A vehicle-mounted refrigerator having a rope-driven drawer

Abstract

This application provides a vehicle refrigerator with a rope-driven drawer, relating to the field of vehicle refrigerator technology. The vehicle refrigerator includes a refrigerator body with a hollow interior forming a refrigerator chamber. An opening communicating with the refrigerator chamber is provided on one side of the refrigerator body. A drive structure is located at the rear of the refrigerator body. A fixed pulley is connected to the bottom wall of the refrigerator chamber near the opening. The drawer passes through the opening and is slidably connected to the refrigerator chamber. A movable pulley is located at the bottom of the drawer away from its pull-out side. The first end of the rope structure is elastically connected to the bottom of the refrigerator chamber away from the opening, and the second end passes through the movable pulley, the drive unit of the drive structure, the fixed pulley, and the movable pulley before connecting to the bottom wall of the refrigerator chamber near the opening. When the drive structure drives its drive unit to rotate, the rope structure's extension and retraction states are switched, causing the movable pulley to move, thereby controlling the opening and closing of the drawer. This design replaces the space-consuming drive arrangement in traditional drawer-type vehicle refrigerators, effectively reducing the overall volume of the vehicle refrigerator.

Description

Technical Field

[0001] This application generally relates to the field of vehicle refrigerator technology, and specifically to a vehicle refrigerator with a rope-driven drawer. Background Technology

[0002] As consumers increasingly demand greater driving comfort, more and more car models are equipped with in-car refrigerators, typically located in the armrest area. Passengers can access items that need freezing from above. To make it easier for rear passengers to use the refrigerator, drawer-type refrigerators have emerged. These refrigerators feature drawers that are secured inside the refrigerator via sliding rails, allowing the drawers to be pulled out or retracted for easy access by rear passengers. Later, to further improve the usability of drawer-type refrigerators, fully automatic drawer-type refrigerators were developed. These refrigerators require the sliding rails to be fixed to the drawer for smooth operation.

[0003] However, these fully automatic drawer-type car refrigerators require the installation of ropes and drive motors, which occupy most of the space at the rear of the refrigerator body, resulting in a large overall size of the car refrigerator, which is not conducive to its placement in the vehicle and reduces the storage space of the car refrigerator. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a vehicle refrigerator with a rope-driven drawer that improves space utilization and pull-out reliability.

[0005] This application provides a vehicle refrigerator with a rope-driven drawer, comprising: The refrigerator body has a hollow interior forming a refrigerator chamber; one side of the refrigerator body has an opening communicating with the refrigerator chamber; a drive structure is located at the rear of the refrigerator body; and a fixed pulley is connected to the bottom wall of the refrigerator chamber near the opening. A drawer extends through the opening and is slidably connected to the refrigerator compartment; a movable pulley is provided at the bottom of the drawer away from its pull-out side; A rope structure, the rope structure including at least a first end and a second end, the first end being elastically connected to a position on the bottom of the refrigerator compartment away from the opening, and the second end being connected to a position on the bottom wall of the refrigerator compartment near the opening after passing through the movable pulley, the driving part of the driving structure, the fixed pulley and the movable pulley; When the drive structure drives its drive unit to rotate, it switches the extension and retraction state of the rope structure, causing the movable pulley to move, thereby controlling the opening and closing of the drawer.

[0006] According to the technical solution provided in this application, the rope structure is a first rope, one end of which is the first end, and the other end is the second end.

[0007] According to the technical solution provided in this application, the rope structure includes: A first rope, one end of which is the first end, and the other end of which is wound around the movable pulley and connected to the drive part of the drive structure; The second rope has one end as the second end, and the other end is connected to the drive part of the drive structure after passing through the movable pulley and the fixed pulley.

[0008] According to the technical solution provided in this application, it also includes a tensioning assembly disposed at the bottom of the refrigerator compartment; The tensioning component includes: Tension the shell, A pressure block is disposed inside the tensioning housing; the end of the rope structure passes through the tensioning housing and is connected to the pressure block; A first elastic element is disposed inside the tensioning housing. One side of the first elastic element abuts against the pressure block, and the other side abuts against the side of the tensioning housing near the opening.

[0009] According to the technical solution provided in this application, it also includes a tensioning assembly disposed at the bottom of the refrigerator compartment; The tensioning component includes: The mounting slot is formed in the bottom wall of the refrigerator compartment and is located near the opening; the opening of the mounting slot is slidably connected to the fixed pulley. The second elastic element is disposed in the mounting groove. One end of the second elastic element is connected to the fixed pulley, and the other end is connected to the inner wall of the mounting groove near the opening.

