CN105979032B - Folding mechanism and mobile terminal - Google Patents

Abstract

The invention provides a folding mechanism which comprises a first support body, a second support body, a connecting body and a rotating part, wherein the rotating part comprises two rotating rods and a worm wheel, and the two rotating rods, the worm wheel, the worm, the limiting base, a supporting plate, two limiting sliding sheets and two springs are meshed with the worm wheel; the limiting base comprises two through holes which are adjacently arranged, each through hole is convexly provided with a first transmission bulge at the periphery, a second transmission bulge is arranged on one surface of each limiting slip sheet, the supporting plate and the limiting base are sequentially sleeved on the two worms, the limiting base is fixed with the supporting plate, one limiting slip sheet and the spring are accommodated in one end of each rotating rod, the two rotating rods are respectively sleeved on the two worms and can drive the worms to rotate, the first transmission bulge is meshed with the second transmission bulge, the transmission part is arranged on the connecting body, the connecting body is positioned between the first supporting body and the second supporting body, and the two rotating rods are respectively slidably arranged on the first supporting body and the second supporting body. The invention also provides a mobile terminal.

Description

Folding mechanism and mobile terminal

technical field

The invention relates to the technical field of communication, in particular to a folding mechanism and a mobile terminal with the folding mechanism.

Background technique

Flexible screens are flexible display screens, which have the characteristics of light weight, unbreakable, and bending properties, and have become the future development direction of the display industry. How to combine flexible screens with electronic products to realize large-size display screens and at the same time meet the overall compact structure and portability has become the direction that R&D personnel in the industry have been working on.

At present, flexible screens have been applied to mobile terminals to achieve the purpose of folding large screens. Generally, the terminal product is divided into two parts and folded by a folding device. After the terminal product is unfolded, the flexible screen can be seen. When the terminal product is unfolded, the two halves of the connecting body are flipped over, but it is difficult to achieve simultaneous flipping, and the mobile terminal cannot be improved. Use experience.

Contents of the invention

In view of this, the present invention provides a folding mechanism for synchronous folding and a mobile terminal.

To achieve the above object, the present invention provides a folding mechanism, which includes a first support body, a second support body, a connecting body and a rotating part, the rotating part includes two rotating rods, two worms, a worm wheel, a position limiting Seat, support plate, two limit slides and two springs; the two worms are located on both sides of the worm wheel and engaged with the worm wheel, and the limit base includes two adjacent through holes, so One surface of the position-limiting base is located on the periphery of each of the through holes, and a first transmission protrusion is protruded, one surface of each position-limiting slide is provided with a second transmission protrusion, and the support plate The position-limiting base is sequentially placed on the two worms, the support plate is fixedly connected to the connecting body, the position-limiting base is fixed to the support plate, and the inside of one end of each rotating rod accommodating a limit slide and the spring, the limit slide limits the spring in the rotating rod;

The two rotating rods are respectively sleeved on the two worms and can drive the worms to rotate, wherein the limit slides and the springs accommodated in the rotating rods are both sleeved on the worms; the first transmission The protrusion is engaged with the second transmission protrusion, and the limiting slide can slide along the worm and rotate along the worm with the rotating rod; the transmission part is mounted on the connecting body , the connecting body is located between the first supporting body and the second supporting body, and the two rotating rods are respectively slidably mounted on the first supporting body and the second supporting body.

Wherein, the rotating part further includes a first pressing plate and a second pressing plate; the supporting plate is located between the worm wheel and the limiting base, and the first pressing plate is sleeved on one end of the worm provided with a gear, The second pressing plate is sleeved on one end of the worm passing through the rotating rod, and the first pressing plate, the supporting plate and the second pressing plate are fixed by locking pieces.

Wherein, the rotating part further includes two clamping springs, and the two clamping springs limit the first pressing plate and the second pressing plate to the worm respectively.

Wherein, the first pressing plate and/or the second pressing plate are a part of the connecting body.

Wherein, there are two rotating parts, and they are respectively mounted on opposite ends of the connecting body.

