CN202746889U

CN202746889U - Screen lifting device

Info

Publication number: CN202746889U
Application number: CN 201220105509
Authority: CN
Inventors: 黄献辉
Original assignee: Syncmold Enterprise Corp
Current assignee: Syncmold Enterprise Corp
Priority date: 2012-03-20
Filing date: 2012-03-20
Publication date: 2013-02-20
Anticipated expiration: 2022-03-20

Abstract

The utility model provides a screen lifting device which is placed on a working surface. The screen lifting device comprises a seat body, a sliding support frame, a plurality of springs and a plurality of linkage parts corresponding to the springs, wherein the seat body is arranged on the working surface; the sliding support frame is arranged on the seat body in a sliding manner; one end of each spring is fixed on the seat body; each linkage part is respectively and selectively connected with the sliding support frame and is connected with the spring corresponding to the linkage part to form a linkage state; and under the linkage state, when the sliding support frame slides relative to the seat body, the linkage parts linked with the sliding support frame slide together, so that the corresponding springs deform to generate a total restoring force, and the sliding support frame can be stopped between a first position and a second position at any moment. The screen lifting device has the beneficial effect that through the fit between a linkage unit and a sliding unit, the springs can be prevented from generating elastic fatigue in the warehousing process or the conveying process or the effect that the screen lifting device is applicable to various screens with different specifications and sizes is realized.

Description

Screen elevator apparatus

Technical field

The utility model relates to a kind of lowering or hoisting gear, and is particularly related to a kind of screen elevator apparatus.

Background technique

Itself can't firmly stand general screen voluntarily, must by establishing a support frame device in screen rear side group, could firmly stand on the desktop.And a kind of lowering or hoisting gear of adjustable height of screen position that is is arranged in the above-mentioned support frame device, such as TaiWan, China utility model patent M311200(application number: 095218265) record.

Yet, as everyone knows, the lowering or hoisting gear of same specification can only correspondence be used in the screen of single specification (being single specification weight), thereby so that manufacturer must produce the lowering or hoisting gear of multiple different specification size with the use of supply screen, but therefore makes manufacture cost too high.

Moreover known lowering or hoisting gear is the stock or transport in the process, and it is minimum to need height with lowering or hoisting gear transfer to, to dwindle the required volume that takies of lowering or hoisting gear.But this operation makes the spring in the lowering or hoisting gear maintain stressed state, and then easily causes the thing of elastic fatique to produce.

The model utility content

The utility model provides a kind of screen elevator apparatus, and it is the stock or transport and can avoid spring to produce elastic fatique in the process, and screen elevator apparatus is applicable to the screen of multiple different specification size.

The utility model provides a kind of screen elevator apparatus, is used for being placed on the working surface, and this screen elevator apparatus comprises: a pedestal is arranged on this working surface; One sliding support can be arranged at this pedestal slidably; A plurality of springs, an end of each spring is fixed in this pedestal; And to a plurality of coupling components that should a plurality of springs, each coupling component can independently selectively connect this sliding support respectively and be connected in its corresponding spring, form an interlock state, wherein, under this interlock state, when relative this pedestal of this sliding support slided, interlock together slided in the described coupling component of this sliding support, this sliding support make the camber of spring of described correspondence produce a total restoring force, so that can stop between a primary importance and the second place at any time.

Preferably, at least one of them interlock of these a plurality of coupling components is in this sliding support.

Preferably, this pedestal has a fixed support and an interdiction piece, and this sliding support can be arranged at this fixed support slidably, and this interdiction piece is fixed on this fixed support, and each coupling component is limited in this interdiction piece.

Preferably, these a plurality of springs are further defined to fixed force spring, and each fixed force spring is formed with an elastic part and an end, and the elastic part of each fixed force spring is connected to its corresponding coupling component, and this pedestal is fixed in the end of each fixed force spring.

Preferably, each coupling component has a traction piece, and each traction piece is formed with a groove, and the elastic part of each fixed force spring is located in its corresponding coupling component groove.

Preferably, each coupling component be positioned at the fixed force spring of its butt and this interdiction piece between, each coupling component forms a positioning hole, this interdiction piece is provided with a plurality of locating columns that are used for being arranged in these a plurality of positioning holes.

