Locking device and display equipment

Abstract

The utility model discloses a locking device and display equipment, and belongs to the technical field of display equipment, a first wrenching part is movably connected with a mounting seat, a ratchet wheel is arranged on the mounting seat, a switching part is rotatably connected to the first wrenching part or the mounting seat, and the switching part is provided with a pawl used for being connected to the ratchet wheel in a matched mode. The first wrenching part is provided with an ejector block adjacent to the switching part, and when force is applied to the first wrenching part so that the first wrenching part can drive the mounting base to rotate relative to the ratchet wheel in the anticlockwise direction, the pawl crosses ratchets on the ratchet wheel; when force is applied to the first wrenching component so that the first wrenching component can drive the installation base to rotate relative to the ratchet wheel in the clockwise direction, the ejector block pushes the switching component so that the pawl can move away from the ratchet wheel, and installation and maintenance personnel do not need to additionally operate any structure to unlock the pawl and the ratchet wheel. Unlocking of the ratchet wheel and the pawl and rotation between the mounting base and the ratchet wheel can be achieved at the same time only by applying force to the first wrenching component and driving the mounting base to rotate in the clockwise direction.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to a locking device and a display device. Background Art

[0002] At present, when renting an LED display screen, a hanging lock column is usually used to connect the box body of the LED display screen to an installation surface (such as the top surface or side surface of a building). When removing the box body of the LED display screen, the installation and maintenance personnel need to unlock the hanging lock column. When installing the box body of the LED display screen, the installation and maintenance personnel need to lock the hanging lock column.

[0003] However, the existing hanging lock column is unlocked by a button. The installation and maintenance personnel need to find the unlocking button on the hanging lock column to unlock it. However, due to the narrow space where the hanging lock column is located in some scenarios, it is not convenient to press the unlocking button, or it is not convenient to press the unlocking button with force, resulting in time-consuming and laborious unlocking work for the hanging lock column. In addition, some installation and maintenance personnel are not familiar with the hanging lock column and may mistakenly think that a large force is needed to rotate the hanging lock column in the reverse direction to unlock it. The hanging lock column is forcibly rotated in the reverse direction, and even hammered vigorously with a hammer, resulting in damage to the hanging lock column. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a locking device and a display device to solve the problem of difficult unlocking of the current display hanging lock column.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A locking device includes a mounting base, a switching member, and a first lever member;

[0007] A ratchet is rotatably connected to the mounting base;

[0008] The switching member is rotatably connected to the first lever member or the mounting base, and the switching member is provided with a pawl for mating connection with the ratchet;

[0009] The first lever member is movably connected to the mounting base, and the first lever member is provided with a top block disposed adjacent to the switching member;

[0010] When a force is applied to the first lever member to drive the mounting base to rotate counterclockwise, the pawl crosses over the ratchet teeth; when a force is applied to the first lever member to drive the mounting base to rotate clockwise, the top block pushes the switching member to move the pawl away from the ratchet.

[0011] Preferably, a first elastic member is further included. Two ends of the first elastic member are respectively connected to the mounting base and the switching member, and the elastic force of the first elastic member causes the pawl to have a tendency to move toward the ratchet wheel.

[0012] Preferably, the switching member is provided with a transmission block adjacent to the top block. The transmission block and the pawl are respectively located at two ends of the switching member, and the top block can push the transmission block to make the pawl move away from the ratchet wheel.

[0013] Preferably, the mounting base has a first end face, the first actuating member has a second end face, and a gap is provided between the first end face and the second end face.

[0014] Preferably, the switching member includes a first connecting arm and a second connecting arm connected to each other. The first connecting arm is rotatably connected to the first actuating member, and the end of the second connecting arm is provided with the pawl. The first connecting arm and the second connecting arm are inclined;

[0015] The top block can push the first connecting arm to make the pawl move away from the ratchet wheel.

[0016] Preferably, the ratchet wheel is provided with internal ratchet teeth.

[0017] Preferably, a second actuating member rotatably connected to the first actuating member is further included.

[0018] Preferably, a second elastic member is further included. Two ends of the second elastic member are respectively connected to the first actuating member and the second actuating member.

