Multi-angle limiting sliding support

Abstract

The invention provides a multi-angle limiting sliding support which comprises a sliding rail assembly, a sliding block assembly and a limiting assembly. The supporting assembly comprises a supporting arm and a main cantilever, and the head end of the main cantilever is hinged to the supporting arm; the sliding block assembly comprises a limiting block, a fixing plate, a connecting block and an elastic piece. The limiting block is provided with a first protruding block and an avoiding notch, the limiting block and the fixing plate are embedded into the sliding groove, the elastic piece is arranged between the limiting block and a bottom plate of the main sliding rail, the connecting block is stacked on the fixing plate, and one end of the connecting block is movably connected with the limiting block. The tail end of the main cantilever, the connecting block and the fixing plate are connected together through a pin shaft, the main cantilever drives the sliding block assembly to slide in the sliding groove, and the fixing plate is inserted into the receding notch of the limiting block to prevent the first protruding block from being embedded into the clamping notch. According to the invention, the window closing and opening angle adjustment is relatively convenient.

Description

Technical Field

[0001] The invention relates to the field of door and window hardware, and more specifically to a multi-angle limiting sliding support. Background Art

[0002] A sliding stay is a device used to support and control the opening and closing of windows. It not only provides support, but also helps adjust the opening angle of the window and maintain stability.

[0003] For example, the Chinese invention patent with application number 200920050715.2 records a sliding support, the outer shell of which is provided with a plurality of positioning bayonet holes, the inner shell can slide along the outer shell, a positioning plate is installed on the inner shell, the tip of the positioning plate is an inclined structure, the positioning plate is driven by an elastic device, the tip can extend out of the positioning bayonet hole and fix the positioning plate relative to the outer shell, or continue to push the inner shell forward to retract the tip into the inner shell. When the hanging window door needs to be closed, the telescopic support needs to push the hanging window door outward to the maximum angle, so that the tip retracts into the sliding plate and presses against the side wall of the sliding plate, so that the positioning plate is in an unlocked state, and then the hanging 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. When the opening angle of the hanging window door needs to be reduced, the hanging window still needs to be closed, and then the installation position of the positioning plate and different positioning bayonet holes is gradually adjusted to adjust the opening angle of the hanging window, which is relatively troublesome to operate. Summary of the invention

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

[0005] The technical solution of the present invention to solve the above technical problem is to provide a multi-angle limited sliding support, including:

[0006] The slide rail assembly comprises a main slide rail in the shape of a strip, wherein the main slide rail comprises a bottom plate, two side plates respectively connected to both sides of the bottom plate in the width direction, and two folding edges respectively connected to the top ends of the side plates, and the two folding edges, the two side plates and the bottom plate are connected to form a C shape, and a sliding groove along the length direction of the main slide rail is formed between the two folding edges, the two side plates and the bottom plate; the folding edges are provided with a plurality of positioning notches respectively connected to the sliding grooves, and the plurality of positioning notches are distributed along the length direction of the main slide rail;

[0007] A support assembly comprises a support arm and a main cantilever, wherein the head end of the main cantilever is hinged to the support arm;

[0008] A slider assembly, comprising a limit block, a fixing plate, a connecting block and an elastic member; the limit block is provided with an avoidance notch and two first protrusions, the two first protrusions respectively protrude from both side edges in the width direction of the limit block and correspond to the positioning notch, and the avoidance notch extends from the lower surface of the limit block to the front end surface;

[0009] The limit block and the fixing plate are respectively slidably embedded in the sliding groove, and the avoidance notch on the limit block faces the fixing plate; the elastic member is installed between the limit block and the bottom plate of the main slide rail; the connecting block is stacked on the fixing plate, and one end of the connecting block is movably connected to the limit block, and at least a part of the fixing plate protrudes from the main body of the connecting block toward the limit block; the tail end of the main cantilever, the connecting block and the fixing plate are connected together by a pin shaft, and are driven by the main cantilever to slide in the sliding groove, and when the limit block is driven by the connecting block to slide in the first direction and the first protrusion passes through the positioning notch, the elastic member pushes the limit block to make the first protrusion embedded in the positioning notch, and when the limit block is driven by the connecting block to slide back to the first direction, the fixing plate is inserted into the avoidance notch of the limit block and prevents the first protrusion of the limit block from being embedded in the positioning notch.

