JP3678459B2 - Small beam press-fitting device for fences and other frames - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a small beam press-fitting joint in a frame such as a fence used for joining a vertical beam or a horizontal beam to a base beam of a horizontal beam or a vertical beam in a frame such as a fence, a gate, a face lattice, and a handrail. Relates to the device.
[0002]
[Prior art]
As a small beam press-fitting device for a frame such as this type of fence, each joint strip disposed on both side ends of the small beam is press-fitted into a pair of notched grooves disposed by notching the standing fin of the base beam. An example in which a small beam is joined to a base beam by holding a notch groove edge between opposing walls of a bonding bar and applying a punching prevention means to this is disclosed in, for example, Japanese Utility Model Publication No. 59-138670, No. 59-194456, Japanese Utility Model Publication No. 62-187166, and the like.
[0003]
[Problems to be solved by the invention]
However, in this case, the joining of the small beam requires both a press-fitting process and a punching-out removal process, and the production tends to be complicated, but the joining strength of the small beam is limited to the edge of the notch groove due to the joining strip. Since it is ensured by relying on both the gripping and the retaining means, the retaining means is an essential element for securing the bonding strength, and there remains a problem that it cannot be omitted.
[0004]
The present invention has been made in view of such circumstances, and the solution to the problem is a fence or the like that can secure sufficient joint strength and facilitate production without using a retaining means. It is in providing a small beam press-fitting and joining apparatus.
[0005]
[Means for Solving the Problems]
In accordance with the above-described problems, the present invention provides a pair of notch grooves disposed in the standing fins of the base rail in a C shape toward the base rail, and the tip thereof is bent in the opposite direction. Is used as a cutter, and the connecting wall of the opposing wall in the joint of the small beam is formed to be breakable, and the connecting wall is automatically broken by the cutter by the press-fitting pressure of the small beam, and this is introduced into the bent end portion. Therefore, it is possible to secure the joining strength without using the retaining means, with the remaining facing wall part remaining after the breakage straddling the remaining upright part on the front end side of the notch groove, and the press fitting of the small beam as a complete joining means. In other words, the invention according to claim 1 is applied to each pair of notch grooves provided by notching the standing fins of the base rail, and the joining strips provided at both ends of the small rail are provided. Press-fit and hold the notch groove edge between the opposing walls of the joint strip and A beam joining apparatus for joining a small beam, wherein the pair of notch grooves are inclined in a C shape toward the base beam and bent at the tip in the opposite direction, and the inclined notch on the non-facing side. A cutter with an edge is provided, and the notch is formed at the intermediate position of the standing fin height, with a standing upright portion having the standing end of the standing fin remaining on the tip side of each notched groove, The pair of notch grooves is formed with a connecting wall that can be broken by connecting the facing walls between the facing walls, and the small beam is press-fitted into the pair of notch grooves, and the cutter is used by the press-fitting pressure. Breaks the connecting wall of each joining strip into a tongue-like shape, introduces the broken portion into the bent end portion, and straddles the remaining facing wall portion of the connecting wall due to the breaking over the remaining standing portion, The small crosspiece is completely joined to the base crosspiece. It is obtained by the small 桟圧 input bonding apparatus in the fence or the like 桟組 body to.
[0006]
The invention according to claim 2 is a pair of the notch grooves, a bent portion at the tip thereof, and a cutter that are inclined in a C shape toward the base rail so as to have another form. In place of the notch grooves, a pair of notch grooves that are inclined in a reverse C shape toward the base rail are provided, a tip bent portion whose tip is bent in a non-opposing direction, and a cutter with an inclined notch edge on the opposite side; The small crosspiece press-fitting and joining device in the crosspiece of the fence or the like according to claim 1 is provided.
[0007]
In addition to the above, the invention described in claim 3 should be of the form of a small beam which is low in cost and excellent in strength and has undergone material conversion instead of a conventionally used small beam of aluminum extruded material. The small crosspiece is made of an aluminum sheet roll forming molding material filled with foamed resin as a core, and the connecting wall is formed by the aluminum sheet so that the connecting wall can be broken. It is set as the small crosspiece press-fit joining apparatus in crosspieces, such as a fence of Claim 1 or 2 to do.
