CN1309859A - Microphone connecting device for flip type portable telephone - Google Patents

Abstract

A device for electrically connecting a microphone mounted on a flit cover to an audio circuit of a telephone body. The flip cover is detachable from the telephone body when an excessive force is applied thereto. A hinge apparatus includes two hinge modules each including a hinge housing, a hinge shaft having a protrusion at an end and a shaft at another end, being assembled into the hinge housing; conductive means fixedly pressed into a through hole formed along an axis of the hinge shaft; a cam hinge having opposing protrusions and opposing indents formed alternately at one side, engaging with the hinge shaft, and a through hole formed along the axis of the hinge shaft; a hinge cover mounted so as to cover an end of the hinge housing, the hinge cover having a through hole formed along the axis of the hinge shaft; and a coil spring intervening between the cam hinge and the hinge cover to provide an elastic force. The flip cover includes a first connection terminal having a plane surface, a curved surface and a tension part, wherein the tension part maintains electrical contact with the conductive means; and a microphone mounted on the flip cover.

Description

Microphone connection for clamshell mobile phones

Background of the Invention

1. field of invention

The invention relates to a flip-type portable mobile phone, in particular to a device for electrically connecting a microphone mounted on the flip cover to an audio circuit on the main body of the mobile phone.

2. Description of the technology

Cell phones are generally divided into slat cell phones and clamshell cell phones. What clamshell phones have over slat phones is that the sound quality is excellent. The reason for the excellent sound quality is that the microphone on the flip is very close to the user's mouth. This improvement is particularly noticeable as phones get smaller and the microphones on slatted phones are moved more away from the person's voice. The flip cover also protects the keys and prevents unintentional pressing of the keys.

A clamshell phone typically includes a phone body, a flip cover, and a hinge mechanism that mechanically connects the flip cover to the phone body. When the flip is closed, the flip-type mobile phone is in a standby state for talking, and when the flip is opened, the phone is in a talking state. The microphone of the clamshell mobile phone is arranged on the lower part of the main body of the mobile phone or on the clamshell.

The miniaturization of mobile phones is limited by the need to keep the distance between the microphone and the earpiece at about the average distance between a human ear and mouth. That is, the average distance between the mouthpiece where the microphone is to be installed on the mobile phone and the ear piece where the microphone is installed should be about 14cm. When the length of the main body of the mobile phone is reduced, the distance can be increased by installing the microphone on the flip cover.

US Patent No. 4,897,873 to Beutler et al. proposes a foldable mobile phone having a flip element on which a ring element or a microphone is attached by means of a universal hinge. The mobile phone flip cover proposed by Beutler et al. is fixedly connected to the mobile phone, and the flip cover cannot be separated from the main body of the mobile phone. If excessive force is applied to the flip, it may damage the flip and render the phone unusable because the microphone mounted on the flip is disconnected from the body of the phone.

Summary of Invention

The clamshell mobile phone has a clamshell and a cell phone main body, including a hinge device, which includes: a device for connecting the clamshell to the cell phone body so that the clamshell is easy to open and close relative to the cell phone body; a hinge bracket; a hinge shaft, Its one end has a protrusion, and its other end has a shaft, which is installed in the above-mentioned hinge bracket; the conductive device is arranged in a through hole formed along the axis of the above-mentioned hinge shaft; a through hole formed along the axis of the shaft; a hinge cover covering one end of the hinge bracket, the hinge cover having a through hole formed along the axis of the hinge shaft through which electric wires pass; and interposed between the cam type hinge and the hinge cover A coil spring for biasing the cam type hinge; wherein the flip cover includes: a connection terminal having first and second end portions, the second end portion having resilient means for maintaining contact with the hinge means during opening and closing of the flip cover The conductive contact of the conductive device; and the microphone mounted on the flip cover, electrically connected to the connecting terminal and the audio circuit in the main body of the mobile phone.

The conductive device preferably includes a cylinder, a conductive rod installed in the cylinder and movable along the length direction, and an elastic body installed in the cylinder for biasing the conductive rod, wherein one end of the conductive rod protrudes from the hinge shaft outside.

In addition, the conductive rod preferably includes a small-diameter portion projecting from the cylinder at one end and a large-diameter portion fitted in the cylinder.

