JP6677622B2 - Opening / closing braking devices, braking devices and fittings - Google Patents

Description

  The present invention relates to an opening / closing braking device, a braking device, and a fitting for braking movement of a door or the like in an opening direction and a closing direction.

  Conventionally, a main body case attached to a closing member such as a sliding door, a window shoji, a pressing member attached to an opening frame, a braking case disposed in the main body case, and a hollow shaft rotatably inserted into the braking case. A spiral rod that is screw-engaged with the hollow shaft and is movable in the axial direction, a guide block disposed in the main body case and attached to the tip of the spiral rod, and a spring disposed between the braking case and the guide block. 2. Description of the Related Art There is known a braking device provided with (see Patent Document 1). A braking fluid that generates a resistance due to the rotation of the hollow shaft is stored in the braking case. The spring urges the tip of the spiral rod in a direction away from the brake case.

  In this braking device, when the closing member moves, the pressing member and the guide block come into contact with each other, and the spiral rod moves in the direction in which the tip approaches the braking case. A braking force is generated by generating a resistance based on the movement of the closing member.

JP 4829713 A

  When the pressing member and the guide block of the braking device described in Patent Literature 1 are arranged closer to the door end than the braking case, the guide block approaches the pressing member and pushes when the closing member moves in the opening direction. As a result, the movement of the closing member in the opening direction can be braked. However, when the closing member moves in the closing direction, the guide block moves away from the pressing member, so that the movement of the closing member in the closing direction cannot be braked.

  Further, when the pressing member and the guide block of the braking device described in Patent Literature 1 are arranged closer to the door end than the braking case, the pressing member approaches the guide block when the closing member moves in the closing direction. As a result, the movement of the closing member in the closing direction can be braked. However, when the closing member moves in the opening direction, the pressing member moves away from the guide block, so that the movement of the closing member in the opening direction cannot be braked.

  Here, by installing the two braking devices in opposite directions in the moving direction of the closing member, when the closing member moves in the opening direction, the opening movement is braked by one of the braking devices, and the closing member is moved in the opening direction. It is conceivable that the closing movement is braked by the other braking device when the vehicle moves to the position (1). In this case, the movement of the closing member in both the opening direction and the closing direction can be braked.

  By the way, when the pressing member of one braking device is pressed against the guide block by the movement of the closing member, the tip of the spiral rod of one braking device is set to protrude from the braking case to the other braking device side, and the closing member is set. When the pressing member of the other brake device is pressed against the guide block by the movement in the reverse direction, the tip of the spiral rod of the other brake device may be set to protrude from the brake case to the one brake device side. . In this case, the length dimension in which the spiral rod of one braking device projects from the braking case to the other braking device side, and the length dimension in which the spiral rod of the other braking device projects from the braking case to the one braking device side. It is necessary to form an interval corresponding to the longer one of the two braking devices between the two braking devices so that the two braking devices do not interfere with each other. As described above, a large installation space is required to form a space between the two braking devices.

  An object of the present invention is to provide an opening / closing brake device, a brake device, and a fitting that can reduce the installation space.

  The opening / closing braking device according to the present invention includes a first braking device that brakes movement of the closing surface material in the closing direction, and a second braking device that brakes movement of the closing surface material in the opening direction, wherein the first braking device Comprises a first spiral rod, a first rotating body in which the first spiral rod is screwed movably in the axial direction, and a first resistor that generates a resistance to the rotation of the first rotating body. The second braking device includes a second spiral rod, a second rotating body in which the second spiral rod is threadably engaged in an axial direction, and a second rotating body that generates a resistance force against rotation of the second rotating body. Comprising a two-resistor, the first braking device and the second braking device are arranged to face each other in the axial direction of the first spiral rod and the second spiral rod, and the first spiral rod and the second Two Iraruroddo is characterized by being disposed at different positions in the direction orthogonal to the axial direction.

According to the opening / closing brake device of the present invention, even if the first brake device and the second brake device are arranged close to each other in the axial direction, the first spiral rod and the second spiral rod are not located coaxially. Can be arranged without interfering with each other.
Therefore, the length of the portion of the first spiral rod projecting from the first rotating body toward the second braking device, and the length of the portion of the second spiral rod projecting from the second rotating body toward the first braking device. The distance corresponding to the longer one of the length dimensions can eliminate the need to form between the first braking device and the second braking device, and the length of the opening / closing braking device in the axial direction can be eliminated. By reducing the size, the installation space for the open / close braking device can be reduced.

  In the opening and closing braking device of the present invention, the first rotating body is a first driving rotating body that is screw-engaged with the first spiral rod, a first driven rotating body that can rotate with respect to the first spiral rod, A first urging member for urging the first driving rotator in a direction away from the first driven rotator, wherein the first resistor has a resistance to rotation of the first driven rotator. The first rotating body is configured to generate a force, and the first biasing member is configured to generate the force in accordance with a moving speed of the first spiral rod that moves in the axial direction based on a movement of the closing face member in a closing direction. The first driving rotator is disengaged from the first driven rotator by the urging force of the member, and the first driving rotator is disengaged from the first driven rotator against the urging force of the first urging member. It is configured to be switchable between an engaged state in which rotation can be transmitted to the driven rotating body. The second rotating body includes a second driving rotating body screw-engaged with the second spiral rod, a second driven rotating body rotatable with respect to the second spiral rod, and the second driving rotating body. A second biasing member that biases the second driven rotary body in the separation direction, wherein the second resistor is configured to generate a resistance to the rotation of the second driven rotary body, The second rotating body is configured to move the second rotating body by the urging force of the second urging member in accordance with a moving speed of the second spiral rod that moves in the axial direction based on the movement of the closing face material in the opening direction. When the driving rotator is disengaged from the second driven rotator in a disengaged state, the second driving rotator can transmit rotation to the second driven rotator against the urging force of the second urging member. It is preferable to be able to switch between the engaged state and the engaged state.

According to such a configuration, when the first spiral rod moves in the axial direction due to the movement of the closing face material in the closing direction, the first driving rotating body rotates while being rotated by the movement of the first spiral rod to apply the first bias. It approaches the first driven rotating body against the urging force of the member. Even when approaching in this way, while the first driving rotator is not engaged with the first driven rotator, the rotation is not transmitted from the first driving rotator to the first driven rotator, so that the first driven rotator is not driven. No resistance of the first resistor to the rotation of the rotating body is generated. Thereby, the closing face member can be smoothly moved in the closing direction without applying the resistance force of the first resistor to the closing face member.
When the moving speed of the first spiral rod in the axial direction due to the movement of the closing face material in the closing direction increases, the first driving rotator approaches the first driven rotator to be engaged, and the first driving rotator is engaged. Is transmitted to the first driven rotor. Thereby, the first driven rotating body rotates to generate a resistance force on the first resistor, and the resistance force of the first resistor is applied to the closing face member, so that the movement of the closing face member in the closing direction can be braked.

Further, when the second spiral rod moves in the axial direction due to the movement of the closing face material in the opening direction, the second drive rotating body rotates against the movement of the second spiral rod and resists the urging force of the second urging member. To approach the second driven rotor. Even when approaching in this manner, while the second driving rotator is not engaged with the second driven rotator, the rotation is not transmitted from the second driving rotator to the second driven rotator. No resistance of the second resistor to the rotation of the rotating body is generated. Thereby, the closing face material can be smoothly moved in the opening direction without applying the resistance of the second resistor to the closing face material.
As the axial movement speed of the second spiral rod increases due to the movement of the closing face material in the opening direction, the second driving rotator approaches the second driven rotator to be engaged, and the second driving rotator is engaged. Is transmitted to the second driven rotor. As a result, the second driven rotating body rotates to generate a resistance force on the second resistor, and the resistance of the second resistor is applied to the closing face member, whereby the movement of the closing face member in the opening direction can be braked.

In the opening / closing braking device of the present invention, the first braking device includes a first case containing the first rotating body and the first resistor, and the second braking device includes the second rotating body and the first rotating body. A second case accommodating a two-resistance body, wherein the first case has a first rod insertion hole through which the first spiral rod is inserted, and a first rod accommodation hole capable of accommodating the second spiral rod. Is preferably formed in the second case, and a second rod insertion hole through which the second spiral rod is inserted, and a second rod accommodation hole capable of accommodating the first spiral rod are preferably formed. .
According to such a configuration, when the first spiral rod inserted into the first rod insertion hole moves in the axial direction, the first spiral rod can be accommodated in the second rod accommodation hole, and the second rod When the second spiral rod inserted into the insertion hole moves in the axial direction, the second spiral rod can be accommodated in the first rod accommodation hole.
Also, since the first case has the first rod insertion hole and the first rod accommodation hole, while the second case has the second rod insertion hole and the second rod accommodation hole, the compatibility of the first case and the second case is improved. And the manufacturing cost can be reduced by using common parts.

In the opening / closing braking device of the present invention, the first braking device includes a first engaging body attached to the first spiral rod, and a first engaged body with which the first engaging body engages, The second braking device includes a second engagement body attached to the second spiral rod, and a second engaged body with which the second engagement body engages, wherein the first engagement body includes the first engaged body. It is configured to transmit the movement of the first engaged body to the first spiral rod in an engaged state with the united body, and the second engaged body is configured to transmit the second engaged body in the engaged state with the second engaged body. It is preferable that the movement of the engaged body is transmitted to the second spiral rod.
According to such a configuration, the first engagement body and the second engagement body are attached to one of the opening side and the closed surface material side of the building, and the first engaged body and the second engagement body are attached to one of the other sides. When the closing face is moved in the closing direction with the engaged body attached, the first engaging body can be engaged with the first engaged body, and braking by the first braking device is transmitted to the closing facing. Can be made possible. Further, when the closing panel is moved in the opening direction, the second engaging member can be engaged with the second engaged member, and the braking by the second braking device can be transmitted to the closing panel.

