KR200342536Y1 - Hinge assembly for cellular phone - Google Patents

Abstract

The present invention relates to a mobile phone hinge assembly which induces a stable operation of the cam, suppresses the flow force between the housing and the hinge, and simply configures the assembly structure, the hinge assembly used to hinge open and close the sub-body connected to the main body of the mobile phone A hinge housing having a cam guide hole and a support shaft insertion hole communicating on one axis, and having a support shaft engaging jaw formed at one end of the support shaft insertion hole and installed at the main body side; A spring inserted into the cam guide hole of the hinge housing and exerting an elastic force in the inserted longitudinal direction; A reciprocating cam inserted into the cam guide hole of the hinge housing so as to be linearly movable, and having one end supported by the spring to give an elastic force; Rotating cam which engages the other end and the end of the reciprocating cam to the cam surface having a mutual dead point, and the other end is connected to the sub body side and guides the sub body to rotate by spring force in the operated rotation direction when the other end passes the top dead center of the reciprocating cam. ; And a support shaft inserted into the spring, the reciprocating cam, and the rotation cam, one end of which is inserted into the support shaft insertion hole of the hinge housing, and the other end of which is fixed to the rotation cam to compress the spring. .

Description

Hinge assembly for cellular phone

The present invention relates to a mobile phone hinge assembly, and more particularly, to a mobile phone hinge assembly which induces a stable operation of the cam, suppresses the flow force between the housing and the hinge, and simply configures the assembly structure.

A general folder-type mobile phone can be divided into a main body in which various input buttons are arranged, and a sub body connected to the main body to be rotated and opened. The subbody includes a display device to display various display information.

In this case, the hinge assembly is used to connect the main body and the sub body so as to be opened and closed.

Conventional hinge assemblies have a pair of cams in a housing that are commonly coupled to the main body, and the pair of cams are interdigitated from each other by the spring's elastic repulsive force, one of which is axially in the housing. It is movably installed and the other cam is coupled to the subbody side. At this time, the cam connected to the subbody side is connected to the shaft fixed to the housing side.

In such a hinge assembly, each time the subbody is opened and closed, the subbody side cam is opened or closed by the spring force while the subbody side cam is rotated along the operation direction and is over the top dead center of the cam surface. Normally, the top dead center of the cam surface is formed every 180 degrees so that the subbody can fully open and close within 180 degrees.

Therefore, even if the hinge assembly has many opening and closing operations, the opening and closing positions of the opening and closing operations must be correctly maintained in the original assembly state.

For this purpose, there should be no deformation of the housing, and the straight position of the subbody side cam connected between this housing and the shaft should not change.

However, the conventional hinge housing is vulnerable to deformation by applying a shape that is drilled downward, invasion of foreign matter was possible. In addition, while the connection structure between the shaft and the cam disposed in the hinge housing maintains the coaxial, stable opening and closing operation is difficult, so that the flow between the hinge housing and the hinge occurs, which causes interference and noise when opening and closing the subbody.

In addition, the number of parts, such as using a separate rocker in the connection structure of the shaft is added, the assembly process is complicated and has a problem of increasing the production cost.

Therefore, the present invention is to solve the problems of the prior art as described above, to improve the opening and closing stability in the hinge structure of the mobile phone, and to simply improve the assembly structure to provide a mobile phone hinge assembly that reduces labor and improve productivity. Its purpose is.

Specific means of the present invention for achieving the above object,

In the hinge assembly used to hinge open and close the subbody connected to the main body of the mobile phone,

A hinge housing having a cam guide hole and a support shaft insertion hole communicating in one axis, and having a support shaft engaging jaw formed at one end of the support shaft insertion hole and installed at the main body side;

A spring inserted into the cam guide hole of the hinge housing and exerting an elastic force in the inserted longitudinal direction;

A reciprocating cam inserted into the cam guide hole of the hinge housing so as to be linearly movable, and having one end supported by the spring to give an elastic force;

Rotating cam which engages the other end and the end of the reciprocating cam to the cam surface having a mutual dead point, and the other end is connected to the sub body side and guides the sub body to rotate by spring force in the operated rotation direction when the other end passes the top dead center of the reciprocating cam. ; And

Inserted into the spring, the reciprocating cam and the rotating cam has a locking jaw that one end is inserted into the support shaft insertion hole of the hinge housing and the other end is fixed to the rotating cam, characterized in that consisting of a support shaft for compressing the spring.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description of the present invention, which serves to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings. It should not be construed as limited to.

