JP2004340209A - Opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing device to be used in electronic devices of various sorts operating slowly in the prescribed opening/closing position without requiring any separate component and capable of giving a good operating feeling in opening or closing. <P>SOLUTION: The opening/closing device is structured so that a rotor 21 fitted at the periphery with a protruding piece 21A and/or a one 21B is attached fast to a moving body 4, is equipped with an engagement part 22A and/or a one 22B whereto the protruding piece 21A and/or 21B abuts, and is furnished with an actuator piece 22 whereon a friction means for rotation is formed, whereby the energizing force of the moving body 4 is relieved in the prescribed opening/closing position, so that the obtained opening/closing device can operate slowing in the opening/closing position without requiring any separate component and can give a good operating feeling in opening or closing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a switching device used for various electronic devices such as a mobile phone and a personal computer.
[0002]
[Prior art]
In recent years, as electronic devices such as mobile phones and personal computers have become smaller and lighter, so-called foldable types, in which a movable housing is mounted on a fixed housing so as to be openable and closable, have been increasing. There is also a demand for an open / close device to be used that has a good opening / closing operation feeling and a reliable opening / closing position.
[0003]
Such a conventional switchgear will be described with reference to FIGS.
[0004]
In these drawings, the cross-sectional views are enlarged in the radial direction in order to make it easier to understand the relationship between the fixed cam and the movable cam.
[0005]
FIG. 8 is a cross-sectional view of a conventional switchgear, and FIG. 9 is an exploded perspective view of the same. In the same figure, reference numeral 1 denotes a substantially cylindrical fixed case having an opening on the left side, and 2 denotes a substantially cylindrical fixed body. The fixed body 2 is housed in the movable body 1 so as to be movable in the axial direction, and the left side of the fixed body 2 is formed with a protruding portion 3A and two inclined portions 3B and 3C extending right and left from the protruding portion 3A. Fixed cam 3 is provided.
[0006]
Reference numeral 4 denotes a movable member having a substantially cylindrical shape, which is rotatably arranged in the opening and closing direction with respect to the fixed body 2, and has a fixed portion 4A protruding from an opening in the left side surface of the fixed case 1 at the left end. In addition, a movable cam 5 is provided on a right side surface which is a surface facing the fixed cam 3.
[0007]
The fixed body 2 is urged in the direction of the movable body 4 by the coil-shaped spring 6 mounted in a slightly bent state between the fixed case 1 and the right inner surface, and the tip of the movable cam 5 is It is in elastic contact with the inclined portion 3B.
[0008]
Further, reference numeral 7 denotes a substantially cylindrical movable shaft. The movable body 4 is fixed to the left end of the movable shaft 7 and the right end is inserted through the hollow portion of the fixed body 2 and the spring 6 and fixed by the retaining ring 8. An opening / closing device 10 is rotatably locked to the right outer surface of the case 1.
[0009]
Further, in the opening / closing device 10 configured as described above, for example, as shown in a perspective view of the mobile phone in FIG. 7, the fixed case 1 includes an operation unit 12 </ b> A including a plurality of keys on an upper surface and a voice input unit such as a microphone. The fixed portion 4A of the movable body 4 is fixed to the movable housing 13 having a display portion 13A such as an LCD or the like and a sound output portion 13B such as a speaker formed on the surface thereof. The electronic apparatus is configured by the movable housing 13 being pivotally supported by the device 10 so that the movable housing 13 can be opened and closed with respect to the fixed housing 12.
[0010]
In the above configuration, as shown in FIG. 8, when the tip of the movable cam 5 is in elastic contact with the inclined portion 3B below the fixed cam 3, the movable body 4 is urged by the spring 6 in the downward closing direction. Therefore, the movable housing 13 to which the fixed portion 4A is fixed is held in a closed state with respect to the fixed housing 12.
[0011]
Then, when the movable housing 13 is opened by hand from this closed state, the movable body 4 having the fixed portion 4A fixed to the movable housing 13 rotates upward, and the fixed body 2 moves right while bending the spring 6. The movable body 5 moves upward, the tip of the movable cam 5 elastically contacts the upper inclined portion 3C beyond the protruding portion 3A of the fixed cam 3, and the movable body 4 is urged in the upward opening direction. Is open.
