JP6043953B2 - Rotating electronic components - Google Patents

Description

  The present invention relates to a rotary operation type electronic component used in an input operation unit of various electronic devices.

  In an input operation unit of various electronic devices, many rotary operation type electronic components are used for setting and adjusting various functions.

  And, as a form of use, a configuration in which an operation knob is mounted on an operation shaft of a rotary operation type electronic component and the operation knob is rotated is common, but depending on the configuration convenience of an electronic device, In some cases, the operating position of the rotating operation may be away from the rotating operation type electronic component. In this case, the operating axis of the rotating operation type electronic component is a long extension that also serves as an operation knob for the electronic device. In some cases, the shafts are connected and the user operates the rotary operation type electronic component by rotating the tip of the extension shaft.

  Hereinafter, a conventional rotary operation type electronic component and a use example in such an arrangement state will be described with reference to the drawings.

  FIG. 5 is a perspective view of a conventional rotary operation type electronic component, and FIG. 6 is a schematic view showing a use state in which the electronic component is attached to an electronic device.

  In the conventional rotary operation type electronic component, as shown in FIG. 5, an operation shaft 2 that is supported so as to be rotatable and vertically movable protrudes upward from the main body 1. The main body 1 is configured by mounting a bearing 4 above a case 3 made of insulating resin. The bearing 4 is made of metal, and has an annular cylindrical portion 4A protruding upward, and a flange portion 4B having substantially the same shape as the upper surface of the case 3 at the base portion of the cylindrical portion 4A. And the collar part 4B is distribute | arranged on the case 3, and also the leg part of the metal cover 5 distribute | arranged from the upper direction is crimped by the case 3 lower surface side, and the case 3 and the bearing 4 are integrated. The operation shaft 2 has an upper operation portion 2A positioned above the bearing 4, and a cylindrical shaft portion 2B extending downward from the operation portion 2A is supported by an upper opening 4C provided at the upper end of the cylindrical portion 4A. 4 is inserted. Here, the operation shaft 2 is rotatably supported on the outer peripheral side surface of the shaft portion 2B by the inner wall of the upper opening 4C.

  Although detailed illustration is omitted, the case 3 has a concave portion with an upper opening, and a contact pattern for an incremental encoder is arranged on the bottom surface of the concave portion. The output signal of the incremental encoder can be obtained from a plurality of terminals 3A derived from the side portion 3. Further, a switch contact portion having a pair of fixed contacts and a movable contact for contacting and separating between the fixed contacts is formed at the center of the bottom surface of the concave portion of the case 3, and when the pressing operation to the operation portion 2A is performed, The pair of fixed contacts are in a conductive state, and the two terminals 3B (see FIG. 6) led to the side opposite to the side from which the terminal 3A of the case 3 is led are conducted. .

  The conventional rotary operation type electronic component configured as described above is used by being soldered and mounted on a wiring board 11 of an electronic device, for example, as shown in FIG. In addition, the electronic device shown in FIG. 6 shows a vehicle-mounted meter unit.

  In the figure, terminals 3A and 3B are respectively connected to an electronic circuit (not shown) of the wiring board 11, and each signal obtained in response to a rotating operation or pressing operation of the operation unit 2A is transmitted to the electronic circuit and detected. It has come to be. The display panel unit 12 is disposed at a front position spaced from the wiring board 11 so as to face the wiring board 11. On the front surface of the display panel unit 12, although not shown, various meters are arranged so that information such as the speed of the vehicle and the engine speed can be visually recognized. The display panel unit 12 is provided with a through hole 12A at a position corresponding to the operation unit 2A of the rotary operation type electronic component, and a long, substantially cylindrical extension shaft 13 made of resin is provided in the through hole 12A. The operation portion 2A of the rotary operation type electronic component is press-fitted and connected to the insertion hole 13A provided through the insertion hole 13A.

  Further, a thin resin-like screen cover 14 made of a transparent resin is arranged at a predetermined interval so as to face the front side of the display panel unit 12. Also in this screen cover 14, a through hole 14 </ b> A is provided at a position corresponding to the position of the operation portion 2 </ b> A, and the tip end portion of the extension shaft 13 protrudes from the through hole 14 </ b> A. And the front-end | tip part of the extension shaft 13 protruded from 14 A of through-holes is the knob part 13B.

  Here, in the apparatus configuration described above, for example, the gap between the wiring board 11 and the display panel unit 12 is about 1 cm on the axis through which the extension shaft 13 is inserted, and the display panel unit 12 and the screen cover 14 are arranged. The interval is often set to about 10 cm, which is larger than that.

  Then, when the user rotates or presses the knob portion 13B protruding from the screen cover 14, the operation portion 2A connected to the extension shaft 13 is rotated or pressed, and each of the rotary operation type electronic components is operated. A signal corresponding to each operation is obtained, and a function or the like corresponding to each operation is activated by control by an electronic circuit based on these signals.

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

JP 2005-302354 A

  However, when the conventional rotary operation type electronic component is used in a configuration in which the rotary operation type electronic component is operated via the long extension shaft 13 as in the above-described vehicle-mounted meter unit, the rotary operation type electronic component is connected to the wiring board 11. High mounting accuracy is required. That is, if there is a minute mounting position deviation or a slight inclination at the time of mounting in the mounted state of the rotary operation type electronic component, the amount of deviation becomes large at the position of the knob portion 13B at the tip of the extension shaft 13. In order to prevent the extension shaft 13 press-fitted and connected to the operation shaft 2 from being inserted into the through hole 14A of the screen cover 14, it is difficult to mount the rotary operation type electronic component on the wiring board 11. Accuracy was required.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a rotary operation type electronic component in which occurrence of problems due to misalignment of the mounting position on a wiring board is suppressed.

  In order to achieve the above object, the present invention has the following configuration.

  According to the first aspect of the present invention, there is provided a case made of an insulating resin having a concave portion with an upper opening, a bearing attached to the case, and a central hole rotatably disposed in the concave portion of the case. A rotating body having a shaft, an operating shaft having a shaft portion inserted in the center hole of the bearing and the rotating body, and a rotating body that is disposed in the central hole of the rotating body and engages with the rotating body during a rotation operation to the operating shaft. And a driving body that rotates the rotating body together, and a predetermined gap that allows the operation shaft to tilt between an outer peripheral side surface of the shaft portion and a support portion of the shaft portion at the bearing. This is a rotary operation type electronic component characterized by being provided.

  If this is the case, even if there is a misalignment in the mounting position on the wiring board, the operation shaft can be absorbed and used by tilting it within the angle until the shaft contacts the bearing support location. Has the effect of being able to.

  As described above, according to the present invention, since the operation shaft can be tilted to a predetermined angle, even if there is a misalignment of the mounting position on the wiring board, the rotation can be absorbed and used by tilting the operation shaft. An advantageous effect that an operation type electronic component can be provided is obtained.

Sectional drawing of the rotation operation type electronic component by one embodiment of this invention Same perspective view Exploded perspective view Sectional drawing which shows a state when the operating shaft tilts Perspective view of a conventional rotary operation type electronic component Schematic showing the usage state where the electronic component is attached to the electronic device

  Hereinafter, the rotary operation type electronic component of the present invention will be described 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 the prior art, and detailed description is simplified.

(Embodiment)
1 is a sectional view of a rotary operation type electronic component according to an embodiment of the present invention, FIG. 2 is a perspective view thereof, FIG. 3 is an exploded perspective view thereof, and FIG. 4 is a sectional view showing a state where the operation shaft is tilted. FIG.

  In the figure, reference numeral 21 denotes an insulating resin case having a concave portion with an upper opening. A cylindrical cylindrical wall 21A projecting upward is provided at the center of the bottom surface of the concave portion. As a boundary, a substantially circular inner concave portion and an annular outer concave portion are formed.

  A pair of central fixed contact 22A and outer fixed contact 22B are provided on the bottom surface of the inner recess of the case 21, and terminals (not shown in the figure) from these contacts are led out from the side of the case 21. Yes.

  A movable contact 25 made of a thin metal plate is disposed in the inner recess. The movable contact 25 has a shape including a flat outer peripheral portion 25A formed in an annular shape and a central movable portion 25B extending so as to be inclined upward from the outer peripheral portion 25A toward the center. The outer peripheral portion 25A is placed in a normally connected state on the outer fixed contact 22B, and the central movable portion 25B is arranged in a state of facing the central fixed contact 22A with a predetermined interval.

  Further, an elastic body 26 made of insulating rubber is disposed on the movable contact 25. The elastic body 26 has a truncated cone shape that can be accommodated in the inner concave portion of the case 21, and is formed in a shape having an opening at the bottom, and the lower end of the outer periphery thereof is placed on the outer peripheral portion 25 </ b> A of the movable contact 25. . The central movable portion 25B of the movable contact 25 is located in the inner region of the lower opening of the elastic body 26.

