CN210258690U

CN210258690U - Folder with self-locking function

Info

Publication number: CN210258690U
Application number: CN201920875645.8U
Authority: CN
Inventors: 罗成
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-04-07
Anticipated expiration: 2029-06-10

Abstract

The utility model discloses a folder with self-locking function, which comprises an upper folding plate and a lower folding plate, wherein one end of the upper folding plate and one end of the lower folding plate are hinged through a rotating shaft; an opening is formed in the free end of the upper folding plate, a D-shaped shaft parallel to the rotating shaft is fixedly arranged in the opening, the surface of the D-shaped shaft comprises a plane and a first arc-shaped surface, and the plane faces the side wall of the opening and forms a self-locking hole with the side wall of the opening; the self-locking mechanism comprises a handle with a cavity, a fastening bolt fixedly arranged in the handle and a locking mechanism arranged on the fastening bolt; the buckling and locking mechanism and the fastening bolt are matched with the D-shaped shaft and the self-locking hole to realize the closed locking of the upper folding plate and the lower folding plate. The utility model has the advantages of simple and reasonable structure, installation and simple to use and self-locking function safe and reliable.

Description

Folder with self-locking function

Technical Field

The utility model relates to a scray technical field specifically relates to a scray with self-locking function.

Background

The folding bicycle or the folding electric bicycle is popular with consumers due to the characteristic of quick folding or unfolding. When the folding bicycle or the folding electric vehicle is folded, the volume is greatly reduced, and the transportation and the storage are convenient; after being unfolded, the utility model is safe and practical, which is convenient for people to exercise and build body or walk instead. In order to ensure the use safety, after the foldable bicycle or the foldable electric bicycle is unfolded, the folder needs to be quickly locked and fixed by using a self-locking device, so that the folder is prevented from being opened when the foldable bicycle or the foldable electric bicycle is used. Therefore, it is very important to ensure the reliability of the self-locking device. At present, various self-locking mechanisms are adopted in the folder, but the defects of complex structure, poor self-locking function of the self-locking mechanism and the like generally exist, so that the folder is large in installation difficulty, inconvenient to use and not safe enough.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a scray with self-locking function, its simple structure, installation and convenient to use and self-locking function safe and reliable.

In order to realize the purpose, the technical scheme of the utility model is that: a folder with a self-locking function comprises an upper folding plate and a lower folding plate, wherein one end of the upper folding plate and one end of the lower folding plate are hinged through a rotating shaft; an opening is formed in the free end of the upper folding plate, a D-shaped shaft parallel to the rotating shaft is fixedly arranged in the opening, the surface of the D-shaped shaft comprises a plane and a first arc-shaped surface, and the plane faces the side wall of the opening and forms a self-locking hole with the side wall of the opening; the self-locking mechanism comprises a handle with a cavity, a fastening bolt fixedly arranged in the handle and a locking mechanism arranged on the fastening bolt; the buckling and locking mechanism and the fastening bolt are matched with the D-shaped shaft and the self-locking hole to realize the closed locking of the upper folding plate and the lower folding plate.

For the additional structure of the above technical scheme, the following scheme is also included:

as a specific example, the fastening bolt is in threaded connection with a boss positioned in the handle, and the screw head of the fastening bolt is positioned above the upper surface of the boss; the locking mechanism comprises a spring, a Z-shaped movable shifting piece which can be matched with the self-locking hole in a vertically sliding manner and a button which can be used for controlling the movable shifting piece to slide vertically; the movable shifting piece comprises an upper end, a lower end and a horizontal end which is respectively connected with the upper end and the lower end, the horizontal end of the movable shifting piece is positioned on the upper surface of the boss and is sleeved on the screw rod of the fastening bolt through a through hole, and the bottom of the lower end of the movable shifting piece is provided with a second arc-shaped surface matched with the first arc-shaped surface; the spring is positioned above the horizontal end of the movable shifting piece and sleeved on the screw rod of the fastening bolt; the button is slidably disposed on a surface of the handle.

