JP2017189559A - Interlock mechanism for medical examination table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interlock mechanism for a medical examination table, the interlock mechanism being capable of horizontally arranging a seat part in a bed form and arranging the seat part at an appropriate position in a fallen chair form.SOLUTION: An interlock mechanism 10 for a medical examination table includes: a drive shaft part 16 provided below a rest part, a track conversion part 18 and an arm part 23 being connected to the drive shaft part, a link arm part 29 being connected to the arm part 23. The arm part 23 comprises: an arm rotary shaft support part 24 connected to the drive shaft part 16; and an arm tip shaft support part 25 connected to the seat part 22. The link arm part 29 comprises: a link arm tip shaft support part 30 that deviates from the arm tip shaft support part 25 and is connected to the seat part 22; a link arm rotary shaft support part 31 that deviates from the drive shaft part 16 and is connected to the arm rotary shaft support part 24; and a link arm guide part 32 that is formed on the side opposite to the link arm tip shaft support part 30 across the link arm rotary shaft support part 31 and is displaced along the track conversion part 18.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an interlocking mechanism for an examination table provided in an examination table on which a person to be examined sits during an examination in a medical facility.

  Conventionally, as a screening table used in, for example, obstetrics and gynecology or urology, there is one described in Patent Document 1 below. In this examination table, the angle of the seat with respect to the lumbar plate changes, so that the bed shape that supports the examinee in a supine posture, and the groin area is bent while lying on the calf on the support leg It is transformed into a form that supports the examinee in a crushed stone posture (hereinafter referred to as “falling chair form”).

JP 2002-248136 A

  However, in a general examination table, the waist plate portion and the seat portion are directly connected, and an axis when the angle of the seat portion changes with respect to the waist plate portion is provided between the waist plate portion and the seat portion. Therefore, there are cases where the shaft rises from the surface of the waist plate portion and hinders the examination, or the raised shaft contacts the examinee and may give the examinee discomfort.

  Also, if the shaft position is lowered below the position of the lumbar plate, the seat will be tilted with respect to the lumbar plate by lowering the side closer to the lumbar plate by the amount the shaft is lowered. The part cannot take the form of a bed horizontal to the waist plate part. Further, when the seat is raised from the bed in this state, the waist plate and the seat are too far apart, and the seat is not disposed at a suitable position for supporting the examinee in a crushed stone posture.

  The present invention has been proposed in view of the above circumstances. That is, an object of the present invention is to provide an examination table interlocking mechanism that can horizontally arrange the seat in the bed form and can arrange the seat in an appropriate position in the fall chair form.

  In order to achieve the above-mentioned object, the interlocking mechanism for the examination table according to the present invention rotates the seat provided on the lower body side of the subject to be examined, with respect to the drooping portion on which the upper half of the subject is leaned, In the interlocking mechanism for the examination table, which deforms the examination table into a bed configuration that supports the examinee in a laid state and a fall chair configuration in which the examinee is laid down and the groin is bent, An arm provided with a drive shaft portion provided below the bend portion as a rotation shaft, an arm rotation shaft support portion connected to the drive shaft portion, and an arm tip shaft support portion connected to the seat portion A link arm tip shaft support portion connected to the seat portion and shifted from the arm tip shaft support portion, and a link arm rotation shaft support connected to the arm rotation shaft support portion off the drive shaft portion Parts equipped with And the seat portion in the bed form is supported by the arm tip shaft support portion and the link arm tip shaft support portion, and is installed at the same height as the sag portion. The seat is displaced with the drive shaft portion as an axis, and the seat portion is displaced with the side closer to the bend portion as an axis, so that the examination table has the bed configuration. And the above-described fallen chair form.

  The interlocking mechanism for the examination table according to the present invention includes a trajectory conversion unit that is coupled to the drive shaft unit and is fixed to the twisting unit, and moves along the trajectory conversion unit as the arm unit rotates. The link arm guide portion is formed on the opposite side of the link arm tip shaft support portion with respect to the link arm rotation shaft support portion of the link arm portion.

  The interlocking mechanism for the examination table according to the present invention has a storage configuration in which the seat portion is displaced in a direction opposite to the displacement direction of the seat portion when the bed shape is changed to the falling chair shape in the form of the examination table. A first guide part included in the trajectory conversion part for displacing the seat part along a first trajectory that is a trajectory when the storage form and the bed form are mutually deformed; And a second guide part that displaces the seat part along a second track that is smaller than the first track and that is a track when deforming to a fallen chair form. To do.

