A support folding stand

Abstract

The utility model discloses a support folding frame, include: base, and the telescopic support unit of being connected to the base, the telescopic support unit includes the first end plate and the second end plate of opposite setting, set up in the telescopic portion between two end plates, the clamping portion of rotation connection in the first end plate and / or the second end plate, and the supporting portion, the supporting portion includes the first supporting piece of rotation connection in the first end plate bottom, and the second supporting piece of rotation connection in the second end plate bottom, and the board spacing is left between the first supporting piece and the second supporting piece, when the telescopic portion stretches or contracts, and the board spacing of first supporting piece and second supporting piece changes. The utility model through the cooperation of telescopic unit and supporting portion, when the telescopic portion stretches or contracts, the range of the length size of the file placed changes accordingly. The adjusting design can adjust the supporting portion to the width suitable according to the actual file size, relatively or opposite or back moving two end plates can adjust the supporting portion to the width suitable, not only has stronger adaptability, still expands the use range.

Description

Technical Field

[0001] This utility model belongs to the field of support equipment technology, and in particular relates to a support folding frame. Background Technology

[0002] Traditional document folding shelves have limitations when dealing with documents of different sizes, especially documents of varying lengths. Existing document support panels lack adjustment functionality, or their dimensions don't match the shelf's adjustment mechanism, preventing flexible adaptation to different document sizes. This results in documents either exceeding the support panel's width or being loosely placed on it, hindering smooth reading and causing inconvenience when flipping through pages.

[0003] Chinese patent CN211980186U discloses a music stand for preschool music teaching. It involves placing the stand on the ground with its legs open, sliding the first support arm to a suitable height, tightening the knob at the fixing hole, and adjusting the angle of the placement plate by adjusting the buckle to place the music stand into the slot. The music stand has clips to hold the music. The telescopic length of the cross-shaped frame can be adjusted according to the size of the music. When used alone, the music stand can be removed, the feet rotated out of the groove and placed on a flat surface, and the adjusting plate rotated to place the side away from the mounting frame into the corresponding groove according to the required tilt angle. While this music stand is suitable for various music teaching scenarios, its placement plate lacks a folding function. The storage process is cumbersome, and the folded-out design occupies considerable space, causing inconvenience for daily storage. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a folding support rack with a telescopic support unit that has an adjustment function to accommodate documents of different sizes, flexibly meeting the placement needs of various document sizes. Through the adjustment function of the telescopic support unit, users can conveniently adjust the size of the support portion according to actual needs, thereby ensuring that documents can be stably placed on the rack, providing users with a flexible and convenient document placement space.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a supporting folding frame, comprising: A base and a telescopic support unit connected to the base, the telescopic support unit including a first end plate and a second end plate disposed opposite to each other, a telescopic part disposed between the two end plates, a clamping part rotatably connected to the first end plate and / or the second end plate, and a supporting part, the supporting part including a first supporting member rotatably connected to the bottom of the first end plate and a second supporting member rotatably connected to the bottom of the second end plate, a plate spacing between the first supporting member and the second supporting member, the plate spacing between the first supporting member and the second supporting member changing when the telescopic part extends or retracts.

[0006] This invention utilizes the cooperation between the telescopic unit and the supporting part. When the telescopic part extends or retracts, the distance between the first and second supporting parts changes synchronously. In other words, when the telescopic part extends or retracts, the overall length of the supporting part changes, thus changing the range of document lengths that can be placed on it. This allows it to accommodate documents of different lengths and place them stably on the supporting part. This adjustment design allows the supporting part to be adjusted to a suitable width by moving the first and second end plates relative to or opposite to each other, according to the actual document size. It has strong adaptability and can be used for a wide range of document sizes.

[0007] Furthermore, a first arc-shaped groove is formed at the bottom of the first end plate, and the first support member has a first protrusion that falls into the first arc-shaped groove. When the first protrusion rotates in the first arc-shaped groove, the first support member can switch between an unfolded position and a retracted position. In the retracted position, the first support member and the first end plate overlap. The bottom of the second end plate forms a second arc-shaped groove, and the second support member has a second protrusion that falls into the second arc-shaped groove. When the second protrusion rotates in the second arc-shaped groove, the second support member can switch between an unfolded position and a retracted position. In the retracted position, the second support member and the second end plate overlap.

