CN116575813A - Supporting device and method of use of a flip-out aircraft emergency door - Google Patents
Supporting device and method of use of a flip-out aircraft emergency door Download PDFInfo
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- CN116575813A CN116575813A CN202310637114.6A CN202310637114A CN116575813A CN 116575813 A CN116575813 A CN 116575813A CN 202310637114 A CN202310637114 A CN 202310637114A CN 116575813 A CN116575813 A CN 116575813A
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
- E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
- E05C17/30—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing of extensible, e.g. telescopic, construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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Abstract
一种外翻式飞机应急门的支撑装置及使用方法，所述支撑装置含有止动接头、止动块、支撑杆和固定支座，所述的止动接头固定在飞机机体上，所述的止动块固定在应急门的内侧，所述支撑杆是一个伸缩结构，支撑杆的前端设有与止动块匹配的支撑头，支撑杆后端铰接在固定支座上，该固定支座与止动接头可拆卸连接。
A support device and method of use of an eversion-type aircraft emergency door, the support device includes a stop joint, a stop block, a support rod and a fixed support, the stop joint is fixed on the aircraft body, and the The stop block is fixed on the inner side of the emergency door. The support rod is a telescopic structure. The front end of the support rod is provided with a support head matching the stop block. The stop joint is detachably connected.
Description
技术领域technical field
本发明属于飞机装配自动化技术领域，具体是一种飞机装配过程中外翻式应急门的支撑装置及使用方法。The invention belongs to the technical field of aircraft assembly automation, and in particular relates to a support device and a using method of an eversion-type emergency door during the aircraft assembly process.
背景技术Background technique
应急门，又称安全门，是飞机上的一个重要安全出口，用于飞机遇到紧急情况时帮助乘客逃生的重要安全出口。民用客机的应急门位于位于左右两侧机翼上方,中机身两侧。民航客机上应急门中最常见的结构形式为外翻式结构，目前外翻式应急门在机身上的调试过程中，首先需要先将应急门向上打开至一定角度后并固定，然后操作人员在机身门框周围区域安装止动接头。目前应急门在机身上打开至一定角度后并固定的过程中通常使用同等长度的木棍进行支撑，支撑角度需求不同时，需要选取不同长度的木棍进行支撑。支撑方式不仅效率低下，而且不可靠不安全，对于飞机装配效率及产品质量、人员安全等方面均存在较大影响。在质量和安全要求不断提升的大趋势下，急需一种应急门支撑装置来经济、高效的完成飞机应急门调试过程中的支撑工作。The emergency door, also known as the safety door, is an important safety exit on the plane, which is used to help passengers escape when the plane encounters an emergency. The emergency doors of civil airliners are located above the wings on the left and right sides, on both sides of the fuselage. The most common structural form of emergency doors on civil aviation airliners is the outward-turning structure. At present, during the debugging process of the outward-turning emergency doors on the fuselage, it is first necessary to open the emergency door upwards to a certain angle and fix it, and then the operator Install stop fittings in the area around the fuselage door frame. At present, when the emergency door is opened to a certain angle on the fuselage and fixed, wooden sticks of the same length are usually used for support. When the support angle requirements are different, wooden sticks of different lengths need to be selected for support. The support method is not only inefficient, but also unreliable and unsafe, which has a great impact on aircraft assembly efficiency, product quality, and personnel safety. Under the general trend of continuous improvement of quality and safety requirements, there is an urgent need for an emergency door support device to economically and efficiently complete the support work during the debugging process of aircraft emergency doors.
发明内容Contents of the invention
本发明专利的目的是针对现有的上述问题，提供一种在飞机装配阶段外翻式应急门调试过程中的支撑装置及使用方法。以解决传统使用木棍进行支撑效率低下、可靠性差、安全性低等一系列问题，以达到优化工艺方法，提高装配效率，提高人员操作安全等目的。The purpose of the patent of the present invention is to provide a support device and a method of use in the debugging process of an inside-out emergency door in the aircraft assembly stage in order to solve the existing above-mentioned problems. To solve a series of problems such as low efficiency, poor reliability and low safety of traditional use of wooden sticks for support, in order to achieve the purpose of optimizing the process method, improving assembly efficiency, and improving personnel operation safety.
一种外翻式飞机应急门的支撑装置，其特征在于，所述支撑装置含有止动接头、止动块、支撑杆和固定支座，所述的止动接头固定在飞机机体上，所述的止动块固定在应急门的内侧，所述支撑杆是一个伸缩结构，支撑杆的前端设有与止动块匹配的支撑头，支撑杆后端铰接在固定支座上，该固定支座与止动接头可拆卸连接。A support device for an eversion-type aircraft emergency door, characterized in that the support device contains a stop joint, a stop block, a support rod and a fixed support, and the stop joint is fixed on the aircraft body, and the The stop block is fixed on the inner side of the emergency door, the support rod is a telescopic structure, the front end of the support rod is provided with a support head matching the stop block, and the rear end of the support rod is hinged on the fixed support, the fixed support Removable connection with stop joint.
所述的外翻式飞机应急门的支撑装置，其特征在于，所述支撑杆含有支撑头、第一螺杆、套筒和第二螺杆，所述的支撑头为U形块，该U形块与止动块外形相互匹配，用于紧贴止动块的止动面，支撑头固定在第一螺杆前端，第一螺杆后端与套筒前端内螺纹螺接，第二螺杆前端与套筒后端内螺纹螺接，套筒前端内螺纹与套筒后端内螺纹方向相反，在套筒上设有转动把手，第二螺杆后端铰接在固定支座的连接叉耳上，转动套筒可以改变支撑杆的长度。The support device for the ever-turning aircraft emergency door is characterized in that the support rod contains a support head, a first screw, a sleeve and a second screw, and the support head is a U-shaped block, and the U-shaped block It matches the shape of the stop block and is used to cling to the stop surface of the stop block. The support head is fixed on the front end of the first screw, the rear end of the first screw is screwed with the inner thread of the front end of the sleeve, and the front end of the second screw is connected to the sleeve The internal thread at the rear end is screwed, the internal thread at the front end of the sleeve is in the opposite direction to the internal thread at the rear end of the sleeve, a rotating handle is provided on the sleeve, the rear end of the second screw is hinged on the connecting fork lug of the fixed support, and the sleeve is rotated The length of the support rod can be changed.
所述的外翻式飞机应急门的支撑装置，其特征在于，所述的固定支座为一C字型结构金属块，其包含定位面、压紧面和连接叉耳，定位面、压紧面平行对应，有一个压紧杆垂直螺纹连接在压紧面上，压紧杆前端的压紧头指向定位面，压紧杆后端有压紧把手，所述定位面上有定位槽，该定位槽与止动接头上的止动耳块匹配，止动耳块可以镶嵌在定位槽内，压紧杆的压紧头可以将止动耳块压紧在定位槽内，用于将固定支座与止动接头可拆卸连接。The support device for the ever-turning aircraft emergency door is characterized in that the fixed support is a metal block with a C-shaped structure, which includes a positioning surface, a pressing surface and connecting fork ears, and the positioning surface, pressing surface The surfaces are parallel to each other. There is a compression rod vertically threaded on the compression surface. The compression head at the front end of the compression rod points to the positioning surface. There is a compression handle at the rear end of the compression rod. There is a positioning groove on the positioning surface. The positioning groove matches the stop ear piece on the stop joint, the stop ear piece can be embedded in the positioning groove, and the compression head of the compression rod can compress the stop ear piece in the positioning groove, which is used for fixing the support The seat is detachably connected with the stop joint.
一种外翻式飞机应急门的支撑方法，其特征在于包含以下内容：1)使用上述的外翻式飞机应急门的支撑装置；2)操作人员旋转转动把手，使得第一螺杆和第二螺杆向套筒内收缩，当第一螺杆和第二螺杆收缩至最小位置时，停止旋转转动把手，此时应急门支撑杆长度处于最小状态；3)将止动接头的止动耳块镶嵌在支撑杆后端固定支座的定位面上，转动压紧杆的压紧把手，用压紧头将止动耳块压紧在定位面上进行固定，使支撑杆固定支座与止动接头固定连接；4)向外打开应急门，将固定在应急门内侧的止动块卡接在支撑杆前端的U型支撑头上；5)反向转动套筒上转动把手，使得第一螺杆和第二螺杆向套筒外延伸，直到支撑杆的长度满足应急门的打开角度为止；6)应急门支撑工序结束时，反向转动连接座上的压紧杆，将支撑杆的连接座与机体上的止动接头分离，再将支撑杆前端的支撑头与应急门上的止动块分离，关闭应急门即可。A support method for an inside-out aircraft emergency door, which is characterized in that it includes the following content: 1) using the above-mentioned support device for an inside-out aircraft emergency door; 2) the operator rotates the handle so that the first screw and the second screw Shrink into the sleeve, when the first screw rod and the second screw rod shrink to the minimum position, stop rotating and turning the handle, at this time the length of the emergency door support rod is at the minimum state; 3) embed the stop ear piece of the stop joint on the On the positioning surface of the fixed support at the rear end of the rod, turn the compression handle of the compression rod, and press the stop ear block on the positioning surface with the compression head to fix it, so that the support rod fixed support is fixedly connected with the stop joint ; 4) Open the emergency door outward, and clamp the stop block fixed on the inside of the emergency door on the U-shaped support head at the front end of the support rod; 5) Turn the handle on the reverse rotation sleeve so that the first screw and the second The screw rod extends out of the sleeve until the length of the support rod meets the opening angle of the emergency door; 6) When the emergency door support process ends, reversely rotate the pressing rod on the connecting seat to connect the connecting seat of the supporting rod to the The stop joint is separated, and then the support head at the front end of the support rod is separated from the stop block on the emergency door, and the emergency door can be closed.
本发明的有益效果在于：The beneficial effects of the present invention are:
1)本发明通过选取飞机结构中止动接头作为支撑点，支撑装置一端连接机身门框上止动接头，另一端连接应急门上止动块，从而对开启状态下的应急门进行支撑。同时该支撑装置长度可调，可以满足多角度应急门开启状态下的支撑需求。1) The present invention selects the stop joint in the aircraft structure as a support point, and one end of the support device is connected to the stop joint on the fuselage door frame, and the other end is connected to the stop block on the emergency door, thereby supporting the emergency door in the open state. At the same time, the length of the support device is adjustable, which can meet the support requirements when the multi-angle emergency door is opened.
2)使用支撑装置不仅结构简单、操作方便，同时达到优化工艺方法，提高装配效率，提高人员操作安全等目的。2) The use of the support device not only has a simple structure and is convenient to operate, but also achieves the purposes of optimizing the process method, improving assembly efficiency, and improving personnel operation safety.
3)使用支撑装置不仅减轻了操作人员的劳动强度，而且改善了其工作环境，解决了传统方法中使用木棍进行支撑效率低下、可靠性差、安全性低等一系列问题。3) The use of the support device not only reduces the labor intensity of the operator, but also improves its working environment, and solves a series of problems such as low efficiency, poor reliability, and low safety of using wooden sticks for support in the traditional method.
以下结合实施例附图对本申请发明作进一步详细描述：Below in conjunction with embodiment accompanying drawing, the invention of the present application is described in further detail:
附图说明Description of drawings
图1为外翻式飞机应急门的支撑方法示意图。Fig. 1 is a schematic diagram of a support method for an inside-out aircraft emergency door.
图2为支撑杆结构示意图。Figure 2 is a schematic diagram of the support rod structure.
图3为连接座结构示意图。Figure 3 is a schematic diagram of the structure of the connecting seat.
图4为连接座与止动接头连接关系示意图。Fig. 4 is a schematic diagram of the connection relationship between the connection seat and the stop joint.
图5为支撑杆与止动块连接关系示意图。Fig. 5 is a schematic diagram of the connection relationship between the support rod and the stop block.
图中编号说明：1-支撑头、2-第一螺杆、3-销钉、4-套筒、5-转动把手、6-第二螺杆、7-连接轴、8-固定支座、9-压紧头、10-压紧把手、11-压紧杆、12-止动接头、13-机身门框、14-止动块、15-应急门、16-连接叉耳、17-定位面、18-压紧面、19-止动耳块。Description of numbers in the figure: 1-support head, 2-first screw rod, 3-pin, 4-sleeve, 5-rotating handle, 6-second screw rod, 7-connecting shaft, 8-fixed support, 9-pressure Tight head, 10-compression handle, 11-compression rod, 12-stop joint, 13-body frame, 14-stop block, 15-emergency door, 16-connecting fork lug, 17-positioning surface, 18 -pressing surface, 19-stop ear piece.
具体实施方式Detailed ways
为使本发明专利的目的、方案更加清楚，结合本申请实例中的说明书附图，对本申请实例中的技术方案进行清楚详细的描述。In order to make the purpose and solution of the patent of the present invention clearer, the technical solutions in the examples of the application are clearly and detailedly described in combination with the accompanying drawings in the examples of the application.
一种外翻式飞机应急门的支撑装置，所述支撑装置含有止动接头12、止动块14、支撑杆和固定支座8，所述的止动接头12固定在飞机机体的机身门框13上，所述的止动块14固定在应急门15的内侧两边，所述支撑杆是一个伸缩结构，支撑杆的前端设有与止动块14匹配的支撑头1，支撑杆后端铰接在固定支座8上，该固定支座8与止动接头12之间可拆卸连接。A support device for an eversion-type aircraft emergency door, the support device includes a stop joint 12, a stop block 14, a support rod and a fixed support 8, and the stop joint 12 is fixed on the fuselage door frame of the aircraft body 13, the stop block 14 is fixed on both sides of the inner side of the emergency door 15, the support rod is a telescopic structure, the front end of the support rod is provided with a support head 1 matching the stop block 14, and the rear end of the support rod is hinged On the fixed support 8 , the fixed support 8 is detachably connected to the stop joint 12 .
实施例中，所述支撑杆含有支撑头1、第一螺杆2、套筒4和第二螺杆6，所述的支撑头1为U形块，该U形块与止动块14外形相互匹配，用于紧贴止动块14的止动面，支撑头1通过销钉3固定在第一螺杆2前端，第一螺杆2后端与套筒4前端内螺纹螺接，第二螺杆6前端与套筒4后端内螺纹螺接，套筒4前端内螺纹与套筒后端内螺纹方向相反，在套筒4上设有转动把手5，套筒4上还有用于减重的开口，第二螺杆6后端通过连接轴7铰接在固定支座8的连接叉耳16上，转动套筒4可以改变支撑杆的长度，实现支撑杆的伸缩功能。如图2所示。In the embodiment, the support rod includes a support head 1, a first screw 2, a sleeve 4 and a second screw 6, the support head 1 is a U-shaped block, and the shape of the U-shaped block and the stop block 14 match each other , used to be close to the stop surface of the stop block 14, the support head 1 is fixed on the front end of the first screw rod 2 through the pin 3, the rear end of the first screw rod 2 is screwed with the internal thread of the front end of the sleeve 4, and the front end of the second screw rod 6 is connected to the front end of the sleeve 4. The internal thread at the rear end of the sleeve 4 is screwed, and the internal thread at the front end of the sleeve 4 is in the opposite direction to the internal thread at the rear end of the sleeve. A rotating handle 5 is provided on the sleeve 4. There is also an opening for weight reduction on the sleeve 4. The rear ends of the two screw rods 6 are hinged on the connecting fork lug 16 of the fixed support 8 through the connecting shaft 7, and the rotating sleeve 4 can change the length of the supporting rod to realize the telescopic function of the supporting rod. as shown in picture 2.
实施中，所述的固定支座8为一C字型结构金属块，其包含定位面17、压紧面18和连接叉耳16，连接叉耳16为一双耳式结构，其上开有一通孔，通孔直径与连接轴7匹配，第二螺杆6与固定支座8通过连接轴7相互连接，形成转动关系。所述定位面17、压紧面18平行对应，有一个压紧杆11垂直螺纹连接在压紧面18上，压紧杆11前端的压紧头9指向定位面17，压紧杆11后端有压紧把手10，所述定位面17上有定位槽，该定位槽与止动接头12上的止动耳块19匹配，止动耳块19可以镶嵌在定位槽内，压紧杆11的压紧头9可以将止动耳块19压紧在定位槽内，用于将固定支座8与止动接头12可拆卸连接。如图3、图4所示。In practice, the fixed support 8 is a metal block with a C-shaped structure, which includes a positioning surface 17, a pressing surface 18 and a connecting fork ear 16. The connecting fork ear 16 is a double-eared structure, and a hole is opened on it. The diameter of the through hole matches the connecting shaft 7, and the second screw rod 6 and the fixed support 8 are connected to each other through the connecting shaft 7 to form a rotational relationship. The positioning surface 17 and the pressing surface 18 correspond in parallel, and a pressing rod 11 is vertically threaded on the pressing surface 18. The pressing head 9 at the front end of the pressing rod 11 points to the positioning surface 17, and the rear end of the pressing rod 11 There is a compression handle 10, a positioning groove is arranged on the positioning surface 17, and the positioning groove is matched with the stop ear piece 19 on the stop joint 12, and the stop ear piece 19 can be embedded in the positioning groove. The pressing head 9 can press the stop lug 19 into the positioning groove, and is used for detachably connecting the fixed support 8 with the stop joint 12 . As shown in Figure 3 and Figure 4.
使用本申请的支撑装置对飞机应急门外翻支撑的具体操作如下：The specific operation of using the supporting device of the application to support the aircraft emergency door eversion is as follows:
将止动接头12固定在飞机的机身门框13上，将止动块14固定在应急门15的内侧边上。The stop joint 12 is fixed on the fuselage door frame 13 of the aircraft, and the stop block 14 is fixed on the inner side of the emergency door 15 .
对应急门外翻支撑时，首先应急门调整支撑杆的长度，操作人员旋转转动把手5，使得第一螺杆2和第二螺杆6向套筒4内收缩，当第一螺杆2和第二螺杆6收缩至最小位置时，停止旋转转动把手5，此时应急门支撑杆长度处于最小状态。When supporting the emergency door eversion, first adjust the length of the support rod for the emergency door, and the operator rotates the handle 5, so that the first screw 2 and the second screw 6 shrink inward to the sleeve 4, when the first screw 2 and the second screw 6. When shrinking to the minimum position, stop rotating the handle 5, and now the length of the emergency door support rod is in the minimum state.
再将止动接头12的止动耳块19镶嵌在支撑杆后端固定支座8的定位面17上，转动压紧杆11的压紧把手10，带动压紧头9将止动耳块19压紧在固定支座8的定位面17上进行固定，使支撑杆固定支座8与止动接头12固定连接，如图4所示。Then the stop ear piece 19 of the stop joint 12 is inlaid on the positioning surface 17 of the fixed bearing 8 at the rear end of the support rod, the compression handle 10 of the rotation compression rod 11 drives the compression head 9 to press the stop ear piece 19 Press and fix on the positioning surface 17 of the fixed support 8, so that the support rod fixed support 8 is fixedly connected with the stop joint 12, as shown in FIG. 4 .
向外打开应急门15，将固定在应急门内侧的止动块14卡接在支撑杆前端的U型支撑头1上；此时应急门被支撑打开的角度最小。如果需要更大角度的打开应急门，反向转动套筒4上得转动把手5，使得第一螺杆2和第二螺杆6向套筒4外延伸，延伸支撑杆的长度，直到支撑杆的长度满足应急门15的打开角度为止。最后，应急门支撑工序结束时，反向转动连接座8上的压紧杆11，将支撑杆的连接座8与机体上的止动接头12分离，再将支撑杆前端的支撑头1与应急门15上的止动块14分离，关闭应急门即可。Open the emergency door 15 outwards, and clamp the stop block 14 fixed on the inner side of the emergency door to the U-shaped support head 1 at the front end of the support rod; at this time, the angle at which the emergency door is supported to open is the smallest. If you need to open the emergency door at a larger angle, turn the handle 5 on the sleeve 4 in the opposite direction, so that the first screw rod 2 and the second screw rod 6 extend out of the sleeve 4, extending the length of the support rod until the length of the support rod until the opening angle of the emergency door 15 is satisfied. Finally, when the emergency door support process ends, reversely rotate the compression rod 11 on the connecting seat 8 to separate the connecting seat 8 of the supporting rod from the stop joint 12 on the body, and then connect the supporting head 1 at the front end of the supporting rod to the emergency The stop block 14 on the door 15 is separated, and the emergency door can be closed.
在本申请描述中，需要说明的是，附图中提供的实施案例并非为本发明专利要求保护的全部范围内，仅表示本发明专利选取的一部结构形式。本领域技术人员可以对本发明专利进行各种改动或改进，在没有作出创造性改进的前提下所获得所有其他实施案例，均属于本发明专利申请的保护范围。In the description of this application, it should be noted that the implementation examples provided in the drawings do not cover the entire scope of protection claimed by the patent of the present invention, but only represent a part of the structural form selected by the patent of the present invention. Those skilled in the art can make various changes or improvements to the patent of the present invention, and all other implementation cases obtained without making creative improvements belong to the protection scope of the patent application of the present invention.
本发明专利结构形式简单，造价成本低、操作简单，有效解决了现有飞机部件装配中应急门调试过程中支撑方式效率低下、可靠性差、安全性低等一系列问题，以达到优化工艺方法，提高装配效率，提高人员操作安全等目的。在飞机部件装配中可普遍应用，具有一定的推广价值。The patented structure of the invention is simple, low in cost and simple in operation, and effectively solves a series of problems such as low efficiency, poor reliability and low safety of the support mode in the emergency door debugging process in the assembly of existing aircraft components, so as to achieve an optimized process method, Improve assembly efficiency, improve personnel operation safety and other purposes. It can be widely used in the assembly of aircraft parts and has certain promotional value.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310637114.6A CN116575813A (en) | 2023-05-31 | 2023-05-31 | Supporting device and method of use of a flip-out aircraft emergency door |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310637114.6A CN116575813A (en) | 2023-05-31 | 2023-05-31 | Supporting device and method of use of a flip-out aircraft emergency door |
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| CN202310637114.6A Pending CN116575813A (en) | 2023-05-31 | 2023-05-31 | Supporting device and method of use of a flip-out aircraft emergency door |
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| FR2123844A5 (en) * | 1971-01-27 | 1972-09-15 | Tabardel Robert | |
| JPH08177293A (en) * | 1994-12-20 | 1996-07-09 | Emoto Kogyo Kk | Open state keeper at window |
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| CN209620937U (en) * | 2018-09-06 | 2019-11-12 | 宁波市鄞州拙诚五金有限公司 | A kind of safety protective door dagger |
| CN213807134U (en) * | 2020-08-26 | 2021-07-27 | 济南瑞那斯门窗幕墙有限公司 | Angle limiting device for outward-opening glass window |
| US20210396055A1 (en) * | 2020-06-19 | 2021-12-23 | Becky Berenika Pesacov | Portable door lock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2123844A5 (en) * | 1971-01-27 | 1972-09-15 | Tabardel Robert | |
| JPH08177293A (en) * | 1994-12-20 | 1996-07-09 | Emoto Kogyo Kk | Open state keeper at window |
| CN208396506U (en) * | 2018-06-01 | 2019-01-18 | 云浮市中等专业学校 | A kind of automobile tail gate auxiliary support bar |
| CN209620937U (en) * | 2018-09-06 | 2019-11-12 | 宁波市鄞州拙诚五金有限公司 | A kind of safety protective door dagger |
| US20210396055A1 (en) * | 2020-06-19 | 2021-12-23 | Becky Berenika Pesacov | Portable door lock |
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