Slip screen sliding mechanism

Abstract

The application discloses a sliding mechanism of a sliding screen, and belongs to the technical field of vehicle-mounted display devices, aiming to solve the problems of the prior art that a vehicle-mounted ceiling screen cannot slide forward and backward, a wire harness follow-up structure occupies a large space, is prone to abnormal sound, and a wire is prone to being damaged by being pulled. The mechanism comprises a guide rail, a sliding block, a wire fixing seat and a flexible wire, and the inside of the guide rail is divided into three intercommunication areas of a flexible shaft, the sliding block and the wire; the sliding block is an L-shaped iron piece plastic package structure, is slidably arranged in the guide rail, and is provided with a screen fixing point and a clamping structure; the wire fixing seat is clamped on the sliding block and slides synchronously with the sliding block, is integrated with folding ribs and a plurality of special-shaped wire grooves, can limit and guide the flexible wire, and realizes stable wire routing of the flexible wire by 90 degrees. The application adopts built-in flexible shaft driving, is compact in structure, and is suitable for narrow installation space of a roof; an integrated folding and pressing structure does not need additional fasteners, and production cost is reduced. The flexible wire is regularly routed and does not move, can effectively avoid damage caused by pulling and bending, greatly reduces sliding abnormal sound in cooperation with the plastic package sliding block, is stable in operation, and is strong in adaptability.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted display devices, specifically a sliding mechanism for a vehicle-mounted ceiling-mounted screen. Background Technology

[0002] Most existing in-vehicle ceiling screens use a fixed installation structure, which can only be folded and unfolded, and cannot be slid and adjusted in the front and rear directions of the vehicle, making it difficult to adapt to the viewing needs of passengers in different rows.

[0003] In some sliding screen solutions, the wiring harness often uses fixed wiring or cable chain storage: fixed wiring harnesses cannot match the positional changes of the slider, and are prone to pulling, bending, and fatigue; cable chain solutions occupy a lot of space and are prone to abnormal noise during movement. For example, the utility model patent with publication number CN223864790U discloses a bidirectional sliding ceiling screen structure, but does not disclose a wiring harness solution adapted to the sliding. For example, the invention patent application with publication number CN118898943A uses a cable chain to store the wiring harness, which has the drawbacks of occupying a lot of space and having a high risk of abnormal noise. In summary, the existing technology lacks a wiring harness following sliding mechanism that is compact in structure, runs smoothly, has low abnormal noise, and is adapted to the sliding of ceiling screens. Summary of the Invention

[0004] The purpose of this invention is to provide a sliding mechanism for a sliding screen, which solves the problems of existing ceiling screens being unable to slide, having large space occupied by the wire harness follow-up structure, and being prone to abnormal noise. It has the advantages of compact structure, low cost, and stable operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: the sliding screen sliding mechanism, the key technical points of which are: including, The guide rail, as the main carrier, is internally divided into a flexible shaft area, a slider area, and a ribbon cable area. The slider area is connected to the flexible shaft area and the ribbon cable area, respectively. The slider, which slides within the slider area of ​​the guide rail, includes an L-shaped slider iron piece as a skeleton, a slider plastic-coated piece spaced between the slider iron piece and the guide rail, and a snap-fit ​​block perpendicular to the bottom of the slider iron piece. Several sliding screen fixing points are provided on one side of the horizontal section of the slider iron piece along the sliding direction. The ribbon cable holder is installed on the snap-fit ​​block of the slider and slides within the ribbon cable area of ​​the guide rail to guide the flexible ribbon cable. The flexible flat cable extends along the length of the guide rail, and after being bent and flipped, it extends in a 90° direction through the cable fixing seat.

[0006] Furthermore, the ribbon cable fixing base includes a block-shaped fixing base body, folded ribs extending forward and backward respectively, a first clamping block and a second clamping block fixed on the folded ribs on the front and rear sides respectively, a second ribbon cable groove protruding upward at the edge of the fixing base body, a buckle set on one side of the second ribbon cable groove, a third ribbon cable groove recessed in the side of the fixing base body, a fourth ribbon cable groove set on the fixing base body and communicating with the first ribbon cable groove, and a mounting groove set horizontally on the fixing base body and cooperating with the buckle; the first clamping block is bent by the folded ribs and then clamped in the first ribbon cable groove, and the second clamping block is bent by the folded ribs and then clamped on the buckle; the flexible ribbon cable is led out after passing through the first ribbon cable groove, the fourth ribbon cable groove, and the second ribbon cable groove in sequence.

