CN111043503A

CN111043503A - Telescoping device for display screen

Info

Publication number: CN111043503A
Application number: CN201911415979.8A
Authority: CN
Inventors: 谢云峰; 姚细勇
Original assignee: Guizhou Nanke Zhongkong Technology Co Ltd
Current assignee: Guizhou Nanke Zhongkong Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-21
Anticipated expiration: 2039-12-31
Also published as: CN111043503B

Abstract

The invention relates to the technical field of display supporting structures, in particular to a telescopic device for a display screen, which comprises a base, a mounting plate and a telescopic mechanism, wherein the telescopic mechanism comprises a plurality of supporting frames which are rotatably connected through rotating shafts, a fixed rod is arranged between the rotating shafts corresponding to the telescopic frame, the fixed rod comprises a cylinder body, a piston is slidably connected in the cylinder body, a first connecting rod is arranged on the piston, one end of the first connecting rod is connected with the piston, the other end of the first connecting rod is rotatably connected with the rotating shaft close to a front cavity, a second connecting rod is arranged at the other end of the cylinder body, one end of the second connecting rod is fixedly connected with the cylinder body, the other end of the second connecting rod is rotatably connected with the corresponding rotating shaft. The telescopic device for the display screen has the effects of effectively improving the stability of the display screen, preventing the display screen from shaking, enabling a user not to clearly view the content displayed by the display screen, accelerating eye fatigue of the user and damaging the eyesight health.

Description

Telescoping device for display screen

Technical Field

The invention relates to the technical field of display supporting structures, in particular to a telescopic device for a display screen.

Background

The liquid crystal display bracket has the main functions of supporting the liquid crystal display screen, ensuring that the optimal use distance and angle are kept between a user and the display screen, and being easy to adjust according to the requirements of the user, the liquid crystal display screen has wider and wider application range, is not only used in families and office places, but also widely used in carrying systems such as coaches and airplanes, for example, the back of a seat backrest on a senior bus is provided with an independent display screen for passengers to use, because passengers seated in the same seat are different each time, the height and the eyesight are different, the distance between the display screen and the passengers needs to be adjusted to achieve the optimal viewing distance suitable for the user, because the positions of most of the seats are fixed, the optimal viewing distance of the user can be achieved only by adjusting the position of the display screen, in order to achieve the purpose of adjusting the distance between the user and the display screen, chinese patent No. 103398275B discloses a back-to-back type dual lcd telescopic adjusting bracket, wherein one end of a telescopic frame is fixedly connected to a fixed bracket, the other end of the telescopic frame is connected to a mounting plate for mounting a display, and the distance between the display and a user is adjusted by stretching the extension degree of the telescopic frame.

Although the distance between adjustment display screen and the user can be solved to above-mentioned prior art, because its expansion bracket poor stability, especially when this prior art uses on vehicles such as long-distance big bus, when vehicle speed changes or rocks, the display screen rocks all around easily and leads to the display screen to rock, and the user can not clearly watch the content that the display screen shows, with higher speed user eyestrain, harm the eyesight healthy.

Disclosure of Invention

The invention aims to provide a telescopic device for a display screen, which solves the problems that a telescopic frame in the prior art is poor in stability and a display is easy to shake during use.

The invention discloses a basic scheme provided by a telescopic device for a display screen, which comprises the following steps:

the utility model provides a telescoping device for display screen, includes base, mounting panel and telescopic machanism, telescopic machanism includes the expansion bracket that two symmetries set up, and the expansion bracket includes a plurality of pivots and a plurality of support frame, the vertical setting of pivot, adjacent support frame is articulated through the pivot, and articulated between the pivot that two expansion brackets correspond have the dead lever that is used for adjusting distance between the pivot, and expansion bracket one end is articulated with the base, and the one end that the base was kept away from to the expansion bracket is articulated with the mounting panel.

The invention discloses a technical scheme of a telescopic device for a display screen, which is characterized in that:

the display screen is installed on the installation plate, the installation plate is pushed to enable the telescopic frame to stretch and adjust the display screen to a required position, then the length of the fixing rod is adjusted to be equal to the distance between the corresponding rotating shafts, and the fixing rod is sleeved on the corresponding rotating shafts and then locked.

The technical scheme of the telescopic device for the display screen has the beneficial effects that:

one, compare with prior art, the dead lever of this scheme is fixed two expansion brackets's the position relatively who corresponds between the pivot, makes the expansion bracket unable flexible production rock when receiving the impact, improves the stability of display screen.

Further, as the optimization of basic scheme, the support frame includes rectangular shaped plate, both ends be equipped with in the rectangular shaped plate with the first shaft hole of pivot complex, first shaft hole runs through rectangular shaped plate along rectangular shaped plate width direction.

Further, as the optimization of the basic scheme, lightening holes are formed in the rectangular plates.

Further, fixedly connected with on the base with the first support that the expansion bracket corresponds, fixedly connected with on the mounting panel with the second support that the expansion bracket corresponds, first support with all be equipped with on the second support with pivot complex second shaft hole, expansion bracket one end and first support hinge, the expansion bracket other end is articulated with the second support.

Furthermore, the lower extreme of pivot is equipped with spacing shaft shoulder, and the upper end of pivot is equipped with the axle head retaining ring.

Further, the mounting panel includes bottom plate and subplate, the bottom plate with second support fixed connection, the last border department of subplate is equipped with the hinge, hinge one end and subplate fixed connection, the hinge other end and bottom plate fixed connection, the equal a plurality of locating levers of fixedly connected with of both sides terminal surface of bottom plate, the both sides terminal surface of subplate is equipped with the regulation pole, it is articulated with the subplate to adjust pole one end, adjust the pole other end be equipped with locating lever complex positioning hole.

The opening angle between the auxiliary plate and the bottom plate can be realized by sleeving the adjusting rod on different positioning rods, so that the auxiliary plate and the vertical direction have different angles, the angle of the display screen installed on the auxiliary plate can be adjusted in the up-down direction, and the requirements of users with different heights can be met.

Further, the non-Newtonian fluid is prepared from starch and water in a mass ratio of 1: 2-2.5.

Drawings

Fig. 1 is a schematic structural view of a telescopic device for a display screen according to the present invention.

Fig. 2 is a schematic structural view of the telescopic frame.

FIG. 3 is a schematic view of a mounting plate.

Fig. 4 is a schematic structural view of the cylinder.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the oil cylinder comprises a base 1, a first support 11, a bottom plate 21, a second support 210, a positioning rod 211, a hinge 212, a secondary plate 22, an adjusting rod 221, a rotating shaft 31, a support frame 32, a first shaft hole 321, a lightening hole 322, an oil cylinder 33, a front cavity 3301, a rear cavity 3302, a piston 331, a sliding block 332, an accommodating cavity 333, a rear through hole 3331, a slide rail 334, a spring 3341, a front through hole 3342, a first connecting rod 34, a sliding plate 335, an oil discharge hole 3351, an oil passage 336, a transverse channel 337 and a limiting block 338.

A telescopic device for a display screen, as shown in figures 1 and 2, comprises a base 1, mounting panel and telescopic machanism, base 1 can be the wall, relatively fixed's components such as on-vehicle seat backplate or fixed display support, telescopic machanism includes the expansion bracket that two symmetries set up, the expansion bracket includes pivot 31 and a plurality of support frame 32, the vertical setting of pivot 31, the lower extreme of pivot 31 is equipped with spacing shaft shoulder, the upper end of pivot 31 is equipped with the axle head retaining ring, support frame 32 is the rectangular plate, be equipped with lightening hole 322 on the rectangular plate, both ends are equipped with the first axle hole 321 with pivot 31 complex in the rectangular plate, first axle hole 321 runs through the rectangular plate along rectangular plate width direction, adjacent support frame 32 is articulated through pivot 31, it has the dead lever that is used for adjusting pivot 31 distance to articulate between the pivot 31 that two expansion brackets correspond, the first seat 11 of fixedly connected with on the base 1.

