Double-spring-bolt mechanism used on automobile ceiling screen

Abstract

The utility model relates to a double lock tongue mechanism used on an automobile ceiling screen, which comprises a top plate and a pair of lock tongues, a ceiling screen mounting area is arranged on the bottom surface of the top plate, the pair of lock tongues are rotatably connected onto the top plate and distributed at two ends of the ceiling screen mounting area, and a power mechanism capable of driving the pair of lock tongues to synchronously rotate to realize unlocking or locking is arranged on the top plate. The power mechanism comprises a driving wheel, a driven wheel and a pull rope arranged on the driving wheels at the two ends in a sleeving mode, the driving wheel is driven by a power source to achieve forward and reverse rotation, the pull rope moves back and forth around the driving wheels at the two ends and is provided with a first rope section and a second rope section which are opposite in movement direction, the two rope sections are each provided with a pair of lock tongues in a penetrating mode, and the two lock tongues further correspond to plectrums respectively. The pulling rope is sleeved with the plectrums, the plectrums are limited in the pulling grooves of the corresponding lock tongues, and the two plectrums on the pulling rope can pull the pair of lock tongues to rotate relatively to achieve locking or rotate oppositely to achieve unlocking. A set of power mechanism is used for simultaneously driving a pair of lock tongues to rotate relatively to realize locking or rotate oppositely to realize unlocking.

Description

Technical Field

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

[0002] CN218085350U discloses a ceiling screen with a novel unlocking and locking structure for a suspended ceiling, including a mounting seat and a display screen assembly rotatably arranged on the mounting seat, a lock slot being arranged on the display screen assembly, an unlocking and locking structure cooperating with the lock slot of the display screen assembly being arranged on the mounting seat, the unlocking and locking structure comprising a lock tongue seat, a button and a first elastic member, the lock tongue seat being rotatably arranged on the mounting seat, a lock tongue cooperating with the lock slot being movably arranged on a side of the lock tongue seat close to the display screen assembly, the button guide The sliding arrangement is on the mounting seat and is located beside the lock tongue seat. The first elastic member can always give the button an elastic force to slide outward and reset. The lock tongue seat is provided with a stop block near the button, and the button is provided with a limit block near the lock tongue seat. If the button is not pressed inward, the limit block and the stop block will conflict with each other, thereby limiting the lock tongue seat from flipping in the direction away from the display screen assembly; if the button is pressed inward, the limit block will be separated from the conflict with the stop block, and the lock tongue seat will be flipped in the direction away from the display screen assembly by the action of the display screen assembly, and drive the lock tongue to leave the lock slot. The lock tongue drive in this structure is relatively complicated, and there is only one set of lock tongue and lock slot to lock together, and the structure is not stable enough. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a double lock tongue mechanism for use on a car ceiling screen, which uses a set of power mechanism to simultaneously drive a pair of lock tongues to rotate relative to each other to achieve locking or rotate oppositely to achieve unlocking.

[0004] The technical solution of the utility model is as follows: a double-lock tongue mechanism used on a car ceiling screen comprises a top plate and a pair of lock tongues, a ceiling screen installation area is provided on the bottom surface of the top plate, a pair of lock tongues are rotatably connected to the top plate and are distributed at two ends of the ceiling screen installation area, a power mechanism that can drive the pair of lock tongues to rotate synchronously to achieve unlocking or locking is provided on the top plate, the power mechanism comprises a driving wheel, a driven wheel and a pull rope sleeved on the driving wheels at both ends, the driving wheel is driven by a power source to achieve forward and reverse rotation, the pull rope makes a reciprocating motion around the driving wheels at both ends, and has a first rope segment and a second rope segment with opposite motion directions, the two rope segments are respectively penetrated by a pair of lock tongues, and the two lock tongues are also respectively corresponding to plectrums, the plectrums are sleeved on the pull ropes and are limited in the pull grooves of the corresponding lock tongues, and the pair of lock tongues can be pulled by the two plectrums on the pull ropes to make relative rotation to achieve locking or reverse rotation to achieve unlocking.

[0005] By adopting the above technical solution, the drawstring connects the lock tongues at both ends. When the power source drives the driving wheel to rotate forward, the drawstring is driven to make a reciprocating motion around the driving wheels at both ends. The first cord segment drives the first lock tongue, and the second cord segment drives the second lock tongue to rotate relatively synchronously, realizing locking the display screen and restricting the opening of the display screen. When the power source drives the driving wheel to rotate reversely, the first cord segment of the drawstring drives the first lock tongue, and the second cord segment drives the second lock tongue to rotate away from each other synchronously, realizing unlocking the display screen and enabling the display screen to be opened. Specifically, the drawstring drives the slider on it to move, and the slider is limited in the draw groove corresponding to the lock tongue. At this time, the pulling force of the drawstring on the slider acts on the lock tongue and can drive the lock tongue to rotate. When the power of the drawstring is large, it can slide relative to the slider.

