Single-chain window opener

Abstract

The utility model discloses a single-chain window opener which comprises a window opener body, a chain assembly and a window sash connecting plate, the window opener body is installed on a lower frame of a window frame, and the window sash connecting plate is installed on a lower frame of a window sash. The first end of the chain assembly is arranged in the window opener body, and the second end of the chain assembly is fixedly connected with the window sash connecting plate. A chain cavity is formed in the window opener body, the chain assembly comprises a chain, and the chain is arranged in the chain cavity; a chain outlet is formed in the window opener body, the first end of the chain extends out of the window opener body through the chain outlet and is connected with the window sash connecting plate, and the second end of the chain is fixed in the window opener body; the length of the portion, extending out of the window opener body, of the chain is adjusted by controlling the chain to move in the chain cavity, then the window sash connecting plate is pushed through the chain to move so as to drive a window sash to move, and window opening and closing of a window are achieved. The window has the characteristics of simple structure, convenience in window opening and closing, convenience in maintenance and the like.

Description

Technical Field

[0001] The utility model is applied to a window opener, in particular to a single-chain window opener. Background Art

[0002] Most of the window openers currently on the market have complex internal structures. Once the window opener is damaged, it is necessary to replace the window opener intelligently, which increases the user's cost. As the chain window opener to control the opening and closing of windows has gradually become a popular trend, more and more people are using chain window openers. However, the internal structure of the existing chain window openers is relatively complex. Once damaged, it is difficult to repair and can only be replaced with a new window opener, which increases the user's cost. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a single-chain window opener, which can solve the problems of the existing window opener having a complex internal structure and being inconvenient to maintain.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A single-chain window opener, comprising: a window opener body, a chain assembly and a window sash connecting plate, wherein the window opener body is mounted on the lower frame of a window frame, and the window sash connecting plate is mounted on the lower frame of a window sash; a first end of the chain assembly is arranged inside the window opener body, and a second end is fixedly connected to the window sash connecting plate;

[0006] A chain cavity is provided in the window opener body, and the chain assembly includes a chain, and the chain is provided in the chain cavity; a chain outlet is provided on the window opener body, a first end of the chain extends to the outside of the window opener body through the chain outlet and is connected to the window sash connecting plate, and a second end is fixed to the inside of the window opener body; the chain is controlled to move in the chain cavity to adjust the length of the chain extending to the outside of the window opener body, and then the window sash connecting plate is pushed to move by the chain to drive the movement of the window sash, thereby realizing the opening and closing of the window.

[0007] Further, the window opener body includes a base and a shell, and the base is fixedly connected to the shell to form the chain cavity; a chain groove is provided in the base, and the chain groove includes a U-shaped groove and an outlet groove, and the first outlet of the U-shaped groove faces the outlet groove and is spaced from the outlet groove; the second outlet of the U-shaped groove is communicated with the first outlet of the outlet groove, and the second outlet of the outlet groove is communicated with the chain outlet;

[0008] The chain is located in the chain groove, and the first end of the chain is fixed to the first outlet of the U-shaped groove, the second end passes through the second outlet of the outlet groove, and the chain outlet extends outside the window opener body and is fixedly connected to the window sash connecting plate;

[0009] By controlling the chain to move in the chain groove, the length of the chain located outside the window opener body is controlled and adjusted to control the movement of the window sash connecting plate, thereby pushing the window sash to move away from the window frame or towards the window frame.

[0010] Furthermore, the window opener body further comprises a bevel gear, a worm and a guide rail; wherein the guide rail is arranged in the base, and the guide rail is located in the middle of the U-shaped groove; a guide block is also arranged on the guide rail, and the guide block is clamped above the chain, and when the chain moves in the chain groove, the guide block slides left and right along the guide rail;

[0011] The bevel gear is arranged at the interface between the outlet groove and the U-shaped groove, and the sprocket at the bottom of the bevel gear is connected to the chain gear; the worm is arranged above the chain and connected to the top gear of the bevel gear; the bevel gear is driven to rotate by the worm, and then the chain is driven to move in the chain groove by the bevel gear, and at the same time, the guide block slides on the guide rail under the action of the chain.

[0012] Furthermore, the window opener body further comprises a handle assembly; a handle mounting hole is provided on the housing, one end of the handle assembly is threadedly connected to the worm through the handle mounting hole, and the worm is driven to rotate by rotating the handle assembly, and then the chain is driven to move in the chain groove through the bevel gear;

[0013] The worm comprises a smooth portion, a bevel gear connection portion and a handle connection portion which are sequentially arranged from the bottom to the top; wherein a first worm support frame and a second worm support frame are arranged in the base, and the first worm support frame and the second worm support frame are both arranged between the first outlet and the outlet groove of the U-shaped groove, located below the worm, and used to support the worm; a worm groove is arranged on the first worm support frame, and the smooth portion is arranged in the worm groove, so that the worm is located above the chain;

[0014] The bevel gear connecting portion is connected to the bevel gear, and the handle connecting portion is threadedly connected to the handle assembly; the worm is driven to rotate by rotating the handle assembly, and then the bevel gear is driven to rotate by the worm to drive the chain to move in the chain groove, and at the same time, the guide block is driven to slide on the guide rail by the chain.

