An anti-pinch device

Abstract

The present invention discloses an anti-pinch device, comprising: a mounting plate fixedly connected to one side plate surface of the plate body; an airbag, one end of the airbag is provided with an air release hole, and the other end is closed. The end of the airbag provided with the air release hole is fixedly connected to the mounting plate, and the end of the airbag away from the air release hole can abut against the outer wall of the frame body. The minimum inner diameter value of the airbag is 3-8 times the aperture value of the air release hole. In the present invention, the airbag is fixed to the plate body through the mounting plate, and one end of the airbag is provided with an air release hole much smaller than the minimum inner diameter of the airbag. When the plate body is rotated, the end of the airbag away from the air release hole will abut against the outer wall of the frame body, and the airbag is compressed and deformed. When the airbag is slowly compressed, that is, when the plate body is slowly rotated, the airbag can be slowly and smoothly compressed; when a person's or an animal's limb is placed on the frame body or contacts the plate body, if the plate body is rotated quickly at this time, the airbag will not be quickly compressed and deformed, and the person's or animal's limb can have sufficient time to dodge, thereby achieving the anti-pinch effect.

Description

Technical Field

[0001] The present invention relates to the field of life protection articles, and more specifically to an anti-pinch device. Background Art

[0002] For children, doors and windows are somewhat dangerous. At the moment when a door or window closes, if the pushing force is too large, that is, if the door or window closes too quickly, a child's delicate limbs can easily be pinched by the door or window. To solve this problem, anti-pinch technologies have been invented.

[0003] The existing anti-pinch technologies mainly set induction anti-pinch hand devices on doors or windows. The above settings can prevent the phenomenon of pinching hands by doors or windows due to carelessness, inattentiveness, etc. when closing doors or windows. However, the above anti-pinch means need to be realized by using sensors or other relatively complex structures, and the cost of modification for users is very high, making it difficult to promote anti-pinch devices on the market.

[0004] Therefore, how to provide an anti-pinch device that can overcome the above problems is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an anti-pinch device.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An anti-pinch device is installed on a plate body that is hinged to a frame body and can latch the frame body, and includes:

[0008] A mounting plate, which is fixed to one side plate surface of the plate body;

[0009] An airbag, one end of the airbag is provided with an air leakage hole, and the other end is closed. The end of the airbag provided with the air leakage hole is fixed to the mounting plate. The end of the airbag away from the air leakage hole can abut against the outer wall of the frame body. The minimum inner diameter value of the airbag is 3 - 8 times the aperture value of the air leakage hole.

[0010] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses an anti-pinch device. In the present invention, the airbag is fixed to the plate body through the mounting plate. One end of the airbag is provided with an air leakage hole that is much smaller than the minimum inner diameter of the airbag. When the plate body is rotated, the end of the airbag away from the air leakage hole will abut against the outer wall of the frame body, and the airbag is compressed and deformed. When the airbag is slowly compressed, that is, when the plate body is slowly rotated, the airbag can be compressed slowly and smoothly; when a person's or an animal's limb is placed on the frame body or contacts the plate body, if the plate body is rotated quickly at this time, the airbag will not be quickly compressed and deformed, and the person's or animal's limb can have sufficient time to dodge, thereby achieving the anti-pinch effect.

[0011] Preferably, it further includes a double-sided film. A groove is formed on one side surface of the mounting plate. One adhesive surface of the double-sided film is adhesively fixed to the inner bottom wall of the groove, and the other adhesive surface of the double-sided film is adhesively fixed to one side surface of the plate body. The thickness of the double-sided film is greater than the depth of the groove. An installation groove for installing the airbag is recessed on the side surface of the mounting plate where the groove is formed. A through hole is formed on the surface of the mounting plate, and the through hole corresponds to the bottom wall of the installation groove in position. This setting ensures that the mounting plate can be reliably fixed to the plate body, and the airbag is convenient to be fixed to the mounting plate.

[0012] Preferably, it further includes an annular plate, an external threaded pipe, an internal threaded pipe, and a cover body. The external threaded pipe is coaxially fixed on one side surface of the annular plate. The internal threaded pipe is limited in the cover body. One end of the internal threaded pipe is fixed to the inner wall of the closed end of the cover body. The closed end of the cover body is provided with a ventilation hole, and the ventilation hole corresponds to and communicates with the internal threaded pipe. The airbag has a side wall with a serrated cross-section. The length of the airbag is greater than the depth of the installation groove. One end of the airbag provided with the air release hole is limited in the installation groove. The annular plate is limited in the airbag. The side surface of the annular plate fixed with the external threaded pipe abuts against the inner wall of the airbag. The external threaded pipe sequentially passes through the air release hole and the through hole and is screwed with the internal threaded pipe. The end wall of the open end of the cover body abuts against the surface of the mounting plate. The above setting ensures that the airbag can be reliably fixed on the mounting plate, and at the same time, components such as the mounting plate do not affect the air intake and exhaust of the airbag.

