JP2007311098A - Rotary operation type electric component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary operation type electric component capable of rotating operation without contact of resin members themselves. <P>SOLUTION: The rotary operation type electric component comprises an operating body 1 capable of rotary operation and a case to support the operating body in free rotation. The case houses a rotor 43 to fix the operating body and a support part 61 to support the rotor in free rotation and the rotor is made capable of rotation to the support part through a rolling bearing. Further, the support part 61 is formed as a cylindrical wall part at the bottom of the case, and a recessed portion 62 opened toward the outer periphery direction is formed at the circumference of the wall part, and a cylindrical step part 84 is formed at the lower part of the rotor, and the rolling bearing is constituted by supporting a rolling member 70 between the recessed part and the step part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a rotary operation type electric component in which an operation body is rotatably held in a casing, and more particularly to a rotary operation type electric component that receives rotation of the operation body by a configuration of a rolling bearing.
About.

2. Description of the Related Art Conventionally, a rotary operation type electric component that can perform a rotary operation is known. Such a rotary operation type electric component is used for an operation for selecting a menu or a mode in an electronic device such as a mobile phone, and is provided with an operation body that can be freely rotated. The operation body is formed so that the outer peripheral surface is substantially circular, and is attached to and fixed to a rotary operation type electric component so as to be freely rotatable. As such a rotary operation type electric component, there is one as disclosed in Patent Document 1, for example.
JP 2003-115237 A

  However, in the conventional rotary operation type electrical component, the operating body is held in a freely rotatable manner in direct contact with the casing. Both the operation body and the casing are made of a resin material, and friction is generated between the operation body and the rotation of the operation body. For this reason, the operation feeling due to the rubbing feeling is deteriorated. Further, the friction between the resin materials hinders the extension of the service life of the parts.

  This invention is made | formed in view of the said subject, and it aims at providing the rotation operation type electric component which can perform rotation operation, without resin materials contacting.

In order to solve the above problems, a rotary operation type electrical component according to the present invention is a rotary operation type electrical component having an operation body that can be rotated and a casing that rotatably holds the operation body.
The housing houses a rotating body that fixes the operating body and has a holding portion that rotatably holds the rotating body, and the rotating body is rotatable with respect to the holding portion via a rolling bearing. It is configured as a feature.

  Further, in the rotary operation type electric component according to the present invention, the holding portion is formed as a cylindrical wall portion on the bottom surface of the casing, and a concave portion opening toward the outer circumferential direction of the peripheral portion of the wall portion. A cylindrical step portion is formed on the lower surface of the rotating body, and a rolling member is held between the concave portion and the step portion to constitute the rolling bearing. Yes.

  Furthermore, the rotary operation type electric component according to the present invention is characterized in that a step portion is formed on the bottom surface of the concave portion and the mounting surface of the rolling member is formed one step lower.

  Furthermore, in the rotary operation type electric component according to the present invention, the holding portion is formed as a cylindrical wall portion on the bottom surface of the casing, and a concave shape opening toward the inner circumferential direction on the lower surface of the rotating body. And the rolling bearing is configured by holding a rolling member between the concave portion and the outer peripheral surface of the wall portion.

  According to the rotary operation type electrical component according to the present invention, the casing fixes the operating body and houses the rotatable rotating body, and has a holding portion for holding the rotating body, and the rotating body rolls with respect to the holding portion. Since the rotation body can be rotated through the bearing, the rotation body can be rotated without being in direct contact with the housing, so that the operation body can be smoothly operated and the operation feeling can be improved. Further, since the wear between the resin materials can be prevented, the life of the parts can be extended.

  Further, according to the rotary operation type electric component according to the present invention, a concave portion that opens toward the outer peripheral direction is formed on the peripheral surface of the wall portion constituting the holding portion, and a cylindrical shape is formed on the lower surface of the rotating body. The stepped portion is formed, and the rolling member is configured by holding the rolling member between the concave portion and the stepped portion, whereby the rotating body can be supported with a simple configuration via the rolling member.

