KR20210056624A - Rail device for dishwasher - Google Patents

Abstract

An embodiment of the present invention comprises: a guide body unit; an upper support roller unit; a lower support roller unit; a guide rail unit; and a rack roller unit. The upper support roller unit is combined with one side of the guide body unit, and is rotated with respect to a central axis. The lower support roller unit is combined with the one side of the guide body unit, and is rotated with respect to the central axis. The guide rail unit is extended along a sliding direction in a state of allowing one side to be inserted into a space between the upper support roller unit and the lower support roller unit. The rack roller unit allows one side to be inserted into an inside of the guide rail unit and allows the other side to be combined with one surface of the inside of a body of the dishwasher or to be combined with a sliding basket. The guide rail unit includes: an upper guide unit having a shape corresponding to the circumference of the upper support roller unit; and a lower guide unit having a shape corresponding to the circumference of the lower support roller unit. Provided is a rail device for a dishwasher capable of allowing any one of the upper guide unit and the lower guide unit to form a space unit (B) spaced from the rack roller unit. The present invention can save manufacturing costs by reducing the number of parts.

Description

Rail device for dishwasher {RAIL DEVICE FOR DISHWASHER}

The present invention relates to a rail device for a dishwasher, and more particularly, a track part on which a bearing is mounted on an outer circumferential surface of a shaft of a rack roller part and a support roller part is provided, and in any one of the upper guide part and the lower guide part of the guide rail part. It relates to a rail device for a dishwasher with improved sliding operation feeling by forming a space portion to accommodate the twisting of the rack roller portion.

A dishwasher is a kitchen appliance that can automatically wash and dry dishes, cups, and spoons. It operates on the principle of washing dishes with strong water while soaking food with hot steam and detergent. In general, the performance is evaluated according to how thoroughly high-pressure water is sprayed to wash the food.

Dishwashers such as the above are home appliances that increase convenience in life and reduce housework hours, like conventional air purifiers, dryers, and clothes managers. Recently, sales have increased rapidly in the world, including in Korea.

Dishes and cutlery to be washed in the dishwasher can be inserted through a sliding basket that slides inside and outside the dishwasher, and the sliding basket is generally a guide of a dishwasher rail device that is fixedly coupled to the inner wall of the dishwasher. It slides in the entry/exit direction by

However, when a conventional rail device is applied to a dishwasher, a strong pressure of water is applied to the inside of the dishwasher at various angles, so movement and impact occur on the left and right sides of the guide rail in the sliding basket. Accordingly, the rail device applied to the dishwasher needs to have a function of securing a clearance between the left and right sides or absorbing the movement between the left and right in response to this.

In addition, in the conventional rail device, as the top and bottom of the guide rail are formed in a shape corresponding to the rack roller to guide the rack roller, interference with the twisting of the rack roller occurs during sliding, resulting in a problem of deteriorating the operating sensibility. there was.

Korean Registered Patent Publication No. 10-1158584 (2012.06.14)

The present invention is to solve the problems of the prior art described above, the object of the present invention is provided with a track portion on which a bearing is seated on an outer circumferential surface of a shaft of a rack roller portion and a support roller portion, and an upper guide portion and a lower guide portion of the guide rail portion It is to provide a rail device for a dishwasher with improved sliding operation sensibility by forming a space portion in any one of the rack rollers to accommodate the twisting of the rack roller portion.

In order to achieve the above object, one aspect of the present invention is a guide body, coupled to one side of the guide body, an upper support roller rotatable with respect to a central axis, coupled to one side of the guide body, and the central axis A lower support roller part rotatable as a reference, a guide rail part extending along the sliding direction and one side inserted into the guide rail part with one side inserted into the space between the upper support roller part and the lower support roller part The other side includes a rack roller unit coupled to one surface inside the dishwasher body or coupled to a sliding basket, and the guide rail unit has a shape corresponding to a circumference of the upper support roller unit and a circumference of the lower support roller unit A rail device for a dishwasher including a lower guide portion having a shape corresponding to that, wherein one of the upper guide portion and the lower guide portion forms a space portion B between the rack roller portion.

In one embodiment of the present invention, the guide rail part further comprises a stop guide part connecting the upper guide part and the lower guide part, and the stop guide part It may be a rail device for a dishwasher, which is formed to be spaced apart at intervals, and forms a hollow space A between the guide rail part and the rack roller part.

