JPH07299104A - Apparatus for preventing main tube of unit for dentistry from sagging and for energizing to pull it in - Google Patents

Abstract

PURPOSE:To prevent a main tube in a conventional unit for dentistry from sagging and from being hooked when an instrument is stored. CONSTITUTION:A bracket 5 for fixing is mounted on the rear side of a table 4 and a spring case 6a is fixed on the rear side of the bracket 5 and a double- wound clockwork spring apparatus 6 is built in the spring case 6a. A wire roller 8a is freely rotatably projectedly provided on its rear end to energize a clockwork spring 7 in the winding direction (the direction A) and the wire 8 is energizeed in the same direction as that for the spring 7 through a spring roller 7a which plays a role also as a spring and a hanging ring-type pulley 9 on the apex of the wire 8 is pulled up backward through the wire roller 8a and an inserted main tube is always pulled to prevent it from sagging.

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-preventing and retracting urging device having a construction in which a main tube for instruments of a dental unit is always pulled up rearward via a suspension ring pulley.

[0002]

2. Description of the Related Art In the vicinity of the instrument table D (FIG. 7) of a conventional dental unit, the instrument holder 3 at the lower front portion thereof is located.
When the instrument 1 is stored in, the connected main tube 2 hangs down as shown in the figure, and depending on the usage state of the table 4, the main tube 2 comes into contact with the floor surface F and rubs to operate the instrument 1. When doing so, the main tube 2 itself is dirty and scratched, which is unsanitary and has a problem that is unfavorable in recent preventive measures for nosocomial infections. In addition, when the instrument 1 is pulled out to the front and then the main tube 2 is pulled back to store the instrument 1 in the instrument holder 3, the dirty portion in contact with the floor surface of the main tube 2 is removed. Sliding the surface of the instrument holder 3 to make it dirty, and again, the main tube 2 that is going to hang down comes into contact with the holder 3 and is caught, and smooth storage cannot be performed. There was a problem that the treatment could not be performed smoothly and the treatment time wasted.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems and provides a suspension ring type pulley in which the instrument main tube of a dental unit is connected to the tip of a wire. An object of the present invention is to provide a device for preventing the main tube from sagging and pulling in the device, which is constructed so as to be always pulled up rearward through the device. That is, the means for solving the above problems are as follows. (1) At the rear of the instrument table, a wire tensioned via a wire roller and a mainspring spring device that urges the wire as it is wound are projected, and a suspension ring pulley is connected to the tip of the wire. Then, the main tube is slidably hooked, and the main tube is constantly urged to pull it backwards to prevent the main tube from hanging down, and the pulled-out instrument can be easily placed in the instrument holder. An energizing device for preventing the main tube of a dental unit from sagging and retracting, which can be stored. (2) Corresponding to a plurality of main tubes, a plurality of two-stage spiral spring devices are provided in the rear of the instrument table, and each main tube is always pulled rearward via a suspension ring pulley. (1) The main tube of the dental unit according to (1), wherein the main tube is prevented from sagging and is retracted. (3) A suspension ring type pulley having a large number of abacus bead rollers inserted through a round ring, wherein (1) or (2) the main unit of the dental unit is prevented from sagging and is drawn in by a biasing device. . (4) The hanging tube type pull-down and pull-in urging device of the dental unit as set forth in (1) or (2), wherein the hanging wheel type pulley has a plurality of wrapping type rollers inserted through a round wheel.

According to the above-mentioned solution means, when the instrument is stored in the instrument holder as shown in FIG. 1, the main tube which is going to hang down is urged by the spring spring device (two-stage winding). It is pulled up while sliding in the suspension ring type pulley, and it is hooked where the biasing force of the spring and the weight of the main tube are balanced, so the conventional hanging of the main tube is prevented and it contacts the floor surface. The fear of doing is eliminated. Also, FIG.
When the instrument is pulled forward from the instrument holder as shown, the main tube bends while sliding in the suspension ring pulley, pulling the pulley against the biasing force of the spring, Since it moves following the instrument, drooping is always prevented. Further, when the pulled-out instrument is stored in the instrument holder, it can be stored easily because the main tube is always biased in the direction to be pulled rearward by the biasing force of the spring.

[0005]

Embodiments of the present invention will be described with reference to the drawings. 1 is a state view in which the main tube is pulled up rearward by the present device, FIG. 2 is an enlarged view of the main part structure of FIG. 1, FIG. 3 is a perspective view of the structure of FIG. 2, and FIG. 4 pulls out the instrument forward. FIG. 5 is a perspective view of a dental unit 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, 6 is a two-stage spiral spring device, 7 is a spiral spring, and 8 is a wire. , 8a is a wire roller,
Reference numeral 9 is a suspension ring type pulley, D is a table near the dental unit, F is a floor surface, A is a winding direction, and B is a drawing direction. An instrument holder 3 is mounted on the lower front surface of the table 4 near the table D of the dental unit, and an instrument for dental treatment in contact with the tip of the main tube 2 is mounted on the holder 3. 1 is inserted,
It can be placed. Further, the rear end of the main tube 2 is a tube joint 2 on the masked surface of the instrument table 4.
It is connected and fixed to a.