[0010] According to the technical solution provided in this application, a pulley base is provided on one side of the fixed pulley, and two guide grooves are provided at the opening of the mounting groove along the first direction. The two guide grooves correspond one-to-one and are slidably connected to the two sides of the pulley base; the first direction is perpendicular to the cross-section of the opening.

[0011] According to the technical solution provided in this application, the refrigerator body includes: The refrigerator consists of a shell, a foam layer, and an inner liner arranged sequentially from the outside to the inside, with the interior space of the inner liner forming the refrigerator cavity.

[0012] According to the technical solution provided in this application, the bottom wall of the refrigerator inner liner is further provided with a mounting base, and a sliding structure that can extend along the first direction is provided between the mounting base and the drawer; The sliding structure has a first mounting part and a second mounting part that are slidably connected. The first mounting part is connected to the mounting base, and the second mounting part is connected to the bottom of the drawer.

[0013] According to the technical solution provided in this application, it further includes: two rope sleeves, which sequentially pass through the refrigerator shell, the foam layer and the refrigerator liner, and the edges of the rope sleeves are sealed to the refrigerator shell and the refrigerator liner, and the rope sleeves are used to accommodate the rope structure.

[0014] According to the technical solution provided in this application, the drawer includes: The drawer body and the drawer bottom plate located at the bottom of the drawer body are provided. The drawer bottom plate is provided with a connector, which is connected to the movable pulley.

[0015] As can be seen from the above technical solution, this application has at least the following beneficial effects: This application provides a vehicle refrigerator with a rope-driven drawer, comprising: a refrigerator body, the interior of which is hollow to form a refrigerator chamber; an opening communicating with the refrigerator chamber on one side of the refrigerator body; a drive structure at the rear of the refrigerator body; a fixed pulley connected to the bottom wall of the refrigerator chamber near the opening; a drawer, which passes through the opening and is slidably connected to the refrigerator chamber; a movable pulley at the bottom of the drawer away from its pull-out side; and a rope, the rope structure comprising at least a first end and a second end, the first end being elastically connected to the bottom of the refrigerator chamber away from the opening, and the second end being connected to the bottom wall of the refrigerator chamber near the opening after passing through the movable pulley, the drive part of the drive structure, the fixed pulley, and the movable pulley; when the drive structure drives its drive part to rotate, the rope structure switches between retraction and extension states, causing the movable pulley to move, thereby controlling the opening and closing of the drawer.

[0016] This application uses the hollow interior of the refrigerator body to form a refrigerator cavity as storage space. The sliding connection between the drawer and the refrigerator cavity enables the drawer to be pulled out. A movable pulley located at the bottom of the drawer away from the pull-out side, together with a fixed pulley on the bottom wall of the refrigerator cavity near the opening and a drive structure at the rear of the refrigerator body, forms a multi-stage transmission mode to guide and drive the rope structure. The first end of the rope structure is elastically connected to the bottom of the refrigerator cavity away from the opening, and the second end passes sequentially around the movable pulley, the drive part of the drive structure, the fixed pulley, and the movable pulley before being fixed to the bottom wall of the refrigerator cavity near the opening. In this design, when the drive structure rotates the drive unit, it switches the tension of the rope ends, thereby moving the pulley and ultimately controlling the opening and closing of the drawer. This solution replaces the traditional drive arrangement in drawer-type car refrigerators, significantly saving space at the rear of the refrigerator body, effectively reducing the overall size of the car refrigerator, making it easier to place inside the vehicle, and improving space utilization. At the same time, the elastic connection design of the rope and the stability of the pulley transmission ensure smooth and reliable operation of the drawer during opening and closing, avoiding problems such as jamming and ensuring a good user experience. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of a vehicle refrigerator with a rope-driven drawer.

[0019] Figure 2 This is an assembly diagram of the refrigerator body and drawers.

[0020] Figure 3 This is a structural diagram of the interior of a refrigerator compartment.

[0021] Figure 4 This is a structural diagram of the drawer.

[0022] Figure 5 This is a diagram showing the connection structure between the connector and the movable pulley.

[0023] Figure 6 This is a diagram showing the connection structure between the movable pulley and the rope.

[0024] Figure 7 This is a structural diagram of the rope structure when the drawer is closed.

[0025] Figure 8 This is a structural diagram of the first form of the tensioning component.

[0026] Figure 9 This is a structural diagram of the second form of the tensioning component.

[0027] Figure 10This is a cross-sectional view of the second form of the tensioning component.

[0028] Figure 11 This is an assembly drawing for a rope sleeve.

[0029] Figure 12 This is a diagram illustrating the process of opening a drawer.

[0030] Figure 13 This is a structural diagram of the drawer when it is in the open position.

[0031] Figure 14 This is a schematic diagram of the driving structure.

[0032] Figure 15 This is a structural diagram of the first and second ropes.

[0033] Figure 16 This is an exploded view of the drawer quick-assembly mechanism.

[0034] Figure 17 This is a diagram of the overall structure of the quick-assembly drawer.

[0035] Figure 18 This is a diagram illustrating the process of closing a drawer.

[0036] The diagram shows the following components: 1. Refrigerator body; 2. Fixed pulley; 3. Drawer; 4. Movable pulley; 5. First rope; 6. Tensioning shell; 7. Pressure block; 8. First elastic element; 9. Second elastic element; 10. Pulley base; 11. Guide groove; 12. Refrigerator shell; 13. Foam layer; 14. Refrigerator liner; 15. Mounting base; 16. Sliding structure; 17. Second rope; 18. Rope sleeve; 19. Drive motor; 20. Rotary wheel; 21. Connector; 22. Rivet; 23. Compressor; 24. Condenser; 25. Fan; 26. Rope terminal; 27. Output shaft; 28. Rotary wheel base; 29. ​​Drawer body; 30. Drawer bottom plate; 31. Drawer mounting part; 32. Bottom plate mounting part; 33. Mounting screw; 34. Drawer positioning part; 35. Bottom plate limiting part. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] Example 1 like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a vehicle refrigerator with a rope-driven drawer, comprising: The refrigerator body 1 has a hollow interior forming a refrigerator chamber; one side of the refrigerator body 1 has an opening that communicates with the refrigerator chamber; a drive structure is located at the rear of the refrigerator body 1; a fixed pulley 2 is connected to the bottom wall of the refrigerator chamber near the opening; Drawer 3 has a through-opening and is slidably connected to the refrigerator cavity; drawer 3 has a movable caster 4 at the bottom away from its pull-out side. The rope structure includes at least a first end and a second end. The first end is elastically connected to the bottom of the refrigerator compartment away from the opening. The second end passes through the movable pulley 4, the drive part of the drive structure, the fixed pulley 2, and the movable pulley 4 before being connected to the bottom wall of the refrigerator compartment near the opening. When the drive structure drives its drive unit to rotate, it switches the extension and retraction state of the rope structure, causing the movable pulley 4 to move, thereby controlling the opening and closing of the drawer 3.

[0040] It should be noted that, as Figure 3 As shown, the refrigerator body 1 adopts a three-layer design: outer, middle, and inner. The outer layer is the refrigerator shell 12, which provides external protection. The middle layer is a foam layer 13, which is used for heat insulation and to reduce cold loss. The inner layer is the refrigerator liner 14, which is hollow inside to form a refrigerator chamber, which is the core storage area. Here, the refrigerator liner 14 includes a side wall liner and a back cover liner that are spliced ​​together. The side wall liner is located on the side wall around the opening of the refrigerator chamber, and the back cover liner is located on the side wall corresponding to the opening of the refrigerator chamber.

[0041] like Figure 13 As shown, the refrigerator body 1 has an opening on one side that communicates with the refrigerator cavity, facing the side that the user can operate. The cross-section of the opening matches the cross-section of the drawer 3, and is used to accommodate the drawer 3 entering and exiting the refrigerator cavity through the opening.

[0042] like Figure 1 As shown, the rear of the refrigerator body 1, i.e., the side furthest from the opening, has reserved space for the installation of the drive structure, without occupying the internal storage space of the refrigerator cavity; here, as... Figure 14As shown, the drive structure includes a drive motor 19 and a rotating wheel 20 used in conjunction. The output shaft 27 of the drive motor 19 is directly connected to the rotating wheel 20, and the rotating wheel 20 can rotate synchronously with the rotation of the drive motor 19, forming a power transmission relationship between the two. At the same time, the circumferential sidewall of the rotating wheel 20 is the drive part, used to wind the rope structure, so that the winding and unwinding state of the rope structure switches with the rotation of the rotating wheel 20, thereby realizing the transmission of power to the rope structure. Here, the drive structure also includes a rotating wheel base 28, which is hollow inside to accommodate the rotating wheel 20 and the output shaft 27. The sidewall of the rotating wheel base 28 is also connected to the housing of the drive motor 19, providing a certain degree of support for the drive motor 19.

