JPH04129951U - engine flywheel - Google Patents

Abstract

(57) [Summary] [Purpose] To control the displacement of the bearing retainer that prevents the bearing that rotatably supports the second flywheel body of the flywheel equipped with a damper to the boss of the first flywheel body from escaping from the boss. To surely prevent the damper action of a flywheel from being inhibited. [Configuration] The flywheel 10 of the engine includes the damper 1
It consists of a first flywheel main body 14 and a second flywheel main body 18 which are connected via a cylindrical shaft 6. 1st
The bearing 26 that rotatably supports the second flywheel body 18 on the boss 24 of the flywheel body 14 is prevented from escaping from the boss 24 by a bearing retainer 28. This bearing retainer 32 is attached to the first flywheel body 14 by a mounting bolt 32 that is separate from the flywheel bolt 30 that connects the first flywheel body 14 to the crankshaft 12.
It consists of a restraining plate 34 screwed into the boss 24 of the flywheel body 14.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an engine flap equipped with a damper that absorbs sudden engine rotational fluctuations. This relates to improvements to the lie wheel.

0002

[Conventional technology]

This type of flywheel consists of a first wheel connected to the engine's crankshaft. A flywheel body is coupled to this first flywheel body via a damper. a second flywheel body, the second flywheel body being The flywheel is rotatably supported via a bearing on the boss of the flywheel body. The bearing is secured by a bearing retainer attached to the boss of the first flywheel body. The bearing retainer is held so that it does not escape from the boss, and the bearing retainer is also clamped to the boss. The flywheel bolts connecting the shafts were tightened and fixed together. .

0003 In the damper, the first flywheel body faces the second flywheel body. It engages a torsion spring provided on the surface and this torsion spring. a driven plate, which is driven by a second fly. Combined with the wheel body.

0004 The first flywheel body is rotated by the engine crankshaft. , the second flywheel body has a torsion spring and a driven plate. It is driven from the first flywheel body via the first flywheel body. Rapid fluctuations in engine speed If so, the damper will compensate for this rapid rotational fluctuation by compressing the torsion spring. Absorb.

[0005]

[Problem that the idea aims to solve]

As already mentioned, in the prior art flywheel, the bearing retainer is The flywheel bolt that connects the crankshaft to the boss of the wheel body Because the flywheel bolts were tightened together, the flywheel bolts were easily loosened, and the bearing retainer was loosened. This displaces the bearing and thus prevents smooth rotation between the first and second flywheel bodies. The first and second flywheel shafts are caused by sudden rotational fluctuations of the engine. The flywheel cannot reliably absorb relative mechanical displacements of the body. may inhibit the damper action of

[0006] In view of the above, the purpose of the present invention is to prevent the bearing retainer from loosening, and therefore prevent the bearing retainer from loosening. We offer an engine flywheel that does not impede the damper action of the flywheel. It is about providing.

[0007]

[Means to solve the problem]

The first problem-solving means of this invention is to attach a flywheel to the engine crankshaft. a first flywheel body connected by a bolt; It consists of a second flywheel body coupled to the eel body via a damper, The second flywheel body is connected to the boss of the first flywheel body via a bearing. It is rotatably supported, and the bearing is held by a bearing retainer attached to the boss. In the engine flywheel, the bearing retainer is the first flywheel body. The retainer is attached to the boss by a mounting bolt that is separate from the flywheel bolt. To provide a flywheel for an engine, characterized in that the flywheel is made of an elongated plate. It is in.

[0008] The second problem-solving means of the present invention is a bolt connected to the engine crankshaft. a first flywheel body having a base and a damper on the first flywheel body; a second flywheel main body, which is connected to the second flywheel body via a The flywheel body is rotatably supported by the boss of the first flywheel body via a bearing. , the bearing is held in place by a bearing retainer mounted on the boss of the engine. In the wheel, the bearing retainer engages in the engagement groove of the boss of the first flywheel body. An engine flywheel characterized in that it consists of a restraining plate mounted as a The objective is to provide the following tools.

[Effect]

In this way, the bearing retainer is attached to the boss of the first flywheel body using the mounting bolt. The clamp consists of a retaining plate that is attached to the boss or inserted into the engagement groove of the boss. by means separate from the flywheel bolt connecting the rank shaft to this boss. If it is fixed, it is necessary to attach a holding plate to hold the bearing in place like in the conventional co-tightening. The means will not loosen, so the bearing retainer will not loosen and the bearing will not be displaced. The damper function of the flywheel can be maintained reliably.

[0009]

【Example】

Embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 show the embodiments of the present invention. A flywheel 10 of an engine is shown, and the flywheel 10 of this engine is It is connected to the engine crankshaft 12 by a flywheel bolt 30. The first flywheel main body 14 and the first flywheel main body 14 have a damper structure. A second flywheel body 18 is connected to the flywheel body 18 via a bridge 16. A disc clutch (not shown) is incorporated into the second flywheel main body 18, The output shaft of this disc clutch is connected to the transmission.

0010 In the damper 16, the first flywheel body 14 is connected to the second flywheel body 1. A plurality of torsion springs 22 provided on the surface facing the and a driven plate (not shown) that is engaged with and driven by the spring 22. This driven plate is meshed and coupled to the second flywheel body 18. has been done.

[0011] During normal operation, the first The flywheel main body 14 is connected to the driven gear via a torsion spring 22. This driven plate rotates to the second flywheel body 18. transmit power. When there is a sudden change in the rotation of the engine, the damper 16 causes the torsion spring 2 to 2 to absorb this rapid rotational fluctuation, the second flywheel body 18 to drive.

0012 The second flywheel body 18 is connected to the boss 24 of the first flywheel body 14. is rotatably supported via a bearing 26, and this bearing 26 is attached to the boss 24. It is held by a bearing retainer 28. As shown in FIG. 2, the bearing retainer 28 is mounted separately from the flywheel bolt 30. Screw into the boss 24 of the first flywheel body 14 with the mounting bolt 32 It consists of a restraining plate 34 attached with a.

[0013] In the embodiment of FIGS. 1 and 2, the boss 24 has a recessed inner flat portion 24a on the inner diameter side. and an outer flat part 24b protruding from the outer diameter side, and the flywheel bolt 30 is , is connected to the crankshaft 12 at the inner flat part 24a, and the holding plate 34 is connected to the crankshaft 12 at the inner flat part 24a. It is attached to the flat portion 24b with a mounting bolt 32.

[0014] In this way, the bearing retainer 28 is mounted on a separate mounting bolt from the flywheel bolt 30. A holding plate fixed to the boss 24 of the first flywheel body 14 by a 34, the bearing retainer 28 will not loosen as in the case of conventional co-tightening. Therefore, the bearing 26 does not displace, and the damper 16 of the flywheel 10 Functionality can be maintained reliably.

[0015] In the embodiment shown in FIGS. 1 and 2, the boss 24 has stepped inner and outer flat surfaces. Although the boss 24 has flat portions 24a and 24b, as shown in FIG. It has the same flat surface over its entire surface, and there are crankshafts on the inside and outside of it. Screw the flywheel bolt 30 for connecting the foot and the mounting bolt 32 for the restraining plate. It can be crowded. Moreover, as shown in FIGS. 4 and 5, the flywheel bolt 30 and The mounting bolts 32 may also be mounted with the mounting bolts 32 shifted in the circumferential direction.

[0016] 6 and 7 show another modification of the present invention, in which the holding plate 34 is It consists of an annular plate 34A, which has flywheel bolts 30. It has an escape notch 34a in the part where it is located. Such a restraining plate 34 is also used for the flywheel as in the embodiments shown in FIGS. 1 to 5. It is not jointly tightened with the main bolt 30, but is fixed with a separate mounting bolt 32. Therefore, the restraining plate 34 does not become loose.

[0017] FIG. 8 shows another embodiment of the present invention, in which the retaining plate 34 is It can be installed by engaging the engagement groove 24c provided in the boss 24 without using the bolt 32. It is attached. In this embodiment, since no mounting bolts are used, the retaining plate 3 may be damaged due to loosening of the bolts. The displacement of 4 is completely eliminated.

[0018]

[Effect of the idea]

According to the present invention, as described above, the second flywheel body is connected to the first flywheel body. The bearing that is rotatably supported on the boss of the eel body is separate from the flywheel bolt. The first flywheel body engages in the engagement groove provided in the mounting bolt or boss of the A restraining plate attached to the boss prevents displacement. This prevents the bearing from being displaced due to loosening of the bearing retainer, as in the case of conventional co-tightening. Therefore, the functionality of the flywheel damper can be reliably maintained. There is.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a flywheel of an engine according to the present invention.

FIG. 2 is an enlarged sectional view of a bearing mounting portion of the flywheel shown in FIG. 1;

FIG. 3 is an enlarged sectional view of a bearing mounting portion of a modification of the flywheel of FIG. 1;

FIG. 4 is an enlarged sectional view of a bearing mounting portion of another modification of the flywheel of FIG. 1;

FIG. 5 is an enlarged front view of the flywheel of FIG. 5;

6 is an enlarged sectional view of a bearing mounting portion of still another modification of the flywheel shown in FIG. 1. FIG.

7 is an enlarged front view of the flywheel of FIG. 6. FIG.

FIG. 8 is an enlarged sectional view of a bearing mounting portion of a flywheel according to another embodiment of the present invention.

[Explanation of symbols]

10 Engine flywheel 12 Crankshaft 14 First flywheel body 16 Damper 18 Second flywheel body 24 Boss 26 Bearing 28 Bearing restraint 30 Flywheel bolt 32 Mounting bolt 34 Holding board

Claims (2)

[Scope of utility model registration request] 1. A first flywheel body having a boss connected to a crankshaft of an engine by a flywheel bolt, and a second flywheel body coupled to the first flywheel body via a damper. The second flywheel body is rotatably supported by the boss of the first flywheel body via a bearing, and the bearing is attached to the engine flywheel body held by a bearing retainer attached to the boss. A flywheel for an engine, characterized in that the bearing retainer comprises a retainer plate attached to the boss of the first flywheel body by a mounting bolt separate from the flywheel bolt. 2. A first flywheel body having a boss connected to a crankshaft of an engine;
The second flywheel body is coupled to the flywheel body via a damper.
a flywheel body, the second flywheel body is rotatably supported by a boss of the first flywheel body via a bearing, and the bearing is held by a bearing retainer attached to the boss. 1. A flywheel for an engine according to claim 1, wherein the bearing retainer is comprised of a retainer plate that is fitted into an engagement groove of a boss of the first flywheel body.