JPH11107653A - Louver door device in box-body opening section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by installing guide rails in both vertical and horizontal directions, a corner member for connecting the guide rails and a tension spring on the left-right insides of a box body under specified states. SOLUTION: An upper horizontal guide rail 11, a front-section vertical guide rail 8 and a rear-section vertical guide rail are connected by a corner member 12 and fixed onto the internal side faces of a box body, and a louver door is fitted into opening guide grooves 10. Tension springs 21 are passed through the spring passages 15 of the vertical guide rails and engaging projecting pieces 26 are faced into the grooves 10, bolts 24 are screwed at the upper ends of the springs 21 in spring guide holes 22, and head sections 24b are retained at notched stage sections 23 and the springs 2 are hung. When the louver door is lowered, the start end of the louver door extends the springs 21 through the projecting pieces 26, and the weight of the louver door and the force of the springs balance and the louver door is held in arbitrary height. When the louver door is opened by light force and the rear end of the louver door is entered into the rear-section vertical guide rail, force similarly balances, and the start end of the louver door is held at the front edge side of a top plate. Accordingly, the passages of the louver door can be formed simply, and the tension springs can be mounted simply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door apparatus for opening and closing an opening formed from a front portion to an upper portion of a box body such as a cabinet.

[0002]

2. Description of the Related Art In a door apparatus of this type, if the door is eccentrically located at the rear or front part of the box, the opening and closing operation of the door is prevented from becoming heavy, so that the actual operation of the door is prevented.
No. 53, in order to slide and guide the left and right ends of the door for opening and closing the front opening of the box, the front vertical guide rail and the rear vertical guide rail between the upper end through a pair of front and rear guide wheels. A guide plate having a vertically long notch and a vertical hole adjacent to the front and rear longitudinal guide rails and communicating along the longitudinal direction thereof, and a tension spring is inserted into each of the vertical holes. Then, the lower end of each tension spring is fixed to the box, and a protruding piece facing the notch is fixed to the upper end of each tension spring.

[0003] When the start end of the door is lifted and the door is opened, and the door is stopped at the fully open position so that the front end of the door is located above the front vertical guide rail, a locking piece provided on the front end side of the door. Abuts against the lower surface of the projection at the upper end of the tension spring on the front vertical guide rail side to extend the tension spring, and at the start of the next closing operation, the front end of the armor door is directed downward by the tension spring force. Has the action of pulling.

[0004] Conversely, when the start end of the door is pulled down and closed, and the rear end of the door is located above the rear vertical guide rail and stopped at the fully closed position, the door is closed at the rear end side of the door. The locking piece provided abuts against the lower surface of the projection at the upper end of the tension spring on the rear vertical guide rail side to extend the tension spring. At the start of the next opening operation, the tension spring force is applied. It is configured to have the action of pulling the rear end of the door downward.

[0005]

However, in order to provide an equilibrium force for facilitating the opening and closing operation of the armchair using the tension spring, the base end side of the tension spring must be connected to the lower part of the box body. In addition, in the above publication, since there is no guide rail on the upper side of the box to guide the armor in a substantially horizontal state, a large opening is provided from the front to the upper part of the box. However, a door for opening and closing the opening could not be arranged.

In order to solve this inconvenience, Japanese Utility Model Publication No. 58-
In Japanese Patent No. 2876, in order to slide and guide the left and right ends of the shutter, the upper ends of the front vertical guide rail and the rear vertical guide rail communicate with each other via a horizontal guide rail. A vertically long equilibrium compression spring is disposed in a housing cylinder continuously provided along the line. When the opening end of the door is lifted and the door is opened and the door is stopped at the fully opened position so that the rear end of the door is positioned on the rear vertical guide rail, the upper end of the equilibrium compression spring located on the rear vertical guide rail side is attached to the door. Since the compression is performed by the protruding pieces fixed to the left and right side ends of the rear portion, when the next closing operation is started, the rear end of the door is pushed up by the balanced compression spring force.

