CN205896292U - Single valve piece check valve - Google Patents
Single valve piece check valve Download PDFInfo
- Publication number
- CN205896292U CN205896292U CN201620782229.XU CN201620782229U CN205896292U CN 205896292 U CN205896292 U CN 205896292U CN 201620782229 U CN201620782229 U CN 201620782229U CN 205896292 U CN205896292 U CN 205896292U
- Authority
- CN
- China
- Prior art keywords
- valve block
- valve
- installing arm
- block
- connecting shaft
- 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
Links
Landscapes
- Check Valves (AREA)
Abstract
The utility model provides a single valve piece check valve, is including the cover body and locate the internal list valve block of cover, installs the connecting axle on the valve block, and the connecting axle spanes the intermediate position of skew valve block on the valve block is equipped with in the inside of the cover body and is used for driving the actuating lever that the valve block was opened, and the point of application of force of actuating lever on the valve block is close to the valve block the edge the farthest away with connecting axle perpendicular distance. The utility model has the advantages of: the connecting axle of this check valve spanes on the valve block and the intermediate position of skew valve block, and the point of application of force of actuating lever on the valve block who installs on internal of cover is close to the valve block the edge the farthest away with connecting axle perpendicular distance, therefore when the valve block was opened, the actuating lever can obtain great moment of torsion, and the valve block is opened more easily. In addition, the valve block of this check valve is put to one side, and the valve block closure state down realizes the locking under actuating lever and the internal lateral wall lug of cover spacing, and the closure is very reliable to, the design of the valve block cooperation guide way that the slant set up can avoid the greasy dirt to accumulate on the valve block.
Description
Technical field
This utility model is related to a kind of check (non-return) valve, especially relates to a kind of single valve piece check (non-return) valve.
Background technology
Using in the longitudinally kitchen of public gas flue, in order to prevent the oil smoke in gas flue from blowing back in kitchen, taking out
Giving vent to anger of lampblack absorber is both provided with device as check valve for flue between the mouth of pipe and public gas flue.Existing flue is non-return
Valve generally comprises the oil smoke passage being made up of shell, and this oil smoke passage has relative air inlet and air outlet, and air inlet connects
Connect the mouth of pipe of giving vent to anger of smoke exhaust ventilator, air outlet extend in public gas flue, be provided with oil smoke passage air outlet able to turn on or off
Valve block, valve block is arranged on the inwall of oil smoke passage by horizontally disposed valve block axis of rotation.When not using lampblack absorber,
Valve block is in the closed position due to self gravitation, and valve block covers in air-out oral area；When using lampblack absorber, valve block is in open position
Put, valve block is away from air outlet.Due to the public gas flue of the public longitudinal direction of many users, once there is fire in single household, greatly
The high-temperature harmful gas of amount pour in longitudinal public gas flue, if now closing the valve block in check valve for flue not in time, this
Substantial amounts of high-temperature harmful gas can be entered in the user family being currently in use lampblack absorber by the oil smoke passage of check valve for flue a bit, from
And threaten the life security of resident family.
Existing check (non-return) valve generally comprises valve body and the retaining board being arranged on valve body, and valve body has body cavity, valve
Body entrance and valve outlet, body cavity connection valve body inlet and valve outlet.According to the number of retaining board, can be by check (non-return) valve
It is divided into single valve piece check (non-return) valve and double valve sheet check (non-return) valve.As Patent No. zl 02263410.x, (Authorization Notice No. is cn 2557819
Y) " check valve for flue " disclosed in Chinese utility model patent is a kind of single valve piece check (non-return) valve, and this check valve for flue is in valve
There are the sidepiece deflector perpendicular to horizontal plane direction, the bottom of retaining board and valve body or sidepiece in the left and right sides in body exit
Deflector is pivotally connected, and meanwhile, retaining board is connected with driving means, drives retaining board to open and close by driving means.
