WO2014015659A1

WO2014015659A1 - Display lifting device

Info

Publication number: WO2014015659A1
Application number: PCT/CN2013/070108
Authority: WO
Inventors: 项乐宏; 姜艺; 林涛; 李宇峰
Original assignee: 宁波乐歌视讯科技股份有限公司
Priority date: 2012-07-23
Filing date: 2013-01-06
Publication date: 2014-01-30
Also published as: CN102748569B; CN102748569A

Abstract

A display lifting device comprises an underframe (1), a panel (2), and a support piece (3). A fixing guide rail (10) is disposed on an underframe fixedly disposed on a wall surface or on another bracket. A movable guide rail (20) capable of sliding along the fixing guide rail is disposed on a panel fixedly connected to the display. One end of the support piece is connected to the underframe and the other end is connected to the panel to support the panel. According to the display lifting device, a user only needs to push the display upward or downward when needing to adjust the height of the display, thereby achieving the objective of adjusting the height of the display.

Description

Display lifting device

Technical field

The present invention relates to the field of home appliance technology, and more particularly to a display lifting device. Background technique

LCD TVs have gradually replaced traditional CRT (Cathode Ray Tube) TVs with their small size, light weight, energy saving and high resolution. In particular, the liquid crystal display has the characteristics of light weight and can be suspended from the wall by a hanger, thereby saving the space in the room.

With the development of technology in recent years, the functions of LCD TVs are becoming more and more abundant. In order to enable the user to obtain a better operating experience, those skilled in the art have designed a touch-sensitive LCD TV with a touch screen, and the user can interact with the TV through the touch, and the operation of the LCD TV is completed. It has been welcomed by users.

Due to the different heights of different users, the optimal suspension height of the touch-type LCD TV is different when different users operate the touch-type LCD TV. At the same time, for the same user, when the user stands before the touch-type LCD TV, or the user sits at a certain distance before the touch-type LCD TV, the touch-type LCD TV is in both cases. There are different optimal suspension heights in the middle. Therefore, users need to make frequent adjustments to their level when using a touch-sensitive LCD TV.

However, the current LCD TV racks on the market are generally fixed racks, and some of them have adjustable function racks, which can only adjust the front-rear distance, horizontal deflection angle and pitch deflection angle of the LCD TV. If you need to adjust the level of the LCD TV. To adjust the height, you need to remove the LCD TV from the cradle and fix the LCD TV to the higher fixing hole. It can be seen that when using the existing fixed pylon, the user cannot adjust the height of the LCD TV mounted thereon.

From the above, how to provide a display lifting device to achieve the level adjustment of the wall-mounted display has become a technical problem that needs to be solved by those skilled in the art. Summary of the invention

In view of the above, the present invention provides a display lifting device for the purpose of adjusting the height of a wall mounted display.

To achieve the above object, the present invention provides the following technical solutions:

A display lifting device includes a chassis for fixing a wall or other bracket and a panel for fixedly connecting with the display, and further comprising:

a fixed rail disposed on the chassis;

a movable rail that is disposed on the panel and slid along the fixed rail to realize lifting of the panel; and

One end is connected to the chassis, and the other end is connected to the panel to support the support of the panel.

Preferably, in the above display lifting device, the support member comprises a chute block, a linkage rod and a first gas spring;

The chute block is fixedly disposed on the panel, and a chute is disposed at a bottom of the chute block;

One end of the linkage rod is hinged to the bottom frame, and the other end is hinged to the first gas spring, and the first slider of the linkage rod is fixedly disposed to be inserted into the sliding slot and sliding along the sliding slot;

One end of the first gas spring is hinged to the chassis, and the other end is hinged to the linkage rod.

