JPH07220582A - Noise-proofing structure for switch - Google Patents

Abstract

PURPOSE:To reduce noise in switching operation. CONSTITUTION:Ratchet arms 5a, 5b and ratchets 6a, 6b are interlocked with each other by steering returning operation for running a car straight ahead to restore an oscillation lever 4 to a neutral position automatically. Action regulation shafts 9a, 9b are protruded from a support base 2 for regulating action ranges of the ratchet arms 5a, 5b to be applied through shock absorbing members 17a, 17b. A guard pin 20 comprising a resilient member is provided to stand between the ratchet 6a, 6b and a hollow pole-shaped center part 11. As a result, noise in switching operation can be reduced, thereby a high-grade switch without generating a feel of disorder or uncomfortableness in usage can be provided to apply to a wide application range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof structure for a switch, which has a structure for reducing noise generated from a member that operates when the switch is operated.

[0002]

2. Description of the Related Art It is well known that conventionally, what is called a switch has various kinds and has various constituent functions. Among them, the contact type switch interrupts the amount of information and signal transmission in the circuit, and at least the operation member and the operator that performs the stroke operation by the operation member, the fixed terminal, the contact It has a child. By performing the stroke motion of this contactor,
It is configured to connect and disconnect between terminals for signal transmission. By the way, in such a switch, at the time of a stroke operation, when the stroke operation ends, an operation sound, a contact element, or the like of the switch is brought into contact with an operation control member provided on a case member of the switch, thereby providing an appropriate operation sound. In many cases, (or a click feeling) is generated to inform the operator that the switch is being operated reliably.

However, there are cases where the above-described operation sound (or click feeling) is completely unnecessary. That is, this is a case in which the switch operation is performed dynamically instead of being manually performed by the operator. For example, an operation switch for a direction indicator, which is provided near the steering wheel of an automobile, that is, an operation lever, is operated so as to blink a lamp in the turning direction by operating the steering wheel in the same direction as turning the steering wheel. After the vehicle is turned on and the vehicle turns, the steering lever is returned to the original position so that the vehicle can go straight. At this time, when the operation switch for the direction indicator is operated, the operation switch generates an operation sound (or a click feeling), but the driver can recognize that the switch operation is completed.

[0004]

However, even when the operating lever returns in conjunction with the steering by returning it to the original state, the operating lever may emit an operating sound and feel uncomfortable or uncomfortable. It is desirable that there is no operation sound at this time. The present invention has been made to solve such problems, and an object thereof is to reduce noise generated from a member that operates when a switch is operated.

[0005]

In order to solve the above-mentioned problems, the present invention is based on at least a means for manually operating a switch and a return mechanism for automatically returning the means for performing a switch operation. While being provided on the member, the base member is provided with an operation restricting means for restricting the operation of the return mechanism when the switch operating means performs the returning operation, and the operation restricting means is constituted by an elastic member. . Further, the present invention provides an operating member that is displaced from a neutral position by an operating member and is held at a corresponding operating position after an operation, and another mechanism that operates in conjunction with the operating member and that operates with the operation of the operating member. The interlocking means for interlocking with the above is provided on the base, and the operator is interlocked and returned through the interlocking means by the return operation of the other mechanism, and the interlocking means is configured at the limit position of the operation when the interlocking means operates. A movement restricting member that abuts the member
It is characterized in that the operation regulating member is composed of an elastic member.

[0006]

[Operation] By operating the operation member along with the operation of other mechanisms,
When the operator is brought from the neutral position to the specific position by a predetermined stroke, the interlocking means is interlocked and displaced. At this time, the members forming the interlocking means are
It comes into contact with the elastic motion restricting member provided at the motion limit position. Then, when the operator returns to the neutral position through the interlocking means by the return operation of the other mechanism, the member forming the interlocking means impacts the elastic operation restricting member, but the elastic operation restricting member causes the impact. It is alleviated and unnecessary operation noise can be suppressed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a switch to which the soundproof structure according to the present invention is applied will be described below with reference to the accompanying drawings. FIG. 1 shows a direction indicator switch 1 provided near a steering wheel (not shown) of an automobile,
The direction indicator switch 1 includes a support base 2 and an operation member 3
The oscillating lever 4 is mounted so that it can be swung within a predetermined range, and can be swung equidistantly from the turning axis of the swinging lever 4 to the swinging lever 4 which is held at a plurality of operating positions in addition to the neutral position. Pair of ratchet arms 5a, 5b
And ratchet arms 6a and 6b in the form of pointers rotatably attached to the end portions of the ratchet arms 5a and 5b facing each other. That is, the direction indicator switch 1 moves the swing lever 4 from the neutral position to the operation position indicating the traveling direction by the operation member 3 with the operation of the steering wheel and closes the circuit leading to the direction indicator lamp (not shown). At the same time, the direction indicator lamp blinks to indicate the traveling direction of the automobile, and the ratchet arms 5a and 5b and the ratchet 6 are operated by returning the steering wheel so as to move the automobile straight.
It has a function of automatically returning the swing lever 4 to the neutral position by interlocking a and 6b.

As shown in FIG. 2, an engaging hole 7 for rotatably holding the rocking lever 4 and ratchet arms 5a, 5b and other necessary parts are provided on the support base 2 at predetermined positions. Mounting shafts 8a and 8b for fitting and motion restriction shafts 9a and 9b for restricting the motion range of the ratchet arms 5a and 5b are provided in a protruding manner.

The operation member 3 is a rod-shaped operation lever, and is attached to the swing lever 4. A switch 10 for a light is provided at the tip of the operation member 3.

The swing lever 4 swingable by the operating member 3 is a synthetic resin integrally molded product, and as shown in the drawing, the central portion 11 is formed in a hollow column shape and the support base is formed. 2 has an engaging hole 7 and a protrusion 12 for fitting in a positioning hole provided in a lid member (not shown) and rotatably supporting it. Further, the swing lever 4 is provided with a swing portion 13 formed integrally with the hollow columnar central portion 11 and extending in the horizontal direction. The swinging portion 13 is formed by projecting a peripheral edge portion so that interlocking pins of ratchet arms 5a and 5b, which will be described later, come into contact with the swinging portion 13. Then, for example, a spring (not shown) is provided on one end side of the swing portion 13.
A ball (not shown) held by is mounted, and the rocking lever 4 is held at a fixed value by pressing the ball against the step portion 14 formed inside the support base 2 by the spring.

Next, the ratchet arms 5a, 5b are synthetic resin moldings having a substantially triangular shape, and a support base provided so as to sandwich the hollow columnar central portion 11 of the rocking lever 4 near one vertex. It has through holes 15a and 15b for rotatably fitting to the two mounting shafts 8a and 8b, and in the vicinity of another vertex,
The ratchet arms 5a, 5b are connected to each other by a coil spring 16 so as to be associated with each other. Also, the ratchet arm 5
The ratchet arms 5a and 5b are attached to the mounting shaft 8a and 5b.
The cushioning member 17 that comes into contact with the operation regulating shafts 9a and 9b from the vicinity of the through holes 15a and 15b when fitted to the a and 8b.
Projections a and 17b are provided. Further, the ratchet arms 5a and 5b are provided with interlocking pins 18a and 18b which come into contact with the peripheral edge portion of the swinging portion 13 of the swinging lever 4 near the vertexes other than the above.

Although not shown, the ratchets 6a and 6b are brought into contact with the steering components by the returning operation of the steering wheel so that the ratchet arms 5a and 5b.
For swinging back to the rocking lever 4 by interlocking with each other. The ratchet arms 5a, 5b are rotatably attached near the ends facing each other, and the shorter end is pulled in via the coil springs 19a, 19b. It is attached to the ratchet arms 5a and 5b by being biased to. When the ratchets 6a and 6b are mounted on the support base 2,
The long end of the swing lever 4 is brought close to the hollow columnar center portion 11, and the side faces near the tips of the ratchets 6a and 6b do not directly contact the hollow columnar center portion 11 of the swing lever 4. Thus, the guard pin 20 is erected. The guard pin 20 can be made of an elastic member.

The direction indicator switch 1 having the contact structure according to the present invention is as described above, and its operation function will be described below. Along with the steering operation, the operation member 3
When the swing lever 4 is moved from the neutral position to the operation position indicating the traveling direction by the ball, the ball on the one end side of the swing portion 13 of the swing lever 4 is stepped inside the support base 2 by the elastic force of the spring. And is brought to and held at a position corresponding to the operating position. At this time, by getting over the stepped portion 14 inside the support base 2, an appropriate click feeling is given, and the driver can recognize that the operation is completed. Then, the circuit leading to the direction indicator lamp (not shown) can be closed, and the direction indicator lamp can be blinked to indicate the traveling direction of the automobile.

When the rocking lever 4 is brought to a position corresponding to the operating position, the peripheral edges of the rocking portion 13 cause the interlocking pins 18a, 18b of the ratchet arms 5a, 5b.
Is pushed, one side of the ratchet arms 5a, 5b is displaced, and the cushioning members 17a, 17b are moved by the operation restricting shafts 9a, 9b.
The side surfaces near the tips of the ratchets 6a, 6b, which are in contact with the movement restricting shafts 9a, 9b while the cushioning members 17a, 17b are in contact with the guard pins 20 of the hollow columnar central portion 11 of the rocking lever 4 (see FIG. 3, (See FIG. 4). Then, the buffer members 17a, 1 of the other ratchet arm 5a, 5b
7b is separated from the operation restricting shafts 9a and 9b, and the other side of the ratchets 6a and 6b is separated from the guard pin 20. In this state, when the steering wheel is returned so as to make the vehicle go straight, the steering member pushes the ratchets 6a, 6b on the side of the hollow columnar central portion 11 away from the guard pin 20 in the direction close to the guard pin 20, As a result, the ratchet arms 5a, 5b return to rotate with the coil springs 19a, 19b as assisting force, and the interlocking pins 18a, 18b swing to the swinging part 13 of the lever 4.
Since the peripheral portion of the swinging member is pushed in, the swinging portion 13 deviates over the step portion 14 inside the support base 2 and is brought to a position corresponding to the neutral position, and the return of the swinging lever 4 is completed (Fig. 1).

At this time, the shock absorbing members 17a and 17b of the ratchet arms 5a and 5b impact the operation regulating shafts 9a and 9b, and the side surfaces near the tips of the ratchets 6a and 6b impact the guard pin 20. However, the cushioning members 17a, 17
Since the b and the guard pin 20 are formed of the elastic member, the impact noise is reduced and the unnecessary operation noise can be reduced.

[0016]

As described above, according to the present invention, it is possible to reduce the noise generated from the member that operates when the switch is operated, and it is possible to obtain a high quality product that does not cause discomfort or discomfort during use. It can bring a switch and has a wide range of applications.

[0017]

[Brief description of drawings]

FIG. 1 is an explanatory plan view of main parts showing an example of a switch having a soundproof structure according to the present invention.

FIG. 2 is an exploded perspective view showing the switch shown in FIG.

FIG. 3 is a functional explanatory diagram of a switch having a soundproof structure according to the present invention.

FIG. 4 is a functional explanatory diagram of a switch having a soundproof structure according to the present invention.

[Explanation of symbols]

 1 Switch for Direction Indicator 2 Support Base 3 Operating Member 4 Swing Lever 5a, 5b Ratchet Arm 6a, 6b Ratchet 7 Engagement Holes 8a, 8b Mounting Shaft 9a, 9b Operation Restriction Shaft 10 Light Switch 11 Center 12 Protrusion 13 Oscillating part 14 Steps 15a, 15b Through hole 16 Coil spring 17a, 17b Cushioning member 18a, 18b Interlocking pin 19a, 19b Coil spring 20 Guard pin

Claims (2)

[Claims] 1. A base member is provided with at least a means for manually operating a switch and a return mechanism for automatically returning the means for performing a switch operation, and the base member is provided with a means for performing the switch operation. A soundproof structure for a switch, characterized in that an operation restricting means for restricting an operation of the returning mechanism at the time of returning operation is provided, and the operation restricting means is constituted by an elastic member. 2. An operating member which is displaced from a neutral position by an operating member and is held at a corresponding operating position after the operation, and another mechanism which operates in conjunction with the operating member while operating with the operating member. The interlocking means for interlocking is provided on the base, and the operator is interlocked and returned through the interlocking means by the return operation of the other mechanism, and the interlocking means is configured at the limit position of the operation when the interlocking means operates. A soundproof structure for a switch, characterized in that a motion regulating member for abutting a member is provided, and the motion regulating member is constituted by an elastic member.