Telescopic column for x-ray imaging apparatus

Abstract

The telescopic column for X-ray photographing device includes a main column, a sub-column arranged on one side of the main column in a liftable manner, and a weight compensation part arranged on the other side of the main column for compensating the weight of the sub-column, the weight compensation part includes a cam for changing the winding radius of the metal wire according to the lifting height of the sub-column, and an elastic part which is extended and contracted with the rotation of the cam to provide elastic force in a manner of compensating the weight of the sub-column.

Description

Technical Field

[0001] This invention relates to a telescopic column for an X-ray imaging device that can be easily raised and lowered by uniform force. Background Technology

[0002] Recently, in cases where X-ray imaging is required for seriously ill patients who are unable to move easily or during surgery, mobile X-ray imaging devices are often moved to the necessary location for imaging, eliminating the need for patients to go directly to the X-ray room. Examples of mobile X-ray imaging devices have been disclosed in KR 10-2011-0062397A and KR 10-2012-0095460A.

[0003] Figure 1 This is a structural diagram of an existing mobile X-ray imaging device. The mobile X-ray imaging device may include: a body 1, equipped with a display 27; a column 2, vertically mounted on the body 1; an arm 3, mounted on the column 2; and an X-ray source 4, mounted on the arm 3. The column 2 may include a main column 5 and sub-columns 6, and the arm 3 may be composed of multiple unit arms 7, 8, and 9 arranged in a multi-stage telescopic manner. To ensure safety during movement, the lengths of the column 2 and arm 3 can be shortened; during imaging, the lengths of the column 2 and arm 3 can be extended to position the X-ray source 4 appropriately.

[0004] Existing mobile X-ray imaging devices are equipped with separate drive sources for extending or shortening the length and height of the column 2. This results in a problem where the user has difficulty quickly moving the X-ray source 4 to the desired position because the column 2 cannot be moved quickly.

[0005] As another example, the length of column 2 can be manually extended or shortened, or a counterweight can be used to compensate for the weight of arm 3 and sub-column 6, so that arm 3 and sub-column 6 can be raised and lowered with very little force. However, when the weight is compensated by a counterweight or the like, there is a problem that the mobility decreases due to the increase in the total weight of the mobile X-ray imaging device. Summary of the Invention

[0006] Technical issues

[0007] One object of the present invention is to provide a telescopic column for an X-ray imaging device that can be quickly and easily moved to the desired position manually, even without a separate drive source or weight counterweight.

[0008] Another object of the present invention is to provide a telescopic column for an X-ray imaging apparatus that can compensate for the weight of the arm and sub-column by utilizing the elastic force of the elastic member.

[0009] Another object of the present invention is to provide a telescopic column for an X-ray imaging apparatus that can raise and lower the arm and sub-column with a uniform force in a manner independent of the elastic force variation of the elastic member based on the lifting height of the arm and sub-column.

[0010] Technical solution

[0011] To achieve the above objectives, the present invention provides a telescopic column for an X-ray imaging device, comprising: a main column; a sub-column disposed on one side of the main column in a height-adjustable manner; and a weight compensation unit disposed on the other side of the main column for compensating for the weight of the sub-column. The weight compensation unit includes: a cam for changing the radius of the metal wire winding according to the height of the sub-column; and an elastic member that extends and retracts with the rotation of the cam to provide elastic force in order to compensate for the weight of the sub-column.

[0012] According to one feature, the weight compensation unit may include: a first fixed pulley disposed on the main column; a movable pulley disposed in a manner that allows it to be raised and lowered relative to the first fixed pulley; a first metal wire, one end of which is attached to the main column, and the other end of which is attached to the sub-column via the movable pulley and the first fixed pulley; a cam unit disposed in a manner that allows it to rotate in conjunction with the raising and lowering of the movable pulley; and an elastic member that extends and retracts in conjunction with the rotation of the cam unit to provide elastic force to the sub-column.

[0013] According to another feature, the weight compensation part may include: a second metal wire, one end of which is attached to one side of the movable pulley and the other end of which is wound around one side of the cam unit; and a third metal wire, one end of which is attached to the elastic member and the other end of which is wound around the other side of the cam unit.

[0014] According to another feature, the cam unit may include: a cam that causes the winding radius of the second metal wire to change when rotated; and a cam pulley disposed on one side of the cam in a manner that rotates integrally with the cam, for winding the third metal wire.

[0015] According to another feature, the torque of the cam that rises and falls based on the aforementioned movable pulley can act as a reaction torque on the torque of the cam pulley that extends and retracts based on the aforementioned elastic member.

[0016] According to another feature, the aforementioned sub-column may include: a first sub-column, which is installed on one side of the main column in a way that allows it to be raised and lowered; and a second sub-column, which is installed on one side of the first sub-column in a way that allows it to be raised and lowered.

[0017] According to another feature, the present invention may further include a linkage mechanism that is linked to the lifting of the first sub-column to cause the second sub-column to lift. The linkage mechanism may include: a second fixed pulley disposed at the upper end of the first sub-column; and a fourth metal wire, one end of which is connected to the main column and the other end of which is connected to the second sub-column via the second fixed pulley.

[0018] According to another feature, the weight compensation part may include a third fixed pulley disposed on one side of the elastic member, and the second metal wire may be wound around one side of the cam unit via the third fixed pulley.

[0019] According to another feature, the aforementioned sub-column may include: a first sub-column, which is vertically and vertically disposed on one side of the aforementioned main column; and a second sub-column, which is vertically and vertically disposed on one side of the aforementioned first sub-column. The telescopic column for the X-ray imaging device of the present invention may also include a linkage mechanism that is linked to the vertical movement of the aforementioned first sub-column to cause the aforementioned second sub-column to move up and down. The linkage mechanism may include: a fourth fixed pulley disposed at the upper end of the aforementioned first sub-column; and a fourth metal wire, one end of which is connected to one side of the aforementioned main column, and the other end of which is connected to one side of the aforementioned second sub-column via the aforementioned fourth fixed pulley.