Preferably, in the above display lifting device, further comprising an adjustable connecting device connecting the first gas spring and the bottom frame, the adjustable connecting device comprising:

a second slider hinged to one end of the first gas spring, the bottom of the second slider is provided with a threaded hole; a side limiting block fixedly disposed on the chassis and including at least two inner sides parallel to each other and a bottom limit baffle a slider slot, the bottom limit baffle is provided with an internal thread hole corresponding to the position of the threaded hole, and the second slider is slidably disposed in the slider slot;

a screw fixing seat provided with an external threaded portion on the outer surface, and a through hole is disposed in the inner surface thereof, and the screw fixing seat is screwed into the internally threaded hole;

The adjusting screw disposed in the threaded hole has a larger diameter of the screw cap of the adjusting screw than the inner diameter of the through hole, and a positioning shoulder having a diameter larger than the inner diameter of the through hole is disposed under the screw cap, and the adjusting screw and the screw fixing seat are positioned. Preferably, in the above display lifting device, the angle between the plane of the inner surface of the side limiting block and the vertical direction is 1° to 3°, and the plane is inclined to the side where the first gas spring is located.

Preferably, in the above display lifting device, the sliding device friction member sleeved outside the first slider is further included.

Preferably, in the above display lifting device, the roller further comprises a roller disposed on the first slider, and the roller is embedded in the sliding slot.

Preferably, in the above display lifting device, the first gas spring is a self-locking type gas spring or a balanced type gas spring.

Preferably, in the above display lifting device, the support member is specifically at least one second gas spring disposed parallel to the fixed rail.

Preferably, in the above display lifting device, the two second gas springs are symmetrically disposed in the display lifting device.

Preferably, in the above display lifting device, the second gas spring is specifically a self-locking type gas spring or a balanced type gas spring.

The display lifting device provided by the present invention comprises a chassis, a panel and a support member, wherein the chassis is fixedly disposed on the wall surface or other brackets, and the fixed rail is disposed thereon; the panel is fixedly connected to the display, and the panel is provided with A movable rail that can slide along a fixed rail; one end of the support member is connected to the chassis, and the other end is connected to the panel to support the panel.

When the display lifting device provided by the present invention is used, it is fixed to a wall or other bracket by a chassis to fix the display to the panel. Since the panel is slidably disposed on the chassis fixed to the chassis through the movable rail and the fixed rail, the support member disposed between the panel and the chassis can support the panel and limit the relative distance between the two. When the user needs to raise the height of the display, simply push the display up, and when you need to lower the height of the display, push the display down. Therefore, the display lifting device provided by the present invention achieves the purpose of adjusting the height of the display. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic structural view of a display lifting device according to an embodiment of the present invention;

2 is a schematic structural view of a display lifting device using a multi-link support member;

3 is a schematic diagram of the tubular force analysis of the display lifting device using the multi-link support member; FIG. 4 is a schematic structural view of the gas spring and the chassis connected by the adjustable connecting device;

Figure 5 is a partial structural view of the support member and the adjustable connecting device;

Figure 6 is a partial structural schematic view of the adjustable connecting device;

7 is a partial structural schematic view of an adjustable connecting device in another embodiment;

8 is a partial structural schematic view of an adjustable connecting device in another embodiment;

Fig. 9 is a schematic view showing the analysis of the tubular force of the display lifting device using the adjustable connecting device; Fig. 10 is a structural schematic view of the display lifting device using only the gas spring as the supporting member.

In the above figure 1-10:

The chassis 1, the panel 2, the support member 3, the fixed rail 10, the movable rail 20, the second gas spring 30, the chute block 31, the linkage rod 32, the first gas spring 33, the chute 310, the first slider 320, a second slider 40, a slider groove 41, a screw fixing seat 42, an adjusting screw 43, a slider pressing plate 44, a screw hole 400, a side limiting block 410, a bottom limiting baffle 411, an internally threaded hole 412, and a male thread portion 420 and stepped holes 421. DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention disclose a display lifting device for achieving the purpose of adjusting the horizontal height of a wall mounted display.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and Not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

As shown in FIG. 1 , the display lifting device disclosed in the embodiment of the present invention comprises a chassis 1 , a panel 2 and a support member 3 , wherein the chassis is fixedly disposed on a wall surface or other brackets, and the chassis 1 is provided with a fixed rail. The panel 2 is fixedly connected to the display, and is provided with a movable rail 20 slidable along the fixed rail 10; the length of the support member 3 is expandable and contractible, and one end thereof is connected to the chassis 1 and the other end is connected to the panel 2.

