Multi-purpose door stopper

Abstract

A multi-purpose door-blocking device, characterized in that it includes a first component and at least two second components, the first component is used to be set on a movable door leaf so that it can move with the movable door leaf, and the two second components are used to be respectively set at different positions of a fixed building base so that they can be combined with the first component at different positions to keep the door leaf at different opening positions; the first component includes a blocking head and a mounting seat, the mounting seat is used to be set on the movable door leaf, the blocking head is movably set on the mounting seat, and the blocking head is configured to be able to switch between a first blocking position and a second blocking position on the mounting seat, so that when the blocking head is set at the first blocking position, it can be combined with one of the second components to keep the door leaf at the first opening position, and when the blocking head is set at the second blocking position, it can be combined with the other second component to keep the door leaf at the second opening position.

Description

Technical Field

[0001] The invention relates to a multi-purpose door-blocking device which can keep a door leaf at different opening positions. Background Art

[0002] In order to position the door leaf in the open state and prevent the door leaf from swinging randomly due to the wind, a door stopper (also known as a door suction) is often provided between the door leaf and the building wall or floor. There are various door stops on the market, such as the door stopper disclosed in Chinese invention patent 201780005834.3, which includes a door load-bearing portion and a bottom plate load-bearing portion. The door load-bearing portion includes a magnet and a material stopper plate, and a spherical groove open downward is provided on the material stopper plate. The door load-bearing portion is used to be installed on the door leaf. During installation, a hole is drilled in the bottom of the door leaf, the magnet is installed in the hole, and then the material stopper plate is also installed to the bottom of the door leaf to keep the magnet in the hole. The bottom plate load-bearing portion includes a guide sleeve and a pin slidably arranged in the guide sleeve, and the bottom plate load-bearing portion is installed on the floor. When the door leaf moves in the direction of opening the door, the magnet moves with the door leaf to the upper part of the load-bearing portion of the bottom plate, thereby magnetically attracting the pin to rise up and combine with the spherical groove to stop the door softly. There are many other door stops with similar structures, but they all have one thing in common, that is, they are very single in purpose. Summary of the invention

[0003] The use of the door stop disclosed in Patent 201780005834.3 is very limited because it can only keep the door leaf at the maximum opening position, but cannot keep the door leaf at other opening positions. Under the action of the above-mentioned door stop, the selectivity of the opening position of the door leaf is very unsatisfactory. In view of the above technical problems, it is necessary to further improve the structure of the door stop. The present invention proposes a multi-purpose door stop device, characterized in that it includes a first component and at least two second components, the first component is used to be arranged on a movable door leaf so that it can move with the movable door leaf, and the two second components are used to be respectively arranged at different positions of a fixed building base so that they can be combined with the first component at different positions to keep the door leaf at different opening positions; the first component includes a blocking head and a mounting seat, the mounting seat is used to be arranged on the movable door leaf, the blocking head is movably arranged on the mounting seat, and the blocking head is configured to be able to switch between a first blocking position and a second blocking position on the mounting seat, so that when the blocking head is set at the first blocking position, it can be combined with one of the second components to keep the door leaf at the first opening position, and when the blocking head is set at the second blocking position, it can be combined with another second component to keep the door leaf at the second opening position.

[0004] The blocking head is movably arranged on the mounting seat, and the above feature defines that the position of the blocking head is adjustable, and the blocking position can be adjusted by swinging or sliding. When the blocking head is arranged at one of the blocking positions, it can be combined with one of the second components and can avoid the other second component.

[0005] According to the above technical scheme, compared with the prior art, the beneficial technical effect of the present invention is that: since the blocking head can switch between the first blocking position and the second blocking position, it can be combined with the second component located at different positions to keep the door leaf at different opening positions. In this way, under the action of the door blocking device, the door leaf can be kept at different opening positions, optimizing the applicability of the door blocking device. For example, in actual applications, one of the second components can be set at a position with a door opening angle of 15°, and the other second component can be set at a fully open door angle position. In this way, when the first component is set at one of the blocking positions and can be combined with the second component located at a door opening angle of 15°, the door leaf can only open a gap for the indoor personnel to observe the situation outside the door clearly and then determine whether to continue opening the door. In this way, it can be prevented that the lawless elements take advantage of the moment when the indoor personnel open the door, violently hit the door leaf without any precautions and forcibly break into the room, threatening the property safety and personal safety of the indoor personnel. Alternatively, one of the second components can be set at a position where the door opening angle is 45°. In this way, when the first component is set at one of the blocking positions and can be combined with the second component located at the 45° door opening angle position, the door leaf can be kept in a half-open state, which is conducive to the circulation of indoor air flow without the need to fully open the door leaf, thereby protecting the privacy of the indoor activity space.