[0020] The effects of the invention

[0021] The telescopic column for X-ray imaging apparatus according to the present invention, by utilizing the elastic force of the elastic component to compensate for the weight of the arm and sub-column, allows the length of the column to be quickly and conveniently extended or shortened manually, even without a separate drive source or weight counterweight. Attached Figure Description

[0022] Figure 1 A structural diagram of an existing mobile X-ray imaging device;

[0023] Figure 2 and Figure 3 This is a structural diagram of the telescopic column for the X-ray imaging device according to the first embodiment of the present invention;

[0024] Figure 4 The diagram shows a cam curve calculated according to a first embodiment of the present invention;

[0025] Figure 5 This is a side view of the cam according to the first embodiment of the present invention;

[0026] Figure 6 and Figure 7 This is a perspective view of the telescopic column according to the first embodiment of the present invention;

[0027] Figure 8 This is a side view of the telescopic column according to the first embodiment of the present invention;

[0028] Figure 9This is a front view of the telescopic column according to the first embodiment of the present invention;

[0029] Figure 10 This is a rear view of the telescopic column according to the first embodiment of the present invention;

[0030] Figure 11 This is an enlarged view showing the sliding connection between the main column and the first sub-column according to the first embodiment of the present invention;

[0031] Figure 12 This is an enlarged view showing the sliding connection between the first sub-pillar and the second sub-pillar in the first embodiment of the present invention;

[0032] Figure 13 This is a partially enlarged view of the main column of the weight compensation unit according to the first embodiment of the present invention;

[0033] Figure 14 This is an exploded perspective view of the cam unit according to the first embodiment of the present invention;

[0034] Figure 15 and Figure 16 This is a structural diagram of the telescopic column for the X-ray imaging device according to the second embodiment of the present invention;

[0035] Figure 17 and Figure 18 This is a perspective view of the telescopic column according to the second embodiment of the present invention;

[0036] Figure 19 This is a side view of the telescopic column according to the second embodiment of the present invention;

[0037] Figure 20 This is a front view of the telescopic column according to the second embodiment of the present invention;

[0038] Figure 21 This is a rear view of the telescopic column according to the second embodiment of the present invention;

[0039] Figure 22 This is an enlarged view showing the sliding connection between the main column and the first sub-column according to the second embodiment of the present invention;

[0040] Figure 23 This is an enlarged view showing the sliding connection between the first sub-pillar and the second sub-pillar in the second embodiment of the present invention;

[0041] Figure 24 This is a partially enlarged view of the main column of the weight compensation unit according to the second embodiment of the present invention;

[0042] Figure 25 This is a perspective view of the cam unit according to the second embodiment of the present invention;

[0043] Figure 26This is a partial enlarged view of the first metal wire connecting the main column and the first sub-column according to a second embodiment of the present invention. Detailed Implementation

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are only intended to enable those skilled in the art to easily implement the present invention through detailed description, and the scope of protection of the present invention is not limited thereto. Moreover, in the description of various embodiments of the present invention, structural elements with the same technical features are given the same reference numerals.

[0045] The telescopic column for the X-ray imaging apparatus of the present invention includes: a main column; a sub-column, which is configured to be able to rise and fall relative to the main column; and a weight compensation unit, which compensates for the weight of the sub-column so that the user can easily raise and lower the sub-column with very little force. Furthermore, the weight compensation unit includes a cam unit provided with a cam and a cam pulley, so that the sub-column can be raised and lowered with a uniform force regardless of changes in the height of the sub-column. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0046] Figures 2 to 14 This is a diagram of a telescopic column for an X-ray imaging device according to the first embodiment of the present invention.

[0047] like Figure 2 and Figure 3 As shown, the telescopic column 100 for X-ray imaging apparatus includes: a main column 200; a sub-column 300, which is arranged to be raised and lowered relative to the main column 200; and a weight compensation unit 400 for compensating for the weight of the sub-column 300.

[0048] The weight compensation unit 400 includes: a first fixed pulley 410 and a movable pulley 420, disposed on the main column 200; a first metal wire 430 for connecting the main column 200 and the sub-column 300; a cam 450 for changing the winding radius of the second metal wire 480 connected to the movable pulley 420 according to the lifting height of the sub-column 300; and an elastic member 470 that extends and retracts with the rotation of the cam 450, providing elastic force to the sub-column 300 through the third metal wire 490.

[0049] According to a first embodiment of the present invention, as the weight of the sub-column 300 is compensated by the weight compensation unit 400, the user can raise and lower the sub-column 300 at a predetermined speed with very little force. Furthermore, when the sub-column 300 is raised or lowered, the weight compensation unit 400 can apply a uniform force in a manner independent of the height of the sub-column 300 to raise and lower the sub-column 300 at a predetermined speed.

[0050] The main column 200 can be vertically mounted on the main body 1 of the mobile X-ray imaging device (see reference). Figure 1The internal structure includes a space for a weight compensation unit 400, which comprises multiple pulleys and metal wires. In this configuration, the main column 200 can be rotatably mounted on the main body 1 of the mobile X-ray imaging device.

[0051] The sub-column 300 is mounted on one side of the main column 200 in a height-adjustable manner. As an example, a sliding track (not shown) can be formed on one side of the main column 200, and multiple rollers (not shown) can be installed on the sub-column 300 in a manner that allows it to slide vertically along the sliding track of the main column 200.

[0052] On the other hand, an X-ray source 4 is provided at the end (see reference). Figure 1 Arm 3 (refer to) Figure 1 The arm can be mounted on one side of the sub-column 300 in a height-adjustable manner. In this case, the arm can be formed in a multi-stage telescopic manner, and the weight compensation unit 400 compensates for the weight of the sub-column 300, which includes the X-ray source 4 and the arm 3.

[0053] The weight compensation unit 400 may include: a first fixed pulley 410, which is rotatably disposed at the lower end of the main column 200; a movable pulley 420, which is vertically and vertically disposed at the upper part of the first fixed pulley 410; and a first metal wire 430, which connects the main column 200 and the sub-column 300 through the first fixed pulley 410 and the movable pulley 420.

[0054] In this case, the number of the first fixed pulley 410 and the movable pulley 420 can be appropriately selected as needed. As an example, a pair of movable pulleys 420 can be arranged in parallel above a first fixed pulley 410. One end of the first metal wire 430 can be attached to one side of the main column 200, and the other end can be attached to the sub-column 300 after being wound around the movable pulley 420 and the first fixed pulley 410.

[0055] As the first metal wire 430 passes through the first fixed pulley 410 and the movable pulley 420 to connect the main column 200 and the sub-column 300, when the sub-column 300 rises and falls relative to the main column 200, the movable pulley 420 will rise and fall relative to the first fixed pulley 410.

[0056] In this case, the raising and lowering of the sub-column 300 can be manually operated by the user. The weight compensation unit 400 can make the sub-column 300 easily raise and lower at the specified speed with very little force, even if the weight of the sub-column 300 is affected.

[0057] For this purpose, an elastic member 470 for providing elastic force to the sub-column 300 is provided in the space of the main column 200. The elastic member 470 is configured to extend and retract in conjunction with the lifting and lowering of the movable pulley 420, thereby compensating for the weight of the sub-column 300 by providing elastic force to the sub-column 300 together with the movable pulley 420. For example, when the elastic force provided by the elastic member 470 is balanced with the weight of the sub-column 300, the user can easily raise and lower the sub-column 300 at a specified speed with very little force.

[0058] Although a retractable tension spring is shown as an example of the elastic member 470 in the accompanying drawings, this is only one embodiment, and various forms of elastic members 470, such as gas springs or torsion springs, can be used to provide elastic force as needed.

[0059] On the other hand, the elastic force provided from the elastic member 470 can be changed according to the raising and lowering of the sub-post 300. For example, when a tension spring is used as the elastic member 470, the more the sub-post 300 is lowered, the more the tension spring is stretched, resulting in an increase in elastic force. Consequently, the force required by the user to pull down the sub-post will gradually increase.

[0060] According to a first embodiment of the present invention, a cam unit 440 is provided that is capable of raising and lowering the sub-column 300 with a uniform force in a manner independent of changes in the lifting height of the sub-column 300.

[0061] The cam unit 440 can be configured to rotate in conjunction with the lifting of the movable pulley 420. For example, one end of the second metal wire 480 can be attached to one side of the movable pulley 420, and the other end can be wound around one side of the cam unit 440.

[0062] Furthermore, the elastic member 470 can be configured to extend and retract in conjunction with the rotation of the cam unit 440. For example, one end of the third metal wire 490 can be attached to the elastic member 470, and the other end can be attached to the other side of the cam unit 440.

[0063] More specifically, the cam unit 440 may include: a cam 450 that, upon rotation, causes a change in the winding radius of the second metal wire 480; and a cam pulley 460, disposed on one side of the cam 450 in a manner that rotates integrally with the cam 450, for winding the third metal wire 490. As an example, a pair of cam pulleys 460 are formed by distributing a cam pulley on each side of the cam 450, and the pair of third metal wires 490 extending parallel to the upper end of the elastic member 470 can be wound onto the pair of cam pulleys 460 respectively.

[0064] In this situation, when the sub-column 300 rises, the tension spring contracts, causing the cam pulley 460 to rotate in a manner that unwinds the third metal wire 490. In this case, the cam pulley 460 and cam 450 rotate together, causing the second metal wire 480 to wind around the cam 450. The second metal wire 480 pulls the movable pulley 420 upwards, causing the movable pulley 420 to move above the first fixed pulley 410.

[0065] Conversely, when the sub-column 300 descends, the sub-column 300 and the movable pulley 420 descend together, causing the cam 450 to rotate in a manner that unwinds the second metal wire 480. In this case, the cam 450 and the cam pulley 460 rotate together to cause the third metal wire 490 to wind around the cam pulley 460, through which the tension spring is stretched.

[0066] The cam 450 forms a cam profile in such a way that the winding radius of the second metal wire 480 changes when it rotates. This is so that the torque of the cam pulley 460 based on the extension and retraction of the elastic member 470 and the torque of the cam 450 based on the lifting and lowering of the movable pulley 420 interact to form a reaction torque, thereby enabling the sub-column 300 to be raised and lowered with a uniform force independent of the height of the sub-column 300.

[0067] Figure 4 The diagram illustrates the cam curve of the first embodiment of the present invention, calculates the spring force of the tension spring based on the rotation angle of the cam pulley 460 and the torque of the cam pulley 460, calculates the radius of the cam 450 from the torque of the cam 450 used for compensation, and is a graph showing the cam curve based on the rotation angle of the cam pulley 460.

[0068] Reference Figure 5 The cam 450 has a shaft hole 451 formed on one side for inserting a rotating shaft, and its radius gradually increases in one direction along the circumference within a predetermined angle range. It also includes: a curved surface 452, which is spirally formed within a predetermined angle range corresponding to the lifting range of the sub-column 300; and a straight surface 453, formed at one end of the spiral curved surface 452 along the rotation axis direction. Furthermore, a second metal wire fixing portion 454 for fixing the other end of the second metal wire 480 is formed on one side of the straight surface 453. Figure 5 Not shown in, but shown in Figure 14 A first winding groove 456 for winding the second metal wire 480 is formed on the helical curved surface 452 of the cam 450. Figure 5 Not shown in, but shown in Figure 14 ).

[0069] Therefore, when the sub-pillar 300 descends, the tension spring is stretched, increasing the torque of the cam pulley 460. At this time, the winding radius of the second metal wire 480 of the cam 450 gradually increases, thus increasing the torque of the cam 450. Conversely, when the sub-pillar 300 rises, the tension spring contracts, decreasing the torque of the cam pulley 460. The winding radius of the second metal wire 480 of the cam 450 gradually decreases, thus decreasing the torque of the cam 450.

[0070] In this case, the torque of cam 450 will act as a reaction torque on the torque of cam pulley 460, thereby compensating for the difference between the spring force and the weight of sub-column 300. The user can raise and lower the sub-column 300 with a uniform force in a manner independent of the height of the sub-column 300 or the extension length of the spring.

[0071] The telescopic column 100 for an X-ray imaging device includes: a main column 200; a sub-column 300, which is vertically adjustable and mounted on one side of the main column 200; and a weight compensation unit 400, mounted on the main column 200 to compensate for the weight of the sub-column 300. Figures 6 to 10 Learn more in detail.

[0072] The lower end of the main column 200 can be attached to a support plate 210 for supporting the main column 200, which can be attached to the body 1 of the mobile X-ray imaging device. Although a square support plate 210 is shown in the figures, this is only one example, and a circular support plate 210 can also be rotatably attached to the body 1 of the mobile X-ray imaging device.

[0073] The main column 200 includes: a pair of main frames 220, vertically arranged at predetermined intervals along the width direction of the support plate 210; an upper frame 230, attached to the upper end of the pair of main frames 220; a support frame 240, arranged parallel to the main frames 220 at predetermined intervals behind them; and a connecting frame 250, used to attach the upper end of the support frame 240 to the rear end of the main frames 220. As an example, the connecting frame 250 can be formed by combining four unit frames into a square shape.

[0074] The main frame 220 serves to guide the lifting direction of the sub-column 300. Multiple pulleys, cam units 440, and elastic components 470 that constitute the weight compensation part 400 are arranged in the space between the main frame 220 and the support frame 240.

[0075] On the other hand, the sub-column 300 may include: a first sub-column 310, which is provided in a liftable manner on one side of the main column 200; and a second sub-column 320, which is provided in a liftable manner on one side of the first sub-column 310.

[0076] The first sub-column 310 is mounted on the front surface of the main column 200 in a height-adjustable manner, and includes: a pair of sub-frames 311, which are attached to the front surface of a pair of main frames 220 in a manner that allows them to slide vertically; and a pair of movable frames 312, which are arranged parallel to the sub-frames 311 on the inner rear side of the pair of sub-frames 311. In this case, the pair of sub-frames 311 and the pair of movable frames 312 are integrated into one unit by cover frames 313 attached to the upper and lower ends respectively.

[0077] The second sub-column 320 is mounted on the front surface of the first sub-column 310 in a height-adjustable manner. The second sub-column 320 includes: a pair of lifting frames 321, each attached to the inner side of the pair of sub-frames 311 in a vertically sliding manner; a lifting plate 322, mounted on the front surface of the pair of lifting frames 321 and positioned in front of the sub-frames 311; and an arm support bracket 323, attached to the front surface of the lifting plate 322. Although not shown, the arm support bracket 323 can be attached to an arm 3, which is capable of multi-stage telescopic movement and has an X-ray source 4 at its end.

[0078] The following is for reference Figure 11 and Figure 12 The lifting structure of the first sub-column 310 and the second sub-column 320 of the main column 200 is described in detail.

[0079] like Figure 11 As shown, the first sub-column 310 has a plurality of first rollers 314 disposed on the outer side of a pair of movable frames 312. The first rollers 314 are slidably engaged with a first groove 221 formed on the inner side of the main frame 220 of the main column 200. Therefore, when the first sub-column 310 rises or falls relative to the main column 200, the first rollers 314 of the movable frames 312 will move along the first groove 221 of the main frame 220.

[0080] like Figure 12 As shown, the second sub-column 320 has a plurality of second rollers 324 disposed on the outer side of a pair of lifting frames 321. The second rollers 324 are slidably engaged with a second groove (not shown) formed on the inner side of the sub-frame 311 of the first sub-column 310. Therefore, when the second sub-column 320 rises or falls relative to the first sub-column 310, the second rollers 324 of the lifting frames 321 will move along the second groove of the sub-frame 311.

[0081] Figure 13 To show a partially enlarged view of the main column of the weight compensation section, the support frame is omitted for ease of explanation. As shown, a first fixed pulley 410 is provided at the lower end of the main column 200. The first fixed pulley 410 is rotatably supported by a support bracket 411 that is coupled to the upper side of the support plate 210.

[0082] Furthermore, a cam unit 440 is rotatably mounted on the connecting frame 250 at the upper end of the support frame 240. For example, the cam unit 440 can be rotatably supported by a rotation axis that runs through the connecting frame 250 in the front-rear direction.

[0083] like Figure 14 As shown, the cam unit 440 includes: a cam 450 formed in a manner that allows for a change in the winding radius; and one or more cam pulleys 460 disposed on one side of the cam 450 in a manner that allows for integral rotation with the cam 450. The accompanying drawings show an example where a pair of cam pulleys 460 are formed by combining one cam pulley on each side of the cam 450. The cam 450 and the cam pulleys 460 can be formed integrally; alternatively, the cam 450 and the cam pulleys 460 can be formed from separate components and then combined in a manner that allows for integral rotation.

[0084] As a reference Figure 5 The cam 450 generally includes: a curved surface 452, which forms a spiral shape within a predetermined angle range corresponding to the lifting range of the column 300; and a straight surface 453, which is formed at one end of the spiral curved surface 452 along the direction of rotation. Furthermore, a second metal wire fixing portion 454 with a groove 455 is formed on one side of the straight surface 453 to fix the other end of the second metal wire 480, and a first winding groove 456 for winding the second metal wire 480 is formed on the spiral curved surface 452 of the cam 450.

[0085] Furthermore, a second winding groove 461 is formed along the outer peripheral surface of the cam pulley 460, and a third metal wire fixing part 462 is formed on one side of the cam pulley 460. The third metal wire fixing part 462 is coupled to one end of the third metal wire 490, so that when the cam pulley 460 rotates, the third metal wire 490 will be wound around the second winding groove 461 of the cam pulley 460.

[0086] Re-reference Figure 13 A pair of movable pulleys 420 are provided at the lower part of the cam unit 440 in a way that allows it to be raised, lowered, and rotated. For example, the lower end of the "∩"-shaped lifting bracket 421 can be connected to the rotation axis of the pair of movable pulleys 420.

[0087] In this configuration, the upper end of the lifting bracket 421 engages with one end of the second metal wire 480, and the other end of the second metal wire 480 engages with the second metal wire fixing part 454 via the first winding groove 456 of the cam 450. Therefore, when the movable pulley 420 is raised or lowered, the second metal wire 480 will either be wound around the cam 450 or unwound from the cam 450.

[0088] A first fixed pulley 410 is provided at the lower part of the movable pulley 420. As an example, the first fixed pulley 410 can be rotatably supported by the upper end of a "U"-shaped support bracket 411 that is combined with the upper side of the support plate 210.

[0089] The first metal wire 430 is connected between the first fixed pulley 410 and a pair of movable pulleys 420. One end of the first metal wire 430 is connected to one side of the main column 200, and the other end is connected to one side of the first sub-column 310 via the pair of movable pulleys 420 and the first fixed pulley 410.

[0090] For this purpose, the first fastener 222 is attached to one side of the lower end of the main frame 220 and protrudes rearward, the fastener bracket 315 is attached in a way that connects a pair of movable frames 312 laterally, and the second fastener 316 is attached to the center of the fastener bracket 315 and protrudes rearward.

[0091] In this case, one end of the first metal wire 430 is connected to the first fixing member 222, and the other end is connected to the second fixing member 316 via a pair of movable pulleys 420 and the first fixed pulley 410. Therefore, the main column 200 and the sub-column 300 are connected by the first metal wire 430.

[0092] An elastic member 470 is provided on one side of the first fixed pulley 410. In this embodiment, a tension spring is shown as the elastic member 470, but this is only one example. Various forms of elastic members 470 that provide elastic force, such as gas springs or torsion springs, can be used as needed.

[0093] The elastic member 470 is connected to a pair of cam pulleys 460 via a pair of third metal wires 490. For example, a third fixing member 471 can be provided at the upper end of the elastic member 470, and one end of each pair of third metal wires 490 can be attached to both ends of the third fixing member 471. The other end of the third metal wire 490 is connected to the third metal wire fixing part 462 through the second winding groove 461 of the cam pulley 460. Therefore, when the cam pulley 460 rotates, the third metal wire 490 will be wound around the cam pulley 460.

[0094] On the other hand, according to a first embodiment of the present invention, a linkage mechanism may be included to link the lifting and lowering of the first sub-column 310 and the second sub-column 320, with reference to... Figure 7 and Figure 9 Let me explain this.

[0095] Reference Figure 7 and Figure 9A second fixed pulley 500 is rotatably installed at the upper end of the first sub-column 310. The second fixed pulley 500 is rotatably supported by a rotating shaft located at the upper end of a pair of transversely connected movable frames 312. The fourth metal wire 510 passes through the second fixed pulley 500 to connect the main column 200 and the second sub-column 320.

[0096] In this case, a fourth fastener 223 is attached to the lower part of the main column 200 in a manner that connects a pair of main frames 220 laterally. The fourth fastener 223 is attached to one end of the fourth metal wire 510. The other end of the fourth metal wire 510 is attached to a fifth fastener 325 attached to the lower end of the lifting plate 322 of the second sub-column 320.

[0097] In this case, a pair of winding grooves can be formed on the second fixed pulley 500 at predetermined intervals, and a pair of fourth metal wires 510 can be connected to the fourth fixing member 223 of the main column 200 and the fifth fixing member 325 of the second sub-column 320 respectively by setting one in each winding groove.

[0098] The following is a detailed description of the lifting and lowering action of the telescopic column 100 for the X-ray imaging device according to the first embodiment of the present invention.

[0099] With the first sub-column 310 and the second sub-column 320 raised to their maximum relative to the main column 200, if a user presses down on the second sub-column 320 to lower it, the fourth metal wire 510, one end of which is connected to the lifting plate 322 of the second sub-column 320, will press the second fixed pulley 500 to lower the first sub-column 310. When the first sub-column 310 lowers, the movable pulley 420 descends towards the first fixed pulley 410 via the first metal wire 430, the second metal wire 480 wound around the cam 450 is unwound, and the cam 450 rotates. The cam pulley 460, which rotates together with the cam 450, winds around the third metal wire 490 to stretch the elastic member 470.

[0100] Conversely, with the first sub-column 310 and the second sub-column 320 lowered to their maximum relative to the main column 200, if the user raises the second sub-column 320, the first sub-column 310 will rise along with the second sub-column 320. In this case, the third metal wire 490 wound around the cam pulley 460 is unwound by the elastic restoring force of the elastic member 470, causing the cam pulley 460 to rotate. Furthermore, the cam 450, which rotates together with the cam pulley 460, rotates and winds the second metal wire 480 to raise the movable pulley 420, thereby raising the first sub-column 310.

[0101] In this situation, the elastic force of the elastic component 470 compensates for the weight of the first sub-pillar 310 and the second sub-pillar 320, allowing the user to easily raise and lower the first sub-pillar 310 and the second sub-pillar 320 with very little force. Furthermore, when the elastic force of the elastic component 470 changes, the torque of the cam 450 acts as a reaction torque on the torque of the cam pulley 460, thereby compensating for the difference between the elastic force of the elastic component 470 and the weight of the first sub-pillar 310 and the second sub-pillar 320, as explained in the previous section.

[0102] On the other hand, in the above embodiment, a linkage telescopic column in which the second sub-column 320 rises and falls in a manner linked to the rise and fall of the first sub-column 310 was described as an example. However, the weight compensation part 400 of the first embodiment of the present invention, which includes the cam 450 and the elastic member 470, can also be applied to a non-linkage telescopic column configured such that the first sub-column 310 rises and falls after the second sub-column 320 has finished rising and falling, or the second sub-column 320 rises and falls after the first sub-column 310 has finished rising and falling.

[0103] Figures 15 to 26 This is a diagram of a telescopic column for an X-ray imaging apparatus according to a second embodiment of the present invention. The telescopic column 1000 for the X-ray imaging apparatus includes: a main column 2000; a sub-column 3000, which is arranged to be able to be raised and lowered relative to the main column 2000; and a weight compensation unit 4000 for compensating for the weight of the sub-column 3000.

[0104] The weight compensation unit 4000 includes: a first fixed pulley 4100 and a movable pulley 4200, disposed on the main column 2000; a first metal wire 4300 for connecting the main column 2000 and the sub-column 3000; a cam 4410 for changing the winding radius of the metal wire according to the lifting height of the sub-column 3000; and an elastic member 4500 that extends and retracts with the rotation of the cam 4410 to provide elastic force.

[0105] The main column 2000 can be vertically mounted on the main body 1 of the mobile X-ray imaging device (see reference). Figure 1 The interior has a space for a weight compensation section 4000 that can accommodate multiple pulleys and metal wires.

[0106] The sub-column 3000 is mounted on one side of the main column 2000 in a height-adjustable manner. As an example, a sliding track (not shown) can be formed on one side of the main column 2000, and multiple rollers can be installed on the sub-column 3000 in a manner that allows it to slide along the sliding track in the vertical direction.

[0107] On the other hand, an X-ray source 4 is provided at the end (see reference). Figure 1 Arm 3 (refer to) Figure 1It can be installed on one side of the sub-column 3000 in a height-adjustable manner. In this case, the arm can be formed in a multi-stage telescopic manner, and the weight compensation unit 4000 compensates for the weight of the sub-column 3000, which includes the X-ray source and the arm.

[0108] The weight compensation unit 4000 may include: a first fixed pulley 4100, which is rotatably disposed at the upper end of the main column 2000; a movable pulley 4200, which is vertically and vertically disposed at the lower part of the first fixed pulley 4100; and a first metal wire 4300, which connects the main column 2000 and the sub-column 3000 through the first fixed pulley 4100 and the movable pulley 4200.

[0109] In this case, the number of the first fixed pulley 4100, the movable pulley 4200, and the first metal wire 4300 can be appropriately selected as needed. Furthermore, as an example, one end of the first metal wire 4300 can be connected to the upper end of the main column 2000, and the other end can be connected to the sub-column 3000 after being wound several times around the movable pulley 4200 and the first fixed pulley 4100.

[0110] As the first metal wire 4300 passes through the first fixed pulley 4100 and the movable pulley 4200 to connect the main column 2000 and the sub-column 3000, when the sub-column 3000 rises and falls relative to the main column 2000, the movable pulley 4200 will rise and fall relative to the first fixed pulley 4100.

[0111] In this case, the raising and lowering of the sub-column 3000 can be manually operated by the user. The weight compensation unit 4000 can easily raise and lower the sub-column 3000 with very little force, even with the influence of the weight of the sub-column 3000.

[0112] For this purpose, an elastic member 4500 for providing elastic force to the sub-column 3000 is provided in the space of the main column 2000. The elastic member 4500 is provided in a manner that allows for lifting and extending according to the moving pulley 4200, and by providing elastic force to the sub-column 3000 together with the moving pulley 4200, the weight of the sub-column 3000 is compensated. For example, when the elastic force provided by the elastic member 4500 is balanced with the weight of the sub-column 3000, the user can easily raise and lower the sub-column 3000 with a very small force.

[0113] On the other hand, the elastic force provided by the elastic member 4500 can be changed according to the raising and lowering of the sub-column 3000. For example, when a tension spring is used as the elastic member 4500, the more the sub-column 3000 is lowered, the more the tension spring is stretched, resulting in an increase in elastic force. Consequently, the force required by the user to pull down the sub-column will gradually increase.

[0114] This invention provides a cam unit 4400 capable of raising and lowering the sub-column 3000 with a uniform force in a manner independent of changes in the lifting height of the sub-column 3000. The cam unit 4400 is configured to rotate in conjunction with the lifting of a movable pulley 4200. For example, one end of a second metal wire 4600 can be coupled to one side of the movable pulley 4200, and the other end can be wound around one side of the cam unit 4400. In this case, if necessary, the second metal wire 4600 can be wound around one side of the cam unit 4400 via a third fixed pulley 4700 disposed on one side of the elastic member 4500.

[0115] Furthermore, the elastic member 4500 can be configured to extend and retract in conjunction with the rotation of the cam unit 4400. For example, one end of the third metal wire 4800 can be coupled to the elastic member 4500, and the other end can be coupled to the other side of the cam unit 4400.

[0116] More specifically, the cam unit 4400 may include: a cam 4410 that causes the winding radius of the second metal wire 4600 to change when rotated; and a cam pulley 4430 disposed on one side of the cam 4410 in a manner that rotates integrally with the cam 4410 for winding the third metal wire 4800.

[0117] In this situation, when the sub-column 3000 rises, the tension spring contracts, causing the cam pulley 4430 to rotate in a manner that unwinds the third metal wire 4800. In this situation, the cam pulley 4430 and cam 4410 rotate together, causing the second metal wire 4600 to wind around the cam 4410, and the second metal wire 4600 pulls the moving pulley 4200 downwards.

[0118] Conversely, as the sub-column 3000 descends, the movable pulley 4200 rises, causing the cam 4410 to rotate in a manner that unwinds the second metal wire 4600. Furthermore, the cam 4410 and the cam pulley 4430 rotate together, causing the third metal wire 4800 to wind around the cam pulley 4430, thereby stretching the tension spring.

[0119] In this case, the cam 4410 forms a cam curve in such a way that the winding radius of the second metal wire 4600 changes during rotation (see reference). Figure 4This is so that the torque of the cam pulley 4430, which extends based on the elastic member 4500, and the torque of the cam 4410, which rises based on the movable pulley 4200, interact to form a reaction torque, thereby enabling the sub-column 3000 to be raised and lowered with a uniform force independent of its height. For example, the spring force of the tension spring based on the rotation angle of the cam pulley 4430 and the torque of the cam pulley 4430 are calculated, and the radius of the cam 4410 is calculated from the torque of the cam 4410 used to compensate for it, thereby deriving the cam curve based on the rotation angle of the cam pulley 4430.

[0120] The cam 4410 has a radius that gradually increases along the circumferential direction, and generally includes: an outer peripheral surface that forms a spiral shape within a predetermined angle range corresponding to the lifting range of the sub-column 3000; and a straight surface formed at the end of the spiral outer peripheral surface. Furthermore, a winding groove 4420 for winding the second metal wire 4600 is formed on the spiral outer peripheral surface of the cam 4410 (see reference). Figure 25 A fixing part for fixing the second metal wire 4600 is formed on one side of the straight surface.

[0121] Therefore, when the sub-column 3000 descends, the tension spring is stretched, increasing the torque of the cam pulley 4430. Simultaneously, the winding radius of the second metal wire 4600 of the cam 4410 gradually increases, further increasing the torque of the cam 4410. In this situation, the torque of the cam 4410 acts as a reaction torque on the torque of the cam pulley 4430, compensating for the difference between the tension spring's elasticity and the weight of the sub-column 3000. This allows the user to raise and lower the sub-column 3000 with a uniform force, independent of its height or the tension spring's extension length.

[0122] The telescopic column 1000 for an X-ray imaging device includes: a main column 2000; a sub-column 3000, which is vertically adjustable and mounted on one side of the main column 2000; and a weight compensation unit 4000, mounted on the main column 2000 to compensate for the weight of the sub-column 3000. This can be achieved through... Figures 17 to 21 Learn more in detail.

[0123] The lower end of the main column 2000 can be combined with a support plate 2100 for supporting the main column 2000, which can be combined with the main body of the mobile X-ray imaging device.

[0124] The main column 2000 includes: a pair of main frames 2200, which are vertically arranged at a predetermined interval along the width direction of the support plate 2100; an upper frame 2300, which is combined with the upper end of the pair of main frames 2200; and a pair of support frames 2400, which are arranged parallel to the main frames 2200 at a predetermined interval behind them.

[0125] The main frame 2200 serves to guide the lifting direction of the sub-column 3000, and multiple pulleys constituting the weight compensation part 4000 are provided on the support frame 2400.

[0126] The sub-column 3000 may include: a first sub-column 3100, which is mounted on one side of the main column 2000 in a liftable manner; and a second sub-column 3200, which is mounted on one side of the first sub-column 3100 in a liftable manner.

[0127] The first sub-column 3100 is mounted on the front surface of the main column 2000 in a height-adjustable manner, and includes: a pair of sub-frames 3110, which are connected to the front surfaces of a pair of main frames 2200 in a manner that allows them to slide vertically; and a pair of movable frames 3120, which are arranged parallel to the sub-frames 3110 on the inner rear side of the pair of sub-frames 3110. In this case, the pair of sub-frames 3110 and the pair of movable frames 3120 are integrated into one unit by a cover frame 3130 attached to the upper end and a lower end frame 3140 attached to the lower end, respectively.

[0128] The second sub-column 3200 is mounted on the front surface of the first sub-column 3100 in a height-adjustable manner. The second sub-column 3200 includes: a pair of lifting frames 3210, each slidably attached to the inner side of the pair of sub-frames 3110; a lifting plate 3220, mounted on the front surface of the pair of lifting frames 3210 and positioned in front of the sub-frames 3110; and an arm support bracket 3230, mounted on the front surface of the lifting plate 3220. Although not shown, the arm support bracket 3230 can be attached to an arm capable of multi-stage extension and retraction, and an X-ray source is provided at its end.

[0129] The following is for reference Figure 22 and Figure 23 The lifting structure of the first sub-column 3100 and the second sub-column 3200 of the main column 2000 is described in detail.

[0130] like Figure 22 As shown, the first sub-column 3100 has a plurality of first rollers 3150 disposed on the outer side of a pair of movable frames 3120. The first rollers 3150 are slidably engaged with a first groove 2210 formed on the inner side of the main frame 2200 of the main column 2000. Therefore, when the first sub-column 3100 rises or falls relative to the main column 2000, the first rollers 3150 of the movable frames 3120 will move along the first groove 2210 of the main frame 2200.

[0131] like Figure 23As shown, the second sub-column 3200 has a plurality of second rollers 3240 disposed on the outer side of a pair of lifting frames 3210. The second rollers 3240 are slidably engaged with a second groove 3160 formed on the inner side of the sub-frame 3110 of the first sub-column 3100. Therefore, when the second sub-column 3200 rises or falls relative to the first sub-column 3100, the second rollers 3240 of the lifting frame 3210 will move along the second groove 3160 of the sub-frame 3110.

[0132] On the other hand, such as Figure 24 As shown, a first fixed pulley 4100 and a cam unit 4400 are rotatably mounted on the upper end of the support frame 2400 of the main column 2000. In this case, the first fixed pulley 4100 and the cam unit 4400 are coupled on the same axis, but they rotate independently of each other. That is, the cam unit 4400 can be freely rotatably coupled to the rotation axis of the first fixed pulley 4100 via a bearing (not shown) or the like.

[0133] like Figure 25 As shown, the cam unit 4400 includes: a cam 4410 formed in a manner that allows for a change in the winding radius; and one or more cam pulleys 4430 disposed on one side of the cam 4410 in a manner that allows for integral rotation with the cam 4410. The cam 4410 and the cam pulleys 4430 may be formed as a single unit; alternatively, the cam 4410 and the cam pulleys 4430 may be formed from separate components and then combined in a manner that allows for integral rotation.

[0134] Re-reference Figure 24 Multiple first guide pulleys 4900 are provided at the lower part of the first fixed pulley 4100 and the cam unit 4400 in a manner that can be rotated via a rotating shaft. The first guide pulleys 4900 serve to guide the winding direction of the metal wire wound on the cam 4410 and the metal wire wound on the cam pulley 4430.

[0135] A movable pulley 4200 is provided at the lower part of the first guide pulley 4900 in a height-adjustable manner, and the rotation axis of the movable pulley 4200 is combined with a "U"-shaped metal wire fixing bracket 4210.

[0136] A third fixed pulley 4700 is provided at the lower part of the movable pulley 4200. As an example, the third fixed pulley 4700 can be rotatably supported by a first support bracket 4710 attached to the upper side of the support frame 2400.

[0137] The second guide pulley 5000 can be rotatably positioned between the movable pulley 4200 and the third fixed pulley 4700 in the second support bracket 5100. The second guide pulley 5000 guides the movement of the second metal wire 4600, which is connected at one end to the metal wire fixing bracket 4210 and extends upward through the third fixed pulley 4700.

[0138] The first metal wire 4300 connects the main column 2000 and the first sub-column 3100 via the first fixed pulley 4100 and the movable pulley 4200. (Refer to...) Figure 24 and Figure 26 One end of the first metal wire 4300 is connected to the upper frame 2300 of the main column 2000 via a fastener, and the other end, after being wound several times around the movable pulley 4200 and the first fixed pulley 4100, is connected to the movable frame 3120 of the first sub-column 3100 via a fastener. Therefore, when the first sub-column 3100 rises and falls, the movable pulley 4200 will rise and fall relative to the first fixed pulley 4100.

[0139] Re-reference Figure 24 To enable the cam unit 4400 and the movable pulley 4200 to rotate in a lifting linkage, a second metal wire 4600 is connected between the movable pulley 4200 and the cam unit 4400. More specifically, one end of the second metal wire 4600 is connected to the metal wire fixing bracket 4210, and the other end passes through the third fixed pulley 4700 and is connected to one side of the winding groove 4420 of the cam 4410. Therefore, when the movable pulley 4200 is raised or lowered, the second metal wire 4600 will be wound around the cam 4410 or unwound from the cam 4410.

[0140] Furthermore, the cam pulley 4430 and the elastic component 4500 are connected by a third metal wire 4800. One end of the third metal wire 4800 is connected to the upper end of the elastic component 4500, and the other end extends upward and is wound around the cam pulley 4430. Therefore, when the cam 4410 rotates, if the cam pulley 4430 rotates together with the cam 4410, the elastic component 4500 can be extended or retracted by linkage with the cam pulley 4430, or the cam pulley 4430 and the cam 4410 can rotate together by linkage with the extension or retraction of the elastic component 4500.

[0141] On the other hand, according to a second embodiment of the present invention, a linkage mechanism may be included to raise and lower the second sub-column 3200 by means of a lifting linkage with the first sub-column 3100, with reference to... Figure 20 and Figure 21 Let me explain this.

[0142] Reference Figure 20 and Figure 21A fourth fixed pulley 5200 is rotatably provided at the upper end of the first sub-column 3100, and a fourth metal wire 5300 is connected to the main column 2000 and the second sub-column 3200 via the fourth fixed pulley 5200 of the first sub-column 3100.

[0143] When the second sub-column 3200 is raised or lowered by linkage with the first sub-column 3100, the fourth fixed pulley 5200 plays the role of determining the stroke ratio of the second sub-column 3200 relative to the first sub-column 3100. For this purpose, the fourth fixed pulley 5200 can be, for example, composed of two-radius pulleys with two different radii.

[0144] In this case, one end of the fourth metal wire 5300 is connected to the fixed bracket 5400 provided on the upper side of the support plate 2100 at the lower part of the main column 2000, and the other end is connected to the lifting frame 3210 of the second sub-column 3200 via the fourth fixed pulley 5200 of the first sub-column 3100 (see reference). Figure 23 ).

[0145] The following is a detailed description of the lifting and lowering action of the telescopic column 1000 for the X-ray imaging device according to the second embodiment of the present invention.

[0146] When the first sub-column 3100 and the second sub-column 3200 are raised to their maximum relative to the main column 2000, if a user presses down on the second sub-column 3200 to lower it, the fourth metal wire 5300, which is connected at one end to the lifting frame 3210 of the second sub-column 3200, will press the fourth fixed pulley 5200 to lower the first sub-column 3100.

[0147] When the first sub-column 3100 descends, the movable pulley 4200 rises towards the first fixed pulley 4100 via the first metal wire 4300. The second metal wire 4600 wound around the cam 4410 is unwound, causing the cam 4410 to rotate. The cam pulley 4430, which rotates together with the cam 4410, winds around the third metal wire 4800 to stretch the elastic member 4500.

[0148] Conversely, with the first sub-column 3100 and the second sub-column 3200 lowered to their maximum relative to the main column 2000, if the user raises the second sub-column 3200, the first sub-column 3100 will rise together with the second sub-column 3200. The third metal wire 4800 wound around the cam pulley 4430 will be unwound by the elastic force of the elastic member, causing the cam pulley 4430 to rotate. In this case, the cam 4410, which rotates together with the cam pulley 4430, will rotate and wind the second metal wire 4600 to lower the movable pulley 4200.

