Hinge

Hinge structure

This creation is about a hinge structure, especially a hinge structure for mobile phones, PDAs and other portable electronic devices with automatic opening function.

At present, conventional mobile phones are generally classified into three types: straight type, flip type and folding type according to their appearance and structure. The flip-type and foldable mobile phones usually include a fixed part and an opening and closing part. The opening and closing part is rotatably connected to the fixed part by a hinge structure along its opening and closing direction, and is positioned by the hinge structure.

U.S. Patent No. 6,292,980 discloses a conventional hinge structure, which includes a cam with a crest surface, a shaft with a trough surface, and a spring to force the crest surface of the cam and the trough surface of the shaft to come into close contact, and the cam, Both the rotating shaft and the spring are contained in a shell. The opening and closing part of a flip-type and foldable mobile phone can move relative to the wave crest surface of the cam and the wave trough surface of the rotating shaft by overcoming the elastic force of the spring, so that the opening and closing part rotates around the fixed part of the mobile phone along its opening and closing direction. However, when using a mobile phone with this conventional hinge structure, the user usually needs to cooperate with both hands to open the opening and closing part of the mobile phone, which makes it impossible for the user to perform one-handed operation when answering or making calls, especially in some occasions. It is extremely inconvenient to use, such as in a crowded bus or when holding something with one hand.

In view of this, it is necessary to provide a hinge structure with simple structure, convenient operation and automatic opening function to realize one-handed operation.

The purpose of this creation is to provide a hinge structure with simple structure, convenient operation and automatic opening function.

The creative hinge structure includes a central shaft, a rotating cam, a follower cam, a first elastic member, a sleeve tube, a second elastic member, a stopper and a button, wherein one end of the central shaft is provided with an external thread , The rotating cam is provided with internal threads, the follower cam is symmetrically provided with two clamping grooves, the sleeve includes a clamping block, the stop includes a first through hole and a second through hole, the button includes a top post, and the central axis in turn Passing through the first through hole of the rotating cam, the follower cam, the first elastic member, the sleeve, the second elastic member and the stopper, the outer thread of the center shaft is matched with the inner thread of the rotating cam, and the two ends of the first elastic member are respectively Push against the outer thread of the central shaft and one end of the sleeve. The two ends of the second elastic piece push against the follower cam and the stopper respectively. The top post acts on the other end of the casing through the second through hole of the stopper.

Compared with the prior art, this creative hinge structure releases the axial action of an elastic element on a rotating cam and a follower cam by pressing a button, and realizes screw transmission by the threaded connection between the rotating cam and the central shaft. The above-mentioned axial action is further transformed into rotation, so that the structure of the creative hinge structure is simple, easy to operate, and has an automatic opening function, which can realize one-handed operation to open the opening and closing part of a mobile phone.

Please refer to the first and second figures. When the creative hinge structure 10 is used for a folding or flip-type mobile phone with an opening and closing part and a fixed part (not shown), it includes a central shaft 20 and a rotating part 30. A first elastic member 40, a sleeve 50, a second elastic member 60, a stop 70, and a button 80, wherein the rotating member 30, the two elastic members 40 and 60, the sleeve 50, the stop 70 and The buttons 80 are all sleeved with a central shaft 20 and assembled in one body, and the central shaft 20 and the rotating part 30 are connected by a screw thread.

Please also refer to the third figure. The middle shaft 20 of the creative hinge structure 10 includes a shaft 21. One end of the shaft 21 is provided with an external thread 211, and the other end of the shaft 21 is provided with a slot 212 and a sliding groove 213.

The rotating member 30 is received in the corresponding receiving slot of the opening and closing part of the mobile phone and can move in the axial direction. The rotating member 30 includes a rotating cam 31 and a follower cam 32. The rotating cam 31 is a cylinder, which includes a first central through hole 311 and a first cam surface 312. The inner surface of the first central through hole 311 is provided with an internal thread 313, and the outside of the rotating cam 31 is provided with a plurality of protrusions 314 , Is used to restrict the rotation of the rotating member 30 in the receiving slot of the opening and closing part of the mobile phone. The follower cam 32 is also a cylindrical body, which includes a second central through hole 321 and a second cam surface 322. The second central through hole 321 and the first central through hole 311 are coaxially and communicate with each other. One end of the hole 321 is symmetrically provided with two engaging grooves 323, and the second cam surface 322 is used to cooperate with the first cam surface 312 of the rotating cam 31.

The first elastic member 40 can be a coil spring, which is sleeved with the central shaft 20 and is received in the two central through holes 311 and 321 of the rotating member 30, and one end of the spring abuts against the outer thread 211 of the central shaft 20.

The sleeve 50 is sleeved on the central shaft 20 and can be slid in the axial direction. The block 511 is used to cooperate with the engaging groove 323 of the follower cam 32. The outer diameter of the rear end 52 of the sleeve 50 is larger than the inner diameter of the second central through hole 312, and a boss 522 is formed between it and the front end 51 to restrict the rear The end 52 enters the second central through hole 312.

The second elastic member 60 can be a coil spring with a sleeve 50 sleeved thereon and one end abuts against the follower cam 32.

The stopper 70 is used to press against the other end of the second elastic member 60, and is fixed in the corresponding receiving slot in the fixed part of the mobile phone, and includes a coaxial with the two central through holes 311, 321 of the rotating member 30 A first through hole 71 and two second through holes 72 are provided.

The button 80 includes a central hole 81 arranged coaxially with the first through hole 71 of the stop 70, two top posts 82, and a baffle 83. The two top posts 82 and the second second through hole 72 of the stop 70 are arranged correspondingly , A positioning block 84 (please refer to the fourth figure) is arranged in the central hole 81, which cooperates with the sliding groove 213 of the central shaft 20 to limit the axial movement range of the button 80. The button 80 can extend outward from a through hole formed in one of the side walls of the mobile phone, and the baffle 83 cooperates with the inner side of the side wall to restrict the button 80 to the inside of the mobile phone.

Please refer to the fourth and fifth figures together. The assembly structure of the hinge structure 10 of this invention is as follows. The central shaft 20 passes through the first and second central through holes 311, 321 of the rotating member 30, the first elastic member 40, and the sleeve in turn. 50. The second elastic member 60, the first through hole 71 of the stop 70, and the central hole 81 of the button 80. Among them, a snap ring 90 is clamped in the groove 212 of the central shaft 20 and abuts against a surface of the stop 70, the outer thread 211 of the central shaft 20 and the inner thread in the first central through hole 311 of the rotating cam 31 of the rotating member 30 313, the top post 82 of the button 80 is received in the second through hole 72 of the stop 70 and abuts against the rear end 52 of the sleeve 50. At this time, the second elastic member 60 is in a contracted state, and it abuts against the rotating member 30 The follower cam 32 generates an axial force, and because the internal thread 313 of the rotating cam 31 of the rotating member 30 cooperates with the external thread 211 of the shaft 21 of the central shaft 20, the rotating member 30 moves in the axial direction. The tendency of rotation is that because the clamping block 511 of the sleeve 50 is clamped in the engaging groove 323 of the follower cam 32, the sleeve 50 restricts the rotating member 30 and prevents it from moving.

When in use, if the user needs to operate the opening and closing part of the mobile phone with one hand, he only needs to press the button 80. The top post 82 of the button 80 presses against the rear end 52 of the sleeve 50 to slide in the axial direction and compress the first elastic member 40. , The clamping block 511 at the front end 51 of the sleeve 50 will escape from the engaging groove 323 in the second central through hole 321 of the follower cam 32. At this time, the movement of the rotating member 30 will not be restricted by the sleeve 50, and it will be in the first The two elastic members 60 move in the axial direction under the action of the elastic release force. Because the rotating cam 31 of the rotating member 30 and the central shaft 20 cooperate with the inner and outer threads 313 and 211 to realize the screw transmission, the rotating member 30 is in the axial direction. The movement also rotates around the central shaft 20 until the engaging slot 323 of the follower cam 32 again receives and engages the clip 511 of the sleeve 50, and thereby drives the opening and closing part to rotate to realize the opening of the opening and closing part.

It can be understood that when the above-mentioned opening and closing portion is closed by external force, the rotating cam 31 rotates together with the opening and closing portion and simultaneously moves in the axial direction. Therefore, the sleeve 50 restricts the follower cam 32 and prevents it from rotating with the rotating cam 31 and can only slide in the axial direction. At this time, the rotating cam 31 cooperates with the second cam surface 322 of the following cam 32 through the first cam surface 312 The follower cam 32 is forced to slide in the axial direction and compress the second elastic member 60. When the first wave crest structure 3121 of the first cam surface 312 crosses the second wave crest structure 3221 of the second convex surface 322, it will generate a direction toward the follower cam 32. The second wave trough structure 3222 continues to move. At this time, the rotating cam 31 will continue to rotate without external force and the follower cam 32 will slide in the axial direction until the second wave peak structure 3221 of the follower cam 32 falls to the rotating cam again The first trough structure 3122 of 31, the engaging groove 323 of the follower cam 32 will again receive and engage the clamp 511 of the sleeve 50 and return to the initial state. Therefore, when the user closes the above-mentioned opening and closing part, the opening and closing part only needs to be rotated to a certain angle by external force, and the opening and closing part will automatically rotate to the closed state.

It can be understood that the second elastic members 40 and 60 of the present creation can be replaced by other elastic bodies such as elastic sponges. In addition, the rotating cam 31 and the follower cam 32 of the rotating part 30 of this creation can also be formed into one body, that is, the rotating part 30 is only a rotating sleeve, which includes a central through hole, and the central through hole includes an internal thread and a With a slot, the rotating member 30 can cooperate with the above-mentioned center shaft 20, the two elastic members 40 and 60, the sleeve 50, the stop 70 and the button 80 to realize the automatic opening function.

In summary, this creation meets the requirements of a new patent, and Yan filed a patent application in accordance with the law. However, the above-mentioned are only the preferred embodiments of this creation, and the scope of this creation is not limited to the above-mentioned embodiments. Anyone who is familiar with the technique of this case makes equivalent modifications or changes based on the spirit of this creation. Should be covered in the scope of the following patent applications.

<p>10. . . Hinge structure</p><p>20. . . Bottom axis</p><p>twenty one. . . Shaft</p><p>211. . . External thread</p><p>212. . . Card slot</p><p>213. . . Chute</p><p>30. . . Rotating parts</p><p>31. . . Rotating cam</p><p>311. . . The first center through hole</p><p>312. . . First cam surface</p><p>3121. . . First wave crest structure</p><p>3122. . . First trough structure</p><p>313. . . internal thread</p><p>314. . . Bump</p><p>32. . . Follower cam</p><p>321. . . Second center through hole</p><p>322. . . Second cam surface</p><p>3221. . . Second crest structure</p><p>3222. . . Second trough structure</p><p>323. . . Card slot</p><p>40. . . First elastic piece</p><p>50. . . casing</p><p>51. . . front end</p><p>511. . . Jam</p><p>52. . . rear end</p><p>522. . . Boss</p><p>60. . . Second elastic piece</p><p>70. . . Stoppers</p><p>71. . . First through hole</p><p>72. . . Second through hole</p><p>80. . . button</p><p>81. . . Center hole</p><p>82. . . Top pillar</p><p>83. . . Baffle</p><p>84. . . Positioning block</p><p>90. . . Snap ring</p>

The first picture is a three-dimensional schematic diagram of the hinge structure of this creation;

The second figure is an exploded schematic diagram of the hinge structure of this creation;

The third figure is an exploded schematic diagram of the hinge structure of this creation from another angle;

The fourth figure is a schematic cross-sectional view of the hinge structure in the first figure along the IV-IV direction;

The fifth figure is a partial cross-sectional view of the hinge structure in the first figure.