CN117968607A - Pull rope type displacement sensor - Google Patents
Pull rope type displacement sensor Download PDFInfo
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- CN117968607A CN117968607A CN202410368410.5A CN202410368410A CN117968607A CN 117968607 A CN117968607 A CN 117968607A CN 202410368410 A CN202410368410 A CN 202410368410A CN 117968607 A CN117968607 A CN 117968607A
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- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
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- 238000013461 design Methods 0.000 abstract description 4
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- 238000005259 measurement Methods 0.000 description 11
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Abstract
The invention provides a stay cord type displacement sensor, which comprises a main body, a rotating shaft, a winding wheel, a wire harness, an encoder magnet, an acquisition unit and a reset unit, wherein the main body is provided with a plurality of sensors; the upper part of the main body is provided with a first accommodating space, and the first accommodating space and the second accommodating space are arranged in a separated mode; the rotating shaft extends from the first accommodating space to the second accommodating space; the wire winding wheel located in the first accommodating space is fixed on the rotating shaft, the first end of the wire harness is wound on the wire winding wheel, and the second end of the wire harness extends to the outside of the main body to fix the unit to be tested; the encoder magnet is fixed on the winding wheel; the acquisition unit is close to the encoder magnet and is used for acquiring the rotation angle of the encoder magnet; the reset unit positioned in the second accommodating space is connected with the rotating shaft. The invention has the technical effects of reasonable design, wide application range, convenient use, small volume and low cost.
Description
Technical Field
The invention belongs to the technical field of displacement sensors, and particularly relates to a pull rope type displacement sensor.
Background
The pull rope type sensor is a sensor for realizing displacement measurement by utilizing the pull rope principle, has the characteristics of simple structure, convenient installation, high precision, good reliability and the like, and is widely applied to the fields of various mechanical displacement measurements, object positioning, automatic control and the like. With the development of technology, the pull rope type sensor is remarkably improved in the aspects of precision, stability, environmental adaptability and the like, and meets the requirements of higher and higher industrial measurement.
However, the existing pull-rope type displacement sensor has the defect of larger volume, which limits the application of the pull-rope type displacement sensor in some special occasions to a certain extent. For example, in application scenarios where space is narrow, the environment is complex, or the weight requirements are strict, a bulky pull-cord type displacement sensor may not meet the requirements.
Disclosure of Invention
The invention aims at solving at least one of the technical problems existing in the prior art and provides a new technical scheme of a pull rope type displacement sensor.
According to one aspect of the present invention, there is provided a pull-cord type displacement sensor comprising:
The device comprises a main body, wherein a first accommodating space is formed in the upper part of the main body, a second accommodating space is formed in the lower part of the main body, and the first accommodating space and the second accommodating space are arranged in a separated mode;
the rotating shaft extends from the first accommodating space to the second accommodating space and is rotationally connected with the main body;
The wire winding wheel is positioned in the first accommodating space, the first end of the wire harness is wound on the wire winding wheel, and the second end of the wire harness extends to the outside of the main body to fix the unit to be tested; the encoder magnet is fixed on the winding wheel; the acquisition unit is close to the encoder magnet and is used for acquiring the rotation angle of the encoder magnet;
The reset unit is positioned in the second accommodating space and is connected with the rotating shaft;
The unit to be tested moves and pulls the wire harness to enable the wire winding wheel to rotate along a first direction, and the acquisition unit acquires the rotation angle of the encoder magnet to determine the displacement of the unit to be tested;
When the wire harness is free, the wire winding wheel rotates along a second direction under the action of the reset unit and drives the wire harness to be stored in the wire winding wheel; wherein the first direction is opposite to the second direction.
Optionally, the main body includes a first housing, a second housing, and a third housing;
The first shell, the second shell and the third shell are detachably connected together, and the first shell and the second shell are enclosed to form the first accommodating space; the second shell and the third shell enclose to form the second accommodating space.
Optionally, the pull-rope displacement sensor further comprises a first bearing and a second bearing;
The first bearing is arranged on the first shell; one end of the rotating shaft is rotationally connected with the first shell through the first bearing;
The second bearing is arranged on the second shell; the middle part of the rotating shaft is rotationally connected with the second shell through the second bearing.
