A vehicle-mounted ceiling screen lock tongue detection device

Abstract

The utility model relates to a kind of vehicle-mounted ceiling screen lock tongue detection devices, including circuit board, two opposite lock tongues and the driving member of driving two lock tongues opposite movement or opposite movement, first microswitch and second microswitch are equipped on circuit board, further include two sliding rods between two lock tongues, the end of two sliding rods opposite with driving member cooperation, to drive two sliding rods do opposite movement or opposite movement, the end of two sliding rods opposite extends to corresponding lock tongue, to drive lock tongue swing, the circuit board is located in the side of two sliding rods, one sliding rod is connected with the slider synchronous sliding, the slider is located between two microswitches, first microswitch and second microswitch are respectively equipped in the upper and lower sides of circuit board.Using the above technical scheme, the utility model provides a kind of vehicle-mounted ceiling screen lock tongue detection devices, simplifies detection device, only needs to set up a circuit board and two microswitches can realize lock tongue in-place detection.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted ceiling screen technology, and in particular to a vehicle-mounted ceiling screen latch detection device. Background Technology

[0002] As automotive cockpits rapidly evolve towards digitalization and intelligence, the demand for in-vehicle entertainment ceiling-mounted screens is also increasing. The latch of an in-vehicle entertainment ceiling-mounted screen plays a protective role when the display is closed, preventing accidental opening. Detecting whether the latch is fully open and closed is also a crucial part of the latch mechanism, preventing the ceiling-mounted screen from rotating before the latch is fully engaged. Therefore, latch engagement detection is an indispensable part of the design of in-vehicle entertainment ceiling-mounted screens.

[0003] Current latch detection systems on the market typically involve placing circuit boards and two limit switches at the two latch positions. These limit switches are triggered when the latch is opened or closed to indicate that the latch is in position, preventing the ceiling-mounted screen from starting operation before the latch is fully engaged. This results in relatively high costs for existing latch detection systems. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a vehicle-mounted ceiling screen latch detection device. The detection device is simplified, and only one circuit board and two micro switches are needed to realize the latch position detection, which effectively reduces hardware and production costs.

[0005] The technical solution of this utility model is as follows: A vehicle-mounted ceiling screen latch detection device includes a circuit board, two oppositely arranged latches, and a driving component for driving the two latches to move towards or away from each other. The circuit board is provided with a first micro switch and a second micro switch, and also includes two sliding rods located between the two latches. The opposite ends of the two sliding rods cooperate with the driving component to drive the two sliding rods to move towards or away from each other. The opposite ends of the two sliding rods extend to the corresponding latches to drive the latches to swing. The circuit board is located on one side of the two sliding rods. A slider that slides synchronously with one of the sliding rods is connected to it. The slider is located between the two micro switches. The first micro switch and the second micro switch are respectively located on the upper and lower sides of the circuit board. The contacts of the two micro switches extend towards the sliding rods. The slider is located between the two contacts, and a pressing part is provided on the slider at the corresponding contact position to trigger the first micro switch or the second micro switch when the sliding rod slides.

[0006] The above technical solution uses a driving component to drive two sliding rods to slide synchronously, thereby causing the two latches to move towards or away from each other, thus opening or closing the latches. As the sliding rods slide, the slider slides synchronously with them, triggering either a first or second microswitch on the circuit board. Once the microswitch is triggered, the latch position is detected, preventing the ceiling screen from starting to rotate before the latch is in position. This simplifies the complexity of latch position detection. By placing the two latch position detection microswitches on a single circuit board, the number of components can be reduced without affecting the detection effect, thus lowering costs. Furthermore, the two microswitches are located on the upper and lower sides of the circuit board, respectively, ensuring that the slider can only trigger the microswitch from one direction, preventing misoperation and ensuring the accuracy of signal triggering.

[0007] A further feature of this invention is that the upper end of the latch is a hinged end, and a connecting groove is provided in the middle of the latch. The connecting groove has a slot for the sliding rod to extend into on the side facing the driving component. A connecting rod is provided in the connecting groove, and the outer circumferential surface of the connecting rod abuts against the two side walls of the connecting groove. The sliding rod is fixedly connected to the connecting rod so as to drive the latch to swing when the sliding rod slides.

[0008] With the above-mentioned further configuration, when the two sliding rods move in opposite directions, the sliding rods will drive the connecting rods connected to them to move synchronously. Because the outer circumferential surface of the connecting rods abuts against the side wall of the connecting groove, it will drive the latch to swing around the hinge end, thereby opening the latch. When moving in the opposite direction, the latch will close.

