A hinge

Abstract

The utility model belongs to the pivot technical field, concretely relates to a pivot, include: upper support, two installation parts that are respectively arranged in both end portions thereof, the lower support is hinged with the upper support, two groups of pivot assemblies are respectively installed on two installation parts, the lower support is located between two installation parts and both ends thereof are connected with two groups of pivot assemblies respectively, the upper threading hole is equipped in the upper support, the lower support includes the cylindrical connecting portion and the connecting plate connected with the cylindrical connecting portion, the lower threading hole corresponding with the upper threading hole is equipped in the cylindrical connecting portion, because the upper threading hole and the lower threading hole are equipped in the pivot, the cable is threaded, when the upper support is opened or closed relative to the lower support, the cable is not exposed, compared with the similar product of prior art, not only is favorable to preventing the cable from being damaged because of being exposed, but also the product appearance is neat.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a hinge for connecting a keyboard and a tablet protective case that facilitates cable threading and has a wider opening angle. Background Technology

[0002] Currently, tablets such as iPads are widely used due to their portability and ability to handle some work. However, these tablets lack a direct keyboard connection. While touch operation is convenient for entertainment, a keyboard is clearly more convenient and efficient for work, especially text input. Therefore, users purchase protective cases and keyboards to use with their tablets. During use, the tablet is fixed to the inner surface of the upper shell of the protective case, and the keyboard is fixed to the lower shell. The keyboard and the upper shell of the protective case are connected by a hinge. Currently, the cables connecting the tablet and keyboard (used for signal transmission, such as display and control signals) pass through the side of the protective case, leaving them exposed. This is unsightly and can easily accelerate cable wear. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a hinge for connecting a keyboard and a tablet protective case.

[0004] The technical solution is as follows: A rotating shaft includes: an upper bracket and two mounting portions respectively located at its two ends; a lower bracket hinged to the upper bracket and two sets of rotating shaft assemblies respectively mounted on the two mounting portions; the lower bracket is located between the two mounting portions and its two ends are respectively connected to the two sets of rotating shaft assemblies; an upper wire-passing hole is provided in the upper bracket; the lower bracket includes a columnar connecting portion and a connecting plate connected to the columnar connecting portion, and a lower wire-passing hole corresponding to the upper wire-passing hole is provided in the columnar connecting portion.

[0005] Preferably, the threaded hole includes a first through hole disposed in the columnar connecting part and a second through hole disposed in the connecting plate and communicating with the first through hole; the connecting plate is provided with a notch, and the opening of the second through hole is located in the bottom surface of the notch.

[0006] Preferably, each end of the columnar connecting part is provided with an axial mounting hole, and the two rotating shaft assemblies are respectively connected to the two axial mounting holes; the mounting part is cylindrical, the columnar connecting part is located between the two mounting parts, and the two ends of the columnar connecting part are respectively connected to the two mounting parts through two sets of rotating shaft assemblies.

[0007] Preferably, each set of rotating shaft assemblies includes: a rotating shaft with one section inserted into one of the mounting portions and the other section inserted into one of the axial mounting holes; a limiting portion radially disposed on the circumferential surface of the rotating shaft; a self-locking concave wheel sleeved on the rotating shaft and located inside the mounting portion and fixedly connected to the mounting portion; and a limiting block disposed on one end face of the self-locking concave wheel for limiting the rotating shaft; when the rotating shaft rotates relative to the self-locking concave wheel, the limiting block moves between the two limiting surfaces on the limiting portion.

[0008] Preferably, the angle α between the two limiting facades is ≤180 degrees.

[0009] Preferably, each set of rotating shaft assemblies further includes: a columnar spring, a flat washer, a cam plate, and a locking nut sleeved on the rotating shaft and located in the mounting part; one surface of the cam plate is in contact with the other end face of the self-locking concave wheel; one surface of the flat washer is in contact with the other surface of the cam plate and both are linked with the rotating shaft; the columnar spring is located between the other surface of the flat washer and the locking nut.

[0010] Preferably, the cam plate is circular, and two evenly distributed self-locking protrusions are provided on the surface of the cam plate that is in contact with the other end face of the self-locking concave wheel, and two evenly distributed interlocking blocks are provided on the other surface of the cam plate; two self-locking grooves are provided in the other end face of the self-locking concave wheel, which correspond to the two self-locking protrusions respectively.

[0011] Preferably, the self-locking concave wheel is integrally formed from a concave wheel body sleeved on a rotating shaft and a disc perpendicularly disposed at one end of the concave wheel body; the limiting block is disposed on the end face of the concave wheel body; the self-locking groove is disposed within the surface of the disc; one end of each self-locking groove is flush with the circumferential surface of the disc, and the other end is flush with the inner wall of the central hole of the disc; both sides of the self-locking groove are inclined surfaces.

[0012] Preferably, one end face of each self-locking protrusion is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate, while the other end is flush with the inner wall of the central hole in the cam plate; one end face of each interlocking block is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate.

[0013] Preferably, the flat gasket is circular and has two interlocking grooves on its circumference that are respectively engaged with the interlocking block.

[0014] Technical benefits: The rotating shaft of this utility model is provided with an upper wire hole and a lower wire hole for the cable to pass through. When the upper bracket is open or closed relative to the lower bracket, the cable will not be exposed. Compared with existing similar products, this not only helps to prevent the cable from being damaged due to exposure, but also makes the product look neat. Attached Figure Description

[0015] Figure 1 This is a front view of an embodiment of the present utility model;

[0016] Figure 2 This is a top view of an embodiment of the present utility model;

[0017] Figure 3 This is a left view of an embodiment of the present utility model;

[0018] Figure 4 This is a top perspective view of an embodiment of the present utility model;

[0019] Figure 5 This is a rear perspective view of an embodiment of the present utility model;

[0020] Figure 6 This is an exploded view of an embodiment of the present utility model;

[0021] Figure 7 This is a cross-sectional view of an embodiment of the present utility model;

[0022] Figure 8 This is a perspective view of the self-locking concave wheel and cam plate combined according to an embodiment of the present utility model;

[0023] Figure 9 This is a schematic diagram of the upper support rotating 120 degrees relative to the lower support in an embodiment of the present invention;

[0024] Figure 10 This is a perspective view of the lower support of an embodiment of the present utility model.

[0025] Reference numerals: Upper bracket-1, Mounting part-101, Upper wire hole-102, Connecting column-103, Lower bracket-2, Columnar connecting part-201, Axial mounting hole-201a, Connecting plate-202, Notch-202a, Lower wire hole-203, First through hole-203a, Second through hole-203b, Rotating shaft-3, Limiting part-301, Limiting surface-301a, Self-locking concave wheel-4, Limiting block-401, Self-locking groove-402, Concave wheel body-403, Disc-404, Columnar spring-5, Flat washer-6, Fitting groove-601, Cam plate-7, Self-locking protrusion-701, Fitting block-702, Locking nut-8. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-6As shown, this utility model embodiment provides a hinge, including: an upper bracket 1, two mounting portions 101 respectively located at its two ends; a lower bracket 2 hinged to the upper bracket, and two sets of hinge assemblies respectively mounted on the two mounting portions; the lower bracket is located between the two mounting portions and its two ends are respectively connected to the two sets of hinge assemblies; an upper cable hole 102 is provided in the upper bracket 1; the lower bracket 2 includes a columnar connecting portion 201 and a connecting plate 202 connected to the columnar connecting portion, and a lower cable hole 203 corresponding to the upper cable hole 102 is provided in the columnar connecting portion. Here, a connecting post 103 with several built-in threaded holes is provided on one surface of the upper bracket 1 for connecting to the upper shell of the tablet protective cover; the upper cable hole 102 and the lower cable hole 203 correspond to each other, meaning that the cable passes through both simultaneously; the mounting portion 101 is integrally formed with the upper bracket 1; the lower bracket 2 is connected to the keyboard. When threading the cable, the cable connecting the tablet and the keyboard passes through the upper threading hole 102 and the lower threading hole 203 in sequence, which can both achieve the connection function and hide the cable.

[0028] like Figures 6-7 , Figure 10 As shown, specifically, the underpass hole 203 includes a first through hole 203a provided in the columnar connecting part 201 and a second through hole 203b provided in the connecting plate 202 and communicating with the first through hole; the connecting plate is provided with a notch 202a, and the opening of the second through hole is located in the bottom surface of the notch, that is, when in use, the cable passes through the notch 202a.

[0029] To install two sets of rotating shaft assemblies, each end of the columnar connecting part 201 is provided with an axial mounting hole 201a, and the two rotating shaft assemblies are respectively connected to the two axial mounting holes; specifically, the mounting part 101 is cylindrical, the columnar connecting part 201 is located between the two mounting parts, and both ends of the columnar connecting part are respectively connected to the two mounting parts through two sets of rotating shaft assemblies, such as... Figure 2 As shown.

[0030] like Figure 6 , Figure 10 As shown, each set of rotating shaft assemblies includes: a rotating shaft 3, one section of which is inserted into one of the mounting portions 101 and the other section of which is inserted into one of the axial mounting holes 201a, for example, one section of the rotating shaft of the rotating shaft assembly located on the left is inserted into the axial mounting hole 201a located on the left; a limiting portion 301 provided radially on the circumferential surface of the rotating shaft; a self-locking concave wheel 4 sleeved on the rotating shaft and located inside the mounting portion and fixedly connected to the mounting portion; and a limiting block 401 provided on one end face of the self-locking concave wheel for limiting the rotating shaft; when the rotating shaft rotates relative to the self-locking concave wheel, the limiting block moves between the two limiting surfaces 301a on the limiting portion 301.

[0031] The angle α between the two limiting surfaces 301a is ≤180 degrees. Here, the lower support 2 is connected to two rotating shafts 3, and when the shafts rotate, the lower support rotates accordingly. The self-locking concave wheel 4 is fixedly connected to the mounting part, so the rotating shaft can rotate relative to the self-locking concave wheel. The limiting block moves between the two limiting surfaces 301a on the limiting part 301. Therefore, the angle of rotation of the rotating shaft and the lower support 2 relative to the upper support 1 is no greater than 180 degrees. Figure 3 As shown, this is a 0-degree closed state; as Figure 9 As shown, the upper support 1 is rotated 120 degrees counterclockwise relative to the lower support 2. Obviously, within the range of 0-180 degrees, there is no limit to the angle of counterclockwise rotation of the upper support 1 relative to the lower support 2, which can be adjusted according to the user's needs. The hinge has a wider range of adjustable range, which is beneficial for users to adjust the angle between the tablet and the keyboard in different scenarios, and has the effect of convenient use.

[0032] like Figure 6 As shown, each set of rotating shaft assemblies also includes: a columnar spring 5, a flat washer 6, a cam 7, and a locking nut 8, which are sleeved on the rotating shaft 3 and located in the mounting part 101; one surface of the cam 6 is in contact with the other end face of the self-locking concave wheel 4; one surface of the flat washer is in contact with the other surface of the cam 6 and both are linked with the rotating shaft, that is, when the rotating shaft 3 rotates, the cam 6 rotates relative to the self-locking concave wheel 4; the columnar spring 6 is located between the other surface of the flat washer and the locking nut.

[0033] The cam plate 7 is circular, and its surface that mates with the other end face of the self-locking concave wheel 4 has two evenly distributed self-locking protrusions 701. The other surface of the cam plate has two evenly distributed interlocking blocks 702. The other end face of the self-locking concave wheel 4 has two self-locking grooves 402, each corresponding to one of the two self-locking protrusions. With this structure, because the columnar spring 5 is elastic, the pressure of the cam plate 7 against the self-locking concave wheel 4 can be adjusted by tightening or loosening the locking nut 8. Simultaneously, the pressure from the columnar spring 5 generates torque between the cam plate 7 and the self-locking concave wheel 4. The greater the pressure of the cam plate 7 against the self-locking concave wheel 4, the greater the relative rotational torque between them, and the more severe the wear. "Evenly distributed" means that the interlocking blocks 702 are located at two equally spaced positions on the other surface of the cam plate; the same applies to the self-locking protrusions 701.

[0034] The flat washer 6 here is used to radially fix the flat washer 6 to prevent it from rotating relative to the rotating shaft 3, while increasing the wear resistance of the cam plate 7. Specifically, the flat washer 6 is circular and has two interlocking grooves 601 in its circumference that are respectively engaged with the interlocking block 702.

[0035] like Figure 6As shown, specifically, the self-locking concave wheel 4 is integrally formed from a concave wheel body 403 sleeved on the rotating shaft 3 and a disc 404 vertically disposed at one end of the concave wheel body; the limiting block 401 is disposed on the end face of the concave wheel body 403; the self-locking groove 402 is disposed within the surface of the disc 404; one end of each self-locking groove is flush with the circumferential surface of the disc, and the other end is flush with the inner wall of the central hole of the disc; both sides of the self-locking groove are inclined surfaces. Corresponding to the case where both sides of the self-locking groove are inclined surfaces, both sides of the self-locking protrusion 701 are also inclined surfaces. The purpose of setting the inclined surfaces is that when the cam plate 7 rotates relative to the self-locking concave wheel 4, when one side of the self-locking protrusion 701 reaches one side of the self-locking groove 402, under the pressure of the columnar spring plate 5, the self-locking protrusion automatically enters the self-locking groove, that is, the inclined surface here plays a guiding role, such as Figure 8 As shown.

