TWI361004B - Lifting mechanism - Google Patents

Description

1361004 [Too year December h nuclear replacement page VI. Description of the invention: [Technical field of the invention] [0001] The present invention relates to a lifting mechanism, and more particularly to a lifting mechanism for adjusting the height of a display screen. [Prior Art] [0002] With the widespread use of computers, their functions are increasing and perfect, and their volume tends to be thinner and lighter. Since the liquid crystal display device has the advantages of small size and light weight with respect to a CRT (Cathode Ray Tube) display, it has gradually become a mainstream display device for computers. In order to facilitate viewing of the display screen within a preferred viewing angle range and line of sight distance, conventional liquid crystal display devices are typically provided with a lifting mechanism to effect adjustment of the height of the display screen. 1 is a conventional lifting mechanism 13 for a liquid crystal display device. The liquid crystal display device includes a base 11, a lifting mechanism 13, a tilting mechanism 15, a pivoting mechanism 17, and a liquid crystal display screen (not shown). .

[0004] The lifting mechanism 13 is connected to the base 11 and the tilting mechanism 15 for moving the liquid crystal display screen up and down relative to the base 11. The pivoting mechanism 17 is disposed between the tilting mechanism 15 and the liquid crystal display screen. The pivoting shaft ι55 is connected to respectively rotate and tilt the liquid crystal display screen relative to the base U. [0005] The lifting mechanism 13 includes a lifting member 131, a guiding frame 133 and two elastic members 137. The lifting member 131 is slidably sleeved in the guide frame 33. The first end of the elastic member 137 is connected to the guide frame 133, the second end is connected to the rotating shaft 132, the rotating shaft 132 is fixed to the pivoting portion 136 of the lifting member 119, and the shaft bracket 134 is disposed between the rotating shaft 132 and the elastic member 137. The rotating shaft 132 is rotatably supported, and a friction member 139 is further disposed between the shaft bracket 134 and the rotating shaft 132 for the form number Α0101. 4/22 pages 1003477626-0 1361004 | ΐ〇0·year.12 The frictional force is generated when the rotating shaft 132 rotates around the shaft bracket 134, and the friction force and the elastic force provided by the elastic member m are used to balance the gravity of the liquid crystal display screen to position the liquid crystal display screen at a preset position. 131 sliding smoothing The lifting mechanism guide frame 133 is connected with a guiding member 135, and the lifting member 131 is provided with an oil groove 138 for accommodating lubricating oil. The liquid crystal display device further includes a --rotating mechanism 19' which includes a ring-shaped rotating member 192 fixedly coupled to the base and a disk-shaped rotating bracket 194. The surface of the rotating member 192 is fixedly coupled to the base 11, and the lower surface is rotatably coupled to the rotating bracket 194 so that the liquid crystal display can be rotated relative to the base 11. [0006] The lifting mechanism 13 adopts a structure in which the lifting member 131, the guiding frame 133 and the elastic member 137 are matched to realize the lifting and lowering of the liquid crystal display screen. In order to smoothly slide the lifting member 131 in the guiding frame 133, a guiding member is also required. The 135 and the oil groove 138 for accommodating the lubricating oil have a complicated structure and a high manufacturing cost. SUMMARY OF THE INVENTION [0007] In view of the above, it is necessary to provide a lifting mechanism that is simple in structure and low in cost.

