JPS6213874Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gear shift position detection device mainly used in automobiles.

BACKGROUND OF THE INVENTION In modern automobiles, for example, for the purpose of improving fuel economy, many of them perform controls such as cutting off fuel supplied to the engine under certain driving conditions. However, in order to perform such control appropriately, it is necessary to collect various types of information for knowing the driving situation of the vehicle and sequentially input it to the control device. One of the pieces of information is information for determining whether the transmission is set at a particular shift position, such as a neutral position or low position, or another shift position. Conventionally, in order to obtain this kind of information, for example, a cam or the like was installed in the control rod for transmitting the movement of the gear shift lever to the transmission, and this cam biased the limit switch to set it at a specific gear shift position. However, with such a configuration, if there are multiple specific shift positions to be detected as described above, each shift position is detected using multiple limit switches. Each must be detected separately. Therefore, there are disadvantages such as a large number of parts, a complicated structure, and a decrease in reliability.

The present invention has been developed in view of these circumstances, and includes an operating pin protruding from a portion that responds to the gear shift lever, and an engaging portion that engages with the operating pin, and is biased by the operating pin. A rotating arm that rotates when the rotating arm rotates, and a switch that outputs a signal to that effect when the rotating arm rotates, and the engaging portion is operated when the gear shift lever is operated to a specific position. The object of the present invention is to provide a shift position detecting device in which the above-mentioned disadvantages can be solved by forming the actuating pin in a shape that prevents the actuating force from being transmitted to the rotating arm.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the present invention applied to an automobile. In the figure, 11 is a gear shift lever, 12 is a pivot structure for pivotally supporting the gear shift lever 12, and 13 is a pivot structure for supporting the gear shift lever 12. An extension rod 14 connects the pivot structure 12 to a power unit (not shown), and a control rod 14 connects the lower end of the gear shift lever 11 to a transmission forming a part of the power unit. Gear shift lever 11
is a normal type having an operation knob 11a at the upper end, and as is well known, by tilting the shift lever along a predetermined shift pattern A, the control rod 14 is rotated or moved forward or backward. and the transmission has a plurality of shift positions, for example, low 1,
Second 2, Third 3, Top 4, High Top 5, Back R or Neutral N1, N2, N
It is designed to be selectively set to one of the three positions. Note that the control rod 1
4 is a first member 1 connected to the speed change lever 12;
4a and a second member 14b connected to the transmission are connected by a universal joint 15.

A shift position detection device 16 according to the present invention is provided in association with the control rod 14. The shift position detection device 16 includes a portion that responds to the shift lever 11, such as an actuating pin 17 protruding from the joint body 15a of the universal joint 15.
and a rotating arm 19 which has an engaging portion 18 with which the operating pin 17 engages and rotates when urged by the operating pin 17, and a rotating arm 19 that switches when the rotating arm 19 rotates. A switch 21 outputs a signal indicating that
It is equipped with. More specifically, the actuation pin 17 is cantilever-supported by fixing its base end to the joint body 15a of the universal joint 15 by welding or the like, and when the shift lever 12 is operated, the actuation pin 17 is cantilevered. The tip of the pin 17 operates so as to draw a pattern B corresponding to the speed change pattern A of the speed change lever 11. In addition, rotating arm 1
Reference numeral 9 is a plate-shaped member having a through-hole engaging portion 18 formed at its rotating end, into which the tip of the operating pin 17 is fitted. The engaging portion 18 is formed in such a shape that the biasing force of the operating pin 17 cannot be transmitted to the rotating arm 11 only when the shift lever 11 is operated to a specific shift position. Specifically, as shown in FIG. 2, the engaging portion 18 is provided with a slit portion 18a that is elongated in a direction perpendicular to the axis of the control rod 14, and on one side edge of one end of the slit portion 18a. It has a hook shape consisting of a continuous notch 18b, and only when the shift lever 11 is operated to the neutral position N1, N2, N3 or the low position 1, the biasing force of the operating pin 17 is applied to the rotating arm. It prevents it from being transmitted. Also,
The switch 21 is shown cutaway in FIG.
A rotor 23 is rotatably housed within the body 22,
This rotor 23 holds contacts 26 made of a conductive material that contact terminals 24 and 25 implanted in the back wall of the body 22.
The base end portion of the rotating arm 19 is attached to the end surface of the shaft portion 23a. And the rotating arm 19
When the contact 26 is held at the neutral position n shown in FIG. or b, the contact 26 separates from both the terminals 24, 25, and the terminals 24, 25
25 is in a non-conducting state. Note that the rotating arm 19 is connected to the spring 2
7 or the like, so that it can always return to the neutral position n by itself. Further, the body 22 of the switch 21 is supported by the power unit via a bracket (not shown).

If the configuration is like this, shift lever 1
1 to the left or right when it is in the neutral position, the control rod 14 rotates and the operating pin 17 rotates upward or downward, but in this case, the operating pin 17 The rotary arm 19 only moves back and forth within the slit portion 18a of the switch 2.
1 is kept in the ON state. Further, when the gear shift lever 11 is shifted to the low position 1, the control rod 14 is moved backward and the actuation pin 17 is moved rearward. exists. Therefore, the retraction force of the actuating pin 17 is not transmitted to the rotating arm 19, and therefore, in this case as well,
The rotating arm 19 is held at a neutral position n.
On the other hand, when the shift lever 11 is operated to shift to the second 2, third 3, top 4, high top 5, or back R position, when the operating pin 17 moves forward or backward, the engaging portion 18
As a result, the rotating arm 19 is urged by the actuating pin 17 and moves to the actuating position a.
or b, and the switch 21 is turned OFF. Therefore, based on the ON-OFF signal output from the switch 21, it is possible to determine whether the shift lever 11 is set at a specific shift position (neutral position or low position). Therefore, this
The ON-OFF signal can be used as one piece of information when performing the above-mentioned fuel cut control and the like.

In addition, in the above embodiment, a case was explained in which the specific shift positions are the neutral position and the low position, but it goes without saying that the present invention is not limited to such a case, and the scope of the present invention does not deviate from the spirit of the present invention. Various modifications are possible.

Furthermore, the protruding position of the operating pin is not limited to the position shown in the illustrated embodiment, but may be at any other position as long as it is a part that responds to the gear shift lever.

Because the present invention is configured as described above, even if there are multiple specific shift positions to be detected, it is possible to detect whether the shift lever has been operated to one of these specific shift positions using a single switch, thereby providing a shift position detection device that has a small number of parts, a simple structure, and is highly reliable.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic perspective view, FIG. 2 is a front view showing a gear shift position detection device, and FIG. 3 is a partially cutaway side view showing the same device. . 11... Gear shift lever, 14... Control rod, 15... Universal joint, 16... Gear shift position detection device, 17... Operating pin, 18... Engaging portion, 19
...Rotating arm, 21...Switch, N1, N
2, N3, 1...Specific shift position (neutral position, low position), A...shift pattern, B...pattern.

Claims (1)

[Scope of utility model registration request] An operating pin that protrudes from a part that responds to a shift lever for a transmission and operates in a pattern corresponding to the shift pattern of the shift lever, and an engaging portion that engages with the operating pin. It is equipped with a rotating arm that is biased to rotate, and a switch that outputs a signal to that effect when the rotating arm rotates. A shift position detection device characterized in that the shift position detection device is formed in a shape such that the biasing force of the operating pin cannot be transmitted to the rotating arm only when the gear shift position is operated.