JPS608517A - Wood joint for load transmission - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises at least one rectangular ``joint body'' inserted into a cavity of a circle, ellipse or other geometric shape in timber;
A load transmitting wooden joint having a plurality of load transmitting members held in the joint body and extending into the timber at right angles thereto.

In wooden buildings, especially in frame structures assembled with fixed joints, load transfer joints play a large role, especially when tension is applied in the longitudinal direction of adjacent beams, and many problems arise as a result. be.

This kind of action is particularly large at joints.

A longitudinal groove is formed at the joint of the beam, a metal plate of an appropriate size is placed in the groove, a hole is drilled from the side of the beam, the hole is positioned on the surface of the metal plate, and the metal plate is removed from the groove. Drill a hole through the beam, insert it again into the groove of the beam, and make a beam hole that passes through the beam. Next, screws are passed through the holes to fix the metal plate to the beam. The number of screws to be fixed and the cross-sectional area of the metal plate to be inserted are adjusted to the size of the transmitted load. According to the current construction conditions, the metal plate cannot be so large that it can be seen extending to the surface of the beam, so I glued pieces of wood to both sides of the metal plate and filled W4 so that it was flush with both sides of the beam. I will make it happen.

The joints are created by carefully welding the metal pieces that protrude from the ends of the beams, but space constraints and the fact that wood is flammable pose problems in the welding process.

In the case of such a joint, it is first necessary to completely make the joint in detail, and the gallery temporary must be machined to appropriate dimensions. Moreover, due to tolerance issues, accurate mounting and drilling of metal plates is only possible at the construction site.

Otherwise, in the event of a joining error, the load transmitting member (in this case the set screw) disposed perpendicularly to the four metal plates within the beam will be unequally stressed.

Therefore, creating such a joint requires a great deal of effort. A particularly big problem is that a great deal of difficult work is required on the construction site, and the creation of joints makes what is actually an inexpensive wooden building expensive.

When beams are butt-jointed and the transmission of tensile loads occurs between them, it is known to drill aligned holes in the ends of both beams and glue the screws through threaded pins into the holes. ing. However, a tension force is generated at this contact portion that prevents the load from being evenly transmitted.

Furthermore, this type of bond is not aging resistant. If cracks occur, the load transmission ability will be significantly reduced.

In view of the problems of the known technology as described above, the present invention has a design,
The problem relates to the problem of providing a load-transferring wooden joint that minimizes the effort required to make and assemble it on a construction site.

In order to solve this problem, according to the present invention, instead of the above-mentioned Kanagawasaka, a cavity is provided on the surface of the beam main body, and a dowel is fitted into the cavity. This dowel has push-in load transfer members arranged at right angles to the dowel body, which spring out when the dowel is inserted into the cavity. These elements transmit the tension applied to the dowel to the beam, similar to known metal plate set screws.

The upper limit of this tension is determined by the size of the cross-sectional area of the dowel body, since there are no architectural constraints on the length of the dowel and, therefore, on the number of load-transferring members.

The assembly of such a dowel simply involves creating a recess on the beam using a drill or cutting head. Simply insert the dowel body into its recess and finally push out the load transfer member the required distance to enable load transfer between the beams.

A particular advantage is that in sawmills or plywood beam factories, the dowels can be inserted into the beams when cutting them to the appropriate size, and at the construction site it is only necessary to check the joints for breakage. It is. In this way, the amount of work at the construction site can be reduced.

The dowel according to the invention can be manufactured in various sizes and configured to suit a given maximum load. Therefore,
In the production of Zipel, only the problem of selecting the appropriate strength remains. There is no longer a need to create joints for each joint as in the past.

There are a number of manufacturing problem solutions that are preferred for the dowel and load transfer member designs of the present invention. For example, the load transmitting member may be a toothed or barbed member designed so that when tension is applied to the dowel, this member pops out and wraps around the dowel separately to a position perpendicular to the dowel and is fixed at that position. It's okay.

In one embodiment of the invention, the zipel body is hollow and has a plurality of openings arranged on its sides. The load transmitting member is a pin arranged to fit into the opening, so that when the bottle is in the final position where it protrudes outward, the inside of the opening, that is, the inside of the zipper, supports the bottle in that position. The load is therefore transferred to the wall of the hollow zipper body through the bottle and the opening.

In the unextended position of the pin, the inner end of the vial lies within the cavity of the hollow dowel and the outer end of the core pin extends outwardly into the opening. The outwardly directed end of the pin does not protrude from the outer surface of the dowel body so much as to interfere with insertion of the dowel into the timber cavity.

Gibels of this design are simple to manufacture and have a high load carrying capacity, which remains virtually unchanged even as the beams on which they are mounted age and develop cracks. This is because even if a crack occurs at the location where the pin is installed, it will not affect the load transmission capacity of the pin in any way because the pin protrudes to its final position inside the wood on the outside where it will not be reinforced.

According to one embodiment of the invention, the bin is fixed in its final position and is designed so that it does not return to its original position in the dowel cavity, even under alternating loads or vibrations, for example.

Preferably, the dowel body has a circular cross section and the pins are tubular bodies extending radially from the dowel. However, if the beams to be joined have a thin cross-section, the cross-section of the dowel may also have a thin shape, for example an ellipse. In this case, it may be desirable to place the bin only at the end or small side of the dowel body.

Also, the cross section of the bottle may be square or rectangular.

In this case, load transmission can be maximized by arranging the pin so that one side is oriented perpendicular to the direction of tension. However, according to one embodiment of the invention, it is advantageous if the bottle cross section is circular and the outer edge of the bottle is sharpened to facilitate penetration of the bottle into the wood.

In other words, it is particularly easy to create a bottle with such a shape and form a hole to fit it, and although there is a limit to the number of bottles that can be attached depending on the cart capacity of the cross section of the dowel body, the length of the dowel body can be determined in principle. is essentially unlimited, so some reduction in load carrying capacity due to this shape of the bottle is not a significant problem. In particular, the local load on the outer wall of the dowel body is reduced around the opening, and the load carrying capacity of the dowel of the invention as a whole is increased.

According to one embodiment of the invention, the pins are provided in at least one row parallel to the longitudinal axis of the zipel body.

Due to this design, even if the distance from the edge of the dowel to the side of the beam is small, it is possible in the case of the present invention to insert the dowel reliably so that the bottle does not protrude outwards.

When a plurality of rows of pins are provided, it is advantageous to arrange the pins in adjacent rows in a zigzag pattern in the longitudinal direction of the dowel so as not to impair the strength of the wall of the dowel body.

It is also customary to glue and fix each pin corresponding to the opening in the dowel body in its initial position from the outside using an adhesive that does not harden. After inserting the dowel into the corresponding hole in the beam, the adhesive action of the adhesive holding the pin in place is broken and the pin/dowel is inserted.
All you have to do is apply high hydraulic pressure to the hollow part of the novel to push it out like a piston. However, in this case, even if the applied pressure is uniform, the resistance against each pin inside the wood is different, and therefore the pins do not protrude evenly into the wood, which is a drawback. In order to eliminate this drawback, in another embodiment of the invention, the inner ends of the bolts are attached to internal webs arranged longitudinally of the dowel in each row. This internal web positions the pins as they are pushed out, and helps ensure that each pin is reset to its optimal final position.

Basically, it is possible to place the bottle in the protruding position simply by pressing the bottle against the inner wall of the zipper without fixing the bottle to the longitudinal web. However, as a quick and cost-effective way to place a pinot in a dowel, another embodiment of the invention is to weld the bottle rigidly to a longitudinal web, which is then attached to the hollow part of the dowel. By inserting the bottles so that they are opposed to each other in the corresponding openings, the bottles can be easily arranged.

In another embodiment of the invention, the openings of each row are connected on the inside by a groove and are designed to receive a corresponding longitudinal web within the groove. Conversely, each longitudinal web is supported within an internal groove to facilitate load transfer.

In another embodiment of the invention, each longitudinal web is welded to the dowel body at an outer position, and the dowel body is permanently fixed to the beam.

Another embodiment of the invention provides an expansion member for pushing out the pin. The expansion member is inserted into the hollow part of the dowel to force the pin into the extended position.

