JP3242529U - Back plate holder and picture frame - Google Patents

Abstract

The present invention provides a back plate holder and a picture frame that can be used for works of various thicknesses. A back plate holder (100) is made of resin and used to hold down a back plate (20) of a picture frame (1). The back plate retainer 100 includes a first plate portion 110 , a second plate portion 120 and a third plate portion 130 . The first plate portion 110 has locking holes 112 in which the screws 30 for fixing the back plate retainer 100 to the frame of the picture frame 1 are locked. The second plate portion 120 has a contact portion 122 that contacts the back plate 20 . The third plate portion 130 extends straight from the first plate portion 110 toward the second plate portion 120 . The third plate portion 130 has a flat plate shape extending obliquely with respect to the first plate portion 110 . [Selection drawing] Fig. 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back plate holder used to hold down the back plate of a picture frame, and a picture frame.

A picture frame is used to put works such as paintings, photographs, certificates, etc., to improve the appearance of the work and to protect the work. Conventionally, a picture frame has a frame and a back board, and it is known that a back board holder called a dragonfly is used to fix the back board of the picture frame to the frame (see Patent Document 1). ). This back plate retainer has an attachment portion for attachment to the frame and a pressing portion for pressing the back plate. The attachment part is rotatably attached to the frame, and when the work is to be replaced, the back plate holder is rotated to remove the back plate from the frame.

JP 2002-355154 A

By the way, the thickness of the work put in the frame varies. In addition, there are cases where a framing mat is sandwiched between the work to improve the appearance of the work, and the number of framing mats is not limited to one, so the total thickness of the work that can be put in the frame may vary greatly depending on the work. There is In order to deal with this, conventional picture frames are adjusted so that the entire work has a predetermined thickness by changing the thickness and number of backing plates.

However, it is troublesome to prepare backing boards of different thicknesses or to change the number of backing boards in order to accommodate different works, so there is a demand for backing clamps that can handle various thicknesses. rice field.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a back plate clamp and a picture frame that can be used for works of various thicknesses.

In order to solve the above problems, the back plate retainer according to the present invention is made of resin and used to hold down the back plate of a picture frame.
The back plate retainer includes a first plate portion, a second plate portion, and a third plate portion.
The first plate portion has locking holes in which screws for fixing the back plate retainer to the frame of the picture frame are locked.
The second plate portion has a contact portion that contacts the back plate.
The third plate portion extends straight from the first plate portion toward the second plate portion. The third plate portion has a flat plate shape extending obliquely with respect to the first plate portion.

According to this configuration, one end of the back plate retainer is screwed to the frame, and the other end of the back plate retainer comes into contact with the back plate to press the back plate against the frame. Further, since the third plate portion has a flat plate shape extending obliquely with respect to the first plate portion, it can be bent according to the thickness of the picture to be put in the frame and the back plate. For this reason, the back plate holder can be used for works of various thicknesses.

Further, the third plate portion may have a smaller thickness than the first plate portion.

According to this configuration, the third plate portion is thinner than the first plate portion, so that when the back plate is pressed, the first plate portion is less likely to bend and the third plate portion is more likely to bend. As a result, the fixing of the backing plate holder is stabilized, and the backing plate holder can be applied to a work having a large thickness.

The third plate portion has a first surface facing the back plate, a second surface opposite to the first surface, and ribs protruding from the second surface. A rib extending to the part may be provided.

According to this configuration, it is possible to ensure the elastic restoring force of the third portion.

The third plate portion has a first surface facing the back plate and a second surface opposite to the first surface, and the edge of the first surface is chamfered or rounded. It is good also as a structure which has.

According to this configuration, the edge of the first surface is chamfered or rounded, so that when the back plate is replaced, even if the back plate retainer is rotated, the edge of the third portion is It is hard to get caught on the frame and hard to damage the frame 10.例文帳に追加

Also, the screw is a countersunk screw and has a head and a threaded portion extending from the head. Moreover, the locking hole has a through hole through which the threaded portion passes and a concave portion into which the head portion is inserted. Then, the screw may be configured to contact a portion where the through hole and the recess are connected.

With this configuration, the contact area between the locking hole and the screw is small, so that the screw is less likely to rotate together when the back plate retainer is rotated. Since it is difficult for the screws to rotate together, loosening of the screws can be suppressed.

Further, the portion where the screw contacts the through hole may be configured so that the distance from the center of rotation is smaller than the peripheral edge of the head.

According to this configuration, when the back plate retainer 100 is rotated, the torque that causes the screws to rotate together becomes small, so loosening of the screws can be suppressed.

Further, the first plate portion may have a gate mark for injection molding, and the gate mark may be positioned between the locking hole and the third plate portion.

According to this configuration, since the gate mark is located between the first hole and the third plate portion, the flow of resin during injection molding is improved.

To solve the above problems, the picture frame according to the present invention includes a frame, a back plate, a back plate retainer, and screws.
The back plate holder is made of resin and used to hold down the back plate of the picture frame.
The back plate retainer includes a first plate portion, a second plate portion, and a third plate portion.
The first plate portion has locking holes in which screws for fixing the back plate retainer to the frame of the picture frame are locked.
The second plate portion has a contact portion that contacts the back plate.
The third plate portion extends straight from the first plate portion toward the second plate portion. The third plate portion has a flat plate shape extending obliquely with respect to the first plate portion.

According to this configuration, one end of the back plate retainer is screwed to the frame, and the other end of the back plate retainer comes into contact with the back plate to press the back plate against the frame. Further, since the third plate portion has a flat plate shape extending obliquely with respect to the first plate portion, it can be bent according to the thickness of the picture to be put in the frame and the back plate. For this reason, it is possible to correspond to works with frames having various thicknesses.

According to the present invention, it is possible to provide a back plate holder and a picture frame that can be used for works of various thicknesses.

It is the perspective view (a) which shows the frame which concerns on this embodiment, and sectional drawing (b) of a frame. 1 is a perspective view showing a picture frame from which a back plate, a work, a frame mat, and a transparent plate are removed; FIG. FIG. 3 is a perspective view of a screw and a back plate retainer; It is the front view (a) and rear view (b) of a back board holding tool. FIG. 4A is a cross-sectional view of the back plate retainer taken along line AA, FIG. Cross-sectional view of the frame when a work with a small thickness is placed (a), Cross-sectional view of the frame when a work with a slightly thicker thickness is placed (b), and a frame when a work with a large thickness is placed is a cross-sectional view (c) of FIG.

Next, embodiments of the present invention will be described in detail with appropriate reference to the drawings.
A picture frame 1 is for displaying a work W such as a painting, a photograph, or a certificate of merit. As shown in FIGS. 1(a) and 1(b), the frame 1 includes a frame 10, a back plate 20, screws 30, and a back plate retainer 100. As shown in FIGS.

In this embodiment, as shown in FIG. 2, the frame 1 has a work W, a frame mat 40 and a transparent plate 50 sandwiched between the frame 10 and the back plate 20 . The frame mat 40 is positioned between the work W and the transparent plate 50 to improve the appearance of the work W. The frame mat 40 has the same outer dimensions as the inner dimensions of the frame 10, and a window for displaying the work W is formed. Since the size of the frame 1 and the size of the work W do not necessarily match, the frame mat 40 fills the margins of the frame 1 and the work W. The transparent plate 50 is made of acrylic resin, glass, or the like, and is arranged in front of the work W in order to protect it.

The frame 10 is formed so as to surround the work W on all four sides. The material and shape of the frame 10 are arbitrary.

The back plate 20 has a plate shape with a predetermined thickness. The back plate 20 supports the work W placed in the frame 1 from the rear side so that the work W is not deformed. The thickness and strength of the back plate 20 may vary depending on the size of the frame 1, the type of work, and the like.

As shown in FIG. 3, screws 30 secure the back plate retainer 100 to the frame 10 . In this embodiment, the screws 30 are countersunk screws. The screw 30 has a head portion 31 for locking the screw 30 and a screw portion 32 having a screw thread. The head 31 has an operation surface 31A and an inclined surface 31B. The operation surface 31A has a cross groove for rotational operation with a Phillips screwdriver. The inclined surface 31B is a tapered surface that connects the operation surface 31A and the screw portion 32 . The threaded portion 32 extends from the head portion 31 and has a sharp tip.