[0010] As a further improvement of the present invention, the first protrusion includes a first inclined surface facing the first direction and a stop surface facing away from the first direction, and when the first protrusion is embedded in the locking notch, the 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 slide rail to overcome the elastic force of the elastic member so that the first protrusion is disengaged from the locking notch.

[0011] As a further improvement of the present invention, the avoidance notch is connected to the lower surface of the limiting block via a second inclined surface, and when the first protrusion is embedded in the positioning notch, the second inclined surface abuts against the bottom plate of the main slide rail.

[0012] As a further improvement of the present invention, the connecting block has a driving part on one end facing the limit block, and the limit block has a connecting groove, and the connecting block is connected to the limit block in such a way that the driving part is embedded in the connecting groove; the spacing 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 limit block to slide in the first direction, the driving part abuts against the front side wall of the connecting groove, and a gap is formed between the fixed plate and the front end surface of the limit block; when the connecting block drives the limit 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 in the avoidance gap.

[0013] As a further improvement of the present invention, the connecting block includes an arm portion, and the driving portion is connected to the main body of the connecting block through the arm portion; the front end face of the limit block has an avoidance groove connected to the connecting groove, and when the driving portion is inserted into the connecting groove, the arm portion of the connecting block is embedded in the avoidance groove.

[0014] As a further improvement of the present invention, the driving portion is in the shape of a rod arranged along the second direction, and the connecting groove is formed by a through groove located on the bottom wall of the avoidance notch.

[0015] As a further improvement of the present invention, the limit block includes an extension portion located at the opening of the connecting groove, the extension portion is connected to the rear side wall of the connecting groove and extends toward the front side wall, thereby preventing the driving portion of the connecting block from escaping from the connecting groove.

[0016] As a further improvement of the present invention, the avoidance gap is connected to the front end surface of the limit block through a third inclined surface, and when the main cantilever drives the slider assembly to slide back to the first direction, the third inclined surface guides the fixed plate to embed into the avoidance gap.

[0017] As a further improvement of the present invention, the side walls of the two width directions of the limit block respectively have second protrusions, the second protrusions are located in front of the first protrusions, and when the first protrusions are embedded in the positioning notch, the second protrusions remain embedded in the sliding grooves.

[0018] As a further improvement of the present invention, the slide rail assembly includes a fixing rod, the head end of the fixing rod has a wrap angle, and the tail end of the fixing rod is fixed to the main slide rail;

[0019] The supporting assembly includes a first auxiliary cantilever and a second auxiliary cantilever, and both ends of the first auxiliary cantilever are respectively hinged to the supporting arm and the fixing rod, and both ends of the second auxiliary cantilever are respectively hinged to the main cantilever and the fixing rod.

[0020] The present invention has the following beneficial effects: a plurality of locking notches are arranged on the main slide rail, and the limiting block is pushed by an elastic member so that the first protrusion is embedded in the locking notch to maintain the opening angle; at the same time, a fixed plate that slides synchronously with the connecting block is inserted into the avoidance notch below the limiting block to prevent the first protrusion from being embedded in the locking notch, so that the closing and opening angle adjustment of the window is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the main slide rail in the multi-angle limiting slide support provided by an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of a limiting block in a multi-angle limiting sliding support provided in an embodiment of the present invention.

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

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

[0027] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the multi-angle limiting sliding support provided by an embodiment of the present invention when the window sash is in an open state.

