JP2008206698A - Composition member of picture frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composition member of a picture frame in which predetermined quantity of frame members can be easily inserted against corner members and both of the members will not be unsteady even if no adhesive is used. <P>SOLUTION: The composition member has a pair of insertion holes 5, 6 to insert a frame member of a U-shaped cross section which are formed in a right angle, and comprises a corner member 7a which forms a fitting projection 9 in the inner peripheral wall of an insertion hole 5 and a fitting member 8a which can be inserted in the insertion hole 5. The fitting member 8a has an insertion part 10 of U-shaped cross section fitting to the insertion hole 5 and a guide part 11 with slightly smaller periphery than the insertion part 10 connected continuously to the insertion part 10. A fitting recessed part 13 is formed to insert part 10, and the fitting projection 9 fits to the fitting recessed part 13, and prevents the fitting member 8a from coming out of the corner member 2a when insertion part 10 is inserted in the insertion hole 5, and the dimensional relationship is maintained in which a press fit gap is formed to be press fitted in the frame member between the insertion hole 5 and its guide part 11 inserted therein. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a forehead for a plate with decorations such as pictures and advertisements.

At restaurants, public facilities such as stations and hospitals, or at amusement halls, you will see various plates decorated with information and advertisements. For example, at a supermarket food department, a plate with a price or product name is hung from the ceiling or attached to a wagon or shelf to attract the attention of customers. When such a plate is used, the periphery of the plate may be fitted to a simple forehead in order to improve its decorativeness or facilitate display.
This conventionally known simple amount will be described with reference to FIGS.

  The conventional forehead shown in FIG. 9 includes four frame members 1a to 1d that hold the periphery of the plate P with characters and decorations, and four corner members 2a for fixing both ends of the frame members 1a to 1d. To 2d. The corner members 2a to 2d all have the same structure, and the frame members 1a to 1d also have the same structure except for the length thereof. Therefore, here, the frame member 1a and the corner member 2a will be described.

  The frame member 1a is made of plastic having elasticity, and as shown in FIG. 10, a thin plate-like bottom portion 3 having a predetermined length and side portions 4 protruding in the same direction from both ends of the bottom portion 3. 4 having a U-shaped cross section. The front ends of the side portions 4 and 4 are open, but the width L1 on the open end side of the side portions 4 and 4 is narrower than the width L2 of the bottom portion 3. The width L1 on the open end side is slightly narrower than the thickness of the plate P. Therefore, if the peripheral edge of the plate P is press-fitted between the side portions 4 and 4, the pair of side portions 4 and 4 act so as to be separated from each other, and the plate P can be held by the elastic force thereof.

On the other hand, the corner member 2a is formed with a pair of insertion holes 5 and 6 for inserting the ends of the frame members 1a to 1d so that the openings thereof are positioned at right angles.
More specifically, the corner member 2a has a pair of back portions 5a and 6a positioned at a right angle, and side surfaces 5b and 5b project at a right angle from both ends of the back portion 5a. Further, the side surface portions 6b and 6b formed integrally with the side surface portions 5b and 5b are also projected at right angles from both ends of the back portion 6a.

And the latching | locking part 5c, 5c which protrudes toward the inner side of the said side part 5b, 5b is formed in the front-end | tip of side part 5b, 5b, and the latching part 6c, 6c similar to this is formed in the said side part. 6b is formed at the tip of 6b. Therefore, the insertion hole 5 formed by the back portion 5a, the side surface portions 5b and 5b, and the latching portions 5c and 5c, and the insertion hole formed by the back portion 6a, the side surface portions 6b and 6b, and the latching portions 6c and 6c. 6 has a convex cross section.
Further, the width of the insertion holes 5 and 6, that is, the distance L3 between the side surfaces 5b and 5b and the side surfaces 6b and 6b is substantially equal to or slightly smaller than the width L2 of the bottom 3 of the frame members 1a to 1d. A wide dimensional relationship is maintained. The protruding widths of the latching portions 5c, 5c, 6c, 6c are slightly larger than the thickness of the side portions 4, 4 of the frame member 1a.

