JP2004332403A - Door closing device for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door closing device which enables the stop of a guide member, stopped in a temporary stop part, to be smoothly released by a slight force in a closing operation of a sliding door. <P>SOLUTION: This door closing device comprises: a case body 10 which has a traveling guide groove 12 for guiding the guide member 11, the temporary stop part 13 for a vertical groove, which is formed in the state of being bent to an upward side from an end of the guide groove 12, and an engaging-pin guide groove 16 for guiding an engaging pin 15 of a sliding door runner; a guide member 11 which has an oval shaft part 18 to be engaged with the guide groove 12, which is provided so as to be movable along the guide groove 12, and which makes either of paired hook pieces 11a and 11b face into the guide groove 16; and a spring member 14 for urging the guide member 11 to a door closing side. In the closing operation of the sliding door 2, the engaging pin 15 turns the guide member 11, which stops in the stop part 13, via the hook piece 11a; and the shaft part 18 is turned in such a manner that an upside inflection point G of a boundary part between the guide groove 12 and the temporary stop part 13 serves as a supporting point, so that a stop state can be released. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sliding door door closing device that assists a sliding door to a door closing position by a guide member biased by a spring member.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, storage furniture such as cupboards, bookcases, and display shelves are often provided with sliding doors that are opened and closed by runners (roller devices) that are movably guided along traveling rails. In addition, a door closing device may be provided in order to reliably close the sliding door.
[0003]
The door closing device is urged in a door closing direction by a spring member, and includes a guide member that can be reciprocated between a door closing position and a temporary stop position separated from the door closing position, and when the sliding door is closed, An engaging pin provided on a sliding door runner guided along a traveling rail engages with the guide member stopped at the temporary stop position, and acts on the guide member in this engaged state. The biasing force assists the sliding door to the closed position.
[0004]
Specifically, as the door closing device, the one shown in FIG. 9 in Patent Document 1 below is provided on the market. The door closing device 50 has a traveling guide groove 53 formed along the horizontal direction for guiding the guide member 52, and a substantially circular hole shape at the door opening side end position of the traveling guide groove 53. A temporary stop portion 54 of the guide member 52 and an engagement pin guide groove 55 formed along the horizontal direction and having an opening facing the door opening side for guiding the engagement pin 57 are formed. A case main body 51, a shaft portion 56 having a substantially elliptical shape fitted into the travel guide groove 53, provided so as to be reciprocally movable along the travel guide groove 53, and a pair of hook pieces 52a, 52b. A guide member 52 having at least one hook piece 52a (52b) facing the engagement pin guide groove 55 so as to be able to engage with the engagement pin 57, and one end of the guide member 52 is engaged with the case body 51. While the other end And a spring member 58 for urging the guide member 52 in the door closing direction. When the sliding door is opened, the engagement pin 57 is connected to the door of the travel guide groove 53. By rotating the guide member 52 via the hook piece 52b at the open end, the substantially elliptical shaft portion 56 is in the vertical state, the guide member 52 is held at the temporary stop portion 54, and the sliding door is closed. At the time of operation, the engaging pin 57 rotates the guide member 52 via the hook piece 52a to release the temporary stop state, and the guide member 52 is guided by the traveling guide groove 53 together with the engaging pin 57 (runner) to the door closing position. It has been attracted to. Further, as another door closing device, for example, a device described in Patent Literature 2 below can be cited.
[0005]
[Patent Document 1]
JP 2003-56240 A [Patent Document 2]
JP-A-2002-339649
[Problems to be solved by the invention]
However, in the door closing device 50, as shown in FIG. 10, when the guide member 52 is released from the temporary stop state, the substantially elliptical shaft portion 56 is rotated in the circular hole by the horizontal force of the engagement pin 57. However, the acting force of the engaging pin 57 causes a horizontal force H and a rotational moment M to act on the substantially elliptical shaft 56. Although the latter rotational moment M acts as a force for rotating the guide member 52 as it is, the horizontal force H increases the frictional resistance with the wall of the circular hole 54 when the substantially elliptical shaft portion 56 rotates. Therefore, it is necessary to apply a relatively large force to the sliding door in order to rotate the guide member 52 after the engagement pin 57 comes into contact with the guide member 52.
[0007]
Therefore, a main problem of the present invention is to provide a door-tightening device in which the guide member stopped at the temporary stop portion can be smoothly released from the stop operation with a small force when the sliding door is closed in the above-mentioned door-closing device. is there.
