Lifting support and display device

Abstract

The utility model discloses a lifting support and a display device, and relates to the technical field of supports, the lifting support comprises a supporting seat, a lifting seat, a first constant force spring, a second constant force spring and a switching assembly, and a sliding cavity is formed in the supporting seat; the lifting seat is slidably arranged in the sliding cavity in the vertical direction; the first constant force spring is arranged on the lifting seat; the second constant force spring is fixedly connected with the supporting base and located between the lifting base and the cavity wall of the sliding cavity. The switching assembly comprises a movable part and a switching structure, the movable part is arranged on the lifting base, and the movable part can do reciprocating motion towards the side where the second constant force spring is arranged relative to the lifting base, so that the movable part is provided with a first load position located above the second constant force spring and a second load position staggered with the second constant force spring; the switching structure is used for driving the movable part to move. The display support aims to solve the problem that the lifting force value of an existing display support cannot be adjusted.

Description

Technical Field

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

[0002] Monitor stands are used to stably install and support display screens. Common monitor stands on the market have the functions of lifting and rotating adjustment, allowing users to adjust the position of the display screen according to their own needs to adapt to their own visual needs and comfort. For stands with lifting and adjusting functions, a constant force spring will be set in the lifting structure to provide elastic force to balance the gravity of the monitor, so that the monitor can be lifted and adjusted at different positions along the stand and fixed at different positions.

[0003] Currently, the lifting brackets for monitors on the market are usually designed to match monitors within a specific weight range, that is, the lifting force value of the lifting bracket is determined according to the weight of the target monitor to achieve a better lifting effect and ensure the reliability and stability of the display screen lifting process.

[0004] However, since display screens of different sizes and models have different weights, the lifting force value of the existing lifting bracket is matched with the weight of the display. Therefore, if a display screen of other weight is replaced, the lifting force value will not match, resulting in insufficient or excessive lifting force of the lifting bracket, thereby affecting the overall performance and stability of the display. Utility Model Content

[0005] The main purpose of the utility model is to provide a lifting bracket and a display device, aiming to solve the problem that the existing display bracket cannot adjust the lifting force value.

[0006] To achieve the above purpose, the lifting bracket proposed by the utility model includes:

[0007] A support seat, wherein a sliding cavity is formed inside the support seat;

[0008] A lifting seat, the lifting seat is slidably disposed in the sliding cavity along an up-down direction;

[0009] A first constant force spring, wherein the first constant force spring is disposed on the lifting seat, and a tension end of the first constant force spring is fixedly connected to a cavity wall of the sliding cavity;

[0010] a second constant force spring, the second constant force spring being located between the lifting seat and the cavity wall of the sliding cavity, and a tension end of the second constant force spring being fixedly connected to the support seat; and

[0011] A switching assembly, the switching assembly comprising a movable part and a switching structure, the movable part being arranged on the lifting seat, the movable part being able to reciprocate relative to the lifting seat toward the side where the second constant force spring is arranged, so that the movable part has a first load position located above the second constant force spring and a second load position offset from the second constant force spring; the switching structure is used to drive the movable part to move between the first load position and the second load position.

[0012] In one embodiment, the lifting seat is respectively formed with a guide channel and a mounting channel connected with the guide channel in the direction close to and away from the second constant force spring, and the mounting channel is formed with an opening on a side of the lifting seat away from the second constant force spring; a part of the structure of the movable member is movably arranged in the guide channel;

[0013] The switching structure includes a traction member and a switching member, the switching member is movably arranged in the installation channel, one end of the switching member exposes the opening of the installation channel, the other end of the switching member is fixedly connected to the traction member, and one end of the traction member away from the switching member passes through the installation channel to extend into the guide channel and connect with the movable member.

[0014] In one embodiment, the switching member includes a main body and a first rotating shaft, the main body includes a first toggle arm and a second toggle arm connected to the first toggle arm at an angle; the first toggle arm is exposed at the opening of the mounting channel; the second toggle arm is connected to the traction member; the first rotating shaft is passed through the connection between the first toggle arm and the second toggle arm, so that the main body can be rotatably arranged on the groove wall of the mounting channel.

