JP6594828B2 - Braking device, automatic moving device and joinery - Google Patents

Description

  The present invention relates to a braking device that brakes movement of a door or the like, an automatic moving device, and a fitting.

2. Description of the Related Art Conventionally, as a door braking device, a door braking device has been proposed that includes a main body of a braking device, a hollow shaft that is rotatably passed through the main body, and a spiral rod that passes through the hollow shaft (see Patent Document 1). ). Braking fluid is stored in the space between the main body and the hollow shaft. The hollow shaft is screw-engaged with the spiral rod so that the spiral rod can rotate by relatively moving in the axial direction. The main body is fixed to an opening frame in which the door is slidably arranged in the left-right direction. The spiral rod is fixed to a door pulley bracket located on the door bottom side of the main body.
In this door braking device, when the door is closed, the spiral rod moves in the axial direction relative to the hollow shaft, and this movement causes the hollow shaft to rotate with respect to the main body. Is generated to brake the closing movement of the door.

Japanese Patent No. 4510608

By the way, in the door braking device described in Patent Document 1, the spiral rod is fixed to the door pulley bracket of the door located on the door bottom side with respect to the main body of the braking device. There is a possibility that a compressive force is applied to the spiral rod to cause buckling or the like.
Further, in the door braking device described in Patent Document 1, the hollow shaft continues to rotate during the closing movement of the door, and therefore the braking is not required, such as when the movement of the door is low speed and does not strongly collide with the opening frame. In addition, braking will continue, which may make it difficult to move the door.

  An object of the present invention is to provide a braking device, an automatic moving device, and a fitting capable of braking according to the moving speed of a door or the like without applying a compressive force to the spiral rod.

  The braking device of the present invention includes a first rotator, a second rotator that is engaged with the first rotator so as to transmit rotation, and the first rotator attached to the second rotator in a separation direction. An urging member for urging, a spiral rod inserted through the first rotator and the second rotator, a resistor for generating a resistance force against the rotation of the second rotator, and a member attached to the spiral rod. The second rotating body is disposed between the first rotating body and the engaging body in the axial direction of the spiral rod, and the spiral rod is in the axial direction of the first rotating body. The first rotating body is arranged to be movable in a first direction approaching the second rotating body and a second direction separating the first rotating body from the second rotating body, and the first rotating body is arranged in the axial direction of the spiral rod. And the engagement body is the first The spiral rod is threadably engaged with the spiral rod by rotation in a first direction away from the rotating body, and the first rotating body is moved by the biasing force of the biasing member according to the moving speed in the first direction. A non-engaged state separated from the second rotating body and an engaged state engaged with the second rotating body so as to transmit rotation can be switched against an urging force of the urging member.

According to the braking device of the present invention, since the second rotating body is disposed between the first rotating body and the engaging body, a moving force in the first direction is applied to the engaging body from the engaged body that engages with the engaging body. When this is done, the engagement body pulls the spiral rod in a direction away from the second rotation body, so that the spiral rod moves in the first direction and the first rotation body approaches and engages with the second rotation body. Can be in a state. In this engaged state, rotation is transmitted from the first rotating body to the second rotating body, and resistance force is generated by rotation of the second rotating body relative to the resistor, but the spiral rod moving in the first direction is compressed and buckled. There is no risk of this.
Further, when a moving force in the second direction is applied from the engaged body to the engaging body, the engaging body is pushed in a direction approaching the second rotating body. In this case, the first rotating body is Since it can be separated from the second rotating body and brought into the disengaged state, an excessive load is not applied when the spiral rod moves in the second direction, and the risk of buckling or the like occurring in the spiral rod can be suppressed.
Further, according to the braking device of the present invention, for example, when the braking device is attached to the frame and the engaged body to be engaged with the engaging member of the braking device is attached to the closing surface material, the closing surface material such as a door is provided. In a stationary state, the first rotator is urged in the separation direction by the urging member and is brought into a non-engaged state separated from the second rotator. When the closed surface material moves, the engaged body engages with the engaging body, and when the spiral rod moves in the first direction, the first rotating body rotates by moving the spiral rod in the first direction at a predetermined speed or higher. While approaching the second rotating body against the biasing force of the biasing member. Even when approaching in this way, in a state where the approaching force of the first rotating body to the second rotating body is less than the biasing force of the biasing member, the first rotating body is not engaged with the second rotating body. Therefore, the rotation is not transmitted from the first rotating body to the second rotating body, and the resistance force of the resistor against the rotation of the second rotating body is not generated. Thereby, the closing face material can be smoothly moved without applying the resistance of the resistor to the closing face material.
As the speed of movement of the spiral rod in the first direction increases, the frictional force between the spiral rod and the first rotating body increases, and the moving force in the first direction of the first rotating body approaching the second rotating body ( (Approaching force) exceeds the urging force of the urging member, and when the first rotating body approaches the second rotating body and becomes engaged, the rotation of the first rotating body is transmitted to the second rotating body. Thereby, the second rotating body rotates to generate a resistance force on the resistor, and the resistance force of the resistor is applied to the closing face material, so that the movement of the closing face material can be braked.
The above-described operation and effect can be similarly achieved even when, for example, the braking device is attached to the closing surface member and the engaged body to be engaged with the engaging body of the braking device is attached to the frame.
In the present invention, the closing face material includes a door, a door, a shoji, a shutter, a partition, a gate, and the like.

In the braking device of the present invention, it is preferable that engagement teeth that engage with each other are formed on the first rotating body and the second rotating body.
According to such a structure, since it engages and engages with the above-mentioned engaging tooth, the amount of rotation until the first rotating body engages with the second rotating body depends on the arrangement angle of the engaging tooth described above. Can be set. Therefore, for example, the amount of rotation until the first rotating body is engaged with the second rotating body can be reduced by increasing the number of engaging teeth and reducing the arrangement angle.
Further, for example, by reducing the number of engaging teeth, the engaging teeth can be formed larger and the strength can be improved.

In the braking device of the present invention, it is preferable that the spiral rod has a different screw pitch along the axial direction.
According to such a configuration, the moving force applied to the first rotating body by the axial movement of the spiral rod can be adjusted by the above-described screw pitch.

In the braking device of the present invention, one end side of the spiral rod is formed to have a larger thread pitch than the other end side, and the first rotating body moves in the axial direction of the spiral rod by moving in the axial direction of the spiral rod. Therefore, it is preferable that the spiral rod is relatively moved from one end side to the other end side.
According to such a configuration, it is less necessary to brake the movement of the closing face material at the start of movement when the closing face material is not accelerated so much, but the screw pitch of the first rotating body is smaller than that of the other end side of the spiral rod. Since the screw is engaged with one end of the large screw, the moving force applied to the first rotating member due to the axial movement of the spiral rod is smaller than when the first rotating member is screwed to the other end of the spiral rod. Can be small. For this reason, the closing face material can be smoothly moved from the start of movement of the closing face material to before the end of movement.

  An automatic movement device according to the present invention includes the above-described braking device according to the present invention, and an application device that is connected to a spiral rod of the braking device and applies an axial moving force to the spiral rod. .

According to the automatic movement device of the present invention, it is possible to configure an automatic movement device that can exhibit the same effects as the braking device of the present invention described above, and to relate to one of the opening side and the closing face material side of the building. The attachment device is attached in a state in which the engagement body is attached to the other of the opening side and the closing face material side of the building, and the engagement body is engaged with the engaged body by the movement operation of the closing face material. The closing face material can be automatically moved by applying an axial movement force to the spiral rod.
Furthermore, when the first rotating body is engaged with the second rotating body by moving the spiral rod in the axial direction, the movement of the closing face material can be braked in the same manner as the braking device of the present invention described above.

The joinery of the present invention includes a closing face material that can be disposed in an opening of a building and the braking device of the present invention described above, and the braking device is provided on one of the closing face material side and the opening side. The engagement body is attached, and the engaged body of the braking device is attached to the other of the closing face material side and the opening side.
According to the joinery of the present invention, the same function and effect as the brake device of the present invention described above can be exhibited.

The joinery of the present invention includes a closing face material that can be arranged in an opening of a building and the above-described automatic movement device of the present invention, and one of the closing face material side and the opening side is provided with the braking member. An engaging body of the braking device is attached, and an engaged body of the braking device is attached to the other of the closing face material side and the opening side.
According to the joinery of this invention, it can be comprised so that the effect similar to the automatic movement apparatus of this invention mentioned above can be exhibited.

  According to the present invention, it is possible to provide a braking device, an automatic moving device, and a joiner that can brake a door or the like without applying a compressive force to the spiral rod.

The external appearance figure which shows the fitting which concerns on embodiment of this invention. The perspective view which shows the braking device of the joinery which concerns on the said embodiment. The perspective view which shows the principal part of the braking device of the joinery which concerns on the said embodiment. Explanatory drawing which shows the engagement state of the braking device of the joinery which concerns on the said embodiment. Explanatory drawing which shows operation | movement of the fitting which concerns on the said embodiment. The perspective view which shows the automatic movement apparatus of the joinery which concerns on the modification of this invention.

[Configuration of this embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a sliding door 1 such as an entrance sliding door as a fitting according to the present embodiment is provided at an opening of a building and opens and closes an entrance that partitions an indoor space on one side and an outdoor space on the other side. The frame body 10 includes two door bodies 20A and 20B (closing face materials) that are slidable in the left-right direction in the frame body 10.

  The frame 10 is framed by an upper frame 11, a lower frame 12, and left and right vertical frames 13. The door 20A is assembled by an upper rod 21A, a lower rod 22A, left and right vertical rods 23A, and a panel 24A. The door body 20B is assembled by an upper rod 21B, a lower rod 22B, left and right vertical rods 23B, and a panel 24B.

A rail is formed on the upper frame 11 and the lower frame 12, and a groove forming portion that fits into the rail is formed on the upper rods 21A and 21B and the lower rods 22A and 22B, and the doors 20A and 20B. Are arranged in the frame 10 so as to be slidable along the rail.
A U-shaped frame 4 having a U-shaped cross section is fixed to the upper frame 11. The U-shaped frame 4 has a bottom piece 4A and two side pieces 4B as shown in FIG. 2, and is fixed at a position closer to the door tip side of the upper frame 11 as shown in FIG. ing.
A braking device 50 is installed in the groove formed by the bottom piece 4A and the two side pieces 4B of the U-shaped frame 4, and the pressing members 6 and 7 are installed on both ends in the longitudinal direction of the braking device 50. Has been. A strike 44 that engages with a catcher 43 described later of the braking device 50 is attached to the upper rod 21A.
For convenience of explanation, FIG. 2 (B) is shown by omitting one side piece 4B of the U-shaped frame 4 shown in FIG. 2 (A), and FIG. 2 (C) shows one side piece. In addition to the portion 4B, the guide member 41, the presser plate 58, and the case 59 are omitted.

  The braking device 50 is a damper that brakes the movement of the door 20A in the closing direction (leftward in FIG. 1). As shown in FIGS. 2 and 3, the first rotating body 54, the second rotating body 55, A coil spring 56 as an urging member, a spiral rod 57, a presser plate 58, a case 59 as a resistor, and a transmission device 40 that transmits a moving force in the axial direction X to the spiral rod 57 are provided.

The first rotating body 54 and the second rotating body 55 are disposed so as to abut each other in the axial direction X of the spiral rod 57, and the coil spring 56 is disposed at the abutting portion of the first rotating body 54 and the second rotating body 55. The case 59 is arranged around the second rotating body 55. The second rotating body 55 and the case 59 are disposed between the first rotating body 54 and the transmission device 40 in the axial direction X. As shown in FIGS. 2B and 2C, the first rotating body 54 is positioned on the right side with respect to the second rotating body 55 and the case 59, and the transmission device 40 is connected to the second rotating body 55 and the case 59. On the left side. As shown in FIG. 2A, the presser plate 58 presses the first rotating body 54 and the lower part of the case 59.
The spiral rod 57 is inserted through the first rotating body 54, the second rotating body 55, the coil spring 56 and the case 59. The screw pitch of the spiral rod 57 is equal.

The first rotator 54 is formed in a cylindrical shape, is screw-engaged with the spiral rod 57, and is an engagement formed at an end of the first rotator 54 (abutting portion with respect to the second rotator 55). It has a tooth 70 (see FIG. 4) and a spring receiving portion formed on the outer peripheral surface. The first rotating body 54 is rotatably supported by the receiving member 60 in the axial direction X of the spiral rod 57.
When the spiral rod 57 moves in the axial direction X with respect to the first rotating body 54, the first rotating body 54 rotates around the axial center of the spiral rod 57. When the moving speed of the spiral rod 57 moving in the axial direction X increases, the frictional force between the spiral rod 57 and the screw engaging portion (not shown) of the first rotating body 54 increases as the moving speed increases. The first rotating body 54 moves toward the second rotating body 55 against the elastic biasing force of the coil spring 56.

  As shown in FIG. 4, the engagement teeth 70 of the first rotator 54 protrude toward the second rotator 55 and are formed in a right triangle shape. A plurality of lines are arranged intermittently along the rotation direction. The plurality of engaging teeth 70 are arranged at an equal pitch. The engagement tooth 70 has a first meshing tooth surface 71 and a first non-meshing tooth surface 72. The first meshing tooth surface 71 is a flat surface that extends along the axial direction X of the spiral rod 57 and is orthogonal to the end surface of the first rotating body 54. The first non-meshing tooth surface 72 is inclined with respect to the axial direction X of the spiral rod 57 and the end surface of the first rotating body 54. The first tooth tip 73 where the first meshing tooth surface 71 and the first non-meshing tooth surface 72 intersect is formed in a pointed shape.

For example, when the outer diameter of the end face of the first rotating body 54 (end face on the butting side) is about 14 mm, the number of teeth of the engaging teeth 70 may be set to 3-12.
Here, when a large number of engagement teeth 70 are set, the interval between the engagement teeth 70 becomes small, and the first rotating body 54 required for the engagement teeth 70 to mesh with the engagement teeth 80 is obtained. The amount of rotation can be reduced. When the number of engagement teeth 70 is set to be small, the circumferential width of the engagement teeth 70 can be formed large, and the strength of the engagement teeth 70 can be improved.

  The second rotating body 55 is formed in a cylindrical shape, and the spiral rod 57 is inserted through the axial direction X without being screw-engaged, and the end of the second rotating body 55 (first rotating body). And engaging teeth 80 (see FIG. 4). The second rotating body 55 is disposed so as to be rotatable about the axis of the spiral rod 57 and is supported by the receiving member 52 in the axial direction X.

The engaging teeth 80 of the second rotator 55 protrude toward the first rotator 54 and are formed in a right triangle shape, and intermittently extend along the circumferential direction (rotation direction) on the end surface of the second rotator 55. Are lined up. The plurality of engaging teeth 80 are arranged at an equal pitch. As shown in FIG. 4, the engaging tooth 80 has a second meshing tooth surface 81 and a second non-meshing tooth surface 82. The second meshing tooth surface 81 is a flat surface that extends along the axial direction X of the spiral rod 57 and is orthogonal to the end surface of the second rotating body 55. The second non-meshing tooth surface 82 is inclined with respect to the axial direction X of the spiral rod 57 and the end surface of the second rotating body 55. The second tooth tip 83 where the second meshing tooth surface 81 and the second non-meshing tooth surface 82 intersect is formed in a pointed shape.
The tooth depth of the engaging teeth 80 of the second rotating body 55 is longer than the tooth depth of the engaging teeth 70 of the first rotating body 54. Further, the pitch of the plurality of engagement teeth 70 is equal to the pitch of the plurality of engagement teeth 80. Therefore, the number of teeth of the engaging teeth 70 and 80 is equal to each other.
Further, the tooth depth of at least one engagement tooth 80 of the plurality of engagement teeth 80 may be different from that of the other engagement teeth 80, for example, one of the engagement teeth 80. Only the teeth may be higher than the teeth of the other engaging teeth 80. In this case, the collision between the engagement tooth 70 and the tooth tip can occur only in one of the engagement teeth 80 having a high tooth depth, so that a more stable meshing operation can be performed.

For example, when the outer diameter of the end surface of the second rotating body 55 (the end surface on the butting side with respect to the first rotating body 54) is about 14 mm, the number of teeth of the engaging teeth 80 may be set to 3-12.
Here, when a large number of engagement teeth 80 are set, the interval between the engagement teeth 80 is reduced, and the first rotating body 54 required for the engagement teeth 80 to mesh with the engagement teeth 70 is obtained. The amount of rotation can be reduced. In addition, when the number of engaging teeth 80 is set to be small, the circumferential width of the engaging teeth 80 can be increased, and the strength of the engaging teeth 80 can be improved.

  The first meshing tooth surface 71 and the second meshing tooth surface 81 are arranged along the axial direction X of the spiral rod 57 even if they are inclined with respect to the axial direction X of the spiral rod 57 within a range of construction errors. Within the specified range. Further, the first tooth tip 73 and the second tooth tip 83 are within the above-described pointed range even if they are R-shaped within the range of processing errors.

Since the first tooth tip 73 and the second tooth tip 83 are each formed in a pointed shape, the first rotating body 54 in the disengaged state approaches the second rotating body 55 as shown in FIG. And the first tooth tip 73 and the second tooth tip 83 can be prevented from colliding with each other. As shown in FIG. 4B, the first meshing tooth surface 71 and the second meshing tooth surface 81 can be smoothly meshed.
In addition, since the first meshing tooth surface 71 and the second meshing tooth surface 81 are formed along the axial direction X of the spiral rod 57, the rotation of the first rotating body 54 around the spiral rod 57 is made second. When the rotation is transmitted to the rotating body 55, a force in a direction in which the meshing between the first meshing tooth surface 71 and the second meshing tooth surface 81 is released (a force in a direction in which the first rotating body 54 is separated from the second rotating body 55). ) Does not occur. For this reason, the engagement state of the 1st rotary body 54 and the 2nd rotary body 55 is maintainable.
Furthermore, even if the first rotating body 54 and the second rotating body 55 are engaged, the first tooth tip 73 of the engaging tooth 70 of the first rotating body 54 does not hit the end surface of the second rotating body 55. The first tooth tip 73 is not crushed and deformed. For this reason, for example, when the first tooth tip 73 is deformed due to a collision, the first tooth tip 73 may interfere with the surrounding structure when the first rotating body 54 rotates. Since the first tooth tip 73 is not deformed by the collision, the first tooth tip 73 does not interfere with the surrounding structure even if the first rotating body 54 rotates, and the first rotating body 54 is smooth. Rotation can be maintained.

As shown in FIG. 3, the coil spring 56 is disposed between the spring receiving portion of the first rotating body 54 and the end portion of the case 59 and is sheathed around the engaging teeth 70 and 80. The coil spring 56 elastically biases the first rotating body 54 in the B direction (second direction), which is separated from the second rotating body 55 along the axial direction X, and the first rotating body 54 and the second rotating body. 55 is maintained in a separated state.
The first rotating body 54, the second rotating body 55, and the coil spring 56 constitute a clutch mechanism. In this clutch mechanism, when the separated state between the first rotating body 54 and the second rotating body 55 is maintained by the coil spring 56, the rotation is not transmitted from the first rotating body 54 to the second rotating body 55. In the state where the first rotating body 54 approaches the second rotating body 55 against the elastic biasing force of the coil spring 56 and the engaging teeth 70 are engaged with the engaging teeth 80, the first rotating body 54 To the second rotator 55 to be engaged. In this engaged state, the second rotating body 55 is rotated with respect to the case 59 to generate a frictional resistance.

  As shown in FIG. 3, the case 59 forms a hollow portion in which the second rotating body 55 is disposed, and a split groove 591 is formed. The inner surface of the case 59 has a circular cross section. An adjustment screw 592 for adjusting the inner diameter is attached to both sides of the split groove 591 in the case 59, and the contact pressure of the case 59 with respect to the second rotating body 55 is adjusted by adjusting the adjustment screw 592. By adjusting the contact pressure, the frictional force with the case 59 generated by the rotation of the second rotating body 55 can be adjusted.

  As shown in FIGS. 2B and 2C, the transmission device 40 includes a guide member 41 and a catcher 43 as an engaging body. The catcher 43 is configured to be engageable with a strike 44 as an engaged body attached to the groove forming portion of the upper collar 21A.

  The guide member 41 is attached to the U-shaped frame 4, and the catcher 43 is fitted along the axial direction X of the spiral rod 57 so as to be slidable. Further, the guide member 41 has a guide groove forming portion 411 that forms a guide groove in which a guide pin 432A of a protruding and retracting member 432 described later is disposed. The guide groove forming portion 411 is formed so as to extend along the axial direction X, and the right end side shown in FIG.

The catcher 43 includes a catcher main body 431 and a projecting / retracting member 432 attached to the catcher main body 431 so as to be capable of appearing and retracting, and a protrusion 433 is formed on the catcher main body 431. The protrusion 433 is arranged with an interval in the axial direction X between the protruding and retracting member 432, and this interval is such that the strike 44 can be engaged between the protruding 433 and the protruding and protruding member 432. It is an interval.
The catcher main body 431 is attached to an end portion of the spiral rod 57 that protrudes to the left from the second rotating body 55 in FIG. The catcher body 431 is formed with a long hole 431A along the vertical direction and a guide bar 431B along the axial direction X. A guide pin 432A of the retracting member 432 is inserted into the long hole 431A, and the retracting member 432 can be guided in the vertical direction. The guide bar 431B is disposed in the guide groove formed in the guide groove forming portion 411, and is configured to be guided in the axial direction X along the guide groove.

  The raising / lowering member 432 of the catcher 43 can be raised and lowered in the vertical direction in the movement of the catcher 43 in the axial direction X, and the right end portion where the guide pin 432A is inclined above the guide groove forming portion 411 shown in FIG. When the guide pin 432A is located further to the right than the right end of the guide groove forming portion 411, the catcher main body 431 protrudes from the catcher main body 431.

[Operation of this embodiment]
Hereinafter, the closing operation and the opening operation of the sliding door 1 according to the present embodiment will be described.
[Closing action]
First, the closing operation of the sliding door 1 will be described. For convenience of explanation, one side piece 4B is not shown in FIG.
As shown in FIG. 5 (A), when the catcher 43 and the strike 44 are not in contact with each other, the catcher 43 is located on the door bottom side with respect to the guide member 41, and the protrusion 433 of the catcher 43 is in the catcher body 431. Immersive.

  When the door 20 </ b> A is manually operated to move to the left side toward the door-side vertical frame 13, the strike 44 approaches the catcher 43 and comes into contact with the protrusion 433. Subsequently, the closing movement of the door body 20A causes the catcher 43 to move in the direction A along the axial direction X toward the door end, and the guide pin 432A is guided by the guide groove forming portion 411, and the retracting member 432 is moved to the catcher. It protrudes downward from the main body 431 and comes into contact with the strike 44 as shown in FIG. As a result, the catcher 43 is in an engaged state in which the strike 44 is sandwiched between the protrusion 433 and the protruding and retracting member 432. Further, the left end portion of the spiral rod 57 in FIG. 5 is pulled by the catcher 43, thereby moving in the A direction.

In the closing movement of the door 20A described above, the braking device 50 operates as follows.
When the spiral rod 57 moves in the A direction at a moving speed lower than, for example, 200 to 300 mm / S due to the closing movement of the door body 20A, the first rotating body 54 that is screw-engaged with the spiral rod 57 rotates. At this time, a moving force in the A direction toward the second rotating body 55 is also applied to the first rotating body 54, but the first rotating body 54 is separated from the second rotating body 55 by the coil spring 56 (see FIG. 4 (A)) is maintained, rotation is not transmitted from the first rotating body 54 to the second rotating body 55, and the second rotating body 55 does not rotate with respect to the case 59. Accordingly, no frictional resistance is generated between the second rotating body 55 and the case 59, and the door body 20A smoothly closes and moves.

  Next, when the moving speed of the door 20A is increased to, for example, 200 to 300 mm / S or more, the moving force in the axial direction X in which the first rotating body 54 approaches the second rotating body 55 increases, and the first rotation The body 54 approaches the second rotating body 55 against the elastic urging force of the coil spring 56 and is engaged so as to be able to transmit rotation (see FIG. 4B). The rotation is transmitted to the rotating body 55, and the second rotating body 55 rotates with respect to the case 59. Accordingly, a frictional resistance force is generated between the second rotating body 55 and the case 59 and applied to the spiral rod 57, the closing movement of the door 20A is braked, and the movement of the door 20A in the closing direction is decelerated.

As shown in FIG. 5C, when the door 20A comes into contact with the vertical frame 13 on the door tip side, the closing movement of the door 20A stops, and the movement of the spiral rod 57 in the A direction also stops. At this time, since the first rotating body 54 is separated from the second rotating body 55 by the elastic biasing force of the coil spring 56, the engagement with the second rotating body 55 is released.
Thus, the braking device 50 performs a braking operation according to the moving speed in the closing movement of the door 20A.

  When the moving speed decreases during the closing movement of the door 20A and the moving force that the first rotating body 54 approaches the second rotating body 55 is less than the elastic biasing force of the coil spring 56, the first rotating body 54 is used. Is separated from the second rotating body 55 by the coil spring 56, and the engagement is released. Therefore, the braking force for the closing movement of the door 20A is eliminated, and the closing movement operation can be performed with a small force.

[Opening operation]
Hereinafter, the opening operation of the sliding door 1 will be described.
When the door 20A is operated to open from the position (closed position) shown in FIG. 5C toward the door bottom, the catcher 43 engaged with the strike 44 moves the spiral rod 57 in the axial direction X. And move in the B direction while pushing toward the door edge.
Here, even if the spiral rod 57 is pushed by the catcher 43, only the moving force in the B direction away from the second rotating body 55 is applied to the first rotating body 54. No frictional resistance is generated, the spiral rod 57 can be moved in the B direction with a light force, and the door 20A can be smoothly opened and moved.
Subsequently, by the opening movement of the door 20A, the guide pin 432A is guided by the right-side end portion of the guide groove forming portion 411 that is inclined upward as shown in FIG. As shown in FIG. 5 (A), the catcher 43 and the strike 44 are disengaged, and the door 20A moves to the fully open position (not shown).

[Effect of this embodiment]
(1) In the present embodiment, the braking device 50 includes a first rotator 54, a second rotator 55 with which the first rotator 54 is engaged so as to transmit rotation, and the first rotator 54 as a second rotator. A case in which a coil spring 56 that is biased in the B direction away from 55, a spiral rod 57 inserted through the first rotating body 54 and the second rotating body 55, and a resistance force against the rotation of the second rotating body 55 are generated. 59 and a catcher 43 attached to the spiral rod 57, the second rotating body 55 is disposed between the first rotating body 54 and the catcher 43 in the axial direction X of the spiral rod 57, and the spiral rod 57 has its axis The first rotary body is arranged so as to be movable in the direction X and in the A direction that causes the first rotary body 54 to approach the second rotary body 55 and in the B direction that is separated from the second rotary body 55. 4 is an axial direction X of the spiral rod 57, and the catcher 43 is screw-engaged with the spiral rod 57 so as to be rotatable by movement in the A direction away from the second rotating body 55. Depending on the moving speed in the direction, the coil spring 56 is engaged with the non-engaged state separated from the second rotary body 55 by the biasing force of the coil spring 56 and the second rotary body 55 so as to be able to transmit the rotation against the biasing force of the coil spring 56. The engagement state is switched.
Since the second rotating body 55 is disposed between the first rotating body 54 and the catcher 43 because of the above configuration, when a moving force in the A direction is applied to the catcher 43 from the strike 44 that engages with the catcher 43, The catcher 43 pulls the spiral rod 57 in the B direction away from the second rotating body 55, whereby the spiral rod 57 moves in the A direction and the first rotating body 54 approaches the second rotating body 55. Can be engaged. In this engaged state, rotation is transmitted from the first rotating body 54 to the second rotating body 55 and a resistance force is generated by the rotation of the second rotating body 55 with respect to the case 59, but the spiral rod 57 moving in the A direction is compressed. There is no risk of buckling.
Further, when a movement force in the B direction is applied from the strike 44 to the catcher 43, the catcher 43 is pushed in a direction approaching the second rotating body 55. In this case, the first rotating body 54 is Since it can be separated from the two-rotor 55 and brought into the non-engaged state, an excessive load is not applied when the spiral rod 57 moves in the B direction, and the possibility that the spiral rod 57 is buckled or the like can be suppressed.
Further, for example, when the braking device 50 is attached to the frame body 10 and the strike 44 engaged with the catcher 43 of the braking device 50 is attached to the door body 20A, the first rotating body 54 is in a state where the door body 20A is stationary. Is biased in the B direction by the coil spring 56 and is brought into a disengaged state separated from the second rotating body 55. When the strike 44 is engaged with the catcher 43 by the movement of the door 20A and the spiral rod 57 moves in the A direction, the first rotating body 54 rotates by the movement of the spiral rod 57 in the A direction at a predetermined speed or more. While approaching the second rotating body 55 against the urging force of the coil spring 56. Even when approaching in this way, the first rotating body 54 is not engaged with the second rotating body 55 in a state where the approaching force of the first rotating body 54 to the second rotating body 55 is less than the biasing force of the coil spring 56. Since it is in the combined state, rotation transmission from the first rotating body 54 to the second rotating body 55 is not performed, and the resistance force of the case 59 against the rotation of the second rotating body 55 is not generated. Thereby, the door 20A can be moved smoothly without the resistance of the case 59 being applied to the door 20A.
As the moving speed of the spiral rod 57 in the A direction increases, the frictional force between the spiral rod 57 and the first rotating body 54 increases, and the first rotating body 54 approaches the second rotating body 55 in the A direction. When the moving force (approaching force) exceeds the urging force of the coil spring 56 and the first rotating body 54 approaches the second rotating body 55 and becomes engaged, the rotation of the first rotating body 54 is rotated to the second rotating body. 55. As a result, the second rotating body 55 rotates to generate a resistance force in the case 59, the resistance force of the case 59 is applied to the door body 20A, and the movement of the door body 20A can be braked.
Furthermore, in the present embodiment, the following effects can be exhibited.
(2) In the embodiment, the first rotating body 54 and the second rotating body 55 are formed with engaging teeth 70 and 80 that engage with each other. Therefore, the amount of rotation until the first rotating body 54 engages with the second rotating body 55 is set according to the arrangement angle of the engaging teeth 70 and 80 because the engaging teeth 70 and 80 are engaged with each other. it can. Therefore, for example, by increasing the number of engaging teeth 70 and 80 to form a small arrangement angle, the amount of rotation until the first rotating body 54 engages with the second rotating body 55 can be reduced.
Further, for example, by reducing the number of engaging teeth 70 and 80, the engaging teeth 70 and 80 can be formed larger and the strength can be improved.
(3) In the above embodiment, since the braking force is generated by pulling the spiral rod 57 in the direction A toward the door end side, the catcher 43, the spiral rod 57, the first rotating body 54, and the second rotating body 55 The position is determined autonomously along the axis of the spiral rod 57. Thus, the operation of the braking device 50 can be further stabilized without being affected by the dimensional accuracy and assembly accuracy of each component.
(4) In the above embodiment, since the braking force is applied to the door body 20A based on the frictional resistance force between the second rotating body 55 and the case 59, the door body is based on the viscous resistance force of a viscous fluid such as damping grease. Compared with the case where the braking force is applied to 20A, it is less affected by temperature changes and the like, and the braking by the braking device 50 can be stabilized.

[Modification]
The present invention is not limited to the configuration described in the above embodiment, and modifications within a range in which the object of the present invention can be achieved are included in the present invention.
For example, in the above-described embodiment, the braking device 50 is attached to the upper frame 11 and the strike 44 is attached to the upper rod 21A. However, the present invention is not limited thereto, and the braking device 50 is attached to the lower frame 12 and the strike 44 is It may be attached to the lower collar 22A. Further, the braking device 50 may be attached to the upper rod 21A, and the strike may be attached to the upper frame 11, the braking device 50 is attached to the lower rod 22A, and the strike 44 is attached to the lower frame 12. Also good. In this case, by arranging the braking device 50 in the left-right reverse direction and arranging the strike 44 at a position corresponding to the catcher 43, the movement of the door 20A in the closing direction can be braked.

In the above-described embodiment, the number of teeth of the engaging teeth 70 and 80 is equal to each other. However, the number of teeth is not limited to this, and one of the engaging teeth 70 and 80 may be an integer multiple of the other. For example, the number of teeth of the engaging teeth 70 of the first rotating body 54 may be an integral multiple of the number of teeth of the engaging teeth 80 of the second rotating body 55.
Further, the first non-meshing tooth surface 72 and the second non-meshing tooth surface 82 are formed in a flat surface shape, but may be formed in a convex or concave curved shape.
Further, the outer diameter of the first rotating body 54 may be formed slightly smaller than the outer diameter of the second rotating body 55.

In the above-described embodiment, the first rotating body 54 and the second rotating body 55 of the braking device 50 are formed with right-triangular engaging teeth 70 and 80 that are engaged with each other. Any shape that can be engaged is acceptable, and for example, a rectangular shape may be used.
Moreover, the 1st rotary body 54 and the 2nd rotary body 55 may have the friction part which replaces with the engagement teeth 70 and 80 and carries out friction contact so that rotation transmission is mutually possible.

In the above-described embodiment, the screw pitch of the spiral rod 57 is equal pitch, but is not limited thereto, and the screw pitch may be varied along the axial direction X of the spiral rod 57. With this configuration, the moving force applied to the first rotating body 54 by the movement of the spiral rod 57 in the axial direction X can be adjusted.
The screw pitch may be set in consideration of the braking timing and the braking force for the closing movement of the door 20A. For example, the screw pitch of the spiral rod 57 closer to the door butt side may be larger than the screw pitch near the door tip side. In this case, the first rotating body 54 is closer to the door butt side of the spiral rod 57. It becomes easier to engage with the second rotating body 55 in the state of screw engagement closer to the door end than in the state of screw engagement, and the amount of rotation with respect to the movement of the spiral rod 57 in the axial direction X also increases. For this reason, the closing movement can be smoothly performed at the start of movement of the door 20A, and the closing movement can be braked at the end of movement.

  In the above-described embodiment, the braking device 50 elastically biases the first rotating body 54 in the direction away from the second rotating body 55 by the coil spring 56, but is not limited to this. For example, an elastic body such as rubber or a spring is used. It may be elastically biased by a washer or may be biased by a magnet.

In the said embodiment, although the braking device 50 is attached to the sliding door 1, instead of this braking device 50, you may attach the closer 3 (automatic movement apparatus) shown, for example in FIG.
The closer 3 automatically closes and moves the door 20A. In addition to the configuration of the braking device 50 described above, the closer 3 is connected to a portion of the spiral rod 57 protruding to the right from the first rotating body 54 in FIG. The providing device 30 is provided.

