Dynamic locking device of hollow built-in shutter

Abstract

The utility model discloses a dynamic locking device of a hollow built-in shutter. The dynamic locking device comprises a limiting toothed plate body frame, a linkage transmission rod, an operation shifting block and a locking clamping block. The locking fixture block is matched with the inclined surface of the raised head of the operation shifting block through the trapezoidal convex block, and the tooth foot is meshed with the limiting toothed plate to realize locking; a transmission rod reset spring and a locking clamping block reset spring act synergistically, and the locking state is controlled through dynamic balance of handle tension and spring force. When a user pulls the handle, the linkage transmission rod moves up and down to enable the locking clamping block to be separated from the limiting toothed plate, and the shutter can freely ascend and descend. After the hand is loosened, the spring resets to push the locking clamping block to be meshed again, and rigid locking is achieved. The device solves the problem of sliding deviation caused by dynamic change of shutter weight of an existing constant force balancing device, is particularly suitable for large shutters with the area larger than 3 m < 2 >, has the advantages of being simplified in structure, rapid in response and high in locking reliability, improves the positioning accuracy by more than 40%, and does not need manual intervention or a complex control system.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow built-in louver glass window technical field, especially a dynamic locking device of hollow built-in louver. BACKGROUND

[0002] With the improvement of building energy-saving demand, hollow built-in louver is widely used because of its sun-shading and heat-insulating integrated function. In the prior art, the lifting balance of hollow built-in louver is mainly realized by counterweight or constant force spring. However, such technology has significant defects in practical application:

[0003] (1) Force balance mismatch problem: during the lifting process of the louver, its actual weight dynamically increases and decreases due to the change of the stacking height of the blades, while the balancing force provided by the counterweight or constant force spring is a fixed value, resulting in that the louver cannot realize accurate force matching in the static state. Especially in large louvers (such as area exceeding 3m 2 ), the weight variation range is larger, and when the user releases the handle after operation, the louver is easy to slide due to the remaining unbalanced force, which seriously affects the positioning accuracy and use experience.

[0004] (2) Limitation of existing improvement scheme: to solve the above problems, some technologies try to adjust the position of the counterweight or optimize the spring parameters to adapt to louvers of different sizes, however, such scheme needs manual adjustment and cannot dynamically respond to the weight change during the lifting process, and still has the risk of sliding. In addition, the complex adjustment structure increases the manufacturing cost and failure rate.

[0005] (3) Locking technology bottleneck: the existing locking mechanism mainly uses friction or ratchet structure to realize position fixing, but such design is easy to cause locking failure due to wear in frequent operation, and is difficult to adapt to the dynamic weight change characteristics of the louver, and the locking reliability is significantly reduced after long-term use.

[0006] In summary, the balance and locking technology of the existing hollow built-in louver has the following common problems:

[0007] a. Constant force device does not match the dynamic weight change, resulting in accidental sliding.

[0008] b. The locking mechanism relies on static friction or complex adjustment, and has poor reliability and high maintenance cost.

[0009] c. The stability problem of large-size louver is particularly prominent, which restricts the application range of the product.

[0010] Therefore, it is urgent to develop a locking device that can dynamically respond to the weight change of the louver, without manual intervention and with simplified structure, to improve the operation stability and service life of the hollow built-in louver. UTILITY MODEL CONTENTS

[0011] The utility model discloses a technical purpose is: provide a hollow built-in louver's dynamic locking device, through the dynamic balance control locking mechanism of mechanical force and spring reset force of pulling handle, realize in louver lifting process adaptive locking and unlocking, to solve the existing constant force balance device because louver weight dynamic change leads to sliding deviation, large -size louver locking reliability is poor, and traditional locking mechanism relies on manual adjustment or complex control system etc.

[0012] The utility model discloses a technical problem that the technical scheme that solves solves is:

[0013] A hollow built-in louver's dynamic locking device, characterized by, including:

[0014] Limiting toothed plate, fixed in the side wall of window body side frame;

[0015] Main body frame, present cuboid frame, place in window body side frame;

[0016] Linkage transmission rod, up and down through the main body frame;

[0017] Operating knob, fixed in the middle of linkage transmission rod and located in the main body frame;

[0018] Transmission rod reset spring, including two, respectively wear on linkage transmission rod and located operating knob's upper and lower two ends, and with the upper and lower inner wall of main body frame is resisted;

[0019] Locking block, including trapezoidal lug and tooth foot, the trapezoidal lug with operating knob is resisted, the tooth foot is out of the side wall of main body frame and is engaged with limiting toothed plate;

[0020] Locking block reset spring, including two, respectively set up in the tooth foot both sides and located between locking block and main body frame side wall;When operating knob removes the strong compression of locking block, separates tooth foot and limiting toothed plate under the elastic force action of locking block reset spring.

[0021] Further preferred technical scheme, the top of main body frame is equipped with dynamic pulley seat, and the dynamic pulley seat installs dynamic pulley for connecting louver curtain pull rope.

[0022] Further preferred technical scheme, the bottom of linkage transmission rod is connected with control handle.

[0023] Further preferred technical scheme, the left and right side walls of main body frame are equipped with limiting slot and tooth foot avoidance mouth respectively.

[0024] Further preferred technical scheme, the trapezoidal lug is isosceles trapezoid, and the tooth foot is located in the bottom of isosceles trapezoid and is inserted in tooth foot avoidance mouth.

[0025] Further preferred technical solutions, the operation of the dial block is provided with a limit foot and a convex head, the limit foot is inserted into the limit groove to limit the movement stroke of the operation dial block, and the convex head is always in contact with the inner side of the trapezoidal convex block.

[0026] The beneficial effects of the utility model are:

[0027] 1. Dynamic locking mechanism, improve stability

[0028] Through the mechanical linkage of the linkage transmission rod and the operation dial block, and the synergistic effect of the bidirectional reset force of the transmission rod reset spring and the locking block reset spring, the dynamic balance control of tension and spring force is realized. When the user pulls the handle, the locking block reset spring opens to reset the locking block, the tooth foot is disengaged from the limit tooth plate, and the shutter lifting is unlocked. After releasing the hand, the transmission rod reset spring is automatically reset, the convex head of the operation dial block presses the locking block, and then the locking block reset spring is compressed, the tooth foot reengages the limit tooth plate, and a rigid locking is formed. This design avoids the sliding problem caused by the mismatch between the traditional constant force device and the weight change, especially suitable for large-sized shutters with an area of more than 3m 2 , and the positioning accuracy is improved by more than 40%.

[0029] 2. Simplified structure, enhanced reliability

[0030] The locking block adopts an isosceles trapezoidal convex block matched with the inclined surface of the convex head of the operation dial block, and the precise locking and unlocking actions are realized by using the guiding effect of geometric shapes, reducing mechanical wear. At the same time, the limit groove of the main frame cooperates with the limit foot of the operation dial block to limit the movement stroke, so that the locking block is always in the state of being pressed by the operation dial block, avoiding the tooth foot from being pulled out of the tooth foot avoiding port.

[0031] 3. Convenient operation and self-adaptive ability

[0032] The linkage transmission rod is directly connected with the control handle, and the user can complete the unlocking by pulling up or pulling down, without complex operation. The dynamic pulley seat on the top of the main frame integrates the shutter cord dynamic pulley, ensuring the synchronization of the lifting action and the locking mechanism, and the spring reset process does not need manual intervention, self-adapting to the shutter weight change, reducing the risk of misoperation.

[0033] 4. Modular design, expand applicability

[0034] The left and right side walls of the main frame are provided with tooth foot avoiding ports and limit grooves, facilitating the installation and maintenance of the locking block. This design is compatible with the customization needs of different sizes of shutters, and can adapt to the dynamic load of the shutter by adjusting the pre-tightening force of the transmission rod reset spring, expanding the application scenarios of the product.

[0035] 5. Low maintenance cost and long service life

[0036] The tooth stem of the locking block and the limiting tooth plate adopt meshing rigid contact, compared with the traditional friction locking, material wear caused by frequent operation is avoided; the reset spring adopts 60Si2MnA material and is subjected to warm and high-pressure treatment, has excellent fatigue resistance, can withstand more than 100,000 times of cycle operation, and significantly reduces the maintenance frequency. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the dynamic locking device.

[0038] Figure 2 It is a schematic diagram of the structure of the limiting tooth plate in the window side frame.

[0039] Figure 3 It is a schematic diagram of the structure of the main frame.

[0040] Figure 4 It is a schematic diagram of the structure of the operation knob and the locking block.

[0041] Figure 5 It is a schematic diagram of the working state of the dynamic locking device in the window side frame.

[0042] In the figure: 100-limiting tooth plate, 200-main frame, 201-limiting groove, 202-tooth stem avoiding port, 203-moving pulley seat, 204-moving pulley, 300-linked transmission rod, 400-operation knob, 401-limiting foot, 402-protruding head, 500-transmission rod reset spring, 600-locking block, 601-trapezoidal protruding block, 602-tooth stem, 700-locking block reset spring, 800-window side frame, 900-internal control sliding block. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] The embodiment describes in detail a dynamic locking device of a hollow built-in shutter, and the specific implementation structure is as follows:

[0045] I. Device structure characteristics and connection relationship

[0046] As shown in Figure 2 The limiting tooth plate 100 is a long strip-shaped plastic plate, and a continuous tooth groove is arranged on the surface and fixed to the side wall of the window side frame 800 through a bolt.

[0047] AsFigure 3 The main frame 200 is a cuboid frame made of plastic, which is placed inside the window side frame 800 and can slide up and down along the window side frame 800. Limiting grooves 201 and tooth foot avoiding openings 202 are respectively formed in the left and right side walls of the main frame 200.

[0048] As shown in FIGS. Figure 1 , 4 and 5, the relevant structures and their connection relationships are as follows:

[0049] The linkage transmission rod 300 is a stainless steel round rod, which vertically penetrates the upper and lower end faces of the main frame 200, the bottom end is inserted into the top of the internal control sliding block 900, and is fixedly connected with the internal control sliding block 900 through a shaft pin.

[0050] The operation knob 400 is an injection molded part, which is fixed in the middle of the linkage transmission rod 300. Limiting feet 401 and convex heads 402 are provided on the two sides of the operation knob 400. The limiting feet 401 are inserted into the limiting grooves 201 of the main frame 200, and the convex heads 402 are arc-shaped protrusions, which abut against the inner side of the trapezoidal protrusion 601 of the locking block 600.

[0051] The transmission rod return spring 500 is two spiral compression springs, which are respectively sleeved on the linkage transmission rod 300 and located at the upper and lower ends of the operation knob 400. The two ends abut against the inner wall of the main frame 200 and the operation knob 400.

[0052] The locking block 600 includes an integrally formed trapezoidal protrusion 601 and a tooth foot 602. The trapezoidal protrusion 601 is an isosceles trapezoidal structure, and the top edge inclined surface cooperates with the convex head 402 of the operation knob 400. The tooth foot 602 penetrates out of the tooth foot avoiding opening 202 of the main frame 200 and is engaged with the tooth groove of the limiting tooth plate 100.

[0053] The locking block return spring 700 is two spiral compression springs, which are respectively installed on the two sides of the tooth foot 602. One end is fixed in the base groove of the locking block 600, and the other end abuts against the inner side wall of the main frame 200, providing a return pushing force for pushing the tooth foot 602 of the locking block 600 away from the limiting tooth plate 100.

[0054] As shown in FIGS. Figure 3 The top of the main frame 200 is provided with a movable pulley seat 203, and a movable pulley 204 for connecting the blind pull rope is installed in the movable pulley seat 203, so as to realize the synchronous action of the pull rope lifting and the locking mechanism.

[0055] The transmission rod return spring 500 and the locking block return spring 700 are made of 60Si2MnA material and are subjected to warm and high-pressure treatment.

[0056] II. Working principle

[0057] 1. Unlocking stage (when the user pulls the handle):

[0058] Pulling down or up the control handle, the inner control slider 900 moves down or up, the linkage transmission rod 300 drives the operation block 400 to move down or up, compressing the transmission rod return spring 500 below or above;

[0059] The convex head 402 of the operation block 400 slides along the top edge inclined surface of the trapezoidal block 601, under the elastic force of the locking block return spring 700, the locking block 600 moves to the left side, and the tooth foot 602 is disengaged from the tooth groove of the limiting tooth plate 100.

[0060] At this time, the shutter is in an unlocked state, and the user can freely lift the shutter.

[0061] 2, locking stage (when the user releases the handle):

[0062] The transmission rod return spring 500 rebounds, pushing the operation block 400 and the linkage transmission rod 300 to reset;

[0063] The convex head 402 of the operation block 400 pushes the locking block 600 to move to the right, and the tooth foot 602 re-embeds the tooth groove of the limiting tooth plate 100.

[0064] The inclined surface of the trapezoidal block 601 and the convex head 402 ensures that the tooth foot 602 and the tooth groove of the limiting tooth plate 100 are precisely engaged, forming a rigid lock to prevent the shutter from sliding.

[0065] Three, technical effect verification

[0066] 1, dynamic locking verification:

[0067] During the lifting of the shutter, the actual displacement response time of the locking block 600 is 0.2 seconds, and the meshing gap between the tooth foot 602 and the limiting tooth plate 100 is ≤0.1mm, indicating that the device can respond to weight changes in real time and lock the position.

[0068] 2, life test:

[0069] After 100,000 cycles of operation, the wear of the tooth foot 602 is <5μm, and the elastic attenuation rate of the return spring (500, 700) is <3%, meeting the long-term use requirements.

[0070] It should be noted that in this text, terms such as "including", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0071] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A dynamic locking device for a hollow built-in louver, characterized in that, include: Limiting toothed plate, fixed to the side wall of the window side frame; The main frame is a rectangular frame, placed inside the side frame of the window; A linkage transmission rod runs vertically through the main frame. The operating lever is fixed in the middle of the linkage transmission rod and located within the main frame; The transmission rod return spring includes two springs, which are respectively sleeved on the linkage transmission rod and located at the upper and lower ends of the operating lever, and abut against the upper and lower inner walls of the main frame; The locking block includes a trapezoidal protrusion and a toothed foot. The trapezoidal protrusion abuts against the operating lever block, and the toothed foot extends through the side wall of the main frame and engages with the limiting toothed plate. The locking block return spring includes two springs, which are respectively disposed on both sides of the tooth foot and located between the locking block and the side wall of the main frame; when the operating lever releases the strong pressure on the locking block, the tooth foot and the limiting tooth plate are separated under the elastic force of the locking block return spring.

2. The dynamic locking device for a hollow built-in louver as described in claim 1, characterized in that, The top of the main frame is provided with a movable pulley seat, and a movable pulley for connecting the venetian blind pull rope is installed in the movable pulley seat.

3. The dynamic locking device for a hollow built-in louver as described in claim 1, characterized in that, The bottom end of the linkage transmission rod is connected to the top end of the internal control slider.

4. The dynamic locking device for a hollow built-in louver as described in claim 1, characterized in that, The main frame is provided with limiting grooves and toothed foot clearance openings on its left and right side walls, respectively.

5. The dynamic locking device for a hollow built-in louver as described in claim 4, characterized in that, The trapezoidal protrusion is an isosceles trapezoid, and the toothed foot is located at the base of the isosceles trapezoid and inserted into the toothed foot clearance opening.

6. The dynamic locking device for a hollow built-in louver as described in claim 5, characterized in that, The operating block is provided with a limiting foot and a protrusion. The limiting foot is inserted into the limiting groove to limit the movement stroke of the operating block and ensure that the protrusion always abuts against the inner side of the trapezoidal protrusion.

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