JP2016214546A - Pillow position retaining device and otolaryngologic treatment chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pillow position retaining device and an otolaryngologic treatment chair which operate connected arms individually and stop motions of the arms simultaneously and which thereby can arrange a pillow part at an arbitrary position.SOLUTION: A pillow position retaining device 10 is configured to include: a pillow 2 movable with respect to a back rest 1 of a chair; a movable first arm 11 connected to the back rest 1 side; a movable second arm 12 connected to the movable first arm 11 and connected to the pillow 2; a first lock 27 for stopping motions of the movable first arm 11; a second lock 28 for stopping motions of the movable second arm 12; an eccentric shaft 42 for interlocking the first lock 27 and the second lock 28 simultaneously; and a cylinder 44 for interlocking the eccentric shaft 42.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a pillow position fixing device and an otolaryngological medical chair provided in a medical chair used in a medical facility, for example.

  2. Description of the Related Art Conventionally, a medical chair on which a patient is seated when receiving treatment at a medical facility or the like is provided with a mechanism for adjusting a pillow to various positions and angles according to the posture of the patient. As a device provided with such a mechanism, there is a headrest device for a chair described in Patent Document 1 below.

  In a chair headrest device, a backrest and a headrest are connected via an arm, and the arm is composed of a first arm and a second arm. Since the first arm and the second arm are interlocked, the angle of the second arm changes according to the change of the angle of the first arm. In other words, by setting the headrest to an ideal position and linking the arms, the headrest can always be changed to the ideal position if the change of each arm is constant.

JP-A-3-2366841

  However, according to the headrest device of the chair described in Patent Document 1, since the first arm and the second arm are interlocked as described above, the change in the angle of each arm is constant, and the headrest is arbitrarily Cannot be placed in position. That is, when there are patients with various physiques and postures, the headrest cannot be arranged at a position tailored to such patients.

  The present invention has been proposed in view of the above circumstances. In other words, the pillow position fixing device and the otolaryngological examination chair that can operate the connected arm parts separately and stop the movement of the arm parts at the same time to place the pillow parts at arbitrary positions. The purpose is to provide.

  In order to achieve the above object, a pillow position fixing device according to the present invention includes a pillow part movable with respect to a backrest part of a chair, a movable first arm part connected to the backrest part side, and the movable first part. A movable second arm unit coupled to the arm unit and coupled to the pillow unit, a first lock unit that stops the movement of the movable first arm unit, and a second that stops the movement of the movable second arm unit. A locking unit, an interlocking unit that interlocks the first locking unit and the second locking unit simultaneously, and a driving unit that interlocks the interlocking unit are provided.

  The pillow position fixing device according to the present invention is characterized in that the drive unit and the interlocking unit are provided on a back surface of a backrest of the chair.

  The pillow position fixing device according to the present invention includes a first arm shaft portion provided in the movable first arm portion and connected to the first lock portion, and a second lock portion provided in the movable second arm portion. And a second arm shaft portion coupled to the first arm shaft portion. The first arm shaft portion is gripped by the first lock portion, and the second arm shaft portion is gripped by the second lock portion. It is characterized by that.

  In the pillow position fixing device according to the present invention, the second lock portion includes a grip portion that grips the second arm shaft portion, a flange portion that is connected to the grip portion and opens and closes the grip portion, and the flange portion. And a lock guide portion that opens and closes the grip portion by moving relative to the flange in conjunction with the interlock portion, and the second lock portion is provided in the backrest portion. It is characterized by that.

  In the pillow position fixing device according to the present invention, the first arm shaft portion and the second arm shaft portion are provided on the same axis, and the movable second arm portion is coupled to the second arm shaft portion. A parallel link, a parallel shaft connected to the parallel link, a connecting shaft portion connected to the opposite side of the first arm shaft portion in the movable first arm portion, and a second arm body connected to the connecting shaft portion It is comprised from the part.

  The pillow position fixing device according to the present invention is characterized in that the driving unit is a single cylinder, and the interlocking unit is a shaft connected to a piston of the cylinder and provided with an eccentric part.

