Electric drawer of a car refrigerator

Abstract

This utility model discloses an electric drawer for a car refrigerator, comprising a fixed base and a drawer mounted on the car refrigerator. The drawer includes a drawer support, on which a drawer body can slide. The fixed base has a reel and a motor. A fixed pulley is located at the front end of the drawer support. An elastic pull rope assembly is provided between the fixed base and the drawer. The drawer support also has an optical rotary encoder, which includes an elastic seat with a code wheel that rotates as the drawer body slides. When the drawer's movement encounters resistance, the motor is triggered and stalled. The controller stops the motor, and the electric drawer immediately stops sliding, thus achieving arbitrary fixing at a certain intermediate position. When the drawer is pushed or pulled by external force, the car refrigerator drawer can also follow the movement.

Description

Technical Field

[0001] This utility model relates to an electric drawer for a car refrigerator. Background Technology

[0002] As people's living standards continue to improve, cars have become an important means of transportation. In order to facilitate the refrigeration of food in cars, car refrigerators have been developed.

[0003] A car refrigerator is a refrigerated cabinet that can be carried in a car. Because cars tilt and vibrate while driving, the drawer of the car refrigerator can easily slide out of the car refrigerator, so electric drawers are generally used.

[0004] Existing electric drawers for car refrigerators have the following drawbacks: 1. Vibrations during car driving can trigger the automatic closing of the drawer, resulting in low accuracy in drawer push detection; 2. The electric drawer cannot be fixed in any intermediate position; it can only be fully open or fully closed, which is very inconvenient; 3. The drawer does not move when pushed or pulled by external force. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electric drawer for a car refrigerator that, when encountering resistance during sliding, immediately stops sliding and is thus fixed at a certain intermediate position; while when pushed or pulled by external force, the drawer can continue to move, thereby realizing the follow-up function of the car refrigerator drawer.

[0006] The purpose of this utility model is achieved as follows:

[0007] An electric drawer for a vehicle refrigerator includes a fixed base and a drawer mounted on the vehicle refrigerator. The drawer includes a drawer support, and a drawer body that can slide on the drawer support. The fixed base is equipped with a reel and a motor. A fixed pulley is provided at the front end of the drawer support. An elastic pull rope assembly is provided between the fixed base and the drawer. The drawer support is also equipped with an optical rotary encoder. The optical rotary encoder includes an elastic base, and a code wheel that can rotate with the sliding of the drawer body is provided on the elastic base.

[0008] The electric drawer of the car refrigerator described above is characterized in that one end of the elastic seat is movably hinged to the drawer bracket; one side of the other end of the elastic seat is provided with a protruding edge, the drawer bracket is provided with a hook that cooperates with the protruding edge, and a spring is provided between the elastic seat and the drawer bracket.

[0009] An electric drawer for a vehicle refrigerator as described above is characterized in that it further includes a controller, which is connected to a motor and an optical rotary encoder.

[0010] An electric drawer for a car refrigerator as described above is characterized in that the elastic pull cord assembly includes a first cord fixing seat on the drawer bracket; a second cord fixing seat on the drawer body; one end of the cord passes through the first cord fixing seat and is provided with a first compression spring, and the other end of the cord passes around a winding reel and a fixed pulley and is connected to the second cord fixing seat through a second compression spring.

[0011] The electric drawer of a vehicle refrigerator as described above is characterized in that an upper support is provided on the drawer bracket, the lower part of the drawer body is fixed to the upper support, and a slide rail is provided between the drawer bracket and the upper support.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes a motor-driven reel to wind up a rope that pulls the drawer of a car refrigerator, while a sliding rail ensures the drawer can move parallel to the ground. When the drawer encounters resistance, the motor stalls, and the controller stops the motor, causing the electric drawer to immediately stop sliding, thus allowing it to be fixed at any intermediate position. When the drawer is pushed or pulled by external force, the first and second compression springs cause displacement. The code wheel of the optical rotary encoder slides with the drawer, generating a displacement signal, which is transmitted to the controller. The controller then drives the drawer to continue moving according to the control logic, thereby achieving the drawer-following function of the car refrigerator. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 This is an exploded view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 A partial structural diagram;

[0017] Figure 4 yes Figure 3 Enlarged view of part A;

[0018] Figure 5 yes Figure 2 A partial structural diagram;

[0019] Figure 6 yes Figure 5 Enlarged view of part B. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] An electric drawer for a vehicle refrigerator includes a fixed base 1 and a drawer 2 mounted on the vehicle refrigerator. The drawer 2 includes a drawer support 21, on which a drawer body 22 can slide. The fixed base 1 is provided with a winding reel 3 and a motor 4. A fixed pulley 5 is provided at the front end of the drawer support 21. An elastic pull rope assembly 6 is provided between the fixed base 1 and the drawer 2. The drawer support 21 is also provided with an optical rotary encoder 7. The optical rotary encoder 7 includes an elastic base 71, on which a code wheel 72 can rotate as the drawer body 22 slides.