In one embodiment of the present invention, the upper guide portion is configured to have an upper end, a first upper side portion bent at one end of the upper end, and a second upper side side portion bent at the other end of the upper end, and the first upper side portion The lower portion is connected to the upper portion of the middle guide portion, and the lower guide portion is configured to have a lower portion, a first lower side side portion bent at one end of the lower portion, and a second lower side side portion bent at the other end of the lower portion, and the first lower portion An upper portion of the side portion is connected to a lower portion of the middle guide portion, and the space portion (B) is formed between the rack roller portion and any one of the first upper side portion and the first lower side portion. It may be a rail device for a washing machine.

In one embodiment of the present invention, the rack roller part is inserted into the guide rail part, the rack roller body part rotatable with respect to a central axis, a rack member part fixedly coupled to one surface inside the dishwasher body, and the rack And a rack coupling part which penetrates and couples the center of the roller body part and one side of the rack member part, and the rack coupling part allows the rack roller part to be moved by a predetermined distance in the left and right direction, and the rack roller body part and the rack member It may be a rail device for a dishwasher, characterized in that the parts are coupled in a spaced state.

In one embodiment of the present invention, the rack roller unit further comprises a rack bearing unit having one or more bearings disposed in a space between an inner circumferential surface of the rack roller main unit and an outer circumferential surface of the rack coupling unit It may be a rail device for a washing machine.

In one embodiment of the present invention, the rack bearing unit may be a rail device for a dishwasher, characterized in that the rack roller unit is spaced apart from an inner circumferential surface of the rack roller body so that the rack roller unit can be moved by a predetermined distance in the left and right direction.

In one embodiment of the present invention, the rack coupling portion may be a rail device for a dishwasher, characterized in that a track portion on which the rack bearing portion can be seated is formed on an outer circumferential surface.

In one embodiment of the present invention, the upper support roller portion is rotatable about a central axis, the first roller frame portion and the center of the first roller frame portion and the circumferential surface formed to correspond to the upper guide portion, and the And a first roller coupling portion coupled through one side of the guide body portion, wherein the first roller coupling portion includes the first roller frame portion and the guide body portion so that the upper support roller portion can be moved by a predetermined distance in the left and right direction. It may be a rail device for a dishwasher, which is coupled in a spaced apart state.

In an embodiment of the present invention, the upper support roller part further comprises a first bearing part having one or more bearings disposed in a space between the inner circumferential surface of the first roller frame part and the outer circumferential surface of the first roller coupling part It may be a rail device for a dishwasher characterized by.

In one embodiment of the present invention, the first bearing part is a rail device for a dishwasher, characterized in that the first bearing part is spaced apart from the inner circumferential surface of the first roller frame part so that the upper support roller part can be moved by a predetermined distance in the left and right direction. I can.

In one embodiment of the present invention, the first roller coupling portion may be a rail device for a dishwasher, characterized in that a first track portion is formed on an outer circumferential surface of the first bearing portion to be seated.

In one embodiment of the present invention, the lower support roller part is rotatable about a central axis, and the second roller frame part and the center of the second roller frame part are formed so that the circumferential surface corresponds to the lower guide part. And a second roller coupling portion coupled through one side of the guide body portion, wherein the second roller coupling portion includes the second roller frame portion and the guide body portion so that the lower support roller portion can be moved by a predetermined distance in the left and right direction. It may be a rail device for a dishwasher, which is coupled in a spaced apart state.

In one embodiment of the present invention, the lower support roller part further comprises a second bearing part having at least one bearing disposed in a space between the inner circumferential surface of the second roller frame part and the outer circumferential surface of the second roller coupling part It may be a rail device for a dishwasher characterized by.

In an embodiment of the present invention, the second bearing part is spaced apart from the inner circumferential surface of the second roller frame part so that the lower support roller part can be moved by a predetermined distance in the left and right direction. It can be a device.

In one embodiment of the present invention, the second roller coupling portion may be a rail device for a dishwasher, characterized in that a second track portion to which the second bearing portion can be seated is formed on an outer circumferential surface.

According to an aspect of the present invention, a space part is formed in any one of the upper guide part and the lower guide part of the guide rail part to accommodate the distortion of the rack roller part, thereby improving the sliding operation feeling, and moving the left and right width directions and It can absorb shock more smoothly.

