Vehicle-mounted refrigerator control method, vehicle-mounted refrigerator and vehicle
By monitoring the motor current and rotation number in real time, the accuracy and reliability of obstacle detection in vehicle refrigerator control were solved, obstacle damage was avoided, and the user comfort of the vehicle refrigerator was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI LIXIANG AUTOMOBILE CO LTD
- Filing Date
- 2024-10-18
- Publication Date
- 2026-04-21
AI Technical Summary
Existing vehicle refrigerator control methods have poor accuracy and reliability in judging obstacles, which may lead to damage to occupants and items. Furthermore, existing methods cannot effectively prevent obstacles from being damaged or destroyed.
By monitoring the motor current and the number of rotations of the output shaft in real time, it can determine whether there is an obstacle. If the current is greater than the set value and the number of rotations is less than the set number of rotations, the motor will be stopped and the output shaft will be reversed to prevent further movement.
It improves the accuracy and reliability of obstacle detection, avoids damage to obstacles and the refrigerator's interior, and enhances the user comfort of the vehicle refrigerator.
Smart Images
Figure CN121898069A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle technology, and more particularly to a method for controlling an in-vehicle refrigerator, an in-vehicle refrigerator, and a vehicle. Background Technology
[0002] With the development of vehicle technology, users have increasingly higher requirements for the comfort of using vehicles. As one type of in-vehicle product, the car refrigerator allows users to conveniently refrigerate and store food, drinks, and other items in their vehicles.
[0003] A vehicle-mounted refrigerator mainly consists of a refrigerator compartment and a refrigerator frame. The refrigerator compartment can be pulled out or pushed in through an opening in the refrigerator frame to open or close the refrigerator. To enhance the intelligence of the vehicle-mounted refrigerator, a motor drive mechanism is installed inside the refrigerator frame. This mechanism drives the refrigerator compartment to automatically extend from the opening in the refrigerator frame, thus automatically opening the refrigerator. However, during the automatic extension of the refrigerator compartment by the motor drive mechanism, there is a possibility that passengers and / or items in the vehicle may obstruct the movement of the refrigerator compartment. To address this issue, existing vehicle-mounted refrigerator control methods rely on the interval between FG pulse signals generated by the motor as a criterion. When the interval between FG pulse signals exceeds a set value, the motor's output shaft reverses by a set angle, causing the refrigerator compartment to return to its initial position. Although it can determine whether there are obstacles obstructing the automatic extension of the refrigerator compartment, there is a phenomenon that FG pulse signals are not generated when there are obstacles, resulting in poor accuracy and reliability in obstacle detection. Secondly, when an obstacle is detected, the motor drive mechanism is directly controlled to stop working, which may result in damage or even destruction to passengers and / or items in the vehicle. Summary of the Invention
[0004] The purpose of this invention is to provide a vehicle refrigerator control method, a vehicle refrigerator, and a vehicle, so as to solve the above-mentioned problems existing in the vehicle refrigerator control methods of the prior art.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] The control methods for vehicle-mounted refrigerators include:
[0007] During the process of the motor driving the first slider to move along the direction of extending out of the opening, it is determined in real time whether the current of the motor is greater than or equal to a first set current; and whether the number of rotations of the output shaft of the motor is greater than or equal to a set number of rotations.
[0008] If the current of the motor is greater than or equal to the first set current, and the number of rotations is less than the set number of rotations, then the motor is controlled to stop running for a first set time, and then the output shaft of the motor is controlled to reverse.
[0009] As a preferred embodiment of the above-mentioned vehicle refrigerator control method, if the number of rotations is greater than or equal to the set number of rotations, the output shaft of the motor is immediately reversed after the motor stops running.
[0010] As a preferred embodiment of the above-mentioned vehicle refrigerator control method, the first set duration is greater than or equal to 100ms.
[0011] As a preferred embodiment of the above-mentioned vehicle refrigerator control method, the first setting duration is 100ms.
[0012] As a preferred embodiment of the above-mentioned vehicle-mounted refrigerator control method, the vehicle-mounted refrigerator control method further includes:
[0013] During the process of the motor driving the first slider to move along the direction of retracting into the opening, it is determined in real time whether the current of the motor is greater than or equal to the second set current; it is also determined whether the number of rotations of the output shaft of the motor is greater than or equal to the set number of rotations.
[0014] If the current of the motor is greater than or equal to the second set current, and the number of rotations is less than the set number of rotations, then the motor is controlled to stop running for a second set time before the motor is controlled to start working, and the rotation direction of the motor's output shaft remains unchanged.
[0015] As a preferred embodiment of the above-mentioned vehicle refrigerator control method, the second setting duration is greater than or equal to 1 second.
[0016] As a preferred embodiment of the above-mentioned vehicle refrigerator control method, the second setting duration is 1 second.
[0017] As a preferred embodiment of the above-mentioned vehicle-mounted refrigerator control method, the vehicle-mounted refrigerator control method further includes:
[0018] After the vehicle refrigerator is powered on, the motor is controlled to drive the first sliding member to move along the direction of the orientation into the opening; when the current of the motor is greater than or equal to the second set current, the motor is controlled to stop running; wherein, the initial limit position of the first sliding member is provided with a first limit limiting member, and the first sliding member can abut against the first limit limiting member along the orientation.
[0019] A vehicle-mounted refrigerator includes a refrigerator frame, a refrigerator compartment, and a drive mechanism. The refrigerator compartment is slidably disposed on the refrigerator frame along a directional direction and can extend or retract into an opening in the refrigerator frame. The drive mechanism includes a motor and a first sliding member. The motor and the first sliding member are velocally connected. The first sliding member is slidably disposed on the refrigerator frame along the directional direction. The first sliding member can abut against the refrigerator compartment and drive the refrigerator compartment to move synchronously along the directional direction towards the direction of extending out of the opening. It is used to execute the above-described vehicle-mounted refrigerator control method.
[0020] As a preferred embodiment of the above-mentioned vehicle refrigerator, the vehicle refrigerator further includes a sliding mounting base fixedly connected to the refrigerator frame, and the first sliding member is slidably connected to the sliding mounting base along the orientation;
[0021] The refrigerator frame, the motor housing, or the sliding mounting base is provided with a first limit limiting member. When the first sliding member moves in the direction of retracting into the opening along the orientation direction to abut against the first limit limiting member, the first sliding member returns to the initial limit position.
[0022] As a preferred embodiment of the above-mentioned vehicle-mounted refrigerator, the refrigerator frame or the sliding mounting base is further provided with a second limit limiting member. The second limit limiting member is located away from the motor relative to the first limit limiting member along the orientation. When the first sliding member moves along the orientation in the direction of extending out of the opening to abut against the second limit limiting member, the first sliding member moves to the extended limit position.
[0023] As a preferred embodiment of the aforementioned vehicle-mounted refrigerator, the drive mechanism further includes a Hall sensor, which is used to monitor the number of rotations of the motor's output shaft around its own central axis.
[0024] Vehicles, including the aforementioned vehicle-mounted refrigerators.
[0025] The beneficial effects of this invention are:
[0026] This invention discloses a vehicle-mounted refrigerator control method, a vehicle-mounted refrigerator, and a vehicle. The vehicle-mounted refrigerator control method includes: during the process of a motor driving a first sliding member to move along a direction extending from the opening, determining in real time whether the motor current is greater than or equal to a first set current; determining whether the number of rotations of the motor's output shaft is greater than or equal to a set number of rotations. If the motor current is greater than or equal to the first set current, and the number of rotations is less than the set number of rotations, then the motor is controlled to stop running for a first set time, and then the motor's output shaft is controlled to reverse.
[0027] This vehicle-mounted refrigerator control method uses a motor as the driving component. It directly acquires the motor's current and the number of rotations of the motor's output shaft around its central axis. Based on the motor's current and the number of rotations of the motor's output shaft, it determines whether there are any obstructions hindering the refrigerator's interior as the motor drives the first sliding member to move in the direction of the extended opening. This effectively improves the accuracy and reliability of determining whether there are obstructions hindering the refrigerator's interior.
[0028] During the movement of the first sliding member driven by the motor along the direction of the protruding opening, if an obstacle exerts a resisting force on the refrigerator compartment in the opposite direction of its movement, this force will be transmitted sequentially through the refrigerator compartment and the first sliding member to the motor's output shaft, making it difficult for the motor's output shaft to rotate. Since the motor current is positively correlated with the resistance encountered when the motor's output shaft rotates, the motor current will continuously increase. Therefore, when the motor current is greater than or equal to a first set current, and the number of rotations is less than a set number of rotations, it indicates that an obstacle is preventing the refrigerator compartment from moving along the direction of the protruding opening. In this case, the motor will stop running for a first set time, and then the motor's output shaft will reverse.
[0029] During the process of the motor driving the first sliding member to move in the direction of the directional opening, when it is determined that there is an obstruction preventing the refrigerator inner hopper from moving in the direction of the directional opening, the motor is first controlled to stop running for a first set time to avoid the refrigerator inner hopper continuing to move in the direction of the directional opening and damaging or even destroying the obstruction and / or the refrigerator inner hopper.
[0030] Therefore, by using this vehicle refrigerator control method to control the aforementioned vehicle refrigerator, during the process of the motor-driven first sliding member moving in the direction of the extended opening, it is possible to accurately, efficiently, and stably determine whether there are any obstructions preventing the refrigerator compartment from moving in the direction of the extended opening. Secondly, during the process of the motor-driven first sliding member moving in the direction of the extended opening, when an obstruction is detected, secondary damage or even damage to the obstruction and / or the refrigerator compartment can be avoided. Furthermore, passengers can push and pull the refrigerator compartment as needed, effectively improving the user comfort of the vehicle refrigerator. Attached Figure Description
[0031] Figure 1 This is a cross-sectional view of a vehicle-mounted refrigerator provided in a specific embodiment of the present invention;
[0032] Figure 2 This is a partial cross-sectional view of a vehicle-mounted refrigerator provided in a specific embodiment of the present invention;
[0033] Figure 3 This is a partial structural schematic diagram of a vehicle-mounted refrigerator provided in a specific embodiment of the present invention;
[0034] Figure 4This is a flowchart of a vehicle-mounted refrigerator control method provided in a specific embodiment of the present invention. Figure 1 ;
[0035] Figure 5 This is a flowchart of a vehicle-mounted refrigerator control method provided in a specific embodiment of the present invention. Figure 2 .
[0036] In the picture:
[0037] 1. Refrigerator frame; 11. Opening;
[0038] 2. Refrigerator interior drawer;
[0039] 3. Drive mechanism; 31. Motor; 32. First sliding member; 33. Transmission rod; 34. Coupling;
[0040] 4. Sliding mounting base; 41. First slide groove; 42. Second end face;
[0041] 5. Dampers;
[0042] 6. Refrigerator exterior;
[0043] 7. Insulation layer;
[0044] 8. Touch control screen. Detailed Implementation
[0045] The present invention 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, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0046] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0048] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0049] This invention provides a vehicle-mounted refrigerator. For example... Figures 1 to 3 As shown, the vehicle-mounted refrigerator includes a refrigerator frame 1, a refrigerator compartment 2, and a drive mechanism 3. The refrigerator compartment 2 is slidably disposed on the refrigerator frame 1 and can extend or retract into the opening 11 of the refrigerator frame 1. The drive mechanism 3 includes a motor 31 and a first sliding member 32, which are connected by a transmission. The first sliding member 32 is slidably disposed on the refrigerator frame 1. The first sliding member 32 can abut against the refrigerator compartment 2 and drive the refrigerator compartment 2 to move synchronously in the direction of extending out of the opening 11.
[0050] When the refrigerator compartment 2 is to be opened, the motor 31 drives the first sliding member 32 to move along the direction of the extended opening 11. When the first sliding member 32 abuts against the refrigerator compartment 2, it drives the refrigerator compartment 2 to move synchronously along the direction of the extended opening 11, thereby automatically opening the refrigerator compartment 2. After the first sliding member 32 moves a certain distance along the direction of the extended opening 11, a handle gap is formed between the refrigerator compartment 2 and the refrigerator frame 1. A person can reach into the handle gap to pull the refrigerator compartment 2 further outward, allowing it to continue moving along the direction of the extended opening 11. When the refrigerator compartment 2 is to be closed, it is manually pushed along the direction of the retracted opening 11 until it is fully pushed in, thus closing the refrigerator compartment 2.
[0051] When motor 31 drives the first sliding member 32 to move to its extended limit position along the direction of extending from the opening 11, the output shaft of motor 31 reverses. Motor 31 then drives the first sliding member 32 to move to its initial limit position along the direction of retracting from the opening 11, to facilitate the next electric opening of the refrigerator inner drawer 2.
[0052] Specifically, when the output shaft of motor 31 rotates around its central axis in a first clockwise direction, it can drive the first sliding member 32 to move in a directional direction toward the protruding opening 11. When the output shaft of motor 31 rotates around its central axis in a second clockwise direction, it can drive the first sliding member 32 to move in a directional direction toward the retracting opening 11. The first clockwise direction and the second clockwise direction are opposite. That is, in this embodiment, as... Figure 1 and Figure 2 As shown, when the output shaft of motor 31 rotates around its central axis in a first clockwise direction, motor 31 drives the first sliding member 32 to move from left to right. When the output shaft of motor 31 rotates around its central axis in a second clockwise direction, motor 31 drives the first sliding member 32 to move from right to left. It can be understood that the orientation is as follows... Figure 1 and Figure 2 The left and right directions.
[0053] Specifically, the initial limit position is defined as the limit position of the first slider 32 moving to the left along the orientation. The extension limit position is the limit position of the first slider 32 moving to the right along the orientation. In this embodiment, along the orientation, the initial limit position is located between the motor 31 and the extension limit position. Figure 1 The first slider 32 is located at the extended limit position. Figure 2 The first slider 32 is located at the initial limit position.
[0054] Specifically, in this embodiment, when the motor 31 drives the first sliding member 32 to move to its extended limit position along the direction of extending out of the opening 11, the output shaft of the motor 31 immediately reverses after the motor 31 stops running. The motor 31 then drives the first sliding member 32 to move to its initial limit position along the direction of retracting into the opening 11, so as to facilitate the next electric opening of the refrigerator inner drawer 2.
[0055] Among them, such as Figures 1 to 3 As shown, the drive mechanism 3 also includes a transmission rod 33. One axial end of the transmission rod 33 is connected to the output shaft of the motor 31. A first sliding member 32 is threadedly connected to the transmission rod 33 and is slidably disposed on the refrigerator frame 1. The motor 31 can drive the transmission rod 33 to rotate about its own central axis, so that the first sliding member 32 can move in a directional manner.
[0056] When motor 31 drives transmission rod 33 to rotate around its central axis in a first clockwise direction, it drives the first sliding member 32 to move in the direction of extending out of opening 11. Thus, when the first sliding member 32 abuts against the refrigerator inner compartment 2, it drives the refrigerator inner compartment 2 to move synchronously in the direction of extending out of opening 11, thereby automatically opening the refrigerator inner compartment 2. When the first sliding member 32 moves to its extended limit position in the direction of extending out of opening 11, a handle gap is formed between the refrigerator inner compartment 2 and the refrigerator frame 1 in the direction of ... To make it easier to open the refrigerator compartment 2 electrically next time.
[0057] In this embodiment, the transmission rod 33 is a lead screw. The first sliding member 32 is a lead nut. It can be understood that the central axis of the transmission rod 33 and the central axis of the output shaft of the motor 31 are parallel in orientation.
[0058] In this embodiment, as Figure 2 As shown, in an exemplary configuration, the transmission rod 33 is connected to the output shaft of the motor 31 via a coupling 34. It is understood that the central axis of the transmission rod 33 and the central axis of the output shaft of the motor 31 are collinear. In other embodiments, the transmission rod 33 and the output shaft of the motor 31 may also be connected via a structure such as a gear assembly.
[0059] Among them, such as Figure 2 and Figure 3 As shown, the vehicle-mounted refrigerator also includes a sliding mounting base 4 fixedly connected to the refrigerator frame 1. The sliding mounting base 4 is provided with a first sliding groove 41 extending in a specific direction. A first sliding member 32 is slidably connected to the first sliding groove 41. The first sliding groove 41 can limit the first sliding member 32 to move only in a specific direction, preventing the first sliding member 32 from rotating with the transmission rod 33.
[0060] Preferably, such as Figure 2 and Figure 3 As shown, the other end of the transmission rod 33 along the axial direction is rotatably connected to the sliding mounting base 4. This improves the rotational stability of the transmission rod 33 around its own central axis, thereby enhancing the working performance and service life of the drive mechanism 3.
[0061] Specifically, the other end of the transmission rod 33 along the axial direction is rotatably connected to the sliding mounting base 4 via a bearing. Alternatively, the other end of the transmission rod 33 along the axial direction is directly rotatably inserted into the sliding mounting base 4.
[0062] Optionally, the portion of the first sliding member 32 that contacts at least the inner peripheral wall of the first slide groove 41 is coated with lubricating oil. And / or, the portion of the inner peripheral wall of the first slide groove 41 that contacts at least the first sliding member 32 is coated with lubricating oil. This arrangement can improve the smoothness of the sliding of the first sliding member 32 relative to the first slide groove 41, thereby further improving the working performance and service life of the drive mechanism 3.
