WO2024131892A1 - Device for preventing hands from being jammed and door and window for preventing hands from being jammed - Google Patents

Abstract

A device for preventing the hands from being jammed, comprising: a housing, which is provided with a slide slot (111) extending in the left-right direction, the left end of the slide slot (111) being connected to a snapping slot (112) extending forwards; a swing rod (200), one end thereof being rotatably connected to the housing, the other end of the swing rod (200) protruding backwards out of the housing, a link rod (300) being rotatably connected to the swing rod (200), a positioning column (310) being connected to the link rod (300), and the positioning column (310) being capable of moving in the slide slot (111) and the snapping slot (112); and an elastic assembly, which has a tendency to enable the positioning column (310) to move to the left end of the slide slot (111). Further provided is a door and window for preventing the hands from being jammed, which is provided with said device. Said device and said door and window can effectively achieve an effect of preventing the hands from being jammed, and are also applicable with respect to large-weight door leaves or relatively high door- and window-closing speed.

Description

Anti-pinch finger device and anti-pinch finger door and window Technical Field

The present application relates to a door and window accessory, and in particular to an anti-pinch device and an anti-pinch door and window.

Background technique

When people close the window sash, if they are not careful, they may get their fingers pinched, especially the faster the window sash is closed, the greater the harm to personal safety. In this regard, in order to improve the safety of use, buffers are installed on doors and windows, and rubber strips are added to the anti-pinch parts. However, when installing the buffer, the weight of the door sash must not exceed 100 kilograms, otherwise the buffer is likely to fail. The rubber strips installed to prevent pinching can only work when the door sash is closed with a small force. If the door sash is closed with a large force, it is limited by the deformation buffering capacity of the rubber strips, and if the finger is pinched, it will cause greater harm. Therefore, there is an urgent need for a structure that can prevent the finger from being pinched when the door sash is closed.

Summary of the invention

The purpose of the present application is to provide an anti-pinch device and an anti-pinch door and window to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

The solution to the technical problem solved by this application is:

A finger-prevention device comprises: a shell, which is provided with a slide groove extending in the left-right direction, and the left end of the slide groove is connected to a clamping groove extending forward; a swing rod, one end of which is rotatably connected to the shell, and the other end of the swing rod protrudes backward from the shell, the swing rod is rotatably connected to a connecting rod, and the connecting rod is connected to a positioning column, and the positioning column can move in the slide groove and the clamping groove; an elastic component, which has a tendency to make the positioning column move to the left end of the slide groove.

The technical solution has at least the following beneficial effects: the shell is installed on an external door leaf or door frame, and when the door and window are closed with great force, the part of the swing rod protruding from the shell is against the door frame or door leaf, and the swing rod transmits a large external force to the positioning column through the connecting rod, so that the positioning column overcomes the elastic force of the elastic component and directly slides into the slot. Due to the activity restriction of the positioning column by the slot, the swing rod cannot continue to rotate at this time, thereby preventing the door and window from continuing to close. At this time, the problem of personal injury caused by excessive force when closing the door and window can be prevented. After the external force on the door and window is removed, the elastic force of the elastic component causes the positioning column to return from the slot to the slide slot. When the force applied to close the door and window is small, the external force transmitted to the positioning column by the swing rod through the connecting rod is small, which is not enough to make the positioning column overcome the elastic force of the elastic component and enter the slot. At this time, the positioning column moves to the right in the slide slot, and the swing rod can continue to rotate, thereby not interfering with the closing of the door and window, and the positioning column needs to overcome the elastic force of the elastic component during the rightward movement. At this time, the closing of the door and window can be reduced. speed, thereby effectively reducing the damage caused by pinching fingers. When the doors and windows are opened, the elastic force of the elastic component will make the positioning column return to the left end of the slide slot for use when the doors and windows are closed next time. This can effectively prevent fingers from being pinched. It is also applicable to doors with heavy weight or doors and windows that close quickly, and is more practical.