Preferably, these a plurality of springs are further defined to extension spring, the hook that each extension spring is formed with a pars contractilis and is extended respectively by these pars contractilis two ends, and two hooks of each extension spring are positioned respectively its corresponding coupling component and this interdiction piece.

Preferably, this interdiction piece is formed with a plurality of support arms, and each coupling component has a traction piece, and each traction piece is formed with a groove, and two hooks of each extension spring are positioned respectively its corresponding coupling component groove and the support arm of this interdiction piece.

Preferably, this fixed support is formed with a plurality of microscler guide holes, the long axis direction of these a plurality of guide holes is parallel to respectively the draw direction of these a plurality of extension springs, each traction piece is provided with a connection piece, and the connection piece of these a plurality of traction pieces and collocation thereof can be located at this fixed support movably along these a plurality of guide holes respectively.

Preferably, interlock respectively has the force-guided stem of this sliding support of connection in the coupling component of this sliding support.

In sum, screen elevator apparatus provided by the utility model, whether it is by cooperating between linkage unit and sliding unit, to reach the stock or to transport the effect of avoiding spring to produce elastic fatique in the process or being applicable to multiple different specification size screen.

Description of drawings

Fig. 1 is the solid combination schematic representation that the utility model screen elevator apparatus embodiment one is not provided with force-guided stem;

Fig. 2 is the perspective exploded view that the utility model screen elevator apparatus embodiment one is not provided with force-guided stem;

Fig. 3 is the three-dimensional cross-sectional schematic that the utility model screen elevator apparatus embodiment one is not provided with force-guided stem;

Fig. 4 is that the utility model screen elevator apparatus embodiment one is provided with the solid combination schematic representation that force-guided stem and sliding unit are positioned at the extreme higher position;

Fig. 5 is that the utility model screen elevator apparatus embodiment one is provided with the three-dimensional cross-sectional schematic that force-guided stem and sliding unit are positioned at the extreme higher position;

Fig. 5 A is the local enlarged diagram of Fig. 5;

Fig. 6 is that the utility model screen elevator apparatus embodiment one is provided with the solid combination schematic representation that force-guided stem and sliding unit are positioned at extreme lower position;

Fig. 7 is that the utility model screen elevator apparatus embodiment one is provided with the three-dimensional cross-sectional schematic that force-guided stem and sliding unit are positioned at extreme lower position;

Fig. 8 is the solid combination schematic representation that the utility model screen elevator apparatus embodiment two is not provided with force-guided stem;

Fig. 9 is the perspective exploded view that the utility model screen elevator apparatus embodiment two is not provided with force-guided stem;

Figure 10 is the three-dimensional cross-sectional schematic that the utility model screen elevator apparatus embodiment two is not provided with force-guided stem;

Figure 11 is that the utility model screen elevator apparatus embodiment two is provided with the solid combination schematic representation that force-guided stem and sliding unit are positioned at the extreme higher position;

Figure 12 is that the utility model screen elevator apparatus embodiment two is provided with the three-dimensional cross-sectional schematic that force-guided stem and sliding unit are positioned at the extreme higher position;

Figure 13 is that the utility model screen elevator apparatus embodiment two is provided with the solid combination schematic representation that force-guided stem and sliding unit are positioned at extreme lower position; And

Figure 14 is that the utility model screen elevator apparatus embodiment two is provided with the three-dimensional cross-sectional schematic that force-guided stem and sliding unit are positioned at extreme lower position.

[primary component description of reference numerals]

1 pedestal

11 base plates

12 fixed supports

121 mainboards

1211 perforation

1212 guide holes

122 side plates

123 containing spaces

13 slide rails

14 interdiction pieces

141 substrates

1411 perforation

142 stop catch plates

1421 perforation

143 support arms

15 locating columns

2 sliding units

21 sliding supports

211 mainboards

2111 perforation

212 side plates

22 slide blocks

23 separators

231 fixed plates

2311 perforation

232 demarcation strips

3 linkage units

31 springs

311 fixed force springs

3111 elastic part

3112 ends

3113 perforation

312 extension springs

3121 pars contractilis

3122 hooks

32 coupling components

32a traction piece

321 U-groove bevels

322 positioning holes

323 grooves

324 perforations

325 blind holes

326 path sections

327 large footpath sections

328 bumps

The 32b force-guided stem

33 connection pieces

331 perforations

332 positioning plates

333 projections

4 working surfaces (desktop)

The Z first direction

The Y second direction

The X third direction

Embodiment

In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended accompanying drawing only provide with reference to and the explanation usefulness, the utility model is limited.

