Anti-pinch device for a door

Abstract

This utility model provides an anti-pinch device for doors, belonging to the technical field of door and window components. It solves the problems of complex structure and high manufacturing cost of existing door anti-pinch devices. The anti-pinch device includes a base, a movable component, a backing, and a blocking hook. The base is used to install on the door panel; the movable component is connected to the base via a linear guide structure and a first elastic element; the backing is used to install on the door frame; the middle part of the blocking hook is rotatably connected to one end of the movable component via a shaft; the inner end of the blocking hook is the hook portion; the base has a hook groove matching the hook portion; the outer end of the blocking hook is the abutment portion, located outside the movable component; the hook portion is embedded in the hook groove to restrict the movable component from automatically extending; when the door is closed, the abutment portion of the blocking hook contacts the backing and causes the blocking hook to swing, disengaging the hook portion from the hook groove; when the door is reopened, it automatically pops out under the action of the first elastic element. This door anti-pinch device has the advantages of simple structure and low manufacturing cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of door and window components, and in particular relates to an anti-pinch device for doors. Background Technology

[0002] In real life, it is common for doors to close accidentally due to wind, and for children or pets to get their fingers pinched when turning doors. To reduce these incidents, various technical solutions have been proposed. For example, a Chinese patent document describes an anti-pinch mechanism and door assembly (application number 202020333362.3), which includes a base, a movable component, a drive component, and a blocking component. The anti-pinch mechanism is located on the door panel. When the door panel needs to be closed with the door frame, the damping part of the drive component slows down the movement of the movable component towards the usage position, allowing the door panel to close quickly. Alternatively, the blocking component can engage with a groove to prevent the movable component from moving towards the usage position. After the door panel and door frame are closed, the door frame restricts the movement of the movable component and keeps it in a pressed position. When the door panel is turned to open, the drive component causes the movable component to move towards the usage position, thus preventing the door panel from closing with the door frame.

[0003] While the aforementioned anti-pinch mechanism achieves the required function, it also has some shortcomings: 1. The driving components, including springs, dampers, gears, racks, and other parts, suffer from high manufacturing costs and insufficient performance stability; 2. The moving parts come into contact with the door frame, and after repeated opening and closing of the door, the moving parts damage the paint on the door frame, thus affecting the door's aesthetics. Summary of the Invention

[0004] This utility model proposes an anti-pinch device for doors. The technical problem to be solved by this utility model is how to develop another type of anti-pinch device for doors, preferably one that can reduce manufacturing costs and improve stability in use.

[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution: A door anti-pinch device, comprising a base and a movable part; the base is used to install on the door panel; the movable part is connected to the base through a linear guide structure and a first elastic member; after the movable part extends and moves relative to the base along the guide direction of the linear guide structure, it can block the closing of the door panel and the door frame; after the movable part retracts and moves relative to the base along the guide direction of the linear guide structure, it can release the blocking of the closing of the door panel and the door frame; the first elastic member gives the movable part an automatic extension tendency relative to the base; the door anti-pinch device also... It includes a backrest and a blocking hook; the backrest is used to install on the door frame; the middle part of the blocking hook is rotatably connected to one end of the movable part via a shaft, the inner end of the blocking hook is the hook part, the base has a hook groove that matches the hook part, and the outer end of the blocking hook is the abutment part, which is located on the outside of the movable part; when the door is in the open state and the movable part is in the retracted state relative to the base, the hook part can be inserted into the hook groove to limit the movable part from automatically extending relative to the base; when the door changes from the open state to the closed state, the abutment part of the blocking hook contacts the backrest and causes the blocking hook to swing, and the hook part disengages from the hook groove.

[0006] Compared with existing technologies, the anti-pinch device of this door can automatically extend by using a swing hook type blocking component and setting matching grooves and backing, without the need for dampers, gear racks and other components. This not only reduces manufacturing costs, but also avoids the instability factors that exist in the operation of dampers and gear racks. At the same time, the blocking swing hook in the anti-pinch device of this door swings around the axis, which has the advantages of flexible and stable movement.

[0007] The anti-pinch hook can be installed at the rear end of the moving part, that is, the end away from the door frame; or it can be installed at the front end of the moving part, that is, the end that can be embedded between the door panel and the door frame. When the anti-pinch hook is installed at the front end of the moving part, it not only improves the flexibility of the anti-pinch device installation position, but also reduces the possibility of direct contact between the front surface of the moving part or the anti-pinch hook and the door frame, or even avoids contact altogether, thus effectively protecting the door frame.