  The push-on switch portion is configured as described above, and when the elastic body 26 is pressed from above, the elastic body 26 is buckled and deformed moderately, and the central movable portion 25B positioned in the inner region of the lower opening is It is pushed downward and comes into contact with the central fixed contact 22A. As a result, the outer fixed contact 22B and the central fixed contact 22A are electrically connected, and the corresponding terminals are electrically connected to each other. When the pressing force is removed, the elastic body 26 and the central movable portion 25B return to their original shapes and return to the switch-off state.

  On the other hand, a contact pattern 23 for an incremental encoder is formed on the bottom surface of the outer recess formed in the annular shape of the case 21, and a plurality of terminals 24 that are conductively extended from the contact pattern 23 are provided on the case 21. Derived from the side.

  Reference numeral 27 denotes a rotating body made of an insulating resin having a cylindrical portion 27A formed in a cylindrical shape and a circular flange portion 27B on the lower side thereof, and the flange portion 27B is rotated to the case 21 in correspondence with the outer concave portion. It is possible to combine. Irregularities with a constant pitch are formed radially on the upper surface of the flange portion 27B. The central hole of the cylindrical portion 27A of the rotating body 27 has a non-circular hole shape from the middle portion to the bottom so that a driving body 32 described later can be incorporated from below.

  A slider 28 having a plurality of brush portions made of a thin metal plate is caulked and fixed to the lower surface of the flange portion 27B. When the rotating body 27 is rotated, the brush portion of the slider 28 is rotated. However, a predetermined encoder signal is obtained from the terminal 24 by sliding on the bottom surface of the outer concave portion and coming into contact with and separating from the contact pattern 23.

  Reference numeral 29 denotes a metal bearing, which is provided with an annular cylindrical portion 29A projecting upward, and a flange portion 29B having substantially the same shape as the upper surface of the case 21 at the base portion of the cylindrical portion 29A. The cylindrical portion 29A has an upper opening 29C having a hole shape with a circular upper end. A substantially annular click spring 30 is disposed on the lower surface of the flange portion 29 </ b> B of the bearing 29.

  The bearing 29 is integrated with the case 21 by placing the flange portion 29 </ b> B from the upper surface side of the case 21 and caulking a leg portion of a metal cover 34 described later to the lower surface side of the case 21. In this state, the inner wall of the cylindrical portion 29 </ b> A of the bearing 29 supports the outer peripheral side surface of the cylindrical portion 27 </ b> A in the rotating body 27 in a rotatable manner. Further, the lower protrusion of the click spring 30 disposed on the lower surface of the flange portion 29B is in elastic contact with the upper surface of the flange portion 27B on which the unevenness is formed, and the click moderation is obtained when the rotating body 27 is rotated by this configuration. It is configured.

  Reference numeral 31 denotes a metal operation shaft. An upper operation portion 31A is positioned above the bearing 29, and a shaft portion 31B protruding in a cylindrical shape downward from the operation portion 31A is a bearing from the upper opening 29C of the bearing 29. 29, and the lower portion of the shaft portion 31B having an irregular shape is inserted into the central hole in the cylindrical portion 27A of the rotating body 27.

  The lower portion of the shaft portion 31B is inserted into a through hole formed in a deformed shape of the ring-shaped column portion 32A of the drive body 32 in the central hole of the rotating body 27, and the lower end of the shaft portion 31B is caulked. The drive body 32 is fixed to the shaft portion 31B. A resin cap member 33 is fitted into the hole at the lower end of the shaft portion 31B. The bottom surface of the bottom of the cap member 33 is a flat surface.

  The bottom surface of the bottom of the cap member 33 is in elastic contact with the top surface of the elastic body 26, and the cap member 33, the drive body 32, and the operation shaft 31 are caused by a reaction force caused by the elastic body 26 elastically deforming slightly downward. Is biased with upward force. Here, the drive body 32 is inserted and arranged in the central hole of the rotating body 27 from the lower side, and the operation shaft 31 is caulked and fixed to the drive body 32 to prevent the drive body 32 from coming off upward. .

  The drive body 32 is made of metal and includes an engagement portion 32B that protrudes outward in the radial direction from a position below the above-described ring-shaped cylindrical portion 32A. The upper surface of the engaging portion 32B is an inclined surface 32C (see FIG. 3) that is inclined downward from the base portion toward the protruding direction. A groove portion 27C (see FIG. 3) corresponding to the engaging portion 32B of the drive body 32 is provided in the center hole of the rotating body 27 in the vertical direction, and the upper end position of the groove portion 27C is the same as the inclined surface 32C. It is a fitting surface 27D (see FIG. 1) formed at an inclination angle.

  In the state where the driving body 32 is urged upward by the urging force from the elastic body 26 described above, as shown in FIG. 1, the inclined surface 32C of the engaging portion 32B is against the fitting surface 27D. Thus, the driving body 32 is maintained in a horizontal state, and the operation shaft 31 connected to the driving body 32 stands vertically upright.

