JP2007247217A - Clip for fixing metallic backing material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel clip for fixing a metallic backing material capable of locking a joist receiver by bending a bending locking piece, eliminating conventional faults while keeping advantages such as excellent working efficiency and inexpensive manufacture, and improving earthquake resistance and strength. <P>SOLUTION: A joist 110 is held by a joist holding part a1, and a horizontal plate part 2 is positioned on it along an upper face of an upper part flange 133 of the joist receiver 130 arranged so as to cross it orthogonally. By bending the bending locking piece 5 extending from a front fringe of the horizontal plate part 2 toward a part below the upper part flange 133, the joist receiver 130 is locked. At this time, a projecting part 6 of the bending locking piece 5 is positioned on a lower face of the upper part flange 133 or is abutted on the lower face. Consequently, even if the bending locking piece 5 attempts to deform in the direction in which it leaves the upper part flange 133, the projecting part 6 is pressed against the lower face of the upper part flange 133 or bites it to prevent deformation of the bending locking piece 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a clip for fixing, for example, a field edge and a field edge receiver, which are metal base materials for building a ceiling foundation.

Hangers are attached to a plurality of suspension bolts that are suspended from the ceiling slab as a ceiling base structure of a building, etc. Moreover, what is constructed by fixing a metal field edge in a state orthogonal to the field edge receiver by a fixing metal fitting called a clip is known (see, for example, Patent Documents 1 to 3).
The field edge includes a groove-shaped field edge 110 (see FIGS. 3, 6, 10, etc.) with a lip with the groove opening facing upward, and a square tube-shaped field edge 120 (see FIGS. 8, 12, etc.). The field receiver 130 is appropriately used, and the field receiver 130 is generally formed of a groove shape in which the groove opening is turned sideways (see FIG. 3, FIG. 6, FIG. 8, FIG. 10, FIG. 12, etc.).
Further, as a clip used in this kind of base structure, a clip A ′ as shown in FIG. 9 and FIG. 10 is usually used for a groove-shaped field edge 110 with a lip, and a square tube-shaped field edge 120 is used. In general, a clip A ″ as shown in FIGS. 11 and 12 is generally used. Each of these clips has a structure in which a field edge holding part is provided at the lower part and a field edge receiving locking part is provided at the upper part.

That is, in the clip A ′ shown in FIGS. 9 and 10, the horizontal plate portion 202 along the upper surface of the upper flange 133 of the field edge receiver is formed on the upper edge of the flange portion 201 along the back surface of the web 132 of the field edge receiver 130. The lower portion of the saddle plate portion 201 is provided as a loading portion 203 inserted into the groove opening 111 of the field edge 110, and left and right lips 112, 112 of the field edge 110 are provided at the left and right ends of the lower edge of the loading portion 203. The nail | claw part 204,204 engaged with is provided, and the field edge holding part is formed. Further, an appropriate number of bending locking pieces 205 that are bent inside the upper flange 133 of the field edge receiver 130 and engage the field edge receiver 130 are provided at the front edge of the horizontal plate portion 202, A receiving latching portion is formed.
The clip A ″ shown in FIG. 11 and FIG. 12 has a groove-shaped portion 214 composed of three surface portions 211, 212, 213 along the left and right side surfaces 121, 122 and the bottom surface 123 of the rectangular tube-shaped field edge 120. Further, extended surface portions 216 and 216 in which the front edge 215 abuts on the back surface of the web 132 of the field edge receiver 130 are connected to the upper portions of the left and right side surface portions 212 and 213 of the groove-shaped portion 214, A horizontal plate portion 217 along the upper surface of the upper flange 133 of the field receiver 130 is connected to the upper end of each extended surface portion 216, and the upper flange of the field receiver 130 is connected to the front edge of the horizontal plate portion 217. A folding edge locking piece 218 that is bent inside 133 and locks the field edge receiver is connected to form a field edge receiving locking portion.