[0008] In the aforementioned door anti-pinch device, the blocking hook is installed on the front end of the movable part. When the door changes from the open state to the closed state, under the action of the first elastic element, the movable part automatically extends forward horizontally by 1-2mm relative to the base. The hook part is misaligned with the hook groove, and the front end face of the movable part contacts the backing wall. The backing wall prevents the blocking hook from directly contacting the door frame.

[0009] In the aforementioned door anti-pinch device, the linear guide structure includes guide wings located on both sides of the base and guide grooves located on both sides of the movable part, with the two guide wings embedded in the two guide grooves in a one-to-one correspondence. The and / or linear guide structure includes a guide groove formed on the bottom wall of the movable part, a T-shaped guide slider embedded in the guide groove, the T-shaped guide slider being fixedly connected to the base and the base contacting the bottom surface of the movable part.

[0010] In the aforementioned door anti-pinch device, the blocking hook and the movable part are also connected by a second elastic element. The second elastic element can make the blocking hook swing back to its original position, that is, it can make the hook part of the blocking hook maintain the tendency to move in the state of being embedded in the hook groove.

[0011] In the aforementioned door anti-pinch device, the movable part has a cavity inside, and an auxiliary guide block and auxiliary guide plates located on both sides of the auxiliary guide block are provided inside the movable part. The auxiliary guide block is fixedly connected to the base, and the auxiliary guide plates are fixedly connected to the movable part; a linear guide structure is formed between the auxiliary guide block and the auxiliary guide plates.

[0012] In the aforementioned door anti-pinch device, the door anti-pinch device further includes a knob, the knob including a turning part and a connecting cap part, the connecting cap part being located inside the movable part, the connecting cap part being rotatably connected to the movable part, and the turning part extending out of the movable part; the connecting cap part having a first blocking surface and a notch having a notch to ensure the movement space of the auxiliary guide block; one end face of the auxiliary guide block contacting the first blocking surface can prevent the movable part from extending and moving relative to the base.

[0013] In the aforementioned door anti-pinch device, the connecting cap also has a second blocking surface, and the other end face of the auxiliary guide block contacts the second blocking surface to prevent the moving part from retracting relative to the base.

[0014] In the aforementioned door anti-pinch device, the door anti-pinch device further includes an installation auxiliary block. The installation auxiliary block has a positioning groove for the movable part to be embedded in. When the movable part is embedded in the positioning groove, a positioning connection is formed between the installation auxiliary block and the movable part. The installation auxiliary block also has a first positioning side that can contact the door panel and a second positioning side that can contact the door frame. The first positioning side and the second positioning side are arranged perpendicularly.

[0015] In the aforementioned door anti-pinch device, the mounting auxiliary block also has a third positioning side for backing contact, and the first positioning side and the third positioning side are arranged in parallel.

[0016] In the aforementioned door anti-pinch device, an adhesive is provided on the first positioning side. Attached Figure Description

[0017] Figure 1 and Figure 2 These are three-dimensional structural diagrams of the anti-pinch device from different perspectives.

[0018] Figure 3 This is an exploded view of the anti-pinch device.

[0019] Figure 4 This is a diagram showing the three-dimensional structure of the knob.

[0020] Figure 5 This is a three-dimensional structural diagram of the installation auxiliary block.

[0021] Figure 6 This is a front view structural diagram of the anti-pinch device in its initial installation state on the door.

[0022] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0023] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of BB.

[0024] Figure 9 This is a cross-sectional structural diagram showing the final state of the anti-pinch device installed on the door.

[0025] Figure 10 This is a cross-sectional view of the anti-pinch device when the door panel and door frame are in a closed state.

[0026] Figure 11 This is a cross-sectional structural diagram showing the anti-pinch device in the blocking state where the door panel and door frame are closed.

