Folding plate clamp

Abstract

The utility model relates to a folding type plate clamp which comprises a plate body and a clamping portion arranged on the plate body, the plate body comprises a limiting layer, a first plate body and a second plate body, the first plate body and the second plate body are arranged on the end face of the limiting layer, and a first limiting face formed on the limiting layer is matched with a second limiting face formed on the second plate body in a limiting mode. When the first plate body and the second plate body are in an outwards-turned and unfolded state, the second limiting surface can abut against the first limiting surface, so that the first plate body and the second plate body are always in an unfolded state under the action of gravity, and the phenomenon of automatic folding does not occur; the technical defect that in the prior art, a fastening device needs to be additionally arranged for fixing so that normal use can be achieved is overcome, when small-size paper needs to be used for writing, only the second board body needs to be pressed above the first board body after being folded upwards and turned inwards, the second board body can be kept in a folded state all the time under the action of gravity, and use is convenient. Therefore, the plate clamp can be normally used without additionally arranging a fastening device when the plate clamp is in a folded state, the overall structure of the plate clamp is simplified, cost is reduced, and meanwhile switching and using of a user are greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of office appliances, in particular to a foldable board folder. Background Art

[0002] Clips, commonly known as binding clips, are binding materials and are widely used in offices. They are mainly used for the archive management of office documents. Such clips generally have a bottom plate and a clamping structure. Due to the limitations of the bottom plate structure, they generally do not have a folding function. The commonly used clips are generally large in size, so it is very inconvenient to carry when going out.

[0003] In order to solve this problem, some paper clips that can be simply folded for easy carrying have gradually appeared on the market. For example, the Chinese invention patent "Folding Paper Clip" with application number 201210529792.2 (application publication number CN219446556A) discloses such a structure, which includes a bottom plate and a clamping structure, the clamping structure is fixed to the upper end of the bottom plate, the bottom plate is composed of a support layer and a limiting layer, and the support layer includes at least two independent support plates. The limiting layer is made of a foldable material with ductility and fatigue resistance. Through the folding setting, the size of the paper clip is indeed reduced to a certain extent, which is convenient for carrying when going out to work. However, there is still a problem that there is no supporting relationship between the two support plates. Whether the support plates are in a folded state or an unfolded state, the two support plates cannot be fixed to each other. Its unfolded use state must be achieved under the action of external force, which affects its use.

[0004] In addition, the Chinese utility model patent "A foldable folder board and questionnaire board" with application number 201720692516.6 (authorization announcement number CN207630806U) also discloses a folding structure, which includes a first plate body, a second plate body, a fastening device and a clamping device. The first plate body is hinged to the second plate body, the clamping device is installed on the first plate body, a side of the first plate body away from the clamping device is provided with an accommodating space, the second plate body is selectively accommodated in the accommodating space, the abutting piece is sleeved on the rotating shaft and is rotatably connected to the rotating shaft, the rotating shaft is installed on the side of the first plate body away from the clamping device, and is fixedly connected to the first plate body. The first plate body and the second plate body that are hinged to each other and the fastening device installed on the first plate body are adopted, so it can be folded or straightened to place paper documents of different sizes, which is convenient to use, cost-saving and easy to carry, but there are still some problems: after the first plate body and the second plate body are hinged, whether in a folded state or an unfolded state, a special fastening device or a sliding piece needs to be additionally provided to fix the first plate body and the second plate body to each other before they can be used normally, which makes the overall structure of the plate clamp more complicated, increases the cost, and is also troublesome to use. When the plate clamp is unfolded and used normally, the sliding piece that plays a fixing role may even slide and cause the plate clamp in the unfolded state to automatically switch to the folded state, thereby affecting the normal use of the plate clamp.

