CN211398635U - Valve core - Google Patents
Valve core Download PDFInfo
- Publication number
- CN211398635U CN211398635U CN201922162237.0U CN201922162237U CN211398635U CN 211398635 U CN211398635 U CN 211398635U CN 201922162237 U CN201922162237 U CN 201922162237U CN 211398635 U CN211398635 U CN 211398635U
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- China
- Prior art keywords
- valve
- sleeve
- sealing
- sealing sleeve
- annular
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 101
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 34
- 239000002699 waste material Substances 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model discloses a valve core, this valve core include valve body and fixed connection in the base of valve body lower extreme, the valve core intracavity that valve body and base enclose be provided with the still of being connected with the base and with the rotor of still contact, rotor one end is connected with the valve rod that passes the valve body, the rotor drives and relative still motion by the valve rod: the upper end of the valve core cavity is provided with a valve sleeve which can rotate relative to the valve body, the lower end of the valve sleeve is connected with a sliding disc which can slide relative to the valve sleeve, the lower end of the sliding disc is clamped with a movable sheet, the valve rod is hinged with the valve sleeve through a pin shaft, and the lower end of the valve rod penetrates through the valve sleeve and is clamped with the upper end of the sliding disc; wherein, a sealing sleeve is also arranged between the valve rod and the valve sleeve; the valve rod is provided with a sealing part; the inner wall of the sealing sleeve is provided with a first annular concave surface, the valve rod penetrates through the sealing sleeve, and the sealing part is matched with the first annular concave surface for sliding sealing. When water flows out from the water outlet on the side wall of the valve body, the valve core can effectively prevent the water from seeping out from the contact part of the valve rod and the valve sleeve.
Description
Technical Field
The utility model relates to a house bathroom accessory technical field, in particular to case.
Background
Current case comprises valve body, base, rotor, stator and valve rod etc. usually, and the base setting is at the valve body lower extreme, and rotor and stator setting are inside the valve body, and the valve body is stretched out to the operation end of valve rod, and its theory of operation is: the valve rod controls the movable plate to move and/or rotate, and the movable plate controls the size of the water inlet on the static plate, so that the control and the on-off of the water flow are realized.
In the single valve core in the prior art, water flow cannot flow out from the side wall of the valve body above the driven plate, and the main reason is that when water flows out from the water outlet in the side wall of the valve body above the driven plate, water is easy to seep out from the contact part of the valve rod and the valve sleeve, so that waste of water resources is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a case, when water flows from the delivery port on the valve body lateral wall of piece top, water hardly oozes from the contact site of valve rod with the valve barrel, can avoid the waste of water resource to a certain extent.
According to the utility model discloses case includes valve body and fixed connection in the base of valve body lower extreme, and the valve core intracavity that valve body and base enclose is provided with the still of being connected with the base and with the rotor of still contact, rotor one end is connected with the valve rod that passes the valve body, and the rotor is driven by the valve rod and relative still motion: the upper end of the valve core cavity is provided with a valve sleeve which can rotate relative to the valve body, the lower end of the valve sleeve is connected with a sliding disc which can slide relative to the valve sleeve, the lower end of the sliding disc is clamped with a movable sheet, the valve rod is hinged with the valve sleeve through a pin shaft, and the lower end of the valve rod penetrates through the valve sleeve and is clamped with the upper end of the sliding disc; a sealing sleeve is also arranged between the valve rod and the valve sleeve; the valve rod is provided with a sealing part; the inner wall of the sealing sleeve is provided with a first annular concave surface, the valve rod penetrates through the sealing sleeve, and the sealing part is matched with the first annular concave surface for sliding sealing.
According to the utility model discloses case sets up the seal cover between valve rod and the valve barrel, is provided with the sealing on the valve rod, and first annular concave surface is set to the inner wall of seal cover, and the case passes through sealing and first annular concave surface cooperation sliding seal. The setting of seal cover makes hydroenergy can flow out from the delivery port of the valve body lateral wall of follow-up piece top, has expanded the structure of current single case to a certain extent to satisfy the specific design demand of tap and case. When water flows out from the water outlet of the side wall of the valve body above the water driven plate, the sealing sleeve can effectively prevent water from seeping out from the contact part of the valve rod and the valve sleeve, and waste of water resources can be avoided to a certain extent.
According to some embodiments of the utility model, on the seal cover with the relevant position of round pin axle seted up with the first breach groove that the round pin axle matches.