As a further improvement of the above technical solution, the elastic component includes a tension spring and a spring sheet, the tension spring is connected between the outer shell and the rocker arm, the tension spring has a tendency to rotate the rocker arm backward to protrude from the outer shell, the spring sheet is connected to the outer shell, the spring sheet abuts against the positioning column and has a tendency to press the positioning column backward into the slide groove. When the swing arm is against the external door frame or door leaf, the swing arm rotates and stretches the tension spring. When the door and window are closed with great force, the external force transmitted to the positioning column by the swing arm through the connecting rod directly overcomes the elastic force of the spring sheet and enters the slot, thereby limiting the continued rotation of the swing arm. When the door and window are closed with less force, the external force transmitted to the positioning column by the swing arm through the connecting rod is less than the backward pressure of the spring sheet on the positioning column. As the swing arm continues to rotate, the positioning column moves to the right in the slide slot, thereby not interfering with the closing of the door and window, and the tension spring always provides backward pulling force to the swing arm, which can realize the deceleration buffer when the door and window are closed and the swing arm swings backward to reset. In this way, the tension spring and the spring sheet provide elastic force from different directions, which can make the positioning column move stably in the slot and the slide slot.

As a further improvement of the above technical solution, the spring piece includes a pressing section, a transition section and a connecting section, the middle part of the connecting section arches forward and forms an arc-shaped groove, a positioning pin is inserted in the arc-shaped groove, the positioning pin is connected to the outer shell, the left side of the connecting section extends forward at an angle and presses against the outer shell, the transition section is connected to the right side of the connecting section and extends backward, the pressing section is connected to the rear side of the transition section and extends to the left, and the pressing section presses against the positioning column. The positioning pin is located between the pressing section and the connecting section, and is connected to the arc-shaped groove of the connecting section. When the external force transmitted to the positioning column by the connecting rod presses the pressing section backward, the entire spring sheet can rotate around the positioning pin, and the connecting section against the shell can produce elastic deformation, and the pressing section against the positioning column can also produce elastic deformation. When the pressure of the positioning column is greater than the backward elastic force of the entire spring sheet on the positioning column, the positioning column enters the slot. When the external force on the positioning column is removed, the elastic force of the connecting section and the pressing section will push the positioning column backward out of the slot, thereby causing the positioning column to return to the left end of the slide slot.

As a further improvement of the above technical solution, a clamping block is rotatably connected in the housing and on the swing rod, and a clamping groove is provided on the two clamping blocks on the sides facing each other, and a clamping part is provided at both ends of the tension spring, and the two clamping parts are respectively connected in the two clamping grooves. The tension spring is connected to the two clamping blocks through the clamping parts at both ends, and the two clamping blocks can rotate. When in use, as the swing rod rotates, the two clamping blocks can also be driven to rotate, so that the tension spring can be stretched in a straight line direction, not easily deformed and damaged, and better prevent the tension spring from failing.

As a further improvement of the above technical solution, the swing arm includes a top plate, a bottom plate and a connecting frame, one end of the top plate is rotatably connected to the inner top side of the shell, one end of the bottom plate is rotatably connected to the inner bottom side of the shell, the connecting frame is connected between the top plate and the bottom plate, and one end of the block and the connecting rod are both rotatably connected between the top plate and the bottom plate. The top plate and the bottom plate are rotatably connected to the inner top side and the inner bottom side of the shell respectively, and the swing arm is placed in the shell, so that The exposure of the structure is reduced, making the overall structure more compact. At this time, the rear end of the swing arm protrudes backward from the shell. When rotating, the swing arm can be directly rotated forward and stored in the shell. The connecting frame separates and connects the top plate and the bottom plate. Since the clamping block is rotatably connected between the top plate and the bottom plate, one end of the tension spring also extends between the top plate and the bottom plate. The top plate and the bottom plate are used to limit the tension spring up and down, and the stability of the tension spring when applying force to the swing arm is improved. Similarly, one end of the connecting rod is also rotatably connected between the top plate and the bottom plate. The top plate and the bottom plate can be used to limit the connecting rod up and down, and the stability when external force is transmitted to the connecting rod is improved.