[0008] The first arc-shaped groove at the bottom of the first end plate mates with the first protrusion of the first support member, and the second arc-shaped groove at the bottom of the second end plate mates with the second support member. These respectively restrict the range of motion of the first and second supports members, ensuring that they do not shift or jam during the rotational switching between unfolding and retracting. The overall structure is simple and easy to operate. At the same time, when both the first and second supports members are in the retracted position, the positions of the first support member and the first end plate, and the second support member and the second end plate, are more compact, effectively saving storage space while ensuring functionality.

[0009] Furthermore, the first support includes a first support portion and a first stop portion. The first support portion supports the bottom of the document, and the first stop portion supports the back of the document. By restraining the bottom and back of the document against each other, the document can be stably supported, preventing it from slipping due to slight touches and making it easier for the user to flip through.

[0010] Furthermore, the rotation angle between the folded and unfolded positions is 90°. When the support is in the unfolded position, it is perpendicular to the end plate and positioned appropriately for placing documents; when the support is in the folded position, it is parallel to the end plate and fully overlaps it, without occupying space due to exceeding the end plate, making the positional relationship between the two more compact. This rotation angle setting is just right to ensure stable placement of documents while saving storage space when folded.

[0011] Furthermore, the first end plate is provided with a first slot, the opening of which has a first guide surface; the first clamping part rotatably connected to the first end plate has a first protrusion, and when the first clamping part rotates to overlap with the first end plate, the first protrusion engages with the first slot along the first guide surface. The first guide surface facilitates the smooth entry of the first protrusion in the first clamping part into the first slot, while the clamping part remains parallel to the first or second end plate, reserving space for subsequent folding and saving storage space.

[0012] Furthermore, the telescopic section includes multiple X-shaped telescopic units, adjacent telescopic units are movably connected by a pivot, and the end plate is provided with a travel groove along the height direction for the pivot of the edge telescopic unit to move. This travel groove ensures that the telescopic unit will not shift or jam during movement, effectively guaranteeing the stability and smoothness of the telescopic section's extension and retraction, thereby flexibly adapting to the placement needs of documents of different sizes.

[0013] Furthermore, the base includes a tripod support frame and a mounting plate. The tripod support frame extends upward to form a telescopic rod, the top of which is rotatably connected to the mounting plate via a locking mechanism. The angle between the telescopic rod and the mounting plate is adjustable. The telescopic part is connected to the mounting plate. The base is foldable and can be stacked with the telescopic support unit for storage. When folded, it occupies little space, effectively saving storage space. The steps are simple, the operation is easy to understand, and it can be quickly folded and unfolded, improving usage efficiency.

[0014] This utility model proposes a support folding frame to solve the problems of existing support plates being unable to be adjusted, or the adjustment dimensions of the support plate and the placement rack not matching, which leads to documents easily slipping or being damaged during use. While ensuring that documents can be placed on the rack, it also allows the adjustment dimensions between the support plate and the placement rack to correspond, flexibly meeting the placement needs of documents of various sizes and improving the user's reading experience.

[0015] The beneficial effects of this utility model are: through the cooperation of the telescopic unit and the support part, when the telescopic part extends or retracts, the plate spacing between the first support and the second support part changes synchronously, which can accommodate documents of different sizes to be placed stably on the support part, making its application range wider and its adaptability stronger; the support folding frame occupies little space after being retracted, making it easy to transfer and carry. Attached Figure Description

[0016] Figure 1 The three-dimensional support folding frame of this utility model Figure 1 .

[0017] Figure 2 This is an exploded view of the folding support frame of this utility model. Figure 1 .

[0018] Figure 3 This is a schematic diagram showing the rotation of the support and telescopic parts of the folding support frame of this utility model. Figure 1 .

[0019] Figure 4 Enlarged schematic diagram of the rotating support part of this utility model Figure 1 .

[0020] Figure 5 Enlarged schematic diagram of the clamping part rotating according to this utility model Figure 1 .

