Ceiling type mounting bracket

Abstract

The utility model discloses a suspended ceiling type mounting bracket, which comprises a base, a swing arm, a driving mechanism and a locking mechanism, the locking mechanism comprises a locking hook and a locking shaft, when in a shifting state, the locking shaft is in contact with a shifting part and shifts the locking hook to rotate so as to enable the locking hook to tilt up, and when in a transition state, the locking shaft is separated from the locking hook so as to enable the locking hook to turn up. And when the locking hook is in the locking state, the locking shaft is in contact with the locking part to form locking. According to the utility model, the locking shaft and the locking hook are respectively arranged on the base and the swing arm, when the swing arm swings to the folded state, the locking shaft is in contact with the locking part and is supported by the locking part, and the locking shaft can be just matched with the locking hook for limiting, so that the swing arm is locked in the folded state; and the risk that the swing arm accidentally falls off when the bracket is in an emergency is reduced, and the safety performance of the bracket is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of television brackets, in particular to a ceiling-mounted mounting bracket. Background Art

[0002] The ceiling mounting bracket is used to install display devices such as televisions on the top ceiling, and can flip the display devices to achieve the folding and unfolding of the display devices. In related technologies, such as CN217583966U, the driving mechanism for driving the display device to flip uses a conveyor belt to pull the mounting frame for installing the display device to flip. The mounting frame is provided with a movable pulley for winding the conveyor belt, and the roller rotates around a fixed axis. During the folding process of the mounting frame, as the roller continues to rotate, the conveyor belt is continuously wound around the outer periphery of the roller. During the rotation of the roller, the conveyor belt is applied with a reverse torque. As the mounting frame is gradually folded, the number of conveyor belt layers wrapped around the outer periphery of the roller gradually increases, and the winding radius of the conveyor belt also gradually increases. When the TV is in the folded state, the load borne by the driving motor is the largest. Since the driving motor relies on gear self-locking to lock the roller, there is a risk of breakage of the conveyor belt and the self-locking gear, which may cause casualties. Summary of the invention

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a ceiling-mounted mounting bracket, which can be locked in a folded state and has a high safety performance.

[0004] According to the ceiling mounting bracket in the embodiment of the utility model, it includes:

[0005] Pedestal;

[0006] A swing arm, used for mounting a display device, one end of the swing arm being rotatably connected to the bottom of the base;

[0007] A driving mechanism, mounted on the base and connected to the swing arm, the driving mechanism being capable of driving the swing arm to swing forward to be retracted relative to the base, or driving the swing arm to swing backward to be extended relative to the base;

[0008] The locking mechanism comprises a locking hook and a locking shaft, wherein the locking shaft is connected to the swing arm, the locking hook comprises a rotating part and a toggle part, the toggle part is connected below the rotating part, the top surface of the toggle part forms the locking part, and the rotating part is rotatably connected to the base;

[0009] In which, the locking mechanism has a toggle state, a transition state and a locking state. The locking mechanism is configured as follows: when in the toggle state, the swing arm is driven by the drive mechanism to swing forward, the locking shaft contacts the toggle part, and toggle the locking hook to rotate so that the locking hook is tilted, and the locking shaft transitions from the toggle part to the locking part; when in the transition state, the swing arm is driven by the drive mechanism to swing forward, the locking shaft is separated from the locking hook, and the locking hook retreats to a naturally drooping state; when in the locking state, the swing arm is driven by the drive mechanism to swing reversely, the locking shaft contacts the locking part, and a lock is formed.

[0010] The ceiling mounting bracket according to the embodiment of the utility model has at least the following beneficial effects:

[0011] In the utility model, the locking shaft and the locking hook are respectively arranged on the base and the swing arm. When the swing arm swings to the folded state, the locking shaft contacts the locking part and is supported by the locking part. The locking shaft can just cooperate with the locking hook to limit the position, so that the swing arm is locked in the folded state, reducing the risk of the swing arm accidentally falling when an emergency occurs in the bracket, thereby improving the safety performance of the bracket.

[0012] According to some embodiments of the present utility model, the locking hook also includes a connecting portion, which is connected between the toggle portion and the rotating portion, the toggle portion and the rotating portion protrude relative to the connecting portion, and the locking portion is located directly below the rotation axis of the rotating portion.

