TWI606173B - Horizontal pull floor door and its door frame - Google Patents

Description

Horizontal pull type floor door and its door frame

The invention relates to a horizontal pull type floor door and a door frame thereof, in particular to a horizontal pull type floor landing door and a door frame thereof which can be applied to a general space and an unobstructed space.

Generally, the under frame of the horizontal pull type floor door generally has an inner portion and a side portion adjacent to the inner portion, and the inner portion and the outer portion are respectively slidably mounted by an inner door fan and an outer door leaf, respectively When the horizontally-drawn floor-standing door is applied between indoors and outdoors, the height of the outer portion is usually lower than the height of the inner portion based on the requirements of waterproofing and drainage, so as to prevent rainwater from entering the room and contributing to The accumulated water is excluded from the outdoor direction. However, in recent years, with the advancement of society, the public has paid more and more attention to the accessibility of various spaces, and the horizontal pull-type floor-to-ceiling doors used in the barrier-free space need to make the inner portion and the outer portion highly uniform, avoiding The difference between the inner side portion and the outer side portion makes it inconvenient to move when using an auxiliary tool such as a wheelchair. Due to the difference of the lower frame strips of the horizontal pull type floor door required in the above two situations, different door frame molds need to be designed corresponding to different situations when producing the door frame, thereby increasing the production cost.

Accordingly, it is an object of the present invention to provide a horizontally-drawing floor-to-ceiling door and a door frame thereof that can be applied to general spaces and barrier-free spaces.

Therefore, in some embodiments, the horizontal pull type floor frame of the present invention is slidably mounted for an inner door fan and an outer door leaf. The inner door fan includes an inner door pulley block at the bottom, and the outer door fan includes a outer door fan block at the bottom. The horizontal pull type floor frame comprises a main lower frame strip and a pair of lower frame strips. The main lower frame strip includes an inner side portion and a side portion adjacent to the inner side portion. The top of the inner portion protrudes from the top of the outer portion, and the inner portion has an inner portion body and an inner slide rail projecting upward from the top of the inner portion body. The inner slide rail is configured to roll the inner door pulley block, so that the inner door fan can slide on the inner slide rail. The outer portion has an outer portion body and a first outer slide rail projecting upward from the top of the outer portion body. The first outer slide rail can be used for rolling the outer door pulley block, so that the outer door leaf can slide on the first outer slide rail. The sub-lower frame strip is detachably mounted on the outer lower frame strip and is detachably mounted on the outer side portion, the sub-lower frame strip includes a pair of lower frame strip bodies, and a shape formed on the bottom of the sub-lower frame strip body The first outer slide rail cooperates with the engaging groove, and a second outer slide rail that protrudes upward from the top of the sub-lower frame body, and the second outer slide rail can be used for the outer door fan pulley group to roll, thereby making the outer The door leaf is slidable on the second outer slide rail, and when the sub lower frame strip is mounted on the outer side portion, the top of the sub-lower frame strip is flush with the top of the inner side portion.

In some embodiments, a support member having an L-shaped cross section is further included, the support member includes a mounting portion, and a bearing portion connected to the mounting portion, the mounting portion being detachably mounted to the sub-lower frame strip And when the support member is mounted on the sub-lower frame strip, the load-bearing portion is approximately parallel to the ground.

In some implementations, the method further includes a frame strip above the main lower frame strip, the upper frame strip has an upper frame strip body, and an inner protruding block extending downward from a bottom portion of the upper frame strip body and An outer protrusion located above the inner rail, the outer protrusion being located on the first outer rail Above, the inner door fan further comprises an inner door fan chute formed on the top, the outer door fan further comprising an outer door fan chute formed on the top, the inner protrusion being slidable relative to the inner door fan chute Extending on the inner door fan chute, the outer protrusion can protrude from the outer door fan chute to protrude from the outer door fan chute.

In some implementations, the method further includes a left frame strip, and a right frame strip, the bottom of the left frame strip is connected to the left side of the main lower frame strip, and the top portion is connected to the left side of the upper frame strip, and the right frame strip is The bottom is connected to the right side of the main lower frame bar, and the top is connected to the right side of the upper frame bar.