In addition, the rack roller part and the support roller part are provided with a track part on the outer circumference of the shaft on which the bearing is seated, so even if there is no separate retainer to hold the bearing, the rack roller part and the support roller part rotate smoothly to improve operability and reduce the number of parts. Cost can be saved.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view and a partial enlarged view of a rail device for a dishwasher according to an embodiment of the present invention.
2 is a flow chart showing the sliding in the drawing direction of the rail device for a dishwasher according to the present invention.
3 is a side view of a rail device for a dishwasher according to the present invention.
4 is a side view of a guide rail part according to an embodiment of the present invention.
5 is a perspective view of a guide rail part according to an embodiment of the present invention.
6A and 6B are a cross-sectional view of a rack roller unit and a perspective view of a rack coupling unit according to an embodiment of the present invention, respectively.
7A and 7B are cross-sectional views of an upper support roller part and a perspective view of a first roller coupling part according to an embodiment of the present invention, respectively.
8A and 8B are cross-sectional views of a lower support roller part and a perspective view of a second roller coupling part according to an embodiment of the present invention, respectively.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" with another part, this includes not only "directly connected" but also "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided, not excluding other components, unless specifically stated to the contrary.

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

1 is a perspective view and a partial enlarged view of a rail device for a dishwasher according to an embodiment of the present invention, FIG. 2 is a flow chart showing the sliding in the withdrawal direction of the rail device for a dishwasher according to the present invention, and FIG. 3 is a diagram of the present invention. Each of the side views of the dishwasher rail device is shown.

1 to 3, the rail device 1000 for a dishwasher according to the present invention includes a guide body part 100, an upper support roller part 400, a lower support roller part 500, and a rack roller part. (300), it is configured to include a guide rail portion (200).

In the rail device 1000 for a dishwasher according to the present invention, the guide body part 100 is integrally slid by being combined with a sliding basket, and the rack roller part 300 is connected to one surface inside the dishwasher. Contrary to the embodiment, the guide body part 100 may be coupled to one surface inside the dishwasher, and the rack roller part 300 may be combined with a sliding basket to be integrally slid. .

Hereinafter, for convenience of explanation, it will be described based on the first embodiment of the present invention. However, it is natural that various embodiments to be described later may correspond to the second embodiment of the present invention and be similarly applied.

The guide body 100 is a member that is coupled to one side of a sliding basket that moves inside and outside the dishwasher and moves integrally with the sliding basket.

The guide body portion 100 has a relatively narrow width, and the side thereof is coupled to one side of the sliding basket, and the upper support roller portion 400 and the lower support roller portion 500 are coupled to the opposite side. It may be provided with both sides having a predetermined cross-sectional area.

The upper support roller part 400 and the lower support roller part 500 are each coupled to a position spaced apart from each other on one surface of the guide body part 100, and have an axis perpendicular to one surface of the guide body part 100 As a result, it may be formed in a cylindrical shape that can be rotated.

The guide body part 100 and the sliding basket are supported by the guide rail part 200 inserted into the space between the upper support roller part 400 and the lower support roller part 500 and guide the sliding at the same time. do.

As shown, in the upper support roller part 400, a groove part having a predetermined depth may be formed along the circumferential direction of the central axis. The groove portion is formed to correspond to the upper guide portion 210 of the guide rail portion 200 to be described later.

In this case, the concave portions of the upper support roller unit 400 according to an embodiment of the present invention may be formed to have a cross-section that gradually narrows along the depth direction while being symmetrical with respect to the center along the circumferential direction. In this case, since the groove portion surrounds the outer circumferential surface of the upper guide portion 210, the upper support roller portion 400 is fastened to the guide rail portion 200 and the load can be stably supported.

Meanwhile, the upper support roller part 400 may be formed in plural on one surface of the guide body part 100. In this case, the load of the sliding basket and the guide body part 100 may be supported in a distributed state according to the number and position of the plurality of upper support roller parts 400.

Likewise, the lower support roller part 500 may be formed with a groove having a predetermined depth along the circumferential direction of the central axis. The groove portion is formed to correspond to the lower guide portion 220 of the guide rail portion 200 to be described later.

In this case, the concave portions of the lower support roller part 500 according to an embodiment of the present invention may be formed to have a cross-section that gradually narrows along the depth direction while being symmetrical with respect to the center along the circumferential direction. In this case, since the groove portion surrounds the outer circumferential surface of the lower guide portion 220, the lower support roller portion 500 is fastened to the guide rail portion 200 and at the same time, the load can be stably supported.

Meanwhile, the width of the groove of the lower support roller part 500 and the width of the groove of the upper support roller part 400 may be formed differently. This is to correspond to the formation of a space portion (B) between any one of the upper guide portion 210 and the lower guide portion 220 to be described later and the rack roller portion 300, to be described in detail later. do.

One side of the rack roller part 300 is inserted into the guide rail part 200 and the other side is fixedly coupled to one surface of an inner wall of the dishwasher body.

That is, one side of the rack roller part 300 is inserted into the rail of the guide rail part 200 to guide or stop the sliding basket in the entry and exit direction that moves integrally with the guide rail part 200. Do it.

