KR200192881Y1 - Microphone connection mechanism for flip phones - Google Patents

Abstract

The present invention relates to a microphone connection mechanism of a flip-type mobile phone, the hinge housing around the axis of rotation of the flip cover, a hinge shaft assembled to the hinge housing, a hinge cam engaged with the hinge shaft, and supporting the hinge cam In a flip-type mobile phone having a hinge device configured to be mounted to each of the housing of the upper casing hinge module consisting of a compression coil spring, and a hinge cover locked to the outermost of the hinge housing to open and close the flip cover, the microphone rophone And a flexible printed circuit drawn out from the microphone rophone, wherein the flexible printed circuit has both ends, and is connected to the hinge device and detachably attached to the hinge device, a knuckle positioned at the end of the neck and an interior of the knuckle. A flip cover having a catch formed on the flip cover; A conductive connector assembled to the engaging portion and connected to both ends of the flexible printed circuit; And a microphone connected to the audio circuit of the main body by being composed of conductive means press-fitted to the hinge shaft in a rotational axis direction to be in constant contact with the conductive connecting body, to maintain an elastic support, and to be connected to the printed circuit board of the main body. do.

Description

Microphone connection mechanism for flip phones

The present invention relates to a flip type radiotelephone, and more particularly, to a mechanism for electrically connecting a microphone installed on a flip cover to a main body.

Typically, the portable terminal refers to a portable device such as HHP, CT-2, PCS, and the like. At this time, such a portable device performs a communication function while performing wireless communication with the base station.

At present, such portable terminals are being developed in accordance with the trend of miniaturization and light weight of electronic components, and a bar type and a flip type coexist.

In such bar type and flip type, flip type mobile phones having excellent sound sensitivity are becoming more common. The reason why the flip-type mobile phone is generalized is that the flip cover installed in the main body protects a plurality of buttons to prevent malfunction of the buttons, and collects the sounds by performing the role of a negative reflector during a call. Moreover, flip-type mobile phones will become more popular because they are advantageous for miniaturization.

The conventional flip-type mobile phone is composed of a flip cover, a main body and a hinge device for mechanically connecting the flip cover and the main body, and are designed to automatically transition to a call mode or a call standby mode according to whether the flip cover is opened or closed.

At this time, the conventional microphone may be located at the bottom of the main body, it may also be located in the flip cover.

Currently, mobile phones are becoming smaller, but mobile phones are limited in size to secure the distance between the user's ear and the mouth. That is, in the case of a portable terminal, the distance between the talker (the part where the microphone device is installed) and the receiver (the earpiece part including the speaker) should be 14 cm or more. Therefore, the trend is trying to solve the call distance by installing a microphone on the flip cover.

A contact microphone device of a flip-type mobile phone, filed by the present applicant (April 26, 1997), is disclosed in detail in patent application No. 97-15757 (Samsung Electronics).

However, the prior art contact type microphone apparatus has the following problems. Since the process of assembling the connecting terminal between the neck and the engaging portion of the flip cover has been a cumbersome cause of the decrease in productivity. In addition, the process of connecting the wire of the microphone rophone installed in the flip cover to the connection terminal also occurred as a factor of the decrease in productivity.

That is, when the microphone installed on the flip cover is electrically connected to the printed circuit board of the main body, the first connecting terminal should be carefully assembled and fixed between the knuckle and the engaging portion of the flip cover, and then the wire of the microphone is connected to the connecting terminal. Had to be connected to All of this was done by hand. In particular, because of the characteristics of the product to be strongly resistant to impact or drop, the mechanism for electrically connecting the microphone to the main body should be the first priority. This is a structurally very important problem in the nature of mobile phones.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention from the perspective of the assembler, the microphone connection of the flip-type mobile phone for easily connecting the microphone installed on the flip cover in the flip-type mobile phone to the main body Provide a mechanism.

Another object of the present invention is to provide a microphone connection mechanism for improving productivity.

Another object of the present invention is to provide a microphone connection mechanism that can be structurally resistant to impact or drop.

In order to achieve the above objects, the present invention provides a hinge housing, a hinge shaft assembled to the hinge housing, a hinge cam engaged with the hinge shaft, and a compression coil for supporting the hinge cam. In the flip-type mobile phone having a hinge device consisting of a hinge module consisting of a spring and a hinge cover which is locked to the outermost of the hinge housing, respectively mounted to the housing of the upper casing to open and close the flip cover,

A microphone and a flexible printed circuit drawn out of the microphone, the flexible printed circuit having both ends, the neck being coupled to the hinge device and detachable at the same time, the knuckle positioned at the end of the neck and the knuckle inside the neck; A flip cover having a formed locking portion;

A conductive connector assembled to the engaging portion and connected to both ends of the flexible printed circuit; And

The microphone is electrically connected to the audio circuit of the main body by being composed of conductive means connected to the printed circuit board of the main body by being pressed into the hinge shaft in a rotational axis direction to be in constant contact with the conductive connector and to maintain an elastic support. do.

1 is a perspective view showing a flip-type mobile phone according to an embodiment of the present invention

Figure 2 is a perspective view showing the assembled hinge module according to an embodiment of the present invention

Figure 3 is an exploded perspective view showing the configuration of the hinge module according to an embodiment of the present invention

4 is a cross-sectional view showing the configuration of the assembled hinge module according to an embodiment of the present invention

Figure 5 is a cross-sectional view showing the configuration of the spring connector pin according to an embodiment of the present invention

Figure 6a is a perspective view showing a conductive connector according to an embodiment of the present invention

Figure 6b is a perspective view showing a process in which the conductive connector is installed in the flip cover according to an embodiment of the present invention

7 is a plan view showing a flip cover according to an embodiment of the present invention

8A is a cross sectional view taken along the line X1-X1 of FIG.

FIG. 8B is a cross-sectional view of the line Y1-Y1 of FIG.

Figure 9 is a perspective view showing that the flip cover is mounted on the main body according to an embodiment of the present invention

Figure 10 is a bottom view showing a state in which the hinge module is mounted to the receiving portion of the upper housing according to an embodiment of the present invention

FIG. 11 is a cross sectional view taken along the line Z1-Z1 of FIG. 10;

<Description of the symbols for the main parts of the drawings>

1: hinge housing 2: hinge shaft

3: Spring connector pin 4: Hinge cam

5: Hinge cover 6: Compression coil spring

110: upper casing frame 200: flip cover

M1, M2: Hinge Module

Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention. First, in describing each of the drawings, only the same components have the same reference numerals as much as possible even if shown on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view showing a flip-type mobile phone according to an embodiment of the present invention. The present invention refers to a mobile phone including CT-2, PCS, HHP and the like among portable devices.

Referring to the drawings, the mobile phone 300 shown in the drawing is a flip-type mobile phone, which means that the flip cover 200 is opened. That is, the mobile phone 300 is in an off-hook state capable of making a call.

Typically, a state where a call can be made is called an off hook state of the mobile phone. On the other hand, a state where a call cannot be made is called an on hook state of the mobile phone.

The main components of the flip-type mobile phone of the present invention are shown in the drawing embedded in the main body 100, the flip cover 200 detachably assembled to the main body 100, and the housing 105 of the main body 100 to maintain the opening and closing angle of the flip cover 200. Not hinges. The main body 100 includes an upper casing frame 110 and a lower casing frame 112.

In addition, the hinge device not shown in the drawings mechanically connects the flip cover 200 to the main body 100, and is structurally connected to the hinge device by a knuckle. The flip cover 200 is opened and closed until the call angle, and the microphone 80 installed on the flip cover 200 is electrically connected to the printed circuit board of the main body 100.

In the mobile phone 300 of the present invention, an ear piece 102 including an antenna unit 101 (antanna unit) and a speaker is located at the top of the main body 100, and an LCD unit 103 (LCD unit) is located below the ear piece 102. Is disposed, a key pad 104 (key pad) including a plurality of keys is provided below the LCD unit 103. Then, the microphone device 80 (microphone) is located at the bottom of the flip cover 200.

The flip cover 200 according to the first embodiment of the present invention has a configuration in which the microphone 80 is mounted. Therefore, the flip cover 200 is provided with a space for the microphone 80 is mounted, the flip cover 200 is assembled to the case by a separate label or sheet-type cover laser fusion.

In the mobile phone of the present invention, the microphone 80 is installed on the lower side in consideration of the communication distance (14 cm) between the ear piece 102 and the microphone 80, and the microphone is installed on the flip cover for miniaturization of the main body. At this time, the microphone 80 is electrically connected to the audio circuit of the main body 100 by an electrical contact structure not shown in the drawing embedded in the receiving unit of the main body 100.

When the microphone 80 mounted on the flip cover is electrically connected to the audio circuit of the main body 100, the microphone connection mechanism is described in detail by separating the contact structure of the hinge device and the flip cover, respectively.

2 is a perspective view showing the assembled hinge module according to an embodiment of the present invention.

Figure 3 is an exploded perspective view showing the configuration of a hinge module according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing the configuration of the assembled hinge module according to an embodiment of the present invention.

First, as shown in FIGS. 8 and 9, the hinge device of the present invention is composed of two hinge modules M1 and M2 (hinge modules), and each of the hinge modules M1 and M2 is provided in a lower portion of the main body 100. Are mounted on each.

Since the hinge modules M1 and M2 of the hinge apparatus of the present invention have the same configuration, one hinge module M1 will be described as an example. The hinge module of the present invention not only hinges for opening and closing the flip cover, but also takes electrical contact structure by adding a component called a spring connector pin.

The hinge module M1 is configured to be assembled to the receiving portion of the main body in the axial direction A1, and the components of the hinge module are also assembled to the axial direction A1.

2 to 4, the hinge module of the present invention includes a hinge housing 1, a hinge shaft 2 inserted into the hinge housing 1 in the rotational axis A1 direction, and the hinge shaft 2. A spring connector pin 3 press-fitted in the rotation axis A1 direction, a hinge cam 4 engaged with the hinge shaft 2, and a hinge cover 5 coupled to the outermost portion of the hinge housing 1; ) And a compression coil spring 60 interposed between the cam hinge 4 and the hinge cover 5.

Referring to the components of the hinge module M1 in detail,

The hinge housing 1 has a top surface 11 and a bottom surface 12 in consideration of the assemblability of the assembling company. The guide hole 13 extends in the longitudinal direction (rotation axis direction A1) on the upper surface 11 of the hinge housing 1, Facing holes 14 are formed at predetermined positions, respectively.

The hinge shaft 2 inserted into the hinge housing 1 has a ridge 21 formed at one side thereof, and a shaft 22 at the other side thereof. The end 22a of the shaft 22 is formed by alternating the plane 22c and the curved surface 22d. That is, the end portion 22a of the shaft has a pair of curved surfaces 22d facing each other and a pair of curved surfaces 22d facing each other. The end portion 22a of the hinge shaft corresponds to the shape of the locking portion of the flip cover.

When the flip cover is coupled to the end 22a of the hinge shaft, the hinge shaft also rotates together with the flip cover during the flip cover opening and closing operation.

A hole is formed in the rotation center axis direction (assembly direction) of the hinge shaft 2. In addition, the spring connector pin 3 is fixed to the hole by a press-fit process. When the spring connector pin 3 is press-fitted to the hinge shaft 2, one end and the other end of the spring connector pin 3 is exposed to both end surfaces of the hinge shaft 2, respectively.

Accordingly, the small diameter portion 32a of the spring connector pin is exposed to one end surface of the hinge shaft 2, and the cylinder 31 of the spring connector pin is fixed to expose a portion of the other end surface of the hinge shaft 2. The end of the cylinder 31 is in a state where the wire 34 is drawn out. This wire 34 is connected to the audio circuit of the main body. The configuration of the spring connector pin 3 will be described in detail with reference to FIG. 5.