The two ends of the retaining board of this check valve for flue are articulated on valve body or sidepiece deflector by pivot respectively, and packaging efficiency is relatively
Low.The and for example Chinese invention patent application institute of Application No. 201410788893.0 (application publication number is cn 104482256 a)
Disclosed " a kind of intelligent electric check (non-return) valve " is also a kind of single valve piece check (non-return) valve, and its non-return valve block is arranged on by the fixing foot of bearing pin
On bearing pin, intelligent controller is connected with bearing pin by shaft joint, for controlling the rotation of non-return valve block.This intelligent electric check (non-return) valve
Check (non-return) valve slice mounting structure complex, install more inconvenience.Additionally, above-mentioned existing check (non-return) valve does not have from mechanics principle
On to how to reduce open valve block power illustrate.In sum, need existing check valve structure is further improved.
Utility model content
First technical problem to be solved in the utility model is for above-mentioned state of the art, provides one kind only to need
Want relatively small power just can open the single valve piece check (non-return) valve of valve block.
Second technical problem to be solved in the utility model is for above-mentioned state of the art, provides a kind of valve block
In closed state can secure ratcs single valve piece check (non-return) valve.
The technical scheme that above-mentioned first technical problem of this utility model solution is adopted is: this single valve piece check (non-return) valve includes
Cover body and the single valve block in cover body, have, inside described cover body, the through hole matching with described valve block it is characterised in that:
Connecting shaft is provided with described valve block, described connecting shaft across on described valve block and deviate the centre position of valve block, in institute
The inside stating cover body is provided with drive rod for driving valve block to open, the point of application on valve block for the described drive rod near be connected
The farthest valve block edge of axle vertical dimension.
The technical scheme that above-mentioned second technical problem of this utility model solution is adopted is: the valve block of this check (non-return) valve is relatively
In horizontal plane setting, located at the position of valve block lower middle, described drive rod is near cover body medial wall simultaneously for described connecting shaft
Positioned at the lower section of described valve block, the top of drive rod is offseted with the lower surface of described valve block upper lateral part, relative with drive rod
Projection is convexly equipped with cover body medial wall, the upper surface of described valve block following side and described projection offset.So, in drive rod and
Projection jointly spacing under, valve block enables locking in an inclined state.
In order to improve sealing during valve block closure, it is linear sealing structure between described valve block and drive rod, described valve block
It is linear sealing structure and projection between.
In order that the valve block of check (non-return) valve has Oil Guide effect it is preferable that in described valve block towards air outlet direction side
One circle is had on side along the circumferentially distributed oil guide groove of valve block, have oil leakaging port in its lowest position of described oil guide groove.?
After setting oil guide groove on valve block, on the one hand can play the structure strengthening valve block to prevent valve block from deforming, on the other hand can have
Effect avoids greasy dirt to accumulate on valve block.
Further preferably, the air-out port in described cover body is provided with air outlet clamping ring, described air outlet clamping ring
Bore is gradually reduced from bottom to top.After air outlet clamping ring adopts said structure, on the basis of not affecting smoke pipe installation
Smoke pipe bottom and the sealing of air outlet clamping ring can be improved.
Preferred as any of the above-described scheme, on described cover body and be located at the both sides of described through hole and be respectively arranged with the
One installing arm and the second installing arm, are respectively arranged with the first block and in the outside of described first installing arm and the second installing arm
Two blocks, the first end of described connecting shaft is arranged in the first described installing arm and is limited in the first installing arm and first gear
Between block, the second end of described connecting shaft is arranged in the second described installing arm and is limited in the second installing arm and second gear
Between block.So, the two ends of connecting shaft are carried out spacing by corresponding installing arm and block, valve block mounting structure is relatively simple,
Convenient, can be able to effectively spacing after valve block installation, install more firm.
Connecting shaft can have multiple mounting structures on cover body, as a kind of preferred version, in described first installing arm and
The bottom of the second installing arm has first through hole and the second through hole, and the first end of described connecting shaft is arranged on described the
In one through hole, the second end of connecting shaft is arranged in the second described through hole.
