Transmission mechanism and vehicle-mounted refrigerator

Abstract

The utility model provides a transmission mechanism and a vehicle-mounted refrigerator, the transmission mechanism comprises a fixed support, a driving motor and a transfer assembly in transmission connection with an output shaft of the driving motor, and the fixed support is provided with a positioning structure used for fixedly installing the driving motor and the transfer assembly. The axis of the driving motor and the axis of the transferring assembly are coaxially arranged on the fixing support through a positioning structure. The fixing support is further provided with a damping structure used for absorbing vibration generated by the driving motor and the transferring assembly. Specifically, according to the transmission mechanism, the driving motor and the transferring assembly are integrated into one through the fixing support, and modular arrangement is formed; the positioning structure ensures that the driving motor and the transferring assembly are coaxially arranged on the fixing support, it is ensured that an output shaft of the driving motor can stably transmit power to the transferring assembly, and the problem of deviation or vibration caused by asymmetric installation is avoided; the damping structure effectively reduces vibration transmission generated during operation of the driving motor and the transfer assembly, and the stability of the transmission mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to a transmission mechanism and a vehicle-mounted refrigerator. Background Art

[0002] In the early days of installing refrigerators in cars, the industry typically adopted top-opening doors. This was primarily due to the unique operating environments of cars, which placed greater emphasis on safety during driving. For example, during acceleration or sudden braking, the door of a car refrigerator must not pop open or impact, potentially causing injury. As people's demands for a better quality of life increase, automatic door opening is becoming more of a consideration, leading to the emergence of drawer-style automatic door openings. While adding handles to furniture drawers is a natural option, adding door handles to car refrigerators can easily injure passengers.

[0003] Chinese patent document No. CN218442923U disclosed in 2023 a screw-driven pull-out vehicle refrigerator, which specifically discloses a vehicle refrigerator body, a refrigeration cavity and an installation cavity located on the periphery of the refrigeration cavity are provided on the vehicle refrigerator body, a through hole is provided on the rear side wall of the refrigeration cavity to pass through the installation cavity, an opening is provided on the front face of the vehicle refrigerator body to communicate with the refrigeration cavity, an end cover is provided on the vehicle refrigerator body to cover the opening, and a steam generator is provided on the vehicle refrigerator body for cooling the refrigeration cavity. The evaporator and the compressor and condenser connected to the evaporator; the pull-out drawer, the pull-out drawer is arranged in the refrigeration cavity and can move forward and backward relative to the refrigeration cavity; the drive motor, the drive motor is arranged in the installation cavity and is located at the rear end of the refrigeration cavity; the fixed seat, the fixed seat is arranged on the inner wall of the refrigeration cavity, and a screw is pivotally connected to the fixed seat, and the screw can rotate on the fixed seat, and the end of the screw passes through the conducting hole and is connected to the output end of the drive motor; the movable seat, the movable seat is installed on the pull-out drawer, and a drive threaded hole screwed to the screw is provided on the movable seat. In the above-mentioned disclosed patent documents, the drive motor, the screw and the movable seat need to be separately assembled on the main body of the vehicle refrigerator, resulting in complicated assembly, low production efficiency and high production cost, and also affecting the installation accuracy of the drive motor, the screw and the movable seat, and there is a certain amount of vibration and friction noise.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a transmission mechanism and a car refrigerator to overcome the shortcomings of the existing technology. The transmission mechanism can realize modular assembly, improve production and assembly efficiency and accuracy, effectively reduce costs, and ensure the coaxiality between the components to reduce vibration and noise.

[0006] A transmission mechanism designed for this purpose includes a fixed bracket, a drive motor, and a transfer assembly that is transmission-connected to the output shaft of the drive motor. The fixed bracket is provided with a positioning structure for fixedly installing the drive motor and the transfer assembly, and the axes of the drive motor and the transfer assembly are coaxially arranged on the fixed bracket through the positioning structure; the fixed bracket is also provided with a shock-absorbing structure for absorbing vibrations generated by the drive motor and the transfer assembly.

[0007] The positioning structure includes a first installation area for installing the drive motor, the first installation area is provided with a fixing seat matching the drive motor, and at least a part of the drive motor is located on the fixing seat; the fixing bracket is integrally manufactured from at least nylon and glass fiber materials.