As a further improvement of the above technical solution, the clamping groove passes through the clamping block in the up-down direction, the clamping part enters the clamping groove in the up-down direction, the outer diameter of the clamping part gradually decreases from both ends to the middle, and both sides of the notch of the clamping groove have limit blocks protruding toward the middle of the clamping part. When the tension spring is installed on the clamping block, the clamping part of the tension spring can be matched into the clamping groove in the up-down direction, and the limit blocks protruding on both sides of the notch of the clamping groove and the inner concave in the middle of the clamping part can be used to limit the tension spring from directly falling out of the notch, so that the tension spring can be quickly positioned, and the force on the end of the tension spring during the rotation of the swing arm can be enhanced, so as to better prevent the failure of the tension spring.

As a further improvement of the above technical solution, the rear end of the swing rod is rotatably connected to a guide wheel, and the guide wheel protrudes backward from the rear end of the swing rod. When the swing rod contacts the external door frame or door leaf, the guide wheel will abut against the external door frame or door leaf, and the rotation of the guide wheel can reduce the friction between the door frame and the door leaf, thereby improving the user experience.

As a further improvement of the above technical solution, the housing includes a top cover and a bottom cover connected to the bottom side of the top cover, a cavity with an opening facing backward is formed between the top cover and the bottom cover, one end of the swing rod is rotatably connected between the top cover and the bottom cover, a slide groove and a clamping groove are provided on the top cover and the bottom cover, and the upper and lower ends of the positioning column are both located in the slide groove or the clamping groove. During installation, the swing rod and the positioning column and other structures can be conveniently installed on the top cover or the bottom cover first, and then the top cover and the bottom cover are combined and connected to each other, so as to achieve overall rapid assembly, and both ends of the swing rod are rotatably connected with the top cover and the bottom cover, and the top cover and the bottom cover also have slide grooves and clamping grooves for limiting the positioning column, which can further improve the stability of the swing rod and the positioning column when they are active.

A finger-pinch-proof door and window comprises a casement window frame, a casement window sash and the above-mentioned finger-pinch-proof device, wherein the casement window sash is hinged in the casement window frame, the outer shell is connected in the casement window frame, and the rear end of the swing rod abuts against the indoor side of the casement window sash.

This technical solution has at least the following beneficial effects: for a casement window, when the casement window sash needs to be closed, the casement window sash is rotated to be close to the casement window frame. When the casement window sash is against the rocker rod, the above-mentioned braking or deceleration effect on the rotation of the casement window sash can be achieved, thereby realizing the function of preventing hand pinching in the casement window.

A finger-pinch-proof door and window comprises a sliding window frame, a sliding window sash and the above-mentioned finger-pinch-proof device, wherein the sliding window sash is slidably connected to the sliding window frame, the outer shell is connected to one side of the sliding window sash, and the swing rod can abut against one side of the sliding window frame.

This technical solution has at least the following beneficial effects: for a sliding window, when the sliding window sash needs to be closed, the sliding window sash is pushed to one side of the sliding window frame. When the rocker arm on the sliding window sash abuts against the sliding window frame, the above-mentioned sliding braking or deceleration effect on the sliding of the sliding window sash can be achieved, thereby realizing the function of preventing fingers from being pinched in the sliding window.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief description of the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present application, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

FIG1 is a schematic diagram of the explosion structure of the anti-pinch device of the present application;

FIG2 is a schematic diagram of the assembly structure of the anti-pinch device of the present application after removing the top cover and the top plate;

FIG3 is a schematic diagram of the structure of the anti-pinch device of the present application after assembly;

FIG4 is a schematic structural diagram of a first embodiment of an anti-pinch door and window of the present application;

FIG. 5 is a schematic structural diagram of a second embodiment of the anti-pinch door and window of the present application.

In the accompanying drawings: 110-top cover, 111-slide groove, 112-card slot, 120-bottom cover, 200-swing rod, 210-top plate, 220-bottom plate, 230-connecting frame, 240-guide wheel, 300-connecting rod, 310-positioning column, 410-tension spring, 411-card connecting part, 420-spring, 421-pressing section, 422-transition section, 423-connecting section, 424-arc groove, 425-positioning pin, 430-card block, 431-card connecting groove, 510-casement window frame, 520-casement window sash, 610-sliding window frame, 620-sliding window sash.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