[0043] Furthermore, the compressor 23, condenser 24, and fan 25 are all located at the rear of the refrigerator body 1. The compressor 23 is used to compress the refrigerant and circulate it within the refrigeration system. The condenser 24 is used to dissipate the heat carried by the refrigerant to the outside of the refrigerator. The fan 25, along with the compressor 23 and condenser 24, belongs to the refrigeration system of the vehicle refrigerator. The three work together functionally. After the compressor 23 compresses the refrigerant, the refrigerant enters the condenser 24 for heat dissipation. The fan 25 actively blows air to accelerate the airflow around the condenser 24, assisting in the heat dissipation process. The fan 25 is electrically connected to the control unit of the vehicle refrigerator's refrigeration system and can be started / stopped synchronously or on demand according to the internal temperature of the refrigerator or the heat dissipation requirements of the condenser 24 to ensure refrigeration efficiency.

[0044] Furthermore, the refrigeration system also includes a dryer filter, a capillary tube, and an evaporator. The dryer filter absorbs moisture from the refrigerant to prevent ice blockage. The capillary tube is used for throttling and pressure reduction. The evaporator allows the refrigerant to absorb heat from the environment and completely evaporate into a gaseous state, thus lowering the ambient temperature. The evaporator can be selected as a direct-cooling, air-cooling, or other method to cool the internal space of the refrigerator liner 14, depending on the actual situation; no specific limitation is made here. The refrigerant flows through the compressor, condenser, dryer filter, capillary tube, evaporator, and compressor to complete one refrigeration cycle.

[0045] like Figure 3 As shown, the fixed pulley 2 is connected to the bottom wall of the refrigerator inner liner 14, and the axis of the fixed pulley 2 is set parallel to the cross-section of the opening. The function of the fixed pulley 2 is to change the transmission direction of the rope structure and provide guidance for the drawer 3 to be pulled out.

[0046] like Figures 2-4As shown, the bottom wall of the refrigerator inner liner 14 is also provided with a mounting base 15. The mounting base 15 and the refrigerator inner liner 14 together form the refrigerator cavity. The fixed pulley 2 is set on the mounting base 15 and connected to the bottom wall of the refrigerator inner liner 14 through the mounting base 15. A sliding structure 16 that can extend along a first direction is provided between the mounting base 15 and the drawer 3. Here, the first direction is the direction of the drawer 3 to be pulled out and moved. The sliding structure 16 has a first mounting part and a second mounting part that are slidably connected. The first mounting part is connected to the mounting base 15, and the second mounting part is connected to the bottom of the drawer 3, so that the drawer 3 can move smoothly relative to the mounting base 15.

[0047] like Figure 4 and Figure 5 As shown, the bottom of drawer 3 is provided with a connector 21. The movable pulley 4 is bolted to the connector 21 or connected by rivets 22, so that the movable pulley 4 can rotate relative to the connector 21. Furthermore, the movable pulley 4 has a double-groove structure, and the rope structure fixed to the front and rear ends of the mounting base 15 passes through the two grooves of the movable pulley 4, effectively preventing the rope segments from getting tangled or stuck together.

[0048] In addition, such as Figure 16 As shown, drawer 3 can be designed as a quick-assembly structure. Specifically, drawer 3 includes a drawer body 29 and a drawer bottom plate 30 located at the bottom of the drawer body 29. The drawer body 29 is used to carry items. The drawer bottom plate 30 is provided with a connector 21. First, the connector 21 on the drawer bottom plate 30 is used to connect with the movable pulley 4. Then, the fixed pulley 2 is connected with the mounting base 15. The rope structure is wound around the movable pulley 4 and the fixed pulley 2. Finally, the drawer body 29 is installed on the drawer bottom plate 30. This not only allows for quick assembly, but also allows for observation of whether the rope structure is detached through the open area of ​​the drawer bottom plate 30.

[0049] Among them, such as Figure 17 As shown, the drawer body 29 is provided with a drawer mounting part 31 and a drawer positioning part 34, and the drawer bottom plate 30 is provided with a bottom plate mounting part 32 and a bottom plate limiting part 35. During installation, firstly, the second mounting part of the sliding structure 16 is pulled out, then the drawer positioning part 34 and the bottom plate limiting part 35 are engaged, and then the drawer mounting part 31 is connected to the bottom plate mounting part 32 by mounting screws 33, thereby realizing the connection between the drawer body 29 and the drawer bottom plate 30.

