CN109341636B - Self-resetting angular displacement sensor - Google Patents
Self-resetting angular displacement sensor Download PDFInfo
- Publication number
- CN109341636B CN109341636B CN201811096532.4A CN201811096532A CN109341636B CN 109341636 B CN109341636 B CN 109341636B CN 201811096532 A CN201811096532 A CN 201811096532A CN 109341636 B CN109341636 B CN 109341636B
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- Prior art keywords
- rotating shaft
- bracket
- shell
- displacement sensor
- angular displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 32
- 239000011324 bead Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a self-resetting angular displacement sensor. The self-resetting angular displacement sensor comprises a shell, wherein a stator group, a rotor group and a base are arranged in the shell; the stator group and the rotor group are sleeved on the rotating shaft of the rotor group; one end of the rotating shaft penetrates through the rotor group and extends to the outside of the shell, the other end of the rotating shaft is connected with a bracket, and the bracket is propped against the surface of a chute formed in the base through an elastic sliding device; the base is fixedly arranged in the shell; the chute adopts an arc-shaped groove; the rotor set, the bracket and the elastic sliding device synchronously rotate with the rotating shaft, and when the rotating shaft does not rotate, the elastic sliding device is propped against the lowest position of the chute. According to the self-resetting angular displacement sensor, when external force applied to the rotating shaft disappears, the angular displacement sensor can automatically return to a zero position.
Description
Technical Field
The present invention relates to an angular displacement sensor, and more particularly, to a self-resetting angular displacement sensor.
Background
When the external force causes the angular displacement to generate a certain angle in the use process, the rotating shaft of the existing angular displacement sensor is stagnant at a certain position and cannot automatically return to the zero position, so that the existing angular displacement sensor cannot be used under special conditions, and fine control of output is realized.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a self-resetting angular displacement sensor, which can automatically return to zero position when external force applied to a rotating shaft disappears.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the self-resetting angular displacement sensor comprises a shell, wherein a stator group, a rotor group and a base are arranged in the shell; the stator group and the rotor group are sleeved on the rotating shaft of the rotor group, and the stator group is sleeved on the rotor group and is in clearance fit with the rotor group; the stator group and the rotor group are fixed in the shell through a pressing device; one end of the rotating shaft penetrates through the rotor set and extends to the outside of the shell, the other end of the rotating shaft is connected with a bracket, the bracket is positioned at the bottoms of the stator set and the rotor set, and the bracket is propped against the surface of a chute formed in the base through an elastic sliding device; the base is fixedly arranged in the shell; the chute adopts an arc-shaped groove; the rotor set, the bracket and the elastic sliding device synchronously rotate with the rotating shaft, and when the rotating shaft does not rotate, the elastic sliding device is propped against the lowest position of the chute.
Further, guide cylinders are fixedly connected to two sides of the bottom of the bracket respectively, the elastic sliding device is assembled in the guide cylinders, the sliding part of the elastic sliding device abuts against the surface of a sliding groove formed in the base, and the elastic sliding device synchronously rotates on the sliding groove along with the rotation of the rotating shaft.
Further, the elastic sliding device comprises a sliding part and an elastic piece; the sliding part comprises a collision bead and a guide rod fixedly connected with the collision bead; one end of the elastic piece is sleeved on the guide rod, and the other end of the elastic piece is propped against the top of the guide cylinder; when the rotating shaft does not rotate, the ball is abutted against the lowest position of the chute.
Further, the cross section of the chute adopts an arc V-shaped groove structure.
Further, the other end of the rotating shaft is connected with the bracket through a key slot.
Further, the rotor set is rigidly connected to the shaft.
Further, the base is fixedly arranged in the shell through the bottom cover, the bottom of the base is embedded in the bottom cover, and the bottom cover is in threaded connection with the bottom of the shell.
Further, the compressing device is located between the rotor set and the bracket, the compressing device comprises a gland and a compression ring, the gland is assembled at one end, close to the bracket, of the stator set and the rotor set, and the compression ring is assembled at one end, close to the bracket, of the gland and is in threaded connection with the shell.
Further, the rotating shaft is respectively connected with the top of the shell and the pressing device through bearings.
