KR20040046957A - fixing pin assembling structure of clutch for washer - Google Patents

Abstract

PURPOSE: A combining structure of a fixing pin in a clutch for a washing machine is provided to increase the yield rate, to reduce the production cost by reducing a number of components and simplifying the combining process and to improve the operating efficiency of a clutch lever by reducing the clearance between a groove portion and the fixing pin. CONSTITUTION: A through-hole(127) is formed in the one side of a clutch housing. A flange(143) is formed in a fixing pin(140) to prevent the over insertion. The fixing pin is combined by riveting after inserting into the through-hole. Thereby, the combining process is simple and the fixing pin is stuck to a groove portion to reduce the clearance.

Description

Fixing pin assembling structure of clutch for washer}

The present invention relates to a clutch mounting structure of a washing machine, and more particularly, to improve the assembly structure of the fixing pin coupled to the clutch lever fixed to the clutch housing to shift the clutch for the washing machine to shorten the work process to reduce the material cost It relates to a fixing pin fastening structure of the clutch for a washing machine that can reduce the production cost.

1 is a cross-sectional view showing a washing machine according to the prior art, Figure 2 is an enlarged cross-sectional view of the clutch of the washing machine according to the prior art.

In the conventional washing machine, as shown in FIGS. 1 and 2, the cabinet 10, which forms an exterior, and the plurality of hook members 12 are fixed as if they are suspended inside the cabinet 10, and at the same time, the washing water is fixed. The outer tank 20 accommodated, the drain hose 26 and the drain valve 28 installed in the lower portion of the outer tank 20 to discharge the wash water in the outer tank 20, the interior of the outer tank 20 An inner tub 22 rotatably installed in the laundry tank, laundry blades 24 rotatably installed on the bottom surface of the inner tub 22 to form a rotating water stream in the wash water, and a lower portion of the outer tub 20. The motor 30 is installed and driven on one side, and the clutch 40 is connected to the motor 30 to selectively rotate the inner tank 22 and the washing blade 24.

The clutch 40 is provided with a clutch pulley 42 at an end thereof, and a motor pulley 32 is installed at a rotation shaft of the motor 30, so that the clutch pulley 42 and the motor pulley 32 are belts 35. It is connected as) to transfer the driving force of the motor 30 to the inner tank 22 and the washing blade 24.

That is, the clutch 40 has a clutch housing 41 composed of an upper clutch housing 41 a and a lower clutch housing 41 b mounted on the lower side of the outer tub 20, while an end portion is formed inside the clutch housing 41. A gear shaft 44 coupled to the clutch pulley 42 is disposed on the washing shaft 46, and the washing shaft 46 connected to the washing blade 24 is fixed to the upper portion of the gear shaft 44. One side of the brake drum 49 is provided with a built-in gear unit 48 for reducing or switching power, the upper side of the brake drum 49, the dehydration shaft 45 connected to the inner tank 22 four It is fixed, the spring block 52 and the clutch boss 52 is fixed to the lower end of the gear shaft 44.

One side of the clutch housing 41 is operated by a solenoid (not shown) for operating the drain valve 28 to brake the brake drum 49 and return by the first spring 55 ( 54 is connected and installed by the hinge 56, the clutch lever 57 and the second spring 59 which is interlocked when the brake lever 54 is operated to be bitten by the clutch boss 52 is the fixing pin 60 Is coupled to the clutch housing 41.

3 is a plan view showing an enlarged fixing pin according to the prior art, and FIG. 4 is a cross-sectional view of the AA line of FIG. 3, wherein the clutch housing 41 has a through hole 47 formed at one side thereof. As shown in FIGS. 3 and 4, the fixing pin 60 has a threaded thread 62 formed at one end thereof and is inserted into the through hole 47. The one side of the fixing pin 60 has the through hole. A flange 63 is formed in the hole 47 so as not to be overinserted, and a snap ring 58 is inserted into the other end to prevent the clutch lever 57 and the second spring 59 from being inserted. Groove 66 is formed.

Here, the through hole 47 is formed in a rectangular cross section, and the front of the flange 63, the rectangular portion corresponding to the mall through hole 47 within the range not exceeding the thickness of the clutch housing 41. 65 is formed so that the fixing pin 60 does not rebound after being fastened to the clutch housing 41.

The fixing pin 60 configured as described above is inserted into the through hole 47 of the housing and then fastened as a bolt. At this time, when the bolt is tightened to increase the clamping force and at the same time the bolt washer is larger than the size of the through hole 47 so as not to fall into the through hole 47 and the spring washer to prevent loosening during vibration (69) ) Is preferably further included.

However, the fixing pin fastening structure of the clutch for a washing machine according to the prior art requires a separate threading process after forging for bolting, which requires a lot of work, and requires a washer to increase the fastening force. This increases the yield, as well as the production cost is increased, there is a problem that the clutch lever does not operate correctly due to the play between the groove portion and the fixing pin.

The present invention has been made to solve the above-mentioned problems of the prior art, the number of parts required for fastening the fixing pin is reduced and the fastening process is simplified so that the yield is increased, the production cost is reduced, the gap between the groove portion and the fixing pin It is an object of the present invention to provide a fixing pin fastening structure of a clutch for a washing machine which can be reduced and improve the operating performance of the clutch lever.

1 is a cross-sectional view showing a washing machine according to the prior art,

Figure 2 is an enlarged cross-sectional view of the clutch of the washing machine according to the prior art,

3 is an enlarged plan view showing a fixing pin according to the prior art;

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a sectional view showing a washing machine according to the present invention;

6 is an enlarged cross-sectional view of the clutch of the washing machine according to the present invention;

7 is an enlarged plan view of a fixing pin according to the present invention;

8 is a cross-sectional view taken along line B-B of FIG.

9 is a side view showing the fixing pin according to the present invention is fastened to the clutch housing.

<Explanation of symbols on main parts of the drawings>

90: outer tank 92: inner tank

94: washing wing 120: clutch

121: clutch housing 121a: upper clutch housing

121b: lower clutch housing 122: clutch pulley

124: gear shaft 125: de-shrink

126: washing shaft 127: through hole

128: gear unit 129: brake drum

130: spring block 132: clutch boss

134: brake lever 135: first spring

136: hinge 137: clutch lever

138: snap ring 139: second spring

140: fixing pin 142: hollow part

143 flange 145 serration

Fixing pin fastening structure of the clutch for a washing machine according to the present invention for solving the above problems is the clutch lever is inserted into the fixing pin coupled to one side of the clutch housing is interlocked during the operation of the brake lever to selectively rotate the inner tank or washing blades In the clutch for a washing machine,

The clutch housing has a through hole formed at one side, and the fixing pin has a flange for preventing overinsertion at one side thereof, and is inserted into the through hole, and then riveted and fastened.

In addition, the through hole is formed in a serration shape, the fixing pin is characterized in that the serration is formed to be inserted into the through hole on the outer peripheral surface.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a cross-sectional view showing a washing machine according to the present invention, Figure 6 is an enlarged cross-sectional view of the clutch of the washing machine according to the present invention.

As shown in FIG. 5, the washing machine according to the present invention is fixed to the inside of the cabinet 80 through a cabinet 80 and a plurality of hook members 82, which form an exterior, and at the same time wash water. An outer tub 90 accommodated therein, a drain hose 96 and a drain valve 98 installed at a lower portion of the outer tub 90 to discharge the wash water in the outer tub 90, and an interior of the outer tub 90. An inner tub 92 rotatably installed to accommodate laundry, a washing vane 94 rotatably installed on a bottom surface of the inner tub 92 to form a rotary stream in the wash water, and a lower portion of the outer tub 90. It is composed of a motor 120 is installed and driven on one side, the clutch 120 is connected to the motor 100 to selectively rotate the inner tank 92 and the washing blade 94.

As shown in FIG. 6, the clutch of the washing machine according to the present invention has an inner tub 92 and a washing blade 94 rotatably installed at an outer tub 90 installed inside the cabinet 80. It is selectively rotated by the clutch 120 and the motor 100 provided below the 90.

