Rotary spring bolt control mechanism used on automobile ceiling screen

Abstract

The utility model relates to a rotary lock tongue control mechanism used on an automobile ceiling screen, which comprises a carrying seat, a connecting rod, a power lock tongue and a positioning lock tongue, the connecting rod is rotatably arranged on the carrying seat, a pair of lock tongues are respectively arranged at the left end and the right end of the connecting rod, and the lower ends of the pair of lock tongues can synchronously swing backwards to realize locking or swing forwards to realize unlocking; the lock further comprises a circuit board and a power actuator, the power actuator drives the power lock tongue or the connecting rod to rotate, a first microswitch and a second microswitch are arranged on the circuit board, and a first contact and a second contact are arranged on the positioning lock tongue and correspond to the microswitches. The first microswitch is pressed by the first contact, and the power actuator stops working; when the lower ends of the pair of lock tongues swing forwards in place, the second microswitch is pressed by the second contact, and the power actuator stops working. A pair of lock tongues can be driven at the same time to lock or unlock the display screen, the linkage performance is high, and the current lock tongue state is monitored through the microswitch.

Description

Technical Field

[0001] The utility model relates to the technical field of locking a car display screen, in particular to a rotating lock tongue control mechanism. Background Art

[0002] The existing locking tongue mechanism of the vehicle-mounted ceiling display screen is generally a dual-motor dual-lock tongue or a single-motor single-lock tongue. The lock tongue moves in and out directly. The dual-motor dual-lock tongue mechanism is expensive and has asynchronous control and sound. The single-motor single-lock tongue mechanism is used to lock the display screen unbalancedly. There is also no corresponding equipment to monitor and identify whether the lock tongue is successfully opened or closed. Utility Model Content

[0003] The purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a rotating lock tongue control mechanism for a car ceiling screen, which can simultaneously drive a pair of lock tongues to lock or unlock the display screen, has strong linkage, and can monitor the current lock tongue status through a micro switch.

[0004] The technical solution of the utility model is a rotating lock tongue control mechanism for automobile ceiling screens, comprising a carrier, a connecting rod, a power lock tongue and a positioning lock tongue. The connecting rod is rotatably arranged on the carrier, and a pair of lock tongues are respectively mounted on the left and right ends of the connecting rod and linked with the connecting rod. The lower ends of the pair of lock tongues can be synchronously swung backward to lock or swung forward to unlock.

[0005] It also includes a circuit board and a power actuator, which directly or indirectly drives the power lock tongue or connecting rod to rotate. A micro switch 1 and a micro switch 2 are also provided on the circuit board. The corresponding micro switches on the positioning lock tongue have contacts 1 and 2. When the lower ends of a pair of lock tongues swing backward into place, contact 1 touches the micro switch 1 and stops the power actuator; when the lower ends of the pair of lock tongues swing forward into place, contact 2 touches the micro switch 2 and stops the power actuator.

[0006] By adopting the above technical solution, a pair of lock tongues can be driven simultaneously to lock or unlock the display screen with strong linkage; and after the positioning lock tongue is opened and closed in place, it will trigger the micro switch on the circuit board, and the trigger switch will output a lock tongue in place signal to realize monitoring.

[0007] Preferably, the upper end of the positioning lock tongue is mounted on the connecting rod, and has a pressing head protruding toward the rear side of the circuit board at its upper end, two contacts are respectively provided at the upper and lower ends of the pressing head, and two micro switches are respectively provided at the upper and lower end surfaces of the circuit board, so that the contacts can press the corresponding micro switches in the upper and lower directions.

[0008] Preferably, the two contacts are spaced vertically to form a gap, the circuit board is located between the two contacts and has a contact clearance opening, and the two micro switches are located on the left and right sides of the clearance opening, with the trigger ends of the micro switches corresponding to the clearance openings. The contact clearance opening also facilitates the upward and downward movement of the contacts to press the trigger ends of the corresponding micro switches.