The expansion member may be composed of multiple parts to provide the expansion effect and to be withdrawn from the dowel cavity after the bottle has been pushed into its final position. In another embodiment of the invention, the expansion member is a pointed insertion pin, upon insertion of which the sloping surface of the insertion pin/point presses against each load transfer pin or longitudinal universal web. Since the inserted expansion member remains in place, the bottle is not pushed back to its original, eg, initial position.

According to another embodiment of the invention, at least one portion of the novel 2I body is internally threaded to provide for a load-transfer connection pin/gear connection for assembly.

The internal thread may be provided within the dowel at the location of the aforementioned load transfer pin. In this case, the design must be such that the screw engagement of the connecting pin does not occur when the pin is in its final position. In another embodiment of the invention, the load transmitting portion of the dowel body with the opening and the opening is internally threaded! , 14 counties are advantageously designed. If the novel is screwed to the end face of the beam, only one end is required. In another embodiment of the invention, advantages may be found in a coupling design in which the bell has counter-rotating threads at both ends thereof. Therefore, when the end faces of two beams are brought together and joined together with a large tension, the dowels are assembled so that the threads mt of both sides cut in opposite directions on the dowel are engaged. A tightening bolt may be provided on each threaded portion between the end faces of the beam so that it can be tightened just like a tightening bolt on a winder. , After the introduction bolt is tightened, the gang will need to be blocked with a stick, etc. The dowel according to the present invention is installed perpendicularly to the beam, with both ends of the dowel protruding from the surface of the beam. is also possible.

In this method, the load transfer bins are placed opposite each other through the beam. By welding or screwing a load transmission bolt of appropriate size to the shivel body, a joint with high tensile strength and lateral mechanical strength can be obtained.

In another embodiment of the invention, the end of the insertion bin is provided with an external thread that engages with the internal thread described in -2.

The insertion pin is screwed into a hollow part within the dowel book through a suitably shaped member such as a hexagonal socket, and the load transmission effect of the threaded part forces the load transmission pin apart. When the insertion pin is placed in the insertion position, the load transfer pin is screwed into the internal thread. In this way, the insert bin and the cart transmission bin are tightened together, resulting in a long-lasting connection that will not come loose even when the wooden joint is subjected to impacts or similar influences.

The insertion pin may have a shank at its end extending beyond the end of the dowel after the load transfer pin is pushed out.

If it is necessary to strengthen the threaded part, spot welding,
Adhesion or similar methods may be used. The insertion pin shaft portion constitutes a load transmission bin.

In another embodiment of the invention, the end of the zipel body has the same horizontal plane as the hollow beam body. This offers the advantage, as previously mentioned, that the dowel can be assembled in the factory so as to solve the transport problems caused by the dowel protruding from the beam end. The outwardly open cavity of the dowel may be closed with a threadedly engageable synthetic plug or the like.

It is also possible in principle to make the dowel protrude from the cavity in the beam and to impose the role of a load transmission pin on the dowel.

As already mentioned, the cross section of the internal dowel is determined according to the cross section of the beam to be joined. However, especially when the joint surface is large, it is advantageous to arrange a plurality of dowels in parallel. In this case, the dowel also has the advantage of being able to produce standard gold in large quantities at low cost.

The dowel of the invention, unlike the prior art joints mentioned at the outset, is particularly suitable for making joints that do not rely on welding. According to the present invention, there is provided a hollow tube with a polygonal cross section having a number of faces corresponding to the number of beams joined at the joint,
The width of the hollow tube is determined according to the width of the end of each beam. A plurality of holes are drilled into each side of the polygonal hollow tube where the load transfer bins or projecting dowels extend beyond the ends of the beams. The pins or zipels are welded to each other and to the polygonal hollow tube from the inside of the hollow tube.

In the case of genuine wooden joints, high precision is not required when forming the opening in the polygonal hollow tube. This is because it is possible to correct undesired openings during welding. The polygonal hollow tubes are fully perforated at the factory and the joint can be formed at the construction site by simply threading the coupling bolts into the dowels, each having a dowel with a protrusion, if necessary. The beam is placed inside the polygonal hollow tube, and finally welding is performed from the inside of the hollow tube. The welding operation is performed from the relatively wide upper part of the hollow tube. 5 depending on the wall of the hollow tube! ￥￥￥￥￥￥￥￣￣￥￥￥￥￣￥￢￥￥￥￥￣￥￢￥￥￥￥￱￥￥￥￥￱￥￥￥￥￥￥￡￡￣ｮｮｮ￥￥￥￥￥￥￡. Work such as financial cutting is not necessary at the construction site.

If the transmitted load is small, the polygonal hollow tube can be omitted, and in this case, the projecting ends of each dowel are designed to be sized so that they touch each other when the beams are brought together and can be directly welded.

The present invention relates to joining two or more pieces of wood by means of a dowel and to a method for making such a wooden joint as well as the dowel body. The method of making consists of tightening at least the area of the load-transferring member of the dowel on the timber body in the mill. In this case, this tightening operation is performed when the load transfer member is spread apart to prevent the wood from splitting. During the process of crimping the layers of wood to form a bond, the process of crimping the wood itself forces the load transfer member according to the invention apart.

According to an embodiment of the invention, when the clamping pressure is applied to the wood, the insertion pin is inserted into the dowel under the action of hydraulic pressure, in which case the insertion pin acts as a hydraulic piston. Alternatively, press the hydraulic piston against the head of the insertion bottle.

However, in an alternative embodiment, the load transfer pinot is forced apart under the action of a pressure wave by thermite welding and simultaneously welded to the novelty at that temperature.

The invention further relates to a method for making a joint which closes both sides of a polygonal hollow tube by inserting and welding the projections of the connecting dowel. Not only is the present invention a particularly superior stress-free welding method, but the overall amount of heat required for the welding process is small compared to other welding methods, despite the high temperatures that occur during welding. Therefore, it has the advantage that only a small thermal reaction occurs to the surrounding wood. Furthermore, there is no need for troublesome upward welding.

Finally, Termisoto welding can be done by semi-skilled workers.

As described above, delicate components in wooden buildings such as joints can be assembled in an extremely short time without having to perform individual work on the construction site or additional installation work. It is possible to do that.

The real deal! ! The features above make a major contribution to reducing construction costs and shortening construction work time.

In the above explanation, in the case of a wooden joint, the load transmitting member that transmits force to the structure connected to the joint is formed.

However, instead of a tubular dowel, a simple Kanagawa strip with high tensile strength and having pins arranged in a measured row may be used. In this case, the money 1. It is preferable to make the green part of the ftIi piece obtuse or sharp like a blade.

This type of metal strip is inserted into the cavity together with the attached pin. The length of the metal wire corresponds to the surface diameter of the cavity, and the pushing tool is inserted between the pin-free surface of the metal wire strip and the cavity. Insert it between the opposite wall and push the pin into the inner wall of the cavity in the radial direction.

These pins are preferably hollow.

Since the force transmitted by the pin is transmitted through the metal strip, the material and dimensions of the metal strip must be selected appropriately.

At the opening of the cavity, the metal strip is connected to a load transmitting member, from which force is transmitted, like the previously described dowel.

The advantage of this design is that there is no need for a bell that requires a relatively elaborate construction, and that the metal strips reinforced by pins are radially pressed against the inner wall of the cavity, which improves the shape and transmission of the wood containing the cavity. This means that the choice can be made depending on the magnitude of the load being applied. The number of goldwood strips is also determined in accordance with the magnitude of the force to be transmitted. The result is a high degree of versatility, which is particularly needed in architecture.

Although it is possible to arrange the metal strips close together, it is preferable that the metal strips in the cavity are spaced apart from each other along the outer periphery.

In order to prevent the metal strips from bending toward the center of the cavity due to the action of the load, after inserting each metal strip, a support member is inserted or more preferably press-fitted into the cavity so as not to constitute an obstruction. It's good to do that.

This support member may be a rigid wooden rond or a steel tube. If necessary, the support can be glued to the inner surface of the radially arranged metal strip, in which case the load transmission also takes place via this glue.

It is also possible to create a load transmitting member by bonding strips to the gold using a method such as thermite welding to the support member with the holes fully drilled. However, it is preferable to save the necessary load-transferring member by joining a linog to the end of the metal piece located at the opening of the cavity. The glue/glue can be welded to the gold in strips, for example.

However, an annular body having a protrusion at the end of each metal strip on the side from which the pin protrudes and has a groove on its inner periphery in which the protrusion on the metal strip engages. Designed as.

According to one embodiment of the invention, this annular body is inserted into the enlarged diameter of the opening of the cavity, the upper surface of which is flush with the outer surface of the timber. During the closing work, this annular body is inserted first, each gold accent strip is inserted and crimped one after another, and the projections and the inner grooves of the annular body are secured during crimping and rotation. conduct. The support member inserted next extends to the protrusion so that the metal strip does not bend inside the cavity.

In order to engage a connecting bolt which is connected, for example by welding, to the hollow part of the joint, it is desirable to cut an internal thread on the open side of the collar.

Figure 1 is reduced to 2.5 times the actual size, Figures 2 to 6 are reduced to 1/2 the actual size, and Figure 7 is reduced to 2.5 times the actual size.
An embodiment of the joint of the present invention is shown in double magnification.

FIG. 1 is a schematic representation of the end of a beam 1 made of plywood, and FIG. 2 shows its rectangular cross section.

Two dowels 2 are arranged on the end face of a plywood beam 1 coaxially with respect to its longitudinal direction and symmetrically with respect to each other in its cross section, and the dowels have an outer diameter of 42.4 mm and a thickness of 8 m. Made from seamless steel tubing.

On the inside of the steel pipe section of the dowel, six grooves 8, eight inches wide and four deep, extending three-quarters of its total length, run at equal intervals from the left side of the steel pipe section (as viewed from Figure 1). There is.

An internal thread 7 is cut into the end of the dowel body 3 on the end face side of the plywood beam 1, and the internal thread extends close to the end of the groove 8.

The groove 8 is communicated with the outer wall of the dowel body 3 by equally spaced holes drilled along its entire length, into which a circular bottle 4 with a diameter of 6 m is inserted. The total length of each pin 4 is 20 degrees, and the groove facing the inside of the dowel body 3 of the bottle is 1flii.
Since it is on the same 3F/plane as the hole, pin 3 is about 1 inch outward.
2 pots are sticking out.

The method of inserting the name bottle 4 is that the bottle 4 is neatly similar to the direction determined in it! It is designed to be used.

The outer edge of each B/4 is pointed.

The inner end of each pi/4 is a truncated circular pi 1. It is formed into a shape and welded into a suitably drilled hole on the elongated web 5. The longitudinal webbing 5 is dimensioned to fit into the groove 8 when each bottle 4 is pushed out of the dowel body 3 (the position shown in FIG. 1).

The pin 4 may be attached to the longitudinal web 5 by means of a rivet. In FIG. 2 and FIG. 7, the operator direction web 5 is omitted for the sake of simplification.

The dowel 2 is made so that it can be assembled by the method described below. Each pin/4 is welded via its inner truncated conical portion to a corresponding hole or portion of the vertical web 5 to form pin temporary 5, 4 as shown in FIG. 1st
As shown in the figure, six pin plates 5 and 4 are inserted into the dowel body 3, and the tip of each pin plate 4 is housed in a corresponding size on the wall of the dowel body 3. When inserting the last of the pin plates 5, 4 into the cavity of the Zipel main body 3, it is necessary to press the adjacent pin plates 5, 4 that have already been inserted against the inner wall of the cavity as shown by the dotted line in Fig. 7. . After all the pins/plates 5, 4 are inserted, they take the position shown by the solid line in FIG. Further, as shown in FIG. 7, each longitudinal web 5 has both inner edges thereof trimmed so that it is flush with the adjacent longitudinal web 5 when in the assembled position shown in the figure.

In the assembled position shown in FIG. 7, the two vents 2 are inserted into holes with a depth corresponding to the length of the dowel at the end of the plywood beam 1.

After inserting the bell 2 into the hole, the end of the plywood beam 1 shown in the figure is tightened to prevent the wood from splitting when the pin 4 is pushed out. Next, the insertion pin 6 shown in FIG. 3 is inserted into the cavity at the free end of the gib valve main body 3 with its pointed end first, and pressed into the position shown in FIG. 1 using a hydraulic piston or the like. Due to this press fit, the insertion pin 6 fully presses the longitudinal web 5 and does not push out the bottle 4 which is welded to it. The pin 4 fixes the dowel 2 in the plywood beam 1 with a large tensile force by passing its sharp tip through the timber surrounding the hollow 1 of the dowel 2.

