JP3083129B2 - Connecting tool between formwork and separator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a separator to a concrete form or the like in which a heat insulating material is mounted on the inside of the form, in order to connect the separator to the form. is there.

[0002]

2. Description of the Related Art As this type of connecting tool, a metal plate is pressed into a box shape, a separator fitting recess is formed in a front plate portion, and a nut or bolt head is rotated inside a rear plate portion. There is known a box-shaped press-formed coupling tool in which a screw hole of a nut is connected to a through hole provided in a rear plate portion and a screw shaft portion of a bolt projects rearward from the rear plate portion. .

[0003] In such a box-shaped press-connecting tool, the inner end screw shaft portion of the refill shaft penetrating the formwork is screwed into the screw hole of the nut from the through hole of the rear plate portion, or the bolt is connected to the bolt. Penetrate the screw shaft part into the mold, screw the mold fastening metal to the outer end screw shaft part of the refill shaft or the screw shaft part of the bolt protruding outside the mold, and place the coupling tool inside the mold. Fix it. Then, the separator is press-fitted into the separator fitting recess so as to fit the separator head into the fitting, so that the separator head fits into the fitting. there were.

[0004]

That is, in the above-described conventional box-shaped press-molding connecting tool, the protrusion for retaining the separator, which is required beside the entrance of the separator fitting recess, is as follows.
It must be configured to have elasticity in itself by cutting and raising tongues, etc., but due to size restrictions, it can be easily elastically deformed by the separator pressed into the separator fitting recess. In addition, it was impossible to form a retaining projection having a large covering amount with respect to the fitted separator.

[0005] Therefore, while the work of fitting and locking the separator is difficult, the effect of preventing the fitted separator from falling off is low, and the separator may come off unexpectedly in use. An object of the present invention is to provide a connecting tool between a mold and a separator that does not have such a problem.

[0006]

A connector for connecting a mold and a separator according to the present invention for achieving the above object is provided with a reference numeral of an embodiment to be described later, A pair of left and right side plate portions (2a, 2b) which are separately bent and connected forward from the board portion (1), and a pair of side plate portions (2a, 2a, 2b).
2b) is provided with a pair of locking plate portions (3a, 3b) which are bent inward from the tip of 2b) and overlap with each other back and forth, and a screw hole (4a) provided in the substrate portion (1). Are provided with cutouts (8a, 8b) that partially overlap each other from the upper side thereof,
The overlapping portion of the notches (8a, 8b) forms a separator fitting recess (7) whose width is increased by the pair of side plates (2a, 2b) moving closer to each other. (7) is formed with a protrusion (6) for preventing the separator from coming off at the side of the entrance, and when the separator (17) is pressed down into the separator fitting recess (7), the pair of side plate portions (2) is formed.
a, 2b) once approach each other against elasticity and then return to elastic, and then return to the separator (17) with the projection (6) for preventing the separator from coming off, and the head of the separator (17) (17a) is the pair of side plate portions (2
a, 2b).

In carrying out the present invention, the screw hole (4a) is a screw hole of a nut (4) fitted non-rotatably between a pair of side plates (2a, 2b). Are a pair of upper and lower tongue pieces (9a, 9b) formed on the substrate portion (1) and the pair of side plate portions (2).
a, 2b) formed on each of the tongue pieces (10
a, 10b) can be held at a position inside the substrate portion (1).

Further, instead of providing the screw hole (4a) in the substrate portion (1) as described above, a bolt (20) can be used. In this case, the head (2) of the bolt (20)
0a) is non-rotatably held between the pair of side plate portions (2a, 2b) at a position adjacent to the substrate portion (1);
The screw shaft portion (20b) of the bolt (20) may be protruded rearward from the substrate portion (1).

