CN217270802U - Pump device - Google Patents
Pump device Download PDFInfo
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- CN217270802U CN217270802U CN202220344134.5U CN202220344134U CN217270802U CN 217270802 U CN217270802 U CN 217270802U CN 202220344134 U CN202220344134 U CN 202220344134U CN 217270802 U CN217270802 U CN 217270802U
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- main body
- axial direction
- motor
- pump
- body portion
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Abstract
A pump device is provided, which can help to restrain the vibration of a control substrate and improve the universality of the constituent parts of an inverter housing. The utility model discloses a pump unit includes: a motor having a rotor and a stator; a pump provided on one side of the motor in an axial direction and driven by the motor; and a control substrate provided on the other side of the motor in the axial direction and provided with an inverter circuit for controlling the motor, wherein the control substrate further comprises: a motor housing that houses the motor; and an inverter case that houses the control substrate, the inverter case including: a main body portion that is detachably fixed to the other side of the motor case in the axial direction, has a cylindrical shape extending in the axial direction and surrounding the control board from the outer peripheral side, and fixes the control board; and a cover portion that is detachably fixed to the main body portion and blocks the opening on the other side in the axial direction of the main body portion, wherein the pump device is fixed to the body to be attached via the main body portion.
Description
Technical Field
The utility model relates to a pump device.
Background
Further, the above pump device further includes: a motor housing that houses the motor; and an inverter case that houses the control board and is fixed to the other side of the motor case in the axial direction.
Documents of the prior art
Patent document 1: japanese patent No. 5913028
However, since the pump device is used with one side in the axial direction (i.e., the side opposite to the control board with respect to the motor) fixed to a mounting object such as a vehicle, the control board is likely to vibrate due to the vibration of the motor.
In the pump device, depending on the object to be mounted, etc., the shape of the inverter housing (usually, the shape of the other side portion in the axial direction of the inverter housing) may need to be changed.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a pump device which contributes to suppression of vibration of a control substrate and improvement of versatility of an inverter housing component.
In order to achieve the above object, the present invention provides a pump device, including: a motor having a rotor and a stator; a pump provided on one side of the motor in an axial direction and driven by the motor; and a control substrate provided on the other side of the motor in the axial direction and provided with an inverter circuit for controlling the motor, wherein the control substrate further comprises: a motor housing that houses the motor; and an inverter case that houses the control substrate, the inverter case including: a main body portion that is detachably fixed to the other side of the motor case in the axial direction, has a tubular shape extending in the axial direction and surrounding the control board from the outer peripheral side, and fixes the control board; and a cover portion that is detachably fixed to the main body portion and blocks an opening on the other side of the main body portion in the axial direction, wherein the pump device is fixed to an attached body via the main body portion.
According to the pump apparatus of the present invention, the inverter case includes the main body portion that fixes the control substrate, and the pump apparatus is fixed to the body to be mounted via the main body portion, and therefore, unlike the case where the pump apparatus is fixed to the body to be mounted via a portion away from the control substrate, it is helpful to suppress vibration of the control substrate; further, since the inverter case includes the main body portion which is in a tubular shape extending in the axial direction and surrounding the control board from the outer peripheral side, and the cover portion which is fixed to the main body portion in a detachable state and closes the opening on the other side in the axial direction of the main body portion, even if the shape of the other side portion in the axial direction of the inverter case needs to be changed depending on the mounted body, only the cover portion of the inverter case needs to be replaced without replacing the entire inverter case, and the versatility of the inverter case constituent portion can be improved, and the change cost can be reduced.
In the pump device of the present invention, it is preferable that the main body portion has a pump device fixing portion protruding toward the outer peripheral side, the pump device fixing portion is provided with a first through hole, and the pump device is fixed to the body to be attached via a first fastening member inserted into the first through hole.
According to the utility model discloses a pump device, main part have the outstanding pump device fixed part towards week side, and pump device fixed part is equipped with first through-hole, and pump device is fixed in the installed body via the first fastening component that inserts first through-hole, and consequently, the main part is fixed with external connection via pump device fixed part easily.
In the pump device of the present invention, it is preferable that the pump device further includes a mounting member that is formed in a tubular shape extending in the axial direction and is fitted over the main body portion, and the main body portion is fixed to the mounted body via the mounting member.
