JPH0796012A - Head rest inclination adjusting device for medical table or the like - Google Patents

Abstract

PURPOSE:To freely set the inclination of the head rest inclination adjusting device for medical table or the like with no stage and to prevent a locking operation device from obstructing the treatment of an operator. CONSTITUTION:A circular arc supporting angle shaft 5 is fitted to a back plate 1 and protruded in the state of internal bending, a circular arc supporting angle cylinder 3 is fitted to the circular are supporting angle shaft 5 so as to be freely slid, a head rest 2 is supported by inserting a pedestal 3a at the upper part of the circular arc supporting angle cylinder 3 into a recessed part 2a on the rear face of the head rest 2, and a roller wedge type locking device is embedded at the side part of a circular arc guide angle groove 4 of the circular arc supporting angle cylinder 3 for guiding the circular arc supporting angle shaft 5. Then, the side face of the circular arc supporting angle shaft 5 is locked by that locking roller 6 so as to lock the inclination, and a canceller stand 9 is installed on the rear face of the pedestal 3a so as to embed the canceller stand 9 at the recessed part 2a on the rear face of the head rest 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual tilt adjusting device for a treatment table, characterized in that an armrest base is adjustable to an arbitrary inclination.

[0002]

2. Description of the Related Art In the conventional manual tilting adjusting device for an armchair, a guide tube having an arcuate guide groove is projected from the back plate and is installed under the armrest. A circular arc-shaped support shaft is slidably fitted into the guide cylinder, a large number of ratchet teeth are engraved on the lower peripheral surface of the support shaft, and a ratchet pawl that meshes with the ratchet teeth is formed on the main portion of the guide cylinder. The operating handle of a locking device that is pivotally installed and projects at the base of the table is used to adjust the inclination of the table by turning the ratchet pawl into and out of engagement with the ratchet teeth. However, since the conventional device is adjusted by the engagement of the ratchet teeth and the ratchet pawl, it becomes a stepwise tilt adjustment, and it is difficult to adjust the tilt required for treatment steplessly. Further, since the operating handle of the locking device is projected from the base of the armrest base, the range of inclination adjustment is limited, which interferes with the surgeon's operation during treatment and where he / she is, and sometimes touches the operating handle. This caused a problem that the tilt mechanism was unlocked.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and uses a roller wedge type locking device R as a tilt locking device to enable stepless tilt adjustment, and an unlocking device F thereof. So as not to interfere with the operator by burying it in the recess 2a on the back surface of the head rest 2.
Eliminates the risk of contact and obviates the problem of tilt adjustment. That is, the present invention is provided with a head rest 2 mounted on a back plate 1 such as a treatment table.
In the tilt adjusting device of FIG. 1, an arc-shaped support square tube 3 for supporting the head rest 2 and an arc-shaped support square tube projecting from the back plate 1 and slidably fitted into the arc-shaped support square tube 3 are provided. A shaft 5 and a roller wedge type locking device R provided inside the arcuate support square cylinder 3 and capable of wedge-locking the tilting of the arcuate support angular shaft 5 by its lock roller 6, and a manual unlocking device thereof. An armrest tilt adjusting device for a treatment table or the like characterized by comprising F and F. Further, in the device of the present invention, the arc-shaped support square tube 3 has the arc-shaped guide rectangular groove 4 provided in the lower portion of the pedestal 3a for supporting the headrest 2 so as to be buried in the back surface recess 2a. An arcuate support angular shaft 5 formed by connecting the box 3b connects the arcuate angular shaft 5a slidable in the arcuate guide angular groove 4 and a mounting member 5b to the back plate 1. The roller wedge type locking device R is formed so that the side surface of the arcuate support angular shaft 5 sliding in the arcuate guide angular groove 4 is wedged by the lock roller 6 and the unlocking device F releases it. The device base 9 is installed on the back surface of the pedestal 3a, the manual operation button 9b is fitted to the release device base 9, and the manual operation of the operation button 9b and the wedge stop of the lock roller 6 are interlocked with each other to operate the operation button 9b. When pushed by hand, the wedge of the lock roller 6 is released and the head rest 2 can be tilted. Release the operation button 9b locking roller 6 was sealed wedge by the spring 8, can be made with optimum to the tilt adjustment by configuring as to lock the tilting of Yasuatamadai 2. Further, in the device of the present invention, the release device base 9 installed on the back surface of the pedestal 3a for supporting the safety pedestal 2, the cylindrical operation button 9b fitted to the release device base 9, and the operation button 9b are provided. A conical cam 9c shaped and pivotally mounted on the releasing device base 9 so as to be swingable, and a confronting roller 9d of the conical cam 9c is attached to one end of the conical cam 9c, and the other end is arcuate The release link 9e protruding in the guide square groove 4 and the arc-shaped guide square groove 4
An arcuate lock release that is slidable in a recessed groove 10a that is dug along with one end of which abuts on the protrusion 9f of the release link 9e and the other end of which abuts on the lock roller 6 in the wedge chamber 7. It is desirable that it is provided with the square bar 10 and that the pushing of the operation button 9b and the wedge of the lock roller 6 are interlocked with each other in terms of simplicity and simplicity.

