KR20170011056A - Dishwasher - Google Patents

Abstract

The dishwasher of the present invention comprises: a cabinet; A tub mounted in the cabinet to provide a washing space therein; A base support coupled under the tub to support the tub; A door rotatably mounted on a rotary shaft provided in front of the tub; A rope connected between the door and the base support to move according to a change in distance between the door and the base support when the door is opened or closed; An elastic member having one end fixed to the base supporter and the other end connected to an end of the rope to provide an elastic force in a direction in which the door is closed; And a deflector mounted in the middle of the rope and having at least two sliding surfaces and changing a connection direction of the rope, wherein a sliding surface of the deflector is formed to be convex to reduce a contact area with the rope do.
According to the dishwasher of the present invention, no noise due to friction is generated between the rope supporting the door and the deflector supporting the rope, and the door can be smoothly rotated when the door is opened and closed.

Description

Dishwasher {Dishwasher}

The present invention relates to a dishwasher.

A dishwasher is a device that uses a detergent and washing water to wash away dirt, such as food wastes, that are placed on dishes or cooking utensils (hereinafter, "objects to be cleaned").

In general, a dishwasher includes a tub provided with a washing space, a rack provided in the tub for receiving a washing object, a spraying arm for spraying washing water into the rack, a sump for storing washing water, a washing water stored in the sump, .

Such a dishwasher can perform a washing process for washing dirt on the object to be cleaned, a rinsing process for rinsing the object to be cleaned after the rinsing process, and a drying process for removing the moisture on the surface of the object to be rinsed through the rinsing process have.

In the case of a general dishwasher, a rope and a spring are used as a structure for adjusting the opening angle of the door to be rotated or fixing the position of the door when the door is opened. That is, the position of the door is adjusted by the elastic force of the spring.

In a conventional dishwasher, a dishwasher disclosed in Japanese Patent Application Laid-Open No. 10-1257508 includes a tub having a washing tub formed therein, a door selectively opening and closing the front of the tub, a hinge shaft A door hinge rotatably coupled to the hinge shaft, and a fixing member for preventing the door hinge from being detached from the bracket.

However, in the conventional dishwasher, the springs connected to the ropes are arranged in the concave portions formed on the outer surfaces of the both side portions of the tub, and the concave portions are formed long in the vertical direction close to the door.

Thus, there is a problem that the space for accommodating the object to be cleaned in the tub is reduced by the recess.

In addition, since the rope is connected to the rollers mounted on the lower part so as to be bent so much that the tensile force applied to the rope is large, there is a problem that the rope is broken when the durability of the rope is poor.

The rope is not primarily woven but a braided type. Since the contact area between the roller and the rope is large, there is a problem that the rope slides on the rollers and noise is generated therebetween.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a dishwasher capable of smoothly turning when a door is opened and closed without generating noise due to friction between a rope supporting a door and a roller supporting a rope The purpose is to provide.

According to an aspect of the present invention, there is provided a dishwasher including a cabinet; A tub mounted in the cabinet to provide a washing space therein; A base support coupled under the tub to support the tub; A door rotatably mounted on a rotary shaft provided in front of the tub; A rope connected between the door and the base support to move according to a change in distance between the door and the base support when the door is opened or closed; An elastic member having one end fixed to the base supporter and the other end connected to an end of the rope to provide an elastic force in a direction in which the door is closed; And a deflector mounted in the middle of the rope and having at least two sliding surfaces and changing a connection direction of the rope, wherein a sliding surface of the deflector is formed to be convex to reduce an area of contact with the rope do.

The elastic member is preferably a coil spring that is extendably installed in a guide groove provided in the base supporting portion in a horizontal direction.

The deflector includes a plate portion, a bearing bush provided at a lower portion of the plate portion and mounted to a bearing pin protruding outward from the side wall of the base supporting portion, a first sliding surface formed at an outer circumferential portion of the bearing bush, And a second sliding surface formed at an upper portion of the plate portion at a predetermined angle.

The rope is mounted on the first sliding surface so as to be bent at a larger angle than the second sliding surface, and the first sliding surface has a larger radius of curvature than the second sliding surface.

The deflector may further include a latching portion provided on the opposite side of the second sliding surface and hooked on a locking projection provided on the front side of the base supporting portion.

It is preferable that the locking protrusions are provided in pairs so that both sides of the locking portion are wrapped and supported.

And the engaging portion includes a through hole through which the one end of the engaging projection is inserted.

The deflector may further include a support protrusion protruding in the radial direction from the bearing bush and axially supported by a stopper provided on a side wall of the base supporter.

The deflector may further include a first reinforcing rib provided to be connected between one end of the first sliding surface and the plate portion and a second reinforcing rib provided to be connected between one end of the second sliding surface and the plate portion .

According to the dishwasher of the present invention described above, no noise due to friction is generated between the rope supporting the door and the deflector supporting the rope, and the door can be smoothly rotated when opening and closing the door.

Further, the deflector can be formed in a shape that can be reinforced with strength while being formed of a material having a small friction, and can be prevented from being damaged by fixing the deflector without any separate fastening member, thereby providing excellent durability.

And since the rope supporting the door is disposed on both sides of the base support portion supporting the tub from below, the washing space can be larger because the rope does not occupy the washing space inside the tub.

1 is a view schematically showing a configuration of a dishwasher according to an embodiment of the present invention.
2 is a view illustrating the interior of a cabinet in a dishwasher according to an embodiment of the present invention.
3 is an enlarged perspective view of the deflector mounting portion in FIG.
4 is a view showing that an elastic member is mounted in the guide groove of the base supporting portion.
Fig. 5 is a perspective view showing a deflector mounted in Fig. 2. Fig.
Fig. 6 is a view showing a state in which the door is opened in Fig. 2. Fig.
7 is an enlarged view of a deflector mounting portion in a dishwasher according to another embodiment of the present invention.
8 is a perspective view showing a deflector mounted in Fig.
Fig. 9 is a perspective view showing a concave portion to which the deflector is mounted in Fig. 7;
10 is a side view showing a process of mounting a deflector on a concave portion.

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

1, the dishwasher 100 according to an embodiment of the present invention includes a cabinet 1 forming an outer appearance, a tub 11 located inside the cabinet to provide a washing space, A sump 13 for collecting wash water sprayed into the tub, a sump 13 for spraying the wash water into the sump, And a pump 8 for supplying washing water stored in the sump 13 to the spraying rocks 3, 5.

A base supporting part 200 is provided below the cabinet 1 and the base supporting part 200 can form a lower outer appearance of the cabinet 1.

The rack may include a first rack 191 (an upper rack) and a second rack 193 (a lower rack) located at a lower portion of the first rack.

The cabinet 1 is provided with a door 16 for opening and closing the tub 11. The upper rack 191 and the lower rack 193 are provided to be pulled out from the tub 11 when the door 16 is opened. .

In other words, a rack (not shown) is provided on the inner circumferential surface of the tub 11 to guide the racks 191 and 193 toward the door 16, and the racks May be further provided.

The sump 13 includes a storage part 133 for storing wash water, a cover 15 for separating the tub 11 and the storage part 133 from the upper part of the storage part, And a connection part 131 connecting to the cover 15.

In this case, the cover 15 may further include a recovery hole 151 provided to penetrate through the cover 15 to supply wash water to the storage unit 133.

The recovery hole 151 may be provided only in an area located above the storage part 133 of the area provided by the cover 15 or may be provided in the entire area of the cover 15, To the connection portion 131. [0050]

The connection part 131 may be inclined at a predetermined angle toward the storage part 133 so as to guide the washing water flowing through the collection hole 151 to the storage part 133.

It is preferable that the tub 11 is located in the upper space of the cover 15. This is because the washing water sprayed to the tub through the spraying arms 3 and 5 can be discharged into the collection hole 151 and the connecting portion 131 To be stored in the storage unit 133 through the communication unit 130. [

The cover 15 may be formed in any shape as long as it can distinguish the internal space of the cabinet 1. The connection portion 131 may be fixed to the lower portion of the cover 15.

The connection portion 131 may be provided to cover the lower space of the cover 15 (the planar portion of the cover may be the same as the plane of the body) or may surround only the space in which the recovery hole 151 is formed .

Meanwhile, the storage unit 133 may be formed by bending the cover 15 concavely toward the bottom surface of the cabinet 1. However, it is preferable that the cross-sectional area of the storage part 133 is smaller than the area of the connection part 131, but it is inclined downward toward the storage part 133.

If the storage section 133 has a smaller cross sectional area than that of the connection section 131, the pump section 8 can be positioned in a lower region of the connection section 131, So that the volume of the dishwasher 100 can be minimized.

