JP2009291234A - Dental mixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental mixing apparatus for facilitating a work with a simple member configuration, where a content is prevented from leaking by push-out pressure from a part between a main body and a cylindrical body when pushing out the content sealed in the main body toward the cylindrical body. <P>SOLUTION: The dental mixing apparatus includes: the main body 110 with the content sealed therein; and the cylindrical body 130 freely rotatably attached to the main body. When the cylindrical body is rotated, the main body is shifted from a block state to a communication state, and then, the content is pushed out from the main body to the cylindrical body, so as to discharge the content from a discharge port arranged in the cylindrical body. In this case, through-holes for communication between the main body 110 and the cylindrical body 130, and rib grooves and rib in the circumferences of the respective through-holes are arranged, and the rib grooves and the ribs are kept in position, while linearly fitting each other. By the configuration, a fluid is prevented from leaking by the push-out pressure from a joint part between the main body 110 and the cylindrical body 130 when the content sealed in the main body 110 is pushed out toward the cylindrical body 130. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  According to the present invention, a cylindrical body is rotatably attached to a main body including a connecting portion with a cylindrical body and a storage container enclosing contents, and the cylindrical body is rotatably attached by a predetermined configuration of the connecting portion. When the relationship between the main body and the cylindrical body is switched from the sealed state to the communicating state by rotating the container, and the contents in the storage container are pushed out toward the cylindrical body, the mixing member provided in the cylindrical body With regard to a dental mixing device that is mixed by a (mixing element) and discharged from a discharge port, it is particularly simple while preventing leakage of the contents from the gap between the main body and the cylindrical body when not in use and when the contents are pushed out. The present invention relates to a dental mixing device that can be switched from a sealed state to a connected state by operation.

  For example, a dental filler for filling a tooth defect is used by mixing two or more types of reactive substances. Conventionally, such a dental filler has been mixed by hand (hand kneading) on a sheet, but in recent years, it has been automatically mixed by a syringe equipped with a mixing element for mixing. (See Patent Documents 1 to 5). This syringe is composed of a main body composed of a plurality of storage containers, a cap, a piston, and a mixing chip which is a separate body. The front end nozzle of the main body is covered with a cap, and the front end of the piston is inserted into the rear end of the storage container. Reactive substances are sealed in at least two storage containers, respectively. Further, a mixing chamber in which mixing elements having screw-like continuous wings are arranged is formed in the mixing chip.

  When using the syringe having such a configuration, first, the cap is removed from the front end nozzle of the main body, and the mixing tip is inserted into the front end nozzle and rotated, and the position is maintained. Next, the piston is pushed into the storage container at the same timing, and the mixing state is confirmed by testing, and then the discharge port at the tip of the mixing tip is positioned and injected into the tooth defect portion. By such a series of operations, the reactive substance in the storage container is filled in the tooth defect. However, with this type of syringe, the work of attaching the tip to the main body is complicated. In other words, if accurate alignment is not performed, the content leaks out or sufficient mixing is not performed, which makes it difficult to align the mixing chip with the main body.

  Moreover, the example of another form is comprised with the main body, the mixing chip | tip, and the dispenser. Reactive substances are sealed in the two storage containers provided in the main body. In addition, a mixing chamber is formed in the mixing tip as in the above-described syringe. In the case of using such a configuration, first, the tip of the storage container is opened (removed) to open, and the mixing tip is pushed in in a predetermined direction. The main body on which the mixing chip is mounted is mounted at a predetermined position of the dispenser. Thereafter, the piston provided in the dispenser is pushed into the storage container. After that, it goes through the same process as the above-mentioned syringe. However, the method using such a dispenser eliminates the difficulty of positioning the mixing chip, but has a drawback that a device called a dispenser is required. In addition, the process of attaching the mixing chip after opening the syringe is the same as in the above-described example, and has not yet been solved.

  Furthermore, the example of another form is comprised with the main body, the chip | tip with a cap, and a piston. A tip with a cap is previously attached to the front part of the main body, and a piston is inserted into the rear part of the main body (storage container). The remaining steps are the same as in the previous two examples. However, when using a syringe having such a configuration, first, the mixing tip with cap is rotated by 90 ° at the tip of the main body and pushed into the main body side to seal the main body and the mixing tip. It is necessary to cancel. In other words, the rubber plug that has sealed the inside and outside at the front of the main body (storage container) is pressed by the mixing chip and pushed into the storage container, thereby releasing the seal. However, this type of syringe has a disadvantage that the number of parts increases and the cost increases. In addition, since the rubber plug is easily deformed, there is a disadvantage that the sealing performance is inferior.

  For other similar applications, a capsule including a main body, a nozzle and a piston has been proposed (see Patent Document 6). A nozzle is attached to the tip of the main body so as to be rotatable about an axis orthogonal to the longitudinal axis of the main body, and a mixing element is unnecessary. When using a capsule having such a configuration, first, the piston is pushed into the main body to release the seal between the two types of reactive substances, and then kneaded and mixed with a mixer. Next, the tip nozzle of the main body is rotated by 90 ° and then mounted on the applier. As a result, the mixed reactive substance is discharged from the discharge port of the nozzle and filled in the tooth defect. Since such a capsule is assembled in advance and has a small and simple member structure, the working time is short and the cost can be kept low, but it is not suitable when a large amount of reactive substance is used. In addition, although detailed description is abbreviate | omitted, the container and thermos which are the containers provided with the same nozzle and accommodated the adhesive agent are also proposed (refer patent documents 7 and 8).