  The pillow position fixing device according to the present invention is characterized in that switches for driving the drive unit are provided at both ends of the pillow unit.

  The medical chair for otolaryngology according to the present invention is provided with a pillow position fixing device.

  The pillow position fixing device according to the present invention has the above-described configuration. That is, the movable first arm portion and the movable second arm portion operate separately, and the movement of each arm portion is stopped simultaneously by the separate lock portions. Therefore, while operating each connected arm part separately, and stopping a movement of each arm part simultaneously with a single drive part, a pillow part can be arrange | positioned in arbitrary positions.

  In the pillow position fixing device according to the present invention, the drive unit and the interlocking unit are provided on the back surface of the back of the chair. That is, by providing each part on the backrest part, the periphery of the pillow part can be designed in a small size. Therefore, it is possible to make it easier for a doctor or nurse to work around the chair when supporting the patient's head.

  The pillow position fixing device according to the present invention includes a first arm shaft portion provided in the movable first arm portion and connected to the first lock portion, and a movable second arm portion provided in the movable second arm portion and connected to the second lock portion. A second arm shaft portion, the first arm shaft portion is gripped by the first lock portion, and the second arm shaft portion is gripped by the second lock portion. With this configuration, each arm shaft portion is gripped at an arbitrary angle and the movement of each arm portion stops at an arbitrary position. Therefore, the pillow part can be arranged at an arbitrary position, and fine fine adjustment is possible.

  In the pillow position fixing device according to the present invention, the second lock portion includes a gripping portion that grips the second arm shaft portion, a flange portion that is connected to the gripping portion to open and close the gripping portion, and penetrates the flange portion. The backrest portion includes a lock guide portion that interlocks with the interlocking portion and opens and closes the gripping portion by moving with respect to the flange. That is, the gripping part opens and closes when the lock guide part interlocked with the interlocking part moves relative to the flange part. Therefore, the second arm shaft portion is gripped by the second lock portion in conjunction with the interlocking portion, and the movement of the movable second arm portion stops. Therefore, the pillow part can be arranged at an arbitrary position.

  In the pillow position fixing device according to the present invention, the first arm shaft portion and the second arm shaft portion are provided on the same axis, and the movable second arm portion is connected to the second arm shaft portion, The parallel link is connected, and is composed of a connecting shaft portion connected to the opposite side of the first arm shaft portion in the movable first arm portion, and a second arm main body portion connected to the connecting shaft portion. . That is, the second arm shaft portion of the movable second arm portion and the first arm shaft portion of the movable first arm portion are arranged on the same axis, and the respective arm portions are connected to each other to operate arbitrarily. Thereby, each connected arm part can be operated separately. Further, space saving can be realized, and the periphery of the pillow portion can be designed to be small. Therefore, it is possible to make it easier for a doctor or nurse to work around the chair when supporting the patient's head.

  In the pillow position fixing device according to the present invention, the drive unit is a single cylinder, and the interlocking unit is a shaft that is connected to the piston of the cylinder and includes an eccentric part. With this configuration, the first lock portion and the second lock portion are simultaneously interlocked by the eccentric portion of the shaft. Therefore, the pillow part can be arranged at an arbitrary position by simultaneously stopping the movement of each arm part with a single drive part.

  The pillow position fixing device according to the present invention is provided with switches for driving the drive unit at both ends of the pillow unit. With this configuration, a doctor or a nurse can hold the pillow part by hand and move it while operating the switch of the drive part. Therefore, the work can be facilitated.

  The otolaryngological medical chair according to the present invention is provided with a pillow position fixing device. Therefore, the same effect as described above can be produced.

The appearance of the otolaryngological examination chair concerning an embodiment of the present invention is shown, (a) is the left side view seen from the left side, and (b) is the back perspective view seen from the back. The external appearance of the pillow position fixing device which concerns on embodiment of this invention is shown, (a) is the rear view seen from the back surface, (b) is the right view seen from the right side surface. The external appearance of the pillow position fixing device which concerns on embodiment of this invention is shown, (a) is the upper perspective view seen from the upper side, (b) is the lower perspective view seen from the downward side. The cross section of the pillow position fixing device which concerns on embodiment of this invention is shown, (a) is right side surface AA sectional drawing, (b) is right side surface BB sectional drawing. The pillow position fixing device which concerns on embodiment of this invention is decomposed | disassembled, (a) is a left view of an arm part, (b) is a right view. It is the disassembled perspective view by which the movable 1st arm part and movable 2nd arm part of the pillow position fixing device which concern on embodiment of this invention were decomposed | disassembled. Operation of the pillow position fixing device according to the embodiment of the present invention is shown, (a) is a right side view of a state in which the movable first arm part and the movable second arm part are stopped by operating the lock part, (b). FIG. 6 is a right side view of the state where the stop of the movable first arm portion and the movable second arm portion is released.

  Hereinafter, a pillow position fixing device and an otolaryngological medical chair according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the appearance of an otolaryngological examination chair 50 according to an embodiment of the present invention. 2 and 3 show the appearance of the pillow position fixing device 10 according to the embodiment of the present invention, and FIG. 4 shows a cross section of the pillow position fixing device 10.

  As shown in FIG. 1, an otolaryngological examination chair 50 according to an embodiment of the present invention includes a seat 51 on which a patient is seated, a backrest main body 52 rising from the end of the seat 51, and the backrest. A pillow position fixing device 10 is provided which is built in the main body 52 and can freely change the position of the pillow portion 2 relative to the backrest main body 52 and fix the pillow portion 2 at an arbitrary position.

<Pillow position fixing device>
As shown in FIGS. 2 to 4, the pillow position fixing device 10 according to the embodiment of the present invention is a pillow portion 2 that is movable with respect to the backrest portion 1 that is a frame of the backrest main body portion 52 (see FIG. 4). A movable first arm portion 11 connected to the backrest portion 1 side, a movable second arm portion 12 connected to the movable first arm portion 11 and connected to the pillow portion 2, and a movable first arm portion 11 A first lock portion 27 for stopping the movement of the second lock portion 28, a second lock portion 28 for stopping the movement of the movable second arm portion 12, an eccentric shaft 42 as an interlocking portion for simultaneously interlocking the lock portions 27, 28, and A cylinder 44 is provided as a drive unit for interlocking the eccentric shaft 42. A switch (not shown) for driving the cylinder 44 is provided, for example, at both ends of the pillow portion 2 or in the vicinity of the doctor's feet.

  In the following description, based on FIG. 2A, the back side of the backrest portion 1 is the back surface, the front side of the backrest portion 1 is the front surface, and the vertical direction with respect to the installation surface of the otolaryngology medical chair 50 is vertically And The side surfaces of the otolaryngology medical chair 50 are the right side (see FIG. 2B) and the left side, respectively.

  The backrest portion 1 is a rectangular frame, and includes a cylinder 44, an eccentric shaft 42 connected to a piston member 46 of the cylinder 44, and a first lock portion 27 and a second lock portion 28 that are linked to the eccentric shaft 42. , Provided on the back. The eccentric shaft 42 and the lock portions 27 and 28 are partitioned by a partition plate 3 attached between them. The lower surface of the partition plate 3 is provided with a protruding portion 5 that protrudes downward.

<Drive unit (cylinder)>
The cylinder 44 is, for example, a hydraulic type or a pneumatic type, and is disposed at substantially the center of the backrest portion 1 in a direction in which the piston member 46 moves upward. The cylinder member 45 is rotatably supported with respect to the backrest 1. On the other hand, the connecting member 41 is connected to the tip of the piston member 46, and the eccentric shaft 42 is connected via the connecting member 41. The connecting member 41 has a flat plate shape and is formed with a hole to which the piston member 46 is attached and a hole into which the eccentric shaft 42 is inserted.

<Interlocking part (eccentric shaft)>
The eccentric shaft 42 is provided with an eccentric portion 43 (see FIG. 4), and is arranged in a direction intersecting the cylinder 44 and attached to the connecting member 41. The eccentric shaft 42 may be partially eccentric, for example, a cam shaft to which a cam is attached.

  The first lock portion 27 is disposed above the left end side of the eccentric shaft 42, while the second lock portion 28 is disposed above the right end side. The movable first arm portion 11 and the movable second arm portion 12 are connected to each other between the lock portions 27 and 28, the movable first arm portion 11 is connected to the first lock portion 27, and the movable first arm portion 11 is connected to the movable first arm portion 11. The two arm portions 12 are connected to the second lock portion 28.

  Here, the 1st lock part 27 and the 2nd lock part 28, the movable 1st arm part 11, and the 2nd movable arm part 12 are explained in full detail based on drawing. FIG. 5 shows the lock portions 27 and 28 by disassembling the pillow position fixing device 10 according to the embodiment of the present invention. FIG. 6 shows the arm portions 11 and 12 of the pillow position fixing device 10 according to the embodiment of the present invention in an exploded manner. In addition, since the 1st lock part 27 and the 2nd lock part 28 are the substantially the same structures, below, only the 2nd lock part 28 is demonstrated and description of the 1st lock part 27 is abbreviate | omitted.

<Lock part>
As shown in FIGS. 5 and 6, the second lock portion 28 includes a lock main body portion 29 and a lock guide portion 35. The lock main body 29 includes a grip portion 30 that grips the second arm shaft portion 14 (the second arm shaft portion 14 will be described later), and a flange portion 31 that is connected to the grip portion 30 and opens and closes the grip portion 30. And are provided. On the other hand, the lock guide part 35 is provided with a coiled spring part 36. The lock guide part 35 penetrates the inside of the spring part 36, penetrates the flange part 31 with the spring part 36 interposed therebetween, and moves relative to the flange part 31 in conjunction with the eccentric shaft 42 to open and close the grip part 30. (See FIG. 4).

  The grip portion 30 of the lock main body 29 is formed in a substantially “C” shape when viewed from the side. The grip portion 30 has the second arm shaft portion 14 attached to a gap formed inside the “C” shape and is in close contact with the outer peripheral surface of the second arm shaft portion 14. In addition, a pair of flange portions 31 are connected to the side opened toward the front (right side in FIG. 5B) in the “C-shape”. In the pair of flange portions 31, a lower flange portion 33 and an upper flange portion 32 are formed in a plate shape and face each other. A mounting piece 34 is formed on the lower flange portion 33 toward the left and right sides. When force is applied to the upper flange portion 32 from the upper side toward the lower flange portion 33 side, the lock main body portion 29 bends and approaches the lower flange portion 33 while the grip portion 30 is moved. Closed. On the other hand, when the force applied to the upper flange portion 32 is released, the grip portion 30 is elastically deformed and the upper flange portion 32 returns to the original state.

  The first lock portion 27 has a gap formed inside the “C” shape of the grip portion 130 larger than that of the second lock portion 28 (see FIG. 6), and the first arm The shaft portion 13 (the first arm shaft portion 13 will be described later) is gripped by the grip portion 130. Other configurations are the same as those of the second lock portion 28.

  The lock guide portion 35 has a substantially cylindrical rod shape, and a lower portion 37 that is in contact with the eccentric shaft 42 is thicker than an upper portion 38 that is a side that penetrates the flange portions 32 and 33 of the lock body portion 29. Is formed. That is, the lock guide portion 35 is formed such that the diameter of the upper portion 38 is smaller than that of the lower portion 37, and a boundary portion 39 formed by the difference in diameter is formed at the boundary between the upper portion 38 and the lower portion 37. . The upper portion 38 is passed through the spring portion 36, and the spring portion 36 is locked to the boundary portion 39.

  The lock body 29 and the lock guide 35 configured as described above are attached as follows. That is, as shown in FIG. 4, the lock guide portion 35 is configured so that the lower portion 37 penetrates the partition plate 3 of the backrest portion 1 from the upper side to the lower side and the tip is in contact with the eccentric shaft 42. 3 and a spring portion 36 is attached to the upper portion 38. Plate-like spacers 4 are disposed on the left and right sides of the upper portion 38, and the spacers 4 are attached to the backrest 1 and the partition plate 3. The lock main body 29 is attached to the spacer 4 via the attachment piece 34 in a state where the upper part 38 of the lock guide part 35 penetrates the flange part 31 from below to above and the spring part 36 is compressed. . The upper portion 38 that penetrates the flange portion 31 has a nut portion 40 attached to the tip. The spacer 4 may be integrally formed with the backrest 1 and the partition plate 3.

<Movable first arm>
As shown in FIG. 6, the movable first arm portion 11 is a long member formed in a plate shape, and has a first lock portion 27 (locked) on one end side (side connected to the backrest portion 1). A first arm shaft portion 13 is formed which is gripped by the grip portion 130 of the main body portion 29). The first arm shaft portion 13 protrudes toward the left side (the lower right direction in FIG. 6) and is formed in a columnar shape. The other end side of the movable first arm portion 11 (the side opposite to the first arm shaft portion 13 and to which the connecting shaft portion 21 is connected) is formed in an annular shape, and the connecting shaft portion 21 is inserted inside and connected. Has been.

<Movable second arm>
The movable second arm portion 12 includes a second arm shaft portion 14 held by the holding portion 30 of the second lock portion 28 (lock main body portion 29), and a parallel link 16 connected to the second arm shaft portion 14. The parallel link 16 is connected, and is composed of a connecting shaft portion 21 connected to the other end side of the movable first arm portion 11 and a second arm main body portion 23 connected to the connecting shaft portion 21. ing.

  The second arm shaft portion 14 is formed in a columnar shape, and a disk-shaped arm shaft disk portion 15 is attached to a part of the outer periphery. The connecting shaft portion 21 is formed in a columnar shape, and a disk-like connecting shaft disc portion 22 is attached to the right end (left side in FIG. 6). The parallel link 16 includes a first link member 17 and a second link member 18 that are formed in a longitudinal direction, and a turnbuckle 19 is attached to one side. The parallel links 16 are parallel to each other, and are connected at one end side (side connected to the second arm shaft portion 14) to the arm shaft disc portion 15 of the second arm shaft portion 14 and at the other end. The side (the side to which the connecting shaft portion 21 is connected) is connected to the connecting shaft disc portion 22 of the connecting shaft portion 21. The link members 17 and 18 are connected to each other by a link spring member 20. The second arm main body 23 is a long member formed in a plate shape, the other end side (side to which the connecting shaft portion 21 is connected) is formed in a disk shape, and one end side (opposite the other end side). The pillow portion 2 is connected to the side (the side to which the pillow portion 2 is connected) (see FIG. 4). On the other end side of the second arm main body portion 23, a connecting shaft portion 21 connected to the other end side of the movable first arm portion 11 includes an annular bush 24, an annular hard lock nut 25, and an annular bearing nut spanner. 26 are connected to each other.

  The movable first arm part 11 and the movable second arm part 12 configured as described above are attached as follows. That is, as shown in FIG. 3, in each of the arm portions 11 and 12, the first arm shaft portion 13 and the second arm shaft portion 14 are aligned on the same axis, and the first arm shaft portion 13 is The first arm portion 14 is gripped by the grip portion 130 of the first lock portion 27, and the second arm shaft portion 14 is gripped by the grip portion 30 of the second lock portion 28.

  As described above, the pillow position fixing device 10 is configured. Next, operation | movement of the pillow position fixing apparatus 10 is demonstrated based on drawing. FIG. 7 shows the operation of the pillow position fixing device 10 according to the embodiment of the present invention as viewed from the right side. FIG. 7A shows the operation of the second lock portion 28 and the movable second arm portion 12 stopped. The state (b) is a state in which the stop of the arm portions 11 and 12 is released. In addition, since the operation | movement of the 1st lock part 27 and the 2nd lock part 28 is the same, and operate | moves simultaneously, only the operation | movement of the 2nd lock part 28 is demonstrated below and description of the operation | movement of the 1st lock part 27 is abbreviate | omitted. To do.

  The state in which the lock portions 27 and 28 are activated and the arm portions 11 and 12 are stopped is realized as follows. That is, as shown in FIG. 7A, the piston member 46 is disposed below and the cylinder 44 is contracted, and between the boundary portion 39 of the lock guide portion 35 and the lower flange portion 33. The lock guide portion 35 is pushed downward by the restoring force of the compressed spring portion 36, and the upper flange portion 32 is pushed downward via the nut portion 40 against the restoring force of the grip portion 30. It has been. Each flange part 32 and 33 is pinched | interposed between the compressed spring part 36 and the nut part 40, the space | interval is narrowed, and the holding part 30 is closed. Therefore, the arm shaft parts 13 and 14 of the arm parts 11 and 12 held by the holding part 30 are tightened, and the movements of the arm parts 11 and 12 are both stopped.

  The state in which the lock unit 28 is activated and the stop of the arm units 11 and 12 is released is realized as follows. That is, as shown in FIG. 7B, when the piston member 46 moves upward and the cylinder 44 extends, the connecting member 41 connected to the piston member 46 rotates (rotates clockwise in FIG. 7). At the same time, the eccentric shaft 42 connected to the connecting member 41 rotates. Since the lock guide portion 35 is in contact with the eccentric shaft 42, the eccentric portion 43 is pushed upward by the eccentric portion 43 against the restoring force of the spring portion 36 as the eccentric shaft 42 rotates. At the same time, the flange portions 32 and 33 sandwiched between the compressed spring portion 36 and the nut portion 40 are separated from the lower flange portion 33 because the upper flange portion 32 is separated from the lower flange portion 33 by the restoring force of the grip portion 30. As the distance between the portions 32 and 33 returns to the original state, the grip portion 30 opens. Therefore, the arm shaft portions 13 and 14 of the arm portions 11 and 12 gripped by the grip portion 30 are released from the grip portion 30, and the arm portions 11 and 12 are centered on the arm shaft portions 13 and 14. Rotate to any angle.

  In this state, when the pillow part 2 is moved, each arm part 11 and 12 follows the pillow part 2 and interlock | cooperates. That is, in FIG. 4A, the movable first arm portion 11 rotates around the first arm shaft portion 13 gripped by the grip portion 130 of the first lock portion 27. On the other hand, in FIG. 4B, when the second arm main body portion 23 rotates about the connecting shaft portion 21, the movable second arm portion 12 is connected to the connecting shaft portion 21 as the second arm main body portion 23 rotates. Rotates. The parallel links 16 connected to the connecting shaft portion 21 move in alternate directions with the link members 17 and 18 being displaced. The second arm shaft portion 14 to which the parallel link 16 is connected rotates following the connection shaft portion 21 by the parallel link 16. In this manner, the arm portions 11 and 12 are arbitrarily rotated at the same time around the arm shaft portions 13 and 14 aligned on the same axis, and the pillow portion 2 is moved to an arbitrary position.

  When the lock portions 27 and 28 are activated again, the arm portions 11 and 12 are simultaneously stopped. That is, as shown in FIG. 7A, when the piston member 46 moves downward and the cylinder 44 contracts, the connecting member 41 connected to the piston member 46 rotates (counterclockwise in FIG. 7). ) And the eccentric shaft 42 connected to the connecting member 41 rotates. The lock guide portion 35 that contacts the eccentric shaft 42 is separated from the eccentric portion 43 with the rotation of the eccentric shaft 42, and is pushed downward by the restoring force of the spring portion 36. At the same time, the flange portions 32, 33 sandwiched between the compressed spring portion 36 and the nut portion 40 are repelled by the restoring force of the grip portion 30, and the upper flange portion 32 bends and the lower flange portion 33. And the grip portion 30 closes. Therefore, the arm shaft portions 13 and 14 of the arm portions 11 and 12 gripped by the grip portion 30 are tightened, and the movements of the arm portions 11 and 12 are stopped simultaneously.

  Next, the effect of this embodiment will be described.

  As described above, according to the present embodiment, the cylinder 44 is arranged in a direction in which the piston member 46 moves upward, and the eccentric shaft 42 is disposed at the tip of the piston member 46 in a direction intersecting the cylinder 44. They are connected via a connecting member 41. The first lock portion 27 is disposed above the left end side of the eccentric shaft 42, while the second lock portion 28 is disposed above the right end side. The movable first arm portion 11 and the movable second arm portion 12 are connected to each other between the lock portions 27 and 28, the movable first arm portion 11 is connected to the first lock portion 27, and the movable first arm portion 11 is connected to the movable first arm portion 11. The two arm portions 12 are connected to the second lock portion 28.

  The lock portions 27 and 28 are formed so that the grip portions 30 and 130 of the lock main body portion 29 are substantially “C-shaped” when viewed from the side, and the arm shaft portions 13 and 14 are formed in gaps formed inside. Is attached. In addition, a pair of flange portions 31 are connected to the open side of the “C” shape, and a lower flange portion 33 and an upper flange portion 32 are each formed in a plate shape and face each other. . On the other hand, in the lock guide portion 35, the tip of the lower portion 37 contacts the eccentric shaft 42, and a spring portion 36 is attached to the upper portion 38. The lock body 29 is attached to the flange 31 in a state where the upper part 38 of the lock guide part 35 penetrates from below to above and the spring part 36 is compressed. The upper portion 38 that penetrates the flange portion 31 has a nut portion 40 attached to the tip.

  That is, when the cylinder 44 is driven, the eccentric portion 43 is separated from the lock guide portion 35 as the eccentric shaft 42 rotates, and is pushed downward by the restoring force of the spring portion 36. At the same time, the flange portions 32 and 33 sandwiched between the compressed spring portion 36 and the nut portion 40 are repelled by the restoring force of the gripping portions 30 and 130, and the upper flange portion 32 bends and the lower flange portion is bent. The grip portions 30 and 130 are closed while approaching the portion 33. Therefore, the arm shaft portions 13 and 14 are gripped by the lock portions 27 and 28 in conjunction with the eccentric shaft 42, and the movements of the arm portions 11 and 12 are simultaneously stopped. Therefore, the pillow part 2 can be arrange | positioned in arbitrary positions by stopping a motion with the single cylinder 44 simultaneously.

  According to the present embodiment, each of the parallel links 16 is connected to the arm shaft disc portion 15 of the second arm shaft portion 14 at one end side and to the connection shaft disc portion 22 of the connection shaft portion 21 at each other end side. It is connected. As for the 2nd arm main-body part 23, the pillow part 2 is connected with one end side, and the connection shaft part 21 connected with the other end side of the movable 1st arm part 11 is connected with the other end side. In each of the arm portions 11 and 12, the arm shaft portions 13 and 14 are aligned on the same axis, and the first arm shaft portion 13 is gripped by the grip portion 130 of the first lock portion 27. Is held by the holding portion 30 of the second lock portion 28.

  With this configuration, the connected arm portions 11 and 12 can be arbitrarily operated separately. Further, space saving can be realized, and the periphery of the pillow portion 2 can be designed to be small. Therefore, it is possible to make it easier for a doctor or nurse to work around the otolaryngology medical chair 50 when the patient's head is supported.

  According to this embodiment, the backrest 1 includes the cylinder 44, the eccentric shaft 42 connected to the piston member 46 of the cylinder 44, and the first lock portion 27 and the second lock portion 28 that are interlocked with the eccentric shaft 42. And is provided on the back.

  That is, since each part is provided in the backrest part 1, the periphery of the pillow part 2 can be designed in a small size. Therefore, it is possible to make it easier for a doctor or nurse to work around the otolaryngology medical chair 50 when the patient's head is supported.

