TWI439130B - Height adjustable stand - Google Patents

Description

Lifting mechanism

The invention relates to a lifting mechanism, in particular to an lifting mechanism of an electronic device.

With the wide application of computers, their functions are increasing and perfecting, and their volume tends to be thinner and thinner. Since the liquid crystal display has the advantages of small size and light weight relative to a CRT (Cathode Ray Tube) display, it gradually replaces the CRT display as a main component of the computer. In order to facilitate people to view the liquid crystal display from different perspectives, conventional liquid crystal displays are usually provided with a lifting mechanism to adjust the height and inclination of the liquid crystal display.

A lifting mechanism includes a base, a connecting seat, a first connecting rod unit, a second connecting rod unit, two first pivoting assemblies, two second pivoting assemblies and elastic members. The bottom ends of the first link unit and the second link unit are respectively connected to the two sides of the base by two first pivoting assemblies. The second pivoting components are respectively disposed at the top ends of the first link unit and the second link unit, and are connected to the connecting base. The two ends of the elastic member are respectively connected to the base and the connecting seat. The connector is for connection to a liquid crystal display. The liquid crystal display is rotatable relative to the first pivoting component and the second pivoting component.

However, since the first link unit and the second link unit are respectively connected to the connecting seat by a second pivoting component, when the lifting mechanism is subjected to the gravity of the liquid crystal display, it is easy to appear in the second process during the movement. The pivot of the pivotal assembly is not on the same axis In this case, the liquid crystal display is tilted and is not convenient for the user to watch.

In view of the above, it is necessary to provide an elevating mechanism that prevents tilting of the liquid crystal display mounted thereon.

A lifting mechanism includes a base, a connecting base, a first pivoting component and a second pivoting component pivoted between the base and the connecting base. The first pivoting assembly includes a first pivot, the second pivoting assembly includes a second pivot, and the first pivot and the second pivot are directly coupled together coaxially, the lifting mechanism further comprising two first links And the second connecting rods, wherein the two first connecting rods and the two second connecting rods are respectively rotatably connected to the base, and the other ends of the two first connecting rods and the two second connecting rods are respectively The first pivoting component and the second pivoting component are respectively rotatably connected to the connecting seat, and the first pivoting component and the second pivoting component respectively comprise a limiting component, and the two ends of the limiting component respectively A connecting rod and a second connecting rod are connected, and the two ends of the limiting member respectively form a limiting protrusion, wherein the two limiting protrusions are respectively in the rotation process of the first connecting rod and the second connecting rod A link or a second link abuts to limit the angle of rotation of the first link and the second link relative to the base.

The first pivot and the second pivot of the lifting mechanism are directly connected together coaxially, so that they can be kept coaxial during use, so that the liquid crystal display on the connecting base can always be in a horizontal position without tilting.

30‧‧‧ Lifting mechanism

31‧‧‧Base

311‧‧‧ bracket

312‧‧‧Connecting piece

322‧‧‧Connecting piece

32‧‧‧Connecting Block

321‧‧‧ Main body

323‧‧‧Limited slot

324, 3313‧‧‧ pivot hole

325‧‧‧Positioning holes

326‧‧‧Bump

327‧‧‧Card tablets

33‧‧‧first link

331‧‧‧ side panel

332‧‧‧First substrate

333‧‧‧second substrate

34‧‧‧ openings

3311‧‧‧ screw hole

3312‧‧‧ pivoting piece

40‧‧‧First pivot assembly

401‧‧‧ first pivot

4011‧‧‧ Column

4012‧‧‧Flange

4013, 5013‧‧‧ deformation shaft

4014‧‧‧Threaded Department

4015‧‧‧Interface

402‧‧‧Limited parts

4021‧‧‧ Ontology

4025‧‧‧Connecting Department

4022, 4031, 4051, 4081, 4111‧‧‧ Shaped shaft hole

4032, 4026‧‧‧through holes

4027‧‧‧Limited bulges

403‧‧‧Fixed piece

405‧‧‧ Limit gasket

4052‧‧‧Limited blocks

406, 362‧‧‧ friction plates

407‧‧‧Fixed gasket

4071‧‧‧Axis hole

4072‧‧‧Location film

4073‧‧‧ positioning slot

408‧‧‧Rotating gasket

410‧‧‧torsion spring

4101‧‧‧ Reeds

4102‧‧‧ pins

411‧‧‧Resistance film

501‧‧‧second pivot

5015‧‧‧ Socket slot

36‧‧‧Connecting components

361‧‧‧screw

363‧‧‧shims

364‧‧‧ nuts

37‧‧‧ Third pivot assembly

38‧‧‧Connecting plate

381‧‧‧floor

382‧‧‧ side baffle

383‧‧‧ hook

39‧‧‧Flexible parts

391‧‧‧ hook

1 is a perspective view of a lifting mechanism according to a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a portion of the lifting mechanism shown in Figure 1.

