JP2009185574A - Winding device of shutter door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive winding device of a shutter door, which can be housed in a winding cylinder without the provision of an urging means outside, which can facilitate the operation of mounting an urging means and other attachments in the winding cylinder, and which can maintain sufficient strength. <P>SOLUTION: This winding device of the shutter door comprises: a winding shaft 20; the winding cylinder 22 which is rotatably and externally fitted to the winding shaft, which has an urging means storage space 21 formed in an inner surface, and which has the shutter door wound around an outer periphery; and the urging means 23 which is arranged in the urging means storage space 21, and which urges the winding cylinder 22 in the winding direction of the shutter door with respect to the winding shaft 20. The winding cylinder 22 is formed by cylindrically joining a plurality of approximately arcuate sectional split pieces 31 and 32 together. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shutter door winder that winds a shutter door that opens and closes a front opening of a housing at an upper portion in the housing.

In conventional cabinets and article storage devices, a door-type shutter door that opens and closes the front opening of the housing is wound around a winding device disposed in the upper part of the housing when the door is opened. Yes (see, for example, Patent Documents 1 to 4).
Japanese Utility Model Publication No. 60-157893 Japanese Utility Model Publication No. 1-83898 Japanese Utility Model Publication No. 2-139298 Japanese Utility Model Publication No. 64-18295

  Among the above, as in Patent Document 4, a winding shaft in which a winding device is fixed to a housing, a winding cylinder that is rotatably fitted around the winding shaft and winds up a shutter door, and those And a spring that biases the winding cylinder in the winding direction of the shutter door. Although it is preferable in that it can be accommodated in the cylinder, on the other hand, it is not only expensive to form the winding cylinder with a pipe material such as a large-diameter steel pipe or an aluminum alloy as in Patent Document 4, but the inside The installation work of the spring arranged in the is troublesome.

  In view of the above-mentioned problems of the prior art, the present invention can be accommodated in the winding cylinder without providing the biasing means outside, and the biasing means into the winding cylinder, Another object of the present invention is to provide a shutter door winding device that can easily perform attachment work of other accessory parts, is inexpensive, and can maintain sufficient strength.

According to the present invention, the above problem is solved as follows.
(1) In a shutter door winder that winds up a shutter door that opens and closes the front opening of the housing at the upper part of the housing, the both ends are wound in the left-right direction fixed to both side plates of the housing. And a winding cylinder that is rotatably fitted around the winding shaft, has an urging means accommodation space formed on the inner surface, and winds up the shutter door on the outer periphery, and the urging means accommodation A plurality of biasing means disposed in the space and biasing the winding cylinder with respect to the winding shaft in the winding direction of the shutter door; The divided pieces are joined in a cylindrical shape.

  (2) In the above item (1), the winding cylinder has a polygonal cross section, and the joining pieces of the divided pieces adjacent to each other are joined inside and outside in a plane portion of the outer periphery.

  (3) In the above item (1) or (2), a part of the connecting member for fastening the end of the shutter door is superposed on the outer side of the joint part of the adjacent split pieces and coupled to the joint part. To do.

  (4) In any one of the above items (1) to (3), the urging means is configured such that the spiral winding portion is fitted on the winding shaft, and the outer side or the rescue direction from one end of the winding portion. A torsion coil spring in which an extending end extending to the winding shaft is fixed to the winding shaft, and an extending end extending in an eccentric direction from the other end of the winding is fixed to the winding cylinder; To do.

  (5) In the above item (4), a U-shaped notch is provided inward from the outer edge of the joining portion of the adjacent split pieces in the winding cylinder, and the winding in the torsion coil spring is provided in this notch. The extended end portion extending in the eccentric direction from the other end of the turning portion is locked.

  (6) In any one of the above items (1) to (5), both ends of the winding cylinder are closed by end plates pivotally fitted with a bearing on the winding shaft.

According to the present invention, the following effects can be achieved.
According to the first aspect of the present invention, it is possible to manufacture a winding cylinder having sufficient strength at a low cost by simply pressing the metal plates and joining them together, and before joining them together. By attaching the urging means to the winding shaft, and enclosing the urging means so as to surround it, the work of attaching the urging means to the winding cylinder can be easily performed. In addition, the biasing means is not exposed to the outside.

  According to invention of Claim 2, positioning at the time of joining of each division | segmentation piece is easy, and since a joining piece is a plane, joining pieces can be joined easily.