  According to the present embodiment, the first arm shaft portion 13 that is gripped by the grip portion 130 of the first lock portion 27 is formed on one end side of the movable first arm portion 11. The first arm shaft portion 13 is formed in a cylindrical shape. The movable second arm portion 12 includes a second arm shaft portion 14 that is gripped by the grip portion 30 of the second lock portion 28. The second arm shaft portion 14 is formed in a cylindrical shape.

  That is, since each arm shaft part 13 and 14 is cylindrical, the movement of each arm part 11 and 12 stops at an arbitrary position by being gripped at an arbitrary angle. Therefore, the pillow part 2 can be arrange | positioned in arbitrary positions, and a fine fine adjustment is attained.

  According to the present embodiment, the switches for driving the cylinders 44 are provided at both ends of the pillow part 2. With this configuration, a doctor or a nurse can operate the switch of the cylinder 44 while grasping and moving the pillow portion 2 by hand. Therefore, the work can be facilitated.

  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 Back part 2 Pillow part 3 Partition plate 4 Spacer 5 Protrusion part 10 Pillow position fixing device 11 Movable 1st arm part 12 Movable 2nd arm part 13 1st arm axial part 14 2nd arm axial part 15 Arm axial disk part 16 Parallel link 17 First link member 18 Second link member 19 Turn buckle 20 Link spring member 21 Connection shaft portion 22 Connection shaft disk portion 23 Second arm main body portion 24 Bush 25 Hard lock nut 26 Bearing nut spanner 27 First lock Part 28 Second lock part 29 Lock body part 30, 130 Grip part 31 Flange part 32 Upper flange part 33 Lower flange part 34 Mounting piece 35 Lock guide part 36 Spring part 37 Lower part 38 Upper part 39 Boundary part 40 Nut part 41 Connecting member 42 Eccentric shaft (interlocking part)
43 Eccentric part 44 Cylinder (drive part)
45 Cylinder member 46 Piston member 50 Otolaryngological medical chair 51 Seat 52 Backrest body

Claims (8)

A pillow that is movable relative to the back of the chair;
A movable first arm connected to the backrest side;
A movable second arm connected to the movable first arm and connected to the pillow;
A first lock portion for stopping the movement of the movable first arm portion;
A second lock portion for stopping movement of the movable second arm portion;
An interlocking portion for simultaneously interlocking the first lock portion and the second lock portion;
A drive unit for interlocking the interlocking unit,
A pillow position fixing device characterized by that. The drive unit and the interlocking unit are provided on the back of the chair back,
The pillow position fixing device according to claim 1, wherein: A first arm shaft portion provided in the movable first arm portion and coupled to the first lock portion;
A second arm shaft portion provided on the movable second arm portion and coupled to the second lock portion; and
The first arm shaft portion is gripped by the first lock portion, and the second arm shaft portion is gripped by the second lock portion.
The pillow position fixing device according to claim 1 or 2, wherein the pillow position fixing device is provided. The second lock portion is
A gripping part for gripping the second arm shaft part;
A flange portion connected to the grip portion to open and close the grip portion;
A lock guide portion that is provided through the flange portion, interlocks with the interlock portion, and opens and closes the grip portion by moving with respect to the flange;
The second lock part is provided on the backrest part,
The pillow position fixing device according to claim 3, wherein: The first arm shaft portion and the second arm shaft portion are provided on the same axis,
The movable second arm portion is
A parallel link connected to the second arm shaft;
The parallel link is connected, and the connecting shaft portion connected to the opposite side of the first arm shaft portion in the movable first arm portion;
A second arm main body connected to the connecting shaft, and
The pillow position fixing device according to claim 3 or 4, wherein the pillow position fixing device is provided. The drive is a single cylinder;
The interlocking part is a shaft connected to a piston of the cylinder and provided with an eccentric part;
The pillow position fixing device according to any one of claims 1 to 5, wherein the pillow position fixing device is provided. A switch for driving the drive unit is provided at both ends of the pillow unit,
The pillow position fixing device according to any one of claims 1 to 6, wherein the pillow position fixing device is provided. A pillow position fixing device according to any one of claims 1 to 7 is provided,
Otolaryngological examination chair characterized by that.