CN203710459U - Medical injection pump and floating screw system applied to same - Google Patents
Medical injection pump and floating screw system applied to same Download PDFInfo
- Publication number
- CN203710459U CN203710459U CN201420041655.9U CN201420041655U CN203710459U CN 203710459 U CN203710459 U CN 203710459U CN 201420041655 U CN201420041655 U CN 201420041655U CN 203710459 U CN203710459 U CN 203710459U
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- China
- Prior art keywords
- guide rod
- leading screw
- driving arm
- screw
- pushing block
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A floating screw system applied to a medical injection pump comprises a driving support, a lead screw, guide rods, driving push blocks and an unfolder sleeve. The guide rods are arranged on the driving support and are parallel to the axis of the lead screw, the driving push blocks sleeve the guide rods, the unfolder sleeve sleeves the lead screw which is provided with a screw nut, and the unfolder sleeve is connected with the screw nut and is movably arranged on the driving support. One end of the lead screw is rotatably arranged on the driving support while the other end of the same is sleeved in the unfolder sleeve to be arranged on the driving support through the unfolder sleeve in a floating manner. The driving push blocks are clamped with the unfolder sleeve. The utility model further provides the medical injection pump provided with the floating screw system. By the floating screw system that one end of the lead screw is fixed while the other end is unrestraint, the lead screw can float smoothly to adapt to guiding of the guide rods, driving efficiency of a guide-rod mechanism of the lead screw is improved, and guiding precision of the guide rods is improved.
Description
Technical field
This utility model belongs to armarium technical field, more particularly, and particularly a kind of unsteady spindle arrangement and a kind of medication injections pump that is applied to medication injections pump.
Background technology
The leading screw guide-bar mechanism that existing domestic and international syringe pump is joined, generally, leading screw adopts two ends to fix, and guide rod adopts both ends or one end to fix, guide rod hole on the pushing block being connected with feed screw nut is wholecircle hole, and guide rod is that feed screw nut and pushing block play guiding and increase mechanism's rigidity.
Due to part processing and assembling equal error reason, nature can produce leading screw axis and the uneven situation of guide rod axis, can have a negative impact to the transmission efficiency of leading screw guide-bar mechanism like this.Part processing precision is high, although the transmission efficiency of leading screw guide-bar mechanism can be better, and part processing charges costliness, cost is higher; Part processing precision is low, can reduce the efficiency of leading screw guide-bar mechanism, and guide rod guide effect weakens.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of unsteady spindle arrangement and a kind of medication injections pump that this unsteady spindle arrangement is installed that is applied to medication injections pump, in order to solve the problems of the technologies described above.
For this reason, this utility model provides following technical scheme.
A kind of unsteady spindle arrangement that is applied to medication injections pump, comprise driving arm, leading screw, guide rod, driving pushing block and injector sleeve pipe, described guide rod is arranged on described driving arm, described guide rod and described lead screw shaft line parallel, described driving pushing block is sheathed on described guide rod, and described injector casing pipe sleeve is located on described leading screw, on described leading screw, is provided with feed screw nut, described injector sleeve pipe is connected with described feed screw nut
Described injector sleeve pipe is arranged on described driving arm movably;
One end of described leading screw adopts mode to be rotationally arranged on described driving arm, and the other end of described leading screw is inserted in to described injector sleeve pipe and is floated and be arranged on described driving arm by described injector sleeve pipe;
Described driving pushing block and the clamping of described injector sleeve pipe.
Preferably, offer leading screw installing hole on described driving arm, described leading screw stretches out described driving arm through described leading screw installing hole;
Described leading screw is positioned on the Outboard Sections of described driving arm roller gear and thrust bearing is installed, and described leading screw is positioned in the inner side part of described driving arm guide rod side direction packing ring and axle split washer are installed.
Preferably, described guide rod includes two, and two described guide rods are parallel to each other;
On described driving arm, be provided with guide rod catch;
Described guide rod is fixed on driving arm by described guide rod catch.
Preferably, on described driving pushing block, be provided with copper embedding mother and transmit bayonet lock;
Described transmission bayonet lock is by screw and described copper embedding is female is connected, described transmission bayonet lock and described feed screw nut matched in clearance, and described driving pushing block is telescopic joint by described transmission bayonet lock and described feed screw nut and described injector.
Preferably, offer two guide rod holes that pass for described guide rod on described driving pushing block, wherein, a described guide rod hole is circular configuration, and described in another, guide rod hole is semicircular structure.
This utility model also provides a kind of medication injections pump, includes the unsteady spindle arrangement that is applied to medication injections pump described above.
This utility model provides a kind of unsteady spindle arrangement that is applied to medication injections pump, comprise driving arm, leading screw, guide rod, driving pushing block and injector sleeve pipe, described guide rod is arranged on described driving arm, described guide rod and described lead screw shaft line parallel, described driving pushing block is sheathed on described guide rod, described injector casing pipe sleeve is located on described leading screw, on described leading screw, is provided with feed screw nut, and described injector sleeve pipe is connected with described feed screw nut.Based on this structure, this utility model has been made following architecture advances: described injector sleeve pipe is arranged on described driving arm movably; One end of described leading screw adopts mode to be rotationally arranged on described driving arm, and the other end of described leading screw is inserted in to described injector sleeve pipe and is floated and be arranged on described driving arm by described injector sleeve pipe; Described driving pushing block and the clamping of described injector sleeve pipe.
Design by said structure, leading screw adopts the unconfined floating structure design of the fixing other end in one end, and it can float smoothly, adapts to guide rod guiding, reaches the object that improves leading screw direct lever system transmission efficiency and transmission accuracy.
This utility model also provides a kind of medication injections pump that above-mentioned unsteady spindle arrangement is installed, and due to the structural design of the spindle arrangement that floats, this medication injections pump has higher transmission efficiency and transmission accuracy.
Design by said structure, the utlity model has following advantage:
1, this utility model adopts leading screw relocation mechanism, and leading screw one end is fixed, and the other end is without constraint, and leading screw can float smoothly, adapts to guide rod guiding, improves the transmission efficiency of leading screw guide-bar mechanism.
2, guide rod installing hole, without making slotted hole, improves guide rod guiding accuracy.
A guide rod hole of the pushing block of 3, installing on guide rod adopts open semi-circular hole, and two guide rod hole centre-to-centre spacing are slightly less than two centers of pilot distances, in the situation that reducing pushing block machining accuracy, ensure that pushing block is arranged on guide rod smoothly.
Brief description of the drawings
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes 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.
Fig. 1 is the external structure schematic diagram that is applied to the unsteady spindle arrangement of medication injections pump in a kind of embodiment of this utility model;
Fig. 2 is the internal structure schematic diagram that is applied to the unsteady spindle arrangement of medication injections pump in a kind of embodiment of this utility model;
In Fig. 1 and Fig. 2, the corresponding relation of component names and Reference numeral is:
Leading screw hold-down screw 1, locking spring 2, roller gear 3, tapping screw 4,
Thrust bearing 5, guide rod catch 6, guide rod side direction packing ring 7, split washer 8 for axle,
Guide rod 9, leading screw 10, drive pushing block 11, feed screw nut 12, driving arm 13,
Injector sleeve pipe 14, transmission bayonet lock 15, sunk screw 16.
Detailed description of the invention
In order to make those skilled in the art person understand better this utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the external structure schematic diagram that is applied to the unsteady spindle arrangement of medication injections pump in a kind of embodiment of this utility model; Fig. 2 is the internal structure schematic diagram that is applied to the unsteady spindle arrangement of medication injections pump in a kind of embodiment of this utility model.
Technical problem to be solved in the utility model is to provide a kind of screw mechanism that floats, and it can overcome the shortcomings such as the part processing cost that existing leading screw guide-bar mechanism exists is high, efficiency is low, transmission guidance quality is poor, and transmission accuracy is high, easy for installation.
