JP2001177266A - Small opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small opening/closing device for a portable telephone set, where a movable-side body is automatically opened against a fixed-side body to a prescribed angle by pressing a push button or it can be manually opened. SOLUTION: There are provided a holder 6 fitted to a fixed-side body, a shaft 5 fitted in the axial direction of the holder, a rotary cam member 7 fitted to the movable-side body, a slider 8 fitted to the shaft for sliding but not for rotation, a push button 12 energized for sliding in one direction at one end part of the holder, and a thrust cam mechanism C provided between the rotary cam member and the slider. Depressing of the push button operates the thrust cam mechanism to allow rotation of the rotary cam member, so that the movable-side body is opened away from the fixed-side body. The thrust cam mechanism can be operated manually, to open the movable-side body against the fixed-side body as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small opening / closing device suitable for use in a portable telephone having an opening / closing mechanism.

[0002]

2. Description of the Related Art Conventionally, a transmitting side and a receiving side, or a keyboard side and a display side are separately provided on a fixed side housing and a movable side housing, and each housing is folded and opened and closed. As an opening / closing device for this purpose, a device in which a movable housing is automatically opened to a predetermined angle with respect to a fixed housing by pressing a push button with a push system is known.

[0003]

The above-described conventional push-type opening / closing device has a problem in that the push button must be depressed when opening, and cannot be manually opened.

[0004] It is an object of the present invention to enable the movable housing to be opened to the fixed housing to a predetermined angle automatically by pressing a push button. However, the movable housing can be opened manually without using the push button. In particular, it is an object of the present invention to provide a small opening / closing device suitable for use in a portable telephone.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a holder mounted on a mounting portion of a fixed housing, a shaft mounted in an axial direction of the holder, and a shaft mounted around the shaft. A rotating cam member attached to a mounting portion of the movable housing, which is rotatably biased in one direction in contact with the holder, and is attached to the shaft in contact with the rotating cam member; A slider that is slidably biased in the direction and is slidably mounted in the axial direction and is also non-rotatably and slidably mounted in the axial direction on the mounting portion of the fixed housing; A push button slidably biased in one direction where the push button is attached, and a thrust cam mechanism provided between the rotary cam member and the slider. By operating the thrust cam mechanism to allow the rotation of the rotary cam member and opening the movable housing relative to the fixed housing, the thrust cam mechanism can be manually operated without pressing a push button. The movable housing can be opened relative to the fixed housing.

The present invention is also directed to a holder attached to the attachment portion of the fixed housing, a shaft attached in the axial direction of the holder, and a rotatable attachment around the shaft in contact with the holder. A rotating cam member attached to the mounting portion of the movable housing, and a fixed housing which is slidably biased in one direction in contact with the rotating cam member on the shaft and is slidable in the axial direction. A slider that is also non-rotatably and slidably attached to the mounting portion in the axial direction, a push button slidably biased in one direction that is attached to one end of the holder so as to be able to protrude and retract, and a shaft of the push button. A push rod that is attached in the direction and slidably penetrates through the holder to reach the rotating cam member, and is provided between the push rod and the rotating cam member. A rotary cam mechanism configured to convert the pressing force of the push rod into rotation of the rotary cam member, a rotation urging unit configured to rotationally bias the rotary cam member in one direction according to a rotation angle of the rotation cam member, A thrust cam mechanism provided between the slider and the rotation cam member for controlling the rotation of the rotary cam member, and a release means for releasing the thrust cam mechanism by receiving a force of a sliding push rod when pressing the push button. Features.

According to the present invention, in any of the above cases, the rotation urging means is constituted by a torsion spring, and one end of the torsion spring has an edge portion of the rotation cam member depending on a rotation angle of the rotation cam member. And a locking groove inclined in the direction of rewinding the torsion spring provided on the holder and a locking groove inclined in the direction of rewinding of the torsion spring provided on the edge of the holder. It is characterized by being performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. In FIGS. 1 and 2, reference numeral 1 denotes a portable telephone, for example, and reference numeral 2 denotes a fixed side housing constituting a transmitting side thereof. .
The fixed housing 2 is provided with a transmitting section 2a composed of, for example, a small microphone and a keyboard 2b. Reference numeral 3 denotes a movable housing constituting the receiving side of the portable telephone 1,
For example, a receiving unit 3a composed of a small speaker and a display unit 3b composed of a liquid crystal display are provided. The fixed-side housing 2 and the movable-side housing 3 are alternately combined with comb-shaped mounting portions 2c and 3c protruding from respective ends, and are connected to be openable and closable by an opening and closing device 4.

