CN213958444U

CN213958444U - Screen folding mechanism

Info

Publication number: CN213958444U
Application number: CN202023127656.XU
Authority: CN
Inventors: 王鹤
Original assignee: Tianjin Yujin Robot Technology Co ltd
Current assignee: Tianjin Yujin Robot Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-13
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a screen folding mechanism, which comprises a left hinge, a right hinge, a left expansion plate, a linkage gear, a gear connecting rod, a right expansion plate, a fixed column, a pin column, a fixed column cover plate, a meshing gear cover plate, a left fixed wing and a right fixed wing; the left expansion plate is arranged on the left hinge, the right part of the left expansion plate is a linkage section with a linkage rack on the bottom surface, the linkage gear is respectively meshed with the linkage rack and the left hinge transmission rack, and the linkage gear is rotationally connected with the fixed column through a gear connecting rod; the right expansion plate is connected in the same way; when the hinge rotates downwards, the transmission rack drives the linkage gear to rotate so as to drive the linkage section to move towards the direction close to the fixed column, namely, the linkage section is kept synchronous with the position changes of the inner side and the outer side of the bending section. The utility model discloses make the rotatory feel of screen more lubricated, not only showing and improving operation experience, still reduced manufacturing cost by a wide margin, be applicable to including folding cell-phone any need carry out the folding technique to the screen in.

Description

Screen folding mechanism

Technical Field

The utility model belongs to the technical field of communication, especially indicate a screen folding mechanism.

Background

With the technology of the flexible folding screen becoming mature, the updating speed of electronic products is accelerated, and flexible folding terminal products will be the future development trend of electronic products. The folding mobile phone adopts a continuous and foldable flexible screen, a special folding mechanism is arranged in a bending deformation part of the screen, the folding mechanism enables the mobile phone to be like a transformer, the screen is still the size of the traditional mobile phone when being combined, the mobile phone is convenient to carry, and the folding mobile phone becomes a tablet personal computer when being unfolded, has the functions of entertainment and office, and meets the requirements that consumers seek portability and various and unified functions. In addition to the flexible AMOLED screen being a breakthrough key for folding mobile phones, the screen folding structure is also a bottleneck for development. In the existing folding mode, no matter the screen is folded inwards or outwards, after the screen is folded, the folded part still needs to keep a certain R angle, otherwise, the screen can be damaged. Since the inner side of the bend is slightly extended and the outer side is slightly shortened during bending, the folding structure must be changed synchronously, otherwise the screen is damaged. Chinese patent application No. 201920305522.0 discloses a foldable display device, wherein the length of the foldable plates is long, and the foldable plates are fixed to each other through two ends, so that the foldable display device is easy to be folded and warped during folding and cannot be kept flat. Chinese patent application No. 201910789479.4 discloses a folding display device and folding cell-phone, through setting up roating seat, driving medium, connecting seat, actuating lever and the interlock pole that links aforementioned three, make the connecting seat when rotating, make the actuating lever rotate naturally and drive the driving medium and remove at the roating seat, and then give the connecting seat through the linkage of interlock pole, make the position between the folding hinge both sides connecting seat produce relative change, and then adjust the folding screen and cause the length variation of inside and outside cambered surface because of folding, avoid damaging. However, because the position change between the connecting seats on the two sides is adjusted by the folding hinge, the folding hinge is easy to clamp during transmission, the rotation of the folding screen is not smooth, the operation experience of consumers is influenced, the structure of the folding chain is fine, a specific slide rail needs to be correspondingly arranged, and the processing cost of the folding chain and the slide rail is high, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Although the folding mechanism that has now can adapt to folding screen folding back inside length diminish, this change of outside length increase, avoid damaging folding screen, but its rotation is not lubricated, the smoothness nature is poor, user experience is not good enough, and the processing cost is high moreover. In order to solve the above-mentioned defects, the utility model provides a screen folding mechanism.

