JP4319687B2 - Door closing device and door closing device for sliding door - Google Patents

Description

  The present invention relates to various storage furniture such as cupboards, book shelves, display shelves, cabinets or room partitions, especially when the doors are brought close to the door closing side end, even when the doors are close to each other. The present invention relates to a door closing device and a door closing device for a sliding door that can perform a favorable door closing operation while the speed of the sliding door is appropriately reduced.

Conventionally, various storage furniture such as cupboards, bookshelves, display shelves, etc. are often equipped with sliding doors equipped with glass windows. If this sliding door is a small frontage storage furniture, a guide rail is formed above and below the frontage portion, and an extremely simple structure in which the upper and lower ends of the glass plate are inserted into the guide rail is provided. However, in high-quality furniture and high-quality cabinets, the sliding door opening and closing operations are required to be heavy and elegant. In particular, sliding doors used as large furniture or room partitions are particularly large, and therefore the weight of the sliding door itself is extremely large.
JP 2006-63719 A

  Since such a large sliding door is heavy, once the sliding door starts to move, there is a possibility that it will have a large impact on the frame of the cabinet due to the momentum of the sliding door. Such a state deteriorates the quality of the furniture and is not suitable as a characteristic of high-quality furniture or a cabinet. Furthermore, in a sliding door used as a room partition, there is a demand for quietness in operation, and as described above, there is a risk of having a large impact and coming into contact with the door. Sliding doors are by no means suitable for high-end rooms. In addition, when trying to prevent the door closing collision state at the door closing side end of the sliding door as described above, the momentum of the sliding door closing operation will be reduced as much as possible. It tends to be incomplete.

  This also causes the furniture quality to deteriorate. In addition, in the case of having a buffer function in the door closing operation of the sliding door, the device is often increased in size, and therefore the door closing device is exposed to the outside of the sliding door device, and an extra space is required. Appearance will also be impaired. In Patent Document 1, there is a disadvantage that the door closing device is exposed to the outside of the sliding door device, an extra space is required, and the appearance is also impaired. Furthermore, the closer is required for each of the left and right sides of the sliding door, and has the disadvantage of being expensive. When opening the sliding door, depending on the position of the handle, a moment is applied to the sliding door in the moving direction, and the sliding door may be inclined with respect to the guide rail, and the opening / closing operation may be difficult to stabilize.

  For this reason, the problem (technical problem or purpose) to be solved by the present invention is to appropriately reduce the speed of the sliding door just before the closing of the door, and to improve the operation when opening and closing the sliding door. It is to realize that the installation space of the closed device is reduced and the assembly of the device is extremely simple.

  In view of the above, the inventor has intensively and researched to solve the above-mentioned problems, and as a result, the invention of claim 1 is made up of a rod-like casing having locking grooves on both ends in the longitudinal direction, a cylinder portion, and a piston rod. A shock absorber, a hook member pivotally supported at the base end of the cylinder part and the tip of the piston rod, and a tension elastic body provided between both opposing hook members, the hook member on at least one side being The above-described problems have been solved by using a door closing tool that is locked in the locking groove of the rod-shaped casing.

  According to a second aspect of the present invention, in the first aspect, a guide member is fixed to the middle of the rod-shaped casing, the cylinder portion is loosely inserted into the guide portion of the guide member, and the cylinder portion slides on the guide member. The above-described problem has been solved by using a door closing tool characterized by being configured to be movable. The invention according to claim 3 is characterized in that, in claim 1 or 2, a locking projection formed on the hook member is locked in the locking groove by a tensile elastic body between the hook members. The above problem was solved by using a door closing tool. According to a fourth aspect of the present invention, in the first, second or third aspect, the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel. The above-mentioned problem has been solved by using a door closing device characterized by the following.