  According to the third aspect of the present invention, the connecting members can be coupled simultaneously at the time of joining the divided pieces, and the manufacturing work can be simplified.

  According to the fourth aspect of the invention, the configuration of the urging means can be simplified, and the attaching operation of the urging means to the winding shaft and the winding cylinder can be simplified.

  According to the fifth aspect of the invention, it is possible to simplify the work of attaching the torsion coil spring to the winding cylinder, and to increase the peel strength of the joint portion of the split piece.

  According to the sixth aspect of the present invention, the winding cylinder can rotate smoothly with respect to the winding shaft, and the strength of the end of the winding cylinder can be increased.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an external perspective view of a cabinet with a shutter door including an embodiment of the present invention, and FIG. 2 is an enlarged vertical side view taken along the line II-II in FIG.
As shown in FIGS. 1 and 2, this cabinet includes a housing 5 having a pair of left and right side plates 1, 1, a top plate 2, a bottom plate 3, and a rear plate 4 and having an open front surface. I have.

  The front door opening 5a of the housing 5 is fitted with a door-type shutter door 6 so as to open and close the front opening 5a by sliding in the vertical direction.

  A rectangular tubular lower frame 7 is provided at the lower end of the shutter door 6 so as to slightly protrude in the front-rear direction from the shutter door 6. Near the center of the front surface of the lower frame 7, an operating handle 8 that is recessed backward and a cylinder lock 10 in the locking device 9 are provided. Details of the locking device 9 will be described later.

As shown in FIG. 2 and FIG. 6, reinforcing rods 11 and 12 that face in the vertical direction are fixed to the front and rear portions of the inner surface of each side plate 1 in the housing 5.
A front guide groove 13 is provided in the front part of the front reinforcing rod 11 so as to be recessed outward and to guide the side end of the shutter door 6 slidably in the vertical direction.

The upper end of the front reinforcing rod 11 terminates at a position spaced apart from the top plate 2, and as shown in FIG. 11, the upper end is at the upper edge of the bulging portion 11 a bulging inward from the side plate 1. A substantially U-shaped bearing groove 14 is provided. In the example shown in FIG. 11, a short bent portion 14 a facing rearward is formed at the lower end of the bearing groove 14.
A portion in front of the bearing groove 14 at the upper edge of the bulging portion 11a is an inclined edge 15 that faces the front lower side.
In this example, a bearing member for bearing a guide shaft 40 described later by the bearing groove 14 is formed by the upper end portion of the front reinforcing rod 11, but such a bearing member is separated from the reinforcing rod 11, You may adhere to the inner surface of the both side plates 1 in the housing 5.

The upper end of the rear reinforcing rod 12 reaches the lower surface of the top plate 2, and a bracket 16 that extends in the front-rear direction is provided between the inner surface of the upper end portion and the upper end portion of the front reinforcing rod 11.
The bracket 16 is located below the top plate 2 and inward from the inner surfaces of the side plates 1 of the housing 5. A receiving groove 17 that is inclined toward the surface is provided.
The receiving groove 17 may be provided with a receiving groove on the front edge of the bracket 16 that hangs down from the top plate 2 side of the housing 5, preferably facing rearward and downward, inward from the inner surfaces of the side plates 1.

  When the bracket 16 and the reinforcing rods 11 and 12 are considered to be a part of the side plate 1, the inner surface of the side plate 1 where they do not exist is a concave portion 18, and the receiving groove 17 is formed of the concave portion 18. It can be said that it is provided at the leading edge. Moreover, this recessed part 18 may be provided from back, and the receiving groove 17 may be provided in the rear edge of the recessed part.

Next, the winding device 19 of the shutter door 6 and its mounting structure will be described with reference to FIGS.
The winding device 19 is for winding the shutter door 6 that opens and closes the front opening 5a of the casing 5 at the upper part in the casing 5, and as shown in FIG. 5, a winding shaft 20 that is fixed to the both side plates 1, 1 and faces in the left-right direction, and is rotatably fitted to the winding shaft 20, and an urging means housing space 21 is formed on the inner surface, and The take-up cylinder 22 wound around the shutter door 6 and the urging means accommodating space 21 are disposed in the winding direction of the shutter door 6 with respect to the take-up shaft 20. And a biasing means 23 for biasing.