The technical scheme of the utility model is realized like this:

a screen folding mechanism comprising: the left hinge, the right hinge, the left expansion plate, the right expansion plate, the fixed column, the linkage gear, the gear connecting rod, the pin column, the fixed column cover plate, the meshing gear cover plate, the left fixed wing and the right fixed wing;

the left end of the left hinge is provided with a sliding table, the upper end and the lower end of the sliding table are bent to form two opposite sliding grooves, an elastic clamping structure and a left hinge transmission rack are arranged on the upper surface of the sliding table, and the right end of the left hinge is provided with a plurality of left hinge guide teeth;

the left expansion plate is arranged on the sliding table through an elastic clamping structure, the upper end and the lower end of the left expansion plate can slide or stay in the two sliding grooves, the right part of the left expansion plate is a linkage section, the bottom surface of the linkage section is provided with a linkage rack, a linkage gear is arranged between the linkage rack and a left hinge transmission rack, the linkage gear is rotatably connected with the fixed column through a gear connecting rod, and the linkage gear is respectively meshed with the linkage rack and the left hinge transmission rack;

the left end of the right hinge is provided with a plurality of right hinge guide teeth, the structure of the right end of the right hinge guide teeth is the same as that of the sliding table, and the right expansion plate is arranged at the right end of the right hinge and is connected in the same way as the left expansion plate;

the fixing column comprises a connecting column, the upper surface of the connecting column is a plane, a plurality of connecting teeth are arranged below the plane, pin column fixing seats are respectively arranged in the head connecting tooth and the tail connecting tooth, and an accommodating groove is formed between two adjacent connecting teeth at the bottom;

a plurality of stop blocks are arranged on the fixed column cover plate;

the upper end face and the lower end face of the left end of the left fixed wing are respectively provided with a longitudinal first limiting column, the right end of the left fixed wing is fixedly provided with a left meshing gear, and the left fixed wing is provided with a left transverse limiting waist-shaped hole;

a right meshing gear is fixed at the left end of the right fixed wing, longitudinal second limiting columns are respectively arranged on the upper end surface and the lower end surface of the right end of the right fixed wing, and a right transverse limiting waist-shaped hole is formed in the right fixed wing;

the bottom of the left hinge is provided with a left fixed wing installation groove, two inner walls opposite to the left fixed wing installation groove are respectively provided with a longitudinal limiting chute, a right fixed wing installation groove with the same structure is arranged at the corresponding position of the right hinge, and the left fixed wing installation groove and the right fixed wing installation groove are both provided with a transverse limiting column; the left fixed wing is arranged in the left fixed wing mounting groove, the first limiting column is positioned in the longitudinal limiting chute, the right fixed wing is correspondingly arranged in the right fixed wing mounting groove, and the two transverse limiting columns are respectively positioned in the left transverse limiting waist-shaped hole and the right transverse limiting waist-shaped hole;

the connecting column is arranged on the left hinge and the right hinge in a pressing mode, the connecting teeth are arranged in a hollow mode and are formed by the left hinge guide teeth and the right hinge guide teeth, the fixed column cover plate is fixedly connected with the bottom surface of the connecting column to form a slide way, the pin column penetrates through the slide way, two ends of the pin column are fixedly connected with the two pin column fixing seats, and the left hinge and the right hinge are in sliding fit with the pin column through the left hinge guide teeth and the right hinge guide teeth respectively; left side meshing gear and right side meshing gear set up in the holding tank, meshing gear apron and the bottom surface fixed connection of holding tank.

Preferably, be equipped with the installation axle on the linkage gear, the installation axle rotates with gear connecting rod's one end to be connected, and gear connecting rod's the other end rotates with the fixed column to be connected.

More preferably, the left side of fixed column is equipped with and is used for rotating the left connecting seat of being connected with gear connecting rod, and the right side correspondence is equipped with right connecting seat.

Most preferably, the elastic clamping structure comprises a containing part, a wheel rim installing shaft, a wheel rim, a pressing platform and elastic pieces, wherein the wheel rim installing shaft, the wheel rim, the pressing platform and the elastic pieces are arranged in the containing part; the bottom surfaces of the upper end and the lower end of the left expansion plate are respectively provided with a slide way, and on the inner side surface of the slide way at the upper end, the left expansion plate is clamped into the fixing nest through the upper part of the wheel rim to realize the connection with the sliding table.

