JPH052138Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is mainly used to decorate the interior of the room for commemorative purposes or appreciation by attaching photographs, paintings, award certificates, etc. (hereinafter referred to as photographs, etc.) inside the interior. The present invention relates to a back plate locking structure for a picture frame.

(Prior Art) Examples of conventional technical means for removably locking the back plate of the picture frame to the frame body include the following.

Conventional example (FIG. 17) This example is one that is widely used as an orthodox one among the conventional examples, in which a photograph or the like is first placed inside the opening 32 formed by the outer frame 31 of the picture frame 30. , a back plate 33 having substantially the same shape and size as the opening 32 is inserted from above, and four locks rotatably provided by wood screws 35 or the like are provided approximately at the center of each of the four sides of the outer frame 31. The claws 34 are brought into contact with and engaged with the back surface of the back plate 33 to fix the back plate 33.
Note that the locking pawl 34 is rotated approximately 90 degrees in the direction of arrow H in the figure.
By rotating it, there is no contact with the back surface of the back plate 33, and the back plate 33 is removable.

Conventional Example (FIGS. 18 and 19) In this example, the back plate 42 is automatically fixed by simply fitting the back plate 42 into the opening 41a of the outer frame 41. That is, inside the outer frame 41, a first step part 45 and a first step part 45 are provided so that the transparent plate 43, the photograph 44, and the back plate 42 are fitted in the direction indicated by the arrow in the figure in that order and engaged with the outer frame. A second step portion 46 is formed, and locking protrusions 48 are protruded from substantially the inner tip of the outer peripheral wall 47 of the outer frame 41, and the locking protrusions 48 are provided at key points in the circumferential direction of the outer frame 41. They are located in several locations. Further, a locking end portion 42a is formed on the back plate 42 with its outer circumferential end being slightly inclined, and this locking end portion 42a is formed just when the back plate 42 abuts on the second step portion 46. The locking protrusion 4
8 and the back plate 42 is fixed. In addition, when removing the back plate 42, it is sufficient to support the outer frame 41 and press the transparent plate 43 from the front side to release the hitch.

Conventional Example (No. 20, 21) This example is of a so-called slide type, and as shown in FIG.
A transparent plate 53 and a photograph etc. 54 are placed in the second step part 52.
are inserted into the outer frame 50 by abutting the back plate 55 and sliding them in the direction of arrow T in FIG. The transparent plate 53, photograph etc. 54, and back plate 55 are sandwiched and fixed.
Note that a stopper (not shown) may be attached to the tip end 50b of the outer frame 50 to ensure fixation.

(Problems to be Solved by the Invention) In the above conventional examples, the following problems remain.

Problems with the conventional example: The process of attaching the locking pawl 34 with the wood screws 35 must be done manually, which requires labor and requires a large number of parts. Production costs are quite high.

Problems with the Conventional Example When the mold for molding the outer frame 41 becomes old, the molding precision of the locking protrusions 48 decreases and defective products are more likely to appear. Furthermore, if the back plate 42 is repeatedly attached and detached to replace photographs, etc. 44, the locking protrusion 48 or the locking end 42a of the back plate 42 will soon wear out, and the back plate 42 will become impossible to fix. It often happens.

This is because when the back plate 42 is attached to and removed from the outer frame 41, the locking end 42 of the back plate 42 is attached to the locking protrusion 4 on the outer frame 41 side.
8, the entire outer frame 41 must be forcefully elastically deformed, and at this time, an excessive frictional force is generated between the locking ends 42a and the locking protrusions 48.

Problems with the Conventional Example The outer frame 50 has a rear wall 50a and has a substantially U-shaped cross section, and its cross-sectional shape is more complicated than others, resulting in high production costs.
Since the back plate 55 and the like are simply held and fixed between the back wall 50a and the stepped portions 51 and 52, the back plate 5
5th grade is easy to slip out and cause an unexpected accident.

The present invention was created to eliminate the above problems, and its purpose is to provide a locking mechanism for the back plate of a picture frame that is easy to attach and remove, is highly durable, and can be manufactured at low cost. It is there to provide structure.

