JP2017068950A - Rotational type electric component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotational type electric component that can reduce backlash of a shaft member and enhance the quality.SOLUTION: A rotational type electric component includes a bearing member 20 having a cylindrical portion 25, a shaft member 10 rotatably held by the bearing member 20, and rotation detecting means 30 for detecting the rotational operation of the shaft member 10. The bearing member 20 includes a first bearing portion 21 located on the distal end side of the cylindrical portion 25, and a second bearing portion 22 located at the lower side in an axial line 10a direction of the shaft member 10 as compared with the first bearing portion 21. The shaft member 10 includes a first shaft portion 11 arranged so as to face in slidable contact with the first bearing portion 21, and a second shaft portion 12 arranged so as to face in slidable contact with the second bearing portion 22, and is rotatably supported by the bearing member 20.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a rotating electrical component suitable for various inputs such as electronic equipment.

  Conventionally, a rotary electrical component that detects a rotational operation amount with respect to an operation shaft is known. In particular, a rotary electric component having a built-in push switch for detecting a pressing operation on the operation shaft is suitably used as a rotary encoder for adjusting, for example, the temperature of an air conditioner in an automobile and the volume of an audio.

  A rotary electric component with a built-in push switch is disclosed in Patent Document 1, for example. FIG. 21 is an exploded perspective view showing a conventional rotating electrical component 900. FIG. 22 is a cross-sectional view showing a conventional rotating electrical component 900. The operation shaft 902 is made of, for example, metal, and a lower end portion is a drive body locking portion 902A that fits into the drive body 906. Further, a retaining recess is formed in a slightly upper part of the driving body locking portion 902A. The main body 930 is configured by combining a bearing member 903 on the upper portion of the insulating case 904, and has a rotating body storage portion 904B inside. The bearing member 903 is formed by, for example, aluminum die casting and is formed in a cylindrical shape. A small diameter cylindrical portion 903A and a large diameter cylindrical portion 903B are formed on the bearing member 903. A rotating body 905 is rotatably disposed in the rotating body storage portion 904B. The rotating body 905 is formed of, for example, a resin material and is formed in a hollow disk shape. The operation shaft 902 is fitted in the small diameter cylindrical portion 903A in the inserted state, and the operation shaft 902 is retained at the lower edge portion of the small diameter cylindrical portion 903A by fitting the ring 910 into the retaining recess. When the operation shaft 902 is rotated, the driving body 906 is also rotated, and the rotating body 905 is rotated via the driving body 906. The upper part of the rotating body 905 is fitted to the large diameter cylindrical part 903B together with the driving body 906, and the rotating body 905 is guided by the inner wall surface of the large diameter cylindrical part 903B and rotates. A pair of fixed contact members 911, 912 and three sliding contact members 913, 914, 915 are embedded in the insulating case 904. The rubber rubber 909 is formed of a rubber material, and when pressed, the rubber rubber 909 is elastically deformed downward and the pressing portion 909B presses the movable contact member 916.

  The pair of fixed contact members 911 and 912 are turned on and off through the movable contact member 916, thereby forming a switch means. When the rotating body 905 rotates, the contact portions of the sliding contact members 913, 914, and 915 come in contact with and separate from the conductive pattern provided on the lower surface of the rotating body 905, and the terminal portions of the sliding contact members 913, 914, and 915 are electrically connected. , Becomes non-conductive, and a pulse signal is output.

  In order to enable a pressing operation and a rotation operation with respect to the operation shaft 902, the upper portion of the operation shaft 902 is at the distal end portion of the bearing member 903, and the lower portion is indirectly coupled to the bearing member 903 via the driving body 906 and the rotating body 905. It is supported by.

JP 2011-210507 A

  However, since the lower part of the operation shaft (shaft member) is supported by the bearing member via the driving body and the rotating body, the backlash of the shaft member may increase due to the dimensional tolerance of each part. In this case, there is a problem that the operational feeling of the rotating electrical component is impaired due to the backlash of the shaft member, and the quality is lowered.

  The present invention solves the above-described problems, and an object of the present invention is to provide a rotary electric component that can reduce the backlash of the shaft member and improve the quality.

  A rotary electric component according to the present invention includes a bearing member having a cylindrical portion, a shaft member rotatably supported by the bearing member, and a rotation detection unit that detects a rotation operation of the shaft member. In the electrical component, the bearing member includes a first bearing portion located on the distal end side of the cylindrical portion, and a second bearing portion located below the first bearing portion in the axial direction of the shaft member; And the shaft member is disposed so as to be slidably opposed to the first bearing portion, and the second shaft is disposed to be slidably opposed to the second bearing portion. And is rotatably supported by the bearing member.

  According to this configuration, since the shaft member is rotatably supported directly by the bearing member, no other member is interposed between the shaft member and the bearing member, and the backlash of the shaft member can be reduced. It becomes possible. Therefore, the quality of the rotating electrical component is improved.

  In the rotating electrical component of the present invention, a rotating member that rotates together with the shaft member is provided below the second bearing portion of the bearing member, and the bearing member is disposed below the second bearing portion. A guide portion that is positioned and rotatably holds the rotating member, and a clearance between the rotating member and the guide portion is a clearance between the first shaft portion and the first bearing portion, and The clearance between the second shaft portion and the second bearing portion is larger.

  According to this configuration, the shaft member can be reliably guided to be rotatable by the first bearing portion and the second bearing portion of the bearing member.

  In the rotating electrical component of the present invention, the first shaft portion of the shaft member has a circular cross-sectional shape, and the inner surface of the first bearing portion has a polygonal shape having a plurality of sides in the cross-sectional shape. The first shaft portion is rotatably guided to portions corresponding to a plurality of sides constituting the polygonal shape of the first bearing portion.

  It is difficult to process the first bearing part and the second bearing part of the bearing member into a perfect circle at the same time by die casting such as die casting, and the polygonal shape is more accurate than such a circle. It is easy to put out. For this reason, by making the first bearing portion of at least one of the two bearing portions into a polygonal shape, the dimensional accuracy of the first bearing portion and the second bearing portion can be increased, the backlash of the shaft member can be reduced, and the shaft The member can be rotatably supported.

  In the rotating electrical component of the present invention, a push switch that is driven by a pressing operation in the axial direction is provided below the shaft member, and the bearing member moves the shaft member in the axial direction. It is preferable that the lubricant is supported, and a lubricant is provided at least between the first shaft portion and the first bearing portion and between the second shaft portion and the second bearing portion.

  According to this configuration, the first bearing portion is a portion in which the polygonal side portion in contact with the first shaft portion rotatably supports the shaft member. Accordingly, the clearance between the polygonal corner portion of the first bearing portion and the shaft member is increased, and this portion is used as a communication portion with the space between the first bearing portion and the second bearing portion. Can do. Therefore, even if a lubricant is provided between the first bearing portion and the first shaft portion and between the second bearing portion and the second shaft portion, the operation due to the pressing operation of the shaft member is not hindered.

  In the rotating electrical component of the present invention, the inner surface of the tubular portion may be positioned between the first bearing portion and the second bearing portion in a direction perpendicular to the rotation center axis of the shaft member. A step portion formed so that the dimension is larger on the first bearing portion side than the second bearing portion side is provided, and the shaft member includes a thin shaft portion that can be inserted into a lower portion side of the step portion. A thick shaft portion that is thicker than the thin shaft portion and can be inserted on the first bearing portion side of the cylindrical portion, and the step between the thin shaft portion and the thick shaft portion. A contact portion is formed opposite to the contact portion, and a lubricant is provided between the step portion and the contact portion, and the contact portion is pressed when the shaft member is pressed in the axial direction. It is preferable that the portion abuts on the stepped portion.

  When the shaft member is pressed, when the contact portion of the shaft member hits the step portion and the movement of the shaft member stops, a contact noise is generated, but a lubricant is generated between the step portion and the contact portion. By providing this, the contact sound can be reduced. Further, since the stepped portion and the contact portion can be provided at a position separated from the first bearing portion of the cylindrical portion, the lubricant hardly flows out to the outside.

  In the rotating electrical component of the present invention, the bearing member is provided with a receiving portion formed below the second bearing portion so as to be larger than the second bearing portion, and is flat on the ceiling portion of the receiving portion. A receiving portion having a flat surface is provided, and a lower end portion of the shaft member is located in the accommodating portion, and a retaining member is fixed, so that the retaining member can come into contact with the receiving portion. It is preferable that a lubricant is provided between the retaining member and the receiving portion so as to face each other.

  According to this configuration, when the shaft member returns to the initial state after the push switch is driven, the retaining member comes into contact with the receiving portion, and the sound generated at this time can be reduced with the lubricant.

  In the rotating electrical component of the present invention, the retaining member is made of a metal material having an annular plate-shaped portion, and the receiving portion is recessed upward from the flat surface facing the plate-shaped portion. It is preferable that a recess is provided.

  According to this configuration, it is possible to prevent the retaining member from sticking to the flat surface of the receiving portion by the concave portion provided in the receiving portion. Moreover, a recessed part can be utilized as a pool part of a lubricant.

  In the rotating electrical component of the present invention, the shaft member is provided with a flange-shaped portion corresponding to the first bearing portion, and the flange-shaped portion constitutes the first shaft portion, and the bearing In the member, a protruding wall protruding inward from an inner peripheral surface of the tubular portion is provided corresponding to the second shaft portion, and the protruding wall constitutes the second bearing portion. And

  According to this configuration, since the bearing member and the portion of the shaft member to be supported are determined, the backlash can be further suppressed by increasing the dimensional accuracy of the portion. In addition, since the hook-shaped portion and the protruding wall are provided in different members, the configuration of the mold is not complicated, and it can be easily processed.

  In the rotating electrical component of the present invention, a push switch that is driven in accordance with a pressing operation in the axial direction is provided below the shaft member, and the bearing member moves the shaft member in the axial direction. The projecting wall is formed with a penetrating portion communicating with a space located between the first bearing portion and the second bearing portion, and at least the first shaft portion and the first shaft A lubricant is provided between the bearing portion and between the second shaft portion and the second bearing portion.

  According to this configuration, even if the portion located between the first bearing portion and the second bearing portion becomes a closed space due to the lubricant, the penetration portion formed in the protruding wall by the air in the space Therefore, it is possible to perform a favorable pressing operation without affecting the pressing operation when driving the push switch.

  The rotating electrical component of the present invention includes a rotating member made of a synthetic resin material having a ceiling wall through which a lower end portion of the shaft member is inserted, and the tip end of the shaft member inserted through the rotating member. A driving body made of a synthetic resin material fixed to a portion, and the driving body engages with the rotating member in a circumferential direction to transmit the rotating operation of the shaft member to the rotating member, and The driving body is capable of contacting the ceiling wall of the rotating member, and restricts the upward movement of the shaft member.

  According to this configuration, when the shaft member returns to the initial state after the push switch is driven, the rotating member and the driving body are combined even if the driving body vigorously contacts the ceiling wall of the rotating member. Since it is comprised with the resin material, both collision noise can be made small.

  In the rotating electrical component of the present invention, the rotation detecting means includes a slider that rotates together with the shaft member, and a fixed contact that the slider contacts.

  According to this configuration, the rotation detection unit can be configured with a simple configuration.

  According to the present invention, since the shaft member is directly rotatably supported by the first bearing portion and the second bearing portion of the bearing member, no other member is interposed between the shaft member and the bearing member. Thus, the backlash of the shaft member can be reduced. Therefore, it is possible to provide a rotary electric component that can reduce the backlash of the shaft member and improve the quality.

It is a perspective view which shows the rotary electric component of 1st Embodiment of this invention. It is the disassembled perspective view which looked at the rotary electric component of 1st Embodiment from diagonally upward. It is the disassembled perspective view which looked at the rotary electric component of 1st Embodiment from diagonally downward. It is a front view which shows the rotary electrical component of 1st Embodiment. It is sectional drawing cut | disconnected by the VV line | wire of FIG. FIG. 6 is a cross-sectional view showing a state where the shaft member is pressed in the axial direction in the same cross section as FIG. 5. It is an external view which shows a bearing member, Fig.7 (a) is a top view, FIG.7 (b) is a bottom view. It is an external view which shows a shaft member, Fig.8 (a) is a side view, FIG.8 (b) is a bottom view. FIG. 9A is an external view showing a retaining member, FIG. 9A is a plan view, and FIG. 9B is a front view. It is sectional drawing cut | disconnected by the XX line of FIG. It is a perspective view which shows the rotary electrical component of 2nd Embodiment of this invention. It is the disassembled perspective view which looked at the rotary electric component of 2nd Embodiment from diagonally upward. It is the disassembled perspective view which looked at the rotary electric component of 2nd Embodiment from diagonally downward. It is a top view which shows the rotary electrical component of 2nd Embodiment. It is a front view which shows the rotary electrical component of 2nd Embodiment. It is sectional drawing cut | disconnected by the XVI-XVI line | wire of FIG. It is sectional drawing cut | disconnected by the XVII-XVII line | wire of FIG. It is sectional drawing which shows the state by which the shaft member was pressed by the axial direction in the same cross section as FIG. It is an external view which shows a bearing member, Fig.19 (a) is a top view, FIG.19 (b) is a bottom view. It is an external view which shows a shaft member, Fig.20 (a) is a side view, FIG.20 (b) is a bottom view. It is a disassembled perspective view which shows the conventional rotating electrical component. It is sectional drawing which shows the conventional rotating electrical component.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For easy understanding, the dimensions of the drawings are appropriately changed.

[First Embodiment]
FIG. 1 is a perspective view showing a rotating electrical component 1 according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the rotary electrical component 1 as viewed obliquely from above. FIG. 3 is an exploded perspective view of the rotary electrical component 1 as viewed obliquely from below. FIG. 4 is a front view showing the rotary electrical component 1. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view showing a state where the shaft member 10 is pressed in the direction of the axis 10a in the same cross section as FIG. 7 is an external view showing the bearing member 20, FIG. 7 (a) is a plan view, and FIG. 7 (b) is a bottom view. 8 is an external view showing the shaft member 10, FIG. 8 (a) is a side view, and FIG. 8 (b) is a bottom view. FIG. 9 is an external view showing the retaining member 16, FIG. 9A is a plan view, and FIG. 9B is a front view. 10 is a cross-sectional view taken along line XX in FIG.

  As shown in FIGS. 1 to 5, the rotary electrical component 1 according to the first embodiment of the present invention includes a shaft member 10, a bearing member 20, a rotation detection means 30, and a push switch 40, and a case member. 50. In this specification, in order to make the following explanation easy to understand, the Z1 side in FIG. 1 is the upper side, and the Z2 side is the lower side.

  The shaft member 10 is made of a metal material such as aluminum by, for example, cutting, and has a first shaft portion 11 and a second shaft portion 12 having a circular cross section, and an operation formed in a larger shape than the first shaft portion 11. Part 13. As shown in FIGS. 2 and 3, the shaft member 10 is formed so that the upper side is thicker in the direction of the axis 10 a of the shaft member 10. In this embodiment, the first shaft portion 11 is more than the second shaft portion 12. A thick thick shaft portion 10e is formed, and the second shaft portion 12 forms a thin shaft portion 10d. A contact portion 10f is formed by a step between the thin shaft portion 10d and the thick shaft portion 10e as shown in FIG. The contact portion 10f has a flat surface orthogonal to the axis 10a. Further, a non-circular engaging portion 14 is formed on the lower end side of the shaft member 10. Further, the shaft member 10 includes an engagement shaft portion 10 b and a restriction portion 10 c between the second shaft portion 12 and the engagement portion 14. The engagement shaft portion 10b is formed in a circular shape. Further, the restricting portion 10c is formed by a flat surface orthogonal to the axis 10a.

  The bearing member 20 is made of metal, for example, made of zinc die cast. As shown in FIGS. 1 to 4, a cylindrical portion 25 and a rectangular flange portion 26 provided on the lower side of the cylindrical portion 25. And have. As shown in FIG. 2, the bearing member 20 of the present embodiment is provided with a first bearing portion 21 on the distal end portion 25 a side of the cylindrical portion 25. As shown in FIGS. 3 and 5, the second bearing portion 22 is located below the first bearing portion 21 in the direction of the axis 10 a of the shaft member 10. On the inner surface of the cylindrical portion 25, the dimension in the direction orthogonal to the rotation center axis of the shaft member 10 is at a position between the first bearing portion 21 and the second bearing portion 22 from the second bearing portion 22 side. Is also provided with a step portion 23 formed to be larger on the first bearing portion 21 side. The upper surface of the step portion 23 is a parallel surface corresponding to the contact portion 10 f of the shaft member 10. Further, the bearing member 20 is provided with an accommodating portion 27 formed below the second bearing portion 22 so as to be larger than the second bearing portion 22. The ceiling part 27a of the accommodating part 27 of this embodiment is formed flat, and the receiving part 24 which has the flat surface 24a is provided in this ceiling part 27a. As shown in FIGS. 3 and 5, the receiving portion 24 of the present embodiment is provided with a recess 24 b so as to be recessed upward from the flat surface 24 a. As shown in FIG. 7B, there are a plurality (eight) of the recesses 24b provided in the receiving portion 24 of the present embodiment. The bearing member 20 has a guide portion 20b that is positioned below the second bearing portion 22 and rotatably holds a rotating member 31 described later. Note that the rotation center axis of the shaft member 10 coincides with the axis 10a.

  The driving body 15 is formed by molding a synthetic resin material. As shown in FIG. 2, the driving body 15 is formed in a shape in which the engaging portion 14 of the shaft member 10 is fitted. Further, the driving body 15 has an uneven shape on the outer periphery, and as shown in FIGS. 2 and 3, has a shape that makes sliding contact with a rotating member 31 described later in the direction of the axis 10 a. A desired operation of the shaft member 10 with respect to the rotating member 31 is enabled by fitting the driving body 15 into the engaging portion 14 of the shaft member 10 by press-fitting.

  The retaining member 16 is made of a metal material having elasticity, and as shown in FIGS. 2, 3 and 9, a plurality of annular plate-like portions 16a and a plurality of the plate-like portions 16a connected to the inner edge side of the plate-like portion 16a are formed. Engaging piece 16b. The retaining member 16 has an elastic engagement piece 16b engaged with the engagement shaft portion 10b of the shaft member 10 in a state where the annular plate-shaped portion 16a is in contact with the restriction portion 10c of the shaft member 10. It is fixed to the lower end of the shaft member 10. Thereby, the retaining member 16 can be attached to the shaft member 10 reliably and easily.

  The first shaft portion 11 of the shaft member 10 is disposed so as to be slidably contacted with the first bearing portion 21, and the second shaft portion 12 is disposed so as to be slidably contacted with the second bearing portion 22. The first bearing portion 21 and the second bearing portion 22 of the bearing member 20 are rotatably supported. As will be described later, the shaft member 10 is supported so as to be movable in the direction of the axis 10a when the operation portion 13 is pressed.

  And the lower end part of the shaft member 10 is located in the accommodating part 27 of the bearing member 20, and the drive body 15 and the retaining member 16 are fitted therein. Thus, the shaft member 10 can be prevented from being pulled out from the bearing member 20, and the plate-like portion 16a of the retaining member 16 is received by the ceiling portion 27a of the housing portion 27 when the operation portion 13 is not pressed. The initial state of contacting the portion 24 can be maintained. In addition, since the attachment position of the retaining member 16 with respect to the shaft member 10 is determined by the restricting portion 10c, variation in the amount by which the shaft member 10 protrudes from the bearing member 20 can be suppressed.

  As shown in FIGS. 5 and 6, a lubricant 61 is provided between the receiving portion 24 and the plate-like portion 16a. Since the receiving part 24 has the recessed part 24b, the lubricant 61 is held in the recessed part 24b. Further, the recess 24 b can be used as a pool of the lubricant 61. Further, a lubricant 62 is provided between the first shaft portion 11 and the first bearing portion 21, between the second shaft portion 12 and the second bearing portion 22, and between the step portion 23 and the contact portion 10f. Is provided. Lubricating oil such as grease is suitable for the lubricant 61 and the lubricant 62. Although not shown, the lubricant 61 is also provided in the guide portion 20 b of the storage portion 27. Note that the same lubricant 61 and lubricant 62 are used.

  The rotation detection means 30 detects the rotation operation of the shaft member 10, and includes a rotation member 31 that can rotate around the axis 10 a of the shaft member 10, a slider 32 that is fixed to the rotation member 31, and a fixed contact. And conductive members 33, 34, and 35 having 33a, 34a, and 35a. The rotating member 31 is made of a synthetic resin material, and a through hole is formed in a portion that accommodates the driving body 15. This through hole allows the driving body 15 to move when the driving body 15 moves downward, and a protrusion that rotates the rotating member 31 integrally with the driving body 15 when the driving body 15 rotates about the axis 10a. 31c. Thereby, the rotation operation of the shaft member 10 is transmitted to the rotation member 31 via the drive body 15. The slider 32 is obtained by processing a metal leaf spring. Further, an uneven portion 31 b is formed on the upper surface of the rotating member 31. The metal spring member 36 is fixed to the bearing member 20 so as to be elastically contactable with the uneven portion 31b.

  The conductive members 33, 34, and 35 are obtained by processing a conductive metal plate. The conductive members 33, 34, and 35 are fixed to a first case member 51 described later, and fixed contacts 33a, 34a, and 35a of the conductive members 33, 34, and 35 are divided and arranged in the circumferential direction. In addition, the conductive members 33, 34, and 35 include terminal portions 33 b, 34 b, and 35 b that are exposed to the outside from the first case member 51.

  The push switch 40 includes a movable contact member 41, a fixed contact member 42, a support member 43, and an elastic member 45. The movable contact member 41 is made of a conductive metal plate, and as shown in FIGS. 2 and 3, includes a movable contact portion 41a and a support portion 41b that supports the movable contact portion 41a so as to be elastically deformable. The fixed contact member 42 is made of a conductive metal plate, is fixed to a first case member 51 to be described later, and includes a fixed contact portion 42a and a terminal portion 42b that are switching fixed contacts. The support member 43 is made of a conductive metal plate, is fixed to a first case member 51 to be described later, and has a support contact portion 43a and a terminal portion 43b which are common fixed contacts. The elastic member 45 is made of, for example, silicone rubber formed into a dome shape, and can be elastically deformed in the vertical direction. The elastic member 45 is an urging member (returning member) that returns the shaft member 10 to the initial state before the pressing operation via the driving body 15. That is, the push switch 40 of this embodiment includes an elastic member 45 as a return member that returns the shaft member 10 to the initial state. Note that, depending on the configuration of the movable contact, the movable contact member may have a function of a return member.

  The case member 50 includes a first case member 51 that holds the conductive members 33, 34, and 35, the fixed contact member 42, and the support member 43, and a cover 53 that integrally holds the first case member 51 and the bearing member 20. .

  The first case member 51 is made of an insulating synthetic resin material, and is insert-molded integrally with the conductive members 33, 34, 35, the fixed contact member 42 and the support member 43 as shown in FIGS. 2 and 3. Is.

  The cover 53 is obtained by bending a metal plate. The cover 53 is bent so as to sandwich the flange portion 26 of the bearing member 20 and the first case member 51.

  The rotary electrical component 1 is capable of rotating and pressing the shaft member 10. The rotation detecting means 30 rotates the rotating member 31 when the three contact portions of the slider 32 attached to the rotating member 31 are in sliding contact with the fixed contacts 33a, 34a, 35a of the conductive members 33, 34, 35. It is configured so that it can be detected. The rotary member 31 is rotated by the rotation operation of the shaft member 10, the fixed contacts 33 a, 34 a, 35 a of the conductive members 33, 34, 35 and the contact portion of the slider 32 are brought into contact with and separated from each other, and the conductive members 33, 34, 35. The continuity state between is switched. As a result, a signal corresponding to the sliding contact position of the slider 32 is output to the terminal portions 33b, 34b, 35b of the conductive members 33, 34, 35. Thus, the rotation operation can be detected by the change of the output signal. At this time, the spring member 36 is fixed to the bearing member 20 and elastically contacts the concave and convex portion 31 b of the rotating member 31. Thereby, the load required for rotation of the rotation member 31 changes with rotation. Note that the rotation detection means 30 can also be configured by an angle sensor using a resistor pattern.

  On the other hand, as shown in FIG. 5, the push switch 40 is arranged so that the movable contact portion 41 a of the movable contact member 41 does not contact the fixed contact portion 42 a in the initial state. The support member 43 is disposed at a position where it does not contact the fixed contact member 42, and the support contact portion 43 a supports the support portion 41 b of the movable contact member 41. The lower part of the dome part 45b of the elastic member 45 is disposed so as to contact the support part 41b of the movable contact member 41. As shown in FIG. Are separated.

  As shown in FIG. 6, the push switch 40 is driven by a pressing operation of the shaft member 10 in the direction of the axis 10 a. When a pressing operation is performed on the operation unit 13 from the initial state shown in FIG. 5, as shown in FIG. 6, the skirt-shaped (end-spreading) dome portion 45b of the elastic member 45 is elastically deformed so as to buckle. Thus, the central portion 45a of the elastic member 45 presses the movable contact portion 41a. As a result, the movable contact portion 41 a of the movable contact member 41 contacts the fixed contact portion 42 a of the fixed contact member 42. Thus, the terminal part 42 b of the fixed contact member 42 and the terminal part 43 b of the support member 43 are electrically connected via the movable contact member 41. Therefore, the pressing operation of the shaft member 10 can be detected. When released from the pressing operation state, as shown in FIG. 5, the elastic member 45 is restored to the initial state, and the movable contact portion 41a is separated from the fixed contact portion 42a. Therefore, it can be detected that the state has returned to the non-pressing operation state.

  The rotary electric component 1 is incorporated in an electronic device or the like and used for various inputs. In addition, the direction of the axis 10a in the state attached to the electronic device etc. may be a horizontal direction, for example.

  Next, the characteristic part of the rotary electrical component 1 of this embodiment will be described in detail.

  In the rotary electric component 1 of the present embodiment, the shaft member 10 is disposed so as to be opposed to the first bearing portion 21 of the bearing member 20 so as to be slidable, and the second bearing portion of the bearing member 20. 22 and a second shaft portion 12 disposed so as to be opposed to each other so as to be slidable. The first shaft portion 11 and the second shaft portion 12 have a circular cross-sectional shape. The inner peripheral surface of the second bearing portion 22 of the bearing member 20 has a circular cross-sectional shape as shown in FIG. As shown in FIGS. 5 and 6, the clearance between the second shaft portion 12 and the second bearing portion 22 can be reduced. On the other hand, the inner surface of the first bearing portion 21 has a polygonal shape having a plurality of sides in cross section, and more specifically, as shown in FIGS. 2 and 7A, a regular octagonal corner portion. Has a rounded cross-sectional shape. Thereby, as shown in FIG. 10, the 1st axial part 11 is rotatably guided to the part corresponding to the some edge | side which comprises the polygonal shape of the 1st bearing part 21. As shown in FIG.

  The inner surface of the first bearing portion 21 in the present embodiment has a polygonal shape with a plurality of sides in cross-sectional shape, and it is easy to obtain accuracy by a die casting method such as die casting. It is difficult to simultaneously process the first bearing portion 21 and the second bearing portion 22 of the bearing member 20 into a perfect circle by a die casting method such as die casting, and at least one of the first bearing portions 21 is formed. By setting it as a polygonal shape, the dimensional accuracy of the 1st bearing part 21 and the 2nd bearing part 22 is raised. Thereby, the clearance between the 1st axial part 11 and the 1st bearing part 21 can be made small. On the other hand, the clearance between the rotating member 31 and the guide portion 20b is the clearance between the first shaft portion 11 and the first bearing portion 21, and the clearance between the second shaft portion 12 and the second bearing portion 22. Greater than clearance. Thus, the rotation operation of the rotation member 31 in the guide portion 20b does not affect the shaft member 10, and the shaft member 10 is reliably guided to be rotatable by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20. can do. In addition, each member arrange | positioned at the accommodating part 27 of the bearing member 20 exists in the state urged | biased by the fixed or elastic force, and does not produce rattling.

  In the rotating electrical component 1 of the present embodiment, the shaft member 10 is directly rotatably supported by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20, so that the shaft member 10, the bearing member 20, Since no other member is interposed between them, the backlash of the shaft member 10 can be reduced. Furthermore, by making the cross-sectional shape of the 1st bearing part 21 into a polygonal shape, the clearance between the 1st shaft part 11 and the 1st bearing part 21, and the 2nd shaft part 12 and the 2nd bearing part 22 are used. The clearance between them is reduced at the same time, and the play of the shaft member 10 can be reduced. In the rotary electric component 1 of the present embodiment, the inner surface of the second bearing portion 22 has a circular cross-sectional shape, but is limited to a circle as long as the shape does not hinder the rotation operation of the second shaft portion 12. Is not to be done.

  Further, in the rotary electric component 1 of the present embodiment, the bearing member 20 supports the shaft member 10 so as to be movable in the axial direction, at least between the first shaft portion 11 and the first bearing portion 21, and the second shaft. A lubricant 62 is provided between the portion 12 and the second bearing portion 22. Since the clearance between the second shaft portion 12 and the second bearing portion 22 is small and the lubricant 62 is provided, the movement of air is hindered when the shaft member 10 is moved in the axial direction. It is done. Even in this case, the clearance between the shaft member 10 and the polygonal corner portion of the first bearing portion 21 is large. For this reason, the corner portion of the first bearing portion 21 can be a communication portion with the space between the first bearing portion 21 and the second bearing portion 22. Therefore, even if the lubricant 62 is provided between the first bearing portion 21 and the first shaft portion 11 and between the second bearing portion 22 and the second shaft portion 12, the air can move. The operation by the pressing operation of the member 10 is not hindered.

  As shown in FIG. 5, a contact portion 10f facing the step portion 23 of the bearing member 20 is formed on the shaft member 10, and a lubricant 62 is provided between the step portion 23 and the contact portion 10f. . When the shaft member 10 is pressed in the axial direction, as shown in FIG. 6, the abutting portion 10 f abuts on the stepped portion 23 after the push switch 40 is driven. When the shaft member 10 is pressed, when the contact portion 10f of the shaft member 10 hits the step portion 23 and the movement of the shaft member 10 stops, a contact sound is generated. This contact noise can be reduced by providing the lubricant 62 between 10f. According to such a configuration, it is considered that a braking force for buffering the movement of the shaft member 10 is generated. Further, since the step portion 23 and the contact portion 10f can be provided at a position separated from the first bearing portion 21 of the cylindrical portion 25, the lubricant 62 is unlikely to flow out to the outside.

  In the rotating electrical component 1 of the present embodiment, a receiving portion 24 having a flat surface 24 a is provided on the ceiling portion 27 a of the housing portion 27. The retaining member 16 has a plate-like portion 16a that is disposed in the accommodating portion 27 and is disposed to face the receiving portion 24 so as to be in contact with the receiving portion 24. Therefore, when the pressing operation is released and the initial state is restored by the urging force (restoring force) of the elastic member 45, the plate-like portion 16a comes into contact with the receiving portion 24 as shown in FIG. Further, since the lubricant 61 is provided between the receiving portion 24 of the bearing member 20 and the plate-like portion 16a of the retaining member 16, the sound when the plate-like portion 16a contacts the receiving portion 24 is generated. Can be small.

  Further, since the recess 24 b is formed in the receiving portion 24, it is possible to prevent the retaining member 16 from sticking to the flat surface 24 a of the receiving portion 24 by the lubricant 61. Further, the recess 24 b can be used as a pool of the lubricant 61. Further, a plurality of the recesses 24b are formed in the receiving part 24 and, as shown in FIG. 5, are covered with the plate-like part 16a in an initial state where the pressing operation to the shaft member 10 is not performed. By doing so, the flow of the lubricant 61 from the recess 24b can be reduced, and the lubricant 61 can be held for a long period of time, and sound can be suppressed. In addition, the recessed part 24b is not limited to the shape shown in FIG.6 and FIG.7 (b), For example, one annular groove continuous in the circumferential direction may be sufficient. Further, it is sufficient that a part of the recess 24b is covered with the plate-like portion 16a, and the entire recess 24b is not necessarily covered with the plate-like portion 16a.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  The rotary electric component 1 according to the first embodiment includes a bearing member 20 having a cylindrical portion 25, a shaft member 10 rotatably held by the bearing member 20, and a rotation for detecting a rotation operation of the shaft member 10. Detecting means 30. The bearing member 20 includes a first bearing portion 21 located on the distal end side of the tubular portion 25, and a second bearing portion 22 located lower than the first bearing portion 21 in the axis 10 a direction of the shaft member 10. ,have. Furthermore, the shaft member 10 includes a first shaft portion 11 disposed so as to be slidably contacted with the first bearing portion 21 and a second shaft portion disposed so as to be slidably contacted with the second bearing portion 22. 12 and is rotatably supported by the bearing member 20.

  According to this configuration, since the shaft member 10 is rotatably supported by the bearing member 20, no other member is interposed between the shaft member 10 and the bearing member 20. Can be reduced. Therefore, the quality of the rotary electrical component 1 is improved.

  Further, in the rotating electrical component 1 of the present embodiment, a rotating member 31 that rotates together with the shaft member 10 is provided below the second bearing portion 22 of the bearing member 20, and the bearing member 20 is provided by the second bearing portion 22. Also has a guide portion 20b that is positioned below and rotatably holds the rotating member 31. The clearance between the rotating member 31 and the guide portion 20b is based on the clearance between the first shaft portion 11 and the first bearing portion 21 and the clearance between the second shaft portion 12 and the second bearing portion 22. Is also big.

  According to this configuration, the shaft member 10 can be reliably guided to be rotatable by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20.

  Further, the first shaft portion 11 of the shaft member 10 has a circular cross-sectional shape, and the inner surface of the first bearing portion 21 has a polygonal shape having a plurality of sides in the cross-sectional shape. The first shaft portion 11 is rotatably guided to portions corresponding to a plurality of sides constituting the polygonal shape.

  It is difficult to process the first bearing portion 21 and the second bearing portion 22 of the bearing member 20 into a perfect circle at the same time by a die casting method such as die casting, and it is more polygonal than such a circle. Is easy to get accuracy. For this reason, the dimensional accuracy of the 1st bearing part 21 and the 2nd bearing part 22 is raised by making the 1st bearing part 21 of at least one of two bearing parts into a polygonal shape, and there is less play of the shaft member 10. Thus, the shaft member 10 can be rotatably supported.

  Further, below the shaft member 10, a push switch 40 that is driven by a pressing operation in the direction of the axis 10a is provided, and the bearing member 20 is supported so as to be movable in the direction of the axis 10a. A lubricant 62 is provided at least between the first shaft portion 11 and the first bearing portion 21 and between the second shaft portion 12 and the second bearing portion 22.

  According to this structure, the 1st bearing part 21 becomes a part which the polygonal side part which contact | connects the 1st axial part 11 supports the shaft member 10 rotatably. Thereby, since the clearance between the polygonal corner portion of the first bearing portion 21 and the shaft member 10 is increased, this portion is communicated with the space between the first bearing portion 21 and the second bearing portion 22. Part. Therefore, even if the lubricant 62 is provided between the first bearing portion 21 and the first shaft portion 11 and between the second bearing portion 22 and the second shaft portion 12, the operation by the pressing operation of the shaft member 10 is performed. There is no hindrance.

  Further, in the rotating electrical component 1 of the present embodiment, the bearing member 20 is provided with an accommodating portion 27 formed larger than the second bearing portion 22 below the second bearing portion 22, and the ceiling of the accommodating portion 27. A receiving portion 24 having a flat surface 24a is provided on the portion 27a. The lower end portion of the shaft member 10 is located in the accommodating portion 27, and the retaining member 16 is fixed, and the retaining member 16 is disposed to face the receiving portion 24 so as to be in contact with the retaining member 16. And the receiving portion 24 is provided with a lubricant 61.

  According to this configuration, when the shaft member 10 returns to the initial state after the push switch 40 is driven, the retaining member 16 comes into contact with the receiving portion 24. The sound generated at this time is generated by the lubricant 61. Can be small. Note that the lubricant 61 may be the same as the lubricant 62. Further, the lubricant 61 and the lubricant 62 may be spread in a continuous state.

  Further, in the rotary electric component 1 of the present embodiment, the retaining member 16 is made of a metal material, and is formed to be connected to the annular plate-like portion 16a and the inner edge side of the plate-like portion 16a and engage with the shaft member 10. A plurality of possible engagement pieces 16b. According to this configuration, the retaining member 16 can be attached to the shaft member 10 reliably and easily.

  Further, the receiving portion 24 is provided with a concave portion 24b so as to be recessed upward from a flat surface 24a facing the plate-like portion 16a. According to this configuration, the retaining member 16 can be prevented from sticking to the flat surface 24 a of the receiving portion 24. Further, the recess 24 b can be used as a pool of the lubricant 61.

  Further, in the rotary electrical component 1 of the first embodiment, the rotation detecting means 30 includes a slider 32 that rotates together with the shaft member 10 and fixed contacts 33a, 34a, and 35a with which the slider 32 slides. ing. According to this configuration, the rotation detection unit 30 can be configured with a simple configuration.

  The rotary electric component 1 of the present embodiment includes a bearing member 20 having a cylindrical portion 25, a shaft member 10 that is rotatably supported by the bearing member 20, and a shaft member that is fixed to a lower portion of the shaft member 10. The retaining member 16 that prevents the shaft 10 from coming off from the bearing member 20, the rotation detecting means 30 that detects the rotational motion of the shaft member 10, and the pressing of the shaft member 10 in the direction of the axis 10 a provided below the shaft member 10 In the rotary electric component 1 including the push switch 40 driven in accordance with the operation, the bearing member 20 includes a second bearing portion 22 that rotatably guides the shaft member 10 and a lower portion of the second bearing portion 22. And a receiving portion 24 having a flat surface 24a on the ceiling portion 27a of the receiving portion 27, and the retaining member 16 is Accommodating portion has a receiving portion 24 can abut the opposed plate-like portion 16a while being disposed on 27, the lubricant 61 is provided between the receiving portion 24 and the plate-like portion 16a.

  According to this configuration, since the lubricant 61 is provided between the receiving portion 24 of the bearing member 20 and the plate-like portion 16a of the retaining member 16, a pressing operation of the shaft member 10 in the direction of the axis 10a. Is released to return to the initial state, and the sound when the plate-like portion 16a abuts on the receiving portion 24 can be reduced.

  Further, in the rotary electrical component 1 of the present embodiment, the shaft member 10 has an engagement shaft portion 10b that engages with the engagement piece 16b of the retaining member 16 on the lower end side, and an upper side of the plate-like portion 16a. The retaining member 16 is fixed to the shaft member 10 in a state where the plate-like portion 16a is in contact with the restricting portion 10c.

  According to this configuration, since the attachment position of the retaining member 16 with respect to the shaft member 10 is determined, variation in the amount by which the shaft member 10 protrudes from the bearing member 20 can be suppressed.

  In the rotating electrical component 1 of the present embodiment, the receiving portion 24 is provided with a recess 24b so as to be recessed upward from a flat surface 24a facing the plate-like portion 16a, and the lubricant 61 is placed in the recess 24b. Is retained.

  According to this configuration, since the recess 24 b is formed in the receiving portion 24, it is possible to prevent the retaining member 16 from sticking to the flat surface 24 a of the receiving portion 24 by the lubricant 61. Further, the recess 24 b can be used as a pool of the lubricant 61.

  Further, in the rotary electric component 1 of the present embodiment, the recess 24b is covered with the plate-like portion 16a in an initial state where the pressing operation to the shaft member 10 is not performed.

  According to this configuration, since the concave portion 24b that holds the lubricant 61 is covered with the plate-like portion 16a in the initial state, the flow of the lubricant 61 from the concave portion 24b can be reduced, and the lubricant 61 can be held for a long period of time. Thus, the sound can be suppressed.

  Further, in the rotary electrical component 1 of the present embodiment, the inner surface of the cylindrical portion 25 has a dimension in a direction perpendicular to the rotation center axis of the shaft member 10 at a position between the tip portion 25a and the accommodating portion 27. A step portion 23 formed to be larger on the distal end portion 25a side than the accommodating portion 27 side is provided, and the shaft member 10 has a thin shaft portion 10d that can be inserted into the lower side of the step portion 23, and a tubular portion. A thick shaft portion 10e that is thicker than the thin shaft portion 10d, and is in contact with the step portion 23 between the thin shaft portion 10d and the thick shaft portion 10e. A portion 10f is formed, and a lubricant 62 is provided between the step portion 23 and the contact portion 10f. When the shaft member 10 is pressed in the axial direction, the contact portion 10f becomes the step portion 23. Abut.

  According to this configuration, when the shaft member 10 is pressed, the contact sound is generated when the contact portion 10f of the shaft member 10 hits the step portion 23 and the movement of the shaft member 10 stops. By providing the lubricant 62 between the portion 23 and the contact portion 10f, the contact noise can be reduced. Further, since the step portion 23 and the contact portion 10f can be provided at a position separated from the distal end portion 25a of the cylindrical portion 25, the lubricant 62 hardly flows out to the outside.

  As described above, the rotary electrical component 1 according to the first embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Can be implemented. For example, the present invention can be modified as follows, and these also belong to the technical scope of the present invention.

  (1) In the present embodiment, the retaining member 16 includes the plate-like portion 16a and the engagement piece 16b. However, the engagement piece 16b that engages with the engagement shaft portion 10b is screwed to another engagement or the like. You may change into the structure by a stop method.

  (2) In the present embodiment, it is only necessary that the receiving portion 24 having the flat surface 24 a is provided in the accommodating portion 27, and the ceiling portion 27 a may have a step at a position other than the receiving portion 24. Further, the wall surface other than the receiving portion 24 may be dome-shaped.