Furthermore, two sides of the lower end of the movable poking sheet are respectively concavely provided with a limiting groove; a limiting convex part which is positioned in the limiting groove and used for preventing the movable shifting piece from separating from a preset running track is integrally formed on each of two sides of the handle; and the two limiting convex parts are provided with a blocking piece for blocking the movable shifting piece from moving outwards the handle.

Further, the plane of the D-shaped shaft is vertically arranged.

Furthermore, an included angle between the lower end of the movable shifting piece and the horizontal end of the movable shifting piece is an acute angle; an included angle between the side surface of the boss facing the lower end of the movable poking sheet and the upper surface of the boss is an acute angle; the degrees of the two included angles are equal.

Furthermore, the self-locking mechanism further comprises a set screw arranged on one side of the handle, and the set screw is used for fixing the fastening bolt.

The utility model has the advantages that:

the utility model has the advantages of simple and reasonable structure, form one from the lockhole between the plane through D type axle and the open-ended lateral wall, then utilize the lower extreme card that the activity plectrum made the activity plectrum to establish and support the top surface of D type axle in from the lockhole and fastening bolt's bottom thereby make the folded sheet can not upwards open and the handle can not outwards swing, and then reached self-locking function, this kind of structure atress is stable and safe and reliable moreover. Therefore, the utility model has the advantages of simple and reasonable structure, installation and simple to use and self-locking function safe and reliable.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is an exploded view of the self-locking mechanism of the present invention;

fig. 4 is a schematic structural view of a D-shaped shaft of the present invention;

FIG. 5 is a schematic structural view of the movable shifting piece and the boss of the present invention;

fig. 6 is a schematic structural view of the self-locking mechanism of the present invention in use;

FIG. 7 is a schematic structural view of the novel self-locking mechanism used in locking;

fig. 8 is an enlarged view at a in fig. 7.

Reference numerals:

1. a rotating shaft; 2. an upper folding plate; 21. an opening; 22. a D-shaped shaft; 221. a planar surface 222, a first arcuate surface; 23. self-locking holes; 3. a lower folding plate; 4. a self-locking mechanism; 41. a handle; 411. a boss; 412. A limit bulge; 413. a baffle plate; 42. fastening a bolt; 43. a spring; 44. a movable poking sheet; 441. The upper end of the movable poking sheet; 442. the lower end of the movable poking sheet; 4421. a second arcuate surface; 4422. a limiting groove; 443. a horizontal end of the movable plectrum; 45. a button; 46. and (5) fixing the screw.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.

As shown in fig. 1-8, a folder with a self-locking function comprises an upper folding plate 2 and a lower folding plate 3, one ends of which are hinged through a rotating shaft, and a self-locking mechanism is hinged at the free end of the lower folding plate 3; wherein, an opening 21 is provided at the free end of the upper folding plate 2, a D-shaped shaft 22 parallel to the rotating shaft 1 is fixedly provided in the opening 21, as shown in fig. 1 and 4, the surface of the D-shaped shaft 22 includes a plane 221 and a first arc-shaped surface 222, the plane 221 faces the side wall of the opening 21 and forms a self-locking hole 23 with the side wall of the opening; the self-locking mechanism comprises a handle 41 with a cavity, a fastening bolt 42 fixedly arranged in the handle 41 and a locking mechanism arranged on the fastening bolt 42; the locking mechanism and the fastening bolt 42 are matched with the D-shaped shaft 22 and the self-locking hole 23 to realize the closed locking of the upper folding plate 2 and the lower folding plate 3.