Optionally, the pull-rope type displacement sensor further comprises a first embedded nut and a bolt;
the first shell is provided with a first embedded nut, and the second shell and the third shell are respectively provided with a mounting hole corresponding to the first embedded nut;
The bolts sequentially penetrate through the mounting holes of the third shell, the mounting holes of the second shell and the first embedded nuts on the first shell to fix the first shell, the second shell and the third shell together.
Optionally, the pull-rope type displacement sensor further comprises an external port, wherein the external port is positioned at the outer side of the first shell, and the second end of the wire harness is fixed to the external port;
The external port is used for fixing the unit to be tested.
Optionally, the pull-rope type displacement sensor further comprises a second embedded nut;
the second embedded nut is arranged on one side, far away from the wire harness, of the peripheral port, and can be connected with the unit to be tested through the second embedded nut.
Optionally, the pull-string displacement sensor further comprises a positioning bead:
the first shell is provided with a wire slot, and the second end of the wire harness is laid along the inside of the wire slot;
The locating bead is arranged on the first shell, and the locating bead is matched with the wire slot to limit the wire harness.
Optionally, the wire harness is a nylon wire harness.
Optionally, the reset unit includes a coil spring shaft and a coil spring, both of which are located in the second accommodating space;
The coil spring shaft is fixed on the rotating shaft, one end of the coil spring is clamped on the coil spring shaft, and the other end of the coil spring is fixed on the second shell.
Optionally, the materials of the first shell, the second shell and the third shell are all carbon fibers.
The invention has the technical effects that:
In the embodiment of the application, the pull rope type displacement sensor has reasonable structural design and smaller volume, can be applied to application scenes with narrow space, complex environment or strict weight requirements, and has wider application range.
In addition, when the unit to be tested moves and the wire harness is pulled out, the wire coiling wheel rotates along the first direction, and the acquisition unit acquires the rotation angle of the encoder magnet to determine the displacement of the unit to be tested; when the wire harness is free, the wire winding wheel rotates along the second direction under the action of the reset unit and drives the wire harness to be stored in the wire winding wheel; wherein the first direction is opposite to the second direction. On the one hand, the displacement of the unit to be measured can be measured rapidly and accurately, and on the other hand, the storage of the wire harness can be realized through the reset unit, so that the measurement is convenient again, and the use is very convenient.
Drawings
FIG. 1 is a schematic diagram of a pull-string type displacement sensor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an explosion structure of a pull-string type displacement sensor according to an embodiment of the present invention;
FIG. 3 is a top view of a pull-cord type displacement sensor according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3;
FIG. 5 is a side view of a pull-cord type displacement sensor according to an embodiment of the present invention;
Fig. 6 is a cross-sectional view taken along the direction B-B in fig. 5.
In the figure: 1. a main body; 101. a first housing; 102. a second housing; 103. a third housing; 104. a first accommodation space; 105. a second accommodation space; 2. a rotation shaft; 3. a reel; 4. a wire harness; 5. an encoder magnet; 6. an acquisition unit; 71. a coil spring shaft; 72. a coil spring; 81. a first bearing; 82. a second bearing; 9. the first embedded nut; 10. a bolt; 11. a peripheral port; 12. the second embedded nut; 13. positioning beads; 14. a third embedded nut; 15. a fixing bolt; 16. and (5) fixing a nut.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
According to an aspect of the present invention, referring to fig. 1 to 6, there is provided a pull-string type displacement sensor for precisely measuring a position of a movement of a unit under test, i.e., for accurately measuring the displacement of the unit under test by converting a mechanical motion into an electrical signal.
Specifically, the pull-cord type displacement sensor includes:
The device comprises a main body 1, wherein a first accommodating space 104 is arranged at the upper part of the main body 1, a second accommodating space 105 is arranged at the lower part of the main body, and the first accommodating space 104 and the second accommodating space 105 are arranged in a separated mode;
A rotation shaft 2, wherein the rotation shaft 2 extends from the first accommodating space 104 to the second accommodating space 105, and the rotation shaft 2 is rotatably connected with the main body 1;
The wire winding wheel 3, the wire harness 4, the encoder magnet 5 and the acquisition unit 6, wherein the wire winding wheel 3 positioned in the first accommodating space 104 is fixed on the rotating shaft 2, the first end of the wire harness 4 is wound on the wire winding wheel 3, and the second end of the wire harness 4 extends to the outside of the main body 1 to fix the unit to be tested; the encoder magnet 5 is fixed on the winding wheel 3; the acquisition unit 6 is close to the encoder magnet 5 and is used for acquiring the rotation angle of the encoder magnet 5;
A reset unit, which is located in the second accommodating space 105 and is connected with the rotating shaft 2;
the unit to be tested moves and pulls the wire harness 4 to enable the wire winding wheel 3 to rotate along a first direction, and the acquisition unit 6 acquires the rotation angle of the encoder magnet 5 to determine the displacement of the unit to be tested;
When the wire harness 4 is free, the wire winding wheel 3 rotates along a second direction under the action of the resetting unit and drives the wire harness 4 to be stored in the wire winding wheel 3; wherein the first direction is opposite to the second direction.