[0006] A further technical solution may be that when the blocking head is set at the first blocking position, the vertical distance between the blocking head and the building ground is H1, and when the blocking head is set at the second blocking position, the vertical distance between the blocking head and the building ground is H2, and H1 and H2 are not equal. In this way, the second components of different heights can be configured to be combined with the blocking heads at different blocking positions. The blocking head can adjust the distance between it and the building ground by swinging or sliding in the vertical direction.

[0007] In order to enable the blocking head to swing and adjust the blocking position, a further technical solution may be that the first component also includes a crank arm, the crank arm is roughly L-shaped and has a first arm body and a second arm body, the blocking head is arranged on the second arm body, and the first arm body is rotatably arranged on the mounting seat; a driving unit is also arranged on the mounting seat, and the driving unit can drive the first arm body to rotate, and the rotating first arm body can drive the second arm body to swing up and down around the first arm body, so that the blocking head can switch between the first blocking position and the second blocking position. According to the above technical solution, the blocking head can be combined with the second component located at a lower position, and can also be combined with another second component located at a higher position. In addition, the driving operation of the blocking head can be simplified by the driving unit.

[0008] As for the structural form of the driving unit, it can be various. Further, the following technical solution can be adopted, wherein the driving unit is a driving motor, and the output shaft of the driving motor is connected to the first arm body. In this way, the driving motor can be used to automatically switch the blocking head to the correct blocking position. Alternatively, a further technical solution can be that the driving unit is an elastic element, one end of the elastic element is connected to the mounting seat, and the other end is connected to the first arm body. In this way, the use of the elastic element is not only conducive to simplifying the driving structure of the blocking head, but also does not require electric energy to drive, which is green and environmentally friendly. Among them, the elastic element can be a torsion spring, elastic rubber, etc., which will be further discussed below.

[0009] A further technical solution may be that a manual control button is also provided on the mounting seat, and a positioning part is provided on the first arm body, the manual control button is configured to be able to combine with the positioning part to prevent the elastic element from driving the first arm body to rotate, so that the blocking head can be kept in the first blocking position, and the manual control button is also configured to be able to release the positioning part so that the first arm body can rotate under the drive of the elastic element, so that the blocking head can switch to the second blocking position. Wherein, the structure of the positioning part can be various, for example, the positioning part can be a protruding structure, and the manual control button abuts against the positioning part; or the positioning part is a long strip-shaped pit, and the manual control button is clamped in the pit. In this way, the manual control button is combined with the positioning part so that the first arm body cannot rotate under the drive of the elastic element. However, when the manual control button releases the positioning part, the first arm body can rotate under the drive of the elastic element due to the loss of the obstruction of the manual control button.

[0010] The blocking head does not need to rotate within a range of 360°. In order to limit the rotation angle of the blocking head, a further technical solution can also be that a rotation angle constraint mechanism is also arranged between the first arm body and the mounting seat, and the rotation angle constraint mechanism includes a pair of circumferentially spaced limiting parts and a boss extending between the pair of limiting parts. The boss and the limiting part can be interchangeably arranged on the first arm body and the mounting seat, and the rotation angle constraint mechanism is used to limit the rotation angle of the first arm body. Among them, the form of forming the limiting part can be various, for example, the limiting part can be formed by a pair of raised columns, and the first and tail end faces of the continuously extended annular protrusion can also be used to form a pair of limiting parts respectively. In addition, the boss and the limiting part can be interchangeably arranged on the first arm body and the mounting seat. The above feature defines that when the boss is arranged on the first arm body, the pair of limiting parts are arranged on the mounting seat; when the pair of limiting parts are arranged on the first arm body, the boss is arranged on the mounting seat.

[0011] A further technical solution may be that an arm-receiving cavity is provided on the mounting seat, the first arm body is rotatably provided in the arm-receiving cavity, the boss is provided on the arm section of the first arm body inserted into the arm-receiving cavity, and the limiting portion is provided on the cavity side wall of the arm-receiving cavity; the driving unit is a torsion spring, the torsion spring is sleeved on the arm section of the first arm body inserted into the arm-receiving cavity, one leg of the torsion spring is fixed on the boss, and the other leg is fixed on the cavity side wall of the arm-receiving cavity. According to the above technical solution, the boss, the limiting portion and the torsion spring are accommodated in the arm-receiving cavity, which can not only reduce the adverse effects of their exposure on the appearance of the door-blocking device, but also use the arm-receiving cavity as an outer protective layer to prevent foreign objects from colliding with them and causing damage.

[0012] A further technical solution may be that an axial positioning mechanism is also provided between the first arm body and the mounting seat, the axial positioning mechanism includes a circumferentially extending groove and a positioning pin fixed in the groove, the groove and the positioning pin are interchangeably provided on the first arm body and the mounting seat, and the axial positioning mechanism is used to limit the axial position of the first arm body but does not hinder the rotation of the first arm body. The groove may be an arc-shaped groove segment, the arc length of which is adapted to the rotation range of the first arm body; it may also be an annular groove ring. The groove and the positioning pin are interchangeably provided on the first arm body and the mounting seat, and the above-mentioned feature defines that when the groove is provided on the first arm body, the positioning pin is provided on the positioning seat, and when the positioning pin is provided on the first arm body, the groove is provided on the positioning seat.

[0013] A further technical solution may be that the blocking head can slide in a horizontal direction or a vertical direction, so that the switching between the first blocking position and the second blocking position can be completed in a sliding manner.

[0014] Since the present invention has the above characteristics and advantages, it can be applied to a multi-purpose door blocking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the first component 100 in the multi-purpose door-blocking device using the technical solution of the present invention;

[0016] Figure 2 is a schematic diagram of the exploded structure of the first component 100;

[0017] Figure 3 is a schematic diagram of the combination of the first component 100 and the second component 200, wherein the dotted line portion 400 represents a movable door leaf, and the dotted line portion 500 represents a fixed building matrix;

[0018] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0019] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0020] Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure in the CC direction;

[0021] Figure 7 yes Figure 4 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0022] Figure 8 is a schematic diagram of the structure of one application of the multi-purpose door blocking device, showing that the blocking head 120 is in the first blocking position

[0023] And the case of combining with the second member 200;

[0024] Fig. 9 The multi-purpose door blocking device is Figure 8 Another variation state diagram in the application is shown, which shows that the blocking head 120 is in the second blocking position and is combined with the second component 300. DETAILED DESCRIPTION

[0025] As shown in the figure, the present invention proposes a multi-purpose door-blocking device, characterized in that it includes a first component 100 and at least two second components (200, 300), the first component 100 is used to be arranged on a movable door leaf 400 so as to be able to move with the movable door leaf 400, and the two second components (200, 300) are used to be respectively arranged at different positions of a fixed building base so as to be able to be combined with the first component 100 at different positions to keep the door leaf 400 at different opening positions; the first component 100 includes a blocking head 120 and a mounting seat 3. The mounting seat 3 is used to be set on the movable door leaf 400, and the blocking head 120 is movably set on the mounting seat 3. The blocking head 120 is configured to be able to switch between a first blocking position and a second blocking position on the mounting seat 3, so that when the blocking head 120 is set at the first blocking position, it can be combined with one of the second components 200 to keep the door leaf 400 at the first opening position, and when the blocking head 120 is set at the second blocking position, it can be combined with another second component 300 to keep the door leaf 400 at the second opening position.

