KR100748042B1 - Projection lifter - Google Patents

Abstract

The projection lift of the present invention is a fixed frame 110 is embedded in the passage 11 drilled in a predetermined size on the ceiling 10 and a pair of wires installed on the fixed frame 110 wound around the outer periphery A drive shaft 120 for raising and lowering the upper and lower portions 130, a driving means 121 for providing a rotational force to the drive shaft 120, and a wire 130 mounted on the drive shaft 120 with the projection 100a mounted thereon. The lower frame 140 is connected to the fixed pair, and the pair of guiding the lower frame 140 to be installed in the vertical direction of the fixed frame 110 and the lower frame 140 to fold in multiple stages to move up and down In the lift consisting of the link 150, the drive shaft 120 rotated by the drive means 121 is arranged in the longitudinal direction in the same direction as the communication space between the pair of links 150, fixed frame 110 ) To be completely received inside of the drive shaft 120 In order to guide the pair of wires 130 wound in opposite directions to each other in the principle of leverage, a pair of wires are coupled by coupling the rotating shafts 112 equipped with guide rollers 113 to correspond to both sides of the drive shaft 120. 130 is directly connected to the lower along the guide roller 113 is configured to be fixed to the front and rear sides of the lower frame 140 in the same longitudinal direction as the drive shaft 120, respectively.

Lift, projection, wire, motor, link, bracket, projection, elevating

Description

Projection lift {PROJECTION LIFTER}

1 is a perspective view showing the structure of a conventional projection lift.

Figure 2 is a perspective view showing the structure of the projection lift of the present invention.

Figure 3 is an enlarged perspective view of the upper part of the present invention.

Figure 4 is an enlarged perspective view of the lower part of the present invention.

Figure 5 is a perspective view showing that the expansion frame of the present invention is coupled.

[Explanation of symbols on the main parts of the drawings]

10: ceiling 11: passage

100: projection lift 100a: projection

110: fixed frame 111: expansion fixing member

111a: fixing hole 112: rotation axis

113: guide roller 114: fixing bracket

114a: Long hole 114b: Fastener

115: bracket 120: drive shaft

121: drive means 130: wire

140: lower frame 141: inner part

150: link 160: expansion frame

161: expansion fixing member 161a: fixing hole

170 housing 180 turnbuckle

The present invention relates to a projection lift, and more particularly, to provide a driving force to the lift installed vertically downward from the ceiling to minimize the shaking during the lifting of the projection lift when lifting the projection mounted on the lift up and down The present invention relates to a projection lift that achieves a beautiful storage effect by forming the same surface as the ceiling surface without exposing or protruding the lift device on the ceiling when storing the lift and the projection on the ceiling.

In general, a digital TV (TV) that provides a large screen is classified into LCD, LCD, DLP, and projection.

The dual projection TV is a display that converts color signals into light in advance and then enlarges and projects them through the lens. It is an integrated type in which a lens (projection unit) and a screen (screen unit) are installed in one case, and a lens (projection unit) and The screen may be divided into separate configurations.

As illustrated in FIG. 1, the link 150 having an X shape to be lowered up and down to the fixed frame 110 installed on the ceiling by mounting the lower frame 140 mounted on the upper surface of the projection 100a ( The lower frame 110 is connected to the bellows formula.

The inner side of the fixed frame 110 is installed in the same transverse direction as the folding direction of the link 150, but the drive shaft 120 wound the wire 130 in a pair on the outer circumference by the driving force of the motor (not shown) While selectively rotating or reversely rotating the wire 130, the wire 130 is lifted up and down by fixing the lower end of the wire 130 and the lower frame 140.

In addition, in order to fix the projection lift 100 to the ceiling (1) by installing a bracket 115 on the side of the fixing frame 100 through the projection 11 through the screw in the end of the passage (11) embedded in the ceiling ( Install 100).

However, the projection lift according to the prior art uses a wire 130 and a drive motor (not shown), and the conventional lift 100 embedded in the ceiling 10 has a lower portion of the wire 130 directly connected to the drive shaft 120. Since it is connected to the frame and is installed in the longitudinal direction in which the driving shaft 120 and the link 3 are folded in the same direction, there is a problem in that the lower panel 4 is shaken when the lift 100 is raised or lowered.

That is, the drive shaft 120 is installed in the fixed frame 110 in the same transverse direction as the folding direction of the link 150 folded in multiple stages and the position of the wire 130 wound on the drive shaft 120 is the link 150. By being coupled to the lower frame 140 to the fold side of the side, the wire 130 wound on the drive shaft 120 is fixed to the lower frame 140 directly when the drive shaft 120 is folded to fold the link 150. As a result, when the vibration generated by the rotation of the drive shaft 120 or the rotational force of the winding or unwinding of the wire 130 does not coincide in the same manner, a link for guiding the lower frame 140 swings in the left and right directions. Occurred.

In addition, the link 150 for guiding the lower frame 140 to move up and down, but the lower frame 140 can control the shaking in the front and rear direction, but can not control the shaking in the left and right direction mounted projection (100a) Double the shaking of the lower frame 140 to reduce the safety of the lift 100, there was a problem that hinders the smooth lift operation.

In addition, in order to install the wire 130 on the side of the fold of the link 150, the drive shaft 120 installed in the transverse direction in the fixed frame 110, both ends are partially exposed to the fixed frame 110 fixed frame When the 110 is installed on the ceiling, the work space is narrow and there is a problem of installation inconvenience.

In addition, when trying to solve this problem, there was a problem in that the passage 11 of the ceiling 10 into which the fixed frame 110 is embedded is to be drilled larger.

In particular, when installing the fixed frame 110 to the ceiling by using the "L" shaped bracket 115 installed on the side of the fixed frame 110 to the end of the passage 11 of the ceiling 10, the ceiling ( 10) the surface of the projection lift 100 is exposed to the outside in the plane, the installation state of the projection lift 100 on the ceiling 10 is not beautiful, the visual beauty of the interior space where the projection lift 100 is installed can not be guaranteed There was this.

In addition, when changing the fixed position of the projection by extending the lifting length of the projection lift 100, the plurality of links 150 are additionally connected in multiple stages, the fixing frame 110 by the length of the extended link 150 By being exposed in), there is a problem that the lower frame 140 is not coupled to the fixed frame 110 as closely as possible and prevents the lower frame 140 from fully descending.

Therefore, the main object of the present invention is to install the drive shaft installed in the fixed frame in the longitudinal direction and to fix the fixed position of the lower end of the wire wound on the drive shaft to be fixed to the lower frame to be longitudinally spaced apart from the fold of the link to the center of gravity of the lower frame It is to minimize the shaking phenomenon of the lower frame interlocking when the link is folded by shifting the position from the transverse direction to the longitudinal direction.

In addition, another object of the present invention is to allow the winding force to be guided by the guide roller is installed on the drive shaft to be wound or wound around the drive shaft to correspond to both sides of the drive shaft, the force of the load on the wire in the lever method By dividing the balance evenly and maximizing the balance of weight, the lifting operation in the vertical direction of the lower frame equipped with the projection can be performed smoothly and stably.

In addition, another object of the present invention extends by combining a plurality of links in multiple stages to increase the lifting height of the lift. The extension frame can be fixed in multiple stages in accordance with the length of the extended link at the bottom of the fixing frame so that the folded link can be easily and easily blocked from the outside, so that the extended link is not exposed to the outside and the link is protected. To receive it.

In addition, another object of the present invention is to use a bracket formed with a long hole so that the fixing frame of the projection lift can be installed on the upper surface inside the passageway of the ceiling so that the projection lift installed on the ceiling is not exposed to the outside to lift the ceiling It is to ensure that the beautifulness of the ceiling space can not be ascertained with the naked eye.

In addition, another object of the present invention is to bend the edge of the lower frame to be bent upward to the lower frame is inserted into the ceiling in the off (OFF) operation of the projection lift as close to the end of the fixed frame of the ceiling and the ceiling end close to the passage end By allowing the combination of the off-lift projection lift to be flush with the ceiling surface, it is possible to further increase the visual beauty of the projection lift.

In order to achieve the above object, the projection lift of the present invention includes a fixed frame which is installed and installed in a passage drilled to a predetermined size in the ceiling, and a drive shaft for elevating a pair of wires mounted on the outer circumferential edge of the fixed frame. And, the drive means for providing a rotational force to the drive shaft, the lower frame mounted on the projection and connected to the wire wound on the drive shaft, and installed in the vertical direction of the fixed frame and the lower frame to correspond to each other and folded in multiple stages In the lift consisting of a pair of links for guiding the lower frame to move up and down and a housing which is coupled to the lower portion of the fixed frame and embedded in the ceiling, a pair of links to the drive shaft rotated by the drive means Completely placed inside the fixed frame by placing in the longitudinal direction, the same direction as the space between A pair of wires are coupled to the lower frame along the guide rollers by engaging a rotating shaft equipped with guide rollers to correspond to both sides of the drive shaft so that the lead and the pair of wires wound in the opposite directions to the drive shaft can be guided by the lever principle. It is characterized in that the configuration is connected directly.

In addition, the upper and lower portions of the lower end of the fixed frame and the expansion frame having the same size as that of the fixed frame are combined in multiple stages to extend the length of the link extending to different ceiling heights. Allows the link to be positioned, and can be fixed in multiple stages to the fixed frame selectively in accordance with the extended link, the combination of the fixed frame and the expansion frame is horizontal to the bottom of the fixed frame and the top and bottom edges of the expansion frame Forming a fixing hole in the expansion fixing member that is partially connected to each side is characterized in that it is configured to be integrally coupled to the expansion frame to the lower portion of the fixing frame through the screw.

In addition, the upper surface of the fixing frame is provided with a plate-shaped fixing bracket formed with a long hole on one side to form a fastening hole to be coupled to the ceiling to the other side through the expansion fixing member, the fixing bracket is external when the fixing frame is fixed to the ceiling Characterized in that configured to prevent exposure to.

Then, by forming the inner portion curved corners while the upper edge of the lower frame is opened upward, the lower frame at the bottom of the fixed frame is configured to be introduced into the inner portion when lifting the projection lift upwards.

Hereinafter, the projection lift of the present invention with reference to the accompanying drawings in more detail.

Figure 2 is a perspective view showing the structure of the projection lift of the present invention, Figure 3 is an enlarged perspective view of the upper portion of the present invention, Figure 4 is an enlarged perspective view of the lower portion of the present invention, Figure 5 is an expansion frame of the present invention A perspective view showing the combined.

First, as shown in Figures 2 to 5, the projection lift of the present invention is fixed to the fixed frame 110, which is installed in the passage (11) perforated to a certain size on the ceiling 10, and the fixed frame 110 A drive shaft 120 for elevating a pair of wires 130 wound up and down around the outer periphery, a drive means 121 for providing rotational force to the drive shaft 120, and the projection 100a. The lower frame 140 connected to the wire 130 wound around the drive shaft 120 is installed to correspond to each other in the vertical direction of the fixed frame 110 and the lower frame 140, and is folded in multiple stages to move up and down. It consists of a pair of links 150 for guiding the lower frame 140 and the housing 170 is embedded in the ceiling 10 by being coupled to communicate with the lower portion of the fixed frame 110.

Here, the drive shaft 120 rotated by the drive means 121 is disposed in the longitudinal direction in the same direction as the space between the pair of links 150 to be completely accommodated in the interior of the fixed frame 110 and drive shaft 120 ) To couple the rotating shaft 112 equipped with the guide roller 113 to correspond to both sides of the drive shaft 120 so as to guide the pair of wires 130 wound from opposite sides to the lever principle. The wire 130 is connected directly to the lower frame 140 along the guide roller 113.

In addition, the upper and lower portions are opened at the lower end of the fixed frame 110, and the expansion frame 160 having the same size between the fixed frame 110 and the housing 170 is coupled in multiple stages to fit different ceiling 10 heights. The link can be positioned in the inner space of the expansion frame 160 coupled to the lower end of the fixed frame 110 by the extension length of the extended link 150, and optionally the fixed frame 110 and the housing ( 170, the expansion frame 160 can be fixed in multiple stages, and the combination of the fixed frame 110 and the expansion frame 160 is the bottom of the fixed frame 110 and the upper and lower edges of the expansion frame 160 Fixing holes 111a and 161a are formed in the expansion fixing members 111 and 161 which partially connect the sides to the horizontal to allow the expansion frame 160 to be integrally coupled to the lower portion of the fixing frame 110 through screws. .

