CN212465430U

CN212465430U - Sliding device

Info

Publication number: CN212465430U
Application number: CN201890001268.9U
Authority: CN
Inventors: 金基光
Original assignee: Shikesi Co ltd
Current assignee: Shikesi Co ltd; Segos Co Ltd
Priority date: 2017-10-12
Filing date: 2018-10-10
Publication date: 2021-02-05
Anticipated expiration: 2028-10-10
Also published as: KR20190041394A; KR102075759B1

Abstract

The utility model relates to a can shorten middle orbital displacement's slider when keeping moving orbital maximum displacement, slider includes: a fixed rail fixed to a main body of the insertion receiving body; a moving rail fixed to the storage body; an intermediate rail disposed between the moving rail and the fixed rail and relatively moving with respect to the moving rail and the fixed rail; and a driving means for moving the intermediate rail and moving the moving rail twice the moving distance of the intermediate rail. With this configuration, since the power transmission unit is provided, the moving distance of the intermediate rail can be shortened while maintaining the maximum moving distance of the moving rail, and therefore, the manufacturing cost of parts can be reduced, and the effect of saving energy and extending the life of the motor can be obtained by reducing the load of the motor.

Description

Sliding device

Technical Field

The present invention relates to a sliding device, and more particularly, to a sliding device provided between a main body and a container to make opening and closing operations of the container soft and smooth.

Background

A linear sliding device made of metal is arranged between the inner wall of the main body of the furniture or the household appliance and the receiving body.

The sliding device includes a plurality of rails and balls or pulleys disposed between the rails, and relative movement between the rails is smoothly performed by a rolling action of the balls or pulleys.

On the other hand, when the length of the storage body is too long, the length of the sliding device is increased, and the total weight is increased, so that a three-step rail is mainly used, in which an intermediate rail is provided between a fixed rail fastened to the main body and a moving rail fastened to the storage body, and the load during the drawer extension is stably supported while the drawer extension length is secured.

In the case of using the three-sectioned rail as described above, an automatic drawer drawing device has also been developed in which a rack is provided on the fixed rail side, a pinion gear engaged with the rack is provided on the middle rail, and the pinion gear is driven by a motor to automatically draw or push the container by driving the motor.

In the automatic drawing device, the rack is arranged on the whole length of the fixed rail, so that the middle rail is moved to the maximum extent for the fixed rail, and the drawing distance of the automatic opening of the drawer is further ensured.

In the prior art as described above, the rack and the fixing rail have the same length, and thus there is a problem in that the manufacturing cost is increased. In addition, since the motor is driven as described above so that the pinion gear travels the entire length of the long rack, the load applied to the motor is increased, and there is a problem in that energy consumption, durability, and life of the motor are reduced.

Further, when the sliding device is arranged in a three-stage structure to push and pull the storage body, the movable rail and the intermediate rail slide on the fixed rail. At this time, although the fixed rail is fastened and fixed to the main body, the moving rail and the intermediate rail may slide while shaking left and right. If the rattling phenomenon occurs, the container collides with the main body, and there occur a problem that impact noise is generated, the container or the main body is damaged, and a problem that the sliding device is damaged.

SUMMERY OF THE UTILITY MODEL

Technical problem

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a sliding device capable of shortening the moving distance of an intermediate rail while maintaining the maximum moving distance of a moving rail.

In order to solve the above-described problems, it is an object of the present invention to provide a sliding device that can prevent a moving rail and an intermediate rail from moving in a left-right direction when driven.

Technical scheme

In order to achieve the above object, a sliding apparatus according to an embodiment of the present invention includes: a fixed rail fixed to a main body of the insertion receiving body; a moving rail fixed to the storage body; an intermediate rail disposed between the moving rail and the fixed rail and relatively moving with respect to the moving rail and the fixed rail; and a driving means for moving the intermediate rail and moving the moving rail twice the moving distance of the intermediate rail.

Here, the driving tool may include: a driving unit that moves the intermediate rail; and a power transmission unit connecting the intermediate rail and the moving rail such that the moving rail moves twice the moving distance of the intermediate rail.

In more detail, the driving part may include: the rack is arranged on the fixed track; and a pinion gear rotatably provided at one side of the middle rail and engaged with the rack gear.