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

[0029] Reference Numbers

[0030] 10 Support assembly 11 Bracket

[0031] 12 Main cantilever 13 First auxiliary cantilever

[0032] 14 Second auxiliary cantilever 20 Slide rail assembly

[0033] 21 Main rail 211 Bottom plate

[0034] 212 side panel 213 folding edge

[0035] 214 Sliding slot 215 Card slot notch

[0036] 22 Fixed rod 221 Wrap angle

[0037] 30 Slider assembly 31 Limit block

[0038] 311 main body 312 first protrusion

[0039] 3121 stop surface 3122 first inclined surface

[0040] 313 Avoidance gap 314 Connection groove

[0041] 315 extension portion 316 second inclined surface

[0042] 317 avoidance groove 318 second protrusion

[0043] 319 third inclined surface 32 connecting block

[0044] 321 driving part 322 arm part

[0045] 33 fixing plate 34 elastic member

[0046] 341 Spring 342 Steel Ball

[0047] 35 Pin 36 Washer DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] like Figure 1 The figure is a schematic diagram of the structure of a multi-angle limit sliding support provided by an embodiment of the present invention, and the multi-angle limit sliding support is used to install the window sash to the window frame and realize the multi-angle opening and positioning of the window sash. The multi-angle limit sliding support of this embodiment includes a support assembly 10, a slide rail assembly 20 and a slider assembly 30, wherein the slider assembly 30 is installed to the slide rail assembly 20, and the support assembly 10 is connected to the slide rail assembly 20 and the slider assembly 30 respectively. When in use, the support assembly 10 is fixed to the bottom of the window sash, and the slide rail assembly 20 is fixed to the horizontal profile at the bottom of the window frame. Specifically, the multi-angle limit sliding support can be fixed to the window sash and the window frame in a manner similar to the existing sliding support, which will not be repeated here.

[0050] Combination Figure 2 , Figure 3 As shown, in one embodiment of the present invention, the above-mentioned slide rail assembly 20 includes a main slide rail 21, which is made of a metal material with high strength and is in a strip shape. The main slide rail 21 specifically includes a bottom plate 211, two side plates 212 and two folding edges 213, wherein the two side plates 212 are respectively connected to the bottom plate 211 in the width direction (such as Figure 3 The two side edges of the main slide rail 21 (in the direction indicated by the arrow X in the figure), the two folded edges 213 are respectively connected to the top ends of the two side panels 212, and the two folded edges 213, the two side panels 212 and the bottom panel 211 are connected to form a C shape (that is, there is a gap between the two folded edges 213), and a sliding groove 214 along the length direction of the main slide rail 21 is formed between the two folded edges 213, the two side panels 212 and the bottom panel 211. The folded edges 213 are also provided with a plurality of positioning notches 215 respectively connected to the sliding grooves 214, and the plurality of positioning notches 215 are distributed along the length direction of the main slide rail 21. In particular, each folded edge 213 has a plurality of positioning notches 215, and the positioning notches 215 on the two folded edges 213 are aligned in the width direction of the main slide rail 21.

[0051] In a specific implementation, the main rail 21 may be an integrated structure, that is, the side plate 212 is formed by vertically bending the outer edge of the bottom plate 211, and the folded edge 213 is formed by vertically bending the outer edge of the side plate 212. Similar to the existing sliding support, when the multi-angle limit sliding support is assembled to the window sash and the window frame, the main rail 21 is fixed to the horizontal profile at the bottom of the window frame by screws or the like.

[0052] The support assembly 10 includes a bracket 11 and a main cantilever 12, and the head end of the main cantilever 12 is hinged on the bracket 11. Similar to the existing sliding support, when the multi-angle limit sliding support is assembled to the window sash and the window frame, the bracket 11 is fixed to the horizontal profile at the bottom of the window sash by screws or the like.

[0053] The slider assembly 30 includes a limit block 31, a connection block 32, a fixing plate 33 and an elastic member 34. The limit block 31, the connection block 32 and the fixing plate 33 can be made of metal, hard plastic and other materials. Figure 4 , Figure 6 As shown, the limit block 31 includes a main body part 311, an avoidance gap 313 and two first protrusions 312, wherein the width of the main body part 311 is less than or equal to the gap between the two folded edges 213; the two first protrusions 312 protrude from the two side edges of the width direction of the main body part 311 respectively, and the spacing between the outer edges of the two first protrusions 312 is less than the spacing between the inner sides of the two side plates 212 on the main slide rail 21, and the size and position of the first protrusion 312 correspond to the positioning gap 215 on the main slide rail 21, that is, the first protrusion 312 can be embedded in the positioning gap 215; the avoidance gap 313 extends from the lower surface of the main body part 311 of the limit block 31 to the front end surface, that is, the front end of the main body part 311 of the limit block 31 is vacant.

[0054] The above-mentioned limit block 31 and fixed plate 33 are respectively embedded in the sliding groove 214, and can slide along the length direction of the sliding groove 214, and the avoidance notch 313 on the limit block 31 faces the fixed plate 33. Those skilled in the art can understand that the limit block 31 is embedded in the sliding groove 214, which means that the first protrusions 312 on both sides of the limit block 31 are respectively embedded between the two folded edges 213 and the bottom plate 211, and the main body 311 of the limit block 31 is located between the gaps of the two folded edges 213; the fixed plate 33 is embedded in the sliding groove 214, which means that the two side edges of the fixed plate 33 are respectively embedded between the two folded edges 213 and the bottom plate 211.

[0055] The elastic member 34 is installed between the limit block 31 and the bottom plate 211 of the main slide rail 21, that is, the elastic member 34 pushes the corresponding part of the limit block 31 away from the bottom plate 211. The connecting block 32 is stacked on the fixed plate 33, and one end of the connecting block 32 is movably connected to the limit block 31, and at least a part of the fixed plate 33 protrudes from the main body of the connecting block 32 toward the limit block 31. The movably connected connecting block 32 and the limit 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 limit block 31, that is, while the connecting block 32 drives the limit block 31 to move along the length direction of the main slide rail 21, it can also move alone along the length direction of the main slide rail 21 (the limit block 31 remains stationary). Specifically, a blind hole can be opened at the bottom of the limit block 31, and the elastic member 34 includes a spring 341 and a steel ball 342 installed in the blind hole. The spring 341 pushes the steel ball 342 to protrude to the lower surface of the limit block 31, thereby applying a force to the limit block 31 away from the bottom plate 211.

[0056] like Figure 2 As shown, the tail end of the main cantilever 12, the connecting block 32 and the fixing plate 33 are connected together by a pin 35, and the main cantilever 12 drives the slider assembly 30 to slide in the sliding groove 214, and the tail end of the main cantilever 12 can rotate around the pin 35. Specifically, the tail end of the main cantilever 12, the connecting block 32 and the fixing plate 33 have through holes respectively, and the pin 35 passes through the through holes of the tail end of the main cantilever 12, the connecting block 32 and the fixing plate 33 to assemble them together. The pin 35 can be a rivet or a similar component, and in order to ensure the stability of the connection, a washer 36 can be further provided between the connecting block 32 and the tail end of the main cantilever 12.

[0057] When the main cantilever 12 drives the slider assembly 30 to slide in the first direction (i.e., the window sash opening direction) and the first protrusion 312 of the limit block 31 passes through the positioning notch 215, the elastic member 34 pushes the limit block 31 to make the first protrusion 312 embedded in the positioning notch 215, and when the first protrusion 312 is embedded in the positioning notch 215, the limit block 31 can only slide in the first direction, but cannot slide in the opposite direction (i.e., the window sash closing direction), thereby achieving the window opening angle limit. When the main cantilever 12 drives the slider assembly 30 to slide in the opposite direction (the first protrusion 312 is not embedded in the positioning notch 215), the fixing plate 33 is inserted into the avoidance notch 313 of the limit block 31 and prevents the first protrusion 312 of the limit block 31 from being embedded in the positioning notch 215, thereby facilitating the window closing operation. In particular, in order to facilitate the first protrusion 312 to be embedded in the positioning notch 215, the elastic member 34 can be located between the two first protrusions 312.

[0058] The above-mentioned multi-angle limit sliding support is configured by setting a plurality of locking notches 215 on the main sliding rail 21, and pushing the limit block 31 through the elastic member 34 so that the first protrusion 312 is embedded in the locking notch 215 to maintain the opening angle. At the same time, the fixed plate 33 that slides synchronously with the connecting block 32 is inserted into the avoidance notch 313 under the limit block 31 to prevent the first protrusion 312 from being embedded in the locking notch 215, so that the closing and opening angle adjustment of the window is relatively convenient.

[0059] like Figure 4 As shown, in one embodiment of the present invention, the first protrusion 312 includes a first inclined surface 3122 facing the first direction and a stop surface 3121 facing away from the first direction (for example, the stop surface 3121 can be a vertical surface). When the first protrusion 312 is embedded in the positioning notch 215, the stop surface 3121 prevents the limit block 31 from moving away from the first direction, thereby preventing the slider assembly 30 and the tail end of the main cantilever 12 from moving away from the first direction, that is, the window cannot be closed at this time. Moreover, when the first protrusion 312 is embedded in the positioning notch 215, the first inclined surface 3122 cooperates with the folding edge 213 of the main slide rail 21, so that the limit block 31 can overcome the elastic force of the elastic member 34 to make the first protrusion 312 disengage from the positioning notch 215 and re-embed into the sliding groove 214, that is, the limit 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 stop surface 3121 on the first protrusion 312 , the first protrusion 312 can slide in only one direction after being inserted into the locking notch 215 .

