WO2006104098A1

WO2006104098A1 - Installation structure for circular hollow cylinder body and electronic apparatus

Info

Publication number: WO2006104098A1
Application number: PCT/JP2006/306163
Authority: WO
Inventors: Hironobu Kobayashi; Sumio Hagiwara; Yoshiyuki Kawada
Original assignee: Pioneer Corporation
Priority date: 2005-03-29
Filing date: 2006-03-27
Publication date: 2006-10-05
Also published as: JPWO2006104098A1; JP4263757B2

Abstract

An installation structure for a circular hollow cylinder body, capable of preventing breakage of a circular hollow cylinder section. The installation structure (1) for a circular hollow cylinder body has a shaft section (15), a circular hollow cylinder section (16), a fastening spring (17), and a projection (18). The circular hollow cylinder section (16) is fitted on the outer periphery of the shaft section (15). A cutout (20) is formed in the fastening spring (20). The fastening spring (17) is fitted on the outer periphery of the circular hollow cylinder section (16) to urge it in the direction to reduce its diameter, fixing it to the shaft section (15). The projection (18) is projected from the outer peripheral surface of the circular hollow cylinder section (16) and is positioned in the cutout (20). The projection (18) relaxes urging force of the tightening spring (17) when the circular hollow cylinder section (16) is not fitted on the shaft section (15).

Description

Specification

Cylindrical mounting structure and electronic device

Technical field

The present invention relates to, for example, a cylindrical body mounting structure for mounting a knob or the like provided in an operation unit of various electronic devices such as an AV device to an electronic device body, and an electronic device including the cylindrical body mounting structure. Regarding equipment.

Background art

[0002] For example, an electronic device such as an AV device that reads and reproduces information recorded on an optical disc such as a CD (Compact Disk) includes a device main body and an optical disk such as a CD that is accommodated in the device main body. And a reproducing unit that reads out the optical disc force information and an operation unit that is provided on the surface of the apparatus main body and is used when performing various operations.

[0003] The operation unit described above includes a columnar shaft portion protruding from a device main body of an electronic device, a cylindrical portion fitted to the outer periphery of the shaft portion, a spring for tightening the cylindrical portion, and a knob connected to the cylindrical portion. It is equipped with. The shaft portion is provided so as to be movable along the shaft core, and is provided so as to be rotatable around the shaft core. Various switches such as a push switch that can detect the movement of the shaft portion in the axial center and an encoder that can detect the amount of rotation of the shaft portion around the shaft center are attached to the device body.

[0004] The cylindrical portion has an inner diameter substantially equal to the outer diameter of the shaft portion. The cylindrical part is provided with a plurality of slits. The cylindrical portion is fitted to the outer periphery of the shaft portion.

[0005] The spring has a C-shaped planar shape and is fitted to the outer periphery of the cylindrical portion.

The spring biases the cylindrical portion in a direction in which the inner diameter of the cylindrical portion decreases (that is, tightens the cylindrical portion). The spring fixes the cylindrical portion to the shaft portion by tightening the cylindrical portion. The knob is formed in a thick disk shape.

[0006] The operation unit described above detects that the knob has been pressed and the push switch has pressed the knob. Further, in the operation unit, the encoder detects that the knob is rotated around the axis of the shaft portion, that is, the cylindrical portion, and the shaft portion is rotated. In this way, the operation unit has various input motions. The work is done.

Disclosure of the invention

Problems to be solved by the invention

[0007] In the above-described conventional operating portion, that is, the mounting structure of the cylindrical body that fixes the cylindrical portion to the shaft portion, the cylindrical portion has been fixed to the shaft portion by providing a slit in the cylindrical portion that is tightened by a spring. For this reason, if the spring is fitted to the outer periphery of the cylindrical portion and the cylindrical portion is not fitted to the shaft portion, the spring may keep tightening the cylindrical portion for a long period of time when stored for a long time. For example, when a knob and a cylindrical part are manufactured with a resin molded product, a spring is assembled to the cylindrical part, and these are transported to the assembly line of the device body, the spring may continue to tighten the cylindrical part for a long time. Conceivable.

