JP2012021399A - Open/close apparatus having brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an open/close apparatus having a brake device capable preventing or suppressing generation of noise when a pinion gear meshes with a rack construction member in the case of employing a rotary brake device having a pinion gear meshing with a rack construction member for braking the movement of an open/close member.SOLUTION: A rotary brake device disposed on a door member that is an open/close member includes a pinion gear meshing with a rack construction member 50 arranged on a immovable member that is immovable relative to the door member. The rack construction member 50 is formed of a first rack member 70 and second rack members 71 and 72 that are arranged in an opening/closing movement direction of the door member. The second rack members 71 and 72 are arranged at positions closer to positions where the pinion gear starts meshing with the rack construction member 50 compared with the first rack member 70. The first rack member 70 is fixed to and retained by a retention member 51. The second rack members 71 and 72 are retained by the retention member 51 so as to be freely movable toward the first rack member 70.

Description

  The present invention relates to an opening / closing device with a brake device provided with a brake device for braking the movement of the opening / closing body, for example, an upper suspension type in which a door body serving as an opening / closing body is suspended from an upper guide member It can be used for an opening / closing device including a sliding door device.

  The following Patent Document 1 shows an opening / closing device with a brake device provided with a brake device for braking the movement of the opening / closing body. In this open / close device, a door body that is an open / close body is suspended from an upper guide member, a roller attached to the upper portion of the door body is mounted on the guide member in a freely rolling manner. The roller body that is guided by the guide member moves and opens and closes, and a brake device is attached to the stationary member that is stationary relative to the door body. When the closing door body reaches a predetermined position, the closing movement is braked by the brake device, whereby the door body reaches the fully closed position while the closing movement speed is reduced.

JP 2000-282758 A (FIG. 4)

  Although the above-described conventional brake device is of a cylinder type, a brake device that can be applied to an opening / closing device includes a rotary type. This rotary brake device is provided with a pinion gear, and this pinion gear meshes with and rotates with a rack structure having a length in the opening / closing movement direction of the door body, for example, by a viscous force of a viscous fluid. When braking force is generated and this rotary brake device is applied to an opening / closing device such as the sliding door device, the rotary brake device includes a door body and the stationary member to which the guide member is attached. The rack structure is attached to the other.

  Thus, when the brake device of the opening / closing device is a rotary brake device, a rack structure for rotating the pinion gear of the rotary brake device is used, and the rotary brake device is used as the opening / closing device. In order to effectively arrange the door, when the rotation center axis of the roller for opening and closing the door body along the guide member and the rotation center axis of the pinion gear of the rotary brake device are parallel or substantially parallel, Since the rollers and the rack structure that meshes with the pinion gear are arranged close to each other, the positional relationship between these rollers and the rack structure is set appropriately so that the rollers and the rack structure do not interfere with each other. Is required.

  An object of the present invention is to provide an opening / closing apparatus with a brake device that can eliminate interference between a roller that opens and closes the opening / closing body along a guide member and a rack structure that rotates a pinion gear of a rotary brake device. There is to offer.

  An opening / closing device with a brake device according to the present invention is an opening / closing device with a brake device, which includes an opening / closing body that opens and closes by rolling of a roller guided by a guide member, and a brake device that brakes the movement of the opening / closing body. The brake device includes a pinion gear having a rotation center axis that is parallel or substantially parallel to the rotation center axis of the roller, and the pinion gear has a length in the opening / closing movement direction of the opening / closing body. It is a rotary brake device that generates braking force by meshing with a rack structure and rotating. The rotary brake device is stationary with respect to the opening / closing body and the guide member is attached to the opening / closing body. Attached to one of the stationary members, the rack component is attached to the other, and the arrangement position of the roller and the Tsu and position of the click structure is characterized in that the offset in the axial direction of the rotation axis of the roller and the pinion gear.

  In this opening / closing device with a brake device, since the arrangement position of the roller and the arrangement position of the rack component are shifted in the axial direction of the rotation center axis of the roller and the pinion gear, the roller and the rack component are separated from each other. The gears can be moved away from each other in the axial direction of the rotation center axis of the gear. Therefore, the rack structural member and the roller do not interfere with each other, and the opening / closing member can be opened / closed along the guide member guided by the roller.

  In this opening / closing device with a brake device, if the arrangement position of the roller and the arrangement position of the rack body are shifted in the axial direction of the rotation center axis of the roller and the pinion gear, the rotation center axis of the roller and the rotation center of the pinion gear The positional relationship with the shaft is arbitrary. For example, the rotation center axis of the pinion gear may be shifted to the position where the rack component in the pinion gear meshes with the rotation center axis of the roller.

  That is, when the axial direction of the rotation center axis of the pinion gear is horizontal or substantially horizontal and the position where the rack component in the pinion gear meshes is the upper end of the pinion gear, The rotation center axis of the pinion gear may be shifted upward, and when the position where the rack component in the pinion gear meshes is the lower end of the pinion gear, the rotation center axis of the pinion gear is set with respect to the rotation center axis of the roller. If the axial direction of the rotation center axis of the pinion gear is the vertical direction and the position where the rack component in the pinion gear meshes with the right end of the pinion gear, the rotation of the roller The rotation center axis of the pinion gear may be shifted to the right with respect to the center axis, and the position where the rack component in the pinion gear meshes is the left end of the pinion gear. If that is, it may be shifted to the central axis of rotation of the pinion gear to the left with respect to the central axis of rotation of the roller.

  According to this, since the roller and the rack structure in which the pinion gear meshes are separated to the side where the rack structure in the pinion gear meshes, the rollers and the rack structure interfere with each other. It can be eliminated more effectively.

  Further, the rack structure may be held by a holding member, and the holding member may be attached to the stationary member or the opening / closing body.

  Further, when the rack structure is held by a holding member attached to the stationary member, it is preferable that the holding member and the guide member attached to the stationary member are engaged with each other and connected.

  According to this, the positional relationship between the rack structure held by the holding member and the guide member on which the roller rolls can be set more accurately than when the holding member and the guide member are not engaged with each other, As a result, the positional relationship between the pinion gear of the rotary brake device attached to the opening / closing body provided with the roller and the rack structure body that meshes with the pinion gear is also accurately set, so the rack structure body and the pinion Engagement with the gear can be made more reliable.