[0008] The positioning structure also includes a second installation area for installing the transfer assembly, the transfer assembly includes a coupling and a bearing, and the second installation area is provided with a positioning portion for installing the coupling and the bearing, the coupling and the bearing are located on the positioning portion and the output shaft of the drive motor is connected to one end of the coupling.

[0009] The transfer assembly also includes a transmission screw, and a guide portion is further provided on the second installation area. A slide groove is provided on the guide portion, and the transmission screw is located on the slide groove. The bearing is cooperatively connected with one end of the transmission screw, and one end of the transmission screw is transmission-connected with the other end of the coupling; the transmission screw is at least made of metal material.

[0010] The transfer assembly further includes a sleeve connected to the other end of the transmission screw, a positioning seat is provided on the guide portion, and a buckle is provided on the sleeve, and the sleeve is mounted on the positioning seat through the buckle;

[0011] The axes of the output shaft of the driving motor, the coupling, the bearing, the transmission screw and the sleeve are coaxially arranged on the fixing bracket.

[0012] The shock-absorbing structure includes a first shock-absorbing member and a second shock-absorbing member, the first shock-absorbing member is arranged on the front end of the fixed bracket, and the second shock-absorbing member is arranged on the rear end of the fixed bracket. The outer peripheral edge of the fixed seat is provided with a plurality of connecting parts, and the connecting parts are provided with through holes, and the first shock-absorbing member is installed on the through holes; the fixed bracket is provided with a recess, and the second shock-absorbing member is installed on the recess.

[0013] The transfer assembly also includes a sliding block connected to the transmission screw, and when the transmission screw rotates, the sliding block is driven to slide horizontally on the guide part. A guide structure is provided between the sliding block and the guide part, and the guide structure includes a guide rib and a guide groove. The guide rib is provided on the guide part, and the guide groove is provided on the sliding block. The guide part slides on the guide rib of the guide part through the guide groove; the sliding block is made of at least POM material.

[0014] The sliding block is provided with an anti-collision gasket, and the sliding block is provided with a supporting portion extending upward, and the anti-collision gasket is arranged on the supporting portion.

[0015] The fixing bracket is further provided with a sealing structure, the sealing structure comprising a sealing member, the sealing member is provided with an opening, and the sealing member is sleeved on the positioning portion through the opening;

[0016] The sealing member includes a flange and a sealing portion, wherein the flange is in sealing contact with the fixing bracket; the sealing portion wraps around the positioning portion, and a positioning groove is provided on the sealing portion, through which the sealing portion is sealed and matched with the guide portion; the sealing portion is conical or square in shape.

[0017] A vehicle-mounted refrigerator comprises a vehicle-mounted refrigerator body and a drawer arranged on the vehicle-mounted refrigerator body. The vehicle-mounted refrigerator body is provided with a lock and a transmission mechanism for pushing the lock and the drawer.

[0018] The transmission mechanism and vehicle refrigerator of the above embodiment have the following advantages compared with the prior art:

[0019] The transmission mechanism includes a fixed bracket, a drive motor, and a transfer assembly connected to the output shaft of the drive motor. The fixed bracket is provided with a positioning structure for fixing the drive motor and transfer assembly. The axes of the drive motor and transfer assembly are coaxially arranged on the fixed bracket through the positioning structure. The fixed bracket is also provided with a shock-absorbing structure for absorbing vibrations generated by the drive motor and transfer assembly. Specifically, the transmission mechanism integrates the drive motor and transfer assembly into one through the fixed bracket, forming a modular configuration. The positioning structure ensures the coaxial arrangement of the drive motor and transfer assembly on the fixed bracket, ensuring that the output shaft of the drive motor can smoothly transmit power to the transfer assembly, avoiding offset or vibration problems caused by asymmetric installation. The shock-absorbing structure effectively reduces the vibration transmission generated by the drive motor and transfer assembly during operation, further improving the stability of the transmission mechanism.

[0020] The axes of the drive motor's output shaft, coupling, bearing, drive screw, and sleeve are coaxially arranged on a fixed bracket. Specifically, this coaxial arrangement ensures that the drive motor's output shaft, coupling, bearing, drive screw, and sleeve are all coaxial during operation, reducing eccentricity or axial misalignment between the various components and ensuring smooth power transmission.

[0021] The transfer assembly also includes a sliding block coupled to the drive screw. When the drive screw rotates, the sliding block slides horizontally on the guide portion. A guide structure is provided between the sliding block and the guide portion. The guide structure includes guide ribs and guide grooves. The guide ribs are provided on the guide portion, and the guide grooves are provided on the sliding block. The guide portion slides on the guide ribs of the guide portion via the guide grooves. Specifically, when the drive screw is rotated by the drive motor, the rotational motion of the drive screw is converted into linear motion by the sliding block. Guided by the guide ribs, the sliding block slides along the guide portion via the guide grooves. This prevents the sliding block from deflecting or shaking during movement, maintaining a precise motion path. This ensures that the motion generated by the drive screw is smoothly converted into linear motion of the drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the transmission mechanism in one embodiment of the present utility model.

[0025] Figure 2 This is a cross-sectional view of the overall structure of the transmission mechanism in one embodiment of the present utility model.

[0026] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0027] Figure 4 for Figure 2 Enlarged view of part B in the middle.

[0028] Figure 5 This is an exploded view of the overall structure of the transmission mechanism in one embodiment of the present utility model.

[0029] Figure 6This is a schematic diagram of the fixing bracket structure in one embodiment of the present utility model.

[0030] Figure 7 This is a schematic diagram of the sealing structure in one embodiment of the present invention.

[0031] Figure 8 This is a cross-sectional view of the assembly structure of the transmission screw and the sliding block in one embodiment of the present utility model.

[0032] Figure 9 This is a schematic structural diagram of a sliding block and an anti-collision gasket in one embodiment of the present invention.

[0033] Figure 10 This is a cross-sectional view of the assembly structure of the sliding block and the anti-collision gasket in one embodiment of the present invention.

[0034] Figure 11 This is a schematic diagram of the assembly structure of a vehicle refrigerator and a transmission mechanism in one embodiment of the present utility model. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figure 1-Figure 5 As shown, a transmission mechanism and a vehicle-mounted refrigerator are provided. The transmission mechanism includes a fixed bracket 1, a drive motor 2, and a transfer assembly 3 that is transmission-connected to the output shaft of the drive motor 2. The fixed bracket 1 is provided with a positioning structure for fixedly installing the drive motor 2 and the transfer assembly 3. The axes of the drive motor 2 and the transfer assembly 3 are coaxially arranged on the fixed bracket 1 through the positioning structure; the fixed bracket 1 is also provided with a shock-absorbing structure 4 for absorbing vibrations generated by the drive motor 2 and the transfer assembly 3.

[0037] Specifically, the transmission mechanism integrates the drive motor 2 and the transfer assembly 3 into one through the fixed bracket 1 to form a modular setting; the positioning structure ensures the coaxial setting of the drive motor 2 and the transfer assembly 3 on the fixed bracket 1, ensuring that the output shaft of the drive motor 2 can smoothly transmit power to the transfer assembly 3, avoiding the offset or vibration problems caused by asymmetric installation; the shock-absorbing structure 4 effectively reduces the vibration transmission generated by the drive motor 2 and the transfer assembly 3 during operation, further improving the stability of the transmission mechanism.

[0038] Further, if Figure 1 、 Figure 5 and Figure 6 As shown, the positioning structure includes a first installation area 101 for installing the drive motor 2 . A fixing seat 1011 matching the drive motor 2 is provided on the first installation area 101 , and at least a portion of the drive motor 2 is located on the fixing seat 1011 .

[0039] Specifically, the fixing seat 1011 matches the structure of the drive motor 2, ensuring that the drive motor 2 can be firmly mounted on the fixing bracket 1, and ensuring that the output shaft of the drive motor 2 and the transmission shaft of the transfer assembly 3 are on the same axis, ensuring the coaxial setting of the transmission mechanism.

[0040] Further, if Figure 1 、 Figure 5 and Figure 6 As shown, the positioning structure also includes a second installation area 102 for installing the transfer assembly 3, the transfer assembly 3 includes a coupling 301 and a bearing 302, and a positioning portion 1021 for installing the coupling 301 and the bearing 302 is provided on the second installation area 102. The coupling 301 and the bearing 302 are located on the positioning portion 1021 and the output shaft of the drive motor 2 is connected to one end of the coupling 301.

