Cupboard with up-down louvered door

Abstract

A cupboard has a body and an up-down louvered door. The door comprises a plurality of louvers, and a pair of lift racks to which the louvers are attached. The cupboard also includes a motor transmission apparatus, and two belts. When people need to open the door, the motor is actuated, whereby the lift racks lift and fold up, causing the louvers to fold up, and thus the door is opened. When people need to close the door, the motor is reversed, such that lift racks descend and extend, causing the louvers to extend, and thus the door is closed. The door can open adequately so as to facilitate taking out/putting in articles. No more space is occupied while opening the door, and the door is safe while closing. A small driving force can open/close the door.

Claims

1. A cupboard with an up-down louvered door, comprising: a cupboard body, a door configured in the body, the door having a plurality of louvers, and a pair of lift racks in which the louvers are configured; a motor transmission apparatus, and two belts; one end of both belts being secured to the motor transmission apparatus, and the other end of both belts being connected to the lift racks; wherein when opening the door, the motor transmission apparatus rotates, and the lift racks lift and fold up, causing the louvers to fold up, and the door is opened; wherein when closing the door, the motor transmission apparatus reverses, the lift racks descend and extend, causing the louvers to extend, and the door is closed; each lift rack comprising a plurality of first lift units, and a plurality of second lift units in which each second lift unit being connected to two adjacent first lift units; the louvers being connected to the first lift units, and each louver being secured to each corresponding first lift unit; each first lift unit comprising a first connective element securing to the louver, and a second connective element hinged to a first connective element; and each second lift unit comprising a third connective element hinged to a first connective element, and a fourth connective element hinged to the second connective element; both the third connective element and the fourth connective element being hinged together.

2. The cupboard of claim 1, wherein a guide protrusion is set up on first connective element; a guideway is configured in the body, for installing each of the lift racks; and a guide groove is configured in the guideway, for restricting the guide protrusion to move therein.

3. The cupboard of claim 2, wherein a mounting slot is configured at a left board of the body, and another mounting slot is configured at a right board of the body.

4. The cupboard of claim 1 wherein the motor transmission apparatus comprises a reversible electric motor, a first gear engaged with the motor, and a central gear engaged with the first gear; the central gear having two separate grooves for receiving the two belts, and the both belts are secured to and wound around the two separate grooves inversely.

5. The cupboard of claim 4, wherein the cupboard comprises a regulating wheels for adjusting the belts, and the regulating wheels are mounted adjacent opposite sides of the body.

6. A cupboard, comprising; a box with opposite side walls, a top, a bottom, a rear wall, and an open front; a door mounted on the box for movement between raised and lowered positions relative to the open front; the door having a plurality of louvers with opposite ends, and a pair of brackets at each end of the louvers to support the louvers; a pulley system mounted to the box and connected to the brackets; and a reversible motor mounted to the box and connected to the pulley system to raise and lower the brackets and louvers; the pulley system having a pair of belts attached to the brackets to raise and lower the brackets and louvers when the motor is actuated in opposite directions; and the pulley system including a central pulley, and the belts being wrapped in opposite directions around the pulley.

7. The cupboard of claim 6 wherein the brackets each have a plurality of fingers, with each finger attached to one end of one of the louvers.

8. The cupboard of claim 7 wherein the brackets each have a scissor jack, with the fingers connected to the scissor jack.

9. The cupboard of claim 6 wherein the motor has a drive gear and the pulley system has a driven gear in mesh with the drive gear.

10. The cupboard of claim 6 further comprising a track system to guide movement of the door between raised and lowered positions.

11. The cupboard of claim 10 wherein the track system includes a guide in each sidewall of the box, a track on each bracket member, mating with one of the guide tracks to guide movement of the brackets during opening and closing of the door.

12. The cupboard of claim 11 wherein each track is a channel in the sidewall, and the track member is at least one protrusion on the bracket received in the channel.