[0015] Furthermore, the window opener body further comprises a limit lock, a first spring and a pressure plate; wherein the pressure plate is fixed to the top of the bevel gear, and the limit lock is arranged above the pressure plate, and the limit lock is supported by the pressure plate;

[0016] The limit lock has a pawl at one end and a keyhole at the other end; the worm further includes a lock gear connecting portion, which is arranged between the bevel gear connecting portion and the handle connecting portion;

[0017] A lock hole is provided on the outer shell of the window opener body, a lock core is installed in the lock hole, a limiting protrusion is provided at the bottom of the lock core, and the limiting protrusion is located in the keyhole of the limiting lock; the side surface of the lock core is also connected to the limiting lock through a first spring; the lock core in the lock hole is rotated by a preset angle by a key to compress the first spring, and then the limiting lock is driven to move toward the worm under the action of the first spring and the pawl of the limiting lock is contacted with the lock gear connecting part of the worm to lock the worm; the lock core in the lock hole is reset by the key to pull the first spring and drive the limiting lock to move in a direction away from the worm under the action of the first spring and the pawl of the limiting lock is separated from the lock gear connecting part of the worm to release the worm.

[0018] Further, the handle assembly includes a handle head, a knurled shaft, a fixed sleeve, a handle, a connector, an elastic cotter pin and a set screw; wherein the handle includes a first fixed plate, a second fixed plate and a fixed shaft, and the fixed shaft is arranged at one end of the first fixed plate and one end of the second fixed plate, so that the first fixed plate and the second fixed plate are arranged in parallel and symmetrically;

[0019] The fixed sleeve is sleeved on the outside of the fixed shaft; one end of the knurled shaft is inserted into the inside of the fixed sleeve, and the other end is inserted into the inside of the handle head; the knurled shaft rotates in the fixed sleeve to drive the handle head to rotate 360 ​​degrees;

[0020] The other end of the first fixing plate, the other end of the second fixing plate, and one end of the connecting head are all provided with mounting holes, and the elastic cotter pin is sequentially inserted into the mounting hole of the first fixing plate, the mounting hole of the connecting head, and the mounting hole of the second fixing plate, so as to arrange the connecting head between the first fixing plate and the second fixing plate;

[0021] A mounting channel with an internal thread is provided in the middle of the connecting head, and the handle connecting part of the worm is installed in the mounting channel and is threadedly connected to the connecting head, so that the worm is driven to rotate by rotating the handle assembly; a set screw is also installed in the middle of the other end of the connecting head, and the handle connecting part of the worm is fixed by the set screw.

[0022] Furthermore, a guide wheel and a guide block boss are also provided at the bottom of the guide block; wherein, the guide wheel and the guide block boss both slide in the guide rail, and the guide wheel is arranged between the guide block boss and the chain; when the chain slides in the chain groove, it drives the guide wheel and the guide block boss to slide in the guide rail.

[0023] Furthermore, the window opener body also includes a safety lock block; the base is also provided with a lock block mounting hole, and the safety lock block is installed in the lock block mounting hole of the base; the safety lock block includes a lock block bottom plate, the lock block bottom plate is provided with a slide groove and a limit head, and the limit head slides in the slide groove; by sliding the limit head of the safety lock block into the lock block mounting hole, the guide block boss on the guide rail is limited, and the maximum length of the chain extending to the outside of the window opener body is limited to a first length; by sliding the limit head of the safety lock block to the outside of the lock block mounting hole, the limit on the guide block boss on the guide rail is released, and the maximum length of the chain extending to the outside of the window opener body is a second length; wherein, the second length is greater than the first length, and the second length is less than the length of the chain.

[0024] Furthermore, the window opener body also includes a guide column and a second spring; wherein, the guide column and the second spring are installed at one end of the base where a chain outlet is provided; one end of the guide column is fixedly connected to the side of the base facing the outlet groove through the second spring, and the other end faces the chain outlet and extends out of the chain outlet, so as to guide the chain received by the chain outlet.

[0025] Furthermore, the chain assembly further comprises a chain connecting plate; one end of the chain connecting plate is fixedly connected to one end of the chain, and a rivet is provided at the bottom of the other end, a circular groove is provided on the rivet, and an open ring is clamped in the circular groove;

[0026] A connecting plate is provided on one side of the window sash connecting head, and a connecting hole is provided on the connecting plate; the bottom end of the rivet is clamped in the connecting hole, and the chain connecting plate is fixedly connected to the window sash connecting plate through the open ring.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] The utility model provides a single-chain window opener, by setting a chain cavity in the housing of the window opener, so that the chain is set in the chain cavity and the chain is controlled to move in the chain cavity by means of gears to adjust the length of the chain extending outside the window opener, thereby controlling the opening and closing of the window. The structure of the housing of the window opener provided by the utility model is simple and easy to maintain. When there is a problem with the chain or gear, the chain or gear components can be directly opened and replaced without replacing the entire window opener, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a single-chain window opener provided by the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the installation structure of the single chain window opener and the window;

[0031] Figure 3 for Figure 1 An exploded view of the window opener body in FIG.

[0032] Figure 4 for Figure 3 An enlarged view of B in FIG.