The back plate retainer 100 is used to press the back plate 20 onto the frame 10. - 特許庁In this embodiment, four back plate holders 100 are arranged for one frame 1 (see FIG. 1). The back plate retainer 100 is made of resin. For example, the back plate retainer 100 is made of polycarbonate. The back plate retainer 100 includes a first plate portion 110 , a second plate portion 120 and a third plate portion 130 .

As shown in FIGS. 4A and 4B, the first plate portion 110 has a main body portion 111, locking holes 112, and gate traces 113. As shown in FIGS. The first plate portion 110 has a plate shape.

The locking hole 112 is a hole in which the screw 30 is locked. The screw 30 fixes the back plate retainer 100 to the frame 10 by screwing the screw portion 32 into the frame 10 with the head 31 locked in the locking hole 112 . The locking hole 112 has a through hole 112A and a recess 112B.

As shown in FIGS. 5A and 5B, the through hole 112A is a hole having a diameter D1. The diameter D1 is a size through which the threaded portion 32 passes but the head portion 31 does not pass. The through hole 112A is a portion through which the threaded portion 32 of the screw 30 passes.

As shown in FIG. 5(b), the recess 112B is a recess having a diameter D2. The recess 112B is a portion into which the head 31 of the screw 30 is inserted. Diameter D2 is larger than diameter D3 of head 31 (D3<D2). That is, when the head 31 enters the recess 112B, the periphery of the head 31 does not contact the periphery of the recess 112B.

112 C of taper surfaces are formed in the part which 112 A of through-holes and the recessed part 112B are connected. When the screw 30 is screwed into the frame 10 through the locking hole 112, the screw 30 contacts the tapered surface 112C. A peripheral diameter D4 of the tapered surface 112C is smaller than a diameter D3 of the screw head 31 (D4<D3). That is, the portion where the screw 30 contacts the through hole 112</b>A has a smaller distance from the center of rotation than the peripheral edge of the head 31 . Also, the tapered surface 112</b>C has a smaller area than the inclined surface 31</b>B of the screw 30 .

Gate marks 113 are gate marks for injection molding. The gate trace 113 is formed with a dent, and the cut trace of the runner is located at the bottom of the dent. The cut marks of the runner may protrude or be dented, and have an irregular shape. there is The gate mark 113 is located between the locking hole 112 and the third plate portion 130 (see also FIG. 4(b)).

The second plate portion 120 has a body portion 121 , a contact portion 122 and a second concave portion 123 . The contact portion 122 is a portion that contacts the back plate 20 . The contact portion 122 protrudes from the body portion 121 in a direction away from the first plate portion 110 . The second recessed portion 123 is a recess formed in the body portion 121 . The second concave portion 123 is formed on the surface opposite to the surface on which the contact portion 122 is arranged.

As shown in FIG. 5( a ), the third plate portion 130 extends straight from the first plate portion 110 toward the second plate portion 120 . The third plate portion 130 has a flat plate shape extending obliquely with respect to the first plate portion 110 . The third plate portion 130 is thinner than the first plate portion 110 . Specifically, the third plate portion 130 has a plate shape with a thickness T2 smaller than the thickness T1 of the first plate portion 110 (T2<T1). In this embodiment, the thickness T2 is less than half the thickness T1.

The third plate portion 130 has a first surface 130A facing the back plate 20 and a second surface 130B opposite to the first surface 130A. As shown in FIGS. 3 and 4 , the third plate portion 130 has a body portion 131 and ribs 132 .

The rib 132 protrudes from the second surface 130B. The rib 132 is positioned at the center of the third plate portion 130 in the lateral direction. The rib 132 extends continuously in the longitudinal direction of the third plate portion 130 . Specifically, rib 132 extends from first plate portion 110 to second plate portion 120 . As shown in FIG. 5(c), the edge 130E of the first surface 130A of the third plate portion 130 is rounded. Similarly, the edge 130F of the second surface 130B of the third plate portion 130 is rounded.

