CN217442490U

CN217442490U - Double-brush plastic-guide angular displacement sensor

Info

Publication number: CN217442490U
Application number: CN202221632912.7U
Authority: CN
Inventors: 胡驶宇
Original assignee: Ningbo Beilun Machine Electrics Co ltd
Current assignee: Ningbo Beilun Machine Electrics Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-16
Anticipated expiration: 2032-06-27

Abstract

The utility model provides a two brushes lead and mould angular displacement sensor, include: casing and pivot, be equipped with conductive plastic sensing mechanism in the casing, conductive plastic sensing mechanism includes first conductive plastic base member, second conductive plastic base member, first brush and second brush, first brush reaches the second brush all with pivot fixed connection, first brush with the second brush passes through the conductive connecting piece and connects, first brush sets up first conductive plastic base member one side, the second brush sets up second conductive plastic base member one side, first conductive plastic base member is the annular breakpoint-free base member. The utility model discloses two electric brush lead moulds angular displacement sensor, two conductive plastic substrate cooperation double brush about adopting measure, save parts such as collector ring, current collection silk, reduction in production cost avoids contact failure, and signal output is reliable and more stable, long service life.

Description

Double-brush plastic-guide angular displacement sensor

Technical Field

The utility model relates to a sensor technical field, in particular to angle displacement sensor is moulded to two brush leads.

Background

At present, the function of a displacement sensor is to convert linear or circular mechanical displacement into an electrical signal, by positioning a variable plastic-conductive resistor slide rail at a fixed position of the sensor, different resistance values are measured by the displacement of a brush piece on the slide rail, and the voltage between the brush piece and the beginning of the sensor is proportional to the moving angle of the brush piece. The conductive plastic angular displacement sensor can provide high-precision output signals through the uniform rotation of the electric brush, and has stable and reliable performance and longer service life.

In some prior art plastic guided angular displacement sensors, the brushes are fixedly mounted on a brush arm assembly. The brush arm assembly comprises parts such as a current collecting wire, a current collecting ring and the like, and is complex in structure, so that the problems of poor contact and poor measurement stability among the parts are easily caused, and the measurement accuracy is further influenced; and parts such as the current collecting wire, the current collecting ring and the like are made of materials such as copper, alloy and the like, so that the production cost is higher.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that a long service life's two electric brushes lead and mould angular displacement sensor is provided, save parts such as collector ring, current collection silk, reduction in production cost avoids contact failure, and signal output is reliable and more stable.

(II) technical scheme

For solving the technical problem, the utility model provides a two brushes lead and mould angular displacement sensor, include: casing and pivot, be equipped with conductive plastic sensing mechanism in the casing, conductive plastic sensing mechanism includes first conductive plastic base member, second conductive plastic base member, first brush and second brush, first brush reaches the second brush all with pivot fixed connection, first brush with the second brush passes through the conductive connecting piece and connects, first brush sets up first conductive plastic base member one side, the second brush sets up second conductive plastic base member one side, first conductive plastic base member is the annular no breakpoint base member, the annular no breakpoint base member is equipped with the low resistance conduction region of annular no breakpoint. When the device is used for measurement, the rotating shaft drives the rotating shaft to rotate through an external power device, the rotating shaft drives the second electric brush to slide on the surface of the second conductive plastic base body at a constant speed, the part of linearly-changed high-precision signal is transmitted to the first conductive plastic base body through the first electric brush, and finally the signal is output through the signal output end.

The utility model discloses double brush leads and moulds angular displacement sensor, the cover is equipped with the gasket in the pivot, and the gasket is arranged in first high-speed ball bearing one side, can adjust the axial clearance of product through the thickness that increases or reduces the gasket, prevents that the pivot from drunkenness from going up and down to make the brush operate steadily and smoothly, increase the smoothness, the degree of accuracy of signal output; the upper conductive plastic substrate and the lower conductive plastic substrate are matched with the double electric brushes for measurement, so that parts such as a collector ring, a collector wire and the like are omitted, the production cost is reduced, poor contact is avoided, the signal output is more stable and reliable, and the service life is long; the electric brush arm is fixedly sleeved on the rotating shaft, the conductive connecting piece is fixedly connected with the electric brush arm, and the electric brush arm is an injection molding piece, so that an electric brush part is insulated from the rotating shaft, abnormal conditions such as short circuit and the like can not occur, and the use is more reliable; be equipped with first high-speed ball bearing and second high-speed ball bearing between pivot and the casing, play the effect of supporting pivot, brush arm, reduce the frictional force in the pivot motion process to guarantee its gyration precision, thereby promote measurement accuracy.

Furthermore, the first conductive plastic base body is correspondingly arranged above the second conductive plastic base body, and the first electric brush and the second electric brush are arranged between the first conductive plastic base body and the second conductive plastic base body. First brush sets up, and the second brush sets up down, structural design is reasonable.

Furthermore, the shell is provided with a signal output end electrically connected with the first conductive plastic base body, so that an angular displacement signal can be conveniently output.

Further, the fixed cover is equipped with the brush arm in the pivot, conductive connecting piece with brush arm fixed connection, the brush arm is the injection molding, and the brush part is insulating with the pivot, can not take place abnormal conditions such as short circuit, uses more reliably.

Further, casing one side is equipped with power positive pole link and power negative pole link, pivot one end is equipped with the recess of a straight line, the casing is equipped with servo mounting groove and location mounting hole, can select an mounting means to fix the product according to the demand, simple to operate, application range is wide. The groove is used for adjusting the initial zero position of the rotating shaft, and the adjustment is more convenient.

Further, the shell comprises an upper shell and a lower shell, the first conductive plastic substrate is fixedly mounted on the upper shell, and the second conductive plastic substrate is fixedly mounted on the lower shell.

Furthermore, the rotating shaft and the shell are provided with a first high-speed ball bearing and a second high-speed ball bearing, so that the rotating shaft and the electric brush arm are supported, the friction force in the moving process of the rotating shaft is reduced, the rotation precision of the rotating shaft is ensured, and the measurement precision is improved.

Furthermore, a gasket is sleeved on the rotating shaft and is arranged on one side of the first high-speed ball bearing; the axial clearance of product is adjusted to the thickness of accessible increase or reduction gasket, prevents the pivot drunkenness from top to bottom to make the brush operate steadily smooth and easy, increase signal output's stationarity, degree of accuracy.

Further, the spraying has low resistance silver thick liquid in the low resistance conductive area, first conductive plastic base member be equipped with low resistance conductive area electric connection's first pin, first pin with signal output part electric connection.

Furthermore, the second conductive plastic substrate is provided with a second pin and a third pin which are used for connecting a power supply, the second pin is electrically connected with the positive connecting end of the power supply, and the third pin is electrically connected with the negative connecting end of the power supply. The second pin is connected with the third pin through the resistance paste, and the second conductive plastic substrate is a conventional conductive plastic substrate in the prior art and is not described herein again.

(III) advantageous effects

The utility model discloses two electric brush lead mould angular displacement sensor, adopt two upper and lower conductive plastic base members to cooperate the double electric brush to measure, save parts such as collector ring, current collecting wire, reduction in production cost avoids contact failure, and signal output is more reliable and more stable, long service life; the electric brush arm is fixedly sleeved on the rotating shaft, the conductive connecting piece is fixedly connected with the electric brush arm, and the electric brush arm is an injection molding piece, so that an electric brush part is insulated from the rotating shaft, abnormal conditions such as short circuit and the like can not occur, and the use is more reliable; a first high-speed ball bearing and a second high-speed ball bearing are arranged between the rotating shaft and the shell, so that the rotating shaft and the electric brush arm are supported, the friction force of the rotating shaft in the moving process is reduced, the rotation precision of the rotating shaft is ensured, and the measurement precision is improved; the rotating shaft is sleeved with a gasket, and the gasket is arranged on one side of the first high-speed ball bearing; the axial clearance of product is adjusted to the thickness of accessible increase or reduction gasket, prevents the play from top to bottom of pivot to make the brush operate steadily smooth and easy, increase signal output's stationarity, degree of accuracy.

Drawings

FIG. 1 is a top view of the dual-brush plastic-guide angular displacement sensor of the present invention;

FIG. 2 is a cross-sectional view of the dual-brush plastic-guide angular displacement sensor of the present invention;

FIG. 3 is a schematic structural view of a first conductive plastic substrate of the dual-brush plastic-conductive angular displacement sensor of the present invention;

FIG. 4 is a schematic structural view of a second conductive plastic substrate of the dual-brush plastic-conductive angular displacement sensor of the present invention;

the corresponding part names for the various reference numbers in the figures are: the structure comprises a shell 1, a servo mounting groove 101, a positioning mounting hole 102, an upper shell 103, a lower shell 104, a rotating shaft 2, a groove 201, a first conductive plastic substrate 3, a first pin 301, a second conductive plastic substrate 4, a second pin 401, a third pin 402, a first brush 5, a second brush 6, a low-resistance conductive area 7, a conductive connecting piece 8, a signal output end 9, a brush arm 10, a power supply positive connecting end 11, a power supply negative connecting end 12, a first high-speed ball bearing 13, a second high-speed ball bearing 14, resistance paste 15 and a gasket 16.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-4, the utility model provides a double-brush plastic-guide angular displacement sensor, include: casing 1 and pivot 2, be equipped with conductive plastic sensing mechanism in the casing 1, conductive plastic sensing mechanism includes first conductive plastic base member 3, second conductive plastic base member 4, first brush 5 and second brush 6 all with pivot 2 fixed connection, first brush 5 and second brush 6 pass through conductive connecting piece 8 and connect, first brush 5 sets up in first conductive plastic base member 3 one side, second brush 6 sets up in second conductive plastic base member 4 one side, first conductive plastic base member 3 is the annular breakpoint-free base member, the annular breakpoint-free base member is equipped with the low resistance conduction region 7 of annular breakpoint-free. During measurement, the rotating shaft drives the rotating shaft to rotate through an external power device, the rotating shaft drives the second electric brush to slide on the surface of the second conductive plastic base body at a constant speed, the part of linearly-changed high-precision signal is transmitted to the first conductive plastic base body 3 through the first electric brush, and finally the signal is output through the signal output end. The first brush 5 and the second brush 6 are both six-membered alloy brushes. The two conductive plastic substrates are bonded inside the shell by high-strength and high-temperature-resistant glue, and can provide high-precision output signals through the uniform-speed rotation of the surface of the electric brush, so that the electric brush is stable and reliable in performance and long in service life. The shell 1 and the rotating shaft 2 are both revolving body workpieces.

Referring to fig. 2, the first conductive plastic substrate 3 is correspondingly disposed above the second conductive plastic substrate 4, and the first brush 5 and the second brush 6 are disposed between the first conductive plastic substrate 3 and the second conductive plastic substrate 4. First brush 5 sets up upwards, and the second brush sets up downwards, and structural design is reasonable.

Referring to fig. 1 to 3, the housing 1 is provided with a signal output terminal 9 electrically connected to the first conductive plastic substrate 3 for outputting an angular displacement signal. The low-resistance conductive area 7 is coated with low-resistance silver paste, the first conductive plastic substrate 3 is provided with a first pin 301 electrically connected with the low-resistance conductive area 7, and the first pin 301 is electrically connected with the signal output end 9. The second conductive plastic substrate 4 plays a role of a conductive ring for transmitting signals, has low production cost and more reliable use, and is not easy to cause the problems of short circuit and poor contact.

Referring to fig. 2, the rotating shaft 2 is fixedly sleeved with the brush arm 10, the conductive connecting piece 8 is fixedly connected with the brush arm 10, the brush arm 10 is an injection molding piece, the brush part is insulated from the rotating shaft, abnormal conditions such as short circuit and the like cannot occur, and the use is more reliable. The electric brush arm is bonded with the rotating shaft through high-strength and high-temperature-resistant glue, and the electric brush arm injection molding piece is made of PA66 plastic.

Referring to fig. 1, 2 and 4, one side of the casing 1 is provided with a power supply positive connection end 11 and a power supply negative connection end 12, one end of the rotating shaft 2 is provided with a linear groove 201, the casing 1 is provided with a servo mounting groove 101 and a positioning mounting hole 102, a product can be fixed by selecting a mounting mode according to requirements, and the casing is convenient to mount and wide in application range. The groove 201 is used for adjusting the initial zero position of the rotating shaft 2, and the adjustment is more convenient. Referring to fig. 1, the second conductive plastic substrate 4 is provided with a second pin 401 and a third pin 402 for connecting a power supply, the second pin 401 is electrically connected to the positive power connection terminal 11, and the third pin 402 is electrically connected to the negative power connection terminal 12. The second lead 401 is connected to the third lead 402 through the resistor paste 15, and the second conductive plastic substrate 4 is a conventional conductive plastic substrate in the prior art, which is not described herein again.

Referring to fig. 1 and 2, the housing 1 includes an upper housing 103 and a lower housing 104, and the first conductive plastic base 3 is fixedly mounted on the upper housing 103, and the second conductive plastic base 4 is fixedly mounted on the lower housing 104. Be equipped with first high-speed ball bearing 13 and second high-speed ball bearing 14 between pivot 2 and the casing 1, play the effect of supporting pivot, brush arm, reduce the frictional force in the pivot motion process to guarantee its gyration precision, thereby promote measurement accuracy. A gasket 16 is sleeved on the rotating shaft 2, and the gasket 16 is arranged on one side of the first high-speed ball bearing 13; the axial clearance of product is adjusted to the thickness of accessible increase or reduction gasket, prevents the pivot drunkenness from top to bottom to make the brush operate steadily smooth and easy, increase signal output's stationarity, degree of accuracy.

The utility model discloses two electric brush lead mould angular displacement sensor is equipped with first high speed ball bearing and second high speed ball bearing between pivot and the casing, plays the effect of supporting pivot, brush arm, reduces the frictional force in the pivot motion process to guarantee its gyration precision, thereby promote measurement accuracy; the rotating shaft is sleeved with a gasket, the gasket is arranged on one side of the first high-speed ball bearing, the axial clearance of a product can be adjusted by increasing or decreasing the thickness of the gasket, and the rotating shaft is prevented from moving up and down, so that the electric brush runs stably and smoothly, and the stability and the accuracy of signal output are improved; the upper conductive plastic substrate and the lower conductive plastic substrate are matched with the double electric brushes for measurement, so that parts such as a collector ring, a collector wire and the like are omitted, the production cost is reduced, poor contact is avoided, the signal output is more stable and reliable, and the service life is long; the fixed cover is equipped with the brush arm in the pivot, and conductive connection spare and brush arm fixed connection, brush arm are the injection molding for brush part and pivot are insulating, abnormal conditions such as short circuit can not take place, use more reliably.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A dual brush plastic guided angular displacement sensor comprising: a shell (1) and a rotating shaft (2), and is characterized in that a conductive plastic sensing mechanism is arranged in the shell (1), the conductive plastic sensing mechanism comprises a first conductive plastic base body (3), a second conductive plastic base body (4), a first electric brush (5) and a second electric brush (6), the first electric brush (5) and the second electric brush (6) are both fixedly connected with the rotating shaft (2), the first brush (5) and the second brush (6) are connected by a conductive connection (8), the first brush (5) is arranged on one side of the first conductive plastic base body (3), the second brush (6) is arranged on one side of the second conductive plastic base body (4), the first conductive plastic substrate (3) is an annular breakpoint-free substrate, and an annular breakpoint-free low-resistance conductive region (7) is arranged on the annular breakpoint-free substrate.

2. The dual brush plastic angular displacement sensor of claim 1, wherein the first conductive plastic base (3) is correspondingly disposed above the second conductive plastic base (4), the first brush (5) and the second brush (6) being disposed between the first conductive plastic base (3) and the second conductive plastic base (4).

3. The double-brush plastic-guide angular displacement sensor according to claim 1, wherein said housing (1) is provided with a signal output terminal (9) electrically connected to said first conductive plastic substrate (3).

4. The double-brush plastic-guide angular displacement sensor according to claim 1, wherein a brush arm (10) is fixedly sleeved on the rotating shaft (2), the conductive connecting piece (8) is fixedly connected with the brush arm (10), and the brush arm (10) is an injection molding piece.

5. The double-brush plastic-guide angular displacement sensor according to claim 1, wherein one side of the housing (1) is provided with a power supply positive electrode connecting end (11) and a power supply negative electrode connecting end (12), one end of the rotating shaft (2) is provided with a linear groove (201), and the housing (1) is provided with a servo mounting groove (101) and a positioning mounting hole (102).

6. A dual brush plastic guided angular displacement sensor according to claim 1, wherein the housing (1) comprises an upper housing (103) and a lower housing (104), the first conductive plastic substrate (3) being fixedly mounted on the upper housing (103), the second conductive plastic substrate (4) being fixedly mounted on the lower housing (104).

7. A double-brush plastic-guided angular displacement sensor according to claim 1, wherein a first high-speed ball bearing (13) and a second high-speed ball bearing (14) are provided between the shaft (2) and the housing (1).

8. The double-brush plastic-guide angular displacement sensor according to claim 7, wherein a spacer (16) is sleeved on the rotating shaft (2), and the spacer (16) is disposed on one side of the first high-speed ball bearing (13).

9. A dual-brush plastic-conducting angular displacement sensor according to claim 3, wherein the low-resistance conductive area (7) is coated with a low-resistance silver paste, the first conductive plastic substrate (3) is provided with a first pin (301) electrically connected to the low-resistance conductive area (7), and the first pin (301) is electrically connected to the signal output terminal (9).

10. The dual-brush plastic-guided angular displacement sensor according to claim 5, wherein said second conductive plastic base (4) is provided with a second pin (401) and a third pin (402) for connecting to a power supply, said second pin (401) being electrically connected to said positive power supply connection terminal (11), said third pin (402) being electrically connected to said negative power supply connection terminal (12).