The structure of the switching device 4 is shown in FIG. 3 to 20, reference numeral 5 denotes a flange 5a at one end.
And a peripheral groove 5 for the E-ring near the other end and the other end.
The holder 6, the rotary cam member 7, and the slider 8 are sequentially attached from the flange 5 a side while inserting the shaft 5 into each of the insertion holes 6 a, 7 a, 8 a provided in the center portion. ing. The holder 6 is locked so that it does not come out in the axial direction by engaging the insertion hole 6a with the flange 5a, and the slider 8 is slidable in the axial direction. Even if it is slidable in the axial direction by a washer 10 locked to the shaft 5 so as not to come out in the axial direction via the ring 9, the washer 10 is configured not to come out of the shaft 5. The compression spring 11 is accommodated in the slider 8 and is resiliently wound around the shaft 5 between the slider 8 and the slider 8.
The slider 8 is urged to slide in one direction. A pair of convex cams 8b, 8b and concave cams 8d, 8d are provided at opposing positions on the rotary cam member 7 side of the outer periphery of the slider 8, and locking projections 8c, 8c are provided in the outer peripheral axis direction. The locking projections 8c, 8c are engaged with locking grooves 2d provided in the mounting portion 2c of the fixed casing 2.

A push button housing hole 6b is provided at an end of the holder 6, and a push button 12 is mounted so as to be able to protrude and retract. The push button 12 is attached to the end of a pipe-shaped push rod 13 which penetrates the holder 6 non-rotatably and slidably in the axial direction. A compression spring 14 is elastically provided between the push button 12 and the holder 6. The push rod 13 has the shaft 5 penetrated through an insertion hole 13b provided in the axial direction thereof, and a pair of leg portions 13c having a circular cross section penetrates the arc holes 6g provided in the holder 6. And is fixed to the push button 12. Although the push button 12 is slidably urged by the compression spring 14 in a direction to come out of the push button receiving hole 6b, the push rod 13 fixed to the push button 12 is locked in the holder 6 so that the push button 12
Does not fall out of the receiving hole 6b.

A holder 6 is provided on the outer periphery of the push rod 13.
The torsion spring 15 is rewinded while being housed therein, and one end 15a of the locking groove 6d with an inclined portion 6e is provided at the edge of the rotary cam member 7 and is inclined in the rewinding direction of the torsion spring 15. And the other end 15b is locked in a locking hole 6f in the holder 6. At the edge of the rotary cam member 7 on the holder 6 side, an inclined part 7 inclined in the rewinding direction of the torsion spring 15 for locking and releasing one end of the torsion spring 15
An engagement groove 7d with e is provided. A pipe 17 is attached to the push rod 13 so as to be fitted on the shaft 5 so as to be slidable in the axial direction in the coaxial direction. further,
A push collar 18 housed in the rotary cam member 7 is fitted on the shaft 5 so as to be slidable in the axial direction with a foot 18 b in contact with a left end of the pipe 17. The portion 18c is in contact with the right end of the slider 8. And push rod 13 and pipe 1
7 and the push collar 18 constitute release means D for the thrust cam mechanism C. A pair of locking ridges 6c, 6c are provided on the outer periphery of the holder 6, and the mounting portion 2c of the fixed housing 2 is provided.
Is engaged with the locking groove 2d provided in the above.