Behind the instrument table 4,
The plate-shaped mounting bracket 5 is provided so as to project,
A box-shaped spring case 6a that can be opened and closed is mounted on the rear end of the mounting bracket 5. In the spring case 6a,
A two-stage winding mainspring spring device 6 including a wire-combined spring roller 7a and a spring roller 7b, which winds the mainspring spring 7 in opposition, is installed.
It is biased to wind in the direction (FIG. 2). A roller bracket 6b is provided behind the body of the spring device 6 so as to project from the mounting bracket 5, and a wire roller 8a is rotatably and pivotally attached to the tip thereof.
Further, a winding roller for the wire 8 is integrally provided on the wire / spring roller 7a side by side with the winding roller for the mainspring 7, and one end of the steel wire 8 is wound. The wire 8 is suspended on a rear wire roller 8a and is pulled forward in the lower direction of the mounting bracket 5 via the roller 8a. At the other end of the wire 8, a large number of abacuses are provided. The suspension ring type pulley 9 formed by inserting the ball-shaped roller 9a (FIG. 6) into the round ring 9b is connected. 9c is a connecting tool. Therefore, the wire 8 is always driven by the mainspring 7,
The suspension ring pulley 9 is urged as if it is pulled up in the direction A. In addition, the suspension ring pulley 9 has an instrument 1
The main tube 2 is slidably inserted, and the pulley 9 is always pulled backward by the wire 8 and is stopped at a position where the biasing force of the wire 8 in the A direction and the weight of the main tube 2 are balanced. In order to make the main tube 2 slide easily, the suspension ring type pulley 9 is arranged as shown in FIG.
It is formed of (1) abacus bead roller 9a, or (2) wrapping roller 9b.

FIG. 1 shows a state in which the main tube 2 is pulled up rearward by the suspension ring type pulley 9 when the instrument 1 at the tip is placed on the instrument holder 3. However, compared to the conventional example (FIG. 7), it is hung sufficiently higher than the floor surface 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 was pulled out forward from the instrument holder 3 for treatment, it was pulled backward by the pulling force in the forward direction (B direction). Pulley 9 with main tube 2 pulled out forward and biased in direction A
Sliding friction occurs between the main tube 2 and the pulley 9
The wire 8 is pulled out forward along with the pulley 9 while sliding while curving inside. Since the wire 8 has an urging force in the A direction, the main tube 2 is always pulled backward and the main tube 2 hangs down and is pulled out forward without contacting the floor surface. Further, when it is desired to put the pulled-out instrument 1 back on the instrument holder 3 and place it on the instrument holder 3, the main tube 2 is pulled rearward by the pulley 9, so that the pulling force can be used to easily pull it back. , And can be 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, a spring case 6 mounted on a mounting bracket 5 behind the table 4 is mounted.
In a, five sets of two-stage spiral spring devices 6, a wire roller 8a, a mainspring 7 and a wire 8 are provided. Further, a suspension ring type pulley 9 is attached to the tip of each wire 8, and five tubes 2 are individually pulled up rearward to prevent any of the tubes 2 from hanging down.
It is easy to pull out from the holder 3 and pull in to the holder 3.

When the length of the main tube 2 is long, the mounting position of the spring case 6a can be lowered rearward by increasing the length of the mounting bracket 5, so that the main tube 2 can be easily prevented from hanging down. it can.

[0010]

Since this device has the above-mentioned structure, the main tube is always pulled backward and does not hang down and come into contact with the floor surface to be rubbed, which is extremely hygienic.
Further, the instrument can be pulled out and stored easily, the tube is not caught in the holder, and the treatment efficiency is improved. Further, since the suspension ring type pulley is formed of abacus bead rollers or wrapping rollers, the main tube slides smoothly and has little resistance.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which a main tube is pulled backward by the present apparatus.

FIG. 2 is an enlarged view of a main part configuration of FIG.

3 is a perspective view illustrating the structure of FIG. 2. 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 present device is interposed in a plurality of main tubes.

FIG. 6 is a cross-sectional view of two types of suspension ring pulleys.

FIG. 7 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 two-stage winding spring device 6a spring case 6b roller bracket 7 spring main spring 7a wire / spring roller 7b spring roller 8 wire 8a wire roller 9 Suspension wheel type pulley 9a Abacus bead roller 9b Round wheel 9c Connecting tool 9d Enveloping roller D Near table of dental unit F Floor surface A Rolling direction B Pulling direction

Claims (4)

[Claims] 1. A wire tensioned via a wire roller and a mainspring spring device biased as if to wind the wire are projected from the rear of the instrument table, and a suspension ring pulley is provided at the tip of the wire. To lock the main tube in a slidable manner and constantly urge the main tube to pull backward to prevent the main tube from sagging and place the pulled out instrument in the instrument holder. An energizing device for preventing the main tube of a dental unit from sagging and retracting, which can be easily stored. 2. A plurality of two-stage spiral spring devices protruding from the rear of the instrument table corresponding to a plurality of main tubes, and each main tube is always pulled rearward via a suspension ring pulley. The urging device for preventing the main tube of the dental unit from sagging and pulling in according to claim 1, wherein the device is urged so as to be pulled up. 3. A hanging unit for preventing and pulling down a main tube of a dental unit according to claim 1 or 2, wherein the suspension ring type pulley has a large number of abacus bead rollers inserted through a round ring. . 4. A suspension ring type pulley having a plurality of wrapping type rollers inserted through a round ring.
Energizing device for preventing sagging of the main tube of the described dental unit and for retracting.