WO2011132916A2

WO2011132916A2 - Opening and closing device for hinge

Info

Publication number: WO2011132916A2
Application number: PCT/KR2011/002798
Authority: WO
Inventors: 이장우
Original assignee: 주식회사 하이텍파츠
Priority date: 2010-04-20
Filing date: 2011-04-19
Publication date: 2011-10-27
Also published as: KR101008847B1; WO2011132916A3

Abstract

Disclosed is an opening and closing device for a hinge, which is capable of automatically opening and manually closing a product having a foldable body. The present invention includes a fixed housing to be fixed to a first body and a movable housing to be fixed to a second body. The movable housing is disposed on the same axial line with the fixed housing and relatively rotatable with respect to the fixed housing. The fixed housing is coupled with a fixed cam having a cam surface formed at one end thereof. In addition, an opening and closing device for electronic equipment according to the present invention further includes a slide cam, a slide cam supporting member, a releasing member, a compression torsion spring, a movable cam, and a movable cam pressing spring. The present invention enables the straight-motion restoring operation of the slide cam and the rotation-motion restoring operation of the cam supporting member by the compression torsion spring having a simple structure.

Description

Hinge switch

The present invention relates to a hinge opening and closing device. More particularly, the present invention relates to a hinge opening and closing device that can automatically open and close a product having a folding body such as a mobile phone, a notebook computer, an electronic dictionary, and the like.

Electronic devices such as mobile phones, notebook computers, electronic dictionaries, etc. are popularly configured by folding a pair of bodies by hinge coupling. Electronic devices such as mobile phones having such a configuration are commonly referred to as electronic devices having a clamshell body. For example, a conventional folder type mobile phone is composed of a first body provided with a keypad and a second body provided with a display, and the second body is pivotally connected to the first body using a hinge device. . When not using the mobile phone, the second body overlaps the first body to close the mobile phone, and when using the mobile phone, the first body is held by one hand and the second body is rotated by the other hand to open the mobile phone.

In the case of using a conventional cellular phone of the folder type, it is inconvenient to use the mobile phone while working with the other hand because it is necessary to hold the first body of the mobile phone with one hand and rotate the second body with the other hand. In this case, while holding the first body of the mobile phone with one hand and opening the mobile phone by rotating the second body with a finger, the mobile phone is often dropped from the hand and the mobile phone may be damaged. In addition, the elderly or disabled people with one hand is inconvenient to use a mobile phone. In addition to electronic devices such as mobile phones, containers such as cosmetic cases (particularly compact cases) are frequently used to open and close using a hinge. Even when the cover of the compact case is opened, it is inconvenient to use as in the case of a folding type mobile phone because it is designed to hold the body containing the contents with one hand and rotate the cover with the other hand.

In order to improve the problem of using two hands when using a conventional mobile phone of the pole type, an opening and closing device for opening a mobile phone has been developed by holding a mobile phone with one hand and pressing a button installed on the hinge device with a thumb or index finger. Korean Patent No. 875,014 discloses such a switchgear.

Referring to FIG. 16, the opening and closing device disclosed in Korean Patent No. 875,014 is provided with a fixed body and a movable body A rotatably disposed in an opening direction and a closing direction with respect to the fixed body, and having a movable cam a. And an auxiliary part, an inverting part, and an operating body. The detail portion includes a spring for exerting a force on the movable cam in the direction of the fixed body, a fixed cam f elastically opposed to the movable cam a, and a support cam f 'provided on the side opposite to the fixed cam. With the slide body F, a force is applied to the movable body A in the open direction in the open state, and a force is applied to the movable body A in the closed direction in the closed state. The inverting portion is movable when the release body C is provided with a release cam c that elastically contacts the support cam f ', and is fixed to the fixed body and the movable cam a is disengaged from the fixed cam f. It has the inverting body B provided with the inverting cam b which elastically contacts the cam a, and invert | closes, it reverses to the opening direction from the direction which closes the direction in which a biasing part applies a force to a movable body. The operating body D is pressed in the closed state to operate the inverting unit.

Problems of the hinge opening and closing device disclosed in the patent are as follows. First, when the button is automatically opened by pressing the button in the open state, the rotation speed of the rotating second body is too fast to impact the hand holding the electronic device. Therefore, when using the switchgear, the sense of stability is lowered, there is a risk of being damaged when the electronic device is lost in the hand due to the impact of the opening. The high rotational speed of the second body provides a force to adjust the rotational speed of the second body by temporarily removing the fixed cam of the slide body (F) which was preventing the opening of the second body by the movement of the slide body. Because you can not. Moreover, the quick rotation speed of a 2nd body is a result which arises from the structure in which the inverted body B of small diameter was inserted and installed in the inside of the slide body F of large diameter. That is, the cam surface of the movable cam (a) is moved along the cam surface of the inverted cam (b) with a small diameter when opening automatically, so that when the length of the same axial direction is moved along the cam surface with respect to the same rotation angle, Since the length of the circumference of the inverting cam (b) formed in the small inverting body (B) is short, the inclination angle of the cam surface of the inverting cam (b) must be increased, so that the rotation speed is increased.