[0021] Figure 6 A partial enlargement of the first end plate of this utility model. Figure 1 .

[0022] Figure 7 The first support part of this utility model is three-dimensional. Figure 1 .

[0023] Figure 8 A partial enlargement of the first support portion of this utility model. Figure 1 .

[0024] Figure 9 The first clamping part of this utility model is three-dimensional. Figure 1 .

[0025] Figure 10 Cross-sectional view of the folding support frame of this utility model Figure 1 .

[0026] Figure 11 The telescopic unit of this utility model Figure 1 .

[0027] Figure 12 The three-dimensional support folding frame of this utility model is in the retracted position when the telescopic part is in the folded position. Figure 1 .

[0028] Figure 13 The locking mechanism of this utility model is three-dimensional. Figure 1 .

[0029] Figure 14 The locking mechanism of this utility model is three-dimensional. Figure 2 .

[0030] Figure 15 The three-dimensional support folding frame of this utility model is in the folded state. Figure 1 .

[0031] Among them, 1-base, 11-tripod support frame, 12-mounting plate, 13-locking mechanism, 131-adjusting screw, 132-adjusting nut, 133-first gear adjusting plate, 134-second gear adjusting plate, 14-telescopic rod, 2-telescopic support unit, 21-first end plate, 211-first arc-shaped slide groove, 212-first slot, 213-first guide surface, 214-first connecting shaft, 215-first vertical end face, 216-first horizontal end face, 2 2-Second end plate, 221-Second arc-shaped slide groove, 23-Stroke groove, 3-Telescopic part, 31-Telescopic unit, 32-Rotating shaft, 33-Edge telescopic unit, 4-Clamping part, 41-First clamping part, 412-First protrusion, 5-Supporting part, 51-First support member, 511-First protrusion, 512-First support part, 513-First stop, 514-First connecting hole, 52-Second support member, 521-Second protrusion, 53-Plate spacing, 6-Document. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0033] like Figures 1-2As shown, a folding support frame includes a base 1, a telescopic support unit 2, and a support portion 5. The base 1 is connected to the telescopic support unit 2, which has a set of relatively parallel first end plates 21 and second end plates 22. A telescopic portion 3 is provided between the two end plates to adjust the distance between the first end plates 21 and the second end plates 22. A clamping portion 4 is rotatably connected to the first end plate 21, or to the second end plate 22, or both the first end plate 21 and the second end plate 22. Furthermore, the bottoms of the first end plate 21 and the second end plate 22 are rotatably connected to the support portion 5, which includes a first support member 51 and a second support member 52. The bottom of the first end plate 21 is rotatably connected to the first support member 51, and the bottom of the second end plate 22 is rotatably connected to the second support member 52.

[0034] Specifically, the telescopic support unit 2 is connected to the base 1. By moving the first end plate 21 and the second end plate 22, the two end plates can move towards or away from each other. At this time, the telescopic part 3 located between the two ends is stretched or retracted by the tension or pressure of the first end plate 21 and the second end plate 22. As the distance between the first end plate 21 and the second end plate 22 changes, the plate distance 53 between the first support member 51 and the second support member 52 connected to their bottoms also expands or shrinks synchronously. That is to say, when the telescopic part 3 is stretched or retracted by moving the first end plate 21 and the second end plate 22, the distance between the first support member 51 and the second support member 52 at one end away from each other changes, and the range of document sizes that the support part 5 can stably support changes synchronously, so that documents of different sizes 6 can be placed on the support part 5, especially documents of different lengths. This adjustable design allows the support portion 5 to be adjusted to a suitable overall length by relatively moving the first end plate 21 and the second end plate 22 according to the actual size of the document 6. The length of the support portion 5 includes the length of the first support member 51, the length of the second support member 52, and the plate spacing 53. This flexibly meets the placement requirements of documents 6 of various sizes, ensuring that documents 6 of different sizes can be placed stably on the support portion 5. It not only has strong adaptability but also provides users with a better reading experience.

[0035] In this embodiment, file 6 is a musical score; however, in other embodiments, it can be any item such as a book.

