JP2009019429A - Device for closing open-close body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for closing an open-close body capable of finely adjusting the drawing force of the open-close body by an elastic body such as a tension spring. <P>SOLUTION: A capture drawing mechanism 120 for the device 110 for closing the open-close body has a fixing element 112, a capture body 150 and the elastic body 123 connecting its one end to the capture body 150 to urge the capture body 150 in the closing direction. The capture drawing mechanism 120 for the device 110 for closing the open-close body further has a drawing-force adjusting mechanism 170 fixing the other end of the elastic body 123 to the fixing element in a location adjustable manner. The drawing-force adjusting mechanism 170 has an elastic-body holding member 172, a rack 172d formed to the elastic-body holding member 172, a pinion 173 engaged with the rack 172d and a pinion engaging element 174. A location to the fixing element 112 of the other end of the elastic body 123 can be adjusted by rotating the pinon 173 while releasing an engagement between the pinion engaging element 174 and teeth for the pinion 173. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an opening / closing device (sliding door device, opening device, drawer device, etc.) formed by holding an opening / closing body such as a sliding door or a drawer so that it can be moved relative to a fixed member such as a rail (sliding or rotating). More particularly, the present invention relates to an opening / closing body closing device configured to close an opening / closing body by a pulling force of an elastic body such as a coil spring.

  Conventionally, a member to be captured is attached to one member of a fixed member and an opening / closing body, and a capturing / retracting mechanism is provided to the other member. 2. Description of the Related Art An opening / closing body closing device configured to close an opening / closing body by pulling on the opening / closing body is known. The capturing member is urged toward the closing side of the opening / closing body by the tension of a tension spring provided between this and the fixing element of the opening / closing body closing device.

  However, the running performance of the opening / closing body varies depending on the weight of the opening / closing body, the construction state of the opening / closing body, and the like. For this reason, when the opening / closing device provided with the opening / closing device having a favorable traveling property is attached to the opening / closing device provided with the opening / closing member having poor traveling properties, the opening / closing member cannot be closed to the end. There is. This is because the pulling force of the tension spring of the opening / closing body closing device is insufficient with respect to the load / resistance of the opening / closing body to be closed.

  In order to cope with such problems, conventionally, various types of opening / closing body closing devices have been prepared by changing the specifications of the tension springs of the opening / closing body closing device. The problem is that the cost increases and product management becomes complicated.

On the other hand, the spring holding member that holds the fixed end of the tension spring can be moved in the tension direction with respect to the fixing element of the opening / closing body closing device, and the locking pin protrudes from the spring holding member and guides the locking pin. Locking recesses are provided at predetermined intervals on the side of the guide hole, and the locking pin is engaged with an arbitrary locking recess to fix the spring holding member at a desired position. 2. Description of the Related Art An opening / closing body closing device that can adjust a pull-in force is known. (See Patent Document 1)
JP-A-11-264270

  However, in the conventional opening / closing body closing device described in the above publication, the locking position of the spring holding member holding the fixed end of the tension spring is fixed to one of the plurality of locking recesses. Since the configuration of adjusting by selectively engaging is adopted, the retracting force of the opening / closing body by the tension spring can be adjusted only in stages. This conventional apparatus configuration has a drawback that the pull-in force of the opening / closing body by the tension spring cannot be finely adjusted, and it is not possible to flexibly cope with variations in running performance of the opening / closing body.

  The present invention has been devised in view of the above circumstances, and an object thereof is to provide an opening / closing body closing device capable of finely adjusting the retracting force of the opening / closing body by an elastic body such as a tension spring.

  In order to achieve the above object, an opening / closing body closing device of the present invention is an opening / closing device that holds an opening / closing body so as to be movable with respect to a fixing member. A capture member is attached to the other member and a capture pull-in mechanism is provided on the other member. When the opening / closing body is closed, the capture member is captured by the capture pull-in mechanism and pulled in a predetermined direction to close the open / close body. The opening / closing body closing device configured as described above, wherein the capture pull-in mechanism has a fixing element fixed to the other member and a function of capturing the captured member and slides relative to the fixing element A capture body held in a possible manner, an elastic body having one end connected to the capture body to bias the capture body in the predetermined direction, and the other end of the elastic body positioned with respect to the fixed element Adjustable fixed A pulling force adjusting mechanism, and the pulling force adjusting mechanism has a holding portion for holding the other end of the elastic body and is slidable in the expansion and contraction direction of the elastic body with respect to the fixing element. The elastic body holding member, a rack formed on the elastic body holding member along the direction of expansion and contraction of the elastic body, a pinion meshing with the rack, and a tooth of the pinion to engage with the elastic body. A pinion locking element formed on the fixed element to stop the rotation of the pinion due to an elastic force, and the pinion is rotated while releasing the engagement between the pinion locking element and the pinion teeth. The position of the other end of the elastic body with respect to the fixed element can be adjusted by moving the elastic body.

  According to the opening / closing body closing device configured as described above, the retracting force of the opening / closing body by the elastic body can be finely adjusted by adjusting the fixing position of the elastic body holding member with respect to the fixing element.

