CN103687372B - An electronic device and a hinge used for the electronic device - Google Patents

Abstract

The invention discloses an electronic device, which comprises a first body, a second body and a connecting piece, wherein the first body is provided with a first connecting hole; wherein, the first surface shell of the second body is provided with a groove; the connecting piece is connected with the first body and the second body so that the relative position state of the first body and the second body is converted between an opening state and a closing state; and is configured to: the second surface shell of the first body is in contact with the first surface shell of the second body in the closed state, and the connecting piece is accommodated in the groove, so that the connecting piece is hidden in the electronic equipment and is not perceived by a user at any angle. On the basis, the invention also provides a hinge applied to the electronic equipment, which can ensure that the outer sides of the two bodies do not form any externally exposed interface through structural improvement.

Description

An electronic device and a hinge used for the electronic device

technical field

The invention relates to the field of electronic technology, in particular to an electronic device and a hinge used for the electronic device.

Background technique

With the development of science and technology and the gradual improvement of user needs, the optimized design of different types of electronic products is constantly being introduced. On the one hand, reducing the exposed interface of electronic equipment in the non-use state has become a mainstream design trend, so as to prevent dust and particles from falling into the exposed interface and affect its normal use, and at the same time improve the appearance of electronic products.

For example, a signal port, a power port, or an exposed interface formed by a hinge connection structure; in particular, the exposed interface at the hinge connection position is formed based on the limitations of the existing hinge structure, and there is no need for external functions in any use state.

On the other hand, miniaturization and integration of electronic equipment has become another product design trend that people are pursuing. For electronic products that use connectors to realize the hinge of the first body and the second body to realize opening and closing, such as notebook computers, netbooks, and electronic dictionaries, etc., based on the limitations of the structure and arrangement of the hinges used, the electronic products of this type The thin and light design is also limited accordingly.

Specifically, electronic products require peripheral ports to establish connections with the outside world for electrical signals, network signals, and data signals. The necessary peripheral ports and existing hinge settings directly affect the thin and light design of such electronic products. Taking a notebook computer as an example, for the design where the hinge axis is located at the lower position of the notebook body, the upper screen in the use state is turned backward as a whole, and the port cannot be set at the rear end of the lower body. The port is set on the side of the lower body; obviously, the side of the lower body cannot be made very thin under the premise of taking into account the practicability of the port and the integrity of the design.

In addition, for the existing design in which the hinge axis is arranged at the rear end of the screen, the peripheral port can be arranged at the rear end, and the side can be designed with a thinner shape. However, limited by the thinner screen and the hinges of the existing structure, a large gap will be formed between the upper body and the lower body, and the dust will directly affect the performance and appearance after falling.

In view of this, it is urgent to find another way to optimize the design of the existing electronic equipment and its connecting hinges. On the basis of satisfying the ultra-thin design, a large gap between the first body and the second body can be avoided.

Contents of the invention

In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide an electronic device composed of a first body and a second body. Through structural improvement, it can be ensured that no externally exposed interface will be formed on the outside of the two bodies. not noticed by the user. On this basis, the present invention also provides a hinge applied to the electronic device.

The electronic equipment provided by the present invention includes a first body, a second body and a connecting piece; wherein, the first surface shell of the second body has a groove; the connecting piece is connected to the first body and the connecting piece The second body is connected so that the relative position state of the first body and the second body is switched between an open state and a closed state; and is configured to: the second body of the first body located in the closed state The two-surface shell is in contact with the first surface shell of the second body, and the connecting piece is accommodated in the groove, so that the connecting piece is hidden in the electronic device and the The above connection is not perceived by the user at any angle.

Preferably, the connecting piece includes a hinged first hinge body and a second hinge body; the hinged side of the second body extends upward to form a connecting portion for hinged with the hinged side of the first body; The connector is built into the electronic device, and the first body in the closed state is flush with the upper surface of the connecting part; wherein, the upper surface of the connecting end of the first hinge body is flush with the upper surface of the first hinge body. The hinged side of a body is fixedly connected; the upper surface of the connecting end of the second hinge body is fixedly connected to the connecting portion of the second body; the other end of the first hinge body is connected to the other end of the second hinge body The insertion forms a sliding fit pair, and the relative sliding displacement track of the two is in the shape of an arc concentric with the hinged rotation center, and is configured such that from the initial position of the displacement track to the end position, the matching range of the sliding fit pair is gradually decreasing. trend change.

Preferably, the sliding fit pair is formed between the arc-shaped inner chamber provided on the body of the first hinged body and the body of the arc-shaped second hinged body matched therewith.

Preferably, there is a frictional damping structure between the arc-shaped inner chamber of the first hinge body and the body of the arc-shaped second hinge body, so as to maintain the relative position between the two.

Preferably, a metal elastic member is arranged between the two hinged bodies, the fixed end of the metal elastic member is connected to one of the two, and the movable end of the metal elastic member is pressed against the other, so as to transmit signals.

Preferably, the outer surfaces of the first body and the second body are provided with a continuous cladding layer.

Preferably, one end of the connector is hinged to the connection end of the second body, and the groove extends from the connection end to the middle of the first surface shell of the second body; the connection The other end of the piece is hinged to the middle part of the second surface shell of the first body.

The hinge for electronic equipment provided by the present invention includes two hinge bodies that can rotate relatively, and is used for connecting the first body and the second body of the electronic equipment; the connecting end of the first hinge body is used for connecting with The first body is fixedly connected; the connection end of the second hinge body is used for fixed connection with the second body; the other end of the first hinge body is inserted into the other end of the second hinge body A sliding fit pair is formed, and the relative sliding displacement track of the two is in the shape of an arc concentric with the hinged rotation center, and is arranged in such a way that: from the initial position of the displacement track to the end position, the matching range of the sliding fit pair shows a decreasing trend .

Preferably, the sliding fit pair is formed between the arc-shaped inner chamber provided on the body of the first hinged body and the body of the arc-shaped second hinged body matched therewith.

Preferably, the connecting ends of the first hinged body and the second hinged body both have attachment seats for connection, and the working end surfaces of the first attachment seat and the second attachment seat at the initial position are in the same horizontal plane.

Preferably, in a projection plane perpendicular to the hinge rotation center, the center of gravity of the second accessory seat is located inside the arc-shaped displacement track.

Preferably, a reinforcing rib is provided between the second accessory seat extending to the inner side of the connection end and the second hinged body below it, and the first hinged body at the corresponding position is provided with a hole communicating with the arc-shaped inner cavity. Through slot.

Preferably, there is a frictional damping structure between the arc-shaped inner chamber of the first hinge body and the body of the arc-shaped second hinge body, so as to maintain the relative position between the two.

Preferably, the frictional damping structure is a plurality of protrusions arranged in sequence along the circumferential direction of the displacement track, and the plurality of protrusions are arranged on the inner wall of the arc-shaped inner cavity and/or the body of the second hinged body on the outside.

Preferably, a metal elastic member is arranged between the two hinged bodies, the fixed end of the metal elastic member is connected to one of the two, and the movable end of the metal elastic member is pressed against the other, so as to transmit signals.

In the electronic equipment provided by the present invention, the relative position state of the first body and the second body can be switched between the open state and the closed state through the setting of the connecting piece, wherein the first surface shell of the second body has a groove, And it is specifically configured as follows: the second surface shell of the first body in the closed state is in contact with the first surface shell of the second body, and the connecting piece is accommodated in the groove, so that the connecting piece is hidden in the electronic device , so that the connection is not perceived by the user at any angle. That is to say, the arrangement of the connecting piece will not form an exposed interface on the outer surface of the electronic device body. Compared with the prior art, the electronic equipment of the present invention can completely prevent dust and particles from falling into the body at the position of the connector, while having a smooth appearance; in addition, since the connector is built and hidden in the electronic device, it does not It will affect the settings of other functional peripheral ports, so it can further meet the design requirements of thinner and lighter.