In the embodiment of the application, the pull rope type displacement sensor has reasonable structural design and smaller volume, is very convenient to carry, and can be applied to application scenes with narrow space, complex environment or strict weight requirements, and the application range is wider.
In addition, when the unit to be measured moves and pulls the wire bundle 4 to enable the wire winding wheel 3 to rotate along the first direction, the acquisition unit 6 acquires the rotation angle of the encoder magnet 5 to determine the displacement of the unit to be measured; when the wire harness 4 is free, the wire winding wheel 3 rotates along the second direction under the action of the resetting unit and drives the wire harness 4 to be stored in the wire winding wheel 3; wherein the first direction is opposite to the second direction. On the one hand, the displacement of the unit to be measured can be measured rapidly and accurately, and on the other hand, the storage of the wire harness 4 can be realized through the resetting unit, so that the measurement is convenient again, and the use is very convenient.
Alternatively, referring to fig. 1 and 2, the main body 1 includes a first housing 101, a second housing 102, and a third housing 103;
the first casing 101, the second casing 102 and the third casing 103 are detachably connected together, and the first casing 101 and the second casing 102 enclose to form the first accommodating space 104; the second housing 102 and the third housing 103 enclose the second accommodating space 105.
In the above embodiment, the assembly of the pull-string type displacement sensor can be quickly achieved by the first housing 101, the second housing 102, and the third housing 103.
Optionally, the pull-string displacement sensor further comprises a first bearing 81 and a second bearing 82;
The first bearing 81 is provided in the first housing 101; one end of the rotating shaft 2 is rotatably connected with the first housing 101 through the first bearing 81;
The second bearing 82 is disposed on the second housing 102; the middle part of the rotating shaft 2 is rotatably connected with the second housing 102 through the second bearing 82.
In the above embodiment, the support of the main body 1 to the rotary shaft 2 can be stably realized by the first bearing 81 and the second bearing 82, which helps to ensure the stable rotation of the rotary shaft 2, thereby realizing the measurement of the displacement of the unit to be measured.
Optionally, referring to fig. 5 and 6, the pull-string type displacement sensor further comprises a first embedded nut 9 and a bolt 10;
the first shell 101 is provided with a first embedded nut 9, and the second shell 102 and the third shell 103 are respectively provided with mounting holes corresponding to the first embedded nut 9;
The bolt 10 sequentially passes through the mounting hole of the third housing 103, the mounting hole of the second housing 102, and the first embedded nut 9 on the first housing 101 to fix the first housing 101, the second housing 102 and the third housing 103 together.
Optionally, referring to fig. 3 and 4, the pull-cord type displacement sensor further includes an external port 11, the external port 11 is located outside the first housing 101, and the second end of the wire harness 4 is fixed to the external port 11;
the external port 11 is movable to draw the wire harness 4, and the external port 11 is used for fixing the unit to be tested.
In the above embodiment, the wire harness 4 can be connected with the unit to be measured through the peripheral port 11, so that the measurement of the displacement of the unit to be measured can be conveniently and rapidly realized.
Optionally, the pull-rope type displacement sensor further comprises a second embedded nut 12;
the second embedded nut 12 is disposed on a side, far away from the wire harness 4, of the peripheral port 11, and may be connected with a unit to be tested through the second embedded nut 12.
In the above embodiment, the second embedded nut 12 may be connected to the unit to be measured, so that the connection between the pull-rope type displacement sensor and the unit to be measured may be quickly realized, so that the displacement of the unit to be measured may be quickly realized.
Optionally, the pull-string displacement sensor further comprises a positioning bead 13:
The first housing 101 is provided with a wire slot, and the second end of the wire harness 4 is laid along the inside of the wire slot;
the positioning bead 13 is disposed on the first housing 101, and the positioning bead 13 cooperates with the wire slot to limit the wire harness 4.
In the above embodiment, the positioning beads 13 cooperate with the wire grooves to limit the wire harness 4, so that the wire harness 4 inside the first housing 101 can be effectively prevented from collapsing. For example, the first housing 101 is provided with a positioning hole, the positioning bead 13 is installed in the positioning hole, and an end of the positioning bead 13 faces the wire slot.
Optionally, the wire harness 4 is a nylon wire harness. Wherein, pencil 4 is tensile nylon pencil, helps through the removal of unit that awaits measuring and then drives pencil 4 and remove to the realization is to the measurement of the displacement of unit that awaits measuring, has also guaranteed the security of pencil 4 use simultaneously, avoids influencing measurement accuracy because of pencil 4 self material.
Alternatively, referring to fig. 2 and 6, the reset unit includes a coil spring shaft 71 and a coil spring 72, and the coil spring shaft 71 and the coil spring 72 are both positioned in the second accommodating space 105;
The coil spring shaft 71 is fixed to the rotary shaft 2, and one end of the coil spring 72 is clamped to the coil spring shaft 71, and the other end is fixed to the second housing 102.
Illustratively, the second housing 102 is provided with a fixing nut 16 therein, the third housing 103 is provided with a fixing hole corresponding to the fixing nut 16, and the fixing bolt 15 is connected to the fixing nut 16 through the fixing hole of the third housing 103. Further, the end of the coil spring 72 is fixed to the fixing bolt 15 to achieve fixation of the coil spring 72.
In the above embodiment, by the cooperation of the coil spring shaft 71 and the coil spring 72, both the measurement of the displacement of the unit under test and the resetting of the wire harness 4 are facilitated. And the reset unit has simple structure, is convenient for assembly and is beneficial to compressing assembly cost.
For example, a lateral slot for snapping into the end of the coil spring 72 is provided in the middle of the coil spring shaft 71 to rotate in cooperation with the coil spring 72.
Optionally, the materials of the first casing 101, the second casing 102 and the third casing 103 are all carbon fibers.
In the above embodiment, the materials of the first housing 101, the second housing 102 and the third housing 103 are optimized, so that the volume and the quality of the pull-rope type displacement sensor are greatly reduced, the application range is expanded, and the cost is reduced.
For example, a third embedded nut 14 is disposed on one side of the first housing 101 away from the second housing 102, and the quick fixing between the pull-rope type displacement sensor and the external device can be realized through the third embedded nut 14, so that the operation is very convenient, the universality and the flexibility are high, and meanwhile, the compression manufacturing cost is also facilitated.
The principle of the pull-rope type displacement sensor is as follows:
first, the peripheral port 11 is pulled to draw out the wire harness 4, so that the reel 3 is rotated, and the rotation shaft 2 is driven to rotate. Wherein the stretching direction of the wire harness 4 coincides with the axis of movement of the unit to be tested.
Next, the rotation shaft 2 rotates to drive the encoder magnet 5 and the coil spring shaft 71 to rotate.
Again, the rotation information of the encoder magnet 5 is outputted by the acquisition unit 6, and the length information can be calculated by reading the rotation angle of the encoder magnet 5.
At the same time, rotation of the coil spring shaft 71 will twist the coil spring 72 to deform and store energy.
Finally, the peripheral port 11 is released and the energy stored by the coil spring 72 is released and used to retrieve the harness 4.
In a specific embodiment, the volume of the pull rope type displacement sensor can be reduced to 8 cubic centimeters, and the pull rope type displacement sensor can be conveniently applied to various scenes with limited space due to the small volume, can measure and control the displacement of tiny components, and meets the requirements of portable and miniaturized displacement sensors in the market. Meanwhile, the pull rope type displacement sensor optimizes the design and materials of a sensor interface, improves the universality and flexibility, compresses the manufacturing cost and has good practicability.