Embodiment one

See also Fig. 1 to Fig. 3, present embodiment provides a kind of screen elevator apparatus, be used for being placed on a working surface 4(as: desktop).Above-mentioned screen elevator apparatus comprises a pedestal 1, a sliding unit 2 and three linkage units 3.

Wherein, each linkage unit 3 must cooperatively interact to form an interlock state with sliding unit 2; Perhaps, each linkage unit 3 must independently not link to each other to form a separated state separately with sliding unit 2.In other words, three linkage units 3 can all be in interlock state or separated state; Perhaps, part linkage unit 3 is in the interlock state, and all the other linkage units 3 are in separated state.

Moreover above-mentioned sliding unit 2 can be perpendicular to working surface 4 and direction up along a first direction Z(with respect to pedestal 1) slide, with between a primary importance and a second place.And the described primary importance of present embodiment is the extreme higher position of sliding unit 2 opposite working 4, and the second place is the extreme lower position of sliding unit 2 opposite working 4.

Following elder generation forms separated states with regard to each linkage unit 3 and sliding unit 2, and the situation that sliding unit 2 is in the extreme higher position is carried out the explanation of interelement annexation.

Described pedestal 1 has a base plate 11, a fixed support 12, two slide rails 13, an interdiction piece 14 and three pairs of locating columns 15.Above-mentioned base plate 11 is arranged on the working surface 4 and is rounded, but not as limit.And above-mentioned fixed support 12 is formed with a mainboard 121 and directly bend the biside plate 122 of extension from mainboard 121 opposite end marginal lappets, described mainboard 121 all roughly is rectangle with biside plate 122, and the mainboard 121 of fixed support 12 surrounds formation one containing space 123 with biside plate 122.

Wherein, the major axis upward direction of biside plate 122 is first direction Z.Moreover, with simultaneously perpendicular to mainboard 121 and first direction Z and in Fig. 2 the direction towards the right side be defined as a second direction Y, and will be simultaneously perpendicular to first direction Z and second direction Y and in Fig. 2 the direction towards a left side be defined as a third direction X.But when practical application, first direction Z, second direction Y and third direction X also can change according to artificer's demand, need not be defined as mutually vertical.

The top area of described mainboard 121 is formed with three perforation 1211, and mainboard 121 is fixed on the base plate 11 with biside plate 122.Described two slide rails 13 all are strip and the parallel first direction Z of its long axis direction, and two slide rails 13 are individually fixed on above-mentioned biside plate 122 surface toward each other.

And the cross section of described interdiction piece 14 roughly is the L shape and be arranged in containing space 123, and interdiction piece 14 is formed with a substrate 141 and vertically bends a stop catch plate 142 of extension from aforesaid substrate 141 ora terminalis.

Wherein, the parallel third direction X with the long axis direction of stop catch plate 142 of described substrate 141.Aforesaid substrate 141 is formed with three perforation 1411, and above-mentioned stop catch plate 142 is formed with three pairs of perforation 1421.

Moreover the perforation 1211 that described substrate 141 passes its perforation 1411 and fixed support 12 by the screw (not shown) makes interdiction piece 14 be fixed in mainboard 121 internal surfaces of fixed support 12.

Described three pairs of locating columns, 15 parallel first direction Z pass respectively three couples perforation 1421 of above-mentioned stop catch plate 142 and are fixed in stop catch plate 142, and the position that above-mentioned locating column 15 is piercing in stop catch plate 142 is positioned at stop catch plate 142 away from a side of substrate 141.

