Slide device

Abstract

An embodiment of the present invention provides a slide device comprising: a first rail; an intermediate rail having a first body portion formed on the upper side thereof, a second body portion formed on the lower side thereof, and a connection portion formed between the first body portion and the second body portion; a second rail; a first retainer provided between the inner surface of the first rail and the first body portion and having a plurality of first balls in rolling contact with each of the first rail and the first body portion; a second retainer provided between the inner surface of the second rail and the second body portion and having a plurality of second balls in rolling contact with each of the second rail and the second body portion; and a pinion gear coupled to the connection portion of the intermediate rail, wherein the pinion gear is configured to be engaged with a first rack gear formed in the first retainer and a second rack gear formed in the second retainer.

Description

Slide device

[0001] The present invention relates to a slide device.

[0002] In general, a sliding type storage unit is installed in the main body of a furniture, refrigerator, or various organizers in a sliding manner so that it can be opened and closed, and is used to store necessary items.

[0003] A sliding type storage body like this is installed on the inner wall of the installation space of the main body and on both sides of the storage body, and the opening and closing operation is performed by a sliding device that slides through mutual rolling contact.

[0004] These slide devices usually include an inner rail, a middle rail, and an outer rail, with the middle rail being inserted into the inner side of the outer rail and the inner rail being accommodated inside the middle rail.

[0005] And a first retainer that makes cloud contact is provided between the inner rail and the middle rail, and a second retainer that makes cloud contact is provided between the middle rail and the outer rail.

[0006] In this conventional slide device, when a user withdraws an inserted storage object, the middle rail is withdrawn from the outer rail while being supported by the second retainer, and the inner rail is withdrawn from the middle rail while being supported by the first retainer.

[0007] However, in this type of slide device structure, a caulking phenomenon may occur between the retainer and the rail, and if this caulking phenomenon occurs, there is a problem in that the slide device cannot move smoothly. In addition, noise may be generated due to collision between each component.

[0008] Prior art literature

[0009] (Patent Document 1) Korean Patent Publication No. 10-1617352 (April 26, 2016)

[0010] The present invention is intended to solve the problems of the prior art described above, and an object of the present invention is to provide a slide device that enables smooth entry and exit by implementing synchronization between each rail constituting the slide device and prevents collision between each component.

[0011] In order to achieve the above object, one aspect of the present invention provides a slide device including a first rail, an intermediate rail having a first body portion formed on an upper side and a second body portion formed on a lower side, and a connecting portion formed between the first body portion and the second body portion, a second rail, a first retainer provided between an inner surface of the first rail and the first body portion and having a plurality of first balls each in rolling contact with the first rail and the first body portion, a second retainer provided between an inner surface of the second rail and the second body portion and having a plurality of second balls each in rolling contact with the second rail and the second body portion, and a pinion gear coupled to the connecting portion of the intermediate rail, wherein the pinion gear is configured to mesh with a first rack gear formed on the first retainer and a second rack gear formed on the second retainer.

[0012] In one embodiment of the present invention, the slide device may be characterized in that the distance (L6) between the balls arranged at both ends of the second retainer among the plurality of second balls is greater than the distance (L5) between the balls arranged at both ends of the first retainer among the plurality of first balls.

[0013] In one embodiment of the present invention, the slide device may be characterized in that the width (L4) of the second body part of the intermediate rail is formed to be larger than the width (L3) of the first body part of the intermediate rail.

[0014] In one embodiment of the present invention, the slide device may be characterized in that, when viewed in cross-section of the first retainer, the plurality of first balls are arranged in a trapezoidal shape, and when viewed in cross-section of the second retainer, the plurality of second balls are arranged in an inverse trapezoidal shape.

[0015] In one embodiment of the present invention, the slide device may be characterized in that two or more rows of first raceways in which the first ball makes rolling contact are formed on the upper side of the first body part, a first lateral raceway and a second lateral raceway in which the first ball makes rolling contact are formed on the lower sides of both sides, a second raceway in which the second ball makes rolling contact are formed on the lower side of the second body part, and a third lateral raceway and a fourth lateral raceway in which the second ball makes rolling contact are formed on the upper sides of both sides, respectively.

[0016] In one embodiment of the present invention, the first rail may be a slide device characterized in that it includes an upper portion having two or more rows of first guide grooves formed at positions corresponding to the first raceway, a first side portion connected downwardly at one end of the upper portion and having a first lateral guide groove formed at a position corresponding to the first lateral raceway, and a second side portion connected downwardly at the other end of the upper portion and having a second lateral guide groove formed at a position corresponding to the second lateral raceway, and the second rail includes a lower portion having two or more rows of second guide grooves formed at positions corresponding to the second raceway, a third side portion connected upwardly at one end of the lower portion and having a third lateral guide groove formed at a position corresponding to the third lateral raceway, and a fourth side portion connected upwardly at the other end of the lower portion and having a fourth lateral guide groove formed at a position corresponding to the fourth lateral raceway.

[0017] In one embodiment of the present invention, the slide device may be characterized in that the width (L2) of the second rail is formed to be larger than the width (L1) of the first rail.

[0018] In one embodiment of the present invention, the slide device may be characterized in that the upper and lower positions of the second side and the fourth side are identical and the upper and lower positions of the first side and the third side are not identical, or the upper and lower positions of the second side and the fourth side are not identical and the upper and lower positions of the first side and the third side are identical.

[0019] In one embodiment of the present invention, the slide device may be characterized in that the width (L2) of the second rail is formed to be the same as the width (L1) of the first rail.

[0020] In one embodiment of the present invention, the slide device may be characterized in that the upper and lower positions of the first side and the third side are identical, and the upper and lower positions of the second side and the fourth side are identical.

[0021] In one embodiment of the present invention, the slide device may be characterized in that the first raceway of the first rail and the second raceway of the second rail are each formed in two rows.

[0022] In one embodiment of the present invention, the slide device may be characterized in that the contact area between the plurality of second balls and the second rail is larger than the contact area between the plurality of first balls and the first rail.

[0023] In one embodiment of the present invention, the slide device may be characterized in that at least one of the first rail, the second rail, and the intermediate rail is made of aluminum.

[0024] According to one aspect of the present invention, the pinion gear fixedly installed on the intermediate rail meshes with the first rack gear provided on the first retainer and the second rack gear provided on the second retainer, so that the first rail, the first retainer, the intermediate rail, the second retainer, and the second rail can be synchronized. In this way, the slide device configured to synchronize the operation of each component can prevent caulking during insertion and withdrawal, thereby enabling smooth movement.

[0025] In addition, by forming the contact area between the second rail and the plurality of second balls, which support the entire load at the lowest part of the slide device, to be larger than the contact area between the first rail and the plurality of first balls, and forming the arrangement length of the plurality of second balls to be larger than the arrangement length of the plurality of first balls, the load applied to the first rail can be efficiently distributed to the second rail, thereby supporting the load more stably.

[0026] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0027] Figure 1 is a perspective view of a slide device according to one embodiment of the present invention.

[0028] Figure 2 is an operating state diagram of a slide device according to one embodiment of the present invention.

[0029] Figure 3 is an exploded perspective view of the upper side of a slide device according to one embodiment of the present invention.

[0030] Figure 4 is a lower exploded perspective view of a slide device according to one embodiment of the present invention.

[0031] Figure 5 is a front view of a slide device according to one embodiment of the present invention.

[0032] Figure 6 is a front exploded view of a slide device according to one embodiment of the present invention.

[0033] Figure 7 is a perspective view of a first rail according to one embodiment of the present invention.

[0034] Figure 8 is a perspective view of a second rail according to one embodiment of the present invention.

[0035] Figure 9 is a perspective view of an intermediate rail according to one embodiment of the present invention.

