An oil painting frame with a convenient picture changing function
By introducing limiting components and magnetic adsorption structures into the oil painting frame, the problem of loosening and shifting of paintings during transportation and exhibition has been solved, achieving stable fixation and protection of the paintings, and improving ease of use and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-29
- Publication Date
- 2026-07-14
AI Technical Summary
Existing oil painting frames lack effective locking and securing functions during transportation or exhibition, causing the paintings to easily loosen and shift, affecting the display effect and potentially causing damage.
The system employs a limiting component, including a motion groove, rotating rod, torsion spring, rotating plate, and protrusions within the pull-out base. The rotating plate rotates by the contact between the auxiliary block and the protrusions, and the combination of magnetic adsorption and elastic structure ensures stable fixation of the picture.
It enables convenient fixation and protection of paintings, improves stability during transportation and exhibition, prevents paintings from shifting or shaking, and protects the integrity of oil paintings.
Smart Images

Figure CN224483552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil painting frame technology, and in particular to an oil painting frame that facilitates the replacement of paintings. Background Technology
[0002] Oil painting frames are the border structures used to mount and protect oil paintings. They are usually made of wood (such as pine, cedar, etc.), synthetic materials, or metal. The outer layer is covered with backing paper, linen, or cardboard to smooth the edges of the canvas, and the painting is fixed by a backing board. They come in a variety of styles (classical carving, minimalist modern, etc.), and their size and thickness must match the needs of the painting. They can enhance the display effect of the artwork, and also protect it from moisture and damage. They are a key accessory for the preservation and decoration of oil paintings.
[0003] However, the most common oil painting frames on the market usually use a direct plug-in method, where the painting is inserted into the frame. In actual use, when the installation needs to be transported or exhibited, the existing installation often lacks an effective limiting and fixing function, which makes the painting easy to loosen and shift. This not only affects the final display effect, but also damages the oil painting. Summary of the Invention
[0004] In view of the problem that the above-mentioned or existing technologies cannot conveniently fix the picture, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide an oil painting frame that facilitates the replacement of paintings, including a frame body, a pull-out seat that slides inside the frame body, and a limiting component disposed inside the pull-out seat. The limiting component includes a motion groove opened inside the pull-out seat, a rotating rod disposed inside the motion groove, torsion springs disposed at both ends of the outer wall of the rotating rod, a torsion spring and a rotating plate disposed outside the rotating rod, a protrusion disposed on the top of the rotating plate, and an auxiliary block disposed inside the frame body.
[0006] The auxiliary blocks are located on both sides of the inside of the frame. Through the mutual contact between the auxiliary blocks and the protrusions, the protrusions drive the rotating plate to rotate around the axis of the rotating rod.
[0007] As a preferred embodiment of the present invention, which provides a convenient way to change paintings, the limiting component further includes a spring groove, into which a spring is inserted.
[0008] As a preferred embodiment of this utility model for a convenient oil painting frame with interchangeable paintings, the spring has a lifting rod at its top end, a connecting rod is movably mounted at its top end via a pivot, and the top end of the connecting rod is movably fixed to the outer wall of the rotating plate.
[0009] As a preferred embodiment of the present invention for a convenient oil painting frame for changing paintings, wherein: a positioning component is provided on one side of the rotating plate, the positioning component includes a slide, a compression spring is inserted into the slide, and a slider is provided at the top of the compression spring.
[0010] As a preferred embodiment of this utility model for a convenient oil painting frame with interchangeable paintings, the top of the slider is fixed to the bottom outer wall of the rotating plate, and a connecting rod is provided at the bottom of the slide block.
[0011] As a preferred embodiment of this utility model for a convenient oil painting frame with interchangeable paintings, wherein: a pressure plate is movably mounted on the outside of the connecting rod via a bearing, and a magnetic pad is provided at the bottom of the pressure plate.
[0012] As a preferred embodiment of the present invention for a convenient oil painting frame with interchangeable paintings, the positioning component further includes a mounting groove, which is provided on both sides of the pull-out base, and a magnetic strip is provided inside the mounting groove.
[0013] As a preferred embodiment of this utility model for a convenient oil painting frame with interchangeable paintings, wherein: an adsorption block is provided on the side of the pull-out base adjacent to the frame, and the adsorption blocks are magnetically connected to each other.
