KR100238538B1 - Hinge mechanism for flip-type portable radiophone - Google Patents

Abstract

The flip cover opening and closing device of the flip-type portable terminal of the present invention, the disclosed opening and closing means (c) is provided with a fastening portion at both ends rotating shaft to rotate like a flip cover; Two pairs of fixing brackets symmetrically disposed in the axial direction of the rotation shaft, and having an opening extending downwardly in an upper center thereof to securely position the rotation shaft; A first cam having a pair of curved surfaces and a plane, respectively, fixed to the rotation shaft in a state in which the pair of curved surfaces are upright, and providing an opening and closing angle to a flip cover; It is fixed side by side next to the first cam of the rotating shaft in an inclined state at a predetermined angle, and the flip cover is continuously closed when the flip cover is closed in the main body, or the flip cover is opened when the flip cover is opened to the call angle in the main body. A second cam having an edge rounded to a rhombus shape; Plate springs installed in surface contact with the first and second cams, respectively, for sliding movement according to opening and closing of the flip cover; And a base plate on which the leaf spring and the fixing bracket are bent and fixed upward.

Description

Flip cover switch for flip type portable terminal {HINGE MECHANISM FOR FLIP-TYPE PORTABLE RADIOPHONE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flip type portable terminal, and more particularly, to a flip cover opening and closing device for connecting a main cover and a flip cover and maintaining an opening and closing angle of the flip cover.

In general, a portable terminal refers to a mobile device such as a mobile phone, a CT-2, a cordless phone, a car phone, and the like. In this case, the portable terminal performs a communication function while performing wireless communication with the base station, and the wireless telephone performs a communication function while the portable device performs wireless communication with a fixed device.

Currently, the wireless telephones are miniaturized in accordance with the trend of miniaturization of high-sensitivity electronic components, which is why the flip-type wireless telephones having excellent negative sensitivity have become common. This is because the flip cover installed in the terminal body protects a plurality of function buttons and moreover serves as a negative reflector. Moreover, the flip type portable terminal is advantageous for miniaturization.

The flip type portable terminal includes a flip cover and a main body and an opening and closing device (flip module) connecting the flip cover and the main body. In this case, the microphone may be located at the bottom of the main body or may be located at the flip cover. Such facts will be readily understood by those of ordinary skill in the art.

Currently, the portable terminal has been miniaturized, but there is a limit to the miniaturization of the portable terminal 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 transmitter (microphone) and the receiver (speaker) should be 14 cm or more, so the overall size of the portable terminal must satisfy this condition.

Therefore, the current portable terminal satisfies the above conditions by installing a microphone in the flip cover of the flip type wireless telephone, and can accelerate the miniaturization of the portable terminal.

However, the flip type portable terminal as described above frequently causes breakage (loss of flip cover function) due to mechanical coupling between the flip cover and the main body. Furthermore, the flip cover opening and closing device connecting between the flip cover and the main body is made of a plastic injection molding, and if the severe operating state is maintained, the durability is greatly reduced, and further development of the flip cover or the opening and closing device may occur.

Therefore, when the microphone is installed on the flip cover, if the flip cover opening / closing device is broken, the microphone is separated from the main body and the terminal on which the microphone is installed on the flip cover cannot be used. That is, in the case of a portable terminal in which the microphone is installed in the flip cover, the connection between the microphone and the main body located in the flip cover by mechanical connection is caused by the durability of the portable terminal due to wear of the connection part or damage due to fragility of the connection part. Will be greatly reduced.

As a result, the reliability of the product is deteriorated due to this problem, and eventually, an uneconomic problem occurs in which excessive repair costs (such as damaged parts replacement costs) are excessively spent.

In addition, the conventional flip cover opening and closing device is excessive in the number of parts deterioration in assemblyability and operation force is lowered reliability.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide an opening and closing device of a flip-type portable terminal in pursuit of high reliability and durability.

Another object of the present invention to provide a flip cover opening and closing device of an economical flip type portable terminal due to the reduction of the number of parts.

Still another object of the present invention is to provide a flip cover opening and closing device of a flip type portable terminal in which parts are integrated in consideration of assembly and operability.

In order to achieve the above objects, the present invention mechanically connects the main body (a), the flip cover (b) and the main body (a) and the flip cover (b) and at the same time opening and closing to maintain the opening and closing angle of the flip cover In a flip-type portable terminal composed of means (c),

The opening and closing means (c)

A rotating shaft provided at both ends to rotate together with a flip cover;

Two pairs of fixing brackets symmetrically disposed in the axial direction of the rotation shaft, and having an opening extending downwardly in an upper center thereof to securely position the rotation shaft;

A first cam having a pair of curved surfaces and a plane, respectively, fixed to the rotation shaft in a state in which the pair of curved surfaces are upright, and providing an opening and closing angle to a flip cover;

It is fixed side by side next to the first cam of the rotating shaft in an inclined state at a predetermined angle, and the flip cover is continuously closed when the flip cover is closed in the main body, or the flip cover is opened when the flip cover is opened to the call angle in the main body. A second cam having an edge rounded to a rhombus shape;

Plate springs installed in surface contact with the first and second cams, respectively, for sliding movement according to opening and closing of the flip cover; And

The plate spring and the fixing bracket is bent to include a base plate fixed to the upper side.

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

Figure 2 is a perspective view showing a flip cover opening and closing device of a flip-type portable terminal according to an embodiment of the present invention

Figure 3 is a perspective view showing the installation state of the cam according to an embodiment of the present invention

* Explanation of symbols for main parts of the drawings

10: rotating shaft 20: bracket

30: First Cam 40: Second Cam

51a, 51b, 52a, 52b: leaf spring 60: base plate

100: flip cover opening and closing device

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 portable terminal according to an embodiment of the present invention. Referring to the drawings,

The flip type portable terminal basically includes a main body 300, a flip cover 200, and a flip cover opening and closing device connecting the main body and the flip cover. In addition, the support arm 210 is used to fix the flip cover 200 to the main body 300 with the screw 220.

An antenna 310 is installed at the top of the main body 300, and a speaker 320 and an LCD window 330 are positioned below the antenna. The function key 340 is positioned under the window and the flip cover is assembled at the bottom of the window. At this time, the flip cover 200 is fastened to the opening and closing device built in the accommodating part 350 to maintain the opening and closing angle. Here, the opening and closing angle means the call angle (about 135˚) and the closing angle (0˚). The flip cover 200 is equipped with a microphone to maintain the distance to the speaker.

The flip cover 200 is assembled using two screws 220 to the flip cover opening and closing device built in the accommodating part 350. Flip cover 200 and support arm 210 are independent. In addition, a fixing member (not shown) for supporting the arm is used under the screw.

2 is a perspective view showing a flip cover opening and closing device of a flip-type portable terminal according to an embodiment of the present invention. Referring to the drawings, the basic components are roughly divided into

The flip cover opening and closing device 100 includes a rotation shaft 10 having fastening portions 11 and 12, first and second cams 30 and 40 fixed side by side to be spaced apart from the rotation shaft, and an elastic force to the cam. It is composed of two pairs of elastic bodies (51a, 51b, 52a, 52b) to provide, two pairs of brackets (21, 22) for supporting the rotary shaft 10, and a base plate (60) for fixing the elastic body and the bracket.

The components are described in detail as follows.

The rotating shaft 10 of the metal material has fastening portions 11 and 12 having fastening holes 11a and 12a formed at both ends thereof. The holes 11a and 12a are for assembling the flip cover to the main body using screws.

Of the two cams fixed to the rotating shaft 10, the upper and lower surfaces of the first cam 30 are convex curved surfaces 31, and both sides are flat surfaces 32. The second cam 40 has a rhombus cross section and is rounded at an edge thereof. The first cam 30 is fixed to the shaft 10 in an upright state, and the material is plastic. The second cam 40 is fixed to the shaft 10 in the inclined direction, the material is plastic. At this time, the inclination direction angle of the second cam 40 is about 45 degrees is most appropriate. This is to maintain the call angle (about 135˚).

An elastic body that provides elastic force to each of the cams 30 and 40 is most suitable for leaf springs 51a, 51b, 52a, and 52b having curved surfaces. These pair of leaf springs 51a, 51b are placed opposite to the sides of the cam 30, and each pair 51a, 51b, 52a, 52b is located symmetrically. Therefore, the elastic force is provided on both sides. The leaf spring is attached at least one layer. In the figure a four-ply leaf spring is shown.

One side of the leaf spring extends to be bent and fixed to the base plate 60, and the other side thereof is in intimate contact with the surfaces of the cams 30 and 40.

The rotating shaft 10 is supported by the brackets (21, 22). The pair of brackets 21 and 22 of the metal material are placed in the axial direction, are installed symmetrically to each other and bent and fixed to the base plate 60. Openings 53a and 53b are formed in the upper center to fix the rotating shaft 10, respectively. The pair of brackets 21 and 22 are positioned to surround the pair of leaf springs 51a, 51b, 52a and 52b and the cams 30 and 40, respectively. In addition, the lower portions of the brackets 21 and 22 are portions fixed to the base plate 60, and the upright portions support the shafts in a balanced manner.