[0015] In one embodiment, a side wall of the installation channel is provided with a moving groove extending along the moving direction of the moving member; the switching structure further comprises a moving seat, the moving seat is movably arranged in the moving groove, and the moving seat is formed with a second rotating shaft;

[0016] The pulling member is a wire, and the wire passes around the second rotating shaft and is connected to the second toggle arm;

[0017] In which, during the rotation of the main body, the second toggle arm can abut against the side of the moving seat close to the second constant force spring and drive the moving seat to move away from the second constant force spring, or the first toggle arm can abut against the side of the moving seat away from the second constant force spring and drive the moving seat to move close to the second constant force spring.

[0018] In one embodiment, the lifting seat includes a supporting column and a mounting seat connected to one side of the supporting column, wherein:

[0019] A limiting channel is provided on a side of the support column away from the mounting seat, and the limiting channel is arranged through the support column along the moving direction of the movable part;

[0020] The mounting seat is provided with the mounting channel on one side close to the supporting column, and the mounting channel passes through the mounting seat on one side away from the supporting column to form an opening;

[0021] The first constant force spring is installed on the supporting column, and the second constant force spring is located on a side of the supporting column away from the mounting seat.

[0022] In one embodiment, the movable member includes a connecting rod segment, a limiting rod segment and an abutting rod segment connected in sequence, the connecting rod segment and the limiting rod segment are accommodated in the limiting channel, and a part of the structure of the abutting rod segment extends out of the limiting channel;

[0023] The lifting bracket also includes a cover plate, which is arranged on a side of the support column away from the mounting seat to cover a portion of the opening of the limiting channel. The cover plate is provided with a through hole for the abutting rod segment to pass through, and the diameter of the through hole is smaller than the diameter of the limiting rod segment.

[0024] In one embodiment, the switching structure further comprises a return spring, wherein the return spring is sleeved on the connecting rod segment and is limited in the limit channel;

[0025] The switching assembly further comprises a clamping member movably arranged on a side of the cover plate away from the supporting column, and a limiting groove is provided on a side of the clamping member close to the cover plate;

[0026] When the movable part is at the second load position, the abutting rod section is clamped and limited in the limiting groove; when the movable part is at the first load position, the clamping part is misaligned with the movable part.

[0027] In one embodiment, a first transfer boss is formed on one side of the support column close to the mounting seat, and a first axial hole extending in the up-down direction is formed on the first transfer boss; a second transfer boss is formed on one side of the mounting seat close to the support column, and a second axial hole coaxially arranged with the first axial hole is formed on the second transfer boss;

[0028] The lifting seat further includes a rotation damping assembly, which includes a third rotating shaft and at least one damping washer, wherein the third rotating shaft passes through the first shaft hole and the second shaft hole; the damping washer is sleeved on the third rotating shaft and is used to press against the first transfer boss and the second transfer boss at the axial upper limit position of the third rotating shaft;

[0029] Wherein, the first transfer boss is provided with a wire-passing channel connected with the limiting channel and the installation channel, and the traction member passes through the wire-passing channel.

[0030] In one embodiment, the lifting seat further comprises a mounting frame arranged on a side of the supporting column away from the mounting seat, and the mounting frame is provided with a second mounting groove and a first mounting groove in sequence in the up-down direction; the notch of the second mounting groove is arranged upwards, and is used to abut upwards against the second constant force spring for limiting the position;

[0031] The first constant force spring is installed in the first installation groove.

[0032] The utility model also provides a display device, comprising the lifting bracket mentioned above.

