JPH1172123A - Jaw clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jaw clutch, used in a washing machine to be made able to be mounted, wherein without using a bolt, the jaw clutch can be conveniently assembled to be smoothly operated, and with retraction possible in an axial line direction from a de-watering barrel of the washing machine in the case of disassembly, a defective point and inferior point of assembly/ disassembly accompanying a transmitting device can be overcome. SOLUTION: This device has a drive sleeve uniformly provided with at least two arrow head-shaped jaws on an inner side cylinder surface and a driven sleeve 3 provided with at least two tooth grooves 9 respectively corresponding to this arrow head-shaped jaw on an outer side cylinder surface and with a shape in both side parts of the tooth groove 9 almost equal to a shape of this jaw on the drive sleeve 1. A maximum width of the arrow head-shaped jaw on the drive sleeve 1 is formed a little smaller than a minimum peripheral space of the tooth groove 9 on the driven sleeve 3, and this jaw is inserted in the tooth groove 9 on the driven sleeve 3, to be made able to engage therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

FIELD OF THE INVENTION The present invention relates to transmissions, and more particularly to jaw clutches used in washing machines.

[0002]

2. Description of the Related Art

BACKGROUND OF THE INVENTION In general, the known transmission of a dewatering barrel of a conventional washing machine usually consists of a bolt and a shaft coupling directly fixed to the output shaft of the motor. Although this type of connection is very rigid, it is very inconvenient during disassembly and maintenance. If the laundry unexpectedly falls into the space between the dewatering barrel and the housing during dehydration, it is difficult to remove the fallen laundry from the space and damage the power mechanism. Will be done.

SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a convenient assembly without the use of bolts, to operate smoothly, and to be able to retract axially from the dewatering barrel of the washing machine upon disassembly. Accordingly, it is an object of the present invention to provide a mountable jaw clutch for use in a washing machine that overcomes the above-mentioned disadvantages and disadvantages associated with the previously known transmissions of conventional washing machines.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a base, a base, two outwardly angled surfaces and two inwardly angled surfaces are rigidly fixed on a drive shaft. A drive sleeve having at least two arrowhead-shaped jaws having a diamond-shaped portion on the inner / outer cylindrical surface, and at least two tooth grooves corresponding to each of the arrowhead-shaped jaws having an outer / inner cylinder. A driven sleeve provided on the surface and having the shape of both sides of the tooth space substantially identical to the shape of the jaw on the drive shaft, wherein the maximum of the arrowhead jaw on the drive shaft is A peripheral width is made slightly smaller than a minimum peripheral space of the tooth space on the driven sleeve, and the jaw is insertable into the tooth space on the driven sleeve and is engaged with the driven sleeve. Or retreats axially from the tooth space and Jaw clutch, characterized in that it is disengaged from the sleeve is provided.

[0005] The tooth space on the driven sleeve extends outwardly and forms a horn formed by two adjacent outwardly angled surfaces and two adjacently angled inner sides. And a dovetail (dove-tailed) tooth space composed of defined surfaces. One of the inside corners of the jaw on the drive sleeve engages a corresponding one of the inside corners of the dovetail tooth space on the driven sleeve.

The number of the jaws on the drive sleeve is two
８8.

[0007] One of the tooth spaces on the driven sleeve is formed from adjacent sides of two adjacent jaws having substantially the same shape as the shape of the jaws on the drive sleeve. The tooth space corresponds to the arrowhead jaw on the drive sleeve.

[0008] The number of jaws on the driven sleeve can be an integer multiple of the number of jaws on the driven sleeve.

[0009] The drive sleeve can be integrated with the outer dewatering barrel of the washing machine, and the arrowhead jaws are uniformly provided on the inner cylindrical surface of the drive sleeve. It can be integrated with the inner dewatering barrel of the washing machine, and the tooth groove is evenly provided on the outer cylindrical surface of the driven sleeve.

The arrowhead jaw is provided evenly on the outer cylindrical surface of the drive sleeve, and the driven sleeve can be integrated with a dehydration barrel of a washing machine by a flange. The tooth spaces are evenly provided on the inner cylindrical surface of the.

A projection can be provided at the center of the bottom of the drive sleeve, and a central recess is provided on the driven sleeve so that the projection can be accommodated.

A projection can be provided at the center of the bottom of the driven sleeve, and a central recess is provided on the driving sleeve so that the projection can be accommodated.