13. The cupboard of claim 6 wherein the pulley system includes belts and wheels to adjust tension in the belts.

14. The cupboard of claim 6 wherein the motor is laterally centered in the box.

15. The cupboard of claim 6 wherein the motor is mounted inside the box.

16. The cupboard of claim 6 wherein the louvers are pivotal between a lowered closed position and a raised open position.

17. A cupboard with an up-down louvered door, comprising: a cupboard body, a door configured in the body, the door having a plurality of louvers, and a pair of lift racks in which the louvers are configured; a motor transmission apparatus, and two belts; one end of both belts being secured to the motor transmission apparatus, and the other end of both belts being connected to the lift racks; wherein when opening the door, the motor transmission apparatus rotates, and the lift racks lift and fold up, causing the louvers to fold up, and the door is opened; wherein when closing the door, the motor transmission apparatus reverses, the lift racks descend and extend, causing the louvers to extend, and the door is closed; the motor transmission apparatus comprising a reversible electric motor, a first gear engaged with the motor, and a central gear engaged with the first gear; the central gear having two separate grooves for receiving the two belts, and the both belts being secured to and wound around the two separate grooves inversely.

18. The cupboard of claim 17, wherein the cupboard comprise a plurality of regulating wheels for adjusting the belts, and the regulating wheels are mounted adjacent opposite sides of the body.

19. The cupboard of claim 17, wherein each lift rack comprising a plurality of first lift units, and a plurality of second lift units in which each second lift unit being connected to two adjacent first lift units; the louvers being connected to the first lift units, and each louver being secured to each corresponding first lift unit.

20. The cupboard of claim 19, wherein each first lift unit comprising a first connective element securing to the louver, and a second connective element hinged to a first connective element; and each second lift unit comprising a third connective element hinged to a first connective element, and a fourth connective element hinged to the second connective element; both the third connective element and the fourth connective element being hinged together.

21. The cupboard of claim 20, wherein a guide protrusion is set up on each first connective element; a guideway is configured in the body, for installing each of the lift racks; and a guide groove is configured in the guideway, for restricting the guide protrusion to move therein.

22. The cupboard of claim 21, wherein a mounting slot is configured at a left board of the body, and another mounting slot is configured at a right board of the body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a structural schematic view of a cupboard according to the present invention, with the door closed;

(2) FIG. 2 is a structural schematic view of a cupboard according to the present invention, with the door partially opened;

(3) FIG. 3 is a structural schematic view of a cupboard according to the present invention, with the door opened fully;

(4) FIG. 4 is an exploded view of an embodiment of the cupboard, with the door partially opened;

(5) FIG. 5 is a structural schematic view showing the connection between lift racks and a motor transmission apparatus in the door shown in FIG. 4;

(6) FIG. 6 is a structural schematic view of one of the lift racks;

(7) FIG. 7 is a structural schematic view of a left/right side board of the cupboard;

(8) FIG. 8 is an enlarged view of the portion 8 in FIG. 7;

(9) FIG. 9 is a structural schematic view showing a guideway for the lift racks;

(10) FIG. 10 is an enlarged view of the portion 10 in FIG. 9;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(11) The present invention will be described hereinafter in details with reference to the FIGS. 1-10.

Embodiment 1

(12) A cupboard with an up-down louvered door is shown in FIGS. 1-10.

(13) The cupboard with the up-down louvered door comprises a cupboard body or box 100 with an open front, a door 200 on the body 100, and a handle 201 mounted on the door 200.

(14) The door 200 adopts a lift louvered mechanism, comprising a plurality of louvers 202, a pair of brackets or lift racks 300 and a guideway 400 for each lift rack 300.

(15) Each lift rack 300 comprises a plurality of first lift units 310, and a plurality of second lift units 320 in which each second lift unit 320 is connected to two adjacent first lift units 310. Each louver 202 is secured to each corresponding first lift unit 310.