3 is a perspective view of the first pivot and the second pivot shown in FIG. 2.

4 is a perspective view of the limiting member shown in FIG. 2.

Figure 5 is a partially exploded perspective view of the lifting mechanism of Figure 1.

Figure 6 is a side elevational view of the lifting mechanism of Figure 1.

The lifting mechanism of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , the embodiment provides a lifting mechanism 30 including a base 31 , a connecting base 32 , two first connecting rods 33 , two second connecting rods 34 , a first pivoting assembly 40 , and a second The pivoting assembly 50, the four-connecting component 36, the fourth third pivoting component 37, the two connecting plates 38, the four elastic members 39, and the plurality of fixing members 301.

The base 31 includes a bracket 311 having a substantially "I" shape and a connecting piece 312 extending from the two sides of the top end of the bracket 311.

Referring to FIG. 2 at the same time, the connecting base 32 includes a main body portion 321 and two connecting pieces 322 extending from two sides of the bottom end of the main body portion 321 . A limiting slot 323 is defined in one end of the connecting piece 322 away from the main body 321 . A circular pivot hole 324 is defined adjacent to the limiting slot 323 . The connecting piece 322 further defines a rectangular positioning hole 325 in the vicinity of the pivot hole 324. A protrusion 326 is formed on one end of the connecting piece 322 near the main body portion 321 , and a latching piece 327 is formed on the side of the protruding piece 326 .

The first link 33 includes two opposite side plates 331 and a first substrate 332 and a second substrate 333 connected to the two side plates 331 respectively. The first substrate 332, the second substrate 333 and the two sides The plates 331 collectively define a rectangular opening 334. The two side plates 331 are respectively provided with two screw holes 3311 corresponding to the positions of the openings 334. A pivoting piece 3312 is further formed at the two ends of the side plate 331 , and a pivot hole 3313 is defined in the center of the pivoting piece 3312 . The second link 34 has a structure similar to that of the first link 33.

The first pivoting assembly 40 includes a first pivot 401, a limiting member 402, a fixing piece 403, a washer 404, a limiting spacer 405, a friction plate 406, a fixing spacer 407, a rotating spacer 408, a collar 409, The torsion spring 410, the resisting piece 411, the spacer set 412, the elastic piece set 413, and the lock 414.

Referring to FIG. 3 at the same time, the first pivot 401 sequentially includes a columnar portion 4011, a flange portion 4012, and a deformed shaft portion 4013. The flange portion 4012 has a disk shape. The deformed shaft portion 4013 is provided with two cut surfaces (not shown) extending in the axial direction thereof. The deformed shaft portion 4013 extends from the end of the flange portion 4012 with a threaded portion 4014. The threaded portion 4014 extends outwardly with a plug portion 4015 having a cross-section of a "ten" shape.

Referring to FIG. 4 at the same time, the limiting member 402 includes a circular body 4021 and a connecting portion 4025 extending from two sides of the circumference of the body 4021. A deformed shaft hole 4022 is defined in the center of the main body 4021. The cross-sectional shape of the shaft hole 4022 corresponds to the cross-sectional shape of the deforming shaft portion 4013 of the first pivot 401. The profiled shaft hole 4022 is for the first pivot 401 to pass through. A connecting through hole 4026 is defined in the center of the connecting portion 4025, and a limiting protrusion 4027 is formed at the edge. The profiled through hole 4026 is for the connection member 36 to pass through.

A fixed-shaped shaft hole 4031 is defined in the middle of the fixing piece 403, and the shape thereof corresponds to the cross-sectional shape of the deforming shaft portion 4013 of the first pivot 401, and the two-shaped hole 4032 is symmetrically opened on both sides of the shaped shaft hole 4031. The shaped shaft hole 4031 is used for the first pivot 401 to pass through, the through hole 4032 is provided for the connection assembly 36 to be worn.

A limiting shaft hole 4051 is defined in the center of the limiting spacer 405, so that the limiting spacer 405 is non-rotatably sleeved on the first pivot 401, and a limiting block 4052 is protruded from the edge of the limiting spacer 405.

The fixing spacer 407 is a sheet-shaped sheet metal member, and a circular shaft hole 4071 is formed in a middle portion thereof, and a positioning piece 4072 is formed at the edge to be bent. Two opposite positioning grooves 4073 are also formed on one end surface of the rotating washer 407.

