CN111772378B

CN111772378B - Automatic opening and closing drawer of cabinet

Info

Publication number: CN111772378B
Application number: CN201910265966.0A
Authority: CN
Inventors: 卢传旭; 黄鹏
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2022-04-19
Anticipated expiration: 2039-04-03
Also published as: CN111772378A

Abstract

The invention relates to an automatic switch drawer of a cupboard, which comprises a cupboard body (1), a drawer body (2) arranged in the cupboard body (1) in a drawing way and a driving mechanism (3) for driving the drawer body (2) to open and close; the method is characterized in that: the driving mechanism (3) comprises a flexible rack (31), a gear (32) meshed with the flexible rack (31) and a driving device (33) for driving the gear (32) to rotate; the flexible rack (31) is in driving connection with the drawer body (2); the gear (32) and the driving device (33) are arranged between the rear wall plate (21) of the drawer body (2) and the back plate (11) of the cabinet body (1) and are close to the back plate (11) of the cabinet body (1). The drawer type cabinet fully utilizes the spare space in the cabinet to arrange the driving mechanism, does not need to enlarge the volume of the cabinet, can open and close the drawer in the whole process, has compact structure and convenient operation, and greatly improves the use experience of people. The invention is especially suitable for being used with a disinfection cabinet.

Description

Automatic opening and closing drawer of cabinet

Technical Field

The invention relates to the field of cabinets, in particular to an automatic opening and closing drawer for a cabinet.

Background

In the case of a cabinet with a drawer, in order to facilitate opening and closing of the drawer, an automatic opening and closing mechanism is generally provided between the cabinet body and the drawer. For example, an embedded disinfection cabinet with electric drawing and pulling disclosed in CN200920191429.8, which comprises a cabinet body and two drawing baskets installed up and down in the cabinet body for storing tableware, wherein a door plate with a handle is installed at the front side of the drawing basket, guide sleeves are respectively and fixedly installed on the cabinet body walls at the two sides of the drawing basket, a guide rod movably inserted in the guide sleeves is fixedly installed at the back of the door plate, a tooth socket is opened on the guide rod, an opening opposite to the tooth socket is opened on the guide sleeve wall, a motor connected with a control circuit board is also installed on the cabinet body side wall, a transmission gear is fixedly installed on an output shaft of the motor, and the transmission gear tangentially extends into the opening of the guide sleeve and is meshed with the tooth socket on the guide rod; the motor base used for embedding the motor is arranged on the side wall of the guide sleeve, and the motor base and the guide sleeve are integrally formed in an injection molding mode or are fixed through screws.

The aperture of drawer is related to the length of guide bar among this technique, if needs are all opened, and the length of guide bar needs very long, influences the volume of the cabinet body.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic opening and closing drawer of a cabinet, which can realize the automatic opening of the drawer in the whole process without changing the volume of a cabinet body aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a cabinet automatic opening and closing drawer comprises a cabinet body, a drawer body and a driving mechanism, wherein the drawer body is installed in the cabinet body in a drawing mode, and the driving mechanism drives the drawer body to open and close; the method is characterized in that:

the driving mechanism comprises a flexible rack, a gear meshed with the flexible rack and a driving device for driving the gear to rotate;

the flexible rack is in driving connection with the drawer body; the gear and the motor are arranged between the rear wall plate of the drawer body and the back plate of the cabinet body and are close to the back plate of the cabinet body.

Preferably, the driving mechanism can be supported and arranged on a supporting plate, and the supporting plate is arranged in the cabinet body and is positioned below the corresponding drawer body.

In order to further limit the moving track of the rack, the flexible rack can be slidably arranged in the guide rail in a penetrating way; the guide rails are positioned below the corresponding drawer body and are supported on the supporting plates.

Furthermore, the guide rail is of a cylindrical structure, and a notch is formed in the upper surface of the guide rail along the length direction of the guide rail;

correspondingly, the flexible rack comprises a base body and a tooth part, the tooth part is arranged in the middle of the base body along the length direction of the base body, and the width of the tooth part is matched with the width of the notch. The structure is convenient for the guide rail to accurately position and guide the flexible rack, and can ensure the smooth sliding of the flexible rack along the guide rail.

The guide rail is preferably of a sleeve-shaped structure, and when the cabinet is a disinfection cabinet, the structure can prevent the rack from being irradiated and aged; meanwhile, in order to facilitate the meshing of the flexible rack and the gear, a notch can be formed in the upper surface of the guide rail.

The flexible rack in each scheme can be directly connected with the drawer body, preferably, the front end part of the flexible rack is connected with the ejector rod, the front end part of the ejector rod is in driving connection with the panel of the drawer body, and the rear part of the ejector rod is sleeved in the guide rail in a sliding mode.

The driving device in each scheme can be any one of the prior art according to the needs, preferably adopts a motor, and the motor can be supported and arranged on the supporting plate through a bracket;

and an output shaft of the motor is in driving connection with the gear through a gear shaft.

