JP7182479B2 - Fitting structure and fitting member - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fitting structure and a fitting member used when connecting structural members.

Structural members are used in various applications and situations, such as boxes, cases of various devices, housings, walls, and building materials. Some of these structural members are integrally formed in advance in terms of size, shape and mode. On the other hand, even the same structural member may differ in size and shape depending on its use and occasion. For example, even device cases with the same purpose may differ in size and shape depending on the device to be accommodated.

Alternatively, walls, building materials, and the like may be used in various sizes according to various uses and situations. This is because the sizes of walls and buildings that are required vary depending on the building object.

For this reason, these structural members are not integrally formed in sizes and shapes that correspond to the application and situation, but are finished in the required size and shape by connecting multiple structural members in unit units. There are many things. For example, in the case of an equipment case or box, a plurality of structural members may be connected to form equipment cases or boxes of different sizes. Alternatively, with wall material, multiple structural members can be connected to create walls of different dimensions.

Thus, a wide variety of structural members are widely used, depending on the end use and occasion. Further, as noted above, multiple structural members can be joined together to form an object sized and shaped to suit the final application or occasion.

In connecting the structural members together, the ends of the structural members may be welded or glued together. However, end-to-end welding or gluing can result in insufficient joint strength. Furthermore, the work processes and costs for welding and bonding are increased, and it is unsuitable for forming the final object.

For this reason, when connecting the structural members together, parts of the structural members are fitted together. For this reason, a fitting structure is provided in a part of the structural member (a fitting member is provided).

Various materials such as resins, metals, and alloys are used as materials for the structural members. These structural members are formed by various processing methods, but are sometimes manufactured by extrusion in order to reduce the manufacturing cost and simplify the manufacturing process. Extrusion involves extruding a metal or alloy into a mold to form a shape. This extrusion process produces a structural member with a mating structure.

The fitting structures of the structural members manufactured in this manner are fitted to each other to connect the plurality of structural members. Some prior art mating structures have a so-called staggered tenon-like structure. Structural members are fitted to each other by aligning the convex portion and the concave portion. At this time, since the convex portion and the concave portion have tapered portions, they are also connected after they are fitted.

FIG. 11 is a schematic diagram showing a fitting structure in the prior art. The structural members are fitted together by fitting the convex portion 101 and the concave portion 102 together. Here, structural member 110 comprises protrusions 101 and structural member 120 comprises recesses 102 . However, as will be discussed later, the engagement is due to surface contact between the convex portion 101 and the concave portion 102 like a tenon. Therefore, if the machining accuracy is insufficient, a gap 200 will occur. If the gap 200 occurs, there is a problem of insufficient fitting.

Techniques for fitting structures for connecting structural members in this way have been proposed (see Patent Documents 1 and 2, for example).

Japanese Unexamined Patent Application Publication No. 2013-133901 Japanese Patent No. 6228703

In Patent Document 1, a connecting fitting 30 that connects a support 10 and a beam 20 is inserted inside the support 10, and the support 10 has a recessed plate 11 that is recessed inward and a surface that closes the opening of the recessed plate 11. A hollow portion 13 surrounded by the plate 12 is formed, and the recessed plate 11 and the connecting fitting 30 are fastened with a bolt 40 having a head portion 42 housed in the hollow portion 13, and the head portion 42 has a surface. It is covered with a bolt cap 43 inserted into a hole formed in plate 12 . The bolts 40 are not conspicuous in appearance, and the dents of the struts 10 due to fastening of the bolts 40 do not appear on the surface, so that the design is excellent. Disclosed is a connection structure of frame members that is resistant to corrosion because the bolts 40 are not exposed.

Patent Literature 1 discloses a technique of connecting frame members by fitting recesses and protrusions, although it is different from a general "tenon".

However, this connection structure has the following problems.

(Problem 1) In order to securely connect the frame members (so as not to come off or loosen) by fitting the convex portion and the concave portion, there should be no gap between the respective fitting portions of the convex portion and the concave portion. It should fit snugly. However, in order to form such a tight fit without gaps, it is necessary to process and manufacture the members precisely. It is necessary to improve the accuracy during molding and to improve the processing accuracy by polishing after molding. Therefore, there is a problem that the manufacturing time and cost increase in manufacturing the frame member including the fitting portion.

(Problem 2) In order to deal with Problem 1, if the fitting portion between the projection and the recess is manufactured loosely (leaving some play), it is necessary to realize the connection with an adhesive, screws, or the like. In this case, there is a problem that the process of connecting by fitting increases. As a matter of course, the inconvenience of disengaging the fitting also increases.

Patent Document 2 discloses that the joint structure of wood is such that, with the tenon 6 fitted into the mortise 8, by driving the head 12b of the pin 12 from one opening side of the pin holes 10a to 10c, at least the mortise 8 A part of the pin 12 penetrates at least a part of the tenon 6, and the pin joints 14a to 14c are formed by bringing the tip 12a of the pin 12 to the other opening side of the pin holes 10a to 10c. A pin for joining wood is disclosed that includes a pipe 30 having a hollow 30a extending from at least near the tip 12a to near the head 12b.

Patent Literature 2 discloses a technique of fixing the protrusions and recesses with pins after combining the protrusions and recesses.

However, Patent Document 2 also has Problem 2 (and Problem 1 in some cases) as described above. In order to increase the fixing level by fitting the convex portion and the concave portion, it is necessary to improve the processing accuracy, and there is a problem of an increase in manufacturing time and manufacturing cost. In addition, the technique disclosed in Patent Document 2, in which a pin is used to fix the fitting, has the problem 2 described above. In other words, the number of steps of connecting by fitting increases due to the number of steps using pins for fixing. Moreover, it is inconvenient to release the fitting.

In order to summarize the above, the fitting structure for connecting the structural members in the prior art has the problems 1 and 2 as described above. In particular, in order to realize fitting with a sufficient fixing force only by fitting the fitting structures together, it is necessary to ensure sufficient processing accuracy of the fitting portion. In this case, manufacturing and processing time and costs increase. In particular, when mating by surface contact, there is a problem that fitting for mating becomes difficult if it is made tight enough to produce a sufficient fixation. Conversely, there is a problem that the fixing force is weakened if the play is left. Of course, if the number of machining steps is reduced, there is a problem of insufficient machining accuracy.

This processing problem is particularly serious when the structural members and fitting portions are made of metals or alloys.

Such a problem of processing accuracy arises in the fitting by surface contact between the convex portion and the concave portion as disclosed in Patent Documents 1 and 2. This is the problem explained in FIG.

Alternatively, if the surface contact portion between the convex portion and the concave portion is fixed in advance by increasing the play in the surface contact portion, there is a problem that the steps of the fitting work are increased. Moreover, in addition to the inconvenience during work, there is also the problem of inconvenience when releasing the engagement.

In particular, when it is necessary to change the shape and area by connecting structural members, these problems become more serious. Because it is necessary to connect and disconnect as many and as many structural members as necessary, the above problems are not favorable to this need. Moreover, cost reduction is an essential condition when connecting structural members to realize cases, housings, walls, and building materials for various devices. In this respect as well, the above-described problem is undesirable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fitting structure and a fitting member for connecting structural members, which does not require adhesives or screws while suppressing processing and manufacturing costs.

In view of the above problems, the fitting structure of the present invention is a fitting structure for connecting structural members,
a receiving member;
a fitting member;
a receiving member inner peripheral portion of the receiving member;
a receiving member outer peripheral portion of the receiving member;
a fitting member inner peripheral portion of the fitting member;
a fitting member outer peripheral portion of the fitting member;
a receiving member first convex portion, a receiving member second convex portion, and a receiving member third convex portion included in the inner peripheral portion of the receiving member;
a receiving member locking portion provided on the outer peripheral portion of the receiving member;
a fitting member first protrusion, a fitting member second protrusion, and a fitting member third protrusion included in the inner peripheral portion of the fitting member;
a fitting member locking portion of the outer peripheral portion of the fitting member;
The receiving member first convex portion and the fitting member first convex portion have a contact correspondence relationship,
The receiving member second convex portion and the fitting member second convex portion have a contact correspondence relationship,
The receiving member third convex portion and the fitting member third convex portion have a contact correspondence relationship,
The receiving member locking portion and the fitting member locking portion have a locking correspondence relationship,
Fixed and held by contacting in the contact correspondence relationship,
Locking and holding are performed by locking in the locking correspondence relationship.

The fitting structure of the present invention can achieve fitting and fixing by point contact instead of surface contact. Therefore, it is possible to reduce the time and cost in processing and manufacturing the fitting portion without strictly requiring processing accuracy corresponding to fitting and fixing. In particular, it becomes possible to manufacture the fitting portion only by extrusion processing of metal or alloy, which greatly reduces the manufacturing cost.

In addition, since a plurality of point contacts are generated by rotation, even if the rotational force increases, it is possible to reduce problems such as movement in a direction in which fitting and fixing are increased and loosening.

In addition, the engagement between the stops allows the fixation to be maintained after fitting. Thereby, the fixing force in fitting can be increased.

On the other hand, the fitting can be easily released by releasing the engagement between the stop portions and rotating the fitting in the opposite direction to that at the time of fitting. It is also easy to repeat mating and releasing. With this fitting structure, the structural members can be freely connected and removed, and it becomes easy to realize an article having a desired shape and area according to the application.

FIG. 3 is a side view of the fitting member and the fitting member according to the first embodiment of the present invention; It is a side view which shows the fitting state of the fitting structure in Embodiment 1 of this invention. FIG. 4 is a side view of the receiving member according to Embodiment 1 of the present invention; FIG. 4 is a side view of the fitting member according to Embodiment 1 of the present invention; FIG. 11 is a side view of a receiving member according to Embodiment 2 of the present invention; FIG. 8 is a side view of a fitting member according to Embodiment 2 of the present invention; FIG. 10 is a side view showing structural members connected by fitting according to Embodiment 2 of the present invention; FIG. 4 is a side view showing part of a structure according to Embodiment 2 of the present invention; FIG. 4 is a side view of a structure according to Embodiment 2 of the present invention; FIG. 11 is a perspective view of a frame realized by a fitting structure according to Embodiment 2 of the present invention; It is a schematic diagram which shows the fitting structure in a prior art.

A fitting structure according to a first aspect of the present invention is a fitting structure for connecting structural members,
a receiving member;
a fitting member;
a receiving member inner peripheral portion of the receiving member;
a receiving member outer peripheral portion of the receiving member;
a fitting member inner peripheral portion of the fitting member;
a fitting member outer peripheral portion of the fitting member;
a receiving member first convex portion, a receiving member second convex portion, and a receiving member third convex portion included in the inner peripheral portion of the receiving member;
a receiving member locking portion provided on the outer peripheral portion of the receiving member;
a fitting member first protrusion, a fitting member second protrusion, and a fitting member third protrusion included in the inner peripheral portion of the fitting member;
a fitting member locking portion of the outer peripheral portion of the fitting member;
The receiving member first convex portion and the fitting member first convex portion have a contact correspondence relationship,
The receiving member second convex portion and the fitting member second convex portion have a contact correspondence relationship,
The receiving member third convex portion and the fitting member third convex portion have a contact correspondence relationship,
The receiving member locking portion and the fitting member locking portion have a locking correspondence relationship,
Fixed and held by contacting in the contact correspondence relationship,
Locking and holding are performed by locking in the locking correspondence relationship.

With this configuration, fitting can be realized only by combining and rotating the receiving member and the fitting member.

In the fitting structure according to the second aspect of the present invention, in addition to the first aspect, the inner peripheral portion of the receiving member is inserted inside the inner peripheral portion of the fitting member, and the fitting member is fitted to the receiving member. When rotated in the direction
The first protrusion of the receiving member and the first protrusion of the fitting member are crimped,
The receiving member second convex portion and the fitting member second convex portion are crimped,
The receiving member third projection and the fitting member third projection are crimped.

With this configuration, the receiving member and the fitting member are fitted together by caulking the plurality of convex portions.

In the fitting structure according to the third aspect of the present invention, in addition to the second aspect, the receiving member first protrusion and the fitting member first protrusion are crimped,
The receiving member second convex portion and the fitting member second convex portion are crimped,
The receiving member and the fitting member are fitted together by caulking the receiving member third projection and the fitting member third projection.

With this configuration, fitting is achieved by caulking the convex portions.

In the fitting structure according to the fourth aspect of the present invention, in addition to the third aspect, the receiving member first protrusion and the fitting member first protrusion are crimped,
The receiving member second convex portion and the fitting member second convex portion are crimped,
When the receiving member third convex portion and the fitting member third convex portion are crimped,
The receiving member locking portion and the fitting member locking portion are crimped to maintain the fitted state between the receiving member and the fitting member.

With this configuration, the engagement between the engagement portions maintains the fitted state and prevents unexpected separation of the fitted state.

In the fitting structure according to the fifth aspect of the present invention, in addition to any one of the second to fourth aspects, the contact position between the receiving member first protrusion and the fitting member first protrusion, an arc rotation axis formed by a contact position between the protrusion and the second protrusion of the fitting member and a contact position between the third protrusion of the receiving member and the third protrusion of the fitting member;
It does not match the rotation axis of the inner periphery of the receiving member.
The caulking between the receiving member first convex portion and the fitting member first convex portion is strengthened,
The caulking of the receiving member second convex portion and the fitting member second convex portion is strengthened,
The caulking of the receiving member third protrusion and the fitting member third protrusion is strengthened.

With this configuration, even when the rotation is too strong or when a strong force is applied due to the rotation, it is possible to prevent the fitting from becoming weak.

In the fitting structure according to the sixth invention of the present invention, in addition to the second to fifth inventions, when the fitting member is rotated with respect to the receiving member in the releasing direction opposite to the fitting direction, ,
The caulking between the receiving member first convex portion and the fitting member first convex portion is released,
The caulking between the receiving member second convex portion and the fitting member second convex portion is released,
The caulking of the receiving member third convex portion and the fitting member third convex portion is released, and the fitted state is released.

With this configuration, the engagement can be released only by turning.

In the fitting structure according to the seventh invention of the present invention, in addition to the sixth invention, when the locked state between the receiving member locking portion and the fitting member locking portion is released, the receiving member The fitting member becomes rotatable in the releasing direction.

With this configuration, when the locked state of the locking portion is released, the fitting can be released only by turning. Therefore, fitting and releasing can be repeated.

In the fitting structure according to the eighth aspect of the present invention, in addition to any one of the first to seventh aspects, the receiving member is connected to the first structural member, and the fitting member is connected to the second structural member. and
The first structural member and the second structural member are connected by fitting the receiving member and the fitting member.

With this configuration, it is possible to realize a structure whose size can be changed by connecting the structural members.

In the fitting structure according to the ninth invention of the present invention, in addition to any one of the first to ninth inventions, the first structural member and the second structural member are separated by releasing the fitting between the receiving member and the fitting member. are separated.

With this configuration, the number of structural members constituting the structure can be reduced, and the size of the structure can also be reduced.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a side view of a fitting member and the fitting member according to Embodiment 1 of the present invention. A fitting structure 1 appears in the fitting member. In FIG. 1 and the subsequent description, the fitting structure is described, but this is also the description of the fitting member. A fitting structure 1 is a structure appearing in a member that needs to be fitted with a connecting member, and when the fitting structure 1 is realized as a member, it becomes a fitting member. The description of the fitting structure 1 below can be replaced with the description of the fitting member.

The fitting structure 1 comprises a receiving member 2 and a fitting member 3 . The fitting is realized by fitting the receiving member 2 and the fitting member 3, and the fitting is released by removing them. The receiving member 2 and the fitting member 3 are separate members, and may be separated physically as shown in FIG. Any mode may be adopted as long as the receiving member 2 and the fitting member 3 can be combined and disengaged so that fitting and releasing can be realized.

The receiving member 2 includes a receiving member inner peripheral portion 25 and a receiving member outer peripheral portion 26 . The receiving member inner peripheral portion 25 and the receiving member outer peripheral portion 26 are part of the receiving member 2 . The receiving member inner peripheral portion 25 includes a receiving member first convex portion 21 , a receiving member second convex portion 22 , and a receiving member third convex portion 23 . The receiving member outer peripheral portion 26 includes the receiving member locking portion 24 .

In addition, as shown in FIG. 1, the receiving member 2 has an inner circumferential portion 25 of the receiving member that has a part of curved line like an arc. , and also has a portion of an arc-like curve. Of course, it is part of a curve, such as an arc, and does not have to have a complete arc or curve.

The fitting member 3 comprises a fitting member inner peripheral portion 35 and a fitting member outer peripheral portion 36 . The fitting member inner peripheral portion 35 has a portion of a curved line such as an arc. A fitting member outer periphery 36 extends outside this fitting member inner periphery 35 . The fitting member inner peripheral portion 35 and the fitting member outer peripheral portion 36 are part of the fitting member 3 .

The fitting member inner peripheral portion 35 includes a fitting member first protrusion 31 , a fitting member second protrusion 32 , and a fitting member third protrusion 33 . The fitting member outer peripheral portion 36 includes a fitting member locking portion 34 . These are structures corresponding to the receiving member 2 . Although the detailed shape is different, since the fitting structure 1 is realized by combining the receiving member 2 and the fitting member 3, each element provided in the receiving member 2 and each element provided in the fitting member 3 are: have a correspondence relationship.

That is, they have the following correspondence relationships.

The receiving member first convex portion 21 and the fitting member first convex portion 31 have a contact correspondence relationship.
The receiving member second convex portion 22 and the fitting member second convex portion 32 have a contact correspondence relationship.
The receiving member third convex portion 23 and the fitting member third convex portion 33 have a contact correspondence relationship.
The receiving member locking portion 24 and the fitting member locking portion 34 have a locking correspondence relationship.

The contact correspondence relationship is a relationship in which the receiving member 2 and the fitting member 3 are brought into contact with each other and crimped (fitted together) when the receiving member 2 and the fitting member 3 are combined to achieve fitting. The locking correspondence relationship is a relationship that realizes mutual locking when the receiving member 2 and the fitting member 3 are combined to realize fitting.