A microphone connection device for a flip-type portable mobile phone according to a second aspect of the present invention includes a mobile phone main body. A flip cover and a hinged device connecting the flip cover to the main body of the mobile phone, including a microphone mounted on the flip cover, a first connecting terminal mounted on the corresponding steering knuckle of the flip cover, the terminal is electrically connected to the microphone, and a second connection terminal arranged on both sides of the mobile phone main body Two connecting terminals, which are connected to the audio circuit in the main body of the mobile phone, wherein the sliding surface of the first connecting terminal is in contact with the corresponding contact surface of the second connecting terminal when the flip is opened from the main body of the mobile phone, and when the flip is closed on the main body of the mobile phone When the slide surface is out of contact with the contact surface, when the flip cover is opened, the microphone can be electrically connected to the audio circuit through the first connection terminal.

Preferably, each first connection terminal includes a flat surface, a curved surface, a sliding surface and a hooking surface. Preferably, the steering knuckle has an opening formed along its peripheral surface into which the sliding surface of the first connection terminal can be inserted to fix the first connection terminal to the knuckle.

A flip-type mobile phone according to another aspect of the present invention comprises a flip connected to the cell phone body, including a microphone on the flip, an audio circuit in the cell phone body, and a first matching device in the flip for matching the second matching device in the cell phone body, wherein The first and second matching devices respectively include conductive parts, which form an electrical connection between the microphone and the audio circuit at least when the flip cover is opened relative to the mobile phone body, and at least one of the conductive parts has elasticity characteristic.

A brief description of the drawings

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, from which the above-mentioned purpose and advantages of the present invention can be clearly seen.

Fig. 1 is the perspective view of the clamshell mobile phone of the first embodiment of the present invention;

Fig. 2 is an exploded view showing the elements of the hinged microassembly of the first embodiment of the present invention;

Fig. 3 is a cross-sectional view showing the state of the hinged micro-assembly of the first embodiment of the present invention after the assembly is completed;

4 is a cross-sectional view of the spring connecting pin of the first embodiment of the present invention;

Fig. 5 is a perspective view showing how a connection terminal is mounted on a neck portion of a flip cover according to a first embodiment of the present invention;

Fig. 6 is a plan view showing a state in which a microphone is mounted on a flip cover according to a first embodiment of the present invention;

7A and 7B are cross-sectional views taken along X1-X1 and Y1-Y1 of FIG. 6, respectively;

Fig. 8 is a partial perspective view showing how to assemble the flip according to the first embodiment of the present invention;

Fig. 9 is a plan view showing the state after completing the assembly of the micromodule according to the first embodiment of the present invention;

Fig. 10 is a cross-sectional view of the mobile phone taken along line Z1-Z1 of Fig. 9;

Fig. 11 is a partial perspective view showing how the connecting terminal is mounted on the flip cover according to the second embodiment of the present invention;

12 is a plan view showing a state in which a connection terminal and a microphone are mounted on a flip cover according to a second embodiment of the present invention;

Fig. 13 is a cross-sectional view of the flip cover taken along line X2-X2 of Fig. 12;

14 is a plan view showing a state in which a connecting terminal is assembled on a mobile phone body according to a second embodiment of the present invention;

Fig. 15 is a cross-sectional view taken along the Y2-Y2 line of Fig. 14;

Fig. 16 is a perspective view showing how the flip cover is mounted on the mobile phone body according to the second embodiment of the present invention;

Fig. 17A is a cross-sectional view showing the microphone connection device when the flip cover is closed on the mobile phone body according to the second embodiment of the present invention;

Fig. 17B is a cross-sectional view showing the microphone connection device according to the second embodiment of the present invention when the flip is opened from the cell phone body.

Detailed Description of the Preferred Embodiment

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The same numbers in the drawings denote the same components, and descriptions of known devices, techniques, and characteristics are omitted if it is deemed to obscure the subject matter of the present invention.

Fig. 1 is a perspective view of a clamshell mobile phone according to an embodiment of the present invention. Referring to FIG. 1 , a mobile phone 300 has a flip cover 200 . When the flip cover 200 is opened, the mobile phone 300 is in an off-hook state, and the user can make calls on the mobile phone. If the flip cover 200 is closed, the mobile phone 300 is in an on-hook state.

As shown in the figure, the clamshell mobile phone 300 of the present invention comprises a mobile phone main body 100, a flip cover releasably connected to the mobile phone main body 100 and a hinged device (not shown) for keeping the flip cover 200 at an opening angle installed in the mounting portion 105. out). In this case, the hinge mechanism mechanically connects the flip cover 200 to the phone body 200 . The hinge mechanism also enables the microphone 80 mounted on the flip cover 200 to be electrically connected to the printed circuit board in the main body 100 of the mobile phone.

