Folder

Abstract

The folder comprises an upper connector, a lower connector, a handle and a self-locking mechanism, the self-locking mechanism comprises a push rod, a first compression spring and a fixing block, a button is arranged at one end of the push rod, the first compression spring is used for enabling the button to be far away from a side plate of the handle, the folder further comprises a jacking mechanism, and the jacking mechanism comprises a pull ring and a jacking block. A wedge-shaped groove matched with the wedge-shaped block is formed in the surface of the pull ring, the jacking block is used for locking the other side of the upper connector and the other side of the lower connector, when the handle is rotated, the jacking block is used for locking the other side of the upper connector and the other side of the lower connector, the first compression spring drives the wedge-shaped block to be clamped in the wedge-shaped groove through the fixing block, self-locking is achieved, the button is pressed, and locking is achieved. The elastic force of the first compression spring is overcome to push the fixing block to drive the wedge-shaped block to be separated from the wedge-shaped groove, the handle is rotated, and the jacking block enables the other sides of the upper connector and the lower connector to be opened. According to the folder disclosed by the utility model, the surface of the pull ring is provided with the wedge-shaped groove which is integrally formed, so that the folder is not easy to damage and longer in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of locking mechanism of mechanical connection, and concretely relates to a folder. BACKGROUND

[0002] Folding bicycle, folding electric bicycle etc. are folded and unfolded through folding connection structure, and the folding connection structure comprises a folder connecting two sides as a whole, and a user controls the folder locking or loosening through a handle to fold and unfold the folding connection structure, which is convenient for the user to store and transport the folding bicycle and is more practical than the traditional bicycle.

[0003] For example, a handle self-locking mechanism and folder disclosed in Chinese patent 201510071561.5 comprises a handle, a locking bolt, a spring, a sleeve ring and a wedge-shaped block arranged on the handle, and a locking block engaged with the wedge-shaped block, the sleeve ring and the wedge-shaped block form a safety hook reciprocating with the spring, the safety hook is pushed to change the engagement state of the wedge-shaped block and the locking block, so as to conveniently lock or open the handle, and when the wedge-shaped block and the locking block are engaged, the position of the wedge-shaped block is locked under the action of the spring restoring force, and the folder is in a stable locking state. However, the locking block of the device is arranged on the outer surface of the upper joint and is generally fixed by welding or bonding, which is easy to be damaged by external objects, and the wedge-shaped groove on the wedge-shaped block cannot be fixedly engaged with the locking block after long-term use, so that the stable locking of the folder cannot be realized, which causes safety hazards when people ride and poor practicability. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a folder, and the wedge-shaped groove is integrally formed on the surface of the pull ring, which is not easy to be damaged and has a longer service life.

[0005] The technical scheme of the folder is:

[0006] The utility model provides a folder, including upper joint, lower joint, handle and self locking mechanism, one side of upper joint, one side of lower joint and handle are connected through hinged shaft hinged connection, the handle includes two side plates, the self locking mechanism includes push rod, first compression spring and fixed block, push rod is set up on the handle and is transversely movable and is penetrated through the side plate, first compression spring and fixed block are sleeved on push rod, the fixed block is arranged between two side plates, the bottom end of fixed block is fixedly connected with wedge block, one end of push rod is equipped with button, first compression spring is used for making button away from the side plate of handle, the folder still includes tight mechanism, the tight mechanism includes pull ring and tight block, the surface of pull ring is equipped with wedge slot matched with wedge block, tight block is used for locking the other side of upper joint and lower joint, when rotating handle, tight block is used for locking the other side of upper joint and lower joint, first compression spring drives wedge block to be clamped in wedge slot through fixed block when, realizes self locking, press button, overcome the elastic force of first compression spring and drive fixed block to make wedge block separate from wedge slot, rotate handle, and tight block makes the other side of upper joint and lower joint open.

[0007] As a preferred scheme, the lower end of the handle is provided with a pair of movable plates, a circular ring groove is arranged between the movable plates, one end of the pull ring is provided with a circular ring opening, the circular ring opening is arranged in the circular ring groove and abuts against the inner side of the movable plate, and the tight mechanism further comprises a circular ring block and an eccentric shaft.

[0008] As a preferred scheme, one side of the upper joint is provided with a pair of upper hinged ears, one side of the lower joint is provided with a pair of lower hinged ears, the outer side of the lower hinged ear abuts against the inner side of the upper hinged ear, the outer side of the movable plate abuts against the inner side of the lower hinged ear, the upper hinged ear, the lower hinged ear and the movable plate are all provided with a hinged hole, the hinged shaft is movably connected through the hinged hole, and both ends of the hinged shaft are rotationally fixed on the two upper hinged ears.

