JP2009164224A - Pull-out type chassis - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pull-out type chassis which can pull out/store a tray with a simple operation even if the pulled out tray is in a horizontal state or a forward tilting state and can fix the tray so that work can easily be performed even if the tray is vertically arranged. <P>SOLUTION: A guide axis 24a and a forward tilting support axis 24b, which engage the tray 2 with a long hole 17 arranged in a rail member 3, are disposed in right/left parts of the tray 2. The tray 2 can slide in a back and forth direction in engagement to the long hole 17. A notch 17a where the forward tilting support axis 24b can move upward from the long hole 17 in the state where the tray 2 is pulled out is formed at an upper side of the long hole 17. A horizontal holding member 26 for inhibiting a forward tilting operation of the pulled out tray 2 and holding it in a horizontal state is coupled to the forward tilting support axis 24b. When the tray 2 is in a pull-out position, a state where the forward tilting support axis 24b moves to the notch 17a and takes a forward tilting posture by dead weight or a state where the tray 2 maintains horizontality by an operation of the horizontal holding member 26 can be selected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drawer-type chassis used for a splice unit or the like, and more particularly to a drawer-type chassis whose posture can be changed from a horizontal posture to a forward tilted posture after being pulled out.

  Some splice units that store optical fiber connections and extra lengths are formed in a tray shape that is stored in a dedicated rack (optical distribution board). In this case, the splice units are stored horizontally in the vertical direction, and the optical fiber is stored and maintained by pulling out the individual splice units. For this reason, it is convenient to adopt a forward tilting posture when it is pulled out so that it can be easily operated. For example, Patent Document 1 discloses such a configuration.

In the optical wiring board of Patent Document 1, the splice unit is a drawer-type chassis configured with a tray and a support plate for attaching the tray to the optical wiring board, and provided with horizontal holding pieces and forward tilt holding pieces on the left and right sides of the tray. While the shaft member is attached, a stopper is provided on the rail of the opposing support plate so that the tray can be kept in a horizontal state and can be fixed in either a state in which it leans forward due to its own weight.
By constructing to tilt forward in this way, it is easier to work if the horizontal tray is maintained when the lower tray is pulled out, and it is tilted forward when the upper tray is pulled out. It becomes easy to work at any position of the optical wiring board.

JP 2003-149458 A

  However, the drawer-type chassis of Patent Document 1 requires an operation to avoid the stopper on the rail side when the tray is stored in the rack from a state where the tray is tilted forward. There is a possibility that the shaft member may be damaged or the optical fiber housed therein may be broken. In addition, the splice unit may be used in a vertical arrangement. However, when the splice unit configured as described above is erected, the angle of the drawn tray cannot be fixed. It was a thing.

  Therefore, in view of such problems, the present invention can be pulled out / stored with a simple operation regardless of whether the tray being pulled out is in a horizontal state or in a forward-tilted state. It is an object of the present invention to provide a drawer type chassis capable of fixing a tray so that it can be easily performed.

  In order to solve the above-mentioned problems, the invention of claim 1 has a frame for fixing to the right and left columns of the rack, and a tray accommodated in the frame, and the tray is drawn / removed from the frame. A drawer-type chassis in which both are connected by a rail member that enables storage, and the rail member is disposed between the frame and the side plates of the tray, and the tray is provided with a guide shaft and a front side on the left and right sides. A rail engaging shaft composed of an inclined support shaft is arranged in front and rear, and the rail engaging shaft is engaged with a long hole formed in the rail member so that the tray can slide in the front and rear direction. In a state where the forward tilt support shaft is pulled out, a notch is formed on either the upper or lower side of the elongated hole so that the forward tilt support shaft can move from the elongated hole to either the upper or lower side. Forbids the forward tilting action of the tray When a horizontal holding member for holding in a state is connected and the tray is in the drawer position, the forward tilt support shaft moves to the notch and the tray takes a forward tilt posture with its own weight; and Any one of a state in which the tray is kept horizontal by the action of a horizontal holding member can be selected.

