Spring bolt mechanism used on automobile ceiling screen

Abstract

The utility model relates to a spring bolt mechanism used on an automobile ceiling screen, which comprises a top plate and a driving spring bolt, a ceiling screen mounting area is arranged on the bottom surface of the top plate, and the driving spring bolt is rotatably connected onto the top plate. A locking mechanism capable of driving the driving spring bolt to rotate for locking and a first elastic piece capable of driving the driving spring bolt to rotate for unlocking are further arranged on the top plate, the locking mechanism comprises a top wheel, a second elastic piece and a power motor, and the top wheel and the power motor are in transmission through a gear set; the first elastic piece always drives the driving spring bolt to abut against the periphery of the top wheel, a protrusion and an inner concave position are further arranged on the periphery of the top wheel, and when the protrusion rotates to the driving spring bolt, the protrusion can push the driving spring bolt to enable the driving spring bolt to rotate and be locked. When the inner concave position turns to the driving spring bolt, the driving spring bolt is driven by the first elastic piece to rotate to unlock, and the second elastic piece provides resistance for the inner concave position to turn to the driving spring bolt. And the second elastic piece is added to provide resistance for rotating unlocking of the lock tongue, so that the load change of unloading the screen is compensated.

Description

Technical Field

[0001] The utility model relates to the technical field of lock tongue mechanisms, in particular to a lock tongue mechanism used on an in-vehicle ceiling screen of an automobile. Background Art

[0002] The ceiling screen is an in-vehicle comfort and entertainment device installed on the top of a vehicle for playing multimedia information. The opening methods of the ceiling screen are divided into manual type and electric type. The current structure of the electric ceiling screen includes a top plate, a screen hinged to the bottom surface of the top plate, and a lock tongue for locking the screen. The lock tongue is rotatably connected to the top plate. On the top plate, there is also a locking mechanism capable of driving the lock tongue to rotate and lock, and an elastic member capable of driving the lock tongue to rotate and unlock. The lock tongue rotates to the lower part of the screen and forms a support for it, which can prevent the screen from turning downwards to achieve locking. The lock tongue rotates and moves away, and at this time the screen can be turned downwards to achieve unlocking. In this unlocking and locking structure, since the lock tongue needs to support the screen load when rotating and locking, and the lock tongue unloads the screen load after rotating and unlocking, the load in the unlocking and locking states changes, and the output of the motor is different. Content of the Utility Model

[0003] Objective of the utility model: In order to overcome the defects of the prior art, the utility model provides a lock tongue mechanism used on an in-vehicle ceiling screen of an automobile, and a second elastic member is added to provide resistance for the lock tongue to rotate and unlock, so as to compensate for the load change of the removed screen.

[0004] Technical solution of the utility model: A lock tongue mechanism used on an in-vehicle ceiling screen of an automobile includes a top plate and a main lock tongue. The bottom surface of the top plate has an in-vehicle ceiling screen installation area. The main lock tongue is rotatably connected to the top plate. On the top plate, there is also a locking mechanism capable of driving the main lock tongue to rotate and lock, and a first elastic member capable of driving the main lock tongue to rotate and unlock. The locking mechanism includes a top wheel, a second elastic member and a power motor. The first elastic member always drives the main lock tongue to abut against the outer periphery of the top wheel. There are also a protrusion and a concave position on the outer periphery of the top wheel. When the protrusion turns towards the main lock tongue, it can push the main lock tongue to rotate and lock. When the concave position turns towards the main lock tongue, the main lock tongue is driven by the first elastic member to rotate and unlock, and the second elastic member provides resistance when the concave position turns towards the main lock tongue.

[0005] By adopting the above technical solution, a second elastic member is added to provide resistance for the lock tongue to rotate and unlock, so as to compensate for the load change of the removed screen, so that the load of the lock tongue in unlocking and locking is as consistent as possible, ensuring that the output of the motor remains unchanged or changes slightly, and achieving the consistency of the running speed and noise of the motor.

[0006] Preferably, the protrusion is arc-shaped, and the thickness of the protrusion rising on the circumferential surface of the top wheel gradually increases. When the top wheel rotates, it is convenient to push the lock tongue outwards gradually by the protrusion.

[0007] Preferably, the middle part of the active lock tongue is a hinged part, and the dial head and the lock head are arranged at both ends. The top wheel abuts against the inner side of the dial head, and the protrusion pushes the dial head outward to drive the lock head to rotate inward to lock; the first elastic member is connected to the lock head and can drive the lock head to rotate outward to unlock. The middle part of the active lock tongue is used for hinge connection, the dial head at the upper end is used to contact the top wheel, and the lock head at the lower end is used to connect the first elastic member. The lock tongue structure is reasonably designed.

