CN215114390U

CN215114390U - Integrated differential transformer type angular displacement sensor

Info

Publication number: CN215114390U
Application number: CN202121035545.8U
Authority: CN
Inventors: 丁沛祺; 严惠忠
Original assignee: Wuxi Helie Sensor Co ltd
Current assignee: Wuxi Helie Sensor Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-12-10
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses an integrated differential transformer type angular displacement sensor, which comprises a shell, a sensor main body, a switching tube, a circuit board, an end cover and an external plug-in component; the shell is of a cylindrical structure and is provided with an accommodating cavity, an opening, a mounting hole and a cylinder bottom, wherein the opening and the mounting hole are communicated with the accommodating cavity; the sensor main body is accommodated in the accommodating cavity and provided with a rotating shaft, one end of the rotating shaft penetrates through the through hole and extends outwards, and the other end of the rotating shaft is sleeved with the adapter tube in a penetrating manner; the adapter tube is sleeved with a circuit board in a penetrating manner, the circuit board is provided with a leading-out wire, the leading-out wire is electrically connected with the outer plug-in piece and data, the outer plug-in piece is installed on the installation hole, the circuit board is fixedly connected with the end cover, and the end cover is installed on the opening. The utility model discloses sensor main part and demodulation circuit encapsulation are in the same place, reduce the field wiring, reduce the loss that signal transmission produced, have improved the measurement accuracy of sensor.

Description

Integrated differential transformer type angular displacement sensor

Technical Field

The utility model relates to a differential transformer formula angular displacement sensor field especially relates to a differential transformer formula angular displacement sensor of integrated form.

Background

The common differential transformer type angular displacement sensor is one of the commonly used angular displacement sensors, is a device for realizing measurement by utilizing the self-inductance or mutual inductance change of a coil, has the advantages of high sensitivity, good linearity and the like, but the signal of the sensor is lost after being transmitted for a long distance, so that the precision of the sensor is influenced, the cost is increased when the wiring is longer, and some inconvenience is brought to installation and maintenance;

therefore, in combination with the above-mentioned technical problems, there is a need to provide a new technical solution.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists among the prior art, the utility model provides a simple structure, sensor main part and demodulation circuit integrated package, measurement accuracy are higher and sturdy and durable's differential transformer formula angular displacement sensor of integrated form, concrete technical scheme is as follows:

an integrated differential transformer type angular displacement sensor comprises a shell, a sensor main body, a switching tube, a circuit board, an end cover and an outer plug-in component;

the shell is of a cylindrical structure and is provided with an accommodating cavity, an opening, a mounting hole and a cylinder bottom, wherein the opening and the mounting hole are communicated with the accommodating cavity, the mounting hole is formed in one side of the shell, the opening is opposite to the cylinder bottom, and a through hole is formed in the cylinder bottom;

the sensor main body is accommodated in the accommodating cavity and provided with a rotating shaft penetrating through the sensor main body, one end of the rotating shaft penetrates through the through hole and extends outwards, and the other end of the rotating shaft is sleeved with a switching pipe in a penetrating manner;

the adapter tube is sleeved with a circuit board in a penetrating mode, a leading-out wire is arranged on the circuit board and is electrically and data connected with the outer plug, the outer plug is installed on the installation hole, the circuit board is fixedly connected with the end cover, and the end cover is detachably installed on the opening.

As a preferable solution of the integrated differential transformer type angular displacement sensor of this patent, the sensor main body is fixed in the accommodating cavity by a fixing member;

the sensor is characterized in that a flange plate is sleeved on the sensor main body, at least one through hole is formed in the flange plate, a fixing hole is formed in the position, corresponding to the through hole, of the cylinder bottom, and the fixing piece penetrates through the through hole and the fixing hole in sequence and fixes the sensor main body on the cylinder bottom.

As this patent an integrated form differential transformer formula angular displacement sensor's a preferred scheme, seted up the trompil that link up on the circuit board, set up the accommodation hole that link up on the end cover, the switching pipe passes trompil and accommodation hole in proper order.

As a preferred scheme of the integrated differential transformer type angular displacement sensor, the adapting tube comprises a sleeving section and a containing section along the axis direction, a fixing groove is formed in one end of the sleeving section, the other end of the rotating shaft is fixed in the fixing groove, and the circuit board is sleeved on the sleeving section through a hole.

As a preferred scheme of the integrated differential transformer type angular displacement sensor, the integrated differential transformer type angular displacement sensor further comprises a bearing, wherein the bearing is sleeved on the accommodating section, a bearing groove is formed in the end cover, and the bearing is accommodated in the bearing groove.

As a preferable scheme of the integrated differential transformer type angular displacement sensor, the circuit board is provided with at least one potentiometer, the end cover is provided with a groove matched with the potentiometer, and the potentiometer is accommodated in the groove.

As an optimized scheme of the integrated differential transformer type angular displacement sensor, the switching tube is fixedly sleeved at the other end of the rotating shaft through a rivet, a riveting hole is formed in the side wall of the sleeved section and communicated with the fixing groove, a riveting groove is formed in the side wall of the other end of the rotating shaft, and the rivet penetrates through the riveting hole and extends into the riveting groove.

As a preferable scheme of the integrated differential transformer type angular displacement sensor, the outer diameter of the bushing section is larger than the outer diameter of the accommodating section, the inner diameter of the bearing is matched with the outer diameter of the accommodating section, and the inner diameter of the bearing is smaller than the outer diameter of the bushing section;

the bearing groove is arranged coaxially with the accommodating hole.

As a preferred scheme of the integrated differential transformer type angular displacement sensor, the shell, the sensor main body, the adapter tube, the circuit board and the end cover are all coaxially arranged;

the circuit board has a demodulation circuit.

Compared with the prior art, the utility model discloses one or more following beneficial effect have at least:

(1) this patent integrated form differential transformer formula angular displacement sensor, its demodulation circuit and sensor main part encapsulation are in the same place, reduce the field wiring to reduce the loss that sensor signal transmission produced, be favorable to improving the measurement accuracy of sensor.

(2) The integrated differential transformer type angular displacement sensor disclosed by the patent integrally encapsulates the demodulation circuit and the sensor main body in the shell at the same time, is convenient for field installation and maintenance, and simultaneously reduces field wiring, thereby being beneficial to reducing the cost.

(3) The integrated differential transformer type angular displacement sensor is simple in structure, easy to manufacture, good in durability and convenient to popularize and use.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art 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 it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an explosion structure of an integrated differential transformer type angular displacement sensor according to the present invention;

fig. 2 is a schematic view of a three-dimensional structure of an integrated differential transformer type angular displacement sensor according to the present invention in one direction;

fig. 3 is a schematic perspective view of another direction of the integrated differential transformer type angular displacement sensor according to the present invention;

FIG. 4 is a schematic perspective view of the housing of FIG. 1;

FIG. 5 is a schematic perspective view of one orientation of the sensor body of FIG. 1;

FIG. 6 is a schematic perspective view of the sensor body of FIG. 1 in another orientation;

FIG. 7 is a schematic perspective view of the adapter tube of FIG. 1;

FIG. 8 is a schematic perspective view of the circuit board of FIG. 1;

fig. 9 is a perspective view of the end cap of fig. 1.

The sensor comprises a shell 1, a sensor body 2, an adapter tube 3, a circuit board 4, an end cover 5, an outer plug 6, a bearing 7, a containing cavity 11, an opening 12, a mounting hole 13, a cylinder bottom 14, a through hole 141, a fixing hole 142, a rotating shaft 21, a riveting groove 211, a flange plate 22, a through hole 221, a sleeving section 31, a containing section 32, a fixing groove 311, a riveting hole 312, an opening 41, a first potentiometer 42, a second potentiometer 43, a containing hole 51, a bearing groove 52, a first groove 53 and a second groove 54.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "one end", "one side", "the other side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "provided," "connected," "disposed," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1-9, as shown in fig. 1-3, an integrated differential transformer type angular displacement sensor includes a housing 1, a sensor main body 2, an adapter tube 3, a circuit board 4, an end cap 5, an outer plug 6 and a bearing 7; in the example, the housing 1, the sensor body 2, the adapter tube 3, the circuit board 4, the end cap 5 and the bearing 7 are all coaxially arranged.

The housing 1 is a cylindrical structure, as shown in fig. 4, the housing 1 has a containing cavity 11, an opening 12, a mounting hole 13 and a bottom 14, the opening 12 and the mounting hole 13 are both communicated with the containing cavity 11, the mounting hole 13 is arranged on one side of the housing 1, the opening 12 is arranged opposite to the bottom 14, a through hole 141 is arranged on the bottom 14, and in the example, the through hole 141 is arranged coaxially with the housing 1.

The sensor main body 2 is accommodated in the accommodating cavity 11, as shown in fig. 5 and 6, the sensor main body 2 has a rotating shaft 21 penetrating through the sensor main body 2, one end of the rotating shaft 21 penetrates through the through hole 141 and extends outwards, the other end of the rotating shaft 21 penetrates through the adapter tube 3, the adapter tube 3 is fixedly sleeved at the other end of the rotating shaft 21, preferably, the sensor main body 2 is fixed in the accommodating cavity 11 through a fixing member such as a bolt, but not limited to the bolt, or other fixing members capable of fixing, a flange plate 22 is sleeved on the sensor main body 2, at least one through hole 221 is formed in the flange plate 22, the position of the cylinder bottom 14 corresponding to the through hole 221 is provided with a fixing hole 142, and the fixing member sequentially penetrates through the through hole 221 and the fixing hole 142 and fixes the sensor main body 2 on the cylinder bottom 14. In an example, four through holes 221 are formed in the flange plate, the four through holes 221 are annularly wound on the flange plate 22 at equal intervals, and the through holes 221 are arc-shaped holes. In the example, the rotating shaft is an iron core, and the iron core rotates to change a magnetic circuit in the sensor body 2, so that the output differential voltage is synchronously changed.

The adapter tube 3 sequentially penetrates through the circuit board 4 and the end cover 5, as shown in fig. 7, the adapter tube 3 comprises a sleeve penetrating section 31 and a containing section 32 along the axis direction, the outer diameter of the sleeve penetrating section 31 is larger than that of the containing section 32, a fixing groove 311 is formed in one end of the sleeve penetrating section 31, the other end of the rotating shaft 21 is fixed in the fixing groove 311, in the example, the adapter tube 3 is fixedly sleeved at the other end of the rotating shaft 21 through a rivet, a riveting hole 312 is formed in the side wall of the sleeve penetrating section 31, the riveting hole 312 is communicated with the fixing groove 311, a riveting groove 211 is formed in the side wall of the other end of the rotating shaft 21, and the rivet penetrates through the riveting hole 312 and extends into the riveting groove 211.

Seted up the trompil 41 that link up on the circuit board 4, trompil 41 internal diameter with wear set section 31 external diameter phase-match, be provided with accommodation hole 51 and bearing groove 52 on the end cover 5, accommodation hole 51 is the perforating hole, accommodation hole 51 and the coaxial setting of bearing groove 52, accommodation hole 51 internal diameter is not less than hold section 32 external diameter, circuit board 4 wears to overlap on wearing set section 31 through trompil 41, circuit board 4 can freely rotate on wearing set section 31, bearing 7 wears to overlap on holding section 32, bearing 7 holds in bearing groove 52, hold section 32 and pass the bearing and extend to in the accommodation hole 51, of course, can also as required, it outwards extends to pass accommodation hole 51 to hold section 32. In the illustrated example, the inner diameter of the receiving hole 51 is larger than the outer diameter of the receiving section 32; in the example, the inner diameter of the bearing 7 is matched to the outer diameter of the receiving section 32, and the inner diameter of the bearing 7 is smaller than the outer diameter of the penetrating section 31.

This patent with demodulation circuit and sensor main part 2 integrated package in shell 1, the on-the-spot installation and maintenance of being convenient for have also reduced the on-the-spot wiring simultaneously, reduce the wiring and not only help practicing thrift the cost, more importantly can reduce the loss that sensor signal transmission produced to can improve the measurement accuracy of sensor.

The circuit board 4 is accommodated in the accommodating cavity 11, an outgoing line is arranged on the circuit board 4 and is electrically and data connected with the outer plug-in component 6, the outer plug-in component 6 is installed on the installation hole 13, a demodulation circuit is arranged on the circuit board and outputs a standard electric signal after demodulating a sensor signal, the standard electric signal is transmitted to a rear end system through the outer plug-in component, and power supply of the circuit board is also transmitted to the circuit board 4 through the outgoing line and the outer plug-in component, so that normal work of the circuit board is guaranteed. The circuit board 4 is fixedly connected with the end cover 5, and the circuit board 4 can be detachably fixed on the end cover 5 through bolts, rivets and the like; the end cap 5 is detachably mounted on the opening 12. In an example, the circuit board 4 is provided with a hole, the end cap 5 is provided with a groove at a corresponding position of the hole, and the circuit board 4 is fixed on the end cap 5 by bolts, rivets or other fixing members. Similarly, the end cap 5 may be fixed to the housing by bolts, rivets or other fixing members, which will not be described herein.

In a preferred embodiment, as shown in fig. 8 and 9, at least one potentiometer is disposed on the circuit board 4, a groove matched with the potentiometer is formed on the end cover 5, and the potentiometer is accommodated in the groove; and arranging a potentiometer for field debugging and use during sensor installation.

In this embodiment, the potentiometer includes a first potentiometer 42 and a second potentiometer 43, the first potentiometer 42 and the second potentiometer 43 have different shapes and sizes, the groove includes a first groove 53 and a second groove 54, the first potentiometer 42 is accommodated in the first groove 53, and the second potentiometer 43 is accommodated in the second groove 54. Of course, the potentiometer may not be accommodated in the groove according to the requirement of field debugging, and the potentiometer and the groove are only used as a reservation.

Differential transformer formula angular displacement sensor of integrated form have following beneficial effect:

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications and changes may be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An integrated differential transformer type angular displacement sensor is characterized by comprising a shell (1), a sensor main body (2), an adapter tube (3), a circuit board (4), an end cover (5) and an outer plug (6);

the shell (1) is of a cylindrical structure, the shell (1) is provided with an accommodating cavity (11), an opening (12), a mounting hole (13) and a cylinder bottom (14), the opening (12) and the mounting hole (13) are communicated with the accommodating cavity (11), the mounting hole (13) is formed in one side of the shell (1), the opening (12) and the cylinder bottom (14) are oppositely arranged, and the cylinder bottom (14) is provided with a through hole (141);

the sensor body (2) is accommodated in the accommodating cavity (11), the sensor body (2) is provided with a rotating shaft (21) penetrating through the sensor body (2), one end of the rotating shaft (21) penetrates through the through hole (141) and extends outwards, and the other end of the rotating shaft (21) is sleeved with a switching tube (3) in a penetrating manner;

the adapter tube (3) is sleeved with a circuit board (4) in a penetrating mode, a leading-out wire is arranged on the circuit board (4), the leading-out wire is electrically and data connected with an outer plug-in piece (6), the outer plug-in piece (6) is installed on a mounting hole (13), the circuit board (4) is fixedly connected with an end cover (5), and the end cover (5) is detachably installed on an opening (12).

2. The integrated differential transformer-based angular displacement sensor according to claim 1, characterized in that the sensor body (2) is fixed inside the housing cavity (11) by fixing means;

the sensor is characterized in that a flange plate (22) is sleeved on the sensor main body (2), at least one through hole (221) is formed in the flange plate, a fixing hole (142) is formed in the position, corresponding to the through hole (221), of the cylinder bottom (14), and the fixing piece penetrates through the through hole (221) and the fixing hole (142) in sequence and fixes the sensor main body (2) on the cylinder bottom (14).

3. The integrated differential transformer type angular displacement sensor according to claim 1, wherein the circuit board (4) is provided with a through opening (41), the end cap (5) is provided with a through receiving hole (51), and the adapter tube (3) sequentially passes through the opening (41) and the receiving hole (51).

4. The integrated differential transformer type angular displacement sensor according to claim 3, wherein the adapter tube (3) comprises a sleeve penetrating section (31) and a containing section (32) along an axial direction, a fixing groove (311) is formed at one end of the sleeve penetrating section (31), the other end of the rotating shaft (21) is fixed in the fixing groove (311), and the circuit board (4) is sleeved on the sleeve penetrating section (31) through the opening (41).

5. The integrated differential transformer angular displacement sensor according to claim 4, further comprising a bearing (7), wherein the bearing (7) is sleeved on the accommodating section (32), the end cover (5) is provided with a bearing groove (52), and the bearing (7) is accommodated in the bearing groove (52).

6. The integrated differential transformer angular displacement sensor according to claim 1, wherein the circuit board (4) is provided with at least one potentiometer, and the end cap (5) is provided with a groove in which the potentiometer is accommodated.

7. The integrated differential transformer type angular displacement sensor according to claim 4, wherein the adapter tube (3) is fixed to the other end of the rotating shaft (21) through a rivet, a rivet hole (312) is formed in a side wall of the sleeve penetrating section (31), the rivet hole (312) is communicated with the fixing groove (311), a rivet groove (211) is formed in a side wall of the other end of the rotating shaft (21), and the rivet penetrates through the rivet hole (312) and extends into the rivet groove (211).

8. The integrated differential transformer angular displacement sensor according to claim 5, wherein the piercing section (31) outer diameter is larger than the receiving section (32) outer diameter, the bearing (7) inner diameter matches the receiving section (32) outer diameter, the bearing (7) inner diameter is smaller than the piercing section (31) outer diameter;

the bearing groove (52) is arranged coaxially with the receiving hole (51).

9. The integrated differential transformer-based angular displacement sensor according to claim 1, wherein the housing (1), the sensor body (2), the adapter tube (3), the circuit board (4) and the end cap (5) are all coaxially arranged;

the circuit board (4) has a demodulation circuit.