JP2017068951A - Rotational type electric component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotational type electric component that can suppress noise occurring when a press operation to a shaft member is released and an initial state is restored, and enhance an initial state.SOLUTION: A rotational type electric component includes: a retaining member 16 for preventing a shaft member 10 from coming out of a bearing member 20; rotation detecting means 30 for detecting the rotational operation of the shaft member 10; and a push switch 40 which is provided below the shaft member 10 and driven in connection with the press operation in the axial line direction of the shaft member 10. The bearing member 20 has a second bearing portion 22 for rotatably guiding the shaft member 10, and a housing portion 27 which is formed at the lower side of the second bearing portion 22 to be larger than the second bearing portion 22. A reception portion 24 having a flat surface 24a is provided to a ceiling portion 27a of the housing portion 27. The retaining member 16 has a plate-shaped portion 16a which is arranged in the housing portion 27 and face a reception portion 24 so as to be capable of contacting the reception portion 24, and lubricant 61 is provided between the reception portion 24 and the plate-like portion 16a.SELECTED DRAWING: Figure 6

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 electrical component with a built-in push switch that detects a pressing operation on the operating 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. 11 is an exploded perspective view showing a conventional rotating electrical component 900. FIG. 12 is a cross-sectional view showing a conventional rotating electrical component 900. As shown in FIG. 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 away 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 separated from each other. It becomes conductive and 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, when the pressing operation of the operation shaft (shaft member) in the axial direction is released, the shaft member returns to the initial state, and the retaining ring attached to the shaft member comes into contact with the bearing member, and the sound is generated. Occurring and degrading the quality. In particular, the contact noise increases when the bearing member and the retaining ring are made of a metal material.

  The present invention solves the above-described problems, and provides a rotating electrical component capable of improving the quality by suppressing the sound generated when the pressing operation to the shaft member is released to return to the initial state. The purpose is to do.

  The rotating electrical 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 shaft member fixed to a lower portion of the shaft member so that the shaft member comes out of the bearing member. A retaining member that prevents the shaft member from rotating, a rotation detecting means that detects the rotational motion of the shaft member, and a push switch that is provided below the shaft member and is driven by a pressing operation in the axial direction of the shaft member. In the rotating electrical component provided, the bearing member includes a bearing portion that rotatably guides the shaft member, and a receiving portion that is formed below the bearing portion so as to be larger than the bearing portion, A receiving portion having a flat surface is provided on the ceiling portion of the accommodating portion, and the retaining member has a plate-like portion that is disposed in the accommodating portion and faces the receiving portion so as to be in contact with the receiving portion, The receiving part and the plate Wherein the lubricant is provided between the parts.

  According to this configuration, since the lubricant is provided between the receiving portion of the bearing member and the plate-like portion of the retaining member, the pressing operation in the axial direction of the shaft member is released to the initial state. The sound when the plate-like portion comes into contact with the receiving portion can be reduced.

  In the rotary electric component according to the present invention, the retaining member is made of a metal material, and is formed to be connected to the annular plate-like portion and the inner edge side of the plate-like portion and engageable with the shaft member. A plurality of engagement pieces.

  According to this configuration, it is possible to reliably and easily attach the retaining member to the shaft member.

  Further, in the rotary electric component according to the present invention, the shaft member includes an engagement shaft portion that engages with the engagement piece of the retaining member on a lower end portion side, and a restriction portion that contacts the upper side of the plate-like portion. The retaining member is fixed to the shaft member in a state where the plate-like portion is in contact with the restricting portion.

  According to this configuration, since the attachment position of the retaining member with respect to the shaft member is determined, variation in the amount of the shaft member protruding from the bearing member can be suppressed.

  In the rotary electric component of the present invention, the receiving portion is provided with a recess so as to be recessed upward from the flat surface facing the plate-like portion, and the lubricant is held in the recess. Preferably it is.

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

  In the rotating electrical component of the present invention, it is preferable that the concave portion is covered with the plate-like portion in an initial state in which no pressing operation is performed on the shaft member.

  According to this configuration, since the concave portion that holds the lubricant is covered with the plate-like portion in the initial state, the lubricant can be prevented from flowing out of the concave portion, and the lubricant can be held for a long period of time to suppress noise. It can be performed.

  Further, in the rotary electric component of the present invention, the inner surface of the cylindrical portion has a dimension in the direction perpendicular to the rotation center axis of the shaft member at a position between the tip portion and the housing portion. A step portion formed so as to be larger on the tip portion side than on the side, and a thin shaft portion that can be inserted into a lower side of the step portion on the shaft member, and the tip portion of the tubular portion A thick shaft portion thicker than the thin shaft portion is provided, and a contact portion is formed between the thin shaft portion and the thick shaft portion so as to face the stepped portion, It is preferable that 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. is there.

  According to this configuration, when the shaft member is pressed, a contact sound is generated when the contact portion of the shaft member hits the step portion and the movement of the shaft member stops. This contact noise can be reduced by providing a lubricant between the two. Further, since the step portion and the contact portion can be provided at a position separated from the tip portion of the cylindrical portion, the lubricant is unlikely to flow out to the outside.

  According to the present invention, the bearing member having a cylindrical portion includes a bearing portion that rotatably guides the shaft member, and a housing portion that is formed below the bearing portion so as to be larger than the bearing portion. The receiving part which has a flat surface is provided in the ceiling part of the accommodating part. The retaining member has a plate-like portion that is disposed in the housing portion and faces the receiving portion so as to be in contact with the receiving portion, and a lubricant is provided between the receiving portion and the plate-like portion. Thereby, the pressing operation in the axial direction of the shaft member can be released, and the sound when the plate-like portion comes into contact with the receiving portion can be reduced. Therefore, it is possible to provide a rotary electric component capable of suppressing the sound generated when the pressing operation on the shaft member is released and returning to the initial state, thereby improving 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. 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.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 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 made of a synthetic resin. 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. Moreover, since the attachment position of the retaining member 16 with respect to the shaft member 10 is determined by the restriction portion 10c, variation in the amount of the shaft member 10 protruding 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 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 And a 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 an accommodating portion 27 that is formed below the second bearing portion 22 and is larger than the second bearing portion 22. And a receiving part 24 having a flat surface 24 a is provided on the ceiling part 27 a of the accommodating part 27. Further, the retaining member 16 has a plate-like portion 16a that is disposed in the accommodating portion 27 and faces the receiving portion 24 so as to be in contact with the receiving portion 24, and the lubricant 61 is interposed between the receiving portion 24 and the plate-like portion 16a. Is provided.

  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 (flat surface 24a) can be reduced.

  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.

  Furthermore, 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 a restriction portion 10c that abuts on the upper side of the plate-like portion 16a. The member 16 is fixed to the shaft member 10 with the plate-like portion 16a 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.

  The receiving portion 24 is preferably 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 preferably held in the recess 24b.

  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.

  Moreover, it is suitable that the recessed part 24b is covered with the plate-shaped part 16a in the 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, 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 closer to the distal end portion 25 a side than the accommodating portion 27 side at a position between the distal end portion 25 a and the accommodating portion 27. A step portion 23 formed to be large is provided, and the shaft member 10 can be inserted into the thin shaft portion 10d that can be inserted into the lower side of the step portion 23 and the tip portion 25a side of the cylindrical portion 25. A thick shaft portion 10e thicker than the thin shaft portion 10d is provided, and a contact portion 10f facing the step portion 23 is formed between the thin shaft portion 10d and the thick shaft portion 10e. A lubricant 62 is provided between the contact portion 10f and the contact portion 10f is preferably in contact with the step portion 23 when the shaft member 10 is pressed in the axial direction.

  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.

  (4) In the present embodiment, the first shaft portion 11 and the second shaft portion 12 of the shaft member 10 are directly opposed to the first bearing portion 21 and the second bearing portion 22 of the bearing member 20, respectively, and are rotatable. Although it is supposed to be guided, it is not limited to this. For example, the lower shaft portion may be indirectly guided to the bearing member via the rotating member.

DESCRIPTION OF SYMBOLS 1 Rotary electrical component 10 Shaft member 10a Axis 10b Engagement shaft part 10c Restriction part 10d Thin shaft part 10e Thick shaft part 10f Contact part 11 1st shaft part 12 2nd shaft part 13 Operation part 14 Engagement part 15 Driver DESCRIPTION OF SYMBOLS 16 Retaining member 16a Plate-shaped part 16b Engagement piece 20 Bearing member 20b Guide part 21 1st bearing part 22 2nd bearing part 23 Step part 24 Receiving part 24a Flat surface 24b Recessed part 25 Cylindrical part 25a Tip part 26 Flange part 27 Housing part 27a Ceiling part 30 Rotation detecting means 31 Rotating member 31b Uneven part 31c Protrusion 32 Slider 33 Conductive member 33a Fixed electrode 33b Terminal part 34 Conductive member 34a Fixed electrode 34b Terminal part 35 Conductive member 35a Fixed electrode 35b Terminal part 36 Spring member 40 Push switch 41 Movable contact member 41a Movable contact part 41b Support part Second fixed contact member 42a fixed contact portion 42b terminal portion 43 supporting member 43a supporting the contact portion 43b terminal portion 45 elastic member 45a central portion 45b dome portion 50 casing member 51 first case member 53 cover 61 lubricant 62 lubricant

Claims (6)

A bearing member having a tubular portion, a shaft member rotatably held by the bearing member, a retaining member fixed to a lower portion of the shaft member and preventing the shaft member from coming out of the bearing member, In a rotary electric component comprising: a rotation detection means for detecting a rotation operation of the shaft member; and a push switch provided below the shaft member and driven in accordance with a pressing operation in the axial direction of the shaft member.
The bearing member includes a bearing portion that rotatably guides the shaft member, and a receiving portion that is formed below the bearing portion so as to be larger than the bearing portion, and is flat on a ceiling portion of the receiving portion. A receiving part having a surface is provided,
The retaining member has a plate-like portion that is disposed in the housing portion and faces the receiving portion so as to be in contact with the receiving portion,
A rotary electric component, wherein a lubricant is provided between the receiving portion and the plate-like portion.   The retaining member is made of a metal material, and includes an annular plate-like portion, and a plurality of engagement pieces that are connected to the inner edge side of the plate-like portion and can be engaged with the shaft member. The rotary electrical component according to claim 1, wherein the electrical component is a rotary electrical component.   The shaft member has an engagement shaft portion that engages with the engagement piece of the retaining member on a lower end side, and a restriction portion that abuts on the upper side of the plate-shaped portion, and the retaining member is The rotary electric component according to claim 2, wherein the plate-like portion is fixed to the shaft member in a state where the plate-like portion is in contact with the restricting portion.   The concave portion is provided in the receiving portion so as to be recessed upward from the flat surface facing the plate-like portion, and the lubricant is held in the concave portion. Item 4. The rotating electrical component according to Item 3.   The rotary electric component according to claim 4, wherein the concave portion is covered with the plate-like portion in an initial state where no pressing operation is performed on the shaft member. On the inner surface of the cylindrical portion, the dimension in the direction orthogonal to the rotation center axis of the shaft member is larger on the tip portion side than on the housing portion side at a position between the tip portion and the housing portion. Is provided with a stepped portion,
The shaft member is provided with a thin shaft portion that can be inserted into the lower side of the stepped portion, and a thick shaft portion that can be inserted into the distal end side of the cylindrical portion and is thicker than the thin shaft portion. And an abutting 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 any one of claims 1 to 5.