According to the utility model discloses a pump unit still has the installation component, and the installation component is along the tube-shape of axial extension, and the main part is located to the cover, and the main part is fixed in the installed body via the installation component, consequently, can utilize the installation component to consolidate the main part to can utilize the installation component to improve pump unit's installation degree of freedom.
Further, in the pump device of the present invention, it is preferable that the main body portion has a pump device fixing portion protruding toward the outer peripheral side, the pump device fixing portion is provided with a first through hole, the main body portion is fixed to the mounting part via a first fastening member inserted into the first through hole, the mounting part has a mounting portion protruding toward the outer peripheral side, the mounting portion is provided with a second through hole, and the pump device is fixed to the mounted body via a second fastening member inserted into the second through hole.
According to the utility model discloses a pump device, the main part has the pump device fixed part that the week side is outstanding, pump device fixed part is equipped with first through-hole, the main part is fixed in the installation component via the first fastening member that inserts first through-hole, the installation component has the installation department that the week side is outstanding, the installation department is equipped with the second through-hole, pump device is fixed in the installed body via the second fastening member that inserts the second through-hole, therefore, the main part is connected fixedly with the installation component via the pump device fixed part easily, and, can utilize the installation component to consolidate the main part, and can utilize the installation component to improve pump device's installation degree of freedom.
Further, in the pump device of the present invention, it is preferable that the pump device fixing portion is provided in plurality at intervals in the circumferential direction, and the mounting portion is provided in plurality at intervals in the circumferential direction, and is circumferentially offset from the pump device fixing portion.
According to the utility model discloses a pump device, pump device fixed part is provided with a plurality ofly at the interval in week, and the installation department is provided with a plurality ofly at the interval in week, and staggers with the pump device fixed part in week, consequently, helps being fixed in the installed body with pump device steadily.
In the pump device of the present invention, it is preferable that the main body is fitted and connected to the motor housing.
According to the utility model discloses a pump device, the main part is connected with the motor housing gomphosis, consequently, helps simplifying the main part of dc-to-ac converter shell and the equipment process of motor housing, improves the packaging efficiency.
In the pump device of the present invention, it is preferable that a stepped portion having a stepped surface on one side in the axial direction is provided on the other side in the axial direction of the motor housing, and a claw portion that comes into contact with the stepped surface from one side in the axial direction of the main body portion to fix the motor housing and the main body portion together is provided on one side in the axial direction of the main body portion.
In the pump device of the present invention, it is preferable that the claw portion is provided in a plurality in the circumferential direction.
According to the pump device of the present invention, the plurality of claw portions are provided in the circumferential direction, and therefore, the main body portion of the inverter housing is facilitated to be stably fixed to the motor housing.
In the pump device of the present invention, it is preferable that the control board is fixed to the main body by welding.
In the pump device according to the present invention, it is preferable that the main body has a support portion for supporting the control board from one side in the axial direction.
(effects of utility model)
According to the present invention, the inverter case includes the main body portion that fixes the control substrate, and the pump device is fixed to the mounted body via the main body portion, and therefore, unlike the case where the pump device is fixed to the mounted body via a portion away from the control substrate, it contributes to suppressing vibration of the control substrate; further, since the inverter case includes the main body portion which is in a tubular shape extending in the axial direction and surrounding the control board from the outer peripheral side, and the cover portion which is fixed to the main body portion in a detachable state and closes the opening on the other side in the axial direction of the main body portion, even if the shape of the other side portion in the axial direction of the inverter case needs to be changed depending on the mounted body, only the cover portion of the inverter case needs to be replaced without replacing the entire inverter case, and the versatility of the inverter case constituent portion can be improved, and the change cost can be reduced.
Drawings
Fig. 1 is a perspective view schematically showing a pump device according to an embodiment of the present invention.
Fig. 2 is a side sectional view schematically showing a plane of a rotation axis of a rotor of a used motor of a pump device according to an embodiment of the present invention.
