Circuit board convenient to store

Abstract

The utility model discloses a circuit board convenient to store, which belongs to the field of circuit boards, and comprises a storage rack and a circuit board, the circuit board comprises a main board, a protective edge, a protective corner and a separation groove, and the circuit board with the protective edge and the protective corner on the side edge is arranged, so that the circuit board cannot be abraded by the side edge in the storage or transportation process, and the subsequent normal use is not influenced. The protective edges, the protective corners and the main plate body are connected through separation grooves, gaps are reserved between the protective corners and the main plate body, and the protective corners and the separation grooves of the protective edges incline towards the protective edges from inside to outside, so that in the taking or storing process, even if the protective edge on one side is stressed to be connected with the protective corners, other protective edges are stressed together, the stressed degree of the protective edges is increased, and the safety of taking or storing is improved. Meanwhile, during separation, only the protective corner needs to be broken off firstly, then the protective edge needs to be broken off, convenience and rapidness are achieved, and the convenience of dismounting the protective edge and the protective corner is not affected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of circuit board, in particular to a circuit board convenient to store. BACKGROUND

[0002] Circuit board is divided into single -sided board, double -sided board and multilayer circuit board three big classification according to layer, single -sided board, it is for the wire only appears in one side PCB board, double -sided board is that both sides have the copper and have the wiring, and can pass through the via to make the circuit between two layers, make it form the network connection required, multilayer board refers to the conductive pattern layer with three or more above and the insulating material with the interval laminated, and its conductive pattern is interconnected according to the requirement printed board, circuit board is divided into soft board, hard board and soft and hard combination board according to the characteristics, but the prior art in use, circuit board is stored and transported, and the side is easy to wear and tear, so as to cause subsequent circuit board failure, cause the inconvenience, and the prior art in use, circuit board is stored, and fixed frame is used, and the frame structure is relatively fixed, and the space occupancy rate is high, especially the placement of empty frame is relatively inconvenient. CONTENT OF THE UTILITY MODEL

[0003] (1) the technical problem to be solved

[0004] In order to overcome the prior art, a circuit board convenient to store is provided to solve the problem that the side of the circuit board is easy to wear and tear during storage and transportation, causing subsequent circuit board failure and inconvenience in use of the prior art.

[0005] Secondly, to solve the problem that the circuit board is stored in a fixed frame, the frame structure is relatively fixed, the space occupancy rate is high, and the placement of the empty frame is relatively inconvenient in use of the prior art.

[0006] (2) technical scheme

[0007] The utility model discloses a circuit board convenient to store, which comprises a storage rack and a circuit board, and the circuit board is assembled in the storage rack.

[0008] The circuit board comprises a main board, a side guard, a corner guard and a separation groove, the side of the main board is provided with a side guard, every two side guards are connected through a corner guard, the corner guard is matched with the corner of the main board, the connection between the side guard and the main board is provided with a separation groove, the connection between the corner guard and the side guard is also provided with a separation groove, the separation groove is a right-angled triangle groove, the slope of the separation groove between the side guard and the main board is arranged towards the side guard, the slope of the separation groove between the side guard and the corner guard is arranged towards the corner guard, the separation groove between the side guard and the corner guard is inclined from inside to outside towards the side guard, and the innermost side of the separation groove between the side guard and the corner guard is located in the range of the side of the main board.

[0009] Further, the storage rack comprises support rods, limiting structures, assembling rods, first end blocks, locking knobs, assembling blocks and second end blocks, the first end blocks and the second end blocks are each provided with four blocks, one end of the second end block is fixed with an assembling rod, the first end block and the assembling block are each slidably sleeved on the assembling rod, the assembling block is provided with multiple blocks and is arranged between the first end block and the second end block, the support rods are provided with four rods, two ends of two of the support rods are each fixed with a first end block, and two ends of the remaining two support rods are each fixed with a second end block, the support rods are arranged perpendicularly to the assembling rods, the two support rods each fixed with the first end block are connected through the limiting structures, the two support rods each fixed with the second end block are also connected through the limiting structures, the locking knob is used for locking the position of the first end block on the assembling rod, and the main plate is assembled between the assembling blocks of the assembling rods through the edge guards and the corner guards.

[0010] Further, the first end block and the assembling block are not rotatable relative to the assembling rod.

[0011] Further, the assembling block comprises limiting blocks, hinge joints, hinge seats, assembling rings, first limiting grooves and second limiting grooves, the assembling ring is slidably sleeved on the assembling rod, the hinge seat is fixed adjacent to the circuit board side of the assembling ring, one end of the limiting block is fixedly connected with the hinge joint, the limiting block is hingedly assembled on the hinge seat through the hinge joint, the limiting block is provided with the first limiting groove or the second limiting groove away from the hinge joint side, the first limiting groove is a slot opening penetrating through the limiting block at both ends and away from the hinge joint side, the second limiting groove is a slot opening penetrating through the limiting block adjacent to the first limiting groove side and away from the hinge joint side, the limiting block located at the line plate insertion entrance is provided with the first limiting groove, and the limiting block located at the end of the line plate insertion is provided with the first limiting groove.

[0012] Further, the depth of the first limiting groove and the second limiting groove away from the hinge joint side is less than the width of the edge guard.

[0013] Further, the width of the limiting block is less than the width of the assembling ring.

[0014] Further, the limiting structure comprises a receiving groove, a receiving cylinder, a protective band, a limiting assembly ring, a positioning ring, a first butt joint, a second butt joint, a butt joint pin, a locking cover, a switching groove, a locking butt joint groove, a sleeve assembly ring, a locking sleeve, and a torsion spring, the receiving cylinder is provided with two, the receiving cylinder is sleeved on the limiting assembly ring, the inner ring end of the limiting assembly ring is fixed with the positioning ring, the limiting assembly ring is sleeved on the support rod through the positioning ring, the receiving groove is formed between the outer ring end of the limiting assembly ring and the receiving cylinder, one end of the protective band is fixedly connected with the limiting assembly ring, the protective band is wound on the limiting assembly ring and located in the receiving groove, the other end of the protective band of the two receiving cylinders penetrates through the receiving cylinder and is fixedly connected with the first butt joint or the second butt joint, the limiting assembly ring is further connected with the receiving cylinder through the torsion spring on the upper side and the lower side, the torsion spring is used for resetting after the receiving cylinder rotates relative to the limiting assembly ring, the locking cover is character-shaped and sleeved on the top of the receiving cylinder and cannot rotate relative to the receiving cylinder, the switching groove is left between the side edge of the locking cover and the receiving cylinder, the locking butt joint groove is arranged on the top of the receiving cylinder, the sleeve assembly ring is fixedly arranged in the middle of the bottom end of the locking cover, the locking sleeve is fixedly arranged in the sleeve assembly ring, the locking sleeve is used for rotating the limiting assembly ring relative to the receiving cylinder, the first butt joint is L-shaped, the butt joint pin is fixedly connected with the first butt joint, and the first butt joint is combined by being inserted into the second butt joint through the butt joint pin.

[0015] Further, the positioning ring and the locking sleeve are both rubber rings.

[0016] (Three) beneficial effects

[0017] One of the above technical solutions has the following advantages or beneficial effects:

[0018] 1) To solve the problem that the side edge of the circuit board is easily worn during storage and transportation in the prior art, thereby causing subsequent use failure of the circuit board and inconvenience, the circuit board with the side edge protection and the corner protection is provided, so that the circuit board will not be affected by the side edge wear during storage or transportation, and the subsequent normal use is not affected, the connection between the side edge protection and the corner protection and the main plate body is provided with a separation groove, a gap is left between the corner protection and the main plate body, and the separation groove of the side edge protection is inclined from inside to outside towards the side edge protection, so that even if one side of the side edge protection is forced to involve the corner protection during taking or storing, the other side edge protection is also forced, the force bearing degree of the side edge protection is increased, the side edge protection is easily separated, and the side edge protection and the corner protection are conveniently separated.

[0019] 2), for solving the prior art when using, the circuit board storage is more fixed frame, the frame structure is more fixed, the space occupancy is high, especially the empty frame and so on, it is inconvenient to place, through the frame two sides are equipped with the limiting structure through the protective band connection, the frame can be folded and stored when not assembling, reduce the space occupation, the limiting block of the assembly block for circuit board assembly adopts the form of hinged with the assembly ring, the circuit board bolt storage can be inclined and inserted, realize the assembly and use of different size circuit board, also facilitate the inclined placement of the frame, the assembly ring also adopts the assembly form of sleeving on the assembly rod, the end adopts the first end block locking, convenient for the replacement and increase and decrease of the assembly ring, at the same time, the protective band of limiting structure adopts the form of winding, convenient for extension or winding to control the width of the frame, further facilitate the storage and use of different size circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0021] Figure 1 It is a structure schematic view of the circuit board convenient to store of the utility model;

[0022] Figure 2 It is the utility model Figure 1 It is the enlarged structure schematic view of A;

[0023] Figure 3 It is the utility model Figure 1 It is the enlarged structure schematic view of B;

[0024] Figure 4 It is the structure schematic view of the circuit board front view of the utility model;

[0025] Figure 5 It is the sectional structure schematic view of the circuit board side view of the utility model;

[0026] Figure 6 It is the utility model Figure 5 It is the enlarged structure schematic view of C;

[0027] Figure 7 It is the sectional structure schematic view of the limiting structure of the utility model;

[0028] Figure 8 It is the utility model Figure 7 It is the enlarged structure schematic view of D;

[0029] In the diagram: Storage rack - 1, Circuit board - 2, Support rod - 1a, Limiting structure - 1b, Assembly rod - 1c, First end block - 1d, Locking knob - 1e, Assembly block - 1f, Second end block - 1g, Main board - 2a, Edge protector - 2b, Corner protector - 2c, Separation groove - 2d, Storage groove - 1b1, Storage tube - 1b2, Protective strap - 1b3, Limiting assembly ring - 1b4, Positioning ring - 1b5, First connector - 1b6, Second connector - 1b7, Connecting pin - 1b8, Locking cover - 1b9, Switching groove - 1b10, Locking connecting groove - 1b11, Collar assembly ring - 1b12, Locking collar - 1b13, Torsion spring - 1b14, Limiting block - 1f1, Hinge joint - 1f2, Hinge seat - 1f3, Assembly ring - 1f4, First limiting groove - 1f5, Second limiting groove - 1f6. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0031] This utility model provides a circuit board that is easy to store: its structure includes a storage rack 1 and a circuit board 2, wherein the circuit board 2 is fitted with a pin inside the storage rack 1;

[0032] The circuit board 2 includes a main board 2a, edge protectors 2b, corner protectors 2c, and separation grooves 2d. Each side of the main board 2a is provided with an edge protector 2b, and every two edge protectors 2b are connected by corner protectors 2c. The corner protectors 2c are clearance-fitted with the corners of the main board 2a. A separation groove 2d is provided at the connection between the edge protector 2b and the main board 2a, and a separation groove 2d is also provided at the connection between the corner protector 2c and the edge protector 2b. The separation groove 2d is a right-angled triangular groove. The inclined surface of the separation groove 2d between the edge protector 2b and the main board 2a faces the edge protector 2b. The inclined surface of the separation groove 2d between the edge protector 2b and the corner protector 2c faces the corner protector 2c. The separation groove 2d between the edge protector 2b and the corner protector 2c is inclined from the inside out towards the edge protector 2b. The innermost part of the separation groove 2d between the edge protector 2b and the corner protector 2c is located within the side range of the main board 2a.

[0033] The storage rack 1 comprises a supporting rod 1a, a limiting structure 1b, an assembling rod 1c, a first end block 1d, a locking knob 1e, an assembling block 1f and a second end block 1g, the first end block 1d and the second end block 1g are both provided with four blocks, one end of the second end block 1g is fixedly connected with the assembling rod 1c, the first end block 1d and the assembling block 1f are both slidably sleeved on the assembling rod 1c, the assembling block 1f is provided with a plurality of blocks and is arranged between the first end block 1d and the second end block 1g, the supporting rod 1a is provided with four rods, two ends of two of the supporting rods 1a are both fixedly connected with the first end block 1d, and the remaining two of the supporting rods 1a are both fixedly connected with the second end block 1g, the supporting rod 1a is arranged perpendicularly to the assembling rod 1c, the two supporting rods 1a fixedly connected with the first end block 1d are connected through the limiting structure 1b, and the two supporting rods 1a fixedly connected with the second end block 1g are also connected through the limiting structure 1b, the locking knob 1e is used for locking the position of the first end block 1d on the assembling rod 1c, and the main plate 2a is assembled between the assembling blocks 1f of the assembling rods 1c through the edge guard 2b and the corner guard 2c.

[0034] The first end block 1d and the assembling block 1f are not rotatable relative to the assembling rod 1c.

[0035] The assembling block 1f comprises a limiting block 1f1, a hinge joint 1f2, a hinge seat 1f3, an assembling ring 1f4, a first limiting groove 1f5 and a second limiting groove 1f6, the assembling ring 1f4 is slidably sleeved on the assembling rod 1c, the hinge seat 1f3 is fixedly connected to the assembling ring 1f4 adjacent to the circuit board 2, one end of the limiting block 1f1 is fixedly connected with the hinge joint 1f2, the limiting block 1f1 is hingedly connected to the hinge seat 1f3 through the hinge joint 1f2, the limiting block 1f1 is provided with the first limiting groove 1f5 or the second limiting groove 1f6 away from the hinge joint 1f2, the first limiting groove 1f5 is a slot opening penetrating through the limiting block 1f1 at both ends and away from the hinge joint 1f2, the second limiting groove 1f6 is a slot opening penetrating through the limiting block 1f1 adjacent to the first limiting groove 1f5 and away from the hinge joint 1f2, the limiting block 1f1 located at the insertion entrance of the circuit board 2 is provided with the first limiting groove 1f5, and the limiting block 1f1 located at the end of the circuit board 2 is provided with the first limiting groove 1f5.

[0036] The depth of the first limiting groove 1f5 and the second limiting groove 1f6 away from the hinge joint 1f2 is less than the width of the edge guard 2b.

[0037] The width of the limiting block 1f1 is less than the width of the assembling ring 1f4.

[0038] The limiting structure 1b comprises a receiving groove 1b1, a receiving cylinder 1b2, a protective band 1b3, a limiting assembly ring 1b4, a positioning ring 1b5, a first butt joint 1b6, a second butt joint 1b7, a butt joint pin 1b8, a locking cover 1b9, a switching groove 1b10, a locking butt joint groove 1b11, a sleeve assembly ring 1b12, a locking sleeve 1b13 and a torsional spring 1b14, the receiving cylinder 1b2 is provided with two, the receiving cylinder 1b2 is sleeved on the limiting assembly ring 1b4, the inner ring end of the limiting assembly ring 1b4 is fixed with the positioning ring 1b5, the limiting assembly ring 1b4 is positioned and sleeved on the supporting rod 1a through the positioning ring 1b5, the receiving groove 1b1 is formed between the outer ring end of the limiting assembly ring 1b4 and the receiving cylinder 1b2, one end of the protective band 1b3 is fixedly connected with the limiting assembly ring 1b4, the protective band 1b3 is wound on the limiting assembly ring 1b4 and located in the receiving groove 1b1, the other end of the protective band 1b3 of the two receiving cylinders 1b2 penetrates through the receiving cylinder 1b2 and is fixedly connected with the first butt joint 1b6 or the second butt joint 1b7, respectively, the limiting assembly ring 1b4 is further connected with the receiving cylinder 1b2 through the torsional spring 1b14 on the upper and lower sides, the torsional spring 1b14 is used for resetting after the receiving cylinder 1b2 rotates relative to the limiting assembly ring 1b4, the locking cover 1b9 is C-shaped and assembled on the top of the receiving cylinder 1b2 and cannot rotate relative to the receiving cylinder 1b2, the switching groove 1b10 is left between the side edge of the locking cover 1b9 and the receiving cylinder 1b2, the locking butt joint groove 1b11 is arranged on the top of the receiving cylinder 1b2, the sleeve assembly ring 1b12 is fixedly arranged in the bottom end of the locking cover 1b9, the locking sleeve 1b13 is fixedly arranged in the sleeve assembly ring 1b12, the locking sleeve 1b13 is used for rotating the limiting assembly ring 1b4 relative to the receiving cylinder 1b2, the first butt joint 1b6 is L-shaped, the butt joint pin 1b8 is fixedly connected with the first butt joint 1b6, and the first butt joint 1b6 is combined by being inserted into the second butt joint 1b7 through the butt joint pin 1b8.

[0039] The positioning ring 1b5 and the locking sleeve 1b13 are both rubber rings.

[0040] In use, when one of the edges 2b of the circuit board 2 is stressed, the edge 2b is not easy to break directly due to the separation groove 2d structure of the inner wide and outer small, and the other edges 2b are stressed by the involvement of the corner 2c, reducing the protection of the edges 2b when the circuit board 2 is stored. When the main board 2a of the circuit board 2 needs to be removed for use, the corner 2c is removed first, and then the edge 2b is removed. When the corner 2c is removed, a gap is left between the corner 2c and the main board 2a, which does not affect the main board 2a. Because the separation groove 2d at the connection between the corner 2c and the edge 2b is of the outer large and inner small structure and the stress direction is the same, it is easy to remove the corner 2c. At the same time, the separation groove 2d adopts a right triangle structure, and the side of the main board 2a retains a straight edge structure, reducing the force acting on the main board 2a when removing, avoiding the easy separation of the edge 2b when stressed, and facilitating the removal of the edge 2b and the corner 2c.

[0041] In use, two edges of the storage rack 1 are connected by a limiting structure 1b. The limiting structure 1b is composed of two storage barrels 1b2 with retractable belts 1b3. In use, the locking cover 1b9 is pulled upward to make the locking ring 1b13 separate from the limiting assembly ring 1b4, and then the belt 1b3 is pulled to adjust and expand. After adjusting the distance of the belt 1b3, the locking cover 1b9 is pressed to make the locking ring 1b13 cover the limiting assembly ring 1b4 to limit the rotation of the limiting assembly ring 1b4. The folding or storage of the belt 1b3 can reduce the storage space of the empty storage rack 1. Because the storage belt 1b3 is adjustable, the storage rack 1 can adapt to different sizes of circuit boards 2. At the same time, the combination of the two storage barrels 1b2 with the belt 1b3 adopts the way of inserting the first and second connectors 1b6 and 1b7, which is convenient for disassembly or combination. The limiting assembly ring 1b4 assembled on the supporting rod 1a also adopts the friction positioning of the positioning ring 1b5, which is convenient for position adjustment.

[0042] When the circuit board 2 is assembled in the storage rack 1, the pin is assembled in the limiting block 1f1 of the assembly block 1f. Because the limiting block 1f1 is hinged to the hinge seat 1f3 of the assembly ring 1f4 by the hinge joint 1f2, the circuit board 2 can be assembled with inclined pin assembly. Combined with the side structure of the belt 1b3, the whole storage rack 1 can also be in an inclined assembly form, which is convenient for the storage rack 1 to adapt to the environment and further facilitate the storage of the circuit board 2. It can reduce the case of the fixed limiting block 1f1 pressing the side of the circuit board 2. The first end block 1d on one side of the storage rack 1 assembly rod 1c adopts the fastening form of the locking knob 1e, which is convenient for the adjustment and removal of the first end block 1d. Combined with the sleeve assembly form of the assembly ring 1f4, it is convenient for the replacement and increase or decrease of the assembly ring 1f4, which makes the equipment more practical and convenient for replacement and maintenance.

[0043] In the description of the utility model, it is necessary to explain, the term "upper", "lower", "left", "right" and so on indicate the position relation or location relation is based on the position or location relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the restriction of the utility model.

[0044] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as the restriction of the claim involved.

[0045] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A circuit board convenient to store, which structure comprises a storage rack (1) and a circuit board (2), the circuit board (2) is inserted into the storage rack (1) and is locked. characterized in that The circuit board (2) comprises a main board (2a), a side guard (2b), a corner guard (2c) and a separation groove (2d), the side edges of the main board (2a) are provided with the side guards (2b), the side guards (2b) are connected by the corner guards (2c), the corner guards (2c) are matched with the corner edges of the main board (2a), the connection part of the side guard (2b) and the main board (2a) is provided with the separation groove (2d), the connection part of the corner guard (2c) and the side guard (2b) is also provided with the separation groove (2d), the separation groove (2d) is a right triangle groove, the slope of the separation groove (2d) between the side guard (2b) and the main board (2a) is arranged towards the side guard (2b), the slope of the separation groove (2d) between the side guard (2b) and the corner guard (2c) is arranged towards the corner guard (2c), the separation groove (2d) between the side guard (2b) and the corner guard (2c) is arranged from inside to outside and towards the side guard (2b), the innermost side of the separation groove (2d) between the side guard (2b) and the corner guard (2c) is located in the range of the side edge of the main board (2a).

2. The line-up of claim 1, wherein: The storage rack (1) comprises a supporting rod (1a), a limiting structure (1b), an assembling rod (1c), a first end block (1d), a locking knob (1e), an assembling block (1f) and a second end block (1g), the first end block (1d) and the second end block (1g) are each provided with four blocks, one end of the second end block (1g) is fixed with the assembling rod (1c), the first end block (1d) and the assembling block (1f) are each slidingly sleeved on the assembling rod (1c), the assembling block (1f) is provided with multiple blocks and is arranged between the first end block (1d) and the second end block (1g), the supporting rod (1a) is provided with four rods, two ends of two of the supporting rods (1a) are each fixed with the first end block (1d), the remaining two of the supporting rods (1a) are each fixed with the second end block (1g), the supporting rod (1a) is arranged perpendicularly to the assembling rod (1c), the two supporting rods (1a) fixed with the first end block (1d) are connected by the limiting structure (1b), the two supporting rods (1a) fixed with the second end block (1g) are also connected by the limiting structure (1b), the locking knob (1e) is used for locking the position of the first end block (1d) on the assembling rod (1c), the main board (2a) is inserted into the assembling block (1f) between the assembling rods (1c) through the side guard (2b) and the corner guard (2c).

3. The storage facilitating circuit board of claim 2, wherein: The first end block (1d) and the assembling block (1f) cannot rotate relative to the assembling rod (1c).

4. The storage facilitating circuit board according to claim 2 or 3, wherein: The assembly block (1f) comprises a limiting block (1f1), a hinged joint (1f2), a hinged seat (1f3), an assembly ring (1f4), a first limiting slot (1f5) and a second limiting slot (1f6), the assembly ring (1f4) is sleeved on the assembly rod (1c), the assembly ring (1f4) is fixed with the hinged seat (1f3) adjacent to the side of the circuit board (2), one end of the limiting block (1f1) is fixedly connected with the hinged joint (1f2), the limiting block (1f1) is hingedly assembled on the hinged seat (1f3) through the hinged joint (1f2), the limiting block (1f1) is provided with the first limiting slot (1f5) or the second limiting slot (1f6) away from the side of the hinged joint (1f2), the first limiting slot (1f5) is a slot opening penetrating through the limiting block (1f1) from both ends and the side away from the hinged joint (1f2), the second limiting slot (1f6) is a slot opening penetrating through the limiting block (1f1) from the side adjacent to the first limiting slot (1f5) and the side away from the hinged joint (1f2), the limiting block (1f1) located at the insertion opening of the circuit board (2) is provided with the first limiting slot (1f5), and the limiting block (1f1) located at the end of the circuit board (2) is provided with the first limiting slot (1f5).

5. The storage facilitating circuit board of claim 4, wherein: The depth of the first limiting slot (1f5) and the second limiting slot (1f6) away from the side of the hinged joint (1f2) is less than the width of the edge protection (2b).

6. The storage facilitating circuit board of claim 4, wherein: The width of the limiting block (1f1) is less than the width of the assembly ring (1f4).

7. The storage facilitating circuit board of claim 2, wherein: The limiting structure (1b) comprises a receiving groove (1b1), a receiving cylinder (1b2), a protective band (1b3), a limiting assembly ring (1b4), a positioning ring (1b5), a first butt joint (1b6), a second butt joint (1b7), a butt joint pin rod (1b8), a locking cover (1b9), a switching groove (1b10), a locking butt joint groove (1b11), a sleeve assembly ring (1b12), a locking sleeve (1b13) and a torsional spring (1b14), the receiving cylinder (1b2) is provided with two, the receiving cylinder (1b2) is sleeved on the limiting assembly ring (1b4), the limiting assembly ring (1b4) is fixed with the positioning ring (1b5) at the inner ring end, the limiting assembly ring (1b4) is positioned on the supporting rod (1a) through the positioning ring (1b5), the receiving groove (1b1) is formed between the outer ring end of the limiting assembly ring (1b4) and the receiving cylinder (1b2), one end of the protective band (1b3) is fixedly connected with the limiting assembly ring (1b4), the protective band (1b3) is coiled on the limiting assembly ring (1b4) and located in the receiving groove (1b1), the other end of the protective band (1b3) of the two receiving cylinders (1b2) penetrates through the receiving cylinder (1b2) and is fixedly connected with the first butt joint (1b6) or the second butt joint (1b7) respectively, the limiting assembly ring (1b4) is further connected with the receiving cylinder (1b2) through the torsional spring (1b14) on the upper side, the torsional spring (1b14) is used for resetting after the receiving cylinder (1b2) rotates relative to the limiting assembly ring (1b4), the locking cover (1b9) is C-shaped and assembled on the top of the receiving cylinder (1b2) and cannot rotate relative to the receiving cylinder (1b2), the switching groove (1b10) is left between the side edge of the locking cover (1b9) and the receiving cylinder (1b2), the locking butt joint groove (1b11) is arranged on the top of the receiving cylinder (1b2), the sleeve assembly ring (1b12) is fixedly connected with the locking sleeve (1b13) in the locking cover (1b9), the locking sleeve (1b13) is used for rotating the limiting assembly ring (1b4) relative to the receiving cylinder (1b2), the first butt joint (1b6) is L-shaped, the butt joint pin rod (1b8) is fixedly connected with the first butt joint (1b6), and the first butt joint (1b6) is combined by being inserted into the second butt joint (1b7) through the butt joint pin rod (1b8).

8. The storage facilitating circuit board of claim 7, wherein: The positioning ring (1b5) and the locking sleeve (1b13) are both rubber rings.

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