JP4999618B2 - Tenon rod and tenon joint - Google Patents

Description

  The present invention relates to a mortise rod and a mortise joint that are used for manufacturing wooden buildings, furniture, and the like and used for joining adjacent members.

In a wooden building, there is known a mortise pipe that can be used for joining adjacent members, for example, adjacent main pillars and child pillars. The mortar pipe has a plurality of pin insertion holes on its outer peripheral surface. These pin insertion holes penetrate the mortise pipe in the diameter direction (Patent Document 1).
The tenon pipes described above are inserted into horizontal mortises formed at the joint surfaces of the main column and the child column, and extend across both the main column and the small column. By inserting the driving pins into the respective pin insertion holes through the formed pin holes, that is, by driving them in, the tenon pipe and the driving pin can join the main column and the child column to each other.
Japanese Patent Laid-Open No. 2003-213798

In the case of the tenon pipe of the above-mentioned patent publication, if the pin hole on the column side and the pin insertion hole of the tenon pipe do not match each other, the driving pin cannot be driven. Therefore, prior to driving the driving pin, the pin hole and the pin It is necessary to match the insertion hole with each other, and much effort and labor are required until the driving pin is driven.
The present invention has been made based on the above circumstances, and an object of the present invention is to provide a tenon rod and a tenon joint that can greatly reduce labor and labor required to drive a driving pin.

In order to achieve the above-mentioned object, at least one mortise rod of the present invention is formed on the rod body and the outer peripheral surface of the rod main body, extends over the entire circumference of the outer peripheral surface, and can be engaged with the driving pin. A spiral groove and an operating portion provided in the rod body and capable of rotating around the axis of the rod body are provided.
According to the above-mentioned tenon rods, because the spiral groove extends over the entire circumference of the rod body, prior to the implantation pin implanted, related to the circumferential direction of the rod body, it is not necessary to make the positioning of the helical groove.

Specifically, the cross-sectional shape of the spiral groove may be either an arc shape or a rectangular shape .

Also, when the rod body is in a state where the pin driving the inserted and spiral groove are engaged in the mortise member, the rod body is rotated about the axis line via the operation unit, the spiral groove and the driving pin Cooperate with each other to generate a force that pulls the member in the axial direction of the rod body.

Further, the spiral groove may be formed such that the end of the rod body is formed into a screw (Claim 2 ), and in this case, the rod body can be inserted while being screwed into the mortise.
Furthermore, the rod body can have the spiral grooves different from each other orientations of the spiral on each of its both end portions (claim 3). In this case, when both ends of the rod body are inserted into the mortises of the first and second members to be joined to each other and the driving pins are engaged with the spiral grooves at both ends , When the rod body is rotated about the axis, the spiral groove and the driving pin cooperate with each other to generate a force that attracts the first and second members to each other in the axial direction of the rod body.

Rod body but it may also be one comprising respectively a spiral groove and an annular groove at one end and the other end (claim 4).
The tenon rod of the invention includes a rod main body and a peripheral groove formed on the outer peripheral surface of the rod main body and extending over the entire outer periphery of the rod main body and capable of engaging with the driving pin. When provided, the rod body is composed of a pair of rod halves that are separably connected to each other via a joint portion from the center in the axial direction thereof, and is provided at each end of the rod body with a circumferential groove. It is a spiral groove (Claim 5).
On the other hand, the present invention provides a tenon joint comprising the tenon rod according to any one of claims 1 to 5 and a driving pin engageable with a helical groove of the tenon rod (claim 6).
Moreover, tenon rod of the present invention, in addition to the above, while the circumferential groove is formed at one end of the rod body has an inverted conical end which is tapered toward its one end to the other end of the rod body (Claim 7 ).

Furthermore, the present invention includes a tenon rod of claim 7, the inverted cone end of the tenon rod provides tenon joint consisting acceptable hollow driving pin, the driving pin is of inverted conical end and extending in the axial direction has a split groove for guiding the neck, the split groove is the groove width over from one end to the other end of the driving pin is gradually reduced (claim 8).
In the case of the tenon joint of claim 8 , the driving pin is driven in a state where the neck of the reverse tapered end is positioned in the split groove, and the groove width of the split groove is expanded by the neck of the reverse tapered end in accordance with the driving. As a result, the inner diameter of the driving pin is increased, and the driving pin is pressed against the inner surface of the pin hole.