[0033] Figure 5 for Figure 1 A schematic diagram of the rotation of the handle of the window opener body, the rotation of the bevel gear and the moving direction of the chain when the single-chain window opener is closing the window;

[0034] Figure 6 for Figure 1 A schematic diagram of the rotation of the handle of the window opener body, the rotation of the bevel gear and the moving direction of the chain when the single chain window opener opens the window;

[0035] Figure 7 is a schematic diagram of the structure of the worm;

[0036] Figure 8 One of the schematic diagrams of the internal structure of the window opener body;

[0037] Fig. 9 for Figure 8 An enlarged view of C in FIG.

[0038] Fig.10 is an overall schematic diagram of the handle assembly;

[0039] Fig.11 for Fig.10 An exploded structural diagram of a handle assembly;

[0040] Fig.12 for Fig.10 A schematic diagram of the structure of the handle in FIG.

[0041] Fig.13 It is a cross-sectional schematic diagram of the handle assembly in an unfolded state or a stowed state;

[0042] Fig.14 The second schematic diagram of the internal structure of the window opener body;

[0043] Fig.15 It is a schematic diagram of the installation structure of the chain, chain connecting plate and window sash connecting plate of the chain assembly;

[0044] Fig.16 It is a schematic diagram of the installation of the chain connecting plate and the window sash connecting plate of the chain assembly;

[0045] Fig.17 It is a structural schematic diagram of a safety lock block;

[0046] Fig.18 for Figure 1 A schematic diagram of a single-chain window opener in which the safety lock block is opened and the chain is extended to a first length;

[0047] Fig.19 for Figure 1 A schematic diagram of a single-chain window opener in which the safety lock block is closed and the chain is extended to a second length;

[0048] Fig. 20 This is the rear view of the base.

[0049] In the figure: 1. Window frame;

[0050] 2. Window sash;

[0051] 3. Window opener body; 31. Housing; 311. Guide block; 312. Guide wheel; 313. Bevel gear; 314. Worm; 3141. Handle connecting part; 3142. Lock gear connecting part; 3143. Bevel gear connecting part; 3144. Smooth part; 315. Sprocket; 316. Guide block boss;

[0052] 32. Base; 321. Chain groove; 322. Screw; 323. Second spring; 324. Guide column; 325. Fixed column; 326. First worm support frame; 327. Second worm support frame; 328. Guide rail; 329. Partition plate;

[0053] 33. Handle assembly; 331. Handle; 3311. First fixing plate; 3312. Second fixing plate; 3313. Fixed shaft; 332. Handle head; 333. Knurled shaft; 334. Fixed shaft sleeve; 335. Connector; 336. Elastic cotter pin; 337. Set screw; 338. Mounting channel;

[0054] 34. limit lock; 341. first spring; 342. pressure plate; 343. lock core; 344. key;

[0055] 4. Chain; 41. Chain connecting plate; 42. Rivet; 43. Circular groove; 44. Open ring;

[0056] 5. Window sash connecting plate; 51. Connecting plate; 52. Connecting hole;

[0057] 6. Safety lock block; 61. Lock block bottom plate; 62. Slide groove; 63. Limit head; 64. Hand-feel bump. DETAILED DESCRIPTION

[0058] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0059] The utility model provides a single chain window opener, such as Figure 1-Figure 20 As shown, it includes a window opener body 3, a chain assembly and a window sash connecting plate 5.

[0060] The window opener body 3 is installed on the lower frame of the window frame 1, and the window sash connecting plate 5 is installed on the lower frame of the window sash 2. The first end of the chain assembly is arranged inside the window opener body 3, and the second end is fixedly connected to the window sash connecting plate 5.

[0061] Specific as Figure 2 As shown, the upper frame of the window frame 1 is hinged with the upper frame of the window sash 2, the window opener body 3 is installed on the lower frame of the window frame 1, the window sash connecting plate 5 is installed on the lower frame of the window sash 2, and the window opener body 3 and the window sash connecting plate 5 are connected by a chain assembly, and the window sash connecting plate 5 can be driven to move by changing the length of the chain assembly to open and close the window. Specifically, when the length of the chain assembly extending outside the window opener body 3 is increased, the window sash connecting plate 5 is driven to move in a direction away from the window frame 1 to open the window; on the contrary, when the length of the chain assembly extending outside the window opener body 3 is reduced, the window sash connecting plate 5 is driven to move in a direction toward the window frame 1 to close the window.

[0062] Preferably, a mounting groove is provided on the lower frame of the window frame 1, the window opener body 3 is installed in the mounting groove, the sash connecting plate 5 is installed on the lower frame of the window sash 2, and the window opener body 3 and the sash connecting plate 5 are connected through a chain assembly to realize opening and closing of the window.

[0063] Preferably, a chain cavity is provided in the window opener body 3, and the chain assembly includes a chain 4, and the chain 4 is provided in the chain cavity. A chain outlet is provided on the window opener body 3, and a first end of the chain 4 extends to the outside of the window opener body 3 through the chain outlet and is fixedly connected to the window sash connecting plate 5, and a second end is fixed inside the window opener body 3. By controlling the chain 4 to move in the chain cavity, the length of the chain 4 extending outside the window opener body 3 is adjusted, and then the chain 4 pushes the movement of the window sash connecting plate 5 to drive the movement of the window sash 2, so as to realize the opening and closing of the window.

[0064] In addition, when the chain outlet on the window opener body 3 in the utility model is opened on the left side of the window opener body 3, the chain 4 extends from the left side of the window opener body 3, and the window opener is a left window opener, as shown in the schematic diagram of the window opener given in this embodiment; on the contrary, when the chain outlet on the window opener body 3 is opened on the right side of the window opener body 3, the chain 4 extends from the right side of the window opener body 3, and the window opener is a right window opener.

[0065] Preferably, if Figure 3 and Figure 4 As shown, the window opener body 3 includes a housing 31 and a base 32, and the base 32 is fixedly connected to the housing 31 by screws 322 to form a chain cavity. A chain groove 321 is provided in the base 32, and the chain groove 321 includes a U-shaped groove and an outlet groove. Among them, the first outlet of the U-shaped groove faces the outlet groove and is spaced from the outlet groove to avoid friction between the chain 4 in the U-shaped groove and the chain 4 in the outlet groove.

[0066] The second outlet of the U-shaped groove is connected to the first outlet of the outlet groove, the second outlet of the outlet groove is connected to the chain outlet, and the second outlet of the outlet groove is connected to the chain outlet. The second outlet of the outlet groove is arranged on the first side surface of the base 32, and the second side surface is the side surface of the base 32 facing the window sash connecting plate 5.

[0067] The chain 4 is located in the chain groove 321, and the first end of the chain 4 is fixed to the first outlet of the U-shaped groove through the fixing column 325, and the second end extends to the outside of the window opener body 3 through the second outlet of the outlet groove and the chain outlet and is fixedly connected to the window sash connecting plate 5. By controlling the chain 4 to move in the chain groove 321, the length of the chain 4 located outside the window opener body 3 is controlled and adjusted to control the movement of the window sash connecting plate 5, thereby pushing the window sash 2 to move away from the window frame 1 or to move closer to the window frame 1, so as to open or close the window.

[0068] More preferably, if Figure 2 and Figure 3As shown, the window opener body 3 also includes a bevel gear 313, a worm 314 and a guide rail 328. The guide rail 328 is arranged in the base 32, and the guide rail 328 is located in the middle of the U-shaped groove to isolate the chain 4 located in the U-shaped groove. A guide block 311 is also provided on the guide rail 328, and the guide block 311 is clamped above the chain 4. When the chain 4 moves in the chain groove 321, the guide block 311 slides left and right along the guide rail 328. The left and right sliding is as shown in FIG. Figure 5 AA direction shown.

[0069] Preferably, if Fig.14 As shown, the bottom of the guide block 311 is also provided with a guide wheel 312 and a guide block boss 316. The bottoms of the guide wheel 312 and the guide block boss 316 are both located in the guide rail 328 and slide in the guide rail 328. That is, when the guide block 311 slides on the guide rail 328 under the action of the chain 4, the guide wheel 312 and the guide block boss 316 both slide in the guide rail 328, and the guide block 311 can be guided by the guide wheel 312 and the guide block boss 316. Similarly, one end of the guide block boss 316 is fixedly connected to the guide block 311, and the other end is located in the guide rail 328. The guide wheel 312 is located between the guide block boss 316 and the chain 4, and the guide wheel 312 and the guide block boss 316 slide synchronously in the guide rail 328 to guide the guide block 311, that is, guide the chain 4 to prevent the chain 4 from being knotted or stuck.

[0070] Preferably, if Fig.17 , Fig.18 and Fig.19 As shown, the window opener body 3 also includes a safety lock block 6. A lock block mounting hole is provided on the base 32. The safety lock block 6 is installed in the lock block mounting hole of the base 32. The safety lock block 6 includes a lock block bottom plate 61, a slide groove 62 is provided on the lock block bottom plate 61, and a limit head 63 moving in the slide groove 62 is provided in the slide groove 62. Hand-feeling protrusions 64 are symmetrically provided on both sides of the limit head 63 of the lock block bottom plate 61, and the hand-feeling protrusions 64 can assist in dragging the limit head 63 to slide in the slide groove 62.

[0071] By sliding the limit head 63 of the safety lock block 6 into the lock block mounting hole, the guide wheel 312 on the guide rail 328 is limited. That is, when the window is opened, when the guide wheel 312 of the guide block 311 moves to the lock block mounting hole, it is blocked by the limit head 63 of the safety lock block 6. At this time, the window cannot be opened further. At this time, the maximum length of the chain 4 outside the window opener body 3 is limited to the first length. That is, the utility model limits the opening degree of the window by setting the safety lock block 6 to avoid the window opening being too large and causing safety hazards, thereby ensuring the safe use of the window. Specifically, as Fig.17As shown, the limit head 63 is slid into the lock block mounting hole, and the limit head 63 protrudes from the guide rail 328. When the window is opened, the handle assembly 33 drives the worm 314 to rotate, and then drives the bevel gear 313 to rotate to synchronously drive the chain 4 to move in the chain groove 321, and at the same time, the guide block 311 moves toward the direction of the worm 314 under the drive of the chain 4. When the guide block 311 moves to the lock block mounting hole, the limit head 63 in the guide rail 328 limits the guide block protrusion 316 of the guide block 311, and the window cannot be opened further. At this time, the length of the chain 4 extending outside the window opener body 3 is limited to the first length. The first length refers to the maximum length of the chain 4 extending outside the window opener body 3 when the safety lock is opened.

