CN208723236U - Patch board - Google Patents
Patch board Download PDFInfo
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- CN208723236U CN208723236U CN201821227407.8U CN201821227407U CN208723236U CN 208723236 U CN208723236 U CN 208723236U CN 201821227407 U CN201821227407 U CN 201821227407U CN 208723236 U CN208723236 U CN 208723236U
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- Prior art keywords
- magnetic
- jack
- wiring board
- plug
- drive rod
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- 238000003780 insertion Methods 0.000 claims description 45
- 230000037431 insertion Effects 0.000 claims description 45
- 230000007935 neutral effect Effects 0.000 claims description 19
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a patch board, include: the power plug comprises a shell (1), a power plug (2) and at least one socket assembly (3), wherein each socket assembly (3) comprises a contact set (31), a relay (32), a magnetic switch (33), a magnetic piece (34) and an elastic piece (35), and the relay (32) comprises a control piece (321) and a controlled switch (334); the at least one socket component (3) is arranged inside the shell (1), and at least one jack group (11) is arranged on the shell (1); the contact set (31) is electrically connected with the power plug (2), and the controlled switch (334) is arranged on a connecting circuit between the contact set (31) and the power plug (2); the control element (321) is electrically connected with the power plug (2), and the magnetic control switch (33) is arranged on a connecting circuit of the control element (321) and the power plug (2); the magnetic member (34) is disposed inside the housing (1). Adopt the utility model discloses, can improve the security of wiring board.
Description
Technical field
The utility model relates to technical field of electric appliances, especially a kind of wiring board.
Background technique
With the development of science and technology, the demand in life about electric power is gradually increased.Wiring board generally may be used during we are daily
The application facility seen.
Currently, commonly used plug wire plate surface is provided with jack, each jack is internally provided with contact, contact and plug wire
The attaching plug of plate is electrically connected.When attaching plug is inserted on corresponding power supply, it is electrically connected with the inserted sheet of attaching plug
Contact is at electriferous state, in this way, the plug of various electrical equipments can be inserted into jack, electrical equipment can be normal
It uses.
In the process of implementing the utility model, the inventor finds that the existing technology has at least the following problems:
Hand or metal object may be inserted into the jack of wiring board by children, be in electrification with what is be arranged inside jack
The contact pad of state causes to get an electric shock, and therefore, the safety of wiring board is poor.
Utility model content
In order to solve problems in the prior art, present disclose provides a kind of patch board devices.The patch board device technology
Scheme is as follows:
The embodiment of the present disclosure provides a kind of wiring board, the wiring board include shell 1, attaching plug 2 and at least one
Jack assemblies 3, in which:
Each jack assemblies 3 include contact group 31, relay 32, magnetic switch 33, magnetic part 34 and elastic component 35, work as magnetic
When property part 34 is located within the scope of the magnetic control of magnetic switch 33, magnetic switch 33 is in closed state, when magnetic part 34 is not at
When within the scope of the magnetic control of magnetic switch 33, magnetic switch 33 is in an off state；
Relay 32 includes control piece 321 and controlled switch 334, and when control piece 321 is powered, controlled switch 334 is in
Closed state, when control piece 321 powers off, controlled switch 334 is in an off state；
At least one jack assemblies 3 is set to inside shell 1, at least one insertion hole groups 11 is provided on shell 1, each to insert
The position of hole group 11 is corresponding with a contact group 31 respectively；
Contact group 31 and attaching plug 2 are electrically connected, and are controlled switch 334 and are arranged between contact group 31 and attaching plug 2
Connection line on；
Control piece 321 and attaching plug 2 are electrically connected, and the company of control piece 321 Yu attaching plug 2 is arranged in magnetic switch 33
On link；
Magnetic part 34 is arranged inside shell 1, and when being inserted into plug in insertion hole groups 11, magnetic part 34 is pushed away the plug
Power effect is lower to be located at first position, and when being not inserted into plug in insertion hole groups 11, magnetic part 34 is under the elastic force effect of elastic component 35
Positioned at the second position, the first position is located within the scope of the magnetic control of magnetic switch 33, and the second position is located at magnetic switch
Outside 33 magnetic control range.