  In the examination table interlocking mechanism according to the present invention, the first guide portion is formed in an arc shape with the same radius centered on the drive shaft portion, and the second guide portion is formed from the end of the first guide portion. It is formed to be inclined toward the drive shaft portion.

  The interlocking mechanism for an examination table according to the present invention has the above-described configuration. That is, since the seat portion is supported by the arm portion and the link arm portion that follows this arm portion, in the bed form, the seat portion can be arranged horizontally with respect to the installation surface at the same height as the drooping portion. it can. Moreover, in the fall chair form, the seat portion can be tilted further toward the lean portion side to be close to the lean portion, and the seat portion can be arranged at an appropriate position.

  Further, since the drive shaft portion is provided below the bend portion, the surface of the bend portion and the seat portion is flat compared to the case where the drive shaft portion is disposed between the bend portion and the seat portion. is there. Therefore, the drive shaft does not interfere with the examination, and does not give the examinee discomfort due to contact with the examinee.

  The interlocking mechanism for an examination table according to the present invention is provided with a trajectory conversion unit that is connected to the drive shaft unit and is fixed to the tilting unit, and moves along the trajectory conversion unit as the arm unit rotates. The link arm portion is formed on the opposite side of the link arm tip shaft support portion with respect to the link arm rotation shaft support portion. With this configuration, when the link arm guide part moves along the trajectory conversion part, the link arm tip axis support part is displaced about the link arm rotation shaft support part as an axis, and the angle of the seat part changes. To do. That is, in addition to the displacement of the seat portion by the arm portion, the angle of the seat portion with respect to the bent portion is finely changed by changing the angle by the displacement of the link arm portion. Therefore, a seat part can be arrange | positioned in a suitable position in a fall chair form.

  The interlocking mechanism for the examination table according to the present invention includes a storage form in which the seat part is displaced in a direction opposite to the displacement direction of the seat part when the bed form falls into the fallen chair form, and is included in the deformation of the examination table. The first guide part for displacing the seat along the first trajectory that is the trajectory when the storage form and the bed form are mutually deformed, and the bed form and the falling chair form And a second guide portion that displaces the seat along a second track that is a track and is smaller than the first track. That is, the seat portion is displaced largely in the first track compared to the second track, and is displaced slightly in the second track compared to the first track. Therefore, by displacing the seat along two different tracks, the seat can be arranged at an appropriate position in the fallen chair form.

  In the examination table interlocking mechanism according to the present invention, the first guide portion is formed in an arc shape with the same radius around the drive shaft portion, and the second guide portion is directed from the end of the first guide portion toward the drive shaft portion. And inclined. With this configuration, when the link arm guide portion moves along the first guide portion, the link arm portion displaces the seat portion along the first track while keeping the angle of the seat portion with respect to the arm portion constant. When the link arm guide portion approaches the drive shaft portion along the second guide portion, the link arm portion changes the angle of the seat portion with respect to the arm portion and displaces the seat portion along the second track. Therefore, a seat part can be arrange | positioned in a suitable position in a fall chair form.

It is the perspective view by which the external appearance of the examination table provided with the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the perspective view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the partial left view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the top view in which the interlocking mechanism for examination tables concerning the embodiment of the present invention was shown. It is the partial plane enlarged view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the partial plane enlarged view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the front view by which the examination table interlocking mechanism which concerns on embodiment of this invention was shown. It is the partial front enlarged view by which the examination table interlocking mechanism which concerns on embodiment of this invention was shown. It is the perspective view by which the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the fragmentary perspective enlarged view in which the examination table interlocking mechanism which concerns on embodiment of this invention was shown. It is operation | movement explanatory drawing by which the locus | trajectory of operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown. It is the right view in which the process of the operation | movement of the interlocking mechanism for examination tables which concerns on embodiment of this invention was shown.

  Hereinafter, an interlocking mechanism for an examination table according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the appearance of an examination table provided with an examination table interlocking mechanism according to an embodiment of the present invention, and FIGS. 2 to 11 show the structure of the examination table interlocking mechanism.