[0050] like Figure 11 As shown, the rope sleeve 18 penetrates the three-layer structure of the refrigerator body 1 and is sealed to the refrigerator shell 12 and the refrigerator liner 14. Here, the rope sleeve 18 penetrates the rear cover of the refrigerator liner 14. The rope sleeve 18 provides stable guidance for the rope structure, preventing friction and wear between the rope structure and the foam layer 13, and also blocks heat exchange between the inside and outside of the refrigerator, preventing the loss of cold air from the compartment.

[0051] like Figure 14 and Figure 15 As shown, the rope structure includes at least two design forms. The first design form is: like Figure 6 and Figure 14 As shown, the rope structure consists of a first rope 5, with one end designated as the first end and the other as the second end. Specifically, the first rope 5 originates from the tensioning assembly, first passing around a groove on the movable pulley at the bottom of the drawer 3, then through the rope sleeve 18, passing through the refrigerator shell 12, the foam layer 13, and the refrigerator liner 14, extending to the rear of the refrigerator body 1, wrapping around the circumferential side wall of the rotating wheel 20, then exiting from the other side of the rotating wheel 20, passing through the rope sleeve 18 again to return to the interior of the refrigerator cavity, changing direction after passing through the fixed pulley 2, and then passing around another groove on the movable pulley 4; the other end of the first rope 5 is finally fixed to the bottom wall of the refrigerator cavity near the opening, forming a complete closed-loop transmission path. Here, the type of the first rope 5 is, for example, a steel wire rope.

[0052] like Figure 15 As shown, the second design configuration includes a rope structure comprising a first rope 5 and a second rope 17. One end of the first rope 5 is the first end, and one end of the second rope 17 is the second end. Specifically, the first end of the first rope 5 is elastically connected to the bottom of the refrigerator compartment away from the opening, and its other end is connected to the drive unit of the drive structure via a movable pulley 4. The second end of the second rope 17 is connected to the bottom wall of the refrigerator compartment near the opening, and its other end is connected to the drive unit of the drive structure via a movable pulley 4 and a fixed pulley 2. Here, the first rope 5 and the second rope 17 are, for example, steel wire ropes.

[0053] The first rope 5, the second rope 17, and the drive structure's wheel 20 can be connected by a snap-fit ​​mechanism. For example... Figure 15 As shown, the ends of the first rope 5 and the second rope 17 are provided with rope terminals 26, which are engaged with the grooves on the wheel 20.

[0054] The specific working process of this vehicle refrigerator is as follows: Figure 12 This shows the process of opening the drawer. Figure 18 This demonstrates the process of closing the drawer. When drawer 3 performs the opening action, as shown... Figure 12As shown, the drive motor 19 rotates counterclockwise, causing the wheel 20 to rotate counterclockwise synchronously. At this time, the rope structure on the side of the wheel 20 closest to the fixed pulley 2, that is, the rope segment after passing through the fixed pulley 2, is contracted and wound. After the direction of this rope segment is changed by the fixed pulley 2, it generates a forward pulling force on the movable pulley 4, that is, a pulling force towards the opening. Under the action of the pulling force, the movable pulley 4 moves forward in the first direction, synchronously driving the drawer 3 to extend from the inside of the refrigerator cavity to the outside of the opening, realizing the opening of the drawer 3. At the same time, the rope structure on the side of the wheel 20 closest to the tensioning component is released, but because the elastic connection at one end of the rope structure will stretch synchronously, the total length of the rope structure can always remain unchanged and have pre-tension, avoiding the rope from becoming loose and stuck.

[0055] When it is necessary to close drawer 3, such as Figure 18 As shown, the drive motor 19 rotates clockwise, causing the rotating wheel 20 to rotate clockwise synchronously. At this time, the rope structure on the side of the rotating wheel 20 near the tensioning component is contracted and wound. This section of rope structure directly pulls the movable pulley 4 to move backward, that is, to the side away from the opening. The movable pulley 4 drives the drawer 3 to retract along the guide rail 16 into the refrigerator cavity, and finally realizes the drawer closing. During this process, the rope structure on the side near the fixed pulley 2 is released. Similarly, under the elastic action of the tensioning component, the rope structure remains in a pre-tensioned state to ensure smooth transmission.