Optionally, contact group 31 includes live blade 311, neutral blade 312 and ground wire contact 313, and insertion hole groups 11 include
Firewire jack 111, zero line jack 112 and ground wire jack 113, the position of live blade 311, neutral blade 312 and ground wire contact 313
It sets corresponding with firewire jack 111, zero line jack 112 and ground wire jack 113 respectively.
Optionally, attaching plug 2 includes live prong 21, zero line pin 22 and earth pin 23.
Optionally, live prong 21, zero line pin 22 and earth pin 23 respectively with live blade 311, neutral blade 312
And ground wire contact 313 is electrically connected.
Optionally, the relay 32 is electromagnetic relay.
Optionally, the magnetic switch 33 is tongue tube, and the magnetic part 34 is tongue tube magnetic pole.
Optionally, each jack assemblies 3 further include drive rod 36, and drive rod 36 is mounted on bracket fixed inside shell 1
On, drive rod 36 can prolong on the bracket to slide axially, and magnetic part 34 is fixed on the first end of drive rod 36, drive rod 36
Second end position it is corresponding with any jack in insertion hole groups 11, the second end of drive rod 36 be provided with towards institute it is any insert
The inclined-plane in hole, drive rod 36 and the direction of insertion of any jack are perpendicular；When being inserted into plug in insertion hole groups 11, drive rod
Magnetic part 34 is pushed into first position under the thrust of the plug by 36.
Optionally, the first end of elastic component 35 is fixed on the bracket, and the second end of elastic component 35 is fixed on magnetic part
On 34.
Optionally, elastic component 35 is spring.
Optionally, drive rod 36 passes through the spring.
Optionally, any jack is ground wire jack.
In conclusion the utility model not only reduces the complexity for pulling up attaching plug, also pass through cutting electricity immediately
The safety of wiring board can be improved in source.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
Attached drawing herein is incorporated into specification and constitutes a part of this explanation, show ans embodiment consistent with the present disclosure,
And together with specification for explaining the principles of this disclosure.In the accompanying drawings:
Fig. 1 is the external structure according to a kind of wiring board for implementing to exemplify；
Fig. 2 is the electrical schematic diagram according to a kind of jack assemblies 3 for implementing to exemplify；
Marginal data
1, shell 2, attaching plug
3, jack assemblies 11, insertion hole groups
111, firewire jack 112, zero line jack
113, ground wire jack 21, live prong
22, zero line pin 23, earth pin
31, contact group 32, relay
33, magnetic switch 34, magnetic part
35, elastic component 36, drive rod
311, live blade 312, neutral blade
313, ground wire contact 321, control piece
334, it is controlled switch
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
The embodiment of type is described in further detail.
The utility model embodiment provides a kind of wiring board, as shown in Figure 1, the wiring board include shell 1, power supply insert
First 2 and at least one jack assemblies 3, in which:
As shown in Fig. 2, each jack assemblies 3 include contact group 31, relay 32, magnetic switch 33, magnetic part 34 and bullet
Property part 35, when magnetic part 34 is located within the scope of the magnetic control of magnetic switch 33, magnetic switch 33 is in closed state, works as magnetic part
34 when being not within the scope of the magnetic control of magnetic switch 33, and magnetic switch 33 is in an off state.Relay 32 includes control piece
321 are controlled switch 334 and are in closed state with controlled switch 334 when control piece 321 is powered, when control piece 321 powers off,
Controlled switch 334 is in an off state.At least one jack assemblies 3 is set to inside shell 1, and at least one is provided on shell 1
A insertion hole groups 11, the position of each insertion hole groups 11 are corresponding with a contact group 31 respectively.Contact group 31 and attaching plug 2 are electrically
Connection, controlled switch 334 are arranged in the connection line between contact group 31 and attaching plug 2.Control piece 321 and attaching plug
2 are electrically connected, and magnetic switch 33 is arranged in the connection line of control piece 321 and attaching plug 2.Magnetic part 34 is arranged in shell
Inside 1, when being inserted into plug in insertion hole groups 11, magnetic part 34 is located at first position under the thrust of the plug, when slotting
When being not inserted into plug in hole group 11, magnetic part 34 is located at the second position, the first position under the elastic force effect of elastic component 35
Within the scope of the magnetic control of magnetic switch 33, the second position is located at outside the magnetic control range of magnetic switch 33.