[0008] A lifting mechanism includes a support frame, a movable frame, two guiding portions and an elastic component connected to the movable frame. The two guiding portions are disposed on the supporting frame, and the distance between the two guiding portions is The elastic assembly comprises an elastic member, two rollers and two roller sleeves. The two rollers are respectively accommodated in the two roller sleeves. The movable frame is provided with a connecting groove, and the lifting mechanism further comprises two a pin that is coupled to the roller and the roller sleeve and slidably coupled to the connecting groove. The roller is rotatable relative to the roller sleeve. The elastic member is pressed against the roller sleeve to be movable away from each other to press the guide portion. Make the 5 丨 guide to the movable frame to produce a phase with the gravity direction 097128301 Form No. A0101 Page 5 / Total 22 pages. 11 1361004 Converse support. [0013] [0013] [0013] [0013] [0013] [0013] Compared with the prior art, the lifting mechanism of the present invention is mutually coupled with the guiding portion by the elastic member The pressing provides an upward supporting force for the elastic component to balance the gravity of the liquid display screen and the arbitrary position of the liquid crystal display screen. The lifting mechanism has a simple structure and a low manufacturing cost. [Embodiment] A preferred embodiment of the present invention discloses a lifting mechanism suitable for an electronic device or a multifunction printer with a display. In the present embodiment, a liquid crystal display device will be described as an example. Referring to FIG. 2 and FIG. 3, the liquid crystal display device mo includes a base 2, a lifting mechanism 40, a tilting mechanism 60, a mounting bracket 80, and a liquid crystal display screen (not shown) connected to the mounting bracket 80. The base 2 is used to support the main body of the liquid crystal display device 100. The pitch mechanism 6 is disposed between the mounting frame 80 and the lifting mechanism 40. The pitching mechanism 6 includes a connecting frame 62 connected to the lifting mechanism 4A. The mounting frame 80 is used. Install a liquid crystal display. Referring to FIG. 4 and FIG. 5, the lifting mechanism 4 of the preferred embodiment includes a frame 41, two outer rails 42, two inner rails 43, two ball brackets 44', two guides 45, and one. The movable frame 46, the two rollers 47, a spring 48, a roller sleeve 49 and two pins 52. The support frame 41 is generally a rectangular plate body including a base plate 412 and two side plates 414'. The outer guide rails 42 are in the form of strips for fixing to the side plates 414 of the support frame 41. The inner slide rail 43 is shaped like the outer rail 42 and is slidably engageable with the outer rail 42. The ball holder 44 is disposed between the inner slide rail 43 and the outer rail to reduce the frictional friction between the inner slide rail 43 and the outer rail 42. 097128301 Form No. A0101 Page 6 of 22 1003477626-0 1361004 --: __ _ 11 ΌΟ 12 12 12 12 12 12 [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ The distance between the guiding portions 452 of the guiding members 45 is gradually reduced from the top to the bottom. [0015] The movable frame 46 includes a body 462 and two vertically extending from the two sides of the body 462.

The connecting plate 464 and the receiving portion 466 formed by the main body 462 extending perpendicularly to the main body 462 are formed with a connecting groove 4622. The two connecting plates 464 are respectively used for fixed connection with the two inner sliding rails 43. The space in the receiving portion 466 defines a receiving groove 468 that communicates with the connecting groove 4 6 2 2 . [0016] A circular central hole 472 is defined in the roller 47. The roller sleeve 49 includes a base 492 and a tab 494 extending perpendicularly from both sides of the base 492. The space enclosed by the base 492 and the two connecting pieces 494 is used to partially accommodate the roller 47. A connecting hole 4942 is also formed in the connecting piece 494, and the connecting hole 4942 corresponds to the center hole 472 on the roller 47. The spring 48 is a compression spring that is used to resist between the bases 492 of the two roller sleeves 49. The pin 52 includes a nut 522 'the diameter of the nut 522 is greater than the width of the coupling groove 4622. [0017] 097128301 When assembling the lifting mechanism 4〇, please refer to FIG. 6 at the same time, firstly, the roller sleeve 49 is partially placed in the receiving groove 468 of the receiving portion 466 of the movable frame 46, and then a roller 47 is accommodated in a roller sleeve 49. The base 492 and the two connecting pieces 494 enclose a space. Then, a pin 52 is sequentially passed through the connecting groove 4622 of the movable frame 46, and one of the roller sleeves 49 connects the connecting hole 4942 of the piece 494 and the center hole 472 of the roller 47. The connecting hole 4942 of the other connecting piece 494 is riveted, so that the movable frame 46, the roller 47 and the roller sleeve 49 are connected, and the roller 47 can be rotated relative to the roller sleeve 49, and the roller sleeve 49 can slide relative to the movable frame 46; Then, the spring 48 is placed in the receiving groove 468 of the accommodating portion 466. Form No. A0101 帛 7 pages / total 22 stomach 1003477626-0 1361004 100 years. December 23, the shuttle is correcting & 100, and then by another The nail 52 connects the other roller 47 and the roller frame 49 to the movable frame 46. At this time, the roller 47, the roller cover 49 and the spring 48 together constitute a resilient assembly. [0018] After assembling the elastic component, please refer to FIG. 3 again, the inner slide rail 43 is partially inserted into the outer rail 42 , and the ball bracket is disposed between the outer rail 42 and the inner slide 43 to form a slip. Rail structure. Then, the two outer rails are respectively fixed on the two side plates 4i4 of the branch frame 41, and then the receiving portion 466 of the movable frame 46 is placed between the two guiding members 45, and the rollers 47 at the two ends of the receiving portion 466 are respectively respectively received. Holding the guiding portion 452 of the two guiding members 45, and finally connecting the two connecting pieces 464 of the movable frame 46 across the guiding member 45 and respectively fixing them to the lower portion of the two inner sliding blocks 43. [0019] After the lifting mechanism 40 is assembled, The connecting frame 62 to which the tilting mechanism 60 of the liquid crystal display is attached is fixed to the upper portion of the inner slide rail 43 to connect the lifting mechanism 40 to the liquid crystal display screen. [0020] Please refer to FIG. 2 to FIG. 3, when using the lifting mechanism 4) When the brightness of the liquid crystal display screen is lowered, /, a downward force is applied to the liquid crystal display screen, so that the connecting frame 62 drives the inner slide rail 43 and the ball holder 44 to slide relative to the outer guide rail 42, and the inner sliding handle At the same time, the movable frame 46 is moved downwards, so that the two rollers 47 roll down and gradually approach along the guiding portion 452 of the guiding member 45, and simultaneously drive the two pins 52 to slide in the connecting groove 4622. At this time, the spring 48 is gradually Compressing and gradually increasing the guide 45 The reaction force, when the movable frame 46 is moved to the predetermined position, the application of the force to the liquid crystal display screen is stopped, then the supporting force provided by the guiding member 45 to the elastic assembly and the movable frame 46, the static friction force of the guiding member 45 and the roller 47, and the inner force The static friction between the slide rail 43 and the outer guide rail 42 and the gravity of the liquid crystal display screen act to make the movable frame 46 reach 097128301. Form No. A0101 Page 8 / Total 22 pages 1003477626-0 1361004 • 100 years. December The ridge is paged to the equilibrium state and stopped at the predetermined position. The working principle of raising the height of the liquid crystal display screen is similar to that of lowering the height of the liquid crystal display screen, except that the guiding member 45 supports the elastic component and the movable frame 46. As the liquid crystal display screen rises, it gradually decreases. [0021] Compared with the conventional lifting mechanism, the lifting mechanism _ provides the supporting force and the friction force by the cooperation of the elastic component and the guiding member 45, thereby realizing the movable frame.