  As shown in FIG. 1, the examination table 1 has a chair portion 7 attached to a base portion 2. The examination table 1 rotates the seat 22 provided on the lower body side of the examinee against the drooping portion 11 on which the upper half of the examinee (not shown) leans, and the tray 34 and the support leg 6 By moving up and down, it is transformed into various forms. In other words, the examination table 1 is not only in the sitting form in which the examinee is seated, but also in the fallen chair form in which the examinee is laid down and the groin is bent (the crushed stone position) by the interlocking mechanism for the examination table. A bed configuration for supporting the examiner in a laid state, a storage configuration in which the seat portion 22 and the tray 34 are disposed below the drooping portion 11, a seat portion 22 being disposed below the drooping portion 11 and the tray 34. Is deformed into a tray form arranged on the lower body side of the examinee.

  In the following description, the longitudinal direction of the examination table 1 is front and rear, the width direction of the examination table 1 is right and left, and the height direction in which the tray 34 is displaced is upper and lower. Moreover, the rotation direction of the seat part 22 at the time of deformation | transformation in order of a tray form, a storage form, a bed form, and a fall chair form is set to clockwise rotation, and on the contrary, it changes in order of a fall chair form, a bed form, a storage form, and a tray form. The direction of rotation is counterclockwise.

  As shown in FIGS. 2 to 11, the examination table interlocking mechanism 10 is attached to the base unit 2. The base unit 2 is configured by mounting a base body 4 on a base installation unit 3 installed on the installation surface. A pair of base frame parts 5 are attached to the upper surface of the base body part 4. The base frame part 5 is formed in a plate shape and is configured by a pair of left and right.

  The examination table interlocking mechanism 10 mounted on the base body 4 includes a bending portion 11 disposed on each base frame portion 5 and a bottom surface of the bending portion 11 between the base frame portions 5. A single drive unit 15 attached to the drive unit 15, a drive shaft unit 16 disposed below the bend unit 11 and coupled to the drive unit 15, and both left and right ends of the bend unit 11 coupled to the drive shaft unit 16 The orbit converting portion 18 fixed to the side, the seat portion 22 having the drive shaft portion 16 as a rotation axis, the pair of left and right arm portions 23 connected to the drive shaft portion 16 and the seat portion 22, and the respective arm portions. 23 and the link arm portion 29 connected to the seat portion 22, the tray 34 connected to the base frame portion 5 and the bent portion 11 via the tray connection link piece 46, and the tray in conjunction with the arm portion 22. And a pair of left and right link mechanisms 35 that displace 34. It is. In addition, since the shape of the arm part 23 or the link mechanism 35 is left-right symmetric, in the following description, only the member on the right side will be described as a member whose shape is left-right symmetric.

  The waist part 11 has a waist plate part 12 that supports the waist of the examinee and a backrest part 13 that supports the back of the examinee, and link shaft support pieces 14 are formed on both the left and right sides of the lower surface. The drive unit 15 is, for example, a hydraulic or pneumatic cylinder, and the like. The drive unit 15 rotates the seat portion 22 with respect to the bending portion 11 via the arm portion 23, and the tray 34 via the link mechanism 35. 11 is raised and lowered. The drive shaft portion 16 is long in the left-right direction, and the center is connected to the tip of the piston of the drive portion 15 via the drive connection piece 17. The drive shaft portion 16 is connected to the arm portion 23, the trajectory conversion portion 18, and the drive shaft link piece 37 of the pressing link portion 36 in the link mechanism 35, and is arranged in order from the left and right ends toward the center.

  The arm portion 23 is formed in a substantially “C” shape, and a part of the inner surface extends toward the center so as to be connected to the drive shaft portion 16, and the arm rotation shaft support portion 24. And an arm tip shaft support portion 25 that protrudes in a rod shape from the outer surface and is connected to the seat portion 22. The arm rotation shaft support portion 24 is formed of an arm first curved piece 26 and an arm second curved piece 27, and a contact portion 28 is provided on the arm first curved piece 26 side. The abutting portion 28 protrudes in the same direction as the drive shaft portion 16 toward the left. The arm tip shaft support portion 25 protrudes outward from between the curved pieces 26 and 27 and bends, and is connected to the front side of the right side surface of the seat portion 22.

  The link arm portion 29 is offset from the arm tip shaft support portion 25 and is displaced from the drive shaft portion 16 and the link arm tip shaft support portion 30 connected via a long hole to the rear side of the right side surface of the seat portion 22. A link arm rotation shaft support portion 31 connected to the arm second bending piece 27 side in the arm rotation shaft support portion 24 of the section 23, and the link arm rotation shaft support portion 31 opposite to the link arm tip shaft support portion 30. A link arm guide portion 32 formed on the side is provided. The link arm rotation shaft support 31 and the link arm tip shaft support 30 are bent, and the link arm rotation shaft support 31 and link arm guide 32 are curved. The link arm guide portion 32 has a roller 33 attached to the left.

  The trajectory conversion unit 18 is a member that is different in the circumferential direction from the drive shaft unit 16 that is the center. More specifically, the trajectory conversion unit 18 includes a first guide portion 19 that is an arcuate circumferential surface formed in a semicircular shape with the same radius centered on the drive shaft portion 16, and a lower end of the first guide portion 19. A second guide portion 20 that is a flat surface formed inclined toward the drive shaft portion 16 and a step portion 21 that is an end of the second guide portion 20 on the drive shaft portion 16 side are formed. Each guide part 19 and 20 moves along the roller 33 of the link arm guide part 32 in the link arm part 29.

  The link mechanism 35 rotates the seat portion 22 counterclockwise so that the pressing link portion 36 pressed by the arm portion 23 via the drive shaft link piece 37 and the tray 34 in conjunction with the pressing link portion 36 are linked. A tray link portion 38 to be raised, and a tray connection link piece 46 to which the pressing link portion 36 and the tray link portion 38 are connected are provided.

  The pressing link portion 36 is formed in a longitudinal direction, and the front end and the rear end are bent upward. The pressing link portion 36 has a front end connected to the drive shaft portion 16 via a drive shaft link piece 37 and a rear end connected to the tray link portion 38.

  The tray link portion 38 includes a long tray first link portion 39, a long tray second link portion 40 parallel to the tray first link portion 39, and a tray third link that connects the link portions 39, 40 to each other. Part 41. The tray first link portion 39 is connected at its upper end to the rear end of the pressing link portion 36, and is connected to the upper end side of the first bent portion 42 projecting forward and the lower portion of the first bent portion 42. And a second bent portion 43 projecting rearward is formed. The first bent portion 42 is connected to the link shaft support piece 14 on the lower surface of the bent portion 11 together with the tray connecting link piece 46. Further, a locking piece 44 is attached to the right side of the first bent portion 42 and the second bent portion 43 to stop the tray 34 below the seat portion 22 in the fallen chair form, the bed form, and the storage form. The lower end of the tray first link portion 39 is bent forward and connected to the rear of the tray 34 via the tray third link piece 41. The tray second link portion 40 has an upper end connected to the tray connection link piece 46 and a lower end connected to the tray third link piece 41.

  The tray connecting link piece 46 is substantially “V” -shaped, and apexes are respectively formed on the rear end side, the upper end side, and the lower end side. The rear end side vertex 47 is connected to the base frame portion 5, the upper end side vertex 48 is connected to the link shaft support piece 14 of the bent portion 11, and the lower end side vertex 49 is connected to the tray second link portion 40. A locking groove 50 for locking the locking piece 44 of the tray link portion 38 is formed between the upper end side vertex 48 and the lower end side vertex 49 of the tray connecting link piece 46.

  The tray 34 is formed in a quadrangular shape and accepts the excrement of the patient. A tray first link piece 39 and a tray second link piece 40 are connected to each other on the right side of the tray 34 via a tray third link piece 41.

  As described above, the examination table interlocking mechanism 10 is configured.

  Next, the operation of the examination table interlock mechanism 10 will be described with reference to the drawings. FIG. 12 shows a trajectory of the operation of the examination table interlocking mechanism 10 according to the present embodiment.