Wherein, relay 32 can be selected arbitrarily according to actual needs, such as electromagnetic relay.Magnetic switch 33 can root
It is arbitrarily selected according to actual demand, such as tongue tube, magnetic part 34 can be selected arbitrarily according to actual needs, such as tongue tube magnetic pole
Deng.Elastic component 35 can be selected arbitrarily according to actual needs, such as spring.The present embodiment with relay 32 is electromagnetic relay,
Magnetic switch 33 is tongue tube magnetic pole, magnetic part 34 is tongue tube magnetic pole, elastic component 35 is progress scheme explanation for spring,
Its situation is similar therewith, and embodiment is not repeated.
In an implementation, the shell 1 of wiring board is that plastic material is connected with attaching plug 2, shell 1 and electricity outside shell 1
Conducting wire is provided between source plug 2, conducting wire one end and attaching plug 2 are electrically connected, the device electric inside the other end and shell 1
Connection.Shell is equipped at least one insertion hole groups 11.Inside shell 1, each insertion hole groups 11 have been respectively arranged below one
Jack assemblies 3, each jack of insertion hole groups 11 and each contact of jack assemblies 3 respectively correspond.On the plug of electrical equipment
It, will be with contact pad after pin is inserted into jack.Relay 32 can be electromagnetic relay, and control piece 321 can be relay line
Circle, being controlled switch 334 can combine for relay contact.It is corresponding that relay coil with relay contact combines position.Relay
Device contact combination is always-on.Whenever having electric current by relay coil, relay coil can generate induced magnetic field, control after
Appliance contact combination closure.
Pin one side and each contact pad, another party when the plug of electrical equipment is inserted into insertion hole groups 11, on plug
Face will push the movement of magnetic part 34, and thrust is contrary with elastic force of the elastic component 35 to magnetic part 34, and thrust is greater than elastic force, magnetic
Part 34 is close to magnetic switch 33 under the force action of thrust and elastic force, is moved to first position always, first position be
Within the scope of the magnetic control of magnetic switch 33, at this point, under the magnetic force, the switch contact in magnetic switch 33 is by discrete state
Become contact condition, magnetic switch 33 is closed, and the magnetic induction coil of relay 32 is powered, and magnetic induction coil generates magnetic field, and right
The contact combination of relay 32 generates gravitation, and the contact combination of relay 32 is closed, and contact group 31 is corresponding with attaching plug 2
Pin is electrical connected, and contact group 31 is powered, and the pin on the plug of electrical equipment is powered, and electrical equipment can use.
When the plug of electrical equipment extracts insertion hole groups 11, the pin on plug is separated with each contact, magnetic part 34 only by
Elastic force to elastic component 35 acts on, and magnetic part 34, far from magnetic switch 33, is moved to always the second position under the action of elastic force,
The second position be outside the magnetic control range of magnetic switch 33, at this point, due to the effect for losing magnetic force, opening in magnetic switch 33
Closing contact becomes discrete state from contact condition, and magnetic switch 33 disconnects, the magnetic induction coil power-off of relay 32, relay 32
Contact combination disconnect, contact group 31 powers off, and the pin power-off on the plug of electrical equipment, electrical equipment cannot use.
User uses the wiring board of the present embodiment, does not pull out the attaching plug 2 of wiring board, only pulls out the plug of electric appliance, just
It can be realized real-time power-off.