(16) Each first lift unit 310 comprises a first connective element or finger 311 secured to the louver 202, and a second connective element 312 hinged to the first connective element 311. Each second lift unit 320 comprises a third connective element 321 hinged to the first connective element 311, and a fourth connective element 322 hinged to the second connective element 312. The third connective element 321 and the fourth connective element 322 are hinged together. Thus, the elements 311, 312, 321, 322 form a scissors-type jack assembly.

(17) As shown in FIGS. 1-4, the cupboard has a door containing multiple louvers 202 which are secured onto multiple first lift units 310 respectively, by any convenient means, such as a strong adhesive, snap-fitting, port connections or the like. More particularly, each louver 202 is secured onto each corresponding first connective element 311 such that the louvers 202 are mounted to the lift racks 300.

(18) The body 100 consists of a top board 101, a bottom board 102, a left board 103, a right board 104 and a rear board 105. As Shown in FIGS. 7-9, a mounting slot 1031 is configured at the left board 103, and a mounting slot 1041 is configured at the right board 104. Meanwhile, two guideways 400 are provided inside the mounting slots 1031 and 1041, respectively, with each lift rack 300 being mounted inside each guideway 400.

(19) As shown in FIGS. 6 and 10, a guide protrusion 330 extends from the first connective element 311, and a guide groove 401 is provided in the guideway 400. The guide protrusion 330 moves in the guideway 400 such that the lift rack 300 can lift and fold up, or, descend and extend, along the guide groove 401.

(20) When people need to open the door 200, the lift racks 300 lift and fold up, causing the louvers to fold up, the door is thus open.

(21) When people need to close the door, the lift racks descend and extend, causing the louvers to extend, the door is thus closed.

(22) Therefore, for the cupboard with the up-down louvered door of the present invention, the door can open adequately so as to facilitate taking out/putting in articles since the lift rack lifts and folds up, causing the louvers to fold up. In addition, no more space is occupied while opening the door, and it is safe while closing the door.

Embodiment 2

(23) In an alternative embodiment of the invention shown in FIGS. 4-5, the cupboard also includes a motor transmission apparatus 500, a first belt 504, and a second belt 505.

(24) The motor transmission apparatus 500 is mounted in a mounting plate 700 located beneath the top board 101. A baffle plate 800 is also mounted in the body 100.

(25) One end of both belts 504 and 505 is secured to the motor transmission apparatus 500, and the other end of both belts 504 and 505 is connected to the lift racks 300.

(26) The motor transmission apparatus 500 comprises a motor 501, a first gear 502 engaged with the motor 501, and a central gear 503 engaged with the first gear 502. The central gear 503 has two separate grooves for receiving the belts 504 and 505, which are also wound inversely or in opposite directions on the gear 503. Preferably, in this embodiment, the first gear 502 and the motor 501 are coaxial, and a transmission is arranged between the first gear 502 and a shaft of the motor 501.

(27) Actuation of the motor transmission apparatus 500 and drives the first gear 502 to rotate, which in turn rotates the central gear 503, thereby winding both belts 504 and 505 oppositely or inversely around the two separate grooves on the central gear 503, whereby the lift racks 300 lift and fold up, causing the louvers to fold up, and thus the door is opened.

(28) When people need to close the door, the motor 501 can be reversed, so that the door can be closed without human force.

(29) The cupboard features good stability and long lifetime. Preferably the central gear is configured at a central position, and both belts 504 and 505 have an identical length, such that the belts bear a same pulling force.

(30) Further the cupboard comprises a plurality of regulating wheels 600 for tightening/releasing the belts 504 and 505. The regulating wheels 600 are mounted on the left and right boards, for regulating the horizontalness of the louvers 202, making the belts bear the same pulling force during the door opening/closing.

(31) The cupboard features simple structure, low cost, good stability and long lifetime.

(32) It is understood that the belts may also be any other type of tension member, such as a cord, chain, rope, cable, or the like.

(33) The embodiment described hereinbefore is merely preferred embodiment of the present invention and not for purposes of any restrictions or limitations on the invention. It will be apparent that any non-substantive, obvious alterations or improvement by the technician of this technical field according to the present invention may be incorporated into ambit of claims of the present invention.