In order to make the transmission more stable and to facilitate the arrangement of each part in the existing spare space in the cabinet body, the output shaft of the motor is preferably connected with a first transmission gear in a driving manner, a second transmission gear is coaxially connected to the gear shaft, and the first transmission gear is meshed with the second transmission gear. This solution also facilitates the change of the transmission ratio.

In order to further limit the deformation direction of the flexible rack when the drawer is closed, a first guide part for limiting the deformation direction of the flexible rack can be arranged below the flexible rack; the rear part of the flexible rack is bent upwards under the action of the first guide piece.

The structure of the first guiding piece can be various, preferably, the first guiding piece comprises a rotating shaft arranged in the cabinet body and a roller rotatably connected to the rotating shaft; the roller is positioned below and behind the flexible rack.

Furthermore, a second limiting part for limiting the tail part of the flexible rack can be further connected to the back plate of the cabinet body.

Preferably, the second limiting part comprises a limiting sleeve and two rows of limiting rollers arranged in the limiting sleeve at intervals, and a guide space for accommodating the flexible rack is formed in a space between the two rows of limiting rollers.

Compared with the prior art, the automatic opening and closing drawer of the cabinet provided by the invention has the advantages that the driving mechanism is arranged by utilizing the spare space in the cabinet, the volume of the cabinet is not required to be enlarged, the drawer can be opened and closed in the whole process, the structure is compact, the operation is convenient, and the use experience of people is greatly improved. The invention is especially suitable for being used with a disinfection cabinet.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of an assembly structure of a driving mechanism, a support plate and a guide member according to an embodiment of the present invention;

fig. 3 is a longitudinal sectional view of fig. 2.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 3, the cabinet automatic opening and closing drawer includes:

the cabinet body 1 is of a conventional structure, an inner cavity of the cabinet body forms an accommodating cavity of the drawer body, and sliding rails (not shown in the figure) for supporting and limiting the drawer body 2 are arranged on two side walls of the cabinet body.

The drawer body 2 can be selected from any one of the prior art according to the requirement, and comprises a panel 22, two side plates 23 connected to the panel 22 and a rear wall plate 21 connected between the two side plates. The rear wall plate and the side plates can be made of solid plates or hollow structures.

A drive mechanism 3 for driving the opening and closing operation of the drawer body so as to open or close the drawer body; the method comprises the following steps:

drive arrangement 33, this embodiment is the motor, and the support mounting is on support 35, and support 35 supports and sets up on backup pad 4, and backup pad 4 is connected between the both sides wall of the cabinet body and is located the below of drawer body 2.

The output shaft of the motor is connected with a first transmission gear 37 in a driving mode, the support is arranged on the support 35, and the support 35 is arranged on the support plate 4 in a supporting mode.

The guide rail 34 is positioned below the corresponding drawer body 2 and used for limiting the flexible rack 31 and the ejector rod 5; the rear part of which is fixed to the support plate 4. The guide rail 34 in this embodiment is a sleeve-like structure with a notch 341 on the upper surface to facilitate the engagement of the rack with the gear.

The flexible rack 31 can deform under the action of external force and can be limited in the guide rail 34 in a sliding manner; the front end part of the drawer is connected with a mandril 5 in a driving way, the mandril 5 is positioned below the corresponding drawer body 2 and is connected with the panel 22 of the drawer body in a driving way, and the guide rail 34 is positioned below the corresponding drawer body 2 and is supported and arranged on the supporting plate 4.

The flexible rack 31 in this embodiment includes a base 311 and a tooth 312 provided in a middle portion of the base 311 in a length direction of the base 311. The width of the tooth 312 is adapted to the width of the slot 341 and is exposed to the slot 341. This configuration facilitates accurate spacing of the flexible rack by the guide rail 34, while facilitating smooth sliding of the flexible rack within the guide rail.

The supporting plate 4 is arranged below the drawer body 2 and close to the back plate 11 of the cabinet body. The gear 32 is located between the rear wall panel 21 of the drawer body 2 and the back panel 11 of the cabinet 1 and adjacent to the back panel 11 when the drawer body is fully closed.

A gear 32 disposed above the guide rail 34 and engaged with the flexible rack 31 at the notch 341; the gear shaft 36 is in driving connection with the gear 32, and the end part of the gear shaft 32 is coaxially connected with a second transmission gear 38; the first transmission gear 37 is meshed with the second transmission gear 38.

In order to make the transmission of the gear shaft more stable, the gear shaft 36 in this embodiment is supported on the support plate 4 by two support brackets 39. The gear shaft is further positioned.

When the drawer body is closed, the rear part of the ejector rod can be sleeved in the guide rail 34 in a sliding way.

And a first guide 6 disposed below the flexible rack 31 for limiting a deformation direction of the flexible rack 31, so that when the drawer body is closed, a rear portion of the flexible rack 31 is bent upward along the back plate 11 by the first guide 6. The method comprises the following steps:

a rotating shaft 61 and a roller 62 rotatably connected to the rotating shaft 61; two ends of the rotating shaft 61 are connected to two side walls of the cabinet body; the roller 62 is positioned below and behind the flexible rack 31; the flexible rack 31 abuts on the front upper surface of the roller 62.

The second guiding element 7 is used for limiting and guiding the tail part of the flexible rack, is arranged on the back plate of the cabinet body 1, and comprises a limiting sleeve 71 used for accommodating the tail part of the flexible rack 31 and two rows of limiting idler wheels 72 arranged in the limiting sleeve 71 at intervals, and a guiding space 73 for accommodating the flexible rack 31 is formed in a space between the two rows of limiting idler wheels 72.

The working principle of the automatic switch drawer of the cabinet is described as follows:

when the drawer is closed, the rear part of the flexible rack is attached to the back plate of the cabinet body, and the tail part of the flexible rack is accommodated in the limiting sleeve and limited between the two rows of limiting rollers; the middle portion of the flexible rack abuts against the upper front side surface of the roller.

When the drawer needs to be opened, the motor rotates forwards, torque is transmitted to the gear through the motor output shaft, the first transmission gear, the second transmission gear and the gear shaft in sequence, the gear rotates to drive the flexible rack meshed with the gear to move forwards along the guide rail, the ejector rod connected with the gear is pushed to move forwards, and the ejector rod pushes the drawer panel until the drawer is completely opened.

When the drawer is closed, the motor rotates reversely, each component moves reversely, the flexible rack pulls the ejector rod to move backwards, the ejector rod pulls the panel of the drawer body, the flexible rack retreats, the tail part of the flexible rack is bent upwards under the guiding action of the idler wheels of the first limiting part and moves upwards along the cabinet body back plate under the limiting action of the cabinet body back plate, the tail part of the flexible rack moves upwards to a certain degree to enter a limiting space between two rows of limiting idler wheels in the limiting sleeve, and the drawer body is completely closed at the moment.

Claims

1. A drawer for automatically opening and closing a cabinet comprises a cabinet body (1), a drawer body (2) which is arranged in the cabinet body (1) in a drawing way, and a driving mechanism (3) for driving the drawer body (2) to open and close; the method is characterized in that:

the driving mechanism (3) comprises a flexible rack (31), a gear (32) meshed with the flexible rack (31) and a driving device (33) for driving the gear (32) to rotate;

the flexible rack (31) is in driving connection with the drawer body (2); the gear (32) and the driving device (33) are arranged between the rear wall plate (21) of the drawer body (2) and the back plate (11) of the cabinet body (1) and are close to the back plate (11) of the cabinet body (1);

a first guide piece (6) for limiting the deformation direction of the flexible rack (31) is arranged below the flexible rack (31); the rear part of the flexible rack (31) is bent upwards under the action of the first guide piece (6), and the first guide piece (6) comprises a rotating shaft (61) arranged in the cabinet body (1) and a roller (62) rotationally connected to the rotating shaft (61); the roller (62) is positioned below and behind the flexible rack (31);

a second guide piece (7) for limiting the tail part of the flexible rack (31) is further connected to the back plate of the cabinet body (1), the second guide piece (7) comprises a limiting sleeve (71) and two rows of limiting rollers (72) arranged in the limiting sleeve at intervals, and a guide space (73) for accommodating the flexible rack (31) is formed in a space between the two rows of limiting rollers (72);

when the drawer is closed, the rear part of the flexible rack (31) is attached to the back plate of the cabinet body (1), and the tail part of the flexible rack is accommodated in the limiting sleeve (71) and limited between the two rows of limiting idler wheels (72); the middle of the flexible rack (31) abuts against the upper front side surface of the roller (62).

2. The cabinet automatic switch drawer according to claim 1, characterized in that said driving mechanism (3) is supported on a supporting plate (4), said supporting plate (4) being arranged inside said cabinet (1) and below the corresponding drawer body (2).

3. The cabinet automatic switch drawer according to claim 2, characterized in that said flexible rack (31) is slidably inserted in a guide (34); the guide rails (34) are positioned below the corresponding drawer body (2) and supported on the supporting plate (4).

4. The cabinet automatic switch drawer according to claim 3, characterized in that the guide rail (34) is a cylindrical structure, and a notch (341) is arranged on the upper surface of the guide rail along the length direction of the guide rail;

correspondingly, the flexible rack (31) comprises a base body (311) and a tooth part (312), wherein the tooth part (312) is arranged in the middle of the base body (311) along the length direction of the base body, and the width of the tooth part (312) is matched with that of the notch (341).

5. The cabinet automatic opening and closing drawer according to claim 4, characterized in that the front end of the flexible rack (31) is connected with a top bar (5), the front end of the top bar (5) is connected with a panel (22) of the drawer body (2) in a driving way, and the rear part of the top bar is slidably sleeved in the guide rail (34).

6. The cabinet automatic switch drawer according to claim 5, characterized in that said driving means (33) is an electric motor supported on said supporting plate (4) by means of a bracket (35);

the output shaft of the motor is in driving connection with the gear (32) through a gear shaft (36); an output shaft of the motor is in driving connection with a first transmission gear (37), a second transmission gear (38) is coaxially connected to the gear shaft (36), and the first transmission gear (37) is meshed with the second transmission gear (38).