The other side of the rack roller part 300 is fixedly coupled to one surface of the inner wall of the dishwasher and serves to support a load from the sliding basket. In particular, the rack roller part 300 may be formed in plural to stably support the sliding basket. That is, a plurality of the rack roller units 300 are formed to be spaced apart at a predetermined interval, and at this time, the angle formed by each of the rack roller units 300 determines the entry/exit direction of the sliding basket.

4 is a side view of a guide rail part according to an embodiment of the present invention, and FIG. 5 is a perspective view of a guide rail part according to an embodiment of the present invention, respectively.

1 to 5, one side of the guide rail part 200 is inserted into a space between the upper support roller part 400 and the lower support roller part 500. At this time, the guide rail part 200 receives the load of the sliding basket by the upper support roller part 400, and the rack roller part 300 inserted into the rail of the guide rail part 200 Supported by

When the guide rail part 200 is constrained by the guide body part 100, it may move integrally, and the sliding basket must be formed to have a length such that the sliding basket can be sufficiently opened and closed.

More specifically, the guide rail part 200 may be formed to include an upper guide part 210, a lower guide part 220, a front locking part 240, and a rear locking part 250.

The front locking portions 240 and the rear locking portions 250 are formed at both front and rear ends of the guide rail portion 200, respectively. The front locking part 240 and the rear locking part 250 serve to restrain the guide rail part 200 to the guide body part 100 and at the same time, the rack roller part inserted into the rail ( It collides with 300 and acts as a stopper to stop the sliding of the guide rail part 200.

At this time, the front locking portion 240 and the rear locking portion 250 include a shape that is caught by the upper support roller unit 400 or the lower support roller unit 500.

The front locking part 240 and the rear locking part 250 according to an embodiment of the present invention include a protruding ring part to surround the cylindrical shape of the upper support roller part 400 as shown through the drawing. can do. In addition, the front locking part 240 and the rear locking part 250 may have various shapes that are caught by the upper support roller part 400 or the lower support roller part 500.

According to an embodiment, a front drainage structure 241 and a rear drainage structure 251 for smooth drainage and discharging of foreign matter may be formed at the lower ends of the front engagement portion 240 and the rear engagement portion 250, respectively. At this time, the drainage structures 241 and 251 may be formed by penetrating the front locking portion 240 and the rear locking portion 250 with a predetermined size at the bottom of the vertical surface.

Accordingly, even when the front and rear surfaces of the guide rail part 200 are closed by the front locking part 240 and the rear locking part 250, washing water and foreign substances accumulated in the lower guide part 220 are prevented from being drained from the front drainage structure. It can be easily removed through 241 and the rear drainage structure 251.

Meanwhile, as shown in FIGS. 4 and 5, the guide rail part 200 may be formed in a structure having a “C”-shaped cross section.

The upper guide part 210 is formed to correspond to the shape of the circumferential surface of the upper support roller part 400, and is configured to slide in a state corresponding to the groove formed along the circumference of the upper support roller part 400.

That is, the upper guide part 210 may be configured to have an upper end 211, a first upper side side 212, and a second upper side side 213. The lower portion of the first upper side portion 212 is configured to be connected to the upper portion of the middle guide portion 230 to be described later.

The lower guide part 220 is formed to be seated on the circumferential surface of the lower support roller part 500, and is configured to slide while seated in a recess formed along the circumference of the lower support roller part 500.

That is, the lower guide portion 220 may be configured to have a lower portion 221, a first lower side side portion 222, and a second lower side side portion 223. The upper portion of the first lower side side portion 222 is configured to be connected to the lower portion of the middle guide portion 230 to be described later.

The guide rail part 200 according to an embodiment of the present invention may further include a stop guide part 230 connecting the upper guide part 210 and the lower guide part 220. The middle guide part 230 is formed to be spaced apart from the rack roller part 300 inserted into the guide rail part 200 at a predetermined interval, and the guide rail part 200 and the rack roller part 300 ) It is possible to form a hollow space (A) between.

According to one embodiment, any one of the upper guide part 210 and the lower guide part 220 is characterized in forming a space part B between the rack roller part 300.

More specifically, when the space portion B is formed between the lower guide portion 220 and the rack roller portion 300, a first lower side side portion connecting the lower portion 221 and the lower portion of the middle guide portion 230 The 222 may be formed to be inclined, and accordingly, an angle formed by the lower end 221 and the first lower side side 222 may be configured to form an obtuse angle. In addition, when the space portion B is formed between the upper guide portion 210 and the rack roller portion 300, the first upper side side portion 212 connecting the upper portion of the upper portion 211 and the middle guide portion 230 ) May be formed to be inclined, and accordingly, an angle formed by the upper end 211 and the first upper side side 212 may be configured to form an obtuse angle.