In some embodiments, the inner slide rail has an inner slide rail body, and a slide rail that can be mounted on the top of the first inner slide rail body, the first outer slide rail has a first outer slide rail body And a slide rail that can be mounted on the top of the first outer slide rail body, the second outer slide rail has a second outer slide rail body, and a slide rail that can be mounted on the top of the second outer slide rail body Strips, the slide rails are respectively rolled for the inner door pulley block and the outer door pulley block, and when the sub lower frame strip is mounted on the outer side portion, the slide rails of the first outer slide rail are not mounted on the first outer slide a rail body, and the first outer rail body is engaged with the engaging groove.

The present invention has at least the following effects: by the detachable sub-lower frame strip, the inner and outer sides of the frame strip under the horizontal pull-type floor frame can be one high and one low, or the same height. The horizontally-drawn floor frame can be applied to general space and barrier-free space, and further saves part of the production cost.

In some embodiments, the horizontal pull type floor landing door of the present invention comprises an inner door leaf, an outer door leaf, and a horizontal pull type floor frame. The inner door fan includes a set of inner door pulleys at the bottom. The outer door The fan includes a set of outer door pulleys at the bottom. The horizontal pull type floor frame is slidably mounted to the inner door fan and the outer door leaf, and the horizontal pull type floor frame comprises a main lower frame strip and a pair of lower frame strips. The main lower frame strip has an inner side portion and an outer side portion adjacent to the inner side portion. The top of the inner portion protrudes from the top of the outer portion, and the inner portion has an inner portion body and an inner slide rail projecting upward from the top of the inner portion body. The inner slide rail is configured to roll the inner door pulley block, so that the inner door fan can slide on the inner slide rail. The outer portion has an outer portion body and a first outer slide rail projecting upward from the top of the outer portion body. The first outer slide rail can be used for rolling the outer door pulley block, so that the outer door leaf can slide on the first outer slide rail. The sub-lower frame strip is detachably mounted on the outer lower frame strip and is detachably mounted on the outer side portion, the sub-lower frame strip has a pair of lower frame strip bodies, and a shape formed on the bottom of the sub-lower frame strip body The first outer slide rail cooperates with the engaging groove, and a second outer slide rail that protrudes upward from the top of the sub-lower frame body. The second outer slide rail can be used for rolling the outer door pulley block, so that the outer door leaf can slide on the second outer slide rail. When the sub-lower frame strip is mounted on the outer side portion, the top of the sub-lower frame strip is flush with the top of the inner side portion.

In some embodiments, the horizontally-drawn floor frame further includes a support member having an L-shaped cross section, the support member having a mounting portion, and a bearing portion coupled to the mounting portion, the mounting portion being detachably mounted In the sub-lower frame strip, and the support member is mounted on the sub-lower frame strip, the load-bearing portion is approximately parallel to the ground.

In some implementations, the horizontally-drawn floor frame further includes a frame strip above the main lower frame strip, the upper frame strip has an upper frame body, and extends downward from the bottom of the upper frame body An inner protrusion and an outer protrusion, the inner protrusion being located above the inner rail, the outer protrusion Above the first outer slide rail, the inner door fan further includes an inner door fan chute formed on the top, the outer door fan further includes an outer door fan chute formed on the top, the inner protrusion and the inner door fan The top sliding slot protrudes relative to the inner door fan chute, and the outer protruding block protrudes from the outer door fan chute to protrude from the outer door fan chute.

In some implementations, the horizontally-drawn floor frame further includes a left frame strip and a right frame strip, the bottom of the left frame strip is connected to the left side of the main lower frame strip, and the top portion is connected to the left side of the upper frame strip. The bottom of the right frame is connected to the right side of the main lower frame bar, and the top is connected to the right side of the upper frame bar.

In some embodiments, the inner slide rail has an inner slide rail body, and a slide rail that can be mounted on the top of the first inner slide rail body, the first outer slide rail has a first outer slide rail body And a slide rail that can be mounted on the top of the first outer slide rail body, the second outer slide rail has a second outer slide rail body, and a slide rail that can be mounted on the top of the second outer slide rail body Strips, the slide rails are respectively rolled for the inner door pulley block and the outer door pulley block, and when the sub lower frame strip is mounted on the outer side portion, the slide rails of the first outer slide rail are not mounted on the first outer slide a rail body, and the first outer rail body is engaged with the engaging groove.

The present invention has at least the following effects: by the detachable sub-lower frame strip, the inner and outer sides of the frame strip under the horizontal pull-type floor frame can be one high and one low, or the same height. The horizontally-drawn floor landing door can be applied to general space and barrier-free space, and further saves part of the production cost.

