A folding mechanism for a frame and a frame thereof

Abstract

This invention relates to the field of frame technology, and more particularly to a folding mechanism for a frame and a frame thereof. The folding mechanism includes two diagonally arranged outward folding mechanisms and two diagonally arranged inward folding mechanisms. The outward folding mechanism is used to stretch two adjacent frame units from a vertical state outward to a parallel state, and includes a first outward folding bracket, a second outward folding bracket, and a linkage mechanism connecting the first outward folding bracket and the second outward folding bracket. The inward folding mechanism is used to bend two adjacent frame units from a vertical state inward to a parallel state, and includes a female pivot component, a female pivot component, and a guide mechanism for guiding the relative movement of the female pivot component and the male pivot component. This invention utilizes the outward and inward folding mechanisms to enable the folding of a square frame. The folded frame is convenient for transportation, saving transportation costs. Furthermore, the folded frame can be unfolded and put into use immediately upon arrival at the exhibition site, saving installation time.

Description

Technical Field

[0001] This invention relates to the field of frame technology, and more particularly to a folding mechanism for a frame and the frame thereof. Background Technology

[0002] During exhibitions, frames are usually used to display various works. The frames are mostly square structures, which are formed by connecting the four edges end to end to form the square frame required for the exhibition. However, the connection methods used are generally bolt connections or glue connections, which are quite cumbersome to install and require a lot of manpower and time. In addition, the frames are generally reused, and the assembled frames are extremely inconvenient to transport. The disassembly process during transportation is also quite cumbersome, and they need to be reassembled when reused. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem that the connection method of the exhibition frame in the prior art is cumbersome to install and requires a lot of manpower and time, a folding mechanism is provided.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a folding mechanism for a frame, the frame being a square frame, comprising four end-to-end frame units, with the folding mechanism provided between each pair of adjacent frame units, the folding mechanism comprising two diagonally arranged outward folding mechanisms and two diagonally arranged inward folding mechanisms, that is, the outward folding mechanisms and the inward folding mechanisms are spaced apart along the circumference of the square frame.

[0005] The outward folding mechanism is used to stretch two adjacent frame units from a vertical state to a parallel state. Similarly, the two can also return from a parallel state to a vertical state. When the two are perpendicular to each other, it is an unfolded state, and when the two are parallel to each other, it is a folded state. The outward folding mechanism includes a first outward folding bracket fixed to one of the two adjacent frame units, a second outward folding bracket fixed to the other frame unit, and a linkage mechanism connecting the first outward folding bracket and the second outward folding bracket. The first outward folding bracket and the second outward folding bracket drive the two adjacent frame units to generate relative movement through the linkage mechanism, so that the two frame units connected to it are in an unfolded or folded state.

[0006] The inward folding mechanism is used to bend two adjacent frame units from a vertical state inward to a parallel state. Similarly, the two can also return from a parallel state to a vertical state. It includes a female pivot fixed to one of the two adjacent frame units, a male pivot fixed to the other frame unit, and a guide mechanism for guiding the relative movement of the female and male pivot units. The female and male pivot units rotate along the guide mechanism so that the two frame units connected to them are in an unfolded or folded state.

[0007] The above technical solution utilizes outward and inward folding mechanisms to enable the square frame to be folded. The folded frame is convenient for transportation, saving transportation costs. Moreover, once the folded frame arrives at the exhibition site, it can be unfolded and put into use, saving installation time.

[0008] Furthermore, the linkage mechanism includes a first link, a second link, a third link, and a fourth link. One end of the first link is hinged to a first outward folding bracket, and the other end is hinged to one end of the second link. The other end of the second link is hinged to a second outward folding bracket, and the middle part of the second link is hinged to one end of the third link. The other end of the third link is hinged to the first outward folding bracket, and the middle part of the third link is hinged to the fourth link. The other end of the fourth link is hinged to the second outward folding bracket.