[0005] Therefore, how to provide a board clamp with a simple structure, which does not require an additional locking device and can prevent the two unfolded boards from automatically folding during normal use and is easy to operate, is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a foldable board clamp which is simple in structure and easy to use, and can prevent two boards in an unfolded state from automatically folding during normal use without the need for an additional locking device.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: a foldable plate clamp, comprising a plate body and a clamping portion arranged on the plate body, the plate body comprising a limiting layer and a first plate body and a second plate body arranged on the end surface of the limiting layer, the first plate body and the second plate body can be spliced ​​with each other to form an unfolded state or relatively flipped to form a folded state;

[0008] A first splicing edge is formed at a joint between the first plate and the second plate, and a second splicing edge is formed at a joint between the second plate and the first plate. The limiting layer can be synchronously folded and sandwiched between the first plate and the second plate when the first plate and the second plate are in a folded state, and a crease formed on the limiting layer due to folding is located between the first splicing edge and the second splicing edge.

[0009] In the folded state, a first limiting surface is formed on the limiting layer in the area between the fold and the first splicing edge, and a second limiting surface is formed on the second plate body in the area between the fold and the second splicing edge. When the first plate body and the second plate body are in the unfolded state, the second limiting surface can resist the first limiting surface so that the first plate body and the second plate body are always protected in the unfolded state without the action of external force.

[0010] In order to achieve optimal mutual limiting ability of the first plate body and the second plate body when they are in an outwardly unfolded state, preferably, the second splicing edge of the second plate body is also formed with an outward protrusion for increasing the contact area of ​​the second limiting surface, and the first splicing edge of the first plate body is provided with a notch for increasing the contact area of ​​the first limiting surface, and when the first plate body and the second plate body are in the unfolded state, the protrusion can be fitted into the notch.

[0011] In order to enable the folded outer protrusion to be used as a handle, preferably, when the first plate body and the second plate body are in a folded state, the outer protrusion is flipped and convexly arranged at the lower end of the plate clip, and the outer protrusion is also provided with a through groove that penetrates the second plate body.

[0012] In order to facilitate carrying, the first plate body and the second plate body are intentionally made to be better fixed when they are in a folded state. Preferably, a fixing belt is also included, and both ends of the fixing belt are connected to the first plate body or the limiting layer in sequence. The fixing belt can fix the second plate body to the first plate body when the first plate body and the second plate body are in a folded state.

[0013] In order to prevent the fixing belt from interfering with normal writing of the board clip, preferably, the fixing belt is elastic and can be flipped to the back of the writing surface of the first board body or the second board body when the first board body or the second board body is in a writing state.

[0014] In order to make the writing surface smoother and flatter when the board clip is in an inwardly folded state, preferably, the clamping portion is arranged at the top of the front side of the first board body, and when the first board body and the second board body are in a folded state, the edge of the second board body opposite to the second splicing edge is located below the clamping portion and adjacent to the clamping portion.

[0015] In order to facilitate the mutual connection between the limiting layer and the first plate body and the second plate body, and at the same time enable the limiting layer to be folded better, preferably, the limiting layer is in the form of a thin sheet, the first plate body and the second plate body are both in the form of a plate, and the limiting layer is fixed together with the first plate body and the second plate body by ultrasonic welding, wherein the area involved by the first limiting surface and the second limiting surface is a non-fixed area.

[0016] In order to make the writing surface smoother and flatter when the board clip is in the outwardly unfolded state, preferably, when the first board body and the second board body are in the unfolded state, the four peripheral edges of the limiting layer are flush with the four peripheral edges of the first board body and the second board body after being spliced, and the clamping part is pressed on the limiting layer.

[0017] Compared with the prior art, the advantages of the utility model are: by setting a limiting layer and a first plate body and a second plate body that can be spliced ​​with each other to form an expanded state or relatively flipped to form a folded state, and by the limiting cooperation of the first limiting surface formed on the limiting layer and the second limiting surface formed on the second plate body, when the first plate body and the second plate body are in the outward-turned expanded state, the second limiting surface can resist the first limiting surface so that the first plate body and the second plate body are always protected in the expanded state under the action of gravity, and the automatic folding phenomenon will not occur, thereby avoiding the technical defects of the prior art that an additional fastening device needs to be set up to fix it for normal use. When it is necessary to use small-sized paper for writing, it is only necessary to fold the second plate body upwards and inwards and then press it on top of the first plate body. Similarly, under the action of gravity, the second plate body will always remain in the folded state, so that the board clamp can be used normally in the folded state without the need for an additional fastening device, thereby simplifying the overall structure of the board clamp, reducing costs, and also facilitating users to switch between large and small sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of this embodiment (the first plate body and the second plate body are in an unfolded state);

[0019] Figure 2 It is a three-dimensional structural diagram of this embodiment (the first plate body and the second plate body are in a folded state);

[0020] Figure 3 for Figure 1 The back three-dimensional structure diagram of

[0021] Figure 4 for Figure 2 The back three-dimensional structure diagram of

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the embodiment in an exploded state;

[0023] Figure 6 This is a schematic diagram of the structure of writing on large-sized paper in this embodiment (where A refers to large-sized paper);

[0024] Figure 7 It is a schematic diagram of the structure of writing on small-sized paper in this embodiment (wherein B refers to small-sized paper). DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Figures 1 to 7 What is shown is a schematic diagram of this embodiment. The foldable board clamp in this embodiment mainly includes a board body 1, a clamping portion 2 and a limiting layer 3, etc.

[0027] refer to Figures 1 to 5 As shown, the clamping portion 2 is arranged on the front side of the plate body 1, and the clamping portion 2 is mainly used to clamp the document to be written. The plate body 1 includes a limiting layer 3 and a first plate body 1a and a second plate body 1b arranged on the end surface of the limiting layer 3. The first plate body 1a and the second plate body 1b can be spliced ​​with each other to form an unfolded state or relatively flipped to form a folded state; a first splicing edge 11 is formed at the splicing of the first plate body 1a with the second plate body 1b, and a second splicing edge 12 is formed at the splicing of the second plate body 1b with the first plate body 1a. The limiting layer 3 can be synchronously folded and clamped on the first plate body 1a and the second plate body 1b when the first plate body 1a and the second plate body 1b are in a folded state. The limiting layer 3 is provided between the first plate body 1a and the second plate body 1b, and the crease 3a formed on the limiting layer 3 due to folding is located between the first splicing edge 11 and the second splicing edge 12; in the folded state, a first limiting surface 3b is formed on the limiting layer 3 in the area between the crease 3a and the first splicing edge 11, and a second limiting surface 1b1 is formed on the second plate body 1b in the area between the crease 3a and the second splicing edge 12, and when the first plate body 1a and the second plate body 1b are in the unfolded state, the second limiting surface 1b1 can resist the first limiting surface 3b so that the first plate body 1a and the second plate body 1b are always protected in the unfolded state without the action of external force.

[0028] In order to optimize the mutual limiting ability of the first plate body 1a and the second plate body 1b in the unfolded state, in this embodiment, reference Figures 2 to 5 As shown, at the second splicing edge 12 of the second plate body 1b, an outer protrusion 1b2 is formed outward to increase the contact area of ​​the second limiting surface 1b1, and a notch 1a1 is provided at the first splicing edge 11 of the first plate body 1a to increase the contact area of ​​the first limiting surface 3b. When the first plate body 1a and the second plate body 1b are in the unfolded state, the outer protrusion 1b2 can be adapted in the notch 1a1. The coordinated setting of the outer protrusion 1b and the notch 1a1 can effectively increase the contact area between the first limiting surface 3b and the second limiting surface 1b1, thereby making the coordinated limiting energy between the first plate body 1a and the second plate body 1b more stable and reliable.