In addition, a plate-shaped fixing in which a long hole 114a is formed at one side to be coupled to the upper surface of the fixing frame 110 through the expansion fixing member 111 and a fastening hole 114b is formed at the other side to be coupled to the ceiling 10. The bracket 114 is provided to prevent the fixing bracket 114 from being exposed to the outside when the fixing frame 110 is fixed to the ceiling 10.

Furthermore, the lower frame 140 is formed at the bottom of the fixed frame 110 when the projection lift 100 is elevated by forming an inner portion 141 having curved corners while opening the edge of the lower frame 140 upward. By allowing the inlet 141 to be drawn in, the projection lift is beautifully embedded in the ceiling.

In addition, the combination of the lower frame 140 and the bottom of the wire can be connected and fixed to the turnbuckle 180 to enable fine length extension through the turnbuckle 180 to correct the horizontality of the lower frame. .

Referring to the operation of the present invention configured as described above are as follows.

First, the fixing frame 110 of the projection lift 100 and the housing 170 are fixed in communication with each other and embedded in the passage 11 of the ceiling 10, and then the long hole 21 is formed on the upper surface of the passage 11. The bracket 20 is fixed to the upper surface of the expansion fixing member 111 of the fixing frame 10 by using a bolt and a nut, and a pair of wires 130 are disposed at the inner center of the fixing frame 10. The wound drive shaft 70 is installed in the longitudinal direction and completely accommodated inside the fixed frame 110.

Subsequently, the lower frame 140 is coupled to the lower portion of the link 150 while the upper link 150 of the articulated joint is coupled to both lower surfaces of the fixed frame 110 in the same direction as the drive shaft 120.

In addition, the wire 130 wound on the drive shaft 120 is positioned vertically downward and fixed to the front and rear sides of the lower frame 140, respectively, a pair of wires 130 by the rotation of the drive shaft 120 The lower frame 140 can be lifted up and down.

At this time, the wire 130 is guided by the guide roller 113 coupled to the rotating shaft 112 installed on both sides of the drive shaft 120, the lower frame on which the projection 100 is mounted according to the principle of the lever Since the weight balance of 140 can be guaranteed, the lower frame 140 can be lifted and lowered smoothly and without shaking.

In addition, when the height of the ceiling 10 is high when the projection lift 100 is installed, a plurality of links 150 are additionally added to the link 150 in order to maintain an appropriate height of the projection 100 that is lowered correspondingly. Will be combined.

At this time, when the projection lift 100 is lifted to the top to fold the link 150 while storing the inside of the fixed frame 110, the extended link 150 is not completely stored in the inside of the fixed frame 110. do.

In order to overcome this, the expansion frame 140 having the upper and lower openings coupled in multiple stages is coupled between the lower end of the fixed frame 110 and the upper end of the housing 170, but the expansion frame 140 is coupled to the fixed frame 110 and the housing 170. Selectively couples the expansion frame 160 to the lower end of the fixing frame 110 by the extended length of the link 150 through the fastening means to the fixing holes 111a and 161a of the expansion fixing members 111 and 161 formed at each corner. When the projection (100a) is lifted to the upper side is extended link 150 is stored in the interior of the expansion frame 140 so as not to be exposed to the outside to ensure a beautiful installation state after the combination of the projection lift 100 Make it happen.

In addition, when lowering the projection lift 100, the lower frame 140 may be embedded in the lower portion of the fixed frame 110 in the inner portion 141 formed to be curved upward on the edge of the lower frame 140. After lifting the projection lift 100 to the upper side to turn off the operating state, the apparatus of the projection lift 100 installed on the ceiling 10 is exposed to the outside and is not visually confirmed to the ceiling 10. To be beautifully installed on the ceiling 10 so as not to.

As described above, the projection lift of the present invention by installing the drive shaft to be installed in the fixed frame in the longitudinal direction by fixing the fixed position of the lower end of the wire wound on the drive shaft is fixed to the lower frame and longitudinally spaced apart from the folds of the link By changing the position of the center of gravity of the lower frame from the transverse direction to the longitudinal direction, the lower frame interlocking when the link is folded is effective to minimize the shaking phenomenon.

In addition, another effect of the present invention is to allow the winding force to be induced by the guide roller that is wound on the drive shaft to repeat the winding or unwinding installed on both sides of the drive shaft, thereby the force of the load on the wire in a lever manner By dividing the balance evenly and maximizing the balance of weight, the lifting operation in the vertical direction of the lower frame equipped with the projection can be performed smoothly and stably.

In addition, another effect of the present invention is to fit the length of the link extended to the bottom of the fixed frame to easily and easily block the extended folded link to the outside by combining a plurality of links in multiple stages to increase the lift height of the lift The expansion frame is fixed in multiple stages so that the protection of the link can be guaranteed by not exposing the extended link to the outside.

In addition, another effect of the present invention is that by using the bracket formed in the long hole it is possible to install the fixed frame of the projection lift on the upper surface inside the passage of the ceiling by preventing the projection lift installed on the ceiling to be exposed to the outside It is to ensure the beautifulness of the ceiling space so that the finishing condition of the shaft can not be confirmed with the naked eye.

In addition, another effect of the present invention is to bend the edge of the lower frame to be bent upward to the lower frame is inserted into the ceiling in the off (OFF) operation of the projection lift as close to the end of the fixed frame and the ceiling surface of the ceiling close to the end of the passage By allowing the combination of the off-lift projection lift to be flush with the ceiling surface, it is possible to further increase the visual beauty of the projection lift.

Claims (4)

Fixed frame embedded in the passage 11 perforated to a predetermined size on the ceiling (10) 110, a drive shaft 120 installed on the fixed frame 110 to elevate the pair of wires 130 wound on an outer circumference up and down, and drive means for providing rotational force to the drive shaft 120 ( 121, a lower frame 140 mounted on the projection 100a and connected to the wire 130 wound around the drive shaft 120, and in a vertical direction of the fixed frame 110 and the lower frame 140. A pair of links 150 for guiding the lower frame 140 to be moved up and down while being folded in multiple stages to correspond to each other and coupled to the lower portion of the fixing frame 110 to be embedded in the ceiling 10 In the lift consisting of the housing 170, The drive shaft 120 rotated by the drive means 121 is disposed in the longitudinal direction in the same direction as the space between the pair of links 150 so as to be completely received inside the fixed frame 110, and the drive shaft 120. In the winding of the pair of wires 130 to the one wound in the upward direction from the lower side of the drive shaft 120 and the other wound in the downward direction from the upper side of the drive shaft 120, In order to guide the guide 130 on the lever principle, a pair of wires 130 are coupled to the rotating shaft 112 equipped with the guide rollers 113 on both sides of the drive shaft 120 to form a lower frame along the guide rollers 113 ( 140) the projection lift characterized in that the configuration is connected directly. The method of claim 1, Upper and lower portions are opened at the lower end of the fixing frame 110 and the expansion frame 160 having the same size is fixed in multiple stages between the fixing frame 110 and the housing 170 to extend to different heights of the ceilings 10. The link can be positioned in the internal space of the expansion frame 160 coupled to the lower end of the fixing frame 110 by the extension length of the link 150, and selectively fixed frame 110 and the housing 170 in accordance with the extended link. The expansion frame 160 can be fixed in multiple stages, and the combination of the fixed frame 110 and the expansion frame 160 is at the bottom of the fixed frame 110 and the upper and lower edges of the expansion frame 160. Forming the fixing holes (111a, 161a) in the expansion fixing member (111, 161) that partially connected each side horizontally configured to be integrally coupled to the expansion frame 160 to the lower portion of the fixing frame 110 through the screw Characteristic Projection lift that. The method of claim 1, A plate-shaped fixing bracket having a long hole (114a) formed on one side to be coupled to the upper surface of the fixed frame 110 through the expansion fixing member 111 and the fastening hole (114b) to be coupled to the ceiling (10) Projection lift, characterized in that configured to prevent the fixed bracket 114 is exposed to the outside when the fixed frame 110 is fixed to the ceiling (10) having a (114). The method of claim 1, The lower frame 140 is inserted at the bottom of the fixed frame 110 when the projection lift 100 is elevated by forming an inner portion 141 having curved corners while opening the edge of the lower frame 140 upward. Projection lift, characterized in that configured to be drawn into the portion (141).

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