  A diameter-reduced step portion 20a and a male screw portion 20b are sequentially provided at both ends of the winding shaft 20, and a ball bearing that rotatably supports an end plate 24 having a substantially regular octagon shape on the diameter-reduced step portion 20a. The bearing 25 is fitted. The bearing 25 is fixed to the take-up shaft 20 with a nut 26 that is screwed into the male screw portion 20b on the outside thereof.

  As shown in FIGS. 4 and 5, a nut 28 fixed to one end of a retaining plate 27 facing the direction orthogonal to the take-up shaft 20 is screwed onto and tightened to the outside of the nut 26 in the male screw portion 20b. The retaining plate 27 is fixed to the winding shaft 20.

In the illustrated example, the urging means 23 includes a spiral winding portion 29a fitted on the winding shaft 20 and an extending end portion 29b extending outward from one end of the winding portion 29a. 30 is fixed to the outer peripheral surface of the winding shaft 20, and an extended end portion 29c extending in the eccentric direction from the other end of the winding portion 29a is fixed to the winding tube 22 as described later. A torsion coil spring 29 is provided.
The extended end portion 29b may be bent from one end of the winding portion 29a so as to face the rescue direction, and fitted into a diametrical hole (not shown) provided in the winding shaft 20. Good.

The winding cylinder 20 is formed by joining a plurality of divided pieces 31 and 32 having a substantially arc shape in cross section into a cylindrical shape.
In the example shown in FIGS. 3 to 5, the winding cylinder 20 has a regular octagonal cross section (may be a hexagonal shape or other polygonal shape), and the joining pieces of the divided pieces 31 and 32 that are adjacent to each other in the plane portion of the outer periphery. It is formed by superposing 31 a and 32 a inside and outside and fastening them with a plurality of rivets (or small screws or clips) 33.

  A part of the connecting member 34 that secures the upper end of the shutter door 6 is superposed on the outer side of the overlapping portion of the split pieces 31 and 32, and a plurality of rivets 33 are joined to the joining pieces 31a and 32a. Yes.

  U-shaped notches 35, 35 facing inward are provided on the outer edges of the joining pieces 31 a, 32 a of the split pieces 31, 32 that overlap each other, and the notch 35, 35 has a torsion coil spring 29. By engaging the hook-shaped bent portion of the extended end portion 29c, the work of attaching the torsion coil spring 29 to the winding tube 20 can be simplified, and the joining pieces of the split pieces 31 and 32 can be used. The peel strength between 31a and 32a can be increased.

  As shown in FIG. 3, shallow notches 36 are provided at the center of both ends of the split pieces 31, 32, and the end plates 24 that close both ends of the winding cylinder 22 are provided with the notches 36. The divided pieces 31 and 32 can be positioned with respect to the end plate 24 by engaging with projections 37 provided on two opposite sides.

  Since the winding device 19 has such a configuration, it is possible to manufacture a winding cylinder 22 having sufficient strength at low cost simply by pressing the metal plates of the divided pieces 31 and 32 and joining them together. Before joining them together, the urging means 23 is attached to the take-up shaft 20, and a plurality of pieces 31 and 32 are joined together so as to surround them, so that the inside of the take-up cylinder 22 The urging means 23 can be easily attached to the urging means 23, and the urging means 23 is not exposed to the outside.

Next, a structure for attaching the winding device 19 to the housing 5 and an attachment procedure will be described.
As shown in FIGS. 4 and 5, the urging means 23, the winding cylinder 22, and the retaining plate 27 are attached to the winding shaft 20, and one end of the shutter door 6 is locked to the connecting member 34. In the state where the shutter door 6 is wound around the winding cylinder 22, both ends of the winding shaft 20 are once positioned in the recesses 18 of the both side plates 1 as shown in FIG. As shown in FIG. 3, the both ends of the winding shaft 20 are supported by left and right retaining plates 27, 27 facing downward, and the both retaining plates 27, 27 are lifted and tilted forward, thereby taking up the winding shaft. Both end portions of 20 are supported in the receiving grooves 17 in the bracket 16.

  In the case of the illustrated example, the nut 26 or 28 is directly supported by the receiving groove 17, and the winding shaft 20 is indirectly received by the receiving groove 17 via the nut 26 or 28. However, both end portions of the winding shaft 20 are projected outward from the nut 28 and the retaining plate 27, and the projecting portions are formed in the receiving grooves 17 facing the front provided at the front edge of the recess 18 in the side plate 1. You may make it receive directly.