In other words, in the contact correspondence relationship, the fixing and holding are performed by contact. Locking and holding are performed by locking in the locking correspondence relationship.

(mating state)
FIG. 2 is a side view showing a fitted state of the fitting structure according to Embodiment 1 of the present invention. The state of FIG. 1 shows the fitting structure 1 before fitting. The receiving member inner peripheral portion 25 is placed inside the fitting member inner peripheral portion 35 . At this time, the fitting member outer peripheral portion 36 is inserted inside the receiving member outer peripheral portion 26 . Both FIGS. 1 and 2 show this state. Thus, first, the receiving member 2 and the fitting member 3 are combined.

Next, the fitting member 3 is rotated with respect to the receiving member 2 in the fitting direction shown in FIG. In FIG. 2, arrows indicate the fitting direction. As will be described later, an arrow on the side opposite to the fitting direction indicates the releasing direction. When the fitting member 3 is rotated in the fitting direction with respect to the receiving member 2, the receiving member inner peripheral portion 25 and the fitting member inner peripheral portion 35 come into contact with each other due to the contact correspondence relationship described above. Similarly, the receiving member outer peripheral portion 26 and the fitting member outer peripheral portion 36 are locked by the above-described locking correspondence relationship.

When the rotation progresses in the fitting direction, the state shown in FIGS. 1 to 2 is obtained. In this state, the contact correspondence becomes a state of being actually crimped, and the locking correspondence becomes a state of being actually locked.

The receiving member first convex portion 21 and the fitting member first convex portion 31 are crimped. Each of the contact correspondence relationships actually contacts and is fixed to each other by the rotation. This is the crimped state. Similarly, the receiving member second convex portion 22 and the fitting member second convex portion 32 are crimped. Together, the receiving member third convex portion 23 and the fitting member third convex portion 33 are crimped. FIG. 2 shows this state.

In this manner, the receiving member first convex portion 21 and the fitting member second convex portion 31 are crimped, the receiving member second convex portion 22 and the fitting member second convex portion 32 are crimped, and the receiving member third convex portion 23 is crimped. When the fitting member third convex portion 33 is crimped, the receiving member inner peripheral portion 25 and the fitting member inner peripheral portion 35 are fitted. That is, the receiving member 2 and the fitting member 3 are in a fitted state.

In a position state in which the receiving member first convex portion 21 and the fitting member first convex portion 31 are in contact with each other after being rotated in the rotating direction, the receiving member second convex portion 22 and the fitting member second convex portion 32 are also A contact state is established, and the receiving member third convex portion 23 and the fitting member third convex portion 33 are also brought into a contact state. The receiving member 2 and the fitting member 3 also have such a positional relationship. Therefore, when the receiving member inner peripheral portion 25 is inserted into the fitting member inner peripheral portion 35 and rotated in the fitting direction, the convex portions are crimped together as described above. By this simultaneous crimping, the receiving member 2 and the fitting member 3 are brought into a fitted state.

Further, the receiving member first convex portion 21 and the fitting member first convex portion 31 are crimped, the receiving member second convex portion 22 and the fitting member second convex portion 32 are crimped, and the receiving member third convex portion 23 is crimped. When the fitting member third convex portion 33 is crimped, the receiving member locking portion 24 and the fitting member locking portion 34 are crimped to be in a locked state. The positional relationship between the receiving member locking portion 24 and the fitting member locking portion 34 also corresponds to the contact position of each projection.

Therefore, as shown in FIG. 2, when it is rotated in the fitting direction and reaches a predetermined position (the position where the receiving member first convex portion 21 and the fitting member first convex portion 31 are crimped), all the convex portions are closed. The portion and the locking portion are crimped. This crimped state brings the receiving member 2 and the fitting member 3 into a fitted state. Further, the fitted state is maintained by the locked state between the receiving member locking portion 24 and the fitting member locking portion 34 .

In other words, fitting is achieved by mutual caulking of the first to third protrusions. In addition, the mated state is maintained by mutual caulking of the locking portions. In this manner, the receiving member 2 and the fitting member 3 can achieve the fitting of the fitting structure 1 . In addition, since the fitted state can be sufficiently maintained, the fitting structure 1 can achieve a strong fitting force.

In addition, it does not require sub-millimeter-level processing accuracy, unlike the tenon fitting of the prior art. The fitting of the tenons in the prior art is based on surface contact, and requires processing accuracy in submillimeter units for reliable fitting.

On the other hand, in the fitting structure 1 of Embodiment 1, point contact at a plurality of locations on the first to third protrusions (meaning not only mathematical points but also narrow surface areas) , the fitting can be realized. Therefore, as long as the corresponding positional relationship between the first to third protrusions can be realized, fine machining accuracy for the entire wide surface such as tenon is not required.

In addition, since the engagement between the receiving member engaging portion 24 and the fitting member engaging portion 34 is maintained, the engaged state can be maintained without very fine machining accuracy.

Prior art fittings have sometimes required adhesives, screws, and the like. On the other hand, the fitting structure 1 of Embodiment 1 is fitted only by crimping the first convex portion, and thus does not require an adhesive or a screw. As will be described later, the mated state is released only by turning in the releasing direction, so that it is easy to repeat mating and releasing.

In addition, fitting can be realized only by rotating the receiving member 2 and the fitting member 3 in a combined state. Therefore, by applying the fitting structure 1 to various structural members, the connection of the structural members can be easily realized. In addition, the fitting can be easily performed by anyone, and does not require any special technique or skilled technique. Therefore, when it is necessary to connect the structural members, anyone can easily perform the fitting operation. Similarly, when removing the fitted structural members, anyone can easily release the fitting.

Further, by using a plurality of fitting structures 1, there is an advantage that more structural members can be connected. As a result, it is possible to flexibly increase (or reduce) the size of the casing by connecting the structural members.

(Releasing mating)
In FIG. 2, as described above, the receiving member 2 and the fitting member 3 are fitted, and the fitting structure 1 is in the fitted state. From this state, when the fitting member 3 is rotated with respect to the receiving member 2 in the releasing direction (indicated by the arrow in FIG. 2) opposite to the fitting direction, the fitting is released.