[0072] By setting the safety lock block 6, the opening degree of the window can be limited to avoid danger caused by excessive window opening. For example, on rainy days or when there are animals, by limiting the opening degree of the window, indoor ventilation can be ensured, and dangers such as rain entering the room or animals falling from the window can be avoided. In actual use, the user can determine whether to open the safety lock block 6 when installing the window opener according to his own needs.

[0073] On the contrary, when the safety lock block 6 is not opened, that is, the limit head 63 of the safety lock block 6 will slide out of the lock block installation hole, and the limit head 63 does not exist on the guide rail 328. During the window opening process, the guide block 311 will not be restricted by the limit head 63 when moving toward the worm 314, and the opening angle of the window is not restricted at this time, and the maximum length of the chain 4 outside the window opener body 3 is the second length. The second length refers to the maximum length of the chain 4 extending outside the window opener body 3 when the safety lock is not opened.

[0074] The second length is greater than the first length, and the second length is less than the length of the chain 4. Specifically, for example, when the second length is 300 mm, the first length can be limited to 120 mm. When the safety lock block 6 is opened, the guide block 311 is limited at the lock block mounting hole, and the length extending to the outside of the window opener body 3 is limited to 120 mm, so as to prevent the risk of falling due to misoperation of children or animals. On the contrary, when the safety lock block 6 is not opened, the guide block 311 is not limited, and the guide block 311 can slide in the full stroke in the guide rail 328, and the length extending to the outside of the window opener body 3 can reach a maximum of 300 mm, and the opening angle of the window is at its maximum.

[0075] In addition, if Fig. 20 As shown, opening and closing signs are set on both sides of the lock buckle installation hole at the bottom of the base 32 to indicate the opening and closing of the safety lock block 6.

[0076] More preferably, the bevel gear 313 is disposed at the interface between the outlet groove and the U-shaped groove, and the sprocket 315 at the bottom of the bevel gear 313 is gear-connected with the chain 4. The rotation of the bevel gear 313 drives the movement of the chain 4, thereby realizing the movement of the chain 4 in the chain groove 321, so as to adjust the length of the chain 4 extending outside the window opener body 3, and realize the opening and closing of the window.

[0077] The worm 314 is arranged above the chain 4 and connected to the top gear of the bevel gear 313. The rotation of the worm 314 drives the rotation of the bevel gear 313, and then the chain 4 is driven to move in the chain groove 321 through the bottom sprocket 315 of the bevel gear 313. At the same time, the guide block 311 slides on the guide rail 328 under the action of the chain 4 to ensure the smooth movement of the chain 4.

[0078] Preferably, the window opener body 3 includes a handle assembly 33. The housing 31 is provided with a handle mounting hole, one end of the handle assembly 33 is threadedly connected to the worm 314 through the handle mounting hole, and the worm 314 is driven to rotate by rotating the handle assembly 33, and then the chain 4 is driven to move in the chain groove 321 through the bevel gear 313.

[0079] More specifically, Figure 7 The worm 314 includes a smooth portion 3144, a helical gear connection portion 3143 and a handle connection portion 3141 which are arranged sequentially from the bottom to the top. Figure 4 As shown, a first worm support frame 326 and a second worm support frame 327 are provided in the base 32, and a worm groove is provided on the first worm support frame 326, and the first worm support frame 326 is provided below the worm 314 to support the worm 314. Specifically, the first worm support frame 326 and the second worm support frame 327 are provided between the first outlet and the outlet slot of the U-shaped slot.

[0080] The smooth portion 3144 is located in the worm groove, and the worm support frame is used to support the worm 314 so that the worm 314 is located above the chain 4. Specifically, the first worm support frame 326 is lower than the second worm support frame 327, so that the worm 314 is tilted above the chain 4.

[0081] The bevel gear connecting portion 3143 is connected to the top gear of the bevel gear 313 , and the rotation of the worm 314 drives the rotation of the bevel gear 313 , thereby driving the movement of the chain 4 .

[0082] The handle connecting portion 3141 is threadedly connected to the handle assembly 33. The handle assembly 33 is rotated to drive the worm 314 to rotate, and then the worm 314 drives the bevel gear 313 to rotate, so as to drive the chain 4 to move in the chain groove 321, and at the same time, the chain 4 drives the guide block 311 to slide left and right on the guide rail 328.

[0083] Specifically, for the left window opener provided by the present invention, Figure 5 As shown, when the handle assembly 33 is shaken clockwise, the bevel gear 313 is driven to rotate counterclockwise through the worm 314, thereby driving the chain 4 to move toward the inside of the window opener body 3, and the guide block 311 moves to the right. At this time, the window sash connecting plate 5 moves backward under the drive of the chain 4 to close the window.

[0084] like Figure 6 As shown, when the handle assembly 33 is shaken counterclockwise, the bevel gear 313 is driven to rotate clockwise through the worm 314, thereby driving the chain 4 to move outside the window opener body 3, and the guide block 311 slides to the left. At this time, the window sash connecting plate 5 moves forward driven by the chain 4 to open the window.