Japanese Utility Model Publication No. 63-62512 JP 2002-276068 A JP 2004-131928 A

The above-described conventional metal base material fixing clip, regardless of the type, has a field edge receiving lock by means of a bent locking piece that is bent below the upper flange of the field edge reception to lock the field reception. Forming part.
According to the clip having such a configuration, the field edge receiver can be locked with a predetermined strength simply by bending the bending locking piece, so that it has excellent workability and can be manufactured at a low cost. If the bending is not performed sufficiently in the case, if the load exceeding the assumption is applied to the building and the force exceeding the specified value acts in the direction to separate the field edge and the field edge receiver, the bending locking piece will be separated from the upper flange. It could not be said that there was no fear that the fixing strength would decrease due to deformation in the direction.
In order to solve such problems, various types of clips with complicated configurations have been proposed. However, due to the complexity of the structure, workability at the construction site is inferior, and the work is troublesome, so sufficient locking is possible. There is a risk of forgetting to confirm whether the clip has been applied, and new problems such as an increase in the manufacturing cost of the clip arise.

  The present invention has been made in view of such a conventional situation, and the purpose of the work is a clip that is configured to lock a field edge receiver by folding a folding locking piece, To provide a new metal base material fixing clip with improved seismic resistance, strength, etc. by eliminating the above-mentioned conventional problems while having advantages such as excellent performance and low cost manufacturing. is there.

In order to achieve the above object, the metal base material fixing clip according to the present invention is disposed on the lower surface of the field edge receiver having a groove shape with the groove opening sideways so as to be orthogonal to the field edge receiver. It is a clip to fix the field edge,
A field edge holding part for holding the field edge is provided at the lower part, and a field edge receiving engagement part for engaging the field edge receiver is provided at the upper part, and the field edge receiving engagement part is provided with the field edge receiving part. A horizontal plate portion that should extend along the upper surface of the upper flange, and a bending locking piece that extends from the front edge of the horizontal plate portion and that should be bent below the upper flange. Protruding portions to be brought into contact with the lower surface of the flange are provided.

  According to such a configuration, the field edge is held by the field edge holding part, and the horizontal plate part is located along the upper surface of the upper flange of the field edge receiver arranged orthogonal to the upper surface of the field edge, If the bending locking piece extending from the front edge of the horizontal plate portion is bent below the upper flange, the field edge receiver is locked. At this time, since the protrusion of the bending locking piece is located on the lower surface of the upper flange or is in contact with the lower surface, a force exceeding the specified value acts in a direction to separate the field edge and the field edge receiver. Even if the bending locking piece tries to deform in a direction away from the upper flange, the protrusion is pressed against or bites into the lower surface of the upper flange to prevent the deformation. Therefore, it is possible to provide a ceiling foundation structure having greatly improved earthquake resistance, strength resistance and the like as compared with the case where a conventional clip is used.

The clip according to the present invention may be integrally formed of hard plastic or the like, but is usually stamped and formed from a metal base material such as a steel plate or aluminum whose surface is metal-plated. Therefore, when the metal clip is formed, it is preferable to form the protrusions at the same time in order to manufacture the clip at a low cost.
Specifically, the protrusion is formed into a chevron shape punched into an opening provided in the folding locking piece, and when the folding locking piece is bent below the upper flange, the chevron shape It is good to form so that the tip of a projection part may contact the lower surface of the upper flange.

  In this case, the clip provided with the protruding portion can be manufactured in the same manufacturing process as in the prior art. In addition, it is possible to bend easily by making the folding locking piece provided with an opening, and if the folding locking piece is bent, the point of the mountain-shaped protrusion in the opening is positioned on the lower surface of the upper flange. Even if the bent locking piece tries to deform in the direction away from the upper flange, or the abutment of the bent locking piece, the tip of the protrusion is pressed against or bites into the lower surface of the upper flange to prevent the deformation. Properties and strength resistance are further improved.

  When the opening is formed across the horizontal plate and the bending locking piece, the bending locking piece can be bent more easily while providing the above-described advantages of the mountain-shaped protrusion. It becomes like this. Therefore, improvement in seismic resistance and strength can be realized while improving workability in field construction.

