JPH07506019A - Suction tube connection device for dental aspirator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Suction tube connection device technical field for dental suction device The present invention is a suction tube connection device for a dental suction device, the suction tube an artificial tube that can be connected to an inlet tube, an outlet tube that can be connected to an aspirator, and an outlet tube that can be connected to an inlet tube and an outlet tube A removable strainer provided in a flow path. .

Background technology Such a device can be read, for example, from European Patent Publication Box 390951. I can do it. It includes a casing with a cylindrical internal space, and the periphery of the internal space. An inlet pipe pours into the surface, and an outlet pipe branches upwardly at the circumferential surface, offset by 90°. strike The laner can be removed or installed on the front side and has a flat surface between the inlet and outlet pipes. The strainer is located under the curved wall portion and the spout of the inlet pipe. It is connected through the cypress. A strainer is a material that is passed through a suction tube. It helps to hold down large solid particles. Inlet pipe can rotate within the casing The device includes a operably supported angle member to which a suction tube is connected.

A flow controller rotatably inserted into the outlet tube has two disks, the disks having a They are connected via a web extending over less than half the circumference. This connection The disadvantage of continuous devices is the small sieve surface, which is essentially perpendicular to the flow. are relatively easily displaced and require frequent draining and cleaning of the sieve surface.

Disclosure of invention Therefore, the problem of the present invention is to provide a suction tube connecting device of the type pointed out at the beginning. The objective is to essentially enlarge the surface to prevent blockage of the strainer as much as possible. Book According to the invention, the connecting device is arranged such that the inlet pipe and the outlet pipe are arranged with flow separation. a removable lower part connecting the inlet and outlet pipes at the point of flow; The above object is achieved by arranging the strainer at.

Therefore, since both the inlet and outlet pipes are on the same side of the connection, the strainer and The size, configuration and arrangement of the accommodating lower part shall essentially meet the requirements well. Can be done. For example, in a preferred embodiment requiring very little assembly space, The part has a connecting recess, and the lower part has a rigid plate that can be inserted into the recess and an elastic tongue that can be locked. A piece is provided. In a second embodiment, if sufficient space exists, the lower part can be arranged in a drawer-like manner so that it can be pulled out. To fix the bottom part, Preferably, a fastener fastening portion is provided. The tightening fittings are designed so that it swings at the bottom. When the upper holding plate is grasped from behind, the lower grip It can be used as a part. However, the fastening fittings are pivoted on the top ( You can also do it.

When the strainer is configured in the form of a cup, a very large sieve surface is created. child Thus, the strainer can be adapted, for example, to the lower part and taper conically downwards. I can do it. A side wall configured as a strainer extends between the inlet and the outlet. When the side wall is aligned with the outlet, i.e. an extension of the outlet pipe, A sieve surface is obtained. In a preferred embodiment, the strainer is or has rods extending from top to bottom with slots extending downward and outward between the rods. is provided. This causes these slots to become clogged with small solid particles. This is virtually impossible. This is because these solid parts have expanded grooves. This is because it is carried downward along the hole and can pass through it. Stre The container retains only the large portions, and these are preferably placed in a closed constructed bottom. get together.

As already mentioned, the size and lower part of the sieve surface can be selected according to various requirements. In another preferred embodiment, there is a tube in the upper part for connecting another suction tube. A second artificial tube is provided. This allows two suction tubes with different diameters. In workplaces that are conventionally equipped with pipes, only one connection device is required. Change In order to minimize the strain on each suction tube at the connection point, it is preferable to In this case, both inlet pipes are formed by oppositely arranged angle members and are common. It is arranged so as to be rotatable around the axis of the shaft. In this case, a particularly dense structure is achieved. will be accomplished. The at least one angle member preferably includes a blocking device, the device has, in particular, a diaphragm extending obliquely to the two tube parts of the angle member; Two tube sections pour into the suppression surface.

In another preferred embodiment, a flow controller is located within the elbow of the outlet tube.

Flow controllers can be configured in various ways, e.g. by adjusting screws, throttle valves, etc. be able to. In a preferred embodiment, the flow controller is adjustable within the branch of the elbow. It is formed by a stopper supported by the cap, the inner end surface of which is It is flush with the curved wall. As the stopper moves, the cross section of the elbow changes. This key The stopper is arranged so that it can rotate around an axis that extends parallel to the axis of the outlet pipe. In some cases, no additional space is required.

