JPH10274313A - Mounting structure of torque converter - Google Patents

Abstract

(57) [Summary] [Problem] In an automobile equipped with an automatic transmission,
The joint between the engine's crankshaft and torque converter will be improved to reduce the number of parts and the number of assembly steps. SOLUTION: On a housing 2 side of a torque converter coupled to a crank end 1, an engaging element 12 composed of a pin 13 urged in a direction protruding by a spring 14 and a case 11 for accommodating the pin is spaced. The crank end 1 facing the housing 2 is provided with a hole 1b into which the protruding pin 13 is fitted.
The crank end 1 and the housing 2 can be connected only by fitting the pin 13 into the hole 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque converter mounting structure applied to an automobile equipped with an automatic transmission.

[0002]

2. Description of the Related Art In an automobile equipped with an automatic transmission, an end of an engine crankshaft (hereinafter referred to as a crank end) is attached to a housing of a torque converter. FIG. 1 shows a conventional example of this mounting structure.
2 will be described. 1 is a crank end and 2 is a housing (case) of the torque converter. An annular front flange 3, a drive plate 4, and a rear plate 5 are overlapped on the crank end 1, and are attached to the crank end 1 with crank end bolts 6. A gear 7 is attached to the outer periphery of the drive plate 4 so as to mesh with the output gear of the starter motor.

A center piece 8 is attached to the center of the housing 2 by welding.
Fit into the center hole of the crank end 1 and the housing 2
The center is to be adjusted. A boss 9 is attached to the outer periphery of the housing 2 by welding.
The drive plate 4 is fixed with bolts 10.

When the crankshaft rotates in this structure, the rotation is transmitted from the crank end 1 to the housing 2 via the crank end bolt 6, the drive plate 4, the bolt 10 and the boss 9. The rotation transmitted to the housing 2 is transmitted to an input shaft of the transmission via a fluid clutch mechanism (not shown).

In the above structure, the front flange 3, the drive plate 4, the rear plate 5, the crank end bolts 6, the bosses 9 and the bolts 10 are required to connect the crank end 1 and the housing 2, and the number of parts is increased. There has been a problem that the assembling work is complicated.
The work of tightening the crank end bolts 6 and the bolts 10 particularly complicates the assembling work.

[0006] As a prior art concerning the mounting structure of this part, Japanese Utility Model Laid-Open No. 57-184353,
JP-A-118408 and the like disclose, but these also have a structure using bolts, so they are not much different from those in FIG.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and aims to reduce the number of parts and assembly work, and to position the crank end and the torque converter (center alignment). It is another object of the present invention to provide a torque converter mounting structure that can easily perform the torque converter.

[0008]

According to the present invention, as a means for solving the above problems, according to the first aspect of the present invention, there is provided a torque converter mounting structure for connecting an engine crank end to a torque converter housing. In the torque converter, a pair of engaging members each comprising a pin urged in a direction protruding by a spring and a case for accommodating the pin are radially mounted on the housing side of the torque converter at an interval, and the protrusion is provided on a crank end facing the housing. A hole into which a pin to be fitted is provided.

According to a second aspect of the present invention, in the first aspect, a groove is provided on the crank end side, in which the engaging element is fitted.

Further, in the invention described in claim 3, in the invention described in claim 1, when the pin provided on the crank end side is screwed into a projecting hole, the pin is pressed. A female screw for screwing a screw to be retracted is provided.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention.
Will be described. An annular boss 1a is provided at the center of the crank end 1, and the boss 1a is
A center piece 8 attached by welding is fitted to the center of the crank end 1 and the housing 2. A box-shaped case 11 having only the outer peripheral side of the housing 2 opened is mounted on the housing 2 side of the torque converter by welding one side thereof. This case 11 corresponds to 1 in FIG.
Only one is shown, but a plurality are radially arranged at appropriate intervals.

A pin 13 forming an engaging element 12 together with the case 11 is housed inside the case 11, and the pin 13 is urged in a projecting direction by a spring 14. The pin 13 has a shape in which the upper portion is reduced in diameter as shown in a plan view in FIG. 2 and a front view in FIG. 3, and is prevented from falling out of the case 11 by a step 13a therebetween.

An outer peripheral cross-sectional shape of the crank end 1 is bent toward the housing 2, and a hole 1 b directed in a diametrical direction is provided in that portion, so that a pin 13 is fitted. A tapered guide portion 1c is formed inside the outer peripheral portion of the crank end 1. This guide part 1
When the head of the pin 13 abuts, the head c slides to prevent the crank end 1 from moving toward the housing 2. In the vicinity of the outer peripheral portion of the case 11, a ring-shaped (ring-shaped ring having an extremely larger hole than that in FIG. 12) drive plate 4 is welded, and the drive plate 4 meshes with the output gear of the star motor. Gear 7 is mounted.

FIG. 4 shows another embodiment of the present invention. In this case, in the above structure,
A hole 1 provided on the side of the crank end 1 from which the pin 13 protrudes.
A screw 1d is formed on the upper part of the female screw 1d to press and retract the pin 13 when screwed into the female screw 1d.
5 is screwed.

FIG. 5 shows a screw (bolt) 15. As shown in the figure, the screw 15 is composed of a head portion 15a, a flange portion 15b, a screw engraved portion 15c, and a rod portion 15d. When the screw 15 is screwed, the pin 13 is pressed by the tip of the rod portion 15d and retracted. .

FIG. 6 is a plan view of the engagement element 12 as viewed from above, and FIG. 7 is a front view thereof. As illustrated, the case 11 of the engagement element 12 is substantially rectangular in plan view. As shown in FIGS. 8 and 9, a groove 1 e is provided inside the crank end 1.
Are formed, and the side surface of the case 11 can be fitted. By this fitting, the transmission of the rotational torque from the crankshaft side to the torque converter side is performed by the pin 1
3 and the hole 1b of the crank end 1 as well as the engaging element 12
In this case, the strength is not insufficient.

FIG. 10 and FIG. 1 showing its BB section.
FIG. 1 shows still another example of the embodiment of the present invention. In this case, one surface of the crank end 1 (the engaging element 1
On the second side), an annular rib 1f is integrally formed. Rib 1
By providing the shaft f, not only the engaging element 12 but also the rib 1f receives the rotational torque given from the crank end 1 to the housing 2, and the rigidity of this portion of the crank end 1 is increased. Can be.

In the structure shown in each of the above figures, when the crank end 1 is connected to the housing 2, the engaging member 12 on the housing 2 side is positioned so as to face the groove 1e on the crank end 1 side. The end 1 and the housing 2 are brought close to each other. At this time, spring 1
The head of the pin 13 urged in the projecting direction by the abutment 4 contacts the guide portion 1c, retracts against the spring 14, and slides smoothly to the hole 1b. When the pin 13 matches the hole 1b, the pin 13 is securely fitted into the hole 1b by the force of the spring 14. At the same time, the case 11 fits into the groove 1e.

In order to separate the clutch end 1 from the housing 2, the pin 13 is pressed from the head side to separate it from the hole 1b and to separate them, but in the case shown in FIG. 4, the screw 15 is connected to the female screw 1d. By screwing, the pin 13 can be easily pushed.

When the engine operates and the crankshaft rotates, the rotational force is transmitted from the crank end 1 to the
2 to the housing. The engaging element 12 applies the force received by the pin 13 to the housing 2 via the case 11.
In the case where a part of the housing 1 is engaged with the groove 1e of the crank end 1, the transmission is also performed through the case 11 from the groove 1e.

In the above-described embodiment, the crank end 1 is provided integrally with the crankshaft. However, the crank end 1 may be manufactured separately and connected without being integrated.

[0022]

Since the present invention is a mounting structure for a torque converter constructed as described above, the number of parts is significantly reduced in the invention described in claim 1 as compared with the conventional structure. In addition, the assembling work is greatly facilitated accordingly. According to the second aspect of the present invention, since the engaging member is fitted into the groove provided on the crank end side, the transmission of the rotational torque is performed not only through the pin but also through the case of the engaging member. improves. Furthermore, according to the third aspect of the present invention, the pin can be retracted only by screwing in the screw to advance the coupling between the torque converter and the crank end, so that the disassembling operation becomes extremely easy. .

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of a pin in FIG. 1;

FIG. 3 is a front view of the one in FIG. 2;

FIG. 4 is a cross-sectional view of another example of the embodiment of the present invention.

FIG. 5 is a front view of the bolt in FIG. 4;

FIG. 6 is a plan view of the engagement element.

FIG. 7 is a front view of that of FIG. 6;

FIG. 8 is a sectional view showing a groove provided in a crank end.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a sectional view of still another example of the embodiment of the present invention.

FIG. 11 is a sectional view taken along the line BB of FIG. 10;

FIG. 12 is a sectional view showing a conventional structure.

[Description of Signs] 1 Crank end 1b hole 1c Guide portion 1d female screw 1e groove 2 housing 11 case 12 engaging element 13 pin 14 spring 15 screw

Claims (3)

[Claims] In a torque converter mounting structure for coupling a crank end of an engine to a housing of a torque converter, a pin urged in a projecting direction by a spring and a case for housing the pin are provided on a housing side of the torque converter. A mounting structure for a torque converter, comprising: a plurality of engaging members radially mounted at intervals; and a hole into which the protruding pin is fitted is provided in a crank end facing the housing. 2. The mounting structure for a torque converter according to claim 1, wherein a groove in which the engaging element is fitted is provided on the crank end side. 3. A screw according to claim 1, wherein a female screw for screwing a screw which presses and retracts the pin when screwed is provided in a hole provided on the crank end side where a pin projects. Mounting structure for torque converter.