Described sliding unit 2 has a sliding support 21, two slide blocks 22 and a separator 23.Wherein, above-mentioned sliding support 21 is formed with a mainboard that roughly is rectangle 211 and directly bends the biside plate 212 of extension from mainboard 211 opposite end marginal lappets.The parallel described first direction Z of the long axis direction of described mainboard 211 and biside plate 212, and the bottom section of mainboard 211 is formed with three perforation 2111.

Moreover, described sliding support 21 can be installed for the screen (not shown), do not limit and relevant screen is installed on the mode of sliding support 21, for example: screen can directly be installed on sliding support 21 or by other member (not shown) to be installed on sliding support 21.

Above-mentioned two slide blocks 22 are strip and the parallel first direction Z of its long axis direction, and described two slide blocks 22 are individually fixed on above-mentioned biside plate 212 surface away from each other.

And described separator 23 is arranged in mainboard 211 and biside plate 212 space of defining that surrounds of sliding support 21, and separator 23 is formed with a fixed plate 231 and strictly be the opposite direction of parallel second direction Y in fact from above-mentioned fixed plate 231 1 surperficial parallel second direction Y() two demarcation strips 232 that extend to form.

Wherein, above-mentioned fixed plate 231 roughly is rectangle and the parallel third direction X of its long axis direction, and fixed plate 231 is formed with three perforation 2311.

Moreover mainboard 211 internal surfaces of sliding support 21 are fixed on fixed plate 231 another surfaces, and three perforation 2311 of fixed plate 231 are corresponding to three perforation 2111 of sliding support 21.

Pedestal 1 according to the above is roughly as follows with the linking relationship of sliding unit 2: but described two slide blocks 22 be located in two slide rails 13 respectively synchronizing moving so that above-mentioned sliding support 21 and separator 23 are placed in the above-mentioned containing space 123 movably.In other words, two slide blocks 22 can move back and forth along first direction Z in two slide rails 13.

Described three linkage units 3 respectively have a spring 31, a coupling component 32 and a connection piece 33.Because above-mentioned three linkage units 3 are identical structure, following will only describing with one of them linkage unit 3.

Described spring 31 is further defined to fixed force spring 311 in this enforcement, above-mentioned fixed force spring 311 is arranged in containing space 123 and is formed with elastic part 3111 and an end 3112 of a curling shape.And above-mentioned end 3112 is formed with a perforation 3113.

Wherein, above-mentioned elastic part 3111 is arranged between stop catch plate 142 and the base plate 11, and end 3112 is located in and the substrate 141 of the mainboard 121 of fixed support 12 and interdiction piece 14 between, and the screw (not shown) sequentially by perforation 1411, the perforation 3113 of end 3112 and the perforation 1211 of mainboard 121 of substrate 141, is fixed on the fixed support 12 so as to making end 3112.

Please cooperate the A referring to Fig. 5, described coupling component 32 has a traction piece 32a, traction piece 32a roughly is square body, and traction piece 32a end face is concaved with a U-groove bevel 321 and is positioned at a pair of positioning hole 322 on U-groove bevel 321 sides, and above-mentioned traction piece 32a bottom surface then is concaved with and roughly is a half-terete groove 323.In addition, form a bump 328 on the diapire of U-groove bevel 321 bottoms.

Wherein, described traction piece 32a is arranged on the fixed force spring 311, and groove 323 is sheathed on the elastic part 3111 of fixed force spring 311, and the locating column 15 of interdiction piece 14 is arranged in the positioning hole 322 of traction piece 32a.

It should be noted that, be provided with the demarcation strip 232 of a slice separator 23 between any two adjacent traction piece 32a, so as to reaching the effect that separates, and produce can avoid traction piece 32a to compress fixed force spring 311 together moving the time crookedly, and then avoid fixed force spring 311 to produce improper stretchings and affect operation.

The plate body of described connection piece 33 for taking the shape of the letter U, connection piece 33 are located in the U-groove bevel 321 of traction piece 32a and coat bump 328, and connection piece 33 does not protrude from traction piece 32a outer surface.

Wherein, position, both sides and its bump that coats 328 that connection piece 33 is relative, the parallel second direction Y in position from corresponding separator 23 perforation 2311 is formed with respectively a perforation 331,324, and extends and be formed with a blind hole 325 in the traction piece 32a position that is not bonded part 33 coatings along above-mentioned perforation 331,324 directions.