  By the way, as described in the section of “Background Art”, the field edge for constructing this kind of ceiling base structure is often used in the grooved type with lip and the rectangular tube type, but the field edge of the clip The holding part also has a structure corresponding thereto.

  As a specific example of the clip used for fixing the groove-shaped field edge with a lip with the groove opening facing upward, the horizontal plate part is continuously provided on the upper edge of the saddle plate part along the rear surface of the field edge receiver web. The lower portion of the saddle plate portion is a loading portion inserted into the groove opening of the field edge, and claw portions that engage with the left and right lips of the field edge are provided at both left and right ends of the loading portion. An aspect is provided in which the field edge holding portion is formed to form the field edge receiving locking portion by connecting the bending locking piece to the front edge of the horizontal plate portion. Can do.

In addition, the groove-shaped field edge with this kind of lip is usually used in a single size with a width of 25 mm and a double size with a width of 50 mm depending on the application, and a single size or double size clip with a width corresponding to each is used. Used. Therefore, it is preferable to form an appropriate number, that is, one or a plurality of the bending locking pieces according to the width of the clip.
For example, in a single size clip, it is conceivable to include one or two bent locking pieces divided into left and right. In the case of double size clips, when two folding locking pieces are provided, one at each of the left and right ends in the width direction of the clip, the central folding locking piece is provided between them and a total of three is provided. Various aspects are conceivable.
Further, the above-described protrusions and openings provided in the bending locking pieces are not limited to one, and two or more protrusions and openings are arranged in parallel with one bending locking piece having a relatively large width. Various modes, such as providing, can be considered.

  As a specific example of a clip used for fixing a square cylindrical field edge, the field edge holding part is formed by a groove shape part composed of three surface parts along the left and right side surfaces and the bottom surface of the field edge, and the groove shape An extension surface portion whose front edge is in contact with the rear surface of the web of the field edge receiver is connected to the upper part of the left and right side surface portions of the portion, and the horizontal plate portion is connected to the upper end of each extension surface portion. The aspect characterized by forming the said field edge receiving latching part by providing the said bending latching piece continuously in the front edge of a board part can be mention | raise | lifted.

  Also in these example embodiments, the number of the bent locking pieces, the protrusions provided on the bent locking pieces, the openings, and the like are not necessarily limited, and can be appropriately selected according to the use and purpose.

  Further, in the above-mentioned field edge and field edge receiver, there are various sizes having different height dimensions, but it goes without saying that the clip according to the present invention is appropriately formed in height dimensions corresponding to these sizes. .

As described above, the metal base material fixing clip according to the present invention is a clip in which the field edge receiver is locked by folding the bending locking piece. A protrusion to be brought into contact with the lower surface of the upper flange is provided, and the protrusion is pressed against or bites into the lower surface of the upper flange, so that deformation of the bending locking piece can be prevented. Therefore, even if the building is subjected to a load exceeding the specified level due to natural disasters such as earthquakes and typhoons, the ceiling base is greatly improved in earthquake resistance and strength compared to conventional clips. It becomes possible to provide a structure.
In addition, since the field receiver is locked by bending the bending locking piece, the workability at the site is excellent, and the above-described effects can be obtained without impairing the advantages of the locking piece folding clip. Therefore, it is possible to contribute to the provision of a highly reliable ceiling foundation structure that is less likely to result in unsatisfactory fixing of the connecting portion due to factors such as inferior workability due to the complicated structure.
Furthermore, since it has a simple structure in which the above-described protrusions are formed on the bending locking piece, it can be manufactured at a low cost.

  Hereinafter, an example of an embodiment of a metal base material fixing clip according to the present invention will be described with reference to FIGS. Clips A-1 to A-3 in each example are for fixing the field edge 110 or 120 arranged on the lower surface of the field receiver 130 so as to be orthogonal to the field receiver. The field edge receiver 130 has a groove shape in which the groove opening 131 is turned sideways, and is provided with an upper flange 133 on the upper edge of the web 132 that becomes the groove bottom surface (back surface) and a lower flange 134 on the lower edge. It is.