The mobile phone 300 includes: an antenna device 101 mounted on its upper part; an ear piece 102 with a microphone; a display device such as a liquid crystal display unit 103 positioned at the bottom of the ear piece 102; a keyboard 104 with many buttons or keys, which are function keys or The dial key is located at the lower part of the liquid crystal display unit 103 . Microphone 80 is mounted on flip 200, preferably on its outer portion.

The flip cover 200 has a label cover or plate cover, which is usually fixed to the housing by laser melting. Considering the average distance between the human ear and the mouth (for example, 14 cm), the microphone 80 is preferably mounted on the outer portion of the flip cover 200 . In this exemplary embodiment, the microphone 80 is connected to the audio circuitry in the handset body 100 using contact members in the mounting portion 105 . The contact member for electrically connecting the microphone 80 to the audio circuit of the mobile phone main body 100 will be described in detail below.

Fig. 2 is an exploded view showing the components of a microphone connecting device according to a first embodiment of the present invention, which functions as a hinge device. FIG. 3 is a cross-sectional view of the hinged microassembly of FIG. 2 .

First, as shown in FIGS. 8 and 9 , the hinged device of the present invention includes two hinged micro-assemblies M1 and M2 , which are installed in the mounting portion 105 at the bottom of the mobile phone main body 100 . As shown in Fig. 2, two hinged microassemblies M1 and M2 have the same structure.

Referring to FIG. 2 , the hinged micro-assembly M1 includes: a hinged bracket 1; a hinged shaft 2 inserted into the hinged bracket 1 along the axis A1; a spring connecting pin 3 inserted into a through hole formed along the central axis A1 of the hinged shaft 2; A cam hinge 4 fitted to the hinge shaft 2; a hinge cover 5 for covering one end of the hinge bracket; a coil spring inserted between the cam hinge 4 and the hinge cover 5.

The hinged bracket 1 has a flat upper surface 11 and a rounded lower surface 12 for ease of manufacture. Slender guide grooves 13 are formed on the upper surface 11 along the length direction (ie, along the axis A1 direction), and hook grooves 14 are formed on both sides of the hinged bracket 1 . The hinge shaft 2 is inserted into the hinge bracket 1 and has a protrusion 21 and a shaft 22 at both ends thereof, respectively. The end portion 22a of the shaft 22 has a pair of opposing flat surfaces 22b and a pair of opposing alternately formed circular surfaces 22c. That is, the end portion 22a of the shaft 22 preferably has two opposing flat surfaces 22b and two opposing round surfaces 22c. The shape of the end portion 22 a of the shaft 22 corresponds to the shape of the hook portion of the flip cover 200 .

If the flip cover 200 is assembled on the end portion 22a of the shaft 22, the hinge shaft 2 rotates together with the flip cover 200 when the flip cover 200 is opened and closed. A through hole is formed along the axis of the hinge shaft 2 , and the spring connection pin 3 is pressed into the through hole so that one end and the other end of the spring connection pin 3 protrude from the hinge shaft 2 . That is, the small-diameter portion 32a of the spring connecting pin 3 protrudes from one end of the hinge shaft 2 , while the cylinder 31 of the spring connecting pin 3 protrudes from the other end of the hinge shaft 2 . The wire 34 is led out from the end of the cylinder 31, and is preferably connected to the audio circuit in the main body 100 of the mobile phone. The structure of the spring connecting pin 3 is also shown in FIG. 4 .

2 and 3, the cam hinge 4 engaging the hinge shaft 2 is inserted into the hinge bracket 1, and has an upward guiding protrusion 41, which can be guided by the groove 13, so that the cam hinge 4 can move freely Move forward and backward. Protrusions 42 and grooves 42 are alternately formed on one end of the cam hinge 4 . That is, the cam hinge 4 has a pair of opposing protrusions 42 and a pair of opposing grooves 42 alternately formed on the end.

A through hole 44 is formed in the cam type hinge 4 along the central axis A1 of the hinge shaft 2 . That is, the through hole 44 is coaxial with the spring connecting pin 3 . Here, the diameter of the through hole 44 should be slightly larger than that of the spring connecting pin 3 , so that the hinge shaft 2 can rotate together with the flip cover 200 without being interfered by the cam hinge 4 .

In addition, the hinge cover 5 is mounted on the outermost end of the hinge bracket 1 , and the coil spring 6 is interposed between the cam hinge 4 and the hinge cover 5 . One end of the coil spring 6 is supported by the cam hinge 4 and the other end thereof is supported by the hinge cover 5 . In this way, the coil spring 6 acts an elastic force on the cam hinge 4 . The hinged cover 5 has a protrusion 51 and two opposite hooks 52 , the former being guided by the elongated guide slot 13 , and the latter being inserted into the hook slot 14 . The diameter of the through hole 53 is larger than the diameter of the electric wire 34, and the through hole is formed coaxially with the through hole 44, so that the hinge shaft 2 can rotate together with the flip cover 200, the spring connecting pin 3 and the electric wire 34 without being affected by the through hole 53.

Fig. 4 is a cross-sectional view showing the structure of the spring connecting pin 3 of the first embodiment of the present invention. Referring to Fig. 4, the spring connecting pin 3 inserted into the hinge shaft 2 in a friction fit includes: a cylinder 31; a conductive rod 32, which is arranged in the cylinder 31 and can move along the length direction of the cylinder 31; Inside the cylinder 31, the conductive rod 32 is elastically supported. The conductive rod 32 has a small diameter portion 32a and a large diameter portion 32b. The end of the small-diameter portion 32 a is rounded, while the end of the large-diameter portion 32 b is connected to an electric wire 34 . One end of the cylinder 31 has a through hole 31a, and the other end has a through hole 31b, the diameter of the through hole 31a is slightly larger than the diameter of the small diameter portion 32a, so that the small diameter portion 32a can protrude from the cylinder 31, and The diameter of the through hole 31 b is larger than that of the electric wire 34 . The conductive rod 32 is biased to the left by the elastic force of the coil spring 33 .

5 is a perspective view showing the assembly of the first connection terminal 7 and the knuckle 210 of the flip cover 200 according to the first embodiment of the present invention. FIG. 6 is a plan view showing a state in which the first connection terminal is mounted on the flip cover 200 in the first embodiment of the present invention. 7A is a cross-sectional view taken along line XI-XI of FIG. 6 , and FIG. 7B is a cross-sectional view taken along line Y1-Y1 of FIG. 6 .

Referring to FIG. 5 , the flip cover 200 has a knuckle 210 formed on the end of the neck portion 201 . A hook portion 220 is formed on the knuckle 210 , and a fold groove 211 is formed on an outer periphery of the knuckle 210 . A groove 212 passing through the first connection terminal 7 is formed in the neck portion 201 . The first connection terminal 7 is disposed between the wire drawn from the microphone 80 and the spring connection pin 3 pressed into the hinge shaft 2 . The first connecting terminal 7 is installed in the connecting portion of the steering knuckle 210 in the direction of the arrow. One end of the first connection terminal 7 housed in the steering knuckle 210 is connected to the wire drawn from the microphone 80 , and the other end thereof contacts the small diameter portion 32 a of the spring connection pin 3 . The first connection terminal 7 includes a flat surface 71 formed at a first portion, a curved surface 72 formed at a middle portion, and an elastic portion 73 formed at a second portion. The first connection terminal 7 is formed by bending a leaf spring. The flat surface has a hole 71a formed in a first portion thereof, and is fixed to the flat surface of the flip cover 200, and an electric wire can be fixed to the hole 71a. The curved surface 72 has elasticity. Curved surface 72 is preferably inserted between hook portion 220 and knuckle 210 and held in place by a biasing spring force. Also the elastic portion 73 has two sides bent to face each other, and one of the two sides has a through hole into which the end of the small diameter portion 32a can be inserted. The elastic part 73 is installed in the hook part 220 .

Referring to Figures 6, 7A and 7B, the microphone 80 is preferably mounted on the outer portion of the flip cover 200 so as to reach the average distance between a person's mouth and ears. The microphone 80 is connected to the flat surface 71 of the first connection terminal 7 via an electric wire 81 drawn therefrom. The wires 81 may be secured to the flip cover 200 by known methods including strips of adhesive or embedding them within the flip cover 200 .

FIG. 8 is a perspective view showing the assembly of the flip cover 200 and the mobile phone body 100 according to the first embodiment of the present invention. FIG. 9 is a plan view showing the assembled state of the hinge micro-assembly M1 on the mobile phone main body 100 according to the first embodiment of the present invention. FIG. 10 is a cross-sectional view taken along line Z1-Z1 of FIG. 9 .