According to some embodiments of the utility model, the upper portion inner wall of valve barrel is provided with first cyclic annular portion, the up end of seal cover with the lower terminal surface butt of first cyclic annular portion, the seal cover passes through first cyclic annular portion with first annular concave surface cooperation extrusion location.
According to some embodiments of the utility model, the middle part inner wall of valve barrel is provided with the annular portion of second, the up end of seal cover with the lower terminal surface butt of the annular portion of second, still be provided with between seal cover and the sliding tray and support the cover, support the up end of cover with the lower terminal surface butt of seal cover, the seal cover passes through the annular portion of second with support the cover cooperation and extrude the location.
According to some embodiments of the utility model, the lower terminal surface of seal cover includes first inclined plane and second inclined plane, fillet transition just between first inclined plane and the second inclined plane the contained angle on first inclined plane and second inclined plane is 100 to 170, support the up end of cover with the lower terminal surface of seal cover matches.
According to some embodiments of the invention, the inner wall of the support sleeve is provided as a second annular concave surface matching the sealing portion.
According to some embodiments of the utility model, the lower part inner wall of valve barrel is provided with the annular portion of third, the lower terminal surface of seal cover with the up end butt of the annular portion of third, the middle part inner wall of valve barrel is provided with the annular portion of fourth, be provided with in the annular portion of fourth and compress tightly the cover, compress tightly the cover and stretch out the annular portion of fourth, and with the up end butt of seal cover, the seal cover passes through the annular portion of third with compress tightly cover cooperation extrusion location.
According to some embodiments of the utility model, the lower end face of the sealing sleeve comprises a fifth bevel and a sixth bevel, the fifth bevel and the sixth bevel being in rounded transition and the angle between the fifth bevel and the sixth bevel being 120 ° to 170 °; the upper end face of the third annular part is matched with the lower end face of the sealing sleeve.
According to some embodiments of the utility model, compress tightly the cover with the relevant position of round pin axle seted up with the second breach groove that the round pin axle matches.
According to some embodiments of the invention, the upper inner wall of the compression sleeve is configured as an inverted conical surface.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a sectional view of the valve core with a sealing sleeve according to the present invention;
fig. 2 is a sectional view showing the installation of the seal cartridge in the first embodiment of the present invention.
Fig. 3 is a schematic structural view of a valve sleeve according to a first embodiment of the present invention;
fig. 4 is a cross-sectional view of a valve sleeve in a first embodiment of the invention;
fig. 5 is a schematic structural view of a valve stem according to a first embodiment of the present invention;
fig. 6 is a schematic structural view of a sealing sleeve in a first embodiment of the present invention;
fig. 7 is a schematic structural view of a valve stem in a second and third embodiment of the present invention;
figure 8 is a sectional view of the installation of a sealing sleeve in a second embodiment of the invention;
fig. 9 is a schematic structural view of a valve sleeve according to a second embodiment of the present invention;
fig. 10 is a cross-sectional view of a valve sleeve in a second embodiment of the invention;
fig. 11 is a schematic structural view of a sealing sleeve in a second embodiment of the present invention;
fig. 12 is a schematic structural view of a support sleeve according to a second embodiment of the present invention;
figure 13 is a sectional view of the mounting of the gland in a third embodiment of the invention;
fig. 14 is a schematic structural view of a valve sleeve in a third embodiment of the present invention;
fig. 15 is a cross-sectional view of a valve sleeve in a third embodiment of the invention;
fig. 16 is a schematic structural view of a sealing sleeve in a third embodiment of the present invention;
fig. 17 is a schematic structural view of a pressing sleeve in a third embodiment of the present invention;
fig. 18 is a sectional view of a pressing sleeve in a third embodiment of the present invention;
fig. 19 is a schematic structural view of a valve stem according to a fourth embodiment of the present invention;
fig. 20 is a schematic structural view of a sealing sleeve in a fourth embodiment of the present invention.
The valve comprises a valve body 100, a pin shaft 110, a valve rod 200, a sealing part 201, a through hole 202, a valve sleeve 300, a first annular part 301, a second annular part 302, a third annular part 303, a fourth annular part 304, a seventh inclined surface 305, an eighth inclined surface 306, a sliding disc 400, a moving plate 500, a static plate 600, a base 700, a supporting sleeve 800, a second annular concave surface 801, a third inclined surface 802, a fourth inclined surface 803, a pressing sleeve 810, a second notch groove 811, an inverted conical surface 812, a sealing sleeve 900, a first annular concave surface 901, a first notch groove 902, a first inclined surface 903, a second inclined surface 904, a fifth inclined surface 905 and a sixth inclined surface 906.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The utility model provides a valve core to solve the single unable sealed of contact site department of case valve rod and valve barrel among the prior art, the problem that water easily oozes from the contact site of valve rod and valve barrel.
The following describes a valve cartridge of the present invention in detail with reference to the preferred embodiments and the accompanying drawings.
The utility model provides a valve core, refer to fig. 1, this valve core includes valve rod 200, valve body 100 and fixed connection are in the base 700 of valve body 100 lower extreme, the valve core intracavity that valve body 100 and base 700 enclose is provided with the still 600 of being connected with base 700 and the rotor 500 of contacting with still 600, the upper end in valve core chamber still is provided with valve body 100 pivoted valve barrel 300 relatively, the valve barrel 300 lower extreme is connected with the gliding sliding tray 400 of valve barrel 300 relatively, sliding tray 400 lower extreme joint rotor 500, the upper end joint of valve barrel 300 and sliding tray 400 is passed to the valve rod 200 lower extreme, valve rod 200 is articulated through round pin axle 110 with valve barrel 300, valve body 100 is stretched out to the operation end of valve rod 200, rotor 500 is driven by valve rod 200 and relative stator 600 moves. Wherein, a sealing sleeve 900 is also arranged between the valve rod 200 and the valve sleeve 300; the arrangement of the sealing sleeve 900 enables water to flow out from the water outlet on the side wall of the valve body 100 above the driven plate 500, and the structure of the existing single-handle valve core is expanded to a certain extent so as to meet the specific design requirements of the water faucet and the valve core. When water flows out from a water outlet on the side wall of the valve body 100 above the water driven plate 500, the sealing sleeve 900 can effectively prevent water from seeping out from the contact part of the valve rod 200 and the valve sleeve 300, and waste of water resources can be avoided to a certain extent.
In the first embodiment of the present invention, referring to fig. 2 to 6, the upper inner wall of the valve housing 300 is provided with a first annular portion 301, and the valve rod 200 is provided with a sealing portion 201, in this embodiment, the sealing portion 201 is provided in a spherical shape. The inner wall of the sealing sleeve 900 is provided with a first annular concave surface 901 matched with the sealing part 201, the valve rod 200 passes through the sealing sleeve 900, and the sealing part 201 is matched with the first annular concave surface 901 for sliding sealing. The upper end surface of the seal sleeve 900 abuts against the lower end surface of the first annular portion 301, and the seal sleeve 900 is positioned by the first annular portion 301 and the first annular concave surface 901 in a matched and extruded manner. The upper end of the valve stem 200 is hinged to the valve housing 300 through a pin 110, and a through hole 202 for the pin 110 to pass through is formed in the sealing portion 201 of the valve stem 200. The sealing sleeve 900 is provided with a first notch 902 matching with the pin 110 at a position corresponding to the pin 110.
In the second embodiment of the present invention, referring to fig. 7 to 12, the inner wall of the middle portion of the valve housing 300 is provided with a second annular portion 302, and the valve rod 200 is provided with a sealing portion 201, in this embodiment, the sealing portion 201 is provided in a spherical shape. The inner wall of the sealing sleeve 900 is provided with a first annular concave surface 901 matched with the sealing part 201, the valve rod 200 passes through the sealing sleeve 900, and the sealing part 201 is matched with the first annular concave surface 901 for sliding sealing. The upper end face of the sealing sleeve 900 is abutted against the lower end face of the second annular portion 302, a support sleeve 800 is further arranged between the sealing sleeve 900 and the sliding disc 400, the upper end face of the support sleeve 800 is abutted against the lower end face of the sealing sleeve 900, and the sealing sleeve 900 is positioned by the second annular portion 302 and the support sleeve 800 in a matched and extruded mode. The upper end of the valve stem 200 is hinged to the valve housing 300 through a pin 110, and a through hole 202 for the pin 110 to pass through is formed in the sealing portion 201 of the valve stem 200. The sealing sleeve 900 is provided with a first notch 902 matching with the pin 110 at a position corresponding to the pin 110.