[0009] As a preferred scheme, the free end of the upper joint is provided with a pressing hole, one side of the tight block is provided with a top rod, the top rod extends out of the pressing hole and abuts against the upper joint, and the tight block elastically abuts against the pull ring.

[0010] As a preferred scheme, the tight mechanism further comprises an adjusting rod, a nut and a second compression spring, one end of the adjusting rod is provided with a threaded portion, the other end is provided with a sliding portion, a limiting block is arranged between the threaded portion and the sliding portion, one side of the tight block is provided with a threaded hole, and the threaded portion of the adjusting rod is threadedly connected with the threaded hole of the tight block.

[0011] As a preferred scheme, the nut is arranged on the threaded portion of the adjusting rod, and the nut is used for abutting against the tight block.

[0012] As a preferred solution, the other end of the pull ring is provided with a sliding groove accommodating a sliding part, one end of the sliding part being slidably arranged in the sliding groove.

[0013] As a preferred solution, one end of the sliding part is provided with a cavity, one end of the second compression spring being slidably arranged in the cavity, the other end of the second compression spring being slidably arranged in the sliding groove.

[0014] As a preferred solution, the bottom of the pressing block near the free end of the lower connector is provided with a guide part, the inner side of the free end of the lower connector is provided with a matching inclined groove, when the handle assembly is in the unlocked state, the guide part is pressed out of the inclined groove by pressing the top rod, and the upper connector and the lower connector can be rotatably opened.

[0015] As a preferred solution, the lower connector is provided with a guide slope, the guide slope is arranged above the inclined groove, and one side of the guide part is provided with a matching guide arc surface.

[0016] The folding device has the advantages that: the pull ring is provided with a wedge-shaped groove matched with the wedge-shaped block, when the handle is rotated upward to be close to the upper connector, the handle is locked and cannot be rotated by pressing the button to make the fixed block drive the wedge-shaped block to be clamped in the wedge-shaped groove, and self-locking is realized; when the fixed block drives the wedge-shaped block to be separated from the wedge-shaped groove by pressing the button to overcome the elastic force of the first compression spring, the handle can be unlocked and rotated, and the wedge-shaped groove and the pull ring are integrally formed by precision casting, so that the strength and durability of the structure are effectively improved, and the service life is longer.

[0017] When the self-locking mechanism is in the locked state, the pressing block can be used to lock the other side of the upper connector and the lower connector, so that the stability of the structure is ensured; when the self-locking mechanism on the handle is in the unlocked state, the handle can be rotated downward to be away from the upper connector, at this time, the user can operate the clamping block to unlock the other side of the upper connector and the lower connector by pressing the top rod, the guide part is moved out of the inclined groove by pressing the top rod, and the upper connector and the lower connector can be rotatably opened, so that a double insurance mechanism is provided, and the safety and reliability of the folding device are increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the folding device of the utility model.

[0019] Figure 2 is an exploded structural schematic view of the folding device of the utility model.

[0020] Figure 3 is an explosion schematic view of the folding device of the utility model.

[0021] Figure 4is a folding device upper joint and lower joint unfolding schematic view.

[0022] Figure 5 is a folding device locking state cross section schematic view.

[0023] Figure 6 is a folding device opening state cross section schematic view. DETAILED DESCRIPTION

[0024] The utility model makes further elaboration and illustration to the utility model in combination with specific embodiment and the drawing of specification:

[0025] Reference Figures 1 to 6 A folding device, including upper joint 10, lower joint 20, handle 30 and self-locking mechanism 40, one side of upper joint 10, one side of lower joint 20 and handle 30 are connected through hinged axle 50, handle 30 includes two side plates 31, self-locking mechanism 40 includes push rod 41, first compression spring 42 and fixed block 43, push rod 41 is set on handle 30 and is laterally movable and is set in two side plates 31, first compression spring 42 and fixed block 43 are set on push rod 41, fixed block 43 is arranged between two side plates 31, the bottom end of fixed block 43 is fixedly connected with wedge block 44, one end of push rod 41 is equipped with button 411, first compression spring 42 is used to make button 411 away from the side plate 31 of handle 30, the folding device further includes tight mechanism 60, tight mechanism 60 includes pull ring 61 and tight block 62, the surface of pull ring 61 is equipped with wedge groove 611 that cooperates with wedge block 44, tight block 62 is used to lock the other side of upper joint 10 and lower joint 20, when rotating handle 30, tight block 62 is used to lock the other side of upper joint 10 and lower joint 20, first compression spring 42 drives wedge block 44 to be clamped in wedge groove 611 through fixed block 43, realizes self-locking, press button 411, overcome the elastic force of first compression spring 42 and push fixed block 43 and drive wedge block 44 to separate from wedge groove 611, rotate handle 30, tight block 62 makes the other side of upper joint 10 and lower joint 20 open.