JP-A-8-276125 JP-A-9-187737 US Pat. No. 6,186,363 U.S. Pat. No. 4,767,026 U.S. Pat. No. 4,538,920 JP 60-253438 A Japanese Utility Model Publication No. 5-35702 Japanese National Patent Publication No. 9-508047

  Since the above-described capsule does not require a mixing element, it can be miniaturized, and the mixed reactive substance is directly extruded from the inside of the main body. However, a mixer which is an apparatus used for mixing two kinds of reactive substances in the main body is essential. However, mixing using this mixer naturally has quantitative limitations. In other words, it is advantageous in the case of a relatively small amount such as filling in a tooth defect site, but in the case where the shape of the oral ridge or tooth is obtained (impression acquisition), there are also two types. However, it cannot be used in the case of a large amount of use that is incomparable with the filling of the material that is used by mixing the reactive substances. In addition, since the above-described syringe type in which a plurality of types of reactive substances are mixed in the mixing chip has a high extrusion pressure, the reactive substance may leak from between the main body and the mixing chip. It should be noted that the adhesive container and the thermos are similar to the present invention, but are excluded from the subject of examination because there is almost no need to consider the sealing property between the main body and the nozzle because the purpose is different.

The first object of the present invention is to push a plurality of types of contents sealed in a storage container of a main body toward a cylindrical body that is a mixing chip, so that the contents are moved into the main body and the cylinder by an extrusion pressure applied. An object of the present invention is to provide a dental mixing apparatus that not only has a high degree of certainty of not leaking from a gap with a body, but also has a small number of member configurations and is easy to work.
Furthermore, the second object of the present invention is to provide a dental mixing device that can prevent the contents from leaking out and being deteriorated by touching the outside air before use.

  In order to achieve the above object, a dental mixing device according to the present invention includes a connecting portion connected to a cylindrical body and a storage container in which contents are enclosed. The cylindrical body has a predetermined configuration of the connecting portion. By rotating the cylindrical body, the relationship with the main body can be switched from a sealed state to a communicating state, and the contents are transferred from the storage container to the cylindrical body in the communicating state. A dental mixing device that discharges from a discharge port provided at a distal end of the cylindrical body by pushing out toward the cylindrical body, and each surface where the main body and the cylindrical body are in contact with each other At each position, at least two ribs and rib grooves are provided, and the ribs and rib grooves are formed in a configuration that maintains a communication state or a sealed state by line fitting. Toi .

  Furthermore, the dental mixing device according to the present invention has a through hole in which a rib groove is formed in the periphery of the main body to allow the contents to pass therethrough, and only a rest groove is formed in the same size as the through hole. The cylindrical body is provided with a through hole in which a rib is provided around the tubular body for receiving the extrusion of the contents, and only a rest rib having the same size as the through hole is provided. It is characterized in that a projecting sealing portion is provided. This makes it possible to ensure a sealing property that prevents the contents from leaking out during use, and uses no rest grooves and rest ribs that do not require much precision because there is no risk of leakage because no pressure is applied to the contents during storage. It is also possible to increase the cost at a low cost. Of course, because the rest groove is equivalent to the rib groove and the rest rib has the same accuracy as the rib, the seal performance is always maintained in the same way. It also has a function of maintaining the position until the installed cylindrical body is used. That is, since the cylindrical body is prepared in advance as a mixing tool and can be used at any time, there is no risk of loss or contamination of the mixing element, and the function as a storage container for the contents may be sufficient. .

  The through hole and the sealing portion provided in each of the main body and the cylindrical body are opposed to each other when the sealing portion is in a sealed state, and the respective sealing portions and the through holes are relative to each other when in a connected state. At this time, the rib and the rib groove are line-fitted in at least one place. As a result, it is possible to easily increase the number of types of contents while ensuring the sealing performance easily. This is because the ribs and rib grooves are relatively simple shapes, so that the processing is easy, and there is no need for other parts such as an O-ring, so there is no occurrence of mistakes such as forgetting to install these separate parts.

  At this time, the configuration of the connecting portion provided in the main body may be configured to allow the cylindrical body to rotate about an axis orthogonal to the direction in which the contents are pushed out. This makes it possible to instantly visually and tactilely confirm whether the dental mixing device is in a sealed state or in a usable communication state. In addition to this, it is preferable to use a structure including a member provided on each of the main body and the cylindrical body as a ratchet part for restricting the direction and angle of rotation of the cylindrical body as a connecting portion, because the usability is further improved. .

In addition, the configuration of the connecting portion provided in the main body may be a configuration for allowing the cylindrical body to rotate about an axis parallel to the extrusion direction of the contents. As a result, there is no bent portion even when the dental mixing apparatus is transported or stored, so that compact storage is possible.
As a configuration common to the two types described above, the main body includes at least two storage containers and each contains different contents, and when the contents are extruded into the cylindrical body at the same timing, the contents are It is configured to be mixed by a mixing member (mixing element) provided in the cylindrical body and discharged from the discharge port at the tip of the cylindrical body. As a result, the mixing member (mixing element) is not lost or searched for, and since it is reliably kneaded at a predetermined mixing ratio, anyone can obtain the physical properties that the manufacturer advocates.

  In the dental mixing device according to the present invention, a cylindrical body is rotatably attached to the main body in advance, and the main body can be reliably shifted from a sealed state to a previously assumed communication state only by the rotational movement of the cylindrical body. Can be made. While having such advantages, the manufacturer side can keep the cost low because of the simple member configuration, and the user (dentist, etc.) side can work reliably and easily, so the necessary work can be shortened. There is an advantage that you can do it in time (do not make the patient wait). And since the space between the through hole of the main body and the through hole of the cylindrical body is sealed by line fitting, when the content sealed in the main body is pushed out toward the cylindrical body, the extrusion pressure The fluid does not leak from the joint between the main body and the cylindrical body.

  Embodiments of the present invention will be described with reference to the drawings. The embodiments described below do not limit the invention according to the claims, and all the combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

  FIG. 1 is an explanatory perspective view showing a first embodiment of a dental mixing apparatus according to the present invention. FIG. 1A is an explanatory perspective view showing a state before use of the dental mixing apparatus, and FIG. ) Is a perspective explanatory view showing a state when the dental mixing apparatus is used. This dental mixing apparatus includes a main body 110 composed of two storage containers 111a and 111b each containing a reactive substance and a connecting part 120, and a mixing element for mixing the reactive substance therein (illustrated). And a cylindrical body 130 provided with (none). Thus, two types of reactive substances are pushed out from the storage containers 111a and 111b, mixed while passing through the cylindrical body 130, and discharged from the discharge port 130a located at the tip thereof. This is a mixing apparatus 100.

  More specifically, the cylindrical body 130 is attached with being tilted at a predetermined angle in advance with the direction in which the reactive substance is pushed out from the main body 110 as an axis. Further, the cylindrical body 130 is in a rotatable state by a connecting portion 120 described in detail later. Thus, by rotating (causing) the cylindrical body 130 from the state shown in FIG. 1A to the state shown in FIG. 1B, the relationship between the storage containers 111a and 111b and the cylindrical body 130 is changed from the sealed state to the communicating state. It is transferred to. At this time, it goes without saying that the axis of the reactive substance in the pushing direction coincides with the direction of the central axis of the tubular body 130. Details of the dental mixing apparatus 100 according to the present invention will be described with reference to the drawings.

2 is a perspective explanatory view showing a main part of the main body 110, FIG. 3 is a perspective explanatory view showing a main part of the cylindrical body 130, and FIG. 4 is a connection part 120 (the main body 110, the cylindrical body 130, and FIG.
As shown in FIG. 2, the main body 110 includes two hollow cylindrical storage containers 111a and 111b and a connection portion 112 integrally formed at the upper end of the storage containers 111a and 111b. Two kinds of reactive substances are sealed in the storage containers 111a and 111b, respectively. The connecting portion 112 includes a sliding portion 113 having a sliding surface 133a (see FIG. 3) at a lower end of a cylindrical body 130, which will be described later, and a sliding surface 113a that is in sliding contact with the rotating portion, and the cylindrical body 130. A pair of bearings 114a and 114b that are rotatably supported and two circular through holes 115a and 115b through which a reactive substance passes through the cylindrical body 130 are provided. The curvatures of the two sliding surfaces 113a and 133a are made to coincide with the locus of concentric circles sharing a virtual center (in the present invention, the axes of rotation shafts 134a and 134b described later correspond to this). Needless to say, it needs to be made.

  The bearings 114a and 114b are arranged so as to sandwich the illustrated upper ends of the storage containers 111a and 111b on both the left and right sides of the sliding surface 113a. The bearings 114a and 114b are opened upward in the drawing, and U-shaped grooves 114aa and 114bb whose upper sides are narrowed so as to match the diameters of the rotary shafts 134a and 134b are formed. As a result, when the rotary shafts 134a and 134b of the cylindrical body 130 are set, the rotational freedom is ensured while preventing them from falling off. The main body 110 in the vicinity of the bearings 114a and 114b has a reinforcing portion 110a (only the bearing 114a side is shown) in order to suppress deformation of the bearings 114a and 114b due to the force applied when the cylindrical body 130 is rotated and when the reactive substance is pushed out. May be provided. Also, the bearings 114a and 114b that open in the illustrated horizontal direction may be used, and in that case, it is possible to pay less attention to the aperture size of the U-shaped grooves 114aa and 114bb. That is, the risk that the rotating shafts 134a and 134b fall off from the bearings 114a and 114b, which increases in proportion to the pushing force pressure of the reactive substance, can be eliminated.

  On the sliding surface 113a, through holes 115a and 115b are opened as upper ends of holes connected to the insides of the storage containers 111a and 111b, respectively, as outlets on the main body side. Six circular rib grooves 116a, 116b, 117a, 117b, 118a, 118b (hereinafter referred to as first rib grooves 116a, 116b, second rib grooves 117a, 117b, and third ribs) that seal between the cylindrical body 130. Groove 118a, 118b) and six wedge-shaped ratchet portions 119a, 119b, 120a, 120b, 121a, 121b (hereinafter referred to as the first ratchet portion) shown in the enlarged view in FIG. 119a and 119b, second ratchet portions 120a and 120b, and third ratchet portions 121a and 121b). The ratchet portions 119a, 120a, and 121a are not shown in the shade of the bearing 114a, but are arranged under the same arrangement condition in the same direction with the ratchet portions 119b, 120b, and 121b and the through holes 115a and 115b interposed therebetween. Yes.

  The second rib grooves 117a and 117b are formed in concentric circles surrounding the through holes 115a and 115b, respectively. The first rib grooves 116a and 116b and the third rib grooves 118a and 118b are formed so as to sandwich the second rib grooves 117a and 117b with a predetermined distance from both sides. That is, the first rib groove 116a, the second rib groove 117a, and the third rib groove 118a are arranged in a direction orthogonal to the axis of the rotation shafts 134a and 134b. Further, it is natural that the arrangement of the ratchet portions 119a, 119b, 120a, 120b, 121a, 121b is positioned in consideration of the arrangement of the rib grooves 116a, 116b, 117a, 117b, 118a, 118b. . In other words, this is because the purpose of the ratchet portion is to assist in maintaining the position of each rib, which will be described later, in each corresponding rib groove.

  As shown in FIG. 3, the cylindrical body 130 includes a hollow cylindrical housing 131 and a joint cap 132 positioned at the lower end of the housing 131 in the figure. The housing 131 contains a mixing element for mixing a plurality of types of reactive substances, but this is not shown in the figure. The housing 131 is integrated at the upper portion of the joint cap 132 in the figure using means such as fitting, screwing, welding, and adhesion. As described above, the joint cap 132 has a sliding portion 133 that is in sliding contact with the sliding surface 113a (see FIG. 2) of the sliding portion 113, and a rotating shaft that is fitted into the bearings 114a and 114b (see FIG. 2), respectively. 134a and 134b are provided. The sliding portion 133 has two circular through holes 135a and 135b serving as entrances for introducing a reactive substance to a space (chamber) where the mixing element of the housing 131 is located, and around the through holes 135a and 135b. Two ribs 137a and 137b that are located and rise like a donut are provided, and as another element, a hole formed by only ribs 138a and 138b having the same size and shape as the aforementioned ribs 137a and 137b is provided. Two sealing portions 136a and 136b that are not drilled are provided under the same conditions as the connecting portion 112 described above.

  The sliding portion 133 will be further described. The shape of the sliding portion 133 is approximated to a shape obtained by cutting a cylindrical body at an angle of 90 ° in the axial direction, and the sliding surface 133a in the lower part of the figure is slid as described above. The moving portion 113 is in sliding contact with the sliding surface 113a. Since the rotating shafts 134a and 134b are provided on both sides of the sliding portion 133 so as to protrude in a direction orthogonal to the axial direction of the housing 131, in the state before use shown in FIG. Through-holes 115a and 115b (see FIG. 2) and the sealing portions 136a and 136b are opposed to each other, and the through-holes 135a and 135b on the cylindrical body 130 side are positioned so as to face the rib grooves 116a and 116b. Will do.

  In addition, on the sliding surface 133a, there are six wedge-shaped portions shown in the enlarged view in FIG. 3 at positions opposed to the sliding surface 113a of the main body 110 in order to restrict the rotation of the cylindrical body 130. Ratchet portions 139a, 139b, 140a, 140b, 141a, 141b (hereinafter referred to as first ratchet portions 139a, 139b, second ratchet portions 140a, 140b, and third ratchet portions 141a, 141b) are provided. The shapes of all these ratchet portions are made to coincide with the shapes of the portions where the protruding portions are recessed in the counterpart member, and are movable in only one predetermined direction.

  When the cylindrical body 130 is attached to the main body 110 having the above-described configuration, the sliding surface 133a of the cylindrical body 130 is opposed to the sliding surface 113a of the main body 110, and the bearing 114a of the main body 110 as shown in FIG. 114b are fitted into the rotating shafts 134a, 134b of the cylindrical body 130. Thereby, the cylindrical body 130 can be rotated from the state of FIG. 1A to the state of FIG. 1B with respect to the main body 110 around the rotation shafts 134a and 134b. At this time, the first rib grooves 116a and 116b, the second rib grooves 117a and 117b, the third rib grooves 118a and 118b, the first ribs 137a and 137b, the second ribs 138a and 138b, and the first ratchet portion 119a, 119b, second ratchet portions 120a, 120b, third ratchet portions 121a, 121b and first ratchet portions 139a, 139b, second ratchet portions 140a, 140b, third ratchet portions 141a, 141b are shown in FIG. A description will be given with reference to FIG.

  FIG. 5A is an explanatory plan view of the dental mixing apparatus 100 of this embodiment as viewed from above the cylindrical body 130, and FIG. 5B is the same view before use of the dental mixing apparatus 100. FIG. FIG. 4C is an explanatory diagram showing a cross section along line AA of FIG. 1A when the dental mixing apparatus 100 is used. In addition, the AA line cross section of the same figure (A) is sectional drawing in each center part of one through-hole 115a of the main body 110, and one through-hole 135a of the cylindrical body 130. FIG. The same applies to the other through-hole 115b and the other through-hole 135b, and therefore will be omitted in the following description.

  Next, before using the dental mixing apparatus 100, the cylindrical body 130 is inclined with respect to the dental mixing apparatus 100 as shown in FIG. That is, the central axis C2 of the through hole 135a is inclined with respect to the central axis C1 of the through hole 115a. At this time, the first rib 137a is fitted into the first rib groove 116a, and the second rib 138a is fitted into the second rib groove 117a. Details of this state will be described with reference to an enlarged view on the right side of FIG. The cross section of the second rib 138a is formed in a part of a circle having a radius rr indicated by a dotted line, and the cross section of the second rib groove 117a is formed in a part of a circle having a radius rg (<radius rr) indicated by a dotted line. Here, since the radius rr is larger than the radius rg, the circumferential portion of the second rib 138a comes into contact with the edge of the second rib groove 117a.

  The cross section of the first rib 137a is formed in a part of a circle having a radius rr shown by a dotted line, and the cross section of the first rib groove 116a is also formed in a part of a circle having a radius rr shown by a dotted line. For this reason, the substantially whole surface of the circumferential part of the first rib 137a comes into contact with the substantially whole surface of the circumferential part of the first rib groove 116a. Thereby, the position shift of the cylindrical body 130 with respect to the main body 110 can be prevented. Furthermore, by setting the radius of the first rib groove 116a to be equal to or larger than the radius of the first rib 137a, it is possible to prevent deformation of the ribs 137a and the like and lifting of the cylindrical body 130. It should be noted that the circumferential portion of the first rib groove 116a and the circumferential portion of the first rib 137a do not need to be in contact with each other substantially, and a portion of the first rib 137a is in contact with or separated from the first rib 137a within a range in which the first rib 137a is not deformed or lifted. May be.