[0149] In this case, the stroke ratio of the second sub-column 3200, which is raised and lowered in conjunction with the first sub-column 3100, is determined by the fourth fixed pulley 5200, which consists of two-stage radius pulleys. The elastic force of the elastic component 4500 compensates for the weight of the first sub-column 3100 and the second sub-column 3200, allowing the user to easily lower the first sub-column 3100 and the second sub-column 3200 with very little force.

[0150] Furthermore, when the elastic force of the elastic component 4500 changes, the torque of the cam 4410 acts as a reaction torque on the torque of the cam pulley 4430, thereby compensating for the difference between the elastic force of the elastic component 4500 and the weight of the first sub-pillar 3100 and the second sub-pillar 3200. This part has been explained.

[0151] The embodiments of the present invention have been described above, but those skilled in the art can make various modifications without departing from the scope of protection of the present invention.

[0152] Industrial availability

[0153] The telescopic column for X-ray imaging apparatus according to the present invention can be quickly and conveniently extended or shortened manually, even without a separate drive source or weight counterweight.

Claims

1. A telescopic column for an X-ray imaging device, characterized in that, include: Main column; Sub-columns are installed on one side of the aforementioned main columns in a way that allows them to be raised and lowered; and A weight compensation unit, located on the other side of the main column, is used to compensate for the weight of the sub-column. The aforementioned weight compensation unit includes: A cam is used to change the winding radius of the second metal wire according to the lifting height of the aforementioned sub-column; and The elastic component extends and retracts with the rotation of the cam to provide elastic force in order to compensate for the weight of the sub-column. Within a specified angular range, the radius of the aforementioned cam gradually increases along one direction of the circumference. The aforementioned cam includes a curved surface, which forms a spiral shape within the aforementioned specified angle range.

2. The telescopic column for the X-ray imaging device according to claim 1, characterized in that, The aforementioned weight compensation unit includes: The first fixed pulley is installed on the aforementioned main column; The movable pulley is configured to be able to move up and down relative to the first fixed pulley. The first metal wire is attached to the main column at one end and to the sub-column at the other end via the movable pulley and the first fixed pulley. A cam unit is configured to rotate in conjunction with the lifting and lowering of the aforementioned movable pulley; the cam unit includes the aforementioned cam; and The aforementioned elastic component extends and retracts in a manner that is in rotational linkage with the aforementioned cam unit, and is used to provide elastic force to the aforementioned sub-column.

3. The telescopic column for the X-ray imaging device according to claim 1, characterized in that, The above sub-columns include: The first sub-column is installed on one side of the aforementioned main column in a way that allows it to be raised and lowered; and The second sub-column is installed on one side of the first sub-column in a way that allows it to be raised and lowered.

4. The telescopic column for the X-ray imaging device according to claim 3, characterized in that, It also includes a linkage mechanism that is linked to the lifting of the first sub-column to cause the second sub-column to lift. The aforementioned collaborative mechanisms include: A second fixed pulley is disposed at the upper end of the first sub-post; and The fourth metal wire is attached to the main column at one end and to the second sub-column at the other end via the second fixed pulley.

5. The telescopic column for an X-ray imaging device according to claim 2, characterized in that, The aforementioned weight compensation unit also includes: The aforementioned second metal wire has one end attached to one side of the aforementioned movable pulley and the other end wound around one side of the aforementioned cam unit; and The third metal wire is attached at one end to the aforementioned elastic component and at the other end to the other side of the aforementioned cam unit.

6. The telescopic column for an X-ray imaging device according to claim 5, characterized in that, The aforementioned cam unit also includes a cam pulley, which is disposed on one side of the aforementioned cam in a manner that is integrally rotatable with the aforementioned cam, for winding the aforementioned third metal wire.

7. The telescopic column for an X-ray imaging device according to claim 6, characterized in that, The torque of the cam, which is based on the lifting and lowering of the aforementioned movable pulley, acts as a reaction torque on the torque of the cam pulley, which is based on the extension and retraction of the aforementioned elastic member.

8. The telescopic column for an X-ray imaging device according to claim 5, characterized in that, The aforementioned weight compensation unit includes a third fixed pulley disposed on one side of the aforementioned elastic member. The second metal wire is wound around one side of the cam unit via the third fixed pulley.

9. The telescopic column for an X-ray imaging device according to claim 8, characterized in that, The above sub-columns include: The first sub-column is installed on one side of the aforementioned main column in a way that allows it to be raised and lowered; and The second sub-column is installed on one side of the first sub-column in a way that allows it to be raised and lowered. The telescopic column of the aforementioned X-ray imaging device also includes a linkage mechanism that is linked to the lifting of the first sub-column to raise and lower the second sub-column. The aforementioned collaborative mechanisms include: A fourth fixed pulley is disposed at the upper end of the first sub-post; and The fourth metal wire is attached at one end to one side of the main column and at the other end to one side of the second sub-column via the fourth fixed pulley.

10. A telescopic column for an X-ray imaging device, characterized in that, include: Main column; Sub-columns are installed on one side of the aforementioned main columns in a way that allows them to be raised and lowered; and A weight compensation unit, located on the other side of the main column, is used to compensate for the weight of the sub-column. The above sub-columns include: The first sub-column is installed on one side of the aforementioned main column in a way that allows it to be raised and lowered; and The second sub-column is installed on one side of the first sub-column in a way that allows it to be raised and lowered. The aforementioned weight compensation unit includes: The first fixed pulley is located at the lower part of the main column; A movable pulley is provided on top of the first fixed pulley in a manner that allows it to be raised and lowered relative to the first fixed pulley. The first metal wire is attached to the main column at one end and to the sub-column at the other end via the movable pulley and the first fixed pulley. The cam rotates in a manner that is linked to the lifting and lowering of the aforementioned movable pulley; A pair of cam pulleys are arranged on both sides of the cam in a manner that allows them to rotate integrally with the cam. The second metal wire is attached at one end to one side of the aforementioned movable pulley and at the other end wound around the aforementioned cam. The elastic component extends and retracts in a manner that is linked to the rotation of the aforementioned cam pulley, and is used to provide elastic force to the aforementioned sub-column; The third metal wire has one end wound around the aforementioned cam pulley and the other end attached to the aforementioned elastic component; A second fixed pulley is rotatably mounted on the upper end of the first sub-post; and The fourth metal wire is attached at one end to the second sub-post and at the other end to the main post via the second fixed pulley. Within a specified angle range, the radius of the aforementioned cam gradually increases along one direction of the circumference, and The aforementioned cam includes a curved surface, which forms a spiral shape within the aforementioned specified angle range.

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