JP7422382B2 - fitting - Google Patents

Description

The present invention relates to a joint for joining two objects to be joined.

Conventionally, in order to join a plurality of segments to form a segment ring, a joint is provided between the segments. Examples of such joints include those consisting of a female joint and a male joint, where one segment is provided with a female joint and the other segment is provided with a male joint, and when the segment is moved in the direction of the joint surface, the female joint A joint has been proposed in which the claws of the female joint are expanded outward by the male joint, and the claws of the female joint fit into the engagement windows of the male joint (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2015-137525

In the joint described in Patent Document 1 mentioned above, the size of the claw of the female joint and the position of the engagement window of the male joint are determined according to the bonding strength between the segments. Specifically, the length of the claw along the joining direction of the segments is increased, and the length from the tip of the male joint to the engagement window is set to be increased. As a result, there is a problem that the length of the male joint and the female joint along the joining direction becomes longer, the whole joint becomes larger, and the manufacturing cost increases.

The present invention was accomplished through intensive research by the inventors in view of the above problems, and an object of the present invention is to provide a joint that has a simple structure, has high strength, and can be miniaturized.

The joint of the present invention is a joint configured such that a first joint member and a second joint member can be joined to each other by relatively sliding movement, and the first joint member has an outer circumferential surface. The second joint member has a recessed fitting protrusion formed by a plurality of first strips arranged in a row, and the second joint member has a receiving part recessed with respect to the end face. A concavo-convex shape comprising an insertion port formed on orthogonal surfaces and a plurality of second stripes extending from the insertion port along the sliding direction and formed in the inner circumferential surface of the receiving portion. The receiving part has a guide regulating part that guides the movement of the fitting protrusion along the sliding direction by fitting the concavities and convexities of the fitting protrusion into each other, and guides the movement of the fitting protrusion in a direction different from the sliding direction. The first striped portion and the second striped portion interfere with each other to restrict relative displacement of the fitting protrusion in a direction different from the sliding direction.

Furthermore, the joint of the present invention is characterized in that the receiving portion has two opposing surfaces parallel to the sliding direction, and the second striped portion is formed on one or both of the two surfaces.

Furthermore, the joint of the present invention is characterized in that at least one of the two surfaces of the receiving portion has an inclined portion with respect to the other so that the gap can be widened or narrowed from the opening of the receiving portion toward the bottom. shall be.

Furthermore, the joint of the present invention is characterized in that the receiving portion has a portion in which the distance between the two surfaces decreases along the direction of the slide.

Further, in the joint of the present invention, the thickness of at least one of the two surfaces of the receiving portion and/or the fitting protrusion is greater at the front end of the fitting protrusion in the insertion direction in the sliding direction relative to the insertion opening. It is characterized by being thin.

Furthermore, the joint of the present invention is characterized in that the unevenness of the guide regulating portion is formed at an equal pitch or different pitches, and the unevenness of the fitting protrusion is formed at an equal pitch or different pitches.

Further, the joint of the present invention is characterized in that the unevenness of the guide regulating portion and the unevenness of the fitting protrusion have a cross-sectional shape of any one of a mountain shape, a wave shape, a minute unevenness shape, and a sawtooth shape.

Further, the joint of the present invention is characterized in that the receiving portion is constituted by a plurality of separate parts.

Furthermore, the joint of the present invention is characterized in that the partial body forms a fitting protrusion.

Further, the joint of the present invention is characterized in that the receiving portion is composed of a plurality of fitting protrusions.

Furthermore, the joint of the present invention is characterized in that the receiving portion is formed by integrating a plurality of partial bodies by gluing, welding, welding, fitting, and/or fastening.

Furthermore, the joint of the present invention is characterized in that the surface of the partial body that becomes the mating surface with the other partial body has a flat shape, a slightly uneven surface shape, and/or an uneven surface shape that can be fitted to each other.

Further, in the joint of the present invention, the first joint member has a receiving part, the second joint member has a fitting protrusion, and the fitting protrusion of the second joint member is provided in the receiving part of the first joint member. The fitting protrusion of the first coupling member fits into the receiving portion of the second coupling member.

Moreover, the joint of the present invention is characterized in that the first joint member and the second joint member have anchor portions.

Furthermore, the joint of the present invention is characterized in that the partial body has a fitting groove into which at least a portion of the anchor is fitted, and the plurality of partial bodies sandwich the anchor.

Furthermore, the joint of the present invention is characterized in that the receiving portion includes a reinforcing portion on the outside.

According to the present invention, the simple structure allows the entire area of the mutually interfering portion between the first joint member and the second joint member to contribute to the shearing area that resists pull-out, and has high strength. A joint that can be made smaller can be provided.

FIG. 1 is a perspective view showing a joint according to a first embodiment of the present invention. It is a figure explaining application to a shield of a joint. It is a perspective view showing a female joint member of a joint concerning a first embodiment. It is a perspective view showing a male joint member of a joint concerning a first embodiment. FIG. 6 shows a male coupling member sliding relative to a female coupling member. It is a perspective view showing a joint member of a joint concerning a second embodiment. FIG. 7 is a sectional view showing a state in which a joint member of a joint according to a second embodiment is embedded in a segment. FIG. 7 is a perspective view showing a combination of joint members according to a second embodiment. It is a perspective view showing a joint constituted by combining joint members concerning a second embodiment. It is a figure which shows the female joint member comprised by several partial bodies. It is a figure which shows the female joint member comprised by several partial bodies. It is a figure which shows the joint member comprised from three partial bodies. It is a figure which shows the joint member comprised from three partial bodies. It is a figure which shows the female joint member which consists of the same partial body. FIG. 7 is a diagram showing another example of a partial body. FIG. 3 shows a female coupling member with an anchor. FIG. 3 shows a male coupling member with an anchor. FIG. 7 shows another female coupling member with an anchor; It is a figure which shows another female joint member. It is a figure which shows another female joint member. It is a figure which shows the female joint member embedded in the segment. It is a figure which shows the male joint member embedded in the segment. It is a figure which shows the other female joint member comprised by several partial bodies. FIG. 3 shows a partial body formed from an anchor. FIG. 3 shows a female coupling member consisting of an integral part with an anchor; It is a figure which shows the other example of the partial body formed from an anchor. It is a figure which shows the other example of the female joint member which consists of an anchor and a partial body. FIG. 3 shows a male coupling member formed from an anchor. It is a figure which shows the example of arrangement|positioning of the plate part of a female joint member. It is a figure which shows the other example of the guide restriction part of a female joint member. It is a figure which shows the example of a shape of a fitting protrusion part and a receiving part. It is a figure which shows the example of a shape of a fitting protrusion part and a receiving part. It is a figure which shows the other example of the striped part of a female joint member. It is a figure which shows the example of the shape of the unevenness|corrugation of a guide regulation part. FIG. 3 shows a female coupling member with a reinforcement. It is a figure showing a female type joint member and a male type joint member concerning a conventional joint. It is a figure showing an anchor arrangement groove.

A joint according to a first embodiment of the present invention will be described below. FIG. 1 is a perspective view showing a joint 1 according to a first embodiment. The joint 1 has two joint members, a female joint member 2 and a male joint member 4, and the female joint member 2 and the male joint member 4 relatively slide and engage with each other. It is configured to be able to be joined. Therefore, each of the joint members 2 and 4 constitutes a joint for joining, for example, a concrete segment (object to be joined) in a state where the joining surface and the joining surface of another segment are brought into contact with each other.