[0008]
[Means for Solving the Problems]
As the present invention according to claim 1 for solving the above-mentioned problem, a spring member is urged in a door closing direction, and can be reciprocated between a door closing position and a temporary stop position separated from the door closing position. An engaging pin provided on a sliding door runner guided along a travel rail engages with the guiding member stopped at the temporary stop position when the sliding door is closed. A sliding door door locking device that assists a sliding door to a door locking position by an urging force acting on the guide member while being in an engaged state,
The door closing device is a traveling guide groove formed along the horizontal direction to guide the guiding member, a temporary stop portion of the guiding member formed at the door opening side end position of the traveling guide groove, A case body formed with an engagement pin guide groove formed along the horizontal direction, with the opening facing the door opening direction side for guiding the engagement pin,
It has a substantially elliptical shaft portion that engages with the travel guide groove, is provided so as to be able to reciprocate along the travel guide groove, includes a pair of hook pieces, and is configured to be able to engage with the engagement pin. A guide member with at least one hook piece facing the engagement pin guide groove,
One end is locked to the case main body, and the other end is locked to the guide member, comprising a spring member for urging the guide member in the door-tight direction,
The temporary stop portion of the guide member is a vertical groove portion that is continuously bent upward from the door opening side end of the travel guide groove, and when the sliding door is opened, the engaging pin is formed in the travel guide groove. By rotating the guide member via the hook piece at the door opening side end, the substantially elliptical shaft portion is in a vertical state, the guide member is held at the temporary stop portion, and at the time of the closing operation of the sliding door, The engagement pin rotates the guide member through the hook piece, and the substantially elliptical shaft portion of the guide member rotates around the upper bending point of the boundary between the travel guide groove and the temporary stop portion as a fulcrum. A door closing device for a sliding door, wherein the temporary stop state is released.
[0009]
In the present invention according to claim 1, the temporary stop portion for stopping the guide member at the door opening side position is a vertical groove portion which is continuously bent upward from the door opening side end of the travel guide groove. When the sliding door is closed, the engaging pin rotates the guide member via the hook piece, and the substantially elliptical shaft portion of the guide member is bent upward at the boundary between the traveling guide groove and the temporary stop portion. The temporary stop state is released by rotating around a point. Therefore, when the substantially elliptical shaft portion starts rotating, the substantially elliptical shaft portion immediately enters the traveling guide groove while sliding, so that the stop state can be smoothly released with a small force.
[0010]
According to a second aspect of the present invention, there is provided the sliding door door closing device according to the first aspect, wherein the vertical groove portion of the temporary stop portion has a door opening side wall surface formed in an arc shape. At the time of opening the sliding door, the substantially elliptical shaft portion smoothly rotates to the vertical state, and also at the time of closing the sliding door, the substantially elliptical shaft portion smoothly rotates to the horizontal state. become.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a storage shelf 1 using the door-locking device according to the present invention, FIG. 2 is a view taken along line II-II in FIG. 1, and FIG. 3 is a perspective view of a door-locking device 8 according to the present invention. .
[0012]
The sliding door 2 shown in FIG. 1 has, for example, a panel 7 made of glass or the like fitted in a frame 3 composed of an upper frame 3A, a lower frame 3B, and vertical frames 3C, 3D made of a metal material such as aluminum. As shown in FIG. 2, the upper frame 3A is provided with an arm piece 21 extending integrally therewith. Runners 6, 6 are provided on both upper ends of the arm piece 21, respectively. The runner 6 is provided with an engaging pin 15 by projecting a support shaft supporting the roller 6A to the side.
[0013]
On the other hand, as shown in FIG. 2, the storage shelf 1 has a bracket-like rail receiver 20 fixedly mounted on the front side of the upper plate 1 </ b> A, and the traveling rail 4 that guides the runner 6 movably to the rail receiver 20. 4 is provided along the horizontal direction, and a lower rail 5 to which the lower frame 3B of the sliding door is fitted is provided along the horizontal direction on the front side of the lower plate 1B. Two sliding doors 2 and 2 are provided to be openable and closable using the rail 5 as a travel guide. In the present storage shelf 1, door closing devices 8, 8 are provided at both ends of the traveling rail 4, respectively, so that when the sliding door 2 approaches the closing position when the sliding door 2 is closed, the sliding door 2 is automatically drawn to the door closing position. Has become.
[0014]
Hereinafter, the door closing device 8 will be specifically described in detail.
[0015]
As shown in FIGS. 3 and 4, the door closing device 8 includes a case body 10, a guide member 11 incorporated in the case body 10, and a spring member 14 also incorporated in the case body 10. It is.