[0036] like Figures 3-4 , Figures 6-8As shown, the bottom of the first end plate 21 is provided with a first connecting shaft 214 and a first arc-shaped groove 211 concentric with the first connecting shaft 214. The first vertical end face 215 of the first arc-shaped groove 211 is parallel to the length direction of the first end plate 21; the first horizontal end face 216 of the first arc-shaped groove 211 is perpendicular to the length direction of the first end plate 21. In this embodiment, the first arc-shaped groove 211 is a 90° arc-shaped groove. Of course, in other implementation cases, grooves with different angles and different corresponding positional relationships can also be set according to actual needs. No specific limitation is imposed.

[0037] Correspondingly, a first connecting hole 514 is provided at the end of the first support member 51, and a first protrusion 511 protrudes from the surface of the first support member 51 in the radial extension direction of the first connecting hole 514. That is, while the first connecting shaft 214 of the first end plate 21 is coaxially rotated with the first connecting hole 513 of the first support member 51, the first protrusion 511 of the first support member 51 falls exactly into the first arc-shaped sliding groove 211 of the first end plate 21; that is, through the rotational engagement of the first connecting hole 514 and the first connecting shaft 214, the first protrusion 511 is driven to slide along the first arc-shaped sliding groove 211, so that the first support member 51 can flexibly switch between the unfolded position and the retracted position, and will not deviate from the unfolded position or the retracted position due to excessive rotation. In addition, the first support member 51 includes a first support portion 512 and a first stop portion 513, which are used to support the bottom and back of the document 6 respectively, so that the document 6 can be placed stably on the first support member 51, making it convenient for users to read and browse, and preventing the document 6 from slipping off due to the document 6 tilting backward during browsing or display.

[0038] Specifically, such as Figures 3-4 As shown by the solid line portion of the first support member 51, the first support member 51 is in the unfolded position, with the surface of its first protrusion 511 abutting against the first transverse end face 216 of the first arc-shaped slide groove 211. The first support member 51 and the first end plate 21 are perpendicular to each other. At this time, the document 6 can be stably placed on the first support member 51, making it convenient for the user to read and flip through. When it is necessary to fold up the support frame, the first support member 51 can be rotated counterclockwise. The side wall of the first protrusion 511 slides along the arc surface of the first arc-shaped slide groove 211 until the other surface of the first protrusion 511 abuts against the first vertical end face 215 of the first arc-shaped slide groove 211. At this time, the first support member 51 is parallel to the first end plate 21 and completely overlapped. Figures 3-4The dotted line indicates the first support member 51. At this time, the first support member 51 is in the folded position. After folding, the position of the first support member 51 and the first end plate 21 is more compact, effectively saving storage space while ensuring its functionality. Simultaneously, the angle of the first arc-shaped slide 211 limits the range of motion of the first support member 51, ensuring that the first support member 51 will not shift or jam during the switching between the unfolded and folded positions. Furthermore, the overall structure is simple and easy to operate.

[0039] like Figure 3 As shown, the second end plate 22 is symmetrically positioned to the first end plate 21, and the second support member 52 is symmetrically positioned to the first support member 51. The bottom of the second end plate 22 is rotatably connected to the second support member 52 and is provided with a second arc-shaped groove 221 that engages with the second protrusion 521 of the second support member 52. That is, when the first support member 51 and the second support member 52 rotate relative to each other until the first support member 51 and the first end plate 21 are perpendicular to each other, the first support member 51 and the second support member 52 are on the same horizontal plane. Figure 3 As shown by the solid lines of the first support 51 and the second support 52, both supports are in the unfolded position. In this state, compared to unfolding only one support, it can accommodate documents that are longer. That is to say, when the document 6 is small, the first support 51 or the second support 52 can be unfolded to place the document 6; when the document 6 is large, the first support 51 and the second support 52 can be unfolded together and adjusted to fit the size before placing the document 6. This design has strong adaptability to the size of the document 6, and can flexibly adapt to the placement needs of documents of different sizes, thus improving the user's reading experience.

[0040] like Figure 5 , Figure 9 As shown, the clamping part 4 includes a first clamping part 41, which is rotatably connected to the first end plate 21. The first end plate 21 has a first slot 212, the lower end face of which mates with the rotational trajectory of the first clamping part 41 to form a first guide surface 213. Correspondingly, the first clamping part 41 has a cylindrical first protrusion 412, which mates with the first guide surface 213. The first protrusion 412 can smoothly slide into the first slot 212 along the first guide surface 213.

[0041] Specifically, such as Figure 5As shown in the solid line portion of the clamping part 41, the first clamping part 41 is in the unfolded position, forming a clamp on the left side of the document 6, fixing the required pages of the document 6 for easy reading by the user. When the first clamping part 41 rotates counterclockwise around the connection of the first end plate 21, the side wall of the first protrusion 412 slides along the first guide surface 213 until the first protrusion 412 is fully inserted into the first slot 212; at this time, the first clamping part 41 and the first end plate 21 are completely overlapped, as shown in the solid line portion. Figure 5 As shown by the dashed line of the middle clamping part 41, the first clamping part 41 is in the folded position at this time. After it is folded, its structure with the first end plate 21 is more compact, saving storage space.

[0042] The clamping part 4 can be disposed on the second end plate 22, or it can be disposed on both the first end plate 21 and the second end plate 22. In this solution, the clamping part 4 is disposed on both the first end plate 21 and the second end plate 22, so that it can more effectively and stably clamp the document 6; whether it is a single page document 6 or a page-turning document 6, it can ensure that the document 6 is always in an unfolded state, which is convenient for users to read. Of course, in other implementation cases, one or more sets of clamping parts can be disposed according to actual needs, and there is no specific limitation.

[0043] like Figures 10-11 As shown, the telescopic section 3 is composed of multiple X-shaped telescopic units 31. Adjacent telescopic units 31 are movably connected by a pivot 32 to form a telescopic structure. The ends of the edge telescopic units 33 are movably connected to the travel groove 23 cut out at the top of the end plate via the pivot 32. In this solution, three X-shaped telescopic units 31 are used. Of course, in other implementations, one or more X-shaped telescopic units 31 can be set according to actual needs, and there is no specific limitation.

[0044] The telescopic length of the telescopic unit 3 is limited by the travel groove 23. Specifically, when the pivot 32 of the edge telescopic unit 33 is at the lower end of the travel groove 23, the telescopic unit 3 is in the extended position, meaning the total length of the supporting part 5 is at its longest, allowing for the placement of documents 6 at their maximum length. When the pivot 32 of the edge telescopic unit 33 is at the upper end of the travel groove 23, the telescopic unit 3 is in the retracted position, meaning the total length of the supporting part 5 is at its shortest, allowing for the placement of documents 6 at their shortest length. This travel groove 23 ensures that the telescopic unit 31 will not shift or jam during operation, effectively guaranteeing the stability and smoothness of the telescopic unit 3's extension and retraction, thus flexibly adapting to the placement needs of documents 6 of different sizes.

[0045] like Figures 12-15As shown, the base 1 is provided with a tripod support frame 11, which extends upward to form a telescopic rod 14. The top of the telescopic rod 14 is rotatably connected to the mounting plate 12, which is connected to the telescopic part 3 to form a support folding frame. A locking mechanism 13 is provided between the telescopic rod 14 and the mounting plate 12. The locking mechanism 13 includes an adjusting screw 131 at the top of the telescopic rod 14, a first gear adjusting disc 133, and an adjusting nut 132 and a second gear adjusting disc 134 at the bottom of the mounting plate 12. That is, the telescopic rod 14 and the mounting plate 12 are rotatably connected by the adjusting screw 13 and the adjusting nut 132. When the adjusting screw 13 and the adjusting nut 132 are in a loose state, the first gear adjusting disc 133 and the second gear adjusting disc 134 are disengaged, and the mounting plate 12 can be rotated to adjust to a suitable position. Then, the adjusting nut 132 is tightened, so that the first gear adjusting disc 133 and the second gear adjusting disc 134 are engaged, and the angle of the mounting plate 12 is fixed. The locking mechanism 13 can be any structure in the prior art, and there is no specific limitation.