  As shown in FIG. 12, according to the examination table interlocking mechanism 10, the rotation locus of the seat portion 22 changes with the bed form as a boundary. That is, when the storage form and the bed form are mutually deformed, the seat 22 rotates along the first track 51, and when the bed part and the fall chair form are mutually deformed, the first track 51 The seat portion 22 rotates along the second small orbit 52. The rotation trajectory of the seat portion 22 is converted by the trajectory conversion portion 18 and the link arm portion 29. More specifically, in the link arm portion 29, the link arm rotation shaft support portion 31 is connected to the arm portion 23, and the link arm guide portion 32 is disposed on the outer periphery of the trajectory conversion portion 18. Therefore, when the arm portion 23 rotates about the drive shaft portion 16, the link arm portion 29 rotates around the drive shaft portion 16 as the arm portion 23 rotates, and the link arm rotation shaft support portion 31 serves as an axis. Displace. At that time, since the roller 33 of the link arm guide portion 32 moves along the outer periphery of the trajectory changing portion 18, the link arm portion 29 rotates differently from the rotation of the arm portion 23.

  When the storage form is changed to the bed form, or when the bed form is changed to the storage form, the roller 33 of the link arm guide part 32 moves along the first guide part 19 of the trajectory conversion part 18, so that the seat part 22 is displaced along the first track 51 around the drive shaft 16. That is, when the roller 33 is at the virtual position a, the seat 22 is disposed at the virtual position A, and when the roller 33 is at the virtual position b, the seat 22 is disposed at the virtual position B, and the roller 33 is disposed at the virtual position c. The seat 22 is disposed at the virtual position C. When the roller 33 is at the virtual position d, the seat 22 is disposed at the virtual position D. On the other hand, when the bed shape is changed to the fall chair shape, or when the fall chair shape is changed to the bed shape, the roller 33 moves along the second guide portion 20 of the trajectory conversion portion 18, so the seat portion 22 is It is displaced along the second track 52. Since the center of the second track 52 is a virtual rotation axis O between the waist plate portion 12 and the seat portion 22 in the bed form, the seat portion 22 rotates in a track smaller than the first track 51. That is, when the roller 33 is at the virtual position e, the seat 22 is disposed at the virtual position E, and when the roller 33 is at the virtual position f, the seat 22 is disposed at the virtual position F.

  Next, an operation process of the examination table interlock mechanism 10 will be described with reference to the drawings. FIGS. 13 to 18 show the process of operation of the examination table interlocking mechanism 10 according to the present embodiment.

  In FIG. 13, the examination table 1 is in a fallen chair form. That is, in the arm portion 23, the arm tip shaft support portion 25 is directed frontward and upward, and in the link arm portion 29, the roller 33 of the link arm guide portion 32 is disposed on the step portion 21 of the drive conversion portion 18. The abutting portion 28 is disposed on the upper surface side of the bent portion 11. The seat portion 22 is disposed above the bend portion 11. In addition, the locking piece 44 is locked in the locking groove 50 of the tray connecting link piece 46, and the tray 34 is disposed on the side near the base installation portion 3 below the bent portion 11.

  When the drive unit 15 is driven and the piston is moved backward in the fallen chair state, the drive shaft unit 16 is rotated through the drive connecting piece 17 and the arm unit 23 is rotated counterclockwise. Following the arm part 23, the link arm part 29 moves in a direction in which the roller 33 of the link arm guide part 32 moves away from the step part 21 of the trajectory conversion part 18 and away from the drive shaft part 16 along the second guide part 20. To do. That is, the seat portion 22 rotates counterclockwise about the drive shaft portion 16 as well as counterclockwise around the virtual rotation axis O at the rear end on the side close to the bent portion 11 of the seat portion 22. Rotate to.

  As shown in FIG. 14, the roller 33 moves to the lower end of the second guide portion 20, and the link arm portion 29 rotates clockwise about the link arm rotation shaft support portion 31 to support the link arm tip shaft. The part 30 pushes up the rear end of the seat part 22. The examination table 1 is transformed into a bed form.

  In FIG. 15, the examination table 1 is in the form of a bed. That is, the arm portion 23 has the arm tip shaft support portion 25 directed forward, and the link arm portion 29 has the roller 33 of the link arm guide portion 32 disposed at the lower end of the first guide portion 19 in the drive conversion portion 18. ing. The abutting portion 28 is disposed at substantially the same height as that of the bent portion 11. The seat portion 22 is supported by the arm tip shaft support portion 25 and the link arm tip shaft support portion 30 and is disposed substantially horizontally with respect to the installation surface of the examination table 1 at the same height as the squeezing portion 11.

