A type of interlocking picture frame

Abstract

This invention discloses a splicing picture frame, comprising a closed outer frame formed by splicing several frame profiles together at their ends, with the end connections of adjacent frame profiles forming frame corners; a push rod that slides against the inner sidewalls of adjacent frame profiles at both ends, the push rod and the frame profiles at their ends forming a triangular connection, the push rod having a through hole; and a frame corner clip installed at the frame corner, the frame corner clip including an upper patch and an inner folded patch that are folded at an angle to each other, the upper patch being installed on the upper end face of the frame profile, the inner folded patch being folded inward to the inside of the outer frame, the inner folded patch having a positioning hole; and a positioning rod that passes through the through hole and the positioning hole in sequence, the positioning rod having a fastening structure for limiting the relative position of the push rod and the frame corner clip. This invention is simple to install, the connection structure between adjacent frame profiles is extremely stable, and it will not deform after long-term use, ensuring the flatness of the subsequent canvas installation and effectively improving product quality.

Description

Technical Field

[0001] This invention relates to the field of decorative painting technology, and in particular to a splicing picture frame. Background Technology

[0002] Decorative paintings are works of art that combine decorative function with aesthetic appreciation. With the advancement of science and technology, the mediums and forms of expression for decorative paintings have become increasingly diverse, greatly enhancing people's pursuit and love for a quality life. For interior wall decorations, frames are often designed to complement high-end oil paintings and original works. These frames come in various styles, appearing magnificent and luxurious, and are generally more expensive. The frames primarily serve to position the four sides of the artwork, enhance its aesthetics, and prevent damage such as yellowing caused by prolonged exposure to air.

[0003] For framed paintings, they are basically pre-assembled finished products. These finished decorative paintings take up a lot of space, significantly increasing logistics costs and warehouse storage space. Furthermore, if not properly packaged, the edges and corners are easily damaged. Especially for larger paintings, the assembled finished products may be difficult to move indoors due to their greater length and width. Therefore, some decorative paintings with detachable frames have appeared on the market. However, detachable decorative paintings on the market have the following drawbacks:

[0004] 1. After being assembled, the connection structure between adjacent frame profiles is unstable. They are only connected by simple clips or kits. After being displayed for a long time, they are prone to deformation. In severe cases, they may even cause the structure to fall apart, posing a safety hazard.

[0005] 2. During installation, the approximate placement of the frame profiles cannot be determined. Improper operation can easily damage the connecting components and cause the edges of the assembled product to not be flush and not fit the canvas.

[0006] 3. If the frame structure deforms or falls apart, the canvas may not be able to be installed, or may not be installed evenly, or may even be damaged, causing great losses. Summary of the Invention

[0007] To address the aforementioned problems, this invention proposes a splicing picture frame.

[0008] The technical solution adopted in this invention is: a splicing picture frame, wherein the splicing picture frame comprises:

[0009] The outer frame is closed and is composed of several frame profiles spliced ​​together at the ends. The end connections of adjacent frame profiles form the frame corners.

[0010] The push rod has two ends that slide against the inner sidewalls of adjacent frame profiles, and the push rod and the two frame profiles that abut against the push rod together form a triangular connection. The push rod is provided with a through hole.

[0011] The frame corner clip is installed on the frame corner and includes an upper patch and an inner folded patch that are folded at an angle to each other. The upper patch is fixedly installed on the upper end surface of the frame profile, and the inner folded patch extends inward to the inside of the outer frame and is provided with positioning holes.

[0012] The positioning rod passes through the through hole and the positioning hole in sequence, and the positioning rod is provided with a fastening structure for limiting the relative position of the push rod and the frame corner clip.

[0013] It should be noted that if there are four frame profiles, the outer frame will be rectangular; if there are three frame profiles, the outer frame will be triangular. Furthermore, frame profiles of different or the same length can be designed to suit the subsequent canvas installation.