Here, the rack gear may further include a stopper that protrudes a gear portion formed at a position where the moving rail reaches a maximum pull-out position, and restricts the pinion from rotating in the moving rail pull-out direction.

Then, the power transmission portion may further include: a first pulley rotatably fastened to one side of the middle rail; a second pulley rotatably fastened to the other side of the middle rail; a first wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the first pulley; and a second wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the second pulley.

Here, the first pulley and the second pulley have a diameter smaller than a space between the moving rail and the fixed rail, and may be disposed between the moving rail and the fixed rail.

Alternatively, the first and second pulleys may have a diameter greater than a distance between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail.

Here, the first and second pulleys may further include a protrusion protruding to the moving rail and the fixed rail side to first contact with the moving rail and the fixed rail.

In addition, the first pulley and the second pulley may include: a first flange having a diameter smaller than a space between the moving rail and the fixed rail and disposed between the moving rail and the fixed rail; a second flange formed spaced apart from the first flange and having a diameter greater than a space between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail; and a guide groove formed between the first flange and the second flange and around which a wire is wound.

The power transmission portion of the sliding device according to another embodiment of the present invention may include: a pulley rotatably fastened to the other side of the middle rail; a first wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping a rotation shaft of the pinion; and a second wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the pulley.

Here, the pinion gear further includes a flange portion expanded in a radial direction of the rotation shaft and spaced apart from the gear portion by a predetermined pitch; the first metal wire is disposed between the gear portion and the flange portion.

Then, the flange portion may also have a diameter greater than a space between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail.

At this time, the flange portion may further include a protrusion protruding toward the moving rail and the fixed rail to first contact with the moving rail and the fixed rail.

In addition, the pinion gear may have a guide slot formed in a circumferential direction of the gear portion, and the first wire may be disposed in the guide slot.

Here, the pinion gear may further include a protrusion protruding to the moving rail and the fixed rail side to first contact with the moving rail and the fixed rail.

Further, the sliding device according to an embodiment of the present invention may further include an automatic closing tool, the automatic closing tool is automatically closed when the middle rail switch is engaged with the rotation shaft of the pinion protruding to the outside and the engagement is released.

The utility model discloses a slide device's of another embodiment driving tool can include: a driving pulley rotatably fastened to one side of the middle rail and having gear teeth formed on an outer circumferential surface thereof; a guide pulley rotatably fastened to the other side of the middle rail and having gear teeth formed on an outer circumferential surface; a belt having gear teeth formed on an inner circumferential surface thereof to be engaged with the gear teeth of the driving pulley and the guide pulley; a first fixing portion disposed on the moving rail and fastening one side of the tape positioned on the moving rail side; and a second fixing portion disposed on the fixing rail and fastening the other side of the belt located on the fixing rail side.

Advantageous effects

According to the utility model discloses a slider has power transmission portion, can shorten middle orbital displacement distance when keeping moving orbital maximum displacement distance, consequently can save the manufacturing cost of product, reduces the load of motor, and then can obtain the effect of energy-conservation and the life-span that can prolong the motor.

Then, according to the utility model discloses, prevent when the drive that removal track and middle track move with left right direction, can obtain the effect that can prevent the striking noise and prevent the damage of main part and storage body and slider.

Drawings

Fig. 1 is a perspective view schematically showing a sliding device according to a first embodiment of the present invention;

fig. 2 is a side view schematically showing a sliding apparatus according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view schematically shown by cutting the area A-A' of FIG. 1;

fig. 4 is a side view schematically showing a state where the sliding device according to the first embodiment of the present invention is pulled out by operation;

fig. 5 is a view schematically showing another embodiment of a power transmission portion in the sliding device according to the first embodiment of the present invention;

fig. 6 is a perspective view schematically showing a sliding device according to a second embodiment of the present invention;

fig. 7 is a side view schematically showing a sliding apparatus according to a second embodiment of the present invention;

FIG. 8 is a cross-sectional view schematically shown by cutting the area B-B' of FIG. 6;

fig. 9 is a side view schematically showing a state where a sliding apparatus according to a second embodiment of the present invention is pulled out by operation;

fig. 10 is a view schematically showing another embodiment of a power transmission portion of a sliding device according to a second embodiment of the present invention;

fig. 11 is a view schematically showing another embodiment of a power transmission portion of a sliding device according to a second embodiment of the present invention;

fig. 12 is a perspective view schematically showing a sliding device according to a third embodiment of the present invention;

fig. 13 is a side view schematically showing a sliding apparatus according to a third embodiment of the present invention;

