CN111395919A

CN111395919A - Lifting sliding door and window

Info

Publication number: CN111395919A
Application number: CN202010323995.0A
Authority: CN
Inventors: 雒富民; 赖小辉; 庞蔼莲; 林晓霖
Original assignee: Xiamen Zhonghengxin Decoration Engineering Co ltd
Current assignee: Xiamen Zhonghengxin Decoration Engineering Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-07-10

Abstract

The invention provides a lifting sliding door and window, and relates to the technical field of doors and windows. The utility model provides a promote sliding door, includes window frame and two casement of parallel slip in the window frame, the casement includes the window frame and fixes the glass in the window frame, two be provided with first connecting portion and the second connecting portion that are used for sealing the clearance between the two between the casement, first connecting portion include first section bar and first joint strip, the second connecting portion include the second section bar, first section bar is fixed in two respectively with the second section bar the casement is in the both ends that are close to when closed state, the one end of second section bar towards first section bar is provided with first joint strip complex second sand grip. The invention has the advantages of strong air tightness, easy push-pull, ingenious structural design and small abrasion between the window sash and the window frame.

Description

Lifting sliding door and window

Technical Field

The invention relates to the technical field of doors and windows, in particular to a lifting sliding door and window.

Background

With the development of economy and technology, window and door systems have been developed from conventional manual window and door systems into multi-functional door systems, and more window and door systems are applied to corners of cities, and can be used as doors and windows.

A sliding door is a type of door in a door and window system, and includes a window frame and a plurality of sashes sliding in parallel on the window frame, and the sliding of the sashes allows the door and window to be opened or closed. Because most of traditional sliding windows are sealed by wool tops, the air tightness and the water tightness of the wool tops are poor, and noise is generated when sliding of sliding window sashes, so that the use feeling of users is influenced.

In view of this, the present inventors have invented a lifting sliding door.

Disclosure of Invention

The invention provides a lifting sliding door and window, and aims to solve the problems of high sliding force and serious abrasion of the conventional sliding door and window.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a promote sliding door, includes window frame and two casement of parallel slip in the window frame, the casement includes the window frame and fixes the glass in the window frame, two be provided with first connecting portion and the second connecting portion that are used for sealing the clearance between the two between the casement, first connecting portion include first section bar and first joint strip, the second connecting portion include the second section bar, first section bar is fixed in two respectively with the second section bar the casement is in the both ends that are close to when closed state, the one end of second section bar towards first section bar is provided with first joint strip complex second sand grip.

Furthermore, the second section bar further comprises a second sealing rubber strip, and a first convex strip matched with the second sealing rubber strip is arranged at one end, facing the second section bar, of the first section bar.

Furthermore, the bottom of the window sash is provided with a plurality of pulleys, the window frame is provided with slide rails matched with the pulleys in an inward protruding mode, the bottom of the window sash is at least provided with one foot support for locking or unlocking the pulleys through lifting, a lifting device for driving the foot support to lift is arranged between the window frame and the window sash, a movable space for upwards lifting the window sash is formed between the top of the window sash and the window frame, and the foot support and the window sash are fixed to achieve lifting of the window sash.

Furthermore, the bottom of the window frame is positioned between the two window sashes and is provided with a sealing gasket, when the window sashes are in a lifting state, the bottom of the window frame is abutted to the sealing gasket, and when the window sashes are in a locking state, the bottom of the window frame is separated from the sealing gasket.

Furthermore, the outside of window frame is provided with the sealing strip, the inboard outstanding protruding portion that is used for compressing the sealing strip with the window frame that is provided with of window frame, works as when the casement is in the hoisting state, the sealing strip breaks away from the protruding portion, works as when the casement is in the locking state, the sealing strip supports tightly with the protruding portion.

Further, the outside of window frame inwards caves in towards glass and forms the mounting groove, the sealing strip is provided with two and is located the inside wall of two symmetries of mounting groove notch department respectively, the protruding part stretches into in the mounting groove and there is the space between its top and the mounting groove tank bottom, the protruding part includes horizontal part and two vertical portions, two vertical portion is located the both sides of horizontal part perpendicularly, when the casement is in the promotion state, the sealing strip breaks away from vertical portion, works as when the casement is in the lock state, the sealing strip supports tightly with vertical portion.

Further, the lifting device comprises a connecting rod unit, the connecting rod unit comprises a horizontal rod, the pulley is rotatably connected with the horizontal rod, a movable block is fixed on the horizontal rod, a sliding inclined rail for the movable block is arranged on the foot support, and the movable block and the inclined rail are matched to realize the lifting of the foot support.

Furthermore, the connecting rod unit further comprises a vertical rod, a short rod and a corner piece, a supporting block is arranged at the corner of the window sash, the middle of the corner piece is hinged with the supporting block, two ends of the corner piece are hinged with the vertical rod and the short rod respectively, and the horizontal rod is hinged with one end, far away from the corner piece, of the short rod.

Furthermore, one side of the window sash, which is provided with the vertical rod, is provided with a transmission lock, the transmission lock comprises a transmission rod and a lifting handle, and the vertical rod is fixed with the transmission rod.

Furthermore, the inclined rail is arranged in the foot support and penetrates through the side wall of the foot support.

Compared with the prior art, the invention has the beneficial effects that:

(1) through the cooperation of first joint strip and second sand grip, the cooperation of second joint strip and first sand grip, when two casement were closed, avoided directly touching of first section bar and second section bar, reduced both and directly touched the noise that sends, guaranteed airtight and water proofness between two casement simultaneously, had the advantage that the noise is low, airtight and water proofness are excellent.

(2) By designing the lifting device, the sealing gasket, the sealing strip and the protruding part, when the window sashes are closed, the bottom of the window sashes are abutted against the sealing gasket, and the sealing strip is abutted against the vertical part of the protruding part, so that the air tightness between the two window sashes and between the window sashes and the window frame is further ensured; when the window sash needs to be opened, the bottom of the window sash is lifted to be separated from the sealing gasket and the sealing strip is separated from the vertical part, so that the friction force caused by the friction between the sealing gasket and the bottom of the window sash and the friction between the sealing strip and the vertical part during pushing and pulling is reduced, the window sash is easy to push and pull, the air tightness of the window sash is guaranteed, and the structural design is ingenious;

(3) by designing the pulleys and the sliding rails, sliding friction between the window sash and the window frame is converted into rolling friction, so that friction between the window sash and the window frame is reduced, driving force required for pushing the window frame is remarkably reduced, the window sash is convenient to push and pull, and abrasion between the window sash and the window frame is reduced; meanwhile, the pulley is locked and unlocked by lifting the foot support, so that the stability of combination between the window sash and the window frame is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a transverse cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the sash in an open position;

FIG. 4 is a vertical cross-sectional view of the present invention;

FIG. 5 is a schematic view highlighting the construction of the lifting device;

fig. 6 is a block diagram of the lifting device with the sash in a lifted state.

Description of the main elements

1. A window frame; 2. a window sash; 21. a window jamb; 22. glass; 3. a first connection portion; 31. a first profile; 32. a first sealing rubber strip; 33. a first rib; 4. a second connecting portion; 41. a second profile; 42. a second sealing rubber strip; 43. a second convex strip; 5. mounting grooves; 6. a pulley; 7. a slide rail; 8. a link unit; 81. a horizontal bar; 82. a vertical rod; 83. a short bar; 84. a corner piece; 9. a foot support; 10. a supporting seat; 11. a relief portion; 12. a ramp; 13. a movable block; 14. a connecting rod; 15. a transmission lock; 151. a transmission rod; 152. lifting the handle; 16. a gasket; 17. a sealing strip; 18. a protrusion; 181. a horizontal portion; 182. a vertical portion; 19. a sealing strip.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, a lifting sliding door comprises a frame 1 and two sashes 2 sliding in parallel in the frame 1. The window sash 2 comprises a window jamb 21 and glass 22, the glass 22 being fixed within the jamb 21.

As shown in fig. 2 and 3, a first connection portion 3 and a second connection portion 4 for sealing a gap between the two sashes 2 are provided therebetween. First connecting portion 3 includes first section bar 31 and first joint strip 32, and second connecting portion 4 includes second section bar 41 and second joint strip 42, and first section bar 31 is fixed in two respectively with second section bar 41 the both ends that are close to when casement 2 is in the closure state, first joint strip 32 sets up with second joint strip 42 relatively. A first convex strip 33 matched with the second sealing rubber strip 42 is arranged at one end of the first section bar 31 facing the second section bar 41, the first convex strip 33 and the first section bar 31 are integrally formed, a second convex strip 43 matched with the first sealing rubber strip 32 is arranged at one end of the second section bar 41 facing the first section bar 31, and the second convex strip 43 and the second section bar 41 are integrally formed. When the two sashes 2 slide relatively to close the window body, the first convex strip 33 touches the second sealing rubber strip 42 and tightly abuts against the second sealing rubber strip, and the second convex strip 43 touches the first sealing rubber strip 32 and tightly abuts against the first sealing rubber strip, so that the two sashes 2 are prevented from continuously sliding relatively to achieve the effect of closing the window body.

As shown in fig. 4 and 5, the outer side of the window jamb frame 21 is recessed inward to form the mounting groove 5. Two groups of pulleys 6 are arranged in the bottom of the window sash 2 in the mounting groove 5, the two groups of pulleys 6 are respectively arranged on two sides of the window sash 2, and each group of pulleys 6 comprises two wheels. The inward side of the window frame 1 is provided with a sliding rail 7 matched with the pulley 6, the middle part of the pulley 6 is inwards sunken, the end part of the sliding rail 7 far away from the window frame 1 is positioned in the sunken part of the pulley 6, and the pulley 6 is abutted against the sliding rail 7.

The bottom of the window sash 2 is provided with foot supports 9 for locking or unlocking the pulleys 6 through lifting, the foot supports 9 are arranged into two groups, the two groups of foot supports 9 are respectively positioned at the two groups of pulleys 6, and the single foot support 9 is positioned between two wheels of the single group of pulleys 6. When the foot support 9 is tightly abutted to the sliding rail 7, the pulley 6 is in a locking state, so that the stability of combining the window sash 2 and the window frame 1 is ensured; when the foot support 9 is separated from the sliding rail 7, the pulley 6 is in an unlocking state, and the pulley 6 can slide along the sliding rail 7, so that the window sash 2 can be conveniently pushed and pulled.

A lifting device for driving the foot support 9 to lift is arranged between the window frame 1 and the window sash 2, a movable space for lifting the window sash 2 upwards is arranged between the top of the window sash 2 and the window frame 1, and the foot support 9 and the window sash 2 are fixed to realize the lifting of the window sash 2. The lifting device comprises a connecting rod unit 8, two foot supports 9 are respectively distributed at two ends of the bottom of the window sash 2 and fixed with the window sash 2, the connecting rod unit 8 is fixed with the pulley 6, and when the connecting rod unit 8 moves, the relative positions of the foot supports 9 and the pulley 6 in the vertical direction change to realize the lifting of the window sash 2. A supporting seat 10 is vertically fixed at the corner of the bottom end of the window side sash, and one group of the foot supports 9 in the two groups of the foot supports 9 is fixed with the supporting seat 10.

The link unit 8 comprises a horizontal rod 81, a vertical rod 82, a short rod 83 and a corner piece 84, the corner piece 84 is triangular, one corner of the corner piece is hinged to the supporting seat 10 and is located at a position close to the corner of the window sash 2, the other two corners of the corner piece are hinged to the vertical rod 82 and the short rod 83 respectively, the vertical rod 82 is located at the vertical side of the supporting seat 10 arranged on the window frame 21, and the horizontal rod 81 is located at the bottom of the window sash 2 and is hinged to one end, far away from the corner piece 84, of the short rod 83. The number of the horizontal rods 81 is four, two of the four horizontal rods 81 are arranged at two ends of the bottom of the window sash 2, and the two horizontal rods 81 of the single group of horizontal rods 81 are symmetrically distributed at two sides of the pulley 6 and are rotatably connected with the pulley 6. A connecting rod 14 is provided between the two sets of horizontal rods 81 for integrally connecting the two sets of horizontal rods 81. The horizontal bar 81 and one end near the short bar 83 are provided with a relief portion 11, and the relief portion 11 is provided to be inclined downward in a direction toward the corner piece 84 along the horizontal bar 81. The positioning portion 11 prevents the end of the horizontal rod 81 near the short rod 83 from interfering with the corner piece 84 when sliding, thereby affecting the movement between the entire link units 8.

