JP2003239940A - Method for assembling fitting part of recessed and projecting part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily screw in a machine screw (a tapping screw) when inserting and rotatably fitting an engaging protruding part in an interior of a cross sectionally C-shaped recessed groove from one end, screwing machine screws in interiors of both ends of the recessed groove and preventing loosening of the engaging protruding part from both ends of the recessed groove. <P>SOLUTION: One protruding part is provided in the interior of the recessed groove, and the machine screws are screwed in a tip of the protruding part in the recessed groove and one part of an inner circumference of the recessed groove while cutting threads. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing shutter for an entrance / exit that is wound around an entrance / exit of a building such as a store and then pulled down to close the entrance / exit, or laid on the floor of the entrance of the building or provided on the floor. It fits into a shallow depression, removes mud, water, dust, etc. adhering to the backs of people's footwear entering the building and drops it on the floor or the bottom of the depression, poolside,
Place it on the floor of a balcony, bathroom, etc., drop water on the floor,
Concavities and convexities suitable for rollable cage-like objects such as floor mats that can be removed for cleaning the floor, or can be easily rolled up in a swirl for easy storage and transportation. The present invention relates to a method of assembling a fitting part.

[0002]

2. Description of the Related Art The applicant of the present patent application is Japanese Patent Application No. 2001-321.
No. 35 and No. 32136, the slidable member as a first member having a recessed groove of a C-shaped cross section on the left and right side walls and the recessed groove on the opposite side walls of the two slidable members are slidably rotated. A plate-like connecting member as a second member having engaging convex portions movably fitted on both sides, and screwing from both ends into concave grooves on both side walls of the cauldron member to engage the engaging convex portion of the connecting member. A screw (tapping screw) as a retaining member for preventing the portion from escaping from each end of the concave groove on both side walls of the coffin member and for rotatably assembling the first member and the second member, The invention proposed a cage-like floor mat composed of end plates fixed to the end faces of both ends of the first member by the screws.

The above-mentioned rod member and connecting member are manufactured by extruding aluminum or plastic into a long length and then cutting them to a required length, and two engaging projections on both sides of the connecting member are provided. It is inserted from one end into a groove having a C-shaped cross section on opposite side walls of the material. In this case, since the crosspiece member and the connecting member are rotatable, the opening angle of the opening portion of the groove is 60 to 90 °.
It has become.

[0004]

Then, if a screw is used to close each end of the concave groove so that the engaging convex portion of the connecting member does not come out from one end or the other end of the concave groove, a screw thread of the screw is formed. Needs to be screwed in while cutting the screw over the inner circumference of the groove of 270 to 300 °, so it requires a great deal of force, and in some cases the head of the screw and the shank with the screw thread are torn off during the screwing operation. , Defective products may occur. Further, it is composed of an outer cylinder having a slit around the distal end and a flange at the base end, and a shaft passed through the outer cylinder, and when the shaft protruding outward from the flange of the outer cylinder is pulled, the slit of the outer cylinder is opened. The tip part has a split and expands at the same time, and at the same time, the shaft is torn in the middle, and at the same time it consists of a similar outer cylinder and shaft, and the shaft protruding outward from the flange of the outer cylinder is driven into the outer cylinder. There is a two-member type rivet made of aluminum or plastic, such as a hammering type, which expands the tip end having the slit of the outer cylinder by expanding it. However, if the inner circumference of the concave groove is 270 to 300 °, the above two members This cannot be used in place of a screw, because the tip portion of the mold rivet divided by the slit in the outer cylinder cannot be expanded. Also, a rivet pin made of metal or plastic may be tapped from each end of the groove to deform the outer circumference of the pin or the inner circumference of the groove to close each end of the groove with the rivet pin. Also in this case, similarly to the screw, the rivet pin must be strongly hammered in to deform the inner circumference of the groove extending from 270 to 300 ° and the outer circumference of the rivet pin itself.