Referring to Fig. 1, Fig. 2 and Fig. 3, a hand pinch prevention device includes a housing, a swing rod 200 and an elastic component, wherein the housing is provided with a slide groove 111 and a clamping groove 112, and there is a certain inclination angle between the slide groove 111 and the clamping groove 112, for example, the slide groove 111 extends in the left-right direction, the clamping groove 112 extends in the front-back direction, the clamping groove 112 is connected to the left end of the slide groove 111, one end of the swing rod 200 is rotatably connected to the housing, and the other end of the swing rod 200 protrudes backward from the housing, and the rotation axes at both ends of the swing rod 200 extend in the up-down direction. A connecting rod 300 is rotatably connected to 200, and the end of the connecting rod 300 can rotate along the rotation axis extending in the up-down direction in the middle of the rocker arm 200. A positioning column 310 is connected to the connecting rod 300, and the positioning column 310 extends in the up-down direction. The end of the positioning column 310 extends into the slide groove 111 and the card groove 112. When the rocker arm 200 rotates, the rocker arm 200 can drive the positioning column 310 to move in the slide groove 111 and the card groove 112 through the connecting rod 300, and the elastic component has a tendency to make the positioning column 310 move to the left end of the slide groove 111.

As can be seen from the above, the housing is installed on the external door leaf or door frame. When the door and window are closed with great force, the part of the swing rod 200 protruding from the housing is against the door frame or door leaf, and the swing rod 200 transmits a large external force to the positioning column 310 through the connecting rod 300, so that the positioning column 310 overcomes the elastic force of the elastic component and slides directly into the slot 112. Since the slot 112 restricts the movement of the positioning column 310, the swing rod 200 cannot continue to rotate at this time, thereby preventing the door and window from continuing to close. At this time, the problem of personal injury caused by excessive force when closing the door and window can be prevented. After the external force on the door and window is removed, the elastic force of the elastic component causes the positioning column 310 to return from the slot 112 to the slide slot 111. When the force applied to close the door and window is small, the swing rod 200 The external force transmitted to the positioning column 310 through the connecting rod 300 is relatively small, and is not enough to make the positioning column 310 overcome the elastic force of the elastic component and enter the slot 112. At this time, the positioning column 310 moves to the right in the slide slot 111, and the swing arm 200 can continue to rotate so as not to interfere with the closing of the door and window, and the positioning column 310 needs to overcome the elastic force of the elastic component during the rightward movement. At this time, the speed of closing the door and window can be reduced, thereby effectively reducing the damage caused by pinching the finger. When the door and window are opened, the elastic force of the elastic component will make the positioning column 310 return to the left end of the slide slot 111, so as to be used for the next time the door and window are closed. This can effectively prevent the finger from being pinched, and is also applicable to the case where the door leaf is heavier or the door and window closes faster, and is more practical.

When the positioning column 310 is located at the left end of the slide slot 111, it has two movable paths, moving forward into the slot 112 to brake the swing of the swing rod 200 or moving to the right to slow down the swing of the swing rod 200. At this time, the elastic component has a tendency to make the positioning column 310 move to the left end of the slide slot 111. The size of the external force transmitted to the positioning column 310 is compared with the size of the elastic force of the elastic component on the positioning column 310 to determine the movement of the positioning column 310. When the external force acts on the swing rod 200, the swing rod 200 drives the positioning column 310 to move forward into the slot 112 for braking or slide to the right in the slide slot 111 for deceleration through the connecting rod 300. When the external force is removed, the positioning column 310 needs to be reset. In summary, the elastic component needs to have this function, and its structural forms also have various forms. For example, directly using the spring to apply an elastic force to the left and rear of the positioning column 310 can make the positioning column 310 always movable. To the left end of the slide groove 111, and in the present embodiment, the elastic component includes a tension spring 410 and a spring sheet 420, the tension spring 410 is connected between the housing and the rocker arm 200, the tension spring 410 has the tendency to rotate the rocker arm 200 backward to protrude from the housing, the spring sheet 420 is connected to the housing, the spring sheet 420 abuts against the positioning column 310 and has the tendency to press the positioning column 310 backward into the slide groove 111.