In sum, the present embodiment shown in Fig. 1 to 3, its linkage unit 3 does not have any annexation with sliding unit 2, namely, the object (as: screen) that the fixed force spring 311 of linkage unit 3 does not carry sliding unit 2 and installs.

Therefore, when making it be adjusted to extreme lower position by the extreme higher position, it is motionless that the position of linkage unit 3 keeps when sliding unit 2 is stressed, and in other words, linkage unit 3 keeps definite value with respect to the distance of working surface 4.

Whereby, when screen elevator apparatus in the stock or transport in the process, sliding unit 2 can be adjusted to extreme lower position to dwindle the required space that takies of screen elevator apparatus, and linkage unit 3 fixed force springs 311 of this moment keep its positions and stressed being stretched not, produce so as to the facts of avoiding elastic fatique.Yet in the process of transporting, affected by effect of inertia and constantly slide for fear of sliding unit 2, for example generally can utilize the Poly dragon to pack sliding unit 2, limit it and move.

Next as Fig. 4, Fig. 5, and Fig. 5 A shown in, form the interlock states with regard to each linkage unit 3 and sliding unit 2, and the situation that sliding unit 2 is in the extreme higher position is carried out the explanation of interelement annexation.

At this moment, each further has described three coupling components 32 a force-guided stem 32b(and namely additionally plugs respectively a force-guided stem 32b), take double-screw bolt as example, and the parallel second direction Y of force-guided stem 32b sequentially is arranged in the perforation 331,324 and the blind hole 325 of traction piece 32a of perforation 2311, the connection piece 33 of perforation 2111, separator 23 of sliding support 21 and the bump 328 that coats thereof to described force-guided stem 32b in this enforcement.

Wherein, the end of force-guided stem 32b is formed with outside thread, and connection piece 33 is formed with internal thread in the other internal surfaces of perforation 331, and described internal thread is corresponding to outside thread, and blind hole 325 apertures of above-mentioned traction piece 32a are slightly less than the diameter of force-guided stem 32b end.Whereby, when the terminal outside thread spiral of force-guided stem 32b penetrates blind hole 325 by connection piece 33 internal threads, force-guided stem 32b and traction piece 32a will produce drive fit, and the operator will experience larger resistance, pass connection piece 33 so as to prompting operation person's force-guided stem 32b and enter in the blind hole 325.

Yet, above-mentioned force-guided stem 32b also can be designed to other forms except double-screw bolt, for example: force-guided stem 32b can be designed to push button structure (not shown), and then described three linkage units 3 can determine whether being connected in sliding unit 2 by the force-guided stem 32b that presses separately respectively.In addition, also can omit coupling component 32 and connection piece 33, directly plug force-guided stem 32b and compress fixed force spring 311, also can reach similar effect.

By above-mentioned design, the linkage unit 3 of present embodiment can be connected in sliding unit 2 by its force-guided stem 32b, so that the loading of sliding unit 2 and the object (as: screen) installed thereof can be passed to fixed force spring 311.

Moreover, when sliding unit 2 stressed and when making it be adjusted to extreme lower position (such as Fig. 6) by extreme higher position (such as Fig. 4), linkage unit 3 will be by its force-guided stem 32b by interlock together.

In more detail, when sliding unit 2 is stressed when moving towards extreme lower position (screen elevator apparatus is adjusted to Fig. 6 by Fig. 4), then as shown in Figure 7, above-mentioned strength will be passed to traction piece 32a by force-guided stem 32b, so that traction piece 32a breaks away from locating column 15, and traction piece 32a will together move down with sliding unit 2.At this moment, the elastic part 3111 of fixed force spring 311 is subject to compressing of traction piece 32a, and makes elastic part 3111 towards rotating in contrast to its curling direction, and then makes elastic part 3111 by almost being that curling state becomes the state that part is straightened fully.

Wherein, the length of the part that above-mentioned elastic part 3111 is straightened roughly is equal to the distance that sliding unit 2 moves, and in other words, the linkage unit 3 of sliding unit 2 and cooperation thereof will synchronously produce identical displacement amount with respect to the distance of working surface 4.