[0004]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a longitudinal sectional view showing a state in which the device of the present invention is installed, FIG. 2 is a plan development sectional view of the device of the present invention taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. 4 is a sectional view taken along the line C-C of FIG. FIG. 5 is an overall perspective view of the device of the present invention. In the figure, 1 is a back plate, 2 is an arm rest, 3 is an arc-shaped support rectangular tube, 4 is an arc-shaped guide angular groove, 5 is an arc-shaped supporting angular axis,
6 is a lock roller, 7 is a wedge chamber, 8 is a spring, 9 is a release device stand, and 10 is an arc-shaped unlocking square bar. As shown in FIG. 1, basically, the tilting adjustment device for an arm rest such as a treatment table according to the present invention has an arc-shaped supporting angular shaft 5 attached to a back plate 1 so as to project in an inwardly curved state, and the arc-shaped supporting angular shaft 5, the arc-shaped support square tube 3 is slidably fitted to the arc-shaped support square tube 3
The pedestal 3a in the upper part of the table is inserted into the rear surface recess 2a of the safety pedestal 2 to support the safety pedestal 2 and the arc-shaped support angular tube 3 of the arc-shaped support rectangular tube 3 which guides the arc-shaped support angular shaft 5. A roller wedge type lock device R is embedded in the side of the lock roller 6, and the lock roller 6 wedges the side surface of the arc-shaped support angular shaft 5 to lock the tilt, and the release device base 9 is provided on the back surface of the pedestal 3a.
Is installed so that the release device base 9 is embedded in the back surface recessed portion 2a of the safety head base 2, and the operation button 9b fitted on the release device base 9 is pushed by hand, the conical cam 9c, the contacting Arc-shaped lock release square bar 1 via roll 9d and release link 9e
0, the lock roller 6 in the wedge chamber 7 is projected to release the lock so that the safety table 2 can be tilted, and when the operation button 9b is released, the lock roller 6 is wedged by the spring 8 and its tilting is performed. It is structured like a lock.

The above-mentioned arc-shaped supporting rectangular tube 3 is provided with a flat plate-shaped pedestal 3a for mounting the headrest 2 on the upper part, and an arc-shaped rectangular box 3b in which a circular arc-shaped guiding square groove 4 is provided in the lower part. And the arc-shaped rectangular box 3b is covered with an arc-shaped cover plate 3c. The arcuate support angular shaft 5 is formed by connecting a slidable arcuate angular shaft body 5a in the arcuate guide angular groove 4 and a mounting member 5b to the back plate 1, and the mounting member 5b.
Is fixed to the back plate 1 by screwing, the arc-shaped rectangular shaft body 5a is projected from the back plate 1, and the arc-shaped support rectangular tube 3 is slidably inserted. Further, since the back rest 2 has a back recess 2a, and the back recess 2a has a sufficient depth, the pedestal 3a is sufficiently inside the back recess 2a when supporting the back rest 2. The release device base 9 (which will be described below) that is buried and is installed on the back surface of the pedestal 3a is also buried. The roller wedge type lock device R is provided in a wedge-shaped wedge chamber 7 which is recessed in the middle of a side surface of an arcuate guide angular groove 4 provided in the arcuate support rectangular tube 3. In the wedge chamber 7 having a taper surface, the lock roller 6 is biased in a direction to be pushed into the taper surface via the contact plate 6a and the spring 8, and the side surface of the arc-shaped support angular shaft 5 is moved in the arc-shaped guide angular groove 4. Wedge lock to lock tilt.

Next, the lock release device F for releasing the wedge lock by the lock roller 6 is a pedestal 3a for supporting the head rest 2.
Release device base 9 installed on the back surface of the device, a cylindrical operation button 9b fitted to the release device base 9, and the operation button 9
a conical cam 9c formed in b and a pivoting device pivotally mounted on the release device base 9 so that one end of the conical cam 9c is attached with a contact roller 9d of the conical cam 9c, and the other end of the arc-shaped support square cylinder 3 is attached. The release link 9e that projects into the arc-shaped guide square groove 4 and the recessed groove 10a that is dug along the arc-shaped guide square groove 4 are slidable, and one end of the release link 9e protrudes from the release link 9e. 9f, and an arc-shaped unlocking angle bar 10 having the other end in contact with the lock roller 6 in the wedge chamber 7, and when the operation button 9b is manually pushed, the conical cam 9c, the contact roller 9d, and the release link 9e. , The arc-shaped unlocking angle bar 10 that contacts the protruding portion 9f in this order, pushes the lock roller 6 back against the biasing force of the spring 8 at the tip of the arc-shaped unlocking angle bar 10, and pushes it toward the tapered surface. Release push and lock low By releasing the wedging of over 6 it is configured as a tiltable Ahn head base 2. Further, a locking groove 5c is dug in the bottom of the arc-shaped support angular shaft 5 so that the arc-shaped support angular shaft 5 does not come out of the arc-shaped support angular tube 3 when tilting,
The stopper plate 5 of the arc-shaped cover plate 3c is screwed to the stopper pin 5d.
Hit d. When the operation button 9b is released, the lock roller 6 is wedged again by the urging force of the spring 8. At that time, the lock roller 6 is pushed into the tapered surface, and at the same time, the arc-shaped unlocking square rod 10 is pushed back and, conversely, the operation button 9b is restored. A window 3e is opened at the upper end of the arc-shaped cover plate 3c so that the release link 9e can be swung by projecting into the arc-shaped support rectangular tube 3. Further, since the arc-shaped unlocking square rod 10 is embedded in the concave groove 10a and slides, its tip is bent into an L shape so as to easily contact the protruding portion 9f of the releasing link 9e.