  Thereafter, as shown in FIG. 9, both retaining plates 27, 27 are rotated rearward and upward to a position facing the substantially horizontal rear direction in which the take-up shaft 20 is pulled out from the receiving groove 17. When the portion is fixed to the reinforcing rod 12 with a machine screw (or rivet or clip) 38 on a substantially extended line in the direction in which the take-up shaft 20 extends from the receiving groove 17, the take-up shaft 20 is securely attached from the receiving groove 17. And is firmly fixed to the housing 5.

  Therefore, the winding shaft 20 can be easily mounted in the housing 5 without disassembling the housing 5 in a state where the shutter door 6 is wound up. Is prevented from coming off from the receiving groove 17 by the retaining plate 27 fixed to the side plate 1 and is securely attached to the housing 5.

  Further, since the urging means 23 for urging the shutter door 6 in the winding direction can be easily mounted in the housing 5 in a state where the urging means 23 is assembled to the winding shaft 20, Assembly work can be simplified.

Next, with reference to FIGS. 10 to 15, the mounting structure and mounting procedure of the guide roller 39 to the front upper portion in the housing 5 will be described.
The guide roller 39 is for guiding the shutter door 6 taken up by the take-up cylinder 22 so as to be directed downward by being drawn forward and hung around. The unit rollers 39a are rotatably supported by guide shafts 40 facing in the left-right direction so as to be spaced apart from each other in the left-right direction.

  In order to prevent each unit roller 39 a from moving in the axial direction of the guide shaft 40, the two unit rollers 39 a in the middle part have a pair of left and right pins 41 projecting from the outer peripheral surface of the guide shaft 40, 41, the unit rollers 39a on both sides are sandwiched between pins 41 projecting from the outer peripheral surface of the guide shaft 40 and support plates 42 provided in the vicinity of both ends of the guide shaft 40.

  The length of each support plate 42 in the vertical direction is larger than the radius of the guide roller 39, and the shaft hole 43 provided in the upper end portion of the support plate 42 is fitted around the both ends of the guide shaft 40, and The guide shaft 40 is fitted. The vicinity of both ends of the guide shaft 40 may be rotatably supported in the shaft hole 43 of the support plate 42.

As shown in FIG. 10 and FIG. 11, a stepped screw having an enlarged diameter head portion 44b at one end of a shaft portion 44a and a male screw portion 44c at the other end is provided at an intermediate portion in the vertical direction of each support plate 42. 44 is provided such that the enlarged-diameter head 44b and the shaft 44a protrude outward.
Further, a screw insertion hole 45 is provided at the lower portion of each support plate 42, and a recessed step 46 is provided at the lower front edge.

As shown in FIG. 6, an elongated hole 47 facing in the vertical direction with a lateral width slightly larger than the outer diameter of the shaft portion 44 a of the stepped screw 44 is provided in the upper portion of the bulging portion 11 a of the reinforcing rod 11. A large-diameter hole 48 having a diameter slightly larger than the outer diameter of the enlarged-diameter head 44 b of the stepped screw 44 is connected to the lower end portion of the long hole 47.
Further, a screw hole 49 is provided in a portion of the bulging portion 11a of the reinforcing rod 11 that is separated downward from the large-diameter hole 48 by a required distance.

  In order to mount the guide shaft 40 on the front upper part in the housing 5, the guide shaft 40 is supported almost horizontally with the left and right support plates 42, 42 tilted backward, and in this state, the guide shaft 40 Both ends are moved rearward and upward along the inclined edge 15 at the upper end of the bulging portion 11a of the reinforcing rod 11, fitted into the bearing groove 14, lowered along the bearing groove 14, and then the lower end thereof. It is made to position in the lowered position engaged with the bending part 14a of a part.

  In this state, the left and right support plates 42 are rotated around the guide shaft 40 to align the enlarged diameter head 44b and the large diameter hole 48 of the stepped screw 44, and then the enlarged diameter head 44b. Is fitted into the large-diameter hole 48 so that the shaft portion 44 a of the stepped screw 44 can move upward in the long hole 47.

  When the guide shaft 40 is in the lowered position, as shown in FIG. 12, the lower frame of the shutter door 6 is between the guide roller 39 and the upper rod 2a that hangs down from the front end of the top plate 2 in the housing 5. A gap S1 through which 7 can pass is formed.