  As described above, when the holding member and the guide member are engaged and connected to each other, the structure of the engagement connecting portion connects the holding member to the guide member so as not to move in the opening / closing movement direction of the opening / closing body. The holding member may be connected to the guide member so as to be movable in the opening / closing movement direction of the opening / closing body, and the holding member is moved in the opening / closing movement direction of the opening / closing body, and then the holding member is fixed. It may be possible to couple to the member.

  According to the latter, by moving the holding member relative to the guide member in the opening / closing movement direction of the opening / closing body, the position where the pinion gear of the rotary brake device starts to mesh with the rack structure held by the holding member is opened / closed. It becomes possible to adjust in the opening / closing movement direction of the body, and thereby, it is possible to arbitrarily determine the generation start point of the braking force generated in the opening / closing body by the rotary brake device.

  Further, as described above, in order to more accurately set the positional relationship between the rack structure and the guide member, the guide member and the holding member are not formed as separate members, but the holding member is attached to the guide member. It may be formed as a part. That is, the guide member and the holding member may be integrated by forming the guide member as a part of the guide member provided with a portion corresponding to the holding member. Such a member can be formed by, for example, extrusion molding or pultrusion molding. In these extrusion molding or pultrusion molding, the portion corresponding to the holding member has a length over the entire length of the guide member. An unnecessary portion of the length may be cut out by post-processing, and the rack structure may be arranged only in a predetermined portion of the length without performing the cutting.

  Further, when the rack structure is held by the holding member as described above, the entire rack structure may be fixed to the holding member and held, or the rack structure may be the first rack member, The first rack member is formed to include a second rack member disposed at a position closer to the meshing start side of the pinion gear than the first rack member, and the first rack member is fixed to the holding member and held. The second rack member may be held by the holding member so as to be movable toward the first rack member.

  According to the latter, the engagement of the pinion gear of the rotary brake device to the rack structure starts from the second rack member, and this second rack member is held by the holding member so as to be movable toward the first rack member. Therefore, all or a part of the impact force when the pinion gear is engaged can be converted into a force by which the second rack member moves toward the first rack member. It is possible to eliminate or suppress the generation of abnormal noise that occurs when meshing with the structure.

  In addition, when it is possible to convert all or a part of the impact force when the pinion gear meshes in this way into a force by which the second rack member moves toward the first rack member, this conversion is further performed. In order to perform effectively, when the second rack member moves toward the first rack member, a resistance force due to a frictional force or the like generated between the second rack member and the holding member is applied to the second rack member. Alternatively, an elastic member such as a spring or rubber may be interposed between the first rack member and the second rack member, and the second rack member may be You may make it move toward 1 rack member.

  Further, as described above, the rack structure is arranged at a position closer to the meshing start side of the first rack member and the rack structure of the pinion gear than the first rack member, and moves toward the first rack member. In the case where the second rack member is formed so as to be free, the second rack member arranged on the side of the opening / closing movement direction of the opening / closing body with respect to the first rack member is only one side of the first rack member. For example, you may arrange | position only to the opening movement side of an opening-closing body with respect to a 1st rack member, and may arrange | position to the both sides of a 1st rack member.

  When the rotary brake device is attached to the opening / closing body and the rack component is attached to the stationary member, the number of rotary brake devices is two in the opening / closing movement direction of the opening / closing body. The pinion gear of one rotary brake device of the brake devices begins to mesh with the rack structure when the opening / closing body is moving toward the fully closed position, and the pinion gear of the other rotary brake device is When the opening / closing body is moving toward the fully open position, the opening / closing body may start to mesh with the rack structure.

  According to this, it is possible to apply a braking force to the open / close body both when the open / close body reaches the fully closed position and when the open / close body reaches the fully open position by the two rotary brake devices. The pinion gear of the device can be rotated by the same rack structure, and even if the number of rotary brake devices is two, the rack structure for these rotary brake devices can be shared.

  Further, in the present invention, when the rotary brake device is attached to the opening / closing body, the attachment positional relationship between the roller attached to the opening / closing body and the rotary brake device can be arbitrarily set. Is to attach a rotary brake to this bracket when the roller is attached to the opening / closing body via the bracket.

  According to this, since the bracket that attaches the roller to the opening / closing body also serves as a member for attaching the rotary brake device to the opening / closing body, the structure of the entire opening / closing device can be simplified by sharing the member.

  Furthermore, the present invention can be applied to both an opening / closing device provided with a door bag that houses an opening / closing body that has reached the fully open position, and an opening / closing device that does not include such a door bag. When the present invention is applied to an opening / closing device having a door pocket for storing the opening / closing body that has reached the fully opened position, a stop member for stopping the opening / closing body at the fully opened position is disposed at a position removed from the door pocket. It is preferable.

  According to this, since the stop member is not disposed inside the door pocket, but is disposed at a position exposed from the door pocket, it is easier to perform maintenance and inspection work on the stop member than when the stop member is disposed inside the door pocket. Can be done.

  The form of the door pocket is arbitrary, and this door pocket may be, for example, an externally exposed door pocket that can be visually recognized from the outside, or a wall storage type door pocket that is stored inside a wall. These door pockets may be double-sided door pockets having portions covering both sides in the thickness direction of the opening / closing body housed inside the door pocket, and have portions covering only one side in the thickness direction of the opening / closing body. It may be a single-sided door pocket. When the door pocket is this one-sided door pocket, the stop member arranged at a position removed from the door pocket may be provided at a position away from the door pocket on the side of the door pocket that is on one side, opposite to the door pocket. You may provide in the arbitrary positions of the opening-and-closing movement range of the opening-and-closing body in. Moreover, when a door pocket is a double-sided door pocket, the said stop member will be provided in the position remove | deviated from the door pocket in one or both of the double-sided side.

  Further, the present invention can be applied to any opening / closing device, and an example thereof is a sliding door device in which the opening / closing body is a door body. The sliding door device may be an upper suspension type sliding door device in which the roller rides on the guide member disposed above the door body and the door body is suspended from the guide member, and is disposed on the lower side. A sliding door device in which the door body moves by being guided by a guide member such as a guide rail may be used, or a sliding door device in which the door body moves by being guided by guide members such as guide rails arranged on both the lower side and the upper side. But you can.

  Further, this sliding door device may be one in which at least one of the opening movement and closing movement of the door body is performed by an automatic closing device, and both the opening movement and closing movement of the door body may be performed manually. .