  According to a fifth aspect of the present invention, the above-described problem is solved by using the door closing tool according to the fourth aspect, wherein the air damper is provided with a pressure adjusting portion capable of appropriately adjusting the pressure. According to a sixth aspect of the present invention, in the first, second, third, fourth, or fifth aspect, the hook member includes a hook portion and a rotation base portion, and the hook portion includes a triangular locking portion and a rising contact. The above-described problem has been solved by providing a door closing tool characterized in that a contact portion is formed through a recess and the tensile elastic body is stretched between the rotating base portions of the hook members. According to a seventh aspect of the present invention, the above problem is solved by using the door closing tool according to the first, second, third, fourth, fifth or sixth aspect, wherein the tension elastic body is a tension coil spring. According to an eighth aspect of the present invention, in the first, second, third, fourth, fifth, sixth, or seventh aspect, the hook member is pivotally supported by attachment members provided at a base end of the cylinder portion and a piston rod front end, respectively. The above problem was solved by using a door closing tool characterized by

  The invention according to claim 9 is pivotally supported on a rod-shaped casing having locking grooves on both ends in the longitudinal direction, a buffer damper composed of a cylinder portion and a piston rod, a base end of the cylinder portion and a tip end of the piston rod. A door closure composed of a hook member and a tension elastic body provided between the opposing hook members is provided on the upper part of the sliding door in various storage furniture such as cupboards and display shelves, cabinets or room partitions, Fixing protrusions for releasing the locking of the hook member to the locking groove of the rod-shaped casing are provided in the vicinity of both locations where the guide rail for sliding the sliding door closes, and the hook member on at least one side is provided with The above problem has been solved by using a door closing device that is locked in the locking groove of the rod-shaped casing.

  According to a tenth aspect of the present invention, in the ninth aspect, the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel. By using a door closing tool, the above problems were solved. According to an eleventh aspect of the present invention, the above-described problem is solved by using the door closing device according to the tenth aspect, wherein the air damper is provided with a pressure adjusting portion capable of appropriately adjusting the pressure. According to a twelfth aspect of the invention, the above-mentioned problem is solved by using a door closing device according to the ninth, tenth or eleventh aspect, wherein the tension elastic body is a tension coil spring.

  The invention of claim 13 is pivotally supported on a rod-shaped casing having locking grooves on both ends in the longitudinal direction, a buffer damper composed of a cylinder portion and a piston rod, a base end of the cylinder portion and a tip end of the piston rod. A door closing tool composed of a hook member and a tension elastic body provided between both opposing hook members is provided at the lower part of the sliding door in the room partition, and is disposed immediately below the guide rail for sliding the sliding door, A fixing projection is provided in the vicinity of the location where the door is closed as appropriate, so that the hook member releases the locking to the locking groove of the rod-shaped casing, and at least one of the hook members serves as the locking groove of the rod-shaped casing. The above-described problem has been solved by using a door closing device characterized by being locked.

  According to a fourteenth aspect of the present invention, in the thirteenth aspect, the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel. By using a door closing tool, the above problems were solved. According to a fifteenth aspect of the present invention, there is provided a door closing device according to the fourteenth aspect, wherein the air damper is provided with a pressure adjusting portion capable of appropriately adjusting the pressure. According to a sixteenth aspect of the present invention, there is provided a door closing device according to the thirteenth, fourteenth or fifteenth aspect, wherein the tension elastic body is a tension coil spring, thereby solving the above-mentioned problems.

  According to the invention of claim 1, the door closing tool in the present invention requires two for closing the left and for closing the right when closing one sliding door in the left direction or closing in the right direction. One has the greatest advantage of having both functions. Moreover, it can be made extremely compact and can be easily mounted in a small space of the sliding door device. Furthermore, it is rod-shaped, can be configured simply, and can be provided at low cost. In the invention of claim 2, in particular, the cylinder portion is loosely inserted into the guide portion of the guide member, and the cylinder portion is configured to be slidable with respect to the guide member. There is. The invention of claim 3 has the same effect as that of the invention of claim 1 or 2.

  In the invention of claim 4, since the buffer damper is configured as an air damper, shock absorption can be improved and a product having an excellent buffer effect can be obtained. According to the fifth aspect of the present invention, it is possible to easily adjust the buffer effect, and to adjust the shock absorption corresponding to the weight and size of the sliding door. According to the sixth aspect of the present invention, it is possible to provide a door closing tool that performs a reliable operation as a specific configuration. In the invention of claim 7, since the tension elastic body is a tension coil spring, handling and adjustment can be simplified, and operability can be improved over a long period of time. In the invention of claim 8, the mounting structure can be simplified with respect to the buffer damper or the air damper.