  Furthermore, according to the rotary operation type electric component according to the present invention, the step portion is formed on the bottom surface of the concave portion, and the mounting surface of the rolling member is formed one step lower, so that the rolling member can be assembled at the time of assembly. Can be easily disposed at a predetermined position, and the workability of assembly can be improved.

  Furthermore, according to the rotary operation type electric component according to the present invention, the lower surface of the rotating body has a concave portion that opens toward the inner circumferential direction, and the rolling member is rolled between the concave portion and the outer circumferential surface of the wall portion. By configuring the rolling bearing while holding the moving member, the rotating body can be supported by a simple configuration via the rolling member.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a composite operation type electric component capable of performing both a rotation operation and a tilting operation in multiple directions and a composite operation operation body used for the operation are shown as a kind of the rotation operation type electric component. FIG. 1 shows an exploded perspective view of the operation body for composite operation in the present embodiment. As shown in this figure, the operating body for composite operation 1 according to the present embodiment includes a rotary operation member 10 formed in a substantially disk shape, and a press formed by forming a protruding pressing portion 30 in the circumferential direction of the upper surface. The operation member 11 is overlapped in the vertical direction. The operation body for composite operation 1 is attached to a composite operation type electrical component, and can perform a rotation operation by the rotation operation member 10 and a tilt operation in multiple directions by the pressing operation member 11. is there.

  First, the rotation operation member 10 constituting the composite operation body 1 will be described. The rotation operation member 10 is formed so that the outer peripheral surface 20 has a substantially circular shape, and can be rotated by rotating the outer peripheral surface 20 in the circumferential direction. An opening 21 is formed at the center of the rotation operation member 10. The opening 21 is provided to expose a push button switch provided in the composite operation type electrical component to the outside.

  Further, the rotation operation member 10 is formed with a plurality of through holes 22 in the circumferential direction. The through hole 22 is formed to correspond to the pressing portion 30 formed on the upper surface of the pressing operation member 11, and is provided for engaging the pressing portion 30 and projecting upward from the upper surface of the rotation operating member 10. It is done.

  In FIG. 2, the perspective view showing the lower surface side of the rotation operation member 10 is shown. As shown in this figure, an edge 23 is formed on the lower surface of the rotary operation member 10 so as to surround the opening 21. Further, the edge 23 is fitted with two fitting portions facing each other. 24 is formed, and positioning portions 25 are formed at positions different from the fitting portions 24 by 90 degrees in the circumferential direction. The fitting portion 24 and the positioning portion 25 are both attachment portions for the composite operation type electrical component, and the fitting portion 24 functions as a retaining member from the composite operation type electrical component, and the positioning portion 25 is a rotation operation member. It functions as a fixed part for 10 rotation directions.

  Next, the pressing operation member 11 that constitutes the composite operation body 1 will be described. As shown in FIG. 1, the pressing operation member 11 has a plurality of circumferentially pressing portions 30 formed on the upper surface as described above. An opening 31 is formed in the central portion of the pressing operation member 11. Like the opening 21 of the rotation operation member 10, the push button switch of the composite operation type electrical component is exposed to the outside, and the rotation operation member 10. A space for securing the lower surface to the composite operation type electrical component is secured.

  The rotation operation member 10 and the pressing operation member 11 are both formed of a synthetic resin material, but the pressing operation member 11 is formed of a material having higher elasticity than the rotation operation member 10. Since the rotation operation member 10 performs rotation operation in the circumferential direction, the rotation operation member 10 is required to have high rigidity. On the other hand, the pressing operation member 11 is tilted in any one of multiple directions. Therefore, it can be tilted only in the direction to input by having elasticity, and it can prevent simultaneous input in the other direction.

  Further, a space between adjacent pressing portions 30 of the pressing operation member 11 is formed as a thin connecting portion 32. Thus, by making the connection part 32 of the press operation member 11 into the thin shape, it can make it easy to deform | transform between the press parts 30, and can make tilting operation of only one direction more reliable.

