Light bar fast-assembling and locking structure for vehicle-mounted backlight module

Abstract

The invention relates to the technical field of vehicle-mounted backlight modules, in particular to a light bar quick-mounting and locking structure for a vehicle-mounted backlight module, which comprises a die-casting back plate, a light bar module, a light bar locking device, a light bar locking device and a light bar locking device, wherein the die-casting back plate is provided with a mounting part for accommodating the light bar module; the light bar module is suitable for being mounted in the mounting part; the linkage locking mechanism is correspondingly arranged at at least one end of the light bar module, and the linkage locking mechanism comprises a driving piece which is operably arranged on the die-casting back plate; the sliding locking piece is in transmission connection with the driving piece and is driven by the driving piece to reciprocate in the first direction; the elastic piece acts on the sliding locking piece and provides reset force for the sliding locking piece; the movable part of the radial locking unit is linked with the sliding locking piece; wherein the sliding locking piece is provided with at least one first locking part, and the end part of the light bar module is provided with a first locking part corresponding to the first locking part; the movable part of the radial locking unit forms a second locking part capable of moving in the radial direction, and the end of the light bar module is provided with a second locking part corresponding to the second locking part.

Description

A quick-release locking structure for LED strips in automotive backlight modules Technical Field

[0001] This invention relates to the field of automotive backlight module technology, and in particular to a quick-release locking structure for light strips in automotive backlight modules. Background Technology

[0002] Automotive display technology is developing towards larger screens, higher screen-to-body ratios, and higher reliability. Edge-lit backlight modules are widely used due to their thin and light structure and controllable cost. As the core light source of the backlight module, the installation and fixing method of LED light strips directly affects the module's bezel width, assembly efficiency, and long-term stability. Currently, LED light strips in automotive backlight modules are mostly installed by directly locking them with screws or using simple clips. These methods not only require tools and involve cumbersome procedures and low assembly efficiency, but also, under the continuous vibration and impact environment of a vehicle, they are prone to loosening due to stress concentration or fretting wear, leading to optical defects or even electrical faults. At the same time, traditional fixing structures often do not fully consider coordination with heat dissipation paths, which also increases the difficulty of thermal management.

[0003] Therefore, the existing technology lacks a light bar fixing structure that can achieve rapid, tool-free installation, provide reliable locking force in multiple directions, adapt to the harsh vibration environment of vehicles, and facilitate heat dissipation management; this is precisely the technical problem that the present invention aims to solve. Summary of the Invention

[0004] To address the technical problems mentioned above, this invention proposes a quick-release locking structure for light strips in vehicle backlight modules.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a quick-release locking structure for a light strip in an automotive backlight module, comprising: a die-cast backplate having a mounting portion for accommodating a light strip module; a light strip module adapted to be installed within the mounting portion; and a linkage locking mechanism correspondingly disposed at at least one end of the light strip module, the linkage locking mechanism comprising: a driving member operably disposed on the die-cast backplate; a sliding locking member being driven by the driving member to reciprocate along a first direction; an elastic member acting on the sliding locking member to provide a restoring force; and a radial locking element. The unit has a movable part that is linked to the sliding locking member; wherein, the sliding locking member is provided with at least one first locking part, and the end of the light strip module is provided with a first locking part corresponding to the first locking part; the movable part of the radial locking unit constitutes a radially movable second locking part, and the end of the light strip module is provided with a second locking part corresponding to the second locking part; the driving member drives the sliding locking member to move, so that the first locking part engages with the first locking part, and simultaneously drives the movable part of the radial locking unit to engage the second locking part with the second locking part.

[0006] Furthermore, the mounting part is a mounting groove extending along the die-cast back plate, and the two ends of the mounting groove are provided with guide grooves integrally formed therewith, the extending direction of the guide grooves being the first direction.

[0007] Furthermore, the driving component includes a rotating shaft rotatably mounted on the die-cast back plate and an eccentric wheel fixedly sleeved on the rotating shaft; the sliding locking component is a locking block slidably disposed in the guide groove, one side of which abuts against the contour surface of the eccentric wheel; the elastic component is a spring with its two ends respectively connected to the locking block and the inner wall of the guide groove.