The technical scheme that this utility model solves the problems of the technologies described above is as follows:
A kind of unsteady screw structure that is applied to medication injections pump, comprise driving arm 13 (sheet metal component), driving arm 13 is provided with installing hole, hole forms driving arm 13 assemblies around after plastics are added in injection moulding, driving arm 13 is provided with leading screw installing hole, leading screw 10 is installed on leading screw installing hole, feed screw nut 12 is installed on leading screw 10, leading screw side direction packing ring is installed and split washer 8 (driving arm 13 assembly inner sides) for axle on leading screw 10, thrust bearing 5 is installed on leading screw 10, roller gear 3, locking spring 2 and leading screw hold-down screw 1 (driving arm 13 assembly outsides), leading screw side direction packing ring, split washer 8 for axle, thrust bearing 5, roller gear 3, locking spring 2 and leading screw hold-down screw 1 are positioned on leading screw 10 on driving arm 13 assemblies jointly, thrust bearing 5 is installed on driving arm 13 by leading screw 10, the locking spring 2 of leading screw hold-down screw 1 is stuck on the bulge-structure of roller gear 3, the bulge-structure of roller gear 3 can prevent that the locking spring 2 of leading screw hold-down screw 1 from rotating counterclockwise, the locking spring 2 of leading screw hold-down screw 1 wraps up leading screw hold-down screw 1, both can only rotate together, roller gear 3 drives leading screw 10 to rotate together, two guide rods 9 are installed on driving arm 13 assemblies, two guide rods 9 are fixed on driving arm 13 assemblies by guide rod catch 6 and screw, on two guide rods 9, be provided with and drive pushing block 11, drive on pushing block 11 and be provided with and transmit bayonet lock 15, transmitting bayonet lock 15 is fixed by screws on the copper embedding mother who drives on pushing block 11, transmitting bayonet lock 15 is stuck on feed screw nut 12 and injector sleeve pipe 14, by feed screw nut 12, drive pushing block 11, injector sleeve pipe 14 is fixed together, injector sleeve pipe 14 is enclosed within on leading screw 10, feed screw nut 12, drive pushing block 11 and transmit bayonet lock 15 rectilinear motion that rotatablely moving of leading screw 10 is converted into injector sleeve pipe 14.This utility model comprises driving arm 13, roller gear 3, leading screw hold-down screw 1, leading screw hold-down screw 1, locking spring 2, thrust bearing 3, guide rod side direction packing ring 7, with split washer 8 for axle, axle is fixed on leading screw 10 on driving arm 13 with the fixing form in one end with split washer 8, feed screw nut 12 is installed on leading screw 10, two guide rods 9 are installed on driving arm 13, on guide rod 9, install and drive pushing block (cupric embedding mother), drive on pushing block 11 and install and transmit bayonet lock 15 and sunk screw 16, transmit bayonet lock 15 and will drive pushing block 11, together with injector sleeve pipe 14 fixes with feed screw nut 12.
The beneficial effects of the utility model are:
1, this utility model adopts leading screw relocation mechanism, and leading screw 10 one end are fixed, and the other end is without constraint, and leading screw 10 can float smoothly, adapts to guide rod 9 and leads, and improves the transmission efficiency of leading screw guide rod 9 mechanisms.
2, guide rod 9 installing holes, without making slotted hole, improve guide rod 9 guiding accuracies.
A guide rod 9 holes of the pushing block of 3, installing on guide rod 9 adopt open semi-circular hole, and two guide rod 9 hole centre-to-centre spacing are slightly less than two guide rod 9 centre-to-centre spacing, in the situation that reducing pushing block machining accuracy, ensure that pushing block is arranged on guide rod 9 smoothly.