[0007] Furthermore, a third cable tray is provided at the bottom of the main body of the fixed base along the front-to-back direction; the flexible cable is led out after passing through the first cable tray, the third cable tray, and the second cable tray in sequence.

[0008] The beneficial effects of this invention are: the cable clamping block is integrally injection molded with the cable fixing seat body through folded ribs, eliminating the need for separate mold opening and assembly, thus saving mold and labor costs.

[0009] The flexible flat cable is constrained by multiple sets of wire grooves and winding grooves in the cable fixing seat, ensuring a stable cable path. It moves smoothly without slipping as the slider moves within the guide rail, resulting in smoother operation and effectively reducing abnormal noise.

[0010] The slider adopts a plastic-coated iron structure, which balances installation strength and quiet sliding; the drive flexible shaft is built-in, with a compact structure that is suitable for the narrow installation space of the ceiling screen. Attached Figure Description

[0011] Figure 1 This is an exploded structural diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure in use of the present invention.

[0013] Figure 3 This is a schematic diagram of the guide rail structure of the present invention.

[0014] Figure 4 This is a schematic diagram of the slider structure of the present invention.

[0015] Figure 5 This is a schematic diagram of the cable fixing base of the present invention.

[0016] Figure 6 This is a schematic diagram of the cable fixing base of the present invention in its extended state.

[0017] Figure 7 This is a schematic diagram of the cable fixing base of the present invention in its assembled state.

[0018] Figure 8 This is a schematic diagram of one of the ribbon cable fixing bases and ribbon cable assembly structures of the present invention.

[0019] Figure 9 This is a schematic diagram of another cable fixing base and cable assembly structure according to the present invention.

[0020] Explanation of reference numerals in the attached diagram: 1 guide rail, 101 flexible shaft area, 102 slider area, 103 ribbon cable area; 2 slider, 201 slider iron part, 202 slider plastic coating, 20201 snap-fit ​​block, 20202 sliding screen fixing point, 203 drive flexible shaft; 3. Cable mounting bracket; 301. Folded rib; 302. First clamping block; 303. Second clamping block; 304. First cable groove; 305. Second cable groove; 306. Third cable groove; 307. Mounting groove; 308. Fourth cable groove; 309. Buckle; 4. Flexible flat cable. Detailed Implementation

[0021] The following combination Figures 1-9 The specific details of the present invention will be described in detail through specific embodiments. The sliding mechanism of the sliding screen mainly includes a guide rail 1, a slider 2, a ribbon cable fixing seat 3, and a flexible ribbon cable 4.

[0022] The guide rail 1, as the main carrier, is internally divided into a flexible shaft area 101, a slider area 102, and a ribbon cable area 103. The slider area 102 is connected to the flexible shaft area 101 and the ribbon cable area 103 respectively. The slider 2 slides within the slider area 102 of the guide rail 1. It includes an L-shaped stamped slider iron piece 201 serving as a skeleton, a slider plastic-coated piece 202 spaced between the slider iron piece 201 and the guide rail 1, and a snap-fit ​​block 20201 perpendicular to the bottom of the slider iron piece 201. The slider iron piece 201 provides installation strength. The slider plastic-coated piece 202 is made of engineering plastic injection molding, effectively reducing sliding friction and noise. A drive flexible shaft 203 passes through the slider plastic-coated piece 202, which is connected to an external drive motor. Through rotational transmission, the slider 2 moves linearly along the guide rail 1. Several sliding screen fixing points 20202 are provided on one side of the horizontal section of the slider iron piece 201 along the sliding direction for fixing the ceiling screen body. The sliding screen fixing points 20202 can be added or removed according to actual needs.

[0023] The ribbon cable fixing seat 3 is installed on the snap-fit ​​block 20201 of the slider 2 and slides within the ribbon cable area 103 of the guide rail 1. It slides synchronously with the slider 2 and is used to guide the flexible ribbon cable 4. The flexible flat cable 4 extends along the length of the guide rail 1, and after being bent and flipped, it extends in a 90° direction through the flat cable fixing seat 3.

[0024] like Figure 9 The coiled ribbon cable shown includes: a ribbon cable fixing base 3 comprising a block-shaped fixing base body, folded ribs 301 extending forward and backward respectively, a first clamping block 302 and a second clamping block 303 fixed to the folded ribs 301 on the forward and backward sides respectively, a second ribbon cable groove 305 protruding upward at the edge of the fixing base body, a buckle 309 on one side of the second ribbon cable groove 305, a third ribbon cable groove 306 recessed on the side of the fixing base body, a fourth ribbon cable groove 308 on the fixing base body communicating with the first ribbon cable groove 304, and a mounting groove 307 on the fixing base body arranged horizontally and cooperating with the snap-fit ​​block 20201. Each ribbon cable groove has rounded corners to prevent scratching the flexible ribbon cable. After the mounting groove 307 on the ribbon cable fixing base 3 is interference-fitted with the snap-fit ​​block 20201 on the slider 2, they are both inserted into the guide rail 1. The folding rib 301 can be made of thin plastic or metal strips and can be bent repeatedly. During assembly, after the soft ribbon cable is placed in the cable groove, the bending clamping block can be used to clamp and fix the ribbon cable without the need for additional fasteners.

[0025] The flexible flat cable 4 passes sequentially through the first cable tray 304, the fourth cable tray 308 (which is tilted at 45° and then wound upwards), and the second cable tray 305, finally exiting after a 90° turn. (The final extension direction of the flexible flat cable 4 forms a 90° angle with the direction of the guide rail 1.) The first clamping block 302 is bent by the folded rib 301 and then engaged in the first cable tray 304. The second clamping block 303 is bent by the folded rib 301 and then engaged in the buckle 309, thus clamping and fixing the flexible flat cable 4. This method allows for a 90° turn in the cable routing, adapting to the layout of cables exiting from the side of the vehicle body.

[0026] like Figure 8 The straight-winding cabling shown features a third cabling groove 306 located at the bottom of the mounting base along the front-to-back direction. The flexible cabling 4 passes sequentially through the first cabling groove 304, the third cabling groove 306 (folded upwards at 90°), and the second cabling groove 305, finally exiting after a 90° turn. This method allows for a 90° turn in the cabling, adapting to cabling layouts exiting from the side of the vehicle body. This method is suitable for cabling layouts exiting in the same direction, resulting in less cable routing resistance.

[0027] During operation, the drive shaft 203 is rotated by the motor, causing the slider 2 to slide linearly along the guide rail 1. The cable fixing seat 3 and the flexible cable 4 move synchronously with the slider. The flexible cable 4 is constrained by the cable groove, so there is no slippage or pulling during the movement, resulting in smooth operation and low noise.

Claims

1. A sliding mechanism for a sliding screen, characterized in that: include, The guide rail (1), as the main carrier, is internally divided into a flexible shaft area (101), a slider area (102), and a ribbon cable area (103). The slider area (102) is connected to the flexible shaft area (101) and the ribbon cable area (103) respectively. The slider (2) is slidably fitted in the slider area (102) of the guide rail (1), including an L-shaped slider iron piece (201) as a skeleton, a slider plastic coating (202) spaced between the slider iron piece (201) and the guide rail (1), and a snap-fit ​​block (20201) perpendicular to the bottom of the slider iron piece (201). Several sliding screen fixing points (20202) are provided on one side of the horizontal section of the slider iron piece (201) along the sliding direction. The ribbon cable fixing seat (3) is installed on the snap block (20201) of the slider (2) and slides in the ribbon cable area (103) of the guide rail (1) to guide the soft ribbon cable (4); The flexible flat cable (4) extends along the length of the guide rail (1), and after being bent and flipped, it extends in a 90° direction through the flat cable fixing seat (3).

2. The sliding mechanism of the sliding screen according to claim 1, characterized in that: The cable fixing base (3) includes a block-shaped fixing base body, folded ribs (301) extending forward and backward respectively, a first clamping block (302) and a second clamping block (303) fixed on the folded ribs (301) on the front and rear sides respectively, a second cable groove (305) protruding upward at the edge of the fixing base body, a buckle (309) provided on one side of the second cable groove (305), a third cable groove (306) recessed in the side of the fixing base body, and a first cable groove (304) provided on the fixing base body. The fourth cable tray (308) is connected, and the mounting slot (307) located on the main body of the fixed base is horizontally arranged and cooperates with the snap-fit ​​block (20201); the first clamping block (302) is bent by the folded rib (301) and snapped into the first cable tray (304), and the second clamping block (303) is bent by the folded rib (301) and snapped into the buckle (309); the flexible cable (4) is led out after passing through the first cable tray (304), the fourth cable tray (308), and the second cable tray (305) in sequence.

3. The sliding mechanism of the sliding screen according to claim 2, characterized in that: A third cable tray (306) is provided at the bottom of the main body of the fixed base along the front-to-back direction; the flexible cable (4) is led out after passing through the first cable tray (304), the third cable tray (306), and the second cable tray (305) in sequence.

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