When the display lifting device provided by the embodiment of the present invention is used, it is fixed on the wall surface or other bracket by the chassis, and the display is fixed on the panel 2. Generally, after being mounted in position, the fixed rail 10 is fixed. The length direction is perpendicular to the horizontal plane. Since the panel 2 is slidably disposed on the chassis 1 fixed to the chassis through the movable rail 20 and the fixed rail 10, the support member 3 disposed between the panel 2 and the chassis 1 can support the panel 2 and limit the bottom. The relative distance between the frame 1 and the panel 2, when the user needs to raise the height of the display, only the display is pushed up, and when the height of the display needs to be lowered, the display can be pushed down. Therefore, the embodiment of the present invention The display lifting device provided achieves the purpose of adjusting the height of the display.

Since the support member 3 in the display lifting device can be implemented in various ways, the specific structure is not described in the above embodiment. The structure of the support member 3 will be specifically described below. It will be understood by those skilled in the art that the specific structure of the support member 3 may have other implementations, and is not limited to the following specific description.

As shown in FIG. 2, in the display lifting device provided by the embodiment of the present invention, the support member 3 includes a chute block 31, a linkage rod 32, and a first gas spring 33.

The chute block 31 is fixedly disposed on the panel 2, and the chute block 310 is provided at the bottom of the chute block 31. There is a plurality of fixing manners between the chute block 31 and the panel 2, such as welding, riveting or fixing by fasteners. Preferably, in the embodiment, the chute block 31 and the panel 2 are fixed by bolts. .

One end of the linkage rod 32 is hinged to the chassis 1 and the other end thereof is hinged to the end of the first gas spring 33. The linkage rod 32 is also fixedly disposed with a first slider 320 that can be inserted into the sliding slot 310, and the first sliding portion Block 320 is slidable along chute 310. It is conceivable that the first slider 320 can be linked by fasteners The fixed connection of the rod 32 may also be a unitary structure with the first slider 320, that is, the first slider 320 is a projection on the linkage rod 32.

One end of the first gas spring 33 is hinged to the above-mentioned linkage rod 32, and the other end is hinged to the chassis 1, and at the same time, the height of the hinge shaft between the first gas spring 33 and the chassis 1 after the display lifting device is installed in position It is lower than the level of the hinge axis between the linkage rod 32 and the chassis 1.

Next, the force analysis of the support member 3 in the display lifting device disclosed in the above embodiment is performed. It will be understood by those skilled in the art that the model shown in Fig. 3 is a tubular shape for stress analysis of the support member 3.

As shown in FIG. 3, the rod A and the rod B represent the fixed rail 10, which is fixedly connected to the ground; and the slider D and the slider E respectively sleeved on the rod A and the rod B represent the movable rail 20, the slider D And the slider E can slide along the rod A and the rod B respectively; the two ends of the rod C are fixedly connected with the slider D and the slider E, respectively, the slider H is sleeved on the rod C, and can slide along the rod C; the rod a Representing the linkage rod 32, one end of which is hinged to the ground, the other end hinged with the rod b representing the first gas spring 33, and at the same time, the rod a is hinged with the slider H; the rod b represents the first gas spring 33, one end of which is opposite to the above The rod a is hinged and the other end is hinged to the ground.

The angle Θ is the angle between the rod a and the vertical direction, and represents the angle between the axis of the linkage rod 32 and the normal line perpendicular to the ground; the angle α is the angle between the rod b and the vertical direction, and represents the first gas spring 33. The angle between the axis and the normal perpendicular to the ground.

1 is the distance between the rod a and the slider H from the hinged shaft to the rod a to the ground hinge axis, which is a constant; L is the vertical distance between the rod a and the ground hinged rod b and the ground hinge axis, which is constant.

! ^ is the length of the arm at the hinge axis of G to the rod, which is a variable positively related to the sine of the angle ,, 1 X sin6.

L ₂ is the length of the arm at the hinge axis of F to the rod b, which is a variable positively related to the sine of the angle α, L ₂ = L ^χ sina.

