JPS6340528B2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention relates to an assembly-type picture frame formed by assembling a single sheet-like or plate-like picture frame material, and particularly relates to an assembly-type picture frame that can be easily assembled with one touch. Regarding possible prefabricated picture frames.

(Prior Art) Generally, this type of assembled picture frame is constructed by cutting out a paper material such as cardboard or cardboard to form a sheet-like or plate-like picture frame material, and then assembling this material. Conventional assembly-type picture frames are
Even if there are various deformations in its shape and design,
Structurally, it is constructed as shown in FIGS. 1A and 1B, and a three-dimensional edge portion 2 is formed by sequentially bending inward from the outer edge of a frame material 1. For this reason, the back side of the frame material 1 must also be printed or decorated in advance.

(Problems to be Solved by the Invention) Conventional assembling picture frames are made by folding the frame material 1 sequentially inward from the outer edge to form the three-dimensional edge 2. When assembling a picture frame from raw materials, it is necessary to print on the front and back sides of the picture frame raw material 1, which poses problems such as a large amount of time and effort required for the printing work.

In addition, in conventional assembly-type picture frames, the periphery of the frame is assembled three-dimensionally from a single frame material, and adhesives such as glue or double-sided tape are required at each corner to connect the corners of the three-dimensional frame. However, assembling the picture frame was troublesome and took a long time.

This invention takes the above-mentioned points into consideration, and by simply printing on one side of the frame material, a beautiful picture frame can be easily assembled with one touch, and the corner part of the three-dimensional frame can be maintained in the assembled state without losing its shape. The purpose is to provide formal picture frames.

Another object of this invention is to eliminate the need for adhesive aids such as glue or double-sided tape, and to be able to assemble picture frames with three-dimensional edges smoothly and in a short time without using adhesives, and to maintain the assembled state. The purpose is to provide an assembly type picture frame.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above-mentioned object, a prefabricated picture frame according to the first invention of the present invention is a prefabricated picture frame in which a three-dimensional frame is formed on the side parts around the central plate part. , the inner wall, top wall, outer wall, and bottom wall are bent outward from each side of the central plate portion with the fold line as a boundary so that their surface sides are exposed to the outside. the top wall portion has tapered portions on both sides that widen from the inner wall portion toward the outer wall portion;
Locking pieces are respectively protruded on both sides with the tapered portions on both sides as boundaries, and the locking pieces face the locking pieces on the adjacent top wall so as to be engageable with each other, and the locking pieces are connected to the adjacent top wall. Both of the locking pieces that engage when inserted into the inside of the frame are integrally provided with locking claws for mutually locking the locking pieces on their opposite sides, and each of the locking pieces and the locking claws are attached to the frame material. It is integrally molded by die cutting.

Furthermore, the assembly-type picture frame according to the second invention of the present case has the following constituent features in addition to the first invention of the present case, that is, each bottom wall portion has tapered portions on both sides that gradually contract toward the outside. Lock pieces are respectively protruded from both sides of the bottom wall with the tapered portions on both sides as boundaries, and the lock pieces intersect with the lock pieces of the adjacent bottom wall so as to be engageably opposed to each other. When the lock pieces are engaged, lock claws for mutually locking the lock pieces are formed on opposite sides of the two engaging lock pieces, and each of the lock pieces, the lock claws, the lock pieces and the lock claws are attached to the frame material. It is integrally molded by die cutting.

(Function) This prefabricated picture frame has the inner wall, top wall, outer wall, and bottom wall extending outward from each side of the central plate of the frame material, with the crease line as the border, Since it can be bent so as to be exposed to the outside, the back side of the three-dimensional edge of the frame material will not be exposed to the outside. Therefore, it is only necessary to print on one side (front side) of the frame material, and there is no need to print on both sides, so a beautiful picture frame can be assembled.

Further, the top wall portion is provided with tapered portions on both sides that widen from the inner wall portion toward the outer wall portion, and locking pieces are respectively protruded from both sides of the tapered portions on both sides, and the locking pieces are The locking pieces intersect and engage with the locking pieces of the adjacent top wall, and when the locking pieces are inserted inside the adjacent top wall, the locking pieces that engage are on the opposite sides. , are integrally provided with locking claws for mutually locking the locking pieces, and since each of the locking pieces and the locking claws are integrally molded by die-cutting the picture frame material, when the picture frame is assembled, each of the adjacent top wall parts Since the locking pieces are engaged with each other and locked with each other by the locking claws, it is possible to effectively prevent the corners of the three-dimensional edge from losing their shape. At this time, the locking piece of the top wall part is inserted into the adjacent top wall part so as to cover the gap, so that it is possible to prevent a gap from forming at the top corner part of the three-dimensional edge part, which is easily noticeable to the public. Further, the locking piece and the locking claw are integrally formed by die-cutting the picture frame material,
Since the top corner of the three-dimensional edge is assembled and locked by this locking piece or locking pawl, no auxiliary materials such as adhesives or adhesive materials are required to form the corner of the three-dimensional edge. .

