JP4847490B2 - Sliding door closing prevention device and automatic door closing device provided with the closing prevention device - Google Patents

Description

  The present invention relates to a sliding door closing prevention device, and more particularly, to a sliding door closing prevention device suitable for enabling an open sliding door to be held in that position in a sliding door provided with an automatic door closing device.

  There are several types of devices that automatically close an open sliding door. One type of device is a linear rack set horizontally in the upper horizontal frame of the door frame and a sliding door. Some include a closing drive device that is fixed and operatively connected to the rack to drive the sliding door to close when the sliding door is opened. Specifically, the door-closing drive device includes a casing fixed to the sliding door, a gear rotatably attached to the casing and meshed with the rack, and rolling along the rack as the sliding door is opened and closed. A spring device that stores a spring biasing force that closes the sliding door as the gear rolls along the rack when the sliding door is opened, and a sliding door that is opened and released by a human hand A braking device that applies braking when the door is closed by the spring device is provided. (For example, see Patent Document 1)

  In such an automatic door closing device for a sliding door, it may be desired to be able to keep the sliding door in an arbitrary position.

Patent document 2 is an automatic door closing device different from the above, but discloses a device for holding a sliding door in an open position.
JP-A-11-152955 Japanese Patent Fair 8-9932

  An object of the present invention is to provide a new door closing prevention device having a mechanism different from that disclosed in Patent Document 2, which is a door closing prevention device in such an automatic door closing device.

That is, the present invention
A support body that is pivotable about a pivot (50) adjacent to a rotating body (38) that rotates forward and reverse as the sliding door (denoted by reference numeral 20 in the following description of the embodiment) opens and closes. (52)
An engagement displacement member (56) supported by the support (52) so as to be displaceable, the support displaceably engaging the engagement displacement member (56) with the support (52) at one end. It has an engaging part (62), and has a rotating body engaging part (54) engaged with the rotating body at the other end, and the rotating body engaging part (54) opens the sliding door. And the forward rotation direction limit position in the forward rotation direction (position in FIG. 6) and the reverse rotation direction limit position in the reverse rotation direction (position in FIG. 4) with the forward rotation and reverse rotation of the rotating body accompanying the closing operation respectively. The support body engaging portion (62) can be displaced along the arcuate path, and the rotating body engaging portion (54) moves forward in the door opening direction and the rotating body (38) rotates forward. ) Is moved toward the limit position in the forward rotation direction, it can be displaced relative to the support, and the sliding door can be closed. When the rotating body (38) is rotated in the reverse direction and the rotating body engaging portion (54) is moved toward the reverse rotation direction limit position, the rotating body engaging portion is on the way to the reverse rotation direction limit position. An engagement displacement member adapted to displace relative to the support (52) and thereby displace the support about the pivot as the rotor engagement portion is displaced. (56)
When the sliding door moves in the closing direction, the engagement displacement member (56) is elastically deformed around the pivot of the support (52) with the displacement and has a predetermined elastic force. Displacement is prevented, thereby preventing rotation of the rotating body (38) with which the rotating body engaging portion (54) of the engaging displacement member (56) is engaged, thereby preventing the sliding door from closing. At the same time, when a force greater than the predetermined elastic force is applied, it is further elastically deformed to allow the displacement of the support body (52), and the rotating body engaging portion (54) is displaced to the reverse direction limit position. A sliding door closing prevention device comprising: an elastic displacement preventing member (60) adapted to permit.

  This door closing prevention device is greatly different in configuration from the device of Patent Document 2 described above, and it is not always necessary to link the door closing device with the wheel of the sliding door. It can be attached in relation to the gear of the braking device in the door closing device or the gear of the door driving device engaged therewith. In this apparatus, when the closing operation by the automatic closing device is started by releasing the hand that has opened the sliding door, the above-described elastic displacement prevention member (60) prevents the closing operation with a predetermined elastic force and opens the sliding door. Stay in position. When a force in the closing direction that is equal to or greater than the predetermined elastic force is applied to the sliding door, the support member is displaced by further displacing the elastic displacement prevention member. Displaced towards position, allowing the sliding door to close.

