CN208935479U - Check valve quick coupling - Google Patents
Check valve quick coupling Download PDFInfo
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- CN208935479U CN208935479U CN201821544371.6U CN201821544371U CN208935479U CN 208935479 U CN208935479 U CN 208935479U CN 201821544371 U CN201821544371 U CN 201821544371U CN 208935479 U CN208935479 U CN 208935479U
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- mandril
- hole
- perforation
- quick coupling
- diameter
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- 230000008878 coupling Effects 0.000 title claims abstract description 45
- 238000010168 coupling process Methods 0.000 title claims abstract description 45
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Abstract
The utility model discloses a kind of check valve quick couplings, including quick coupling daughter and quick coupling parent；Quick coupling daughter includes mandril, and mandril includes mandril front, mandril middle part and mandril rear portion, and the rear end of mandril front is connect with front end in the middle part of mandril, and rear end is connect with mandril rear portion front end in the middle part of mandril；It include front half section and mandril middle part second half section in the middle part of mandril in the middle part of mandril；It is overlapped with mandril posterior center line in the middle part of mandril front, mandril and offers the first passage being mutually communicated；The outer wall of second half section offers Five-channel in the middle part of mandril, and Five-channel and first passage penetrate through.On the one hand the utility model, is effectively raised using pressure, and avoid the generation of leak case；On the other hand, it avoids after female intracorporal steel ball wear by long-term use, easily occurs falling off or cannot be with the close-connected situation of daughter progress；In another aspect, being less prone to leakage fastly.It is simple with structure, it is hardly damaged the beneficial effects such as low with manufacturing cost.
Description
Technical field
The utility model relates to a kind of connectors, specifically, in particular to one kind can guarantee interface in a high voltage state
Locate dead-tight check valve quick coupling.
Background technique
In the prior art, quick coupling and the connection of hose mostly use down the mode of seam allowance or clip, pass through this connection
On the one hand mode, is easy to appear leakage, and not high using pressure；On the other hand, the female intracorporal steel ball of quick coupling is through long-term
After abrasion, easily occurs falling off or cannot closely be connect with daughter；In another aspect, quick coupling parent is acted in spring
Lower seal pad is in close state, and is easily leaked under medium erosion corrosion for a long time.
Therefore those skilled in the art are dedicated to developing a kind of individual event valve quick coupling that can effectively place leakage.
Utility model content
In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide one kind to have
Effect places the individual event valve quick coupling of leakage.
To achieve the above object, the utility model provides a kind of check valve quick coupling, including quick coupling daughter and
Quick coupling parent；Quick coupling daughter includes mandril, and mandril includes mandril front, in the middle part of mandril and mandril rear portion, before mandril
The rear end in portion is connect with front end in the middle part of mandril, and rear end is connect with mandril rear portion front end in the middle part of mandril；
It include front half section and mandril middle part second half section in the middle part of mandril in the middle part of mandril；The diameter of mandril front is greater than in the middle part of mandril
The diameter of front half section, the diameter of mandril middle part front half section are greater than the diameter of second half section in the middle part of mandril, and the second half section is straight in the middle part of mandril
Diameter is greater than the diameter at mandril rear portion；
It is overlapped with mandril posterior center line in the middle part of mandril front, mandril and offers the first passage being mutually communicated；Mandril
The outer wall of middle part second half section offers Five-channel, and Five-channel and first passage penetrate through；
Quick coupling parent includes lock-on connection, fitting body and unidirectional valve seal, is offered along lock-on connection center line
Second channel and third channel are slidably seated in second channel in the middle part of mandril, front half section and second channel in the middle part of mandril
The inner wall of inner wall fitting, mandril middle part second half section outer wall and second channel forms fourth lane；Mandril and lock-on connection pass through lock
It is fixed to be detachably connected；Third channel front end and second channel penetrate through, and third channel open rearward end becomes larger shape from front to back
Tapered mouth, mandril rear portion are slidably seated in third channel；
Fitting body includes that connector front, connector middle part and connector rear portion, connector front offer first through hole, connector front
By the front half section of first through hole be set in lock-on connection it is latter half of on, connect front end in the middle part of procephalic rear end and connector and connect,
The second through-hole being used cooperatively with first through hole is offered in the middle part of connector, check valve sealing is slidably provided in the second through-hole
Part, unidirectional valve seal front end are provided with the conical head being used cooperatively with conical opening, and the 4th O-ring is arranged on conical head, single
Valve seal rear end is provided with compressed spring；Rear end connect in the middle part of connector rear portion front end and connector, connector rear portion offer and
The third through-hole of second through-hole perforation.