[0008] For this reason, for example, the spring continues to tighten the cylindrical portion for a long period of time, and the cylindrical portion may have a reduced diameter, which may make it difficult to fit the cylindrical portion to the shaft portion. In other words, the cylindrical mounting structure could be difficult to assemble. It is also possible to make the assembly easier by weakening the tightening force of the spring described above. In this case, the cylindrical portion cannot be fixed to the shaft portion, and for example, it becomes difficult to reliably input a desired operation or the like to the device body.

Accordingly, an object of the present invention is to provide, for example, a mounting structure for a cylindrical body in which the cylindrical portion can be easily attached to the shaft portion.

Means for solving the problem

[0010] In order to solve the above-described problems and achieve the object, the cylindrical body mounting structure according to the first aspect of the present invention includes a columnar shaft portion, a cylindrical shape, and a slit. A cylindrical portion that fits to the outer periphery of the shaft portion; and a fastening means that urges the cylindrical portion in a direction to reduce the diameter and fixes the cylindrical portion to the shaft portion. The mounting structure of the cylindrical body is characterized by comprising a relaxation means for relaxing an urging force in a direction of reducing the diameter of the cylindrical portion of the fastening means.

Brief Description of Drawings

FIG. 1 is a perspective view showing an AV device provided with a cylindrical mounting structure according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the composite switch of the AV device shown in FIG.

3 is a perspective view showing a shaft portion of the mounting structure of the cylindrical body of the composite switch shown in FIG. 2. FIG.

4 is a perspective view showing a cylindrical portion of the mounting structure of the composite switch shown in FIG. 2. FIG.

FIG. 5 is a perspective view showing a tightening spring of the cylindrical switch mounting structure of the composite switch shown in FIG. 2.

6 is a perspective view showing a state in which the clamping spring shown in FIG. 5 is fitted to the outer periphery of the cylindrical portion shown in FIG.

7 is a perspective view showing a state in which the cylindrical portion shown in FIG. 6 is fitted to the outer periphery of the shaft portion shown in FIG.

8 is a perspective view showing a modification of the cylindrical body mounting structure shown in FIG. 7. FIG.

FIG. 9 is a perspective view showing a modification of the shaft portion of the cylindrical body mounting structure shown in FIG. 1.

FIG. 10 is a front view of the shaft portion shown in FIG.

[FIG. 11] (a), (b), and (c) are perspective views showing a modification of the clamping spring shown in FIG. Explanation of symbols

1 AV equipment

13 Cylindrical mounting structure

15 Shaft

16 Cylindrical part

17 Clamping spring (clamping means)

18 Protrusion (relaxation means)

19 Slit

20 Notch

H Width of protrusion

h Notch width

rb Inner diameter of tightening spring (Inner diameter of tightening means)

Rb Inner diameter of tightening spring (Inner diameter of tightening means)

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described. The mounting structure of the cylindrical body according to the embodiment of the present invention is such that the cylindrical portion is reduced in diameter (the inner and outer diameters are reduced) by relaxing the force with which the relaxing means tightens the cylindrical portion of the fastening means. This prevents deformation and allows the cylindrical portion to be easily attached to the shaft portion.

[0014] Further, the fastening means may be formed in a C-shape, and the relaxing means may be a protrusion that is positioned in the notch of the fastening means.

[0015] Furthermore, the inner diameter of the fastening means may be smaller than the outer diameter of the cylindrical portion.

[0016] The width of the protrusion may be larger than the width of the notch.

Example

One embodiment of the present invention will be described with reference to FIGS. 1 to 7. An AV (Audio-Visual) device 1 as an electronic device according to an embodiment of the present invention is mounted on an instrument panel (hereinafter referred to as an instrument panel) of a car as a moving body.