[0033] In the technical solution of the utility model, the lifting seat is arranged on the support seat along the up and down sliding direction, the first constant force spring is arranged on the lifting seat and its tension end is connected to the inner wall of the sliding cavity, the tension end of the second constant force spring is fixedly connected to the support seat but not directly connected to the lifting seat, and a switching component with movable parts and a switching structure is provided to realize whether the lifting seat drives the first constant force spring to move and thus realize supporting display screens of different weights (hereinafter divided into small weight display screens and large weight display screens). Specifically, when it is necessary to assemble a heavy-weight display screen on the lifting seat, the control switching structure drives the movable member to move to the first load position so as to be located above the second constant force spring. Under the action of gravity, the lifting seat moves downward relative to the support seat. On the one hand, the lifting seat drives the first constant force spring to move downward and deforms the first constant force spring. The deformed first constant force spring provides a first supporting force opposite to the descending direction to the lifting frame to support the lifting frame and the display. On the other hand, during the descending process, the lifting seat drives the movable member to abut against the second constant force spring and drives the second constant force spring to move downward. The second constant force spring undergoes elastic deformation to provide a second supporting force opposite to the lifting frame to support the lifting frame. Therefore, when supporting the heavy-weight display screen, the first supporting force provided by the first constant force spring and the second supporting force provided by the second constant force spring cooperate to play a supporting role. When it is necessary to support the light-weight display screen, since the switching structure drives the movable member to the second load position so that the movable member is staggered with the second constant force spring during the descending process, the lifting seat will not deform the second constant force spring, and the lifting seat and the light-weight display screen are only subjected to the first supporting force provided by the first constant force spring. In summary, compared with conventional brackets that set a single force value, the lifting bracket provided in the present application can achieve adjustable lifting force value by flexibly adding or removing the second constant force spring, thereby adapting to monitors of different weights. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 A structural schematic diagram of an embodiment of a lifting bracket provided by the utility model;

[0036] Figure 2 A half-section view of an embodiment of a lifting bracket provided by the utility model (the movable part is located at the first load position);

[0037] Figure 3 A half-section view of an embodiment of a lifting bracket provided by the utility model (the movable part is located at the second load position);

[0038] Figure 4 This is a structural schematic diagram of an embodiment of a display device provided by the utility model.

[0039] Description of Figure Numbers:

[0040] 1000, lifting bracket; 1, support seat; 2, lifting seat; 21, supporting column; 211, limiting channel; 212, first transfer boss; 2121, wire-passing channel; 22, mounting seat; 221, mounting channel; 222, second transfer boss; 223, moving groove; 23, rotary damping assembly; 231, third rotating shaft; 232, damping washer; 24, mounting frame; 241, first mounting groove; 242, second mounting groove; 3, switching assembly; 31, movable part; 3 11. Connecting rod section; 312. Limiting rod section; 313. Abutting rod section; 32. Switching structure; 321. Switching member; 3211. Main body; 3211a. First toggle arm; 3212b. Second toggle arm; 3212. First rotating shaft; 322. Pulling member; 322a. Wire; 323. Moving seat; 3231. Second rotating shaft; 324. Return spring; 33. Clamping member; 331. Limiting groove; 4. First constant force spring; 5. Second constant force spring; 6. Cover plate;

[0041] 2000. Display device; 7. Display screen.

[0042] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0046] The utility model provides a lifting bracket 1000.

[0047] See also Figures 1 to 3In one embodiment of the utility model, the lifting bracket 1000 includes a support seat 1, a lifting seat 2, a first constant force spring 4, a second constant force spring 5 and a switching assembly 3, wherein a sliding cavity is formed inside the support seat 1; the lifting seat 2 is slidably arranged in the sliding cavity along the up and down directions; the first constant force spring 4 is arranged on the lifting seat 2, and the tension end of the first constant force spring 4 is fixedly connected to the cavity wall of the sliding cavity; the second constant force spring 5 is located between the lifting seat 2 and the cavity wall of the sliding cavity, and the tension end of the second constant force spring 5 is fixedly connected to the support seat 1; the switching assembly 3 includes a movable member 31 and a switching structure 32, wherein the movable member 31 is arranged on the lifting seat 2, and the movable member 31 can reciprocate relative to the lifting seat 2 toward the side where the second constant force spring 5 is arranged, so that the movable member 31 has a first load position located above the second constant force spring 5 and a second load position staggered from the second constant force spring 5; the switching structure 32 is used to drive the movable member 31 to move between the first load position and the second load position.