[0026] The optical rotary encoder 7 of this invention can convert mechanical quantities such as angular displacement and angular velocity into corresponding electrical pulses for digital output through photoelectric conversion. It also includes a light-emitting element and a photosensitive element.

[0027] One end of the elastic seat 71 of this utility model is movably hinged to the drawer support 21; a protruding edge 74 is provided on one side of the other end of the elastic seat 71, and a hook 75 that cooperates with the protruding edge is provided on the drawer support 21, and a spring 76 is provided between the elastic seat 71 and the drawer support 21. The elastic seat 71 and the drawer support 21 can be movably hinged through a pin 73, hinge, or other means, so that the other end of the elastic seat 71 can rotate, and the upper part of the encoder wheel 72 abuts against the bottom of the drawer body 22. When the drawer body 22 slides, the encoder wheel 72 also rotates.

[0028] This invention also includes a controller, which is connected to the motor and the optical rotary encoder.

[0029] The elastic pull rope assembly 6 of this utility model includes a first rope fixing seat 61 on the drawer bracket 21; a second rope fixing seat 62 on the drawer body 22; one end of the rope 63 passes through the first rope fixing seat 61 and is provided with a first compression spring 64, and the other end of the rope 63 passes around the winding reel 3 and the fixed pulley 5 and is connected to the second rope fixing seat 62 through the second compression spring 65.

[0030] The drawer support 21 of this utility model is provided with an upper support 23, and the lower part of the drawer body 22 is fixed to the upper support 23. A slide rail 24 is provided between the drawer support 21 and the upper support 23. The elastic pull rope assembly 6 and the optical rotary encoder 7 are both arranged between the upper support 23 and the drawer support 21.

[0031] The working principle of this invention is as follows: Motor 4 drives reel 3 to wind up rope 63, pulling the drawer switch of the car refrigerator. The slide rail ensures that the drawer can move parallel. When the drawer's movement encounters resistance, motor 4 is triggered to stall, and the controller stops motor 4. The electric drawer will immediately stop sliding, thus achieving arbitrary fixing at a certain intermediate position. When the drawer is pushed or pulled by external force, the first compression spring 64 and the second compression spring 65 can cause the drawer to move. The code wheel 72 of the optical rotary encoder 7 generates a displacement signal as the drawer slides, and transmits the displacement signal to the controller. The controller drives the drawer to continue moving according to the control logic, thereby realizing the follow-up function of the car refrigerator drawer.

Claims

1. An electric drawer for a vehicle refrigerator, comprising a mounting base (1) and a drawer (2) mounted on the vehicle refrigerator, the drawer (2) comprising a drawer support (21), and a drawer body (22) slidable thereon mounted on the drawer support (21), characterized in that... The fixed base (1) is provided with a winding reel (3) and a motor (4). The front end of the drawer bracket (21) is provided with a fixed pulley (5). An elastic pull rope assembly (6) is provided between the fixed base (1) and the drawer (2). The drawer bracket (21) is also provided with an optical rotary encoder (7). The optical rotary encoder (7) includes an elastic base (71). The elastic base (71) is provided with a code wheel (72) that can rotate with the drawer body (22).

2. The electric drawer of the vehicle-mounted refrigerator according to claim 1, characterized in that One end of the elastic seat (71) is movably hinged to the drawer support (21); a protruding edge (74) is provided on one side of the other end of the elastic seat (71), a hook (75) that cooperates with the protruding edge is provided on the drawer support (21), and a spring (76) is provided between the elastic seat (71) and the drawer support (21).

3. The electric drawer of the vehicle-mounted refrigerator according to claim 1, characterized in that It also includes a controller, which is connected to the motor and the optical rotary encoder.

4. The electric drawer of a car refrigerator according to claim 1, characterized in that... The elastic pull cord assembly (6) includes a first cord fixing seat (61) on the drawer bracket (21); a second cord fixing seat (62) on the drawer body (22); one end of the cord (63) passes through the first cord fixing seat (61) and is provided with a first compression spring (64), and the other end of the cord (63) passes around the winding reel (3) and the fixed pulley (5) and is connected to the second cord fixing seat (62) through the second compression spring (65).

5. The electric drawer of the vehicle-mounted refrigerator according to claim 1, characterized in that The drawer support (21) is provided with an upper support (23), the lower part of the drawer body (22) is fixed to the upper support (23), and a slide rail (24) is provided between the drawer support (21) and the upper support (23).

Images