  In the opening / closing body closing device of the present invention, it is preferable that the capturing body, the elastic body, and the elastic body holding member are accommodated in the fixing element. The fixing element is provided with an operation hole so that the pinion can be rotated from the outside of the fixing element that is attached to either the fixing member or the opening / closing member. It is desirable that the fixing element is provided with a window so that the position of the elastic body holding member can be confirmed from the outside of the fixing element.

  According to the opening / closing body closing device configured as described above, the pinion is mounted while checking the position of the elastic body holding member while the fixing element is attached to either the fixing member or the opening / closing body. Since the position of the elastic body holding member can be adjusted by rotating, the retracting force of the opening / closing body by the elastic body can be easily adjusted.

  Further, in the opening / closing body closing device of the present invention, when the position of the other end of the elastic body with respect to the fixed element has reached the limit of the adjustable range, and further rotating the pinion in a direction exceeding the limit, the It is desirable that the pinion is configured to idle with respect to the rack.

  According to the opening / closing body closing device configured as described above, it is possible to prevent the pinion and the rack from being damaged due to the pinion turning operation exceeding the limit capable of adjusting the retracting force. As soon as the pinion starts to idle, the load (torque) for rotating the pinion is suddenly reduced, so that the operator can immediately notice that the adjustment limit of the pull-in force has been reached.

  Further, in the opening / closing body closing device of the present invention, when the position of the other end of the elastic body with respect to the fixed element reaches the limit of the adjustable range on the side of weakening the retracting force of the opening / closing body by the elastic body, A contact portion with which the front end of the elastic body holding member abuts is formed on the fixed member, and a spring piece that elastically contacts the contact portion is formed at the front end of the elastic body holding member. Even after the position of the end with respect to the fixing element reaches the limit of the adjustable range on the side where the pulling force of the opening / closing body by the elastic body is weakened and the pinion is idle with respect to the rack, It is preferable that the rack of the elastic body holding member is returned to a position where it can mesh with the pinion by a repulsive force of a spring piece.

  According to the opening / closing body closing device configured as described above, after the pinion is rotated so as to weaken the retracting force of the opening / closing body by the elastic body to the limit, the pinion becomes idle with respect to the rack. However, when the adjustment for increasing the pulling force is performed, the adjustment can be performed while preventing the pinion from spinning freely.

  Moreover, in the opening / closing body closing device of the present invention, it is desirable that the rear end side of the elastic body holding member is configured to protrude from the fixing element.

  According to the opening / closing body closing device configured as described above, the dimensions of the fixing element in the sliding direction of the elastic body holding member are compared with the case where the elastic body holding member is configured not to come out of the fixing element. Can be reduced.

  According to the opening / closing body closing device of the present invention, it is possible to finely adjust the pull-in force of the opening / closing body by an elastic body such as a tension spring, and it is possible to flexibly cope with variations in running performance of the opening / closing body. That is, since the retracting force of the opening / closing body by the elastic body can be finely adjusted in accordance with the traveling performance of the opening / closing body, sufficient retracting force is applied to various opening / closing bodies having different traveling properties to securely close the opening / closing body. be able to.

Hereinafter, the best mode for carrying out the present invention will be described.
[First Embodiment]
FIG. 1 is a perspective view illustrating the main part of an upper load type sliding door device as an opening / closing device provided with the opening / closing body closing device of the present invention. FIG. 2 is an exploded perspective view of the main part of FIG. 3 and 4 are plan views showing a state where the back cover of the opening / closing body closing device is removed.

  In the sliding door device 100 shown in FIG. 1, the upper guide rail 90 of the upper and lower guide rails (the lower rail is not shown) is composed of two upper and lower rails, and the opening / closing body closing device 110 is provided in the upper rail. It is attached. The sliding door 200 is supported in a state of being suspended via a support shaft 211 under a pair of left and right four-wheel carriages (traveling bodies) 210A and 210B that travel in the lower stage of the guide rail 90.

  Of the pair of four-wheel carriages 210A and 210B provided in the sliding door 200, an adapter 250 is attached to the four-wheel carriage 210A located on the opening / closing body closing device 110 side.

  The adapter 250 includes a stopper pin (captured member) 201 and an adapter main body 251. The adapter main body 251 is a plate-shaped member having a U-shaped cross section, and the base end portion 251a is detachably fixed to the upper end portion of the carriage main body 210a and is supported in a cantilever state. The distal end 251 b side of the adapter main body 251 greatly extends in a direction away from the opening / closing body closing device 110. In this example, the tip 251b of the adapter main body 251 extends to a position closer to the other (left side) four-wheel carriage 210B. And the stopper pin 201 is hold | maintained at the front-end | tip part 251b of the adapter main body 251. FIG.

  As shown in FIGS. 2 to 8, the opening / closing body closing device 110 includes an elongated rectangular housing 111, a capture pull-in mechanism 120, and a buffer mechanism 140 (140 </ b> A, 140 </ b> B). The housing 111 includes a housing main body (fixing element) 112 fixed to the upper rail, and a flat plate-like back cover 113 that closes the upper opening of the housing main body 112. Attachment holes 146 and 147 for fixing the opening / closing body closing device 110 to a fixing member such as a rail are provided at the front end portion and the rear end portion of the housing main body 112.