[0012]
In other words, the movable body 4 fixed to the movable housing 13 is rotated so that the tip of the movable cam 5 elastically contacts one of the inclined portions 3B and 3C of the fixed cam 3, and the movable body 4 is closed or opened by the spring 6. The opening and closing operation of the movable housing 13 with respect to the fixed housing 12 is performed by biasing in the direction.
[0013]
As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
[0014]
[Patent Document 1]
JP-A-2002-89542
[Problems to be solved by the invention]
However, in the above-mentioned conventional opening / closing device, since the movable body 4 is always urged in the closing or opening direction by the spring 6, the movable housing 13 is gently operated just before being completely opened or closed. However, there is a problem that other components such as a damper and a moderation component are required to reduce the urging force of the movable body 4.
[0016]
The present invention solves such a conventional problem, and provides an opening / closing device that does not require other components, can perform a gentle operation at a predetermined opening / closing position, and can obtain a good opening / closing operation feeling. The purpose is to:
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
[0018]
According to the invention described in claim 1 of the present invention, a rotating body having a protruding piece formed on the outer periphery or side surface is fixed to a movable body, and an engaging portion with which the protruding piece of the rotating body abuts is provided, so that friction against rotation is provided. By providing an operating body having means formed therein, the opening / closing device is configured so as to reduce the biasing force of the movable body at a predetermined opening / closing position. And an opening / closing device having a good opening / closing operation feeling can be obtained.
[0019]
According to a second aspect of the present invention, a rotating body having a projecting piece formed on an outer periphery or a side surface is fixed to a movable body, and an operating body provided with an engaging portion on which the projecting piece of the rotating body slides is provided. The opening and closing device is formed by forming friction means against rotation between the protruding piece and the engaging portion, and the biasing force of the movable body is reduced at a predetermined opening and closing position, so that another component is not required. This has the effect that an opening / closing device that provides a good opening / closing operation feeling can be obtained.
[0020]
According to a third aspect of the present invention, in the first or second aspect, the friction means is formed of a lubricant, and the friction means is formed of a lubricant such as grease or oil having a high viscosity. The opening and closing device can be formed at a lower cost as compared with a case where the rotating body and the operating body are formed of a high-viscosity synthetic resin or the like to provide friction means.
[0021]
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, a plurality of protruding pieces are provided on the rotating body, and the gently moving operation is performed at a predetermined position in any of the opening and closing directions. Can be performed.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0023]
The same components as those described in the section of the related art are denoted by the same reference numerals, and detailed description will be simplified.
[0024]
In addition, in these drawings, the cross-sectional views are enlarged in the radial direction so that the relationship between the fixed cam and the movable cam can be easily understood.
[0025]
(Embodiment 1)
The first embodiment of the present invention will be described in particular with reference to the first embodiment.
[0026]
FIG. 1 is a cross-sectional view of a switchgear according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the switchgear. In FIG. The fixed body 2 is housed in the fixed case 1 so as to be movable in the axial direction, and a protrusion 3A is provided on the left side of the fixed body 2 and extends left and right from the protrusion 3A. A fixed cam 3 formed from two inclined portions 3B and 3C is provided.
[0027]
Reference numeral 4 denotes a substantially cylindrical metal movable body which is rotatably arranged in the opening and closing direction with respect to the fixed body 2 and has a fixed part 4A protruding from an opening on the left side of the fixed case 1 at the left end. Are formed, and a movable cam 5 is provided on a right side surface which is a surface facing the fixed cam 3.
[0028]
The fixed body 2 is urged in the direction of the movable body 4 by the coiled spring 6 mounted in the fixed case 1 in a slightly bent state, and the tip of the movable cam 5 is elastically moved toward the inclined portion 3B of the fixed cam 3. In contact.
[0029]
Further, reference numeral 20 denotes a substantially cylindrical movable shaft. The movable body 4 is fixed to the left end of the movable shaft 20, and a plurality of projecting pieces 21A are formed on the outer periphery on the right inner side of the fixed case 1 at the right end. The rotating body 21 on which 21B is formed is fixed.