The rotating cam member 7 has a pipe 17 inside thereof.
And the push collar 18 are slidably housed therein, and can be rotated around the axis of the shaft 5 by a washer 20 locked by an E-ring 19 attached to the circumferential groove 5c of the shaft 5, but the slider 8 side Is prevented from sliding in the axial direction. The left end of the push collar 18 is in contact with the slider 8. This rotary cam member 7
Is provided with a concave cam 7b accommodating the convex cam 8b of the slider 8, and a pair of locking ridges 7c, 7c provided on the outer periphery thereof.
Is configured to engage with a locking groove 3 d provided in the mounting portion 3 c of the movable housing 3, and to be able to rotate around the axis of the shaft 5 together with the movable housing 3. On the holder 6 side of the rotary cam member 7, a pressure receiving cam portion 7 f that comes into contact with the pressing cam portion 13 a of the push rod 13 according to the rotation position of the rotary cam member 7 is provided, and the push rod 1 via the push button 12 is provided.
The rotation cam member 7 is configured to rotate slightly by sliding in the axial direction 3. Thus, the rotating cam mechanism A of the rotating cam member 7 is constituted by the pressing cam portion 13a of the push rod 13 and the pressure receiving cam portion 7f of the rotating cam member 7. When the push rod 13 is pushed through the push button 12, the pushing force is transmitted to the push collar 18 via the pipe 17, and the slider 8 is pushed in the axial direction to disengage the engagement between the convex cam 8b and the concave cam 7b. Let it. Rotating cam member 7
The slider 8 further includes a concave cam 8d and a convex cam 7d.
g is provided, and the concave cams 7b and 8d and the convex cams 7g and 8b constitute a thrust cam mechanism C. Thus, the torsion spring 15, the locking groove 7 d of the rotating cam member 7, and the locking groove 6 d of the holder 6 form the rotating cam member 7.
Of the rotation urging means B.

Therefore, as shown in FIG. 1, in a state where the movable housing 3 is closed with respect to the fixed housing 2, the rotation urging means B for rotationally urging the rotary cam member 7 in one direction.
As shown in FIG. 3, one end 15a of the torsion spring 15 is locked in a locking groove 6d of the holder 6, and the convex cam 8b of the slider 8 is inserted into the concave cam 7b of the rotary cam member 7. , The rotary cam member 7 is not urged to rotate in the direction to open the movable housing 3,
The movable housing 3 is kept closed with respect to the fixed housing 2.

In this state, when the push button 12 is pressed, the push button 12 is pushed in against the elasticity of the compression spring 11, so that the pressing force is released by the release means comprising the push rod 13, the pipe 17, and the push collar 18. The pressure cam portion 7f of the rotary cam member 7 is pushed by the pressing cam portion 13a of the push rod 13 of the rotary cam mechanism A, while being transmitted to the slider 8 via D and causing the convex cam 8b to escape from the concave cam 7b. Since the rotary cam member 7 is rotated, the position of the locking groove 7d is rotationally moved, and the one end 15a of the torsion spring 15 that has locked the one end 15a to the locking groove 6d of the holder 6 is connected to the engagement groove 15d. The rotary cam member 7 is urged to rotate in one direction by sliding along the inclined portion 6e of the stop groove 6d and being locked in the locking groove 7d of the rotary cam member 7. Runode, as the rotary cam member 7 shown in FIG. 1 and FIG. 21, the movable enclosure 3 attached to this
Will be automatically opened up to 20 °.

Thereafter, the movable housing 3 is manually opened, and is opened up to 165 ° at which the convex cam 7g of the rotary cam member 7 is fitted into the concave cam 8d of the slider 8. At this time, when the movable housing 3 is opened from an opening angle of 20 ° or more, as shown in FIG. 6, the convex cam 7g of the rotating cam member 7 and the convex cam 8b of the slider 8 are compressed by the compression spring 11b. The movable housing 3 is moved from the vicinity of 145 ° to the convex cam 8b of the slider 8 to the concave cam 7b of the rotary cam member 7 because of the elastic contact force of the movable cam 3 from around 145 °. As it falls, it will open automatically to be sucked in.

Although the movable side housing 3 opened to 165 ° is closed manually, up to the first 145 °, the convex cam 8b of the slider 8 is moved by the compression cam 11 from the concave cam 7b of the rotary cam member 7. A resistance to escape against the elasticity is encountered, but after that, it is closed so that it can be stopped and held at a free stop, that is, at an arbitrary closed position, and from the closed position of about 20 °, the convex cam of the slider 8 is moved. When the rotary cam member 8b falls into the concave cam 7b of the rotary cam member 7, the rotary cam member 7 is automatically closed so as to be sucked. At this time, the one end portion 15a of the torsion spring 15 locked in the locking groove 7d of the rotary cam member 7 is turned into the inclined portion 7e of the locking groove 7d and the locking groove 6d on the holder 6 side.
After the inclined portions 6e coincide with each other, the inclined portions 7e are slid and locked by the inclined portions 6e of the retaining grooves 6d of the holder 6. One end 15a of the torsion spring 15 locked on the inclined portion 6e of the locking groove 6d on the holder 6 side is
The rotating cam member 7 is blocked by the flat edge, and does not urge the rotating cam member 7 to rotate in one direction. In this way, the movable housing 3 returns to the state shown in FIG. 1, and the rotary cam member 7 returns to the closed state shown in FIG.

Next, when the movable housing 3 is manually opened from the beginning, the push button 12 is not pressed, and the movable housing 3 is opened by putting a finger on the movable housing 3. In this case, the convex cam 8b of the slider 8 escapes from the concave cam 7b of the rotary cam member 7 that rotates together with the opening operation of the movable side housing 3 against the elastic force of the compression spring 14, so that the manual operation is performed. The opening operation can be performed by using the above.

The subsequent opening / closing operation is the same as that described above, and a description thereof will be omitted.

Although the present invention has been described with reference to the case where the present invention is applied to a portable telephone which can be opened and closed, the present invention is not limited to the above. For example, an opening and closing device for a display unit of a small notebook personal computer and other OA It could be used as a switchgear for equipment.

Further, the rotary cam mechanism A, the rotation urging means B, the thrust cam mechanism C, and the releasing means D are not limited to those of the above-described embodiment. In particular, the releasing means D can reduce the number of parts.

[0021]

The present invention is configured as described above.
The movable housing can be opened automatically by pressing the push button when the movable housing is to be automatically opened with respect to the fixed housing. Can be opened by raising it, and when this is used in an openable / closable portable telephone, it is possible to achieve an effect that operability can be further improved.

[Brief description of the drawings]

FIG. 1 is a side view of a portable telephone using a small opening / closing device according to the present invention.

FIG. 2 is a plan view of the mobile phone of FIG. 1 with the movable housing opened with respect to the fixed housing.

FIG. 3 is a plan view of the small opening / closing device according to the present invention.

4 is a partial sectional plan view of the small opening / closing device shown in FIG. 3;

FIG. 5 is a plan sectional view of the small opening / closing device shown in FIG. 3;

FIG. 6 is a plan view illustrating a use state of the small opening / closing device according to the present invention.

FIG. 7 is a left side view of a holder of the small opening / closing device according to the present invention.

FIG. 8 is a front view of a holder of the small opening / closing device according to the present invention.

FIG. 9 is a front view of a push rod of the small opening / closing device according to the present invention.

FIG. 10 is a right side view of a push rod of the small opening / closing device according to the present invention.

FIG. 11 is a left side view of the rotary cam member of the small opening / closing device according to the present invention.

FIG. 12 is a right side view of a rotary cam member of the small opening / closing device according to the present invention.

FIG. 13 is a plan sectional view of a rotary cam member of the small opening / closing device according to the present invention.

FIG. 14 is a front view of a rotary cam member of the small opening / closing device according to the present invention.

FIG. 15 is a left side view of a push collar of the small opening / closing device according to the present invention.

FIG. 16 is a right side view of a push collar of the small opening / closing device according to the present invention.

FIG. 17 is a plan sectional view of a push collar of the small opening / closing device according to the present invention.

FIG. 18 is a right side view of a slider of the small opening / closing device according to the present invention.

FIG. 19 is a plan sectional view of a slider of the small opening / closing device according to the present invention.

FIG. 20 is a front view of a slider of the small opening / closing device according to the present invention.

FIG. 21 is a torque characteristic diagram of the small switchgear according to the present invention.

[Explanation of symbols]

 Reference Signs List A rotating cam mechanism B rotating urging means C thrust cam mechanism D releasing means 1 mobile phone 2 fixed housing 2a transmitting section 2b keyboard 2c mounting section 3 movable housing 3a receiving section 3b display section 3c mounting section 4 opening / closing device Reference Signs List 5 shaft 6 holder 7 rotating cam member 7b concave cam 7d locking groove 7f pressure receiving cam portion 7g convex cam 8 slider 8b convex cam 8d concave cam 10 washer 11 compression spring 12 push button 13 push rod 14 compression spring 15 torsion spring

[Procedure amendment]

[Submission date] December 28, 1999 (1999.12.
28)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

A holder 6 is provided on the outer periphery of the push rod 13.
The torsion spring 15 is rewinded while being housed therein, and one end 15a of the locking groove 6d with an inclined portion 6e is provided at the edge of the rotary cam member 7 and is inclined in the rewinding direction of the torsion spring 15. And the other end 15b is locked in a locking hole 6f in the holder 6. At the edge of the rotary cam member 7 on the holder 6 side, an inclined part 7 inclined in the rewinding direction of the torsion spring 15 for locking and releasing one end of the torsion spring 15
An engagement groove 7d with e is provided. A pipe 17 is attached to the push rod 13 so as to be fitted on the shaft 5 so as to be slidable in the axial direction in the coaxial direction. further,
A push collar 18 having an insertion hole 18a housed in the rotary cam member 7 with the foot 18b in contact with the left end of the pipe 17 is fitted on the shaft 5 so as to be slidable in the axial direction. The left end 18 c of the collar 18 is in contact with the right end of the slider 8. The push rod 13, the pipe 17, and the push collar 18 constitute release means D of the thrust cam mechanism C. Holder 6
A pair of locking projections 6c, 6c are provided on the outer periphery of the fixed housing 2 and are engaged with locking grooves 2d provided in the mounting portion 2c of the fixed housing 2.

[Procedure amendment 2]

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FIG. 4

[Procedure amendment 4]

[Document name to be amended] Drawing

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[Procedure amendment 5]

[Document name to be amended] Drawing

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[Procedure amendment 6]

[Document name to be amended] Drawing

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FIG. 11

[Procedure amendment 7]

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FIG.

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 3J105 AA13 AB11 AC07 BA23 BA47 BB05 DA13 DA23 DA32 4E360 AA02 AB03 AB12 AB17 BB02 BB12 BB17 BB27 BC03 BC04 BC06 EA13 EC11 ED04 ED12 ED13 ED23 ED27 GA02 GA06 GA46 GB26 GB46 5K LL06 RR09

Claims (3)

[Claims] 1. A holder attached to an attachment portion of a fixed-side housing, a shaft attached in an axial direction of the holder, and a rotation about the shaft in contact with the holder and being turned in one direction to rotate. A rotary cam member attached to the mounting portion of the movable housing that is movably attached; and a shaft slidably biased in one direction in contact with the rotary cam member on the shaft so as to be slidable in the axial direction. And a slider that is also non-rotatably and slidably attached to the mounting portion of the fixed-side housing in the axial direction so as to be slidable in one direction where the slider is attached to one end of the holder so as to be retractable. A push button, and a thrust cam mechanism provided between the rotary cam member and the slider, and by pressing the push button, the thrust cam mechanism is operated to operate the rotary cam member. The movable housing can be opened relative to the fixed housing by allowing rotation, and the thrust cam mechanism is manually operated to open the movable housing relative to the fixed housing without pressing a push button. A small opening and closing device, characterized in that the opening and closing operation is performed. 2. A holder attached to an attachment portion of a fixed-side housing, a shaft attached in an axial direction of the holder, and a movable side around the shaft which is attached rotatably in contact with the holder. A rotary cam member attached to a mounting portion of the housing; and a mounting portion of the fixed side housing which is slidably biased in one direction in contact with the rotary cam member on the shaft so as to be slidable in the axial direction. A slider that is non-rotatably and slidably mounted in the axial direction, a push button that is slidably biased in one direction that is mounted on one end of the holder so as to be able to protrude and retract, and is mounted in the axial direction of the push button. A push rod that slidably penetrates through the holder and reaches the rotating cam member;
A rotary cam mechanism provided between the push rod and the rotary cam member for converting the pressing force of the push rod into rotation of the rotary cam member; and rotating the rotary cam member in one direction according to its rotation angle. A rotation urging means for energizing, a thrust cam mechanism provided between the rotary cam member and the slider for controlling the rotation of the rotary cam member, and a force of a push rod sliding when the push button is pressed. And a releasing means for releasing the thrust cam mechanism. 3. The torsion spring is constituted by a torsion spring, and one end of the torsion spring is provided on an edge of the rotary cam member according to a rotation angle of the rotary cam member. The torsion spring is provided at one of a locking groove inclined in a returning direction and a locking groove inclined in a rewinding direction of the torsion spring provided on an edge of the holder. A small switchgear.