[0008]
The present invention is a means for solving the above problems as the gist of the invention.
[0009]
【Example】
The present invention will be described in more detail with reference to the drawings showing the embodiments. A is a fence made of aluminum frames, 1 is a base beam forming a pair of upper and lower horizontal beams, and 2 is a longitudinal beam on the base beam 1. A number of small crosspieces arranged between the base crosspieces 1 by press-fitting and joining end portions in the direction are shown.
[0010]
The base beam 1 and the small beam 2 are both made of an aluminum sheet roll forming molding material 3 filled with a foamed resin 4 as a core. The press-fitting of the small beam 2 to the base beam 1 The joining strips 20 disposed on both side ends of the small beam 2 are press-fitted into a pair of notch grooves 11 that are disposed by performing notch processing on the standing fin 10, and the edges of the notch groove 11 are opposed walls 21 of the joining strip 20. It is assumed that the small beam 2 is joined to the base beam 1 by holding it in between. At this time, the pair of notch grooves 11 are inclined in a C shape toward the base beam 1 side, and the tip thereof is bent in the opposite direction. A cutter 13 is provided with a tip bending portion 12 and an inclined notch edge on the non-opposite side, and the notch processing is set at an intermediate position of the height of the standing fin 10, and the standing end portion of the standing fin 10 remains at the tip side of each notch groove 11. It is formed with the remaining upright part 14 and the small beam 2 Each joining strip 20 is formed with a connecting wall 22 that connects the opposing walls 21 between the opposing walls 21, and the cutter 13 of the pair of cutout grooves 11 can be broken. The cutter 13 is pressed into the groove 11 and the cutter 13 breaks the connecting wall 22 of each joining strip 20 into a tongue-like shape and introduces the broken portion 23 into the distal end bending portion 12 and the connecting wall 22 due to the breaking. The remaining facing wall portion 24 is straddled over the remaining upright portion 14, and the small beam 2 is completely joined to the base beam 1 by the press-fitting. In this example, the small beam 2 is Since the aluminum thin plate roll forming material 3 is used, the connecting wall 22 is formed of the aluminum thin plate, so that the connecting wall 22 can be broken.
[0011]
That is, in this example, the base beam 1 and the small beam 2 are made of JIS A-3004H36 aluminum thin plate material having improved mechanical strength as compared with the JISA-6063T5 material used as an aluminum extrusion material. .5mm-thick aluminum sheet material is roll-formed so as to be bent and joined at the edge of the standing fin 10 to form a bar material suitable for use as a horizontal beam, and the small beam 2 is 0.3mm thick Roll forming is performed so that the edge is also bent and joined at the joining strip 20 part on one side surface by a thin aluminum sheet material to make a bar material suitable for use as a vertical beam, both before the final stage joining of roll forming For example, urethane foam resin is injected from the remaining opening on the joint edge side, and the foam resin is filled with the entire surface of the aluminum sheet to fill the hollow portion. For example, it is assumed that the filling is performed by foam filling with an expansion ratio of 18 times.
[0012]
At this time, the standing fins 10 in the base rail 1 are assumed to have improved rigidity with a thickness of 1.5 mm obtained by, for example, triple folding the above-described aluminum thin plate material. In the center position of the opposite base walls, for example, it is assumed to stand vertically at a height of 12 mm.
[0013]
The pair of cutout grooves 11 of the standing fin 10 are inclined in the opposite direction, for example, about 10 °, particularly at an inclination angle of 9.7 °, and the tip thereof is in a semicircular shape with a lower end curved in the opposite direction. Corresponding to the number of small crosspieces 2 in the longitudinal direction of the standing fin 10 by making a slanted slit with a bent end 12 bent to about 1.5 mm, for example, a 1.65 mm wide inclined slit. Each of the pair of cutout grooves 11 has a height of, for example, 10 mm at an intermediate position with respect to the standing height of 12 mm of the standing fin 10. It is assumed that a standing upright portion 14 having a standing end portion of the upstanding fin 10 remaining at a height of 2 mm is disposed on the side.
