CN216815743U

CN216815743U - Passive waterproof precise SMD micro-sensor

Info

Publication number: CN216815743U
Application number: CN202220649822.2U
Authority: CN
Inventors: 陈维钩; 季斌斌
Original assignee: Wenzhou Taixin Electronics Co ltd
Current assignee: Wenzhou Taixin Electronics Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-06-24
Anticipated expiration: 2032-03-23

Abstract

The utility model provides a waterproof accurate SMD fine motion sensor of passive form, which comprises a housin, open the casing inboard has the mounting groove, the first electrode that is located the casing is installed to mounting groove upper end bottom, the second electrode that is located the casing is installed to mounting groove lower extreme bottom, the mounting groove inboard is equipped with the accurate fine motion spring of fixed connection in second electrode front side, first electrode is less than the setting of second electrode, casing front side sealing connection has the apron that covers in the mounting groove outside, first electrode and second electrode all seal the setting in the casing, and the casing effectively seals the mounting groove of inboard through the apron, make the device's leakproofness good, make this fine motion sensor's waterproof, it is dustproof effectual.

Description

Passive waterproof precise SMD micro-sensor

Technical Field

The utility model relates to the technical field of vibration sensors, in particular to a passive waterproof precise SMD micro-sensor.

Background

At present, a micro-motion sensor is a sensor for converting a mechanical signal of vibration into an electric signal and sending the electric signal to a circuit for processing, is widely applied to toys, small household appliances and various anti-theft safety products, and has the problems of low sensitivity, complex structure and the like in a part of products on the market which are indispensable to electronic products. And the shock switch on the market is big, the price is high, because the microsensor who adopts on the market all adopts the form of dual in-line package, need insert the socket of circuit board through the manual work with the pin of shock switch in the production for the installation of shock switch is difficult to mechanical assembly line operation, production labour height, and current microsensor's response part exposes outside mostly, makes the waterproof nature of sensor relatively poor, and the sensitivity of sensor is not high.

Disclosure of Invention

The passive waterproof precise SMD micro-sensor is reasonable and simple in structural design, high in sensitivity and small in size, and can realize SMD surface mounting assembly line mechanical production.

The utility model adopts the technical scheme for solving the technical problems that: the passive waterproof precise SMD micro-sensor comprises a shell, wherein a mounting groove is formed in the inner side of the shell, a first electrode positioned in the shell is mounted at the bottom of the upper end of the mounting groove, a second electrode positioned in the shell is mounted at the bottom of the lower end of the mounting groove, a precise micro-spring fixedly connected to the front side of the second electrode is arranged on the inner side of the mounting groove, the first electrode is lower than the second electrode, the front side of the shell is hermetically connected with a cover plate covering the outer side of the mounting groove, the first electrode and the second electrode are hermetically arranged in the shell, and the shell effectively seals the mounting groove on the inner side through the cover plate, so that the device has good sealing performance, good waterproof and dustproof effects, simple structure for realizing vibration induction, less loss of force during transmission, high sensitivity, smaller size of the precise micro-spring inside, obvious induction of vibration force due to the smaller size, the device is high in sensitivity, the rear end of the shell is provided with the first electrode and the second electrode, the device does not need to be installed in a mode that a pin is inserted into a socket, mechanical production can be achieved through an SMD surface mounting assembly line, the precise micro-spring is fixed at the front end of the second electrode, and the size of the vibration force triggering the vibration sensor can be adjusted only by adjusting the relative height of the first electrode and the second electrode, the line diameter of the precise micro-spring and the length of the precise micro-spring.

For further improvement, the projection distance of the front side plane of the contact electrode and the front side plane of the second electrode in the horizontal direction is less than 5 microns, and the distance between the contact electrode and the second electrode in the horizontal direction is small, so that the precise micro-spring can be contacted with the contact electrode to realize circuit communication after sensing small vibration, and the micro-sensor is sensitive in induction.

Further perfecting, the back side of the upper end of the shell is provided with a first electrode groove, the bottom of the mounting groove is provided with a contact groove connected with the first electrode groove, a first electrode is fixedly connected to the inner side of the first electrode groove, the lower end of the first electrode is provided with a contact electrode which is positioned in the contact groove and corresponds to the precise micro-spring, the mounting groove is provided with the first electrode groove and the contact groove positioned at the lower end of the first electrode groove, the back side of the lower end of the shell is provided with a second electrode groove, the upper end of the second electrode groove is communicated with the mounting groove, the second electrode is fixedly connected to the inner side of the second electrode groove, the contact electrode is lower than the second electrode, so that the first electrode and the second electrode can be conveniently mounted, the first electrode is vertically inserted into the first electrode groove, the contact electrode is smoothly clamped into the inner side of the contact groove, the second electrode is vertically inserted into the second electrode groove, the electrode groove is provided, and the first electrode and the second electrode are firmly fixed, and the electrode groove is sealed by the electrode, so that the micro-motion sensor has good sealing property.

Further perfect, the mounting groove is including setting up the spacing groove in the accurate fine motion spring lower extreme outside, the spacing groove sets up to the inboard slope gradually backward in the past, be equipped with the spacing groove, the assembly and the installation of the accurate fine motion spring of being convenient for, when assembling at the device, only need put into the mounting groove with accurate fine motion spring, the lower extreme of accurate fine motion spring then under the effect of spacing groove smooth spacing put at the central point of second electrode front end, and then the electrically conductive glue of rethread fixes accurate fine motion spring at second electrode front end can, make accurate fine motion spring's rigidity accurate.

The utility model has the beneficial effects that: the utility model has reasonable and simple structural design and high sensitivity, the first electrode and the second electrode are arranged in the shell in a sealing way, the shell effectively seals the mounting groove at the inner side through the cover plate, the sealing performance of the device is good, the waterproof and dustproof effects of the micro-sensor are good, the structure for realizing vibration induction of the device is simple, the loss of force during transmission is small, the sensitivity is high, the size of an internal precise micro-spring is small, the induction of the vibration force is obvious due to the small size, the sensitivity of the device is high, the rear end of the shell is provided with the first electrode and the second electrode for mounting connection, the device does not need to be mounted in a mode that pins are inserted into a socket, the mechanical production can be realized through an SMD surface mounting assembly line, the precise micro-spring is fixed at the front end of the second electrode, and only needs to adjust the relative heights of the first electrode and the second electrode, The line diameter of the precise micro-motion spring and the length of the precise micro-motion spring can adjust the vibration force of the trigger vibration sensor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a rear view of the present invention;

fig. 4 is a cross-sectional view of the present invention.

Description of reference numerals: 1. the device comprises a shell, 2, a mounting groove, 3, a first electrode, 4, a second electrode, 5, a precise micro-spring, 6, a cover plate, 7, a first electrode groove, 8, a contact groove, 9, a contact electrode, 10, a second electrode groove, 11 and a limiting groove.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

with reference to the accompanying drawings: in the embodiment, the passive waterproof precise SMD micro-sensor comprises a shell 1, wherein a mounting groove 2 is formed in the inner side of the shell 1, a first electrode 3 positioned in the shell 1 is mounted at the bottom of the upper end of the mounting groove 2, a second electrode 4 positioned in the shell 1 is mounted at the bottom of the lower end of the mounting groove 2, a precise micro-spring 5 fixedly connected to the front side of the second electrode 4 is arranged in the mounting groove 2, the first electrode 3 is arranged lower than the second electrode 4, a cover plate 6 covering the outer side of the mounting groove 2 is hermetically connected to the front side of the shell 1, the first electrode 3 and the second electrode 4 are both hermetically arranged in the shell 1, the shell 1 effectively seals the mounting groove 2 in the inner side through the cover plate 6, so that the device has good sealing performance and good waterproof and dustproof effects, as shown in figure 4, the projection distance of the front plane of a contact electrode 9 and the front plane of the second electrode 4 in the horizontal direction is less than 5 microns, the distance between the contact electrode 9 and the second electrode 4 in the horizontal direction is small, so that the precision micro-spring 5 can be in contact with the contact electrode 9 to realize the communication of a circuit after sensing small vibration, and the micro-sensor is sensitive in sensing.