On the other hand, when the start end of the door is pulled down and the door is closed, and the front end of the door is positioned on the front vertical guide rail and stopped at the fully closed position, the balance located on the front vertical guide rail side. By compressing the upper end of the compression spring with protruding pieces fixed to both left and right ends at the front of the door,
At the start of the next opening operation, it has the function of pushing up the front end of the door with the balanced compression spring force.

However, in this case, since the curved rail portion between the upper horizontal guide rail and the front and rear vertical guide rails is also integrally formed, when the size of the box in the front and rear direction changes, the guide is changed. The entire rail must be rebuilt, which increases production costs. The curved part (corner part) of this guide rail is made as a separate member.
No. 0292 is disclosed. However, none of the above prior arts has a function of both a mounting portion of a spring (biasing) means and the corner member.

The present invention solves this problem.
It is an object of the present invention to provide a door apparatus at a box opening that can reduce manufacturing costs.

[0010]

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that at least the box body is provided with a door slidably provided from a front part to a rear part through an upper part in the box body. In a door apparatus in a box opening configured to open and close an opening formed in a front portion, left and right side edges of the door are slidably guided to left and right inner surfaces of the box. Longitudinal guide rails having longitudinally long front and rear longitudinal guide rails and an upper lateral guide rail extending substantially horizontally, and corner guide grooves connecting ends of the longitudinal and lateral guide rails and communicating with the two open guide grooves. A corner member provided with an opening groove and a spring passage communicating with the opening guide groove in the at least vertical guide rail, and the corner member is inserted into the spring passage. A locking portion for locking a base end of the tension spring to be provided, and a distal end side of the tension spring is provided with an engagement protruding piece to which left and right side ends of the door can abut via the insertion groove. Things.

According to a second aspect of the present invention, there is provided a door apparatus in a box opening configured to open and close an opening formed from a front portion to an upper portion of the box with a slidable door. A longitudinally long front vertical guide rail and a rear vertical guide rail having opening guide grooves for slidably guiding the left and right side edges of the door on both left and right inner surfaces of the box, and are substantially horizontal. A longitudinally extending upper lateral guide rail, a corner member having a corner guide groove connecting the front and rear ends of the upper horizontal guide rail and the upper ends of both front and rear vertical guide rails and communicating with each opening guide groove, A lower horizontal guide rail extending forward through a corner member at a lower end of the guide rail; and the at least front vertical guide rail and the lower horizontal guide rail communicate with the opening guide groove. A corner member connected to an upper end of the front vertical guide rail and a lower lateral guide rail respectively, and a base end of a tension spring inserted into the spring passage. A front end side of the tension spring, and an engagement protruding piece that can contact the left and right ends of the door through insertion grooves in the front vertical guide rail and the lower horizontal guide rail. It is.

According to a third aspect of the present invention, in the armor device in the opening of the box body according to the first or second aspect, the corner member vertically and horizontally moves the locking portion at the base end of the tension spring. It is formed so as to intersect in the direction, and is formed in a substantially rectangular symmetrical shape in a side view.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described. 1 is a perspective view of a cabinet as an example of a box, FIG. 2 is a side sectional view thereof, FIG. 3 is an enlarged transverse sectional view showing a main part, and FIG. 5 is a perspective view of a guide rail, a corner member and a tension spring means. is there. As shown in FIGS. 1 to 3, a cabinet 1 as an example of a box includes left and right side plates 2 and 2, a bottom plate 3, a back plate 4, and a decorative top plate 5. Is smaller than the depth dimension of the cabinet 1 and an opening 6 extending from the front to the upper part of the cabinet 1 is formed. The opening 6 can be opened and closed by a door 7 described later in detail.

Since the door 7 is slidably disposed from the front to the rear of the cabinet 1 through the upper portion, the left and right ends of the door 7 are slidable on the inner surfaces of the left and right side plates 2 and 2. Guide groove 1 with a substantially U-shaped cross section for guiding
Longitudinally long front longitudinal guide rails 8 each having a zero
And a rear vertical guide rail 9, an upper horizontal guide rail 11, which also has an opening guide groove 10 having a substantially U-shaped cross section and is long in the front and rear direction, and vertical guide rails 8 and 9 at these front and rear portions.
And a pair of front and rear corner members 12, 12 having a 90-degree curved corner guide groove 13 communicating with the opening guide grooves 10, 10. .