[0036] Figure 10 is a perspective view of a first retainer according to one embodiment of the present invention.

[0037] FIG. 11 is a perspective view of a second retainer according to one embodiment of the present invention.

[0038] Figure 12 is a front view of a slide device according to another embodiment of the present invention.

[0039] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0040] Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with other elements intervening. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that the other components may be included, unless otherwise specifically stated.

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0042] FIG. 1 is a perspective view of a slide device according to an embodiment of the present invention, FIG. 2 is an operating state diagram of a slide device according to an embodiment of the present invention, FIG. 3 is an upper exploded perspective view of a slide device according to an embodiment of the present invention, FIG. 4 is a lower exploded perspective view of a slide device according to an embodiment of the present invention, FIG. 5 is a front view of a slide device according to an embodiment of the present invention, FIG. 6 is a front exploded view of a slide device according to an embodiment of the present invention, FIG. 7 is a perspective view of a first rail according to an embodiment of the present invention, FIG. 8 is a perspective view of a second rail according to an embodiment of the present invention, FIG. 9 is a perspective view of an intermediate rail according to an embodiment of the present invention, FIG. 10 is a perspective view of a first retainer according to an embodiment of the present invention, and FIG. 11 is a perspective view of a second retainer according to an embodiment of the present invention.

[0043] A slide device (1000) according to one embodiment of the present invention will be described as an example in which a first rail (100) and a second rail (200) are arranged upper and lower, and an intermediate rail (300) is arranged between the first rail (100) and the second rail (200).

[0044] The slide device (1000) according to one embodiment of the present invention does not necessarily have to be used vertically, and can of course also be used horizontally. In other words, the slide device (1000) can be used in various forms depending on installation conditions.

[0045] As illustrated in FIGS. 1 to 11, the slide device (1000) may include a first rail (100), a second rail (200), an intermediate rail (300), a first retainer (400), a second retainer (500), and a pinion gear (600).

[0046] The slide device (1000) can be mounted on various components that require insertion and withdrawal. For example, the slide device (1000) can be attached to a storage body provided in a dishwasher, refrigerator, vehicle, etc., and used to insert the storage body into the body or withdraw it from the body.

[0047] Meanwhile, the first rail (100), the second rail (200), and the intermediate rail (300) may be made of a metal material, and preferably, at least one of the first rail (100), the second rail (200), and the intermediate rail (300) may be made of aluminum material to reduce weight.

[0048] In the present invention, a configuration in which the second rail (200) is mounted and fixed inside the main body and the first rail (100) is coupled to the storage body will be described as an example. Here, it is of course possible for the second rail (200) to be mounted and fixed inside the main body and the first rail (100) to be coupled to the storage body.

[0049] A storage body is connected to the first rail (100), and when a user inserts or withdraws the storage body, the first rail (100) can move along the longitudinal direction of the intermediate rail (300). In addition, the intermediate rail (300) can move along the longitudinal direction of the second rail (200).

[0050] A first receiving space (101) may be formed in the first rail (100). A first retainer (400) may be received in the first receiving space (101). A plurality of first balls (410) provided in the first retainer (400) may be in rolling contact with the inner surface of the first rail (100).

[0051] The first retainer (400) may be provided between the first rail (100) and the intermediate rail (300). With the first retainer (400) provided, when the first rail (100) is introduced or withdrawn, the first rail (100) can move smoothly along the intermediate rail (300).

[0052] The first retainer (400) may include a first ball (410) and a first rack gear (420). A plurality of ball insertion holes are formed in the first retainer (400), and a plurality of first balls (410) may be inserted into the ball insertion holes. Here, the ball insertion holes may prevent the first balls (410) from being dislodged and at the same time support them so that they can rotate.

[0053] The first ball (410) can be in cloud contact with the inner surface of the first rail (100) and the outer surface of the middle rail (300), respectively. With the first ball (410) provided, when the first rail (100) is introduced or withdrawn, the first rail (100) can move smoothly along the middle rail (300).