  When the drive unit 15 continues to drive in the bed state, the arm unit 23 that rotates counterclockwise follows the link arm unit 29, and the roller 33 of the link arm guide unit 32 is counterclockwise along the first guide unit 19. Move around.

  As illustrated in FIG. 16, the roller 33 moves along the first guide portion 19 while the link arm portion 29 maintains a certain angle with respect to the seat portion 22, and the examination table 1 is transformed into a storage form. To do.

  In FIG. 17, the examination table 1 is in the storage form. In other words, the arm portion 23 has the arm tip shaft support portion 25 directed downward, and the link arm portion 29 has the roller 33 of the link arm guide portion 32 disposed closer to the upper side of the first guide portion 19 of the drive conversion portion 18. Has been. The contact portion 28 is disposed on the lower surface side of the bent portion 11 and is close to the drive shaft link piece 37. The seat portion 22 is disposed substantially perpendicular to the bent portion 11. The tray 34 is disposed below the bent portion 11.

  When the drive unit 15 continues to be driven in the retracted state, the drive shaft unit 16 rotates and the arm unit 23 rotates counterclockwise, and the contact unit 28 contacts the drive shaft link piece 37 to operate the link mechanism 35. To do. That is, when the arm portion 23 continues to rotate counterclockwise and the drive shaft link piece 37 continues to be pushed by the contact portion 28, the pressing link portion 36 moves backward in conjunction with the drive shaft link piece 37. To do. In conjunction with the pressing link portion 36, the tray first link portion 39 of the tray link portion 38 rotates clockwise about the upper end side vertex 48 of the tray connecting link piece 46. As the locking piece 44 moves away from the locking groove 50 of the tray connecting link piece 46, the tray 34 rises, and the examination table 1 is transformed into a tray shape.

  In FIG. 18, the examination table 1 is in a tray state. That is, the tray 34 is disposed in the vicinity of the bent portion 11, and the seat portion 22 is close to the lower surface side of the bent portion 11.

  Next, the effect of the examination table interlocking mechanism 10 will be described.

  As described above, according to the present embodiment, the drive shaft portion 16 is disposed below the bent portion 11 and is connected to the drive portion 15 via the drive connection piece 17. Therefore, the surface of the drooping part 11 and the seat part 22 is flat. Therefore, the drive shaft portion 16 does not interfere with the examination and does not give the examinee discomfort due to contact with the examinee.

  According to the present embodiment, the link arm portion 29 has the link arm rotation shaft support portion 31 connected to the arm portion 23 and the link arm guide portion 32 disposed on the outer periphery of the trajectory conversion portion 18. In the fallen chair configuration, the roller 33 of the link arm guide portion 32 moves to the lower end of the second guide portion 20, and the link arm portion 29 rotates clockwise around the link arm rotation shaft support portion 31 as the link arm tip. When the shaft support part 30 pushes up the rear end of the seat part 22, the examination table 1 is transformed into a bed shape. Therefore, in the bed form, the seat part 22 can be arranged substantially horizontally with respect to the installation surface at the same height as the bent part 11. Moreover, in the fall chair form, the seat part 22 can be tilted more toward the leaning part 11 side and can be brought close to the leaning part 11, and the seat part 22 can be disposed at an appropriate position.

  Further, the angle of the seat portion 22 with respect to the bent portion 11 is finely changed by the angle of the seat portion 22 being changed by the rotation of the link arm portion 29 in addition to the rotation of the arm portion 23. Therefore, the seat part 22 can be arrange | positioned in a suitable position in the fall chair form.

  According to the present embodiment, the trajectory conversion portion 18 includes a first guide portion 19 that is an arcuate circumferential surface formed in a semicircular shape with the same radius centered on the drive shaft portion 16, and the first guide portion 19. A second guide portion 20 that is a flat surface formed to be inclined from the lower end toward the drive shaft portion 16 and a step portion 21 that is an end of the second guide portion 20 on the drive shaft portion 16 side are formed. ing. With this configuration, the roller 33 of the link arm guide part 32 moves along the first guide part 19 of the trajectory conversion part 18 when the storage form is changed to the bed form or when the bed form is changed to the storage form. Therefore, the seat portion 22 is displaced along the first track 51 around the drive shaft portion 16. On the other hand, when the bed shape is changed to the fall chair shape, or when the fall chair shape is changed to the bed shape, the roller 33 moves along the second guide portion 20 of the trajectory conversion portion 18, so the seat portion 22 is It is displaced along the second track 52. Since the center of the second track 52 is a virtual rotation axis O between the waist plate portion 12 and the seat portion 22 in the bed form, the seat portion 22 rotates in a track smaller than the first track 51. Therefore, the seat part 22 can be arrange | positioned in an appropriate position in the fall chair form by displacing the seat part 22 along two different track | orbits.

