Door frame mechanisms and sliding doors

Abstract

The utility model discloses a door frame mechanism and a sliding door, wherein the door frame mechanism comprises a side frame assembly and a top beam assembly, wherein two side frame assemblies are provided and are respectively arranged at intervals on the left and right sides, wherein the side frame assembly is used to be arranged against a wall and connected to the wall body, wherein the top beam assembly comprises a first frame beam and a second frame beam, wherein the left and right ends of the first frame beam are respectively connected and fixed to the two side frame assemblies, wherein the first frame beam is provided with a first connecting plate, wherein the second frame beam is provided with a second connecting plate and a matching structure for sliding connection with a door body is provided below the first frame beam, wherein the first connecting plate is located on the upper side of the second connecting plate and the middle part of the first connecting plate is connected and fixed to the middle part of the second connecting plate, and the end of the second frame beam can move relative to the side frame assembly. The top beam assembly adopts a double beam structure, wherein the bending deformation mainly acts on the first frame beam connected to the side frame assembly, and the second frame beam is used to slide and cooperate with the door body, which is conducive to keeping the sliding track of the door body horizontal, avoiding the deflection of the door body and causing a gap between the side frame assembly, and is convenient for use.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding door devices, in particular to a door frame mechanism and a sliding door. Background Art

[0002] For existing sliding doors with a hoisting structure, a hoisting pulley assembly is provided on the upper part of the door body, and a slide groove or a slide rail that cooperates with the pulley assembly is provided on the top beam of the door frame. The door body is slidably connected to the top beam through the pulley assembly, which is conducive to reducing the size of the threshold or eliminating the threshold, and realizing barrier-free design. For some sliding doors, such as shower doors and other sliding doors whose top beams are not connected to the ceiling or wall, since the door body is hoisted and installed on the top beam, the top beam is affected by the gravity of the door body, and the middle part is easily bent and deformed downward, thereby causing the slide groove or the slide rail thereon to bend, so that the left and right sides of the upper part of the door body cannot remain horizontal, deflection occurs, and a gap appears between the door body and the side frame. There are two main conventional solutions to the above-mentioned bending and deformation of the top beam: 1. Increasing the upper and lower height dimensions of the top beam to enhance its bending resistance, but this method will increase the exposed area of ​​the top beam, affecting the overall appearance and making it difficult to meet users' pursuit of an extremely narrow frame style; 2. Changing the material of the top beam to use a stronger material, but this method will make the materials of the top beam and the side frame different, which will easily lead to color difference and affect the overall appearance. If the top beam and the side frame are all replaced with a stronger material, the cost of the product will be greatly increased, making it inconvenient for production and application. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a door frame mechanism, wherein the top beam assembly adopts a double beam structure, the bending deformation mainly acts on the first frame beam connected and fixed to the side frame assembly, and the second frame beam is used to slide with the door body, which is conducive to keeping the sliding track of the door body horizontal, avoiding the deflection of the door body and causing a gap between the side frame assembly, and is easy to use.

[0004] The utility model also provides a sliding door with the door frame mechanism.

[0005] According to the door frame mechanism described in the embodiment of the first aspect of the utility model, it includes a side frame assembly and a top beam assembly, the side frame assemblies are provided with two and are spaced apart on the left and right, the side frame assemblies are used to be set against the wall and connected to the wall, the top beam assembly includes a first frame beam and a second frame beam, the left and right ends of the first frame beam are respectively connected and fixed to the two side frame assemblies, the first frame beam is provided with a first connecting plate, the second frame beam is provided with a second connecting plate and a matching structure for sliding connection with the upper part of the door body is provided below the second connecting plate, the first connecting plate is located on the upper side of the second connecting plate and the middle part of the first connecting plate is connected and fixed to the middle part of the second connecting plate, and the end of the second frame beam can move relative to the side frame assembly.