The frame members 1a to 1d and the corner members 2a to 2d having the above-described configuration are used as follows, for example.
First, the frame member 1a and the corner member 2a are fixed with an adhesive in the state shown in FIG. At this time, a jig A indicated by a dotted line in the figure is inserted from the insertion hole 6 and an adhesive is applied to the outer periphery of the end of the frame member 1a. Then, one end of the frame member 1a is inserted into the insertion hole 5 while sliding the bottom portion 3 of the frame member 1a and the back portion 5a of the corner member 2a in contact.

  As shown in the figure, when the tip of the frame member 1a comes into contact with the jig A, the side parts 4 and 4 of the frame member 1a are spread using another jig, and the side parts 4 and 4 and the corner member 2a are The side surfaces 5b and 5b are brought into contact with each other. That is, since the side portions 4 and 4 of the frame member 1a are gradually narrowed toward the tip, there are gaps between the side portions 4 and 4 and the side surface portions 5b and 5b of the corner member 2a. End up. Therefore, the side portions 4 and 4 of the frame member are expanded in order to firmly bond the side portions 4 and 4 and the side surface portions 5b and 5b.

  When the plate P is fixed to the frame members 1a to 1d, the corner members 2a to 2d and the frame members 1a to 1d are fixed in advance as follows. That is, as shown in FIG. 12, one end of the frame members 1a and 1d is fixed to the corner member 2a, and the other end of the frame member 1a and one end of the frame member 1b are fixed to the corner member 2b. One end of the frame member 1c is fixed to the insertion hole 5 of the corner member 2d, and the other end of the frame member 1c is fixed to the insertion hole 5 of the corner member 2c. In this way, the both side surfaces of the plate P are press-fitted into the frame members 1b and 1d with the frame member and the corner member partially fixed in advance. Then, the plate P is slid in the x direction in the figure, and the lower surface of the plate P is press-fitted between the side portions 4 and 4 of the frame member 1a.

In this way, in a state where the lower surface of the plate P is press-fitted into the frame member 1a, the distal ends of the frame members 1b and 1d protrude from the upper surface of the plate P. 6 and the tip of the frame member 1d is inserted into the insertion hole 6 of the corner member 2d.
If the upper surface of the plate P is press-fitted between the side portions 4 and 4 of the frame member 1c, the forehead can be configured to hold the peripheral edge of the plate P.
When the frame members 1b and 1d are inserted into the corner members 2c and 2d, if an adhesive is applied to the tips of the frame members 1b and 1d, all the frame members can be firmly fixed.
On the other hand, when no adhesive is applied to the frame members 1b and 1d, the frame members 1b and 1d may come out of the corner members 2c and 2d. However, in this case, the corner members 2c and 2d can be attached and detached many times, so that the plate P can be replaced and used many times.
The prior art documents are not particularly investigated.

The forehead composed of the above-described structure is bonded to the frame members 1a to 1d and the corner members 2a to 2d using the jig A in order to keep the amount of the frame members 1a to 1d inserted into the corner members 2a to 2d constant. ing. Thus, since the jig | tool A must be used when fixing the frame members 1a-1d to the corner members 2a-2d, there existed a problem that the fixing operation became very troublesome.
Further, when the frame member (1a) is fixed to one insertion hole (5) of the corner member (2a), the fixed frame member (1a) becomes an obstacle, so the frame is inserted into the other insertion hole (6). When inserting the member (1d), the jig cannot be used. Therefore, when the frame member (1d) is fixed to the other insertion hole (6), the amount of insertion may vary. Thus, when the amount of insertion of the frame member with respect to the corner member varies, there is a problem that the periphery of the plate P cannot be held firmly.

Moreover, when fixing the frame members 1a to 1d to the corner members 2a to 2d, the frame members 1a to 1d are inserted into the insertion holes 5 and 6 in a state where an adhesive is applied to the outer periphery of the ends of the frame members 1a to 1d. insert.
However, the adhesive applied to the outer periphery of the frame members 1a to 1d is wiped off by the open ends (edges) of the insertion holes 5 and 6 in the insertion process. For this reason, there is a problem in that a necessary amount of adhesive does not spread between the bottom portion 3 and the back portions 5a and 6a, and the adhesive force between the two becomes weak.