[0013] According to some embodiments of the utility model, the toggle portion and the rotating portion define a locking groove, the opening of the locking groove in the vertical direction is greater than the height of the locking shaft along the vertical direction, and the depth of the locking groove in the horizontal direction is greater than the length of the locking shaft along the horizontal direction.

[0014] According to some embodiments of the present utility model, the swing arm is configured so that when the locking mechanism switches from the toggle state to the transition state, the swing arm is in a horizontal state.

[0015] According to some embodiments of the present invention, the swing arm is configured so that when the locking mechanism is in a locked state, the swing arm is in a horizontal state.

[0016] According to some embodiments of the utility model, the driving mechanism includes a moving seat, a transmission belt and a first transmission wheel, the moving seat is slidingly connected to the base, one end of the swing arm is rotatably connected to the moving seat, one end of the transmission belt is fixed to the base, and the other end is fixed to the swing arm, the transmission belt is wound around the first transmission wheel, the first transmission wheel is rotatably connected to the moving seat, and can move synchronously with the moving seat.

[0017] According to some embodiments of the utility model, the driving mechanism further includes a second transmission wheel, the second transmission wheel is rotatably connected to the base, the transmission belt is wound around the second transmission wheel, and the rotating portion and the rotation axis of the second transmission wheel are colinear.

[0018] According to some embodiments of the present utility model, the rotating portion is rotatably connected to a side portion of the base, and the shifting portion and the locking portion are located below the base.

[0019] According to some embodiments of the utility model, the two ends of the base respectively form a first end and a second end, the locking hook is connected to the first end, and the locking mechanism further includes a limit pin, the limit pin is fixed to the base, and the limit pin is located on a side of the rotating part facing away from the second end;

[0020] Wherein, a protruding limiting portion is provided on the side of the rotating part facing the limiting pin, and the limiting portion is located below the limiting pin; or, a limiting plane is provided on the side of the rotating part facing the limiting pin, and the limiting pin is located below the rotation axis of the rotating part.

[0021] According to some embodiments of the utility model, the two ends of the base respectively form a first end and a second end, the locking hook is connected to the first end, and the side of the shifting portion facing away from the second end has a guide surface, and the guide surface is inclined from bottom to top toward the second end.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 It is a schematic diagram of the ceiling-mounted mounting bracket of the utility model in an unfolded state;

[0025] Figure 2 It is a schematic diagram of the ceiling-mounted mounting bracket of the utility model in a folded state;

[0026] Figure 3 is a schematic diagram of an embodiment of a locking hook;

[0027] Figure 4 It is a schematic diagram of the cooperation between the locking hook and the locking shaft when the locking mechanism is in different states;

[0028] Figure 5 is a schematic diagram of an embodiment of a driving mechanism;

[0029] Figure 6 FIG. 4 is a schematic diagram of another embodiment of a locking hook.

[0030] Reference numerals:

[0031] Base 100;

[0032] Swing arm 200;

[0033] Driving mechanism 300, driving element 310, moving seat 320, transmission belt 330, first transmission wheel 340, second transmission wheel 350, lead screw 360, nut seat 370;

[0034] The locking mechanism 400 , the locking hook 410 , the rotating portion 411 , the limiting portion 4111 , the limiting plane 4112 , the toggle portion 412 , the guide surface 4121 , the locking portion 413 , the connecting portion 414 , the locking groove 415 , the locking shaft 420 , the support 430 , and the limiting pin 440 . DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The embodiment of the utility model provides a ceiling-mounted mounting bracket (hereinafter referred to as the bracket) for hanging a display device such as a television on a mounting position with a top surface such as a ceiling, and can flip the display device to change the viewing angle of the display device and fold or unfold the display device. Figure 1 and Figure 2 The bracket includes a base 100, a swing arm 200, a driving mechanism 300 and a locking mechanism 400. The base 100 is installed and fixed to the ceiling, and the display device is installed and fixed to the swing arm 200. The swing arm 200 is located below the base 100, and one end of the swing arm 200 is rotatably connected to the base 100. The driving mechanism 300 is installed on the base 100 and connected to the swing arm 200. The driving mechanism 300 provides power for the swing arm 200 to swing relative to the base 100, so that the swing arm 200 swings relative to the base 100. The utility model defines that when the driving mechanism 300 drives the swing arm 200 to swing forward, the other end of the swing arm 200 gradually approaches the base 100 and is retracted relative to the base 100. When the driving mechanism 300 drives the swing arm 200 to swing reversely, the other end of the swing arm 200 gradually moves away from the base 100 and is unfolded relative to the base 100; wherein, Figure 1 is a schematic diagram of the swing arm 200 in an unfolded state, Figure 2 It is a schematic diagram of the swing arm 200 in a folded state.