[0026] The above technical solution is further described below in conjunction with the accompanying drawings: Figure 1 to Figure 6As shown, the first component 100 includes a crank arm 1 and a mounting seat 3. The crank arm 1 is generally L-shaped and has a first arm body 11 and a second arm body 12. A blocking head 120 is provided on the second arm body 12. The first arm body 11 is rotatably arranged on the mounting seat 3. Specifically, the mounting seat 3 includes a mounting base 30 and extensions (31, 32) disposed on the upper and lower sides of the mounting base 30. Screws pass through the extensions (31, 32) to fix the mounting seat 3 to the door leaf 400. An arm cavity 301 is provided on the mounting base 30. The first arm body 11 is rotatably arranged in the arm cavity 301. A rotation angle constraint mechanism is also provided between the first arm body 11 and the mounting seat 3. The rotation angle constraint mechanism is used to limit the rotation angle of the first arm body 11. The rotation angle constraint mechanism includes a pair of circumferentially spaced limiting portions (303, 304) and a boss 112 extending between the pair of limiting portions (303, 304). The boss 112 and the limiting portions (303, 304) can be interchangeably arranged on the first arm body 11 and the mounting seat 3. In this embodiment, a continuously extending annular protrusion 302 is arranged on the side wall of the arm cavity 301, and the front and rear end surfaces of the annular protrusion 302 respectively form a pair of limiting portions (303, 304). The boss 112 is arranged on the arm section of the first arm body 11 inserted into the arm cavity 301. The rotation angle constraint mechanism is used to limit the rotation angle of the first arm body 11. In this embodiment, the rotation angle of the first arm body 11 is 90°. Of course, there are various forms for forming the limiting portion (303, 304). In other embodiments, the limiting portion (303, 304) can also be formed by a pair of raised columns; in addition, a pair of the limiting portions (303, 304) can be arranged on the first arm body 11, and the boss 112 can be arranged on the mounting seat 3.

[0027] like Figure 2 and Figure 4As shown, a driving unit is also provided on the mounting seat 3, and the driving unit can drive the first arm body 11 to rotate, and the rotating first arm body 11 can drive the second arm body 12 to swing up and down around the first arm body 11, thereby enabling the blocking head 120 to switch between the first blocking position and the second blocking position. In this embodiment, the driving unit is an elastic element, specifically a torsion spring 4 (of course, in other embodiments, the elastic element can also be a tension spring, elastic rubber, etc.), and the torsion spring 4 includes a ring body 40 and a pair of legs (41, 42) extending from the ring body 40. The ring body 40 of the torsion spring 4 is inserted into the arm section of the first arm body 11 inserted into the arm cavity 301, and one leg 42 of the torsion spring 4 is fixed on the boss 112, and the other leg 41 is fixed on the side wall of the arm cavity 301. According to the above technical solution, the boss 112, the limiting portion (303, 304) and the torsion spring 4 are accommodated in the arm cavity 301, which can not only reduce the adverse effects of their exposure on the appearance of the door blocking device, but also use the arm cavity 301 as an outer protective layer to prevent foreign objects from colliding with them and causing damage. In addition, the use of the torsion spring 4 is not only conducive to simplifying the driving structure of the blocking head 120, but also does not require electric energy to drive, which is green and environmentally friendly. Secondly, the structural form of the driving unit is also diverse. For example, in other embodiments, the driving unit can be a driving motor, and the output shaft of the driving motor is connected to the first arm body 11. In this way, the driving motor can be used to automatically switch the blocking head 120 to the correct blocking position.

[0028] like Figure 2 and Figure 5As shown, a manual control button 2 and a reset spring 6 are also provided on the mounting seat 3. The manual control button 2 includes a button body 23, a control handle 21 extending from the button body 23, and a connecting boss 22. The button body 23 is accommodated in the arm cavity 301, and the control handle 21 is exposed outside the arm cavity 301. One end of the reset spring 6 is sleeved on the connecting boss 22, and the other end is pressed on the side wall of the arm cavity 301. A support shaft 7 is also provided on the mounting seat 3, and the manual control button 2 can tilt up and down around the support shaft 7. A positioning portion 111 is provided on the first arm body 11, and the positioning portion 111 is a structure protruding from the rear end wall of the first arm body 11. The manual control button 2 is configured to be combined with the positioning portion 111 to prevent the torsion spring 4 from driving the first arm 11 to rotate, thereby allowing the blocking head 120 to remain in the first blocking position. The manual control button 2 is also configured to release the positioning portion 111 so that the first arm 11 can rotate under the drive of the torsion spring 4, thereby allowing the blocking head 120 to switch to the second blocking position. In this way, the manual control button 2 is combined with the positioning portion 111 to prevent the first arm 11 from rotating under the drive of the torsion spring 4. However, when the manual control button 2 releases the positioning portion 111, the first arm 11 can rotate under the drive of the torsion spring 4 due to the loss of the obstruction of the manual control button 2. In addition, the structure of the positioning portion 111 can be diverse. In other embodiments, the positioning portion 111 is a long strip-shaped pit, and the manual control button 2 is clamped in the pit.