[0041] Specifically, the positioning portion 1021 ensures that both the coupling 301 and the bearing 302 can be securely and precisely mounted on the fixed bracket 1, thereby ensuring that the output shaft of the drive motor 2 is connected to one end of the coupling 301 on the same axis; wherein, the coupling 301 is used to transmit the rotational motion of the output shaft of the drive motor 2 to the transmission screw 303, and ensure the reliability and stability of power transmission; the bearing 302 is used to support the transmission screw 303 to reduce friction.

[0042] Further, if Figure 3 and Figure 5 As shown, the transfer assembly 3 also includes a transmission screw 303, and a guide portion 1022 is also provided on the second installation area 102, and a slide groove 1023 is provided on the guide portion 1022. The transmission screw 303 is located on the slide groove 1023, and the bearing 302 is cooperatively connected to one end of the transmission screw 303, and one end of the transmission screw 303 is transmission-connected to the other end of the coupling 301.

[0043] Specifically, the transmission screw 303 can efficiently convert the rotational power of the drive motor 2 into linear power. A guide portion 1022 is provided on the second installation area 102, on which a slide groove 1023 is opened. The transmission screw 303 is located in the slide groove 1023. The setting of the slide groove 1023 ensures the fixation and guidance of the transmission screw 303, so that the transmission screw 303 remains on the correct motion trajectory during rotation to prevent deviation or shaking.

[0044] Further, if Figure 3 and Figure 5 As shown, there is a clearance fit between the transmission screw 303 and the bearing 302, which can effectively control the rotation friction noise and the vibration caused by the vibration of the transmission screw 303.

[0045] Furthermore, the fixing bracket 1 is integrally formed of at least nylon and glass fiber materials. The fixing bracket 1 is integrally formed of nylon + glass fiber materials, and the straightness of its slide groove 1023 is precisely controlled, thereby reducing friction resistance during sliding.

[0046] Furthermore, the drive screw 303 is at least partially made of metal. Specifically, it is made of stainless steel 301, with a surface finish of 0.2 μm, significantly reducing frictional resistance. Each rotation of the drive motor 2 produces a 4 mm lead for the screw 303, effectively controlling the relationship between speed and stroke. The speed also affects operating noise.

[0047] Furthermore, the transmission screw 303 has a trapezoidal thread around its circumference.

[0048] Further, if Figure 4 and Figure 5 As shown, the transfer assembly 3 also includes a sleeve 5 connected to the other end of the transmission screw 303 , a positioning seat 1024 is provided on the guide portion 1022 , a buckle 501 is provided on the sleeve 5 , and the sleeve 5 is installed on the positioning seat 1024 via the buckle 501 .

[0049] Specifically, the other end of the transmission screw 303 is connected to the shaft sleeve 5 through the shaft sleeve 5, which serves to fix and support the end of the transmission screw 303, ensuring that the transmission screw 303 remains stable and moves precisely along the specified path during rotation without deviation or shaking; the shaft sleeve 5 can be firmly fixed on the positioning seat 1024 through the buckle 501.

[0050] Further, if Figure 2 and Figure 5 As shown, the output shaft of the drive motor 2 , the coupling 301 , the bearing 302 , the transmission screw 303 and the axis of the sleeve 5 are coaxially arranged on the fixed bracket 1 .

[0051] Specifically, the coaxial arrangement enables the output shaft of the drive motor 2, the coupling 301, the bearing 302, the transmission screw 303 and the sleeve 5 to be coaxial during operation, reducing the eccentricity or axial misalignment between the various components and ensuring the smoothness of power transmission.

[0052] Further, if Figure 1 and Figure 5As shown, the shock absorbing structure 4 includes a first shock absorbing member 401 and a second shock absorbing member 402. The first shock absorbing member 401 is arranged on the front end of the fixed bracket 1, and the second shock absorbing member 402 is arranged on the rear end of the fixed bracket 1. The outer peripheral edge of the fixed seat 1011 is provided with a plurality of connecting parts 1012, and the connecting parts 1012 are provided with through holes 10121. The first shock absorbing member 401 is installed on the through holes 10121; the fixed bracket 1 is provided with a recess 103, and the second shock absorbing member 402 is installed on the recess 103.

[0053] Specifically, the first shock absorber 401 is installed at the front end of the fixed bracket 1, which can effectively absorb the vibration generated by the drive motor 2 and prevent the vibration from being transmitted to the entire fixed bracket 1; the second shock absorber 402 is installed at the rear end of the fixed bracket 1, which can effectively absorb the vibration of the transmission screw 303 during operation; by respectively arranging the first shock absorber 401 and the second shock absorber 402 at the front and rear ends of the fixed bracket 1, the entire transmission mechanism can fully absorb and buffer vibrations from different parts during operation.

[0054] Further, if Figure 5 and Figure 8 As shown, the transfer assembly 3 also includes a sliding block 304 that is connected to the transmission screw 303. When the transmission screw 303 rotates, it drives the sliding block 304 to slide horizontally on the guide portion 1022. A guide structure is provided between the sliding block and the guide portion 1022. The guide structure includes a guide rib 10221 and a guide groove 3041. The guide rib 10221 is provided on the guide portion 1022, and the guide groove 3041 is provided on the sliding block 304. The guide portion 1022 slides on the guide rib 10221 of the guide portion 1022 through the guide groove 3041.

[0055] Specifically, when the transmission screw 303 is driven to rotate by the drive motor 2, the rotational motion of the transmission screw 303 is converted into linear motion through the sliding block 304. Under the guidance of the guide rib 10221, the sliding block 304 slides along the guide portion 1022 through the guide groove 3041, so that the sliding block 304 does not deviate or shake during the movement, and maintains a precise motion path, thereby ensuring that the movement generated by the transmission screw 303 can be smoothly converted into the linear movement of the drawer 10.

[0056] It should be noted that the threaded connection between the sliding block 304 and the transmission screw 303 converts the rotational motion into a linear sliding motion, and slides smoothly on the guide portion 1022 .

[0057] Furthermore, the sliding block 304 is at least formed of POM material. Specifically, this material has excellent self-lubrication and wear resistance, with a surface finish controlled within 0.8 μm. It should be noted that the self-lubricating properties of POM further reduce noise during operation, extend the service life of the component, and reduce the increase in noise caused by wear.

[0058] Furthermore, friction noise mainly comes from the contact friction between the various components in the transmission system. In order to reduce friction noise, the transmission screw 303 is made of stainless steel 301, and its surface finish is controlled at 0.2μm, which greatly reduces friction resistance; the fixed bracket 1 is made of nylon + glass fiber material in one piece, and the straightness of its slide groove 1023 is precisely controlled to reduce friction resistance during sliding; the sliding block 304 is made of wear-resistant POM (polyoxymethylene) material, which has good self-lubrication and wear resistance, and the surface finish is controlled within 0.8μm; it should be pointed out that the self-lubricating properties of POM material further reduce the noise during operation, extend the service life of the components, and reduce the increase in noise caused by wear.

[0059] Further, if Figure 3 、 Figure 9 and Figure 10 As shown, an anti-collision gasket 7 is provided on the sliding block 304 , and an upwardly extending support portion 3042 is provided on the sliding block 304 , and the anti-collision gasket 7 is provided on the support portion 3042 .

[0060] Specifically, the anti-collision gasket 7 is mainly used to absorb and alleviate the impact force that may be generated by the sliding block 304 during movement; the setting of the support part 3042 provides space and support for installing the anti-collision gasket 7; when the transmission screw 303 drives the sliding block 304 to move, the sliding block 304 slides on the guide part 1022, and the sliding block 304 contacts the end of the guide part 1022 or other obstacles. The anti-collision gasket 7 can avoid direct collision between the sliding block 304 and other components.

[0061] Further, if Figure 3 and Figure 7 As shown, a sealing structure is further provided on the fixing bracket 1 , and the sealing structure includes a sealing member 8 , and an opening 801 is provided on the sealing member 8 . The sealing member 8 is sleeved on the positioning portion 1021 through the opening 801 .

[0062] Specifically, the sealing structure is used to prevent dust, moisture or other external contaminants from entering the interior of the transmission mechanism, thereby extending the service life of the parts.

[0063] Further, if Figure 3 and Figure 7As shown, the sealing member 8 includes a flange 802 and a sealing portion 803, the flange 802 is in sealing contact with the fixing bracket 1; the sealing portion 803 wraps around the positioning portion 1021, and a positioning groove 8031 ​​is provided on the sealing portion 803, and the sealing portion 803 is sealed with the guide portion 1022 through the positioning groove 8031; the sealing portion 803 is conical or square in shape.

[0064] Specifically, the flange 802 ensures a tight connection between the seal and the fixed bracket 1; the positioning groove 8031 ​​on the sealing part 803 is used to seal with the guide part 1022, ensuring that the sealing part 803 can be tightly attached to the guide part 1022, further enhancing the sealing effect; the sealing part 803 is set to be conical or square, which can provide a better sealing compression effect, and is suitable for applications requiring precise sealing.

[0065] It should be noted that the sealing portion 803 can be selected in different shapes according to specific application requirements.

[0066] like Figure 11 As shown, a vehicle refrigerator includes a vehicle refrigerator body 9 and a drawer 10 arranged on the vehicle refrigerator body 9. The vehicle refrigerator body 9 is provided with a lock 901 and a transmission mechanism for pushing the lock 901 and the drawer 10.

[0067] Specifically, the lock catch 901 is a device for fixing the drawer 10 to prevent the drawer from accidentally sliding out due to vibration during the driving process of the vehicle. The output shaft of the drive motor 2 is connected to the transmission screw 303 through the coupling 301, and the drive screw rotates; as the transmission screw 303 rotates, the sliding block 304 moves smoothly on the guide portion 1022, pushing the drawer 10 to open. Through the stable speed control of the drive motor 2, the transmission screw 303 rotates one circle, and the sliding block 304 moves forward 4mm. The sliding block 304 slides along the guide portion 1022, thereby pushing the lock catch 901 to unlock, so that the drawer 10 The drawer 10 is opened by sliding along the vehicle refrigerator body 9. When the drawer 10 is opened to 65 mm, it immediately reverses and returns to its original position, ensuring that the translation slider 304 can return to its original position quickly, providing good conditions for the user to manually close the drawer 10. On the one hand, automatic door opening reduces the user's operating steps and improves the convenience of use; on the other hand, manually closing the drawer 10 conforms to the operating habits of most users and gives the user a more direct control experience. Since the drive motor 2 has returned to its original position in advance, the manual closing process becomes smoother and there will be no conflict between the drive motor 2 and the manual operation.

[0068] The arrangement of the first shock absorber 401 and the second shock absorber 402 allows the drive motor 2 and the transmission screw 303 to absorb and buffer possible vibrations during operation, reducing the possibility of vibrations being transmitted to the vehicle refrigerator body 7, thereby improving the stability of the system and user experience.

[0069] It should be pointed out that a Hall switch for detecting the drive motor 2 or the transmission screw 303 is provided inside the drive motor 2 or near the drive motor 2. When the drive motor 2 is started, the Hall switch will generate a corresponding pulse signal according to the rotation of the drive motor 2. The pulse signal corresponds to the number of revolutions of the drive motor 2. By counting these signals through the control system, the distance moved by the translation slider 304 can be accurately determined. When the drawer 10 is opened to 65 mm, the Hall switch detects that the drive motor 2 has rotated a predetermined number of revolutions. The control system determines that the sliding block 304 has reached the specified position and then issues an instruction to stop the forward rotation of the drive motor 2 and start the reverse rotation. When retracting, the current change of the drive motor 2 is monitored by the stall detection to determine whether the translation slider 304 has returned to the initial position, ensuring that the drive motor 2 can be correctly reset after the operation is completed, providing a guarantee for the next operation.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In this utility model, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0074] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0075] It should also be understood that when explaining the connection relationship or positional relationship of elements, even if not explicitly described, the connection relationship and positional relationship should be interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, which is not limited here.

[0076] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A transmission mechanism, characterized in that: The invention comprises a fixed bracket (1), a driving motor (2), and a transfer assembly (3) connected to the output shaft of the driving motor (2); the fixed bracket (1) is provided with a positioning structure for fixing the driving motor (2) and the transfer assembly (3); the axes of the driving motor (2) and the transfer assembly (3) are coaxially arranged on the fixed bracket (1) through the positioning structure; and the fixed bracket (1) is also provided with a shock-absorbing structure (4) for absorbing vibrations generated by the driving motor (2) and the transfer assembly (3).