[0041] The locking mechanism 400 is used to lock the position of the swing arm 200 when the swing arm 200 is in the folded position, thereby reducing the risk of the swing arm 200 accidentally falling. The locking mechanism 400 includes a locking hook 410 and a locking shaft 420. The locking shaft 420 is connected to the swing arm 200 and can move synchronously with the swing arm 200. Figure 3 The locking hook 410 has a rotating portion 411 and a toggle portion 412. The toggle portion 412 is connected to the bottom of the rotating portion 411. The top surface of the toggle portion 412 forms a locking portion 413. The rotating portion 411 is rotatably connected to the base 100. In the present application, the locking mechanism 400 has a toggle state, a transition state and a locking state. When the swing arm 200 is driven by the driving mechanism 300 to switch to the retracted state, the locking mechanism 400 sequentially experiences the toggle state, the transition state and the locking state, and finally locks the swing arm 200 in the retracted state.

[0042] Specifically, since the rotating portion 411 is located at the upper portion of the locking hook 410 and the rotating portion 411 is rotatably connected to the base 100, when the locking shaft 420 is not driven by an external force, the locking hook 410 is in a naturally drooping state under the action of its own gravity. Figure 4 As shown in Figure (a), when the swing arm 200 switches from the extended state to the retracted state, the driving mechanism 300 drives the swing arm 200 to swing forward, one end of the swing arm 200 is lifted and gradually approaches the base 100, and the locking shaft 420 moves synchronously with the swing arm 200 during this process. When the locking shaft 420 rises to contact with the toggle portion 412, the locking mechanism 400 enters the toggle state. In the toggle state, the swing arm 200 is continuously driven by the driving mechanism 300 to swing forward, and the locking shaft 420 is always in contact with the toggle portion 412. The toggle portion 412 is toggled by the locking shaft 420 to rotate clockwise, causing the locking hook 410 to tilt, and the contact position of the locking shaft 420 on the toggle portion 412 gradually rises and transitions upward to the locking portion 413. The state of the locking shaft 420 is shown in FIG. Figure 4 (b) in the figure; after the locking shaft 420 transitions to contact with the locking portion 413, the locking mechanism 400 enters a transition state, refer to Figure 4 In FIG. (c), the swing arm 200 continues to swing forward under the drive of the driving mechanism 300, the locking shaft 420 is lifted and separated from the locking portion 413, the locking hook 410 is no longer moved by the locking shaft 420, and returns to a naturally drooping state by gravity; when the locking hook 410 returns to the drooping state, the swing arm 200 is driven by the driving mechanism 300 to swing in the opposite direction, the locking shaft 420 drops, and retreats to contact with the locking portion 413. The state of the locking shaft 420 is shown in FIG. Figure 4 As shown in Figure (d) , the locking mechanism 400 is in a locked state, and the locking shaft 420 is supported and limited by the locking portion 413, locking the swing arm 200 in a retracted state.

[0043] In the present application, the locking shaft 420 and the locking hook 410 in the locking mechanism 400 are respectively arranged on the base 100 and the swing arm 200. When the swing arm 200 swings to the folded state, the locking shaft 420 can just cooperate with the locking hook 410 to limit the position, so that the swing arm 200 is locked in the folded state, forming a safety structure in the bracket, reducing the risk of the swing arm 200 accidentally falling when an emergency occurs in the bracket, and improving the safety performance of the bracket.

[0044] It should be noted that in the present application, the locking hook 410 is arranged to lock the locking shaft 420 in a naturally drooping state. In the absence of external force, the state of the locking hook 410 is stable and can provide stable support for the locking shaft 420. Based on this, the present application arranges a method in which the locking shaft 420 first moves the locking hook 410 to tilt up, then separates from the locking hook 410, makes the locking hook 410 droop naturally, and then returns to lock with the locking hook 410. Compared with directly moving the locking shaft 420 to a position in contact with the locking portion 413 as the locking state of the locking mechanism 400, the present application can reduce the risk of the locking hook 410 shaking and separating from the locking shaft 420 after being locked with the locking shaft 420. In addition, the locking hook 410 can be kept in a drooping state under the action of its own gravity, and there is no need to set up an additional power component to drive the locking hook 410 to move, thereby simplifying the structure of the locking mechanism 400. In addition, in the utility model, when the locking mechanism 400 is in a locked state, the driving mechanism 300 no longer needs to provide driving force to the swing arm 200. The swing arm 200 can be stably folded under the base 100 by relying on the locking between the locking shaft 420 and the locking portion 413, and there is no need to rely on the self-locking structure of the driving mechanism 300 itself for locking. At this time, the driving mechanism 300 no longer bears the load applied by the swing arm 200, which can reduce the risk of the swing arm 200 falling due to the failure of the self-locking structure of the driving mechanism 300 and increase the service life of the driving mechanism 300.