Referring to FIG. 8 , when the hinged micro-components M1 and M2 are installed in the mounting portion 105, the end portion 22a of the hinged shaft 2 and the small diameter portion 32a of the spring connecting pin 3 protrude from the mounting plate formed at the lower end of the mobile phone main body 100 respectively. Section 105. In addition, the first connection terminal 7 is visually arranged on the knuckle 210 of the flip cover 200 . It is easy to detach the flip cover 200 from the phone body 100, especially when excessive force is applied to the flip cover. Therefore, even if force is used to remove the flip cover 200 from the mobile phone body 100, the excessive force is not transmitted to the neck portion 201, and thus the flip cover 200 is not damaged. To install the flip cover 200 on the mobile phone body 100 , the user can press the small-diameter portion 32 a with force, and then insert the small-diameter portion 32 a into the hook portion 220 .

The mechanism related to the opening/closing operation of the flip cover 200 can be easily understood with reference to FIGS. 9 and 10 . When the user opens the flip cover 200 to play a mobile phone, the end 22a of the hinge shaft 2 rotates the corner of the flip cover 200 along with the flip cover 200 . As the hinge shaft 2 turns, the cam hinge 4 moves backward due to sliding contact with the protrusion of the hinge shaft 2, and then when the protrusion 21 reaches the top of the protrusion 42, the cam joint 4 is smooth again. move forward. The flip cover 200 stops rotating at one position, at this position, the protruding part 21 of the hinge shaft 2 is re-engaged in the groove 43 of the cam type hinge part 4, thereby maintaining the open angle when the mobile phone is used.

One elastic portion 73 of the first connection terminal 7 is kept in surface contact with the small diameter portion 32 a of the spring connection pin 3 . The end of the small-diameter portion 32a is a curved surface, which has good contact characteristics. In addition, since the elastic member 73 has elasticity, and the small-diameter portion 32a is also biased by the elastic force of the two coil springs 6 and 33, electrical contact can be maintained. When the flip cover 200 rotates, the hinge shaft 2 rotates together with the spring connecting pin 3, so the contact between the small diameter portion 32a and the elastic member 73 is still maintained.

Therefore, by connecting the wire 81 of the microphone 80 to the flat surface 71 of the first connecting terminal 7, an electrical connection can be formed between the microphone 80 and the mobile phone main body 100, and the flat surface 71 passes through the elastic member 73 of the connecting terminal 7 and conducts electricity. The small-diameter portion 32 a of the rod 32 is connected to the conductive rod 32 . The conductive rod 32 is connected to the audio circuit of the mobile phone main body 100 via the wire 34 . In addition, the flip cover 200 can be detached from the main body 100 of the mobile phone. If the flip cover is disengaged from the mobile phone body 100 due to, for example, an external impact force, the user can reattach the flip cover 200 to the cell phone body 100 in a simple manner.

The microphone 80 and the flat surface 71 of the first connection terminal 7 exposed on the inner surface of the flip cover 200 may be covered with a plastic plate or a slide cover.

FIG. 11 is a perspective view showing a second embodiment of the present invention in which the second connection terminal 90 is incorporated in the knuckle 210 of the flip cover 200 . 12 is a plan view showing a state in which the second connection terminal 90 is attached to the flip cover 200 according to the second embodiment of the present invention. Fig. 13 is a sectional view taken along line X2-X2 of Fig. 12 .

As shown in FIGS. 11 to 13 , the microphone connection device fixed on the flip cover 200 according to the second embodiment of the present invention has a second connection terminal 90 mounted on the flip cover 200 and a third connection terminal 95 mounted on the mobile phone main body 100 . When the flip cover 200 is opened, the two connection terminals 90 and 95 contact each other. Likewise, the microphone 80 is mounted on the flip cover 200 . The wire 81 of the microphone is electrically connected to the second connection terminal 90 . Meanwhile, a third connection terminal 95 (see FIGS. 14 and 15 ) connected to a printed circuit board (not shown) is provided at a position corresponding to the second connection terminal 90 of the mobile phone body 100 . When the flip is opened, the second and third connection terminals 90 and 95 contact each other.