[0019] Preferably, the first actuating member and the second actuating member are rotatably connected through a damping rotating shaft, and the damping rotating shaft provides damping for the two when they rotate relatively.

[0020] To achieve the same technical effect, the present invention further provides a display device including the locking device as described above.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The first pull component is movably connected to the mounting seat, and a ratchet is arranged on the mounting seat. The switching component is rotatably connected to the first pull component or the mounting seat, and the switching component is provided with a pawl for cooperating with the ratchet. The first pull component is provided with a top block arranged adjacent to the switching component. When force is applied to the first pull component to drive the mounting seat to rotate counterclockwise relative to the ratchet, the pawl passes over the ratchet teeth on the ratchet; when force is applied to the first pull component to drive the mounting seat to rotate clockwise relative to the ratchet, the top block pushes the switching component to make the pawl move away from the ratchet. The installation and maintenance personnel do not need to operate any additional structure to unlock the pawl and the ratchet. They only need to apply force to the first pull component and drive the mounting seat to rotate in the clockwise direction to simultaneously realize the unlocking of the ratchet pawl and the rotation between the mounting seat and the ratchet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the locking device of the utility model;

[0024] Figure 2 It is a schematic diagram of a state where the ratchet wheel of the locking device of the utility model is locked;

[0025] Figure 3 It is a schematic diagram of a state where the ratchet wheel of the locking device of the utility model is unlocked;

[0026] Figure 4 It is a cross-sectional schematic diagram of a state where the ratchet wheel of the locking device of the utility model is locked;

[0027] Figure 5 It is a cross-sectional schematic diagram of a state where the ratchet wheel of the locking device of the utility model is unlocked;

[0028] In the figure: 10, mounting seat; 11, ratchet; 111, ratchet; 12, first end face; 20, switching component; 21, pawl; 22, transmission block; 23, first connecting arm; 24, second connecting arm; 30, first pulling component; 31, top block; 32, second end face; 40, second pulling component; 50, first elastic member; 60, gap; 70, second elastic member; 80, damping shaft. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for illustrative purposes.

[0031] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the description of this utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0032] Embodiment 1

[0033] Combined with Figures 1 to 5 As shown, the locking device of the present utility model is schematically shown, including a mounting base 10, a switching component 20 and a first actuating component 30.

[0034] A ratchet wheel 11 is rotatably connected to the mounting base 10, and the ratchet wheel 11 is provided with internal ratchet teeth 111. The switching component 20 is rotatably connected to the first actuating component 30 or the mounting base 10, and the switching component 20 is provided with a pawl 21 for mating connection with the ratchet wheel 11, that is, the pawl 21 can be clamped between two adjacent internal ratchet teeth 111 in a specific rotation direction of the ratchet wheel 11. In this embodiment, the switching component 20 is rotatably connected to the first actuating component 30, while in other alternative embodiments, the switching component 20 can be rotatably connected to the mounting base 10, which can also achieve the functions required by the present utility model.

[0035] The first actuating component 30 is movably connected to the mounting base 10, and the first actuating component 30 is provided with a top block 31 adjacent to the switching component 20.

[0036] Combined with Figure 4 And Figure 5As shown, when a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate counterclockwise, the first actuating member 30 swings counterclockwise relative to the mounting base 10, and the pawl 21 passes over the ratchet teeth 111 on the ratchet wheel 11. The pawl 21 can prevent the mounting base 10 from rotating clockwise relative to the ratchet wheel 11. Conversely, when a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate clockwise, the first actuating member 30 swings clockwise relative to the mounting base 10, and the top block 31 pushes the switching member 20 to move the pawl 21 away from the ratchet wheel 11, which unlocks the ratchet wheel 11, enabling the installation and maintenance personnel to rotate the mounting base 10 clockwise relative to the ratchet wheel 11. During the above operation process, the installation and maintenance personnel only need to hold the first actuating member 30 and apply force in the counterclockwise or clockwise direction as required to lock or unlock the ratchet wheel 11. After the installation and maintenance personnel release the first actuating member 30 to stop applying force to the first actuating member 30, the ratchet teeth 111 will engage with the ratchet wheel 11, and the pawl 21 can allow the mounting base 10 to rotate counterclockwise relative to the ratchet wheel 11, and the pawl 21 can prevent the mounting base 10 from rotating clockwise relative to the ratchet wheel 11.

[0037] Among them, the mounting base 10 has a first end face 12, and the first actuating member 30 has a second end face 32. A gap 60 is provided between the first end face 12 and the second end face 32. When the first actuating member 30 moves relative to the mounting base 10 in the counterclockwise or clockwise direction, the side of the first end face 12 will abut against the side of the second end face 32 to limit the displacement and rotation angle between the first actuating member 30 and the mounting base 10, so as to prevent the displacement or swing between the first actuating member 30 and the mounting base 10 from exceeding the preset stroke.

[0038] Specifically, as Figure 2 and Figure 3, the locking device further includes a first elastic member 50. The first elastic member 50 is preferably a tension spring. The two ends of the first elastic member 50 are respectively connected to the mounting base 10 and the switching member 20. The elastic force of the first elastic member 50 causes the pawl 21 to tend to move towards the ratchet wheel 11. When a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate counterclockwise, the pawl 21 crosses over the ratchet teeth 111 on the ratchet wheel 11, and the pawl 21 slides relative to the outer wall of the ratchet teeth 111 and the pawl 21 will fall between the next pair of adjacent ratchet teeth 111 under the action of the elastic force of the first elastic member 50. When a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate clockwise, the first actuating member 30 swings clockwise relative to the mounting base 10, and the top block 31 pushes the switching member 20 to move the pawl 21 away from the ratchet wheel 11. At this time, the first elastic member 50 is stretched. After the force applied to the first actuating member 30 is stopped, the first elastic member 50 rebounds and pulls the switching member 20, and the switching member 20 pushes the top block 31 and makes the first actuating member 30 move counterclockwise relative to the mounting base 10 to reset.

[0039] The switching member 20 is provided with a transmission block 22 adjacent to the top block 31. The transmission block 22 and the pawl 21 are respectively located at two ends of the switching member 20, and the connection between the switching member 20 and the first actuating member 30 is located between the transmission block 22 and the pawl 21. The top block 31 can push the transmission block 22 to move the pawl 21 away from the ratchet wheel 11.

[0040] Further, the switching member 20 includes a first connecting arm 23 and a second connecting arm 24 connected to each other. The first connecting arm 23 is rotatably connected to the first actuating member 30. The end of the second connecting arm 24 is provided with a pawl 21. The first connecting arm 23 and the second connecting arm 24 are inclined. The top block 31 can push the first connecting arm 23 to move the pawl 21 away from the ratchet wheel 11. The switching member 20 with this structure can be arranged on the smaller-sized mounting base 10 and the first actuating member 30, which is beneficial to the miniaturization and light weight of the locking device.

[0041] Embodiment 2

[0042] As Figure 2 and Figure 3, the difference between this embodiment and Embodiment 1 is that the locking device further includes a second actuating member 40 rotatably connected to the first actuating member 30. The rotation axis between the first actuating member 30 and the second actuating member 40 is parallel to the rotation plane between the mounting base 10 and the ratchet wheel 11. Therefore, the second actuating member 40 has a folded state and an unfolded state. When the second actuating member 40 is in the folded state, the extending direction of the second actuating member 40 is perpendicular to the rotation plane between the mounting base 10 and the ratchet wheel 11. When the second actuating member 40 is in the unfolded state, the extending direction of the second actuating member 40 is parallel to the rotation plane between the mounting base 10 and the ratchet wheel 11. The second actuating member 40 in the folded state does not protrude from the cabinet of the display screen, while the second actuating member 40 in the unfolded state is convenient for maintenance personnel to hold. By applying force to the second actuating member 40, the maintenance personnel can transmit the power to the mounting base 10 through the first actuating member 30.

[0043] The locking device further includes a second elastic member 70. The second elastic member 70 is preferably a torsion spring. The two ends of the second elastic member 70 are respectively connected to the first actuating member 30 and the second actuating member 40. The elastic force of the second elastic member 70 makes the second actuating member 40 always have a tendency to switch to the folded state. In order to prevent the second actuating member 40 from rotating rapidly relative to the first actuating member 30 under the drive of the second elastic member 70 and causing structural collision, the first actuating member 30 and the second actuating member 40 are rotatably connected through a damping rotating shaft 80. The damping rotating shaft 80 provides damping for the two when the first actuating member 30 and the second actuating member 40 rotate relative to each other. The second elastic member 70 provides the power for the second actuating member 40 to rotate relative to the first actuating member 30, and the damping rotating shaft 80 provides damping to limit the relative rotation speed of the first actuating member 30 and the second actuating member 40. This can also greatly reduce the sound of collision between the second actuating member 40 and other structures and improve the user experience.

[0044] Embodiment 3

[0045] This embodiment provides a display device, including a display screen cabinet and the locking device as described above. The ratchet wheel 11 or the mounting portion of the locking device is connected to the cabinet.

[0046] In summary, the first actuating member 30 is movably connected to the mounting base 10. A ratchet wheel 11 is provided on the mounting base 10. The switching member 20 is rotatably connected to the first actuating member 30 or the mounting base 10. The switching member 20 is provided with a pawl 21 for mating connection with the ratchet wheel 11. The first actuating member 30 is provided with a top block 31 adjacent to the switching member 20. When a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate counterclockwise relative to the ratchet wheel 11, the pawl 21 passes over the ratchet teeth 111 on the ratchet wheel 11; when a force is applied to the first actuating member 30 to drive the mounting base 10 to rotate clockwise relative to the ratchet wheel 11, the top block 31 pushes the switching member 20 to move the pawl 21 away from the ratchet wheel 11. The installation and maintenance personnel do not need to operate any additional structure to unlock the pawl 21 and the ratchet wheel 11. Just applying a force to the first actuating member 30 and driving the mounting base 10 to rotate clockwise can simultaneously unlock the ratchet wheel 11 and the pawl 21 and realize the rotation between the mounting base 10 and the ratchet wheel 11.

[0047] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A locking device, characterized in that, It includes a mounting base, a switching component, and a first actuating component; A ratchet wheel is rotatably connected to the mounting base; The switching component is rotatably connected to the first actuating component or the mounting base, and the switching component is provided with a pawl for mating connection to the ratchet wheel; The first actuating component is movably connected to the mounting base, and the first actuating component is provided with a top block disposed adjacent to the switching component; When a force is applied to the first actuating component to drive the mounting base to rotate counterclockwise, the pawl passes over the ratchet teeth on the ratchet wheel; when a force is applied to the first actuating component to drive the mounting base to rotate clockwise, the top block pushes the switching component so that the pawl moves away from the ratchet wheel.

2. The locking device according to claim 1, characterized in that It further includes a first elastic member, and two ends of the first elastic member are respectively connected to the mounting base and the switching component, and the elastic force of the first elastic member causes the pawl to have a tendency to move towards the ratchet wheel.

3. The locking device according to claim 1, characterized in that, The switching component is provided with a transmission block disposed adjacent to the top block, the transmission block and the pawl are respectively located at two ends of the switching component, and the top block can push the transmission block so that the pawl moves away from the ratchet wheel.

4. The locking device according to claim 1, characterized in that, The mounting base has a first end face, the first actuating component has a second end face, and there is a gap between the first end face and the second end face.

5. The locking device according to claim 1, characterized in that, The switching component includes a first connecting arm and a second connecting arm connected to each other, the first connecting arm is rotatably connected to the first actuating component, the end of the second connecting arm is provided with the pawl, and the first connecting arm and the second connecting arm are inclined; The top block can push the first connecting arm so that the pawl moves away from the ratchet wheel.

6. The locking device according to claim 5, characterized in that, The ratchet wheel is provided with internal ratchet teeth.

7. The locking device according to any one of claims 1 to 6, characterized in that, It further includes a second actuating component rotatably connected to the first actuating component.

8. The locking device according to claim 7, wherein, It further includes a second elastic member, and two ends of the second elastic member are respectively connected to the first actuating component and the second actuating component.

9. The locking device according to claim 7, characterized in that, The first actuating component and the second actuating component are rotatably connected through a damping rotating shaft, and the damping rotating shaft provides damping for the two when they rotate relative to each other.

10. A display device, characterized in that, It includes a locking device according to any one of claims 1 to 9.

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