JP5157621B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device mainly 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 been diversified and highly functional, there are an increasing number of devices that perform various operations by opening and closing a movable housing with respect to a fixed housing. There is also a demand for an opening / closing device capable of various operations with a good feel.

  An electronic device using such a conventional switchgear will be described with reference to FIG. 7 taking a mobile phone as an example.

  FIG. 7 is a perspective view of a mobile phone. In FIG. 7, reference numeral 1 denotes a substantially box-shaped fixed housing made of insulating resin, 2 denotes a movable housing, and the upper surface of the fixed housing 1 is formed from a plurality of keys. A voice input unit 1B such as the operated unit 1A and a microphone is provided, and a display unit 2A such as a liquid crystal display element and a voice output unit 2B such as a speaker are provided on the front surface of the movable housing 2.

  Reference numeral 3 denotes a substantially cylindrical opening / closing device formed of a plurality of cams, springs (not shown) and the like, and a push button 4 protruding from the side surface of the fixed housing 1 is attached to the left end of the opening / closing device 3. Yes.

  The opening / closing device 3 is mounted between the upper end of the fixed housing 1 and the lower end of the movable housing 2, and the opening / closing device 3 pivotally supports the movable housing 2 so that the fixed housing 1 can be opened and closed. Is configured.

  In the above configuration, when the push button 4 on the side of the fixed casing 1 is pressed from the state where the movable casing 2 is closed with respect to the fixed casing 1, the cams and springs in the opening / closing device 3 operate to move A force in the opening direction is applied to the housing 2, and the movable housing 2 is urged in the opening direction to perform an opening operation.

  In addition, when the movable casing 2 is pressed in the closing direction by hand and closed to a predetermined angle from this open state, a force in the closing direction is applied to the movable casing 2 by the operation of the cam or the spring in the opening / closing device 3. The movable housing 2 is held in a closed state that is easy to carry.

  That is, in addition to the opening / closing operation by hand, when the movable housing 2 is opened, a so-called one-touch open operation in which the movable housing 2 is opened by one touch by pressing the push button 4 is possible. there were.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2007-139182 A

  However, in the conventional switchgear described above, when the closing operation is continuously performed after the opening operation, the closing operation cannot be performed unless the opening operation is not performed until the angle is once increased to a predetermined angle, for example, about 160 degrees. For example, when it is desired to perform an opening / closing operation, there is a problem that the operation becomes complicated.

  The present invention solves such a conventional problem, and an object of the present invention is to provide an opening / closing device that can perform a closing operation even from a small opened state and can be easily and reliably operated.

In order to achieve the above object, the present invention provides a substantially cylindrical fixed body having a fixed cam formed on the outer periphery or end thereof, and is rotatably arranged with respect to the fixed body, and is movable on the inner periphery or end portion. A movable body in which a cam is formed, a spring that urges the movable cam in the direction of the fixed cam, and an axial cam, and a reversing cam formed on a surface facing the movable cam. It consists of a substantially cylindrical reversal body, and is provided on the outer periphery of the fixed body with an inwardly grooved portion that is connected to the fixed cam and through which the reversing cam is inserted at both ends. The direction of the movable cam from the fixed cam When the movable cam is elastically contacted with the reversing cam projecting toward the reversing cam and the movable cam is biased in the closing direction, and the reversing body is moved away from the movable body, the reversing body is moved when the reversing body moves. Is guided by the fixed body While moving, which the movable cams constituted the to switchgear as the movable member is urged in the opening direction by elastic contact slides on the fixed cam, by moving the inverted body when pressed by When performing the opening operation, the reversing cam is guided through both ends of the groove of the fixed body, and the reversing body is guided and moved by the fixed body, so that the width of the reversing cam can be made small and movable. After the cam has been elastically contacted with the fixed cam, for example, after opening up to around 50 degrees, the closing operation can be continued, so the closing operation can be performed even from a small open state, and easy and reliable operation is possible. It has an effect that a possible opening / closing device can be obtained.

  As described above, according to the present invention, it is possible to achieve an advantageous effect that it is possible to realize an opening / closing device that can be closed and operated easily and reliably even from a small open state.

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

  These drawings are partially enlarged in size for easy understanding of the configuration.

(Embodiment 1)
The first aspect of the present invention will be described using the first embodiment.

  FIG. 1 is a sectional view of a switchgear according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, in which 11 is a substantially cylindrical shape, such as a metal such as steel, copper alloy, sintered alloy, etc. The fixed body 11 is made of a pair of grooves 11A that are recessed inward and a pair of fixed cams 12 that protrude outward.

  Reference numeral 13 denotes a metal fixed shaft, and 14 denotes a metal fixed case. A pair of concave and convex auxiliary cams 15 are formed on the outer periphery of the right end portion of the fixed case 14, and A fixed case 11 is fixed to the left end portion of the fixed body 11.

  Reference numeral 16 denotes a substantially ring-shaped 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 11, and has a pair of pin-shaped movable cams on the inner periphery. 17 is formed in a protruding manner, and a pair of concave and convex auxiliary cams 18 are formed on the outer periphery of the left end portion.

  Reference numeral 19 denotes a substantially cylindrical and metal movable case. A pair of groove portions 19A are provided on the outer periphery, and a pair of convex portions 16A protruding from the outer periphery of the movable body 16 are inserted into the groove portion 19A. Is movable in the axial direction with respect to the movable case 19, and is configured to rotate integrally in the rotational direction.

  Further, the fixed case 14 is rotatably mounted in the left end opening of the movable case 19, the fixed portion 14 </ b> A protrudes leftward, the fixed shaft 13 is inserted through the movable case 19, and the right end is the retaining ring 20. Thus, the movable case 19 is rotatably mounted on the outer surface.

  Reference numeral 21 denotes a coil-shaped spring made of steel wire, which is mounted in a slightly bent state between the right side surface of the movable body 16 and the inner side surface of the movable case 19, and by this spring 21, the movable body 16 is fixed to the left side. It is biased toward the body 11.

  Further, 22 is a substantially cylindrical and metal reversal body, 23 is a substantially ring-shaped release body, and a pair of concave and convex reversing cams 24 are provided at the right end portion of the reversal body 22. Concave and convex release cams 25 are respectively formed.

  Further, a pair of reversing cams 24 are inserted into the pair of grooves 11A of the fixed body 11, and the reversing body 22 is guided by the outer periphery of the fixed body 11 so as to be movable in the axial direction. The fixed case 14 is attached.

  Reference numeral 26 denotes a pressing body in which a concave and convex pressing cam 27 is formed at the right end portion, and 28 denotes a steel wire winding spring. One end of the winding spring 28 is slightly twisted and the other end is the releasing body 23. While being locked by the pressing body 26, the pressing body 26 is attached to the left end of the fixed shaft 13 so as to be movable in the axial direction, and protrudes leftward from the fixed case 14 to constitute an opening / closing device 30.

  The opening / closing device 30 configured as described above is, for example, as shown in the perspective view of the mobile phone in FIG. The movable case 19 is fixed to the fixed casing 1 on which the voice input unit 1B is formed, and the movable case 19 is fixed to the movable casing 2 on the front surface of which the display unit 2A such as a liquid crystal display element and the voice output unit 2B such as a speaker are formed. The

  A push button 4 is attached to the pressing body 26, and the push button 4 protrudes from the side surface of the fixed housing 1, and the lower end of the movable housing 2 is moved relative to the upper end of the fixed housing 1 by the opening / closing device 30 as described above. An electronic device is configured by being pivotally supported so as to be opened and closed.

  In the above configuration, when the movable casing 2 is closed with respect to the fixed casing 1, the opening / closing device 30 is as shown in the cam operation diagram of FIG. 3A and the perspective view of the main part of FIG. Furthermore, the movable cam 17 is in elastic contact with the inclined portion on the right side of the reversing cam 24 projecting from the fixed cam 12 toward the movable cam 17, and the movable body 16 is urged by the spring 21 in the closing direction in the right direction. The movable casing 1 to which the movable case 19 is attached is biased in the closing direction, and is held in a closed state.

  When the push button 4 on the side surface of the fixed housing 1 is pressed with a finger from this closed state, the pressing cam 27 of the pressing body 26 to which the push button 4 is attached presses the release cam 25, and the release cam 25 becomes a winding spring. 3B and FIG. 4B, the release cam 25 is disengaged from the lower end of the reverse cam 24, so that the reverse cam 24 moves downward in the groove 11A. Moving.

  For this reason, as shown in FIG. 3C and FIG. 4C, the movable cam 17 biased by the spring 21 is elastically contacted with the left inclined portion of the fixed cam 12 and rotated leftward to move. Since the body 16 is biased in the opening direction in the left direction, a force in the opening direction is applied to the movable casing 2 by this force.

  When the finger is released from the push button 4 after the pressing operation, the pressing force to the pressing cam 27 disappears, so that the movable cam 17 has a predetermined angle, for example, as shown in FIGS. 3D and 4D. After elastically sliding on the fixed cam 12 to around 50 degrees, the release cam 25 urged by the winding spring 28 returns to the left, and the reversing cam 24 whose lower end is pressed against the upper surface is brought into the groove 11A. The guide cams 27 that are guided upward and whose upper end is pressed by the lower surface move downward and return to their original positions.

  While the movable cam 17 urged by the spring 21 slides elastically on the left inclined portion of the fixed cam 12 and rotates leftward, the movable body 16 and the movable case 19 are opened leftward. The force in the opening direction continues to be applied to the movable housing 2, and thereafter the auxiliary cam 18 of the movable body 16 is fixed to the fixed case as shown in FIGS. 3 (e) and 4 (e). 14, the auxiliary cam 18 is elastically slid on the auxiliary cam 15, and the movable casing 2 is fixed to the fixed casing 1, as shown in FIGS. 3 (f) and 4 (f). Is held at a predetermined angle, for example, close to 180 degrees where it is easy to make a call or the like.

  In addition, when the movable casing 2 is pressed in the closing direction by hand and closed to a predetermined angle from this open state, the movable cam 17 is elastically slid on the fixed cam 12, contrary to the above, and FIG. Returning to the state shown in a) and FIG. 4A, the movable housing 2 is held in a closed state that is easy to carry.

  That is, when opening the movable casing 2 in addition to the opening / closing operation by hand, the release cam 25 is rotated by the pressing operation of the push button 4 to move the reversing cam 24 in the vertical direction, that is, in the axial direction. A so-called one-touch open operation that opens 2 with one touch is possible.

  When the push button 4 is pressed and the reversing body 22 is moved to perform the opening operation, the reversing cam 24 of the reversing body 22 is moved up and down while being guided in both ends of the groove 11A of the fixed body 11. Therefore, even if the width of the reversing cam 24 is reduced to a certain extent, for example, as described above, the width of the reversing cam 24 is prevented from being damaged or deformed even when the width of the reversing cam 24 is about 50 degrees. It is configured so that reliable operation is possible.

  Further, by forming the width of the reversing cam 24 to be small in this way, the reversing body 22 moves and the movable cam 17 comes off from the reversing cam 24 and is elastically slid on the fixed cam 12. For example, after the movable cam 17 rotates in the opening direction up to about 50 degrees, the closing operation can be performed continuously.

  That is, when performing the closing operation after the opening operation, there is no need to open the movable housing 2 once to a predetermined angle, for example, about 160 degrees, and the elastic contact position of the movable cam 17 is fixed to the fixed cam 12. For example, when the movable casing 2 is moved and opened about 50 degrees, the closing operation can be continuously performed.

  In order to perform the closing operation even from a smaller opening angle, if the circumferential width dimension of the reversing cam 24 is further reduced, the closing operation can be continued even from an opening angle of 10 degrees or 20 degrees, for example. However, in order to maintain the mechanical strength of the reversing cam 24 and allow the movable casing 2 to be closed from a state where it is opened to some extent, it is opened 40 to 100 degrees. The width dimension of the reversing cam 24 is preferably formed so that the movable cam 17 moves from the reversing cam 24 to the fixed cam 12 in this state.

  As described above, according to the present embodiment, when the reversing body 22 is moved by the pressing operation, the reversing body 22 is guided by the fixed body 11 and moved in the axial direction, and the movable cam 17 is in elastic contact with the fixed cam 12. Thus, the width dimension of the reversing cam 24 can be made small, and after the movable cam 17 is opened to the angle after the elastic contact with the fixed cam 12, for example, about 50 degrees, the closing operation can be continuously performed. Therefore, it is possible to obtain an opening / closing device that can be closed and operated easily and reliably even from a small open state.

(Embodiment 2)
A second embodiment of the present invention will be described using the second embodiment.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure of Embodiment 1, and detailed description is abbreviate | omitted.

  FIG. 5 is a cross-sectional view of a switchgear according to a second embodiment of the present invention, in which a pair of grooves 11A recessed inward and outward are formed on the outer periphery of a substantially cylindrical fixed body 11. The pair of protruding fixed cams 12 is formed, and the pair of auxiliary cams 15 is formed on the outer periphery of the right end of the fixed case 14 as in the case of the first embodiment.

  Further, the fixed body 11 is fixed to the intermediate portion of the fixed shaft 13 and the fixed case 14 is fixed to the left end portion, respectively, as in the case of the first embodiment. A pair of movable cams 37 projecting to the left are provided at the left end of the substantially disc-shaped movable body 36 that is arranged so as to be rotatable in the axial direction and movable in the axial direction.

