Multi-point lock driving structure

Abstract

The utility model relates to a multi-point lock driving structure which comprises a shell, and an installation cavity is formed in the shell. A lead screw and a motor for driving the lead screw to rotate are arranged in the mounting cavity, the reduction ratio of the motor is smaller than 100, and the end, away from the motor, of the lead screw extends out of the shell to form a hand-cranking end; the periphery of the lead screw is in threaded connection with a nut, and the nut is arranged in the mounting cavity in a sliding mode. The outer side of the nut is connected with a shifting fork assembly, a sliding groove is formed in the shell, and the shifting fork assembly is arranged in the sliding groove in a sliding and penetrating mode. Due to the fact that the reduction ratio of the motor is smaller than 100, and the motor does not have a self-locking function, in the power-off state, the hand-cranking end is manually shaken, the lead screw can be driven to rotate, then the shifting fork assembly is driven to slide, and therefore on-off of the multi-point lock is controlled in a hand-cranking mode under the power-off condition.

Description

Technical Field

[0001] The utility model relates to the technical field of window openers, in particular to a multi-point lock driving structure. Background Art

[0002] Multi-point locks can lock closed window sashes. Common multi-point locks mainly include multiple locking points and a pull plate that links the multiple locking points. The pull plate is provided with a locking pin. The locking pin is moved by a motor-driven fork to realize the electric locking or opening of the multi-point lock. When opening a window sash with a window opener, you need to open the multi-point lock first, and then use the window opener to open the window; when closing the window, you need to use the window opener to close the window first, and then lock the multi-point lock.

[0003] Existing windows are usually provided with chain window openers and multi-point lock drivers respectively, which occupy a large installation space and are not aesthetically pleasing. In addition, the existing multi-point lock drivers cannot be operated when the power is off, which brings inconvenience to the window opening and closing when the power is off. Therefore, it is necessary to design a multi-point lock drive structure integrated in a chain window opener with a clutch to save installation space and facilitate manual operation to lock or open the multi-point lock when the power is off. In combination with a chain window opener with a clutch, the chain window opener can be self-locked by separating the clutch, and the window can be opened and closed manually when the power is off. Summary of the invention

[0004] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a multi-point lock driving structure, which can be integrated on a window opener and can realize the opening and closing of the multi-point lock by hand cranking in the case of power failure.

[0005] In order to solve the above technical problems, the utility model provides a multi-point lock driving structure, including a shell, in which an installation cavity is formed; a lead screw and a motor for driving the lead screw to rotate are arranged in the installation cavity, and the reduction ratio of the motor is less than 100, and one end of the lead screw away from the motor extends out of the shell to form a hand-cranked end; the outer peripheral thread of the lead screw is connected to a nut, and the nut is slidably arranged in the installation cavity; the outer side of the nut is connected to a fork assembly, and a slide groove is arranged on the shell, and the fork assembly is slidably inserted into the slide groove.

[0006] Preferably, the lead screw is a trapezoidal thread lead screw.

[0007] Preferably, the cross-sections of the nut and the installation cavity are both trapezoidal.

[0008] Preferably, a fixing piece is sleeved on the outer periphery of the connection between the motor and the lead screw, and the fixing piece is fixedly connected to the housing; one end of the lead screw is rotatably connected to the fixing piece, and the other end forms the hand-cranked end; the output shaft of the motor extends into the inner periphery of the fixing piece and is connected to the lead screw.

[0009] Preferably, a blocking piece is provided at the end of the shell, the lead screw is rotatably connected to the blocking piece, and one end of the lead screw extending out of the blocking piece forms the hand-cranked end.

[0010] Preferably, two buffer members are provided on the outer periphery of the lead screw, and the two buffer members are respectively located at two ends of the nut.

[0011] Preferably, the fork assembly comprises a detachably connected mounting seat and a fork; the mounting seat is detachably connected to the nut, and the mounting seat is slidably inserted into the slide groove.

[0012] Preferably, a connecting hole connected to the shift fork is provided through the mounting seat.

[0013] The utility model has the following beneficial effects: the multi-point lock driving structure of the utility model is installed in a housing, which is the housing of the window opener, so that the multi-point lock driving structure is integrated with the window opener. In the power-on state, the motor starts, drives the lead screw to rotate, and then drives the nut to slide relative to the housing, thereby driving the fork assembly to slide in the slide groove, and the fork assembly can slide the lock pin of the multi-point lock to achieve the opening or locking of the multi-point lock. Since the motor has a reduction ratio of less than 100 and does not have a self-locking function, in the power-off state, manually shaking the hand crank end can drive the lead screw to rotate, and then drive the fork assembly to slide, thereby realizing the manual control of the multi-point lock switch in the power-off state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 This is a schematic diagram of the structure of the window opener according to an embodiment of the utility model;

[0016] Figure 2 A partial cross-sectional view of a window opener according to an embodiment of the utility model;

[0017] Figure 3 The figure is a schematic diagram of the connection structure of the nut and the fork assembly according to an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1-housing; 11-installation cavity; 12-blocking piece; 13-slideway; 2-screw; 21-hand crank end; 3-motor; 4-fixing piece; 5-nut; 51-installation groove; 6-shift fork assembly; 61-mounting seat; 611-connecting hole; 62-shift fork; 7-buffer. Detailed implementation manners

[0020] Here, it should be noted that the functions, methods, etc. involved in the present utility model are merely conventional adaptive applications of the prior art. Therefore, the improvement of the present utility model over the prior art lies essentially in the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present utility model involves certain functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present utility model is for better explaining the present utility model, so as to better understand the present utility model.

[0021] The embodiments of the technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0022] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0023] As Figure 1 、 Figure 2 and Figure 3 shown, this embodiment provides a multi-point lock drive structure applied to a window opener. The window opener includes a housing 1, an installation cavity 11 is formed inside the housing 1, and the cross-section of the installation cavity 11 is trapezoidal. A lead screw 2 and a motor 3 for driving the rotation of the lead screw 2 are arranged in the installation cavity 11. Specifically, a fixing member 4 is sleeved on the outer periphery at the connection between the motor 3 and the lead screw 2, and the fixing member 4 is fixedly connected to the housing 1 by screws. One end of the lead screw 2 is rotatably connected to the fixing member 4, and the other end extends out of the housing 1 to form a hand-crank end 21. The inner periphery of the hand-crank end 21 has a hexagonal hole. In practice, an operator can insert a hexagonal shaft into the hexagonal hole to drive the rotation of the hand-crank end 21. Specifically, a plugging member 12 is connected to the end of the housing 1 by screws, and the lead screw 2 is rotatably connected to the plugging member 12, and the hand-crank end 21 of the lead screw 2 extends out from the plugging member 12. The output shaft of the motor 3 extends into the inner periphery of the fixing member 4 and is connected to the lead screw 2 to facilitate driving the rotation of the lead screw 2.

[0024] A nut 5 is threadedly connected to the outer periphery of the above-mentioned lead screw 2, and the nut 5 is slidably arranged in the installation cavity 11. Specifically, the cross-section of the nut 5 is also trapezoidal, so that the nut 5 and the installation cavity 11 are slidably matched in the length direction of the housing 1, that is, the nut 5 cannot rotate, so as to be able to convert the rotation of the lead screw 2 into the sliding of the nut 5.

[0025] A fork assembly 6 is connected to the outer side of the nut 5, and the fork assembly 6 specifically includes a mounting seat 61 and a fork 62 connected by screws, wherein the mounting seat 61 is screwed to the nut 5, a mounting groove 51 is provided on the side of the nut 5, one end of the mounting seat 61 is screwed into the mounting groove 51, and a slide groove 13 is provided on the housing 1, and the mounting seat 61 is slidably inserted into the slide groove 13, so that the fork assembly 6 can slide along the length direction of the housing 1.

[0026] In this embodiment, the shift fork 62 cooperates with the lock pin of the multi-point lock of the window sash, and the shift fork 62 shifts the lock pin to achieve the locking or opening of the multi-point lock. The mounting seat 61 is provided with a connecting hole 611 connected to the shift fork 62, so that the shift fork 62 can be connected to the upper side or the lower side of the mounting seat 61, so as to adjust the installation direction of the shift fork 62 according to the multi-point lock structure of the window sash.

[0027] Furthermore, two buffer members 7 are sleeved on the outer periphery of the lead screw 1 , and the two buffer members 7 are respectively located at two ends of the nut 5 to prevent the nut 5 from rigidly colliding with the fixing member 4 or the blocking member 12 .

[0028] In this embodiment, the reduction ratio of the motor 3 is less than 100, so that the motor 3 does not have a self-locking function. When the power is off, the operator can drive the screw 2 to rotate by manually cranking the hand end 21 of the screw 2 to achieve the sliding of the nut 5, and then drive the fork 62 to move the lock pin of the multi-point lock, so that the multi-point lock is locked or opened. It can be seen that the multi-point lock drive structure of this embodiment can achieve the locking or opening of the multi-point lock by motor control or hand control, and it is more flexible to use. In order to prevent the nut 5 from accidentally sliding, the screw 2 of this embodiment is a self-locking screw, specifically a trapezoidal thread screw, so that the screw 2 can maintain a self-locking state when subjected to axial force.

[0029] It should be noted that a chain window opening structure for opening and closing the window is also provided in the housing 1 of this embodiment, so that the window opening structure is integrated with the multi-point lock drive structure. The above window opening structure can refer to the relevant structure of the chain window opener with clutch disclosed in CN211974699U.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A multi-point lock driving structure, characterized in that, Comprising: A housing, within which an installation cavity is formed; A lead screw and a motor for driving the lead screw to rotate are arranged in the installation cavity, the reduction ratio of the motor is less than 100, and one end of the lead screw away from the motor extends out of the housing to form a hand-cranking end; A nut is threadedly connected to the outer periphery of the lead screw, and the nut is slidably arranged in the installation cavity; A fork assembly is connected to the outside of the nut, a chute is arranged on the housing, and the fork assembly slidably passes through the chute.

2. The multi-point lock driving structure according to claim 1, characterized in that: The lead screw is a trapezoidal thread lead screw.

3. The multi-point lock driving structure according to claim 1, characterized in that: The cross-sections of the nut and the installation cavity are both trapezoidal.

4. The multi-point lock driving structure according to claim 1, characterized in that: A fixing member is sleeved on the outer periphery of the connection part between the motor and the lead screw, and the fixing member is fixedly connected to the housing; One end of the lead screw is rotatably connected to the fixing member, and the other end forms the hand-cranking end; The output shaft of the motor extends into the inner periphery of the fixing member and is coupled to the lead screw.

5. The multi-point lock driving structure according to claim 1, characterized in that: A sealing member is arranged at the end of the housing, the lead screw is rotatably connected to the sealing member, and one end of the lead screw extending out of the sealing member forms the hand-cranking end.

6. The multi-point lock driving structure according to claim 1, characterized in that: Two buffer members are sleeved on the outer periphery of the lead screw, and the two buffer members are respectively located at both ends of the nut.

7. The multi-point lock driving structure according to claim 1, characterized in that: The fork assembly includes a mounting seat and a fork which are detachably connected; The mounting seat is detachably connected to the nut, and the mounting seat slidably passes through the chute.

8. The multi-point lock driving structure according to claim 7, characterized in that: A connection hole connected to the fork is formed through the mounting seat.

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