When the user pushes the display mounted on the display lifting device up or down, the slider D, the rod C and the slider E which are fixedly connected in the model shown in FIG. 3 are horizontally upward or upward along the rod A and the rod B. Move down. At this time, the slider H sleeved on the rod C is also displaced according to the movement of the rod C. Since the rod a is hinged with the slider H, the rod a will oscillate with its hinge axis with the ground, the corner Θ A change occurs, and at the same time, the rod b hinged at one end to the rod a is also oscillated about its hinge axis with the ground, and the angle α changes.

The rod a, that is, the linkage rod 32 is selected. For the research object, the external force received by the rod a when the display lifting device is balanced includes:

Gravity G, in general G is equal to the gravity of the display, which acts on the hinge axis of the rod a and the slider H, and the direction is vertically downward;

The elastic force F, F is the elastic force of the first gas spring 33, which acts on the hinge shaft of the rod a and the rod b, and the direction thereof is along the axis direction of the rod b and is directed obliquely upward;

Supporting force F, F is the supporting force of the hinge axis between the rod a and the ground to the rod a, and its direction is directed obliquely upward along the axis direction of the rod a.

When the rod a remains stationary without being subjected to other external forces, the bending moment of the rod a is calculated from the hinge axis of the rod a and the ground, and is:

At the same time, there is a certain frictional force f between the piston rod of the first gas spring 33 and the cylinder, and there are:

(F-f)≤G---^≤(F+ f)

L sin a

Further, there are:

( _F — _f) . _{≤ G ≤ (F + f)} .

1 sin/9 1 sin/9

However, when the above inequality is established, the rod a can remain stationary, that is, the display lifting device can balance the display mounted thereon within a certain height range.

It can be seen from the above analysis that the display lifting device provided by the embodiment of the present invention achieves the purpose of adjusting the level of the wall mounted display. In the display lifting device provided by the above embodiment, the maximum elastic force required of the first gas spring 33 is positively correlated with the weight of the mounted display, that is, for the display lifting device in which the first gas spring 33 has been selected. The weight of the display to which it is applied is constant. Therefore, for displays of different weights, it is necessary to cooperate with the first gas springs 33 having different minimum elastic forces, which increases the cost of the process of producing the display lifting device, and at the same time, if the user wishes to purchase the The display lifting device can be applied to different weight displays, so it is necessary to purchase multiple sets of display lifting devices at the same time or purchase a plurality of different gas springs for corresponding replacement. Therefore, the display lifting device provided in this embodiment can be applied to different weight displays by adding an adjustable connecting device.

Referring to FIG. 4 and FIG. 5, the display lifting device provided in this embodiment further includes an adjustable connecting device, and the first gas spring 33 and the bottom frame 1 are connected by the adjustable connecting device.

The adjustable connecting device includes a second slider 40 hinged to the end of the first gas spring 33, a slider slot 41 fixedly disposed on the chassis 1, a screw mount 42 and an adjusting screw 43.

The bottom of the second slider 40 is provided with a threaded hole 400, and the second slider 40 may be a cylinder or a polygonal prism. Preferably, in the embodiment, the second slider 40 is a rectangular parallelepiped.

The slider slot 41 includes at least two side limiting blocks 410 and a bottom limiting baffle 411, wherein the inner side faces of the two side limiting blocks 410 are parallel to each other, and the bottom limiting baffle 411 is provided with a thread. The hole 400 is corresponding to the internally threaded hole 412; the second slider 40 is slidably disposed in the slider groove 41.

The screw holder 42 is mounted in the above-mentioned internally threaded hole 412, and an outer threaded portion 420 is provided on the outer surface thereof, and a through hole 421 is also provided in the inside.

The threaded portion of the adjusting screw 43 is screwed into the threaded hole 400, and the maximum diameter of the screw cap is smaller than the inner diameter of the through hole 421, and the positioning shoulder having a diameter larger than the inner diameter of the through hole 421 is disposed under the screw cap, that is, the adjusting screw 43 passes. The screw cap is inserted into the stepped hole 421 to be positioned against it. The operator can operate the adjustment screw 43 through the through hole 421 using a tool such as a screwdriver or an hex key.

When using the display lifting device provided by the embodiment, if it is necessary to replace the display with different weights, firstly disassemble the old display and install the new display, and then adjust by rotation The screw 43 raises or lowers the level of the hinge shaft between the first gas spring 33 and the chassis 1, so that the display lifting device can be adapted to the display of different weights.