As shown in FIG. 5, the clutch 120 is provided with a clutch pulley 122 at an end thereof, and a motor pulley 102 is installed at a rotation shaft of the motor 100, such that the clutch pulley 122 and the motor are provided. The pulley 102 is connected as a belt 105 to transfer the driving force of the motor to the inner tank 92 and the laundry wing (94).

That is, the clutch 120 is composed of an upper clutch housing 121a and a lower clutch housing 121b and is disposed inside the clutch housing 121 mounted below the outer tub 100 and inside the clutch housing 121. A gear shaft 124 provided with a clutch pulley 122 at a lower side thereof, a washing shaft 126 installed at an upper side of the gear shaft 124 and connected to a washing blade 94, and one side of the washing shaft 126. A brake drum 129 having a gear unit 128 installed therein for reducing or converting power, and a dehydration shaft 125 fixed to an upper portion of the brake drum 129 and connected to the inner tank 102; It is fixed to the lower end of the gear shaft 124 is composed of a spring block 130 and the clutch boss 132.

In addition, one side of the clutch housing 121 is operated by the drain valve actuating solenoid (not shown) to brake the brake drum 129 and return by the first spring 135. A clutch lever 137 and a second spring rotatably connected to the hinge 136 and coupled to the other side of the clutch housing 121 to be engaged with the clutch boss 132 during operation of the brake lever 134. The fixing pin 140 to which 139 is coupled is fastened.

7 is a plan view showing an enlarged fixing pin according to the present invention, Figure 8 is a cross-sectional view showing the line BB of Figure 7, Figure 9 is a side view showing the fixing pin according to the present invention is fastened to the clutch housing .

Here, the clutch housing 121 has a through hole 127 formed at one side thereof, and the fixing pin 140 has a flange 143 formed at one side thereof so that one side is inserted into the through hole 127. At this time, the fixing pin 140 is limited to the insertion by the flange 143, the end of the fixing pin 140 inserted into the flange 143 is riveted and fastened to the clutch housing 121. .

To this end, the fixing pin 140 is formed at the end of the hollow portion 142 for ease of riveting is made easy to open to the outside during riveting.

The other side of the fixing pin 140 is provided with a groove portion 146 at the end of which the snap ring 138 is engaged, so that the clutch lever 137 and the second spring 139 are inserted together and snapped so as not to be separated. Ring 138 is inserted.

In addition, the through hole 127 is formed in a serration shape such as tooth teeth, and the fixing pin 140 is the through hole 127 at the outer circumference of the fixing pin 140 inserted into the through hole 127. A serration 145 corresponding to the through hole 127 is formed to be inserted into the clutch, so that the clutch lever 137 is securely fixed. On the other hand, the fixing pin is deformed at the outer periphery of the through hole in the riveting process. It adheres without play.

Although the fixing pin fastening structure of the clutch for a washing machine according to the present invention as described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed herein and those skilled in the art within the scope of the invention Of course, various modifications can be made, including materials.

In the fixing pin fastening structure of the clutch for a washing machine according to the present invention configured as described above, the clutch housing is formed with a through hole on one side, the fixing pin is formed with a flange to prevent over-insertion on one side of the through hole After being inserted into the riveting process and fastened, the fastening process is simple, reducing the labor time, the yield is increased, the number of parts is reduced, the production cost is reduced, the fixing pin is riveted and close to the groove, the play is small There is an advantage that the operating force of the clutch lever is improved.

Claims (2)

In the clutch for a washing machine is inserted into the fixing pin coupled to one side of the clutch housing interlocked during operation of the brake lever and selectively rotates the inner tank or the washing blade, The clutch housing has a through-hole formed on one side, and the fixing pin has a flange for preventing over-insertion on one side, and is inserted into the through-hole to be fastened by riveting. rescue. The method of claim 1, The through-hole is formed in a serration shape, the fixing pin fastening pin fastening structure of the clutch for a washing machine, characterized in that the serration is formed to be inserted into the through-hole on the outer peripheral surface.