[0009] Furthermore, the first link has a recess at the end near the second link, and the third link has a protrusion at the end away from the second link. When the third link is in contact with the second link and the protrusion is embedded in the recess, the two frame units connected by the outward folding mechanism are in a parallel state.

[0010] Furthermore, the second link is a bent structure to meet the stroke requirements of the outward folding mechanism to achieve folding or opening.

[0011] Furthermore, the guiding mechanism includes a damper, a first positioning pin passing through the female pivot member, a second positioning pin passing through the male pivot member, an arc-shaped groove on the female pivot member, and an arc-shaped protrusion on the male pivot member that matches the arc-shaped groove. The damper is provided with an arc-shaped track for the first positioning pin and the second positioning pin to slide.

[0012] When the first positioning pin and the second positioning pin approach each other and the arc-shaped protrusion is fully embedded in the arc-shaped groove, the two frame units connected by the inward folding mechanism are perpendicular to each other. When the arc-shaped protrusion gradually leaves the arc-shaped groove and the first positioning pin and the second positioning pin slide to both ends of the arc-shaped track, the two frame units connected by the inward folding mechanism are parallel to each other. At this time, the arc-shaped protrusion is still partially embedded in the arc-shaped groove. The two are not completely separated. This avoids the positional deviation that may cause the arc-shaped protrusion to not be accurately embedded and cause jamming when it needs to be re-embedded after the two are completely separated.

[0013] Furthermore, of the two groove walls along the radial direction of the arc-shaped groove, the inner one is the inner groove wall and the outer one is the outer groove wall. The outer groove wall extends circumferentially to form an extension section. As the arc-shaped protrusion gradually detaches from the arc-shaped groove, the arc-shaped protrusion fits into the extension section, and the extension section can guide the movement of the arc-shaped protrusion.

[0014] Furthermore, the arc-shaped protrusion has an arc-shaped segment on its inner side along its radial direction. The arc-shaped segment and the arc-shaped protrusion form a guide groove for the inner groove wall of the arc-shaped groove to be embedded. The inner groove wall of the arc-shaped groove and the guide groove cooperate with each other, and the arc-shaped protrusion and the arc-shaped groove cooperate with each other. The combination of the two can improve the accuracy of the relative movement of the female and male rotating shaft components.

[0015] Furthermore, the female pivot component includes two female wings arranged vertically and spaced apart, and a female connecting part for connecting the two. An arc-shaped groove is located on the female connecting part. The male pivot component includes two male wings arranged vertically and spaced apart, and a male connecting part for connecting the two. An arc-shaped protrusion is located on the male connecting part. A damper is partially located between the two female wings and partially located between the two male wings. When the two female wings are in contact with the two male wings, the two frame units connected by the inward folding mechanism are perpendicular to each other.

[0016] Furthermore, the two ends of each frame unit gradually converge from the outer wall to the inner wall to form an inclined section, and the inclined sections of two adjacent frame units fit together to form a square frame.

[0017] A frame comprising the aforementioned folding mechanism.

[0018] The beneficial effects of this invention are: the invention utilizes outward folding mechanism and inward folding mechanism to enable the square frame to be folded, the folded frame is convenient to transport, saving transportation costs, and the folded frame can be unfolded and put into use after arriving at the exhibition site, saving installation time. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a front view of the invention in its unfolded state;

[0021] Figure 2 This is a three-dimensional schematic diagram of the invention in its unfolded state;

[0022] Figure 3 This is an exploded view of the invention in its unfolded state;

[0023] Figure 4 This is a three-dimensional schematic diagram of the present invention in a folded state;

[0024] Figure 5 This is an exploded view of the invention in a folded state;

[0025] Figure 6 This is a three-dimensional schematic diagram of the outward folding mechanism in the folded state in this invention;

[0026] Figure 7 This is an exploded view of the outward folding mechanism in the present invention in a folded state;

[0027] Figure 8 This is a three-dimensional schematic diagram of the inward folding mechanism in the folded state of the present invention;

[0028] Figure 9 This is a three-dimensional schematic diagram of the inward folding mechanism in the unfolded state in this invention;

[0029] Figure 10 This is an exploded view of the inward folding mechanism in this invention;

[0030] In the picture:

[0031] 1. Frame unit; 101. Slanted section;

[0032] 2. Outward folding mechanism; 201. First outward folding bracket; 202. Second outward folding bracket; 203. First connecting rod; 2031. Recess; 204. Second connecting rod; 205. Third connecting rod; 2051. Protrusion; 206. Fourth connecting rod;

[0033] 3. Inward folding mechanism; 301. Female pivot; 3011. Arc groove; 3012. Extension section; 3013. Female wing; 302. Male pivot; 3021. Arc protrusion; 3022. Arc section; 3023. Guide groove; 3024. Male wing; 303. Damper; 3031. Arc track; 304. First positioning pin; 305. Second positioning pin. Detailed Implementation

[0034] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and directions and references, such as up, down, left, right, etc., are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0035] Example 1: As Figure 1 As shown, the present invention is a folding mechanism for a frame. The frame is a square frame and includes four side frame units 1 connected end to end. Each side frame unit 1 is a profile. Both ends of the profile gradually approach each other from the outer wall to the inner wall to form an inclined portion 101 with an inclination angle of 45°. The inclined portions 101 of two adjacent side frame units 1 are fitted together to form a square frame.

[0036] like Figures 2-5As shown, a folding mechanism is provided between two adjacent frame units 1. The folding mechanism includes two outward folding mechanisms 2 and two inward folding mechanisms 3 arranged diagonally. That is, the outward folding mechanisms 2 and the inward folding mechanisms 3 are arranged at intervals along the circumference of the square frame.

[0037] like Figure 6 and Figure 7 As shown, the outward folding mechanism 2 is used to stretch two adjacent frame units 1 from a vertical state to a parallel state. Similarly, the two can also return from a parallel state to a vertical state. When the two are perpendicular to each other, it is an unfolded state; when the two are parallel to each other, it is a folded state. The outward folding mechanism 2 includes a first outward folding bracket 201 fixed to one of the two adjacent frame units 1, a second outward folding bracket 202 fixed to the other frame unit 1, and a linkage mechanism connecting the first outward folding bracket 201 and the second outward folding bracket 202. The first outward folding bracket 201 and the second outward folding bracket 202 drive the two adjacent frame units 1 to generate relative movement through the linkage mechanism, so that the two frame units 1 connected to it are in an unfolded or folded state. When the two frame units 1 connected to the outward folding mechanism 2 are in an unfolded state, the outward folding mechanism 2 is located inside the two frame units 1.

[0038] The linkage mechanism includes a first link 203, a second link 204, a third link 205, and a fourth link 206. One end of the first link 203 is hinged to a first outward folding bracket 201, and the other end is hinged to one end of the second link 204. The other end of the second link 204 is hinged to a second outward folding bracket 202, and the middle part of the second link 204 is hinged to one end of the third link 205. The other end of the third link 205 is hinged to the first outward folding bracket 201, and the middle part of the third link 205 is hinged to the fourth link 206. The other end of the fourth link 206 is hinged to the second outward folding bracket 202. The second link 204 has a bent structure.

[0039] The first link 203 has a recess 2031 at the end near the second link 204, and the third link 205 has a protrusion 2051 at the end away from the second link 204. When the third link 205 is in contact with the second link 204 and the protrusion 2051 is embedded in the recess 2031, the two frame units 1 connected by the outward folding mechanism 2 are in a parallel state.

[0040] like Figures 8-10As shown, the inward folding mechanism 3 is used to bend two adjacent frame units 1 from a vertical state inward to a parallel state. Similarly, the two can also return from a parallel state to a vertical state. It includes a female pivot 301 fixed to one of the two adjacent frame units 1, a male pivot 302 fixed to the other frame unit 1, and a guide mechanism for guiding the relative movement of the female pivot 301 and the male pivot 302. The female pivot 301 and the male pivot 302 rotate along the guide mechanism so that the two frame units 1 connected to them are in an unfolded or folded state.