In a preferred solution of the present invention, the connecting piece includes a hinged first hinge body and a second hinge body; wherein, the hinged side of the second body extends upwards to form a connecting portion, and the upper surface of the connecting end of the first hinge body is connected to the second hinge body. The hinged side of the first body is fixedly connected, and the upper surface of the connecting end of the second hinge body is fixedly connected to the connecting part of the second body, so that the hinge body is completely hidden in the first body and the second body of the electronic device, and is in a closed state The first body below is flush with the upper surface of the connecting part; wherein, the other end of the first hinge body is inserted into the other end of the second hinge body to form a sliding fit pair, and the relative sliding displacement trajectory of the two is in the same shape as The hinged rotation center is in the shape of a concentric arc, and the hinged rotation center is the rotation center of the first body and the second body during the state transition process; the sliding matching pair is specifically configured as follows: from the initial position to the end position of the displacement track, the The fit range of the sliding fit pair shows a decreasing trend, that is to say, at the initial closed position, the fit range of the sliding fit pair is the largest, and as the electronic device is opened, the fit range of the sliding fit pair shows a gradually decreasing trend Changes, so that it is reliably applicable to the conversion of the use state of electronic equipment. It has the characteristics of reliable structure and good operability.

In another preferred solution of the present invention, one end of the connecting member is hinged to the connecting end of the second body, and the groove extends from the connecting end to the middle of the first surface shell of the second body for accommodating The connector body is placed in a closed state; at the same time, the other end of the connector is hinged to the middle part of the second surface shell of the first body. This solution can also realize that the connector is completely hidden in the electronic device, completely avoiding dust and particles from falling into the body at the position of the connector, and has a smooth appearance effect at the same time.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the notebook computer described in the first embodiment;

Fig. 2 is an exploded schematic diagram of the assembly of the hinge described in the first embodiment;

Fig. 3 is a schematic diagram of the overall structure of the hinge shown in Fig. 2 in an initial position state;

Fig. 4 is A-A sectional view of Fig. 3;

Fig. 5 is a side view of the closed state of the notebook computer according to the first embodiment;

Fig. 6 is a side view of the notebook computer in a half-open state according to the first embodiment;

Fig. 7 is a fully opened side view of the notebook computer according to the first embodiment;

Fig. 8 is a schematic diagram of the overall structure of the hinge in the half-open state of the first embodiment;

Fig. 9 is a sectional view of BB of Fig. 8;

Fig. 10 is a schematic diagram of the overall structure of the fully opened state of the hinge according to the first embodiment;

Fig. 11 is a CC sectional view of Fig. 10;

Fig. 12 is a schematic diagram of the overall structure of the notebook computer described in the second embodiment;

Fig. 13 is a schematic diagram of the opening process state of the notebook computer described in the second embodiment;

Fig. 14 is a schematic diagram of the open state of the notebook computer described in the second embodiment;

Fig. 15 is a schematic view of the use state of the notebook computer according to the second embodiment.

In the picture:

Hinge 10, first hinge body 11, locking structure 111, arc-shaped inner cavity 112, first attached seat 113, through slot 114, second hinge body 12, protrusion 121, second attached seat 122, reinforcing rib 123 , the metal elastic member 13, the first body 20, the second surface shell 21, the first surface shell 22, the second body 30, the first surface shell 31, the groove 311, the connecting portion 32, and the cladding layer 40;

The connecting piece 10', the first body 20', the second surface case 21', the first surface case 22', the second body 30', the first surface case 31', and the groove 311'.

detailed description

Based on an electronic device that switches the relative position of two bodies between an open state and a closed state through a connecting piece, the core of the present invention is to ensure that the connecting piece is not perceived by the user at any angle through structural optimization design.

Without loss of generality, this embodiment will be described in detail with reference to the accompanying drawings taking the notebook computer as the main body.

Example 1:

Please refer to FIG. 1 , which is a schematic diagram of the overall structure of the notebook computer described in this embodiment. In order to clearly and briefly show the open state and the closed state of the notebook computer, the notebook computer in the open state is mainly shown in solid lines in the figure, and the notebook computer in the closed state is shown in dotted lines.

