Clamping mechanism and file clamping plate

Abstract

The clamping mechanism comprises an upper clamping plate and a lower clamping plate which can rotate relatively, the upper clamping plate and the lower clamping plate are elastically hinged to form a jaw capable of being opened and closed, and an elastic limiting structure distributed in the paper insertion direction is arranged on the clamping face of at least one side of the jaw. The elastic limiting structure is barb-shaped, and the free end of the elastic limiting structure is obliquely arranged in the direction away from the jaw. When the jaw is closed, the elastic limiting structure is matched with the clamping face on the other side of the jaw or the corresponding elastic limiting structure, and a paper containing space with the elastic receding capacity is formed in the clamping area. When paper enters the jaw in the insertion direction, the elastic limiting structure is extruded by the paper to elastically deform so as to allow the paper to enter, and when the paper moves in the opposite direction, the free end of the elastic limiting structure blocks the paper. According to the clamping mechanism, through structural improvement, paper is small in resistance when being inserted, and the paper can smoothly enter a clamping area.

Description

Technical Field

[0001] This invention relates to the field of office supplies technology, and more specifically, to a clamping mechanism and a folder board. Background Technology

[0002] File folders, as common office and school supplies, are typically used to position and hold paper on a writing board for writing, drawing, or note-taking. In existing technology, file folders generally integrate a clip structure at the top of the writing board to hold the edges of the paper, thus preventing slippage during use.

[0003] To improve clamping stability and friction with the paper, existing solutions typically incorporate anti-slip structures at the contact points of the upper clamp or writing board. For example, Chinese utility model patent CN221851582U discloses a document clip that includes a clip body with a clip at the top and an anti-slip pad on the clip to enhance the clip's gripping effect on the paper.

[0004] However, the aforementioned existing technical solutions still have certain shortcomings in practical use. Since the clips typically need to be opened by pressing or lifting, when placing paper, users often need one hand to operate the clip while the other hand places or arranges the paper, making the operation cumbersome and difficult to complete with one hand. In scenarios requiring frequent paper changes or where standing or walking makes it inconvenient to use both hands, this method easily reduces efficiency and affects the user experience. Summary of the Invention

[0005] To address the issues that existing paper-holding mechanisms typically rely on clamping or anti-slip pads for securing paper, which often result in paper easily slipping back under external force, insufficient clamping stability, and inconvenience in inserting or adjusting paper, making smooth one-handed operation difficult, this invention provides a clamping mechanism that, through structural improvements, reduces resistance during paper insertion, allowing it to smoothly enter the clamping area, while effectively restricting reverse movement, thereby enhancing clamping stability and ease of use.

[0006] This invention also proposes a folder board having the above-described clamping mechanism.

[0007] The technical solution adopted in this invention is as follows: a clamping mechanism is provided, including an upper clamping plate and a lower clamping plate that can rotate relative to each other. The upper clamping plate and the lower clamping plate are elastically hinged to form a jaw that can be opened and closed. At least one clamping surface of the jaw is provided with an elastic limiting structure distributed along the paper insertion direction. The elastic limiting structure is barbed, and its free end is inclined away from the jaw.

[0008] When the jaws are closed, the elastic limiting structure cooperates with the clamping surface on the other side of the jaws or a corresponding elastic limiting structure to form a paper-accommodating space with elastic clearance capability within the clamping area. When the paper enters the jaws in the insertion direction, the elastic limiting structure undergoes elastic deformation under the pressure of the paper, providing space for the paper to pass through; while when the paper moves in the opposite direction, the free end of the elastic limiting structure forms a block with the paper, thereby restricting the paper from retraction and achieving anti-retraction clamping of the paper.