[0029] like Figure 2 , Figure 4 and Figure 6As shown, an axial positioning mechanism is also provided between the first arm body 11 and the mounting seat 3, and the axial positioning mechanism includes a circumferentially extending groove 110 and a positioning pin 5 locked in the groove 110, and the groove 110 and the positioning pin 5 are replaceably provided on the first arm body 11 and the mounting seat 3. In this embodiment, the groove 110 is an annular groove ring and is provided on the first arm body 11, and the positioning pin 5 is provided on the mounting seat 3 and inserted into the arm cavity 301. The axial positioning mechanism is used to limit the axial position of the first arm body 11 but does not hinder the rotation of the first arm body 11. In other embodiments, the groove 110 can also be an arc-shaped groove segment, and the arc length of the groove 110 is adapted to the rotation range of the first arm body 11; in addition, the axial positioning mechanism can also adopt the following structural form, in which a receiving cavity is provided on the first arm body 11, and a protrusion extending into the receiving cavity is provided on the mounting seat 3, the groove 110 is provided on the protrusion of the mounting seat 3, and the positioning pin 5 is provided on the first arm body 11 and inserted into the receiving cavity.

[0030] The following is combined with Figure 8 and Fig. 9 One application of the multi-purpose door blocking device is discussed in detail. Figure 8 and Fig. 9As shown, the second component 200 is arranged on the building floor 500 and is located at a position where the door opening angle Q1 is 15°. The second component 200 is provided with a recessed portion 201 with a side opening portion. The blocking head 120 can pass through the side opening portion into the recessed portion 201 and is blocked by the side wall of the recessed portion 201 and cannot continue to move in the door opening direction. The second component 300 is arranged on the vertical wall 600, and a magnetic member (not shown in the figure) that can magnetically attract the blocking head 120 is arranged on the second component 300. When the door leaf 400 needs to be maintained at the first opening position with a door opening angle Q1 of 15°, the blocking head 120 is adjusted to the first blocking position (in this embodiment, the position where the blocking head 120 is adjusted in the vertical direction is the first blocking position), and the vertical spacing between the blocking head 120 and the building floor 500 is H1, and H1 is less than the height of the second component 200. At this time, the first arm 11 twists the torsion spring 4 through the support leg 42, so that the torsion spring 4 is deformed and stores energy. However, because the button body 23 of the manual control button 2 is arranged above the positioning part 111 and against the upper side of the positioning part 111 under the pushing action of the reset spring 6, the first arm 11 cannot rotate under the drive of the torsion spring 4, and the blocking head 120 can be kept in the first blocking position. When the door leaf moves in the direction of opening the door and opens to the 15° angle position, the blocking head 120 can pass through the side opening portion and enter the recessed part 201 and is blocked by the side wall of the recessed part 201 and cannot continue to move in the direction of opening the door. In this way, the door leaf 400 can only open a gap for the indoor personnel to observe the situation outside the door clearly and then determine whether to continue to open the door. In this way, it can prevent lawbreakers from forcibly breaking into the room by violently hitting the door leaf 400 without any precautions at the moment when the indoor personnel open the door, threatening the property safety and personal safety of the indoor personnel. When the door leaf needs to be fully opened later, the door leaf 400 must be moved in the closing direction first and the blocking head 120 must leave the recessed portion 201. Then, the manual control button 2 is pressed with the foot to make the button body 23 tilt around the support shaft 7 and leave the positioning portion 111, thereby releasing the positioning portion 111. At this time, the first arm 11 can rotate under the drive of the torsion spring 4, and the rotating first arm 11 drives the second arm 12 to swing around the first arm 11. Under the action of the rotation angle constraint mechanism, the first arm 11 can only rotate 90°, so that the blocking head 120 can be adjusted from the upright position to the horizontal position (in this embodiment, the second blocking position).At this time, the vertical distance between the blocking head 120 and the building ground 500 is H2, and H2 is greater than H1 and greater than the height of the second component 200, so that when the door leaf 400 moves in the door opening direction, the blocking head 120 can avoid the second component 200 and does not hinder the continued door opening movement of the door leaf 400. When the door leaf 400 is fully opened, the blocking head 120 can be combined and magnetically attracted to the second component 300 and can be maintained at the second opening position.

[0031] Of course, the multi-purpose door blocking device may also have other applications. For example, the second component 200 may be set at a position where the door opening angle is 45°. In this way, when the first component 100 is set at one of the blocking positions and can be combined with the second component 200 at the 45° door opening angle position, the door leaf 400 can be kept in a half-open state, which is beneficial to the circulation of indoor air flow without the need to fully open the door leaf 400, thereby protecting the privacy of the indoor activity space.