[0008] Preferably, the top wheel and the power motor are driven by a gear set, the gear set has a meshing active gear and a passive gear, the active gear is driven by the power motor, the passive gear is coaxially connected to the top wheel, and the second elastic member is a torsion spring, which is sleeved on the passive gear, with one end positioned on the top plate and the other end inserted into the positioning hole of the passive gear. The other end of the torsion spring moves with the passive gear, and when the passive gear rotates clockwise, the protrusion gradually turns to the inner concave position, and the torsion spring is compressed to store energy; when the passive gear rotates counterclockwise, the protrusion gradually turns to the lock tongue, and the torsion spring is reset.

[0009] Preferably, a mounting frame is further provided on the top surface of the top plate, and the locking mechanism is mounted on the mounting frame. The mounting frame has two side plates arranged opposite to each other, and an upper plate connecting the two side plates. A first axis and a second axis parallel to each other are further provided between the two side plates. The passive gear and the top wheel are mounted on the first axis, and the active gear is mounted on the second axis. A card plate is further bent back at the lower ends of the two side plates, and each card plate has two "U"-shaped bayonet openings with different opening directions. A card wheel is provided on the top plate corresponding to each bayonet opening, and the card wheel has an annular card groove. The positioning of the mounting frame is achieved by inserting the outer edge of the "U"-shaped bayonet opening into the annular card groove. Since the opening directions of the two "U"-shaped bayonet openings on the card plate are different, the card wheel can be effectively prevented from being disengaged.

[0010] Preferably, a passive lock tongue is rotatably connected to the top plate, and the two lock tongues are driven by a linkage shaft to achieve unlocking or locking by synchronous rotation. A pair of lock tongues has a good effect of locking the screen, and only one set of locking mechanism can make a pair of lock tongues rotate synchronously, which is low in cost.

[0011] Preferably, both ends of the linkage shaft are rotatably disposed on a mounting seat of the top plate, and the first elastic member is a torsion spring, which is sleeved on the linkage shaft, with one end inserted into the notch of the mounting seat and the other end inserted into the positioning groove of the lock tongue. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is one of the structural diagrams of a specific embodiment of the utility model;

[0013] Figure 2 This is the second structural diagram of a specific embodiment of the utility model;

[0014] Figure 3 This is a driving diagram of a pair of lock tongues in a specific embodiment of the utility model;

[0015] Figure 4 This is a driving diagram of the active lock tongue in a specific embodiment of the utility model;

[0016] Figure 5 It is a structural diagram of the top wheel in a specific embodiment of the utility model, wherein s is the maximum thickness of the protrusion;

[0017] Figure 6 This is a structural diagram of a driven gear in a specific embodiment of the utility model;

[0018] Figure 7 It is an assembly diagram of the mounting frame in a specific embodiment of the utility model;

[0019] Figure 8 It is a structural diagram of the mounting frame in a specific embodiment of the utility model;

[0020] Figure 9 It is a structural diagram of the clamping wheel in a specific embodiment of the utility model.

[0021] In the figure: top plate 1, active lock tongue 2, ceiling screen installation area 11, locking mechanism 3, first elastic member 10, top wheel 31, second elastic member 32, power motor 33, gear set 34, protrusion 311, inner recess 312, hinged portion 21, dial head 22, lock head 23, active gear 341, passive gear 342, positioning hole 3421, mounting frame 4, side plate 41, upper plate 42, card plate 43, first shaft 51, second shaft 52, "U"-shaped bayonet 431, card wheel 12, annular card groove 121, passive lock tongue 6, linkage shaft 7, mounting seat 8, notch 81, positioning groove A, turbine worm mechanism B. DETAILED DESCRIPTION

