KR100418050B1 - Hinge unit and Hinge structure - Google Patents

Abstract

(Problem) Using a hinge unit for regulating the angle, a hinge structure is obtained which ensures that the boss slides in the axial direction and prevents the fluctuations in the rotational directions of the first and second casings.

(Solution means) The cylindrical case 45 is arrange | positioned in the fixing part 46, and the shaft 34 is fitted in the axial center part of the cylindrical case 45. On the other hand, on the outer circumferential surface of the slide cam 38, the engaging convex part 51 which is slidably engaged with the engaging convex part 49 formed in the cylindrical case 45 is formed. As a result, the slide cam 38 can slide in the axial direction with respect to the cylindrical case 45, but cannot be rotated. Accordingly, the cylindrical cam 45 is attached to the fixing portion 46 by allowing the slide cam 38 integrally assembled as the hinge unit 10 to be axially movable relative to the cylindrical casing 45. Only the swing at the time of rotating the lid 20 is eliminated. Therefore, the hinge unit 10 itself ensures the slide movement in the axial direction of the slide cam 38 and absorbs the fluctuation in the rotational direction.

Description

Hinge unit and hinge structure

The present invention relates to a hinge unit for restricting the rotation angle, and a hinge structure for relatively rotatably supporting the first casing and the second casing by using the hinge unit.

9 and 10 show hinge units 102A and 102B used in the folding cellular phone 100, with the first casing 104 and the second casing 106 centered around the hinge units 102A and 102B. ) Becomes rotatable.

Guide protrusions 110A and 110B protrude from the inner circumferential surfaces of the second hinge portions 108A and 108B formed in the second casing 106. On the other hand, guide grooves 114A and 114B that can be engaged with the guide protrusions 110A and 110B are formed on the outer circumferential surfaces of the arm bosses 112A and 112B.

The arm bosses 112A and 22B are disposed in the second hinge portions 108A and 108B in a state where the guide protrusions 110A and 110B are engaged with the guide grooves 114A and 114B. No rotation is possible with respect to 108A, 108B).

Springs 124A and 124B abut on one end faces of the arm bosses 112A and 112B, and the springs 124A and 124B are supported by the springs 124A and 124B toward the sub bosses 120A and 120B. Will be. Moreover, substantially V-shaped recesses 116A and 116B are formed at the other end surfaces of the arm bosses 112A and 112B.

On the other hand, in the first hinge portions 118A and 118B formed in the first casing 104, the sub bosses 120A and 120B facing the arm bosses 112A and 112B are disposed, and the arm bosses 112A and 112B are arranged. The convex portions 122A and 122B, which can be engaged with the recesses 116A and 116B of the arm bosses 112A and 112B, are formed in the cross section toward the c) side.

Here, when the first casing 104 and the second casing 106 are rotated relative to each other, the convex portions 122A and 122B of the sub bosses 120A and 120B and the recesses 116A and 116B of the arm bosses 112A and 112B are used. ), The arm bosses 112A and 112B are slidably moved in the axial direction of the second hinge portions 108A and 108B by the springs 124A and 124B.

However, in the above-mentioned hinge units 102A and 102B, since the arm bosses 112A and 112B are directly mounted to the first casing 104 and the second casing 106, the hinge units 102A and 102B are attached to the first casing. When assembled to the 104 and the second casing 106, the respective bosses 112A and 112B are manufactured by the manufacturing errors of the first casing 104, the second casing 106 and the hinge units 102A and 102B, respectively. Can be slidably moved in the axial direction of the second hinge portions 108A and 108B while the hinge structure in which the first casing 104 and the second casing 106 are not shaken in the rotational direction is not obtained. It is very difficult.

Thus, between the arm bosses 112A and 112B and the second hinge portions 108A and 108B, the arm bosses 112A and 112B have a clearance with respect to the second hinge portions 108A and 108B. In addition to being movable, the phases of the left and right bosses attached to the first casing 104 and the second casing 106 are changed to absorb the margin. Therefore, different boss-shaped dies are required, thereby increasing the manufacturing cost.

This invention is made | formed in view of the said fact, and makes it a subject to ensure that a boss slides to an axial direction, and also to prevent the 1st casing and the 2nd casing in the rotational direction.

1 is a perspective view showing an open state of a lid of a cellular phone provided with a hinge unit according to the present embodiment.

Fig. 2 is a perspective view showing a closed state of the lid of the cellular phone provided with the hinge unit according to the present embodiment.

3 is an exploded perspective view of the hinge unit according to the present embodiment;

4 is a perspective view showing a part of the attachment portion of the hinge unit according to the present embodiment.

5 is a perspective view showing a part of the attachment portion of the hinge unit according to the present embodiment.

6A is a side cross-sectional view of the hinge unit, (B) is a side view of a closed state of the cellular phone, and (C) is a developed view showing an engagement state of a cam surface.

7A is a side cross-sectional view of the hinge unit, (B) is a side view of a state in which the cover of the cellular phone is opened to the middle, and (C) is a developed view showing an engagement state of the cam surface.

8A is a side cross-sectional view of the hinge unit, (B) is a side view of a state in which the cover of the cellular phone is completely open, and (C) is a developed view showing an engagement state of the cam surface.

9 is an exploded perspective view of a conventional hinge structure

10 is a cross-sectional view showing a conventional hinge structure

Explanation of symbols on the main parts of the drawings

10-hinge unit 14-main unit (first casing)

15-stopper 20-cover (second casing)

28-Fixed Cam 36-Compression Coil Spring

38-Slide Cam 45-Tubular Case

47-Groove 48-Projection

49-engaging convex part (engaging part) 51-engaging concave part (engaging part)

An object of the present invention is a cylindrical slide cam that is inserted into the shaft so as to be slidably movable in the axial direction, a fixed cam that is fitted to the shaft and rotates relative to the slide cam, and gripping the slide cam toward the fixed cam side. Gripping means, and a cam surface that is in contact with the contact surface of the fixed cam and the slide cam in contact with the separation cam according to the relative rotation angle of the fixed cam and the slide cam takes the form of contact from the front contact to a partial contact. In the slide cam, an engaging portion is formed on the outer circumferential surface along the axial direction, and an engaging portion that is engageable with the engaging portion of the slide cam is formed on the inner circumferential surface, so that the slide cam is rotated in a state where the slide cam is accommodated. The cylindrical case which absorbs the fluctuations in the furnace is provided inside the shaft portion of the lid. It is sex.

A cam face is formed on abutment surfaces of the slide cam and the fixed cam, and the cam face is contacted / detached according to the relative rotation angle of the slide cam and the fixed cam, and takes the form of abutment from the front contact to the partial contact. do.

On the other hand, the slide cam is accommodated in the cylindrical case. The inner circumferential surface of the cylindrical case is provided with a fitting portion that can be engaged with the engaging portion of the slide cam, allowing movement of the slide cam in the axial direction and absorbing the swing cam in the rotational direction.

In the above-mentioned hinge unit, assuming that the cylindrical case is fixed to the cover and the fixed cam is fixed to the main body, the cam surfaces are formed on the contact surfaces of the slide cam and the fixed cam, respectively, so that the fixed cam and the slide cam The contact state from the front contact to the partial contact is changed according to the relative rotation angle of.

For example, when the cover is opened from the closed state to the open state, the cylindrical case rotates together with the cover, and the slide cam is press-fitted into the cylindrical case by the function of the cam face, thereby partially contacting the cam face. The contact state is reached. If the cover is further opened at this stage, the slide cam slides toward the fixed cam by the holding force of the holding means. This moving force is converted into a force for rotating the slide cam by the cam face.

As described above, since the slide cam is slidable in the cylindrical case of the hinge unit and the swing cam is absorbed in the rotational direction of the hinge unit, only the hinge unit is fixed to the main body and the lid. As a result, the lid is rotatable relative to the main body without swinging.

Therefore, as in the case where the conventional hinge unit without the cylindrical case is mounted on the main body and the cover, there is no need to consider the fluctuation that occurs between the mounting portion and the slide cam, so that the attachment portion of the hinge unit of the main body and the cover and There is no need to consider each manufacturing error of the hinge unit.

The cylindrical case is molded of a material having a large coefficient of friction. Therefore, since the slide cam is subjected to resistance when the slide cam moves in the axial direction in the axial direction, the lid slowly rotates around the shaft to give a sense of quality.

In this embodiment of the present invention, a fixed cam is attached to the first casing, that is, the main body, and a cylindrical casing is attached to the second casing (cover), so that the first casing, which is the main body, and the second casing, which is the lid, are relatively rotated. It is possible.

Thus, since only the hinge unit is fixed to the first casing and the second casing, the first casing and the second casing can be relatively rotatable without swinging, so that the first casing, the second casing, and the hinge unit The attachment is simpler than the conventional hinge structure, which has a problem of fluctuations occurring between the two.

In addition, since the mechanical values such as the rotational torque required for the relative rotation of the slide cam and the fixed cam are determined by the hinge unit itself, dispersion of the rotational torque due to the dimensional error of the first casing and the second casing is small.

On the other hand, a plurality of shaft portions are formed in the second casing, which is a cover, and a cylindrical case is mounted on the shaft portion, and a plurality of holding portions opposed to the shaft portion are formed on the first casing, and the holding portion has a fixed cam. Attached.

Therefore, since the fluctuations in the rotational direction are not absorbed by arranging bosses having different phases as in the related art, the same hinge unit can be used for a plurality of shaft portions. In addition, since it is not necessary to change the phase of the boss as in the prior art, the parts can be shared. Moreover, since a hinge unit can be shape | molded with the same metal mold | die, manufacturing cost can be reduced.

Moreover, the engaging part is formed in the outer peripheral surface of the cylindrical case along the axial direction, and the engaging part which can be engaged with this engaging part is formed in the cover. Therefore, since the cylindrical case is fixed to the lid by simply engaging the engagement portion with the engagement portion, attachment is easy.

And a stopper is formed in the cover which is a 2nd casing, and when this cover is rotated by a predetermined angle, rotation of the said cover is regulated by making the stopper contact with the main body which is a 1st casing. Therefore, there is no fear of damage because the hinge unit is not loaded with a predetermined load or more.

Embodiment of the Invention

1 and 2 show a cellular phone 12 in which a hinge unit 10 (see FIG. 4) according to an embodiment of the present invention is used.

At the end of the main body 14 (first casing) of the mobile telephone 12, a substantially columnar support 16 (holding portion) is formed. Both sides of the support 16 and the dial 18 are cut out concave, so that when the lid 20 (second casing) is covered, the outer surface of the main body 14 and the outer surface of the lid 20 are coincident with each other. have.

In addition, a hinge unit 10 is attached to two substantially cylindrical shaft portions 22 protruding from the lid 20 so as to fit on the support 16, and by the hinge unit 10 a shaft portion ( 22 is rotatably supported by the support 16.

A stopper 15 protrudes from one side of the two shaft portions 22, and when the cover 20 is rotated by a predetermined angle, the stopper 15 abuts on the receiving sheet 16A of the support 16. As a result, the rotation of the lid 20 is regulated. Therefore, there is no fear of damage because the hinge unit 10 is not loaded with a predetermined load or more.

As shown in FIG.4 and FIG.5, the said support body 16 is provided with the cylindrical accommodating part 24 in which the surface facing the shaft part 22 was opened. Guide protrusions (not shown) are formed on a portion of the shaft portion 22 side on the inner circumferential wall of the storage portion 24.