In the conventional case, the width of the upper guide part 210 and the lower guide part 220 and the width of the rack roller part 300 are formed to substantially correspond to each other, so that the rack roller part 300 moves in the left and right width directions during the operation process. Since this is not smooth, the sliding operability is deteriorated, and there is no space in the guide rail part 200 to accommodate the twisting of the rack roller part, so there is a problem in that the operation sensitivity is deteriorated during sliding.

Accordingly, any one of the upper guide part 210 and the lower guide part 220 according to the present invention forms a space part B between the rack roller part 300, As the movement in the left and right width directions is more smoothly absorbed and twisting of the rack roller unit 300 is easily accommodated, operability of the rail device 1000 for a dishwasher may be improved.

Hereinafter, a detailed operation method and function of the dishwasher rail device 1000 according to an embodiment of the present invention based on the above structure will be described in detail with reference to FIG. 2.

In a state in which the sliding basket is inserted into the dishwasher, one side (300a) of the rack roller part contacts the front locking part 240, and one side (400b) of the upper support roller part is connected to the rear locking part 250. It is located so as to contact the locking part. Thereafter, the sliding basket is slid in the withdrawal direction by the user's manipulation.

Thereafter, the guide body portion 100 integrally coupled with the sliding basket moves in the withdrawal direction together, and the front locking portion 240 from the rear locking portion 250 side by the guidance of the guide rail portion 200. It slides toward the) side. Thereafter, the other side 400a of the upper support roller part contacts the locking part of the front locking part 240, so that the guide body part 100 and the guide rail part 200 are restrained.

Thereafter, the guide rail part 200 moves in the withdrawal direction integrally with the sliding basket by the guide body part 100, and the other side 300b of the rack roller part inserted into the rail of the guide rail part 200 ) Is brought close to the rear locking part 250 side. Thereafter, when the other side 300b of the rack roller collides with the rear locking part 250, the sliding of the sliding basket is stopped, thereby preventing the sliding basket from being separated from the dishwasher.

However, the sliding order of the guide body part 100 and the guide rail part 200 in the withdrawal process of the sliding basket is not limited as described above, and such a sliding order is a specific design of a dishwasher to which the present invention is applied. It can be made variously depending on the structure or the degree of pulling when the user withdraws. For example, the guide body portion 100 and the guide rail portion 200 may slide simultaneously from the initial withdrawal, or after the guide rail portion 200 first starts sliding, the guide body portion 100 Can be sliding.

On the other hand, if the drainage function of the dishwasher rail device 1000 is not smooth during the withdrawal process of the sliding basket as described above, a large amount of water used for washing dishes in the dishwasher cannot be drained as described above. Water may flow to the outside due to the opening, and in addition, foreign matters generated during the dishwashing process may be caught in the dishwasher rail device, causing frequent problems such as malfunctions.

In this case, a plurality of drain holes 224 may be formed in the lower guide part 220 according to an embodiment of the present invention. More specifically, a plurality of the drainage holes 224 are formed at a predetermined interval in the second lower end 221 of the lower guide part 220, or are constant at the second lower side side part 223 of the lower guide part 220. A plurality may be formed at intervals. Accordingly, in addition to the above-described front drainage structure 241 and the rear drainage structure 251, water inside and outside the guide rail part 200 can be discharged smoothly, and foreign matter inside the dishwasher is not caught. It can be discharged immediately in the state.

In addition, since a hollow open space (A) is formed between the interruption guide part 230 and the rack roller part 300 according to an embodiment of the present invention, a more smooth drainage function and a foreign matter discharge function can be provided. have.

6A and 6B are a cross-sectional view of a rack roller unit and a perspective view of a rack coupling unit according to an embodiment of the present invention, respectively.

As shown in FIG. 6, the rack roller unit 300 according to an embodiment of the present invention may include a rack roller body unit 310, a rack member unit 320, and a rack coupling unit 330.

The rack roller body part 310 is inserted into the guide rail part 200 and guides the sliding of the guide rail part 200. The rack roller body 310 has a shape corresponding to the inner surface of the upper guide part 210 and the lower guide part 220, and the inside of the rack roller body part 310 is coupled to the rack coupling part 330 along a central axis. It can be formed through.