Second, when the second body is to be manually closed in the open state, the movable cam a of the movable body is moved along the fixed cam f of the slide body. In addition, the fixed cam f of the slide body moves along the movable cam a even when manually opened. In this case, if you incline the incline so as not to require much force when manually opening the second body of the fixed cam (f), the inclination becomes steep when closing manually and requires a lot of force. If you do not need to smooth the slope there is a problem that you must apply more force than when opening manually. That is, since the inclination angle of the movable cam is configured to be not properly adjusted when manually opening and closing manually. In particular, the fixed cam (f) and the reversing cam (b) requires a flat portion (g) for the return by the return spring (e) of the release body (C) when automatically opened. Therefore, there is a problem that the inclination angle of the cam surface of the fixed cam (f) and the reversing cam (b) is increased. As a result, a large force is applied to the cam when opening and closing, and deformation or wear of the cam is likely to occur.

The present invention is to solve the problems of the conventional electronic device switching device as described above. An object of the present invention is to provide a hinge opening and closing device that can open and close at a moderate speed when opening the second body to reduce the impact on the hand and improve the feeling of operation. In addition, another object of the present invention is to provide a hinge opening and closing device that can be operated with a small force when the open cover is manually opened and closed to improve the feeling of operation and reduce the deformation or wear of the cam.

The hinge opening and closing device according to the present invention includes a fixed housing for being fixed to the first body and a movable housing for being fixed to the second body. The movable housing is arranged on the same axis as the fixed housing and is arranged to be relatively rotatable with respect to the fixed housing. The fixed housing has a fixed cam having a cam surface formed at one end thereof. In addition, the electronic device opening and closing device according to the present invention further comprises a slide cam, a slide cam support member, a release member, a compression torsion spring, a movable cam, a movable cam pressure spring.

The slide cam is disposed in the fixed cam so as to be linearly movable in the axial direction of the fixed housing, and a cam surface is formed at one end of the slide cam. The other end of the slide cam is supported by the slide cam support member. The slide cam support member is provided with a pressurized part and is rotatably arranged inside the fixed housing. The slide cam support member is arranged to be rotatable such that the slide cam support member is switched from the support position to the release position when the pressurized portion is pressed. The support position is a position for supporting the slide cam so as not to move in the fixed housing direction from the fixed cam, and the release position is a position for allowing the slide cam to move in the fixed housing direction. The release member presses the pressurized portion of the slide cam support member to rotate the slide cam support member from the support position to the release position. The compression torsion spring is disposed between the slide cam and the slide cam support member, and applies the elastic force in a direction away from the slide cam support member, and at the same time the elastic cam is applied in the direction to return the slide cam support member to the support position by rotation. It is installed to The movable cam is disposed inside the movable housing and is constrained to be able to slide in the axial direction of the fixed housing. The movable cam has a first cam surface formed to contact the cam surface of the fixed cam and a second cam surface formed to contact the cam surface of the slide cam. The movable cam pressurizing spring is disposed inside the movable housing and is installed to apply an elastic force to the movable cam in the fixed housing direction.

Electronic device opening and closing device according to the present invention having the configuration as described above, the cam surface of the slide cam in the closed state by applying a force in the closing direction in contact with the second cam surface of the movable cam to constrain the rotation of the movable cam, fixed in the open state The cam surface of the cam is in contact with the first cam surface of the movable cam, and a force is applied in the opening direction to restrain the rotation of the movable cam.

In addition, the electronic device opening and closing device according to the present invention, if you want to open automatically by pressing the button, that is, the cam surface of the fixed cam when the slide cam support member is rotated by the release member is switched to the release position, The elastic force of the movable cam pressing spring which acts in the opening direction in contact with the first cam surface of the movable cam is greater than the elastic force of the compression torsion spring which causes the cam surface of the slide cam to act in the closing direction in contact with the second cam surface of the movable cam. It is preferable to allow the cam to rotate in the open direction.

The hinge opening and closing device according to the present invention is configured to pressurize the slide cam by the compression torsion spring even when the slide cam is in the released position, thereby compressing the elastic force of the movable cam pressing spring that acts in the opening direction. It can be adjusted by the elastic force of the torsion spring has the advantage of adjusting the rotational speed of opening the second body. In addition, since the first cam surface of the movable cam having a large radius and the cam surface of the fixed cam are opened in contact with each other, the length of the cam surface is increased, so that the inclination angle can be reduced, so that the rotational force for rotating the movable cam can be weakened to adjust the speed. There is an advantage. Therefore, it is possible to prevent the opening and closing device to open suddenly to improve the feeling of operation and to reduce the risk of missing the electronic device in the hand by the impact at the time of opening.

The electronic device opening and closing apparatus according to the present invention forms a mildly inclined surface on the first cam surface of the movable cam, and the mildly inclined surface of the first cam surface and the mildly inclined surface that is inclined in the same direction as that of the first cam surface. It is possible to form a steep slope inclined in a direction opposite to the plane. In addition, the cam surface of the slide cam can be provided with a gentle slope in contact with the steep slope of the second cam surface in the closed state, and a steep slope in contact with the gentle slope of the second cam surface when the movable cam rotates in the open direction. In particular, the first cam surface and the second cam surface of the movable cam in contact with the cam surface of the corresponding slide cam or the fixed cam alternately in contact with the cam surface of the movable cam when manually opening or closing the second body, It is preferable that the mildly inclined surfaces of the second cam surface have different inclinations. That is, when the movable cam is rotated while the slide cam is supported at the support position, the first rotation section in contact with the cam surface and the second cam surface of the slide cam and the second rotation section in contact with the cam surface and the first cam surface of the fixed cam are in contact with each other. It can be provided.

As described above, when the first cam surface and the second cam surface of the movable cam are alternately cam-moved when manually opened or closed, the length of the cam surface can be lengthened as a whole and the inclination angle of the cam surface can be reduced. Therefore, the force applied to the cam surface for rotation is small, can be opened and closed with a small force, there is an advantage that can prevent deformation or wear of the cam.

In addition, the hinge opening and closing device according to the present invention forms a support portion at the other end of the slide cam, the slide cam support member to support the slide cam in contact with the support so that the slide cam is not pushed into the slide cam support member at the support position The support end may be formed.

In addition, the hinge opening and closing device according to the present invention, the stopper portion is formed in the slide cam support member, the slide cam support member in contact with the stopper portion when the slide cam support member rotates by the elastic force of the compression torsion spring on the other end of the fixed cam It is preferable to form a fixing projection for stopping at the support position.

In addition, the hinge opening and closing device according to the present invention may further include a release member return spring for applying an elastic force in the direction away from the slide cam support member.

In addition, the hinge opening and closing device according to the present invention may further include a shaft for rotatably connecting the fixed housing and the movable housing.

In addition, the hinge opening and closing device according to the present invention, on one of the inner surface of the movable housing and the outer surface of the movable cam to form a slide groove for guiding the linear movement of the movable cam, the other guide guide is inserted into the slide groove May be formed.

The hinge opening and closing device according to the present invention is capable of operating the linear motion return operation of the slide cam and the rotational motion return operation of the cam support member with a simple compression torsion spring. Furthermore, when the electronic device is automatically opened by pressing a button, the elastic force of the movable cam pressing spring is adjusted to the elastic force of the compression torsion spring, preventing the second body from being opened rapidly, improving the feeling of operation and the impact at the time of opening. This can reduce the risk of missing electronic devices from your hands.

In addition, the hinge opening and closing device according to the present invention is such that when the cam surface of the fixed cam is automatically moved with the first cam surface having a large diameter of the movable cam when it is automatically opened, the length of the cam surface which is slower than the conventional opening and closing device is longer. The angle of inclination can be reduced, and the sudden rotation of the second body can be prevented, thereby improving the stability of the operation and improving the reliability.

In the hinge opening and closing device according to the present invention, when the door is manually opened and closed, the cam surface of the fixed cam and the first cam surface of the movable cam and the cam surface of the slide cam and the second cam surface of the movable cam are alternately contacted to operate. The length of the cam in contact with the rotation angle can be lengthened, so that the inclination of the cam surface can be made relatively small. Therefore, the force acting in the rotational direction on the cam surface is small, which can prevent deformation and wear of the cam.

1 is a perspective view of one embodiment of a hinge opening and closing device according to the present invention.

FIG. 2 is an exploded perspective view of one embodiment shown in FIG. 1.

3 is an exploded perspective view showing a part of the temporary example shown in FIG.

Figure 4 is a perspective view of the slide cam in two directions in the embodiment shown in FIG.

5 is a perspective view of the cam support member viewed from two directions in the embodiment shown in FIG. 1;

6 is a perspective view of the fixed cam in two directions in the embodiment shown in FIG. 1;

7 is a perspective view showing the movable housing in the embodiment shown in FIG.

8 is a perspective view of the movable cam in two directions in the embodiment shown in FIG. 1;

9 is a partial cross-sectional view and a perspective view of a main part of a hinge opening and closing device coupled to the first body and the second body of the embodiment shown in FIG. 1 in a closed state.

Figures 10a to 10e is a simplified view of the main portion to explain the action of opening and closing the hinge opening and closing device according to the present invention (in reverse order when closing) in a plan view.

11 and 12 are partial cross-sectional views showing main parts for explaining the action when opened in the closed state of the embodiment shown in FIG.

FIG. 13 is a partial cross-sectional view and a perspective view of a main body of the switchgear in an open state, in which the switchgear of the embodiment shown in FIG. 1 is coupled to the first body and the second body.

FIG. 14 is a view showing a state in which the cam support member is switched to the release position by operating the release member in the embodiment shown in FIG. 1.

15A to 15E are simplified views of main parts to be unfolded on a plane to explain an operation of automatically opening and closing a hinge opening and closing device according to the present invention.

16 is a view schematically showing the operation of the conventional opening and closing device.

Hereinafter, with reference to the accompanying drawings, it will be described in detail an embodiment of the hinge opening and closing device according to the present invention.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. These terms should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention based on the contents throughout the specification.

1 and 2, the hinge opening and closing device 100 of an embodiment of the present invention, the fixed housing 10, the release member 20, the slide cam 40, the slide cam support member 50, The fixed cam 60, the movable housing 70, the shaft 75 penetrating the fixed housing 10 and the movable housing 70, the movable cam 80 and the plurality of

elastic members

30, 31, 32 (33). The hinge opening and closing device 100 is coupled to a foldable electronic device having two bodies to allow the two bodies to rotate relative to each other. The fixed housing 10 is fixed to either one of the two bodies, and the movable housing 70 is fixed to the other.