[0006] According to the door frame mechanism described in the embodiment of the utility model, it has at least the following beneficial effects: when in use, the two side frame assemblies are respectively arranged against the wall and connected to the wall, the left and right ends of the first frame beam are respectively connected and fixed to the two side frame assemblies, the second connecting plate is arranged on the lower side of the first connecting plate and the middle part of the second connecting plate is connected and fixed to the middle part of the first connecting plate, and the second frame beam is slidably connected to the upper part of the door body through a matching structure. Since the left and right ends of the first frame beam are fixed, when the top beam assembly is subjected to the gravity of the door body, the first frame beam is bent and deformed, and the middle part moves downward, and the middle part of the second frame beam also moves downward accordingly, but the end of the second frame beam can be movable relative to the side frame assembly, and its end is not fixed. Under the gravity of the door body, the end of the second frame beam also moves downward accordingly, thereby, the middle part and the two ends of the second frame beam move downward as a whole, and the bending deformation mainly acts on the first frame beam connected and fixed to the side frame assembly, which is conducive to keeping the sliding track of the door body horizontal, avoiding the deflection of the door body and causing a gap between the side frame assembly, and facilitating use.

[0007] According to some embodiments of the utility model, the top beam assembly is provided with an adjustment structure, and the end of the first connecting plate is connected to the end of the second connecting plate through the adjustment structure, and the adjustment structure can adjust the upper and lower distance between the end of the first connecting plate and the end of the second connecting plate.

[0008] According to some embodiments of the utility model, the adjustment structure includes a first threaded member, the first connecting plate is provided with a first threaded hole, the lower end of the first threaded member abuts against the second connecting plate, the first threaded member passes through the second connecting plate and is threadably matched with the first threaded hole.

[0009] According to some embodiments of the utility model, the adjustment structure also includes a second threaded member, the first threaded member is provided with a second threaded hole, the upper end of the second threaded member abuts against the upper side of the first connecting plate, and the second threaded member is threadedly matched with the second threaded hole.

[0010] According to some embodiments of the utility model, the adjustment structure also includes a third threaded member, a second threaded hole is provided on the first threaded member, a third connecting plate is provided above the first connecting plate on the first frame beam, the third threaded member is threadedly matched with the second threaded hole and the upper end of the third threaded member abuts against the lower side of the third connecting plate.

[0011] According to some embodiments of the present utility model, the first frame beam is provided with a first cavity with an opening at the lower side, the first connecting plate is an upper wall portion of the first cavity, and the second frame beam is arranged in the first cavity.

[0012] According to some embodiments of the utility model, the second frame beam is provided with a second cavity with left and right openings, the second connecting plate is the lower wall portion of the second cavity, and the first frame beam is arranged in the second cavity.

[0013] According to some embodiments of the present invention, the second frame beam is provided with a first slot corresponding to the door body, and the first slot is located on the upper side of the matching structure.

[0014] According to some embodiments of the utility model, a groove extending in the left-right direction is provided on the lower side of the first connecting plate, and the front and rear side walls of the groove are both inclined structures so that the groove width dimension of the groove gradually increases from top to bottom, and a convex portion adapted to the groove is correspondingly provided on the upper part of the second connecting plate.

[0015] The sliding door according to the second embodiment of the utility model comprises a door frame mechanism according to the first embodiment of the utility model.

[0016] The sliding door according to the embodiment of the utility model has at least the following beneficial effects: by adopting the above-mentioned door frame mechanism, it is helpful to keep the sliding track of the door body horizontal, avoid the deflection of the door body and cause a gap between the side frame assembly, and facilitate use.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a sliding door according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the middle sliding door;

[0021] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the middle sliding door;

[0022] Figure 4 for Figure 2 Structural schematic diagram of the middle top beam assembly;

[0023] Figure 5 for Figure 4 A schematic cross-sectional view of the middle top beam assembly in an exploded state;

[0024] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure of another embodiment of the middle top beam assembly;

[0025] Figure 7 for Figure 4 A schematic cross-sectional view of the middle top beam assembly along the left-right direction;

[0026] Figure 8 for Figure 7 A cross-sectional schematic diagram of the middle top beam assembly in use.