In the elastic component of the present embodiment, when the swing rod 200 is against the external door frame or door leaf, the swing rod 200 rotates and stretches the tension spring 410. When the door and window are closed with great force, the external force transmitted from the swing rod 200 to the positioning column 310 through the connecting rod 300 directly overcomes the elastic force of the spring sheet 420 and enters the slot 112, thereby limiting the continued rotation of the swing rod 200. When the door and window are closed with less force, the external force transmitted from the swing rod 200 to the positioning column 310 through the connecting rod 300 is less than the elastic force of the spring sheet 420. 20 exerts backward pressure on the positioning column 310. As the swing rod 200 continues to rotate, the positioning column 310 moves to the right in the slide groove 111, so as not to interfere with the closing of the door and window. The tension spring 410 always provides a backward pulling force to the swing rod 200, which can achieve the deceleration buffer when the door and window are closed and the swing rod 200 swings backward to reset. In this way, the tension spring 410 and the spring sheet 420 provide elastic forces from different directions, so that the positioning column 310 can move stably in the slot 112 and the slide groove 111.

In the above embodiment, the spring piece 420 can be a whole sheet structure, one end of the spring piece 420 is connected to the shell, and the other end is pressed against the positioning column 310 to provide backward pressure on the positioning column 310. In order to improve the service life of the spring piece 420 and prevent the spring piece 420 from being unable to produce elastic deformation, in this embodiment, the spring piece 420 includes a pressing section 421, a transition section 422 and a connecting section 423. The middle part of the connecting section 423 is arched forward to form an arc groove 424. A positioning pin 425 is inserted in the arc groove 424. The positioning pin 425 is connected to the shell. The connecting section 4 The left side of 23 extends forward and tilts against the shell, the transition section 422 is connected to the right side of the connecting section 423 and extends backward, the pressing section 421 is connected to the rear side of the transition section 422 and extends to the left, and the pressing section 421 presses against the positioning column 310. In actual application, the two ends of the positioning pin 425 are connected to the inner top wall and the inner bottom wall of the shell through the hole-shaft fit, so that the positioning pin 425 is positioned and connected in the shell, and a straight section extending to the left is also connected to the left side of the pressing section 421, and the straight section is tightly attached to the inner wall of the shell to increase the contact area with the inner side of the shell. The positioning pin 425 is located between the pressing section 421 and the connecting section 423, and is cooperated and connected in the arc-shaped groove 424 arched by the connecting section 423. When the external force transmitted to the positioning column 310 by the connecting rod 300 presses the pressing section 421 backward, the entire spring piece 420 can rotate around the positioning pin 425, and the connecting section 423 against the shell can produce elastic deformation, and the pressing section 421 against the positioning column 310 can also produce elastic deformation. When the pressure of the positioning column 310 is greater than the backward elastic force of the entire spring piece 420 on the positioning column 310, the positioning column 310 enters the slot 112. When the external force on the positioning column 310 is removed, the elastic force of the connecting section 423 and the pressing section 421 will push the positioning column 310 backward out of the slot 112, thereby causing the positioning column 310 to return to the left end of the slide slot 111.

In the above embodiment, due to the rotation of the swing rod 200, if the two ends of the tension spring 410 are directly fixed to the housing and the swing rod 200, the tension spring 410 will not only deform in the length direction of the tension spring 410, but also be subjected to torsion at the end. After long-term use, the tension spring 410 is prone to failure. Therefore, in this embodiment, a clamping block 430 is rotatably connected in the housing and on the swing rod 200. A clamping groove 431 is provided on the two clamping blocks 430 on the sides facing each other. A clamping portion 411 is provided at both ends of the tension spring 410. The two clamping portions 411 are respectively connected to the two clamping grooves 431. The tension spring 410 is connected to the two clamping blocks 430 through the clamping portions 411 at both ends. Both clamping blocks 430 can rotate. When in use, as the swing rod 200 rotates, the two clamping blocks 430 can also be driven to rotate. In this way, the tension spring 410 can be stretched in a straight line direction, not easily deformed and damaged, and better prevent the tension spring 410 from failure.