Specifically, the support body (52) includes a support section (in the embodiment, a V-shaped groove 64 and a support section) that displaceably supports the rotating body engagement section (62) of the engagement displacement member (56). to have to have) the support portion (64), said support engaging portion and the engaging when the rotating member engaging portion (62) is in said forward direction limit position and reverse direction limit position The support center portion (64-1) to be moved and the support body member to be displaced when the rotating body engaging portion is displaced from the reverse rotation direction limit position to the forward rotation direction limit position along the arcuate path. The door opening guide surface (64-2) extending from the support center portion (64-1) to guide the joint portion (62) and the rotating body engaging portion (62) from the forward rotation direction limit position. When displacement is made along the arcuate path toward the reverse direction limit position, the support at the support center portion (64-1) is accordingly accompanied. Body engagement portion (62) is guided from being displaced from the support center portion (64-1), said support engaging when said rotating member engaging portion (62) has come in the middle of the circular arcuate path A door closing guide surface (64-3) extending from the support central portion (64-1) adapted to prevent relative displacement of the joint portion (62) with respect to the support (52). Can be.

In addition, this door closing prevention device
Adjacent to the rotating body (38), it has a pressing member (68) provided parallel to the pivot (50) of the support (52),
The support body (52) includes an insertion hole (66) through which the pressing member (68) passes, and includes a displacement preventing member (60) having the elasticity described above.
The insertion hole (66) moves the pressing member (68) when the rotating body engaging portion (62) is moved toward the reverse rotation limit position and the support (52) is displaced around the pivot (50). Relative displacement with respect to
The displacement preventing member (60) having elasticity can be pressed and engaged with the pressing member in accordance with the displacement of the support (52) to prevent the support from pivoting.
The pressing member (68) has been threadedly engaged in the pivot screw member provided along an axis parallel to (50) (70) of the support (52), the axis of the screw member (70) By rotating around, it is possible to displace in the axial direction, thereby making it possible to adjust the degree of pressing engagement of the pressing member (68) with respect to the displacement preventing member (60).

  Specifically, the pressing member (68) has a pressing portion (68-1) having an inclined surface that protrudes toward the displacement preventing member (60) having elasticity and is inclined in the pivot (50) direction. By rotating the screw member (70), the position of the inclined surface with respect to the elastic displacement preventing member (60) can be adjusted, and the degree of pressing engagement of the pressing member (68) with respect to the displacement preventing member (60) can be adjusted. It can be adjustable.

  As another form, the displacement preventing member (60) having elasticity is provided so as to incline in the direction of the pivot (50), and the pressing member (68) projects toward the displacement preventing member (60) having elasticity. It has a pressing part (68-1), and the position of the pressing part with respect to the displacement prevention member (60) can be adjusted by a screw member.

The present invention also provides
The first gear (32) meshed with the rack (18) set in the opening / closing direction of the sliding door is provided, and the first gear ( 32) and a closed door driving device for storing a spring biasing force that rolls the first gear (32) in the opposite direction as the first gear (32) rolls, and a first gear meshed with the first gear (32). A brake device for braking the rotation of the second gear (38) when the second gear (38) is rotated in accordance with the movement of the sliding door toward the door closing position. An automatic door closing device including a drive device and a casing (30) for housing the braking device, the sliding door closing prevention device set in the casing (30), wherein the rotating body is connected to the second gear. And the rotor engaging portion is a pin that engages with the teeth of the second gear. To provide an automatic closing device with the door closing blocking device.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG.1 and FIG.2 shows the sliding door apparatus 12 which attached the automatic door closing apparatus 10 provided with the door closing prevention apparatus 1 of the sliding door which concerns on this invention.

  The automatic door closing device 10 includes a rack 18 fixed to the upper frame portion 16 of the door frame 14 and a door driving device 22 fixed to the sliding door 20 and operatively connected to the rack 18.

  As shown in FIG. 2, the door closing drive device 22 includes a casing 30 fixed to the sliding door 20, a gear (rotary member) 32 rotatably attached to the casing, and the rack 18 horizontally between the gear 32. An engagement holding member 36 for holding the engagement between the teeth of the rack 18 and the teeth of the gear 32, and a spring (not shown) provided concentrically with the gear inside the gear 32, When the sliding door 20 is moved from the closed position toward the open position, the spring 32 that accumulates a spring urging force that causes the gear 32 to roll in the direction opposite to the rolling direction when the gear 32 rolls, and the gear 32. And a braking device 40 for braking the rolling gear 32 when the gear 32 rolls as the sliding door 20 moves toward the closed position. In FIG. 2, reference numeral 42 denotes a spring member, which is attached to the inner wall surface of the side wall (not shown) of the casing provided on the front side in the drawing. This stops the rotation of the shaft by pressing two opposite surfaces of the hexagonal portion 44 integral with a shaft (not shown) to which one end of the mainspring is fixed. When changing the strength of the mainspring, the hexagonal portion is rotated by a screwdriver or the like, the shaft is rotated, and the mainspring is wound or unwound.

  The door closing prevention device 1 according to the present invention includes a support body 52 that is pivotable around a pivot 50 with respect to a casing 30, and an engagement displacement member that is supported by the support body 52 so as to be displaceable and engaged with a gear 38. 56, the forward rotation direction limit position in the forward rotation direction with the forward rotation (clockwise in FIG. 2) and the reverse rotation (counterclockwise) of the gear 38 associated with the opening and closing operations of the sliding door 20, respectively. Engagement having a first pin (rotating body engaging portion) 54 that is displaceable along an arcuate path between the position in FIG. 6 (the position in FIG. 6) and the reverse rotation direction limit position in the reverse rotation direction (the position in FIG. 4). As the displacement member 56 and the sliding door move in the closing direction, the first pin 54 of the engagement displacement member 56 is moved from the forward rotation direction limit position (FIG. 6) to the reverse rotation direction limit position (FIG. 4) by the gear 38. This first pin when moved toward 4 is prevented with a predetermined elastic force, and the rotation of the gear 38 with which the first pin 54 is engaged is prevented, thereby preventing the gear 32 from rolling and preventing the sliding door from moving. And a displacement preventing member 60 having elasticity for preventing the closing operation.

  Specifically, the engagement displacement member 56 has a first pin 54 at one end, and a second pin (support engagement) that engages the engagement displacement member 56 with the support 52 so as to be displaceable at the other end. Part) 62. The support body 52 has a V-shaped groove (support part) 64 that is slidably engaged with the engagement displacement member 56, and the groove 64 rotates in the forward direction of the gear 38 (that is, in accordance with the opening operation). When the first pin 54 is moved toward the forward rotation limit position (the position in FIG. 6), the second pin 62 has no resistance along the right side of the groove 64 in the drawing. When the first pin 54 is moved toward the reverse rotation limit position (position in FIG. 4), the second pin 62 is displaced along the left portion of the groove 64 in the drawing. The first pin 54 reaches the upper end of the left side portion of the groove 64 before the first pin 54 reaches the central portion of the arcuate path toward the reverse rotation direction limit position (position in FIG. 4), and relative displacement with respect to the support 52 is prevented. It is set as the dimension shape to make it correspond. When the first pin 54 engaged with the upper end of the left portion of the groove 64 is further displaced toward the central portion of the arcuate path, the support 52 is counterclockwise about the pivot 50 by the first pin 54. Pivoted in the direction.