Preferably, quick coupling daughter further includes the first O-ring, the first O-ring is set in the front end of mandril front.
Preferably, the second half section of mandril front is provided with the first positive stop lug boss being used cooperatively with lock-on connection front end；
Lock sleeve front inner wall is provided with the second positive stop lug boss being used cooperatively with the first positive stop lug boss；Lock sleeve second half section inner wall and lock
The connection of tight coupling outer wall thread.
Preferably, lock-on connection includes locking leading portion, locking middle section and locking back segment, lock sleeve second half section inner wall and lock
Tight leading portion is threadedly coupled, and the back segment for locking leading portion is connect with the front end in locking middle section, and the diameter for locking leading portion is less than locking middle section
Diameter, locking back segment front end connect with locking middle section back segment, locks the diameter of back segment less than the diameter for locking leading portion, before connector
Portion is set on locking back segment.
Preferably, connector front and locking back segment junction are provided with the second O-ring.
Preferably, the inner wall of second channel, which is provided with, offers a circle mounting groove, third O-ring is provided in mounting groove
And Sealing shield ring.
Preferably, lock sleeve and lock-on connection pass through positioning pin connection.
Preferably, the second through-hole includes the limit hole and location hole that center line is overlapped and is mutually communicated, limit hole is located at
Between first through hole and location hole, the diameter of limit hole is greater than the diameter of location hole；
One end of compressed spring is fixed on the junction of location hole and third through-hole, the other end and taper of compressed spring
Head, connection, conical head can slide in limit hole and first through hole.
Preferably, first passage includes the first perforation, the second perforation and third perforation being mutually communicated, the first perforation is opened
It is located on mandril front, the center line of the first perforation is overlapped with the center line of mandril front；
Second perforation is provided in the middle part of mandril, and the second perforation is overlapped with center line in the middle part of mandril, and biperforate diameter is small
In the diameter of the first perforation；Five-channel and the second perforation penetrate through；
Third perforation is provided with mandril rear portion and extends to rear end in the middle part of mandril and penetrates through with the second perforation, third perforation and top
Bar posterior center line is overlapped, and the diameter of third perforation is less than biperforate diameter.
Preferably, unidirectional valve seal includes attachment base and conical head, connection base rear end offers groove body, compressed spring
One end be fixed on the junction of the second through-hole and third through-hole, the other end of compressed spring is fixed in groove body, and attachment base can
The setting of sliding is bonded very much in the second through-hole and with the second through-hole；Conical head, attachment base and taper is arranged in the front end of attachment base
Head junction offers the pipeline with the second through-hole and first through hole perforation.
The beneficial effects of the utility model are: on the one hand the utility model, is effectively raised using pressure, and avoid
The generation of leak case；On the other hand, it avoids after female intracorporal steel ball wears by long-term use, easily occurs falling off or cannot
Close-connected situation is carried out with daughter；In another aspect, being less prone to leakage fastly.It is simple with structure, it is hardly damaged and manufactures
The beneficial effects such as at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one specific embodiment of the utility model.
Fig. 2 is partial enlargement structural representation at A in Fig. 1.
Fig. 3 is partial enlargement structural representation at B in Fig. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Figure 1 to Figure 3, a kind of check valve quick coupling, including quick coupling daughter 50 and quick coupling parent
100；
The quick coupling daughter 50 includes mandril 2, and the mandril 2 includes mandril front 2a, mandril middle part 2b and mandril
Rear portion 2c, the rear end of the mandril front 2a connects with the front end 2b in the middle part of the mandril, the mandril middle part rear end 2b with it is described
The connection of the mandril rear portion front end 2c；
2b includes front half section 2b1 and mandril middle part second half section 2b2 in the middle part of mandril in the middle part of the mandril；The mandril front 2a
Diameter be greater than the diameter of front half section 2b1 in the middle part of the mandril, the diameter of front half section 2b1 is greater than the top in the middle part of the mandril
The diameter of the diameter of second half section 2b2 in the middle part of bar, the mandril middle part second half section 2b2 is greater than the diameter of the mandril rear portion 2c；
2b and mandril rear portion 2c center line are overlapped and offer first be mutually communicated in the middle part of the mandril front 2a, mandril
Channel 3；The outer wall of second half section 2b2 offers Five-channel 5, the Five-channel 5 and the first passage 3 in the middle part of the mandril
Perforation；
The quick coupling parent 100 includes lock-on connection 6, fitting body 7 and unidirectional valve seal 8, is connect along the locking