Next, a method for attaching the work W to the frame 1 will be described.
When attached to the frame 10, the back plate retainer 100 is rotatable between a pressing position shown in FIGS. 1(a) and 1(b) and a retracted position shown in FIG. The pressing position is a position where the back plate retainer 100 presses the back plate 20 . The avoidance position is a position on the frame 10 after retreating from the pressing position.

As shown in FIGS. 1(a) and 1(b), when the back plate retainer 100 is positioned at the pressing position, the second plate portion 120 contacts the back plate 20, so that the back plate retainer 100 is in contact with the back plate. 20 is pressed against the frame 10;

As shown in FIG. 2, when the back plate retainer 100 is positioned at the retracted position, the second plate portion 120 contacts the frame 10 and does not contact the back plate 20. is not pressed against the frame 10.

When the work W is to be put in or taken out of the frame 1, the user rotates the back presser 100 with a finger or a tool to the retracted position. Then, as shown in FIG. 1, after the back plate 20, the work W, the frame mat 40 and the transparent plate 50 are placed in the frame 1, the user rotates the back plate holder 100 to the pressing position with a finger or a tool. .

As shown in FIG. 6(a), when a work W1 having a small thickness is placed in the picture frame 1, the third plate portion 130 of the back plate retainer 100 hardly warps and remains straight. The plate 20 is pressed.

As shown in FIG. 6B, when a work W2 having a slightly large thickness is placed in the frame 1, the third plate portion 130 of the back plate holder 100 presses the back plate 20 in a slightly warped state.

As shown in FIG. 6(c), when a thick work W3 is placed in the frame 1, the third plate portion 130 of the back plate retainer 100 presses the back plate 20 in a considerably warped state.

As described above, according to this embodiment, the following effects can be obtained.
With the conventional back plate holder, it was difficult to handle works of various thicknesses without changing the thickness or the number of back plates. However, according to the picture frame 1 of the present embodiment, one end of the back plate holder 100 is screwed to the frame 10, and the other end of the back plate holder 100 is in contact with the back plate 20 to attach the back plate 20 to the frame 10. When pressed, the third plate portion 130 can be bent according to the thickness of the work W placed in the frame 10 because the third plate portion 130 has a flat plate shape extending obliquely with respect to the first plate portion 110 . For this reason, the back plate holder 100 can handle works W of various thicknesses. Specifically, as shown in FIGS. 6(a), (b), and (c), any of the thin work W1, the slightly thick work W2, and the thick work W3 can be used without changing the thickness of the back plate 20. Even when the work is placed in the picture frame 1, the back plate holder 100 bends according to the thickness of the work to properly press the back plate 20. - 特許庁

Also, the thickness T2 of the third plate portion 130 is smaller than the thickness T1 of the first plate portion 110 (T2<T1). Therefore, when the back plate 20 is pressed, the first plate portion 110 is difficult to bend and the third plate portion 130 is easy to bend. Since the first plate portion 110 is hard to bend, the fixing of the back plate clamp 100 is stabilized. can also be handled.

In addition, since the third plate portion 130 has the rib 132 that protrudes from the second surface 130B and extends from the first plate portion 110 to the second plate portion 120, the elastic restoring force of the third plate portion 130 can be secured. . Further, since the ribs 132 increase the strength of the third plate portion 130, the back plate retainer 130 is less likely to break even when the third plate portion 130 is bent.

In addition, since the edge 130E of the first surface 130A of the third plate portion 130 is rounded, even if the back plate retainer 100 is rotated when the back plate 20 is replaced, the edge of the third portion 130 does not remain in the frame. It is hard to get caught on the rim and hard to damage the frame 10.例文帳に追加

In addition, since the edge 130F of the second surface 130B of the third plate portion 130 is rounded, the user does not feel uncomfortable when touching the edge 130F of the second surface 130B when replacing the back plate 20. FIG.

The locking hole 112 into which the screw 30 is locked has a through hole 112A through which the screw portion 32 passes and a recess 112B into which the head 31 is inserted. is connected to the tapered surface 112C. As a result, the contact area between the locking hole 112 and the screw 30 is reduced, so that the screw 30 is less likely to rotate when the back plate retainer 100 is rotated. Loosening of the screw 30 can be suppressed by making it difficult for the screw 30 to rotate together.

Further, since the portion where the screw 30 contacts the through-hole 112 is closer to the center of rotation than the peripheral edge of the head 31, when the back plate retainer 100 is rotated, the torque that causes the screw 30 to rotate along with it is increased. becomes smaller, it is possible to suppress loosening of the screw.

In addition, since the gate mark 113 is positioned between the locking hole 112 in the thick first plate portion 110 and the third plate portion 130, the flow of resin during injection molding is improved. Further, even if the cut mark of the runner of the gate mark 113 protrudes a little, it fits within the recess of the gate mark 113, so even if the back plate retainer 100 is rotated, the frame 10 is hardly damaged.

The present invention is not limited to the above embodiments, and can be used in various forms as exemplified below.

In the above-described embodiment, the work, the frame mat and the transparent plate are sandwiched between the frame and the back plate, but the frame mat and the transparent plate can be omitted, and other members may be sandwiched. .

In the above-described embodiment, the screw for fixing the back plate retainer 100 was a countersunk screw, but it is not limited to a countersunk screw. For example, screws of other shapes such as flat screws, pan screws, and truss screws may be used.

In the above-described embodiment, the operation surface of the screw has a cross groove for rotational operation with a Phillips screwdriver, but the screw has grooves and shapes for operation with a flat-blade screwdriver, a hexagonal wrench, or the like. You may have

In the above-described embodiment, four back plate clamps are arranged for one picture frame, but one to three back plate clamps may be arranged for one picture frame, or five or more. may be placed.

In the above-described embodiment, the back plate retainer is made of polycarbonate, but the type of resin is not particularly limited, and other resins such as acrylic, polyethylene, and polypropylene may be used.

In the above-described embodiment, the tapered surface 112C, which is the portion where the through hole 112A and the recessed portion 112B of the first plate portion 110 of the back plate retainer 100 are connected, is formed in a tapered shape. good.

In the embodiment described above, the edge of the first surface of the third plate portion is rounded, but the edge of the first surface may be chamfered without being rounded. Even with this configuration, when the back plate is replaced, the edge of the third portion 130 is less likely to get caught on the frame 10 and the frame 10 is less likely to be damaged even if the back plate retainer is rotated.

Each element described in the above embodiment and modifications may be implemented in any combination.

Reference Signs List 1 frame 10 frame 20 back plate 30 screw 31 head 32 screw portion 40 frame mat 50 transparent plate 100 back plate holder 110 first plate portion 111 body portion 112 locking hole 120 second plate portion 121 body portion 122 contact portion 130 Third plate portion 131 Body portion 132 Rib W Work

Claims (8)

A back plate holder made of resin and used to hold down the back plate of a picture frame,
a flat plate-shaped first plate portion having an engaging hole for engaging a screw for fixing the back plate retainer to the frame of the picture frame;
a second plate portion having a contact portion that contacts the back plate;
A third plate portion extending straight from the first plate portion toward the second plate portion, the third plate portion being a flat plate extending obliquely with respect to the first plate portion. back plate holder. The back plate retainer according to claim 1, wherein the thickness of the third plate portion is smaller than that of the first plate portion. The third plate portion is
a first surface facing the back plate;
a second surface opposite to the first surface;
3. The back plate retainer according to claim 2, further comprising a rib that protrudes from the second surface and extends from the first plate portion to the second plate portion. The third plate portion has a first surface facing the back plate and a second surface opposite to the first surface,
3. The back plate retainer according to claim 2, wherein the edge of said first surface is chamfered or rounded. the screw is a countersunk screw and has a head and a threaded portion extending from the head;
the locking hole has a through hole through which the threaded portion passes and a concave portion into which the head portion is inserted;
2. The back plate retainer according to claim 1, wherein the screw contacts a portion where the through hole and the recess are connected. 6. The back plate retainer according to claim 5, wherein the portion of the screw that contacts the through hole has a smaller distance from the center of rotation than the peripheral edge of the head. The first plate portion has a gate mark for injection molding,
3. The back plate retainer according to claim 2, wherein the gate mark is positioned between the locking hole and the third plate portion. the frame;
the back plate;
a back plate retainer according to any one of claims 1 to 7;
A picture frame comprising: the screw;

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