The storage unit 133 receives the washing water through a water supply channel 135 connected to a water supply source and the washing water stored in the storage unit 133 is supplied to the cabinet 140 through the drainage channel 137 and the drainage pump 139, (1).

The spray gun provided in the present invention includes a lower arm 5 provided inside the tub 11 to wash the object to be cleaned stored in the lower rack 193, And may include an arm (3).

The lower arm 5 and the upper arm 3 are supplied with washing water through the pump 8 and the supply passage 7. The supply passage 7 is connected to the lower arm 5 via a first supply A second supply passage 73 connected to the upper arm 3 and a switching valve 75 for selectively opening the supply passages 71 and 73.

When the lower arm 5 is rotatably provided in the tub 11, the lower arm 5 is rotatably coupled to the holder 17 provided on the cover 15, (71) may be provided to supply wash water to the holder (17).

Meanwhile, if the upper arm 3 is rotatably provided in the tub 11, the upper arm 3 may be rotatably coupled to the second supply passage 73.

The pump 8 includes a housing 81 provided with an impeller 85, an inlet 84 through which the washing water flows into the housing 81, an outlet 82 through which the washing water is discharged from the housing 181, And a motor 87 provided outside the housing 181 to rotate the impeller 186.

The inlet 84 is connected to the reservoir 133 via an inlet connection tube 97 and the outlet 82 is connected to the selector valve 75 through an outlet connection tube 99.

Therefore, when power is supplied to the motor 87 and the impeller 85 rotates, the water flowing into the housing 81 from the sump 13 moves to the switch valve 75 through the discharge port 82, The water supplied to the upper arm 75 and the lower arm 5 is supplied to the upper arm 3 and the lower arm 5 along the supply flow paths 71 and 73 opened by the switching valve 75.

The pump 8 is fixed to the inside of the cabinet 1 through an insulating portion 91. The insulating portion attenuates vibrations generated in the pump 8 so that the vibration generated in the pump 8 is transmitted to the sump 13 and / To the cabinet (1).

The insulating part provided in the present invention not only makes the outer circumferential surface of the pump 8 and the bottom surface of the cabinet 1 at a predetermined distance but also the means for spacing the sump 13 from the outer circumferential surface of the pump 8 by a predetermined distance At least two or more of them are preferable.

FIG. 2 is a perspective view of a dishwasher according to the present invention, in which a cabinet is omitted and its interior is shown, and FIG. 3 is an enlarged perspective view of a deflector mounting portion.

A hinge bracket 162 is coupled to the lower portion of the door 16 and a hinge shaft 164 provided on the hinge bracket 162 is mounted on both sides of the front side of the tub 11, Is rotatably mounted on the tub (11).

Since the hinge shaft 164 is disposed in the horizontal direction, the door 16 can be rotated up and down to be opened and closed.

A rope 250 is connected between the door 16 and the base supporter 200 to move the rope 250 when the door 16 is rotated.

One end of the rope 250 is connected to a hook 165 provided at a rear end of the hinge bracket 162 and the other end of the rope 250 is connected to an elastic member 280 mounted on the base support 200. [ Lt; / RTI >

One end of the elastic member 280 is fixed to the base supporter 200 and the other end of the elastic member 280 is connected to the other end of the rope 250 to be extendable.

The one end of the rope 250 is not connected to the hook 165 of the hinge bracket 162 but the one end of the rope 250 is embedded in the hook 165, And a first rope engagement portion 260 having a first end.

The other end of the rope 250 is not directly jutted to the elastic member 280 but the other end of the rope 250 is embedded so that the loop 287 of the elastic member 280 And a second rope fastening portion 270 having a shape adapted to be caught by the second rope fastening portion 270.

The rope 250 is connected to move along the base supporting part 200. A deflector 300 for changing the connection direction of the rope 250 is provided at the middle of the base supporting part 200 Respectively.

2, the base support 200 includes a recess 210 on which the deflector 300 is mounted and a guide groove 220 on which the elastic member 280 is extendably mounted. . ≪ / RTI >

The lower end of the concave portion 210 and the front end of the guide groove 220 may be formed to be longer than the lower end of the concave portion 210, And can communicate with each other.

The rope 250 is disposed along the recess 210 and the guide groove 220 so that the rear portion of the rope 250 and the elastic member 280 are disposed on the side of the base support 200 in a horizontal direction .

In contrast, according to the present invention, the rope 250 is prevented from encroaching on the inside of the tub 11, and the inside of the cabinet 1 Space can be efficiently utilized.

The elastic member 280 is preferably a coil spring that is extendably installed in a guide groove 220 provided in the base support 200 in a horizontal direction.

The elastic member 280 is pulled and stretched by the rope 250 when the door 16 is pivoted to open, thereby applying a resistance force to the door 16. Therefore, it is possible to prevent the door 16 from being opened at too high speed due to its own weight to be subjected to impact.

When the door 16 is closed, the elastic member 280 contracts and pulls the rope 250, thereby restoring the door 16 in a closing direction, thereby helping the user to close the door with a small force.

3, the deflector 300 is rotatably mounted on a bearing pin 212 protruding outward from a side wall of the concave portion 210, and is fixed to move .

FIG. 4 is a view showing that the elastic member 280 is mounted on the guide groove 220 of the base support 200.

A spring mounting portion 230 for mounting and supporting a rear end portion of the elastic member 280 is provided at a rear portion of the guide groove 220.

The elastic member 280 includes a first mounting portion 282 mounted at the rear end of the elastic member 280 and a second mounting portion 287 connected to the end of the rope 250, ).

The spring mounting part 230 may include a through hole 232 formed on the outer side of the plate and a locking protrusion 235 protruding from the rear surface of the plate.

The first mounting portion 282 of the elastic member 280 can be fixed by being caught by the locking protrusion 235 through the passage groove 232. [

In addition, the ring-shaped second mounting portion 287 is connected to the hook portion of the second rope fastening portion 270 by hanging.

The elastic member 280 maintains a state in which the rope 250 is pulled tight when the door 16 is rotated and opened and the door 16 is opened slowly when the door 16 is opened, It is possible to apply an elastic force so that the door 16 can be rotated and raised by a small force when the door 16 is closed.

As shown in FIG. 5, the deflector 300 may include at least two sliding surfaces that slide when the rope 250 moves.

That is, the deflector 300 includes a plate portion 310 constituting the main body, a bearing bush 320 provided at a lower portion of the plate portion and mounted on a bearing pin 212 protruding from the recess 210, A first sliding surface 330 formed at an outer periphery of the bearing bush at a predetermined angle and a second sliding surface 340 formed at an upper portion of the plate portion at a predetermined angle.

The plate portion 310 is a main body that structurally supports the deflector 300, and a bearing bush 320 having a circular pipe shape may be formed at a lower portion thereof.

The bearing bush 320 has a bearing pin 212 protruding in a cylindrical shape from the side wall of the recess 210, so that the deflector 300 can be mounted.

The inner diameter of the bearing bush 320 may be equal to or slightly larger than the outer diameter of the bearing pin 212 so that the deflector 300 can be mounted to rotate about the center of the bearing pin 212 at a predetermined angle .

The bearing pin 212 may be a hollow cylinder or a hollow pipe.

The first sliding surface 330 formed in the periphery of the bearing bush 320 is formed in the shape of an arc having the same center as that of the bearing bush 320, 210 < / RTI >

The second sliding surface 340 is formed on the plate 310, and may have an arc shape having an angle of about 150 degrees.

The lower end of the second sliding surface 340 may extend horizontally toward the front side.

The first sliding surface 330 and the second sliding surface 340 may be concave so that the rope 250 is slidably supported and the rope 250 is not easily detached from the supporting surface.

In addition, the first sliding surface 330 and the second sliding surface 340 are formed to be convex to reduce the contact area with the rope.

The convexly sliding surface may be formed by continuously connecting concave polygonal curved surfaces and convex polygonal curved surfaces.

3, the rope 250 slidably supported on the deflector 300 is bent to about 150 degrees as it passes the first sliding surface 330, and the second sliding surface 340 ) To about 60 degrees.

That is, the rope 250 is bent at a greater angle than the second sliding surface 340 on the first sliding surface 330.

The first sliding surface 330 preferably has a larger radius of curvature than the second sliding surface 340 in consideration of the angle of bending of the rope 250.

By varying the radius of curvature of the two sliding surfaces, it is possible to move the rope more smoothly as it moves while sliding along each sliding surface.

The deflector 300 may be integrally formed with the plate 310, the bearing bush 320, the first sliding surface 330, and the second sliding surface 340 with the same material.

The deflector 300 may be formed by injection molding with synthetic resin. The deflector 300 may be formed of a material having a high strength and a sliding surface may be formed of a material having a small friction, , It is difficult to manufacture a deflector because insert injection molding or double injection molding is required in this case.

For example, the sliding surface of the deflector can be formed of polyethylene with low friction and the rest of the polyoxymethylene. The strength of polyoxymethylene is about twice that of polyethylene, but the coefficient of friction is about two times It is bigger.

Therefore, in the present invention, the deflector is integrally formed of polyethylene having a low friction, and the overall shape of the deflector and the fixing structure thereof are improved, thereby completing the structural rigidity.

The bearing bush 320 is rotatably mounted on the bearing pin 212. The deflector 300 is provided on the opposite side of the second sliding surface 340, And a latching part 350 which is hooked on the latching protrusion 214 provided on the front wall of the recessed part 210.

The locking pawl 214 is fixed to the bearing bush 320 after the bearing bush 320 is rotatably mounted on the bearing pin 212 so that the deflector 300 can be fixed have.

5, the upper surface of the deflector 300 may be sloped downward from the upper end of the second sliding surface 340, and the locking portion 350 may be formed on the second sliding surface 340 That is, on the front side.

The locking protrusion 214 may have a resiliently deformable shape so as to be selectively engaged with the locking portion 350.

The locking protrusion 214 may be provided in a pair so as to support and support both sides of the locking portion 350.

In this case, the outer side of the pair of locking projections 214 can support the outer side surface of the locking portion 350 and fix the deflector 300 so as to prevent the deflector 300 from falling in the axial direction.

The latching part 350 may include a through hole 352 through which one end of the latching protrusion 214 is inserted.

When the latching protrusions 214 are provided in pairs, the latching protrusions on the inner side may include protrusions inserted into the through-holes 352, and the latching protrusions on the outer side may have a flat inner surface, (Not shown).

Fig. 6 shows the door opened in Fig.

When the door 16 is opened, the hinge bracket 162 is rotated about the hinge shaft 164, and the hook 165 is moved upward.

The rope 250 connected to the hook 165 is pulled to slide along the two sliding surfaces 330 and 340 of the deflector 300 to stretch the elastic member 280.

At this time, the elastic member 280 applies an elastic force in a direction to pull the rope 250, thereby reducing the speed at which the door 16 is rotated by its own weight, reducing the impact of the door 16 when the door 16 is completely opened give.

On the contrary, when the user opens and closes the opened door 16, since the elastic member 280 is applying the restoring force in the direction to pull the rope 250, the user lifts the door 16 and rotates the door 16 It makes it easy.

Figs. 7 to 10 show an embodiment in which a deflector having a different form from the embodiment of Figs. 2 to 6 is used.

Fig. 7 corresponds to Fig. 3, and the rope is omitted in Fig. 7 for convenience.

In the present embodiment, the deflector differs from the previous embodiment in that it further includes a shape of the upper portion, a shape of a portion mounting the deflector, and a reinforcing rib.

8, the deflector 400 includes a plate portion 410, a bearing bush 420, a first sliding surface 430, a second sliding surface 440, and a locking portion 450 The shape of the second sliding surface 440 and the locking part 450 is different from that of the previous embodiment.

The deflector 400 is not formed with an inclined surface at the upper end of the second sliding surface 440, but a concave second sliding surface 440 extends horizontally forward.

And extends in the horizontal direction at the lower end of the second sliding surface 440 as in the previous embodiment.

The locking part 450 is formed on the opposite side of the second sliding surface 440 and is formed to be connected to upper and lower parts extending horizontally on the second sliding surface 440.

The deflector 400 may further include a support protrusion 460 protruding radially from the bearing bush 420 and axially supported by a stopper 216 provided on a side wall of the recess 210.

As shown in FIGS. 9 and 10, the recess 210 may be provided with a stopper 216 at a lower right portion of the bearing pin 212.

8, the support protrusions 460 extend from the outer circumferential surface of the bearing bush 420 to the lower right side. The ends of the support protrusions 460 protrude rearward from the rear surface of the plate portion 410, As shown in FIG.

A hole 217 is formed beside the stopper 216 so that the support protrusion 460 can be inserted when the deflector 400 is mounted on the bearing pin 212. When the deflector 400 is rotated The stopper 216 is supported so that the support protrusion 460 does not extend in the axial direction.

