Multi-angle limiting sliding support

Abstract

The application provides a multi-angle limiting sliding support, which comprises a sliding rail assembly, a supporting assembly and a sliding block assembly. The sliding rail assembly comprises a main sliding rail, and the main sliding rail is provided with a sliding groove and a plurality of clamping notches. The supporting assembly comprises a supporting arm and a main cantilever, and the head of the main cantilever is hinged to the supporting arm. The sliding block assembly comprises a limiting block, a fixed plate, a connecting block and an elastic member. The limiting block is provided with a first protrusion and an avoiding notch. The limiting block and the fixed plate are embedded into the sliding groove respectively. The elastic member is arranged between the limiting block and the bottom plate of the main sliding rail. The connecting block is stacked on the fixed plate, and one end of the connecting block is movably connected with the limiting block. The tail of the main cantilever, the connecting block and the fixed plate are connected through a pin shaft, and the sliding block assembly is driven by the main cantilever to slide in the sliding groove. The fixed plate prevents the first protrusion from being embedded into the clamping notch by being inserted into the avoiding notch of the limiting block. The application can make the window closing and the opening angle adjustment relatively convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of door and window hardware, and more particularly to a multi-angle limiting sliding support. BACKGROUND

[0002] The sliding support is a device for supporting and controlling the opening and closing of a window, which not only provides support, but also helps to adjust the opening angle of the window and maintain stability.

[0003] For example, the Chinese utility model patent with the application number 200920050715.2 discloses a sliding support, which is provided with a plurality of positioning sockets on the outer shell, the inner shell can slide along the outer shell, the inner shell is provided with a positioning plate, the tip of the positioning plate is provided with a beveled structure, the positioning plate is driven by an elastic device to make the tip extend out of the positioning socket and fix the positioning plate relative to the outer shell, or continue to push the inner shell forward to make the tip retract into the inner shell. When the window door needs to be closed, the telescopic support needs to be pushed to the maximum angle to make the tip retract into the sliding plate and press against the side wall of the sliding plate, so that the positioning plate is in the unlocked state, and then the window door is pulled back to the initial position. Moreover, the sliding support can only adjust the sliding direction of the positioning plate in one direction, and when the opening angle of the window door needs to be reduced, the window door still needs to be closed, and then the installation position of the positioning plate and the different positioning sockets is gradually adjusted to adjust the opening angle of the window door, which is relatively troublesome to operate. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a new multi-angle limiting sliding support to solve the problem of troublesome positioning operation of the above-mentioned sliding support.

[0005] The technical solution for solving the above-mentioned technical problem is to provide a multi-angle limiting sliding support, which comprises:

[0006] The sliding rail assembly comprises a main sliding rail in the form of a strip, the main sliding rail comprises a bottom plate, two side plates respectively connected to the width direction of the bottom plate, and two folded edges respectively connected to the top end of the side plates, and the two folded edges, the two side plates and the bottom plate are connected in the shape of C, and a sliding groove along the length direction of the main sliding rail is formed between the two folded edges, the two side plates and the bottom plate; a plurality of clamping notches are formed on the folded edge and communicated with the sliding groove, and the plurality of clamping notches are distributed along the length direction of the main sliding rail.

[0007] The support assembly comprises a supporting arm and a main supporting arm, and the first end of the main supporting arm is hinged to the supporting arm.

[0008] The slider assembly comprises a limiting block, a fixed plate, a connecting block and an elastic member; the limiting block is provided with an avoiding notch and two first protrusions, the two first protrusions protrude from the two side edges of the limiting block in the width direction and correspond to the clamping notches, and the avoiding notch extends from the lower surface of the limiting block to the front end surface;

[0009] The limiting block and the fixed plate are respectively slidably embedded into the sliding groove, and the avoiding notch on the limiting block faces the fixed plate; the elastic member is arranged between the limiting block and the bottom plate of the main sliding rail; the connecting block is stacked on the fixed plate, one end of the connecting block is movably connected with the limiting block, and at least a part of the fixed plate protrudes from the main body of the connecting block towards the limiting block; the tail end of the main cantilever, the connecting block and the fixed plate are connected through a pin shaft and are driven to slide in the sliding groove by the main cantilever, and when the limiting block is driven by the connecting block to slide towards the first direction and the first protrusion passes through the clamping notch, the elastic member pushes the limiting block to make the first protrusion embedded into the clamping notch, and when the limiting block is driven by the connecting block to slide away from the first direction, the fixed plate is inserted into the avoiding notch of the limiting block and prevents the first protrusion of the limiting block from being embedded into the clamping notch.

