JPH0755331Y2 - Vehicle starter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a starter for a vehicle, and to an improvement in a connecting structure of a center case and a housing thereof.

[Prior Art] For the purpose of downsizing, assembling and manufacturing of a vehicle starter, a separate center case is provided between a yoke of a starter motor and a housing for accommodating a pinion and a clutch. A pinion lever is internally provided in the center case, and such a structure is disclosed, for example, in Japanese Utility Model Publication No. 52-20642.

In the structure described in the publication, in order to mass-produce the center case by die casting, a part of the circular connection opening with the housing is cut radially outward along the longitudinal direction of the pinion lever. Thus, the connection opening of the housing is formed with a protrusion that closes the notch.

[Problems to be Solved by the Invention] By the way, it may be desired to change the relative mounting angle between the motor yoke and the housing according to the installation space of various vehicles. However, in the above-described conventional structure, there is a housing protrusion whose formation angle is fixed. I had to fix the whole housing.

The present invention solves this problem, and an object of the present invention is to provide a vehicle starter in which the relative angle between the center case and the housing can be easily changed.

[Means for Solving the Problems] To explain the configuration of the present invention, a motor yoke 1 (FIG. 2)
A vehicle starter provided with a center case 2 on the front side of which a housing 3 is connected, and a pinion lever 5 for moving a pinion 4 connected to a motor drive shaft via a clutch back and forth is provided in the center case 2. In the center case 2, the connection opening 21 (first
(FIG. 5) is composed of a main portion 22 having a truncated circular shape and a cut portion 23 (FIG. 5) cut outward from the main portion 22 in the radial direction. The cut portion 23 has sealing portions 61, 62 on the front and back sides. (See FIG. 7) Formed plate member 6
The back surface seal portion 62 so as to be tightly closed, and the front surface seal portion 61 of the plate member 6 is connected to the connection opening main portion.
Molded into an arc shape that connects the 22 missing circles, these surface seal parts
The circular connection opening 31 of the housing 3 in which 61 and the connection opening main portion 22 are provided with the mounting holes 34 of the same pitch as the mounting holes 24 of the connection opening main portion 22 with the packing 7 (FIG. 2) interposed. It is a connection.

[Operation] In the starter having the above structure, the center case connection opening 21
The notch 23 is closed by a plate member 6 which is separate from the housing 3, and a surface seal portion 61 of the plate member 6 forms a circular connection opening continuous with the center case connection opening main portion 22.
Then, the circular connection opening 31 of the housing 3 is brought into contact with this, and both are freely connected at a plurality of angular positions where the mounting holes 24, 34 of the housing 3 coincide with each other.

At this time, the seal of the center case notch 23 is the plate member 6 described above.
The back side seal portion 62 and the seal of the connecting portion are secured by the packing 7.

[Embodiment] In FIG. 2, the front surface of the motor yoke 1 (the left end surface in the drawing)
A housing 3 is connected to the center via a center case 2. The housing 3 is composed of a cover portion 33 having a half-split umbrella shape and a flange portion 32 at a base end, and a pinion 4 is located in the cover portion 33, which is a motor drive shaft (projected from the motor yoke 1). (Not shown) is connected via a known clutch.

The flange portion 32 has a circular connection opening 31 at the center (Fig. 3).
A substantially triangular plate body having a pair of mounting holes 34 which are adjacent to each other at a predetermined pitch on the edge of the connection opening at a predetermined pitch.
Is provided.

The center case 2 is formed by die casting, and has a connection opening 22 (FIG. 1) on its front surface.
An opening 24 (FIG. 4) into which the plunger tip of the magnet switch 8 (FIG. 2) attached to the upper side surface of the motor yoke 1 projects is provided in the upper portion of the rear surface, and one end is connected to the projected plunger tip. A pinion lever 5 (FIG. 2) extending downward is disposed in the case 2.

The connection opening 21 is composed of a circular main portion 22 lacking a top portion and a notch portion 23 (FIG. 5) cut upward from the top portion, and the main portion 22 has a corrugated outer periphery (see FIG. 2). ) Along with a plurality of mounting holes 24 at the same pitch as the mounting holes 34 of the housing 3
Is provided.

The notch 23 covers the plate member 6 (FIG. 1) in close contact with it, and the plate member 6 is, as shown in FIG. 6 and FIG.
Rubber or resin seal parts 61 and 62 are integrally formed on the front and back of a metal plate 63. The plate member 63 is fixed by riveting by fitting the mounting holes 64 provided on both sides to the rivet pins 25 projecting on the two faces of the center case 2 on both sides of the notch 23. As a result, the back surface seal portion 62 having a shape along the peripheral edge of the cut portion 23 closely contacts the peripheral edge and closes the cut portion 23.

The surface seal portion 61 of the plate member 6 projects forward from the plate material 63 and forms the same surface as the connection opening main portion 22.
The lower edge of 61 is continuous in an arc shape that supplements the missing circle of the main portion 22. The circular connection opening 21 composed of the surface seal portion 61 and the main portion 22 is formed with a seal receiving surface 26 which is further lowered around the entire inner peripheral edge, and the packing 7 arranged on the seal receiving surface 26 (FIG. 2). Through the housing to the connection opening 22 through
The connection opening 31 is brought into abutment with the spigot fitting. In this state, the top surface of the surface seal portion 61 is in close contact with the flange portion 32 of the housing 3.

The housing 3 and the center case 2 which are fitted with each other in the circular connection openings 22 and 31 are connected by inserting bolts into the respective mounting holes 34 and 24.
Since they are provided at the same pitch, it is possible to freely select a plurality of angular positions (six positions in the embodiment) in which they coincide with each other, set the relative angular positions of the housing 3 and the center case 2, and connect them. .

In the above embodiment, the plate member need not be fixed by riveting, but may be fixed with screws. Further, the surface seal portion of the plate member and the packing can be integrally formed.

[Advantages of the Invention] As described above, the vehicle starter of the present invention is capable of freely selecting the relative angular position of the housing and the motor yoke from a plurality of positions while maintaining a good sealing property of the connecting portion. The degree of freedom in vehicle installation can be improved and cost reduction can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a center case with a housing removed, FIG. 2 is a view taken in the direction of arrow A, FIG. 2 is an overall side view of a vehicle starter, and FIG. 3 is a front view of the housing. 2 is a view taken in the direction of arrow B in FIG. 2, and FIG. 4 is an enlarged cross-sectional view of the upper part of the center case,
Fig. 5 is a sectional view taken along the line IV-IV of Fig. 5, Fig. 5 is an enlarged front view of the center case, Fig. 6 is a front view of the plate member, and Fig. 7 is VI of Fig. 6.
It is a sectional view taken along the line I-VII. 1 ... Motor yoke 2 ... Center case 21 ... Connection opening 22 ... Connection opening main part 23 ... Notch 24 ... Mounting hole 3 ... Housing 31 ... Connection opening 34 ... Mounting hole 4 ... Pinion 5 ... Pinion lever 6 ... Plate member 61 , 62 ... Seal part 7 ... Packing

Claims (1)

[Scope of utility model registration request] A vehicle having a pinion lever for moving a pinion connected to a motor drive shaft through a clutch back and forth in the center case, the housing being connected to the front surface of the motor yoke with the center case interposed therebetween. In the starter for a vehicle, the center case is configured by a main portion having a truncated circular shape and a notch portion that is cut outward from the main portion in a radial direction, and a sealing portion is provided on the front and back sides of the notch portion. The formed plate member is closed by closely adhering it to the back surface seal portion, and the surface seal portion of the plate member is formed into an arc shape connecting the missing circles of the connection opening main portion, and the surface seal portion and the connection opening main portion are formed. A vehicle starter characterized in that a circular connection opening of the housing having mounting holes having the same pitch as the mounting holes of the main portion of the connection opening is connected with a packing interposed.