It will be understood by those skilled in the art that the purpose of providing the adjustable connecting device is to achieve height adjustment of the hinge end of the first gas spring, and there are various specific implementations. Figure 6 is a partial structural view of the adjustable connecting device in the above embodiment, the internally threaded hole 412 is a stepped hole, the larger inner diameter portion is an internally threaded hole, and the smaller inner diameter portion is a light hole; the adjusting screw 43 is fixed by the screw fixing seat 42 is pressed against the internally threaded bore 412. On the basis of the above embodiment, the structure of the adjustable connecting device can also be as shown in Fig. 7. The inner diameter of the internally threaded hole 412 is uniform, and the adjusting screw 43 is fixed in the internally threaded hole 412 by the two screw fixing seats 42. Furthermore, the adjustable connecting device in the display lifting device provided by the embodiment of the present invention can also be as shown in FIG. 8. The inner diameter of the female screw hole 412 is uniform, and the outer diameter of the adjusting screw 43 is the same as the inner diameter of the female screw hole 412; The adjusting screw 43 is screwed into the internally threaded hole 412 with the screw cap facing downward, and its end portion is positioned against the second slider 40. The operator can also use the tool to rotate the adjusting screw 43 to adjust the height of the hinged end of the first gas spring.

Further, in the display lifting device provided in the above embodiment, the slider pressing plate 44 disposed on the side limiting block 410 is further included. Referring to Fig. 5, the slider pressing plate 44 fixes the second slider 40 in the slider groove 41 to prevent it from accidentally falling from the slider groove 41.

Preferably, the slider platen 44 is provided with a pointer portion for indicating the position of the second slider 40. The operator can observe the positional change of the second slider 40 by using the set pointer portion, thereby achieving precise adjustment of the display lifting device.

Please refer to FIG. 9, FIG. 9 is a force model of the display lifting device provided by the above embodiment. 6 is the same as FIG. 3, and will not be described again here; unlike the model shown in FIG. 3, in FIG. 6, the rod b, that is, the first gas spring 33, is hinged to the slider I. , the slider I is sleeved on the rod J fixed on the ground, and at the same time, the slider I can slide on the rod J, or can be fixed on the rod J

Still established.

By adjusting the height of the slider I on the rod J, the horizontal distance between the hinge axis of the rod a and the ground and the hinge axis of the rod b and the ground, that is, the size of L, can be adjusted. When G is increased, the height of the slider I on the rod J can be lowered, at which time L is increased, so that the right half of the above inequality is still established; and when G is decreased, the slider I can be raised. The height on the rod J, at which point L decreases, causes the left half of the above inequality to remain true.

From the above, the display lifting device provided by the embodiment can realize the same display lifting device by adding an adjustable connecting device for adjusting the horizontal level of the hinge shaft between the first gas spring 33 and the chassis 1 Suitable for the purpose of different weight displays.

It can be understood by those skilled in the art that the adjustable connecting device in the above embodiment can also be disposed between the linkage rod 32 and the chassis 1, that is, by adjusting the height of the hinge shaft of the linkage rod 32 and the chassis 1, to adjust the above formula. The size of the middle L can also be achieved for the same display lifting device to be suitable for different weight displays.

Further, in the display lifting device provided by the above embodiment, the plane of the inner surface of the side limiting block 410 is at an angle of 1° to 3° with respect to the vertical direction, and the plane is inclined toward the first gas spring 33. side. Since the second slider 40 is hinged with one end of the first gas spring 33, the direction of the force of the first gas spring 33 against the second slider 40 is along the axis of the first gas spring 33, and the second slider 40 is pressed against On the side wall of the slider groove 41. If the moving direction of the second slider 40 is a vertical direction, the force applied by the first gas spring 33 to the second slider 40 is larger in the direction perpendicular to the side wall of the slider groove 41, resulting in a second slip. The friction between the block 40 and the side wall of the slider groove 41 is large, and the movement of the second slider 40 is difficult. The side limiting block 410 is disposed such that the inner surface is at an angle of Γ to 3° from the vertical direction, so that the sliding direction of the second slider 40 is at the same angle as the vertical direction, which reduces the first gas spring 33. The force acting on the second slider 40 in the direction perpendicular to the side wall of the slider slot 41 makes the movement of the second slider 40 smoother, thereby making the user feel smoother when pushing the display.