[0009] Compared with the prior art, the present invention has at least the following beneficial effects: 1. By setting a barbed elastic limiting structure on the clamping surface of the jaws, the paper can smoothly enter the clamping area in the insertion direction with the help of elasticity, while being effectively blocked when moving in the reverse direction, which significantly improves the paper's anti-backflow capability. 2. The elastic limiting structure can undergo recoverable elastic deformation during the clamping process, which not only avoids damage to the paper, but also maintains stable clamping performance during long-term use. 3. This structure can achieve the clamping effect of "easy insertion in the forward direction and restricted in the reverse direction" without complicated transmission or additional operation, which helps to improve the convenience of one-handed operation and the overall user experience.

[0010] According to one embodiment of the present invention, the elastic limiting structure includes a first elastic barb, which includes a base plate and a plurality of barb bodies extending obliquely from the surface of the base plate. The plurality of barb bodies are spaced apart along the paper insertion direction, and the base plate is disposed on an upper clamping plate or a lower clamping plate. By setting multiple barb bodies and distributing them along the insertion direction, multi-point limiting can be formed in the paper length direction, thereby improving the overall stability of paper clamping. The base plate and the barb bodies can be formed by an integral molding process.

[0011] According to one embodiment of the present invention, the upper or lower clamping plate is formed with a mounting groove, and the base plate of the first elastic barb is disposed in the mounting groove, wherein the height of the base plate is less than the height of the side wall of the mounting groove. By limiting and protecting the elastic barb through the mounting groove, the first elastic barb can be prevented from shifting or falling off under force, thereby improving structural reliability and service life.

[0012] According to one embodiment of the present invention, the elastic limiting structure further includes a second elastic barb, which is disposed on the clamping surface opposite to the first elastic barb, and a plurality of barb bodies are formed at intervals along the paper insertion direction. By providing elastic barbs on both sides of the jaws, the paper can be clamped on both sides, making the force on the paper more uniform in the clamping area and further enhancing the anti-backflow effect.

[0013] According to one embodiment of the present invention, in the first elastic barb and / or the second elastic barb, the cross-sectional area at the root of each barb body is larger than the cross-sectional area at its free end. This structure is beneficial for improving the strength and fatigue resistance of the barb root, while ensuring sufficient flexibility at the free end to balance elastic clearance capability and structural reliability.

[0014] According to one embodiment of the present invention, the base plate of the second elastic barb is disposed within the mounting groove formed by the lower clamping plate or the upper clamping plate, and the height of the base plate is less than the height of the side wall of the mounting groove. By employing the same embedded mounting method for the second elastic barb, consistency of the barb structures on both sides can be achieved, which is beneficial for assembly and overall stability control.

[0015] According to one embodiment of the present invention, the free end of the elastic limiting structure has a flat end face, the narrow side of which is aligned with the paper insertion direction, and the wide side of which is aligned with the paper lateral movement direction, wherein the paper insertion direction and the paper lateral movement direction are perpendicular to each other. This structure results in less resistance to the barbs in the insertion direction and greater resistance in the extraction direction, while providing a larger contact area in the lateral direction and allowing the paper to be moved out by lateral movement.

[0016] According to one embodiment of the present invention, the free end is provided with serrated reverse teeth to restrict the paper from moving laterally in one direction, while allowing the paper to move laterally in the opposite direction. By providing serrated reverse teeth, a unidirectional limiting function can be formed in the lateral direction, so that the paper can only move laterally in one direction.

[0017] According to one embodiment of the present invention, when the jaws are in the open position, the clamping surface of the upper clamp is parallel to the paper surface.

[0018] According to one embodiment of the present invention, a folder board is provided, which includes the above-described clamping mechanism, wherein the lower clamping plate is composed of a writing plate and together with the upper clamping plate forms a jaw for clamping paper. By directly integrating the clamping mechanism into the folder board, reliable clamping can be achieved while maintaining a simple structure, making it suitable for various usage scenarios such as writing and reading. Attached Figure Description

[0019] 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 these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the folder board in an embodiment of the present invention.

[0021] Figure 2This is a front view of the folder board in an embodiment of the present invention.