The brackets 21 and 22 and the leaf springs 51a, 51b, 52a, and 52b are bent and fixed to the base plate, and the plate fixes the leaf spring and the bracket by bending. The material of the leaf springs or brackets 21 and 22 and the base plate 60 described above is most appropriate in consideration of durability.

In addition, a free space 53 is provided between the two pairs of brackets 21 and 22, and the space is inserted into a rib not shown when mounted on the housing of the main body. Strongly fixed to the payment.

Figure 3 is a perspective view showing a fixed state of the cam of the flip cover opening and closing apparatus according to an embodiment of the present invention. Looking at the operation state with reference to the drawings as follows.

As described above, the first cam 30 is fixed to the rotating shaft 10 so that the curved surface 31 faces in the vertical direction, and the second cam 40 is fixed in the inclined direction. Since the second cam 40 has a rhombus in cross section, curved surfaces 41 and 42 are alternately positioned. The larger diameter of the second cam is inclined about 45 degrees. In this way, the shape of each of the first and second cams is different, and the fixed angle is different to maintain the opening and closing angle of the flip cover using the elastic force of the leaf spring.

Referring back to FIG. 2, the operation of the flip cover when the flip cover maintains the closing angle in the main body, that is, when the flip cover is closed in the main body, has the curved surface 31 facing up and down, and the second cam The cam 40 maintains a state in which the larger diameter portion is inclined in the inclined direction. At this time, one side of the leaf spring (52a) is maintained in close contact with the plane 32 of the first cam (32). The operation of the opposite leaf spring 52b is also the same. Flow is prevented by the spring 52a. The flip cover is not easily opened in the main body by the elastic force under any external shock or swing. The leaf springs 51a and 51b of the second cam also perform the same state.

When the user forcibly opens the flip cover to make a call, the rotating shaft 10 rotates together, and the first and second cams 30 and 40 simultaneously rotate together.

When the operation of the first cam 30 of the two cams is described first, when the flip cover rotates toward the call angle, one side of one leaf spring 52a that is in contact with the cam plane 32 is one plane. At 32, another plane 32 is reached via curved surface 31. Another leaf spring 52b facing each other has the same function. At this time, one side of the leaf spring (52a, 52b) is blunt, and advances again. That is, the flow is prevented by the elastic force of the leaf spring.

Simultaneously, when the flip cover rotates to the call angle, the second cam 40 has one side of the leaf spring 51a passing through one side 42 and another side 41 in a state in which the larger diameter is inclined. Reach the opposite side 42 via. The opposite leaf spring 51b operates in the same way. This leaf spring is blunted and then advanced again to prevent the flow of the flip cover.

In the operation of such a cam, the two cams are positioned approximately 45 degrees apart, so that when the rotation angle of the flip cover exceeds 90 degrees when the cams 30 and 40 are rotated, the force to close when the cam is closed continues. If it is opened, it continues to provide the power to open. This force is due to the elastic force of the leaf spring and the shape of the cam (interaction force between the first cam and the second cam).

As a result, the opening and closing angles of the flip cover are maintained by the shapes of the cams 30 and 40, the fixed angles of the cams, and the leaf springs 51a, 51b, 52a, and 52b providing the elastic force.

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, the present invention is effective in improving durability and reducing the number of parts of the flip cover opening and closing device in the flip type portable terminal.

Claims (3)

In a flip-type portable terminal comprising a main body (a), a flip cover (b) and opening and closing means (c) for mechanically connecting the main body (a) and the flip cover (b) and maintaining the opening and closing angle of the flip cover. , The opening and closing means (c) A rotating shaft provided at both ends to rotate together with a flip cover; Two pairs of fixing brackets symmetrically disposed in the axial direction of the rotation shaft, and having an opening extending downwardly in an upper center thereof to securely position the rotation shaft; A first cam having a pair of curved surfaces and a plane, respectively, fixed to the rotation shaft in a state in which the pair of curved surfaces are upright, and providing an opening and closing angle to a flip cover; It is fixed side by side next to the first cam of the rotating shaft in an inclined state at a predetermined angle, and the flip cover is continuously closed when the flip cover is closed in the main body, or the flip cover is opened when the flip cover is opened to the call angle in the main body. A second cam whose edge is routed in a rhombus shape to stop; A leaf spring installed in surface contact with each of the first and second cams and sliding in accordance with opening and closing of the flip cover; And Flip cover opening and closing device of a flip-type portable terminal comprising a base plate is bent to the plate spring and the fixing bracket is fixed to the upper side. The flip cover opening and closing device of claim 1, wherein the leaf spring has at least one layer. The flip cover opening and closing device of a flip-type portable terminal according to claim 1, wherein the mounting direction angle toward the second cam is fixed to the rotational shaft and is about 45 degrees.

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