CN203619963U - Piston type negative pressure device for breast pumps - Google Patents
Piston type negative pressure device for breast pumps Download PDFInfo
- Publication number
- CN203619963U CN203619963U CN201320720064.XU CN201320720064U CN203619963U CN 203619963 U CN203619963 U CN 203619963U CN 201320720064 U CN201320720064 U CN 201320720064U CN 203619963 U CN203619963 U CN 203619963U
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- piston
- screw rod
- negative pressure
- pressure device
- type negative
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- Expired - Lifetime
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a piston type negative pressure device for breast pumps, and belongs to the field of maternal and infant electric appliances. The piston type negative pressure device is characterized in that screw braces are fastened together with a piston head by screws through a convex disc on the outer circumference, penetrate through a leather cup and a piston, and are buckled onto the piston through the buckle position. The screw is formed by cutting a cylindrical screw body vertically into two parallel cutting planes in axial symmetry on the cylindrical screw rod, and the forms of threads adopt double-sided broken threads. Compared with the prior art, the device has the advantages of simplified processing technology, high production efficiency, higher reliability, and the like.
Description
Technical field
This utility model belongs to mother and baby's appliance field, especially belongs to a kind of piston type negative pressure device for breast pump.
Background technology
General piston type negative pressure generating device, is to utilize between piston head and leather cup to cooperatively interact, and realizes the function of the air-breathing and outgas of batch (-type) in cylinder, controls the size of cylinder internal gas pressure, thereby obtain adjustable negative pressure by the displacement of control piston.Traditional piston type negative pressure device, also must be provided with the gentle valve control device of special air valve, to realize the functions such as negative pressure adjusting.But such device complex structure, cost cost is higher.
Chinese patent discloses a kind of negative pressure device of piston type intermittent action.The structural principle of this device is: on piston and piston head central axis, form axis hole and required female thread, under the driving of drive mechanism, drive piston and piston head to move back and forth in cylinder by screw rod, the leather cup that is fixed on piston and piston head joint seals the air flue of piston head or opens, thereby a kind of negative pressure device of piston type intermittent action simple in structure is provided.The shortcoming of its existence mainly contains 2 points: 1. because the cross-sectional area of screw rod is circle, the surface of screw rod is screw thread, i.e. so-called " full tooth ", mould need to do line position on four sides, product spue line easily causes dislocation, screw rod after injection moulding need to, through this operation of polishing, cause processing technique complexity, production efficiency low; 2. the drive connection of screw rod and piston is to carry out transmission by screw flight, piston head and piston are attached relations, need to carry out close-fitting by button bit, but because piston is nylon material, there is water absorption, so injection moulding each piston size is out variant, in assembling, easily make piston head and piston button bit loosening, cause piston head easily to come off, reliability is poor.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency and proposes a kind of piston type negative pressure device for breast pump.Compared with prior art, this device processing technique is simplified, production efficiency is high, and reliability is higher.
The technical solution of the utility model is: a kind of piston type negative pressure device for breast pump, comprise screw rod, and motor moves by drive mechanism drive screw, and screw rod drives piston and piston head to move reciprocatingly in pump seat and cylinder by screw rod facing; The leather cup that is fixed on piston and piston head joint seals the air flue of piston head or opens; Distinguished: screw rod facing tightens together with piston head with screw by the protruding dish on excircle, screw rod facing passes leather cup and piston, and by button bit, screw rod facing is buckled on piston.
Described screw rod is on cylindrical screw rod body, is cut into up and down axisymmetrically two parallel cut surfaces, and tooth form is two sides snaggletooth.Screw flight and screw rod facing are for being slidably matched.
Pump seat docks with cylinder, and leather cup is fixed on the joint of pump seat and cylinder by turning edge on it.
This piston type negative pressure device part same as the prior art is: motor moves by drive mechanism drive screw, and screw rod drives piston and piston head to move reciprocatingly in pump seat and cylinder by screw rod facing.Difference is: the tooth form of (1) screw rod adopts the flat screw rod of two sides snaggletooth.(2) screw rod facing tightens together with piston head by screw, and screw rod facing passes leather cup and piston, and by fastening structure, screw rod facing is buckled on piston, and the thread that revolves of screw rod is connected with screw rod facing.Its advantage is:
1, new screw rod tooth form adopts the flat screw rod of two sides snaggletooth, on mould structure, change simple front and back mode structure into by four row pieces, spue line industry can be on thread, solve the problem of spue line puzzlement for a long time, after improvement, again need not consider the techniques such as the polishing with loft, greatly enhance productivity.
2, in the prior art, screw rod is drive connection with piston, and piston head is attached relation with piston, so work process chock plug easily comes off, new construction of the present utility model has changed drive connection, and flat screw rod and piston head are integral drive relations, and piston head can not come off in the course of the work like this.Its structural principle is: screw rod facing and piston head are that in aggregates, recycling button bit is buckled in screw rod facing on piston with together with screwed lock, and flat screw rod is by the direct driven plunger head work of spiral tooth, stable performance.
3, this utility model has solved old Standard problem, and screw rod need not be polished, and piston need not be to boil water, has improved the efficiency of assembling of a whole set of type, and has solved the problem that piston head comes off, and performance is more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the piston type negative pressure device of prior art.
Fig. 2 is the decomposing schematic representation of this utility model for the piston type negative pressure device of breast pump.
Fig. 3 is the schematic diagram of critical component screw rod of the present utility model.
Accompanying drawing mark: 1-cylinder; 2-leather cup; 3-motor; 4-pump seat; 5-screw rod; 6-piston; 7-screw rod facing; 8-piston head; The protruding dish of 9-; 10-screw; 11-button bit.
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is described in detail: a kind of piston type negative pressure device for breast pump of the present utility model, comprise screw rod 5, motor 3 moves by drive mechanism drive screw 5, and screw rod 5 drives piston 6 and piston head 8 to move reciprocatingly in pump seat and cylinder 1 by screw rod facing 7; The leather cup 2 that is fixed on piston 6 and piston head 8 joints seals the air flue of piston head 8 or opens; It is characterized in that: screw rod facing 7 tightens together with piston head 8 by the protruding dish 9 use screws 10 on excircle, screw rod facing 7 passes leather cup 2 and piston 6, and by button bit 11, screw rod facing 7 is buckled on piston 6.
Described screw rod 5 is on cylindrical screw rod body, is cut into up and down axisymmetrically two parallel cut surfaces, and tooth form is two sides snaggletooth.The screw thread of screw rod 5 and screw rod facing 7 are for being slidably matched.
Pump seat docks with cylinder 1, and leather cup 2 is fixed on the joint of pump seat and cylinder 1 by turning edge on it.
With reference to Fig. 1, motor 3 moves by drive mechanism drive screw 5, and screw rod 5 drives piston 6 and piston head 8 to move reciprocatingly in pump seat 4 and cylinder 1 by screw rod facing 7.The tooth form of screw rod 5 adopts the flat screw rod of two sides snaggletooth, adopts simple front and back mode structure on mould structure, and spue line can be on thread, has solved the problem being perplexed by spue line.Screw rod facing 7 tightens together with piston head 8 by screw, and screw rod facing 7 passes leather cup 2 and piston 6, and by fastening structure, screw rod facing 7 is buckled on piston 6, and the thread that revolves of screw rod 5 is connected with screw rod facing 7.Like this, screw rod 5 can be by the direct driven plunger of spiral facing 78, and piston head 8 is difficult for disengaging, stable performance in the process of moving reciprocatingly.Leather cup 2 is the structures that turn edge on dark tubbiness band, and leather cup 2 is embedded in the joint of pump seat 4 and cylinder 1 by turning edge on it.
Claims (4)
1. the piston type negative pressure device for breast pump, comprise screw rod (5), motor (3) is by drive mechanism drive screw (5) motion, and screw rod (5) drives piston (6) and piston head (8) to move reciprocatingly in pump seat and cylinder (1) by screw rod facing (7); The leather cup (2) that is fixed on piston (6) and piston head (8) joint seals the air flue of piston head (8) or opens; It is characterized in that: screw rod facing (7) tightens together with piston head (8) by protruding dish (9) screw (10) on excircle, screw rod facing (7) passes leather cup (2) and piston (6), and by button bit (11), screw rod facing (7) is buckled on piston (6).
2. according to a kind of piston type negative pressure device for breast pump of claim 1, it is characterized in that, described screw rod (5) is on cylindrical screw rod body, is cut into up and down axisymmetrically two parallel cut surfaces, and tooth form is two sides snaggletooth.
3. according to a kind of piston type negative pressure device for breast pump of claim 2, it is characterized in that, the screw thread of screw rod (5) and screw rod facing (7) are for being slidably matched.
4. according to any piston type negative pressure device for breast pump of claims 1 to 3, it is characterized in that, pump seat docks with cylinder (1), and leather cup (2) is fixed on the joint of pump seat and cylinder (1) by turning edge on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720064.XU CN203619963U (en) | 2013-11-15 | 2013-11-15 | Piston type negative pressure device for breast pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720064.XU CN203619963U (en) | 2013-11-15 | 2013-11-15 | Piston type negative pressure device for breast pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203619963U true CN203619963U (en) | 2014-06-04 |
Family
ID=50806498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320720064.XU Expired - Lifetime CN203619963U (en) | 2013-11-15 | 2013-11-15 | Piston type negative pressure device for breast pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203619963U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754119A (en) * | 2022-03-23 | 2022-07-15 | 广州布布健康科技有限公司 | Breast pump and transmission mechanism and transmission method thereof |
| CN120053791A (en) * | 2025-03-07 | 2025-05-30 | 深圳市森姆泵业科技有限公司 | Electric breast pump and control method thereof |
| CN120132099A (en) * | 2025-03-13 | 2025-06-13 | 深圳市森姆泵业科技有限公司 | A driving device and a method for operating the driving device |
-
2013
- 2013-11-15 CN CN201320720064.XU patent/CN203619963U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754119A (en) * | 2022-03-23 | 2022-07-15 | 广州布布健康科技有限公司 | Breast pump and transmission mechanism and transmission method thereof |
| CN120053791A (en) * | 2025-03-07 | 2025-05-30 | 深圳市森姆泵业科技有限公司 | Electric breast pump and control method thereof |
| CN120132099A (en) * | 2025-03-13 | 2025-06-13 | 深圳市森姆泵业科技有限公司 | A driving device and a method for operating the driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160317 Address after: 515100, No. 8, Ping Bei Industrial Zone, Chaoyang District, Guangdong, Shantou Patentee after: SHANTOU XINGHE ELECTRICAL APPLIANCE Co.,Ltd. Address before: 515100 Shantou Xinghe Electrical Appliance Co., Ltd., No. 8, Ping Bei Industrial Zone, Chaoyang District, Guangdong, Shantou Patentee before: Chen Junbo |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 515100, No. 8, Ping Bei Industrial Zone, Chaoyang District, Guangdong, Shantou Patentee after: GUANGDONG HORIGEN MOTHER & BABY PRODUCTS Co.,Ltd. Address before: 515100, No. 8, Ping Bei Industrial Zone, Chaoyang District, Guangdong, Shantou Patentee before: SHANTOU XINGHE ELECTRICAL APPLIANCE Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |