Door closing and locking mechanism of drawer type vehicle-mounted refrigerator

Abstract

The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to a door closing and locking mechanism of a drawer type vehicle-mounted refrigerator. The refrigerator comprises a refrigerator body, a drawer is arranged in the refrigerator body, a guide rail is arranged at the bottom of the drawer, the drawer is movably arranged in the refrigerator body through the guide rail, a first lock hook is arranged on the back face of the drawer, and a locking assembly is further arranged in the refrigerator body. The contact surface of the first lock hook and the second lock hook is an arc surface, especially an arc surface with the axis of the rotating shaft as the center, when the drawer is subjected to strong pulling force in the horizontal door opening direction, counter force can be generated through geometrical characteristics of the contact surface, the two lock hook parts are prevented from deforming in the vertical direction to cause unlocking, and the drawer is difficult to be unlocked by strong pulling; the stability and the safety of locking are enhanced; and during active unlocking movement, the contact surface and the rotating lock hook have the same movement track, so that active unlocking is not hindered, and the smoothness of normal unlocking operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to a door closing and locking mechanism for a drawer-type vehicle-mounted refrigerator. Background Art

[0002] A drawer-type vehicle-mounted refrigerator is a refrigerator installed on a vehicle. The way of opening and closing the door and taking and placing items is similar to that of a drawer. It is realized by pulling out or pushing in the refrigerator door like a drawer, which is convenient for users to store and take refrigerated or frozen items in the vehicle.

[0003] Drawer-type vehicle-mounted refrigerators usually use the drawer method to open and close the door to take and place items, and a mechanical locking hook is used for closing and locking the door. However, the existing locking hook adopts a sliding locking pin and a flat contact structure, which has many defects. When the locking hook is forcibly pulled out, the deformation direction is the same as the movement direction of the unlocking mechanism, resulting in unreliable door closing and locking, low pulling force, and being easily forcibly pulled out. Especially when the vehicle-mounted refrigerator is full, when the vehicle is accelerating uphill or downhill, the drawer is prone to automatically pop out, seriously affecting the normal use and safety. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a door closing and locking mechanism for a drawer-type vehicle-mounted refrigerator to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions. It includes a refrigerator box body, a drawer is arranged in the refrigerator box body, a guide rail is arranged at the bottom of the drawer, the drawer is movably arranged in the refrigerator box body through the guide rail, a first locking hook is arranged on the back of the drawer, and a locking component is also arranged in the refrigerator box body;

[0006] The locking component includes an "L"-shaped connecting rod, the "L"-shaped connecting rod is movably arranged in the refrigerator box body through a rotating shaft, a torsion spring is arranged on the "L"-shaped connecting rod, the other end of the torsion spring is arranged on the refrigerator box body, a second locking hook is arranged at one end of the "L"-shaped connecting rod, the second locking hook is arranged in cooperation with the first locking hook, and an electric telescopic cylinder is arranged on one side of the refrigerator box body, and the telescopic rod of the electric telescopic cylinder abuts against the other end of the "L"-shaped connecting rod.

[0007] Preferably, a door body is arranged on the front of the drawer.

[0008] Preferably, the top of the second locking hook is in a slope shape.

[0009] Preferably, a protective shell is arranged on the side of the refrigerator box body, and the electric telescopic cylinder is arranged in the protective shell.

[0010] Preferably, a soft rubber pad is provided on the back of the end of the "L"-shaped connecting rod close to the electric telescopic cylinder.

[0011] Compared with the prior art, the above technical solution of the present utility model has the following beneficial technical effects:

[0012] The contact surfaces of the first locking hook and the second locking hook of the present utility model are arc surfaces, especially the arc surface centered on the axis of the rotating shaft. When the drawer is subjected to a strong pulling force in the horizontal door opening direction, a reaction force can be generated through the geometric characteristics of the contact surface to prevent the two locking hook components from deforming in the vertical direction and causing unlocking, making it difficult for the drawer to be unlocked by strong pulling, enhancing the stability and safety of the locking; and because the contact surface is an arc surface centered on the rotating shaft, during the active unlocking movement, the movement trajectory of the contact surface is the same as that of the rotating locking hook, and it will not hinder the active unlocking, ensuring the smoothness of the normal unlocking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model in the locked state;

[0014] Figure 2 is a schematic diagram of the cooperation between the first locking hook and the second locking hook of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the present utility model in the unlocked state.

[0016] Reference numerals: refrigerator body 1, drawer 2, door body 20, first locking hook 21, guide rail 22, locking assembly 3, "L"-shaped connecting rod 30, second locking hook 31, rotating shaft 32, torsion spring 33, electric telescopic cylinder 34, protective shell 35, soft rubber pad 36. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0018] As Figures 1 - 3 shown, a door closing and locking mechanism for a drawer-type vehicle-mounted refrigerator proposed by the present utility model includes a refrigerator body 1, a drawer 2 is arranged in the refrigerator body 1, a guide rail 22 is arranged at the bottom of the drawer 2, and with the aid of the guide rail 22, the drawer 2 can be movably arranged in the refrigerator body 1, a first locking hook 21 is arranged on the back of the drawer 2, and at the same time, a locking assembly 3 is also arranged in the refrigerator body 1;

[0019] The locking assembly 3 includes an "L"-shaped connecting rod 30, which is flexibly arranged in the refrigerator cabinet 1 through a rotating shaft 32. A torsion spring 33 is installed on the "L"-shaped connecting rod 30, and the other end of the torsion spring 33 is fixed on the refrigerator cabinet 1. A second locking hook 31 is arranged at one end of the "L"-shaped connecting rod 30, and the second locking hook 31 is adapted to cooperate with the first locking hook 21. In addition, an electric telescopic cylinder 34 is installed on one side of the refrigerator cabinet 1, and the telescopic rod of the electric telescopic cylinder 34 abuts against the other end of the "L"-shaped connecting rod 30;

[0020] A door body 20 is arranged on the front of the drawer 2. The top of the second locking hook 31 is in a ramp shape. A protective shell 35 is arranged on the side of the refrigerator cabinet 1. The electric telescopic cylinder 34 is arranged in the protective shell 35. A soft rubber pad 36 is arranged on the back of the end of the "L"-shaped connecting rod 30 close to the electric telescopic cylinder 34.

[0021] Preferably, by setting the soft rubber pad 36, the extruded end of the "L"-shaped connecting rod 30 can be protected to avoid damage caused by the long-term use of the electric telescopic cylinder 34.

[0022] During the use process, when it is necessary to open the drawer 2 to take items, first, press the electric control button, and the refrigerator electric control system will send a signal to the electric telescopic cylinder 34. At this time, the electric telescopic cylinder 34 extends the telescopic rod, pushing the "L"-shaped connecting rod 30. The "L"-shaped connecting rod 30 will rotate counterclockwise by a certain angle along the rotating shaft 32. In this case, the second locking hook 31 releases the first locking hook 21, and the user can drag the door body 20 to pull out the drawer 2 to take the required items; after the unlocking operation is completed, the electric telescopic cylinder 34 will retract the telescopic rod, and the "L"-shaped connecting rod 30 will reset under the action of the torsion spring 33; when the user pushes the drawer 2 back, the first locking hook 21 will press down the second locking hook 31 along the inclined surface of the second locking hook 31 until the drawer 2 is completely pushed back. Under the action of the torsion spring 33, the second locking hook 31 and the first locking hook 21 are stuck to each other to complete the locking.

[0023] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

1. A closing and locking mechanism for a drawer-type vehicle-mounted refrigerator, which comprises a refrigerator body (1), a drawer (2) is arranged in the refrigerator body (1), a guide rail (22) is arranged at the bottom of the drawer (2), and the drawer (2) is movably arranged in the refrigerator body (1) through the guide rail (22), and is characterized in that: A first locking hook (21) is provided on the back of the drawer (2), and a locking assembly (3) is further provided in the refrigerator cabinet (1). The locking assembly (3) includes an "L"-shaped connecting rod (30). The "L"-shaped connecting rod (30) is movably arranged in the refrigerator cabinet (1) through a rotating shaft (32). A torsion spring (33) is arranged on the "L"-shaped connecting rod (30), and the other end of the torsion spring (33) is arranged on the refrigerator cabinet (1). A second locking hook (31) is arranged at one end of the "L"-shaped connecting rod (30). The second locking hook (31) and the first locking hook (21) are arranged in cooperation with each other. An electric telescopic cylinder (34) is arranged on one side of the refrigerator cabinet (1), and the telescopic rod of the electric telescopic cylinder (34) abuts against the other end of the "L"-shaped connecting rod (30).

2. The closing and locking mechanism of a drawer-type vehicle refrigerator according to claim 1, characterized in that: A door body (20) is provided on the front of the drawer (2).

3. The door closing and locking mechanism of a drawer-type vehicle refrigerator according to claim 2, characterized in that: The top of the second locking hook (31) is in a ramp shape.

4. The door closing and locking mechanism of a drawer-type vehicle-mounted refrigerator according to claim 3, characterized in that: A protective shell (35) is provided on the side of the refrigerator cabinet (1), and the electric telescopic cylinder (34) is arranged in the protective shell (35).

5. The closing and locking mechanism of a drawer-type in-vehicle refrigerator according to claim 4, characterized in that: A soft rubber pad (36) is provided on the back of the end of the "L"-shaped connecting rod (30) close to the electric telescopic cylinder (34).

Images