[0027] In the diagram, 100 is the door panel; 200 is the door frame; 300 is the anti-pinch device; 10 is the base; 11 is the guide wing; 12 is the guide wing; 13 is the connecting part; 14 is the T-shaped guide slider; 20 is the moving part; 21 is the first guide groove; 22 is the second guide groove; 23 is the tube segment; 24 is the bottom plate; 25 is the top cover; 30 is the backing; 40 is the blocking hook; 41 is the hook; 42 is the abutment; 50 is the abutment; 51 is the screwing part; 52 is the connecting cap; 53 is the first blocking surface; 54 is the second blocking surface; 55 is the notch; 60 is the mounting auxiliary block; 61 is the positioning groove; 62 is the first positioning side; 63 is the second positioning side; 64 is the third positioning side; 1 is the first double-sided adhesive; 2 is the first elastic element; 3 is the shaft; 4 is the second elastic element; 5 is the second double-sided adhesive; 6 is the auxiliary guide block; 7 is the auxiliary guide plate. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Example 1: As Figures 1 to 11 As shown, the door includes a door panel 100 and a door frame 200. The door anti-pinch device 300 is used to prevent the door panel 100 and the door frame 200 from closing. The door anti-pinch device 300 includes a base 10, a movable part 20, a backrest 30, and a blocking hook 40.

[0034] The base 10 is used to install on the door panel 100. The accompanying drawings show that the base 10 is attached to one side of the door panel 100 using the first double-sided adhesive 1. Depending on the actual situation, the base 10 can also be installed on one side of the door panel 100 using screws.

[0035] like Figure 3 and Figure 8 As shown, the movable component 20 is a strip-shaped block with an internal cavity. The movable component 20 is used to embed between the door panel 100 and the door frame 200 to prevent the door panel 100 and the door frame 200 from closing. The movable component 20 also includes a base plate 24 and an upper cover 25 fixedly connected to the base plate 24. The upper cover 25 has a recessed cavity. The cavity is formed when the base plate 24 and the upper cover 25 are fastened together.

[0036] For ease of description, the end of the movable member 20 that can be embedded between the door panel 100 and the door frame 200 is called the front end, and the other end is called the rear end. The movable member 20 is connected to the base 10 through a linear guide structure and the first elastic member 2. When the movable member 20 extends forward relative to the base 10 along the guide direction of the linear guide structure, it can prevent the door panel 100 and the door frame 200 from closing. When the movable member 20 retracts backward relative to the base 10 along the guide direction of the linear guide structure, it can release the obstruction of the closing of the door panel 100 and the door frame 200.

[0037] like Figure 2 and Figure 3 As shown, the linear guide structure includes guide wings 11 located on both sides of the base 10 and first guide grooves 21 located on both sides of the movable member 20. The two guide wings 11 are embedded in the two first guide grooves 21 in a one-to-one correspondence. The accompanying drawings show that the linear guide structure also includes a second guide groove 22 on the bottom wall of the movable member 20. A T-shaped guide slider 14 is embedded in the second guide groove 22. The T-shaped guide slider 14 is fixedly connected to the base 10, and the base 10 is in contact with the bottom surface of the movable member 20.

[0038] like Figure 3 and Figure 8 As shown, the first elastic element 2 causes the movable element 20 to have an automatic forward extension tendency relative to the base 10. The accompanying drawings show that the first elastic element 2 is a tension spring, located inside the movable element 20. One end of the tension spring is connected to the base 10, and the other end is connected to the rear end of the movable element 20. Depending on the actual situation, the first elastic element 2 can also adopt other structures, such as a compression spring, the attraction of two permanent magnets, or the repulsion of two permanent magnets.

[0039] like Figure 3 and Figure 8As shown, the middle part of the blocking hook 40 is rotatably connected to the front end of the movable member 20 via a shaft 3. The inner end of the blocking hook 40 is a hook part 41, and the base 10 has a guide wing part 12 that matches the hook part 41. The outer end of the blocking hook 40 is an abutment part 42, which is located outside the front end face of the movable member 20.

[0040] like Figure 3 and Figure 8 As shown, the blocking hook 40 and the movable member 20 are also connected by a second elastic member 4. The second elastic member 4 can cause the blocking hook 40 to swing back to its original position, that is, it can keep the hook part 41 of the blocking hook 40 in the state of being embedded in the guide wing part 12. The second elastic member 4 is a compression spring or a torsion spring.

[0041] like Figure 1 and Figure 9 As shown, the backrest 30 is block-shaped and is used for installation on the door frame 200. The attached diagram in the instruction manual shows that the backrest 30 is adhered to the door frame 200 using the second double-sided adhesive 5. Depending on the actual situation, the backrest 30 can also be installed on the door frame 200 using screws.