Further, the screw shaft portion (2) of the bolt (20)
0b) is fitted into a notch recess (21) formed upward from the lower side of the substrate portion (1), and is prevented from falling off by a projection (22) formed in the notch recess (21). The head (20a) of the bolt (20)
The board portion is fitted non-rotatably between the pair of side plate portions (2a, 2b), and the cut-and-raised tongue pieces (10a, 10b) formed on each of the pair of side plate portions (2a, 2b). It can be held at the inner position of (1).

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 4, P denotes a connector according to the present invention, and A pair of left and right side plate portions 2a, 2b each of which is bent and connected separately to the front;
A pair of locking plate portions 3a, 3b which are bent inward from the ends of the pair of side plate portions 2a, 2b and which overlap with each other back and forth.
And a nut 4. A pair of locking plate portions 3
Notches 8a, 8b forming separator fitting recesses 7 provided with projections 6 for preventing separators from coming off
Are formed from the upper side.

That is, as shown in FIGS. 1B and 1C, the pair of locking plate portions 3a and 3b are provided with cutout portions 8a and 8b which partially overlap each other from the upper side thereof. , 8b form a separator fitting recess 7 whose width is widened by the pair of side plates 2a, 2b moving closer to each other, and one notch on one side of the entrance of the separator fitting recess 7. The protrusion 6 for retaining the separator formed in 8a protrudes. The projections 6 for preventing the separator from coming off may be formed on both the notches 8a and 8b so as to be arranged on both sides of the entrance of the separator fitting recess 7.

The nut 4 is non-rotatably fitted between the pair of side plates 2a, 2b, and a pair of upper and lower tongues 9a, 9b formed on the substrate 1 and a pair of side plates 2a, 2b.
a, tongue pieces 10a, 1 formed on each of
0b, a through hole 11 is provided in the substrate 1 so as to be held at a position adjacent to the substrate 1 and connected to the screw hole 4a.

Reference numeral 12 denotes a concrete formwork, on which a heat insulating material 13 having a predetermined thickness is stuck and mounted.
And the heat insulating material 13 are provided with concentric through holes 12a and 13a. Reference numeral 14 denotes an extension shaft,
A cylindrical spacer 15 having a length substantially equal to the thickness of
The inner end screw shaft portion 14a is screwed and connected to the screw hole 4a of the nut 4 via the through hole 11 of the connecting tool P. The extension shaft 14 and the cylindrical spacer 15 are used together with the heat insulating material 13.
Through the through hole 13a from the inside, and
The outer end screw shaft portion 14b is projected outward from the through hole 12a of the formwork 12, and the formwork fastening bracket 16 is screwed and fastened to this.
The frame 12 and the heat insulating material 13 are sandwiched between the mold fastening hardware 16 and the substrate portion 1 of the connecting tool P, and the connecting tool P is connected to the heat insulating material 1.
Fix inside 3.

At this time, the connecting tool P is positioned so that the separator fitting recess 7 is opened upward. When the connecting shaft 14 is formed with the rotation stopper flange 14c, the connecting tool P is positioned. Form-stopping flange 14c is attached to form 1
By engaging the inner surface of the second through hole 12a, the posture of the connector P can be determined via the extension shaft 14. It should be noted that the formwork fastening member 16 is screwed and fastened, and the formwork 12 is connected between the formwork fastening member 16 and the substrate portion 1 of the connecting member P.
The tubular spacer 15 prevents the heat insulating material 13 from being unduly compressed when sandwiching the heat insulating material 13 with the heat insulating material 13.

Reference numeral 17 denotes a separator, which is formed by screwing a nut 19 to an end of the shaft rod 18. The nut 19 forms a separator head 17 a.
May be a rivet type in which a bulging head is integrally formed at the end of the rivet. The separator fitting recess 7 formed by the overlapping portions of the notches 8a and 8b provided on the locking plate portions 3a and 3b of the connecting tool P
Is smaller than the diameter of the shaft rod 18, and the width is further reduced at the portion where the separator retaining retaining projection 6 is provided. Then, in order to easily press the shaft 18 of the separator 17 into the separator fitting recess 7, the separator fitting recess 7 is used.
The upper end of one side edge of each of the notches 8a and 8b forming the entrance above the retaining projection 6 is cut obliquely.