[0010] As a further improvement of the present application, the first protrusion comprises a first inclined surface facing the first direction and a retreat stop surface away from the first direction, and when the first protrusion is embedded into the clamping notch, the retreat stop surface prevents the slider assembly from moving away from the first direction, and the first inclined surface cooperates with the folded edge of the main sliding rail to overcome the elastic force of the elastic member and make the first protrusion disengage from the clamping notch.

[0011] As a further improvement of the present application, the avoiding notch and the lower surface of the limiting block are connected through a second inclined surface, and when the first protrusion is embedded into the clamping notch, the second inclined surface abuts against the bottom plate of the main sliding rail.

[0012] As a further improvement of the present application, one end of the connecting block facing the limiting block is provided with a driving part, the limiting block is provided with a connecting groove, and the connecting block is connected with the limiting block by embedding the driving part into the connecting groove; the distance between the front side wall and the rear side wall of the connecting groove is greater than the size of the driving part in the first direction, and when the connecting block drives the limiting block to slide in the first direction, the driving part abuts against the front side wall of the connecting groove, and the fixed plate has a gap with the front end surface of the limiting block; when the connecting block drives the limiting block to move away from the first direction, the driving part abuts against the rear side wall of the connecting groove, and the fixed plate is embedded into the avoiding notch.

[0013] As a further improvement of the present application, the connecting block comprises an arm portion, and the driving portion is connected to the main body portion of the connecting block through the arm portion; the front end face of the limiting block has an avoiding slot communicated with the connecting slot, and when the driving portion is inserted into the connecting slot, the arm portion of the connecting block is embedded into the avoiding slot.

[0014] As a further improvement of the present application, the driving portion is in the shape of a rod arranged in the second direction, and the connecting slot is composed of a through slot located at the bottom of the avoiding notch.

[0015] As a further improvement of the present application, the limiting block comprises an extension portion located at the opening of the connecting slot, the extension portion is connected to the rear side wall of the connecting slot and extends towards the front side wall, thereby preventing the driving portion of the connecting block from being pulled out of the connecting slot.

[0016] As a further improvement of the present application, the avoiding notch is connected to the front end face of the limiting block through a third inclined surface, and when the main cantilever drives the sliding block assembly to slide in the opposite direction of the first direction, the third inclined surface guides the fixed plate to be embedded into the avoiding notch.

[0017] As a further improvement of the present application, the two width direction side walls of the limiting block respectively have a second protrusion, the second protrusion is located in front of the first protrusion, and when the first protrusion is embedded into the clamping notch, the second protrusion remains embedded in the sliding slot.

[0018] As a further improvement of the present application, the sliding rail assembly comprises a fixed rod, the leading end of the fixed rod has an angle, and the trailing end of the fixed rod is fixed to the main sliding rail.

[0019] The support assembly comprises a first auxiliary cantilever and a second auxiliary cantilever, and the two ends of the first auxiliary cantilever are respectively hinged to the supporting arm and the fixed rod, and the two ends of the second auxiliary cantilever are respectively hinged to the main cantilever and the fixed rod.

[0020] The present application has the following beneficial effects: by arranging multiple clamping notches in the main sliding rail, and by pushing the limiting block through the elastic member to make the first protrusion embedded into the clamping notch to realize the opening angle retention, and by inserting the fixed plate under the avoiding notch to prevent the first protrusion from being embedded into the clamping notch, the window closing and the opening angle adjustment are relatively convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a multi-angle limiting sliding support provided by an embodiment of the present application.