[0006] This product uses a set of power mechanisms to simultaneously drive a pair of lock tongues to rotate relatively to achieve locking or rotate away from each other to achieve unlocking, with low cost and strong linkage.

[0007] Preferably, a crossing mechanism is further provided between the driving wheels at both ends. Through the crossing mechanism, the middle parts of the two cord segments can cross. The driving wheel and the driven wheel rotate in opposite directions. A pair of lock tongues are symmetrically arranged on the first cord segment and the second cord segment at the two ends of the crossing mechanism and on the same side. Since the middle parts of the two cord segments cross, the first cord segment parts and the second cord segment parts at the two ends of the crossing mechanism are symmetrically arranged, which is convenient for symmetrically arranging a pair of lock tongues on the two cord segments at both ends and has a good locking effect on the display screen.

[0008] Preferably, the crossing mechanism includes a crossing rail. The crossing rail has two inclined rail grooves. The two inclined rail grooves are vertically offset and cross in an "X" shape. The middle parts of the first cord segment and the second cord segment are respectively threaded through the corresponding inclined rail grooves. A first support wheel and a second support wheel are respectively provided at both ends close to the crossing rail. The support wheels are used to spread the two cord segments. The first lock tongue is threaded through the first cord segment between the driving wheel and the first support wheel, and the second lock tongue is threaded through the second cord segment between the driven wheel and the second support wheel.

[0009] Preferably, the effective outer diameters of the driving wheel, the driven wheel and the two support wheels are the same, and the drawstring is also tensioned by a tensioning wheel. This makes the two cord segment parts between the relatively arranged driving wheel and the first support wheel parallel; and the two cord segment parts between the relatively arranged driven wheel and the second support wheel parallel, which is convenient for installing a pair of lock tongues.

[0010] Preferably, the power mechanism is located on the top surface of the top plate. The top plate has movable holes at both ends of the ceiling screen installation area. The locking tongues are rotatably arranged in the corresponding movable holes. The upper parts of the locking tongues penetrate through the movable holes and are hinged to the top plate. The paddles are installed in the middle parts of the locking tongues. The lower parts of the locking tongues have hooks for hooking the bottom surface of the ceiling screen. The hooks on a pair of locking tongues are arranged facing each other. Installing the power mechanism on the top surface of the top plate facilitates the installation of the display screen as the bottom surface is vacated; and installing the paddle in the middle part of the locking tongue facilitates driving the locking tongue to rotate.

[0011] Preferably, the top surface of the pulling groove is open and can accommodate the paddle. The opposite inner walls of the pulling groove have limiting surfaces. The two limiting surfaces respectively abut against the two ends of the paddle to limit the movement of the paddle along with the pulling rope. The two ends of the pulling groove also have through rope holes for the pulling rope to pass through, and the rope holes extend to the top surface opening of the pulling groove. This facilitates loading the pulling rope with the paddle installed together downward into the pulling groove.

[0012] Preferably, the paddle is annular, and there is a certain frictional force between the inner circle of the paddle and the pulling rope. The two limiting surfaces abut against the axial two ends of the paddle.

[0013] Preferably, the locking tongue is connected to the top plate through a rotating shaft. The locking tongue has hinge joints for the rotating shaft to pass through, and there are two hinge joints located on both sides of the rope hole in the upper part of the locking tongue. This facilitates the pulling rope to pass through the rope hole without being blocked by the hinge joint.

[0014] Preferably, the locking tongue is also abutted by a torsion spring. The torsion spring is sleeved on the rotating shaft and is located between the two hinge joints. By abutting the locking tongue with the torsion spring, the locking tongue can be prevented from shaking.

[0015] Preferably, the power source is a bidirectional motor, which drives the driving wheel to rotate through a worm and gear structure. The worm is installed on the output shaft of the motor, and the gear is coaxially linked with the driving wheel. Description of the Drawings

[0016] Figure 1 One of the structural diagrams of the specific embodiment of the present invention;

[0017] Figure 2 Two of the structural diagrams of the specific embodiment of the present invention;

[0018] Figure 3 The structural diagram of the power mechanism in the specific embodiment of the present invention;

[0019] Figure 4 The structural diagram of the cross rail in the specific embodiment of the present invention;

[0020] Figure 5 One of the structural diagrams of the locking tongue in the specific embodiment of the present invention;

[0021] Figure 6 This is the second structure diagram of the lock tongue in the specific embodiment of the present utility model.