In FIG. 1 to FIG. 4, a clip used for fixing a groove-shaped field edge 110 with a lip to the lower surface of the field edge receiver 130, which is a so-called double-size field edge (common name: a width of about 50 mm). An example of a double-size clip (commonly called “double clip”) A-1 used for “double field”) is shown.
The field edge 110 has a groove shape with the groove opening 111 facing upward, and left and right flanges 114, 114 are raised at the left and right side edges of the web 113 serving as the groove bottom surface. Is well known with lips 112, 112 located at

  The clip A-1 of this example includes a field edge holding part a1 for holding the field edge 110 at the lower part and a field edge receiving engagement part a2 for engaging the field edge receiver 130 at the upper part. The holding part a1 has the same configuration as the above-described conventional clip A ′, but is characterized in that the field edge receiving and locking part a2 is configured as described later.

That is, in this clip A-1, the horizontal plate portion 2 along the upper surface of the upper flange 133 of the field edge receiver 130 is connected to the upper edge of the flange plate portion 1 along the back surface of the web 132 of the field edge receiver 130. The lower part of the saddle plate 1 is a loading part 3 to be inserted into the groove opening 111 of the field edge 110, and the left and right ends of the lower part of the loading part 3 are connected to the left and right lips 112, 112 of the field edge 110. The nail | claw parts 4 and 4 which match are formed and the field edge holding | maintenance part a1 is formed.
Further, bending engagement pieces 5 and 5 to be bent below the upper flange 133 of the field edge receiver 130 are connected to the left and right ends of the front edge of the horizontal plate portion 2. The protrusion 6 to be brought into contact with the lower surface of the upper flange 133 is provided to form a field edge receiving portion a2.

  The protrusion 6 has a chevron shape punched into an opening 7 provided in the bending locking piece 5, and when the bending locking piece 5 is bent below the upper flange 133, the chevron-shaped protrusion The tip 8 of the portion 6 is formed so as to contact the lower surface of the upper flange 133. Specifically, as shown in FIG. 2, in the opening 7 formed over the horizontal plate portion 2 and the bending locking piece 5, the tip 8 of the protrusion 6 is a folding position of the bending locking piece 5. 9 (position of the front edge of the upper flange 133) or a little outside, is formed so that the tip 8 is brought into contact with the lower surface of the upper flange 133 by bending the folding locking piece 5. .

  According to the clip A-1 of the present example having the above-described configuration, after inserting the insertion portion 3 into the double-sized field edge 110, the claws 4 and 4 are engaged with the lips 112 and 112, and the field is The edge plate 110 is held, and the vertical plate portion 1 is placed along the back surface of the web 132 of the field edge receptacle 130 arranged orthogonally to the upper surface of the field edge 110, and the horizontal plate portion 2 is arranged along the upper surface of the upper flange 133. After that, if the bending locking pieces 5 and 5 extending from the front edge of the horizontal plate portion 2 are bent below the upper flange 133, the field edge receiver 130 is locked. At this time, the folding locking piece 5 can be easily bent by the opening 7, and the sharp tip 8 of the mountain-shaped protrusion 6 is formed by the bending as shown in FIGS. Located on or in contact with the lower surface of the flange 133. Therefore, even if the bending locking piece 5 tries to deform in a direction away from the upper flange 133, the tip 8 of the projection 6 is pressed against or bites into the lower surface of the upper flange 133 to prevent the deformation. 110 and the field receiver 130 are more firmly fixed, and the earthquake resistance, strength, and the like of the ceiling base structure constructed thereby are greatly improved.