[0022] Figure 2 is a partial structural schematic diagram of a multi-angle limiting sliding support provided by an embodiment of the present application.

[0023] Figure 3 is a cross-sectional structure schematic view of a main sliding rail in a multi-angle limiting sliding support provided by an embodiment of the present application.

[0024] Figure 4 is a schematic view of a limiting block in a multi-angle limiting sliding support provided by an embodiment of the present application.

[0025] Figure 5 is a schematic view of a connecting block in a multi-angle limiting sliding support provided by an embodiment of the present application.

[0026] Figure 6 is a partial cross-sectional structure schematic view of a multi-angle limiting sliding support in a window sash closed state provided by an embodiment of the present application.

[0027] Figure 7 is a partial cross-sectional structure schematic view of a multi-angle limiting sliding support in a window sash opened state provided by an embodiment of the present application.

[0028] Figure 8 is a partial cross-sectional structure schematic view of a multi-angle limiting sliding support in a window sash opened limiting state provided by an embodiment of the present application.

[0029] Reference Signs

[0030] DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0032] As shown in Figure 1 is a structure schematic view of a multi-angle limiting sliding support provided by an embodiment of the present application, which is used to install a window sash to a window frame and realize multi-angle opening and positioning of the window sash. The multi-angle limiting sliding support of the present embodiment comprises a support assembly 10, a sliding rail assembly 20 and a sliding block assembly 30, wherein the sliding block assembly 30 is arranged to the sliding rail assembly 20, and the support assembly 10 is connected to the sliding rail assembly 20 and the sliding block assembly 30 respectively. In use, the support assembly 10 is fixed to the bottom of the window sash, and the sliding rail assembly 20 is fixed to the horizontal profile at the bottom of the window frame. Specifically, the multi-angle limiting sliding support can be fixed to the window sash and the window frame in a similar way as the existing sliding support, which will not be described herein.

[0033] In combination with Figure 2 , Figure 3As shown, in one embodiment of the present invention, the slide rail assembly 20 includes a main slide rail 21, which is made of a high-strength metal material and is strip-shaped. Specifically, the main slide rail 21 includes a base plate 211, two side plates 212, and two flanges 213, wherein the two side plates 212 are respectively connected to the base plate 211 in the width direction (e.g., ...). Figure 3 The two edges (in the direction indicated by arrow X in the diagram) are connected to the tops of the two side plates 212 respectively, and the two edges 213, the two side plates 212 and the bottom plate 211 are connected in a C-shape (i.e., there is a gap between the two edges 213), and a sliding groove 214 is formed between the two edges 213, the two side plates 212 and the bottom plate 211 along the length direction of the main slide rail 21. Multiple locking notches 215 are also provided on the edges 213, each communicating with the sliding groove 214, and the multiple locking notches 215 are distributed along the length direction of the main slide rail 21. Specifically, each edge 213 has multiple locking notches 215, and the locking notches 215 on the two edges 213 are aligned in the width direction of the main slide rail 21.

[0034] In practical implementation, the main slide rail 21 can be an integral structure, that is, the side plate 212 is formed by bending vertically from the outer edge of the base plate 211, and the folded edge 213 is formed by bending vertically from the outer edge of the side plate 212. Similar to existing sliding supports, when the above-mentioned multi-angle limiting sliding supports are assembled to the window sash and window frame, the main slide rail 21 is fixed to the horizontal profile at the bottom of the window frame by screws or the like.

[0035] The support assembly 10 includes a bracket 11 and a main cantilever 12, with the first end of the main cantilever 12 hinged to the bracket 11. Similar to existing sliding supports, when the above-mentioned multi-angle limiting sliding support is assembled to the window sash and window frame, the bracket 11 is fixed to the horizontal profile at the bottom of the window sash by screws or the like.

[0036] The slider assembly 30 includes a limiting block 31, a connecting block 32, a fixing plate 33, and an elastic element 34. The limiting block 31, connecting block 32, and fixing plate 33 can all be made of materials such as metal or hard plastic. Figure 4 , Figure 6As shown, the limiting block 31 comprises a main body portion 311, an avoiding gap 313 and two first protrusions 312, wherein the width of the main body portion 311 is less than or equal to the gap between the two folded edges 213; the two first protrusions 312 respectively protrude from the two widthwise side edges of the main body portion 311, and the distance between the outer side edges of the two first protrusions 312 is less than the distance between the inner sides of the two side plates 212 of the main slide rail 21, and the size and position of the first protrusions 312 correspond to the clamping gap 215 of the main slide rail 21, i.e. the first protrusions 312 can be embedded into the clamping gap 215; the avoiding gap 313 extends from the lower surface of the main body portion 311 to the front end face, i.e. the front end of the main body portion 311 of the limiting block 31 is vacant.

[0037] The limiting block 31 and the fixing plate 33 are respectively embedded into the sliding groove 214 and can slide along the length direction of the sliding groove 214, and the avoiding gap 313 of the limiting block 31 faces the fixing plate 33. It can be understood by those skilled in the art that the embedding of the limiting block 31 into the sliding groove 214 means that the two first protrusions 312 on the two sides of the limiting block 31 are respectively embedded between the two folded edges 213 and the bottom plate 211, and the main body portion 311 of the limiting block 31 is located between the gap between the two folded edges 213; the embedding of the fixing plate 33 into the sliding groove 214 means that the two side edges of the fixing plate 33 are respectively embedded between the two folded edges 213 and the bottom plate 211.

[0038] The elastic member 34 is arranged between the limiting block 31 and the bottom plate 211 of the main slide rail 21, i.e. the elastic member 34 pushes the corresponding part of the limiting block 31 away from the bottom plate 211. The connecting block 32 is stacked on the fixing plate 33, and one end of the connecting block 32 is movably connected with the limiting block 31, and at least a part of the fixing plate 33 protrudes from the main body portion of the connecting block 32 towards the limiting block 31. The movable connection between the connecting block 32 and the limiting block 31 means that, in the length direction of the main slide rail 21, the connecting block 32 can move within a certain range relative to the limiting block 31, i.e. while the connecting block 32 drives the limiting block 31 to move along the length direction of the main slide rail 21, the connecting block 32 can also move along the length direction of the main slide rail 21 independently (the limiting block 31 remains stationary). Specifically, a blind hole can be formed at the bottom of the limiting block 31, the elastic member 34 comprises a spring 341 arranged into the blind hole and a steel ball 342, and the spring 341 pushes the steel ball 342 to protrude from the lower surface of the limiting block 31, thereby applying a force to the limiting block 31 away from the bottom plate 211.

[0039] As shown in FIG. 2, the limiting block 31 is embedded into the sliding groove 214 of the main slide rail 21, and the two first protrusions 312 of the limiting block 31 are respectively embedded into the two clamping gaps 215 of the main slide rail 21. Figure 2As shown, the tail end of the main suspension arm 12, the connecting block 32 and the fixed plate 33 are connected together through the pin shaft 35, and the sliding block assembly 30 is driven by the main suspension arm 12 to slide in the sliding groove 214, and the tail end of the main suspension arm 12 can rotate around the pin shaft 35. Specifically, the tail end of the main suspension arm 12, the connecting block 32 and the fixed plate 33 have through holes respectively, and the pin shaft 35 passes through the through holes of the tail end of the main suspension arm 12, the connecting block 32 and the fixed plate 33 to assemble them together, and the pin shaft 35 can be a rivet or the like, and in order to ensure the stability of the connection, a gasket 36 can also be arranged between the connecting block 32 and the tail end of the main suspension arm 12.

