CN217789507U

CN217789507U - Planar coil induction type encoder

Info

Publication number: CN217789507U
Application number: CN202221412052.6U
Authority: CN
Inventors: 刘伟; 陈权
Original assignee: Zhejiang Ruiying Sensing Technology Co ltd
Current assignee: Zhejiang Ruiying Sensing Technology Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-11
Anticipated expiration: 2032-06-02

Abstract

The utility model belongs to the technical field of the encoder and specifically relates to a planar coil induction type encoder is related to, include the rotor of being connected with the pivot that awaits measuring, solve the signal of converting into the digital signal of the pivot turned angle that awaits measuring of reaction and solve the board, signal is solved board one side and is equipped with the coil board, the array through wires hole has been seted up on the coil board, around establishing a turn coil in every group through wires hole, possess and need not use via hole technology to set up a plurality of blind holes on the coil layer on the PCB board, reduce lead time and cost, promote the effect of yields.

Description

Planar coil induction type encoder

Technical Field

The present application relates to the field of encoders, and more particularly, to a planar coil inductive encoder.

Background

The utility model provides an inductive encoder, including a rotor, a PCB board, a rotor, an eddy current displacement sensor, the rotor is connected with the pivot that awaits measuring, when the pivot that awaits measuring rotates, the PCB board keeps static, the coil circular telegram produces the magnetic field of inducting, rotor and PCB board constitution eddy current displacement sensor, in order to rotate the mechanical position signal conversion that produces with the rotor and be the signal of telecommunication in the coil, the circuit of resolving of the one side department that rethread PCB deviates from the coil is resolved the signal of telecommunication and is obtained digital signal, in order to obtain the actual turned angle of the pivot that awaits measuring.

The conventional induction type encoder can set a coil into a plurality of turns and layers in order to improve detection precision, namely, the coils need to be set into the layers by using a via hole process on one side of a PCB, and in order to not influence a resolving circuit on one side of the coils on the back of the PCB, open blind holes are used for connection among the coils of the plurality of layers on the PCB.

Aiming at the related technologies, the multilayer blind hole forming technology of the PCB has higher precision requirement, high-precision laser drilling is needed, more time is consumed for accurate splicing positioning and pressing, and the defects of long product delivery time, high cost and low yield exist.

SUMMERY OF THE UTILITY MODEL

In order to reduce product delivery time and cost, improve the yields, this application provides a planar coil induction type encoder.

The application provides a planar coil induction type encoder adopts following technical scheme:

the utility model provides a plane coil induction type encoder, includes the rotor of being connected with the pivot that awaits measuring, resolves the signal of converting into the digital signal of the pivot turned angle that awaits measuring of reaction and resolves the board, signal is resolved board one side and is equipped with the coil panel, has seted up array through wires hole on the coil panel, winds in every group through wires hole and establishes a circle coil.

Through adopting the above-mentioned technical scheme, need not open the blind hole like traditional adoption via hole technology and carry out the multilayer and set up the coil on the PCB board, the system board technology of signal resolving board has been simplified, only need penetrate the coil in the array through wires hole of a coil board and wind and establish can, reduce product lead time and cost, promote the yields, and it is minimum to resolving the size influence of board to the signal, it is compacter and convenient relatively other loose line connection or special-shaped circuit board implementation mode, the cavity type product application of being convenient for, in addition different signal resolving board more convenient adaptation in different coil boards, make resolving circuit on the signal resolving board and coil on the coil board can carry out more free design combination.

Optionally, each group of the threading holes is divided into two circles, a plurality of threading holes are uniformly distributed in each circle around the rotating axis of the rotating shaft to be detected, the two circles of threading holes in the same group are staggered, and the diameters of the circumferences of the two circles of threading holes in the same group are different.

By adopting the technical scheme, the cross sectional area of the coil is enlarged, so that the strength of an induced magnetic field generated by the coil is improved to a certain extent.

Optionally, two circles of the threading holes in the same group are respectively provided with a circle with a large diameter as an outer circle hole, two circles of the threading holes in the same group are respectively provided with a circle with a small diameter as an inner circle hole, the diameters of the outer circles corresponding to the threading holes in different groups on the respective circumferences are consistent, and the diameters of the inner circles corresponding to the threading holes in different groups on the respective circumferences are consistent.

By adopting the technical scheme, the coils of different groups can be integrated in a smaller space on the coil plate, so that more turns of coils can be arranged, and the strength of an induced magnetic field generated by the coils can be improved.