Wherein, the limit slide is provided with a shaft hole, and the end of the rotating rod that accommodates the limit slide is provided with a shaft hole, and the shaft hole of the rotating rod and the inner wall of the shaft hole of the limit slide Both are provided with a limiting concave surface, and the outer peripheral surface of the worm is provided with a limiting rib along the axial direction to engage with the limiting concave surface of the shaft hole of the rotating rod and the limiting slide.

Wherein, the connecting body is provided with a mounting groove, and a plugboard is protruded in the mounting groove perpendicular to the length direction of the connecting body, the rotating part is installed in the mounting groove, and the axial direction of the worm The length of the connecting body is the same, and the insertion plate is inserted into the gap between the two rotating rods to limit the rotating part in the installation groove.

Wherein, one end of each rotating rod is provided with a first positioning body, one side of the first supporting body is provided with a first slot relative to the rotating rod on one side of the connecting body, and one side of the second supporting body is The rotating rod on the other side of the connecting body is provided with a second slot, and a second positioning body is arranged in the first slot and the second slot, and the first positioning body cooperates with the second positioning body To limit the rotation rod to slide out of the first support body and the second support body.

Wherein, the folding mechanism further includes a first baffle and a second baffle, a groove is provided on a surface of the connecting body, the first baffle is rotatably installed in the first support body, and the The second baffle is rotatably installed in the second support body, and the free ends of the first baffle and the second baffle are located on the connecting body and can rotate relative to the connecting body and extend into the groove resist against the groove wall of the groove.

The present application provides a mobile terminal, which includes a flexible screen and the folding mechanism, the flexible screen is mounted on the first support body and the second support body, and the flexible screen bending area and the folding mechanism The connectors are arranged oppositely.

The folding mechanism described in this application has a process of meshing with the limiting base through the limiting spring and compresses the spring to generate a certain resistance, so that the mobile terminal will not loosen when it is opened or closed, and the user's experience of the terminal is improved.

Description of drawings

In order to more clearly illustrate the structural features and functions of the present invention, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is an exploded schematic view of the rotating part and the connecting body of the folding mechanism provided by the present invention.

FIG. 2 is an exploded schematic view of the rotating part of the folding mechanism shown in FIG. 1 .

FIG. 3 is a schematic diagram of the assembly of the rotating part and the connecting body of the folding mechanism shown in FIG. 1 .

FIG. 4 is a structural schematic diagram of the first support body and the second support body of the folding mechanism shown in FIG. 1 .

Fig. 5 is a schematic structural diagram of the mobile terminal of the present invention.

specific embodiment

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Specific embodiments of the present invention provide a folding mechanism and a mobile terminal having the folding mechanism. The mobile terminal may be a tablet computer, a mobile phone, an electronic reader, a remote controller, a personal computer (Personal Computer, PC), a notebook computer, a vehicle-mounted device, an Internet TV, a wearable device, and the like.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the folding mechanism includes a first supporting body 10 , a second supporting body 15 , a connecting body 18 and a rotating part 20 . The rotating part 20 includes two rotating rods 21 , two worms 22 , a worm wheel 23 , a limiting base 24 , a supporting plate 25 , two limiting slides 26 and two springs 27 . The two worms 22 are located on both sides of the worm wheel 23 and engaged with the worm wheel 22, the limiting base 24 includes two adjacent through holes 241, one surface of the limiting base 24 is located on A first transmission protrusion 243 protrudes from a periphery of each through hole 241 . A surface of each limiting slide 26 is provided with a second transmission protrusion (not shown), and the support plate 25 and the limiting base 24 are sequentially sleeved on the two worms 22, so that The support plate 25 is fixedly connected to the connecting body 18 , and the position limiting base 24 is fixed to the support plate 25 .

One end of each rotating rod 21 accommodates a limiting slide 26 and the spring 27 , and the limiting sliding piece 26 limits the spring 27 in the rotating rod 21 . The two rotating rods 21 are respectively sleeved on the two worms 22 and can drive the worms 22 to rotate. Wherein the limiting slide 26 and the spring 27 accommodated in the rotating rod 21 are both sleeved on the worm 22; the first transmission protrusion 243 is engaged with the second transmission protrusion, and the limiting The bit slide 26 can slide along the worm 22 and can rotate along with the rotating rod 21 along the worm 22 . The first transmission protrusion 243 is engaged with the second transmission protrusion. The transmission part 20 is installed on the connecting body 18, the connecting body 18 is located between the first supporting body 10 and the second supporting body 15, and the two rotating rods 21 are respectively slidably mounted on the connecting body 18. On the first support body 10 and the second support body 15. In this embodiment, there are two rotating parts 20 , and they are respectively mounted on opposite ends of the connecting body 18 .

As shown in Figure 1, in this embodiment, the connecting body 18 is a strip-shaped plate body, a strip-shaped groove 181 is provided in the middle of one surface, and installation grooves 182 are provided at both ends of the connecting body 18. The installation groove 182 is connected with the groove 181 . The installation groove 182 is perpendicular to the length direction of the connecting body 18, and a flashing plate 183 is protruded. The lengths are the same, and the insertion plate 183 is inserted into the gap between the two rotating rods 21 to limit the rotating part 20 in the installation groove 182 . Wherein, two sides of the installation groove 182 are provided with gaps 184 through which the two rotating rods 21 of the rotating part 20 pass. The inserting plate 183 is inserted into the gap between the ends of the two rotating rods 21 sleeved on the worm.

Referring to FIG. 2 , in this embodiment, the rotating part 20 further includes a first pressing plate 28 and a second pressing plate 29 . The support plate 25 is located between the worm wheel 23 and the position-limiting base 24, the first pressing plate 28 is set on one end of the worm 22 provided with a gear, and the second pressing plate 29 is set on the worm 22 passes through one end of the rotating rod 21, and the first pressing plate 28, the supporting plate 25 and the second pressing plate 29 are fixed by locking members. Described locking member is pin, rivet etc., and it passes through described first pressing plate 28, supporting plate 25 and second pressing plate 29 and fixes the three, and then described worm wheel 23, worm screw 22, limit base 24 , support plate 25, two limit slides 26 and two springs 27 and the rotating rod 21 are fixed, so that the rotating part 20 constitutes a complete and separately detachable assembly, which is convenient to assemble with the connecting body 18, and the rotating part 20 itself The structure is compact and the rotation effect is better. It can be understood that the first pressing plate 28 and the second pressing plate 29 are part of the installation groove 182 . Both the worm 22 and the worm wheel 23 are rotatably mounted on the groove wall of the mounting groove 182 of the connecting body 18 to realize rotation and support to the rotating part 20 . The support plate 25 is fixed on the mounting groove 182 through a connecting piece such as a pin. This kind of assembly reduces the parts of the rotating part 20 and takes up less space.

In this embodiment, one end of each worm 22 is provided with a gear meshing with the worm wheel 23 , and the other end is a rotating section 221 . The outer peripheral surface of the rotating section 221 is axially provided with two opposite limiting ribs, so that the cross section of the worm includes a quadrilateral with two parallel sides and two arc sides. One end of the rotating rod 21 is provided with a receiving groove (not shown in the figure), and the groove wall of the receiving groove is provided with a shaft hole 211 penetrating through the rotating rod 21 and a limiting chute (not shown in the figure). The limiting slide 26 is in the shape of a thin sheet, and its outer peripheral edge is provided with a limiting edge 264 for clamping with the limiting chute so that the limiting sliding piece 26 can slide axially in the accommodating groove and cooperate with it. The rotating rods 21 rotate simultaneously. The inner wall of the shaft hole 211 of the rotating rod 21 is provided with two limiting concave surfaces 213 . The inner wall of the shaft hole 261 of the limiting sliding piece 26 is provided with two limiting concave surfaces 262 . The outer peripheral surface of the worm 22 is provided with two limiting convex surfaces to engage with the limiting concave surfaces of the shaft holes of the rotating rod and the limiting slide. The axial hole 261 of the limiting slide 26 and the axial hole 211 of the rotating rod 21 have the same cross-sectional shape.

Please refer to FIG. 3 , the two sides of the support body 25 are provided with notches (not shown) for covering the worm 22 . The limiting slide 26 is sleeved on the worm 22 through the shaft hole 261 . The second transmission protrusion is disposed around the through hole 261 . The spring 27 is a coil spring. The first transmission protrusion 243 and the second transmission protrusion are annular cam surfaces formed by a plurality of wedge-shaped protrusions and recesses arranged at intervals. The supporting body 25, the limiting base 24, the limiting slide 26 and the spring 27, the rotating rod 21 are sequentially placed on the rotating section 221 of the worm 22, the spring 27 is in a free state, and resists the rotating section 221 of the worm 22. The limiting slide 26 is engaged with the limiting base.

The limiting slide 26 is arranged coaxially with the rotating rod 21, and a limiting convex surface of the worm 22 is engaged with a limiting concave surface of the limiting sliding piece 26 and a limiting concave surface of the rotating rod 21 , the two rotating rods 21 are relatively closed. When the two rotating rods 21 are relatively rotated by 90 degrees, the limiting slide 26 is driven to rotate along the worm 22, and then the two worms 22 are driven to mesh with the worm wheel 23 at the same time. Rotation, in this process, because the limit base 24 is still, the limit slide 26 is in the process of rotating 90 degrees, the second transmission protrusion rotates relative to the first transmission protrusion 243, and the second transmission protrusion The protrusion on the protrusion resists the protrusion of the first transmission protrusion 243, and pushes the limit sliding plate 26 to slide along the worm wheel axial direction towards the spring 27, thereby compressing the spring, and the spring 27 will give the rotating rod 21 and The limit sliding plate 26 reverses the elastic force, and at this time, the two rotating rods 21 are relatively expanded. One limiting convex surface of the worm 22 rotates to engage with the other limiting concave surface of the limiting slide 26 and the other limiting concave surface of the rotating rod 21 .

Further, the rotating part 20 also includes two clip springs 30, and the two clip springs 30 respectively limit the first pressing plate 28 and the second pressing plate 29 on the worm 22, preventing the first pressing plate 28 and the second pressing plate 29 from The second pressing plate 29 falls off.

Please refer to FIG. 4 , in this embodiment, two first slots 12 are arranged at intervals on one side of the first supporting body 10 . One side of the second supporting body 15 is provided with two second slots 17 arranged at intervals. The first support body 10 and the second support body 15 have the same structure, and both are in the shape of a rectangular thin plate. The first support body 10 includes a first surface 11 and a first side surface connected to the first surface 11 . A first mounting plate 131 extends perpendicular to the first side at opposite ends of the first side. The two first slots 12 are formed by recessing the first side surface toward the first supporting body 10 . The second support body 15 includes a second surface 16 and a second surface connected to the second surface 16 . A second mounting plate 161 extends perpendicularly to the second surface 151 at opposite ends of the second surface. The two second slots 17 are formed by recessing the second surface toward the second supporting body 15 . The two first slots 12 are set opposite to the second slots 17 respectively. The first supporting body 10 or the second supporting body 15 is provided with a receiving space for installing a circuit board or a battery. The connecting body 18 is installed on the first support body 10 and the second support body 15 and is located between the first support body 10 and the second support body 15, specifically, the first support body 10 and the second support body 15 The first side of a supporting body 10 faces the second surface of the second supporting body 15, and the two pairs of rotating rods 22 of each rotating part 20 are installed in the corresponding first slots 12 respectively. And in the second slot 17. And the first mounting plate 131 and the second mounting plate 161 are connected to the end of the connecting body through the rotating shaft so that the first supporting body 10 and the second supporting body 15 are connected to the connecting body 18 is connected and can rotate relative to the connecting body 18.