Note that the joint 1 can be applied to a shield construction method for constructing an underground tunnel as shown in FIG. In the shield construction method, a ring 104 is manufactured by joining segments 102 that have been previously manufactured in a factory or the like in the circumferential direction, and the tunnel 100 is constructed by sequentially connecting the rings 104 in the axial direction. The invention can be applied to a circumferential joint 1 of segments, symbolically indicated by short straight lines in FIG.

In the following description, an XYZ orthogonal coordinate system shown in FIG. 1 is set, and the positional relationships of each member will be explained with reference to this orthogonal coordinate system. The X-axis is set to be parallel to the sliding direction for engaging both the joint members 2 and 4. The Z axis is set to be parallel to the direction in which both the joint members 2 and 4 engage with each other and face each other. The Y axis is set perpendicular to the XZ plane. Further, the sliding direction when the male joint member 4 is engaged with the female joint member 2 is set to the +X direction, and the direction in which the male joint member 4 is removed from the female joint member 2 is set to the −X direction. Further, on the Z axis, the female joint member 2 side is set in the -Z direction, and the male joint member 4 side is set in the +Z direction. Further, the Y axis is set such that the direction from the female joint member 2 side to the male joint member 4 side is the +Y direction.

FIG. 3 is a perspective view showing the female joint member 2 of the joint 1 according to the first embodiment. The female joint member 2 is symmetrical about the XZ plane and has a substantially U-shaped cross-sectional shape parallel to the YZ plane. The female joint member 2 includes a receiving portion 10 that is recessed with respect to the end face in the +Z direction and is capable of receiving a portion of the male joint member 4 . That is, the receiving portion 10 of the female joint member 2 is composed of two plate portions 12 and a connecting portion 14 that connects the two plate portions 12 on the −Z direction side. Further, the receiving portion 10 is open at both ends in the X direction, and this opening functions as an insertion port 10a through which the fitting protrusion 20 can be inserted into the inner circumferential surface of the receiving portion 10.

The plate portions 12 are disposed with their plate surfaces substantially parallel to the XZ plane, and two plates are arranged with an interval in the Y direction. The plate part 12 has an uneven guide regulating part 13 formed of a plurality of striped parts 13a arranged in a row on the opposing surface facing the other plate part 12. The unevenness of the guide regulating portion 13 is assumed to have a mountain shape, for example, but is not limited to this, of course.

Each strip portion 13a extends along the sliding direction (X direction) and is arranged along the Z direction from the edge of the plate portion 12 on the +Z direction side. Note that the striped portion 13a may be disposed at least over substantially the entire area of the plate portion 12 in the X direction. Therefore, the striped portion 13a may have a shape that extends continuously over substantially the entire area in the X direction, or a plurality of striped portions 13a may be disposed intermittently in a row along the X direction. . Note that the length and number of the striped portions 13a, the gaps between the striped portions 13a, etc. can be set as appropriate.

FIG. 4 is a perspective view showing the male joint member 4 of the joint 1 according to the first embodiment. The male joint member 4 is a member formed in a substantially plate shape, and is provided with a fitting protrusion 20 at the -Z direction side end. The length of the insertion protrusion 20 in the Z direction is approximately the same as the depth (length in the Z direction) of the receiving portion 10, and the thickness in the Y direction is approximately equal to or equal to the gap between the two plate portions 12. It is set slightly smaller than the gap. Further, on both sides of the fitting protrusion 20 in the Y direction, an uneven fitting surface 20a is formed in which a plurality of strips 21 are arranged in a row. The pitch and number of the unevenness, the gap (clearance) between the unevenness of the guide regulating part 13, and the like are set so that the unevenness of the fitting surface 20a fits into the unevenness of the guide regulating part 13. That is, the shape of the fitting protrusion 20 is substantially the same as the space formed by the receiving part 10, and the fitting protruding part 20 can be completely accommodated in the receiving part 10.

FIG. 5 shows the male coupling member 4 sliding relative to the female coupling member 2. As shown in FIG. As shown in FIG. 5, the male joint member 4 is moved in the insertion direction in the sliding direction with respect to the female joint member 2, so that the fitting protrusion 20 fits into the receiving part 10 through the insertion opening 10a. . That is, the fitting protrusion 20 is moved in the +X direction with respect to the receiving part 10 and is fitted into the receiving part 10. Note that the female joint member 2 may be moved in the insertion direction in the sliding direction with respect to the male joint member 4. In this case, the receiving part 10 is moved in the −X direction with respect to the insertion protrusion 20.

At this time, the unevenness of the fitting surface 20a fits into the unevenness of the guide regulating portion 13. That is, the convex portion of the fitting surface 20a fits into the concave portion of the guide regulating portion 13, and the convex portion of the guide regulating portion 13 fits into the concave portion of the fitting surface 20a. Therefore, the movement of the male joint member 4 is guided by the guide restriction portion 13 so that it can slide along the X direction.

In addition, in the fitting protrusion 20, the unevenness of the fitting surface 20a fits into the unevenness of the guide regulating part 13. Therefore, the striped portion 13a of the female joint member 2 and the striped portion 21 of the male joint member 4 interfere in a direction different from the sliding direction (Z direction), and the fitting protrusion 20 with respect to the receiving portion 10 interferes with the striped portion 21 in the Z direction. relative displacement is regulated. Of course, since the fitting protrusion 20 is arranged between the plate parts 12, its position along the Y direction is also restricted. As a result, as shown in FIG. 1, the male joint member 4 and the female joint member 2 are combined to form a joint 1 such that the fitting protrusion 20 is accommodated within the receiving portion 10.

As described above, according to the joint 1 according to the present embodiment, when the fitting protrusion 20 of the male joint member 4 is fitted into the receiving part 10 of the female joint member 2, the unevenness of the guide regulating part 13 The projections and recesses of the fitting surface 20a fit together to prevent the female joint member 2 and the male joint member 4 from separating in the Z direction.

In addition, the joint members 2 and 4 of the joint 1 according to the present embodiment are different from the joint described in Patent Document 1 in which a claw fits into the engagement window, in terms of the size of the claw and the size of the engagement window. No design is required to secure the position. Therefore, while maintaining strength, it is possible to omit the conventional configuration of claws and engagement windows, which allows both joint members to be made smaller and lighter, and the joint 1 itself can be manufactured at a lower cost. can.

Furthermore, in the joint 1 according to the present embodiment, since the plurality of projections and depressions of the guide regulating portion 13 and the plurality of projections and depressions of the engagement surface 20a fit into each other, both the joint members 2 and 4 are separated along the Z direction. In order to distribute the stress corresponding to the tensile load applied in multiple stages, by increasing the number of depressions and depressions, it is possible to set the depth of each depression and depression to be short. Therefore, while maintaining the strength, the length of the unevenness along the depth direction (Y direction) can be shortened, and thereby both the joint members 2 and 4 can be made smaller.

Furthermore, mutual interference in the Z direction on the XZ plane at the uneven portions where the joint members 2 and 4 engage with each other is caused by shearing force generated by an external force in a direction that separates the joint members 2 and 4 apart along the Z direction. Contributes to the resisting shear area. That is, all the arbitrary XZ cross-sectional areas of the parts of both the joint members 2 and 4 that engage and interfere with each other become shearing areas and provide shear resistance.