In the opening / closing brake device according to the present invention, the first engagement body transmits a moving force of the first engagement body to the first spiral rod as an axial tension force in an engagement state with the first engaged body. Wherein the second engaging body transmits a moving force of the second engaged body to the second spiral rod as an axial tensile force in an engaged state with the second engaged body. It is preferred that
According to such a configuration, when an axial tension is applied to the first spiral rod from the first engagement body, the first spiral rod is not compressed in the axial direction, and the first spiral rod is not compressed. Even if the braking force of the first braking device is generated by the rod being pulled in the axial direction, it is possible to prevent the first spiral rod from buckling.
Further, when a tensile force in the axial direction is applied to the second spiral rod from the second engagement body, the second spiral rod is not compressed in the axial direction, and the second spiral rod is pulled in the axial direction. As a result, even if the braking force of the second braking device is generated, it is possible to prevent the second spiral rod from buckling.

In the opening / closing braking device of the present invention, each of the first engagement body and the second engagement body has two rod mounting holes formed at different positions in a direction orthogonal to the axial direction. Is preferred.
According to such a configuration, by attaching the first spiral rod to one of the two rod attachment holes of the first engagement body, the position in the direction orthogonal to the axial direction of the first spiral rod is selected from the two positions. it can. In addition, by attaching the second spiral rod to one of the two rod attachment holes of the second engagement body, the position of the second spiral rod in the direction orthogonal to the axial direction can be selected from the two positions. As described above, the two rod mounting holes are respectively formed in the first engagement body and the second engagement body, so that the interchangeability of the first engagement body and the second engagement body can be improved, and the manufacturing cost can be improved by using common parts. Can be reduced.

In the opening / closing braking device of the present invention, the first braking device includes a first guide body that guides the first engagement body along the axial direction, and the second braking device includes the second engagement body A second guide body that guides along the axial direction, wherein the first engagement body and the second engagement body include an engagement body, two protruding and retractable members that can protrude and retract from the engagement body; And a guide pin formed on each of the two retractable members, wherein the first guide body has a first guide groove for guiding the two guide pins of the first engagement body, and the second guide body has A second guide groove for guiding the two guide pins of the second engagement body is formed, and the first guide groove and the second guide groove are configured so that the two guide pins protrude from the two retractable members. A projecting guide portion for guiding the A closing-side guide portion that guides the guide pin located on the closing direction side of the two guide pins at the end portion on the closing direction side of the exit guide portion in the immersion direction, and an end portion on the opening direction side of the protruding guide portion. It is preferable that each of the two guide pins includes an open-side guide portion that guides the guide pin located on the open direction side in the immersion direction.
According to such a configuration, when the two guide pins are guided by the protruding guide portions, the two retractable members project from the engaging body main body, and the first engaged member (the second movable member) is protruded by the two retractable members. The engagement state can be maintained by sandwiching the engagement body).
When the guide pin of the two guide pins located on the closing direction side of the protruding guide portion is guided by the closing side guide portion, the guide pin on the closing direction side sinks into the engagement body. Therefore, the first engaged body (second engaged body) is disengaged from the first engaged body (second engaged body), and can be moved in the closing direction.
When one of the two guide pins, which is located on the opening direction side of the projecting guide portion, is guided by the opening side guide portion, the guide pin on the opening direction side sinks into the engagement body. Therefore, the first engaged body (second engaged body) is disengaged from the first engaged body (second engaged body), and can be moved in the opening direction.
Thus, at an arbitrary position before the closing position by the closing face material, the first engaging body and the first engaged body can be disengaged by moving the closing face material in the closing direction, and the closing face material can be disengaged from the first facing body. It can be closed smoothly without any braking by one braking device. Further, at an arbitrary position before the opening and closing position by the closing face material, the engagement of the second engaging body and the second engaged body can be released by movement of the closing face material in the opening direction, and It can be opened smoothly without any braking by the braking device.
Further, it is not necessary to set the length of the opening / closing brake device in the axial direction to be large in accordance with the position where the closing face material closes or opens, and the length dimension can be reduced, thereby reducing the installation space of the opening / closing brake device. it can.

  The braking device according to the present invention includes a spiral rod, a rotating body in which the spiral rod is threadably engaged in an axial direction, a resistor that generates a resistance to the rotation of the rotating body, and a spiral rod. An engaging body, an engaged body with which the engaging body engages, and a guide body for guiding the engaging body along an axial direction of the spiral rod, wherein the engaging body includes an engaging body main body and the engaging body. The apparatus includes two retractable members that can protrude and retract from the united main body, and guide pins formed on the two retractable members, and transmits the movement of the engaged body to the spiral rod in a state of engagement with the engaged body. The guide body is formed with a guide groove for guiding the two guide pins of the engagement body, and the guide groove is provided with the two guides in a state where the two retractable members protrude. A projecting guide portion for guiding the guide pin, an end guide portion for guiding a guide pin located at the one end side of the two guide pins at an end portion on one end side of the projecting guide portion in a immersion direction, and the projecting guide. And a guide portion located at the other end of the portion and guides the guide pin located at the other end of the two guide pins in the immersion direction.

ADVANTAGE OF THE INVENTION According to the braking device of this invention, an engaging body is attached to either one of the opening part side of a building and the closing face material side, and a closing face material is moved in the state which attached the engaged body to either other side. When operated, the engaging body can be engaged with the engaged body, and the braking by the braking device can be transmitted to the closing panel.
Furthermore, in a state where the two guide pins are guided by the protruding guide portions, the two retractable members protrude from the main body of the engaging body, and the engaged state can be maintained by sandwiching the engaged body between the two retractable members. .
When one of the two guide pins, which is located on the closing direction side of the protruding guide portion, is guided by the one end side guide portion, the one end side guide pin is immersed in the engagement body. For this reason, the engaged body is disengaged from the engaging body and can move independently of the engaging body.
When the guide pin located on the other end side of the protruding guide portion of the two guide pins is guided by the other end side guide portion, the guide pin on the other end side sinks into the engagement body. For this reason, the engaged body is disengaged from the engaging body and can move independently of the engaging body.
Thereby, the engaging body and the engaged body can be disengaged by the movement of the closing surface material at an arbitrary position before the closing and opening positions by the closing surface material, and the closing surface material is braked by the braking device. Can be smoothly closed and opened without the addition.

In the braking device of the present invention, the rotating body is a driving rotating body screw-engaged with the spiral rod, a driven rotating body rotatable with respect to the spiral rod, and the driving rotating body with respect to the driven rotating body. A biasing member for biasing the driven body in a separating direction, wherein the resistor is configured to generate a resistance force against rotation of the driven rotor, and the rotor is configured to move in the axial direction of the spiral rod. According to the speed, the driving rotator is separated from the driven rotator by the urging force of the urging member, and the non-engaged state, and the driving rotator rotates the driven rotator against the urging force of the urging member. It is preferable to be configured to be switchable between an engaged state in which rotation is transmitted to the body.
According to such a configuration, when the driving rotating body and the driven rotating body are in the disengaged state, the closing face material can be smoothly moved without applying the resistance force of the resistor to the closing face material, and the axial direction of the spiral rod is When the driving rotator approaches the driven rotator in the engagement state according to the moving speed, the resistance of the resistor is applied to the closing face member, so that the movement of the closing face member can be braked.

  The fitting of the present invention includes a closing face material that can be arranged in an opening of a building, and the opening / closing brake device of the present invention described above, and one of the closing face material side and the opening side includes the second face. One braking device and the second braking device are attached, and the first braking device is configured such that the movement of the closing surface material in the closing direction is transmitted to the first spiral rod and the closed surface material side and the opening. The second braking device is configured to be able to engage with the other of the side and the opening side so that the movement of the closing surface in the opening direction is transmitted to the second spiral rod. Characterized in that it can be engaged with the other of the two.

  According to the fitting of the present invention, it is possible to configure a fitting capable of exhibiting the same operation and effect as the above-described opening / closing brake device of the present invention.

  A fitting according to the present invention includes a closing face material that can be arranged in an opening of a building, and the above-described braking device of the present invention, and one of the closing face material side and the opening side has the engaging body. Is attached, and the engaged body is attached to the other of the closing face material side and the opening side.

  According to the fitting of the present invention, it is possible to configure a fitting that can exhibit the same operation and effect as the above-described braking device of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the opening-and-closing braking device which can make installation space small, a braking device, and a fitting can be provided.

The appearance figure which shows the fittings concerning this embodiment. The perspective view showing the opening and closing brake device of the fitting concerning the embodiment. FIG. 2 is a perspective view showing first and second braking devices of the fitting according to the embodiment. Explanatory drawing which shows the engagement state of the clutch mechanism of the fitting which concerns on the said embodiment. Explanatory drawing which shows the 1st braking device of the fitting which concerns on the said embodiment. Explanatory drawing which shows the 2nd braking device and the 2nd transmission device of the fitting which concern on the said embodiment. Explanatory drawing which shows the braking operation | movement by the 1st braking device of the fittings which concerns on the said prevailing form. Explanatory drawing which shows the braking operation | movement by the 2nd braking device of the fittings which concerns on the said embodiment. Explanatory drawing which shows the catcher of the fittings concerning the modification of this invention.

[Configuration of the present 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 opens and closes an entrance provided in an opening of a building and separating an indoor space on one side and an outdoor space on the other side. There is provided a frame body 10 and two door bodies 20A and 20B (closed surface materials) that are slidably disposed in the frame body 10 in the left-right direction.

  The frame body 10 is framed by an upper frame 11, a lower frame 12, and left and right vertical frames 13. The door body 20A is framed by an upper frame 21A, a lower frame 22A, left and right vertical frames 23A, and a panel 24A. The door body 20B is framed by an upper frame 21B, a lower frame 22B, left and right vertical frames 23B, and panels 24B. An open / close braking device 30 is arranged between the upper frame 11 and the upper frame 21A.

  The opening / closing braking device 30 includes a first braking device 30A (damper) for braking the movement of the door body 20A in the closing direction X1, and a second braking device 30B (damper) for braking the movement of the door body 20A in the opening direction X2. (See FIG. 2). The first braking device 30A and the second braking device 30B are arranged to face each other in an axial direction X of a first spiral rod 31A and a second spiral rod 31B described later.

  As shown in FIGS. 2 to 5, the first braking device 30 </ b> A includes a first spiral rod 31 </ b> A, a first rotating body 32 </ b> A in which the first spiral rod 31 </ b> A is screw-movable in the axial direction X, A first resistor 33A that generates a resistance to the rotation of the rotator 32A, a first case 34A that houses the first rotator 32A and the first resistor 33A, and a first member attached to the first spiral rod 31A. A first catcher 35A as a united body, a strike 36 as a first engaged body with which the first catcher 35A is engaged, and a first guide body 37A for guiding the first catcher 35A in the axial direction X are provided. I have. The first case 34A and the first guide body 37A are arranged adjacent to each other in the axial direction X, and are attached to the outer frame 38A shown in FIG. As shown in FIG. 1, the outer frame 38 </ b> A is attached to the upper frame 11 closer to the door end side. The strike 36 has a base 361 attached to the end of the upper frame 21A on the door end side, and an engagement protrusion 362 projecting upward from the base 361.

  The first spiral rod 31A is formed so as to extend in the axial direction X along the opening and closing direction of the door body 20A, and includes a first driving rotating body 321A, a first driven rotating body 322A, a first coil spring 323A, and a first It is inserted through the case 34A. The screw pitch of the first spiral rod 31A is equal.

  The first rotating body 32A includes a first driving rotating body 321A screw-engaged with the first spiral rod 31A, a first driven rotating body 322A rotatable with respect to the first spiral rod 31A, and a first driving rotating body 321A. And a first coil spring 323A as a first urging member that urges the first driven rotator 322A in a separating direction along the axial direction X.

The first driving rotating body 321A and the first driven rotating body 322A are arranged so as to abut each other in the axial direction X of the first spiral rod 31A. The first coil spring 323A is arranged at the butting portion of the first driving rotating body 321A and the first driven rotating body 322A. The first resistor 33A is arranged around the first driven rotor 322A.
In FIG. 5, the first driving rotator 321A is located on the right side with respect to the first driven rotator 322A and the first resistor 33A, and the first catcher 35A and the first guide 37A are driven by the first driven rotator. It is located on the left side of the body 322A and the first resistor 33A.

  The first driving rotator 321A is formed in a cylindrical shape, is screw-engaged with the first spiral rod 31A, and has an end portion of the first driving rotator 321A (abutting portion with the first driven rotator 322A). Has an engaging tooth 40 (see FIG. 4) formed thereon, and a spring receiving portion formed on the outer peripheral surface. The first drive rotating body 321A is rotatably supported by the first case 34A in the axial direction X of the first spiral rod 31A.

  When the first spiral rod 31A moves in the axial direction X with respect to the first drive rotary body 321A, the first drive rotary body 321A rotates about the axis of the first spiral rod 31A. When the moving speed at which the first spiral rod 31A moves in the axial direction X increases, the first spiral rod 31A and the screw engaging portion (not shown) of the first driving rotating body 321A are increased in accordance with the moving speed. Is increased, and the first driving rotary body 321A moves closer to the first driven rotary body 322A against the elastic biasing force of the first coil spring 323A.

  As shown in FIG. 4, the engagement teeth 40 of the first driving rotator 321A project toward the first driven rotator 322A and are formed in a right-angled triangular shape. A plurality are arranged intermittently along the circumferential direction (rotation direction). The plurality of engagement teeth 40 are arranged at equal pitches. The engagement tooth 40 has a meshing tooth surface 41 and a non-meshing tooth surface 42. The meshing tooth surface 41 is a flat surface that extends along the axial direction X of the first spiral rod 31A and is orthogonal to the end surface of the first drive rotating body 321A. The non-meshed tooth surface 42 is inclined with respect to the axial direction X of the first spiral rod 31A and the end surface of the first drive rotating body 321A. A tooth tip 43 where the meshing tooth surface 41 and the non-meshing tooth surface 42 intersect is formed in a pointed shape.

For example, when the outer shape of the end face (butting end face) of the first driving rotary body 321A is about 14 mm, the number of the engagement teeth 40 may be set to 3 to 12.
Here, when the number of the engagement teeth 40 is set to a large value, the interval between the engagement teeth 40 becomes small, and the first drive rotation required for the engagement teeth 40 to mesh with the engagement teeth 50 described later. The amount of rotation of the body 321A can be reduced. Further, when the number of teeth of the engaging teeth 40 is set to be small, the circumferential width of the engaging teeth 40 can be formed large, and the strength of the engaging teeth 40 can be improved.

  The first driven rotary body 322A is formed in a cylindrical shape, the first spiral rod 31A is inserted movably in the axial direction X without screw engagement, and the end of the first driven rotary body 322A ( And an engaging tooth 50 (see FIG. 4) formed at a portion where the first driving rotary body 321A abuts. The first driven rotating body 322A is arranged rotatably about the axis of the first spiral rod 31A, and is supported by the receiving member 39A in the axial direction X.

The engagement teeth 50 of the first driven rotating body 322A are formed in a right-angled triangular shape protruding toward the first driven rotating body 321A, and are formed on the end face of the first driven rotating body 322A in the circumferential direction (rotation direction). Along the line intermittently. The plurality of engagement teeth 50 are arranged at equal pitches. As shown in FIG. 4, the engaging teeth 50 have a meshing tooth surface 51 and a non-meshing tooth surface 52. The meshing tooth surface 41 is a flat surface extending along the axial direction X of the first spiral rod 31A and orthogonal to the end surface of the first driven rotary body 322A. The non-meshing tooth surface 52 is inclined with respect to the axial direction X of the first spiral rod 31A and the end surface of the first driven rotary body 322A. The tooth tip 53 where the meshing tooth surface 51 and the non-meshing tooth surface 52 intersect is formed in a pointed shape.
The engagement teeth 50 of the first driven rotating body 322A are longer than the engagement teeth 40 of the first driven rotating body 321A. The pitch of the plurality of engaging teeth 40 is equal to the pitch of the plurality of engaging teeth 50. Therefore, the number of teeth of the engagement teeth 40 and 50 is equal to each other.
Further, the setting of at least one engaging tooth 50 of the plurality of engaging teeth 50 may be different from the setting of other engaging teeth 50, for example, one of the engaging teeth 50. Only the tooth height may be higher than the tooth height of the other engagement teeth 50. In this case, a collision with the engagement teeth 40 can occur only in one of the engagement teeth 50 having a high tooth height, so that a more stable engagement operation can be performed.

For example, when the outer diameter of the end face of the first driven rotary body 322A (the end face on the abutting side with respect to the first drive rotary body 321A) is about 14 mm, the number of teeth of the engagement teeth 50 is set to 3 to 12. Good.
Here, when the number of the engagement teeth 50 is set to be large, the interval between the engagement teeth 50 becomes small, and the first drive rotor 321A required for the engagement teeth 50 to mesh with the engagement teeth 40 is formed. Rotation amount can be reduced. Further, when the number of teeth of the engaging teeth 50 is set to be small, the circumferential width of the engaging teeth 50 can be increased, and the strength of the engaging teeth 50 can be improved.

  In addition, even if the meshing tooth surfaces 41 and 51 are inclined within the range of the construction error with respect to the axial direction X of the first spiral rod 31A, the meshing tooth surfaces 41 and 51 fall within the range arranged along the axial direction X of the first spiral rod 31A. And Also, the tooth tips 43 and 53 are within the above-mentioned pointed range even if they are R-shaped within the range of the processing error.

Since the tooth tips 43 and 53 are each formed in a pointed shape, the first driving rotating body 321A in the non-engaged state approaches and engages with the first driven rotating body 322A as shown in FIG. In this case, the collision of the tooth tips 43 and 53 can be suppressed, and the meshing tooth surfaces 41 and 51 can smoothly mesh as shown in FIG.
Further, since the meshing tooth surfaces 41 and 51 are formed along the axial direction X of the first spiral rod 31A, the rotation of the first driving rotary body 321A about the first spiral rod 31A is controlled by the first driven rotary body. When the rotation is transmitted to 322A, a force in a direction in which the meshing tooth surfaces 41 and 51 are disengaged (a force in a direction in which the first driving rotating body 321A separates from the first driven rotating body 322A) does not occur. For this reason, the engagement state between the first driving rotator 321A and the first driven rotator 322A can be maintained.
Further, even when the first driving rotator 321A and the first driven rotator 322A are engaged, the tip 43 of the engaging tooth 40 of the first driving rotator 321A does not contact the end face of the first driven rotator 322A. Therefore, the tooth tip 43 is not crushed and deformed. For this reason, for example, when the tooth tip 43 is deformed due to a collision, the tooth tip 43 may interfere with the surrounding configuration when the first driving rotating body 321A rotates, but in the present embodiment, as described above, the tooth tip 43 Since the 43 is not deformed by the collision, even when the first driving rotary body 321A rotates, the tooth tip 43 does not interfere with the surrounding configuration, and the smooth rotation of the first driving rotary body 321A can be maintained.

As shown in FIG. 3, the first coil spring 323A is disposed between the spring receiving portion of the first driving rotating body 321A and the first case 34A, and is provided around the engaging teeth 40 and 50. . The first coil spring 323A elastically urges the first driving rotary body 321A in a direction away from the first driven rotary body 322A in the axial direction X (the same direction as the opening direction X2). The separated state between the body 321A and the first driven rotary body 322A is maintained.
A clutch mechanism is constituted by the first driving rotating body 321A, the first driven rotating body 322A, and the first coil spring 323A. In this clutch mechanism, when the separated state between the first driving rotator 321A and the first driven rotator 322A is maintained by the first coil spring 323A, the first driven rotator 321A switches to the first driven rotator 322A. In the engaged state where the rotation is not transmitted, and when the first driving rotator 321A is engaged with the first driven rotator 322A, the engagement is transmitted from the first driving rotator 321A to the first driven rotator 322A. State. In this engaged state, the first driven rotary body 322A is rotated with respect to the first case 34A, thereby generating a frictional resistance.

  As shown in FIGS. 3 and 5, the first case 34A houses a first driving rotator 321A and a first driven rotator 322A. The first case 34A holds the first driving rotator 321A so as to be able to approach and separate from the first driven rotator 322A and is rotatable, and holds the first driven rotator 322A stationary in the axial direction X. It is held rotatably.

