CN205235074U - Transfer pump and pump piece subassembly thereof - Google Patents
Transfer pump and pump piece subassembly thereof Download PDFInfo
- Publication number
- CN205235074U CN205235074U CN201521046583.8U CN201521046583U CN205235074U CN 205235074 U CN205235074 U CN 205235074U CN 201521046583 U CN201521046583 U CN 201521046583U CN 205235074 U CN205235074 U CN 205235074U
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- pump
- sheet
- chip module
- sealing surface
- protective sheet
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Abstract
The utility model provides a transfer pump and pump piece subassembly thereof. The pump piece and the drive cam contact complex position department of this pump piece subassembly are provided with wear -resisting surface. Wear resistance when the material characteristic on this wear -resisting surface can improve the pump piece and receives the cam actuator disk. This wear -resisting surface can be provided by the guard plate that pump piece pore wall includes, guard plate installs conveniently, has both guaranteed assembly facility degree, also is favorable to controlling simultaneously manufacturing cost. This wear -resisting surface also can be provided by the coating that pump piece pore wall surface set up. Use the transfer pump of this pump piece subassembly, its life and precision can not receive that the cam is fricative to be influenced.
Description
Technical field
The utility model relates to infusion pump field, and relates in particular to a kind of infusion pump pump chip module and use itInfusion pump.
Background technology
The liquid pumping mechanism of existing infusion pump, is the stretching motion that utilizes pump sheet, produces and acts on woven hoseExtruding force carry liquid. The stretching motion of pump sheet is conventionally by cam-actuated, radial ruler when cam rotationVery little variation, drives pump sheet flexible. Under this structural design, contacted many can the producing of the pump sheet of plastic material and camRaw wearing and tearing, the service life of the whole infusion pump of image. Therefore, be necessary to provide a solution, canUnder the prerequisite of not image cost and assembly technology, solve this wear problem.
Utility model content
For pump sheet and the cam wear problem causing that interacts, a kind of infusion pump pump chip module is provided, shouldPump chip module can, in the situation that not increasing cost and assembly difficulty, improve anti-wear performance.
According to first aspect, the utility model provides a kind of infusion pump pump chip module, comprises pump sheet, described pumpSheet comprises working end and installation end, and described installation end is provided with for the drive unit of described pump chip module and holds itIn installing hole, described installing hole has the hole wall forming near described working end; Described hole wall with described in driveThe position that moving device contact coordinates has wearing face.
According to second aspect, the utility model provides a kind of infusion pump, and this infusion pump comprises pump case, is supported inWoven hose on pump case, and be arranged in pump case and act on the vermiculator of described woven hose. Described wrigglingMoving device comprises motor, Coupling Shaft and drive unit, and the output shaft of described motor is connected to described Coupling Shaft,Described drive unit is sleeved in described Coupling Shaft. Wherein, described vermiculator also comprises said pump chip module,Described Coupling Shaft is through the installing hole of described pump sheet, and described drive unit is positioned at described installing hole and is positionedBetween described installing hole and Coupling Shaft, described working end is under the drive of described drive unit, described in acting onWoven hose.
While using said pump chip module, because the hole wall of pump chip module has wearing face, repeatedly make like thisWith after infusion pump, can substantially solve the problem of pump sheet matching part driven device wearing and tearing.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below by rightIn embodiment or description of the Prior Art, the accompanying drawing of required use is briefly described, apparently, belowAccompanying drawing in description is only embodiment more of the present utility model, for those of ordinary skill in the art,Do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing. In accompanying drawing:
Fig. 1 is a kind of schematic diagram of infusion pump;
Fig. 2 is the schematic diagram of part vermiculator;
Fig. 3 is the schematic diagram that the pump chip module of drive unit is installed;
Fig. 4 a is according to the structural representation of the pump chip module of the first embodiment, and wherein Fig. 4 b is this embodimentThe schematic diagram of protective sheet, Fig. 4 c is the schematic diagram of the pump sheet of this embodiment;
Fig. 5 is according to the structural representation of the pump sheet of the second embodiment; And
Fig. 6 is according to the schematic diagram of the pump chip module of the 3rd embodiment.
Detailed description of the invention
Below with reference to drawings and Examples, the utility model is described in further details.