  When the dental mixing apparatus 100 is used, the cylindrical body 130 is linear with respect to the dental mixing apparatus 100 as shown in FIG. That is, the central axis C1 of the through hole 115a and the central axis C2 of the through hole 135a are coaxial. At this time, the first rib 137a is fitted into the second rib groove 117a, and the second rib 138a is fitted into the third rib groove 118a. Details of this state will be described with reference to an enlarged view on the right side of FIG. The cross section of the first rib 137a is formed in a part of a circle having a radius rr indicated by a dotted line, and the cross section of the second rib groove 117a is formed in a part of a circle having a radius rg (<radius rr) indicated by a dotted line. Here, since the radius rr is larger than the radius rg, the circumferential portion of the first rib 137a comes into contact with the edge of the second rib groove 117a. That is, a line fit is made between the through hole 115a and the through hole 135a at two locations P3 and P4. Therefore, when the dental mixing apparatus 100 is used, the reactive substance moves from the main body 110 toward the cylindrical body 130 without using a seal member such as an O-ring, that is, the second rib groove 117a and the second rib 137a. Leakage of the reactive substance passing between them can be reliably prevented.

  The cross section of the second rib 138a is formed in a part of a circle having a radius rr indicated by a dotted line, and the cross section of the third rib groove 118a is also formed in a part of a circle having a radius rr indicated by a dotted line. For this reason, the substantially entire surface of the circumferential portion of the second rib 138a comes into contact with the substantially entire surface of the circumferential portion of the third rib groove 118a. Thereby, the position shift of the cylindrical body 130 with respect to the main body 110 can be prevented. Furthermore, by setting the radius of the third rib groove 118a to be equal to or larger than the radius of the second rib 138a, it is possible to prevent the deformation of the ribs 138a and the like and the lifting of the cylindrical body 130. It should be noted that the circumferential portion of the third rib groove 118a and the circumferential portion of the second rib 138a do not need to be in contact with each other, and a part of the circumferential portion of the third rib groove 118a is in contact with or separated from the second rib 138a without deformation or lifting. May be. In addition, although not shown, there is a configuration in which the rib grooves 118a and 118b are not necessary if the movement of the cylindrical body 130 is restricted by a combination of a rotation stopper and a ratchet.

  In the above embodiment, the cross-sectional shape of the rib groove or rib is formed so as to be a part of a circle having the radius rg <radius rr. You may form so that it may become a part of circle of radius rr. In this case, line fitting is performed at one place where the tip of the rib contacts the bottom surface of the rib groove. Further, the cross-sectional shape of the rib grooves and ribs is not limited to a part of a circle, and may be, for example, a triangular shape or an elliptical shape.

  FIG. 6A is an explanatory plan view of the dental mixing device 100 of the present embodiment as viewed from above the cylindrical body 130, and FIG. 6B is the same view before use of the dental mixing device 100. FIG. The explanatory view which shows the AA line cross section of FIG. 1, the same figure (C) is explanatory drawing which shows the AA line cross section of the same figure (A) in the middle of rotation of the cylindrical body 130, The same figure (D) is dental It is explanatory drawing which shows the AA line cross section of the same figure (A) at the time of use of the mixing apparatus 100 for operation. In addition, the AA line cross section of the same figure (A) is sectional drawing in each center part of one 1st ratchet part 119a etc. of the main body 110, and the 1st 1st ratchet part 139a of the cylindrical body 130. FIG. The same applies to the other first ratchet portion 119b and the other first ratchet portion 139b, and thus will be omitted in the following description.

  Prior to use of the dental mixing apparatus 100, the cylindrical body 130 is inclined with respect to the dental mixing apparatus 100 as shown in FIG. At this time, the first ratchet portion 119a meshes with the first ratchet portion 139a, the second ratchet portion 120a meshes with the second ratchet portion 140a, and the third ratchet portion 121a meshes with the third ratchet portion 141a. Since each ratchet portion 119a and the like is formed in a wedge shape, the cylindrical body 130 can rotate with a slight resistance in the direction of the arrow shown in the figure (direction in which it can be used), but cannot rotate in the reverse direction. It has become. Thereby, it can prevent that the cylindrical body 130 rotates carelessly and makes it usable.

  During the rotation of the cylindrical body 130, the cylindrical body 130 is in a state of floating with respect to the main body 110 as shown in FIG. At this time, the first ratchet portion 119a is disengaged from the first ratchet portion 139a and is positioned between the first ratchet portion 139a and the second ratchet portion 140a, and the second ratchet portion 120a is disengaged from the second ratchet portion 140a and the second ratchet portion 140a. The third ratchet portion 121a is located between the ratchet portion 141a and the third ratchet portion 141a, and is located between the third ratchet portion 141a and the edge of the sliding surface 133a. Accordingly, the first rib 137a is separated from the first rib groove 116a and the second rib 138a is separated from the second rib groove 117a, so that deformation and breakage of each rib 137a, the rib groove 116a, and the like can be prevented. it can.

  When the dental mixing apparatus 100 is used, the cylindrical body 130 is linear with respect to the main body 110 as shown in FIG. At this time, the first ratchet portion 119a meshes with the second ratchet portion 140a, the second ratchet portion 120a meshes with the third ratchet portion 141a, and the third ratchet portion 121a is disengaged from the edge of the sliding surface 133a. As described above, since each ratchet portion 119a and the like is formed in a wedge shape, the cylindrical body 130 is not rotatable in the direction of the arrow shown (the direction in which it cannot be used). Thereby, the usable state of the cylindrical body 130 can be maintained, and the displacement of the cylindrical body 130 with respect to the main body 110 can be prevented.

  FIG. 7 is a perspective explanatory view showing a second embodiment of the dental mixing apparatus of the present invention. FIG. 7A is a perspective explanatory view showing the entire configuration of the dental mixing apparatus, and FIG. It is perspective explanatory drawing which shows the state which decomposed | disassembled the principal part of the dental mixing apparatus. As shown in FIG. 1A, this dental mixing apparatus is composed of a main body 210 composed of two storage containers 211a and 211b each containing a reactive substance, and the reactive substance mixed therein. A cylindrical body 230 having a mixing element (not shown), and a joint ring 250 that rotatably couples the main body 210 and the cylindrical body 230. Therefore, a simple mixed dental type in which two types of reactive substances are pushed out from the storage containers 211a and 211b and mixed while passing through the cylindrical body 230 and discharged from the discharge port 230a located at the tip thereof. This is a mixing apparatus 200.

  More specifically, as shown in FIG. 5B, the upper surface of the main body 210 is aligned with the lower surface of the cylindrical body 230, and the joint ring 250 is fitted from the distal end side of the cylindrical body 230. The male screw 214 formed on the upper peripheral surface and the female screw 251 formed on the inner peripheral surface of the joint ring 250 are screwed together, and the cylindrical body 230 is sandwiched between the joint ring 250 and the main body 210. With this configuration, the cylindrical body 230 can be rotated about the axis in the direction indicated by the arrow while being in close contact with the main body 210 by being pressed against the main body 210 in the axial direction parallel to the extrusion direction of the reactive substance. become. Accordingly, the main body 210 is shifted from the sealed state to the communication state by rotating the cylindrical body 230 by 90 °, and thereafter, the two kinds of stored reactive substances are directed from the inside of the main body 210 toward the cylindrical body 230. By being pushed out, they are mixed in the cylindrical body 230 and discharged from the discharge port 230a provided at the tip of the cylindrical body 230. Details of the dental mixing apparatus 200 according to the present invention will be described with reference to the drawings.

8A is an explanatory plan view of the main body 210 as viewed from above, FIG. 8B is an explanatory plan view of the main body 210 as viewed from the side, and FIG. FIG. 10A is a plan explanatory view of the cylindrical body 230 viewed from the side, and FIG. 10B is a plan explanatory view of the cylindrical body 230 viewed from below. FIG. These are perspective explanatory views showing the main part of the cylindrical body 230.
As shown in FIGS. 8 and 9, the main body 210 is composed of two hollow cylindrical storage containers 211a and 211b, and a connection part 212 integrally formed at the upper end of the storage containers 211a and 211b. Yes. Two kinds of reactive substances are sealed in the storage containers 211a and 211b, respectively. The connecting portion 212 includes a sliding portion 213 having a sliding surface 233a (see FIGS. 10 and 11) at a lower end of a cylindrical body 230, which will be described later, and a sliding surface 213a that is in sliding contact with the rotating surface 213a. A male screw 214 that rotatably couples the body 230 and two circular through holes 215a and 215b that allow the reactive substance to pass through the cylindrical body 230 are provided. Needless to say, the two sliding surfaces 213a and 233a must be manufactured so that the curvatures of the two sliding surfaces 213a and 233a coincide with a sphere sharing a virtual center.

  An upper sliding surface 213a of the sliding portion 213 is formed in a concave shape obtained by cutting out a part of the spherical surface of the virtual sphere, and a convex sliding shape obtained by cutting out a part of the spherical surface of the cylindrical body 230. It faces the surface 233a (see FIGS. 10 and 11). The male screw 214 is formed on the peripheral surface 213b of the sliding portion 213, and is screwed with a female screw 251 (see FIG. 7) formed on the inner peripheral surface of the joint ring 250. The through holes 215a and 215b are connected to the inside of the storage containers 211a and 211b at the sliding portion 213, and are punctured so as to be point-symmetric with respect to the center of the sliding surface 213a, that is, arranged 180 ° apart. Yes. On the sliding surface 213a, four circular rib grooves 216a, 216b, 217a, 217b (hereinafter referred to as first rib grooves 216a, 216b, second rib grooves 217a, 217b) that seal between the cylindrical body 230 are provided. ) Is provided. The first rib grooves 216a and 216b are formed so as to surround the through holes 215a and 215b, respectively. Further, the second rib grooves 217a and 217b are formed between the first rib grooves 216a and 216b so as to be point-symmetric with respect to the center of the sliding surface 213a, that is, disposed at 180 °. That is, the first rib groove 216a, the second rib groove 217a, the first rib groove 216b, and the second rib groove 217b are arranged in this order at 90 ° intervals at a predetermined distance from the center of the sliding surface 213a.

  As shown in FIGS. 10 and 11, the cylindrical body 230 includes a hollow cylindrical housing 231 and a joint cap 232 positioned at the lower end of the housing 231 in the figure. The housing 231 contains a mixing element for mixing a plurality of types of reactive substances, but this is not shown in the drawing. The housing 231 is integrated at the upper portion of the joint cap 232 in the drawing using means such as fitting, screwing, welding, and adhesion. As described above, the joint cap 232 includes a sliding portion 233 that slides with the sliding portion 213, two circular through holes 235a and 235b that allow the reactive substance to pass through the housing 231, and two sealing portions 236a. , 236b. The sealing portions 236a and 236b are opposed to the through holes 215a and 215b (see FIGS. 8 and 9) before the dental mixing device 200 is used, and the through holes 235a and 235b are the dental mixing device. In the state at the time of use of 200, it arrange | positions so that it may oppose with the through-holes 215a and 215b.

  The sliding portion 233 will be further described. The shape of the sliding surface 233a is a convex shape obtained by cutting out a part of the virtual sphere as described above, and a concave shape obtained by cutting out a part of the same sphere. It comes into sliding contact with the formed sliding surface 213a (see FIGS. 8 and 9). The through holes 235a and 235b are perforated so as to be connected to the inside of the housing 231 at the sliding portion 233, respectively. The sliding surface 233a is provided with four circular ribs 237a, 237b, 238a, 238b (hereinafter referred to as first ribs 237a, 237b, second ribs 238a, 238b) that seal the space between the main body 210 and the sliding surface 233a. Yes. The first ribs 237a and 237b are formed so as to surround the through holes 235a and 235b, respectively. The second ribs 238a and 238b are formed so as to surround the sealing portions 236a and 236b, respectively. That is, the first rib 237a, the second rib 238a, the first rib 237b, and the second rib 238b are arranged in this order at 90 ° intervals at a predetermined distance from the center of the sliding surface 233a. Accordingly, the positional relationship and operational effects of the first rib grooves 216a and 216b, the second rib grooves 217a and 217b, and the first ribs 237a and 237b and the second ribs 238a and 238b are the same as those of the first embodiment. Although it is the same as that of the apparatus 100, it demonstrates briefly below.

First, the state before use of the dental mixing apparatus 200 will be described. The first rib 237a is fitted into the second rib groove 217a, and the second rib 238a is fitted into the first rib groove 216a. At this time, as described with reference to FIG. 5, line fitting is performed between the through hole 215 a and the sealing portion 236 a at two locations. Therefore, before using the dental mixing device 200, it is possible to reliably prevent leakage of reactive substances from the main body 210 between the first rib groove 216a and the second rib 238a without using a seal member such as an O-ring. Can do. Similarly, leakage of the reactive substance passing between the first rib groove 216b and the second rib 238b can be reliably prevented. In addition, since the extrusion pressure (pressure for discharge) is not applied to the reactive substance before use in some cases, the above-described configuration (configuration for ensuring sealing properties) can be eliminated.
Next, the state at the time of use of the dental mixing apparatus 100 is demonstrated. The first rib 237a is fitted into the first rib groove 216a, and the second rib 238a is fitted into the second rib groove 217b. At this time, the through-hole 215a and the through-hole 235a are line-fitted at two locations. Similarly, between the through hole 215b and the through hole 235b, line fitting is performed at two places. Therefore, when the dental mixing apparatus 200 is used, between the through holes 215a, 235a and 215b, 235b that are communicated from the main body 210 toward the cylindrical body 230 without using a seal member such as an O-ring. It is possible to reliably prevent leakage of the reactive substance through the.

  FIG. 12 is a perspective explanatory view showing the main part of the dental mixing apparatus 300 of the third embodiment. FIG. 12 (A) is a perspective explanatory view of the main body 310 and the cylindrical body 330 combined. B) is a perspective explanatory view in which a joint ring 350 that rotatably couples the main body 310 and the cylindrical body 330 is fitted, and FIG. 10C is a partial longitudinal section in which the joint ring 350 of FIG. The surface perspective explanatory drawing and the figure (D) are side explanatory views which looked at (C) from the side. As shown in FIG. 5A, the upper surface of the main body 310 is aligned with the lower surface of the cylindrical body 330, and as shown in FIG. 5B, the joint ring 350 is fitted from the tip of the cylindrical body 330. As shown in FIGS. 3C and 3D, the annular rib 351 formed on the inner peripheral surface of the joint ring 350 is fitted to the annular rib 311 formed on the upper peripheral surface of the main body 310 in the figure. Then, the tubular body 330 is sandwiched between the joint ring 350 and the main body 310.

That is, when the rib 351 of the joint ring 350 comes into contact with the rib 311 of the main body 310, the peripheral portion of the rib 351 is elastically deformed to increase the diameter, and is restored when the rib 351 gets over the rib 311. As a result, the cylindrical body 330 is attached to the main body 310 by the joint ring 350 in an axial direction parallel to the extrusion direction of the reactive substance and is attached so as to be rotatable about the axis while closely contacting. Since it depends on the elastic force of the ring 350, the degree of freedom of the rotation can be increased compared to the case where it depends on the screw fastening force of the joint ring 250 of the second embodiment.
In each of the above-described embodiments, the case where the present invention is applied to the dental mixing apparatus 100 that mixes two kinds of reactive substances has been described. However, the present invention also applies to a dental mixing apparatus that mixes three or more kinds of reactive substances. The same can be applied.