The utility model discloses a gear drive has replaced traditional hinge drive, and the linkage structure through the precision calculation makes the upper and lower surface of screen can take place relative length change along with different folding angles, keeps relative position unchangeable then with the screen, can keep the screen flat at any time in the upset. Compared with the prior art, the utility model discloses a rotatory feeling is more lubricated, not only is showing the operation that has improved the user and is experiencing, has still reduced manufacturing cost by a wide margin, has realized the superelevation price/performance ratio, is applicable to including folding cell-phone, any needs carry out folding communication field to the screen.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of the components of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

fig. 4 is a first perspective view of the present invention;

fig. 5 is a second perspective view of the present invention.

In the figure: 1. a left hinge; 11. a sliding table; 111. a chute; 112. a receptacle portion; 113. a left hinge transmission rack; 114. a wheel rim mounting shaft; 115. a rim; 116. pressing the table; 117. an elastic member; 12. a left hinge guide tooth; 13. a left fixed wing mounting groove; 131. a longitudinal limiting chute; 14. a transverse limiting column; 2. a right hinge; 3. a left expansion plate; 31. a linkage section; 32. a linkage gear; 33. a gear connecting rod; 4. a right expansion plate; 5. fixing a column; 51. a connecting tooth; 52. a left connecting seat; 53. a right connecting seat; 54. accommodating grooves; 55. a pin fixing seat; 56. connecting columns; 6. a fixed column cover plate; 61. a stop block; 7. a meshed gear cover plate; 8. a left fixed wing; 81. a longitudinal first limiting column; 82. a left meshing gear; 9. a right fixed wing; 91. a longitudinal second limiting column; 92. and a right meshed gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, 2, and 3 in common: a screen folding mechanism comprising: the hinge comprises a left hinge 1, a right hinge 2, a left expansion plate 3, a linkage gear 32, a gear connecting rod 33, a right expansion plate 4, a fixed column 5, a pin column, a fixed column cover plate 6, an engaged gear cover plate 7, a left fixed wing 8 and a right fixed wing 9; the left end of the left hinge 1 is provided with a sliding table 11, the upper end and the lower end of the sliding table 11 are bent to form two opposite sliding grooves 111, the upper surface of the sliding table 11 is provided with an elastic clamping structure and a left hinge transmission rack 113, and the right end of the left hinge 1 is provided with a plurality of left hinge guide teeth 12; the left expansion plate 3 is arranged on the sliding table 11 through an elastic clamping structure, the upper end and the lower end of the left expansion plate 3 can slide or stay in the two sliding grooves 111, the right part of the left expansion plate 3 is a linkage section 31, the bottom surface of the linkage section 31 is provided with a linkage rack, a linkage gear 32 is arranged between the linkage rack and a left hinge transmission rack 113, the linkage gear 32 is rotatably connected with the fixed column 5 through a gear connecting rod 33, and the linkage gear 32 is respectively meshed with the linkage rack and the left hinge transmission rack 113; the left end of the right hinge 2 is provided with a plurality of right hinge guide teeth, the structure of the right end is the same as that of the sliding table 11, the right expansion plate 4 is arranged at the right end of the right hinge 2, and the connection mode of the right expansion plate 4 and the right hinge 2 is the same as that of the left expansion plate 3 and the left hinge 1; the fixed column 5 comprises a connecting column 56, the upper surface of the connecting column 56 is a plane, a plurality of connecting teeth 51 are arranged below the plane, pin column fixing seats 55 are respectively arranged in the head connecting teeth 51 and the tail connecting teeth 51, and an accommodating groove 54 is formed between the two adjacent connecting teeth 51 at the bottom; a plurality of stop blocks 61 (when the left hinge 1 and the right hinge 2 rotate to be horizontal, the left hinge 1 and the right hinge 2 are prevented from further rotating at a negative angle) are arranged on the fixed column cover plate 6; a longitudinal first limiting column 81 is respectively arranged on the upper end surface and the lower end surface of the left end of the left fixed wing 8, a left meshing gear 82 is fixed on the right end, and a left transverse limiting kidney-shaped hole is arranged on the left fixed wing 8; a right meshing gear 92 is fixed at the left end of the right fixed wing 9, a longitudinal second limiting column 91 is respectively arranged on the upper end surface and the lower end surface of the right end, and a right transverse limiting kidney-shaped hole is formed in the right fixed wing 9;