[0013] Preferably, it further includes a core body. The core body includes a frustum, a connecting rod, an arc-shaped plate, and a stopper. A frustum-shaped cover body and a limiting plate are integrally formed on the inner wall of the external threaded pipe. The frustum-shaped cover body is coaxially arranged with the external threaded pipe. The small-diameter end of the frustum-shaped cover body is arranged away from the annular plate. An installation hole is formed in the center of the end wall of the small-diameter end of the frustum-shaped cover body. A limiting plate is vertically fixed on the outer wall of the small-diameter end of the frustum-shaped cover body. The connecting rod is coaxially fixed to the small-diameter end of the frustum. A plurality of arc-shaped plates made of elastic materials are fixed to the large-diameter end of the frustum. The bending directions of the plurality of arc-shaped plates are the same, and the plurality of arc-shaped plates are evenly arranged along the circumference of the frustum. The arc-shaped plates are limited inside the frustum-shaped cover body. One end of the arc-shaped plate away from the frustum abuts against the inner wall of the small-diameter end of the frustum-shaped cover body. The outer side wall of the frustum can block the installation hole. The stopper is limited in the external threaded pipe. The connecting rod coaxially passes through the installation hole and is fixed to the stopper. One end wall of the stopper abuts against the end wall of the limiting plate away from the frustum-shaped cover body. Setting the core body can improve the anti-pinch effect of the device.

[0014] Preferably, three arc-shaped plates are provided, the cross-section of the limiting plate is arc-shaped and two of them are provided, and the connecting rod is arranged between the two limiting plates. This setting can further improve the anti-pinch effect of the device. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0016] Figure 1 is the overall axonometric view of an anti-pinch device in Embodiment 1 of the present application;

[0017] Figure 2 is the overall cross-sectional view of an anti-pinch device in Embodiment 1 of the present application;

[0018] Figure 3 is Figure 2 the partial enlarged view at A in

[0019] Figure 4 is the explosion schematic diagram of an anti-pinch device in Embodiment 1 of the present application;

[0020] Figure 5 is the partial axonometric Figure 1 ;

[0021] Figure 6 is the partial axonometric Figure 2 ;

[0022] Figure 7 is the partial axonometric Figure 3 ;

[0023] Figure 8 is the axonometric view of the airbag in Embodiment 1 of the present application;

[0024] Figure 9 is the schematic diagram of an anti-pinch device in Embodiment 1 of the present application installed on a plate body Figure 1 ;

[0025] Figure 10 is the schematic diagram of an anti-pinch device in Embodiment 1 of the present application installed on a plate body Figure 2 ;

[0026] Figure 11 is the overall axonometric view of an anti-pinch device in Embodiment 2 of the present application;

[0027] Figure 12 It is a schematic diagram of a pinch protection device installed on a plate body in the second embodiment of the present application.

[0028] In the figure:

[0029] 1 is a frame body, 2 is a plate body, 3 is a mounting plate, 30 is a groove, 31 is a mounting groove, 32 is a through hole, 4 is an airbag, 40 is an air vent hole, 5 is a double-sided adhesive film, 6 is an annular plate, 7 is an external threaded tube, 8 is an internal threaded tube, 9 is a cover body, 90 is a ventilation hole, 10 is a frustum, 11 is a connecting rod, 12 is an arc-shaped plate, 13 is a stop block, 14 is a frustum-shaped cover body, 140 is a mounting hole, and 15 is a limiting plate. Specific implementation manner

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] The present invention discloses a pinch protection device. The airbag 4 in the present invention is fixed to the plate body 2 through the mounting plate 3. One end of the airbag 4 is provided with an air vent hole 40 that is much smaller than the minimum inner diameter of the airbag 4. When the plate body 2 is rotated, the end of the airbag 4 away from the air vent hole 40 will abut against the outer wall of the frame body 1, and the airbag 4 will be compressed and deformed. When the airbag 4 is slowly compressed, that is, when the plate body 2 is slowly rotated, the airbag 4 can be slowly and smoothly compressed; when a person's or an animal's limb is placed on the frame body 1 or contacts the plate body 2, if the plate body 2 is rotated quickly at this time, the airbag 4 will not be quickly compressed and deformed, and the person's or animal's limb will have sufficient time to avoid, thereby achieving the pinch protection effect; the mounting plate 3 and the plate body 2 are fixed through the double-sided adhesive film 5, and this setting ensures that the mounting plate 3 can be reliably fixed on the plate body 2; by providing components such as the cover body 9, the annular plate 6, the external threaded tube 7, and the internal threaded tube 8, this setting ensures that the airbag 4 can be reliably fixed on the mounting plate 3; by providing a core body, this setting can further improve the pinch protection effect of the pinch protection device.

