JP2935935B2 - Dental treatment unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental treatment unit, and more particularly, to a dental treatment unit in which an instrument holder for an assistant is attached to a fixed member via an arm. The present invention relates to a dental treatment unit safety device that prohibits the operation of the dental treatment unit when the above force is applied.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing an overall configuration of an example of a dental treatment unit to which the present invention is applied. In the figure, reference numeral 10 denotes a dental treatment unit, and the unit 10 comprises a treatment chair 1, a work table 2, It comprises a spittoon 3, an operating light 4, an instrument holder 5, a foot switch 6, an assistant instrument holder 7 and the like. The instrument holder 5 accommodates various instruments 8 used in dental treatment. As is well known, in performing dental treatment, a patient sits on a chair 1 and fixes his / her head on an abutment 9 to receive treatment. During treatment, the operator moves the treatment chair 1 up and down,
The patient is placed in an easy-to-treat posture by inclining or tilting the patient, and treatment is performed.

[0003] The assistant holder 7 is provided with a vacuum tube, a saliva drainage tube 11 and the like, and is configured to suck and discharge sewage, saliva and the like generated in the oral cavity of the patient during treatment. The assistant holder 7 is of a stand-alone type, but as shown in the figure, there is also one which is fixed to a fixing member, for example, a spitton water supply / drain volume 13 through an arm 12.

[0004]

Thus, in the dental treatment unit, a work table 2 for placing a medical solution or the like within a reach of the surgeon in order to perform the treatment, and a treatment table for treatment. The instrument 8 and the instrument 11 for sucking water, saliva and the like in the oral cavity of the patient are required.
The instrument 11 for sucking water, saliva and the like in the oral cavity of the patient is usually accommodated in the holder 7 by the arm 12 from the assistant side, and is often movable within the reach of the surgeon. For this reason, the arm 12 has a considerable degree of freedom, and if the arm is moved while the arm is stuck on a chair or the like or hits another obstacle, the arm or the object hitting the arm is damaged. There is a risk of doing it. For this reason, when there is an obstacle under the arm 12, the arm 12 is raised and the safety switch is operated by the movement of the arm 12 to stop the operation of the chair. However, if the instrument holder for the assistant is moved (falls down) when the instrument holder for the assistant is behind the back plate of the chair, the arm 12 is pushed from above, and the safety switch does not work. There is a drawback that they may be damaged.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. (1) An instrument holder for an assistant is fixed to an arm base receiving member via an arm. in dental care unit arm original receiving member is attached to the stationary member, the a
The original support member of the arm was mounted horizontally on the fixed member
The arm base receiving member is rotatably mounted around a fixed shaft , and the arm base receiving member is attached to the fixed member between the fixed shaft of the arm base receiving member and the arm mounting part. It has a detecting means for detecting the vertical displacement of the arm base receiving member at the distal end side, which is supported by the action point member,
When the detecting means displaces the tip of the arm base receiving member by a predetermined amount, the operation of the dental treatment unit is prohibited.
In the dental treatment unit, the action point member is
Position between the rotating part of the arm base receiving member and the arm mounting part.
It is characterized by being adjustable in position, and furthermore
(2) The arm base receiving member is provided on the distal end side of the arm base receiving member.
A member for restricting the amount of movement of the arm base receiving member facing the member;
It has a topper member. Hereinafter, an embodiment of the present invention will be described.

[0006]

[Action] Whether the instrument holder for assistants is pushed from above or below from the movement of the chair,
A safety switch is activated to stop the chair from moving, preventing the instrument holder for the assistant and other damage.

[0007]

FIG. 1 is a schematic view of a main part of a dental treatment unit to which the present invention is applied, and FIG. 2 is a structural view of a main part for explaining an embodiment of the present invention (a detailed view in a part II in FIG. 1). In the figure, parts having the same functions as those shown in FIG. 3 are denoted by the same reference numerals as in FIG.

FIG. 1 is a structural view of a main part of a dental treatment unit to which the present invention is applied as described above. In the prior art, an instrument holder 7 for an assistant is used.
Is fixed to a fixed part, for example, a spitton water supply / drainage box 13 via an arm 12, and when a force from below (in the direction of arrow B) is applied, the entire instrument holder for assistant rotates, whereby The operation of the operating member, for example, the operation such as the up and down movement of the treatment chair, the inversion start, the inclination movement, etc., is immediately stopped.

However, when a force is applied from above (in the direction of arrow A), specifically, when the back plate of the treatment chair is lowered,
When the treatment chair hits the upper side of the instrument holder 7 or the arm 12 of the assistant and pushes down the instrument holder 7 or the arm 12 of the assistant, means for detecting such force is provided. And the device could be damaged.