[0045] It should be noted that the tilting of the locking hook 410 is not limited to being achieved based on the rotation of the rotating portion 411 in a clockwise or counterclockwise direction. The base 100 is defined as having two opposite ends, a first end and a second end, the locking hook 410 is connected to the first end, and the swing arm 200 is rotatably connected to the second end, with the direction of the second end toward the first end as the rear, and the direction of the first end toward the second end as the front. When the locking shaft 420 contacts the toggle portion 412, the locking shaft 420 can abut against the front side or the rear side of the toggle portion 412; in the case where the locking shaft 420 abuts against the front side of the toggle portion 412, the toggle portion 412 is tilted backward by the toggle of the locking shaft 420, and after the locking shaft 420 is separated from the locking portion 413, the locking hook 410 returns forward to a naturally drooping state; in the case where the locking shaft 420 abuts against the rear side of the toggle portion 412, the toggle portion 412 is tilted forward by the toggle of the locking shaft 420, and after the locking shaft 420 is separated from the locking portion 413, the locking hook 410 returns backward to a naturally drooping state.

[0046] For example, the locking hook 410 may be configured to be L-shaped, for example, the upper end of the rotating portion 411 is rotatably connected to the base 100, the toggle portion 412 is connected to the lower end of the rotating portion 411, and the toggle portion 412 protrudes relative to the rotating portion 411, and the top surface of the toggle portion 412 forms the locking portion 413. Alternatively, the locking hook 410 may be configured to be approximately U-shaped, for example Figure 3The locking hook 410 also includes a connecting portion 414, which is connected between the toggle portion 412 and the rotating portion 411. The toggle portion 412 and the rotating portion 411 protrude from the same side of the connecting portion 414. The toggle portion 412 and the rotating portion 411 define a locking groove 415. The top surface of the toggle portion 412 or the bottom wall of the locking groove 415 forms a locking portion 413, and the locking portion 413 is located directly below the rotation axis of the rotating portion 411; therefore, when the locking hook 410 is in a naturally drooping state, the position of the locking portion 413 and the position of the rotating portion 411 rotatably connected to the base 100 are exactly distributed in the vertical direction. After the locking shaft 420 contacts the locking portion 413, the locking hook 410 is only subjected to a force in the vertical direction, which can prevent the locking hook 410 from shaking, so that the locking hook 410 can provide stable support and limitation to the locking shaft 420.

[0047] Understandable, refer to Figure 4 When the locking mechanism 400 switches from the toggle state to the transition state, the locking shaft 420 transitions from the toggle portion 412 to the locking portion 413 and enters the locking groove 415. After the locking mechanism 400 enters the transition state, the locking shaft 420 continues to move with the swing arm 200 and separates from the locking portion 413. The locking hook 410 retreats to a natural drooping state due to gravity. At this time, the locking shaft 420 is still located in the locking groove 415. When the locking shaft 420 is driven back to contact with the locking portion 413, the locking mechanism 400 switches from the transition state to the locking state. Therefore, after the locking shaft 420 enters the locking groove 415 until the locking mechanism 400 switches to the locked state, the locking shaft 420 is always located in the locking groove 415, and the locking shaft 420 avoids the natural return action of the locking hook 410. When the locking shaft 420 retreats to contact with the locking part 413, there is no need to set the position to cooperate with the locking groove 415 again and insert it into the locking groove 415 again. The locking shaft 420 can contact with the locking part 413 more smoothly.

