Carbon fiber folder

Abstract

The invention relates to the technical field of folders, in particular to a carbon fiber folder. The invention discloses a carbon fiber folder which comprises a first folding seat and a second folding seat, a U-shaped semi-enclosed structure is formed on the first folding seat, the U-shaped semi-enclosed structure comprises a bottom and side walls located on the two sides of the bottom, a lock pin hole is formed between the two side walls, and the opening direction of the lock pin hole is consistent with that of an opening of the U-shaped semi-enclosed structure. One end of the second folding seat is located in the U-shaped semi-enclosed structure and connected with the two side walls of the U-shaped semi-enclosed structure of the first folding seat through a pivot, and the second folding seat can only move towards the opening direction of the U-shaped semi-enclosed structure around the pivot. And a lock pin capable of being inserted into the lock pin hole is arranged on the second folding seat. The folding device has the advantages that the use simplicity and the service life of the fixing part are ensured while folding of the folding device is realized.

Description

Technical Field

[0001] The invention relates to the technical field of folders, and in particular to a carbon fiber folder. Background Art

[0002] A Chinese patent application with application number 202321558664.0 discloses a vertical tube iron folder, including a folder lower seat, a folding device upper seat and a folding seat locking structure; the folding device lower seat and one end of the folding device upper seat are hinged to each other through a folding device connecting shaft, and the folding seat locking structure is arranged at the other end of the folding device lower seat and the folding device upper seat, and the folding seat locking structure includes a folding device handle, a folding device safety buckle assembly and a folding device tightening block assembly, the folding device safety buckle assembly includes a sliding groove and a safety buckle arranged on the side of the other end of the folding device handle, and the folding device tightening block assembly includes a tightening shaft, a tightening block and a tightening screw arranged on the inner side of the locking seat.

[0003] In the above technical scheme, the tightening screw on the folder handle contacts the tightening shaft in the locking seat, thereby playing a tightening role, so that the folder handle is used to fix the folder lower seat and the folder upper seat. However, the fixing method in the above technical scheme is relatively cumbersome to operate, and it is necessary to operate the safety buckle to slide and open the folder handle at the same time. After the entire folder is used for a long time, dust or wear will inevitably accumulate on the safety buckle, resulting in relative jamming between the safety buckle and the sliding groove, making it difficult to unlock the folder handle at this time; when the folder lower seat and the folder upper seat are fixed, the shear stress generated by the deformation between the folder lower seat and the folder upper seat completely acts on the safety buckle. Once the safety buckle is deformed, the folder lower seat and the folder upper seat cannot be fixed, resulting in the above-mentioned inconvenience in actual use of the entire folder.

[0004] Therefore, achieving folding of the folder while ensuring ease of use and service life of the fixing parts is a technical problem that still needs to be solved in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a carbon fiber folder which can realize folding of the folder while ensuring ease of use and service life of a fixing part.

[0006] To achieve the above-mentioned purpose, the present invention discloses a carbon fiber folder, including a first folding seat and a second folding seat, a U-shaped semi-enclosed structure is formed on the first folding seat, the U-shaped semi-enclosed structure includes a bottom and side walls located on both sides of the bottom, a locking pin hole with an opening facing the same direction as the opening of the U-shaped semi-enclosed structure is provided between the two side walls, one end of the second folding seat is located in the U-shaped semi-enclosed structure and the end of the second folding seat is pivotally connected to the two side walls of the U-shaped semi-enclosed structure of the first folding seat, the second folding seat can only move around the pivot toward the opening direction of the U-shaped semi-enclosed structure, a locking pin that can be inserted into the locking pin hole is provided on the second folding seat, and when the locking pin is inserted into the locking pin hole, the second folding seat cannot move around the pivot toward the opening direction of the U-shaped semi-enclosed structure.

[0007] When the folder needs to be transformed from a flat state to a folded state, the locking pin located in the second folding seat is moved in a direction away from the first folding seat, thereby separating the locking pin from the locking pin hole in the first folding seat, thereby unlocking the first folding seat and the second folding seat. At this time, the second folding seat and the first folding seat can be rotated to fold them.

[0008] The present invention adopts the matching mode of the locking pin and the locking pin hole and realizes the fixing or unlocking of the second folding seat and the first folding seat by controlling the sliding of the locking pin. Compared with the cumbersome steps of the traditional folder which requires the simultaneous operation of the safety buckle and the folder handle, the operation process of the folder is simplified, making the user's operation simple and quick, while avoiding the use of fasteners, thereby improving the overall stability and service life of the folder. The present invention has the advantages of realizing the folding of the folder while ensuring the ease of use and service life of the fixing parts.

[0009] Preferably, a sliding groove is provided in the second folding seat for the locking pin to slide away from the bottom of the U-shaped semi-enclosed structure, and a retracted step surface is provided in the middle section of the locking pin located in the second folding seat, and an elastic member is provided between the step surface and the bottom of the sliding groove.

[0010] The elastic force of the elastic member causes the lock pin head to be located in the lock pin hole, thereby ensuring that the second folding seat and the first folding seat are locked when the folder is laid flat.

[0011] The elastic member is any existing member that can realize the reciprocating movement of the locking pin along its own axial direction through elastic force, such as a thrust spring.

[0012] Preferably, the bottom of the U-shaped semi-enclosed structure is a horizontal structure parallel to the axial direction of the second folding seat, the locking pin hole is arranged in the horizontal structure, the axial direction of the locking pin hole is perpendicular to the horizontal structure of the bottom of the U-shaped semi-enclosed structure, and the locking pin is opposite to the locking pin hole opening.

[0013] By limiting the opening direction of the locking pin hole set at the bottom of the U-shaped semi-enclosed structure and the axial position of the pin shaft, the locking pin can only slide back and forth in a direction perpendicular to the bottom of the U-shaped semi-enclosed structure, so that the movement trajectory of the locking pin intersects the folding trajectory of the first folding seat and the second folding seat, thereby ensuring the fixing effect of the first folding seat and the second folding seat.

[0014] Preferably, two side walls of the U-shaped semi-enclosed structure are provided with a convex plate at one end away from the axis of the first folding seat, and the second folding seat located in the U-shaped semi-enclosed structure is provided with a convex portion located between the two side convex plates, the convex portion is matched with the shape of the convex plates, and a pivot passing through the convex portion is provided between the two side convex plates.

[0015] By arranging the pivot on the side away from the axis of the first folding seat and the second folding seat and adjusting the rotation radius of the first folding seat and the second folding seat, it is prevented that when the first folding seat and the second folding seat are folded, the first folding seat and the second folding seat are prevented from being stuck due to their own shapes hindering the movement trajectory.

[0016] Preferably, the end surfaces of the second folding seat and the U-shaped semi-enclosed structure that are close to each other are both inclined surfaces, and the inclined surface of the second folding seat gradually inclines away from the first folding seat from the side close to the pivot to the side close to the bottom of the U-shaped semi-enclosed structure.

[0017] By setting the end face of the U-shaped semi-enclosed structure as an inclined surface, the bottom of the U-shaped semi-enclosed structure has a larger thickness while ensuring that the first folding seat has the same thickness and provides a support surface of the same area for the second folding seat, so that the first folding seat and the second folding seat have better resistance to back bending when fixed.

[0018] Preferably, the U-shaped semi-enclosed structure is provided with a rubber piece which is perpendicular to the inclined surface of the second folding seat.

[0019] The rubber piece squeezes the inclined surface of the second folding seat, thereby pressing the second folding seat tightly, thereby preventing the assembly gap between the second folding seat and the first folding seat from causing looseness between the two.

[0020] The rubber part may be any existing part that is used to fill in the gap and has a certain elasticity, such as a rubber plug or a rubber pad.

[0021] Preferably, a lock sleeve is provided in the lock pin hole, and the lock sleeve is used to be sleeved on the lock pin head, thereby further increasing the friction force when the lock pin head is located in the lock pin hole through the limiting sleeve.

[0022] Preferably, a lever mechanism is further provided at one end of the second folding seat away from the first folding seat, the lever mechanism comprising a rotating support and a rocker arm arranged on the second folding seat, the rocker arm comprising a horizontal portion parallel to the axis direction of the first folding seat and an inclined portion arranged at one end of the horizontal portion away from the first folding seat, one end of the horizontal portion is hinged to the tail of the locking pin, the boundary between the horizontal portion and the inclined portion is placed on the rotating support, and the inclined portion is inclined in a direction away from the axis direction of the first folding seat.

[0023] The rocker arm on one side of the rotating support and the locking pin is the resistance arm, and the rocker arm on the side of the rotating support away from the locking pin is the power arm. A lever mechanism is formed with the rotating support as a fulcrum, thereby facilitating the user to operate the locking pin for unlocking and locking.

[0024] Preferably, an end of the rotating support in contact with the rocker arm is provided with an arc-shaped chamfer.

[0025] The rocker arm is placed on the arc-shaped chamfer of the rotating support. Compared with the method of directly hingedly connecting the rotating support and the rocker arm, the arc-shaped chamfer can compensate for the displacement of the rocker arm at the rotating support when it is pressed down, thereby preventing it from getting stuck.

[0026] Preferably, a connecting tube is provided at one end of the second folding seat which is relatively far away from the first folding seat, an inner tube is coaxially arranged inside the connecting tube, an annular protrusion for axially limiting the inner tube is provided on the outer wall of the inner tube, an annular groove matching the protrusion is provided at the pipe mouth of the connecting tube, a through hole is provided to communicate with the inner tube and the connecting tube, and a thread is provided on the inner wall of the through hole of the inner tube.

[0027] Due to the physical properties of the carbon fiber material itself, the second folding seat and the first folding seat cannot be processed with threads, and cannot be adapted for assembly with pipe fittings that require threads for fastening and assembly. In addition, a threaded portion is added to the connecting pipe through the inner tube to expand the adaptation range of the folder, and then the assembly position of the sleeve is axially limited to ensure the assembly accuracy of the sleeve.

[0028] The present invention can simplify the operation process of the folder, and the operation is simple and quick, while avoiding the use of fasteners, thereby increasing the overall service life of the folder, and has the advantages of achieving folding of the folder while ensuring the ease of use and service life of the fixing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A structural schematic diagram of the present invention.

[0030] Figure 2 It is a schematic diagram of the explosion structure of the present invention.

[0031] Figure 3 It is a schematic structural diagram of the first folding seat in the present invention.

[0032] Figure 4 It is a cross-sectional structural schematic diagram of the present invention.

[0033] In the figure: 11, first folding seat; 110, U-shaped semi-enclosed structure; 111, bottom plate; 112, side plate; 113, convex plate; 12, second folding seat; 121, connecting pipe; 122, inclined surface; 123, convex block; 124, supporting groove; 13, hinge axis; 14, button; 15, rotating support; 151, arc chamfer; 16, locking pin; 17, thrust spring; 18, locking pin hole; 19, limiting sleeve; 20, rubber plug; 21, inner tube; 22, through hole; 23, threaded hole. DETAILED DESCRIPTION

[0034] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0035] Depend on Figure 1As shown, this embodiment discloses a carbon fiber folder, the first folding seat 11 includes a U-shaped semi-enclosed structure 110, the U-shaped semi-enclosed structure 110 includes a bottom plate 111, side plates 112 located on both sides of the bottom, and convex plates 113 arranged at one end of the two side plates 112 away from the axis of the first folding seat 11, the second folding seat 12 located in the U-shaped semi-enclosed structure 110 is provided with a convex block 123 located between the two side convex plates 113, one end of the second folding seat 12 is located in the U-shaped semi-enclosed structure 110 and the second folding seat 12 is located in the U-shaped semi-enclosed structure 110. The convex block 123 on the end of the folding seat 12 is connected to the convex plate 113 on the two side plates 112 of the first folding seat U-shaped semi-enclosed structure 110 through the hinge shaft 13. The second folding seat 12 can only move around the pivot toward the opening direction of the U-shaped semi-enclosed structure 110. A locking pin hole 18 is provided between the two side plates 112, and the opening direction is consistent with the opening of the U-shaped semi-enclosed structure 110. A sliding groove is provided in the second folding seat 12. The bottom plate 111 of the U-shaped semi-enclosed structure 110 is the second folding seat. The second folding seat 12 is a horizontal structure parallel to the axial direction of the seat 12, a locking pin 17 is provided in the sliding groove to slide in the direction of the bottom plate 111 away from the U-shaped semi-enclosed structure 110, a limiting sleeve 19 is provided in the locking pin hole 18, and the limiting sleeve 19 is used to be sleeved on the head of the locking pin 16. The middle section of the locking pin 17 located in the second folding seat 12 is provided with a retracted step surface, and a thrust spring 17 is provided between the step surface and the inner wall of the second folding seat 12. When the locking pin 17 is inserted into the locking pin hole 18, the second folding seat 12 cannot rotate around the pivot Moving toward the opening direction of the U-shaped semi-enclosed structure 110, a connecting pipe 121 is provided at one end relatively away from the first folding seat 11 and the second folding seat 12, and the connecting pipe 121 is used to assemble with the pipe fitting to be connected; a lever mechanism is also provided at one end of the second folding seat 12 away from the first folding seat 11, wherein the lever mechanism includes a rotating support 15 arranged on the second folding seat 12 and a button 14 in the form of a long plate, and the lever mechanism is used to control the locking pin 16 to slide back and forth in a direction away from the first folding seat 11.

[0036] Depend on Figure 2 As shown, the second folding seat 12 is provided with a support groove 124 for installing the rotating support 15, and the rotating support 15 is glued to the inner wall of the support groove 124, and the button 14 includes a horizontal part and an inclined part, one end of the horizontal part is hinged to the tail of the locking pin 16, and the other end of the horizontal part is placed on the rotating support 15, and the inclined part is inclined from the side close to the rotating support 15 to the side away from the rotating support 15 away from the vertical tubular structure; the end of the rotating support 15 in contact with the button 14 is provided with an arc-shaped chamfer 151, and the button 14 is provided with a recessed part adapted to the arc-shaped chamfer 151. When the button 14 is pressed down, the inner wall of the recessed part slides relative to the circumferential surface of the arc-shaped chamfer 151, thereby compensating for the displacement of the rocker arm at the rotating support 15 when it is pressed down to prevent it from getting stuck.

[0037] The end surfaces of the second folding seat 12 and the U-shaped semi-enclosed structure 110 that are close to each other are both inclined surfaces 122. The inclined surface 122 of the second folding seat 12 gradually inclines in a direction away from the first folding seat 11 from the side close to the hinge shaft 13 to the side close to the bottom plate 111 of the U-shaped semi-enclosed structure 110. A rubber plug 20 is provided on the inclined surface 122 of the U-shaped semi-enclosed structure 110, which is perpendicular to the inclined surface 122 of the second folding seat 12.

[0038] Depend on Figure 3 As shown, the connecting tube 121 of the first folding seat 11 and the second folding seat 12 is coaxially provided with an inner tube 21, and a through hole 22 is provided in communication between the inner tube 21 and the connecting tube 121, and a threaded hole 23 corresponding to the through hole 22 is provided in the inner tube 21, and an annular protrusion for axial limiting is provided on the outer wall of the inner tube 21, and an annular groove matching the protrusion is provided at the tube mouth of the connecting tube 121.

[0039] The pipe fitting to be connected is placed on the surface of the connecting pipe 121 of the second folding seat 12 and the first folding seat 11, and assembled with the bolts and the threaded holes 23 to clamp the pipe fitting and the connecting pipe 121. At this time, when the head of the locking pin 16 is inserted into the limiting sleeve 19, the locking pin 16 makes the inclined surface 122 of the U-shaped semi-enclosed structure 110 fit tightly with the inclined surface 122 of the second folding seat 12, and cooperates with the rubber plug 20 to tighten the gap between the second folding seat 12 and the first folding seat 11, so that the second folding seat 12 is fixed between the first folding seat 11 and the second folding seat 12. When the folder needs to be changed from a flat state to a folded state, the button 14 is pressed down. The button 14 pries the locking pin 16 upward with the rotating support 15 as a fulcrum. The thrust spring 17 is compressed while the locking pin 16 moves upward. During this process, the head of the locking pin 16 is disengaged from the limiting sleeve 19, thereby unlocking the locking pin 16 from the first folding seat 11. At this time, the second folding seat 12 and the first folding seat 11 can be manually rotated back to back with the hinge shaft 13 as the axis.

Claims

1. A carbon fiber folder, comprising a first folding seat and a second folding seat, characterized in that: A U-shaped semi-enclosed structure is formed on the first folding seat, and the U-shaped semi-enclosed structure includes a bottom plate and side plates located on both sides of the bottom plate, and a locking pin hole is provided between the two side plates, the opening of which is consistent with the opening of the U-shaped semi-enclosed structure. One end of the second folding seat is located in the U-shaped semi-enclosed structure and the end of the second folding seat is pivotally connected to the two side plates of the U-shaped semi-enclosed structure of the first folding seat. The second folding seat can only move around the pivot toward the opening direction of the U-shaped semi-enclosed structure, and a locking pin that can be inserted into the locking pin hole is provided on the second folding seat. When the locking pin is inserted into the locking pin hole, the second folding seat cannot move around the pivot toward the opening direction of the U-shaped semi-enclosed structure.

2. A carbon fiber folder according to claim 1, characterized in that: The second folding seat is provided with a sliding groove for the locking pin to slide away from the bottom plate of the U-shaped semi-enclosed structure. The middle section of the locking pin located in the second folding seat is provided with an inwardly retracted step surface, and an elastic member is provided between the step surface and the bottom of the sliding groove.

3. A carbon fiber folder according to claim 1 or 2, characterized in that: The bottom plate of the U-shaped semi-enclosed structure is a horizontal structure parallel to the axial direction of the second folding seat, the locking pin hole is arranged in the horizontal structure, the axial direction of the locking pin hole is perpendicular to the horizontal structure of the bottom plate of the U-shaped semi-enclosed structure, and the locking pin is opposite to the opening of the locking pin hole.

4. A carbon fiber folder according to claim 3, characterized in that: The two side plates of the U-shaped semi-enclosed structure are provided with a convex plate at one end away from the axis of the first folding seat, and the second folding seat located in the U-shaped semi-enclosed structure is provided with a convex portion located between the two side convex plates, the convex portion is matched with the shape of the convex plates, and a pivot passing through the convex portion is provided between the two side convex plates.

5. A carbon fiber folder according to claim 4, characterized in that: The end surfaces of the second folding seat and the U-shaped semi-enclosed structure that are close to each other are both inclined surfaces, and the inclined surface of the second folding seat gradually inclines away from the first folding seat from the side close to the pivot to the side close to the bottom plate of the U-shaped semi-enclosed structure.

6. A carbon fiber folder according to claim 5, characterized in that: The U-shaped semi-enclosed structure is provided with a rubber piece which is perpendicular to the inclined surface of the second folding seat.

7. The carbon fiber folder according to claim 3, characterized in that: A lock sleeve is arranged in the lock pin hole, and the lock sleeve is used for sleeve-connecting the lock pin head.

8. The carbon fiber folder according to claim 1, characterized in that: A lever mechanism is also provided at one end of the second folding seat away from the first folding seat, the lever mechanism includes a rotating support and a rocker arm provided on the second folding seat, the rocker arm includes a horizontal portion parallel to the axis direction of the first folding seat and an inclined portion provided at one end of the horizontal portion away from the first folding seat, one end of the horizontal portion is hinged to the tail of the locking pin, the boundary between the horizontal portion and the inclined portion is placed on the rotating support, and the inclined portion is inclined in a direction away from the axis direction of the first folding seat.

9. The carbon fiber folder according to claim 1, characterized in that: An end of the rotary support in contact with the rocker arm is provided with an arc chamfer.

10. The carbon fiber folder according to claim 1, characterized in that: A connecting tube is provided at one end of the second folding seat which is relatively far away from the first folding seat, an inner tube is coaxially arranged inside the connecting tube, an annular protrusion for axially limiting the inner tube is provided on the outer wall of the inner tube, an annular groove matching the protrusion is provided at the pipe mouth of the connecting part, a through hole is provided in communication between the inner tube and the connecting part, and a thread is provided on the inner wall of the through hole of the inner tube.

Images