[0040] When the main suspension arm 12 drives the sliding block assembly 30 to slide towards the first direction (i.e. the sash opening direction) and the first protrusion 312 of the limiting block 31 passes through the clamping gap 215, the elastic member 34 pushes the limiting block 31 to make the first protrusion 312 embedded into the clamping gap 215, and when the first protrusion 312 is embedded into the clamping gap 215, the limiting block 31 can only slide towards the first direction, and cannot slide against the first direction (i.e. the sash closing direction), so as to realize the opening angle limiting. When the main suspension arm 12 drives the sliding block assembly 30 to slide against the first direction (the first protrusion 312 is not embedded into the clamping gap 215), the fixed plate 33 is inserted into the avoiding gap 313 of the limiting block 31 and prevents the first protrusion 312 of the limiting block 31 from being embedded into the clamping gap 215, so as to facilitate the window closing operation. In particular, in order to facilitate the pushing of the first protrusion 312 to be embedded into the clamping gap 215, the elastic member 34 can be located between the two first protrusions 312.

[0041] The above multi-angle limiting sliding support realizes the opening angle retention by setting multiple clamping gaps 215 in the main sliding rail 21, and by pushing the limiting block 31 through the elastic member 34 to make the first protrusion 312 embedded into the clamping gap 215, and at the same time, the fixed plate 33 which slides synchronously with the connecting block 32 is inserted into the avoiding gap 313 below the limiting block 31 to prevent the first protrusion 312 from being embedded into the clamping gap 215, so that the window closing and opening angle adjustment are relatively convenient.

[0042] As Figure 4As shown, in one embodiment of the present application, the first protrusion 312 includes a first inclined surface 3122 facing the first direction and a retreat-preventing surface 3121 (for example, the retreat-preventing surface 3121 can be a vertical surface) facing away from the first direction. When the first protrusion 312 is inserted into the clamping gap 215, the retreat-preventing surface 3121 prevents the limiting block 31 from moving away from the first direction, thereby preventing the sliding block assembly 30 and the tail end of the main suspension arm 12 from moving away from the first direction, i.e., the window cannot be closed at this time. Moreover, when the first protrusion 312 is inserted into the clamping gap 215, the first inclined surface 3122 cooperates with the folded edge 213 of the main sliding rail 21, so that the limiting block 31 can overcome the elastic force of the elastic member 34 to make the first protrusion 312 disengage from the clamping gap 215 and re-insert into the sliding groove 214, i.e., the limiting block 31 can still move in the first direction, thereby increasing the opening angle of the window sash. Through the first inclined surface 3122 and the retreat-preventing surface 3121 on the first protrusion 312, the first protrusion 312 can only slide in one direction after being inserted into the clamping gap 215.

[0043] As shown, Figure 8 In order to better prevent retreat, in one embodiment of the present application, a second inclined surface 316 is arranged between the avoiding gap 313 and the lower surface of the limiting block 31, i.e., the avoiding gap 313 and the lower surface of the limiting block 31 are connected by the second inclined surface 316. Thus, when the elastic member 34 pushes the first protrusion 312 upward and inserts it into the clamping gap 215, the limiting block 31 can be twisted (i.e., the front end of the limiting block 31 tilts downward), so that the second inclined surface 316 abuts against the bottom plate 211 of the main sliding rail 21, and the front end of the top surface of the avoiding gap 313 also abuts against the bottom plate 211 of the main sliding rail 21. At this time, the fixed plate 33 cannot be inserted into the avoiding gap 313, so that the limiting block 31 cannot move away from the first direction.

[0044] In order to avoid the limiting block 31 from disengaging from the sliding groove 214 of the main sliding rail 21 when the first protrusion 312 is inserted into the clamping gap 215, in one embodiment of the present application, the two width-direction side walls of the main body portion 311 of the limiting block 31 respectively have a second protrusion 318, which is located on the front side (i.e., the side facing the fixed plate 33) of the first protrusion 312 and remains inserted into the sliding groove 214 when the first protrusion 312 is inserted into the clamping gap 215, i.e., the two second protrusions 318 are respectively located between the folded edge 213 and the bottom plate 211 of the main sliding rail 21. Specifically, in order to facilitate the twisting of the limiting block 31, the second protrusion 318 can be in a cylindrical shape.

[0045] In combination with Figure 4 , Figure 5As shown, in one embodiment of the present application, the connecting block 32 has a driving portion 321 at the end thereof facing the limiting block 31, and the limiting block 31 has a connecting slot 314 corresponding to the driving portion 321, and the connecting block 32 is connected to the limiting block 31 by inserting the driving portion 321 into the connecting slot 314, and the size of the connecting slot 314 in the first direction is greater than the size of the driving portion 321 in the first direction, as shown in Figure 6- Figure 8 Thus, when the connecting block 32 drives the limiting block 31 to slide in the first direction, the driving portion 321 abuts against the front side wall of the connecting slot 314, as shown in Figure 7 As shown, a gap is formed between the front end surface of the limiting block 31 and the fixed plate 33 (at this time, the limiting block 31 cannot be twisted because the first protrusion 312 is kept between the folded edge 213 and the bottom plate 211, and a gap is formed between the avoiding gap 313 and the bottom plate 211); when the connecting block 32 drives the limiting block 31 to move away from the first direction, the driving portion 321 abuts against the rear side wall of the connecting slot 314, as shown in Figure 6 As shown, the fixed plate 33 is inserted into the avoiding gap 313, and the limiting block 31 cannot be twisted, and even if the first protrusion 312 passes through the clamping gap 215, the elastic member 34 cannot drive the limiting block 31 to make the first protrusion 312 inserted into the clamping gap 215.

[0046] In one embodiment of the present application, the connecting block 32 comprises an arm portion 322, and the driving portion 321 is connected to the main portion of the connecting block 32 through the arm portion 322; correspondingly, the front end surface of the limiting block 31 has an avoiding slot 317 connected to the connecting slot 314, and when the driving portion 321 is inserted into the connecting slot 314, the arm portion 322 of the connecting block 32 is inserted into the avoiding slot 317. The above structure facilitates the assembly of the connecting block 32 and the limiting block 31.

[0047] In particular, the driving portion 321 of the connecting block 32 is in the form of a rod arranged along the second direction (the second direction is the width direction of the main slide rail 21), and the arm portion 322 is connected to the middle position of the driving portion 321; correspondingly, the connecting slot 314 is formed by a through slot located at the bottom wall of the avoiding gap 313 (the through slot penetrates the limiting block 31 in the width direction). The above structure can avoid the driving portion 321 from being pulled out of the connecting slot 314 to a certain extent.

[0048] To further avoid the driving portion 321 from being pulled out of the connecting slot 314, the limiting block 31 further comprises an extension portion 315 located at the opening of the connecting slot 314, and the extension portion 315 is connected to the rear side wall of the connecting slot 314 and extends towards the front side wall thereof, so that the opening of the connecting slot 314 is relatively small, and thus the probability of the driving portion 321 of the connecting block 32 being pulled out of the connecting slot 314 is reduced.

[0049] As shown in Figure 4As shown, in one embodiment of the present application, the avoiding gap 313 of the limiting block 31 is connected with the front end face of the limiting block 31 through the third slope 319, and when the main suspension arm 12 drives the sliding block assembly 30 to slide in the reverse direction of the first direction (for example, from sliding in the first direction to sliding in the reverse direction of the first direction), the third slope 319 guides the fixed plate 33 to be embedded into the avoiding gap 313. Through the above structure, the fixed plate 33 is more easily inserted into the avoiding gap 313 (i.e., inserted between the limiting block 31 and the bottom plate 211 of the main slide rail 21).

[0050] In one embodiment of the present application, the slide rail assembly 20 further comprises a fixed rod 22, and the head end of the fixed rod 22 has an included angle 221. The tail end of the fixed rod 22 is fixed to the main slide rail 21, and when the multi-angle limiting sliding support is fixed to the window frame, the fixed rod 22 is also fixed to the transverse profile at the bottom of the window frame through screws or the like. Correspondingly, the support assembly 10 comprises a first secondary suspension arm 13 and a second secondary suspension arm 14, and the two ends of the first secondary suspension arm 13 are respectively hinged to the bracket arm 11 and the fixed rod 22, and the two ends of the second secondary suspension arm 14 are respectively hinged to the main suspension arm 12 and the fixed rod 22.