1‧‧‧ inner door fan

11‧‧‧Indoor door pulley block

12‧‧‧ inner door fan chute

2‧‧‧External door leaf

21‧‧‧External door pulley block

22‧‧‧External door fan chute

3‧‧‧ horizontal pull type door frame

31‧‧‧Main lower frame

311‧‧‧ inside part

312‧‧‧Internal body

313‧‧‧Inside rails

314‧‧‧Inside slide body

315‧‧‧Slide rails

316‧‧‧Outside

317‧‧‧Outside body

318‧‧‧First outer slide

319‧‧‧First outer slide body

32‧‧‧Sub-frame

321‧‧‧Subordinate lower frame body

322‧‧‧ snap groove

323‧‧‧Second outer slide

324‧‧‧Second outer slide body

33‧‧‧Support

331‧‧‧Installation Department

332‧‧‧Loading Department

34‧‧‧Top frame

341‧‧‧Top frame body

342‧‧‧Inside projection

343‧‧‧Outer projection

35‧‧‧Left frame

36‧‧‧Right frame

4‧‧‧floor

5‧‧‧Drainage trench

6‧‧‧ Grid board

61‧‧‧Drainage holes

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a front view of an embodiment of a horizontal pull type landing door of the present invention; FIG. 2 is a cross-sectional view illustrating FIG. 3 is a cross-sectional view showing an upper frame strip of the embodiment; and FIG. 4 is a cross-sectional view illustrating the corresponding relationship between the main lower frame strip and the lower lower frame strip applied to the barrier-free space; The main lower frame of the embodiment is applied to the condition of the general space.

Referring to FIG. 1 to FIG. 4, an embodiment of the horizontal pull type floor landing door of the present invention comprises an inner door leaf 1, an outer door leaf 2, and a horizontal pull type floor frame 3. In Fig. 2, symbol I represents an indoor space, and O represents an outdoor space.

The inner door fan 1 includes an inner door fan block 11 at the bottom, and an inner door top chute 12 formed at the top. The outer door leaf 2 includes an outer door fan block 21 at the bottom, and an outer door top chute 22 formed at the top.

The horizontal sliding floor frame 3 is slidably mounted to the inner door leaf 1 and the outer door leaf 2, and the horizontal sliding floor frame 3 includes a main lower frame strip 31, a pair of lower frame strips 32, and a support member 33. An upper frame strip 34, a left frame strip 35, and a right frame strip 36. The main lower frame strip 31 has an inner portion 311 and an outer side portion 316 adjacent to the inner portion 311. The top portion of the inner portion 311 protrudes from the top of the outer portion 316, and the inner portion 311 has an inner portion body 312 and a top portion of the inner portion body 312 The inner slide rail 313 protrudes upward. The inner slide rail 313 has an inner slide rail body 314, and a slide rail 315 that can be mounted on the top of the first inner slide rail body 314. The slide rail strip 315 of the inner slide rail 313 is used for rolling the inner door pulley block 11 . That is, the inner slide rail 313 can roll the inner door pulley block 11, so that the inner door fan 1 can slide on the inner slide rail 313. The outer portion 316 has an outer portion body 317 and a first outer rail 318 projecting upwardly from the top of the outer portion body 317. The first outer slide rail 318 has a first outer slide rail 319 and a slide rail 315 mountable on the top of the first outer slide rail 319. The slide rail 315 of the first outer slide rail 318 is provided. The outer door pulley block 21 is rolled, that is, the first outer slide rail 318 can be rolled by the outer door pulley block 21, so that the outer door leaf 2 can slide on the first outer slide rail 318 (as shown in FIG. 4).

The sub-lower frame strip 32 is detachably mounted on the outer lower frame strip 31 and is detachably mounted on the outer side portion 316. The sub-lower frame strip 32 has a pair of lower frame strip bodies 321 and a sub-lower frame strip. An engaging groove 322 having a bottom portion of the body 321 and a shape matching the first outer sliding rail 318, and a second outer sliding rail 323 protruding upward from a top of the sub-lower frame body 321 . The second outer slide rail 323 has a second outer slide rail 324, and a slide rail 315 mountable on the top of the second outer slide rail 324. The slide rail 315 of the second outer slide rail 323 is provided. The outer door pulley block 21 is rolled, that is, the second outer slide rail 323 can be rolled by the outer door pulley block 21, so that the outer door leaf 2 can slide on the second outer slide rail 323 (as shown in FIG. 2). When the sub lower frame strip 32 is mounted on the outer side portion 316, the top of the sub lower frame strip 32 is flush with the top of the inner side portion 311. The support member 33 has a mounting portion 331 and a bearing portion 332 connected to the mounting portion 331. The mounting portion 331 is detachably mounted to the sub-lower frame strip 32, and when the support member is mounted to the sub-lower frame strip 32, the carrying portion 332 is approximately parallel to the ground.

The upper frame strip 34 is located above the main lower frame strip 31, and the upper frame strip 34 has an upper frame strip body 341, and an inner protruding block 342 and a lateral protrusion extending downward from the bottom of the upper frame strip body 341. Block 343. The inner protrusion 342 is located above the inner slide rail 313 , and the outer protrusion 343 is located above the first outer slide rail 318 . The inner door fan 1 further includes an inner door fan chute 12 formed at the top, and the outer door fan 2 further includes an outer door fan chute 22 formed at the top. The inner protrusion 342 protrudes from the inner door fan chute 12 and protrudes from the inner door fan chute 12 , and the outer protrusion 343 protrudes relative to the outer door fan chute 22 . Door fan chute 22. The bottom of the left frame strip 35 is connected to the left side of the main lower frame strip 31, and the top portion is connected to the left side of the upper frame strip 34. The bottom of the right frame strip 36 is connected to the right side of the main lower frame strip 31, and the top portion is connected to the right side of the upper frame strip 34.

Referring to FIG. 2, when the horizontal landing door is installed in the barrier-free space, the horizontal landing door is interposed between the indoor space I and the outdoor space O. The main lower frame strip 31 is embedded in a floor panel 4, and the inner side portion 311 is adjacent to the indoor space I, and the outer side portion 316 is adjacent to the outdoor space O. When the sub-lower frame bar 32 is mounted on the outer side portion 316, the slide rail strip 315 of the first outer slide rail 318 is not mounted on the first outer slide rail body 319, and the first outer slide rail body 319 is engaged. In the engagement slot 322. The slide rail 315 of the inner slide rail 313 is mounted on the inner slide rail body 314 and is rolled by the inner door pulley block 11 . The slide rail strip 315 of the second outer slide rail 323 is mounted on the second outer slide rail body 324 . And the outer door leaf pulley group 21 is rolled. The main lower frame strip 31 and the sub-lower frame strip 32 together with the floor panel 4 define a drainage channel 5 in the outdoor space O for guiding the water accumulation. The mounting portion 331 of the support member 33 is mounted on the sub-lower frame strip 32, and the bearing portion 332 of the support member 33 and the floor panel 4 jointly support a grid plate 6 having a plurality of drain holes 61. The grid plate 6 Assist in removing stagnant water to the drain channel 5 and Prevent accumulated water from entering the indoor space I. The top of the floor panel 4 is flush with the top of the grille plate 6, the top of the inner side portion 311 and the top of the sub-lower frame strip 32, so that when the auxiliary access device of the wheelchair or the like passes through the horizontal pull-type floor-standing door, it is more accessible. . When the present embodiment is applied between the two indoor spaces of the drain groove 5 without the aforementioned, the grid plate 6 is not required, and therefore the support member 33 is not required to be mounted on the sub-lower frame strip 32.

Referring to FIG. 4, when the horizontal pull type landing door is installed in a general space, the horizontal pull type landing door is between an indoor space I and an outdoor space O. The main lower frame strip 31 is embedded in a floor panel 4, and the inner side portion 311 is adjacent to the indoor space I, and the outer side portion 316 is adjacent to the outdoor space O. When the horizontal pull type landing door is applied to a general space, the sub lower frame strip 32 does not need to be mounted on the main lower frame strip 31. The slide rail 315 of the inner slide rail 313 is mounted on the inner slide rail body 314 and is rolled by the inner door pulley block 11 . The slide rail strip 315 of the first outer slide rail 318 is mounted on the first outer slide rail body 319 . And the outer door leaf pulley group 21 is rolled. The main lower frame strip 31 and the floor panel 4 together define a drainage channel 5 in the outdoor space O for guiding the water. Further, since the sub-lower frame bar 32 is not attached at this time, the height difference between the inner side portion 311 and the outer side portion 316 can allow the water accumulated by rainwater or the like to smoothly flow out to the drain groove 5. Moreover, since the top of the inner side portion 311 protrudes a distance from the floor panel 4 at this time, it is possible to prevent the accumulated water from entering the indoor space I.