  In addition, the guide shaft 40 rotates the left and right support plates 42 around the stepped screw 44 so as to face substantially the vertical direction, and then moves the shaft portion 44a of the stepped screw 44 upward in the elongated hole 47. By moving it upward while moving it, it can be positioned at the raised position that engages with the upper part of the bearing groove 14 as shown by the solid line in FIG.

  When the guide shaft 40 is in the raised position, a narrow gap S2 is formed between the guide roller 39 and the upper collar 2a, but the main body of the shutter door 6 can pass but the passage of the lower frame 7 is blocked. It is supposed to be.

  Further, as indicated by a solid line in FIG. 14, the thumbscrew 50 inserted into the screw insertion hole 45 in the left and right support plates 42 in the state where the guide shaft 40 is located at the raised position is screwed into the screw hole 49 in the reinforcing rod 11. The guide shaft 40 can be fixed to the housing 5 by being screwed onto and tightened.

  As an assembling procedure, after the shutter door 6 is wound around the winding cylinder 22, both ends of the winding shaft 20 are mounted in the housing 5 as described above, and then the guide roller 39 is installed. The mounted guide shaft 40 is mounted at the above-described lowered position, and in this state, as shown in FIGS. 12 and 13, the shutter door 6 wound around the winding cylinder 22 is moved forward from the lower frame 7. The shutter door 6 is hung around the guide roller 39 while the lower frame 7 is passed through the gap S1 between the guide roller 39 and the upper collar 2a toward the front and lower side, and as shown in FIG. In a state where the frame 7 is pulled forward and downward from the guide roller 39, the guide shaft 40 is lifted and fixed from the lowered position indicated by the imaginary line in FIG.

  Then, even if the hand is released from the lower frame 7 thereafter, the lower frame 7 is blocked by the narrow gap S2 between the guide roller 39 and the upper collar 2a, so that the entire shutter door 6 is wound around the winding cylinder 22. There is nothing.

  Accordingly, the take-up shaft 20 around which the shutter door 6 is wound and the guide shaft 40 attached with the guide roller 39 can be attached to the housing 5 without considering the attachment order, and after attaching them. The shutter door 6 can be pulled forward and hung around the guide roller 39, and the assembly workability of the shutter door 6 and the guide roller 39 to the housing 5 can be improved with a simple structure, and the guide shaft 40 can be improved. By moving from the raised position to the lowered position, inspections and repairs can be easily performed.

Next, with reference to FIGS. 15, 16, and 2, the mounting structure and mounting procedure of the closing plate 52 that closes the lower surface of the winding shaft accommodation space 51 in the upper part of the housing 5 will be described.
As shown in FIG. 2, the closing plate 52 includes a horizontal substrate 52a, a hanging piece 52b hanging from both ends of the substrate 52a, a rear piece 52c rising from the rear end of the substrate 52a, and a front end of the substrate 52a. An upward piece 52d that stands more upward, and a forwardly projecting piece 52e that is connected to the upper end of the upward piece 52d. The lower piece protrudes rearward from the lower end of the shutter door 6. 7 is a stopper that abuts against the rear upper end of the shutter 7 and prevents the shutter door 6 from rising further.

  The closing plate 52 is pivotally attached to the inner surface of the rear reinforcing rod 12 in the housing 5 with the rear portion of the left and right hanging pieces 52b having a shaft 53 (substitute with a small screw in the illustrated example) facing in the left-right direction. 15, as shown in FIG. 15, the open position that hangs downward from the shaft 53 and opens the lower end of the take-up shaft accommodating space 51, and the substrate 52 a becomes substantially horizontal as shown in FIG. The shaft housing space 51 can be turned to a closing position for closing the lower surface of the shaft housing space 51.

  When the closing plate 52 is in the closed position, the corner portions of the upward pieces 52d and the protruding pieces 52e are formed by the recessed step portions 46 at the lower end of the support plate 42 when fixed to the housing 5 with the thumbscrews 50. The projecting piece 52e is in contact with the abutting portion, and protrudes into the raising / lowering locus of the rear portion of the lower frame 7 at the lower end of the shutter door 6, and the closing plate 52 is located at the closed position. The closure plate 52 can be firmly fixed to the housing 5 by fixing the front portions of the left and right hanging pieces 52b to the inner surface of the front reinforcing rod 11 with a small screw 54 (fixing means). is there.

