JPH07167121A - Joint structure and manufacture thereof - Google Patents

Abstract

PURPOSE:To strengthen a bending part or a joint part, improve shock absorbing performance, and reduce weight, by constituting a joint structure for joining members having various sectional shapes together so that a composition composed by use of a braider is set as a core body, and it is hardened by means of resin. CONSTITUTION:This joint structure is to join members having various sectional shapes together. In this case, the joint structure is constitute so that a composition composed by the use of a braider is set as a core material and it is hardened by means of resin. In manufacturing the joint structure, at first the composition is impregnated with resin, next the composition is molded, and thereafter the resin hardened. Forms of I letter h1'-h3' are inserted into respective openings h1-h3 of a composition H composed into T letter, for example, the composition is impregnated with thermoplastic resin, and it is pressed along the respective forms h1'-h3'. Thereafter by heating the composition H, a hardened joint structure H' is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for joining members having various sectional shapes such as a rectangular shape, an I shape and a T shape, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a joint structure manufactured by bending a metal plate or the like, cutting and joining a tubular body, injection molding a synthetic resin, or the like, and various manufacturing methods of such a joint structure are known. Are known.

[0003]

Metal joint structures have problems such as weight and corrosion, and, for example, in the case of a T-shaped joint structure, the metal joint structure and the horizontal portion of the T-shaped joint structure are different from each other. There is a problem that the joining work with the vertical portion is required and the strength of the joining portion is reduced.

Although a joint structure made of synthetic resin can be mass-produced, it has a problem in strength, and in particular, it has poor impact absorption performance and is fragile. In order to solve such a drawback of the synthetic resin joint structure, there is known a method of manufacturing a joint structure from so-called fiber reinforced plastic with glass fiber or carbon fiber interposed, but the glass is known. There is a problem in terms of productivity due to the manual work of laminating fibers or carbon fibers, and in the case of the T-shaped joint structure as described above, the strength of the joint part is reduced, If more fibers are used in the joint portion in order to secure the strength of the portion, there are problems that the joint portion becomes thicker and the weight increases.

An object of the present invention is to provide a joint structure and a manufacturing method thereof that can solve the problems of the conventional joint structure and the manufacturing method thereof.

[0006]

In order to achieve the above-mentioned object, the present invention provides a joint structure which is cured with a resin having a core material of a composition composed by a braider, and a braider. After the composition is formed by, the composition is impregnated with a resin, and then the composition impregnated with the resin is molded, and the resin is cured to produce a joint structure.

[0007]

EXAMPLES A T-shaped joint structure and a method for manufacturing a T-shaped joint structure will be described below as examples of a joint structure and a method for manufacturing the same according to the present invention, but the present invention is not limited to the T-shaped joint structure. No, I type, H type, Y
It is possible to manufacture various types of joint structures such as a shape, a cross shape, and a tetrapot shape, and the present invention is not limited to this embodiment as long as the gist of the present invention is not exceeded.

First, FIG. 1 is a front view of a braider for an example of a braider that composes a T-shaped composition of the embodiment (this composition will be a preform for manufacturing a joint structure). 2 and a side view thereof.
Will be used to outline the overall configuration and each device that constitutes the braider. In addition, in FIGS. 1 and 2 and FIG. 3 described later, the rectangular portion shown by the dotted line above the bobbin carrier C is shown by omitting the yarn guide portion c3 described later.

The braider BR comprises a braider body Bb and a mandrel device Bm. The braider body Bb is formed in the curved upper plate U and the upper plate U having a predetermined radius of curvature R, which is arranged in a substantially cylindrical machine base Fb having a horizontal axis and an opening e on one side. The bobbin carrier C traveling along the orbit, a drive device D for traveling the bobbin carrier C along the orbit, a composition position stabilizing guide member G, and the like, and the mandrel device Bm is a machine base Fm and mandrel. It is composed of a moving device M.

The above-mentioned devices and members will be described below. First, mainly using FIG. 3 which is an enlarged front view of the drive device D for causing the bobbin carrier C including the I-I cross section of FIG. 2 and FIG. 2 to travel along the track, the upper plate of the braider body Bb is used. A drive device D for causing the U and the bobbin carrier C to travel along the track will be described.

As shown in FIG. 2, the curved upper plate U is arranged at a predetermined interval in a substantially cylindrical machine frame f1 arranged in a substantially cylindrical machine stand Fb. It is attached by appropriate fixing members f2 and f2 ', and a known track is formed in the upper plate U in the circumferential direction. A hollow bolt f3 is attached to the machine frame f1 by a nut f4. A gear d1 is fitted to the hollow bolt f3 via an appropriate bearing f5. The gear d1 has a bobbin carrier which will be described later on its upper surface. An impeller d2 having a groove into which the engagement shaft c1 of C is fitted is fixed so as to rotate integrally with the gear d1.

Y is a yarn which is unwound from the bobbin placed on the bobbin carrier C and heads to the composition point P on the mandrel m supported by the mandrel device Bm.
y is unwound from the bobbin carrier C arranged substantially horizontally in the frame Fb ′ of the machine stand Fb having a substantially cylindrical shape,
After being guided by the guide roller f6 attached to b at a substantially right angle direction and inserted into the hollow bolt f3, the yarn for the middle thread or the reinforcing thread (hereinafter, simply referred to as "medium") toward the composition point P on the mandrel m. It is referred to as "thread for yarn").

The gear d is driven by a suitable driving means such as a motor.
By rotating 1 to rotate the impeller d2,
The engagement shaft c1 of the bobbin carrier C fitted in the groove formed in the impeller d2 is moved to move the bobbin carrier C along the track. As described above, by moving the bobbin carrier C along the track formed in the curved upper plate U, a large number of yarns Y are formed.
To form the composition on the mandrel m of various shapes, and, if necessary, from the bobbin carrier C arranged in a substantially horizontal shape on the frame Fb ′ of the machine base Fb to the yarn for middle thread. The yarn y is unwound from the bobbin carrier C traveling along the track to be entangled with the yarn Y to form a composition.

As shown in FIGS. 1 and 2, the bobbin carrier C is arranged along the track formed on the peripheral surface of the curved upper plate U and is placed on the bobbin carrier C. The yarn Y drawn out from the formed bobbin in the axial direction of the bobbin is configured to gather at the center of the curved upper plate U. The position of the mandrel m is controlled so that the composition point P of the composition formed on the mandrel m attached to the mandrel moving device M described later is located at the center of the curved upper plate U. To be done.

Next, the bobbin carrier C will be described with reference to FIG. 4, which is a front view of the bobbin carrier C. In FIG. 4, c2 is an upper flange, and the upper flange c
2, a mast c4 having a U-shaped cross section and a spindle c5 in which a yarn guide portion c3 is rotatably arranged at the tip end are provided upright. A bobbin c6 around which the yarn Y is wound is inserted and attached to the spindle c5, and a fryer c8 having a bearing c7 is rotatably fitted to the tip end of the spindle c5.

The tip of the spindle c5 is provided with a slit (not shown) extending in the vertical direction, and a pair of hook members c9, c having a substantially triangular tip is provided in the slit.
9'is arranged, and the lower ends of the hook members c9, c9 'are pivotally supported by a shaft (not shown) attached to the spindle c5. The hook members c9, c9 'are constantly urged in directions away from each other by an elastic member such as a compression spring arranged between the hook members c9, c9', and the bobbin c6 or the flyer c8 is hooked on the hook members c9, c9 '.
The hook members c9, c9 'are rotated in a direction in which they approach each other when they are inserted into the bobbin c6 or the flyer c8 so that they can be mounted on the spindle c5. Bobbin c6 or flyer c8 is spindle c5
When mounted on the bobbin c, the hook members c9, c9 'are expanded in a direction in which they are separated from each other by an elastic member such as a compression spring.
6 or the fryer c8 is configured so as not to come out of the spindle c5.

Reference numeral c6 'is a cylindrical bobbin cover, which is attached to the upper flange c2. The cylindrical bobbin cover c6 'is wound around an adjacent bobbin when the yarn Y wound around the bobbin c6 is pulled out or droops when the bobbin carrier C is inclined or positioned upside down. This is to prevent troubles such as being entangled with the thread that is present or entangled with other members of the braider.

A tension washer c11 and a guide roller c1 are arranged in this order from the bottom on the substantially U-shaped frame c10 of the yarn guide c3 arranged at the tip of the mast c4.
2. A slack eliminating member c13 and a guide roller c14 are arranged. A guide portion c15 having a guide roller c15 'is attached to the tip of the slack eliminating member c13, and the other end of the slack eliminating member c13 has a coil spring c.
One end of 16 is attached, and the coil spring c16
The other end of is attached to the frame c10. The slack eliminating member c13 is pivotally supported on the frame c10 via a shaft member c17 ′ attached to a bearing member c17 arranged on the frame c10, and is always counterclockwise in FIG. 4 by a coil spring c16. It is biased to rotate. Therefore, when the yarn Y unwound from the bobbin c6 becomes loose, the slack eliminating member c13 rotates counterclockwise around the shaft member c17 'in FIG. 4 to absorb the looseness of the yarn Y. Is configured.

Incidentally, adjacent to the tension washer c11 and the guide roller c14, through holes c18 and c19 through which the yarn Y is inserted are formed in the frame c10. Further, the substantially U-shaped frame c10 is configured to be rotatable clockwise about an axis c20 arranged on the mast c4. When the bobbin c6 or the fryer c8 is mounted on the spindle c5, the frame c10 is used. Is rotated clockwise to make a space above the spindle c5, and the bobbin c6 or the fryer c8 is mounted on the spindle c5. After mounting the bobbin c6 or the fryer c8 on the spindle c5, the frame c10 is rotated counterclockwise and arranged at the position shown in FIG. Further, the frame c10 is configured to be held in the position shown in FIG. 4 unless the lock means is released by an appropriate lock means.

In FIG. 4, c21 is a substantially elliptical lower flange, and c22 is an upper flange c2 and a lower flange c21 which are slidably fitted into a track formed in the upper plate U.
It is a guide portion arranged in between. The bobbin carrier C is configured to travel along the track while being held substantially perpendicular to the upper plate U by sandwiching the upper plate U by the upper flange c2 and the lower flange c21.

Next, the composition position stabilizing guide member G will be described with reference to FIG. The composition position stability guide member G is predetermined with respect to the first composition position stability guide member g1 and the first composition position stability guide member g1 attached to a frame g1 ′ extending in a substantially horizontal direction from the intermediate frame Fb ″ of the machine base Fb. The second composition position stabilizing guide member g2 is attached to the tip end of a frame g2 'which is erected on the floor member Fr arranged with a space therebetween.

The first composition position stabilizing guide member g1 and the second
The composition position stability guide member g2 is arranged with a predetermined interval between the yarns Y that sway as the bobbin carrier C, which travels while meandering along a track formed in the upper plate U, moves laterally. The first composition position stability guide member g1 and the second composition position stability guide member g2 guide the composition point P to maintain the composition point P at a substantially constant position. By maintaining it at a substantially constant position, a stable composition can be realized without the yarn Y to be composed being entangled in an irregular state near the composition point P. Therefore, the shape of the composed composition is uniform and stable. The composition can be manufactured. Further, by arranging the composition position stabilizing guide member G, when the mandrel m is moved to the right in FIG. 2 after the composition is completed, it is connected to the composition formed by the second composition position stabilizing guide member g2. It is possible to bundle a large number of yarns Y and effectively cut the yarns Y by an appropriate cutting device (not shown).