  The capture pull-in mechanism 120 includes a housing body 112 that is a fixed element, a capture body 150 that is slidable in the housing body 112 in the longitudinal direction, and biases the capture body 150 in the closing direction (right side) of the sliding door 200. Therefore, the tension spring (elastic body) 123 whose one end (hereinafter referred to as “free end”) is connected to the capturing body 150 and the other end of the tension spring 123 (hereinafter referred to as “fixed end”) are preferably used. A pull-in force adjusting mechanism 170 that is fixed to the housing 112 so as to be adjustable in position is provided.

  The capturing body 150 includes a slider (sliding member) 151 that slides inside the housing main body 112, a latch (capturing member) 152 that is attached to the slider 151 to capture the stopper pin 201, and the slider 151 that closes the sliding door 200. A tension spring (elastic body) 123 provided in a stretched state between the front end 121a of the slider 151 and the rear end 112a of the housing main body 112 so as to be biased in the direction (right side). ing.

  The slider 151 includes a main body portion 126 and an arm portion 127 extending forward from one end side of the main body portion 126. At the distal end portion of the arm portion 127, a holding portion 124 that holds the constricted portion 123a at the free end of the tension spring 123 is provided. The holding portion 124 includes a narrowing portion 124 a and a holding piece 124 b, and a guide wall 125 that guides the tension spring 123 extends from the narrowing portion 124 a to the main body portion 126 of the slider 151. The tension spring 123 is guided by the inner wall of the housing body 112 on the side of the holding piece 124b. The constricted portion 123 b at the fixed end of the tension spring 123 is connected to the housing main body 112 via a retracting force adjusting mechanism 170.

  A step portion 128 lower than the main body portion 126 is formed adjacent to the base end portion of the arm portion 127 at the distal end portion of the main body portion 126 of the slider 151, and a latch 152 is attached to the step portion 128. . A rotating shaft 122 a is integrally formed on the lower surface of the base portion of the latch 152. The rotating shaft 122 a is formed in the vicinity of the innermost part of the pin capturing part 152 a of the latch 152. On the other hand, the stepped portion 128 is formed with a shaft hole 135 that fits with the rotating shaft 122a of the latch 152. The latch 152 is supported so as to be rotatable in the horizontal direction by fitting the rotation shaft 122 a into the shaft hole 135 of the stepped portion 128. As will be described later, the base portion of the latch 152 also functions as a cam for operating the first buffer mechanism 140A.

  A slit-like stopper guide 118 that receives the stopper pin 201 and guides it to the pin catching portion 152 a of the latch 152 is formed on the bottom plate portion 116 of the housing body 112, and in parallel with the stopper guide 118, A slit-shaped latch guide 119 is formed to guide the guide protrusion 152b formed on the lower surface of the tip portion. At the front end of the housing body 112, a funnel-shaped stopper pin entrance / exit 148 that is enlarged forward is provided so that the stopper pin 201 can smoothly enter the stopper guide 118.

  The latch guide 119 has a straight portion 119a extending from the vicinity of the terminal end portion of the stopper guide 118 to the middle portion, and a bent portion 119b bent at a right angle therefrom. The bent portion 119b is provided to allow the latch 152 to rotate outwardly when the latch 152 captures or releases the stopper pin 201. The guide protrusion 152b enters the bent portion 119b of the latch guide 119.

  The latch 152 rotates inward when the stopper pin 201 that has moved in the closing direction (rightward direction) comes into contact, and captures the stopper pin 201. On the contrary, when the latch 152 releases the stopper pin 201, the stopper pin 201 moves the front inner surface of the latch 152 in the opening direction with the slider 151 moved to the maximum extension position of the tension spring 123. By pushing and turning the latch 152 outward, the catch of the stopper pin 201 by the latch 152 is released.

  The buffer mechanism 140 includes a first buffer mechanism 140A using a brake plate 132 and brake pads 136A and 136B that sandwich the brake plate 132, and a second buffer mechanism 140B using a rotary damper device 138.

  The brake plate 132 is a member made of an elongated metal plate whose one end is bent in an L shape, and the L-shaped end 132 a is formed in the vicinity of the front end in the housing main body 112. 145 is fitted and fixed. The other end side of the brake plate 132 extends to the rear end side of the housing body 112. The length of the brake plate 132 is selected to be longer than the stroke length of the slider 151.

  As shown in FIGS. 5 and 6, a locking groove 130 is formed near the front end of the main body 126 of the slider 151. A housing groove 133 that receives the brake plate 132 is formed in the main body 126 of the slider 151. A short portion of a pressing member 134 made of a metal plate bent in an L shape is inserted into the locking groove 130, and the long portion of the pressing member 134 is disposed between the side wall of the stepped portion 128 and the brake plate 132. Has been. A first brake pad 136A is attached to the surface of the pressing member 134 facing the brake plate 132 side. A second brake pad 136B made of a friction material is attached to the illustrated rear side wall 146 of the slider 151. The first brake pad 136A and the second brake pad 136B are opposed to each other with the accommodating groove 133 that receives the brake plate 132 interposed therebetween.