Since the insertion pin 6 remains at this insertion position, the pin 4 will not return to its original position within the bell 2.

The length of the dowel 2 and the number of pins 4 are determined on the basis of the tensile load to be transmitted 3. In the example shown (bow, the cross-sectional dimensions of the composite beam l are 14X.+81:Im).

The total length of the dowel 2 is 4QCm, and the length of each longitudinal web 5 is 3Qcm. 1.6 longitudinal webs 5 each having 4 ten bins 3 cm apart are arranged in the dowel body 3 at an angle 1b1 with respect to each other.

As shown in FIG. 2, the two dowels 2 are arranged 15 degrees apart from each other, so that the distance between the tips of adjacent pins 4 between the two dowels 2 is as large as possible. .

When the center angle of the tip of the insertion bottle 6 is 60 degrees, a) Q, dowel 2
The tip is rounded to prevent it from hitting the bottom when pushed into the cavity.

The inner thread 7 is a right-hand thread or a left-hand thread. Similarly, Jibel 2
You may also cut a thread on the other end.

The groove 8 may be provided across the inner thread 7 and over the entire length of the zipel body 3.

A beam 1 made of plywood equipped with two dowels 2 has a projecting pin that engages with an internal screw 7, and other similar beams 1 with similar projecting pins either directly or through a hollow member between them. The joint may be constructed by welding to. Furthermore, the illustrated beam 1 is butted against another beam L having internal threads 7 with different threads on the left and right sides, and concentric trunnions are formed at each of the opposite ends thereof, the threads being oppositely threaded on the left and right sides.・It is also possible to join via a bearing. In this case, the concentric trunnions can be threadedly connected to the internal threads 7 engaging on both sides with just one rotation in the same direction.

The material used is steel or a suitable alloy. Materials suitable for thermite welding, especially aluminum alloys 1ff17FI
口tN+ri (1; 11/\ku2ノ is desirable.

FIG. 8 shows another embodiment of the bell of the invention. In this embodiment, the above-mentioned dowel main body 3 is not required.

As is clear from the figure, there is a cylindrical cavity 10 in the first wooden beam 1.
can be opened. The cavity 10 has an enlarged diameter section l4 at its opening.
has.

A manufactured pin plate 9.4, described below, is inserted into the cavity 1o.

A row of cylindrical hollow pins 4 are arranged on one side of a metal strip 9 having an accurately rectangular cross section. Each hollow bottle 4 is perforated and counterbored from its free end, so that the periphery of the tip forms a sharp blade.

These hollow pins 4 are each mounted on the surface of the metal strip 9 at regular intervals by welding or other means.

In the case of attachment by welding, the width of the metal strip 9 need not be greater than the diameter of the hollow bottle 4.

The gold strip 9 is made of high quality tool steel so that it will not be damaged by the transmission of forces.

Hollow pin 4'fr. When the attached metal strip 9 is inserted into the cavity 1o, there is enough space between the surface of the metal strip 9 without the hollow pin/4 and the facing inner wall of the cavity 10 to allow the pressing tool to be inserted. The length of the hollow bottle 4 is designed so that it can be removed.

The pressing device consists of two guide side members which are applied against the wall of the cavity 10, and the gap between the guide side members causes the metal piece 9 to be moved radially outward. When a wedge or similar tool is inserted between the guide flank and the wall of the cavity 10 and the back side of the metal strip 9, the hollow pin 4 is pushed into the beam l. The edge of the hollow bi/4 has a sharp blade, so it won't break the wood.

If the tip is conical, the wood may split.

A steel ring 1 with a groove on its inner circumference before inserting the metal strip 9
Fit into the 3'jz enlarged diameter section 14. The free end of each metal strip 9 has an outwardly directed protrusion 12'ff that fits into the inner circumferential groove:
have The inner circumferential groove and the protrusion 12 may each have a rectangular or serrated cross section.

Due to its shape, the design is such that no undesirable radial forces occur during load transfer.

All the bottle plates 9, 4 are inserted one after another into the cavity 10, and after the protrusion 12 is fitted into the inner circumferential groove of the ring 13, the supporting member 11 (in this embodiment, a relatively thin wall) is inserted. thick steel pipe)
is inserted into the cavity 10. A free space may be provided between the support member 11 (the steel pipe) and the back surface of each metal strip 9. With this design, the support member 11 has a metal strip 9,
From then on, the ko-shichi spins and falls away from the wall of cavity 10 without receiving any force. The support member 11 and the metal strip 9'ff may be joined with adhesive.

A retaining part 15 with a thread cut on the outlet side end of the steel plate 13
may be provided. The steel link 13 has an inner diameter that does not hinder insertion of the support member 1l.

Naturally, the depth of the enlarged diameter portion 14 is adjusted with the length of the steel shield 13 so that its outer surface is flush with the end surface of the beam 1.

As shown in the illustrated embodiment, the present invention relates not only to the entire sliding structure but also to each part, particularly the bottle plate.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a beam with a wooden joint made of two dowels according to the present invention, Fig. 2 is a sectional view taken along line I-11 in Fig. 1, and Fig. 3 is a sectional view of the beam shown in Figs. Figure 2 is a diagram of the push-in bin of the novel, Figure 4 is a diagram of the bin plate of the novel in Figures 1 and 2, Figure 5 is a sectional view of the push-in bin of Figure 2,
FIG. 6 is a partial sectional view of the bin plate in FIG. 4, FIG. 7 is an enlarged sectional view of the sopel taken along the line Longitudinal cross-sectional view. 1... Beam 3... Bell body 4... Bin 5... Longitudinal web 6... Push-in screw/7... Inner screw 8... Groove 9.
-Supporting member 10...Cavity 11...Supporting member] 2...Protrusion 13...Steel ring 14...Enlarged diameter portion 2=. -,・Yuun・,L-105- Procedural amendment (voluntary) July 17, 1980 Manabu Shiga, Commissioner of the Patent Office 1.73 indications 1982 Patent Application No. 103801 2. Name of invention Wooden joint for load transmission 3. Person making an amendment Related to the case Patent applicant address 8371 Prackenbach, West Germany. Tafeluppelkstrasse 5 Name Beterbeltsche Nationality West Germany 4. Agent address: 105 Address: 3rd floor, Daini Suzuki Building, 1-21-8 Nishi-Shinbashi, Minato-ku, Tokyo'
"'" F (580) 72561t, S Hiro name (8500
) Patent attorney Kazunobu Sera 5. Subject of amendment (1) Drawings (engraved, no changes in content) (2) Power of attorney and translation (3) Priority certificate and translated translation of the cover page 6. To the correction details) 8"1"+lt"'・(hair, 哩)

Claims (1)