As shown in fig. 3, the mounting plate includes a bottom plate 21 and a sub plate 22, a display screen mounting hole is formed in the sub plate 22, a hinge 212 is arranged at the upper edge of the sub plate 22, one end of the hinge 212 is fixedly connected with the sub plate 22, the other end of the hinge 212 is fixedly connected with the bottom plate 21, a plurality of positioning rods 211 are fixedly connected to both side end faces of the bottom plate 21, two side end faces of the sub plate 22 are provided with an adjusting rod 221, one end of the adjusting rod 221 is hinged to the sub plate 22, the other end of the adjusting rod 221 is provided with a positioning through hole matched with the positioning rod 211, a second support 210 is fixedly connected to the bottom plate 21, second shaft holes matched with the rotating shaft 31 are formed in the first support 11 and the second support 210, as shown in fig. 4, one end of the expansion bracket.

As shown in fig. 4 and 5, the fixing rod includes a cylinder, a piston 331 is slidably connected in the cylinder, the piston 331 divides an inner cavity of the cylinder into a front cavity 3301 and a rear cavity 3302, a sliding block 332 is slidably connected in the rear cavity 3302, an accommodating cavity 333 is formed between the sliding block 332 and an end of the cylinder, a slide passage 334 is provided in a side wall of the cylinder, an oil passage 336 passing through the slide passage 334 is provided in a side wall of the cylinder between the sliding block 332 and the piston 331, one end of the oil passage 336 is communicated with the rear cavity 3302, the other end of the oil passage 336 is communicated with the front cavity 3301 through a transverse passage 337 provided in the side wall of the cylinder, a sliding plate 335 is slidably connected in the slide passage 334, an oil discharge hole 3351 corresponding to the oil passage 336 is provided in the sliding plate 335, the sliding plate 335 divides the slide passage 334 into a front chamber and a rear chamber, a front through hole 3342 communicating the front chamber with the transverse passage 337, the containing cavity 333 and the rear chamber are filled with non-Newtonian fluid, and the non-Newtonian fluid is prepared from starch and water according to the mass ratio of 1: 2 to 2.5, the non-Newtonian fluid has a property of increasing viscosity and failing to flow when impacted, when an external force is slowly applied to the non-Newtonian fluid, the non-Newtonian fluid has liquid fluidity, a spring 3341 is arranged in the front chamber, one end of the spring 3341 is fixedly connected with the slide rail 334, the other end of the spring 3341 is fixedly connected with the sliding plate 335, a limiting block 338 is arranged in the rear chamber 3302 and used for preventing the sliding block 332 from crossing the oil channel 336 towards the front chamber 3301, a first connecting rod 34 is arranged on the piston 331, one end of the first connecting rod 34 is sleeved outside the rotating shaft 31 close to the front chamber 3301 and hinged to the rotating shaft 31, the other end of the first connecting rod 34 is fixedly connected with the piston 331, one end of the cylinder close to the rear chamber 3302 is provided with a second connecting rod, one end of the second connecting rod is fixedly connected with the end of the cylinder close to the rear chamber 3302, and the other end.

The working process of the telescopic device for the display screen comprises the following steps:

when the display screen is installed on the sub-plate 22, and the whole device is in a stable state without adjusting the position of the display screen, the elastic force of the spring 3341 on the sliding plate 335 is balanced with the pressure of the non-Newtonian fluid on the spring 3341, at this time, the oil discharge hole 3351 on the sliding plate 335 is staggered with the oil passage 336, the sliding plate 335 blocks and separates the front cavity 3301 from the rear cavity 3302, and at this time, the oil pressure of the front cavity 3301 is equal to that of the rear cavity 3302.

When the distance between the display screen and the user needs to be adjusted, the bottom plate 21 is slowly pushed to contract or extend the telescopic frames, the distance between the corresponding rotating shafts 31 on the two telescopic frames changes, the distance between the corresponding rotating shafts 31 changes to cause the piston 331 to move in the cylinder, when the piston 331 is forced to move slowly towards the direction close to the sliding block 332, the space between the piston 331 and the sliding block 332 decreases, the oil pressure increases to cause the sliding block 332 to move slowly, because the sliding block 332 slowly presses the non-newtonian fluid instead of rapidly pressing the non-newtonian fluid, at this time, the non-newtonian fluid has the same fluidity as a conventional liquid, the slowly pressed non-newtonian fluid in the accommodating cavity 333 enters the rear chamber through the rear through hole 3331, the non-newtonian fluid in the rear chamber presses the sliding plate 335 to move the sliding plate 335 towards the front chamber to cause the oil discharge hole 3351 and the oil passage 336 to be gradually aligned to form an oil, at this time, the oil in the rear cavity 3302 enters the transverse channel 337 through the oil passage and then enters the front cavity 3301, the movement of the piston 331 is accelerated, the position of the display screen can be adjusted quickly, the oil pressure of the front cavity 3301 is equal to that of the rear cavity 3302 after the adjustment is finished, the piston 331 is fixed, the pressure of the rear cavity 3302 on the sliding block 332 is reduced, the sliding plate 335 moves slowly toward the rear cavity under the elastic force of the spring 3341 to squeeze the non-newtonian fluid, the non-newtonian fluid returns to the accommodating cavity 333 through the rear through hole 3331, and as the sliding plate 335 moves toward the rear cavity, the oil discharge hole 3351 on the sliding plate 335 is staggered with the oil passage 336 to block and separate the oil passage 336, so that the front cavity 3301 is separated from the rear cavity 3302.

When the piston 331 is forced to move slowly away from the sliding block 332, the oil pressure in the rear chamber 3302 decreases, the oil pressure in the front chamber 3301 increases, the increased oil pressure causes the sliding plate 335 to move slowly toward the rear chamber to press the non-newtonian fluid, the non-newtonian fluid enters the receiving chamber 333 through the rear through hole 3331 to press the sliding block 332, the sliding block 332 moves toward the front chamber 3301 under the pressing of the non-newtonian fluid due to the decrease in pressure in the rear chamber 3302, the oil passage 336 connects the front chamber 3301 and the rear chamber 3302 when the sliding plate 335 moves toward the rear chamber to pass over the oil passage 336, the spring 3341 is stretched to generate a pulling force, the position of the display screen can be adjusted quickly by the piston 331 moving quickly in the cylinder, the oil pressures in the front chamber 3301 and the rear chamber 3302 are equal after the adjustment is finished, the oil passage is blocked by the sliding plate 335 moving slowly toward the front chamber 336 under the pulling force of the spring 3341, such that the front chamber 3301 is blocked from the rear chamber 3302.

When the whole telescopic device for the display screen is impacted by external force which is rapid and short in duration, such as shaking, force transmitted to the piston 331 enables the piston 331 to move rapidly, and further non-Newtonian fluid is extruded suddenly, the non-Newtonian fluid shows that viscosity is increased suddenly and has the characteristic of solid rigidity and cannot flow so that the sliding plate 335 cannot move, the oil passage 336 is cut off so that the piston 331 cannot move any more, and the piston 331 cannot move and finally the distance between the corresponding rotating shafts 31 cannot be changed, so that the telescopic frame cannot stretch and keep stable and not shake.

When the display screen needs to be adjusted to be suitable for the viewing angle of a user, the adjusting rod 221 is sleeved on different positioning rods 211 to realize the opening angle between the auxiliary plate 22 and the bottom plate 21, so that the auxiliary plate 22 and the vertical direction have different angles, and the angle of the display screen arranged on the auxiliary plate 22 can be adjusted in the up-down direction to meet the requirements of users with different heights.

One, compare with prior art, the dead lever of this scheme is fixed two expansion brackets's the position relative fixation who corresponds between pivot 31, makes the expansion bracket unable flexible production rock that lasts when receiving the impact, but improves the stability of display screen.

Secondly, this scheme has utilized non-Newtonian fluid to increase the unable performance that flows and have approximate solid characteristic in the moment that receives the impact in the viscosity, makes when receiving the impact sliding plate 335 keep motionless and then preceding cavity 3301 and back cavity 3302 cut off not to lead to, further makes piston 331 fixed can not remove lead to the fixed unchangeable distance between the pivot 31 that corresponds for the expansion bracket is fixed motionless, effectively prevents to install the display screen on subplate 22 and rocks.