  A cam portion 158 that presses the pressing member 134 is formed at the base portion of the latch 152. When the door 200 is closed, the latch 152 is pushed by the stopper pin 201 and rotates inward (arrow A side), and the pressing member 134 is pressed by the cam portion 158. Accordingly, one surface of the brake plate 132 is pressed through the first brake pad 136A. At this time, the other surface of the brake plate 132 is in pressure contact with the second brake pad 136B. As a result, the brake plate 132 is held between the brake pads 136A and 136B, and the relative movement between the slider 151 and the housing 111 is buffered. As a result, the slider 151 and thus the sliding door 200 are braked.

  FIG. 3 shows a state immediately before the stopper pin 201 is captured by the latch 152. At this time, the guide protrusion 152 b of the latch 152 is engaged with the bent portion 119 b of the latch guide 119 of the housing body 112. When the stopper pin 201 further moves in the closing direction (right direction) from the state of FIG. 3, the stopper pin 201 is captured by the latch 152. At this time, the latch 152 is pushed by the stopper pin 201 and pivots inward (in the direction of arrow A in FIGS. 5 and 6), so that the guide protrusion 152b of the latch 152 is detached from the bent portion 119b of the latch guide 119. And move to the straight line portion 119a. As a result, the catching body 150 is disengaged from the housing main body 112 and the pulling of the slider 151 by the pulling force of the tension spring 123 is started. When the slider 151 is moving in the closing direction (right side), the relative movement between the slider 151 and the housing 111 is buffered by the first and second buffer mechanisms 140A and 140B constituting the buffer mechanism 140. Thereby, it can prevent that the sliding door 200 is closed violently. Then, as shown in FIG. 4, when the slider 151 reaches the movement limit position in the closing direction (right side), the movement of the stopper pin 201 and thus the sliding door 200 stops. At this time, the sliding door 200 is completely closed (closed state). Even after the stopper pin 201 stops at the end of the latch guide 119, the stopper pin 201 is kept in a state of being captured by the latch 152.

  When the sliding door 200 is opened from the state of FIG. 4, the slider 151 including the latch 152 that captures the stopper pin 201 also moves in the opening direction (left side in the illustrated example). At this time, since the rotary damper 138 rotates in the direction opposite to the direction in which the rack 141 and the first pinion 139 are engaged, the buffer mechanism 140 does not operate at all. When the slider 151 reaches the movement limit position in the opening direction (left side), the latch 152 is rotated outward by the stopper pin 201, so that the catch of the stopper pin 201 by the latch 152 is released at the same time. The guide protrusion 152b of the latch 152 moves from the straight portion 119a of the latch guide 119 to the bent portion 119b, and the housing main body 112 and the capturing body 150 are engaged with each other, that is, the state shown in FIG.

  Between the latch 152 and the main body 126 of the slider 151, a rotation restricting piece 180 for adjusting a range in which the latch 152 can be rotated is provided. The rotation restricting piece 180 is accommodated in a piece accommodating portion 131 formed adjacent to the front end of the main body portion 126 so as to be movable in a direction perpendicular to the sliding direction of the slider 151. Arc-shaped engaging recesses 131b and 131c are formed at two locations in the base end side inner wall 131a of the piece accommodating portion 131 so as to be spaced apart in the horizontal direction. One engagement convex portion 181 a is formed on the rear end surface 181 of the rotation restricting piece 180. The rotation restricting piece 180 has its engaging projection 181a engaged with one of the engagement recesses 131b and 131c according to its moving position, and is held at that position.

  The lower part of the piece housing part 131 is open to the stopper guide 118 as desired. An operation claw 183 (see FIG. 8) is provided on the lower surface of the rotation restricting piece 180. The operation claw 183 protrudes into the stopper guide 118. That is, the operation claw 183 is provided at a position that matches a portion opened below the rail 90 (a slit-shaped opening 91 through which the support shaft 211 of the four-wheel carriages 210A and 210B moves). The rotation restricting piece 180 can be moved by operating from the outside. On the front end surface 182 of the rotation restricting piece 180, a step having a concave surface 182a on one side in the horizontal direction and a convex surface 182b on the other side is formed. The edge 313 at the base of the latch 152 abuts on the concave surface 182a or the convex surface 182b of the rotation restricting piece 180, and the inward rotation (the arrow A side) of the latch 152 is restricted. In FIG. 5, the edge 313 of the base end portion of the latch 152 is in contact with the concave surface 182 a of the rotation restricting piece 180. At this time, the latch 152 is rotated inward (arrow A side) as much as possible. On the other hand, in FIG. 6, the edge 313 of the base end portion of the latch 152 is in contact with the convex surface 182 b of the rotation restricting piece 180. The rotation range is limited.

