CN210049796U - Prevent wind horizontal pole trip gear and prevent wind door mechanism - Google Patents
Prevent wind horizontal pole trip gear and prevent wind door mechanism Download PDFInfo
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- CN210049796U CN210049796U CN201822087121.0U CN201822087121U CN210049796U CN 210049796 U CN210049796 U CN 210049796U CN 201822087121 U CN201822087121 U CN 201822087121U CN 210049796 U CN210049796 U CN 210049796U
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Abstract
The utility model provides a wind-proof cross rod tripping device and a wind-proof door mechanism, belonging to the technical field of door body wind-proof, comprising a push rod, a fixed component, a lock and a wind-proof cross rod supporting piece; the windproof cross rod supporting piece comprises a connecting side plate, a bottom plate and a free side plate, wherein one end of the bottom plate is rotatably connected with one end of the connecting side plate, which is close to the ground; the bottom plate rotates to the horizontal position and can be abutted against one end of the free side plate close to the ground to form a containing groove for containing the windproof cross rod; one end of the push rod is a hand-held end, and the other end of the push rod is connected with the bottom plate; the pushing rod can drive the bottom plate to rotate towards the direction far away from the windproof cross rod, so that the windproof cross rod is separated from the windproof cross rod supporting piece under the action of the self gravity; the fixing component is connected with the push rod through a lockset. The indoor personnel can replace the calling or remote contact seeking help modes through operating the windproof cross rod tripping device, so that the personnel damage probability caused by untimely rescue of outdoor personnel is reduced.
Description
Technical Field
The utility model relates to a technical field is prevent wind to the door body, concretely relates to prevent wind horizontal pole trip gear and prevent wind door mechanism.
Background
The method has the advantages that immeasurable economic loss is brought to coastal areas in typhoon weather every year, and in order to improve the safety requirement of preventing typhoon of the building doors of the transformer substation, wind-proof cross bars are additionally arranged on the doors of outdoor equipment rooms of most coastal transformer substations in the opening direction before the arrival of the typhoon, so that the wind-proof capacity is enhanced.
However, after the windproof cross bar is additionally arranged, indoor personnel cannot open the door and can only be trapped indoors; when an emergency occurs, outdoor personnel can be called for help only by means of shouting or remote contact and the like to take off the windproof cross rod, so that the escape of operators is hindered, and great threat is brought to the life safety of the personnel.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a prevent wind horizontal pole trip gear, this prevent wind horizontal pole trip gear can solve the above-mentioned not enough of prior art, make personnel can be indoor will prevent wind the horizontal pole dropout to realize the mesh of fleing.
A second object of the utility model is to provide a prevent wind door mechanism, this prevent wind door mechanism include the utility model discloses a prevent wind horizontal pole trip gear that a first object provides.
Based on above-mentioned first purpose, the utility model provides a prevent wind horizontal pole trip gear, include: the device comprises a push rod, a fixed component, a lockset and a windproof cross rod supporting piece;
the windproof cross rod supporting piece comprises a connecting side plate, a free side plate and a bottom plate; one end of the bottom plate is rotatably connected with one end of the connecting side plate close to the ground; when the bottom plate rotates to a horizontal position, the other end of the bottom plate is abutted with one end, close to the ground, of the free side plate to form a containing groove for containing the windproof cross rod;
one end of the push rod is a handheld end, and the other end of the push rod is connected with the bottom plate;
the pushing rod can drive the bottom plate to rotate towards the direction far away from the windproof cross rod, so that the windproof cross rod is separated from the windproof cross rod supporting piece under the action of the self gravity;
the fixing member is connected with the push rod through the lock.
Further, the fixing member includes a fixing plate; the fixed plate is connected with the push rod through the lockset.
Furthermore, a plurality of limiting holes are formed in the fixing plate; the lock penetrates through the limiting hole to fix the push rod and the fixing plate.
Furthermore, a plurality of mounting holes are formed in the push rod; the lock penetrates through the mounting hole and the limiting hole to fix the push rod and the fixing plate.
Furthermore, the limiting holes are uniformly distributed along the length direction of the fixing plate; the mounting holes are uniformly distributed along the length direction of the push rod.
Furthermore, a handle used for pushing the push rod is further installed at the hand-held end of the push rod.
Further, the lock comprises a T-shaped bolt.
Further, the push rod is welded or hinged with the bottom plate.
Based on above-mentioned second purpose, the utility model provides a prevent wind door mechanism, include: the door body, the windproof cross rod and the windproof cross rod tripping device provided by the first object of the utility model;
the windproof cross rod supporting piece is arranged on one end face of the door body facing outdoors;
the fixed component is arranged on one end surface of the door body facing the interior of the room;
the door body is provided with a communicating hole for the push rod to pass through;
the windproof cross rod is placed in the accommodating groove.
