CN213510355U - Pet cat feeding protection window for high-rise residential building - Google Patents

Pet cat feeding protection window for high-rise residential building Download PDF

Info

Publication number
CN213510355U
CN213510355U CN202022369931.2U CN202022369931U CN213510355U CN 213510355 U CN213510355 U CN 213510355U CN 202022369931 U CN202022369931 U CN 202022369931U CN 213510355 U CN213510355 U CN 213510355U
Authority
CN
China
Prior art keywords
rod
mounting
locking
pet cat
residential building
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022369931.2U
Other languages
Chinese (zh)
Inventor
姜建波
孙鹏
许楠
纪丽丽
王菁男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Vocational Animal Science and Veterinary College
Original Assignee
Shandong Vocational Animal Science and Veterinary College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Vocational Animal Science and Veterinary College filed Critical Shandong Vocational Animal Science and Veterinary College
Priority to CN202022369931.2U priority Critical patent/CN213510355U/en
Application granted granted Critical
Publication of CN213510355U publication Critical patent/CN213510355U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model provides a pet cat raises protection window for high-rise residential building, including window frame and protector, each protector all includes two mount pads that are parallel to each other, be provided with a plurality of flexible members that set up side by side between two mount pads jointly, all be provided with a fine-tuning between the both ends of each mount pad and the corresponding flexible member, common fixed mounting has two installation connecting rods on whole flexible members, all is provided with a first locking mechanical system between the both ends of each installation connecting rod and the corresponding flexible member, be provided with a second locking mechanical system that is used for the locking on one of them flexible member, the utility model discloses can realize freely installing and dismantling, solve and need professional to install and the problem that installation cost is high, adopt retractable's mounting structure moreover, can adjust according to the window frame size, have that the suitability is strong, Easy dismounting, low installation cost.