In summary, the horizontal pull-type floor-to-ceiling door and the door frame thereof of the present invention can be detached from the lower and lower frame strips 32, so that the inner and outer sides of the frame under the horizontal pull-type floor frame 3 can be a high one. Low, it can also be the same height of the two, so that the horizontal pull-type floor door and its door frame can be applied to general space and barrier-free space, and further save part of the production cost, so the object of the present invention can be achieved.

However, the above is only an embodiment of the present invention, and the present invention cannot be limited thereto. The scope of the invention, the simple equivalent changes and modifications made by the scope of the invention and the patent specification are still within the scope of the invention.

1‧‧‧ inner door fan

11‧‧‧Indoor door pulley block

2‧‧‧External door leaf

21‧‧‧External door pulley block

3‧‧‧ horizontal pull type door frame

31‧‧‧Main lower frame

311‧‧‧ inside part

312‧‧‧Internal body

313‧‧‧Inside rails

314‧‧‧Inside slide body

315‧‧‧Slide rails

316‧‧‧Outside

317‧‧‧Outside body

318‧‧‧First outer slide

319‧‧‧First outer slide body

32‧‧‧Sub-frame

321‧‧‧Subordinate lower frame body

322‧‧‧ snap groove

323‧‧‧Second outer slide

324‧‧‧Second outer slide body

33‧‧‧Support

331‧‧‧Installation Department

332‧‧‧Loading Department

4‧‧‧floor

5‧‧‧Drainage trench

6‧‧‧ Grid board

61‧‧‧Drainage holes

Claims (10)

A horizontal pull type floor frame for slidably mounting an inner door fan and an outer door fan, the inner door fan comprising a bottom door inner door pulley block, the outer door fan comprising a bottom outer door door pulley set, the horizontal pull type floor frame The utility model comprises: a main lower frame strip comprising an inner side portion and an outer side portion adjoining the inner side portion, the top portion of the inner side portion protruding from a top portion of the outer side portion, and the inner side portion having an inner side portion body, And an inner slide rail protruding upward from a top portion of the inner portion body, the inner slide rail is configured to roll the inner door pulley block, and the inner door fan is slidable on the inner slide rail, and the outer side portion has an outer side body And a first outer slide rail protruding upward from a top portion of the outer portion body, the first outer slide rail is configured to roll the outer door pulley block, and the outer door fan is slidable on the first outer slide rail; a pair of lower frame strips shaped to fit on the main lower frame strip and detachably mounted on the outer side portion, the sub-lower frame strip comprising a pair of lower frame strip bodies, a shape formed at the bottom of the sub-lower frame strip body With the first An outer sliding rail cooperates with the engaging groove, and a second outer sliding rail protruding upward from the top of the auxiliary lower frame body, the second outer sliding rail can be used for rolling the outer door sliding pulley group, thereby enabling the outer door leaf to be The second outer slide rail slides, and when the sub-lower frame strip is mounted on the outer side portion, the top of the sub-lower frame strip is flush with the top of the inner side portion. The horizontally-drawn floor frame according to claim 1, further comprising a support member having an L-shaped cross section, the support member comprising a mounting portion, and a bearing portion connected to the mounting portion, the mounting portion being detachably mounted In the sub-lower frame strip, and the support member is mounted on the sub-lower frame strip, the load-bearing portion is approximately parallel to the ground. The horizontally-drawn floor frame of claim 1, further comprising a frame bar above the main lower frame strip, the upper frame strip having an upper frame body and extending downward from the bottom of the upper frame body An inner protrusion and an outer protrusion, the inner protrusion is located on the inner slide The outer protrusion is located above the first outer slide rail, and the inner door fan further comprises an inner door fan chute formed on the top, the outer door fan further comprising an outer door fan chute formed on the top, the inner side protrusion The block can protrude from the inner door fan chute to protrude from the inner door fan chute, and the outer protrusion can protrude from the outer door fan chute to protrude from the outer door fan chute. The horizontal pull-type floor frame as claimed in claim 3, further comprising a left frame strip and a right frame strip, wherein the bottom of the left frame strip is connected to the left side of the main lower frame strip, and the top portion is connected to the left side of the upper frame strip The bottom of the right frame is connected to the right side of the main lower frame bar, and the top is connected to the right side of the upper frame bar. The horizontal pull-type floor frame of claim 1, wherein the inner slide rail has an inner slide rail body, and a slide rail that can be mounted on the top of the first inner slide rail body, the first outer slide rail The utility model has a first outer slide rail body, and a slide rail strip mountable on the top of the first outer slide rail body, the second outer slide rail has a second outer slide rail body, and one can be mounted on the second a slide rail strip at the top of the outer slide rail body, wherein the slide rail strips are respectively rolled by the inner door fan block group and the outer door fan block group, and the first outer slide rails are arranged when the sub lower frame strip is mounted on the outer side portion The first outer slide rail body is not mounted on the first outer slide rail body, and the first outer slide rail body is engaged with the engagement groove. A horizontal pull type floor landing door comprises: an inner door fan comprising an inner door fan block group at the bottom; an outer door fan comprising a outer door fan block group at the bottom; and a horizontal pull type floor frame for the inner door fan and the outer door The door leaf is slidably mounted, and the horizontal pull type floor frame comprises a main lower frame strip and a pair of lower frame strips, the main lower frame strip has an inner side portion, and a side portion adjacent to the inner side portion, the inner side The top of the portion protrudes from the top of the outer portion, and the inner portion has an inner portion body, and An inner slide rail protruding upwardly from a top portion of the inner portion body, wherein the inner slide rail is configured to roll the inner door pulley block, so that the inner door fan can slide on the inner slide rail, the outer portion has an outer portion body, and a self portion a first outer slide rail protruding upwardly from a top portion of the outer portion body, the first outer slide rail being rotatable for the outer door fan pulley group, so that the outer door fan can slide on the first outer slide rail, the sub-lower frame rail Formed on the outer lower frame strip and detachably mounted on the outer side portion, the sub-lower frame strip has a pair of lower frame strip body, a bottom formed on the bottom of the sub-lower frame strip body and shaped to slide with the first outer side a rail engaging groove, and a second outer rail protruding upward from a top of the sub-lower frame body, the second outer rail is adapted to roll the outer door pulley block, thereby enabling the outer door to be The two outer slide rails slide, and when the sub-lower frame strip is mounted on the outer side portion, the top of the sub-lower frame strip is flush with the top of the inner side portion. The horizontal pull type floor landing door according to claim 6, wherein the horizontal pull type floor frame further comprises an L-shaped support member, the support member has a mounting portion, and a bearing portion connected to the mounting portion The mounting portion is detachably mounted to the sub-lower frame strip, and when the support member is mounted to the sub-lower frame strip, the carrying portion is approximately parallel to the ground. The horizontal pull type floor landing door of claim 6, wherein the horizontal pull type floor frame further comprises a frame strip above the main lower frame strip, the upper frame strip has an upper frame strip body, and An inner protruding block and an outer protruding block extending downward from a bottom portion of the upper frame body, the inner protruding block being located above the inner sliding rail, the outer protruding block being located above the first outer sliding rail, the inner door fan further comprising a forming In the top inner door fan chute, the outer door fan further includes an outer door fan chute formed on the top, the inner protrusion protruding from the inner door fan chute to protrude from the inner door fan chute. The outer protrusion can protrude from the outer door fan chute relative to the outer door fan chute. The horizontal pull type floor landing door according to claim 8, wherein the horizontal pull type floor frame further comprises a left frame bar and a right frame bar, the bottom of the left frame bar is connected to the left side of the main lower frame bar, and the top portion is connected to the left side of the upper frame bar, and the bottom of the right frame bar is connected to the right side of the main lower frame bar And the top is connected to the right side of the upper frame bar. The horizontal pull type landing door of claim 6, wherein the inner slide rail has an inner slide rail body, and a slide rail strip mountable on the top of the first inner slide rail body, the first outer slide rail The utility model has a first outer slide rail body, and a slide rail strip mountable on the top of the first outer slide rail body, the second outer slide rail has a second outer slide rail body, and one can be mounted on the second a slide rail strip at the top of the outer slide rail body, wherein the slide rail strips are respectively rolled by the inner door fan block group and the outer door fan block group, and the first outer slide rails are arranged when the sub lower frame strip is mounted on the outer side portion The first outer slide rail body is not mounted on the first outer slide rail body, and the first outer slide rail body is engaged with the engagement groove.