[0048] In the technical solution of the utility model, the lifting seat 2 is arranged on the support seat 1 along the up and down sliding direction, the first constant force spring 4 is arranged on the lifting seat 2 and its tension end is connected to the inner wall of the sliding cavity, the tension end of the second constant force spring 5 is fixedly connected to the support seat 1 but not directly connected to the lifting seat 2, and the switching component 3 with a movable part 31 and a switching structure 32 is provided to realize whether the lifting seat 2 drives the first constant force spring 4 to move, thereby realizing supporting display screens 7 of different weights (hereinafter divided into small weight display screens 7 and large weight display screens 7). Specifically, when it is necessary to assemble the heavy display screen 7 on the lifting seat 2, the control switching structure 32 drives the movable member 31 to move to the first load position so as to be located above the second fixed force spring 5. Under the action of gravity, the lifting seat 2 moves downward relative to the supporting seat 1. On the one hand, the lifting seat 2 drives the first fixed force spring 4 to move downward and deform the first fixed force spring 4. The deformed first fixed force spring 4 provides a first supporting force to the lifting frame in the opposite direction of the descending direction to support the lifting frame and the display. On the other hand, during the descending process, the lifting seat 2 drives the movable member 31 to contact the second fixed force spring 5 and drives the second fixed force spring 5 to move downward. When the lifting frame 7 is in motion, the second constant force spring 5 undergoes elastic deformation to provide a second supporting force opposite to the lifting frame to support the lifting frame. Therefore, when supporting a heavy-weight display screen 7, the first supporting force provided by the first constant force spring 4 and the second supporting force provided by the second constant force spring 5 cooperate to provide support. When it is necessary to support a light-weight display screen 7, the switching structure 32 drives the movable member 31 to the second load position, so that the movable member 31 is offset from the second constant force spring 5 during the descent process. Therefore, the lifting frame 2 will not cause the second constant force spring 5 to deform, and the lifting frame 2 and the light-weight display screen 7 are only subject to the first supporting force provided by the first constant force spring 4. In summary, compared with conventional brackets that set a single force value, the lifting bracket 1000 provided in the present application can achieve adjustable lifting force values ​​by flexibly adding or removing the second constant force spring 5, thereby adapting to displays of different weights.

[0049] In one embodiment of the present application, the lifting seat 2 is respectively formed with a guide channel and an installation channel 221 connected to the guide channel in the direction approaching and away from the second constant force spring 5, and the installation channel 221 is formed with an opening on the side of the lifting seat 2 away from the second constant force spring 5, and part of the structure of the movable part 31 is movably arranged in the guide channel. In this way, the setting of the guide channel can ensure that the movable part 31 maintains the correct direction and path during the movement, so that the movable part 31 can move between the first load position and the second load position more accurately, reduce the deviation and shaking of the movable part 31, and improve the positioning accuracy. Furthermore, in order to facilitate the movement of the movable member 31 along the guide channel, the switching structure 32 includes a pulling member 322 and a switching member 321. The switching member 321 is movably arranged in the installation channel 221. One end of the switching member 321 reveals the opening of the installation channel 221, and the other end of the switching member 321 is fixedly connected to the pulling member 322. One end of the pulling member 322 away from the switching member 321 passes through the installation channel 221 to extend into the guide channel and connect with the movable member 31. The specific structural shape of the switching member 321 is not limited here. For example, the switching member 321 can be rod-shaped or hook-shaped. It only needs one end to be connected to the pulling member 322 and the other end is convenient for the user to operate. It should be added that, since the movable part 31 needs to realize reciprocating motion in the guide channel, when the movable part 31 does not have an automatic reset capability, the selected traction part 322 can be a steel cable or connecting rod used to rigidly connect the movable part 31 and the switching structure 32. When the movable part 31 can realize self-reset (such as through a spring or other pulling mechanism, which will be explained later), the traction part 322 can be made of a nylon rope or polyester rope with a certain elasticity, which can absorb some impact or load by stretching, and can return to its original state after the tension is released, thereby helping to realize the self-reset function.