  The movable body 36 is movable in the axial direction with respect to the movable case 19 and is formed so as to rotate integrally in the rotation direction. In the case of the first embodiment, the fixed shaft 13 is inserted into the movable case 19 and the right end is rotatably attached to the outer surface of the movable case 19 by the retaining ring 20. It is the same.

  In addition, a pair of concavo-convex inverting cams 34 is formed at the right end of the reversing body 32, and a concavo-convex releasing cam 25 is formed at the right end of the releasing body 23, or the pair of inverting cams 34 is fixed. It is inserted into the pair of grooves 11A of the body 11, the reversing body 32 is guided by the outer periphery of the fixed body 11, and can be moved in the axial direction, and the release bodies 23 are rotatably mounted on the fixed cases 14, respectively. This is similar to the case of the first embodiment.

  The movable body 36 is biased in the direction of the left stationary body 11 by the coiled spring 21 mounted in a slightly bent state between the right side surface of the movable body 36 and the inner side surface of the movable case 19. The movable cam 37 at the left end elastically contacts the lower inclined portion of the reversing cam 34, and the movable case 19 is urged in the closing direction.

  Further, as in the case of the first embodiment, one end is locked to the release body 23 and the other end is locked to the pressing body 26 having the pressing cam 27 formed on the right end thereof with the winding spring 28 slightly twisted. At the same time, the pressing body 26 is attached to the left end of the fixed shaft 13 so as to be movable in the axial direction, and protrudes leftward from the fixed case 14 to constitute the opening / closing device 40.

  That is, in the present embodiment, the movable cam 37 is provided at the left end portion of the substantially disc-shaped movable body 36, and the movable cam 37 is urged to the left by the spring 21, so that the reverse cam 34 and the fixed cam 12 are moved. It is formed so as to be elastic.

  Note that the opening / closing device 40 configured in this way has a fixed case 14 fixed to the fixed housing 1 and a movable case 19 fixed to the movable housing 2, for example, as shown in the perspective view of FIG. In the case of the first embodiment, the push body 4 is attached to the pressing body 26 and the movable housing 2 is pivotally supported by the opening / closing device 40 so that the movable housing 2 can be opened and closed. It is the same.

  In the above configuration, when the movable casing 2 is closed with respect to the fixed casing 1, the opening / closing device 40 moves from the outer periphery of the fixed cam 12 to the movable cam 37 as shown in the perspective view of the main part in FIG. Since the movable cam 37 is elastically contacted with the inclined portion on the right side of the reversing cam 34 protruding in the direction and the movable body 36 is biased by the spring 21 in the rightward closing direction, the movable case 19 is mounted. The casing 1 is biased in the closing direction, and the movable casing 1 is held in a closed state.

  When the push button 4 on the side surface of the fixed housing 1 is pressed with a finger from this closed state, the pressing cam 27 of the pressing body 26 to which the push button 4 is attached presses the release cam 25, and the release cam 25 becomes a winding spring. Since the release cam 25 is disengaged from the lower end of the reverse cam 34 while being bent, the reverse cam 34 is guided at both ends into the groove 11A of the fixed body 11 as shown in FIG. Move down.

  For this reason, as shown in FIG. 6C, the movable cam 37 biased by the spring 21 rotates in the left direction while elastically contacting the left inclined portion of the fixed cam 12, and the movable body 36 is moved in the left direction. Since the force is applied in the opening direction, a force in the opening direction is applied to the movable casing 2 by this force.

  When the finger is released from the push button 4 after the pressing operation, the pressing force on the pressing cam 27 disappears, so that the release cam 25 urged by the winding spring 28 moves leftward as shown in FIG. The reversing cam 34 whose lower end is pressed against the upper surface is guided by the groove 11A, moves upward, and returns to the original position.

  While the movable cam 37 slides elastically on the left inclined portion of the fixed cam 12 and rotates to the left, the movable body 36 and the movable case 19 are urged in the leftward opening direction to move. The force in the opening direction continues to be applied to the housing 2, and thereafter, as shown in FIG. 6 (e), the movable cam 37 slides elastically on the fixed cam 12 to a predetermined position. It is held in a state where it is opened with respect to the fixed housing 1 at a predetermined angle, for example, near 180 degrees where a telephone call or the like is easily performed.