Please refer to Fig. 4, further, the other end of each rotating rod 22 is provided with a first positioning body (not marked), and the first slot 12 and the second slot 15 are provided with a first positioning body. Two positioning bodies (not shown in the figure), the first positioning body and the second positioning body prevent the rotating rod 22 from sliding out of the first supporting body 10 and the second supporting body 15 . In this embodiment, the second positioning body is a positioning groove or a positioning protrusion provided in the first slot and the second slot, corresponding to the first slot and the second slot The first positioning body on the rotating rod is a locking protrusion or a locking groove. In this embodiment, taking the first slot 12 as an example, a positioning groove is provided on the inner wall of the first slot 12, and a positioning protrusion is provided on the side of the corresponding rotating rod 22 close to the locking position. . The first support body 10 and the second support body 15 are rotated and closed relative to the connecting body 18 through the rotating rod, the positioning groove is separated from the positioning protrusion, and the first support body 10 and the second support body 15 are relatively expanded. The positioning slot and the positioning protrusion are clamped and fixed. Wherein the positioning protrusion is made of elastic material.

It can be understood that in other embodiments different from the above-mentioned embodiments, the folding mechanism only includes one rotating part 20, and the two rotating rods of the rotating part 20 are arranged in the middle of the connecting body, and are connected with the first supporting plate and the second supporting plate. The support plate slides and cooperates to realize the unfolding and closing of the folding mechanism.

Please refer to FIG. 5 , the baffle 31 around the flexible screen 40 is a part of the folded structure, and is used to block the structure around the surface of the first support plate 10 and the second support plate 15 and serve as the screen perimeter of the mobile terminal. The flexible screen 40 is a rectangular screen, one end of which is installed on the first surface of the first support body 10 , and the other end is installed on the second surface of the second support plate 15 . The first supporting body 10 and the second supporting body 15 are rotated relative to the connecting body 18 through the rotating rod 22 . When the flexible screen 30 is opened, the first support body 10 and the second support body 15 are opened relative to each other, and the two rotating rods 21 of each rotating part 20 are pulled on the first support body 10 and the second support body 15. Sliding inside, then the first support body 10 and the second support body 15 are opened at the same time, because in the process of opening, the limit spring piece 26 has a process of engaging with the limit base 24, and the spring 27 is stretched after being compressed And the strength is transmitted to the rotating rod 21, so that the user feels better when bending and opening the flexible screen, and will not be loose.

The folding mechanism described in this application realizes the rotation of the rotating rod through gear engagement between the connecting body and the rotating rod, so as to ensure that the first support body and the second support body are turned over synchronously; The meshing process compresses the spring 27, which has a certain resistance, so that the mobile terminal will not be loose when it is opened or closed, thereby improving the user's experience with the terminal.

As shown in Figure 4, further, the folding mechanism also includes a first baffle 33 and a second baffle 34, the first baffle 33 is rotatably installed in the first support body 10, the second The baffle plate 34 is rotatably installed in the second support body 15, and the free ends of the first baffle plate 33 and the second baffle plate 34 are located in the middle of both sides of the connecting body 18 and can rotate relative to the connecting body 18 And resist the connector. Specifically, a first space is provided in the middle of the first side 13 of the first support 10, a second space is provided in the middle of the second surface 151 of the second support 15, and one end of the first baffle 33 can be The rotating one is installed in the first space, and one end of the second baffle 34 is installed in the second space. When the mobile terminal is folded, the free ends of the first baffle plate 33 and the second baffle plate 34 protrude into the groove 181 and are respectively completely attached to the inner wall of the groove 181. When the terminal is unfolded, the free ends of the first baffle 33 and the second baffle 34 are supported by the connecting body 18, so that the free ends of the first baffle 33 and the second baffle 34 support the flexible screen. The curved area is fully unfolded to ensure the flatness of the flexible screen unfolding. The first mounting plate 131 and the second mounting plate 161 butt against each other and enclose the first baffle plate 33 and the second baffle plate 34 to form a space for accommodating the connecting body 18 . Two opposite ends of the connecting body 18 are rotatably connected to the first mounting plate 131 and the second mounting plate 161 .

The above description is a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (10)

1. A kind of 1. fold mechanism, it is characterised in that the fold mechanism include the first supporter, the second supporter, connector and Rotation section, the rotation section include two rotating bars, two worm screws, worm gear, spacing pedestal, supporting plate, two spacing slide plates and Two springs；Described two worm screws are located at the worm gear both sides and engaged with the worm gear, and the spacing pedestal is adjacent including two The through hole of setting, the periphery on a surface of the spacing pedestal positioned at each through hole are convexly equipped with the first transmission projection, institute A surface for stating each spacing slide plate is provided with the second transmission projection, and the supporting plate is placed on described successively with the spacing pedestal On two worm screws, the supporting plate is fixedly connected with the connector, and the spacing pedestal is fixed with the supporting plate, described every A spacing slide plate and the spring are housed inside one rotating bar one end, the spacing slide plate is by the spring retainer in institute State in rotating bar；

   Described two rotating bars are respectively sleeved on two worm screws and worm screw can be driven to rotate, wherein being contained in the rotating bar Spacing slide plate and the spring be placed on the worm screw；First transmission is raised to engage with the described second transmission projection, And the spacing slide plate can slide along the worm screw and can be as the rotating bar rotates along the worm screw；The driving section dress In on the connector, the connector is between first supporter and second supporter, described two rotations Bar slides loaded on first supporter and second supporter respectively.
2. 2. fold mechanism according to claim 1, it is characterised in that the rotation section also includes the first pressing plate and the second pressure Plate；Between the worm gear and the spacing pedestal, first pressing plate is placed on the worm screw and is provided with gear the supporting plate One end, second pressing plate be placed on the worm screw pass through the rotating bar one end, first pressing plate, supporting plate and second Pressing plate is fixed by locking member.
3. 3. fold mechanism according to claim 2, it is characterised in that the rotation section also includes two jump rings, and described two First pressing plate and the second pressing plate are limited on the worm screw by individual jump ring respectively.
4. 4. fold mechanism according to claim 3, it is characterised in that first pressing plate and/or the second pressing plate are described A part for connector.
5. 5. fold mechanism according to claim 2, it is characterised in that the rotation section is two, and respectively loaded on described Connector opposite end.
6. 6. fold mechanism according to claim 1 or 5, it is characterised in that the spacing slide plate is provided with axis hole, the rotation The end that bar accommodates the spacing slide plate is provided with axis hole, and the shaft hole inner wall of the axis hole of the rotating bar and the spacing slide plate is all provided with Limited location concave surface, the worm screw outer peripheral face are axially provided with spacing fin and the rotating bar and the axis hole of the spacing slide plate Spacing concave surface engaging.
7. 7. fold mechanism according to claim 1 or 5, it is characterised in that the connector is provided with mounting groove, the peace Length direction in tankage perpendicular to the connector is convexly equipped with plate, and the rotation section is loaded in the mounting groove, the snail The axial direction of bar is identical with the length side of the connector, and the space that the plate is inserted between described two rotating bars is with by described in Rotation section is limited in the mounting groove.
8. 8. according to the fold mechanism described in claim any one of 1-5, it is characterised in that one end of each rotating bar is provided with First positioning body, the side of first supporter are provided with the first slot with respect to the rotating bar of connector side, described second The side of support body is provided with the second slot with respect to the rotating bar of connector opposite side, in first slot and second slot Provided with the second positioning body, first positioning body and the second positioning body coordinate to be skidded off and described first with limiting the rotating bar Support body and second supporter.
9. 9. according to the fold mechanism described in claim any one of 1-5, it is characterised in that the fold mechanism also includes first gear Plate and second baffle, the surface of connector one are provided with groove, and the first baffle is rotatably loaded on the described first support In vivo, the second baffle is rotatably loaded in second supporter, and oneself of the first baffle and second baffle By holding the cell wall that can be rotated and be stretched into the groove with the groove relative to connector on the connector to support.
10. 10. a kind of mobile terminal, it is characterised in that the mobile terminal is included described in flexible screen and claim any one of 1-9 Fold mechanism, the flexible screen is mounted on first supporter and second supporter, and the flexible screen is rolled over Curved region is oppositely arranged with the connector.