The front vertical guide rail 8, rear vertical guide rail 9, and upper horizontal guide rail 11 have the same cross-sectional shape, and are made of extruded aluminum or glass short fiber reinforced plastic. An opening guide groove 10 having a substantially rectangular cross section in each of the guide rails 8, 9, 11
A flat insertion groove 14 and a spring passage 15 having a circular cross section communicating with each other on the back side are formed in parallel with each other over the entire length of each guide rail. As can be understood from FIGS. 3 and 5, the guide rails 8, 9, 11 have longitudinal projections 16, 16 on both left and right sides of the outer surface of the opening guide groove 10. When the respective guide rails are fitted into the fitting grooves 17 formed on the inner surfaces of the side plates 2, 2, the above-mentioned ridges 16, 16 are locked to the cut-and-raised claws 18 and the stepped portions 19 and cannot be removed. (However, the fitted and locked state of the upper side guide rail 11 is not shown).

The corner member 12 is formed by injection molding of plastic such as a glass short fiber reinforced type or aluminum die casting, and has a substantially square shape in a side view as shown in FIGS. 5 and 7 (a). The upper end of the vertical guide rail 8 (9) and the front and rear end of the upper horizontal guide rail 11 are connected to connect the opening guide groove 10 and the corner guide groove 13 with each other. A pair of protrusions 20 are provided so that the spring passage 15 and the spring guide hole 22 in the guide rail 8 (9) communicate with each other.

A pair of spring guide holes 22 formed in the corner member 12 are orthogonal to each other in FIG. 7 (a). A notch step 23 is formed.
A corner member 1 formed symmetrically with respect to a diagonal line from the upper left corner to the lower right corner in the square shown in FIG.
2, the upper end of the front vertical guide rail 8 and the front end of the upper horizontal guide rail 11 on the inner surface of one of the side plates 2 in the cabinet 1 can be connected by simply disposing the same shape and changing the orientation. Vertical guide rail 9
The upper end of the upper side guide rail 11 and the rear end of the upper side guide rail 11 can be connected, and the present invention can be applied to the connection of the same portion on the inner surface of the other side plate 2 as described above.

The coil-shaped tension spring 21 can be inserted into the spring guide hole and the spring passage 15 in the corner member 12, and the base end of the tension spring 21 is substantially equal to the winding pitch and the inner diameter. A bolt 24 having a pitch and a diameter is wound around the male screw portion 24a of the bolt 24, and the bolt 2
4 is configured such that a square head 24b or the like can be fitted and locked in the notch step 23. Further, a shaft rod 25 having a male screw portion 25a having the same pitch and diameter as described above is locked at the tip of the tension spring 21. And the spring passage 15
Engaging protruding piece 2 protruding from the side surface of shaft rod 25 inserted therein
6 is configured to face the inside of the opening guide groove 10 via the insertion groove 14.

As shown in FIG. 6, the armature 7 has a large number of armature pieces 7a, which are injection molded products of plastic such as glass short fiber reinforced type, in which the fitting projections 7b and the fitting grooves 7c rotate relative to each other. The handle member 27, which is fitted and immovably fitted and bent so as to be able to be pulled out, has a U-shaped cross section at the starting end of the armor 7 (the front side of the cabinet 1), and a finger of an operator can be hooked. . A hook (not shown) provided on the back surface of the handle member 27 and a lock rod 2 of a lock 28 provided on the front end side of the bottom plate 3.
9 can be locked and unlocked by being disengaged.