By rotating in the release direction, the caulking between the receiving member first convex portion 21 and the fitting member first convex portion 31 is released, the caulking between the receiving member second convex portion 22 and the fitting member second convex portion 32 is released, The caulking between the receiving member third convex portion 23 and the fitting member third convex portion 33 is released.

By disengaging the crimping of these protrusions, the fitting state between the receiving member inner peripheral portion 25 and the fitting member inner peripheral portion 35 is released, and the fitting between the receiving member 2 and the fitting member 3 is released.

Here, when rotating in the releasing direction, the locked state between the receiving member locking portion 24 and the fitting member locking portion 34 is released by turning with a strong force. Alternatively, the locked state is released manually. By canceling this locked state, it becomes possible to rotate as described above. When the protrusions are disengaged from each other by the rotation, the fitting between the receiving member 2 and the fitting member 3 is released. The state in FIG. 2 changes to that in FIG.

In this way, the fitting structure 1 can repeat the combined state (the released state without being fitted) and the fitted state shown in FIG. By repeating this, it is possible to change between engagement and release. Thus, the structural members comprising the fitting structure 1 can be connected by fitting and separated by releasing.

Of course, the fitting structure 1 is the same even if it is grasped as a fitting member.

(Receiving member)
FIG. 3 is a side view of the receiving member according to Embodiment 1 of the present invention. The receiving member 2 described in FIGS. 1 and 2 is shown.

As described above, the receiving member 2 includes the receiving member inner peripheral portion 25, the receiving member outer peripheral portion 26, the receiving member first convex portion 21, the receiving member second convex portion 22, the receiving member third convex portion 23, and the receiving member locking portion. A portion 24 is provided. Further, the receiving member inner peripheral portion 25 is inserted into and combined with the fitting member inner peripheral portion 35 . When inserting, it may be inserted so as to pass through the receiving member 2 and the fitting member 3 in the penetrating direction in the drawing of FIG.

The receiving member 2 is used in combination with the fitting member 3 . Therefore, although it is a separate separate member, it may be connected to the fitting member 3 at some portion. In this case, it suffices that they are connected with flexibility that allows combination and rotation.

Also, the shape of the receiving member 2 shown in FIG. 3 is an example. The configuration is not limited to the shape shown in FIG. 3 as long as it is possible to fit by caulking a plurality of protrusions, to hold the fitting by locking the locking members, and to fit and release by turning. In addition, although the three convex portions of the receiving member first convex portion 21 to the receiving member third convex portion 23 are provided, four or more convex portions may be provided like the receiving member fourth convex portion.

(Fitting member)
4 is a side view of the fitting member according to Embodiment 1 of the present invention. FIG. The fitting member 3 described in FIGS. 1 and 2 is shown. The fitting member 3 constitutes a fitting structure 1 (fitting member) together with the receiving member 2 .

As described above, the fitting member 3 comprises a fitting member inner periphery 35 and a fitting member outer periphery 36 . As shown in FIG. 3 , the fitting member inner peripheral portion 35 and the fitting member outer peripheral portion 36 are part of the fitting member 3 . In addition, the fitting member inner peripheral portion 35 has a shape and size that allow the receiving member inner peripheral portion 25 to be inserted therein. In addition, the receiving member inner peripheral portion 25 and the fitting member inner peripheral portion 35 have curved lines such as arcs so as to be rotatably combined with the receiving member inner peripheral portion 25 .

The fitting member inner peripheral portion 35 has a fitting member first protrusion 31 , a fitting member second protrusion 32 , and a fitting member third protrusion 33 . The fitting member outer peripheral portion 36 has a fitting member locking portion 34 . These have contact correspondence with the projections of the receiving member and have engagement correspondence with the locking portion of the receiving member 2 . In combination with this receiving member 2, fitting is realized only by turning in the turning direction. Conversely, the engagement is released only by turning in the releasing direction.

Similarly to the receiving member 2, the fitting member 3 is not limited to the shape shown in FIG. 4 as long as it can be fitted and released by turning. Also, the fitting member 3 may be provided with four or more projections like the fitting member fourth projection in accordance with the number of projections of the receiving member 2 . At this time, the number and positions of the projections correspond to the number and positions of the projections of the receiving member 2 . Of course, the same applies to the locking portion.

(Strengthen mating)
As described above, only by rotating the receiving member 2 and the fitting member 3 in the fitting direction in a predetermined state (with the receiving member inner peripheral portion 25 inside the fitting member inner peripheral portion 35), The receiving member 2 and the fitting member 3 are fitted. By this fitting, the fitting structure 1 (fitting member) can achieve fitting.

Here, the receiving member first convex portion 21 , the receiving member second convex portion 22 , and the receiving member third convex portion 23 are provided along the receiving member inner peripheral portion 25 . As described above, the receiving member inner peripheral portion 25 has an arcuate curve. Therefore, an imaginary line connecting the receiving member first convex portion 21, the receiving member second convex portion 22, and the receiving member third convex portion 23 has an arc shape.

Similarly, the fitting member first protrusion 31 , the fitting member second protrusion 32 , and the fitting member third protrusion 33 are provided along the fitting member inner peripheral portion 35 . As described above, the fitting member inner peripheral portion 35 has an arcuate curve. Therefore, an imaginary line connecting the fitting member first convex portion 31, the fitting member second convex portion 32, and the fitting member third convex portion 33 has an arc shape.

In this state, the contact position between the receiving member first convex portion 21 and the fitting member first convex portion 31, the contact position between the receiving member second convex portion 22 and the fitting member second convex portion 32, the contact position between the receiving member third convex portion 22 and the fitting member second convex portion 32, The rotation axis of the arc formed by the contact position between the protrusion 23 and the fitting member third protrusion 33 does not match the rotation axis of the receiving member inner peripheral portion 25 (fitting member inner peripheral portion 35). . This means that the centers, which are the rotation axes of the respective arcs, do not match.

Due to this mismatch, when the rotation in the fitting direction is to proceed further, the crimping of the receiving member first convex portion 21 and the fitting member first convex portion 31 is strengthened, and the receiving member second convex portion 31 is strengthened. The caulking between the convex portion 22 and the fitting member second convex portion 32 is strengthened, and the caulking between the receiving member third convex portion 23 and the fitting member third convex portion 33 is strengthened. That is, even if a force is applied to cause excessive rotation in the fitting direction, the caulking force only increases, and although fitting may be strengthened, fitting is not weakened.

Fitting is realized only by turning, but since the fitting is not weakened even if it is strengthened by excessive turning, there is no adverse effect on the work of connecting the structural members as necessary. Of course, even if the rotation is weak, if they are fitted by caulking, the engagement is held by the engagement members, so that the problem of disengagement can be prevented.

Alternatively, even if a turning force is erroneously applied in the disengagement direction after the fitting structure 1 has been fitted, the fitting can be performed by locking the receiving member locking portion 24 and the fitting member locking portion 34. You can also prevent it from coming off.

In this way, when the structural members are connected or separated from each other as required, the fitting and separation can be performed only by turning. At this time, it is possible to prevent insufficient fitting or disengagement due to excessive or insufficient rotation.

Further, by providing the fourth protrusion and the like in addition to the first to third protrusions, it is preferable to increase the contact positions for fitting and increase the fitting force. It should be noted that in this case, it is preferable that the simplification of fitting only by turning is not hindered.

In addition, since the fitting can be performed only by the turning operation after combining and the fitting force is sufficient, the fitting operation can be performed easily when the structural members need to be connected. Therefore, it is possible to easily connect the structural members at the work site. The simplicity of this also facilitates multiple connections of structural members. Since the processing accuracy required for surface contact is not required, fitting failures are less likely to occur, and structural members can be securely and easily connected.

Moreover, since it is not necessary to manufacture the receiving member 2 and the fitting member 3 with high processing accuracy, they can be manufactured by an inexpensive manufacturing method such as metal extrusion processing. As a result, cost reduction of the fitting structure 1 (fitting member) can be realized. In the case of a fitting structure with surface contact such as a tenon, it is necessary to improve the processing accuracy of the contact surface, and an extra process such as a polishing process is required. On the other hand, the fitting structure 1 of the present invention is based only on point-contact combination, so it is possible to reduce such an extra process for improving processing accuracy. Therefore, it is possible to reduce the problem of insufficient fitting when actual fitting is realized. Of course, manufacturing costs and work costs can be reduced.

Further, since the engagement can be released only by turning in the release direction, separation after connection can be easily performed. Therefore, it becomes easy to realize a device, a housing, a structure, etc. whose size is desired to be changed by connecting or separating the structural members. In particular, since screws and adhesives are not used for fitting, the fitting can be removed, and the fitting can be re-fitted by turning.

As described above, the fitting structure 1 (fitting member) of the first embodiment can repeat fitting and separation with a high fitting force only by assembling and turning. As a result, it becomes easy to change the size and shape of various devices, housings, structures, and the like.

These descriptions are the same even when the fitting structure 1 is a fitting member. The fitting member is also the same as that described in the first embodiment.

(Embodiment 2)

Next, Embodiment 2 will be described. FIG. 2 illustrates that the fitting structure 1 is used for connecting structural members. FIG. 5 is a side view of a receiving member according to Embodiment 2 of the present invention. FIG. 6 is a side view of a fitting member according to Embodiment 2 of the present invention.

As shown in FIG. 5, the receiving member 2 is connected to the first structural member 28. As shown in FIG. A form in which a part of the receiving member 2 is the first structural member 28 may be used, or the first structural member 28 may be connected to the receiving member 2 in a form of connection, combination, or the like.

Similarly, as shown in FIG. 6, the fitting member 3 is connected to a second structural member 38 . The second structural member 38 may be part of the fitting member 3, or the second structural member 38 may be connected to the fitting member 3 in a form of connection, combination, or the like.

5 and 6 illustrate the concept that the first structural member 28 and the second structural member 38 are connected by the fitting structure 1, so that the first structural member 28 and the second structural member 38 are simply shown in a simple shape. Of course, it can be such a simple shape, or it can be something larger. Alternatively, the shapes of the first structural member 28 and the second structural member 38 may be complicated according to the situation such as the structure formed by the structural members.

As described in Embodiment 1, in the fitting structure 1, fitting is achieved by fitting the receiving member 2 and the fitting member 3 together. By this fitting, the first structural member 28 and the second structural member 38 are connected. FIG. 7 is a side view showing structural members connected by fitting according to Embodiment 2 of the present invention.

As shown in FIG. 7, when the fitting structure 1 is in the fitted state, the first structural member 28 and the second structural member 38 are connected. In FIG. 7, the first structural member 28 and the second structural member 38 are in a connected state. That is, by connecting the first structural member 28 and the second structural member 38, the length (width) of the entire structural member can be increased.

For example, if the structural member is an element that forms a structure or housing, the connection between the first structural member 28 and the second structural member 38 can increase the size of the structure or housing. . This can be realized only by fitting the fitting structure 1 (fitting member).

Moreover, if the fitting structure 1 is also provided at the opposite ends of the first structural member 28 and the second structural member 38, the third structural member and the fourth structural member can also be connected continuously. This is because if the fitting in the fitting structure 1 at the opposite end is realized, another structural member is further connected. By connecting a large number of structural members in this manner, it is possible to easily increase the size of a structure or a housing having the structural members as elements.

This can be realized only by fitting the fitting structure 1 . As described in Embodiment 1, the fitting structure 1 may only be rotated after combining the receiving member 2 and the fitting member 3 . Therefore, the structural members may be connected one after another by the fitting structure 1 in order to obtain the required size.

Further, when the fitting structure 1 is released, the first structural member 28 and the second structural member 38 are separated. When it is desired to release the connected state, the locking portions (receiving member locking portion 24 and fitting member locking portion 34) are unlocked, and then the fitting structure 1 is rotated in the release direction to release. Just If the structural members are separated, it is possible to reduce the size of the structure or housing that uses the structural members as elements, or to dismantle them. This can also be done easily because it is only necessary to release the engagement of the engagement structure 1 .

For example, when a box-shaped housing is composed of a plurality of structural members, a width corresponding to the length of the two structural members can be achieved by connecting the two structural members with one fitting structure 1 . When connecting three structural members with two fitting structures 1, a width of three structural member lengths can be realized.

FIG. 8 is a side view showing part of the structure according to Embodiment 2 of the present invention.

The structure 100 has a fitting structure 1 . This fitting structure 1 is the one described in the first embodiment. The fitting structure 1 comprises a receiving member 2 and a fitting member 3 . Also, the receiving member 2 is connected to the first structural member 28 and the fitting member 3 is connected to the second structural member 38 . Since the receiving member 2 and the fitting member 3 of the fitting structure 1 are in a fitted state, the first structural member 28 and the second structural member 38 are connected.

This connection allows the first structural member 28 and the second structural member 38 to form part of the structure 100 . The first structural member 28 and the second structural member 38 of FIG. 8 have a complex shape. Even structural members having such a complicated shape can be connected by the fitting structure 1, so that various forms of the structural body 100 can be realized. Also, the first structural member 28 and the second structural member 38 can be separated by releasing the fitting structure 1 .

The second structural member 38 is also provided with the receiving member 2 . Thus, the third structural member comprising the fitting 3 is additionally connectable to the second structural member 38 . In this manner, the width and size of structure 100 can be varied.

FIG. 9 is a side view of a structure according to Embodiment 2 of the present invention. FIG. 9 shows a state in which a large number of structural members are connected using more fitting structures 1 than in FIG. The structure 100 in FIG. 9 is, for example, part of a box.

The fitting structure 1A connects the first structural member 28 and the second structural member 38 together. The fitting structure 1B connects the second structural member 38 and the third structural member 48 together. The fitting structure 1C connects the third structural member 48 and the fourth structural member 58 together. The fitting structure 1D connects the fourth structural member 58 and the fifth structural member 68 together.

It is also possible to connect multiple structural members by means of these multiple fitting structures 1 . A larger structure 100 can be easily realized by connecting this many structural members.

For example, when the structure 100 shown in FIGS. 8 and 9 is one side of a box, the width of the connection of the structural members shown in FIG. 8 and the connection of the structural members shown in FIG. different. Therefore, it is easy to change the width of the box according to the number of fitting structures 1 and the number of connected structural members.

By connecting a plurality of structural members with such a fitting structure 1, a structure 100 having a desired size (length and width) can be realized. In particular, since no special work or screwing is required, the change in size can be easily realized in the manufacturing process of the structure 100 or at the site where the structure 100 is used. can.

It is also possible to realize a box as shown in FIG. 10 by connecting structural members by such fitting structure 1 .

FIG. 10 is a perspective view of a frame realized by a fitting structure according to Embodiment 2 of the present invention. The width of the frame 500 is achieved by connecting structural members. At one side of the frame 500, the structural member 28, the structural member 38, and the structural member 48 are connected. These are connected by a fitting structure 1A and a fitting structure 1B, respectively. The fitting of the fitting structures 1A and 1B is as described in the first embodiment.

Thus, even with the frame body 500 , the width can be adjusted by connecting a plurality of structural members with the fitting structure 1 . If the fitting structure 1 and structural members are increased, the width of the side where the frame body 500 is located can be increased, and vice versa. In this manner, the fitting structure 1 can flexibly change the size of a structure such as the frame body 500 .

The fitting structure 1 described in Embodiments 1 and 2 can also be grasped as a fitting member, and the contents are the same.

The fitting member comprises a receiving member 2 and a fitting member 3 . The fitting is realized by fitting the receiving member 2 and the fitting member 3, and the fitting is released by removing them. The receiving member 2 and the fitting member 3 are separate members, and may be separated physically as shown in FIG. Any mode may be adopted as long as the receiving member 2 and the fitting member 3 can be combined and disengaged so as to realize fitting and releasing.

The receiving member 2 includes a receiving member inner peripheral portion 25 and a receiving member outer peripheral portion 26 . The receiving member inner peripheral portion 25 and the receiving member outer peripheral portion 26 are part of the receiving member 2 . The receiving member inner peripheral portion 25 includes a receiving member first convex portion 21 , a receiving member second convex portion 22 , and a receiving member third convex portion 23 . The receiving member outer peripheral portion 26 includes the receiving member locking portion 24 .

In addition, as shown in FIG. 1, the receiving member 2 has an inner circumferential portion 25 of the receiving member that has a part of curved line like an arc. , and also has a portion of an arc-like curve. Of course, it is part of a curve, such as an arc, and does not have to have a complete arc or curve.

The fitting member 3 comprises a fitting member inner peripheral portion 35 and a fitting member outer peripheral portion 36 . The fitting member inner peripheral portion 35 has a portion of a curved line such as an arc. A fitting member outer periphery 36 extends outside this fitting member inner periphery 35 . The fitting member inner peripheral portion 35 and the fitting member outer peripheral portion 36 are part of the fitting member 3 .

The fitting member inner peripheral portion 35 includes a fitting member first protrusion 31 , a fitting member second protrusion 32 , and a fitting member third protrusion 33 . The fitting member outer peripheral portion 36 includes a fitting member locking portion 34 . These are structures corresponding to the receiving member 2 . Although the detailed shape and the like are different, the fitting structure 1 is realized by combining the receiving member 2 and the fitting member 3. Therefore, each element provided in the receiving member 2 and each element provided in the fitting member 3 are: have a correspondence relationship.

That is, they have the following correspondence relationships.

The receiving member first convex portion 21 and the fitting member first convex portion 31 have a contact correspondence relationship.
The receiving member second convex portion 22 and the fitting member second convex portion 32 have a contact correspondence relationship.
The receiving member third convex portion 23 and the fitting member third convex portion 33 have a contact correspondence relationship.
The receiving member locking portion 24 and the fitting member locking portion 34 have a locking correspondence relationship.

The contact correspondence relationship is a relationship in which the receiving member 2 and the fitting member 3 are brought into contact with each other and crimped (fitted together) when the receiving member 2 and the fitting member 3 are combined to achieve fitting. The locking correspondence relationship is a relationship that realizes mutual locking when the receiving member 2 and the fitting member 3 are combined to realize fitting.

In other words, in the contact correspondence relationship, the fixing and holding are performed by contact. Locking and holding are performed by locking in the locking correspondence relationship.