[0005]

Therefore, according to the present invention, even if the grooves are the same, a screw (tapping screw) can be easily screwed into each end portion of the groove, and a rivet pin can be easily tapped. The pulling-out or driving-type two-member rivet is also used to close both ends of the concave groove to prevent the engaging convex portion from coming out from each end of the concave groove. , A C-shaped cross section and an engaging convex part that is inserted into the inside of the concave groove from one end and rotatably fitted therein, with an engagement convex part that closes the insides of both ends of the concave groove. In the method for assembling a concave-convex fitting part in which a portion is prevented from coming out from both ends of the concave groove, an integral protrusion is provided inside the concave groove, and the retaining member is a tip portion of the protrusion inside the concave groove. The screw is screwed into a part of the inner circumference of the groove while screwing. According to a second aspect of the present invention, a retaining member that closes the insides of both ends of the groove with a groove having a C-shaped cross section and an engaging protrusion that is inserted into the groove from one end and rotatably fitted therein. In the method of assembling the concave-convex fitting portion in which the engaging convex portion is prevented from coming off from both ends of the concave groove, an integral projection is provided inside the concave groove, and the retaining member is provided on the outer cylinder and the outer cylinder. After inserting the outer cylinder into the groove while contacting the tip of the protrusion in the groove and a part of the inner circumference of the groove, the outer cylinder is inserted into the groove by the shaft. The outer cylinder is a two-member type rivet that can be expanded. According to a third aspect of the present invention, a concave groove having a C-shaped cross section and an engaging convex portion that is inserted into the concave groove from one end and rotatably fitted therein are provided so as to close the insides of both ends of the concave groove. In a method of assembling a concave-convex fitting portion in which an engaging convex portion is prevented from coming off from both ends of a concave groove by a stopper member, an integral projection is provided inside the concave groove, The rivet pin is characterized in that it is a rivet pin that is struck while deforming the tip of the protrusion and a part of the inner circumference of the groove. A circumferential notch for receiving the projection of the concave groove rotatably in the circumferential direction is provided on the outer periphery of the engaging convex part fitted in the concave groove of the above-mentioned claims 1 to 3, or the concave part is formed. It is preferable that the diameter of the outer circumference of the engaging convex portion that fits inside the groove is such that the outer circumference comes into contact with the tip of the protrusion in the concave groove and a part of the inner circumference of the concave groove.
A groove having a C-shaped cross section may be provided on one of the parallel sides of the elongated member, and an engaging projection may be provided on the other side of the elongated member. Provided,
The engaging protrusions may be provided back to back on both parallel side walls of the elongated second member. When the recessed grooves having a C-shaped cross section are provided back to back on both parallel side walls of the elongated first member and the engaging protrusions are provided back to back on both parallel side walls of the elongated second member, the first member is a rectangular coffin member. The second member is preferably a plate-shaped connecting member. An opening may be formed in the plate portion of the plate-like connecting member, or end face plates that come into contact with the end faces of both ends of the cauldron member may be provided, and each end face plate may have a C-shape on both side walls of the cauldron member. An insertion hole for inserting a retaining member that closes each end of the concave groove of the cross section and an integral pin that is the same as the rivet pin that taps into each end of the concave groove of the C-shaped cross section are provided on both sides. Secure the end plates by abutting against the end faces of the cauldron member with the retaining members inserted in the grooved grooves on the cauldron side walls, or the pins hit into the grooved grooves on the lateral side walls of the cauldron member. It is preferable to close it.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In each of the embodiments shown in FIGS.
Reference numeral 0 is a first member, and both side walls 11 and 11 thereof are provided with arcuate grooves 12 having a C-shaped cross section back to back, and each groove has an opening 13. The open portion 13 is 60 to 60 mm from the center of the groove.
It is open in an arc shape of about 90 °. The width of the first member is arbitrary, but is, for example, about 30 to 60 mm.

Reference numeral 20 is a second member, which is slidably fitted into the concave grooves 12, 12 of the two adjacent side walls 11, 11 of the first member, which are slidable from one end or the other end. A first member 10 that has mating convex portions 21 and 21 on both sides, and that connects the mutually facing side walls of the first members for two adjacent ones so as to be swingable, and a plurality of parallel first members 10 that are alternately arranged; The second member 20 constitutes a cage-shaped object which can be wound into a spiral with a required width. The width of this second member is also arbitrary, but for example 20
It is about 30 mm.

The first member 10 and the second member 20 are manufactured by extruding a metal such as aluminum or brass or a plastic into a long length by an extrusion molding method and cutting it into a predetermined length.

An integral protrusion 14 is provided inside the groove 12. The protrusion 14 is shown in FIG. 1 (B), FIG. 2 (D), FIG. 3 (D),
As shown in FIG. 4 (B), it may be provided at a position of about 180 ° facing the center of the open portion 13, or FIG. 1 (C), FIG.
(E), FIG. 3 (E), and FIG.
It may be provided at a position of approximately 90 ° that does not face 3. or,
The number of the protrusions 14 is not limited to one, and the protrusion 14 shown in FIG.
As shown in B), a plurality of, for example, two may be provided.

When the retaining member 30 for closing the insides of both ends of the groove is a screw (tapping screw) 31, the diameter of the threaded portion 32 is smaller than the inner diameter of the groove 12, and the peak diameter 32 'thereof is as described above. A screw is used that can be screwed into the tip of the protrusion 14 and a part of the inner circumference of the concave groove.

In this case, if the projection 14 of the concave groove is provided at a position substantially opposite to the opening 13 (FIG. 1B), the thread diameter 32 'of the screw thread of the screw is as shown in the drawing. Of the inner periphery of the groove and the inside of the opposite ends 13 ', 13' of the open portion 13 on the inner periphery of the groove, but not on the other portion of the inner periphery of the groove. Therefore, it can be screwed in lightly with a slight force. Further, when the projection 14 of the concave groove is provided at a position substantially perpendicular to the open portion 13 as shown in FIG. 1C, the thread diameter 32 ′ of the screw thread of the screw is as shown in FIG.
No. 4 and the inner peripheral portion 12 'of the concave groove facing the distal end of the protrusion 14 are screwed, but the other inner peripheral portion of the concave groove is not screwed. , Similarly, it can be screwed in lightly with a little force.

Further, in the case where the pull-out preventing member for closing the insides of both ends of the concave groove is the above-mentioned two-member split rivet 33 made of aluminum or plastic, as shown in FIG. Is smaller than the inner diameter of the recessed groove 12, and the rivet 33 is inserted into the recessed groove while the outer circumference of the outer cylinder 34 is in contact with the tip of the protrusion 14 and a part of the inner circumference of the recessed groove ( FIG. 2B). As a result, the outer cylinder closes the open portion of the concave groove from the inside, but an arcuate space is formed between the outer circumference of the outer cylinder and the inner circumference of the concave groove.

Next, the flange 35 at the base end of the outer cylinder is pressed against the concave groove, that is, the end surface of the first member 10, and the shaft 37 penetrating the outer cylinder and projecting outward from the flange 35 is pulled forward (FIG. Two
C). As a result, the bulb portion 3 provided at the tip of the shaft 37
8 is an outer cylinder divided into a plurality of slits 36, and the end of the outer cylinder is expanded outwardly to be clogged inside the expanded front end 36 ′ of the outer cylinder, and a fragile portion 39 provided in front of the bulb 38 forms a shaft. The outer surface of the tip end 36 'of the shredded outer cylinder spreads into pressure contact with the inner surface of the concave groove, and as shown in FIGS.
3 closes each end of the groove. This work can be performed easily by inserting the rivet 33 into the groove from each end and pressing the shaft 35 of the outer cylinder against the end surface of the first member 10 and pulling the shaft 37 with a slight force. In FIG. 2D, the protrusion 14 closes the concave groove facing the opening 13, and in FIG. 2E, the protrusion 14 is provided at a position approximately 90 ° with respect to the opening 13. The state where the groove is closed is shown.