Next, the opening and closing operation of the door 7 with the above configuration will be described. First, the front and rear corner members 1
The front and rear ends of the upper horizontal guide rail 11 and the upper ends of the front vertical guide rail 8 and the rear vertical guide rail 9 are connected to each other and fixed to the inner surfaces of the left and right side plates 2 and 2 of the cabinet 1. The left and right ends of the door 7 are inserted into the opening guide grooves 10 of the front or rear vertical guide rails 8 and 9 from the lower end side. Alternatively, the front vertical guide rails 8 and the rear vertical guide rails 9 are fixed to the inner surfaces of the left and right side plates 2 and 2 of the cabinet 1 first, and the front vertical guide rails 8 and the rear vertical guide rails 9 are inserted into the open guide grooves 10 of the pair of left and right guide rails. The left and right ends of the door 7 are fitted, and then the tension springs 21 with the shafts 25 are inserted into the spring passages 15 in the front and rear vertical guide rails 8 and 9. It can face inside the groove 10.
Next, a spring guide hole 22 in each corner member 12 is formed.
The upper end of the tension spring 21 is inserted into the
When the male screw portion 24a of the bolt 24 is screwed and cannot be removed, and the head portion 24b of the bolt 24 is fitted into the notch step portion 23, the tension spring 21 can be suspended downward so as not to fall off.

In this state, the rear end of the door 7 located in the opening guide groove 10 in the rear vertical guide rail 9 is located above the engaging projection 26 projecting from the spring passage 15 on the rear side through the insertion groove 14. Located in. Similarly, the door 7 located in the opening guide groove 10 in the front vertical guide rail 8.
Is located above the engaging projection 26 protruding from the front side spring passage 15 through the insertion groove 14.

To close the opening 6 of the cabinet 1, the handle member 27 at the start end (front end) of the door 7 is lowered. When the door 7 is further lowered from a state in which the left and right ends on the starting end side of the door 7 are in contact with the upper surfaces of the engaging projections 26 of the left and right shaft rods 25, 25, the tension springs 21 and 21 are extended.
Is extended. From this state, the gravity of the portion of the vertical armor 7 located on the pair of left and right front vertical guide rails 8 and 8 and the upward biasing force due to the extension of the pair of tension springs 21 and 21 are balanced. Even if the operator releases the handle 27, the armor 7 can be held at an arbitrary height position without suddenly dropping or rising (see FIGS. 4 and 8A).

Then, the handle member 27 of the door 7 is lowered so as to contact the bottom plate 3 and the lock 28 is locked,
The opening 6 of the cabinet 1 can be closed. When the lock is unlocked and the door 7 is pulled upward to open the opening 6, the door 7 is subjected to upward urging force by the tension springs 21, 21 on the left and right sides on the front side. The door can be pulled up by force.

Next, the rear end side of the further raised armor 7 enters the rear vertical guide rails 9, 9, and the engaging protrusion of the shaft 25 mounted on the lower ends of the pair of left and right tension springs 21 adjacent thereto. After contacting the pieces 26, 26, the tension springs 21, 21 are extended in the same manner as described above, so that the gravity of the vertical armor 7 located on the pair of left and right rear vertical guide rails 9, 9 and The upward biasing force due to the extension of the pair of extension springs 21 and 21 is balanced, so that even if the operator releases the handle member 27, the starting end of the armor door 7 does not suddenly move backward, and a light force is applied. Thus, the start end of the door 7 can be set and held on the front edge side of the decorative top plate 5 (see FIG. 8B).

In the embodiment schematically shown in FIGS. 9A and 9B, a pair of left and right front vertical guide rails 8, 8 are provided.
The head members 24b, 2
4b, the tension springs 21 and 21 are suspended from the
The engaging projection 26 protruding from the shaft 25 at the lower end of each tension spring 21 inserted through the opening 5 faces the opening guide groove 10.

Corner members 12, 12 are connected to the lower ends of a pair of right and left rear vertical guide rails 9, 9, and lower horizontal guide rails 30, 30 are connected to these corner members 12, 12 in a forward direction. Each of the lower horizontal guide rails 30 has the same cross-sectional shape as the rear vertical guide rail 9, and includes an opening guide groove 10, an insertion groove 14, a spring passage 15, and the like. Each lower side guide rail 30
The head 24b of the bolt 24 which is the base end of the tension spring 21 inserted through the spring passage 15 of the horizontal corner member 1
2 is engaged with the notch step 23. Further, the engaging projection 26 protruding from the shaft rod 25 at the tip of the tension spring 21 faces the opening guide groove 10.

FIG. 8 shows the length of the shutter 7 in this embodiment.
(A) is formed to be longer than that shown in FIG. In this embodiment, when the door 7 is closed, the balance action by the tension spring 21 attached to the front vertical guide rails 8 is the same, but when the door 7 is greatly opened, the rear end of the door 7 is closed. Is the lower horizontal guide rail 3
After entering the opening guide groove 10 of FIG. 0, after coming into contact with the engaging projection 26 provided at the tip of the tension spring 21 attached thereto, the urging force is applied in the direction of pushing the rear end portion of the door 7 backward. Can work. Note that the head 24b of the bolt 24 may be separately fixed with a screw so that the head 24b of the bolt 24 does not come off from the notch step 23 in the lower corner member 12.

[0028]

As described above, according to the first aspect of the present invention, at least the front portion of the box is formed by the slidable door provided from the front to the rear through the upper portion of the box. Door device in a box opening configured to open and close the opened opening, an opening guide for slidably guiding the left and right side ends of the door on both left and right inner side surfaces of the box. A corner having longitudinally long front and rear longitudinal guide rails having a groove and an upper horizontal guide rail which is substantially horizontal and a corner guide groove connecting end portions of the vertical and horizontal guide rails and communicating with both opening guide grooves. And at least the longitudinal guide rail has an insertion groove and a spring passage communicating with the opening guide groove over the entire length, and the corner member has a tension spring inserted through the spring passage. Includes a locking portion for locking the proximal end, the distal end side of the tension spring, the right and left side end portions of the shutters via the insertion groove is those with abutment engagement protrusion.

According to this configuration, the corner member is provided with the corner guide groove communicating with the opening guide groove between the vertically long guide rail at the front and rear portions and the horizontally long guide rail at the top, so that the vertical and horizontal guide rail and the corner are provided. By connecting with the member, a long passage through which the left and right ends of the door can slide can be easily formed. And since the corner member is also provided with a locking portion that can lock the base end of the tension spring communicating with the spring passage in the vertical guide rail, the base end of the tension spring for maintaining balance with the weight of the door is provided. This has the effect that the work of mounting can be made extremely simple.

[0030] Therefore, an effect is obtained that this type of door apparatus can be easily assembled. According to a second aspect of the present invention, there is provided a door apparatus in a box opening configured to open and close an opening formed from a front part to an upper part of the box with a slidable door. On the left and right inner side surfaces, a longitudinally long front vertical guide rail and a rear vertical guide rail having an opening guide groove for slidably guiding the left and right side end portions of the door are substantially horizontally long. An upper horizontal guide rail, a corner member having a corner guide groove connecting the front and rear ends of the upper horizontal guide rail and the upper ends of the front and rear vertical guide rails and communicating with each opening guide groove, and A lower lateral guide rail extending forward through a corner member at a lower end, and at least the front vertical guide rail and the lower lateral guide rail are each provided with an insertion groove communicating with the opening guide groove; A spring member is provided over the entire length, and a corner member connected to the upper end of the front vertical guide rail and the lower side guide rail is provided with a locking portion for locking a base end of a tension spring inserted into the spring passage, On the distal end side of the tension spring, there is provided an engaging projection that can contact the left and right ends of the door with the front vertical guide rail and the lower horizontal guide rail through insertion grooves.

According to this structure, in the same manner as in the first aspect of the invention, the corner member can easily connect the guide rails and simultaneously communicate the opening guide grooves and the extension springs, and can also easily connect the corner members to a cabinet or the like. When the long door for opening and closing the large opening from the front to the top of the box is opened widely, the rear end of the door can enter the lower side guide rail. In this case, engaging projections provided at the distal end of a tension spring whose base end is locked to a corner member connecting the lower end of the rear vertical guide rail and the rear end of the lower horizontal guide rail are provided on both left and right ends of the door. The urging force that pushes the rear end of the door backward acts, so that a light force can be executed even when the door is closed.

