JPH08270219A - Connecting tool for form and separator - Google Patents

Abstract

PURPOSE: To provide a safe connecting tool easily connecting concrete forms and separators with no fear that the separator unexpectedly comes off. CONSTITUTION: Notches 8a, 8b partly superposed with each other are provided in a pair of fixing boards 3a, 3b. A fitting recess 7 of the separator is formed, in which a pair of side boards 2a, 2b are mutually moved close to each other due to the superposed part of both notches and the width thereof is widened. A non-slip protrusion 6 for the separator is formed at the side of inserting opening in the fitting recess of separator. A nut 4 is held at a position adjacent to the base board 1 between a pair of side boards so as not to be rotatable. When the separator 17 is pressed downward into the fitting recess of separator, a pair of side boards 2a, 2b are moved once close to each other against the elastic force and thereafter, elastically returned and the separator is covered with the protrusion 6 and the separator head 17a is fitted and held between a pair of side boards 2a, 2b.

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 formwork and a separator, which is used by attaching the separator to a concrete formwork having a heat insulating material mounted on the inside thereof. is there.

[0002]

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

In such a box-shaped press-molding connector, an inner-end screw shaft portion of a replenishing shaft penetrating a mold is screwed into a screw hole of a nut from a through hole of a rear plate portion or a bolt. Thread the screw shaft part through the formwork, and screw the formwork fastener to the outer end screw shaft part of the add-on shaft or the screw shaft part of the bolt that protrudes to the outside of the formwork. Fix it. Then, in the separator fitting recess of the connector, the separator is press-fitted and locked in the separator fitting recess so that the separator head fits into the connector, but the following problems occur. there were.

[0004]

That is, in the conventional box-shaped press-molded connector as described above, the protrusion for retaining the separator, which is required at the side of the inlet of the separator fitting recess, is
The cut-and-raised tongue and the like must be configured so that it has elasticity, but due to size restrictions, it can be easily elastically deformed by the separator pressed into the separator fitting recess. In addition, it is impossible to form the retaining projection having a large amount of covering the fitted separator.

Therefore, although the fitting and locking operation of the separator is difficult, the effect of preventing the fitted separator from coming off is low, and the separator may accidentally come off during use. It is an object of the present invention to provide a connector for a mold and a separator that does not have such problems.

[0006]

Means for Solving the Problems A connector for connecting a mold and a separator of the present invention to achieve the above object is shown by a reference numeral of an embodiment to be described later, and a substrate portion (1), The pair of left and right side plate parts (2a, 2b) are separately bent and connected forward from this board part (1), and the pair of side plate parts (2a, 2b) are bent and connected inward from the tips. It is equipped with a pair of locking plate parts (3a, 3b) that overlap each other in the front and rear and a nut (4) or a bolt (20) .A part of the pair of locking plate parts (3a, 3b) starts from the upper side. Notch parts (8a, 8b) that overlap each other are provided, and the overlapping part of these notch parts (8a, 8b) causes the pair of side plate parts (2a, 2b) to move closer to each other, thereby widening the separator fitting. A recess (7) is formed, and a separator retaining protrusion (6) is formed on the side of the inlet of the separator fitting recess (7), and the nut (4) or bolt (20 ) Head (20a) is non-rotatably held in a position adjacent to the base plate (1) between the pair of side plate parts (2a, 2b), and the screw hole (4a) of the nut (4) is attached to the base plate (2a, 2b). Communicating with the through hole (11) provided in 1),
The screw shaft portion (20b) of the bolt (20) projects rearward from the substrate portion (1), and when the separator (17) is pressed downward into the separator fitting recess (7), the pair of side plate portions (2a, 2b) Move toward each other once against the elasticity and then elastically return to the separator.
The protrusion (6) for retaining the separator is covered on (17),
The head portion (17a) of the separator (17) is configured to be fitted and held between the pair of side plate portions (2a, 2b).

When carrying out the present invention, the nut (4)
When using the nut (4), the nut (4)
a) and (2b) so that they cannot be rotated, and the board part (1)
A pair of upper and lower cut-and-raised tongues (9a, 9b) formed on each side and a pair of cut-and-raised tongues formed on each of the side plate portions (2a, 2b).
With (10a, 10b), it can be held at a position adjacent to the substrate part (1).