[0036] One end face of each self-locking protrusion 701 is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate 7, while the other end is flush with the inner wall of the central hole in the cam plate; one end face of each interlocking block 702 is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate 7.

[0037] In the above description, it should be noted that the terms "installation", "connection", "connection" and other related terms should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; "set at" should be understood as "installed at" or "set at", including installation methods such as fixed installation and movable installation.

[0038] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Any equivalent structures made based on the description and drawings of this utility model, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A rotating shaft, comprising: The upper bracket (1) has two mounting portions (101) respectively located at its two ends; the lower bracket (2) is hinged to the upper bracket and has two sets of rotating shaft assemblies respectively mounted on the two mounting portions; the lower bracket is located between the two mounting portions and its two ends are respectively connected to the two sets of rotating shaft assemblies; characterized in that an upper wire hole (102) is provided in the upper bracket (1); the lower bracket (2) includes a columnar connecting portion (201) and a connecting plate (202) connected to the columnar connecting portion, and a lower wire hole (203) corresponding to the upper wire hole (102) is provided in the columnar connecting portion.

2. A rotating shaft as described in claim 1, characterized in that, The lower through hole (203) includes a first through hole (203a) provided in the columnar connecting part (201) and a second through hole (203b) provided in the connecting plate (202) and communicating with the first through hole; the connecting plate is provided with a notch (202a), and the opening of the second through hole is located in the bottom surface of the notch.

3. A rotating shaft as described in claim 1, characterized in that, The columnar connecting part (201) has an axial mounting hole (201a) at each end, and the two rotating shaft assemblies are respectively connected to the two axial mounting holes; the mounting part (101) is cylindrical, the columnar connecting part (201) is located between the two mounting parts, and the two ends of the columnar connecting part are respectively connected to the two mounting parts through two sets of rotating shaft assemblies.

4. A rotating shaft as described in claim 3, characterized in that, Each set of rotating shaft assemblies includes: a rotating shaft (3) with one section inserted into one of the mounting portions (101) and the other section inserted into one of the axial mounting holes (201a); a limiting portion (301) radially disposed on the circumferential surface of the rotating shaft; a self-locking concave wheel (4) sleeved on the rotating shaft and located inside the mounting portion and fixedly connected to the mounting portion; and a limiting block (401) disposed on one end face of the self-locking concave wheel for limiting the rotating shaft; when the rotating shaft rotates relative to the self-locking concave wheel, the limiting block moves between the two limiting surfaces (301a) on the limiting portion (301).

5. A rotating shaft as described in claim 4, characterized in that, The angle a between the two limiting facades (301a) is ≤180 degrees.

6. A rotating shaft as described in claim 4, characterized in that, Each set of rotating shaft assemblies also includes: a columnar spring (5), a flat washer (6), a cam (7), and a locking nut (8) sleeved on the rotating shaft (3) and located in the mounting part (101); one surface of the cam is in contact with the other end face of the self-locking concave wheel (4); one surface of the flat washer is in contact with the other surface of the cam and both are linked with the rotating shaft; the columnar spring is located between the other surface of the flat washer and the locking nut.

7. A rotating shaft as described in claim 6, characterized in that, The cam plate (7) is circular, and two evenly distributed self-locking protrusions (701) are provided on the surface of the cam plate that is in contact with the other end face of the self-locking concave wheel (4). Two evenly distributed interlocking blocks (702) are provided on the other surface of the cam plate. Two self-locking grooves (402) are provided in the other end face of the self-locking concave wheel (4), which correspond to the two self-locking protrusions respectively.

8. A rotating shaft as described in claim 7, characterized in that, The self-locking concave wheel (4) is integrally formed from a concave wheel body (403) sleeved on the rotating shaft (3) and a disc (404) vertically disposed at one end of the concave wheel body; the limiting block (401) is disposed on the end face of the concave wheel body (403); the self-locking groove (402) is disposed in the surface of the disc (404); one end of each self-locking groove is flush with the circumferential surface of the disc, and the other end is flush with the inner wall of the central hole of the disc; both sides of the self-locking groove are inclined surfaces.

9. A rotating shaft as described in claim 8, characterized in that, One end face of each self-locking protrusion (701) is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate (7), while the other end is flush with the inner wall of the central hole in the cam plate; one end face of each interlocking block (702) is an arc-shaped surface and is flush with the outer circumferential surface of its cam plate (7).

10. A rotating shaft as described in claim 9, characterized in that, The flat pad (6) is circular and has two interlocking grooves (601) on its circumference that are respectively engaged with the interlocking block (702).

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