Further, a first rod insertion hole 341A and a first rod accommodation hole 342A are formed in the first case 34A along the axial direction X.
The first rod insertion hole 341A is arranged side by side in the axial direction X with the first driving rotating body 321A and the first driven rotating body 322A. The first spiral rod 31A is inserted into the first rod insertion hole 341A.
The first rod accommodation hole 342A is arranged at a position different from the first rod insertion hole 341A in a direction orthogonal to the axial direction X, in the present embodiment, in the expected direction of the upper frame 11. The first rod accommodation hole 342A is arranged in the axial direction X with a second rod insertion hole 341B described later, and is configured to accommodate a second spiral rod 31B described later.

  In the present embodiment, the first resistor 33A is formed by a portion of the first case 34A that is located around the first driven rotor 322A. A split groove 331 is formed in the first resistor 33A, and an adjusting screw 332 for adjusting the inner diameter is attached to both sides of the split groove 331. The first resistor is adjusted by tightening the adjusting screw 332. The contact pressure of 33A with respect to the first driven rotating body 322A is adjustable. By adjusting the contact pressure, the frictional force with the first resistor 33A generated by the rotation of the first driven rotor 322A can be adjusted.

  As shown in FIG. 5, the first catcher 35 </ b> A includes a catcher main body 351 (engaging body main body), protruding and retracting members 352 and 353 attached to the catcher main body 351, and guide pins formed on the protruding and retracting members 352 and 353. 354, 355.

  In the catcher main body 351, two receiving holes are formed along the direction perpendicular to the axial direction X, that is, in the present embodiment, in the direction in which the upper frame 11 is projected. Members 352 and 353 are arranged, respectively. The catcher main body 351 is formed with guide grooves 358 and 359 that are continuous with the two receiving holes, respectively, and guide pins 354 and 355 are arranged in these guide grooves 358 and 359.

The catcher body 351 has two rod mounting holes 356 and 357 formed therein. The rod mounting holes 356 and 357 are arranged at positions different from each other in a direction orthogonal to the axial direction X, that is, in the present embodiment, in the expected direction of the upper frame 11.
The end of the first spiral rod 31A, which is inserted into the first rod insertion hole 341A, on the door end side is attached to the rod attachment hole 356.
The rod attachment hole 357 is located on an extension of the second spiral rod 31B accommodated in the first rod accommodation hole 342A.

The retractable members 352 and 353 are arranged at intervals in the axial direction X at which the engagement protrusions 362 of the strike 36 can be arranged. The retractable member 352 is disposed on the doortip side with respect to the retractable member 353.
The guide pins 354 and 355 protrude from both the upper side surface and the lower side surface of the retractable members 352 and 353, and are disposed in both the upper guide grooves 358 and 359 and the lower guide grooves 358 and 359 of the catcher body 351. Have been. The guide pins 354 and 355 make the projecting members 352 and 353 protrude from the catcher main body 351 by being guided by the guide grooves 358 and 359 of the catcher main body 351, and immerse into the catcher main body 351.

  The first guide body 37A is constituted by a pair of guide plates 371 and 372 which sandwich the catcher main body 351 in the direction in which the upper frame 11 is found, and are arranged on the door tip side with respect to the receiving member 39A. First guide grooves 373A in which guide pins 354, 355 of the first catcher 35A are arranged are formed in the guide plates 371, 372, respectively.

  The first guide groove 373A includes a protruding guide portion 374 for guiding the guide pins 354 and 355 in a state where the two retractable members 352 and 353 protrude, and a door-side guide at an end of the protruding guide portion 374 on the closing direction X1 side. It is constituted by a closed guide portion 375 for guiding the pin 354 in the immersion direction, and an open guide portion 376 for guiding the guide pin 355 on the door end side in the immersion direction at the end of the protruding guide portion 374 on the opening direction X2 side. ing.

  The protruding guide portion 374 is formed along the axial direction X. The closed-side guide portion 375 is obliquely inclined with respect to the axial direction X such that the end on the door end side is located closer to the bottom side of the accommodation hole of the catcher body 351 than the protruding guide portion 374. The open-side guide portion 376 is obliquely inclined with respect to the axial direction X such that the end on the door end side is located closer to the bottom of the accommodation hole of the catcher body 351 than the protruding guide portion 374.

  As shown in FIG. 2 to FIG. 4 and FIG. 6, the second braking device 30 </ b> B includes a second spiral rod 31 </ b> B and a second rotating body 32 </ b> B in which the second spiral rod 31 </ b> B is screw-movable in the axial direction X. A second resistor 33B that generates a resistance to the rotation of the second rotating body 32B, a second case 34B that houses the second rotating body 32B and the second resistor 33B, and a second spiral rod 31B. A second catcher 35B as a second engaging body, the above-mentioned strike 36 as a second engaged body with which the second catcher 35B is engaged, and a second guide body for guiding the second catcher 35B in the axial direction X 37B. The strike 36 is shared with the first engaged body in the present embodiment. The second case 34B and the second guide body 37B are arranged adjacent to each other in the axial direction X, and are attached to the outer frame 38B shown in FIG. The outer frame 38B is arranged adjacent to the right side of the outer frame 38A in the axial direction X, as shown in FIG.

The second spiral rod 31B is formed similarly to the first spiral rod 31A. The second catcher 35B is formed in the same manner as the first catcher 35A, and is arranged left and right opposite in the axial direction X.
The rod mounting hole 356 of the second catcher 35B is located on an extension of the first spiral rod 31A housed in the second rod housing hole 342B. To the rod mounting hole 357 of the second catcher 35B, the end on the door end side of the second spiral rod 31B inserted through the second rod insertion hole 341B is mounted.

  The second rotating body 32B includes a second driving rotating body 321B screw-engaged with the second spiral rod 31B, a second driven rotating body 322B rotatable with respect to the second spiral rod 31B, and a second driving rotating body 321B. And a second coil spring 323B as a second urging member that urges the second driven rotator 322B in the separating direction along the axial direction X. The second driving rotator 321B, the second driven rotator 322B, and the second coil spring 323B are formed in the same manner as the first driving rotator 321A, the first driven rotator 322A, and the first coil spring 323A. It is arranged left and right reversed.

  As shown in FIGS. 3 and 6, the second case 34B accommodates a second driving rotator 321B and a second driven rotator 322B. The second case 34B holds the second driving rotator 321B so that it can approach and separate from the second driven rotator 322B and is rotatable. The second driven rotator 322B is stationary in the axial direction X. It is held rotatably.

Further, a second rod insertion hole 341B and a second rod accommodation hole 342B are formed in the second case 34B along the axial direction X.
The second rod insertion hole 341B is arranged side by side in the axial direction X with the second driving rotating body 321B and the second driven rotating body 322B. The second spiral rod 31B is inserted into the second rod insertion hole 341B.
The second rod accommodation hole 342B is arranged at a position different from the second rod insertion hole 341B in a direction perpendicular to the axial direction X, in the present embodiment, in a possible direction of the upper frame 11. The second rod accommodation hole 342B is arranged side by side in the axial direction X with the first rod insertion hole 341A, and is configured to accommodate the first spiral rod 31A.

  In the present embodiment, the second resistor 33B is formed by a portion of the second case 34B located around the second driven rotary body 322B. The second resistor 33B has the same configuration as the first resistor 33A, and adjusts the frictional force between the second resistor 33B and the second resistor 33B generated by the rotation of the second driven rotor 322B by adjusting the tightening of the adjusting screw 332. it can.

  The second guide body 37B is constituted by a pair of guide plates 371 and 372 positioned so as to sandwich the catcher body 351 of the second catcher 35B in the direction in which the upper frame 11 is found, and moves the second driven rotary body 322B in the axial direction X. Is disposed on the door bottom side with respect to the receiving member 39B. The guide plate 372 has second guide grooves 373B in which the guide pins 354 and 355 of the second catcher 35B are arranged.

The second braking device 30B is formed in substantially the same manner as the first braking device 30A, but is entirely disposed in the left-right opposite direction, and the second case 34B is the same as the first case 34A and the upper frame 11. The arrangement is different from that of the first braking device 30A in that the door end of the second spiral rod 31B on the door end side is attached to the rod attachment hole 357 of the second catcher 35B. ing.
For this reason, the first spiral rod 31A and the second spiral rod 31B are arranged at different positions in a direction orthogonal to the axial direction X.

[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.

[Close operation]
First, the closing operation of the sliding door 1 will be described. For convenience of explanation, the outer frames 38A and 38B and the guide plate 371 are not shown in FIG.
As shown in FIG. 7A, in a state where the strike 36 is located closer to the door end than the first catcher 35A, the first catcher 35A is arranged at a standby position on the door end side with respect to the first guide body 37A. ing. The projecting member 352 on the door end side of the first catcher 35A is in a state where the guide pin 354 is located at a continuous portion between the projecting guide portion 374 and the open side guide portion 376 and protrudes from the catcher main body 351. In addition, the retractable member 353 on the door end side of the first catcher 35A is in a state where the guide pin 355 is located in the open-side guide portion 376 and is immersed in the catcher body 351.

When the door body 20A is manually operated to close and move in the closing direction X1 toward the vertical frame 13 on the door tip side, the strike 36 approaches the first catcher 35A, and the engagement protrusion 362 is moved to the retractable member 352 on the door tip side. Abut.
Subsequently, the closing movement of the door body 20A causes the first catcher 35A to move in the closing direction X1, and the guide pin 355 is guided by the open side guide portion 376, so that the door end side projecting member 353 projects from the catcher body 351. As shown in FIG. 7B, the engagement state is such that the engagement protrusion 362 is sandwiched between the retractable member 352 on the door end side.

  The first spiral rod 31A is pulled by the first catcher 35A and moves in the closing direction X1. At this time, the portion of the first spiral rod 31A that has been housed in the second rod housing hole 342B is extracted from the second rod housing hole 342B.

In the closing movement of the door body 20A described above, the first braking device 30A of the opening / closing braking device 30 operates as follows.
When the first spiral rod 31A moves in the closing direction X1 at a moving speed of, for example, less than 200 to 300 mm / S by the closing movement of the door body 20A, the first driving rotary body screw-engaged with the first spiral rod 31A. 321A rotates. At this time, a moving force in the approaching direction toward the first driven rotating body 322A is applied to the first driven rotating body 321A, but the first driving rotating body 321A is separated from the first driven rotating body 322A by the first coil spring 323A. The disengaged state (see FIG. 4 (A)) is maintained, the rotation is not transmitted from the first driving rotator 321A to the first driven rotator 322A, and the first driven rotator 322A is in contact with the first resistor 33A. Do not rotate. Therefore, no frictional resistance is generated between the first driven rotary body 322A and the first resistor 33A, and the door body 20A smoothly closes and moves.

  Next, when the moving speed of the door body 20A in the closing direction X1 increases to, for example, 200 to 300 / S or more, the moving force of the first driving rotating body 321A in the approaching direction to the first driven rotating body 322A increases. Then, the first driving rotary body 321A approaches the first driven rotary body 322A against the elastic biasing force of the first coil spring 323A, and is brought into the engaged state (see FIG. 4B) in which the first driven rotary body 321A is engaged so as to transmit the rotation. The rotation is transmitted from the first driving rotating body 321A to the first driven rotating body 322A, and the first driven rotating body 322A rotates with respect to the first resistor 33A. Therefore, a frictional resistance is generated between the first driven rotating body 322A and the first resistor 33A and is applied to the first spiral rod 31A, so that the closing movement of the door 20A is braked, and the door 20A moves in the closing direction X1. Decelerates and then stops. In a state where the door body 20A is stopped, the first driving rotating body 321A is moved away from the first driven rotating body 322A by the elastic biasing force of the first coil spring 323A, so that the engagement with the first driven rotating body 322A is released. Is done.

  When the door body 20A is further moved in the closing direction X1, the guide pin 354 is guided by the closing side guide portion 375 and starts to enter. When the door body 20 </ b> A reaches a position (immediately before position) before the close-off position, the retractable member 352 on the door end side is completely immersed in the catcher main body 351. 7C, the engagement between the strike 36 and the first catcher 35A is released, and the braking of the first braking device 30A is applied to the door body 20A that moves closed. It will not be added. For this reason, the door body 20A can be smoothly closed to the vertical frame 13 on the door tip side. In addition, in the state where the retractable member 352 on the door end side is retracted, the retractable member 353 on the door end side has the guide pin 355 located at a continuous portion between the protruding guide portion 374 and the closed-side guide portion 375 so that the catcher main body 351 can be moved. It is in a protruding state.

  As described above, the opening / closing braking device 30 operates the first braking device 30A during the closing movement of the door body 20A, and performs the braking operation according to the moving speed of the door body 20A in the closing direction X1.

  If the moving speed decreases during the closing movement of the door body 20A and the moving force of the first drive rotating body 321A approaching the first driven rotating body 322A is lower than the elastic biasing force of the first coil spring 323A, Since the one driving rotary body 321A is separated from the first driven rotary body 322A by the first coil spring 323A and is disengaged, there is no braking force against the closing movement of the door 20A, and the closing movement operation can be performed with a small force.

[Open operation]
Next, the opening operation of the sliding door 1 will be described. For convenience of description, the outer frames 38A and 38B and the guide plate 371 are not shown in FIG.
When the door body 20A is moved in the opening direction X2 from the position (closed position) shown in FIG. 7C toward the door bottom side by operation, the strike 36 hits the projecting member 353 on the door bottom side, and the first catcher 35A is moved. The first spiral rod 31A is moved in the opening direction X2, and this movement causes the first spiral rod 31A to start being housed in the second rod housing hole 342B. In addition, the guide pin 354 is guided by the closing-side guide portion 375, and the door-side retractable member 352 projects from the catcher body 351. The strike 36 is sandwiched between the door-side retractable member 353 and the door-side retractable member 353. State.

  Here, even if the first spiral rod 31A is pushed in the opening direction X2 by the first catcher 35A, only the moving force in the direction away from the first driven rotating body 322A is applied to the first driving rotating body 321A. No frictional resistance is generated between the one driven rotating body 322A and the first resistor 33A, the first spiral rod 31A can be moved in the opening direction X2 with a light force, and the door body 20A can be smoothly opened and moved.

  When the door body 20A is further moved in the opening direction X2, the guide pin 355 is guided by the open side guide portion 376 through the state shown in FIG. 7B, and the projecting member 353 on the side of the door assembles into the catcher body 351. As shown in FIG. 7A, the engagement state of the first catcher 35A and the strike 36 is released, and the strike 36 can move in the opening direction X2 without interlocking with the first spiral rod 31A. In addition, in the state shown in FIG. 7A, the first catcher 35A is in a state of being arranged at a standby position close to the first case 34A.

When the door body 20A further moves from the position shown in FIG. 7A in the opening direction X2, as shown in FIG. 8A, the strike 36 approaches the second catcher 35B, and the engagement protrusion 362 becomes the door bottom. Abuts on the side retractable member 353. Here, the second catcher 35B is disposed at a standby position on the door end side with respect to the second guide body 37B, and the guide pin 354 is located at the closed side guide portion 375 and is immersed in the catcher body 351. The guide pin 355 is located at a continuous portion between the closing-side guide portion 375 and the protruding guide portion 374, and is in a state of protruding from the catcher main body 351.
Subsequently, with the opening movement of the door body 20A, the second catcher 35B moves in the opening direction X2, and the guide pin 354 is guided by the closing-side guide portion 375, so that the door-end side retractable member 352 projects from the catcher main body 351. As shown in FIG. 8B, the engagement state is such that the engagement protrusion 362 is sandwiched between the protrusion member 353 on the side of the door end.

  The second spiral rod 31B is pulled by the second catcher 35B and moves in the opening direction X2. At this time, the portion of the second spiral rod 31B that has been housed in the first rod housing hole 342A is extracted from the first rod housing hole 342A.

In the opening movement of the door body 20A described above, the second braking device 30B of the opening / closing braking device 30 operates as follows.
When the second spiral rod 31B moves in the opening direction X2 at a moving speed of, for example, less than 200 to 300 mm / S by the opening movement of the door body 20A, the second driving rotator screw-engaged with the second spiral rod 31B. 321B rotates. At this time, a moving force in the approaching direction toward the second driven rotator 322B is applied to the second drive rotator 321B, but the second coil 323B separates the second drive rotator 321B from the second driven rotator 322B. The disengaged state is maintained, the rotation is not transmitted from the second driving rotator 321B to the second driven rotator 322B, and the second driven rotator 322B does not rotate with respect to the second resistor 33B. Therefore, no frictional resistance is generated between the second driven rotating body 322B and the second resistor 33B, and the door body 20A smoothly opens and moves.

  Next, when the moving speed of the door body 20A in the opening direction X2 increases to, for example, 200 to 300 / S or more, the moving force of the second drive rotating body 321B in the approach direction to the second driven rotating body 322B increases. The second driving rotator 321B approaches the second driven rotator 322B against the elastic biasing force of the second coil spring 323B, and is engaged so as to transmit the rotation. The rotation is transmitted to the second driven rotating body 322B, and the second driven rotating body 322B rotates with respect to the second resistor 33B. Accordingly, a frictional resistance is generated between the second driven rotary body 322B and the second resistor 33B and is applied to the second spiral rod 31B, so that the opening movement of the door 20A is braked and the opening movement X2 of the door 20A in the opening direction X2. Movement is slowed down and then stopped. In the state where the door body 20A is stopped, the second driving rotator 321B moves in the direction away from the second driven rotator 322B by the elastic biasing force of the second coil spring 323B, so that the engagement with the second driven rotator 322B is stopped. It is released.

  When the door body 20A is further moved in the opening direction X2, the guide pin 355 is guided by the opening side guide portion 376 and starts to enter. When the door body 20 </ b> A reaches the position just before the open position (the position immediately before), the retractable member 353 on the door bottom side is completely immersed in the catcher main body 351. 8C, the engagement state between the strike 36 and the second catcher 35B is released, and the braking of the second braking device 30B is applied to the door body 20A that opens and moves. It will not be added. For this reason, the door body 20 </ b> A can be smoothly opened by completely contacting the vertical frame 13 on the door tip side. In addition, in the state where the retractable member 353 on the side of the door is immersed, the retractable member 352 on the doorside side has the guide pin 354 positioned at a continuous portion between the protruding guide portion 374 and the open side guide portion 376, and is moved from the catcher body 351. It is in a protruding state.

  Thus, the opening / closing braking device 30 operates the second braking device 30B during the opening movement of the door body 20A, and performs a braking operation according to the moving speed of the door body 20A in the opening direction X2.

  If the moving speed decreases during the opening movement of the door body 20A and the moving force of the second driving rotator 321B approaching the second driven rotator 322B is lower than the elastic urging force of the second coil spring 323B, The two-drive rotator 321B has no braking force against the opening movement of the second coil spring 323B, and can perform the opening movement operation with a small force.

[Close operation]
Next, the closing operation of the sliding door 1 will be described.
When the door body 20A is moved in the closing direction X1 from the position (open position) shown in FIG. 8C (open position) toward the door tip side by operation, the strike 36 hits the emergence member 352 on the door tip side, and the second catcher 35B is moved. The second spiral rod 31B is moved in the closing direction X1, and starts to be accommodated in the first rod accommodation hole 342A by this movement. In addition, the guide pin 355 is guided by the open-side guide portion 376, and the retractable member 353 on the door end projects from the catcher main body 351, and the strike 36 is sandwiched between the retractable member 352 on the door end side. State.

  Here, even if the second spiral rod 31B is pushed in the closing direction X1 by the second catcher 35B, only the moving force in the direction away from the second driven rotary body 322B is applied to the second drive rotary body 321B. No frictional resistance is generated between the two driven rotating bodies 322B and the second resistor 33B, the second spiral rod 31B can be moved in the closing direction X1 with a light force, and the door body 20A can be smoothly closed and moved.

  When the door body 20A is further moved in the closing direction X1, the guide pin 354 is guided by the closing side guide portion 375 through the state shown in FIG. As shown in FIG. 8A, the engagement state between the second catcher 35B and the strike 36 is released, and the strike 36 can move in the closing direction X1 without interlocking with the second spiral rod 31B. In the state shown in FIG. 8A, the second catcher 35B is in a state of being arranged at a standby position close to the second case 34B. When the door body 20A further moves in the closing direction X1 from the state shown in FIG. 8A, the sliding door 1 performs the above-described closing operation.

[Effects of the present embodiment]
(1) According to the present embodiment, the opening / closing braking device 30 includes a first braking device 30A that brakes the movement of the door body 20A in the closing direction X1 and a second braking device that brakes the movement of the door body 20A in the opening direction X2. The first braking device 30A includes a first spiral rod 31A, a first rotary body 32A in which the first spiral rod 31A is screw-engaged movably in the axial direction X, and a first rotary body 32A. The second braking device 30B includes a first resistor 33A that generates a resistance to rotation, and the second braking device 30B includes a second spiral rod 31B and a second rotation in which the second spiral rod 31B is screw-engaged movably in the axial direction X. The first braking device 30A and the second braking device 30B include a body 32B and a second resistor 33B that generates a resistance to the rotation of the second rotating body 32B. Pairaruroddo 31B are arranged opposite each other in the axial direction X of the first spiral rod 31A and the second spiral rod 31B is characterized by being arranged at different positions in the direction perpendicular to the axial direction X.
With the above configuration, even if the first braking device 30A and the second braking device 30B are arranged close to each other in the axial direction X, the first spiral rod 31A and the second spiral rod 31B are not located coaxially. Can be arranged without interfering with each other. For this reason, the length of the portion of the first spiral rod 31A that protrudes from the first rotating body 32A toward the second braking device 30B, and the length of the second spiral rod 31B from the second rotating body 32B to the first braking device 30A. It is not necessary to form an interval corresponding to the longer one of the lengths of the portion protruding to the side between the first braking device 30A and the second braking device 30B. The installation space of the opening / closing brake device 30 can be reduced by reducing the length dimension of the device 30 in the axial direction X.
Further, in the present embodiment, the following effects can be exhibited.
(2) In the above embodiment, the first rotating body 32A includes the first driving rotating body 321A screw-engaged with the first spiral rod 31A, and the first driven rotating body 322A rotatable with respect to the first spiral rod 31A. And a first coil spring 323A that urges the first driving rotator 321A in a direction away from the first driven rotator 322A. The first resistor 33A is adapted to rotate with respect to the rotation of the first driven rotator 322A. The first rotary body 32A is configured to generate a resistance force, and the first coil spring 323A is moved in accordance with the moving speed of the first spiral rod 31A that moves in the axial direction X based on the movement of the door body 20A in the closing direction X1. The first driving rotator 321A is disengaged from the first driven rotator 322A by the urging force of the first driven rotator 322A, and the first driving rotator 321A is pressed against the urging force of the first coil spring 323A. The second rotating body 32B is configured to be switchable between an engaged state engaged with the driven rotating body 322A so as to be able to transmit rotation, and the second rotating body 32B is screw-engaged with the second spiral rod 31B; A second driven rotary body 322B rotatable with respect to the spiral rod 31B; and a second coil spring 323B for urging the second drive rotary body 321B in a direction away from the second driven rotary body 322B, and a second resistance. The body 33B is configured to generate a resistance to the rotation of the second driven rotating body 322B, and the second rotating body 32B moves in the axial direction X based on the movement of the door body 20A in the opening direction X2. In accordance with the moving speed of the two spiral rods 31B in the axial direction X, the non-engaged state in which the second driving rotary body 321B is separated from the second driven rotary body 322B by the urging force of the second coil spring 323B, The second drive rotor 321B is configured to be switched between engagement engagement rotatably transmitted to the second driven rotating body 322B against the urging force of the two coil springs 323B.
For this reason, when the first spiral rod 31A moves in the axial direction X by the movement of the door body 20A in the closing direction X1, the first drive rotating body 321A rotates while the first coil spring 323A rotates by the movement of the first spiral rod 31A. Approach the first driven rotating body 322A against the urging force of the first driven rotating body 322A. Even when approaching in this way, while the first driving rotator 321A is in a disengaged state with the first driven rotator 322A, the rotation is not transmitted from the first driving rotator 321A to the first driven rotator 322A. The resistance of the first resistor 33A to the rotation of the first driven rotor 322A is not generated. Thereby, the door body 20A can be smoothly moved in the closing direction X1 without applying the resistance force of the first resistor 33A to the door body 20A.
When the moving speed of the first spiral rod 31A in the axial direction X due to the movement of the door body 20A in the closing direction X1 increases, the first driving rotating body 321A approaches the first driven rotating body 322A to be in the engaged state, The rotation of the first driving rotator 321A is transmitted to the first driven rotator 322A. Accordingly, the first driven rotating body 322A rotates to generate a resistance force on the first resistor 33A, and the resistance of the first resistor 33A is applied to the door body 20A, so that the door body 20A moves in the closing direction X1. Can brake.
When the second spiral rod 31B moves in the axial direction X due to the movement of the door body 20A in the opening direction X2, the second drive rotating body 321B rotates the second coil spring 323B while rotating by the movement of the second spiral rod 31B. It approaches the second driven rotary body 322B against the urging force. Even when approaching in this way, while the second driving rotator 321B is in a disengaged state with the second driven rotator 322B, the rotation is not transmitted from the second driving rotator 321B to the second driven rotator 322B. The resistance of the second resistor 33B to the rotation of the second driven rotor 322B is not generated. Thereby, the door body 20A can be smoothly moved in the opening direction X2 without applying the resistance of the second resistor 33B to the door body 20A.
When the moving speed of the second spiral rod 31B in the axial direction X due to the movement of the door body 20A in the opening direction X2 increases, the second driving rotator 321B approaches the second driven rotator 322B to be engaged, The rotation of the second driving rotator 321B is transmitted to the second driven rotator 322B. As a result, the second driven rotating body 322B rotates to generate a resistance force on the second resistor 33B, and the resistance of the second resistor 33B is applied to the door body 20A, so that the door body 20A moves in the opening direction X2. Can brake.
(3) In the embodiment, the first braking device 30A includes the first case 34A that accommodates the first rotating body 32A and the first resistor 33A, and the second braking device 30B includes the second rotating body 32B and the second rotating body 32B. The first case 34A includes a first rod insertion hole 341A into which the first spiral rod 31A is inserted, and a first rod capable of accommodating the second spiral rod 31B. An accommodation hole 342A is formed, and a second rod insertion hole 341B into which the second spiral rod 31B is inserted and a second rod accommodation hole 342B capable of accommodating the first spiral rod 31A are formed in the second case 34B. Have been.
Therefore, when the first spiral rod 31A inserted in the first rod insertion hole 341A moves in the axial direction X, the first spiral rod 31A can be accommodated in the second rod accommodation hole 342B, and the second rod 31A can be accommodated in the second rod accommodation hole 342B. When the second spiral rod 31B inserted in the insertion hole 341B moves in the axial direction X, the second spiral rod 31B can be accommodated in the first rod accommodation hole 342A.
Since the first case 34A includes the first rod insertion hole 341A and the first rod accommodation hole 342A, while the second case 34B includes the second rod insertion hole 341B and the second rod accommodation hole 342B, the first case 34A Also, the compatibility of the second case 34B can be improved, and the manufacturing cost can be reduced by using common components.
(4) In the embodiment, the first braking device 30A includes the first catcher 35A attached to the first spiral rod 31A and the strike 36 with which the first catcher 35A is engaged, and the second braking device 30B is , A second catcher 35B attached to the second spiral rod 31B, and a strike 36 with which the second catcher 35B is engaged. The first catcher 35A moves the strike 36 in the engagement state with the strike 36 in the second direction. The second catcher 35B is configured to transmit the movement of the strike 36 to the second spiral rod 31B in an engagement state with the strike 36.
Therefore, when the first body 20A is moved in the closing direction X1 with the first catcher 35A and the second catcher 35B attached to the upper frame 11 on the opening side of the building and the strike 36 attached to the upper frame 21A. , The first catcher 35A can be engaged with the strike 36, so that the braking by the first braking device 30A can be transmitted to the door body 20A. Further, when the door body 20A is moved in the opening direction X2, the second catcher 35B can be engaged with the strike 36, and the braking by the second braking device 30B can be transmitted to the door body 20A.
(5) In the above-described embodiment, the first catcher 35A is configured to transmit the moving force of the strike 36 to the first spiral rod 31A as the tensile force in the axial direction X in the engagement state with the strike 36, and the second catcher 35A 35B is configured to transmit the moving force of the strike 36 to the second spiral rod 31B as a tensile force in the axial direction X in an engaged state with the strike 36.
Therefore, when a tensile force in the axial direction X is applied to the first spiral rod 31A from the first catcher 35A, the first spiral rod 31A is not compressed in the axial direction X, and the first spiral rod 31A is not compressed. Even if the braking force of the first braking device 30A is generated by the 31A being pulled in the axial direction X, buckling of the first spiral rod 31A can be prevented.
Further, when a tensile force in the axial direction X is applied to the second spiral rod 31B from the second catcher 35B, the second spiral rod 31B is not compressed in the axial direction X, and the second spiral rod 31B is not compressed. Even if the braking force of the second braking device 30B is generated by pulling in the axial direction X, the buckling of the second spiral rod 31B can be prevented.
(6) In the embodiment, two rod mounting holes 356 and 357 formed at different positions in the direction orthogonal to the axial direction X are formed in each of the first catcher 35A and the second catcher 35B. .
For this reason, by attaching the first spiral rod 31A to one of the two rod attachment holes 356, 357 of the first catcher 35A, the position in the direction orthogonal to the axial direction X of the first spiral rod 31A can be changed from the two positions. You can choose. Further, by attaching the second spiral rod 31B to one of the two rod attachment holes 356, 357 of the second catcher 35B, the position in the direction orthogonal to the axial direction X of the second spiral rod 31B is selected from the two positions. it can. As described above, since the two rod mounting holes 356 and 357 are formed in the first catcher 35A and the second catcher 35B, the compatibility between the first catcher 35A and the second catcher 35B can be improved, and the manufacturing cost can be reduced. Can be reduced by common use.
(7) In the above embodiment, the first braking device 30A includes the first guide body 37A that guides the first catcher 35A in the axial direction X, and the second braking device 30B includes the second catcher 35B using the shaft. The first catcher 35A and the second catcher 35B are provided with a second guide body 37B that guides along the direction X. The first catcher 35A and the second catcher 35B include two catch members 352 and 353 that can appear and disappear with respect to the catcher body 351. The first guide body 37A has a first guide groove 373A for guiding the two guide pins 354, 355 of the first catcher 35A. The two guide pins 354 and 355 of the second catcher 35B are guided by the second guide body 37B. A second guide groove 373B is formed, and the first guide groove 373A and the second guide groove 373B are provided with a projecting guide portion 374 that guides the two guide pins 354 and 355 with the two projecting members 352 and 353 projecting. At the end on the closing direction X1 side of the protruding guide portion 374, a closing side guide portion 375 that guides the guide pin 354 located on the closing direction X1 side of the two guide pins 354 and 355 in the immersion direction, and the protruding guide portion 374 Each of the two guide pins 354 and 355 at the end on the opening direction X2 side includes an opening-side guide portion 376 that guides the guide pin 355 located on the opening direction X2 side in the immersion direction.
Therefore, in a state where the two guide pins 354 and 355 are guided by the protruding guide portion 374, the two retractable members 352 and 353 protrude from the catcher main body 351 and the strike 36 is sandwiched by the two retractable members 352 and 353. Thus, the engaged state can be maintained.
When the guide pin 354 of the two guide pins 354 and 355 located on the closing direction X1 side of the protruding guide portion 374 is guided by the closing side guide portion 375, the guide pin 354 sinks into the catcher main body 351. Therefore, the strike 36 is disengaged from the first catcher 35A (second catcher 35B), and can be moved in the closing direction X1.
When the guide pin 355 located on the opening direction X2 side of the protruding guide portion 374 of the two guide pins 354 and 355 is guided by the open side guide portion 376, the guide pin 355 enters the catcher main body 351. Therefore, the strike 36 is disengaged from the first catcher 35A (second catcher 35B), and can be moved in the opening direction X2.
Thereby, the engagement of the first catcher 35A and the strike 36 can be released by the movement of the door body 20A in the closing direction X1 at an arbitrary position before the closing position by the door body 20A, and the first braking is applied to the door body 20A. It can be closed smoothly without the braking by the device 30A. In addition, at an arbitrary position before the opening and closing position by the door body 20A, the engagement of the second catcher 35B and the strike 36 can be released by moving the door body 20A in the opening direction X2, and the second braking device is attached to the door body 20A. It can be opened smoothly without braking by 30B.
Further, it is not necessary to set the length of the opening / closing brake device 30 in the axial direction X to be large in accordance with the position where the door body 20A is closed or opened, and the length can be reduced, so that the installation of the opening / closing brake device 30 can be achieved. Space can be reduced.
(8) Since the first spiral rod 31A and the second spiral rod 31B are arranged at different positions in the expected direction of the upper frame 11, the first spiral rod 31A and the second spiral rod 31B are different from each other in the vertical direction. , The vertical dimension of the opening / closing brake device 30 can be reduced. For this reason, for example, the range in which the height of the door body 20A can be changed due to the adjustment of the door roller can be expanded.