[0009] A further feature of this invention is as follows: a groove is provided on the connecting rod, a first connecting hole is provided at the bottom of the groove, two positioning blocks are provided on the side wall of the groove, a second connecting hole and two positioning grooves are provided on the sliding rod, the second connecting hole and the first connecting hole are coaxially arranged and fixed with fasteners, and the two positioning blocks are engaged in the corresponding positioning grooves.

[0010] By adopting the above-mentioned further settings, the connection between the sliding rod and the connecting rod is made more secure, which in turn makes the sliding rod and the locking tongue more stable, preventing them from coming apart and affecting the operation of the locking tongue.

[0011] A further feature of this invention is that it includes at least two guide blocks, each of which is arranged sequentially along the sliding direction of the sliding rod and located at both ends of the driving member. The guide blocks are sleeved on the outer periphery of the sliding rod, and the sliding rod slides relative to the guide blocks under the action of the driving member.

[0012] The above-mentioned further design serves as a guide, ensuring structural stability and smoothness when the sliding rod slides. The drive block is fixedly installed on the ceiling fixture and other positions by screws.

[0013] A further improvement of this utility model is as follows: a protrusion is provided on the sliding rod, and a guide groove is provided on the guide block along the sliding direction of the sliding rod. The cross-section of the guide groove is convex. A pressing piece in the shape of a "V" is also provided on the guide block, and the pressing piece presses against the protrusion.

[0014] By further modifying the settings described above, the range of motion of the sliding rod can be limited to ensure that it moves along a predetermined trajectory and avoids deviating from the normal path.

[0015] A further feature of this invention is as follows: the driving component is a motor, the driving component is connected to the circuit board, and a transmission assembly is provided between the motor and the sliding rod. The transmission assembly includes a worm gear, a driving gear, and a driven gear. The worm gear meshes with a worm located on the output shaft of the motor. The driving gear is coaxially arranged with the worm gear and meshes with the driven gear. The driven gear has two symmetrically arranged arc-shaped grooves, and the two sliding rods have first connecting posts located in the corresponding arc-shaped grooves and sliding relative to each other within the arc-shaped grooves.

[0016] With the above-mentioned further configuration, the axial motion of the motor is converted into axial motion through the transmission component, and the two sliding rods can be driven synchronously by a single drive component, resulting in high transmission efficiency.

[0017] A further feature of this invention is that the sliding rod connected to the slider has several third connecting holes, the slider has several second connecting posts and several fourth connecting holes, the second connecting posts are inserted into some of the third connecting holes, the fourth connecting holes are coaxially arranged with the third connecting holes, and screws are inserted into the connecting holes to fix the slider to the sliding rod.

[0018] The above-mentioned further design makes the structure between the slider and the sliding rod robust and the connection between the two convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0020] Figure 2 This is a partial schematic diagram of the circuit board according to a specific embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of a specific embodiment of the present utility model, showing a sliding rod on the locking tongue;

[0022] Figure 4 This is a schematic diagram of the sliding rod and guide block in a specific embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the locking tongue in a specific embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the guide block in a specific embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the locking tongue and connecting rod in a specific embodiment of this utility model;

[0026] Figure 8 This is a schematic diagram of the motor and transmission assembly in a specific embodiment of the present invention.

[0027] In the diagram, 1 is a circuit board; 11 is a first micro switch; 11 is a second micro switch; 2 is a locking tongue; 21 is a connecting groove; 211 is a slot; 3 is a driving component; 31 is a worm gear; 4 is a sliding rod; 41 is a second connecting hole; 42 is a positioning groove; 43 is a protrusion; 44 is a third connecting hole; 45 is a first connecting post; 5 is a slider; 51 is a pressing part; 52 is a second connecting post; 53 is a fourth connecting hole; 6 is a connecting rod; 61 is a groove; 611 is a first connecting hole; 612 is a positioning block; 7 is a guide block; 71 is a guide groove; 72 is a pressing piece; 8 is a transmission assembly; 81 is a worm gear; 82 is a driving gear; 83 is a driven gear; 831 is an arc groove. Detailed Implementation