(description of symbols)
1 Pump device
10 Motor
11 rotor
111 rotating shaft
112 rotor core
12 stator
121 stator core
122 stator coil
20 pump
20a inner rotor
20b outer rotor
30 control substrate
31 electronic component
40 Motor casing
41 tube part
411 step part
42 bottom part
43 bearing part
50 inverter casing
51 main body part
511 cylindrical part
5111 substrate supporting part
512 pump device fixing part
513 claw part
52 cover part
521 cover recess
522 heat sink
523 connector part
60 mounting component
61 mounting part
62 fixed part of pump device
70 pump casing
71 cylindrical part of pump housing
72 pump casing cover
721 fluid intake port
80 oil seal
TH1 first through hole
TH2 second through hole
FX1 first fastening Member
PT projection
L axis of rotation
One side of L1 in the axial direction
The other side of L2 in axial direction
Detailed Description
Next, a pump device according to an embodiment of the present invention will be described with reference to fig. 1 and 2.
In the present invention, a direction parallel to the extending direction of the rotation axis L of the rotor 11 of the motor 10 is simply referred to as "axial direction", a radial direction with the rotation axis L as a center is simply referred to as "radial direction", and a circumferential direction with the rotation axis L as a center is simply referred to as "circumferential direction". In the radial direction, a direction approaching the rotation axis L is referred to as a radially inner side, and a direction away from the rotation axis L is referred to as a radially outer side. Also, "parallel direction" includes a substantially parallel direction. The lower side in fig. 1 (for example, corresponding to the actual lower side) corresponds to "one side in the axial direction", and the upper side in fig. 1 corresponds to "the other side in the axial direction".
(integral construction of Pump device)
The pump device 1 shown in fig. 1 is, for example, an electric pump that can be mounted on a vehicle. The pump device 1 transports a fluid inside a vehicle. The fluid conveyed by the pump device 1 is, for example, oil. The oil is, for example, ATF (Automatic Transmission Fluid).
As shown in fig. 2, the pump apparatus 1 includes: a motor 10, the motor 10 having a rotor 11 and a stator 12; a pump 20 provided on one side L1 in the axial direction of the motor 10, the pump 20 being driven by the motor 10; and a control board 30, the control board 30 being provided on the other side L2 in the axial direction of the motor 10, and being provided with an inverter circuit that controls the motor 10. Here, the control board 30 is, for example, a disk-shaped whole, is housed in the inverter case 50 so that the thickness direction coincides with the axial direction, and is provided with the electronic component 31.
Further, as shown in fig. 1 and 2, the pump apparatus 1 further includes: a motor housing 40, the motor housing 40 housing the motor 10; and an inverter case 50, the inverter case 50 housing the control board 30. Also, the inverter case 50 includes: a main body 51 fixed detachably to the other side L2 of the motor case 40 in the axial direction, the main body 51 having a cylindrical shape extending in the axial direction and surrounding the control board 30 from the outer peripheral side, the main body 51 fixing the control board 30; and a lid portion 52 that is detachably fixed to the main body portion 51 and closes the opening of the other side L2 in the axial direction of the main body portion 51.
The pump device 1 is fixed to a mounting object (not shown) such as a vehicle, for example, via the main body portion 51. As shown in fig. 1 and 2, the pump device 1 further includes a mounting member 60, the mounting member 60 having a cylindrical shape (for example, a cylindrical shape) extending in the axial direction and being fitted to the body portion 51, and the body portion 51 being fixed to a mounting object (not shown) such as a vehicle via the mounting member 60.
Further, as shown in fig. 2, the pump device 1 further includes a pump housing 70, and the pump housing 70 houses the pump 20.
(Structure of Motor)
As described above, the motor 10 has the rotor 11 and the stator 12.
As shown in fig. 2, the rotor 11 includes a rotating shaft 111, a rotor core 112 fixed to the rotating shaft 111, and a rotor magnet fixed to the rotor core 112. The rotary shaft 111 extends in the axial direction of the motor 10; the rotor core 112 is formed of, for example, a plurality of electromagnetic steel plates stacked in the axial direction of the motor 10, and has a through hole formed in the center portion thereof as viewed in the axial direction of the motor 10, through which the rotary shaft 111 penetrates in the axial direction; the rotor magnet is provided on the outer peripheral surface of the rotor core 112, for example.
As shown in fig. 2, the stator 12 is disposed radially outward of the rotor 11 and radially opposite the rotor 11. Stator 12 includes stator core 121 and stator coil 122 wound around stator core 121 with an insulator interposed therebetween. The stator core 121 is formed of, for example, a plurality of electromagnetic steel plates stacked in the axial direction of the motor 10, and has an annular core back and pole teeth extending radially inward from the core back, and the radially inner ends of the pole teeth are opposed to the rotor 11 with a slight gap in the radial direction; stator coil 122 is wound around the pole teeth of stator core 121 via an insulator, and is electrically connected to control board 30.