  As shown in FIG. 15, as shown in FIG. 15, after the rear portion of the closing plate 52 is pivotally attached to the housing 5 with the shaft 53, the lower frame 7 of the shutter door 6 is attached to the closing plate 52 as shown in FIG. Then, the closing plate 52 is turned to the closing position, and the front portion of the closing plate 52 is fixed to the inner surface of the housing 5 with the small screw 54 at that position.

  By doing so, even after the hand is released from the lower frame 7 of the shutter door 6 and the shutter door 6 is wound up by the winding device 19, the shutter door 6 has the closing plate 52 whose lower frame 7 is a stopper. From the fully open position in contact with the protruding piece 52e, it is not wound up further.

  Further, the corners of the upward pieces 52d and the projecting pieces 52e abut on the abutting portions formed by the recessed stepped portions 46 at the lower end of the support plate 42, so that the lower frame 7 of the shutter door 6 projects from the projecting pieces 52e. The impact at the time of abutting is received by this abutting portion, durability can be improved, and deformation of the protruding piece 52e can be prevented.

Further, when the support plate 42 is in the lowered position, the closing plate 52 is obstructed by the lower end of the support plate 42 and cannot move to the closed position. It can be confirmed that 42 is located at the raised position.
In the unlikely event that the wing screw 50 as the fixing means is removed and the support plate 42 tries to move from the raised position to the lowered position, the lower end of the support plate 42 comes into contact with the upper surface of the closing plate 52 and the support plate 42. Can be prevented, so safety can be improved.

  Since the closing plate 52 is configured as described above, the lower surface of the take-up shaft accommodating space 51 is opened by rotating the closing plate 52 downward from the closed position to the open position about the rear shaft 53. At the same time, the protruding piece 52e as a stopper is moved rearward and downward from a position where it can contact the lower frame 7 of the shutter door 6 and the restriction on the movement range of the shutter door 6 is released. Thus, it is possible to improve workability such as during inspection and repair, etc., and during connection work between the housing 5 and another housing or a wall surface.

  Further, when the closing plate 52 is rotated from the open position to the closed position, the lower surface of the winding shaft accommodation space 51 is closed, the inside of the winding shaft accommodation space 51 becomes invisible, and the appearance can be improved. The protruding piece 52e, which is a stopper, returns to a position where it can come into contact with the lower frame 7 of the shutter door 6, and the movement range of the shutter door 6 can be limited.

  As shown in FIGS. 1 and 2, the upper part of the front surface of the housing 5 is located above the lower frame 7 of the shutter door 6 when the shutter door 6 is fully open, with the lower frame 7 of the shutter door 6 in contact with the protruding piece 52 e. A closing plate 55 that covers this portion is detachably provided. The closing plate 55 may be omitted.

  In the illustrated example, the lower frame 7 at the lower end of the shutter door 6 is protruded rearward, and the rear portion thereof is a convex portion that abuts against the protruding piece 52e that is a stopper. Apart from the frame 7, it may be provided on the rear surface of the shutter door 6.

Next, details of the locking device 9 will be described with reference to FIGS. 1, 17, and 18.
The locking device 9 includes a cylinder lock 10 that can move the operating rod 56 in the left-right direction by rotating a key (not shown) inserted from the front, and the left and right sides of the lower frame 7 in the shutter door 6. A pair of left and right locking rods 58 that are engaged with and disengaged from the engaging holes 57 provided in the groove bottoms of the guide grooves 13 on the inner surfaces of the side plates 1 of the housing 5 by moving forward and backward from the ends. , 59, and the operating rod 56 of the cylinder lock 10 and the left and right locking rods 58, 59 are interlocked with the movement of the operating rod 56 in the left-right direction. And linking means 60 linking so as to move forward and backward.
The left and right engagement holes 57 are provided at the groove bottom portion of the guide groove 13 on the inner surface of the housing 5 so that the left and right locking rods 58 and 59 can be engaged and disengaged when the shutter door 6 is fully closed.

  The linking means 60 connects the first connecting means 61 that directly connects the operating rod 56 and one locking rod 58, and the operating rod 56 and the other locking rod 59 via the moving direction reversing mechanism 62. Second connection means 63.

  In the illustrated example, the first connecting means 61 is engaged with a connecting hole 64 provided at the left end portion of the operating rod 56 by fitting a crank-shaped bent portion 58 a provided at the right end portion of the left locking rod 58. It has a simple structure that just stops.