[0028] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figure 1-8 As shown, a vehicle-mounted ceiling screen latch detection device includes a circuit board 1, two oppositely arranged latches 2, and a driving component 3 for driving the two latches 2 to move towards or away from each other. The circuit board 1 is provided with a first micro switch 11 and a second micro switch 11, and also includes two sliding rods 4 located between the two latches 2. The opposite ends of the two sliding rods 4 cooperate with the driving component 3 to drive the two sliding rods 4 to move towards or away from each other. The opposite ends of the two sliding rods 4 extend to the corresponding latches 2 to drive the latches 2 to swing. The circuit board 1 is located on one side of the two sliding rods 4, and a slider 5 that slides synchronously with one of the sliding rods 4 is connected to it. The slider 5 is located between the two micro switches. The first micro switch 11 and the second micro switch 11 are respectively located on the upper and lower sides of the circuit board 1. The contacts of the two micro switches extend towards the sliding rods 4. The slider 5 is located between the two contacts, and the slider 5 has a stop corresponding to the contact position. The pressing part 51 triggers either the first micro switch 11 or the second micro switch 11 when the sliding rod 4 slides. The driving component 3 drives the two sliding rods 4 to slide synchronously, thereby causing the two locking tongues 2 to move towards or away from each other, realizing the opening or closing of the locking tongues 2. When the sliding rod 4 slides, the slider 5 slides synchronously with the sliding rod 4 and triggers either the first micro switch 11 or the second micro switch 11 set on the circuit board 1. After the micro switch is triggered, the locking tongue 2 is detected in position, avoiding the ceiling screen from starting to rotate before the locking tongue 2 is in position, simplifying the complexity of locking tongue 2 position detection. By setting both micro switches for locking tongue 2 position detection on one circuit board 1, the number of parts can be reduced and the cost can be lowered without affecting the detection effect. Furthermore, the two micro switches are respectively set on the upper and lower sides of the circuit board 1, causing the slider 5 to trigger the micro switch only from one direction, preventing misoperation and ensuring the accuracy of signal triggering.

[0033] The upper end of the latch 2 is a hinged end, equipped with a hinge shaft and a return torsion spring. The hinged end is hinged to the ceiling mount or other location (not shown in the figure). A connecting groove 21 is provided in the middle of the latch 2. The connecting groove 21 has an opening 211 on the side facing the drive member 3 for the sliding rod 4 to extend into. A connecting rod 6 is provided inside the connecting groove 21. The outer circumferential surface of the connecting rod 6 abuts against the two side walls of the connecting groove 21. The sliding rod 4 is fixedly connected to the connecting rod 6 so that the latch 2 swings when the sliding rod 4 slides. When the two sliding rods 4 move in opposite directions, the sliding rod 4 will drive the connecting rod 6 connected to it to move synchronously. Because the outer circumferential surface of the connecting rod 6 abuts against the side wall of the connecting groove 21, ... This causes the latch 2 to swing around the hinge end, thus opening the latch 2. When moving in the opposite direction, the latch 2 closes. The connecting rod 6 has a groove 61, and the bottom of the groove 61 has a first connecting hole 611. The side wall of the groove 61 has two positioning blocks 612 arranged opposite to each other. The sliding rod 4 has a second connecting hole 41 and two positioning grooves 42. The second connecting hole 41 is coaxially arranged with the first connecting hole 611 and is fixed with fasteners. The two positioning blocks 612 are engaged in the corresponding positioning grooves 42, so that the connection between the sliding rod 4 and the connecting rod 6 is firm, which further improves the stability between the sliding rod 4 and the latch 2, avoids separation, and prevents the latch 2 from working.

[0034] It also includes at least two guide blocks 7, each guide block 7 is arranged sequentially along the sliding direction of the sliding rod 4 and is located at both ends of the driving member 3. The guide blocks 7 are sleeved on the outer periphery of the sliding rod 4. The sliding rod 4 slides relative to the guide blocks 7 under the action of the driving member 3, which plays a guiding role. When the sliding rod 4 slides, the structure is stable and has good stability. The driving block is fixedly installed in the ceiling component or other positions by screws. The sliding rod is provided with a protrusion 43. The guide block 7 is provided with a guide groove 71 along the sliding direction of the sliding rod 4. The cross-section of the guide groove is convex. The guide block 7 is also provided with a "V" shaped pressing piece 72. The pressing piece 72 presses against the protrusion 43, which can limit the movement range of the sliding rod 4 and ensure that it moves on the predetermined trajectory and avoids deviating from the normal path.

[0035] The driving component 3 is a motor. The driving component 3 is connected to the circuit board 1. A transmission assembly 8 is provided between the motor and the sliding rod 4. The transmission assembly 8 includes a worm gear 81, a driving gear 82, and a driven gear 83. The worm gear 81 meshes with a worm 31 located on the output shaft of the motor. The driving gear 82 is coaxially arranged with the worm gear 81 and meshes with the driven gear 83. The driven gear 83 has two symmetrically arranged arc-shaped grooves 831. The two sliding rods 4 are provided with first connecting posts 45. The first connecting posts 45 are located in the corresponding arc-shaped grooves 831 and slide relative to each other in the arc-shaped grooves 831. The axial motion of the motor is converted into axial motion through the transmission assembly 8. The two sliding rods 4 can be driven synchronously by one driving component 3, which has high transmission efficiency. The motor and the transmission assembly are provided with a cover. The cover has a groove corresponding to the position of the first connecting post. The first connecting post slides in the groove.