The rotating shim 408 is a sheet-like sheet metal member that is generally circular. A rotating shaft hole 4081 is defined in the middle of the rotating washer 408, so that the rotating washer 408 is non-rotatably sleeved on the first pivot 401. Two positioning protrusions (not shown) are formed on one end surface of the rotating spacer 408 for engaging with the positioning groove 4073 on the fixing spacer 407.

The torsion spring 410 includes a coil portion 4101 and a pin 4102 extending from both ends of the coil portion 4101.

The resisting piece 411 is a circular piece, and a shaped shaft hole 4111 is defined in the middle portion thereof, so that the resisting piece 411 is non-rotatably sleeved on the first pivot 401, and a notch 4112 is defined in the edge of the resisting piece 411. The notch 4112 is for mating with one of the pins 4102 of the torsion spring 410.

The second pivoting assembly 50 has a structure similar to that of the first pivoting assembly 40, except that the end of the deforming shaft portion 5013 of the second pivot 501 of the second pivoting assembly 50 is provided with a "ten" shaped slot. 5015, the shape of the insertion slot 5015 is adapted to the insertion portion 4015 of the first pivot 401.

The connecting component 36 is configured to connect the first connecting rod 33 with the limiting member 402 and the fixing piece 403, and includes a screw 361, four friction plates 362, a gasket 363 and a nut 364.

The third pivoting assembly 37 is symmetrically mounted on the two sides of the connecting piece 312 of the base 31 for pivotally connecting the two first connecting rods 33 and the second connecting rods 34 to the connecting piece 312 of the base 31, thereby The lifting mechanism 30 is rotatable about the third pivoting assembly 37 to effect lifting of the lifting mechanism 30.

Referring to FIG. 5, the connecting plate 38 includes a rectangular bottom plate 381, and two opposite side edges of the bottom plate 381 respectively extend perpendicularly with two side baffles 382. One end of the bottom plate 381 is also formed with four hook portions 383 arranged side by side.

In this embodiment, the elastic member 39 is a tension spring, and the two ends thereof respectively extend with a hook 391.

Referring to FIG. 1 to FIG. 5 , when the lifting mechanism 30 is assembled, the two first connecting rods 33 are symmetrically mounted on the two sides of the connecting piece 312 of the base 31 by the two third pivoting assemblies 37 , and then the second and second connecting rods The connecting rods 34 are symmetrically mounted on the two sides of the base 31 by the two third pivoting assemblies 37. Then, the first pivot 401 is sequentially passed through the shaped through hole 4026 of the limiting member 402, the shaped shaft hole 4031 of the fixing piece 403, the washer 404, the limiting spacer 405, the friction plate 406, and one of the connecting blocks 32. a pivot hole 324, a fixing washer 407, a rotating washer 408, a collar 409, a torsion spring 410, a resisting piece 411, a spacer group 412, and a spring group 413, and then screwing the locking member 414 to the first pivot On the threaded portion 4014 of the shaft 401, the limiting block 4052 of the limiting spacer 405 is disposed in the limiting slot 323 of the connecting piece 322. One of the pins 4102 of the torsion spring 410 is engaged with the notch of the resisting piece 411. 4112, another pin is disposed between the protrusion 326 of the connecting base 32 and the card piece 327. The second pivot assembly 50 can be assembled to the other tab 322 of the connector 32 in accordance with the same assembly procedure. Then will be The insertion portion 4015 of a pivot 401 is inserted into the insertion groove 5015 of the second pivot. The first link 33 and the second link 34 are respectively connected to the connecting base 32 by the connecting component 36, and the first connecting rod 33 and the second connecting rod 34 are respectively disposed on the first pivot 401 or the second Two sides of the pivot 501. The two side baffles 382 of the connecting plate 38 are inserted into the openings (not shown) of the second connecting rods 34, and then one of the hooks 391 of the elastic member 39 is hung on the hook portion 383 of the connecting plate 38. Then, the two side baffles 382 of the other connecting plate 38 are snapped into the openings 334 of the two first links 33, and the other hooks 391 of the elastic members 39 are hung on the hooks 383 of the other connecting plates 38. Then, the connecting plate 38 is respectively engaged with the first link 33 and the second link 34 by the fixing member 301. At this time, the elastic force of the elastic member 39 allows the lifting mechanism 30 to easily adjust the height of the liquid crystal display relative to the connecting seat 32 with a small external force.