[0048] Furthermore, the opening of the locking groove 415 in the vertical direction is greater than the height of the locking shaft 420 in the vertical direction, and the depth of the locking groove 415 in the horizontal direction is greater than the length of the locking shaft 420 in the horizontal direction, so that the locking shaft 420 can be inserted into the locking groove 415, and the locking groove 415 provides the locking shaft 420 with space for movement in the vertical and horizontal directions. After the locking mechanism 400 enters the transition state, the locking shaft 420 can always be located in the locking groove 415, and avoid the movement of the locking hook 410 from tilting to naturally sagging, thereby realizing stable cooperation between the locking shaft 420 and the locking hook 410, and there is sufficient contact area between the locking shaft 420 and the locking portion 413, so that the locking shaft 420 and the locking portion 413 are in stable contact.

[0049] In addition, the bottom surface of the locking shaft 420 is set as a plane, and the top surface of the toggle part 412 is also set as a plane. After the bottom surface of the locking shaft 420 contacts the locking part 413, the two facing surfaces are stably in contact, and the locking shaft 420 and the locking part 413 only have a mutual force in the vertical direction, so that the locking mechanism 400 has a relatively stable locking state. The toggle part 412 has a guide surface 4121 on the side facing away from the second end of the base 100, and the guide surface 4121 is inclined from bottom to top toward the second end. When the locking mechanism 400 is in the toggle state, the locking shaft 420 contacts the guide surface 4121. When the swing arm 200 continues to swing forward, the locking shaft 420 moves to different positions of the guide surface 4121, and the locking shaft 420 transitions to the locking groove 415 through the guide surface 4121, which can reduce the jumping of the locking shaft 420 when entering the locking groove 415, so that the cooperation between the locking shaft 420 and the locking hook 410 is more stable.

[0050] In one embodiment, when the locking mechanism 400 is in a locked state, the swing arm 200 is in a folded state and in a horizontal state, so that the swing arm 200 is as close to the base 100 as possible, reducing the space occupied by the entire bracket in the folded state, and there is only an interaction force in the vertical direction between the locking shaft 420 and the locking portion 413, which can prevent the locking hook 410 from shaking. The force applied to the swing arm 200 by the locking portion 413 and the base 100 is balanced with the gravity of the swing arm 200, so that the swing arm 200 is stably locked in the folded state.

[0051] Furthermore, when the locking mechanism 400 switches from the toggle state to the transition state, the locking shaft 420 switches from the toggle portion 412 to contact with the locking portion 413, and the swing arm 200 is in a horizontal state at this time; it is understandable that the locking groove 415 has an opening that is open to the rear, and the locking shaft 420 can transition to the inside of the locking groove 415 through the opening. When the swing arm 200 is driven by the driving mechanism 300 to swing in the positive direction to the horizontal state, the locking shaft 420 moves backward to the farthest point, and the locking shaft 420 moves into the locking groove 415. After the locking mechanism 400 enters the transition state, when the swing arm 200 continues to swing in the positive direction, the locking shaft 420 will move forward a certain distance, increasing the depth of the locking shaft 420 inserted into the locking groove 415, so that the locking shaft 420 is always located in the locking groove 415 in the transition state and the locking state.

[0052] In one embodiment, a rotating shaft is provided at the bottom of the base 100, one end of the swing arm 200 is rotatably connected to the rotating shaft, and the other end of the swing arm 200 is connected to the driving mechanism 300, and is driven by the driving mechanism 300 to be lifted or lowered, so that the swing arm 200 swings relative to the base 100 based on the rotating shaft. Specifically, when the driving mechanism 300 drives the swing arm 200 to swing forward to a horizontal state, the locking mechanism 400 switches from the toggle state to the transition state, and at this time the locking shaft 420 transitions from the toggle portion 412 to contact with the locking portion 413; when the driving mechanism 300 continues to drive the swing arm 200 to swing forward, the rear end of the swing arm 200 tilts up, the locking shaft 420 moves upward and separates from the locking portion 413, and the locking hook 410 naturally droops due to gravity, and the driving mechanism 300 drives the swing arm 200 to swing in the opposite direction, and the locking shaft 420 retreats to contact with the locking portion 413. At this time, the locking mechanism 400 switches to the locked state, and the swing arm 200 swings to the horizontal state again, and is locked in the retracted state by the locking mechanism 400. The driving mechanism 300 may include a motor, a roller and a connecting flexible belt. The output end of the motor is connected to the roller and drives the roller to rotate. One end of the connecting flexible belt is connected to the roller, and the other end is connected to the swing arm 200. When the roller rotates, the connecting flexible belt is continuously wound around the surface of the roller. The connecting flexible belt lifts or lowers the swing arm 200, so that the swing arm 200 swings relative to the base 100.

