CN108590394B - Micro ventilation device for casement window and casement window - Google Patents
Micro ventilation device for casement window and casement window Download PDFInfo
- Publication number
- CN108590394B CN108590394B CN201810163998.5A CN201810163998A CN108590394B CN 108590394 B CN108590394 B CN 108590394B CN 201810163998 A CN201810163998 A CN 201810163998A CN 108590394 B CN108590394 B CN 108590394B
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- groove
- sliding block
- chute
- ventilation device
- slider
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- 238000009423 ventilation Methods 0.000 title claims abstract description 44
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- E05C17/12—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 consisting of a single rod
- E05C17/16—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 consisting of a single rod pivoted only at one end and having an elongated slot
Abstract
The invention discloses a micro ventilation device for a casement window and the casement window, which comprises: a connecting rod provided with a locking point; a chute assembly including a bottom channel, an upper slider, a middle slider, and a lower slider disposed on and sliding over the bottom channel; wherein, an upper sliding groove is arranged on the upper sliding block; a lower sliding groove is formed in the lower sliding block; the middle sliding block is provided with a middle sliding groove, the middle sliding block is also provided with a locking point guide groove, and the locking point guide groove is positioned at one end of the middle sliding groove, which is contacted with the upper sliding groove; the lock point enters the middle chute through the lock point guide groove and can slide in the upper chute, the middle chute and the lower chute; a tension spring is connected between the middle sliding block and the upper sliding block, and a compression spring is connected between the lower sliding block and the bottom groove. The micro ventilation device for the casement window can effectively solve the problem that locking points are separated, and enables the micro ventilation function to be stable, so that the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of casement windows, in particular to a micro ventilation device for a casement window and the casement window.
Background
At present, many casement windows have a micro ventilation function, namely, a micro ventilation device is arranged on the casement window, so that the casement window can be opened and fixed at a preset angle, indoor ventilation is ensured, and children can be prevented from falling out of the window carelessly.
Chinese patent CN204552376U discloses a micro ventilation limiter for casement window, which comprises a clamping block and a safety block, wherein the clamping block is provided with a clamping groove, and the clamping groove is provided with a guiding inclined plane; the safety block is provided with a safety groove which is in butt joint with the clamping groove, the safety groove is provided with a clamping pin inlet, and the clamping pin inlet is provided with an elastic side wall; when micro ventilation is not needed, the safety block is moved upwards; when micro ventilation is needed, the safety block moves downwards, so that the clamping pin is limited in the safety groove and the clamping groove, the opening angle of the window sash is further limited, and children are prevented from carelessly falling out of the window.
However, due to the adoption of the elastic side wall structure, when the bayonet lock moves in the clamping groove and the safety groove, the risk of pin removal exists, so that the micro ventilation function is unstable, and the service life is short.
Disclosure of Invention
The invention aims to provide a micro ventilation device for a casement window, which can effectively solve the problem of release of a lock point, and ensure that the micro ventilation function is stable, thereby prolonging the service life.
In order to achieve the above object, the technical scheme of the present invention is as follows:
a casement window micro ventilation device, comprising:
a connecting rod provided with a locking point;
a chute assembly including a bottom channel, an upper slider, a middle slider, and a lower slider disposed on and sliding over the bottom channel;
wherein, an upper sliding groove is arranged on the upper sliding block; a lower sliding groove is formed in the lower sliding block;
the middle sliding block is provided with a middle sliding groove, the middle sliding block is also provided with a locking point guide groove, and the locking point guide groove is positioned at one end of the middle sliding groove, which is contacted with the upper sliding groove;
the lock point enters the middle chute through the lock point guide groove and can slide in the upper chute, the middle chute and the lower chute;
a tension spring is connected between the middle sliding block and the upper sliding block, and a compression spring is connected between the lower sliding block and the bottom groove.
As a specific embodiment, one end of the connecting rod is in linkage connection with a handle arranged on the window sash main body, and the other end of the connecting rod is in linkage connection with the chute assembly through the locking point.
As a specific embodiment, the bottom groove is further provided with a lower positioning block, one end of the pressure spring is connected with the lower sliding block, and the other end of the pressure spring is connected with the lower positioning block.
As a specific embodiment, the bottom groove is further provided with an upper positioning block, and the upper positioning block is connected with the upper sliding block.
As a specific embodiment, a locking groove is arranged on the bottom groove, and a child safety lock mechanism connected with or separated from the locking groove is also arranged on the upper sliding block.
Further, the child safety lock mechanism comprises a safety lock mounting seat, a mounting through hole is formed in the safety lock mounting seat, the safety lock adjusting switch is arranged in the mounting through hole, and the safety lock adjusting switch moves up and down in the mounting through hole.
As a specific embodiment, the upper slider is provided with a mounting groove, and the child safety lock mechanism is arranged in the mounting groove.
A second object of the present invention is to provide a casement window comprising a casement window micro ventilation device according to any of the above embodiments.
Compared with the prior art, the invention has the following technical effects:
according to the micro ventilation device for the casement window, firstly, the chute assembly is arranged into the upper slider, the middle slider and the lower slider, and then the tension spring is arranged between the middle slider and the upper slider, when the lock point collides with the lock point guide groove of the middle slider, the lock point presses the middle slider to move downwards, the middle slider drives the lower slider to move downwards, a gap is formed between the middle slider and the upper slider, at the moment, the tension spring connecting the upper slider and the middle slider is in a stretching state, the pressure spring connected between the lower positioning block and the lower slider is in a compression state, the lock point further enters the middle chute along the lock point guide groove, the middle slider moves upwards under the acting force of the tension spring, the gap disappears, the lock point is limited in the middle chute, at the moment, the middle chute and the upper chute are butted with each other, and the lock point needs to overcome the upward tension force of the middle chute of the tension spring on one hand, and the thrust of the middle chute generated by the pressure spring on the other hand needs to overcome, so that the lock point can not be separated from the chute under double guarantee, and the micro ventilation device for the casement window can effectively solve the problem of the lock point, and lead to be stable ventilation service life, and prolong.
Furthermore, the sliding chute assembly is in linkage connection with the handle through the connecting rod, the handle acts under the action of external force, and the linkage connecting rod drives the lock point to move on the sliding chute assembly, so that the window sash has the functions of flat-open and micro ventilation.
Furthermore, according to the micro ventilation device for the casement window, the child safety lock mechanism is arranged on the upper sliding block, and is locked or unlocked under the action of external force such as key rotation force, so that the safety problem caused by misoperation of a child is effectively solved.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of the structure of a casement window of the present invention;
FIG. 2 is a schematic view of the structure of the micro ventilation device for the casement window of the present invention disposed on the casement window;
FIG. 3 is a schematic view of the chute assembly of the present invention;
FIG. 4 is an exploded view of the chute assembly of the present invention;
FIG. 5 is a schematic view of the structure of the present invention before the lock point is bumped into the lock point guide groove;
FIG. 6 is a schematic view of the structure of the lock point of the present invention when the lock point is bumped into the lock point guide groove;
FIG. 7 is a schematic view of the structure of the lock point of the present invention after being bumped into the lock point guide groove;
FIG. 8 is a schematic view of the child resistant lock of the present invention in an unlocked state;
FIG. 9 is a schematic view of the child resistant lock of the present invention in a locked state;
FIG. 10 is a schematic view of the movement of the lock points of the micro-ventilation device for a casement window of the present invention when the child safety lock is unlocked;
FIG. 11 is a schematic diagram illustrating the movement of an upper slider by applying an external force to the upper slider;
fig. 12 is a schematic view of the lock point movement of the micro ventilation device for casement window of the present invention when the child safety lock is locked.
Detailed Description
Referring to fig. 1, the casement window of the present invention includes an inner casement window and an outer casement window. The casement window of the embodiment comprises a sash frame body 100 and a sash body 200, wherein a casement window micro ventilation device 300 is arranged in the casement window, and a handle 400 is arranged on the sash body 200.
As shown in fig. 1 and 2, the micro-ventilation device 300 for casement window includes a connecting rod 310, one end of which is connected with the handle 400 provided on the main body 200 for casement window; the other end is connected with the fan frame body 100, specifically, a lock point 311 is arranged on the connecting rod, and the lock point 311 is connected with a chute assembly 320 arranged on the fan frame body 100 in a linkage way.
As shown in fig. 2-4, the micro-ventilation device 300 for casement window further includes a chute assembly 320 disposed on the main body of the fan frame, the chute assembly including a bottom slot 321, and an upper slider 322, a middle slider 323, and a lower slider 324 disposed on and slidable along the bottom slot.
An upper positioning block 325 is further arranged on the bottom groove, and the upper positioning block is connected with the upper sliding block. Specifically, the lower end of the upper positioning block is contacted with or separated from the upper end of the upper sliding block. The upper positioning block is used for limiting the upper sliding distance of the upper sliding block.
The bottom groove is further provided with a lower positioning block 326, and the lower positioning block is connected with the lower slider, specifically, the upper end of the lower positioning block is connected with or separated from the lower end of the lower slider. The lower positioning block is used for limiting the sliding distance of the lower sliding block.
In this embodiment, an upper positioning block, an upper sliding block, a middle sliding block, a lower sliding block and a lower positioning block are sequentially arranged on the bottom groove.
Wherein, lower sliding chute 3241 is arranged on the lower sliding block, the whole lower sliding chute is U-shaped, and the opening of the lower sliding chute faces to the middle sliding chute.
The middle sliding block is provided with a middle sliding groove 3231, and the middle sliding groove is matched with the lower sliding groove. The middle sliding block is also provided with a locking point guide groove 3232, and the locking point guide groove is positioned at one end of the middle sliding groove, which is contacted with the upper sliding groove. Specifically, the lock point guide groove is disposed on at least one of two sides of the middle slider, and the lock point guide groove is communicated with the middle chute.
An upper sliding groove 3221 is formed in the upper sliding block, and the upper sliding groove is matched with the middle sliding groove. The upper chute is U-shaped integrally, and the opening of the upper chute faces the middle chute.
As shown in fig. 4, the upper slider is further provided with a stopping mechanism 800, and when an external force is applied to the middle slider, the middle slider slides on the bottom groove; when the external force is removed, the intermediate slide stops on the bottom groove. In this embodiment, the stop mechanism includes a short spring 801 and a steel ball 802 connected to the spring.
In this embodiment, the upper chute, the middle chute and the lower chute are sequentially communicated, and the lock point on the connecting rod is guided into the middle chute by the lock point guiding groove and further slides in the upper chute, the middle chute and the lower chute.
As shown in fig. 4, a compression spring 500 is connected between the lower slider and the bottom groove. Specifically, one end of the compression spring 500 is connected to the lower slider, and the other end is connected to a lower positioning block disposed on the bottom groove. That is, the lower slider 324 is connected to the lower positioning block 326 via a compression spring 500. In this embodiment, the lower positioning block 326 includes a fixing portion and a spring connection portion. The fixing part of the lower positioning block is provided with a fixing hole, the lower positioning block is fixed on the bottom groove through a fixing piece, and the fixing piece can be a screw or the like. The spring connecting part is arranged in the lower sliding block; the bottom of slider has offered the mounting groove the stopper has been accommodated in the mounting groove, the bottom of stopper has an accommodation groove, the pressure spring sets up in the accommodation groove, just the one end of pressure spring with spring coupling portion connects, the other end with the slider is connected down. In this embodiment, through seting up with the mounting groove in lower spout to set up a holding tank that is used for holding the pressure spring in the mounting groove, when the pressure spring is connected locating piece and lower slider down, restrict the pressure spring in the holding tank of stopper, effectively improved the unobstructed nature in the use and improved the life of product.
As shown in fig. 4, a tension spring 600 is connected between the middle slider and the upper slider. Namely, the middle sliding block is connected with the upper sliding block through a tension spring. Specifically, one end of the tension spring is connected with a first tension spring connecting position, the other end of the tension spring is connected with a second tension spring connecting position, wherein the first tension spring connecting position is arranged at the bottom of the middle sliding block, and the second tension spring connecting position is arranged at the bottom of the upper sliding block.
In the micro ventilation device for the casement window of the embodiment, firstly, the chute assembly is arranged into three parts of an upper sliding block, a middle sliding block and a lower sliding block, and then a tension spring is arranged between the middle sliding block and the upper sliding block.
When the lock point collides with the lock point guide groove of the middle slide block, the middle slide block is pressed to move downwards (as shown by an arrow in fig. 5), the middle slide block drives the lower slide block to move downwards, a gap is formed between the middle slide block and the upper slide block (as shown in fig. 6), at the moment, a tension spring connecting the upper slide block and the middle slide block is in a tensile state, and a compression spring connecting the lower positioning block and the lower slide block is in a compression state. Further, the lock point enters the middle sliding groove along the lock point guide groove, the middle sliding block moves upwards under the acting force of the tension spring, meanwhile, the lower sliding block is reset upwards under the action of the restoring force of the tension spring (shown by an arrow in fig. 7), the gap is eliminated, the lock point is limited in the middle sliding groove, at the moment, the middle sliding groove and the upper sliding groove are in butt joint with each other (shown in fig. 7), on one hand, the lock point needs to overcome the upward tension force of the tension spring on the middle sliding groove, on the other hand, the thrust of the middle sliding groove generated by the tension spring needs to be overcome, and the lock point cannot be separated from the sliding groove under double protection, so that the problem that the lock point is separated can be effectively solved, the micro ventilation function is stable, and the service life is prolonged.
As shown in fig. 8 and 9, a locking groove 3211 is provided in the bottom groove 321, and a child-resistant lock mechanism connected to or disconnected from the locking groove is further provided in the upper slider.
The child safety lock mechanism comprises a safety lock mounting seat 701, a mounting through hole is formed in the safety lock mounting seat, a safety lock adjusting switch 702 is arranged in the mounting through hole, and the safety lock adjusting switch can move up and down in the mounting through hole through rotation of a key.
The upper slider is further provided with a mounting groove 3222, and the child safety lock mechanism is disposed in the mounting groove. In this embodiment, the breeze mounting seat is a screw seat, and the safety lock adjusting switch is a switch adjusting screw, and preferably, the child safety lock mechanism of this embodiment further includes a switch key.
As shown in fig. 10, the switch-adjusting lock in the child-resistant lock mechanism is now disengaged from the locking groove on the bottom groove, i.e., the child-resistant lock mechanism is in the unlocked state.
When the window sashes are in a locking state, the upper ends of the upper sliding blocks are in contact with the lower ends of the upper positioning blocks, at the moment, the middle sliding blocks are connected with the upper sliding blocks under the action of the tension springs, and the lower sliding blocks are positioned at the lower ends of the bottom grooves under the action of the tension springs, so that a certain interval is reserved between the lower sliding blocks and the middle sliding blocks. The lock point 311 is now located between the middle slider and the upper slider. Preferably, the handle is at 0 ° at this point.
If the handle is rotated, under the drive of the connecting rod, the lock point moves downwards along the middle sliding groove along the direction of the sliding block, finally, the lock point is separated from the middle sliding groove, and is in a free state and not limited, and the window sash can be horizontally opened to any angle. Preferably, in the present embodiment, when the handle is rotated to 90 °, the lock point is in a free state from the intermediate chute.
If the handle is continuously rotated, the lock point continuously moves in the direction of the lower sliding block and finally enters the lower sliding groove, and if the window sash is opened, the window sash can only be opened by a preset angle because the lock point is limited in the lower sliding groove. If the window sash is continuously opened, the lock point continuously moves downwards to the bottom end of the lower chute along the lower chute, and the window sash cannot be continuously opened again, namely, the window sash is opened to the limit position. Preferably, in the present embodiment, when the handle is rotated 180 °, the window sash is in a micro ventilation state, and the lock point is limited in the lower chute, the window sash is limited to a predetermined angle, and cannot be opened to a larger angle any more due to being locked. When the handle rotates 0 DEG, the window sashes are locked; when the handle rotates 90 degrees, the window sash is in a free flat-open state; when the handle rotates 180 degrees, the window sashes are in a micro ventilation state, the opening angle is limited, and the micro ventilation device is only a preferred embodiment of the micro ventilation device, the corresponding relation between the handle rotation angle and the window sashes can be adjusted according to actual needs, for example, when the handle rotates within the range of 0-30 degrees, the window sashes are all in a locking state; when the handle rotates 60-90 degrees, the window sash is in a free flat-open state; when the handle rotates 120-180 degrees, the window sash is in a micro ventilation state, the opening angle is limited, and the like.
As shown in fig. 11, when an external force is applied to the upper slider 322, the upper slider starts to move downward (as indicated by the arrow in fig. 11), and when the lower end of the lower slider contacts the upper end of the lower positioning block, the upper slider cannot move downward any more (as shown in fig. 12). At this time, the tail end of the switch adjusting screw is separated from the locking groove (as shown in fig. 8), and then the switch adjusting screw is rotationally adjusted by the switch key, so that the tail end of the switch adjusting screw enters the locking groove (as shown in fig. 9), at this time, the micro ventilation device for the casement window is in a child safety locking state, that is, no matter how the handle rotates, the locking point is limited in the upper chute, the middle chute and the lower chute, and the casement window sash is limited to be opened by a preset angle, so that the possibility of causing danger when the casement window sash is opened due to misoperation of children is effectively avoided.
It should be noted that, in the present invention, the terms of up, down, upper end, or lower end are defined sequentially by the above positioning block, the upper sliding block, the middle sliding block, the lower sliding block, and the lower positioning block, that is, the upper positioning block is located at the upper end of the entire bottom groove, and the lower positioning block is located at the lower end of the entire bottom groove.
The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (8)
1. A casement window micro ventilation device, comprising:
a connecting rod provided with a locking point;
a chute assembly including a bottom channel, an upper slider, a middle slider, and a lower slider disposed on and sliding over the bottom channel;
wherein, an upper sliding groove is arranged on the upper sliding block; a lower sliding groove is formed in the lower sliding block;
the middle sliding block is provided with a middle sliding groove, the middle sliding block is also provided with a locking point guide groove, and the locking point guide groove is positioned at one end of the middle sliding groove, which is contacted with the upper sliding groove;
the lock point enters the middle chute through the lock point guide groove and can slide in the upper chute, the middle chute and the lower chute;
a tension spring is connected between the middle sliding block and the upper sliding block, and a compression spring is connected between the lower sliding block and the bottom groove.
2. The flat-open window micro ventilation device of claim 1, wherein:
one end of the connecting rod is connected with a handle arranged on the window sash main body in a linkage way, and the other end of the connecting rod is connected with a chute assembly arranged on the window sash main body in a linkage way through the locking point.
3. The flat-open window micro ventilation device of claim 1, wherein:
the bottom groove is also provided with a lower positioning block, one end of the pressure spring is connected with the lower sliding block, and the other end of the pressure spring is connected with the lower positioning block.
4. The flat-open window micro ventilation device of claim 1, wherein:
the bottom groove is also provided with an upper positioning block which is contacted with or separated from the upper sliding block.
5. The flat-open window micro ventilation device of claim 1, wherein:
the bottom groove is provided with a locking groove, and the upper sliding block is also provided with a child safety lock mechanism connected with or separated from the locking groove.
6. The flat-open window micro ventilation device of claim 5, wherein:
the child safety lock mechanism comprises a safety lock mounting seat, a mounting through hole is formed in the safety lock mounting seat, a safety lock adjusting switch is arranged in the mounting through hole, and the safety lock adjusting switch can move up and down in the mounting through hole.
7. A casement window micro ventilation apparatus according to claim 5 or 6, wherein:
the upper sliding block is provided with a mounting groove, and the child safety lock mechanism is arranged in the mounting groove.
8. A flat-open window, characterized in that: comprising a flat-open window micro-ventilation device as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163998.5A CN108590394B (en) | 2018-02-27 | 2018-02-27 | Micro ventilation device for casement window and casement window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163998.5A CN108590394B (en) | 2018-02-27 | 2018-02-27 | Micro ventilation device for casement window and casement window |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590394A CN108590394A (en) | 2018-09-28 |
| CN108590394B true CN108590394B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163998.5A Active CN108590394B (en) | 2018-02-27 | 2018-02-27 | Micro ventilation device for casement window and casement window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590394B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202926155U (en) * | 2012-11-20 | 2013-05-08 | 山东国强五金科技有限公司 | Internal casement window micro-ventilating device |
| CN203547319U (en) * | 2012-12-11 | 2014-04-16 | 广东坚朗五金制品股份有限公司 | Slight ventilation device of external side-hung window |
| CN104763257A (en) * | 2015-03-31 | 2015-07-08 | 山东国强五金科技有限公司 | Novel inward vertical hinged micro-ventilation transmission locking device for doors and windows |
| CN204552376U (en) * | 2015-01-30 | 2015-08-12 | 陈国勤 | The micro-ventilation stop of a kind of casement window |
| WO2016153351A2 (en) * | 2015-03-26 | 2016-09-29 | Axa Stenman Nederland B.V. | System comprising a stationary support structure, and an movable panel, as well as a casement stay |
| CN208251879U (en) * | 2018-02-27 | 2018-12-18 | 希美克(广州)实业有限公司 | A kind of slight ventilation device of sliding window and casement window |
-
2018
- 2018-02-27 CN CN201810163998.5A patent/CN108590394B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202926155U (en) * | 2012-11-20 | 2013-05-08 | 山东国强五金科技有限公司 | Internal casement window micro-ventilating device |
| CN203547319U (en) * | 2012-12-11 | 2014-04-16 | 广东坚朗五金制品股份有限公司 | Slight ventilation device of external side-hung window |
| CN204552376U (en) * | 2015-01-30 | 2015-08-12 | 陈国勤 | The micro-ventilation stop of a kind of casement window |
| WO2016153351A2 (en) * | 2015-03-26 | 2016-09-29 | Axa Stenman Nederland B.V. | System comprising a stationary support structure, and an movable panel, as well as a casement stay |
| CN104763257A (en) * | 2015-03-31 | 2015-07-08 | 山东国强五金科技有限公司 | Novel inward vertical hinged micro-ventilation transmission locking device for doors and windows |
| CN208251879U (en) * | 2018-02-27 | 2018-12-18 | 希美克(广州)实业有限公司 | A kind of slight ventilation device of sliding window and casement window |
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| Publication number | Publication date |
|---|---|
| CN108590394A (en) | 2018-09-28 |
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