[0016]
The case body 10 has a travel guide groove 12 formed along a horizontal direction (rail direction) for guiding the guide member 11, and the travel guide groove 12 formed at a door opening side end position of the travel guide groove 12. In order to guide the temporary stop portion 13 of the guide member 11 and the engagement pin 15 of the runner 6, it is provided adjacent to the lower side of the traveling guide groove 12 and has an opening facing the door opening direction. This is a member having an engagement pin guide groove 16 formed along the horizontal direction in the state, and a spring member accommodating portion 9 opened to the upper side and formed along the horizontal direction. In particular, in the door closing device 8, the temporary stop portion 13 of the guide member 11 is formed by bending a vertical groove continuously upward from the door opening side end of the travel guide groove 12 (hereinafter, the vertical groove temporary stop portion). 13). As shown in detail in FIG. 8, the vertical groove temporary stop portion 13 has a door opening side wall surface 13a formed in an arc shape so that an elliptical shaft portion 18 of the guide member 11 described later can rotate smoothly. It is preferable that the center of the elliptical shaft portion 18 is substantially the same as the upper bending point G of the boundary between the traveling guide groove and the temporary stop portion, or the center is slightly lower than the upper bending point G of the boundary. It is desirable to be at the side position.
[0017]
At the door-tight side end of the door-tightening device 8, a mounting screw hole 17a is formed, and the door-tightening device 8 is fixed to the rail receiver 20 by a mounting screw 17 screwed into the mounting screw hole 17a. .
[0018]
As shown in FIG. 6, the guiding member 11 has substantially elliptical shaft portions 18 (hereinafter, referred to as elliptical shaft portions) on both side surfaces, and a pair of L-shaped or V-shaped shaft portions. Are hook members 11a and 11b, and a spring locking portion 11c is formed at an upper position. The elliptical shaft portion 18 is incorporated into the case body 10 in a state where the elliptical shaft portion 18 is engaged with the traveling guide grooves 12, and is provided so as to be able to reciprocate along the traveling guide groove 12. Also, the pair of hook pieces 11a and 11b are in a state where at least one hook piece 11a (11b) faces the engaging pin guide groove 16 so as to be able to engage with the pin member 15. ing. Specifically, the one-side hook piece 11a engages (contacts) with the engaging pin 15 when the sliding door 2 is closed, and the other-side hook piece 11b engages with the engaging pin 15 when the sliding door 2 is opened. (Contact).
[0019]
On the other hand, one end of the spring member 14 is locked by a spring locking pin 9 a provided at the door-tight side position of the spring member housing 9, and the other end is locked by a spring locking portion 11 c of the guide member 11. The guide member 11 is locked so as to urge the guide member 11 in the door closing direction.
[0020]
As shown in FIG. 4, in the door closing device 8, when the sliding door 2 is opened, the engagement pin 15 causes the guide member 11 to move through the hook piece 11 b at the door opening side end of the travel guide groove 12. By rotating, the elliptical shaft portion 18 is in a vertically oriented state and is stopped and held by the vertical groove temporary stop portion 13. Thereafter, when the sliding door 2 is closed, as shown in FIG. 5, the engaging pin 15 rotates the guide member 11 via the hook piece 11a, and when the elliptical shaft portion 18 rotates 90 degrees, the sliding guide 2 moves to the traveling guide groove 12. The other side hook piece 11b, together with the engaging pin 15, assists the sliding door 2 to the door closing position by the urging force of the spring member 14 when the sliding door 2 enters.
[0021]
Hereinafter, the behavior of the guide member 11 during the closing operation and the opening operation of the sliding door 2 will be further described with reference to FIGS. 7 and 8.
[0022]
In a state where the sliding door 2 is opened, the door closing device 8 is in a state where the guide member 11 is held at the vertical groove temporary stop portion 13 as shown in FIG. When the sliding door 2 is closed from this state, as shown in FIG. 7A, the engagement pin 15 enters through the opening of the engagement pin guide groove 16 and the engagement pin 15 projects toward the engagement pin guide groove 16. It comes into contact with one side hook piece 11a of the member 11. When the sliding door 2 is moved in the closing direction as it is, the engaging pin 15 pushes out the one-side hook piece 11a in the door closing direction, and rotates the guide member 11 in the counterclockwise direction to release the temporary stop state of the guide member 11. . At this time, as shown in FIG. 8, the elliptical shaft portion 18 of the guide member 11 rotates around the upper bending point G of the boundary between the traveling guide groove 12 and the vertical groove temporary stop portion 13 as a fulcrum. Therefore, when the elliptical shaft portion 18 starts rotating, the elliptical shaft portion 18 immediately enters the traveling guide groove 12 while sliding, so that the stop state can be released smoothly with a small force. It has become.
[0023]
When the elliptical shaft portion 18 is in a substantially horizontal state, as shown in FIG. 7C, the other hook piece 11b of the guide member 11 is adjacent to the door opening side position of the engagement pin 15 (left side in the drawing). In this state, the guide member 11 moves to the door-tight side while being guided by the traveling guide groove 12 by the urging force of the spring member 14, and assists in closing the sliding door 2.