(Structure of pump)
As described above, the pump 20 is driven by the motor 10.
Further, as shown in fig. 2, the pump 20 is connected to the rotor 11. Here, the pump 20 has a trochoid pump structure. The pump 20 has an inner rotor 20a and an outer rotor 20b located radially outside the inner rotor 20 a. The inner rotor 20a and the outer rotor 20b are pump gears, and mesh with each other. The inner rotor 20a and the outer rotor 20b have trochoid tooth profiles, respectively. The inner rotor 20a is fixed to an end of one side L1 in the axial direction of the rotating shaft 111. Thus, the pump 20 is driven by the inner rotor 20a rotating together with the rotating shaft 111.
(Structure of Motor housing)
As described above, the motor housing 40 houses the motor 10.
As shown in fig. 2, the motor case 40 has a bottomed cylindrical shape, and includes a cylindrical portion 41 (for example, a cylindrical shape) extending in the axial direction and surrounding the motor 10 from the outer peripheral side, and a bottom portion 42 closing an opening of one side L1 in the axial direction of the cylindrical portion 41. The outer peripheral surface of the stator 12 of the motor 10 is in close contact with the inner peripheral surface of the tube 41. The bottom portion 42 is formed with a through hole through which a middle portion in the axial direction of the rotary shaft 111 penetrates in the axial direction at a central portion when viewed in the axial direction. The bottom portion 42 is provided with a cylindrical bearing portion 43 extending toward the other axial side L2 and through which the rotary shaft 111 axially penetrates, the bearing portion 43 rotatably supports the rotary shaft 111, and an oil seal 80 is attached to an opening of the other axial side L2 of the bearing portion 43.
(Structure of inverter casing)
As described above, the inverter housing 50 includes the main body portion 51 and the cover portion 52.
As shown in fig. 1 and 2, the main body 51 has a cylindrical portion 511. The cylindrical portion 511 extends in the axial direction so as to surround the control board 30 from the outer peripheral side, and is cylindrical, and one side L1 in the axial direction of the cylindrical portion 511 is surrounded from the outer peripheral side by the mounting member 60. Here, a substrate support portion 5111 that supports the control substrate 30 from the one side L1 in the axial direction is further provided on the inner peripheral surface of the cylindrical portion 511 (for example, a plurality of substrate support portions 5111 may be formed in a ring shape while being provided at intervals in the circumferential direction). The board support portion 5111 is further provided with a projection PT projecting toward the other side L2 in the axial direction and penetrating the control board 30. The control board 30 is fixed to the main body portion 51 (e.g., the board support portion 5111) by welding.
Further, the protruding portion PT may also serve as a positioning portion when the control board 30 is fixed to the main body portion 51. The control board 30 is not limited to being fixed by welding, and may be fixed by using a fixing member such as a screw. For example, the control board 30 may be positioned by the projection PT and fixed by a fixing member such as a screw. By using the protruding portion PT as the positioning portion of the control board 30, the control board 30 can be stably fixed to the main body portion 51.
The projection PT may also be used as a welding portion when the control board 30 is welded to the main body 51. For example, the control board 30 can be fixed to the main body portion 51 while reducing the number of parts by melting and welding the portion of the projecting portion PT projecting from the other side L2 in the axial direction of the surface of the control board 30 with heat.
As shown in fig. 2, the body portion 51 has a pump unit fixing portion 512 protruding toward the outer peripheral side, and the mounting member 60 has a pump unit fixed portion 62 protruding toward the outer peripheral side and overlapping the pump unit fixing portion 512 as viewed in the axial direction. Here, the pump unit fixing portion 512 protrudes from the cylindrical portion 511 toward the outer circumferential side, and the pump unit fixing portion 512 is in contact with the pump unit fixed portion 62 of the mounting member 60 in the axial direction. The pump unit fixing portion 512 is provided with a first through hole TH1, and the pump unit 1 is fixed to an object to be mounted, such as a vehicle, via a first fastening member FX1 (in the illustrated example, a screw is used, but not limited thereto) inserted into the first through hole TH 1. Specifically, as shown in fig. 1 and 2, the main body portion 51 is fixed to the mounting member 60 via the first fastening member FX1 that is inserted into the first through hole TH1 and screwed into the pump apparatus fixed portion 62. The mounting member 60 further includes a mounting portion 61 protruding toward the outer peripheral side, the mounting portion 61 is provided with a second through hole TH2, and the pump device 1 is fixed to a mounting object such as a vehicle via a second fastening member (not shown, for example, a screw) inserted into the second through hole TH 2.