(Means for Solving the Problems) In order to achieve the above object, the technical means adopted by the present invention is that the frame 1 is used by attaching the back plate 3 detachably from the back side of the frame body 2. The back plate 3 is integrally molded and has a plurality of locking protrusions 21 protruding from its outer peripheral end, and the locking protrusions 21 are configured to be swingable in front and back directions via a hinge portion 24. and the locking part 1 provided on the back side of the frame main body 2
A locking protrusion 15 is provided on one of the locking protrusion 21 and the locking portion 14 so as to be removably engaged with the locking protrusion 21, and a locking protrusion 15 is provided on the other side so that the protrusion 15 is inserted into the other. This is because the stop hole 22 is provided.

(Function) Since the locking protrusion 21 is provided from the outer circumferential end of the back plate 3 via the hinge portion 24, the protrusion 21 can swing freely in the front and back directions, and the locking protrusion 21 A locking portion 14 provided on the back side of the frame main body 2;
A locking protrusion 15 is provided on one of the projecting pieces 21, and a locking hole 2 is formed in the other to allow the protrusion 15 to be inserted therein.
2, the locking protrusion 21 is removably locked to the locking portion 14, and therefore the back plate 3
It is also provided to be detachably attached to the frame main body 2.

(Example) Hereinafter, an example according to the present invention will be described in detail with reference to the drawings.

Figures 1 to 8 show the first embodiment, 1 is a picture frame, which is used by leaning it up as shown in Figures 1 and 2, and the frame body is made of relatively hard plastic stick made of AS or ABS resin. 2. It is constructed by assembling a back plate 3 made of relatively soft resin such as polyethylene or polypropylene, a transparent plate 4 made of glass or plastic stick, etc., legs 5, etc. Reference numeral 6 denotes a photograph, etc., which is sandwiched between the back plate 3 and the transparent plate 4 and mounted inside the frame main body 2, and whose design can be appreciated through the opening 7 formed by the main body 2. .

The main body 2 is formed into a substantially rectangular shape by outer frames 10 on four sides, and as shown in FIGS. 3 and 5, from the inner circumferential side are a first step section 11, a second step section 12, and an outer circumferential wall 13. The outer periphery of the transparent plate 4 is formed to have substantially the same shape and size as the outer periphery of the first step 11, and the outer periphery of the back plate 3 is formed to have the same shape and size as the outer periphery of the second step 12. Therefore, the transparent plate 4, the photograph, etc. 6, and the back plate 3 are fitted into the first and second step portions 11, 12, respectively, and the outer frame 10 and the back surfaces 10a, 3 of the back plate 3, respectively.
It is configured so that a is flush with the surface.

As a locking means for locking the back plate 3 attached to the frame main body 2 as described above, first, as shown in FIG. A locking portion 14 is formed by overlaying the upper surface in a substantially right-angled triangular shape when viewed from above, and a locking protrusion 15 is protruded from approximately the center of the locking portion 14. As shown, a locking protrusion 21 is integrally formed through the built-up portion 20, and a locking hole 22 is provided approximately in the center of the protrusion 21 to be fitted into the locking protrusion 15. Furthermore, the locking protrusion 2
1, by providing a notch 23 at the base to form a hinge portion 24, the locking protrusion 21 can swing freely in front and back directions, as shown in FIG. By inserting the locking protrusion 15 into the locking hole 22 from the position (unlocked state) and pressing the locking protrusion 21 with your finger so that it comes to the solid line position (locked state), it is very easy to The back plate 3 can be attached to the frame body 2 with one touch.

Further, as shown in FIG. 7, the outer peripheral side of the body portion 27 of the locking protrusion 15 and the locking hole 22 (left side in the figure)
are formed with narrow inclined surfaces 27a and 22a on the front side (lower side in the figure) of the picture frame, respectively, and furthermore, a locking protrusion 15
Since a hook portion 26a is formed at the base of the head 26 so as to protrude slightly toward the inner circumferential side (right side in the figure), the locking protrusion 21 can be inserted from the inner circumferential side toward the back surface (in the direction of arrow A in the figure).
Even if a force is applied to the locking part 14, the protrusion 21 will not easily come off from the locking part 14. On the contrary, if a force is applied from the outer circumferential side of the locking protrusion 21 toward the back surface (in the direction of arrow B in the figure), the protrusion The piece 21 is deformed to the position shown in the dashed line,
Efforts have been made so that it will come off easily this time.