Description

Pet cat feeding protection window for high-rise residential building
Technical Field
The utility model belongs to the technical field of the protection window technique and specifically relates to a pet cat raises protection window for high-rise residential building is related to.
Background
When a resident living in a high-rise residential building raises a pet cat, the pet cat is possibly separated from the house from the opened ventilating window and even falls off from the opened window carelessly, which is dangerous, so that a protection device needs to be installed at the opened window.
The prior protective window mainly has the following problems: the existing protective window is mainly characterized in that the protective railings are fixedly arranged outside the window, a professional is required to install the protective window, and the protective window cannot be disassembled after installation, so that the installation cost is high, gaps on the protective railings are large, and the protective window cannot play a role in protecting pet cats completely.
Therefore, there is a need for a pet cat feeding protection window for a high-rise residential building that can solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pet cat raises protection window for high-rise residential building can realize freely installing and dismantling, has solved and has needed the professional to install and the problem that installation cost is high, adopts the mounting structure of retractable moreover, can adjust according to the window frame size, has that the suitability is strong, easy dismounting, characteristics that installation cost is low.
The technical scheme of the utility model is realized like this:
a protection window is raised to pet cat for high-rise residential building, including the window frame, install the protector who is used for protecting pet cat on the window frame side by side, protector includes two and supports respectively lean on in mount pad on the wall of window frame both sides, two the mount pad is parallel to each other and sets up relatively, two be provided with a plurality of flexible members that set up side by side between the mount pad jointly, each the both ends of mount pad with correspond all be provided with a fine-tuning between the flexible member, whole common fixed mounting has two to be on a parallel with on the flexible member the installation connecting rod of mount pad, each the both ends of installation connecting rod with correspond all be provided with a first locking mechanical system between the flexible member, one of them be provided with a second locking mechanical system who is used for the locking on the flexible member.
As a preferred technical scheme, each flexible member all includes from interior to exterior sets gradually and slidable mounting is interior pole, king-rod and outer pole together, each outer pole all sets up in one of them mount pad is with adjacent between the installation connecting rod, each king-rod all sets up in two between the installation connecting rod, each interior pole all sets up with another the mount pad is with adjacent between the installation connecting rod.
As a preferred technical scheme, each fine-tuning all includes a slidable mounting in corresponding the adjusting collar of mount pad one end, each the one end of adjusting collar all passes and stretches out the mount pad, each the adjusting collar stretches out the one end of mount pad all is fixed with a fastening cushion, each the fastening cushion all is on a parallel with the mount pad leans on in the top on the lateral wall of window frame, each the other end of adjusting collar all is equipped with a screw thread mounting hole, each the screw thread mounting hole all with correspond the coaxial setting of flexible member, each equal threaded mounting has an adjusting lever in the screw thread mounting hole, each the adjusting lever all is fixed in and corresponds the tip of outer pole or the tip of interior pole.
As a preferred technical scheme, each first locking mechanism comprises a first open slot arranged on the side wall of one end of the mounting connecting rod, a horizontally arranged screw gasket is arranged in each first open slot, a fastening screw is arranged at each of the two ends of the mounting connecting rod in a threaded manner, the lower end of each fastening screw extends into the first open slot, the lower end of each fastening screw is arranged together with the corresponding screw gasket in a threaded manner, a connecting opening arranged on the side wall of the corresponding middle rod or outer rod is arranged below each first open slot, and each connecting opening is communicated with the first open slot.
As an optimal technical scheme, a pressing block abutting against the screw gasket is slidably mounted in each connecting opening, a positioning groove is formed in the top of each pressing block, the lower end of each fastening screw extends out of the screw gasket and is inserted into and corresponds to the positioning groove, an installation groove is formed in the inner side wall corresponding to the middle rod or the inner side wall corresponding to the outer rod, the position of each installation groove corresponds to the position of the connecting opening, an arc-shaped pressing pad fixed together with the pressing block is arranged in each installation groove, and the shape of each arc-shaped pressing pad is matched with the shape of the corresponding installation groove.
As an optimal technical scheme, second locking mechanical system is including setting up in corresponding second fluting on the interior pole, the second fluting set up in interior pole is close to the one end of mount pad, slidable mounting has a locking piece in the second fluting, the locking piece with a common fixedly connected with reset spring between the second fluting bottom corresponds be equipped with on the lateral wall of well pole one with the first trompil of locking piece looks adaptation corresponds be equipped with on the lateral wall of outer pole one with the second trompil of locking piece looks adaptation, the upper end of locking piece passes in proper order first trompil and second trompil stretch out the outside of outer pole.
As a preferred technical scheme, one end of each outer rod is fixed on the corresponding mounting seat or the corresponding adjusting rod, the other end of each outer rod is fixed on the corresponding mounting connecting rod, one end of each middle rod is slidably mounted in the corresponding outer rod, the other end of each middle rod is fixed on the corresponding mounting connecting rod, one end of the inner rod is slidably mounted in the corresponding middle rod, and the other end of the inner rod is fixed on the corresponding mounting seat or the corresponding adjusting rod.
By adopting the technical scheme, the beneficial effects of the utility model are that:
because the pet cat that is used for high-rise residential building raises protection window includes window frame and protector the utility model discloses in, the user can install protector in the window department of opening and protect the pet cat as required to avoid the pet cat to leave the house from the window of opening, the utility model discloses need not the professional, the user oneself just can install and dismantle, has reduced the installation cost of protection window.
Because the protective device comprises the mounting seat and a plurality of telescopic rod pieces, wherein one telescopic rod piece is provided with a second locking mechanism, when the protective device is used, a user firstly installs the protective device according to the requirement, the user firstly presses the locking block on the telescopic rod piece to move the locking block inwards and separate the locking block from a second open hole on the middle rod and the outer rod of the telescopic rod piece, the user can pull the corresponding mounting seat to pull out the outer rod of the telescopic rod piece outwards, then presses the locking block again to move the locking block inwards and separate the locking block from a first open hole on the middle rod of the telescopic rod piece, and the user pulls the mounting seat to pull out the middle rod outwards again to realize the expansion of the protective device; when the telescopic rod piece is unfolded to be approximately the same as the width of the window frame, the fastening screw is screwed by hands to enable the fastening screw to be screwed inwards, the fastening screw pushes the pressing block and the arc-shaped pressing pad to move towards the direction of the middle rod, the arc-shaped pressing pad abuts against the outer side wall of the corresponding middle rod or the outer rod, and locking of the positions between the inner rod and the middle rod and between the middle rod and the outer rod is achieved.
In the utility model, the protection device adopts a telescopic mounting structure, the width expanded by adjustment can be obtained according to the needs, when the telescopic rod piece is in a contraction state when the protection device is not used, the locking block in the second locking mechanism is inserted into the first open hole and the second open hole to lock the inner rod, the middle rod and the outer rod, thus the volume of the protection device can be reduced to be convenient for storage; expand flexible member again when using, the length that flexible member expanded can carry out free adjustment according to the width of window frame for protector can be applicable to not unidimensional window frame, has improved the utility model discloses an suitability.
Because the fine adjustment mechanism is arranged on the mounting seat, the utility model discloses in, after expanding and locking the telescopic rod piece, the user can lean on two mounting seats respectively on the both sides wall of window frame, then rotate the adjusting sleeve in the fine adjustment mechanism, move towards the direction of mounting seat place in the rotating process of adjusting sleeve, drive the fastening cushion to move and make the fastening cushion compress tightly on the lateral wall of window frame, firmly fix the protector on the window frame, realize the installation to the protector, in the utility model, the installation and the dismantlement operation of protector are all very simple, do not need the professional, the user oneself can operate, solved need the professional to install and the problem that the installation cost is high, reduced the utility model discloses an installation cost; the fastening rubber mat in the fine adjustment mechanism is made of rubber materials with larger friction force, a plurality of small protrusions can be arranged on the end portion of the fastening rubber mat, the friction force between the fastening rubber mat and the window frame is increased, fixing firmness and reliability between the protection device and the window frame are greatly improved, and relative sliding of the protection device on the window frame is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the protection device of the present invention;
fig. 3 is a schematic structural view of the protection device of the present invention in an expanded state;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic structural diagram of a second locking mechanism of the present invention.
Wherein: 1. a window frame; 2. a mounting seat; 3. a telescopic rod member; 4. installing a connecting rod; 5. an inner rod; 6. a middle rod; 7. an outer rod; 8. an adjusting sleeve; 9. fastening the rubber cushion; 10. a threaded mounting hole; 11. adjusting a rod; 12. a first slot; 13. a screw washer; 14. fastening screws; 15. a connection opening; 16. a compression block; 17. a positioning groove; 18. installing a groove; 19. an arc-shaped pressing pad; 20. a second slot; 21. a locking block; 22. a return spring; 23. a first opening; 24. and a second opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figures 1-3 together, the pet cat feeding protection window for the high-rise residential building comprises a window frame 1, wherein a protection device for protecting pet cats is arranged on the window frame 1 side by side, the protection device comprises two installation seats 2 respectively abutted against two side walls of the window frame 1, the two installation seats 2 are parallel and opposite to each other, a plurality of telescopic rod pieces 3 arranged side by side are arranged between the two installation seats 2, each telescopic rod piece 3 is perpendicular to the installation seat 2, a fine adjustment mechanism is arranged between two ends of each installation seat 2 and the corresponding telescopic rod piece 3, two installation connecting rods 4 parallel to the installation seats 2 are fixedly arranged on all the telescopic rod pieces 3 together, a first locking mechanism is arranged between two ends of each installation connecting rod 4 and the corresponding telescopic rod piece 3, and a second locking mechanism for locking is arranged on one telescopic rod piece 3, the utility model discloses in, protector's installation and dismantlement operation are all very simple, convenient, can accomplish protector's installation and dismantlement operation alone, can adjust protector's mounted position at any time according to the difference of opening the window moreover, need not install the whole room to very big reduction the installation cost of protection window.
Wherein, each flexible member 3 all includes from interior to exterior and sets gradually and slidable mounting is interior pole 5 together, well pole 6 and outer pole 7, and each outer pole 7 all sets up between one of them mount pad 2 and adjacent installation connecting rod 4, and each well pole 6 all sets up between two installation connecting rods 4, and each interior pole 5 all sets up with between another mount pad 2 and the adjacent installation connecting rod 4.
Furthermore, each fine adjustment mechanism comprises an adjusting sleeve 8 slidably mounted on one end of the corresponding mounting seat 2, one end of each adjusting sleeve 8 passes through and extends out of the mounting seat 2, one end of each adjusting sleeve 8 extending out of the mounting seat 2 is fixed with a fastening rubber pad 9, each fastening rubber pad 9 is parallel to the mounting seat 2 and abuts against the side wall of the window frame 1, the other end of each adjusting sleeve 8 is provided with a threaded mounting hole 10, each threaded mounting hole 10 is coaxially arranged with the corresponding telescopic rod member 3, an adjusting rod 11 is threadedly mounted in each threaded mounting hole 10, each adjusting rod 11 is fixed on the end of the corresponding outer rod 7 or the end of the corresponding inner rod 5, in the utility model, the fine adjustment mechanism is used for completely fixing the protection device, and after the two mounting seats 2 are respectively abutted against the two side walls of the window frame 1, the position of the fastening rubber pad 9 is adjusted by rotating the adjusting sleeve 8, make fastening cushion 9 tightly support to window frame 1 on, guarantee that protector can not take place to slide on window frame 1, improved the fixed reliability and the stability of protector.
As shown in fig. 4 and 5, each first locking mechanism includes a first slot 12 disposed on a side wall of one end of the mounting link 4, a horizontally disposed screw gasket 13 is disposed in each first slot 12, a fastening screw 14 is installed at each end of the mounting link 4 in a threaded manner, a lower end of each fastening screw 14 extends into the first slot 12, a lower end of each fastening screw 14 is installed in a threaded manner with the corresponding screw gasket 13, a connecting opening 15 disposed on a side wall of the corresponding middle rod 6 or the outer rod 7 is disposed below each first slot 12, and each connecting opening 15 is communicated with the first slot 12.
A pressing block 16 which is leaned against the screw gasket 13 is arranged in each connecting opening 15 in a sliding manner, a positioning groove 17 is arranged at the top of each pressing block 16, the lower end of each fastening screw 14 extends out of the screw gasket 13 and is inserted into the corresponding positioning groove 17, an installation groove 18 is arranged on the inner side wall of the middle rod 6 or the inner side wall of the outer rod 7, the position of each installation groove 18 corresponds to the position of the connecting opening 15, an arc-shaped pressing pad 19 which is fixed with the pressing block 16 is arranged in each installation groove 18, and the shape of each arc-shaped pressing pad 19 is matched with the shape of the corresponding installation groove 18. in the utility model, after the telescopic rod 3 is extended, the arc-shaped pressing pad 19 can be jacked to press against the side wall of the middle rod 6 or the inner rod 5 by screwing the fastening screw 14 inwards, so as to realize the connection between the inner rod 5 and the middle rod 6 in the telescopic rod 3, The middle rod 6 and the outer rod 7 are locked, and meanwhile, the arc-shaped pressing pad 19 is made of materials with large friction coefficients such as rubber and the like, so that the friction force between the arc-shaped pressing pad 19 and the middle rod 6 or the inner rod 5 is increased, and the locking reliability of the middle rod 6 or the inner rod 5 is improved.
As shown in fig. 6, the second locking mechanism includes a second slot 20 disposed on the corresponding inner rod 5, the second slot 20 is disposed at one end of the inner rod 5 close to the mounting seat 2, a locking block 21 is slidably mounted in the second slot 20, a common return spring 22 is fixedly connected between the bottom of the locking block 21 and the bottom of the second slot 20, a first opening 23 adapted to the locking block 21 is disposed on the side wall of the corresponding middle rod 6, a second opening 24 adapted to the locking block 21 is disposed on the side wall of the corresponding outer rod 7, the upper end of the locking block 21 sequentially passes through the first opening 23 and the second opening 24 and extends out of the outer rod 7, and in this embodiment, the return spring 22 is a compression spring.
In addition, the one end of each outer pole 7 all is fixed in corresponding mount pad 2 or adjust the pole 11 on, the other end of each outer pole 7 all is fixed in jointly corresponding on an installation connecting rod 4, the equal slidable mounting in the inside that corresponds outer pole 7 of one end of pole 6 in each, the other end of pole 6 all is fixed in jointly on another installation connecting rod 4 in each, the equal slidable mounting in the inside that corresponds pole 6 in one end of interior pole 5, the other end of pole 5 all is fixed in corresponding mount pad 2 or adjust the pole 11 in each.