Both tenon rod及Biho of claims 1-8 each joint, since the driving pin is engaged with the spiral groove or circumferential groove of the rod body, prior to the implantation pin implanted, with respect to the circumferential direction of the rod body, It is not necessary to align the pin hole for the driving pin with the circumferential groove of the rod body. Therefore, the labor required to drive the driving pin is greatly reduced, so that the joining work using the mortise rod and the mortise joint can be performed easily and quickly.

FIG. 1 shows a tenon rod 2 of a reference example in explaining the tenon rod of the present invention .
The mortise rod 2 has a rod body 4 made of a metal round bar, and circumferential grooves formed at both ends of the rod body 2, i.e., annular grooves 6. These annular grooves 6 have an arc shape in cross section, and are used for engagement with driving pins, so-called drift pins.
FIG. 2 shows a usage form of the tenon rod 2 described above.

In the case of FIG. 2, the mortise rod 2 and the drift pin are used for joining the pillar A and the cross B, and each of the pillar A and the cross B is made of wood. The mortises for receiving the mortise rods 2 are formed horizontally in the columns A and B, and the open ends of these mortises can be matched with each other at the joining surfaces of the columns A and B.
Furthermore, a plurality of pin holes are respectively formed at predetermined positions in the pillar A and the crosspiece B. These pin holes are arranged in pairs so as to sandwich the mortise from above and below, and extend in the horizontal direction across the mortise.

As is clear from FIG. 2, the pillar A and the cross B are in contact with each other at their joint surfaces with the portions on both ends of the mortise rod 2 inserted into the mortises. In this state, drift pins made of metal round bars are respectively driven into the pin holes.
More specifically, as is clear from FIG. 2, the drift pin is engaged with the annular groove 6 so that the annular groove 6 of the mortise rod 2 is sandwiched from above and below, that is, two pairs of grooves inserted into the annular groove 6. It includes a drift pin C and two pairs of drift pins D that sandwich the rod body 4 of the tenon rod 2 from above and below.

The tenon rod 2 described above cooperates with the drift pin C engaged with the annular groove 6 to join the column A and the crosspiece B to each other, and the drift pin D supports the crosspiece B through the tenon rod 2.
2 to 11 show various modifications of the mortise rod 2 according to the reference example .
The tenon rod 2 in FIG. 3 has an annular groove 6 only at one end thereof. A hexagonal head 8 is formed integrally with the other end of the mortise rod 2. The hexagonal head 8 has a larger diameter and a hexagonal shape than the rod body 4.

The tenon rod 2 of FIG. 4 also has an annular groove 10 only at one end thereof, and the annular groove 10 has a rectangular cross section. The other end of the mortise rod 2 in FIG. 4 is formed as a male screw portion 12.
FIG. 5 shows a usage pattern of the mortise rod 2 of FIG.
The mortise rod 2 is inserted into the mortise of the column A with the male threaded portion 12 protruding, and a drift pin E is driven into the column A and engaged with the annular groove 10 so that the mortise rod from the column A 2 is secured. Here, since the cross section of the annular groove 10 has a rectangular shape, the drift pin E also has no rectangular cross section, and its tip is formed in a tapered shape.

The external thread portion 12 of the tenon rod 2 protruding from the column A is used for mounting or supporting a member to be joined to the column A.
The tenon rod 2 in FIG. 3 is also used in a usage pattern similar to the usage pattern shown in FIG. 5, and the hexagon head 8 sandwiches a member to be joined to the column A between the column A and the hexagon head 8. Used for

The mortise rod 2 in FIG. 6 has an annular groove 6 at the center of the rod body 4 in the axial direction, and both ends of the rod body 4 are formed as male threaded portions 12. In this case, the mortise rod 2 in FIG. 6 is inserted into the mortise of the column A with the male screw portions 12 at both ends projecting from both side surfaces of the column A.
The mortise rod 2 in FIG. 7 has an annular groove 6 and a male threaded portion 12 in the rod body 4, while an end opposite to the male threaded portion 12 allows the rod body 4 to rotate about its axis. It is formed as. The outer diameter of the hexagonal tail end 14 is smaller than the outer diameter of the rod body 4.

FIG. 8 shows a usage form of the mortise rod 2 of FIG.
As is clear from FIG. 8, the mortise rod 2 of FIG. 7 is inserted into the mortise with the male threaded portion 12 protruding from the column A and the hexagonal tail end 14 immersed in the mortise of the column A. ing. On the other hand, a pair of drift pins C and D are driven into the pillar A, and these drift pins C and D exhibit the same function as in the case described above (see FIG. 2). A mounting bracket F made of an angle member is screwed onto the male screw portion 12, and the mounting bracket F is in contact with the column A.

The male screw portion 12 is screwed into the mounting bracket F by rotating the hexagonal tail end 14 of the tenon rod 2. Further, since the hexagonal tail end 14 does not protrude from the column A, the hexagonal tail end 14 does not hinder the attachment of other members to the column A.
The tenon rod 2 of FIG. 9 differs from the tenon rod of FIG. 7 only in that it has a hexagonal hole 15 at the end of the rod body 4 instead of the hexagonal tail end 14 of FIG.

The mortise rod 2 of FIG. 10 has two annular grooves 6 formed adjacent to each other at one end of the rod body 4 and a male screw portion 12 formed at the other end of the rod body 4. The usage form of the tenon rod 2 of FIG. 10 is shown.
As is apparent from FIG. 11, a counterbore G in which the open end of the mortise is enlarged is formed in the column A, and the mortise rod 2 in FIG. 10 has its male threaded portion 12 positioned in the counterbore G. In the state, it is inserted into the mortise of the pillar A and the cross B. A nut I is screwed onto the male thread portion 12 via a washer H. The washer H and the nut I cooperate with a pair of drift pins C engaged with one annular groove 6, and the axis of the tenon rod 2. The displacement of the direction is constrained, and the column A and the cross B are joined together.

Further, a drift pin J is engaged with the other annular groove 6, and this drift pin J is orthogonal to the drift pin C. Such a drift pin J further strengthens the connection between the pillar A and the cross B.
FIG. 12 shows the tenon rod 2 of the first embodiment of the present invention .
The mortise rod 2 in FIG. 12 differs from the mortise rod 2 in FIG. 3 only in that the annular groove 6 is replaced with a spiral groove 16, and its use form (tenon joint) is shown in FIG. 13. .

  As is apparent from FIG. 13, the mortise rod 2 of FIG. 12 is inserted into the slot of the cross B with the hexagon head 8 protruding from the end face of the cross B. Also in this case, the pair of drift pins C are engaged with the spiral groove 16 so as to sandwich the spiral groove 16 up and down. They are positioned out of alignment with each other. FIG. 13 also shows a drift pin J that engages with the spiral groove 16 and a drift pin D that contacts and engages with the outer peripheral surface of the rod body 4.

The hex head 8 of the tenon rod 2 in FIG. 12 has a U-shaped mounting bracket K sandwiched between the end face of the cross B. This mounting bracket K is joined to the cross B and used to attach other members to the cross B.
In the case of the mortise rod 2 in FIG. 12, when the mortise rod 2 is rotated in the screwing direction of the spiral groove 16 in the usage pattern shown in FIG. 13, the spiral groove 16 causes the drift pins C and J to move to these pin holes. Therefore, the engagement between the drift pins C and J and the spiral groove 16, that is, the connection between the mounting bracket K and the cross B can be strengthened.

If the mortise rod 2 is rotated in the opposite direction, the mortise rod 2 presses the drift pins C and J in the opposite direction against the inner surface of the pin hole. Can be attracted.
14 and 15 shows the second embodiment of the present invention.
The tenon rod 2 in FIG. 14 differs from the tenon rod 2 in FIG. 12 only in that the spiral groove 16 forms one end of the tenon rod 2 on the screw 18. It extends over a predetermined length from one end.

FIG. 15 shows a usage form (tenon joint) of the tenon rod 2 of FIG. This type of use is similar to the type of use of the mortise rod 2 shown in FIG. 13, but in the case of the mortise rod 2 of FIG. 14, the mortise rod 2 has driven drift pins C, D, and J into the cross B. Later, it can be inserted into the mortise of the cross.
16 to 18 show a third embodiment of the present invention . The tenon rod 2 of FIG. 16 differs from the tenon rod 2 of FIG. 12 only in the form of the spiral groove 16. Specifically, the spiral groove 20 of the mortise rod 2 in FIG. 16 has a cross-sectional rectangular shape instead of a circular cross-sectional shape.

FIG. 17 shows a usage form (tenon joint) of the tenon rod 2 of FIG. In this case, the drift pin E as described above is engaged with the spiral groove 20 of the mortise rod 2, and this drift pin E is shown in an enlarged manner in FIG.
19 and 20 show a fourth embodiment of the present invention . The tenon rod 2 of FIG. 19 has spiral grooves 16 at both ends of the rod body 4, and the spiral directions of these spiral grooves 16 are mutually different. The direction is reversed. Specifically, as shown in FIG. 19, the spiral direction of the left spiral groove 16 is counterclockwise, whereas the spiral direction of the right spiral groove 16 is clockwise.

Further, in the case of the tenon rod 2 of FIG. 19, a hexagonal flange 22 is integrally formed on the outer peripheral surface of the rod body 4, and the hexagonal flange 22 has an outer diameter larger than the outer diameter of the rod body 4.
FIG. 20 shows a usage form (tenon joint) of the tenon rod 2 of FIG.
The mortise rod 2 in FIG. 19 is used to join the two crosspieces B1 and B2 to each other. More specifically, grooves that can be matched with each other are formed on the joint surfaces of the crosspieces B1 and B2, respectively. When the crosspieces B1 and B2 are joined together and joined together, the access holes L having a rectangular cross section are formed. Form. The mortise rod 2 is inserted into the mortises of the crosspieces B1 and B2 so that the hexagonal flange 22 is positioned in the access hole L, and the crosspieces B1 and B2 are inserted through the driving of the drift pins C, D, and J. Held in.

In this case, when the mortise rod 2 is rotated from the access hole L through the hexagonal flange 22 in the screwing direction of the spiral groove 16, this rotation causes the crosspieces B1 and B2 to approach each other via the drift pins C and J. Attract to. Therefore, these crosspieces B1 and B2 are firmly joined without causing a gap in the joining surfaces.
21 and 22 show a fifth embodiment of the present invention . When the tenon rod 2 of FIG. 21 is compared with the tenon rod 2 of FIG. 19, the length of the rod body 4 is the same as that of the tenon rod 2 of FIG. It is longer than the length of the rod body 4 and differs only in that the hexagonal flange 22 is disposed not in the axial center of the rod body 4 but in the vicinity of one spiral groove 16.

FIG. 22 shows a usage form (tenon joint) of the mortise rod 2 of FIG. The mortise rod 2 is used to sandwich the column A between the crosspieces B1 and B2 and join them together. In this case, the hexagonal flange 22 of the tenon rod 2 is positioned in a groove formed on the joint surface of the crosspiece B2, and by rotating the tenon rod 2 through the hexagonal flange 22, the crosspieces B1 and B2 are attracted to the column A. This is possible, and the crosspieces B1 and B2 can be joined to the pillar A without causing a gap between the pillar A and the crosspiece B, respectively.

Incidentally, one of the drift pins D driven into the pillar A, specifically, the drift pin D indicated by adding a subscript x in FIG. 22 can be replaced with the tenon rod 2 of FIG. The tenon rod 2 in this case is used to join two crossbars (not shown) separately from the crosspieces B1 and B2 to the column A so as to intersect the crosspieces B1 and B2.
23 and 24 show a sixth embodiment of the present invention, and the mortise rod 2 of FIG. 23 has a split structure and is composed of rod halves 2a and 2b. Each of the rod halves 2a and 2b has a spiral groove 16 at one end thereof, and the other end of each of the rod halves 2a and 2b is formed as a joint portion 24 that connects the rod halves 2a and 2b in a separable manner. ing. More specifically, the joint portion 24 of the rod halves 2a and 2b can be engaged with each other, that is, a groove 26 formed at a predetermined interval from the other end of the rod half, and the other end from the groove 26. The bottom surface 26 a of the groove 26 is inclined in the same direction so as to be parallel to the inclined surface 28.

According to the joint portion 24 described above, the rod half 2a is arranged so that the inclined surface 28 on the rod half 2b side and the bottom 26a of the groove 26 are superimposed on the bottom 26a and the inclined surface 28 of the groove 26 on the rod half 2a side, respectively. , 2b can be meshed with each other so that the rod halves 2a, 2b can be made into one continuous tenon rod 2.
FIG. 24 shows a use form (tenon joint) of the tenon rod 2 of FIG. 23. In this case, the tenon rod 2 has two crosspieces B1 and B2 on the column A as in the case of the tenon rod 2 of FIG. Can be used to join.