  A support shaft 137 is erected on the rear end portion of the main body 126 of the slider 151. A sleeve-like bearing 138 a of a rotary damper 138 is attached to the support shaft 137. A first pinion 139 is fixed to the rotary shaft of the rotary damper 138. A partition wall 117 is provided on the bottom plate portion 116 of the housing body 112 so as to partition the rear end portion of the housing body 112 into a movement space for the rotary damper 138 and a movement space for an elastic body holding member 172 described later. A first rack 141 is formed on the side surface of the partition wall 117 on the moving space side of the rotary damper 138. The teeth of the first pinion 139 are rotatable about a support shaft 137 so that the teeth of the first pinion 139 can be engaged with the teeth of the first rack 141. The rotary range of the rotary damper 138 is restricted on the one hand by the stopper 142 protruding from the rear end of the slider and on the other hand at the rear end edge of the main body 126 of the slider 151.

  The rotary damper 138 is provided with a sliding friction shaft 149. The sliding friction shaft 149 is provided closer to the first rack 141 than the region through which the support shaft 137, which is the rotation fulcrum of the rotary damper 138, passes. The sliding friction shaft 149 is in sliding contact with the inner surface of the back cover 113 of the housing 111. When the slider 151 moves relative to the housing 111, the rotary damper 138 moves along with the movement of the slider 151, and friction is generated between the sliding friction shaft 149 provided on the rotary damper 138 and the inner surface of the back cover 113 of the housing 111. appear. When the slider 151 is moved to the rear end side of the housing 111 by the frictional force, the rotary damper 138 rotates about the support shaft 137 in the direction in which the first pinion 139 and the first rack 141 are engaged with each other. Be made. On the other hand, when the slider 151 is moved to the front end side of the housing 111, the rotary damper 138 rotates about the support shaft 137 in the direction opposite to the direction in which the first pinion 139 and the first rack 141 are engaged. It can be moved while keeping its position.

  The back cover 113 is formed with a pressing piece 115 that elastically presses the sliding friction shaft 149 at a position where the sliding friction shaft 149 of the rotary damper 138 stops when the slider 151 reaches the front end side movement limit position of the housing 111. Has been. The pressing piece 115 protrudes slightly below the lower surface of the back cover 113 and is formed to be elastically deformable in the vertical direction. Due to the presence of the pressing piece 115, when the slider 151 is moved from the front end side movement limit position of the housing 111 to the rear end side, the rotary damper 138 is immediately moved around the support shaft 137 and the first pinion 139 and the first rack. By rotating in the direction in which 141 engages, the braking force by the rotary damper 138 can be applied reliably.

  The pull-in force adjusting mechanism 170 has a holding portion (holding portion) 172c that holds the fixed end of the tension spring 123 at its front end portion, and is slidable in the expansion / contraction direction of the tension spring 123 with respect to the housing body 112. Elastic body holding member 172, second rack 172d formed on the side of elastic body holding member 172 along the direction of expansion and contraction of tension spring 123, pinion 173 meshing with second rack 172d, and second pinion A pinion locking projection (pinion locking element) 174 formed on the housing body 112 to engage with the teeth of 173 to stop the rotation of the second pinion 173 due to the elastic force (tensile force) of the tension spring 123. I have.

  The elastic body holding member 172 is provided between the inner side surface 114 a of the housing body 112 and the partition wall 117. The elastic body holding member 172 has a main body 172a and a substantially flat arm 172b extending forward from the main body 172a. A holding portion (holding portion) 172 c that holds the constricted portion 123 b of the fixed end of the tension spring 123 is formed at the front end portion of the main body portion 172 a of the elastic body holding member 172. The bottom plate portion 116 of the housing main body 112 is provided with a contact portion 177 on which the front end portion of the arm portion 172b contacts. The contact portion 177 forms a wall that partitions the inside of the housing main body 112 together with the partition wall 117. A spring piece 172e that elastically contacts the contact portion 177 is provided at the front end portion of the arm portion 172b by integral molding.

  The second pinion 173 is housed in a pinion housing portion 175 formed near the rear end of the housing body 112. The pinion accommodating portion 175 is defined by a substantially arc-shaped wall 176 that is erected on the bottom plate portion 116 of the housing main body 112 so as to surround the second pinion 173, leaving the movement space of the elastic body holding member 172. . The shape and dimensions of the pinion accommodating portion 175 are selected so that the second pinion 173 is allowed to rotate and the movement in the front-rear direction, that is, the full length direction of the housing body 112 is allowed slightly. Even when the second pinion 173 is moved in the front-rear direction, the movement of the second pinion 173 in the lateral direction, that is, the direction orthogonal to the full length direction of the housing main body 112 is regulated by the pinion housing portion 175, The engagement with the second rack 172d is not released. An operation hole 168 into which a tool such as a plus driver or a minus driver can be inserted is formed in the bottom plate portion 116 of the housing 111 so as to communicate with the pinion accommodating portion 175. The operation hole 168 is formed at a position that can be seen through the slit-like opening 91 of the rail 90 in a state in which the opening / closing body closing device 110 is attached to the rail 90, and the end surface portion 173 a of the pinion 173 is exposed through the operation hole 168. is doing. The end surface portion 173a of the pinion 173 is formed with a groove (a plus groove, a minus groove, etc.) that engages with the tool so that the pinion 173 can be rotated from the outside of the housing 111 by using the tool. It has become.