[0027] Reference numerals:

[0028] Side frame assembly 100;

[0029] Top beam assembly 200, first threaded hole 201, second threaded hole 202, first cavity 203, second cavity 204, first slot 205, groove 206, slide groove 207, second slot 208, first frame beam 210, first connecting plate 211, third connecting plate 212, second frame beam 220, second connecting plate 221, protrusion 222, first threaded member 231, second threaded member 232, third threaded member 233, threaded connector 234;

[0030] Door body 300, guide groove 301, pulley assembly 310, brake member 320;

[0031] Water retaining strip 410 and guide block 420 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that if it involves orientation descriptions, the orientations or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, if the words "some", "greater than", "less than", "exceed", "over", "under", "within" etc. appear, among which "some" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "over", "under", "within" etc. are understood to include the number.

[0035] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A sliding door comprises a door frame mechanism and a door body 300, wherein the door frame mechanism comprises a side frame assembly 100 and a top beam assembly 200, wherein two side frame assemblies 100 are provided and are spaced apart from each other on the left and right sides, wherein the side frame assembly 100 is used to be set against a wall and connected to the wall, and the top beam assembly 200 comprises a first frame beam 210 and a second frame beam 220, wherein the left and right ends of the first frame beam 210 are respectively connected and fixed to the two side frame assemblies 100, the first frame beam 210 is provided with a first connecting plate 211, the second frame beam 220 is provided with a second connecting plate 221 and a matching structure for sliding connection with the upper part of the door body 300 is provided below the second connecting plate 221, the first connecting plate 211 is located on the upper side of the second connecting plate 221 and the middle part of the first connecting plate 211 is connected and fixed to the middle part of the second connecting plate 221, and the end of the second frame beam 220 can move relative to the side frame assembly 100.

[0038] It is understandable that if Figure 1 , Figure 2 and Figure 3As shown, the first frame beam 210 and the second frame beam 220 are both profile structures extending in the left-right direction, the first connecting plate 211 and the second connecting plate 221 are respectively long strip structures extending in the left-right direction, the two side frame assemblies 100 are spaced apart in the left-right direction, the door body 300 is provided with two and is located between the two side frame assemblies 100, a pulley assembly 310 is provided on the upper side of each door body 300, and the matching structure is a slide groove 207 provided on the second frame beam 220 corresponding to the door body 300, and the door body 300 is slidably connected to the second frame beam 220 through the matching of the pulley assembly 310 and the slide groove 207. When in use, the two side frame assemblies 100 are respectively set against the wall and connected to the wall, the left and right ends of the first frame beam 210 are respectively connected and fixed to the two side frame assemblies 100, the second connecting plate 221 is provided on the lower side of the first connecting plate 211, and the middle part of the second connecting plate 221 is connected and fixed to the middle part of the first connecting plate 211. Refer to Figure 4 , Figure 7 and Figure 8 Since the left and right ends of the first frame beam 210 are fixed, when the top beam assembly 200 is subjected to the gravity of the door body 300, the first frame beam 210 bends and deforms, and the first connecting plate 211 bends accordingly and the middle part moves downward, and the middle part of the second connecting plate 221 is connected and fixed to the middle part of the first connecting plate 211. Therefore, the middle part of the second frame beam 220 also moves downward accordingly, but the end of the second frame beam 220 can move relative to the side frame assembly 100, and its end is not fixed. Under the gravity of the door body 300, the end of the second frame beam 220 also moves downward accordingly. As a result, the middle part and both ends of the second frame beam 220 move downward as a whole, and the bending deformation mainly acts on the first frame beam 210 connected and fixed to the side frame assembly 100, which is beneficial to keep the sliding track of the door body 300 horizontal, avoid the deflection of the door body 300 and cause a gap between the side frame assembly 100, and facilitate use.

[0039] In actual application, the first frame beam 210 and the side frame assembly 100 can be connected and fixed by a threaded structure, or by riveting, welding, plugging, etc. The specific structures such as the door body 300, the side frame assembly 100 and the top beam assembly 200 can be set accordingly according to actual use needs. They are not described in detail here and will be explained in detail below.