Here, FIG. 36 shows a joint 300 consisting of a conventional female joint member 310 and a male joint member 320. The conventional male joint member 320 has a T-shaped YZ cross-sectional shape and has a flange-like protrusion 322 that spreads on both sides in the Y direction. The female coupling member 310 also has a receiving portion 312 that is recessed in the Z direction and has a protrusion 316 at an open end opposite the bottom 314 of the recess that narrows the opening of the recess. In such a joint 300, when the protrusion 322 is inserted into the receiving portion 312, the protrusion 322 engages with the protrusion 316.

At this time, the thickness of the protrusion 316 and the protrusion 322 is set in accordance with the load capacity. For example, when the thickness according to the load capacity is a, it is necessary to set the thickness of each of the protrusion 316 and the protrusion 322 to a or more. Therefore, the conventional joint 300 needs to have a thickness of 2a or more in the Z direction at the portion where the female joint member 310 and the male joint member 320 engage. On the other hand, in the joint 1 of the present invention, both the joint members 2 and 4 engage with each other due to the interference between the striped portion 13a on the inner circumferential surface of the receiving portion 10 and the striped portion 21 of the fitting protrusion 20. While maintaining the pull-out strength, it is possible to set the thickness of the engaging portion in the Z direction to less than half of the conventional thickness. As a result, both the joint members 2 and 4 can be made smaller and lighter, and the joint 1 itself can be manufactured at a lower cost.

Although the female joint member 2 described above has been described as having the guide regulating portion 13 on each of the two plate portions 12, the guide regulating portion 13 may be provided on only one of them. In that case, the fitting surface 20a is provided only on the surface of the fitting protrusion 20 that faces the unevenness of the guide regulating section 13.

Next, a joint 1 according to a second embodiment will be described. The joint 1 according to the second embodiment constitutes a joint by combining the female joint member 2 and the male joint member 4 according to the first embodiment with joint members 30 that serve as male and female joints. The points are different. Note that the same components as those of the joint 1 according to the first embodiment are given the same reference numerals, and the description thereof will be omitted.

Here, FIG. 6 is a perspective view showing a joint member of a joint according to the second embodiment, and FIG. 7 is a sectional view showing a state in which the joint member of a joint according to the second embodiment is embedded in a segment. The male-female integral type joint member 30 is combined with another joint member having the same structure, and is joined with the joint surface 108 of the segment (see FIG. 7) and the joint surface of the other segment in contact with each other. This constitutes a joint.

The joint member 30 connects the fitting protrusion 20 protruding from the joint surface 108 of the segment 102 and the receiving part 32 buried in the segment 102, and is buried in the segment 102. A connecting portion 34 is provided. Moreover, the receiving part 32 is disposed on the upstream side of the fitting protrusion 20 in the sliding direction when assembling other joint members. That is, the receiving portion 32 is disposed closer to the -X direction than the insertion protrusion 20 in FIG.

The entire fitting protrusion 20 protrudes from the joint surface 108 . That is, the joint surface 108 serves as a boundary between the fitting protrusion 20 and the connecting portion 34. The receiving portion 32 is buried in the segment 102 so that the end surface on the +Z direction side shown in FIG. 6 is exposed and the end surface and the joining surface 108 are flush with each other. Further, the receiving portion 32 includes two side walls 36 that are arranged substantially in parallel, and a connecting portion 38 that connects the base ends of the both side walls 36 to each other. The end of the receiving portion 32 on the −X direction side in FIG. 6 is an insertion opening 32a that is open so that the fitting protrusion 20 can be inserted thereinto. In addition, a space defined by the two side walls 36, the continuous portion 38, the insertion port, and the end surface 40 (see FIG. 7) facing the insertion port 32a in the X direction is a space in which other joint members inserted from the insertion port 32a can fit. This becomes a receiving space with a concave cross section that receives the protrusion.

The length of the receiving space in the Z direction is approximately the same as the length of the insertion protrusion 20 in the Z direction. The two side walls 36 have uneven guide regulating portions 37 in which a plurality of striped portions 37a are arranged in a row on opposing surfaces facing each other. Incidentally, the unevenness of the guide regulating portion 37 is assumed to form a mountain shape. Further, the striped portions 37a are formed in the X direction, and each striped portion 37a is arranged along the Z direction from the edge on the +Z direction side. The pitch, number, clearance, etc. of the unevenness of the guide regulating portion 37 are set such that each of the unevenness extends in the X direction and fits into the unevenness of the fitting surface 20a. Therefore, the fitting protrusion 20 can fit between the side walls 36, and the unevenness of the fitting surface 20a of the fitting protrusion 20 can fit into the unevenness of the guide regulating part 37. Further, the receiving space of the receiving part 32 and the shape of the fitting protrusion 20 are substantially the same, and the receiving part 32 can completely accommodate the fitting protruding part 20.

When the fitting protrusion of another joint member is inserted into the receiving space of the receiving part 32, a tensile force along the surface direction of the joint surface (force in the direction of separating the segments 102 from each other along the Z direction) is applied. At this time, the unevenness of the guide regulating portion 37 fits into the unevenness of the fitting surface 20a, so that the receiving portion 32 functions to be able to hold the fitting protrusion of the other joint member.

The side wall 36 may be made thicker in order to improve its strength, but the strength may be increased by other methods, for example by providing reinforcing means such as ribs or flanges on the outside of the side wall 36. You can.

The connecting portion 34 is a substantially rectangular parallelepiped-shaped member, and is embedded in the segment 102, but is of course not limited to this. The receiving portion 32 is connected to the end surface 34a of the connecting portion 34 in the −X direction, and the fitting protrusion 20 is connected to the end surface 34b of the connecting portion 34 in the −Z direction. Although the shape of the connecting portion 34 is made into a substantially rectangular parallelepiped shape for ease of manufacturing, the fitting protrusion 20 and the receiving portion 32 are connected in the positional relationship as described above, and when joining, it is possible to Other shapes may be used as long as they can withstand the load when pressed by the fitting protrusion.

Next, a method of combining the male and female integrated joint members 30 will be described with reference to FIG. 8. In FIG. 8, only the joint member 30 is shown, and when this joint member 30 is embedded in a segment, a fitting protrusion of another joint member is placed in a position adjacent to the receiving portion 32 of the segment. A space 110 (see FIG. 7) for entering 32 is formed. That is, the space 110 is formed at a position continuous with the receiving space of the receiving part 32, and has a shape that allows the fitting protrusion to be inserted and removed by opening the joint surface 108 side.

When combining the joint members 30, as shown in FIG. 8, one joint member 30a and the other joint member 30b are aligned along the The orientation is rotated 180 degrees. That is, the joint member 30b is oriented such that the fitting protrusion 20 extends in the -Z direction and the receiving part 32 is located on the +X direction side with respect to the fitting protrusion 20.

Next, the joint member 30b is moved along the +X direction shown in FIG. Note that when the joint member 30 is embedded in a segment, the joint member 30b is aligned in the Z direction with respect to the joint member 30a so that the joint surfaces of both segments are in sliding contact with each other. As a result, the fitting protrusion 20 of the coupling member 30a enters the receiving part 32 of the coupling member 30b, and the fitting protrusion 20 of the coupling member 30b enters the receiving part 32 of the coupling member 30a.