[0008] Furthermore, the first locking part consists of a positioning protrusion and a V-shaped protrusion provided on the locking block; the first locking part consists of a cylindrical groove adapted to the positioning protrusion and a V-shaped groove adapted to the V-shaped protrusion provided at the end of the light strip module.

[0009] Furthermore, the radial locking unit includes a cavity formed in the die-cast back plate, a positioning ball housed in the cavity, and a contact surface disposed on the locking block and cooperating with the positioning ball; the positioning ball constitutes the second locking part, and the hemispherical groove provided at the end of the light bar module constitutes the second locking part; the contact surface is configured to squeeze the positioning ball when the locking block slides, causing it to generate radial displacement.

[0010] Furthermore, the contact surface is composed of interlocking inclined surfaces and arc-shaped surfaces; the arc-shaped surface and the inner wall of the cavity together form a wrapping and limiting structure for the positioning ball.

[0011] Furthermore, a knob is coaxially fixedly connected to one end of the rotating shaft.

[0012] Furthermore, the linkage locking mechanism is provided at both ends of the light strip module.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the prior art, the present invention achieves multi-dimensional synchronous locking of the light strip module through a linkage locking mechanism, enabling rapid tool-free installation. The light strip module can be locked and fixed without the need for any special tools, greatly simplifying the installation steps and improving assembly efficiency to meet the needs of mass production. Simultaneously, it can simultaneously achieve multi-dimensional locking with dual axial and radial limits, effectively improving the stability of the locking structure. Combined with the continuous restoring force provided by the elastic element, it can offset the gaps caused by vehicle vibration, preventing fretting wear between the sliding locking element and the light strip module, preventing loosening of the connection due to vibration and impact, and ensuring long-term stable operation of the backlight module. Furthermore, using a die-cast backplate as the mounting base, the excellent thermal conductivity of the die-cast material allows for rapid heat conduction from the light strip module, achieving coordinated operation between the light strip module and the heat dissipation path, reducing thermal management difficulty, and extending the lifespan of the light strip. Attached Figure Description

[0014] Figure 1 is a structural schematic diagram of the quick-release locking structure for the light strip of the vehicle backlight module proposed in this invention; Figure 2 is a cross-sectional view of the quick-release locking structure for the light strip of the vehicle backlight module proposed in this invention; Figure 3 is an enlarged structural schematic diagram of point A in Figure 1 of this invention; Figure 4 is an enlarged structural schematic diagram of point B in Figure 2 of this invention; Figure 5 is a structural schematic diagram of the locking block in the quick-release locking structure for the light strip of the vehicle backlight module proposed in this invention.

[0015] In the diagram: 1-Die-cast back plate, 11-Mounting groove, 12-Cavity, 2-Light strip module, 21-Cylindrical groove, 22-Hemispherical groove, 23-V-groove, 3-Knob, 4-Shaft, 5-Eccentric wheel, 6-Locking block, 61-Positioning protrusion, 62-Contact surface, 621-Inclined surface, 622-Arc surface, 63-V-shaped protrusion, 7-Spring, 8-Positioning ball. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] As shown in Figures 1-5, this embodiment provides a quick-release locking structure for a light strip in an automotive backlight module, comprising: a die-cast backplate 1 with a mounting portion for accommodating a light strip module 2; a light strip module 2 adapted to be installed in the mounting portion; and a linkage locking mechanism correspondingly disposed at at least one end of the light strip module 2, the linkage locking mechanism comprising: a driving member operably disposed on the die-cast backplate 1; a sliding locking member driven by the driving member and reciprocating along a first direction; an elastic member acting on the sliding locking member to provide a restoring force; and a radial locking unit. The movable part of the unit is linked with the sliding locking member; wherein, the sliding locking member is provided with at least one first locking part, and the end of the light strip module 2 is provided with a first locking part corresponding to the first locking part; the movable part of the radial locking unit constitutes a radially movable second locking part, and the end of the light strip module 2 is provided with a second locking part corresponding to the second locking part; the driving member drives the sliding locking member to move, so that the first locking part engages with the first locking part, and simultaneously drives the movable part of the radial locking unit to engage the second locking part with the second locking part.

[0018] The mounting part is a mounting groove 11 extending along the die-cast back plate 1. Both ends of the mounting groove 11 are provided with guide grooves integrally formed therewith. The extending direction of the guide grooves is the first direction.

[0019] The driving component includes a rotating shaft 4 rotatably mounted on the die-cast back plate 1 and an eccentric wheel 5 fixedly sleeved on the rotating shaft 4; the sliding locking component is a locking block 6 slidably disposed in the guide groove, one side of which abuts against the contour surface of the eccentric wheel 5; the elastic component is a spring 7 with its two ends respectively connected to the locking block 6 and the inner wall of the guide groove.

[0020] Overall, the die-cast backplate 1 is made of aluminum alloy, which combines lightweight and excellent thermal conductivity, allowing for rapid heat conduction from the LED strip module 2. The die-cast backplate 1 has a mounting portion for accommodating the LED strip module 2. In this embodiment, the mounting portion is a mounting groove 11 extending along the direction of the die-cast backplate 1. The size of the mounting groove 11 matches the shape of the LED strip module 2, ensuring precise embedding. Both ends of the mounting groove 11 are integrally formed with guide grooves, extending in a preset first direction to provide guidance and limitation for the movement of the sliding locking component. The LED strip module 2 includes a substrate and LED beads welded to the substrate. Both ends of the LED strip module 2 have a first locking portion and a second locking portion, respectively. The linkage locking mechanism is correspondingly located at one end of the LED strip module 2, including a drive... The device comprises a driving component, a sliding locking component, an elastic component, and a radial locking unit. In this embodiment, the driving component includes a rotating shaft 4 rotatably mounted on the die-cast back plate 1 and an eccentric wheel 5 fixedly sleeved on the rotating shaft 4. The rotating shaft 4 is rotatably connected to the die-cast back plate 1 through a bearing to ensure smooth rotation. The sliding locking component is a locking block 6 slidably disposed in a guide groove. The shape of the locking block 6 is adapted to the guide groove and can slide smoothly along the extension direction (first direction) of the guide groove. One side of the locking block 6 abuts against the contour surface of the eccentric wheel 5. When the eccentric wheel 5 rotates, it can push the locking block 6 to move along the first direction. The elastic component is a spring 7. The two ends of the spring 7 are fixedly connected to the end of the locking block 6 away from the light strip module 2 and the inner wall of the guide groove, respectively. In its natural state, the spring 7 is in a compressed state, providing the locking block 6 with a restoring force away from the light strip module 2.

[0021] The sliding locking member is provided with a first locking part. In this embodiment, the first locking part is a positioning protrusion 61, and the first locking part at the end of the light strip module 2 is a cylindrical groove 21 adapted to the positioning protrusion 61. The movable part of the radial locking unit is linked with the sliding locking member. The movable part of the radial locking unit constitutes a second locking part, and the second locking part at the end of the light strip module 2 is a hemispherical groove 22 adapted to the second locking part.

[0022] The mounting groove 11 is integrally formed with the guide slide, which improves the overall structure and strength, while providing precise guidance for the sliding locking component to ensure smooth and reliable locking action; the transmission structure of eccentric wheel 5-locking block 6 is adopted, which has high transmission efficiency and can achieve locking by rotating the shaft 4, making the operation convenient and tool-free; the continuous restoring force provided by the spring 7 can offset the gap caused by vehicle vibration and prevent the locking structure from loosening; the aluminum alloy die-cast back plate 1 has both lightweight and excellent thermal conductivity, which can quickly conduct heat from the light strip and improve the heat dissipation effect.

[0023] As shown in Figures 2-5, in this embodiment, the first locking part is a positioning protrusion 61 and a V-shaped protrusion 63 provided on the locking block 6; the first locking part is a cylindrical groove 21 that matches the positioning protrusion 61 and a V-shaped groove 23 that matches the V-shaped protrusion 63, provided at the end of the light strip module 2.

[0024] Specifically, the structures of the first locking part and the first engaging part are optimized, while the remaining structures are consistent with the above embodiments.

[0025] The engagement of the positioning protrusion 61 and the cylindrical groove 21 enables precise positioning. The engagement of the V-shaped protrusion 63 and the V-shaped groove 23 has a self-centering function, which can further correct the installation position of the light strip module 2 and improve the installation accuracy. At the same time, the engagement structure of the double protrusion-groove increases the locking contact area 62, improves the stability of axial locking, and can effectively resist the torque generated by vehicle vibration, preventing the light strip module 2 from rotating circumferentially.

[0026] As shown in Figures 2, 4, and 5, in this embodiment, the radial locking unit includes a cavity 12 formed in the die-cast back plate 1, a positioning ball 8 housed in the cavity 12, and a contact surface 62 disposed on the locking block 6 and cooperating with the positioning ball 8; the positioning ball 8 constitutes the second locking part, and the hemispherical groove 22 provided at the end of the light strip module 2 constitutes the second locking part; the contact surface 62 is configured to squeeze the positioning ball 8 when the locking block 6 slides, causing it to generate radial displacement.

[0027] The contact surface 62 is composed of an inclined surface 621 and an arc-shaped surface 622 that are connected to each other; the arc-shaped surface 622 and the inner wall of the cavity 12 together form a wrapping and limiting structure for the positioning ball 8.

[0028] Specifically, the structure of the radial locking unit is refined, while the rest of the structure is consistent with the above embodiment.

[0029] In this embodiment, the radial locking unit includes a cavity 12 formed in the die-cast back plate 1, a positioning ball 8 housed in the cavity 12, and a contact surface 62 disposed on the locking block 6 and cooperating with the positioning ball 8; the positioning ball 8 constitutes the second locking part, and the second locking part at the end of the light strip module 2 is a hemispherical groove 22 adapted to the positioning ball 8; the contact surface 62 is composed of an inclined surface 621 and an arc-shaped surface 622 that are connected to each other. The inclined surface 621 is inclined toward the light strip module 2, and the arc-shaped surface 622 and the inner wall of the cavity 12 together constitute a wrapping and limiting structure for the positioning ball 8.

[0030] The positioning ball 8 is used as the second locking part, and its contact with the hemispherical groove 22 is a point contact, which reduces the friction during locking and reduces wear on the end of the light strip module 2. The contact surface 62 is composed of an inclined surface 621 and an arc-shaped surface 622. The inclined surface 621 facilitates the radial movement of the positioning ball 8, and the arc-shaped surface 622 forms a wrapping limit with the inner wall of the cavity 12, which can prevent the positioning ball 8 from dislodging from the hemispherical groove 22 under vehicle vibration, thus improving the reliability of radial locking. The radial locking unit is hidden in the die-cast back plate 1, which does not occupy additional installation space and is conducive to the thin and light design of the backlight module.

[0031] As shown in Figure 1, in this embodiment, a knob 3 is coaxially fixedly connected to one end of the rotating shaft 4.

[0032] Specifically, the driving components are optimized, while the rest of the structure remains the same as in the above embodiments.

[0033] The knob 3 increases the operating torque, making it easier for operators to manually rotate the shaft 4 and further improving the ease of operation; the anti-slip texture increases the friction between the hand and the knob 3, preventing slippage during operation, which is especially suitable for production workshops and other scenarios where hands may be stained with oil.

[0034] As shown in Figures 1 and 2, in this embodiment, the linkage locking mechanism is provided at both ends of the light strip module 2.

[0035] Specifically, the location of the linkage locking mechanism is optimized, while the rest of the structure remains the same as in the above embodiment.

[0036] In this embodiment, the linkage locking mechanism is provided at both ends of the light strip module 2, and the linkage locking mechanisms at both ends are symmetrically arranged.

[0037] Both ends of the light strip module 2 are equipped with a linkage locking mechanism, which makes the force on both ends of the light strip module 2 even and avoids stress concentration caused by locking on one side. At the same time, the double multi-dimensional locking at both ends further improves the stability of the locking structure and its resistance to vibration and impact, which can effectively adapt to the harsh vibration environment of the vehicle and ensure the long-term stable operation of the light strip module 2.

[0038] By rationally designing the structure of the die-cast backplate 1, the light strip module 2, and the linkage locking mechanism, significant advantages are achieved. It enables rapid, tool-free installation. The sliding locking component is driven by a drive unit, and locking and unlocking are completed simply by rotating the knob 3, greatly simplifying the installation process and improving assembly efficiency to meet the demands of mass production. Simultaneously, a multi-dimensional collaborative locking structure is formed. The cooperation between the V-shaped protrusion 63 and the V-shaped groove 23 also has a self-centering function, improving installation accuracy and locking stability. The continuous restoring force provided by the elastic component can offset the gaps caused by vehicle vibration, in conjunction with the positioning ball 8. The combination of the hemispherical groove 22 and the encasing and limiting structure of the arc surface 622 and the cavity 12 further enhances the vibration resistance and effectively adapts to the continuous vibration and impact environment of the vehicle. The die-cast back plate 1 is made of aluminum alloy, which has both lightweight and excellent thermal conductivity, and can realize the coordinated cooperation between the light strip and the heat dissipation path, reduce the difficulty of thermal management, and extend the service life of the light strip. In addition, the installation groove 11 and the guide slide are integrally formed to improve the structural strength. The hidden design of the linkage locking mechanism does not occupy extra space, which is conducive to the thinning of the backlight module, the disassembly and assembly process is convenient, and it can also improve the efficiency of later maintenance.

[0039] Of course, those skilled in the art will recognize that the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A quick-release locking structure for a light strip in an automotive backlight module, characterized in that, include: The die-cast back plate (1) is provided with a mounting part for accommodating the light strip module (2); the light strip module (2) is adapted to be installed in the mounting part; A linkage locking mechanism is correspondingly disposed at at least one end of the light strip module (2). The linkage locking mechanism includes: a driving member, operably disposed on the die-cast back plate (1); a sliding locking member, which is connected to the driving member and is driven by it to reciprocate along a first direction; an elastic member, which acts on the sliding locking member to provide a restoring force; and a radial locking unit, whose movable part is linked with the sliding locking member. The sliding locking member is provided with at least one first locking part, and the end of the light strip module (2) is provided with a first locking part corresponding to the first locking part. The movable part of the radial locking unit constitutes a radially movable second locking part, and the end of the light strip module (2) is provided with a second locking part corresponding to the second locking part. The driving member drives the sliding locking member to move, which enables the first locking part to engage with the first locking part, and synchronously drives the movable part of the radial locking unit to engage the second locking part with the second locking part.

2. The quick-release locking structure for light strips in vehicle backlight modules according to claim 1, characterized in that, The mounting part is a mounting groove (11) extending along the die-cast back plate (1). The mounting groove (11) has guide grooves integrally formed at both ends. The extension direction of the guide groove is the first direction.

3. The quick-release locking structure for light strips in vehicle backlight modules according to claim 2, characterized in that, The driving component includes a rotating shaft (4) rotatably mounted on the die-cast back plate (1) and an eccentric wheel (5) fixedly sleeved on the rotating shaft (4); the sliding locking component is a locking block (6) slidably disposed in the guide groove, one side of which abuts against the contour surface of the eccentric wheel (5); the elastic component is a spring (7) with its two ends respectively connected to the locking block (6) and the inner wall of the guide groove.

4. The quick-release locking structure for light strips in vehicle backlight modules according to claim 3, characterized in that, The first locking part is a positioning protrusion (61) and a V-shaped protrusion (63) provided on the locking block (6); the first locking part is a cylindrical groove (21) provided at the end of the light strip module (2) that is adapted to the positioning protrusion (61) and a V-shaped groove (23) that is adapted to the V-shaped protrusion (63).

5. The quick-release locking structure for light strips in vehicle backlight modules according to claim 4, characterized in that, The radial locking unit includes a cavity (12) formed in the die-cast back plate (1), a positioning ball (8) housed in the cavity (12), and a contact surface (62) provided on the locking block (6) and cooperating with the positioning ball (8); the positioning ball (8) constitutes the second locking part, and the hemispherical groove (22) provided at the end of the light bar module (2) constitutes the second locking part; the contact surface (62) is configured to squeeze the positioning ball (8) when the locking block (6) slides, so that it generates radial displacement.

6. The quick-release locking structure for a light strip in a vehicle backlight module according to claim 5, characterized in that, The contact surface (62) is composed of an inclined surface (621) and an arc surface (622) that are connected to each other; the arc surface (622) and the inner wall of the cavity (12) together form a wrapping and limiting structure for the positioning ball (8).

7. The quick-release locking structure for light strips in vehicle backlight modules according to claim 3, characterized in that, A knob (3) is coaxially fixedly connected to one end of the rotating shaft (4).

8. The quick-release locking structure for a light strip in a vehicle backlight module according to any one of claims 1-7, characterized in that, The linkage locking mechanism is provided at both ends of the light strip module (2).

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