  As can be seen from the above, the groove 64 has a support central portion 64 that engages with the second pin 62 when the first pin 54 is in the forward rotation direction limit position and the reverse rotation direction limit position (positions in FIGS. 6 and 4). -1 and the second pin 54 that is displaced when the first pin 54 is displaced from the reverse rotation direction limit position (position in FIG. 4) to the forward rotation direction limit position (position in FIG. 6) along the arcuate path. When the door is opened, the guide surface 64-2 extends from the support center portion 64-1 to guide the pin 62, and the first pin 54 reverses along the arcuate path from the normal rotation direction limit position (position in FIG. 6). When displacing toward the direction limit position (the position in FIG. 4), the first pin 54 located on the support central portion 64-1 is guided accordingly, and the first pin 54 is displaced from the support central portion 64-1, When the first pin 54 comes in the middle of the arcuate path, the support 52 of the second pin 62 It has a closing time of the guide surface 64-3 extending from only supporting the central portion 64-1 length which is adapted to prevent relative displacement, the against.

  The support body 52 is composed of two members on the front side and the back side as viewed in FIG. 2, and is pivotally attached to the casing of the door closing drive device, and is provided with an insertion hole 66 having a rectangular cross section parallel to the pivot 50. Through the insertion hole 66, a pressing member 68 having a rectangular cross section that is pressed by the above-described elastic displacement preventing member 60 is passed. Specifically, the pressing member 68 has a cylindrical shape, and is screw-engaged with a screw member 70 that is parallel to the pivot 50 of the support body 52 and rotatably provided on the casing 30, and rotates the screw member 70. Therefore, it can be displaced in the axial direction. Two displacement prevention members 60 having elasticity are provided at the bottom of the insertion hole 66 with an interval in the axial direction of the insertion hole, and the pressing member 68 is connected to the two displacement prevention members 60 having elasticity. Correspondingly, a pressing portion 68-1 with an inclined surface is provided. Accordingly, by rotating the screw member 70 around its axis, the pressing member 68 screwed to the screw member 70 is displaced in the axial direction, and the corresponding pressing portion for the elastic displacement preventing member 60 is provided. The relative position of 68-1 can be adjusted.

  When the sliding door is about to be displaced in the closing direction, and thereby the gear 38 tries to rotate counterclockwise, the second pin 64 moves along the closing guide surface 64-3 of the V-shaped groove 64 as described above. When the guide member reaches the upper end and the movement along the guide surface is stopped, and the support member 52 is pivoted around the pivot axis 50 (counterclockwise in the drawing), the pressing member 68 is It is displaced downward relative to the insertion hole 66 and is pressed and engaged with the elastic deformation preventing member 60. Thereby, the pivoting of the support body 52 is prevented, so that the displacement of the first pin 54 is prevented, the rotation of the gear 38 is prevented, and the closing operation is stopped.

  The elastic displacement preventing member 60 is further elastically deformed when a force of a certain level or more in the closing direction is applied to the sliding door stopped as described above, so that the support 52 is further counterclockwise. By being rotated, the first pin 54 is allowed to travel along the arcuate path and be displaced to the reverse rotation limit position (position in FIG. 4), whereby the sliding door is automatically operated by the closing drive device 22. It will be closed.

  FIG.10 and FIG.11 has shown the principal part of 2nd Embodiment of the closing prevention apparatus based on this invention. In this embodiment, the displacement preventing member 60 having elasticity is integrally formed so as to extend between two members constituting the support body 52, and the pressing member 68 is displaced relative to the support body 52. Accordingly, the protrusion (pressing portion) 68-1 provided on the pressing member is pressed and engaged with the elastic displacement preventing member 60.

  12 and 13, in the same embodiment, by rotating a screw member similar to the screw member 70 in the first embodiment, by adjusting the axial position of the pressing member 68, the pressing member In this example, the elastic force by the displacement preventing member 60 having elasticity is adjusted when 68 is pressed and engaged with the displacement preventing member 60 having elasticity.

It is a figure which shows the outline | summary of the sliding door apparatus which attached the automatic door closing apparatus provided with the door closing prevention apparatus which concerns on this invention. It is a figure which shows the inside of the automatic door closing drive apparatus, and is shown except the side wall before the casing of this apparatus. It is sectional drawing which shows the principal part of the door closing prevention apparatus attached to the automatic door closing apparatus of FIG. It is a figure which shows the state immediately before opening a door in the same closing prevention apparatus, The figure corresponding to FIG. 3 is shown above, and the figure corresponding to FIG. 2 is shown below. It is a figure which shows the state which started the door opening in the same closing prevention apparatus, The figure corresponding to FIG. 3 is shown on the top, and the figure corresponding to FIG. 2 is shown below. It is a figure which shows the state during door opening operation | movement in the door closing prevention apparatus, The figure corresponding to FIG. 3 is shown on the upper side, and the figure corresponding to FIG. 2 is shown below. It is a figure which shows the state which released | separated the hand from the sliding door opened in the same closing prevention apparatus, The figure corresponding to FIG. 3 above is shown, and the figure corresponding to FIG. 2 below is shown. It is a figure which shows the state by which the sliding door is stopped in the position which wants to open a door in the door closing prevention apparatus, The figure corresponding to FIG. 3 is shown on the upper side, and the figure corresponding to FIG. FIG. 9 is a diagram showing a state when the force in the closing direction is applied to the sliding door again from the state of FIG. 8 where the sliding door is kept open in the door closing prevention device, and the sliding door is in the closing operation state; A diagram corresponding to FIG. 3 is shown above, and a diagram corresponding to FIG. 2 is shown below. The state when the sliding door is opened in another embodiment of the closing prevention device is shown, and the figure corresponding to FIG. 2 is shown on the left, and the figure corresponding to FIG. 3 is shown on the right. FIG. 10 shows a state where the hand is released from the opened sliding door and the sliding door moves in the closing direction from the state of FIG. 10 and is stopped by the door closing prevention device, corresponding to FIG. 2 on the left and corresponding to FIG. 3 on the right. The figure is shown. In the embodiment of FIG. 10, the state in which the axial direction position of the pressing member is adjusted is shown, and the figure corresponding to FIG. 2 is shown on the left and the figure corresponding to FIG. 3 is shown on the right. In the embodiment of FIG. 12, the state in which the opened sliding door is prevented from closing is fastened, and the figure corresponding to FIG. 2 is shown on the left and the figure corresponding to FIG. 3 is shown on the right.

Automatic door closing device 10; Sliding door device 12; Door frame 14; Upper frame portion 16; Rack 18; Sliding door 20; Door closing drive device 22; Casing 30; Gear 32; Gear 38; Braking device 40; Body 52; first pin (rotating body engaging portion) 54; engagement displacement member 56; elastic displacement preventing member 60; second pin (support body engaging portion) 62; groove (support portion) 64; Portion 64-1; door opening guide surface 64-2; door closing guide surface 64-3; insertion hole 66; pressing member 68; pressing portion 68-1;

Claims (7)