The swing rod 200 can be a rod-shaped structure. In this case, the tension spring 410 and the connecting rod 300 are both connected to one side of the swing rod 200. Since the swing rod 200 protrudes from the outer shell, the structure in which the tension spring 410 and the connecting rod 300 are connected to the swing rod 200 will be exposed. Therefore, in this embodiment, the swing rod 200 includes a top plate 210, a bottom plate 220 and a connecting frame 230. One end of the top plate 210 is rotatably connected to the inner top side of the outer shell, and one end of the bottom plate 220 is rotatably connected to the inner bottom side of the outer shell. The ends of the top plate 210 and the bottom plate 220 connected to the outer shell rotate along a rotation axis extending in the up-down direction. In actual applications, a rotation axis can be passed between the inner top side and the inner bottom side of the outer shell. Insert the sliding sleeve, and the ends of the top plate 210 and the bottom plate 220 are rotatably connected to the sliding sleeve, the connecting frame 230 is connected between the top plate 210 and the bottom plate 220, and the upper and lower sides of the connecting frame 230 are provided with bosses, and corresponding connecting holes are also provided on the top plate 210 and the bottom plate 220. The bosses cooperate with the hole axes of the connecting holes to achieve mutual connection between the connecting frame 230 and the top plate 210 and the bottom plate 220. One end of the clamping block 430 and the connecting rod 300 are rotatably connected between the top plate 210 and the bottom plate 220. Similarly, the rotation axes of the clamping block 430 and the connecting rod 300 between the top plate 210 and the bottom plate 220 extend in the up and down directions. The top plate 210 and the bottom plate 220 are rotatably connected to the inner top side and the inner bottom side of the shell respectively. The swing rod 200 is placed in the shell to reduce the exposure of the structure and make the overall structure more compact. At this time, the rear end of the swing rod 200 protrudes backward from the shell. When rotating, the swing rod 200 can be directly rotated forward and stored in the shell. The connecting frame 230 separates and connects the top plate 210 and the bottom plate 220. Since the block 430 is rotatably connected between the top plate 210 and the bottom plate 220, At this time, one end of the tension spring 410 also extends between the top plate 210 and the bottom plate 220, and the top plate 210 and the bottom plate 220 are used to limit the tension spring 410 up and down, and improve the stability of the tension spring 410 when applying force to the swing rod 200. Similarly, one end of the connecting rod 300 is also rotatably connected between the top plate 210 and the bottom plate 220, and the top plate 210 and the bottom plate 220 can be used to limit the connecting rod 300 up and down, and improve the stability when external force is transmitted to the connecting rod 300.

In the above embodiment, the tension spring 410 can be quickly connected to the clamping groove 431 through the clamping portion 411, such as clamping the clamping portion 411 into the clamping groove 431 from the notch of the clamping groove 431. In order to further improve the assembly efficiency of the two, in this embodiment, the clamping groove 431 passes through the clamping block 430 in the up-down direction, and the clamping portion 411 enters the clamping groove 431 in the up-down direction. The outer diameter of the clamping portion 411 gradually decreases from both ends to the middle, and both sides of the notch of the clamping groove 431 have limit blocks protruding toward the middle of the clamping portion 411. When installing the tension spring 410 to the clamping block 430, the clamping portion 411 of the tension spring 410 can be matched into the clamping groove 431 in the up-down direction, and the limit blocks protruding on both sides of the notch of the clamping groove 431 and the clamping block can be used to assemble the tension spring 410. The concave fit in the middle of the connecting portion 411 can limit the tension spring 410 from directly escaping from the notch, thereby achieving rapid positioning of the tension spring 410 and enhancing the force on the end of the tension spring 410 during the rotation of the swing rod 200, thereby better preventing the tension spring 410 from failing.

In order to improve the smoothness of closing the door and window, in this embodiment, the rear end of the swing rod 200 is rotatably connected to a guide wheel 240, the rotation axis of the guide wheel 240 extends in the up-down direction, and the guide wheel 240 protrudes backward from the rear end of the swing rod 200. When the swing rod 200 contacts the external door frame or door leaf, the guide wheel 240 will abut against the external door frame or door leaf, and the rotation of the guide wheel 240 can reduce the friction between the door frame and the door leaf, thereby improving the user experience.

The swing rod 200, the connecting rod 300 and other structures can be directly connected to the outside of the shell. In this case, the entire movable structure will be exposed. In order to protect the movable structure, the swing rod 200, the connecting rod 300 and other structures can be placed in the shell. The shell can be an integrally formed structure. In order to facilitate the assembly of the swing rod 200 and the connecting rod 300, etc., it can also be designed as a split structure. Specifically, the shell includes a top cover 110 and a bottom cover 120 connected to the bottom side of the top cover 110. The top cover 110 and the bottom cover 120 are detachably connected. For example, a downwardly extending block 430 is provided on the top cover 110, and a hole position that matches the shape of the block 430 is provided on the bottom cover 120. Through the mutual cooperation of the block 430 and the hole position, the top cover 110 and the bottom cover 120 can be quickly connected. In actual applications, there are multiple blocks 430 and holes, so that the top cover 110 and the bottom cover 120 are connected at multiple points through the blocks 430 and the holes. A cavity with an opening facing backward is formed between the top cover 110 and the bottom cover 120. One end of the swing rod 200 is rotatably connected between the top cover 110 and the bottom cover 120. A slide groove 111 and a slot 112 are provided on the top cover 110 and the bottom cover 120. The upper and lower ends of the positioning column 310 are both located in the slide groove 111 or the slot 112. During installation, the swing rod 200, the positioning column 310 and other structures can be conveniently installed on the top cover 110 or the bottom cover 120 first, and then the top cover 110 and the bottom cover 120 are combined and connected to each other, so as to achieve overall quick assembly. Both ends of the swing rod 200 are rotatably connected to the top cover 110 and the bottom cover 120. The top cover 110 and the bottom cover 120 also have a slide groove 111 and a card groove 112 on the top cover 110 and the bottom cover 120 for movable limiting of the positioning column 310, which can further improve the stability of the swing rod 200 and the positioning column 310 during movement.

The bottom cover 120 may also be provided with connecting ears for connecting and fixing to an external structure. The connecting ears may be a right-angle structure, and holes for driving screws are provided on the connecting ears, so that the whole can be conveniently installed and fixed to the external structure.

The above-mentioned anti-pinch device can be applied to various types of doors and windows, such as casement windows, sliding windows, lifting windows, folding windows and hanging windows, so as to form anti-pinch doors and windows with anti-pinch functions. As shown in Figure 4, as an embodiment of the anti-pinch door and window, it includes a casement window frame 510, a casement window sash 520 and the above-mentioned anti-pinch device, the casement window sash 520 is hinged in the casement window frame 510, the outer shell is connected to the casement window frame 510, and the rear end of the swing rod 200 is against the indoor side of the casement window sash 520.

For the casement window, when the casement window sash 520 needs to be closed, the casement window sash 520 is rotated to be close to the casement window frame 510. When the casement window sash 520 abuts against the swing rod 200, the above-mentioned braking or deceleration effect on the rotation of the casement window sash 520 can be achieved. In the above, the anti-pinch device is installed on the casement window frame 510, and the swing rod 200 is against the casement window sash 520 to brake or slow down. In actual application, the anti-pinch device can also be installed on the casement window sash 520, and the swing rod 200 is against the casement window frame 510 to brake or slow down.

As shown in Figure 5, as a second embodiment of the anti-pinch door and window, it includes a sliding window frame 610, a sliding window sash 620 and the above-mentioned anti-pinch device, the sliding window sash 620 is slidably connected to the sliding window frame 610, the outer shell is connected to one side of the sliding window sash 620, and the swing rod 200 can be against one side of the sliding window frame 610.

For a sliding window, when the sliding window sash 620 needs to be closed, the sliding window sash 620 is pushed toward one side of the sliding window frame 610. When the swing rod 200 on the sliding window sash 620 abuts against the sliding window frame 610, the above-mentioned braking or deceleration effect on the sliding of the sliding window sash 620 can be achieved, thereby realizing the function of preventing hand pinching in the sliding window. In the above, the hand pinching prevention device is installed on the sliding window sash 620, and the swing rod 200 abuts against the sliding window frame 610 for braking or deceleration. In actual application, the hand pinching prevention device can also be installed on the sliding window frame 610, and the swing rod 200 abuts against the sliding window frame 610 for braking or deceleration.

The preferred implementation methods of the present application are described in detail above, but the invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present application, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims (10)

A finger-pinch prevention device, characterized in that it comprises: The housing is provided with a slide groove (111) extending in the left-right direction, and the left end of the slide groove (111) is connected to a clamping groove (112) extending forward; A swing rod (200), one end of which is rotatably connected to the housing, and the other end of the swing rod (200) protrudes backward from the housing. The swing rod (200) is rotatably connected to a connecting rod (300), and the connecting rod (300) is connected to a positioning column (310), and the positioning column (310) can move in the sliding groove (111) and the clamping groove (112); The elastic component has a tendency to make the positioning column (310) move to the left end of the sliding groove (111). An anti-pinch device according to claim 1 is characterized in that: the elastic component includes a tension spring (410) and a spring sheet (420), the tension spring (410) is connected between the housing and the swing rod (200), the tension spring (410) has a tendency to rotate the swing rod (200) backward to protrude from the housing, the spring sheet (420) is connected to the housing, the spring sheet (420) abuts against the positioning column (310) and has a tendency to press the positioning column (310) backward into the slide groove (111). An anti-pinch device according to claim 2 is characterized in that: the spring piece (420) includes a pressing section (421), a transition section (422) and a connecting section (423), the middle part of the connecting section (423) arches forward and forms an arc groove (424), a positioning pin (425) is inserted in the arc groove (424), the positioning pin (425) is connected to the shell, the left side of the connecting section (423) extends forward obliquely and abuts against the shell, the transition section (422) is connected to the right side of the connecting section (423) and extends backward, the pressing section (421) is connected to the rear side of the transition section (422) and extends to the left, and the pressing section (421) abuts against the positioning column (310). The anti-pinch device according to claim 2 is characterized in that: a clamping block (430) is rotatably connected inside the shell and on the swing rod (200), a clamping groove (431) is provided on the two sides of the two clamping blocks (430) that are directly opposite to each other, and a clamping part (411) is provided at both ends of the tension spring (410), and the two clamping parts (411) are respectively matched and connected in the two clamping grooves (431). An anti-pinch device according to claim 4, characterized in that: the swing arm (200) includes a top plate (210), a bottom plate (220) and a connecting frame (230), one end of the top plate (210) is rotatably connected to the inner top side of the outer shell, one end of the bottom plate (220) is rotatably connected to the inner bottom side of the outer shell, the connecting frame (230) is connected between the top plate (210) and the bottom plate (220), and one end of the block (430) and the connecting rod (300) are both rotatably connected between the top plate (210) and the bottom plate (220). The anti-pinch device according to claim 4 is characterized in that: the clamping groove (431) penetrates the clamping block (430) in the up-down direction, the clamping portion (411) enters the clamping groove (431) in the up-down direction, and the clamping portion (411) The outer diameter of the connection portion (411) gradually decreases from both ends to the middle, and both sides of the slot opening of the clamping slot (431) are provided with limit blocks protruding toward the middle of the clamping portion (411). The anti-pinch device according to claim 1 is characterized in that: the rear end of the swing rod (200) is rotatably connected to a guide wheel (240), and the guide wheel (240) protrudes backward from the rear end of the swing rod (200). An anti-pinch device according to claim 1, characterized in that: the shell includes a top cover (110) and a bottom cover (120) connected to the bottom side of the top cover (110), a cavity with an opening facing backward is formed between the top cover (110) and the bottom cover (120), one end of the swing rod (200) is rotatably connected between the top cover (110) and the bottom cover (120), a slide groove (111) and a clamping groove (112) are provided on the top cover (110) and the bottom cover (120), and the upper and lower ends of the positioning column (310) are both located in the slide groove (111) or the clamping groove (112). A finger-pinch prevention door and window, characterized in that it comprises a casement window frame (510), a casement window sash (520) and an finger-pinch prevention device according to any one of claims 1 to 8, wherein the casement window sash (520) is hinged in the casement window frame (510), the outer shell is connected in the casement window frame (510), and the rear end of the swing rod (200) abuts against the indoor side of the casement window sash (520). A finger-pinch proof door and window, characterized in that it comprises a sliding window frame (610), a sliding window sash (620) and an finger-pinch proof device according to any one of claims 1 to 8, wherein the sliding window sash (620) is slidably connected to the sliding window frame (610), the outer shell is connected to one side of the sliding window sash (620), and the swing rod (200) can be against one side of the sliding window frame (610).