[0014] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0015] Preferably, the ends of adjacent frame profiles are joined together at an angle, and the upper patch is horizontally connected between adjacent frame profiles.

[0016] Preferably, the upper patch has downwardly folded feet at both ends, and the upper end face of the frame profile has snap-fit ​​holes on both sides along the longitudinal direction for inserting the feet.

[0017] The corner bracket design offers two advantages. First, it allows for preliminary positioning of the relative positions of adjacent frame profiles during installation. Since these profiles are joined at an angle, the angles can be brought together to roughly determine their relative positions before installing the corner bracket. The upper patch will then be placed horizontally on the upper side of the angled joint and connected to the two adjacent frame profiles via two feet, thus providing initial fixation. Furthermore, the corner bracket is typically made of metal, offering strong resistance to deformation and effectively reducing subsequent positional shifts in the adjacent frame profiles. Second, it allows for coordinated installation with the push rod and positioning rod during the subsequent fixing process. The assembly forms a stable triangular structure. Once installed, the push rod and the two frame profiles abutting against the push rod together form a triangular connection. The fastening structure is used to secure and maintain this triangular connection, making the structure extremely stable. When the position of the corner clip changes (equivalent to the structure between adjacent frame profiles becoming loose), the positioning rod will provide a lateral force to prevent the corner clip from loosening. If deformation is required, the connection between the positioning rod and the push rod needs to be bent, or the positioning hole needs to be deformed to change the relative position of the connection between the positioning hole and the positioning rod. Undoubtedly, this requires overcoming enormous forces. This means that through the above structure, once the spliced ​​picture frame in this technical solution is assembled, the position of the corner clip will not change, nor will the relative position of the frame profiles, resulting in an extremely stable structure.

[0018] In addition, for the convenience of installing the corner clips, the inner flaps are usually connected to the two ends of the upper patch in an arc shape to form an arc corner.

[0019] Preferably, the inner wall of the frame profile is provided with a slide bar extending along its own length, and the two ends of the push rod are beveled and provided with a sliding groove for the slide bar to slide into.

[0020] Here, the slider defines the upper and lower placement positions of the two ends of the push rod on the inner side wall of the frame profile. In addition, the design of the positioning rod and the corner clip can effectively prevent the relative position of the push rod from changing. It is equivalent to the adjacent frame profiles, corner clips, positioning rods and push rods being linked together. After the relative positions of each structure are fastened by the fastening structure, the final structure will be extremely stable.

[0021] Preferably, the picture frame has an open state, in which the inclined surfaces at both ends of the push rod tightly abut against the inner sidewall of the frame profile.

[0022] Preferably, the through hole is disposed at the middle position of the side of the push rod, and the push rod and the positioning rod are perpendicular to each other. It should be noted that the through hole is only located at the middle position of the side of the push rod when the outer frame outline is a regular polygon. When the user selects frame profiles of various lengths, i.e., when the outer frame outline is not a regular polygon, the push rod still needs to remain perpendicular to the positioning rod, but the position of the through hole on the side of the push rod can be adjusted adaptively according to the actual situation.

[0023] Preferably, the positioning hole includes a clearance hole and a slot that are interconnected, wherein the diameter of the clearance hole is larger than the diameter of the slot, and as a further preferred embodiment, the slot is located below the clearance hole.

[0024] Preferably, the slot is a strip-shaped opening, and in the open state, the positioning rod is engaged in the strip-shaped opening.

[0025] Preferably, the fastening structure includes a screw, a nut, and a limiting block, wherein the screw extends integrally along the length of the positioning rod, and in the open state, the nut is screwed onto the screw and abuts against the push rod, the limiting block is disposed at the end of the positioning rod away from the screw, and the inner diameter of the limiting block is controlled between the diameter of the clearance hole and the diameter of the slot.

