CN213884575U - High-precision stroke detection device moving at set speed - Google Patents
High-precision stroke detection device moving at set speed Download PDFInfo
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- CN213884575U CN213884575U CN202022514223.3U CN202022514223U CN213884575U CN 213884575 U CN213884575 U CN 213884575U CN 202022514223 U CN202022514223 U CN 202022514223U CN 213884575 U CN213884575 U CN 213884575U
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- code bar
- detection
- injector
- circuit board
- rack
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Abstract
The invention discloses a high-precision stroke detection device moving at a set speed, and relates to the technical field of medical injection pumps; the sliding mechanism is provided with a circuit board, the circuit board is provided with a detection optocoupler, a code bar block is arranged above the circuit board, the end faces of two ends of the code bar block are respectively fixed on a rack large wallboard and a rack small wallboard through screws, a code bar capable of positioning is arranged on the code bar block, and the code bar is positioned on a traveling route of the detection optocoupler, so that the detection optocoupler detects the current state of the code bar, and the detection optocoupler feeds back the detected code bar state information to the singlechip through a logic circuit, thereby completing position detection; the invention has simple structure, low cost and simple assembly; the miniaturization of the injection pump is convenient; the residual quantity of the liquid medicine in the injector in the injection process of the injection pump can be accurately detected; meanwhile, the stability is high during operation, and the structure is compact.
Description
Technical Field
The invention belongs to the technical field of medical injection pumps, and particularly relates to a high-precision stroke detection device moving at a set speed.
Background
The common injection pump generally comprises a stepping motor, a speed reducing mechanism, a screw rod, an opening and closing nut mechanism, a propelling mechanism, an injector specification detection device and the like. The stepping motor drives the screw rod to operate, and the screw rod drives the sliding block mechanism connected with the propelling mechanism to operate, so that the syringe clamped in the propelling mechanism is pushed to inject liquid medicine by hand. Related manufacturers rely on adding a potentiometer which is connected with the injector propelling mechanism into the machine frame, and detect the change of resistance of the potentiometer to detect the residual quantity of the liquid medicine in the injector. However, the above-mentioned detection device has a complicated structure and high cost, and it is difficult to miniaturize the syringe pump.
Disclosure of Invention
The device aims to solve the problems that the existing detection device of the injection pump has a complex structure and high cost and is difficult to miniaturize the injection pump; the invention aims to provide a high-precision stroke detection device moving at a set speed.
The invention relates to a high-precision stroke detection device moving at a set speed, which comprises a motor, a screw rod, a sliding mechanism and a propelling mechanism, wherein the motor is connected with the screw rod; the sliding mechanism is provided with a circuit board, the circuit board is provided with a detection optocoupler, a code bar block is arranged above the circuit board, the end faces of two ends of the code bar block are respectively fixed on a rack large wallboard and a rack small wallboard through screws, a code bar capable of positioning is arranged on the code bar block, and the code bar is positioned on a traveling route of the detection optocoupler, so that the detection optocoupler detects the current state of the code bar, and the detection optocoupler feeds back the detected code bar state information to the singlechip through a logic circuit, thereby completing position detection; when the stroke detection device is used on an injection pump, a bottom shell of the injection pump is arranged on the same side of a large rack wallboard and a small rack wallboard, an injector is arranged on the bottom shell of the injection pump, a barrel body of the injector is fixed by a handle, a barrel body check ring of the injector is fixed by a pressing sheet, and a press hand of the injector is fixed on a propelling mechanism; the rotating shaft of the motor is connected with one end of the screw rod through the gear pair, the motor drives the screw rod to operate, and the screw rod drives the sliding mechanism which is connected with the propelling mechanism into a whole to operate, so that the syringe clamped in the propelling mechanism is pushed to inject the liquid medicine by hand.
Preferably, the number of the detection optocouplers is 3.
Compared with the prior art, the invention has the beneficial effects that:
the structure is simple, the cost is low, and the assembly is simple; the miniaturization of the injection pump is convenient; the residual quantity of the liquid medicine in the injector in the injection process of the injection pump can be accurately detected;
and meanwhile, the stability is high during operation, and the structure is compact.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial exploded view of the present invention;
FIG. 3 is a schematic structural diagram of a circuit board and a code bar block according to the present invention;
fig. 4 is a schematic structural diagram of a code strip block in the present invention.
In the figure: 1-a bottom case of a syringe pump; 2-a syringe; 3-pulling a handle; 4-tabletting; 5-a propulsion mechanism; 6-a sliding mechanism; 7-a screw rod; 8, a motor; 9-a rack large wall plate; 10-a rack small wall plate; 11-a circuit board; 12-a detection optocoupler; 13-code bar block; 14-code bar.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
As shown in fig. 1, fig. 2, fig. 3, and fig. 4, the following technical solutions are adopted in the present embodiment: the device comprises a motor 8, a screw rod 7, a sliding mechanism 6 and a propelling mechanism 5; a circuit board 11 is installed on the sliding mechanism 6, a detection optocoupler 12 is installed on the circuit board 11, a code bar block 13 is arranged above the circuit board 11, the end faces of two ends of the code bar block 13 are respectively fixed on a rack large wall board 9 and a rack small wall board 10 through screws, a code bar 14 capable of positioning is arranged on the code bar block 13, and the code bar 14 is positioned on a traveling route of the detection optocoupler 12, so that the detection optocoupler 12 can detect the current state of the code bar, and the detection optocoupler 12 feeds the detected code bar state information back to a single chip microcomputer through a logic circuit, thereby completing position detection; when the stroke detection device is used on an injection pump, a bottom shell 1 of the injection pump is arranged on the same side of a large rack wall plate 9 and a small rack wall plate 10, an injector 2 is arranged on the bottom shell 1 of the injection pump, a barrel body of the injector 2 is fixed by a handle 3, a barrel body check ring of the injector 2 is fixed by a pressing sheet 4, and a press hand of the injector 2 is fixed on a propelling mechanism 5; a rotating shaft of the motor 8 is connected with one end of the screw rod 7 through a gear pair, the motor 8 drives the screw rod 7 to operate, and the screw rod 7 drives the sliding mechanism 6 which is connected with the propelling mechanism 5 to operate, so that the syringe 2 clamped in the propelling mechanism 5 is pushed to inject liquid medicine by hand.
Further, the number of the detection optocouplers 12 is 3.
The working principle of the specific embodiment is as follows: when the stroke detection device is used on an injection pump, a bottom shell 1 of the injection pump is arranged at the same side of a large rack wall plate 9 and a small rack wall plate 10, a barrel body of an injector 2 is fixed by a handle 3, a barrel body retainer ring of the injector 2 is fixed by a pressing sheet 4, and a pressing hand of the injector 2 is fixed on a propelling mechanism 5; the motor 8 drives the screw rod 7 to operate, the screw rod 7 drives the sliding mechanism 6 which is connected with the propelling mechanism 5 to operate, and therefore the syringe 2 clamped in the propelling mechanism 5 is pushed to inject liquid medicine by hand; the detection device has the advantages of simple structure, low cost, simple assembly, convenience in miniaturization of the injection pump and capability of accurately detecting the residual amount of the liquid medicine in the injector in the injection process of the injection pump.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. A high-precision stroke detection device moving at a set speed comprises a motor, a screw rod, a sliding mechanism and a propelling mechanism; the method is characterized in that: the sliding mechanism is provided with a circuit board, the circuit board is provided with a detection optocoupler, a code bar block is arranged above the circuit board, the end faces of two ends of the code bar block are respectively fixed on a rack large wallboard and a rack small wallboard through screws, a code bar capable of positioning is arranged on the code bar block, and the code bar is positioned on a traveling route of the detection optocoupler, so that the detection optocoupler detects the current state of the code bar, and the detection optocoupler feeds back the detected code bar state information to the singlechip through a logic circuit, thereby completing position detection; when the stroke detection device is used on an injection pump, a bottom shell of the injection pump is arranged on the same side of a large rack wallboard and a small rack wallboard, an injector is arranged on the bottom shell of the injection pump, a barrel body of the injector is fixed by a handle, a barrel body check ring of the injector is fixed by a pressing sheet, and a press hand of the injector is fixed on a propelling mechanism; the rotating shaft of the motor is connected with one end of the screw rod through the gear pair, the motor drives the screw rod to operate, and the screw rod drives the sliding mechanism which is connected with the propelling mechanism into a whole to operate, so that the syringe clamped in the propelling mechanism is pushed to inject the liquid medicine by hand.
2. A high accuracy stroke detecting device moving at a set speed according to claim 1, wherein: the number of the detection optocouplers is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514223.3U CN213884575U (en) | 2020-11-03 | 2020-11-03 | High-precision stroke detection device moving at set speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514223.3U CN213884575U (en) | 2020-11-03 | 2020-11-03 | High-precision stroke detection device moving at set speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213884575U true CN213884575U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022514223.3U Active CN213884575U (en) | 2020-11-03 | 2020-11-03 | High-precision stroke detection device moving at set speed |
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| Country | Link |
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| CN (1) | CN213884575U (en) |
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2020
- 2020-11-03 CN CN202022514223.3U patent/CN213884575U/en active Active
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