[0040] In some embodiments, a threaded connector 234 is provided between the middle portion of the first connecting plate 211 and the middle portion of the second connecting plate 221 and the first connecting plate 211 and the second connecting plate 221 are connected and fixed by the threaded connector 234. Figure 4 , Figure 7 and Figure 8As shown, the middle part of the first connecting plate 211 and the middle part of the second connecting plate 221 are connected and fixed by a threaded connector 234, so that the middle upper side of the second connecting plate 221 fits with the first connecting plate 211. The structure is simple, which is convenient for the connection and fixation between the two, and can also realize the detachability between the two, which is convenient for use. In actual application, the threaded connector 234 can be a bolt or a stud, which can also be used together with a nut, or a threaded hole is set on the first connecting plate 211 or the second connecting plate 221, and some hollow structures can also be set on the first connecting plate 211 and the second connecting plate 221. When designed in this way, the middle position on it refers to the middle position of the first frame beam 210 and the second frame beam 220 as a whole along the left and right direction. In addition to the above structure, the middle part of the first connecting plate 211 and the middle part of the second connecting plate 221 can also be fixed by riveting, which can be set accordingly according to actual use needs.

[0041] In some embodiments, the top beam assembly 200 is provided with an adjustment structure, and the end of the first connecting plate 211 is connected to the end of the second connecting plate 221 through the adjustment structure, and the adjustment structure can adjust the upper and lower distances between the end of the first connecting plate 211 and the end of the second connecting plate 221.

[0042] It is understandable that if Figure 7 and Figure 8 As shown, the left end of the second connecting plate 221 and the left end of the first connecting plate 211, as well as the right end of the second connecting plate 221 and the right end of the first connecting plate 211 are connected via an adjusting structure. The adjusting structure is utilized to adjust the upper and lower spacing between the end of the second connecting plate 221 and the end of the first connecting plate 211, thereby adjusting the end condition of the second frame beam 220 relative to the first frame beam 210 to adapt to the deformation of the end of the first frame beam 210, so that the end of the second frame beam 220 can be flush with the middle thereof, which is beneficial to keep the sliding track of the door body 300 horizontal and improve reliability.

[0043] Furthermore, the adjustment structure includes a first threaded member 231 , the first connecting plate 211 is provided with a first threaded hole 201 , the lower end of the first threaded member 231 abuts against the second connecting plate 221 , the first threaded member 231 passes through the second connecting plate 221 and is threadedly matched with the first threaded hole 201 .

[0044] It is understandable that if Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the first threaded hole 201 is provided at a corresponding position of the end of the first connecting plate 211 and is passed through from top to bottom. The first threaded member 231 passes through the second connecting plate 221 from bottom to top and is threadedly matched with the first threaded hole 201, and its lower end abuts against the second connecting plate 221. When in use, since the end of the second frame beam 220 can move relative to the side frame assembly 100, its end is not fixed. Under the gravity of the door body 300, the end of the second frame beam 220 will be forced to move downward. In order to avoid excessive downward movement and cause the second frame beam 220 to be arched, the first threaded member 231 cooperates with the first threaded hole 201, and the lower end of the first threaded member 231 abuts against the second connecting plate 221, which can pull the second frame beam 220, so that a structure similar to a suspension bridge is formed between the first connecting plate 211 and the second connecting plate 221. The side frame assemblies 100 on both sides are similar to the bridge towers in a suspension bridge, the first connecting plate 211 is similar to the suspension cable in a suspension bridge, the first threaded member 231 is similar to the sling in a suspension bridge, and the second connecting plate 221 is similar to the bridge deck in a suspension bridge. The first threaded member 231 can be moved up and down by screwing together, and the position of the lower end of the first threaded member 231 is adjusted accordingly. Through the second connecting plate 221, the end of the second frame beam 220 can be adjusted up and down relative to the end of the first frame beam 210, which is conducive to ensuring the level of the second frame beam 220 and improving reliability. The above structure is simple and reasonable, the thread adjustment can achieve more accurate distance adjustment, and has good self-locking performance, which is conducive to locking the position after adjustment.

[0045] In actual application, in addition to the above structure, the adjustment structure can also adjust the upper and lower positions of the second frame beam 220 by pulling the end of the second frame beam 220 with a rope to ensure its levelness. The specific settings can be made according to actual use needs.

[0046] Furthermore, the adjustment structure also includes a second threaded member 232 . The first threaded member 231 is provided with a second threaded hole 202 . The upper end of the second threaded member 232 abuts against the upper side of the first connecting plate 211 . The second threaded member 232 is threadedly matched with the second threaded hole 202 .

[0047] It is understandable that if Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, the second threaded hole 202 is provided on the first threaded member 231 and penetrates from top to bottom. The second threaded member 232 is threadedly matched with the second threaded hole 202, and its upper end abuts against the upper side of the first connecting plate 211. The lower end of the first threaded member 231 and the upper end of the second threaded member 232 are matched to sandwich the first connecting plate 211 and the second connecting plate 221. Through the threaded match between the second threaded member 232 and the first threaded member 231, the two are mutually screwed together. When the first threaded member 231 is screwed and moved up and down relative to the first connecting plate 211, the screwing area between it and the first threaded hole 201 will change accordingly. When the screwing area decreases, the connection strength between them will decrease. At this time, the second threaded member 232 can be tightened so that the upper end of the second threaded member 232 abuts against the upper side of the first connecting plate 211, increasing the connection strength between the first threaded member 231 and the first connecting plate 211, thereby enhancing the stability of the connection between the first connecting plate 211 and the second connecting plate 221.

[0048] Furthermore, the adjustment structure also includes a third threaded member 233, a second threaded hole 202 is provided on the first threaded member 231, and the first frame beam 210 is provided with a third connecting plate 212 above the first connecting plate 211, the third threaded member 233 is threadedly matched with the second threaded hole 202 and the upper end of the third threaded member 233 abuts against the lower side of the third connecting plate 212.

[0049] It is understandable that if Figure 6 As shown, Figure 6 The structure shown is another embodiment of the top beam assembly 200. The first frame beam 210 is provided with a third connecting plate 212 above the first connecting plate 211. The second threaded hole 202 passes through from top to bottom. The third threaded member 233 is threadedly matched with the second threaded hole 202 and the upper end of the third threaded member 233 abuts against the lower side of the third connecting plate 212. Thus, the third connecting plate 212 is supported by the third threaded member 233, so that the first connecting plate 211 and the second connecting plate 221 on the lower side are more stable, reducing the possibility of shaking due to the movement of the door body 300 and improving the structural stability.

[0050] Further, refer to Figure 6 The first connecting plate 211 and the third connecting plate 212 are spaced apart in the up-down direction, and a connecting portion is provided between the middle portion of the first connecting plate 211 in the front-to-back direction and the middle portion of the third connecting plate 212 in the front-to-back direction and connected by the connecting portion, so that the first connecting plate 211, the third connecting plate 212 and the connecting portion cooperate to form an "I" beam structure, thereby increasing the bending resistance of the first frame beam 210.

[0051] In some embodiments, the second frame beam 220 is used for sliding connection with a plurality of door bodies 300. The top beam assembly 200 is correspondingly provided with multiple sets of adjustment groups for the plurality of door bodies 300. Each set of adjustment groups includes a plurality of adjustment structures distributed in the left-right direction. The multiple adjustment structures in the same group are symmetrically distributed relative to the middle of the top beam assembly 200. It can be understood that, as Figure 4 、 Figure 7 and Figure 8 shown, the second frame beam 220 is slidably connected to two door bodies 300. There are two sets of adjustment groups correspondingly. The two sets of adjustment groups are respectively located above the sliding tracks of the two door bodies 300. There are also two threaded connectors 234 and they are distributed corresponding to the front and rear positions of the two door bodies 300. Each set of adjustment groups includes four adjustment structures. The four adjustment structures in the same group are symmetrically distributed in pairs left and right. In this way, the front and rear sides and the left and right ends of the second frame beam 220 are evenly stressed, reducing the possibility of its deflection or torsion and ensuring the horizontality of the sliding track of the door body 300. In actual application, if the second frame beam 220 is slidably connected to three door bodies 300, the adjustment groups can be correspondingly set to three groups, which can be specifically set according to actual usage needs.