[0029] Secondly, in order to make the folded outer protrusion 1b also serve as a handle, refer to Figure 4As shown, in this embodiment, when the first plate body 1a and the second plate body 1b are in a folded state, the outer protrusion 1b2 can be flipped over and convexly arranged at the lower end of the board clip. At the same time, a through groove 1b3 penetrating the second plate body 1b is provided on the outer protrusion 1b2. When carrying the board clip outside, the board clip can be conveniently grasped by grasping the through groove 1b3 on the outer protrusion 1b2.

[0030] Also, in order to facilitate the board clip to carry when going out, refer to Figure 1 and Figure 2 As shown, in the present embodiment, a fixing belt 4 is specially provided, and the two ends of the fixing belt 4 are connected to the first plate body 1a or the limiting layer 3 in sequence. The fixing belt 4 can fix the second plate body 1b to the first plate body 1a when the first plate body 1a and the second plate body 1b are in a folded state. The fixing belt 4 shown in the figure is fixed to the limiting layer 3 and the first plate body 1a by setting fasteners.

[0031] At the same time, in order to prevent the fixing belt 4 from hindering the normal writing of the board folder, refer to Figure 6 and Figure 7 As shown, the fixing belt 4 in this embodiment has a certain elasticity, and the fixing belt 4 can be turned over to the back of the first board body 1a or the second board body 1b when the first board body 1a or the second board body 1b is in the writing state. Figure 6 The figure shows the writing state when the first plate body 1a and the second plate body are in the unfolded state, wherein A refers to large-size paper, such as A3 paper, etc. At this time, in order to prevent the fixing belt 4 from interfering with the normal writing of the large paper, the fixing belt 4 has the elasticity to flip the fixing belt 4 to the back of the writing surface.

[0032] Figure 7 The figure shows the writing state when the first plate body 1a and the second plate body are in a folded state, where B refers to a small-sized paper, such as A4 paper, etc. Similarly, in order to prevent the fixing belt 4 from hindering the normal writing of the small paper, the fixing belt 4 can also be turned to the back of the writing surface by virtue of its elasticity. It is also necessary to explain that the fixing belt 4 here is not used to fix the board clip when writing, but is used to bind the board clip when folding and carrying.

[0033] In this embodiment, in order to make the writing surface of the board folder in the folded state smoother and flatter, Figure 2 As shown, the clamping portion 2 is arranged at the top of the front side of the first plate body 1a. When the first plate body 1a and the second plate body 1b are in a folded state, the edge of the second plate body 1b opposite to the second splicing edge 12 is located below the clamping portion 2 and adjacent to the clamping portion 2.

[0034] In addition, in order to facilitate the fixed connection between the limiting layer 3 and the first plate body 1a and the second plate body 1b, and at the same time enable the limiting layer 3 to be quickly folded, refer to Figures 1 to 3 As shown, the limiting layer 3 in this embodiment is in the form of a thin sheet and can be made of plastic, such as PP, PE and other materials. The first plate body 1a and the second plate body 1b are both in the form of plates. The limiting layer 3 is fixed to the first plate body 1a and the second plate body 1b by ultrasonic welding. It needs to be additionally explained here that the area involved by the first limiting surface 3b and the second limiting surface 1b1 here is a non-fixed area and does not need to be welded and fixed. It is only necessary to weld and fix the area outside the first limiting surface 3b and the second limiting surface 1b1. For details, please refer to the welding points shown in the accompanying drawings, where the point shown by C is the boundary formed during welding.

[0035] In this embodiment, in order to make the writing on the board clip in the unfolded state smoother and flatter, and to achieve a certain aesthetic effect, reference Figure 1 As shown, when the first plate body 1a and the second plate body 1b are in the unfolded state, the four peripheral edges of the limiting layer 3 are flush with the four peripheral edges of the first plate body 1a and the second plate body 1b after being spliced, and the clamping part 2 is pressed on the limiting layer 3 and fixed to the first plate body 1a after passing through the limiting layer 3.