[0018] As shown in FIG. 1, the AV device 1 is a device main body 2, a CD (Compact Disc) player 3 as a playback device, an MD (Mini disc) player 4 as a playback device, and a radio broadcast. A receiving AMZFM tuner 5, a display unit 6, and an operation unit 7 are provided.

[0019] The device body 2 is formed in a box shape and attached to the above-described instrument panel. A CD slot 8 and an MD slot 9 are opened on one surface 2a (hereinafter referred to as the front face) located on the front side in FIG. The front surface 2a is a surface that is exposed to the outside and faces the occupant (also referred to as a user) when the device body 2 is attached to the instrument panel. The CD inlet 8 passes the CD inside and inserts the CD into and out of the main body 2, that is, the CD player 3. The MD inlet 9 passes the MD inside, and puts the MD in and out of the device body 2, that is, the MD player 4.

[0020] The CD player 3 reads the information of the CD inserted into the device body 2 and outputs it as sound. The MD player 4 reads the MD information inserted in the device body 2 and outputs it as sound. AMZFM tuner 5 receives a radio broadcast and outputs it as sound. These players 3 and 4 and the tuner 5 operate when a user presses a push button 11 or the like, which will be described later, provided on the operation unit 7.

[0021] The display unit 6 displays information including a fluorescent display tube attached to the front surface 2a described above. The display panel 10 is provided. The display unit 3 displays on the display panel 10 information such as the CD or MD program being played and the name of the broadcasting station being received by the tuner 5.

The operation unit 7 includes a plurality of push buttons 11, a single composite switch 12, and the like. The push button 11 is provided on the front surface 2 a of the device body 2. The push button 11 is operated by being pressed by the user. By operating these push buttons 11, the various players 3 and 4 and the tuner 5 and the like housed in the device main body 3 operate.

The composite switch 12 is used to turn on / off the power of the entire AV device 1 and adjust the volume of the program being played back or received. As shown in FIG. 2, the composite switch 12 includes a cylindrical mounting structure (hereinafter simply referred to as a mounting structure) 13 and a knob 14.

As shown in FIG. 2, the mounting structure 13 includes a shaft portion 15, a cylindrical portion 16, a tightening spring 17 as a tightening means, and a protrusion 18 as a relaxing means. As shown in FIG. 3, the shaft portion 15 is formed in a cylindrical shape and is attached to the device main body 2. The shaft portion 15 is provided on the device main body 2 so as to be movable along the shaft core P, and is provided around the shaft core P so as to rotate freely. The shaft portion 15 is biased in a direction protruding from the device body 2. Further, around the shaft portion 15, a push switch capable of detecting that the shaft portion 15 has moved along the shaft core P in a direction to sag in the front surface 2a of the device body 2 against the biasing force, An encoder capable of detecting the amount of rotation around the axis P of the shaft portion 15 is provided.

The cylindrical portion 16 is formed in a cylindrical shape as shown in FIG. The inner diameter Ra of the cylindrical portion 16 is slightly smaller than the outer diameter ra of the shaft portion 15. The cylindrical portion 16 is provided with a plurality of slits 19. In the illustrated example, two slits 19 are provided. The slit 19 extends linearly along the axial center of the cylindrical portion 16 from the edge of the cylindrical portion 16 on the side away from the knob 14 described later. The cylindrical portion 16 is provided with the slit 19 described above, so that the inner and outer diameters Ra and Rb can be expanded and contracted (expanded or contracted). The cylindrical portion 16 is attached to the shaft portion 15 by fitting to the outer periphery of the shaft portion 15.

As shown in FIG. 5, the clamping spring 17 has a notch 20 formed in a part of a substantially annular member, and the planar shape is formed in a substantially C-shape. The notch 20 is provided over the entire length along the axis of the clamping spring 17. The inner diameter rb of the clamping spring 17 is slightly smaller than the outer diameter Rb of the cylindrical portion 16 described above. The tightening spring 17 is fitted to the outer periphery of the cylindrical portion 16 and attached to the cylindrical portion 16. When the clamping spring 17 is fitted to the outer periphery of the cylindrical portion 16, the cylindrical portion 16 is urged in a direction to reduce the diameter (inner and outer diameters Ra and Rb are reduced), and the cylindrical portion 16 is fixed to the shaft portion 15. To do. When the tightening spring 17 is fitted to the outer periphery of the cylindrical portion 16 and the cylindrical portion 16 is fitted to the outer periphery of the shaft portion 15, the shaft portion 15, the cylindrical portion 16, and the tightening spring 17 are coaxial with each other. .

The protrusion 18 protrudes from the outer peripheral surface of the cylindrical portion 16 and is formed integrally with the cylindrical portion 16. The protrusion 18 extends linearly along the axis of the cylindrical portion 16. The protrusion 18 is positioned in the notch 20 described above when the clamping spring 17 is fitted to the outer periphery of the cylindrical portion 16. The circumferential width H of the cylindrical portion 16 of the protrusion 18 is larger than the circumferential width h of the notch 20 of the neutral fastening spring 17 that is not elastically deformed.

[0029] The knob 14 is formed in a thick disc shape and is continuous with the end of the cylindrical portion 16. That is, the knob 14 is formed integrally with the cylindrical portion 16. When the cylindrical portion 16 is fitted to the outer periphery of the shaft portion 15, the knob 14 is exposed to the user side, that is, the front side from the front surface 2a of the device body 2.

[0030] When assembling the mounting structure 13 described above, that is, when mounting the cylindrical portion 16 and the knob 14 (composite switch 12) to the device main body 2, it is performed as follows. First, as shown in FIG. 6, a clamping spring 17 is fitted to the outer periphery of the cylindrical portion 16. At this time, the protrusion 18 is positioned in the notch 20 of the tightening spring 17. Then, since the inner diameter rb of the tightening spring 17 is smaller than the outer diameter Rb of the cylindrical portion 16, the inner and outer diameters Ra and Rb of the cylindrical portion 16 are reduced by the biasing force of the tightening spring 17.

[0031] Since the width H of the protrusion 18 is larger than the width h of the notch 20, when the inner and outer diameters Ra and Rb of the cylindrical portion 16 are reduced, the edge facing the notch 20 of the clamping spring 17 contacts the protrusion 18. Touch. Then, the tightening spring 17 cannot be biased in the direction of reducing the diameter of the cylindrical portion 16 (the biasing in the direction of reducing the diameter is restricted). Thus, the protrusion 18 restricts the biasing spring 17 from excessively biasing the cylindrical portion 16 in the direction of reducing the diameter of the cylindrical portion 16, thereby reducing the biasing force of the tightening spring 17 in the direction of reducing the diameter of the cylindrical portion 16. To do.

Then, the cylindrical portion 16 having the fastening spring 17 fitted to the outer periphery is fitted to the outer periphery of the shaft portion 15. Then, since the inner diameter Ra of the cylindrical portion 16 is smaller than the outer diameter Ra of the shaft portion 15, the inner and outer diameters Ra and Rb of the cylindrical portion 16 are expanded. Then, the edge facing the notch 20 of the projection 18 and the clamping spring 17 (The tightening spring 17 expands in diameter), and the tightening spring 17 biases the cylindrical portion 16 in the direction of reducing the diameter. The clamping spring 17 fixes the cylindrical portion 16 to the shaft portion 15. In this way, the mounting structure 13 described above is assembled (that is, the cylindrical portion 16 and the knob 14 are attached to the device main body 2 and the composite switch 12 is assembled).

[0033] In the composite switch 12 assembled in this manner, when the knob 14 is pressed, the shaft portion 15 moves along the shaft core P in the direction of sunk in the device body 2, and the push switch is pressed. To do. Then, the composite switch 12 turns on / off the power supply of the entire AV device 1, for example. In the composite switch 12, the knob 14 is rotated around the axis P, so that the shaft part 15 is rotated around the axis P together with the cylindrical part 16, and the encoder measures the amount of rotation of the axis part. Then, the composite switch 12 increases or decreases the sound being reproduced or received, for example.

[0034] According to the present embodiment, the projection 18 relieves the force of tightening the cylindrical portion 16 of the tightening spring 17. Therefore, even if the tightening spring 17 tightens the cylindrical portion 16 over a long period of time, the cylindrical portion 16 contracts. It is possible to prevent deformation such that the diameter (the inner and outer diameters are reduced). For this reason, the cylindrical part 16 can be easily fitted to (attached to) the outer periphery of the shaft part 16.

The clamping spring 17 is formed in a C shape, and the projection 18 is positioned in the notch 20 of the clamping spring 17. For this reason, in a state where the cylindrical portion 16 is not fitted to the outer periphery of the shaft portion 15, when the tightening spring 17 tightens the cylindrical portion 16, the tightening spring 17 contacts the protrusion 18.

Therefore, it is possible to prevent the tightening spring 17 from excessively tightening the cylindrical portion 16 in a state where the cylindrical portion 16 is not fitted to the outer periphery of the shaft portion 15. Therefore, it is possible to prevent the cylindrical portion 16 in the state of being fitted to the outer periphery of the shaft portion 15 from being deformed so as to be reduced in diameter (inner and outer diameters are reduced).

[0037] The inner diameter rb of the clamping spring 17 is smaller than the outer diameter Rb of the cylindrical portion 16. For this reason, when the cylindrical portion 16 is fitted to the outer periphery of the shaft portion 15, the clamping spring 17 securely tightens the cylindrical portion 16. Therefore, the cylindrical portion 16 can be securely fixed to the shaft portion 15.

In the present invention, as shown in FIG. 8, an interference projection 21 that interferes with the projection 18 may be provided on the shaft portion 15. The interference protrusion 21 interferes with the protrusion 18 so as to define a rotatable range of the shaft portion 15. The interference protrusion 21 restricts excessive rotation of the shaft portion 15. Figure 8 The same reference numerals are given to the same parts as those of the above-described embodiment, and the description thereof is omitted.

[0039] Further, in the present invention, the shaft portion 15 is not limited to a columnar shape, for example, as shown in FIGS. 9 and 10, a planar shape formed in a D shape, a prismatic shape, or the like. It may be a thing. In short, in the present invention, the shaft portion 15 may be columnar. In FIG. 9 and FIG. 10, the same parts as those of the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.

Further, in the present invention, as shown in FIGS. 11 (a) to 11 (c), the inner edge of the notch 20 of the clamping spring 17 may be formed in various shapes. In FIG. 11 (a), the inner edge of the notch 20 is inclined with respect to the shaft core so that the notch 20 gradually expands (becomes smaller) along the shaft core. Further, in FIGS. 11 (b) and 11 (c), a convex protrusion is provided in the center of the inner edge of the notch 20 in the direction of decreasing the width of the notch 20. In FIG. 11 (b), the protrusion and the inner edge of the notch 20 are connected by a linear tapered surface, and in FIG. 11 (c), the protrusion and the inner edge of the notch 20 are connected by an arcuate curved surface. In FIG. 11 (a) to FIG. 11 (c), the same parts as those of the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.

In short, in the present invention, the circumferential width H of the cylindrical portion 16 of the protrusion 18 may be made larger than the width h of at least a portion of the notch 20 in the circumferential direction of the tightening spring 17. In the present specification, the width h of the notch 20 is the width of the narrowest portion of the width of the notch 20.

[0042] In the above-described embodiment, the AV device 1 attached to a vehicle as an electronic device is shown. However, the present invention may be applied not only to the AV device 1 but also to various electronic devices.

In the above-described embodiment, the protrusion 18 is integrated with the cylindrical portion 16. However, in the present invention, the protrusion 18 as the relaxing means and the cylindrical portion 16 may be separated from each other. Further, in the present invention, the relaxing means may be in various configurations other than the protrusion 18, and the tightening means may be in various configurations other than the clamping spring 17.

Furthermore, in the above-described embodiment, the mounting structure 13 constitutes the composite switch 12. However, in the present invention, the mounting structure 13 may constitute various parts.

[0045] According to the above-described embodiment, the following cylindrical mounting structure 13 and AV device 1 can be obtained.

[0046] (Appendix 1) Columnar shaft portion 15; A cylindrical portion 16 formed in a cylindrical shape and provided with a slit 19 and fitted to the outer periphery of the shaft portion 15;

In the cylindrical mounting structure 13, which includes a clamping spring 17 that biases the cylindrical portion 16 in the direction of reducing the diameter and fixes the cylindrical portion 16 to the shaft portion 15.

A mounting structure 13 for a cylindrical body, comprising a protrusion 18 for reducing a biasing force in a direction of reducing the diameter of the cylindrical portion 16 of the clamping spring 17.

(Supplementary Note 2) The clamping spring 17 has a notch 20 formed in a part of a substantially annular member and a planar shape formed in a substantially C shape, and is formed on the outer periphery of the cylindrical portion 16. 2. The cylindrical mounting structure 13 according to appendix 1, wherein the projection 18 protrudes from an outer peripheral surface of the cylindrical portion 16 and is positioned in the notch 20 while being fitted.

(Additional remark 3) The cylindrical body mounting structure 13 according to additional remark 2, wherein an inner diameter rb of the clamping spring 17 is smaller than an outer diameter Rb of the cylindrical portion 16.

(Additional remark 4) The circumferential width H of the cylindrical portion 16 of the protrusion 13 is larger than the width h of at least a part of the tightening spring 17 in the circumferential direction of the notch 20. 2. Cylindrical mounting structure described in 13.

[0050] (Appendix 5) An AV device 1 comprising the cylindrical body mounting structure 13 according to any one of appendices 1 to 4.

[0051] According to Supplementary Note 1, since the protrusion 18 relieves the force of tightening the cylindrical portion 16 of the tightening spring 17, even if the tightening spring 17 tightens the cylindrical portion 16 over a long period of time, the cylindrical portion 16 contracts. It is possible to prevent deformation such that the diameter (the inner and outer diameters are reduced). For this reason, the cylindrical part

16 can be easily fitted to (attached to) the outer periphery of the shaft portion 16.

It should be noted that the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

Claims

The scope of the claims

[1] Columnar shaft,

A cylindrical portion that is formed in a cylindrical shape and provided with a slit, and that is fitted to the outer periphery of the shaft portion;

In the mounting structure of the cylindrical body, the biasing means for urging the cylindrical portion in the direction of reducing the diameter and fixing the cylindrical portion to the shaft portion,

A mounting structure for a cylindrical body, comprising: relaxation means for relaxing an urging force in a direction of reducing the diameter of the cylindrical portion of the fastening means.

[2] The tightening means has a notch formed in a part of a substantially annular member, a planar shape is formed in a substantially C shape, and is fitted to the outer periphery of the cylindrical portion.

2. The mounting structure for a cylindrical body according to claim 1, wherein the relaxation means is a protrusion that is convex on the outer peripheral surface of the cylindrical portion and is positioned in the notch.

3. The cylindrical body mounting structure according to claim 2, wherein an inner diameter of the tightening means is smaller than an outer diameter of the cylindrical portion.

4. The mounting structure for a cylindrical body according to claim 2, wherein the circumferential width of the cylindrical portion of the protrusion is larger than the width of at least a part of the circumferential direction of the fastening means of the notch. Made.

[5] An electronic device comprising the mounting structure for a cylindrical body according to any one of claims 1 to 4 and claim 4.