[0026] During installation, first insert the end of the positioning rod with the limit block into the clearance hole, then move the positioning rod down so that it engages with the slot. The limit block acts as an anti-disengagement limit for the positioning rod. For ease of installation, a swivel nut is generally preferred. Rotate the swivel nut until it abuts against the push rod to achieve a tight fit.

[0027] More preferably, the lower end face of the frame profile has at least one screw hole on each of its two longitudinal sides. In the open state, connecting corner brackets are installed on the lower end face of the frame corners through the screw holes. The connecting corner brackets have multiple small holes for screws to pass through, and these small holes correspond to the screw holes. The design of the connecting corner brackets here is to further restrict the relative position of adjacent frame profiles, which can make the structure more stable.

[0028] The installation process of this technical solution is briefly described below:

[0029] First, the two frame profiles are initially spliced ​​together using the beveled ends. Then, the two feet on the corner clips are respectively engaged with the engagement holes on the two frame profiles to initially fix their relative positions (note that after the corner clips are installed, do not pull the frame profiles outwards, otherwise the structure of the corner clips may be damaged). At this time, the upper patch of the corner clip is attached to the upper end face of the corner, and the inner fold is folded inwards into the inside of the corner. Then, the limiting block is inserted into the clearance hole on the inner fold, so that the positioning rod connected to one end of the limiting block also passes through the clearance hole. When the support is lost, it will fall into the slot. Then, slide the groove at one end of the push rod along the slide bar on one of the frame profiles, until the groove at the other end of the push rod also slides onto the slide bar of the other frame profile. Note that before the groove at the other end of the push rod slides onto the slide bar of the other frame profile, the position of the positioning rod in the slot needs to be determined so that the screw at the other end of the positioning rod can pass through the through hole. Finally, by tightening the nut, the relative positions of the two frame profiles, the push rod, the positioning rod, and the frame corner clips are secured. Similarly, continue installing the remaining frame profiles to complete the overall installation of the decorative frame.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. Utilizing the principle of triangle stability, the connection structure between adjacent frame profiles is extremely stable and will not deform even after long-term use, ensuring the flatness of subsequent canvas installation and effectively improving product quality.

[0032] 2. Due to the high tensile strength of the corner clips, they can be used for initial positioning between adjacent frame profiles without deformation, which can effectively reduce the difficulty of installation and ensure the smoothness of the edge connection of the final installed product.

[0033] 3. Installation is simple; just follow the steps to easily complete the installation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a front axonometric structural diagram of the assembled picture frame in this invention;

[0036] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0037] Figure 3 This is a rear axonometric structural diagram of the assembled picture frame in this invention;

[0038] Figure 4 for Figure 2 Enlarged view of part B in the image;

[0039] Figure 5 This is a front view of the assembled picture frame in this invention;

[0040] Figure 6 This is a front axonometric structural diagram of the individual frame profiles spliced ​​together in this invention;

[0041] Figure 7 for Figure 6 Enlarged view of part C in the image;

[0042] Figure 8 This is a rear axonometric structural diagram of the individual frame profiles spliced ​​together in this invention.

[0043] Figure 9 This is a first-view structural diagram showing the interconnected state of the corner bracket, positioning rod, and push rod in this invention.

[0044] Figure 10 This is a second-view structural diagram showing the interconnected state of the corner bracket, positioning rod, and push rod in this invention.

[0045] Figure 11 This is an isometric structural diagram of the corner bracket in this invention;

[0046] Figure 12 This is an axial view of the push rod in this invention;

[0047] Figure 13 This is a schematic diagram of the canvas plane involved in the present invention.

[0048] The attached diagram is labeled as follows: 1-Frame profile, 101-Snap-fit ​​hole, 102-Screw hole, 2-Push rod, 201-Through hole, 3-Frame corner clip, 301-Upper patch, 302-Inner fold, 3021-Lean hole, 3022-Slot opening, 3023-Arched corner, 303-Feet insert, 4-Positioning rod, 401-Screw, 402-Limiting block, 5-Horn nut, 6-Connecting corner bracket, 7-Screw, 8-Canvas, 801-Folded edge, 802-First fold, 803-Second fold, 9-Adhesive piece.