[0022] Figure 3 for Figure 2 Sectional view at point AA.

[0023] Figure 4 for Figure 3 A magnified view of a section of the folder.

[0024] Figure 5 This is a perspective view of the first elastic barb in an embodiment of the present invention.

[0025] Figure 6 This is an exploded view of the folder board in an embodiment of the present invention.

[0026] Figure 7 This is a perspective view of the writing board in an embodiment of the present invention.

[0027] Figure 8 This is a perspective view of the upper clamping plate in an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of various barb bodies in embodiments of the present invention.

[0029] Explanation of the labels in the diagram: 1. Writing board; 2. Upper clamp; 3. First elastic barb; 4. Second elastic barb; 5. Elastic component; 11. Pen clamping part; 12. First clamping part; 13. Axle seat; 12a, First guide surface; 12b, First mounting groove; 12c, Stop protrusion; 21. Second clamping part; 22. Rotating shaft; 21a. Second guide surface; 21b. Second mounting slot; 31. Base plate; 32. Barbed body; 32a, Free end; 32b, Root; 32c, Back tooth. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In this embodiment, the barb refers to the barb body 32 being inclined along its own length direction. The barb has a certain axial length. When the paper is subjected to shear force in one direction, the barb body 32 can be elastically bent in its inclined direction, thereby allowing a certain degree of clearance in that direction. When the paper is subjected to shear force in the opposite direction, the tip of the barb abuts against and embeds into the paper surface, causing the barb to deform in the length direction to absorb and disperse the force generated when the paper is pulled out, thereby improving the unidirectional blocking and clamping effect on the paper.

[0032] Furthermore, the inverted teeth 32c refer to a multi-row parallel toothed groove structure, with each toothed groove being independent of the others, and the tooth surface having a right-angled or nearly right-angled groove shape. When the paper moves relative to the surface of the inverted teeth 32c, the edge of the paper engages with the tooth ends, significantly increasing the frictional force at the contact interface, thereby achieving the limiting and anti-slip function of the paper through the toothed groove structure.

[0033] Furthermore, the barbs and the 32c reverse teeth differ significantly in their structural form and force mechanism: the barbs are single-unit structures with elastic deformation capability along their length, primarily relying on their own bending deformation and tip abutment to achieve unidirectional clamping and cushioning of the paper; while the 32c reverse teeth are multi-row arrayed tooth groove structures, whose bodies typically do not undergo significant elastic deformation, mainly achieving paper restraint through mechanical interlocking and increased friction between the tooth tips and the paper. Thus, the barbs emphasize elastic yielding and energy absorption, while the 32c reverse teeth emphasize rigid restraint and enhanced friction. Example

[0034] like Figure 1-9 As shown, this embodiment discloses a clamping mechanism, which includes an upper clamping plate 2 and a lower clamping plate that are rotatably disposed relative to each other. The upper clamping plate 2 and the lower clamping plate are connected by an elastic hinge, thereby forming an openable and closable jaw structure between them. The elastic hinge is used to drive the upper clamping plate 2 to rotate relative to the lower clamping plate under the action of an external force, so that the jaws are in an open state, and after the external force is released, the jaws automatically return to the closed state by relying on the elastic restoring force. The following descriptions of the structural orientation and direction are all based on the state when the clamping mechanism is in normal use and the paper is inserted along the jaw insertion direction.

[0035] like Figure 6-8As shown, in this embodiment, the upper clamping plate 2 is provided with a rotating shaft 22, and the lower clamping plate is provided with a bearing seat 13. The rotating shaft 22 and the bearing seat 13 cooperate with each other and are rotatably connected, thereby defining the axis of rotation between the upper clamping plate 2 and the lower clamping plate. Furthermore, an elastic element 5 is provided between the upper clamping plate 2 and the lower clamping plate. In the assembled state, the elastic element 5 has an elastic tendency to keep the jaws closed, so as to apply a restoring force to the upper clamping plate 2 when no external force is applied. The elastic element 5 is preferably a torsion spring or a non-circular spring, and its material and specific structural form adopt existing conventional structures.