  In the invention of claim 9, by using a door closing device provided with a door closing device on the upper part of the sliding door, when closing one sliding door in the left direction or in the right direction, it is for left closing, for right closing The two functions can be provided by one unit, can be made extremely compact, and can be easily mounted in a small space of the sliding door device. Furthermore, it can be made a simple configuration and can be provided at a low cost. In the invention of claim 10, since the buffer damper is configured as an air damper, shock absorption can be improved and a product having an excellent buffer effect can be obtained. According to the eleventh aspect of the present invention, the adjustment of the buffer effect can be simplified, and the impact absorption corresponding to the weight and size of the sliding door can be adjusted. In the invention of claim 12, since the tension elastic body is a tension coil spring, handling and adjustment can be simplified and operability can be improved over a long period of time.

  In the invention of claim 13, by using a door closing device provided with a door closing device at the lower part of the sliding door, when closing one sliding door in the left direction or closing in the right direction, for left closing, for right closing The two functions can be provided by one unit, can be made extremely compact, and can be easily mounted in a small space of the sliding door device. Furthermore, it can be made a simple configuration and can be provided at a low cost. According to the fourteenth aspect of the present invention, since the buffer damper is configured as an air damper, shock absorption can be improved and a product having an excellent buffering effect can be obtained. According to the fifteenth aspect of the present invention, the adjustment of the buffer effect can be simplified, and the shock absorption corresponding to the weight and size of the sliding door can be adjusted. In the invention of claim 16, since the tension elastic body is a tension coil spring, handling and adjustment can be simplified, and operability can be improved over a long period of time.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, as shown in FIG. 1, FIG. 3, FIG. 4, FIG.
It is composed of a buffer damper 3, a hook member 4, and a tensile elastic body 5. The rod-shaped casing 1 includes a casing body 11 having a relatively long length in the longitudinal direction and end members 12 and 12, and groove-shaped locking grooves 12 a and 12 a are formed in the end member 12. . Specifically, arc-shaped locking grooves 12 a and 12 a are formed as the same groove on both sides of the end member 12. The tensile elastic body 5 naturally includes metallic coil springs, but also includes elastic bodies such as synthetic rubber.

  As shown in FIG. 2D, the guide member 2 has a cylindrical guide portion 21 formed at the upper portion, and attachment pieces 22, 22 formed at the lower side of the guide portion 21. It is attached to the front and rear sides of the rod-shaped casing 1 via the attachment pieces 22 and 22. Further, as shown in FIG. 2E, it may be formed as a U-shaped guide 23 having a U-shaped cross section. As shown in FIG. 1 and the like, the buffer damper 3 includes a cylinder part 31, a piston rod 32, a pressure adjusting part 33, and a liquid or gas (air). The liquid is a liquid such as oil or gel-like grease, or air (air). In the case of a liquid, as long as it is a viscous liquid, it is not limited to the said material and substance.

  The buffer damper 3 is often configured as an air damper 30. The cylinder part 31 has a sealing property so that these liquids do not leak. In the cylinder part 31 in the liquid, a return spring is attached if necessary, and the piston rod 32 may be elastically biased so as to be constantly protruded from the cylinder part 31. is there. The guide member 2 is fixed in the middle of the rod-shaped casing 1, and the cylinder portion 31 is loosely inserted into the guide portion 21 of the guide member 2, and the cylinder portion 31 is configured to be slidable with respect to the guide member 2. ing.

  The pressure adjusting unit 33 is provided with a known configuration that accelerates or slows the flow of liquid. The pressure adjusting unit 33 for controlling the air amount is provided with a needle valve 33a and a rotation operation unit 33b that can adjust the air amount. 33c and 33d are air holes, and 33e is a cover part through which air can flow. By tightening or loosening the needle valve 33a, the amount of air escape is adjusted to appropriately cope with the impact force. When the air damper 30 is configured, the shock absorption can be improved and a product having an excellent buffering effect can be obtained, and the pressure adjusting unit 33 can be easily adjusted.

  The hook member 4 is pivotally supported by a base end (right end in FIG. 1) of the cylinder portion 31 and the tip end of the piston rod 32 (left end in FIG. 1) either directly or via attachment members 6 and 7, respectively. ing. The hook member 4 includes a substantially U-shaped hook portion 41, a rotation base portion 42, and a locking projection 43.

  Specifically, as shown in FIG. 1 and FIG. 2, the hook portion 41 has a rising contact portion 41c via a recess 41b on the rear side of the triangular locking portion 41a on the tip side. Is formed. That is, the triangular locking portion 41a, the recessed portion 41b, and the contact portion 41c are substantially U-shaped. Abutted pieces (fixed protrusions 110 and the like to be described later) that are fixed at appropriate positions are inserted and locked in the recessed portions 41b. The abutted piece is attached in the vicinity of the door closing side of the sliding door 100 in various storage furniture such as cupboards, book shelves, display shelves, cabinets or room partitions.