As shown in Figures 11-13, the flip cover 200 has a neck portion 201 extending therefrom from which the knuckle 210 extends. The flip cover 200 can be detached from the main body 100 of the mobile phone. In addition, the knuckle 210 has a hook portion 220 formed therein. The second connection terminal 90 is arranged between the steering knuckle 210 and the hook portion 210 in the direction of the arrow, and the guide groove 214 is formed at a specific portion of the outer circumference of the steering knuckle 210 and has an opening 215, and a part of the second connection terminal 90 protrudes from the opening. 215. The hook portion 220 has a detachment groove 221 and a groove 212 formed near the neck portion 201 into which the second connection terminal 90 is inserted.

According to the second embodiment of the present invention, the second connection terminal 90 has a flat surface 91 , a curved surface 92 , and a sliding surface 93 . The flat surface 91 is electrically connected to the microphone 80 via the electric wire 81, and the curved surface 92 is tightly embedded between the steering knuckle 210 and the hook portion 220, and the sliding surface 93 is embedded in the opening 215 formed on the outer periphery of the steering knuckle 210, and extend through the opening. The end portion 94 of the second connection terminal 90 is shaped such that the sliding surface 93 sinks into the opening 215 . The second connection terminal 90 having elastic force on the curved surface 92 comes into tight contact with the knuckle 210 and the hook portion 220 . A guide groove 214 is formed on the outer peripheral surface of the knuckle 210 for guiding the movement of the third connection terminal 95 when the flip cover 200 is opened.

14 is a plan view showing a state in which the third connection terminal 95 is installed in the mobile phone main body 100 according to the second embodiment of the present invention, and FIG. 15 is a cross-sectional view taken along line Y2-Y2 of FIG. 14 . As shown in Figures 14 and 15, the first and second hinged micro-components M1 and M2 are installed on both sides of the installation part 105, which is located at the bottom of the mobile phone main body 100, and the third connection terminal 95 is connected by a curved rod-shaped conductive Made of elastic material. The third connection terminal 95 has a flat surface 96 , a contact surface 97 and a hook surface 98 . The flat surface 96 of the third connecting terminal 95 is fixed on the main printed circuit board 130 of the mobile phone body 100, thereby connecting the flip cover 200 to the mobile phone body 100 and connecting the microphone 80 to the audio circuit. The contact surface 97 whose protrusion protrudes into the rotating surface 100 of the mobile phone body 100 contacts the second connection terminal 90 when the flip cover 200 is opened. The hook surface 98 constrains the movement of the contact surface 97, preventing the contact surface 97 from protruding excessively. The third connection terminal 95 also has elastic force.

FIG. 16 is a perspective view showing how the flip cover 200 is assembled on the mobile phone main body 100 according to the second embodiment of the present invention. 17A is a cross-sectional view showing the microphone connection device when the flip cover 200 is closed, and FIG. 17B is a cross-sectional view showing the microphone connection device when the flip cover 200 is opened from the mobile phone body 100.

16, 17A and 17B, the end portion 22a of the hinge shaft 2 is forcibly inserted into the flip cover 200. Referring to FIGS. As shown in FIG. 17A, when the flip cover 200 is in the closed standby position with an opening angle of about 0°, the sliding surface 93 of the second connection terminal 90 is separated from the contact surface 97 of the third connection terminal 95. However, as shown in Figure 17B, when the flip cover 200 rotates to the open talking position, that is, to an opening angle of about 135°, the sliding surface 93 moves along the rotating surface 110 to form surface contact with it, and at the same time, the contact surface 97 moves along the guide groove 214. Move to make surface contact with it. Then the second connection terminal 90 is in contact with the third connection terminal 95 , thereby connecting the microphone 80 to the printed circuit board in the main body 100 of the mobile phone. Due to the spring force, the second and third connection terminals 90 and 95 will remain in constant contact.

Therefore, when the flip cover 200 is opened, the microphone is connected to the second connection terminal 90 via the wire 81 . The sliding surface 93 of the second connection terminal is in contact with the contact surface of the third connection terminal 95 . The contact surface 97 is in turn connected via the flat surface 96 to the audio circuit of the printed circuit board. Since both the sliding surface 93 and the contact surface 97 have elasticity, the contact therebetween is maintained. In addition, this contact is maintained even when subjected to external shocks.

If the flip is closed, the sliding surface 93 is separated from the contact surface 97 , so that the microphone 80 is disconnected from the audio circuit of the mobile phone body 100 .

Advantageously, when the flip 200 is subjected to a strong impact or force, the flip 200 will disengage. However, the user can then easily reattach the flip cover to the phone body 100 .

While the invention has been shown and described with reference to certain embodiments thereof, it will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

Claims (13)

1. A clamshell mobile phone has a flip cover and a mobile phone body, the mobile phone comprising: Articulation The articulation consists of: a device for connecting the flip cover to the main body of the mobile phone, so as to facilitate opening and closing the flip cover relative to the main body of the mobile phone; hinged bracket; an articulated shaft, having a protrusion at one end and a shaft at the other end, housed within said articulated bracket; The conductive device is arranged in the through hole formed along the axis of the above-mentioned hinge shaft; a cam type hinge engaging with the hinge shaft, and a through hole formed along the axis of the hinge shaft; a hinge cover covering one end of the hinge bracket, the hinge cover having a through hole formed along the axis of the hinge shaft through which the electric wire passes; and a coil spring interposed between said cam hinge and said hinge cover for biasing said cam hinge; The above clamshell includes: a connecting terminal having first and second end portions, said second end portion having resilient means for maintaining conductive contact with said conductive means of said hinge means during opening and closing of said flip cover; The microphone mounted on the flip cover is electrically connected to the connection terminal and the audio circuit in the main body of the mobile phone. 2. The clamshell mobile phone according to claim 1, wherein the above-mentioned conductive device comprises: cylinder; a conductive rod housed in the cylinder, the rod being movable along its length; The elastic member installed in the cylinder is used for biasing the above-mentioned conductive rod, wherein one end of the above-mentioned conductive rod protrudes out of the above-mentioned hinge shaft. 3. The microphone connection device according to claim 2, wherein the elastic member is a coil spring. 4. The clamshell mobile phone according to claim 2, wherein the above-mentioned conductive rod comprises: a small diameter portion, one end of which protrudes beyond the cylinder; The large diameter part is installed in the cylinder. 5. The flip-type mobile phone as claimed in claim 1, wherein said elastic means comprises elastic opposite surfaces curved along the transverse direction. 6. The flip phone of claim 1, wherein said cam hinges include opposing protrusions and opposing recesses that help position said flip relative to said phone body. Move to a fixed position. 7. The flip-type mobile phone according to claim 1, wherein the diameter of the cylinder is smaller than the diameter of the through hole formed on the cam hinge. 8. A microphone connection device for a flip-type small mobile phone, which has a mobile phone body, a flip cover, and a hinge device for connecting the flip cover to the phone body, including: Microphone mounted on the flap; The first connection terminal is installed on the corresponding steering knuckle of the above-mentioned flip cover, and the above-mentioned terminal is electrically connected to the microphone; The second connecting terminal is arranged on both sides of the main body of the mobile phone, and is electrically connected to the audio circuit in the main body of the mobile phone, wherein, when the flip cover is opened from the main body of the mobile phone, the sliding surface of the first connecting terminal and the corresponding surface of the second connecting terminal The contact surfaces are in contact, and when the flip cover is closed on the mobile phone body, the sliding surface is out of contact with the contact surface, so when the flip cover is opened, the microphone is electrically connected to the audio circuit through the first connection terminal. 9. The microphone connection device according to claim 8, wherein each of said first connection terminals comprises a flat surface, a curved surface, a sliding surface and a hook surface. 10. The microphone connecting device according to claim 8, wherein the steering knuckle has an opening formed around its circumference, and the sliding surface of the first connecting terminal is inserted into the opening, thereby fixing the first connecting terminal to the steering knuckle. superior. 11. The microphone connection device according to claim 8, wherein each of the second connection terminals includes a flat surface, a contact surface and a hook surface; and the contact surface protrudes from a rotating surface of the mobile phone body. 12. The microphone connection device according to claim 8, wherein the steering knuckle has a guide groove formed on its peripheral surface for guiding the second connection terminal. 13. A clamshell mobile phone has a clamshell connected to a mobile phone body, comprising: a microphone in the said flap; an audio circuit within the body of the mobile phone; The first matching device on the above-mentioned flip cover is used to match the second matching device in the above-mentioned mobile phone main body, wherein the above-mentioned first and second matching devices respectively include conductive components, and the conductive components are at least when the above-mentioned flip cover is opened relative to the above-mentioned mobile phone main body An electrical connection is formed between the microphone and the audio circuit; at least one of the conductive components is elastic.

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