The vertical side edge of the window sash 2 provided with the vertical rod 82 is provided with a transmission lock 15, the transmission lock 15 comprises a transmission rod 151 and a lifting handle 152, the vertical rod 82 is fixed with the transmission rod 151, and the lifting of the vertical rod 82 can be realized through the rotation of the lifting handle 152. The foot support 9 is provided with an inclined rail 12, the inclined rail 12 penetrates through the side wall of the foot support 9, the lower end of the inclined rail 12 is close to the supporting seat 10, a movable block 13 is connected in the inclined rail 12 in a sliding mode, and two ends of the movable block 13 penetrate through the inclined rail 12 to be fixed with horizontal rods 81 located on two sides of the pulley 6.

As shown in fig. 4 and 6, when the window sash 2 needs to be opened, the lifting handle 152 is lifted upwards, the vertical rod 82 is lifted upwards to drive the corner piece 84 to rotate around the hinge point of the corner piece and the support seat 10 in the direction close to the vertical rod 82, so as to drive the short rod 83 to move, the short rod 83 pulls the horizontal rod 81 to move horizontally in the direction close to the support seat 10, the horizontal rod 81 drives the movable block 13 to move from the higher end of the inclined rail 12 to the lower end of the inclined rail 12 when moving, so that the relative height between the sliding block and the foot brace 9 changes, because there is no movable space between the pulley 6 and the slide rail 7 and there is a movable space at the top of the window sash 2, the foot brace 9 drives the window sash 2 to move upwards, so that the foot brace 9 is separated from the slide rail 7, the friction between the foot brace 9 and the slide rail 7 is reduced, and the pulley 6 can drive the window sash 2 to slide along the slide rail 7, the operation is convenient and effortless, and the abrasion between the window sash 2 and the window frame 1 is small.

When the pull handle 152 is pulled downwards, the vertical rod 82 moves downwards to drive the corner piece 84 to rotate around the hinged point of the vertical rod and the support seat 10 towards the direction close to the short rod 83, so that the short rod 83 is pushed to move, the short rod 83 drives the horizontal rod 81 to move towards the direction far away from the support block, so that the movable block 13 is driven to move from the lower end to the higher end of the inclined rail 12, the foot support 9 drives the window sash 2 to move downwards, the foot support 9 is supported on the slide rail 7 again, the friction force generated when the window sash 2 is pushed and pulled is increased, the window sash 2 can be stably parked in the window frame 1, and left and right deviation is not generated.

As shown in fig. 4 and 6, a gasket 16 is disposed at the bottom of the window frame 1, the gasket 16 is located in a gap between the two sashes 2, when the sashes 2 are in a lifted state, the bottom of the window frame 21 is separated from the gasket 16, and when the sashes 2 are in a locked state, the bottom of the window frame 21 is abutted to the gasket 16. Through this structure, when casement 2 closed, support with the window frame 21 bottom and guarantee the leakproofness of window frame 1 on sealed 16, when casement 2 needs the push-and-pull to open, window frame 21 can part with sealed 16 again, frictional force when reducing casement 2 push-and-pull makes things convenient for opening of casement 2 again when guaranteeing 2 density nature of casement, structural design is ingenious.

Two sealing strips 17 are arranged at intervals in the mounting groove 5, and the two sealing strips 17 are respectively positioned at two sides of the notch of the mounting groove 5. A protruding part 18 is provided at the middle part of the inner side of the window frame 1 and protrudes towards the window sash 2, the protruding part 18 is integrally in a T shape and comprises a horizontal part 181 and two vertical parts 182, and the two vertical parts 182 are vertically arranged at two sides of the horizontal part 181. The slide rail 7 is located on the horizontal portion 181 at the bottom of the window frame 1 and is located at the center of the horizontal portion 181. The protruding part 18 partially extends into the mounting groove 5, and when the foot brace 9 is tightly abutted to the window frame 1, the sealing strips 17 on the two sides of the groove of the mounting groove 5 are tightly abutted to the two vertical parts 182 respectively. A sealing strip 19 is arranged between the protruding part 18 and the inner side wall of the window frame 1, and the sealing strip 19 is positioned between the two sashes 2, so that the water tightness and the air tightness between the sashes 2 and the window frame 1 are further improved.

When the window sash 2 is lifted, the sealing strips 17 on two sides of the notch of the mounting groove 5 move upwards along with the window sash 2 and are separated from the vertical parts 182 on two sides of the protruding part 18, so that when the window sash 2 is pushed and pulled, the sealing strips 17 are not in contact with the vertical parts 182, the friction force caused by friction between the sealing strips 17 and the vertical parts 182 during pushing and pulling is reduced, and the window sash 2 is further convenient to push and pull. When the window sash 2 descends, the sealing strips 17 on the two sides of the notch of the mounting groove 5 descend along with the window sash 2 and are tightly propped against the vertical parts 182 on the two sides of the protruding part 18 again, so that the sealing performance of the combination of the window sash 2 and the window frame 1 is ensured.

The invention has the following beneficial effects:

1. the first sealant and the second sealant avoid direct contact of the first section 31 and the second section 41 when the two sashes 2 are closed, noise generated by direct contact of the first section 31 and the second section 41 is reduced, and meanwhile, when the sashes 2 are closed, the first sealing rubber strip 32 is abutted to the second raised strip 43 and the second sealing rubber strip 42 is abutted to the first raised strip 33, so that no gap exists at the joint of the first connecting part 3 and the second connecting part 4, air tightness and water tightness between the two sashes 2 are ensured, and the air-tightness and water tightness sealing structure has the advantages of low noise, and excellent air tightness and water tightness;

2. when the window sash 2 needs to be pushed and pulled, the window sash 2 is lifted to enable the window frame 21 to be separated from the sealing gasket 16, so that the friction force caused by the friction between the window frame 21 and the sealing gasket 16 during pushing and pulling is reduced, the driving force required by pushing the window frame 1 is obviously reduced, and the window sash 2 is convenient to push and pull; when the window sashes 2 are closed, the window sashes 2 are reset through the connecting rod units 8, so that the bottoms of the window frame 21 are tightly propped against the sealing gaskets 16 again, the sealing performance between the two window sashes 2 is further guaranteed, and the structural design is ingenious;

3. when the window sash 2 is closed, the sealing strip 17 is abutted against the vertical part 182 of the protruding part 18, so that the air tightness between the window sash 2 and the window frame 1 is ensured; when the window sash 2 needs to be opened, the window sash 2 is lifted to separate from the vertical part 182 by the sealing strip 17, the abrasion of the sealing strip 17 is reduced, and the driving force required when the window frame 1 is pushed is obviously reduced, so that the window sash 2 is easy to push and pull, the air tightness of the window sash is also ensured, and the window sash is ingenious in structural design

4. By designing the pulley 6 and the sliding rail 7, the sliding friction between the window sash 2 and the window frame 1 is converted into rolling friction, the friction force between the window sash 2 and the window frame 1 is reduced, the driving force required when the window frame 1 is pushed is remarkably reduced, the window sash 2 is convenient to push and pull, and meanwhile, the abrasion between the window sash 2 and the window frame 1 is also reduced. The pulley 6 is locked and unlocked by the lifting of the foot support 9, so that the stability of combination between the window sash 2 and the window frame 1 is ensured;

5. by arranging the connecting rod unit 8, the vertical rod 82 drives the horizontal rod 81 to move, so that the driving force required for driving the window sash 2 to lift is reduced, and the labor-saving effect is achieved;

6. through setting up ramp 12 and movable block 13, movable block 13 is fixed with connecting rod 14, changes the horizontal motion of horizontal pole 81 into the vertical motion of heel brace 9 to change the vertical motion of casement 2, reach the purpose that promotes heel brace 9 and casement 2, structural design is reasonable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting sliding door comprises a window frame (1) and two window sashes (2) which slide in the window frame (1) in parallel, the window sash (2) comprises a window frame (21) and glass (22) fixed in the window frame (21), it is characterized in that a first connecting part (3) and a second connecting part (4) for sealing a gap between the two window sashes (2) are arranged between the two window sashes, the first connecting part (3) comprises a first section bar (31) and a first sealing rubber strip (32), the second connecting part (4) comprises a second section bar (41), the first section bar (31) and the second section bar (41) are respectively fixed at two ends which are close to each other when the two window sashes (2) are in a closed state, one end, facing the first section bar (31), of the second section bar (41) is provided with a second convex strip (43) matched with the first sealing rubber strip (32).

2. A lifting sliding door according to claim 1, characterised in that the second section bar (41) also comprises a second sealing bead (42), the end of the first section bar (31) facing the second section bar (41) being provided with a first bead (33) cooperating with the second sealing bead (42).

3. A lifting sliding door and window according to claim 1, characterized in that the bottom of the sash (2) is provided with a plurality of pulleys (6), the inward side of the frame (1) is provided with a slide rail (7) engaged with the pulleys (6), the bottom of the sash (2) is provided with at least one foot support (9) for locking or unlocking the pulleys (6) by lifting, a lifting device for driving the foot support (9) to lift is arranged between the frame (1) and the sash (2), a moving space for lifting the sash (2) upwards is arranged between the top of the sash (2) and the frame (1), and the foot support (9) is fixed with the sash (2) to lift the sash (2).

4. A lifting sliding door according to claim 3, characterised in that the bottom of the frame (1) between the two sashes (2) is provided with a gasket (16), that the bottom of the jamb (21) is separated from the gasket (16) when the sashes (2) are in the lifted condition, and that the bottom of the jamb (21) abuts against the gasket (16) when the sashes (2) are in the locked condition.

5. A lifting sliding door and window according to claim 3, characterised in that the outside of the jamb (21) is provided with a sealing strip (17), the inside of the frame (1) is protrudingly provided with a protrusion (18) for cooperating with the jamb (21) to compress the sealing strip (17), the sealing strip (17) is disengaged from the protrusion (18) when the sash (2) is in the lifted state, and the sealing strip (17) abuts against the protrusion (18) when the sash (2) is in the locked state.

6. A lifting sliding door and window according to claim 5, characterized in that the outside of the jamb (21) is recessed inwards towards the glass (22) forming a mounting groove (5), the sealing strip (17) is provided with two symmetrical inner side walls at the notch of the mounting groove (5), the protruding portion (18) partially extends into the mounting groove (5) and a gap is formed between the top of the protruding portion and the bottom of the mounting groove (5), the protruding portion (18) comprises a horizontal portion (181) and two vertical portions (182), the two vertical portions (182) are vertically located at both sides of the horizontal portion (181), the sealing strip (17) is separated from the vertical portions (182) when the window sash (2) is in the lifted state, and the sealing strip (17) abuts against the vertical portions (182) when the window sash (2) is in the locked state.

7. A lifting sliding door according to claim 3, characterized in that the lifting device comprises a link unit (8), the link unit (8) comprises a horizontal rod (81), the pulley (6) is rotatably connected with the horizontal rod (81), a movable block (13) is fixed on the horizontal rod (81), an inclined rail (12) for the movable block (13) to slide is arranged on the foot support (9), and the movable block (13) is matched with the inclined rail (12) to realize the lifting of the foot support (9).

8. Lifting sliding door according to claim 7, characterized in that the link unit (8) further comprises a vertical rod (82), a short rod (83) and a corner piece (84), wherein support blocks are provided at the corners of the sash (2), the middle part of the corner piece (84) is hinged to the support blocks, the two ends of the corner piece (84) are hinged to the vertical rod (82) and the short rod (83), respectively, and the horizontal rod (81) is hinged to the end of the short rod (83) remote from the corner piece (84).

9. Lifting sliding door according to claim 8, characterized in that the side of the sash (2) provided with the vertical rod (82) is provided with a transmission lock (15), said transmission lock (15) comprising a transmission rod (151) and a lifting handle, said vertical rod (82) being fixed with the transmission rod (151).

10. A lifting sliding door according to claim 7, characterised in that the ramp (12) is arranged in the foot support (9) and that the ramp (12) extends through the side wall of the foot support (9).