  Further, the hook member 4 is provided with an attachment member 6 at the base end (right end in FIG. 1) of the cylinder portion 31 and an attachment member 7 at the tip of the piston rod 32 (left end in FIG. 1). The shaft 42a is rotatably supported. The mounting member 6 is configured by providing inverted T-shaped portions 61, 61 symmetrically with the rear portion being connected by a connecting piece 62. An engaging groove 62a for engaging the end engaging portions 51, 51 on both ends of the tensile elastic body 5 is formed at the center of the connecting piece 62.

  The rotation base portion 42 of the hook member 4 is pivotally supported 42 a on the attachment member 7 at the base end (right end in FIG. 1) of the cylinder portion 31. Further, as shown in FIG. 2 (F), the mounting member 7 is composed of a main body 71 having a U-shaped cross section when viewed from above, and the other side of the tensile elastic body 5 on the lower side of the rear wall piece. An engaging groove 71a for engaging the side end engaging portion 51 is formed. The tension elastic body 5 is often used as a tension coil spring 52.

  Further, as shown in FIGS. 2D and 2E, the locking protrusions 43, 43 of the hook member 4 are formed to protrude to the left and right sides on the tip side of the hook portion 41. The locking projection 43 is configured to be locked in the locking groove 12 a of the rod-shaped casing 1. In the normal state of the door closing tool of the present invention, as shown in FIG. 1, the tensile elastic body 5 is stretched between the mounting members 6 and 7, which are between the hook members 4 and 4. In the present invention, a very important point is a very simple shape and structure as a door closing tool, and it can be satisfactorily closed on the right side or the left side with respect to the open / close door, etc., and there is only one product of the present invention. It is an invention that can be satisfactorily handled by members.

  A structure in which the door closing tool of the present invention is attached to the sliding door 100 will be described with reference to FIGS. On the left and right sides of the upper side of the sliding door 100, there are provided guide travel portions 101, 101 by rolls, and the guide travel portions 101, 101 are interposed between the guide end portions 12b, 12b of the door closing tool of the present invention. It is attached [see FIG. 6 (D)]. The guide travel portions 101 and 101 are configured to be able to roll on guide rails 102 provided on a ceiling or a top plate-like material. The guide travel unit 101 is a hang roller type corresponding to the guide rail 102. The guide travel unit 101 includes a travel main body 101a and roller units 101b and 101b. Further, depending on the width of the sliding door 100, since the door closing tool having a predetermined length according to the present invention is used, the auxiliary guide traveling unit 103 may be provided as shown in FIG.

  FIG. 6 shows an operation that can be closed to the left and right in a variety of storage furniture and cabinets such as a cupboard, a book shelf, and a display shelf as shown in FIG. It demonstrates based on thru | or FIG. The left closing action is a case where the left closing part is brought into contact with the left closing part in FIGS. Moreover, there is also a concept of the door closing side and the door opening side, and in FIGS. 6 to 8 and 13, the direction from the right side to the left side is the door closing side, but in the case of FIG. In this specification, it is described as left closed or left closed open, right closed or right closed open because it is a door closed side or a door open side. In FIG. 13, W0 is a free state area that can move to the left and right sides at a free speed (high speed, etc.), and W1 is a low speed area when the sliding door 100 is moved when left or right closed. .

  First, the operation of closing the left will be described with reference to FIGS. As shown in FIG. 6, the sliding door 100 is movable while the locking projections 43 of the left and right hook members 4, 4 are locked in the locking grooves 12 a on the left and right sides of the rod-like casing 1. It has become. A position where the locking protrusion 43 of the hook member 4 is locked in the locking groove 12a is defined as a fixed position. In this case, the left and right sides of the home position are present. Then, the sliding door 100 in the open state moves to the left in FIG. This detailed state is as shown in FIG.

  Next, the hook member 4 comes close to the fixed protrusion 110, and at that moment, the contact portion 41c of the hook member 4 contacts the fixed protrusion 110 as shown in FIGS. At this moment, as shown in FIGS. 7A and 7B, the hook member 4 is rotated. At this time, the hook member 4 is locked to the fixed protrusion 110. That is, the fixed protrusion 110 and the hook member 4 are integrated. Further, at this moment, the load and acceleration of the sliding door 100 are applied, and the hook member 4 is brought into an impact state, and the impact force is buffered by the buffer damper 3. This action will be described in detail.

  This buffering action allows the buffer damper 3 to rapidly reduce the vigorous speed V to the low speed v, and at the same time, the position of the sliding door 100 can be brought closer to the door closing side instantly. In other words, the piston rod 32 contracts by the distance Lx during buffering. In order to change from the state of FIGS. 7 (A) and 7 (B) to the state of FIGS. 7 (C) and 7 (D), a buffering action is made instantaneously (a few seconds of 100 minutes or less). Briefly, the states of FIGS. 7A and 7B and the states of FIGS. 7C and 7D are performed almost simultaneously.

When the piston rod 32 of the buffer damper 3 is pulled into the cylinder portion 31, the liquid or air filled therein becomes the resistance force R, and the elastic force F of the tension elastic body 5 is reduced, thereby the hook. The speed of the member 4 in the door closing direction is decreased, and the member 4 is moved to the rear side of the rod-shaped casing 1. 7C and 7D, the sliding door 100 is moved at a low speed v by the elastic force F of the tensile elastic body 5 this time. That is, assuming that the resistance force R by the buffer damper 3 is a normal speed that is not during an impact, the force obtained by removing the resistance force R while contracting the piston rod 32 from the elastic force F of the tensile elastic body 5 pulls the sliding door 100. Force: P.
That is, P = F−R.

  As shown in FIGS. 8A and 8B, the door is closed at a considerably slow speed v. In FIG. 8A and FIG. 8B, although it is trying to hit the door closing side, it moves further to the left side at a low speed v. And like the state of FIG.8 (C) and (D), the left side of the sliding door 100 contact | abuts to the door closing side, and a movement stops. Also at this time, it is necessary that the piston rod 32 is not completely contracted but remains even for a short stroke. If it is not in this state, the door closing action by the elastic force F of the tensile elastic body 5 does not occur.

  In particular, in the state of FIGS. 7C and 7D, the fixing protrusion 110 and the hook member 4 are integrated while the hook member 4 is rotated counterclockwise by the elastic force of the tensile elastic body 5 and integrated. The locking projections 43, 43 of the hook member 4 are slidable while being in contact with the upper edges of the left and right side portions 11a, 11a of the rod-like casing 1, so that the hook member 4 is released. 4 is configured so that it cannot be released. In the above left closed state, the right side where the locking projection 43 of the hook member 4 is locked in the locking groove 12a functions as a fixed position. Further, when the hook member 4 urged by the tensile elastic body 5 is not locked in the locking groove 12a, the hook member 4 is configured to be locked to the fixed protrusion 110, and the hook member 4 is movable.

  Next, the operation of releasing the left closing will be described. This is reversed from the states of FIGS. 8C and 8D, as shown in FIGS. 6A and 6B. First, the sliding door 100 is moved rightward from the states of FIGS. As described above, since the force P (= FR) is applied to the sliding door 100 in the left direction, the sliding door 100 is moved in the right direction with a force larger than the force P. Further, while extending the piston rod 32, the state shown in FIGS. 8 (A) and (B) is changed to the state shown in FIGS. 7 (C) and (D), and further from the state shown in FIGS. 7 (C) and (D). It moves to the state of FIG. 7 (A) and (B).

  7 (A) and 7 (B), as shown in FIGS. 6 (C) and 6 (D), the locking protrusion 43 of the hook member 4 is locked to the left side of the rod-shaped casing 1 as shown in FIGS. At the same time as the position of the groove 12a, the locking projection 43 of the hook member 4 rotates counterclockwise and is locked to the locking groove 12a on the left side of the rod-shaped casing 1. At this time, as shown in FIG. 1 (A) or FIGS. 6 (A) and (B), the locking projections 43 of the hook member 4 are locked in the locking grooves 12a and 12a on the left and right sides of the rod-shaped casing 1. Then, the force P (= F−R) of the door closing device does not work, that is, the sliding door 100 can be suddenly lightened and moved. The state of the sliding door 100 is a state in which the left closing force P (= FR) is released.