  According to this configuration, the forward tilt posture / horizontal posture of the tray is changed by operating the horizontal holding member, so that the operation is easy to understand and is not easily mistaken. Then, the tray can be pulled out / stored with a simple operation without performing operations such as swinging the tray up and down. Further, since the vertical movement of the tray is stabilized by engaging the horizontal holding member with the engaging wall, the tray can be used satisfactorily without being fluctuated even if the tray is arranged vertically.

According to a second aspect of the present invention, in the first aspect of the invention, the horizontal holding member has a rod-like body that is rotatably supported by the forward tilting support shaft and extends in the front-rear direction, and is cut out in the upper side of the rail member. If the upper rail member is provided with a notch on the lower side, the lower rail member is provided with an engagement wall on which the rod-shaped body can be engaged, and the tray is moved to the drawer position. Rotating the rod-like body vertically to prevent one end of the rod-like body from coming into contact with the engaging wall and preventing the forward tilting support shaft from entering the notch, and maintaining a horizontal state. Features.
According to this configuration, the forward tilt posture and the horizontal posture can be changed by a simple operation of rotating the horizontal holding member.

According to a third aspect of the present invention, in the second aspect of the invention, the other end of the rod-shaped body is a rotation assisting piece for rotating by itself, and the tray is stored and operated while the rod-shaped body is raised. When this is done, it engages with the front surface of the frame, and the rod-like body rotates, so that the tray storing operation can be continued.
According to this configuration, even if the storage operation is performed with the rod-shaped body standing upright, the horizontal holding member rotates in contact with the frame body and is accommodated in the frame body, so that the storage operation is not hindered. Therefore, even if the horizontal holding member is left unattended, the horizontal holding member is not damaged or the tray cannot be stored.

The invention according to claim 4 is the invention according to claim 2 or 3, wherein the forward inclined support shaft is covered with a cylindrical body in which a sliding portion with the rail is formed on a horizontal holding member, and the cylindrical body is a rod-shaped body. It has an elliptical cross section having a major axis in the longitudinal direction.
According to this configuration, the longitudinal direction of the rod-shaped body can be maintained in a state parallel to the long hole of the rail member by the action of the cylindrical body, and a situation in which the horizontal holding member rotates while the tray slides can be prevented. it can.

According to the present invention, the forward tilt posture / horizontal posture of the tray can be changed by rotating the horizontal holding member, so that the operation is easy to understand and is not mistaken. Then, the tray can be pulled out / stored with a simple operation without performing operations such as swinging the tray up and down. Furthermore, since the angle of the tray is stabilized by engaging the horizontal holding member with the engaging wall, even if the tray is arranged vertically, it does not wobble and can be used satisfactorily.
Further, when the storage operation is performed with the rod-shaped body standing upright, the horizontal holding member rotates in contact with the frame body in the middle and is accommodated in the frame body, so that the storage operation is not hindered. Therefore, even if the horizontal holding member is left unattended, the horizontal holding member is not damaged or the tray cannot be stored.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. 1A and 1B are side views showing an example of a drawer type chassis according to the present invention. FIG. 1A is a state in which a tray is stored, FIG. 1B is a state in which the tray is pulled out, and FIG. The tilted state is shown. FIG. 2 is a perspective view of the state shown in FIG. 1 and 2, reference numeral 1 denotes a frame for fixing the rack to the right and left columns 4, 2 denotes a tray accommodated in the frame 1, and 3 denotes an accommodation position where the tray 2 is accommodated in the frame 1 and a forward drawing. It is a rail member for making it slide between between drawer positions.

  This embodiment shows a case where the drawer-type chassis is a splice unit that accommodates an optical fiber, where 6 is a cable clamp that fixes the optical fiber cable, 7 is a flexible tube that holds the optical fiber, and 8 is an optical fiber. Indicates the connection adapter to be connected.

  The frame 1 has a bottom plate 11, a side plate 12, and a back plate 13 and is formed in a box shape. Rack fittings 14 are attached to the left and right side plates 12 and 12 to be attached to a rack column 4. The rail member 3 is arranged inside the left and right side plates 12 and 12 so as to be sandwiched between the tray 2. The rail member 3 is formed long in the front-rear direction, is attached to the side plate 12 so as to be slidable in the front-rear direction, and is formed with a long hole 17 that engages with the tray 2 and guides the back-and-forth movement of the tray 2.