Furthermore, the number of the wind-proof cross rod tripping devices is four; the two windproof cross rod tripping devices are arranged on one side of the door body from top to bottom; the other two windproof cross rod tripping devices are symmetrically arranged on the other side of the door body; the number of the windproof transverse rods is two; one wind-proof cross rod is positioned between the other wind-proof cross rod and the ground.
Adopt above-mentioned technical scheme, the utility model provides a prevent wind horizontal pole trip gear and prevent wind a technical effect of mechanism and have:
the utility model provides a prevent wind horizontal pole trip gear and prevent wind door mechanism, prevent wind the horizontal pole in the tradition setting and be used for the door body that typhoon weather prevent wind to put forward the improvement, promptly: the windproof cross rod supporting piece is designed to be that the bottom plate is rotationally connected with the connecting plate at one side and can form an accommodating groove for accommodating the windproof cross rod when being abutted against the connecting plate at the other side; moreover, the push rod is connected with the bottom plate; the bottom plate can be driven to rotate by operating the push rod so as to complete the closing or opening action of the accommodating groove, so that the windproof cross rod is placed in the accommodating groove or separated from the windproof cross rod supporting piece under the action of self gravity; through the structural improvement, on one hand, the normal use of the door after the windproof cross rod is detached is not influenced; on the other hand, the problem that in typhoon weather, if an emergency occurs, an operator cannot open the door and is only trapped indoors due to the use of the windproof cross rod is solved; the operator can replace calling or remote contact and other help seeking modes by operating the wind-proof cross rod tripping device, so that the probability of personnel injury caused by untimely rescue of outdoor personnel is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an open state of a wind-proof cross bar tripping device provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a closed state of a tripping device of the windproof cross bar provided by the embodiment of the present invention;
fig. 3 is a schematic structural diagram of an open state of the wind-proof door mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a closed state of the wind-proof door mechanism according to the embodiment of the present invention;
fig. 5 is a schematic structural view of the windproof door mechanism according to the embodiment of the present invention at a first viewing angle.
Reference numerals: 100-a push rod; 110-mounting holes; 120-a handle; 200-a fixation member; 210-a fixed plate; 211-a limiting hole; 300-a lockset; 400-windproof crossbar support; 410-connecting side plates; 420-free side plate; 430-a backplane; 440-a receiving groove; 500-door body; 600-windproof cross bar.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic structural diagram illustrating an open state of a trip device of a wind-proof cross bar according to an embodiment of the present invention; fig. 2 is a schematic structural diagram illustrating a closed state of a trip device of a wind-proof cross bar according to an embodiment of the present invention; fig. 3 is a schematic structural diagram illustrating an open state of the wind-proof door mechanism according to an embodiment of the present invention; fig. 4 is a schematic structural diagram illustrating a closed state of the wind door prevention mechanism according to an embodiment of the present invention; fig. 5 is a schematic structural view of the windproof door mechanism according to the embodiment of the present invention at a first viewing angle.
Specifically, as shown in fig. 1 and fig. 2, the embodiment of the utility model provides a prevent wind horizontal pole trip gear includes: a push bar 100, a fixing member 200, a locker 300, and a wind-proof rail supporter 400;
the wind-proof cross bar support 400 includes a connecting side plate 410, a free side plate 420 and a bottom plate 430;
one end of the bottom plate 430 is rotatably connected with one end of the connecting side plate 410 close to the ground; when the bottom plate 430 rotates to the horizontal position, the other end of the bottom plate 430 abuts against one end of the free side plate 420 close to the ground to form a containing groove 440 for containing the windproof cross rod 600;
the U-shaped support member 400 is made of metal material such as aluminum, iron or stainless steel;
the bottom plate 430 and the two side plates of the conventional windproof cross bar support 400 are assembled into a whole by welding; the windproof cross bar supporting piece 400 can be installed on the door frame of the outdoor side of the double-leaf door in a connecting mode of welding or screwing and the like, and the opening faces upwards for placing the windproof cross bar 600;
since the structure of the wind-proof rail support 400, the connection manner with the door frame, and the connection position are prior art, they will not be described in detail herein;
in this embodiment, the connection position and connection mode between the two side plates of the windproof cross bar support 400 and the door frame are not changed, and the bottom plate 430 is not connected with the two side plates in a welding manner;
the side plate of the windproof cross bar support 400 close to the doorframe is a connecting side plate 410;
one end of the bottom plate 430 may be connected to one end of the connecting side plate 410 near the ground through a hinge or a rotating shaft, etc. to meet the requirement that the bottom plate 430 can rotate relative to the connecting side plate 410;
the side plate of the windproof cross bar support 400 away from the doorframe is a free side plate 420;
when the bottom plate 430 rotates to a position parallel to the ground, the non-connecting end of the bottom plate 430 is abutted against one end of the free side plate 420 close to the ground, or a gap exists; however, the size of this gap should be smaller than the diameter of the wind rail 600 to avoid the wind rail 600 from disengaging from the wind rail support 400;
in this embodiment, taking the non-connecting end of the bottom plate 430 abutting against one end of the free side plate 420 close to the ground as an example, it is avoided that the windproof cross rod 600 is separated from the windproof cross rod supporting member 400 due to the base plate 430 shaking with the wind when the wind force is strong;
one end of the push rod 100 is a hand-held end, and the other end of the push rod 100 is connected with the bottom plate 430;
preferably, as shown in fig. 1 and 2, the push rod 100 is welded or hinged with the bottom plate 430;
the push rod 100 can drive the bottom plate 430 to rotate in a direction away from the windproof cross rod 600, so that the windproof cross rod 600 is separated from the windproof cross rod support 400 under the action of the self gravity;
since the wind-proof cross bar support 400 is installed on the door frame of the door body 500 facing the outdoor, when the push rod 100 is connected to the bottom plate 430, a through hole needs to be formed below the wind-proof cross bar support 400 on the door frame at a position close to the wind-proof cross bar support 400; the size of the communication hole should be designed such that when the push rod 100 is pushed or pulled to control the bottom plate 430, the push rod 100 does not get restricted when moving up and down in the communication hole;
the hand-held end of the push rod 100 is located indoors for operation by an operator;
the other end of the push rod 100 can pass through the communication hole to be welded with the bottom plate 430;
when an operator welds the push rod 100 to the bottom plate 430, the angle between the push rod 100 and the bottom plate 430 should be less than 90 ° in order for the operator to operate the push rod 100;
when the windproof cross rod 600 needs to be placed, the push rod 100 is pushed, the bottom plate 430 can rotate towards the direction close to the free side plate 420 until the bottom plate 430 abuts against the free side plate 420 to form the accommodating groove 440 for placing the windproof cross rod 600, and at the moment, the windproof cross rod support member 400 is in a closed state;
when the windproof cross bar 600 is required to be separated from the windproof cross bar support 400, the push rod 100 is pulled, the bottom plate 430 can rotate towards the direction away from the free side plate 420 until the windproof cross bar 600 falls to the ground from the opening between the bottom plate 430 and the free side plate 420 under the action of the self gravity, and at the moment, the windproof cross bar support 400 is in an open state;
the fixing member 200 is connected to the push rod 100 through the locker 300.
Preferably, as shown in fig. 1 and 2, the fixing member 200 includes a fixing plate 210; the fixing plate 210 is connected to the push bar 100 through the locker 300.
The fixing member 200 is installed near the communication hole, and may be installed on one surface of the door body 500 facing the indoor space by welding or screwing;
the fixing member 200 may be the fixing plate 210 or the fixing rod;
in the present embodiment, the fixing member 200 is taken as an example of the fixing plate 210 welded to the door body 500;
when the wind-proof cross bar support 400 is in a closed state, because the bottom plate 430 and the free side plate 420 are in an abutting relationship, when the thrust given to the push rod 100 disappears, the bottom plate 430 rotates in a direction away from the free side plate 420 under the action of self gravity, and the purpose of fixing the wind-proof cross bar 600 cannot be achieved;
the push bar 100 in the closed state of the wind-proof cross bar support 400 is fixed to the fixing plate 210 by the locker 300 by installing the fixing plate 210 at a position adjacent to the communication hole such that the push bar 100 is fixed with respect to the fixing plate 210;
the lockset 300 may employ a securing rope;
alternatively, the push rod 100 is fixed to the fixing plate 210 by a bolt;
so as to prevent the push rod 100 from disengaging and affecting the operation;
preferably, as shown in fig. 1 and 2, the fixing plate 210 is provided with a plurality of limiting holes 211; the lock 300 passes through the limiting hole 211 to fix the push rod 100 and the fixing plate 210;
preferably, as shown in fig. 1 and 2, the push rod 100 is provided with a plurality of mounting holes 110; the lock 300 passes through the mounting hole 110 and the limiting hole 211 to fix the push rod 100 and the fixing plate 210;
preferably, as shown in fig. 1 and 2, the limiting holes 211 are uniformly distributed along the length direction of the fixing plate 210; the mounting holes 110 are uniformly distributed along the length direction of the push rod 100;
one side of the fixing plate 210, which is connected with the push rod 100, is uniformly provided with a row of vertically arranged limiting holes 211, and a row of mounting holes 110 are uniformly formed in the push rod 100 along the axial direction of the push rod 100;
the limiting hole 211 is matched with the diameter of the mounting hole 110;
when the push rod 100 moves up and down corresponding to the fixing rod, the mounting holes 110 at different positions and the limiting holes 211 at different positions correspond to each other accurately so as to meet actual requirements on site;
preferably, as shown in fig. 1 and 2, the lock 300 includes a T-bolt.
