Vehicle-mounted semiconductor refrigerator

Abstract

The invention relates to the technical field of semiconductor refrigerators, and discloses a vehicle-mounted semiconductor refrigerator which comprises a shell and a drawer box, and the shell comprises an inner shell and an outer shell; a semiconductor refrigeration assembly and a central control assembly are installed on the shell, a lower air duct and a rear air duct are arranged on the shell, the lower air duct communicates with the rear air duct, and an air outlet is formed in the upper portion of the front side of the shell and communicates with the rear air duct; a return air inlet is formed in the lower part of the rear side and communicated with the lower air duct; an inner fan is installed at the air return opening of the shell, and a plurality of air circulation holes are formed in the two sides of the storage drawer. The return air inlet is formed in the lower portion of the rear side of the refrigerator, the air outlet is formed in the upper portion of the front side of the refrigerator, and meanwhile the air circulation holes are formed in the two sides of the storage drawer, so that the problems of uneven refrigeration temperature, low temperature at the air inlet and high temperature away from the air inlet in an existing design in the market are solved, and the effects of higher cooling rate and higher cooling efficiency are achieved. And the cooling effect in the refrigerator is more uniform.

Description

Technical Field

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

[0002] With the progress of the times and the development of science and technology, cars are no longer just a means of transportation. They have become more intelligent and technological, with more usage scenarios and more functions. Especially with the rise of electric vehicles (EV) and smart cars, the demand for vehicle-mounted equipment has gradually increased. As one of the common accessories, car refrigerators provide convenient food and drink storage functions, which greatly improves the user experience of car owners, especially in long-distance travel and high-temperature environments.

[0003] Semiconductor refrigerators use semiconductor refrigeration technology, based on the thermoelectric effect, to achieve the purpose of refrigeration by generating a hot and cold effect when current flows through semiconductor materials. This technology is not only small in size, high in energy efficiency, and low in noise, but also can provide a stable refrigeration effect without taking up too much space in the car. However, existing semiconductor refrigerators have slow refrigeration speed and uneven refrigeration. Objects near the refrigeration plate cool down quickly, while objects far away from the refrigeration plate cool down slowly, which cannot better meet the needs of passengers. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle-mounted semiconductor refrigerator, which solves the problems of uneven refrigeration temperature, low temperature at the air outlet and high temperature far away from the air outlet in existing designs on the market.

[0005] The present invention is realized by the following technical scheme: a vehicle-mounted semiconductor refrigerator, comprising a shell, a drawer box, the drawer box is slidably connected to the shell, the shell comprises an inner shell and an outer shell, the inner shell is sealed and installed on the outer shell; a semiconductor refrigeration component and a central control component are installed on the shell, the drawer box comprises a storage drawer and a drawer decorative plate, the drawer decorative plate is snap-connected to the storage drawer; a downwind duct and a rear duct are arranged on the shell, the downwind duct is connected to the rear duct, and the semiconductor refrigeration component is installed in the connection between the downwind duct and the rear duct An air outlet is arranged on the upper front part of the shell body, which is connected with the rear air duct; an air return outlet is arranged on the lower rear part, which is connected with the lower air duct; an internal fan is installed on the shell body at the return air outlet, and a plurality of air circulation holes are arranged on both sides of the storage drawer; when the internal fan is started, the air flow is blown into the shell body through the rear air duct and the air outlet, and the items in the storage drawer are evenly cooled, and then flow through the air circulation holes, the return air outlet and the lower air duct in turn to the semiconductor refrigeration component for cooling, and the cooled air flow continues to be blown into the shell body through the rear air duct to form a cycle.

[0006] In order to better realize the present invention, further, the semiconductor refrigeration component includes a semiconductor refrigeration unit installed on the rear air duct, the semiconductor refrigeration unit is equipped with external fins and internal fins, the internal fins are in the rear air duct, the external fins are equipped with an external fan bracket, and the external fan is installed on the external fan bracket.

[0007] In order to better implement the present invention, further, the central control assembly includes a PCBA lower bracket installed on the shell, and a PCBA upper cover plate and a PCBA controller are installed on the PCBA lower bracket, and the PCBA upper cover plate is used to protect the PCBA controller.