Further, the front end portion 25 of the locking protrusion 21 is formed in a narrow inclined shape on the surface side of the frame (lower side in the figure) so that a finger can easily rest on it when applying a force in the direction B. Hanging recesses 25a and 25 as shown in figures a and b
A similar effect can be obtained by forming a hanging protrusion 25c as shown in FIG.

FIG. 9 shows a second embodiment. In this embodiment, a locking protrusion 15 is provided protruding approximately at the center of the locking protrusion 21, and a locking hole 22 is provided at approximately the center of the locking portion 14 to be fitted into the projection 15. The male and female structures are reversed from those in the embodiment, and the other structures are the same as in the first embodiment.

Further, FIG. 10 shows a third embodiment, and in this case, when providing the locking protrusion 21, the built-up portion 20
As shown in the figure, the back surfaces 3a, 21a, and 10a of the back plate 3, the locking protrusion 21, and the outer frame 10 are all flush with each other, and the other structures are the same as in the first embodiment. It is.

Therefore, also in the second and third embodiments,
It goes without saying that substantially the same effects as in the first embodiment can be obtained, and the same reference numerals represent the same parts in FIGS. 6, 9, and 10.

In the above embodiment, the planar shape of the frame main body 2 and the back plate 3 is approximately rectangular, but it is of course not limited to this, and can be applied to various shapes such as triangular, square, circular, etc. Further, the material of the main body 2 is not limited to resin-based materials, and may be metal, wood, etc.
It goes without saying that the material is not limited to the above-mentioned polyethylene, polypropylene, etc., as long as there is no problem with the durability of the hinge portion 24 and it can be integrally molded.

In addition, in the above embodiment, both the frame body 2 and the back plate 3 have a relatively simple structure and can be processed by integral molding, making them suitable for mass production and having a very small number of parts. , labor costs can be kept low, making it very economical. Particularly in the case of the third embodiment, since the locking protrusions 21 protruding from the back plate 3 are also fitted inside the frame main body 2, the locking portions 14 are provided at the four corners of the main body 2.
There is no need for special overlaying to form the cladding, which is more economical.

By the way, in the picture frame 1 according to the embodiment described above, the following measures have also been taken in the portion where the legs 5 are attached to the back plate 3.

As shown in FIG. 11, the leg 5 is composed of a plate-like main body 5a, a columnar head 8, and a pair of mounting arms 9. A columnar head 8 is provided. The arm 9 has its base closer to the head 8 side in the longitudinal direction of the plate-like main body 5a, and projects obliquely from both left and right ends of the plate-like main body 5a toward the head.
It is curved convexly to the side and has a substantially 1/4 circular shape in plan view, and the distal end thereof has a substantially circular cross-sectional shape to form a fitting shaft portion 9a for fitting into a bearing 3b, which will be described later.
Furthermore, the axis of the columnar head 8 and the axis of the fitting shaft portions 9a on both the left and right sides are formed to be aligned approximately on a straight line (straight line X in the figure), and the columnar head 8
As shown in FIG. 12, the prism has a substantially octagonal cross-section, and fitting protrusions 8 are formed from five of the surfaces of the octagonal prism to fit into the slits 3c, which will be described later.
A is provided protrudingly. And the back surface 3a of the back plate 3
There is a pair of bearings 3 arranged horizontally slightly above the center.
b, and slits 3c are arranged in a horizontal line (straight line Y in the figure) between them, and the entire leg 5 is pressed in the direction of the arrow C in the figure so that the straight line X and the straight line Y coincide with each other. The fitting protrusion 8a
is fitted into the slit 3c, and at the same time the fitting shaft portion 9
By fitting the leg a into the bearing 3b in the direction of the arrow D shown in the figure, the leg 5 is pivotally supported relative to the back plate 3 so as to be able to swing intermittently, as shown in FIG. That is, the columnar head 8 is always pressed in the direction of arrow C by the elasticity of the mounting arm 9 and is in contact with the back plate 3, so if you turn the leg 5 with some force, the head 8
rotates around the straight line Y, and when one of the five fitting protrusions 8a comes to the position of the slit 3c, it makes a clicking sound and the slit 3
c, the rotation of the columnar head 8 is locked, and the legs 5 are fixed at an appropriate angle α in five stages with respect to the back plate 3, so that the frame 1 can be tilted to an angle that is easy to see. can.

The shape of the columnar head 8 is not limited to the octagonal column, but may be a cylinder as shown in FIG.
The cross-sectional shape of c is not limited to the rectangular shape shown in FIG. 12, but may also be a shape with a rounded tip as shown in FIG.
It may have a substantially triangular shape as shown in the figure.

(Effects of the invention) As described above, according to the invention, when the locking protrusion 21 is provided on the outer peripheral end of the back plate 3, the protrusion 21 can swing freely in the front and back directions via the hinge part 24. Because of this structure, the back plate 3 can be attached to and detached from the frame body 2 quite easily with almost one touch.

Further, the locking protrusion 21, which is swingable in the front and back directions of the back plate 3, is engaged with and detached from the locking portion 14 of the frame body 2 through fitting and disengaging the locking protrusion 15 into the locking hole 22. Therefore, the back plate 3 can be attached and detached without forcibly elastically deforming the frame body 2, and even if the back plate 3 is repeatedly attached and detached, these locking protrusions 15 and locking holes 2
2, there is less wear, and the durability of the picture frame can be improved.

In addition, the back plate 3 and the frame body 2 can be processed by integral molding, making mass production possible.Furthermore, since the number of parts is small, labor costs such as wages can be kept to a minimum. It is economical and highly profitable.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, in which FIG. 1 is a perspective view of the frame, FIG. 2 is a side view thereof, FIG. 3 is a back plan view of the frame body, and FIG. 4 is a perspective view of the frame. 5 is a sectional view taken along the line A-A in FIG. 3, FIG. 6 is a sectional view taken along the line B-B in FIGS. 3 and 4, and FIG. 8a to 8c are enlarged sectional views of the main part showing the shape of the tip of the locking protrusion, and FIG. 9 is an enlarged sectional view of the main part showing the second embodiment. 10 is a sectional view taken along line B-B of FIGS. 3 and 4 showing the third embodiment,
11 to 16 show the structure of attaching the legs to the back plate, FIG. 11 is a perspective view thereof, and FIG. 12 is a first
Figure 1 is a sectional view taken along the line C-C in Figure 1, Figure 13 is a side view of the frame when the legs are intermittently swinging, and Figure 14 is a cross-sectional view taken along line C-C in Figure 11.
15 and 16 are enlarged sectional views of main parts showing the cross-sectional shape of the locking protrusion, FIGS. 17 to 21 show the conventional example, and FIG. 17 shows the picture frame of the conventional example. A perspective view, FIG. 18 is a perspective view explaining the assembly of a conventional picture frame, FIG. 19 is a sectional view taken along the line DD of the 18th example,
FIG. 20 is a perspective view illustrating the assembly of a conventional picture frame, and FIG. 21 is a sectional view taken along the line E--E in FIG. 20. 1... Picture frame, 2... Picture frame body, 3... Back plate, 14
... Locking portion, 15 ... Locking protrusion, 21 ... Locking protrusion, 22 ... Locking hole, 24 ... Hinge portion.

Claims (1)

[Scope of utility model registration request] In a picture frame 1 in which a back plate 3 is detachably attached to the back side of a frame body 2, the back plate 3 is integrally molded and has a plurality of locking protrusions 21 from its outer peripheral edge.
The locking protrusion 21 has a hinge portion 24.
The locking protrusion 21 and the locking portion are configured to be swingable in front and back directions via the locking protrusion 21 and the locking portion so as to be removably engaged with the locking portion 14 provided on the back side of the frame main body 2. A locking protrusion 15 is provided protrudingly on either one of the locking holes 2 and 14, and the locking hole 2 is provided with a locking protrusion 15 in order to fit the locking protrusion 15 into the other side.
A back plate locking structure for a picture frame, characterized in that it is provided with: 2.