[0060] like Figure 8 As shown, in one embodiment of the present invention, in order to better stop the retreat, a second inclined surface 316 is set between the above-mentioned avoidance gap 313 and the lower surface of the limit block 31, that is, the avoidance gap 313 and the lower surface of the limit block 31 are connected through the second inclined surface 316. In this way, when the elastic member 34 pushes the first protrusion 312 upward and embeds into the positioning gap 215, the limit block 31 can be twisted (that is, the front end of the limit block 31 tilts downward), so that the second inclined surface 316 abuts against the bottom plate 211 of the main slide rail 21, and the front end of the top surface of the avoidance gap 313 also abuts against the bottom plate 211 of the main slide rail 21 at the same time. At this time, the fixed plate 33 cannot be inserted into the avoidance gap 313, so that the limit block 31 cannot move back to the first direction.

[0061] In order to prevent the stop block 31 from falling out of the sliding groove 214 of the main slide rail 21 when the first protrusion 312 is embedded in the positioning notch 215, in one embodiment of the present invention, the two width-direction side walls of the main body 311 of the stop block 31 respectively have second protrusions 318, the second protrusions 318 are located at the front side of the first protrusion 312 (i.e., the side facing the fixing plate 33), and when the first protrusion 312 is embedded in the positioning notch 215, the second protrusions 318 remain embedded in the sliding groove 214, that is, the two second protrusions 318 are respectively located between the folded edge 213 of the main slide rail 21 and the bottom plate 211. Specifically, in order to facilitate the torsion of the stop block 31, the second protrusions 318 can be cylindrical.

[0062] Combination Figure 4 , Figure 5 As shown, in one embodiment of the present invention, the connecting block 32 has a driving portion 321 on one end facing the limiting block 31, and correspondingly, the limiting block 31 has a connecting groove 314, and the connecting block 32 is connected to the limiting block 31 in a manner that the driving portion 321 is embedded in the connecting groove 314, and the size of the connecting groove 314 in the first direction is larger than the size of the driving portion 321 in the first direction, as shown in FIG. Figure 6-Figure 8 Thus, when the connection block 32 drives the limit block 31 to slide in the first direction, the driving portion 321 abuts against the front side wall of the connection groove 314, as shown in FIG. Figure 7 As shown, there is a gap between the fixing plate 33 and the front end surface of the limiting block 31 (at this time, because the first protrusion 312 is maintained between the folded edge 213 and the bottom plate 211, the limiting block 31 will not twist, and there is a gap between the avoidance notch 313 and the bottom plate 211); when the connecting block 32 drives the limiting block 31 to move back to the first direction, the driving portion 321 abuts against the rear side wall of the connecting groove 314, as shown in FIG. Figure 6 As shown, the fixing plate 33 is embedded in the avoidance notch 313 , the limiting block 31 cannot be twisted, and even if the first protrusion 312 passes through the locking notch 215 , the elastic member 34 cannot push the limiting block 31 to make the first protrusion 312 embedded in the locking notch 215 .

[0063] In one embodiment of the present invention, the connection block 32 includes an arm portion 322, and the driving portion 321 is connected to the main body of the connection block 32 through the arm portion 322; accordingly, the front end surface of the limit block 31 has an avoidance groove 317 connected to the connection groove 314, and when the driving portion 321 is inserted into the connection groove 314, the arm portion 322 of the connection block 32 is embedded in the avoidance groove 317. The above structure facilitates the assembly of the connection block 32 and the limit block 31 together.

[0064] In particular, the driving portion 321 on the connecting block 32 is in the shape 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; accordingly, the connecting groove 314 is composed of a through groove located at the bottom wall of the avoidance notch 313 (the through groove runs through the width direction of the limit block 31). The above structure can prevent the driving portion 321 from falling out of the connecting groove 314 to a certain extent.

[0065] To further prevent the driving portion 321 from escaping from the connecting groove 314, the limiting block 31 also includes an extension portion 315 located at the opening of the connecting groove 314, and the extension portion 315 is connected to the rear side wall of the connecting groove 314 and extends toward its front side wall, so that the opening of the connecting groove 314 is relatively small, thereby reducing the probability of the driving portion 321 of the connecting block 32 escaping from the connecting groove 314.