[0042] like Figure 3 As shown, the movable component 20 is equipped with an auxiliary guide block 6 and auxiliary guide plates 7 located on both sides of the auxiliary guide block 6. The auxiliary guide block 6 is fixedly connected to the base 10, and the auxiliary guide plates 7 are fixedly connected to the movable component 20. To ensure that the auxiliary guide block 6 can connect to the base 10 and move with the base 10, a clearance groove is provided on the bottom wall of the movable component 20. The base 10 has a connecting part 13 that is embedded in the clearance groove and connected to the auxiliary guide block 6. A linear guide structure is formed between the auxiliary guide block 6 and the auxiliary guide plate 7, and a linear guide structure is also formed between the side of the clearance groove and the side of the connecting part 13, thereby improving the load-bearing capacity between the movable component 20 and the base 10. The clearance groove is shared with the second guide slide 22, and the T-shaped guide slider 14 is integrated with the base 10.

[0043] like Figures 1 to 11 As shown, the door anti-pinch device 300 also includes a stop portion 42, which includes a screwing portion 51 and a connecting cap portion 52. The connecting cap portion 52 is located inside the movable member 20. The bottom wall of the movable member 20 has a tubular portion 23 that is inserted into the connecting cap portion 52 and is in the shape of an arc. A positioning space is formed between the top surface of the tubular portion 23 and the top wall of the movable member 20 to restrict the axial movement of the connecting cap portion 52. Thus, the connecting cap portion 52 is rotatably connected to the movable member 20, and the screwing portion 51 protrudes through the top wall of the movable member 20. The accompanying drawings show that the connecting cap portion 52 has two blocking surfaces for the end face of the auxiliary guide block 6 to contact, namely the first blocking surface 53 and the second blocking surface 54. The connecting cap portion 52 also has a notch 55 to ensure the movement space of the auxiliary guide block 6.

[0044] like Figures 5 to 9 As shown, the door anti-pinch device 300 also includes an installation auxiliary block 60. The installation auxiliary block 60 has a positioning groove 61 for the movable part 20 to be embedded in. When the movable part 20 is embedded in the positioning groove 61, a positioning connection is formed between the installation auxiliary block 60 and the movable part 20. The installation auxiliary block 60 also has a first positioning side 62 that can contact the door panel 100, a second positioning side 63 that can contact the door frame 200, and a third positioning side 64 that can contact the backrest 30. The first positioning side 62 and the second positioning side 63 are arranged perpendicularly, and the first positioning side 62 and the third positioning side 64 are arranged parallelly.

[0045] The installation and use of the door anti-pinch device 300 are described to further illustrate the function and advantages of each component.

[0046] like Figures 6 to 8 As shown, with the door panel 100 and door frame 200 in a closed state, the first positioning side 62 of the mounting auxiliary block 60 is first attached to the surface of the door panel 100, and the second positioning side 63 is attached to the vertical side of the door frame 200. Preferably, adhesive can be applied to the first positioning side 62, thus pre-installing the mounting auxiliary block 60 on the door panel 100. The installation height of the mounting auxiliary block 60 relative to the door panel 100 can be freely set as needed. Next, keeping the base 10 and movable member 20 in a retracted state, i.e., with the hook 41 embedded within the guide wing 12, the movable member 20 is inserted into the positioning groove 61 of the mounting auxiliary block 60, and the base 10 is fixed to the door panel 100.

[0047] The installation auxiliary block 60 not only improves the installation level of the base 10 and the movable part 20, but also improves the consistency of the distance between the abutment part 42 of the blocking hook 40 and the vertical side of the door frame 200.

[0048] like Figure 8 As shown, the abutment part 42 is in the first position, and the rear end face of the auxiliary guide block 6 can contact the first blocking surface 53, thereby preventing the movable part 20 from extending forward relative to the base 10. This structure is used to ensure that the movable part 20 remains in the retracted state relative to the base 10, that is, the movable part 20 will not automatically extend forward relative to the base 10 if the blocking hook 40 is accidentally triggered during or after installation.

[0049] like Figure 9 As shown, with the door panel 100 and door frame 200 in a closed state, the backrest 30 first rests against the third positioning side 64 of the mounting auxiliary block 60, and then the backrest 30 is fixed to the side of the door frame 200. The backrest 30 contacts the abutment part 42 of the blocking hook 40, relative to... Figure 7 The state shown prevents the swing hook 40 from swinging, causing the hook 41 to disengage from the guide wing 12 and compressing the second elastic element 4. Afterwards, the mounting auxiliary block 60 is removed.

[0050] The installation of the auxiliary block 60 also improves the consistency of the installation position of the backing 30, thereby significantly improving the stability of the blocking hook 40 when it is triggered.

[0051] like Figure 10 As shown, the abutment part 42 is screwed to the second position, typically with a screwing angle of 90°. A screwing angle limiting structure is provided between the abutment part 42 and the movable part 20; the notch 55 is directly opposite the auxiliary guide block 6. When the door panel 100 and the door frame 200 are in the closed state, the backrest 30 contacts the abutment part 42 of the blocking hook 40, the blocking hook 40 swings, the hook part 41 disengages from the guide wing part 12, and the second elastic member 4 is compressed.

[0052] Under the action of the first elastic element 2, the movable element 20 automatically extends horizontally forward a short distance relative to the base 10, such as 1-2 mm. The front end of the movable element 20 contacts the backrest 30, and the hook 41 is misaligned with the guide wing 12. This prevents the hook 41 from re-embedding into the guide wing 12 when the door panel 100 is rotated and opened, thus increasing the probability that the movable element 20 will automatically extend horizontally forward relative to the base 10. The backrest 30 prevents the blocking hook 40 from contacting the door frame 200, thereby preventing the door frame 200 from being damaged by friction.

[0053] When the door panel 100 and door frame 200 switch from the closed state to the open state, under the action of the first elastic element 2, the movable element 20 automatically extends forward relative to the base 10 until the end face of the base 10 contacts the movable element 20 or the rear end face of the auxiliary guide block 6 contacts the movable element 20, thus limiting the forward extension movement. Under the action of the second elastic element 4, the swing hook 40 is prevented from resetting and swinging.

[0054] like Figure 11 As shown, when the door panel 100 and the door frame 200 switch from the open state to the closed state, the front end of the moving part 20 is located between the door frame 200 and the door panel 100, which prevents the door panel 100 and the door frame 200 from closing, reducing the possibility of children or pets getting pinched.

[0055] like Figure 11 As shown, when the abutment part 42 is screwed to the first position, the front end face of the auxiliary guide block 6 can contact the second blocking surface 54, thereby preventing the movable part 20 from retracting backward relative to the base 10.

[0056] When the abutment 42 is in the second position, the door is in the open position, and the movable member 20 is extended relative to the base 10, the movable member 20 is manually pushed to retract rearward relative to the base 10 until the hook 41 automatically engages with the guide wing 12. Furthermore, when the door changes from the open to the closed position, the abutment 42 of the blocking hook 40 contacts the backrest 30, causing the blocking hook 40 to swing. The hook 41 disengages from the guide wing 12, and under the action of the first elastic member 2, the movable member 20 automatically extends forward a short distance relative to the base 10, causing the hook 41 to misalign with the guide wing 12.

[0057] Example 2: This example is basically the same in structure and principle as Example 1. The similarities will not be repeated here; only the differences will be described. The differences are: the blocking hook 40 is installed at the rear end of the movable part 20, and the auxiliary installation block 60 is not included. The door anti-pinch device 300 needs to be placed at the corner. The movement direction of the movable part 20 can be horizontal or vertical.

Claims

1. A door anti-pinch device (300), comprising a base (10) and a movable part (20); The base (10) is used for mounting on the door panel (100); The movable part (20) is connected to the base (10) through a linear guide structure and a first elastic part (2). After the movable part (20) extends and moves relative to the base (10) along the guide direction of the linear guide structure, it can block the door panel (100) and the door frame (200) from closing. After the movable part (20) retracts and moves relative to the base (10) along the guide direction of the linear guide structure, it can release the blocking of the door panel (100) and the door frame (200) from closing. The first elastic element (2) causes the movable element (20) to have an automatic extension tendency relative to the base (10); Its features are, The door anti-pinch device (300) also includes a blocking hook (40) and a backrest (30); The middle part of the blocking hook (40) is rotatably connected to one end of the movable part (20) via a shaft (3). The inner end of the blocking hook (40) is a hook part (41), and the base (10) has a guide wing part (12) that matches the hook part (41). The outer end of the blocking hook (40) is an abutment part (42), which is located on the outside of the movable part (20). The backrest (30) is used to install on the door frame (200), and the backrest (30) is for contact with the abutment (42); When the door is in the open state and the movable part (20) is in the retracted state relative to the base (10), the hook (41) can be embedded in the guide wing (12) to limit the movable part (20) from automatically extending relative to the base (10); when the door changes from the open state to the closed state, the abutting part (42) of the blocking hook (40) contacts the backrest (30) and causes the blocking hook (40) to swing, and the hook (41) disengages from the guide wing (12).

2. The door anti-pinch device (300) according to claim 1, characterized in that, The blocking hook (40) is installed on the front end of the movable part (20). When the door changes from the open state to the closed state, under the action of the first elastic member (2), the movable part (20) automatically extends forward horizontally by 1-2 mm relative to the base (10). The hook (41) is misaligned with the guide wing (12), and the front end of the movable part (20) contacts the backrest (30). The backrest (30) prevents the blocking hook (40) from directly contacting the door frame (200).

3. The door anti-pinch device (300) according to claim 1, characterized in that, The linear guide structure includes guide wings (11) on both sides of the base (10) and guide grooves on both sides of the movable part (20), with the two guide wings (11) being embedded in the two guide grooves in a one-to-one correspondence; The and / or linear guide structure includes a guide groove formed on the bottom wall of the movable part (20), a T-shaped guide slider (14) is embedded in the guide groove, the T-shaped guide slider (14) is fixedly connected to the base (10) and the base (10) contacts the bottom surface of the movable part (20).

4. The door anti-pinch device (300) according to claim 1, 2, or 3, characterized in that, The blocking hook (40) and the movable part (20) are also connected by a second elastic member (4). The second elastic member (4) can make the blocking hook (40) swing back to its original position, that is, it can make the hook part (41) of the blocking hook (40) maintain the movement tendency of being embedded in the guide wing part (12).

5. The door anti-pinch device (300) according to claim 1, 2, or 3, characterized in that, The movable part (20) has a cavity inside. An auxiliary guide block (6) and auxiliary guide plates (7) located on both sides of the auxiliary guide block (6) are provided inside the movable part (20). The auxiliary guide block (6) is fixedly connected to the base (10), and the auxiliary guide plates (7) are fixedly connected to the movable part (20). A linear guide structure is formed between the auxiliary guide block (6) and the auxiliary guide plates (7).

6. The door anti-pinch device (300) according to claim 5, characterized in that, The door anti-pinch device (300) further includes an abutment part (42), which includes a screwing part (51) and a connecting cap part (52). The connecting cap part (52) is located inside the movable part (20), and the connecting cap part (52) is rotatably connected to the movable part (20). The screwing part (51) extends out of the movable part (20). The connecting cap part (52) has a first blocking surface (53) and a notch (55) that ensures the movement space of the auxiliary guide block (6). One end face of the auxiliary guide block (6) contacts the first blocking surface (53) to prevent the movable part (20) from extending and moving relative to the base (10).

7. The door anti-pinch device (300) according to claim 6, characterized in that, The connecting cap (52) also has a second blocking surface (54), and the other end face of the auxiliary guide block (6) contacts the second blocking surface (54) to prevent the movable part (20) from retracting relative to the base (10).

8. The door anti-pinch device (300) according to claim 1, 2 or 3, characterized in that, The door anti-pinch device (300) also includes an installation auxiliary block (60), which has a positioning groove (61) for the movable part (20) to be embedded in. When the movable part (20) is embedded in the positioning groove (61), a positioning connection is formed between the installation auxiliary block (60) and the movable part (20). The installation auxiliary block (60) also has a first positioning side (62) that can contact the door panel (100) and a second positioning side (63) that can contact the door frame (200). The first positioning side (62) and the second positioning side (63) are arranged vertically.

9. The door anti-pinch device (300) according to claim 8, characterized in that, The installation auxiliary block (60) also has a third positioning side (64) for contact with the backing (30), and the first positioning side (62) and the third positioning side (64) are arranged in parallel.

10. The door anti-pinch device (300) according to claim 9, characterized in that, An adhesive is provided on the first positioning side (62).

Images