[0053] In another embodiment, referring to Figure 5 The driving mechanism 300 includes a driving element 310, a moving seat 320, a transmission belt 330 and a first transmission wheel 340. The moving seat 320 is slidably connected to the base 100. The driving element 310 is connected to the moving seat 320 and is used to drive the moving seat 320 to move relative to the base 100. One end of the swing arm 200 is rotatably connected to the moving seat 320. One end of the transmission belt 330 is fixed to the base 100, and the other end is fixed to the swing arm 200. The transmission belt 330 is wound around the first transmission wheel 340. The first transmission wheel 340 is rotatably connected to the moving seat 320 and can move synchronously with the moving seat 320. Specifically, when the driving element 310 drives the moving seat 320 to move, the first transmission wheel 340 moves synchronously with the moving seat 320. Since the two ends of the transmission belt 330 are fixed, the transmission belt 330 wound around the first transmission wheel 340 is pulled by the first transmission wheel 340 to drive the swing arm 200 to rotate relative to the moving seat 320, so that the swing arm 200 is lifted or lowered, and at the same time, the first transmission wheel 340 rotates relative to the moving seat 320. Since the first transmission wheel 340 moves with the moving seat 320 and can rotate relative to the moving seat 320, the lifting or lowering distance of the swing arm 200 is twice the moving distance of the moving seat 320, which shortens the moving distance and running time of the moving seat 320 during the swinging process of the swing arm 200, so that the swing arm 200 can be quickly folded or unfolded.

[0054] It can be understood that when the swing arm 200 swings forward, the moving seat 320 moves forward, and when the swing arm 200 swings backward, the moving seat 320 moves backward, that is, the swing arm 200 can rotate relative to the moving seat 320 and move forward and backward with the moving seat 320. Therefore, when the swing arm 200 is driven to swing in the forward direction to the horizontal state, the locking mechanism 400 switches from the toggle state to the transition state, and at this time the locking shaft 420 transitions from the toggle portion 412 to contact with the locking portion 413; when the swing arm 200 continues to swing in the forward direction, the swing arm 200 moves forward following the moving seat 320, and the rear end of the swing arm 200 tilts up, the locking shaft 420 can move forward and upward, and separate from the locking portion 413, and the locking hook 410 naturally droops due to gravity, and then the swing arm 200 swings in the opposite direction, and the locking shaft 420 retreats to contact with the locking portion 413, at this time the locking mechanism 400 switches to the locked state, and the swing arm 200 swings to the horizontal state again, and is locked in the retracted state by the locking mechanism 400. When the locking shaft 420 moves to avoid the natural drooping action of the locking hook 410, the locking shaft 420 can move forward with the swing arm 200, increasing the depth of the locking shaft 420 in the locking groove 415. The locking shaft 420 is always located in the locking groove 415 in the transition state and the locking state, so that the locking shaft 420 can stably cooperate with the locking part 413.

[0055] Furthermore, the driving mechanism 300 also includes a second transmission wheel 350, which is rotatably connected to the base 100, and the transmission belt 330 is wound around the outer peripheral surface of the second transmission wheel 350. When the movable base 320 is driven to move, the first transmission wheel 340 and the second transmission wheel 350 rotate synchronously, and the second transmission wheel 350 has a guiding effect on the winding path of the transmission belt 330. The second transmission wheel 350 guides the transmission belt 330 from the swing arm 200 to the first transmission wheel 340, thereby reducing the interference between the transmission belt 330 and other structures, and the driving mechanism 300 can transmit smoothly. In addition, the rotating part 411 and the rotating axis of the second transmission wheel 350 are colinear, that is, the locking hook 410 and the second transmission wheel 350 can rotate around the same rotating axis. On the one hand, the rotating part 411 and the second transmission wheel 350 can be rotatably connected to the base 100 through the same rotating shaft, thereby reducing the cost of the bracket. On the other hand, the second transmission wheel 350 and the locking hook 410 are both located at the rear end of the base 100, which is convenient for the first transmission wheel 340 to lift the swing arm 200 when moving, and the locking hook 410 and the movable base 320 can jointly support the swing arm 200, so that the swing arm 200 remains balanced in the folded state.

[0056] Specifically, the driving mechanism 300 also includes a screw rod 360 and a nut seat 370. One end of the screw rod 360 is connected to the driving element 310, and the other end is threadedly connected to the nut seat 370. The driving element 310 can output rotational power. The driving element 310 is arranged on the outside of the base 100. Part of the movable seat 320, the first transmission wheel 340, the second transmission wheel 350 and part of the transmission belt 330 are located inside the base 100. Part of the transmission belt 330 extends to the outside of the base 100 and is connected to the swing arm 200. Part of the movable seat 320 extends to the outside of the base 100 and is rotatably connected to the swing arm 200.

[0057] The rotating part 411 is rotatably connected to the side of the base 100 in the horizontal direction, and the toggle part 412 and the locking part 413 are located below the base 100, so that the connection between the locking hook 410 and the base 100 in the vertical direction is more compact, reducing the space occupied by the locking hook 410 in the vertical direction, providing a larger design space for the locking groove 415, and allowing the swing arm 200 to be as close to the base 100 as possible in the folded state, reducing the space occupied by the bracket in the folded state. It can be understood that the locking mechanism 400 includes two locking hooks 410 and two locking shafts 420. The two locking hooks 410 are connected to opposite sides of the base 100. The two locking shafts 420 are installed on the swing arm 200 and are located on both sides of the transmission belt 330. Each locking shaft 420 can be locked with a locking hook 410. The locking structure formed by the two sets of locking hooks 410 and the locking shafts 420 enables the swing arm 200 to maintain balance in the retracted state, and the locking shafts 420 protrude in the direction away from the transmission belt 330. The locking shafts 420 avoid the transmission belt 330 connected to the swing arm 200, so that the transmission belt 330 can be smoothly wound around the second transmission wheel 350 and the first transmission wheel 340 in the base 100.

[0058] In addition, the locking shaft 420 is connected to the swing arm 200 through the support 430. The locking shaft 420 and the support 430 are both located on the side of the swing arm 200 facing the base 100, so that there is a certain gap between the locking shaft 420 and the swing arm 200. During the locking process of the locking shaft 420 and the locking hook 410, the gap provides a movement gap for the lock to avoid interference between the locking hook 410 and the swing arm 200.

[0059] In the present invention, the locking mechanism 400 further includes a limit pin 440, which is used to limit the locking hook 410 when the swing arm 200 is unfolded from the locked state, to prevent the locking hook 410 from being dragged by the locking shaft 420 and moving synchronously, so that the locking hook 410 and the locking shaft 420 can be unlocked normally. Figure 6The limit pin 440 is fixed to the base 100 and is located on the side of the rotating part 411 facing away from the second end of the base 100. A protruding limit portion 4111 is provided on the side of the rotating part 411 facing the limit pin 440. The limit portion 4111 is located below the limit pin 440. When the locking mechanism 400 is in the toggle state, the swing arm 200 is driven to swing forward, and the limit portion 4111 rotates clockwise with the rotating part 411. The limit portion 4111 is away from the limit pin 440, and the limit portion 4111 is not limited by the limit pin 440. 200 can be folded normally; when the swing arm 200 switches from the folded state to the unfolded state, the swing arm 200 is driven to swing in the opposite direction, and the locking hook 410 tends to rotate counterclockwise due to the friction. At this time, the limiting portion 4111 abuts against the limiting pin 440 and is limited by the limiting pin 440, so that the locking hook 410 cannot move with the locking shaft 420. The locking shaft 420 moves relative to the locking hook 410 and separates from the locking hook 410. At this time, the locking mechanism 400 is unlocked, and the swing arm 200 can continue to swing in the opposite direction and unfold.

[0060] In another embodiment, referring to Figure 3 and Figure 4 The limit pin 440 is located on the side of the rotating portion 411 facing away from the second end, and a limit plane 4112 is provided on the side of the rotating portion 411 facing the limit pin 440. The limit pin 440 is located below the rotation axis of the rotating portion 411; Figure 4 In FIG. (b), when the locking mechanism 400 is in the toggle state, the swing arm 200 is driven to swing forward, the rotating portion 411 rotates clockwise, the limiting plane 4112 is away from the limiting pin 440, the rotation of the rotating portion 411 is not limited by the limiting pin 440, and the swing arm 200 can be normally retracted; Figure 4 In Figure (e), when the swing arm 200 switches from the folded state to the unfolded state, the swing arm 200 is driven to swing in the opposite direction, and the locking hook 410 tends to rotate counterclockwise due to friction. At this time, the limiting plane 4112 abuts against the limiting pin 440 and is limited by the limiting pin 440, so that the locking hook 410 cannot move with the locking shaft 420. The locking shaft 420 moves relative to the locking hook 410 and separates from the locking hook 410. At this time, the locking mechanism 400 is unlocked, and the swing arm 200 can continue to swing in the opposite direction and unfold.

[0061] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. Ceiling mounting bracket, characterized in that: include: Pedestal; A swing arm, used for mounting a display device, one end of the swing arm being rotatably connected to the bottom of the base; A driving mechanism, mounted on the base and connected to the swing arm, the driving mechanism being capable of driving the swing arm to swing forward to be retracted relative to the base, or driving the swing arm to swing backward to be extended relative to the base; The locking mechanism comprises a locking hook and a locking shaft, wherein the locking shaft is connected to the swing arm, the locking hook comprises a rotating part and a toggle part, the toggle part is connected below the rotating part, the top surface of the toggle part forms the locking part, and the rotating part is rotatably connected to the base; The locking mechanism has a toggle state, a transition state and a locking state. The locking mechanism is configured such that, when in the toggle state, the swing arm is driven by the driving mechanism to swing forward, the locking shaft contacts the toggle portion, and toggle the locking hook to rotate, so that the locking hook is tilted, and the locking shaft transitions from the toggle portion to the locking portion; when in the transition state, the swing arm is driven by the driving mechanism to swing forward, the locking shaft is separated from the locking hook, and the locking hook retreats to a naturally drooping state; When in the locked state, the swing arm is driven by the driving mechanism to swing in the opposite direction, and the locking shaft contacts the locking portion to form a lock.

2. The ceiling mounting bracket according to claim 1, characterized in that: The locking hook further comprises a connecting portion, wherein the connecting portion is connected between the toggle portion and the rotating portion, the toggle portion and the rotating portion protrude relative to the connecting portion, and the locking portion is located directly below the rotating axis of the rotating portion.

3. The ceiling mounting bracket according to claim 2, characterized in that: The toggle portion and the rotating portion define a locking groove, the opening of the locking groove in the vertical direction is greater than the height of the locking shaft in the vertical direction, and the depth of the locking groove in the horizontal direction is greater than the length of the locking shaft in the horizontal direction.

4. The ceiling mounting bracket according to claim 1, characterized in that: The swing arm is configured such that when the locking mechanism switches from the toggle state to the transition state, the swing arm is in a horizontal state.

5. The ceiling mounting bracket according to claim 1, characterized in that: The swing arm is configured such that when the locking mechanism is in a locked state, the swing arm is in a horizontal state.

6. The ceiling mounting bracket according to claim 1, characterized in that: The driving mechanism includes a moving seat, a transmission belt and a first transmission wheel. The moving seat is slidably connected to the base, one end of the swing arm is rotatably connected to the moving seat, one end of the transmission belt is fixed to the base, and the other end is fixed to the swing arm. The transmission belt is wound around the first transmission wheel, and the first transmission wheel is rotatably connected to the moving seat and can move synchronously with the moving seat.

7. The ceiling mounting bracket according to claim 6, characterized in that: The driving mechanism further comprises a second transmission wheel, the second transmission wheel is rotatably connected to the base, the transmission belt is wound around the second transmission wheel, and the rotation axis of the rotating portion and the second transmission wheel are colinear.

8. The ceiling mounting bracket according to claim 1, characterized in that: The rotating part is rotatably connected to the side of the base, and the shifting part and the locking part are located below the base.

9. The ceiling mounting bracket according to claim 1, characterized in that: The two ends of the base respectively form a first end and a second end, the locking hook is connected to the first end, and the locking mechanism further includes a limit pin, the limit pin is fixed to the base, and the limit pin is located on a side of the rotating part facing away from the second end; Wherein, a protruding limiting portion is provided on the side of the rotating part facing the limiting pin, and the limiting portion is located below the limiting pin; or, a limiting plane is provided on the side of the rotating part facing the limiting pin, and the limiting pin is located below the rotation axis of the rotating part.

10. The ceiling mounting bracket according to claim 1, characterized in that: The two ends of the base respectively form a first end and a second end, the locking hook is connected to the first end, and the side of the shifting portion facing away from the second end has a guide surface, and the guide surface is inclined from bottom to top toward the second end.

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