As another kind of preferred version of connecting shaft mounting structure, in the lower end of described first installing arm and the second installing arm
Portion has first through hole and the second through hole, has longitudinal chute, described longitudinal direction on the medial surface of described second installing arm
The bottom of chute is connected with the second through hole, and the top of longitudinal chute forms opening, described connection at the top of the second installing arm
The first end of axle is arranged in described first through hole, and the second end of connecting shaft is arranged in the second described through hole.
As another scheme of connecting shaft mounting structure, have for described connection in the bottom of described first installing arm
The breach that axle loads, has the second through hole in the bottom of described second installing arm, the first end of described connecting shaft is fastened on institute
In the breach stated, the second end of connecting shaft is arranged in the second described through hole.
Further preferably, this check (non-return) valve also includes the reduction torsion spring that the valve block opened can be made to maintain reset trend, institute
State the end that reduction torsion spring is set in described connecting shaft, one end of reduction torsion spring is arranged on described valve block, reduction torsion spring
The other end is arranged in the first described installing arm or the second installing arm.
Compared with prior art, the utility model has the advantage of: the connecting shaft of this check (non-return) valve is across on valve block and partially
From the centre position of valve block, it is arranged on drive rod within the cover body point of application on valve block near with connecting shaft vertical dimension
Remote valve block edge, thus, when valve block is opened, drive rod can obtain larger moment, so that valve block is opened more
Easily.Additionally, the valve block of this check (non-return) valve is tilting, and in the common limit of drive rod and cover body medial wall projection under valve block closure state
Locking is realized, the very reliable and, angularly disposed valve block of closure coordinates the design of gathering sill, greasy dirt can be avoided to exist under position
Accumulate on valve block.
Brief description
Fig. 1 is the structural representation of this utility model embodiment one；
Fig. 2 is the a-a of check (non-return) valve shown in Fig. 1 to sectional view；
Fig. 3 is the b-b of check (non-return) valve shown in Fig. 1 to sectional view；
Fig. 4 is the enlarged diagram of c part in Fig. 3；
Fig. 5 is the enlarged diagram of d part in Fig. 3；
Fig. 6 is the structural representation of the check (non-return) valve cover body of this utility model embodiment；
Fig. 7 is the structural representation of this utility model embodiment two；
Fig. 8 is the enlarged diagram of e part in Fig. 7；
Fig. 9 is the partial schematic diagram of the check (non-return) valve cover body of this utility model embodiment two；
Figure 10 is the structural representation of this utility model embodiment three；
Figure 11 is the enlarged diagram of f part in Figure 10；
Figure 12 is the partial schematic diagram of the check (non-return) valve cover body of this utility model embodiment three.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one:
As shown in Figures 1 to 6, the single valve piece check (non-return) valve in the present embodiment includes cover body 1 and the single valve in cover body
Piece 2, valve block 2 is rotatably arranged on cover body 1, has the through hole 11 matching with valve block 2 inside cover body 1.Valve block 2 is installed
There is connecting shaft 7, connecting shaft 7, across on valve block 2 and deviate the centre position of valve block 2, is provided with for driving in the inside of cover body 1
The drive rod 8 that valve block 2 is opened, the point of application on valve block 2 for the drive rod 8 is near the valve block side farthest with connecting shaft 7 vertical dimension
Edge position, so, valve block 2 open when, drive rod 8 can obtain larger moment so that valve block 2 open more easy.
In the present embodiment, valve block 2 is inclined relative to horizontal setting, and gradient is typically provided to less than 30 °.Connecting shaft 7
Located at the position of valve block 2 lower middle, drive rod 8 near cover body 1 medial wall and be located at valve block 2 lower section, the top of drive rod 8
Offset with the lower surface of valve block 2 upper lateral part, cover body 1 medial wall relative with drive rod 8 is convexly equipped with projection 12, under valve block 2
The upper surface of sidepiece is offseted with projection 12.Thus, drive rod 8 and projection 12 jointly spacing under, valve block 2 is in closed state
Enable locking.Additionally, in order to improve sealing during valve block 2 closure, being linear sealing structure between valve block 2 and drive rod 8, valve
It is linear sealing structure between piece 2 and projection 12.