In a further embodiment of the present invention, referring to fig. 11 and 12, the lower end surface of the sealing sleeve 900 comprises a first inclined surface 903 and a second inclined surface 904, the first inclined surface 903 and the second inclined surface 904 are in a rounded transition, and the included angle between the first inclined surface 903 and the second inclined surface 904 is 100 ° to 170 °, preferably 109 °. The upper end surface of support sleeve 800 includes a third inclined surface 802 and a fourth inclined surface 803, the third inclined surface 802 matches with first inclined surface 903, the fourth inclined surface 803 matches with second inclined surface 904, and the third inclined surface 802 and the fourth inclined surface 803 are in fillet transition. The sealing sleeve 900 and the support sleeve 800 are arranged in such a way that the sealing sleeve 900 is in close contact with the support sleeve 800, and the sealing sleeve 900 or the support sleeve 800 is prevented from being dislocated in the process that the valve rod 200 drives the sliding disc 400 to slide.
In a further embodiment of the present invention, referring to fig. 12, the inner wall of the supporting sleeve 800 is configured as a second annular concave surface 801 matched with the sealing portion 201, and the inner wall of the supporting sleeve 800 is configured as an annular concave surface for enabling the valve rod 200 to slide smoothly.
In a third embodiment of the present invention, referring to fig. 7 and 13 to 18, a third annular portion 303 is disposed on the lower inner wall of the valve housing 300, and a sealing portion 201 is disposed on the valve rod 200, in this embodiment, the sealing portion 201 is formed in a spherical shape. The inner wall of the sealing sleeve 900 is provided with a first annular concave surface 901 matched with the sealing part 201, the valve rod 200 passes through the sealing sleeve 900, and the sealing part 201 is matched with the first annular concave surface 901 for sliding sealing. The lower end face of the sealing sleeve 900 is abutted to the upper end face of the third annular portion 303, the middle inner wall of the valve sleeve 300 is provided with a fourth annular portion 304, a compression sleeve 810 is further arranged in the valve sleeve 300, the lower end face of the compression sleeve 810 is abutted to the upper end face of the fourth annular portion 304, the compression sleeve 810 extends out of the fourth annular portion 304 and is abutted to the upper end face of the sealing sleeve 900, and the sealing sleeve 900 is matched with the compression sleeve 810 through the third annular portion 303 to be extruded and positioned. The upper end of the valve stem 200 is hinged to the valve housing 300 through a pin 110, and a through hole 202 for the pin 110 to pass through is formed in the sealing portion 201 of the valve stem 200. The sealing sleeve 900 is provided with a first notch 902 matching with the pin 110 at a position corresponding to the pin 110.
In a further embodiment of the present invention, referring to fig. 16 and 17, the lower end surface of the sealing sleeve 900 comprises a fifth slope 905 and a sixth slope 906, the rounded transition between the fifth slope 905 and the sixth slope 906, and the included angle between the fifth slope 905 and the sixth slope 906 is 120 ° to 170 °, preferably 120 °. The upper end surface of the third annular portion 303 of valve sleeve 300 includes a seventh ramp 305 and an eighth ramp 306, the seventh ramp 305 mating with a fifth ramp 905, the eighth ramp 306 mating with a sixth ramp 906, the seventh ramp 305 and the eighth ramp 306 rounded off. The sealing sleeve 900 and the valve sleeve 300 are arranged in such a way that the sealing sleeve 900 is in close contact with the valve sleeve 300, so that the sealing sleeve 900 is prevented from being displaced and the sealing sleeve 900 is separated from the valve sleeve 300 in the process that the valve rod 200 drives the sliding disc 400 to slide.
In a further embodiment of the present invention, referring to fig. 17, the corresponding position between the pressing sleeve 810 and the pin shaft 110 is provided with a second notch 811 matching with the pin shaft 110.
In a further embodiment of the present invention, referring to fig. 18, the upper inner wall of the pressing sleeve 810 is set to be an inverted conical surface 812, which prevents the valve rod 200 from being obstructed from sliding when the valve rod 200 drives the sliding disk 400 to slide.
In the fourth embodiment of the present invention, referring to fig. 19 and 20, the sealing portion 201 may be set to be cylindrical or other shapes, and the inner wall of the sealing sleeve 900 is changed correspondingly according to the shape of the sealing portion 201, so that only the sliding sealing between the sealing portion 201 and the inner wall of the sealing sleeve 900 is required.
By adopting the valve core in the technical scheme, water can flow out from the water outlet on the side wall of the valve body 100 above the driven plate 500, and the structure of the existing single valve core is expanded to a certain extent so as to meet the specific design requirements of the faucet and the valve core. When water flows out from a water outlet on the side wall of the valve body 100 above the water driven plate 500, the sealing sleeve 900 can effectively prevent water from seeping out from the contact part of the valve rod 200 and the valve sleeve 300, and waste of water resources can be avoided to a certain extent.
The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a valve core, includes valve body and fixed connection in the base of valve body lower extreme, the valve core intracavity that valve body and base enclose is provided with the still of being connected with the base and the moving plate that contacts with the still, and moving plate one end is connected with the valve rod that passes the valve body, and the moving plate is driven by the valve rod and relative still motion, its characterized in that:
the upper end of the valve core cavity is provided with a valve sleeve which can rotate relative to the valve body, the lower end of the valve sleeve is connected with a sliding disc which can slide relative to the valve sleeve, the lower end of the sliding disc is clamped with a movable sheet, the valve rod is hinged with the valve sleeve through a pin shaft, and the lower end of the valve rod penetrates through the valve sleeve and is clamped with the upper end of the sliding disc;
a sealing sleeve is also arranged between the valve rod and the valve sleeve;
the valve rod is provided with a sealing part;
the inner wall of the sealing sleeve is provided with a first annular concave surface, the valve rod penetrates through the sealing sleeve, and the sealing part is matched with the first annular concave surface for sliding sealing.
2. The valve core according to claim 1, wherein a first notch groove matched with the pin shaft is formed on the sealing sleeve at a position corresponding to the pin shaft.
3. The valve core according to claim 1, wherein the inner wall of the upper part of the valve sleeve is provided with a first annular part, the upper end surface of the sealing sleeve is abutted against the lower end surface of the first annular part, and the sealing sleeve is positioned by the first annular part and the first annular concave surface in a matched and extruded manner.
4. The valve core according to claim 1, wherein a second annular portion is arranged on the inner wall of the middle portion of the valve sleeve, the upper end surface of the sealing sleeve abuts against the lower end surface of the second annular portion, a supporting sleeve is further arranged between the sealing sleeve and the sliding disc, the upper end surface of the supporting sleeve abuts against the lower end surface of the sealing sleeve, and the sealing sleeve is located through the matching and extrusion of the second annular portion and the supporting sleeve.
5. The valve cartridge according to claim 4, wherein the lower end surface of the sealing sleeve comprises a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are in fillet transition, the included angle between the first inclined surface and the second inclined surface is 100-170 degrees, and the upper end surface of the support sleeve is matched with the lower end surface of the sealing sleeve.
6. The valve cartridge of claim 4, wherein the inner wall of the support sleeve is configured as a second annular concave surface that mates with the sealing portion.
7. The valve core according to claim 1, wherein a third annular portion is disposed on the inner wall of the lower portion of the valve sleeve, the lower end surface of the sealing sleeve abuts against the upper end surface of the third annular portion, a fourth annular portion is disposed on the inner wall of the middle portion of the valve sleeve, a compression sleeve is disposed on the fourth annular portion, the compression sleeve extends out of the fourth annular portion and abuts against the upper end surface of the sealing sleeve, and the sealing sleeve is positioned by the third annular portion and the compression sleeve in a matched and extruded manner.
8. The valve cartridge according to claim 7, wherein the lower end surface of the sealing sleeve comprises a fifth bevel and a sixth bevel, the fifth bevel and the sixth bevel are in rounded transition and the angle between the fifth bevel and the sixth bevel is 120 ° to 170 °; the upper end face of the third annular part is matched with the lower end face of the sealing sleeve.
9. The valve core according to claim 7, wherein the pressing sleeve is provided with a second notch groove matched with the pin shaft at a position corresponding to the pin shaft.
10. The valve cartridge of claim 7, wherein the upper inner wall of the compression sleeve is configured as an inverted conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162237.0U CN211398635U (en) | 2019-12-05 | 2019-12-05 | Valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162237.0U CN211398635U (en) | 2019-12-05 | 2019-12-05 | Valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398635U true CN211398635U (en) | 2020-09-01 |
Family
ID=72222282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922162237.0U Expired - Fee Related CN211398635U (en) | 2019-12-05 | 2019-12-05 | Valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398635U (en) |
-
2019
- 2019-12-05 CN CN201922162237.0U patent/CN211398635U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |