Thread throwing type high-precision linear displacement eddy current sensor

Abstract

The utility model particularly relates to a thread throwing type high-precision linear displacement eddy current sensor. The wire throwing type high-precision linear displacement eddy current sensor comprises a cover plate, a PCB (Printed Circuit Board) and a shell which are arranged in a covering manner in sequence, wherein the cover plate is fixedly connected with the shell; one side of the shell is connected with a wire harness mechanism; the wire harness mechanism comprises a wire harness, a connector and a mounting block; the connector is fixedly connected with one end of the wire harness; the mounting block is fixedly connected with the other end of the wire harness; and the mounting block is electrically connected with the PCB. According to the wire throwing type high-precision linear displacement eddy current sensor, the cover plate, the PCB and the shell are arranged in a covering mode and then are connected with the wire harness mechanism in a sealed mode, the structural design is simple, practicability is high, and the length of a wire harness in the wire harness mechanism can be replaced and adjusted according to actual requirements.

Description

Technical Field

[0001] The utility model specifically relates to a wire-throwing high-precision linear displacement eddy current sensor. Background Art

[0002] Linear displacement sensors convert linear mechanical displacement into electrical signals and are now widely used. For example, in automotive steering systems, it is necessary to measure relatively long displacements of approximately 20 to 30 cm to monitor position. Similarly, displacement sensors for measuring position are used in vehicle spring buffers, shock absorbers, or seat rails. In addition to vehicles, these sensors are also used in machine tools with corresponding XY adjustment tables, equipment manufacturing, and production lines.

[0003] Existing sensors cannot adjust the installation length according to needs, which makes them unable to be adapted for use in different environments and have low practicality. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision linear displacement eddy current sensor with a swinging wire. After the cover plate, PCB board and shell cover are sealed and arranged, they are sealed and connected with the wiring harness mechanism, so that the length of the wiring harness can be replaced and adjusted according to actual needs.

[0005] In order to solve the above technical problems, the utility model provides a high-precision linear displacement eddy current sensor with a swinging wire, comprising: a cover plate, a PCB board, and a shell that are sequentially covered, and the cover plate is fixedly connected to the shell; a wiring harness mechanism is connected to one side of the shell; the wiring harness mechanism comprises: a wiring harness, a connector, and a mounting block; the connector is fixedly connected to one end of the wiring harness; the mounting block is fixedly connected to the other end of the wiring harness; and the mounting block is electrically connected to the PCB board.

[0006] Furthermore, a square groove is provided at the bottom of the shell; a plurality of limiting holes penetrating the bottom of the shell are provided in the square groove.

[0007] Furthermore, a U-shaped groove is provided near the bottom opening of the square groove; and a U-shaped baffle is clamped in the U-shaped groove.

[0008] Furthermore, a plurality of guide slopes are provided on the inner wall of the square groove arranged circumferentially.

[0009] Furthermore, a glue dispensing groove is circumferentially provided on the inner side edge of the shell.

[0010] Furthermore, a sealing ring and a sealing groove are provided at the bottom of the shell; the height of the sealing ring is greater than the depth of the sealing groove.

[0011] Furthermore, buckles are provided on the circumference of the side edges of the cover plate; and slots adapted to the buckles are provided on the circumference of the outer side edges of the shell.

[0012] Furthermore, a waterproof and breathable membrane is attached to the inner surface of the shell.

[0013] Furthermore, a corrugated tube is provided on the outside of the side of the wiring harness close to the connector; and a protective tube is provided on the outside of the side of the wiring harness close to the mounting block.

[0014] Furthermore, the cover plate and the shell are fixedly connected by welding.

[0015] The beneficial effect of the utility model is that the wire-swinging linear displacement sensor of the utility model is sealed and connected to the wiring harness mechanism after the cover plate, PCB board and shell cover are sealed and set. The structural design is simple and practical, and the length of the wiring harness in the wiring harness mechanism can be replaced and adjusted according to actual needs, which effectively solves the problem that the existing product structure cannot be adapted to different environments.

[0016] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is an exploded view of the utility model's high-precision linear displacement eddy current sensor;

[0020] Figure 2 This is a three-dimensional diagram of the utility model's high-precision linear displacement eddy current sensor;

[0021] Figure 3 It is a bottom view of the housing of the wire-throwing high-precision linear displacement eddy current sensor of the present invention.

[0022] In the picture:

[0023] Cover plate 1, buckle 11, PCB board 2, shell 3, square groove 31, limiting hole 311, guide slope 312, U-shaped groove 32, glue dispensing groove 33, sealing groove 34, card slot 35, mounting hole 36, wiring harness mechanism 4, wiring harness 41, bellows 42, connector 43, mounting block 44, protective cover 45, U-shaped baffle 5, sealing ring 6. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] Example 1

[0026] Figure 1 This is an exploded view of the utility model's high-precision linear displacement eddy current sensor;

[0027] Figure 2 This is a three-dimensional diagram of the utility model's high-precision linear displacement eddy current sensor;

[0028] like Figure 1 and Figure 2 As shown, this embodiment provides a high-precision linear displacement eddy current sensor of the swinging wire type, comprising: a cover plate 1, a PCB board 2, and a housing 3, which are sequentially covered and fixedly connected to each other, the cover plate 1 being fixedly connected to the housing 3; a wiring harness mechanism 4 being connected to one side of the housing 3; the wiring harness mechanism 4 comprising: a wiring harness 41, a connector 43, and a mounting block 44; the connector 43 being fixedly connected to one end of the wiring harness 41; the mounting block 44 being fixedly connected to the other end of the wiring harness 41; and the mounting block 44 being electrically connected to the PCB board 2. By sealingly connecting the cover plate 1, the PCB board 2, and the housing 3 together, the structural design is simple and highly practical, and the length of the wiring harness 41 in the wiring harness mechanism 4 can be replaced and adjusted according to actual needs, effectively solving the problem that the existing product structure cannot be adapted to different environments.

[0029] Among them, the side circumference of the cover plate 1 is provided with a snap 11; the outer side circumference of the shell 3 is provided with a card slot 35 adapted to the snap 11; when the cover plate 1 and the shell 3 are covered and installed, each snap 11 is snapped into the corresponding card slot 35 to achieve the fixation of the cover plate 1 and the shell 3, and the guiding and clamping functions are realized through the snap structure, which makes installation more convenient.

[0030] Since a glue dispensing groove 33 is circumferentially provided on the inner side of the shell 3, and the glue dispensing groove 33 is provided at the junction of the shell 3 and the cover plate 1, when the cover plate 1 and the shell 3 are covered, the RTV glue in the glue dispensing groove 33 will form a sealed connection between the cover plate 1 and the shell 3, thereby improving the overall sealing of the swing-line high-precision linear displacement eddy current sensor.

[0031] Figure 3 It is a bottom view of the housing of the wire-throwing high-precision linear displacement eddy current sensor of the present invention.

[0032] like Figure 3 As shown, the bottom of the housing 3 is provided with a square slot 31; within this slot 31 are several retaining holes 311 extending through the bottom of the housing 3. The PIN pins on the mounting block 44 are inserted through the corresponding retaining holes 311 and then into the connection holes on the PCB 2, thereby achieving an electrical connection between the mounting block 44 and the PCB 2 and completing the transmission of the collected signals.

[0033] A U-shaped groove 32 is provided near the bottom opening of the square groove 31; the U-shaped groove 32 engages a U-shaped baffle 5. The engagement of the U-shaped baffle 5 and the U-shaped groove 32 forms a cavity for accommodating the mounting block 44. Structural adhesive is injected into the cavity to ensure a tight fit between the square groove 31, the U-shaped baffle 5, and the mounting block 44, improving the product's sealing and strengthening the structural strength of the square groove 31, the U-shaped baffle 5, and the mounting block 44.

[0034] The inner wall of the square groove 31 is provided with a plurality of guide slopes 312. The plurality of guide slopes 312 facilitate the quick insertion of the mounting block 44 into the square groove 31.

[0035] In this embodiment, a sealing ring 6 and a sealing groove 34 are provided at the bottom of the housing 3. The height of the sealing ring 6 is greater than the depth of the sealing groove 34. Setting the height of the sealing ring 6 greater than the depth of the sealing groove 34 enables static sealing of the structure when external equipment is connected.

[0036] In this embodiment, a waterproof and breathable membrane is attached to the inner surface of the housing 3. The provision of the waterproof and breathable membrane can prevent moisture from penetrating into the interior of the housing.

[0037] In this embodiment, four mounting holes 36 are provided on the housing 3 to facilitate more stable connection with external devices.

[0038] In this embodiment, a corrugated tube 42 is provided on the outside of the wire harness 41 near the connector 43 because the corrugated tube 42 has its unique function in protecting the wire harness 41. First, it is very soft and can be bent into different angles as needed, which is unmatched by other materials. Second, it is resistant to high temperatures, fire retardant, easy to operate, and economical.

[0039] In this embodiment, a protective tube 45 is provided on the side of the wiring harness 41 near the mounting block 44. This protective tube 45 protects the portion of the wiring harness 41 not covered by the corrugated tube 42. When structural adhesive is injected into the cavity housing the mounting block 44, one end of the protective tube 45 is also secured therein, thereby strengthening the structural strength between the square slot 31, the U-shaped baffle 5, the mounting block 44, and the protective tube 45.

[0040] In this embodiment, the cover plate 1 and the housing 3 can be fixedly connected by, but not limited to, laser welding or ultrasonic welding.

[0041] In summary, the wire-swinging high-precision linear displacement eddy current sensor of the present invention is sealed and connected to the wiring harness mechanism 4 by covering and encapsulating the cover plate 1, PCB board 2, and shell 3. The structural design is simple and practical. The length of the wiring harness 41 in the wiring harness mechanism 4 can be replaced and adjusted according to actual needs, which effectively solves the problem that the existing product structure cannot be adapted to different environments. The wiring harness mechanism is assembled to the shell 3, which is simple to assemble and the cost of mass production automated assembly equipment is lower. When the cover plate 1 and the shell 3 are covered and installed, each buckle 11 is snapped into the corresponding slot 35 to achieve the fixation of the cover plate 1 and the shell 3. The guiding and clamping functions are realized by the snap-fit ​​structure, and the installation is more convenient; when the cover 1 is covered with the shell 3, the RTV glue in the glue groove 33 will form a sealed connection between the cover 1 and the shell 3, thereby improving the overall sealing of the high-precision linear displacement eddy current sensor of the throwing-line type; by clamping the U-shaped baffle 5 and the U-shaped groove 32, a cavity for accommodating the mounting block 44 is formed, and the structural glue is poured into the cavity to achieve a close fit of the three structures of the square groove 31, the U-shaped baffle 5 and the mounting block 44, thereby improving the sealing of the product and strengthening the structural strength between the square groove 31, the U-shaped baffle 5 and the mounting block 44.

[0042] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0043] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-precision linear displacement eddy current sensor with a slingshot, comprising: The cover plate (1), PCB board (2), and housing (3) are sequentially covered and are characterized in that: The cover plate (1) is fixedly connected to the housing (3); One side of the housing (3) is connected to a wiring harness mechanism (4); The wiring harness mechanism (4) comprises: a wiring harness (41), a connector (43), and a mounting block (44); The connector (43) is fixedly connected to one end of the wiring harness (41); The mounting block (44) is fixedly connected to the other end of the wiring harness (41); The mounting block (44) is electrically connected to the PCB board (2).

2. The high-precision linear displacement eddy current sensor according to claim 1, characterized in that: The bottom of the housing (3) is provided with a square groove (31); A plurality of limiting holes (311) penetrating the bottom of the housing (3) are provided in the square groove (31).

3. The high-precision linear displacement eddy current sensor according to claim 2, characterized in that: The square groove (31) is provided with a U-shaped groove (32) near the bottom opening; The U-shaped groove (32) is clamped with a U-shaped baffle (5).

4. The high-precision linear displacement eddy current sensor according to claim 2, characterized in that: A plurality of guide slopes (312) are provided on the inner wall of the square groove (31) arranged in the circumferential direction.

5. The high-precision linear displacement eddy current sensor according to claim 1, wherein: A glue-dispensing groove (33) is circumferentially provided on the inner side edge of the housing (3).

6. The high-precision linear displacement eddy current sensor according to claim 1, wherein: The bottom of the housing (3) is provided with a sealing ring (6) and a sealing groove (34); The height of the sealing ring (6) is greater than the depth of the sealing groove (34).

7. The high-precision linear displacement eddy current sensor according to claim 1, wherein: The cover plate (1) is provided with buckles (11) in the circumferential direction of the side edges; A card slot (35) adapted to the buckle (11) is provided circumferentially on the outer side of the housing (3).

8. The high-precision linear displacement eddy current sensor according to claim 1, wherein: The inner surface of the shell (3) is affixed with a waterproof and breathable membrane.

9. The high-precision linear displacement eddy current sensor according to claim 1, wherein: A corrugated tube (42) is provided on the outer surface of the wiring harness (41) near the connector (43); A protective tube (45) is provided on the outer surface of one side of the wiring harness (41) close to the mounting block (44).

10. The high-precision linear displacement eddy current sensor according to any one of claims 1 to 9, characterized in that: The cover plate (1) and the outer shell (3) are fixedly connected by welding.

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