1 is an exploded perspective view of the hinge assembly according to the present invention.

Figure 2 is an assembled state of the hinge assembly according to the present invention.

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

4 is a cross-sectional view taken along line B-B of FIG. 2.

5 is an assembled state of the hinge assembly according to a modification of the present invention.

6 is a perspective view of a mobile phone to which the hinge assembly of the present invention is applied.

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

20: hinge housing

21: Cam Guide

22: support shaft insertion hole

22a: incision groove

23: support shaft locking jaw

25: boss

30: spring

40: round trip cam

50: Revolving Cam

60: support shaft

61a: jamming jaw

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is a hinge assembly 100 used to hinge open and close the subbody 14 connected to the main body 12 of the mobile phone 10 as shown in FIG.

2 is an assembled state diagram as an embodiment of the hinge assembly 100 according to the present invention, Figure 3 is a cross-sectional view taken along the line A-A of Figure 2, Figure 4 is a cross-sectional view taken along the line B-B of FIG.

In FIG. 2 to FIG. 4, reference numeral 20 denotes a hinge housing included in the hinge assembly 100.

The hinge housing 20 is installed on the main body 12 side, preferably injection-molded with a resin material, the vertical cross section in the longitudinal direction forms a sealed cross section.

The reason why the hinge housing 20 is formed in a closed cross section is to suppress deformation during use after assembly, thereby bringing assembly errors between the parts and stability of the hinge operation.

The hinge housing 20 has a cam guide hole 21 and a support shaft insertion hole 22 communicating with the hinge shaft X, and a support shaft locking jaw 23 at one end of the support shaft insertion hole 22. The conical inclined surface 24 is formed in the other end.

At this time, the support shaft insertion hole 22 may be configured to be connected to the hinge housing 20 through the cylindrical boss portion 25 of a predetermined length as shown in FIG. 5 is an assembled state diagram of the modified hinge assembly 100 according to the present invention.

The support shaft insertion hole 22 may preferably include a plurality of cutting grooves 22a as shown in FIG. 4 to exert expansion and tightening of the diameter when the support shaft 60 is inserted.

Reference numeral 30 denotes a spring.

The spring 30 is inserted into the cam guide hole 21 of the hinge housing 20 in the form of a coil, and serves to exert an elastic force in the inserted longitudinal direction.

Reference numeral 40 denotes a reciprocating cam, and reference numeral 50 denotes a rotation cam.

The reciprocating cam 40 is inserted into the cam guide hole 21 of the hinge housing 20 so as to be linearly movable, and one end of the reciprocating cam 40 is supported to receive an elastic force on the spring 30.

The rotating cam 50 is engaged with the cam surface having a mutual dead point as the other end and one end of the reciprocating cam 40 and the other end is connected to the subbody 14 side, the top dead center of the reciprocating cam 40 After passing through the subbody 14 functions to induce rotation by the force of the spring 30 in the operated rotation direction.

Therefore, the spring 30 is provided in a compressed state such that the reciprocating cam 40 and the rotating cam 50 are bitten by the cam surface by exerting elastic repulsive force.

Reference numeral 60 denotes a support shaft.

The support shaft 60 is inserted into the spring 30, the reciprocating cam 40, and the rotation cam 50. The support shaft 60 has a locking jaw (61a) one end is inserted into the support shaft insertion hole 22 of the hinge housing 20 and the other end is fixed to the rotation cam 50 to compress the spring 30 have.

In detail, the support shaft 60 is composed of a small diameter portion 61 having a locking jaw 61a and a large diameter portion 62 having a head portion 62a. At this time, the diameter of the small diameter portion 61 is the same as the inner diameter of the support shaft insertion hole 22 of the hinge housing 20, the diameter of the large diameter portion 62 is configured to be smaller than the inner diameter of the coil spring (30). Accordingly, the reciprocating cam 40 is inserted into the large diameter portion 62 of the support shaft 60 and slides in a linear direction.

Unexplained symbol 'W' is a washer.

Assembly of the hinge assembly 100 configured as described above is made as follows.

First, the spring 30 is inserted into the cam guide hole 21 of the hinge housing 20.

Next, the rotating cam 50 and the reciprocating cam 40 are inserted from the small diameter portion 61 having the small diameter of the supporting shaft 60, and the supporting shaft 60 is inserted into the cam guide hole 21 to thereby connect the hinge housing ( The assembly is completed by forcibly fitting into the support shaft insertion hole 22 of 20).