Next, the mandrel device Bm will be described mainly with reference to FIG. 5 which is a side view of the mandrel device Bm and FIG. 6 which is a schematic enlarged plan view of the mandrel moving device M. The machine base Fm of the mandrel device Bm is arranged on the front surface of the braider body Bb as shown in FIGS. 1 and 2, and the braider body B is provided on the machine base Fm.
Curved upper plate U having a track formed in b
A horizontal movement frame b1 that is horizontally movable toward the approximate center of is arranged. Recesses b2 are provided on both side walls of the horizontal movement frame b1, and in the recesses b2, as shown in FIG. 5, a guide roller b3 pivotally attached to a horizontal shaft arranged at the upper part of the machine base Fm. , B3 'and guide rollers b4, b4' pivotally mounted on the vertical shaft are fitted.

A rack b5 is attached to the lower part of the horizontal moving frame b1 in parallel with the horizontal moving frame b1.
A pinion b7 attached to an output shaft b6 'of a motor b6 attached to the machine base Fm and capable of rotating in the normal and reverse directions is screwed to the unit 5. Therefore, the pinion b7 is rotationally driven by driving the motor b6 that can rotate in the normal and reverse directions, and the rack b5 screwed with the pinion b7 is horizontally driven to guide the guide rollers b3, b3 'and the guide rollers b4, b4. It is configured to horizontally move the horizontal moving frame b1 along the line.

A fan-shaped frame b8 is attached to the tip of the horizontal moving frame b1, and a motor b9 capable of rotating in the normal and reverse directions is arranged on the fan-shaped frame b8. Further, the pinion b1 is attached to the output shaft b9 ′ of the motor b9 capable of rotating in the forward and reverse directions.
0 is attached. At the tip of the horizontal moving frame b1 and the fan-shaped frame b8, as shown in FIG.
11 and b12 are attached, and horizontal axes b11 and b12
Guide rollers b13 and b14 are attached to the fan-shaped frame b8, and a vertical axis b15 is attached to the fan-shaped frame b8.
Is installed upright, and the vertical shaft b15 has a guide roller b.
16 are attached. An appropriate number of such guide rollers b13, b14, b16 are arranged along the longitudinal direction of the fan-shaped frame b8, and a fan-shaped moving member b17 to be described later.
Is configured to be stably held.

As shown in FIG. 6, the fan-shaped moving member b17 is composed of a frame member having a substantially rectangular cross section, and an appropriate number of the fan-shaped moving member b17 can be arranged horizontally or vertically from the outer wall of the fan-shaped moving member b17. By projecting the edge portion of the rail member, the rail members b18, b19, b20 to which the guide rollers b13, b14, b16 arranged on the tip end of the horizontal moving frame b1 and the fan-shaped frame b8 described above are fitted are formed. Further, a fan-shaped rack b22 is attached to the vertical shaft b21 hanging from the lower side wall of the fan-shaped moving member b17.
2 is an output shaft b of the motor b9 capable of rotating in the forward and reverse directions described above.
The pinion b10 attached to 9'is screwed. Therefore, the pinion b10 is rotationally driven by the rotation of the motor b9 capable of rotating in the normal and reverse directions, and the pinion b10 is rotated.
By driving the fan-shaped rack b22 that is screwed into the fan-shaped moving member b17, the fan-shaped moving member b17 is fitted to the rail members b18, b19, and b20 of the fan-shaped moving member b17. The guide rollers b13, b14, b16 arranged on the fan-shaped frame b8 are moved horizontally while being held in a horizontal state.

As shown in FIG. 6, pulleys b23 and b23 'are provided at both longitudinal ends of the fan-shaped moving member b17.
Is rotatably attached, and an endless belt b24 is stretched between the pulley b23 and the pulley b23 '. The endless belt b24 is shown in FIG.
As shown in FIG. 5, the horizontal movement frame b1 is fixed to a frame b25 'attached to a vertical shaft b25 that is erected at the tip of the horizontal movement frame b1. It is fixed to the member b26.

Next, the mandrel support moving member b26 will be described. As shown in FIG.
, A vertical shaft b28 having a guide roller b27 attached to the tip and a guide roller b2 attached to the tip.
The horizontal shaft b30 to which 9 is attached is arranged, and the guide rollers b27 and b29 are the above-mentioned fan-shaped moving member b1.
7 are fitted on rail members b31, b32 formed by an appropriate number of edges protruding in the horizontal or vertical direction from the outer wall of the mandrel 7, and therefore the mandrel support moving member b26.
Is configured to be horizontally movable along the rail members b31 and b32 of the fan-shaped moving member b17. The guide rollers b27, b29 are arranged in an appropriate number on the mandrel support moving member b26 so as to be stably held by the rail members b31, b32 of the fan-shaped moving member b17.

A vertical frame b33 is hung on the mandrel support moving member b26.
One portion of the endless belt b24 is fixed to 33 as described above. In FIG. 6, the point X is the vertical axis b at which the endless belt b24 is erected at the tip of the horizontal moving frame b1.
25 indicates that the endless belt b24 is fixed to the vertical frame b33 of the mandrel support moving member b26.

Reference numeral b34 is a support rod which is detachably or slidably attached to support frames b35 and b35 'provided upright on the mandrel support moving member b26.
A supporting plate b34 'is attached to the tip of the supporting rod b34, and an appropriate mandrel supporting device S is arranged on the supporting plate b34'.

The horizontal movement of the horizontal moving frame b1 for moving the mandrel m horizontally toward and away from the curved upper plate U having the track formed in the braider body Bb is performed. As described above, the pinion b7 is rotationally driven by driving the motor b6 capable of rotating in the forward and reverse directions, and the rack b5 screwed to the pinion b7 is horizontally driven.

Next, the movement of the mandrel m in a direction substantially orthogonal to the movement in the horizontal direction approaching or leaving the curved upper plate U will be described. From the state shown by the solid line in FIG. 6, when the pinion b10 is rotated counterclockwise in FIG. 6 by the rotation of the motor b9 that can rotate in the normal and reverse directions, the fan-shaped rack b screwed to the pinion b10.
22 is driven, and the fan-shaped moving member b17 moves downward in FIG.

When the fan-shaped moving member b17 moves downward and the pulley b23 attached to the fan-shaped moving member b17 also moves downward, the endless belt b24 is fixed to the tip of the horizontal moving frame b1 at point X. Therefore, the endless belt b24 on the opposite side of the pulley b23 is pulled downward in FIG. 6 to rotate the endless belt b24 counterclockwise. Since the mandrel support moving member b26 is fixed to the endless belt b24 at the point Z, the mandrel support moving member b26 also moves downward in FIG. 6 when the endless belt b24 rotates counterclockwise. At this time, due to the above-mentioned configuration, the mandrel support moving member b26 moves twice with respect to the moving amount of the pulley b23, and the mandrel support moving member 26 can be moved quickly.

Further, when the pinion b10 is rotated counterclockwise in FIG. 6 by the rotation of the motor b9 capable of rotating in the forward and reverse directions, the fan-shaped rack b2 screwed to the pinion b10.
2 is driven, the fan-shaped moving member b17 moves further downward in FIG. 6, and the mandrel support moving member b26 moves to the lower position in FIG.
It is configured so that it can be rotated to the lowermost position shown by the two-dot chain line. Further, in order to move the mandrel support moving member b26 upward from the lowermost position shown by the chain double-dashed line, the forward / reverse rotatable motor b9 is reversely rotated to rotate the pinion b10 clockwise in FIG. .