[0052] In some embodiments, the first frame beam 210 is provided with a first cavity 203 with an open lower side. The first connecting plate 211 is the upper wall part of the first cavity 203. The second frame beam 220 is arranged in the first cavity 203.

[0053] It can be understood that, as Figure 3 、 Figure 4 and Figure 5 shown, the first frame beam 210 is provided with a first cavity 203 with an open lower side so that its cross-section is generally in a "冂"-shaped structure, increasing its bending resistance. The second frame beam 220 is arranged in the first cavity 203 to hide the second frame beam 220 and improve the appearance aesthetics. Moreover, when designed in this way, the second frame beam 220 can be made of a material with higher strength to increase its bending resistance. Due to the shielding of the first frame beam 210, when observing the top beam assembly 200 from the outside, there will be no obvious color difference problem between it and the side frame assembly 100.

[0054] In some embodiments, the second frame beam 220 is provided with a second cavity 204 with open left and right sides. The second connecting plate 221 is the lower wall part of the second cavity 204. The first frame beam 210 is arranged in the second cavity 204.

[0055] It can be understood that, as Figure 6As shown, the second frame beam 220 is provided with a second cavity 204 that is open on both the left and right sides, so that its upper part has a square tube structure, increasing its bending resistance. The first frame beam 210 is arranged in the second cavity 204 to hide the first frame beam 210 and improve the aesthetics of the appearance. Moreover, when designed in this way, the first frame beam 210 can be made of a material with higher strength to increase its bending resistance. Due to the shielding of the second frame beam 220, when observing the top beam assembly 200 from the outside, there will be no obvious color difference problem between it and the side frame assembly 100.

[0056] Further, referring to Figure 6 , second slots 208 extending downward are provided on both the front and rear sides of the second cavity 204. The front and rear sides of the first frame beam 210 extend downward and are inserted into the second slots 208, making its cross-section roughly in a "冂" shape structure, increasing the bending resistance of the first frame beam 210 and being beneficial to improving the structural stability between the first frame beam 210 and the second frame beam 220.

[0057] In some embodiments, the second frame beam 220 is provided with a first slot 205 corresponding to the door body 300, and the first slot 205 is located on the upper side of the mating structure.

[0058] It can be understood that as shown in Figure 3 , Figure 4 and Figure 5 , the first slot 205 extends in the left-right direction and is located on the upper side of the sliding fit between the second frame beam 220 and the door body 300. When in use, a braking member 320 can be arranged in the first slot 205, and by cooperating the braking member 320 with the buffer in the pulley assembly 310, the speed when the door body 300 moves in place can be reduced, improving the use safety; moreover, a plug block with higher material strength can also be arranged in the first slot 205 to increase the bending resistance of the second frame beam 220 for easy use. In actual application, the specific structure of the first slot 205 can be set according to actual use needs.

[0059] In some embodiments, a groove 206 extending in the left-right direction is provided on the lower side of the first connecting plate 211. The front and rear side walls of the groove 206 are both inclined plane structures, so that the groove width dimension of the groove 206 gradually increases in the up-down direction. A convex portion 222 adapted to the groove 206 is correspondingly provided on the upper part of the second connecting plate 221.