[0085] Preferably, if Figure 3 , Figure 8 and Fig. 9 As shown, the window opener body 3 further includes a limit lock 34, a first spring 341 and a pressure plate 342. The pressure plate 342 is arranged on the top of the bevel gear 313, and the limit lock 34 is arranged on the pressure plate 342, and the limit lock 34 is supported by the pressure plate 342, and the limit lock 34 is also supported above the bevel gear 313, so that the limit lock 34 can contact with the worm 314.

[0086] More specifically, a pawl is provided at one end of the limit lock 34 and a keyhole is provided at the other end. The worm 314 further includes a lock gear connecting portion 3142 , which is provided between the bevel gear connecting portion 3143 and the handle connecting portion 3141 .

[0087] The housing 31 of the window opener body 3 is provided with a lock hole, in which a lock core 343 is installed, and a limiting convex column is provided at the bottom of the lock core 343, and the limiting convex column is located in the keyhole of the limiting lock 34. The side of the lock core 343 is also fixedly connected to the limiting lock 34 through a first spring 341.

[0088] The key 344 is rotated to drive the lock core 343 to rotate a preset angle, such as in this embodiment, the key 344 is rotated clockwise to drive the lock core 343 to rotate 90 degrees, so that the lock core 343 compresses the first spring 341, and then the limit lock 34 is driven to move in the direction of the worm 314 under the action of the first spring 341, so that the pawl of the limit lock 34 contacts the lock gear connecting part 3142 of the worm 314 to lock the worm 314, and the worm 314 can only rotate in one direction. After the worm 314 provided in this embodiment is locked by the pawl of the limit lock 34, the worm 314 can only rotate clockwise, and the window can only be closed but not opened. The limit lock 34 can realize the rotation of the worm 314 in one direction, and the function of the window can only be closed but not opened is realized, so as to prevent children or animals from accidentally touching the window, which may cause the window to open too large and cause danger.

[0089] Similarly, by rotating the key 344 to reset the lock core 343 in the lock hole, the first spring 341 is pulled through the limit lock 34, and the limit lock 34 is driven to move away from the worm 314 under the action of the first spring 341, so that the pawl of the limit lock 34 is separated from the lock gear connecting part 3142 of the worm 314 to release the limit lock 34. At this time, the worm 314 is not in a locked state, and the worm 314 can rotate clockwise or counterclockwise, and the window can be opened or closed.

[0090] More specifically, the limit lock 34 includes a first component, a second component and a third component, and the first component is arranged perpendicularly to the second component, and the second component is arranged perpendicularly to the third component; a pawl is arranged at the first end of the third component, and the second end is connected to the first end of the second component, and the second end of the second component is connected to the first end of the first component, and a keyhole is arranged at the second end of the first component; a spring installation groove is also arranged in the middle of the third component, and the first spring 341 is arranged in the spring installation groove, and one end of the first spring 341 is fixedly connected to the third component, and the other end is fixedly connected to the lock core 343. More preferably, the limit lock 34 is formed by bending a stainless steel plate, that is, the first component, the second component and the third component are an integrated structure.

[0091] like Fig.10 , Fig.11 and Fig.12As shown, the handle assembly 33 includes a handle head 332, a knurled shaft 333, a fixed sleeve 334, a handle 331, a connector 335, an elastic cotter pin 336 and a set screw 337. The handle 331 includes a first fixed plate 3311, a second fixed plate 3312 and a fixed shaft 3313. The fixed shaft 3313 is arranged at one end of the first fixed plate 3311 and one end of the second fixed plate 3312, so that the first fixed plate 3311 and the second fixed plate 3312 are arranged parallel and symmetrically. The fixed sleeve 334 is sleeved on the outside of the fixed shaft 3313, one end of the knurled shaft 333 is inserted into the inside of the fixed sleeve 334, and the other end is inserted into the inside of the handle head 332. The handle head 332 is driven to rotate 360 ​​degrees by the rotation of the knurled shaft 333 in the fixed sleeve 334.

[0092] The other end of the first fixing plate 3311, the other end of the second fixing plate 3312, and one end of the connector 335 are all provided with mounting holes. The elastic cotter pin 336 is sequentially inserted into the mounting hole of the first fixing plate 3311, the mounting hole of the connector 335, and the mounting hole of the second fixing plate 3312 to set the connector 335 between the first fixing plate 3311 and the second fixing plate 3312.

[0093] The middle of the connector 335 is provided with a mounting channel 338 with an internal thread, and the handle connecting portion 3141 of the worm 314 is installed in the mounting channel 338 and is threadedly connected to the connector 335, and then the worm 314 is driven to rotate by rotating the handle assembly 33. A set screw 337 is also installed in the middle of the other end of the connector 335, and the handle connecting portion 3141 of the worm 314 is fixed by the set screw 337. In this way, when the handle assembly 33 is rotated clockwise or counterclockwise, the connector 335 drives the worm 314 to rotate clockwise or counterclockwise, and then drives the bevel gear 313 to rotate counterclockwise or clockwise, so as to drive the window to close or open.

[0094] In addition, the utility model connects the handle 331 and the connector 335 through an elastic cotter pin 336. Fig.13 As shown, by lifting the handle 331 to be in the unfolded state, it is convenient for the user to better operate the handle 331; by pressing the handle 331 downward to be in the retracted state, it is better to store it, as shown in FIG. Figure 1 and Figure 2 As shown, the handle 331 is stored to make the window opener more beautiful.

[0095] Preferably, if Figure 3As shown, the utility model further includes a guide column 324 and a second spring 323. The guide column 324 and the second spring 323 are arranged at one end of the base 32 provided with a chain outlet, and are used to guide the chain 4 entering and exiting the chain outlet. One end of the guide column 324 is fixedly connected to the side of the base 32 facing the outlet groove through the second spring 323, and the other end faces the chain outlet and extends out of the second outlet of the outlet groove, that is, extends out of the chain outlet, so as to guide the entry and exit of the chain 4. At the same time, an arc-shaped partition 329 is also arranged between the second spring 323, the guide column 324 and the chain groove 321, and the arc-shaped partition 329 is arranged at the connection between the U-shaped groove and the outlet groove, and the arc-shaped partition 329 can make the chain 4 in the U-shaped groove move more smoothly to the outlet groove or the chain 4 in the outlet groove move more smoothly to the U-shaped groove. At the same time, the arc-shaped partition plate 329 also isolates the second spring 323 from the chain 4 so that the chain 4 rubs the second spring 323 .

[0096] Preferably, if Fig.15 As shown, the chain assembly also includes a chain connecting plate 41. One end of the chain connecting plate 41 is fixedly connected to one end of the chain, and a rivet 42 is provided at the bottom of the other end. A circular groove 43 is provided on the rivet 42, and an open ring 44 is clamped in the circular groove 43. A connecting plate 51 is provided on one side of the window sash connecting plate 5, and a connecting hole 52 is provided on the connecting plate 51. The bottom end of the rivet 42 is clamped in the connecting hole 52, and the chain connecting plate 41 is fixedly connected to the window sash connecting plate 5 through the open ring 44, as shown in FIG. Fig.15 As shown, the open ring 44 is first installed in the circular groove 43, and then the rivet 42 of the chain connecting plate 41 is pressed down toward the connecting hole 52 of the window sash connecting plate 5, so that the chain connecting plate 41 is fixedly connected to the window sash connecting plate 5 and fixed through the open ring 44. This installation method is simple, convenient and easy to operate.

[0097] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A single chain window opener, characterized in that: include: A window opener body, a chain assembly and a window sash connecting plate, wherein the window opener body is mounted on the lower frame of the window frame, and the window sash connecting plate is mounted on the lower frame of the window sash; the first end of the chain assembly is arranged inside the window opener body, and the second end is fixedly connected to the window sash connecting plate; A chain cavity is provided in the window opener body, and the chain assembly includes a chain, and the chain is provided in the chain cavity; a chain outlet is provided on the window opener body, a first end of the chain extends to the outside of the window opener body through the chain outlet and is connected to the window sash connecting plate, and a second end is fixed to the inside of the window opener body; the chain is controlled to move in the chain cavity to adjust the length of the chain extending to the outside of the window opener body, and then the window sash connecting plate is pushed to move by the chain to drive the movement of the window sash, thereby realizing the opening and closing of the window.

2. The single chain window opener according to claim 1, characterized in that: The window opener body comprises a base and a shell, and the base is fixedly connected to the shell to form the chain cavity; a chain groove is arranged in the base, and the chain groove comprises a U-shaped groove and an outlet groove, the first outlet of the U-shaped groove faces the outlet groove and is spaced apart from the outlet groove; the second outlet of the U-shaped groove is communicated with the first outlet of the outlet groove, and the second outlet of the outlet groove is communicated with the chain outlet; The chain is located in the chain groove, and the first end of the chain is fixed to the first outlet of the U-shaped groove, the second end passes through the second outlet of the outlet groove, and the chain outlet extends outside the window opener body and is fixedly connected to the window sash connecting plate; By controlling the chain to move in the chain groove, the length of the chain located outside the window opener body is controlled and adjusted to control the movement of the window sash connecting plate, thereby pushing the window sash to move away from the window frame or towards the window frame.

3. The single chain window opener according to claim 2, characterized in that: The window opener body further comprises a bevel gear, a worm and a guide rail; wherein the guide rail is arranged in the base and is located in the middle of the U-shaped groove; a guide block is also arranged on the guide rail, and the guide block is clamped above the chain, and when the chain moves in the chain groove, the guide block slides left and right along the guide rail; The bevel gear is arranged at the interface between the outlet groove and the U-shaped groove, and the sprocket at the bottom of the bevel gear is connected to the chain gear; the worm is arranged above the chain and connected to the top gear of the bevel gear; the bevel gear is driven to rotate by the worm, and then the chain is driven to move in the chain groove by the bevel gear, and at the same time, the guide block slides on the guide rail under the action of the chain.

4. The single chain window opener according to claim 3, characterized in that: The window opener body also includes a handle assembly; a handle mounting hole is provided on the housing, one end of the handle assembly is threadedly connected to the worm through the handle mounting hole, and the worm is driven to rotate by rotating the handle assembly, and then the chain is driven to move in the chain groove through the bevel gear; The worm comprises a smooth portion, a bevel gear connection portion and a handle connection portion which are sequentially arranged from the bottom to the top; wherein a first worm support frame and a second worm support frame are arranged in the base, and the first worm support frame and the second worm support frame are both arranged between the first outlet and the outlet groove of the U-shaped groove, located below the worm, and used to support the worm; a worm groove is arranged on the first worm support frame, and the smooth portion is arranged in the worm groove, so that the worm is located above the chain; The bevel gear connecting portion is connected to the bevel gear, and the handle connecting portion is threadedly connected to the handle assembly; the worm is driven to rotate by rotating the handle assembly, and then the bevel gear is driven to rotate by the worm to drive the chain to move in the chain groove, and at the same time, the guide block is driven to slide on the guide rail by the chain.

5. The single chain window opener according to claim 4, characterized in that: The window opener body further comprises a limit lock, a first spring and a pressure plate; wherein the pressure plate is fixed to the top of the bevel gear, and the limit lock is arranged above the pressure plate, and the limit lock is supported by the pressure plate; The limit lock has a pawl at one end and a keyhole at the other end; the worm further includes a lock gear connecting portion, which is arranged between the bevel gear connecting portion and the handle connecting portion; A lock hole is provided on the outer shell of the window opener body, a lock core is installed in the lock hole, a limiting protrusion is provided at the bottom of the lock core, and the limiting protrusion is located in the keyhole of the limiting lock; the side surface of the lock core is also connected to the limiting lock through a first spring; the lock core in the lock hole is rotated by a preset angle by a key to compress the first spring, and then the limiting lock is driven to move toward the worm under the action of the first spring and the pawl of the limiting lock is contacted with the lock gear connecting part of the worm to lock the worm; the lock core in the lock hole is reset by the key to pull the first spring and drive the limiting lock to move in a direction away from the worm under the action of the first spring and the pawl of the limiting lock is separated from the lock gear connecting part of the worm to release the worm.

6. The single chain window opener according to claim 4, characterized in that: The handle assembly includes a handle head, a knurled shaft, a fixed sleeve, a handle, a connector, an elastic cotter pin and a set screw; wherein the handle includes a first fixed plate, a second fixed plate and a fixed shaft, and the fixed shaft is arranged at one end of the first fixed plate and one end of the second fixed plate, so that the first fixed plate and the second fixed plate are arranged in parallel and symmetrically; The fixed sleeve is sleeved on the outside of the fixed shaft; one end of the knurled shaft is inserted into the inside of the fixed sleeve, and the other end is inserted into the inside of the handle head; the knurled shaft rotates in the fixed sleeve to drive the handle head to rotate 360 ​​degrees; The other end of the first fixing plate, the other end of the second fixing plate, and one end of the connecting head are all provided with mounting holes, and the elastic cotter pin is sequentially inserted into the mounting hole of the first fixing plate, the mounting hole of the connecting head, and the mounting hole of the second fixing plate, so as to arrange the connecting head between the first fixing plate and the second fixing plate; A mounting channel with an internal thread is provided in the middle of the connecting head, and the handle connecting part of the worm is installed in the mounting channel and is threadedly connected to the connecting head, so that the worm is driven to rotate by rotating the handle assembly; a set screw is also installed in the middle of the other end of the connecting head, and the handle connecting part of the worm is fixed by the set screw.

7. The single chain window opener according to claim 3, characterized in that: A guide wheel and a guide block boss are also provided at the bottom of the guide block; wherein, the guide wheel and the guide block boss both slide in the guide rail, and the guide wheel is provided between the guide block boss and the chain; when the chain slides in the chain groove, the guide wheel and the guide block boss are driven to slide in the guide rail.

8. The single chain window opener according to claim 7, characterized in that: The window opener body also includes a safety lock block; the base is also provided with a lock block mounting hole, and the safety lock block is installed in the lock block mounting hole of the base; the safety lock block includes a lock block bottom plate, and the lock block bottom plate is provided with a slide groove and a limit head, and the limit head slides in the slide groove; when the limit head of the safety lock block is slid into the lock block mounting hole, the guide block boss on the guide rail is limited, and the maximum length of the chain extending to the outside of the window opener body is limited to a first length; when the limit head of the safety lock block is slid out of the lock block mounting hole, the limit on the guide block boss on the guide rail is released, and the maximum length of the chain extending to the outside of the window opener body is a second length; wherein, the second length is greater than the first length, and the second length is less than the length of the chain.

9. The single chain window opener according to claim 2, characterized in that: The window opener body also includes a guide column and a second spring; wherein the guide column and the second spring are installed at one end of the base where a chain outlet is provided; one end of the guide column is fixedly connected to the side of the base facing the outlet groove through the second spring, and the other end faces the chain outlet and extends out of the chain outlet, so as to guide the chain received by the chain outlet.

10. The single chain window opener according to claim 1, characterized in that: The chain assembly further comprises a chain connecting plate; one end of the chain connecting plate is fixedly connected to one end of the chain, and a rivet is provided at the bottom of the other end, a circular groove is provided on the rivet, and an open ring is clamped in the circular groove; A connecting plate is provided on one side of the window sash connecting head, and a connecting hole is provided on the connecting plate; the bottom end of the rivet is clamped in the connecting hole, and the chain connecting plate is fixedly connected to the window sash connecting plate through the open ring.

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