The cam hinge 4 engaged with the hinge shaft 2 is inserted into the guide hole 14 of the hinge housing at an upper portion thereof so that the guide protrusion 41 is upwardly formed to move back and forth in a straight line, and the hill 42 and the valley are formed on one side of the hinge cam 4. The dies 43 are alternately formed, ie the hinge cam 4 has a pair of opposing ridges 42 and a pair of opposing valleys 43 on one side.

The insertion hole 44 is formed by the central axis A1 which is the rotation shaft of the hinge shaft and the flip cover. That is, the hole 44 faces coaxial with the spring connector pin 3. At this time, the insertion hole 44 is larger than the diameter of the cylinder 31 of the spring connector pin.

The reason why the diameter of the insertion hole 44 is larger than the diameter of the cylinder 31 is that the spring connector pin 3 is pressed into the hinge shaft 2. That is, the hinge shaft 2 is also rotated in accordance with the rotation of the flip cover, and the diameter of the insertion hole 44 is made larger than the cylinder 31 diameter in order to prevent the rotation operation of the hinge shaft 2 from being constrained by the hinge cam 4.

Then, the hinge cover 50 is assembled to the outermost part of the hinge housing 1, and a compression coil spring 6 is interposed between the cam hinge 4 and the hinge cover 5 before the hinge cover assembly. Of both ends of the compression coil spring 6, one end is supported by the hinge cam 4, the other end is supported by the hinge cover 5. The compression coil spring 6 thereby provides a force to the hinge cam 4.

The hinge cover 5 is formed such that the protrusion 51 inserted into the guide hole 14 is protruded to one side, and the hook 52 is caught by the locking hole 14 of the hinge housing on both sides. The guide protrusion 51 is inserted into the guide hole 13.

At this time, a hole 53 larger than the diameter of the wire 34 is formed coaxially in the insertion hole 44. This means that when the hinge shaft 2 rotates together with the rotation of the flip cover, the spring connector pin 3 also rotates with the rotation of the hinge shaft 2, and the wire 34 rotates with the wire 34 with the spring connector pin 3 rotating. This is because the rotation of the wire 34 is not constrained by the hole 53 when the wire 34 rotates while the wire 34 penetrates.

Figure 5 is a cross-sectional view showing the configuration of the spring connector pin according to an embodiment of the present invention.

Most preferably, the conductive means press-fitted to the hinge shaft is a spring connector pin, and the spring connector pin 3 is a cylindrical cylinder 31 and a conductive rod 32 installed in the cylinder 31 and moving in the longitudinal direction of the cylinder 31. And a compression coil spring 33 mounted on one inner side of the cylinder to hold the conductive rod 32.

The conductive rod 32 is formed to be short and comprises a small diameter portion 32a and a large diameter portion 32b. An end of the small diameter portion 32a has a curved surface, and a wire 34 is fixed to the end surface of the large diameter portion 32b.

Accordingly, the one end surface of the cylinder 31 is formed with a hole 31a which is slightly larger than the diameter of the small diameter portion 32a so that the small diameter portion 32a is exposed to the outside of the cylinder 31, and the other side surface has a hole 31b larger than the wire 34 diameter. In this assembling state, the conductive rod 32 is always maintained in a state of receiving a force to be in close contact with one side by the elastic force provided by the compression coil spring 33.

Figure 6a is a perspective view showing a conductive connector according to an embodiment of the present invention.

Figure 6b is a perspective view showing a process in which the conductive connector is installed in the flip cover according to an embodiment of the present invention.

As shown in FIG. 6A,

Referring to the conductive connector 7 assembled in the engaging portion of the knuckle formed in the flip cover of the present invention in detail as follows.

Connector 7 according to an embodiment of the present invention has a shape corresponding to the space of the engaging portion and the end of the hinge shaft, the upper surface 71 and the lower surface 72 is a plane, the front 73 and the rear 74 is a plane. And both sides 75 are curved surfaces. Further, a recess 76 is formed at the center of the upper surface 71, and a slit 77 is formed at the upper surface 71 and the front surface 73. The slit 77 extends in the vertical direction.

In this case, the reason why the recess 76 is formed in the center of the conductive connector is to consider the safe contact with the small diameter portion exposed on the end surface of the hinge shaft, and the slit is a flexible printed circuit (FPC) drawn from the microphone rophone. The end of the printed circuit is inserted and soldered (soldering) place.

As shown in Figure 6b,

In the flip cover 200 of the present invention, a knuckle 210 is formed, and a neck 201 is formed on the way to the knuckle 210 from the flip cover. Then, the engaging portion 220 is formed inside the knuckle 210. At this time, a detachable hole 211 is formed at a predetermined position on the outer circumferential surface of the knuckle 210, and a hole 221 through which the flexible printed circuit of the microphone penetrates is formed in the plane facing the neck 201 of the engaging portion 220. Furthermore, a hole 212 is formed in the neck 201 of the knuckle 210 through which the flexible printed circuit of the microphone penetrates. In addition, the conductive connection terminal 7 of the present invention is assembled in the direction of the arrow to the engaging portion 220 of the flip cover. The conductive connection terminal 7 is fixed to the bottom surface of the engaging portion 220.

As shown in Figure 7 to 8b, the microphone is installed on the top of the flip cover in consideration of the distance of the ear piece of the main body. The flexible printed circuit connected with such a microphone is branched from the middle to both sides and directed toward both necks, respectively. Then, it is connected to the conductive connecting terminal attached to the engaging portion of the knuckle through a hole formed near the neck. An end of the flexible printed circuit is inserted into the slit of the conductive connector and then fixed by soldering.

As a result, the microphone 80 mounted on the top of the flip cover 200 has a configuration electrically connected to the engaging portion 220.

As shown in FIG. 9, a hinge module (not shown) is mounted on the accommodating part 105 of the main body 100, a microphone 80 is installed on the flip cover 200, and a conductive connection terminal is assembled on the latching part 220 of the flip cover. By connecting the end of the flexible printed circuit of the microphone and the connector in a work state as shown in the drawing.

The end portion 22a of the hinge shaft is exposed on both side surfaces 105a of the lower portion of the upper casing frame, and the small diameter portion 32a of the spring connector pin is exposed on the end portion 22a surface. At this time, the small diameter portion 32a is elastically supported in the rotation axis direction A1.

When the engaging portion 220 of the flip cover is inserted into the end portion 22a of the hinge shaft, the flip cover is mounted on the hinge device. When the flip cover 200 is coupled to the upper casing frame 110, the microphone is electrically connected to the printed circuit board of the main body.

On the other hand, when excessive opening and closing force is applied to the flip cover 200 mounted on the hinge device of the upper casing frame 105, both knuckles 210 of the flip cover are separated from the upper casing frame 110 while being slightly open to both sides about the rotation axis.

At the end portion 22a, the locking portion 220 comes out. Since the detachable hole 211 is formed in the knuckle 210 of the flip cover, and the hole for penetrating the flexible printed circuit is formed in the locking portion 220, the flip cover is separated from the main body without transmitting excessive force to the neck of the flip cover.

As such, the flip cover 200 of the present invention is a detachable mechanism in the upper casing frame 105.

As shown in FIGS. 10 and 11,

Looking at the opening and closing action of the flip cover according to the configuration as described above, when the user opens the flip cover 200 to make a call, the end 22a of the hinge shaft 22 rotates together by the rotation angle of the flip cover. Subsequently, in accordance with the rotation operation of the hinge shaft, the cam hinge retreats backward by the sliding surface contact with the valley portion 43 of the cam hinge engaged with the hill portion 21 of the hinge shaft and reaches the top of the hill portion 42, and then slides again. Follow it down naturally. At this time, the flip cover stops at the position where the mountain portion 21 of the hinge shaft and the valley portion 43 of the cam hinge are engaged again by the restoring force of the compression coil spring 60. This is to maintain the angle at which the call is possible.

At this time, the recess 76 of the conductive connector 7 maintains surface contact with the small diameter portion 32a of the spring connector pin. Since the recess 76 and the small diameter portion 32a are curved surfaces, they are excellent in contactability. In addition, since the small diameter portion 32a is in an elastically supported state, the small diameter portion 32a can always be kept in contact with each other. As a result, even when a shock or a drop is applied to the mobile phone, the conductive connector 7 and the small diameter portion 32a remain in contact at all times.

The hinge shaft 2 rotates as the flip cover rotates, and the spring connector pin 3 rotates as the hinge shaft 2 rotates. The small diameter portion 32a of the spring connector pin fixed to the hinge shaft is in constant contact with the recess 76 of the connecting body.

The elastic force is provided twice by the elastic force of the compression coil spring provided in the cylinder and the compression coil spring installed between the hinge cam and the hinge cover.

As a result, summarizing the electrical connection from the microphone to the printed circuit board of the main body, the microphone is connected to the conductive connector by a flexible printed circuit, and the recess 76 of the connector contacts the end of the small diameter portion, The wire coupled to the neck is connected to the audio circuit of the body, so that the microphone is finally connected to the audio circuit located on the printed circuit board of the body.

As a result, while performing the operation of the flip cover as described above, the flip cover is detachable from the main body, and when the flip cover is mounted on the main body, the electrical connection between the microphone and the printed circuit board of the main body is always maintained. That is, when the flip cover is separated from the main body, the normal communication is performed by combining the flip cover again.

In addition, the appearance is improved by covering the sheet plastic or sliding cover to hide the microphone and the flexible circuit exposed to the plane of the flip cover.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, in the flip-type mobile phone, in the process of electrically connecting the microphone mounted on the flip cover to the main body, the assembly is simple, robust and effective in improving productivity, and achieves high reliability of the product.

Claims (4)

A hinge housing, a hinge shaft assembled to the hinge housing, a hinge cam engaged with the hinge shaft, a compression coil spring for supporting the hinge cam, and a lock on the outermost side of the hinge housing. In a flip-type mobile phone having a hinge device configured to be mounted to each of the receiving portion of the upper casing hinge module consisting of a hinge cover to open and close the flip cover, A microphone and a flexible printed circuit drawn out of the microphone, the flexible printed circuit having both ends, the neck being coupled to the hinge device and detachable at the same time, the knuckle positioned at the end of the neck and the knuckle inside the neck; A flip cover having a formed locking portion; A conductive connector assembled to the engaging portion and connected to both ends of the flexible printed circuit; And The microphone is electrically connected to the audio circuit of the main body by being composed of conductive means connected to the printed circuit board of the main body by being pressed into the hinge shaft in a rotational axis direction to be in constant contact with the conductive connector and to maintain an elastic support. Microphone connection mechanism of a flip-type mobile phone, characterized in that the. The method of claim 1, Both ends of the flexible printed circuit is a microphone connection mechanism of the flip-type mobile phone, characterized in that connected by soldering to the conductive connector in the engaging portion. The method of claim 1, The conductive connecting body has a flat top and bottom surfaces, a front and back surface is also a planar surface, and both side surfaces are curved surfaces, and recesses are formed on the top surface thereof to contact the conductive means, and both ends of the flexible printed circuit are positioned over the top and front surfaces. Microphone connection mechanism of a flip-type mobile phone, characterized in that the slit is formed. The method of claim 1, The conductive means is a spring connector pin, the spring connector pin is cylinder; A conductive rod assembled to the cylinder and moving in the longitudinal direction; And An elastic body installed in the cylinder to support the rod, One side of the conductive rod is exposed at one end of the hinge shaft, the other end of the cylinder microphone connection mechanism of the flip-type mobile phone, characterized in that configured to be exposed at the other end of the hinge shaft.