[0036] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A foldable plate clamp, comprising a plate body (1) and a clamping portion (2) provided on the plate body (1), characterized in that: The plate body (1) comprises a limiting layer (3) and a first plate body (1a) and a second plate body (1b) arranged on the end surface of the limiting layer (3); the first plate body (1a) and the second plate body (1b) can be spliced ​​together to form an unfolded state or flipped relative to each other to form a folded state; A first splicing edge (11) is formed at a splicing point between the first plate body (1a) and the second plate body (1b), and a second splicing edge (12) is formed at a splicing point between the second plate body (1b) and the first plate body (1a); the limiting layer (3) can be synchronously folded and sandwiched between the first plate body (1a) and the second plate body (1b) when the first plate body (1a) and the second plate body (1b) are in a folded state, and a fold (3a) formed on the limiting layer (3) due to folding is located between the first splicing edge (11) and the second splicing edge (12); In the folded state, a first limiting surface (3b) is formed on the limiting layer (3) in the area between the fold (3a) and the first splicing edge (11), and a second limiting surface (1b1) is formed on the second plate body (1b) in the area between the fold (3a) and the second splicing edge (12); when the first plate body (1a) and the second plate body (1b) are in the unfolded state, the second limiting surface (1b1) can abut against the first limiting surface (3b) so that the first plate body (1a) and the second plate body (1b) are always protected in the unfolded state without the action of external force.

2. The foldable plate clamp according to claim 1, characterized in that: The second splicing edge (12) of the second plate body (1b) is also formed with an outwardly convex portion (1b2) for increasing the contact area of ​​the second limiting surface (1b1); the first splicing edge (11) of the first plate body (1a) is provided with a notch (1a1) for increasing the contact area of ​​the first limiting surface (3b); when the first plate body (1a) and the second plate body (1b) are in an unfolded state, the convex portion (1b2) can fit into the notch (1a1).

3. The foldable board clip according to claim 2, characterized in that: When the first plate body (1a) and the second plate body (1b) are in a folded state, the outer convex portion (1b2) is turned over and convexly arranged at the lower end of the plate clamp, and the outer convex portion (1b2) is also provided with a through groove (1b3) penetrating the second plate body (1b).

4. The foldable plate clamp according to any one of claims 1 to 3, characterized in that: It also includes a fixing belt (4), the two ends of which are connected to the first plate body (1a) or the limiting layer (3) in sequence, and the fixing belt (4) can fix the second plate body (1b) on the first plate body (1a) when the first plate body (1a) and the second plate body (1b) are in a folded state.

5. The foldable board clip according to claim 4, characterized in that: The fixing belt (4) is elastic and can be turned over to the back of the writing surface of the first board (1a) or the second board (1b) when the first board (1a) or the second board (1b) is in a writing state.

6. The foldable board clip according to claim 1, characterized in that: The clamping portion (2) is arranged at the top of the front side of the first plate body (1a); when the first plate body (1a) and the second plate body (1b) are in a folded state, the edge of the second plate body (1b) opposite to the second splicing edge (12) is located below the clamping portion (2) and is adjacent to the clamping portion (2).

7. The foldable board clip according to claim 4, characterized in that: The limiting layer (3) is in the form of a thin sheet, the first plate body (1a) and the second plate body (1b) are both in the form of plates, the limiting layer (3) is fixed to the first plate body (1a) and the second plate body (1b) by ultrasonic welding, wherein the area involved by the first limiting surface (3b) and the second limiting surface (1b1) is a non-fixed area.

8. The foldable board clip according to claim 1, characterized in that: When the first plate body (1a) and the second plate body (1b) are in an unfolded state, the four peripheral edges of the limiting layer (3) are flush with the four peripheral edges of the first plate body (1a) and the second plate body (1b) after being spliced, and the clamping portion (2) is pressed onto the limiting layer (3).

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