Thirdly, when the distance between the display screen and the user needs to be adjusted, the telescopic frame can be quickly contracted or stretched to quickly adjust the distance between the display screen and the user only by slowly and continuously pushing the mounting plate to enable the oil discharge hole 3351 to be communicated with the oil duct 336.

Fourthly, compare with prior art, this scheme has effectively prevents to rock the advantage that can adjust at any time again.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a telescoping device for display screen, includes base, mounting panel and telescopic machanism, its characterized in that: telescopic machanism includes the expansion bracket that two symmetries set up, and the expansion bracket includes a plurality of pivots and a plurality of support frame, the vertical setting of pivot, adjacent support frame is articulated through the pivot, and it has the dead lever that is used for adjusting distance between the pivot to articulate between the pivot that two expansion brackets correspond, and expansion bracket one end is articulated with the base, and the one end that the base was kept away from to the expansion bracket is articulated with the mounting panel.

2. The telescopic device for display screen according to claim 1, characterized in that: the fixed rod comprises a cylinder body, a piston is connected in the cylinder body in a sliding manner, the piston divides an inner cavity of the cylinder body into a front cavity and a rear cavity, a sliding block is connected in the rear cavity in a sliding manner, a containing cavity is formed between the sliding block and the end part of the cylinder body, a slide way is arranged in the side wall of the cylinder body, an oil duct which penetrates through the slide way is arranged in the side wall of the cylinder body, one end of the oil duct is communicated with the rear cavity, the other end of the oil duct is communicated with the front cavity through a transverse channel arranged in the side wall of the cylinder body, a sliding plate is connected in the slide way in a sliding manner, an oil discharge hole which corresponds to the oil duct is arranged on the sliding plate, the sliding plate divides the slide way into a front cavity and a rear cavity, a front through hole which is communicated with the, the non-Newtonian fluid has the characteristic that viscosity is increased and the non-Newtonian fluid cannot flow when being impacted, a spring is arranged in the front chamber, one end of the spring is fixedly connected with the slide way, the other end of the spring is fixedly connected with the sliding plate, a limiting block for preventing the sliding block from crossing the oil duct in the direction of the front chamber is arranged in the rear chamber, a first connecting rod hinged with a rotating shaft close to the front chamber is arranged on the piston, and a second connecting rod hinged with the rotating shaft close to the rear chamber is arranged at the other end of.

3. The telescopic device for display screen according to claim 2, characterized in that: the support frame includes rectangular shaped plate, both ends be equipped with in the rectangular shaped plate with pivot complex first shaft hole, first shaft hole runs through rectangular shaped plate along rectangular shaped plate width direction.

4. The telescopic device for display screen according to claim 3, characterized in that: and lightening holes are formed in the rectangular plates.

5. The telescopic device for display screen according to claim 1, characterized in that: the base is fixedly connected with a first support, the mounting plate is fixedly connected with a second support, the first support and the second support are respectively provided with a second shaft hole matched with the rotating shaft, one end of the telescopic frame is hinged with the first support, and the other end of the telescopic frame is hinged with the second support.

6. The telescopic device for display screen according to claim 1, characterized in that: the lower extreme of pivot is equipped with spacing shaft shoulder, and the upper end of pivot is equipped with the axle head retaining ring.

7. The telescopic device for display screen according to claim 5, wherein: the mounting panel includes bottom plate and subplate, the bottom plate with second support fixed connection, the last border department of subplate is equipped with the hinge, hinge one end and subplate fixed connection, the hinge other end and bottom plate fixed connection, the equal a plurality of locating levers of fixedly connected with of both sides terminal surface of bottom plate, the both sides terminal surface of subplate is equipped with the regulation pole, it is articulated with the subplate to adjust pole one end, adjust the pole other end be equipped with locating lever complex positioning hole.

8. The telescopic device for display screen according to claim 1, characterized in that: the non-Newtonian fluid is prepared from starch and water in a mass ratio of 1: 2-2.5.