[0014] The beneficial effects of this utility model are as follows: Through the limiting component, the limiting component can utilize the contact between the protrusion and the auxiliary block to enable the rotating plate to drive the positioning component to limit and fix the picture. This structure makes it more convenient to fix or remove the picture. Furthermore, through the magnetic adsorption between the magnetic strip and the magnetic pad of the positioning component, the pressure plate can vertically limit the picture, which can effectively fix the picture and protect it. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of an oil painting frame that allows for easy replacement of paintings.
[0017] Figure 2 This is a schematic diagram of an auxiliary block structure for an oil painting frame that facilitates the replacement of paintings.
[0018] Figure 3 This is a schematic diagram of a limiting component structure for an oil painting frame that facilitates the replacement of paintings.
[0019] Figure 4 This is a schematic diagram of the magnetic strip structure of an oil painting frame that facilitates the replacement of paintings.
[0020] In the diagram: 1. Frame; 2. Pull-out seat; 3. Limiting component; 31. Motion groove; 32. Rotating rod; 33. Torsion spring; 34. Rotating plate; 35. Protrusion; 36. Spring groove; 37. Spring; 38. Lifting rod; 39. Connecting rod; 310. Auxiliary block; 4. Positioning component; 41. Slide seat; 42. Compression spring; 43. Slider; 44. Connecting rod; 45. Pressure plate; 46. Mounting groove; 47. Magnetic strip; 48. Adsorption block. Detailed Implementation
[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0024] Example 1, referring to Figure 1 , Figure 2 and Figure 3This is the first embodiment of the present invention, which provides an oil painting frame for easy replacement of paintings. It includes a frame 1, a pull-out seat 2 sliding inside the frame 1, and a limiting component 3 disposed inside the pull-out seat 2. The limiting component 3 includes a motion groove 31 formed inside the pull-out seat 2, a rotating rod 32 disposed inside the motion groove 31, torsion springs 33 disposed at both ends of the outer wall of the rotating rod 32, the torsion springs 33 being sleeved on both ends of the outer wall of the rotating rod 32, a rotating plate 34 disposed outside the rotating rod 32, a protrusion 35 disposed on the top of the rotating plate 34, and an auxiliary block 310 disposed inside the frame 1. The auxiliary block 310 can be used in conjunction with... The matching of the protrusion 35 allows the user to automatically fix the picture during insertion. The auxiliary block 310 is set on both sides of the inside of the frame 1. Through the mutual contact between the auxiliary block 310 and the protrusion 35, the protrusion 35 drives the rotating plate 34 to rotate around the axis of the rotating rod 32. When the pull-out seat 2 moves inside the frame 1, the pull-out seat 2 can drive the protrusion 35 to move. With the cooperation between the protrusion 35 and the auxiliary block 310, the auxiliary block 310 can effectively limit and fix the picture. In this way, the device can greatly improve the efficiency of fixing or removing the picture without affecting the fixing effect.
[0025] Specifically, the limiting component 3 also includes a spring groove 36, and a spring 37 is inserted into the inside of the spring groove 36. The spring 37 is inserted into the inside of the spring groove 36, so that when the spring 37 is squeezed, the spring 37 will move inside the spring groove 36.
[0026] Furthermore, a lifting rod 38 is provided at the top of the spring 37, and a connecting rod 39 is movably installed at the top of the lifting rod 38 via a pivot. The top of the connecting rod 39 is movably fixed on the outer wall of the rotating plate 34. The spring 37 can use the force of the spring to drive the lifting rod 38 to move, and the lifting rod 38 can drive the rotating plate 34 to move through the action of the connecting rod 39.