1 is a perspective explanatory view showing a first embodiment of a dental mixing apparatus of the present invention. FIG. 2 is a perspective explanatory view showing a main part of the main body of FIG. 1. It is a perspective explanatory view which shows the principal part of the cylindrical body of FIG. It is plane explanatory drawing which shows the attachment part of the main body and cylindrical body of FIG. 1A is an explanatory plan view of the dental mixing device of FIG. 1 as viewed from above the cylindrical body, and FIG. 1B is an AA view of the dental mixing device before use of the dental mixing device. Explanatory drawing which shows a line cross section, the figure (C) is explanatory drawing which shows the AA line cross section of the figure (A) at the time of use of the dental mixing apparatus. 1A is an explanatory plan view of the dental mixing device of FIG. 1 as viewed from above the cylindrical body, and FIG. 1B is an AA view of the dental mixing device before use of the dental mixing device. An explanatory view showing a cross section of the line, FIG. 10C is an explanatory view showing a cross section of the cylindrical body taken along the line AA in the middle of the rotation of the cylindrical body, and FIG. 10D is a use of a dental mixing apparatus. It is explanatory drawing which shows the AA line cross section of the figure (A) at the time. FIG. 4 is a perspective explanatory view showing a second embodiment of the dental mixing apparatus of the present invention, in which FIG. (A) is a perspective explanatory view showing the overall configuration of the dental mixing apparatus, and (B) is a dental mixing apparatus. It is perspective explanatory drawing which shows the state which decomposed | disassembled the principal part. 7A is an explanatory plan view of the main body of FIG. 7 as viewed from above, and FIG. 7B is an explanatory plan view of the main body of FIG. 7 as viewed from the side. FIG. 8 is a perspective explanatory view showing a main part of the main body of FIG. 7. 7A is an explanatory plan view of the cylindrical body of FIG. 7 viewed from the side, and FIG. 7B is an explanatory plan view of the cylindrical body of FIG. 7 viewed from below. FIG. 8 is a perspective explanatory view showing a main part of the cylindrical body of FIG. 7. It is perspective explanatory drawing which shows the principal part of the dental mixing apparatus of the 3rd Embodiment of this invention, The figure (A) is a perspective explanatory drawing which match | combined the main body and the cylindrical body, The figure (B) is the figure. The perspective explanatory drawing which fitted the joint ring which couple | bonds a main body and a cylindrical body rotatably, The figure (C) is the fragmentary longitudinal cross-section perspective explanatory drawing which cut the joint ring of (B) in the axial direction, (D) is side explanatory drawing which looked at (C) from the side.

Explanation of symbols

  100, 200, 300 Dental mixing device, 110, 210, 310 Main body, 111a, 111b, 211a, 211b Storage container, 112, 212 Connection portion, 113, 213 Sliding portion, 113a, 213a Sliding surface, 114a, 114b Bearing, 114aa, 114bb U-shaped groove, 115a, 115b, 215a, 215b Through hole, 116a, 116b, 216a, 216b First rib groove, 117a, 117b, 217a, 217b Second rib groove, 118a, 118b Third rib Groove, 119a, 119b first ratchet part, 120a, 120b second ratchet part, 121a, 121b third ratchet part, 120 connecting part, 130, 230, 330 cylindrical body, 130a, 230a discharge port, 131, 231 housing, 132,232 Joint cap, 133, 233 Sliding part, 133a, 233a Sliding surface, 134a, 134b Rotating shaft, 135a, 135b, 235a, 235b Through hole, 136a, 136b, 236a, 236b Sealing part, 137a, 137b, 237a, 237b 1st rib, 138a, 138b, 238a, 238b 2nd rib, 139a, 139b 1st ratchet part, 140a, 140b 2nd ratchet part, 141a, 141b 3rd ratchet part, 311, 351 rib

Claims (7)

The cylindrical body is rotatably attached to a main body including a connecting portion with the cylindrical body and a storage container in which contents are sealed, and rotates the cylindrical body. The relationship with the main body can be switched from the sealed state to the communication state by the above-mentioned, and the discharge is provided at the tip of the cylindrical body by pushing the contents from the storage container toward the cylindrical body in the communication state. A dental mixing device that discharges from an outlet,
On each surface where the main body and the cylindrical body are in contact, ribs and rib grooves each having at least two pairs are provided at opposite positions on the surfaces, and the ribs and rib grooves are line-fitted. A dental mixing device characterized by being configured to maintain a communication state or a sealed state by being combined. On the main body side, there are provided a through hole in which a rib groove is recessed around the contents and a sealing portion in which only the rest groove is recessed with the same size as the through hole. The cylindrical body has a through hole in which a rib is provided in the periphery for receiving the extrusion of the contents, and a sealing portion in which only the rib has the same size as the through hole. The dental mixing apparatus according to claim 1, wherein the dental mixing apparatus is provided. Each of the main body and the cylindrical body is provided with a pair of at least two through-holes and a sealing portion. When the sealed state and the through-hole are opposed to each other, 2. Each of the sealing portions and the through holes are opposed to each other, and at this time, the rib and the rib groove are line-fitted at least at one place. Or the dental mixing apparatus of 2. The configuration of the connecting portion provided in the main body is a configuration for allowing the cylindrical body to rotate about an axis orthogonal to the extrusion direction of the contents. The dental mixing apparatus as described in any one. The structure of the connection part arranged in the main body is a structure including members respectively provided in the main body and the cylindrical body as a ratchet part that regulates the rotation direction and angle of the cylindrical body. The dental mixing apparatus according to any one of claims 1 to 4, wherein the dental mixing apparatus is characterized in that: The structure of the connecting portion provided in the main body is a structure for allowing the cylindrical body to rotate about an axis parallel to the extrusion direction of the contents. The dental mixing apparatus as described in any one. The main body is provided with at least two storage containers and each contains different contents, and when the contents are pushed out into the cylindrical body at the same timing, the contents are mixed members (mixing members) arranged in the cylindrical body. The dental mixing device according to any one of claims 1 to 6, wherein the dental mixing device is mixed by an element) and discharged from a discharge port at a tip of the cylindrical body.

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