[0008] In order to better realize the present invention, further, the inner shell body includes an inner storage shell, and the return air outlet and the air outlet are arranged on the inner storage shell; the outer shell body includes an outer protective shell, an outer shell cover, and a shell decorative panel, and the outer shell cover, the inner storage shell, and the outer protective shell are connected through the shell decorative panel, and a box foam layer is filled between the inner shell body and the outer shell body, and a box door foam layer is filled between the storage drawer and the drawer decorative panel, and a sealing strip is arranged on the storage drawer.

[0009] In order to better realize the present invention, further, a lighting lamp is installed on the inner storage shell, a reed switch is installed on the shell decorative plate, a magnet is installed on the storage drawer, the reed switch cooperates with the magnet, and the reed switch is connected to the central control component signal.

[0010] In order to better realize the present invention, further, a slide rail bracket is installed on the inner storage shell, a slide rail is installed on the slide rail bracket, one side of the slide rail is connected to the slide rail bracket, and the other side is connected to the storage drawer, a damping gear is installed on the slide rail bracket, and a rack is installed on the storage drawer, and the damping gear matches the rack.

[0011] In order to better implement the present invention, further, a coil spring shaft is installed on the slide rail bracket, a coil spring is installed on the coil spring shaft, the slide rail bracket is slidably connected to a sliding plate and fixedly connected to a fixed plate, the fixed plate is used to limit the sliding plate, and the sliding plate is connected to the other end of the coil spring.

[0012] In order to better realize the present invention, further, a snap assembly is installed on the shell trim panel, which is used to limit the storage drawer to prevent the storage drawer from being opened by mistake; the snap assembly includes a lock tongue shaft, a lock tongue, an electromagnetic lock, and a torsion spring. The lock tongue shaft is installed on the shell trim panel, and a lock tongue and a torsion spring are installed on the lock tongue shaft. The torsion spring cooperates with the lock tongue, and the lock tongue is used to snap the storage drawer; the electromagnetic lock is installed on the outer protective shell, and the output end of the electromagnetic lock is hinged to the lock tongue.

[0013] In order to better realize the present invention, further, the electromagnetic lock includes a telescopic rod, a shock-absorbing rubber, a gear retaining spring, a return spring, a coil, a shock-absorbing ring and a protective shell. The telescopic rod is slidably connected to the protective shell, the coil is arranged around the outer edge of the telescopic rod, and the gear retaining spring, the return spring and the shock-absorbing ring are arranged between the telescopic rod and the protective shell.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) The present invention solves the problem of uneven refrigeration temperature, low temperature at the air outlet and high temperature far from the air outlet in existing designs on the market by arranging the return air outlet at the lower rear part of the refrigerator and the air outlet at the upper front part of the refrigerator, and opening air circulation holes on both sides of the storage drawer, thereby achieving a faster cooling rate and a more uniform cooling effect in the refrigerator; (2) The present invention solves the problem of the existing electric unlocking mechanism on the market, which has many parts, complex coordination, high noise, high cost, and some mechanisms require electric drive to extend and close, which is cumbersome and cannot be unlocked and closed quickly and efficiently, by providing a buckle assembly. The present invention achieves the effects of simplified structure, low noise, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the closed state structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the open state structure of the present invention.

[0017] Figure 3 It is a cross-sectional view of the overall structure of the present invention.

[0018] Figure 4 It is an exploded view of the overall structure of the present invention.

[0019] Figure 5 It is a cross-sectional view of the buckle assembly structure.

[0020] Figure 6 It is a schematic diagram of the structure of the buckle assembly in the closed state.

[0021] Figure 7 This is a schematic diagram of the structure of the snap assembly in the open state.

[0022] Among them: 1-shell cover; 2-light; 3-reed switch; 4-magnet; 5-inner storage shell; 6-shell trim; 7-lock tongue shaft; 8-damping gear; 9-lock tongue; 10-electromagnetic lock; 11-drawer trim; 12-slide rail; 13-sealing strip; 14-storage drawer; 15-insulation board; 16-lower air duct; 17-outer protective shell; 18-inner fan; 19-slide rail bracket; 20-torsion spring; 21-coil spring; 22-sliding plate; 23-fixed plate; 24-coil spring shaft; 2 5-external fan; 26-external fan bracket; 27-external fin; 28-semiconductor refrigeration unit; 29-inner fin; 30-rear air duct; 31-PCBA upper cover; 32-PCBA controller; 33-PCBA lower bracket; 34-box foaming layer; 35-box door foaming layer; 36-air circulation hole; 37-return air outlet; 38-air outlet; 101-telescopic rod; 102-shock-absorbing rubber; 103-gear retaining spring; 104-reset spring; 105-coil; 106-shock-absorbing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1: This embodiment provides a vehicle-mounted semiconductor refrigerator. Figure 1-Figure 4As shown, it includes a shell and a drawer box, the drawer box is slidably connected to the shell, the shell includes an inner shell and an outer shell, the inner shell is sealed and installed on the outer shell; a semiconductor refrigeration component and a central control component are installed on the shell, the drawer box includes a storage drawer 14 and a drawer decorative plate 11, the drawer decorative plate 11 is snapped on the storage drawer 14; a downwind duct 16 and a rear duct 30 are provided on the shell, the downwind duct 16 is connected to the rear duct 30, the semiconductor refrigeration component is installed at the connection between the downwind duct 16 and the rear duct 30, an air outlet 38 is provided on the upper front side of the shell, which is connected to the rear duct 30; a return air outlet 37 is provided on the lower rear side, which is connected to the downwind duct 16; a heat preservation plate 15 and an internal fan 18 are installed on the shell at the return air outlet 37, the heat preservation plate 15 is used to provide heat preservation for the internal fan 18, and a plurality of air circulation holes 36 are provided on both sides of the storage drawer 14.

[0026] When the semiconductor refrigeration component is working, the internal fan 18 is started, and the air flows to the cooling end of the semiconductor refrigeration component for cooling. The cooled air flows into the shell from the air outlet 38 through the rear air duct 30, and evenly cools the items in the storage drawer 14. Then, it leaves the storage drawer 14 through the air circulation hole 36, and then returns to the cooling end of the semiconductor refrigeration component through the return air port 37 and the lower air duct 16 for cooling, forming a cycle.

[0027] Through CFD fluid analysis and thermal simulation analysis, the return air vent 37 of the air circulation system in the refrigerator is arranged at the lower rear part of the refrigerator, and the air outlet 38 is arranged at the upper front part of the refrigerator. At the same time, air circulation holes 36 are opened on both sides of the storage drawer 14, so that the return air vent 37 can quickly suck away the air inside the storage drawer 14 to cool it down, and then blow it into the refrigerator through the air outlet 38. Compared with the existing design in the market where the air outlet 38 is located below the return air vent 37, this design has a faster cooling rate and more uniform cooling in the refrigerator, avoiding the defects of the existing design in the market, such as uneven cooling temperature, low temperature at the air outlet, and high temperature far away from the air outlet.

[0028] Embodiment 2: This embodiment further expands the semiconductor refrigeration component based on the above embodiment. Figure 4 As shown, the semiconductor refrigeration assembly includes a semiconductor refrigeration unit 28 installed on the rear air duct 30, and the semiconductor refrigeration unit 28 is installed with external fins 27 and internal fins 29, the internal fins 29 are located in the rear air duct 30, and the external fins 27 are installed with an external fan bracket 26, and the external fan bracket 26 is installed with an external fan 25.

[0029] After the semiconductor refrigeration unit 28 is powered on, the side close to the inner fin 29 starts cooling, and the side close to the outer fin 27 starts heating. The airflow circulating in the refrigerator blows on the inner fin 29 to cool it down, and the external fan 25 blows on the outer fin 27 to dissipate heat. If the power is reversed, the semiconductor refrigeration component can provide a heat source for the refrigerator. The working principle of the semiconductor refrigeration unit 28 is common knowledge that can be easily understood and applied by those skilled in the art, so it will not be repeated.

[0030] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0031] Embodiment 3: This embodiment further expands the central control component based on the above embodiment. Figure 4 As shown, the central control assembly includes a PCBA lower bracket 33 installed on the shell, and a PCBA upper cover plate 31 and a PCBA controller 32 are installed on the PCBA lower bracket 33 . The PCBA upper cover plate 31 is used to protect the PCBA controller 32 .