  The pinion locking protrusion 174 is a claw-shaped (tooth-shaped) protrusion formed on the inner wall surface on the front end side of the pinion housing portion 175. Since the force of the tension spring 123 is constantly acting on the second pinion 173 via the elastic body holding member 172, the direction of intentionally extending the second pinion 173 rearward, that is, the tension spring 123 for the rotation operation. Unless the second pinion 173 is moved in the direction of arrow B in FIG. 7, the second pinion 173 is kept engaged with the pinion locking protrusion 174. Thereby, the rotation of the pinion 173 is prevented except when the pinion 173 is rotated.

  In order to rotate the pinion 173, a tool such as a Phillips screwdriver or a flat-blade screwdriver is inserted through the operation hole 168 of the housing main body 112, and first the pinion 173 is moved backward (in the direction of arrow B in FIG. 7) to thereby move the pinion. 173 and the pinion locking member 174 are disengaged. By rotating the pinion 173 in this state, the elastic body holding member 172 having the rack 172d engaged therewith moves forward and backward. When the rotation operation is completed, the teeth of the pinion 173 and the pinion locking member 174 are engaged again by the elastic force of the tension spring 123, and the rotation of the pinion 173 is stopped. With the above operation, the position of the fixed end of the tension spring 123 changes. As a result, the tension of the tension spring 123 changes. The direction in which the elastic body holding member 172 is moved can be changed depending on the direction in which the pinion 173 is rotated. Further, the amount of movement of the elastic body holding member 172 can be adjusted substantially steplessly by adjusting the amount of rotation of the pinion 173. Therefore, by rotating the pinion 173, the fixing position of the elastic body holding member 173 holding the fixed end of the tension spring 123 is changed almost steplessly, and the pulling force of the sliding door 200 by the tension spring 123 is changed. The strength can be adjusted almost steplessly.

  As shown in FIG. 8, the opening / closing body closing device 110 includes a retracting force confirmation mechanism 178. The pull-in force confirmation mechanism 178 includes a needle 178a, a window 178b formed in the bottom plate portion 116 of the housing main body 112, and a scale 178c attached to the outer surface of the bottom plate portion 116 of the housing main body 112.

  The window 178b is a slit-like long hole extending in the moving direction of the elastic body holding member 172. The needle 178a is a protrusion formed on the lower surface (surface on the opening / closing body side) of the elastic body holding member 172. As the elastic body holding member 172 moves, the needle 178a moves in the window 178b. The scale 178c is attached so as to divide the movable area of the needle 178a in the window 178b at equal intervals. Characters “weak” are written below the scale on the side farthest from the second pinion 173, and “strong” is written below the scale on the side closest to the second pinion 173. That is, in a state where the fixed end of the tension spring 123 and the pinion 173 are farthest apart, the needle 178a comes to the “weak” position. When the fixed end of the tension spring 123 and the pinion 173 are closest to each other, the needle 178a comes to the “strong” position. Therefore, when adjusting the pull-in force by rotating the pinion 173, the housing 111 is attached to the rail 90 without removing the housing 111 from the rail 90 and confirming the position of the fixed end of the tension spring 123 each time. The pulling force can be easily adjusted while confirming the pulling force from the outside of the housing 111 in the state.

  FIG. 3 shows a state where the fixing position of the elastic body holding member 172 is most separated from the pinion 173 (that is, a state where the pulling force is minimized). In this state, when the pinion 173 is further rotated in a direction to move the fixed end of the tension spring 123 away from the pinion 173, that is, the limit of the adjustable range on the side where the position of the fixed end of the tension spring 123 weakens the pulling force. When the second pinion 173 is further rotated in the direction exceeding the limit in a state where the second pinion is reached, the second pinion 173 is not engaged with the tooth at the rearmost end of the second rack 172d, and the second pinion 173 is idle. Begin to. At this time, the spring piece 172e provided at the front end portion of the arm portion 172c of the elastic body holding member 172 is in elastic contact with the contact portion 177 provided in the housing main body 112. Therefore, even after the second pinion 173 is idle with respect to the second rack 172d, the second rack 172d of the elastic body holding member 172 can mesh with the second pinion 173 by the repulsive force of the spring piece 172e. Return to position. Thereby, the 2nd pinion 173 and the 2nd rack 172d are maintained in the state which can mutually mesh | engage.

  FIG. 9 shows a state where the fixing position of the elastic body holding member 172 is closest to the second pinion 173 (that is, a state where the pulling force is maximized). In this state, when the second pinion 173 is further rotated in the direction in which the fixed end of the tension spring 123 is moved closer to the pinion 173, that is, the adjustable range on the side where the position of the fixed end of the tension spring 123 increases the pulling force. When the second pinion 173 is further rotated in a direction exceeding the limit in a state where the limit is reached, the second pinion 173 does not mesh with the frontmost tooth of the second rack 172d, and the second pinion 173 Starts spinning. At this time, the elastic body holding member 172 is pulled back by the elastic force of the tension spring 123, so that the rearmost tooth of the second rack 172d and the second pinion 173 can be engaged. Thereby, the 2nd pinion 173 and the 2nd rack 172d are maintained in the state which can mutually mesh | engage.

  The rear end 112b of the housing main body 112 is provided with an entrance / exit 179 for allowing the rear end side of the elastic body holding member 172 to protrude from the housing 111, which is a fixed element, and when the retracting force is adjusted to a predetermined strength or more. As shown in FIG. 9, the rear end side of the elastic body holding member 172 protrudes from the housing 111.

  According to the opening / closing body closing device 110 configured as described above, the fixing position of the elastic body holding member 172 holding the fixed end of the tension spring 123 is finely adjusted by rotating the second pinion 173. Therefore, the strength of the pulling force of the sliding door 200 by the tension spring 123 can be easily finely adjusted. Therefore, it is possible to flexibly cope with variations in running performance of the sliding door 200. That is, since the pulling force of the sliding door 200 by the tension spring 123 can be adjusted according to the traveling property of the sliding door 200, sufficient sliding force is applied to various sliding doors 200 having different traveling properties to reliably close the sliding door 200. be able to.

  Further, an operation hole 168 for rotating the second pinion 173 from the outside is formed at a position that can be seen through the slit-like opening 91 of the rail 90, and the opening / closing body closing device 110 is provided with a retracting force confirmation mechanism 178. Therefore, the sliding door 200 by the tension spring 123 can be easily finely adjusted while the opening / closing body closing device 110 is attached to the rail 90.

  In addition, the opening / closing body closing device 110 according to the present embodiment has the second pinion 173 in a direction beyond the limit when the position of the fixed end of the tension spring 123 relative to the housing body 112 reaches the limit of the adjustable range. Since the second pinion 173 is configured to rotate freely with respect to the second rack 172d when the second pinion 173 is rotated, the second pinion 173 is operated so as to exceed the limit capable of adjusting the retracting force. Damage to the 2-pinion 173 and the second rack 172d can be prevented. As soon as the second pinion 173 starts to idle, the load (torque) for rotating the second pinion 173 suddenly decreases, so that the operator can immediately notice that the adjustment limit of the pull-in force has been reached. Can be made.

  In addition, the opening / closing body closing device 110 according to the present embodiment reaches the limit of its adjustable range on the side where the pulling force of the opening / closing body 200 by the tension spring 123 is weakened with respect to the housing body 112 of the tension spring 123. A contact portion 177 with which the front end of the elastic body holding member 172 abuts is formed in the housing main body 112, and a spring piece 172e that elastically contacts the contact portion 177 is formed at the front end of the elastic body holding member 172. The state in which the position of the other end of the spring 123 with respect to the housing body 112 reaches the limit of the adjustable range on the side where the pulling force of the opening / closing body 200 by the tension spring 123 is weakened, and the second pinion 173 rotates idly with respect to the second rack 172d Even after the second rack 172d of the elastic body holding member 172 is moved to the second position by the repulsive force of the spring piece 172e. Since the second pinion 173 is rotated so as to weaken the pulling force of the opening / closing body 200 by the tension spring 123 to the limit because the second pinion 173 is rotated to the limit, the second pinion 173 is moved to the second position. Even after the idle rotation with respect to the rack 172d, when the adjustment for increasing the pulling force is performed, the second pinion 173 can be prevented from idling and the adjustment can be performed reliably.

  Further, the opening / closing body closing device 110 according to the present embodiment is configured such that the rear end side of the elastic body holding member 172 protrudes and retracts from the housing 111, so that the elastic body holding member 172 does not come out of the housing 111. Compared with the case where it comprises, the dimension of the housing 111 in the sliding direction of the elastic body holding member 172 can be made small.

  Further, according to the opening / closing body closing device 110 of the present embodiment, by switching the position of the rotation restricting piece 180, the rotatable range of the latch 152 that functions as a cam for operating the first buffer mechanism 140A is switched. Therefore, the braking force by the first buffer mechanism 140A can be easily adjusted.

  In the above embodiment, an example in which the opening / closing body closing device 110 of the present invention is provided at the upper end of the sliding door 200 is shown, but the opening / closing body closing device 110 of the present invention may be provided at the lower end of the sliding door 200. Is possible.

  In the above embodiment, an example in which the tension spring 123 made of a coil spring is used as an elastic body that pulls the capturing body 150 in the closing direction of the sliding door 200 is shown. However, other elastic bodies such as a leaf spring, a bamboo child spring, and a torsion are used. A coil spring or rubber may be used.

  Moreover, in the said embodiment, although the stopper pin 201 was attached to the sliding door 200 and the opening-and-closing body closing device 110 was attached to fixing members, such as the rail 90, the stopper pin 201 was used as a fixing member on the contrary. The attachment / opening / closing body closing device 110 may be attached to the sliding door 200.