[0032] Embodiment 1

[0033] See the appendix Figures 1-10 It is a schematic diagram of the overall and partial structures of an embodiment of the present invention. The present invention specifically discloses a pinch protection device installed on a plate body 2 that is hinged to the frame body 1 and can latch the frame body 1. The frame body 1 in this embodiment is a door frame or a window frame. Correspondingly, the plate body 2 corresponds to a door panel or a window sash, and includes:

[0034] The mounting plate 3 is in the shape of an elongated strip. The mounting plate 3 is fixed to one side of the plate body 2. The plate surface of the mounting plate 3 is parallel to the plate surface of the plate body 2. The plate length direction of the mounting plate 3 is perpendicular to the hinge axis of the frame body 1 and the plate body 2. Moreover, the mounting plate 3 is arranged away from the hinge axis of the frame body 1 and the plate body 2.

[0035] The airbag 4 is made of elastic material, that is, the airbag 4 can return to its original shape after being compressed and deformed. A circular air leakage hole 40 is opened at one end of the airbag 4, and the other end is closed. The end of the airbag 4 with the air leakage hole 40 is fixed to the mounting plate 3, and the airbag 4 is arranged perpendicular to the mounting plate 3. The end of the airbag 4 away from the air leakage hole 40 can abut against the outer wall of the frame 1, and the minimum inner diameter of the airbag 4 is 3-8 times the aperture value of the air leakage hole 40;

[0036] When the plate 2 is rotated slowly, the closed end of the airbag 4 can abut against the outer wall of the frame 1, the airbag 4 is slowly compressed, the pressure difference of the gas inside and outside the airbag 4 is small, and the gas inside the airbag 4 is slowly discharged to the atmosphere through the vent hole 40;

[0037] When the plate body 2 is rotated rapidly, after the closed end of the airbag 4 abuts against the outer wall of the frame body 1, the airbag 4 is compressed rapidly, and the difference in gas pressure inside and outside the airbag 4 is large. However, since the aperture of the air leakage hole 40 is much smaller than the minimum inner diameter of the airbag 4, the compression of the airbag 4 is limited, that is, the airbag 4 will not be compressed and deformed rapidly, thereby preventing human limbs from being pinched by the plate body 2 due to the rapid rotation of the plate body 2.

[0038] A circular groove 30 is provided on one side surface of the mounting plate 3, one bonding surface of the circular double-sided tape 5 is bonded and fixed to the bottom wall of the groove 30, and the other bonding surface of the double-sided tape 5 is bonded and fixed to one side surface of the plate body 2. The thickness of the double-sided tape 5 is greater than the depth of the groove 30, so as to ensure that the double-sided tape 5 can be reliably bonded to the plate body 2; a mounting groove 31 for mounting the airbag 4 is recessed on the side surface of the mounting plate 3 where the groove 30 is provided, and a circular through hole 32 is provided on the surface of the mounting plate 3, and the through hole 32 corresponds to the position of the bottom wall of the mounting groove 31.

[0039] More specifically, it also includes an annular plate 6, an externally threaded tube 7, an internally threaded tube 8 and a cover body 9. An externally threaded tube 7 is coaxially integrally formed on one side of the annular plate 6. The externally threaded tube 7 has an outer diameter smaller than the diameters of the air leakage hole 40 and the through hole 32. The internally threaded tube 8 is limited in the cover body 9. One end of the internally threaded tube 8 is fixed to the inner wall of the closed end of the cover body 9. A circular air hole 90 is opened at the closed end of the cover body 9. The air hole 90 corresponds to and is connected to the internally threaded tube 8. When the airbag 4 is compressed, the gas inside the airbag 4 is discharged to the atmosphere through the air hole 90.