[0022] In the figure: top plate 1, lock tongue 2, ceiling screen installation area 11, driving wheel 31, driven wheel 32, pull rope 33, power source 34, pusher 4, pulling groove 21, first rope segment 33a, second rope segment 33b, crossing mechanism A, crossing rail A1, inclined rail groove A11, first supporting wheel A2, second supporting wheel A3, tensioning wheel 5, moving hole 12, hook head 22, limiting surface 211, rope hole 212, rotating shaft 6, hinge joint 23, torsion spring 7, worm 81, turbine 82. Specific implementation mode

[0023] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0024] As Figure 1-6 shown, a double-lock tongue mechanism for an automotive ceiling screen of the present utility model includes a top plate 1 and a pair of lock tongues 2. The bottom surface of the top plate 1 has a ceiling screen installation area 11. The pair of lock tongues 2 are rotatably connected to the top plate 1 and are distributed at the left and right ends of the ceiling screen installation area 11. A power mechanism capable of driving the pair of lock tongues 2 to rotate synchronously to unlock or lock is provided on the top plate 1. The power mechanism includes a driving wheel 31, a driven wheel 32, and a pull rope 33 sleeved on the driving wheels at both ends. The driving wheel 31 is driven by the power source 34 to rotate forward and backward. The power source 34 is a bidirectional motor, which drives the driving wheel to rotate through a worm and gear structure. The worm 81 is installed on the output shaft of the motor, and the turbine 82 is coaxially linked with the driving wheel 31. The turbine and the worm are meshed. Of course, the output shaft of the bidirectional motor can also be directly coaxially linked with the driving wheel 31;

[0025] Specifically, the pull rope 33 reciprocates around the moving wheels at both ends, and has a first rope segment 33a and a second rope segment 33b with opposite movement directions. The two rope segments are respectively penetrated by a pair of locking tongues 2. The two locking tongues 2 are also respectively corresponding to plectrums 4. The plectrums 4 are sleeved on the pull rope 33 and are limited in the pull groove 21 of the corresponding locking tongue 2. The top surface of the pull groove 21 is open and can accommodate the plectrum 4. The two opposite inner walls of the pull groove 21 are provided with limiting surfaces 211. The two limiting surfaces 211 respectively form a conflict with the two ends of the plectrum 4 to limit the plectrum 4 from moving with the pull rope 33. The two ends of the pull groove 21 are also provided with opposite rope holes 212 for the pull rope 33 to be penetrated. The rope hole 212 extends to the top surface opening of the pull groove 21. The plectrum 4 is annular, and there is a certain friction between the inner circle of the plectrum 4 and the pull rope 33. The limiting surface 211 forms a conflict with the axial ends of the plectrum 4; the power mechanism is located on the top surface of the top plate 1, and the top plate 1 has movable holes 12 on the left and right ends of the ceiling screen installation area 11, and the lock tongue 2 is rotatably arranged in the corresponding movable hole 12, and the upper part of the lock tongue 2 passes through the movable hole 12 and is hinged on the top plate 1, and the plectrum 4 is installed on the middle part of the lock tongue 2, and the lower part of the lock tongue 2 has a hook head 22 for hooking the bottom surface of the ceiling screen, and the hook heads 22 on a pair of lock tongues 2 are arranged in opposite directions; the lock tongue 2 is connected to the top plate 1 via a rotating shaft 6, and the lock tongue 2 has a hinge head 23 for the rotating shaft 6 to pass through, and the hinge head 23 has two and is located on both sides of the rope hole 33 in the upper part of the lock tongue 2, and the lock tongue 2 is also set by a torsion spring 7, and the torsion spring 7 is sleeved on the rotating shaft 6 and is located between the two hinge heads 23;

[0026] The two pullers 4 on the pull rope 33 can pull a pair of lock tongues 2 to rotate relative to each other to achieve locking or rotate opposite to each other to achieve unlocking;

[0027] In a specific embodiment, a crossing mechanism A is further provided between the driving wheels at both ends, through which the middle of the two rope segments can be crossed. Here, the "middle" may not refer to the exact middle of the rope segment. The driving wheel 31 and the driven wheel 32 turn in opposite directions. A pair of locking tongues 2 are symmetrically arranged on the first rope segment 33a and the second rope segment 33b at both ends of the crossing mechanism A and on the same side. After the middle of the two rope segments cross, the first rope segment 33a and the second rope segment 33b at both ends of the crossing mechanism A are located on the same side and are bilaterally symmetrical. The crossing mechanism A includes a crossing track A1, the cross rail A1 has two inclined rail grooves A11, the two inclined rail grooves A11 are staggered up and down and cross in "X", the corresponding inclined rail grooves A11 are respectively passed through the middle of the first rope segment 33a and the second rope segment 33b, and the first support wheel A2 and the second support wheel A3 are respectively provided at the two ends close to the cross rail A1, and the support wheels are used to open the two rope segments, the first locking tongue is passed through the first rope segment 33a between the driving wheel 31 and the first support wheel A2, and the second locking tongue is passed through the second rope segment 33b between the driven wheel 32 and the second support wheel A2. Specifically, the effective outer wheel diameters of the driving wheel 31, the driven wheel 32 and the two support wheels are consistent, and the "effective outer wheel diameter" here refers to the outer diameter of the contact surface between the wheel and the pull rope, and the pull rope 33 is also tensioned by the tensioning wheel 5. The pull rope is in an "∞" shape.

[0028] Of course, the cross mechanism A can also be provided with a cross wheel, on which two wheel grooves offset vertically are provided, and the two rope segments are respectively passed through corresponding wheel grooves to realize oblique guidance.

[0029] Of course, the cross mechanism A may not be set. In this case, the two rope segments are located on both sides of the moving wheel and are arranged in parallel. The first locking tongue is arranged on the first rope segment on one side, and the second locking tongue is arranged on the second rope segment on the other side. The pair of locking tongues are arranged asymmetrically.

[0030] The working principle of this utility model:

[0031] When the power source 34 drives the driving wheel 31 to rotate, the pull rope 33 is driven to make a reciprocating motion around the driving wheels at the left and right ends, and the pull rope 33 drives the plectrum 4 thereon to move, and the plectrum 4 is limited in the pull groove 21 corresponding to the lock tongue 2. At this time, the pulling force of the pull rope 33 on the plectrum 4 acts on the lock tongue 2 and can drive the lock tongue 2 to rotate. When the power of the pull rope 33 is large, it can slide relative to the plectrum 4.

[0032] When the driving wheel 31 rotates forward, the right end of the pusher 4 on the first rope segment 33a abuts against a limiting surface 211 of the pulling groove 21, which can drive the locking tongue 2 to rotate rightward around its rotating shaft 6; at the same time, the left end of the pusher 4 on the second rope segment 33b abuts against a limiting surface 211 of the pulling groove 21, which can drive the locking tongue 2 to rotate leftward around its rotating shaft 6, so that a pair of locking tongues 2 rotate relatively synchronously, and the hooks 22 of the pair of locking tongues 2 abut against the bottom surface of the display screen, thereby restricting the opening of the display screen;

[0033] When the driving wheel 31 rotates reversely, the left end of the pusher 4 on the first rope segment 33a abuts against another limiting surface 211 of the pulling groove 21, which can drive the locking tongue 2 to rotate leftward around its rotating shaft 6; at the same time, the right end of the pusher 4 on the second rope segment 33b abuts against another limiting surface 211 of the pulling groove 21, which can drive the locking tongue 2 to rotate rightward around its rotating shaft 6, so that a pair of locking tongues 2 rotate away from each other synchronously, and the hooks 22 of the pair of locking tongues 2 move away from the display screen, thereby unlocking the display screen and enabling the display screen to be opened.

[0034] This product uses a set of power mechanisms to simultaneously drive a pair of locking tongues to rotate relatively to achieve locking or rotate away from each other to achieve unlocking, with low cost and strong linkage.

[0035] 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 position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features.

[0037] In the description of the present utility model, unless otherwise clearly specified and limited, 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 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 double-locking tongue mechanism used on a car ceiling screen, characterized in that: It includes a top plate (1) and a pair of locking tongues (2). On the bottom surface of the top plate (1), there is a ceiling screen installation area (11). The pair of locking tongues (2) are rotatably connected to the top plate (1) and are distributed at both ends of the ceiling screen installation area (11). A power mechanism is provided on the top plate (1) that can drive the pair of locking tongues (2) to rotate synchronously to achieve unlocking or locking. The power mechanism includes a driving wheel (31), a driven wheel (32), and a pulling rope (33) sleeved on the two driving wheels at both ends. The driving wheel (31) is driven by a power source (34) to rotate forward and backward. The pulling rope (33) makes a reciprocating motion around the two driving wheels at both ends, and it has a first rope segment (33a) and a second rope segment (33b) with opposite movement directions. The two rope segments respectively pass through the pair of locking tongues (2). The two locking tongues (2) are respectively corresponding to a pusher (4). The pusher (4) is sleeved on the pulling rope (33) and is limited in the pulling groove (21) of the corresponding locking tongue (2). The two pushers (4) on the pulling rope (33) can pull the pair of locking tongues (2) to rotate relatively to achieve locking or rotate away from each other to achieve unlocking.