A retaining member 30 for closing the insides of both ends of the groove.
As shown in FIG. 3, the driving-type two-member type rivet 43 made of aluminum or plastic is divided into a flange 45 at the base end and a plurality of slits 46 at the tip end, as in the above-mentioned pulling rivet 33. The diameter is smaller than the inner diameter of the groove 12,
A part of the inner circumference of the groove, an outer cylinder 44 that is inserted into the groove while contacting the tip of the protrusion 14, and a base end of the outer cylinder that projects into the outer cylinder 44 and has the flange 45. And a cylindrical shaft 47 projecting outwardly. In the outer cylinder, the inner diameter of the tip portion 46 ′ divided by the slit 46 is tapered toward the tip and is thinner than the shaft 47. Therefore, the portion of the shaft 47 projecting from the flange 45 to the outside is the outer cylinder. When it is driven into the inside of the cylinder, the tip of the shaft is divided into a plurality of slits 46, and the tip 4 of the outer cylinder is cut.
Spread 6'outward.

Therefore, the flange 45 of the outer cylinder 44 is attached to the first member 10
The rivet 43 is inserted into the groove 12 until it comes into contact with the end surface of the shaft (Fig. 3B), and then the base end portion 47 'of the shaft 47 projecting outward from the flange is driven into the outer cylinder (Fig. 3C). Since an arc-shaped space is formed between the outer circumference of the outer cylinder and the inner circumference of the concave groove 12, the tip portion 46 'of the outer cylinder easily spreads outward, and the outer surface of the tip portion 46' forms a concave groove. Press the inner surface and rivet 43
Clogs inside each end of the groove (FIGS. 3D and E) and closes each end of the groove. In FIG. 3 (D), the protrusion 14 has an open portion 13
The state where the concave groove facing the
4 shows a state in which a concave groove provided at a position of approximately 90 ° with the open portion 13 is closed.

FIG. 4 shows a case where a rivet pin 41 formed of metal or plastic is used as a retaining member and is hit with a hammer or the like into each end of the groove 12 to close each end of the groove. Show. The outer diameter of the shaft portion of the rivet pin 41 may be smaller than the inner diameter of the groove 12 as with the screw 31 described above, and may be approximately the same as the screw thread diameter 32 '. The rivet pin 41 may be a straight cylinder, but if the shaft portion is provided with one or more tapered steps 42 having a slightly smaller diameter toward the tip as shown in the figure,
After hitting into the groove, the step 42 acts as a detent to prevent the escape. The rivet pin 41 may have a head 41 'at its rear end, but it is not necessary. Figure 4
4B is a cross-sectional view showing a state in which the rivet pin 41 is hit into the concave groove 12 in which the protrusion 14 faces the open portion 13, FIG.
(C) is a sectional view showing a state where the rivet pin 41 is tapped into a concave groove provided at a position where the projecting portion 14 is substantially perpendicular to the open portion, and when both the first member 10 and the rivet pin 41 are metal, the rivet The pin 41 deforms the protruding portion 14 and press-contacts with a part of the inner circumference of the concave groove, and the first member is metal, and the rivet pin 4
When 1 is plastic, the pin 41 is deformed by the protrusion 14 and press-contacts with a part of the inner circumference of the concave groove. An adhesive may be applied to the shaft portion of the rivet pin 41.

In order to rotatably fit the engaging convex portion 21 into the concave groove 12 having the protruding portion 14, as shown in FIG. 5A, the engaging convex portion 21 is fitted to the inner periphery of the concave groove. Circumferential notch 2 for receiving the projection of the concave groove rotatably in the circumferential direction on the outer periphery of the convex portion 2
2 is provided, or, as shown in FIG. 5B, the diameter D of the outer periphery of the engaging convex portion 21 is made smaller than the inner diameter of the concave groove, and the tip of the protrusion 14 and the concave groove The diameter is made small so as to be circumscribed inside a part of the circumference, preferably both ends 13 ′, 13 ′ of the open portion 13 facing each other. The engagement protrusion provided with the notch 22 in FIG.
A and the engagement convex part which reduced the diameter of FIG.5 (B) are hereafter described as the small diameter convex part 21B.

