CN1149599C

CN1149599C - Cam Pawl mechanism of rotary operating electrical components

Info

Publication number: CN1149599C
Application number: CNB991237145A
Authority: CN
Inventors: 野村晓寿
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 1998-12-03
Filing date: 1999-11-16
Publication date: 2004-05-12
Anticipated expiration: 2019-11-16
Also published as: JP2000173399A; TW428186B; CN1255721A; MY130854A; KR20000047854A; KR100340480B1

Abstract

To reduce generation of noise at the time of clicking by integrally providing an engaging member made of synthetic resin with a spring plate, integrally providing both ends of the spring plate with a support member made of synthetic resin, and press contacting the support member to a retaining member against the press contact of the engaging member to an uneven surface part. A semi-cylindrical part 6a of an engaging member 6 slides on the outer circumference of a rotary plate 5 while rotating together with the plate 5 according to rotary operation. Since the member 6 is elastically energized to press contact with the outer circumferential part of the plate 5 by a spring plate 7, operation force required for rotating a rotary shaft 2 varies when the part 6a engages with each uneveness part 5a sequentially so that a clicking feeling is sensed by an operator through the shaft 2. Then the member 6 moves following the part 5a, the plate 7 repeats bending and support members 8 provided on both ends of the plate 7 slide and vibrate on a support part 3b of a retaining member 3. However, generation of noise is extremely small since the support member 8 is made of resin.

Description

Detent mechanism in the rotary operating electrical components

Technical field

The present invention relates to such as the detent mechanism in the rotary operating electrical components of rotary switch, rotation variable resistance etc.

Background technology

Below with reference to the detent mechanism in the existing this rotary operating electrical components of accompanying drawing 3,4 explanations.This rotary operating electrical components 21 includes place, one end rotation axis 22 knob-style adjuster (not shown), that drive rotary operating electrical components 21 rotation usefulness is installed, supporting bearing 23 rotation axis 22, that make by metal material with rotary way, and be arranged on these bearing 23 inner places, apply the detent mechanism 24 that the snapping sense is used with respect to the rotation of rotation axis 22.

This detent mechanism 24 have form substantially circular plate type, can with the rotor plate 25 of rotation axis 22 unitary rotation, the link 26 that combines with the peripheral part of this rotor plate 25, with and both ends are 23 that supporting by bearing, apply metal spring plate 27 towards the elastic force of link 26 directions to rotor plate 25.

At the peripheral part of rotor plate 25, by predetermined space several jogs 25a is set continuously, and on a side of rotor plate 25, also disposes several printed circuit assemblies 25b according to mode with jog 25a synchronised.

Link 26 is made of synthetic resin, and has the half-cylindrical parts 26a that the jog 25a with the peripheral part of rotor plate 25 connects.(アウトサ-ト) shaping forms as one with the central portion of latch plate 27 above-mentioned synthetic resin by the outside.

The both side ends 27a of

latch plate

27,27b and the stage portion 23b that is arranged on the recess 23a place on the bearing 23 connect, and make itself and the peripheral part of rotor plate 25 elastic reaction of crimping mutually thereby can apply to link 26.

When the operator implements rotating operations to the rotation axis 22 of the rotary operating electrical components 21 that has this structure and constitute, rotor plate 25 is unitary rotation thereupon, thereby the peripheral part of this rotor plate 25 is slided with respect to the half-cylindrical parts 26a on the link 26.

At this moment, because latch plate 27 is applied with to link 26 and makes itself and the elastic reaction of the peripheral part crimping direction mutually of rotor plate 25, so the half-cylindrical parts 26a on the link 26 will combine, break away from each jog 25a successively, thereby rotation rotation axis 22 necessary operations power are changed, so the operator will experience the rotation sense (snapping sense) of detent mechanism by the rotation of rotation axis 22.

When link 26 produces when mobile with jog 25a, latch plate 27 will produce deflection repeatedly, when thereby both side ends 27a, the 27b stage portion 23b place on bearing 23 that makes latch plate 27 produces and slides, also can owing to and stage portion 24b between vibration produce impact, and then can produce sizable noise.

When rotor plate 25 rotates, printed circuit assembly 25b also will with the sliding contact of fixed contact piece (not shown), thereby can implement switching between contact point.

Detent mechanism in the existing this rotary operating electrical components, make to be installed in and combine with jog 25a, the both side ends 27a of the latch plate 27 at link 26 places that break away from, 27b and the stage portion 23b that is arranged on the bearing 23 connect, so when link 26 produces when mobile with jog 25a, latch plate 27 will produce deflection repeatedly, and then make the both side ends 27a of latch plate 27, when the stage portion 23b place of 27b on bearing 23 produces and slides, also can owing to and stage portion 24b between vibration produce impact, thereby have the problem that can produce sizable noise.

Summary of the invention

The objective of the invention is to reduce be hit by a bullet the noise that vibration produced between spring plank and the stage portion of existing detent mechanism.

First solution that addresses the above problem provided by the present invention is the detent mechanism in a kind of rotary operating electrical components, it is a kind of rotation axis that can implement rotating operation that has, with this rotation axis unitary rotation, be provided with the rotor plate of several jogs at its peripheral part place, can combine with described jog, the link that breaks away from, this link edge and described jog crimping direction are mutually applied the metal spring plate of elastic reaction, and the holding member that keeps this latch plate to use, when described link rotates with described rotation axis and combines with described jog, during disengaging, meeting generation detent mechanism rotates the detent mechanism in the rotary operating electrical components of feeling, and described link is made by the synthetic resin material, this link and described latch plate are set to one, and has the holding components that constitutes by the synthetic resin material, the both side ends of this holding components and described latch plate is set to one, resist of the crimping of described link towards described jog, thereby make described holding components be crimped on described holding member place, and can slide at described holding member place.

Second solution that addresses the above problem provided by the present invention is on the basis of aforementioned solution, also makes described holding components with respect to the form crimping of described holding member with line contact or some contact.

The 3rd solution that addresses the above problem provided by the present invention is on the basis of aforementioned solution, and also described holding components is provided with and is sphere, arc-shaped surface or projected square part, to form line contact or some contact with respect to described holding member.

Description of drawings

Internal view when Fig. 1 is the detent mechanism of representing from inboard observation rotary operating electrical components constructed according to the invention.

The stereogram that latch plate, link and the holding components that uses in the detent mechanism of Fig. 2 for expression rotary operating electrical components constructed according to the invention used.

Internal view when Fig. 3 observes detent mechanism the existing rotary operating electrical components for expression from the inboard.

The latch plate that uses in the detent mechanism of Fig. 4 for the existing rotary operating electrical components of expression, the stereogram that link is used.

Embodiment

Below with reference to the detent mechanism in accompanying drawing 1, the 2 explanation rotary operating electrical components constructed according to the invention.

Detent mechanism in the rotary operating electrical components constructed according to the invention just as shown in Figure 1, 2, this rotary operating electrical components 1 includes place, one end rotation axis 2 knob-style adjuster (not shown), that drive rotary operating electrical components 1 rotation usefulness is installed, with rotary way supporting rotation axis 2, by the holding member 3 that constitutes such as the bearing of molded metal material etc., and be arranged on these holding member 3 inner places, apply the detent mechanism 4 that the snapping sense is used with respect to the rotation of rotation axis 2.

This detent mechanism 4 have form substantially circular plate type, can with rotation axis 2 unitary rotation, by the rotor plate 5 that constitutes such as synthetic resin such as acetal resins, the link 6 that combines with the peripheral part of this rotor plate 5, be installed in the metal spring plate 7 on this link 6, and the holding components 8 that these latch plate 7 both side ends places are installed.

The holding components 8 that is configured in the both side ends place of latch plate 7 is being supported by holding member 3, and latch plate 7 can apply elastic force towards link 6 directions to rotor plate 5.

Peripheral part place at rotor plate 5 is provided with several jogs 5a continuously by predetermined space, and also disposes several printed circuit assemblies 5b according to the mode with jog 5a synchronised at the place, a side of rotor plate 5.

Link 6 constitutes with the thermoplasticity elastomeric material that the central portion of latch plate 7 forms as one by being shaped by the outside, and has and be configured in the half-cylindrical parts 6a that the jog 5a at the peripheral part place of rotor plate 5 connects.

And holding components 8 constitutes with the thermoplasticity elastomeric material that the both side ends of latch plate 7 forms as one by being shaped by the outside, and has arc-shaped surface 8a.

Arc-shaped surface 8a on this holding components 8 is assembled in recess 3a place on the holding member 3 with the embedded mode that can move about, thereby can contact with support sector's 3b retention wire, and can slide on the 3b of support sector.

When the operator implemented rotating operations to the rotation axis 2 of the rotary operating electrical components 1 that has this structure and constitute, rotor plate 5 is unitary rotation thereupon, thereby the peripheral part of this rotor plate 5 is slided with respect to the half-cylindrical parts 6a on the link 6.

At this moment, because latch plate 7 is applied with to link 6 and makes itself and the elastic reaction of the peripheral part crimping direction mutually of rotor plate 5, so the half-cylindrical parts 6a on the link 6 will combine, break away from jog 5a successively, thereby rotation rotation axis 2 necessary operations power are changed, so the operator will experience the rotation sense (snapping sense) of detent mechanism by the rotation of rotation axis 2.

Groove 3c on the holding member 3 produces guide effect with double cylindrical parts 6a, thus the positional precision can keep ratchet to rotate the time.

And, when link 6 produces when mobile with jog 5a, latch plate 7 will produce deflection repeatedly, thereby the holding components 8 that makes the both side ends place that is arranged on latch plate 7 produces slip, vibration on the 3b of support sector at holding member 3 places, but because holding components 8 is by constituting such as materials such as synthetic resin, so can be reduced to noise very little.

When rotor plate 5 rotates, printed circuit assembly 5b also will with the sliding contact of fixed contact piece (not shown), thereby can implement switching between contact point.

And in the above-described embodiments, holding components 8 is to be that example describes to be provided with arc-shaped surface 8a with the occasion of implementing the line contact, it can certainly be arranged to be square implementing the line contact, or be arranged to be sphere shape to implement the some contact.

Can also adopt the holding components 8 of other form, and can suitably change the shape of the 3b of support sector on the holding member 3 by implement the mode of line contact or some contact with respect to holding components 8.

Detent mechanism in the rotary operating electrical components of the present invention will be arranged on latch plate 7 places, be crimped on holding member 3 places by the holding components 8 that constitutes such as materials such as synthetic resin, so the invention provides a kind of slip of holding components on holding member 3, noise that vibration is produced detent mechanism for using in minimum, the rotary operating electrical components that can make when detent mechanism rotates.

And, holding components 8 is line contact or some contact with respect to holding member 3, so can further reduce noise, but also can change the formation shape of holding components 8, so the present invention also provides a kind of structure to constitute detent mechanism in the rotary operating electrical components simple, that productibility is good.

And, can also be provided with on by the holding components 8 that constitutes such as materials such as synthetic resin and be sphere, arc-shaped surface or square part, so the present invention also provides a kind of detent mechanism of making in the rotary operating electrical components simple, that productibility is good.

Claims

1. the detent mechanism in the rotary operating electrical components, it has the rotation axis that can implement rotating operation, with this rotation axis unitary rotation, be provided with the rotor plate of several jogs at its peripheral part place, can combine with described jog, the link that breaks away from, this link edge and described jog crimping direction are mutually applied the metal spring plate of elastic reaction, and the holding member that keeps this latch plate to use, when described link rotates with described rotation axis and combines with described jog, during disengaging, can produce detent mechanism and rotate sense, it is characterized in that described link made by the synthetic resin material, this link and described latch plate are set to one, and has the holding components that constitutes by the synthetic resin material, the both side ends of this holding components and described latch plate is set to one, resist of the crimping of described link towards described jog, thereby make described holding components be crimped on described holding member place, and can slide at described holding member place.

2. the detent mechanism in the rotary operating electrical components as claimed in claim 1 is characterized in that described holding components is line contact or some contact form with respect to the crimping of described holding member.

3. the detent mechanism in the rotary operating electrical components as claimed in claim 2 is characterized in that described holding components is provided with and is sphere, arc-shaped surface or square part, to form line contact or some contact with respect to described holding member.