It should be noted that, sliding unit 2 is between extreme higher position and extreme lower position during conversion, no matter the length of the part that described fixed force spring 311 its elastic part 3111 are straightened why, fixed force spring 311 all can provide roughly the same restoring force (being directed upwardly), and interlock is substantially equal to the weight of sliding unit 2 and institute's mounting object (as: screen) thereof in total restoring force of the fixed force spring 311 of sliding unit 2.So as to making sliding unit 2 and institute's mounting object thereof can stop at any time the extreme higher position to the arbitrary position between the extreme lower position.

In more detail, the restoring force that the fixed force spring 311 of described three linkage units 3 provides does not separately need all identical, as long as and meet above-mentioned condition, the user can be according to the weight of sliding unit 2 and institute's mounting object thereof with linkage unit 3 interlocks of varying number in sliding unit 2(namely part linkage unit 3 can be in separated state), so just can make sliding unit 2 and institute's mounting object thereof reach the effect that stops at any time.

For instance, if three fixed force spring A, B, the available restoring forces of C are respectively 1 unit, 2 units and 4 units.Following table is the collocation situation that three fixed force spring A, B, C may occur, that is to say, after optionally arranging in pairs or groups, total restoring force of 7 kinds (1 ~ 7 unit) different sizes may appear in three fixed force spring A, B, C, in addition, such as the state of non-selected any fixed force spring among Fig. 1 to Fig. 3, Zong restoring force is exactly 0.

Spring is selected	Total restoring force	Spring is selected	Total restoring force
				Fixed force spring A	1	Fixed force spring A+C	5
Fixed force spring B	2	Fixed force spring B+C	6
				Fixed force spring C	4	Fixed force spring A+B+C	7
Fixed force spring A+B	3	Without fixed force spring	0

Replenish a bit especially again, also one of them selectivity of three fixed force springs can be got rid of, namely make its corresponding coupling component 32 perseverances be connected in sliding unit 2 and be connected in its corresponding spring 31, for example force-guided stem 32b sequentially be arranged in perforation 2111, perforation 2311, the perforation 331 of connection piece 33, and the perforation 324 of traction piece 32a and blind hole 325 after, again it is welded, makes it have default restoring force.

Embodiment two

See also Fig. 8 to Figure 10, it is embodiment two of the present utility model, present embodiment and embodiment one are similar, exist together mutually and no longer repeat, and both differences mainly are to utilize extension spring to replace fixed force spring, and in addition, present embodiment is not provided with separator 23, and the linkage unit 3 of present embodiment and the element that is connected thereof are different from embodiment one, and concrete Discrepancy Description is as follows.

The mainboard 121 parallel first direction Z of present embodiment fixed support 12 further are formed with among three spaced microscler guide hole 1212(figure and only show two).And described interdiction piece 14 is arranged in containing space 123, and interdiction piece 14 be formed with a substrate 141, from aforesaid substrate 141 ora terminalis vertically bend extension a stop catch plate 142, and extend and three cross sections being distributed in distance are the support arm 143 of L shape from above-mentioned stop catch plate 142 ora terminalis.

Moreover the perforation 1211 that described substrate 141 passes its perforation 1411 and fixed support 12 by the screw (not shown) is so that interdiction piece 14 is fixed in mainboard 121 internal surfaces of fixed support 12.

Described three linkage units 3 respectively have a spring 31, a coupling component 32 and a connection piece 33.Because above-mentioned three linkage units 3 are identical structure, following will describing with one of them linkage unit 3.

Described spring 31 is further defined to extension spring 312 in this enforcement, above-mentioned extension spring 312 is arranged in containing space 123 and is formed with a pars contractilis 3121 and two hooks 3122 of self extending section 3121 two ends extension.Wherein, above-mentioned pars contractilis 3121 is between stop catch plate 142 and base plate 11, and described one of them hook 3122 hang on the support arm 143 of interdiction piece 14.