By further moving the joint member 30b in the +X direction, the fitting protrusion 20 of the joint member 30b is accommodated in the receiving portion 32 of the joint member 30a, as shown in FIG. Similarly, the fitting protrusion 20 of the joint member 30a is accommodated in the receiving portion 32 of the joint member 30b. Therefore, the receiving portion 32 and the fitting protrusion 20 engage with each other, and function to prevent separation of the joint members 30a, 30b. In this way, the joint member 30a is combined with another joint member 30b to form the joint 1.

According to the joint member 30, the receiving part 32 allows the insertion protrusion of another joint member to be inserted, accommodates the insertion protrusion of the inserted other joint member, and the insertion part 32 slides with respect to the receiving part 32. It can be held so that it does not slip out in the direction perpendicular to the direction. Moreover, the fitting protrusion 20 of the joint member 30 is inserted into the receiving part of another joint member and is held so as not to come out, thereby making it possible to constitute a stronger joint.

Note that each joint member of the joint according to each of the embodiments described above can be composed of a plurality of partial bodies. First, a case will be described in which the female joint member 2 is constituted by a plurality of parts formed separately from each other. Specifically, as shown in FIG. 10, the female joint member 2 is composed of two mutually separate partial bodies 44 and 46. The partial body 44 forms the -Y direction side half (left half) of the female joint member 2 shown in FIG. That is, the shape of the partial body 44 is set so that it has the plate portion 12a and the −Y direction side half of the connecting portion 14. On the other hand, the partial body 46 forms the +Y direction side half (right half) of the female joint member 2 shown in FIG. That is, the shape of the partial body 46 is set so that it has the plate portion 12b and the half of the connecting portion 14 on the +Y direction side.

Further, the partial body 44 includes a joint surface 44a that is a concave-convex surface in the shape of a mountain, and the partial body 46 similarly has a joint surface 46a that is a concavo-convex surface. The coupling surfaces 44a and 46a have concave and convex surfaces so that the concave and convex portions can fit into each other. Therefore, the connecting surfaces 44a, 46a of the partial bodies 44, 46 are fitted together to form the female joint member 2. Note that the partial bodies 44 and 46 are connected to each other by, for example, bolting. That is, in the partial bodies 44 and 46, for example, through holes (not shown) penetrating in the Y direction are formed at the connecting portions 14a and 14b. Then, by inserting bolts into both through holes and fastening nuts to the bolts, the partial bodies 44 and 46 are joined. Further, the partial bodies 44 and 46 are members having the same shape, and the partial body 26 has its direction reversed so that the joint surface 46a faces the joint surface 44a.

Note that the means for connecting the partial bodies 44 and 46 is not limited to bolt fastening, but the through holes of the partial bodies 44 and 46 may be tapped to provide female threaded holes, and bolts may be screwed into the through holes of the partial bodies 44 and 46. good. Alternatively, it may be fastened with rivets or caulked. In the case of joining by caulking, for example, a convex portion is formed in the partial body 44 and a concave portion is formed in the partial body 46, and the convex portion is fitted into the concave portion to plastically deform the convex portion, thereby joining the partial bodies 44 and 46. In addition, adhesive, welding, welding, fitting, etc. may be used as the means for connecting the partial bodies 44 and 46, and a plurality of the above-mentioned joining means may be combined.

Furthermore, the connecting surfaces 44a and 46a of the partial bodies 44 and 46 are not limited to the shape of a mountain-shaped uneven surface, but may be flat, or may have a saw blade shape, or the top and bottom surfaces of the uneven surface may be formed in the sliding direction. It may be a shape in which the surface connecting the tip end surface and the bottom surface is perpendicular to the sliding direction and parallel to the sliding direction, or a wavy shape in which the unevenness is a curved surface.

Further, the coupling surfaces 44a and 46a may have minute irregularities such as knurling, minute irregularities that can fit into each other, or a rough surface shape. If minute irregularities are adopted, the frictional force and/or the fitting force between the joining surfaces 44a and 46a will increase, so it is possible to prevent the joining surfaces 44a and 46a from sliding along the surface direction before fastening. I can do it.

Furthermore, by employing fitting-able unevenness, it is possible to prevent the respective joining surfaces 44a and 46a from sliding along the surface direction before fastening, and furthermore, the unevenness between the partial bodies 44 and 46 before fastening can be prevented. Fitting and positioning can be easily performed. Note that alignment may be performed by providing one or more recesses on the bonding surface 44a, providing one or more protrusions on the bonding surface 46a, and fitting the protrusions into the recesses.

In this way, since the female joint member 2 can be constructed from a plurality of partial bodies 44 and 46, the partial bodies 44 and 46 can be manufactured by press working or plastic working such as forging. Therefore, even if a coupling means for integrating the respective partial bodies 44 and 46 is provided, the female joint member 2 can be manufactured at a lower cost than if it were manufactured by integral molding such as casting. Furthermore, since each of the partial bodies 44 and 46 can be mass-produced, the female joint member 2 can be mass-produced easily. Furthermore, since the female joint member 2 manufactured by plastic working has improved strength compared to the case manufactured by casting, it is possible to reduce the overall size while maintaining the strength when manufactured by casting. Can be done. Further, although the female joint member 2 has been described as an example in which it is composed of a plurality of partial bodies 44 and 46, the male joint member 4 may of course be composed of a plurality of partial bodies.

Although the female joint member described above has been described as an example in which it is constructed from two partial bodies, the present invention is not limited to this, and may be constructed from three or more partial bodies. Further, a female joint member may be constructed by disposing a shear key or the like between the partial bodies. For example, when a female joint member is configured with three partial bodies, each partial body is configured so that the connecting portion 14 is divided into three in the Y direction. That is, as shown in FIG. 11(a), the partial body 50 has a shape that includes the plate part 12a and a part of the connecting part 14 in the -Y direction, and the partial body 52 has a shape that includes the plate part 12b and a part of the connecting part 14 in the +Y direction. The partial body 54 is the intermediate portion of the connecting portion 14 and has a shape including the bottom surface of the receiving portion 10 . Therefore, the partial bodies 50 and 52 are connected to each other so that the partial body 54 is sandwiched between them.

Further, when a shearing key is provided, a shearing key 56 is provided in a hole communicating with each other in the partial bodies 50, 52, and 54, as shown in FIG. 11(b). That is, the partial body 54 is formed with a through hole into which the shearing key 56 penetrating in the Y direction can be inserted. Each of the partial bodies 50 and 52 has a hole that can communicate with the through hole and into which a shear key 56 is fitted. Then, the shear key 56 is inserted and disposed in the through hole of the partial body 54 and the holes of the partial bodies 50 and 52. When the shearing key 56 is provided, the positioning of the partial bodies 50 and 52 can be easily performed by inserting the shearing key 56 into the through hole of the partial body 54 in advance when joining the partial bodies. .

Moreover, even if the joint member 30 is a male-female integral type, it can be constructed from a plurality of partial bodies. Here, FIG. 12 shows a joint member 30 composed of three partial bodies, (a) is a perspective view showing the joint member, (b) is a perspective view showing the partial body 60, and (c) is a partial body 64. FIG. Further, the respective coupling surfaces 62a and 64a of the partial bodies 62 and 64 are formed along the XZ plane. Further, the partial bodies 60, 62, and 64 are connected by bolts 68 and nuts (not shown). Therefore, each partial body 60, 62, 64 is formed with one or more bolt insertion holes.