Optionally, contact group 31 includes live blade 311, neutral blade 312 and ground wire contact 313, and insertion hole groups 11 include
Firewire jack 111, zero line jack 112 and ground wire jack 113, the position of live blade 311, neutral blade 312 and ground wire contact 313
It sets corresponding with firewire jack 111, zero line jack 112 and ground wire jack 113 respectively.
In an implementation, a contact group 31 and 11 position of insertion hole groups are corresponding, the live blade in the contact group 31
311, neutral blade 312, ground wire contact 313 position respectively in the insertion hole groups 11 firewire jack 111, zero line jack 112,
Ground wire jack 113 is corresponding, and live blade 311 is located at the lower section of firewire jack 111, and neutral blade 312 is located at zero line jack 112
Lower section, ground wire contact 313 is located at the lower section of ground wire jack 113.In this way, when any plug is inserted into insertion hole groups 11, fire
Line pin insertion firewire jack 111 is contacted with live blade 311, and zero line pin insertion zero line jack 112 connects with neutral blade 312
Touching, earth pin insertion ground wire jack 113 are contacted with ground wire contact 313.When any plug extracts insertion hole groups 11, firewire
Pin is extracted firewire jack 111 and is separated with live blade 311, and zero line pin is extracted zero line jack 112 and divided with neutral blade 312
From earth pin insertion ground wire jack 113 is separated with ground wire contact 313.
Optionally, attaching plug 2 includes live prong 21, zero line pin 22 and earth pin 23.
Wherein, live prong 21, zero line pin 22 and earth pin 23 respectively with live blade 311, neutral blade 312 and
Ground wire contact 313 is electrically connected.
In an implementation, user wants to use electric appliance, attaching plug 2 first can be inserted into power supply, the firewire of attaching plug 2 is inserted
Foot 21, zero line pin 22 and earth pin 23 are powered, live blade 311, neutral blade 312 and the ground being at this moment electrically connected
Line contact 313 is also powered.
After user is inserted into attaching plug, appliance plug is inserted into insertion hole groups 11.At this moment, the pin of appliance plug inserts insertion
Firewire jack 111, zero line jack 112 and the ground wire jack 113 of hole group 11, and with live blade 311, neutral blade 312 and ground
Line contact 313 is electrically connected.
Optionally, each jack assemblies 3 further include drive rod 36, and drive rod 36 is mounted on bracket fixed inside shell 1
On, drive rod 36 can prolong on bracket to slide axially, and magnetic part 34 is fixed on the first end of drive rod 36, and the of drive rod 36
The position at two ends is corresponding with any jack in insertion hole groups 11, and the second end of drive rod 36 is provided with towards the oblique of the jack
Face, drive rod 36 and the direction of insertion of the jack are perpendicular, and when being inserted into plug in insertion hole groups 11, drive rod 36 is pushed away plug
Magnetic part 34 is pushed into first position under power effect.
In an implementation, the first end of elastic component 35 is fixed on bracket, and the second end of elastic component 35 is fixed on magnetic part 34
On.Drive rod 36 passes through elastic component 35.There are two types of form, two jacks and three jacks for the jack of wiring board insertion hole groups 11.If passed
The material of lever 36 is non-conductive, then the two of jack kind form can make any jack opposite with the position of the second end of drive rod 36
It answers.If the materials conductive of drive rod 36, the first, jack is two jack forms, then enables the position of the second end of drive rod 36
It is corresponding with zero line jack 112.Second, jack is three jack forms, then enables position and the ground wire of the second end of drive rod 36
Jack 113 or zero line jack 112 are corresponding.The present embodiment enables the position of the second end of drive rod 36 and ground wire jack 113 opposite
It answers.