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0052] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0053] Detailed implementation plan: See below Figures 1-13 This invention is a modular picture frame, wherein the modular picture frame comprises:

[0054] The outer frame is closed and is formed by splicing several frame profiles 1 together at their ends. The end connection points of adjacent frame profiles 1 form the frame corners.

[0055] The push rod 2 has two ends that slide against the inner sidewalls of the adjacent frame profiles 1, and the push rod 2 and the two frame profiles 1 that abut against the push rod 2 together form a triangular connection. The push rod 2 is provided with a through hole 201.

[0056] The frame corner clip 3 is installed on the frame corner and includes an upper patch 301 and an inner fold 302 that are folded at an angle to each other. The upper patch 301 is fixedly installed on the upper end surface of the frame profile 1, and the inner fold 302 extends inward to the inside of the outer frame. The inner fold 302 is provided with a positioning hole.

[0057] The positioning rod 4 passes through the through hole 201 and the positioning hole in sequence, and the positioning rod 4 is provided with a fastening structure for limiting the relative position of the push rod 2 and the frame corner clip 3.

[0058] It should be noted that if there are four frame profiles 1, the outline of the outer frame will be rectangular; if there are three frame profiles 1, the outline of the outer frame will be triangular. Furthermore, frame profiles 1 of different or the same length can be designed according to requirements to suit the subsequent canvas installation.

[0059] Specifically, the ends of adjacent frame profiles 1 are joined together at an angle, and the upper patch 301 is horizontally connected between adjacent frame profiles 1.

[0060] In a preferred embodiment of this invention, the upper patch 301 has downwardly folded foot inserts 303 at both opposite ends, and the upper end face of the frame profile 1 has snap-fit ​​holes 101 on both sides along the longitudinal direction for inserting the foot inserts 303.

[0061] The design of the corner clip 3 has two advantages. First, during installation, the relative positions of adjacent frame profiles 1 can be roughly determined. Since adjacent frame profiles 1 are joined at an angle, the angles of the adjacent frame profiles 1 can be brought together first to roughly determine their relative positions. Then, the corner clip 3 is installed. At this point, the upper patch 301 will be horizontally attached to the upper side of the angled joint and connected to the two adjacent frame profiles 1 through two foot plugs 303, thus providing initial fixation for the two adjacent frame profiles 1. Furthermore, the corner clip 3 is generally made of metal, which has strong resistance to deformation and can effectively reduce the degree of positional change of adjacent frame profiles 1 during subsequent operations. Second, it can play a role in the subsequent installation and fixing process by creating an installation linkage with the push rod 2 and the positioning rod. To form a stable triangular structure, after installation, the push rod 2 and the two frame profiles 1 abutting against the push rod 2 together form a triangular connection. The fastening structure is used to fasten and maintain this triangular connection, which is extremely stable. When the position of the corner clip 3 changes (equivalent to the structure between adjacent frame profiles 1 becoming loose), the positioning rod 4 will provide a lateral force to the corner clip 3 to prevent loosening. If deformation is required, the connection between the positioning rod 4 and the push rod 2 needs to be bent, or the positioning hole needs to be deformed to change the relative position of the positioning hole and the connection between the positioning rod 4. Undoubtedly, this requires overcoming a huge force, which means that with the above structure, after the spliced ​​picture frame in this technical solution is assembled, the position of the corner clip 3 will not change, and the relative position of the frame profiles 1 will not change, so the structure will be extremely stable.

[0062] In addition, for the convenience of installing the corner clip 3, the inner flap 302 is generally connected to the two ends of the upper patch 301 in an arc transition, forming an arc corner 3023.

[0063] In addition, the inner sidewall of the frame profile 1 is provided with a slide bar extending along its own length, and the two ends of the push rod 2 are beveled and provided with a slide groove for the slide bar to slide into.