The same as the main body of a traditional notebook computer, the notebook computer realizes the hinge of the first body 20 and the second body 30 through a connecting piece; in this embodiment, the connecting piece is a hinge 10, so that the first body 20 and the second body The relative positional state of 30 is switched between an open state and a closed state. Wherein, the first surface shell 31 of the second body 30 has a groove 311, and is configured as: the second surface shell 21 of the first body 20 in the closed state and the first surface shell of the second body 30 31 are in contact with each other, and the first surface shell 22 of the first body 20 faces outward; and the hinge 10 in this state is accommodated in the groove 311 , so that the hinge 10 is hidden inside the electronic device. Such a setting makes the notebook design more inclined to ultra-thin and simple design requirements.

Specifically, as shown by the dotted line on the right side of FIG. 1, since the sides of the first body 20 and the second body 30 are not provided with any structurally exposed interface for setting the hinge 10, the hinge 10 is not at any angle. As perceived by the user, for an electronic device having six outer surfaces in a closed state, each surface has no exposed interface for the hinge 10 to be disposed on. In order to describe the specific structure and working principle of the hinge 10 in detail, please refer to Fig. 2, Fig. 3 and Fig. 4 together, wherein, Fig. 2 is an exploded schematic diagram of the assembly of the hinge described in this embodiment, and Fig. 3 is that the hinge is in the initial position A schematic diagram of the overall structure in the state, and FIG. 4 is a cross-sectional view along AA of FIG. 3 .

The hinge 10 is mainly composed of a hinged first hinge body 11 and a second hinge body 12; correspondingly, the structure of the electronic device body using the hinge also needs to be improved accordingly, as shown in Figure 3, which shows the closure Electronic device side view in state. The hinged side of the second body 30 extends upwards to form a connecting portion 32 for hinged with the hinged side of the first body 20; in this solution, the hinge 10 is built into the electronic device to ensure that the first body 20 in the closed state is connected to The upper surface of the connecting portion 32 is flush. Wherein, the upper surface of the connection end of the first hinge body 11 is fixedly connected with the hinged side of the first body 20; the upper surface of the connection end of the second hinge body 12 is fixedly connected with the connection portion of the second body 30; as shown in Fig. 3 and Fig. 4 As shown, the other end of the first hinge body 11 is inserted into the other end of the second hinge body 12 to form a sliding fit pair, and the relative sliding displacement track of the two is in the shape of an arc concentric with the hinge rotation center. That is, the center of rotation of the first body 20 and the second body 30 during the state transition process; and it is specifically configured such that: from the initial position of the displacement track to the end position, the cooperation range of the sliding mating pair shows a decreasing trend.

The use of orientation words such as "up" and "down" in this article is defined based on the use state of the hinge. It should be understood that the use of the above orientation words does not limit the scope of protection claimed in this application.

It should be noted that the initial position and end position of the relative sliding displacement trajectory of the first hinge body 11 and the second hinge body 12 are defined in the order of the opening operation, that is, the initial position (closed state) and end position ( fully open). Please refer to Fig. 5, Fig. 6 and Fig. 7 together for details, wherein Fig. 5 shows the side view of the notebook computer in the closed state. In the closed initial position, the cooperation range of the sliding mating pair is α; next, as The side view of the notebook computer in the half-open state shown in Figure 6, at this time, the cooperation range of the sliding fit pair is β; until it is fully opened, the side view of the notebook computer in the fully opened state shown in Figure 7, At this time, the fit range of the sliding fit pair is γ. In order to clearly show the changes of the sliding fit pair formed by the hinge 10 in each position state, the schematic diagrams are shown on the sides of Fig. 5, Fig. 6 and Fig. 7 respectively. Obviously, α > β > γ, as the notebook computer is gradually opened , the sliding fit pair formed by the two shows a gradually decreasing trend.

In addition, the relative positional relationship between the first hinge body 11 and the second hinge body 12 in the half-open state can be further referred to in Fig. 8 and Fig. 9, wherein Fig. 8 is a schematic diagram of the overall structure of the hinge in the half-open state, Fig. 9 is a sectional view of BB in Fig. 8; the relative positional relationship between the first hinge body 11 and the second hinge body 12 in the fully opened state can be further referred to Fig. 10 and Fig. 11, wherein Fig. 10 shows the fully opened state A schematic diagram of the overall structure of the lower hinge, and Fig. 11 is a sectional view along CC of Fig. 10 .

