JPS61290236A - Clutch mechanism of car cooler - Google Patents

Abstract

PURPOSE:To omitting attachment of a rotor, by rotatably constructing a magnetic coil. CONSTITUTION:A clutch housing 6 having an armature 5 at an inside thereof is rotatably mounted on a rotation axis 4. A coil clamping plate 8 is fixed at an extream end of the rotation axis 4 so that an electromagnetic coil 7 is positioned at an inside of the armature 5 and confronts with the armature 5 at a prescribed interval. In addition, a power receiving mechanism 9 is attached to an extream end of the rotation axis 4 so that the power receiving mechanism 9 is electrically combined with the magnetic coil 7. The power receiving mechanism 9 is detachably coupled with a separately constructed power supply mechanism 10. With this arrangement, attachment of a rotor is omitted for simplifying construction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch mechanism for an automobile cooler.

SUMMARY OF THE INVENTION An object of the present invention is to provide a clutch mechanism that makes it possible to omit the installation of a rotor, which has been considered indispensable in conventional automobile cooler mechanisms.

Another object of the present invention is to omit the use of a rotor so that when the clutch housing is freely rotating, it is possible to suppress the generation of resonance noise from the parts where the housing and armature are attached. The present invention aims to provide a clutch mechanism for an automobile cooler.

Still another object of the present invention is to provide an effective motor vehicle capable of generating significantly greater torque than conventional coils of the same diameter by allowing the magnetic force of the coil to act directly on the armature. The purpose of the present invention is to provide a clutch mechanism for a cooler.

In the clutch mechanism of a conventional automobile cooler, as shown in FIG. 4, a coil 1 that generates magnetic force is fixed to the main body of the machine, and a gap is provided on the outer surface of the coil 1 to pass the magnetic force of the coil. A rotor 2 with a large number of (elongated holes) 21...21 is installed at predetermined intervals so as to be able to rotate freely, and an armature is placed on the outside of the rotor, which functions as a connecting body for the clutch housing. 3 is magnetically attached. However, these known clutches have the following drawbacks or problems: (1) The rotor 2 must be provided with a large number of long holes 21 for passing the magnetic force. , In addition, in order to effectively pass the magnetic force, it is necessary to make the distance between the long holes 21 as small as possible, so the processing is complicated. ■ When attaching the manufactured rotor 2 to the coil l. In addition, since the rotor 2 must be installed so that all surfaces maintain a constant gap (usually a gap of about 0.3 to 0.5 fl) with respect to the surface of the coil 1, precision is required for the installation. The armature 3, which is magnetically attached to the outer surface of the rotor 2, is magnetized at a position perpendicular to the rotation axis, resulting in poor workability. The friction surface is often not uniform (in this case, depending on the position of the actual friction surface, there is a significant performance variation in the amount of rotational torque, resulting in many variations in quality). It has a structure in which a disc-shaped armature 3 is attached to the inside by being pressed by a leaf spring, and when the magnetic force of the coil 1 acts, the armature 3 is attached to the rotor because the magnetic force is stronger than the deterrent force of the leaf spring. 2, so when the latch housing rotates in a so-called free state with no magnetic force acting on it, the temporary spring that suppresses the armature 3, which rotates as it rotates, generates resonance noise when rotating. The disadvantages are that it causes noise.

The purpose of the present invention is to solve these problems, and the purpose has been completely achieved by completing the invention described below.

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

In the clutch mechanism of the present invention, a clutch housing 6 with an armature 5 attached thereto is rotatably attached to a rotary shaft 4, and an electromagnetic coil 7 is located inside the armature 5 at the tip of the rotary shaft 4. The coils are mounted facing each other at a constant interval, and are characterized in that the plate 8 is fixed. The clutch bousing 6 has a well-known shape in the form of a so-called deep dish, with a peripheral wall standing upright on the periphery of a disc, and its center part is rotatably mounted on the rotating shaft 4 via a bearing 61 or the like. It is attached to the outer periphery of the belt for locking the transmission belt that receives power from the automobile engine (not shown).
A pulley" 62 or a timing pulley 63 is attached to the armature 5. The armature 5 is composed of two half-moon or half-chord pieces as shown in FIG. It is mounted on the inside so that it can slide a little in the direction of the rotating shaft (axis direction). (This sliding stroke is caused by the electromagnetic coil 7.
The gap is approximately equal to the gap between the outer surface of the armature 5 and the inner surface of the armature 5, and is in the range of about 0.2 to 0.5 vr*, preferably a stroke of about 0.3 am). The electromagnetic coil 7 is a coil that is rotated by the rotating shaft 4, and its mounting is formed along the outer periphery of the plate 8 so that the maximum diameter part of the magnetic circuit faces the armature 5. .