  The moving direction reversing mechanism 62 protrudes from a disc-shaped reversing link 66 pivotally attached to the lower frame 7 with a shaft 65 facing in the front-rear direction, and a rear surface (or front surface) of one end of the reversing link 66. And a pin 68 that engages with a long hole 67 that is long in the vertical direction provided at the right end of the actuating rod 56 and a reverse link 66 that is provided at the other end of the reversing link 66, and rearward at the left end of the right locking rod 59. And a bent hole 59a which is bent at a right angle toward the right side, and can be fitted and locked, and the bent part 59a of the right locking rod 59 is fitted into the connected hole 69. The second connecting means 63 is formed by engaging and locking.

Instead of the connecting hole 69 in the reversing link 66, a connecting pin (not shown) is provided on either the front or rear surface of the reversing link 66, and the left end of the right locking rod 59 is attached to this connecting pin. You may make it connect.
The locking rods 58 and 59 may be short-sized, and the operating rod 56 and the reversing link 66 in the moving direction reversing mechanism 62 may be coupled via a coupling rod.

The lower frame 7 in the shutter door 6 is composed of a frame main body 7a having a U-shaped cross section that opens rearward and a detachable cover 7b that closes the opening on the rear surface.
By removing this cover 7b from the frame body 7a, the locking device 9 can be inspected and repaired, and by attaching it to the frame body 7a, the appearance of the rear surface of the shutter door 6 can be improved. It is possible to prevent the locking device 9 from being inactivated or malfunctioning due to contact of an article accommodated in the housing 5 or the like.

  Further, in the illustrated example, the left and right engagement holes 57 are groove bottom portions of the guide groove 13 on the inner surface of the housing 5 so that the left and right engagement rods 58 and 59 can be engaged and disengaged when the shutter door 6 is fully closed. In addition to the engagement hole 57, the left and right locking rods 58, 59 are engaged and disengaged when the shutter door is opened to the intermediate position on the inner surface of the side plates 1 in the housing 5. Providing an intermediate stop engaging hole that is possible is meaningful because the shutter door 6 can be reliably locked not only at the fully closed position but also at an appropriate intermediate position.

Further, in this case, the intermediate position of the shutter door 6 at which the left and right locking rods 58, 59 can be engaged with and disengaged from the engagement hole for the intermediate stop, the lower end of the shutter door 6, that is, the lower end of the lower frame 7, is the housing. When the shutter door 6 is locked at an intermediate position, the lower end of the shutter door 6 is substantially aligned with the lower surface of the shelf board. Articles stored above the shelf cannot be taken out.
Therefore, for example, a product whose sales time is limited is accommodated above the shelf board, and an unrestricted product is accommodated below the shelf board. By locking in the position, it is possible to prevent the upper product from being taken out, which is convenient.

In addition, this invention is not limited only to the said embodiment, The implementation in many modified aspects is possible.
For example, the illustrated housing 5 can be tilted by 90 ° to the side, and the shutter door 6 can be used as a lateral opening.

  Further, the front and rear directions of the bracket 16 are reversed, both end portions of the winding shaft 20 are fitted into the receiving grooves 17 facing rearward from the front, and the retaining plate 27 is directed forward, and the side plate 1 It can also be fixed to.

  Furthermore, the winding cylinder 22 can be formed by three or four divided pieces.