As shown in fig. 2, the pump unit fixing portion 512 is provided in plurality at intervals in the circumferential direction (in the illustrated example, two are provided at equal intervals in the circumferential direction, but not limited thereto), and the attachment portion 61 is provided in plurality at intervals in the circumferential direction (in the illustrated example, three are provided at substantially equal intervals in the circumferential direction, but not limited thereto), and is offset from the pump unit fixing portion 512 in the circumferential direction.
As shown in fig. 2, the main body 51 is fitted and connected to the motor housing 40. Here, a stepped portion 411 is provided on the other side L2 in the axial direction of the motor housing 40, one side L1 in the axial direction of the stepped portion 411 has a stepped surface, a claw portion 513 is provided on one side L1 in the axial direction of the main body portion 51 (in the illustrated example, the cylindrical portion 511), and the claw portion 513 is in contact with the stepped surface from the one side L1 in the axial direction to fix the motor housing 40 and the main body portion 51 together. The plurality of claw portions 513 are provided at equal intervals in the circumferential direction, for example.
As shown in fig. 2, the outer peripheral edge of the lid portion 52 contacts the end of the other side L2 in the axial direction of the cylindrical portion 511. A lid recess 521 that is recessed toward the other axial side is provided on one axial side L1 of the lid 52, and the electronic component 31 provided on the control board 30 is housed in the lid recess 521 (the lid recess 521 may house at least a part of the electronic component 31). As shown in fig. 1, a plurality of heat radiating fins 522 are provided on the other side L2 in the axial direction of the cover 52, and a connector portion 523 is provided for connection to the outside to supply power to the control board 30.
(Pump housing 70)
As described above, the pump housing 70 houses the pump 20.
As shown in fig. 1 and 2, the pump housing 70 includes a pump housing cylindrical portion 71 and a pump housing lid portion 72, the pump housing cylindrical portion 71 is integrally formed on one side in the axial direction of the motor housing 40, the pump housing lid portion 72 is attached to the pump housing cylindrical portion 71 from one side L1 in the axial direction, and a working space in which the inner rotor 20a and the outer rotor 20b of the pump 20 are housed is surrounded by the pump housing cylindrical portion 71 and the pump housing lid portion 72. The pump housing cylindrical portion 71 has a fluid discharge port (not shown), and the pump housing cover portion 72 has a fluid suction port 721.
When the pump device 1 is operated, the rotor 11 rotates to rotate the inner rotor 20a and the outer rotor 20b of the pump 20, and the fluid flows into the working space from the fluid suction port 721 of the pump housing 70, is pressurized, and is discharged from the fluid discharge port of the pump housing 70.
(main effect of the present embodiment)
According to the pump device 1 of the present embodiment, the inverter case 50 includes the main body portion 51, the control substrate 30 is fixed to the main body portion 51, and the pump device 1 is fixed to the mounted body such as a vehicle via the main body portion 51, and therefore, unlike the case where the pump device 1 is fixed to the mounted body such as a vehicle via a portion away from the control substrate, it contributes to suppressing vibration of the control substrate 30; further, since the inverter case 50 includes the main body portion 51 and the lid portion 52, the main body portion 51 is formed in a tubular shape extending in the axial direction so as to surround the control board 30 from the outer peripheral side, and the lid portion 52 is detachably fixed to the main body portion 51 so as to close the opening of the other side L2 in the axial direction of the main body portion 51, even if the shape of the other side L2 portion in the axial direction of the inverter case 50 needs to be changed depending on the mounted body such as a vehicle, it is only necessary to replace the lid portion 52 of the inverter case 50 without replacing the entire inverter case 50, and the versatility of the inverter case constituent portions can be improved and the change cost can be reduced.
The present invention has been described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.
For example, in the above-described embodiment, the pump device 1 has the mounting member 60, and the pump device 1 is fixed to a mounted body such as a vehicle via the mounting member 60, but the present invention is not limited to this, and the mounting member 60 may be omitted as needed.
In the above embodiment, the main body 51 is fitted and connected to the motor housing 40, but the present invention is not limited to this. For example, the main body portion 51 may be fixed to the motor housing 40 by welding, integral molding, fastening, or the like.
In the above embodiment, the control board 30 is fixed to the main body 51 by welding, but the present invention is not limited to this, and the control board 30 may be fixed to the main body 51 by screws or the like.
Further, in the above embodiment, the pump housing cylindrical portion 71 of the pump housing 70 is integrally formed on one side in the axial direction of the motor housing 40, but is not limited to this, and the pump housing cylindrical portion 71 of the pump housing 70 may be formed separately from the motor housing 40.
It should be understood that the present invention can freely combine the respective components in the embodiments or appropriately change or omit the respective components in the embodiments within the scope thereof.
Claims (10)
1. A pump apparatus, comprising: a motor having a rotor and a stator; a pump provided on one side of the motor in an axial direction and driven by the motor; and a control substrate provided on the other side of the motor in the axial direction and provided with an inverter circuit for controlling the motor, characterized by further comprising:
a motor housing that houses the motor; and
an inverter case that houses the control board,
the inverter case includes:
a main body portion that is detachably fixed to the other side of the motor case in the axial direction, has a cylindrical shape extending in the axial direction and surrounding the control board from the outer peripheral side, and fixes the control board; and
a cover portion that is detachably fixed to the main body portion and blocks an opening on the other side of the main body portion in the axial direction,
the pump device is fixed to a body to be attached via the main body portion.
2. The pump apparatus of claim 1,
the main body portion has a pump unit fixing portion protruding toward the outer peripheral side,
the fixed part of the pump device is provided with a first through hole,
the pump device is fixed to an attached body via a first fastening member inserted into the first through hole.
3. The pump apparatus of claim 1,
and also has a mounting component which is used for mounting the mounting component,
the mounting component is in a cylindrical shape extending along the axial direction and is sleeved on the main body part,
the main body portion is fixed to an attached body via the attachment member.
4. Pump apparatus according to claim 3,
the main body portion has a pump unit fixing portion protruding toward the outer peripheral side,
the fixed part of the pump device is provided with a first through hole,
the main body portion is fixed to the mounting component via a first fastening member inserted into the first through hole,
the mounting member has a mounting portion protruding toward the outer peripheral side,
the mounting part is provided with a second through hole,
the pump device is fixed to the mounted body via a second fastening member inserted into the second through hole.
5. The pump apparatus of claim 4,
the pump device fixing part is provided with a plurality of pump device fixing parts at intervals in the circumferential direction,
the mounting portion is provided with a plurality of circumferentially spaced intervals, and is circumferentially staggered from the pump unit fixing portion.
6. The pump apparatus of claim 1,
the main body portion is fitted and connected to the motor housing.
7. The pump apparatus of claim 6,
a stepped portion is provided at the other side of the motor housing in the axial direction,
the step portion has a step surface on one side in the axial direction,
a claw portion is provided on one side in the axial direction of the main body portion,
the claw portion is in contact with the step surface from one side in the axial direction to fix the motor housing and the main body portion together.
8. The pump apparatus of claim 7,
the claw portion is provided in plurality in the circumferential direction.
9. The pump apparatus of claim 1,
the control board is fixed to the main body by welding.
10. The pump apparatus of claim 1,
the main body portion has a support portion that supports the control board from one side in the axial direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220344134.5U CN217270802U (en) | 2022-02-21 | 2022-02-21 | Pump device |
| JP2023007634A JP2023121730A (en) | 2022-02-21 | 2023-01-20 | Pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220344134.5U CN217270802U (en) | 2022-02-21 | 2022-02-21 | Pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270802U true CN217270802U (en) | 2022-08-23 |
Family
ID=82857150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220344134.5U Active CN217270802U (en) | 2022-02-21 | 2022-02-21 | Pump device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2023121730A (en) |
| CN (1) | CN217270802U (en) |
-
2022
- 2022-02-21 CN CN202220344134.5U patent/CN217270802U/en active Active
-
2023
- 2023-01-20 JP JP2023007634A patent/JP2023121730A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023121730A (en) | 2023-08-31 |
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