[0056] Compared to the traditional sliding rail type vehicle refrigerator structure, the technical solution of this application reduces the required motor torque by using the combination of fixed pulley 2, movable pulley 4 and rope 5 to drive the drawer 3 to open and close automatically. The drive motor 19 can meet the torque requirements by using a miniaturized motor. Moreover, it occupies little space behind the refrigerator body 1, which greatly saves the space at the rear of the cabinet and is suitable for the limited installation space in vehicle scenarios.

[0057] Furthermore, a tensioning assembly is provided at the bottom of the refrigerator compartment. The tensioning part of the tensioning assembly is connected to the end of the rope structure. The tensioning assembly can be connected to either end of the rope structure, or multiple tensioning assemblies can be provided, each connected to both ends of the rope structure. Figure 7 Part A in the diagram is the tensioning assembly.

[0058] Specifically, such as Figure 8 As shown, the tensioning assembly includes: Tensioning shell 6, Pressure block 7 is disposed inside tension housing 6; the end of the rope structure passes through tension housing 6 and is connected to pressure block 7; The first elastic element 8 is disposed inside the tensioning housing 6. One side of the first elastic element 8 abuts against the pressure block 7, and the other side abuts against the side of the tensioning housing 6 near the opening.

[0059] It should be noted that the tensioning housing 6 serves as the mounting carrier and protective shell for the tensioning assembly. It connects to the bottom wall of the mounting base 15, thus not occupying the path space for the drawer 3 to slide along the guide rail 16, and also aligning with the extension direction of one end of the rope structure. Here, the tensioning housing 6 can be a separate component, directly connected to the bottom wall of the refrigerator compartment via bolts, clips, or other fixing structures; alternatively, a tensioning housing 6 can be directly injection-molded onto the sheet metal during the injection molding of the mounting base 15.

[0060] The pressure block 7 is completely contained inside the tension housing 6 and can slide along the inner wall of the tension housing 6. Its sliding direction is consistent with the length direction of the rope structure, that is, the direction of the drawer 3 being pulled out. The position of the pressure block 7 inside the tension housing 6 is not fixed. It will move with the extension and retraction state of the rope structure and the change of the elastic force of the first elastic element 8. It is always located between the end connection point of the rope structure and the contact point of the first elastic element 8, and is the medium for force transmission.

[0061] The first elastic element 8 is disposed inside the tensioning housing 6, and is located between the tensioning housing 6 near the opening and the pressure block 7. The installation position of the first elastic element 8 must ensure that it can extend and retract along the length of the rope 5. When the pressure block 7 moves towards the tensioning housing 6 near the opening, the first elastic element 8 is compressed; when the pressure block 7 moves away from the opening, the first elastic element 8 restores its deformation and pushes the pressure block 7 back to its original position through elastic force. Here, the first elastic element 8 is, for example, a compression spring.

[0062] like Figure 8 As shown, the end of the rope structure has a rope terminal 26, which is, for example, a cylindrical or block-shaped fixed end. The end of the rope structure first passes through a preset through hole near the opening side of the tensioning housing 6, and then connects to the pressure block 7. The rope terminal 26 is embedded in the groove of the pressure block 7. Through the limiting effect of the groove of the pressure block 7, the end of the rope 5 is fixed to the pressure block 7 as one unit. When the rope structure is subjected to tension or release, it can synchronously drive the pressure block 7 to move within the tensioning housing 6. Here, the size of the preset through hole matches the diameter of the rope structure, allowing only the rope structure to pass through and restricting the pressure block 7 from coming out of the hole.

[0063] During the opening of drawer 3, drive motor 19 drives wheel 20 to rotate counterclockwise. Wheel 20 retracts the rope structure near the fixed pulley 2. When drawer 3 is pulled open, the rope structure connected to the tensioning component is released and tends to slack. At this time, the first elastic element 8 begins to recover its deformation and generates elastic force away from the opening, pushing the pressure block 7 to move synchronously. The pressure block 7 drives the end of the rope structure to move away from the opening, re-tightening the released rope structure and maintaining the preload of the rope structure to avoid transmission jamming due to slack.

[0064] When the drive motor 19 drives the wheel 20 to rotate clockwise, the wheel 20 retracts the rope structure connected to the tensioning assembly on one side. When the drawer 3 is pulled to close, the rope structure generates a pulling force on the pressure block 7 towards the opening side. Under the action of the pulling force, the pressure block 7 moves towards the side closer to the opening, squeezing the first elastic element 8, compressing it and storing elastic potential energy. At this time, the rope structure is in a taut state, and the stored elastic potential energy prepares for the subsequent re-tensioning when the rope structure relaxes.

[0065] Example 2 Compared with Example 1, such as Figure 9 and Figure 10 As shown, in this embodiment, the tensioning component is designed as follows: The mounting slot is located on the bottom wall of the refrigerator compartment; the opening of the mounting slot is slidably connected to the pulley base 10 at the bottom of the fixed pulley 2. The second elastic element 9 is disposed in the mounting groove. One end of the second elastic element 9 is connected to the pulley base 10 at the bottom of the fixed pulley 2, and the other end is connected to the inner wall of the mounting groove near the opening.

[0066] The mounting groove serves as the basic mounting carrier for the tensioning component. It is located on the bottom wall of the refrigerator cavity, close to the opening, and adjacent to the mounting area of ​​the fixed pulley 2, ensuring that the fixed pulley 2 can directly cooperate with the mounting groove to slide. The groove extends along the first direction, and the groove size is adapted to the pulley base 10 of the fixed pulley 2, providing sliding space for the fixed pulley 2. At the same time, the groove reserves a mounting position for the second elastic element 9.

[0067] The second elastic element 9 is completely disposed inside the mounting groove, between the inner wall of the mounting groove near the opening and the pulley base 10 at the bottom of the fixed pulley 2. It is arranged along the first direction, and its extension and contraction direction is consistent with the sliding direction of the fixed pulley 2, ensuring that the elastic force can directly act on the fixed pulley 2. Here, the second elastic element 9 is, for example, a tension spring, which has a certain length in its natural state. When the fixed pulley 2 moves away from the opening, the tension spring is stretched and generates a reverse tension force, providing tension to the rope structure. The end of the second elastic element 9 can be connected to the inner wall of the mounting groove and the fixed pulley 2 by a hook-and-loop connection.

[0068] Furthermore, the groove of the mounting slot is slidably connected to the fixed pulley 2 via the pulley base 10. The fixed pulley 2 is provided with the pulley base 10 on one side. The groove of the mounting slot is provided with two guide grooves 11 arranged along the first direction. The two sides of the pulley base 10 correspond one-to-one with the two guide grooves 11 and are slidably connected. The first direction is set perpendicular to the cross-section of the opening.

[0069] Here, the fixed pulley 2 is still a rotatable pulley structure, and the circumferential sidewall is used to wind the rope structure. However, it is no longer fixedly installed, but is slidably connected to the mounting groove through the pulley base 10. It can move along the first direction with the pulley base 10 to realize the function of adjusting the tension of the rope structure by changing its own position.

[0070] The pulley base 10 is a block or frame structure, which is fixedly connected to the fixed pulley 2 through a rotating shaft to ensure that the fixed pulley 2 can rotate freely. The overall size of the base matches the groove of the mounting slot, and the two sides are provided with protrusions or slide rails that are adapted to the guide slide groove 11, which serve as the force carrier for the sliding of the fixed pulley 2.

[0071] The guide groove 11 is formed on both sides of the groove opening of the mounting groove. It extends along the first direction and is consistent with the extension direction of the mounting groove. It is used to allow the pulley base 10 to slide along the first direction, limit its displacement in the direction perpendicular to the first direction, and prevent the fixed pulley 2 from deviating and causing the rope structure to derail.

[0072] During the drawer opening process, the drive motor 19 drives the rotating wheel 20 to rotate counterclockwise. The rotating wheel 20 retracts the rope structure near the fixed pulley 2, pulling the drawer 3 open. At this time, the rope segment associated with the tensioning component, that is, the rope structure that wraps around the fixed pulley 2, slides along the guide groove 11 away from the opening under the pulling force of the second elastic element 9, shortening the distance between the fixed pulley 2 and the movable pulley 4, thereby tightening the rope structure, maintaining the preload of the rope structure, and avoiding transmission jamming. During this process, the second elastic element 9 is in a tensioned state.

[0073] When the drive motor 19 drives the wheel 20 to rotate clockwise, the wheel 20 retracts the rope structure away from the opening, pulling the drawer 3 to close. At this time, under the pulling force of the second elastic element 9, the fixed pulley 2 drives the pulley base 10 to slide along the guide groove 11 towards the opening. The stretching amount of the second elastic element 9 will decrease, ensuring that the rope structure is always in a taut state. This process is similar to the principle of the pressure block 7 squeezing the first elastic element 8 to store potential energy in Embodiment 1, but the type of elastic force changes from compression elastic force to tension elastic force, and the direction of force is opposite.

[0074] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A vehicle refrigerator with a rope-driven drawer, characterized in that, include: The refrigerator body (1) has a hollow interior forming a refrigerator chamber; an opening communicating with the refrigerator chamber is provided on one side of the refrigerator body (1); a drive structure is provided at the rear of the refrigerator body (1); a fixed pulley (2) is connected to the bottom wall of the refrigerator chamber near the opening. A drawer (3) extends through the opening and is slidably connected to the refrigerator cavity; a movable pulley (4) is provided at the bottom of the drawer (3) away from its pull-out side. The rope structure includes at least a first end and a second end. The first end is elastically connected to the bottom of the refrigerator chamber away from the opening. The second end passes through the movable pulley (4), the driving part of the driving structure, the fixed pulley (2), and the movable pulley (4) and is connected to the bottom wall of the refrigerator chamber near the opening. When the drive structure drives its drive unit to rotate, it switches the extension and retraction state of the rope structure, causing the movable pulley (4) to move, thereby controlling the opening and closing of the drawer (3).

2. A vehicle refrigerator with a rope-driven drawer according to claim 1, characterized in that, The rope structure is a first rope (5), one end of the first rope (5) is the first end, and the other end is the second end.

3. A vehicle refrigerator with a rope-driven drawer according to claim 1, characterized in that, The rope structure includes: The first rope (5) has one end as the first end and the other end is connected to the drive part of the drive structure by passing around the movable pulley (4). The second rope (17) has one end as the second end and the other end is connected to the drive part of the drive structure by passing around the movable pulley (4) and the fixed pulley (2).

4. A vehicle refrigerator with a rope-driven drawer according to claim 1, characterized in that, It also includes a tensioning assembly located at the bottom of the refrigerator compartment; The tensioning component includes: Tensioned shell (6). A pressure block (7) is disposed inside the tensioning housing (6); the end of the rope structure passes through the tensioning housing (6) and is connected to the pressure block (7); The first elastic element (8) is disposed inside the tensioning housing (6). One side of the first elastic element (8) abuts against the pressure block (7), and the other side abuts against the side of the tensioning housing (6) near the opening.

5. A vehicle refrigerator with a rope-driven drawer according to claim 1, characterized in that, It also includes a tensioning assembly located at the bottom of the refrigerator compartment; The tensioning component includes: The mounting slot is formed in the bottom wall of the refrigerator cavity; the opening of the mounting slot is slidably connected to the fixed pulley (2); The second elastic element (9) is disposed in the mounting groove. One end of the second elastic element (9) is connected to the fixed pulley (2), and the other end is connected to the inner wall of the mounting groove near the opening.

6. A vehicle refrigerator with a rope-driven drawer according to claim 5, characterized in that, The fixed pulley (2) is provided with a pulley base (10) on one side. The groove of the mounting slot is provided with two guide grooves (11) arranged along the first direction. The two sides of the pulley base (10) correspond one-to-one with the two guide grooves (11) and are slidably connected. The first direction is perpendicular to the cross-section of the opening.

7. A vehicle refrigerator with a rope-driven drawer according to claim 5, characterized in that, The refrigerator body (1) includes: The refrigerator shell (12), foam layer (13) and refrigerator liner (14) are arranged sequentially from the outside to the inside, and the internal space of the refrigerator liner (14) forms the refrigerator cavity.

8. A vehicle refrigerator with a rope-driven drawer according to claim 7, characterized in that, The bottom wall of the refrigerator liner (14) is also provided with a mounting base (15), and a sliding structure (16) that can extend along the first direction is provided between the mounting base (15) and the drawer (3). The sliding structure (16) has a first mounting part and a second mounting part that are slidably connected. The first mounting part is connected to the mounting base (15), and the second mounting part is connected to the bottom of the drawer (3).

9. A vehicle refrigerator with a rope-driven drawer according to claim 7, characterized in that, Also includes: Two rope sleeves (18) are provided, which pass through the refrigerator shell (12), the foam layer (13) and the refrigerator liner (14) in sequence, and the edges of the rope sleeves (18) are sealed to the refrigerator shell (12) and the refrigerator liner (14). The rope sleeves (18) are used to accommodate the rope structure.

10. A vehicle refrigerator with a rope-driven drawer according to claim 1, characterized in that, The drawer (3) includes: The drawer body (29) and the drawer bottom plate (30) located at the bottom of the drawer body (29) are provided with a connector (21) on the drawer bottom plate (30), and the connector (21) is connected to the movable pulley (4).

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