The position of the mandrel m is controlled by the mandrel device Bm as described above, and the composition is formed on the mandrel m.

Next, the order of forming the composition around the T-shaped mandrel m whose position is controlled by the mandrel moving device M as described above will be described with reference to FIGS. 7 and 8. The arrows shown in FIGS. 7 and 8 are
It shows the moving direction of the mandrel m. (A) First, the composition point P is positioned near one end (1) of the mandrel m as shown in FIG. 7 (a). For convenience of explanation, a triangle mark (Δ) is attached to the gripping position of the mandrel m. (B) From this state, the composition is started by driving the braider and causing the bobbin carrier to travel along the track, and as shown in FIG. 7 (b), the composition is directed toward the joint j of the mandrel m. To do. (C) After composition up to the joint j of the mandrel m, FIG.
As shown in (c), the gripping position of the mandrel m is rotated counterclockwise to the state shown in FIG. 7 (d). From this state, as shown in FIG. 7E, the branch portion m1 of the mandrel m is formed. (D) As shown in FIG. 7 (e), the mandrel m
The drive of the braider is stopped when the composition is reached to the end of the branch part m1 of the mandrel m, and one end (1) of the mandrel m is removed from the mandrel gripping device as shown in FIG. 7 (f). Is rotated 180 degrees, and one end (2) opposite to one end (1) of the mandrel m is attached to the mandrel holding device.

(E) After that, the drive of the braider is restarted, and as shown in FIG. 8A, the mandrel m is folded back from the end of the branch part m1 to form the branch part m1 again. (F) After composition up to the junction j of the mandrel m, FIG.
As shown in (b), the mandrel m is rotated clockwise to form the joint j of the mandrel m.
The mandrel m is rotated to the position shown in (c), and thereafter, as shown in FIG. 8 (d), the composition is performed up to the end of the mandrel m, and the composition is formed around the T-shaped mandrel m. To compose. It should be noted that, from the state shown in FIG. 8 (d), the composition is performed again toward the joint j, and further over the joint j to one end (1) of the mandrel m. Two layers of composition can be applied to the entire m. Further, by repeating the above-mentioned composition steps, it is possible to form a multilayer composition having an increased thickness.

Next, after the composition is formed around the T-shaped mandrel m by the above-mentioned braider BR, the T-shaped mandrel m is decomposed at the joint j to take out the T-shaped composition, and the resin is formed by the molding device described later. The means for impregnating and curing the above will be described. Alternatively, the T-shaped mandrel m may be made of a resin that can be dissolved in a suitable solvent, and the composition may be taken out by dissolving the mandrel m in the solvent after forming the composition.

Next, a method for forming a joint structure by impregnating a T-shaped composition composed of the above-mentioned braider BR with a resin and then curing the resin will be described with reference to FIG. .

From the openings h1, h2, h3 of the T-shaped composition H shown in FIG. 9 (a) formed by the braider BR as described above, as shown in FIG. 9 (b). The I-shaped mold materials h1 ′, h2 ′, and h3 ′ are respectively inserted. Next, the I-shaped mold members h1 ′, h2 ′,
With the h3 'inserted, the T-shaped composition H is impregnated with, for example, a thermosetting resin by spraying or impregnation means, and then impregnated with the resin as shown in FIG. 9 (c). The formed T-shaped composition H is used as a mold material h1 ′, h2 ′, h3 ′.
Press along. After that, for example, a T-shaped composition H that has been impregnated with a thermosetting resin and that has been molded is heated to mold a cured joint structure H ′ as shown in FIG. 9D. The means for pressing the resin-impregnated T-shaped composition H along the mold members h1 ′, h2 ′, h3 ′ is a joint structure H ′ to be molded.
It is possible to employ a pressing means or the like that presses with a mold or the like having a recess corresponding to the outer shape of the.