Have a circle along the circumferentially distributed oil guide groove of valve block 21 on valve block 2 is towards the side of air outlet direction side,
Have oil leakaging port 22 in its lowest position of oil guide groove 21.Oil guide groove 21 is set on valve block 2 surface and can play reinforcement valve block knot
The effect of structure, further, since oil guide groove 21 is obliquely installed, can enable oil flow down along oil guide groove 21, and passes through oil leakaging port 22
Flow out, thus be prevented effectively from greasy dirt accumulating on valve block.
In the air-out port of cover body 1, air outlet clamping ring 9 is installed, in order to not affect to improve on the basis of smoke pipe is installed
Smoke pipe bottom and the sealing of air outlet clamping ring, the bore of air outlet clamping ring 9 is gradually reduced from bottom to top.This enforcement
In example, the air-out port of cover body 1 is provided with limit shaft, spacing hole, during installation, limit shaft are opened on air outlet clamping ring 9
Insert spacing in the hole, packaging efficiency is higher.Additionally, the inside top in air outlet clamping ring 9 is provided with limited block 91, valve block is beaten
When opening, limited block 91 can carry out spacing to valve block 2, it is to avoid produces anomalous swing when valve block 2 is opened.
In the present embodiment, connecting shaft 7 is as follows in the mounting structure on cover body 1: on cover body 1 and be located at through hole 11 both sides
It is respectively arranged with the first installing arm 3 and the second installing arm 4, have in the bottom of the first installing arm 3 and the second installing arm 4
First through hole 31 and the second through hole 41；It is respectively arranged with the first block 5 He in the outside of the first installing arm 3 and the second installing arm 4
Second block 6；The first end of connecting shaft 7 be arranged in first through hole 31 and be limited in the first installing arm 3 and the first block 5 it
Between, the second end of connecting shaft 7 is arranged in the second through hole 41 and is limited between the second installing arm 4 and the second block 6.Install
When, first make the first installing arm 3 and the outside deformation of the second installing arm 4, then first through hole 31 is inserted at the two ends of connecting shaft 7 respectively
In the second through hole 41, finally, the first installing arm 3 and the second installing arm 4 recover the state to deformation, prevent connecting shaft 7 from taking off
Go out.After connecting shaft 7 adopts above-mentioned mounting structure, the two ends of connecting shaft 7 carry out spacing, valve block by corresponding installing arm and block
Mounting structure is relatively simple, convenient, can be able to effectively spacing after valve block installation, installs more firm.
In addition, this check (non-return) valve also includes reduction torsion spring 10, reduction torsion spring 10 is set in one of end of connecting shaft 7
Portion, one end of reduction torsion spring 10 is arranged on valve block 2, and the other end of reduction torsion spring 10 is arranged on the first installing arm 3 or the second peace
On dress arm 4, and, the valve block 2 after opening has the trend recovered to closure state in the presence of reduction torsion spring 10.
Embodiment two:
As shown in Figure 7 to 9, the check (non-return) valve in the present embodiment is in the end portion of the first installing arm 3 and the second installing arm 4
Do not have first through hole 31 and the second through hole 41, longitudinal chute 42, longitudinal chute 42 are had on the medial surface of the second installing arm 4
Bottom be connected with the second through hole 41, the top of longitudinal chute 42 forms opening, connecting shaft 7 at the top of the second installing arm 4
First end be arranged in first through hole 31, the second end of connecting shaft 7 is arranged in the second through hole 41.During installation, first will connect
The first end of axle 7 is arranged in the first installing arm 3, and then the second end of connecting shaft 7 is moved down and made by longitudinal chute 42
Second installing arm 4 produces slight deformation, and finally, the second installing arm 4 resets to prevent connecting shaft 7 from deviating from.The present embodiment non-return
The other structures of valve are identical with the structure in embodiment one, the not reinflated description of here.
Embodiment three:
As shown in Figure 10 to Figure 12, the check (non-return) valve in the present embodiment has for connecting shaft 7 in the bottom of the first installing arm 3
The breach 32 loading, has the second through hole 41 in the bottom of the second installing arm 4, the breach that the first end of connecting shaft 7 is fastened on
In 32, the second end of connecting shaft 7 is arranged in the second through hole 41.During installation, the second through hole 41 is inserted at the second end of connecting shaft 7
Interior, the first end of connecting shaft 7 is pushed in breach 32 and forms interference fit, thus preventing connecting shaft 7 from deviating from.The present embodiment
The other structures of check (non-return) valve are identical with the structure in embodiment one, the not reinflated description of here.
Claims (10)
1. a kind of single valve piece check (non-return) valve, the single valve block (2) including cover body (1) and in cover body (1), in described cover body (1)
Portion have the through hole (11) matching with described valve block (2) it is characterised in that: on described valve block (2), connecting shaft is installed
(7), the centre position of valve block (2) is gone up and deviateed to described connecting shaft (7) across in described valve block (2), interior in described cover body (1)
Portion is provided with the drive rod (8) for driving valve block (2) to open, the point of application on valve block (2) for the described drive rod (8) near with even
The farthest valve block edge of spindle (7) vertical dimension.
2. single valve piece check (non-return) valve according to claim 1 it is characterised in that: described valve block (2) is inclined relative to horizontal
Setting, located at the position of valve block (2) lower middle, described drive rod (8) is near cover body (1) medial wall simultaneously for described connecting shaft (7)
Positioned at the lower section of described valve block (2), the top of drive rod (8) is offseted with the lower surface of described valve block (2) upper lateral part, with driving
Projection (12) is convexly equipped with relative cover body (1) medial wall of bar (8), the upper surface of described valve block (2) following side is convex with described
Block (12) offsets.
3. single valve piece check (non-return) valve according to claim 2 it is characterised in that: between described valve block (2) and drive rod (8) be
Linear sealing structure, is linear sealing structure between described valve block (2) and projection (12).
4. single valve piece check (non-return) valve according to claim 2 it is characterised in that: in described valve block (2) towards air outlet direction
One circle is had on the side of side along the circumferentially distributed oil guide groove of valve block (21), in its lowest position of described oil guide groove (21)
Have oil leakaging port (22).
5. single valve piece check (non-return) valve according to claim 1 it is characterised in that: the air-out port of described cover body (1) install
There is air outlet clamping ring (9), the bore of described air outlet clamping ring (9) is gradually reduced from bottom to top.
6. the single valve piece check (non-return) valve according to any claim in claim 1 to 5 it is characterised in that: in described cover
Body (1) above and positioned at the both sides of described through hole (11) is respectively arranged with the first installing arm (3) and the second installing arm (4), described
The outside of the first installing arm (3) and the second installing arm (4) is respectively arranged with the first block (5) and the second block (6), described connection
The first end of axle (7) is arranged on described the first installing arm (3) above and is limited in the first installing arm (3) and the first block (5)
Between, the second end of described connecting shaft (7) is arranged on described the second installing arm (4) above and is limited in the second installing arm (4)
And the second block (6) between.
7. single valve piece check (non-return) valve according to claim 6 it is characterised in that: described first installing arm (3) and second peace
The bottom of dress arm (4) has first through hole (31) and the second through hole (41), and the first end of described connecting shaft (7) is arranged on
In described first through hole (31), the second end of connecting shaft (7) is arranged in described the second through hole (41).
8. single valve piece check (non-return) valve according to claim 6 it is characterised in that: described first installing arm (3) and second peace
The bottom of dress arm (4) has first through hole (31) and the second through hole (41), in the medial surface of described second installing arm (4)
On have longitudinal chute (42), the bottom of described longitudinal chute (42) is connected with the second through hole (41), longitudinal chute (42)
Top forms opening at the top of the second installing arm (4), and the first end of described connecting shaft (7) is arranged on described first through hole
(31), in, the second end of connecting shaft (7) is arranged in described the second through hole (41).