  Furthermore, the number of door bodies may be one or more. When the number of door bodies is plural, the positions of these door bodies may be shifted in the thickness direction of these door bodies, and not shifted in the thickness direction of these door bodies. Also good. Furthermore, the opening / closing movement direction of these door bodies may be the same direction or the opposite direction. When the opening / closing movement directions of the plurality of door bodies are the same, these door bodies may be an outer door body and an inner door body that is nested in the outer door body. .

  Further, in the case where there are a plurality of door bodies, and other door body guide members for guiding the opening and closing movement of other door bodies are provided on an arbitrary door body, ”May be the above-described arbitrary door body provided with the other door body guide member, and the above-described“ guide member ”may be the other door body guide member. Further, in the case where the number of door bodies is one or more, the “non-moving member” may be the door pocket.

  Moreover, the opening / closing movement form of the door guided by the guide member is arbitrary. That is, the guide member that guides the door body may be a guide member that linearly guides the door body or a guide member that curves, and further, for example, closes the door body close to a building housing or the like. In addition, the guide member may be a member that moves the door body in the width direction of the door body (the opening / closing movement direction of the door body) while moving the door body substantially parallel to the thickness direction of the door body.

  According to the present invention, it is possible to eliminate the interference between the roller that opens and closes the opening / closing body along the guide member and the rack structure that rotates the pinion gear of the rotary brake device.

FIG. 1 is a front view showing the whole of a top-sliding type sliding door device which is an opening / closing device with a brake device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line S2-S2 of FIG. FIG. 3 is an enlarged view of a main part of FIG. FIG. 4 is a front view showing the door body moving mechanism housed in the internal space of the upper frame member shown in FIG. 1 with the inspection cover removed. FIG. 5 is an enlarged view of a main part of FIG. FIG. 6 is a plan view showing a state where the door body is stopped at the fully open position by the stop member when the door body has reached the fully open position. FIG. 7 is a front view showing a specific structure of the rack constituent body held by the holding member. FIG. 8 is a plan view showing the door body and the door frame side frame member when the door body is fully closed. FIG. 9 is a view similar to FIG. 3 showing an embodiment in which the holding member is formed as a part of the guide rail. FIG. 10 is a view showing an embodiment in which two rotary brake devices are attached to the door body, and is the same view as FIG. 4 showing when the door body has reached the fully closed position. FIG. 11 is a view showing an embodiment in which two rotary brake devices are attached to the door body, and is the same view as FIG. 4 showing when the door body has reached the fully open position.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The opening / closing apparatus according to the present embodiment is a sliding door apparatus that is a single door body in which the opening / closing body slides, and the door body is a guide rail that is a guide member disposed above the door body. The sliding door device is a top hanging type sliding door device that is hung from and guided by the guide rail and opens and closes, and the sliding door device has a door pocket that houses a door body, It is a wall storing type door pocket stored in the inside.

  FIG. 1 is a front view showing the whole of the above-described suspended type sliding door device that is arranged between a corridor and a room in a building and has an opening / closing space that is opened and closed by a door body 1 as an entrance 2. . The outer frame of the sliding door device includes an upper frame member 10, a door frame side frame member 11 on which the front end of the door body 1 abuts when the door body 1 reaches the fully closed position and closes the entrance 2. The doorside side frame member 11 is arranged between the doorside side frame member 12 disposed on the opposite side of the door body 1 in the moving direction, and between the frame member 11 and 12. A saddle frame member 13 arranged at the end of the doorway 3 in the door pocket 3 in which the door body 1 is stored when the doorway 2 is opened, and a baseboard 14 arranged at the lower end of the door bag 3 on the floor 4 It is formed by.

  The entrance / exit 2 is a partial space inside the outer frame formed by the frame members 10 to 14, and the entrance / exit 2 is opened / closed by the door body 1, and the door body when the entrance / exit 2 is opened. The door pocket 3 in which 1 is stored is a wall storage type door pocket stored in the wall 5. The upper frame member 10 has a length that extends from the door frame side frame member 11 to the door bottom side frame member 12, and the frame member 13 is a parting member on the doorway 3 side of the door pocket 3. .

  The door pocket 3 has a structure reinforced by a reinforcing member 20 that is continuous in the longitudinal direction of the upper frame member 10 and the skirting board 14 (left-right direction in FIG. 1). It is provided on both sides in the thickness direction of the door pocket 3, which is also the thickness direction, and is provided in a plurality in the vertical direction, which is also the longitudinal direction of the heel frame members 11, 12 and the heel frame member 13. Then, on the upper and lower sides of these reinforcing members 20, the inner wall material that is elongated in the longitudinal direction of the upper frame member 10 and the skirting board 14 is coupled to the reinforcing member 20 with a coupling tool such as an adhesive tape, An outer wall material having a large area is disposed outside the wall material, and a wall finishing material such as a cloth is attached to the surface of the outer wall material which is coupled to the reinforcing member 20 with a coupling tool such as a screw or a staple. Yes. For this reason, the wall 5 of the part of the door pocket 3 is formed by these inner wall material, outer wall material, and wall finishing material, and the door pocket 3 is formed inside the wall 5 with the reinforcing member 20 as a structural material. Yes.

  In addition, the handrail 6 can be provided in the location of the wall 5 in which the reinforcement member 20A with a large vertical dimension is arrange | positioned among the several upper and lower reinforcement members 20 shown by FIG. 6 can be attached to the reinforcing member 20A with an attachment such as a screw reaching the reinforcing member 20A.

  2 is a cross-sectional view taken along line S2-S2 of FIG. 1. As shown in FIG. 2, the upper frame member 10 has anchor members 22 attached to the base material 21 of the upper wall 5 of the upper frame member 10. As shown in FIG. The upper surface portion 10A coupled to each other, the hanging portion 10B hanging from one end portion of the upper frame member 10 in the width direction (left and right direction in FIG. 2) on the upper surface portion 10A, and the lower end of the hanging portion 10B A wall parting part 10C extending outward in the width direction. Further, a lower extending portion 10D extending slightly downward is formed at the end of the upper surface portion 10A in the width direction opposite to the hanging portion 10B, and the lower end of the downward extending portion 10D is obliquely upward. And the inclination extension part 10E extended to the width direction outer side on the opposite side to 10 C of wall material parting parts is provided. These extending portions 10D and 10E are provided only at locations corresponding to the entrance 2 shown in FIG.