[0022] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1-9As shown in the figure, a locking tongue mechanism for an in-vehicle ceiling screen of the present utility model includes a top plate 1 and a pair of locking tongues. The bottom surface of the top plate 1 has a ceiling screen installation area 11. The pair of locking tongues include an active locking tongue 2 and a passive locking tongue 6. The locking tongues are rotatably connected to the top plate 1, and the two locking tongues are driven by a linkage shaft 7 to rotate synchronously to unlock or lock. On the top plate 1, there is also a locking mechanism 3 that can drive the active locking tongue 2 to rotate and lock, and a first elastic member 10 that can drive the active locking tongue 2 to rotate and unlock. The locking mechanism 3 includes a top wheel 31, a second elastic member 32, and a power motor 33. The top wheel 31 and the power motor 33 are driven by a gear set 34. The gear set 34 has an engaged driving gear 341 and a driven gear 342. The driving gear 341 is driven by the power motor 33. There is also a worm and worm gear mechanism B between the driving gear 341 and the power motor 33. The driven gear 342 is coaxially connected to the top wheel 31. The driven gear 342 and the top wheel 31 are integrally provided and sleeved on the first shaft, or the driven gear 342 and the top wheel 31 are separately sleeved on the first shaft and fixed to achieve synchronous rotation. The second elastic member 32 is a torsion spring. The torsion spring is sleeved on the driven gear 342 or the first shaft, and one end is positioned on the top plate 1, and the other end is inserted into the positioning hole 3421 of the driven gear 342 or on the top wheel. The first elastic member 10 always urges the active locking tongue 2 to abut against the outer circumference of the top wheel 31. The outer circumference of the top wheel 31 also has a protrusion 311 and a concave position 312. The concave position is recessed relative to the protrusion. When the protrusion 311 turns towards the active locking tongue 2, it can push the active locking tongue 2 to rotate and lock. When the concave position 312 turns towards the active locking tongue 2, the active locking tongue 2 is urged by the first elastic member 10 to rotate and unlock. The second elastic member 32 provides resistance when the concave position 312 turns towards the active locking tongue 2. The middle of the active locking tongue 2 is a hinge portion 21, and a dial head 22 and a lock head 23 are respectively arranged at both ends. The top wheel 31 abuts against the inner side of the dial head 22, and the protrusion 311 pushes the dial head 22 outwards to drive the lock head 23 to rotate inwards and lock. The first elastic member 10 is connected to the lock head 23 and can drive the lock head 23 to rotate outwards and unlock. Of course, it can also be that the upper end of the locking tongue is the hinge portion and the lower end is the lock head, and the top wheel abuts against the outside of the lock head.

[0024] The protrusion 311 is arc-shaped, and the thickness of its bulge on the circumferential surface of the top wheel 31 gradually increases. The protrusion 311 can also be spherical.

[0025] Specifically, both ends of the linkage shaft 7 are rotatably arranged on the mounting seat 8 of the top plate. The mounting seat 8 is mounted on the top plate by screws or buckles. The first elastic member 10 is a torsion spring. The torsion spring is sleeved on the linkage shaft 7, and one end is clamped into the notch 81 of the mounting seat 8, and the other end is inserted into the positioning groove A of the locking tongue.

[0026] Specifically, an installation frame 4 is further provided on the top surface of the top plate 1. The locking mechanism 3 is installed on the installation frame 4. The installation frame 4 has two side plates 41 arranged oppositely and an upper plate 42 connecting the two side plates 41. The two side plates and the upper plate are integrally formed. A first shaft 51 and a second shaft 52 parallel to each other are further provided between the two side plates 41. The driven gear 342 and the top wheel 31 are installed on the first shaft 51, and the driving gear 341 is installed on the second shaft 52. The lower ends of the two side plates 41 are bent backward with clamping plates 43. Each clamping plate 43 has two "U" - shaped clamping openings 431 with different opening directions. On the top plate 1, there are clamping wheels 12 corresponding to each clamping opening. The clamping wheel 12 has an annular clamping groove 121. The outer edge of the "U" - shaped clamping opening 431 is clamped into the annular clamping groove 121 to position the installation frame 4.

[0027] The above - mentioned power motor can be a two - way motor, and the motor can also directly drive the top wheel.

[0028] When unlocking, the driving gear 341 is driven by the power motor 33, and the driving gear 341 drives the driven gear 342 to rotate clockwise. Since the second elastic member 32 acts on the driven gear 342 and provides resistance to the clockwise rotation of the driven gear 342, when the top wheel 31 and the driven gear 342 rotate clockwise together, at this time, the concave position 312 turns towards the dial 22, and the protrusion 311 gradually turns away from the dial 22. The thickness of the protrusion 311 in contact with the dial 22 gradually decreases or becomes 0 (it is also possible that the protrusion does not completely turn away from the dial, as long as the space for the inward swing of the dial is sufficient to achieve unlocking). At this time, the dial 22 gradually swings inward, and the lock head 23 swings outward under the action of the first elastic member 10 to unlock, and the screen can be turned down to open.

[0029] When locking, the driving gear 341 is driven by the power motor 33, and the driving gear 341 drives the driven gear 342 to rotate counterclockwise. When the top wheel 31 and the driven gear 342 rotate counterclockwise together, the protrusion 311 gradually turns towards the dial 22, making the thickness of the protrusion 311 in contact with the dial 22 gradually increase. At this time, the dial 22 gradually swings outward, driving the lock head 23 to swing inward to lock, locking the lower part of the screen.