A support that is pivotable about a pivot adjacent to a rotating body that rotates forward and backward as the sliding door opens and closes;
An engagement displacement member supported by the support body so as to be displaceable, and having a support body engaging portion for detachably engaging the engagement displacement member with the support body at one end and the rotation at the other end. A rotating body engaging portion that is engaged with the body, and the rotating body engaging portion is rotated in the normal direction along with the normal rotation and reverse rotation of the rotating body accompanying the door opening operation and the door closing operation, respectively. The support engaging portion can be displaced along an arcuate path between the forward rotation direction limit position in the reverse rotation direction and the reverse rotation direction limit position in the reverse rotation direction. When the rotating body engaging portion is moved toward the forward rotation direction limit position, it can be displaced relative to the support body, and the sliding door is moved in the closing direction to reverse the rotating body. When the rotating body engaging portion is moved toward the reverse rotation direction limit position, the rotating body engaging portion is Engagement that is prevented from relative displacement with respect to the support on the way to the limit position in the rolling direction, thereby causing the support to be displaced about the pivot as the rotor engagement portion is displaced. A displacement member;
When the sliding door moves in the closing direction, it is elastically deformed with the displacement of the support around the pivot, and the displacement of the support is prevented with a predetermined elastic force. The rotation of the rotating body engaged with the rotating body engaging portion is prevented to prevent the sliding door from being closed, and when a force greater than the predetermined elastic force is applied, the sliding body is further elastically deformed and A sliding door closing prevention device comprising: an elastic displacement preventing member that allows the displacement and allows the rotating body engaging portion to be displaced to the reverse rotation direction limit position. The support body has a support portion that supports the rotating body engaging portion of the engagement displacement member so that the rotating body engaging portion can be displaced, and the rotating body engaging portion has the forward rotation direction limit position and the reverse rotation direction. A support central portion that engages with the support engaging portion when in the limit position, and the rotating body engaging portion is displaced from the reverse rotation direction limit position to the forward rotation direction limit position along the arcuate path. In addition, a guide surface at the time of opening of the door extending from the center of the support for guiding the support engaging portion that is displaced in accordance therewith, and the rotating body engaging portion along the arcuate path from the normal rotation direction limit position. Te when displaced toward the reverse direction limit position, accordingly, the support engaging portion that has been in supporting the central portion is guided from being displaced from the support center portion, the rotating body engaging portion When the middle of the arcuate path is reached, the relative displacement of the support engaging portion with respect to the support is prevented. And closing blocking device of the sliding door according to claim 1 having a door closing time guide surface extending from the support center portion. A pressing member provided adjacent to the rotating body and parallel to the pivot of the support;
The support has an insertion hole through which the pressing member passes, and includes a displacement preventing member having elasticity.
The insertion hole is configured to be displaced relative to the pressing member when the rotating body engaging portion is moved toward the reverse rotation limit position and the support is pivoted about the pivot axis. ,
The sliding door closing prevention device according to claim 2, wherein the elastic displacement preventing member is pressed and engaged with the pressing member in accordance with the displacement of the support so as to prevent pivoting of the support. Pressing member is being threadably engaged to the threaded member provided along an axis parallel to該枢axis of the support, the displacement in the axial direction by rotating the screw member about the said axis 4. The sliding door closing prevention device according to claim 3, wherein the sliding door closing prevention device according to claim 3 is configured so that the degree of pressing engagement of the pressing member with respect to the displacement preventing member can be adjusted.   The pressing member has a pressing part that protrudes facing the displacement preventing member having elasticity and has an inclined surface that is inclined in the axial direction, and the displacement preventing member having elasticity by rotating the screw member. 5. The sliding door closing prevention device according to claim 4, wherein the position of the inclined surface relative to the displacement preventing member can be adjusted, and the degree of pressing engagement of the pressing member with respect to the displacement preventing member can be adjusted. The elastic displacement preventing member is provided so as to be inclined in the pivot direction, the pressing member has a pressing portion facing the elastic displacement preventing member, and the position of the pressing portion with respect to the displacement preventing member is screwed. The door closing prevention device for a sliding door according to claim 4, which is adjustable by a member. A first gear that meshes with a rack set in a sliding door opening / closing direction, and the first gear rolls along the rack as the sliding door opens. A closing door drive device that stores a spring biasing force that rolls the first gear in the opposite direction, and a second gear meshed with the first gear, and the second door is moved in accordance with the movement of the sliding door toward the closing position. In the automatic closing device having a braking device for braking against the rotation when the gear 2 is rotated, and the closing drive device and a casing for housing the braking device, the inner gear is set in the casing. The sliding door closing prevention device according to any one of claims 1 to 6, wherein the rotating body is the second gear, and the rotating body engaging portion is engaged with a tooth of the second gear. The automatic door closing device provided with the sliding door closing prevention device made.

Images