To sum up, the utility model provides a pet cat raises protection window for high-rise residential building can realize freely installing and dismantling, has solved and has needed the professional to install and the problem that installation cost is high, adopts the mounting structure of retractable moreover, can adjust according to 1 size of window frame, has that the suitability is strong, easy dismounting, characteristics that installation cost is low.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A pet cat feeding protection window for high-rise residential building, a serial communication port, including the window frame, install the protector that is used for protecting pet cat on the window frame side by side, each protector all include two lean on respectively in mount pad on the wall of window frame both sides, two the mount pad is parallel to each other and relative setting, two be provided with a plurality of flexible members that set up side by side between the mount pad jointly, each the both ends of mount pad with correspond all be provided with a fine-tuning between the flexible member, whole common fixed mounting has two to be on a parallel with on the flexible member the installation connecting rod of mount pad, each the both ends of installation connecting rod with correspond all be provided with a first locking mechanical system, one of them be provided with a second locking mechanical system who is used for the locking on the flexible member.
2. The pet cat feeding protection window for the high-rise residential building as claimed in claim 1, wherein each of the telescopic rod members comprises an inner rod, a middle rod and an outer rod which are arranged in sequence from inside to outside and slidably mounted together, each of the outer rods is arranged between one of the mounting seats and the adjacent mounting connecting rod, each of the middle rods is arranged between two of the mounting connecting rods, and each of the inner rods is arranged between the other one of the mounting seats and the adjacent mounting connecting rod.
3. The pet cat feeding protection window for the high-rise residential building as claimed in claim 2, wherein each fine adjustment mechanism comprises an adjusting sleeve slidably mounted at an end of the corresponding mounting seat, one end of each adjusting sleeve passes through and extends out of the mounting seat, one end of each adjusting sleeve extending out of the mounting seat is fixed with a fastening rubber pad, each fastening rubber pad is parallel to the mounting seat and abuts against the side wall of the window frame, the other end of each adjusting sleeve is provided with a threaded mounting hole, each threaded mounting hole is coaxially arranged with the corresponding telescopic rod, an adjusting rod is threadedly mounted in each threaded mounting hole, and each adjusting rod is fixed at an end of the corresponding outer rod or an end of the corresponding inner rod.
4. The pet cat feeding protection window for the high-rise residential building as claimed in claim 2, wherein each of said first locking mechanisms includes a first slot formed in a side wall of one end of said mounting link, a horizontally disposed screw washer is disposed in each of said first slots, a fastening screw is threadedly mounted at each of two ends of each of said mounting links, a lower end of each of said fastening screws extends into said first slot, a lower end of each of said fastening screws is threadedly mounted to a corresponding one of said screw washers, a connection opening is disposed below each of said first slots and is disposed on a side wall of a corresponding one of said middle pole and said outer pole, and each of said connection openings is in communication with said first slot.
5. The pet cat feeding protection window for the high-rise residential building as claimed in claim 4, wherein a pressing block abutting against the screw gasket is slidably installed in each of the connection openings, a positioning groove is formed in the top of each of the pressing blocks, the lower end of each of the fastening screws extends out of the screw gasket and is inserted into the corresponding positioning groove, an installation groove is formed in the inner side wall corresponding to the middle rod or the outer rod, the position of each of the installation grooves corresponds to the position of the connection opening, an arc-shaped pressing pad fixed with the pressing block is arranged in each of the installation grooves, and the shape of each of the arc-shaped pressing pads is matched with the shape of the corresponding installation groove.
6. The pet cat feeding protection window for the high-rise residential building as claimed in claim 2, wherein the second locking mechanism comprises a second slot disposed on the corresponding inner rod, the second slot is disposed at one end of the inner rod close to the mounting seat, a locking block is slidably mounted in the second slot, a return spring is fixedly connected between the locking block and the bottom of the second slot, a first hole corresponding to the locking block is formed in the side wall of the middle rod, a second hole corresponding to the locking block is formed in the side wall of the outer rod, the upper end of the locking block sequentially penetrates through the first hole and the second hole and extends out of the outer rod.
7. The pet cat feeding protection window for the high-rise residential building as claimed in claim 3, wherein one end of each of said outer rods is fixed to the corresponding mounting seat or adjusting rod, the other end of each of said outer rods is fixed to the corresponding mounting link rod, one end of each of said middle rods is slidably mounted inside the corresponding outer rod, the other end of each of said middle rods is fixed to the other mounting link rod, one end of said inner rod is slidably mounted inside the corresponding middle rod, and the other end of each of said inner rods is fixed to the corresponding mounting seat or adjusting rod.
CN202022369931.2U 2020-10-22 2020-10-22 Pet cat feeding protection window for high-rise residential building Active CN213510355U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022369931.2U CN213510355U (en) 2020-10-22 2020-10-22 Pet cat feeding protection window for high-rise residential building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022369931.2U CN213510355U (en) 2020-10-22 2020-10-22 Pet cat feeding protection window for high-rise residential building

Publications (1)

Publication Number Publication Date
CN213510355U true CN213510355U (en) 2021-06-22

Family

ID=76401667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022369931.2U Active CN213510355U (en) 2020-10-22 2020-10-22 Pet cat feeding protection window for high-rise residential building

Country Status (1)

Country Link
CN (1) CN213510355U (en)

Similar Documents

Publication Publication Date Title
US4848432A (en) Mounting bracket for venetian blinds
US8851435B1 (en) Rod assembly with reversible locking device
US7690415B2 (en) Lifting control apparatus for window covering
US20120261371A1 (en) Window rods
US20140250584A1 (en) Shower door assembly
CN213510355U (en) Pet cat feeding protection window for high-rise residential building
CN203334865U (en) Furniture buffer and furniture hinge
CN213018779U (en) STB mounting structure
CN211511377U (en) A mounting bracket that punches exempts from for (window) curtain
CN104594578A (en) Combined moveable armrest
CN210643330U (en) Pedal adjusting and locking mechanism
CN211609095U (en) A installed part that punches exempts from for (window) curtain
CN112983954A (en) Split type curtain is with extending elastic pin
CN203160812U (en) Control buckle device applied to sliding mechanism
CN217080268U (en) Detachable grille window structure
CN220184486U (en) Combined protective railing
CN220359279U (en) Combined mounting seat
CN111478190A (en) Electric power cabinet convenient to dismouting
CN213541759U (en) Home security monitoring equipment
CN219782025U (en) Special-shaped chair back structure convenient for production, assembly and transportation
KR200456513Y1 (en) Safety guardrail for window
CN216210130U (en) Fiber distribution box convenient to install
CN219306573U (en) Storage rod assembly and bathroom mirror device
CN219100332U (en) Curtain built-in fitting
CN214506403U (en) Auxiliary bearing device for bridge frame

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant