Linear driving device for display screen

Abstract

A display screen linear driving device comprises a base frame, a screen support, a lead screw and a power piece, the lead screw is rotatably arranged on the base frame, the power piece is connected to the base frame and used for driving the lead screw to rotate, the screen support is in sliding fit relative to the base frame, the sliding direction is parallel to the axis of the lead screw, and the screen support comprises a nut table. The nut table is provided with a threaded sleeve connected to the lead screw in a threaded mode, a plurality of through grooves distributed in the circumferential direction are formed in the side circumferential wall of the threaded sleeve, the outer circumferential side of the threaded sleeve is sleeved with an elastic piece, and the elastic piece is used for tightening the threaded sleeve towards the lead screw. Compared with the prior art, according to the scheme, the through groove is formed in the side peripheral wall of the threaded sleeve of the nut table, so that the threaded sleeve has certain radial deformation capacity, the elastic piece is connected to the peripheral side of the threaded sleeve in a sleeving mode, and when the threaded connection face of the threaded sleeve or the lead screw is abraded, the threaded sleeve is tightened towards the lead screw through the elastic piece; and it is ensured that the threaded sleeve and the lead screw are in tight threaded connection fit all the time, and stability is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of display screen driving technology, in particular to a display screen linear driving device. Background Art

[0002] In recent years, as the automotive industry has continued to transform towards electrification, consumers' demands for automotive functions have become increasingly diverse. From multimedia screens inside cars to the popularity of LCD instruments + smart touch screens, it has not only changed people's travel methods, but also made car life more fulfilling.

[0003] Multimedia display screens have always been an important way to achieve human-computer interaction in cars. In order to meet the needs of different consumers, display screens are often made movable, and various drive devices are used to drive the screen to move horizontally or up and down to achieve displacement adjustment functions. Among them, the screw-nut motor pair is a more common type of drive device. It runs smoothly and has good precision, and has been widely used. However, with the increase of usage time, the screw and nut are prone to wear and looseness, which not only affects the adjustment accuracy and stability, but also because the car is often bumpy during driving, it is easy to make noise, affecting the user experience. Utility Model Content

[0004] The utility model aims to solve the problem that the screw rod and the nut of the display screen driving device in the prior art are prone to wear and loosening, which not only affects the adjustment accuracy and stability, but also easily generates noise, affecting the user experience.

[0005] In order to solve the above problems, the utility model provides a linear drive device for a display screen, including a base frame, a screen bracket, a screw rod and a power member, the screw rod is rotatably arranged on the base frame, the power member is connected to the base frame and is used to drive the rotation of the screw rod, the screen bracket is slidably matched with the base frame and the sliding direction is parallel to the axis of the screw rod, the screen bracket includes a nut base, the nut base is provided with a screw sleeve threaded to the screw rod, the side circumferential wall of the screw sleeve is provided with a plurality of circumferentially distributed through grooves, the outer circumferential side of the screw sleeve is sleeved with an annular elastic member, and the elastic member is used to tighten the screw sleeve toward the screw rod.

[0006] The above scheme drives the screw to rotate through the power part, and the screen bracket can reciprocate along the axial direction of the screw rod due to the threaded connection between the nut base and the screw rod, thereby realizing the displacement adjustment function; at the same time, compared with the prior art, the above scheme opens a through groove on the side wall of the screw sleeve of the nut base, so that the screw sleeve has a certain radial deformation ability, and then by sleeve-connecting an elastic part on the outer peripheral side of the screw sleeve, when the threaded surface of the screw sleeve or the screw rod is worn, the elastic part tightens the screw sleeve toward the screw rod, ensuring that the screw sleeve and the screw rod are always in a tight threaded fit, effectively improving the stability.

[0007] In an improved solution, the through groove extends in a direction parallel to the screw axis to the end surface of the screw sleeve away from the nut platform, thereby ensuring that the screw sleeve has a greater radial deformation capacity.

[0008] In an improved solution, there are two through grooves which are symmetrically distributed relative to the center of the screw sleeve, thereby ensuring that the screw sleeve has a more stable radial deformation ability.

[0009] In an improved solution, the base frame is provided with a guide rail parallel to the axis of the screw rod, and the screen bracket also includes a sliding portion slidably connected to the guide rail, thereby achieving a stable sliding fit of the screen bracket relative to the base frame.

[0010] In an improved solution, the power member includes a motor, and the output end of the motor acts on one end of the screw rod to drive the screw rod to rotate.

[0011] In an improved solution, the power member further includes a reducer connected between the output end of the motor and the screw rod.

[0012] In an improved solution, a cable tie groove is provided on one side of the screen bracket, and the cable tie groove is mainly used to fix the cables of the display screen to avoid interference between the screen bracket and the cables during linear movement.

