Damping rotating device for vehicle-mounted screen

Abstract

The utility model relates to a damping rotation device used for a vehicle-mounted screen, which comprises a shell, a motor, a transmission assembly and an output main shaft, the motor drives the output main shaft through the transmission assembly, the motor and the transmission assembly are both installed in the shell, one end of the output main shaft is exposed outside the shell and used for being connected with a movable device, and the other end of the output main shaft is connected with a motor. The output main shaft is sleeved with a damping sleeve, the damping sleeve is fixedly arranged in the shell, when the motor works, the output main shaft rotates relative to the damping sleeve, and when the motor stops working, the damping sleeve tightly holds the output main shaft so as to prevent the output main shaft from freely deflecting. The enclasping force between the damping sleeve and the output main shaft is smaller than the driving force of the motor, so that the motor can transmit the output main shaft through the transmission assembly to overcome the enclasping force to rotate, and the enclasping force can play a role in fixing the output main shaft when the motor does not work. And free rotation of the output main shaft due to external force or transmission assembly clearance is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating devices, in particular to a damping rotating device for a vehicle-mounted screen. Background Art

[0002] With the advancement of science and technology and the growing development of social life, there are more and more scenarios where movable devices are mounted on movable vehicles, such as a large central control screen on a car. At the beginning, most of the large central control screens were fixed installation structures, and later gradually developed into manual rotation and electric rotation structures. The application structure is becoming more and more intelligent. Generally, movable devices achieve electric rotation through a rotating device, but since electric rotation requires power to be transmitted through a motor and a transmission component, there are many assembly gaps between parts during the transmission process. This gap is sensitive to vibration when the device is not working, and is prone to shaking and abnormal noise. In particular, the larger the mass of the screen, the more obvious the shaking, which makes the screen unstable, leaves users with an impression of poor texture and reduces the experience. How to prevent the rotating device from deflecting freely is a problem that needs to be solved urgently. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a damping rotation device for a vehicle-mounted screen, which has good stability and can prevent free deflection.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a damping rotation device for a vehicle-mounted screen, comprising a shell, a motor, a transmission assembly and an output spindle, the motor transmits the output spindle through the transmission assembly, the motor and the transmission assembly are both installed in the shell, one end of the output spindle is exposed outside the shell for connecting to a movable device, a damping sleeve is provided on the output spindle, and the damping sleeve is fixed in the shell, when the motor is working, the output spindle rotates relative to the damping sleeve, when the motor stops working, the damping sleeve holds the output spindle to prevent the output spindle from freely deflecting.

[0005] Furthermore, the damping sleeve is a PEEK damping sleeve, and the PEEK damping sleeve is interference fit with the output spindle.

[0006] Furthermore, a plurality of oil grooves arranged at equal intervals are provided on the inner wall of the damping sleeve in contact with the output main shaft.

[0007] Furthermore, at least two locking parts are provided on the outer wall of the damping sleeve, and a locking groove for the locking parts to be engaged is provided in the outer shell.

[0008] Furthermore, the upper end of the output main shaft is connected to an upper bearing, the lower end of the output main shaft is connected to a lower bearing, and the housing is provided with an upper bearing mounting position and a lower bearing mounting position.

[0009] Furthermore, a rubber ring is provided at the connection between the output main shaft and the lower bearing, and a ring groove for installing the rubber ring is provided on the output main shaft.

[0010] Furthermore, the output main shaft is provided with a first stop surface matched with the upper bearing, a second stop surface matched with the lower bearing, and a third stop surface matched with the damping sleeve.

[0011] Furthermore, the transmission assembly includes a worm, a first-stage turbine meshing with the worm, a second-stage gear meshing with the first-stage turbine, a third-stage gear meshing with the second-stage gear, and a fourth-stage gear meshing with the third-stage gear. The output end of the motor is connected to the worm, and the fourth-stage gear is sleeved on the output main shaft and drives the output main shaft to rotate synchronously.

[0012] Furthermore, the housing is provided with a motor mounting position for mounting the motor, a worm mounting position for mounting the worm, a first mounting position for mounting a first-stage turbine, a second mounting position for mounting a second-stage gear, a third mounting position for mounting a third-stage gear, and a fourth mounting position for mounting an output main shaft.

[0013] Furthermore, the shell includes a base and an upper cover covering the base.

[0014] Compared with the prior art, the advantages of the utility model are: the utility model arranges a damping sleeve on the output spindle, and the damping sleeve is fixed to the outer shell. The clamping force between the damping sleeve and the output spindle is less than the driving force of the motor, so that the motor can transmit the output spindle through the transmission assembly to overcome the clamping force and rotate, and the clamping force can fix the output spindle when the motor is not working, preventing the output spindle from rotating freely due to external force or transmission assembly gap and other problems, which can effectively avoid abnormal noise due to shaking, improve the texture, and improve the rotation accuracy and stability of the whole device. Moreover, the overall structure is simple, the assembly parts are few, and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when the upper cover is disassembled;

[0019] Figure 3 It is an exploded view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the utility model along the axial direction of the output main shaft;

[0021] Figure 5 This is a schematic diagram of the structure of the output spindle of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the upper cover of the utility model;

[0023] As shown in the figure, 1 housing, 1a base, 1b upper cover, 1.1 slot, 1.2 upper bearing mounting position, 1.3 lower bearing mounting position, 1.4 motor mounting position, 1.5 worm mounting position, 1.6 first mounting position, 1.7 second mounting position, 1.8 third mounting position, 1.9 fourth mounting position, 2 motor, 3 transmission assembly, 3.1 worm, 3.2 first-stage turbine, 3.3 second-stage gear, 3.4 third-stage gear, 3.5 fourth-stage gear, 4 output main shaft, 4.1 ring groove, 4.2 first gear joint, 4.3 second gear joint, 4.4 third gear joint, 5 damping sleeve, 5.1 oil groove, 5.2 slot, 6 upper bearing, 7 lower bearing, 8 rubber ring. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with specific implementation methods.

[0025] 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, which indicate orientations or positional relationships, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figure 1-6As shown, a damping rotation device for a vehicle-mounted screen includes a housing 1, a motor 2, a transmission assembly 3 and an output spindle 4. The motor 2 transmits the output spindle 4 through the transmission assembly 3. The motor 2 and the transmission assembly 3 are both installed in the housing 1. One end of the output spindle 4 is exposed outside the housing 1 for connecting a movable device. A damping sleeve 5 is sleeved on the output spindle 4, and the damping sleeve 5 is fixed in the housing 1. When the motor 2 is working, the output spindle 4 rotates relative to the damping sleeve 5. When the motor 2 stops working, the damping sleeve 5 holds the output spindle 4 to prevent the output spindle 4 from deflecting freely.

[0030] The utility model arranges a damping sleeve 5 on the output spindle 4, and the damping sleeve 5 is fixed to the housing 1. The clamping force between the damping sleeve 5 and the output spindle 4 is less than the driving force of the motor 2, so that the motor 2 can transmit the output spindle 4 to overcome the clamping force and rotate through the transmission assembly 3. The clamping force can also fix the output spindle 4 when the motor 2 is not working, and prevent the output spindle 4 from rotating freely due to external force or transmission assembly clearance and other problems. It can effectively avoid abnormal noise caused by shaking, improve the texture, and improve the rotation accuracy and stability of the whole device. Moreover, the overall structure is simple, the assembly parts are few, and the assembly efficiency is high.

[0031] Among them, see Figure 3 , 4 The damping sleeve 5 is a PEEK damping sleeve, which has an interference fit with the output spindle 4. The PEEK damping sleeve has a more stable holding force, better damping effect, and lower noise. It can not only meet the requirement that the output spindle 4 rotates with the motor 2, thereby driving the screen installed on the output spindle 4 to rotate, but also hold the output spindle 4 when the motor 2 is not working to prevent it from shaking under the action of external forces such as vibration, thereby ensuring that the screen can stably stop at the rotation position where the motor 2 stops working, avoiding leaving users with the impression that the parts are not tightly assembled and the quality is poor, and improving the overall texture.

[0032] Among them, see Figure 3 , 4 A plurality of oil grooves 5.1 arranged at equal intervals are provided on the inner wall where the damping sleeve 5 contacts the output spindle 4. The oil grooves 5.1 are used to fill lubricating oil. When the output spindle 4 rotates relative to the damping sleeve 5, the lubricating oil can be evenly distributed on the contact surface between the damping sleeve 5 and the output spindle 4, thereby reducing the wear between the two and extending the service life.

[0033] Among them, see Figure 3 , 4At least two locking portions 5.2 are provided on the outer wall of the damping sleeve 5, and a slot 1.1 for the locking portion 5.2 to engage is provided in the housing 1. The cooperation between the slot 1.1 and the locking portion 5.2 can limit the damping sleeve 5 to prevent the damping sleeve 5 from rotating. Preferably, there are two or three locking portions 5.2.

[0034] Among them, see Figure 3 , 4 , 6, the upper end of the output main shaft 4 is connected with an upper bearing 6, the lower end of the output main shaft 4 is connected with a lower bearing 7, the housing 1 is provided with an upper bearing mounting position 1.2 and a lower bearing mounting position 1.3, the setting of the upper bearing 6 and the lower bearing 7 can assist the output main shaft 4 to rotate along the axis, reduce wear and extend the service life.

[0035] Among them, see Figure 3 , 4 5. A rubber ring 8 is provided at the connection between the output main shaft 4 and the lower bearing 7. A ring groove 4.1 for installing the rubber ring 8 is provided on the output main shaft 4. The setting of the rubber ring 8 can further play the role of interference fit and has a certain friction resistance. The rubber ring 8 can reduce the noise between the output main shaft 4 and the lower bearing 7 and play a role in noise reduction.

[0036] Among them, see Figure 3 , 4 , 5, the output main shaft 4 is provided with a first stop surface 4.2 matched with the upper bearing 6, a second stop surface 4.3 matched with the lower bearing 7 and a third stop surface 4.4 matched with the damping sleeve 5. The setting of the first stop surface 4.2, the second stop surface 4.3 and the third stop surface 4.4 can play an axial limiting role to avoid axial movement, and also make the assembly structure compact and reduce abnormal noise.

[0037] Among them, see Figure 3 The transmission assembly 3 includes a worm 3.1, a first-stage turbine 3.2 meshing with the worm 3.1, a second-stage gear 3.3 meshing with the first-stage turbine 3.2, a third-stage gear 3.4 meshing with the second-stage gear 3.3, and a fourth-stage gear 3.5 meshing with the third-stage gear 3.4. The output end of the motor 2 is connected to the worm 3.1 in a transmission manner. The fourth-stage gear 3.5 is sleeved on the output main shaft 4 and drives the output main shaft 4 to rotate synchronously. The output main shaft 4 and the fourth-stage gear 3.5 are matched through a flat position, which is convenient for positioning and installation and can improve the stability of mechanical transmission. The housing 1 is provided with a motor mounting position 1.4 for mounting the motor 2, a worm mounting position 1.5 for mounting the worm 3.1, a first mounting position 1.6 for mounting the first-stage turbine 3.2, a second mounting position 1.7 for mounting the second-stage gear 3.3, a third mounting position 1.8 for mounting the third-stage gear 3.4, and a fourth mounting position 1.9 for mounting the output main shaft 4.

[0038] The housing 1 comprises a base 1a and an upper cover 1b covering the base 1a. The base 1a and the upper cover 1b are fixedly connected by screws, and are easy to assemble and disassemble.

