KR200343088Y1 - Clutch gear of synchronous motor - Google Patents

Abstract

This design prevents wear of the lower gear because the metal ring is made of the same material as the lower gear, and there is no gap formed between each ring member, so power transmission to the upper gear is desired, so that the operating state of the synchronous motor can be optimally maintained. To provide the clutch gear of the synchronous motor.

The clutch gear of the synchronous motor includes a lower gear 40, a ring 50 and an upper gear 60, the ring being formed of two ring members 51 and 52, each of which is a lower gear. It is formed of the same material as the material of 40, the first end portion (51a, 52a) is formed at one end of each ring member (51, 52) and the second end portion (51b, 52b) at the other end ) Is formed in a '-' shape, and the first end portions 51a and 52a and the second end portions 51b and 52b of the respective ring members are brought into close contact with each other to form an upper gear 60. 62 and 63 are configured to be inserted into the fixing grooves, respectively.

Description

Clutch gear of synchronous motor

The present invention relates to a clutch gear of a synchronous motor, and more particularly, to a clutch gear of a synchronous motor capable of minimizing wear of a clutch lower gear by a metal ring and preventing a flow failure of the metal ring.

In general, most homes are equipped with a washing machine so that a large amount of various laundry can be washed quickly and easily. Such a general washing machine basically has a water tank fixedly installed in an outer case of the washing machine, and at a predetermined interval inside the water tank. The water tank is fixedly installed so as to be spaced apart from each other and is rotatable at a high speed, and a pulsator is rotatably housed in the lower part of the washing tank.

Referring to the operation of the washing machine schematically, when the washing water is first supplied to the washing tank, the washing water is filled not only in the washing tank, the reservoir tank, between the washing tank and the reservoir tank, but also in the space between the lower portion of the washing tank and the reservoir tank. In the subsequent washing operation, the pulsator rotates to the left and right, and by rotating the pulsator, the back water is generated in the washing tank, and the washing is performed. At the same time, dehydration is performed, and the dewatered wash water is discharged to the reservoir through a hole formed in the washing tank, after which the washing water is drained to the outside through a drain hole formed at the bottom of the reservoir to perform washing. will be.

Such a washing machine is mounted on one side of the driving device to operate the clutch of the driving device, thereby allowing the driving device to selectively perform washing and dehydration as described above, or to open and close the flow path of the drain valve applied to the drainage device. A synchronous motor is provided to perform the function.

As shown in FIG. 1, the synchronous motor has a locking jaw (4a) 4a 'and a small gear 4b on the upper surface of the central shaft 3, which is placed upward from the inner bottom of the housing of the synchronous motor driving unit 1, as shown in FIG. ) Is integrally molded with a magnet (4) rotatably inserted, the drive bobbin (5) is seated around the housing field piece, the guide (7) for protecting the bobbin terminals (6, 6 ') is integral Are combined. The base plate member 8 into which the plurality of gear shafts 8a, 8b, 8c and 8d and the cylindrical recessed groove 9 are inserted is press-fitted at almost the same height as the upper end of the magnet 4.

Between the base plate member 8 in the housing part 2, the field pieces bent up and down at regular intervals are engaged with each other, and the first gear shaft 8a has a clutch 10 having a locking piece 10a and A rounded inclination around the edge of the surface part about 1 ° inward and a circular shape having one inclination angle of about 41 ° and the other inclination angle of about 30 ° lower than the stepped portion with a predetermined interval inward from the step. A pair is provided between the clutch lower gear 11 and the inner side of the stepped portion 11a and the outer side of the uneven portion 11b having the uneven portion 11b and a supporting rod 11c placed at the same height as the stepped portion 11a. The metal rings 12 and 12 ′ of the metal ring 12 and 12 ′ are fixed to be smoothly moved, and the support rod 11c has one side inclination angle of about 41 ° and the other side inclination of about 20 °. The clutch upper gear 13 having the uneven portion 13b supports the clutch lower gear. The supporting rod 11c is held by the spring 14 seated outward and is rotatably inserted into the above first gear shaft 8a.

In this case, in order to enable the driving unit 1 to always rotate counterclockwise at the initial start, the magnet 4 of the driving unit rotates clockwise momentarily instead of rotating counterclockwise. ) And the driving magnet 4 rotates in the opposite direction immediately after the rotation is stopped by the locking of the locking jaw 4a and the locking piece 10a of the clutch 10. At this time, the clutch lower gear 11 which meshes with the gear 4b of the magnet 4 is made to rotate together. In addition, the driving force of the synchronous motor is transmitted or released to the clutch upper gear 13 in accordance with the movement of the clutch upper gear 13 due to the electrical action of the solenoid bobbin 25 and the bar member 26. have. That is, normally, the uneven | corrugated part 11b of the clutch lower gear 11 and the clutch upper gear uneven part 13b are isolate | separated from each other by the spring 14, and the rotation force of the clutch lower gear 11 is a clutch upper gear 13 Is not delivered).

However, the bar member 26 is operated to move downward when the clutch upper gear 13 is pressed so that the uneven parts 11b and 13b of the both side gears 11 and 13 are engaged with each other. The rotational force is transmitted to the clutch upper gear 13 as it is. The separation of the clutch upper gear 13, the protruding piece 13a, and the metal rings 12 and 12 'by rotational friction by the centrifugal force is performed here.

In addition, since the uneven parts 11b and 13b of the upper and lower gears 11 and 13 are formed symmetrically with each other at predetermined angles, smooth engagement and separation of the smooth gears 11 and 13 is smooth. It is supposed to be smooth and smooth.

A connector gear 15 is inserted into the second gear shaft 8b so that the large gear portion of the connector gear 12 is engaged with the clutch upper gear 13 and the small gear portion is another third gear shaft 8c. Is engaged with the large gear of the middle gear 16 inserted into the gear, and the small gear of the middle gear is engaged with the large gear of the idle gear 17 inserted into the fourth gear 8d of another axis. The small gear of the gear 17 is arranged such that the main gear 18 having the semicircular shaft 18a whose lower end is rotatably held in the circular recessed groove 9 is interlocked and decelerated.

Next, at one side of the lower case member 19 through which the shaft rod 18a of the main gear 18 is inserted, the lead wire 21 and the elastic force are formed on the circuit board 20 on which a circuit for blocking surge voltage due to opening and closing of the switch is formed. The switch terminals 23A and 23B having the inner side and the collar member 24 having the semicircular hole of the dimension slightly larger than the peripheral dimension are inserted in the semicircular shaft rod 18a of the main gear 18. The switch terminal 23B abuts against the collar member is turned on / off by the recess 24a of the collar member 24 as the main gear 18 rotates.

As the power is turned off, the magnetic field of the solenoid bobbin 25 disappears, and the bar member 26 is lifted up by the force of the spring 14, and the gears 11 and 13 engaged with each other are separated, and the power transmission is cut off. .

When the current flows in the bobbin 25 coil, the bar member 26 is attracted by the magnetic field, and the bar member is pushed downward while pressing the clutch upper gear 13 that is in contact with each other. Done.

When the power is cut off by a timer set at a certain time, the bar member 26 falls due to the disappearance of the magnetic field, and the clutch upper gear 13 and the bar member 26 are pushed upward by the repulsive force by the spring 14. Power transmission is interrupted while the bite of both gears 11 and 13 is released.

Next, a lever 30 having one end of the operating rope 29 wound around the upper end of the shaft 18a of the main gear 18 through which one hole of the upper case 28 covering the lower case member 19 is inserted. It is fitted. In addition, the stop jaw 28a is formed at one side near the large hole of the upper case 28, and the stop piece 30a of the lever 30 is formed at the stop jaw at the lower end side of the operating rope 29. The lever 30 is configured to return to its original position by the tension of the connected spring 31.

However, it has been shown that some problems are caused during operation of the conventional synchronous motor as described above. That is, while the metal rings 12 and 12 'serving as the balancer of the clutch gear are formed of a metal such as brass, the clutch lower gear 11 to which the metal rings 12 and 12' are in contact is made of synthetic resin such as plastic. As a result, the wear of the clutch lower gear by the metal ring is too easy and excessively generated.