The utility model provides a kind of infusion pump pump chip module, uses the use of the infusion pump of this pump chip moduleIn the life-span, can not be subject to the impact of pump pad wear. Consider the mechanism of action that pump sheet and drive unit cooperatively interact,Drive unit rotates to push contact pump sheet, and therefore the wearing and tearing of pump sheet self can be greater than the wearing and tearing of drive unit,Therefore the position that the utility model pump chip module matches with drive unit is set to wearing face, improves wholeThe use persistence of individual pump chip module. The wearing face here can adopt metal to make, and forms metal surface;Maybe can adopt other non-metallic materials with wearability to make, for example pottery, polyurethane, cast stone etc. SeparatelyOutward, " metal " described here is not limited to simple metal, and it also comprises alloy (for example steel), burningThing, slaine etc. have the material of wearability. What in following examples 1-3, form in connection with metal material is wear-resistingSurface, elaborates to pump chip module.
Fig. 1 shows a kind of infusion pump 100. This infusion pump comprises pump case 10, is supported in defeated on pump case 10Liquid pipe 20, and be arranged in pump case 10 and act on the vermiculator of woven hose 20. Vermiculator can squeezePressure infuser pipe 20, carries the liquid in woven hose 20 based on pumping mechanism. Fig. 2 shows part vermiculator,Vermiculator comprises motor (not shown), Coupling Shaft 1, drive unit 2 and pump chip module 3; Motor defeatedShaft is connected to Coupling Shaft 1, and drive unit 2 is sleeved in Coupling Shaft 1. Pump chip module 3 comprises an installing hole,Coupling Shaft 1 is through this installing hole, and drive unit 2 is arranged in installing hole, and is positioned installing hole and switchingBetween axle 1. Drive unit 2 is cam, and this motor drives Coupling Shaft 1 to rotate by output shaft, Coupling Shaft 1And then drive the cam of socket on it to rotate, make the pump chip module that contacts with the cam radial direction at camUpper stretching motion, produces squeezing action to woven hose 20, reaches the effect of carrying woven hose 20 inner liquid medicines.Coupling Shaft 1 can be square shaft or columnar shaft, and cam correspondence has square shaft hole or circular shaft hole.
Fig. 3 especially shows the pump chip module 3 that drive unit 2 is installed that the utility model provides. This pump sheetAssembly comprises pump sheet 31, and pump sheet 31 comprises working end 311 and installation end 312, and working end 311 acts on defeatedLiquid pipe 20, installation end 312 is assembled together with drive unit 2. Installation end 312 is provided with installing hole 313,2 of drive units are arranged in this installing hole 313. Installing hole 313 has that close working end 311 formsHole wall 314, hole wall 314 can contact cooperation with drive unit 2. In the utility model, hole wall 314 and drivingDevice 2 positions of matching can have wearing face; Be resistance to by contact the partial design coordinating with drive unitMill surface (also can be described as wear-resisting contact-making surface), can be in the use procedure of infusion pump, opposing drive unit 2The fretting wear that rotation brings, avoids affecting transfusion pump performance and useful life because of wearing and tearing. Certainly at certainIn a little embodiments, also whole hole wall all has wear-resisting contact-making surface.
Fig. 4 a-6 shows respectively that in the utility model, to have at least partly wear-resisting contact-making surface (special in embodimentFor Metal Contact face) the schematic diagram of pump chip module. For example, the sheet metal of elastomeric material can be fastened to pump sheetUpper, the surface of sheet metal forms this wear-resisting contact-making surface. For example, hole wall is provided with the metal coating that spraying forms,Metal coating is as this wear-resisting contact-making surface. For example, be formed with groove on hole wall, setting-in is to the metal in grooveSheet provides antiwear wear-resisting contact-making surface, etc.
In the first embodiment (Fig. 4 a-4c), pump chip module 3 comprises pump sheet 31, the hole wall 314 of pump sheet 31Further comprise wall body 33 and protective sheet 32, protective sheet 32 covers wall body 33. In this embodiment, hole wall314 wearing faces that have are arranged in the included protective sheet of hole wall 314 32, are especially arranged on protectionSheet 32 is dorsad on the surface of wall body 33. Wall body 33 is covered by protective sheet 32, does not arrange wear-resisting on wall body 32Surface.