[0036] The sliding rod 4, to which the slider 5 is connected, is provided with a plurality of third connecting holes 44. The slider 5 is provided with a plurality of second connecting posts 52 and a plurality of fourth connecting holes 53. The second connecting posts 52 are inserted into some of the third connecting holes 44. The fourth connecting holes 53 are coaxially arranged with the third connecting holes 44. Screws are inserted into the connecting holes to fix the slider 5 to the sliding rod 4, so that the structure between the slider 5 and the sliding rod 4 is firm and the connection between the two is convenient.

Claims

1. A vehicle-mounted ceiling screen latch detection device, comprising a circuit board (1), two oppositely arranged latches (2), and a driving component (3) for driving the two latches (2) to move towards each other or away from each other, wherein the circuit board (1) is provided with a first micro switch (11) and a second micro switch (12), characterized in that, It also includes two sliding rods (4) located between the two latches (2). The opposite ends of the two sliding rods (4) cooperate with the driving member (3) to drive the two sliding rods (4) to move towards each other or away from each other. The opposite ends of the two sliding rods (4) extend to the corresponding latches (2) to drive the latches (2) to swing. The circuit board (1) is located on one side of the two sliding rods (4). One of the sliding rods (4) is connected to a slider (5) that slides synchronously with it. The slider (5) is located between two micro switches. The first micro switch (11) and the second micro switch (12) are respectively located on the upper and lower sides of the circuit board (1). The contacts of the two micro switches extend towards the sliding rods (4). The slider (5) is located between the two contacts, and the slider (5) is provided with a pressing part (51) at the corresponding contact position to trigger the first micro switch (11) or the second micro switch (12) when the sliding rod (4) slides.

2. The vehicle-mounted ceiling screen latch detection device according to claim 1, characterized in that, The upper end of the latch (2) is a hinge end. A connecting groove (21) is provided in the middle of the latch (2). The connecting groove (21) is provided with a slot (211) for the sliding rod (4) to extend into on the side facing the drive member (3). A connecting rod (6) is provided in the connecting groove (21). The outer circumferential surface of the connecting rod (6) abuts against the two side walls of the connecting groove (21). The sliding rod (4) is fixedly connected to the connecting rod (6) so as to drive the latch (2) to swing when the sliding rod (4) slides.

3. The vehicle-mounted ceiling screen latch detection device according to claim 2, characterized in that, The connecting rod (6) has a groove (61) and a first connecting hole (611) at the bottom of the groove (61). Two positioning blocks (612) are arranged opposite to each other on the side wall of the groove (61). The sliding rod (4) has a second connecting hole (41) and two positioning grooves (42). The second connecting hole (41) is coaxial with the first connecting hole (611) and is fixed with fasteners. The two positioning blocks (612) are locked in the corresponding positioning grooves (42).

4. The vehicle-mounted ceiling screen latch detection device according to claim 1 or 2, characterized in that, It also includes at least two guide blocks (7), each guide block (7) is arranged sequentially along the sliding direction of the sliding rod (4) and is located at both ends of the driving member (3). The guide block (7) is sleeved on the outer periphery of the sliding rod (4), and the sliding rod (4) slides relative to the guide block (7) under the action of the driving member (3).

5. The vehicle-mounted ceiling screen latch detection device according to claim 4, characterized in that, The sliding rod is provided with a protrusion (43), and the guide block (7) is provided with a guide groove (71) along the sliding direction of the sliding rod (4). The cross-section of the guide groove is convex. The guide block (7) is also provided with a pressing piece (72) in the shape of "V". The pressing piece (72) presses against the protrusion (43).

6. The vehicle-mounted ceiling screen latch detection device according to claim 1 or 2, characterized in that, The driving component (3) is equipped with a motor. The driving component (3) is connected to the circuit board (1). A transmission assembly (8) is provided between the motor and the sliding rod (4). The transmission assembly (8) includes a worm gear (81), a driving gear (82), and a driven gear (83). The worm gear (81) meshes with a worm (31) on the output shaft of the motor. The driving gear (82) is coaxially arranged with the worm gear (81) and meshes with the driven gear (83). The driven gear (83) is provided with two symmetrically arranged arc grooves (831). The two sliding rods (4) are provided with a first connecting post (45). The first connecting post (45) is located in the corresponding arc groove (831) and slides relative to the arc groove (831).

7. The vehicle-mounted ceiling screen latch detection device according to claim 1 or 2, characterized in that, The sliding rod (4) connected to the slider (5) is provided with a number of third connecting holes (44). The slider (5) is provided with a number of second connecting posts (52) and a number of fourth connecting holes (53). The second connecting posts (52) are inserted into some of the third connecting holes (44). The fourth connecting holes (53) are coaxially arranged with the third connecting holes (44), and screws are inserted in the connecting holes to fix the slider (5) to the sliding rod (4).

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