The lifting and lowering of the liquid and the stagnation of the liquid stagnation at any position, the lifting mechanism W, " simple construction of fewer parts, so the manufacturing cost is lower. In addition, the lift

The mechanism 40 only needs to replace the elastic crystal a when assembling liquid crystal display screens with different weights, and the interchangeability is good, and the thickness of the entire lifting mechanism 40 is small, which can save space during packaging and transportation. It can be understood that the spring 48 can also be other elastic members for the elastic abutment roller 47, such as a spring piece, a rubber, or the like. The guide portion 452 of the guide member 45 may be disposed in other shapes such as the oblique line guide W452a as shown in FIG. 7; and the step may be set on the curved guide portion or the oblique line guide portion, as shown in the figure. Guides 452b and signs shown in Figs. 8 and 9; or as shown in Fig. 1G, only the guide portion of the guide member is cut into a curved shape and the guide portion of the guide member is singularly straight. The distance between the two guiding portions can be gradually reduced from top to bottom. Of course, the material portion of only one guiding member may be a diagonal line shape, a stepped diagonal line shape or a stepped arc shape, and the other guiding portion is an arc shape different from the shape of the guiding portion, and a stepped oblique line shape is provided. The arc-shaped or straight-shaped one of the steps. Further, the guide member 45 may be protruded from the support member to form a groove ‘ on the Z-frame 41 and a guide portion 452 may be provided on the side wall surrounding the groove. 097128301 Form No. A0101 Page 9 / Total 22 Page 1003477626-0 1361004 [0024] [0028] [0030] [0034] [0033] [0034] [10034] December 2nd>Day revision _百_ "' The invention has indeed met the requirements of the invention patent, and the above-mentioned patent application is only a preferred embodiment of the invention, and is familiar with the case. Those skilled in the art, equivalent modifications or changes made in the spirit of the invention in this case shall be included in the following patents. [Simplified description of the drawings] Figure 1 is an exploded perspective view of a conventional lifting mechanism.