[Modification]
The present invention is not limited to the configuration described in the above embodiment, and modifications within a range that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the outer frames 38A and 38B are attached to the upper frame 11 and the strike 36 is attached to the upper frame 21A. Conversely, the outer frames 38A and 38B are attached to the upper frame 21A. The strike 36 may be attached to the upper frame 11.

  In the prevailing mode, the first spiral rod 31A and the second spiral rod 31B are arranged at positions different from each other in the prospective direction of the upper frame 11, but the present invention is not limited to this. They may be arranged at different positions in the direction.

In the above embodiment, the first braking device 30A configures the clutch mechanism with the first driving rotary body 321A, the first driven rotary body 322A, and the first coil spring 323A, but is not limited thereto. For example, instead of these configurations, a rotation body that is screw-engaged with the first spiral rod 31A and has a one-way bearing is provided, and the rotation based on the movement of the first spiral rod 31A in the axial direction X toward the door tip side. The rotation of the body generates a frictional resistance between the first resistor 33A and the first spiral rod 31A, and the one-way bearing operates to move in the axial direction X toward the door end side of the first spiral rod 31A. It may be configured not to rotate.
In the second braking device 30B, the clutch mechanism is configured by the second driving rotating body 321B, the second driven rotating body 322B, and the second coil spring 323B, but is not limited thereto. For example, instead of these configurations, a rotation body which is screw-engaged with the second spiral rod 31B and has a one-way bearing is provided, and the rotation based on the movement of the second spiral rod 31B in the axial direction X toward the door end side is provided. The rotation of the body generates a frictional resistance with the second resistor 33B, and the one-way bearing operates to move the second spiral rod 31B toward the door end in the axial direction X, thereby causing the rotating body to rotate. It may be configured not to rotate.

  In the embodiment, the first case 34A has the first rod receiving hole 342A, and the second case 34B has the second rod receiving hole 342B. However, the present invention is not limited to this. The configuration of the accommodation hole 342A and the second rod accommodation hole 342B is omitted, and the portions of the first spiral rod 31A and the second spiral rod 31B accommodated therein are arranged outside the first case 34A and the second case 34B. May be adopted.

In the above-described embodiment, the first resistor 33A is attached to the first spiral rod 31A on the side closer to the door than the first rotary body 32A, receives the movement of the strike 36 in the closing direction X1, and is moved by the first catcher 35A. Although one spiral rod 31A is configured to be pulled in the closing direction X1, it is not limited to this. For example, a configuration in which the first resistor 33A is disposed closer to the door end than the first rotator 32A, thereby receiving the movement of the strike 36 in the closing direction X1 and compressing the first spiral rod 31A in the closing direction X1. It may be.
In addition, the second resistor 33B is attached to the second spiral rod 31B on the door tip side with respect to the second rotary body 32B, receives the movement of the strike 36 in the opening direction X2, and receives the second spiral rod by the second catcher 35B. 31B is pulled in the opening direction X2, but is not limited to this. For example, a configuration in which the second resistor 33B is disposed closer to the door end than the second rotating body 32B, thereby receiving the movement of the strike 36 in the opening direction X2 and compressing the second spiral rod 31B in the opening direction X2. It may be.

  In the above-described embodiment, two rod mounting holes 356 and 357 are formed in the first catcher 35A and the second catcher 35B, so that they are interchangeable, but the present invention is not limited to this. For example, one rod mounting hole may be formed in the first catcher 35A and the second catcher 35B, and each may be configured as a dedicated member.

  In the above-described embodiment, the first case 34A and the second case 34B are arranged adjacent to each other in the axial direction X, but are not limited thereto, and may be arranged at appropriate intervals in the axial direction X.

In the above-described embodiment, the first catcher 35A includes the two retractable members 352 and 353 that can be retracted into the catcher main body 351; however, the present invention is not limited to this. For example, as shown in FIG. 9, the configuration of the retractable member 352 on the door side may be omitted, and instead, a protrusion 351A protruding from the catcher body 351 may be provided. In this case, the configuration of the closed-side guide portion 375 of the first guide groove 373A is unnecessary, and is omitted. The closed position of the door 20A is set to the position of the door 20A in a state where the protrusion 351A and the strike 36 are engaged.
The second catcher 35B includes the retreat members 352 and 353 that can retreat in the catcher body 351; however, the present invention is not limited to this. For example, the configuration of the retractable member 353 on the door end side may be omitted, and instead, a protrusion (substantially the same as the protrusion 351A) protruding from the catcher body 351 may be provided. In this case, the configuration of the open-side guide portion 376 of the second guide groove 373B is unnecessary, and is omitted. The open position of the door body 20A is set to the position of the door body 20A in a state where the protrusion and the strike 36 are engaged.

In the above-described embodiment, the number of teeth of the engaging teeth 40 and 50 is equal to each other. However, the number of teeth is not limited to this, and one of the engaging teeth 40 and 50 may be an integral multiple of the other. For example, the number of teeth of the engagement teeth 40 of the first driving rotating body 321A may be set to an integral multiple of the number of teeth of the engaging teeth 50 of the first driven rotating body 322A.
Further, the non-meshing tooth surfaces 42 and 52 are formed in a flat surface shape, but may be formed in a convex or concave curved shape.
Furthermore, the outer diameter of the first driving rotary body 321A may be formed slightly smaller than the outer diameter of the first driven rotary body 322A.

In the above-described embodiment, right triangular engaging teeth 40 and 50 that engage with each other are provided on the first driving rotator 321A and the second driving rotator 321B and the first driven rotator 322A and the second driven rotator 322B. However, the shape is not limited to this, and any shape may be used as long as it can engage with each other. For example, a rectangular shape may be used.
Further, the first driving rotator 321A and the second driving rotator 321B, and the first driven rotator 322A and the second driven rotator 322B may have a friction portion that is in frictional contact with each other so as to be able to transmit rotation.

In the above embodiment, the screw pitches of the first spiral rod 31A and the second spiral rod 31B are equal pitches, but are not limited thereto, and the screw pitches along the axial direction X of the first spiral rod 31A and the second spiral rod 31B are not limited to this. The pitch may be different. With such a configuration, it is possible to adjust the moving force applied to the first driving rotating body 321A and the second driving rotating body 321B by the movement of the first spiral rod 31A and the second spiral rod 31B in the axial direction X.
The screw pitch may be set in consideration of a braking timing and a braking force for the closing movement and the opening movement of the door body 20A.
For example, the screw pitch of the first spiral rod 31A closer to the door end side may be larger than the screw pitch of the first spiral rod 31A closer to the door tip side. In this case, the first driving rotator 321A is It becomes easier to engage with the first driven rotating body 322A in a state where the screw is engaged closer to the door end side than in a state where the screw engagement is closer to the door end side, and the first spiral rod 31A is rotated with respect to the movement in the axial direction X. The amount also increases. Therefore, the closing movement can be smoothly performed at the start of the movement of the door body 20A, and the closing movement can be braked at the end of the movement.
In addition, for example, the screw pitch of the second spiral rod 31B closer to the door tip side may be larger than the screw pitch of the second spiral rod 31B closer to the door end side. In this case, the second driving rotating body 321B is configured to use the second spiral rod 31B. Is more easily engaged with the second driven rotary body 322B in the state of screw engagement on the side of the door end than in the state of screw engagement on the side of the door tip side, against the movement of the second spiral rod 31B in the axial direction X. The amount of rotation also increases. Thus, the door body 20A can be smoothly opened and moved at the start of the movement, and can be braked at the end of the movement.