Described coupling component 32 has a traction piece 32a, traction piece 32a roughly is cylindrical body and is formed with a path section 326 and is connected in a large footpath section 327 of path section 326, end face in path section 326 is concaved with a positioning hole 322, and is concaved with a blind hole 325 in the end face of large footpath section 327.And large footpath section 327 is concaved with the groove 323 of an annular in the surface at substantial middle position.

Wherein, path section 326 for both sides scabble cylindric, and the distance of being scabbled the position is approximately the width (not shown) of guide hole 1212 on third direction X.Path section 326 is arranged in the guide hole 1212, and the position of blind hole 325 is corresponding to the perforation 2111 of sliding support 21.And another hook 3122 of above-mentioned extension spring 312 hang in the groove 323 of traction piece 32a.

Described connection piece 33 is formed with the projection 333 that a positioning plate 332 and self-align plate 332 extends, and above-mentioned positioning plate 332 is formed with a perforation 331 with projection 333, and perforation 331 external forms that are positioned at projection 333 positions are roughly corresponding to above-mentioned path section 326.

Wherein, the perforation 331 that is positioned at projection 333 positions is sheathed on path section 326, and positioning plate 332 is connected to mainboard 121 outer surfaces of fixed support 12, and be arranged in the perforation 331 of connection piece 33 and the positioning hole 322 of traction piece 32a by the screw (not shown), so that connection piece 33 can move along guide hole 1212 with traction piece 32a.

In sum, Fig. 8 extremely linkage unit 3 of present embodiment shown in Figure 10 does not have any annexation with sliding unit 2, namely, and the object (as: screen) that the extension spring 312 of linkage unit 3 does not carry sliding unit 2 and installs.

Next such as Figure 11 and shown in Figure 12, form the interlock states with regard to each linkage unit 3 and sliding unit 2, and the situation that sliding unit 2 is in the extreme higher position is carried out the explanation of interelement annexation.

At this moment, each further has a force-guided stem 32b described three coupling components 32, and take screw as example, and the parallel second direction Y of force-guided stem 32b sequentially is arranged in the perforation 2111 of sliding support 21 and the blind hole 325 of traction piece 32a to described force-guided stem 32b in this enforcement.

Yet, above-mentioned force-guided stem 32b also can be designed to other forms except screw, for example: force-guided stem 32b is designed to push button structure (not shown), and then described three linkage units 3 can determine whether being connected in sliding unit 2 by the force-guided stem 32b that presses separately respectively.

Therefore, the linkage unit 3 of present embodiment can be connected in sliding unit 2 by its force-guided stem 32b, so that the object (as: screen) that extension spring 312 can carry sliding unit 2 and install.

Moreover, when sliding unit 2 stressed and when making it be adjusted to extreme lower position (such as Figure 13) by extreme higher position (such as Figure 11), linkage unit 3 will be by its force-guided stem 32b by interlock together.

In more detail, when sliding unit 2 is stressed when moving towards extreme lower position (screen elevator apparatus is adjusted to Figure 13 by Figure 11), then as shown in figure 14, above-mentioned strength will be passed to traction piece 32a by force-guided stem 32b, so that traction piece 32a drives extension spring 312, and then make traction piece 32a and sliding unit 2 together move down.At this moment, the pars contractilis 3121 of extension spring 312 extends under tension.

Wherein, the length that above-mentioned pars contractilis 3121 extends roughly is equal to the distance that sliding unit 2 moves, and in other words, the linkage unit 3 of sliding unit 2 and cooperation thereof will synchronously produce identical displacement amount with respect to the distance of working surface 4.

It should be noted that, above-mentionedly be positioned at extreme higher position and extreme lower position as example take sliding unit 2, but when using, the restoring force that extension spring 312 provides (being directed upwardly) can change to some extent along with the length that is stretched, namely, sliding unit 2 and institute's mounting object (as: screen) thereof the scope that can stop at any time may be less.

For instance, if total loading of sliding unit 2 and institute's mounting object thereof is W, total restoring force of extension spring 312 is F, and the maximum static friction force of device is f, then when (W+f) 〉=F 〉=(W-f), sliding unit 2 and institute's mounting object thereof can reach and stop at any time effect.And sliding unit 2 and institute's mounting object thereof can stop between primary importance and the second place at any time, but present embodiment provide stop at any time scope may than embodiment one provide to stop at any time scope little.