9, the locking protrusions are provided in a pair so that the first locking protrusions (not shown) protruded rearward from the front wall of the recess 210 to support the locking portions 450 from both sides 214, and a second locking protrusion 215 formed between the front wall and the side wall of the recess 210.

The first locking protrusion 214 may have a flat inner surface and a stepped outer surface to reinforce its strength.

The rear portion of the second locking protrusion 215 is inclined so as to guide the insertion of the locking portion 450 of the deflector 400. The inner center portion of the second locking protrusion 215 protrudes to penetrate the through hole 452 ).

8, the deflector 400 includes a first reinforcing rib 470 connected to one end of the first sliding surface 430 and the plate 410, And a second reinforcing rib 480 connected to one end of the second sliding surface 440 and the plate portion 410.

The first reinforcing ribs 470 and the second reinforcing ribs 480 may have a substantially triangular shape and may be integrally formed so as to be perpendicularly connected between the plate portions 410 and the two sliding surfaces.

By forming the first reinforcing ribs 470 and the second reinforcing ribs 480, it is possible to reinforce a portion where the stress is concentrated in the deflector 400.

Therefore, when the two sliding surfaces 430 and 440 of the deflector 400 are subjected to the force by the rope 250, it is possible to prevent the connection portion with the plate portion 410 from being broken.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Changes will be possible.

1: cabinet 11: tub 13: sump
131: connection part 132: third support part 134: first support part
136: second support part 133: storage part 135:
137: drainage channel 139: drainage pump 15: cover
151: recovery hole 16: door 162: hinge bracket
164: Hinge shaft 165: Hook 17: Holder
3: upper arm 5: lower arm 7: supply channel
71: first supply passage 73: second supply passage 75: switching valve
8: Pump 81: Housing 82: Outlet
84: inlet port 86: first fastening part 88: second fastening part
85: impeller 87: motor 91: third insulating portion
200: base support part 210: concave part 212: bearing pin
214: locking protrusion 216: stopper 220: guide groove
230: spring mounting part 250: rope 260: first rope engaging part
270: second rope locking portion 280: elastic member
300: deflector 310: plate portion 320: bearing bush
330: first sliding surface 340: second sliding surface 350:
400: deflector 410: plate portion 420: bearing bush
430: first sliding surface 440: second sliding surface 450:

Claims (9)

cabinet;
A tub mounted in the cabinet to provide a washing space therein;
A base support coupled under the tub to support the tub;
A door rotatably mounted on a rotary shaft provided in front of the tub;
A rope connected between the door and the base support to move according to a change in distance between the door and the base support when the door is opened or closed;
An elastic member having one end fixed to the base supporter and the other end connected to an end of the rope to provide an elastic force in a direction in which the door is closed;
And a deflector mounted in the middle of the rope and having at least two sliding surfaces and changing the connecting direction of the rope,
Wherein the sliding surface of the deflector is convexly formed to reduce an area of contact with the rope. The method according to claim 1,
Wherein the elastic member is a coil spring that is extendable in a guide groove provided in a horizontal direction on the base support portion. 3. The method of claim 2,
The deflector includes:
A plate portion,
A bearing bush provided at a lower portion of the plate portion and mounted to a bearing pin protruding outwardly from a side wall of the base supporting portion,
A first sliding surface formed at an outer periphery of the bearing bush at a predetermined angle,
And a second sliding surface formed at an upper portion of the plate portion at a predetermined angle. The method of claim 3,
Wherein the rope is mounted on the first sliding surface so as to be bent at a larger angle than the second sliding surface,
Wherein the first sliding surface has a larger radius of curvature than the second sliding surface. The method of claim 3,
Wherein the deflector further comprises a latching portion provided on a side opposite to the second sliding surface and hooked on a latching protrusion provided on a front side of the base supporting portion. 6. The method of claim 5,
Wherein the locking protrusions are provided in a pair so as to support and support both sides of the latching portion. 6. The method of claim 5,
And the latching portion includes a through hole into which the one end of the latching protrusion is inserted. 6. The method of claim 5,
Wherein the deflector further comprises a support protrusion protruding radially from the bearing bush and axially supported by a stopper provided on a side wall of the base supporter. The method of claim 3,
The deflector includes:
A first reinforcing rib provided to be connected between one end of the first sliding surface and the plate portion,
Further comprising a second reinforcing rib connected to one end of the second sliding surface and the plate portion.

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