Optionally, a plurality of bonding pads fixedly connected to the signal resolving board for fixing the position of the coil board are arranged on the periphery of the coil board.

By adopting the technical scheme, the welding pad and the coil plate can be fixed by soldering.

Optionally, a plurality of copper-clad holes are formed in the periphery of the coil plate, and each bonding pad is correspondingly and fixedly connected to one copper-clad hole.

Through adopting above-mentioned technical scheme for the deviation is difficult for appearing in the welding position between coil plate and the pad, makes the coil plate be difficult for removing at will during the welding, helps promoting welding quality.

Optionally, the pad is electrically connected to the signal resolving board and the coil wound on the coil board.

By adopting the technical scheme, an extra connecting circuit is not required to be arranged between the signal resolving board and the coil board so that the electric signals in the coil can be transmitted to the signal resolving board, and the setting work between the coil board and the signal resolving board is simplified.

Optionally, the coil plate and the signal resolving plate are provided with a plurality of positioning holes, and the positioning holes penetrate through the coil plate.

By adopting the technical scheme, the installation position of the coil plate on the signal resolving plate is not prone to deviation.

Optionally, the coil plate and the signal resolving plate have different respective hole diameters of all positioning holes.

By adopting the technical scheme, the expected side surface of the coil plate faces to the signal resolving plate, so that the coil plate is not easy to have installation errors.

In summary, the present application includes at least one of the following benefits:

1. the multilayer arrangement of coils is not required to be carried out by adopting a via hole process on the PCB like the traditional PCB, the plate manufacturing process of the signal resolving plate is simplified, and the coils are only required to penetrate into a plurality of groups of threading holes of one coil plate for winding, so that the delivery time and cost of products are reduced, and the yield is improved;

2. the influence on the size of the signal resolving plate is very small, and the signal resolving plate is more compact and convenient compared with other scattered line connection or special-shaped circuit board realization modes, and is convenient for application of hollow products;

3. different signal resolving boards are more conveniently adapted to different coil boards, so that a resolving circuit on the signal resolving board and a coil on the coil board can be designed and combined more freely.

Drawings

FIG. 1 is a schematic cross-sectional view of the position relationship among a rotor, a signal resolving plate and a coil plate in the present application;

fig. 2 is a schematic diagram of a side of the coil plate remote from the signal resolving plate.

Description of reference numerals: 1. a rotor; 2. a signal resolving board; 3. a coil plate; 31. threading holes; 32. an outer ring hole; 33. a pad; 34. positioning holes; 35. covering a copper hole; 36. an inner ring hole; 37. and (5) opening the hole block.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses planar coil induction type encoder, refer to fig. 1, include and await measuring rotor 1 that goes on connecting through the shaft coupling between the pivot, 1 one side of rotor is installed the signal and is solved board 2, the signal is solved board 2 and is set up and solve the circuit, the signal is solved board 2 and is installed coil plate 3 towards 1 one side of rotor, around establishing the coil on coil plate 3, when rotor 1 rotates, make the coil on the coil plate 3 produce the signal of telecommunication and transmit to the signal and solve the circuit of solving on the board 2 and solve and handle and output digital signal. The rotor 1, the coil plate 3 and the signal resolving plate may be installed in the same housing (not shown in the drawings).

Referring to fig. 2, the coil plate 3 is a circular ring, a plurality of groups of threading holes 31 are coaxially formed in the end face of the coil plate 3, a coil is wound in each group of threading holes 31, and a dotted line in fig. 2 is a part of the coil winding display in each group of threading holes 31. The through wires hole 31 runs through in coil panel 3 along 3 axial directions of coil panel, every group through wires hole 31 sets up two circles, the big round of place circumference diameter is outer circle hole 32 in every group through wires hole 31, the little round of place circumference diameter is inner circle hole 36 in every group through wires hole 31, outer circle hole 32 and inner circle hole 36 all set up the several evenly around coil panel 3 axis, inner circle hole 36 and outer circle hole 32 of same group through wires hole 31 are the dislocation arrangement, the diameter of the outer circle hole 32 place circumference of the through wires hole 31 of different groups equals, the diameter of the inner circle hole 36 place circumference of the through wires hole 31 of different groups equals, so that wear to locate through wires hole 31 and can obtain certain promotion around the coil cross-sectional area number of turns of establishing.

