CN110239471B - Window breaking device - Google Patents
Window breaking device Download PDFInfo
- Publication number
- CN110239471B CN110239471B CN201910525992.2A CN201910525992A CN110239471B CN 110239471 B CN110239471 B CN 110239471B CN 201910525992 A CN201910525992 A CN 201910525992A CN 110239471 B CN110239471 B CN 110239471B
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- Prior art keywords
- shell
- hammer
- rod
- operating
- connecting rod
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B3/00—Devices or single parts for facilitating escape from buildings or the like, e.g. protection shields, protection screens; Portable devices for preventing smoke penetrating into distinct parts of buildings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention provides a window breaker, which comprises a shell with a front opening and arranged transversely, wherein a plurality of symmetrical sliding chutes are arranged on two side walls of the shell; the hammer mechanism comprises a hammer body, a stop block, a plurality of springs, a hammer tip body is extended from the front end of the hammer body, a hammer rod is extended from the rear end of the hammer body, the hammer mechanism further comprises a clamping head, a rotating body and an elastic sheet, the clamping head is located on two side walls of a shell, the two side walls of the hammer body are in sliding fit with a sliding groove located in the middle of the shell, the hammer rod is arranged in one spring sleeve, a notch matched with a second connecting rod is formed in the top of the stop block, and one part of the stop block is embedded in the top of the shell and two. Compared with the prior art, the invention does not need to use components such as a motor and the like, so that the integral structure is more compact, the cost is low, the volume is small, the operation process is simple and practical, and the invention is more suitable for popularization and application.
Description
Technical Field
The invention belongs to the technical field of lifesaving equipment, and relates to a window breaker.
Background
In the prior art, for example, chinese patent CN201811139292.1 discloses a miniature electric motor vehicle window breaker, which includes a window breaking mechanism and a driving device, wherein the window breaking mechanism includes a metal striker, the driving device includes a first driving motor and a first cam driven by the first driving motor, and the first cam controls the metal striker to move to complete window breaking. It has the problems that: to above-mentioned patent realize broken window function, need combine to use drive arrangement, drive arrangement is first driving motor, that is to say need be with the help of parts such as motor, leads to overall structure not compact, cost increase, bulky, is unfavorable for popularizing and applying.
Therefore, the invention provides a window breaker.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a window breaker, when a user uses the window breaker of the present application, the user can hold the handle with one hand and pull the operating mechanism backward with the other hand to slide the second connecting rod in the chute, and use the stopper of the hammer mechanism to drive the hammer body to compress the spring backward, and release the hammer placed behind the hand of the operating mechanism, and move the cone toward the front opening of the housing under the restoring action of the spring, thereby implementing the window breaking function, without using components such as a motor, and making the whole structure more compact, low cost, small volume, simple and practical in operation process, and more suitable for popularization and application.
The purpose of the invention can be realized by the following technical scheme:
a window breaker comprises a shell which is provided with a front opening and is transversely arranged, wherein a plurality of symmetrical sliding chutes are arranged on two side walls of the shell, an operating mechanism is pivoted in one of the sliding chutes positioned on the upper part of the shell, a hammer mechanism is arranged in the shell, and a handle extends out of the side wall positioned at the bottom of the shell;
the sliding chute close to the top of the shell is provided with a first notch and a second notch connected with the first notch, the sliding chute close to the bottom of the shell is provided with a plurality of arc-shaped teeth, and each arc-shaped tooth is arranged at intervals along the radial direction;
the operating mechanism comprises an operating rod, a first connecting rod, a second connecting rod and two plate bodies, wherein two ends of the operating rod are respectively pivoted at the rear end of the side wall of the shell, two ends of the first connecting rod are pivoted on two side walls of the operating rod and are fixed with one end of each plate body, the second connecting rod is slidably sleeved in the first notch and the second notch, and the other end of each plate body is fixed with two ends of the second connecting rod which respectively extend out of the sliding groove;
the hammer mechanism comprises a hammer body, a stop block, a plurality of springs, a hammer body front end, a hammer tip body, a hammer rod and a hammer body rear end, the hammer mechanism further comprises a chuck, a rotating body and an elastic sheet, the chuck, the rotating body and the elastic sheet are located on two side walls of a shell, the two side walls of the hammer body are in sliding fit with a sliding groove located in the middle of the shell, the hammer rod is located in one spring sleeve, a notch matched with a second connecting rod is arranged at the top of the stop block, one part of the stop block is embedded in the top of the shell and two sides of the stop block are in rotating fit with the shell, the chuck and the elastic sheet are both arranged on the side wall of the shell, one end of the rotating body is sleeved with the chuck, the other.
As preferred technical scheme, the rotor includes the dwang, along the first ring that dwang one end was stretched out and along the second ring that the dwang other end was stretched out, the external diameter of first tourus is less than the external diameter of second ring, first tourus pin joint in on the dop lateral wall, second tourus pin joint is on the casing lateral wall, second tourus marginal lateral wall is equipped with two adjacent V-arrangement grooves, every the V-arrangement groove divide equally do not with the shell fragment cooperatees.
As a preferred technical scheme, the elastic sheet is provided with a first elastic plate and a second elastic plate vertically extending along the end part of the first elastic plate, the first elastic plate is pivoted on the side wall of the shell, and the second elastic plate is matched with each V-shaped groove.
According to the preferable technical scheme, the operating rod is U-shaped and comprises an arc-shaped body and operating connecting rods which are perpendicular to the two ends of the arc-shaped body and extend out respectively, the end portion of each operating connecting rod is pivoted to the side wall of the shell, symmetrical through holes are formed in the middle of each operating connecting rod, and the two ends of each first connecting rod are pivoted in the corresponding through holes and extend out of the corresponding operating connecting rod.
Preferably, the handle comprises a handle part and a tooth-shaped anti-slip part which is arranged at the front side of the handle part and extends along the radial direction, and the tooth-shaped anti-slip part is composed of a plurality of U-shaped teeth which are sequentially connected end to end.
According to the preferable technical scheme, the hammer tip body is conical, the tip of the hammer tip body faces to the front opening of the shell, and the bottom of the hammer tip body is integrally connected with the hammer body.
Preferably, the hammer rod extends out of the rear side wall of the shell.
As described above, the window breaker according to the present invention has the following beneficial effects:
after the window breaker is utilized, compared with the prior art, due to the adoption of the structure, a plurality of symmetrical sliding chutes are arranged on the two side walls of the shell, an operating mechanism is pivoted in one of the sliding chutes positioned on the upper part of the shell, a hammer body mechanism is arranged in the shell, and a handle extends out of the side wall positioned at the bottom of the shell; like this the user when using the broken window ware of this application, can hand handle department by one hand, the other hand is with operating device stimulate backward, make the second connecting rod slide in the spout, and utilize the dog of hammer block mechanism to drive hammer body backward compression spring, relax and place behind operating device's hand, make the forward opening motion of awl point body towards the casing under the reset action of spring, thereby realize broken window function, need not with the help of parts such as motor, make overall structure compacter, and is with low costs, small, operation process is simple, therefore, the event is more suitable for popularization and application.
The present invention will be further described with reference to the following embodiments.
Drawings
FIG. 1 is a perspective view of a window breaker;
FIG. 2 is a rear view of a window breaker;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view of a hammer mechanism of the window breaker;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic structural diagram of an operating mechanism and a shell of the window breaker in a separated state.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications. The specific structure can be explained with reference to the drawings of the patent application.
In the following embodiments, the direction is defined by the arrow in fig. 1, the left side of the paper surface is the left direction, the right side of the paper surface is the right direction, the upper side of the paper surface is the upper direction, the lower side of the paper surface is the lower direction, the front side perpendicular to the paper surface is the front direction, the rear side perpendicular to the paper surface is the rear direction, the housing inner cavity is the inside, and the housing outer wall is the outside.
Referring to fig. 1 to 5, a window breaker includes a housing 1 having a front opening 10 and disposed transversely, a plurality of symmetrical chutes 11 are disposed on two side walls of the housing 1, an operating mechanism 2 is pivotally connected in one of the chutes 11 located on an upper portion of the housing 1, a hammer mechanism 3 is disposed in the housing 1, and a handle 4 extends from a side wall located at a bottom of the housing 1;
the sliding chute 11 close to the top of the shell 1 is provided with a first notch 110 and a second notch 111 connected with the first notch 110, the sliding chute 11 close to the bottom of the shell 1 is provided with a plurality of arc-shaped teeth 12, and each arc-shaped tooth 12 is arranged at intervals along the radial direction;
the operating mechanism 2 comprises an operating rod 20, a first connecting rod 21, a second connecting rod 22 and two plate bodies 23, wherein two ends of the operating rod 20 are respectively pivoted at the rear end of the side wall of the shell 1, two ends of the first connecting rod 21 are pivoted on two side walls of the operating rod 20 and fixed with one end of each plate body 23, the second connecting rod 22 is slidably sleeved on the first notch 110 and the second notch 111, and the other end of each plate body 23 is fixed with two ends of the second connecting rod 22 which respectively extend out of the sliding chute 11;
the hammer mechanism 3 comprises a hammer body 30, a stop block 31, a plurality of springs 32, a hammer tip 33 extending from the front end of the hammer body 30, a hammer rod 34 extending from the rear end of the hammer body 30, a chuck 35, a rotor 36 and a spring sheet 37 which are positioned on two side walls of the shell 1, wherein the two side walls of the hammer body 30 are in sliding fit with the chute 11 positioned in the middle of the shell 1, one of them spring 32 cover is located hammer stem 34, dog 31 top be equipped with second connecting rod 22 matched with notch 310, the dog partly embedded in casing 1 top and its both sides through spring 32 with casing 1 normal running fit, dop 35 and shell fragment 37 all set up in casing 1 lateral wall, rotor 36 pot head is located dop 35, the rotor 36 other end pin joint in casing 1 lateral wall and with shell fragment 37 cooperate, the neighboring of the rotor 36 other end and one of them arc tooth 12 sliding fit. Compared with the prior art, the invention has the advantages that a plurality of symmetrical chutes 11 are arranged on the two side walls of the shell 1, the operating mechanism 2 is pivoted in one chute 11 positioned on the upper part of the shell 1, the hammer mechanism 3 is arranged in the shell 1, and the handle 4 extends out of the side wall positioned at the bottom of the shell 1; like this the user is when using the broken window ware of this application, can hand handle 4 departments in one hand, another hand is with operating device 2 pulling backward, make second connecting rod 22 slide in spout 11, and utilize the dog of hammer block mechanism 3 to drive hammer body 30 backward compression spring 32, relax and place in operating device 2's hand after, make the forward opening motion of awl point body 33 towards the casing under spring 32's the effect that resets, thereby realize broken window function, need not with the help of parts such as motor, make overall structure compacter, low cost, small, the operation process is simple, and is practical, so be more suitable for popularization and application.
It should be noted that the working principle of the present invention is divided into two processes, specifically as follows:
first procedure
Referring to fig. 1 to 5, when the handle 4 is held by one hand and the operating mechanism 2 is operated by the other hand, the second link 22 connected to the operating rod 20 is engaged with the stopper 31 above the hammer body 30, so as to drive the hammer mechanism 3 to move backward, when the second link 22 moves from the first notch 110 to a position where it enters the second notch 111, the second link 22 is separated from the hammer mechanism 3, and the hammer mechanism 3 moves forward along the track of the chute 11 under the action of the spring 32; in the process of resetting the spring 32, the second link 22 is clamped into the notch 310 in front of the stopper 31, so that the stopper 31 is pushed to make a circular motion, at this time, a gap appears above the hammer body 30, the second link 22 passes through the gap from the upper side to reach the front of the stopper 31, and the axial direction joints of the stopper 31 and the top of the hammer body 30 are respectively provided with a reset spring 32, so that when the second link 22 moves to the front of the stopper 31, the stopper 31 can be reset to the original position, and therefore, the operation mechanism 2 drives the hammer body mechanism 3 to move backwards and forwards.
Second process
As shown in fig. 1 to 5, the rotator 36 connected to the hammer body 30 swings up and down on the arc-shaped teeth 12 along with the backward movement during the process of compressing the spring 32 backward along with the hammer body 30, and the hammer mechanism 3 does not affect the backward compression process of the spring 32 and can also play a locking role; when the chuck 35 moves to the highest point along the arc-shaped teeth 12, the rotation angle of the rotating body 36 is greater than the angle of movement on the arc-shaped teeth 12, and at this time, the bent part (i.e., the second elastic plate 371) of the elastic sheet 37 is clamped into the V-shaped groove 3620 on the rotating body 36, so that the angle of the rotating body 36 at this time is locked, and the rotating body 36 cannot release the arc-shaped teeth 12 below the rotating body 36, thereby canceling the locking effect, and when the whole hammer mechanism 3 moves to the gap between the chuck 35 in front and the arc-shaped teeth 12 at a corresponding angle (the angle is preferably 45 °), the rotating body 36 and the elastic sheet 37 are bent, separated and restored to the original rotatable state, thereby completing the backward and forward actions of the hammer mechanism 3, and realizing the.
Referring to fig. 4 and 5, the rotating body 36 includes a rotating rod 360, a first ring 361 extending along one end of the rotating rod 360 and a second ring 362 extending along the other end of the rotating rod 360, the outer diameter of the first ring 361 is smaller than the outer diameter of the second ring 362, the first ring 361 is pivoted on the outer side wall of the chuck 35, the second ring 362 is pivoted on the side wall of the housing 1, two adjacent V-shaped grooves 3620 are formed in the side wall of the edge of the second ring 362, and each of the V-shaped grooves 3620 is equally divided into two parts to be matched with the elastic sheet 37.
Referring to fig. 4 and 5, the elastic piece 37 has a first elastic plate 370 and a second elastic plate 371 vertically extending from an end of the first elastic plate 370, the first elastic plate 370 is pivotally connected to a side wall of the housing 1, and the second elastic plate 371 is engaged with each of the V-shaped grooves 3620.
Referring to fig. 6, the operating rod 20 is U-shaped, the operating rod 20 includes an arc-shaped body 200 and operating links 201 extending perpendicularly to two ends of the arc-shaped body 200, an end of each operating link 201 is pivotally connected to a side wall of the housing 1, a symmetrical through hole 2010 is formed in a middle of each operating link 201, and two ends of the first link 21 are pivotally connected to corresponding through holes 2010 and extend out of the corresponding operating links 201.
As shown in fig. 2, 3 and 6, since the handle is required to be gripped when using the window breaker of the present invention, the handle 4 includes a handle portion 40 and a tooth-shaped anti-slip portion 41 provided on the front side of the handle portion 40 and extending in the radial direction, and the tooth-shaped anti-slip portion 41 is formed by a plurality of U-shaped teeth 410 connected end to end in sequence. Through the tooth-shaped anti-slip part 41 which is arranged at the front side of the handle part 40 and extends along the radial direction, the contact area between the handle of a user and the handle 4 can be increased, so that the grip strength is increased, the window breaker is prevented from slipping from the hand, the safety accident is effectively avoided, and the safety of using the window breaker is further improved.
Referring to fig. 1, 2 and 3, the hammer tip body 33 is tapered, a tip of the hammer tip body 33 faces a front opening of the housing 1, and a bottom of the hammer tip body 33 is integrally connected to the hammer body 30.
As shown in fig. 2 and 3, the hammer rod 34 extends out of the rear side wall of the housing 1.
As described above, the window breaker according to the present invention has the following beneficial effects:
after the window breaker is utilized, compared with the prior art, due to the adoption of the structure, a plurality of symmetrical sliding chutes are arranged on the two side walls of the shell, an operating mechanism is pivoted in one of the sliding chutes positioned on the upper part of the shell, a hammer body mechanism is arranged in the shell, and a handle extends out of the side wall positioned at the bottom of the shell; like this the user when using the broken window ware of this application, can hand handle department by one hand, the other hand is with operating device stimulate backward, make the second connecting rod slide in the spout, and utilize the dog of hammer block mechanism to drive hammer body backward compression spring, relax and place behind operating device's hand, make the forward opening motion of awl point body towards the casing under the reset action of spring, thereby realize broken window function, need not with the help of parts such as motor, make overall structure compacter, and is with low costs, small, operation process is simple, therefore, the event is more suitable for popularization and application.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a window breaker, includes the casing that has preceding opening and transversely sets up which characterized in that: a plurality of symmetrical chutes are arranged on two side walls of the shell, an operating mechanism is pivoted in one chute positioned on the upper part of the shell, a hammer body mechanism is arranged in the shell, and a handle extends out of the side wall positioned at the bottom of the shell;
the sliding chute close to the top of the shell is provided with a first notch and a second notch connected with the first notch, the sliding chute close to the bottom of the shell is provided with a plurality of arc-shaped teeth, and each arc-shaped tooth is arranged at intervals along the radial direction;
the operating mechanism comprises an operating rod, a first connecting rod, a second connecting rod and two plate bodies, wherein two ends of the operating rod are respectively pivoted at the rear end of the side wall of the shell, two ends of the first connecting rod are pivoted on two side walls of the operating rod and are fixed with one end of each plate body, the second connecting rod is slidably sleeved in the first notch and the second notch, and the other end of each plate body is fixed with two ends of the second connecting rod which respectively extend out of the sliding groove;
the hammer body mechanism comprises a hammer body, a stop block and a plurality of springs, a hammer tip body extends out of the front end of the hammer body, a hammer rod extends out of the rear end of the hammer body, the hammer body mechanism further comprises a chuck, a rotating body and an elastic sheet which are positioned on two side walls of the shell, the two side walls of the hammer body are in sliding fit with a sliding chute positioned in the middle of the shell, one spring is sleeved on the hammer rod, a notch matched with the second connecting rod is formed in the top of the stop block, one part of the stop block is embedded in the top of the shell, the two sides of the stop block are in rotating fit with the shell through the springs, the chuck and the elastic sheet are both arranged on the side wall of the shell, one end of the rotating body is sleeved on the chuck;
the rotating body comprises a rotating rod, a first circular ring extending out along one end of the rotating rod and a second circular ring extending out along the other end of the rotating rod, the outer diameter of the first circular ring is smaller than that of the second circular ring, the first circular ring is pivoted on the outer side wall of the chuck, the second circular ring is pivoted on the side wall of the shell, two adjacent V-shaped grooves are formed in the side wall of the edge of the second circular ring, and each V-shaped groove is matched with the elastic sheet;
the elastic sheet is provided with a first elastic plate and a second elastic plate which vertically extends along the end part of the first elastic plate, the first elastic plate is pivoted on the side wall of the shell, and the second elastic plate is matched with each V-shaped groove;
the hammer tip body is conical, the tip of the hammer tip body faces the front opening of the shell, and the bottom of the hammer tip body is integrally connected with the hammer body.
2. The window breaker of claim 1, wherein: the utility model discloses a casing, including casing lateral wall, operating lever, first connecting rod both ends pin joint in corresponding through-hole and stretch out corresponding operating link, the operating lever is the U-shaped, the operating lever includes the arc body and the operating link that stretches out respectively perpendicular to arc body both ends, every operating link tip all pin joint in casing lateral wall, symmetrical through-hole has all been seted up at every operating link middle part, first connecting rod both ends pin joint is in corresponding through-hole and stretch out corresponding operating link.
3. The window breaker of claim 1, wherein: the handle is provided with a handle part and a tooth-shaped anti-slip part which is arranged on the front side of the handle part and extends along the radial direction, wherein the tooth-shaped anti-slip part is formed by a plurality of U-shaped teeth which are sequentially connected end to end.
4. The window breaker of claim 1, wherein: the hammer rod extends out of the rear side wall of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525992.2A CN110239471B (en) | 2019-06-18 | 2019-06-18 | Window breaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525992.2A CN110239471B (en) | 2019-06-18 | 2019-06-18 | Window breaking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110239471A CN110239471A (en) | 2019-09-17 |
| CN110239471B true CN110239471B (en) | 2020-10-30 |
Family
ID=67887807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525992.2A Expired - Fee Related CN110239471B (en) | 2019-06-18 | 2019-06-18 | Window breaking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110239471B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6418628B1 (en) * | 2001-03-22 | 2002-07-16 | Task Force Tips, Inc. | Spring-loaded car window breaker and retractable safety sheath |
| US7028874B2 (en) * | 2003-12-04 | 2006-04-18 | Clear Dawn Co., Ltd. | Windows-breaking emergency escape device |
| CN204161296U (en) * | 2014-10-16 | 2015-02-18 | 慈溪市腾辉汽车零部件有限公司 | Novel safety hammer |
| CN204895372U (en) * | 2015-07-30 | 2015-12-23 | 江门市易世进出口有限公司 | Automatic lifesaving that resets hammer |
| CN105150991A (en) * | 2015-09-14 | 2015-12-16 | 徐森良 | Hand clamp type window breaking device |
| CN205828840U (en) * | 2016-06-28 | 2016-12-21 | 徐晔 | Cigarette lighter plug |
| CN207101650U (en) * | 2017-07-18 | 2018-03-16 | 刘向程 | A kind of synchronous reset formula automobile window breaking hammer |
| CN107351804A (en) * | 2017-08-26 | 2017-11-17 | 严梓展 | A kind of security against fire fire fighting hammer |
-
2019
- 2019-06-18 CN CN201910525992.2A patent/CN110239471B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110239471A (en) | 2019-09-17 |
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Effective date of registration: 20200928 Address after: 236000 118 households in houtianzi village, Baimiao village, Yingquan District, Fuyang City, Anhui Province Applicant after: Anhui xingqianli Intellectual Property Service Co., Ltd Address before: 410000 Room 218, Building 3, Hing-tech Park, 100 Luyun Road, Changsha High-tech Development Zone, Hunan Province Applicant before: CHANGSHA NINGHU MACHINERY EQUIPMENT Co.,Ltd. |
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