As shown in Figure 4 b, protective sheet 32 is for clamping the elastic construction on pump sheet 31 surfaces, and pump sheet 31Be formed with protective sheet 32 syndeton cooperatively interacting with anticreep. Protective sheet 32 is U-shaped structure, its bagDraw together the first side 321, the second side 322 and be connected to the first side 321 and the second side 322 between envelopeClose face 323. The first side 321 and the second side 322 clamp pump sheet 31, and 323 of sealing surfaces coverWall body 33. In this embodiment, this sealing surface 323 dorsad outer surface of wall body 33 contacts and joins with drive unit 2Close, the outer surface of this sealing surface 323 has wearing face, thereby when contact cooperation with drive unit 2,Prevent that whole pump chip module 3, especially hole wall 314 are worn.
Protective sheet 32 also comprise be formed between the first side 321 and the second side 322 and with sealing surface 323Relative openend 324. The width of openend 324 is less than the width 323 of sealing surface, the first side under this configurationFace 321 and the second side 322 are the structure of centering clamping, and the elastic force of centering clamping is provided, and make theOne side 312 and the second side 322 are on being clamped in pump sheet 31. Here " width " refers to from the first sideDistance between 321 to second sides 322.
On the first side 321 of protective sheet 32 and/or the second side 322, also can be provided with back-off 325, pump sheet 31Correspondence is provided with mounting groove 315. Back-off 325 is embedded in mounting groove 315. This back-off 325 is hangnail knotStructure, can prevent protective sheet 32 accidental release. Be in the example of sheet metal or other flexure strips in protective sheet, fallButton can be directly by punch forming in protective sheet 32, and there is favorable elasticity. In illustrated embodiment,On the first side 321 and the second side 322, be provided with back-off 325,315 of mounting grooves are through hole, twoOn side, back-off 325 corresponding to position snaps onto in same through hole.
Pump chip module 3 assembling processes of this first embodiment are as follows: protective sheet 32 can penetrate the peace of pump sheet 31In dress hole 313, the U-shaped openend 324 of protective sheet 32 snaps in towards the working end 311 of pump sheet 31. ByIn the clamping characteristic certainly of protective sheet 32, while snapping in, can clamp pump sheet 31; Further sliding towards working end 311Moving protective sheet 32, the back-off 325 of protective sheet 32 slides in the mounting groove 315 on pump sheet 31, now anti-The back-off 325 of bluff piece 32 is embedded in mounting groove 315; Now complete assembling process. Due to back-off and protectionSheet is one-body molded, and is hangnail structure, and this protective sheet 32 can be from clamping pump sheet 31, therefore without external forceUnder effect, protective sheet 32 can accidental release not drop from pump sheet 31, and sealing surface 323 can cover wellWall body 33. After having assembled, sealing surface 323 is fitted on wall body 33, the wearing face setting of hole wall 314On the outer surface of sealing surface 323.
In the first embodiment, protective sheet 32 can entirety be made up of metal material, or the only sealing of protective sheet 32Face 323 is made up of metal material, or the sealing surface 323 of protective sheet 32 dorsad on the outer surface of wall body 33 onlyBe provided with metal coating etc. The protective sheet 32 of this embodiment not only can prevent pump pad wear, and its assemblingEasy to operate, cost is low.
In the second embodiment of pump chip module 3 (Fig. 5), the hole wall 314 of pump sheet 31 comprises wall body equally33 and protective sheet 32, and the wearing face that hole wall 314 has is arranged on its included protective sheet 32 equallyUpper, be especially arranged on protective sheet 32 dorsad on the surface of wall body 33. Wall body 33 is covered by protective sheet 32,On wall body 32, wearing face is not set. Protective sheet 32 is the elastic construction that can clamp pump sheet 31 surfaces, andPump sheet 31 and protective sheet 32 are formed with the syndeton cooperatively interacting with anticreep. The structure of protective sheet 32 and frontState embodiment identical; Be the anticreep syndeton difference of the second embodiment with the difference of the first embodiment.The first side 321 and/or second side 322 of protective sheet 32 are provided with back-off 325,31 correspondences of pump sheetBe provided with positioning step 316; The back-off 325 and the positioning step 316 that cooperatively interact form anticreep syndeton.After having assembled, back-off 325 is supported on the sidewall of positioning step 316, thereby locates with respect to pump sheet 31Protective sheet 32. This back-off 325 is hangnail structure, can prevent protective sheet 32 accidental release. Protective sheet 32Identical with the first embodiment from clamping structure, be no longer repeated in this description at this.
In above-mentioned two embodiment, back-off also can be the bulge-structure forming on two sides, and projection is embedded intoIn mounting groove 315 or support on positioning step 316, can realize equally anticreep and connect. In addition, above-mentioned twoThe protective sheet of individual embodiment, by being connected on pump sheet without bonding mode without screw, having reduced and has manufactured and assemble againAssorted degree.
In the 3rd embodiment (Fig. 6), the wearing face of pump chip module 3 is metal coating. Metal coating canForm by modes such as spraying, sputter, depositions. This metal coating is formed at hole wall 314 wall bodies 33 at leastPart surface, reduces the degree of wear while cooperation with drive unit 2, and this metal coating also can be formed at hole wallThe outer surface of 314 protective sheet 32, for example outer surface of protective sheet 32 sealing surfaces 323. In this embodiment, holeThe wearing face that wall 314 has is directly formed at its surface.
In other embodiments of pump chip module (not shown), the hole wall of pump sheet comprises wall body and protection equallySheet, wall body is covered by protective sheet, and wearing face is not set on wall body, and the wearing face of hole wall is arranged on protectionOn the outer surface of sheet, hole wall provides this wearing face by its included protective sheet. Protective sheet can be connected toOn pump sheet, and pump sheet and protective sheet are formed with the syndeton cooperatively interacting with anticreep. Particularly, this protectionSheet comprises sealing surface and is arranged at the connecting portion on sealing surface. On the wall body of hole wall, correspondence is provided with groove, connectsThe portion of connecing can snap onto in groove, realizes being fixedly connected with between protective sheet and pump sheet. After connecting portion snaps in, envelopeThe face of closing can fit to wall body surface and cover the opening of groove, for pump chip module provides wearing face.
The specific constructive form of connecting portion and groove can adopt following design. For example, connecting portion is by deformableThe elastic construction that material is made, the undersized of groove is in the size of connecting portion; When assembling, utilize connecting portionDeformability snapped onto in groove, connecting portion therefore with groove form interference fit, realize fastening companyConnect. For example, connecting portion can comprise first brace and second brace of end with bending structure, grooveBe the groove of open side with inner edge; When assembling, two braces are inserted in groove respectively, and endThe bending structure of end is resisted against respectively on the inner edge of groove, and realization is fastenedly connected. For example, groove and connectionPortion is formed with respectively the positioning convex cooperatively interacting; When assembling, the positioning convex of connecting portion under external forceStride across the positioning convex on groove, both are fastened together. Above-mentioned embodiment is intended to explanation, toolThe groove of body and the fit structure of connecting portion, do not form restriction to protection domain of the present utility model; As long asBe that the part that pump chip module coordinates with drive unit is wearing face, include in scope of the present utility model.
In another embodiment, the protective sheet that pump chip module comprises by hole wall equally provides wearing face,Be that wearing face is arranged in the protective sheet of hole wall. Protective sheet, should be from clamping action from being clamped in pump sheet surfaceCan prevent that the protective sheet under fortuitous event from getting loose, and this protective sheet can no longer be provided with connection disconnecting prevention structure. Anti-Bluff piece can be U-shaped clamping structure, and this U-shaped structure comprises two sides, and be formed between two sides andThe sealing surface being oppositely arranged and openend. In the first and second embodiment, the width of openend is less than sealingThe width of face, makes two sides have centering chucking power, and can certainly be clamped in pump sheet surface. Alternately,The A/F of this openend can be slightly less than the thickness of pump sheet. Protective sheet utilizes himself deformation grip to pumpBehind sheet surface, because pump sheet thickness is greater than A/F, protective sheet has the restoring force that recovers its original shape,Also can certainly be clamped in pump sheet surface.
The infusion pump pump chip module that the utility model provides, its position coordinating with drive unit is wearing face,Can reduce the wearing and tearing that produced by drive unit contact friction. In addition, no matter be the side that adopts protective sheet designCase still adopts the scheme of coating, and this pump chip module all has advantages of that assembling/manufacture is convenient and cost is low.
Above content is in conjunction with concrete embodiment further detailed description of the utility model, noCan assert that concrete enforcement of the present utility model is confined to these explanations. For technology neck under the utility modelThe those of ordinary skill in territory, without departing from the concept of the premise utility, can also make someSimple deduction or replace.
Claims (10)
1. an infusion pump pump chip module, comprises pump sheet, and described pump sheet comprises working end and installation end, described inInstallation end is provided with for the drive unit of described pump chip module and holds installing hole wherein, and described installing hole hasThe hole wall forming near described working end; It is characterized in that, described hole wall contacts cooperation with described drive unitPosition there is wearing face.
