JP2004131980A - Inner frame of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door frame of which the vertical frame and the horizontal frame can be easily connected. <P>SOLUTION: In an inner frame of a door formed by framing the vertical and horizontal frames (1, 2) into a rectangle by the use of a connector (R), the end of one side frame is fitted at a right angle to the end of the other side frame and through holes (11e, 21e) are formed in ends of each frame so that an engaging hole (S) is formed in the joint of both frames. The connector is fitted in the engaging hole and constituted of a fastener body (7) having an insertion hole (72) formed of a freely openable leg piece (73) and a pin (8) put in the insertion hole to widen the leg piece. By inserting the pin into the insertion hole in a state that the fastener body is fitted in the engaging hole, the leg piece of the insertion hole is press-fitted to the inner peripheral edge of the engaging hole and retained thereon to connect both frames. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an inner frame disposed inside a panel such as a door.
[0002]
[Prior art]
[Patent Document 1]
JP-A-11-117636
Normally, a door panel is composed of a rectangular inner frame, various liners and core materials fixed and loaded on the inner peripheral edge of the inner frame, and front and back materials covering these.
In the inner frame, the ends of the vertical member and the horizontal member are joined at right angles to each other and joined, and a method such as welding or an engagement method has been adopted as the joining means.
[0004]
In the latter joining method, as in the invention described in Japanese Patent Application Laid-Open No. 11-117636, drawing is performed on the end of a vertical member to form a stepped surface that is bent inward by the thickness of the vertical member. And an engaging claw that protrudes outward from the step-down surface is provided, and an engaging hole with which the engaging claw is engageable is provided at an end of the cross member, and the end of the vertical member is horizontally It is to be fitted inside the end of the material and to be integrally connected by engaging the engaging claw with the engaging hole.
[0005]
[Problems to be solved by the invention]
However, according to the above joining method, when the vertical member is fitted to the horizontal member, the vertical member is pushed in against the frictional force generated between the engaging claw formed on the vertical member and the inner surface of the horizontal member. Took a lot of power. In addition, when an impact is applied to the joint, there is a problem that the engaging claw is disengaged from the engaging hole, and the joining between the two members is released.
[0006]
[Means for Solving the Problems]
The present invention has been made in view of the above-described circumstances, and in an inner frame of a door formed by vertically and horizontally framing a frame in a rectangular shape using connecting means, an end of one side frame is formed. The other end of the frame is fitted into the end of the frame at right angles, and a through hole is formed at the end of each frame so as to form an engagement hole at the joint of the two frames. A fastener main body having an insertion hole formed of a leg piece that can be inserted and expanded, and a pin that is inserted into the insertion hole and expands the leg piece, wherein the fastener main body is inserted into the engagement hole. By inserting the pin into the insertion hole in this state, the legs of the insertion hole are pressed against the inner peripheral edge of the engagement hole to join the two frames.
[0007]
Further, each of the vertical and horizontal frames has a pair of parallel surfaces and a vertical surface orthogonally connected at one end of the parallel surfaces, and is opposed to one of the parallel surfaces at a predetermined interval. Forming a pair of bent pieces, forming a slit portion with the bent piece and the parallel surface on the one side, while forming a plug piece that fits into the slit section on the liner, The liner member was fixed to the frame by fitting into the slit.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
In FIG. 1, F is a door frame, 1 is a vertical frame, 2 is a horizontal frame, 3 is a door closer liner, 4 is a door chain liner, 5 is a lock liner, and 6 is a door stop liner. The door frame F is a rectangular frame formed by joining the ends of the vertical frames 1 and 1 and the horizontal frames 2 and 2 at right angles. Metal liners 3, 4, 5, 6 and a paper core (not shown) attached to the door panel are fixed and loaded on the inner peripheral edge of the door frame F, and the door panel is formed by covering these with the front and back plates.
[0009]
The vertical frame 1 is a metal member having a substantially U-shaped cross section having upper and lower surfaces 11a and 11b and a vertical surface 12 parallel to each other. At both ends of the vertical frame 1, a vertical surface 12 is cut out, and upper and lower surfaces are bent to form stepped surfaces 11c and 11d. A square through hole 11e is formed in the step drop surface 11c at a substantially central portion, while a circular locking hole 11f is formed in the step drop surface 11d.
[0010]
The horizontal frame 2 is a metal member having a substantially U-shaped cross section having upper and lower surfaces 21 a and 21 b and a vertical surface 22 which are parallel to each other. A stepped surface 21c bent inward by drawing is formed on an upper surface 21a at both ends of the horizontal frame 2, and a through hole 21e having the same shape as the above-mentioned 11e is formed in the stepped surface 21c. . On the other hand, locking projections 21f are formed on lower surfaces 21b at both ends of the horizontal frame by driving a punch or the like.
[0011]
The bent dimension of the stepped surface 21c of the horizontal frame 2 is bent inward from the upper surface 21a of the intermediate portion by the thickness tf of the flange portion of the fastener body described later.
On the other hand, the bending dimension of the stepped surface 11c of the vertical frame 1 is bent inward by the sum of the thickness t of the horizontal frame 2 and the thickness tf of the horizontal frame 2, and the stepped surface 11d is formed of the thickness t of the horizontal frame. It is bent inward by the minute.
In the vertical and horizontal frames 1 and 2 configured as described above, the ends 11c and 11d of the vertical frame 1 are fitted inside the ends 21c and 21b of the horizontal frame, and the locking protrusion 21f and the locking hole 11f are connected. Lock and temporarily fix both frames. In this state, the through holes 11e and 21e formed in both frames coincide with each other to form the engagement hole S.
[0012]
A stopper R made of synthetic resin is fitted into the engagement hole S, and the vertical and horizontal frames are joined. The stopper R is composed of a fastener body 7 that fits into the engagement hole S and a pin 8 that fits into an insertion hole of the fastener body 7.
[0013]
In FIG. 3, the fastener body 7 has a rectangular flange portion 71, an insertion hole 72 formed at a substantially central portion of the flange portion 71, and a rear side of the flange portion 71 from the outer periphery of the insertion hole 72 toward the center. And four inclined leg pieces 73. The insertion hole 72 is formed by the leg piece 73 to form a pyramid-shaped continuous hole from the front side to the back side of the flange portion 71. The leg piece 73 has an inclined side 73a that can be opened outward and a locking claw 73b at the tip of the inclined side 73a.
[0014]
In FIG. 4, the pin 8 has a conical arrowhead portion 81 at the tip, a tapered portion 82 expanding rearward (rightward in the figure) from the rear end surface of the arrowhead portion 81, and an expanding end of the taper portion 82. A locking groove 83 is formed continuously to the portion, and a cylindrical base end portion 84 is formed at the rearmost end. Further, a partition 85 is formed in a cross shape from the rear end of the arrowhead portion 81 to the base end portion 84. When the pin 8 is inserted into the insertion hole of the fastener body 7, the partition plate 85 is inserted into the gap 74 formed in the insertion hole to guide the tip of the leg to move on the tapered portion 82, and The rotation of is regulated.
[0015]
Hereinafter, a method of joining the vertical and horizontal frames will be described with reference to FIG.
First, the fastener main body 7 is fitted into the engagement hole S formed in the joint portion between the vertically and horizontally frames 1 and 2 in the temporarily fixed state. Next, the arrowhead 81 of the pin 8 is inserted into the insertion hole 72 formed in the fastener main body 7. At this time, the leg 73 is expanded to the arrowhead portion 81, and the distal end of the leg 73 is gradually expanded along the tapered portion 82, and the base end 84 is completely inserted into the insertion hole 72 of the fastener body. When fitted, a locking claw 73b formed at the tip of the leg piece is locked in a locking groove 83 formed continuously with the tapered portion 82.
When the pin 8 is completely fitted into the fastener body 7, the inclined leg 73a of the leg piece 73 becomes larger in diameter than the engagement hole S and presses against the inner peripheral edge of the engagement hole S. It will be firmly fixed to the hole S.
In addition, the locking claw 73b of the leg 73 is locked in the engaging groove 83 of the pin 8, thereby restricting the pin 8 from coming out of the insertion hole.
Further, since the joining portion between the two frames is stepped down by the thickness tf of the flange portion 71 of the fastener main body due to the step-down surfaces 11c and 21c, when the fastener main body is fitted, the upper surface of the other frame and the flange portion are connected. Are in the same plane, so that the surface plate can be covered well.
As described above, in the inner frame F according to the present invention, the joining of both members is completed only by pushing the fastener body 7 and the pin 8 into the engaging holes S formed in the joining portions of the vertical and horizontal frames. I have.
In the present embodiment, the locking projections 11f and the locking holes 21f are locked and temporarily fixed on the lower surfaces of the vertical and horizontal frames, but the engagement holes S are formed at the joints as in the upper surface side. Then, the joining may be performed using the stopper R. Further, a metal fastener may be used instead of the stopper R made of resin.
[0016]
Next, a structure for fixing the liners 3, 4, 5, and 6 to the frames 1 and 2 will be described with reference to FIGS.
In FIG. 6A, the door closer liner 3 has a rectangular door closer mounting portion 31 and an insertion piece 100 which is stepped down by one plate thickness of the horizontal frame 2 at one end of the door closer liner 31. Is provided with a circular locking hole 100a.
In FIG. 6B, the door chain liner 4 has a substantially rectangular door chain mounting portion 41 and an insertion piece 100 that is stepped down by one plate thickness of the vertical frame 1 at one end of the door chain liner 4. A circular locking hole 100a is formed in the insert 100.
In FIG. 6C, the lock liner 5 has a main body 51 having a substantially U-shaped cross section, and an insertion piece 100 that is stepped down by the thickness of the vertical frame 1 at a substantially central portion of the upper surface on the open end side of the main body 51. The insertion piece 100 is provided with a circular locking hole 100a.
In FIG. 6D, the door stop liner 6 has a rectangular reinforcing portion 61 and an insertion piece 100 that is stepped down by the thickness of the horizontal frame 2 at one end of the 61, and the insertion piece 100 is provided with a circular locking hole 100a.
[0017]
In FIG. 6 (e), the vertical frame 1 is formed at a predetermined position on the upper surface 11a by pressing at a predetermined interval so that the pair of cut and raised pieces 11g, 11g have the same width as the insertion piece 100. A slit w is formed by the cut and raised pieces 11g, 11g and the upper surface 11a between the two pieces 11g, 11g. Further, a projection 11h is formed on the upper surface 11a of the slit portion w so as to face downward.
Although not shown, the horizontal frame 2 is also formed at a predetermined position on the upper surface 21a by pressing at a predetermined interval so that the pair of cut and raised pieces 21g and 21g have the same width as the insertion piece 100. The slit portion w is formed by the cut and raised pieces 21g, 21g and the upper surface 21a. A projection 21h is formed on the upper surface 21a of the slit portion w so as to face downward.
[0018]
To fix the various liners 3 to 6 configured as described above to the vertical frame 1 or the horizontal frame 2, insert the insertion pieces 100 of the respective liners into slits w formed in the vertical frame 1 or the horizontal frame 2. Then, the locking projections 11h (21h) are locked by the locking holes 100a to be integrally connected. Further, if necessary, both the cut and raised pieces 11g (21g) can be caulked with a tool such as pliers to more firmly fix the liner member.
[0019]
【The invention's effect】
In the door frame according to the present invention configured as described above, when joining the vertical and horizontal frames, it is only necessary to insert the stopper into the engaging hole formed at the joint, and it is easy without special tools or skill. In addition, since both frames can be securely joined with a small force, the working efficiency can be greatly improved.
Further, when the liner is mounted on the frame, it is only necessary to insert the insertion piece formed on the liner into the slit formed on the frame, so that the mounting operation can be greatly improved.
[Brief description of the drawings]
FIG. 1 is an overall view of an inner frame of a door.
2A is a perspective view showing a joint between a vertical frame and a horizontal frame, FIGS. 2B and 2C are a plan view and a front view showing an end of the horizontal frame, and FIGS. It is the top view and front view which show the edge part of a vertical frame.
FIG. 3A is a front view of a fastener main body, and FIGS. 3B and 3C are a plan view and a bottom view thereof.
4A is a front view of a pin, and FIG. 4B is a cross-sectional view taken along line aa of FIG. 4A.
FIG. 5 is a partially omitted sectional view taken along line ff of FIG. 1;
6 (a) is a sectional view taken along line aa of FIG. 1, (b) is a sectional view taken along line bb, (c) is a sectional view taken along line cc, and (d) is a sectional view taken along line dd. (E) is a sectional view taken along line ee.
[Explanation of symbols]
Reference Signs List 1 vertical frame 2 horizontal frame 7 fastener main body 72 insertion hole 73 leg piece 8 pin 11e, 21e through hole S engagement hole R connecting means (stopper)

Claims (2)

In an inner frame of a door formed by vertically and horizontally framing a frame in a rectangular shape using a connecting means, an end of one frame is fitted at right angles to an end of the other frame, and both frames are fitted. A through hole is formed at an end of each frame so as to form an engagement hole at the joint, and the connecting means is inserted into the engagement hole and has a through hole formed of a leg that can be expanded. A main body, and a pin that is inserted into the insertion hole and expands the leg piece, and the pin is inserted into the insertion hole with the fastener main body inserted into the engagement hole, thereby forming the insertion hole. An inner frame for a door, wherein the two pieces are joined by pressing and holding a leg piece against an inner peripheral edge of the engagement hole. Each of the vertical and horizontal frames has a pair of parallel surfaces and a vertical surface orthogonally connected at one end of the parallel surfaces, and is opposed to one of the parallel surfaces at a predetermined interval. A pair of bent pieces is formed, and a slit portion is formed by the bent piece and the parallel surface on the one side, while an insert piece that fits into the slit portion is formed on the liner, and the insert piece is formed. 2. The inner frame for a door according to claim 1, wherein the liner member is fixed to the frame by fitting the liner member into the slit portion.

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