Fig. 2 is a perspective view of a liquid crystal display device to which a preferred embodiment of the elevating mechanism of the present invention is applied. I Fig. 3 is a perspective assembled view of a preferred embodiment of the lifting mechanism of the present invention. Figure 4 is an exploded perspective view of the lifting mechanism of Figure 3. Figure 5 is an exploded perspective view of another elevational view of the lifting mechanism of Figure 3. Figure 6 is a partial perspective view of a preferred embodiment of the lifting mechanism of the present invention. Fig. 7 is a plan view showing a state in which the guide portion of the elevating mechanism of the present invention is obliquely shaped. Fig. 8 is a plan view showing a plan view of the elevating mechanism of the present invention on a curved guide portion. Fig. 9 is a plan view showing a state in which the elevating mechanism of the present invention is provided with a step on the oblique guide portion. Fig. 10 is a plan view showing the guide portions of the lifting mechanism of the present invention in an arc shape and a straight line, respectively. [Main component symbol description] 097128301 Form number Α 0101 Page 10 / Total 22 yellow 1003477626-0 1361004 • » ί00. December 23 Shuttle has seven pages [0035] LCD device: 100 [0036] Base: 20 [ 0037] Lifting mechanism: 40 [0038] Support frame: 41 [0039] Base plate: 412 [0040] Side plate: 414 [0041] • [0042] Outer rail: 42 Inner slide rail: 43 [0043] Ball bracket: 44 [0044 Guide: 45, 46d [0045] Guide: 452, 452a, 452b, 452c, 462d [0046] Mobile Stand: 46 • [0047] Body: 462 [0048] Connection slot: 4622 [0049] Connection plate: 464 [0050] Housing: 466 [0051] Holding groove: 468 [0052] Roller: 47 [0053] Center hole: 472 097128301 Form number A0101 Page 11 of 22 1003477626-0 1361 Page [0054] Spring: 48 [0055] Roller sleeve: 49 [0056] Base: 492 [0057] Connecting piece: 494 [0058] Connecting hole: 4942 [0059] Pin: 52

[0060] Nail Cap: 522 [0061] Pitch Mechanism: 60 [0062] Mounting Rack: 80

1003477626-0 097128301 Form Number A0101 Page 12 of 22

Claims (1)

1361004 r—~~ . : -· . 100 years. December 23, the shuttle is replacing the page '.·. VII. Patent application scope: 1. A lifting mechanism, including a support frame and a movable frame, the improvement is: The lifting mechanism further includes two guiding portions disposed on the supporting frame and an elastic component connected to the movable frame, wherein the distance between the two guiding portions is gradually reduced from top to bottom, and the elastic component comprises an elastic member and two The roller and the two roller sleeves are respectively accommodated in the two roller sleeves. The movable frame is provided with a connecting slot. The lifting mechanism further comprises two pins, the pin connecting the roller and the roller sleeve and slidingly connecting with the connecting slot The roller is rotatable relative to the roller sleeve, and the elastic member is pressed between the roller sleeves to be movable away from each other to drive the roller against the guiding portion and to cause the guiding portion to generate a direction opposite to the gravity of the movable frame. Supporting the building. 2. The lifting mechanism of claim 1, wherein the movable frame comprises a receiving portion, and the space in the receiving portion forms a receiving groove for partially receiving the elastic component. 3. The lifting mechanism of claim 1, wherein the lifting mechanism further comprises an inner slide rail, a ball bracket and an outer rail, wherein the inner slide is slidable relative to the outer rail, and the outer rail is fixed to the outer rail On the support frame, the inner slide rail is fixed on the movable frame, and the ball support is disposed between the inner slide rail and the outer guide rail for reducing friction between the inner slide rail and the outer guide rail. 4. The lifting mechanism of claim 1, wherein the lifting mechanism further comprises two guiding members fixed on the supporting frame, and the two guiding portions are respectively disposed on the two guiding members. 5. The elevating mechanism of claim 1, wherein at least one of the two guiding portions is curved or oblique. 6. The lifting mechanism according to item 5 of the patent application, wherein the two guiding parts 097128301 Form No. 1010101 Page 13 / Total 22 pages 1003477626-0 1361004 100 years. December is corrected for the day Shaped or slanted. 7. The lifting mechanism of claim 5, wherein the guiding portion is provided with a step. 8. The lifting mechanism of claim 1, wherein the elastic member is a compression spring. 1003477626-0 097128301 Form Number Α0101 Page 14 of 22