[0024]
On the other hand, when the sliding door 2 is opened from the closed state, the engaging pin 15 moves the other hook piece 11b in the door opening direction, and the other end of the travel guide groove 12 is opened via the other hook piece 11b. The guide member 11 is rotated to bring the elliptical shaft portion 18 into a vertical state, and is stopped and held by the vertical groove temporary stop portion 13.
[0025]
In the above embodiment, the door closing device 8 disposed on the upper right side of the sliding door 2 has been described. However, the same applies to the door closing device 8 mounted symmetrically on the upper left side.
[0026]
(Other examples)
(1) In the above embodiment, the example in which the present invention is applied to the sliding door 2 provided in the opening of the storage shelf 1 is described in detail, but the present invention can be applied to sliding doors in general.
[0027]
【The invention's effect】
According to the present invention as described in detail above, the guide member is urged in the door-locking direction by the spring member, and includes a guide member that is reciprocally movable between a door-locking position and a temporary stop position that is separated from the door-locking position. During the closing operation of the sliding door, an engaging pin provided on the sliding door runner guided along the traveling rail engages with the guide member stopped at the temporary stop position, and the engaged state is maintained. In the sliding door door closing device that assists the sliding door to the door closing position by the urging force acting on the guiding member, the guiding member stopped at the temporary stop position is stopped smoothly with a slight force when the sliding door is closed. You can unlock it.
[Brief description of the drawings]
FIG. 1 is a front view of a storage shelf 1 using a sliding door closing apparatus according to the present invention.
FIG. 2 is a view taken along line II-II in FIG.
FIG. 3 is a perspective view of the door closing device 8 according to the present invention.
4A is a front view of the door locking device 8 with the sliding door 2 opened, and FIG. 4B is a plan view of the door locking device 8. FIG.
FIG. 5 is a front view of the door closing device 8 when the sliding door 2 is closed.
6A is a front view and FIG. 6B is a side view showing the guide member 11. FIG.
FIGS. 7A to 7C are stage diagrams showing the behavior of the guide member 11 when the sliding door 2 is closed.
FIG. 8 is an enlarged view showing a rotation locus of the elliptical shaft portion 18 when the guide member 11 is released from the stopped state.
FIG. 9 is a front view showing a sliding door closing device 50 according to a conventional example.
FIG. 10 is a view showing a rotation locus of an elliptical shaft portion 56 in a conventional door closing device 50.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Storage shelf, 2 ... Sliding door, 3A ... Upper frame, 3B ... Lower frame, 3C / 3D ... Vertical frame, 4 ... Running rail, 5 ... Lower rail, 6 ... Runner, 8 ... Door closing device, 10 ... Case body, DESCRIPTION OF SYMBOLS 11 ... Guide member, 11a / 11b ... Hook piece, 12 ... Travel guide groove, 13 ... Vertical groove part (temporary groove temporary stop part), 14 ... Spring member, 15 ... Engagement pin, 16 ... Engagement pin guide groove, 18 … Elliptical shaft

Claims (2)

A guide member that is urged in the door-tightening direction by a spring member and that can be reciprocated between a door-closing position and a temporary stop position that is separated from the door-closing position is provided. An engaging pin provided on the sliding door runner guided by the engaging member engages with the guiding member stopped at the temporary stop position, and the sliding door is moved by the urging force acting on the guiding member in this engaged state. A sliding door door locking device that assists to a door closing position,
The door closing device is a traveling guide groove formed along the horizontal direction to guide the guiding member, a temporary stop portion of the guiding member formed at the door opening side end position of the traveling guide groove, A case body formed with an engagement pin guide groove formed along the horizontal direction, with the opening facing the door opening direction side for guiding the engagement pin,
It has a substantially elliptical shaft portion that engages with the travel guide groove, is provided so as to be able to reciprocate along the travel guide groove, includes a pair of hook pieces, and is configured to be able to engage with the engagement pin. A guide member with at least one hook piece facing the engagement pin guide groove,
One end is locked to the case main body, and the other end is locked to the guide member, comprising a spring member for urging the guide member in the door-tight direction,
The temporary stop portion of the guide member is a vertical groove portion that is continuously bent upward from the door opening side end of the travel guide groove, and when the sliding door is opened, the engaging pin is formed in the travel guide groove. By rotating the guide member via the hook piece at the door opening side end, the substantially elliptical shaft portion is in a vertical state, the guide member is held at the temporary stop portion, and at the time of the closing operation of the sliding door, The engagement pin rotates the guide member through the hook piece, and the substantially elliptical shaft portion of the guide member rotates around the upper bending point of the boundary between the travel guide groove and the temporary stop portion as a fulcrum. A sliding door closing device, wherein the temporary stop state is released. The door closing device for a sliding door according to claim 1, wherein the vertical groove portion of the temporary stop portion has a door opening side wall surface formed in an arc shape.

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