In addition, when the lower gear is excessively worn, the protruding pieces 13a and 13a 'of the upper gear 13 are higher than the metal rings 12 and 12', so that the protruding pieces 13a and 13a 'are operated when the synchronous motor is operated. ) Ascends the metal rings 12 and 12 ', making transmission of power impossible. In addition, the gap between each metal ring 12 and 12' is excessive so that each of these metal rings At the same time, there was a problem that can not perform the correct operation due to the rotation does not work.

Therefore, the present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to change the material of the ring to prevent wear of the surface of the lower gear and to eliminate the gap between the rings, thereby ensuring the smooth flow and operation of the ring. It is to provide a clutch gear of the synchronous motor to achieve.

Figure 1a is an exploded perspective view showing the structure of a general synchronous motor.

Figure 1b is a plan view showing a contact state between the clutch lower gear and the metal ring of the synchronous motor of Figure 1;

Figure 2 is a perspective view showing the clutch gear of the synchronous motor according to the present invention.

Figure 3 is a plan view showing a contact state between the lower gear and the ring of the clutch gear according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

40: Lower Gear 41: Base

42: stepped portion 43: fixed shaft

44: uneven portion 50: ring

51: first ring member 52: second ring member

51a, 52a: first end 51b, 52b: second end

60: upper gear

These objectives are geared around the synchronous motor to enable the drive of the washing machine to selectively perform washing and dehydration or to open and close the flow path of the drain valve applied to the drainage device. And a lower gear having a stepped portion protruding around the upper surface, a lower gear having an uneven portion formed around the fixed shaft, a ring disposed between the stepped portion and the uneven portion of the lower gear, and reciprocally movable by a spring with respect to the lowered portion. In a clutch gear of a synchronous motor including an upper gear that is integrally formed with two protruding pieces opposed to each other at a lower portion, each ring member of the ring is formed of the same material as the material of the lower gear, and each ring A first end is formed at one end of the member, and the other end of one ring piece of each of the ring members is provided at the other end. A second end for forming each of the fixing grooves is formed together with the formed first end, and is inserted into the fixing grooves formed in the first and second ends of the respective rings. It can be achieved by the clutch gear of the synchronous motor.

Hereinafter, a preferred embodiment of a clutch gear of a synchronous motor according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing in detail the clutch gear of the synchronous motor according to the present invention, Figure 3 is a plan view showing a contact state between the lower gear and the ring of the clutch gear according to the present invention.

2 and 3, the clutch gear of the synchronous motor according to the present invention basically includes a lower gear 40, a metal ring 50, and an upper gear 60. Here, the lower gear 40 has a base 41 having gears formed therein, and a stepped portion 42 protrudes upward from the periphery of the upper surface of the base 41, and at the center of the base 41. A fixed shaft 43 rotatably inserted into the first tooth shaft of the base plate member is protruded integrally, and an uneven portion 44 is formed around the fixed shaft 52. In addition, the ring 50 is comprised by the two ring members 51 and 52 arrange | positioned between the step part 42 and the uneven part 44 of the base 51 of the lower gear 40, respectively. In addition, the upper gear 60 includes a body 61 having gears formed around the periphery, and each of the ring members 51 and 52 of the ring 50 is opposed to each other around the periphery of the body 61. Protrusions 62 and 63 are inserted between both ends of the lower end of the lower gear 40. The protrusions 62 and 63 are formed around the lower end of the lower end of the lower gear 40. Of course, the upper gear 60 is interconnected by a spring 65 to reciprocate up and down with respect to the lower gear 40.

In particular, end portions are formed at both ends of each of the ring members 51 and 52 of the ring 50 according to the present invention. That is, the first end 51a is formed at one end of the first ring member 51 of the ring 50, and the second end 51b of the 'a' shape is formed at the other end. Is formed. In addition, correspondingly, one end of the second ring member 52 has a 'b' shaped first end 52a corresponding to the first end 51a formed at one end of the first ring member 51 described above. ) Is formed, and the other end of the second ring member 52 is formed with a 'b' shaped second end 52b corresponding to the second end 51b formed at the other end of the first ring member.