2. infusion pump pump chip module according to claim 1, is characterized in that, described hole wall comprises wallBody and at least partly protective sheet of the described wall body of covering, described wearing face is arranged on described protective sheet institute dorsadState on the surface of wall body.
3. infusion pump pump chip module according to claim 2, is characterized in that, described protective sheet comprisesThe first side, the second side and be connected to the first side and the second side between sealing surface; Described the first sideFace and the second side clamp described pump sheet, and described sealing surface covers described wall body; Wherein, described sealing surfaceThe outer surface of described wall body contacts cooperation with described drive unit dorsad, and described wearing face is arranged at described envelopeClose the outer surface of face.
4. infusion pump pump chip module according to claim 2, is characterized in that, described protective sheet comprisesThe first side, the second side and be connected to the first side and the second side between sealing surface; Described protective sheetThe first side and/or the second side be provided with back-off, the corresponding described back-off of described pump sheet is provided with mounting groove;Described the first side and the second side fit in described pump sheet, and described back-off is embedded in described mounting groove, instituteState sealing surface and cover described wall body; Wherein, described sealing surface dorsad described wall body outer surface with described in driveMoving device contact coordinates, and described wearing face is arranged at the outer surface of described sealing surface.
5. infusion pump pump chip module according to claim 2, is characterized in that, described protective sheet comprisesThe first side, the second side and be connected to the first side and the second side between sealing surface; Described protective sheetThe first side and/or the second side be provided with back-off, the corresponding described back-off of described pump sheet is provided with positioning step,Described the first side and the second side fit in described pump sheet, and described back-off is supported on described positioning step,Described sealing surface covers described wall body; Wherein, described sealing surface dorsad described wall body outer surface with described inDrive unit contact coordinates, and described wearing face is arranged at the outer surface of described sealing surface.
6. according to the infusion pump pump chip module described in claim 3-5 any one, it is characterized in that, described anti-Bluff piece also comprises and is formed between described the first side and the second side and the opening relative with described sealing surfaceEnd, the width of described openend is less than the width of described sealing surface, and described the first side and the second side are from folderTightly on described pump sheet.
7. infusion pump pump chip module according to claim 2, is characterized in that, described wall body is provided withGroove, described protective sheet comprises sealing surface and is formed at the connecting portion on sealing surface; Described connecting portion snaps in instituteState in groove, described sealing surface covers the opening of described groove; Wherein, described sealing surface described wall dorsadThe outer surface of body contacts cooperation with described drive unit, and described wearing face is arranged at the appearance of described sealing surfaceFace.
8. according to the infusion pump pump chip module described in any one in claim 2-5 and 7, it is characterized in that,Described protective sheet is sheet metal.
9. infusion pump pump chip module according to claim 1, is characterized in that, described wearing face isBe arranged at the metal coating on described hole wall.
10. an infusion pump, comprises pump case, is supported in the woven hose on pump case, and is arranged in pump caseAnd act on the vermiculator of described woven hose; Described vermiculator comprises motor, Coupling Shaft and drive unit,The output shaft of described motor is connected to described Coupling Shaft, and described drive unit is sleeved in described Coupling Shaft; ItsBe characterised in that, described vermiculator also comprises the pump chip module described in claim 1-9 any one, described switchingAxle is through the installing hole of described pump sheet, and described drive unit is positioned at described installing hole and is positioned described installationBetween hole and Coupling Shaft, described working end, under the drive of described drive unit, acts on described woven hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521046583.8U CN205235074U (en) | 2015-12-15 | 2015-12-15 | Transfer pump and pump piece subassembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521046583.8U CN205235074U (en) | 2015-12-15 | 2015-12-15 | Transfer pump and pump piece subassembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205235074U true CN205235074U (en) | 2016-05-18 |
Family
ID=55934160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521046583.8U Active CN205235074U (en) | 2015-12-15 | 2015-12-15 | Transfer pump and pump piece subassembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205235074U (en) |
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2015
- 2015-12-15 CN CN201521046583.8U patent/CN205235074U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: MINDRAY No. 1203 518000 light production base in Guangdong province Shenzhen Guangming Street South Yu Tong Road No. 2 building, 5 floor Patentee after: Shenzhen MINDRAY Technology Co., Ltd. Address before: The 1 District 518000 in Guangdong province Shenzhen City Xili Nanshan District Baiwang Industrial Park 1 Building 2 floor letter Patentee before: Shengke Medical Instrument Technology Development Co., Ltd., Shenzhen City |