Furthermore, this assembly-type picture frame not only engages and locks with the top corners of the three-dimensional frame, locking pieces, and locking claws, but also has tapered portions on both sides of each bottom wall that gradually contract outwards. In preparation for this, lock pieces are made to protrude from both sides of the bottom wall with the tapered portions on both sides as boundaries, and the lock pieces face the lock pieces of the adjacent bottom wall so as to be engageable with each other, and the lock pieces are engaged with the lock pieces of the adjacent bottom wall. When the lock pieces intersect and engage, lock pawls for mutually locking the lock pieces are formed on opposite sides of both engaging lock pieces, and each of the lock pieces, the lock pawl, the lock piece, and the lock pawl Since it is integrally formed by cutting out frame materials, there is no need for any assembly auxiliary materials such as adhesives or adhesive materials to assemble this prefabricated picture frame. Can be assembled and maintained without losing its shape.

(Embodiments) Hereinafter, preferred embodiments of the assembly-type picture frame according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a developed view showing the pre-assembled state of the prefabricated picture frame of the present invention, and the reference numeral 10 in the figure is made by cutting a paper material such as cardboard or cardboard or a thin resin material such as plastic. It shows a constructed sheet-like or plate-like picture frame material. The surface of this frame material 10 is preprinted and decorated, and a rectangular central plate portion 11 is defined in the center. A pattern section 12 on which a photograph, picture, etc. is printed in advance is formed on the center plate section 11. Instead of pre-printing a picture or the like, this pattern section 12 may form a window so that a photograph or painting attached to the back side of the frame material 10 can be viewed through the window.

There are fold lines 13 on the side edges around the center plate part 11.
The inner wall portions 14a, 14b, 14c, and 14d are connected to each other with a, 13b, 13c, and 13d as boundaries, and crease lines 15a, 1 are formed on the outside of the inner wall portions 14a to 14d.
5b, 15c, and 15d as boundaries, the top wall portion 16a,
16b, 16c, and 16d are connected. moreover,
Fold lines 17a, 1 are formed on the outside of the top wall portions 16a to 16d.
The outer wall portion 18 is bordered by 7b, 17c, and 17d.
a, 18b, 18c, and 18d are connected to each other, and crease lines 19a, 19b, and 19 are formed on the outside of these.
c, 19d to the bottom wall portions 20a, 20b, 20
c, 20d are connected, and the inner wall portions 14a to 14d, top wall portions 16a to 16d, outer wall portions 18a to 18d, and bottom wall portions 20a to 20 are connected in sequence.
d is formed in an outward folding structure so that the front side thereof is exposed to the outside, and by bending the frame, the three-dimensional peripheral portion of the assembly type picture frame can be assembled.

Each of the inner wall portions 14a to 14d has an elongated rectangular shape, of which a pair of opposing inner wall portions 14a,
14c has first guide tabs 22a, 22 on both sides.
b, 22c, and 22d are connected, and this tab 2
2a to 22d cover and cover the gap between the corners of the inner wall of the three-dimensional peripheral portion from the inside when the frame is set up. Similarly, second guide tabs 23a, 23b,
23c and 23d are connected. The first guide tab and the second tab are the other inner wall portion 14 of the pair.
b, 14d; May be connected to outer wall portions 18b, 18d.

On the other hand, the top wall portions 16a to 16d are the inner wall portion 14a.
14d toward the outer wall portions 18a to 18d, and has a trapezoidal shape as a whole. Tongue-shaped locking pieces 25 and 26 are connected to each of the top wall portions 16a to 16d so as to protrude to both sides with the tapered portions on both sides as boundaries. Of these, locking pieces 2 formed on a pair of opposing top wall portions 16a and 16c
5 is a locking piece 26 of the adjacent top wall portions 16b and 16d.
is facing. The opposing locking pieces 25, 26 are arranged as shown in FIG.
On the opposite side, locking notches 27 and 28 are provided at the connecting portion between the locking piece and the top. These locking notches 27 and 28 allow the locking pieces 25 and 2 to
Locking claws 25a and 26a are defined at 6. The locking pieces 25 and 26 are inserted into the adjacent top wall portions 16a to 16d so that they can be engaged with each other, and when each of the locking pieces 25 and 26 is inserted into the adjacent top wall portions 16a to 16d,
The opposing locking pieces 25 and 26 intersect and engage with each other, and are locked by locking claws 25a and 26a.
The locking notches 27 and 28 are as shown in FIG.
It is desirable that the cut end be rounded. This is to effectively prevent damage when the opposing locking notches 27 and 28 are engaged. Therefore, each inner wall portion 14a to 14
The locking notches 27 and 28 are configured such that the distances ₁ and ₂ from the corner end of d to the tips of the locking notches 27 and 28 are approximately equal to each other. By configuring the distances ₁ and ₂ to be equal, when the prefabricated picture frame is assembled, the locking pieces 25 and 26 on the adjacent top wall parts engage with each other, and the locking claws 25a and 26
Since they are mutually locked by a, the corners of the three-dimensional edges are securely locked in the assembled state without losing their shape. When the respective corner portions of the adjacent top portions 16a to 16d are locked, the gaps between the seams of the corner portions are mutually covered by the protruding locking pieces 25 and 26, and are completely eliminated, which is aesthetically pleasing. Become.

Further, the bottom wall portions 20a to 20d are the outer wall portion 18a.
It has taper portions on both sides that gradually contract outward from ~18d. This tapered portion is formed so that adjacent bottom wall portions form a straight line, and lock pieces 30 and 31 are connected to both sides of the bottom wall portions 20a to 20d, respectively, with the tapered portion as a boundary. Of these, the lock pieces 30 formed on the pair of bottom wall parts 20a, 20c face the lock pieces 31 of the other adjacent pair of bottom wall parts 20b, 20c during assembly, and both lock pieces 30, 31 Lock claws 32, 3 on the opposite side
It has 3. The lock claws 32 and 33 are connected to the bottom wall portion 20.
The lock claws 32, 3 are formed by cutting out the center of the tapered part side of a to 20d, and are opposed during assembly.
3 are engaged and locked with each other, the corners of the bottom wall portions 20a to 20d are locked with each other.
0, 31 and lock claws 32, 33 constitute a one-touch locking mechanism 34 on the bottom wall. Distances L ₁ and L ₂ from the outer wall portion to the lock claws 32 and 33 are formed to be approximately equal to each other. In this case as well, it is desirable that the tips of the locking claws 32, 33 be rounded in order to prevent the cutting edges from being damaged.

Next, the assembly work of the assembly type picture frame of the present invention will be explained.

The surface of the frame material 10 of the assembly-type picture frame shown in FIG. 2 is printed in advance. With this printing, the center plate part 11
A pattern portion 12 such as a picture or a photograph is printed simultaneously on the paper.
Thereafter, the inner wall portions 14a to 14d of the frame material 10 are cut and raised along the fold lines 13a to 13d and bent approximately vertically. At this time, the first guide tabs 22a to 22d are adjacent to the inner wall portions 14c and 1.
It goes around to the back side (back side) of 4d, and the gap formed at the corner part is eliminated.

After that, each top wall portion 16a to 16 of the frame material 10
d to the outside along the fold lines 15a to 15d, and in this bent state, the tongue-shaped locking pieces 25 and 26 are attached to the top wall portions 15a to 15 adjacent to each other.
d, and in the inserted state, bring the opposing locking pieces 25 and 26 close together and slide them in the overlapping direction so that they intersect, and the locking notches 27 and 28
are engaged with each other and locked with each other by the locking claws 25a, 26a, and engaged. At that time, the tips of each of the locking notches 27 and 28 are connected to the inner wall portions 14a to 14d.
Since the locking notches 27 and 28 are engaged and locked by the locking claws 25a and 26a, the top wall portions 16a to 16d are formed at equal distances ₁ and ₂ from the corner ends of the The corner part has a locking claw 2
Due to the elastic force of 5a and 26a, they are more completely locked to each other, assembled, and set in the state shown in FIG. Moreover, the corner portions of each of the top wall portions 16a to 16d are formed by the locking notch 25 or 26 formed by the adjacent top wall portion and the locking piece 26 or 25.
Locking claws 25a, 2 defined by 7 or 28
Since they are elastically sandwiched together by the top wall portions 6a, the strength of the corners of each top wall portion is increased, rattling can be prevented, and the appearance is also excellent.