Similarly, the restoring force that the extension spring 312 of described three linkage units 3 provides does not separately need all identical, can utilize force-guided stem 32b to carry out various selectivity collocation yet.

Comprehensive, the utility model embodiment's screen elevator apparatus is in the stock or transport in the process, described linkage unit 3 must cooperatively interact to form separated state with sliding unit 2, and sliding unit 2 is adjusted to extreme lower position to dwindle the required space that takies of screen elevator apparatus, and the spring 31 of linkage unit 3 will keep its position and stressed being stretched not this moment, so as to avoiding the thing generation of elastic fatique.

Moreover, the user can be according to the weight of sliding unit 2 and institute's mounting object thereof with linkage unit 3 interlocks of varying number in sliding unit 2(namely part linkage unit 3 can be in separated state), stop at the required height of user to make sliding unit 2 and institute's mounting object thereof.

The above only is embodiment of the present utility model, and it is not to limit to protection domain of the present utility model.

Claims

1. a screen elevator apparatus is characterized in that, is used for being placed on the working surface, and this screen elevator apparatus comprises:

One pedestal is arranged on this working surface;

One sliding support is arranged at this pedestal slidably;

A plurality of springs, an end of each spring is fixed in this pedestal; And

To a plurality of coupling components that should a plurality of springs, each coupling component is independent respectively selectively to be connected this sliding support and is connected in its corresponding spring, forms an interlock state,

Wherein, under this interlock state, when relative this pedestal of this sliding support slided, interlock together slided at the described coupling component of this sliding support, make the camber of spring of described correspondence produce a total restoring force, this sliding support is stopped between a primary importance and the second place at any time.

2. screen elevator apparatus as claimed in claim 1, it is characterized in that this pedestal has a fixed support and an interdiction piece, this sliding support is arranged at this fixed support slidably, this interdiction piece is fixed on this fixed support, and each coupling component is limited in this interdiction piece.

3. screen elevator apparatus as claimed in claim 1, it is characterized in that, these a plurality of springs are further defined to fixed force spring, each fixed force spring is formed with an elastic part and an end, and the elastic part of each fixed force spring is connected to its corresponding coupling component, and this pedestal is fixed in the end of each fixed force spring.

4. screen elevator apparatus as claimed in claim 3 is characterized in that, each coupling component has a traction piece, and each traction piece is formed with a groove, and the elastic part of each fixed force spring is located in its corresponding coupling component groove.

5. screen elevator apparatus as claimed in claim 2 is characterized in that, each coupling component is between the fixed force spring and this interdiction piece of its butt, and each coupling component forms a positioning hole, and this interdiction piece is provided with a plurality of locating columns that are used for being arranged in these a plurality of positioning holes.

6. screen elevator apparatus as claimed in claim 2, it is characterized in that, these a plurality of springs are further defined to extension spring, the hook that each extension spring is formed with a pars contractilis and is extended respectively by these pars contractilis two ends, and two hooks of each extension spring are positioned respectively its corresponding coupling component and this interdiction piece.

7. screen elevator apparatus as claimed in claim 6, it is characterized in that this interdiction piece is formed with a plurality of support arms, each coupling component has a traction piece, each traction piece is formed with a groove, and two hooks of each extension spring are positioned respectively its corresponding coupling component groove and the support arm of this interdiction piece.

8. screen elevator apparatus as claimed in claim 7, it is characterized in that, this fixed support is formed with a plurality of microscler guide holes, the long axis direction of these a plurality of guide holes is parallel to respectively the draw direction of these a plurality of extension springs, each traction piece is provided with a connection piece, and the connection piece of these a plurality of traction pieces and collocation thereof is located at this fixed support movably along these a plurality of guide holes respectively.

9. such as each described screen elevator apparatus in the claim 1 to 8, it is characterized in that interlock has respectively the force-guided stem of this sliding support of connection in the coupling component of this sliding support.

10. such as each described screen elevator apparatus in the claim 1 to 8, it is characterized in that at least one of them perseverance of these a plurality of coupling components is connected in this sliding support and is connected in its corresponding spring.