[0060] It can be understood that as shown in Figure 3 and Figure 5As shown, the groove 206 is provided on the upper cavity wall of the first cavity 203 and extends in the left-right direction, and its front and rear side walls are both inclined structures, so that the cross section of the groove 206 along the width direction is roughly a trapezoidal shape with a small top and a large bottom, and the upper part of the second connecting plate 221 is correspondingly provided with a convex part 222 adapted to the groove 206, thereby increasing the thickness of the upper part of the second connecting plate 221 and increasing its bending resistance. Moreover, when the groove 206 and the convex part 222 cooperate, the side wall of the inclined structure is conducive to the centering of the second frame beam 220 along the front-back direction, which is convenient for its positioning and assembly, and is easy to use. In actual application, the specific structure of the groove 206 and the convex part 222 can be set accordingly according to actual use needs.

[0061] In some embodiments, the sliding door can be applied to the shower room, referring to Figure 1 , Figure 2 and Figure 3 A water retaining strip 410 is provided at the front side of the door body 300 to prevent the water in the shower room from flowing out, making it easier to use. A guide block 420 is provided below the door body 300, and a guide groove 301 is correspondingly provided at the lower side of the door body 300. The guide block 420 is partially inserted into the guide groove 301 to guide the left and right movement of the lower side, limit the front and back swing of the lower side, and improve the stability of the movement of the door body 300.

[0062] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A door frame mechanism, characterized in that: include: Side frame assemblies, two of which are spaced apart on the left and right sides, and are used to be placed against a wall and connected to the wall; The top beam assembly includes a first frame beam and a second frame beam, the left and right ends of the first frame beam are respectively connected and fixed to the two side frame assemblies, the first frame beam is provided with a first connecting plate, the second frame beam is provided with a second connecting plate and a matching structure for sliding connection with the upper part of the door body is provided below the second connecting plate, the first connecting plate is located on the upper side of the second connecting plate and the middle part of the first connecting plate is connected and fixed to the middle part of the second connecting plate, and the end of the second frame beam can move relative to the side frame assembly.

2. The door frame mechanism according to claim 1, characterized in that: The top beam assembly is provided with an adjustment structure, and the end of the first connecting plate is connected to the end of the second connecting plate through the adjustment structure, and the adjustment structure can adjust the upper and lower distance between the end of the first connecting plate and the end of the second connecting plate.

3. The door frame mechanism according to claim 2, characterized in that: The adjustment structure includes a first threaded member, the first connecting plate is provided with a first threaded hole, the lower end of the first threaded member abuts against the second connecting plate, the first threaded member passes through the second connecting plate and is threadably matched with the first threaded hole.

4. The door frame mechanism according to claim 3, characterized in that: The adjustment structure further includes a second threaded member, a second threaded hole is provided on the first threaded member, an upper end of the second threaded member abuts against an upper side of the first connecting plate, and the second threaded member is threadedly matched with the second threaded hole.

5. The door frame mechanism according to claim 3, characterized in that: The adjustment structure also includes a third threaded member, a second threaded hole is provided on the first threaded member, and a third connecting plate is provided above the first connecting plate on the first frame beam. The third threaded member is threadedly matched with the second threaded hole and the upper end of the third threaded member abuts against the lower side of the third connecting plate.

6. The door frame mechanism according to claim 1, characterized in that: The first frame beam is provided with a first cavity with an opening at the lower side, the first connecting plate is an upper wall portion of the first cavity, and the second frame beam is arranged in the first cavity.

7. The door frame mechanism according to claim 1, characterized in that: The second frame beam is provided with a second cavity with openings on left and right sides, the second connecting plate is the lower wall portion of the second cavity, and the first frame beam is arranged in the second cavity.

8. The door frame mechanism according to claim 1, characterized in that: The second frame beam is provided with a first slot corresponding to the door body, and the first slot is located on the upper side of the matching structure.

9. The door frame mechanism according to claim 1, characterized in that: The lower side of the first connecting plate is provided with a groove extending in the left-right direction, and the front and rear side walls of the groove are both inclined structures so that the groove width gradually increases from top to bottom, and the upper part of the second connecting plate is correspondingly provided with a convex portion adapted to the groove.

10. A sliding door, characterized in that: Comprising a door frame mechanism according to any one of claims 1 to 9.

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