JP4173336B2 - Operation mechanism of in-vehicle composite operation type electric parts - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation mechanism of an on-vehicle electric component used for volume adjustment of an audio system, air volume adjustment of an air conditioner system, and the like, and in particular, a center push function inside a rotary operation type electric component such as a rotary encoder or a rotary switch. It is related with the operation mechanism of the vehicle-mounted composite operation type electric component provided with.
[0002]
[Prior art]
Various electric parts such as rotary switches and push button switches used in audio systems and air conditioner systems are mounted on automobiles, and these electric parts are operated by operation knobs manually operated by passengers. . In such an on-vehicle electrical component, for example, a push button switch for power on / off operation is arranged inside a rotary switch for volume control in order to perform volume control and power on / off operation of an audio system. A composite operation type electric component is known in which a rotary knob for operating a rotary switch and a push knob for operating a push button switch are coaxially arranged.
[0003]
Such an in-vehicle composite operation type electric component is mounted on a printed circuit board disposed inside a predetermined mounting surface such as an instrument panel, and a passenger manually operates a rotary knob and a push knob protruding from the mounting surface. Thus, the rotary switch and the push button switch are operated. In this case, the amount of protrusion from the mounting surface of the rotary knob and push knob is set to be relatively small in consideration of safety in the event of a car crash or sudden braking. Care is taken not to protrude more than 9.5 mm from the mounting surface.
[0004]
[Problems to be solved by the invention]
By the way, if the amount of protrusion with respect to the mounting surface of the rotary knob and the push knob provided in the in-vehicle composite operation type electrical component is set to be relatively small as in the prior art described above, it is necessary for a passenger who manually operates these knobs. The operability is deteriorated, and in particular, it is difficult to rotate the rotary knob. Therefore, in order to improve operability and design diversification, it is conceivable to increase the amount of protrusion on the mounting surface of the rotary knob and push knob, but simply increase the amount of protrusion of the rotary knob and push knob. If this is done, the safety at the time of a collision, sudden braking, etc. will be lowered, so some kind of contrivance is required.
[0005]
The present invention has been made in view of the actual situation of the prior art, and the object thereof is an in-vehicle composite operation type capable of increasing the protrusion amount of the rotary knob and the push knob while ensuring safety. The object is to provide an operating mechanism for electrical components.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the on-vehicle composite operation type electric component operating mechanism according to the present invention, a rotary operation type electric component having a cylindrical rotor member, and a hollow rotary knob for rotating the rotor member And a push button switch arranged inside the rotary operation type electrical component, and a push knob arranged inside the hollow portion of the rotary knob to push in the push button switch, and each of the rotary knob and the push knob. When a pressing force of a predetermined value or more is applied to the rotary knob and the push knob, the fragile portions are broken, and the rotary knob moves in the axial direction with respect to the rotor member. the push knob is configured to move following to the rotary knob in the axial direction of said rotor member, an outer peripheral surface of said rotor member A guide groove extending in the line direction, abut with locking snap pawl provided on the rotary knob at the upper end of the guide groove, a small projection provided on the rotary knob as said weak portion on the upper end of the rotor member did.
[0007]
With this configuration, during normal use of the in-vehicle composite operation type electrical component, the rotary knob that operates the rotary operation type electrical component and the push knob that operates the push button switch are protruded greatly from the mounting surface. Therefore, the operability of these knobs (especially the rotary knob) can be improved. When a pressing force of a predetermined value or more is applied to the rotary knob and the push knob from the outside, the fragile portion is broken and the rotary knob and the push knob are broken. Since the amount of protrusion with respect to the mounting surface decreases, safety can be ensured in the event of a car crash or sudden braking.