[0050] Taking into account that when the movable member 31 is pulled to move by the switching member 321, it is inconvenient for the user to observe what gear or position the switching member 321 is in, which may lead to misoperation, in order to solve the above problem, in one embodiment of the present application, the switching member 321 includes a main body 3211 and a first rotating shaft 3212, and the main body 3211 includes a first toggle arm 3211a and a second toggle arm 3212b connected to the first toggle arm 3211a at an angle; the first toggle arm 3211a is exposed at the opening of the mounting channel 221; the second toggle arm 3212b is connected to the traction member 322; the first rotating shaft 3212 is penetrated at the connection between the first toggle arm 3211a and the second toggle arm 3212b, so that the main body 3211 can be rotatably arranged on the groove wall of the mounting channel 221. In this way, the user can observe the angle between the first toggle arm 3211a and the horizontal direction to determine the position of the movable part 31. When the first toggle arm 3211a is pushed outward, the second toggle arm 3212b will rotate with the first rotation axis 3212 as the rotation center, so that the second toggle arm 3212b moves to the side away from the movable part 31, so that the traction member 322 pulls the movable part 31 away from the second constant force spring 5 to the second load position. When the first toggle arm 3211a is pushed toward the inside of the installation channel 221, the second toggle arm 3212b will rotate with the first rotation axis 3212 as the rotation center, so that the second toggle arm 3212b moves to the side close to the movable part 31, so that the traction member 322 pushes the movable part 31 away from the second constant force spring 5 to the first load position.

[0051] Compared with using the switching member 321 set in translation to directly pull the movable member 31, the switching member 321 set in rotation usually needs to rotate at a larger angle to achieve the same length of displacement of the movable member 31. Therefore, in order to solve the above problem, in one embodiment of the present application, the side wall of the installation channel 221 is provided with a moving groove 223 extending along the moving direction of the movable member 31; the switching structure 32 also includes a moving seat 323, the moving seat 323 is movably arranged in the moving groove 223, and the moving seat 323 is formed with a second rotating shaft 3231; the pulling member 322 The wire 322a is a wire 322a, which bypasses the second rotating shaft 3231 and is connected to the second toggle arm 3212b; wherein, during the rotation of the main body 3211, the second toggle arm 3212b can abut against the side of the moving seat 323 close to the second fixed force spring 5 and drive the moving seat 323 to move away from the second fixed force spring 5, or the first toggle arm 3211a can abut against the side of the moving seat 323 away from the second fixed force spring 5 and drive the moving seat 323 to move close to the second fixed force spring 5. By bypassing the wire 322a around the second rotating shaft 3231, the rotational movement of the switching member 321 is directly converted into the linear movement of the moving seat 323, thereby achieving precise movement of the movable member 31 while retaining the original rotation feel, and the movable member 31 can also have obvious displacement when the switching member 321 rotates a small angle. In addition, when the switching member 321 is rotated outward, the second toggle arm 3212b rotates and abuts against the moving seat 323 and drives the moving seat 323 to move outward along the moving groove 223, thereby driving the movable member 31 to the second load position; and when the switching member 321 is rotated inward, the first toggle arm 3211a rotates and abuts against the moving seat 323 and drives the moving seat 323 to move inside the installation space along the moving groove 223, thereby driving the movable member 31 to the first load position. In other embodiments, the traction member 322 can also be a steel cable or connecting rod with a return bend structure, and the return bend position is rotationally connected to the second rotating shaft 3231.