  Since the downward extending amount of the downward extending portion 10D is small, the lower side of the downward extending portion 10D is an opening portion 10F of the upper frame member 10. From the opening portion 10F, the upper frame member 10 is provided. Various operations including inspection and maintenance of the door body moving mechanism housed and arranged in the interior space can be performed.

  The normal opening 10F is closed by an inspection cover 23, and the inspection cover 23 is formed obliquely downward at the upper end and is engaged with an inclined extending portion 10E of the upper frame member 10. A front portion 23B that extends vertically or substantially vertically downward from the engaging portion 23A, and a lower surface portion 23C that is bent horizontally or substantially horizontally from the lower end of the front portion 23B to the inside of the upper frame member 10. Have. When the opening cover 10F is closed, the inspection cover 23 has the locking portion 23A locked to the inclined extending portion 10E of the upper frame member 10, whereby the weight of the inspection cover 23 is supported by the upper frame member 10, As can be seen from FIGS. 1 and 2, the lower surface portion 23 </ b> C is fixed to the brackets 24 and 25 attached to the door frame side frame member 11 and the frame member 13 by screw members 26 and 27. .

  The above structure is also shown in FIG. 3, which is an enlarged view of the main part of FIG.

  When the inspection cover 23 is removed and the opening 10F of the upper frame member 10 is opened in order to perform the work such as the inspection of the door body moving mechanism described above, the screw members 26 and 27 are removed. Since the upper frame member 10 can be swung in and out of the upper frame member 10 around the upper locking portion 23A, the locking portion 23A is inclined by tilting the upper frame member 10 by swinging in the outer direction of the upper frame member 10. Extract from the extension 10E. Thereby, the inspection cover 23 is removed and the opening 10F of the upper frame member 10 is opened, and the opening 10F can be closed with the inspection cover 23 by performing the reverse operation.

  In this embodiment, as shown in FIG. 3, the locking portion 23 </ b> A of the inspection cover 23 is in direct contact with the inclined extending portion 10 </ b> E on the inclined extending portion 10 </ b> E of the upper frame member 10. A crown member 28 made of rubber, synthetic resin, or the like is covered, so that the upper frame member 10 and the metal that is the material of the inspection cover 23 are in direct contact with each other so that the inspection cover 23 can be attached or removed. And the like, and the upper frame member 10 and / or the inspection cover 23 are prevented from being damaged.

  Next, the aforementioned door body moving mechanism housed and arranged in the internal space of the upper frame member 10 will be described. FIG. 4 is a front view of the door body moving mechanism shown with the inspection cover 23 removed, and FIG. 5 is an enlarged view of a main part of FIG.

  Inside the upper frame member 10, a guide rail 30 having a length that extends over substantially the entire length of the upper frame member 10 is arranged above the door body 1, and guides the linear opening / closing movement of the door body 1. As shown in FIG. 3, the guide rail 30 is formed with a base end portion 30 </ b> A extending vertically and horizontally or substantially horizontally from the lower end of the base end portion 30 </ b> A in the thickness direction of the door body 1. The base end portion 30A is coupled to the hanging portion 10B of the upper frame member 10 by a coupling tool 31 such as a screw. On the door body 1, above the door body 1, a roller 32 that rolls on a roller mounting portion 30 </ b> C formed upward at the tip of the arm portion 30 </ b> B of the guide rail 30 is attached to the bracket 33. These two rollers 32 and brackets 33 are provided in the opening / closing movement direction of the door body 1, which is the longitudinal direction of the upper frame member 10, as shown in FIG. 5. For this reason, the door body 1 is an upwardly suspended door body in which a roller 32 is on the guide rail 30 disposed above the door body 1 and is suspended from the guide rail 30.

  As shown in FIGS. 2 and 3, the bracket 33 is attached with a roller drop-off prevention member 38 extending in the thickness direction of the door 1 below the guide rail 30, and is not expected in the door 1. When the lifting load or the like is applied, the roller drop prevention member 38 made of a bolt or the like abuts against the lower surface of the arm portion 30B of the guide rail 30 so that the roller 32 is prevented from dropping from the guide rail 30. It has become.

  Further, as shown in FIG. 5, a spiral spring type automatic closing device 34 for automatically closing and moving the door body 1 is arranged in the internal space of the upper frame member 10, and this automatic closing device. 34 is coupled to the hanging portion 10B of the upper frame member 10 and the base end portion 30A of the guide rail 30 with a coupling tool such as a screw in the vicinity of the end portion of the upper frame member 10 near the door frame side frame member 11. ing. From the automatic closing device 34, a string-like member 35 made of synthetic resin or the like having one end connected to a spiral spring mechanism provided inside the automatic closing device 34 is led out, and the other end of the string-like member 35 is Of the two rollers 32, the bracket 32A is rotatably connected to the door end side roller 32A. A hand that grasps the grip portion 36 shown in FIG. 1 when the door-side end of the door body 1 is in contact with the frame member 11 on the door-end side and the door body 1 fully closes the doorway 2. When the door 1 is opened and moved along the guide rail 30 by the above, the spring force is accumulated on the spiral spring of the spiral spring mechanism by the string-like member 35 fed out from the automatic closing device 34, and the hand is released from the grip portion 36. Then, the door body 1 automatically closes and moves to the fully closed position by the accumulated spring force. For this reason, the sliding door apparatus which concerns on this embodiment is a self-closing type sliding door apparatus.

  As shown in FIG. 1, the position corresponding to the arrangement position of the eaves frame member 13 in the moving path in which the door body 1 opens and closes, in other words, the eaves frame member 11 on the door end side in the baseboard 14 described above. A guide roller 39 is disposed at the end on the side. As shown in FIG. 2, the guide roller 39 is inserted into the lower end portion of the door body 1 that opens downward, and the opening and closing movement guided by the guide rail 30 of the door body 1 This is performed while the lower end of the body 1 is guided by the guide roller 39.

  Further, as shown in FIG. 5, a rotary brake device 40 is arranged on the upper portion of the door body 1, and the brake device 40 includes a roller 32 </ b> A on the door end side of the two rollers 32. The bracket 33A is rotatably supported. That is, in the present embodiment, the bracket 33A is a member for attaching both the roller 32A and the brake device 40 to the door body 1, and the dual use of the member is achieved.