Preferably, in the display lifting device provided by the above embodiment, the plane of the inner surface of the side limiting block 410 is at an angle of 2° with respect to the vertical direction. Further, on the basis of the above embodiment, the display lifting device provided in the embodiment further includes a sliding groove friction member 34, and the sliding groove friction member 34 is sleeved on the first sliding block 320. It can be understood by those skilled in the art that the sliding groove friction member 34 is a friction resistant material, such as steel in a metal material, ductile iron, copper, or the like, or a non-metallic material such as plastic or asbestos.

In the display lifting device provided by the above embodiment, the first slider 320 is in contact with the sliding block 31 directly or through the sliding groove friction member 34 sleeved on the first sliding block 320, and the sliding friction is between the two. Its movement process is more laborious. Further, the display lifting device provided in this embodiment further includes a roller disposed on the slider 320. The roller is rotatably disposed on the slider 320 and embedded in the sliding slot 310. When the slider 320 moves relative to the chute block 31, the roller disposed on the slider 320 converts the sliding friction into rolling friction, which reduces the friction during the movement, and causes the slider 320 and the chute block 31 to Relative movement is smoother.

Specifically, in the display lifting device provided in the above embodiment, the first gas spring 33 is a self-locking type gas spring or a balanced type gas spring.

The self-locking gas spring can be stopped at any position in the stroke by means of some release mechanisms, and has a large locking force after stopping, and can usually reach 10000N or more. By using a self-locking gas spring, the operator can lock the position of the display lift after adjusting the height of the display to prevent accidental movement of the display.

The balanced gas spring is also called the random gas spring and the friction gas spring. Its characteristics are between the free gas spring and the self-locking gas spring. The valve spring is closed or the piston rod is telescopic to lock the gas spring. Purpose, without any external structure, can stop anywhere in the itinerary. The balanced gas spring also achieves the purpose of preventing accidental movement of the display, but the balanced gas spring does not require an additional locking device and operates more easily than a self-locking gas spring.

In the display lifting device provided by the above embodiment, the hinge shaft between the linkage rod 32 and the chassis 1 and the hinge shaft between the gas spring 33 and the chassis 1 are located at the hinge shaft between the linkage rod 32 and the gas spring 33. The same side. This arrangement can effectively control the volume of the display lifting device, but also causes the chassis 1 to be unevenly stressed, and the chassis 1 is easily damaged when the display lifting device load is large. Further, under the space-adjustable adjustment, the hinge shaft between the linkage rod 32 and the chassis 1 and the hinge shaft between the gas spring 33 and the chassis 1 may be located at the hinge axis between the linkage rod 32 and the gas spring 33. The opposite side, that is, the hinge shaft between the linkage rod 32 and the chassis 1 and the hinge shaft between the gas spring 33 and the chassis 1 are approximately symmetrically disposed in the display lifting device. This arrangement can effectively adjust the stress point of the chassis 1 so that the parts of the chassis 1 are evenly stressed to improve their service life.

The above embodiment provides a display lifting device for adjusting the level of the wall mounted display by using a multi-link mechanism. The present invention also discloses a gas spring and a single tube only for the consideration of the structure of the cylindrical device. A display lifting device that adjusts the level of the wall-mounted display.

Referring to FIG. 10, on the basis of the above embodiments, in the display lifting device provided in this embodiment, the support member 3 includes only the second gas spring 30, and the second gas spring 30 is centrally disposed in the display lifting device. One end is connected to the chassis 1 and the other end is connected to the panel 2.

It can be understood by those skilled in the art that the maximum load-bearing capacity of the gas springs currently available on the market is above 2500N, that is, it can load more than 250KG; and the weight of common displays generally does not exceed 50KG. The lifting device uses a gas spring to fully adjust the level of the wall-mounted display.

Preferably, in the display lifting device provided by the above embodiment, the two second gas springs 30 are symmetrically disposed in the display lifting device.

