A lock tongue mechanism for a vehicle-mounted ceiling screen

Abstract

The utility model discloses a kind of vehicle-mounted ceiling screen lock tongue mechanisms, including shell, motor, gear module and lock tongue;The motor and the gear module are arranged in the shell, the lock tongue part is slidably arranged in the shell, the motor is driven by the transmission of the gear module, and the lock tongue can be driven to do telescopic action in the shell.The utility model realizes locking when the vehicle-mounted ceiling screen is retracted, avoids screen shaking due to road bumps, sudden braking and other situations during vehicle driving, thereby effectively preventing screen from colliding with other components due to shaking, causing screen scratches, even screen internal circuit loosening or damage;And prevent screen from accidentally unfolding to interfere with driver's vision or distract attention, thereby improving driving safety.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle ceiling screen technology, specifically, it relates to a locking tongue mechanism for vehicle ceiling screen. Background Technology

[0002] With social development and the improvement of people's living standards, cars have become an essential means of transportation. In order to better meet the needs of users, electronic ceiling screens for entertainment, learning, and work are often added to cars. To save interior space and protect the screen, the screen is usually designed to be hidden by using a flip or folding structure to achieve the hidden effect and unfold as needed. However, this design means that when the vehicle is in motion, road bumps, sudden braking, and other situations can cause the screen to shake. This shaking may not only cause the screen to unfold unexpectedly, interfering with the driver's vision or distracting their attention and increasing driving risks, but may also cause the screen to collide with other components. This can result in scratches on the screen surface or, in severe cases, loosening or damaging the internal wiring, affecting the normal display of the screen, or even rendering the screen unusable. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model aims to provide a vehicle-mounted ceiling screen locking tongue mechanism to lock the ceiling screen in the retracted state and prevent it from shaking while the vehicle is in motion.

[0004] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0005] A vehicle-mounted ceiling screen latch mechanism includes a housing, a motor, a gear module, and a latch; the motor and the gear module are disposed within the housing, and the latch portion passes through the housing; the motor, through the transmission of the gear module, can drive the latch to extend and retract within the housing.

[0006] Furthermore, the housing includes an upper housing and a lower housing.

[0007] Furthermore, the lower housing is provided with fixed feet around its perimeter, and shock-absorbing pads are provided inside the fixed feet.

[0008] Furthermore, the motor is a servo motor.

[0009] Furthermore, the gear module includes a first-stage driving worm gear, a first gear set, a second gear set, and an output gear set that are sequentially meshed together; the first-stage driving worm gear is sleeved on the output shaft of the motor, and the first gear set, the second gear set, and the output gear set are rotatably disposed within the housing via corresponding pins.

[0010] Furthermore, the first gear set consists of a first-stage driven gear and a second-stage driving gear.

[0011] Furthermore, the second gear set consists of a second-stage driven gear and a third-stage driving gear.

[0012] Furthermore, the output gear set consists of a three-stage driven gear and an output gear.

[0013] Furthermore, the latch is L-shaped, wherein the horizontal connecting rod of the latch is slidably inserted into the housing, and a row of teeth is formed on the horizontal connecting rod of the latch; while a locking block is provided on the vertical connecting rod of the latch.

[0014] Furthermore, a guide block is provided on the vertical connecting rod of the locking tongue, and a guide hole is provided on the guide block.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model enables the in-vehicle ceiling screen to be locked in the retracted state, preventing the screen from shaking due to road bumps, sudden braking, etc. during vehicle operation. This effectively prevents the screen from colliding with other components due to shaking, causing scratches on the screen, or even loosening or damaging the internal wiring of the screen; and prevents the screen from accidentally unfolding and interfering with the driver's vision or distracting attention, thereby improving driving safety.

[0017] 2. This utility model uses multi-stage gear transmission to smoothly and efficiently transmit the power of the motor to the locking tongue, making the extension and retraction of the locking tongue more precise and reliable, and ensuring the smooth progress of locking and unlocking actions.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the mechanism of this utility model;

[0021] Figure 2 This is a schematic diagram of the present invention with the upper shell removed;

[0022] Figure 3 This is a schematic diagram of the gear module structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the locking tongue structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the locking tongue mechanism of this utility model;

[0025] Figure 6 This is a schematic diagram of the unlocked state of the locking tongue mechanism of this utility model.

[0026] The following are the labels in the diagram: 1. Housing; 2. Motor; 3. Gear module; 4. Locking tongue; 5. Shock-absorbing pad; 101. Upper housing; 102. Lower housing; 103. Fixed foot; 31. First-stage driving worm gear; 32. First gear set; 33. Second gear set; 34. Output gear set; 321. First-stage driven gear; 322. Second-stage driving gear; 331. Second-stage driven gear; 332. Third-stage driving gear; 341. Third-stage driven gear; 342. Output gear; 41. Tooth; 42. Locking block; 43. Guide block; 431. Guide hole. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] See Figure 1-2 As shown, a vehicle-mounted ceiling-mounted screen locking mechanism includes a housing 1, a motor 2, a gear module 3, and a locking tongue 4. The housing 1 includes an upper housing 101 and a lower housing 102. The upper housing 101 and the lower housing 102 are positioned by a positioning pin and then locked by a locking bolt. After the two are connected, the motor 2 and the gear module 3 are disposed within the space formed by the upper housing 101 and the lower housing 102, and the locking tongue 4 partially passes through the space formed by the upper housing 101 and the lower housing 102. In use, the motor 2, through the transmission of the gear module 3, can drive the locking tongue 4 to extend and retract between the upper housing 101 and the lower housing 102. In this embodiment, the motor 2 is a servo motor.