  As shown in FIG. 3, the rotary brake device 40 includes a pinion gear 41 that meshes with the rack structure 50, and a rotation center shaft 42 of the pinion gear 41 extends in the thickness direction of the door body 1. In addition, the axial direction of the rotation center shaft 42 is horizontal or substantially horizontal, and the rotation center shaft 37 of the roller 32 for opening and closing the door body 1 along the guide rail 30 is also a door body. 1 and the axial direction of the rotation center shaft 37 is also horizontal or substantially horizontal, so that the rotation center axes 42 and 37 are parallel or substantially parallel. .

  The rack structure 50 is held by a holding member 51 attached to the upper frame member 10, and this holding member 51 is coupled to a hanging portion 10 </ b> B of the upper frame member 10 by a coupling tool 52 such as a screw. A base end portion 51A extending in the vertical direction, an arm portion 51B extending horizontally or substantially horizontally from the upper end of the base end portion 51A in the thickness direction of the door body 1, and a tip end portion of the arm portion 51B. A holding part 51 </ b> C is provided on the lower surface and holds the base part 50 </ b> A of the rack structure 50 inside the groove 53. As a result, the rack structure 50 has a rotary brake device attached to the door body 1, with the tooth portion 50 </ b> B meshing with the pinion gear 41 being held downward in the holding portion 51 </ b> C of the holding member 51. The upper ends of the 40 pinion gears 41 mesh with the tooth portions 50 </ b> B of the rack structure 50.

  An engaging portion 30D is formed at the upper end of the base end portion 30A of the guide rail 30, and an engaging portion 51D is also formed at the lower end of the base end portion 51A of the holding member 51. The guide rail 30 and the holding member 51 are connected by 51D mutually engaging.

  In the above, the rack structure 50 and the holding member 51 have a length in the opening / closing movement direction of the door body 1, and these rack structure 50 and the holding member 51 are shown in FIGS. 4 and 5. As shown, the length of the guide rail 30 is not the length over the entire length of the guide rail 30, and the position of the end of the rack body 50 and the holding member 51 on the door-end side is the end of the door body 1 on the door-end side. When the door frame 1 comes into contact with the front frame member 11, in other words, when the door body 1 reaches the fully closed position, the same position as the position where the pinion gear 41 has reached or a little closer to the door side. It has become the position. Moreover, the position of the edge part by the side of the door edge of the rack structure 50 and the holding member 51 is the same as a person's shoulder width between the edge part by the side of the door of the door 1, and the frame member 11 by the side of the door. When the door body 1 has reached a position where the interval is open, the door body 1 is at the same position or substantially the same position as the pinion gear 41.

  The main body 40A of the rotary brake device 40 shown in FIGS. 2 and 3 is filled with a viscous fluid such as silicon oil, and the pinion gear 41 and the rotation center shaft 42 are filled in the viscous fluid. When the pinion gear 41 rotates when the blades connected via the are accommodated and the pinion gear 41 rotates, the blade also rotates via the rotation center shaft 42.

  For this reason, the door body 1 is closed and moved from the fully open position side to the fully closed position side by an automatic closing force or the like by the spring force accumulated in the spiral spring mechanism of the spiral spring mechanism of the automatic closing device 34 described above. When the pinion gear 41 starts to mesh with the rack structure 50, the pinion gear 41 is rotated by the rack structure 50 from this time, so that the viscous fluid of the rotary brake device 40 is applied to the door body 1. A braking force is generated by the resistance force of the viscous force generated by stirring with the blade, whereby the door body 1 is braked by the rotary brake device 40 and reaches the fully closed position while decelerating.

  As described above, even when the door body 1 is opened and moved by the hand holding the gripping portion 36 shown in FIG. 1, the pinion gear 41 meshing with the rack component 50 rotates, but this pinion A one-way clutch is interposed between the gear 41 and the rotation center shaft 42. With respect to the rotation direction of the pinion gear 41 when the door body 1 is moving toward the fully open position, this one-way clutch. Therefore, the opening movement of the door body 1 can be lightly performed with a small force without generating a braking force by the rotary brake device 40.

  Then, the engaging portion 30D of the base end portion 30A of the guide rail 30 described in FIG. 3 and the engaging portion 51D of the base end portion 51A of the holding member 51 are both formed continuously in the opening / closing movement direction of the door body 1. Has been. Therefore, the connecting portion between the guide rail 30 and the holding member 51 formed by the engaging portions 30D and 51D connects the holding member 51 to the guide rail 30 so as to be movable in the opening / closing movement direction of the door body 1. It is supposed to be. For this reason, before the holding member 51 is coupled to the hanging portion 10B of the upper frame member 10 by the coupler 52, the engagement of the proximal end portion 51A of the holding member 51 to the engagement portion 30D of the proximal end portion 30A of the guide rail 30 is performed. With the joint portion 51D engaged, the position of the holding member 51 is adjusted by moving it in the opening / closing movement direction of the door body 1 with respect to the guide rail 30 coupled to the hanging portion 10B by the coupling tool 31. A position where the work can be performed and the holding member 51 is coupled to the hanging portion 10B of the upper frame member 10 by the coupling member 52 after the adjustment work, and thereby the door body 1 starts to be given a braking force by the rotary brake device 40. Can be changed to an appropriate position.

  As shown in FIG. 1, a door contact member 60 facing the door body 1 in the opening / closing movement direction of the door body 1 is attached to the lower part of the heel frame member 12 on the door bottom side. The door contact member 60 made of an elastic material such as rubber defines a retreat limit position that is an open movement limit position of the door body 1, and an end of the door body 1 on the door bottom side is the door contact member 60. When contacted, the door body 1 reaches the retreat limit position, that is, the fully open position.

  As shown in FIG. 6, the upper frame member 10 is formed by a leaf spring in the vicinity of the door end side end of the door body 1 and extends toward the door end side end side of the door body 1. A locking member 61 that approaches the drooping portion 10B side is attached, and a stop member 62 is attached to the drooping portion 10B below the guide rail 30. The stop member 62 is formed with two inclined surfaces 62 </ b> A and 62 </ b> B that are separated from each other in the opening / closing movement direction of the door body 1 and the distance between the door members 1 decreases as the door body 1 is approached. When the bent portion 61A at the tip of the door passes over the inclined surface 62A by the elastic deformation of the locking member 61 and is locked to the inclined surface 62B as shown in FIG. , When the bent portion 61A of the locking member 61 is locked to the inclined surface 62B on the opening side of the door body 1 out of the two inclined surfaces 62A and 62B. Due to the stopping action, the door body 1 stops at this fully open position.

  Therefore, a stop device for stopping the door body 1 at the fully open position is formed by the locking member 61 and the stop member 62.

  When the closing force is applied to the door body 1 with a hand grasping the grip portion 36 shown in FIG. 1, the bent portion 61A gets over the inclined surface 62B by the elastic deformation of the locking member 61, and the door body 1 is As described above, the automatic closing device 40 is closed and moved by the spring force accumulated in the spiral spring of the spiral spring mechanism.

  In this embodiment, as shown in FIGS. 4 and 5, the stop member 62 attached to the hanging portion 10 </ b> B of the upper frame member 10 forms the end portion of the door pocket 3 on the doorway 2 side. The stop member 62 is not inside the door pocket 3 but outside the door pocket 3 and is opened and closed by the door body 1 because it is arranged closer to the fully closed position by the door body 1 than the frame member 13 that is being operated. It arrange | positions in the location corresponding to the entrance / exit 2 to be performed. For this reason, by removing the above-described inspection cover 23 from the upper frame member 10, maintenance, inspection work, and the like of the stop member 62 can be easily performed.

  Further, as shown in FIG. 6, the base end portion of the locking member 61 is a plate-like base portion 61B, and this base portion 61B is screwed together with the guide member 65 in which the guide hole 65A is formed. It is couple | bonded with the upper surface of the door body 1 with the coupling tool 66 of. When the locking device 67 of the door body 1 shown in FIG. 1 is locked, the guide hole 65A is for guiding the lock bar 68 of FIG. 6 that protrudes upward, and the door body 1 is fully closed. When reaching the position, the lock bar 68 protruding upward is inserted into a lock hole formed in the lock member 64 attached to the door frame side frame member 11 shown in FIG. Thus, the door body 1 is locked in the fully closed position and stops.

  For this reason, in this embodiment, in order to guide the locking member 61 that forms the stop device for stopping the door body 1 in the fully open position together with the stop member 62, the protruding operation of the lock bar 68 upward. The guide member 65 is coupled to the door body 1 by a coupler 66, and the structure is simplified accordingly.

  Further, in the present embodiment, the door contact member 60 of FIG. 1 described above is close to the guide rail 30 or a portion having the same height as the guide rail 30 in the vertical direction, which is the longitudinal direction of the frame member 12 on the door bottom side. It is arranged not at the upper part but at a lower part near the floor 4, for example, a lower part than the vertical center part of the frame member 12. For this reason, even if the door body 1 is an upwardly suspended door body suspended from the guide rail 30 disposed inside the upper frame member 10, the door body 1 opens and moves at a high speed to the fully open position. Thus, even if the door body 1 collides with the door stop member 60 with a large force, the door body 1 is centered on the upper part of the door body 1 on which the roller 32 engaged with the guide rail 30 is disposed. Large swinging motion in the opening / closing movement direction can be eliminated.

  As shown in FIG. 1, when a cleaning opening 69 for cleaning the inside of the door pocket 3 is provided in the portion of the wall 5 where the door pocket 3 is provided, it is opened and closed with a lid. It is preferable to arrange the door stop member 60 at a position within the range of the cleaning opening 69 or a position close to the range (for example, a position where the hand can be reached from the cleaning opening 69). According to this, the maintenance work etc. about the door stop member 60 etc. can be performed with the hand etc. which were inserted from the opening part 69 for cleaning.

  In this embodiment, as shown in FIG. 3, the arrangement position of the roller 32 that opens and closes the door body 1 along the guide rail 30 and the arrangement position of the pinion gear 41 described above are the roller 32 and In the axial direction of the rotation center shafts 37 and 42 of the pinion gear 41, they do not coincide with each other, and are shifted by a distance A in the axial direction of these rotation center shafts 37 and 42. For this reason, the rack component 50 and the roller 32 with which the pinion gear 41 is engaged are also displaced in the axial direction with respect to the rotation center shafts 37 and 42 of the roller 32 and the pinion gear 41, and the arrangement position of the rack component 50 and the roller in this axial direction Thus, the arrangement position of the door 32 is moved away, so that the rack body 50 and the roller 32 do not interfere with each other, and the door body 1 can be opened and closed along the guide rail 30 on which the roller 32 is guided. .

  Further, as shown in FIG. 3, the rotation center shaft 42 of the pinion gear 41 with respect to the rotation center shaft 37 of the roller 32 is on the same side as the upper end where the rack component 50 meshes with the pinion gear 41. Is shifted upward by a distance B.

  For this reason, the rack structural body 50 with which the pinion gear 41 is engaged is separated from the roller 32 by an amount corresponding to the upper side, so that it is more effective that the rollers 32 and the rack structural body 50 interfere with each other. Can be eliminated.

  In the present embodiment, as described above, the guide rail 30 attached to the hanging portion 10B of the upper frame member 10 which is a stationary member and the hanging portion 10B of the upper frame member 10 are also attached to the rack. Since the holding member 51 holding the structure 50 is engaged with each other by the engaging portions 30D and 51D described above and connected in a vertically positioned state, the rack structure held by the holding member 51 is used. 50 and the guide rail 30 on which the roller 32 rolls can be set more accurately than when the holding member 51 and the guide rail 30 are not engaged with each other. The pinion gear 41 of the rotary brake device 40 attached to the door body 1 having the roller 32 on which it rides, and the rack configuration in which the pinion gear 41 meshes Vertical positional relationship between the 50 also can be set accurately, the rack structure 50 and the pinion gear 41 can be more reliably be engaged.

  Furthermore, in this embodiment, since the rotary brake device 40 is attached to the bracket 33A provided on the door body 1 at a position far from the door pocket 3 among the two brackets 33, the door body 1 is fully closed. The rotary brake device 40 can be moved away from the door pocket 3, and the rack structure 50 with which the pinion gear 41 of the rotary brake device 40 is engaged and the rack structure 50 are held. Since the holding member 51 can also be disposed at a position disengaged from the door pocket 3, inspection, maintenance work, etc. of the rotary brake device 40, the rack structure 50, and the holding member 51 can be easily performed.