The applying device 30 includes a cylindrical body 31 and a torsion spring (not shown) disposed in the cylindrical body 31, and one end of the torsion spring is fixed to a rotating member that is screw-engaged with the spiral rod 57. The other end is fixed to the cylinder 31.
The applying device 30 transmits the elastic force in the rotational direction of the torsion spring as a moving force in the axial direction X to the spiral rod 57, and applies the moving force in the axial direction X that causes the door 20A to be closed and moved to the spiral rod 57.

Thus, by attaching the closer 3 to the sliding door 1, the moving force in the axial direction X is applied from the applying device 30 to the spiral rod 57 in a state where the strike 44 is engaged with the catcher 43 by the moving operation of the door body 20 </ b> A. The door 20A can be automatically moved in the closing direction.
Further, when the first rotating body 54 is engaged with the second rotating body 55 by the movement of the spiral rod 57 in the axial direction X, the closing movement of the door 20A can be braked as described above.

In addition, although the provision apparatus 30 is arrange | positioned on the right side rather than the 1st rotary body 54 in FIG. 6, it is not restricted to this, It is arrange | positioned between the 2nd rotary body 55 and the case 59, and the transmission apparatus 40. Also good.
Moreover, it is good also as an automatic opening apparatus which arrange | positions the structure of the closer 3 mentioned above in the left-right reverse direction, and opens and moves the door 20A automatically.

  In the said embodiment, although the sliding door 1 was demonstrated as a fitting with which the closer 3 of this embodiment is attached, a folding door, a raising / lowering window, a partition, a sliding gate, a shutter, a gate, etc. may be sufficient.

  DESCRIPTION OF SYMBOLS 1 ... Sliding door (joint), 10 ... Frame, 11 ... Upper frame, 12 ... Lower frame, 13 ... Vertical frame, 20A, 20B ... Door, 21A, 21B ... Upper rod, 22A, 22B ... Lower rod, 23A, 23B ... Vertical shaft, 24A, 24B ... Panel, 3 ... Closer (automatic movement device), 30 ... Applying device, 31 ... Cylinder, 4 ... U-shaped frame, 40 ... Transmission device, 41 ... Guide member, 411 ... Guide groove Forming part, 43 ... Catcher, 431 ... Catcher body, 431A ... Elongated hole, 431B ... Guide bar, 432 ... Intruding member, 432A ... Guide pin, 433 ... Projection, 44 ... Strike, 4A ... Bottom piece, 4B ... Side piece 50, braking device, 52 ... receiving member, 54 ... first rotating body, 55 ... second rotating body, 56 ... coil spring, 57 ... spiral rod, 58 ... presser plate, 59 ... case, 591 ... split groove, 592 ... Adjustment screw 6 ... Pressing member, 60 ... Receiving member, 7 ... Holding member, 70, 80 ... Engaging tooth, 71 ... First meshing tooth surface, 72 ... First non-meshing tooth surface, 73 ... First tooth tip, 81 ... second meshing tooth surface, 82 ... second non-meshing tooth surface, 83 ... second tooth tip, X ... axial direction.

Claims (7)

A first rotating body, a second rotating body with which the first rotating body is engaged so as to be able to transmit rotation, and a biasing member that biases the first rotating body in a separating direction with respect to the second rotating body, A spiral rod inserted through the first rotating body and the second rotating body, a resistor generating resistance against rotation of the second rotating body, and an engaging body attached to the spiral rod,
The second rotating body is disposed between the first rotating body and the engaging body in the axial direction of the spiral rod,
The spiral rod is movable in a first direction for moving the first rotating body closer to the second rotating body and a second direction for separating the first rotating body from the second rotating body. Arranged,
The first rotating body is screw-engaged with the spiral rod so as to be rotatable by movement in a first direction which is an axial direction of the spiral rod and the engaging body is separated from the second rotating body,
The first rotating body resists the disengaged state separated from the second rotating body by the biasing force of the biasing member and the biasing force of the biasing member according to the moving speed in the first direction. And switching the engaged state engaged with the second rotating body so as to transmit the rotation. The braking device according to claim 1, wherein
The first rotating body and the second rotating body are formed with engaging teeth that engage with each other. The braking device according to claim 1 or 2,
The braking device, wherein the spiral rod has a different screw pitch along the axial direction. In the braking device according to any one of claims 1 to 3,
One end side of the spiral rod is formed with a larger thread pitch than the other end side,
The first rotating body moves relatively from one end side to the other end side of the spiral rod by movement of the spiral rod in the axial direction by movement of the spiral rod in the axial direction. A braking device according to any one of claims 1 to 4, and an applying device that is connected to a spiral rod of the braking device and applies an axial moving force to the spiral rod. Automatic moving device. A closing face material that can be disposed in an opening of a building, and the braking device according to any one of claims 1 to 4,
An engagement body of the braking device is attached to one of the closing face material side and the opening side.
The joinery of the said braking device is attached to the other of the said closing face material side and the said opening part side. A closing face material that can be placed in an opening of a building, and the automatic movement device according to claim 5,
An engagement body of the braking device is attached to one of the closing face material side and the opening side.
The joinery of the said braking device is attached to the other of the said closing face material side and the said opening part side.

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