JP2006292062A - Switchgear - Google Patents

Abstract

An object of the present invention is to provide an opening / closing device used in various electronic devices with a simple configuration and reliable opening / closing operation.
By mounting a plurality of flat portions 15B on the outer periphery of a substantially cylindrical case 15 containing a fixed body 1, a movable body 3, and the like, a flat and large flat portion 15B is attached to a movable casing 23. Since the opening / closing device can be attached to the movable casing 23 in contact with the locking portion 23F on the inner periphery of the hole 23E, when the movable casing 23 is opened to a predetermined angle and then a force in the opening direction is further applied. However, it is possible to obtain an opening / closing device capable of preventing the breakage of the component parts and performing a reliable opening / closing operation with a simple configuration.
[Selection] Figure 1

Description

  The present invention relates to an opening / closing device used in various electronic devices such as a mobile phone and a personal computer.

  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 casing is attached to a fixed casing so that it can be opened and closed are increasing. There is also a demand for an opening / closing device to be used that is reliable and easy to use.

  Such a conventional switchgear will be described with reference to FIGS.

  In these drawings, the cross-sectional views are enlarged in the radial direction to facilitate understanding of the relationship between the fixed cam and the movable cam.

  FIG. 5 is a sectional view of a conventional switchgear, and FIG. 6 is an exploded perspective view. In FIG. 5, reference numeral 1 denotes a substantially cylindrical metal fixing body having a fixing portion 1A formed on the left side surface. A fixed cam 2 formed of a projecting portion 2A and two inclined portions 2B and 2C extending left and right from the projecting portion 2A is provided on the outer periphery of the surface.

  Reference numeral 3 denotes a substantially cylindrical metal movable body which is disposed so as to be rotatable in the opening / closing direction with respect to the stationary body 1, and the movable cam 4 is disposed on the outer periphery of the left side which is a surface facing the stationary cam 2. Is provided.

  Reference numeral 5 denotes a substantially cylindrical and sintered alloy case. The case 5 is provided with a substantially U-shaped holding portion 5A protruding outward, and the outer periphery of the movable body 3 is provided on the inner periphery of the holding portion 5A. The guide protrusion 3A is inserted to hold the movable body 3 accommodated in the case 5 so as to be movable in the axial direction.

  Further, 6 is a coiled spring mounted in a slightly bent state between the right side surface of the movable body 3 and the right bottom surface of the case 5, and the movable body 3 is urged to the left by the spring 6, and the movable cam The tip of 4 is in elastic contact with the inclined portion 2 </ b> B of the fixed cam 2.

  Reference numeral 7 denotes a substantially cylindrical fixed shaft. The fixed body 1 is fixed to the left end portion of the fixed shaft 7, and the right end portion is inserted through the hollow portion of the movable body 3 and the spring 6. 5 is rotatably mounted on the right side surface.

  And the fixing | fixed part 1A of the fixed body 1 protrudes rotatably from the case 5 left side surface, and this fixed body 1, the movable body 3, the spring 6, etc. are accommodated in the case 5, and the switchgear 10 is comprised.

  In addition, the opening / closing device 10 configured as described above includes, for example, an operation unit 22A in which the fixing unit 1A of the fixing body 1 includes a plurality of keys on the upper surface as shown in the perspective view of the mobile phone in FIG. The case 5 is attached to a fixed housing 22 formed with a sound input unit 22B such as a microphone, and a movable case 23 formed with a display unit 23A such as an LCD and a sound output unit 23B such as a speaker on the surface, and is opened and closed. The movable housing 23 is pivotally supported by the device 10 so as to be openable and closable with respect to the fixed housing 22 to constitute an electronic device.

  At this time, as shown in the partial cross-sectional view of FIG. 7, the substantially cylindrical mounting portion 23C of the movable casing 23 is provided with groove-shaped locking portions 23D above and below the mounting holes. When the substantially U-shaped holding portion 5A protruding outward from the case 5 is inserted into the portion 23D and the movable housing 23 is opened and closed, the inner surface of the locking portion 23D comes into contact with the outer surface of the holding portion 5A. The case 5 is formed so as to rotate together with the movable housing 23.

  In the above configuration, as shown in FIG. 5, when the tip of the movable cam 4 is in elastic contact with the inclined portion 2 </ b> B below the fixed cam 2, the movable body 3 is urged downward by the spring 6 in the closing direction. Therefore, the movable casing 23 to which the case 5 is attached is held in a closed state with respect to the fixed casing 22 as shown in FIG.

  Then, from this closed state, as shown in FIG. 4 (b), when the movable housing 23 is opened by hand, the inner surface of the locking portion 23D comes into contact with the outer surface of the holding portion 5A, and the case 5 rotates to move. The body 3 rotates while moving in the axial direction in the case 5, and the tip of the movable cam 4 elastically contacts the upper inclined portion 2C beyond the protruding portion 2A of the fixed cam 2, and the movable body 3 is biased in the opening direction. Therefore, the force in the opening direction is applied to the movable casing 23 by this force, and the movable casing 23 is at a predetermined angle of about 150 to 170 degrees with respect to the fixed casing 22 as shown in FIG. Opened.

  That is, by rotating the case 5 attached to the movable casing 23, the movable body 3 is moved in the axial direction, and the tip of the movable cam 4 is elastically contacted with either the inclined portion 2B or 2C of the fixed cam 2. The movable housing 23 is opened and closed with respect to the fixed housing 22.

  In addition, in the state where the movable casing 23 is opened at a predetermined angle in this way, when an extreme force is applied to open the movable casing 23 such as dropping the device or being accidentally pushed from the back side, In addition, the locking portion 23D of the movable housing 23 and the holding portion 5A of the opening / closing device 10 may be damaged, which may hinder subsequent opening / closing operations.

  Accordingly, in order to prevent such a breakage of the locking portion 23D and the holding portion 5A, the mounting portion 23C is enlarged, and the locking portion 23D and the holding portion 5A are formed into a large shape with sufficient strength, or a fixed housing. It is necessary to provide a separate stopper mechanism between the movable housing 22 and the movable housing 23.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2004-245342 A

  However, in the conventional switchgear described above, in order to prevent the movable casing 23 and the switchgear 10 from being damaged when a force is further applied after opening to a predetermined angle, the locking part 23D, the holding part 5A, etc. are large. It is necessary to provide a shape or to provide a separate stopper mechanism for the fixed housing 22 and the movable housing 23, and there is a problem that the switchgear becomes large and the configuration becomes complicated.

  The present invention solves such a conventional problem, and an object of the present invention is to provide an opening / closing device capable of performing a reliable opening / closing operation with a simple configuration.

  In order to achieve the above object, the present invention provides a plurality of flat portions on the outer periphery of a substantially cylindrical case containing a fixed body, a movable body, and the like. Since the switchgear can be attached to the movable casing by contacting the inner periphery of the body mounting hole, even if a force is applied in the opening direction after the movable casing is opened to a predetermined angle, It has the effect of preventing damage and obtaining a reliable switchgear with a simple configuration.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize an opening / closing device capable of performing a reliable opening / closing operation with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In these drawings, the cross-sectional views are enlarged in the radial direction to facilitate understanding of the relationship between the fixed cam and the movable cam.

  Further, the same reference numerals are given to the same components as those described in the background art section, and the detailed description will be simplified.

(Embodiment)
FIG. 1 is a cross-sectional view of a switchgear according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the switchgear, wherein 1 is a substantially cylindrical shape having a fixing portion 1A formed on the left side surface, and is made of steel or copper. A fixed body made of a metal such as an alloy or a sintered alloy, and a plurality of fixed cams formed on the outer periphery of the right side surface by a protruding portion 2A and two inclined portions 2B and 2C extending from the protruding portion 2A to the left and right. 2 are provided symmetrically.

  Reference numeral 3 denotes a substantially cylindrical metal movable body which is disposed so as to be rotatable in the opening / closing direction with respect to the stationary body 1 and has a plurality of movable cams on the outer periphery of the left side which is a surface facing the stationary cam 2. 4 are provided symmetrically.

  Reference numeral 15 denotes a substantially cylindrical metal case. The case 15 is provided with a notch 15A extending in the axial direction, and a guide protrusion 3A on the outer periphery of the movable body 3 is inserted into the notch 15A. The movable body 3 housed in the case 15 is held so as to be movable in the axial direction.

  In addition, a plurality of polygonal flat portions 15B are provided vertically symmetrically on the right side of the outer periphery of the case 15, and a coiled spring 6 is slightly between the right side surface of the movable body 3 and the right bottom surface of the case 15. The movable body 3 is urged to the left by the spring 6, and the distal end of the movable cam 4 is in elastic contact with the inclined portion 2 </ b> B of the fixed cam 2.

  Reference numeral 7 denotes a substantially cylindrical fixed shaft. The fixed body 1 is fixed to the left end portion of the fixed shaft 7, and the right end portion is inserted through the hollow portion of the movable body 3 and the spring 6. 15 is rotatably mounted on the right side surface.

  Then, the fixed portion 1A of the fixed body 1 protrudes from the left side surface of the case 15 so as to be rotatable, and the fixed body 1, the movable body 3, the spring 6 and the like are housed in the case 15 to constitute the opening / closing device 20. ing.

  Further, the opening / closing device 20 configured as described above includes, for example, an operation unit 22A in which the fixing unit 1A of the fixing body 1 includes a plurality of keys on the upper surface as shown in the perspective view of the mobile phone in FIG. A case 15 is attached to a fixed housing 22 formed with a sound input unit 22B such as a microphone, and a case 15 is attached to a movable housing 23 formed with a display unit 23A such as an LCD and a sound output unit 23B such as a speaker on the surface. The movable housing 23 is pivotally supported by the device 20 so as to be openable and closable with respect to the fixed housing 22 to constitute an electronic device.

  At this time, as shown in the partial sectional view of FIG. 3, the substantially cylindrical mounting portion 23C of the movable housing 23 is provided with a mounting portion 23E and a substantially square-shaped locking portion 23F symmetrically. When the case 15 is inserted into the mounting hole 23E, the plurality of flat portions 15B on the right side of the outer periphery of the case 15 come into contact with the locking portion 23F, and the case 15 is movable when the movable casing 23 is opened and closed. It is formed so as to rotate together with the housing 23.

  In the above configuration, as shown in FIG. 1, when the tip of the movable cam 4 is in elastic contact with the inclined portion 2 </ b> B below the fixed cam 2, the movable body 3 is urged downward by the spring 6 in the closing direction. Therefore, the movable casing 23 to which the case 15 is attached is held in a closed state with respect to the fixed casing 22 as shown in FIG.

  When the movable casing 23 is opened by hand from this closed state as shown in FIG. 4B, the locking portion 23F comes into contact with the flat portion 15B, the case 15 rotates, and the movable body 3 becomes the case. 15 is rotated while moving in the axial direction, the tip of the movable cam 4 elastically contacts the upper inclined portion 2C beyond the protruding portion 2A of the fixed cam 2, and the movable body 3 is biased in the opening direction. With this force, a force in an opening direction is applied to the movable casing 23, and the movable casing 23 is opened at a predetermined angle of about 150 to 170 degrees with respect to the fixed casing 22, as shown in FIG. Become.

  That is, by rotating the case 15 attached to the movable casing 23, the movable body 3 is moved in the axial direction, and the tip of the movable cam 4 is elastically contacted with either the inclined portion 2B or 2C of the fixed cam 2. The opening / closing operation of the movable casing 23 with respect to the fixed casing 22 is performed. At this time, the case 15 is flat and the flat portion 15B having a large area abuts on the locking portion 23F of the movable casing 23 and rotates.

  Accordingly, even when an extreme force is applied to open the movable casing 23 such as dropping the device or being accidentally pushed from the back side with the movable casing 23 opened at a predetermined angle, the case 15 and the movable casing 23 Since the flat portion 15B which is flat and has a large area is in contact with the locking portion 23F, it is difficult to cause damage or the like and can be reliably opened and closed.

  As described above, according to the present embodiment, a plurality of flat portions 15B are provided on the outer periphery of the substantially cylindrical case 15 in which the fixed body 1, the movable body 3 and the like are housed. Can be attached to the movable casing 23 by bringing the movable casing 23 into contact with the engaging portion 23F on the inner periphery of the mounting hole 23E of the movable casing 23, so that the movable casing 23 is opened to a predetermined angle and then further opened. Even when this force is applied, it is possible to obtain an opening / closing device that can prevent a component from being damaged and can be reliably opened and closed with a simple configuration.

  Further, as shown in FIG. 3, the radial thickness of the mounting portion 23 </ b> C of the movable housing 23 can be increased by forming a plurality of polygonal flat portions 15 </ b> B inside the outer periphery of the case 15. Therefore, the strength on the movable housing 23 side can also be increased.

  The switchgear according to the present invention can be obtained with a simple configuration and a reliable open / close operation, and is useful as a switchgear used in various electronic devices.

Sectional drawing of the switchgear by one embodiment of this invention Exploded perspective view Partial sectional view of the same Perspective view of mobile phone Cross-sectional view of a conventional switchgear Exploded perspective view Partial sectional view of the same

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed body 1A Fixed part 2 Fixed cam 2A Protruding part 2B, 2C Inclined part 3 Movable body 3A Guide protrusion 4 Movable cam 6 Spring 7 Fixed shaft 8 Retaining ring 15 Case 15A Notch 15B Flat part 20 Opening / closing device 22 Fixed housing 22A Operation unit 22B Audio input unit 23 Movable housing 23A Display unit 23B Audio output unit 23C Mounting unit 23E Mounting hole 23F Locking unit

Claims (1)

A fixed body provided with a fixed cam on a side surface, a movable body arranged rotatably with respect to the fixed body, and a movable cam provided on a surface facing the fixed cam, and the movable cam and the fixed cam An opening / closing device comprising a spring that elastically contacts the housing and a substantially cylindrical case that houses the spring, and a plurality of flat portions provided on the outer periphery of the case.

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