[0026] The lower end of the handle 30 is provided with a pair of movable plates 32, a circular groove 321 is arranged between the movable plates 32, one end of the pull ring 61 is provided with a circular port 612, the circular port 612 is arranged in the circular groove 321, so that the pull ring 61 can slide in the circular groove 321 and abut the inner side of the movable plate 32, the tightening mechanism 60 further comprises a circular block 63 and an eccentric shaft 64, the circular block 63 is arranged in the circular port 612, the surface of the circular block 63 is provided with a through hole 631 and an eccentric hole 632, the hinged shaft 50 passes through the through hole 631, the movable plate 32 is provided with a positioning hole 322, the eccentric shaft 64 passes through the eccentric shaft 64 on the circular block 63 and the positioning hole 322 on the movable plate 32, and the circular block 63 slides in the circular port 612 along the eccentric hole 632, so as to adjust the tension and position of the tightening mechanism 60.

[0027] When the handle 30 is rotated, the circular block 63 drives the eccentric shaft 64 to rotate, the tightening and release functions of the tightening block 62 are realized through the eccentric characteristics, the folding and unfolding functions between the upper joint 10 and the lower joint 20 are realized, the structure is simple, and the operation is convenient.

[0028] One side of the upper joint 10 is provided with a pair of upper hinged ears 11, one side of the lower joint 20 is provided with a pair of lower hinged ears 21, the outer side of the lower hinged ear 21 abuts the inner side of the upper hinged ear 11, the outer side of the movable plate 32 abuts the inner side of the lower hinged ear 21, the upper hinged ear 11, the lower hinged ear 21 and the movable plate 32 are all provided with a hinged hole 51, the hinged shaft 50 passes through the hinged hole 51 and is movably connected, so that the relative rotation between the components is realized, the flexibility and foldability of the folder are provided, and the both ends of the hinged shaft 50 are rotationally fixed on the two upper hinged ears 11, so as to ensure the stability and reliability of the hinged structure.

[0029] The free end of the upper joint 10 is provided with a pressing hole 12, one side of the tightening block 62 is provided with a jacking rod 621, the jacking rod 621 extends out of the pressing hole 12 and abuts the upper joint 10, the movement of the tightening block 62 can be realized by pressing the jacking rod 621, and then the locking and release of the upper joint 10 and the lower joint 20 are controlled, the tightening block 62 and the pull ring 61 are elastically abutted, the tightening block 62 has a certain elasticity during operation, the operation force can be buffered, mechanical wear is reduced, and a smooth operation experience is provided.

[0030] The tightening mechanism 60 further comprises an adjusting rod 65, a nut 66 and a second compression spring 67, one end of the adjusting rod 65 is provided with a threaded part 651, the other end is provided with a sliding part 652, a limiting block 653 is arranged between the threaded part 651 and the sliding part 652, the limiting block 653 limits the transverse movement range of the nut 66, and the position of the limiting block can be adjusted according to the use scene; one side of the tightening block 62 is provided with a threaded hole 622, the threaded part 651 of the adjusting rod 65 is screwed with the threaded hole 622 of the tightening block 62; the nut 66 is arranged on the threaded part 651 of the adjusting rod 65, and the nut 66 is used for abutting against the tightening block 62.

[0031] Wherein, the tightening block 62 can move along the threaded part 651 of the adjusting rod 65, the position of the tightening block 62 can be finely adjusted to adapt to different use conditions or adjust to the best working state, the flexibility is higher, and the design of the adjusting rod 65 and the nut 66 makes the maintenance and replacement more convenient, so as to adapt to different adjustment requirements, facilitate the adjustment of the tightening force of the tightening block 62, and ensure the stability of the structure.

[0032] The other end of the pull ring 61 is provided with a sliding groove 613 accommodating the sliding movement of the sliding part 652, and one end of the sliding part 652 is slidably arranged in the sliding groove 613; one end of the sliding part 652 is provided with a cavity 6521, one end of the second compression spring 67 is slidably arranged in the cavity 6521, and the other end of the second compression spring 67 is slidably arranged in the sliding groove 613.

[0033] The bottom of the tightening block 62 close to the free end side of the lower connector 20 is provided with a guide part 623, the inner side of the free end of the lower connector 20 is provided with a slope 22 matched with the guide part 623, when the handle 30 assembly is in the unlocked state, the guide part 623 is pressed out of the slope 22 by pressing the top rod 621, the upper connector 10 and the lower connector 20 can be rotatably opened, the lower connector 20 is provided with a guide slope 23, the guide slope 23 is arranged above the slope 22, and one side of the guide part 623 is provided with a guide arc surface 6231 matched with the guide slope 23.

[0034] Wherein, the guide slope 23 can make the guide part 623 smoothly slide into or out of the slope 22, reduce the resistance during friction, and the guide slope 23 and the guide arc surface 6231 are matched to reduce the wear between the guide part 623 and the slope 22, prolong the service life.

[0035] Reference Figure 5 And Figure 6When the self-locking mechanism 40 is in the unlocked state, at this time the eccentric shaft 64 is located on the right side of the hinged shaft 50, the second compression spring 67 is not pressed in the cavity 6521, and the top rod 621 can be easily pressed. When the top rod 621 is pressed to make the guide part 623 at the lower end of the tight block 62 shrink into the cavity of the upper joint 10, the bottom end of the upper joint 10 and the top end of the lower joint 20 can be attached together. At this time, the pressing force of the top rod 621 is released, the tight block 62 is restored through the elasticity of the second compression spring 67, so that the guide part 623 at the lower end of the tight block 62 is clamped into the inclined groove 22. Then, the handle 30 is pulled upward, the eccentric shaft 64 moves counterclockwise along the hinged shaft 50, pushes the pull ring 61 to move leftward, and presses the right end of the second compression spring 67, so that the tight block 62 is more stable and clamped with the upper joint 10 and the lower joint 20. When the eccentric shaft 64 completely moves to the left side of the hinged shaft 50, the second compression spring 67 in the cavity 6521 is pressed by the eccentric shaft 64, and the second compression spring 67 is in a pressed state. The top rod 621 is difficult to press and unlock the tightening mechanism 60, and even if the top rod 621 is pressed by mistake, the upper joint 10 and the lower joint 20 cannot be opened, and the safety is higher.

[0036] When the tightening mechanism 60 is locked, the button 411 can be pressed, the button 411 presses the first compression spring 42, the wedge-shaped block 44 moves rightward, the handle 30 can be completely rotated upward and close to the outer wall of the upper joint 10, and when the user releases the hand, the wedge-shaped block 44 is reset under the drive of the first compression spring 42, the wedge-shaped block 44 is engaged with the wedge-shaped groove 611, and the position of the wedge-shaped block 44 is locked, so that the self-locking function of the handle 30 is realized, the handle 30 is prevented from rotating under the action of external force, the locked state of the handle 30 is stable and reliable, and the safety is higher.

[0037] When the upper joint 10 needs to be opened, the button 411 is pressed first, the wedge-shaped block 44 is separated from the wedge-shaped groove 611, the handle 30 can be pulled downward, the eccentric shaft 64 rotates clockwise to the right side of the shaft pin at this time, the second compression spring 67 is gradually released, the top rod 621 can be easily pressed, the top rod 621 is pressed to move the tight block 62 out of the inclined groove 22, and then the upper joint 10 is rotated, so that the folder can be opened, the operation is convenient, and the practicability is high.

[0038] The utility model discloses a folder, the pull ring 61 is equipped with the wedge-shaped groove 611 matched with the wedge-shaped block 44, when rotating the handle 30 upward and close to the upper joint 10, the button 411 is pressed to make fixed block 43 drive wedge-shaped block 44 and clamped in wedge-shaped groove 611, the handle 30 is locked and cannot rotate, realizes self -locking, when the button 411 is pressed and overcomes the elastic force of the first compression spring 42 and drives fixed block 43 to make wedge-shaped block 44 separate from wedge-shaped groove 611, the handle 30 can be unlocked and rotate, and the wedge-shaped groove 611 and the pull ring 61 are integrally formed by precision casting, can effectively improve the strength and durability of structure, and the service life is longer.

[0039] More preferably, when the self-locking mechanism 40 is in the locked state, the pressing block 62 can be used to lock the other side of the upper joint 10 and the lower joint 20, ensuring the stability of the structure; when the self-locking mechanism 40 on the handle 30 is in the unlocked state, the handle 30 can be rotated downward away from the upper joint 10, at which time the user can operate the clamping block by pressing the top rod 621 to unlock the other side of the upper joint 10 and the lower joint 20, and pressing the top rod 621 will make the guide part 623 move out of the inclined groove 22, so that the upper joint 10 and the lower joint 20 can be rotated to open. This design provides a double insurance mechanism, increasing the safety and reliability of the folder.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A folder comprising an upper joint, a lower joint, a handle and a self-locking mechanism, one side of the upper joint, one side of the lower joint and the handle being hingedly connected through a hinge shaft, the handle comprising two side plates, the self-locking mechanism comprising a push rod, a first compression spring and a fixed block, the push rod being transversely movably arranged on the handle, the first compression spring and the fixed block being sleeved on the push rod, the fixed block being arranged between the two side plates, a wedge-shaped block being fixedly connected to a bottom end of the fixed block, characterized in that, The end of the push rod is provided with a button, the first compression spring is used for moving the button away from the side plate of the handle, the folder further comprises a tightening mechanism, the tightening mechanism comprises a pull ring and a tightening block, the surface of the pull ring is provided with a wedge-shaped groove matched with the wedge-shaped block, the tightening block is used for locking the other side of the upper joint and the lower joint, when the handle is rotated, the tightening block is used for locking the other side of the upper joint and the lower joint, the first compression spring drives the wedge-shaped block to be clamped in the wedge-shaped groove through the fixed block, and self-locking is realized, the button is pressed, the fixed block drives the wedge-shaped block to be separated from the wedge-shaped groove by overcoming the elastic force of the first compression spring, and the handle is rotated, and the tightening block opens the other side of the upper joint and the lower joint.

2. The folder of claim 1, wherein The lower end of the handle is provided with a pair of movable plates, a circular groove is arranged between the movable plates, one end of the pull ring is provided with a circular port, the circular port is arranged in the circular groove and abuts against the inner side of the movable plate, and the tightening mechanism further comprises a circular block and an eccentric shaft.

3. The folder of claim 2 wherein, The side of the upper joint is provided with a pair of upper hinged ears, the side of the lower joint is provided with a pair of lower hinged ears, the outer side of the lower hinged ear abuts against the inner side of the upper hinged ear, the outer side of the movable plate abuts against the inner side of the lower hinged ear, the upper hinged ear, the lower hinged ear and the movable plate are all provided with a hinged hole, the hinged shaft is movably connected through the hinged hole, and the two ends of the hinged shaft are rotationally fixed on the two upper hinged ears.

4. The folder of claim 1 wherein, The free end of the upper joint is provided with a pressing hole, one side of the tightening block is provided with a jacking rod, the jacking rod extends out of the pressing hole and abuts against the upper joint, and the tightening block elastically abuts against the pull ring.

5. The folder of claim 4 wherein, The tightening mechanism further comprises an adjusting rod, a nut and a second compression spring, one end of the adjusting rod is provided with a threaded part, the other end is provided with a sliding part, a limiting block is arranged between the threaded part and the sliding part, one side of the tightening block is provided with a threaded hole, and the threaded part of the adjusting rod is threadedly connected with the threaded hole of the tightening block.

6. The folder of claim 5 wherein, The nut is arranged on the threaded part of the adjusting rod, and the nut is used for abutting against the tightening block.

7. The folder of claim 6 wherein, The other end of the pull ring is provided with a sliding groove in which the sliding part is movably arranged.

8. The folder of claim 7 wherein, One end of the sliding part is provided with a cavity, one end of the second compression spring is slidably arranged in the cavity, and the other end of the second compression spring is slidably arranged in the sliding groove.

9. The folder of claim 4 wherein, The bottom of the tightening block close to the side of the free end of the lower joint is provided with a guide part, the inner side of the free end of the lower joint is provided with an inclined groove matched with the guide part, when the handle assembly is in the unlocked state, the jacking rod is pressed to move the guide part out of the inclined groove, and the upper joint and the lower joint can be rotatably opened.

10. The folder of claim 9, wherein, The lower joint is provided with a guide slope, the guide slope is arranged above the inclined groove, and one side of the guide part is provided with a guide arc surface matched with the guide slope.

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