1. one kind is applied to the unsteady screw structure of medication injections pump, comprise driving arm 13 (sheet metal component), driving arm 13 is provided with installing hole, hole forms driving arm 13 assemblies around after plastics are added in injection moulding, driving arm 13 assemblies are provided with leading screw installing hole, leading screw 10 is installed on leading screw installing hole, feed screw nut 12 is installed on leading screw 10, on leading screw 10, install on leading screw side direction packing ring and axle split washer 8 (driving arm 13 assembly inner sides) leading screw 10 thrust bearing 5 is installed, roller gear 3, locking spring 2 and leading screw hold-down screw 1 (driving arm 13 assembly outsides), leading screw side direction packing ring, split washer 8 for axle, thrust bearing 5, roller gear 3, locking spring 2 and leading screw hold-down screw 1 are positioned on leading screw 10 on driving arm 13 assemblies jointly, thrust bearing 5 is installed on driving arm 13 by leading screw 10, the locking spring 2 of leading screw hold-down screw 1 is stuck on the bulge-structure of roller gear 3, the bulge-structure of roller gear 3 can prevent that the locking spring 2 of leading screw hold-down screw 1 from rotating counterclockwise, the locking spring 2 of leading screw hold-down screw 1 wraps up leading screw hold-down screw 1, both can only rotate together, roller gear 3 drives leading screw 10 to rotate together, two guide rods 9 are installed on driving arm 13 assemblies, two guide rods 9 are fixed on driving arm 13 assemblies by guide rod catch 6 and screw, on two guide rods 9, be provided with and drive pushing block 11, drive on pushing block 11 and be provided with and transmit bayonet lock 15, transmitting bayonet lock 15 is fixed by screws on the copper embedding mother who drives on pushing block 11, transmitting bayonet lock 15 is stuck on feed screw nut 12 and injector sleeve pipe 14, by feed screw nut 12, drive pushing block 11, injector sleeve pipe 14 is fixed together, injector sleeve pipe 14 is enclosed within on leading screw 10, feed screw nut 12, drive pushing block 11 and transmit bayonet lock 15 rectilinear motion that rotatablely moving of leading screw 10 is converted into injector sleeve pipe 14.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, this utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. one kind is applied to the unsteady spindle arrangement of medication injections pump, comprise driving arm, leading screw, guide rod, driving pushing block and injector sleeve pipe, described guide rod is arranged on described driving arm, described guide rod and described lead screw shaft line parallel, described driving pushing block is sheathed on described guide rod, and described injector casing pipe sleeve is located on described leading screw, on described leading screw, be provided with feed screw nut, described injector sleeve pipe is connected with described feed screw nut, it is characterized in that
Described injector sleeve pipe is arranged on described driving arm movably;
One end of described leading screw adopts mode to be rotationally arranged on described driving arm, and the other end of described leading screw is inserted in to described injector sleeve pipe and is floated and be arranged on described driving arm by described injector sleeve pipe;
Described driving pushing block and the clamping of described injector sleeve pipe.
2. the unsteady spindle arrangement that is applied to medication injections pump according to claim 1, is characterized in that,
On described driving arm, offer leading screw installing hole, described leading screw stretches out described driving arm through described leading screw installing hole;
Described leading screw is positioned on the Outboard Sections of described driving arm roller gear and thrust bearing is installed, and described leading screw is positioned in the inner side part of described driving arm guide rod side direction packing ring and axle split washer are installed.
3. the unsteady spindle arrangement that is applied to medication injections pump according to claim 1, is characterized in that,
Described guide rod includes two, and two described guide rods are parallel to each other;
On described driving arm, be provided with guide rod catch;
Described guide rod is fixed on driving arm by described guide rod catch.
4. the unsteady spindle arrangement that is applied to medication injections pump according to claim 1, is characterized in that,
On described driving pushing block, be provided with copper embedding mother and transmit bayonet lock;
Described transmission bayonet lock is by screw and described copper embedding is female is connected, described transmission bayonet lock and described feed screw nut matched in clearance, and described driving pushing block is telescopic joint by described transmission bayonet lock and described feed screw nut and described injector.
5. the unsteady spindle arrangement that is applied to medication injections pump according to claim 1, is characterized in that,
On described driving pushing block, offer two guide rod holes that pass for described guide rod, wherein, a described guide rod hole is circular configuration, and described in another, guide rod hole is semicircular structure.
6. a medication injections pump, includes direct lever system, it is characterized in that,
Described direct lever system is the unsteady spindle arrangement that is applied to medication injections pump as claim 1 to 5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041655.9U CN203710459U (en) | 2014-01-17 | 2014-01-17 | Medical injection pump and floating screw system applied to same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041655.9U CN203710459U (en) | 2014-01-17 | 2014-01-17 | Medical injection pump and floating screw system applied to same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203710459U true CN203710459U (en) | 2014-07-16 |
Family
ID=51149663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420041655.9U Expired - Fee Related CN203710459U (en) | 2014-01-17 | 2014-01-17 | Medical injection pump and floating screw system applied to same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203710459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093326A1 (en) * | 2019-11-15 | 2021-05-20 | 深圳迈瑞科技有限公司 | Syringe driver |
-
2014
- 2014-01-17 CN CN201420041655.9U patent/CN203710459U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093326A1 (en) * | 2019-11-15 | 2021-05-20 | 深圳迈瑞科技有限公司 | Syringe driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20200117 |