[0054] In the process of the first rail (100) moving smoothly along the middle rail (300), the first retainer (400) can move together along the moving direction of the first rail (100). This first retainer (400) can be moved by the rotation of the first ball (410). At this time, the moving distance of the first retainer (400) can be shorter than the moving distance of the first rail (100), and the moving speed of the first retainer (400) can be slower than the moving speed of the first rail (100).

[0055] Meanwhile, a first rack gear (420) may be provided on the lower side of the first retainer (400). The first rack gear (420) may be configured to mesh with a pinion gear (600) fixedly installed on the intermediate rail (300). The first rack gear (420) may be formed to have a length that meshes with the pinion gear (600) during the entire process of the slide device (1000) being introduced or withdrawn.

[0056] A second receiving space (201) may be formed in the second rail (200). A second retainer (500) may be received in the second receiving space (201). A plurality of second balls (510) provided in the second retainer (500) may be in cloud contact with the inner surface of the second rail (200).

[0057] A second retainer (500) may be provided between the second rail (200) and the intermediate rail (300). With the second retainer (500) provided, when the first rail (100) is introduced or withdrawn, the intermediate rail (300) can move smoothly along the second rail (200).

[0058] The second retainer (500) may include a second ball (510) and a second rack gear (520). A plurality of ball insertion holes are formed in the second retainer (500), and a plurality of second balls (510) may be inserted into the ball insertion holes. Here, the ball insertion holes may prevent the second balls (510) from being dislodged and at the same time support them so that they can rotate.

[0059] The second ball (510) can be in cloud contact with the inner surface of the second rail (200) and the outer surface of the middle rail (300), respectively. With the second ball (510) provided, the middle rail (300) can move smoothly along the second rail (200) when the first rail (100) is introduced or withdrawn.

[0060] Meanwhile, a second rack gear (520) may be provided on the upper side of the second retainer (500). The second rack gear (520) may be configured to mesh with a pinion gear (600) fixedly installed on the intermediate rail (300). The second rack gear (520) may be formed to have a length that meshes with the pinion gear (600) during the entire process of the slide device (1000) being introduced or withdrawn.

[0061] The second retainer (500) having the second rack gear (520) meshed with the pinion gear (600) moves in the opposite direction to the movement direction of the first rail (100) when the first rail (100) moves. Here, the second retainer (500) moving in the opposite direction to the movement direction of the first rail (100) does not transmit the power transmitted to the second retainer (500) to the second rail (200) fixedly mounted on the main body, but transmits it to the intermediate rail (300).

[0062] In other words, since the second rail (200) is fixedly mounted inside the main body, the power transmitted to the second retainer (500) can be transmitted to the intermediate rail (300) rather than the second rail (200). Accordingly, the intermediate rail (300) moves together with the first rail (100) along the movement direction of the first rail (100). At this time, the movement speed and distance of the intermediate rail (300) can be about half of those of the first rail (100).

[0063] When the slide device (1000) in the inlet state is withdrawn, the intermediate rail (300) and the first rail (100) slide together in the withdrawal direction based on the second rail (200) fixedly mounted inside the main body, and thus the slide device (1000) can be withdrawn.

[0064] Since the slide device (1000) of this type operates simultaneously with the first rail (100), the first retainer (400), the intermediate rail (300), the second retainer (500), and the pinion gear (600), the sliding operation of the slide device (1000) can be synchronized. Accordingly, not only can the caulking phenomenon be prevented during the insertion or withdrawal process of the slide device (1000), but also collision between the respective components can be prevented.

[0065] Meanwhile, an intermediate rail (300) may be provided between the first rail (100) and the second rail (300).

[0066] The intermediate rail (300) may include a first body part (310), a second body part (320), and a connecting part (330).

[0067] The first body part (310) is accommodated in the first receiving space part (101) of the first rail (100), and may be formed such that the width in the left-right direction is longer than the height in the up-down direction. A raceway may be formed in which the first ball (410) of the first retainer (400) makes cloud contact. This raceway may be formed to be recessed to correspond to the first ball (410).

[0068] More specifically, two or more rows of first raceways (311) in which the first balls (410) come into cloud contact may be formed on the upper side of the first body part (310), and first lateral raceways (312) and second lateral raceways (313) in which the first balls (410) come into cloud contact may be formed on the lower sides of both sides of the first body part (310), respectively. That is, the first balls (410) may be arranged in a trapezoidal shape with respect to the first body part (310).

[0069] In other words, when the cross-section of the first retainer (400) equipped with the first ball (410) is viewed, the plurality of first balls (410) can be arranged in a trapezoidal shape.

[0070] A first retainer (400) is arranged between the first rail (100) and the middle rail (300), and the first balls (410) provided in the first retainer (400) are arranged in two or more rows of the first raceway (311), the first lateral raceway (312), and the second lateral raceway (313), so that cloud contact can be made in each raceway.

[0071] In this way, when the first ball (410) is arranged in two or more rows of the first raceway (311), the first lateral raceway (312), and the second lateral raceway (313), the first rail (100) slides with respect to the middle rail (300), so that the occurrence of shaking of the first rail (100) can be prevented.

[0072] That is, structural stability can be improved as the first ball (410) is arranged in a trapezoidal shape so that two or more rows of first raceways (311) located on the upper side of the first body part (310) support the vertical load, and the first lateral raceways (312) and the second lateral raceways (313) located on the lower sides of each of the first body part (310) support the bending load and the lateral load.

[0073] Meanwhile, the second body part (320) is accommodated in the second accommodation space part (201) of the second rail (200), and may be formed such that the width in the left-right direction is longer than the height in the up-down direction. A raceway is formed in which the second ball (510) of the second retainer (500) makes cloud contact. This raceway may be formed to be sunken to correspond to the second ball (510).

[0074] More specifically, two or more rows of second raceways (411) in which the second balls (510) come into cloud contact may be formed on the lower side of the second body part (320), and a third lateral raceway (322) and a fourth lateral raceway (323) in which the second balls (510) come into cloud contact may be formed on the upper sides of both sides of the second body part (320), respectively. That is, the second balls (510) may be arranged in an inverted trapezoidal shape with respect to the second body part (510).

[0075] In other words, when the cross-section of the second retainer (500) equipped with the second ball (510) is viewed, a plurality of the second balls (510) can be arranged in a trapezoidal shape.

[0076] A second retainer (500) is arranged between the second rail (200) and the middle rail (300), and the second balls (510) provided in the second retainer (500) are arranged in two or more rows of the second raceway (411), the third lateral raceway (322), and the fourth lateral raceway (323), so that cloud contact can be made in each raceway.

[0077] In this way, when the second ball (510) is arranged in two or more rows of the second raceway (321), the third lateral raceway (322), and the fourth lateral raceway (323), the middle rail (300) slides with respect to the second rail (200), so that the occurrence of shaking of the middle rail (300) can be prevented.

[0078] That is, the structural stability can be improved as the second ball (510) is arranged in an inverted trapezoidal shape so that two or more rows of second raceways (321) located on the lower side of the second body part (320) support the vertical load, and the third lateral raceways (322) and the fourth lateral raceways (323) located on the upper sides of both sides of the second body part (320) support the bending load and the lateral load.

[0079] According to one embodiment, as illustrated in FIG. 5, the width (L4) of the second body portion (320) may be formed to be larger than the width (L3) of the first body portion (310). In addition, three or more rows of second raceways (321) may be formed on the lower side of the second body portion (320). That is, since the width (L4) of the second body portion (320) is larger than the width (L3) of the first body portion (310) and the second raceways (321) are formed in greater numbers than the first raceways (311), a greater vertical load can be stably supported while a smooth slide operation can be achieved.