On the other hand, the fixed cam 28 constituting the hinge unit 10 is a concave cam face 32 formed at one end of the cylindrical body as shown in Figs. It is fitted so as to be rotatable. On the outer circumferential surface of the fixed cam 28 is formed a guide groove 30 which can be slid along the guide protrusion of the housing 24, so that the fixed cam 28 can slide in the axial direction of the housing 24. Is maintained so that it cannot be rotated with respect to the support 16.

The shaft portion 22 is formed with a cylindrical fixing portion 46 having a surface facing the support 16, and a protrusion 48 (picked up) along the axial direction on the inner circumferential wall of the fixing portion 46. Alignment part) is formed.

Moreover, the cylindrical case 45 is arrange | positioned in the fixing part 46, The shaft 34 is fitted in the axial center part of this cylindrical case 45. As shown in FIG. The outer peripheral surface of this cylindrical case 45 is provided with the groove part 47 (engaging part) which can be engaged with the said projection 48 along an axial direction. Therefore, the cylindrical case 45 becomes impossible to rotate with respect to the fixed part 46, and is integrated with the axial part 22, and rotates around the shaft 34. As shown in FIG.

In addition, the cylindrical case 45 has a constant thickness, so that an engagement protrusion 49 is formed on the inner circumferential surface of the cylindrical case 45 to face the groove 47 formed on the outer circumferential surface of the cylindrical case 45.

Moreover, the stepped part 45A is formed in the inner peripheral surface of the cylindrical case 45 (refer FIG. 6 (A)), and the cylindrical case 45 has the large diameter side ( It is divided into a large diameter and a small diameter side. The inner diameter dimension of the large diameter side of the cylindrical case 45 becomes substantially the same as the outer diameter dimension of the slide cam 38 mentioned later, and the slide cam 38 can be accommodated in the cylindrical case 45. Moreover, the inner diameter dimension of the small diameter side of the cylindrical case 45 is smaller than the outer diameter dimension of the flange part 40 of the shaft 34 mentioned later, and therefore restricts the slide movement of the slide cam 38. As shown in FIG.

Here, the length from the opening end of the large diameter side of the cylindrical case 45 to the stepped part 45A becomes substantially the same as the length of the slide cam 38, Therefore, the said slide cam 38 is the said fixed cam ( The inner peripheral surface of the cylindrical case 45 slides along the axial direction by the contact with 28).

On the outer circumferential surface of the slide cam 38, an engaging convex portion 49 (engaged portion) of the cylindrical case 45 and an engaging concave portion 51 (engaging portion) that are slidable are formed. Therefore, the slide cam 38 can slide in the axial direction with respect to the cylindrical case 45, but cannot rotate.

In this way, the cylindrical cam 45 is attached to the fixing portion 46 by allowing the slide cam 38 integrally assembled as the hinge unit 10 to slide in the axial direction with respect to the cylindrical casing 45. Only by attaching, the shaking at the time of rotating the lid 20 is eliminated.

Therefore, since the slide unit 38 in the axial direction of the slide cam 38 is ensured by the hinge unit 10 itself, and the fluctuations in the rotational direction are absorbed, the slide cam of the hinge unit in the main body or the lid as in the prior art Since it is not necessary to mount so as to be slidably movable in the direction, it is not necessary to consider fluctuation due to manufacturing error.

In addition, since the mechanical values such as the rotational torque required for the relative rotation of the slide cam 38 and the fixed cam 28 are determined by the hinge unit 10 itself, the dimensions of the main body 14 and the lid 20 are determined. There is little dispersion of rotational torque due to errors.

Here, the cylindrical case 45 is molded from a material having a large coefficient of friction. Therefore, since the slide cam 38 receives resistance when sliding the inside of the cylindrical case 45 in the axial direction, the lid 20 slowly rotates around the shaft 34 to give a sense of quality.