Further, as described above, the frame member and the corner member are partially removable, in other words, the frame member is only inserted into the corner member without using an adhesive. In some cases, the plate P may be replaced and used many times. However, since the side portions 4 and 4 of the frame members 1a to 1d are gradually narrowed toward the tip, when the frame members 1a to 1d are inserted into the insertion holes 5, the side portions 4 and 4 and the side surfaces The parts 5b and 5b are hardly in contact with each other, and the frame members 1a to 1d and the corner members 2a to 2d are only in contact with the bottom part 3 and the back part 5a.
As described above, since the contact area between the frame members 1a to 1d and the corner members 2a to 2d is small, the frame members 1a to 1d and the corner members 2a to 2d are inevitably rattled when they are not fixed with an adhesive. As a result, there is a problem that the frame members 1a to 1d come off from the corner members 2a to 2d even if a slight vibration is generated.

  An object of the present invention is to provide a constituent member of a forehead in which a frame member can be easily inserted into a corner member by a predetermined amount, and even when no adhesive is used, both do not touch each other. .

  The first invention is a corner member in which a pair of insertion holes for inserting a frame member having a U-shaped cross section constituting the forehead is formed at a right angle, and a fitting convex portion is formed on an inner peripheral wall of at least one of the insertion holes, A fitting member that can be inserted into the insertion hole, and the fitting member has a U-shaped insertion section that fits into the insertion hole, and has an outer circumference slightly smaller than the insertion section that is continuous with the insertion section. A guide recess having a U-shaped cross section is formed, and a fitting recess made of a hole or a recess is formed in the insertion portion, and when the insertion portion is inserted into the insertion hole, the fitting protrusion is fitted into the fitting recess. In addition, the fitting member is configured to prevent the fitting member from coming off from the corner member, and a dimensional relationship is formed between the insertion hole and the guide portion inserted into the insertion hole. To the point of maintaining With a butterfly.

In the second invention, the frame member having a U-shaped cross section is formed of a plastic that retains elasticity, and the width of the open end side is narrower than the width of the bottom portion, and the width of the open end side is It is characterized in that it is narrower than the thickness of the plate to be included in the forehead.
The third invention is characterized in that when the fitting member is inserted into the insertion hole, the guide portion protrudes from the opening of the insertion hole when the fitting convex portion is fitted into the fitting concave portion.

According to the first to third inventions, the frame member can be fixed to the corner member only by fixing the frame member to the fitting member and fitting the fitting member to the corner member. Further, the relative position between the frame member and the corner member is always constant by the fitting convex portion and the fitting concave portion.
Therefore, the frame member can be easily fixed to the corner member, and the amount of the frame member inserted into the corner member can always be constant.

Further, when the frame member and the corner member are completely fixed, the inner side of the frame member and the outer side of the fitting member are fixed with an adhesive, and then the fitting member is inserted into the insertion hole and killed. . As described above, since the adhesive is applied to the inside of the frame member and the frame member and the corner member are fixed via the fitting member, the adhesion between the frame member and the corner member is not weakened.
Furthermore, when the plate is changed over and over, the frame member and the corner member are inserted without using an adhesive. In this case as well, the frame is interposed between the guide portion and the corner member. Since the member is press-fitted, the frame member does not rattle.

In particular, according to the second invention, the plate can be firmly held by the frame member. Moreover, even if the clamping force to the plate is increased, the frame member is press-fitted in the press-fitting gap formed between the guide portion and the corner member, so that the frame member is prevented from rattling and the clamping force is improved. Can be achieved.
In particular, according to the third invention, since the guide portion protrudes from the opening of the insertion hole, the guide portion exhibits a guide function when the frame member is attached to and detached from the corner member in which the fitting member is previously fitted and killed. The frame can be easily attached and detached.