[0041] The guiding mechanism includes a damper 303, a first positioning pin 304 passing through the female pivot 301, a second positioning pin 305 passing through the male pivot 302, an arc-shaped groove 3011 on the female pivot 301, and an arc-shaped protrusion 3021 on the male pivot 302 that matches the arc-shaped groove 3011. The damper 303 is provided with an arc-shaped track 3031 for the first positioning pin 304 and the second positioning pin 305 to slide.

[0042] The female pivot component 301 includes two female wings 3013 arranged vertically and spaced apart, and a female connecting part for connecting the two. An arc-shaped groove 3011 is located on the female connecting part. The male pivot component 302 includes two male wings 3024 arranged vertically and spaced apart, and a male connecting part for connecting the two. An arc-shaped protrusion 3021 is located on the male connecting part. The two female wings 3013 and the two male wings 3024 are approximately triangular. The female connecting part and the male connecting part are located at the apex of the triangle. The damper 303 is partially located between the two female wings 3013 and partially located between the two male wings 3024.

[0043] When the first positioning pin 304 and the second positioning pin 305 approach each other until the two female wings 3013 and the two male wings 3024 are in contact, and the arc-shaped protrusion 3021 is fully embedded in the arc-shaped groove 3011, the two frame units 1 connected to the inward folding mechanism 3 are perpendicular to each other. When the arc-shaped protrusion 3021 gradually separates from the arc-shaped groove 3011, and the first positioning pin 304 and the second positioning pin 305 slide to both ends of the arc-shaped track 3031, the two frame units 1 connected to the inward folding mechanism 3 are parallel to each other. At this time, the arc-shaped protrusion 3021 is still partially embedded in the arc-shaped groove 3011. The two are not completely separated. This avoids the positional deviation that may cause the arc-shaped protrusion 3021 to not be accurately embedded and to cause jamming when it needs to be re-embedded after the two are completely separated.

[0044] Of the two groove walls along the radial direction of the arc-shaped groove 3011, the inner one is the inner groove wall and the outer one is the outer groove wall. The outer groove wall extends circumferentially to form an extension section 3012. As the arc-shaped protrusion 3021 gradually separates from the arc-shaped groove 3011, the arc-shaped protrusion 3021 and the extension section 3012 fit together. The extension section 3012 can guide the movement of the arc-shaped protrusion 3021.

[0045] The arc-shaped protrusion 3021 has an arc-shaped segment 3022 on its inner side along its radial direction. The arc-shaped segment 3022 and the arc-shaped protrusion 3021 form a guide groove 3023 for the inner groove wall of the arc-shaped groove 3011 to be embedded. The inner groove wall of the arc-shaped groove 3011 and the guide groove 3023 cooperate with each other, and the arc-shaped protrusion 3021 and the arc-shaped groove 3011 cooperate with each other. The combination of the two can improve the accuracy of the relative movement of the female rotating shaft 301 and the male rotating shaft 302.

[0046] Embodiment 2 provides a frame including the folding mechanism described above.

[0047] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the scope of the claims.

Claims

1. A folding mechanism for a frame, the frame being a square frame comprising four end-to-end frame units (1), wherein the folding mechanism is provided in every two adjacent frame units (1), characterized in that: The folding mechanism includes two diagonally arranged outward folding mechanisms (2) and two diagonally arranged inward folding mechanisms (3); The outward folding mechanism (2) is used to stretch two adjacent frame units (1) from a vertical state to a parallel state. It includes a first outward folding bracket (201) fixed to one of the two adjacent frame units (1), a second outward folding bracket (202) fixed to the other frame unit (1), and a linkage mechanism connecting the first outward folding bracket (201) and the second outward folding bracket (202). The linkage mechanism is a multi-link linkage mechanism used to guide and limit the relative movement trajectory of the first outward folding bracket (201) and the second outward folding bracket (202). The inward folding mechanism (3) is used to bend two adjacent frame units (1) from a vertical state inward to a parallel state. It includes a female pivot (301) fixed to one of the two adjacent frame units (1), a male pivot (302) fixed to the other frame unit (1), and a guide mechanism for guiding the relative movement of the female pivot (301) and the male pivot (302) and limiting their relative rotation angle. The guide mechanism includes a central pivot component and a limiting guide structure arranged around the central pivot component and used to guide the female pivot (301) and the male pivot (302) to rotate around the central pivot component. The central pivot component includes an arc groove (3011) on the female pivot (301) and an arc protrusion (3021) on the male pivot (302) that matches the arc groove (3011).