2. The double-lock tongue mechanism used in the ceiling screen of an automobile according to claim 1, characterized in that: A crossing mechanism (A) is also provided between the driving wheels at both ends. Through the crossing mechanism (A), the middle parts of the two rope segments can be crossed. The rotation directions of the driving wheel (31) and the driven wheel (32) are opposite. The pair of locking tongues (2) are symmetrically arranged on the first rope segment (33a) and the second rope segment (33b) at the same side and at both ends of the crossing mechanism (A).

3. The double-lock tongue mechanism used in the overhead monitor of an automobile according to claim 2, characterized in that: The crossing mechanism (A) includes a crossing rail (A1). The crossing rail (A1) has two inclined rail grooves (A11). The two inclined rail grooves (A11) are vertically offset and cross in an "X" shape. The middle parts of the first rope segment (33a) and the second rope segment (33b) respectively pass through the corresponding inclined rail grooves (A11). At both ends close to the crossing rail (A1), a first support wheel (A2) and a second support wheel (A3) are respectively provided. The support wheels are used to spread the two rope segments. The first locking tongue passes through the first rope segment (33a) between the driving wheel (31) and the first support wheel (A2), and the second locking tongue passes through the second rope segment (33b) between the driven wheel (32) and the second support wheel (A2).

4. The double-locking tongue mechanism used on the ceiling screen of an automobile according to claim 3, characterized in that: The effective outer diameters of the driving wheel (31), the driven wheel (32), and the two support wheels are the same. The pulling rope (33) is also tensioned by a tensioning wheel (5).

5. A double-locking tongue mechanism used in an in-vehicle ceiling screen according to claim 1 or 2 or 3 or 4, characterized in that: The power mechanism is located on the top surface of the top plate (1). The top plate (1) has movable holes (12) at both ends of the ceiling screen installation area (11). The locking tongues (2) are rotatably arranged in the corresponding movable holes (12). The upper parts of the locking tongues (2) pass through the movable holes (12) and are hinged to the top plate (1). The pushers (4) are installed in the middle parts of the locking tongues (2). The lower parts of the locking tongues (2) have a hook head (22) for hooking the bottom surface of the ceiling screen. The hook heads (22) on the pair of locking tongues (2) face each other.

6. The double-locking tongue mechanism used in the ceiling screen of an automobile according to claim 5, characterized in that: The top surface of the grooved slot (21) is open and can accommodate the pusher (4). The opposite inner walls of the grooved slot (21) have limiting surfaces (211). The two limiting surfaces (211) respectively abut against the two ends of the pusher (4) to limit the movement of the pusher (4) along with the pulling rope (33). The two ends of the grooved slot (21) also have through rope holes (212) through which the pulling rope (33) can pass through, and the rope holes (212) extend to the top surface opening of the grooved slot (21).

7. The double-locking tongue mechanism used in the ceiling screen of an automobile according to claim 6, characterized in that: The pusher (4) is annular. There is a certain frictional force between the inner circle of the pusher (4) and the pulling rope (33). The two limiting surfaces (211) abut against the axial two ends of the pusher (4).

8. The double-lock tongue mechanism used in the ceiling screen of an automobile according to claim 6, wherein: The locking tongue (2) is connected to the top plate (1) through a rotating shaft (6). The locking tongue (2) has hinge joints (23) through which the rotating shaft (6) passes. There are two hinge joints (23) and they are located on both sides of the rope hole (33) at the upper part of the locking tongue (2).

9. The double-locking tongue mechanism used in an automotive overhead screen according to claim 7, wherein: The locking tongue (2) is also abutted by a torsion spring (7). The torsion spring (7) is sleeved on the rotating shaft (6) and is located between the two hinge joints (23).

10. A double-lock tongue mechanism used on an automotive overhead screen according to claim 1 or 2 or 3 or 4, characterized in that: The power source (34) is a two-way motor which drives the driving wheel to rotate through a worm and worm gear structure. The worm (81) is installed on the output shaft of the motor, and the worm wheel (82) and the driving wheel (31) are coaxially linked.

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