When the separator 17 is connected to the connector P, the shaft 18 is fitted to the separator fitting recess so that the head 17a of the separator 17 is fitted between the pair of side plates 2a and 2b of the connector P. 7. Press down into 7 from above. At this time, with the press-fitting of the shaft rod 18, the pair of side plate portions 2a and 2b move closer to each other against the elasticity, the separator fitting recess 7 expands, and the shaft rod 18 fits into the separator fitting recess 7. Will be. When the shaft 18 passes through the position of the separator retaining protrusion 6, the separator fitting concave portion 7 expands to the maximum, and thereafter, the pair of side plate portions 2a and 2b elastically return, as shown in FIG. 1C. The projection 6 for preventing the separator from falling off is placed on the shaft 18 fitted to the lower end of the separator fitting recess 7.

At this time, the shaft rod 1 fitted to the lower end of the separator fitting recess 7 by the elastic restoring force of the pair of side plates 2a, 2b.
8 is held, but the shaft rod 18 does not come out of the separator fitting concave portion 7 by the separator retaining stopper 6, so that the width of the separator fitting concave portion 7 is determined by the diameter of the shaft rod 18. The width at the position of the separator retaining stopper 6 may be made smaller than the diameter of the shaft 18.

The other end of the separator 17 connected to the connecting tool P as described above is connected to the other formwork which forms a concrete casting space with the formwork 12 (heat insulating material 13) as is well known in the art. The form plate 12 is spread outward by the concrete poured into the concrete placing space, and the locking plate portion overlapping the connecting tool P connected to the form form 12 as described above. This is prevented by the engagement between the separator heads 3a and 3b and the separator head 17a. At this time, the separator head 17a is connected to the pair of side plate portions 2a, 2
b is spread outward, and since the pair of side plates 2a and 2b expands so as to reduce the width of the separator fitting recess 7, both locking plates forming the separator fitting recess 7 are formed. The side edges of the cutout portions 8a and 8b of the portions 3a and 3b hold the separator shaft 18 more firmly, and there is no possibility that the separator head 17a is detached from the connector P. Of course, the separation of the separator shaft 18 upward from the separator fitting recess 7 is surely prevented by the separator retaining retaining projection 6.

In the above embodiment, the nut 4 is held by the connecting member P. However, as shown in FIG.
Can be held by the connecting tool P, and the screw shaft portion 20b of the bolt protruding from the connecting tool P can be used instead of the extension shaft 14 of the above embodiment. In this case, as shown in FIG. 6, a notch concave portion 21 is formed in the substrate portion 1 upward from the lower side thereof, and the screw shaft portion 20b of the bolt 20 is fitted into the notch concave portion 21 from below. The bolt head 20a is non-rotatably fitted between the pair of side plates 2a and 2b, and the bolt screw shaft portion 20b can be prevented from coming off by the protrusion 22 formed in the cutout recess 21. In order to stop the bolt head 20a from moving away from the substrate 1, a pair of side plates 2a, 2b is provided.
The cut-and-raised tongue pieces 10a and 10b formed on each of
The bolt head 20a is held at a position adjacent to the substrate unit 1.

In the embodiment shown in FIGS. 1 and 2, a tubular spacer 15 is added to the shaft 14 (or the bolt screw shaft portion 20b) in order to prevent the heat insulating material 13 from being unduly compressed.
However, as shown in FIG. 7, by increasing the size of the substrate portion 1 to increase the area in contact with the heat insulating material 13,
It is also possible to omit the cylindrical spacer 15. Of course, the connecting tool P of the present invention is a mold 1 in which the heat insulating material 13 is not mounted.
2 can also be used. In this case, a short extension shaft 14 may be used together, or the bolt screw shaft portion 2 may be used.
What is necessary is just to attach the short bolt 20 of 0b to the coupling tool P.

[0021]

As described above, according to the connecting tool between the mold and the separator of the present invention, the mold (12) is formed by utilizing the screw holes (4a) provided in the substrate (1). The separator (17) can be connected to the formwork (12) by fitting the separator (17) into the separator fitting recess (7). A notch (8a, 8) provided in a front end locking plate (3a, 3b) of a pair of left and right side plates (2a, 2b) bent and connected from the substrate (1).
b), and a position which becomes a fulcrum of elastic deformation of both locking plate portions (3a, 3b) when press-fitting the separator (17) into the separator fitting concave portion (7). The base position of the side plate portions (2a, 2b) sufficiently distant from the fitting recess (7) can be set.

Accordingly, even if the iron plate constituting the connecting member (P) is relatively thick, the separator retaining retaining projection (6) provided on the side of the entrance of the separator fitting recess (7) with respect to the separator (17). Even if the cover margin is large, the separator (17) is inserted into the separator fitting recess (7).
Can be easily performed with a relatively light pushing force. In addition, as described above, the margin of the projection (6) for preventing the separator from coming off with respect to the separator (17) is increased, so that the separator (17) can be prevented from unexpectedly coming out of the separator fitting recess (7). Can be prevented.

When the separator (17) is press-fitted into the separator fitting recess (7), the pair of side plates (2a, 2b) move closer to each other, and the width of the separator fitting recess (7) is increased. When the separator (17) and the connector (P) are to be separated from each other by a large force in the axial direction of the separator in a use state, the pair of side plates (2a, 2b) is pushed and spread. However, as a result, the separator fitting concave portion (7) is deformed so that its width is narrowed, so that the separator (17) is more firmly held, and the separator (17) is pulled out from the connecting member (P). There is almost no fear of being caught.

Further, the substrate portion (1) can be formed in any size and shape. Therefore, as described in the embodiment, when the substrate portion (1) is used by being connected to the form with heat insulating material, the heat insulating material can be used. A connector that does not require the use of a spacer for preventing undesired compression of the connector can be simply and inexpensively constructed.

According to the second aspect of the present invention, the screw hole (4a) used for the connecting means with the mold (12) is sufficiently formed in comparison with the case where the screw hole (4a) is directly formed in the substrate portion (1). The screw hole (4a) having the required depth and the required joint strength can be easily and securely held at the required position of the coupling tool (P) using the ready-made nut (4) without relying on welding or the like. , Which can reduce manufacturing costs.

According to the third aspect of the present invention, since the bolt (20) used for connecting the frame (12) to the mold (12) is attached to the connecting tool (P) itself, the use is further enhanced. Become simple. In particular, in this case, according to the configuration described in claim 4, the bolt (20) can be securely and easily held at a required position of the coupling tool (P) without relying on welding or the like, and assembling cost is reduced. Can be reduced.

[Brief description of the drawings]

1A is a partial cross-sectional plan view showing a use state, FIG. 1B is a partial longitudinal front view showing a separator and a connecting member, and FIG. 1C is a state in which the separator is fitted and locked. It is a partial vertical front view which shows a coupling tool.

FIG. 2 is a longitudinal sectional side view of FIG. 1A.

FIG. 3 is a side view of the coupler.

FIG. 4 is a vertical sectional front view of the coupling tool.

FIG. 5 is a plan view showing a modified example of the coupler.

FIG. 6 is a rear view of FIG.