2. A folding mechanism for a frame according to claim 1, characterized in that: The linkage mechanism includes a first link (203), a second link (204), a third link (205), and a fourth link (206). One end of the first link (203) is hinged to a first outward folding bracket (201), and the other end is hinged to one end of the second link (204). The other end of the second link (204) is hinged to a second outward folding bracket (202). The middle part of the second link (204) is hinged to one end of the third link (205). The other end of the third link (205) is hinged to the first outward folding bracket (201). The middle part of the third link (205) is hinged to the fourth link (206). The other end of the fourth link (206) is hinged to the second outward folding bracket (202).

3. A folding mechanism for a frame according to claim 2, characterized in that: The first link (203) has a recess (2031) at the end near the second link (204), and the third link (205) has a protrusion (2051) at the end away from the second link (204). When the third link (205) is in contact with the second link (204) and the protrusion (2051) is embedded in the recess (2031), the two frame units (1) connected by the outward folding mechanism (2) are in a parallel state.

4. A folding mechanism for a frame according to claim 2, characterized in that: The second link (204) is a bent structure.

5. A folding mechanism for a frame according to claim 1, characterized in that: The limiting guide structure includes a damper (303), a first positioning pin (304) passing through the female pivot (301) and a second positioning pin (305) passing through the male pivot (302), and the damper (303) has an arc-shaped track (3031) for the first positioning pin (304) and the second positioning pin (305) to slide. When the first positioning pin (304) and the second positioning pin (305) approach each other and the arc protrusion (3021) is fully embedded in the arc groove (3011), the two frame units (1) connected by the inward folding mechanism (3) are perpendicular to each other. When the first positioning pin (304) and the second positioning pin (305) slide to the two ends of the arc track (3031), the two frame units (1) connected by the inward folding mechanism (3) are parallel to each other.

6. A folding mechanism for a frame according to claim 5, characterized in that: The arc-shaped groove (3011) has two groove walls along its radial direction, the inner one being the inner groove wall and the outer one being the outer groove wall, and the outer groove wall extends circumferentially to form an extension section (3012).

7. A folding mechanism for a frame according to claim 6, characterized in that: The arc-shaped protrusion (3021) has an arc-shaped segment (3022) on its inner side along its radial direction. The arc-shaped segment (3022) and the arc-shaped protrusion (3021) form a guide groove (3023) for the inner groove wall of the arc-shaped groove (3011) to be embedded.

8. A folding mechanism for a frame according to claim 5, characterized in that: The female pivot component (301) includes two female wings (3013) distributed vertically and a female connecting part for connecting the two. An arc groove (3011) is located on the female connecting part. The male pivot component (302) includes two male wings (3024) distributed vertically and a male connecting part for connecting the two. An arc protrusion (3021) is located on the male connecting part. When the two female wings (3013) and the two male wings (3024) are in contact, the two frame units (1) connected by the inward folding mechanism (3) are perpendicular to each other.

9. A folding mechanism for a frame according to claim 1, characterized in that: Each frame unit (1) has two ends that gradually move from the outer wall to the inner wall to form an inclined part (101), and the inclined parts (101) of two adjacent frame units (1) fit together to form a square frame.

10. A frame, characterized in that: Includes the folding mechanism as described in any one of claims 1-9.

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