[0014]
In the small beam 2, the joining strip 20 is used by overlapping the above-mentioned aluminum thin plate material at the front end side by double-folding to ensure the 0.6 mm thickness and improving the rigidity and strength. In this example, the pair of opposing walls 21 which can receive the foam-filled urethane resin and ensure the rigidity and the opposing walls 21 are connected in the middle, and in this example, the joining strip 20 is connected in an H-shape. And a connecting wall 22 which is a thin bridge of an intermediate wall made of a thin aluminum plate material having a thickness of 0.3 mm, and 5 mm with a distance of 1.5 mm between the opposing walls 21 at the center position on both ends of the small beam 2. It is assumed that it protrudes vertically so as to have a protruding width of.
[0015]
The base beam 1 and the small beam 2 formed in this manner press-fit each joint strip 20 into the notch groove 11 so that the opposing wall 21 of the joint strip 20 holds the edge of the notch groove 11 on the side end side thereof. At the same time, when the connecting wall 22 of the joining strip 20 is pressed against the cutter 13 by the inclined notch edge of the notch groove 11 and receives press-fitting pressure, the longitudinal end of the connecting wall 22 becomes the inclined notch edge. In this example, the rupture portion 23 of the connecting wall 22 is extruded from the joint strip 20 by its self-curling property and the inclined notch edge. While being sent in the opposite direction and introduced into the distal bent portion 12, the remaining opposing wall portion 24 remaining due to the breaking of the connecting wall 22 proceeds to the base rail 1 side by receiving the press-fitting pressure as it is and remains there. Straddling the standing part 14 And, performing clamping of the remaining standing portion 14, leading to complete joined small crosspiece 2 with respect Moto桟 1 as complete Bonding means whereby the press-fitting of the joining strip 20.
[0016]
At this time, due to the press-fitting of the joining strip 20, the connecting wall 22 exhibits a self-breaking property, and the breaking is caused by the thickness of the cutter 13 by the inclined notch edge, that is, the thickness of the standing fin 10, and the remaining standing portion 14. Therefore, the remaining facing wall portion 24 is straddled across the remaining upright portion 14 having a thickness corresponding to the interval between the fracture portions 23 so as to tightly fit the remaining facing wall portion 24. Thus, the edge of the notch groove 11 is held by the facing wall 21 of the joint strip 20, the anti-rolling action of the breakage portion 23 by introducing the tongue-like breakage portion 23 into the distal bending portion 12, and the remaining facing wall portion. 24, in combination with the continuity of the standing fins that are continuously separated without being divided by the presence of the remaining standing portion 14 by the holding of the remaining standing portion 14, Bond strength is Fence A It is possible to sufficiently strong ones.
[0017]
For example, the fence A of this example has a pair of base rails 1 placed on a table so that the standing fins 10 are opposed to each other, and a small rail 2 is placed in parallel at a predetermined interval in a perpendicular manner. 1 is obtained by applying press-fitting pressure so that the press-fitting force is applied in the opposite direction by a pressing device, and performing simultaneous press-fitting and thus the production is achieved by making the press-fitting process a complete joining means. A fence A can be configured.
[0018]
Reference numeral 15 in the figure is located between the pair of notch grooves 11 and is inserted into a receiving slit 25 provided at the front end in the longitudinal direction of the small beam 2 so as to reduce the press-fitting resistance, and acts to prevent the anti-rolling. It is the insertion protrusion piece of the standing fin 10 made to do.
[0019]
The illustrated example is as described above, but instead of the pair of notch grooves inclined in a C shape toward the base rail side, a pair of notch grooves inclined in an inverted C shape toward the base rail side is provided. It is possible to perform the same press-fitting by rupture of the connecting wall, provided with a cutter having a tip bent portion whose tip is bent in a non-opposing direction and an inclined notched edge on the opposite side.
[0020]
Furthermore, the bent end of the notch groove should be horizontal, downward curved, etc., bent in the opposite direction or non-opposing direction with the groove width of the inclined slit, and the inner end of the opposite wall instead of the above H-shaped joining strip A pair of side walls with a connecting wall, a small crosspiece made of extruded aluminum, and thinned at the breaking position as necessary so that the connecting wall can be broken V-groove shall be engraved, small beam shall be made of a metal thin plate roll forming material such as stainless steel other than aluminum thin plate, V-groove shall be similarly engraved at the breaking position, other than fence It is used to construct a frame such as a gate, face grid, handrail, etc., and is constructed in the same manner as the above small beam, and is provided with other means such as punching. Use or screw the end frame to the end of the base Etc., including further improving the strength as a frame, etc., including the base beam, small beam, standing fin, remaining standing part, notch groove, joining strip material, shape, structure, etc. Specific embodiments such as these relationships can be in various forms as long as they do not contradict the gist of the invention.
[0021]
【The invention's effect】
Since the present invention is configured as described above, the invention according to claim 1 and claim 2 inclines the pair of notch grooves arranged in the standing fin of the base rail in a C shape toward the base rail. By bending the tip in the opposite direction, the inclined notch edge is used as a cutter, the connecting wall of the opposing wall in the joint of the small beam is formed to be fragile, and the connecting wall is formed by the cutter by the press-fitting pressure of the small beam. It breaks automatically and introduces it into the bent end, while the remaining facing wall remaining after the break is straddled over the remaining standing part on the front end of the notch groove, and the press fitting of the small beam is used as a complete joining means Small press-fitting in a frame structure such as a fence that can secure sufficient bonding strength and facilitate production without using a retaining means, so that the joining strength can be secured without using a retaining means. Can provide bonding equipment That.
[0022]
Further, in addition to the above, the invention described in claim 3 should be of a form using a small beam which is low cost and excellent in strength and has undergone material conversion instead of a conventionally used small beam made of an aluminum extruded material. Can do.
[Brief description of the drawings]
[Fig. 1] Front view of the fence [Fig. 2] Front view showing the relationship between the base beam and the small beam [Fig. 3] Cross-sectional view showing the relationship between the base beam and the small beam [Fig. 4] Between the standing fin and the joining strip Longitudinal sectional view showing the relationship [Fig.5] Longitudinal sectional view showing the relationship between the remaining standing wall and the connecting strip [Fig.6] Front view of the standing fin [Fig.7] Cross-sectional view of the small beam [Fig.8] Enlarged front view [Fig. 9] Exploded perspective view showing the relationship between the base beam and the small beam [Explanation of symbols]
A Fence 1 Base beam 2 Small beam 3 Molding material 4 Foamed resin 10 Standing flange 12 Tip bent part 13 Cutter 14 Remaining standing part 20 Joining strip 21 Opposing wall 22 Connecting wall 23 Breaking part 24 Remaining facing wall part

Claims (3)

  The joint strips arranged on both ends of the small rail are press-fitted into a pair of notch grooves arranged by cutting out the standing fins of the base beam, and the edge of the notch groove is held between the opposing walls of the joint strip. And a pair of notch grooves that are inclined in a C shape toward the base and bent in the opposite direction. A cutter with an inclined notch edge on the non-opposing side is provided, and the notch machining is provided with a remaining standing portion where the standing end portion of the standing fin remains on the tip side of each notch groove with the notch processing as an intermediate position of the standing fin height, Each joining strip of the small beam is formed with a coupling wall that connects the opposed walls between the opposed walls and is capable of breaking the cutter of the pair of notch grooves, and presses the small beam into the pair of notch grooves. With the press-fitting pressure, the cutter breaks the connecting wall of each joining strip into a tongue-like shape and It is characterized in that it is introduced into the bent portion of the tip and the remaining facing wall portion of the connecting wall due to the break is straddled over the remaining upright portion, and the small beam is completely joined to the base beam by the press-fitting. A small beam press-fitting and joining device for a frame such as a fence.   In place of the pair of notch grooves inclined in a C shape toward the base rail, a pair of notch grooves inclined in a reverse C shape toward the base rail is provided, and the tip thereof is bent in a non-opposing direction. The small beam press-fitting and joining device in a frame structure such as a fence according to claim 1, further comprising a cutter having a bent end portion and an inclined notched edge on the opposite side.   The small crosspiece is made of an aluminum thin plate roll forming molding material filled with foamed resin as a core, and the connecting wall is formed of the aluminum thin plate so that the connecting wall can be broken. A small beam press-fitting and joining device in a frame structure such as a fence according to 1 or 2.

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