  The tray 2 has a side plate 21, a top plate 22, a bottom plate (not shown), and a front plate 23 that protects a connected optical fiber, and is formed in a box shape. A rail engagement shaft 24 that is inserted through the hole 17 and engaged therewith is attached. The rail engagement shaft 24 includes a cylindrical guide shaft 24a provided at the front and a forward tilt support shaft 24b provided at the back thereof.

3 is an enlarged view of part A of FIG. 1, and FIG. 4 is an enlarged view of part B of FIG. 1. As shown in the figure, the guide shaft 24a and the forward tilt support shaft 24b both have screws on the side plate 21 of the tray 2. It is formed by screwing. Further, a horizontal holding member 26 made of synthetic resin is rotatably attached to the forward tilt support shaft 24b.
On the other hand, the elongated hole 17 formed in the rail member 3 is formed with a notch 17a that allows the forward inclined support shaft 24b to be removed from the elongated hole 17 on the upper side in the vicinity of the front end and move upward. Yes. With this notch 17a, when the tray 2 is pulled out and slid to the extraction position where the guide shaft 24a is brought into contact with the foremost portion of the long hole 17, the guide shaft 24a is supported forwardly with the guide shaft 24a as a fulcrum by its own weight. The shaft 24b enters the notch 17a and assumes a forward tilt posture. In this state, the side surface of the horizontal holding member 26 is held in contact with the engaging wall 27 formed on the rail member 3.

  FIG. 5 is an enlarged view of a portion C in FIG. 2. As shown in FIG. 5, the rail member 3 is formed in a Z-shape and has a horizontal step portion 3a extending substantially in the front and rear. The step portion 3 a is an engagement wall 27.

  6A and 6B are enlarged views of the horizontal holding member 26, where FIG. 6A is a front perspective view, and FIG. 6B is a rear perspective view. The horizontal holding member 26 has a rod-like body 26b in which a shaft hole 26a for inserting the forward inclined support shaft 24b is formed in the lateral direction at a substantially center, and is inserted into the elongated hole 17 around the shaft hole 26a on the back side. A cylindrical portion 26c is formed. The rear side of the rod-like body 26b is a horizontal holding piece 28 that prevents the forward tilt support shaft 24b from entering the notch 17a in the state shown in FIG. 3, and the front is a knob portion 29 that is rotated. .

  FIG. 7 shows a state in which the tray 2 is maintained in a horizontal state by the action of the horizontal holding member 26, (a) is a state in which the tray 2 is pulled out and is held horizontally, and (b) is an enlarged view of a portion D thereof. The figure is shown. As shown in this figure, the knob 29 is rotated in the direction indicated by the arrow, the rod-shaped body 26b is arranged vertically, and the horizontal holding piece 28 as the upper end is engaged with the engaging wall 27, so that the front The tilt support shaft 24b cannot enter the notch 17b, and the horizontal state of the tray 2 is maintained.

  Further, the knob 29 is a rotation assisting unit that contacts the front surface of the frame 1 and rotates by itself when the tray 2 is stored and operated with the rod-like body 26b upright. FIGS. 8A and 8B are side views for explaining this action, in which FIG. 8A shows a state in the middle of storing the pulled-out tray 2, and FIG. 8B shows an enlarged view of the E section. As shown in this figure, during the storage, a knob (rotation assisting portion) 29 facing downward with the rod-like body 26b standing is brought into contact with the front surface 1a of the frame body 1 and moved forward. As a result, the rod-like body 26b rotates and shifts to a substantially horizontal state, and can approach the state before the standing operation and enter the frame body 1. Thus, the tray 2 can be stored even when the horizontal holding member 26 stands up.

  And the cylinder part 26c inserted in the long hole 17 is formed in the ellipse which has a long axis parallel to the longitudinal direction of the rod-shaped body 26b. By making this cylindrical part 26c into an elliptical shape, when sliding inside the long hole 17, the long axis of the cylindrical part 26c is maintained parallel to the long hole 17, and the horizontal holding member 26 rotates. There is nothing. Therefore, the rod-shaped body 26b maintains the state of facing the front-rear direction, and even if it is in a state of being slightly shifted from the horizontal state and inclined, it moves to the horizontal state by the sliding operation.