It is an appearance perspective view of a cabinet provided with one embodiment of the present invention. It is a partial expansion vertical side view along the II-II line of FIG. It is a disassembled perspective view of a winding apparatus. It is a partially cutaway front view of a winding device. FIG. 5 is an enlarged longitudinal sectional side view taken along line VV in FIG. 4. It is a vertical side view of the upper part of a housing | casing. It is a vertical side view similar to FIG. 6 which shows the initial stage of attachment of the winding shaft to the housing. It is a vertical side view similar to FIG. 6 which shows the state of the attachment middle stage of the winding shaft to a housing | casing. It is a vertical side view similar to FIG. It is a vertical front view of a guide funnel, a guide shaft, and a support plate. It is an expansion perspective view of the principal part when a guide shaft is located in a lowered position. FIG. 7 is a longitudinal side view similar to FIG. 6, showing a state where the guide shaft is positioned at the lowered position and the shutter door is pulled forward. FIG. 13 is a longitudinal side view similar to FIG. 6, showing a state when the shutter door is further pulled forward and downward from the state shown in FIG. 12. FIG. 7 is a longitudinal side view similar to FIG. 6, showing a state where the guide shaft is in the lowered position by an imaginary line and a state where the guide shaft is in the raised position by a solid line. FIG. 7 is a longitudinal side view similar to FIG. 6, showing a state where the closing plate is attached as an open position. FIG. 7 is a longitudinal side view similar to FIG. 6, showing a state in the middle of rotating the closing plate from the open position to the closed position. It is a cross-sectional plan view which follows the XVII-XVII line of FIG. It is the expanded rear view which removed the cover of the lower frame of the shutter door and looked at the principal part of the locking device from back.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side plate 2 Top plate 2a Upper plate 3 Bottom plate 4 Rear plate 5 Case 5a Front opening 6 Shutter door 7 Lower frame 7a Frame body 7b Cover 8 Handle 9 Locking device 10 Cylinder lock 11, 12 Reinforcement rod 11a bulging part 13 Guide Groove 14 bearing groove 14a bent portion 15 inclined edge 16 bracket 16a hanging portion 17 receiving groove 18 recess 19 winding device 20 winding shaft 20a reduced diameter step portion 20b male screw portion 21 biasing means accommodating space 22 winding cylinder 23 biasing means 24 End plate 25 Bearing 26 Nut 27 Retaining plate 28 Nut 29 Torsion coil spring 29a Winding portion 29b, 29c Extension end portion 30 Set screw 31, 32 Split piece 31a, 32a Joining piece 33 Rivet 34 Connecting member 35, 36 Cutting Notch 37 Projection 38 Machine screw 39 Guide roller 39a Unit roller 40 Guide shaft 41 Pin 42 Support plate 43 Shaft hole 44 Stepped screw 4 4a shaft portion 44b enlarged diameter head portion 44c male screw portion 45 screw insertion hole 46 recessed stepped portion 47 long hole 48 large diameter hole 49 screw hole 50 thumb screw 51 take-up shaft accommodating space 52 closing plate 52a substrate 52b hanging piece 52c rear piece 52d upward piece 52e protruding piece (stopper)
53 Shaft 54 Machine screw (fixing means)
55 Closing plate 56 Operating rod 57 Engaging hole 58 Locking rod 58a Crank-shaped bent portion 59 Locking rod 59a bent portion 60 Linking means 61 First connecting means 62 Moving direction reversing mechanism 63 Second connecting means 64 Connecting hole 65 Shaft 66 Reverse link 67 Long hole 68 Pin 69 Connection hole

Claims (6)

A shutter door winding device for winding a shutter door that opens and closes a front opening of a housing at an upper portion in the housing,
Winding shafts whose both ends are fixed to both side plates in the housing and facing in the left-right direction, and are rotatably fitted around the winding shaft, and an urging means housing space is formed on the inner surface, and A take-up cylinder adapted to wind up the shutter door, and an urging force that is disposed in the energizing means accommodating space and urges the take-up cylinder with respect to the take-up shaft in the take-up direction of the shutter door. A shutter door winding device, wherein the winding tube is formed by joining a plurality of divided pieces having a substantially arcuate cross section into a cylindrical shape.   The winding device for a shutter door according to claim 1, wherein the winding cylinder has a polygonal cross section, and the joining pieces of the divided pieces adjacent to each other are overlapped on the inside and outside in a plane portion on the outer periphery.   The winding device for a shutter door according to claim 1 or 2, wherein a part of a connecting member for fastening an end portion of the shutter door is overlapped on an outer side of a joint portion between adjacent divided pieces and coupled to the joint portion. .   As for the urging means, a spiral winding portion is fitted on the winding shaft, and an extending end portion extending from the one end of the winding portion to the outside or the rescue direction is fixed to the winding shaft. The winding of the shutter door according to any one of claims 1 to 3, wherein an extended end portion extending in an eccentric direction from the other end of the winding portion is a torsion coil spring fixed to the winding cylinder. apparatus.   A U-shaped notch is provided inward from the outer edge of the joining portion of the adjacent split pieces in the winding cylinder, and this notch extends in the direction of eccentricity from the other end of the winding portion of the torsion coil spring. The shutter door winding device according to claim 4, wherein the extended end portion to be extended is locked.   The shutter door winding device according to any one of claims 1 to 5, wherein both ends of the winding cylinder are closed by end plates pivotally fitted to the winding shaft with bearings.

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