The arc-shaped sliding fit pair formed between the two hinge bodies of the hinge 10 is reliably applicable to the transition of the use state of the notebook computer. In particular, the relative rotation angle between the first body 20 and the second body is not limited to about 135 degrees shown in the figure. On the basis of the core design concept of the hinge described in this solution, according to the thickness of the body and the detailed The adjustment of other factors can realize about 180 degrees in the fully open state.

In addition, in order to prevent the second hinge body 12 from sliding out of the first hinge body 11 in a fully opened state, a locking structure 111 may be provided. Correspondingly, at the fully open position in the groove 311 of the second body 30, a limiting structure (not shown) that is compatible with the locking structure 111 should be provided, so that the second hinge body 12 will not follow the second hinge body. A body 20 is opened to slide out of the first surface case 31 . It has good working stability.

In this solution, the sliding fit pair is formed on the arc-shaped inner cavity 112 provided on the body of the first hinged body 11, and the body of the arc-shaped second hinged body 12 matching the arc-shaped inner cavity 112 between. It can also be such a design that the sliding fit pair is formed between the arc-shaped inner cavity provided on the body of the second hinged body and the body of the arc-shaped first hinged body that matches it (not shown in the figure) , as long as it satisfies the requirements for use, it is within the scope of protection claimed in this application.

On the basis of meeting the load-bearing strength requirements, the cross-sectional dimensions of the first hinged body 11 and the second hinged body 12 should be controlled to the greatest extent. Apparently, this design direction directly affects the connection strength between the two hinged bodies and the notebook computer body, and for this reason, the connecting ends of the two hinged bodies are respectively provided with attachment seats for connection. Specifically, the connection end of the first hinged body 11 is provided with a first attachment seat 113 for abutting against and fixing the connection surface of the hinge end of the first body 20; the connection end of the second hinge body 12 is provided with a second attachment seat 122, It is used for abutting and fixing with the connecting portion 32 of the second body 30; usually, the above-mentioned abutting and fixing relationship is realized by threaded fasteners, which are easy to assemble, maintain and disassemble. Of course, it can be realized by bonding process for special machine design.

In addition, as shown in FIG. 3 and FIG. 4 , the working end surfaces of the first accessory seat 113 and the second accessory seat 122 at the initial position are in the same horizontal plane, so as to control the assembly accuracy of the mating parts of the body. Further, as shown in Fig. 3 and Fig. 4, in the projection plane perpendicular to the hinge rotation center, the center of gravity of the second accessory seat 122 is located on the inner side of the arc-shaped displacement track, so that the connection part 32 and the second accessory seat 122 The fitting joint of the seat 122 is biased toward the inner side of the main body, so that the second auxiliary seat 122 with a certain width is closest to the hinged end of the first main body 20 to the maximum extent, thereby effectively controlling the overall size of the machine. At the same time, necessary peripheral ports can be placed on the rear side of the connecting portion 32 of the second body 30, which can further optimize the layout of the whole machine; and as shown in Figure 5, Figure 6 and Figure 7, the side of the notebook can be made The chamfering further tends to the ultra-thin design.

Of course, the center of gravity of the second accessory seat 122 is located on the inner side of the arc-shaped displacement track, which is equivalent to partially extending inwardly from the connecting end and hanging out. Reinforcing ribs 123 are provided between the second hinged body 12 below; thus, the first hinged body 121 at the corresponding position is provided with a through groove 114 communicating with the arc-shaped inner cavity 112 to form a reinforcement during the sliding fit process. The channel of rib 123 .

For hinges used in electronic devices such as notebook computers, it is often required that the hinge has a position maintaining function to ensure that the first body 20 can be maintained in any open position. In this solution, a frictional damping structure may be provided between the arc-shaped inner cavity 112 of the first hinge body 11 and the body of the arc-shaped second hinge body 12, so as to maintain the relative position between the two. As shown in the figure, the frictional damping structure is a plurality of protrusions 121 arranged in sequence along the circumferential direction of the displacement track, and the plurality of protrusions 121 are arranged on the outer surface of the body of the second hinged body 12; similarly, the protrusions can also be Reversely arranged on the inner wall of the arc-shaped inner chamber 112 of the first hinged body 11, or arranged on the outer surface of the body of the second hinged body 12 and the inner wall of the arc-shaped inner cavity 112 of the first hinged body 11 at the same time, both The relative position between the two can be maintained by effectively utilizing the principle of frictional damping.

In order to obtain better motion matching performance, a radial gap can be formed between the arc-shaped inner cavity 112 and the body of the second hinge body 12, and lubricating grease can be further injected into the gap. Since the first hinge body 11 is always covered outside the second hinge body 12 during the opening operation of the first hinge body 11 with the first body 20, the above-mentioned gap and frictional damping structure will not be exposed to the user's sight range .

The hinge described in this solution can further optimize the wired signal transmission between the first body 20 and the second body 30. Specifically, a metal elastic member 13 can be arranged between the two hinged bodies, as long as the fixed end of the metal elastic member 13 is in contact with the One of the two is connected, and its active end is pressed against the other, which can be used to transmit signals. As shown in the figure, the metal elastic member 13 is a metal shrapnel that saves assembly space. The fixed end of the metal shrapnel is connected to the second hinged body 12 and adapts to the curvature of its outer surface. After the assembly is completed, the movable end of the metal shrapnel The moderate deformation is pressed against the arc-shaped inner cavity 112 of the first hinge body 11 to ensure that its movable end is always in contact with the inner wall of the arc-shaped inner cavity 112 . With this arrangement, the wired signal transmission is integrated on the hinge without additional wiring, the process is simple, and the failure rate is low.

The notebook computer can also use wireless signal transmission, which will not be described in detail in this article.

Preferably, the outer surfaces of the first body 20 and the second body 30 are provided with a continuous cladding layer 40, on the basis of the smallest hinge gap between the two, to maximize dustproof and waterproof, so that the outer surfaces are integrally and seamlessly designed.

It should be understood that, in addition to the notebook computer described in this embodiment, the aforementioned hinge is also applicable to any electronic device with two modes, such as an open state and a closed state, such as netbooks and electronic dictionaries.

Example 2:

Please refer to FIG. 12 , which is a schematic diagram of the overall structure of the notebook computer described in the second embodiment.

This solution is the same as the first embodiment in that the connection between the first body 20' and the second body 30' is realized through the connecting piece 10'; similarly, the first surface shell 31' of the second body 30' has a groove 311', and configured so that: the second surface shell 21' of the first body 20' in the closed state is in contact with the first surface shell 31' of the second body 30', and the connector 10 in this state ' is accommodated in the groove 311', so that the connector 10' is hidden inside the electronic device.

Specifically, one end of the connector 10' is hinged to the connection end of the second body 30', and the groove 311' extends from the connection end to the middle of the first surface shell 31' of the second body 30'; the connector The other end of 10' is hinged to the middle of the second surface shell 21' of the first body 20'.

In the process of switching the notebook computer from the closed state to the open state, firstly, one side edge of the first body 20' can be pulled upwards, and one end of the connecting piece 10' rotates around the connecting end of the second body 30' to the position shown in Figure 13. In this state, the other side edge of the first body 20' is pulled upwards, and the middle part of the first body 20' rotates around the other end of the connecting piece 10' to the open state shown in FIG. 14 .

In addition, the computer described in this embodiment is a dual-use notebook computer. The first surface shell 22' of the first body 20' of this solution is provided with a touch screen, which can be used in the state of a tablet computer in the closed state; same.

The above is only 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 It should be regarded as the protection scope of the present invention.

Claims (14)

1. An electronic device, characterized in that, comprising: first body; a second body, the first surface shell of the second body has a groove; a connecting piece connected to the first body and the second body, so that the relative position state of the first body and the second body can be switched between an open state and a closed state; And it is configured that: the second surface shell of the first body in the closed state is in contact with the first surface shell of the second body, and the connecting piece is accommodated in the concave In the groove, so that the connecting part is hidden in the electronic device and the connecting part is not noticed by the user at any angle, the connecting part in the open state includes all the connecting parts in the first body An at least partially arc-shaped structure between the second surface shell and the first surface shell of the second body. 2. The electronic device according to claim 1, wherein the connecting member comprises a hinged first hinge body and a second hinge body; the hinged side of the second body extends upward to form a connecting portion for Hinged with the hinged side of the first body; the connecting piece is built into the electronic device, and the first body in the closed state is flush with the upper surface of the connecting part; wherein, The upper surface of the connecting end of the first hinge body is fixedly connected to the hinged side of the first body; the upper surface of the connecting end of the second hinge body is fixedly connected to the connecting portion of the second body; the first The other end of the hinge body is inserted into the other end of the second hinge body to form a sliding fit pair, and the relative sliding displacement track of the two is in the shape of an arc concentric with the hinge rotation center, and is configured as follows: from the initial position of the displacement track To the end position, the cooperation range of the sliding cooperation pair shows a decreasing trend. 3. The electronic device according to claim 2, wherein the sliding fit pair is formed on the arc-shaped inner cavity provided on the body of the first hinged body and the arc-shaped second hinged body adapted thereto between the ontology. 4. The electronic device according to claim 3, characterized in that, there is a frictional damping structure between the arc-shaped inner chamber of the first hinge body and the body of the arc-shaped second hinge body, so as to maintain the gap between the two. relative position between them. 5. The electronic device according to claim 3, wherein a metal elastic member is arranged between the two hinged bodies, the fixed end of the metal elastic member is connected to one of the two, and its movable One end is pressed against the other for signal transmission. 6. The electronic device according to any one of claims 1 to 5, characterized in that, the outer surfaces of the first body and the second body are provided with a continuous coating layer. 7. A hinge for an electronic device according to claim 1, comprising two relatively rotatable hinge bodies for connecting the first body and the second body of the electronic device; The connection end of the first hinge body is used for fixed connection with the first body; the connection end of the second hinge body is used for fixed connection with the second body; The other end of the first hinge body is inserted into the other end of the second hinge body to form a sliding fit pair, and the relative sliding displacement track of the two is in the shape of an arc concentric with the hinge rotation center, and is configured as follows: From the initial position of the displacement track to the end position, the cooperation range of the sliding cooperation pair shows a decreasing trend. 8. The hinge according to claim 7, characterized in that, the sliding fit pair is formed in the arc-shaped inner cavity provided on the body of the first hinge body and the arc-shaped second hinge body matched therewith. between ontology. 9. The hinge according to claim 8, characterized in that, the connecting ends of the first hinge body and the second hinge body have attached seats for connection, and the first attached seat and the first attached seat at the initial position The working end face of the second accessory seat is in the same horizontal plane. 10 . The hinge according to claim 9 , wherein, in a projection plane perpendicular to the hinge rotation center, the center of gravity of the second accessory seat is located inside the arc-shaped displacement track. 11 . 11. The hinge according to claim 10, characterized in that a reinforcing rib is provided between the second attached seat extending to the inner side of the connecting end and the second hinged body below it, and the first hinged body at the corresponding position A through groove communicating with the arc-shaped inner cavity is provided. 12. The hinge according to claim 8, characterized in that there is a frictional damping structure between the arc-shaped inner cavity of the first hinge body and the body of the arc-shaped second hinge body, so as to keep the gap between the two. relative position. 13. The hinge according to claim 12, characterized in that, the friction damping structure is a plurality of protrusions arranged in sequence along the circumferential direction of the displacement track, and the plurality of protrusions are arranged in the arc-shaped inner cavity on the inner wall and/or the outer surface of the body of the second hinged body. 14. The hinge according to claim 7, wherein a metal elastic member is arranged between the two hinged bodies, the fixed end of the metal elastic member is connected to one of the two, and the movable end of the metal elastic member is Press against the other to transmit the signal.