The cross section of the projection and the central recess is circular or polygonal.

The maximum width of the arrowhead jaw on the drive sleeve may be 0.5 to 6 mm smaller than the minimum peripheral space of the tooth space on the driven sleeve.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A jaw clutch according to a first preferred embodiment of the present invention will be described with reference to FIGS.

The jaw clutch according to the first preferred embodiment of the present invention includes a driven male sleeve 3 and a driving female sleeve 1 which is firmly fixed on a driving shaft.

On the inner cylindrical surface of the driving scalpel sleeve 1, three arrowhead jaws 4 are evenly provided. The arrowhead jaws have a base portion and a rhombus portion. It has two outwardly angled surfaces 12 and two inwardly angled surfaces 11.

The driven male sleeve 3 is provided with three or more tooth grooves 9 on the outer cylindrical surface thereof, and the tooth grooves 9 respectively correspond to the arrowhead jaws 4 formed of ribs. The shape of the side portion of the tooth space 9 is the same as that of the drive sleeve 1 described above.
The shape is substantially the same as that of the upper arrowhead jaw 4. Each of the tooth spaces 9 can be formed from adjacent sides of two adjacent jaws 5, the shape of which is substantially identical to the shape of the arrowhead jaw 4 on the drive sleeve 1. The tooth space 9 corresponds to the arrowhead jaw 4.
The maximum width of the arrowhead jaw 4 on the drive female sleeve 1 is slightly smaller than the minimum peripheral space of the tooth space 9 on the driven male sleeve 3 by, for example, 0.5 to 6 mm. 1 is inserted into the tooth space 9 and engages the driven sleeve 3 or the tooth space 9
From the driven sleeve 3 in the axial direction.

The tooth space 9 on the driven male sleeve 3
Has a ridge formed by two adjacent outwardly angled surfaces 12 extending outwardly and a dovetail flute formed by two adjacent inwardly angled surfaces 11. One of the inner angled surfaces 11 of the jaws 4 on the drive sleeve 1 is associated with a corresponding inner angled surface 11 of one of the dovetail tooth spaces on the driven sleeve 3. Combine.

The number of the jaws 4 on the drive sleeve is two to eight. The jaw 5 on the driven sleeve 3
Is an integral multiple of the number of the jaws 4 on the drive sleeve 1, for example, 1 to 8 times.

A central projection 1 is provided at the bottom of the drive sleeve 1.
3 is provided, and a central concave portion 10 for accommodating the central protrusion 13 is provided on the driven sleeve 3. The cross-sectional shapes of the center projection 13 and the center recess 10 are as follows:
Each has a circular or regular polygonal shape and is adapted to engage with each other to form a center positioning mechanism.

A plurality of screw holes 8 are provided in the upper flange of the male sleeve 3. A driven member (for example, an inner dewatering barrel of a washing machine) is connected to the bolt 6 through the screw hole 8.
At the male sleeve. When the male sleeve 3 and the female sleeve 1 are engaged, the drive female sleeve 1
The upper arrowhead jaw 4 above can be inserted into the tooth space 9 so that two inactive inner angled surfaces 11 and 11 are provided.
The width between them (as shown in FIG. 5) is about 2 millimeters. This width is also the difference between the maximum width of the arrowhead jaw 4 on the driving female sleeve 1 and the minimum peripheral space of the tooth space 9 on the driven male sleeve 3.

The jaw clutch of the present invention can be used in a washing machine having a double dewatering barrel. That is, the female sleeve 1 of the jaw clutch according to the first preferred embodiment of the present invention is provided in a dehydration barrel of a conventional washing machine,
The male sleeve 3 of the jaw clutch is provided on the inner dewatering barrel of the washing machine.

Further, the jaw clutch of the present invention also
It can also be used for a centrifugal dehydrator and the like.

A jaw clutch according to a second preferred embodiment of the present invention will be described with reference to FIGS.

The jaw clutch according to the second preferred embodiment of the present invention includes a male sleeve 3 having a jaw 4 and a female sleeve 1 having a jaw 5.

The male sleeve 3 is a drive member firmly fixed on a drive shaft. The male sleeve 3 has a substantially cylindrical shape, and at least two or more (for example, three in the drawing) arrowhead jaws 5 are provided on the outer cylindrical surface of the sleeve.
Are equally provided, the arrowhead jaw having two outwardly angled surfaces 12 and two inwardly angled surfaces 11. Three tooth spaces 9 are respectively formed by the adjacent sides of two adjacent jaws 5, each tooth space extending outwardly and a corner constituted by two adjacent outer angled surfaces 12. And a dovetail tooth space defined by two adjacent inwardly angled elevens. As shown in the drawing, the male sleeve 3 having three jaws 5 and three tooth grooves 9 is mounted on a driven member (for example, a dehydration barrel 2 of a washing machine in this embodiment). It can be inserted into the female sleeve 1. On the inner cylindrical surface of the driven female sleeve 1,
The three arrowhead jaws 4 corresponding to the tooth spaces 9 on the male sleeve 3 are equally provided. The arrowhead jaw 4 with the outwardly angled surface 12 ′ disposed on the scalpel sleeve 1 is inserted into the tooth space 9 through the smallest width opening of the tooth space 9. When enabled, the jaws 5 of the male sleeve 3 'engage the arrowhead jaws 4 of the female sleeve 1 to complete the assembly of the jaw clutch. The arrowhead jaw 4 of the female sleeve 1 is also connected to the toothspace 9 via an opening having the minimum width of the toothspace 9.
And the female sleeve 1 and the male sleeve 3 of the jaw clutch can be disassembled from each other.

A central recess 10 is formed on the top surface of the male sleeve 3.
Are provided to accommodate a central projection 13 provided on the inner top surface of the female sleeve 1. The cross sections of the center projection 13 and the center recess 10 each have a circular or regular polygonal shape, and form a center positioning mechanism by engaging with each other.

As shown in FIG. 11, the jaw clutch according to the second preferred embodiment of the present invention can be used in a dewatering barrel of a washing machine. The washing machine has a motor 14 mounted in the housing of the washing machine and supported by a damping spring 15. The male sleeve 3 of the jaw clutch according to the second preferred embodiment of the present invention is fixed to the end of the output shaft of the motor 14. The arrowhead jaw 5 having substantially the same shape as the arrowhead jaw 4 on the female sleeve 1 is provided on the outer cylindrical surface of the female sleeve 3. The tooth space 9 formed by the adjacent jaws 5 on the male sleeve 3 ′
Each engages with the arrowhead jaw 4 on the female sleeve 1. A plurality of screw holes 8 are provided in the flange of the female sleeve 1. The female sleeve 1 is fixed to the bottom of the dewatering barrel 2 of the washing machine with screws or bolts through the holes 8.

When the jaw clutch according to the second preferred embodiment of the present invention is used in the dewatering barrel 2 of a washing machine,
Disassembly and assembly for maintenance are very convenient. That is,
The dewatering barrel 2 of the washing machine can be removed from the washing machine without using a tool integrally with the female sleeve 1. During dewatering, the female sleeve 1 fixed to the bottom of the dewatering barrel 2 engages with the male sleeve 3 so that the dewatering operation is performed smoothly.

[0031]

The jaw clutch according to the present invention has the following effects.

1. Since the drive sleeve has an arrowhead jaw that engages the driven sleeve with dovetail tooth space, the construction is very simple and the disassembly and assembly is very convenient. High torque transmission bearing capacity.

2. The dewatering barrel of the washing machine is automatically centered because a radial force is generated when the corresponding working surfaces interact.

3. When the jaw is inserted into the tooth space, the outer surface of the angular portion extending outwardly of the tooth space functions as a guide surface, and the outer surface of the jaw forms the tooth space. And slide into it to form an insertion positioning mechanism.

4. The jaw clutch is driven by a center positioning mechanism formed by the center recess 10 and the center projection 13.
It is possible to have a heavy positioning mechanism. During operation,
The driven sleeve can be engaged with the drive sleeve and the positioning of the engagement is very precise. Further, the jaw clutch of the present invention has a long life since the jaws can withstand relatively low impact forces.

While the invention has been illustrated and described with reference to preferred embodiments, it will be appreciated that various changes and modifications can be made without departing from the scope of the invention as defined in the appended claims. It is obvious to the trader.

[Brief description of the drawings]

The above and other objects, features and advantages of the present invention can be understood more easily by reading the detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a schematic front view of a male sleeve of a jaw clutch according to a first preferred embodiment of the present invention.

FIG. 2 is a schematic bottom view of the male sleeve shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a female sleeve of a jaw clutch according to a first preferred embodiment of the present invention.

FIG. 4 is a schematic bottom view of the female sleeve shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of a jaw clutch according to a first preferred embodiment of the present invention installed in a double dewatering barrel of a washing machine.

FIG. 6 is a schematic front view of a male sleeve of a jaw clutch according to a second preferred embodiment of the present invention.

FIG. 7 is a schematic bottom view of the male sleeve shown in FIG. 6;

FIG. 8 is a schematic bottom view of a female sleeve of a jaw clutch according to a second preferred embodiment of the present invention.

FIG. 9 is a schematic sectional view of the female sleeve shown in FIG. 8;

FIG. 10 is a schematic cross-sectional view of a jaw clutch according to a second preferred embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view of a jaw clutch according to a second preferred embodiment of the present invention mounted on a double dewatering barrel of a washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Driving female sleeve 2 Dehydration barrel 3, 3' Driven male sleeve 4 Arrowhead jaw 5 Adjacent jaw 9 Tooth groove 10 Central recessed part 11, 11 'Inner corner surface 12, 12' Outer corner The surface that formed

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor ▲ Roh Jinha No. 1 Kayoru, Qingdao, Shandong Province, People's Republic of China

Claims (11)

[Claims] 1. At least two rigidly fixed on a drive shaft and having a base portion and a rhombus portion having two outwardly angled surfaces and two inwardly angled surfaces.
A drive sleeve in which two arrowhead jaws are evenly provided on the inner / outer cylindrical surface; and at least two tooth grooves corresponding to each of the arrowhead jaws are provided on the outer / inner cylindrical surface; A driven sleeve having a shape substantially the same as the shape of the jaw on the drive shaft, the maximum peripheral width of the arrowhead jaw on the drive shaft being the same as the shape of the jaw on the drive shaft. The jaw is inserted into the tooth space on the driven sleeve to be able to engage with the driven sleeve, or slightly smaller than the minimum peripheral space of the tooth space, or in the axial direction from the tooth space. A jaw clutch, wherein the jaw clutch is capable of retreating and being detachable from the driven sleeve. 2. The tooth space on the driven sleeve extends outwardly and comprises a horn formed by two adjacent outwardly angled surfaces and two adjacent inwardly angled surfaces. And a dovetail (dove-tailed) tooth groove composed of a surface forming a dovetail, wherein one of the angled surfaces inside the jaw on the drive sleeve is one of the dovetail teeth on the driven sleeve. The jaw clutch of claim 1, wherein said jaw clutch engages a corresponding inner angled surface of one of said grooves. 3. The jaw clutch according to claim 1, wherein the number of the jaws on the drive sleeve is two to eight. 4. One of the tooth spaces on the driven sleeve is formed from adjacent sides of two adjacent jaws having substantially the same shape as the shape of the jaws on the drive sleeve. 3. The tooth groove according to claim 1, wherein said tooth space corresponds to said arrowhead jaw on said drive sleeve.
The jaw clutch according to the item. 5. The jaw clutch according to claim 4, wherein the number of the jaws on the driven sleeve is an integral multiple of the number of the jaws on the drive sleeve. 6. The drive sleeve may be integrated with an outer dewatering barrel of the washing machine, and the arrowhead-shaped jaws are evenly provided on an inner cylindrical surface of the drive sleeve. 2. The sleeve according to claim 1, wherein the sleeve can be integrated with the inner dewatering barrel of the washing machine, and the tooth space is evenly provided on the outer cylindrical surface of the driven sleeve. Joe clutch. 7. The arrowhead jaw is evenly provided on an outer cylindrical surface of the drive sleeve, the driven sleeve can be integrated with a dehydration barrel of a washing machine by a flange, and The jaw clutch according to claim 1, wherein the tooth grooves are evenly provided on an inner cylindrical surface of the driven sleeve. 8. The driving sleeve according to claim 1, wherein a projection is provided at the center of the bottom of the driving sleeve, and a central recess is provided on the driven sleeve to accommodate the projection. Joe's clutch. 9. The driving sleeve according to claim 1, wherein a projection is provided at the center of the bottom of the driven sleeve, and a central recess is provided on the driving sleeve to accommodate the projection. Joe's clutch. 10. The maximum width of the arrowhead jaw on the drive sleeve is 0.5 to 6 mm smaller than the minimum peripheral space of the tooth space on the driven sleeve. The jaw clutch according to the item. 11. The cross section of the projection and the upper central recess is circular or polygonal.
The jaw clutch according to the item.