FIG. 7A is a plan view showing still another modified example of the coupler, and FIG. B is a front view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate part 2a Side plate part 2b Side plate part 3a Locking plate part 3b Locking plate part 4 Nut 6 Separator retaining protrusion 7 Separator fitting concave part 8a Notch part of locking plate part 8b Notch of locking plate part Part 9a Cut-and-raised tongue piece 9b Cut-and-raised tongue piece 10a Cut-and-raised tongue piece 10b Cut-and-raised tongue piece 11 Through-hole in substrate portion 12 Formwork 13 Heat-insulating material 14 Reinforcement shaft 15 Cylindrical spacer 16 Formwork fastener 17 Separator 17a Separator head Part 18 Separator shaft rod 20 Bolt 20a Bolt head 20b Bolt screw shaft part 21 Notch concave part 22 Bolt retaining projection

Claims (4)

(57) [Claims] A pair of left and right side plate portions (2a, 2) which are separately bent and connected forward from the substrate portion (1).
b), a pair of locking plate portions (3a, 3b) that are bent inward from the ends of the pair of side plate portions (2a, 2b) and overlap with each other back and forth, and are provided on the substrate portion (1). Screw
Comprising a hole (4a), wherein the pair of locking plate portions (3a, 3b), from its upper edge, notches (8a, 8b) which partially overlap each other are provided, these double-pole-outs (8a, the overlapping portion of the 8b), the pair of side plate portions (2a, 2b) a separator fitting recess width spreads (7) is formed by the approaching movement to each other, the said separator fitting recess (7), the Protrusions on the side of the entrance for retaining the separator (6)
There is formed, when pressed downward into the separator (17) the separator fitting recess (7), said pair of side plate portions (2a, 2
b) elastically restored after the approaching movement to each other once against the elastic, the separator retaining projections over the separator (17) (6) overlies, the separator (1
Head (17a) is the pair of side plate portions of 7) (2a, 2
b) A connector for connecting the mold and the separator to be fitted and held therebetween. 2. The screw hole (4a) is provided with a pair of side plate portions (2).
a, screw of nut (4) fitted non-rotatably between a and 2b)
A hole, and the nut (4) is provided in the substrate (1).
A pair of upper and lower cut-and-raised tongue pieces (9a, 9b)
Formed on each of the pair of side plate portions (2a, 2b).
With the cut-and-raised tongue pieces (10a, 10b),
The connector according to claim 1, wherein the connector is held at the inner position of (1) . 3. A substrate part (1) and a front part from the substrate part (1).
A pair of left and right side plate portions (2a, 2
b) and from the tip of the pair of side plates (2a, 2b).
A pair of locking plates that are bent and connected to the side and overlap each other
(3a, 3b) and a bolt (20), and a pair of locking plate portions (3a, 3b)
Notch portions (8a, 8b) are provided where the portions overlap each other.
And the overlapping portion of these notches (8a, 8b)
As a result, the pair of side plates (2a, 2b) move closer to each other.
Separator fitting concave part (7) whose width increases by moving
Is formed in the separator fitting concave portion (7).
A projection (6) for retaining the separator is formed on the side of the entrance.
Is, the head (20a) of the bolt (20), said pair
Between the side plate portions (2a, 2b) of the substrate portion (1).
The screw (20) is held non-rotatably on the
(20b) protrudes rearward from the substrate portion (1) and places the separator (17) in the separator fitting recess (7).
When pressed downward, the pair of side plates (2a, 2a)
b) once moves closer to each other against the elasticity,
And the separator (17)
The retaining projection (6) covers the separator (1).
The head (17a) of (7) is connected to the pair of side plates (2a, 2).
b) A connector for connecting the mold and the separator to be fitted and held therebetween . (4) Screw shaft part (20b) of the bolt (20)
Is formed upward from the lower side of the substrate portion (1).
The notch is fitted into the notch recess (21) and the notch is
The protrusion (22) formed in the recess (21)
The head (20a) of the bolt (20) is
Non-rotatably fitted between the pair of side plates (2a, 2b)
And each of the pair of side plates (2a, 2b)
With the cut and raised tongue pieces (10a, 10b) formed,
It is held at a position inside the substrate part (1) Claim 3
A connection tool between the formwork and the separator.