  Further, when the link arm guide part 32 moves along the first guide part 19, the link arm part 29 keeps the seat part 22 along the first track 51 while keeping the angle of the seat part 22 with respect to the arm part 23 constant. Displace. When the link arm guide part 32 approaches the drive shaft part 16 along the second guide part 20, the link arm part 29 changes the angle of the seat part 22 with respect to the arm part 23 to move the seat part 22 to the second track. Rotate along 52. Therefore, the seat part 22 can be arrange | positioned in a suitable position in the fall chair form.

  According to this embodiment, when the drive unit 15 is driven and the piston is moved backward, the drive shaft unit 16 is rotated via the drive connecting piece 17 and the arm unit 23 is rotated counterclockwise, so that the contact unit When the drive shaft link piece 37 continues to be pushed by the contact portion 28 due to contact with the contact portion 28, the pressing link portion 36 moves rearward in conjunction with the drive shaft link piece 37. In conjunction with the pressing link portion 36, the tray first link portion 39 of the tray link portion 38 rotates clockwise around the upper end side apex 48 of the tray connecting link piece 46, and the tray 34 rises. That is, since the seat part 22 and the tray 34 operate | move by the single drive part 15, the seat part 22 and the tray 34 raise / lower and various forms are implement | achieved by controlling the drive part 15. FIG. Therefore, the control is simple. Moreover, since the drive part 15 is single, cost becomes cheap and it is economical.

  According to the present embodiment, the examination table 1 is supported by the examination table interlocking mechanism 10 in a state where the examination subject is laid and the groin portion is bent (crushed stone position) by the examination table interlocking mechanism 10 in addition to the sitting form in which the examination subject is seated. A fall chair form, a bed form that supports the examinee in a laid state, a storage form in which the seat portion 22 and the tray 34 are arranged below the bend portion 11, and the seat portion 22 below the bend portion 11 When the tray 34 is disposed, the tray 34 is deformed into a tray shape disposed on the lower half side of the examinee. With this configuration, by selecting the form of the examination table 1, a plurality of forms suitable for examination are realized by the single drive unit 15. Therefore, control and operation are simple and erroneous operation is suppressed.

  Further, in the storage form, the seat portion 22 and the tray 34 are disposed below the drooping portion 11, so that the seat portion 22 and the tray 34 do not hinder the examination because the subject is separated from the lower body of the examinee. Accordingly, the examiner can comfortably check up.

  According to the present embodiment, the link mechanism 35 includes the pressing link portion 36 that is pressed against the arm portion 23 via the drive shaft link piece 37 by the counterclockwise rotation of the seat portion 22 in the storage configuration, and the pressing link portion 36. A tray link portion 38 that raises the tray 34 in conjunction with the link portion 36 and a tray connection link piece 46 in which the pressing link portion 36 and the tray link portion 38 are connected are provided. When the drive unit 15 continues to be driven in the retracted state, the drive shaft unit 16 rotates and the arm unit 23 rotates counterclockwise, and the contact unit 28 contacts the drive shaft link piece 37 to operate the link mechanism 35. To do. With this configuration, when the arm portion 23 continues to rotate counterclockwise and the drive shaft link piece 37 continues to be pressed by the contact portion 28, the pressing link portion 36 faces rearward in conjunction with the drive shaft link piece 37. Moving. In conjunction with the pressing link portion 36, the tray first link portion 39 of the tray link portion 38 rotates clockwise about the upper end side vertex 48 of the tray connecting link piece 46. As the locking piece 44 moves away from the locking groove 50 of the tray connecting link piece 46, the tray 34 rises, and the examination table 1 is transformed into a tray shape. That is, when the seat portion 22 in the storage form is rotated, the seat portion 22 is separated from the lower body of the examinee, and the tray 34 is raised. Therefore, the control is simple. Further, the seat portion 22 and the tray 34 are interlocked on a concentric orbit with the drive shaft portion 16 as an axis. Therefore, simple control is realized in a limited space.