25 and 26 show a seventh embodiment .
The tenon rod 2 of FIG. 25 has a spiral groove 16 at one end of the rod body 4, and has an annular groove 6 and a hexagonal tail end 14 at the other end of the rod body 4.
FIG. 26 shows a usage form (tenon joint) of the tenon rod 2 of FIG. 25, and the tenon rod 2 is used to join the cross B to the column A.

FIG. 27 shows the tenon rod 2 of the eighth embodiment.
The tenon rod 2 in FIG. 27 differs from the tenon rod in FIG. 25 only in that it has a hexagonal hole 15 instead of the hexagonal tail end 14.
FIGS. 28 30 show a ninth embodiment, the ninth embodiment includes a tenon rod 30 similar to the tenon rod 2 described above, it consists of the drift pin 32..

Rod 30 Each sail 28 is an annular groove 6 formed on one end of the rod body 4, and a reverse conical end 34 of the other end of the rod body 4, opposite conical end 34 at one end of the rod body 4 Tapered toward the part.
On the other hand, as is apparent from FIG. 29, the drift pin 32 is formed of a hollow pipe and has an inner diameter capable of receiving the inverted conical end 34 from one end thereof. A split groove 36 is formed in the drift pin 32, and this split groove 36 extends in the axial direction of the drift pin 32 from one end to the other end of the drift pin 32, and its groove width extends from one end to the other end of the drift pin 32. It is gradually shrinking towards. In addition, one end of the drift pin 32 is cut off at a part of its outer periphery including the split groove 36, so that the one end opening of the drift pin 32 is further expanded to facilitate the reception of the inverted conical end 34. Has been.

FIG. 30 shows a usage form (tenon joint) of the tenon rod 30 described above.
The mortise rod 30 is used for joining the column A and the cross B, and the drift pin C driven into the cross B is engaged with the annular groove 16 of the mortise rod 30, while the mortise rod 30 is engaged. A drift pin 32 driven into the column A is engaged with the inverted conical end 34 of 30.
More specifically, when the drift pin 32 is driven with its one end opening as the head, the drift pin 32 receives the inverted conical end 34 from the one end opening, and at this time, the neck of the reverse conical end 34 is divided by the split pin 32. Guided into the groove 36. Thereafter, as the drift pin 34 is driven further deeper, the neck of the inverted conical end 34 is guided to the split groove 36, and the groove width of the split groove 36 is widened. 34, and the expansion of the split groove 36 expands the drift pin 32 outward in the radial direction, so that the drift pin 32 is strongly pressed against the inner peripheral surface of the pin hole. The drift pin 32 and the column A are also firmly engaged.

The present invention is not restricted to the embodiments described above.
For example, the mortise rod and mortise joint of the present invention are not only used for joining columns and rungs or joining rungs and mounting brackets, but also between various components included in wooden structures such as buildings, furniture, or game equipment. Of course, the material of the component is not limited to wood, as well as being widely usable for joining. That is, the tenon rod and tenon joint of the present invention can also be used for joining members made of various materials such as rubber, plastic or foamed concrete.

It is the figure which showed the tenon rod of the reference example . The usage form of the tenon rod of FIG. 1 is shown, (a) is a perspective front view of a column and a crosspiece joined via the tenon rod, and (b) is a perspective view thereof. It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . 4 shows a usage form of the mortise rod of FIG. 4, (a) is a perspective plan view of a column provided with a mortise rod, (b) is a perspective side view thereof, and (c) is a perspective view thereof. FIG. It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . The usage form of the mortise rod of FIG. 7 is shown, (a) is a see-through | perspective side surface of the column provided with the mortise rod, (b) is the see-through | perspective perspective view. It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . It is the figure which showed the tenon rod which is one deformation | transformation of a reference example . The usage form of the tenon rod of FIG. 10 is shown, (a) is a see-through | perspective side view of the pillar and the crosspiece with the tenon rod, and (b). It is the figure which showed the tenon rod of the 1st embodiment of this invention . 12 shows a usage form of the mortise rod of FIG. 12, (a) is a perspective plane surface of a cross bar provided with a mortise rod, (b) is a perspective side view thereof, and (c) is a perspective perspective view thereof. Ho Each of the second embodiment of the present invention is a diagram showing the rod. FIG. 13 shows a use form of the mortise rod of FIG. 13, (a) is a perspective plane surface of the cross wood provided with the mortise rod, (b) is a perspective side view thereof, and (c) is a perspective view thereof. Ho each of the third embodiment of the present invention is a diagram showing the rod. FIG. 16 shows a usage form of the mortise rod of FIG. 16, wherein (a) is a perspective plane surface of a column provided with a mortise rod, (b) is a perspective side view thereof, and (c) is a perspective perspective view thereof. The drift pin of FIG. 17 is shown, (a) is a side view, (b) is the end view. Ho Each of the fourth embodiment of the present invention is a diagram showing the rod. The usage form of the tenon rod of FIG. 19 is shown, (a) is a see-through | perspective plane surface of the crosspiece provided with the tenon rod, (b) is the see-through | perspective side view, (c) is the see-through | perspective perspective view. Ho each of the fifth embodiment of the present invention is a diagram showing the rod. 21 shows a usage form of the mortise rod of FIG. 21, (a) is a perspective plane surface of a column and a crossbar provided with a mortise rod, (b) is a perspective side view thereof, and (c) is a perspective view thereof. It is the figure which showed the tenon rod of the modification of the 6th embodiment of this invention , (a) shows the rod half body of a tenon rod, respectively, (b) is an end elevation of a rod half body. The usage form of the tenon rod of FIG. 23 is shown, (a) is a see-through | perspective plane surface of the column and crosspiece provided with the tenon rod, (b) is the see-through side view, (c) is the see-through perspective view. It is the figure which showed the tenon rod of the 7th embodiment of this invention . 25 shows a usage form of the mortise rod of FIG. 25, (a) is a perspective plane view of a column and a cross board provided with a mortise rod, (b) is a perspective side view thereof, and (c) is a perspective view thereof. It is the figure which showed the tenon rod of the modification of the 8th embodiment of this invention . Ho each of the ninth embodiment of the present invention is a diagram showing the rod. The drift pin of 9th embodiment is shown, (a), (b) is a side view, (c) is the end elevation. 28 shows a usage form of the tenon rod of FIG. 28 , (a) is a perspective plane surface of a column and a cross board provided with a tenon joint, (b) is a perspective side view thereof, (c) is a perspective perspective view thereof, (d). These are the figures which expand and show a part in (b).

Explanation of symbols

2,30 Tenon rod 2a, 2b Rod half 4 Rod body 6, 10 Annular groove (circumferential groove)
8 Hex head (operation unit)
12 Male thread 14 Hexagon tail end (operation part)
15 Hexagon socket (operation part)
16, 20 Spiral groove (circumferential groove)
18 screw (circumferential groove)
22 Hexagon flange (operation part)
24 Joint portion 32 Drift pin 34 Reverse conical end 36 Split groove A Column B Yokogi C, D, E, J Drift pin

Claims (8)

A rod body;
A spiral groove formed on the outer circumferential surface of the rod body, extending over the entire circumference of the outer circumferential surface and capable of engaging with a driving pin ;
An mortise rod, comprising: an operating portion that is provided on the rod main body and enables a rotation operation around an axis of the rod main body . The mortise rod according to claim 1 , wherein the spiral groove has an end portion of the rod body formed as a screw. The tenon rod according to claim 1 , wherein the spiral grooves are respectively provided at both ends of the rod body, and the spiral directions of the spiral grooves are different from each other. The spiral groove is provided at one end of the rod body ,
Tenon rod according to claim 1 and the other end portion of the rod body, characterized in that further comprises an annular groove. A rod body;
A circumferential groove formed on the outer peripheral surface of the rod body, extending over the entire circumference of the outer peripheral surface and capable of engaging with a driving pin;
With
The rod body is composed of a pair of rod halves that are separably connected to each other via a joint portion from the axial center.
The circumferential groove, the rod respectively ho according to claim 1, wherein the rod is at both ends provided spiral grooves of the body. The mortise rod according to any one of claims 1 to 5,
A driving pin engageable with the spiral groove;
A mortise joint characterized by comprising A rod body;
A circumferential groove formed on the outer peripheral surface of the rod body, extending over the entire circumference of the outer peripheral surface and capable of engaging with a driving pin;
Comprising
Wherein with the circumferential groove is formed at one end portion of the rod main body, wherein a sulfo each rod that has a reverse cone end and the other end was tapered toward the one end of the rod body. A mortise rod according to claim 7 ;
A hollow driving pin capable of receiving the inverted conical end of the tenon rod;
The driving pin has a split groove extending in the axial direction thereof and guiding the neck of the inverted conical end, and the groove width is gradually reduced from one end to the other end of the driving pin. Tenon joint characterized by.

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