2. The transmission mechanism according to claim 1, wherein: The positioning structure comprises a first mounting area (101) for mounting the drive motor (2); a fixing seat (1011) matching the drive motor (2) is provided on the first mounting area (101); at least a portion of the drive motor (2) is located on the fixing seat (1011); and the fixing bracket (1) is integrally formed of at least nylon and glass fiber materials.

3. The transmission mechanism according to claim 1, wherein: The positioning structure further comprises a second mounting area (102) for mounting the transfer assembly (3), the transfer assembly (3) comprising a coupling (301) and a bearing (302), a positioning portion (1021) for mounting the coupling (301) and the bearing (302) being provided on the second mounting area (102), the coupling (301) and the bearing (302) being located on the positioning portion (1021), and the output shaft of the drive motor (2) being connected to one end of the coupling (301).

4. The transmission mechanism according to claim 3, characterized in that: The transfer assembly (3) further comprises a transmission screw (303), a guide portion (1022) is further provided on the second installation area (102), a slide groove (1023) is provided on the guide portion (1022), the transmission screw (303) is located on the slide groove (1023), the bearing (302) is cooperatively connected to one end of the transmission screw (303), and one end of the transmission screw (303) is transmission-connected to the other end of the coupling (301); the transmission screw (303) is at least manufactured from a metal material.

5. The transmission mechanism according to claim 4, characterized in that: The transfer assembly (3) further comprises a shaft sleeve (5) connected to the other end of the transmission screw (303); a positioning seat (1024) is provided on the guide portion (1022); a buckle (501) is provided on the shaft sleeve (5); and the shaft sleeve (5) is mounted on the positioning seat (1024) via the buckle (501); The axes of the output shaft of the drive motor (2), the coupling (301), the bearing (302), the transmission screw (303) and the shaft sleeve (5) are coaxially arranged on the fixed bracket (1).

6. The transmission mechanism according to claim 2, characterized in that: The shock absorbing structure (4) comprises a first shock absorbing member (401) and a second shock absorbing member (402), wherein the first shock absorbing member (401) is arranged on the front end of the fixing bracket (1), and the second shock absorbing member (402) is arranged on the rear end of the fixing bracket (1); a plurality of connecting portions (1012) are provided on the outer peripheral edge of the fixing seat (1011), and a through hole (10121) is provided on the connecting portion (1012), and the first shock absorbing member (401) is mounted on the through hole (10121); a recess (103) is provided on the fixing bracket (1), and the second shock absorbing member (402) is mounted on the recess (103).

7. The transmission mechanism according to claim 4, characterized in that: The transfer assembly (3) further comprises a sliding block (304) coupled to the transmission screw (303); when the transmission screw (303) rotates, the sliding block (304) is driven to slide horizontally on the guide portion (1022); a guide structure is provided between the sliding block and the guide portion (1022); the guide structure comprises a guide rib (10221) and a guide groove (3041); the guide rib (10221) is provided on the guide portion (1022); the guide groove (3041) is provided on the sliding block (304); the guide portion (1022) slides on the guide rib (10221) of the guide portion (1022) via the guide groove (3041); and the sliding block (304) is manufactured from at least POM material.

8. The transmission mechanism according to claim 7, characterized in that: An anti-collision gasket (7) is provided on the sliding block (304), a support portion (3042) extending upward is provided on the sliding block (304), and the anti-collision gasket (7) is provided on the support portion (3042).

9. The transmission mechanism according to claim 4, characterized in that: The fixing bracket (1) is further provided with a sealing structure, the sealing structure comprising a sealing member (8), the sealing member (8) being provided with an opening (801), and the sealing member (8) being sleeved on the positioning portion (1021) through the opening (801); The sealing member (8) comprises a flange (802) and a sealing portion (803), wherein the flange (802) is in sealing contact with the fixing bracket (1); the sealing portion (803) wraps around the positioning portion (1021), a positioning groove (8031) is provided on the sealing portion (803), and the sealing portion (803) is in sealing cooperation with the guide portion (1022) via the positioning groove (8031); the sealing portion (803) is in a conical shape or a square shape.

10. A vehicle refrigerator, comprising a vehicle refrigerator body (9) and a drawer (10) arranged on the vehicle refrigerator body (9), characterized in that: The vehicle refrigerator body (9) is provided with a lock (901) and a transmission mechanism according to any one of claims 1 to 9 for pushing the lock (901) and the drawer (10).

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