One side of the rack member part 320 is fixedly coupled to the inner wall of the dishwasher body and supports a load. More specifically, the rack member portion 320 according to an embodiment of the present invention has a bent shape in which a central portion protrudes from an outer portion to a predetermined height, and the rack coupling portion 330 is coupled through the central portion. In this case, the outer portion of the rack member portion 320 may be coupled to the inner wall of the dishwasher body. However, the shape of the rack member 320 is not limited to the above-described bending shape, and it is natural that various shapes may be applied.

The rack coupling part 330 is partially formed inside the rack roller body part 310, and penetrates the central axis of the rack roller body part 310 and the center of the rack member part 320, and the rack The roller body 310 and the rack member 320 are coupled. At this time, the rack coupling part 330 is spaced apart from the rack roller body part 310 and the rack member part 320 so that the rack roller part 300 can be moved by a predetermined distance in the left and right direction. It characterized in that it is combined with.

That is, as shown in Fig. 6, the rack roller unit 300 is spaced apart from the rack coupling unit 330 and the rack roller body unit 310 so as to form a predetermined width that can move in the left and right direction, the rack The roller unit 300 may absorb a movement or impact in the left and right directions from the sliding basket.

To this end, it is preferable that the rack coupling portion 330 is formed such that a cross-sectional area of a portion penetrating the rack roller body portion 310 is larger than a cross-sectional area of a portion penetrating the rack member portion 320.

The rack roller unit 300 according to an embodiment of the present invention is characterized in that it further includes a rack bearing unit 340.

The rack bearing part 340 is disposed in a space between the inner circumferential surface of the rack roller body part 310 and the outer circumferential surface of the rack coupling part 330 along the outer circumferential surface of the rack coupling part 330. The rack bearing unit 340 may absorb a movement or impact in the left and right directions of the sliding basket in the bearing itself.

To the same effect, the inner circumferential surfaces of the rack bearing unit 340 and the rack roller body unit 310 according to an embodiment of the present invention are spaced apart so that the rack roller unit 300 can be moved by a predetermined distance in the left and right directions. It is characterized in that it is formed.

Meanwhile, according to an embodiment, a track portion 331 on which the rack bearing portion 340 can be seated may be provided on an outer circumferential surface of the rack coupling portion 330.

The rack bearing part 340 can stably perform a bearing role by making point contact with the inner circumferential surface of the rack roller body part 310 in a state seated on the track part 331, and accordingly, even if there is no separate retainer member The operability of the rack roller unit 300 may be improved, and manufacturing cost may be reduced by reducing the number of parts.

In addition, as the track portion 331 is formed only on the outer circumferential surface of the rack coupling portion 330, and the inner circumferential surface of the rack roller body portion 310 is formed flat, the rack bearing portion 340 is the track portion 331 It can prevent deterioration of operability due to jamming.

7A and 7B are cross-sectional views of an upper support roller part and a perspective view of a first roller coupling part according to an embodiment of the present invention, respectively.

As shown in FIG. 7, the upper support roller part 400 according to an embodiment of the present invention may include a first roller frame part 410 and a first roller coupling part 420.

The first roller frame part 410 has a groove part corresponding to the shape of the upper guide part 210 formed along the circumferential direction on the outer circumferential surface, and can be rotated about a central axis to slide along the guide rail part 200. do.

Part of the first roller coupling part 420 is accommodated in the first roller frame part 410, and penetrates the central axis of the first roller frame part 410 and one side of the guide body part 100 Thus, the first roller frame portion 410 and the guide body portion 100 are coupled. In addition, the first roller coupling portion 420 serves as a rotation axis of the first roller frame portion 410.

At this time, the first roller coupling part 420 may be configured to connect the first roller frame part 410 and the guide body part 100 so that the upper support roller part 400 can be moved by a predetermined distance in the left and right direction. It is characterized by combining in a spaced state.

That is, by separating the guide body part 100 from the first roller frame part 410 so as to form a predetermined width in which the upper support roller part 400 can move in the left and right direction as shown in FIG. The upper support roller part 400 may absorb a horizontal movement or impact from the sliding basket.

For this purpose, it is preferable that the first roller coupling portion 420 is formed so that the cross-sectional area of the portion penetrating the first roller frame portion 410 is larger than the cross-sectional area of the portion penetrating one side of the guide body portion 100. will be.

The upper support roller part 400 according to an embodiment of the present invention is characterized in that it further includes a first bearing part 430.

The first bearing part 430 is in a space between the inner circumferential surface of the first roller frame part 410 and the outer circumferential surface of the first roller coupling part 420, along the outer circumferential surface of the first roller coupling part 420. It is arranged in more than one. In this case, the first bearing part 430 may absorb a movement or impact in the left and right directions of the sliding basket in the bearing itself.