[0030] Furthermore, in this embodiment, see Figure 1-2As shown, the lower housing 102 has fixing feet 103 formed around its perimeter, and shock-absorbing pads 5 are provided inside the fixing feet 103. During installation, the corresponding locking screws pass through the shock-absorbing pads 5 and are tightened to fix the lower housing 102, thereby achieving the fixed installation of this mechanism. The shock-absorbing pads 5 effectively prevent the mechanism from vibrating during operation. In this embodiment, the shock-absorbing pads 5 are made of rubber.

[0031] Furthermore, in this embodiment, see Figure 3 As shown, the gear module 3 includes a first-stage driving worm gear 31, a first gear set 32, a second gear set 33, and an output gear set 34 that are sequentially meshed together. During installation, the first-stage driving worm gear 31 is sleeved on the output shaft of the motor 2. The first gear set 32, the second gear set 33, and the output gear set 34 are rotatably disposed between the upper housing 101 and the lower housing 102 through corresponding pins, and the output gear set 34 is connected to the locking tongue 4.

[0032] See also Figure 3 As shown, the first gear set 32 ​​consists of a first-stage driven gear 321 and a second-stage driving gear 322, wherein the first-stage driven gear 321 meshes with the first-stage driving worm gear 31 to form a worm gear transmission; the second gear set 33 consists of a second-stage driven gear 331 and a third-stage driving gear 332, wherein the second-stage driven gear 331 meshes with the second-stage driving gear 322; and the output gear set 34 consists of a third-stage driven gear 341 and an output gear 342, wherein the third-stage driven gear 341 meshes with the third-stage driving gear 332.

[0033] Furthermore, in this embodiment, see Figure 4As shown, the latch 4 is L-shaped, with its horizontal connecting rod slidably passing through the housing 1, and a row of teeth 41 formed on the horizontal connecting rod. A locking block 42 is provided on the vertical connecting rod of the latch 4. When the horizontal connecting rod of the latch 4 passes through the housing 1, the teeth 41 mesh with the output gear 342. In use, the output gear 342 drives the latch 4 to extend and retract between the upper housing 101 and the lower housing 102 via the teeth 41, thereby achieving the desired locking action. The locking block 42 extends into or retracts from the locking hole formed inside the vehicle ceiling screen, thereby achieving locking or unlocking. In this embodiment, to prevent the locking tongue 4 from shifting during extension and retraction, a guide block 43 is also provided on the vertical connecting rod of the locking tongue 4. The guide block 43 is provided with a guide hole 431, which is an elongated hole with its length direction parallel to the extension and retraction direction of the locking tongue 4. In use, the guide hole 431 cooperates with the guide shaft provided on the vehicle ceiling screen to guide the extension and retraction of the locking tongue 4.

[0034] The working principle of this utility model is as follows:

[0035] See Figure 5-6 As shown in the figure (A represents the vehicle-mounted ceiling screen; B represents the locking hole; C represents the guide shaft; D represents the mechanism), a set of this mechanism is first set on both sides of the vehicle-mounted ceiling screen.

[0036] In use, when the vehicle ceiling screen is retracted, the motor 2 starts, driving the first-stage active worm gear 31 to rotate. This, through the first gear set 32, the second gear set 33, and the output gear set 34, drives the horizontal connecting rod of the locking tongue 4 to retract into the housing 1, thereby causing the locking block 42 to extend into the locking hole, thus locking the vehicle ceiling screen in place. When the vehicle ceiling screen needs to be unfolded, the motor 2 starts and reverses, driving the horizontal connecting rod of the locking tongue 4 to extend out of the housing 1, thereby causing the locking block 42 to exit from the locking hole, thus unlocking the vehicle ceiling screen.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking tongue mechanism for a vehicle-mounted ceiling-mounted screen, characterized in that: It includes a housing (1), a motor (2), a gear module (3), and a locking tongue (4); the motor (2) and the gear module (3) are disposed inside the housing (1), and the locking tongue (4) is partially inserted inside the housing (1). The motor (2) can drive the locking tongue (4) to extend and retract inside the housing (1) through the transmission of the gear module (3).

2. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 1, characterized in that: The housing (1) includes an upper housing (101) and a lower housing (102).

3. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 2, characterized in that: The lower housing (102) has fixed feet (103) formed around its perimeter, and shock-absorbing pads (5) are provided inside the fixed feet (103).

4. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 1, characterized in that: The motor (2) is a servo motor.

5. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 1, characterized in that: The gear module (3) includes a first-stage driving worm (31), a first gear set (32), a second gear set (33), and an output gear set (34) that are meshed together in sequence; the first-stage driving worm (31) is sleeved on the output shaft of the motor (2), and the first gear set (32), the second gear set (33), and the output gear set (34) are rotatably disposed in the housing (1) through corresponding pins.

6. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 5, characterized in that: The first gear set (32) consists of a first-stage driven gear (321) and a second-stage driving gear (322).

7. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 5, characterized in that: The second gear set (33) consists of a second-stage driven gear (331) and a third-stage driving gear (332).

8. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 5, characterized in that: The output gear set (34) consists of a three-stage driven gear (341) and an output gear (342).

9. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 1, characterized in that: The latch (4) is L-shaped, wherein the horizontal connecting rod of the latch (4) is slidably inserted into the housing (1), and a row of teeth (41) is provided on the horizontal connecting rod of the latch (4); and a locking block (42) is provided on the vertical connecting rod of the latch (4).

10. The vehicle-mounted ceiling screen locking tongue mechanism according to claim 9, characterized in that: The vertical connecting rod of the latch (4) is also provided with a guide block (43), and the guide block (43) is provided with a guide hole (431).

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