JPH0468726B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a rotary switch device, and more particularly to a rotary switch device suitable for operating an automatic transmission of an automobile by a driver's hand. This type of rotary switch device is provided with a locking device for the rotation operating member. This is, for example, in the case of a switch device that operates a transmission in an automobile, to prevent the danger of the transmission being changed to reverse gear unnecessarily due to an erroneous operation while the vehicle is driving. Possible locking devices include one in which the lock is released by pushing the rotational operation member itself in the direction of the rotation axis, or one in which a lock release button is provided at a fixed position near the rotational operation member, but the former Since the push button operation felt like being performed with the whole arm, it did not match the feeling of operating a rotary switch with just the hand, and the operation was poor, as the user could unintentionally rotate the rotary operating member too much. . In addition, the latter is for each position of the rotation operation member.
The position of the lock release button was different, which caused problems with operability. The present invention has been made in view of the above points, and it aims to improve the operability, and also forcibly prevents the switch from shifting to a dangerous position based on the switch position and vehicle speed, thereby improving the operability and safety. The purpose is to provide a rotary switch device. Embodiments of the present invention will be described below based on the drawings. Fig. 1 is a sectional view of the embodiment, and Fig. 2 is an exploded perspective view of the main parts.A cylindrical operating member 2 is rotatably fitted around a fixed member 1 fixed to the automobile body. A cylindrical push knob 3 is fitted inside the operating member 2 so as to be slidable in the rotation axis direction, and the operating member 2 and the push knob 3 are connected to the inner circumferential surface of the operating member 2 and the outer circumferential surface of the push knob 3. Groove 4 formed in
mutual rotation is regulated by. The end of the fixing member 1 located inside the push knob 3 forms a cylindrical body 1a, and a stopper 1b projecting like a brim is provided at the tip of the cylindrical body 1a. A ring-shaped interlocking member 5 is loosely fitted between the outer peripheral surface of the cylindrical body 1a and the inner peripheral surface of the push knob 3, and this interlocking member 5 rotates together with the push knob 3. It constitutes a part of the push knob 3, and is always urged outward along the rotation axis by a coiled return spring 6. Moreover, inside the cylindrical body 1a of the fixing member 1,
The contact board 7 is fixed, and the low, second,
Contacts 7a, 7b, 7c, etc. corresponding to the vehicle transmissions such as drive, neutral, reverse, parking, etc. are provided on the board 7, respectively, and these contacts 7a, 7b, 7c,... are connected to the outside of the switch device by lead wires 8. electrical circuit (not shown)
It is connected to the. A movable contact 9a corresponding to this contact is provided on a rotary plate 9 fixed to the push knob 3 by fitting a protruding shaft 3b formed on the push knob 3 into a shaft hole 9b, and the movable contact 9a is fixed to the push knob 3 by its own elasticity. It is in ballistic contact with one of the... Furthermore, in order to provide a sense of moderation in the rotation operation of the operating member 2, a recess 1c is formed on the inner circumferential surface of the fixed member 1 at a position corresponding to the number of contacts and the arrangement angle. A pin 11, which is biased from the side by a spring 10, is mounted on the rotary plate 9 so as to engage and disengage. In addition, in order to provide a feeling of pressing the push knob 3, a ball 13 biased by a spring 12 is provided on the inner shaft portion of the fixing member 1, and the ball 13 is engaged with and disengaged from the groove 3d of the support shaft 3a. I have to. Next, details of the locking and releasing structure in this embodiment will be explained with reference to an exploded perspective view in FIG. 2 and a developed view in FIG. 3. The stopper 1b of the fixing member 1 is made up of a plurality of claws with varying lengths and heights of the flange, while the interlocking member 5 loosely fitted around the outer periphery of the fixing member 1 has two stepped steps at one end. It is provided with protrusions 5a and 5b.
When the claws and the protrusions 5a, 5b engage, the rotation of the push knob 3 and the operating member 2 is restricted.
When the push knob 3 is pushed in the direction of the rotation axis and the interlocking member 5 is slid against the return spring 6, the engagement between the pawls 5a and 5b is released, and the push knob 3 and the operating member 2 are rotated. movement becomes possible. The push knob 3 and the interlocking member 5 are interlocked by engagement between a boss 3c provided on the inner wall of the pushbutton knob 3 and a notch 5c formed at the end of the interlocking member 5. Therefore, they are always engaged and integrated. The operation of this embodiment will be explained based on FIG.
FIG. 3 shows the transmission in the parking P position. In the parking position, the protrusion 5a engages the pawl 1d and pawl 1e of the stopper 1b.
The rotation is restricted. If you press the push knob 3 and move the interlocking member 5 downward, the engagement will be released, so if you turn the push knob 3 and the operating member 2 in this state, the interlocking member 5 will rotate (as shown in Figure 3). (move to the left) and click Claw 1
The next reverse R position is reached with the protrusion 5a in contact with f. Since there is no pawl on the stopper 1b from the reverse R position to the neutral N position, simply rotating the operating member 2 causes the protrusion 5a to fall off from the pawl 1f, making it easy to move. Furthermore, the change from neutral N to drive D is also stopper 1.
b does not have a claw and can be operated simply by rotating the operating member 2. Next, from the drive D to the second S, there is a pawl 1g on the stopper 1b, so by sliding the push knob 3 and sliding the interlocking member 5 in the rotation axis direction, the protrusion 5a is placed on the pawl 1g. I'll do it. Furthermore, in order to move to low L, it is necessary to move the protrusion 5a onto the claw 1h higher than the claw 1g, so it is also necessary to slide the push knob 3. In this way, when moving the protrusion 5a from a part without a claw to a part with a claw, or from a low claw to a high claw, it is necessary to operate the push knob 3, and generally between the parking P and reverse R positions. , the stopper 1b is operated for switching from neutral N to reverse R, switching from drive D to second S, and switching from second S to low L. In the above example, even if there is a mechanical lock provided by the push knob 3, it is possible to freely change the position by pressing the push knob 3. Therefore, it may not be appropriate to perform the switching operation itself. For example, switching to parking P while driving (+3 km/h or more, -3 km/h or more), or switching to parking P while driving (+10 km/h or more).
These include switching to reverse R when driving at higher speeds (over 100 km/h), and switching to second S when driving at high speeds (over 100 km/h). In this case, although not shown, a means for detecting the vehicle speed and a means for detecting the position of the switch device are provided, these are judged by a logic circuit, and the sliding operation of the push knob 3 is disabled by an actuator such as a solenoid. By this,
Unnecessary switching operations can be prevented. The actuator 14 is indicated by a two-dot chain line in FIG. 1, and is adapted to engage with and disengage from the tip of the support shaft 3a of the push knob 3 as the operating member 14a moves in and out, thereby regulating the sliding movement of the push knob 3. The table below shows whether the actuator 14 operates depending on the presence or absence of a mechanical lock and the vehicle speed when the transmission shifts from the current position to another position.

[Table] Fig. 4 is a side view showing the switch part of the switch device, in which the fixed side contacts 7a, 7b, 7c... are arranged on the board 7, and the common terminal 7a' and the contacts 7a, 7c...
b, 7c, . . . are shown in contact with two movable contacts 9a. In addition, in the above embodiment, the push knob 3
and the interlocking member 5 are constituted by separate members, and the interlocking member 5 is fitted into the push knob 3, and the boss 3c of the push knob 3 is engaged with the notch 5c of the interlocking member 5, so that they operate integrally. Although shown, it goes without saying that the push knob 3 and the interlocking member 5 may be formed integrally. As explained above, the present invention is designed so that the lock of the operating member is released by sliding the push knob disposed inside the cylindrical operating member in the direction of the rotation axis. The operating member can be rotated, the force of the push operation and the rotation operation are well balanced, the operability is improved and the operation is stable, and the relationship between vehicle speed and gear ratio is improved. Also, for other safety reasons, we made it impossible to change the switch position when the vehicle speed exceeds a certain level, which prevents accidents such as damage to the transmission, and also improves safety. It can be expected to have great effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts, Fig. 3 is an exploded view of the main parts to explain the lock function, and Fig. 4 is a contact part. FIG. 1... Fixed member, 1b... Stopper, 2... Operating member, 3... Push knob, 6... Return spring,
7a, 7b, 7c... contacts, 9a... movable contacts.

Claims (1)

[Claims] 1. A fixed member having a plurality of fixed contacts, and a movable contact for the plurality of fixed contacts,
a cylindrical operating member rotatably disposed around the fixed member; a push knob disposed inside the operating member that rotates integrally with the operating member and is slidable in the rotational axis direction; an actuator that is provided near the push knob and is driven in relation to the speed of the vehicle and the position of the movable contact to restrict sliding of the push knob; and a return spring that biases the push knob in the direction of the rotation axis. , engages with the push knob to integrally rotate, engages with the fixing member to prevent rotation of the operating member, and slides the push knob against the return spring, thereby A rotary switch device comprising: a connecting member that releases engagement with a fixed member; 2. The rotary switch device according to claim 1, wherein the push knob and the connecting member are integrally formed.