[0036] Furthermore, such as Figure 3-4 As shown, clamping surfaces are formed on both sides of the jaws, and the two clamping surfaces are located on the surfaces of the upper clamping plate 2 and the lower clamping plate facing each other. In this embodiment, a first clamping portion 12 protruding upward is formed on the clamping surface of the lower clamping plate, and a second clamping portion 21 protruding downward is formed on the clamping surface of the upper clamping plate 2. A first mounting groove 12b is recessed on the first clamping portion 12, and a second mounting groove 21b is recessed on the second clamping portion 21. A first guide surface 12a is provided on the edge of the first clamping portion 12, and the first guide surface 12a is inclined; correspondingly, a second guide surface 21a is provided on the edge of the second clamping portion 21, and the second guide surface 21a is also inclined. The first guide surface 12a and the second guide surface 21a are located at the entrance edge of the jaws and are used to guide the edge of the paper during the paper insertion process, guiding the paper into the paper receiving space with elastic clearance capability.

[0037] Furthermore, such as Figure 4 As shown, at least one clamping surface of the jaws is provided with elastic limiting structures distributed along the paper insertion direction. The paper insertion direction refers to the direction in which the paper moves from the outside of the jaws to the inside of the jaws. The elastic limiting structure is generally barbed, with its free end 32a inclined away from the jaws, so that the elastic limiting structure forms a unidirectional guiding and reverse blocking structure relative to the clamping surface.

[0038] In some embodiments, an elastic limiting structure is provided only on one of the upper clamping plate 2 or the lower clamping plate; however, in this embodiment, elastic limiting structures are provided on the clamping surfaces of both the upper clamping plate 2 and the lower clamping plate. When the jaws are closed, the elastic limiting structure cooperates with the clamping surface on the other side of the jaws, or with a corresponding elastic limiting structure provided on that clamping surface, to form a paper-accommodating space within the clamping area inside the jaws. The paper-accommodating space can elastically change under stress, thereby having elastic clearance capability to adapt to the insertion and clamping of papers of different thicknesses.

[0039] Furthermore, in this embodiment, the upper clamping plate 2 and the lower clamping plate have sufficient structural strength, and their materials can be metal, rigid engineering plastics, or wood. The metal is preferably aluminum alloy, and the engineering plastics may include PP, PC, PA, PET, rigid PVC, etc. The elastic limiting structure has a certain degree of toughness and resilience, and its material is preferably a soft plastic material, such as silicone, rubber, TPU, TPE, or soft PVC. In this embodiment, the elastic limiting structure uses silicone.

[0040] When the jaws are closed, if the clamping surfaces of the upper clamping plate 2 and the lower clamping plate are in direct rigid contact, it will restrict the insertion of paper. Therefore, in this embodiment, the clamping surfaces of the upper clamping plate 2 and the lower clamping plate form a soft contact relationship through an elastic limiting structure. When the jaws are closed, the elastic limiting structures provided on the clamping surfaces on both sides abut against each other. During paper insertion, the barb body 32 undergoes elastic deformation along its own length direction, and its free end 32a bends in the inclined direction, increasing the gap between the two barb bodies 32, thereby allowing the paper to enter the jaws. When the paper is pulled out in the reverse direction, the free ends 32a of the multiple barb bodies 32 form contact with the paper surface, and the barb bodies 32 deform along their length direction to absorb part of the pull-out force, while providing reverse shear resistance to the paper, thereby restricting the paper from moving out of the jaws.

[0041] Furthermore, when the paper enters the jaws along the insertion direction, the edge of the paper contacts the elastic limiting structure and applies pressure to it, causing the elastic limiting structure to undergo elastic deformation along its inclined direction, so as to allow the paper to smoothly enter the paper receiving space; when the paper moves in the opposite direction to the insertion direction, the free end 32a of the elastic limiting structure forms a blocking relationship with the paper, thereby blocking the paper and realizing the anti-reverse clamping of the paper.

[0042] Specifically, such as Figure 5 As shown, the elastic limiting structure includes a first elastic barb 3. The first elastic barb 3 includes a base plate 31 and a plurality of barb bodies 32 extending obliquely from the surface of the base plate 31. The base plate 31 is bonded to the clamping surface of the lower clamping plate or the upper clamping plate 2. The plurality of barb bodies 32 are spaced apart along the paper insertion direction, so that the paper contacts the plurality of barb bodies 32 sequentially during insertion, thereby achieving segmented elastic clearance and blocking. The base plate 31 is disposed on the upper clamping plate 2 or the lower clamping plate and is used to provide overall support and fixation for the plurality of barb bodies 32.

[0043] Furthermore, such as Figure 4As shown, a first mounting groove 12b is formed on the lower clamping plate, and the base plate 31 of the first elastic barb 3 is disposed in the first mounting groove 12b. The height of the base plate 31 is less than the height of the side wall of the first mounting groove 12b, so that the barb body 32 is limited and protected by the side wall of the first mounting groove 12b when elastic deformation occurs, thus preventing the barb body 32 from excessively deflecting or detaching.

[0044] Similarly, the elastic limiting structure also includes a second elastic barb 4, which is disposed on the clamping surface opposite to the first elastic barb 3, and forms multiple barb bodies 32 at intervals along the paper insertion direction. By the relative arrangement of the first elastic barb 3 and the second elastic barb 4 on both sides of the jaws, the paper is elastically limited on both sides within the jaws, thereby improving clamping stability.

[0045] Furthermore, in the first elastic barb 3 and the second elastic barb 4, the cross-sectional area of ​​the root 32b of each barb body 32 is larger than the cross-sectional area of ​​its free end 32a, causing the barb body 32 to gradually narrow from the root 32b to the free end 32a. This ensures the blocking effect of the free end 32a while improving the overall elastic deformation capacity and durability. The base plate 31 of the second elastic barb 4 is disposed in the second mounting groove 21b formed by the upper clamping plate 2, and the height of the base plate 31 is less than the height of the side wall of the second mounting groove 21b. Its structural form corresponds to the installation method of the first elastic barb 3.

[0046] Specifically, such as Figure 5 As shown, the free end 32a of the elastic limiting structure has a flat end face. The narrow side of the end face is aligned with the paper insertion direction, and the wide side of the end face is aligned with the paper lateral movement direction. The paper insertion direction and the paper lateral movement direction are perpendicular to each other, so that the free end 32a exhibits different limiting characteristics under different force directions.

[0047] Furthermore, such as Figure 9 As shown, the free end 32a has various shapes, including flat, curved, inclined and serrated teeth 32c. The teeth 32c are used to restrict the paper from moving out in one lateral direction when the paper moves in one lateral direction, and allow the paper to move out when the paper moves in the opposite lateral direction, thereby forming a directional limiting effect on the paper in the lateral direction.

[0048] Furthermore, when the jaws are in the open position, the clamping surface of the upper clamp 2 is parallel to the paper surface, allowing the paper to be directly pushed into the jaws in a parallel direction, thus facilitating the user to insert and position the paper with one hand.

[0049] In another embodiment, a file folder board is disclosed, including the aforementioned clamping mechanism. The lower clamping plate is composed of a writing board 1, and together with the upper clamping plate 2, forms a jaw structure for clamping paper. By integrating the clamping mechanism onto the writing board 1, the paper is positioned, clamped, and prevented from retracting. Fifteen standard A4 sheets of paper are inserted into the jaws along the paper insertion direction, and the writing board 1 is placed vertically. In this state, the fifteen standard A4 sheets remain stable within the jaws without significant displacement.

