JP7420877B1 - Joint monitoring structure - Google Patents

Abstract

[Problem] To provide a structure in which one end surface of a columnar first member and one bottom surface of a dish-shaped second member having raised edges are joined with an adhesive. When manufacturing, the operator can visually check and monitor the state of application of the adhesive between one end surface of the first member and one surface of the bottom of the second member. do. [Solution] A joint monitoring structure in which one end surface of a column-shaped first member and one bottom surface of a dish-shaped second member formed with an upright edge are joined with an adhesive. A through hole was formed near the bottom of the edge of the second member, extending from the outer peripheral surface of the edge of the second member to the bottom. [Selection diagram] Figure 6

Description

The present invention relates to a joint monitoring structure. More specifically, the present invention provides a method for bonding a solid or hollow column-shaped first member and a solid or hollow dish-shaped second member with raised edges using an adhesive. The present invention relates to a joint monitoring structure suitable for use in monitoring the joint state of a joint between a first member and a second member.

Generally, one end surface of a solid or hollow column-shaped first member and one bottom surface of a solid or hollow dish-shaped second member with raised edges are bonded together using an adhesive. The fabrication of an integrated structure by joining is being carried out.

As such a structure, for example, a structure formed by joining a magnet and a yoke used to stabilize a magnetic circuit in a circulator, an isolator, etc. is known.

Here, FIGS. 1A and 1B are perspective structural explanatory diagrams showing a magnet and a yoke used when forming a structure that stabilizes a magnetic circuit in a circulator, an isolator, or the like. Note that FIG. 1(a) shows a perspective configuration explanatory diagram showing a magnet. Further, FIG. 1(b) shows a perspective configuration explanatory diagram showing the yoke.

Moreover, FIG. 2 is a perspective structural explanatory diagram showing a structure for stabilizing the magnetic circuit formed by joining the magnet and yoke shown in FIGS. 1(a) and 1(b).

To explain specifically with reference to FIGS. 1(a), (b) and 2, in a circulator, an isolator, etc., a cylindrical magnet 100 as a solid columnar first member and an edge portion An edge 200a serving as a solid dish-shaped second member formed in an upright manner is joined to a dish-shaped yoke 200 having a disc-shaped bottom part 200b formed in an upright manner (FIG. 1(a)). (See FIG. 2).

For convenience of explanation, in FIGS. 1A and 2B and in each of the figures described below, the upper side of the page will be referred to as the "upper side" and the lower side of the page will be referred to as the "lower side."

More specifically, in order to produce the structure 300, a circular lower bottom surface 100a is located on the lower side, which is one end surface of the magnet 100, and a circular lower bottom surface 100a is located on the upper side, which is one surface of the bottom 200b of the yoke 200. By adhering and fixing the inner bottom surface 200bb with an adhesive (not shown) (see FIGS. 1(a) and 1(b)), the structure 300 is formed (see FIG. 2). ).

As described above, the structure 300 that stabilizes the magnetic circuit is formed by bonding the magnet 100 and the yoke 200 with adhesive, and the structure 300 is used in a circulator, an isolator, or the like.

By the way, in the conventional technology, the structure 300 is formed by bonding the magnet 100 and the yoke 200 with an adhesive using the method described above. 100a and the inner bottom surface 200bb of the yoke 200, a means for an operator to visually check and monitor whether or not a necessary and sufficient amount of adhesive, that is, an appropriate amount of adhesive is applied. The problem was that there was no.

In addition, in the conventional technology, if there is an omission or omission in applying the adhesive between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 200bb of the yoke 200, it is difficult to detect it during an inter-process inspection. The problem was that it was not possible.

Here, FIG. 3 is an explanatory longitudinal cross-sectional view taken along line AA in FIG. 2, and shows a necessary and sufficient amount of adhesive between the lower bottom surface of the magnet and the inner bottom surface of the yoke. A vertical cross-sectional explanatory view showing a structure with adhesive applied thereto is shown.

In addition, FIG. 4 is an explanatory longitudinal cross-sectional view taken along the line AA in FIG. A vertical cross-sectional explanatory view showing the structure without the agent applied thereto is shown.

To explain specifically with reference to FIGS. 3 and 4, as shown in FIG. In a structure 300 coated with an appropriate amount of adhesive 400, even when the structure 300 is subjected to impact or vibration, it is possible to prevent the occurrence of misalignment of the bonding position between the magnet 100 and the yoke 200. It was possible to perform the function of stabilizing the magnetic circuit.