a left fixed wing installation groove 13 is formed in the bottom of the left hinge 1, longitudinal limiting sliding grooves 131 are formed in two inner walls, opposite to the left fixed wing installation groove 13, of the left fixed wing respectively, right fixed wing installation grooves with the same structure are formed in corresponding positions of the right hinge 2, and transverse limiting columns 14 are arranged on the left fixed wing installation groove 13 and the right fixed wing installation grooves respectively; the left fixed wing 8 is arranged in the left fixed wing mounting groove 13, the first limiting column 81 is positioned in the longitudinal limiting sliding groove 131, the right fixed wing 9 is correspondingly arranged in the right fixed wing mounting groove, and the two transverse limiting columns 14 are respectively positioned in the left transverse limiting waist-shaped hole and the right transverse limiting waist-shaped hole;

the connecting column 56 is arranged on the left hinge 1 and the right hinge 2 in a pressing mode, the connecting teeth 51 are inserted into a neutral gear formed by the left hinge guide teeth 12 and the right hinge guide teeth, the fixed column cover plate 6 is fixedly connected with the bottom surface of the connecting column 56 to form a slide way, the pin column penetrates through the slide way, two ends of the pin column are fixedly connected with the two pin column fixing seats 55, and the left hinge 1 and the right hinge 2 are respectively in sliding fit with the pin column through the left hinge guide teeth 12 and the right hinge guide teeth; the left engaging gear 82 and the right engaging gear 92 are disposed in the receiving groove 54, a groove (not shown) for placing an engaging gear shaft is disposed in the receiving groove 54, and after the engaging gear cover plate 7 is fixedly connected to the bottom surface of the receiving groove 54, the left engaging gear 82 and the right engaging gear 92 can rotate and engage in the receiving groove 54.

The working principle is as follows: the below of left hinge 1 forms lower left connecting seat, the upper left extending plate 3 of top forms upper left connecting seat, when left hinge 1 rotates downwards, left hinge transmission rack 113 drives linkage gear 32 and rotates, then drive the linkage rack with linkage gear 32 meshing to the direction motion of being close to fixed column 5, left extending plate inward movement has finally been realized, the extension of slight relative distance takes place for lower left connecting seat (the outside of corresponding bending), the shortening of slight relative distance takes place for upper left connecting seat (the inboard of corresponding bending), change when bending with the screen keeps synchronous, help constantly to keep the screen of folding screen flat. The structure of the right hinge 2 is similar to that of the left hinge 1, the distance adjusting mechanism is the same, and the change can be generated when the hinge rotates. Because the bottom of left hinge 1 and right hinge 2 is equipped with left stationary vane 8 and right stationary vane 9, through gear engagement between left stationary vane 8 and the right stationary vane 9, consequently, same angle of rotation can be realized with right hinge 2 to left hinge 1. Longitudinal first limiting columns 81 are arranged on the upper end surface and the lower end surface of the left end of the left fixed wing 8 and used for guaranteeing the stability of the left fixed wing 8 in the longitudinal direction when moving, and a transverse limiting column 14 is arranged in the left transverse limiting waist-shaped hole and used for limiting the transverse moving range of the left fixed wing 8; the same applies to the principle of arrangement of the right stationary vane 9.

For the installation of convenient linkage gear 32, as an optimal technical scheme, the utility model discloses a further embodiment is equipped with the installation axle on the linkage gear 32, and the fixed left connecting seat 52 that is equipped with in left side of spliced pole 56, the right side correspondence is equipped with right connecting seat 53, and the installation axle rotates with gear connecting rod 33's one end to be connected, and gear connecting rod 33's the other end rotates with left connecting seat 52 through the round pin axle to be connected. The structure of the linkage gear 32 on the right hinge 2 is the same as above.

As a preferred technical solution, in another embodiment of the present invention, the elastic clamping structure includes a receiving portion 112, a rim mounting shaft 114, a rim 115, a pressing platform 116 and elastic members 117, the rim mounting shaft 114, the rim 115, the pressing platform 116 and the elastic members 117 are disposed in the receiving portion 112, a notch is disposed at an upper portion of the receiving portion 112, the rim 115 is disposed adjacent to the notch through the rim mounting shaft 114, the upper portion of the rim 115 passes through the notch and is located outside the receiving portion 112, a lower portion of the rim is in contact with one end of the pressing platform 116, and the elastic members 117 are disposed at the other end of the pressing platform 116; the bottom surfaces of the upper end and the lower end of the left expansion plate 3 are respectively provided with a slide way, the inner side surface of the slide way at the upper end is provided with a fixing socket (not shown in the figure), and the left expansion plate 3 is clamped into the fixing socket through the upper part of the rim 115 to realize the connection with the sliding table 11. The setting purpose of the elastic clamping structure is as follows: firstly, in order to realize the connection between the left expansion plate 3 and the sliding table 11 of the left hinge 1 (or the connection between the right expansion plate 4 and the corresponding sliding table on the right hinge 2); secondly, when the left expansion plate 3 slides laterally on the sliding table 11, the upper portion of the rim 115 compresses the slide way so that the upper and lower ends of the left expansion plate 3 are elastically clamped in the sliding groove 111 to slide.

As shown in fig. 4 (front perspective view) and fig. 5 (rear perspective view): in order to connect with the screen, a plurality of welding holes used for connecting with the screen, the circuit board and the like and waist-shaped holes convenient to follow the parts are arranged on the left expansion plate 3, the right expansion plate 4 and the fixing column 5, so that description is omitted, the positions of various holes are not limited, and the holes can be flexibly arranged according to actual needs. In a similar way, the concrete number and structure of the connecting tooth 51 below the fixed column 5, the left hinge guide tooth 12 of the left hinge 1, and the right hinge guide tooth of the right hinge 2 can be flexibly selected according to actual needs by technical personnel in the field, and these are not the utility model discloses the scope of claim.

The above description is only a preferred embodiment of the present invention, and the terms "left", "right", "up", "down", and the like are used herein for convenience of describing the structure of the present invention and are not intended to limit the present invention; the structures not described in detail above all adopt the prior art that can realize the functions; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A screen folding mechanism which is characterized in that: the method comprises the following steps: the hinge comprises a left hinge (1), a right hinge (2), a left expansion plate (3), a linkage gear (32), a gear connecting rod (33), a right expansion plate (4), a fixed column (5), a pin column, a fixed column cover plate (6), a meshing gear cover plate (7), a left fixed wing (8) and a right fixed wing (9);

a sliding table (11) is arranged at the left end of the left hinge (1), the upper end and the lower end of the sliding table (11) are bent to form two opposite sliding grooves (111), an elastic clamping structure and a left hinge transmission rack (113) are arranged on the upper surface of the sliding table (11), and a plurality of left hinge guide teeth (12) are arranged at the right end of the left hinge (1);

the left expansion plate (3) is arranged on the sliding table (11) through the elastic clamping structure, the upper end and the lower end of the left expansion plate (3) can slide or stay in the two sliding grooves (111), the right part of the left expansion plate (3) is a linkage section (31), a linkage rack is arranged on the bottom surface of the linkage section (31), a linkage gear (32) is arranged between the linkage rack and a left hinge transmission rack (113), the linkage gear (32) is rotatably connected with the fixed column (5) through a gear connecting rod (33), and the linkage gear (32) is respectively meshed with the linkage rack and the left hinge transmission rack (113);

the left end of the right hinge (2) is provided with a plurality of right hinge guide teeth, the structure of the right end is the same as that of the sliding table (11), the right expansion plate (4) is arranged at the right end of the right hinge (2), and the connection mode of the right expansion plate (4) and the right hinge (2) is the same as that of the left expansion plate (3) and the left hinge (1);

the fixing column (5) comprises a connecting column (56), the upper surface of the connecting column (56) is a plane, a plurality of connecting teeth (51) are arranged below the plane, pin column fixing seats (55) are respectively arranged in the head connecting tooth (51) and the tail connecting tooth (51), and an accommodating groove (54) is formed between two adjacent connecting teeth (51) at the bottom;

a plurality of stop blocks (61) are arranged on the fixed column cover plate (6);

a longitudinal first limiting column (81) is arranged on the upper end surface and the lower end surface of the left end of the left fixed wing (8), a left meshing gear (82) is fixed on the right end, and a left transverse limiting waist-shaped hole is formed in the left fixed wing (8);

a right meshing gear (92) is fixed at the left end of the right fixed wing (9), a longitudinal second limiting column (91) is respectively arranged on the upper end surface and the lower end surface of the right end, and a right transverse limiting waist-shaped hole is formed in the right fixed wing (9);

a left fixed wing mounting groove (13) is formed in the bottom of the left hinge (1), two opposite inner walls of the left fixed wing mounting groove (13) are respectively provided with a longitudinal limiting sliding groove (131), a right fixed wing mounting groove with the same structure is formed in the corresponding position of the right hinge (2), and transverse limiting columns (14) are arranged on the left fixed wing mounting groove (13) and the right fixed wing mounting groove; the left fixed wing (8) is arranged in the left fixed wing mounting groove (13), the first limiting column (81) is positioned in the longitudinal limiting sliding groove (131), the right fixed wing (9) is correspondingly arranged in the right fixed wing mounting groove, and the two transverse limiting columns (14) are respectively positioned in the left transverse limiting waist-shaped hole and the right transverse limiting waist-shaped hole;

the connecting column (56) is pressed on the left hinge (1) and the right hinge (2), the connecting teeth (51) are inserted into a neutral gear formed by the left hinge guide teeth (12) and the right hinge guide teeth, the fixed column cover plate (6) is fixedly connected with the bottom surface of the connecting column (56) to form a slide way, the pin column penetrates through the slide way, two ends of the pin column are fixedly connected with the two pin column fixing seats (55), and the left hinge (1) and the right hinge (2) are respectively in sliding fit with the pin column through the left hinge guide teeth (12) and the right hinge guide teeth; the left meshing gear (82) and the right meshing gear (92) are arranged in the accommodating groove (54), and the meshing gear cover plate (7) is fixedly connected with the bottom surface of the accommodating groove (54).

2. The screen folding mechanism of claim 1, characterized in that: the linkage gear (32) is provided with an installation shaft, the installation shaft is rotatably connected with one end of the gear connecting rod (33), and the other end of the gear connecting rod (33) is rotatably connected with the fixing column (5).

3. The screen folding mechanism of claim 2, characterized in that: the left side of the connecting column (56) is provided with a left connecting seat (52) which is used for being rotationally connected with the gear connecting rod (33), and the right side is correspondingly provided with a right connecting seat (53).

4. The screen folding mechanism according to any one of claims 1 to 3, characterized in that: the elastic clamping structure comprises an accommodating part (112), a rim mounting shaft (114), a rim (115), a pressing table (116) and elastic pieces (117), wherein the rim mounting shaft (114), the rim (115), the pressing table (116) and the elastic pieces (117) are arranged in the accommodating part (112), a notch is formed in the upper part of the accommodating part (112), the rim (115) is arranged close to the notch through the rim mounting shaft (114), the upper part of the rim (115) penetrates through the notch and is positioned outside the accommodating part (112), the lower part of the rim (115) is in contact with one end of the pressing table (116), and the elastic pieces (117) are arranged at the other end of the pressing table (116); the bottom surfaces of the upper end and the lower end of the left expansion plate (3) are respectively provided with a slide way, the inner side surface of the slide way at the upper end is provided with a fixing socket, the left expansion plate (3) is clamped into the fixing socket through the upper part of the wheel rim (115) to realize the connection with the sliding table (11).