The following is a detailed description of the invention based on the figures of the accompanying drawings and without limitation thereto: do.

Brief description of the drawing FIG. 1 is an exploded side view of the connecting device according to the invention, FIG. 2 is a bottom view of the upper part, and FIG. 4 is a side view of the second embodiment, slightly modified. It is a diagram.

Preferred modes for carrying out the invention The connection device for two suction tubes in the dental workplace is a top that can be connected to a suction device. It has a section l in which two inlet pipes 2 and one outlet pipe 3 are combined. 2 The two inlet pipes 2 are provided coaxially and opposite each other, and are arranged downwardly through each one arcuate member 17. The inlet pipes are arranged side by side on the inclined seat surface 4 of the lower wall of the upper part. It has an inflow port 5 with a small diameter. The outlet pipe 3 has an elbow 26, which is also sloped. Starting from the outlet 6 provided in the seat surface 4, between the two circular arc members 17 of the inlet pipe 2 be. Therefore, the upper part is an extremely dense member. The end of the outlet pipe 3 can be of any design. It can be extended straight or bent upward or downward. Figure 1~ In the embodiment of FIG. 3, side walls 7 are provided on both sides of the inclined seat surface 4, which side walls are opposing support webs 9 for receiving the lower part 18 and outwardly projecting retaining claws 8; has. In order to fix the lower part 18 in the embodiment of FIG. A web 29 is provided at the edge. The web 29 also has an upper surface having an inclined seating surface 4. The lower wall of the section 29 is also provided with four sections, including a rigid plate 27 and a lower elastic plate. The locking tongue piece 28 is pushed in. A flow controller 2 is installed in the elbow 26 of the outlet pipe 3. 4 is provided. This consists of a cylindrical plug, which extends from the curved part of the elbow 26. Rotatably supported in a laterally opposite branch pipe, with an inner curved end face Form 25.

This curved end surface corresponds to the inner corner surface of the elbow 26 that is missing due to the branch pipe. , the plug is flush with the inner surface of the elbow in one position.

In each further position the plug projects into the elbow 26 and reduces its cross section. two An angle member fitted into the inlet pipe 2 is rotatable around a common axis IO . However, only one of them is shown in FIGS. 1 and 2 for reasons of space. Suction chi The tube is connected to an angle member so that it can swing about an axis 10. As a result, the suction tube exclusively handles the constant loads resulting from the movement of the tube better. can be absorbed into. In the standard position shown in Figure 1, the suction tube is connected. The tube section 31 shown extends downwardly. Figure 2 shows a 90° angle for ease of viewing. The rotated position is shown. Each angle member includes an isolation device 30, and the angle member Two tube sections 31 of the member pour into a compartment 33, within which a diaphragm 32 is arranged. Ru. In this way, the holes of the two tube sections 31 are located on the suppression surface of the diaphragm 32, which can be manipulated. The pressure ratio is changed on the opposite side of the diaphragm 32 in order to The diaphragm is removed by the negative pressure of the suction device. 32 is in the schematically illustrated closed position when a reference pressure prevails in the chamber 33. Shutoff device To open, negative pressure is applied to the chamber 33 and the septum 32 is lifted out of the hole in the tube section 31.

The lower part 18 of the connecting device is configured as a container and, as shown in FIGS. 1 and 2, It has two side webs 19 extending parallel to the side wall 7.

As shown in FIG. 1, the lower part 18 can be pulled out and pulled in like a drawer, and the side wall The web 19 is gripped and guided from below by the support web 9.

A side arm 22 of the fastening fitting is supported by two shaft pins 20 provided in the lower part 18. . This has a recess 23, and the side arm 22 grips the holding claw 8 from behind. Holding claw 8 Due to the difference between the curvature and the curvature of the boundary surface of the recess 23, a tensile force is generated in the approach direction, and the lower The inclined surface 21 at the upper edge of the section is pressed against the upper inclined seat surface 4 and sealed.

In the embodiment of FIG. 4, the elastic tongues 28 extend straight up and overhang the upper part 1 The recessed portion of the lower wall is removably grasped from behind.