Although it is not essential, the surface of the electromagnetic coil 7
It is effective to attach a lining (friction plate) 71 to. Reference numeral 9 denotes a power receiving mechanism with a coil attached to the plate 8, which rotates coaxially with the rotation of the rotating shaft 4. The power receiving mechanism is removably connected to a separately configured power feeding mechanism 10, and the received power is supplied to the electromagnetic coil 7 via a power transmission harness 91. The power feeding mechanism 10 has a so-called coupler structure and is attached to the tip of a flexible NiA conductor 11. The magnetic circuit of the electromagnetic coil 7, which is attached to the outer circumferential edge of the plate 8, is constructed so that the maximum diameter part of the magnetic circuit is located on the outer circumferential surface along the circumferential direction, as shown in FIG. Of course, as illustrated in FIG. 2, the magnetic circuit can be mounted such that the maximum diameter portion thereof faces toward the circumference of the plate 8. In this case, the armature 5 may have a simple disk shape and be magnetically attached to its outer periphery.

The present invention configured as described above operates as follows.

If the clutch is not operating, in this case the tif
The power supply to the f coil 7 has been stopped. Therefore, the electromagnetic coil 7 is not magnetically attached to the armature 5, so the armature 5 remains attracted to the clutch housing 6 and is attached to the rotating shaft 4 together with the clutch housing 6. It just rotates freely around the cooler, and no power is drawn to the cooler.

When the clutch is operating, in this case, power is supplied to the electromagnetic coil 7, so a magnetic force is generated in the electromagnetic coil 7, and the armadure 5 is magnetically attached. When the armature 5 is magnetically attached, the armature 5
and the clutch housing 6 are connected, so the power of the automobile engine transmitted via the transmission belt is transmitted in the order of the flange housing 6 -> armature 5 -> electromagnetic coil 7 - mounting plate 8 - rotating shaft. This will cause the cooler to operate.

The effects of the present invention configured as described above are as follows.

(1) Since the electromagnetic coil 7 is rotated, which is completely different from the conventionally known structure, it is possible to completely omit the attachment of the rotor, which was the most complicated manufacturing process in the past, and the structure is extremely simple. was completed.

(2) Since no rotor is used, the magnetic force of the electromagnetic coil 7 can be directly transmitted to the armature 5. As a result, it is possible to completely eliminate the power loss caused by the gap (air gap) between the electromagnetic coil and the rotor, which occurred in the case of a structure using a conventional rotor, and it is possible to completely eliminate the power loss caused by the gap (air gap) between the electromagnetic coil and the rotor. Even when used, extremely large torque could be obtained. (For example, when using a coil with an outer diameter of 100 mm, the torque that can be obtained conventionally is 3 to 4 kg.
/m, but in the case of the present invention, it was about 5 to 7 kg/m
It was possible to obtain a torque of ) (3) When the armature 5 is not energized, it can be configured to be housed inside the clutch housing 6 by the centrifugal force accompanying rotation and the force of a pushback spring, so the clutch housing does not rotate freely like conventional products. It is possible to prevent the generation of resonance noise caused by the rotational balance of the armature during operation, and is effective in preventing noise.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing an embodiment of the present invention, Fig. 2 is a longitudinal side view showing an example in which the operating position of the electromagnetic coil is changed, and Fig. 3 is a front view showing the combination state of the clutch housing and armature. , FIG. 4 is a schematic longitudinal sectional side view showing a conventional clutch mechanism. 4... Rotating shaft, 5... Armature, 6... Clutch housing, 61... Bearing, 62... ■Boo'IJ
-163...timing pulley, 7...electromagnetic coil,
8. Coil mounting on plate, 9. Power receiving mechanism, 91. Power transmission harness, 10. Power feeding mechanism Patent applicant Tsuneo Shiozawa Figure 1 Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) A clutch housing with an armature attached inside is rotatably attached to a rotating shaft, and near the tip of the rotating shaft, an electromagnetic coil attached to the outer periphery is located inside the armature and is fixed to the rotating shaft. Coil mounting plates facing each other with an interval of A clutch mechanism for an automobile cooler that electrically connects the two. (2) The clutch mechanism for an automobile cooler according to claim 1, wherein the armature is attached to the inside of the clutch housing so as to be able to move slightly in the direction of the rotating shaft (in the axial direction). (3) The clutch mechanism for an automobile cooler according to claim 1, wherein the electromagnetic coil and the armature are combined so as to face each other at the maximum diameter portion of the magnetic circuit of the electromagnetic coil.