In any of the above cases, the maximum rotation range is that the second member is the first member and both end portions 13 ', 1 of the opening portion 13 are the first member.
It is restricted within the range (rotation limit range) in which it abuts against 3 ', and it cannot rotate in a wider range.

When the notched convex portion 21A is fitted inside the concave groove 12 and the first member 10 and the second member 20 are connected in a straight line (FIG. 5A), the concave groove protrusion 14 is formed. Is located at the center of the notch 22 in the circumferential direction of the notched convex portion 21 </ b> A, the first member and the second member are such that the protrusion 14 abuts either end of the notch 22. It is possible to rotate in both A and B directions within the above rotation limit range, and it is possible to spirally wind in both A and B directions.

On the other hand, the first member 10 and the second member 2
When 0 and 0 are connected in a straight line (FIG. 5C), if the protrusion 14 of the concave groove is in contact with one end of the notch 22 in the circumferential direction of the notched protrusion, it does not contact the C direction. It is rotatable within the rotation limit range until it abuts on the other end of the notch 22, and can be wound in a spiral shape, but it is not rotatable in the contacting D direction and is spiral in that direction. It cannot be wound up. In this case, for example, as shown in FIG. 5D, it is possible to spirally wind the upper part of the entrance / exit of the store or the like to open the entrance / exit of the store or the like, and pull it down to close the entrance / exit
Even if strong wind blows from outside while pulling down and closing the entrance, it is suitable for shutters that withstand the wind pressure and do not rotate toward the entrance.

In the case of the small-diameter convex portion 21B (FIG. 5B), the second
The member 20 includes both end portions 13 'of the opening 13 of the first member 10,
It is possible to rotate within a rotation limit range in which it abuts on 13 '. However, the center of rotation in this case is the center of the convex portion 21B which is eccentric from the center of the concave groove.

Further, as shown in FIGS. 6A and 6B, the parallel elongated side walls 11 and 11 of the same elongated first member 10 are provided with a plurality of (two) protrusions 14 and 14 described above. The recessed grooves 12, 12 having a shaped cross section are provided back to back, and the notched convex portions 21A and the small-diameter convex portions 21B are provided at the parallel side walls 23, 23 of the second member 20 so as to project back to back at the plate-like portion 51. May be. In the figure, both the first member and the second member are the main bodies 1 of the members.
Although 0'and 20 'have a hollow box-shaped cross-section, they may have a U-shape, an inverted U-shape, or a flat plate-shape cross-section.
In the case of a plate shape, it also serves as the plate-shaped portion 51 of the second member.

The plate-like portion 51 has a notched convex portion 21A.
Or for allowing a member having a notched convex portion 21A or a small-diameter convex portion 21B to fit into the concave groove 12 when the small-diameter convex portion 21B is fitted in the concave groove 12 so as to be rotatable in the concave groove 12 within a limited range. Is.

As shown in FIGS. 1A and 1B, the first member 1
0 is an inverted U-shaped or box-shaped hollow rectangular crotch member (box-shaped cross-section in the figure), and both side walls 11 and 11 thereof are provided with recessed grooves 12 having protrusions 14 back to back, and a second member 20 is provided. A plate-like connecting member having a plate-like shape and having notched convex portions 21A on both parallel edges thereof, and the plate-like connecting member rotatably connects two cauldron members to a predetermined width, It is laid on the floor or fitted in a shallow recess on the floor to remove mud, water, dust, etc. adhering to the back of people's footwear entering and leaving the building.

In order to effectively remove mud, etc., as shown in FIG.
As shown in FIG. 4, inverted L-shaped holding ridges 15, 15 facing each other are integrally provided on both sides of the upper wall of the cauldron, and both ridges 15,
15 and the upper surface 10 'of the cauldron, in the space formed by the bottom surface of the footwear back cleaning material 16 such as a brush, a carpet or a row of rubber ridges, which is slightly wider than the cleaning material. It is preferable to fit the base 16 'made of rubber, synthetic resin, metal or the like by sliding, and attach the footwear back cleaning material 16 on the upper surface of the cauldron member.

In this case, the holding projections 15 are provided on both ends of the cauldron member.
And 15 and the end face of the cauldron member are closed by an end face plate 18 formed of metal or plastic to prevent the base 16 'from coming out of the holding protrusions 15, 15 facing each other.
For that purpose, the retaining members 30 are provided on both sides of the end plate 18.
Insertion hole 1 through which the screw portion 32 of the screw, the outer cylinders 34 and 44 of the two-member type rivets 33 and 43, and the shaft portion of the rivet pin 41 pass
9 and 19 are opened, and the retaining member 30 is inserted into the concave groove 12 from each insertion hole, and the notched convex portion 21A and the small diameter convex portion 21B of the plate-like connecting member are inserted from the respective end portions of the concave groove. It prevents the screw 31 from coming off, and the head 31 'of the screw 31 and the outer cylinder 3
4, 44 collars 35, 45, rivet pin 41 head 4
At 1 ', the end plate may be fixed by abutting on each end of the cauldron member.

The end plate 18 has an upper surface for cleaning the back of the footwear 1.
Even in the case of a cauldron member that does not have opposing holding ridges 15, 15 because 6 is not attached, the inside of the rectangular cross section of the cauldron member is unintentionally exposed when it is laid on the floor as a floor mat. In order to prevent this, the end faces may be closed by being fixed to each end face of the coffin member. In this case, the end face plate can be lowered in height by the amount that the cauldron member does not project upward from the upper wall.

If the plate-shaped connecting member and the plate portion of the plate-shaped portion 51 are provided with openings 24 having an appropriate shape, mud and the like dropped between the coffin members can be dropped onto the floor or the bottom of the recess. .

In order to effectively remove mud on the soles of shoes,
Without attaching the above-mentioned separate footwear back cleaning material 16 on the upper wall of the cauldron member 10, a large number of irregularities parallel to the upper wall of the cauldron member like the cauldron members shown in FIGS. Article 17 ... may be provided integrally.

Further, when the end face plate 18 is molded from plastic, as shown in FIG. 4 (A), on the back surface of the end face plate,
When the shaft portions of the rivet pins 41, 41 that are driven into the recessed grooves 12, 12 of the left and right side walls 11, 11 of the cauldron member 10 are provided integrally rearward, the end face plate 18 of the cauldron member can be simultaneously moved by hammering the pins. It can be fixed by abutting on each end face, and the end face plate can be fixed and each end of the concave groove can be closed at the same time.

The lengths of the first member (joint member) 10 and the second member (plate-like connecting member) 20 need not be the same. For example, as shown in FIG. 7, the long cauldron member 10 may be connected by a plurality of short plate-shaped connecting members 20. In this case, in order to keep the plurality of short plate-like connecting members 20 at predetermined intervals in the longitudinal direction of the long cauldron member, the notched convex portion 21A and the small diameter convex portion 21B are provided.
25A and 25B with the same cross-sectional shape as (Fig. 7C)
As shown in FIG. 7B, is inserted into the concave groove 12 having the protrusions 14 on both side walls of the long cauldron member. Then, in order to prevent these spacers and short connecting members from coming out from the respective end portions of the concave groove, the respective end portions of the concave groove are closed by the retaining member 30, or the retaining members are applied to the respective end surfaces of the cauldron member. The end face plate 18 fixed by contact is closed. In this embodiment, the spacing 19 between the two first members 10 and 10 arranged in parallel by the second member 20 for the two members is the mud removed by the first member from the sole of the footwear, It plays the role of dropping dust and the like to the floor and the bottom of the floor depression.

The first member 10 described above is provided with the concave groove 12 having the C-shaped cross section having the protrusion 14 on both sides, and the second member 20 is provided.
Has been described as having the engaging convex portion 21 that is rotatably fitted in the concave groove 12, but in this case, it is necessary to separately form the first member and the second member. However, as shown in FIG. 8, the concave groove 12 is provided on one side of one elongated member 50 (in the figure, it has a rectangular cross section, but may be plate-shaped).
The engaging convex portion 21 (21A or 21B) is provided on the other side so as to project by the plate-shaped portion 51, and two of the same elongated members 50 are rotatably connected by the concave groove and the engaging convex portion 21A or 21B. May be. In this way, a single member with a groove on one side and an engaging protrusion on the other side is formed into a long length by metal or plastic such as aluminum or brass, and cut into the required length. Can be rotatably connected to the concave groove 12 by the engaging convex portion 21, and each end of the concave groove can be closed by the retaining member 30 to obtain a cage-shaped object having a necessary area for winding.

[0033]

For example, the outer diameter of the engaging projection of the connecting member is 3.
8 ~ 4.5mm, the inner diameter of the concave groove of the member is 4.4 ~ 5.0
Even if it is mm, since the concave groove has an inward projection, the screw thread has an outer diameter of 4 mm and the outer diameter of the head is around 7 mm. Can be easily screwed into each end of the recessed groove on both side walls of the shaft, or the rivet pin can be tapped easily with a slight force, or a two-member rivet can be inserted and split with multiple slits in its outer cylinder. The distal end portion is easily inflated to fill each end portion of the concave groove to prevent the engaging convex portion of the connecting member rotatably fitted inside the concave groove from coming out of the concave groove. End plates can be fixed to both ends of the cauldron.

[Brief description of drawings]

FIG. 1A is an explanatory view of a state in which a screw (tapping screw) is screwed into each end portion of a groove according to the present invention to close the groove;
(B), (C) is sectional drawing of two examples of the screwed state.

FIG. 2 (A) is an explanatory view of a state in which each end of the groove is closed by a splitting type two-member rivet according to the present invention, and FIG. 2 (B) is a state in which the rivet is being inserted into the groove. (C) is an explanatory view of a state in which the shaft is pulled forward and shredded, and the end of the concave groove is closed with a rivet. (D) is d- of (C).
The expanded sectional view in the d line, (E) is an expanded sectional view of the state which closed the edge part of the concave groove different from (D).

FIG. 3A is an explanatory view of a state where each end of the groove is closed by a driving type two-member rivet according to the present invention, and FIG. 3B is a state in which the rivet is being inserted into the groove. Illustration,
(C) is an explanatory view of a state in which the shaft is pulled forward and shredded, and the end of the concave groove is closed with a rivet, (D) is an enlarged cross-sectional view taken along the line d-d of (C), and (E) is ( The expanded sectional view of the state which closed the edge part of the groove different from D).

FIG. 4A is an explanatory view of a state where a rivet pin is hit and closed at each end of a groove according to the present invention, and FIGS. 4B and 4C.
FIG. 6 is an enlarged cross-sectional view of a state in which a rivet pin is tapped into a different groove to close the end of the groove.

5 (A), (B), and (C) are explanatory views of three states in which an engaging convex portion is rotatably fitted in a concave groove having a convex portion,
(D) is a schematic view seen from the side of a closed state of a lift type doorway opening / closing shutter to which the state of (C) is applied.

6A and 6B are explanatory views showing two types of connection states of a first member having concave grooves on both sides and a second member having engaging convex portions on both sides.

FIG. 7A is a plan view in which a part of a child-like floor mat of a cage in which a long first member is connected by a plurality of short second members is shown in section.
(B) is an enlarged cross-sectional view taken along line B-B of the same, and (C) is a perspective view of a spacer used.

FIGS. 8A and 8B are explanatory views showing two types of connected states of a single member having a concave groove on one side and an engaging convex portion on the other side.

[Explanation of symbols]

10 First member (coffin member) 11 Side wall of the first member 12 groove 14 Projection in the groove 20 Second member (connecting member) 21 engaging protrusion 21A Notched convex part 21B Small-diameter convex part 22 notches 30 retaining member 31 Screw for retaining member 33 Two-member rivet for retaining member 41 Pin for retaining member

Claims (11)