To the same effect, the inner circumferential surfaces of the first bearing part 430 and the first roller frame part 410 according to an embodiment of the present invention may move the upper support roller part 400 by a predetermined distance in the left and right directions. It is characterized in that it is formed to be spaced apart.

Meanwhile, according to an embodiment, a first track part 421 on which the first bearing part 430 can be seated may be provided on an outer circumferential surface of the first roller coupling part 420.

The first bearing part 430 can stably perform a bearing role by making point contact with the inner circumferential surface of the first roller frame part 410 in a state seated on the first track part 421. Even if there is no retainer member, the operability of the upper support roller part 400 may be improved, and the number of parts may be reduced, so that manufacturing cost may be saved.

In addition, as the first track part 421 is formed only on the outer circumferential surface of the first roller coupling part 420 and the inner circumferential surface of the first roller frame part 410 is formed flat, the first bearing part 430 It is possible to prevent deterioration of operability by being caught in the first track part 421.

8A and 8B are cross-sectional views of a lower support roller part and a perspective view of a second roller coupling part according to an embodiment of the present invention, respectively.

As shown in FIG. 8, the lower support roller part 500 according to an embodiment of the present invention may include a second roller frame part 510 and a second roller coupling part 520.

The second roller frame part 510 has a groove part corresponding to the shape of the lower guide part 220 formed along the circumferential direction on the outer circumferential surface, and can be rotated about a central axis to slide along the guide rail part 200. do.

Meanwhile, the second roller frame part 510 may be formed so that an outer circumferential surface thereof corresponds to the lower guide part 220 along the circumferential direction, but the outer circumferential surface of the second roller frame part 510 is formed to have an open, open-type groove part.

Part of the second roller coupling part 520 is accommodated inside the second roller frame part 510 and penetrates the central axis of the second roller frame part 510 and one side of the guide body part 100 Thus, the second roller frame portion 510 and the guide body portion 100 are coupled. In addition, the second roller coupling portion 520 serves as a rotation axis of the second roller frame portion 510.

At this time, the second roller coupling part 520 may connect the second roller frame part 510 and the guide body part 100 so that the lower support roller part 500 can be moved by a predetermined distance in the left and right direction. It is characterized by combining in a spaced state.

That is, by separating the guide body part 100 and the second roller frame part 510 to form a predetermined width in which the lower support roller part 500 can move in the left and right direction as shown in FIG. 8, The lower support roller part 500 may absorb a horizontal movement or impact from the sliding basket.

For this purpose, it is preferable that the second roller coupling portion 520 is formed such that the cross-sectional area of the portion penetrating the second roller frame portion 510 is larger than the cross-sectional area of the portion penetrating one side of the guide body portion 100. will be.

The lower support roller part 500 according to an embodiment of the present invention is characterized in that it further includes a second bearing part 530.

The second bearing part 530 is formed in a space between the inner circumferential surface of the second roller frame part 510 and the outer circumferential surface of the second roller coupling part 520, along the outer circumferential surface of the second roller coupling part 520. It is placed above. The second bearing part 530 may absorb a movement or impact in the left and right directions of the sliding basket in the bearing itself.

To the same effect, the inner circumferential surfaces of the second bearing part 530 and the second roller frame part 510 according to an embodiment of the present invention are to be moved by a predetermined distance in the left and right direction. It is characterized in that it is formed to be spaced apart from each other.

Meanwhile, according to an embodiment, a second track part 521 on which the second bearing part 530 can be seated may be provided on an outer circumferential surface of the second roller coupling part 520.

The second bearing part 530 may contact the inner circumferential surface of the second roller frame part 510 in a state seated on the second track part 521 and stably perform a bearing role. Even if there is no retainer member, operability of the lower support roller part 500 may be improved, and manufacturing cost may be reduced by reducing the number of parts.