[0030]
Reference numeral 22 denotes a substantially ring-shaped operating body which is rotatably disposed on the right side of the rotating body 21 and has a plurality of engaging portions 22A and 22B protruding from the left side surface and is fixed to the right side surface of the operating body 22. Lubricant 23 such as high-viscosity grease or oil is applied between the right inner surface of case 1 and frictional means against rotation is formed.
[0031]
The rotating body 21 and the operating body 22 are covered by a cover 24, and the right end of the movable shaft 20 is inserted through the hollow part of the fixed body 2, the spring 6, the cover 24, etc. The opening / closing device 30 is rotatably locked to the opening / closing device 30.
[0032]
Further, in the opening / closing device 30 configured as described above, as shown in the perspective view of the mobile phone in FIG. 7, the fixed case 1 includes an operation unit 12A including a plurality of keys on an upper surface and a voice input unit 12B such as a microphone. The fixed portion 4A of the movable body 4 is fixed to the movable housing 13 having a display portion 13A such as an LCD and a sound output portion 13B such as a speaker formed on the surface thereof. Accordingly, the movable housing 13 is pivotally supported on the fixed housing 12 so as to be openable and closable, thereby forming an electronic device.
[0033]
In the above configuration, as shown in FIG. 1, when the tip of the movable cam 5 is in elastic contact with the inclined portion 3 </ b> B below the fixed cam 3, the movable body 4 is urged by the spring 6 in the downward closing direction. Therefore, the movable housing 13 to which the fixed portion 4A is fixed is held in a closed state with respect to the fixed housing 12.
[0034]
Then, when the movable housing 13 is opened by hand from this closed state, the movable body 4 having the fixed portion 4A fixed to the movable housing 13 rotates upward, and the fixed body 2 moves right while bending the spring 6. The movable body 5 moves upward, the tip of the movable cam 5 elastically contacts the upper inclined portion 3C beyond the protruding portion 3A of the fixed cam 3, and the movable body 4 is urged in the upward opening direction. Is open.
[0035]
In other words, the movable body 4 fixed to the movable housing 13 is rotated so that the tip of the movable cam 5 elastically contacts one of the inclined portions 3B and 3C of the fixed cam 3, and the movable body 4 is closed or opened by the spring 6. By biasing in the direction, the movable casing 13 is opened and closed with respect to the fixed casing 12.
[0036]
At this time, as shown in the partial cross-sectional view of FIG. 3, the rotating body 21 fixed to the right end of the movable shaft 20 and integrated with the movable body 4 also moves from the closed state of FIG. With the rotation of, as shown in FIG. 3B, it rotates counterclockwise in the opening direction.
[0037]
When the movable housing 13 is opened by a predetermined angle as shown in FIG. 3C, the protruding piece 21A of the rotating body 21 contacts the engaging portion 22B of the operating body 22, and the protruding piece 21B contacts the engaging portion 22A. After that, as shown in FIG. 3D, the engaging member 22B is pressed by the protruding piece 21A, and the operating body 22 pressed by the engaging portion 22A by the protruding piece 21B also rotates together with the rotating body 21.
[0038]
However, since the high-viscosity lubricant 23 is applied between the operating body 22 and the fixed case 1 to form friction means as described above, the movable housing 13 is opened at a predetermined angle in FIG. From the state shown in FIG. 3C to the state shown in FIG. 3D in which the movable body 4 is completely opened, the urging force of the movable body 4 is weakened via the rotating body 21 and the movable shaft 20 due to the friction of the operating body 22. The movement of the body 13 becomes gentle.
[0039]
Further, when the movable housing 13 is closed from this open state, as shown in FIG. 3E, the protruding piece 21A of the rotating body 21 is disengaged from the engaging portion 22B of the operating body 22, and the protruding piece 21B is disengaged. The rotator 21 rotates clockwise in the closing direction apart from the engagement portions 22A.
[0040]
Then, when the state shown in FIG. 3F immediately before the movable housing 13 is completely closed is reached, the projecting piece 21A of the rotating body 21 is engaged with the engaging portion 22A of the operating body 22 and the projecting piece 21B is engaged with the engaging portion 22B. , And thereafter, the movable housing 13 is configured to operate slowly even until the movable housing 13 is completely closed.
[0041]
As described above, according to the present embodiment, the rotating body 21 having the protruding pieces 21A and 21B formed on the outer periphery is fixed to the movable body 4, and the engaging portions with which the protruding pieces 21A and 21B of the rotating body 21 abut. By providing the actuating body 22 provided with the frictional means for rotation provided with the movable body 4 at 22 A and 22 B, the urging force of the movable body 4 is reduced at a predetermined opening and closing position. Thus, it is possible to obtain an opening / closing device which operates slowly and has a good opening / closing operation feeling.
[0042]
By forming the friction means with a lubricant 23 such as high-viscosity grease or oil, an opening and closing device is provided as compared with the case where the rotating body 21 and the operating body 22 are formed of a high-viscosity synthetic resin and the friction means is provided. Can be formed at low cost.
[0043]
Further, a plurality of protruding pieces 21A and 21B are provided on the rotating body 21 and these are brought into contact with the plurality of engaging portions 22A and 22B of the operating body 22 so that the predetermined position is maintained in both the opening and closing directions. The operation can be performed slowly.
[0044]
(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG.
[0045]
The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
[0046]
FIG. 4 is a sectional view of an opening / closing device according to a second embodiment of the present invention, and FIG. 5 is an exploded perspective view of the same, in which a fixed body 2 having a fixed cam 3 formed on the left side is a fixed case. 1 that the movable body 4 having the movable cam 5 formed on the right side is rotatably arranged in the opening and closing direction with respect to the fixed body 2. This is the same as in the first embodiment.
[0047]
Further, the fixed body 2 is urged in the direction of the movable body 4 by the spring 6 in a slightly bent state, and the tip of the movable cam 5 is in elastic contact with the inclined portion 3B of the fixed cam 3, and the left end of the movable shaft 20 The movable body 4 is fixed to the movable member 4 in the same manner as in the first embodiment, except that a protruding piece 25A is formed on the outer periphery of the right inner side of the fixed case 1 at the right end of the movable shaft 20. The rotating body 25 is fixed.
[0048]
A substantially cylindrical operating body 26 is fixedly provided on the fixed case 1 on the right inner side surface of the fixed case 1, and an engaging portion 26 </ b> A protruding in the axial center line direction is formed on the inner periphery of the operating body 26. A lubricating agent 23 such as grease or oil having high viscosity is applied to the engaging portion 26A to form a friction means against rotation.
[0049]
Then, the right end of the movable shaft 20 is inserted through the hollow portion of the fixed body 2, the spring 6, the operating body 26, and the like, and is rotatably locked to the right outer surface of the fixed case 1 by the retaining ring 8, thereby constituting the opening / closing device 30A. Have been.
[0050]
In addition, as shown in the perspective view of the mobile phone of FIG. The electronic device is configured to be fixed and the movable housing 13 is pivotally supported on the fixed housing 12 so as to be openable and closable, similarly to the case of the first embodiment.
[0051]
Further, in the above configuration, the movable body 4 fixed to the movable housing 13 is rotated so that the tip of the movable cam 5 is elastically contacted with one of the inclined portions 3B and 3C of the fixed cam 3, and the movable body 4 is spring-loaded. 6, the opening and closing operation of the movable casing 13 with respect to the fixed casing 12 is performed by urging the movable casing 13 in the closing or opening direction, similarly to the first embodiment. The configuration for alleviating the urging force of the movable body 4 by 6 is different from that of the first embodiment.
[0052]
That is, as shown in the partial cross-sectional view of FIG. 6, when the movable housing 13 is opened from the closed state of FIG. 6A, the rotation of the movable body 4 fixed to the movable housing 13 causes the rotation of FIG. As shown in b), the rotating body 25 also rotates counterclockwise in the opening direction.
[0053]
When the movable housing 13 is opened at a predetermined angle as shown in FIG. 6C, the protruding piece 25A of the rotating body 25 comes into contact with the engaging portion 26A of the operating body 26, and thereafter, FIG. As shown in the figure, the protruding piece 25A slides on the engaging portion 26A.
[0054]
At this time, as described above, since the high-viscosity lubricant 23 is applied to the engaging portion 26A to form the friction means, the movable housing 13 is opened from the state shown in FIG. Until the fully opened state shown in FIG. 6D, the urging force of the movable body 4 is reduced via the rotating body 25 and the movable shaft 20 due to the friction with the operating body 26, so that the operation of the movable housing 13 is not performed. It is configured to be performed slowly.
[0055]
As described above, according to the present embodiment, the rotating body 25 having the protruding piece 25A formed on the outer periphery is fixed to the movable body 4, and the engaging portion 26A on which the protruding piece 25A of the rotating body 25 slides is formed. By providing the actuated body 26 provided and forming friction means for rotation between the protruding piece 25A and the engaging portion 26A, the urging force of the movable body 4 is reduced at a predetermined opening / closing position. An opening / closing device having a good opening / closing operation feeling can be obtained without the need.
[0056]
In the above description, the projecting piece 25A is formed only on the right side of the outer periphery of the rotating body 25, and the biasing force of the movable body 4 is reduced only when the movable housing 13 is opened. If the protruding piece is provided, the operation of the movable casing 13 can be performed slowly even when the movable casing 13 is closed.
[0057]
Further, in the above description, the configuration in which the protruding pieces 21A, 21B, and 25A are formed on the outer periphery of the rotating bodies 21 and 25 has been described. Is possible.
[0058]
Furthermore, although it has a slightly expensive configuration, the rotating bodies 21 and 25 and the working bodies 22 and 26 are formed of a high-viscosity synthetic resin or rubber instead of the lubricant 23 such as high-viscosity grease or oil. Alternatively, a high-viscosity sheet may be attached to these to form friction means.
[0059]
In the above description, the movable housing 13 is opened and closed by hand, and the movable body 4 fixed to the movable body 13 is rotated. However, the push button and the elastic contact position between the movable cam 5 and the fixed cam 3 are set. The present invention is also applicable to a so-called one-push open configuration in which a component such as a reversing cam is provided to open and close the movable casing 13 by pressing a push button from a closed state in addition to opening and closing operations by hand. is there.
[0060]
【The invention's effect】
As described above, according to the present invention, an advantageous effect that an opening / closing device that can obtain a good opening / closing operation feeling without the need for separate components can be realized is obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a switching device according to a first embodiment of the present invention; FIG. 2 is an exploded perspective view of FIG. 3; FIG. FIG. 5 is a sectional view of the same electronic apparatus. FIG. 8 is a sectional view of a conventional switchgear. FIG. 9 is an exploded perspective view of the same. Explanation of code]
DESCRIPTION OF SYMBOLS 1 Fixed case 2 Fixed body 3 Fixed cam 3A Projection part 3B, 3C Inclined part 4 Moving body 4A Fixed part 5 Movable cam 6 Spring 8 Retaining ring 12 Fixed housing 12A Operation part 12B Audio input part 13 Movable housing 13A Display part 13B Sound output unit 20 Movable shaft 21, 25 Rotating body 21A, 21B, 25A Projecting piece 22, 26 Operating body 22A, 22B, 26A Engaging part 23 Lubricant 24 Cover 30, 30A Opening / closing device

Claims (4)

A fixed body provided with a fixed cam on a side surface, a movable body disposed rotatably with respect to the fixed body, and a movable cam provided on a surface facing the fixed cam; and a movable body or the fixed body. And a rotating body having a projecting piece formed on the outer periphery or side surface thereof is fixed to the movable body, and the projecting piece of the rotating body comes into contact with the moving body. An opening / closing device including an engaging body and an operating body provided with friction means for rotation. A fixed body provided with a fixed cam on a side surface, a movable body disposed rotatably with respect to the fixed body, and a movable cam provided on a surface facing the fixed cam; and a movable body or the fixed body. And a spring that elastically contacts the movable cam and the fixed cam. The rotor having a protruding piece formed on the outer periphery or side surface is fixed to the movable body, and the protruding piece of the rotor slides. An opening / closing device provided with an actuating body having an engaging portion formed thereon, and friction means for rotation formed between the projecting piece and the engaging portion. 3. The switching device according to claim 1, wherein the friction means is formed of a lubricant. 3. The opening / closing device according to claim 1, wherein a plurality of projecting pieces are provided on the rotating body.

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