A first embodiment of the present invention will be described with reference to FIG. In addition, the frame member in the first embodiment also uses the same frame member as the conventional one. Also, the corner member is different from the conventional corner member only in that a fitting convex portion described later is formed, and the other components are the same in configuration. Therefore, the same configuration as the conventional one is given the same reference numeral and will be described using the same diagram as the conventional one.
As shown in FIG. 1, the forehead of the first embodiment holds the periphery of the plate P with letters and decorations by four frame members 1a to 1d.

  The frame member 1a is made of plastic having elasticity, and as shown in FIG. 10, a thin plate-like bottom portion 3 having a predetermined length and side portions 4 protruding in the same direction from both ends of the bottom portion 3. 4 having a U-shaped cross section. The front ends of the side portions 4 and 4 are open, but the width L1 on the open end side of the side portions 4 and 4 is narrower than the width L2 of the bottom portion 3. The width L1 on the open end side is slightly narrower than the thickness of the plate P. Therefore, if the peripheral edge of the plate P is press-fitted between the side portions 4 and 4, the pair of side portions 4 and 4 act so as to be separated from each other, and the plate P can be held by the elastic force thereof.

The frame members 1a to 1d are fixed at both ends by corner members 7a to 7d and fitting members 8a to 8d shown in FIG. Since the corner members 7a to 7d and the fitting members 8a to 8d have the same structure, only the corner member 7a and the fitting member 8a will be described here.
The corner member 7a is formed with a pair of insertion holes 5 and 6 for inserting the end portions of the frame members 1a to 1d so that the openings are positioned at right angles.
More specifically, the corner member 7a has the pair of back portions 5a and 6a positioned at a right angle, and the side surface portions 5b and 5b project at a right angle from both ends of the back portion 5a. Further, side surfaces 6b and 6b formed integrally with the side surfaces 5b and 5b are also projected at right angles from both ends of the back portion 6a.

And the latching | locking part 5c, 5c which protrudes toward the inner side of the said side part 5b, 5b is formed in the front-end | tip of side part 5b, 5b, and the latching part 6c, 6c similar to this is formed in the said side part. 6b is formed at the tip of 6b. Therefore, the insertion hole 5 formed by the back portion 5a, the side surface portions 5b and 5b, and the latching portions 5c and 5c, and the insertion hole formed by the back portion 6a, the side surface portions 6b and 6b, and the latching portions 6c and 6c. 6 has a convex cross section.
Further, the width of the insertion holes 5 and 6, that is, the distance L3 between the side surfaces 5b and 5b and the side surfaces 6b and 6b is substantially equal to or slightly smaller than the width L2 of the bottom 3 of the frame members 1a to 1d. A wide dimensional relationship is maintained. The protruding widths of the latching portions 5c, 5c, 6c, 6c are slightly larger than the thickness of the side portions 4, 4 of the frame member 1a.

  The insertion hole 5 has a fitting projection 9 protruding from the inner peripheral wall of the back portion 5a. As shown in FIG. 4, the fitting convex portion 9 includes an inclined portion 9a gently inclined from the opening of the insertion hole 5 toward its deep portion (back portion 6a side), and the back portion and the inclined portion 9a. A parallel part 9b parallel to 5a and a retaining part 9c intersecting at right angles to the parallel part 9b and the back part 5a are provided.

On the other hand, as shown in FIGS. 2 and 3, the fitting member 8 a is connected to the insertion hole 10 of the corner member 7 a and has a U-shaped insertion section 10 that is continuous with the insertion section 10. The guide portion 11 has a U-shaped cross section whose outer periphery is slightly smaller than the insertion portion 10. More specifically, the insertion portion 10 includes a bottom surface portion 10a and side wall portions 10b and 10b that project at right angles from both ends of the bottom surface portion 10a. And the guide part 11 is provided with the bottom face part 11a and the side wall parts 11b and 11b which protrude from the both ends of this bottom face part 11a substantially at right angles like the said insertion part 10. As shown in FIG. However, the angle at which the side wall portions 11 b and 11 b protrude from the bottom surface portion 11 a is equal to the angle at which the side portions 4 and 4 of the frame member protrude from the bottom portion 3.
Further, since the outer periphery of the guide portion 11 is smaller than that of the insertion portion 10, a step portion 12 is formed between the insertion portion 10 and the guide portion 11 on the outer periphery of the fitting member 8 a.

  In the fitting member 8a, a hole-shaped fitting recess 13 is formed from the insertion portion 10 to the guide portion 11, more specifically from the bottom surface portion 10a to the bottom surface portion 11a. Here, although the fitting recess 13 is formed from the insertion portion 10 to the guide portion 11, the fitting recess 13 only needs to be in the insertion portion 10, and is formed by a recess instead of a hole shape. Also good. In any case, as will be described later, when the insertion recess 10 is inserted into the insertion hole 5, the fitting recess 13 is particularly large as long as the fitting protrusion 9 formed in the corner member 7a is fitted. The shape and the like are not limited.

The dimensional relationship among the corner member 7a, the fitting member 8a, and the frame member 1a having the above-described configuration is as follows.
That is, as shown in FIGS. 2 and 3, the width of the insertion member 10 of the fitting member 8a, that is, the width L4 of the bottom surface portion 10a is equal to or slightly smaller than the width L3 of the insertion hole 5 of the corner member 7a. To make it smaller. The height h1 of the insertion member 10a in the insertion portion 10 is equal to or slightly smaller than the height h2 of the insertion hole 5 of the corner member 7a (height from the back portion 5a to the latching portion 5c). ing.
Therefore, when the fitting member 8a is inserted in the x direction with the insertion portion 10 at the tip with respect to the insertion hole 5 of the corner member 7a as shown in FIG. 4, the outer circumference of the fitting member 8a and the inner circumference of the insertion hole 5 Is inserted while being in sliding contact.

When the fitting member 8 a is inserted into the insertion hole 5 as described above, the tip of the fitting member 8 a comes into contact with the fitting convex portion 9. When the fitting member 8a is forcibly pushed in this state, the fitting member 8a gets over the fitting convex portion 9 while elastically deforming the fitting convex portion 9, and the tip of the fitting member 8a comes into contact with the back portion 6a. Until inserted.
This state is shown in FIG. 5 (a). Since the fitting recess 13 is positioned on the fitting projection 9 at the position where the tip of the fitting member 8a is in contact with the back portion 6a, In this state, the fitting convex portion 9 returns to the original state again by the elastic force. Accordingly, the fitting convex portion 9 and the fitting concave portion 13 are fitted, and the fitting member 8a is prevented from coming off from the corner member 7a by the retaining portion 9c of the fitting convex portion 9. In other words, once the fitting member 8a is inserted into the insertion hole 5, the fitting member 8a is brought into a fitted and killed state so as not to come off.
When the fitting member 8a is completely fitted into the corner member 7a, the tip of the guide portion 11 protrudes from the opening of the insertion hole 5 by L5.

As shown in FIGS. 2 and 3, in the fitting member 8a, the height of the insertion portion 10 is h1, while the height h3 of the guide portion 11 is h3 smaller than h1. And the height h3 of this guide part 11 is maintaining the dimensional relationship smaller than the height (height from the back part 5a to the latching | locking part 5c) h2 of the insertion hole 5. FIG. That is, the corner member 7a and the fitting member 8a maintain a relationship of h2 ≧ h1> h3.
Further, the width L6 of the guide portion 11 is smaller than the width L4 of the insertion portion 10, and the dimensional relationship of L3 (width of the insertion hole 5) ≧ L4> L6 is maintained.

Therefore, as shown in FIGS. 5A and 5B, when the fitting member 8 a is fitted into the insertion hole 5, a press-fit gap 14 is formed between the outer periphery of the guide portion 11 and the inner peripheral wall of the insertion hole 5.
The press-fitting gap 14 maintains a dimensional relationship in which the frame member 1a is press-fitted. That is, the distance (h2-h3) between the bottom surface portion 11a of the guide portion 11 and the back portion 5a of the corner member 7a is made substantially equal to the thickness of the bottom portion 3 of the frame member 1a. Further, when the frame member 1 a is press-fitted into the press-fitting gap 14, the inner periphery of the side portions 4, 4 of the frame member 1 a is tightly crimped to the outer periphery of both side wall portions 11 b, 11 b of the guide portion 11.

However, in this 1st Embodiment, since both side parts 4 and 4 become narrow gradually toward a front-end | tip, the outer periphery of both side parts 4 and 4 and the side parts 5b and 5b of the corner member 7a are crimped | bonded. There is nothing.
However, as described above, the bottom 3 is press-fitted into the press-fitting gap 14, and the inner periphery of the side parts 4 and 4 is crimped to the outer periphery of the side wall parts 11b and 11b of the guide part 11, so that the frame member 1a is press-fitted. When inserting into 14, a certain amount of pressure input is required.

The forehead component having the above-described configuration is used, for example, as shown in FIGS.
That is, as shown in FIG. 6, an adhesive is applied to the inner periphery of one end of the frame member 1d, and the guide portion 11 of the fitting member 8d is fitted between the side portions 4 and 4, so that the frame member 1d and the fitting member 8d are fitted. And unite. Then, as shown in FIG. 7, the other end of the frame member 1d is fixed to the insertion hole 6 of the corner member 7a by using a jig A as in the prior art.
As described above, when the frame member 1d, the fitting member 8d, and the corner member 7a are unitized, the frame members 1a to 1c, the fitting members 8a to 8c, and the corner members 7b to 7d are similarly unitized.
And if each fitting member 8a-8d is inserted in the insertion hole 5 in the state which clamped the plate P to the frame members 1a-1d which unitized each member, the frame | frame which hold | maintains the periphery of the plate P will be comprised easily. can do.

When used as described above, the fitting members 8a to 8d are put into the corner members 7a to 7d so that they cannot be disassembled and the plate P cannot be replaced.
On the other hand, when the forehead is used so that the plate P can be replaced, the fitting member 8 and the frame member 1 are not fixed, but the fitting member 8 is fitted into the corner member 7 in advance and is shown in FIG. Leave it in a state.
In this state, one end of the frame member 1 may be press-fitted into a press-fitting gap 14 formed between the guide portion 11 and the corner member 7. In this case, if the frame member 1 is press-fitted into the press-fitting gap 14 or the frame member 1 is pulled out, the plate P can be replaced.
In addition, since the frame member 1 is held in the press-fitting gap 14 in a press-fitted state, the frame member 1 does not play much by simply press-fitting the frame member 1 into the press-fitting gap 14 without using an adhesive. However, even in this case, it is necessary to fix the other end of the frame member 1 with an adhesive as in the conventional case.

According to the first embodiment, the frame members 1a to 1d can be easily fixed to the corner members 7a to 7d. Further, the relative positions of the frame members 1a to 1d and the corner members 7a to 7d, that is, the insertion amount, are always constant due to the fitting action of the fitting convex portion and the fitting concave portion.
When the frame members 1a to 1d and the corner members 7a to 7d are completely fixed, the inside of the frame members 1a to 1d and the outside of the fitting members 8a to 8d are fixed with an adhesive, and then If the fitting member is inserted into the insertion hole and killed, the frame members 1a to 1d and the corner members 7a to 7d can be firmly bonded.
On the other hand, when the plate P is replaced many times, an adhesive cannot be used for fixing the frame members 1a to 1d and the corner members 7a to 7d. In this case as well, the guide portion 11 and the corner member 7a are used. Since the frame members 1a to 1d are press-fitted between ˜7d, rattling does not occur.

In the first embodiment, the frame members 1a to 1d are gradually narrowed toward the open end. However, the side portions 4 and 4 may protrude from the bottom portion 3 at a right angle. However, as described above, the plate P can be firmly held by the elastic force of the side portions 4 and 4 when the width of the open end is made smaller than the width of the bottom portion 3.
In addition, in the frame members 1a to 1d, even if the width of the open end is made smaller than the width of the bottom portion 3, the frame members 1a to 1d are press-fitted into the press-fitting gap 14, so that the frame members 1a to 1d are not much. Not stick.

  Moreover, the raw material of the said frame member, a corner member, and a fitting member is not specifically limited. That is, the frame member is not limited to plastic, and does not have to be particularly elastic. However, the fitting convex portion 9 must be elastically deformed when the fitting member 8 is inserted into the insertion hole 5 and can return to the original shape again with the fitting member 8 completely fitted. I must.

In addition, in the said 1st Embodiment, although the fitting convex part 9 was formed only in one insertion hole 5 among a pair of insertion holes 5 and 6, for example, the corner member of 2nd Embodiment shown in FIG. 15, the same fitting convex portion 9 may be formed in the other insertion hole 6.
However, although the opening side of the pair of insertion holes 5 and 6 is independent, the dotted line space indicated by reference numeral 16 in the drawing on the back side (the front end side in the insertion direction of the fitting member 8) is common. Therefore, even if a fitting member is inserted from each of the insertion holes 5 and 6, only one of the fitting members can enter the common space 16. For example, when a fitting member is inserted from one insertion hole 5, this fitting member becomes an obstacle, and the fitting member inserted from the other insertion hole 6 cannot enter the range of the shared space 16.
Therefore, in the corner member 15 according to the second embodiment, the insertion hole 6 is made longer than the insertion hole 5 and the fitting protrusion inserted from the insertion hole 6 side does not enter the common space 16. 9 is formed.
In this way, since it is not necessary to completely bond the corner member and the frame member as in the prior art, the forehead can be configured more easily.

It is a top view which shows the state which assembled the structural member of the forehead of 1st Embodiment. It is a three-dimensional view of a corner member and a fitting member. It is a three-dimensional view of a fitting member. It is sectional drawing which shows the insertion process of a corner member and a fitting member. (A) is sectional drawing which shows the fitting state of a fitting member and a corner member, (b) is the (b)-(b) sectional view taken on the line in (a). It is a three-dimensional view which shows the fitting state of a fitting member and a frame member. It is a top view which shows the usage example of the structural member of the forehead of 1st Embodiment. It is sectional drawing which shows the corner member in 2nd Embodiment. It is a top view which shows the state which assembled the structural member of the conventional forehead. It is a three-dimensional view of the conventional frame member and corner member. It is sectional drawing which shows the fixing method of the conventional corner member and frame member. It is a three-dimensional view showing a conventional forehead composition process.

Explanation of symbols

1a to 1d Frame member 3 Bottom portions 5 and 6 Insertion holes 7a to 7d Corner members 8a to 8d Inserting member 9 Fitting convex portion 10 Inserting portion 11 Guide portion 13 Fitting concave portion 14 Press-fit clearance P plate

Claims (3)

  A pair of insertion holes for inserting a frame member with a U-shaped cross-section constituting the forehead is formed at a right angle, and at least one insertion hole inner peripheral wall is formed with a fitting convex portion, and can be inserted into the insertion hole. An insertion member having a U-shaped cross section that fits into the insertion hole, and a guide portion having a U-shaped cross section that is continuous with the insertion portion and has a slightly smaller outer periphery than the insertion portion. A fitting recess made of a hole or a recess is formed in the insertion portion, and when the insertion portion is inserted into the insertion hole, the fitting projection is fitted into the fitting recess and the fitting member is Forehead structure that prevents the corner member from coming off and maintains a dimensional relationship in which a press-fitting gap is formed between the insertion hole and the guide portion inserted into the insertion hole. Element.   The frame member having a U-shaped cross section is formed of a plastic that retains elasticity, and has a width on the open end side that is narrower than a width on the bottom, and a width of the plate on the open end side that is included in the forehead. The forehead component according to claim 1, which is narrower than the thickness.   The forehead structure according to claim 1 or 2, wherein the fitting member is inserted into the insertion hole, and the guide part protrudes from the opening of the insertion hole when the fitting convex part is fitted into the fitting concave part. Element.

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