[Claims] 1. A retaining member for closing the insides of both ends of the concave groove with a concave groove having a C-shaped cross section and an engaging convex portion that is inserted into the concave groove from one end and rotatably fitted. In the method of assembling the concave-convex fitting portion in which the engaging convex portion is prevented from coming off from both ends of the concave groove, an integral projection is provided inside the concave groove, and the retaining member is a projection inside the concave groove. A method for assembling a concavo-convex fitting portion, characterized in that it is a screw that is screwed into the tip portion of and the part of the inner circumference of the concave groove. 2. A retaining member for closing the insides of both ends of the concave groove with a concave groove having a C-shaped cross section and an engaging convex portion which is inserted into the concave groove from one end and rotatably fitted therein. In the method of assembling the concave-convex fitting portion in which the engaging convex portion is prevented from coming off from both ends of the concave groove, an integral projection is provided inside the concave groove, and the retaining member is provided on the outer cylinder and the outer cylinder. After inserting the outer cylinder into the groove while contacting the tip of the protrusion in the groove and a part of the inner circumference of the groove, the outer cylinder is inserted into the groove by the shaft. A method for assembling a concavo-convex fitting portion, wherein the outer cylinder is a two-member type rivet that is inflatable. 3. A retaining member for closing the insides of both ends of the concave groove with a concave groove having a C-shaped cross section and an engaging convex portion inserted into the concave groove from one end and rotatably fitted therein. In the method of assembling the concave-convex fitting portion in which the engaging convex portion is prevented from coming off from both ends of the concave groove, an integral projection is provided inside the concave groove, and the retaining member is a projection inside the concave groove. A method for assembling a concavo-convex fitting portion, characterized in that it is a rivet pin that is tapped while deforming the tip end portion and a part of the inner circumference of the concave groove. 4. The method for assembling a concavo-convex fitting portion according to claim 1, wherein a protrusion of the concave groove is provided on an outer periphery of an engaging convex portion that fits inside the concave groove. A method for assembling a concave-convex fitting part, characterized in that a notch is provided in the circumferential direction for receiving the rotatably in the circumferential direction. 5. The method for assembling a concave-convex fitting portion according to claim 1, wherein the diameter of the outer periphery of the engaging convex portion fitted inside the concave groove is within the concave groove. A method for assembling a concavo-convex fitting portion, characterized in that the outer periphery is in contact with the tip of the protrusion and a part of the inner periphery of the groove. 6. The method for assembling a concavo-convex fitting portion according to claim 1, wherein a concave groove having a C-shaped cross section is provided on one of both parallel sides of the elongated member, and an engaging convex portion is provided on the other side. A method for assembling a concavo-convex fitting portion, which is characterized by being provided. 7. The method for assembling a concavo-convex fitting portion according to claim 1, wherein recessed grooves having a C-shaped cross section are provided back to back on both parallel side walls of the elongated first member and engaged. The method for assembling a concavo-convex fitting portion, wherein the convex portions are provided back to back on both parallel side walls of the elongated second member. 8. The method for assembling the concave-convex fitting portion according to claim 7, wherein the first member is a rectangular cauldron member, and the second member is a plate-like connecting member. How to assemble. 9. The method for assembling the concavo-convex fitting portion according to claim 8, wherein an opening is provided in the plate portion of the plate-like connecting member. 10. The method for assembling a concavo-convex fitting part according to claim 8, wherein end plates that contact the end faces of both ends of the cauldron member are provided, and each end face plate has a cauldron member. Insertion holes for inserting the retaining members for closing the respective ends of the concave grooves of the C-shaped cross section of the both side walls of the above are provided on both sides, and the retaining members are inserted from the inserting holes into the concave grooves of the side walls of the cauldron member. A method of assembling a concavo-convex fitting portion, characterized in that an end face plate is brought into contact with and fixed to each end face of a cauldron member. 11. The method for assembling the concavo-convex fitting part according to claim 8, wherein end plates that contact the end faces of both ends of the cauldron member are provided, and each end face plate has a cauldron member. Integral pins are provided on both sides of the concave groove of the C-shaped cross section on both side walls of the above, and the above pins are driven into the concave grooves of both side walls of the cauldron member, and the end plates are brought into contact with the respective end faces of the cauldron member. A method for assembling a concavo-convex fitting part, characterized in that it is fixed.