[0039] When working, by controlling the motor 2 to work, the motor 2 drives the worm 3.1 to rotate, and the worm 3.1 sequentially links the first-stage turbine 3.2, the second-stage gear 3.3, the third-stage gear 3.4 and the fourth-stage gear 3.5. The fourth-stage gear 3.5 drives the output main shaft 4 to rotate synchronously, thereby driving the movable device such as the screen to rotate, so that the vehicle-mounted screen can be electrically adjusted and steered. When the motor 2 stops working, the screen stops rotating and stops at the angle required by the user. Since the transmission component 3 is transmitted through multiple gears, it is inevitable that there is a transmission gap. When the motor 2 is not working, the entire device is easily shaken by external forces such as vibration, and PEE The setting of the K damping sleeve can effectively prevent the output spindle 4 from freely deflecting with the transmission clearance of the transmission component 3. The clamping force between the PEEK damping sleeve and the output spindle 4 is less than the driving force of the motor 2, so that the motor 2 can transmit the output spindle 4 through the transmission component 3 to overcome the clamping force and rotate. The clamping force can also fix the output spindle 4 when the motor 2 is not working, preventing the output spindle 4 from freely rotating, which can effectively avoid abnormal noise caused by shaking, improve the texture, and improve the rotation accuracy and stability of the entire device. The clamping force provided by the PEEK damping sleeve is more stable, the damping effect is better, the noise is smaller, the structure is simple, and the assembly is convenient.

[0040] Unless otherwise specified, the materials, reagents and experimental equipment involved in the embodiments of the present invention are all commercially available products in the field of electromechanical transmission structures.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A damping rotation device for a vehicle-mounted screen, characterized in that: It includes a housing, a motor, a transmission assembly and an output spindle. The motor transmits the output spindle through the transmission assembly. The motor and the transmission assembly are both installed in the housing. One end of the output spindle is exposed outside the housing for connecting to a movable device. A damping sleeve is provided on the output spindle, which is fixed in the housing. When the motor is working, the output spindle rotates relative to the damping sleeve. When the motor stops working, the damping sleeve holds the output spindle tightly to prevent the output spindle from deflecting freely.

2. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: The damping sleeve is a PEEK damping sleeve, and the PEEK damping sleeve is interference fit with the output spindle.

3. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: The inner wall of the damping sleeve in contact with the output main shaft is provided with a plurality of oil grooves arranged at equal intervals.

4. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: At least two clamping parts are arranged on the outer wall of the damping sleeve, and a clamping groove for clamping the clamping parts is arranged in the shell.

5. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: The upper end of the output main shaft is connected with an upper bearing, the lower end of the output main shaft is connected with a lower bearing, and the housing is provided with an upper bearing mounting position and a lower bearing mounting position.

6. The damping rotation device for a vehicle-mounted screen according to claim 5, characterized in that: A rubber ring is provided at the connection between the output main shaft and the lower bearing, and a ring groove for installing the rubber ring is provided on the output main shaft.

7. The damping rotation device for a vehicle-mounted screen according to claim 5, characterized in that: The output main shaft is provided with a first stop surface matched with the upper bearing, a second stop surface matched with the lower bearing and a third stop surface matched with the damping sleeve.

8. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: The transmission assembly includes a worm, a first-stage turbine meshing with the worm, a second-stage gear meshing with the first-stage turbine, a third-stage gear meshing with the second-stage gear, and a fourth-stage gear meshing with the third-stage gear. The output end of the motor is transmission-connected to the worm, and the fourth-stage gear is sleeved on the output main shaft and drives the output main shaft to rotate synchronously.

9. The damping rotation device for a vehicle-mounted screen according to claim 8, characterized in that: The housing is provided with a motor mounting position for mounting a motor, a worm mounting position for mounting a worm, a first mounting position for mounting a first-stage turbine, a second mounting position for mounting a second-stage gear, a third mounting position for mounting a third-stage gear, and a fourth mounting position for mounting an output main shaft.

10. The damping rotation device for a vehicle-mounted screen according to claim 1, characterized in that: The shell comprises a base and an upper cover covering the base.

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