As shown in Figures 1 to 3, the fixed housing 10 is formed to open in one direction. The fixed housing 10 has a through hole 11 through which the shaft 75 penetrates, and a pair of insertion holes 12 provided at both sides of the through hole 11. A pair of protrusions 13 and a plurality of fixing grooves 14 are provided on the outer surface of the fixed housing 10.

As shown in Figures 2 and 3, the release member 20 is coupled to the reciprocating linear movement relative to the fixed housing (10). The release member 20 is provided with a pair of pressure protrusions 21. Each pressurizing protrusion 21 is formed with an inclined surface 211 inclined with respect to the moving direction of the release member 20. When the release member 20 is pressed toward the fixed housing 10, each of the pressure protrusions 21 may be inserted into the insertion hole 12 of the fixed housing 10. The release member 20 is combined with the operation button 90 and moves together with the operation button 90.

The release member 20 is elastically biased in a direction away from the stand of the fixed housing 10 by the release member return spring 30. And the fixing cover 25 is coupled to the fixed housing 10 in order to prevent the release member 20 from being separated from the fixed housing 10. The fixing cover 25 has a pair of coupling grooves 251 that are fitted to each of the protrusions 13 of the fixing housing 10. The release member 20 and the operation button 90 are coupled with the fixed cover 25 therebetween. A through hole 252 is provided in the center of the fixing cover 25 for coupling the release member 20 and the operation button 90.

As shown in Figures 2 and 4, the slide cam 40 is coupled to the fixed cam 60 in the axial direction of the fixed housing 10 so as to be movable, the fixed housing through the fixed cam (60) 10). On the outer surface of the slide cam 40, a pair of guide protrusions 41 are provided along the moving direction of the slide cam 40. At the end of each guide protrusion 41 is provided a support portion 42 in contact with the slide cam support member 50 to be described later. A through hole 43 through which the shaft 75 penetrates is provided at the center of the slide cam 40, and a coupling groove 44 for coupling the compression torsion spring 31 is formed around the through hole 43. .

In addition, a pair of cam faces 45 are provided at one end of the slide cam 40 at opposite positions in the circumferential direction. Each cam surface 45 is provided with a steep inclined portion 452 with a steep inclination around the curved portion 451 and a mild inclined portion 443 with a gentle inclination. Each cam surface 45 of the slide cam 40 moves along the second cam surface 83 of the movable cam 80 to be described later.

The slide cam support member 50 is a member that is switched to a support position that prevents the slide cam 40 from moving in the fixed housing 10 direction and a support release position that allows movement in the fixed housing direction by rotation. As shown in Figures 2 and 5, the slide cam support member 50 is a cylindrical shape, one end is open, rotatably coupled to the inside of the fixed housing (10). A through hole 51 through which the shaft 75 penetrates is provided at the center of the slide cam support member 50, and a pair of insertion grooves 52 are formed at the outer circumference of the through hole 51 to form the through hole 51. It is arranged to face each other. The insertion groove 52 is a portion into which the pressure protrusion 21 of the release member 20 is inserted, and the pressing portion 53 in contact with the inclined surface 211 of the pressure protrusion 21 at one end of each insertion groove 52. ) Is provided. When the pressure protrusion 21 is inserted into the insertion groove 52, the inclined surface 211 of the pressure protrusion 21 contacts the pressure portion 53 and presses the pressure portion 53 in the circumferential direction, thereby sliding. Cam support member 50 is rotated by a certain angle.

In addition, a pair of stoppers 54 are disposed to face each other at the open side end of the slide cam support member 50. At the end of the stopper 54, a support end 541 corresponding to the support 42 of the slide cam 40 is provided. In a state where the support part 42 of the slide cam 40 and the support end 541 of the slide cam support member 50 are in contact with each other, the slide cam 40 is prevented from moving in the axial direction of the fixed housing 10. However, when the slide cam support member 50 rotates so that the support end 541 deviates from the support 42, the slide cam 40 is allowed to move in the axial direction of the fixed housing 10. As described above, the slide cam support member 50 supports the slide cam 40 in contact with the support 42 by the support end 541 in contact with the linear movement of the release member 20. The support 42 may be shifted to a release position that does not support the slide cam 40. In the support position, the support end portion 541 is in contact with the support portion 42 of the slide cam 40 so that the slide cam 40 is not pushed out of the fixed cam 60. On the other hand, in the release position, the support end portion 541 may be released from the support portion 42 and the slide cam 40 may be pushed into the slide cam support member 50. When the slide cam support member 50 is in the release position, the slide cam 40 moves by a predetermined distance in the direction toward the fixed housing 10 by the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33. do.

As shown in FIGS. 2 and 9, the compression torsion spring 31 is disposed between the slide cam 40 and the slide cam support member 50. One end of the compression torsion spring 31 is inserted into the slide cam support member 50 to be fixed to the side of the stopper portion 54, and the other end of the compression torsion spring 31 is a coupling groove of the slide cam 40 ( 44) is inserted and fixed. The other end of the compression torsion spring 31 is bent at its end, and the bent portion is fixed to the slide cam 40 by being inserted into a locking groove (not shown; see FIG. 14) connected to the coupling groove 44. The compression torsion spring 31 elastically biases the slide cam 40 in a direction away from the slide cam support member 50. In addition, the compression torsion spring 31 is twisted in the circumferential direction when the slide cam support member 50 is rotated by the movement of the release member 20 to switch from the support position to the release position to store the elastic energy. do. Therefore, when the release member 20 is restored to its original position, the slide cam support member 50 is rotated to its original support position while being elastically restored by the elastic energy stored in the compression torsion spring 31.

As shown in Figures 2 and 6, the fixed cam 60 is made of a hollow cylindrical shape and is coupled to the fixed housing (10). On the outer circumferential surface of the fixed cam 60, a plurality of engaging projections 61 are arranged at equal intervals. These coupling protrusions 61 are inserted into the fixing grooves 13 of the fixing housing 10 so that the fixing cam 60 is fixed to the fixing housing 10. On the inner circumferential surface of the fixed cam 60, a pair of guide grooves 62 are provided to extend in the direction of movement of the slide cam 40. When the slide cam 40 is coupled with the fixed cam 60, the guide protrusion 41 of the slide cam 40 is inserted into the guide groove 62 of the fixed cam 60, the slide cam 40 is moved When the guide protrusion 41 is moved along the guide groove 62.

One end of the fixing cam 60 is provided with a pair of fixing protrusions 63. These fixing protrusions 63 are inserted into the slide cam support member 50 and contact the stopper portion 54 of the slide cam support member 50 to limit the rotation of the slide cam support member 50. That is, when the slide cam support member 50 is switched from the release position to the support position by receiving the torsion force of the compression torsion spring 31, the stopper portion 54 side of the slide cam support member 50 is fixed on the cam. By contacting the fixing projection 63 of 60, the slide cam support member 50 is stopped at the support position.

In addition, a pair of cam faces 64 are provided at the other end of the fixed cam 60. Each cam surface 64 has a curved portion 641 and a steeply steep inclined portion 642 disposed on both sides of the curved portion 641 and a gentle inclined portion 643 having a gentle inclination. The cam surface 64 of the fixed cam 60 moves in contact with the first cam surface 82 of the movable cam 80 to be described later.

As shown in Figures 2 and 7, the movable housing 70 is formed in a cylindrical cylinder shape of one end is open, it is rotatably coupled to the fixed housing 10 through the shaft (75). On the inner circumferential surface of the movable housing 70, a pair of guide grooves 71 are formed to extend in the longitudinal direction of the movable housing 70. The other end of the movable housing 70 is provided with a through hole 72 through which the shaft 75 penetrates.

One end of the shaft 75 protrudes toward the release member 20 through the fixed housing 10, and the other end of the shaft 75 protrudes out of the movable housing 70 through the movable housing 70. E-ring 76 is coupled to the other end of the shaft 75, whereby the other end of the shaft 75 can maintain the state coupled to the movable housing (70). The shaft 75 includes a release member return spring 30, a fixed housing 10, a compression torsion spring 31, a slide cam support member 50, a slide cam 40, a movable cam 80, and a movable cam pressure spring. 31 passes through the auxiliary spring 33 and the movable housing 70.

As shown in FIG. 2 and FIG. 8, the movable cam 80 is coupled to the movable housing 70 so as to be linearly movable in the longitudinal direction of the movable housing 70. The movable cam 80 has a pair of guide protrusions 81, a first cam surface 82, a second cam surface 83, and a through hole 84 through which the shaft 75 penetrates. The pair of guide protrusions 81 are provided on the outer circumferential surface of the movable cam 80 to be slidably inserted into the pair of slide grooves 71 of the movable housing 70, respectively. Since the guide protrusion 81 of the movable cam 80 is inserted into the slide groove 71 of the movable housing 70, the movable cam 80 and the movable housing 70 rotate about the shaft 75 as one body. Done.

In the present invention, the coupling structure of the movable cam 80 and the movable housing 70 may be variously changed. For example, the guide protrusion 81 may be provided on the inner surface of the movable housing 70 and the slide groove 71 may be provided on the outer surface of the movable cam 80. The number of guide protrusions 81 and the slide grooves 71 may be changed to various numbers in addition to two.

The first cam surface 82 and the second cam surface 83 are provided at one end of the movable cam 80 in pairs. The first cam surface 82 is disposed on the outer side so as to be in contact with the cam surface 64 of the fixed cam 60 to cam movement, the second cam surface 83 is in contact with the cam surface 45 of the slide cam 40 It is disposed relatively inward to allow cam movement. The pair of first cam surfaces 82 are disposed at positions oriented in the circumferential direction 180 degrees, and the pair of second cam surfaces 82 are also disposed at positions oriented in the circumferential direction 180 degrees. The first cam surface 82 has a steep steep inclined portion 822 disposed on both sides of the curved portion 821 and the curved portion 821 and a gentle inclined portion 823 having a gentle inclination. The second cam surface 83 has a steep steep inclined portion 832 disposed on both sides of the curved portion 831 and the curved portion 831 and a gentle slope portion 833 having a gentle inclination. In the present embodiment, the mildly inclined portion 823 of the first cam surface 82 and the mildly inclined portion 833 of the second cam surface 83 are formed to have different inclinations.

