JPS60168946A - Electronic car speed sensor rotor for speed changer - Google Patents

Abstract

PURPOSE:To increase the fixing strength of a car sensor rotor to be fixed to the output shaft of automatic speed changer by providing large diameter section and small diameter section at the sensor rotor fixing section on the output shaft and fixing the sensor rotor through spigot section to the small diameter section. CONSTITUTION:When fixing an electronic car speed sensor rotor 3 to the output shaft 1 of automatic speed changer, the output shaft 1 is formed with large diameter section 1a having key groove 18 at the input side and small diameter section 1b at the output side formed continuously to said section 1a through a step 19. While the sensor rotor 3 is provided with large inner diameter section 31 and small inner diameter section 33 formed with oil path groove 33a and fitted to the output shaft 1 through crescent key 34. The small inner diameter section 33 is a spigot section 36 to be fitted over the small diameter section 1b while the intermediate outercircumference 37 is a magnet fixing section 39 for securing a magnet 38. A speed meter drive gear 4 is provided in adjacent to said rotor 3 and turned on/off through a reed switch 43.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to the attachment of an electronic sensor rotor to the output shaft of an automatic transmission.

[Prior Art] Conventionally, as shown in FIG. 1, an electronic vehicle speed sensor rotor for a transmission includes an extension housing 108 connected to a transmission case in which a transmission is housed, and a speed changer provided inside the extension housing 108. The output shaft 101 of the mechanism and the output shaft 101 are fitted onto the outside, fixed by a half-moon key 134, energized (ON) or de-energized (OFF) by a reed switch 143, and output from the output shaft 101.
At the large diameter portion 101a of the snap ring 106a,
1061), the electronic vehicle speed sensor rotor 103 of the transmission is supported together with the speedometer drive gear 104 and fixed to the output shaft 101, there are restrictions on prevention of reverse phase and machining of the output shaft 101. is provided with a step 119 as shown in Fig. 1, and the spigot between the rotor 103 and the output shaft 101 is provided on the large diameter portion 101a side.
Protrusion of the rotor 103 is avoided by providing a spigot at the magnet mounting portion 139 in the axial direction of the rotor 103. However, in recent years, as shown in FIG.
If the mounting relationship is the same as in Figure 1, the position of the magnet mounting part 39 in the axial direction of the rotor 3 is different, so the magnet is fixed to the part that protrudes from a part of the inlet, and the centrifugal force of the magnet causes vibration. Cheap. In addition, since the fitting is done in a small gap, the fitting strength is low (easily).Also, in the near future, there is a possibility that rotors of different shapes will be used at the same time depending on the vehicle model and transmission model. In that case, if the output shafts were different depending on the rotor, there would be problems in processing and assembly.

[Object of the Invention] The object of the present invention is to change the inner diameter of the rotor side from that of the type of rotor shown in Fig. 1 without changing the outer diameter of the output shaft side, and to increase the gap relationship between the output shaft and the other. By replacing the diameter side and the small diameter side, by removing the spigot on the small diameter side, it is possible to prevent the spigot from protruding (1), increasing the support for the spigot part, and reducing the beam size of the spigot part. The object of the present invention is to provide a transmission with a narrow rotor that can reduce the vehicle speed.

[Structure of the Invention] The electronic 38-speed 1-speed transmission engine of the present invention includes an extension housing connected to a transmission case housing a transmission, and an extension housing inserted into the extension housing. The above-mentioned change 3 was established!
In an electronic vehicle speed sensor rotor for a transmission, which is composed of one output shaft and a cylindrical electronic sensor rotor to which a magnet is fixed and externally fitted to a stepped lens rotor mounting portion of the output shaft,
The sensor rotor attachment portion of the output shaft has a keyway diameter portion with a key groove on the input side, the large diameter portion and a small diameter portion adjacent to the output side, and the sensor An input inner diameter portion that loosely fits into the large diameter portion of the shaft, and a small inner diameter portion that is adjacent to the output side of the input inner diameter portion and is a part of the input hole that tightly fits into the small diameter portion of the output shaft according to Oji. and the magnet is fixed to the small inner diameter portion.

[Advantageous Effects of the Invention 1] With the above configuration, the electronic vehicle speed control rotor of the transmission of the present invention has the following effects.

b) By changing the inner diameter of the rotor side from the type of rotor shown in Fig. 1 without changing the outer diameter of the output shaft, and changing the gap relationship between the output shaft and rotor between the large diameter side and the small diameter side, By removing the spigot on the small diameter side, it is possible to prevent the rotor from protruding.

口〉Rotors of different types and shapes can be flowed simultaneously depending on the vehicle model and transmission model, and it has excellent workability and compatibility.

c) Since the supporting force of a part of the inlet is increased, it is possible to prevent the rotor from falling off by 1F.

[Example] The electronic vehicle speed sensor of the transmission of the present invention has a four-noise rotor.
An explanation will be given based on an example shown in the figure.

1 is an output shaft of the transmission, 3 is an electronic vehicle speed hinge rotor of the transmission, 4 is a speedometer drive gear, 6a and 6b are ring grooves 17a formed on the outer periphery of the output shaft 1,
Snap links 17b and 17b respectively fix the adjacent D-bar drive gear 4 and the speedometer drive gear 4;
D) It is an automatic transmission with 4 speeds in the front and 1 speed in reverse.

As shown in FIG. 3, the output shaft 1 has a lubricating oil passage 11 formed inside, and the illustrated output of the lubricating oil passage 11 is connected to a flat diameter hole 12 formed at the spring end 11a, 12 exits 12
An oil passage groove 12△ formed on the outer periphery of a, an outer spline 14 that fits with the inner spline of the sleeve yoke (described later) on the output side 13, and a ring formed at a predetermined position itF on the outer periphery of the rotor mounting lock 15. In the grooves 17a, 17b and at predetermined positions beside the slightly entered horns, there is a large diameter part 1a1 of the rotor mounting position 15 to the right of the keyway 18, and a small diameter formed through the large diameter part 1a and the step 19. It consists of part 1b.

As shown in FIG. 3, the D-tor 3 has a large inner diameter part 31 and a small inner diameter part 33 in which an oil passage groove 33a is formed on the output side 32. Set in keyway 18 [
Forms a key +R35 for attaching the pressed half-moon key 34, and connects the inner periphery of the illustrated horn 31a and the large diameter portion 1 of the output shaft 1.
There is a gap 31A between the step 19 of the output shaft 1, and the small inner diameter part 33 is a part 36 of the inner diameter part 36 that tightly fits on the outer periphery of the small diameter part 1b of the output shaft 1. It consists of a magnet attachment part 39 to which is fixed.

The speedometer drive gear 4 is adjacent to the rotor 3, has an outer gear 42 formed on its outer periphery 41, and is turned ON and OFF by a reed switch 43 having a known structure and inserted into a hole 81 of the extension housing 8.

The extension housing 8 includes a protrusion 91 that protrudes from the bearing 90 to the right in the figure, an oil seal 95 provided on the inner peripheral side 91a of the protrusion 91, and the protrusion 9.
One end 93a is fixed to the outer circumferential side 91b of the oil seal 91, and a mist cover 93 that extends rearward and protects the oil seal 95 from rainwater and dust is inserted.

Automatic transmission 4512 (l is a torque converter housing (not shown) containing a torque converter as shown in FIG. 2, and A-bar 1ni live (CM)) mechanism, planetary gear transmission mechanism, clutch and J brake Shifting gear equipped with! 1i
jlf 21 and a hydraulic control m+ device 926 built in the A-il pan 25 on the lower side of the figure. Sleeve yoke 1 formed with an inner spline 73 forming an outer spline 14 of the shaft 1 and a spline fitting portion 82
0 is inserted into the extension housing 8.

The sleeve yoke 70 consists of a bearing part 71 and a hub part 72, and the bearing part 11 has the inner spline 73 formed on the inner circumferential side 71a (c) The inner spline 73 is formed on the outer circumferential side 71b of the extension housing 8 through the thrust bell ring 74. The external side 75 of the root portion 75 is rotatably supported by the portion 90 .
One end 76a is fixed to a, and the other end 76b is a cover 76 arranged parallel to the inner circumferential side of a resist cover 93 fixed to the bearing part 90, and the hub part 72 is fixed to the inner circumferential side 72.
It is connected to a universal joint 78 via a sealing material 77 at point a, and the universal joint 78 connects a propulsion shaft 79.

Each clutch and brake is engaged or released by various switching of a plurality of valves in the oil fluid control device @ 26 according to the engine output of the automatic transmission 20 and the vehicle speed of the vehicle,
Four forward speeds including A-bar drive or a 1gl reverse speed change is performed by manual switching.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an electronic vehicle speed sensor rotor of a conventional transmission, FIG. 2 is a cross-sectional view of an electronically controlled automatic transmission incorporating the electronic vehicle speed sensor rotor of a transmission according to the present invention, and FIG. 1 is an enlarged view of the main parts of the electronic vehicle speed sensing rotor of the transmission of the present invention. In the diagram 1...Output shaft 3...Electronic vehicle speed hinge rotor 4...Speedometer drive gear 8...1
Extension housing 20... Automatic transmission 2
2... Transmission case 26... Hydraulic control device agent Kenji Miguro

Claims (1)

[Scope of Claims] 1) A 1-extension housing connected to a 1-transmission transmission case in which a transmission is housed, an output shaft of the transmission inserted through the extension housing, and a magnet. A3 is an electronic vehicle speed sensor rotor of a transmission comprising a cylindrical electronic sensor rotor to which is fixed and externally fitted on a stepped sensor rotor mounting portion of the output shaft, and the sensor rotor mounting portion of the output shaft includes: The sensor 4j rotor has a main diameter portion with a key groove on the input side, the large diameter portion and a small diameter portion adjacent to the output side, and the rotor 4j has a free play 1 on the large diameter portion of the output shaft.
a large inner diameter portion to be used and an output of the large inner diameter portion are adjacent to each other;
An electronic vehicle speed sensor rotor for a transmission, characterized in that the rotor has a small inner diameter portion that is a part of the inner diameter portion that tightly fits into the small diameter portion of the output shaft, and a magnet is fixed to the small inner diameter portion.