On the other hand, as shown in FIG. 4, there is a structure in which a necessary and sufficient amount of adhesive 400, that is, an appropriate amount of adhesive 400, is not applied between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 200bb of the yoke 200. 300, when the structure 300 is subjected to impact or vibration, the adhesion position between the magnet 100 and the yoke 200 becomes misaligned, and the function of stabilizing the magnetic circuit cannot be fully demonstrated. There was fear.

Therefore, when bonding the lower bottom surface 100a of the magnet 100 and the inner bottom surface 200bb of the yoke 200 with the adhesive 400, the application state of the adhesive 400 between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 200bb of the yoke 200 is There was a strong demand for a method that would allow workers (for example, interprocess inspectors or other third parties) to visually check and monitor the process.

It should be noted that the prior art known to the applicant at the time of filing the patent application is not an invention related to an invention known in the literature, so there is no prior art document information to be described in the specification of the present application.

The present invention has been made in view of the various problems and demands in the conventional technology as described above, and its purpose is to provide a structure in which one end surface of a columnar first member and an edge thereof are raised. When bonding one side of the bottom of the formed dish-shaped second member with an adhesive to create an integrated structure, one end face of the first member and one side of the bottom of the second member are bonded together with an adhesive. It is an object of the present invention to provide a joint monitoring structure that allows an operator to visually check and monitor the state of the adhesive applied to one surface of the bottom.

In order to achieve the above object, a joint monitoring structure according to the present invention is provided with one end surface of a columnar first member and one surface of the bottom of a dish-shaped second member whose edge is formed to rise. When joining the two members with adhesive, a through hole is formed near the bottom of the edge of the second member, extending from the outer circumferential surface of the edge of the second member to the bottom.

Therefore, according to the joint monitoring structure of the present invention, when one end surface of the first member and one surface of the bottom of the second member are joined with adhesive, the operator visually inspects the through hole. By visually checking this, the operator can visually check and monitor the state of application of the adhesive between one end surface of the first member and one surface of the bottom of the second member. It becomes like this.

That is, in the joint monitoring structure according to the present invention, one end surface of a columnar first member and one surface of the bottom of a dish-shaped second member having raised edges are bonded using an adhesive. A joint monitoring structure, wherein a through hole is formed near the bottom of the edge of the second member, extending from the outer peripheral surface of the edge of the second member to the bottom. It is.

Further, in the joint monitoring structure according to the present invention, in the joint monitoring structure according to the present invention described above, the through hole penetrates the outer circumferential surface and the inner circumferential surface of the edge, and a part of the bottom. It is formed by cutting out the area.

Further, in the joint monitoring structure according to the present invention, in the above-described joint monitoring structure according to the present invention, the part of the region is a region adjacent to the inner circumferential surface of the bottom, and The area is located below the inner bottom surface.

Further, in the joint monitoring structure according to the present invention, in the joint monitoring structure according to the present invention described above, a plurality of the through holes are arranged at equal intervals along the circumferential surface of the edge. It is something.

Further, in the joint monitoring structure according to the present invention, in the joint monitoring structure according to the present invention described above, the through hole has an elongated hole shape extending in a direction parallel to the inner bottom surface. .

Further, in the joint monitoring structure according to the present invention, in the joint monitoring structure according to the present invention described above, the first member is a magnet and the second member is a yoke. be.

Further, the joint monitoring structure according to the present invention is the above-described joint monitoring structure according to the present invention, in which four through holes are formed at equal intervals.

Since the present invention is configured as described above, one end surface of the columnar first member and one surface of the bottom of the dish-shaped second member with raised edges are connected to each other. When creating an integrated structure by bonding with adhesive, the operator should check the state of the adhesive applied between one end surface of the first member and one surface of the bottom of the second member. This has the excellent effect of enabling visual confirmation and monitoring.

FIGS. 1A and 1B are perspective structural explanatory views showing a magnet and a yoke used when forming a structure that stabilizes a magnetic circuit in a circulator, an isolator, or the like. Note that FIG. 1(a) is a perspective configuration explanatory diagram showing a magnet. Moreover, FIG. 1(b) is a perspective structural explanatory diagram showing the yoke. FIG. 2 is a perspective structural explanatory diagram showing a structure for stabilizing the magnetic circuit formed by joining the magnet and yoke shown in FIGS. 1(a) and 1(b). FIG. 3 is an explanatory longitudinal cross-sectional view taken along the line AA in FIG. FIG. FIG. 4 is an explanatory longitudinal cross-sectional view taken along the line AA in FIG. It is a vertical cross-sectional explanatory view showing a structure in a state where it is not. FIGS. 5(a) and 5(b) show a joint monitoring structure according to an example of an embodiment of the present invention, in which a magnet and a yoke are used to form a structure that stabilizes a magnetic circuit in a circulator, an isolator, etc. FIG. Note that FIG. 5(a) is an explanatory perspective view of the magnet. Moreover, FIG. 5(b) is a perspective configuration explanatory diagram showing the yoke. FIGS. 6(a), 6(b), and 6(c) are explanatory diagrams showing a yoke used in the joint portion monitoring structure according to an example of the embodiment of the present invention shown in FIG. 5(b). Note that FIG. 6(a) is an explanatory front view when the arrow B in FIG. 5(b) is viewed from the front. Further, FIG. 6(b) is an explanatory plan view when the arrow B in FIG. 5 is viewed from the front. Further, FIG. 6(c) is an explanatory cross-sectional view taken along line CC in FIG. 6(a). FIGS. 7(a), (b), and (c) are diagrams showing dimensions of magnets and yokes used by the applicant in experiments related to the present invention, and examples of combinations when joining them to form a structure. It is. In addition, FIG. 7(a) is a chart showing the dimensions of the magnets used by the applicant in experiments related to the present invention, and shows 10 examples A to J for diameter L3 and height L4. This is a diagram. Further, FIG. 7(b) is a chart showing the dimensions of the yoke used by the present applicant in experiments related to the present invention, and the outer diameter L5, inner diameter L6, depth L7, and thickness L8 are respectively 5. This is a chart showing examples. Further, FIG. 7(c) shows the combination of the magnet shown in FIG. 7(a) and the yoke shown in FIG. 7(b) when the applicant formed a structure used in experiments related to the present invention. This is a chart showing. FIG. 8 is a conceptual diagram illustrating an example of an operation of applying an adhesive to the inner bottom surface of the bottom of a yoke used in a joint monitoring structure according to an embodiment of the present invention. FIG. 9 is an explanatory plan view showing a state in which an adhesive is applied to the inner bottom surface of a yoke used in a joint monitoring structure according to an embodiment of the present invention. FIGS. 10(a) and 10(b) show that, regarding the experimental results by the applicant of the present invention, adhesive is bonded over almost the entire interface between the lower bottom surface of the magnet and the inner bottom surface of the yoke for a joint monitoring structure according to an embodiment of the present invention. It is an explanatory view showing a structure in a state where an agent is applied. Note that FIG. 10(a) is an explanatory longitudinal cross-sectional view corresponding to FIGS. 3 and 4. Further, FIG. 10(b) is an explanatory diagram showing the structure shown in FIG. 10(a) when the adhesive is visually recognized from the through hole. FIGS. 11(a) and 11(b) show a part of the interface between the lower bottom surface of the magnet and the inner bottom surface of the yoke regarding the joint monitoring structure according to an embodiment of the present invention, regarding the experimental results by the applicant. It is an explanatory view showing a structure in a state where adhesive is applied only to a small area. Note that FIG. 11(a) is an explanatory longitudinal cross-sectional view corresponding to FIGS. 3 and 4. Moreover, FIG.11(b) is explanatory drawing which shows the state where the adhesive was visually recognized from the through-hole about the structure shown in FIG.11(a). FIGS. 12(a) and 12(b) show experimental results by the applicant of the present invention in which adhesive is applied to the through hole formed in the yoke for a joint monitoring structure according to an example of the embodiment of the present invention. It is an explanatory view showing a structure in a state. Note that FIG. 12(a) is an explanatory longitudinal cross-sectional view corresponding to FIGS. 3 and 4. Further, FIG. 12(b) is an explanatory diagram showing the structure shown in FIG. 12(a) when the adhesive is visually recognized from the through hole.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of a joint monitoring structure according to the present invention will be described in detail below with reference to the accompanying drawings.

In addition, in the description of the following "Details of Carrying Out the Invention" section, the structures and operations that are the same or equivalent to those described with reference to each of FIGS. 1 to 4 will be referred to in FIG. 1. By assigning the same reference numerals as those used in each of the figures in FIGS. 4 to 4, a detailed explanation of the structure and operation thereof will be omitted as appropriate.

(I) Description of the configuration of the joint monitoring structure according to an example of the embodiment of the present invention

FIGS. 5(a) and 5(b) show a joint monitoring structure according to an embodiment of the present invention, in which a magnet and a yoke are used to form a structure that stabilizes a magnetic circuit in a circulator, an isolator, etc. A perspective configuration explanatory diagram showing the following is shown. Note that FIG. 5(a) shows a perspective configuration explanatory diagram showing the magnet. Further, FIG. 5(b) shows a perspective configuration explanatory diagram showing the yoke.

Further, FIGS. 6(a), 6(b), and 6(c) are explanatory diagrams showing a yoke used in the joint monitoring structure according to an example of the embodiment of the present invention shown in FIG. 5(b). Note that FIG. 6(a) shows a front explanatory view when the arrow B in FIG. 5(b) is viewed from the front. Further, FIG. 6(b) shows a plan view when viewed from the front in the direction of arrow B in FIG. Further, FIG. 6(c) shows an explanatory cross-sectional view taken along line CC in FIG. 6(a).

These will be explained with reference to FIGS. 5(a), 6(b), and 6(a), (b), and (c). A comparison will be made between the joint monitoring structure according to an embodiment of the present invention and the conventional technology. Then, the configuration of the yoke, which is a dish-shaped second member with raised edges, is different.

That is, unlike the yoke 200 in the conventional technology, the yoke 10 as the second member in the joint monitoring structure according to the embodiment of the present invention has an edge formed rising from the disk-shaped bottom 14. Four through holes 20 having the same dimensions and the same shape are bored in the circumferential surface of the pipe 12 .

Here, the yoke 10 has a solid dish-like shape including a disk-shaped bottom 14 with an edge 12 raised up.

The four through holes 20 formed in the circumferential surface of the edge 12 are arranged at equal intervals along the circumferential surface of the edge 12.

Each of the four through holes 20 is formed near the bottom 14 of the edge 12 of the yoke 10 so as to extend from the outer peripheral surface 12a of the edge 12 of the yoke 10 to the bottom 14 of the yoke 10.

More specifically, each of the four through holes 20 penetrates the outer circumferential surface 12a and the inner circumferential surface 12b of the edge portion 12, and is a cutout portion formed by cutting out a part of the bottom portion 14. 16.

Here, the cutout portion 16, which is a region obtained by cutting out a part of the bottom portion 14, is a region of the bottom portion 14 adjacent to the inner circumferential surface 12b of the edge portion 12, and extends downward from the inner bottom surface 14aa of the bottom portion 14. This is an area that has been set up in such a way that it can be dug down.

In other words, the through hole 20 penetrates the outer circumferential surface 12a and the inner circumferential surface 12b of the edge 12, and the notch 16 formed by cutting out a part of the bottom 14, that is, the bottom 14. The inner bottom surface is formed by forming a notch 16, which is a region adjacent to the inner circumferential surface 12b of the edge 12 at It is perforated to extend in a direction parallel to 14a.

In the present embodiment, each of the four through holes 20 has a short axis L1 extending in the vertical direction, that is, a direction perpendicular to the extension direction of the inner bottom surface 14a, and a long axis L2 extending at right angles to the short axis L1. It is formed in an elongated hole shape extending in the direction parallel to the inner bottom surface 14a.

In this way, by forming the through hole 20 into an elongated hole shape extending in a direction parallel to the inner bottom surface 14a, compared to the case where the through hole 20 is a circular opening, the front explanatory view shown in FIG. 6(a) When the operator looks into the through hole 20 from the outer circumferential surface 12a side toward the inner circumferential surface 12b side and visually recognizes the inner bottom surface 14a, the opening area is smaller than that of the circular one, so that it is different from the circular one. It becomes possible to visually recognize the same area.

For this reason, rather than making the through hole 20 a circular opening, it is better to make the through hole 20 an elongated opening extending in a direction parallel to the inner bottom surface 14a, so that the cutting area when drilling the edge 12 is better. Since it is possible to make it smaller, the strength of the edge 12 can be further ensured.

Further, as described above, in the through hole 20, since the notch 16 is formed in the bottom 14 of the yoke 10, the operator can open the through hole 20 from the outer circumferential surface 12a side to the inner circumferential surface 12b side. When looking into the inner bottom surface 14a, the position of the inner bottom surface 14a can be seen more clearly.

Here, FIGS. 7(a), (b), and (c) show the dimensions of the magnet and yoke used by the applicant in experiments related to the present invention, as well as the combination when joining them to form a structure. An illustrative diagram is presented.

That is, FIG. 7(a) shows a diagram showing the dimensions of the magnets used by the applicant in the experiments related to the present invention, and there are 10 magnets A to J for diameter L3 and height L4. A chart is shown showing an example.

Further, FIG. 7(b) shows a diagram showing the dimensions of the yoke used by the applicant in experiments related to the present invention, and the outer diameter L5, inner diameter L6, depth L7, and thickness L8 are each a A diagram showing five examples of ~e is shown.

Furthermore, FIG. 7(c) shows a combination of the magnet shown in FIG. 7(a) and the yoke shown in FIG. 7(b) when the applicant formed a structure used in experiments related to the present invention. A diagram showing this is shown.

In the structures formed by the examples shown in FIGS. 7(a), 7(b), and 7(c) (see FIGS. 10(a), 10(a), and 12(a)), the through holes 2 For example, the dimensions of L1 and L2 may be approximately 0.5 mm and 1.00 mm, respectively.

(II) Description of manufacturing method and monitoring method of joint monitoring structure according to an example of embodiment of the present invention

In the above configuration, in an experiment conducted by the present applicant, when producing a structure (see FIG. 10(a), FIG. 11(a), and FIG. 12(a)) using the combination shown in FIG. 7(c), First, as shown in FIG. 8, a worker grasps a handy type electric dispenser 600 for applying adhesive with fingers 500, and operates the electric dispenser 600 to apply adhesive to the yoke 10. Adhesive 400 is applied on the inner bottom surface 14a of the bottom part 14 (see FIG. 9).

Thereafter, the operator performs a work of bonding and fixing the lower bottom surface 100a of the magnet 100 and the inner bottom surface 14a of the yoke 10 via the adhesive 400.

As a result, a structure 30 similar to that shown in FIG. 2 is formed by the magnet 100 and the yoke 10.

Here, "a" (see FIG. 7(b)) as the yoke 10 is shown in FIGS. In addition, a structure 30 is used in which the magnet 100 is a combination of "A (see FIG. 7(a))" (see FIG. 7(c)), and the dimensions of the through hole 20 are The experimental results are shown when "L1 = 0.5 mm" and "L2 = 1.00 mm".

FIGS. 10(a) and 10(b) show approximately the interface between the lower bottom surface of the magnet and the inner bottom surface of the yoke regarding the joint monitoring structure according to an embodiment of the present invention, regarding the experimental results by the applicant. An explanatory diagram showing a structure with adhesive applied throughout is shown. Note that FIG. 10(a) shows a longitudinal cross-sectional explanatory view corresponding to FIGS. 3 and 4. Further, FIG. 10(b) is an explanatory diagram showing the structure shown in FIG. 10(a) when the adhesive is visually recognized from the through hole.

Further, FIGS. 11(a) and 11(b) show the interface between the lower bottom surface of the magnet and the inner bottom surface of the yoke regarding the joint monitoring structure according to an embodiment of the present invention, regarding the experimental results by the applicant. An explanatory diagram showing a structure in which adhesive is applied only to some small areas is shown. Note that FIG. 11(a) shows a longitudinal cross-sectional explanatory view corresponding to FIGS. 3 and 4. Further, FIG. 11(b) is an explanatory diagram showing the structure shown in FIG. 11(a), with the adhesive being visually observed through the through hole.

Further, FIGS. 12(a) and 12(b) show that the adhesive is applied to the through hole formed in the yoke regarding the joint monitoring structure according to an example of the embodiment of the present invention, regarding the experimental results by the applicant of the present invention. An explanatory diagram showing the structure in the state shown in FIG. Note that FIG. 12(a) shows a longitudinal cross-sectional explanatory view corresponding to FIGS. 3 and 4. Further, FIG. 12(b) is an explanatory diagram showing the structure shown in FIG. 12(a) when the adhesive is visually observed through the through hole.

First, as shown in FIG. 10(a), a case will be described in which the adhesive 400 is applied almost over the entire interface between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 14a of the yoke 10.

In this case, as shown in FIG. 10(b), when the operator visually checks the inside of the yoke 10 from each of the four through holes 20, the magnet 100 The state in which the lower bottom surface 100a of the yoke 10 and the inner bottom surface 14a of the yoke 10 were bonded together with the adhesive 400 could be visually observed and monitored.

Next, as shown in FIG. 11A, a case where the adhesive 400 is applied only to a small area of the interface between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 14a of the yoke 10 will be described. explain.

In this case, as shown in FIG. 11(b), when the operator visually checks the inside of the yoke 10 from each of the four through holes 20, the magnet 100 It was possible to visually observe and monitor the state in which the lower bottom surface 100a of the yoke 10 and the inner bottom surface 14a of the yoke 10 were not bonded with the adhesive 400.

Furthermore, as shown in FIG. 12(a), when bonding the lower bottom surface 100a of the magnet 100 and the inner bottom surface 14a of the yoke 10 with the adhesive 400, the yoke 10 may be inserted into any of the through holes 20 formed in the yoke 10. A case where the adhesive 400 overflows will be explained.

In this case, as shown in FIG. 12(b), when the operator visually checks the inside of the yoke 10 from each of the four through holes 20, at least one of the through holes 20 It was possible to visually confirm and monitor the state in which the adhesive 400 had overflowed into the inside of the container 20.

According to the experimental results of the applicant, "a" (see FIG. 7(b)) was used as the yoke 10, and "A" (see FIG. 7(a)) was used as the magnet 100. ” (see FIG. 7(c)), or when the dimensions of the through hole 20 are other than “L1 = 0.5 mm” and “L2 = 1.00 mm”. In this case, the experimental results were similar to those shown in FIGS. 10(a)(b), 11(a)(b), and 12(a)(b), so the yoke 10 and the magnet Explanation of experimental results regarding other combinations of 100 and other dimensions of through hole 20 will be omitted.

Here, for example, as an indicator at the time of inspection, ``When the four through holes 20 are visually recognized, if the state shown in FIG. 10(b) can be visually recognized in two or more through holes 20, If the appearance inspection standard is set in advance, such as "The amount of adhesive 400 is a necessary and sufficient amount, that is, the amount of adhesive 400 is an appropriate amount, the inspection will be passed." The person will be able to easily determine whether the test has passed or failed.

(III) Effects of joint monitoring structure according to an example of embodiment of the present invention

Therefore, according to the joint monitoring structure according to the embodiment of the present invention, the lower bottom surface 100a, which is one end surface of the magnet 100, which is the first member, and the bottom surface 14, which is one end surface of the magnet 100, which is the second member, When bonding the flat inner bottom surface 14a with the adhesive 400, the operator can visually check the through hole 20 to determine whether the bonding at the interface between the lower bottom surface 100a of the magnet 100 and the inner bottom surface 14a of the yoke 10 is The application state of the agent 400 can now be visually checked and monitored.

(IV) Regarding other embodiments

Note that the embodiments described above are merely examples, and the present invention can be implemented in various other forms. That is, the present invention is not limited to the embodiments described above, and various omissions, substitutions, changes, etc. can be made as appropriate without departing from the gist of the present invention.

For example, the above embodiment may be modified as described in (IV-1) to (IV-8) below.

(IV-1) In the embodiment described above, a case has been described in which the magnet 100 is used as the first member and the yoke 10 is used as the second member. Of course, it is not limited to this. That is, the magnet 100 and the yoke 10 are only examples of the first member and the second member, and any member other than the magnet may be used as the first member, or the second member may be used as the first member. Any member other than the yoke may be used as the member.

(IV-2) In the embodiment described above, the cylindrical magnet 100 is used as the first member, and the disc-shaped bottom 200b with the edge 200a rising up is used as the second member. Although a case has been described in which a dish-shaped yoke 200 is used, it goes without saying that the shape of the first member and the shape of the second member are not limited to this. That is, these are only examples of the shapes of the first member and the second member, and the first member may have a prismatic shape such as a triangular prism shape, a quadrangular prism shape, or a polygonal prism shape larger than a pentagonal prism shape. Alternatively, as the second member, a dish-shaped member having a bottom with a triangular plate shape, a square plate shape, or a polygonal plate shape larger than a pentagonal plate shape with rising edges may be used. Good too.

(IV-3) In the embodiment described above, a case has been described in which the elongated hole-shaped through hole 20 is formed in the yoke 10 as the second member, but the shape of the through hole 20 is limited to this. Of course, it is not a thing. That is, the shape of the through hole formed in the second member may be a circular hole shape, an elliptical hole shape, a triangular hole shape, a square hole shape, or a polygonal hole shape of a pentagonal hole shape or more. good.

(IV-4) In the embodiment described above, a case has been described in which four through holes 20 are formed in the yoke 10 as the second member, but the number of through holes 20 formed is limited to this. Of course, it is not a thing. That is, the number of through holes formed in the second member may be one, two, three, or any number of five or more, depending on the design conditions such as the dimensions of the second member. . Note that the greater the number of through holes, the more accurately the operator can visually check the adhesive application status.

(IV-5) In the above-described embodiment, a case was explained in which the four through holes 20 formed in the yoke 10 as the second member all had the same size and the same shape. Of course, the through holes 20 are not limited to all having the same size and shape. That is, when forming a plurality of through holes in the second member, holes of different sizes and shapes may coexist depending on design conditions such as the dimensions of the second member.

(IV-6) In the above-described embodiment, a solid cylindrical magnet 100 is used as the first member, and a disk-shaped bottom portion with an upright edge 200a is used as the second member. Although a case has been described in which a solid plate-shaped yoke 200 including a yoke 200b is used, it goes without saying that the first member and the second member are not limited to being solid. That is, one of the first member and the second member may be solid and the other hollow, or both the first member and the second member may be hollow.

(IV-7) In the embodiment described above, the four through holes 20 are arranged at equal intervals along the circumferential surface of the edge 12 of the yoke 10, but the intervals at which the through holes 20 are arranged are equal intervals. Of course, it is not limited to. That is, when forming the through holes in the edge of the second member, the through holes may be formed at different intervals along the circumferential surface of the edge.

(IV-8) Of course, the embodiments described above and the embodiments and modifications shown in (IV-1) to (IV-7) above may be combined as appropriate.

INDUSTRIAL APPLICATION This invention is extremely useful when manufacturing the structure formed by joining the magnet and yoke used when stabilizing a magnetic circuit in a circulator, an isolator, etc.

10 Yoke 12 Edge 12a Outer surface 12b Inner surface 14 Bottom 14a Inner bottom surface 16 Notch 20 Through hole 30 Structure 100 Magnet 100a Lower bottom surface 200 Yoke 200a Edge 200b Bottom 200bb Inner bottom surface 300 Structure 400 Adhesive 500 work 600 hand-held electric dispenser

Claims (6)

One end surface of the columnar first member and the inner bottom surface surrounded by the inner circumferential surface of the edge at the bottom of the dish-shaped second member formed with the edge rising up are bonded with an adhesive. A joint monitoring structure,
A region near the bottom of the edge of the second member, penetrating the outer peripheral surface of the edge of the second member and the inner peripheral surface, and adjacent to the inner peripheral surface of the inner bottom surface. forming a through hole communicating from the outer circumferential surface to the inner bottom surface by digging downward into the surface;
The joint monitoring structure, wherein the through hole does not reach an outer bottom surface of the bottom portion that is opposite to the inner bottom surface. The joint monitoring structure according to claim 1,
A joint monitoring structure, wherein a plurality of the through holes are arranged at equal intervals along the circumferential surface of the edge. The joint monitoring structure according to claim 1 or 2,
The joint monitoring structure, wherein the through hole has an elongated hole shape extending in a direction parallel to the inner bottom surface. The joint monitoring structure according to claim 1 or 2,
the first member is a magnet,
The second member is a yoke. A joint monitoring structure characterized in that the second member is a yoke. The joint monitoring structure according to claim 3,
the first member is a magnet,
The second member is a yoke. A joint monitoring structure characterized in that the second member is a yoke. The joint monitoring structure according to claim 5,
A joint monitoring structure characterized in that four of the through holes are formed at equal intervals.

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