As shown in FIG. 2, the movable cam pressure spring 32 and the auxiliary spring 33 are disposed inside the movable housing 70 to elastically bias the movable cam 80 in the direction of the fixed cam 60. The first cam surface 82 and the second cam surface 83 of the movable cam 80 are moved to the cam surface 64 and the slide cam of the fixed cam 60 by the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33. Each of the cam surfaces 43 is in contact with the cam surface 43. The force of the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33 is greater than the elastic force of the compression torsion spring 31. Therefore, when the slide cam support member 50 is in the release position, the slide cam 40 slides while compressing the compression torsion spring 31 by the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33. It is pushed into the cam support member 50. In association with the movement of the slide cam 40 in the fixed housing 10 direction, the movable cam 80 is moved in the fixed housing direction while rotating. As the movable cam 80 constrained to linearly move inside the movable housing 70 rotates linearly, the movable housing 70 moves relative to the fixed housing 10. Here, the auxiliary spring 33 can be omitted if the movable cam pressure spring 32 has a sufficient elastic force.

Hereinafter, the operation of the hinge opening and closing device 100 according to one embodiment of the present invention will be described with reference to FIGS.

Figure 9 shows when the mobile phone is in a closed state, (a) is a front sectional view showing the main part of the switchgear, (b) is a side sectional view showing the main part of the switchgear, (c) is a partial configuration of the switchgear Is a perspective view showing (d) shows the opening and closing state of the mobile phone. In addition, FIG. 13 shows when the mobile phone is in an open state, and (a), (b), (c) and (d) show the main parts of the switchgear and the open / closed state of the mobile phone as in FIG. 9. 10A to 10E and 15A to 15E are simply expanded main parts of the opening and closing device on the plane for convenience of description.

As shown in FIG. 9, the folding cellular phone includes a first body 1 having a keypad (not shown) and a second body 2 having a display unit (not shown). (1) and the second body (2) is coupled to each other foldable by the opening and closing device (100). The fixed housing 10 of the opening and closing device 100 is fixed to the first body 1, and the movable housing 70 is fixed to the second body 2.

As shown in Fig. 9, when the mobile phone is in the closed state, the slide cam support member 50 is located in the support position. At this time, as shown in Figure 10a, since the support 42 of the slide cam 40 is in contact with the support end 541 of the slide cam support member 50, the movable cam pressure spring 32 and the auxiliary spring 33 Even if the elastic force of) acts on the slide cam 40 is not pushed into the slide cam support member (50). And as shown in (b), (c) and 10a of Figure 9, the first cam surface 82 and the second cam surface 83 of the movable cam 80 is the cam surface 64 of the fixed cam 60 And the cam surface 45 of the slide cam 40, respectively. Specifically, the mildly inclined portion 823 of the first cam surface 82 is in contact with the mildly inclined portion 643 of the fixed cam 60, and the steeply inclined portion 832 of the second cam surface 83 is of the slide cam 40. In contact with the mild inclined portion 453.

As such, between the cam surface 64 of the first cam surface 82 and the fixed cam 60 and the second cam surface 83 due to the elastic force of the movable cam pressing spring 32 and the auxiliary spring 33 in the state where the cam surfaces are in contact with each other. ) And the cam surface 45 of the slide cam 40 acts. In addition, a rotation moment for rotating the movable cam 80 is generated by a force acting between these cam surfaces. The rotation moments are the same in magnitude, but the direction of action is opposite to each other.

That is, as shown in FIG. 10A, the force acting between the first cam surface 82 and the cam surface 64 of the fixed cam 60 generates a rotation moment for moving the movable cam 80 to the left direction, The force acting between the second cam surface 83 and the cam surface 45 of the slide cam 40 generates a rotation moment to move the movable cam 80 in the right direction, so that the movable cam 80 is in any direction. It stops without rotating.

The operation of the opening and closing device when the user manually opens the mobile phone in the closed state will be described with reference to FIGS. 10A to 10E and 11.

When the user rotates the second body 2 in the open direction when the mobile phone is in the closed state as shown in FIG. 10A, the movable cam 80 rotates in the open direction together with the movable housing 70. 10B and 11, the steep slope 832 of the second cam surface 83 moves along the slow slope portion 453 of the slide cam 40 so that the curved portion of the second cam surface 83 may be moved. 831 is in contact with the curved portion 451 of the slide cam (40).

When the movable cam 80 is further moved (rotated) in the opening direction so that the curved portion 831 of the second cam surface 83 deviates from the curved portion 451 of the slide cam 40, as shown in FIGS. 10C and 12. Similarly, the movable cam 80 of the movable cam pressurizing spring 32 and the auxiliary spring 33 is in a state where the light inclined portion 833 of the second cam surface 83 and the steep inclined portion 452 of the slide cam 40 are in contact with each other. The elastic force is further rotated in the opening direction.

After the second cam surface 83 moves to some extent in contact with the cam surface 45 of the slide cam 40, as shown in FIG. 10D, the first cam surface 82 is the cam surface of the fixed cam 60 ( 64). This is because the inclination of the first cam surface 82 and the inclination of the second cam surface 83 are differently formed as described above. The section in which the cam face 64 and the second cam face 83 of the slide cam 40 come into contact with each other is called a first rotation section p, and the cam face 64 and the first cam face 82 of the fixed cam 60 are moved. The section which this contact rotates is called 2nd rotation section q.

Subsequently, the first cam surface 82 moves in contact with the cam surface 64 of the fixed cam 60, and as shown in FIG. 10E, the curved portion 821 of the first cam surface 82 moves to the cam surface 64 of the fixed cam cam 64. If you move to the end of the light inclined portion (643) it will stop. As shown in FIG. 13, when the curved portion 821 of the first cam surface 82 moves to the end of the lightly inclined portion 643 of the fixed cam cam surface 64, the opening direction of the movable cam 80 and the movable housing 70 is opened. After the end of the rotation, the second body 2 is opened. In this open state, the movable cam is located between the first cam surface 82 of the movable cam 80 and the cam surface 64 of the fixed cam 60 and between the second cam surface 83 and the cam surface 45 of the slide cam 40. The force acts in the opening direction by the pressure spring 32 and the auxiliary spring 33.

In order to manually close the second body 2 again, the movable cam 80 must be rotated in the closing direction, and the movable cam 80 is subjected to the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33, The second body 2 is closed only by applying an external force. When the user closes the second body 2 by applying an external force greater than the force of the elastic force of the movable cam pressure spring 32 and the auxiliary spring 33, the movable cam 80 is in the reverse order shown in FIGS. 10A to 10E. Move back to the original position.

On the other hand, when the user opens the mobile phone automatically by pressing the operation button the action of the switchgear as follows.

14 and 15A, when the user presses the operation button 90 in the closed state of the cellular phone, the release member 20 moves toward the slide cam support member 50. At this time, while the pressure projection 21 of the release member 20 is inserted into the insertion groove 52 of the slide cam support member 50, the inclined surface 211 of the pressure protrusion 21 is the blood of the slide cam support member 50. The pressurizing portion 53 is pressurized. When the pressure protrusion 21 presses the slide cam support member 50 in this way, the slide cam support member 50 is rotated while elastically deforming the compression torsion spring 31 as shown in FIG. In the drawing, indicated by an arrow moving in the right direction). When the slide cam support member 50 is rotated to switch to the release position, the support end 541 of the slide cam support member 50 is released from the support 42 of the slide cam 40.

When the support end 541 is out of the support 42, the movable cam pressure spring 32 and the auxiliary compression coil spring 33 are transmitted to the slide cam 40 through the movable cam 80 as shown in FIG. 15B. The slide cam 40 is pushed into the slide cam support member 50 by the elastic force of () (ie, moves toward the fixed housing 10). When the slide cam 40 is pushed, the length of the movable cam pressing spring 32 which presses the movable cam 80 increases, and the rotation which arises between the 2nd cam surface 83 and the cam surface 45 of the slide cam 40 is carried out. The moment of rotation generated between the first cam surface 82 and the cam surface 64 of the fixed cam 60 becomes larger than the moment, so that the first cam surface 82 of the movable cam 80 is the cam surface of the fixed cam 60 ( 64, the movable housing 70 constrained by the movable cam 80 is rotated in the opening direction. Even when the slide cam 40 is in the release position, the compression torsion spring 31 presses the slide cam 40 in the direction of the movable housing 70, so that the movable cam pressing spring 32 acts in the opening direction. The elastic force can be adjusted by the elastic force of the compression torsion spring 31. Therefore, by adjusting the compression elastic force of the compression torsion spring 31 properly, it is possible to adjust the rotational speed at which the second body is opened. Further, the first cam surface 82 of the large movable cam 80 and the cam surface 64 of the fixed cam 60 are opened in contact with each other, so that the length of the cam surface is increased, so that the inclination angle is reduced, and the movable cam 80 is opened. ) Can weaken the rotational force to rotate. Therefore, it is possible to prevent the opening and closing device to open suddenly to improve the feeling of operation and to reduce the risk of missing the electronic device in the hand by the impact at the time of opening.

As shown in FIG. 15C, the first cam surface 82 cams while contacting the cam surface 64 of the fixed cam 60 to provide rotational force to the movable housing 70 constrained by the movable cam 80. As shown in FIG. 15D, the curved portion 821 of the first cam surface 82 stops when moved to the end of the lightly inclined portion 643 of the fixed cam cam surface 64. When the curved portion 821 of the first cam surface 82 moves to the end of the lightly inclined portion 643 of the fixed cam cam surface 64, the rotation of the movable cam 80 and the movable housing 70 in the opening direction is finished and the second body 2 is finished. ) Becomes open. As shown in FIG. 15D, when the second body 2 is opened, the slide cam 40 is pushed away from the slide cam support member 50 by the elastic restoring force of the compression torsion spring 31, As shown in FIG. 15E, the slide cam support member 50 is rotated to a position where the support end portion 541 and the support portion 42 are in contact with each other so that the slide cam 40 and the slide cam support member 50 are released from the unsupported position. It returns to the support position. The open second body 2 should be closed manually, and when the user rotates in the direction of closing the second body 2 by applying an external force greater than the combined force of the elastic forces of the movable cam pressure spring 32 and the auxiliary spring 33. The movable cam 80 moves in the reverse order shown in FIGS. 10A-10E and returns to its original position.