[0046] Specifically, the three legs of the tripod support frame 11 of the base 1 are arranged in a triangle, which can effectively distribute the pressure and provide a stable support foundation for the entire folding support frame. When it is necessary to adjust the height of the folding support frame, it can be adjusted by the telescopic rod 14 to meet different height requirements. When it is necessary to adjust the angle of the folding support frame, the locking mechanism 13 can be used to rotate the adjusting nut 132 to disengage the first gear adjusting plate 133 and the second gear adjusting plate 134, so that the mounting plate 12 is fixed at the current required angle. Then, by rotating the adjusting nut 132, the first gear adjusting plate 133 and the second gear adjusting plate 134 are engaged, thereby fixing the mounting plate 12 at the current required angle. During the storage operation, the tripod support frame 11 can be folded up, the telescopic rod 14 can be retracted, the engaging state of the locking mechanism 13 can be released, and the mounting plate 12 can be rotated to fold the mounting plate 12 and the telescopic support unit 2, which is already in the folded position, together. The tripod support frame 11 part overlaps with the telescopic support unit 2 part, as shown below. Figure 15 As shown, the folding support frame is in a fully folded state at this time. In this state, the overall structure of the folding support frame is compact and occupies little space, which not only effectively saves storage space, but also makes it easy for users to carry around daily, improving usage efficiency.

[0047] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A folding support frame, comprising a base (1) and a telescopic support unit (2) connected to the base (1), characterized in that: The telescopic support unit (2) includes a first end plate (21) and a second end plate (22) disposed opposite to each other, a telescopic part (3) disposed between the two end plates, a clamping part (4) rotatably connected to the first end plate (21) and / or the second end plate (22), and a support part (5). The support part (5) includes a first support member (51) rotatably connected to the bottom of the first end plate (21) and a second support member (52) rotatably connected to the bottom of the second end plate (22). A plate spacing (53) is left between the first support member (51) and the second support member (52). When the telescopic part (3) extends or retracts, the plate spacing (53) between the first support member (51) and the second support member (52) changes.

2. The supporting folding frame according to claim 1, characterized in that: The bottom of the first end plate (21) forms a first arc-shaped groove (211), and the first support member (51) has a first protrusion (511) that falls into the first arc-shaped groove (211). When the first protrusion (511) rotates in the first arc-shaped groove (211), the first support member (51) can switch between an unfolded position and a retracted position. In the retracted position, the first support member (51) and the first end plate (21) overlap. The bottom of the second end plate (22) forms a second arc-shaped groove (221), and the second support member (52) has a second protrusion (521) that falls into the second arc-shaped groove (221). When the second protrusion (521) rotates in the second arc-shaped groove (221), the second support member (52) can switch between the unfolded position and the retracted position. In the retracted position, the second support member (52) and the second end plate (22) overlap.

3. The supporting folding frame according to claim 1 or 2, characterized in that: The first support member (51) includes a first support portion (512) and a first stop portion (513). The first support portion (512) is used to support the bottom of the document (6), and the first stop portion (513) is used to support the back of the document (6).

4. The supporting folding frame according to claim 2, characterized in that: The rotation angle between the collapsible and unfolded positions is 90°.

5. The supporting folding frame according to claim 1, characterized in that: The first end plate (21) is provided with a first slot (212), and the opening of the first slot (212) has a first guide surface (213); the first clamping part (41) rotatably connected to the first end plate (21) has a first protrusion (412). When the first clamping part (41) rotates to overlap with the first end plate (21), the first protrusion (412) is inserted into the first slot (212) along the first guide surface (213).

6. The supporting folding frame according to claim 1, characterized in that: The telescopic part (3) includes multiple X-shaped telescopic units (31), adjacent telescopic units (31) are movably connected by a pivot (32), and the end plate is provided with a travel groove (23) along the height direction for the pivot (32) of the edge telescopic unit (33) to move.

7. The supporting folding frame according to claim 1, characterized in that: The base (1) includes a tripod support frame (11) and a mounting plate (12). The tripod support frame (11) extends upward to form a telescopic rod (14). The top end of the telescopic rod (14) is rotatably connected to the mounting plate (12) through a locking mechanism (13), and the included angle between the telescopic rod (14) and the mounting plate (12) is adjustable. The telescopic part (3) is connected to the mounting plate (12).

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