[0052] Further, in an embodiment of the present application, the lifting seat 2 includes a supporting column 21 and a mounting seat 22 connected to one side of the supporting column 21, wherein the limiting channel 211 is opened on the side of the supporting column 21 away from the mounting seat 22, and the limiting channel 211 is arranged through the supporting column 21 along the movement direction of the movable part 31; the mounting seat 22 is opened on the side close to the supporting column 21. The mounting channel 221 is arranged through the side of the mounting seat 22 away from the supporting column 21 to form an opening; the first constant force spring 4 is installed on the supporting column 21, and the second constant force spring 5 is located on the side of the supporting column 21 away from the mounting seat 22. The support column 21 is generally a long strip structure, and the mounting seat 22 is arranged in the upper area of ​​the support column 21. During assembly, an avoidance groove connected to the sliding cavity is generally required to be opened on the outside of the support seat 1 so that the mounting seat 22 can be exposed on the outside of the sliding cavity and can slide on the support seat 1 following the support column 21.

[0053] In one embodiment of the present application, the movable member 31 includes a connecting rod segment 311, a limiting rod segment 312 and an abutting rod segment 313 connected in sequence, the connecting rod segment 311 and the limiting rod segment 312 are accommodated in the limiting channel 211, and a part of the structure of the abutting rod segment 313 extends out of the limiting channel 211. The limiting rod segment 312 moves in the limiting channel 211, which can provide accurate position restriction to ensure that the movable member 31 moves within a predetermined range, and a part of the structure of the abutting rod segment 313 extends out of the limiting channel 211 for contacting the second constant force spring 5. Further, the lifting bracket 1000 also includes a cover plate 6, the cover plate 6 is covered on the side of the supporting column 21 away from the mounting seat 22 to cover part of the opening of the limiting channel 211, and the cover plate 6 is provided with a through hole for the abutting rod segment 313 to pass through, and the diameter of the through hole is smaller than the diameter of the limiting rod segment 312. The diameter of the through hole on the cover plate 6 is smaller than the diameter of the limiting rod segment 312, which limits the limiting rod segment 312 from passing through the through hole, thereby preventing misoperation or assembly errors. The design of the cover plate 6 covers part of the opening of the limiting channel 211, which helps prevent debris from entering and protect internal components.

[0054] In one embodiment of the present application, the switching structure 32 further includes a reset spring 324, which is sleeved on the connecting rod section 311 and limited in the limiting channel 211; when the movable member 31 is in the second load position, the reset spring 324 is compressed in the limiting channel 211, so that the movable member 31 has a tendency to move toward the first load position, so as to realize the automatic reset of the movable member 31. Further, the switching assembly 3 further includes a clamping member 33 movably arranged on the side of the cover plate 6 away from the supporting column 21, and a limiting groove 331 is provided on the side of the clamping member 33 close to the cover plate 6; when the movable member 31 is in the second load position, the abutting rod section 313 is clamped and limited in the limiting groove 331; when the movable member 31 is in the first load position, the clamping member 33 is misaligned with the movable member 31. The clamping member 33 interacts with the abutting rod section 313 through the limiting groove 331 to maintain or lock the movable member 31 in the second load position so as to support the light-weight display screen 7. When the movable member 31 needs to move to the first load position, the clamping member 33 can be removed so that the movable member 31 can be reset under the action of the reset spring 324. Therefore, the reset spring 324 and the clamping member 33 work together to enhance the stability of the movable member 31 in different positions and reduce the possibility of accidental movement.