In addition, as the second track part 521 is formed only on the outer circumferential surface of the second roller coupling part 520 and the inner circumferential surface of the second roller frame part 510 is formed flat, the second bearing part 530 It is possible to prevent deterioration of operability by being caught in the second track part 521.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

1000 dishwasher rail device
100 Guide body
200 part of guide rail
210 upper guide
220 Lower guide part
230 Interruption guide section
240 front locking part
250 rear hook
300 rack roller section
310 Rack roller body
320 Rack member
330 rack joint
331 Orbit
340 rack bearings
400 upper support roller
410 first roller frame
420 first roller coupling part
421 1st Orbit
430 first bearing part
500 Lower support roller part
510 Second roller frame part
520 Second roller coupling part
521 Second Orbit
530 2nd bearing part

Claims (15)

Guide body;
An upper support roller part coupled to one side of the guide body part and rotatable about a central axis;
A lower support roller part coupled to one side of the guide body part and rotatable about a central axis;
A guide rail part having one side inserted into the space between the upper support roller part and the lower support roller part and extending along a sliding direction; And
One side is inserted into the guide rail portion, the other side includes a rack roller portion coupled to one surface inside the dishwasher body or coupled to a sliding basket,
The guide rail part includes an upper guide part having a shape corresponding to the circumference of the upper support roller part and a lower guide part having a shape corresponding to the circumference of the lower support roller part,
Any one of the upper guide part and the lower guide part forms a space part B between the rack roller part. The method of claim 1,
The guide rail part further comprises a middle guide part connecting the upper guide part and the lower guide part,
The middle guide part is formed to be spaced apart from the rack roller part inserted into the guide rail part at a predetermined interval, and forms a hollow space (A) between the guide rail part and the rack roller part. Rail device for dishwasher. The method of claim 2,
The upper guide portion is configured to have an upper portion, a first upper side portion bent at one end of the upper portion, and a second upper side portion bent at the other end of the upper portion, and the lower portion of the first upper side portion is connected to the upper portion of the middle guide portion. And
The lower guide portion is configured to have a lower portion, a first lower side portion bent at one end of the lower portion, and a second lower side side portion bent at the other end of the lower portion, and the upper portion of the first lower side portion is connected to the lower portion of the middle guide portion. And
The space portion (B) is a dishwasher rail device, characterized in that formed between any one of the first upper side and the first lower side side and the rack roller portion. The method of claim 1,
The rack roller part,
A rack roller body that is inserted into the guide rail and is rotatable about a central axis;
A rack member portion fixedly coupled to an inner surface of the dishwasher body; And
It includes a rack coupling portion coupled through the center of the rack roller body portion and one side of the rack member portion,
The rack coupling unit is a dishwasher rail device, characterized in that the rack roller unit is coupled to the rack member in a spaced state so that the rack roller unit can be moved by a predetermined distance in the left and right direction. The method of claim 4,
The rack roller part,
And a rack bearing unit having at least one bearing disposed in a space between an inner circumferential surface of the rack roller body unit and an outer circumferential surface of the rack coupling unit. The method of claim 5,
And the rack bearing part is spaced apart from the inner circumferential surface of the rack roller body part so that the rack roller part can be moved by a predetermined distance in the left-right direction. The method of claim 6,
A rail device for a dishwasher, characterized in that a track part on which the rack bearing part can be seated is provided on an outer circumferential surface of the rack coupling part. The method of claim 1,
The upper support roller part,
A first roller frame portion rotatable about a central axis, and having a circumferential surface corresponding to the upper guide portion; And
And a first roller coupling portion coupled through the center of the first roller frame portion and one side of the guide body portion,
And the first roller coupling part couples the first roller frame part and the guide body part in a spaced state so that the upper support roller part can be moved by a predetermined distance in the left-right direction. The method of claim 8,
The upper support roller part,
And a first bearing unit having at least one bearing disposed in a space between an inner circumferential surface of the first roller frame unit and an outer circumferential surface of the first roller coupling unit. The method of claim 9,
And the first bearing part is spaced apart from the inner circumferential surface of the first roller frame part so that the upper support roller part can be moved by a predetermined distance in the left-right direction. The method of claim 10,
A rail device for a dishwasher, characterized in that a first track part on which the first bearing part can be seated is provided on an outer circumferential surface of the first roller coupling part. The method of claim 1,
The lower support roller part,
A second roller frame portion rotatable about a central axis, and having a circumferential surface corresponding to the lower guide portion; And
And a second roller coupling portion coupled through the center of the second roller frame portion and one side of the guide body portion,
And the second roller coupling part couples the second roller frame part and the guide body part in a spaced state so that the lower support roller part can be moved by a predetermined distance in the left-right direction. The method of claim 12,
The lower support roller part,
And a second bearing unit having at least one bearing disposed in a space between an inner circumferential surface of the second roller frame unit and an outer circumferential surface of the second roller coupling unit. The method of claim 13,
The second bearing part is spaced apart from the inner circumferential surface of the second roller frame part so that the lower support roller part can be moved by a predetermined distance in the left-right direction. The method of claim 14,
A rail device for a dishwasher, characterized in that a second track part on which the second bearing part can be seated is provided on an outer circumferential surface of the second roller coupling part.

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