9. single valve piece check (non-return) valve according to claim 6 it is characterised in that: in the bottom of described first installing arm (3)
Have the breach (32) loading for described connecting shaft (7), have the second through hole in the bottom of described second installing arm (4)
(41), the first end of described connecting shaft (7) is fastened in described breach (32), and the second end of connecting shaft (7) is arranged on described
The second through hole (41) in.
10. single valve piece check (non-return) valve according to claim 6 it is characterised in that: also include and the valve block (2) opened can be made to protect
Hold the reduction torsion spring (10) of reset trend, described reduction torsion spring (10) is set in the end of described connecting shaft (7), reduction torsion spring
(10) one end is arranged on described valve block (2), and the other end of reduction torsion spring (10) is arranged on described the first installing arm (3)
Or second in installing arm (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782229.XU CN205896292U (en) | 2016-07-22 | 2016-07-22 | Single valve piece check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782229.XU CN205896292U (en) | 2016-07-22 | 2016-07-22 | Single valve piece check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896292U true CN205896292U (en) | 2017-01-18 |
Family
ID=57784245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620782229.XU Active CN205896292U (en) | 2016-07-22 | 2016-07-22 | Single valve piece check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896292U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051234A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Single-valve-block check valve |
| CN107606254A (en) * | 2017-10-25 | 2018-01-19 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN107969991A (en) * | 2018-01-17 | 2018-05-01 | 张丹 | A kind of dust remover of vacuum cleaner |
| CN108240491A (en) * | 2018-01-17 | 2018-07-03 | 张丹 | Valve body |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
-
2016
- 2016-07-22 CN CN201620782229.XU patent/CN205896292U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051234A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Single-valve-block check valve |
| CN107606254A (en) * | 2017-10-25 | 2018-01-19 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN107606254B (en) * | 2017-10-25 | 2024-04-12 | 杭州老板电器股份有限公司 | Check valve and central oil smoke clarification plant |
| CN107969991A (en) * | 2018-01-17 | 2018-05-01 | 张丹 | A kind of dust remover of vacuum cleaner |
| CN108240491A (en) * | 2018-01-17 | 2018-07-03 | 张丹 | Valve body |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205896292U (en) | Single valve piece check valve | |
| CN106051234A (en) | Single-valve-block check valve | |
| CN105458657B (en) | A kind of cylinder cap captures wire charging mechanism | |
| CN106091533A (en) | Refrigerator | |
| CN208535256U (en) | A kind of fire resisting damper for range hood | |
| CN101956512B (en) | Ventilation cover plate rotational connecting structure and window with same | |
| CN205978670U (en) | Check valve | |
| CN104613201B (en) | A kind of automatic open-close check-valves | |
| CN206554660U (en) | A kind of vehicle window opening angle detent mechanism | |
| CN108104672B (en) | A kind of aluminium horizontal face-port and its application method | |
| CN106065964B (en) | A kind of check (non-return) valve | |
| CN105649498B (en) | A kind of multimode Energy Saving Windows and three kinds of state switching methods | |
| CN215671830U (en) | Assembled folding door | |
| CN202581393U (en) | Air-adjusting type furnace door closed by self-gravity | |
| CN213954419U (en) | Integrated valve group for control | |
| CN107747509A (en) | A kind of water-proof exhaust pipe | |
| CN201306479Y (en) | Fire-proof check valve | |
| CN202253857U (en) | Flip type range hood | |
| CN209026273U (en) | A kind of fire resisting damper for range hood | |
| CN206316845U (en) | A kind of lathe protection sliding door | |
| CN206656404U (en) | A kind of louvre blade linkage switching mechanism of smoke exhaust ventilator | |
| CN113154126A (en) | Self-locking adaptive cooling air control valve | |
| CN205504091U (en) | Exhaust passage import water conservancy diversion non return device | |
| CN201778632U (en) | Rotational connection structure of ventilation cover plate as well as window applying same | |
| CN206554659U (en) | A kind of pressure lever type plug housing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |