Pneumatic drawer vehicle-mounted refrigerator

Abstract

The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a pneumatic drawer vehicle-mounted refrigerator which comprises a main body, a drawer is movably connected in the main body, an air cylinder is arranged in the main body, and one end of the air cylinder communicates with an air pump; the drawer is provided with a connecting column matched with the air cylinder, the connecting column is inserted into the air cylinder from the other end of the air cylinder, and the connecting column and the air cylinder are dynamically sealed. The drawer slides back and forth in the main body through air suction and deflation of the air pump. The air cylinder is arranged in the body, the connecting column is arranged on the drawer, one end of the air cylinder communicates with the air pump, the other end of the air cylinder is in movable sealing connection with the connecting column, opening and closing of the drawer are achieved through air suction and deflation of the air pump, and the structure is simple and feasible.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a pneumatic drawer vehicle-mounted refrigerator. Background Art

[0002] The drawer car refrigerator comprises a fixing seat and a drawer, wherein the drawer is slidably connected to the fixing seat. In order to facilitate users, the existing drawer car refrigerator is generally provided with a mechanical transmission mechanism on the fixing seat, and the mechanical transmission mechanism is electrically connected to a motor, thereby realizing automatic opening of the drawer and improving the user experience.

[0003] For example, the patent with publication number CN117516000A discloses a fully automatic drawer-type vehicle-mounted refrigerator and control unit, in which the drawer automatic drive module includes a shell and a movable platform installed on the top of the shell and capable of sliding laterally, the movable platform being connected to the drawer component, a power element being installed at one end inside the shell, the output end of the power element being connected to a transmission rod laterally arranged inside the shell, a transmission block with a threaded fit being sleeved on the transmission rod, the transmission block being connected to the movable platform, a door lock assembly being installed near the power element at the inner bottom of the shell, the door lock assembly cooperates with the transmission rod to keep the drawer component in a position retracted inside the refrigerator body.

[0004] For another example, the patent with publication number CN118602679A discloses a car refrigerator with a self-priming function, comprising: a fixed seat; a drawer, which is slidably arranged on the fixed seat and has a closed position, a self-priming position and a maximum expanded position; a self-priming unit, which is arranged on the fixed seat and has a track groove and a sliding block, the track groove has a straight section and a bending section, one end of the sliding block is movably inserted in the straight section and movably engaged with the bending section, and the other end is movably engaged with the drawer; the sliding block can be disengaged from the drawer because one end of the sliding block inserted in the track groove moves from the straight section to the bending section, and can be restored to the engagement with the drawer because the drawer moves from the maximum expanded position to the self-priming position, so as to drive the drawer to move from the self-priming position to the closed position; a first driving unit, which is arranged on one side of the fixed seat, is used to drive the drawer to be disengaged from the sliding block; a second driving unit, which is arranged on the fixed seat, is used to drive the drawer to move to the maximum expanded position.

[0005] The above technologies all use a mechanical transmission structure to automatically open and close the drawer, but this mechanical transmission structure is relatively complex, and another method is urgently needed to simplify the setting of the transmission structure. Summary of the invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to provide a drawer-type vehicle refrigerator with a simple and feasible structure.

[0007] The technical solution adopted by the present invention to solve the problem is: a pneumatic drawer car refrigerator, including a main body, a drawer movably connected to the main body, a cylinder is arranged in the main body, the cylinder is tubular and arranged in the front-to-back direction, one end of the cylinder is connected to an air pump; the drawer is provided with a connecting column adapted to the cylinder, the connecting column is inserted into the cylinder from the other end of the cylinder, and the connecting column is dynamically sealed with the cylinder; the drawer slides back and forth in the main body through the suction and discharge of the air pump.

[0008] As a further improvement of the above technical solution, the main body includes a first fixed seat, and the drawer is connected to the top of the first fixed seat in a front-rear sliding manner.

[0009] As a further improvement of the above technical solution, the drawer has a maximum expansion position, a transition position and a fully closed position in its travel on the first fixed seat; the travel of the drawer between the fully closed position and the transition position is controlled by an air pump, and the travel of the drawer between the transition position and the maximum expansion position is controlled manually.

[0010] As a further improvement of the above technical solution, a limit block is arranged at the bottom of the drawer, and a stop buffer is installed on the first fixed seat. When the drawer slides to the maximum expanded position, the limit block abuts against the stop buffer.

[0011] As a further improvement of the above technical solution, a pressure sensor is provided in the air pump, the pressure sensor is communicatively connected with the air pump, and the pressure sensor is used to identify the air pressure in the cylinder.

[0012] As a further improvement of the above technical solution, a damping roller is installed on the first fixing seat, and the damping roller abuts against the bottom of the drawer.

[0013] As a further improvement of the above technical solution, the air cylinder and the air pump are both arranged on the first fixing seat, and the connecting column is arranged at the bottom of the drawer.

[0014] As a further improvement of the above technical solution, it also includes a second fixing seat, which is located at the rear of the drawer, the cylinder is arranged on the second fixing seat, and the connecting column is arranged on the rear side of the drawer.

[0015] As a further improvement of the above technical solution, the connecting column includes a column and a piston, one end of the column is fixedly connected to the drawer, the piston is fixedly connected to the other end of the column, and the connecting column is dynamically sealed with the cylinder through the piston.

[0016] As a further improvement of the above technical solution, the distance between the fully closed position and the transition position is 55-65 mm.

[0017] The beneficial effects of the present invention are as follows: a cylinder is arranged in the main body, a connecting column is arranged on the drawer, one end of the cylinder is connected to the air pump, and the other end of the cylinder is dynamically sealed and connected to the connecting column. The drawer is opened and closed by the suction and deflation of the air pump, and the structure is simple and feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural schematic diagram of the first fixing seat of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the bottom of the drawer of the present invention;

[0021] Figure 3 It is a structural cross-sectional view of the drawer of the present invention when it is in a fully closed position;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 5 It is a structural cross-sectional view of the drawer of the present invention when it is located at a transition position;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure enlarged at B in the middle;

[0025] Figure 7 It is a structural cross-sectional view of the drawer of the present invention when it is in the maximum extended position;

[0026] Figure 8 for Figure 7 A schematic diagram of the structure enlarged at C in the middle;

[0027] Fig. 9 This is a schematic diagram of a structure in which the cylinder is arranged on the second fixing seat and the connecting column is arranged on the rear side of the drawer;

[0028] In the figure: 1-first fixed seat, 11-cylinder, 12-air pump, 13-stop buffer, 14-damping roller, 2-drawer, 21-connecting column, 211-column, 2111-spherical head, 212-piston, 22-limiting block, 3-second fixed seat. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 8 A pneumatic drawer vehicle refrigerator comprises a main body and a drawer 2 movably connected in the main body, the main body comprises a first fixed seat 1, a cylinder 11 is arranged on the first fixed seat 1, the cylinder 11 is in the shape of a long tube, the length direction of the cylinder 11 is parallel to the front-to-back direction, and one end of the cylinder 11 is connected to an air pump 12; a connecting column 21 adapted to the cylinder 11 is arranged at the bottom of the drawer 2, the connecting column 21 is arranged in the front-to-back direction, the connecting column 21 is inserted into the cylinder 11 from the other end of the cylinder 11, and the connecting column 21 is dynamically sealed with the cylinder 11; the drawer 2 slides back and forth on the first fixed seat 1 through the suction and discharge of the air pump 12, thereby realizing the opening and closing of the drawer 2, and realizing the opening and closing of the drawer 2 through the pneumatic structure, thereby simplifying the traditional mechanical transmission structure.