First 6 center line offers second channel 9 and third channel 10, and 2b is slidably seated in the second channel 9 in the middle part of the mandril
In, front half section 2b1 be bonded with the inner wall of the second channel 9 in the middle part of the mandril, mandril middle part second half section 2b2 outer wall and
The inner wall of the second channel 9 forms fourth lane 12；The mandril 2 is detachable by lock sleeve 13 with the lock-on connection 6
Connection；10 front end of third channel and the second channel 9 penetrate through, and 10 open rearward end of third channel is from front to back gradually
Become larger to form conical opening 15, the mandril rear portion 2c is slidably seated in the third channel 10；
The fitting body 7 includes that connector front 16, connector middle part 17 and connector rear portion 18, the connector front 16 offer
First through hole 19, the connector front 16 by the front half section of first through hole 19 be set in the lock-on connection 6 it is latter half of on, institute
The rear end for stating connector front 16 is connect with 17 front ends in the middle part of connector, and the connector middle part 17 is offered matches with the first through hole 19
The second through-hole 20 used is closed, unidirectional valve seal 8, the check valve sealing are slidably provided in second through-hole 20
8 front end of part is provided with the conical head 21 being used cooperatively with the conical opening 15, is arranged with the 4th O-ring on the conical head 21
22, unidirectional 8 rear end of valve seal is provided with compressed spring 23；After 17 in the middle part of 18 front end of connector rear portion and the connector
End connection, the connector rear portion 18 offer the third through-hole 26 with second through-hole 20 perforation.
The quick coupling daughter 50 further includes the first O-ring 27, and first O-ring 27 is set in the mandril front
The front end of 2a.
The second half section of the mandril front 2a is provided with the first positive stop lug boss being used cooperatively with 6 front end of lock-on connection
28；13 front inner wall of lock sleeve is provided with the second positive stop lug boss 29 being used cooperatively with first positive stop lug boss 28；Institute
13 second half section of lock sleeve inner wall is stated to connect with 6 outer wall thread of lock-on connection.
The lock-on connection 6 includes locking leading portion 30, locking middle section 31 and locking back segment 32,13 second half section of lock sleeve
Inner wall is threadedly coupled with the locking leading portion 30, and the back segment of the locking leading portion 30 is connect with the front end in the locking middle section 31,
The diameter of the locking leading portion 30 is less than the diameter in the locking middle section 31,32 front end of locking back segment and the locking middle section
The connection of 31 back segments, the diameter of the locking back segment 32 are less than the diameter of the locking leading portion 30, and the connector front 16 is set in
On the locking back segment 32.
The connector front 16 is provided with the second O-ring 33 with 32 junction of locking back segment.
The inner wall of the second channel 9, which is provided with, offers a circle mounting groove 35, is provided with the 3rd O in the mounting groove 35
Type circle 36 and Sealing shield ring 37.
The lock sleeve 13 is connect with the lock-on connection 6 by positioning pin 38.
Second through-hole 20 includes the limit hole 39 and location hole 500 that center line is overlapped and is mutually communicated, the limit
Between the first through hole 19 and the location hole 500, the diameter of the limit hole 39 is greater than the location hole 500 in hole 39
Diameter；
One end of the compressed spring 23 is fixed on the junction of the location hole 500 and the third through-hole 26, described
The other end of compressed spring 23 and the conical head 21, connection, the conical head 21 can be in the limit hole 39 and described first
Sliding in through-hole 19.
The first passage 3 include be mutually communicated first perforation 3a, second perforation 3b and third perforation 3c, described first
Perforation 3a is provided on the mandril front 2a, the center line of the first perforation 3a and the center line weight of the mandril front 2a
It closes；
The second perforation 3b is provided with 2b in the middle part of the mandril, the second perforation 3b and the mandril middle part center 2b
Line is overlapped, and the diameter of the second perforation 3b is less than the diameter of the first perforation 3a；The Five-channel 5 is worn with described second
Hole 3b perforation；
Third perforation 3c is provided with the mandril rear portion 2c and extends and described the to the rear end 2b in the middle part of the mandril
Two perforation 3b perforations, the third perforation 3c are overlapped with the mandril rear portion 2c center line, and the diameter of the third perforation 3c is small
In the diameter of the second perforation 3b.
The unidirectional valve seal 8 includes attachment base 60 and conical head 21, and 60 rear end of attachment base offers groove body 61,
One end of the compressed spring 23 is fixed on the junction of second through-hole 20 and the third through-hole 26, the compression bullet
The other end of spring 23 is fixed in the groove body 61, the attachment base 60 be slidably disposed in second through-hole 20 and with
Second through-hole 20 is bonded very much；Conical head 21, the attachment base 60 and the conical head is arranged in the front end of the attachment base 60
21 junctions offer the pipeline 62 with second through-hole 20 and the perforation of the first through hole 19.