In addition, each of these ring members 51 and 52 is preferably formed of a material such as synthetic resin or plastic, not metal, and most preferably, the same as the material of the lower gear.

On the other hand, as the respective ring members 51 and 52 are formed as described above, when they are arranged in the lower member 40, the ends of the respective ring members are in contact with each other, as well as each of the upper gears 60. The fixing groove is formed is inserted into the protrusion. That is, the first end portion 51a formed at one end of the first ring member 51 and the first end portion 52a formed at one end of the second ring member 52 together form one of the upper gears 60. A fixing groove into which the protruding piece 62 is inserted is formed and a second end portion 51b formed at the other end of the second ring member 52 and a second end portion 52b formed at the other end of the second ring member 52. Is formed with a fixing groove into which the other protruding piece 63 of the upper gear 60 is inserted.

According to the assembly method and the operation mode of the clutch gear of the synchronous motor according to the present invention configured as described above, first the first ring between the stepped portion 42 and the uneven portion 44 of the base 41 of the lower gear 40 The member 51 and the second ring member 52 are disposed. As described above, when each ring member is disposed, as described above, the first end portion 51a of the first ring member 51 is in contact with the first end portion 52a of the second ring member 52 and at the same time, one fixing groove. Is formed, and at the same time, the second end portion 51b formed at the other end of the first ring member 51 is in contact with the second end portion 52b of the second ring member 52 and at the same time, another fixing groove is formed. do. Thereafter, the operator inserts the upper member 60 into the lower member 40 by inserting the two protruding pieces 62 and 63 of the upper member 60 into the respective fixing grooves formed by the ends of the respective ring members. By mounting, the assembly of the clutch gear is completed.

In the assembled state, the synchronous motor is operated so that the lower gear 40 and the upper gear 60 are rotated independently of each other or are integrally rotated between the ring members 51 and 52 when they are integrally rotated. No gap is formed so that each ring member rotates at the same time, so that the entire ring 50 is always in place so that the synchronous motor itself always maintains a normal operating state. In addition, the ring 50 is made of synthetic resin. Or because it is formed of plastic to minimize the wear of the base to minimize the malfunction of the ring.

Accordingly, the inability of the synchronous motor due to pinching or inflow of the metal ring due to premature wear of the base of the lower gear is prevented.

As described above, according to the clutch gear of the synchronous motor according to the present invention, since the ring is formed of the same material as the lower gear, wear of the lower gear is prevented, and a gap is not formed between each ring member. The power transmission is smooth, so that the operating state of the synchronous motor is optimally maintained, thereby improving productivity and reliability.

In the above, the preferred embodiment of the present invention has been described in detail, but it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

Claims (2)

A lower gear 40 having a stepped portion 42 formed around the top surface and protruding around the upper surface, and an uneven portion 44 formed around the fixed shaft 43, and a stage of the lower gear 40. A ring 50 disposed between the jaw portion 42 and the uneven portion 44 and formed of two ring members, and two protrusions reciprocally reciprocated by a spring with respect to the lower gear 40 and opposed to each other at a lower portion thereof. In the clutch gear of a synchronous motor including the upper gear 60 in which the pieces 62 and 63 are integrally formed, One end of the first ring member 51 of each ring member of the ring 50 is formed with a first end (51a) is formed in the 'b' shape and the other end of the 'b' shaped second end (51b) ) Is formed, One protruding piece 62 of the upper member 60 is inserted into one end of the second ring member 52 together with the first end 51a formed at one end of the first ring member 51. A first end portion 52a having a '-' shape for forming one fixing groove is formed, and at the other end thereof, together with the second end portion 51b formed at the other end portion of the first ring member 51, the upper member ( Clutch gear of the synchronous motor, characterized in that the second end portion (52b) of the 'b' shape for forming another fixing groove into which the other protruding piece (63) of the 60 is inserted. 2. The clutch gear of a synchronous motor according to claim 1, wherein each ring member (51, 52) of the ring (50) is made of the same material as that of the lower gear.