  Next, the right closing operation will be described with reference to FIGS. As shown in FIGS. 9A and 9B, the latching protrusions 43 of the left and right hook members 4 and 4 are held in the latching grooves 12 a on the left and right sides of the rod-like casing 1. The sliding door 100 is movable. This state is the same as that shown in FIG. Then, the sliding door 100 in the opened state is moved to the right in FIG. This detailed state is as shown in FIG.

  Then, the hook member 4 comes close to the fixed protrusion 110, and at that moment, the contact portion 41c of the hook member 4 contacts the fixed protrusion 110 as shown in FIGS. At this moment, as shown in FIGS. 10A and 10B, the hook member 4 is rotated counterclockwise. At this time, the fixed protrusion 110 and the hook member 4 are integrated. Further, at this moment, the load and acceleration of the sliding door 100 are applied, and the hook member 4 is brought into an impact state, and the impact force is buffered by the buffer damper 3. This action is the same as the left closing action, but this time the role of the movable member is changed.

  This buffering action allows the buffer damper 3 to rapidly reduce the speed V to a low speed v and simultaneously bring the sliding door 100 closer to the door closing side. In other words, the piston rod 32 contracts by the distance Lx during buffering. Certainly, the piston rod 32 is contracted, but the tip of the piston rod 32 is in a fixed state, and the cylinder portion 31 moves in the guide portion 21. Thereafter, the tip is held in a fixed state. Next, the buffering action is instantaneously (a few hundredths of a second or less) from the state of FIGS. 10A and 10B to the state of FIGS. 10C and 10D. Briefly described, the states of FIGS. 10A and 10B and the states of FIGS. 10C and 10D are performed almost simultaneously.

  10 (C) and 10 (D), the sliding door 100 is moved at the low speed v by the elastic force F of the tensile elastic body 5 this time. The point is the same as the above-described left closing action. Further, from the state of FIGS. 11A and 11B to the completion of the right closing of the state of FIGS. This is the same as the action of closing left. Therefore, the description thereof is omitted. In the state of the right closing operation described above, the left side where the locking projection 43 of the hook member 4 is locked in the locking groove 12a functions as a fixed position. Also, the action of releasing the right closing will be described. This is performed in reverse from the states of FIGS. 11C and 11D, as shown in FIGS. 9A and 9B. The point that the cylinder portion 31 moves in the guide portion 21 is as follows. Except for this, it is the same as the above-described left-closing release action, and this description is omitted.

  Next, a configuration in which the door closing tool of the present invention is attached to the lower part of the sliding door 100 will be described with reference to FIG. Guide running portions 101, 101 by rolls are provided on the left and right sides of the upper side of the sliding door 100, and are attached to the lower side of the sliding door 100 via both end attachment pieces 12b, 12b of the door closing tool of the present invention. ing. In this case, a fixed protrusion 110 protruding on the floor is provided. When the fixing protrusion 110 is kept only on the floor, it is performed by a known technique so as to sink to the floor surface. The left closing, the left closing cancellation, the right closing, and the right closing cancellation are the same as when the present invention is attached to the upper part of the sliding door 100, and the description is omitted.

(A) is the front view made into the partial cross section of the door closing tool of this invention, (B) and (C) is a partial perspective view of (A), (D) is a perspective view of a guide receiving member, (E) (D) is a perspective view of the guide receiving member of another embodiment different from (D). (A) is a front view with a partial cross-section of the present invention, (B) is a plan view with a partial cross-section of a hook member location, (C) is a partial cross-sectional view of the hook member and the casing body, (D) is The perspective view of a hook member location, (E) is the perspective view of a hook member, (F) is the perspective view which partially cut away the attachment member. (A) is a partial front view of the present invention, (B) is a plan view with a partial cross section of a hook member portion, (C) is a perspective view of the hook member portion, and (D) and (E) are mounting members. It is a perspective view. (A) And (B) is the front view made into the partial cross section of the door closing tool of this invention. It is sectional drawing of the cylinder part, piston rod, and pressure adjustment part of a buffer damper. (A), (B), (C) and (D) are action diagrams of the start state of the left closing. (A), (B), (C) and (D) are operation diagrams in the middle of the left closing. (A), (B), (C) and (D) are operation diagrams immediately before the end of the left closing and in the state of the end of the left closing. (A), (B), (C) and (D) are action diagrams of the start state of right closing. (A), (B), (C) and (D) are operation diagrams in the middle of the right closing. (A), (B), (C) and (D) are operation diagrams immediately before the end of the right closing and in the state of the end of the right closing. (A), (B) is a partial attachment figure of the upper part which attached this invention to the sliding door, (C) is a XX arrow directional view of (B). (A) is the front view which attached this invention to the upper part of a sliding door, (B) is the front view made into the partial cross section which attached this invention to the lower part of a sliding door.