FIG. 14 is a cross-sectional view schematically shown by cutting the area C-C' of FIG. 12;

fig. 15 to 19 are views schematically showing another embodiment of a pinion in a sliding apparatus according to a third embodiment of the present invention;

fig. 20 is a view schematically showing the sliding apparatus according to the first to third embodiments of the present invention, with a stopper formed on a rack removed;

fig. 21 is a view schematically showing a state where an automatic closing tool is added to a slide device according to a third embodiment of the present invention;

fig. 22 is a perspective view schematically showing a sliding device according to a fourth embodiment of the present invention;

fig. 23 is a side view schematically showing a sliding apparatus according to a fourth embodiment of the present invention;

FIG. 24 is a cross-sectional view schematically illustrated by cutting the area D-D' of FIG. 21;

fig. 25 is an exploded perspective view schematically showing a sliding apparatus according to a fourth embodiment of the present invention, with a first fixing portion removed.

Detailed Description

To assist in understanding the features of the present invention, a sliding device associated with an embodiment of the present invention will be described in detail below.

In order to facilitate understanding of the embodiments described below, when reference numerals are attached to components of respective drawings, it should be noted that the components related thereto, even if shown on other drawings, should have the same reference numerals as much as possible. In describing the present invention, if it is determined that a specific description of a related known structure or function makes the gist of the present invention unclear, a detailed description thereof will be omitted.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

Fig. 1 and 2 are a perspective view and a side view schematically showing a sliding device according to a first embodiment of the present invention; FIG. 3 is a cross-sectional view schematically shown by cutting the area A-A' of FIG. 1; fig. 4 is a side view schematically showing a state where the sliding device according to the first embodiment of the present invention is pulled out by operation; fig. 5 is a view schematically showing another embodiment of the power transmission unit in the sliding device according to the first embodiment of the present invention.

Referring to fig. 1 to 4, a sliding apparatus 100 according to a first embodiment of the present invention includes: a fixing rail 110 fixed to a main body (not shown) of an insertion receiving body (not shown); a moving rail 120 fixed to the receiving body; an intermediate rail 130; is arranged between the moving track 120 and the fixed track 110, and performs relative movement for the moving track 120 and the fixed track 110; a driving means for moving the intermediate rail 130 to move the moving rail 120 by a moving distance D of the intermediate rail₁Twice as much.

That is, as shown in fig. 4, when the slide device 100 moves the intermediate rail 130 by the driving tool, the moving rail moves by a moving distance D₂Said distance of movement D₂Is the distance D traveled by the intermediate rail₁Twice as much.

Accordingly, the length of the rack gear 140 can be shortened by half compared to the conventional art, manufacturing cost can be saved, and the driving distance of the pinion gear 150 can be shortened by half, so that a load applied to a driving motor (not shown) rotating the pinion gear 150 can be reduced, energy can be saved, and the life of the driving motor can be prolonged.

More specifically, the fixed rail 110 is fastened to the main body by a bracket 112 and positioned at the main body, and the moving rail 120 is fastened to the receiving body to guide the movement of the receiving body.

The intermediate rail 130 is disposed between the fixed rail 110 and the moving rail 120, and has a plurality of balls 131 therebetween, and further moves relative to each other.

That is, the fixed rail 110 is positioned at the main body, and when the intermediate rail 130 moves, the moving rail 120 moves corresponding thereto to pull out or push in the receiving body.

The driving means moves the intermediate rail 130, and if the intermediate rail 130 moves, the moving rail 120 moves by a moving distance D of the intermediate rail₁Twice as much.

To this end, the driving tool comprises: a driving unit for moving the intermediate rail 130; a power transmission part for connecting the middle rail 130 and the moving rail 120 and moving the moving rail 120 by a moving distance D of the middle rail₁Twice as much.