[0027] In use, when the user smoothly inserts the pull-out seat 2 along the inner track of the frame 1, the pull-out seat 2 will cause the limiting component 3 inside it to move. The limiting component 3 can cause the protrusion 35 to fit against the auxiliary block 310. When the protrusion 35 moves, the protrusion 35 will cause the rotating plate 34 rigidly connected to it to rotate clockwise around the axis of the rotating rod 32. When the rotating plate 34 moves, the rotating rod 32 fixed at its end will simultaneously complete the rotation action in the motion groove 31 opened in the inner wall of the frame 1. The arc contour of the motion groove 31 strictly matches the rotation trajectory of the rotating rod 32, which not only provides stable support for the rotating rod 32, but also prevents the rotating rod 32 from radially deviating through the limiting effect of the groove wall. During this process, the torsion springs 33 sleeved on both ends of the rotating rod 32 will undergo torsional deformation due to the rotation of the rotating plate 34, storing energy for the subsequent reset action. At the same time, the rotational motion of the rotating plate 34 is converted into the oblique pressing action of the connecting rod 39. The lifting rod 38 connected to the end moves downward in the vertical direction. The lower end of the lifting rod 38 is set at the top of the spring 37. When the lifting rod 38 moves down, it will axially compress the spring 37 supported at the bottom of the spring groove 36. The spring 37 undergoes compression deformation under the constraint of the groove. The reaction force generated is transmitted to the rotating plate 34 through the lifting rod 38. Together with the torsion of the torsion spring 33, it forms a balance system to ensure that the movement of the rotating plate 34 is stable and controllable. As the rotation angle of the rotating plate 34 gradually increases, the positioning component 4 on the side closer to the picture simultaneously completes the position switch. The elastic pressure head in the positioning component 4 gradually approaches the surface of the picture from the initial separated state under the drive of the rotating plate 34. When the pull-out seat 2 is inserted into place, the positioning component 4 is exactly in the preset limit position. The positioning component 4 will fit tightly against the picture. Through the dual action of friction and mechanical limit, the picture is stably positioned, effectively preventing the picture from shifting or shaking during the pull-out process.
[0028] In summary, the limiting component 3, through the tight fit between the auxiliary block 310 and the protrusion 35, provides a stable angular rotation basis for the rotating plate 34, enabling it to flexibly achieve a predetermined angle of rotation. During the rotation of the rotating plate 34, the torsion spring 33 is simultaneously deformed. The elastic potential energy generated by this deformation becomes an important power source for the resetting of the rotating plate 34. At the same time, the rotational motion of the rotating plate 34 effectively drives the positioning component 4, allowing it to accurately limit and fix the image, ensuring that the image remains within the device. In a stable state, during the movement of the rotating plate 34, the connecting rod 39, the lifting rod 38, and the spring 37 work together. The connecting rod 39 transmits the power of the rotating plate 34 to the lifting rod 38, and the displacement of the lifting rod 38 causes the spring 37 to undergo elastic deformation. This multi-elastic structure design significantly enhances the recovery performance and movement stability of the rotating plate 34. Through the interaction of the above structures, when installing or removing the pull-out seat 2, the device can quickly drive the positioning component 4 to complete the fixing or releasing operation of the picture, greatly improving the convenience and efficiency of the picture loading and unloading process.
[0029] Example 2, refer to Figures 2 to 4 This is the second embodiment of the present invention. Unlike the previous embodiment, it solves the problem of improving the fixation effect of the picture.
[0030] Specifically, a positioning component 4 is provided on one side of the rotating plate 34. The positioning component 4 includes a slide 41. A compression spring 42 is inserted into the slide 41. A slider 43 is provided at the top of the compression spring 42. The top of the slider 43 is fixed to one side of the bottom outer wall of the rotating plate 34.
[0031] The top of the slider 43 is fixed to the bottom outer wall of the rotating plate 34. The bottom of the slide block 41 is provided with a connecting rod 44. When the slider 43 moves, the slider 43 can slide inside the slide block 41. When the slider 43 moves, the slider 43 will compress the compression spring 42, so that the device can effectively limit the movement when facing pictures of different thicknesses.
[0032] The connecting rod 44 is movably mounted with a pressure plate 45 via a bearing. A magnetic pad is provided at the bottom of the pressure plate 45. When the slide 42 moves, the slide 42 can drive the pressure plate 45 and the magnetic pad to move, thereby effectively limiting the material.
[0033] Preferably, the positioning component 4 also includes a mounting groove 46, which is provided on both sides of the pull-out base 2. A magnetic strip 47 is provided inside the mounting groove 46. The magnetic strip 47 inside the mounting groove 46 can use the magnetic force to connect with the magnetic pad, thereby improving the fixing effect of the picture. The magnetic force between the magnetic strip 47 and the magnetic pad is greater than the elastic force of the compression spring 42, but less than the spring 37 and the torsion spring 33.