  (3) In the present embodiment, the inner surface of the first bearing portion 21 provided so as to be slidable with the first shaft portion 11 of the shaft member 10 has a polygonal cross-sectional shape, and is in sliding contact with the second shaft portion 12. Although the inner surface of the 2nd bearing part 22 provided so that it has a circular cross-sectional shape, it is not limited to this. For example, in a bearing member formed by cutting, the inner surface of the first bearing portion provided so as to be slidable in contact with the first shaft portion 11 of the shaft member 10 has a circular cross-sectional shape, and a spiral relief groove Can be provided.

[Second Embodiment]
FIG. 11 is a perspective view showing the rotating electrical component 2 according to the second embodiment of the present invention. FIG. 12 is an exploded perspective view of the rotary electrical component 2 as viewed obliquely from above. FIG. 13 is an exploded perspective view of the rotary electrical component 2 as viewed obliquely from below. FIG. 14 is a plan view showing the rotary electrical component 2. FIG. 15 is a front view showing the rotary electrical component 2. 16 is a cross-sectional view taken along line XVI-XVI of FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 18 is a cross-sectional view showing a state where the shaft member 10 is pressed in the direction of the axis 10a in the same cross section as FIG. 19 is an external view showing the bearing member 20, FIG. 19A is a plan view, and FIG. 19B is a bottom view. 20 is an external view showing the shaft member 10, FIG. 20 (a) is a side view, and FIG. 20 (b) is a bottom view.

  The rotary electrical component 2 of the second embodiment has substantially the same appearance as the rotary electrical component 1 of the first embodiment. As shown in FIGS. 11 and 12, the shape of each member constituting the rotary electrical component 2 is slightly different from that of the rotary electrical component 1, but the same function and the same material as those of the first embodiment are used. The same reference numerals as in the embodiment are used.

  As shown in FIGS. 11 to 17, the rotary electrical component 2 according to the second embodiment of the present invention includes a shaft member 10, a bearing member 20, a rotation detection means 30, and a push switch 40, and a case member. 50. The rotating member 31 and a driving body 75 fixed to the tip of the shaft member 10 inserted through the rotating member 31 are provided.

  The shaft member 10 is made of a metal material such as aluminum by cutting, for example, and has a thin shaft portion 10d and a thick shaft portion 10e having a circular cross section, and an operation portion 13 formed in a shape larger than the thick shaft portion 10e. have. As shown in FIGS. 12 and 13, the shaft member 10 is formed so that the upper side is thicker in the direction of the axis 10 a of the shaft member 10. In this embodiment, the thin shaft portion 10 d replaces the second shaft portion 12. It is composed. A thick shaft portion 10 e that is thicker than the second shaft portion 12 is provided with a hook-shaped portion 10 g, and the outer periphery of the circular hook-shaped portion 10 g constitutes the first shaft portion 11. As shown in FIGS. 13 and 20, a contact portion 10f is formed between the thin shaft portion 10d and the thick shaft portion 10e. An engaging portion 14 is formed near the lower end of the shaft member 10.

  The bearing member 20 is made of metal, for example, made of zinc die cast. As shown in FIGS. 11 to 15, the tubular portion 25 and a rectangular flange portion 26 provided on the lower side of the tubular portion 25. And have. As shown in FIGS. 12 and 19, the bearing member 20 of the present embodiment is provided with a first bearing portion 21 on the distal end portion 25 a side of the tubular portion 25. Further, as shown in FIGS. 13 and 17, the bearing member 20 has a protruding wall 28 that protrudes inward from the inner peripheral surface of the tubular portion 25 in the direction of the axis 10 a of the shaft member 10 rather than the first bearing portion 21. The circular inner peripheral surface of the protruding wall 28 forms the second bearing portion 22 provided at the lower portion. Then, due to the protruding wall 28, the dimension in the direction orthogonal to the rotation center axis of the shaft member 10 is second on the inner surface of the cylindrical portion 25 at a position between the first bearing portion 21 and the second bearing portion 22. A step portion 23 is provided so as to be larger on the first bearing portion 21 side than on the bearing portion 22 side. Further, the bearing member 20 is provided with an accommodating portion 27 formed below the second bearing portion 22 so as to be larger than the second bearing portion 22. The bearing member 20 has a guide portion 20b that is positioned below the second bearing portion 22 and rotatably holds a rotating member 31 described later.

  The first shaft portion 11 of the shaft member 10 is disposed so as to be slidably contacted with the first bearing portion 21, and the second shaft portion 12 is disposed so as to be slidably contacted with the second bearing portion 22. The shaft member 10 is rotatably supported by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20. As will be described later, the shaft member 10 is supported so as to be movable in the direction of the axis 10a when the operation portion 13 is pressed. As shown in FIGS. 16 and 17, a lubricant 63 is provided at least between the step portion 23 and the contact portion 10f. The lubricant 63 extends in a thin film shape and is provided over the inner surface of the cylindrical portion 25 from the first bearing portion 21 to the second bearing portion 22. Although not shown, the lubricant 63 is also provided in the guide portion 20 b of the storage portion 27.

  The driving body 75 is formed by molding a synthetic resin material. As shown in FIG. 12, the drive body 75 is formed in a shape in which the engagement portion 14 provided at the distal end portion of the shaft member 10 is fitted. When the engaging portion 14 of the shaft member 10 is press-fitted into the driving body 75 and the distal end portion (lower end portion) of the engaging portion 14 is deformed, the driving body 75 is moved from the engaging portion 14 as shown in FIG. It is configured so that it cannot be easily removed. With respect to the rotation of the shaft member 10, the drive body 75 rotates as a unit. Further, as shown in FIGS. 12 and 13, the driving body 75 has a shape that is slidably contacted with the rotating member 31 described later in the vertical direction. Further, the concave portion 75 a on the outer peripheral side of the driving body 75 has a shape that engages with the convex portion 31 d of the housing wall of the rotating member 31 in the circumferential direction. By fitting the driving body 75 to the engaging portion 14 of the shaft member 10, the rotation operation of the shaft member 10 is transmitted to the rotation member 31, and a desired operation of the shaft member 10 with respect to the rotation member 31 is enabled.

  The rotation detection unit 30 detects the rotation operation of the shaft member 10, and includes a rotation member 31 that can rotate around the axis 10 a of the shaft member 10, a slider 32 attached to the rotation member 31, and a fixed contact. And conductive members 33, 34, and 35 having 33a, 34a, and 35a. The rotating member 31 is made of a synthetic resin material and includes an accommodation wall that accommodates the driving body 75 below the ceiling wall 31a in which a through hole is formed. The housing wall has the convex portion 31d, so that the driving body 75 can be moved when the driving body 75 moves downward, and when the driving body 75 rotates about the axis 10a, the housing wall is integrated with the driving body 75. The rotary member 31 is rotated. The slider 32 is obtained by processing a metal leaf spring. The rotating member 31 has an uneven portion 31b. The metal spring member 36 is fixed to the bearing member 20 so as to be elastically contactable with the uneven portion 31b.

  The conductive members 33, 34, and 35 are obtained by processing a conductive metal plate. The conductive members 33, 34, and 35 are fixed to a first case member 51 described later, and fixed contacts 33a, 34a, and 35a of the conductive members 33, 34, and 35 are divided and arranged in the circumferential direction. In addition, the conductive members 33, 34, and 35 include terminal portions 33 b, 34 b, and 35 b that are exposed to the outside from the first case member 51.

  The push switch 40 includes a movable contact member 41, a fixed contact member 42, a support member 43, and an elastic member 45. The movable contact member 41 is made of a conductive metal plate, and as shown in FIGS. 12 and 13, includes a movable contact portion 41a and a support portion 41b that supports the movable contact portion 41a so as to be elastically deformable. The fixed contact member 42 is made of a conductive metal plate, is fixed to a second case member 52 described later, and has a fixed contact portion 42a and a terminal portion 42b which are switching fixed contacts. The support member 43 is made of a conductive metal plate, is fixed to a second case member 52 described later, and has a support contact portion 43a and a terminal portion 43b which are common fixed contacts. The elastic member 45 is made of, for example, silicone rubber formed into a dome shape, and can be elastically deformed in the vertical direction. The elastic member 45 has a function of a return member (biasing member) for returning the pressed shaft member 10 to the initial state.

  The case member 50 includes a first case member 51 that holds the conductive members 33, 34, and 35, a second case member 52 that holds the fixed contact member 42 and the support member 43, and the first case member 51 and the second case member. 52 and a cover 53 that holds the bearing member 20 together.