More specifically, the driving part includes a rack gear 140 and a pinion gear 150, the rack gear 140 is disposed at the fixed rail 110, the pinion gear 150 is rotatably disposed at one side of the middle rail 130, is engaged with the rack gear 140, and receives a rotational power of a driving motor to move the middle rail 130.

Here, the rack 140 is not necessarily disposed over the entire length of the fixed rail 110, but is fastened to the fixed rail 110 slightly longer than a half of the length of the fixed rail 110. Then, a fastening groove 151 is formed at the pinion gear 150, and a rotation shaft (not shown) of the driving motor is inserted and fastened to receive rotation power of the driving motor.

The power transmission unit includes: a first pulley 161 rotatably fastened to one side of the middle rail 130; a second pulley 162 rotatably fastened to the other side of the middle rail 130; a first wire 163 having one side end fastened to the moving rail 120 and the other side end fastened to the fixed rail 110 and wrapping the first pulley 161; a second wire 164 is fastened to the moving rail 120 at one side end and the fixed rail 110 at the other side end, and wraps the second pulley 162.

Here, the first fastening portion 121 is fastened to the moving rail 120, and the second fastening portion 111 is fastened to the fixed rail 110. That is, the first pulley 161 is wrapped in a state where one side end of the first wire 163 is fastened to the first fastening part 121, and then the other side end is fastened to the second fastening part 111. Then, the second pulley 162 is wrapped in a state where one side end of the second wire 164 is fastened to the first fastening portion 121, and then the other side end is fastened to the second fastening portion 111.

When the driving motor is operated to rotate the pinion gear 150 to draw out the moving rail 120 in such a structure, the pinion gear 150 moves forward along the rack 140, and the intermediate rail 130 moves forward together. Then, when the intermediate rail 130 moves, the second pulley 162 also moves, and thus the second wire 164 wound around the second pulley 162 is tightened, and the moving rail 120 also moves forward.

Here, as shown in fig. 4, the moving distance D of the moving rail, which the moving rail 120 moves, is determined by the principle of a pulley₂Is the moving distance D of the middle rail that the middle rail 130 moves₁Twice as much.

On the contrary, when the pinion gear 150 rotates in the reverse direction by operating the driving motor to introduce the moving rail 120, the pinion gear 150 moves backward along the rack 140, and the intermediate rail 130 moves backward together. Then, when the intermediate rail 130 moves, the first pulley 161 also moves, so that the first wire 163 wound around the first pulley 161 is tightened, and the moving rail 120 also moves backward.

Then, as shown in fig. 1 to 4, the first pulley 161 and the second pulley 162 may be disposed on the same side as the pinion gear 150 in the intermediate rail 130.

Alternatively, as shown in fig. 5, the first pulley 171 and the second pulley may be disposed on a different side from the pinion gear 150 in the intermediate rail 130. In this case, it is preferable to configure the shape and configuration that can minimize the size of the sliding apparatus. Fig. 5 is a sectional view showing only the first pulley 171, but the second pulley is also configured in the same shape as the first pulley 171.

Referring to fig. 5, the first pulley 171 and the second pulley have a diameter smaller than a space between the moving rail 120 and the fixed rail 110, and are disposed between the moving rail 120 and the fixed rail 110 without protruding the moving rail 120 and the fixed rail 110 to the outside.

Accordingly, the size of the sliding device can be minimized, and thus interference with other structures can also be minimized.

Fig. 6 and 7 are a perspective view and a side view schematically showing a sliding device according to a second embodiment of the present invention; FIG. 8 is a cross-sectional view schematically shown by cutting the area B-B' of FIG. 6; fig. 9 is a side view schematically showing a state where the slide device according to the second embodiment of the present invention is pulled out by operation. Fig. 10 and 11 are views schematically showing another embodiment of the power transmission portion of the slide device.

Referring to fig. 6 to 9, the sliding apparatus according to the second embodiment of the present invention is configured with the same structure as the sliding apparatus 100 according to the first embodiment described above, and the first pulley 161 and the second pulley 162 are rotatably fastened to the opposite sides in the intermediate rail 130. That is, as shown in fig. 8, the first pulley 161 and the second pulley 162 may be disposed on the opposite side of the pinion gear 150 in the intermediate rail 130. This is to prevent the first pulley 161 and the second pulley 162 from being interfered by the rack 140. Of course, the first pulley 161 and the second pulley 162 may be disposed on the same side as the pinion gear 150.

