JP3376660B2 - Dental unit main tube dripping prevention and retraction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main tube sag prevention / retraction device having a structure in which the instrument main tube of a dental unit is always pulled backward.

[0002]

2. Description of the Related Art D near instrument table of a conventional dental unit D (FIG. 6)
Then, when the instrument 1 is stored in the instrument holder 3 at the lower front portion thereof, the main tube 2 to be connected hangs down as shown in the drawing, and depending on the usage state of the table 4, the main tube 2 may contact the floor surface F. When the instrument 1 is operated by rubbing it, the main tube 2 itself becomes dirty or scratched, which is unsanitary and has a problem that is unfavorable in recent infection control measures. Further, when the instrument 1 is pulled out toward the front and used, and then the main tube 2 is pulled back to store the instrument 1 in the instrument holder 3, a dirty portion contacting the floor surface of the main tube 2 is used. Slidably contacts the surface of the instrument holder 3 to stain the surface, and again, the main tube 2 which is going to hang down comes into contact with the holder 3 and is caught, so that smooth storage cannot be performed and it is troublesome to store. It also had a problem that it could not be treated smoothly.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a drooping prevention / retraction device in which the main tube is constantly urged to be pulled rearward of the instrument table. It is what That is, according to the present invention, a mounting bracket is provided on the rear side of the instrument table , and a mainspring is attached to the mounting bracket.
And suspend it at the tip of the spring and
Attach a pulley that moves in the pull-out direction and attach the pulley to the pulley.
It is constructed by hanging a tube, and the main tube that tends to hang down is always urged to pull it backward so that the main tube does not touch the floor surface and the instrument at the end of the main tube is instrumented. Te
Anti-sagging and retraction device der of the main tube of the dental unit being characterized in that none to be easily stored in the mounted instrument holder beneath the front of the bull Ru. Et al is, in the above invention, each is interposed a plurality of spiral spring and the pulley at the rear instrument table in correspondence with a plurality of main tube, it is desirable to configure as increased tensile backwards for each tube.

[0004]

Embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a state diagram in which the main tube is pulled up rearward by this device, Fig. 2 is a perspective view of the main structure of the mainspring and pulley.
FIG. 3 is a sectional view of the structure of the main part of FIG. 2, FIG. 4 is a state diagram in which the instrument is pulled out forward, and FIG. 5 is a perspective view in which the present device is interposed between a plurality of main tubes. In the figure, 1 is an instrument, 2 is a main tube, 3 is an instrument holder, 4 is an instrument table, 5 is a mounting bracket, 7 is a mainspring, and 9 is a pulley. D is near the table of the dental unit, F is the floor, and C is
Is a chair. On the lower front side of the table 4 near the table D of the dental unit, the instrument holder 3
The dental treatment instrument 1 connected to the tip of the main tube 2 can be inserted and placed on the holder 3. The rear end of the main tube 2 is connected and fixed to a tube joint 2a on the lower surface of the instrument table 4.

Behind the instrument table 4,
A mounting bracket 5 formed by bending a wire is provided so as to project, and a spring case 6 containing a mainspring 7 biased in the winding direction A is fixed to the mounting bracket 5. Further, the tip 7 of the mainspring 7 is pulled out in the B direction against the biasing force in the A direction (FIG. 3).
a is a bifurcated pulley frame 8 that holds the pulley 9 rotatably.
Are connected. The outer periphery of the pulley 9 is formed in a groove shape so as to be rotatable along the main tube 2. The main tube 2 is slidably inserted into the inside of a pulley 9, is hung on the pulley 9 biased in the direction A by a mainspring 7, and is always pulled backward. Figure 1
Shows the state in which the main tube 2 is pulled up rearward by the mainspring 7 and the pulley 9 when the instrument 1 at the tip is placed on the instrument holder 3, but the floor surface F It is hoisted high enough against and there is no risk of contact.

Next, as shown in FIG. 4, when the instrument 1 at the tip of the main tube 2 is pulled out forward from the instrument holder 3 for treatment, the main tube 2 pulled backward is pulled out forward. , Pulley 9
Sliding friction occurs between and, and the pulley 9 is pulled out forward while curving around the pulley 9. Pulley 9 to pulley frame 8
Although the mainspring 7 is pulled out forward (direction B) via the spring, since the spring 7 has an urging force in the winding direction (direction A), the main tube 2 is always pulled backward and the main tube 2 hangs down. It is pulled forward without touching the surface. Further, when it is desired to return the pulled-out instrument 1 to the instrument holder 3 and place it on the instrument holder 3, the main tube 2 is pulled rearward by the mainspring 7, so that the pulling force can be used easily. It can be pulled back and placed and stored in the holder 3. When the tube 2 is pulled out and pulled back, the tube 2 is suspended, so there is no risk of being caught by the holder 3.

Further, as shown in FIG. 5, in a dental unit equipped with five instruments 1, five spring cases 6 are attached to a mounting bracket 5 at the rear of the table 4, and a spring spring is attached to each of them. 7 is installed inside, a pulley 9 is attached to the tip end portion 7a, and five tubes 2 are individually pulled up rearward to prevent any of the tubes 2 from hanging down, and to be pulled out from the holder 3 and drawn into the holder 3. Has become easier.

[0008]

Since, according to the invention the apparatus is of a configuration described above, Maema
It is attached to the tip of the spring and its winding direction and withdrawal
The pulley that moves in the forward direction always pulls the main tube rearward, so that it does not hang down and come into contact with the floor surface and rub against it, making it extremely hygienic. In addition, the instrument can be pulled out and stored easily, and there is no risk of the tube getting caught in the holder, which contributes to improvement in treatment efficiency.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which a main tube is pulled backward by an apparatus according to an embodiment of the present invention.

FIG. 2 is an inclined view of the main structure of the mainspring and pulley.

3 is a cross-sectional view of the main parts of FIG.

FIG. 4 is a state diagram in which the instrument is pulled out forward.

FIG. 5 is a perspective view of a dental unit in which the device of the present embodiment is interposed in a plurality of main tubes.

FIG. 6 is a state diagram in which a conventional instrument hangs down.

[Explanation of symbols] 1 instrument 2 main tube 2a tube joint 3 instrument holder 4 instrument table 5 mounting bracket 6 spring case 7 mainspring 7a tip part 8 pulley frame 9 pulley D table near dental unit F floor Surface C Chair A Roll-in direction B Pull-out direction

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Claims (2)

(57) [Claims] [Claim 1] attached to the rear of the instrument table
The bracket is projected, and the mainspring is suspended on it.
And the direction of winding and pulling the spring at the tip.
Attach the pulley that moves in the direction, and hang the main tube on the pulley.
The main tube that is going to hang down is always urged so as to pull it up rearward so that the main tube does not come into contact with the floor surface, and the instrument at the end of the main tube is placed on the instrument table. Downward
A device for preventing the main tube of a dental unit from sagging and retracting, which can be easily stored in an instrument holder mounted on the front surface . 2. The inline corresponding to a plurality of main tubes
Behind the instrument table, a plurality of mainsprings
Pulleys are pulled up rearward for each tube with each pulley interposed
The dentistry according to claim 1, characterized in that
Prevention unit for the main tube of the unit
Place