In the opening and closing device 100 according to the present invention, the return operation of the slide cam 40 and the return operation of the slide cam support member 50 are made of one compression torsion spring 31, so that the structure is simple and the manufacturing cost is reduced. It is possible to prevent the rapid opening of the second body 2 and to improve the feeling of operation.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims

A fixed housing 10 to be fixed to the first body,

A movable housing 70 disposed on the same axis as the fixed housing 10 so as to be relatively rotatable with respect to the fixed housing 10, and fixed to the second body;

A fixed cam 60 coupled to the fixed housing 10 and having a cam surface 64 formed at one end thereof;

A slide cam 40 disposed in the fixed cam 60 in a axial direction of the fixed housing 10 and having a cam surface 45 formed at one end thereof;

A support portion 53, and from the support position for supporting the slide cam 40 from moving from the fixed cam 60 in the direction of the fixed housing 10 when the pressure portion 53 is pressurized; A slide cam support member (50) rotatably disposed in the interior of the fixed housing (10) so as to be switched to a release position for allowing movement in the direction of the fixed housing (10);

A release member 20 for pressing the pressurized portion 53 of the slide cam support member 50 to rotate the slide cam support member 50 to the release position;

The slide cam 40 exerts an elastic force in a direction away from the slide cam support member 50 and at the same time, applies a elastic force in a direction to return the slide cam support member 50 to the support position by rotation. Compression torsion spring 31 disposed between the 40 and the slide cam support member 50,

The first cam surface 82 is disposed inside the movable housing 70 and is constrained to be slidable in the axial direction of the fixed housing 10, and is formed to be in contact with the cam surface 64 of the fixed cam 60 at one end thereof. ) And a movable cam (80) having a second cam surface (83) formed to contact the cam surface (45) of the slide cam (40);

A movable cam pressure spring 32 disposed in the movable housing 70 and installed to apply an elastic force to the movable cam 80 in the direction of the fixed housing 10;

In the closed state, the cam surface 45 of the slide cam 40 is in contact with the second cam surface 83 of the movable cam 80 to apply a force in the closing direction to restrain the rotation of the movable cam 80,

In the open state, the cam surface 64 of the fixed cam 60 is in contact with the first cam surface 82 of the movable cam 80 to apply a force in the opening direction to restrain the rotation of the movable cam 80. Hinge switchgear.
The method of claim 1,

When the slide cam support member 50 is rotated by the release member 20 and the slide cam 40 is switched to the release position,

An elastic force of the movable cam pressure spring 32 such that the cam surface 64 of the fixed cam 60 is in contact with the first cam surface 82 of the movable cam 80 in the opening direction is applied to the slide cam 40. The cam surface 45 is larger than the elastic force of the compression torsion spring 31 to act in the closing direction in contact with the second cam surface 83 of the movable cam 80, so that the movable cam 60 rotates in the opening direction. Hinge switchgear.
The method according to claim 1 or 2,

The first cam surface 82 of the movable cam 80 is provided with a light inclined surface 823,

The second cam surface 83 of the movable cam 80 is a light inclined surface 833 inclined in the same direction as the light inclined surface 823 of the first cam surface 82 and a light inclined surface 823 of the first cam surface 82. Equipped with a steep slope 832 inclined in the opposite direction),

When the cam surface 45 of the slide cam 40 is rotated in a direction in which the light inclined surface 453 and the movable cam 80 are in contact with the steep slope 832 of the second cam surface 83 in a closed state. The hinge opening / closing device provided with the steep inclined surface 451 which contact | connects the lightly inclined surface 833 of the 2nd cam surface 83.
The method of claim 3,

The light inclined surface 823 of the first cam surface 82 and the light inclined surface 833 of the second cam surface 83 of the movable cam 80 are formed to have different inclinations,

When the movable cam 80 is rotated while the slide cam 40 is supported at the support position, the first rotation section p in contact with the cam face 64 and the second cam face 83 of the slide cam 40 and And a second rotation section (q) in contact with the cam surface (64) and the first cam surface (82) of the fixed cam (60).
The method of claim 1,

A support part 42 is provided at the other end of the slide cam 40, and the slide cam support member 50 does not push the slide cam 40 into the slide cam support member 50 at the support position. A hinge opening and closing device, characterized in that the support end portion 541 is provided in contact with the support portion 42 to support the slide cam (40).
The method of claim 1,

The slide cam support member 50 is provided with a stopper portion 54,

The other end of the fixed cam 60 is in contact with the stopper portion 54 when the slide cam support member 50 rotates by the elastic force of the compression torsion spring 31 to contact the slide cam support member 50. Hinge opening and closing device characterized in that provided with a fixing projection for stopping at the support position.
The method of claim 1,

And a release member return spring (30) for applying an elastic force to the release member (20) away from the slide cam support member (50).
The method of claim 1,

Hinge opening and closing device further comprises a shaft (75) for rotatably connecting the fixed housing (10) and the movable housing (70).
The method of claim 1,

One of an inner surface of the movable housing 70 and an outer surface of the movable cam 80 is provided with a slide groove for guiding linear movement of the movable cam 80, and the other side is inserted into the slide groove. Hinge opening and closing device characterized in that the guide projection is provided.