In more detail, as shown in fig. 8, the first and

second pulleys

161 and 162 have a diameter greater than a space between the moving rail 120 and the fixed rail 110 to contact the sides of the moving rail 120 and the fixed rail 110. Accordingly, the movement in the left and right directions can be restricted while the moving rail 120 and the middle rail 130 are slid.

The first pulley 161 and the second pulley 162 are disposed on the side surface of the intermediate rail 130 opposite to the surface on which the pinion gear 150 is fastened. This is because the intermediate rail 130 may interfere with the rack 140 if the same wind-side surface as the surface on which the pinion 150 is fastened is disposed. However, if a gap for disposing the first pulley 161 is formed between the fixed rail 110 and the rack 140 or the size of the rack is adjusted in order to prevent interference with each other, the first pulley 161 and the second pulley 162 may be disposed on the same side surface as the surface to which the pinion gear 150 is fastened in the intermediate rail 130.

In addition, the first and

second pulleys

161 and 162 may further include protrusions protruding toward the moving rail 120 and the fixed rail 110 to first contact the moving rail 120 and the fixed rail 110.

That is, as shown in fig. 10, a semicircular protrusion 165 protruding outward is formed on a side surface of the first pulley 161, and the protrusion 165 is in contact with the moving rail 120 and the fixed rail 110. Accordingly, the contact area with the moving rail 120 and the fixed rail 110 is minimized, and the friction force can be reduced. Only the projection 165 formed at the first pulley 161 is shown in fig. 10, but the projection may be similarly formed at the second pulley.

Further, as shown in fig. 11, the first pulley 170 includes: a first flange 171 having a diameter smaller than a space between the moving rail 120 and the fixed rail 110 and disposed between the moving rail 120 and the fixed rail 110; a second flange 172 formed spaced apart from the first flange 171 and having a diameter greater than a distance between the moving rail 120 and the fixed rail 110, and contacting sides of the moving rail 120 and the fixed rail 110; and a guide groove 173 formed between the first flange 171 and the second flange 172 and around which the first wire 163 is wound.

With this configuration, the amount of outward protrusion by the first pulley 170 can be reduced, and thus the sliding device can be minimized, and interference with other structures can also be minimized.

In fig. 11, the first pulley 170 is disposed on the side surface of the intermediate rail 130 opposite to the surface to which the pinion 150 is fastened, but the present invention is not limited thereto, and may be disposed on the same side surface of the intermediate rail 130 as the surface to which the pinion 150 is fastened. In this case, it is preferable to adjust the size of the rack gear to prevent the first pulley 170 and the rack gear 140 from interfering with each other.

In addition, only the first pulley 170 is shown in fig. 11, but the second pulley may be configured in the same shape.

Fig. 12 and 13 are a perspective view and a side view schematically showing a sliding device according to a third embodiment of the present invention; FIG. 14 is a cross-sectional view schematically shown by cutting the area C-C' of FIG. 12; fig. 15 to 19 are views schematically showing another embodiment of a pinion gear in the sliding apparatus.

In the sliding apparatus 200 according to the third embodiment of the present invention, the same reference numerals as those of the sliding apparatus 100 according to the first embodiment disclosed in fig. 1 to 4 denote the same structures, and thus detailed description thereof will be omitted. That is, the sliding apparatus 200 of the third embodiment is partially different from the sliding apparatus 100 of the first embodiment in driving tools.

Referring to fig. 12 to 14, the driving tool of the sliding apparatus 200 includes: a driving unit for moving the intermediate rail 130; and a power transmission unit connecting the intermediate rail 130 and the moving rail 120 and moving the moving rail 120 twice as long as the moving distance of the intermediate rail.

Here, the driving part includes: a rack 140 disposed at the fixed rail 110; a pinion gear 210 rotatably disposed at one side of the middle rail 130, engaged with the rack gear 140, and receiving a rotational power of a driving motor to move the middle rail 130.

Then, the power transmission portion includes: a pulley 221 rotatably fastened to the other side of the middle rail 130; a first wire 222 having one side end fastened to the moving rail 120 and the other side end fastened to the fixed rail 110 and wrapping a rotation shaft of the pinion gear 210; a second wire 223 having one side end fastened to the moving rail 120 and the other side end fastened to the fixed rail 110 and wrapping the pulley 221.

That is, the sliding apparatus 200 of the third embodiment winds the first wire 222 around the pinion 210, and only one pulley may be used.

More specifically, the first fastening portion 121 is fastened to the moving rail 120, and the second fastening portion 111 is fastened to the fixed rail 110. That is, the pinion 210 is wrapped in a state where one side end of the first wire 222 is fastened to the first fastening part 121, and then the other side end is fastened to the second fastening part 111. Then, the pulley 221 is wrapped in a state where one side end of the second wire 223 is fastened to the first fastening part 121, and then the other side end is fastened to the second fastening part 111.

For this, the pinion 210 forms a flange portion 213, and the flange portion 213 is expanded in a radial direction at the rotation shaft 211 and spaced apart from the gear portion 212 by a predetermined interval. With this structure, a groove is formed between the gear portion 212 and the flange portion 213, and the first metal wire 222 is inserted and disposed therein.

Alternatively, as shown in fig. 15, the pinion 230 may have a guide slot 233 formed in the gear portion 232 in the circumferential direction, and the first wire 222 may be inserted and disposed in the guide slot 233. With this structure, the pinion 230 is gear-fastened to the rack 140 in a state where the first wire 222 is inserted and disposed in the guide slot 233 formed at the gear part 232, and thus, the wire separation of the first wire 222 can be prevented.

Further, as shown in fig. 16, the flange portion 213 has a diameter larger than a space between the moving rail 120 and the fixed rail 110 to contact sides of the moving rail 120 and the fixed rail 110. Accordingly, the movement in the left and right directions can be restricted while the moving rail 120 and the middle rail 130 are slid.

At this time, although not shown, the pulley 221 has the same diameter as the flange 213 to contact the side surfaces of the moving rail 120 and the fixed rail 110.

Then, as shown in fig. 17, the flange portion 213 may further include a protrusion 215, and the protrusion 215 protrudes toward the moving rail 120 and the fixing rail 110 to first contact with the moving rail 120 and the fixing rail 110.

That is, a semicircular protrusion 215 protruding outward is formed on a side surface of the flange 213, and the protrusion 215 is in contact with the moving rail 120 and the fixed rail 110. Accordingly, the contact area with the moving rail 120 and the fixed rail 110 is minimized, and the friction force can be reduced. Only the projection 215 formed on the flange portion 213 of the pinion 210 is shown in fig. 17, but a projection may be similarly formed on the pulley.

Further, as shown in fig. 18, the pinion 230 has a guide slot 233 formed in the gear portion 232 in the circumferential direction, and the first wire 222 is disposed so as to be inserted into the guide slot 233. With this structure, the pinion 230 is gear-fastened to the rack 140 in a state where the first wire 222 is inserted and disposed in the guide slot 233 formed at the gear part 232, and thus, the wire separation of the first wire 222 can be prevented.

In this case, the pinion 230 has a diameter larger than the interval between the moving rail 120 and the fixed rail 110, contacts the side surfaces of the moving rail 120 and the fixed rail 110, and is restricted from moving in the left and right directions while the moving rail 120 and the intermediate rail 130 slide.

In addition, as shown in fig. 19, the pinion 230 may further include a protrusion 235, and the protrusion 235 protrudes toward the moving rail 120 and the fixed rail 110 to first contact the moving rail 120 and the fixed rail 110.

The sliding device of the first to third embodiments of the present invention further includes a stopper for restricting the pinion from rotating on the rack if the moving rail reaches the maximum pull-out position, so as to prevent the drawer from being separated from the main body.

Fig. 20 is a view schematically showing a stopper formed at a rack extracted from the sliding apparatus according to the first to third embodiments of the present invention;

referring to fig. 20, the stopper 142 is formed to protrude from the gear portion 141 of the rack 140 at the position where the moving rail reaches the maximum pull-out position, and restricts the pinion 150 from rotating in the moving rail pull-out direction any more.

Further, the sliding device of the third embodiment of the present invention may further include an automatic closing tool that is automatically closed when the storage body is opened and closed.

Fig. 21 is a view schematically showing a state in which an automatic closing tool is added to a slide device according to a third embodiment of the present invention.

Referring to fig. 21, the auto-close tool 400 includes: a housing main body 410 disposed on a side surface of the rack 140; and an engaging portion 420 disposed inside the housing body 410, which is engaged with a rotation shaft 211 when the intermediate rail 130 moves in a closing direction, wherein the rotation shaft 211 protrudes outward from the pinion gear 210 disposed on the intermediate rail 130.

That is, when the housing is moved in the opening direction, the engagement of the rotation shaft 211 of the pinion gear 210 with the engagement portion 420 is released, and when the housing is moved in the closing direction, the rotation shaft 211 of the pinion gear 210 is engaged with the engagement portion 420 and can be automatically moved to the closed position.

Here, since the automatic closing tool is a device that has been used in the related art, the detailed configuration and operation thereof are omitted.

Fig. 22 and 23 are a perspective view and a side view schematically showing a sliding device according to a fourth embodiment of the present invention; FIG. 24 is a cross-sectional view schematically illustrated by cutting the area D-D' of FIG. 21; fig. 25 is an exploded perspective view schematically showing the first fixing section removed from the sliding device according to the fourth embodiment of the present invention.

In the sliding apparatus 300 according to the fourth embodiment of the present invention, the same reference numerals as those of the sliding apparatus 100 according to the first embodiment disclosed in fig. 1 to 4 denote the same structures, and thus detailed description thereof will be omitted. That is, the sliding apparatus 300 of the fourth embodiment is partially different from the sliding apparatus 100 of the first embodiment in the driving tool.

Referring to fig. 22 to 25, a driving tool of a sliding apparatus 300 according to a fourth embodiment of the present invention includes: a driving pulley 310 rotatably fastened to one side of the middle rail 130, having gear teeth 311 formed on an outer circumferential surface thereof, and rotated by receiving a rotational power of the driving motor; a guide pulley 320 rotatably fastened to the other side of the middle rail 130 and having gear teeth 321 formed at an outer circumferential surface; a belt 330 having gear teeth 331 formed on an inner circumferential surface thereof and engaged with the gear teeth 311 and 321 of the driving pulley 310 and the guide pulley 320; a first fixing portion 340 disposed on the moving rail 120 and fastening one side of the tape 330 positioned on the moving rail 120 side; and a second fixing portion 350 disposed on the fixing rail 110 and fastening the other side of the band 330 positioned on the fixing rail 110 side.

With this configuration, when the driving motor is operated to rotate the driving pulley 310, the belt 330 is rotated, the driving pulley 310 moves together with the intermediate rail 130, and the moving rail 120 moves together with the movement of the belt 330 fastened to the first fixing part 340. At this time, the moving distance of the moving rail 120 is twice as long as that of the intermediate rail 130.

That is, the sliding apparatus 300 of the fourth embodiment does not use a rack and pinion, but forms gear teeth at a pulley, and uses a belt instead of a wire, the number of parts can be reduced while achieving the same effect.

Then, the first and second fixing

parts

340 and 350 form gear teeth to be engaged with the gear teeth 331 of the band 330, and thus a separate fastening part is not required for fastening.

In more detail, referring to fig. 25, the first fixing portion 340 includes: a fixed part body 341 fastened to the moving rail 120; a slot 342 into which the band 330 is inserted at the fixing body 341; gear teeth 343 formed in the slots 342 and engaging the gear teeth 331 of the belt 330; and a fastening part 344 which engages the gear teeth 331 of the band 330 with the gear teeth 343 formed at the slot 342 in a state that the slot 342 is inserted into the band 330, and performs pressure fastening without disengaging the band 330.

Then, although not separately shown in the drawings, the second fixing portion 350 has the same structure as the first fixing portion 340.

With the configuration of the first and second fixing

portions

340 and 350, the band 330 can be easily fastened regardless of the configuration of the band 330. That is, the belt 330 is disposed in a 2-belt shape to surround the driving pulley 310 and the guide pulley 320 and then fastened thereto, or in a single belt shape to surround the driving pulley 310 and the guide pulley 320 and be inserted into one fixing portion, and then both ends are inserted into the other fixing portion. Alternatively, even if the endless track is arranged, the drive pulley 310 and the guide pulley 320 may be enclosed and fastened after being inserted into two fixing portions.

As described above, although the present invention has been described by way of the limited embodiments and the accompanying drawings, the present invention is not limited thereto, but various modifications and variations can be made by those having ordinary knowledge in the art to which the present invention pertains within the equivalent scope of the technical idea of the present invention and the claims.

Claims

1. A sliding device, comprising:

a fixed rail fixed to a main body of the insertion receiving body;

a moving rail fixed to the storage body;

an intermediate rail disposed between the moving rail and the fixed rail and relatively moving with respect to the moving rail and the fixed rail; and

a driving means that moves the intermediate rail and moves the moving rail twice the moving distance of the intermediate rail.

2. Sliding device according to claim 1,

the driving tool includes:

a driving unit that moves the intermediate rail; and

and a power transmission unit connecting the intermediate rail and the moving rail and moving the moving rail twice as long as the moving distance of the intermediate rail.

3. Sliding device according to claim 2,

the driving part includes:

the rack is arranged on the fixed track; and

a pinion gear rotatably provided at one side of the middle rail and engaged with the rack gear.

4. Sliding device according to claim 3,

the rack further comprises a stop member which is provided on the rack,

the stopper is protrusively formed at a gear portion located at a position where the moving rail reaches a maximum pull-out position, and restricts the pinion from rotating in the moving rail pull-out direction.

5. Sliding device according to claim 3,

the power transmission portion further includes:

a first pulley rotatably fastened to one side of the middle rail;

a second pulley rotatably fastened to the other side of the middle rail;

a first wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the first pulley; and

and a second wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the second pulley.

6. Sliding device according to claim 5,

the first pulley and the second pulley have a diameter smaller than a space between the moving rail and the fixed rail, and are disposed between the moving rail and the fixed rail.

7. Sliding device according to claim 5,

the first and second pulleys have a diameter greater than a space between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail.

8. Sliding device according to claim 7,

the first pulley and the second pulley further comprise a protrusion,

the protrusion protrudes to the moving rail and the fixed rail side to first contact with the moving rail and the fixed rail.

9. Sliding device according to claim 5,

the first pulley and the second pulley include:

a first flange having a diameter smaller than a space between the moving rail and the fixed rail and disposed between the moving rail and the fixed rail;

a second flange formed spaced apart from the first flange and having a diameter greater than a space between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail; and

a guide groove formed between the first flange and the second flange and around which a wire is wound.

10. Sliding device according to claim 3,

the power transmission unit includes:

a pulley rotatably fastened to the other side of the middle rail;

a first wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping a rotation shaft of the pinion; and

and a second wire having one side end fastened to the moving rail and the other side end fastened to the fixed rail and wrapping the pulley.

11. Sliding device according to claim 10,

the pinion gear further includes a flange portion that,

the flange portion is expanded in a radial direction at the rotation axis and spaced apart from the gear portion by a predetermined pitch;

the first metal wire is disposed between the gear portion and the flange portion.

12. Sliding device according to claim 11,

the flange portion has a diameter greater than a space between the moving rail and the fixed rail to contact sides of the moving rail and the fixed rail.

13. Sliding device according to claim 12,

the flange portion may further include a projection that,

14. Sliding device according to claim 7,

the pinion gear has a gear portion with a guide slot formed in a circumferential direction thereof, and the first wire is disposed in the guide slot.

15. Sliding device according to claim 14,

the pinion gear further includes a projection that is formed on the pinion gear,

16. The slide of claim 3, further comprising:

and an automatic closing tool which is automatically closed while being engaged with and disengaged from a rotary shaft protruding outward from the pinion gear at the time of opening and closing the intermediate rail.

17. Sliding device according to claim 1,

the driving tool includes:

a driving pulley rotatably fastened to one side of the middle rail and having gear teeth formed on an outer circumferential surface thereof;

a guide pulley rotatably fastened to the other side of the middle rail and having gear teeth formed on an outer circumferential surface;

a belt having gear teeth formed on an inner circumferential surface thereof to be engaged with the gear teeth of the driving pulley and the guide pulley;

a first fixing portion disposed on the moving rail and fastening one side of the tape positioned on the moving rail side; and

and a second fixing portion disposed on the fixing rail and fastening the other side of the tape located on the fixing rail side.