CN220059286U - Door frame and door subassembly - Google Patents

Abstract

The utility model discloses a door frame and a door assembly, wherein the door frame is suitable for being matched with a sliding door, the sliding door slides along the sliding direction, the door frame comprises a cross beam and an abutting piece, the cross beam is provided with two first surfaces parallel to the sliding direction and the vertical direction, and an imbedding space for the sliding door to extend from the lower part is formed between the two first surfaces; the number of the abutting pieces is two, the two abutting pieces are arranged in opposite directions, and the two abutting pieces are respectively provided with flexible abutting parts which extend along the sliding direction and protrude out of the two first surfaces; when the sliding door stretches into the imbedded space from the lower side, the front surface and the back surface of the door body are respectively abutted with the two flexible abutting parts, the flexible abutting parts deform at the moment, and the two flexible abutting parts are respectively abutted on the front surface and the back surface of the sliding door, so that the sliding door is prevented from shaking, noise is reduced, and the two flexible abutting parts can be abutted more tightly due to the force of restoring deformation.

Description

Door frame and door subassembly

Technical Field

The utility model relates to the field of household products, in particular to a door frame and a door assembly.

Background

In the prior art, when the sliding door is used, gaps are easily generated between the cross beam and the sliding door, so that the sliding door is easy to rub with the cross beam during use, and larger noise is generated.

Disclosure of Invention

The present utility model is directed to overcoming the above-mentioned drawbacks or problems in the prior art and providing a door frame and door assembly.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

in one aspect, a door frame adapted to mate with a sliding door having a sliding direction and sliding relative to the door frame in the sliding direction includes

The cross beam is provided with two first surfaces parallel to the sliding direction and the vertical direction, and an imbedding space for the sliding door to extend from the lower part is formed between the two first surfaces;

the two abutting pieces are arranged in opposite directions, are arranged on the cross beam, and are respectively provided with flexible abutting parts which extend along the sliding direction and protrude out of the two first surfaces; the two flexible abutting parts are respectively suitable for abutting against the front surface and the back surface of the sliding door, and when the two flexible abutting parts do not abut against the front surface and the back surface of the sliding door, the distance between the two flexible abutting parts is smaller than the thickness of the sliding door.

The second scheme is based on the first scheme, the cross beam is provided with two mounting grooves extending along the sliding direction, the two mounting grooves are oppositely arranged and respectively opened on the two first surfaces, and each mounting groove is also provided with a limiting surface facing the bottom of the groove; the abutting piece is provided with an inserting part which extends along the sliding direction and is fixedly connected with the flexible abutting part, the inserting part is inserted into the mounting groove and is suitable for abutting against the limiting surface, and the flexible abutting part extends out of the opening of the mounting groove to protrude out of the first surface.

The third scheme is based on the second scheme, and the clamping device further comprises two clamping blocks and two fasteners, wherein the two clamping blocks are respectively positioned at two sides of the abutting piece, two inserting parts are respectively arranged at two sides of each clamping block, and the two inserting parts are respectively matched with the two mounting grooves in an inserting way so as to abut against the inserting parts along the sliding direction; the two fasteners are in one-to-one correspondence with the two clamping blocks and are used for locking the clamping blocks to the cross beam. According to the fourth scheme, based on the third scheme, the clamping block is flexible and is provided with a guide groove and a clamping groove which are suitable for the sliding door to sequentially enter along the sliding direction, the guide groove is connected with the clamping groove, and the distance between two groove walls of the guide groove is gradually reduced along the direction close to the clamping groove; when the sliding door does not enter the clamping groove, the distance between the two groove walls of the clamping groove is smaller than the thickness of the sliding door.

The fifth scheme is based on the fourth scheme, and the sliding door further comprises a side frame and a sealing strip, wherein the side frame extends along the vertical direction, and the sealing strip is arranged on the side frame and is suitable for being propped against the sliding door when the sliding door is clamped by the clamping groove.

According to the sixth scheme, based on the fifth scheme, the sealing strip is provided with an arc-shaped wall protruding towards the direction of the sliding door and a noise reduction strip which is connected with the arc-shaped wall and is suitable for being propped against the side frame along the sliding direction.

According to the seventh scheme, based on the sixth scheme, the side frame is further provided with an exhaust hole, so that when the sliding door is propped against the arc-shaped wall, air between the arc-shaped wall and the side frame is exhausted.

According to the eighth scheme, based on the sixth scheme, the sealing strip is further provided with two sealing walls extending along the vertical direction, the two sealing walls are respectively located at two sides of the arc-shaped wall and are connected with the arc-shaped wall, the side frame is provided with a vertical groove extending along the vertical direction, a notch of the vertical groove faces the sliding door, the two sealing walls are respectively suitable for propping against two side groove walls of the vertical groove, and the noise reduction strip is suitable for propping against the groove bottom of the vertical groove.

A ninth aspect is a door assembly, comprising a sliding door and a door frame according to any one of the first to eighth aspects, wherein the sliding door is slidably engaged with the door frame in a sliding direction.

According to the tenth scheme, based on the ninth scheme, the door frame further comprises a supporting piece, the supporting piece and the cross beam are oppositely arranged and used for supporting the sliding door, the supporting piece is provided with a guide rail extending along the sliding direction, the section of the guide rail is in an inverted U shape, the sliding door comprises a pulley, and the pulley is located on the guide rail and provided with a U-shaped annular groove matched with the guide rail.

From the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:

1. scheme one: the cross beam is provided with two first surfaces parallel to the sliding direction and the vertical direction, and an imbedding space for the sliding door to extend from the lower part is formed between the two first surfaces; the number of the abutting pieces is two, the two abutting pieces are arranged in opposite directions, and the two abutting pieces are respectively provided with flexible abutting parts which extend along the sliding direction and protrude out of the two first surfaces; when the sliding door stretches into the imbedded space from the lower side, the front surface and the back surface of the door body are respectively abutted with the two flexible abutting parts, the flexible abutting parts deform at the moment, and the two flexible abutting parts are respectively abutted on the front surface and the back surface of the sliding door, so that the sliding door is prevented from shaking, noise is reduced, and the two flexible abutting parts can be abutted more tightly due to the force of restoring deformation.

2. The second scheme is that the cross beam is provided with two mounting grooves extending along the sliding direction, the two mounting grooves are oppositely arranged and respectively opened on the two first surfaces, and each mounting groove is also provided with a limiting surface facing the bottom of the groove; the abutting piece is provided with an inserting part which extends along the sliding direction and is fixedly connected with the flexible abutting part, and the inserting part is inserted into the mounting groove and is suitable for abutting against the limiting surface so as to prevent the abutting piece from being separated from the mounting groove along the front-rear direction, thereby completing the mounting of the abutting piece.

3. The third scheme is that the two clamping blocks are respectively positioned at two sides of the abutting piece, two inserting parts are respectively arranged at two sides of each clamping block, and the two inserting parts are respectively matched with the two mounting grooves in an inserting way so as to abut against the inserting parts along the sliding direction; the two fasteners and the two clamping blocks are in one-to-one correspondence and used for locking the clamping blocks on the cross beam, and after the structure is finished, the abutting piece cannot be separated from the mounting groove along the sliding direction, so that the use stability of the abutting piece is ensured.

4. The fourth scheme is that the clamping block is flexible and is provided with a guide groove and a clamping groove which are suitable for the sliding door to sequentially enter along the sliding direction, the guide groove is connected with the clamping groove, and the distance between the two groove walls of the guide groove is gradually reduced along the direction close to the clamping groove so as to guide the door to the clamping groove; when the sliding door does not enter the clamping groove, the distance between the two groove walls of the clamping groove is smaller than the thickness of the sliding door, when the sliding door enters the clamping groove, the two groove walls of the clamping groove are stretched by the power of the sliding door, so that the speed reduction of the sliding door is realized, meanwhile, the clamping piece is deformed in a recovery mode, the force for recovering the deformation acts on the sliding door, the sliding door is clamped, the sliding door cannot be moved easily, and the stable closing state is ensured.

5. The fifth scheme is that the sealing strip is installed in the side frame and is suitable for propping against the sliding door when the sliding door is clamped by the clamping groove, and the sliding door is not easy to slide due to the fact that the sliding door is clamped by the clamping groove, so that the sealing strip can be propped against all the time, the sealing state is kept, and water in the door assembly is prevented from overflowing from the position. The sealing strip extends along the vertical direction, so that sealing can be realized from top to bottom.

6. The scheme six, the arc wall is deformed and is realized sealedly with the sliding door laminating when being impacted by the sliding door to the arc wall is fallen the strip of making an uproar and is driven and support in the tank bottom of the vertical groove of side frame along the slip direction after being impacted, falls the strip of making an uproar and further unload the power to the sliding door, makes sliding door speed slow down, thereby prevents when closing the door with force sliding door power too big, and striking sealing strip and side frame lead to the sound too big.

7. The seventh scheme is that the side frame is also provided with an exhaust hole, so that when the sliding door is propped against the arc-shaped wall, air between the arc-shaped wall and the side frame is exhausted, and the phenomenon that the pressure intensity is increased due to compressed air in the deformation process of the arc-shaped wall of the sliding door is prevented, and the sliding door is rebounded to be separated from a sealing state is avoided.

8. The sealing strip is also provided with two sealing walls extending along the vertical direction, the two sealing walls are respectively positioned at two sides of the edge of the arc-shaped wall and are connected with the arc-shaped wall, and the two sealing walls are respectively suitable for propping against the groove walls at two sides of the vertical groove so as to realize sealing and prevent water from flowing out from a gap between the sealing walls and the side walls of the vertical groove.

9. The ninth scheme is that the door assembly comprises a sliding door and the door frame, and has the beneficial effects brought by the door frame.

10. The scheme ten, the door frame still includes support piece, and support piece is equipped with the guide rail that extends along slip direction, and the guide rail cross-section is the shape of falling U, and the sliding door includes the pulley, and the pulley is located the guide rail and is equipped with the U-shaped annular with the guide rail adaptation, and the U-shaped annular is contained the guide rail and is not rocked along the direction of perpendicular to slip direction and vertical direction when making the pulley slide, noise reduction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of part of a door assembly of the first embodiment;

FIG. 2 is a front view of a door assembly according to the first embodiment;

FIG. 3 is a schematic view of a door assembly at an abutment according to the first embodiment;

FIG. 4 is a schematic view of the door assembly at the clamp in the first embodiment;

FIG. 5 is a perspective view of a clamping member according to the first embodiment;

FIG. 6 is a schematic view of the door assembly at the seal in accordance with the first embodiment;

fig. 7 is a schematic view of a door assembly at a pulley according to the first embodiment.

The main reference numerals illustrate:

a door frame 10;

a cross beam 1; put into the groove 11; a first face 111; a mounting groove 12; a limiting surface 121; an abutment 2; an insertion portion 21; a flexible abutment 22; a clamping block 3; a plug-in portion 31; a guide groove 32; a holding groove 33; a fastener 4; a side frame 5; a vertical groove 51; an exhaust hole 52; a sealing strip 6; an arc-shaped wall 61; noise reducing bars 62; a sealing wall 63; a support 7; a guide rail 71;

a sliding door 20;

a door body 8; a pulley 9; a U-shaped ring groove 91.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is to be understood that the described embodiments are preferred embodiments of the utility model and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without creative efforts, are within the protection scope of the present utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

1-7, a door assembly includes a door frame 10 and a sliding door 20.

The sliding door 20 is slidably engaged with the door frame 10 in a sliding direction, which is a left-right direction in this embodiment. Referring to fig. 2 and 7, the sliding door 20 includes a door body 8 and a pulley 9, the pulley 9 is installed at the bottom end of the door body 8, and the pulley 9 is provided with a U-shaped ring groove 91.

A door frame 10 includes a cross beam 1, an abutment 2, a clamp block 3, a fastener 4, a side frame 5, a sealing strip 6, and a support 7.

Referring to fig. 3, the cross beam 1 is provided with a placement groove 11 and a mounting groove 12 extending in the sliding direction and penetrating the cross beam 1 in the sliding direction, and two groove walls of the placement groove 11 disposed in front-rear opposite to each other form two first faces 111 parallel to the sliding direction and the vertical direction, which is a direction perpendicular to the ground, the front-rear direction being a direction perpendicular to the sliding direction and the vertical direction. An insertion space into which the sliding door 20 is inserted from below is formed between the two first surfaces 111. The number of the mounting grooves 12 is two, the two mounting grooves 12 are oppositely arranged and respectively open on the two first surfaces 111, so that the mounting grooves 12 are communicated with the placing space, and each mounting groove 12 is also provided with a limiting surface 121 facing the bottom of the groove.

Referring to fig. 3, the number of the abutting pieces 2 is two and arranged opposite to each other, the two abutting pieces 2 are both mounted on the cross beam 1, the two abutting pieces 2 are both provided with an insertion portion 21 and a flexible abutting portion 22 extending along the sliding direction, the insertion portion 21 and the flexible abutting portion 22 are fixedly connected into a whole, the insertion portion 21 is inserted into the mounting groove 12 along the sliding direction and is suitable for abutting against the limiting surface 121 so as to prevent the mounting groove 12 from being separated from the front and rear direction, and the flexible abutting portion 22 protrudes from the opening of the mounting groove 12 so as to protrude from the first surface 111. In actual use, the abutment 2 is a wool top, and the portion of the wool top having the fur forms the flexible abutment 22. When the two flexible abutting portions 22 do not abut against the front and back sides of the sliding door 20, the distance between the two flexible abutting portions 22 is smaller than the thickness of the sliding door 20, when the sliding door 20 stretches into the insertion space from below, the front and back sides of the door body 8 abut against the two flexible abutting portions 22 respectively, at this time, the flexible abutting portions 22 deform, the two flexible abutting portions 22 abut against the front and back sides of the sliding door 20 respectively, so that the sliding door 20 is prevented from shaking, noise is reduced, and the two flexible abutting portions 22 can abut against more tightly due to the force of restoring deformation.

Referring to fig. 1 and 4, the number of the clamping blocks 3 is two, the two clamping blocks 3 are respectively located at two sides of the abutting piece 2, two plugging portions 31 are respectively arranged at front and rear sides of each clamping block 3, the two plugging portions 31 are respectively plugged and matched with the two mounting grooves 12 to abut against the insertion portion 21 along the sliding direction, the two clamping blocks 3 are arranged to abut against two ends of the insertion portion 21 at the same time, and the abutting piece 2 is prevented from being separated from the mounting grooves 12 along the sliding direction.

Referring to fig. 4 and 5, the clamping block 3 is flexible and is provided with a guide groove 32 and a clamping groove 33 which are suitable for the sliding door 20 to sequentially enter along the sliding direction, the guide groove 32 and the clamping groove 33 are connected, the notch is downward, and the guide groove 32 also penetrates through the end surface of the clamping block 3 along the sliding direction for the door body 8 to enter; the distance between the front and rear groove walls of the guide groove 32 is gradually reduced along the direction approaching the clamping groove 33 so as to guide the door to the clamping groove 33; when the sliding door 20 does not enter the clamping groove 33, the distance between the two groove walls of the clamping groove 33 is smaller than the thickness of the sliding door 20, when the sliding door 20 enters the clamping groove 33, the two groove walls of the clamping groove 33 are propped up by the power of the sliding door 20, so that the sliding door 20 is decelerated, meanwhile, the clamping piece is deformed in a recovery mode, the force for recovering the deformation acts on the sliding door 20, so that the sliding door 20 is clamped, cannot easily move, and the closing state is stable.

Referring to fig. 1, the fastening members 4 are in one-to-one correspondence with the two clamping blocks 3 and are used for locking the clamping blocks 3 to the beam 1, so that the clamping blocks 3 cannot be separated from the beam 1, in this embodiment, the fastening members 4 are screws, and for increasing the firmness, the number of the fastening members 4 can be more.

The number of parts corresponds to one sliding door 20, and when the door assembly has a plurality of sliding doors 20, the number of parts can be increased accordingly.