On the other hand, one end of the compression coil spring 36 abuts against the flange portion 40 formed on one end side of the shaft 34, and the other end of the compression coil spring 36 abuts the slide cam 38. The slide cam 38 is held toward the fixed cam 28 side. Moreover, the substantially elliptical stopper 44 is being fixed to the other end side of the shaft 34, and the fixing cam 28 is prevented from coming out of the shaft 34 by this.

Subsequently, the operation of the slide cam 38 and the fixed cam 28 will be described.

The slide cam 38 is provided with a cam face 33 which can be engaged with the cam face 32 of the fixed cam 28. In the state where the lid 20 is closed, as shown in FIG. The top part 33A of the cam face 33 of 38 and the valley part 32B of the cam face 32 of the fixed cam 28 do not mesh, and the cam faces 32 and 33 are in front of each other. Not overhanging

That is, the slide cam 38 carried by the compression coil spring 36 slides by the propulsion force received from the compression coil spring 36 being converted into the rotational force which tries to rotate in the arrow F direction about the shaft 34. The cover 20 is pressed to the main body 14 side through the cylindrical case 45 which accommodated the cam 38. As shown in FIG. Therefore, the cover 20 can cover the main body 14 without being shaken, and the cover 20 is not opened even when the mobile phone 12 is turned upside down.

Moreover, as shown in FIG. 7, when the cover 20 is opened while resisting the holding force of the compression coil spring 36 in the arrow M direction, the function of the top part 33A and the cam surface 32 of the cam surface 33 will be carried out. By this, the slide cam 38 is pushed back by the fixed cam 28 to the inside of the cylindrical case 45. In this state, the lid 20 is stopped.

Then, the lid 20 is opened to a position where the top portion 33A of the cam surface 33 of the slide cam 38 and the edge portion 32A of the cam surface 32 of the fixed cam 28 come into contact with each other (this embodiment). In the form, the opening angle of the lid 20 in this state is set at θ = 150 °) and a feeling of click is obtained, and as shown in FIG. 8, the top portion 33A of the cam surface 33 is By sliding in toward the valley part 32B of the cam surface 32, the lid | cover 20 naturally opens in M direction (opening angle (theta) = 160 degrees).

In other words, by the function of the cam face 32 and the cam face 33, the moving force in the axial direction of the slide cam 38 pressed by the holding force of the compression coil spring 36 is applied to the slide cam 38. It is converted to rotational force (arrow Q direction).

Even when the cover 20 is further opened in the open state of the cover 20, the stopper 15 protruding from the shaft portion 22 is in contact with the receiving sheet 16A of the support 16, so that the cover ( 20) rotation is regulated.

In this state, the top portion 33A of the cam surface 33 of the slide cam 38 and the valley portion 32B of the cam surface 32 of the fixed cam 28 are not engaged with each other. 32,33) do not touch each other over the entire surface.

Therefore, since the slide cam 38 carried by the compression coil spring 36 tries to rotate in the M direction together with the cylindrical case 45, the stopper 15 of the lid 20 through the cylindrical case 45. ) Abuts on the receiving sheet 16A of the support 16. Therefore, even when the cover 20 is fully open, it is possible to maintain the fully open state without swinging.

As described above, in the present embodiment, the hinge units 10 can be compactly designed by providing the cam faces 32 and 33 on the contact surfaces of the slide cam 38 and the fixed cam 28, respectively. In addition, since the fluctuations in the rotational direction are not absorbed by arranging bosses having different phases as in the related art, the same hinge unit 10 can be used for the left and right shaft portions 22. In addition, since it is not necessary to change the phase of the boss as in the prior art, the parts can be shared. Moreover, since the hinge unit 10 can be formed with the same metal mold | die, manufacturing cost can be reduced.

In addition, although the engaging concave part 51 is formed in the slide cam 38, and the engaging convex part 49 which can be engaged with the said engaging concave part 51 was formed in the cylindrical case 45, it is a slide. Since the cam 38 and the cylindrical case 45 only need to be able to be slidably movable in the axial direction, the unevenness may be reversed.