  Also, from this open state, when the movable casing 2 is pressed by hand and closed to a predetermined angle, the movable cam 37 is elastically slid on the fixed cam 12 and the reversing cam 34, contrary to the above. Returning to the state shown in FIG. 6A, the movable casing 2 is held in a closed state that is easy to carry.

  That is, when opening the movable casing 2 in addition to the opening / closing operation by hand, the release cam 25 is rotated by the pressing operation of the push button 4 and the reversing cam 34 is moved in the vertical direction, that is, the axial direction. It is configured so that a so-called one-touch open operation is possible in which 2 is opened with one touch.

  At this time, also in the present embodiment, when the push button 4 is pressed and the reversing body 32 is moved to perform the opening operation, the reversing cam 34 of the reversing body 32 passes through the groove 11A of the fixed body 11 at both ends. The movable cam 37 is elastically slid on the fixed cam 12 as shown in FIG. 6 (d) because the width of the reversing cam 34 can be reduced by being guided and formed to move up and down. For example, after the movable cam 37 is rotated in the opening direction up to about 50 degrees, the closing operation can be continuously performed.

  That is, when performing the closing operation after performing the opening operation, it is not necessary to open the movable casing 2 once to a predetermined angle, for example, about 160 degrees, and the elastic contact position of the movable cam 37 is changed from the reversing cam 34. For example, when the movable casing 2 moves to the fixed cam 12 and is opened about 50 degrees, the closing operation can be continuously performed.

  As described above, according to the present embodiment, when the reversing body 32 is moved by the pressing operation, the reversing body 32 is guided by the fixed body 11 and moved in the axial direction, and the movable cam 37 is brought into elastic contact with the fixed cam 12. Thus, the width dimension of the reversing cam 34 can be made small, and after the movable cam 37 opens to the angle after the elastic contact with the fixed cam 12, for example, about 50 degrees, the closing operation can be continuously performed. Therefore, it is possible to obtain an opening / closing device that can be closed and operated easily and reliably even from a small open state.

That is, as in the present embodiment, even when the movable cam 37 is provided not at the inner periphery of the movable body but at the left end portion of the movable body 36, the same effect as in the case of the first embodiment can be obtained. Can do.

  In the above description, the movable cam 37 is formed at the left end portion of the movable body 36 and the movable cam 37 is elastically contacted with the reversing cam 34 and the fixed cam 12 on the outer periphery of the fixed body 11. The present invention can also be implemented by a configuration in which a fixed cam protrudes from the right end portion of the fixed body 11 and the movable cam 37 at the left end portion of the movable body 36 is elastically contacted thereto.

  The switchgear according to the present invention can perform a closing operation even from a small open state, and can obtain a device that can be easily and reliably operated, and is useful as a switchgear mainly used in various electronic devices.

Sectional drawing of the switchgear by the 1st Embodiment of this invention Exploded perspective view Operation diagram of the cam Perspective view of the main part Sectional drawing of the switchgear by the 2nd Embodiment of this invention Perspective view of the main part Perspective view of mobile phone

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed housing | casing 1A Operation part 1B Audio | voice input part 2 Movable housing | casing 2A Display part 2B Audio | voice output part 4 Push button 11 Fixed body 11A Groove part 12 Fixed cam 13 Fixed shaft 14 Fixed case 14A Fixed part 15 Auxiliary cam 16, 36 Movable body 16A Convex part 17, 37 Movable cam 18 Auxiliary cam 19 Movable case 19A Groove part 20 Retaining ring 21 Spring 22, 32 Inverted body 23 Release body 24, 34 Inverted cam 25 Release cam 26 Press body 27 Press cam 28 Winding spring 30, 40 Opening / closing device

Claims (1)

Was outside circumferential or substantially cylindrical stationary member fixed cam on the end portion is formed, while being rotatably arranged relative to the stationary member, a movable movable cams on the inner periphery or the end portion is formed A body, a spring for urging the movable cam in the direction of the fixed cam, and a substantially cylindrical reversal body that is arranged so as to be movable in the axial direction and has a reversing cam formed on a surface facing the movable cam. The reversing cam that protrudes in the direction of the movable cam from the fixed cam is provided on the outer periphery of the fixed body and is provided with an inwardly recessed groove portion through which the reversing cam is guided and inserted at both ends. When the movable cam is elastically contacted to be biased in the closing direction and the reversing body is moved away from the movable body , the reversing body guides the fixed body when the reversing body moves. And the movable cam moves upward. And elastic contact slides on a fixed cam switchgear is biased the movable body in the opening direction.

Images