The beneficial effects are that: compared with the prior art, the self-resetting angular displacement sensor fixes the base inside the shell through the elastic sliding device at the bottom of the bracket and the sliding groove on the base, the bracket is propped against the surface of the sliding groove formed in the base through the elastic sliding device, the rotor set, the bracket and the elastic sliding device are all synchronously rotated with the rotating shaft, when the rotating shaft does not rotate, the elastic sliding device is propped against the lowest position of the sliding groove, at the moment, the elastic sliding device is at the minimum compression position, namely, the initial zero position of the self-resetting angular displacement sensor, when the rotating shaft rotates under the action of external force, the bracket and the elastic sliding device synchronously rotate along with the rotating shaft, the elastic sliding device is propped against the sliding groove due to the existence of the sliding groove, the rotation of the elastic sliding device is limited, at the moment, the elastic sliding device slides towards the top of the sliding groove due to the compression of the elastic sliding device, the elastic sliding device vertically moves relative to the bracket, and generates an attack force due to the compression of the elastic sliding device, and when the rotating shaft is forced to rotate without external force, the elastic sliding device returns to the initial zero position along the sliding groove under the action of the force, so that the automatic resetting of the angular displacement sensor is realized.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a self-resetting angular displacement sensor according to an embodiment of the present invention;
FIG. 2 is an exploded view of a self-resetting angular displacement sensor according to an embodiment of the present invention;
FIG. 3 is a perspective view of an elastic sliding device according to an embodiment of the present invention;
fig. 4 is an assembly diagram of an elastic sliding device and a base according to an embodiment of the invention.
In the figure: 1-shell, 2-stator group, 3-bearing, 4-rotor group, 5-gland, 6-clamping ring, 7-bracket, 8-elastic sliding device, 9-base, 10-bottom, 11-chute, 12-sliding part, 13-elastic piece, 14-rotating shaft, 15-guide cylinder, 16-spring bead, 17-guide rod.
Detailed Description
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The invention is further illustrated in the following figures and examples.
Examples
Referring to fig. 1 and 2, a self-resetting angular displacement sensor comprises a housing 1, wherein a stator group 2, a rotor group 4 and a base 9 are arranged in the housing 1; the stator group 2 and the rotor group 4 are sleeved on a rotating shaft 14 of the rotor group 4, and the stator group 2 is sleeved on the rotor group 4 and is in clearance fit with the rotor group 4; the stator group 2 and the rotor group 4 are fixed inside the shell 1 through a pressing device; one end of the rotating shaft 14 penetrates through the rotor set 4 to extend to the outside of the shell 1, the other end of the rotating shaft 14 is connected with a bracket 7, the bracket 7 is positioned at the bottoms of the stator set 2 and the rotor set 4, and the bracket 7 is propped against the surface of a chute 11 formed on the base 9 through an elastic sliding device 8; the base 9 is fixedly arranged in the shell 1; the chute 11 adopts an arc-shaped groove; when the rotating shaft 14 does not rotate, the elastic sliding device 8 abuts against the lowest position of the sliding groove 11, at the moment, the elastic sliding device is at the minimum compression position, namely the initial zero position of the angular displacement sensor, because the rotor set 4, the bracket 7 and the elastic sliding device 8 rotate synchronously with the rotating shaft 14, when the rotating shaft 14 rotates under the action of external force, the bracket 7 and the elastic sliding device 8 synchronously rotate along with the rotating shaft 14, due to the existence of the sliding groove 11, the elastic sliding device 8 abuts against the sliding groove 11, further rotation of the elastic sliding device 8 is limited, at the moment, the elastic sliding device 8 is compressed, the elastic sliding device 8 slides towards the top of the sliding groove 11 on the sliding groove 11, at the moment, the elastic sliding device 8 moves vertically relative to the bracket 7, an initial force is generated due to the compression of the elastic sliding device 8, and when the rotating shaft 14 does not rotate under the action of external force, the elastic sliding device 8 returns to the initial zero position along the sliding groove 11 under the action of reactive force, and automatic resetting of the angular displacement sensor is realized.
The stator set 2 in this embodiment is a stack of soft magnetic alloy containing coils, and the rotor set 4 includes a rotating shaft 14 and rotor sheets of sheet soft magnetic alloy material pressed onto the rotating shaft 14. When the angular displacement sensor is used, the rotating shaft 14 rotates under the action of external force, so that the rotor set 4 is driven to rotate, and as the stator set 2 and the rotor set 4 are in clearance fit, the magnetic field flux changes to generate signal output when the angle rotates through magnetic field coupling.
Further, referring to fig. 1 and 2, two sides of the bottom of the bracket 7 are fixedly connected with guide cylinders 15, the elastic sliding device 8 is assembled in the guide cylinders 15, the sliding portion of the elastic sliding device 8 abuts against the surface of the sliding groove 11 formed on the base 9, and the elastic sliding device 8 synchronously rotates on the sliding groove 11 along with the rotation of the rotating shaft 14.
