CN214621107U - High-reliability angular displacement sensor - Google Patents

Abstract

The utility model discloses a high reliability angular displacement sensor, which comprises an outer shell, stator module, rotor subassembly and end cover, the shell is the tubular structure, the shell has and holds the chamber, the through-hole, opening and bobbin base, through-hole and opening all with hold the chamber intercommunication, the opening sets up with the bobbin base relatively, the perforation has been seted up on the bobbin base, one side of shell is seted up to the through-hole, stator module holds in holding the intracavity, the stator module surface is provided with the anaerobism layer, stator module is provided with the well cavity that link up along the axis direction, stator module is provided with the lead-out wire, the lead-out wire passes the through-hole and outwards extends, the rotor subassembly has the extension bar and the rotor main part of being connected with the extension bar, the extension bar passes the perforation and outwards extends, rotor main part holds in the cavity intracavity, the one end that the extension bar was kept away from to the rotor subassembly is inconsistent with the end cover, end cover fits on the opening. The utility model discloses set up the anaerobism layer, cross on the line cover fills sealing material and end cover seal welding shell, all be used for strengthening the high reliability of sensor.

Description

High-reliability angular displacement sensor

Technical Field

The utility model relates to an angle displacement sensor field especially relates to a high reliability angle displacement sensor.

Background

Compared with the traditional displacement sensor, the synchronous analyzer and the potentiometer, the angular displacement sensor adopts a non-contact design, converts angle measurement into measurement of capacitance change, resistance change, potential difference change or even other physical quantities, and effectively improves the long-term reliability of the angular displacement sensor;

the non-contact sensor of the angular displacement sensor is easily adapted to the adverse environments such as vibration, impact, moisture and smoke, but if the sensor is used in the adverse environments for a long time, the components of the sensor are easily oxidized, corroded, misplaced, stuck or damaged, and the like, so that the sensor is easily damaged, and the service life of the sensor is influenced.

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 discloses a set up anaerobic layer, increase the sealed and add the shock attenuation and firm fixation washer of sensor, provide a high reliability angle displacement sensor, concrete technical scheme is as follows:

a high-reliability angular displacement sensor comprises a shell, a stator assembly, a rotor assembly and an end cover;

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

the stator assembly is accommodated in the accommodating cavity, an anaerobic layer is arranged on the surface of the stator assembly, a through hollow cavity is arranged along the axis direction of the stator assembly, and an outgoing line is arranged on the stator assembly and penetrates through the through hole and extends outwards;

the rotor assembly is provided with an extension bar and a rotor main body connected with the extension bar, the extension bar penetrates through the through hole and extends outwards, the rotor main body is accommodated in the hollow cavity, and one end of the rotor assembly, which is far away from the extension bar, is abutted to the end cover;

the end cover is sealed and covered on the opening.

Further, a bearing groove is arranged at the bottom of the cylinder, and the bearing groove and the through hole are coaxially arranged;

the end cover is provided with an accommodating groove;

the rotor assembly is sequentially and integrally connected with an extension rod, a first bearing rod, a rotor main body and a second bearing rod along the length direction;

the anaerobic layer is an anaerobic adhesive layer.

Further, the bearing device also comprises a first bearing and a second bearing;

the first bearing is sleeved on the first bearing rod in a penetrating way, the first bearing is accommodated in the bearing groove,

the second bearing is sleeved on the second bearing rod in a penetrating mode, and the second bearing is accommodated in the accommodating groove.

Further, the end cap is welded to the opening of the housing.

Further, the shell also comprises a wire passing sleeve;

the wire passing sleeve comprises a containing part and a stopping part, the containing part is contained in the through hole, the stopping part is stopped on the surface of the outer shell, and the outgoing wire penetrates out of the wire passing sleeve.

Further, a sealing material is filled in the wire passing sleeve.

The bearing comprises a bearing rod, a bearing seat, a plurality of bearing grooves and a plurality of bearing rings, wherein the bearing rod is arranged on the bearing seat, the bearing rings are arranged on the bearing seat, and the bearing seats are arranged on the bearing seat.

Furthermore, two protruding parts are symmetrically arranged on the rotor main body along the circumferential direction.

Further, stator module has seted up the trompil that link up along length direction, the trompil is close to well cavity one side and is provided with the clearance, the trompil passes through clearance and well cavity intercommunication, and stator module circumference interval evenly distributed is followed to a plurality of trompils.

Furthermore, the shell is sleeved with a flange plate, and a plurality of arc-shaped holes are formed in the flange plate along the circumferential direction.

A high reliability angular displacement sensor, at least, have following one or more beneficial effect:

(1) the utility model discloses a high reliability angle displacement sensor, its stator module is provided with the anaerobic layer, prevents the oxidation corrosion of stator module, guarantees the measurement accuracy of angle displacement, strengthens the reliability of sensor, also helps prolonging the life of stator module and sensor;

(2) the high-reliability angular displacement sensor of the utility model has the advantages that the wire sleeve is filled with the sealing material, the parts in the accommodating cavity are isolated from contacting with the atmosphere, and the parts in the accommodating cavity are prevented from being oxidized and corroded, so that the service life of the sensor is prolonged, and the use reliability of the sensor is improved;

(3) the high-reliability angular displacement sensor has the advantages that the end cover and the shell are sealed and welded, the sealing performance of the sensor is guaranteed, the gasket is arranged between the second bearing and the end cover, the firmness of the rotor assembly is guaranteed, external forces such as vibration and impact can be effectively resisted, and the reliability of the sensor is enhanced;

(4) the utility model discloses a high reliability angular displacement sensor, its simple structure easily assembles because of its high reliability of shock-resistant, wet heat and salt fog resistant for the range of application is more extensive.

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 a high-reliability angular displacement sensor according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the angular displacement sensor with high reliability according to the present invention;

FIG. 3 is a schematic perspective view of the housing of FIG. 1;

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

FIG. 5 is a perspective view of the stator assembly of FIG. 1;

FIG. 6 is a perspective view of the rotor assembly of FIG. 1;

FIG. 7 is a schematic view of the A-direction structure of the rotor assembly of FIG. 6;

FIG. 8 is a perspective view of the end cap of FIG. 1;

fig. 9 is a perspective view of the wire passing cover in fig. 1.

The bearing comprises a shell 1, a first bearing 2, a stator assembly 3, a rotor assembly 4, a second bearing 5, an end cover 6, a gasket 7, a containing cavity 11, a through hole 12, an opening 13, a barrel bottom 14, a wire passing sleeve 15, a containing part 151, a stopping part 152, a sealing material 153, a flange plate 16, an arc hole 161, a bearing groove 141, a through hole 142, a hollow cavity 31, an opening 32, a gap 33, a lead-out wire 34, an extension rod 41, a first bearing rod 42, a rotor main body 43, a second bearing rod 44, a bulge 431 and a containing groove 61.

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, "a plurality" means two or more unless specifically limited otherwise.

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, fig. 1 is an exploded schematic view of a high-reliability angular displacement sensor according to the present invention, fig. 2 is a schematic sectional view of the high-reliability angular displacement sensor according to the present invention, fig. 3 is a schematic perspective view of a housing in fig. 1, fig. 4 is a schematic plan view of the housing in fig. 1, fig. 5 is a schematic perspective view of a stator assembly in fig. 1, fig. 6 is a schematic perspective view of a rotor assembly in fig. 1, fig. 7 is a schematic structural view of an a direction of the rotor assembly in fig. 6, fig. 8 is a schematic perspective view of an end cap in fig. 1, and fig. 9 is a schematic perspective view of a wire passing cap in fig. 1.

As shown in fig. 1-2, a high-reliability angular displacement sensor comprises a housing 1, a first bearing 2, a stator assembly 3, a rotor assembly 4, a second bearing 5, an end cover 6 and a gasket 7;

the housing 1 is of a cylindrical structure, as shown in fig. 3-4, the housing 1 has a containing cavity 11, a through hole 12, an opening 13 and a cylinder bottom 14, the through hole 12 and the opening 13 are both communicated with the containing cavity 11, the opening 13 is opposite to the cylinder bottom 14, the through hole 12 is opened at one side of the housing 1, a bearing groove 141 and a through hole 142 are opened on the cylinder bottom 14, and the bearing groove 141 and the through hole 142 are coaxially arranged; in an example, the accommodating cavity 11 is a circular accommodating cavity, a flange 16 is sleeved on the housing 1, the flange 16 is close to the cylinder bottom 14, and a plurality of arc-shaped holes 161 are formed in the flange 16 along the circumferential direction.

The stator assembly 3 is accommodated in the accommodating cavity 11, as shown in fig. 5, the stator assembly 3 is a hollow cylinder, an anaerobic layer is arranged on the surface of the stator assembly 3, the stator assembly 3 is provided with a through hollow cavity 31, the hollow cavity 31 is a circular hollow cavity, the stator assembly 3 is provided with an outgoing line 34, and the outgoing line 34 penetrates through the through hole 12 and extends outwards; in an example, the inner diameter of the accommodating cavity 11 is not smaller than the outer diameter of the stator assembly 3. In the example, stator module 3 has seted up the trompil 32 that link up along length direction, trompil 32 is close to well cavity 31 one side and is provided with clearance 33, trompil 32 passes through clearance 33 and well cavity 31 intercommunication, and a plurality of trompils 32 are along 3 circumference evenly distributed of stator module, the material of anaerobic layer is the anaerobism glue.