[0063] The refrigerator frame 1 or the housing or sliding mounting base 4 of the motor 31 is provided with a first limit limiting member. When the first sliding member 32 moves along the direction of the retracted opening 11 to abut against the first limit limiting member, the first sliding member 32 returns to its initial limit position. This is to prevent the first sliding member 32 from getting too close to the motor 31 along the direction of the retracted opening 11. This facilitates the accurate control of the motor 31 driving the refrigerator inner compartment 2 to move along the direction of the retracted opening 11 to the extended limit position.
[0064] In this embodiment, the first limit limiting member is preferably disposed on the sliding mounting base 4. This facilitates the assembly of the first limit limiting member and the sliding mounting base 4. Further, the first limit limiting member is preferably a first end face on the sliding mounting base 4. This reduces the number of parts and facilitates assembly. As an alternative, the first limit limiting member is a plate fixedly connected to the sliding mounting base 4.
[0065] The refrigerator frame 1 or sliding mounting base 4 is provided with a second limit stop. The second limit stop is oriented away from the motor 31 relative to the first limit stop. When the first sliding member 32 moves in the direction of the protrusion opening 11 to abut against the second limit stop, the first sliding member 32 moves to the protrusion limit position. Specifically, when the first sliding member 32 abuts against the second limit stop, the first sliding member 32 can no longer continue to move in the direction of the protrusion opening 11, thus limiting the stroke of the first sliding member 32 along the oriented direction.
[0066] In this embodiment, the second limit stop is preferably disposed on the sliding mounting base 4. This facilitates the assembly of the second limit stop and the sliding mounting base 4.
[0067] In this embodiment, as Figure 2 and Figure 3 As shown, the preferred second limit stop is the second end face 42 on the sliding mounting base 4. This reduces the number of parts and facilitates assembly. As an alternative, the second limit stop is a plate fixedly connected to the sliding mounting base 4.
[0068] The vehicle-mounted refrigerator also includes a sliding assembly, which comprises a slide rail and a second sliding member that slide along a directional interface. One of the slide rail and the second sliding member is fixedly connected to the refrigerator frame 1, and the other is fixedly connected to the refrigerator inner compartment 2. This allows the refrigerator inner compartment 2 to slide along a directional interface with the refrigerator frame 1.
[0069] In this embodiment, the slide rail is preferably fixedly connected to the refrigerator frame 1. The second sliding member is fixedly connected to the refrigerator inner compartment 2. As an alternative, the second sliding member is fixedly connected to the refrigerator frame 1, and the slide rail is fixedly connected to the refrigerator inner compartment 2.
[0070] Specifically, the slide rail is provided with a second slide groove extending in a direction, and the second sliding member slides in cooperation with the second slide groove.
[0071] Optionally, at least the portion of the second sliding member in contact with the inner peripheral wall of the second slide groove is coated with lubricating oil. And / or, at least the portion of the inner peripheral wall of the second slide groove in contact with the second sliding member is coated with lubricating oil. This improves the smoothness of the sliding of the second sliding member relative to the second slide groove, thereby further improving the working performance and service life of the drive mechanism 3.
[0072] Optionally, multiple sliding components are provided, spaced apart along a horizontal direction. The horizontal direction is perpendicular to the orientation and also perpendicular to the height direction of the refrigerator compartment 2. This improves the smoothness of the refrigerator compartment 2 sliding along the orientation.
[0073] Preferably, in this embodiment, there are two sliding components, which are distributed horizontally at intervals on both sides of the sliding mounting base 4. This improves the stability of the refrigerator compartment 2 as it slides in the correct direction while reducing weight and cost. In other embodiments, the number of sliding components may be one, three, or four, etc.
[0074] The drive mechanism 3 also includes a Hall sensor, which monitors the number of revolutions the output shaft of the motor 31 makes around its central axis. Specifically, the Hall sensor emits several Hall signals for each revolution the output shaft of the motor 31 makes around its central axis. The number of Hall signals emitted by the Hall sensor for each revolution the output shaft of the motor 31 makes around its central axis can be adaptively set according to the actual control accuracy requirements. The specific structure of the Hall sensor is prior art and will not be described in detail here.
[0075] Optionally, such as Figure 1As shown, the refrigerator frame 1 is equipped with a damper 5 that contacts the refrigerator compartment 2. This design allows the damper 5 to apply a damping force opposite to the direction of movement of the refrigerator compartment 2 when it is manually pulled along the direction of the extended opening 11. This prevents the refrigerator compartment 2 from experiencing sudden, large-amplitude movements that could affect the smoothness and stability of its directional movement. Furthermore, when the refrigerator compartment 2 is manually pulled along the direction of the extended opening 11, the damper 5 provides a tactile feel, improving the user comfort of the vehicle refrigerator. Additionally, when the refrigerator compartment 2 is manually pushed along the direction of the retracted opening 11, the damper 5 also applies a damping force opposite to the direction of movement, preventing sudden, large-amplitude movements that could affect the smoothness and stability of its directional movement. Secondly, when the refrigerator compartment 2 is manually pushed to move in the direction of the retracted opening 11, the damper 5 can also provide a tactile feel for manually pushing the refrigerator compartment 2, thereby improving the comfort of using the vehicle refrigerator.
[0076] In this embodiment, as Figure 1 As shown, along the orientation, the damper 5 is away from the motor 31 relative to the sliding mount 4. This facilitates the assembly of the damper 5. Alternatively, along the orientation, the damper 5 and the sliding mount 4 are located in the same area.
[0077] Preferably, in this embodiment, such as Figure 1 As shown, the damper 5 contacts the outer bottom wall of the refrigerator compartment 2 to reduce the width of the vehicle refrigerator in the horizontal direction. Specifically, when a vehicle refrigerator is used in a vehicle, it is typically oriented parallel to the length direction of the vehicle. The horizontal direction is parallel to the width direction of the vehicle. Therefore, the contact between the damper 5 and the outer bottom wall of the refrigerator compartment 2, compared to the contact between the damper 5 and one of the outer walls of the refrigerator compartment 2 in the horizontal direction, can reduce the width of the vehicle refrigerator in the horizontal direction, thereby reducing the space occupied by the vehicle refrigerator in the width direction of the vehicle. As an alternative, the damper 5 contacts at least one outer wall of the refrigerator compartment 2 in the horizontal direction.
[0078] In this embodiment, as Figure 1 As shown, the damper 5 is a damping wheel, which makes rolling contact with the refrigerator inner drawer 2. In other embodiments, the damper 5 is a damping sheet or damping block, which makes frictional contact with the refrigerator inner drawer 2.
[0079] Among them, such as Figure 1 and Figure 2As shown, the vehicle-mounted refrigerator also includes a refrigerator outer shell 6, which has an installation space and an installation port communicating with the installation space. The refrigerator frame 1 is located within the installation space and is fixedly connected to the refrigerator outer shell 6. The installation port corresponds to and communicates with the opening 11.
[0080] Specifically, such as Figure 1 and Figure 2 As shown, a heat insulation layer 7 is filled between the refrigerator outer shell 6 and the refrigerator frame 1 to improve the cooling effect of the vehicle refrigerator.
[0081] The specific structures of the refrigerator compartment 2 and the refrigerator frame 1 are existing technologies and will not be described in detail here.
[0082] The present invention also provides a vehicle, including the aforementioned vehicle-mounted refrigerator. By employing the aforementioned vehicle-mounted refrigerator, the performance of the vehicle can be effectively improved.
[0083] Specifically, such as Figure 1 As shown, the vehicle also includes a touch control screen 8 and a controller. Both the touch control screen 8 and the motor 31 are electrically connected to the controller. The controller can control the motor 31 based on the electrical signals emitted by the touch control screen 8. The controller can also control the motor 31 based on the current of the motor 31, the number of rotations of the output shaft of the motor 31, etc.
[0084] In this embodiment, when the refrigerator compartment 2 is to be opened, the occupant touches the control screen 8. The controller, based on the electrical signal emitted by the control screen 8, controls the motor 31 to move the first sliding member 32 along the direction of the extended opening 11 to the extended limit position. When the first sliding member 32 moves to the extended limit position along the direction of the extended opening 11, the controller controls the motor 31 to stop running and then controls the output shaft of the motor 31 to immediately reverse.
[0085] Specifically, the Hall sensor is electrically connected to the controller.
[0086] In this embodiment, as Figure 1 As shown, during the process of motor 31 driving the first sliding member 32 to move in the direction of extending out of the opening 11, and during the process of motor 31 driving the first sliding member 32 to move in the direction of retracting into the opening 11, the controller controls motor 31 based on the current of motor 31, the number of rotations of the output shaft of motor 31, etc. It can be understood that the number of rotations of the output shaft of motor 31 around its own central axis can be accurately calculated based on the number of Hall electrical signals sent to the controller by the Hall sensor. The specific calculation method for calculating the number of rotations of the output shaft of motor 31 around its own central axis based on the number of Hall electrical signals is prior art and will not be elaborated here.
[0087] In this embodiment, the controller is a vehicle controller.
[0088] In other embodiments, the touch control screen 8 can be replaced with a button control screen, etc. It only needs to be able to send an electrical signal to the controller to open the refrigerator compartment 2.
[0089] Existing vehicle refrigerator control methods rely on the interval between FG pulse signals generated by the motor as a criterion. When the interval exceeds a set value, the motor's output shaft reverses by a set angle, returning the refrigerator compartment to its initial position. While this method can determine if there are obstacles obstructing the automatic extension of the refrigerator compartment, it sometimes fails to generate FG pulse signals when obstacles are present, resulting in poor accuracy and reliability in obstacle detection. Furthermore, detecting an obstacle directly stops the motor drive mechanism, potentially causing damage to passengers and / or items in the vehicle. Therefore, this invention also provides a vehicle refrigerator control method for use in the aforementioned vehicle refrigerator.
[0090] The control method for the vehicle-mounted refrigerator includes:
[0091] like Figure 4 As shown, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the directional extension opening 11, it is determined in real time whether the current of the motor 31 is greater than or equal to the first set current; and whether the number of rotations of the output shaft of the motor 31 is greater than or equal to the set number of rotations.
[0092] If the current of motor 31 is greater than or equal to the first set current and the number of rotations is less than the set number of rotations, then control motor 31 to stop running for a first set time and control the output shaft of motor 31 to reverse.
[0093] It is understandable that the process of the motor 31 driving the first sliding member 32 to move along the direction of the extension opening 11 is the process of the motor 31 driving the first sliding member 32 to move along the direction from the initial limit position to the extension limit position.
[0094] By setting motor 31 as the driving component, the controller can directly obtain the current of motor 31. Based on the number of Hall signals sent by the Hall sensor, the controller can accurately calculate the number of rotations of the output shaft of motor 31 around its central axis. Therefore, by determining whether there is an obstruction hindering the refrigerator compartment 2 during the movement of the first sliding member 32 along the directional direction of the protruding opening 11 driven by motor 31, the accuracy and reliability of determining whether there is an obstruction hindering the refrigerator compartment 2 can be effectively improved.