Referring to fig. 6, the side frames 5 extend in the vertical direction in two in number, and are provided with vertical grooves 51 extending in the vertical direction and penetrating the side frames 5 in the vertical direction, the vertical grooves 51 being notched toward the sliding door 20.

Referring to fig. 6, the sealing strip 6 extends in the vertical direction, and the sealing strip 6 is mounted in the vertical groove 51 of the side frame 5 and is adapted to abut against the sliding door 20 when the sliding door 20 is clamped by the clamping groove 33, and the sliding door 20 is not easily clamped by the clamping groove 33 at this time, so that the sealing strip 6 can always abut against, maintain a sealing state, and prevent water in the door assembly from overflowing from the place. Since the sealing strip 6 extends in the vertical direction, sealing is achieved from top to bottom.

The weather strip 6 is provided with an arc-shaped wall 61 protruding toward the sliding door 20 and a noise reduction strip 62 connected to the arc-shaped wall 61 and adapted to abut against the side frame 5 in the sliding direction. The arc wall 61 and the noise reduction strip 62 extend along the vertical direction and are approximately in an 'epsilon' -shape on a plane perpendicular to the vertical direction, the arc wall 61 deforms and is attached to the sliding door 20 to realize sealing when being impacted by the sliding door 20, the noise reduction strip 62 is driven after the arc wall 61 is impacted and is abutted to the bottom of the vertical groove 51 of the side frame 5 along the sliding direction, the noise reduction strip 62 further unloads the sliding door 20, so that the speed of the sliding door 20 is slowed down, the sliding door 20 is prevented from being excessively powered when the door is closed with force, and the noise is excessively generated when the sealing strip 6 and the side frame 5 are impacted.

Referring to fig. 6, in the present embodiment, preferably, the side frame 5 is further provided with an air vent hole 52, and the air vent hole 52 is disposed at the bottom of the vertical groove 51, so that when the sliding door 20 abuts against the arc wall 61, air between the arc wall 61 and the side frame 5 is exhausted, thereby preventing the phenomenon that the pressure of compressed air increases during the deformation process of the arc wall 61 by the sliding door 20, and the sliding door 20 rebounds and breaks away from the sealing state.

The sealing strip 6 is further provided with two sealing walls 63 extending along the vertical direction, the two sealing walls 63 are respectively positioned at two sides of the edge of the arc-shaped wall 61 and are connected with the arc-shaped wall 61, the two sealing walls 63 are respectively suitable for being abutted against the groove walls at two sides of the vertical groove 51 so as to realize sealing, and water is prevented from flowing out from a gap between the sealing walls 63 and the side walls of the vertical groove 51.

Referring to fig. 7, the support 7 is disposed opposite to the cross beam 1 and is used for supporting the sliding door 20, the support 7 is provided with a guide rail 71 extending along a sliding direction, the cross section of the guide rail 71 is in an inverted U shape, the pulley 9 is seated on the guide rail 71 and is provided with a U-shaped ring groove 91 adapted to the guide rail 71, the U-shaped ring groove 91 surrounds a rolling axis thereof, and the U-shaped ring groove 91 accommodates the guide rail 71 so that the pulley 9 does not shake along a direction perpendicular to the sliding direction and the vertical direction when sliding, thereby reducing noise.

The foregoing description of the embodiments and description is presented to illustrate the scope of the utility model, but is not to be construed as limiting the scope of the utility model. Modifications, equivalents, and other improvements to the embodiments of the utility model or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the utility model or the teachings of the embodiments, are intended to be included within the scope of the utility model, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims (10)

1. A door frame adapted to cooperate with a sliding door (20), the sliding door (20) having a sliding direction and sliding relative to the door frame in the sliding direction, characterized in that: comprising

The cross beam (1) is provided with two first surfaces (111) parallel to the sliding direction and the vertical direction, and an imbedding space for the sliding door (20) to extend from the lower part is formed between the two first surfaces (111);

the number of the abutting pieces (2) is two, the abutting pieces are arranged in opposite directions, the two abutting pieces (2) are arranged on the cross beam (1), and the two abutting pieces (2) are respectively provided with flexible abutting parts (22) which extend along the sliding direction and protrude out of the two first surfaces (111); the two flexible abutting parts (22) are respectively suitable for abutting against the front surface and the back surface of the sliding door (20), and when the two flexible abutting parts (22) do not abut against the front surface and the back surface of the sliding door (20), the distance between the two flexible abutting parts (22) is smaller than the thickness of the sliding door (20).

2. A door frame as claimed in claim 1, wherein: the cross beam (1) is provided with two mounting grooves (12) extending along the sliding direction, the two mounting grooves (12) are oppositely arranged and are respectively opened on the two first surfaces (111), and each mounting groove (12) is also provided with a limiting surface (121) facing the bottom of the groove; the abutting piece (2) is provided with an insertion part (21) extending along the sliding direction and fixedly connected with the flexible abutting part (22), the insertion part (21) is inserted into the mounting groove (12) and is suitable for abutting against the limiting surface (121), and the flexible abutting part (22) protrudes out of the opening of the mounting groove (12) to protrude out of the first surface (111).

3. A door frame as claimed in claim 2, wherein: the clamping device further comprises two clamping blocks (3) and two fastening pieces (4), wherein the two clamping blocks (3) are respectively positioned at two sides of the abutting piece (2), two inserting parts are respectively arranged at two sides of each clamping block (3), and the two inserting parts are respectively matched with the two mounting grooves (12) in an inserting way so as to be abutted to the inserting parts (21) along the sliding direction; the two fasteners (4) are in one-to-one correspondence with the two clamping blocks and are used for locking the clamping blocks (3) to the cross beam (1).

4. A door frame as claimed in claim 3, wherein: the clamping block (3) is flexible and is provided with a guide groove (32) and a clamping groove (33) which are suitable for the sliding door (20) to sequentially enter along the sliding direction, the guide groove (32) is connected with the clamping groove (33), and the distance between two groove walls of the guide groove (32) is gradually reduced along the direction approaching to the clamping groove (33); when the sliding door (20) does not enter the clamping groove (33), the distance between the two groove walls of the clamping groove (33) is smaller than the thickness of the sliding door (20).

5. A door frame as claimed in claim 4, wherein: the sliding door comprises a sliding door body and is characterized by further comprising a side frame (5) and a sealing strip (6) which extend along the vertical direction, wherein the sealing strip (6) is arranged on the side frame (5) and is suitable for abutting against the sliding door body (20) when the sliding door body (20) is clamped by the clamping groove (33).

6. A door frame as claimed in claim 5, wherein: the sealing strip (6) is provided with an arc-shaped wall (61) protruding towards the sliding door (20) and a noise reduction strip (62) connected with the arc-shaped wall (61) and suitable for being abutted against the side frame (5) along the sliding direction.

7. A door frame as claimed in claim 6, wherein: the side frame (5) is also provided with an exhaust hole (52) so that when the sliding door (20) is propped against the arc-shaped wall (61), air between the arc-shaped wall (61) and the side frame (5) is exhausted.

8. A door frame as claimed in claim 6, wherein: the sealing strip (6) is further provided with two sealing walls (63) extending along the vertical direction, the two sealing walls (63) are respectively located at two sides of the arc-shaped wall (61) and are connected with the arc-shaped wall (61), the side frame (5) is provided with a vertical groove (51) extending along the vertical direction, a notch of the vertical groove (51) faces the sliding door (20), the two sealing walls (63) are respectively suitable for propping against two side groove walls of the vertical groove (51), and the noise reduction strip (62) is suitable for propping against the groove bottom of the vertical groove (51).

9. A door assembly, characterized in that: comprising a sliding door (20) and a door frame (10) according to any of claims 1-8, said sliding door (20) being in sliding engagement with said door frame (10) in a sliding direction.

10. A door assembly as claimed in claim 9, wherein: the door frame (10) further comprises a supporting piece (7), the supporting piece (7) and the cross beam (1) are oppositely arranged and used for supporting the sliding door (20), the supporting piece (7) is provided with a guide rail (71) extending along the sliding direction, the section of the guide rail (71) is in an inverted U shape, the sliding door (20) comprises a pulley (9), and the pulley (9) is located on the guide rail (71) and provided with a U-shaped annular groove (91) matched with the guide rail (71).