According to a third aspect of the present invention, in the armor device in the opening of the box body according to the first or second aspect, the corner member vertically and horizontally moves the locking portion at the base end of the tension spring. It is formed so as to intersect in the direction, and is formed in a substantially rectangular symmetrical shape in a side view. By forming the corner members in a symmetrical shape in this way, the corner members having the same shape can be applied to both the left and right sides and the front and rear positions, and the effect of reducing the manufacturing cost can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cabinet with a door apparatus.

FIG. 2 is a side sectional view of a cabinet.

FIG. 3 is an enlarged sectional view taken on line III-III of FIG. 2;

FIG. 4 is a perspective view showing a state of a tension spring when a door is positioned on a front side of a cabinet.

FIG. 5 is a perspective view of vertical and horizontal guide rails, tension springs, and corner members.

FIG. 6 is a partially cut-away enlarged side sectional view of a door.

7A is a side view of a corner member, and FIG.
FIG. 7 (a) is a view taken along line bb, and FIG. 7 (c) is cc of FIG. 7 (a).
FIG.

FIG. 8A is a schematic diagram showing a fully closed state of the shutter in the first embodiment, and FIG. 8B is a schematic diagram showing a fully opened state of the shutter.

FIG. 9A is a schematic diagram showing a fully closed state of the shutter in the second embodiment, and FIG. 9B is a schematic diagram showing a fully opened state of the shutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet 2, 2 Side plate 7 Shutter door 8 Front guide rail 9 Rear guide rail 10 Opening guide groove 12 Corner member 13 Corner guide groove 14 Insertion groove 15 Spring passage 20 Projection piece 21 Tension spring 22 Spring guide hole 23 Notch step 24 Bolt 24a, 25a Male screw part 24b Head 25 Shaft rod 26 Engagement protruding piece 27 Handle member

Claims (3)

[Claims] 1. A box opening configured to open and close at least an opening formed in at least a front portion of the box, with a door slidably provided from a front portion to an upper portion and a rear portion in the box. A longitudinally long front and rear longitudinal guide rail having an opening guide groove for slidably guiding the left and right side edges of the door on both left and right inner surfaces of the box. An upper horizontal guide rail, and a corner member having a corner guide groove connecting the ends of the vertical and horizontal guide rails and communicating with both the open guide grooves. The extension member includes an insertion groove and a spring passage communicating with the groove over the entire length, and the corner member includes a locking portion that locks a base end of a tension spring inserted into the spring passage. The end side, shutters device in the box opening, characterized in that the left and right side ends of the louver through the insertion groove is provided with an abutment engagement protrusion. 2. A door apparatus in a box body opening configured to open and close an opening formed from a front part to an upper part of the box body with a slidable door, wherein both sides of the box body have left and right inner surfaces. A longitudinally long front vertical guide rail and a rear vertical guide rail having an opening guide groove for slidably guiding the left and right side ends of the door, and an upper horizontal guide rail that is substantially horizontal, A corner member having a corner guide groove connecting the front and rear ends of the upper horizontal guide rail and the upper ends of the front and rear vertical guide rails and communicating with each opening guide groove, and a corner member at a lower end of the rear vertical guide rail. And a lower horizontal guide rail extending forward. The at least front vertical guide rail and the lower horizontal guide rail have an insertion groove and a spring passage communicating with the opening guide groove. A corner member connected to an upper end of the front vertical guide rail and a lower lateral guide rail, respectively, comprising a locking portion for locking a base end of a tension spring inserted into the spring passage; Characterized in that the front side of the opening is provided with engaging projections that can contact the left and right ends of the door through insertion grooves in the front vertical guide rail and the lower horizontal guide rail. Door device in the department. 3. The corner member according to claim 1, wherein a locking portion at a base end of the tension spring is formed so as to intersect in a vertical and horizontal direction, and is formed in a substantially rectangular symmetrical shape in a side view. A door apparatus in the opening of the box according to claim 2.