  The driving body 32 can move downward from the position biased upward. That is, the operation shaft 31 integrated with the driving body 32 can be moved downward. Further, when the operating shaft 31 rotates and the driving body 32 integrated therewith rotates, the rotating body 27 rotates together by the engagement of the engaging portion 32B and the groove portion 27C.

  A metal cover 34 with legs is disposed from above the bearing 29, and the case 21 and the bearing 29 are integrated by caulking the leg to the lower surface side of the case 21.

  Here, in the rotary operation type electronic component, as shown in FIG. 1 and the like, a predetermined gap is provided between the outer peripheral side surface of the shaft portion 31B of the operation shaft 31 and the inner wall of the upper opening portion 29C of the bearing 29. In addition to this, a predetermined gap is also provided between the outer peripheral side surface of the ring-shaped cylindrical portion 32A of the driving body 32 and the inner wall of the central hole of the rotating body 27. Next, the operation will be described and the characteristic part will be described in detail.

  When the operation portion 31 </ b> A of the operation shaft 31 is pressed downward, the pressing force is transmitted to the elastic body 26 via the bottom bottom surface of the cap member 33. As a result, the elastic body 26 is buckled and deformed downward, and the central movable portion 25B of the movable contact 25 is pushed downward to come into contact with the central fixed contact 22A as described above. A switch-on state is established in which the fixed contact 22A is electrically connected.

  When the pressing force is released, the elastic body 26 and the central movable portion 25B of the movable contact 25 are elastically restored to the original shape, so that the switch-off state in which the outer fixed contact 22B and the central fixed contact 22A are in an electrically independent state. Return to.

  When the operation unit 31 </ b> A is rotated, the rotating body 27 rotates together via the driving body 32 connected to the lower side of the operating shaft 31. The brush portion of the slider 28 fixed to the lower surface of the flange portion 27 </ b> B of the rotating body 27 is brought into contact with and separated from the contact pattern 23 of the outer concave portion of the case 21, whereby a predetermined encoder signal is obtained.

  In the component, in a non-operation state in which no pressing operation or rotation operation is performed, the integrated operation shaft 31 and the drive body 32 are directed upward from the elastic body 26 as shown in FIG. In response to the urging force, the inclined surface 32C of the driving body 32 and the fitting surface 27D in the central hole of the rotating body 27 are in a pressure contact state by the urging force. In the component, as described above, a predetermined gap is provided between the outer peripheral side surface of the shaft portion 31B of the operation shaft 31 and the inner wall of the upper opening portion 29C of the bearing 29. Therefore, the operation shaft 31 does not rattle even in a non-operation state, and the outer peripheral side surface of the shaft portion 31B is vertically upright without contacting the inner wall of the upper opening 29C of the bearing 29.

  And since the said rotation operation type electronic component shall have the structure of the characteristic part mentioned above, the operation shaft 31 can tilt.

  That is, since a gap is provided between the outer peripheral side surface of the shaft portion 31B of the operation shaft 31 and the inner wall of the upper opening 29C of the bearing 29, as shown in FIG. The outer peripheral side surface of 31B can be tilted at an angle until it contacts the inner wall of the upper opening 29C of the bearing 29. At this time, the drive body 32 in the rotating body 27 also needs to be tilted according to the tilt angle. However, in this configuration, the contact position between the inclined surface 32C of the drive body 32 and the fitting surface 27D is slightly shifted. However, the drive body 32 is inclined, and a predetermined gap is also provided between the outer peripheral side surface of the ring-shaped cylindrical portion 32 </ b> A of the drive body 32 and the inner wall of the central hole of the rotary body 27. It is configured to tilt without being restricted by the inner wall of the hole.

  In this way, in the component, the operation shaft 31 can tilt by the gap provided between the outer peripheral side surface of the shaft portion 31B and the inner wall of the upper opening 29C of the bearing 29.

  It should be noted that the outer peripheral side surface of the ring-shaped cylindrical portion 32A of the driving body 32 and the inner wall of the central hole of the rotating body 27 do not come into contact with each other at the maximum tilt angle at which the shaft portion 31B of the operating shaft 31 contacts the inner wall of the upper opening 29C. In addition, the outer diameter of the ring-shaped cylindrical portion 32A may be set, or the upper end may be chamfered to set a large clearance with respect to the inner wall of the central hole of the rotating body 27.

  In the component, even when the operation shaft 31 is tilted as described above, the operation shaft 31 and the drive body 32 can be moved together in the vertical direction, and further, the drive body 32 is tilted. Also, the engagement state of the engaging portion 32B of the driving body 32 and the groove portion 27C of the rotating body 27 is maintained, and the rotation operation of the operation shaft 31 can be transmitted to the rotating body 27 via the driving body 32 to rotate together. Will be.

  As shown in FIG. 4, when the operation shaft 31 is tilted at the maximum tilt angle, that is, when the operation shaft 31 is tilted to an angle at which the outer peripheral side surface of the shaft portion 31B contacts the upper opening 29C of the bearing 29. For example, if the outer peripheral side surface of the ring-shaped cylindrical portion 32A of the driving body 32 and the inner wall of the central hole of the rotating body 27 are not in contact with each other, the operation shaft 31 rotates in the tilted state at the maximum tilt angle. The influence of friction generated during the operation or pressing operation is suppressed, and the amount of change with respect to the rotational torque in the state before tilting can be reduced.

  Next, the state of use and the like will be described. The rotary operation type electronic component is also used by being soldered and mounted on the wiring board as in the conventional case. The mounting state and the usage form in the electronic device are the same as the conventional one.

  At this time, when used in the usage pattern described in the section of the prior art, that is, when the extension shaft 13 is press-fitted and connected to the operation portion 31A of the rotary operation type electronic component. Since the thing of the said structure is the structure in which the operation shaft 31 can be tilted, the position of the knob part 13B of the extension shaft 13 can be adjusted easily. For example, the operation portion 31A is slightly tilted from the normal direction of the wiring board 11 on which the operation unit 31A is mounted due to a mounting position shift on the wiring board 11, and the like. Even if the positional relationship of 14A is not aligned, the positional deviation can be offset by tilting the operation shaft 31 with little effect on operability. In this way, with such a component, it is possible to suppress the occurrence of a problem that the knob portion 13B does not enter the through hole 14A, and it is not necessary to have high mounting accuracy of the rotary operation type electronic component on the wiring board 11. Useful. In addition, you may apply the said component by this invention besides setting it as the structure which connected the elongate extension shaft 13 to the operation part 31A of the operation shaft 31 as mentioned above.

  Note that, as the component, the example in which the incremental encoder functions by rotating operation is described above as an example, but the component may be configured such that an absolute encoder, a variable resistor, or the like functions. At that time, it may be determined as appropriate whether the corresponding contacts and elements are arranged on the movable side or the fixed side.

  In the above description, the operation shaft 31 is urged upward using the elastic body 26 of the push-on switch portion. However, the member that urges the operation shaft is other than the elastic body 26. May be. Then, only the urging member may be provided and the switch contact portion may be eliminated, and a simple rotary operation type electronic component may be used.

  Further, the shapes of the rotating body 27 and the driving body 32 are not limited to those described above.

  Since the rotary operation type electronic component according to the present invention can tilt the operation shaft to a predetermined angle, it can be used by absorbing the tilt by tilting the operation shaft even if the mounting position on the wiring board is misaligned. And is useful mainly when used in an input operation unit of various electronic devices.

21 Case 21A Cylindrical wall 22A Central fixed contact 22B Outer fixed contact 23 Contact pattern 24 Terminal 25 Movable contact 25A Outer part 25B Central movable part 26 Elastic body 27 Rotating body 27A Cylindrical part 27B Flange part 27C Groove part 27D Fitting surface 28 Sliding Child 29 Bearing 29A Cylindrical portion 29B Gutter portion 29C Upper opening portion 30 Click spring 31 Operation shaft 31A Operation portion 31B Shaft portion 32 Driver 32A Ring-shaped cylindrical portion 32B Engagement portion 32C Inclined surface 33 Cap member 34 Metal cover

Claims (1)

A case made of insulating resin having a recess in the upper opening;
A bearing having an opening attached to the case;
A rotating body having a central hole rotatably disposed in the recess of the case;
An operation shaft having a shaft portion inserted into the opening of the bearing and the central hole of the rotating body;
The rotating body has a column portion and an engaging portion provided at a position below the column portion, and the engaging portion is engaged with the rotating body during a rotation operation to the operation shaft. And a driving body that rotates the rotating body together,
With
A predetermined gap is provided between the outer peripheral side surface of the shaft portion and the inner wall of the opening of the bearing to allow the operation shaft to tilt ,
When the shaft portion of the operation shaft is tilted until it comes into contact with the inner wall of the opening of the bearing,
There is a gap between the outer peripheral side surface of the column portion located above the engaging portion and the inner wall of the central hole of the rotating body,
A rotary operation type electronic component characterized by that.

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