An example of use of the joint structure H'produced by the method as described above is shown in FIG. h4, h5, h6 are through holes h attached to the through holes h1 ″, h2 ″, h3 ″ at the ends of the joint structure H ′.
1 ″, h 2 ″, and h 3 ″ are frames having the same cross-section, and the frames h 4, h 5, h 6 are similarly composed by a braider and impregnated and cured with a resin, so that the joint structure H ′ is obtained. A structure using can be lightened.

FIG. 11 shows the T shown in FIG. 9 (a).
After the letter-shaped composition H is impregnated with the resin, as shown in FIG. 10 (a), the base h7 and the press plate h8 are compressed, and the base h7 or the press plate h8 is heated by an appropriate heating device. Heat to cure the resin, as shown in FIG.
An example is shown in which a T-shaped plate-like joint structure H ″ as shown in (b) is molded.

A frame h11, which is composed of a braider and impregnated and hardened with a resin and has an I-shaped cross section, is connected to a contact portion where a rod-shaped frame is continuously connected to the frame h9 and h10 at a right angle. Touch, frame h9, h
As shown in FIG. 12, the above-mentioned T-shaped plate-like joint structure H ″ is arranged in a sandwich form from both sides at the joint portion of 10 and h12, and the bolts h12 and nuts h13 and the like are appropriately fixed. The structures can be assembled by joining by means.

In the above description of the present invention, as an example,
Example in which a T-shaped composition H was formed by using a T-shaped mandrel m, the T-shaped composition H was impregnated with a resin, and the resin was cured to produce a joint structure H ′, H ″. However, it is also possible to produce a Y-shaped joint structure using, for example, a Y-shaped composition formed by using a Y-shaped mandrel, and a composition using a tetrapot-shaped mandrel. It is also possible to manufacture a joint structure having a three-dimensional structure by using the prepared tetrapot-shaped composition, and by using mandrels having various shapes, various compositions can be formed and various joint structures can be prepared. The body can be manufactured.

[0045]

Since the present invention is constructed as described above, it has the following effects. Since the joint structure is manufactured by using the seamless composition by the braider, it is possible to manufacture the joint structure in which the bent portion or the joint portion is reinforced. Also,
Since the core material is a composition composed of a large number of interlaced yarns, it is possible to manufacture a lightweight joint structure having excellent impact absorbing performance. Further, since the composition is formed by the continuous composition process having excellent productivity, the production cost of the joint structure can be reduced, and the production process of the joint structure can be automated.

[Brief description of drawings]

FIG. 1 is a front view of a braider.

FIG. 2 is a side view of a braider.

FIG. 3 is an enlarged front view of a driving device for causing the bobbin carrier to travel along the track, including the I-I cross section of FIG. 2.

FIG. 4 is a front view of the bobbin carrier.

FIG. 5 is a side view of the mandrel device.

FIG. 6 is a schematic enlarged plan view of a mandrel moving device.

FIG. 7 is a process diagram showing a composition sequence of a composition to be a T-shaped mandrel.

FIG. 8 is a process drawing showing the composition sequence of the composition on the T-shaped mandrel.

FIG. 9 is a process drawing showing a molding sequence of a joint structure.

FIG. 10 is an exploded perspective view showing an example of a structure assembled using a joint structure.

FIG. 11 is a process drawing showing the molding sequence of another joint structure.

FIG. 12 is an exploded perspective view showing an example of a structure assembled by using another joint structure.

[Explanation of symbols]

 BR: Braider Bb: Braider body Bm: Mandrel device H: Composition (preform) M:・ ・ ・ Mandrel moving device m ・ ・ ・ ・ ・ ・ Mandrel

Claims (2)

[Claims] 1. A joint structure, which is cured with a resin containing a composition composed of a braider as a core material. 2. A joint structure is produced by forming a composition with a braider, impregnating the composition with a resin, then molding the composition impregnated with the resin, and curing the resin. Joint structure manufacturing method.