CN2566418Y - Connecting rod type lift device - Google Patents

Abstract

The utility model relates to a connecting rod type lift device, which comprises a base, an engagement seat, a first pivot unit, a first connecting rod unit, an elastic unit, a second connecting rod unit, and a second pivot unit. A first and a second pivot members are respectively pivoted on both ends of the first and the second connecting rod units to form a group of four connecting rod mechanism, wherein, the first pivot unit is orderly fixed on the engagement seat and the base, and can be positioned on a supporting plane; the second pivot unit is pivoted with an object, such as a liquid crystal display, and meanwhile, the middle sections of the first and the second connecting rod units are connected to the elastic unit for regulating the position of the liquid crystal screen in labor saving.

Description

Lift link means

(1) Technical Field The present invention relates to a link type lifting device, particularly to an apparatus for the lifting rod elastic unit disposed in the middle of the link and used for a liquid crystal display.

(2) Background art 1, the conventional link-type liquid crystal display supporting device 9 is provided with a bracket 91 on a chassis 90, a first fixed pivot 92 on the support plate 91. Then by means of two pivots 93, respectively sleeved two torsion spring 94, one end 95 of the two linkage 96 are pivotally connected to the first pivot plate 92. The other end of the linkage 95 of two 97 are pivotally connected to a second pivot plate 98, the second pivot plate 98 pivoted to a bracket 99 and then, the fixing frame 99 for fixing a liquid crystal display (not shown) .

Pull the switch 99 by means of the holder, to adjust the pitch angle of the liquid crystal display, and pressed by means of linkage 95 or elevation, an adjustable liquid crystal display front, rear, upper and lower positions.

Referring to Figure 1, because the weight W of the liquid crystal display 95 of the set point of a link 97, the distance D and the fulcrum 96 (the other end 95 of linkage 96) between the relatively large, i.e. relatively large moment arm D, Thus W × D torque generated is quite large. The elastic to support the weight of the liquid crystal display provided by the torsion spring 94 restoring torque M also need relatively large, and therefore the torsion spring 94 must have a larger diameter or a larger number of turns in order to withstand. However, the torsion spring and the number of large diameter a plurality of turns not only the material cost increases, and the narrow end of the linkage space, resulting in a large number of turns of wire diameter and more difficult to assemble the torsion spring.

Further, the spring mounted to the linkage configuration, only the torsion spring, it is difficult to compression or tension coil spring is mounted, a low degree of design freedom.

Further, the torsion spring 94 is sleeved required as a support pivot 93, to prevent distortion of the torsion spring causes the loss of spring function. However, the pivot 93 through the torsion spring 94 is provided between the two has caused the friction member is used, the light generating abnormal sound harsh, severe stress is limited to that portion of the torsion spring sections, the overall length can not be uniformly distributed, resulting in the deformation zone exceeds the range of elastic deformation and damage.

Further, with the pivot support assembly not only cause inconvenience, but also inviting cost material.

(3) SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a link-type lifting device, which is easy to assemble elastic unit.

Another object of the present invention is to provide a lift link means, using an elastic type element having a high degree of freedom of choice.

A further object of the present invention is to provide a link-type lifting device, which does not produce an elastic friction means abnormal noise.

The present invention still further object is to provide a link-type lifting device, which external force may be uniformly distributed in the whole elastic unit, without causing local damage.

Another object of the present invention is to provide a lift link means, assembling and low material costs.

The link-type lifting device according to the present invention with respect to a supporting surface connected to a display comprising: a first link unit, a second link unit, a first pivot means, a second pivot unit, and an elastic unit; the first link unit, having two parallel first lever member; a second link unit and the first link unit vertically adjacently, the second link unit has a second parallel two body; a first pivot means, and said web having a web extending from opposite ends and a pair of opposed first pivot plate, which connecting plate is connected to the support surface, the first and second rod each end of the rod member pivotally connected to the corresponding first pivot plate; second pivoting element has two opposing second pivot plate, respectively corresponding to the second lever pivotally connected to the other end of the first rod, the other end, and said display screen; an elastic means connected to the first link between the unit and the middle of the second link unit; when the screen moves relative to the support surface lowered position, the elastic unit storage elastic the potential energy for the auxiliary support relative to the display screen Rising energy needed.

To further illustrate the object of the present invention, the structural characteristics and effects will be described in conjunction with the present invention in detail with the accompanying drawings.

(4) FIG. 1 is a perspective view of a conventional rod-type support means;

FIG 2 is a conventional apparatus and the apparatus of the present invention in a schematic view of the first, the second position when the link stress analysis; according to the present invention Figure 3 is an exploded perspective view of a first link type preferred embodiment of the lifting device; FIG. 4 is present invention with a side view of a combination coil spring elastic unit, wherein the base and the adapter member is not shown, the solid line represents a first raised position, the dotted line represents a second position lowered; FIG. 5 is a front view of FIG. 4; FIG. 6 is a side view of the present invention having a combination of a torsion spring of the elastic unit, wherein the base is not shown; FIG. 7 is a front view of FIG. 6; FIG. 8 is a torsion spring according to the present invention the elastic means second preferred embodiment; FIG. 9 is a side view of the present invention in combination with an elastic torsion spring unit of the third preferred embodiment, wherein the base is not shown; FIG. 10 is a front view of FIG. 9; FIG. 11 of the present invention is a torsion spring having an elastic unit of the fourth preferred side view of a combination embodiment, wherein the base is not shown; FIG. 12 is a front view of FIG. 11; FIG. 13 of the present invention is a fifth preferred embodiment having an elastic torsion spring unit; FIG. 14 is a tool according to the present invention An elastic torsion spring unit sixth preferred embodiment; FIG. 15 is a partial perspective view of the present invention in combination with the torsion spring of FIG seventh preferred embodiment of the elastic unit; FIG. 16 of the present invention is a tension coil spring having an elastic a side assembled view of an eighth preferred embodiment of the unit; FIG. 17 is a partial elevational view of FIG. 16; FIG. 16 and FIG. 18 is a schematic view of a first, a second position in.

(5) DETAILED DESCRIPTION Referring to Figure 3, the present invention is linked lift a preferred apparatus embodiment 100 comprises: a base 1, a seat adapter 2, a first pivot means 3, a first link unit 4, a second link unit 5, a second pivot means 6, and a connecting element 65.

The base 1 has a flat U-shaped, in the four U-shaped perforations 11 having a bottom side, the base 1 is not limited to be U-shaped in other shapes.

2 adapter housing having a bottom wall 21, a bottom wall from a front side wall 21 extending vertically contiguous sequence end 22 and a top wall 23, extending obliquely from the other end to the top wall 23 aligned with the free end of the bottom wall 21 of the upper and lower an inclined wall 24, side walls 22 and perpendicular to the front seat and the closure adapter 2 on two opposite sides of the side walls 25 on both sides. Wherein the bottom wall 21, a top wall 23, and an inclined wall 24 has four holes 26 each.

First pivoting means 3 has a connecting plate 31, two first pivot from a longitudinal web 31, respectively, extending in the vertical direction with both ends of the contact plate 32 and connecting plate 31 from a lower end of the fixing plate 33 extending obliquely. The connecting plate 31, a first pivot plate 32, and the fixed plate 33 each having four through-holes 34.

A first link unit 4 is substantially H-shaped having two parallel first lever 41, a first rib 42 connecting the two first middle rod 41, 42 from the first rib to a first upper plate member 43 extending vertically, and a first column from the first rib 42 44 extending downwardly. The two first rod 41, the lower ends 40, 45 each having a through-hole.

The second link unit 5 is similar to the first link unit 4 also has two second rod member 51, a second rib 52, a second sheet 53 and a second cylinder 54, and the second rod 51, the each end 55, 56 has a through hole. The only difference is that the second sheet 53 from the lower end toward the second rib 52 extending toward the first sheet 43, and the second column 54 extends upwardly from the second sheet 53.

The second pivot means 6 comprises two triangular second pivot connection plate 62, and the two pivotally connected to a second pivot plate 62, adapter member 65. Each of the second pivot plate 62 to the three corners of each pivot hole 61 has three; and the engaging member 65 has a rectangular fixation plate 651 and fixed plate 651 from the two opposite ends of the lugs each extending perpendicular with 652. Each lug 652 each having a coupling hole 653, and a rectangular plate 651 are fixed to the four corners having a fixing hole 654.

The following detailed description of the present invention during the assembly rod lifting device: refer to FIG. 4, 5, respectively, to four bolts 13 through four perforations 11 of the base 1, the base 1 is screwed to the adapter base 2 the bottom wall 21. Followed by eight bolts 38 through the first pivot means 31 eight web 3 through hole 33 and the fixing plate 34, the first pivot is fixed to the adapter unit 3 is inclined wall 24 of the base 2 and the top wall 23. Four through holes 34, and the first and second link unit 39 again with four screws through the first two pivoting unit 3 of the first pivot plate 32 of the first and second bodies 41, 51 of rods 4,5 the lower end of the through-holes 40, 55, respectively, and the nut 37 screwed to four.