[0034] like Fig. 9 As shown, in other possible embodiments, the main body may further include a second fixing seat 3, which is located at the rear of the drawer 2 (inside the main body), the position of the cylinder 11 is replaced on the second fixing seat 3, and the setting position of the connecting column 21 is replaced on the rear side of the drawer 2. It is understood that when the cylinder 11 and the connecting column 21 are set on the rear side, the "rear side" referred to here should be understood as any height position on the rear side, which can be but is not limited to the upper, middle and lower parts of the rear side.

[0035] In a preferred embodiment, the connecting column 21 includes a column 211 and a piston 212, one end of the column 211 is fixedly connected to the drawer 2, and the piston 212 is fixedly connected to the other end of the column 211. The end of the connecting column 21 containing the piston 212 is inserted into the cylinder 11 and dynamically sealed with the cylinder 11.

[0036] In some embodiments, the second end of the cylinder 211 is provided with a spherical head 2111 , and the piston 212 is provided with a spherical hole, and the spherical head 2111 is detachably connected in the spherical hole.

[0037] In other embodiments, the above-mentioned mechanism can be applied to a semi-automatic (or semi-driven) drawer-type vehicle refrigerator, specifically as follows: the drawer 2 has a maximum expansion position, a transition position and a fully closed position in its travel on the first fixed seat 1 (or in the main body), the section from the fully closed position to the transition position is an air pump driven section, and the maximum expansion position and the transition position are manual drive sections; the travel of the drawer 2 between the fully closed position and the transition position is controlled by the air pump 12, and the travel of the drawer 2 between the transition position and the maximum expansion position is manually controlled.

[0038] In a preferred embodiment, a limit block 22 is provided at the bottom of the drawer 2, and a stop buffer 13 is installed on the first fixed seat 1. When the drawer 2 slides to the maximum expanded position, the limit block 22 abuts against the stop buffer 13. The stop buffer 13 is used to limit the maximum expanded position of the drawer 2 and reduce the wear of internal parts.

[0039] In a preferred embodiment, there are two limit blocks 22 , and the two limit blocks 22 are symmetrically distributed at the bottom of the drawer 2 , thereby preventing the drawer 2 from shifting left or right.

[0040] In a preferred embodiment, a damping roller 14 is further installed on the first fixing seat 1, and the damping roller 14 abuts against the bottom of the drawer 2, thereby providing a comfortable feel in the manual section and improving the user experience.

[0041] In a preferred embodiment, a pressure sensor is provided in the air pump 12, and the pressure sensor is communicatively connected with the air pump 12. The pressure sensor is used to identify the air pressure in the cylinder 11. When the drawer 2 slides from the maximum expansion position to the transition position, the front end of the connecting portion (including one end of the piston 212) is partially inserted into the cylinder 11. At this time, the air pressure in the cylinder 11 increases, and the pressure sensor senses and feeds back to the air pump 12. The air pump 12 starts to exhaust air, and the drawer 2 slides toward the fully closed position under the action of negative pressure until the drawer 2 is completely closed.

[0042] In other possible embodiments, the above-mentioned pressure sensor can also be replaced by a position sensor, which is communicatively connected to the air pump 12. The position sensor is used to identify the position of the drawer 2. When the drawer 2 is in a transition position, the position sensor senses and feeds back to the air pump 12. The air pump 12 starts to pump air, and the drawer 2 slides toward the fully closed position under the action of negative pressure until the drawer 2 is fully closed.

[0043] Specifically, compared with the position sensor solution, the pressure sensor solution is preferred. The pressure sensor in the pressure sensor solution is integrated into the pump, has a simple layout, and has a relatively low cost.

[0044] In a preferred embodiment, the distance between the fully closed position and the transition position is 55-65 mm, and further preferably, 60 mm.

[0045] In some embodiments, a control button is further included. The control knob is disposed on the vehicle refrigerator. The control button is electrically connected to the air pump 12 and controls the air pump 12 .

[0046] Further, see Figure 3 , Figure 5 and Figure 7 The door opening and closing principle of the semi-automatic (semi-driven) drawer-type vehicle refrigerator is as follows:

[0047] Door opening principle: press the control button, the air pump 12 is deflated, the air pressure in the cylinder 11 pushes the connecting column 21 away from the air pump 12, the drawer 2 slides forward and opens until the transition position, when the drawer 2 is in the transition position, the drawer 2 can be manually pulled to the maximum expansion position.

[0048] Door closing principle: push the drawer 2 to the transition position, at this time, one end of the connecting column 21 including the piston 212 is partially inserted into the cylinder 11, the air pressure in the cylinder 11 rises, the pressure sensor recognizes and controls the air pump 12 to evacuate air, and the drawer 2 slides backward and gradually closes until it is in a fully closed position.

[0049] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pneumatic drawer vehicle refrigerator, comprising a main body, wherein a drawer (2) is movably connected to the main body, characterized in that: A cylinder (11) is arranged in the main body, the cylinder (11) is tubular and arranged in the front-to-back direction, and one end of the cylinder (11) is connected to an air pump (12); The drawer (2) is provided with a connecting column (21) adapted to the cylinder (11), the connecting column (21) is inserted into the cylinder (11) from the other end of the cylinder (11), and the connecting column (21) is dynamically sealed with the cylinder (11); The drawer (2) slides back and forth in the main body through the suction and discharge of air by the air pump (12).

2. The pneumatic drawer vehicle refrigerator according to claim 1, characterized in that: The main body comprises a first fixing seat (1), and the drawer (2) is connected to the top of the first fixing seat (1) in a forward and backward sliding manner.

3. The pneumatic drawer vehicle refrigerator according to claim 2, characterized in that: The drawer (2) has a maximum unfolded position, a transitional position and a completely closed position in its travel on the first fixed seat (1); The travel of the drawer (2) between the fully closed position and the transition position is controlled by an air pump (12), and the travel of the drawer (2) between the transition position and the maximum unfolded position is controlled manually.

4. The pneumatic drawer vehicle refrigerator according to claim 3, characterized in that: A limit block (22) is provided at the bottom of the drawer (2), and a stop buffer (13) is installed on the first fixed seat (1); when the drawer (2) slides to the maximum unfolded position, the limit block (22) abuts against the stop buffer (13).

5. The pneumatic drawer vehicle refrigerator according to claim 1, characterized in that: A pressure sensor is arranged in the air pump (12), the pressure sensor is communicatively connected to the air pump (12), and the pressure sensor is used to identify the air pressure in the cylinder (11).

6. The pneumatic drawer vehicle refrigerator according to claim 3, characterized in that: A damping roller (14) is mounted on the first fixing seat (1), and the damping roller (14) abuts against the bottom of the drawer (2).

7. The pneumatic drawer vehicle refrigerator according to claim 2, characterized in that: The cylinder (11) and the air pump (12) are both arranged on the first fixing seat (1), and the connecting column (21) is arranged at the bottom of the drawer (2).

8. The pneumatic drawer vehicle refrigerator according to claim 2, characterized in that: It also comprises a second fixing seat (3), wherein the second fixing seat (3) is located at the rear of the drawer (2), the cylinder (11) is arranged on the second fixing seat (3), and the connecting column (21) is arranged at the rear side of the drawer (2).

9. The pneumatic drawer vehicle refrigerator according to claim 1, characterized in that: The connecting column (21) comprises a column (211) and a piston (212); one end of the column (211) is fixedly connected to the drawer (2); the piston (212) is fixedly connected to the other end of the column (211); and the connecting column (21) is dynamically sealed with the cylinder (11) via the piston (212).

10. The pneumatic drawer vehicle refrigerator according to claim 3, characterized in that: The distance between the fully closed position and the transition position is 55-65 mm.

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