  In the above embodiment, the elastic body holding member 172 is provided with a protrusion and is used as the needle 178a. However, it is only necessary that the position of the elastic body holding member 172 be confirmed by providing a mark (line or the like).

FIG. 1 is a perspective view illustrating a main part of an upward load type sliding door device as an opening / closing device provided with the opening / closing body closing device of the present invention. 2 is an exploded perspective view of the main part of FIG. FIG. 3 is a plan view showing a state where the back cover of the opening / closing body closing device of the present invention is removed. FIG. 4 is a plan view showing a state where the back cover of the opening / closing body closing device of the present invention is removed. FIG. 5 is an enlarged view of a main part of the opening / closing body closing device of the present invention. FIG. 6 is an enlarged view of a main part of the opening / closing body closing device. FIG. 7 is a perspective view for explaining the pull-in force adjusting mechanism in a state where the back cover of the opening / closing body closing device of the present invention is removed. FIG. 8 is a perspective view for explaining a pull-in force confirmation mechanism in the opening / closing body closing device of the present invention. FIG. 9 is a plan view showing a state where the back cover of the opening / closing body closing device of the present invention is removed.

Explanation of symbols

90 Guide rail 91 Slit-shaped opening 100 Sliding door device 110 Opening / closing body closing device 112 Housing body (fixing element)
113 Lid 116 Bottom plate 117 Partition wall 118 Stopper guide 119 Latch guide 120 Supplementary retract mechanism 122a Rotating shaft 123 Tension spring (elastic body)
124 clamping part 124a narrowing part 124b clamping piece 126 main body part 127 arm part 128 step part 132 brake plate 133 receiving groove 134 pressing member 135 shaft hole 136 brake pad 138 rotary damper device 139 first pinion 140 (140A, 140B) buffer mechanism 145 Fitting holding portion 146, 147 Mounting hole 148 Stopper pin inlet / outlet 150 Supplementary body 151 Slider 152 Latch 170 Retraction force adjusting mechanism 172 Elastic body holding member 173 Second pinion 177 Abutting portion 180 Rotation restricting piece 183 Operation claw 200 Sliding door 201 Stopper Pin 210a Bogie body 210A, 210B Four-wheel bogie 211 Spindle 250 Adapter 251 Adapter body

Claims (5)

In the opening and closing device that holds the opening and closing body movably with respect to the fixing member, the member to be captured is attached to one member of the fixing member and the opening and closing body, and the capturing member is provided to the other member, When the opening and closing body is closed, the opening and closing body closing device configured to close the opening and closing body by capturing the member to be captured by the capturing and pulling mechanism and drawing it in a predetermined direction,
The capture pull-in mechanism is
A fixing element fixed to the other member;
A capturing body having a function of capturing the captured member and slidably held with respect to the fixing element;
An elastic body having one end connected to the capturing body to bias the capturing body in the predetermined direction;
A retraction force adjusting mechanism for fixing the other end of the elastic body to the fixing element so that the position thereof can be adjusted;
The pulling force adjusting mechanism is
An elastic body holding member having a holding portion for holding the other end of the elastic body and provided so as to be slidable in a stretching direction of the elastic body with respect to the fixed element;
A rack formed on the elastic body holding member along the expansion and contraction direction of the elastic body;
A pinion meshing with the rack;
A pinion locking element formed on the fixing element to engage with the teeth of the pinion and stop the rotation of the pinion due to the elastic force of the elastic body,
The position of the other end of the elastic body with respect to the fixed element can be adjusted by rotating the pinion while releasing the engagement between the pinion locking element and the teeth of the pinion. Opening and closing body closing device.   The capture body, the elastic body, and the elastic body holding member are accommodated in the fixing element, and are attached to one of the fixing member and the opening / closing body from the outside of the fixing element. An operation hole is provided in the fixed element so that the pinion can be rotated, and a window is provided in the fixed element so that the position of the elastic body holding member can be confirmed from the outside of the fixed element in the state. The opening / closing body closing device according to claim 1.   When the position of the other end of the elastic body with respect to the fixed element reaches the limit of the adjustable range, and further rotating the pinion in a direction exceeding the limit, the pinion is idled with respect to the rack. The opening / closing body closing device according to claim 1, wherein the opening / closing body closing device is configured.   Contact where the front end of the elastic body holding member comes into contact when the position of the other end of the elastic body with respect to the fixed element reaches the limit of the adjustable range on the side where the pulling force of the opening / closing body by the elastic body is weakened And a spring piece elastically contacting the contact portion at the front end of the elastic body holding member, and the position of the other end of the elastic body relative to the fixing element is the elastic body Even after the limit of the adjustable range on the side of weakening the retracting force of the opening / closing body due to the above and the pinion becomes idle with respect to the rack, the elastic body holding member by the repulsive force of the spring piece The opening / closing body closing device according to claim 3, wherein the rack is returned to a position where the rack can mesh with the pinion.   The opening / closing body closing device according to any one of claims 2 to 4, wherein a rear end side of the elastic body holding member protrudes and protrudes from the fixing element.