Referring to FIG. 6 , after the lifting mechanism 30 is assembled, the first connecting rod 33 and the second connecting rod 34 are respectively rotatable relative to the base 31 around the second third pivoting assembly 37 , and the connecting seat 32 can be wound around the first pivot. The 401 and the second pivot 501 are rotated relative to the limiting member 402, the fixing piece 403, the first connecting rod 33 and the second connecting rod 34, and the first connecting rod 33 and the second connecting rod 34 are respectively rotatable around the two connecting assemblies 36. Turn. Since the limiting block 4052 of the limiting spacer 405 of the first pivoting component 40 slides in the limiting slot 323 of the connecting seat 32, the rotation angle of the connecting base 32 relative to the first link 33 and the second link 34 can be restricted. . When the first link 33 and the second link 34 are rotated by a certain angle with respect to the base 31, the limiting protrusion 4027 on the limiting member 402 will be respectively offset from the end of the first link 33 or the second link 34. Thereby, the rotation angle of the first link 33 and the second link 34 with respect to the base 31 is restricted.

Since the first pivot 401 and the second pivot 501 of the lifting mechanism 30 are directly coupled together coaxially, the first pivot 401 and the second pivot 501 remain coaxial during use. It can prevent the liquid crystal display connected to the connector 32 from being tilted. In addition, the first pivoting component 40 and the second pivoting component 50 are provided with a limiting component 402 to limit the rotation angle of the first link 32 and the second link 34 relative to the base 31.

It can be understood that the insertion portion 4015 of the first pivot 401 can also have other shapes, such as a cylindrical shape, and only a correspondingly shaped insertion groove 5015 can be formed at the end of the second pivot 501. Further, the lifting mechanism 30 may also include one, two, three or more elastic members depending on the weight of the load on the connecting base 32. In addition, the lifting mechanism 30 can only implement the tilt adjustment without the height adjustment function. In this case, the first pivoting assembly 40 and the second pivoting assembly 50 can be directly pivoted to the base 31, and the connecting base 32 and the base 31 can be connected. The shape can be changed as appropriate.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

30‧‧‧ Lifting mechanism

31‧‧‧Base

311‧‧‧ bracket

312, 322‧‧‧ connecting pieces

32‧‧‧Connecting Block

321‧‧‧ Main body

33‧‧‧first link

34‧‧‧second link

36‧‧‧Connecting components

37‧‧‧ Third pivot assembly

38‧‧‧Connecting plate

301‧‧‧Fixed parts

40‧‧‧First pivot assembly

50‧‧‧Second pivotal assembly

Claims (7)

A lifting mechanism includes a base, a connecting base, a first pivoting component and a second pivoting component pivotally connected between the base and the connecting base, the first pivoting component comprising a first pivot, the second pivoting component comprising The second pivot is improved in that the first pivot and the second pivot are directly coupled together coaxially, and the lifting mechanism further includes two first links and two second links, the two first links and One of the two second links is rotatably connected to the base, and the other ends of the two first links and the second links are respectively connected by the first pivoting component and the second pivoting component The first pivoting component and the second pivoting component respectively comprise a limiting component, and the two ends of the limiting component are respectively connected to the first connecting rod and the second connecting rod, and the limiting position is respectively The two ends of the member respectively form a limiting protrusion, and the two limiting protrusions respectively abut the first link or the second link during the rotation of the first link and the second link to limit the first The angle of rotation of a link and a second link relative to the base. The lifting mechanism of claim 1, wherein the first pivot and the second pivot are detachably connected. The lifting mechanism of claim 1, wherein the end of the first pivot shaft is formed with a plug portion, and the end portion of the first two pivot shafts is provided with a socket, the plug portion is In the docking slot. The lifting mechanism of claim 3, wherein the insertion portion has a cross-section of a "ten" shape, and the insertion groove is a "ten" groove adapted to the insertion portion. The lifting mechanism of claim 1, wherein the connecting base comprises two opposite connecting pieces, and the first pivot and the second pivot respectively pivotally connect the connecting pieces. The lifting mechanism of claim 1, wherein the first connecting rod and the second connecting rod respectively comprise two opposite side plates and a first substrate and a second substrate respectively connected to the two side plates, the first substrate The second substrate and the two side plates together form a rectangular opening. The lifting mechanism further includes a plurality of elastic members and two connecting plates. The two ends of the elastic members are respectively connected to the two connecting plates, wherein one connecting plate and two first connecting rods are respectively connected Connected separately, the other connecting plate and the second connecting rod are respectively connected. The lifting mechanism of claim 1, wherein the first pivoting component comprises a limiting spacer, and a limiting slot is defined in the connecting seat, and the limiting block of the limiting spacer is disposed at the limit In the bit groove, to limit the rotation angle of the connecting seat relative to the first link.