A connector and an electronic device having the connector are described. The connector includes a first connecting sheet and a second connecting sheet, each having a connecting portion and a non-connecting portion, wherein, each of the connecting portions of the first and second connecting sheets includes a plurality of teeth for mutual engagement and cooperation to effect a relative rotary motion of the first and second sheets, and each of the non-connecting portions of the first and second connecting sheets includes an external planar surface.

[0001]    This application claims priority to Chinese Patent Application No. 201410743767.3 filed on Dec. 8, 2014 the entire contents of which are incorporated herein by reference. 
       BACKGROUND 
       [0002]    The present disclosure relates to a connector and an electronic device with the connector. 
         [0003]    Connectors are widely used in various devices, for realizing the mutual rotation between the first part and the second part of the device. However, in many cases, the requirements to the rotating connector are not limited to realizing mutual rotation between two parts. For example, for a laptop, since its connector (also known as “the rotating shaft mechanism”) between its display part and the keyboard part can be observed and touched by the user, desirably, the connector should have pleasing appearance and good feeling to touch; otherwise it will affect the user experience, thereby affecting the market of the entire product. However, existing products still have large room to improve in the aforementioned aspects. 
         [0004]    Thus, there is a demand to provide an improved connector which has a pleasant appearance to the user, and the connector has smooth surface so that the user feels good when touching it and the connector undesirably scratching the user or the support surface such as a desktop may be prevented. In addition, the improved connector should be simple and easy to be manufactured. Accordingly, it is desirable to provide a device, such as an electronic device, having the improved connector as mentioned above. 
         [0005]    In addition, with the growing popularity of pad-type electronic devices, people more and more use them, for example, to watch videos. People have more requirements for the support of the pads, for example, the support should keep the electronic device easily and stably at any angle or in any posture. Therefore, the support usually has a connector, however, regarding efficiency and stability of keeping the devices at a desired angle, the current connectors of the support still have room to improve. In addition, a simple structure, pleasant appearance and ease of use, etc, are also desirable, otherwise, the user experience to the support and even to the related electronic device provided with such support will become worse. 
         [0006]    Thus, there is a demand to provide an improved support for the pad-type electronic devices, and the support can overcome at least some or all of the aforementioned disadvantages. 
       SUMMARY 
       [0007]    In a preferred embodiment of the present disclosure, it is provided a connector a first connecting sheet and a second connecting sheet, each comprising a connecting portion and a non-connecting portion, wherein, each of the connecting portions of the first and second connecting sheets includes a plurality of teeth for mutual engagement and cooperation to effect a relative rotary motion of the first and second sheets, and each of the non-connecting portions of the first and second connecting sheets includes an external planar surface. 
         [0008]    In another embodiment of the present disclosure, it is provided an electronic device, comprising: a main body; a support body for supporting the main body; and the connector according to the claim rotatably connected to the main body and the support body. 
         [0009]    It should be appreciated that above description is merely for illustrative purposes and are not intended to limit the scope of the disclosure 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a schematic three-dimensional view showing a connector according to a preferred embodiment of the present disclosure; 
           [0011]      FIG. 2  is a side view of the connector shown in  FIG. 1 ; 
           [0012]      FIG. 3  is a schematic view showing two toothed sheets engaging with each other in the connector shown in  FIG. 1 ; 
           [0013]      FIG. 4  is a partial schematic three-dimensional view showing a pad computer according to a preferred embodiment of the present disclosure; 
           [0014]      FIG. 5  is an overall three-dimensional view of the pad computer shown in  FIG. 4 , where the main body and the support body of the pad computer form an angle of 180 degrees; 
           [0015]      FIG. 6  is an overall three-dimensional view of the pad computer shown in  FIG. 4 , where the main body and the support body of the pad computer form an obtuse angle; and 
           [0016]      FIG. 7  is a side view of the pad computer shown in  FIG. 6 . 
       
    
    
     DETAILED DESCRIPTION 
       [0017]    Foregoing and other technical solutions, features and advantages of the present disclosure will become apparent from the detailed description hereinafter in conjunction with accompanying drawings. The terms, such as “on”, “under”, “left”, “right”, “front”, “back”, or the like, which are used in embodiments hereinafter, are used to indicate directions of drawings. Therefore, direction terms are for illustration purposes and are not intended to limit the present disclosure. Also, same reference numbers indicate same elements. 
         [0018]    Various exemplary embodiments of the present disclosure will be described hereinafter referring to the drawings. 
         [0019]    First, referring to  FIGS. 1-3  to describe the structure of the connector according to a preferred embodiment of the present disclosure, wherein  FIG. 1  is a schematic three-dimensional view showing the connector according to the embodiment,  FIG. 2  is a side view of the connector shown in  FIG. 1 , and  FIG. 3  is a schematic view showing two connecting sheets engaging with each other in the connector shown in  FIG. 1 . 
         [0020]    As shown in  FIG. 1 , the connector R according to this embodiment is used to realize mutual rotating between the main body  1  (schematically represented by a dashed rectangle in  FIG. 1 ) and the support body  2  (schematically represented by a dashed rectangle in  FIG. 1 ) of the electronic product. The electronic device may be, for example, a laptop, in this case, the main body  1  is a display part of the laptop, and the support body  2  is a keyboard part of the laptop. The electronic device may also be, for example, a pad computer (it will be described later in detail referring to  FIGS. 4-7 ), in this case, the main body  1  is a touch sensitive display of the pad computer, and the support body is a supporting component rotatably connected to the back of the touch sensitive display by the connector R so as to support the pad computer on the platform. It should be noted that applications of the connector are not limited to laptops and pad computers, but it can also be applied to other electronic devices, even other non-electronic devices, which all fall within the scope of inventive concept of the present disclosure. 
         [0021]    As shown in  FIGS. 1-3 , the connector R according to the exemplary embodiment is used to rotatably connect a main body  1  with a support body  2  of an electronic device, and the connector R comprises a first connecting sheet  10  and a second connecting sheet  20  engaging with each other, wherein, the peripheral edge of the first connecting sheet  10  (referred as “the first peripheral edge” hereinafter for ease of description) comprises a first connecting portion  101  having teeth and a first non-connecting portion  102  without teeth, and the second peripheral edge of the second connecting sheet  20  (referred as “the second peripheral edge” hereinafter for ease of description) comprises a second connecting portion  201  having teeth and a second non-connecting portion  202  without teeth. At least a portion of the first non-toothed portion  102  is formed as a first smooth surface  1022 , and when the connector R is mounted between the main body  1  and the support body  2  of the electronic device, the first smooth surface  1022  is exposed outward. That is, the first smooth surface  1022  may be an external planar surface. With this, since the first smooth surface is exposed outward, i.e. faces the user or is exposed to the user, the smooth surface gives the user a good visual experience, and it will feel good when the user intentionally or unintentionally touch the smooth surface. Furthermore, the connection is realized by connecting sheets and the connecting sheets can be easily manufactured from for example metal at low cost, and when the connector is made of metal, the appearance and touching feeling would be pleasant, thereby significantly enhancing the user experience. 
         [0022]    Further, alternatively or additionally, at least a portion of the second non-toothed portion  202  is formed as a second smooth surface  2022 , and when the connector R is mounted between the main body  1  and the support body  2  of the electronic device, the second smooth surface  2022  is exposed outward. That is, the second smooth surface  2022  may be an external planar surface. More particularly, referring to  FIG. 2 , the smooth surfaces  1022 ,  2022  are higher than teeth of the connecting portions  1022 ,  2022 , and therefore, when the user touches the connector with his/her hands, he or she touches the smooth surface  1022 ,  2022  more rather than teeth despite of the presence of teeth in the connector, thus has a good touching feeling. Of course, surface of each tooth may also preferably be manufactured to be smooth such that the user feels good in case touching it. 
         [0023]    It is noted that, in  FIG. 3 , the second connecting sheet  20  has a symmetrical structure, i.e., has a connecting portion  201  on the left and a connecting portion  201 ′ on the right, such symmetrical structure has some advantages in manufacture and assembling, for example, either side of the second connecting sheet  20  can cooperate with the first connecting sheet  10 , so installation is feasible from either side. However, in principle, the connecting portion  201 ′ on the right of the connecting sheet  20  does not cooperate or engage with the first connecting sheet  10 , therefore, the connecting portion  201 ′ may have no teeth on the right, but may have any other shape or structure, e.g., a semicircular shape or structure. 
         [0024]    With further reference to  FIG. 1 , the connector according to this embodiment further comprises a first shaft  31 , a second shaft  32  and a third shaft  33  parallel to each other, and the second shaft  32  is located between the first shaft  31  and the third shaft  33 . The first connecting sheet  10  has a shaft hole  103  and the second sheet  20  has two shaft holes  203  (see  FIG. 3 ).The first connecting sheet  10  is arranged as such that the first shaft  31  or the third shaft  33  goes through it, and the second connecting sheet  20  is arranged as such that the second shaft  32  and the third shaft  33  go through it, or the first shaft  31  and the second shaft  32  go through it. More particularly, some of the first connecting sheets  10  in the connector are arranged around the first shaft  31 , and the rest are arranged around the third shaft  33 , and the first connecting sheet  10  may be connected to the main body  1  or the support body  2  of the device; the second tooth sheet  20  is not directly connected the main body  1  or the support body  2  of the device but just arranged around the shafts. More specifically, see  FIG. 1 , on each of the first shaft  31 , the second shaft  32  and the third shaft  33  is alternatively provided with the first connecting sheets and the second connecting sheets in manner of one or one group (in  FIG. 1 , one group) of first connecting sheets  10 , then one or one group (in  FIG. 1 , one group) of second connecting sheets  20 , and then one or one group (in  FIG. 1 , one group) of first connecting sheets  10 , as such. With this, as shown in  FIG. 1 , these connecting sheets and shafts can be connected together only by mutually fitting between the sheets and the shafts, without the aid of any additional connecting components. Therefore, the connector of the present disclosure is simple, and this novel design in practical applications may also enable smooth rotation of the connector, and allow the user touching the smooth surface  1022 ,  2022  rather than the teeth more likely. Further, it can be seen that the connector of the present embodiment has three or at least three shafts, while that of prior art often has two shafts, and therefore, the connector of the present embodiment has a novel structure and gives a fresh appearance, thus it is more favored by users, especially young users. And, an idea of smooth surface is also included in such novel design, which solves problems of the prior art that some new designs do have novel structure but they do not give attention to the user's visual experience or touching feeling. Further, in the present embodiment, since the second connecting sheet has one more shaft hole than the first connecting sheet, i.e., in fact, the second connecting sheet is designed to be longer than the first connecting sheet in a direction perpendicular to the shaft, whereby a large area of smooth surface is easier to be realized, so that the user may have a good visual experience and touching feeling. 
         [0025]    Referring to  FIGS. 4-7 , further describe an example of the connector according to a preferred embodiment of the present disclosure applied in a pad computer, wherein  FIG. 4  shows a partial three-dimensional view of a pad computer according to a preferred embodiment of the present disclosure;  FIG. 5  shows an overall three-dimensional schematic view of the pad computer shown in  FIG. 4 , wherein the main body, i.e. the touch sensitive display and the support body forms an angle of 180 degrees;  FIG. 6  shows an overall three-dimensional schematic view of the pad computer shown in  FIG. 4 , wherein the main body and the support body are at an obtuse angle; and  FIG. 7  is a side view of the pad computer shown in  FIG. 6 . It should be noted that the connector of the present disclosure can not only be applied to a pad computer, but also can be applied to be mounted between the screen part and keyboard part of a laptop as previously described, and can also be applied to other devices, as long as the device has/needs two parts/members rotatable with each other. 
         [0026]    As shown in  FIG. 4 , the connector R as shown in  FIGS. 1-3  is rotatably connected between the main body  1 ′ (i.e. the touch sensitive display) and support body  2 ′ of the pad computer, and the support body  2 ′ and the connector R are located at the back of the pad computer. As can be seen from the figure, a smooth surface of the connector R is exposed outward, and the entire connector R has a good appearance. 
         [0027]    Referring to  FIG. 5 , the pad computer comprises two connectors R rotatably connected between the main body  1 ′ and the support body  2 ′, each of which is provided at one end of the pad computer. In the exemplary embodiment, the upper half of the main body  1 ′ (i.e. the part above a connecting line through the two connectors R in  FIG. 5 ) has a greater thickness than that of the lower half of the main body  1 ′ (i.e. the part below a connecting line through the two connectors R in  FIG. 5 ), and the thickness of the support body  2 ′ is exactly equal to the thickness difference between the upper half and the lower half of the main body  1 ′, so that when the support body  2 ′ is folded and closed onto the main body  1 ′, the entire pad computer presents a uniform thickness, which is very beautiful, and facilitates the pad computer lying on a support platform such as desktop. Of course, the present disclosure is not limited thereto, and the support body  2 ′ may have other shapes and sizes. 
         [0028]    Continuing to refer to  FIG. 5 , the pad computer according to this embodiment further comprises a cover  40  which covers the outer side of the main body  1 ′ and the outer side of the support body  2 ′ together, but does not cover the first smooth surface and the second smooth surface of the connector R. Of course, the cover  40  of the present disclosure may only expose one of the first smooth surface and the second smooth surface of the connector R. Preferably, the cover is of an integral structure and may be made of leather, rubber, cloth, carbon fiber, plastic or metal or a combination thereof. Thus, in the help of the cover  40 , the entire pad computer of the present invention looks more beautiful and expensive, and has good wear resistance. 
         [0029]    Referring to  FIGS. 6 and 7 , it can be seen that the pad computer may be supported at any desired angle by adjusting the angle of the support body  2 ′ relative to the main body of the main body  1 ′. By means of the connector R of the present disclosure, the support body  2 ′ can rotate 0-360 degrees smoothly, and the pad computer of the present disclosure is more beautiful and durable thanks to the cover  40  of the present disclosure. 
         [0030]    Finally, it should be noted that, although in the various embodiments, the present disclosure has been described in the specification and are illustrated in the accompanying drawings, those skilled in the art will appreciate that the above-described embodiments are merely preferred embodiments, and some technical features in the embodiments may be not necessary for solving a specific technical problem, which can be removed or omitted without affecting the resolution to the technical problems; also, features, elements and/or functions of one embodiment can be combined, composited, cooperated with features, elements and/or functions of one or more other embodiments, unless the combination, composition or cooperation cannot be implemented.