At this time, the end of the support shaft 60 is pushed into the inclined surface 24 and the support shaft insertion hole 22 is forcibly elastically expanded and then restored to its original state while the latching jaw 61a of the support shaft 60 is It is caught by the latching jaw 23 on the hinge housing 20 side.

At this time, the spring 30 pushes the reciprocating cam 40 toward the rotational cam 50 with elastic repulsive force in a compressed state, so that the reciprocating cam 40 and the rotational cam 50 remain coupled to each other by the cam surface. do.

The reason why the rotation cam 50 does not come off is because it is caught by the head portion 62a of the support shaft 60.

Looking at the assembled state of operation,

Rotating cam 50 is rotated along the rotation operation direction of the sub-body 14 in a state coupled to the sub-body (14). At this time, the rotation cam 50 is naturally opened or closed in the operation direction by the cam surface of the reciprocating cam 40 is pushed by the elastic repulsive force of the spring 30 when it exceeds the top dead center with the reciprocating cam 40.

At this time, the reciprocating cam 40 performs linear reciprocating movement along the longitudinal direction of the support shaft 60 in the cam guide hole 21 of the hinge housing 20 every time the rotation cam 50 rotates.

As such, the hinge assembly 100 of the present invention includes a means for fixing the support shaft 60 on the hinge housing 20 side, so that a separate rocker component is unnecessary as in the related art.

This reduces manufacturing and assembly man-hours, thereby increasing productivity.

In addition, the hinge housing 20 is composed of a sealed cross-section to prevent intrusion of foreign matters and durability, and there is little room for deformation, so that the rotation cam 50 operating based on the support shaft 60 does not deviate from the X axis. .

That is, since the rotating cam 50 operates coaxially with the support shaft 60, the flow force is suppressed and the hinge is operated stably so that interference and noise are not generated when the hinge body of the subbody 14 is opened and closed.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea and the following of the present invention are provided by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

As described above, according to the present invention, the method of fixing the support shaft is a simple fixing method of press-fitting, which does not require a separate fixing part, thereby reducing the manufacturing labor and simplifying assembly, thereby greatly increasing productivity.

In addition, one end of the support shaft is firmly connected and fixed directly to the hinge housing side, and the other end is in sliding contact with the inner surface of the cam guide hole of the hinge housing via the reciprocating cam so that there is no fear that the position of the support shaft may change. Therefore, there is no change in the rotation axis position of the rotating cam connected to the support shaft, even if the sub body is repeated a number of times, the sub body does not cause a problem in the hinge stability to move relative to the hinge axis.

Claims (4)

In the hinge assembly used to hinge open and close the subbody 14 connected to the main body 12 of the mobile phone 10, It has a cam guide hole 21 and the support shaft insertion hole 22 communicated in a uniaxial line, the support shaft engaging jaw 23 is configured at one end of the support shaft insertion hole 22, the main body 12 side A hinge housing 20 installed in the hinge housing 20; A spring 30 inserted into the cam guide hole 21 of the hinge housing 20 and exerting an elastic force in the inserted longitudinal direction; A reciprocating cam (40) inserted into the cam guide hole (21) of the hinge housing (20) so as to be linearly movable, and one end of which is supported to receive an elastic force on the spring (30); When the other end of the reciprocating cam 40 and one end is engaged with a cam surface having a mutual dead point, and the other end is connected to the sub body 14 side and the top end of the reciprocating cam 40 passes, the sub body 14 is operated. A rotation cam 50 which induces rotation by a spring 30 force in a rotational direction; It is inserted into the spring 30, the reciprocating cam 40 and the rotation cam 50 has a locking jaw (61a) is inserted into the support shaft insertion hole 22 of the hinge housing 20, the other end is rotated The mobile phone hinge assembly, characterized in that consisting of a support shaft 60 is fixed to the cam 50 to compress the spring (30). The method of claim 1, The hinge housing (20) is a mobile phone hinge assembly, characterized in that the periphery of the vertical cross section in the longitudinal direction made of a resin material. The method of claim 1, The support shaft insertion hole 22 is a mobile phone hinge assembly, characterized in that connected to the hinge housing 20 through a cylindrical boss portion 25 of a predetermined length. The method of claim 1, The support shaft insertion hole 22 is a mobile phone hinge assembly, characterized in that it includes a plurality of incision grooves (22a) to exert an expansion and tightening of the diameter when the support shaft (60) is inserted.