[0055] Considering that the display screen 7 needs to meet the user's observation needs at different angles when in use, the display screen 7 can be rotatably connected to the lifting bracket 1000. Specifically, in one embodiment of the present application, a first transfer boss 212 is formed on a side of the support column 21 close to the mounting seat 22, and the first transfer boss 212 is provided with a first axial hole extending in the up-down direction; a second transfer boss 222 is formed on a side of the mounting seat 22 close to the support column 21, and the second transfer boss 222 is provided with a second axial hole coaxially arranged with the first axial hole; the lifting seat 2 also includes a rotary The rotary damping assembly 23 includes a third rotating shaft 231 and at least one damping washer 232, and the third rotating shaft 231 is penetrated by the first axial hole and the second axial hole; the damping washer 232 is sleeved on the third rotating shaft 231, and is used to press the first transfer boss 212 and the second transfer boss 222 at the axial upper limit position of the third rotating shaft 231; wherein the first transfer boss 212 is provided with a wire-passing channel 2121 connected with the limiting channel 211 and the mounting channel 221, and the traction member 322 is penetrated by the wire-passing channel 2121. By squeezing the first transfer boss 212 and the second transfer boss 222 by the damping washer 232, additional stability and damping effects can be provided to reduce vibration and noise during rotation and improve the user's rotation feel. In addition, by squeezing the first transfer boss 212 and the second transfer boss 222, the damping washer 232 can exert a certain pressure on the third rotating shaft 231, thereby increasing the fastening force of the connection and reducing looseness, thereby avoiding adverse problems such as jitter and abnormal noise during rotation.

[0056] In one embodiment of the present application, the lifting seat 2 further comprises a mounting frame 24 disposed on the side of the supporting column 21 away from the mounting seat 22, and the mounting frame 24 is provided with a second mounting groove 242 and a first mounting groove 241 in sequence along the up-down direction; the notch of the second mounting groove 242 is disposed upward, and is used to abut against and limit the second fixed force spring 5 upward; the first fixed force spring 4 is installed in the first mounting groove 241. In the process of the lifting seat 2 sliding up and down, the movable member 31 can press the second fixed force spring 5 into the second mounting groove 242, which can ensure that the second fixed force spring 5 plays a role in the correct position, and prevent the second fixed force spring 5 from accidentally falling off or shifting. Of course, it should be added that the first fixed force spring 4 and the second fixed force spring 5 usually need to be installed through a spring fixing seat, and the first fixed force spring 4 and the second fixed force spring 5 can be rotatably arranged on the shaft of the spring fixing seat, so that when the tensile end is fixed, deformation is generated by rotation.

[0057] See also Figure 4The utility model also proposes a display device 2000, which includes a display device 2000. The specific structure of the display device 2000 refers to the above embodiment. Since the display device 2000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lifting bracket, characterized in that: include: A support seat, wherein a sliding cavity is formed inside the support seat; A lifting seat, the lifting seat is slidably disposed in the sliding cavity along an up-down direction; A first constant force spring, wherein the first constant force spring is disposed on the lifting seat, and a tension end of the first constant force spring is fixedly connected to a cavity wall of the sliding cavity; A second constant force spring, wherein the second constant force spring is located between the lifting seat and the cavity wall of the sliding cavity, and a tension end of the second constant force spring is fixedly connected to the support seat; as well as A switching assembly, the switching assembly comprising a movable part and a switching structure, the movable part being arranged on the lifting seat, the movable part being able to reciprocate relative to the lifting seat toward the side where the second constant force spring is arranged, so that the movable part has a first load position located above the second constant force spring and a second load position offset from the second constant force spring; the switching structure is used to drive the movable part to move between the first load position and the second load position.

2. The lifting bracket according to claim 1, characterized in that: The lifting seat is respectively formed with a guide channel and a mounting channel connected with the guide channel in the direction close to and away from the second constant force spring, and the mounting channel is formed with an opening on a side of the lifting seat away from the second constant force spring; a part of the structure of the movable member is movably arranged in the guide channel; The switching structure includes a traction member and a switching member, the switching member is movably arranged in the installation channel, one end of the switching member exposes the opening of the installation channel, the other end of the switching member is fixedly connected to the traction member, and one end of the traction member away from the switching member passes through the installation channel to extend into the guide channel and connect with the movable member.

