JP2012189094A - Opening and closing device - Google Patents

Abstract

An object of the present invention is to provide a switchgear that can be used in various electronic devices and can be operated in various ways with a good feel.
Inclined portions 27A and 24A are provided on the outer periphery of the movable cam 27 and the inner periphery of the fixed case 24. After the movable cam 27 is brought into elastic contact with the flat portion 2B of the fixed cam 2, the movable cam 27 and the fixed case 24 are When the opening operation is performed by elastically contacting the inclined portions 27A and 24A, the biasing force in the opening direction is relieved by the friction of the inclined portions 27A and 24A, so that the impact to the movable housing 22 can be prevented. At the same time, when the movable cam 27 is held between the predetermined angles at which the movable cam 27 is elastically contacted with the flat portion 2B of the fixed cam 2, the movable casing 22 is brought to a desired angle by friction between the inclined portions 27A and 24A. Since it can be reliably held, an opening / closing device capable of various operations with a good feel can be obtained.
[Selection] Figure 1

Description

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

  In recent years, as electronic devices such as personal computers and electronic dictionaries have been diversified and highly functional, there are an increasing number of devices that perform various operations by opening and closing a movable housing relative to a fixed housing. There is also a demand for a switchgear that can perform various operations with a good feel.

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

  FIG. 6 is a cross-sectional view of a conventional switchgear, and FIG. 7 is an exploded perspective view. In FIG. 6, reference numeral 1 denotes a substantially cylindrical fixed body, and a protrusion 2A protruding rightward is provided at the right end of the fixed body 1. A pair of fixed cams 2 formed from the flat portion 2B are provided.

  Reference numeral 3 is a substantially cylindrical fixed shaft, and 4 is a substantially cylindrical fixed case. The fixed body 1 is housed in the fixed case 4, and the fixed body 1 and the fixed case 4 are respectively disposed at the left end of the fixed shaft 3. It is fixed.

  Reference numeral 6 denotes a substantially cylindrical movable body, which is disposed so as to be rotatable in the opening / closing direction and movable in the axial direction with respect to the fixed body 1, and has a pair of movable cams 7 protruding leftward at the left end. Is formed.

  Further, 8 is a substantially cylindrical movable case, and a convex portion on the outer periphery of the movable body 6 is inserted into the outer peripheral groove, and the movable body 6 can move in the axial direction with respect to the movable case 8, and is integrally formed in the rotational direction. It is accommodated in the movable case 8 so as to rotate.

  The fixed case 4 is rotatably mounted in the left end opening of the movable case 8, the fixed shaft 3 is inserted through the movable body 6 and the movable case 8, and the right end is fixed to the outer surface of the movable case 8 by the retaining ring 9. It is attached to be rotatable.

  A spring 10 wound in a coil shape is mounted in a slightly bent state between the right side surface of the movable body 6 and the inner side surface of the movable case 8, and the movable body 6 is fixed to the left fixed body by the spring 10. It is urged in the direction of 1.

  Further, 11 is a substantially cylindrical reversing body, 12 is a substantially ring-shaped releasing body, a pair of reversing cams 13 protruding rightward at the right end of the reversing body 11, and a concave-convex releasing cam at the right end of the releasing body 12. 14 are formed.

  The reversing body 11 and the releasing body 12 are respectively attached to the fixed case 4 so that the releasing body 12 can rotate so that the reversing body 11 can move in the axial direction.

  Reference numeral 15 denotes a pressing body in which a pressing cam 16 protruding rightward is formed at the right end. Reference numeral 17 denotes a winding spring. One end is a releasing body 12 and the other end is a pressing body 15 with the winding spring 17 being slightly twisted. It is locked to.

  Further, the cover 18 covers the left end opening of the fixed case 4, and a push button 19 protruding leftward from the fixed case 4 is mounted on the left end of the pressing body 15 mounted on the left end of the fixed shaft 3 so as to be movable in the axial direction. Thus, the opening / closing device 20 is configured.

  Then, as shown in the perspective view of the electronic device such as the personal computer or the electronic dictionary in FIG. 5C, the fixing case 4 has a plurality of keys arranged on the upper surface. The push button 19 protrudes from the side of the fixed casing 21 and is fixed to the fixed casing 21 on which the operation section 21A is formed, and the movable case 8 is formed with a display section 22A such as a liquid crystal display element on the front surface. The electronic device is configured by being fixed to the movable casing 22 and pivotally supported by the opening / closing device 20 so that the movable casing 22 can be opened and closed with respect to the fixed casing 21.