4 of the first sheet of a first column member 43 and the second link unit 44, for example, then both ends of a coil spring unit 49 are elastically engaged with the first cover sheet 5 of the second link unit 53 is 54 two posts.

Then three bolts 63 are passed through the second three pivot means pivoting a second pivot plate 6 of the contact hole 61, and a first, upper end side of the through-holes 41, 51 of the two bodies 45, 56 and engagement member 65 side of the coupling hole 652 of the lug 653, and are screwed three nuts 64; similarly, in another three bolt 63 with the nut 64 and the other three, and the other of the second pivot plate 62 and the first, 65 on the other side 41 and 51 the upper end of the other side of the two lugs 652 and adapter member bolted together, so that the first and second link unit 5 and the first and second pivot means are combined into a group of four 3,6 -link mechanism, wherein the second link unit 5 is located below the first link unit 4 adjacent side by side. Finally, the engagement member fixed plate 65165 may be a fixed object (e.g. a liquid crystal display, not shown), so that the object can be easily adjusted with respect to another object placed in a root base support surface (not shown) upper, lower, front, rear position and tilt angle.

Next, the operation state of the present invention linked lift apparatus: a solid line in FIG. 2, 4 represents a first raised position of the present device, a first case, two longer the distance L between the bodies 43, 53, the elastic unit 49 is not deformed or lesser amount of deformation. And the dotted line represents a second lowered position, in which case the first and second sheet between the distance l 43,53 short, the amount of deformation of the elastic unit 49 is large. When wishing LCD object from a first pressure position to a second position, due to the elastic deformation section 49 is small, a small elastic restoring force, and there is co-gravity W of the object itself, can be so easily under pressure.

Conversely, when the LCD object wishing jumping from the second position in a first position, due to the deformation amount of the elastic unit 49, the elastic restoring force, a large number of elastic potential energy stored in the elastic unit 49 may be released help out the object of increased effort to achieve the purpose.

As shown, the elastic means 49 may also be a 6,7 ​​shift to the coil torsion spring resilient means 49a, which is omitted first and second posts 44 and 54, the other two lines having a hole in the second panel 5357 with in the two free torsion spring fixed end 48 of the elastic unit 49a, and the first sheet member 43 abuts against the elastic element 49a of the torsion spring end 47 arc. Further, two lines 6 and 7 having a hole 57 configuration, may be secured to the torsion spring shown in FIG. 8 elastic unit 49b.

Another example is shown in FIG. 9, 10, make the first and second sheet 43, 53 are holes 57 having two lines, for the two torsion spring is fixed to the elastic means 49c, 49d. This configuration and having a four-wire hole 57 may also be a solid elastomeric torsion spring unit 49e 13 pick FIG.

Further, as shown in FIG. 14 and 15, it can also be omitted in FIG first and second posts 44 and 54 and the first and second sheet 43, 53 in FIG. 3, the other two in the middle than the first rod 41 and above the two middle second rod member 51 each having a hooking hole 58 than at the bottom. A free end of the elastic unit 49k of the hook 48 are fixed to the first, two hooking holes 58 of the body of the same side; the same and then the other free end 49k of the elastic unit 48 are fixed to the first hook, the other two bodies hooking hole 58 side.

Further, as shown in FIG. 16, 17, in addition to the present invention are omitted in FIG. 3 the first and second posts 44, 54 and first and second outer sheet 43, 53 can also be a torsion spring or a compression coil replace the spring tension coil spring elastic unit 49n, and an end of the tension coil spring elastic unit 49n is fixed to the lower edge of the hook 42 of the first rib, the hook and the other end fixed to the edge of the second rib 52. Or the width of the first rib 42 is further reduced to the first rod located in a middle section thereof than at the lower horizontal rod (not shown), and the width of the second rib 52 is reduced to a second rod positioned at the upper middle section thereof than a cross- bar (not shown) for fixing hook stretching across the coil spring elastic unit 49n.

In the embodiment of FIG. 16, 17, when a first position is located higher, the first and second link units 4 and 5 is fixed at both ends of the tension coil spring moment of the elastic unit 49n from H, than in the less a second lower position when the first and second link units 4 and 5 is fixed at both ends of the tension coil spring torque from the elastic unit 49n h small. Thus, when the pressing force-link lifting device 100, must overcome the elastic deformation of the elastic unit 49n tensile restoring force, but fortunately this case are liquid crystal display of the object W by weight promoter, it can still be easily pressed. Conversely, when wishing to lift the link 100 from the second position raised above the first position, the elastic unit 49n elastic restoring force that helps overcome the downward weight of the LCD object W, so that effort may be lifted up.