When the plug of electrical equipment is inserted into insertion hole groups 11, the earth pin on plug on the one hand will be with ground wire contact 313
On the other hand contact will push drive rod 36.The second end of drive rod 36 is provided with the inclined-plane towards jack, when the ground on plug
When line pin is inserted into insertion hole groups 11, the earth pin and the contact of incline plane towards jack, and applied by the inclined-plane to drive rod 36
Add and passes on the axial thrust of lever 36.Thrust of the drive rod 36 by earth pin 113.Drive rod 36 is in earth pin 113
It is moved horizontally under thrust.Drive rod 36 will push the magnetic part 34 fixed with the first end of drive rod 36, magnetic part 34 by
The elastic force generated to the thrust of drive rod 36 and 35 deformation of elastic component, under the action of resultant force, magnetic part 34 is to magnetic switch 33
Direction is mobile, is moved to first position.After plug is fully inserted into, under the elastic force effect of elastic component 35, the second of drive rod 36
End withstands on the side of earth pin.
For magnetic part 34 at first position, the attraction of the contact part of magnetic switch 33 is greater than the reed of magnetic switch 33
Elastic force, the switch contact in magnetic switch 33 become contact condition from discrete state, and magnetic switch 33 is closed, the magnetic of relay 32
Induction coil is powered, and due to the effect of electromagnetic induction, the contact combination of relay 32 is closed, the live prong 21 of attaching plug,
Zero line pin 22 and the live blade 311 of earth pin 23 and contact group 31, neutral blade 312 and 313 circuit of ground wire contact connect
It connects, live blade 311, neutral blade 312 and the ground wire contact 313 of contact group 31 are powered, the pin on the plug of electrical equipment
It is powered, electrical equipment can be used.
When the plug of electrical equipment extracts insertion hole groups 11, the earth pin on plug extracts insertion hole groups 11, on plug
Earth pin is separated with the inclined-plane towards jack, and drive rod 36 is disappeared by the thrust of earth pin 113, and magnetic part 34 is passed
The thrust of lever 36 disappears, the elastic force that magnetic part 34 is only generated by 35 deformation of elastic component, under the action of elastic force, magnetic part 34
To far from the movement of 33 direction of magnetic switch, it is moved to the second position.After plug is extracted completely, the second end of drive rod 36 is in ground wire
The position of jack 113.
For magnetic part 34 at the second position, the attraction of the contact part of magnetic switch 33 is less than the reed of magnetic switch 33
Elastic force, the switch contact in magnetic switch 33 become discrete state from contact condition, and magnetic switch 33 disconnects, the magnetic of relay 32
Induction coil power-off, due to the effect of electromagnetic induction, the contact combination of relay 32 is disconnected, the live prong 21 of attaching plug,
Zero line pin 22 and the live blade 311 of earth pin 23 and contact group 31, neutral blade 312 and ground wire contact 313 disconnect, touching
Live blade 311, neutral blade 312 and the ground wire contact 313 of piece group 31 power off, the pin power-off on the plug of electrical equipment,
Electrical equipment cannot use.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (11)
1. a kind of wiring board, which is characterized in that the wiring board includes shell (1), attaching plug (2) and at least one socket group
Part (3), in which:
Each jack assemblies (3) include contact group (31), relay (32), magnetic switch (33), magnetic part (34) and elastic component
(35), when magnetic part (34) is located within the scope of the magnetic control of magnetic switch (33), magnetic switch (33) is in closed state, works as magnetic
When property part (34) is not within the scope of the magnetic control of magnetic switch (33), magnetic switch (33) is in an off state；
Relay (32) includes that control piece (321) and controlled switch (334) are controlled switch when control piece (321) are powered
(334) it is in closed state, when control piece (321) power-off, controlled switch (334) is in an off state；
At least one jack assemblies (3) is set to shell (1) inside, is provided at least one insertion hole groups (11) on shell (1), often
The position of a insertion hole groups (11) is corresponding with one contact group (31) respectively；
Contact group (31) and attaching plug (2) are electrically connected, and are controlled switch (334) and are arranged in contact group (31) and attaching plug
(2) in the connection line between；
Control piece (321) and attaching plug (2) are electrically connected, and magnetic switch (33) is arranged in control piece (321) and attaching plug
(2) in connection line；
Magnetic part (34) setting is internal in shell (1), and when insertion plug in insertion hole groups (11), magnetic part (34) is in the plug
Thrust under be located at first position, when being not inserted into plug in insertion hole groups (11), magnetic part (34) is in elastic component (35)
Elastic force effect is lower to be located at the second position, and the first position is located within the scope of the magnetic control of magnetic switch (33), the second position
Outside the magnetic control range of magnetic switch (33).
2. wiring board according to claim 1, which is characterized in that contact group (31) includes live blade (311), zero curve touching
Piece (312) and ground wire contact (313), insertion hole groups (11) include firewire jack (111), zero line jack (112) and ground wire jack
(113), the position of live blade (311), neutral blade (312) and ground wire contact (313) respectively with firewire jack (111), zero
Line jack (112) and ground wire jack (113) are corresponding.
3. wiring board according to claim 2, which is characterized in that attaching plug (2) include live prong (21), zero curve insert
Foot (22) and earth pin (23).
4. wiring board according to claim 3, which is characterized in that live prong (21), zero line pin (22) and ground wire are inserted
Foot (23) is electrically connected with live blade (311), neutral blade (312) and ground wire contact (313) respectively.
5. wiring board according to claim 1, which is characterized in that the relay (32) is electromagnetic relay.
6. wiring board according to claim 1, which is characterized in that the magnetic switch (33) is tongue tube, the magnetism
Part (34) is tongue tube magnetic pole.
7. wiring board according to claim 1, which is characterized in that each jack assemblies (3) further include drive rod (36), are passed
Lever (36) is mounted on bracket fixed inside shell (1), and drive rod (36) can prolong on the bracket to slide axially, magnetic
Property part (34) is fixed on the first end of drive rod (36), position and any in insertion hole groups (11) of the second end of drive rod (36)
Jack is corresponding, the second end of drive rod (36) be provided with towards any jack inclined-plane, drive rod (36) with it is described any
The direction of insertion of jack is perpendicular；
When insertion plug in insertion hole groups (11), magnetic part (34) is pushed by drive rod (36) under the thrust of the plug
First position.
8. wiring board according to claim 7, which is characterized in that the first end of elastic component (35) is fixed on the bracket
On, the second end of elastic component (35) is fixed on magnetic part (34).
9. wiring board according to claim 8, which is characterized in that elastic component (35) is spring.
10. wiring board according to claim 9, which is characterized in that drive rod (36) passes through the spring.
11. wiring board according to claim 7, which is characterized in that any jack is ground wire jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821227407.8U CN208723236U (en) | 2018-08-01 | 2018-08-01 | Patch board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821227407.8U CN208723236U (en) | 2018-08-01 | 2018-08-01 | Patch board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208723236U true CN208723236U (en) | 2019-04-09 |
Family
ID=65975629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821227407.8U Active CN208723236U (en) | 2018-08-01 | 2018-08-01 | Patch board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208723236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864737A (en) * | 2021-02-03 | 2021-05-28 | 中国电建集团贵州电力设计研究院有限公司 | Waterproof power connector |
| CN113425937A (en) * | 2021-07-30 | 2021-09-24 | 新疆医科大学第四附属医院 | Safety type vein puncture needle |
-
2018
- 2018-08-01 CN CN201821227407.8U patent/CN208723236U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864737A (en) * | 2021-02-03 | 2021-05-28 | 中国电建集团贵州电力设计研究院有限公司 | Waterproof power connector |
| CN113425937A (en) * | 2021-07-30 | 2021-09-24 | 新疆医科大学第四附属医院 | Safety type vein puncture needle |
| CN113425937B (en) * | 2021-07-30 | 2023-04-07 | 新疆医科大学第四附属医院 | Safe type vein pjncture needle |
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