  FIG. 3 shows a plan view of the pressing operation member 11. As shown in this figure, an inner notch 33 is formed on the inner peripheral side where the opening 31 is formed in the connecting portion 32 that constitutes between the pressing portions 30. Further, an outer notch 34 is formed on the outer peripheral side. The inner notch portion 33 and the outer notch portion 34 are formed so that the space between the pressing portions 30 is narrow, so that the space between the pressing portions 30 can be further easily deformed, and the tilting operation only in one direction can be performed. It can be made more reliable.

  In FIG. 4, the perspective view of the pressing operation member 11 of another form is shown. As shown in this figure, the inner notch 33 and the outer notch 34 may not be formed in the connecting portion 32 as long as a certain degree of elasticity can be secured.

  FIG. 5 shows a perspective view of the operation body for composite operation 1 in which the rotation operation member 10 and the pressing operation member 11 are combined. As shown in this figure, the pressing operation member 11 provided on the lower surface side of the rotation operation member 10 is engaged with a plurality of pressing portions 30 provided in the circumferential direction through the through holes 22 of the rotation operation member 10. , Projecting upward from the upper surface of the rotary operation member 10.

  For this reason, when the rotation operation member 10 is rotated in the circumferential direction, the pressing operation member 11 rotates accordingly. On the other hand, when the pressing portion 30 protruding from the pressing operation member 11 is pressed and tilted in one direction, the pressing operation member 11 is tilted while the periphery of the pressing portion 30 is deformed, but the rotation operating member 10 is tilted. Keep it as it is.

  Next, the housing of the composite operation type electrical component to which the composite operation body 1 is attached will be described. FIG. 6 is an exploded perspective view of the housing of the composite operation type electrical component in the present embodiment. As shown in this figure, the casing is provided with a substrate 41 having a contact portion 50 on the upper surface thereof on a metal fixing plate 40, and a housing 42 is provided on the upper surface to accommodate various components. A cover body 45 is provided on the upper surface, and detects a rotation operation and a tilting operation from the composite operation body 1 attached to the upper part, and a pressing operation from the central pressing body 2. Further, the rotation operation is received by the configuration of a rolling bearing using the ball 70.

  The substrate 41 is composed of a flexible substrate, and the contact portions 50 on the upper surface are arranged at the four corners and the center portion, respectively. Further, a lead-out portion 51 is formed so as to extend from one side of the substrate 41 so that the output can be taken out to the outside.

  The housing 42 is formed of a resin material and has a concave accommodating portion 60 in the center. A circular wall portion 61 is formed in a raised shape at the central portion of the housing portion 60, and a central hole portion 63 penetrating to the lower surface of the housing 42 is formed on the inner surface side, and a bearing is formed on the outer surface side. A plurality of concave ball receiving portions 62 for receiving the balls 70 to be stored are formed in the circumferential direction. A central rod 46 is accommodated in the central hole 63, and the central rod 46 is pressed in accordance with the pressing operation of the central pressing operation body 2, and presses the central contact portion 50 on the substrate 41.

  In addition, a conductive pattern 65 is provided on the lower surface of the accommodating portion 60 and constitutes a part of a rotary encoder that detects a rotation operation. Further, a concave spring accommodating portion 66 is formed on the side surface of the accommodating portion 60, and an engagement / disengagement biasing spring 72 is accommodated therein. The engagement / disengagement urging spring 72 is provided to create a click feeling via the engagement / disengagement ball 71 with respect to the rotating portion that rotates in accordance with the rotation operation of the composite operation operation body 1.

  Peripheral hole portions 64 penetrating from the upper surface to the lower surface are formed at the four corners of the housing 42. The peripheral hole portion 64 is formed corresponding to the position of the peripheral contact portion 50 disposed on the substrate 41, and the peripheral rod 47 that presses the contact portion 50 is accommodated therein. The peripheral rod 47 accommodated in the peripheral hole 64 protrudes upward from the upper surface of the housing 42 and is pressed in accordance with the tilting operation of the composite operation body 1. Press one.

  A housing plate 60 of the housing 42 houses a rotating plate 43 that rotates in accordance with the rotating operation of the composite operating body 1. A terminal plate 44 having a plurality of terminal portions 44 a in the circumferential direction is attached to the lower surface of the rotating plate 43. The terminal plate 44 rotates together with the rotating operation of the rotating plate 43, so that the terminal portion 44a contacts and separates from the conductive pattern 65 formed on the lower surface of the housing portion 60, thereby constituting a rotary encoder that detects a rotation operation.

  The rotating plate 43 is formed in a substantially disk shape, and the outer peripheral surface is formed in a wave shape that is periodically uneven, forming a cam portion 80. As the rotating plate 43 rotates, the cam unit 80 repeatedly engages and disengages via the engagement / disengagement biasing spring 72 provided in the spring accommodating portion 66 and the engagement / disengagement ball 71, thereby providing a click feeling in the rotation operation. Create.

  In addition, an opening 81 is formed at the center of the rotating plate 43, and the central pressing operation body 2 is penetrated, and a circular wall 61 and a ball 71 whose inner peripheral surface is formed in the housing 60 of the housing 42. Opposite through. That is, the rotating plate 43 is supported by the balls 71 with respect to the housing 42 and is disposed so as to be rotatable in the circumferential direction with respect to the housing 42.

  Further, a protruding fitting piece 82 and a positioning piece 83 are provided on the periphery of the upper surface of the rotating plate 43 so as to face each other. The fitted piece 82 is to be fitted to the fitting portion 24 formed on the lower surface of the rotary operation member 10 of the composite operation operating body 1. Further, the positioning piece 83 is engaged with a positioning portion 25 formed on the lower surface of the rotation operation member 10 of the composite operation operating body 1.

  As shown in FIG. 2, the fitting portion 24 of the operation body for composite operation 1 is arranged so that two fitting pieces 24a projecting in a substantially L shape are opposed to each other. The mated piece 82 of the plate 43 has a fitting projection 82a protruding outward at the tip, and the fitting piece 24a is fitted to the fitting projection 82a, so that the combined operation is performed. The rotary operation member 10 of the operating body 1 is firmly fixed in the vertical direction with respect to the rotary plate 43.

  Further, as shown in FIG. 2, the positioning portion 25 of the composite operation body 1 has a shape in which the inner peripheral surface of the edge portion 23 is cut out in a square shape, and a rotating plate 43 corresponding thereto. The position stop piece 83 is formed of a substantially rectangular thin plate-like protrusion, and the position control piece 83 engages with the position stop portion 25, whereby the rotation operation member 10 of the operation body for composite operation 1 is attached to the rotation plate 43. On the other hand, it is firmly fixed in the circumferential direction.

  The cover body 45 is formed of a metal plate material. An opening 45a is formed at the center, and the fitting portion 24 and the positioning portion formed on the lower surface of the rotary operation member 10 of the composite operation operation body 1. 25 and the center pressing operation body 2 are inserted. In addition, through holes 45b are formed at the four corners, respectively, and the peripheral rod 47 is exposed to the top. Furthermore, there are four engaged portions 45c projecting downward from the edge portions, and these are engaged with engaging portions 67 formed on the side surfaces of the housing 42, respectively, so that the cover body 45 is accommodated in the housing. 42 is fixed.

  FIG. 7 shows a perspective view of the housing. As shown in this figure, in the state in which the respective parts are assembled, the upper surface of the rotating plate 43 is exposed from the opening 45a of the cover body 45, and the mated piece 82 and the positioning stopper formed on the exposed upper surface. The fitting part 24 and the positioning part 25 formed on the rotary operation member 10 of the composite operation operating body 1 are fixed to the piece 83. Further, the peripheral rod 47 projects upward from the upper surface of the cover body 45, and when the pressing operation body 2 of the operation body for composite operation 1 is tilted, one of them is pressed on the lower surface thereof.

  FIG. 8 is a plan view of a composite operation type electrical component to which the composite operation operating body 1 is attached. As shown in this figure, the operation body for composite operation 1 is attached so as to substantially cover the upper surface of the housing. The central pressing operation body 2 is attached to the opening 21 formed in the rotary operation member 10 of the composite operation body 1. Since the composite operation operating body 1 is fixed to a rotating plate 43 that is rotatable with respect to the housing 42, it is possible to rotate the housing 42.

  FIG. 9 is a cross-sectional view taken along the line AA in FIG. As shown in this figure, the central rod 46 accommodated in the central hole 63 of the housing 42 is in contact with the contact portion 50 disposed at the center on the substrate 41 on the lower surface, and the central pressing operation body 2 is pressed. The contact portion 50 is pressed by pressing. Thereby, the pressing operation of the central pressing operation body 2 is detected.

  Further, the peripheral rod 47 accommodated in the peripheral hole portion 64 of the housing 42 is in contact with the contact portion 50 disposed on the periphery on the substrate 41, and tilts the pressing operation member 11 of the composite operation body 1. It is pressed by operating and presses any one of the contact portions 50. As a result, the tilting operation of the composite operation body 1 is detected.

  FIG. 10 is a sectional view taken along line BB in FIG. As shown in this figure, a ball 70 is interposed between the rotating plate 43 and the circular wall portion 61 of the housing 42 which is a holding portion of the rotating plate 43, thereby constituting a rolling bearing. The rotating plate 43 is in contact with the housing 42 via the balls 70, and receives the rotation of the rotating plate 43 accompanying the rotating operation of the composite operating body 1.

  FIG. 11 is an enlarged view of a part constituting the rolling bearing in FIG. As shown in this figure, the radially inner portion of the rotating plate 43 of the ball 70 is in contact with the peripheral surface of the circular wall portion 61 of the housing 42. Further, the radially outer portion of the rotating plate 43 of the ball 70 is in contact with the inner peripheral surface of a cylindrical step portion 84 formed on the bottom surface of the rotating plate 43. Further, the lower surface of the ball 70 is received by the bottom surface of the housing 42, and the lower surface of the rotating plate 43 is received by the upper portion of the ball 70. Further, as shown in FIG. 6, a ball accommodating portion 62 that is a concave portion is formed on the circumferential surface of the circular wall portion 61, and thereby the ball 70 is held so as not to move in the circumferential direction of the rotating plate 43.

  As shown in FIG. 11, the rotating plate 43 is supported by a ball 70, the inner peripheral edge of the opening 81 is separated from the peripheral surface of the circular wall portion 61 of the housing 42, and the lower surface of the stepped portion 84 is the bottom surface of the housing 42. Separated from the bottom. As described above, since the rotating plate 43 is received by the rolling bearing, the rotating plate 43 is not in direct contact with the housing 42, and the rotation operation by the rotation operation member 10 can be smoothed, and the resins are exchanged. Since it does not wear out, the life can be extended. In this embodiment, the ball 70 is used for the configuration of the rolling bearing, but a cylindrical roller may be used. In the present embodiment, eight balls 70 are provided, but the number of balls 70 is not limited to this, and may be more or less as long as the rotating plate 43 can smoothly rotate.

  A stepped portion 68 is formed on the lower surface of the ball housing portion 62 to hold the ball 70. By placing the ball 70 on the stepped portion 68 during assembly, the ball 70 can be prevented from rolling from a predetermined position, and the ease of assembly can be improved.

  Next, an operation when the tilt operation of the composite operation body 1 is performed will be described. FIG. 12 shows a side view of the composite operation type electrical component, and FIG. 13 shows a side view of the composite operation type electrical component in a state where the composite operation body 1 is tilted. As shown in FIG. 12, the peripheral rod 47 protruding upward from the cover body 45 is opposed to the lower surface of the pressing operation member 11 of the composite operation body 1.