[0009]
In the above configuration, the push knob is provided with a step where the large-diameter portion and the small-diameter portion are connected by an annular portion, and a plurality of slits extending along the circumferential direction are formed in the annular portion. It is preferable that the portion to be positioned is the fragile portion. At this time, it is preferable that a step is provided in the hollow portion of the rotary knob, and the upper end of the step and the lower end of the large-diameter portion are opposed to each other with a predetermined interval.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of an on-vehicle composite operation type electric component according to an embodiment of the present invention, and FIG. 2 is a rotary switch provided in the composite operation type electric component. 3 is a top view of the rotary switch, FIG. 4 is a front view of a rotary knob provided in the composite operation type electrical component, FIG. 5 is a bottom view of the rotary knob, and FIG. FIG. 7 is a front view of a push knob provided in the composite operation type electrical component, FIG. 8 is a top view of the push knob, FIG. 9 is a bottom view of the push knob, and FIG. 10 is a rotary knob. FIG. 11 is an explanatory view showing a connection state between the push knob and the rotary switch, and FIG. 12 is a cross-sectional view showing a state where the weakened portion of the composite operation type electrical component is broken.
[0011]
As shown in FIG. 1, an in-vehicle composite operation type electrical component according to this embodiment includes a rotary switch 1 as a rotary operation type electrical component, a rotary knob 2 that operates the rotary switch 1, and an inner side of the rotary switch 1. And a push knob 4 for operating the push button switch 3. The rotary switch 1 and the push button switch 3 are mounted on a printed circuit board 6 disposed in a housing 5. Yes. The housing 5 is attached to a predetermined location in the vehicle, for example, a recess of the instrument panel, and a cover 5a covering the upper surface of the housing 5 serves as a panel surface (mounting surface) of the composite operation type electrical component. Yes.
[0012]
As shown in FIGS. 2 and 3, the rotary switch 1 includes a stator member 7 and a rotor member 8. When the rotor member 8 is rotated with respect to the stator member 7, a slider (not shown) on the rotor member 8 side is not shown. A pulse signal is output in contact with and away from a contact pattern (not shown) on the stator member 7 side. The stator member 7 has a cylindrical support wall 7a, and a plurality of protrusions 7b (see FIG. 11) are formed on the inner peripheral surface of the support wall 7a. The rotor member 8 is formed in a cylindrical shape and is rotatably supported on the outer peripheral surface of the support wall 7 a of the stator member 7. The rotor member 8 is formed with a plurality of engagement grooves 8 a extending downward from the upper end and a plurality of guide grooves 8 b extending upward from the lower end. The engagement grooves 8 a and the guide grooves 8 b are formed on the circumference of the rotor member 8. Alternatingly arranged along the direction.
[0013]
The rotary knob 2 is formed of synthetic resin. As shown in FIGS. 4 to 6, the rotary knob 2 is formed in a hollow shape having a cylindrical opening 9. The rotary knob 2 has a stepped portion 2a inside, and an annular portion 2b that protrudes downward from the stepped portion 2a is provided. A plurality of small protrusions 2c functioning as fragile portions are formed on the inner peripheral surface of the annular portion 2b, and a plurality of engagement protrusions 2d and snap claws 2e are formed. These engagement protrusions 2d And the snap claws 2e are alternately arranged along the circumferential direction of the rotary knob 2. As shown in FIG. 10, the annular portion 2b of the rotary knob 2 is inserted from above the rotor member 8, each small projection 2c abuts on the upper end of the rotor member 8, and each snap claw 2e is the upper end of the guide groove 8b. The rotary knob 2 is prevented from coming off from the rotor member 8. Although not shown in the drawings, the rotary knob 2 and the rotor member 8 are connected so as to rotate integrally by engaging each engaging protrusion 2d with the upper portion of the engaging groove 8a.
[0014]
The push knob 4 is made of a synthetic resin formed in a hollow shape as a whole, and this push knob 4 is disposed in the opening 9 of the rotary knob 2. As shown in FIGS. 7 to 9, the push knob 4 has a step formed by connecting the large diameter portion 4a and the small diameter portion 4b with a ring-shaped annular portion 4c, and a lid 10 is formed at the upper end of the large diameter portion 4a. Are snap-coupled (see FIG. 1). The annular portion 4c is formed with a plurality of slits 4d extending along the circumferential direction, and a portion located between the slits 4d is a thin portion 4e that functions as a fragile portion. A plurality of snap claws 4f are formed on the small diameter portion 4b, and a drive portion 4g protruding inward is formed below the small diameter portion 4b. As shown in FIG. 11, the small-diameter portion 4b is inserted into the inner peripheral surface of the support wall 7a of the stator member 7 so as to be movable up and down, and each snap claw 4f is engaged with the projection 7b, whereby the push knob 4 is rotated by the rotary switch. The stator member 7 is prevented from coming off.
[0015]
FIG. 1 shows a normal use state of the composite operation type electrical component according to the present embodiment example. In this normal use state, the rotary knob 2 has a predetermined dimension from the upper surface of the cover 5a which is a panel surface (mounting surface). It protrudes by L (L = 12 mm in this embodiment). In this case, each snap claw 2e of the rotary knob 2 is locked to the upper end of the guide groove 8b. However, the lower end of each snap claw 2e is separated from the upper surface of the stator member 7 by a predetermined dimension L1. In the example, L1 = 3 mm is set. The lid 10 attached to the push knob 4 is substantially flush with the upper end of the rotary knob 2, and the lower end of the large diameter portion 4a is separated from the upper surface of the stepped portion 2a of the rotary knob 2 by a predetermined dimension. . Further, the drive portion 4 g of the push knob 4 is in contact with the stem 3 a of the push button switch 3, and the push knob 4 is urged upward by a return spring (not shown) built in the push button switch 3.
[0016]
In the composite operation type electrical component configured as described above, when the rider picks and rotates the rotary knob 2 protruding from the cover 5a, the rotor member 8 rotates in conjunction with the rotary knob 2, whereby the rotary switch 1 is rotated. Since a pulse signal corresponding to the rotation direction and amount of rotation of the rotary knob 2 is output from, the volume of the audio system can be adjusted based on this output signal, for example. When the passenger presses the cover 10 exposed in the opening 9 of the rotary knob 2 with his / her finger, the push knob 4 is lowered while being guided by the support wall 7a of the stator member 7, and the drive unit 4g is moved accordingly. Since the stem 3a is pushed in and a switching signal is output from the push button switch 3, for example, the power of the audio system can be turned on or off based on the output signal. In such a normal use state, the rotary knob 2 and the push knob 4 project greatly (L = 12 mm) from the upper surface of the cover 5a, which is the panel surface, so that the passenger can manually operate the knobs 2 and 4 easily. In particular, it is possible to improve the operability of the rotary knob 2 that is picked up with fingers and rotated.
[0017]
Here, when a pressing force of a predetermined value or more is applied to the rotary knob 2 and the push knob 4 due to an automobile collision or sudden braking, as shown in FIG. 12, the pressing force to the rotary knob 2 is changed to each small protrusion 2c. By concentrating on the contact portion with the upper end of the rotor member 8, each small protrusion 2c (fragile portion) of the rotary knob 2 is broken. As a result, each snap claw 2e is lowered by a distance L1 in the guide groove 8b, and each engagement protrusion 2d is also lowered by a distance L1 in the engagement groove 8a. Therefore, the protrusion amount L2 of the rotary knob 2 is L2 = It decreases to L−L1 = 9 mm. On the other hand, the amount of lowering of the push knob 4 is restricted when the drive unit 4g abuts on the push button switch 3, so that the pressing force on the push knob 4 is concentrated on each thin portion 4e of the annular portion 4c, thereby Each thin-walled portion 4e (fragile portion) 4 is broken. As a result, the push knob 4 is lowered in the opening 9 until the large-diameter portion 4a of the push knob 4 hits the stepped portion 2a of the rotary knob 2, so that the protrusion amount of the push knob 4 is further lower than the protrusion amount L2 of the rotary knob 2. Decrease. Therefore, since the protrusion amount with respect to the panel surface (mounting surface) of the rotary knob 2 and the push knob 4 is less than the protrusion amount L during normal use, safety is ensured in the event of a car collision or sudden braking. be able to.
[0018]
In the above-described embodiment, the case where the rotary switch 1 is used as the rotary operation type electric component has been described. However, other rotary operation type electric components such as a rotary encoder may be used instead of the rotary switch. .
[0019]
Further, the protrusion amount L during normal use of the rotary knob 2 and the push knob 4 and the protrusion amount L2 when the weakened portion is broken are not limited to the above-described embodiment, and these protrusion amounts L and L2 are those of the composite operation type electric component. It is possible to set an appropriate value according to the purpose of use and design.
[0020]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0021]
Since the rotary knob that operates the rotary operation type electric parts and the push knob that operates the push button switch are arranged on the same axis, and these rotary knobs and push knobs are each equipped with a fragile part, it is usually an in-vehicle combined operation type electric part. When using the knives, it is possible to improve the operability of both knobs (especially the rotary knob) by projecting the rotary knob and push knob to the mounting surface. When a pressing force exceeding the value is applied, the fragile part breaks and the amount of protrusion to the mounting surface of the rotary knob and push knob is reduced to ensure safety in the event of a car crash or sudden braking. Can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an on-vehicle composite operation type electrical component according to an embodiment of the present invention.
FIG. 2 is a front view of a rotary switch provided in the composite operation type electrical component.
FIG. 3 is a top view of the rotary switch.
FIG. 4 is a front view of a rotary knob provided in the composite operation type electrical component.
FIG. 5 is a bottom view of the rotary knob.
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is a front view of a push knob provided in the composite operation type electrical component.
FIG. 8 is a top view of the push knob.
FIG. 9 is a bottom view of the push knob.
FIG. 10 is an explanatory diagram showing a connected state of a rotary knob and a rotary switch.
FIG. 11 is an explanatory diagram showing a connected state of the push knob and the rotary switch.
FIG. 12 is a cross-sectional view showing a state in which a fragile portion of the composite operation type electrical component is broken.
[Explanation of symbols]
1 Rotary switch (Rotary operation type electrical parts)
2 Rotating knob 2a Stepped portion 2b Ring portion 2c Small protrusion (fragile portion)
2d engagement protrusion 2e snap claw 3 push button switch 3a stem 4 push knob 4a large diameter part 4b small diameter part 4c annular part 4d slit 4e thin part (fragile part)
4f Snap claw 4g Drive unit 5 Housing 5a Cover (mounting surface)
6 Printed circuit board 7 Stator member 7a Support wall 7b Protrusion 8 Rotor member 8a Engaging groove 8b Guide groove 9 Opening 10 Lid

Claims (3)

A rotary operation type electric part having a cylindrical rotor member, a hollow rotary knob for rotating the rotor member, a push button switch disposed inside the rotary operation type electric part, and a hollow part of the rotary knob And a push knob for pushing and operating the push button switch.
The rotary knob and the push knob are each provided with a fragile portion, and when a pressing force of a predetermined value or more is applied to the rotary knob and the push knob, each of the fragile portions is broken so that the rotary knob is attached to the rotor member. The push knob is configured to move in the axial direction of the rotor member following the rotary knob, and a guide groove extending in the axial direction is provided on the outer peripheral surface of the rotor member. An in-vehicle composite characterized in that a snap claw provided on the rotary knob is locked to an upper end of the guide groove, and a small protrusion provided as the fragile portion on the rotary knob is brought into contact with the upper end of the rotor member. Operation mechanism for operation-type electrical components. 2. The push knob according to claim 1 , wherein the push knob is provided with a step connecting the large-diameter portion and the small-diameter portion by an annular portion, and a plurality of slits extending in the circumferential direction are formed in the annular portion, thereby forming a gap between the slits. An operation mechanism for an on-vehicle composite operation type electrical component, wherein the portion positioned is the fragile portion. 3. The in-vehicle composite operation type according to claim 2 , wherein a step is provided in a hollow portion of the rotary knob, and an upper end of the step is opposed to a lower end of the large diameter portion with a predetermined interval. Electric component operation mechanism.

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