  In the above configuration, as shown in FIG. 5A, when the movable casing 22 is closed with respect to the fixed casing 21, the opening / closing device 20 is as shown in the cam operation diagram of FIG. The movable cam 7 is elastically contacted with the lower inclined portion of the reversing cam 13 protruding from the fixed cam 2 in the direction of the movable cam 7, and the movable cam 7 is biased downward by the spring 10. The movable casing 22 to which the movable case 8 is attached is applied with an urging force in the closing direction, and the movable casing 22 is held in a closed state.

  When the push button 19 on the side surface of the fixed housing 21 is pressed with a finger from this closed state, the pressing cam 16 of the pressing body 15 to which the push button 19 is attached moves the release cam 14 as shown in FIG. By pressing, the release body 12 rotates downward while bending the winding spring 17, and the release cam 14 is disengaged from the left end of the reverse cam 13. Therefore, the reverse cam 13 moves to the left.

  For this reason, as shown in FIG. 8C, the movable cam 7 biased by the spring 10 elastically contacts the inclined portion on the upper side of the protruding portion 2A of the fixed cam 2 and rotates upward, so that the movable body 6 is moved. Since the force is biased in the upward opening direction, the force in the opening direction is applied to the movable case 8 and the movable casing 22 to which the movable case 8 is attached by this force.

  Then, as shown in FIG. 8D, in a state where the movable cam 7 is elastically slid on the inclined portion on the upper side of the protrusion 2A of the fixed cam 2 and then is elastically contacted with the flat portion 2B, FIG. As shown in FIG. 8E, the movable casing 22 is opened, for example, about 30 degrees with respect to the fixed casing 21, and the movable cam 7 moves the flat portion 2B of the fixed cam 2 as shown in FIG. After the elastic contact sliding, as shown in FIG. 5C, the movable housing 22 is held in a state of being opened around 135 degrees, for example.

  In the state where the movable cam 7 is elastically contacted with the flat portion 2B of the fixed cam 2 substantially perpendicularly, no force in the vertical direction, that is, the opening / closing direction is applied to the movable body 6 biased by the spring 10. Until the movable cam 7 is elastically contacted with the protrusion 2A shown in FIG. 8D, the movable housing 22 is pressed from the open state to the closing direction to display the liquid crystal display element or the like on the front surface. The angle can be set so that the portion 22A is easy to see.

  Further, when the movable casing 22 is further closed from this open state, the movable cam 7 is elastically slid downward on the fixed cam 2 in the opposite direction, and FIG. 8A and FIG. Returning to the state shown in a), the movable housing 22 is held in a closed state that is easy to carry.

  That is, when opening the movable casing 22 in addition to the opening / closing operation by hand, the movable cam 7 and the movable body 6 are rotated in the upward direction, that is, the opening direction by the pressing operation of the push button 19 to move the movable casing 22. A so-called one-touch open operation that opens with one touch is possible, and a so-called free-stop operation that allows the movable housing 22 to be held at a desired angle by hand for a predetermined angle, for example, between about 30 degrees and about 135 degrees is possible. It was configured as follows.

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

JP 2009-264527 A

  However, in the above-described conventional opening / closing device, when the push button 19 is pressed and the one-touch open operation is performed, an impact in the opening direction is applied to the movable casing 22 by the movable cam 7 biased by the spring 10. The device may fall down with momentum, and after opening the movable casing 22, when opening and closing the movable casing 22 by hand and performing a free stop operation, the force to hold at a desired angle is weak and unstable. There has been a problem that there is a case where it is difficult to hold.

  The present invention solves such a conventional problem, and an object of the present invention is to provide an opening / closing device capable of various operations with a good feel.

  In order to achieve the above object, the present invention provides inclined portions on the outer periphery of the movable cam and the inner periphery of the fixed case, and after the movable cam elastically contacts the flat portion of the fixed cam, the inclined portions of the movable cam and the fixed case are The opening / closing device is configured to be elastically contacted, and when the opening operation is performed, the inclined portion of the outer periphery of the movable cam elastically contacts the inclined portion of the inner periphery of the fixed case, and the biasing force in the opening direction is generated by the friction of the inclined portion. Therefore, the impact on the movable housing can be prevented, and the friction of the inclined portion can be reduced even when the movable cam is held between the predetermined angles where the movable cam is in elastic contact with the flat portion of the fixed cam. Thus, the movable casing can be securely held at a desired angle, and thus an opening / closing device capable of various operations with a good feel can be obtained.

  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 various operations with a good feel.

Sectional drawing of the switchgear by one embodiment of this invention Exploded perspective view Operation diagram of the cam Cross section Perspective view of electronic equipment Cross-sectional view of a conventional switchgear Exploded perspective view Operation diagram of the cam

  Embodiments of the present invention will be described below with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a sectional view of a switchgear according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof. In the figure, 1 is a substantially cylindrical shape made of a metal such as steel, copper alloy, sintered alloy, etc. The fixed body 1 is provided with a pair of fixed cams 2 formed at the right end of the fixed body 1 from a protruding portion 2A and a flat portion 2B protruding rightward.

  Reference numeral 3 denotes a substantially cylindrical and metal fixed shaft, and 24 denotes a substantially cylindrical and metal fixed case. The fixed body 1 is housed in the fixed case 24 and the fixed body 1 is disposed at the left end of the fixed shaft 3. The fixed case 24 is fixed to each other, and an inclined portion 24A is provided on the entire inner periphery of the right end of the fixed case 24.

  Reference numeral 26 denotes a substantially cylindrical metal movable body, which is disposed so as to be rotatable in the opening / closing direction and movable in the axial direction with respect to the fixed body 1, and a pair of movable cams projecting to the left at the left end. 27 is formed, and an inclined portion 27 </ b> A is provided on the outer periphery of the left end of the movable cam 27.

  Further, 8 is a substantially cylindrical and metallic movable case. A convex portion on the outer periphery of the movable body 26 is inserted into the outer peripheral groove portion, and the movable body 26 is movable in the axial direction with respect to the movable case 8 and in the rotational direction. Are housed in the movable case 8 so as to rotate together.

  A fixed case 24 is rotatably mounted in the left end opening of the movable case 8, the fixed shaft 3 is inserted through the movable body 26 and the movable case 8, and the right end is fixed to the outer surface of the movable case 8 by a retaining ring 9. It is attached to be rotatable.

  A steel wire spring 10 is wound in a coil shape and is mounted in a slightly bent state between the right side surface of the movable body 26 and the inner side surface of the movable case 8. It is biased in the direction of the left fixed body 1.

  Further, 11 is a substantially cylindrical and metallic reversal body, 12 is a substantially ring-shaped reversal body, a pair of reversing cams 13 protruding rightward at the right end of the reversal body 11, and a concavo-convex shape at the right end of the releasable body 12 The release cams 14 are respectively formed.

  The reversing body 11 and the releasing body 12 are respectively attached to the fixed case 24 so that the releasing body 12 can rotate so that the reversing body 11 can move in the axial direction.

  Further, 15 is a pressing body in which a pressing cam 16 protruding rightward is formed at the right end, 17 is a winding spring made of steel wire, one end to the release body 12 while the winding spring 17 is slightly twisted, and the other end Is locked to the pressing body 15.

  Further, the cover 18 covers the left end opening of the fixed case 24, and a push button 19 protruding leftward from the fixed case 24 is mounted on the left end of the pressing body 15 mounted to the left end of the fixed shaft 3 so as to be movable in the axial direction. Thus, the opening / closing device 30 is configured.

  Then, as shown in the perspective view of the electronic device such as a personal computer or an electronic dictionary in FIG. 5C, the opening / closing device 30 thus configured has a plurality of keys arranged on the upper surface. The push button 19 protrudes from the side of the fixed casing 21 and is fixed to the fixed casing 21 on which the operation section 21A is formed, and the movable case 8 is formed with a display section 22A such as a liquid crystal display element on the front surface. The electronic device is configured by being fixed to the movable casing 22 and pivotally supported by the opening / closing device 30 so that the movable casing 22 can be opened and closed with respect to the fixed casing 21.

  In the above configuration, as shown in FIG. 5A, when the movable casing 22 is closed with respect to the fixed casing 21, the opening / closing device 30 is as shown in the cam operation diagram of FIG. The movable cam 27 is elastically brought into contact with the lower inclined portion of the reversing cam 13 protruding from the fixed cam 2 in the direction of the movable cam 27, and the movable cam 27 is urged downward by the spring 10. The movable casing 22 to which the movable case 8 is attached is applied with an urging force in the closing direction, and the movable casing 22 is held in a closed state.

  When the push button 19 on the side surface of the fixed housing 21 is pressed with a finger from this closed state, the pressing cam 16 of the pressing body 15 to which the push button 19 is attached moves the release cam 14 as shown in FIG. By pressing, the release body 12 rotates downward while bending the winding spring 17, and the release cam 14 is disengaged from the left end of the reverse cam 13. Therefore, the reverse cam 13 moves to the left.

  For this reason, as shown in FIG. 3C, the movable cam 27 biased by the spring 10 elastically contacts the inclined portion on the upper side of the protrusion 2A of the fixed cam 2 and rotates upward, so that the movable body 26 is moved. Since the force is biased in the upward opening direction, the force in the opening direction is applied to the movable case 8 and the movable casing 22 to which the movable case 8 is attached by this force.

  Then, the movable housing 22 opens as the movable cam 27 elastically slides upward on the inclined portion on the upper side of the protruding portion 2A of the fixed cam 2, as shown in FIG. 3 (d). In the state where the movable cam 27 is elastically slid on the protrusion 2A and then is in elastic contact with the flat portion 2B, the inclined portions 27A on the outer periphery of the pair of movable cams 27 are fixed as shown in the cross-sectional view of FIG. The case 24 is elastically contacted with an inclined portion 24A provided on the entire inner periphery of the right end.

  When the movable cam 27 is elastically contacted with the flat portion 2B of the fixed cam 2 substantially perpendicularly, the movable body 26 biased by the spring 10 has almost no biasing force in the vertical direction, that is, in the opening / closing direction. Although not added, in addition to this, as described above, the force of rotating upward of the movable body 26 is further relaxed by the frictional force with which the inclined portions 27A and 24A are elastically contacted, as shown in FIG. The movable casing 22 is stopped and held with respect to the fixed casing 21 in a state of opening around 30 degrees, for example.

  Furthermore, when the movable cam 27 is brought into elastic contact with the flat portion 2B with a predetermined force and a predetermined frictional force is generated between the inclined portions 27A and 24A, the movable housing 22 is opened by hand as shown in FIG. As shown in e), the movable cam 27 slides and slides on the flat portion 2B of the fixed cam 2 and friction between the inclined portions 27A and 24A causes the movable casing 22 as shown in FIG. 5C. For example, the movable housing 22 can be stopped and held at a desired angle at which the display unit 22A such as a liquid crystal display element on the front surface is easy to see until it is opened around 135 degrees.

  When the finger is released from the push button 19 after the pressing operation, the pressing force to the pressing cam 16 disappears. Therefore, after the movable cam 27 elastically slides on the fixed cam 2 to a predetermined angle, for example, around 50 degrees. The release cam 14 biased by the winding spring 17 returns upward, the reverse cam 13 pressed at the left end moves rightward, and each cam returns to its original position.

  Also, from this open state, when the movable casing 22 is pressed from the opened state to the closing direction and closed to a predetermined angle, the movable cam 27 elastically contacts the fixed cam 2 downward, contrary to the above. In addition to sliding, the inclined portions 27A and 24A are separated, returning to the state shown in FIG. 3A and FIG. 5A, and the movable housing 22 being held in a closed state that is easy to carry.

  That is, when opening the movable casing 22 in addition to the opening / closing operation by hand, the movable cam 27 and the movable body 26 are rotated in the upward direction, that is, the opening direction by the pressing operation of the push button 19 to move the movable casing 22. For example, a so-called one-touch open operation that opens to about 30 degrees with one touch can be performed, and the movable housing 22 can be held at a desired angle by hand for a predetermined angle, for example, between about 30 degrees and about 135 degrees. A so-called free stop operation is possible.