[0064] Here, the slider limits the upper and lower placement of the two ends of the push rod 2 on the inner side wall of the frame profile 1. In addition, the design of the positioning rod 4 and the corner clip 3 can also effectively prevent the relative position of the push rod 2 from changing. It is equivalent to the adjacent frame profile 1, corner clip 3, positioning rod 4 and push rod 2 being linked together. After the relative positions of each structure are fastened by the fastening structure, the final structure will be extremely stable.

[0065] Then, the picture frame is in an open state. In the open state, the inclined surfaces at both ends of the push rod 2 are tightly abutted against the inner sidewall of the frame profile 1.

[0066] In a preferred embodiment of this invention, the through hole 201 is disposed in the middle of the side of the push rod 2, and the push rod 2 and the positioning rod 4 are perpendicular to each other. It should be noted that the through hole 201 is disposed in the middle of the side of the push rod 2 only when the outer frame outline is a regular polygon. When the user selects various frame profiles 1 of different lengths, that is, when the outer frame outline is a non-regular polygon, the push rod 2 still needs to remain perpendicular to the positioning rod 4, but the position of the through hole 201 on the side of the push rod 2 can be adjusted adaptively according to the actual situation.

[0067] In this embodiment, the positioning hole includes a clearance hole 3021 and a slot opening 3022 that are interconnected. The diameter of the clearance hole 3021 is larger than the diameter of the slot opening 3022. In this embodiment, the slot opening 3022 is located below the clearance hole 3021.

[0068] Furthermore, the slot 3022 is a strip-shaped opening, and in the open state, the positioning rod 4 is engaged in the strip-shaped opening.

[0069] The fastening structure includes a screw 401, a nut, and a limiting block 402. The screw 401 extends integrally along the length of the positioning rod 4. In the open state, the nut is screwed onto the screw 401 and abuts against the push rod 2. The limiting block 402 is located at the end of the positioning rod 4 away from the screw 401, and the inner diameter of the limiting block 402 is controlled between the diameter of the clearance hole 3021 and the diameter of the slot 3022.

[0070] During installation, the end of the positioning rod 4 with the limiting block 402 can be inserted into the clearance hole 3021 first. Then, the positioning rod 4 is moved down so that it is engaged in the slot 3022. The limiting block 402 serves as an anti-disengagement limit for the positioning rod 4. For ease of installation, a screw nut 5 is generally preferred. Rotate the screw nut 5 until it abuts against the push rod 2 to achieve a tight fit.

[0071] More specifically, each side of the lower end face of the frame profile 1 along its length has at least one screw hole 102. In the extended state, connecting corner brackets 6 are installed on the lower end face of the frame corners through the screw holes 102. The connecting corner brackets 6 have multiple small holes for screws 7 to pass through, and these small holes correspond to the screw holes 102. The design of the connecting corner brackets 6 here is to further restrict the relative position of adjacent frame profiles 1, which can make the structure more stable.

[0072] In addition, in this embodiment, when a canvas needs to be installed on the splicing frame of the present invention to form a decorative painting, a canvas 8 with a folded edge 801 around the edge of the canvas body can be used. A first crease 802 is designed between the folded edge 801 and the canvas body to allow the folded edge 801 to be folded and attached to the outer wall of the frame profile 1. Here, double-sided adhesive tape or other adhesive strips 9 can be used for fixing. A second crease 803 is designed at the connection position of the folded edge 801 corresponding to the adjacent frame profile 1. The second crease 803 is used to assist the folded edge 801 in folding at the corner of the frame.