[0095] During the process of motor 31 driving the first sliding member 32 to move in the direction of the extended opening 11, that is, during the process of motor 31 driving the first sliding member 32 to move in the direction of the extended opening 11 from the initial limit position to the extended limit position, if there is an obstacle exerting a resistance force on the refrigerator inner compartment 2 in the opposite direction of movement to the refrigerator inner compartment 2, this resistance force will be transmitted to the output shaft of motor 31 in sequence through the refrigerator inner compartment 2, the first sliding member 32 and the transmission rod 33, causing difficulty in rotating the output shaft of motor 31. Since the current of motor 31 is positively correlated with the resistance encountered when the output shaft of motor 31 rotates, the current of motor 31 will continuously increase. Therefore, when the current of motor 31 is greater than or equal to the first set current and the number of rotations is less than the set number of rotations, it indicates that there is an obstacle preventing the refrigerator inner compartment 2 from moving in the direction of the extended opening 11. Then, after controlling motor 31 to stop running for a first set time, the output shaft of motor 31 will be reversed.
[0096] During the process of motor 31 driving the first sliding member 32 to move along the directional direction from the initial limit position to the extended limit position, if it is determined that there is an obstruction preventing the refrigerator compartment 2 from moving along the directional direction towards the extended opening 11, the motor 31 is first controlled to stop running for a first set time to prevent the refrigerator compartment 2 from continuing to move along the directional direction towards the extended opening 11 and damaging or even destroying the obstruction and / or the refrigerator compartment 2. Specifically, the obstruction is usually an item on the vehicle and / or a part of the occupant's body. A part of the occupant's body is, for example, the occupant's hand or foot.
[0097] Therefore, by using this vehicle refrigerator control method to control the aforementioned vehicle refrigerator, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the directional protrusion opening 11, it is possible to accurately, efficiently, and stably determine whether there are any obstructions preventing the refrigerator compartment 2 from moving in the direction of the directional protrusion opening 11. Secondly, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the directional protrusion opening 11, when an obstruction is determined to exist, secondary damage or even damage to the obstruction and / or the refrigerator compartment 2 can be avoided, and the occupant can push and pull the refrigerator compartment 2 in the directional direction as needed, effectively improving the user comfort of the vehicle refrigerator.
[0098] Understandably, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the protruding opening 11, the output shaft of the motor 31 rotates around its own central axis in a first clockwise direction. If it encounters an obstacle, then after a first set time, the output shaft of the motor 31 rotates around its own central axis in a second clockwise direction.
[0099] If the number of rotations is greater than or equal to the set number of rotations, the output shaft of motor 31 will be reversed immediately after the motor 31 stops running.
[0100] In this embodiment, a second limit stop is provided on the sliding mounting base 4 at the end away from the motor 31 along the directional direction. When the first sliding member 32 moves along the directional direction towards the extension opening 11 until it abuts against the second limit stop, the first sliding member 32 is at the extension limit position. Therefore, it can be understood that during the process of the motor 31 driving the first sliding member 32 to move along the directional direction from the initial limit position to the extension limit position, if there is no obstruction applying a resistance force opposite to the movement direction of the refrigerator compartment 2 to the refrigerator compartment 2, then when the current of the motor 31 is greater than or equal to the first set current, the number of rotations will necessarily be greater than or equal to the set number of rotations. Therefore, if the current of the motor 31 is greater than or equal to the first set current, and the number of rotations is greater than or equal to the set number of rotations, it indicates that the first sliding member 32 has moved along the directional direction to the extension limit position. At this time, after the control motor 31 stops running, the output shaft of the control motor 31 is immediately reversed. This allows passengers to push and pull the refrigerator compartment 2 along the directional direction as needed, further improving the comfort of using the vehicle refrigerator.
[0101] As an alternative, if a second limit stop is not provided, when the number of rotations is greater than or equal to the set number of rotations, the output shaft of motor 31 will immediately reverse after stopping. This allows passengers to push and pull the refrigerator compartment 2 as needed, further improving the comfort of using the vehicle refrigerator.
[0102] Specifically, the first set duration is greater than or equal to 100ms.
[0103] Understandably, as the initial set duration increases, the duration of obstruction also increases. This is especially true when the obstruction is a localized part of the occupant's body, and this part is sandwiched between the refrigerator compartment 2 and the rear seat of the vehicle, which increases the occupant's pain duration. Specifically, when the initial set duration is 120ms, 130ms, 140ms, 150ms, 160ms, or 170ms, the problem of increased pain duration for the occupant is present.
[0104] Specifically, when the first set duration is 100ms, there will be a noticeable pause in the refrigerator compartment 2. This allows the occupant to easily perceive the pause in the refrigerator compartment 2, thus facilitating the occupant to push or pull the refrigerator compartment 2 in the desired direction after perceiving the pause.
[0105] Therefore, considering the duration of the occupant's pain and the pause in the occupant's perception of the refrigerator compartment 2, the preferred first setting duration is 100ms.
[0106] Specifically, the range of values for the first set duration and the preferred value of the first set duration were both obtained from extensive prior experiments. The first set current is an empirical current obtained from extensive prior experiments. The set number of rotations is an empirical number of rotations obtained from extensive prior experiments.
[0107] Specifically, in this embodiment, motor 31 is preferably a DC motor. This is less expensive than using an AC motor. Furthermore, the DC motor is a brushed DC motor. Brushed DC motors have good starting performance and speed regulation performance. As an alternative, motor 31 is a brushless DC motor. As yet another alternative, motor 31 is an AC motor. The specific structures of the AC motor, brushed DC motor, and brushless DC motor are all prior art and will not be described in detail here.
[0108] The vehicle-mounted refrigerator control method also includes:
[0109] like Figure 5 As shown, during the process of the motor 31 driving the first sliding member 32 to move along the direction of the retracted opening 11, it is determined in real time whether the current of the motor 31 is greater than or equal to the second set current; and whether the number of rotations of the output shaft of the motor 31 is greater than or equal to the set number of rotations.
[0110] If the current of motor 31 is greater than or equal to the second set current, and the number of rotations is less than the set number of rotations, then control motor 31 to stop running for the second set time and then control motor 31 to work, and the rotation direction of the output shaft of motor 31 remains unchanged.
[0111] It is understandable that the process of the motor 31 driving the first sliding member 32 to move along the direction of the retracted opening 11 includes both the process of the motor 31 driving the first sliding member 32 to move along the direction from the extended limit position to the initial limit position, and the process of the motor 31 driving the first sliding member 32 to move from a certain point between the initial limit position and the extended limit position to the initial limit position after the motor 31 stops running for a first set time.
[0112] It is understandable that during the movement of the first sliding member 32 in the direction of the retractable opening 11, the first sliding member 32 will move away from the refrigerator inner compartment 2 when there is no obstruction. Therefore, if the first sliding member 32 encounters resistance during this process, the resistance will all come from the force of the occupant pushing the refrigerator inner compartment 2 in the direction of the retractable opening 11 and pressing against the first sliding member 32.
[0113] Therefore, during the process of the first sliding member 32 moving in the direction of the retracted opening 11:
[0114] If a restraining force exists, it will be transmitted sequentially through the refrigerator inner compartment 2, the first sliding member 32, and the transmission rod 33 to the output shaft of the motor 31, making it difficult for the output shaft of the motor 31 to rotate. Since the current of the motor 31 is positively correlated with the resistance encountered when the output shaft of the motor 31 rotates, the current of the motor 31 will continuously increase. Therefore, when the current of the motor 31 is greater than or equal to the second set current, and the number of rotations is less than the set number of rotations, it indicates that a restraining force is preventing the first sliding member 32 from moving along the direction of the directional retracted opening 11. In this case, the motor 31 will stop running for a second set time before resuming operation, and the rotation direction of the output shaft of the motor 31 will remain unchanged.
[0115] When a resistance force is detected, the motor 31 is first stopped for a second set time to avoid mutual wear between the first sliding member 32 and the refrigerator inner compartment 2. This also serves as a reminder to the occupant that the first sliding member 32 has not yet returned to its original position and that the refrigerator inner compartment 2 can be pushed again later.
[0116] Once a resisting force is confirmed and motor 31 has stopped operating for a second set time, motor 31 is controlled to operate, and the rotation direction of the output shaft of motor 31 remains unchanged. That is, the output shaft of motor 31 continues to rotate in a second clockwise direction around its own central axis. This drives the first sliding member 32 to move towards its initial limit position. This facilitates the next electric drive to open the refrigerator compartment 2, and also facilitates the occupants to push and pull the refrigerator compartment 2 in a directional manner.
[0117] Therefore, by using this vehicle refrigerator control method to control the aforementioned vehicle refrigerator, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the retractable opening 11, it is possible to accurately, efficiently, and stably determine whether there is a clamping force hindering the movement of the first sliding member 32 in the direction of the retractable opening 11. Secondly, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the retractable opening 11, when a clamping force is determined, it can prevent the first sliding member 32 and the refrigerator inner compartment 2 from wearing each other, and can also remind the occupant that the first sliding member 32 has not yet returned to its original position, thereby improving the service life and safety of the vehicle refrigerator. Furthermore, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the retractable opening 11, when the first sliding member 32 reaches its initial limit position, it is convenient for the next electric drive to open the refrigerator inner compartment 2, and it is also convenient for the occupant to push and pull the refrigerator inner compartment 2 in the direction of the retractable opening 11, further improving the comfort of using the vehicle refrigerator.
[0118] Understandably, during the process of the motor 31 driving the first sliding member 32 to move in the direction of the retractable opening 11, the output shaft of the motor 31 rotates around its own central axis in a second clockwise direction. If there is a counteracting force, then after a second set time period, the output shaft of the motor 31 continues to rotate around its own central axis in a second clockwise direction.
[0119] If the current of motor 31 is greater than or equal to the second set current, and the number of rotations is greater than or equal to the set number of rotations, then control motor 31 to stop running.
[0120] During the movement of the first sliding member 32 along the direction of the retracted opening 11 driven by the motor 31, if there is no counteracting force, then when the current of the motor 31 is greater than or equal to the second set current, the number of rotations will necessarily be greater than or equal to the set number of rotations. Therefore, if the current of the motor 31 is greater than or equal to the second set current, and the number of rotations is greater than or equal to the set number of rotations, it indicates that the first sliding member 32 has moved to the initial limit position along the direction. At this time, the control motor 31 stops running. The output shaft of the motor 31 stops rotating to avoid energy consumption and to extend the service life of the motor 31.
[0121] As the motor 31 drives the first slider 32 to move along the direction of the retracted opening 11, the above steps are repeated until the first slider 32 moves to the initial limit position.
[0122] Specifically, the second set duration is greater than or equal to 1 second.
[0123] Understandably, as the second set duration increases, the pause duration of the first slider 32 will also increase. That is, when the second set duration is 2s, 3s, 4s, or 5s, the pause duration of the first slider 32 will increase.
[0124] Specifically, when the second set duration is 1 second, the occupant will feel a noticeable pause when pushing the refrigerator compartment 2 in the direction of the retractable opening 11. This allows the occupant to easily perceive the pause in the refrigerator compartment 2. Therefore, after perceiving the pause, the occupant can easily stop pushing the refrigerator compartment 2 in the direction of the retractable opening 11.
[0125] Therefore, considering the efficiency of the first slider 32 moving to its initial limit position, the occupant's perception of the pause in the refrigerator compartment 2, and the occupant's need to push the refrigerator compartment 2 along the direction towards the retractable opening 11, the second set duration is preferably 1 second.
[0126] Specifically, the range of values for the second set duration and the preferred value of the second set duration were both obtained from a large number of previous experiments. The second set current is an empirical current obtained from a large number of previous experiments.
[0127] Since the first sliding member 32 does not need to move other structures during its movement along the direction of the retracted opening 11, in this embodiment, it is preferable that the second set current is less than the first set current. This is to further reduce the energy consumption of the motor 31 and further improve the service life of the motor 31, the first sliding member 32, and the first limit stop member.
[0128] As an alternative, the second set current can also be set to be equal to the first set current.
[0129] To prevent the initial position of the first sliding member 32 from shifting along its orientation after multiple uses, the vehicle refrigerator control method further includes:
[0130] After the vehicle refrigerator is powered on, the control motor 31 drives the first sliding member 32 to move along the direction of the retracted opening 11. When the current of the motor 31 is greater than or equal to the second set current, the control motor 31 stops running. The first sliding member 32 is provided with a first limit limit member at its initial limit position, and the first sliding member 32 can abut against the first limit limit member along the direction.
[0131] After the vehicle is powered on, the output shaft of the control motor 31 rotates around its central axis in a second clockwise direction until the current of the motor 31 is greater than or equal to the second set current. When the current of the motor 31 is greater than or equal to the second set current, it indicates that the first sliding member 32 is pressed against the first limit stop member along the orientation. This effectively avoids the phenomenon that the initial position of the first sliding member 32 will shift along the orientation after multiple uses, and effectively ensures that the first sliding member 32 pushes the refrigerator inner compartment 2 a constant distance along the orientation towards the protruding opening 11 each time, thereby further improving the working performance of the vehicle refrigerator. It can be understood that the initial limit position is the same as the initial position.
[0132] Therefore, using this vehicle refrigerator control method can accurately, efficiently and stably control the vehicle refrigerator, effectively improving the working performance and user comfort of the vehicle refrigerator.
[0133] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A method for controlling a vehicle-mounted refrigerator, characterized in that, include: During the process of the motor (31) driving the first sliding member (32) to move in the direction of the directional extension opening (11), it is determined in real time whether the current of the motor (31) is greater than or equal to the first set current; and whether the number of rotations of the output shaft of the motor (31) is greater than or equal to the set number of rotations. If the current of the motor (31) is greater than or equal to the first set current, and the number of rotations is less than the set number of rotations, then the output shaft of the motor (31) is controlled to reverse after the motor (31) stops running for a first set time.
2. The vehicle-mounted refrigerator control method according to claim 1, characterized in that: If the number of rotations is greater than or equal to the set number of rotations, then after the motor (31) stops running, the output shaft of the motor (31) is immediately reversed.
3. The vehicle-mounted refrigerator control method according to claim 1, characterized in that, The first set duration is greater than or equal to 100ms.
4. The vehicle-mounted refrigerator control method according to claim 3, characterized in that, The first set duration is 100ms.
5. The vehicle-mounted refrigerator control method according to any one of claims 1-4, characterized in that, The vehicle-mounted refrigerator control method also includes: During the process of the motor (31) driving the first sliding member (32) to move along the direction of retracting into the opening (11), it is determined in real time whether the current of the motor (31) is greater than or equal to the second set current; and whether the number of rotations of the output shaft of the motor (31) is greater than or equal to the set number of rotations. If the current of the motor (31) is greater than or equal to the second set current, and the number of rotations is less than the set number of rotations, then the motor (31) is controlled to stop running for a second set time and then the motor (31) is controlled to work, and the rotation direction of the output shaft of the motor (31) remains unchanged.
6. The vehicle-mounted refrigerator control method according to claim 5, characterized in that, The second set duration is greater than or equal to 1 second.
7. The vehicle-mounted refrigerator control method according to claim 6, characterized in that, The second set duration is 1 second.
8. The vehicle-mounted refrigerator control method according to any one of claims 1-4, characterized in that, The vehicle-mounted refrigerator control method also includes: After the vehicle refrigerator is powered on, the motor (31) is controlled to drive the first sliding member (32) to move along the direction of the orientation into the opening (11); when the current of the motor (31) is greater than or equal to the second set current, the motor (31) is controlled to stop running; wherein, the first sliding member (32) is provided with a first limit limit member at the initial limit position, and the first sliding member (32) can abut against the first limit limit member along the orientation.
9. A vehicle-mounted refrigerator, characterized in that, The refrigerator includes a refrigerator frame (1), a refrigerator compartment (2), and a drive mechanism (3). The refrigerator compartment (2) is slidably disposed on the refrigerator frame (1) along a directional direction and can extend or retract into the opening (11) of the refrigerator frame (1). The drive mechanism (3) includes a motor (31) and a first sliding member (32). The motor (31) and the first sliding member (32) are connected in a transmission. The first sliding member (32) is slidably disposed on the refrigerator frame (1) along the directional direction. The first sliding member (32) can abut against the refrigerator compartment (2) and drive the refrigerator compartment (2) to move synchronously along the directional direction towards the direction of extending out of the opening (11). The refrigerator is used to execute the vehicle refrigerator control method according to any one of claims 1-8.
10. The vehicle-mounted refrigerator according to claim 9, characterized in that, The vehicle refrigerator also includes a sliding mounting base (4) fixedly connected to the refrigerator frame (1), and the first sliding member (32) is slidably connected to the sliding mounting base (4) along the orientation; The refrigerator frame (1) or the housing of the motor (31) or the sliding mounting base (4) is provided with a first limit limiting member. When the first sliding member (32) moves in the direction of retracting into the opening (11) along the orientation direction to abut against the first limit limiting member, the first sliding member (32) returns to the initial limit position.
11. The vehicle-mounted refrigerator according to claim 10, characterized in that, The refrigerator frame (1) or the sliding mounting base (4) is further provided with a second limit limiting member. The second limit limiting member is located away from the motor (31) relative to the first limit limiting member along the orientation. When the first sliding member (32) moves along the orientation to extend out of the opening (11) and comes into contact with the second limit limiting member, the first sliding member (32) moves to the extended limit position.
12. The vehicle-mounted refrigerator according to claim 9, characterized in that, The drive mechanism (3) also includes a Hall sensor, which is used to monitor the number of rotations of the output shaft of the motor (31) around its own central axis.
13. A vehicle, characterized in that, Includes the vehicle refrigerator as described in any one of claims 9-12.