From the set state shown in FIG.
The outer wall portions 18a to 18d are bent outward and bent downward at 17d. At this time, the second guide tabs 23a to 23d, which are integrally molded to the pair of outer wall parts 18a and 18c, are pushed into the back sides of the adjacent outer wall parts 18b and 18c, and are pushed into the corners of the outer wall parts 18a to 18d. It covers the gap formed in the area from the inside.

Then, from the state in which the outer wall portions 18a to 18d are bent vertically downward, the bottom wall portions 20a to 20d are bent inward at the fold lines 19a to 19d,
As shown in FIG.
Place it in contact with the back side of 1. At this time, the bottom wall portion 20
The lock pieces 30 and 31 connected to the bottom walls 20a to 20 are inserted into the back sides of the bottom walls 20a to 20d adjacent to each other, and the lock claws 32 and 33 engage with each other as shown in FIG. Bottom wall portions 20a to 20d
Attach the corner and lock it. Each bottom wall part 2
By locking the corner portions 0a to 20d, a prefabricated picture frame as shown in FIG. 8 is assembled and ready for immediate use.

This assembly type picture frame has locking pieces 25 and 26 integrally molded on the top wall parts 16a to 16d engaged with each other and locked to each other by the locking claws 25a and 26, and bottom wall parts 20a to 20d. By engaging and locking the locking claws 32, 33 of the locking pieces 30, 31 formed on the holder with each other, there is no need to use adhesives or assembly aids such as glue or double-sided tape.
It is easy to assemble with just one touch. After assembling the prefabricated picture frame, the bottom wall parts 20a to 20
If necessary, an adhesive tape 36 may be attached as shown by the broken line in FIG. 7 so that d is brought into close contact with the back side of the center plate portion 11. When the adhesive tape 36 is attached, the assembled picture frame is further reinforced.

Next, a modification of this invention will be described.

FIG. 9 is a developed view showing a first modification of the invention. The assembled picture frame shown in this modification differs only in the assembly structure of the three-dimensional frame from that shown in the first embodiment, and the other configuration is the same as that shown in FIG. Identical members are given the same reference numerals and explanations will be omitted.

That is, the assembly type picture frame shown in the first modification includes the inner wall portions 14a to 14d and the outer wall portion 18.
Guide tabs 22a to 22d and 23a to one side of a to 18d (for example, at the counterclockwise side end)
23d are connected and integrally molded. Guide tabs 22a-22d, 23a-23
d is the inner and outer wall portions 14a to 14d, 18a to 18d
It may be connected to the clockwise side end of. Inner and outer wall portions 14a to 14d, 18a to 18d
Guide tabs 22a to 22d on one side of each,
Since 23a to 23d are connected, each corner of the three-dimensional line part has the same connecting structure, for example, each corner has the connecting structure of the corner shown in FIG.

FIG. 10 shows a second modification of the invention.

The assembled picture frame shown in the second modification has a top wall portion 16
Locking pieces 25A, 2 connected to the sides of a to 16d
The opposing sides of 6A are formed in an S-shape.
The rest of the structure is the same as the assembly type picture frame shown in FIG. 2 or FIG. 9, so the same reference numerals are given and the explanation will be omitted.

By forming the opposing sides of the pair of locking pieces 25A, 26A into an S-shape, the locking pieces 25A, 26A
The locking notches 27, 28 extend smoothly and smoothly from the sides, and the locking claws 25Aa, 2 are formed in the portions.
6Aa is formed, the locking pieces 25A, 2
6A can smoothly engage the locking claws 25Aa and 26Aa.

FIG. 11 shows a third modification of the invention.

The assembly type picture frame shown in this third modification has the opposite sides of the locking pieces 25B and 26B formed in a Z-shape, and the other configuration is as shown in FIG. 2 or 9.
Since it is the same as the assembly type picture frame shown in the figure, the explanation will be omitted.

FIG. 12 shows an assembly-type picture frame showing a fourth modification of the invention. This assembly type picture frame has a bottom wall portion 20a~
Lock mechanism 34A that locks the corner part of 20d
This is an improved version of . The lock mechanism 34A has lock pieces 3 connected to the sides of the bottom walls 20a to 20d.
They have 0A and 31A, respectively. Lock piece 30
When assembled, locking claws 32A and 33A, which are integrally molded with the locking pieces 30A and 31A, are engaged with the locking claws 32A and 33A. The lock claws 32A, 33A are from the bottom wall portion 20a.
It is formed by cutting out 20d. The tapered sides of the adjacent bottom wall portions 20a to 20d are located on a straight line, and the lock claws 32A and 33A are cut out from the bottom wall portions 20a to 20d side from the straight line. Therefore, the opposing lock claws 32A and 3
3A and lock each other, the corner portions of the bottom wall portions 20a to 20d are interlocked and locked.

In addition, in FIG. 12, the top wall portions 16a to 16
Opposite ends of the locking pieces 25c and 26c connected to d are formed into a shape similar to the S-shape shown in FIG. The operation and effect thereof are almost the same as those shown in FIG. 10, so a description thereof will be omitted.

The assembled picture frame shown in FIG. 13 is a fifth modification of the invention. This prefabricated picture frame also has an improved locking mechanism 34B, similar to that shown in FIG.

This locking mechanism 34B is connected to the bottom wall portions 20a to 20d.
The lock piece 30 is connected via the tapered side of the lock piece 30.
B, 31B, each opposing lock piece 30B,
31B, for example, has lock claws 32B and 33B on the clockwise side (may be on the counterclockwise side),
Lock claws 32B, 33B and bottom wall portions 20a to 20d
Locking notches 38B and 39B are formed between the side edges of the lock.

Therefore, when the assembled picture frame shown in FIG. 13 is assembled, each of the opposing lock pieces 30B, 31
B engage with each other, and the lock claws 32B, 33B
are locked when the locking notches 38B and 39B intersect with each other, thereby locking each corner of the bottom wall portions 20a to 20d and preventing their release.

In addition, this prefabricated picture frame has a tongue-shaped lock on the bottom wall as shown by the dashed line in Fig. 9 in order to stably fix the three-dimensional frame to the center plate when the picture frame is assembled. By forming a piece 45 and engaging this locking piece 45 with a locking notch 46 (indicated by a dashed line) formed in the inner wall parts 14a to 14d (or the center plate part), an even stronger reinforcement structure can be achieved. It may be configured to do the following. In this case, it is preferable that the locking notch 46 is formed by forming two parallel cutting lines.

Furthermore, in order to stably fix the assembled picture frame, a fixing tongue piece 47 (see FIG. 9) may be cut out and formed on any bottom wall.

Furthermore, by making the inner wall portion and the outer wall portion different in height (width), the top wall portion may be formed as an inclined wall surface during assembly. Furthermore, it is not necessary that the inner wall portion and the outer wall portion are vertically erected, and the inner wall portion and the outer wall portion may be configured to form an inclined wall surface when the prefabricated picture frame is assembled.

〔Effect of the invention〕

As described above, in the prefabricated picture frame according to the present invention, from each side of the central plate of the frame material, the inner wall part, the top wall part,
Since the outer wall portion and the bottom wall portion are made bendable so that their front sides are exposed to the outside, the back side of the three-dimensional edge of the frame material is not exposed to the outside. Therefore, it is only necessary to print on one side (the front side) of the picture frame material, and there is no need to print on both sides, so that a beautiful picture frame can be easily assembled.

Further, the top wall portion is provided with tapered portions on both sides that widen from the inner wall portion toward the outer wall portion, and locking pieces are respectively protruded from both sides of the tapered portions on both sides, and the locking pieces are When the locking pieces of the adjacent top wall portions are engaged with each other, and when the locking pieces are inserted into the inner side of the adjacent top wall portions, the locking pieces that intersect and engage are on the opposite side. , are integrally provided with locking claws for mutually locking the locking pieces, and since each of the locking pieces and the locking claws are integrally molded by die-cutting the picture frame material, when the picture frame is assembled, each of the adjacent top wall parts Since the locking pieces intersect and are engaged with each other and are elastically locked together by the locking claws, it is possible to effectively prevent the corners of the three-dimensional edge from losing their shape. At this time, the locking piece of the top wall part is inserted into the adjacent top wall part so as to cover the gap, so that it is possible to prevent a gap from forming at the top corner part of the three-dimensional edge part, which is easily noticeable to the public. Also,
Since the locking pieces and locking claws are integrally molded by die-cutting the picture frame material, there is no need to form the locking pieces and locking claws as independent auxiliary members. Since the top corner of the three-dimensional frame is assembled and locked, there is no need for auxiliary materials such as adhesives or adhesive materials to form the corner of the three-dimensional frame. can be assembled easily.

Furthermore, this prefabricated picture frame not only engages and locks the top corners of the three-dimensional frame with locking pieces or locking claws, but also has tapered portions on both sides of each bottom wall that gradually contract outwards. In preparation for this, locking pieces are made to protrude from both sides of the bottom wall with the tapered portions on both sides as boundaries, and the locking pieces are opposed so as to be able to engage with the locking pieces on the adjacent bottom wall. When the lock pieces are crossed and engaged, lock pawls for mutually locking the lock pieces are formed on opposite sides of the two engaging lock pieces, and each of the lock pieces, the lock pawls,
Since the lock pieces and lock claws are integrally molded by die-cutting the picture frame material, there is no need for any assembly aids such as adhesives or adhesive materials to assemble this prefabricated picture frame. Also, the assembled picture frame can be assembled easily and in a short time, and can be maintained in the assembled state without losing its shape.

[Brief explanation of drawings]

1A and 1B are a sectional view and a developed view showing a conventional sectional picture frame, FIG. 2 is a developed view of a frame material showing an embodiment of a sectional picture frame according to the present invention, and 3
The figure is an enlarged view of the corner part of the picture frame material shown in the unfolded state, Figure 4 is an enlarged view of part A in Figure 3, and Figures 5 to 7 show the assembly procedure when assembling the frame from the picture frame material. 8 is a perspective view showing the assembled picture frame of the present invention, FIG. 9 is an exploded view showing the first modification of the invention in the unfolded state, and FIGS. FIGS. 13A and 13B are partial views respectively showing second to fifth modifications of the assembly type picture frame according to the present invention. 10... Frame material, 11... Center plate part, 12...
...Picture section, 13a-13d, 15a-15d, 1
7a-17d, 19a-19d...Fold line, 14
a to 14d...Inner wall portion, 16a to 16d...Top wall portion, 18a to 18d...Outer wall portion, 20a to 2
0d...Bottom wall portion, 22a to 22d, 23a to 23
d...Guide tab, 25, 25A, 25B, 2
5C, 26, 26A, 26B, 26C... Locking piece, 25a, 26b, 25Aa, 26Aa... Locking claw, 27, 28... Locking notch, 30, 30
A, 30B, 31, 31A, 31B...Lock piece, 32, 32A, 32B, 33, 33A, 33
B...Lock claw, 34, 34A, 34B...Lock mechanism, 38A, 38B...Lock notch.

Claims (1)

[Scope of Claims] 1. In a prefabricated picture frame in which a three-dimensional edge is formed on the side portions around the central plate portion, inner wall portions extend outward from each side of the central plate portion along a fold line. , a top wall, an outside wall, and a bottom wall are successively connected in a bendable manner so that their surfaces are exposed to the outside, and the top wall expands from the inside wall toward the outside wall. A tapered portion is provided on both sides, and locking pieces are respectively protruded on both sides of the tapered portions on both sides, and the locking piece faces the locking piece on the adjacent top wall portion so as to be engageable with the locking piece. When the locking pieces are inserted inside the adjacent top wall portions, the locking pieces that are engaged cross each other and are integrally provided with locking claws for mutual locking of the locking pieces on opposite sides thereof, and each of the above-mentioned An assembly-type picture frame characterized in that the locking pieces and the locking claws are integrally molded by die-cutting the frame material. 2. In a prefabricated picture frame in which a three-dimensional edge is formed on the sides around the center plate, the inner wall, top wall, and outer side are arranged outward from each side of the center plate at the crease line. The wall portion and the bottom wall portion are successively connected in a bendable manner so that their surface sides are exposed to the outside, and the top wall portion has tapered portions on both sides that widen from the inner wall portion toward the outer wall portion. , locking pieces are respectively protruded from both sides of the top wall portion with the tapered portions on both sides as boundaries, and the locking pieces face engageably with the locking pieces on the adjacent top wall portion, and the locking pieces When inserted into the inside of the adjacent top wall portion, the two engaging pieces intersect with each other and are integrally provided with locking claws for mutual locking of the locking pieces on opposite sides, while each of the bottom The wall portion is provided with tapered portions on both sides that gradually contract toward the outside, and locking pieces protrude from both sides of the bottom wall portion with the tapered portions on both sides as boundaries, and the locking pieces engage the locks of the adjacent bottom wall portions. When the lock pieces of the bottom wall portions that are engageably opposed to each other and that are adjacent to each other are crossed and engaged,
Lock pawls for mutually locking the lock pieces are formed on opposite sides of the lock pieces to be engaged, and each of the locking pieces,
An assembly-type picture frame characterized in that the locking claws, locking pieces, and locking claws are integrally molded by die-cutting the picture frame material.