[0030] When the protrusion 311 is spherical, the dial 22 can completely rotate away from the protrusion 311 and be in the concave position 312, thus avoiding being pushed up by the protrusion 311.

[0031] The utility model provides resistance for the rotation of the lock tongue to unlock by adding a second elastic member, thereby compensating for the load change of the removed screen, so that the load of the lock tongue unlocking and locking is as consistent as possible, ensuring that the output of the motor remains unchanged or changes slightly, and achieving consistent speed and noise of the motor operation.

[0032] It should be noted that in the description of the present utility model, all directional indications (such as up, down, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0033] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features.

[0034] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A locking tongue mechanism used in a ceiling-mounted screen of an automobile, comprising a top plate (1) and a driving locking tongue (2). The bottom surface of the top plate (1) has a ceiling-mounted screen installation area (11). The driving locking tongue (2) is rotatably connected to the top plate (1). A locking mechanism (3) capable of driving the driving locking tongue (2) to rotate and lock, and a first elastic member (10) capable of driving the driving locking tongue (2) to rotate and unlock are further provided on the top plate (1). It is characterized in that: The described locking mechanism (3) includes a top wheel (31), a second elastic member (32), and a power motor (33). The first elastic member (10) always urges the active locking tongue (2) to abut against the outer periphery of the top wheel (31). The outer periphery of the top wheel (31) has a protrusion (311) and a concave position (312). When the protrusion (311) turns towards the active locking tongue (2), it can push the active locking tongue (2) to rotate and lock; when the concave position (312) turns towards the active locking tongue (2), the active locking tongue (2) is urged by the first elastic member (10) to rotate and unlock. The second elastic member (32) provides resistance for the concave position (312) to turn towards the active locking tongue (2).

2. The tongue mechanism used on the ceiling screen of an automobile according to claim 1, characterized in that: The protrusion (311) is arc-shaped, and the thickness of its bulge on the circumferential surface of the top wheel (31) gradually increases.

3. The tongue mechanism used in the overhead monitor of an automobile according to claim 1 or 2, characterized in that: The middle of the active locking tongue (2) is a hinge portion (21), and a dial head (22) and a lock head (23) are respectively arranged at both ends. The top wheel (31) abuts against the inner side of the dial head (22), and the protrusion (311) pushes the dial head (22) outwards to drive the lock head (23) to rotate inwards and lock; the first elastic member (10) is connected to the lock head (23) and can drive the lock head (23) to rotate outwards to unlock.

4. The tongue mechanism used in the ceiling screen of an automobile according to claim 3, characterized in that: The top wheel (31) and the power motor (33) are driven by a gear set (34). The gear set (34) has a meshing driving gear (341) and a driven gear (342). The driving gear (341) is driven by the power motor (33), and the driven gear (342) is coaxially connected to the top wheel (31). The second elastic member (32) is a torsion spring, which is sleeved on the driven gear (342), and one end is positioned on the top plate (1), and the other end is inserted into the positioning hole (3421) of the driven gear (342).

5. The tongue mechanism used on the ceiling screen of an automobile according to claim 4, characterized in that: An installation frame (4) is also provided on the top surface of the top plate (1). The locking mechanism (3) is installed on the installation frame (4). The installation frame (4) has two side plates (41) arranged oppositely and an upper plate (42) connecting the two side plates (41). A first shaft (51) and a second shaft (52) parallel to each other are also provided between the two side plates (41). The driven gear (342) and the top wheel (31) are installed on the first shaft (51), and the driving gear (341) is installed on the second shaft (52). The lower ends of the two side plates (41) are bent backwards with clamping plates (43). Each clamping plate (43) has two "U"-shaped clamping openings (431) with different opening directions. The top plate (1) has clamping wheels (12) corresponding to each clamping opening. The clamping wheels (12) have annular clamping grooves (121). The positioning of the installation frame (4) is realized by the outer edge of the "U"-shaped clamping opening (431) being clamped into the annular clamping groove (121).

6. The tongue mechanism used on the ceiling screen of an automobile according to claim 1 or 2, characterized in that: A passive locking tongue (6) is also rotatably connected to the top plate (1). The two locking tongues are driven by a linkage shaft (7) to rotate synchronously to unlock or lock.

7. The tongue mechanism used on the ceiling screen of an automobile according to claim 6, characterized in that: Both ends of the linkage shaft (7) are rotatably arranged on the mounting seats (8) of the top plate. The first elastic member (10) is a torsion spring, which is sleeved on the linkage shaft (7), and one end is clamped into the notch (81) of the mounting seat (8), and the other end is inserted into the positioning groove (A) of the locking tongue.

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