As shown in fig. 3 and 5, the fastening bolt 42 is screwed with a boss 411 in the handle 41, the screw head of the fastening bolt 42 is located above the upper surface of the boss 411, and since the fastening bolt 42 is screwed with the boss 411, one can adjust the fastening bolt 42 as required; the locking mechanism comprises a spring 43, a Z-shaped movable shifting piece 44 which can be matched with the self-locking hole 23 in a vertically sliding manner, and a button 45 which can be used for controlling the movable shifting piece 44 to slide vertically; the movable shifting piece 44 comprises an upper end, a lower end and a horizontal end connected with the upper end and the lower end respectively, the horizontal end 443 of the movable shifting piece is positioned on the upper surface of the boss 411 and sleeved on the screw rod of the fastening bolt 42 through a through hole, and the bottom of the lower end 442 of the movable shifting piece is provided with a second arc-shaped surface 4421 matched with the first arc-shaped surface 222; the spring 43 is positioned above the horizontal end 443 of the movable poking sheet and sleeved on the screw rod of the fastening bolt 42; the button 45 is slidably disposed on the surface of the handle 41, and specifically, the button 45 is fixedly connected to the upper end 441 of the movable pick by a screw. The provision of the second arcuate surface 4421 makes the movable finger 44 move more smoothly without being caught by the D-shaped shaft 22.

As shown in fig. 1-3, a limiting groove 4422 is formed at each of the two sides of the lower end 442 of the movable pulling piece; a limit protrusion 412 positioned in the limit groove 4422 for preventing the movable pulling piece 44 from departing from the preset track is integrally formed at both sides of the handle; a stop piece 413 for stopping the movable pulling piece 44 from moving outward from the handle 41 is arranged on the two limit protrusions 412. When the movable shifting piece 44 moves up and down, the two limit bulges 412 are arranged in the two limit grooves 4422, so that the limit bulges 412 play a role of blocking, on one hand, the movable shifting piece 44 can be limited from being separated from the limit bulges 412 when moving up and down, and on the other hand, the movable shifting piece 44 and the self-locking hole 23 can be prevented from being dislocated due to the fact that the two sides of the movable shifting piece 44 swing; meanwhile, the blocking piece 413 also limits the movable poking piece 44 from moving outwards from the handle, so that the movable poking piece 44 can be accurately matched with the self-locking hole 23 through the arrangement.

Preferably, as shown in fig. 4 and 8, the plane 221 of the D-shaped shaft 22 is vertically disposed. As shown in fig. 5, the included angle between the lower end 442 of the movable pulling piece 44 and the horizontal end 443 of the movable pulling piece is an acute angle; an included angle between the side surface of the lower end of the boss 411 facing the movable shifting piece and the upper surface of the boss 411 is an acute angle; the degrees of the two included angles are equal, and as a preferred scheme, the two included angles are both 87 degrees. Through the arrangement, the movable shifting piece 44 is more attached to the boss 411, and only the bottom of the lower end 442 of the movable shifting piece is in contact with the plane 221 when the movable shifting piece is inserted into the self-locking hole 23, but not the whole back surface is in contact with the plane 221, so that resistance is reduced, and the movable shifting piece 44 is more smooth when the movable shifting piece is inserted into the self-locking hole 23.

As shown in fig. 3, the self-locking mechanism 4 further includes a set screw 46 disposed on one side of the handle 41, the set screw 46 is used for fixing the fastening bolt 42, specifically, one end of the set screw 46 passes through the side of the handle 41 and is disposed in the boss 411 and contacts with the fastening bolt 42, the fastening bolt 42 is prevented from moving by pressing the set screw 46, and when the fastening bolt 42 needs to be adjusted, the set screw 46 is firstly loosened and then the fastening bolt 42 is adjusted.

The utility model discloses a use is introduced below to understand the utility model discloses:

as shown in fig. 6-8, firstly, the self-locking operation of the folder includes that the upper folding plate 2 and the lower folding plate 3 are folded by the rotating shaft 1, the handle 41 is pushed upwards in the reverse direction, the first arc-shaped surface 222 contacts with the second arc-shaped surface 4421, the movable dial 44 moves upwards and the spring 43 is compressed along with the continuous movement of the movable dial 44, when the bottom of the lower end 442 of the movable dial slides to the upper side of the self-locking hole 23, the spring 43 is not pressed and extends to insert the lower end 442 of the movable dial into the self-locking hole 23, and the upper end of the limiting groove 4422 contacts with the upper end of the limiting protrusion 412, so that the movable dial 44 cannot slide downwards continuously, at this time, the bottom of the fastening bolt 42 just contacts with the top of the D-shaped shaft 22 to limit the upper folding plate 2, so that the upper folding plate 2 cannot be turned upwards, and the handle 41 cannot swing in the forward direction after the movable dial 44 is inserted into the self-locking hole 23, the self-locking function is achieved; since the angle between the lower end 442 of the movable pulling piece and the horizontal end 443 of the movable pulling piece is an acute angle, when the lower end 442 of the movable pulling piece slides downward, the plane 221 of the D-shaped shaft 22 only contacts the bottom of the lower end 442 of the movable pulling piece, so that the movable pulling piece 44 slides more smoothly and has less resistance. Secondly, expand the operation of scray, only need stir button 45 upwards this moment, activity plectrum 44 also follows button 45 and moves upwards when stirring button 45, and when the lower extreme of spacing groove 4422 contacted the lower extreme of spacing bulge 412, the lower extreme 442 of activity plectrum broke away from lockhole 23, then handle 41 then can be in the same time outwards swing to relieve the auto-lock, expand the scray, whole operation process is simple swift. After the button 45 is released, the spring 43 is extended to make the movable pulling piece 44 slide downwards, and when the movable pulling piece 44 slides to the point that the upper end of the limiting bulge 412 is contacted with the upper end of the limiting groove 4422, the movable pulling piece 44 slides completely, so that the movable pulling piece 44 is always at the proper height for the next use.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. The utility model provides a scray with self-locking function, includes that one end passes through a pivot articulated last folded sheet and lower folded sheet the free end of folded sheet articulates there is a self-locking mechanism, its characterized in that down:

an opening is formed in the free end of the upper folding plate, a D-shaped shaft parallel to the rotating shaft is fixedly arranged in the opening, the surface of the D-shaped shaft comprises a plane and a first arc-shaped surface, and the plane faces the side wall of the opening and forms a self-locking hole with the side wall of the opening; the self-locking mechanism comprises a handle with a cavity, a fastening bolt fixedly arranged in the handle and a locking mechanism arranged on the fastening bolt; the buckling and locking mechanism and the fastening bolt are matched with the D-shaped shaft and the self-locking hole to realize the closed locking of the upper folding plate and the lower folding plate.

2. The folder with the self-locking function according to claim 1, wherein:

the fastening bolt is in threaded connection with a boss positioned in the handle, and the screw head of the fastening bolt is positioned above the upper surface of the boss; the locking mechanism comprises a spring, a Z-shaped movable shifting piece which can be matched with the self-locking hole in a vertically sliding manner and a button which can be used for controlling the movable shifting piece to slide vertically; the movable shifting piece comprises an upper end, a lower end and a horizontal end which is respectively connected with the upper end and the lower end, the horizontal end of the movable shifting piece is positioned on the upper surface of the boss and is sleeved on the screw rod of the fastening bolt through a through hole, and the bottom of the lower end of the movable shifting piece is provided with a second arc-shaped surface matched with the first arc-shaped surface; the spring is positioned above the horizontal end of the movable shifting piece and sleeved on the screw rod of the fastening bolt; the button is slidably disposed on a surface of the handle.

3. The folder with self-locking function as claimed in claim 2, wherein:

two sides of the lower end of the movable poking sheet are respectively concavely provided with a limiting groove; a limiting convex part which is positioned in the limiting groove and used for preventing the movable shifting piece from separating from a preset running track is integrally formed on each of two sides of the handle; and the two limiting convex parts are provided with a blocking piece for blocking the movable shifting piece from moving outwards the handle.

4. The folder with self-locking function as claimed in claim 2, wherein:

the plane of the D-shaped shaft is vertically arranged.

5. The folder with the self-locking function according to claim 4, wherein:

an included angle between the lower end of the movable shifting piece and the horizontal end of the movable shifting piece is an acute angle; an included angle between the side surface of the boss facing the lower end of the movable poking sheet and the upper surface of the boss is an acute angle; the degrees of the two included angles are equal.

6. The folder with self-locking function as claimed in claim 2, wherein:

the self-locking mechanism further comprises a set screw arranged on one side of the handle, and the set screw is used for fixing the fastening bolt.