Further, the first pivoting means 3 may be directly fixed to the supporting surface of the other root object, without need to rely adapter base 2 and the base 1. Or the first pivoting means 3 is fixed to the adapter 2 is directly fixed to the other after the root object support base surface, the base 1 without the need to rely on.

Further, the seat base 1 and the adapter 2 may be welded substituted bolted.

And two second pivot plate 62 do not need to be co-engagement member 65, the pivoted directly on the LCD screen object.

Each of the above embodiments, can be in a row in the lever-type lifting device 100 is provided having a plurality of elastic units 49,49a, .......

It will be specifically described advantages and technical effects of the invention linked lift apparatus of the present.

2, the present invention due to the elastic unit 49 is provided in the middle of the first and second link units 4 and 5, rather than 40, 55 provided at one end thereof, the elastic restoring action of the resilient means 49 force f point and the base point (the first, two end of the through-hole member) 40, 55 between a large arm surviving d, torque (f × d) and the product of the two produced 95 conventionally provided at one end of the connecting rod 96 the torque M torsion spring 94 provided, to hold the root of the same weight of a liquid crystal display object W, the elastic unit 49 according to the present invention is required to provide an elastic restoring force f can be made small, i.e. the present invention the elastic unit 49 diameter or number of turns may be small, and therefore can be easily assembled and reduced material costs.

The present invention because the elastic unit 49 is small and does not require a conventional pivot 93, while the elastic unit 49 is disposed in the middle instead of 4,5-terminus link unit larger space, and therefore easy to assemble, thereby reducing material and assembly cost, and no abnormal noise friction.

Further, because no conventional friction blocking of the pivot 93, so that deformation of the elastic unit 49 may be uniformly distributed in the internal stress of the elastic unit 49 overall, without local destruction.

In addition, the space in the middle of the link units 4 and 5 is large, the configuration allowing the elastic unit fixing 49 slightly changes, alternative uses torsion compression coil, tension coil or other resilient means, design freedom.

Of course, those skilled in the art should appreciate that the above embodiments are merely to illustrate the present invention, and are not used as of the new defining practical, as long as the present invention the true spirit scope of the above the range of variation of the described embodiment, modifications of the present invention will fall within the claims.

Claims (8)

A link-type lifting device, the lifting means having one end connected a display screen, and the other end connected to a supporting surface, which allows a display screen when receiving external force relative to the support surface of the lifting, the lifting means comprises a first link unit, a second link unit, a first pivot means, a second pivot means, a resilient element, wherein: the first link unit, having two parallel first rod; the first two link unit is located below the first link unit adjacently, the second link unit has a second shaft parallel to the two; the first pivoting means, having a web and a web extending from the opposite ends and a pair of opposed first pivot plate, which connecting plate is connected to the support surface, the lower end of each pivotally first rod and the second rod is connected to the corresponding first pivot plate; the second pivot contact unit having two opposing second pivot plate, pivotally connected to an upper end corresponding to an upper end of the first rod and the second rod and the fixed display screen respectively; the elastic unit, connected to the first link unit, and between the middle of the second link unit.

2. The rod lift apparatus according to claim 1, wherein: the first link unit further has a first rib connecting the two first rod member, and the second link unit further has a connection to the a second rib of the two second lever member, and the elastic unit connected to the first rib and said second rib.

3. The link-type lifting apparatus according to claim 1, wherein: the first link unit further has a first rib connecting the two first lever member and a first rib extending from the first sheet; the second link unit further has a second rib connected to the two second rod member, and a second sheet from the second edge extending rib; elastic unit which is connected to the first plate member and the second sheet.

4. The link-type lifting device according to claim 3, wherein: the first link unit further includes a first column from the first sheet projecting, and the second link unit further a second cylinder having the second sheet member from protruding, for fixing the elastic unit.

5. The lift link 1 or claim 2 or claim 3, wherein: the lifting means further having a base connected to the first adapter pivoting unit to the lifting device fixed to the support surface.

6. The link-type lifting apparatus according to claim 5, characterized in that: the lifting means further having a base connected to the base of the adapter to the lifting device is placed on the supporting surface.

Connected to the second pivoting means further has two second pivot plate connected to the first and second link elements, and: 7. The lift link 1 or claim 2 or claim 3, characterized in that an engagement member of the second pivot plate and the display screen.

8. linked lift apparatus according to claim 1, characterized in that: the two first rod and the middle than at the upper middle of the two second rod hooking member each having a hole at a more downward, a two elastic unit hook fixed to the free ends of the first hooking holes, two on the same side of the body; ends, respectively, of another elastic unit hook member fixed to the other side of the hooking hole of the first two.