  According to the present embodiment, the locking piece 44 is attached to the right side of the first bent portion 42 and the second bent portion 43 of the tray first link portion 39 in the tray link portion 38. Further, a locking groove 50 is formed between the upper end side vertex 48 and the lower end side vertex 49 of the tray connecting link piece 46. With this configuration, the locking piece 44 is locked in the locking groove 50 and the tray 34 is stopped below the squeezed portion 11 in the fall chair form, bed form, and storage form. With this configuration, the tray 34 is prevented from moving unintentionally with a simple configuration.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Examination table 2 Base part 3 Base installation part 4 Base body part 5 Base frame part 6 Support leg part 7 Chair part 10 Examination table interlocking mechanism 11 Bending part 12 Lumbar part 13 Backrest part 14 Link shaft support piece 15 Drive Part 16 Drive shaft part 17 Drive connecting piece 18 Trajectory conversion part 19 First guide part 20 Second guide part 21 Step part 22 Seat part 23 Arm part 24 Arm rotation shaft support part 25 Arm tip shaft support part 26 Arm first bending piece 27 Arm second curved piece 28 Contact portion 29 Link arm portion 30 Link arm tip shaft support portion 31 Link arm rotation shaft support portion 32 Link arm guide portion 33 Roller 34 Tray 35 Link mechanism 36 Press link portion 37 Drive shaft link piece 38 Tray link part 39 Tray first link part 40 Tray second link part 41 Tray third link part 42 First bent part 43 Second bent portion 44 Locking piece 46 Tray connecting link piece 47 Rear end side vertex 48 Upper end side vertex 49 Lower end side vertex 50 Locking groove 51 First track 52 Second track af Virtual position A to F Virtual position O Virtual rotation axis

Claims (4)

By rotating the seat provided on the lower body side of the examinee against the drooping part against which the upper body of the examinee leans, the bed configuration that supports the examinee in the lying state and the examinee is laid down In the interlocking mechanism for the examination table that transforms the examination table into a fallen chair form that supports the bent groin in a bent state,
A drive shaft portion provided below the bend portion as a rotation shaft of the seat portion;
An arm rotation shaft support portion connected to the drive shaft portion, and an arm portion provided with an arm tip shaft support portion connected to the seat portion;
A link arm tip shaft support portion that is offset from the arm tip shaft support portion and connected to the seat portion, and a link arm rotation shaft support portion that is offset from the drive shaft portion and connected to the arm rotation shaft support portion. And a link arm portion provided,
The seat portion in the bed form is supported by the arm tip shaft support portion and the link arm tip shaft support portion and is disposed horizontally with respect to the installation surface of the examination table at the same height as the sag portion,
The seat portion is displaced with the drive shaft portion as an axis, and the seat portion is displaced with the side closer to the bend portion as an axis, so that the examination table is in the bed form and the fall chair form. Transforms into,
The interlocking mechanism for the examination table characterized by this. A trajectory conversion unit connected to the drive shaft unit and fixed to the bent portion is provided,
A link arm guide portion that moves along the trajectory changing portion with the rotation of the arm portion is an opposite side of the link arm tip shaft support portion to the link arm rotation shaft support portion of the link arm portion. Formed in the
The interlocking mechanism for an examination table according to claim 1. A storage configuration in which the seat portion is displaced in a direction opposite to the displacement direction of the seat portion when the bed shape is transformed into the falling chair shape is included in the form of the examination table,
In the trajectory conversion unit,
A first guide part for displacing the seat part along a first orbit which is a orbit when transforming into the storage form and the bed form;
And a second guide portion that is a track when the bed shape and the fall chair shape are mutually deformed, and that displaces the seat portion along a second track that is smaller than the first track. ,
The interlocking mechanism for an examination table according to claim 2. The first guide part is formed in an arc shape with the same radius centered on the drive shaft part,
The second guide part is formed to be inclined from the end of the first guide part toward the drive shaft part,
The interlocking mechanism for an examination table according to claim 3.

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