  The sliding operation of the drawer-type chassis formed in this way is as follows. First, from the state shown in FIG. 1A housed in the frame body 1, when the drawer operation is performed by holding the front plate 23 of the tray 2 and moved to the drawing position where the tray 2 is pulled out, the state shown in FIG. In the tray storage state, the rod-like body 26b of the horizontal holding member 26 is laid down facing forward and backward, and this state is maintained even during the pull-out operation by the action of the cylindrical portion 26c.

  When the tray 2 is slid to the drawing position, the guide shaft 24a comes into contact with the tip of the long hole 17 of the rail member 3, and the forward support shaft 24b reaches the notch 17a forming portion and moves upward as shown in FIG. It becomes possible. As a result, the tray 2 is lowered by its own weight around the guide shaft 24a, and the inclined support shaft 24b rises and enters the notch 17a as shown in FIG. Then, the side surface of the horizontal holding member 26 comes into contact with and engages with the engaging wall 27 of the rail member 3, and a predetermined forward tilt angle is maintained. In this way, the state shown in FIG. 1C is obtained, and the tray 2 takes a forward tilt posture and is maintained in that state.

  When the tray 2 in the drawer position is held in a horizontal state, the tray 2 in the forward inclined posture is lifted to the state shown in FIG. 1B, and the knob 29 of the rod-shaped body 26b is operated as shown in FIG. Turn downward to raise the rod-shaped body. As a result, the opposite horizontal holding piece 28 reaches the engaging wall 27 and the forward tilting support shaft 24b is prohibited from entering the notch 17a, and even if the hand is released from the tray 2, the tray 2 does not lower and the horizontal state is maintained. Maintained.

Then, the tray 2 is stored by performing the reverse operation. That is, the tray 2 may be pushed in after the knob portion 29 of the horizontal holding member 26 is pulled forward and the rod-like body 26b is laid horizontally.
However, as described above, the storage operation can be performed with the rod-shaped body 26b standing. As shown in FIG. 8, in the standing rod-like body 26 b, the knob 29 comes into contact with the front surface 1 a of the frame body 1 while the tray 2 is housed, and the rod-like body 26 b rotates. As a result, the rod-like body 26b approaches the initial horizontal state before standing up, and during the subsequent sliding operation, the rod-like body 26b shifts completely to the horizontal state by the action of the elliptical cylindrical portion 26c, and the tray 2 is stored well. .

As described above, since the forward tilt posture / horizontal posture of the tray is changed by a simple operation of rotating the horizontal holding member, the operation is easy to understand and is not easily mistaken. Then, the tray can be pulled out / stored with a simple operation without performing operations such as swinging the tray up and down.
Even when the rod-shaped body is stowed and stowed, the horizontal holding member rotates and is housed in the frame when it abuts on the frame, so that the stowing operation is not hindered. Therefore, the horizontal holding member is not damaged or the tray cannot be stored.
Furthermore, the longitudinal direction of the rod-like body can be kept parallel to the long hole of the rail member by the action of the cylindrical body, and a situation in which the horizontal holding member rotates while the tray slides can be prevented.

  The above has described the configuration in which the drawer-type chassis is horizontally disposed and the tray 2 is pulled forward. However, the chassis having the above-described configuration can be used by being vertically disposed in parallel with the wall surface. FIGS. 9A and 9B are explanatory views in which the drawer-type chassis of the present invention is vertically arranged and installed on the wall surface. FIG. 9A shows a state in which the tray 2 is stored in the frame 1 and FIG. The tray 2 is installed so as to slide in the left-right direction parallel to the wall surface W.

As described above, in the present invention, when the tray 2 is installed horizontally, it is configured to take a forward tilting posture. Therefore, when the tray 2 is arranged vertically as shown in FIG. It becomes. Therefore, the tray 2 is configured to swing back and forth as indicated by arrows. However, the horizontal holding member 26 is rotated and the horizontal holding piece 28 is engaged with the engaging wall 27 with the pulled-out tray 2 parallel to the wall surface W, so that the tray 2 swings without tilting backward. You can get a state that does not.
In this way, the horizontal holding member 26 can be used even when the tray 2 is vertically arranged, and the tray 2 is stabilized by engaging the horizontal holding member 26 with the engaging wall 27. The work can be performed smoothly and can be used satisfactorily.

  In the above embodiment, the guide shaft 24a and the forward tilt support shaft 24b that constitute the rail engagement shaft 24 are arranged with the guide shaft 24a on the front and the forward tilt support shaft 24b on the rear. You may do it. In this case, the notch 17a formed in the elongated hole 17 is formed below the tip of the elongated hole 17, and the engagement wall 27 is also disposed below the notch 17a accordingly.

  In the above embodiment, the splice unit for storing the connection portion and the extra length of the optical fiber has been described. However, the present invention can be applied to an electronic device, a communication device, and a drawer-type chassis for storing an electric wire. It can also be used as a storage tray.

It is a side view which shows an example of the drawer-type chassis which concerns on this invention, (a) is the state which accommodated the tray in the frame, (b) is the state which pulled out the tray, (c) is tilted forward the pulled-out tray. It shows the state that was made to. It is a perspective view of the state of FIG.1 (c). It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. It is the C section enlarged view of FIG. It is an external view of a horizontal holding member, (a) is a front side perspective view, (b) has shown the back side perspective view. (A) is a side view of the state where the pulled-out tray is held horizontally, and (b) is an enlarged view of the D part. (A) is the side view of the state in the middle of storing operation from the state of FIG. 5, (b) is the E section enlarged view. It is explanatory drawing which shows a mode that the drawer type chassis of FIG. 1 was attached to the wall surface, (a) has shown the state which accommodated the tray, (b) has shown the state which pulled out the tray.

Explanation of symbols

  1 .. Frame body 2.. Tray 3.. Rail member 17.. Elongate hole 17 a ... Notch 24.. Rail engagement shaft 24 a · Guide shaft 24 b · Forward tilt support shaft , 26 ··· Horizontal holding member, 26a · · shaft hole, 26b · · rod-like body, 26c · · cylindrical portion, 27 · · engagement wall, 28 · · horizontal holding piece, 29 · · knob.

Claims (4)

A drawer having a frame for fixing to the right and left columns of the rack, and a tray accommodated in the frame, and the tray being connected to each other by a rail member that allows the tray to be pulled out / stored. Type chassis,
The rail member is arranged between the frame body and the side plates of the tray, and the tray has a rail engaging shaft including a guide shaft and a forward tilting support shaft arranged in parallel on the left and right side portions, and the rail engagement. The tray is slidable in the front-rear direction by engaging a shaft with a long hole formed in the rail member,
In the state where the tray is in the pulled-out position, the forward tilt support shaft is formed with a notch on either one of the upper and lower sides of the elongated hole so as to be movable from the elongated hole to either the upper or lower side.
A horizontal holding member is connected to the forward tilt support shaft to prevent the tray from being tilted forward and to hold it horizontally.
When the tray is in the pull-out position, the forward tilt support shaft moves to the notch and the tray takes a forward tilt posture with its own weight, and the horizontal holding member keeps the tray horizontal. A drawer type chassis characterized in that either of the states can be selected. The horizontal holding member has a rod-like body that is rotatably supported by a forward tilting support shaft and extends in the front-rear direction.
When the notch is provided on the upper side of the rail member, the upper rail member is provided, and when the notch is provided on the lower side, the lower rail member is provided with an engagement wall with which the rod-like body can be engaged,
By moving the tray to the pull-out position and rotating and vertically arranging the rod-shaped body, one end of the rod-shaped body is brought into contact with the engagement wall and the forward tilt support shaft is prohibited from entering the notch, The drawer type chassis according to claim 1, wherein the horizontal state is maintained. The other end of the rod-shaped body is a rotation assisting piece for rotating itself, and when the tray is stowed with the rod-shaped body upright, it engages with the front surface of the frame body and the rod-shaped body rotates. The drawer-type chassis according to claim 2, wherein the drawer-type chassis can be moved and the storage operation of the tray can be continued. The forward tilt support shaft is covered with a cylindrical body having a sliding portion with a rail formed on a horizontal holding member, and the cylindrical body has an elliptical cross section having a long axis in a longitudinal direction of the rod-shaped body. 3. The drawer type chassis according to 3.

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