  The first case member 51 is made of an insulating synthetic resin material, and is insert-molded integrally with the conductive members 33, 34, and 35 as shown in FIGS. 12 and 13. The second case member 52 is made of an insulating synthetic resin material, and is insert-molded integrally with the fixed contact member 42 and the support member 43.

  The cover 53 is obtained by bending a metal plate. The cover 53 is bent so as to sandwich the flange portion 26 of the bearing member 20, the first case member 51, and the second case member 52.

  The rotary electrical component 2 according to the second embodiment has the same function as the rotary electrical component 1 according to the first embodiment, and can rotate and press the shaft member 10 according to the operation. Output can be obtained.

  Next, the characteristic part of the rotary electrical component 2 of this embodiment will be described in detail.

  In the rotating electrical component 2 of the present embodiment, the shaft member 10 is directly rotatably supported by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20, so that the shaft member 10, the bearing member 20, Since no other member is interposed between them, the backlash of the shaft member 10 can be reduced. The shaft member 10 is provided with a hook-shaped portion 10 g corresponding to the first bearing portion 21, and the hook-shaped portion 10 g constitutes the first shaft portion 11. In the bearing member 20, a protruding wall 28 that protrudes inward from the inner peripheral surface of the cylindrical portion 25 is provided corresponding to the second shaft portion 12, and the inner peripheral surface of the protruding wall 28 defines the second bearing portion 22. It is composed. Since the bearing member 20 and the shaft-supported portion of the shaft member 10 are determined, rattling can be further suppressed by increasing the dimensional accuracy of the portion. Further, since the hook-shaped portion 10g and the protruding wall 28 are provided in different members, the configuration of the mold for manufacturing the bearing member 20 is not complicated, and can be easily processed.

  Also in the rotary electric component 2 of the present embodiment, the clearance between the rotating member 31 and the guide portion 20b is the clearance between the first shaft portion 11 and the first bearing portion 21, and the second shaft portion 12. And the clearance between the second bearing portion 22 is larger. Thus, the rotation operation of the rotation member 31 in the guide portion 20b does not affect the shaft member 10, and the shaft member 10 is reliably guided to be rotatable by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20. can do. In addition, each member arrange | positioned at the accommodating part 27 of the bearing member 20 exists in the state urged | biased by the fixed or elastic force, and does not produce rattling.

  Further, as shown in FIGS. 16 and 17, a contact portion 10f facing the step portion 23 of the bearing member 20 is formed in the shaft member 10, and a lubricant 63 is provided between the step portion 23 and the contact portion 10f. Is provided. When the shaft member 10 is pressed in the axial direction, as shown in FIG. 18, the contact portion 10 f is configured to contact the stepped portion 23 after the push switch 40 is driven. When the shaft member 10 is pressed, when the contact portion 10f of the shaft member 10 hits the step portion 23 and the movement of the shaft member 10 stops, a contact sound is generated. This contact noise can be reduced by providing the lubricant 63 between 10f. According to such a configuration, it is considered that a braking force for buffering the movement of the shaft member 10 is generated. Moreover, since the step part 23 and the contact part 10f can be provided in the position away from the 1st bearing part 21 of the cylindrical part 25, the lubricant 63 cannot flow out easily.

  Further, as shown in FIGS. 16 and 19, the projecting wall 28 of the bearing member 20 is formed with a through portion 28 a communicating with the space located between the first bearing portion 21 and the second bearing portion 22. A lubricant 63 is provided between the first shaft portion 11 and the first bearing portion 21 and between the second shaft portion 12 and the second bearing portion 22. Even if the portion located between the first bearing portion 21 and the second bearing portion 22 becomes a closed space due to the lubricant, the air in the space passes through the through portion 28 a formed in the protruding wall 28. You can go in and out.

  The driving body 75 receives the urging force of the elastic member 45, and as shown in FIG. 16, can be brought into contact with the ceiling wall 31a of the rotating member 31 in the initial state, and restricts the upward movement of the shaft member 10. ing. Furthermore, since the rotating member 31 and the driving body 75 are made of a synthetic resin material, the collision sound generated when the driving body 75 comes into contact with the ceiling wall 31a is different from the collision sound between metals. Therefore, when the shaft member 10 is returned to the initial state shown in FIGS. 16 and 17 by the elastic member 45 from the pressing operation state shown in FIG. 18 where the push switch 40 is driven, the driving body 75 vigorously rotates. Even if it abuts against the ceiling wall 31a, the collision sound can be reduced. Further, part of the kinetic energy for returning the shaft member 10 to the initial state is transmitted to the rotating member 31 in contact with the driving body 75 and absorbed by the spring member 36 urging the rotating member 31. The impact sound is even smaller.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  The rotary electric component 2 according to the second embodiment includes a bearing member 20 having a cylindrical portion 25, a shaft member 10 that is rotatably held by the bearing member 20, and a rotation that detects a rotation operation of the shaft member 10. Detection means 30. The bearing member 20 includes a first bearing portion 21 located on the distal end side of the tubular portion 25, a second bearing portion 22 located below the first bearing portion 21 in the axial direction of the shaft member 10, and have. Furthermore, the shaft member 10 includes a first shaft portion 11 disposed so as to be slidably contacted with the first bearing portion 21 and a second shaft portion disposed so as to be slidably contacted with the second bearing portion 22. 12 and is rotatably supported by the bearing member 20.

  According to this configuration, since the shaft member 10 is rotatably supported by the bearing member 20, no other member is interposed between the shaft member 10 and the bearing member 20. Can be reduced. Therefore, the quality of the rotary electrical component 2 is improved.

  Further, in the rotating electrical component 2 of the present embodiment, a rotating member 31 that rotates together with the shaft member 10 is provided below the second bearing portion 22 of the bearing member 20, and the bearing member 20 is provided by the second bearing portion 22. Also has a guide portion 20b that is positioned below and rotatably holds the rotating member 31. The clearance between the rotating member 31 and the guide portion 20b is based on the clearance between the first shaft portion 11 and the first bearing portion 21 and the clearance between the second shaft portion 12 and the second bearing portion 22. Is also big.

  According to this configuration, the shaft member 10 can be reliably guided to be rotatable by the first bearing portion 21 and the second bearing portion 22 of the bearing member 20.

  Further, in the rotary electric component 2 of the present embodiment, the inner surface of the cylindrical portion 25 is orthogonal to the rotation center axis of the shaft member 10 at a position between the first bearing portion 21 and the second bearing portion 22. A step portion 23 is provided so that the dimension in the direction is larger on the first bearing portion 21 side than on the second bearing portion 22 side. Furthermore, the shaft member 10 has a thin shaft portion 10d that can be inserted into the lower side of the step portion 23, and a thick shaft that can be inserted into the first bearing portion 21 side of the tubular portion 25 and is thicker than the thin shaft portion 10d. And a contact portion 10f that faces the step portion 23 is formed between the thin shaft portion 10d and the thick shaft portion 10e. A lubricant 63 is provided between the stepped portion 23 and the contact portion 10f. When the shaft member 10 is pressed in the direction of the axis 10a, the contact portion 10f may contact the stepped portion 23. Is preferred.

  When the shaft member 10 is pressed, when the contact portion 10f of the shaft member 10 hits the step portion 23 and the movement of the shaft member 10 stops, a contact sound is generated. This contact noise can be reduced by providing the lubricant 63 between 10f. Moreover, since the step part 23 and the contact part 10f can be provided in the position away from the 1st bearing part 21 of the cylindrical part 25, the lubricant 63 cannot flow out easily.

  Further, in the rotary electrical component 2 of the second embodiment, the shaft member 10 is provided with a hook-shaped portion 10 g corresponding to the first bearing portion 21, and the hook-shaped portion 10 g constitutes the first shaft portion 11. ing. In the bearing member 20, a protruding wall 28 that protrudes inward from the inner peripheral surface of the cylindrical portion 25 is provided corresponding to the second shaft portion 12, and the protruding wall 28 constitutes the second bearing portion 22. .

  According to this configuration, the bearing member 20 and the shaft-supported portion of the shaft member 10 are determined, so that the backlash can be further suppressed by increasing the dimensional accuracy of the portion. In addition, since the hook-shaped portion 10g and the protruding wall 28 are provided on different members, the configuration of the mold is not complicated and can be easily processed.

  Further, below the shaft member 10, a push switch 40 is provided that is driven by a pressing operation in the direction of the axis 10a. The bearing member 20 supports the shaft member 10 so as to be movable in the direction of the axis 10a, and protrudes. The wall 28 is formed with a penetrating portion 28 a that communicates with a space located between the first bearing portion 21 and the second bearing portion 22. A lubricant 63 is provided at least between the first shaft portion 11 and the first bearing portion 21 and between the second shaft portion 12 and the second bearing portion 22.

  According to this configuration, even if the portion positioned between the first bearing portion 21 and the second bearing portion 22 becomes a closed space by the lubricant 63, the air in the space enters the protruding wall 28. Since it can enter / exit via the formed penetration part 28a, it does not affect the pressing operation at the time of driving the push switch 40, and a favorable pressing operation is possible.

  Further, the rotary electric component 2 of the present embodiment is inserted into the rotary member 31 made of a synthetic resin material having a ceiling wall 31 a through which the thin shaft portion 10 d on the lower side of the shaft member 10 is inserted, and the rotary member 31. And a driving body 75 made of a synthetic resin material fixed to the tip of the shaft member 10. Further, the driving body 75 engages with the rotating member 31 in the circumferential direction to transmit the rotating operation of the shaft member 10 to the rotating member 31, and the driving body 75 can come into contact with the ceiling wall 31 a of the rotating member 31. Thus, the upward movement of the shaft member 10 is restricted.

  According to this configuration, when the shaft member 10 returns to the initial state after the push switch 40 is driven, even if the driver 75 vigorously contacts the ceiling wall 31 a of the rotating member 31, the rotating member 31. And since the drive body 75 is comprised with the synthetic resin material, both collision noise can be made small.

  Further, in the rotary electrical component 2 of the second embodiment, the rotation detecting means 30 includes a slider 32 that rotates together with the shaft member 10 and fixed contacts 33a, 34a, and 35a with which the slider 32 slides. . According to this configuration, the rotation detection unit 30 can be configured with a simple configuration.

  As described above, the rotary electric component 2 according to the second embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Can be implemented. For example, the present invention can be modified as follows, and these also belong to the technical scope of the present invention.

  (1) In the present embodiment, the driving body 75 is fitted to the engaging portion 14 of the shaft member 10, but a fixing member such as the retaining member 16 of the first embodiment is provided below the driving body 75. You may make it the structure attached to.

  (2) In this embodiment, although the penetration part 28a was formed in the protrusion wall 28, you may change the shape and number as needed. Moreover, the cross-sectional shape of the inner surface of the protruding wall 28 may be a polygonal shape like the first bearing portion 21 of the first embodiment, and a through portion may be formed at the corner portion.

  (3) In 1st Embodiment and 2nd Embodiment of this invention, although demonstrated as a rotary electrical component provided with the push switch 40 driven with the press operation of the shaft member 10, it is not limited to this. . Even in a rotary electrical component that does not include the push switch 40, the backlash of the shaft member 10 can be reduced by directly supporting the shaft member 10 by the bearing member 20 so as to be rotatable. The quality is improved.

DESCRIPTION OF SYMBOLS 1 Rotation type electrical component 2 Rotation type electrical component 10 Shaft member 10a Axis line 10b Engagement shaft portion 10c Restriction portion 10d Fine shaft portion 10e Thick shaft portion 10f Abutting portion 10g Hook portion 11 First shaft portion 12 Second shaft portion 13 Operation part 14 Engagement part 15 Drive body 16 Retaining member 16a Plate-like part 16b Engagement piece 20 Bearing member 20b Guide part 21 First bearing part 22 Second bearing part 23 Step part 24 Receiving part 24a Flat surface 24b Concave part 25 Cylindrical portion 25a Tip portion 26 Flange portion 27 Housing portion 27a Ceiling portion 28 Protruding wall 28a Through portion 30 Rotation detecting means 31 Rotating member 31a Ceiling wall 31b Uneven portion 31c Protrusion 31d Convex portion 32 Slider 33 Conductive member 33a Fixed contact 33b Terminal part 34 Conductive member 34a Fixed contact 34b Terminal part 35 Conductive member 35a Fixed contact 35b Terminal part 3 Spring member 40 Push switch 41 Movable contact member 41a Movable contact part 41b Support part 42 Fixed contact member 42a Fixed contact part 42b Terminal part 43 Support member 43a Support contact part 43b Terminal part 45 Elastic member 45a Central part 45b Dome part 50 Case member 51 First case member 52 Second case member 53 Cover 61 Lubricant 62 Lubricant 63 Lubricant 75 Driver 75a Recessed part

Claims (11)

In a rotary electric component comprising a bearing member having a cylindrical portion, a shaft member rotatably held by the bearing member, and a rotation detecting means for detecting a rotation operation of the shaft member,
The bearing member has a first bearing portion located on the distal end side of the cylindrical portion, and a second bearing portion located lower in the axial direction of the shaft member than the first bearing portion,
The shaft member includes a first shaft portion disposed so as to be slidably contacted with the first bearing portion, and a second shaft portion disposed so as to be slidably contacted with the second bearing portion. And a rotary electric component that is rotatably supported by the bearing member. A rotating member that rotates together with the shaft member is provided below the second bearing portion of the bearing member;
The bearing member has a guide portion that is positioned below the second bearing portion and rotatably holds the rotating member;
The clearance between the rotating member and the guide portion is based on the clearance between the first shaft portion and the first bearing portion and the clearance between the second shaft portion and the second bearing portion. The rotating electrical component according to claim 1, wherein The first shaft portion of the shaft member has a circular cross-sectional shape,
The inner surface of the first bearing part has a polygonal shape with a plurality of sides in cross-sectional shape,
The rotary electric according to claim 1 or 2, wherein the first shaft portion is rotatably guided to portions corresponding to a plurality of sides constituting the polygonal shape of the first bearing portion. parts. Below the shaft member, a push switch that is driven in accordance with a pressing operation in the axial direction is provided,
The bearing member supports the shaft member to be movable in the axial direction,
The lubricant is provided at least between the first shaft portion and the first bearing portion and between the second shaft portion and the second bearing portion. Item 4. The rotating electrical component according to Item 3. On the inner surface of the cylindrical portion, the dimension in the direction orthogonal to the rotation center axis of the shaft member is greater than the second bearing portion side at a position between the first bearing portion and the second bearing portion. A step portion formed to be large on the first bearing portion side is provided,
The shaft member, a thin shaft portion that can be inserted into the lower side of the stepped portion, a thick shaft portion that can be inserted into the cylindrical portion on the first bearing portion side and is thicker than the thin shaft portion, And a contact portion is formed between the thin shaft portion and the thick shaft portion so as to face the stepped portion.
A lubricant is provided between the step portion and the contact portion, and the contact portion contacts the step portion when the shaft member is pressed in the axial direction. The rotating electrical component according to claim 4. The bearing member is provided with a receiving portion formed below the second bearing portion so as to be larger than the second bearing portion, and a receiving portion having a flat surface on the ceiling portion of the receiving portion. ,
The lower end portion of the shaft member is located in the accommodating portion, and a retaining member is fixed.
6. The lubricant according to claim 4, wherein the retaining member is disposed so as to face the receiving portion so as to be in contact with the receiving portion, and a lubricant is provided between the retaining member and the receiving portion. Rotating electrical component as described.   The retaining member is made of a metal material having an annular plate-shaped portion, and the receiving portion is provided with a recess so as to be recessed upward from the flat surface facing the plate-shaped portion. The rotating electrical component according to claim 6. The shaft member is provided with a hook-shaped portion corresponding to the first bearing portion, and the hook-shaped portion constitutes the first shaft portion,
In the bearing member, a protruding wall protruding inward from an inner peripheral surface of the cylindrical portion is provided corresponding to the second shaft portion, and the protruding wall constitutes the second bearing portion. The rotating electrical component according to claim 1. Below the shaft member, a push switch that is driven in accordance with a pressing operation in the axial direction is provided,
The bearing member supports the shaft member to be movable in the axial direction,
The projecting wall is formed with a through portion communicating with a space located between the first bearing portion and the second bearing portion,
The lubricant is provided at least between the first shaft portion and the first bearing portion and between the second shaft portion and the second bearing portion. Rotating electrical parts.   A rotating member made of a synthetic resin material having a ceiling wall through which the lower end portion of the shaft member is inserted, and a drive made of a synthetic resin material fixed to the tip portion of the shaft member inserted through the rotating member And the drive body engages with the rotation member in the circumferential direction to transmit the rotation operation of the shaft member to the rotation member, and the drive body includes the ceiling wall of the rotation member. The rotary electric component according to claim 9, wherein the shaft member is allowed to abut on the upper surface and restricts upward movement of the shaft member. The rotary type according to any one of claims 1 to 10, wherein the rotation detection means includes a slider that rotates together with the shaft member, and a fixed contact that the slider contacts. Electrical component.