The guide cylinder 15 is fixed to both sides of the bottom of the bracket 7 by welding, key groove connection, engagement, or any other connection method, and the non-sliding portion of the elastic sliding device 8 is embedded in the guide cylinder 15, and is coated with grease at one end, so as to rotate synchronously with the bracket 7.
Further, referring to fig. 3 and 4, the elastic sliding device 8 includes a sliding portion 12 and an elastic member 13; the sliding part 12 comprises a collision bead 16 and a guide rod 17 fixedly connected with the collision bead 16; one end of the elastic piece 13 is sleeved on the guide rod 17, one end of the elastic piece is limited through the collision bead 16, and the other end of the elastic piece is propped against the top of the guide cylinder 15; when the rotating shaft 14 does not rotate, the collision bead 16 is propped against the lowest position of the chute 11, namely the initial zero position.
It should be noted that the elastic member 13 in this embodiment includes a spring or other elastic member capable of generating a set variable. When the bracket 7 rotates, the base 9 is fixed in the shell 1, so that the base 9 does not rotate, the collision beads 16 slide on the contact surface of the sliding groove 11, and the collision beads 16 do vertical movement relative to the bracket 7. The spring element 16 is connected to the bottom of the bracket, when the rotating shaft 14 rotates under the action of external force, the bracket 7 rotates synchronously with the spring element, the spring element 16 rotates along with the bracket, the spring element 16 is propped against the sliding groove 11 due to the existence of the sliding groove 11, the rotation of the spring element 16 is limited, the spring element 13 is compressed, the spring element 16 slides to the top of the sliding groove 11 on the sliding groove 11 and moves vertically relative to the bracket 7, at the moment, the spring element 13 is compressed to generate a reaction force, when the rotating shaft 14 does not have external force to force the spring element 13 to rotate, the spring element 16 slides along the sliding groove 11 on the base 9 under the reaction force of the spring element 13, and returns to the initial zero position, namely the lowest position of the sliding groove 11, so that the automatic resetting of the angular displacement sensor is realized.
Further, referring to fig. 1, fig. 2 and fig. 4, the cross section of the chute 11 adopts an arc V-shaped groove structure, so that the compression amount of the elastic member 13 is larger when the rotating shaft 14 rotates, and the automatic resetting of the angular displacement sensor is facilitated.
Further, referring to fig. 1 and 2, the other end of the rotating shaft 14 is connected with the bracket 7 through a key slot, the specific bracket 7 is provided with a key slot, and the other end of the rotating shaft 14 penetrates through the key slot of the bracket 7 and is in interference fit with the bracket 7, so that synchronous rotation of the bracket 7 and the rotating shaft 14 is realized.
Further, referring to fig. 1, the rotor set 4 is rigidly connected to the rotating shaft 14 by crimping the rotor set 4 onto the rotating shaft 14 such that the rotor set 4 rotates synchronously with the rotating shaft 14.
Further, referring to fig. 1, the base 9 is fixedly installed inside the housing 1 through the bottom cover 10, the bottom of the base 9 is embedded in the bottom cover 10, and the bottom cover 10 is in threaded connection with the bottom of the housing 1, so that the bottom cover 10 and the base 9 are convenient to detach and replace.
Further, referring to fig. 1 and 2, the compressing device is located between the rotor set 4 and the bracket 7, the other end of the rotating shaft 14 penetrates through the compressing device, the compressing device comprises a gland 5 and a compression ring 6, the gland 5 is assembled on one end, close to the bracket 7, of the stator set 2 and the rotor set 4, the compression ring 6 is assembled on one end, close to the bracket 7, of the gland 5 and is in threaded connection with the shell 1, and the rotor set 4 and the stator set 2 are convenient to detach and replace.
Further, referring to fig. 1 and 2, the rotating shaft 14 is respectively connected with the top of the housing 1 and the compressing device through the bearing 3, the bearing 3 is respectively installed at the connection part of the rotating shaft 14 and the top of the housing 1 and the compressing device, and the transmission is smoother through the bearing 3.
When the external force applied to the rotating shaft disappears, the self-resetting angular displacement sensor can automatically return to the zero position, can be used under special conditions, and can realize fine control of output.