[0066] like Figure 4 As shown, in one embodiment of the present invention, the avoidance notch 313 of the limit block 31 is connected to the front end surface of the limit block 31 through the third inclined surface 319, and when the main cantilever 12 drives the slider assembly 30 to slide in the opposite direction to the first direction (for example, from sliding in the first direction to sliding in the opposite direction to the first direction), the third inclined surface 319 guides the fixing plate 33 to be embedded in the avoidance notch 313. With the above structure, the fixing plate 33 is more easily inserted into the avoidance notch 313 (that is, inserted between the limit block 31 and the bottom plate 211 of the main slide rail 21).

[0067] In one embodiment of the present invention, the slide rail assembly 20 further includes a fixing rod 22, and the head end of the fixing rod 22 has a wrap angle 221. The tail end of the fixing rod 22 is fixed to the main slide rail 21, and when the multi-angle limit sliding support is fixed to the window frame, the fixing rod 22 is also fixed to the horizontal profile at the bottom of the window frame by screws or the like. Accordingly, the support assembly 10 includes a first auxiliary cantilever 13 and a second auxiliary cantilever 14, and the two ends of the first auxiliary cantilever 13 are respectively hinged to the bracket arm 11 and the fixing rod 22, and the two ends of the second auxiliary cantilever 14 are respectively hinged to the main cantilever 12 and the fixing rod 22.

[0068] After the multi-angle limit sliding support is installed on the window frame and the window sash, that is, the main slide rail 21 is fixed to the window frame, the bracket 11 is fixed to the window sash, and the slider assembly 30 is installed on the main slide rail, when the window sash is in a closed state, the two first protrusions 312 on the limit block 31 are respectively located between the folded edge 213 and the bottom plate 211, the driving portion 321 of the connecting block 32 abuts against the rear side wall of the connecting groove 314, and at least a portion of the fixing plate 33 is inserted into the avoidance notch 313 of the limit block 31, as shown in FIG. Figure 6As shown; when the window sash is opened, the main cantilever 12 drives the connecting block 32 and the fixing plate 33 to move in the first direction, and the limit block 31 remains stationary until the driving portion 321 abuts against the front side wall of the connecting groove 314, and the fixing plate 33 moves out of the avoidance gap 313, and then the driving portion 321 drives the limit block 31 to move in the first direction, as shown Figure 7 As shown; in the process where the main cantilever 12 drives the slider assembly 30 to move toward the first direction, if the first protrusion 312 passes through the positioning notch 215, the elastic member 34 pushes the limit block 31 to make the two first protrusions 312 embed into the positioning notch 215, and at the same time the limit block 31 is twisted so that the bottom of the avoidance notch abuts against the bottom plate 211, as shown Figure 8 As shown, at this time, the entire slider assembly 30 and the main cantilever 12 cannot move back to the first direction, realizing the opening angle limit; if the main cantilever 12 continues to move in the first direction, the folded edge at the positioning notch 215 pushes the first inclined surface 3122 to push the first protrusion 312 back between the folded edge 213 and the bottom plate 211, as shown in FIG. Figure 7 As shown, the slider assembly 30 can continue to move in the first direction. When the window needs to be closed (or the window opening angle needs to be reduced) in the window sash open positioning state (the first protrusion 312 is embedded in the positioning notch 215), the slider assembly 30 needs to be pulled in the first direction by the main cantilever 12 so that the first protrusion 312 enters between the folding edge 213 and the bottom plate 211. Figure 7 As shown, the main cantilever 12 is then pushed in the opposite direction of the first direction, so that the driving portion 321 of the connecting block 32 abuts against the rear side wall of the connecting groove 314, and at least a portion of the fixing plate 33 is inserted into the avoidance gap (the limit block 31 remains stationary during this process), as shown in FIG. Figure 6 As shown, the driving unit 321 then pushes the limit block to move back to the first direction to close the window.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multi-angle limited sliding support, characterized in that: include: The slide rail assembly comprises a main slide rail in the shape of a strip, wherein the main slide rail comprises a bottom plate, two side plates respectively connected to both sides of the bottom plate in the width direction, and two folding edges respectively connected to the top ends of the side plates, and the two folding edges, the two side plates and the bottom plate are connected to form a C shape, and a sliding groove along the length direction of the main slide rail is formed between the two folding edges, the two side plates and the bottom plate; the folding edges are provided with a plurality of positioning notches respectively connected to the sliding grooves, and the plurality of positioning notches are distributed along the length direction of the main slide rail; A support assembly comprises a support arm and a main cantilever, wherein the head end of the main cantilever is hinged to the support arm; A slider assembly, comprising a limit block, a fixing plate, a connecting block and an elastic member; the limit block is provided with an avoidance notch and two first protrusions, the two first protrusions respectively protrude from both side edges in the width direction of the limit block and correspond to the positioning notch, and the avoidance notch extends from the lower surface of the limit block to the front end surface; The limit block and the fixed plate are respectively slidably embedded in the sliding groove, and the avoidance notch on the limit block faces the fixed plate; The elastic member is installed between the limit block and the bottom plate of the main slide rail; the connecting block is stacked on the fixed plate, and one end of the connecting block is movably connected to the limit block, and at least a part of the fixed plate protrudes from the main body of the connecting block toward the limit block; the tail end of the main cantilever, the connecting block and the fixed plate are connected together by a pin shaft, and are driven by the main cantilever to slide in the sliding groove, and when the limit block is driven by the connecting block to slide in the first direction and the first protrusion passes through the positioning notch, the elastic member pushes the limit block to make the first protrusion embedded in the positioning notch, and when the limit block is driven by the connecting block to slide in the opposite direction to the first direction, the fixed plate is inserted into the avoidance notch of the limit block and prevents the first protrusion of the limit block from being embedded in the positioning notch.

