Floating picture frame with a removable canvas structure

Abstract

This detachable picture frame allows for easy attachment and removal of the canvas using manual fixing screws without the need for tools. It protects the canvas fabric directly behind the painted image from wear and tear, maintaining surface smoothness while achieving a floating effect. It also offers high practicality and safety, allowing anyone to accurately center the frame in an instant. [Solution] The device comprises a front frame 1 and a back panel unit on the rear side. A base block is provided protruding from the center of the front of the back panel base, and float spacers are arranged side by side adjacent to both the upper and lower ends of the base block. The float spacers prevent the canvas fabric 42 from coming into contact with the base block, thus preventing the screen from bulging, while keeping the canvas 4 suspended and in a position where it is not visible from the front. In addition, a slit-shaped groove (back panel side center mark) is formed in the center of the width direction of the spacer, allowing the user to visually align it with a mark placed on the canvas side for positioning. At least one fixing screw is provided on the back panel base to secure the lower edge of the canvas wooden frame.

Description

Technical Field

[0001] The present invention relates to a frame for framing an object such as a canvas, and more particularly to a detachable frame that can firmly fix the object to a back plate unit without using tools and exhibits a visual effect (floating effect) in which the object appears to float when viewed from the front side.

Background Art

[0002] Conventionally, when framing a canvas on which an oil painting or the like is drawn, a frame that directly screws (nails) the wooden frame of the canvas from the back side of the frame and fixes it is generally known. In recent years, in order to enhance the design, so-called "floating frames" or "float frames" that make the canvas appear to float in the air when viewed from the front of the frame have also been proposed. Furthermore, devices for detachably attaching a canvas (panel) to a frame using spring members, guide members, various attachments, etc. have also been proposed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the conventional frames and the devices described in Patent Document 1 have the following problems. Firstly, when fixing the canvas, it was necessary to fasten it to the wooden frame from the back using tools or to interpose complex attachment components such as numerous springs and guide plates. This resulted in a large number of parts and a complex structure, as well as the problem of the effort and difficulty of attaching and detaching the canvas for the average user (buyer). Secondly, in conventional floating structures, the delicate canvas fabric that wraps around the sides of the canvas rubs directly against the backing board and fixing components on the back, creating a risk of wear and tear or damage to the fabric due to vibrations during display or transport. Thirdly, when positioning the canvas in the center of the frame, it was necessary to rely on estimation or measurement with a ruler, making the positioning process of accurately balancing the left and right sides extremely cumbersome, and even a slight misalignment would greatly detract from the aesthetics when displayed.

[0005] This invention was made to solve the aforementioned problems, and aims to provide a detachable picture frame that allows the canvas to be easily attached and detached and secured with manual hand-tightened screws without the use of any tools, while ensuring the canvas fabric is protected and achieving a perfect floating effect, and allowing anyone to center it in an instant. [Effects of the Invention]

[0006] The detachable picture frame according to this invention provides the following extremely excellent effects. Firstly, the canvas frame is placed on the upper mounting section of the base block, and a hand-tightened screw is tightened from the bottom edge to "brace the frame from the inside to the outside." This extremely simple fixing structure allows users to attach and detach the canvas very easily and securely using only their fingertips, without needing any tools such as screwdrivers. It can be fixed in place. Furthermore, this tension fixing with screws allows for stepless fine adjustment, perfectly absorbing the slight individual differences in external dimensions (manufacturing tolerances) that often occur in commercially available canvas frames, and ensuring a secure fixation without any wobbling. Moreover, unlike conventional fixing methods that directly drive screws deep into the wooden frame and damage or destroy the frame itself, only minor contact marks from the screw tips remain, safely protecting the canvas itself. In addition, metal threaded inserts are embedded in the base block, so the screw holes will not be stripped even after repeated opening and closing of the screws, achieving exceptional durability that can withstand long-term repeated use.

[0007] Secondly, the float spacer, located on the front side of the backing board base, is designed to be positioned between the backing board base and the canvas frame. This prevents the back of the canvas itself (the fabric portion directly behind the painted surface) from rubbing against or being compressed by the base block on the back when the canvas is framed. This effectively prevents wear and tear on the canvas fabric. Furthermore, because there is no upward pressure from the back by the base block, the smoothness of the canvas surface is not disrupted, completely preventing problems such as the flat surface of the painting becoming raised. In addition, the outer frame can be easily attached and detached and replaced while the canvas remains fixed to the backing board unit, offering high versatility by allowing the frame design to be freely changed to suit the exhibition environment without the hassle of removing the canvas from the backing board unit each time. Moreover, since the spacer itself is completely hidden from the front (viewer's side), **the entire outer perimeter of the canvas, including the top, bottom, left, and right sides, can be seen without obstruction,** providing a perfect floating effect that makes the canvas appear to be beautifully suspended in mid-air, safely and with the highest quality.