In addition, the pull rope type displacement sensor can be used for accurately measuring the sizes of mechanical parts in various shapes, so that the production efficiency is improved, and the production cost is reduced. In addition, in robotics and automatic production lines, the pull rope type displacement sensor can realize finer and various motion control, and improves the operation precision. In addition, the pull rope type displacement sensor can provide a multi-azimuth measurement solution for tiny components with various shapes, and has stronger flexibility.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (8)
1. A pull-cord type displacement sensor, comprising:
The device comprises a main body, wherein a first accommodating space is formed in the upper part of the main body, a second accommodating space is formed in the lower part of the main body, and the first accommodating space and the second accommodating space are arranged in a separated mode;
the main body comprises a first shell, a second shell and a third shell;
The first shell, the second shell and the third shell are detachably connected together, and the first shell and the second shell are enclosed to form the first accommodating space; the second shell and the third shell are enclosed to form the second accommodating space;
the rotating shaft extends from the first accommodating space to the second accommodating space and is rotationally connected with the main body;
The wire winding wheel is positioned in the first accommodating space, the first end of the wire harness is wound on the wire winding wheel, and the second end of the wire harness extends to the outside of the main body to fix the unit to be tested; the encoder magnet is fixed on the winding wheel; the acquisition unit is close to the encoder magnet and is used for acquiring the rotation angle of the encoder magnet;
The reset unit is positioned in the second accommodating space and is connected with the rotating shaft;
A positioning bead, wherein the first shell is provided with a wire groove, and the second end of the wire harness is laid along the inside of the wire groove; the positioning beads are arranged on the first shell and are matched with the wire slots to limit the wire harness;
The unit to be tested moves and pulls the wire harness to enable the wire winding wheel to rotate along a first direction, and the acquisition unit acquires the rotation angle of the encoder magnet to determine the displacement of the unit to be tested;
When the wire harness is free, the wire winding wheel rotates along a second direction under the action of the reset unit and drives the wire harness to be stored in the wire winding wheel; wherein the first direction is opposite to the second direction.
2. The pull-cord type displacement sensor of claim 1, further comprising a first bearing and a second bearing;
The first bearing is arranged on the first shell; one end of the rotating shaft is rotationally connected with the first shell through the first bearing;
The second bearing is arranged on the second shell; the middle part of the rotating shaft is rotationally connected with the second shell through the second bearing.
3. The pull-cord type displacement sensor of claim 2, further comprising a first pre-buried nut and bolt;
the first shell is provided with a first embedded nut, and the second shell and the third shell are respectively provided with a mounting hole corresponding to the first embedded nut;
The bolts sequentially penetrate through the mounting holes of the third shell, the mounting holes of the second shell and the first embedded nuts on the first shell to fix the first shell, the second shell and the third shell together.
4. The pull-cord type displacement sensor according to claim 3, further comprising an external port, said external port being located outside of said first housing, a second end of said wire harness being secured to said external port;
The external port is used for fixing the unit to be tested.
5. The pull-cord type displacement sensor of claim 4, further comprising a second pre-buried nut;
the second embedded nut is arranged on one side, far away from the wire harness, of the peripheral port, and can be connected with the unit to be tested through the second embedded nut.
6. The pull-cord type displacement sensor of claim 1, wherein the wire harness is a nylon wire harness.
7. The pull-cord type displacement sensor according to claim 2, wherein the reset unit includes a coil spring shaft and a coil spring, both of which are located in the second accommodation space;
The coil spring shaft is fixed on the rotating shaft, one end of the coil spring is clamped on the coil spring shaft, and the other end of the coil spring is fixed on the second shell.
8. The pull-cord type displacement sensor according to claim 1, wherein the first, second and third housings are all made of carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410368410.5A CN117968607B (en) | 2024-03-28 | Pull rope type displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410368410.5A CN117968607B (en) | 2024-03-28 | Pull rope type displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117968607A true CN117968607A (en) | 2024-05-03 |
| CN117968607B CN117968607B (en) | 2024-07-05 |
Family
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| CN115096192A (en) * | 2022-06-30 | 2022-09-23 | 王海军 | Wide-range optical fiber displacement sensor |
| CN218097669U (en) * | 2022-07-20 | 2022-12-20 | 广东三乾工业用品有限公司 | Stay cord type displacement sensor |
| CN220583307U (en) * | 2023-07-06 | 2024-03-12 | 深圳布瑞特科技有限公司 | Multi-turn absolute value stay wire displacement sensor |
| CN220418357U (en) * | 2023-08-03 | 2024-01-30 | 深圳布瑞特科技有限公司 | Active winding displacement sensor with multiple turns of absolute value stay wires |
| CN220418358U (en) * | 2023-08-03 | 2024-01-30 | 深圳布瑞特科技有限公司 | Miniature multi-turn absolute value stay wire displacement sensor |
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