  FIG. 7 is a front view showing a specific structure of the rack structure 50 held by the holding member 51. The rack structure 50 includes a first rack member 70 having a large length close to the entire length of the holding member 51, a length shorter than the first rack member 70, and the door body 1 of the first rack member 70. In other words, when the door body 1 is moved from the fully open position side to the fully closed position side, the engagement start side of the pinion gear 41 to the rack constituent body 50 rather than the first rack member 70 is moved to the fully open position side. And the second rack member 71 disposed at the position. The first rack member 70 is fixed to the holding member 51 by caulking or the like of the holding portion 51 </ b> C of the holding member 51 described in FIG. 3, and the second rack member 71 is movable toward the first rack member 70. Are held by the holding member 51. And since the edge part by the side of the fully open position of the door body 1 in the holding | maintenance part 51C is a closed state by crimping etc., the withdrawal of the 2nd rack member 71 from this edge part is prevented.

  Thus, since the second rack member 71 is held by the holding member 51 so as to be movable toward the first rack member 70, the door body 1 moves from the fully open position side to the fully closed position side, The pinion gear 41 of the rotary brake device 40 starts to mesh with the rack structure 50 when the pinion gear 41 meshes with the second rack member 71, and this meshing is performed by the second rack member 71. Since it is performed while moving to the first rack member 70 side, all or part of the impact force when the pinion gear 41 meshes with the rack component 50 is caused by the second rack member 71 moving toward the first rack member 70. Therefore, the generation of abnormal noise that occurs when the pinion gear 41 meshes with the rack structure 50 can be eliminated or suppressed.

  In addition, when the door body 1 moves from the fully open position side to the fully closed position side, the door body 1 moves from the fully closed position side to the fully open position side before that, and at this time, the pinion gear 41 is moved to the rack. When the second rack member 71 follows the pinion gear 41 by the frictional force generated by meshing with the second rack member 71 constituting the structural body 50, the second rack member 71 follows the first rack member 70. The second rack member 71 has reached a position away from the first rack member 70 because it has moved from the abutting position to the fully open position side of the door body 1.

  Further, in the present embodiment, the second rack member 72 that is movable with respect to the first rack member 70 that is fixedly held by the holding member 51 is more movable than the first rack member 70. It is also arranged on the closed position side. And since the edge part by the side of the fully closed position of the door body 1 in the holding | maintenance part 51C is a closed state by crimping etc. similarly to the case of the above-mentioned 2nd rack member 71, it is the 1st from this edge part. The two rack members 72 are prevented from coming out.

  Thus, in the present embodiment, the second rack members 71 and 72 are disposed on both sides of the first rack member 70, that is, on both sides of the door body 1 in the opening and closing movement direction with respect to the first rack member 70. 1 is different from the upper frame member 10 shown in FIG. 1 (the inspection cover 23 is disposed on the same side as FIG. 3, and the door pocket 3 is disposed on the left side of the entrance 2 in FIG. 1. As for the upper frame member), the rack structure 50 and the holding member 51 can be used in common. Moreover, the edge part member 1A of the door body side of the door body 1 shown in FIG. 8 is changed to a member having a different length dimension C in the opening / closing movement direction of the door body 1, or the door frame side frame member 11 is The first rack member 70 is movably disposed on both sides of the first rack member 70 even when the depth dimension D of the groove 11A with which the end member 1A on the door end side of the door 1 in the fully closed state abuts is changed. The two rack members 71 and 72 can effectively cope with these dimensional changes.

  In other words, even if the pinion gear 41 of the rotary brake device 40 has passed through the rack structure 50 before the door body 1 reaches the fully closed position, when the door body 1 is opened and moved, Since the two rack members 71 are movable toward the first rack member 70, it is possible to eliminate or suppress the generation of abnormal noise when the pinion gear 41 meshes with the rack constituent body 50.

  Further, in the present embodiment, as shown in FIG. 7, the shape of the second rack members 71, 72 is such that the vertical dimension of these second rack members 71, 72 extending to the pinion gear 41 side is the same. Since the taper shape is such that the first rack member 70 approaches the pinion gear 41 as it approaches the first rack member 70, the meshing of the pinion gear 41 with the rack component 50 in the second rack members 71 and 72 is smoothly started. To be done. Further, the second rack members 71 and 72 are made of an elastic material such as a soft synthetic resin or rubber with respect to the first rack member 70 made of a hard material such as a metal or a hard resin. At the start of meshing of the pinion gear 41 with the rack component 50 in the members 71 and 72, abnormal noise or the like can be generated more effectively, or the generation of abnormal noise can be suppressed more effectively, and the pinion gear 41 can be smoothly racked. It becomes possible to mesh with the structure.

  Furthermore, in this embodiment, as shown in FIGS. 2 and 3, since the roller drop-off preventing member 38 is attached to the bracket 33 described above, the fully open position side and the fully closed position of the holding member 51 described above are provided. When the pinion gear 41 has reached the position of the closed portion where the second rack member 71 does not reach even if both end portions on the position side are closed portions that have been closed by caulking or the like, When an unexpected lifting load or the like is applied to the door body 1, the roller drop-off prevention member 38 comes into contact with the lower surface of the arm portion 30 </ b> B of the guide rail 30, so that the pinion gear 41 is located above the second rack member 71. It can prevent contacting with the said closure part currently formed in the holding member 51. FIG.

  FIG. 9 shows another embodiment of the relationship between the guide rail that guides the opening and closing movement of the door body 1 and the holding member that holds the rack constituent body. Also in this embodiment, the guide rail 130 includes a base end portion 130A coupled to the hanging portion 10B of the upper frame member 10 by the coupler 31, and an arm extending in the thickness direction of the door body 1 from the lower end of the base end portion 130A. Part 130B and a roller mounting part 130C formed upward at the tip of this arm part 130B, and the base end part 130A extends upward from the base end part 30A of the guide rail 30 of the above embodiment. The extended portion is a base end portion 151A coupled to the hanging portion 10B of the upper frame member 10 of the holding member 151, and extends in the thickness direction of the door body 1 from the upper end of the base end portion 151A. A holding portion 151C that holds the rack structure 50 is provided on the lower surface of the tip portion of the arm portion 151B.

  For this reason, in this embodiment, the holding member 151 is formed as a part of the guide rail 130, and the holding member 151 is provided on the upper portion of the guide rail 130. The member in which the guide rail 130 and the holding member 151 are integrated as described above can be formed by, for example, extrusion molding or pultrusion molding. In these extrusion molding, pultrusion molding, and the like, the portion corresponding to the holding member 151 has a length over the entire length of the guide rail 130. Therefore, an unnecessary portion of this length may be removed by post-processing. You may arrange | position the rack structure 50 only to the predetermined part among this length, without performing excision.