[0051] After the above multi-angle limiting sliding support is installed to the window frame and the window sash, that is, the main slide rail 21 is fixed to the window frame, the bracket arm 11 is fixed to the window sash, and the sliding block assembly 30 is installed to the main slide rail, when the window sash is in the closed state, the two first protrusions 312 on the limiting block 31 are respectively located between the folded edge 213 and the bottom plate 211, the driving part 321 of the connecting block 32 abuts against the rear side wall of the connecting groove 314, and at least a part of the fixed plate 33 is inserted into the avoiding gap 313 of the limiting block 31, as shown in Figure 6 When the window sash is opened, the main suspension arm 12 drives the connecting block 32 and the fixed plate 33 to move in the first direction, at this time the limiting block 31 remains stationary until the driving part 321 abuts against the front side wall of the connecting groove 314, and then the fixed plate 33 is moved out of the avoiding gap 313, and then the limiting block 31 is driven by the driving part 321 to move in the first direction, as shown in Figure 7 During the process that the main suspension arm 12 drives the sliding block assembly 30 to move in the first direction, if the first protrusion 312 passes through the clamping gap 215, the elastic member 34 pushes the limiting block 31 to make the two first protrusions 312 embedded into the clamping gap 215, at the same time the limiting block 31 is twisted to make the bottom of the avoiding gap abut against the bottom plate 211, as shown in Figure 8 At this time, the whole sliding block assembly 30 and the main suspension arm 12 cannot move in the reverse direction of the first direction, and the opening angle limiting is realized; if the main suspension arm 12 continues to move in the first direction, the folded edge at the clamping gap 215 pushes the first slope 3122 to re-push the first protrusion 312 into between the folded edge 213 and the bottom plate 211, as shown in Figure 7As shown, the slider assembly 30 can continue to move in the first direction. When the window needs to be closed (or the opening angle of the sash needs to be reduced) in the sash opening position (the first protrusion 312 is embedded in the blocking gap 215), the slider assembly 30 needs to be pulled in the first direction by the main suspension arm 12 first, so that the first protrusion 312 enters between the folded edge 213 and the bottom plate 211, as shown. Figure 7 Then the main suspension arm 12 is pushed in the reverse direction of the first direction, so that the driving part 321 of the connecting block 32 abuts against the rear side wall of the connecting groove 314, and at least a part of the fixing plate 33 is inserted into the avoiding gap (the limiting block 31 remains stationary in this process), as shown. Figure 6 Then the driving part 321 pushes the limiting block to move in the direction opposite to the first direction, so as to close the window.

[0052] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-angle limiting sliding support, characterized in that, The application relates to a slide rail assembly, which comprises a main slide rail in the shape of a strip, two side plates connected to the width direction of the main slide rail, two folding edges connected to the top end of the side plates, and a supporting assembly and a slide block assembly. The main slide rail is in the shape of a C, and a sliding groove is formed between the two folding edges, the two side plates and the bottom plate along the length direction of the main slide rail. The folding edges are provided with a plurality of clamping notches which are connected to the sliding groove and are distributed along the length direction of the main slide rail. The supporting assembly comprises a supporting arm and a main suspension arm, and the first end of the main suspension arm is hinged to the supporting arm. The slide block assembly comprises a limiting block, a fixed plate, a connecting block and an elastic element. The limiting block is provided with an avoiding notch and two first protrusions which protrude from the two width direction edges of the limiting block and correspond to the clamping notches. The avoiding notch extends from the lower surface of the limiting block to the front end surface. The limiting block and the fixed plate are slidably embedded into the sliding groove, and the avoiding notch of the limiting block faces the fixed plate. The elastic element is arranged between the limiting block and the bottom plate of the main slide rail. The connecting block is stacked on the fixed plate, one end of the connecting block is movably connected to the limiting block, and at least a part of the fixed plate protrudes from the main body of the connecting block towards the limiting block. The tail end of the main suspension arm, the connecting block and the fixed plate are connected by a pin shaft and are driven to slide in the sliding groove. When the limiting block is driven by the connecting block to slide towards the first direction and the first protrusion passes through the clamping notch, the elastic element pushes the limiting block to make the first protrusion embedded into the clamping notch. When the limiting block is driven by the connecting block to slide back to the first direction, the fixed plate is inserted into the avoiding notch of the limiting block and prevents the first protrusion of the limiting block from being embedded into the clamping notch. The one end of the connecting block towards the limiting block is provided with a driving part, and the limiting block is provided with a connecting groove. The distance between the front side wall and the rear side wall of the connecting groove is greater than the size of the driving part in the first direction. When the connecting block drives the limiting block to slide towards the first direction, the driving part abuts against the front side wall of the connecting groove, and the gap is formed between the fixed plate and the front end surface of the limiting block. When the connecting block drives the limiting block to move back to the first direction, the driving part abuts against the rear side wall of the connecting groove, and the fixed plate is embedded into the avoiding notch. The connecting block comprises an arm part, and the driving part is connected to the main body of the connecting block through the arm part. The front end surface of the limiting block is provided with an avoiding groove which is connected to the connecting groove. When the driving part is inserted into the connecting groove, the arm part of the connecting block is embedded into the avoiding groove.

2. The multi-angle limiting sliding support according to claim 1, characterized in that, The first protrusion comprises a first inclined surface facing the first direction and a retreat-preventing surface opposite to the first direction, and when the first protrusion is embedded into the clamping gap, the retreat-preventing surface prevents the slider assembly from moving opposite to the first direction, and the first inclined surface cooperates with the folded edge of the main slide rail to make the first protrusion disengage from the clamping gap against the elastic force of the elastic member.

3. The multi-angle limiting sliding support according to claim 1, characterized in that, The avoiding gap is connected with the lower surface of the limiting block through a second inclined surface, and when the first protrusion is embedded into the clamping gap, the second inclined surface abuts against the bottom plate of the main slide rail.

4. The multi-angle limiting sliding support according to claim 1, characterized in that, The driving part is in the shape of a rod arranged along the second direction, and the connecting groove is composed of a through groove located at the bottom of the avoiding gap.

5. The multi-angle limiting sliding support according to claim 4, characterized in that, The limiting block comprises an extension located at the opening of the connecting groove, the extension is connected with the rear sidewall of the connecting groove and extends towards the front sidewall, thereby preventing the driving part of the connecting block from disengaging from the connecting groove.

6. The multi-angle limiting sliding support according to claim 1, characterized in that, The avoiding gap is connected with the front end surface of the limiting block through a third inclined surface, and when the main cantilever drives the slider assembly to slide opposite to the first direction, the third inclined surface guides the fixed plate to be embedded into the avoiding gap.

7. The multi-angle limiting sliding support according to claim 1, characterized in that, The two width-direction sidewalls of the limiting block respectively have a second protrusion, the second protrusion is located in front of the first protrusion, and when the first protrusion is embedded into the clamping gap, the second protrusion remains embedded into the sliding groove.

8. The multi-angle limiting sliding support according to claim 1, characterized in that, The slide rail assembly comprises a fixed rod, the leading end of the fixed rod has an angle, and the trailing end of the fixed rod is fixed with the main slide rail. The supporting assembly comprises a first auxiliary cantilever and a second auxiliary cantilever, the two ends of the first auxiliary cantilever are respectively hinged with the supporting arm and the fixed rod, and the two ends of the second auxiliary cantilever are respectively hinged with the main cantilever and the fixed rod. The supporting assembly comprises a first auxiliary cantilever and a second auxiliary cantilever, the two ends of the first auxiliary cantilever are respectively hinged with the supporting arm and the fixed rod, and the two ends of the second auxiliary cantilever are respectively hinged with the main cantilever and the fixed rod.

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