  In the above embodiment, in the opening / closing brake device 30, the first driving rotator 321A is urged away from the first driven rotator 322A by the first coil spring 323A, and the second driving rotator 321B is urged by the second coil spring 323B. Is urged in the direction away from the second driven rotary body 322B, but is not limited to this. For example, it may be elastically urged by an elastic body such as rubber or a spring washer, or may be urged by a magnet.

  In the above-described embodiment, the sliding door 1 includes the bidirectional opening / closing brake device 30 that brakes the movement of the door body 20A in the closing direction X1 and the opening direction X2, but is not limited thereto. For example, only the first braking device 30A may be provided as a one-way braking device that brakes the movement of the door body 20A in the closing direction X1. Further, for example, only the second braking device 30B may be provided as a one-way braking device that brakes the movement of the door body 20A in the opening direction X2.

  In the above-described embodiment, the sliding door 1 is described as a fitting to which the opening / closing brake device 30 of the present embodiment is attached, but other than this, a folding door, an up / down window, a partition, a sliding gate, a shutter, a gate, and the like may be used. .

  DESCRIPTION OF SYMBOLS 1 ... Sliding door (fitting), 10 ... Frame, 11 ... Upper frame, 12 ... Lower frame, 13 ... Vertical frame, 20A, 20B ... Door body, 21A, 21B ... Upper frame, 22A, 22B ... Lower frame, 23A, 23B: vertical frame, 24A, 24B: panel, 30: open / close braking device, 30A: first braking device, 30B: second braking device, 31A: first spiral rod, 31B: second spiral rod, 32A: first rotation Body, 32B ... second rotating body, 33A ... first resistor, 33B ... second resistor, 34A ... first case, 34B ... second case, 35A ... first catcher (first engagement body), 35B ... Two catchers (second engaging body), 36 ... strike (first engaged body, second engaged body), 37A ... first guide body, 37B ... second guide body, 38A, 38B ... outer frame, 39A, 39B ... Receiving members, 40, 50 ... Engaging teeth, 41 51: meshing tooth surface, 42, 52: non-meshing tooth surface, 43, 53: tooth tip, 321A: first driving rotating body, 321B: second driving rotating body, 322A: first driven rotating body, 322B ... Second driven rotary body, 323A: first coil spring, 323B: second coil spring, 331: split groove, 332: adjusting screw, 341A: first rod insertion hole, 341B: second rod insertion hole, 342A: first rod accommodation Hole, 342B: second rod accommodation hole, 351: catcher main body (engaging body main body), 351A: protrusion, 352, 353: retractable member, 354, 355: guide pin, 356, 357: rod mounting hole, 358, 359 .., Guide groove, 361, base, 362, engaging projection, 371, 372, guide plate, 373A, first guide groove, 373B, second guide groove, 374, protruding guide part, 375 Chain-side guide portion, 376 ... open side guide part, X ... axial direction, X1 ... closing direction, X2 ... opening direction.

Claims (11)

A first braking device that brakes movement of the closing surface material in the closing direction, and a second braking device that brakes movement of the closing surface material in the opening direction,
The first braking device includes a first spiral rod, a first rotating body in which the first spiral rod is threadably engaged in an axial direction, and a first rotating body that generates a resistance to rotation of the first rotating body. With a resistor,
The second braking device includes a second spiral rod, a second rotating body in which the second spiral rod is screwed movably in an axial direction, and a second rotating body that generates a resistance to rotation of the second rotating body. With a resistor,
The first braking device and the second braking device are disposed to face each other in the axial direction of the first spiral rod and the second spiral rod,
The opening and closing brake device, wherein the first spiral rod and the second spiral rod are arranged at different positions in a direction orthogonal to the axial direction. The opening / closing brake device according to claim 1,
The first rotating body includes a first driving rotating body that is screw-engaged with the first spiral rod, a first driven rotating body that is rotatable with respect to the first spiral rod, and the first driving rotating body. A first biasing member that biases the first driven rotary body in the separation direction,
The first resistor is configured to generate a resistance to the rotation of the first driven rotor,
The first rotating body is configured to move the first rotating member by the urging force of the first urging member in accordance with a moving speed of the first spiral rod that moves in the axial direction based on a movement of the closing face member in a closing direction. When the driving rotator is disengaged from the first driven rotator in a disengaged state, the first driving rotator can transmit rotation to the first driven rotator against the urging force of the first urging member. It is configured to be able to switch between the engaged state and the engaged state,
The second rotating body includes a second driving rotating body screw-engaged with the second spiral rod, a second driven rotating body rotatable with respect to the second spiral rod, and the second driving rotating body. A second biasing member that biases the second driven rotary body in the separation direction,
The second resistor is configured to generate a resistance to the rotation of the second driven rotor,
The second rotating body is configured to move the second rotating body by the urging force of the second urging member in accordance with a moving speed of the second spiral rod that moves in the axial direction based on the movement of the closing face material in the opening direction. When the driving rotator is disengaged from the second driven rotator in a disengaged state, the second driving rotator can transmit rotation to the second driven rotator against the urging force of the second urging member. An opening / closing brake device characterized in that it can be switched between an engaged state and an engaged state. The opening / closing brake device according to claim 1 or 2,
The first braking device includes a first case containing the first rotating body and the first resistor,
The second braking device includes a second case containing the second rotating body and the second resistor,
In the first case, a first rod insertion hole through which the first spiral rod is inserted, and a first rod accommodation hole capable of accommodating the second spiral rod are formed,
The second case is provided with a second rod insertion hole through which the second spiral rod is inserted, and a second rod accommodation hole capable of accommodating the first spiral rod. apparatus. The opening / closing brake device according to any one of claims 1 to 3,
The first braking device includes a first engagement body attached to the first spiral rod, and a first engaged body with which the first engagement body is engaged.
The second braking device includes a second engagement body attached to the second spiral rod, and a second engaged body with which the second engagement body is engaged,
The first engagement body is configured to transmit the movement of the first engagement body to the first spiral rod in an engagement state with the first engaged body,
The opening / closing brake device, wherein the second engaging body transmits the movement of the second engaged body to the second spiral rod in an engaged state with the second engaged body. The opening / closing brake device according to claim 4,
The first engaging body is configured to transmit a moving force of the first engaged body to the first spiral rod as an axial tensile force in an engaged state with the first engaged body,
The second engagement body is configured to transmit a moving force of the second engagement body to the second spiral rod as an axial tension force in an engagement state with the second engaged body. An open / close braking device characterized by the following. The opening / closing brake device according to claim 4 or 5,
An opening / closing brake device, wherein each of the first engagement body and the second engagement body has two rod mounting holes formed at positions different from each other in a direction orthogonal to the axial direction. The opening / closing brake device according to any one of claims 4 to 6,
The first braking device includes a first guide body that guides the first engagement body along the axial direction,
The second braking device includes a second guide body that guides the second engagement body along the axial direction,
The first engaging body and the second engaging body each include an engaging body main body, two retractable members that can protrude and retract from the engaging body main body, and guide pins formed on the two retractable members, respectively.
The first guide body is formed with a first guide groove for guiding the two guide pins of the first engagement body,
The second guide body is formed with a second guide groove for guiding the two guide pins of the second engagement body,
The first guide groove and the second guide groove are a protruding guide portion that guides the two guide pins in a state where the two retractable members protrude, and the two protruding guide portions are closed at the ends in the closing direction. A closed guide portion for guiding the guide pin located on the closing direction side of the guide pin in the immersion direction, and an open end side of the protruding guide portion located on the open direction side of the two guide pins. An opening / closing braking device, comprising: an open-side guide portion for guiding a guide pin in a immersion direction. A spiral rod, a rotating body in which the spiral rod is screwed movably in the axial direction, a resistor for generating a resistance to rotation of the rotating body, an engaging body attached to the spiral rod, An engaged body with which the union is engaged, and a guide body that guides the engaged body along the axial direction of the spiral rod,
The engaging body includes an engaging body main body, two retractable members that can protrude and retract with respect to the engaging body main body, and a guide pin formed on the two retractable members, and in an engagement state with the engaged body. It is configured to transmit the movement of the engaged body to the spiral rod,
A guide groove for guiding the two guide pins of the engagement body is formed in the guide body,
The guide groove is configured to guide the two guide pins in a state in which the two retractable members protrude, and a position at one end of the two guide pins at one end of the protrusion guide. One end side guide portion for guiding the guide pin to be immersed in the immersion direction, and another end portion for guiding the guide pin located on the other end side of the two guide pins in the immersion direction at the other end portion of the protruding guide portion. A braking device characterized by being configured by an end-side guide portion. The braking device according to claim 8,
The rotator is a driving rotator screw-engaged with the spiral rod, a driven rotator rotatable with respect to the spiral rod, and biases the driving rotator in a direction away from the driven rotator. An urging member,
The resistor is configured to generate a resistance to rotation of the driven rotor,
The rotating body is configured to move in a non-engaged state in which the driving rotary body is separated from the driven rotary body by an urging force of the urging member in accordance with an axial moving speed of the spiral rod; A braking device characterized in that the driving rotator can be switched to an engaged state in which the driving rotator is engaged with the driven rotator so as to be able to transmit rotation against a force. A closing panel that can be arranged in an opening of a building, and the opening / closing brake device according to any one of claims 1 to 7,
On one of the closed face material side and the opening side, the first braking device and the second braking device are attached,
The first braking device is configured to be able to engage with the other of the closed surface material side and the opening side so that the movement of the closed surface material in the closing direction is transmitted to the first spiral rod,
The second braking device is configured to be engageable with the other of the closed surface material side and the opening side so that the movement of the closed surface material in the opening direction is transmitted to the second spiral rod. Fittings characterized by that. A closing panel that can be arranged at an opening of a building, and the braking device according to claim 8 or 9,
The engaging body is attached to one of the closed face material side and the opening side, and the engaged body is attached to the other of the closed face material side and the opening side. A fitting that is characteristic.

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