The T-shaped bolt comprises a connecting frame and a pin rod; the connecting frame is provided with a pin hole for the pin rod to pass through and a limiting hole for limiting the motion of the pin rod; the pin rod is provided with a limiting part vertical to the pin rod;
when the door body 500 is installed specifically, an operator firstly screws or welds the connecting frame on one surface of the door body 500 facing the indoor space, in this embodiment, the screw is taken as an example for illustration, which is convenient for moving the position of the T-shaped bolt;
then, inserting the pin rod into the pin hole, enabling the pin rod to move relative to the pin hole, and enabling the limiting part to be buckled into the limiting hole when the pin rod moves to a required position, wherein the pin rod cannot move continuously at the moment, and the T-shaped bolt is in a locking state;
the limiting part is separated from the limiting hole, at the moment, the pin rod can continue to move, and the T-shaped bolt is in an unlocking state;
the diameter of the pin rod is matched with the diameters of the limiting hole 211 and the mounting hole 110; to meet the use requirements;
the T-shaped pin may be installed at a side of the fixing plate 210 far from the push bar 100;
when an operator performs specific operation, the operator pushes the pin rod towards the direction close to the fixing plate 210 until the pin rod sequentially passes through the limiting hole 211 on the fixing plate 210 and the mounting hole 110 on the push rod 100, and the T-shaped bolt is locked to fix the push rod 100;
or, the T-shaped bolt is installed at one side of the push rod far away from the fixing plate 210;
when an operator performs specific operation, the operator pushes the pin rod towards the direction close to the push rod 100 until the pin rod sequentially passes through the mounting hole 110 on the push rod 100 and the limiting hole 211 on the fixing plate 210, and the T-shaped bolt is locked to fix the push rod 100;
in this embodiment, the T-shaped pin is installed on the side of the push rod away from the fixing plate 210;
in addition, the T-shaped bolt is used for fixing the pushing rod 100 on the fixing plate 210 in order to prevent the bottom plate 430 from moving when the windproof cross rod supporting member 400 is in a closed state, so that the mounting positions of the T-shaped bolt, the fixing plate 210 and the pushing rod 100 should be matched, and the mounting position of the T-shaped bolt does not influence the vertical movement of the pushing rod 100 corresponding to the fixing plate 210; when the push rod 100 and the fixing plate 210 need to be fixed, the pin rod can simultaneously penetrate through the mounting hole 110 and the limiting hole 211;
preferably, as shown in fig. 1 and 2, the handle 120 for pushing the push rod 100 is further installed at the hand-held end of the push rod 100;
the handle 120 can be mounted on the hand-held end of the push rod 100 by welding or gluing; the handle 120 may be a ring or rod structure for easy use by the operator;
when the windproof cross rod 600 needs to be additionally arranged, an operator pushes the push rod 100 to drive the bottom plate 430 to rotate to abut against the free side plate 420, so that the accommodating groove 440 for accommodating the windproof cross rod 600 is formed, and at the moment, the pin rod penetrates through the mounting hole 110 and the limiting hole 211 and locks the T-shaped bolt; the push rod 100 is fixed on the fixing plate 210; when an emergency occurs, the T-shaped bolt is unlocked, the pin rod leaves the mounting hole 110 and the limiting hole 211, the push rod 100 can move, the bottom plate 430 rotates in the direction away from the free side plate 420 under the action of gravity, and the windproof cross rod 600 falls to the ground from the opening;
specifically, as shown in fig. 3 and 4, another embodiment of the present invention provides a wind door prevention mechanism, including: the door body 500, the windproof cross rod 600 and the windproof cross rod tripping device provided by the first embodiment of the utility model;
the wind-proof rail support 400 is installed on an end surface of the door body 500 facing outdoors
The fixing member 200 is installed at one end surface of the door body 500 facing the indoor;
the door body 500 is provided with a communication hole for the push rod 100 to pass through;
the windproof cross rod 600 is placed in the accommodating groove 440;
preferably, as shown in fig. 3 and 4, the number of the wind-proof cross bar tripping devices is four; the two windproof cross rod tripping devices are arranged on one side of the door body 500 from top to bottom; the other two windproof cross rod tripping devices are symmetrically arranged on the other side of the door body 500;
the number of the windproof cross bars 600 is two; one wind crossbar 600 is positioned between the other wind crossbar 600 and the ground.
Considering that the size of the double-leaf door is large, when the wind-proof cross bar 600 is additionally arranged in the transformer substation, the wind-proof cross bar 600 is required to be respectively arranged at the upper part and the lower part of the door body 500;
the number of the windproof cross rod tripping devices is four, and the two windproof cross rod tripping devices are arranged on one side of the door frame; the other two windproof cross rod tripping devices are symmetrically arranged on the other side of the door frame; so that the upper and lower wind-proof cross bars 600 can be horizontally placed in the receiving groove 440 of the wind-proof cross bar supporting member 400.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a prevent wind horizontal pole trip gear which characterized in that includes: the device comprises a push rod, a fixed component, a lockset and a windproof cross rod supporting piece;
the windproof cross rod supporting piece comprises a connecting side plate, a free side plate and a bottom plate; one end of the bottom plate is rotatably connected with one end of the connecting side plate close to the ground; when the bottom plate rotates to a horizontal position, the other end of the bottom plate is abutted with one end, close to the ground, of the free side plate to form a containing groove for containing the windproof cross rod;
one end of the push rod is a handheld end, and the other end of the push rod is connected with the bottom plate;
the pushing rod can drive the bottom plate to rotate towards the direction far away from the windproof cross rod, so that the windproof cross rod is separated from the windproof cross rod supporting piece under the action of the self gravity;
the fixing member is connected with the push rod through the lock.
2. The wind break bar trip unit of claim 1, wherein said stationary member comprises a stationary plate; the fixed plate is connected with the push rod through the lockset.
3. The wind-resistant cross bar trip unit of claim 2, wherein a plurality of limiting holes are provided on the fixing plate; the lock penetrates through the limiting hole to fix the push rod and the fixing plate.
4. The wind-resistant cross bar trip unit of claim 3, wherein said push bar is provided with a plurality of mounting holes; the lock penetrates through the mounting hole and the limiting hole to fix the push rod and the fixing plate.
5. The wind break bar trip unit of claim 4, wherein said limiting holes are evenly distributed along the length of said fixed plate; the mounting holes are uniformly distributed along the length direction of the push rod.
6. The wind-resistant cross bar trip unit of claim 1, wherein a handle is further mounted to the hand-held end of the push bar for pushing the push bar.
7. The wind break bar trip unit of claim 1, wherein said lock comprises a T-bolt.
8. The wind-resistant crossbar trip unit of claim 1 wherein said push rod is welded or hinged to said base plate.
9. The utility model provides a prevent wind double door mechanism prevent wind door mechanism one kind and prevent wind door mechanism which characterized in that includes: a door body, a wind break rail and the wind break rail trip unit of any one of claims 1-8;
the windproof cross rod supporting piece is arranged on one end face of the door body facing outdoors;
the fixed component is arranged on one end surface of the door body facing the interior of the room;
the door body is provided with a communicating hole for the push rod to pass through;
the windproof cross rod is placed in the accommodating groove.
10. The weatherproof door mechanism of claim 9, wherein the weatherproof crossbar trip units are provided in the number of four; the two windproof cross rod tripping devices are arranged on one side of the door body from top to bottom; the other two windproof cross rod tripping devices are symmetrically arranged on the other side of the door body; the number of the windproof transverse rods is two; one wind-proof cross rod is positioned between the other wind-proof cross rod and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087121.0U CN210049796U (en) | 2018-12-11 | 2018-12-11 | Prevent wind horizontal pole trip gear and prevent wind door mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087121.0U CN210049796U (en) | 2018-12-11 | 2018-12-11 | Prevent wind horizontal pole trip gear and prevent wind door mechanism |
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| CN210049796U true CN210049796U (en) | 2020-02-11 |
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| CN201822087121.0U Active CN210049796U (en) | 2018-12-11 | 2018-12-11 | Prevent wind horizontal pole trip gear and prevent wind door mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691798A (en) * | 2020-07-01 | 2020-09-22 | 杜涛 | Be used for effectual protection device of family's anti-broken door |
-
2018
- 2018-12-11 CN CN201822087121.0U patent/CN210049796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691798A (en) * | 2020-07-01 | 2020-09-22 | 杜涛 | Be used for effectual protection device of family's anti-broken door |
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