[0009] Preferably, the middle portion of the power lock tongue is mounted on a connecting rod, and the upper end thereof also has a dial head, and a dial wheel is provided on the rear side of the dial head. The dial wheel is driven to rotate by a power actuator, and an elastic member provides driving force for the dial head at the upper end of the power lock tongue to abut against the front side of the dial wheel. The dial wheel has a convex and concave portion on its circumference. When the convex portion turns toward the dial head and pushes it forward, it can drive the lower ends of a pair of lock tongues to swing backward synchronously; when the concave portion turns toward the power lock tongue, it is driven by the elastic member to drive the lower ends of the pair of lock tongues to swing forward synchronously. The middle portion of the power lock tongue serves as the rotation center, the dial head at the upper end is used to contact the dial wheel, and the lower end is used to lock or unlock the display screen. The upper dial head and the lower end of the power lock tongue swing in opposite directions.

[0010] Preferably, the protrusion is arc-shaped, and the thickness of the protrusion gradually increases on the circumferential surface of the dial wheel, so that when the dial wheel rotates, the protrusion can gradually push the dial head of the force lock tongue forward.

[0011] Preferably, the elastic member is a torsion spring, which is sleeved on the connecting rod. The rear end of the torsion spring is inserted into the notch of the corresponding carrier and the front end is inserted into the positioning groove at the lower end of the lock tongue, thereby providing a forward thrust for the lock tongue. The torsion spring directly acts on the lower end of the lock tongue to facilitate driving the lower end of the lock tongue to swing forward.

[0012] Preferably, torsion springs are installed on both the left and right ends of the connecting rod, and the two torsion springs act on the lower ends of the respective lock tongues, thereby driving the pair of lock tongues to rotate and return to their original positions.

[0013] Preferably, the power actuator includes a motor, a gear shaft 1 and a gear shaft 2, the gear shaft 1 is arranged close to the connecting rod, and a shaft sleeve is provided on each of the two gear shafts. The shaft sleeve of the gear shaft 1 has the thumbwheel and the driven gear arranged side by side, and the shaft sleeve of the gear shaft 2 has the driving gear and the turbine arranged side by side. The driving gear is engaged with the driven gear in front, and the turbine is engaged with the worm provided at the output end of the rear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a specific embodiment of the utility model;

[0015] Figure 2 This is a diagram showing the installation structure of the positioning lock tongue in a specific embodiment of the present utility model;

[0016] Figure 3 This is a structural diagram of the positioning lock tongue in a specific embodiment of the utility model;

[0017] Figure 4 This is a structural diagram of a circuit board in a specific embodiment of the present utility model;

[0018] Figure 5 This is a diagram of the installation structure of the power lock tongue in a specific embodiment of the utility model;

[0019] Figure 6 This is a structural diagram of a power lock tongue in a specific embodiment of the utility model;

[0020] Figure 7 This is a structural diagram of the thumbwheel in a specific embodiment of the present utility model.

[0021] In the figure: carrier 1, notch 11, connecting rod 2, power lock tongue 3, dial head 31, positioning lock tongue 4, pressure head 4a, contact 1 41, contact 2 42, circuit board 5, contact avoidance opening 5a, micro switch 1 51, micro switch 2 52, power actuator 6, motor 61, gear shaft 1 62, gear shaft 2 63, driven gear 64, driving gear 65, turbine 66, worm 67, dial wheel 7, protrusion 71, inner concave position 72 elastic member 8, positioning groove A, sleeve B. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] like Figure 1-7 As shown, the utility model is a rotating lock tongue control mechanism for a car ceiling screen, comprising a carrier 1, a connecting rod 2, a power lock tongue 3 and a positioning lock tongue 4. The connecting rod 2 is rotatably arranged on the carrier 1, and a pair of lock tongues are respectively mounted on the left and right ends of the connecting rod and linked with the connecting rod 2. The lower ends of the pair of lock tongues can be synchronously swung backward to lock or swung forward to unlock. The lower ends of the lock tongues are used to lock the display screen;

[0024] It also includes a circuit board 5 and a power actuator 6, which directly or indirectly drives the power lock tongue 3 or the connecting rod 2 to rotate. A micro switch 1 51 and a micro switch 2 52 are also provided on the circuit board 5. The corresponding micro switches on the positioning lock tongue 4 have a contact 1 41 and a contact 2 42. When the lower ends of a pair of lock tongues swing backward into place, the contact 1 41 touches the micro switch 1 51 and stops the power actuator 6; when the lower ends of the pair of lock tongues swing forward into place, the contact 2 42 touches the micro switch 2 52 and stops the power actuator 6.

[0025] Specifically, the upper end of the positioning latch 4 is mounted on the connecting rod 2 and has a pressure head 4a protruding rearward toward the circuit board. Two contacts are located at the upper and lower ends of the pressure head 4a, and two microswitches are located at the upper and lower ends of the circuit board 5. The two contacts are spaced apart to form a clamping opening. The circuit board 5 is located between the two contacts and has a contact clearance opening 5a. The two microswitches are also located on the left and right sides of the clearance opening 5a, with the trigger ends of the micro switches corresponding to the clearance opening 5a.

[0026] Specifically, the middle part of the power lock tongue 3 is mounted on the connecting rod 2, and a dial head 31 is also provided at its upper end. A dial wheel 7 is provided on the rear side of the dial head 31. The dial wheel 7 is driven to rotate by the power actuator 6. The power actuator 6 includes a motor 61, a gear shaft 1 62 and a gear shaft 2 63. The gear shaft 1 62 is arranged close to the connecting rod 2. A shaft sleeve B is provided on the two gear shafts. The shaft sleeve B of the gear shaft 1 62 has the dial wheel 7 and the driven gear 64 arranged side by side. The shaft sleeve B of the gear shaft 2 63 has a driving gear 65 and a turbine 66 arranged side by side. The driving gear 65 is engaged with the driven gear 64 in front, and the turbine 66 is engaged with the worm 67 provided at the output end of the rear motor 61; or the motor is directly coaxially connected to the dial wheel 7, or the motor is connected to the connecting rod 2 through a gear set.

[0027] The elastic member 8 also provides driving force for the dial head 31 at the upper end of the power lock tongue to abut against the front side of the dial wheel 7.

[0028] The dial wheel 7 has a protrusion 71 and a recessed portion 72 around its circumference. When the protrusion 71 turns toward the upper end of the power lock tongue 3 and pushes it forward, it can cause the lower ends of the pair of lock tongues to swing backward synchronously. When the recessed portion 72 turns toward the upper end of the power lock tongue 3, it is driven by the elastic member 8 to cause the lower ends of the pair of lock tongues to swing forward synchronously. The protrusion 71 is arc-shaped, and its thickness gradually increases along the circumferential surface of the dial wheel 7. The protrusion is integrally formed on the circumferential surface of the dial wheel 7.

[0029] Specifically, the elastic member 8 is a torsion spring, which is mounted on the connecting rod 2. The rear end of the torsion spring engages with the corresponding notch 11 of the carrier 1, and the front end of the torsion spring is inserted into the positioning groove A at the lower end of the lock tongue, thereby providing forward thrust for the lock tongue. A torsion spring is installed on both the left and right ends of the connecting rod 2, and each torsion spring acts on the lower end of its respective lock tongue. The lower ends of both lock tongues have a positioning groove.

[0030] The above-mentioned motor may be a bidirectional motor.

[0031] Working principle: The power actuator 6 drives the dial wheel 7 to rotate. When the dial wheel 7 rotates counterclockwise, the protrusion 71 will gradually turn to the dial head 31, and the thickness of the protrusion 71 in contact with the dial head 31 will gradually increase. At this time, the dial head 31 of the power lock tongue 3 will gradually swing forward. Since the pair of lock tongues are driven by the connecting rod 2, the lower ends of the pair of lock tongues will swing backward at the same time, thereby locking under the screen;

[0032] When the dial wheel 7 rotates clockwise, it turns from the inner concave position 72 to the dial head 31, and the protrusion 71 gradually rotates away from the dial head 31, causing the thickness of the protrusion 71 in contact with the dial head 31 to gradually decrease or become 0 (it is also not necessary for the protrusion to completely rotate away from the dial head, as long as there is enough space for the dial head to swing backward to achieve unlocking). The action of the torsion spring will cause the lower ends of the pair of lock tongues to swing forward synchronously to unlock, and the screen can be flipped down to open. At this time, the dial head 31 is gradually swinging backward.

[0033] When the protrusion is spherical, the dial head can be completely rotated away from the protrusion and located in the inner concave position, thereby avoiding being pushed outward by the protrusion.

[0034] During the swinging process, after the lower end of the positioning lock tongue 4 swings back and forth to open and close in place, the pressure head 4a at its upper end swings up and down, and the contact 1 41 and the contact 2 42 respectively trigger the corresponding micro switches on the circuit board, and the trigger switch outputs the lock tongue open and close in place signal to realize monitoring.

[0035] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "coupled," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to the rear connection of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A rotary lock tongue control mechanism for a car ceiling screen, characterized in that: The invention comprises a carrier (1), a connecting rod (2), a power lock tongue (3) and a positioning lock tongue (4), wherein the connecting rod (2) is rotatably arranged on the carrier (1), a pair of lock tongues are respectively mounted on the left and right ends of the connecting rod and are linked to the connecting rod (2), and the lower ends of the pair of lock tongues can be synchronously swung backward to achieve locking or swung forward to achieve unlocking; The invention also includes a circuit board (5) and a power actuator (6), which directly or indirectly drives the power lock tongue (3) or the connecting rod (2) to rotate. A micro switch 1 (51) and a micro switch 2 (52) are also provided on the circuit board (5). The corresponding micro switches on the positioning lock tongue (4) have a contact 1 (41) and a contact 2 (42). When the lower ends of the pair of lock tongues swing backward to a position, the contact 1 (41) touches the micro switch 1 (51) and stops the power actuator (6); when the lower ends of the pair of lock tongues swing forward to a position, the contact 2 (42) touches the micro switch 2 (52) and stops the power actuator (6).

2. The rotary lock tongue control mechanism for a car ceiling screen according to claim 1, characterized in that: The upper end of the positioning lock tongue (4) is mounted on the connecting rod (2), and has a pressure head (4a) protruding toward the rear circuit board side at its upper end, two contacts are respectively arranged at the upper and lower ends of the pressure head (4a), and two micro switches are respectively arranged at the upper and lower end surfaces of the circuit board (5).

3. The rotary lock tongue control mechanism for a car ceiling screen according to claim 2, characterized in that: The two contacts are spaced apart from each other to form a clamping opening. The circuit board (5) is located between the two contacts and has a contact avoidance opening (5a). The two micro switches are also arranged on the left and right sides of the avoidance opening (5a), and the triggering ends of the micro switches correspond to the avoidance opening (5a).

4. A rotary lock tongue control mechanism for a car ceiling screen according to claim 1, 2 or 3, characterized in that: The middle part of the power lock tongue (3) is mounted on the connecting rod (2), and the upper end thereof is also provided with a dial head (31). A dial wheel (7) is provided on the rear side of the dial head (31). The dial wheel (7) is driven to rotate by the power actuator (6). The elastic member (8) provides a driving force for the dial head (31) at the upper end of the power lock tongue to abut against the front side of the dial wheel (7). The dial wheel (7) has a protrusion (71) and an inner concave position (72) in the circumferential direction. When the protrusion (71) turns to the dial head (31) at the upper end of the power lock tongue (3) and pushes it forward, it can drive the lower ends of a pair of lock tongues to swing backward synchronously; when the inner concave position (72) turns to the dial head (31) at the upper end of the power lock tongue (3), it is driven by the elastic member (8) to drive the lower ends of the pair of lock tongues to swing forward synchronously.

5. The rotary lock tongue control mechanism for a car ceiling screen according to claim 4, characterized in that: The protrusion (71) is arc-shaped, and its thickness gradually increases as it protrudes on the circumferential surface of the thumbwheel (7).

6. The rotary lock tongue control mechanism for a car ceiling screen according to claim 4, characterized in that: The elastic member (8) is a torsion spring, which is sleeved on the connecting rod (2). The rear end of the torsion spring is inserted into the notch (11) of the corresponding carrier (1), and the front end is inserted into the positioning groove (A) at the lower end of the lock tongue, thereby providing a forward thrust for the lock tongue.

7. The rotary lock tongue control mechanism for a car ceiling screen according to claim 6, characterized in that: Torsion springs are installed on both the left and right ends of the connecting rod (2), and the two torsion springs act on the lower ends of their respective lock tongues.

8. The rotary lock tongue control mechanism for a car ceiling screen according to claim 4, characterized in that: The power actuator (6) includes a motor (61), a gear shaft (62) and a gear shaft (63). The gear shaft (62) is arranged close to the connecting rod (2). A shaft sleeve (B) is provided on each of the two gear shafts. The shaft sleeve (B) of the gear shaft (62) has the thumbwheel (7) and the driven gear (64) arranged side by side. The shaft sleeve (B) of the gear shaft (63) has a driving gear (65) and a turbine (66) arranged side by side. The driving gear (65) is meshed with the driven gear (64) in front, and the turbine (66) is meshed with a worm (67) provided at the output end of the rear motor (61).

Images