[0080] Meanwhile, the first raceway (311) and the second raceway (321) are formed entirely along the longitudinal direction of the intermediate rail (300), and a first stopper (314) and a second stopper (324) in the form of a step that can limit the movement of the first ball (410) and the second ball (510) moving along the first raceway (311) and the second raceway (321) can be formed.

[0081] As a first stopper (314) is formed in the first raceway (311) and a second stopper (324) is formed in the second raceway (321), when the first rail (100) and the second rail (200) are pulled out to the maximum with respect to the middle rail (300), for example, the movement of the first ball (410) can be restricted by the first stopper (314), and the movement of the second ball (510) can be restricted by the second stopper (324).

[0082] According to one embodiment, the plurality of first balls and second balls (410, 510) may include balls (411, 511) positioned at opposite longitudinal ends of the retainer in which the balls are provided, and balls (412, 512) positioned at the longitudinal middle portion of the retainer in which the balls are provided. At this time, the balls (411, 511) positioned at opposite ends and the balls (412, 512) positioned at the middle portion may have the same diameter, but the balls (411, 511) positioned at opposite ends may be made of a metal material, and the balls (412, 512) positioned at the middle portion may be made of a resin material. That is, the balls positioned at opposite ends of the retainer may be made of a hard steel material, and the balls positioned at the middle portion of the retainer may be made of a softer resin material, thereby reducing rolling noise of the balls, extending the life of the balls, and being advantageous in terms of economy.

[0083] According to one embodiment, the balls (411, 511) located at both ends may be made of a metal material such as brass, bronze, aluminum or steel, or a ceramic material, and the balls (412, 512) located at the middle may be made of a resin material such as polyamide, polyoxymethylene (POM), polyethylene (PE), polypropylene (PP) or thermosetting plastics.

[0084] However, this is not limited thereto, and the balls (411, 511) located at both ends and the balls (412, 512) located at the middle may be composed of the same material. For example, the balls (411, 511) located at both ends and the balls (412, 512) located at the middle may both be composed of a resin material such as polyamide, polyoxymethylene (POM), polyethylene (PE), polypropylene (PP), or thermosetting plastics.

[0085] According to one embodiment, the contact area between the plurality of second balls (510) and the second rail (200) may be configured to be greater than the contact area between the plurality of first balls (410) and the first rail (100).

[0086] In addition, according to one embodiment, as shown in FIGS. 10 and 11, the distance (L6) between the balls (511) positioned at both longitudinal ends of the second retainer (500) among the plurality of second balls (510) may be configured to be greater than the distance (L5) between the balls (511) positioned at both longitudinal ends of the first retainer (400) among the plurality of first balls (410).

[0087] In this way, by forming the contact area between the second rail (200) and the plurality of second balls (510) that support the entire load at the lowest part of the slide device (1000) to be larger than the contact area between the first rail (100) and the plurality of first balls (410), and forming the arrangement length (L6) of the plurality of second balls (510) to be larger than the arrangement length (L5) of the plurality of first balls (410), the load applied to the first rail (100) can be efficiently distributed to the second rail (200) to support the load more stably, and the durability of the slide device (1000) can be improved.

[0088] The connecting portion (330) connects the first body portion (310) and the second body portion (320). A fixed pin fastening hole (331) may be formed in this connecting portion (330). A fixed pin (610) for penetratingly inserting a pinion gear (600) is coupled to the fixed pin fastening hole (331), so that the pinion gear (600) can be supported by the fixed pin (610). At this time, the pinion gear (600) can be supported by the fixed pin (610) so as to be rotatable.

[0089] Meanwhile, the first rail (100) includes an upper portion (110), a first side portion (120), and a second side portion (130), and the lower portion may be open.

[0090] On the inner surface of the upper portion (110), two or more rows of first guide grooves (111) can be formed at positions corresponding to the first raceway (311).

[0091] The first side (120) is connected downwardly from one end of the upper portion (110), and a first lateral guide groove (121) may be formed at a position corresponding to the first lateral raceway (312). In addition, the second side (130) is connected downwardly from the other end of the upper portion (110), and a second lateral guide groove (122) may be formed at a position corresponding to the second lateral raceway (313).

[0092] The second rail (200) includes a lower portion (210), a third side portion (220), and a fourth side portion (230), and the upper portion may be open.

[0093] On the inner surface of the lower portion (210), two or more rows of second guide grooves (211) can be formed at positions corresponding to the second raceway (321).

[0094] The third side (220) is connected upwardly from one end of the lower portion (210), and a third lateral guide groove (221) may be formed at a position corresponding to the third lateral raceway (322). In addition, the fourth side (230) is connected upwardly from the other end of the lower portion (210), and a third lateral guide groove (222) may be formed at a position corresponding to the fourth lateral raceway (323).

[0095] According to one embodiment, as illustrated in FIG. 5, the width (L2) of the second rail (200) may be formed to be larger than the width (L1) of the first rail (100). The vertical positions of the second side (130) of the first rail (100) and the fourth side (230) of the second rail (200) may be aligned, and the vertical positions of the first side (120) of the first rail (100) and the third side (220) of the second rail (200) may not be aligned. Alternatively, the vertical positions of the second side (130) of the first rail (100) and the fourth side (230) of the second rail (200) may not be aligned, and the vertical positions of the first side (120) of the first rail (100) and the third side (220) of the second rail (200) may be aligned.

[0096] That is, a step is formed so that the upper and lower positions of the first side (120) and the third side (220) do not match, or the upper and lower positions of the second side (130) and the fourth side (230) do not match, so that an entry space for a storage body fixed to the first rail (100) can be provided through the step.

[0097] According to one embodiment, the first rail (100) may further include a first fastening portion (140) extending from the upper portion (110) in one or the other direction and capable of being fastened to a counterpart, i.e., a storage body, and the second rail (200) may further include a second fastening portion (240) extending from the lower portion (210) in one or the other direction and capable of being fastened to a counterpart, i.e., a main body. One or more fastening holes may be formed in the first fastening portion (140) and the second fastening portion (240) so as to be fastened to a counterpart.

[0098] In this way, the first rail (100) and the second rail (200) of the present invention include a structure that can be fastened to a counterpart, so that a separate bracket for fastening the slide device to the counterpart is unnecessary.

[0099] Figure 12 is a front view of a slide device according to another embodiment of the present invention.

[0100] Hereinafter, the differences from the slide device (1000) according to the above-described embodiment of the present invention will be mainly explained.

[0101] Referring to FIG. 12, the slide device (1000') can be configured in a vertically symmetrical structure based on a central horizontal line.

[0102] That is, the width (L2) of the second rail (200) and the width (L1) of the first rail (100) according to another embodiment of the present invention may be formed to be the same, but the upper and lower positions of the first side (120) and the third side (220) may be identical, and the upper and lower positions of the second side (130) and the fourth side (230) may be identical.

[0103] In addition, the second raceway (321) of the second body part (320) may be formed in the same number of two or more rows as the first raceway (311) of the first body part (310), and the first fastening part (140) and the second fastening part (240) may be formed to extend in the same direction from the upper part (110) and the lower part (210), respectively.

[0104] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0105] The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0106] Description of the symbol

[0107] 1000 slide device

[0108] 100 1st rail

[0109] 110 upper

[0110] 120 First side

[0111] 130 Second side

[0112] 140 First joint

[0113] 200 Second Rail

[0114] 210 lower

[0115] 220 Third side

[0116] 230 4th side

[0117] 240 Second fastening section

[0118] 300 intermediate rail

[0119] 310 First body part

[0120] 320 Second body part

[0121] 330 connection

[0122] 400 No. 1 retainer

[0123] 410 1st ball

[0124] 420 1st rack gear

[0125] 500 Second Retainer

[0126] 510 2nd ball

[0127] 520 2nd rack gear

[0128] 600 pinion gear

[0129] 610 fixed pin

Claims

1. First rail; An intermediate rail having a first body part formed on the upper side, a second body part formed on the lower side, and a connecting part formed between the first body part and the second body part; Second rail; A first retainer provided between the inner surface of the first rail and the first body portion, and having a plurality of first balls each in cloud contact with the first rail and the first body portion; A second retainer provided between the inner surface of the second rail and the second body part, and having a plurality of second balls each in cloud contact with the second rail and the second body part; and Includes a pinion gear coupled to the connecting portion of the above intermediate rail, A slide device in which the pinion gear is configured to mesh with a first rack gear formed on the first retainer and a second rack gear formed on the second retainer.

2. In paragraph 1, A slide device, characterized in that the distance (L6) between balls positioned at both longitudinal ends of the second retainer among the plurality of second balls is greater than the distance (L5) between balls positioned at both longitudinal ends of the first retainer among the plurality of first balls.

3. In paragraph 1, A slide device, characterized in that the width (L4) of the second body part of the intermediate rail is formed to be larger than the width (L3) of the first body part of the intermediate rail.

4. In paragraph 1, A slide device, characterized in that, when viewed in cross-section of the first retainer, the plurality of first balls are arranged in a trapezoidal shape, and when viewed in cross-section of the second retainer, the plurality of second balls are arranged in an inverted trapezoidal shape.

5. In paragraph 1, On the upper side of the first body part, two or more rows of first raceways in which the first ball makes cloud contact are formed, and on the lower sides of both sides, first lateral raceways and second lateral raceways in which the first ball makes cloud contact are formed, respectively. A slide device characterized in that two or more rows of second raceways in which the second ball makes cloud contact are formed on the lower side of the second body part, and a third lateral raceway and a fourth lateral raceway in which the second ball makes cloud contact are formed on the upper sides on both sides, respectively.

6. In paragraph 5, The above first rail, An upper portion in which two or more rows of first guide grooves are formed at positions corresponding to the first raceway; A first side connected from the upper end to the lower end, and having a first lateral guide groove formed at a position corresponding to the first lateral raceway; and A second side is connected from the upper end to the lower end, and a second lateral guide groove is formed at a position corresponding to the second lateral raceway. The above second rail, A lower portion in which two or more rows of second guide grooves are formed at positions corresponding to the second raceway; A third side connected from the lower end to the upper end, and having a third lateral guide groove formed at a position corresponding to the third lateral raceway; and A slide device characterized by including a fourth side connected to the upper side from the other end of the lower side and having a fourth lateral guide groove formed at a position corresponding to the fourth lateral raceway.

7. In paragraph 6, A slide device, characterized in that the width (L2) of the second rail is formed to be larger than the width (L1) of the first rail.

8. In paragraph 7, A slide device characterized in that the upper and lower positions of the second side and the fourth side are identical and the upper and lower positions of the first side and the third side are not identical, or the upper and lower positions of the second side and the fourth side are not identical and the upper and lower positions of the first side and the third side are identical.

9. In paragraph 7, A slide device, characterized in that the first raceway of the first rail is formed in two rows, and the second raceway of the second rail is formed in three or more rows.

10. In paragraph 6, A slide device characterized in that the width (L2) of the second rail is formed to be the same as the width (L1) of the first rail.

11. In paragraph 10, A slide device, characterized in that the upper and lower positions of the first side and the third side are identical, and the upper and lower positions of the second side and the fourth side are identical.

12. In paragraph 10, A slide device, characterized in that the first raceway of the first rail and the second raceway of the second rail are each formed in two rows.

13. In paragraph 1, A slide device, characterized in that the contact area between the plurality of second balls and the second rail is larger than the contact area between the plurality of first balls and the first rail.

14. In paragraph 1, A slide device, characterized in that at least one of the first rail, the second rail, and the intermediate rail is made of aluminum.

Images