Further, in the display lifting device provided in the above embodiment, the second gas spring 30 is a self-locking gas spring or a balanced gas spring.

The balanced gas spring is also called the random gas spring and the friction gas spring. Its characteristics are between the free gas spring and the self-locking gas spring. The valve spring is closed or the piston rod is telescopic to lock the gas spring. Purpose, without any external structure, can stop anywhere in the itinerary. The balanced gas spring also achieves the purpose of preventing accidental movement of the display, but the balanced gas spring does not require an additional locking device and operates more easily than a self-locking gas spring. Further, the display lifting device provided by the embodiment of the invention further includes a vertical angle adjusting mechanism, a horizontal angle adjusting mechanism or a horizontal stretching mechanism. Considering that there are already LCD TV brackets with vertical angle adjustment mechanism, horizontal angle adjustment mechanism or horizontal telescopic mechanism on the market, the specific structure will not be described here. It can be understood by those skilled in the art that the display lifting device provided by the embodiment of the present invention can be added on the basis of the existing liquid crystal television bracket provided with the vertical angle adjusting mechanism, the horizontal angle adjusting mechanism or the horizontal telescopic mechanism. It has the function of adjusting the level of the display. Meanwhile, the display lifting device provided by the present invention can be combined with any one, two or all three of the above three mechanisms to provide a display stand having different combined functions.

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but the scope of the inventions

Claims

claims

1. A display lifting device, including a chassis for fixed installation on a wall or other brackets and a panel for fixed connection with the display, characterized in that it also includes:

Fixed guide rails provided on the chassis;

A movable guide rail arranged on the panel and sliding along the fixed guide rail to realize the lifting and lowering of the panel and

One end is connected to the chassis, and the other end is connected to the panel to support the support member of the panel.

2. The display lifting device according to claim 1, wherein the support member includes a chute block, a linkage rod and a first gas spring;

The chute block is fixedly arranged on the panel, and a chute is provided at the bottom of the chute block; one end of the linkage rod is hinged to the chassis, and the other end is hinged to the first gas spring, so The linkage rod is fixed with a first slider that can be inserted into the chute and slide along the chute; one end of the first gas spring is hinged to the chassis, and the other end is hinged to the linkage rod.

3. The display lifting device according to claim 2, further comprising an adjustable connection device connecting the first gas spring and the chassis, and the adjustable connection device includes:

A second slider hinged to one end of the first gas spring, with a threaded hole provided at the bottom of the second slider;

A slider groove fixedly provided on the chassis and including at least two side limiting blocks with inner surfaces parallel to each other and a bottom limiting baffle. The bottom limiting baffle is provided with a position corresponding to the threaded hole. Corresponding internal threaded hole, the second slider is slidably disposed in the slider groove;

A screw holder with an external thread portion is provided on the outer surface, and a through hole is provided inside, and the screw holder is screwed into the internal thread hole;

An adjusting screw is provided in the threaded hole. The maximum diameter of the screw cap of the adjusting screw is smaller than the inner diameter of the through hole. A positioning shoulder with a diameter larger than the inner diameter of the through hole is provided below the screw cap. The adjusting screw The screw is positioned relative to the screw fixing seat.

4. The display lifting device according to claim 3, wherein the angle between the plane where the inner surface of the side limiting block is located and the vertical direction is 1° to 3°, and the plane is inclined toward the first air The side where the spring is located.

5. The display lifting device according to any one of claims 2 to 4, further comprising a chute friction member sleeved on the outside of the first slide block.

6. The display lifting device according to any one of claims 2 to 4, further comprising a roller provided on the first slide block, and the roller is embedded in the chute.

7. The display lifting device according to any one of claims 2 to 4, characterized in that the first gas spring is a self-locking gas spring or a balanced gas spring.

8. The display lifting device according to claim 1, wherein the support member is at least one second gas spring arranged parallel to the fixed guide rail.

9. The display lifting device according to claim 8, wherein the two second gas springs are symmetrically arranged in the display lifting device.

10. The display lifting device according to claim 9, wherein the second gas spring is a self-locking gas spring or a balanced gas spring.