5 and 6 show modifications of the above-described clip A-1. This example shows an example of a single size clip (commonly referred to as “single field edge”) A-2 used for a single size field edge (commonly referred to as “single field edge”) having a width of about 25 mm.
This clip A-2 is characterized in that the entire width of the clip is a width corresponding to a single field edge, and that the field edge receiving latching portion a2 ′ has a structure described later in accordance therewith, and the other structure is as follows. The same components as those of the above-described clip A-1 are denoted by the same reference numerals in the drawing, and a part of overlapping description and illustration are omitted.

  In other words, the clip A-2 has a width corresponding to the single edge of the above-described saddle plate portion 1 and the insertion portion 3, and the edge of the lower edge of the insertion portion 3 of the small width is The claw portions 4 and 4 that engage with the left and right lips 112 and 112 of the 110 are provided to form the field edge holding portion a1.

  In addition, a bending locking piece 5 to be bent is provided below the upper flange 133 of the field edge receiver 130 over the entire length of the front edge of the small width plate portion 1, and the bending locking piece 5 is connected to the bending locking piece 5. The above-described protrusion 6 is provided to form a field edge receiving portion a2 ′.

  The protrusion 6 in this example is formed in a mountain shape punched into two openings 7, 7 provided in parallel to the width direction of the bending locking piece 5. When bent downward from the flange 133, the tip 8 of each of the mountain-shaped projections 6, 6 is formed so as to contact the lower surface of the upper flange 133. Specifically, in the same manner as in the example described above with reference to FIG. 4, in the openings 7, 7 arranged side by side across the horizontal plate portion 2 and the bending locking piece 5, the tip 8 of each protrusion 6 is folded. The bending locking piece 5 is positioned substantially at the same position as or slightly outside the bending position 9 (the position of the front edge of the upper flange 133). It is formed so as to be in contact with the lower surface of the.

  According to the clip A-2 of this example having the above configuration, after inserting the insertion portion 3 into the single-size field edge 110, the claws 4, 4 are engaged with the lips 112, 112 to The edge plate 110 is held, and the vertical plate portion 1 is placed along the back surface of the web 132 of the field edge receptacle 130 arranged orthogonally to the upper surface of the field edge 110, and the horizontal plate portion 2 is arranged along the upper surface of the upper flange 133. After that, if the bending locking piece 5 extending from the front edge of the horizontal plate portion 2 is bent below the upper flange 133, the field edge receiver 130 is locked. At this time, the folding locking piece 5 can be easily bent by the openings 7 and 7 and the bent ends 6 and 6 of the peak-shaped protrusions 6 and 6 can be easily bent by the bending. 8 is located on or in contact with the lower surface of the upper flange 133. Therefore, even if the bending locking piece 5 tries to deform in the direction away from the upper flange 133, the sharp edges 8, 8 of each protrusion 6 are pressed against or bite into the lower surface of the upper flange 133 to prevent the deformation. The field edge 110 and the field edge receiver 130 are more firmly fixed, and the earthquake resistance, the strength resistance, and the like of the ceiling base structure constructed thereby are greatly improved.

FIGS. 7 and 8 show an example of a clip A-3 used for fixing the rectangular cylindrical field edge 120 to the lower surface of the field edge receiver 130. FIG.
The field edge 120 according to this example is a well-known square cylinder having left and right side surfaces 121 and 122, a bottom surface 123, and an upper surface 124.

  This clip A-3 is provided with a field edge holding part a3 for holding the field edge 120 at the lower part and a field edge receiving engagement part a4 for engaging the field edge receiver 130 at the upper part. Although a3 becomes the structure similar to the conventional clip A "mentioned above, it has the characteristics in having made the field edge receiving latching | locking part a4 into the structure mentioned later.

That is, this clip A-3 forms the field edge holding part a3 with the groove-shaped part 20 composed of the left and right side surfaces 121, 122 of the square-shaped field edge 120 and the three surface parts 21, 22, 23 that should be along the bottom surface 123. is doing.
Further, extended surface portions 25, 25 in which the front edges 24, 24 abut against the back surface of the web 132 of the field edge receiver 130 are provided on the left and right side portions 22, 23 of the groove-shaped portion a3. The horizontal plate portions 26 and 26 along the upper surface of the upper flange 133 of the field edge receiver 130 are connected to the upper ends of the projecting surface portions 25 and 25 through the reinforcing plates 26a and 26a. Folding locking pieces 27, 27 to be bent below the upper flange 133 are connected to the edge, and a protrusion 28 is provided on each folding locking piece 27 to form a field edge receiving locking part a4. Yes.

  Similarly to the above-described protrusion 6, the protrusion 28 in this example also has a mountain shape punched into an opening 29 provided in each bending engagement piece 27, and the bending engagement piece 27 is connected to the upper flange 133. When bent downward, the peak 30 of the chevron-shaped protrusion 28 is formed so as to contact the lower surface of the upper flange 133. Specifically, in the same manner as in the above-described example, in the opening 29 formed across the horizontal plate portion 26 and the bending locking piece 27, the tip 30 of the protrusion 28 is the folding position of the bending locking piece 27. It is located substantially at the same position as or slightly outside (the position of the front edge of the upper flange 133), and is formed so that the sharp tip 30 abuts on the lower surface of the upper flange 133 by bending the folding locking piece 27.

  According to the clip A-3 of the present example having the above-described configuration, the square edge 120 is inserted and fitted into the groove-shaped portion 20 (field edge holding portion a3) to hold the field edge 120. Further, the front edges 24, 24 of the extended surface portions 25, 25 are brought into contact with the back surface of the web 132 of the field edge receiver 130 arranged orthogonally to the upper surface of the field edge 120, and on the upper surface of the upper flange 133. If the horizontal plate portions 26, 26 are lined up and then the bending locking pieces 27, 27 extending from the front edges of the horizontal plate portions 26, 26 are bent downward of the upper flange 133, the field edge receiver 130 is formed. Is locked. At this time, the folding engagement piece 27 can be easily bent by the opening 29, and, similarly to the above-described example, the bent ends 28, 28 of the peak-shaped protrusions 28, 28 are bent. Located on or in contact with the lower surface of the upper flange 133. Therefore, even if the bending locking pieces 27 and 27 are to be deformed in the direction away from the upper flange 133, the pointed ends 30 and 30 of the projections 28 and 28 are pressed against or bite into the lower surface of the upper flange 133. Therefore, the field edge 120 and the field edge receiver 130 are more firmly fixed, and the earthquake resistance, strength, and the like of the ceiling base structure constructed thereby are greatly improved.

  In each embodiment, although illustration is omitted, it is preferable to integrally form reinforcing ribs in the constituent parts of the clips A-1 to A-3.

  Each of the above-described clips A-1 to A-3 is easily manufactured in the same process as in the prior art, in which after punching a single flat plate into a predetermined plane shape, each component is bent sequentially. can do. As a metal plate used for manufacture, the same materials as those conventionally used, such as various surface-treated steel plates such as a galvanized steel plate, a galvanized steel plate, and an aluminized steel plate, can be used.

Next, the fixing strength of the clip according to the present invention and the conventional clip will be described.
First, the groove-shaped field edge 110 with a lip or the square tube-shaped field edge 120 is fixed to a surface plate, and the field receiver 130 arranged orthogonally thereon is used as the above-described clips A-1 to A- according to the present invention. 3 or a conventional clip A ′, A ″. In this state, the clips A-1 to A-3, A ′, A ″ are pulled upward by a tensile tester, and each clip is bent and locked. The tensile load value when the pieces 5, 27, 205, 218 were deformed was measured. As a result, when the conventional clips A ′ and A ″ are used, the bending locking pieces 205 and 218 are deformed in the range of the tensile load of 100 kg to 120 kg. On the other hand, the clips A-1 to A1 according to the present invention are deformed. When A-3 was used, the bending locking pieces 5 and 27 were deformed within a tensile load range of 180 kg to 200 kg.
From this measurement result, it was confirmed that when the clip according to the present invention was used, the fixing strength of the field edge and the field edge receiver was increased by 50% or more compared to the case where the conventional clip was used.

  As mentioned above, although the example of embodiment of the metal base material fixing clip which concerns on this invention was demonstrated based on drawing, this invention is not limited to the example of illustration, The technical described in the claim It goes without saying that various changes are possible within the scope of thought.

The perspective view which shows an example of embodiment of the metal base material fixing clip which concerns on this invention. The top view which shows the positional relationship of the tip of the projection part in the clip of FIG. 1, and the upper flange of a field edge receiver. The perspective view which shows the use condition of the clip of FIG. The center longitudinal cross-section side view of the clip in FIG. The perspective view which shows the other example of embodiment of the metal base material fixing clip which concerns on this invention. The perspective view which shows the use condition of the clip of FIG. The perspective view which shows the other example of embodiment of the metal base material fixing clip which concerns on this invention. The perspective view which shows the use condition of the clip of FIG. The perspective view which shows the conventional clip. The perspective view which shows the use condition of the clip of FIG. The perspective view which shows the conventional clip. The perspective view which shows the use condition of the clip of FIG.

Explanation of symbols

A-1, A-2, A-3: Clip a1, a3: Field edge holding part a2, a2 ', a4: Field edge receiving locking part 1: Collar plate part 2, 26: Horizontal plate part 3: Insertion Part 4: Claw part 5, 27: Bending locking piece 6, 28: Projection part 7, 29: Opening part 8, 30: Tip 20: Groove-shaped part 21, 22, 23: Three surface parts 24: Front edge 25 : Extension surface part 110, 120: Field edge 130: Field edge receiver

Claims (6)

A clip for fixing a field edge disposed so as to be orthogonal to the field edge receiver on the lower surface of the field edge receiver having a groove shape with the groove opening sideways,
A field edge holding part for holding the field edge is provided at the lower part, and a field edge receiving engagement part for engaging the field edge receiver is provided at the upper part, and the field edge receiving engagement part is provided with the field edge receiving part. A horizontal plate portion that should extend along the upper surface of the upper flange, and a bending locking piece that extends from the front edge of the horizontal plate portion and that should be bent below the upper flange. A metal base material fixing clip characterized in that a protrusion to be brought into contact with the lower surface of the flange is provided.   The projecting portion has a chevron shape punched into an opening provided in the folding locking piece, and the tip of the chevron-shaped projecting portion bends the folding locking piece below the upper flange. The metal base material fixing clip according to claim 1, wherein the clip is formed so as to contact the lower surface of the upper flange.   The metal base material fixing clip according to claim 2, wherein the opening is formed across the horizontal plate portion and the bending locking piece.   The metal base material fixing clip according to any one of claims 1 to 3, wherein one or a plurality of the bending locking pieces are provided. The field edge has a groove shape with a lip with the groove opening facing upward,
The lateral plate portion is continuously provided on the upper edge of the saddle plate portion along the web back surface of the field edge receiver, and the lower portion of the saddle plate portion is used as a loading portion to be inserted into the groove opening of the field edge, In addition, claw portions that engage with the left and right lips of the field edge are provided at the left and right ends of the lower edge of the charging portion to form the field edge holding portion, and the folding member is disposed at the front edge of the horizontal plate portion. The metal base material fixing clip according to any one of claims 1 to 4, wherein a stop piece is continuously provided to form the edge receiving and engaging portion. The field edge is formed of a rectangular tube shape,
The field edge holding portion is formed by a groove-shaped portion composed of three surface portions that should extend along the left and right side surfaces and the bottom surface of the field edge, and a front edge is formed on the left and right side surface portions of the groove shape portion. An extended surface portion that abuts the back surface of the web is provided continuously, and the horizontal plate portion is provided continuously at the upper end of each extended surface portion, and the bending locking piece is provided continuously at the front edge of the horizontal plate portion. The metal base material fixing clip according to any one of claims 1 to 4, wherein the field edge receiving and engaging portion is formed.

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