Claims: (1) at least one rectangular joint body inserted into a cavity of circular, oval, or other geometric cross-section in the timber;
In a load-transferring wooden joint having a plurality of load-transferring members held in the joint body and extending into the timber at right angles thereto, the load-transferring members 4 extend from the initial position upon insertion into the cavity into the timber 1. A wooden joint for transmitting a load, characterized in that it moves approximately radially to a final position passing through the joint. (2) The wooden joint for load transmission according to claim 1, wherein the joint body is formed as a dowel body 3, and the load transmission member is recessed into the dowel body 3 at an initial position. . (3) The novel main body 3 is a hollow body having a plurality of openings in the wall thereof, the load transmitting member is a pin 4 movably fitted in the opening, and the inner end of the bottle is A load-transmitting wooden joint according to claim 2, characterized in that it projects into the cavity of the novel body when in its initial position. (4) The wooden joint for load transmission according to claim 3, characterized in that the pin 4 can be fixed in the final position. (5) The zipper body 3 is characterized in that it has a circular, rectangular, or other shaped cross section.
The wooden joint for load transmission according to item 1 or 4. (6) The wooden joint for load transmission according to claims 3 to 5, wherein the pin 4 has a circular cross section and a pointed outer end. (7) The bins 4 are arranged in at least one row parallel to the longitudinal axis of the zipper body 3,
A wooden joint for load transmission according to claims 1 to 6. (8) A wooden joint for load transmission according to claim 7, characterized in that the inner ends of the pins (4) of each row are attached to a longitudinal web within the core of the zipper body (3). (9) A wooden joint for load transmission according to claim 8, characterized in that said pin 4 is welded to a hole in said longitudinal web. αQ The openings of the dowel body 3 are connected on the inside by a groove 8 for each axial row, which groove 8 is designed to receive the longitudinal web 5. The wooden joint for load transmission according to item 8 or 10. 12. A load-transmitting wooden joint according to claims 8 to 11, characterized in that the longitudinal web (5) is welded to the zipper body (3) in the final position. A load transmitting device according to claims 3 to 11, characterized in that it comprises an expansion shell inserted into the hollow of the zipper body 3 in order to move the bottle 4 to the final position. wooden fittings. [alpha]a Wooden joint for load transmission according to claim 12, characterized in that the extension device is designed as an insertion pin 6 of tapered shape, in particular with a flattened tip. ．． The novel body 3 has an internal screw 7 at least on one end thereof.
A wooden joint for load transmission according to claims 3 to 13, characterized in that it has: (15J The wooden joint for load transmission according to claim 14, characterized in that the end portion of the novel body 3 where the internal thread 7 is cut is adjacent to the load transmission portion having the opening. ) The inner thread 7 of the zipper body 3 extends into the load transmitting part.
Wooden joints for load transmission as described in section. 17. The wooden joint for load transmission according to claim 14, wherein the two ends of the two joint bodies connected to each other have screws (7). 18. A wooden joint for load transmission according to claims 14 to 17, characterized in that the ends of the two QBI joint bodies both have internal threads 7 with left and right opposite threads. ◇ characterized in that the push pin 6 has an outer thread that engages with the inner thread 7 of the joint body;
A wooden joint for load transmission according to claims 13 to 18. characterized in that the pushing pin 6 has a shank, which shank extends beyond the end of the dowel body 3 when the pin 6 is being pushed into the final position; A wooden joint for load transmission according to claim 19. (21) A wooden joint for load transmission according to claims 2 to 20, characterized in that an end of the dowel body 3 is flush with the hollow timber 1. (a) Claims 2 to 21, characterized in that the plurality of joint bodies are arranged parallel to each other.
Wooden joints for load transmission as described in section. (c) The load transmission element, which is designed in particular as a pin 4, is attached to a rigid metal strip 9 extending in the longitudinal direction of the cavity 10 and is pressed radially within the cavity 10. , a support portion 11 extending toward the inner surface of the metal strip 9 is disposed in the protrusion 10, and a load transmission via is attached to the metal strip 9 to constitute the joint body. A wooden joint for transmitting grape weight according to claim 1. The wooden joint for load transmission according to claim 23, characterized in that the metal strips 9 are arranged at equal intervals along the outer periphery. (c) Claim 23, characterized in that the support member is a solid wooden rond or, in particular, a steel tube.
The wooden joint for load transmission according to item 2 or item 24. (4) The load transmission member is an annular body having an external thread 15 attached to the metal strip 9 and extending close to the outside of the cavity 10. A wooden joint for load transmission according to items 25 to 25. (b) The cavity 10 has an enlarged diameter part 14 at its opening, and the nuchal body 13 is inserted into the enlarged diameter part 14 so as to be flush with the end of the cavity 10, and Patent claims characterized in that the break 13 has an inner circumferential groove and the metal strip 9 has at its end a radially outwardly extending projection 12 which engages with the inner circumferential groove for load transmission. A wooden joint for load transmission according to items 23 to 26. Claims 1 to 5 are characterized in that a joint is formed by abutting the end faces of a plurality of beams, and the side surface of the pipe body is brought into contact with the end face of the beam and welded to the joint body. The wooden joint for load transmission according to item 16 or items 18 to 27. (4) The side wall of the pipe body extends beyond the end of the beam and is connected to the joint body by a portion T! 29. A load-transferring wooden joint according to claim 28, characterized in that it has a hole passed through, the parts being welded to each other and to the tube inside the tube.