As shown in fig. 2, 3 and 4, a first electrode groove 7 is formed at the rear side of the upper end of the casing 1, a contact groove 8 connected with the first electrode groove 7 is formed at the bottom of the mounting groove 2, the first electrode 3 is fixedly connected to the inner side of the first electrode groove 7, a contact electrode 9 which is positioned in the contact groove 8 and corresponds to the precise micro spring 5 is arranged at the lower end of the first electrode 3, the first electrode groove 7 and the contact groove 8 positioned at the lower end of the first electrode groove 7 are arranged, as shown in fig. 3, a second electrode groove 10 is formed at the rear side of the lower end of the casing 1, the upper end of the second electrode groove 10 is communicated with the mounting groove 2, the second electrode 4 is fixedly connected to the inner side of the second electrode groove 10, the contact electrode 9 is lower than the second electrode 4, so that the first electrode 3 and the second electrode 4 can be conveniently mounted by only vertically inserting the first electrode 3 into the first electrode groove 7, the contact electrode 9 can be smoothly clamped into the inner side of the contact groove 8, with the vertical second electrode groove 10 that inserts of second electrode 4 can, and the electrode groove seals through the electrode, make this fine motion sensor's leakproofness good, as shown in fig. 2, mounting groove 2 is including setting up the spacing groove 11 in the 5 lower extreme outsides of accurate fine motion spring, spacing groove 11 sets up to the inboard slope gradually backward in the past, be equipped with spacing groove 11, be convenient for accurate fine motion spring 5's assembly and installation, when assembling at the device, only need put into mounting groove 2 with accurate fine motion spring 5, accurate fine motion spring 5's lower extreme then under spacing groove 11's effect smooth spacing central point at second electrode 4 front end puts, and then the rethread electrically conductive glue with accurate fine motion spring 5 fix at second electrode 4 front end can, make accurate fine motion spring 5's position fix accurate.

During assembly, a first electrode 3 and a second electrode 4 are respectively inserted into a first electrode groove 7 and a second electrode groove 10 in the vertical direction, a precise micro-spring 5 is placed into the mounting groove 2, the lower end of the precise micro-spring 5 is smoothly limited at the central position of the front end of the second electrode 4 under the action of a limiting groove 11, the precise micro-spring 5 is fixed at the front end of the second electrode 4 through conductive adhesive, finally a cover plate 6 is fixed at the outer side of the front end of the shell 1, and finally the micro-sensor can be mounted through the exposed first electrode 3 and the exposed second electrode 4.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a waterproof accurate SMD fine motion sensor of passive form, includes casing (1), characterized by: casing (1) inboard is opened there is mounting groove (2), and mounting groove (2) upper end bottom is installed and is located first electrode (3) in casing (1), and mounting groove (2) lower extreme bottom is installed and is located second electrode (4) in casing (1), mounting groove (2) inboard is equipped with accurate fine motion spring (5) of fixed connection in second electrode (4) front side, first electrode (3) are less than second electrode (4) and set up, casing (1) front side sealing connection has the cover and is in apron (6) in the mounting groove (2) outside.

2. The passive, waterproof and precise SMD micro sensor as claimed in claim 1, wherein: casing (1) upper end rear side is opened there is first electrode tank (7), mounting groove (2) bottom open have with contact tank (8) that first electrode tank (7) are connected and are set up, first electrode (3) fixed connection is inboard in first electrode tank (7), first electrode (3) lower extreme is equipped with and is located in contact tank (8) and with contact electrode (9) that accurate fine motion spring (5) correspond.

3. The passive waterproof precision SMD micro sensor of claim 2 wherein: casing (1) lower extreme rear side is opened there is second electrode groove (10), second electrode groove (10) upper end with mounting groove (2) intercommunication sets up, second electrode (4) fixed connection be in second electrode groove (10) are inboard, contact electrode (9) are less than second electrode (4) and set up.

4. The passive waterproof precision SMD micro-sensor as claimed in claim 3, wherein: the projection distance of the front plane of the contact electrode (9) and the front plane of the second electrode (4) in the horizontal direction is less than 5 microns.

5. The passive, waterproof and precise SMD micro sensor as claimed in claim 1, wherein: mounting groove (2) are including setting up spacing groove (11) in accurate fine motion spring (5) lower extreme outside, spacing groove (11) are in the past backward gradually to inboard slope setting.