The foregoing is a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention and are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A self-resetting angular displacement sensor, characterized by: the motor comprises a shell (1), wherein a stator group (2), a rotor group (4) and a base (9) are arranged in the shell (1); the stator group (2) and the rotor group (4) are sleeved on a rotating shaft (14) of the rotor group (4), and the stator group (2) is sleeved on the rotor group (4) and is in clearance fit with the rotor group (4); the stator group (2) and the rotor group (4) are fixed in the shell (1) through a pressing device; one end of the rotating shaft (14) penetrates through the rotor set (4) to extend to the outside of the shell (1), the other end of the rotating shaft (14) is connected with a bracket (7), the bracket (7) is positioned at the bottoms of the stator set (2) and the rotor set (4), and the bracket (7) is propped against the surface of a chute (11) formed in the base (9) through an elastic sliding device (8); the base (9) is fixedly arranged in the shell (1); the chute (11) adopts an arc-shaped groove; the rotor set (4), the bracket (7) and the elastic sliding device (8) are synchronously rotated with the rotating shaft (14), and when the rotating shaft (14) does not rotate, the elastic sliding device (8) is propped against the lowest position of the chute (11);
guide cylinders (15) are fixedly connected to two sides of the bottom of the bracket (7) respectively, the elastic sliding device (8) is assembled in the guide cylinders (15), the sliding part of the elastic sliding device (8) abuts against the surface of a sliding groove (11) formed in the base (9), and the elastic sliding device (8) synchronously rotates on the sliding groove (11) along with the rotation of the rotating shaft (14);
the elastic sliding device (8) comprises a sliding part (12) and an elastic piece (13); the sliding part (12) comprises a collision bead (16) and a guide rod (17) fixedly connected with the collision bead (16); one end of the elastic piece (13) is sleeved on the guide rod (17), and the other end of the elastic piece is propped against the top of the guide cylinder (15); when the rotating shaft (14) does not rotate, the collision bead (16) is propped against the lowest position of the chute (11).
2. A self-resetting angular displacement sensor as claimed in claim 1, wherein: the cross section of the chute (11) adopts an arc V-shaped groove structure.
3. A self-resetting angular displacement sensor as claimed in claim 1, wherein: the other end of the rotating shaft (14) is connected with the bracket (7) through a key slot.
4. A self-resetting angular displacement sensor as claimed in claim 1, wherein: the rotor group (4) is rigidly connected with the rotating shaft (14).
5. A self-resetting angular displacement sensor as claimed in claim 1, wherein: the base (9) is fixedly arranged in the shell (1) through a bottom cover (10), the bottom of the base (9) is embedded in the bottom cover (10), and the bottom cover (10) is in threaded connection with the bottom of the shell (1).
6. A self-resetting angular displacement sensor as claimed in claim 1, wherein: the compressing device is located between the rotor set (4) and the bracket (7), the compressing device comprises a gland (5) and a compression ring (6), the gland (5) is assembled on the stator set (2) and the rotor set (4) at one end close to the bracket (7), and the compression ring (6) is assembled on the gland (5) at one end close to the bracket (7) and is in threaded connection with the shell (1).
7. A self-resetting angular displacement sensor as claimed in claim 1 or 6, wherein: the rotating shaft (14) is respectively connected with the top of the shell (1) and the pressing device through the bearing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096532.4A CN109341636B (en) | 2018-09-19 | 2018-09-19 | Self-resetting angular displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096532.4A CN109341636B (en) | 2018-09-19 | 2018-09-19 | Self-resetting angular displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109341636A CN109341636A (en) | 2019-02-15 |
| CN109341636B true CN109341636B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811096532.4A Active CN109341636B (en) | 2018-09-19 | 2018-09-19 | Self-resetting angular displacement sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109341636B (en) |
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| DE4431453A1 (en) * | 1994-09-03 | 1996-03-07 | Bosch Gmbh Robert | Angle of rotation encoder |
| US6252394B1 (en) * | 1997-12-12 | 2001-06-26 | L'electricfil Industrie | Rotary movement sensor equipped with means of assembly with a drive shaft designed to minimize the effects of a misalignment in the connection |
| WO2005077733A1 (en) * | 2004-02-14 | 2005-08-25 | Trw Fahrwerksysteme Gmbh & Co Kg | Device for measuring angles of rotation and/or torques |
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| CN106152926A (en) * | 2016-08-29 | 2016-11-23 | 西安旭彤电子科技股份有限公司 | A kind of displacement transducer |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060220638A1 (en) * | 2005-03-31 | 2006-10-05 | Urquidi Carlos A | Angular position sensor |
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2018
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| CN109341636A (en) | 2019-02-15 |
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