In addition, although the groove part 47 is formed in the cylindrical case 45, and the projection 48 which can be engaged with the said groove part 47 was formed in the fixing part 46, the cylindrical case 45 was fixed to the fixed part ( As long as it can be fixed to 46), irregularities may be formed reversely.

In addition, although the hinge unit 10 was formed in the left and right sides of the main body 14 and the cover 20 in this embodiment, it is not necessary to necessarily provide a plurality of hinge units 10, and the main body 14 and the cover 20 of the Depending on the shape, even if the hinge unit 10 is one, it can have a rotation function in a sufficiently free state.

In addition, by configuring the hinge unit 10 temporarily assembled, the load test and the durability test for the hinge unit 10 can be performed.

In addition, in this embodiment, although the cylindrical case 45 was arrange | positioned at the lid | cover 20 and the fixing cam 28 was arrange | positioned at the main body 14, you may arrange | position in reverse. In addition, when thinking not as the hinge unit 10 which considered the simplicity of assembly, but as a simple hinge structure, one side of the shaft part 22 is axially supported by the shaft member, and the cylindrical case 45 is provided on the other side of the shaft part 22. And the fixed cam 28 may be provided with a holding force by the compression coil spring 36.

In addition, the opening angle of the cover 20 can be adjusted by changing the shape of the cam surface 32. In addition, although the mobile telephone 12 which made the cover 20 rotateable with respect to the main body 14 was demonstrated, since the product using the hinge unit 10 may be sufficient, the effect similar to this invention also has a folding mobile telephone. Obtained.

In addition, the present invention can be used not only for a mobile phone but also for an opening angle set such as a cover of an AV device.

Since the present invention has the above-described configuration, it is not necessary to consider the fluctuation that occurs between the mounting portion and the slide cam when the conventional hinge unit without the cylindrical casing is attached to the main body and the cover, so that the main body and the cover hinge It is not necessary to consider the manufacturing errors of the attachment portion of the unit and the hinge unit respectively.

Moreover, attachment is simpler than the conventional hinge structure which makes the problem of the fluctuation which arises between a main body, a cover, and a hinge unit. Moreover, since mechanical values, such as the rotational torque required for relative rotation of a slide cam and a fixed cam, are determined by the hinge unit itself, dispersion | distribution by the dimension error of the 1st casing which is a main body, and the 2nd casing which is a cover is few.

Moreover, since the same hinge unit can be used for a plurality of shaft portions, the parts can be shared. Moreover, since a hinge unit can be shape | molded with the same metal mold | die, manufacturing cost can be reduced.

In addition, since the cylindrical case is fixed to the lid by simply engaging the engagement portion with the engagement portion, attachment is easy.

In addition, since the hinge unit is not loaded with a predetermined load or more, there is no fear of damage.

Claims (6)

A cylindrical slide cam fitted to the shaft so as to be slidably movable in the axial direction; A fixed cam fitted to the shaft to rotate relative to the slide cam; Gripping means for gripping the slide cam toward the fixed cam side; A cam face configured to be brought into contact with the fixed cam and the slide cam in contact with each other according to the relative rotation angles of the fixed cam and the slide cam to take a contact form from a front contact to a partial contact; An engaging portion is formed on the outer circumferential surface of the slide cam along the axial direction, and an engaging portion that can be engaged with the engaging portion of the slide cam is formed on the inner circumferential surface and swings in the rotational direction of the slide cam while the slide cam is accommodated. The hinge unit, characterized in that the tubular case for absorbing the water is installed inside the shaft portion of the cover. delete delete delete The method according to claim 1, The engaging portion is formed along the axial direction on the outer circumferential surface of the cylindrical case, The hinge structure, characterized in that the engaging portion that can be engaged with the engaging portion of the cylindrical case is formed in the cover. The method according to claim 1 to 5, The hinge structure is characterized in that the cover is provided with a stopper that contacts the main body and restricts rotation when the cover is rotated by a predetermined angle.