[0040] The airbag 4 has a side wall with a serrated cross-section, which facilitates the axial compression deformation of the airbag 4. The length of the airbag 4 is greater than the depth of the installation groove 31, enabling the airbag 4 to have sufficient compression deformation distance. One end of the airbag 4 provided with an air vent hole 40 is limited within the installation groove 31, and the annular plate 6 is limited within the airbag 4. One side plate surface of the annular plate 6 fixed with the external thread tube 7 is in close contact with the inner wall of the airbag 4, ensuring that the gas inside the airbag 4 will not leak from the connection between the airbag 4 and the installation groove 31. The external thread tube 7 passes through the air vent hole 40 and the through hole 32 in sequence and is screwed with the internal thread tube 8. The end wall of the opening end of the cover body 9 is in contact with the plate surface of the mounting plate 3. By providing the annular plate 6, the external thread tube 7, the internal thread tube 8, and the cover body 9, it is ensured that the airbag 4 and the mounting plate 3 can be reliably fixed without affecting the air intake and exhaust effects of the airbag 4.

[0041] More specifically, it further includes a core body, which includes a frustum 10, a connecting rod 11, an arc-shaped plate 12, and a stopper 13;

[0042] A frustum-shaped cover body 14 and a limiting plate 15 are integrally formed on the inner wall of the external thread tube 7. The frustum-shaped cover body 14 is coaxially arranged with the external thread tube 7. The small-diameter end of the frustum-shaped cover body 14 is arranged away from the annular plate 6. A circular mounting hole 140 is centrally opened on the end wall of the small-diameter end of the frustum-shaped cover body 14. The aperture of the mounting hole 140 is greater than the outer diameter of the connecting rod 11. A limiting plate 15 is perpendicularly arranged on the outer wall of the small-diameter end of the frustum-shaped cover body 14;

[0043] The inside of the frustum 10 is hollow and its large-diameter end is open. A connecting rod 11 with a circular cross-section is integrally formed coaxially at the small-diameter end of the frustum 10. Three arc-shaped plates 12 made of an elastic material are integrally formed at the large-diameter end of the frustum 10. The bending directions of the three arc-shaped plates 12 are the same, and the three arc-shaped plates 12 are evenly arranged along the circumference of the frustum 10;

[0044] The arc-shaped plate 12 is limited inside the frustum-shaped cover body 14. One end of the arc-shaped plate 12 away from the frustum 10 is in contact with the inner wall of the small-diameter end of the frustum-shaped cover body 14. When the connecting rod 11 moves axially, the arc-shaped plate 12 will undergo elastic deformation, and the outer wall of the frustum 10 can block the mounting hole 140. That is, when the airbag 4 is rapidly compressed, the arc-shaped plate 12 deforms rapidly, and the gas inside the airbag 4 will quickly push the frustum 10 tightly along the axial direction of the connecting rod 11. At this time, the outer wall of the frustum 10 will block the mounting hole 140; conversely, if the airbag 4 is slowly compressed, the gas inside the airbag 4 will not push the frustum 10 tightly, and the outer wall of the frustum 10 will not block the mounting hole 140; in addition, the above design of the core body will not hinder the air intake process when the compressed airbag 4 undergoes recovery deformation.

[0045] The stopper 13 is limited within the external threaded tube 7. The connecting rod 11 coaxially passes through the mounting hole 140 and is fixed to the stopper 13. One end wall of the stopper 13 abuts against one end wall of the limiting plate 15 away from the frustum-shaped cover 14. This setting can prevent the connecting rod 11 from falling into the airbag 4 and play a role in axially limiting the connecting rod 11.

[0046] In this embodiment, the cross-section of the limiting plate 15 is arc-shaped and there are two of them. The connecting rod 11 is arranged in the middle between the two limiting plates 15.

[0047] When a person's or an animal's limb is placed on the frame 1 or contacts the plate body 2, quickly rotate the plate body 2, that is, perform a quick door closing or window closing action. The airbag 4 will abut against the outer wall of the frame 1 and be quickly compressed. Since the aperture of the air vent hole 40 is much smaller than the minimum inner diameter of the airbag 4, the compression of the airbag 4 is limited, thereby realizing its anti-pinch function.

[0048] Embodiment Two

[0049] See the appendix Figures 11-12 It is a schematic diagram of the overall and partial structures of another embodiment of the present invention. The difference between Embodiment Two and Embodiment One lies in that: the mounting plate 3 is bent into an L shape, the length direction of the airbag 4 is parallel to the plate surface of the plate body 2, and the mounting plate 3 is arranged close to the hinge axis of the frame 1 and the plate body 2, that is, the abutting position of the closed end of the airbag 4 against the outer wall of the frame 1 is different; a circular groove 30 is formed on the outer plate surface of the mounting plate 3, and a mounting groove 31 for mounting the airbag 4 is recessed on the outer plate surface of the mounting plate 3. The groove depth direction of the groove 30 is perpendicular to the groove depth direction of the mounting groove 31.

[0050] As for other contents, Embodiment One and Embodiment Two are the same, and this embodiment will not be described repeatedly.

[0051] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-pinch device is installed on a plate body (2) that is hinged to a frame body (1) and can latch onto the frame body (1). It is characterized in that it includes a mounting plate (3), the mounting plate (3) is fixed to one side plate surface of the plate body (2), the plate surface of the mounting plate (3) is parallel to the plate surface of the plate body (2), the length direction of the mounting plate (3) is perpendicular to the hinge axis of the frame body (1) and the plate body (2), and the mounting plate (3) is arranged away from the hinge axis of the frame body (1) and the plate body (2); an airbag (4), one end of the airbag (4) is provided with an air leakage hole (40), the other end is closed, the end of the airbag (4) provided with the air leakage hole (40) is fixed to the mounting plate (3), the end of the airbag (4) away from the air leakage hole (40) can abut against the outer wall of the frame body (1), and the minimum inner diameter value of the airbag (4) is 3 - 8 times the pore diameter value of the air leakage hole (40); It further includes an annular plate (6), an external threaded pipe (7), an internal threaded pipe (8) and a cover body (9). The external threaded pipe (7) is coaxially fixed to one side plate surface of the annular plate (6), and the internal threaded pipe (8) is limited within the cover body (9); It further includes a core body, and the core body includes a frustum (10), a connecting rod (11), an arc-shaped plate (12) and a stopper (13); a frustum-shaped cover body (14) and a limiting plate (15) are integrally formed on the inner wall of the external threaded pipe (7). The frustum-shaped cover body (14) is coaxially arranged with the external threaded pipe (7). The small-diameter end of the frustum-shaped cover body (14) is arranged away from the annular plate (6). An installation hole (140) is centrally opened on the end wall of the small-diameter end of the frustum-shaped cover body (14). The outer wall of the small-diameter end of the frustum-shaped cover body (14) is perpendicularly fixed with the limiting plate (15); the connecting rod (11) is coaxially fixed to the small-diameter end of the frustum (10). A plurality of the arc-shaped plates (12) made of an elastic material are fixed to the large-diameter end of the frustum (10). The bending directions of the plurality of arc-shaped plates (12) are the same, and the plurality of arc-shaped plates (12) are evenly arranged along the circumference of the frustum (10); the arc-shaped plate (12) is limited inside the frustum-shaped cover body (14), and the end of the arc-shaped plate (12) away from the frustum (10) abuts against the inner wall of the small-diameter end of the frustum-shaped cover body (14). The outer side wall of the frustum (10) can block the installation hole (140); the stopper (13) is limited within the external threaded pipe (7), the connecting rod (11) coaxially passes through the installation hole (140) and is fixed to the stopper (13), and one end wall of the stopper (13) abuts against the end wall of the limiting plate (15) away from the frustum-shaped cover body (14).

2. An anti-pinch device according to claim 1, It is characterized in that It further includes a double-sided film (5). A groove (30) is formed on one side surface of the mounting plate (3). One adhesive surface of the double-sided film (5) is adhesively fixed to the inner bottom wall of the groove (30), and the other adhesive surface of the double-sided film (5) is adhesively fixed to one side surface of the plate body (2). The thickness of the double-sided film (5) is greater than the depth of the groove (30). An installation groove (31) for installing the airbag (4) is recessed on the side surface of the mounting plate (3) where the groove (30) is formed. A through hole (32) is formed on the surface of the mounting plate (3), and the through hole (32) corresponds to the bottom wall of the installation groove (31).

3. The anti-pinch device according to claim 2, characterized in that, One end of the internally threaded tube (8) is fixed to the inner wall of the closed end of the cover body (9). The closed end of the cover body (9) is provided with a ventilation hole (90), and the ventilation hole (90) corresponds to and communicates with the internally threaded tube (8). The airbag (4) has a side wall with a serrated cross-section. The length of the airbag (4) is greater than the depth of the installation groove (31). One end of the airbag (4) provided with the air release hole (40) is limited in the installation groove (31). The annular plate (6) is limited in the airbag (4). One side surface of the annular plate (6) fixed with the externally threaded tube (7) abuts against the inner wall of the airbag (4). The externally threaded tube (7) sequentially passes through the air release hole (40) and the through hole (32) and then is screwed with the internally threaded tube (8). The end wall of the open end of the cover body (9) abuts against the surface of the mounting plate (3).

4. The anti-pinch device according to claim 1, characterized in that, There are three arc-shaped plates (12). The cross-section of the limiting plate (15) is arc-shaped and there are two of them. The connecting rod (11) is arranged between the two limiting plates (15).

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