[0050] Furthermore, in another embodiment, the writing board 1 has a pen clamping part 11 on its surface. The pen clamping part 11 adopts a spring clip structure, which cooperates with the surface of the writing board 1 to clamp the writing tool. A stop protrusion 12c is provided on one side of the first clamping part 12. The stop protrusion 12c is located on the side of the first mounting groove 12b away from the jaws. It is used to abut against the insertion end of the paper after the paper is inserted into place, thereby restricting the paper from moving further inward, and playing the role of insertion limit and stop.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A clamping mechanism comprising an upper clamping plate (2) and a lower clamping plate capable of relative rotation, the upper clamping plate (2) and the lower clamping plate forming an openable and closable jaw through elastic hinging, characterized in that: at least one side of the jaw is provided with elastic limiting structures distributed along the paper insertion direction, the elastic limiting structures are barb-shaped, and the free ends (32a) thereof are obliquely arranged towards the direction away from the jaw; when the jaw is closed, the elastic limiting structures cooperate with the clamping surface of the other side of the jaw or corresponding elastic limiting structures to form a paper accommodating space with elastic accommodation capacity in the clamping area; when the paper enters the jaw along the insertion direction, the elastic limiting structures are elastically deformed by the extrusion of the paper to allow the paper to enter, and when the paper moves in the opposite direction, the free ends (32a) of the elastic limiting structures form a blocking effect on the paper, thereby realizing the anti-backup clamping of the paper. The elastic limiting structures comprise first elastic barbs (3), the first elastic barbs (3) comprising a bottom plate (31) and a plurality of barb bodies (32) obliquely extending from the surface of the bottom plate (31), the plurality of barb bodies (32) being arranged in intervals along the paper insertion direction, and the bottom plate (31) being arranged on the upper clamping plate (2) or the lower clamping plate. The upper clamping plate (2) or the lower clamping plate is formed with a mounting groove, the bottom plate (31) of the first elastic barb (3) is arranged in the mounting groove, and the height of the bottom plate (31) is less than the height of the side wall of the mounting groove. The elastic limiting structures further comprise second elastic barbs (4), the second elastic barbs (4) being arranged on the clamping surface opposite to the first elastic barbs (3) and forming a plurality of barb bodies (32) in intervals along the paper insertion direction.

2. A clamping mechanism according to claim 1, wherein: In the first elastic barbs (3) and / or the second elastic barbs (4), the cross-sectional area of the root (32b) of each barb body (32) is greater than the cross-sectional area of the free end (32a) thereof.

3. A clamping mechanism according to claim 2, wherein: The bottom plate (31) of the second elastic barb (4) is arranged in the mounting groove formed by the lower clamping plate or the upper clamping plate (2), and the height of the bottom plate (31) is less than the height of the side wall of the mounting groove.

4. A clamping mechanism according to claim 2, wherein: The free end (32a) of the elastic limiting structure has a flat end face, the narrow edge direction of the end face is consistent with the paper insertion direction, the wide edge direction of the end face is consistent with the transverse movement direction of the paper, and the paper insertion direction and the transverse movement direction of the paper are perpendicular to each other.

5. A clamping mechanism according to claim 4, wherein: The free end (32a) is provided with sawtooth-shaped reverse teeth (32c) to limit the one-way transverse movement of the paper out and allow the reverse transverse movement of the paper out.

6. A clamping mechanism according to claim 4, wherein: When the jaw is in the open position, the clamping surface of the upper clamping plate (2) is parallel to the paper surface.

7. The clamping mechanism of claim 1, wherein: It comprises the clamping mechanism according to any one of claims 1-9, wherein the lower clamping plate is composed of a writing board (1) and cooperates with the upper clamping plate (2) to form a jaw for clamping paper.

8. A clamping mechanism according to claim 7, wherein: ​ 9. The clamping mechanism of claim 1, wherein: ​ 10. A file folder panel characterized by: ​

Images