Referring to fig. 2, two opening blocks 37 are integrally formed on the periphery of the coil plate 3, positioning holes 34 are formed in the opening blocks 37 and the signal resolving plate 2, the opening blocks 37 are penetrated through by the positioning holes 34, the diameters of the positioning holes 34 corresponding to the two opening blocks 37 are large and small, the diameters of the two positioning holes 34 of the signal resolving plate 2 are also large and small, the positioning holes 34 of the two opening blocks 37 are aligned with the two positioning holes 34 of the signal resolving plate 2, and therefore the coil plate 3 is not prone to deviation corresponding to the position of the signal resolving plate 2.

Referring to fig. 2, the signal resolving plate 2 is fixedly connected with three groups of pads 33 towards the side of the coil plate 3, the three groups of pads 33 are uniformly distributed around the axis of the coil plate 3, each group of pads 33 is uniformly provided with a plurality of axes of the coil plate 3 in the peripheral area of the corresponding coil plate 3, a plurality of copper-clad holes 35 are formed in the periphery of the coil plate 3, the cross sections of the copper-clad holes 35 are semicircular, the inner walls of the circumferences of the copper-clad holes 35 are clad with copper, and the copper-clad holes 35 penetrate through two end faces of the coil plate 3. After aligning locating hole 34 of trompil piece 37 and locating hole 34 on the signal resolver board 2, with coil plate 3 along self axis towards signal resolver board 2 removal, make pad 33 correspond and insert to covering in the copper hole 35, then can cover the contact department of copper hole 35 to pad 33 and tin and fix, when realizing that coil plate 3 is fixed, the coil of coil plate 3, electrically connect between the resolving circuit on pad 33 and the signal resolver board 2, need not add extra other connecting circuit again and make the electric signal transmission in the coil of coil plate 3 for signal resolver board 2.

The implementation principle of the planar coil induction type encoder provided by the embodiment of the application is as follows: the rotor 1 rotates, so that corresponding electric signals are generated in coils on the coil plate 3 and transmitted to a resolving circuit in the signal resolving plate 2, and the signal resolving plate 2 resolves the electric signals and outputs digital signals capable of reflecting the rotation angle of the rotating shaft to be detected.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a plane coil induction type encoder, includes rotor (1) of being connected with the pivot that awaits measuring, solves the signal of converting into the digital signal of the pivot turned angle that awaits measuring and solves board (2), its characterized in that with the signal of telecommunication: one side of the signal resolving plate (2) is provided with a coil plate (3), a plurality of groups of threading holes (31) are formed in the coil plate (3), and a coil is wound in each group of threading holes (31).

2. The planar coil inductive encoder as claimed in claim 1, wherein: every group through wires hole (31) divide into two circles, and every circle through wires hole (31) is around the axis of rotation equipartition several of the pivot that awaits measuring, and two circles through wires holes (31) of the same group are staggered mutually, and the diameter on the circumference of two circles through wires holes (31) of the same group is different.

3. A planar coil induction encoder as claimed in claim 2, wherein: the two circles in the same group are provided with an outer circle hole (32) with a large diameter on the circumference where the threading holes (31) are respectively located, the two circles in the same group are provided with an inner circle hole (36) with a small diameter on the circumference where the threading holes (31) are respectively located, the diameters of the outer circle holes (32) corresponding to the threading holes (31) in different groups on the circumferences where the threading holes (31) are respectively located are consistent, and the diameters of the inner circle holes (36) corresponding to the threading holes (31) in different groups on the circumferences where the threading holes are respectively located are consistent.

4. A planar coil induction encoder as claimed in claim 1, wherein: and a plurality of bonding pads (33) fixedly connected to the signal resolving board (2) and used for fixing the position of the coil board (3) are arranged on the periphery of the coil board (3).

5. The planar coil inductive encoder as claimed in claim 4, wherein: the coil plate (3) is provided with a plurality of copper-clad holes (35) at the periphery, and each bonding pad (33) is correspondingly and fixedly connected with one copper-clad hole (35).

6. The planar coil induction encoder as claimed in claim 4, wherein: the bonding pad (33) is electrically connected with the coil wound on the signal resolving plate (2) and the coil plate (3).

7. A planar coil induction encoder as claimed in claim 1, wherein: a plurality of positioning holes (34) are formed in the coil plate (3) and the signal resolving plate (2), and the positioning holes (34) penetrate through the coil plate (3).

8. The planar coil induction encoder as claimed in claim 7, wherein: the diameters of all the positioning holes (34) of the coil plate (3) and the signal resolving plate (2) are different.