The strainer 11 disposed in the lower part 18 is configured in the shape of a conical cup. . It has a side wall 13 which is provided with a screen by means of a downwardly extending bar 14 and a slot 16. Slot 16 is enlarged downwardly and outwardly to form a surface and prevent blockage.

In some cases, the rod 14 can also taper downwardly, as shown.

The three side walls 13 are flat and the fourth side wall is curved, and the curved side wall 13 surrounds the outlet pipe section 12, which section is flush with the outlet 6 of the inclined seat 4. The upper surface is suitably beveled, thereby connecting the outlet pipe 3 to the lower part 1. Extend to near the bottom of 8. Therefore, since the suction flow flows from top to bottom, the slot Fine particles that may be displaced are entrained downward until they pass through the slots. This is it The cup-shaped lower part is effectively emptied by suction and contains no water. this This is especially important when removing the lower part and removing the strainer. curved With the side walls 13, the strainer 11 obtains maximum capacity and maximum sieving surface. strainer The bottom 15 of 11 is configured to be closed.

Submission of translation of written amendment (Written amendment pursuant to the provisions of Article 184-8 of the Patent Law) September 30, 1994

Claims (16)

[Claims] 1. A suction tube connection device for a dental suction device, the device connecting to the suction tube. A possible inlet pipe (2), an outlet pipe (3) connectable to a suction device, an inlet pipe (2) and an outlet pipe A removable strainer (11) in the flow path between the mouth pipe (3) and the mouth pipe (3). In this case, the connecting device is arranged so that the inlet pipe (2) and the outlet pipe (3) are separated in flow. connecting the upper part (i) with the inlet pipe (2) and the outlet pipe (3) at the point of flow. It has a removable lower part (18), and a strainer (11) is arranged in the lower part. A suction tube connection device characterized by: 2. The upper part (1) has a connecting recess, and the lower part (18) has a rigid part that can be inserted into the recess. Claim 1, characterized in that an elastic tongue piece that can be locked with the plate is provided. Suction tube connection device as described. 3. The lower part (18) is arranged in a drawer-like manner so that it can be pulled out. , a suction tube connection device according to claim 1 or 2. 4. It is confirmed that a fastening metal fastening part is formed between the upper part (1) and the lower part (18). A suction tube connection device according to claim 2 or 3, characterized in that: 5. The fastening fitting is swingably supported at the lower part (18) and is supported by the upper part (1). Claim 4, characterized in that the holding claw (8) is oscillatingly entered behind the retaining claw (8). Suction tube connection device. 6. The strainer (11) is configured in a cup shape, and the side wall (13) has an inlet ( 5) and the outlet (6). The suction tube connection device according to any one of the items. 7. Claim characterized in that the strainer (11) tapers downwards. The suction tube connection device according to box 6. 8. Each side wall (13) of the strainer (11) has a shaft (14) extending from top to bottom. between the bars, an enlarged slot (16) is provided downwardly, preferably also outwardly. Suction tube connection according to claim 6 or 7, characterized in that the suction tube connection is Device. 9. Claim characterized in that the bottom (15) of the strainer (11) is closed. The suction tube connection device according to any one of boxes 6 to 8. 10. In the upper part (1) there is a second inlet tube (2) for connecting another suction tube. The suction according to any one of claims 1 to 9, characterized in that: Pull tube connection device. 11. Both inlet pipes (2) are formed by angular members arranged opposite each other. and arranged rotatably around a common axis (10) , the suction tube connection device according to claim 10. 12. characterized in that at least one angle member includes a blocking device (30); The suction tube connection device according to claim 11. 13. The isolation device (30) is located diagonally to the two pipe sections (31) of the angle member. It has a diaphragm (32) extending over the pressure surface of which the two pipe sections (31) pour. A suction tube connection device according to claim 12, characterized in that: 14. A flow controller (24) is located within the elbow (26) of the outlet pipe (3). The suction tube connector according to any one of claims 1 to 13, characterized in that: connection device. 15. A flow controller (24) is adjustably supported within the branch pipe of the elbow (26). The inner end surface (25) is bent in one position. The suction tube connection according to claim 14, characterized in that it is flush with the wall. connection device. 16. The stopper is arranged rotatably about an axis extending parallel to the axis of the outlet pipe (3). The suction tube connection device according to claim 15, characterized in that: