Magnetostrictive displacement sensor of the aluminum housing type
By employing an aluminum-cased magnetostrictive displacement sensor with a snap-fit structure and a non-contact measurement design, the problems of low assembly efficiency and short lifespan of the levitation magnet are solved, achieving efficient, stable, and durable displacement measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING TEBEIFU ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnetostrictive displacement sensors have low assembly efficiency and short lifespan for contact measurement with suspended magnets.
It adopts an aluminum housing design and connects the sensitive component bracket to the signal board through a snap-fit structure, eliminating the need for bolt fixing. Combined with non-contact measurement using a levitating magnet, it uses shielding tubes and insulating tubes to protect the magnetostrictive sensing element, enabling continuous non-contact measurement.
It improves assembly efficiency and measurement accuracy, extends the service life of the sensor, is suitable for measurement in confined spaces, and has high stability and high reliability.
Smart Images
Figure CN224517663U_ABST
Abstract
Claims
1. An aluminum-housed magnetostrictive displacement sensor, characterized by, include: The outer casing includes a front cover, a rear cover, and a main body shell disposed between the front cover and the rear cover, wherein the front cover, the rear cover, and the main body shell form an installation cavity; A signal board is installed in the mounting cavity, and the signal board is provided with a first engaging structure. A sensitive component bracket is mounted on the signal board and located within the mounting cavity, and the sensitive component bracket is provided with a first mounting groove; The sensitive element assembly is installed in the first mounting slot; The sensitive component bracket is further provided with a second engaging structure, which can engage with the first engaging structure to connect the sensitive component bracket to the signal board.
2. The magnetostrictive displacement sensor of claim 1, wherein Also includes: A fixing groove is provided on two opposite side walls of the main body shell and extends along the length direction of the aluminum shell type magnetostrictive displacement sensor, and the signal board is supported in the fixing groove.
3. The magnetostrictive displacement sensor of claim 1, wherein the aluminum housing is formed of an aluminum alloy. Also includes: A levitating magnet is mounted on the device under test. The sensitive element assembly can generate a sensing signal based on the magnetic field of the levitating magnet and transmit the sensing signal to the signal board.
4. The magnetostrictive displacement sensor of claim 1, wherein the aluminum housing is formed of an aluminum alloy. The sensing element assembly includes a magnetostrictive sensing element, and the aluminum-cased magnetostrictive displacement sensor further includes: The second mounting groove is provided on the main body shell and extends along the length direction of the aluminum shell type magnetostrictive displacement sensor; An insulating tube, wherein the magnetostrictive sensing element is installed inside the insulating tube; A shielding tube is fitted over the outside of an insulating tube to shield electromagnetic waves and electric fields. A shielding tube bracket is installed in the second mounting slot, and the shielding tube is installed on the shielding tube bracket.
5. The magnetostrictive displacement sensor of claim 4, wherein the aluminum housing is formed of an aluminum alloy. The number of shielding tube supports is multiple.
6. The magnetostrictive displacement sensor of claim 1, wherein the aluminum housing is formed of an aluminum alloy. Also includes: A sliding groove is provided on the outer surface of the main body shell and extends along the length direction of the aluminum shell type magnetostrictive displacement sensor; The fixing component is slidably mounted on the slide groove and is used to fix the aluminum shell type magnetostrictive displacement sensor on the mounted component.
7. The magnetostrictive displacement sensor of claim 1, wherein the aluminum housing is formed of an aluminum alloy. The front end cover is provided with a first mounting hole, and the aluminum shell type magnetostrictive displacement sensor further includes: A male connector is installed in the first mounting hole. One end of the male connector is connected to the signal board, and the other end is located on the outside of the housing for external power supply and signal transmission.
8. The magnetostrictive displacement sensor of claim 7, wherein the aluminum housing is formed of an aluminum alloy. Also includes: At least two bosses are disposed in the first mounting hole, and the male connector is mounted on the first mounting hole and abuts against the at least two bosses.
9. The aluminum-cased magnetostrictive displacement sensor according to claim 1, characterized in that, Also includes: A support platform is provided on the end face of the front end cover near the rear end cover. A locking hole is provided on the support platform, and one end of the signal board is provided on the support platform. A locking element can pass through the signal plate and engage with the locking hole to fix the signal plate to the support platform.
10. The magnetostrictive displacement sensor of claim 1, wherein the aluminum housing is formed of an aluminum alloy. Also includes: A first sealing element is installed between the front end cover and the main body shell; The second seal is installed between the rear end cover and the main body shell.