[0013] In an improved solution, the screen bracket is used to be installed on the left side of the back of the display screen, and the cable tie groove is located on the right side of the screen bracket, so that the layout is more reasonable and suitable for most display screens.

[0014] In an improved solution, the elastic member is a spring or a rubber ring.

[0015] In an improved solution, the axis of the screw rod is vertical, and the upper end and the lower end of the screw rod are rotatably connected to the base frame through bearings, so that the linear movement direction of the screen bracket is vertical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a linear drive device for a display screen;

[0017] Figure 2 A schematic top view of an overall schematic diagram of a linear drive device for a display screen;

[0018] Figure 3 For along Figure 2 Schematic cross-sectional view of the AA section line;

[0019] Figure 4 A schematic diagram of a linear drive device for a display screen with the rear side of the base frame hidden Figure 1;

[0020] Figure 5 A schematic diagram of a linear drive device for a display screen with the rear side of the base frame hidden Figure 2 ;

[0021] Figure 6 The present invention is a schematic diagram of the coordination of a nut platform, a threaded sleeve and an elastic member of a linear drive device for a display screen.

[0022] Description of reference numerals:

[0023] 1. Base frame; 11. Guide rail; 2. Screen bracket; 21. Nut stand; 22. Screw sleeve; 23. Through slot; 24. Sliding joint; 25. Cable duct; 3. Screw rod; 4. Power part; 41. Motor; 42. Reducer; 5. Elastic part; 6. Display screen. DETAILED DESCRIPTION

[0024] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art may make adjustments to them as needed to adapt to specific application scenarios.

[0025] In the description of the following embodiments, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0026] In the embodiments of the present application, 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.

[0027] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figure 1-Figure 6A linear drive device for a display screen provided by an embodiment of the utility model includes a base frame 1, a screen bracket 2, a screw rod 3 and a power piece 4. The screw rod 3 is rotatably arranged on the base frame 1. The power piece 4 is connected to the base frame 1 and is used to drive the rotation of the screw rod 3. The screen bracket 2 is slidably matched with the base frame 1 and the sliding direction is parallel to the axis of the screw rod 3. The screen bracket 2 includes a nut platform 21. The nut platform 21 is provided with a screw sleeve 22 screwed to the screw rod 3. 1. The side circumferential wall of the screw sleeve 22 is provided with a plurality of circumferentially distributed through grooves 23. The outer circumferential side of the screw sleeve 22 is sleeved with an elastic member 5. The elastic member 5 is used to tighten the screw sleeve 22 toward the screw rod 3.

[0029] The above scheme drives the screw rod 3 to rotate through the power part 4, and the screen bracket 2 can reciprocate along the axial direction of the screw rod 3 due to the threaded connection between the nut base 21 and the screw rod 3, thereby realizing the displacement adjustment function; at the same time, compared with the prior art, the above scheme opens a through groove 23 on the side wall of the screw sleeve 22 of the nut base 21, so that the screw sleeve 22 has a certain radial deformation ability, and then by sleeve-fitting an annular elastic part 5 on the outer peripheral side of the screw sleeve 22, when the threaded surface of the screw sleeve 22 or the screw rod 3 is worn, the elastic part 5 tightens the screw sleeve 22 toward the screw rod 3, ensuring that the screw sleeve 22 and the screw rod 3 are always in a tight threaded fit, thereby effectively improving the stability.

[0030] In this embodiment, the axis of the screw rod 3 is vertical, and the upper and lower ends of the screw rod 3 are rotatably connected to the base frame 1 through bearings, so that the linear movement direction of the screen bracket 2 is vertical. Of course, the axis of the screw rod 3 can also be adjusted to be horizontal or oblique as needed, and this design does not limit this. It should also be noted that the nut platform 21 referred to in this application is interpreted in an expanded manner, that is, the function of the nut platform 21 of this application is mainly to support the screw sleeve 22, and the screw sleeve 22 is connected to the screen bracket 2 through the nut platform 21. All those that play a similar role belong to the nut platform 21 referred to in this application. The nut platform 21 and the screw sleeve 22 can be a split assembly or an integrated connection, and this design does not limit this. The elastic member 5 is preferably a spring or a rubber ring, so as to achieve a tightening effect on the screw sleeve 22.

[0031] like Figure 6 As shown, in this embodiment, the through groove 23 extends in a direction parallel to the axis of the screw rod 3 to the end surface of the screw sleeve 22 away from the nut platform 21, thereby ensuring that the screw sleeve 22 has a greater radial deformation capacity.

[0032] The number of the through slots 23 can be set as needed. In the present embodiment, there are two through slots 23 which are symmetrically distributed relative to the center of the screw sleeve 22, thereby ensuring that the screw sleeve 22 has a more stable deformation capability in the radial direction.

[0033] In this embodiment, the base frame 1 is provided with a guide rail 11 parallel to the axis of the screw rod 3, and the guide rail 11 is preferably two and respectively located on the left and right sides of the screw rod 3; accordingly, the left and right sides of the screen bracket 2 are respectively provided with sliding parts 24 slidably connected to the corresponding guide rails 11. In this embodiment, since the guide rail 11 is columnar, the sliding part 24 is in the shape of a slide groove, thereby realizing a stable sliding fit of the screen bracket 2 relative to the base frame 1.

[0034] In this embodiment, the power member 4 includes a motor 41, and the output end of the motor 41 acts on one end of the screw rod 3 to drive the screw rod 3 to rotate. The rotation drive of the screw rod 3 by the motor 41 belongs to the prior art and will not be repeated here. Further, the power member 4 also includes a reducer 42 connected between the output end of the motor 41 and the screw rod 3. The reducer 42 can be in the form of a gear set or a worm gear, which is not limited in this design.

[0035] It should be noted that the screen bracket 2 in the present application is understood in a broad sense, that is, the screen bracket 2 can be another component independent of the display screen 6, or can be directly integrated with the display screen 6. For example, in some embodiments, the screen bracket 2 is independent of the display screen 6, the display screen 6 is installed on the front side of the screen bracket 2, and the base frame 1 is located at the rear side of the screen bracket 2; while in other embodiments, the screen bracket 2 is directly integrated with the display screen 6, that is, the screen bracket 2 directly serves as the back panel of the display screen 6, and the base frame 1 is also located at the rear side of the screen bracket 2.

[0036] When the screen bracket 2 is designed to be independent of the display screen 6, a cable tie 25 may be provided on one side of the screen bracket 2. A cable tie is provided in the cable tie 25. After the cables of the display screen 6 enter the cable tie 25, they are fixed by the cable tie to avoid interference between the screen bracket 2 and the cables during linear movement.

[0037] by Figure 2 As a reference, the screen bracket 2 is used to be installed to the left side of the back of the display screen 6, and the cable tie groove 25 is located on the right side of the screen bracket 2, so that the layout is more reasonable and suitable for most display screens 6.

[0038] It should be noted that, in the description of the present application, the terms "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inside, and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A linear drive device for a display screen, characterized in that: The invention comprises a base frame (1), a screen bracket (2), a screw rod (3) and a power piece (4), wherein the screw rod (3) is rotatably arranged on the base frame (1), the power piece (4) is connected to the base frame (1) and is used to drive the screw rod (3) to rotate, the screen bracket (2) is slidably matched with the base frame (1) and the sliding direction is parallel to the axis of the screw rod (3), the screen bracket (2) comprises a nut base (21), the nut base (21) is provided with a screw sleeve (22) screwed to the screw rod (3), the side circumferential wall of the screw sleeve (22) is provided with a plurality of circumferentially distributed through grooves (23), the outer circumferential side of the screw sleeve (22) is sleeved with an annular elastic piece (5), and the elastic piece (5) is used to tighten the screw sleeve (22) toward the screw rod (3).

2. The display screen linear driving device according to claim 1, characterized in that: The through groove (23) extends in a direction parallel to the axis of the screw rod (3) to an end surface of the screw sleeve (22) that is away from the nut platform (21).

3. The display screen linear driving device according to claim 2, characterized in that: There are two through grooves (23) which are symmetrically distributed relative to the center of the screw sleeve (22).

4. The display screen linear driving device according to claim 1, characterized in that: The base frame (1) is provided with a guide rail (11) parallel to the axis of the screw rod (3), and the screen bracket (2) also includes a sliding connection portion (24) slidably connected to the guide rail (11).

5. The display screen linear driving device according to claim 1, characterized in that: The power member (4) comprises a motor (41), and the output end of the motor (41) acts on one end of the screw rod (3) to drive the screw rod (3) to rotate.

6. The display screen linear driving device according to claim 5, characterized in that: The power member (4) also includes a reducer (42) connected between the output end of the motor (41) and the screw rod (3).

7. The display screen linear driving device according to claim 1, characterized in that: A cable harness groove (25) is provided on one side of the screen bracket (2).

8. The display screen linear driving device according to claim 7, characterized in that: The screen bracket (2) is used to be installed on the left side of the back of the display screen (6), and the cable duct (25) is located on the right side of the screen bracket (2).

9. The display screen linear driving device according to claim 1, characterized in that: The elastic member (5) is a spring or a rubber ring.

10. The display screen linear driving device according to any one of claims 1 to 9, characterized in that: The axis of the screw rod (3) is in the vertical direction, and the upper end and the lower end of the screw rod (3) are rotatably connected to the base frame (1) via bearings respectively.

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