  Further, according to this embodiment, since the guide rail 130 and the holding member 151 are integrated, the guide rail 30 and the holding member 51 are engaged and connected by the engaging portions 30D and 51D as in the above embodiment. The upper and lower positional relationship between the rack structure 50 held by the holding member 151 and the guide rail 130 on which the roller 32 of the door 1 rolls can be accurately set. The vertical positional relationship between the pinion gear 41 of the rotary brake device 40 attached to the door body 1 equipped with the rollers 32 and the rack structure 50 with which the pinion gear 41 meshes can be set accurately, and the rack configuration The body 50 and the pinion gear 41 can be engaged more reliably.

  In this embodiment as well, the structure of the rack structure described in FIG. 7 can be adopted.

  In the embodiment shown in FIGS. 10 and 11, the rotary brake device is attached to each bracket 33 in which the two rollers 32 of the door body 1 are arranged, that is, to the bracket 33 </ b> A on the door end side and the bracket 33 </ b> B on the door bottom side. 40 is attached. Further, in this embodiment, the rack structure 50 and the holding member 51 that holds the rack structure 50 are arranged at the center position or the substantially center position in the opening / closing movement direction of the door body 1, in other words, the door end side. The central frame member 11 is connected to the hanging portion 10B of the upper frame member 10 at a central position or a substantially central position between the vertical frame member 11 and the vertical frame member 12 on the door bottom side.

  In this embodiment, of the two rotary brake devices 40, the pinion gear 41 of the rotary brake device 40 attached to the bracket 33B on the door bottom side is such that the door body 1 moves toward the fully closed position. When the fully closed position is approached, it starts to mesh with the rack structure 50. The pinion gear 41 of the rotary brake device 40 attached to the bracket 33A on the door end side meshes with the rack structure 50 when the door body 1 moves toward the fully open position and approaches the fully open position. start. FIG. 10 shows the time when the door body 1 has reached the fully closed position, and FIG. 11 shows the time when the door body 1 has reached the fully open position.

  Therefore, according to this embodiment, the two rotary brake devices 40 can apply a braking force to the door body 1 both when the door body 1 reaches the fully closed position and when the door body 1 reaches the fully open position. it can. Moreover, the rack structure body 50 for rotating the pinion gear 41 of these rotary brake devices 40 can be made common, and the two rotary brake devices 40 can be operated by one rack structure body 51. Can do.

  When the door body 1 starts to move from the fully open position to the fully closed position in FIG. 11, the pinion gear 41 of the rotary brake device 40 on the door end side is rotated by the rack structure body 50, and the door When the body 1 starts to move from the fully closed position in FIG. 10 toward the fully open position, the pinion gear 41 of the door-side rotary brake device 40 is rotated by the rack component 50. A one-way clutch is interposed between the pinion gear 41 of the device 40 and the rotation center shaft 42 described above, and the door body 1 starts to move from the fully open position to the fully closed position in FIG. As for the rotational direction of the pinion gear 41 of the rotary brake device 40 on the door end side in FIG. The rotation direction of the pinion gear 41 of the rotary brake device 40 on the door bottom side when the door body 1 starts moving from the fully closed position to the fully open position in FIG. Since the connection of the one-way clutch of the rotary brake device 40 is disconnected, the door body 1 can start to move without causing the two rotary brake devices 40 to generate braking force. .

  Also in this embodiment, the structure of the rack structure described in FIG. 7 can be adopted, and the structure of the relationship between the guide rail and the holding member described in FIG. 9 can be adopted.

  Also in this embodiment, as shown in FIGS. 10 and 11, together with the locking member 61 attached to the door body 1, a stop device for stopping the door body 1 in the fully open position is formed. The stop member 62 is attached to the hanging portion 10 </ b> B of the upper frame member 10 at a position removed from the door pocket 3.

  INDUSTRIAL APPLICABILITY The present invention can be used for an opening / closing device that uses a rotary brake device as a braking device for braking the movement of the opening / closing body.

DESCRIPTION OF SYMBOLS 1 Door body which is an opening / closing body 3 Door bag 10 Upper frame member which is a stationary member 30, 130 Guide rail which is a guide member 30D Engagement part 32 Roller 33 Bracket 37 Roller center axis 40 Rotary brake device 41 Pinion gear 42 Pinion Gear rotation center shaft 50 Rack components 51, 151 Holding member 51D Engaging portion 62 Stop member 70 First rack member 71, 72 Second rack member

Claims (7)

In an opening / closing device with a brake device, comprising an opening / closing body that opens and closes by the rolling of a roller guided by a guide member, and a brake device that brakes the movement of the opening / closing body,
The brake device includes a pinion gear having a rotation center axis that is parallel or substantially parallel to the rotation center axis of the roller, and the pinion gear has a length in the opening / closing movement direction of the opening / closing body. A rotary brake device that generates braking force by meshing with a component and rotating. The rotary brake device is stationary with respect to the opening / closing body and the guide member is attached to the opening / closing body. Attached to one of the stationary members, and the rack structure is attached to the other,
The opening and closing device with a brake device, wherein the rack structure is formed of a plurality of rack members.   2. The opening / closing device with a brake device according to claim 1, wherein the plurality of rack members include a first rack member and a second rack member arranged in an opening / closing movement direction of the opening / closing body. Opening and closing device with brake device.   3. The opening / closing device with a brake device according to claim 2, wherein the second rack member is disposed at a position closer to a meshing start side of the pinion gear with respect to the rack structural body than the first rack member, and the first rack. A member is fixed and held by a holding member, and the second rack member is held by the holding member so as to be movable toward the first rack member.   4. The opening / closing device with a brake device according to claim 2, wherein two of the second rack members are arranged on both sides of the opening / closing movement direction of the opening / closing body with respect to the first rack member. Opening and closing device with brake device.   5. The opening / closing device with a brake device according to claim 2, wherein a shape of the second rack member is such that a dimension of the second rack member extending toward the pinion gear is closer to the first rack member. According to the present invention, the opening and closing device with a brake device has a taper shape that is close to the pinion gear.   The switchgear with a brake device according to any one of claims 2 to 5, wherein the first rack member is made of a hard material and the second rack member is made of an elastic material. An opening / closing device with a brake device.   The switchgear with a brake device according to any one of claims 1 to 6, wherein there are two rotary brake devices in the opening / closing movement direction of the switchgear.

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