  Here, as shown in FIG. 13, when the pressing operation member 11 of the operation body for composite operation 1 is tilted in one direction, the pressing operation member 11 has elasticity, so that only the pressed portion 30 and its periphery are pressed. It bends and presses only one peripheral rod 47 facing that portion. As described above, the peripheral rod 47 is linked to the contact portion 50 on the substrate 41 and presses the contact portion 50 in accordance with the pressing, thereby detecting a tilting operation.

  At this time, the rotation operation member 10 maintains its position without tilting. That is, the rotary operation member 10 that is rotatably fixed to the composite operation type electric component does not need to be provided with a clearance for the tilting operation, and thus can be firmly fixed to the composite operation type electric component. In addition, the operation feeling can be improved.

  Although the embodiment of the present invention has been described so far, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of the technical idea. In the present embodiment, the composite operation type electrical component that performs both the rotation operation and the tilting operation has been described. However, the present invention can be similarly applied to a rotation operation type electrical component that performs only the rotation operation.

  Further, in this embodiment, a ball accommodating portion 62 that is a concave portion is formed on the circular wall portion 61 of the housing 42, and a step portion 84 is formed on the lower surface of the rotating plate 43, and the ball 70 that is a rolling member is interposed therebetween. In contrast, a ball accommodating portion that is a concave portion that opens toward the inner peripheral side is formed on the lower surface of the rotating plate 43, and the ball 70 is placed between the outer peripheral surface of the circular wall portion 61 of the housing 42. You may make it comprise and hold a rolling bearing.

It is a disassembled perspective view of the operation body for compound operations in this embodiment. It is a perspective view showing the undersurface side of a rotation operation member. It is a top view of a press operation member. It is a perspective view showing another form of a press operation member. It is a perspective view of the operation body for compound operations. It is a disassembled perspective view of the housing | casing of the composite operation type electrical component in this embodiment. It is a perspective view of a housing | casing. It is a top view of the composite operation type | mold electrical component which attached the operation body for composite operations. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is an enlarged view of the part which comprises the bearing of FIG. It is a side view of the composite operation type electric component which attached the operation body for composite operations. It is a figure of the state which tilted the press operation body in one direction in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation body for compound operations 2 Center press operation body 10 Rotation operation member 11 Press operation member 20 Outer peripheral surface 21 Opening part 22 Through-hole 23 Edge part 24 Fitting part 25 Position stop part 30 Press part 31 Opening part 32 Connection part 33 Inner side Cutout portion 34 Outer cutout portion 40 Fixed plate 41 Board 42 Housing 43 Rotating plate 44 Terminal plate 45 Cover body 50 Contact portion 60 Housing portion 61 Circular wall portion 62 Ball housing portion 70 Ball 80 Cam portion 81 Opening portion 82 Fit piece 83 Positioning piece

Claims (4)

In a rotary operation type electrical component having an operation body that can be rotated and a housing that rotatably holds the operation body,
The housing houses a rotating body that fixes the operating body and has a holding portion that rotatably holds the rotating body, and the rotating body is rotatable with respect to the holding portion via a rolling bearing. A rotary operation type electrical component characterized by that.   The holding portion is formed as a cylindrical wall portion on the bottom surface of the housing, and a concave portion that opens toward the outer circumferential direction is formed on the peripheral surface of the wall portion, and a cylindrical shape is formed on the lower surface of the rotating body. The rotary operation type electric component according to claim 1, wherein the rolling bearing is configured by holding a rolling member between the concave portion and the step portion.   3. The rotary operation type electric component according to claim 2, wherein a step portion is formed on the bottom surface of the concave portion, and the mounting surface of the rolling member is formed one step lower.   The holding portion is formed as a cylindrical wall portion on the bottom surface of the casing, and has a concave portion that opens toward the inner circumferential direction on the lower surface of the rotating body, and the outer periphery of the concave portion and the wall portion. 2. The rotary operation type electric component according to claim 1, wherein a rolling member is held between the rolling bearing and the surface to constitute the rolling bearing.

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