[0032] According to the above technical solution, since the blocking head 120 can switch between the first blocking position and the second blocking position, it can be combined with the second component (200 or 300) located at different positions to keep the door leaf 400 at different opening positions. In this way, under the action of the door blocking device, the door leaf 400 can be kept at different opening positions, optimizing the applicability of the door blocking device. In addition, the blocking head 120 adjusts the blocking position by swinging, and in other embodiments, the blocking head 120 can also slide in the horizontal direction or the vertical direction, so that the switching between the first blocking position and the second blocking position can be completed by sliding.

Claims

1. Multi-purpose door blocking device, characterized in that: The invention comprises a first component and at least two second components, wherein the first component is used to be arranged on a movable door leaf so as to be able to move with the movable door leaf, and the two second components are used to be respectively arranged at different positions of a fixed building substrate so as to be able to be combined with the first component at different positions to keep the door leaf at different opening positions; the first component comprises a blocking head and a mounting seat, the mounting seat is used to be arranged on the movable door leaf, the blocking head is movably arranged on the mounting seat, and the blocking head is configured to be able to switch between a first blocking position and a second blocking position on the mounting seat, so that when the blocking head is arranged at the first blocking position, it can be combined with one of the second components to keep the door leaf at the first opening position, and when the blocking head is arranged at the second blocking position, it can be combined with another second component to keep the door leaf at the second opening position; When the blocking head is set at the first blocking position, the vertical distance between the blocking head and the building ground is H1, and when the blocking head is set at the second blocking position, the vertical distance between the blocking head and the building ground is H2, and H1 is not equal to H2; The first component also includes a crank arm, which is roughly L-shaped and has a first arm body and a second arm body. The blocking head is arranged on the second arm body, and the first arm body is rotatably arranged on the mounting seat; a driving unit is also arranged on the mounting seat, and the driving unit can drive the first arm body to rotate, and the rotating first arm body can drive the second arm body to swing up and down around the first arm body, thereby enabling the blocking head to switch between the first blocking position and the second blocking position.

2. The multi-purpose door blocking device according to claim 1, characterized in that: The driving unit is a driving motor, and the output shaft of the driving motor is drivingly connected to the first arm.

3. The multi-purpose door blocking device according to claim 1, characterized in that: The driving unit is an elastic element, one end of which is connected to the mounting seat, and the other end of which is connected to the first arm.

4. The multi-purpose door blocking device according to claim 3, characterized in that: A manual control button is also provided on the mounting seat, and a positioning portion is provided on the first arm body. The manual control button is configured to be combined with the positioning portion to prevent the elastic element from driving the first arm body to rotate, thereby allowing the blocking head to remain in the first blocking position. The manual control button is also configured to release the positioning portion so that the first arm body can rotate under the drive of the elastic element, thereby allowing the blocking head to switch to the second blocking position.

5. The multi-purpose door blocking device according to any one of claims 1 to 4, characterized in that: A rotation angle constraint mechanism is also arranged between the first arm body and the mounting seat, and the rotation angle constraint mechanism includes a pair of circumferentially spaced limiting portions and a boss extending between the pair of limiting portions. The boss and the limiting portion can be interchangeably arranged on the first arm body and the mounting seat. The rotation angle constraint mechanism is used to limit the rotation angle of the first arm body.

6. The multi-purpose door blocking device according to claim 5, characterized in that: An arm-receiving cavity is arranged on the mounting seat, the first arm body is rotatably arranged in the arm-receiving cavity, the boss is arranged on the arm section of the first arm body inserted into the arm-receiving cavity, and the limiting portion is arranged on the cavity side wall of the arm-receiving cavity; the driving unit is a torsion spring, the torsion spring is sleeved on the arm section of the first arm body inserted into the arm-receiving cavity, one leg of the torsion spring is fixed on the boss, and the other leg is fixed on the cavity side wall of the arm-receiving cavity.

7. The multi-purpose door blocking device according to any one of claims 1 to 4, characterized in that: An axial positioning mechanism is also arranged between the first arm body and the mounting seat, and the axial positioning mechanism includes a circumferentially extending groove and a positioning pin fixed in the groove. The groove and the positioning pin can be replaceably arranged on the first arm body and the mounting seat. The axial positioning mechanism is used to limit the axial position of the first arm body but not hinder the rotation of the first arm body.

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