[0034] Preferably, an adsorption block 48 is provided on the side adjacent to the pull-out base 2 and the frame 1. The adsorption blocks 48 are magnetically connected, and the magnetic connection between the adsorption blocks 48 can play a fixing function. When the device is placed and used normally, it is necessary to ensure that the pull-out base 2 is placed in a vertically upward position to ensure the best working state of the picture placement, so that the pull-out base 2 will not fall off because its weight is greater than the magnetic force between the adsorption blocks 48.
[0035] The rest of the structure is the same as in Example 1.
[0036] In use, when the rotating plate 34 rotates around the rotation axis of the rotating rod 32, the slider 43 will drive the slide 41 to move synchronously. During its movement, the slide 41 will drive the compression spring 42 and the connecting rod 44 to move synchronously. During its movement, the connecting rod 44 will drive the pressure plate 45 to move. When the pressure plate 45 moves to a specified angle, the magnetic strip 47 uses the magnetic connection with the magnetic pad to keep the bottom surface of the pressure plate 45 always moving horizontally with the magnetic strip 47, thereby effectively fixing the picture. The magnetic pad at the bottom of the pressure plate 45 contacts the magnetic strip 47. During the continuous movement of the rotating plate 34, the rotating plate 43 will apply pressure to the slider 43, and the slider 43 will squeeze the compression spring 42 to ensure the limiting function of pictures of different thicknesses.
[0037] In summary, by using the positioning component 4, which utilizes the magnetic connection between the magnetic strip 47 and the magnetic pad, the device can effectively improve the picture fixing function. When the picture is fixed, the pressure plate 45 can move downward horizontally relative to the magnetic strip 47, thus protecting and fixing the picture. Furthermore, through the action of the compression spring 42 and the slider 43, the device can limit the movement of pictures of different thicknesses.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A convenient oil painting frame for changing paintings, characterized in that: include, A frame (1), a pull-out seat (2) that slides inside the frame (1); and, A limiting component (3) is provided inside the pull-out seat (2); and, The limiting component (3) includes a motion groove (31) opened inside the pull-out seat (2), a rotating rod (32) disposed inside the motion groove (31), torsion springs (33) disposed at both ends of the outer wall of the rotating rod (32), a torsion spring (33) and a rotating plate (34) disposed outside the rotating rod (32), a protrusion (35) disposed on the top of the rotating plate (34), and an auxiliary block (310) disposed inside the frame (1); wherein, The auxiliary block (310) is located on both sides inside the frame (1). Through the mutual contact between the auxiliary block (310) and the protrusion (35), the protrusion (35) drives the rotating plate (34) to rotate around the axis of the rotating rod (32).
2. The oil painting frame for easy replacement of paintings as described in claim 1, characterized in that: The limiting component (3) also includes a spring groove (36), into which a spring (37) is inserted.
3. The oil painting frame for easy replacement of paintings as described in claim 2, characterized in that: The top of the spring (37) is provided with a lifting rod (38), and the top of the lifting rod (38) is movably mounted with a connecting rod (39) through a rotating shaft. The top of the connecting rod (39) is movably fixed on the outer wall of the rotating plate (34).
4. The oil painting frame for easy replacement of paintings as described in claim 1, characterized in that: A positioning component (4) is provided on one side of the rotating plate (34). The positioning component (4) includes a slide (41). A compression spring (42) is inserted inside the slide (41). A slider (43) is provided at the top of the compression spring (42).
5. The oil painting frame for easy replacement of paintings as described in claim 4, characterized in that: The top of the slider (43) is fixed on the bottom outer wall of the rotating plate (34), and the bottom of the slide block (41) is provided with a connecting rod (44).
6. The oil painting frame as described in claim 5, characterized in that: A pressure plate (45) is movably mounted on the outside of the connecting rod (44) via a bearing, and a magnetic pad is provided at the bottom of the pressure plate (45).
7. The oil painting frame for easy replacement of paintings as described in claim 4, characterized in that: The positioning component (4) also includes a mounting groove (46), which is located on both sides of the pull-out seat (2), and a magnetic strip (47) is provided inside the mounting groove (46).
8. The oil painting frame for easy replacement of paintings as described in claim 1, characterized in that: An adsorption block (48) is provided on one side adjacent to the pull-out seat (2) and the frame (1), and the adsorption blocks (48) are magnetically connected to each other.