[0008] Thirdly, by simply aligning the center mark (slit-shaped groove) on the back panel side, engraved in the widthwise center of the float spacer, with the center mark on the canvas side, which the user places themselves on the short side of the canvas, anyone can instantly and accurately position the canvas in the exact center (symmetrically) of the frame without using any measuring tools such as rulers.

[0009] Fourthly, in this invention, a configuration can be adopted in which at least one fixing screw is provided for fixing the canvas wooden frame (41) to the backboard base (21) (preferably, a configuration in which two or more screws are provided at spaced intervals from each other). Even with only one fixing screw, the canvas (4) is stably supported by the strong interlocking with the float spacer (5) and the base block (22) described above. However, by providing multiple screws, a high level of safety redundancy can be obtained, which doubles the prevention of unexpected tilting of the canvas (4) or rotation and detachment from the frame in the event that a screw becomes loose or is not tightened. [Brief explanation of the drawing]

[0010] [Figure 1] This is a front view showing a canvas attached to a detachable picture frame according to an embodiment of the present invention. [Figure 2] This is a rear view of Figure 1. [Figure 3] This is a plan view of Figure 1. [Figure 4] This is a left side view of Figure 1. [Figure 5] This is a cross-sectional view along the line A-A' in Figure 1. [Figure 6] This is a longitudinal cross-section along the line B-B' in Figure 1. [Figure 7] This is an enlarged cross-sectional view of the main parts showing the upper mounting section and the surrounding area of ​​the fixing structure in Figure 6. [Figure 8] Figure 6 is an enlarged cross-sectional view of the main parts showing the lower hand-tightened screw and the area around the base block. [Figure 9] This is a front view showing the back panel unit alone, with the frame and canvas removed. [Figure 10] It is an overall perspective view showing the structure of the canvas alone. [Figure 11] It is a rear perspective view showing the structure of the canvas alone. [Figure 12] It is an overall perspective view showing the structure of the backplate unit alone. [Figure 13] It is a rear perspective view showing the structure of the backplate unit alone. (3) [Figure 14] It is a perspective view showing the state of looking up at the backplate unit from below on the front side. [Figure 15] It is an enlarged partial perspective view showing the details of the fixing structure in the portion surrounded by the broken line in FIG. 14. [Figure 16] It is an overall perspective view showing the structure of the frame alone. [Figure 17] It is a rear perspective view showing the structure of the frame alone. [Figure 18] It is an overall perspective view showing the state where the canvas is attached to the backplate unit. [Figure 19] It is the rear perspective view of FIG. 18. [Figure 20] It is an overall perspective view showing the assembled display state of the entire detachable frame of the present invention. [Figure 21] It is the rear perspective view of FIG. 20.

Mode for Carrying Out the Invention

[0011] Hereinafter, the detachable frame according to the embodiment of the present invention will be described in detail with reference to the drawings. The detachable frame of the present invention can firmly fix a commercially available canvas (4) on which an oil painting or the like is drawn manually without using any tools, and has a visual effect (floating effect) such that the canvas (4) appears to float in the air when viewed from the front side.

[0012] As shown in Figures 1 to 6, and Figures 20 and 21, the detachable picture frame of the present invention mainly comprises a frame (1) as an outer frame located on the front side, and a back panel unit (2) that is detachably fitted to the back side (rear side) of the frame (1). A rotating fastener (so-called dragonfly) is provided on the back side of the frame (1), and the back panel unit (2) can be easily fixed and detached manually by snapping it into place from the back side of the frame (1) (see Figures 16 and 17).

[0013] As shown in detail in Figures 9 and 12 to 15, the back panel unit (2) integrally comprises a rectangular flat back panel base (21) and a convex-shaped base block (22) fixed to the center of the front side (the side facing the canvas) of the back panel base (21).

[0014] As shown in Figures 7 and 12, a flat, stepped "upper mounting portion (22a)" that protrudes forward is formed at the upper end of the base block (22). A non-slip sheet (23) is attached to the outer surface (top surface) of this upper mounting portion (22a)** to prevent lateral movement and wobbling when the upper edge of the wooden frame (41) of the canvas (4) is placed on it.

[0015] On the other hand, as shown in Figures 8, 13, and 15, a through-hole is formed at the lower end of the base block (22), and a metal threaded insert (22c) is embedded in the inner wall of the threaded insert (22c). A manually rotatable hand screw (3) is screwed into this threaded insert (22c) from top to bottom.

[0016] Next, the protective structure for the canvas (4) in the detachable picture frame of the present invention, and the mechanism of the floating effect will be described in detail. As shown in Figures 7, 8, and 9, long, plate-shaped "float spacers (5)" are arranged side by side on the front side of the back plate base (21), adjacent to the base block (22) and below the hand-tightened screw 3, respectively.

[0017] As clearly shown in Figures 7 and 8, the float spacer (5) is designed to be interposed between the backing board base (21) and the canvas frame (41). This prevents the back surface of the canvas (4) itself (the part of the canvas cloth (42) directly behind the painted surface) that is exposed inside the canvas frame (41) from directly rubbing against or being compressed against the backing block (22) or backing board base (21) when the canvas (4) is mounted. Therefore, wear and damage to the canvas cloth (42) due to vibrations during transport can be reliably avoided, and the back surface can be prevented from being pushed up by the backing block (22), maintaining the smoothness of the canvas (4) surface and completely preventing problems such as the flat surface becoming raised. Furthermore, the float spacer (5) is sized to be completely hidden behind the canvas (4) when the frame (1) is viewed from the front, so it is not visible to the viewer at all, and it forms a gap (float space) that makes the canvas (4) appear to float beautifully within the frame. In other words, without showing any fixing structure to the viewer, it creates a sense of floating not only through the gaps in the horizontal left-right direction (X-axis direction) and vertical up-down direction (Y-axis direction) when facing the canvas (4) directly, but also in the depth front-back direction (Z-axis direction) where it protrudes from the backboard base (21) to the front, creating a state in which the canvas (4) appears to float completely independently. As a result, the "effect of the canvas appearing to float beautifully in space in all three dimensions of X, Y, and Z," which was extremely difficult with conventional fixing structures such as adhesives, double-sided tape, or direct screw fastening to the backboard, is achieved with an extremely simple structure.

[0018] Next, we will explain the specific usage method and structure of the "one-shot positioning (center alignment) system," which is a highly distinctive feature of this invention. As shown in Figures 9, 14, and 15, a long, narrow "slit-shaped groove" is formed at the center of the float spacer (5) in the width direction (left-right direction), serving as a "back plate side center mark (51)" which acts as a reference line for alignment.

[0019] When setting the canvas (4) in this frame, the user (purchaser) measures the position of the center of the short side (center in the width direction) of their canvas (4) using a ruler or similar tool, as shown in Figures 10 and 11, and marks (writes) the "canvas-side center mark (43)" themselves using a pencil or pen.

[0020] Then, during the framing process, as shown in Figures 18 and 19, when setting the canvas (4) onto the backing unit (2), the user visually aligns the canvas-side center mark (43) that they have marked themselves with the backing-side center mark (slit-shaped groove) (51) that is pre-etched on the float spacer (5). In this state, by tightening the hand-tightened screw (3) to tension and fix it in the vertical direction, anyone can instantly and perfectly center the left-right position of the canvas (4) within the frame (1) without using any measuring instruments such as rulers on site. [Explanation of symbols]

[0021] 1 frame 2 Back panel unit 21 Back panel base 22 Base Blocks 22a Upper mounting section 22c threaded insert nut 23 Anti-slip sheet 3. Hand-tightened screws 4 Canvas 41 Wooden frame 42 Canvas cloth 43 Center mark on the canvas side 5. Float Spacer 51 Center mark on the back panel

Claims

1. The frame (1) has an opening on the front side and a notched groove (11) and a fastener (12) on the back side, and the back panel unit (2) is detachably held from the back side of the frame (1) via the notched groove (11) and the fastener (12), wherein the back panel unit (2) includes a back panel base (21) which serves as a background panel, a base block (22) fixed to the front side of the back panel base (21) and having an upper mounting portion (22a) that engages with the upper edge of the canvas wooden frame (41) of the canvas (4) to be attached, a through hole (22b) formed on the lower side of the base block (22) that penetrates the base block (22) in the vertical direction, and a filling inside the through hole (22b) A detachable picture frame comprising a metal threaded insert (22c), a hand-operated screw (3) screwed into the threaded insert (22c) from above and downward, with a head that can be manually rotated, and an anti-slip member (23) disposed on the upper surface of the upper mounting portion (22a) of the base block (22), wherein by extending and rotating the hand-operated screw (3) downward, the lower edge of the canvas frame (41) is pushed downward with the tip of the hand-operated screw (3), and the upper edge of the canvas frame (41) is pressed against the upper surface of the upper mounting portion (22a) via the anti-slip member (23), thereby bracing and fixing the canvas frame (41) to the base block (22) from the inside.

2. The detachable picture frame according to claim 1, characterized in that, on the front side of the back panel base (21), float spacers (5) are arranged side by side adjacent to both vertical ends of the base block (22), the float spacers (5) are designed to be interposed between the back panel base (21) and the canvas frame (41) to avoid contact between the base block (22) and the canvas cloth (42), and to form a gap that holds the canvas (4) suspended in a state that is not visible from the front side of the frame (1), and at least one fixing screw for fixing the canvas frame (41) is provided on the back panel base (21).

3. A detachable picture frame according to claim 1 or 2, comprising a canvas-side center mark (43) placed at the center of the short side of the canvas (4) and a backboard-side center mark (51) formed at the center in the width direction of the float spacer (5), wherein the canvas-side center mark (43) and the backboard-side center mark (51) can be visually aligned to position the canvas (4) in the left-right direction within the frame (1) to the center.

Images