DESCRIPTION OF SYMBOLS 1 ... Rod-shaped casing, 12a ... Locking groove, 2 ... Guide member, 21 ... Guide part,
3 ... buffer damper, 30 ... air damper, 31 ... cylinder part, 32 ... piston rod,
33 ... Pressure adjusting part, 4 ... Hook member, 41 ... Hook part, 41a ... Locking part,
41b ... dent, 41c ... abutment, 42 ... rotating base, 42a ... shaft support, 43 ... locking projection,
5 ... tension elastic body, 52 ... tension coil spring, 6, 7 ... mounting member, 100 ... sliding door,
102 ... guide rail, 110 ... fixing protrusion.

Claims (16)

A rod-shaped casing having locking grooves on both ends in the longitudinal direction, a buffer damper composed of a cylinder portion and a piston rod, a hook member pivotally supported at the base end of the cylinder portion and the tip end of the piston rod, A door closing tool comprising a tension elastic body provided between hook members, wherein at least one of the hook members is locked in a locking groove of the rod-like casing.   2. The guide member according to claim 1, wherein a guide member is fixed in the middle of the rod-shaped casing, the cylinder portion is loosely inserted into the guide portion of the guide member, and the cylinder portion is configured to be slidable with respect to the guide member. A door closure characterized by that.   The door closing tool according to claim 1 or 2, wherein a locking protrusion formed on the hook member by a tensile elastic body between the hook members is locked in the locking groove.   4. The door closing tool according to claim 1, wherein the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel. .   5. The door closing device according to claim 4, wherein the air damper is provided with a pressure adjusting unit capable of appropriately adjusting the pressure.   6. The hook member according to claim 1, wherein the hook member includes a hook portion and a rotation base portion, and the hook portion includes a triangular locking portion and a rising contact portion via a recess portion. The door closing tool is characterized in that the tension elastic body is stretched between the rotation bases of the hook members.   The door closing tool according to claim 1, 2, 3, 4, 5 or 6, wherein the tension elastic body is a tension coil spring.   8. The hook member according to claim 1, wherein the hook member is pivotally supported by attachment members respectively provided at a base end of the cylinder portion and a tip end of the piston rod. Door closure.   A rod-shaped casing having locking grooves on both ends in the longitudinal direction, a buffer damper composed of a cylinder portion and a piston rod, a hook member pivotally supported at the base end of the cylinder portion and the tip end of the piston rod, A guide rail is provided with a door closing tool made of a tension elastic body provided between hook members provided on the upper part of various storage furniture such as cupboards and display shelves, cabinets or room partitions, and sliding the sliding doors. The hook member is provided with a fixing projection for releasing the locking to the locking groove of the rod-shaped casing, and the hook member on at least one side is the locking groove of the rod-shaped casing. A door closing device that is locked to the door.   10. The door closing device according to claim 9, wherein the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel.   The door closing device according to claim 10, wherein the air damper is provided with a pressure adjusting unit capable of appropriately adjusting the pressure.   12. The door closing device according to claim 9, 10 or 11, wherein the tension elastic body is a tension coil spring.   A rod-shaped casing having locking grooves on both ends in the longitudinal direction, a buffer damper composed of a cylinder portion and a piston rod, a hook member pivotally supported at the base end of the cylinder portion and the tip end of the piston rod, A door closing tool composed of a tension elastic body provided between the hook members is provided in the lower part of the sliding door in the room partition, and is arranged immediately below the guide rail for sliding the sliding door, and in the vicinity of the location where the door is closed appropriately. The hook member is provided with a fixing projection for releasing the locking to the locking groove of the rod-shaped casing, and at least one of the hook members is locked to the locking groove of the rod-shaped casing. A door closing device.   14. The door closing tool according to claim 13, wherein the buffer damper is configured as an air damper, and the longitudinal direction of the air damper and the longitudinal direction of the tensile elastic body are arranged substantially in parallel.   15. The door closing device according to claim 14, wherein the air damper is provided with a pressure adjusting unit capable of appropriately adjusting the pressure.   16. The door closing device according to claim 13, 14 or 15, wherein the tension elastic body is a tension coil spring.

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