In this manner, when the receiving member 2 and the fitting member 3 are combined and rotated, the fitting members are brought into a fitted state.

The fitting structure and fitting member described in Embodiments 1 and 2 are examples for explaining the gist of the present invention, and include modifications and alterations within the scope of the gist of the present invention.

1 fitting structure 2 receiving member 21 receiving member first convex portion 22 receiving member second convex portion 23 receiving member third convex portion 24 receiving member locking portion 25 receiving member inner peripheral portion 26 receiving member outer peripheral portion 28 first structural member 3 Fitting member 31 Fitting member first convex portion 32 Fitting member second convex portion 33 Fitting member third convex portion 34 Fitting member locking portion 35 Fitting member inner peripheral portion 36 Fitting member outer peripheral portion 38 Second structural member 100 Structure 110 Structural member 120 Structural member 101 Convex portion 102 Concave portion 200 Gap 500 Frame

Claims (12)

A fitting structure for connecting structural members,
a receiving member;
a fitting member;
a receiving member inner peripheral portion of the receiving member;
a receiving member outer peripheral portion of the receiving member;
a fitting member inner peripheral portion of the fitting member;
a fitting member outer peripheral portion of the fitting member;
a receiving member first convex portion, a receiving member second convex portion, and a receiving member third convex portion included in the inner peripheral portion of the receiving member;
a receiving member locking portion included in the outer peripheral portion of the receiving member;
a fitting member first protrusion, a fitting member second protrusion, and a fitting member third protrusion included in the inner peripheral portion of the fitting member;
a fitting member locking portion included in the outer peripheral portion of the fitting member;
The receiving member first convex portion and the fitting member first convex portion have a contact correspondence relationship,
The receiving member second convex portion and the fitting member second convex portion have a contact correspondence relationship,
The receiving member third convex portion and the fitting member third convex portion have a contact correspondence relationship,
the receiving member locking portion and the fitting member locking portion have a locking correspondence relationship,
Fixed and held by contacting in the contact correspondence relationship,
A fitting structure in which locking and holding is performed by locking in the locking correspondence relationship. When the inner periphery of the receiving member is inserted into the inner periphery of the fitting member and the fitting member is rotated in the fitting direction with respect to the receiving member,
the receiving member first convex portion and the fitting member first convex portion are crimped;
the receiving member second convex portion and the fitting member second convex portion are crimped;
the receiving member third convex portion and the fitting member third convex portion are crimped;
The fitting structure according to claim 1. the receiving member first convex portion and the fitting member first convex portion are crimped;
the receiving member second convex portion and the fitting member second convex portion are crimped;
3. The fitting structure according to claim 2, wherein said receiving member and said fitting member are fitted together by caulking said receiving member third projection and said fitting member third projection. the receiving member first convex portion and the fitting member first convex portion are crimped;
the receiving member second convex portion and the fitting member second convex portion are crimped;
When the receiving member third convex portion and the fitting member third convex portion are crimped,
4. The fitting structure according to claim 3, wherein said receiving member locking portion and said fitting member locking portion are crimped to maintain a fitted state between said receiving member and said fitting member. When the turning pressure in the fitting direction is excessive than the turning pressure required for locking and holding,
crimping between the receiving member first convex portion and the fitting member first convex portion is strengthened;
crimping between the receiving member second convex portion and the fitting member second convex portion is strengthened,
5. The fitting structure according to any one of claims 2 to 4, wherein caulking between said receiving member third projection and said fitting member third projection is strengthened. When the fitting member is rotated with respect to the receiving member in the releasing direction opposite to the fitting direction,
The caulking between the receiving member first convex portion and the fitting member first convex portion is released,
The caulking between the receiving member second convex portion and the fitting member second convex portion is disengaged,
6. The fitting structure according to any one of claims 2 to 5, wherein the caulking of said receiving member third protrusion and said fitting member third protrusion is released to release the fitted state. 7. The fitting member according to claim 6, wherein when the receiving member locking portion and the fitting member locking portion are released from the locked state, the fitting member is rotatable in the release direction with respect to the receiving member. Mating structure. the receiving member is connected to the first structural member and the fitting member is connected to the second structural member;
8. The fitting structure according to claim 1, wherein said first structural member and said second structural member are connected by fitting said receiving member and said fitting member. 9. The fitting structure according to claim 8, wherein said first structural member and said second structural member are separated by releasing the fitting between said receiving member and said fitting member. A fitting member for connecting structural members,
a receiving member;
a fitting member;
a receiving member inner peripheral portion of the receiving member;
a receiving member outer peripheral portion of the receiving member;
a fitting member inner peripheral portion of the fitting member;
a fitting member outer peripheral portion of the fitting member;
a receiving member first convex portion, a receiving member second convex portion, and a receiving member third convex portion included in the inner peripheral portion of the receiving member;
a receiving member locking portion included in the outer peripheral portion of the receiving member;
a fitting member first protrusion, a fitting member second protrusion, and a fitting member third protrusion included in the inner peripheral portion of the fitting member;
a fitting member locking portion included in the outer peripheral portion of the fitting member;
The receiving member first convex portion and the fitting member first convex portion have a contact correspondence relationship,
The receiving member second convex portion and the fitting member second convex portion have a contact correspondence relationship,
The receiving member third convex portion and the fitting member third convex portion have a contact correspondence relationship,
the receiving member locking portion and the fitting member locking portion have a locking correspondence relationship,
Fixed and held by contacting in the contact correspondence relationship,
A fitting member that is locked and held by being locked in the locking correspondence relationship. When the inner periphery of the receiving member is inserted into the inner periphery of the fitting member and the fitting member is rotated in the fitting direction with respect to the receiving member,
the receiving member first convex portion and the fitting member first convex portion are crimped;
the receiving member second convex portion and the fitting member second convex portion are crimped;
the receiving member third convex portion and the fitting member third convex portion are crimped;
11. The fitting of claim 10. the receiving member first convex portion and the fitting member first convex portion are crimped;
the receiving member second convex portion and the fitting member second convex portion are crimped;
12. The fitting member according to claim 11, wherein said receiving member and said fitting member are fitted together by crimping said receiving member third projection and said fitting member third projection.

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