3. The lifting bracket according to claim 2, characterized in that: The switching member includes a main body and a first rotating shaft, the main body includes a first toggle arm and a second toggle arm connected to the first toggle arm at an angle; the first toggle arm is exposed at the opening of the installation channel; the second toggle arm is connected to the traction member; the first rotating shaft is passed through the connection between the first toggle arm and the second toggle arm, so that the main body can be rotatably arranged on the groove wall of the installation channel.

4. The lifting bracket according to claim 3, characterized in that: The side wall of the installation channel is provided with a moving groove extending along the moving direction of the moving part; the switching structure further comprises a moving seat, the moving seat is movably arranged in the moving groove, and the moving seat is formed with a second rotating shaft; The pulling member is a wire, and the wire passes around the second rotating shaft and is connected to the second toggle arm; In which, during the rotation of the main body, the second toggle arm can abut against the side of the moving seat close to the second constant force spring and drive the moving seat to move away from the second constant force spring, or the first toggle arm can abut against the side of the moving seat away from the second constant force spring and drive the moving seat to move close to the second constant force spring.

5. The lifting bracket according to any one of claims 2 to 4, characterized in that: The lifting seat comprises a supporting column and a mounting seat connected to one side of the supporting column, wherein: A limiting channel is provided on a side of the support column away from the mounting seat, and the limiting channel is arranged through the support column along the moving direction of the movable part; The mounting seat is provided with the mounting channel on one side close to the supporting column, and the mounting channel passes through the mounting seat on one side away from the supporting column to form an opening; The first constant force spring is installed on the supporting column, and the second constant force spring is located on a side of the supporting column away from the mounting seat.

6. The lifting bracket according to claim 5, characterized in that: The movable member comprises a connecting rod segment, a limiting rod segment and an abutting rod segment which are connected in sequence, the connecting rod segment and the limiting rod segment are accommodated in the limiting channel, and a part of the structure of the abutting rod segment extends out of the limiting channel; The lifting bracket also includes a cover plate, which is arranged on a side of the support column away from the mounting seat to cover a portion of the opening of the limiting channel. The cover plate is provided with a through hole for the abutting rod segment to pass through, and the diameter of the through hole is smaller than the diameter of the limiting rod segment.

7. The lifting bracket according to claim 6, characterized in that: The switching structure further includes a return spring, which is sleeved on the connecting rod segment and limited in the limit channel; The switching assembly further comprises a clamping member movably arranged on a side of the cover plate away from the supporting column, and a limiting groove is provided on a side of the clamping member close to the cover plate; When the movable part is at the second load position, the abutting rod section is clamped and limited in the limiting groove; when the movable part is at the first load position, the clamping part is misaligned with the movable part.

8. The lifting bracket according to claim 5, characterized in that: A first transfer boss is formed on one side of the support column close to the mounting seat, and a first shaft hole extending in the up-down direction is formed on the first transfer boss; a second transfer boss is formed on one side of the mounting seat close to the support column, and a second shaft hole coaxially arranged with the first shaft hole is formed on the second transfer boss; The lifting seat further includes a rotation damping assembly, which includes a third rotating shaft and at least one damping washer, wherein the third rotating shaft passes through the first shaft hole and the second shaft hole; the damping washer is sleeved on the third rotating shaft and is used to press against the first transfer boss and the second transfer boss at the axial upper limit position of the third rotating shaft; Wherein, the first transfer boss is provided with a wire-passing channel connected with the limiting channel and the installation channel, and the traction member passes through the wire-passing channel.

9. The lifting bracket according to claim 5, characterized in that: The lifting seat also includes a mounting frame arranged on a side of the supporting column away from the mounting seat, and the mounting frame is provided with a second mounting groove and a first mounting groove in sequence in the up-down direction; the notch of the second mounting groove is arranged upwards, and is used to abut upwards against the second constant force spring for limiting the position; The first constant force spring is installed in the first installation groove.

10. A display device, characterized in that: It comprises the lifting bracket as claimed in any one of claims 1 to 9.

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