[0073] The installation process of this technical solution is briefly described below:

[0074] First, the two frame profiles 1 are initially spliced ​​together using the beveled ends. Then, the two feet 303 on the corner clip 3 are respectively clipped into the clipping holes 101 on the two frame profiles 1 to initially fix the relative positions of the two frame profiles 1 (note that after the corner clip 3 is installed, do not pull the frame profiles 1 outward, otherwise it is easy to damage the structure of the corner clip 3). At this time, the upper patch 301 of the corner clip 3 is attached to the upper end face of the corner, and the inner folding piece 302 is folded inward into the inside of the corner. Then, the limiting block 402 is inserted into the clearance hole 3021 on the inner folding piece 302, and the positioning rod 4 connected to one end of the limiting block 402 also passes through the clearance hole. When the positioning rod 4 loses its support, it will fall into the slot 3022. Then, the sliding groove at one end of the push rod 2 will slide along the slide bar on one of the frame profiles 1, eventually causing the sliding groove at the other end of the push rod 2 to slide onto the slide bar of the other frame profile 1. It is important to note that before the sliding groove at the other end of the push rod 2 slides onto the slide bar of the other frame profile 1, the position of the positioning rod 4 in the slot 3022 needs to be determined so that the screw 401 at the other end of the positioning rod 4 can pass through the through hole 201. Finally, by tightening the nut 5, the relative positions of the two frame profiles 1, the push rod 2, the positioning rod 4, and the frame corner clip 3 can be secured. Similarly, by continuing to install the remaining frame profiles 1, the overall installation of the decorative frame can be completed.

[0075] The splicing frame of the present invention described above is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A splicing picture frame, characterized in that, include: The outer frame is closed and is composed of several frame profiles spliced ​​together at the ends. The end connections of adjacent frame profiles form the frame corners. The push rod has two ends that slide against the inner sidewalls of adjacent frame profiles, and the push rod and the two frame profiles that abut against the push rod together form a triangular connection. The push rod is provided with a through hole. The frame corner clip is installed on the frame corner and includes an upper patch and an inner folded patch that are folded at an angle to each other. The upper patch is fixedly installed on the upper end surface of the frame profile, and the inner folded patch extends inward to the inside of the outer frame and is provided with positioning holes. A positioning rod passes through the through hole and the positioning hole in sequence, and the positioning rod is provided with a fastening structure for limiting the relative position of the push rod and the frame corner clip; The ends of adjacent frame profiles are joined together at an angle, and the upper patch is horizontally connected between adjacent frame profiles; The upper patch has downward-folding feet at both ends, and the upper end face of the frame profile has snap-fit ​​holes on both sides along the length for inserting the feet.

2. The splicing picture frame according to claim 1, characterized in that, The inner wall of the frame profile is provided with a slide bar extending along its own length, and the two ends of the push rod are beveled and provided with a slide groove for the slide bar to slide into.

3. A splicing picture frame according to claim 2, characterized in that, The picture frame has an open state, in which the inclined surfaces at both ends of the push rod tightly abut against the inner sidewall of the frame profile.

4. A splicing picture frame according to claim 1, characterized in that, The through hole is located at the middle position of the side of the push rod, and the push rod and the positioning rod are perpendicular to each other.

5. A splicing picture frame according to claim 3, characterized in that, The positioning hole includes a clearance hole and a slot that are interconnected, wherein the diameter of the clearance hole is larger than the diameter of the slot.

6. A splicing picture frame according to claim 5, characterized in that, The slot is a strip-shaped opening, and in the open state, the positioning rod is engaged in the strip-shaped opening.

7. A splicing picture frame according to any one of claims 5-6, characterized in that, The fastening structure includes a screw, a nut, and a limiting block. The screw extends integrally along the length of the positioning rod. In the open state, the nut is screwed onto the screw and abuts against the push rod. The limiting block is located at the end of the positioning rod away from the screw, and the inner diameter of the limiting block is controlled between the diameter of the clearance hole and the diameter of the slot.

8. A splicing picture frame according to claim 3, characterized in that, The lower end face of the frame profile is provided with at least one screw hole on each of the two sides along the longitudinal direction. In the open state, connecting corner brackets are installed on the lower end face of the frame corner through the screw holes.

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