The surface of the stator assembly 3 is provided with an anaerobic layer, so that the surface of the stator assembly 3 is not easy to be oxidized and corroded, the durability of the stator assembly 3 is enhanced, the sensitivity and the reliability of the sensor are improved, and the measurement precision of angular displacement is ensured.

As shown in fig. 6-7, the rotor assembly 4 is integrally connected with a protruding rod 41, a first bearing rod 42, a rotor body 43 and a second bearing rod 44 along the length direction, the first bearing 2 is inserted into the first bearing rod 42, the second bearing 5 is inserted into the second bearing rod 44, the second bearing rod 44 of the second bearing is in contact with the end cap 6, and the protruding rod 41 passes through the through hole 142 and extends outward;

the rotor body 43 is inserted into the hollow cavity 31 of the stator assembly 3, and the length of the rotor 42 is the same as that of the stator assembly 3. In an example, two protrusions 431 are symmetrically arranged on the rotor main body 43 along the circumferential direction, and the central angle of the protrusions 431 is 90 degrees.

The first bearing 2 is accommodated in the bearing groove 141; the end cap 6 is provided with a receiving groove 61, and as shown in fig. 8, the second bearing 5 is received in the receiving groove 61. In an example, a gasket 7 is further disposed between the second bearing 5 and the end cover 6, the gasket 7 is inserted into the second bearing rod 44, the gasket 7 is inserted into the outer side of the second bearing 5, the plurality of gaskets 7 are inserted into the receiving groove 61, and the second bearing 5 abuts against the end cover 6 through the gasket 7. According to the gap size between second bearing 5 and the end cover 6, add gasket 7 of corresponding quantity to increase the fastness of bearing and rotor subassembly in holding chamber 11, can effectively resist not good external forces such as vibration, impact, increase the shock resistance of sensor.

The end cover 6 is sealed and covered on the opening 13. In the example, the end cap 6 is laser welded to the housing 1 at the opening 13. The end cover 6 is firmly sealed on the shell 1 so as to improve the firmness and the sealing performance of the sensor and enhance the high reliability of the sensor.

In a preferred embodiment, the housing 1 further comprises a wire passing sleeve 15;

as shown in fig. 9, the wire passing sleeve 15 includes a receiving portion 151 and a stopping portion 152, the receiving portion 151 is received in the through hole 12, the stopping portion 152 is stopped on the surface of the housing 1, and the lead wire 34 passes through the wire passing sleeve 15. In an example, the outer diameter of the accommodating portion 151 is consistent with the inner diameter of the through hole 12, and the outer diameter of the stopping portion 152 is larger than the inner diameter of the through hole 12. Preferably, the wire passing sleeve 15 is filled with a sealing material 153. In an example, the sealant is 914 glue.

The wire passing sleeve 15 is filled with a sealing material 153, so that the sealing performance of the sensor is better, the parts in the accommodating cavity are prevented from being oxidized and corroded, the sensitivity and the reliability of the sensor are improved, and the service life of the sensor is prolonged.

The sensor is installed as follows, the rotor body 43 is sleeved in the hollow cavity 31 of the stator assembly 3, the first bearing 2 is sleeved on the first bearing rod 42, the second bearing 5 is sleeved on the second bearing rod 44, the stator assembly 3 is accommodated in the accommodating cavity 11 of the shell 1, meanwhile, the first bearing 2 is received in the bearing groove 141 of the cylinder bottom 14, the protruding rod 411 passes through the through hole 142, and extends to the outside, the wire passing sleeve 15 is accommodated in the through hole 12, the outgoing line 34 of the stator assembly 3 extends to the outside through the wire passing sleeve 15, the wire passing sleeve 15 is filled with a sealing material 153 to seal the wire passing sleeve 15, a plurality of gaskets 7 are accommodated in the accommodating grooves of the end caps 6, the second bearing 5 is accommodated in the accommodating groove 61, the end cover 6 covers the opening 13 of the housing 1, and the joint of the end cover 6 and the housing 1 is uniformly sealed by laser welding.

The utility model discloses a novel net twine pincers's beneficial effect is:

(1) the utility model discloses a high reliability angle displacement sensor, its stator module is provided with the anaerobic layer, prevents the oxidation corrosion of stator module, guarantees the measurement accuracy of angle displacement, strengthens the reliability of sensor, also helps prolonging the life of stator module and sensor;

(2) the high-reliability angular displacement sensor of the utility model has the advantages that the wire sleeve is filled with the sealing material, the parts in the accommodating cavity are isolated from contacting with the atmosphere, and the parts in the accommodating cavity are prevented from being oxidized and corroded, so that the service life of the sensor is prolonged, and the use reliability of the sensor is improved;

(3) the high-reliability angular displacement sensor has the advantages that the end cover and the shell are sealed and welded, the sealing performance of the sensor is guaranteed, the gasket is arranged between the second bearing and the end cover, the firmness of the rotor assembly is guaranteed, external forces such as vibration and impact can be effectively resisted, and the reliability of the sensor is enhanced;

(4) the utility model discloses a high reliability angular displacement sensor, its simple structure easily assembles because of its high reliability of shock-resistant, wet heat and salt fog resistant for the range of application is more extensive.

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 (10)

1. A high-reliability angular displacement sensor is characterized by comprising a shell (1), a stator assembly (3), a rotor assembly (4) and an end cover (6);

the shell (1) is of a cylindrical structure, the shell (1) is provided with an accommodating cavity (11), a through hole (12), an opening (13) and a cylinder bottom (14), the through hole (12) and the opening (13) are communicated with the accommodating cavity (11), the opening (13) and the cylinder bottom (14) are oppositely arranged, a through hole (142) is formed in the cylinder bottom (14), and the through hole (12) is formed in one side of the shell (1);

the stator assembly (3) is accommodated in the accommodating cavity (11), an anaerobic layer is arranged on the surface of the stator assembly (3), a through hollow cavity (31) is arranged in the stator assembly (3) along the axis direction, an outgoing line (34) is arranged on the stator assembly (3), and the outgoing line (34) penetrates through the through hole (12) and extends outwards;

the rotor assembly (4) is provided with an extension rod (41) and a rotor body (43) connected with the extension rod (41), the extension rod (41) penetrates through the through hole (142) and extends outwards, the rotor body (43) is accommodated in the hollow cavity (31), and one end, far away from the extension rod (41), of the rotor assembly (4) is abutted to the end cover (6);

the end cover (6) is sealed and covered on the opening (13).

2. The angular displacement sensor of claim 1, wherein the bottom (14) is provided with a bearing groove (141), wherein the bearing groove (141) is arranged coaxially with the through hole (142);

the end cover (6) is provided with an accommodating groove (61);

the rotor assembly (4) is sequentially and integrally connected with a protruding rod (41), a first bearing rod (42), a rotor main body (43) and a second bearing rod (44) along the length direction;

the anaerobic layer is an anaerobic adhesive layer.

3. A highly reliable angular displacement sensor according to claim 2, further comprising a first bearing (2) and a second bearing (5);

the first bearing (2) is sleeved on the first bearing rod (42) in a penetrating way, the first bearing (2) is accommodated in the bearing groove (141),

the second bearing (5) is sleeved on the second bearing rod (44), and the second bearing (5) is accommodated in the accommodating groove (61).

4. The high reliability angular displacement sensor according to claim 1, characterized in that the end cap (6) is welded at the opening (13) of the housing (1).

5. The high reliability angular displacement sensor according to claim 1, characterized in that the housing (1) further comprises a wire-passing bush (15);

the wire passing sleeve (15) comprises an accommodating part (151) and a stopping part (152), the accommodating part (151) is accommodated in the through hole (12), the stopping part (152) is stopped on the surface of the shell (1), and the outgoing wire (34) penetrates out of the wire passing sleeve (15).

6. The sensor according to claim 5, characterized in that said wire-passing sheath (15) is filled with a sealing material (153).

7. The angular displacement sensor with high reliability as claimed in claim 3, further comprising a washer (7), wherein the washer (7) is sleeved on the second bearing rod (44), the washer (7) is arranged outside the second bearing (5), a plurality of washers (7) are sleeved in the accommodating groove (61), and the second bearing (5) is abutted against the end cover (6) through the washers (7).

8. The angular displacement sensor of claim 1, wherein the rotor body (43) is provided with two protrusions (431) symmetrically in circumferential direction.

9. The angular displacement sensor with high reliability according to claim 1, wherein the stator assembly (3) is provided with a through opening (32) along the length direction, a gap (33) is arranged at one side of the opening (32) close to the hollow cavity (31), the opening (32) is communicated with the hollow cavity (31) through the gap (33), and the plurality of openings (32) are uniformly distributed along the circumferential direction of the stator assembly (3) at intervals.

10. The angular displacement sensor with high reliability according to claim 1, wherein the housing (1) is sleeved with a flange (16), and the flange (16) is provided with a plurality of arc-shaped holes (161) along the circumferential direction.

Images