The present invention has been made in order to solve the above-mentioned problems. In particular, when a force is applied from above the instrument holder 7 for assistants, the force is detected and applied. Is to be stopped.

In FIG. 2, reference numeral 20 denotes an arm base receiving member.
The arm base receiving member 20 is rotatably mounted on a fixed member, for example, a spitton water supply / drain box 13 around a shaft 21, and is supported by an action point member 22 so as to stop at a predetermined position. I have. This arm base receiving member 2
The arm 12 of the instrument holder for the assistant is attached to the free end side of the shaft 0 (the side opposite to the shaft 21 with respect to the action point member 22), whereby the instrument holder 7 for the assistant is positioned at a predetermined position. It is kept in.

Here, when a force in the direction of arrow A is applied to the instrument holder 7 for the assistant (therefore, the arm 12), the arm base receiving member 20 is moved to the action point member 22.
, The tip of the arm base receiving member 20 is displaced in the direction of arrow C. This displacement amount is detected by an optical, mechanical, or electrical position desired means by an optical sensor, a level sensor, a strain sensor, etc., and when a force exceeding a predetermined amount is applied, an alarm is generated, Further, the movement of the moving object, for example, the treatment chair is stopped.

Now, when the instrument holder 7 for the assistant (accordingly, the arm 12) receives a force in the direction of arrow B, the arm base receiving member 20 rotates about the shaft 21 and moves in the direction of arrow D. Since the displacement is detected, the displacement is detected by the displacement detection member 23. If the displacement is equal to or more than the predetermined amount, an alarm is generated as described above, and the movement of the moving object is stopped.

In the illustrated example, a strain gauge 23a is used as the detecting means 23 for detecting the displacement of the distal end of the arm base receiving member 20, and the strain of the strain gauge 23a is used to detect the displacement of the arm base receiving member 20. Although the amount of displacement of the tip is detected, as this detection means,
As described above, any desired detection means can be used without being limited to the illustrated example.

In FIG. 2, reference numeral 24 denotes a stopper.
When moving in the direction, the arm base receiving member 20 does not move much, thus ensuring safety.

[0016] In Thus, the keep movable adjusting the working point member 22 which is disposed in the direction of the arrow E between the arm attachment portion P and the rotation support portion of the arm original receiving member 20, in addition to the arm 12 It is possible to adjust the relationship between the applied force and the amount of displacement of the arm base receiving member 20 at the leading end detection section,
The degree of freedom in selecting the material of the arm base receiving member 20 is increased. The movement of the distal end of the arm base receiving member 20 is restricted by the stopper 24 for upward movement, and the downward movement is restricted by the portion 13a of the fixing member 13, whereby the arm base receiving member is moved. Excessive movement of the arm 20 can be prevented, damage to the arm base receiving member 20 can be prevented, and resilience can be maintained.

[0017]

As is clear from the above description, according to the present invention, even if a load is applied to the instrument holder for the assistant or its arm in the upward or downward direction by the movement of the chair or the like, the chair moves. Can be stopped,
There is no need to restrict the arm, the amount of movement of the arm can be increased, and it is possible to cope with various medical body shapes of the operator. In addition, there is an advantage that the arm and the like are not damaged, so that the arm can be used with ease.

[Brief description of the drawings]

FIG. 1 is a schematic view of a main part of a dental treatment unit to which the present invention is applied.

FIG. 2 is an essential part (FIG. 1) for explaining an embodiment of the present invention;
II) is a configuration diagram.

FIG. 3 is an overall configuration diagram of a dental treatment unit to which the present invention is applied.

[Explanation of symbols]

7 ... Instrument holder for assistant, 12 ...
Arm 13 gargle water supply / discharge box 20 arm receiving member 21 rotating support shaft 22 working point member 23
... Detecting means, 24 ... Stopper.

Claims (2)

(57) [Claims] 1. A dental treatment unit in which an instrument holder for an assistant is fixed to an arm base receiving member via an arm, and the arm base receiving member is attached to the fixing member, wherein the base receiving member of the arm is the same as the base member. Fixing member
The arm base receiving member is attached to the fixed member between the fixed shaft of the arm base receiving member and the arm mounting portion. And a detecting means for detecting a vertical displacement of the arm base receiving member at the tip end side, and a tip of the arm base receiving member is displaced by a predetermined amount by the detecting means. dental care unit smell sometimes have so as to prohibit the operation of the dental care unit
The action point member is in contact with the rotating portion of the arm base receiving member.
The position can be adjusted between the arm mounting part
And dental treatment unit. 2. A method according to claim 1, wherein further comprising a stopper member for restricting the movement amount of in opposition to the arm based receiving member on the distal end side of the arm original receiving member said arms original receiving member
Dental treatment unit.