  When the opening operation is performed by pressing the push button 19 in this way, after the movable cam 27 comes into elastic contact with the flat portion 2B from the projection 2A of the fixed cam 2, the inclined portion 27A of the movable cam 27 is fixed. The case 24 is elastically contacted with the inclined portion 24A, and the biasing force in the opening direction of the movable body 26 is relaxed by the friction between the inclined portions 27A and 24A, so that the movable housing 22 opens about 30 degrees with respect to the fixed housing 21, for example. In this state, it is stopped and held, so that the impact to the movable housing 22 is prevented and the device does not fall down.

  After that, even when the movable housing 22 is manually opened to an angle of, for example, about 135 degrees, the movable casing 22 is movable to the inclined portion 24A formed on the outermost periphery of the opening / closing device 30 on the entire inner periphery of the fixed case 24. The inclined portion 27A provided on the outer periphery of the cam 27 is elastically contacted, and the movable casing 22 can be held at a desired angle by a large rotational torque generated by the friction between the inclined portions 27A and 24A. The movable casing 22 can be securely held at the angle set.

  That is, after the inclined portions 27A and 24A are provided on the outer periphery of the movable cam 27 and the inner periphery of the fixed case 24, the movable housing 22 opens up to about 30 degrees, for example, and the movable cam 27 elastically contacts the flat portion 2B of the fixed cam 2. The movable cam 27 and the inclined portions 27A and 24A of the fixed case 24 are elastically contacted to perform the one-touch open operation of the movable housing 22, so that the movable body 26 is opened in the opening direction due to the friction between the inclined portions 27A and 24A. The urging force is alleviated to prevent the impact to the movable housing 22, and when the free stop operation is performed, the movable cam 27 is movable by the friction of the inclined portions 27A and 24A in addition to the elastic contact force to the flat portion 2B. Since the housing 22 can be securely held at a desired angle, various operations can be performed with a good feeling even when the movable housing 22 is opened and closed with a slight weight. .

  In the above description, in addition to the fixed body 1 and the movable body 26, various cams such as the reversing body 11, the release body 12, and the pressing body 15 are combined with the movable body 22 by pressing the push button 19. In the above description, the structure that allows the so-called one-touch open operation is described. However, only the fixed cam 2 of the fixed body 1 and the movable cam 27 of the movable body 26 are combined, and the opening and closing operations of the movable housing 22 are performed by hand. However, the present invention can be implemented.

  Thus, according to the present embodiment, the inclined portions 27A and 24A are provided on the outer periphery of the movable cam 27 and the inner periphery of the fixed case 24, and after the movable cam 27 is brought into elastic contact with the flat portion 2B of the fixed cam 2, it is movable. When the opening operation is performed by elastically contacting the inclined portions 27A and 24A of the cam 27 and the fixed case 24, the biasing force in the opening direction is relieved by the friction between the inclined portions 27A and 24A. Can be prevented, and when the movable cam 27 is held between the predetermined angles where the movable cam 27 is elastically contacted with the flat portion 2B of the fixed cam 2, the movable casing 27 is caused by friction between the inclined portions 27A and 24A. Since the body 22 can be reliably held at a desired angle, an opening / closing device capable of various operations with a good feel can be obtained.

  The switchgear according to the present invention has an advantageous effect of being able to obtain a variety of operations with a good touch, and is useful as a switchgear mainly used in various electronic devices.

DESCRIPTION OF SYMBOLS 1 Fixed body 2 Fixed cam 2A Projection part 2B Flat part 3 Fixed shaft 8 Movable case 9 Retaining ring 10 Spring 11 Reversing body 12 Release body 13 Reverse cam 14 Release cam 15 Press body 16 Press cam 17 Winding spring 18 Cover 19 Push button 21 Fixing Case 21A Operation part 22 Movable case 22A Display part 24 Fixed case 24A Inclined part 26 Movable body 27 Movable cam 27A Inclined part 30 Opening and closing device

Claims (1)

A fixed body in which a fixed cam is formed, a substantially cylindrical fixed case for storing the fixed body, a movable body in which a movable cam is formed, and a movable case for storing the movable body movably in the axial direction; After comprising a spring for urging the movable cam in the direction of the fixed cam, and providing an inclined portion on the outer periphery of the movable cam and the inner periphery of the fixed case, and after the movable cam elastically contacts the flat portion of the fixed cam An opening / closing device in which the movable cam and the inclined portion of the fixed case are in elastic contact.

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