As shown in FIG. 12(b), the partial body 60 has a plate shape including the fitting protrusion 20, and has a longer length in the direction orthogonal to the sliding direction than the fitting protrusion 20, and the partial body 62, The length in the Z direction is set so that it can be held between 64. That is, the partial body 60 includes a pinched portion that can be held between the partial bodies 62 and 64.
A plurality of strips that are the same as the fitting protrusion 20 are formed in the sandwiched portion of the partial body 60 .

As shown in FIG. 12(a), the partial body 62 has a substantially plate shape including the side wall 36a and the left half (the half on the −Y direction side) of the continuous portion 38. Further, the partial body 64 has a substantially plate shape including the side wall 36b and the right half (+Y direction side half) of the continuous portion 38.

Further, as shown in FIG. 12(c), the partial body 64 has an uneven surface 66 in which a plurality of stripes are arranged on a surface that is recessed in the Y direction from the coupling surface 64a. The stripes of the uneven surface 66 function as the striped portions 37a of the guide regulating portion 37. Furthermore, the uneven surface 66 functions as a concave surface that defines a space in which the partial body 60 is placed. Note that the partial body 62 has an uneven surface similar to the uneven surface 66 that is recessed in the Y direction than the coupling surface 62a.
Therefore, when constructing the joint member 30, the unevenness of the clamped portion 61 and the unevenness of each uneven surface of the partial bodies 62 and 64 are fitted, and the connecting surfaces 62a and 64a are connected to each other as shown in FIG. 12(a). The partial bodies 60, 62, and 64 are joined by overlapping them.

Note that the shapes of the partial bodies 60, 62, and 64 are not limited to those described above, and although the shapes have a bonding surface and an uneven surface, they are not limited thereto. For example, as shown in FIG. 13(b), the partial body 60 may have an L-shaped plate shape so as to include the fitting protrusion 20 and the bottom of the receiving portion 32. In this case, the partial body 60 is provided with a plurality of strips 21 over the entire surface thereof facing the partial body 62 or the partial body 64.

Further, it is assumed that the partial bodies 62 and 64 have a flat plate shape. That is, as shown in FIG. 13A, the partial body 62 has a substantially plate shape including a side wall 36a, and the partial body 64 has a substantially plate shape including a side wall 36b. Further, it is assumed that the partial bodies 62 and 64 are provided with a plurality of striped portions over the entire surface thereof facing the partial body 60. That is, as shown in FIG. 13(c), the partial body 64 is provided with a plurality of striped portions 37a over the entire surface thereof facing the partial bodies 60, 62. Note that in the partial body 62 as well, a plurality of striped portions 37a are provided similarly to the partial body 64. When the joint member 30 is constituted by such partial bodies 60, 62, 64, the fitting surface 20a of the partial bodies 60 and the guide regulating portion 37 of the partial bodies 62, 64 are fitted, and the partial bodies 60, 62 , 64 are combined.

As explained above, the male-female integrated joint member 30 can be constructed from a plurality of partial bodies. Since the joint member 30 has a receiving space for the receiving part 32, it cannot be manufactured by a method other than integral molding, for example, by forging. can be made into a forgeable shape. Therefore, if the partial body is manufactured by plastic working such as forging or press working, the joint member 30 can be mass-produced at low cost. Furthermore, since the joint member 30 is manufactured from a partial body manufactured by plastic working, the strength can be improved compared to a cast member. Therefore, it is possible to reduce the size of the joint member 30 while maintaining the same strength as that of a cast member, and further, due to the size reduction, it is possible to reduce the weight and manufacturing cost of the joint member 30 itself.

Further, mutual interference in the Z direction on the XZ plane in the uneven portions where the joint members 30 engage with each other contributes to a shearing area that resists the shearing force generated by an external force in a direction that separates the joint members 30 from each other in the Z direction. That is, all arbitrary XZ cross-sectional areas of mutually engaging and interfering parts of the joint member 30 become shearing areas and provide shear resistance. Therefore, in the joint 1 made of the joint member 30, as with the joint 1 according to the first embodiment, the thickness in the Z direction of the engaging portion can be set to less than half that of the conventional joint. becomes. As a result, the joint member 30 can be made smaller and lighter, and the joint 1 itself can be manufactured at a lower cost.

Although the above-described partial bodies for constructing the female joint member 2 have different shapes, the female joint member 2 may be constructed by combining partial bodies having the same shape. For example, as shown in FIG. 14, the partial body 70 has a substantially T-shape having a reduced width portion 72 with a reduced thickness in the Y direction and an enlarged width portion 74 with an increased thickness in the Y direction.

The partial body 70 is formed so that a surface parallel to the XZ plane forms an uneven surface by arranging a plurality of strips 76 in a row. Further, the unevenness of the reduced width portion 72 is formed symmetrically on both end surfaces. That is, a portion that is a convex portion (concave portion) on one surface also becomes a convex portion (concave portion) on the opposite surface. On the other hand, in the widened portion 74, the unevenness is formed at different positions so that the unevenness is alternated on both sides. That is, a portion that is a convex portion (concave portion) on one surface becomes a concave portion (convex portion) on the opposite surface.

If such partial bodies 70 are placed adjacent to each other in the Y direction, the unevenness of the widened portion 74 will fit into each other, and the two reduced width portions 72 facing the +Z direction end surface of the widened portion 74 will form the receiving portion 10. The female joint member 2 can be configured as follows. Further, at this time, the gap between the two reduced width portions 72 may be set to be equal to the thickness of the reduced width portions 72 in the Y direction, and the partial body 70 may be used as the male joint member 4. That is, if the gap between the two reduced width parts 72 is set to a size that allows the reduced width part 72 of the partial body 70 to fit therein, the partial body 70 can be used as the male joint member 4. Therefore, as shown in FIG. 14(b), the female joint member 2 is constituted by two partial bodies 70 arranged in parallel in the Y direction. Further, the partial body 70 serving as the male type joint member 4 has the reduced width portion 72 oriented in the -Z direction with respect to the widened portion 74, and the reduced width portion 72 is oriented in the reduced width portion 70 of the partial body 70 forming the female type joint member 2. It is fitted between the width portions 72. Therefore, the reduced width portion 72 of the partial body 70 as the male joint member 4 functions as the insertion projection 20.
In this way, it is possible to configure the joint 1 with the three partial bodies 70, so in addition to the effect of configuring the female joint member 2 with the plurality of partial bodies described above, the partial bodies can also be combined with the male joint member. By making it usable as a member, the manufacturing cost of the joint can be reduced.

Note that when forming the female joint member 4 using the partial body 70, the convex portions of the widened portions 74 may come into contact with each other depending on the orientation of the partial body 70. Therefore, as shown in the partial body 80 shown in FIG. 15, the position of the striped portion 85 of the widened portion 84 is configured to be switched halfway in the X direction. That is, the position of the striped portion 85 from the midway portion to the end in the −X direction is different from the position of the striped portion 85 from the midway portion to the end in the +X direction. Therefore, in the widened portion 84, the unevenness is switched at the halfway point such that a convex portion along the +X direction from the halfway point forms a concave portion in the −X direction from the halfway point. is formed. In this way, regardless of the orientation of the partial bodies 80, the partial bodies 80 can fit into each other on any plane in the Y direction, thereby reliably forming the female joint member 2.

In addition, when the joint 1 according to each embodiment is applied to a segment, and the member to be joined is a member manufactured by solidifying a fluid such as a concrete member, the female joint member 2 and the male joint member 4 preferably includes an anchor. Of course, it goes without saying that the male-female joint member 30 may be provided with an anchor.

The anchor in this case may be integrated with the female joint member 2 and the male joint member 4, or may be separate. As the anchor, a deformed steel bar having an appropriate shape such as a straight line, a U-shape, an L-shape, or the like can be used.

The diameter and length of the anchor are set so that the relative position of the female joint member 2 or the male joint member 4 with respect to the member to be joined can be maintained. That is, the length and diameter of the anchor are set so as to withstand the expected axial load so that the female joint member 2 or the male joint member 4 will not separate from the members to be joined. When fixing the anchor, in addition to welding, the anchor may be fixed by providing a male thread at the end of the anchor and a female threaded hole in the female joint member 2 or the male joint member 4 and screwing them together.

Here, FIG. 16 is a diagram showing a female joint member 2 provided with an anchor, and FIG. 17 is a diagram showing a male joint member 4 provided with an anchor. As shown in FIG. 16, the anchor 90 included in the female joint member 2 is disposed in the receiving portion 10 so as to extend outward from the opposite end. Further, as shown in FIG. 17, the anchor 90 included in the male joint member 4 is arranged so as to extend outward from the end opposite to the insertion protrusion 20. Here, the anchor 90 is made of a deformed steel bar, but the material and shape are not limited to this, and of course, it may be a threaded reinforcing bar, a round bar, or the like.

Further, the number of anchors 90 provided in the female joint member 2 and the male joint member 4 is not limited to one, and may be plural. For example, when the female joint member 2 includes two anchors 90, the anchors 90 may be arranged along the sliding direction as shown in FIG. Note that the arrangement of the plurality of anchors 90 is not limited to the direction along the sliding direction, but can of course be set as appropriate, such as in a direction orthogonal to the sliding direction. Further, in the male joint member 4 as well, the arrangement of the anchors 90 is appropriately set as in the case of the female joint member 2 described above.

Further, when the female joint member 2 is constituted by the partial bodies 44 and 46, an anchor arrangement groove 92 for arranging the anchor 90 may be formed in the coupling surfaces 44a and 46a. Specifically, in the joint surface 44a of the partial body 44, the anchor arrangement groove 92 has a groove shape including concavities and convexities corresponding to the concavities and convexities of the outer shape of the anchor 90, as shown in FIG. It has a groove shaped to fit and engage a protrusion such as a muscle. Note that the partial body 46 has an anchor arrangement groove 92 similar to that of the partial body 44. Therefore, by combining the partial bodies 44 and 46, the anchor 90 fits into each anchor placement groove 92 and is held between the partial bodies 44 and 46. In addition, when using a U-shaped anchor as the anchor 90, as shown in FIG. 20, the anchor arrangement groove 92 is made into the groove shape which curves and extends into a U-shape.
It is preferable that the anchor arrangement groove 92 has a shape that can suppress rattling of the anchor 90 arranged in the female joint member 2. Examples of the shape of such an anchor placement groove 92 include, for example, a groove shape that closely contacts the anchor 90, and a shape in which a protruding strip 93 is provided at the bottom of the anchor placement groove 92 as shown in FIG. 37(a). There is a shape. The protruding strip 93 has a convex cross section that protrudes from the bottom of the anchor groove 92 toward the opening, and has a shape that extends continuously along the X direction. If such protruding stripes 93 are brought into contact with the anchor 90, when the female joint member 2 is configured, the protruding stripes 93 of the partial bodies 44 and 46 will sandwich the anchor 90, and the female joint member 2 It is possible to suppress the wobbling of the anchor 90 against the anchor 90.
The protruding strip 93 may be formed only on either one of the partial bodies 44 and 46. Further, the protruding length of the protruding strip 93 is set so that at least when the female joint member 2 is configured, the protruding length is set so that the protruding strip 93 reliably abuts on the anchor 90. Therefore, when the protruding stripes 93 are formed on both the partial bodies 44 and 46, the gap between the protruding stripes 93 is set to be less than or equal to the diameter of the anchor 90. Note that if the gap is set to be less than the diameter of the anchor 90, when the female joint member 2 is configured, the protruding strip 93 and/or the anchor 90 can be forcibly deformed elastically or plastically, and the protruding strip 93 can be Anchor 90 can be clamped.
Note that the cross-sectional shape of the protruding strip 93 can be set as appropriate, such as a mountain shape with a protruding tip, a mountain shape with a curved tip surface, a mountain shape with a planar tip surface and a trapezoidal cross section. Further, the arrangement position and the extending direction of the protruding strip 93 are not particularly limited, but the arrangement position should be set on the side of the anchor arrangement groove 92 closer to the plate part 12a (the end side in the +Z direction). For example, the protruding strip 93 can press the anchor 90 to one side (-Z direction) along the longitudinal direction of the anchor 90. That is, the anchor 90 can be pressed against the end surface 92a. More specifically, since the protruding strip 93 presses the anchor 90 from a position biased in the +Z direction within the anchor placement groove 92, a vector in the −Z direction acts on the anchor 90, and the anchor placement groove 92 By pressing the anchor 90 against the -Z direction side end surface 92a of the anchor 90, wobbling of the anchor 90 can be further suppressed.
The anchor arrangement groove 92 is formed so that substantially the entire U-shaped bent portion of the anchor 90 fits thereinto, that is, the -Z direction side end surface 92a of the anchor arrangement groove 92 is formed as shown in FIG. It is preferable to form it so that it has a semicircular shape. As a result, the end surface 92a comes into contact with substantially the entire surface of the inwardly bent portion of the anchor 90, so that the female joint member 2 and the anchor 90 are more firmly engaged, and the female joint member 2 and the anchor 90 are oriented in opposite directions. Breaking strength when subjected to tensile force can be improved. Moreover, the end surface 92b facing the end surface 92a of the anchor arrangement groove 92 in the +Z direction does not necessarily have to be a curved surface, and may be a planar shape as shown in FIG. 37(c).
Further, the protruding stripes 93 are not limited to those that extend continuously along the X direction, but may be formed by disposing intermittently a plurality of protruding stripes each having a short length in the X direction. It may be something that has been done.

Note that, instead of having an anchor, the female joint member 2 and the male joint member 4 may have a shape in which the outer circumferential surface of the portion embedded in the segment (member to be joined) does not separate from the segment. For example, in the female joint member 2, as shown in FIG. 21, the width of the outer circumferential surface 94 of the buried portion buried in the segment 102 gradually decreases from the inside of the segment 102 toward the joint surface 108. The cross section is formed into a trapezoidal shape or the like. Alternatively, the size of the outer circumferential surface 94 changes depending on the depth from the joint surface 108 in the segment 102, that is, the closer it is to the joint surface 108 side, the smaller the outer shape is, and the further away from the joint surface 108, the larger the outer shape is. Form it like this. Of course, the male joint member 4 may have a similar shape.

Further, in the male joint member 4, as shown in FIG. 22, one or more protrusions 97 such as ribs or knots may be formed on the outer peripheral surface of the embedded portion 96 embedded in the segment. This protrusion 97 is not particularly limited in shape, but may be formed, for example, in an endless shape, a spiral shape, or an intermittent loop, but at least perpendicular to the direction in which it is separated from the segment 102. It is preferable to stretch along the direction. Further, the plurality of protrusions 97 may cause the outer circumferential surface of the buried portion 96 to have an uneven shape (including a minute unevenness). Of course, the female coupling member may have a similar shape.

Alternatively, a hole may be provided in the buried portion 96 and a rod or the like may be inserted through the hole to function as an anchor. Of course, if the segment 102 is a member manufactured by solidifying a fluid such as a concrete member, the male joint member 4 can be firmly attached to the segment 102 by flowing the fluid into the hole in the buried portion 96. It can be fixed to the base, eliminating the need for rods. Further, concave holes may be formed in the buried portion 96 instead of penetrating holes, and the number and size of the holes are set as appropriate.

When the buried portion 96 of the male joint member 4 has a function equivalent to that of an anchor, the male joint member 4 is used as a part and combined with other parts to form the female joint member 2. You can. For example, the male joint member 4 shown in FIG. 23(a) has a hole 98 formed in a buried portion 96, and is used as the partial body 54. In this case, the surfaces of the other partial bodies 50 and 52 constituting the female joint member 2, as shown in FIG. It shall have irregularities that fit into the surface. If the male joint member 4 is used as the partial body 54 in this way, the partial body 54 can function as an anchor, so the manufacturing cost of the joint can be reduced compared to the case where an anchor is provided. Furthermore, since the types of partial bodies to be manufactured can be reduced, the manufacturing cost of the female joint member 2 can be reduced as a result.

Furthermore, the female joint member 2 and the male joint member 4 may be integrated with the anchor. Specifically, a portion of the anchor is plastically deformed, such as by forging, to form a partial body forming a part of the female joint member 2 or the male joint member 4. That is, when forming a partial body of the female joint member 2, one end of one anchor 200 shown in FIG. 24(a) is forged (hot forging, warm forging, or cold forging) to form The approximate outer shape of the partial body 210 shown in FIG. 2(b) is formed. Next, by forging using another die, portions such as the joining surface 212 and the guide regulating portion 13 are formed on the partial body 210 having the approximate outer shape, as shown in FIG. 24(c). In this way, the partial body 210 is formed from the anchor 200.

When constructing the female joint member 2 using the partial body 210, for example, as shown in FIG. 25(a), it may be coupled to another partial body 210, or as shown in FIG. 25(b), It may also be coupled to a partial body that does not include the anchor 200, such as body 44 (or partial body 46).

Note that the position of the anchor 200 relative to the partial body 210 is preferably at the center of the end surface of the partial body 210, but is not limited to this, and as shown in FIG. It may be in a different position. In this case, the female joint member 2 is preferably connected by similar partial bodies 210, as shown in FIG. 27, so that when a load in the axial direction of the anchor 200 is applied, It is possible to prevent the load from becoming unbalanced.

In the case of the male joint member 4, the approximate outer shape of the male joint member 4 shown in FIG. 28(b) is formed by forging from one end of one anchor 200 shown in FIG. 28(a). Next, by forging using another die, parts such as the fitting protrusion 20 are formed in the male joint member 4 having the approximate outer shape, as shown in FIG. 28(c). In this way, the male joint member 4 is formed from the anchor 200.

In the female joint member 2 described above, the two plate parts 12 are arranged along the Z direction, that is, the gaps between the plate parts 12 are substantially uniform, but this is not limiting. As shown in (a), even if it is inclined so as to form a substantially V-shape so that the gap gradually widens from the bottom surface of the concave receiving part 10 to the opening (from the -Z direction side to the +Z direction side) good. Further, as shown in FIG. 29(b), the receiving portion 10 may be inclined in an inverted V shape so that the gap gradually narrows from the bottom surface of the receiving portion 10 to the opening.

Further, the pitch of the unevenness of the guide regulating portion 13 of the female joint member 2 can be set as appropriate, and in particular, the pitch may be gradually changed along the Z direction. For example, as shown in FIG. 29(c), the pitch may be gradually increased from the opening of the recessed receiving portion 10 toward the bottom surface (from the +Z direction side to the -Z direction side). . Alternatively, as shown in FIG. 29(d), the pitch may be gradually decreased from the opening of the recessed receiving portion 10 toward the bottom surface (from the +Z direction side to the -Z direction side). . In this case, of course, the outer shape of the fitting protrusion 20 of the male joint member 4 is formed to match the shape of the guide regulating portion 13.

Thereby, it is possible to reliably align the female joint member 2 and the male joint member 4 along the pitch direction of the unevenness. That is, the fitting protrusion 20 cannot be inserted into the insertion opening 10a if the pitch of the unevenness of the fitting surface 20a is shifted from the unevenness of the guide regulating part 13. Therefore, it is possible to reliably align the male joint member 4 and the female joint member 2 along the pitch direction of the unevenness.

Further, in the female joint member 2, although the positions of the striped portions 13a of each plate portion 12 in the Z direction are made to match, the positions of the striped portions 13a may be made to differ. For example, as shown in FIG. 30, the guide regulating portion 13 of one plate portion 12 forms a convex portion, while the guide regulating portion 13 of the other plate portion 12 forms a concave portion. 12 may be formed. Furthermore, the positioning of the female joint member 2 and the male joint member 4 can be achieved not only by matching the unevenness of the fitting surface 20a and the unevenness of the guide regulating part 13, but also by the alignment of the receiving part 10 of the fitting protrusion 20. This may be done depending on the shape of the fitting tip. For example, as shown in FIG. 31, the insertion protrusion 20 may form a positioning portion 230 having a semicircular tip end. Further, in this case, the receiving portion 10 has a groove portion 232 at the bottom into which the positioning portion 230 can fit.

Note that the shapes of the fitting protrusion 20 and the receiving portion 10 can be set as appropriate. For example, the front end of the fitting protrusion 20 in the insertion direction (+X direction side) in the sliding direction may be formed to be thinner than the rear end. Moreover, if the opening on the side of the insertion port 10a of the receiving part 10 is made wider than the opening on the back side in the sliding direction, when the male joint member 4 is slid relative to the female joint member 2, The insertion protrusion 20 can easily enter the insertion opening 10a. Specifically, as shown in FIG. 32(a), in the receiving part 10, the gap between the two plate parts 12 on the side of the insertion port 10a is b1, and the gap between the plate parts 12 at the end in the +X direction is b2. When b1>b2 is satisfied. Further, the insertion protrusion 20 has a thickness b2 in the Y direction at the front end in the insertion direction in the sliding direction, and b1 a thickness in the Y direction at the rear end.

The shape of the receiving part 10 that satisfies the above gap condition can be set as appropriate, but the plate part 12 may be inclined with respect to the X axis, and as shown in FIG. The thickness of the portion 12 may be such that the front end of the plate portion 12 in the insertion direction in the sliding direction is thinner than the rear end. Further, as shown in FIG. 32(c), the thickness of the front end of the insertion protrusion 20 in the insertion direction in the sliding direction is thinner than the other thickness, and/or the front end of the plate part 12 in the insertion direction in the sliding direction is made thinner. may be thinner than the other thicknesses. In either case, it is preferable that the shape of the fitting protrusion 20 is set to approximately correspond to the receiving space of the receiving part 10, that is, set to a shape that allows it to fit into the gap between the plate parts 12.

Note that the sliding direction of the male joint member 4 relative to the female joint member 2 can be set as appropriate, and may be a direction substantially parallel to the joint surfaces of the segments, or the direction in which the male joint member 4 slides relative to the female joint member 2 may be parallel to the joining surface of the segments, or 2 and the male joint member 4 may gradually approach each other. That is, in the female joint member 2, as shown in FIG. 33, the striped portion 13a is set to gradually incline in the -Z direction along the +X direction from the insertion port 10a side.

Note that the cross-sectional shapes of the unevenness of the fitting surface 20a and the unevenness of the guide regulating portion 13 are not limited to a chevron shape, but can be set as appropriate as long as they engage with each other. FIG. 34 is a diagram showing an example of the shape of the unevenness of the guide regulating part 13, and the cross-sectional shape of the unevenness of the guiding regulating part 13 may be, for example, a sawtooth shape. In that case, a sawtooth shape consisting of an inclined surface connecting the bottom of the concave part and the tip of the convex part and a plane parallel to the Y axis as shown in FIG. 34(a), or a sawtooth shape as shown in FIG. It may also be set in a sawtooth shape tilted in the direction. Further, the unevenness of the guide regulating portion 13 may be a waveform in which the tip of the convexity is curved as shown in FIG. 34(c), or the convexity in the waveform shown in FIG. It may also have a tilted shape. Further, as shown in FIG. 34(e), the uneven surface may have a concavo-convex shape consisting of planes parallel to the Z direction and the Y direction, or as shown in FIG. 34(f), it may have a trapezoidal concavo-convex shape.
Further, the plurality of irregularities may each have the same shape and/or similar shape, or may have a shape in which some or all of them are different.

Note that in order to improve the strength of the plate portion 12 against input along the Y direction in the female joint member 2, the wall thickness may be increased, but other methods, such as the plate portion shown in FIG. 35, may be formed. A reinforcing portion 240 such as a rib or a flange may be provided on the outside of 12 to improve strength. Note that the reinforcing portion 240 is preferably disposed so as to extend in the direction of the plate portion 12Z. Further, although the number of reinforcing portions 240 may be singular, it is preferable to provide a plurality of reinforcing portions 240 in order to improve strength.
Furthermore, when a plurality of reinforcing parts 240 are provided, another reinforcing part 242 may be provided so that the reinforcing parts 240 can be connected to each other as shown in FIG. 35(b). can improve the strength of

Note that various materials can be used for the joint 1 of the present invention depending on the desired strength, manufacturing cost, environmental conditions in which the segment is used, etc., and of course, various joint members may be made of synthetic materials in addition to metals. It can be formed using an appropriate material such as resin, wood, paper, glass, ceramics, rubber, or a composite material thereof by an appropriate manufacturing method.

Further, the joint of the present invention can be applied to objects to be joined other than segments, and examples of the material of the objects to be joined include concrete, metal, synthetic resin, wood, etc. The shape of the members to be joined may be, for example, plate-like, columnar, or cylindrical block-like, and can be applied to joining members of the same type or members of different types. In addition to the above-mentioned shield segments, we also offer bookshelves, precast concrete members (precast concrete members) in general, furniture in general, building materials for civil engineering and/or construction and construction, including housing frame materials, and various machines. It can be applied to any article.

DESCRIPTION OF SYMBOLS 1...Joint, 2...Female type joint member, 4...Male type joint member, 10, 32...Receiving part, 10a, 32a...Insertion port, 12...Plate part, 13, 37...Guiding regulation part, 13a, 37a...Strip Shape part, 14... Connecting part, 20... Fitting projection part, 20a... Fitting surface, 21... Strip part, 30... Joint member, 34... Connection part, 36... Side wall, 38... Continuous part, 44, 46, 50, 52, 54, 60, 62, 64...partial body, 44a, 46a...joint surface, 56...shear key, 66...uneven surface, 100...tunnel, 102...segment, 104...ring, 108...joint surface, 110a , 110b...Space.

Claims (16)

A joint configured such that a first joint member and a second joint member can be joined to each other by relatively sliding movement,
The first joint member has an uneven fitting protrusion in which a plurality of first stripes are arranged in a row on the outer peripheral surface,
The second joint member has a concave receiving portion on its end surface,
The concave receiving portion includes an insertion port formed on a surface perpendicular to the end surface, and a plurality of second stripes extending from the insertion port along the sliding direction and formed within the inner circumferential surface of the receiving portion. and a concave and convex guide regulating section formed by a row of sections arranged in a row,
The receiving part guides the movement of the fitting protrusion along the sliding direction by causing the guide regulating part to fit the unevenness of the fitting protrusion into the first part in a direction different from the sliding direction. The striped portion and the second striped portion interfere to restrict relative displacement of the fitting protrusion in a direction different from the sliding direction ,
The receiving part is constituted by a plurality of partial bodies that are separate from each other,
A joint characterized in that the partial body forms the fitting protrusion . The receiving portion has two opposing surfaces parallel to the sliding direction,
The joint according to claim 1, wherein the second striped portion is formed on one or both of the two surfaces. 12. The two surfaces of the receiving portion have an inclined portion such that at least one of the two surfaces can widen or narrow the gap from the opening of the receiving portion toward the bottom of the receiving portion. 2. The joint described in 2. The joint according to claim 2 or 3, wherein the distance between the two surfaces of the receiving portion has a portion that decreases along the direction of the slide. At least one of the two surfaces of the receiving portion and/or the fitting protrusion has a thickness at a front end portion of the fitting protrusion facing the insertion direction in the sliding direction that is thinner than a rear end portion thereof. The joint according to any one of claims 2 to 4, characterized in that: The unevenness of the guide regulating portion is formed at equal pitches or different pitches,
6. The joint according to claim 1, wherein the projections and depressions of the fitting protrusion are formed at equal pitches or different pitches. According to any one of claims 1 to 6, the unevenness of the guide regulating portion and the unevenness of the insertion protrusion have a cross-sectional shape of any one of a mountain shape, a wavy shape, a minute unevenness shape, and a sawtooth shape. fittings. The joint according to any one of claims 1 to 7 , wherein the receiving portion is formed by a plurality of the fitting protrusions. 9. The joint according to claim 1 , wherein the receiving portion is formed by integrating the plurality of partial bodies by gluing, welding, welding, fitting, and/or fastening. The partial body has a surface that becomes a mating surface with another partial body, which is a flat surface, a slightly uneven surface, and/or a surface that is a mating surface with the other partial body.
The joint according to any one of claims 1 to 9, characterized in that the joint has an uneven surface shape that can be fitted into each other. The first joint member has the receiving portion,
The second joint member has the fitting protrusion,
The fitting protrusion of the second joint member fits into the receiving portion of the first joint member,
The joint according to any one of claims 1 to 10, wherein the fitting protrusion of the first joint member fits into the receiving portion of the second joint member. The joint according to any one of claims 1 to 11, wherein the first joint member and the second joint member have an anchor portion. The partial body has a fitting groove into which at least a portion of the anchor is fitted,
11. The joint according to claim 1 , wherein the plurality of partial bodies sandwich the anchor. 14. A joint according to any one of claims 1 to 13 , characterized in that the receiving part is provided with a reinforcing part on the outside. The partial body has a protruding strip at the bottom of the fitting groove,
14. The joint according to claim 13 , wherein the protruding strip comes into contact with the anchor. The protruding strip is disposed on one side of the fitting groove along the longitudinal direction of the anchor,
16. The joint according to claim 15 , wherein the anchor is pressed against an inner wall of the fitting groove located on the other side along the longitudinal direction by the protruding strip.

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