2. The multi-angle limit sliding support according to claim 1, characterized in that: The first protrusion includes a first inclined surface facing the first direction and a stop surface facing away from the first direction, and when the first protrusion is embedded in the locking notch, the 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 slide rail to overcome the elastic force of the elastic member to make the first protrusion disengage from the locking notch.

3. The multi-angle limit sliding support according to claim 1, characterized in that: The avoidance notch is connected to the lower surface of the limiting block via a second inclined surface, and when the first protrusion is embedded in the positioning notch, the second inclined surface abuts against the bottom plate of the main slide rail.

4. The multi-angle limit sliding support according to claim 1, characterized in that: The connecting block has a driving part on one end facing the limit block, and the limit block has a connecting groove, and the connecting block is connected to the limit block in such a way that the driving part is embedded in the connecting groove; the spacing 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 limit block to slide in the first direction, the driving part abuts against the front side wall of the connecting groove, and a gap is formed between the fixing plate and the front end surface of the limit block; when the connecting block drives the limit block to move in the opposite direction to the first direction, the driving part abuts against the rear side wall of the connecting groove, and the fixing plate is embedded in the avoidance gap.

5. The multi-angle limiting sliding support according to claim 4, characterized in that: The connecting block includes an arm portion, and the driving portion is connected to the main body of the connecting block through the arm portion; the front end surface of the limit block has an avoidance groove connected to the connecting groove, and when the driving portion is inserted into the connecting groove, the arm portion of the connecting block is embedded in the avoidance groove.

6. The multi-angle limiting sliding support according to claim 5, characterized in that: The driving part is in the shape of a rod arranged along the second direction, and the connecting groove is formed by a through groove located on the bottom wall of the avoidance notch.

7. The multi-angle limiting sliding support according to claim 6, characterized in that: The limiting block includes an extension portion located at the opening of the connecting groove, the extension portion is connected to the rear side wall of the connecting groove and extends toward the front side wall, thereby preventing the driving portion of the connecting block from escaping from the connecting groove.

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

9. The multi-angle limiting sliding support according to claim 1, characterized in that: The side walls of the two width directions of the limit block respectively have second protrusions, the second protrusions are located in front of the first protrusions, and when the first protrusions are embedded in the positioning notches, the second protrusions remain embedded in the sliding grooves.

10. The multi-angle limit sliding support according to claim 1, characterized in that: The slide rail assembly comprises a fixing rod, the head end of the fixing rod has a wrap angle, and the tail end of the fixing rod is fixed to the main slide rail; The supporting assembly includes a first auxiliary cantilever and a second auxiliary cantilever, and both ends of the first auxiliary cantilever are respectively hinged to the supporting arm and the fixing rod, and both ends of the second auxiliary cantilever are respectively hinged to the main cantilever and the fixing rod.

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