[0032] The PCBA controller 32 serves as a controller of the refrigerator assembly, controlling refrigerator refrigeration, cooling, motor unlocking, lamp on / off, etc. The specific working control principle is common sense that can be easily understood and applied by those skilled in the art, so it will not be described in detail.

[0033] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0034] Embodiment 4: This embodiment further expands the housing on the basis of the above embodiment. Figure 4 As shown, the inner shell includes an inner storage shell 5, and the return air port 37 and the air outlet 38 are arranged on the inner storage shell 5; the outer shell includes an outer protective shell 17, an outer shell cover 1, and a shell trim 6. The outer shell cover 1, the inner storage shell 5, and the outer protective shell 17 are connected through the shell trim 6. A box foam layer 34 is filled between the inner shell and the outer shell, and a box door foam layer 35 is filled between the storage drawer 14 and the drawer trim 11. A sealing strip 13 is provided on the storage drawer 14.

[0035] The shell decorative plate 6 is used as an intermediate component to connect the outer shell cover 1, the outer protective shell 17, and the inner storage shell 5 for easy disassembly and assembly. The box body foam layer 34, the box door foam layer 35, and the sealing strip 13 reduce the heat entering the refrigerator and improve its insulation effect.

[0036] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0037] Embodiment 5: This embodiment is further expanded on the basis of Embodiment 4. Figure 4 As shown, a lighting lamp 2 is installed on the inner storage shell 5, a reed switch 3 is installed on the shell trim 6, and a magnet 4 is installed on the storage drawer 14. The reed switch 3 cooperates with the magnet 4, and the reed switch 3 is connected to the central control component signal.

[0038] When the storage drawer 14 is closed, the magnet 4 approaches the reed switch 3, and the reed switch 3 is connected under the action of the magnetic field, sending a connection signal to the PCBA controller 32, and the PCBA controller 32 controls the lighting lamp 2 to be turned off; when the storage drawer 14 is opened, the magnet 4 moves away from the reed switch 3, and the reed switch 3 is disconnected. After receiving the disconnection signal, the PCBA controller 32 turns on the lighting lamp 2; when the storage drawer 14 is opened for a long time, the PCBA controller 32 sends an alarm signal to remind the user that the storage drawer 14 is forgotten to be closed.

[0039] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0040] Embodiment 6: This embodiment is further expanded on the basis of Embodiment 4. Figure 4 As shown, a slide rail bracket 19 is installed on the inner storage shell 5, and a slide rail 12 is installed on the slide rail bracket 19. One side of the slide rail 12 is connected to the slide rail bracket 19, and the other side is connected to the storage drawer 14. A damping gear 8 is installed on the slide rail bracket 19, and a rack is installed on the storage drawer 14. The damping gear 8 matches the rack.

[0041] By providing the slide rail 12, the storage drawer 14 can be pulled out more smoothly and with less effort; and the damping gear 8 is provided to provide damping for the opening and closing of the storage drawer 14, thereby improving the operating feel.

[0042] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0043] Embodiment 7: This embodiment is further expanded on the basis of Embodiment 6. Figure 4 As shown, a coil spring shaft 24 is installed on the slide rail bracket 19, and a coil spring 21 is installed on the coil spring shaft 24. The slide rail bracket 19 is slidably connected to a sliding plate 22 and fixedly connected to a fixed plate 23. The fixed plate 23 is used to limit the sliding plate 22. The sliding plate 22 is connected to the other end of the coil spring 21.

[0044] When opening the refrigerator, after the storage drawer 14 is unlocked, the sliding plate 22 slides on the slide rail bracket 19 under the elastic force of the coil spring 21, and the fixed plate 23 is used to limit the sliding plate 22 to prevent the storage drawer 14 from being pulled out excessively, that is, the coil spring 21 automatically opens the storage drawer 14; when the person is ready to close the storage drawer 14, the coil spring 21 is stretched and the sliding plate 22 is reset.

[0045] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0046] Embodiment 8: This embodiment is further expanded on the basis of the above-mentioned embodiment 7. Figure 6-Figure 7 As shown, a snap assembly is installed on the shell trim 6, which is used to limit the storage drawer 14 to prevent the storage drawer 14 from being opened by mistake; the snap assembly includes a lock tongue shaft 7, a lock tongue 9, an electromagnetic lock 10, and a torsion spring 20, the lock tongue shaft 7 is installed on the shell trim 6, the lock tongue shaft 7 is equipped with a lock tongue 9 and a torsion spring 20, the torsion spring 20 cooperates with the lock tongue 9, and the lock tongue 9 is used to snap the storage drawer 14; the electromagnetic lock 10 is installed on the outer protective shell 17, and the output end of the electromagnetic lock 10 is hinged to the lock tongue 9.

[0047] When the storage drawer 14 needs to be opened, the electromagnetic lock 10 receives the signal from the central control component and starts, pulling the lock tongue 9 so that the lock tongue 9 overcomes the elastic force of the torsion spring 20 and rotates. At this time, the lock tongue 9 no longer locks the storage drawer 14, and the storage drawer 14 automatically pops out under the action of the coil spring 21; when the storage drawer 14 needs to be locked, the electromagnetic lock 10 does not take any action. When the storage drawer 14 is closed under the push of the staff, the storage drawer 14 squeezes the inclined surface on the lock tongue 9, forcing the lock tongue 9 to overcome the elastic force of the torsion spring 20 and give way. After the storage drawer 14 passes over the lock tongue 9, the lock tongue 9 locks the storage drawer 14 under the elastic force of the torsion spring 20, thereby completing the limitation of the storage drawer 14.

[0048] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0049] Embodiment 9: This embodiment further expands the electromagnetic lock 10 on the basis of Embodiment 8. Figure 5 As shown, the electromagnetic lock 10 includes a telescopic rod 101, a shock-absorbing rubber 102, a gear retaining spring 103, a return spring 104, a coil 105, a shock-absorbing ring 106 and a protective shell. The telescopic rod 101 is slidably connected to the protective shell, the coil 105 is arranged around the outer edge of the telescopic rod 101, and the gear retaining spring 103, the return spring 104, and the shock-absorbing ring 106 are arranged between the telescopic rod 101 and the protective shell.

[0050] When the coil 105 is energized, the coil 105 generates a magnetic field, at which time the telescopic rod 101 is adsorbed so that it pulls the lock tongue 9, thereby unlocking the buckle assembly; when the coil 105 is de-energized, the magnetic field disappears, at which time the lock tongue 9 is reset by the force of the torsion spring 20, and at the same time the telescopic rod 101 is reset by the elastic force of the reset spring 104, thereby locking the buckle assembly, and the shock absorbing ring 106 provides a buffering force to prevent the telescopic rod 101 from colliding and making abnormal noises; the gear retaining spring 103 provides a limit to limit the ejection stroke of the telescopic rod 101.

[0051] It solves the problems of the existing electric unlocking mechanisms on the market, which have many parts, complex coordination, high noise, high cost, and some mechanisms require electric drive to extend and retract, electric drive to close, etc., which are cumbersome to drive and cannot achieve unlocking and closing quickly and efficiently.

[0052] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A vehicle-mounted semiconductor refrigerator, comprising a housing and a drawer box, wherein the drawer box is slidably connected to the housing, wherein the housing comprises an inner housing and an outer housing, wherein the inner housing is sealedly mounted on the outer housing; a semiconductor refrigeration component and a central control component are mounted on the housing, wherein: The drawer box comprises a storage drawer (14) and a drawer decorative plate (11), wherein the drawer decorative plate (11) is snap-connected to the storage drawer (14); a downwind duct (16) and a rear wind duct (30) are arranged on the shell body, wherein the downwind duct (16) and the rear wind duct (30) are connected, and a semiconductor refrigeration component is installed at the connection between the downwind duct (16) and the rear wind duct (30); an air outlet (38) is arranged on the upper front side of the shell body, which is connected to the rear wind duct (30); and a return air outlet (37) is arranged on the lower rear side, which is connected to the downwind duct (16); An internal fan (18) is installed at the return air port (37) on the shell, and a plurality of air circulation holes (36) are arranged on both sides of the storage drawer (14); when the internal fan (18) is started, air is blown into the shell through the rear air duct (30) and the air outlet (38), thereby evenly cooling the items in the storage drawer (14), and then flows to the semiconductor refrigeration component through the air circulation holes (36), the return air port (37), and the lower air duct (16) in sequence for cooling. The cooled air flow continues to be blown into the shell through the rear air duct (30), thereby forming a cycle.

2. A vehicle-mounted semiconductor refrigerator according to claim 1, characterized in that: The semiconductor refrigeration assembly comprises a semiconductor refrigeration unit (28) mounted on a rear air duct (30); an outer fin (27) and an inner fin (29) are mounted on the semiconductor refrigeration unit (28); the inner fin (29) is located in the rear air duct (30); an outer fan bracket (26) is mounted on the outer fin (27); and an outer fan (25) is mounted on the outer fan bracket (26).

3. The vehicle-mounted semiconductor refrigerator according to claim 1, characterized in that: The central control assembly comprises a PCBA lower bracket (33) mounted on the housing, a PCBA upper cover plate (31) and a PCBA controller (32) being mounted on the PCBA lower bracket (33), and the PCBA upper cover plate (31) is used to protect the PCBA controller (32).

4. The vehicle-mounted semiconductor refrigerator according to claim 1, characterized in that: The inner shell comprises an inner storage shell (5), and the return air port (37) and the air outlet (38) are arranged on the inner storage shell (5); the outer shell comprises an outer protective shell (17), an outer shell cover (1), and a shell decorative plate (6); the outer shell cover (1), the inner storage shell (5), and the outer protective shell (17) are connected via the shell decorative plate (6); a box foam layer (34) is filled between the inner shell and the outer shell, a box door foam layer (35) is filled between the storage drawer (14) and the drawer decorative plate (11), and a sealing strip (13) is arranged on the storage drawer (14).

5. The vehicle-mounted semiconductor refrigerator according to claim 4, characterized in that: The inner storage shell (5) is provided with an illumination lamp (2), the shell decorative panel (6) is provided with a reed switch (3), the storage drawer (14) is provided with a magnet (4), the reed switch (3) cooperates with the magnet (4), and the reed switch (3) is connected to a central control component signal.

6. The vehicle-mounted semiconductor refrigerator according to claim 4, characterized in that: A slide rail bracket (19) is mounted on the inner storage shell (5), a slide rail (12) is mounted on the slide rail bracket (19), one side of the slide rail (12) is connected to the slide rail bracket (19), and the other side is connected to the storage drawer (14), a damping gear (8) is mounted on the slide rail bracket (19), a rack is mounted on the storage drawer (14), and the damping gear (8) matches the rack.

7. The vehicle-mounted semiconductor refrigerator according to claim 6, characterized in that: A coil spring shaft (24) is mounted on the slide rail bracket (19), a coil spring (21) is mounted on the coil spring shaft (24), a slide plate (22) is slidably connected to the slide rail bracket (19), and a fixed plate (23) is fixedly connected to the slide rail bracket (19), the fixed plate (23) is used to limit the position of the slide plate (22), and the slide plate (22) is connected to the other end of the coil spring (21).

8. The vehicle-mounted semiconductor refrigerator according to claim 7, characterized in that: A buckle assembly is mounted on the shell decorative plate (6) and is used to limit the storage drawer (14) to prevent the storage drawer (14) from being opened by mistake; the buckle assembly comprises a lock tongue rotating shaft (7), a lock tongue (9), an electromagnetic lock (10), and a torsion spring (20); the lock tongue rotating shaft (7) is mounted on the shell decorative plate (6); a lock tongue (9) and a torsion spring (20) are mounted on the lock tongue rotating shaft (7); the torsion spring (20) cooperates with the lock tongue (9); the lock tongue (9) is used to buckle the storage drawer (14); the electromagnetic lock (10) is mounted on the outer protective shell (17); an output end of the electromagnetic lock (10) is hinged to the lock tongue (9).

9. The vehicle-mounted semiconductor refrigerator according to claim 8, characterized in that: The electromagnetic lock (10) comprises a telescopic rod (101), a shock-absorbing rubber (102), a gear retaining spring (103), a return spring (104), a coil (105), a shock-absorbing ring (106) and a protective shell; the telescopic rod (101) is slidably connected to the protective shell; the coil (105) is arranged around the outer edge of the telescopic rod (101); and the gear retaining spring (103), the return spring (104) and the shock-absorbing ring (106) are arranged between the telescopic rod (101) and the protective shell.

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