The utility model is combined into quick coupling daughter by the first O-ring 27 and mandril 2, and remaining part is combined into
Quick coupling parent.20 ° of release lock sleeves 13 of dextrorotation when needing pipeline connection, assembly insertion is locked after mandril 2 is inserted in daughter
Second channel 9 and third channel 10 in tight coupling 6, left-handed 20 ° allow daughter closely to connect with parent, and medium is from third through-hole 26
First passage 3 is flowed to, when pipeline being needed to disconnect, revolves 20 ° of release lock sleeves 13, medium and compressed spring 23 push check valve close
Sealing 8 cooperatively forms the first sealant by conical head 21 and conical opening 15, realizes the second sealing by the 4th O-ring 22
Layer, to realize double-layer seal.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of check valve quick coupling, it is characterized in that: including quick coupling daughter (50) and quick coupling parent (100)；
The quick coupling daughter (50) includes mandril (2), and the mandril (2) includes mandril front (2a), mandril middle part (2b)
With mandril rear portion (2c), the rear end of the mandril front (2a) is connect with front end (2b) in the middle part of the mandril, in the middle part of the mandril
The rear end (2b) is connect with mandril rear portion (2c) front end；
(2b) includes front half section (2b1) and mandril middle part second half section (2b2) in the middle part of mandril in the middle part of the mandril；The mandril front
The diameter of (2a) is greater than the diameter of front half section (2b1) in the middle part of the mandril, and the diameter of front half section (2b1) is greater than in the middle part of the mandril
The diameter of the diameter of second half section (2b2) in the middle part of the mandril, mandril middle part second half section (2b2) is greater than the mandril rear portion
The diameter of (2c)；
The mandril front (2a), (2b) and the coincidence of mandril rear portion (2c) center line and offering is mutually communicated in the middle part of mandril the
One channel (3)；The outer wall of second half section (2b2) offers Five-channel (5) in the middle part of the mandril, the Five-channel (5) and institute
State first passage (3) perforation；
The quick coupling parent (100) includes lock-on connection (6), fitting body (7) and unidirectional valve seal (8), along the lock
Tight coupling (6) center line offers second channel (9) and third channel (10), and (2b) is slidably seated in institute in the middle part of the mandril
It states in second channel (9), front half section (2b1) is bonded with the inner wall of the second channel (9) in the middle part of the mandril, in the mandril
Portion's second half section (2b2) outer wall and the inner wall of the second channel (9) form fourth lane (12)；The mandril (2) and the lock
Tight coupling (6) is detachably connected by lock sleeve (13)；Third channel (10) front end and the second channel (9) penetrate through,
Third channel (10) open rearward end becomes larger to be formed conical opening (15) from front to back, and the mandril rear portion (2c) is slidably
Be located at the third channel (10) in；
The fitting body (7) includes connector front (16), connector middle part (17) and connector rear portion (18), the connector front (16)
It offers first through hole (19), the connector front (16) is set in the lock-on connection by the front half section of first through hole (19)
(6) on latter half of, the rear end of the connector front (16) is connect with (17) front end in the middle part of connector, and (17) open up in the middle part of the connector
There is the second through-hole (20) being used cooperatively with the first through hole (19), is slidably provided with list in second through-hole (20)
To valve seal (8), unidirectional valve seal (8) front end is provided with the conical head being used cooperatively with the conical opening (15)
(21), the 4th O-ring (22) is arranged on the conical head (21), unidirectional valve seal (8) rear end is provided with compression bullet
Spring (23)；Connector rear portion (18) front end is connect with (17) rear end in the middle part of the connector, and the connector rear portion (18) offers
With the third through-hole (26) of second through-hole (20) perforation.
2. check valve quick coupling as described in claim 1, it is characterized in that: the quick coupling daughter (50) further includes first
O-ring (27), first O-ring (27) are set in the front end of the mandril front (2a).
3. check valve quick coupling as described in claim 1, it is characterized in that: the second half section of the mandril front (2a) is provided with
The first positive stop lug boss (28) being used cooperatively with the lock-on connection (6) front end；Lock sleeve (13) front inner wall is provided with
The second positive stop lug boss (29) being used cooperatively with first positive stop lug boss (28)；Lock sleeve (13) the second half section inner wall and institute
State the connection of lock-on connection (6) outer wall thread.