When the bolt (20) is used in place of the nut (4), the bolt (20) has the screw shaft portion (20b) formed upward from the lower side of the base plate portion (1). Notch recess (2
1) and the protrusion (22) formed in the cutout recess (21) to prevent the head (20a) from being fitted between the pair of side plate parts (2a, 2b) in a non-rotatable manner. Cut-and-raised tongue pieces formed on each of the pair of side plate portions (2a, 2b)
(10a, 10b) can be held at a position adjacent to the substrate part (1).

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 4, P is a connecting member according to the present invention, which includes a base plate 1 and a base plate 1. A pair of left and right side plate portions 2a and 2b that are separately bent and connected forward,
A pair of locking plate portions 3a, 3b that are bent inwardly from the tips of the pair of side plate portions 2a, 2b and are continuous inward, and overlap each other in the front and rear direction
And a nut 4. A pair of locking plate parts 3
Notches 8a, 8b forming a separator fitting concave portion 7 provided with a protrusion 6 for preventing the separator 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 with each other from the upper side thereof. , 8b overlap each other to form a separator fitting concave portion 7 having a wider width as the pair of side plate portions 2a, 2b move closer to each other, and one notch portion is formed on one inlet side of the separator fitting concave portion 7. The protrusion 6 for preventing the separator from coming off is formed on 8a. The separator retaining projections 6 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 plate portions 2a and 2b, and a pair of upper and lower cut-and-raised tongues 9a and 9b formed on the base plate portion 1 and the pair of side plate portions 2 are provided.
Cut-and-raised tongues 10a, 1 formed on a and 2b, respectively.
0b, the through hole 11 is provided at a position adjacent to the board portion 1 and is connected to the screw hole 4a of the board portion 1.

Reference numeral 12 is a concrete formwork, on which a heat insulating material 13 having a predetermined thickness is attached and attached.
Through holes 12a and 13a are concentrically provided in the heat insulating material 13. Reference numeral 14 denotes a replenishment shaft, which is a heat insulating material 13.
A cylindrical spacer 15 having a length substantially equal to the thickness of
The inner end screw shaft portion 14a is threadedly connected to the screw hole 4a of the nut 4 via the through hole 11 of the connecting tool P. This additional shaft 14 and the cylindrical spacer 15 together with the heat insulating material 13
Through the through hole 13a of the
The outer end screw shaft portion 14b of the above is projected outward from the through hole 12a of the form 12, and the form fastening metal fitting 16 is screwed and fastened thereto,
The mold 12 and the heat insulating material 13 are sandwiched between the mold fastening metal fitting 16 and the board portion 1 of the connecting tool P, and the connecting tool P is attached to the heat insulating material 1.
Fix inside 3.

At this time, the connector P is positioned in such a posture that the separator fitting recess 7 is opened upward, but when the joint shaft 14 is formed with the rotation stopping flange 14c, Form the collar part 14c for non-rotation
By digging into the inner surface of the second through hole 12a, the posture of the connecting tool P can be determined via the additional shaft 14. The form fittings 16 are screwed together to form the form 12 between the form fittings 16 and the base plate portion 1 of the connector P.
The tubular spacer 15 prevents the heat insulating material 13 from being unduly compressed when sandwiched between the heat insulating material 13 and the heat insulating material 13.

Reference numeral 17 denotes a separator, in which a nut 19 is screwed and coupled to an end portion of the shaft rod 18, and the nut 19 forms a separator head 17a.
It may be a rivet type in which a bulging head is integrally formed at the end of the. The separator fitting recess 7 formed by the overlapping portions of the cutout portions 8a and 8b provided in the locking plate portions 3a and 3b of the connecting tool P is the separator 17
The width is smaller than the diameter of the shaft rod 18, and the width is further narrowed at the place where the separator retaining projection 6 is provided. The separator fitting recess 7 is formed so that the shaft rod 18 of the separator 17 can be easily pressed into the separator fitting recess 7.
The upper end of one side of both notches 8a and 8b forming the entrance above the retaining projection 6 is obliquely cut.

When connecting the separator 17 to the connecting tool P, the shaft rod 18 is fitted into the separator fitting recess so that the head 17a of the separator 17 is fitted between the pair of side plate portions 2a and 2b of the connecting tool P. Press down into 7 from the top. At this time, as the shaft rod 18 is press-fitted, the pair of side plate portions 2a and 2b move closer to each other against elasticity, the separator fitting recess 7 expands, and the shaft rod 18 fits into the separator fitting recess 7. It will be. Then, when the shaft rod 18 passes through the position of the separator retaining projection 6, the separator fitting concave portion 7 expands to the maximum, and then the pair of side plate portions 2a and 2b elastically return, as shown in FIG. 1C. The separator removal preventing projection 6 is put on the shaft rod 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 plate portions 2a and 2b.
8 will be sandwiched, but since the shaft retainer 18 does not come out upward from the separator fitting recess 7 by the separator slip-off preventing projection 6, the width of the separator fitting recess 7 is set to the diameter of the shaft rod 18. It is also possible to make them substantially equal and to make only the width at the position of the separator removal preventing projection 6 smaller than the diameter of the shaft rod 18.

As is well known in the art, the other end of the separator 17 connected to the connecting tool P as described above forms the concrete pouring space with the form 12 (heat insulating material 13) on the other form. The expansion of the formwork 12 to the outside by the concrete that is joined to the formwork and is poured into the concrete placing space. The locking plate portions that overlap the front and rear of the connecting tool P that is connected to the formwork 12 as described above. This is prevented by the engagement of the separator heads 17a with 3a and 3b. At this time, the separator head 17a includes the pair of side plate portions 2a, 2a of the connector P.
Although the b acts to expand outward, the expansion of the pair of side plate portions 2a and 2b acts to reduce the width of the separator fitting concave portion 7, so that both locking plates forming the separator fitting concave portion 7 are formed. The sides of the cutouts 8a and 8b of the portions 3a and 3b hold the separator shaft rod 18 more firmly, and the separator head 17a does not come off from the connector P. Of course, when the separator shaft rod 18 is disengaged upward from the separator fitting concave portion 7, the separator disengagement preventing projection 6 is reliably prevented.

In the above-described embodiment, the nut 4 is held by the connecting tool P. However, as shown in FIG.
Can be held by the connecting tool P, and the screw shaft portion 20b of the bolt projecting from the connecting tool P can be used instead of the add-on shaft 14 of the above-described embodiment. In this case, as shown in FIG. 6, a notched concave portion 21 is formed upward from the lower side of the substrate portion 1, and the screw shaft portion 20b of the bolt 20 is fitted into the notched concave portion 21 from below, The bolt head portion 20a can be non-rotatably fitted between the pair of side plate portions 2a and 2b, and the bolt screw shaft portion 20b can be prevented from coming off by the projection portion 22 formed in the cutout concave portion 21. Further, in order to prevent the bolt head 20a from moving in the direction away from the base plate portion 1, a pair of side plate portions 2a and 2b are provided.
The cut and raised tongues 10a and 10b formed on each of the
The bolt head 20 a is held at a position adjacent to the board unit 1.

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

[0020]

As described above, according to the connector for connecting the mold and the separator of the present invention, the nut (4) or the bolt
Attach the separator (17) to the formwork (12) by attaching it to the formwork (12) using (20) and engaging and locking the separator (17) in the separator fitting recess (7). However, the separator fitting recess (7) is
It is formed by the overlapping parts of the notches (8a, 8b) provided in the tip locking plate parts (3a, 3b) of the pair of left and right side plate parts (2a, 2b) that are bent and connected from (1). The position where the elastic deformation of both locking plate parts (3a, 3b) when press-fitting the separator (17) into the separator fitting recess (7) is set sufficiently from the separator fitting recess (7). It can be located at the base of the side plate portions (2a, 2b) that are separated from each other.

[0021] Therefore, even if the iron plate constituting this connecting tool (P) is relatively thick, the protrusion (6) for preventing the separator from coming off the separator fitting recess (7) with respect to the separator (17). Even if the covering margin is large, the work of press-fitting the separator (17) into the separator fitting recess (7) can be easily performed with a comparatively light pushing force. Moreover,
As described above, the covering amount of the separator retaining protrusion (6) with respect to the separator (17) is increased to increase the separator (17).
It is also possible to reliably prevent accidentally coming out of the separator fitting recess (7) upward.

Further, when the separator (17) is press-fitted and locked in the separator fitting recess (7), the pair of side plate portions (2a, 2a,
2b) move closer to each other and the separator fitting recess (7)
The width of the pair of side plates (2a, 2b) is expanded when the separator (17) and the connector (P) are about to be separated from each other by a large force in the axial direction of the separator in use. As a result, the separator fitting recess (7) is deformed so that its width is narrowed,
The separator (17) is clamped more firmly,
There is almost no risk that (17) will be pulled out from the connector (P).

Further, the substrate part (1) can be constructed in any size and shape, and therefore, as described in the embodiments, when the heat insulating material is used by being connected to the frame with the heat insulating material. A connector that does not need to be used together with a spacer for preventing unduly compression is also simple and inexpensive to construct.

According to the second aspect of the invention, the required position of the connector (P) can be easily and easily achieved without relying on welding or the like for the nut (4) used for connecting the mold (12). Can be securely held, and the assembly cost can be reduced. Further, according to the configuration of claim 3, the bolt (20) used for the connecting means with the form (12) can be easily and easily secured at a required position of the connecting tool (P) without relying on welding or the like. It can be held and the assembly cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially transverse plan view showing a usage state, FIG. 1B is a partially longitudinal front view showing a separator and a connecting tool, and FIG. 1C is a state where a separator is fitted and locked. It is a partially longitudinal front view which shows a coupling tool.

FIG. 2 is a vertical side view of FIG. 1A.

FIG. 3 is a side view of the connector.

FIG. 4 is a vertical cross-sectional front view of the connector.

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

FIG. 6 is a rear view of FIG.

FIG. 7 is a plan view showing still another modification of the connector, and FIG. 7 is a front view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 base plate part 2a side plate part 2b side plate part 3a locking plate part 3b locking plate part 4 nut 6 separator removal preventing projection part 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 of base plate 12 Formwork 13 Insulation material 14 Joint 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 recess 22 Bolt retaining protrusion

Claims (3)

[Claims] 1. A base plate part (1), a pair of left and right side plate parts (2a, 2b) bent and connected separately from the base plate part (1) forward, and a pair of the side plate parts (2a, 2b). ) Is provided with a pair of locking plate portions (3a, 3b) that are bent inward from the tip and overlap each other in the front and back, and a nut (4) or a bolt (20). 3b) is provided with notches (8a, 8b) that partially overlap each other from the upper side thereof, and the pair of side plates (2a, 2b) are formed by the overlapping portions of these notches (8a, 8b). A separator fitting recess (7) is formed which widens as the two move closer to each other.The separator fitting recess (7) is formed with a separator retaining projection (6) beside the inlet, and a nut ( 4) or the head (20a) of the bolt (20) is non-rotatably held between the pair of side plate portions (2a, 2b) at a position adjacent to the base plate portion (1), and the screw hole ( 4a) is provided on the board part (1) The screw shaft (20) of the bolt (20) communicates with the through hole (11)
b) protrudes rearward from the base plate part (1), and when the separator (17) is pressed downward into the separator fitting recess (7), the pair of side plate parts (2a, 2b) temporarily approach each other against elasticity. After moving, it returns elastically and the separator (17)
The separator retaining projection (6) is covered on the top of the separator (17) so that the head (17a) of the separator (17) is fitted and held between the pair of side plate portions (2a, 2b). Connector. 2. The nut (4) is non-rotatably fitted between the pair of side plate portions (2a, 2b), and a pair of upper and lower cut-and-raised tongues (9a, 9b) formed on the base plate portion (1). ) And a pair of side plates (2
The form and separator according to claim 1, wherein the cut-raised tongue pieces (10a, 10b) formed on each of a, 2b) are held at a position adjacent to the base plate portion (1). A coupling tool with. 3. The bolt (20) has a screw shaft portion (20b) and a base plate portion (1).
It fits into the notch recess (21) formed upward from the lower side of the head, and is prevented from coming off by the protrusion (22) formed in the notch recess (21), and the head (20a) is paired. The non-rotatably fitted side plate portions (2a, 2b) of the pair of side plate portions (2a, 2b) and the cut-and-raised tongue pieces (10
The connector between the mold and the separator according to claim 1, which is held at a position a, 10b) adjacent to the base plate portion (1).