[0007]

According to the tilting head adjusting device of the present invention, the tilting head can be freely adjusted to a required angle, so that it has an optimum effect for the treatment of the operator. Further, with the roller wedge type locking device of the present invention, complicated machining of the ratchet portion as in the conventional case is eliminated, and the number of machining holes can be greatly reduced. In addition, since the release device base and the operation button are installed on the back side of the safety box by being buried in the recess on the back side of the safety table, there is no possibility of contact with the surgeon during treatment and there is no risk of contact with the operator. The adjustment range of can be large.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state in which a device of the present invention is installed.

FIG. 2 is a plan development view of the device of the present invention taken along the line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line C-C in FIG.

FIG. 5 is an overall perspective view of the device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Back plate 2 Anvil base 2a Back surface recessed part 3 Arc-shaped support square tube 3a Pedestal 3b Arc-shaped rectangular box 3c Arc-shaped cover plate 3d Stop plate 3e Window 4 Arc-shaped guide angular groove 5 Arc-shaped supporting angular shaft 5a Arc-shaped angle Shaft 5b Mounting member 5c Locking groove 5d Locking pin 6 Lock roller 6a Abutting plate 7 Wedge chamber 8 Spring 9 Release device stand 9b Operation button 9c Conical cam 9d Contact roller 9e Release link 9f Projection 10 Arc-shaped unlocking square bar 10a Recessed groove R Roller wedge type lock device F Lock release device

Claims (3)

[Claims] 1. A head rest 2 mounted on a back plate 1 of a treatment table or the like.
In the tilt adjusting device of FIG. 1, an arc-shaped support square tube 3 for supporting the head rest 2 and an arc-shaped support square tube projecting from the back plate 1 and slidably fitted into the arc-shaped support square tube 3 are provided. A shaft 5 and a roller wedge type locking device R provided inside the arcuate support square cylinder 3 and capable of wedge-locking the tilting of the arcuate support angular shaft 5 by its lock roller 6, and a manual unlocking device thereof. An armrest tilt adjustment device for a treatment table or the like, which is characterized by comprising F and F. 2. An arc-shaped rectangular box body in which an arc-shaped support rectangular tube 3 is provided inside a pedestal 3a for supporting the headrest 2 so as to be buried in the back surface recess 2a thereof, and an arc-shaped guide rectangular groove 4 is provided therein. An arc-shaped support angular shaft 5 is formed by connecting 3b, and an arc-shaped angular shaft body 5a slidable in the arc-shaped guide angular groove 4 and a mounting member 5b to the back plate 1 are connected. The roller wedge type locking device R wedges the side surface of the arcuate support angular shaft 5 sliding in the arcuate guide angular groove 4 with its lock roller 6, and the lock release device F releases the unlocking device base. 9 is installed on the back surface of the pedestal 3a, a manual operation button 9b is fitted to the release device base 9, and the manual operation of the operation button 9b and the locking of the lock roller 6 are interlocked, and the operation button 9b is manually operated. When pushed, the wedge of the lock roller 6 is released to make the safety head 2 tiltable, and 2. The apparatus for tilting a safe table as claimed in claim 1, wherein the lock roller 6 is wedged by the spring 8 when the tongue 9b is released, and the tilt of the safe table 2 is locked. 3. A release device base 9 installed on the back surface of a pedestal 3a supporting the safety mount 2, a cylindrical operation button 9b fitted to the release device base 9, and an operation button 9b. A conical cam 9c is provided, and is pivotally mounted on the releasing device base 9 so as to be swingable. A confronting roller 9d of the conical cam 9c is attached to one end of the conical cam 9c, and the other end is arcuately guided by the arcuate support square cylinder 3. Square groove 4
The release ring 9e that protrudes inward and the groove 10a that is dug along the arc-shaped guide square groove 4 are slidable, and one end of the release ring 9e abuts the projection 9f of the release link 9e. An arc-shaped unlocking square bar 10 having an end abutting against the lock roller 6 in the wedge chamber 7 is provided, and the manual push of the operation button 9b and the wedge stop of the lock roller 6 are interlocked with each other. The tilting adjustment device for the armrest base such as the treatment table described in.