4. check valve quick coupling as claimed in claim 3, it is characterized in that: the lock-on connection (6) includes locking leading portion
(30), middle section (31) and locking back segment (32), lock sleeve (13) the second half section inner wall and locking leading portion (30) spiral shell are locked
Line connection, the back segment of locking leading portion (30) are connect with the front end of locking middle section (31), locking leading portion (30)
Diameter is less than the diameter of locking middle section (31), and the locking back segment (32) front end and the locking middle section (31) back segment connect
It connects, the diameter of locking back segment (32) is less than the diameter of locking leading portion (30), and the connector front (16) is set in institute
It states in locking back segment (32).
5. check valve quick coupling as claimed in claim 3, it is characterized in that: the connector front (16) and the locking back segment
(32) junction is provided with the second O-ring (33).
6. check valve quick coupling as described in claim 1, it is characterized in that: the inner wall of the second channel (9) is provided with out
Equipped with circle mounting groove (35), third O-ring (36) and Sealing shield ring (37) are provided in the mounting groove (35).
7. check valve quick coupling as described in claim 1, it is characterized in that: the lock sleeve (13) and the lock-on connection
(6) it is connected by positioning pin (38).
8. check valve quick coupling as described in claim 1, it is characterized in that: second through-hole (20) includes that center line is overlapped
And the limit hole (39) and location hole (500) being mutually communicated, the limit hole (39) are located at the first through hole (19) and described
Between location hole (500), the diameter of the limit hole (39) is greater than the diameter of the location hole (500)；
One end of the compressed spring (23) is fixed on the junction of the location hole (500) and the third through-hole (26), institute
The other end and the conical head (21) of compressed spring (23) are stated, connection, the conical head (21) can be in the limit hole (39)
With sliding in the first through hole (19).
9. check valve quick coupling as described in claim 1, it is characterized in that: the first passage (3) includes being mutually communicated
First perforation (3a), the second perforation (3b) and third perforation (3c), first perforation (3a) are provided with the mandril front
On (2a), the center line of first perforation (3a) is overlapped with the center line of the mandril front (2a)；
Second perforation (3b) is provided in the middle part of the mandril (2b), in the middle part of second perforation (3b) and the mandril (2b)
Center line is overlapped, and the diameter of second perforation (3b) is less than the diameter of first perforation (3a)；The Five-channel (5) with
Second perforation (3b) perforation；
Third perforation (3c) be provided with the mandril rear portion (2c) and to the rear end (2b) in the middle part of the mandril extend with it is described
Second perforation (3b) perforation, the third perforation (3c) are overlapped with mandril rear portion (2c) center line, the third perforation
The diameter of (3c) is less than the diameter of second perforation (3b).
10. check valve quick coupling as described in any one of claim 1 to 9, it is characterized in that: the unidirectional valve seal (8) wraps
Attachment base (60) and conical head (21) are included, attachment base (60) rear end offers groove body (61), the compressed spring (23)
One end is fixed on the junction of second through-hole (20) and the third through-hole (26), the other end of the compressed spring (23)
It is fixed in the groove body (61), the attachment base (60) is slidably disposed in second through-hole (20) and with described the
Two through-holes (20) are bonded very much；Conical head (21) are arranged in the front end of the attachment base (60), the attachment base (60) and the taper
Head (21) junction offers the pipeline (62) with second through-hole (20) and the first through hole (19) perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821544371.6U CN208935479U (en) | 2018-09-20 | 2018-09-20 | Check valve quick coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821544371.6U CN208935479U (en) | 2018-09-20 | 2018-09-20 | Check valve quick coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935479U true CN208935479U (en) | 2019-06-04 |
Family
ID=66721846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821544371.6U Active CN208935479U (en) | 2018-09-20 | 2018-09-20 | Check valve quick coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935479U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953693A (en) * | 2018-09-20 | 2018-12-07 | 重庆九环机电有限公司 | A kind of check valve quick coupling |
-
2018
- 2018-09-20 CN CN201821544371.6U patent/CN208935479U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953693A (en) * | 2018-09-20 | 2018-12-07 | 重庆九环机电有限公司 | A kind of check valve quick coupling |
| CN108953693B (en) * | 2018-09-20 | 2024-04-12 | 重庆九环机电有限公司 | Quick joint of one-way valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 400700 15-1, No. 6, Fengqi Road, caijiagang Town, Beibei District, Chongqing Patentee after: CHONGQING JIUHUAN MACHINERY & ELECTRIC Co.,Ltd. Address before: 400000 No.1 Xinmao Road, Beibei District, Chongqing (Free Trade Zone) Patentee before: CHONGQING JIUHUAN MACHINERY & ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |