 4a has a large impact force (that is, the rotation angle of the rotary member 2 is large) and contacts the slide door 1, a friction force corresponding to the impact force is generated. How much impact force the collision member 3 receives can be adjusted by the spring constant of the torsion coil spring 5a that applies the biasing force.

  The magnitude of the impact force received by the collision member 3 is proportional to the moving speed of the slide door 1. Then, the magnitude of the frictional force generated when the friction member 4 a contacts the slide door 1 is determined according to the moving speed of the slide door 1. When the impact force is weak (that is, the moving speed of the slide door 1 is slow), the contact force between the friction member 4a and the slide door 1 is weak, and the generated friction force is also small. On the other hand, when the impact force is strong (that is, the moving speed of the slide door 1 is fast), the contact force between the friction member 4a and the slide door 1 is strong, and the generated friction force is also large.

  The guide 6 is a member that restricts the sliding door 1 from moving by the force received in the lateral direction when the friction member 4 a contacts the sliding door 1. The rotation stopper 7 is a member that prevents the rotating member 2 from rotating excessively. When used as a braking device for the slide door 1 that moves in the horizontal direction, the rotation stopper 7 may not be provided.

  FIG. 2 is a view in which the braking device according to the first embodiment of the present invention is attached to the cover 9 of the machine tool and viewed from the moving direction of the slide door 1. The braking device of the first embodiment described above is attached to the inner wall surface of the cover 9 of the machine tool by the holding member 8. The sliding door 1 is restricted from moving in the horizontal direction by a guide 6 sliding on a guide frame provided on the inner wall surface of the cover 9. Since the sliding door 1 is thus restricted from moving in the lateral direction, a frictional force can be generated when the friction member 4 a of the braking device contacts the side wall surface of the sliding door 1.

  Further, in order to arrange the collision member 3 on one side surface of the rotating member 2, the rotating member 2 has a portion 2 b extending from the rotating member 2. In this way, the rotating member 2 and the part 2b can be rotated together. The rotating shaft of the rotating member 2 and the central axis of the part 2b are configured in parallel. And the collision member 3 is attached to this site | part 2b. The collision member 3 may be rotatable about the part 2b as a rotation axis, or may not be rotated. If it attaches so that rotation is possible, the contact location where the collision member 3 contacts the edge part of the slide door 1 will not be limited to the same location.

  In addition, when employ | adopting the structure which does not rotate the collision member 3, since the site | part 2b should just be a member which fixes the collision member 3, it is not necessary to have an axis | shaft parallel to the rotating shaft of the rotating member 2. FIG. Further, as shown in FIG. 2, in the embodiment of the biasing means by the torsion coil spring 5a, the rotation stopper 7 may not be provided.

Next, the operation of the braking apparatus according to the first embodiment of the present invention will be described using FIG. FIG. 3A shows the configuration as described in FIG.
FIG. 3B shows a case where the moving speed of the slide door 1 is slow. When the speed of the slide door 1 is low, the impact force applied to the collision member 3 is small, the rebound is small, and the rotation angle of the rotary member 2 is also small. Therefore, even if the friction member 4a attached to the rotating member 2 contacts the slide door 1, the contact is weak and the frictional force is small. Or the sliding door 1 and the friction member 4a do not contact.

  FIG. 3C shows a case where the moving speed of the slide door 1 is fast. When the speed of the slide door 1 is high, the impact force applied to the collision member 3 is large and the rebound is large, and the rotation angle of the rotary member 2 is also large. Therefore, the friction member 4a attached to the rotating member 2 is in strong contact with the slide door 1 and has a large frictional force. Since a large frictional force is generated, the braking force to the slide door 1 is also large.

  In addition, when the moving speed of the slide door 1 has no contact as shown in FIG. 3B, the collision member 3 is less rebounded and the friction member 4 a does not contact the slide door 1. In this case, the braking force acting on the slide door 1 is not generated by the friction member 4a, and the collision member 3 slides on the side surface of the slide door 1 when the slide door 1 moves after the collision member 3 collides. Only the frictional force generated when For this reason, an excessive braking force is not generated, and the operator does not need to apply a large closing force to the slide door 1 when closing the slide door 1. Also in the cases of FIGS. 3B and 3C, due to the biasing force generated by the torsion coil spring 5a, the rotating member 2 rotates in the reverse direction to the rotating direction at the time of collision, and the friction member 4a is replaced with the sliding door 1. Separate from the side. Then, the braking force applied to the slide door 1 is only the friction force generated when the collision member 3 slides on the side surface of the slide door 1.

  FIG. 4 is a diagram for explaining the operation of the braking apparatus according to the second embodiment of the present invention. The difference from the first embodiment of the present invention shown in FIGS. 1, 2, and 3 is the configuration of the friction member 4 b and the attachment location to the rotating member 2. In the second embodiment, the rotating shaft of the rotating member 2 is located outside the friction member 4b. Further, the friction member 4 b is disposed on the side surface of the rotating member 2 that faces the slide door 1. Since the friction member 4b can be configured in a flat plate shape, it is easier to replace parts when the friction member 4b is worn compared to the first embodiment. In the first embodiment, when the friction member 4a is disposed outside the rotation shaft of the rotating member 2, the second embodiment is obtained.

  4B and 4C illustrate when the moving speed of the slide door 1 is slow and when it is fast, as in the description of FIG. As shown in FIG. 4B, when the moving speed of the sliding door 1 is slow, the contact between the friction member 4b and the side surface of the sliding door 1 is weak, and therefore the frictional force generated by the contact is small. Or the sliding door 1 and the friction member 4b do not contact. On the other hand, as shown in FIG. 4C, when the moving speed of the slide door 1 is high, the contact force between the friction member 4b and the side surface of the slide door 1 becomes strong, and therefore the friction force generated by the contact is large. Thus, a strong braking force is applied to the sliding door 1.

  The third embodiment of the present invention shown in FIG. 5 is an embodiment that uses an urging force by gravity instead of the urging force by the torsion coil spring 5a of the first embodiment. It can be used when the slide door 1 moves vertically. The weight 5b and the collision member 3 are attached to a member extending from the rotating member 2. The weight 5b is subjected to the action of gravity, and the rotating member 2 is given a rotational force in the counterclockwise direction when viewed from the upper side of the drawing. On the other hand, the collision member 3 is given a rotational force in the clockwise direction when viewed from the upper side of the drawing by the action of gravity. When the sliding door 1 descends in the vertical downward direction which is the closing direction, the counterclockwise rotational force by the weight 5b is won or balanced in order to cause the collision member 3 to collide with the end surface of the sliding door 1. Put it in a state. In the third embodiment using the weight 5b, it is desirable to provide the rotation stop 7. In the operation of opening the sliding door 1, the weight 5 b and the collision member 3 are suddenly rotated counterclockwise to generate an impact on the braking device, or when the sliding door 1 is in the open state, The weight 5b and the collision member 3 are in a pendulum state and are not stable. Therefore, in order to prevent such undesired rotation of the rotating member 2, it is desirable to provide a rotation stop 7.

  FIG. 5B shows a case where the moving speed of the slide door 1 in the vertically downward direction is slow, and FIG. 5C shows a case where the moving speed of the slide door 1 in the vertically downward direction is fast. The generation of the braking force in the third embodiment in each case is the same as described in FIG.

  The fourth embodiment of the present invention shown in FIG. 6 is an embodiment that uses an urging force by gravity instead of the urging force by the torsion coil spring 5a of the second embodiment. The function and action of the weight 5b are the same as those in the third embodiment shown in FIG.

  In the first to fourth embodiments of the present invention described above, the rotation stop of the rotating member 2 has been described as an axis parallel to the slide door 1 and perpendicular to the moving direction of the slide door 1. 1 need not be perpendicular to the direction of movement of the sliding door 1.

  As long as the collision member 3 attached to the rotary member 2 collides with the slide door 1 and the rotary member 2 rotates by a predetermined angle, the friction members 4a and 4b and the slide door 1 need to come into contact with each other. The rotation axis of the member 2 may be inclined at a predetermined angle with respect to the sliding door 1 and the moving direction of the sliding door 1.

  In the first embodiment and the second embodiment, the torsion coil spring 5a is used as the means for generating the urging force. However, the present invention is not limited to this. For example, the collision member 3 is made of a leaf spring. It is also possible to bias the sliding door 1 and the collision position.

1 is a first embodiment of the present invention. It is the figure which attached the 1st Embodiment of this invention to the cover of a machine tool, and was seen from the advancing direction of the slide door. It is a figure explaining operation | movement of the braking device which is the 1st Embodiment of this invention. It is a figure explaining operation | movement of the braking device which is the 2nd Embodiment of this invention. It is the 3rd Embodiment of this invention. It is the 4th Embodiment of this invention. It is a figure explaining the shock absorption mechanism of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slide door 2 Rotating member 3 Colliding member 4a, 4b Friction member 5a Torsion coil spring 5b Weight 6 Guide 7 Rotation stop 8 Holding member 9 Cover 10 Machine tool 11 Display apparatus 12 Operation panel 13 Mounting member 14 Cushion rubber 15 Damper

Claims (4)

A sliding door braking device for buffering an impact when closing the sliding door,
It is mounted near the sliding door and before the closing position of the sliding door, is substantially parallel to the sliding door, and is rotatable about an axis substantially perpendicular to the moving direction of the sliding door. A supported rotating member;
A member attached to one of the side surfaces of the rotating member, and a collision member that rotates the rotating member around the axis when the sliding door moves in a closing direction and collides with an end of the sliding door;
Biasing means for biasing the collision member in a direction approaching the slide door;
When the sliding door moves in the closing direction and the end of the sliding door collides with the collision member, the collision member moves in a direction away from the sliding door, and the rotation member is rotated by a predetermined angle or more. Friction means for contacting the sliding door and braking the sliding door;
A sliding door braking device comprising:   The friction means is a friction member provided on the other surface of the one surface on which the collision member is attached on the side surface of the rotating member, and is provided so as to be in contact with at least the slide door. Item 4. The sliding door braking device according to item 1.   The friction means is a friction member provided on one side and the other side of the side surface of the rotating member to which the collision member is attached, and is provided so as to be in contact with at least the sliding door. Item 4. The sliding door braking device according to item 1.   4. The apparatus according to claim 1, further comprising a regulating member provided on a side of the sliding door facing the rotating member and regulating movement of the slide in a direction perpendicular to an opening / closing direction of the slide. The braking device of the sliding door as described in any one.

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