CN108771542B

CN108771542B - Probe assembly and skin detector

Info

Publication number: CN108771542B
Application number: CN201810675921.6A
Authority: CN
Inventors: 马维超; 张军国
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2022-02-18
Anticipated expiration: 2038-06-26
Also published as: CN108771542A

Abstract

The invention discloses a probe assembly and a skin detector, wherein the probe assembly comprises a front shell, a probe and a PCB (printed circuit board); the front shell is provided with a front end face and a cavity with a backward opening; the probe is arranged on the front end face and connected with the front shell, the probe comprises two sub-probes which are arranged at intervals oppositely, each sub-probe comprises a probe body and a conductive supporting leg which extends backwards from the probe body, and the tail ends of the conductive supporting legs, far away from the probe body, are respectively convexly provided with a hook part; the PCB is arranged in the accommodating cavity, a conductive sheet is arranged on the rear panel surface of the PCB, the conductive support legs penetrate through the rear end surface of the front end surface, the hook portion is connected with the PCB, and the front side surface of the hook portion is in contact with the conductive sheet. The technical scheme of the invention can improve the assembly firmness of the probe assembly.

Description

Probe assembly and skin detector

Technical Field

The invention relates to the technical field of medical beauty equipment, in particular to a probe assembly and a skin detector.

Background

At present, to skin detection appearance on the market, generally include one be used for with the probe subassembly that is detected person's skin contact, this probe subassembly includes the casing usually, install in the metal probe of casing front end terminal surface, locate the scanning board between metal probe and the casing front end terminal surface, and place the PCB board in the casing in, when the installation, the scanning board passes through the double faced adhesive tape and bonds at casing front end terminal surface, metal probe also fixes at the casing front end through the some mode of gluing that is difficult to dismantle, and two electrically conductive stabilizer blades of metal probe backward extension wear to establish behind the casing front end terminal surface with locate the conducting strip contact on the PCB board front surface in order to form complete circuit. However, in the practical use process, the probe body is small, so the probe is limited by the size of the product, the assembly strength of the metal probe and the scanning plate is difficult to ensure only by the viscosity of the double-sided adhesive tape, the scanning plate is easy to fall off, and particularly when the metal probe is contacted with the conducting strip on the PCB, the conducting strip can push the metal probe outwards, so that the metal probe is more easy to fall off.

Disclosure of Invention

The invention mainly aims to provide a probe assembly, aiming at improving the assembly firmness of the probe assembly.

In order to achieve the purpose, the probe assembly provided by the invention can be used for a skin detector and comprises a front shell, a probe and a PCB (printed circuit board); the front shell is provided with a front end face and a cavity with a backward opening; the probe is arranged on the front end face and connected with the front shell, the probe comprises two sub-probes which are arranged at intervals oppositely, each sub-probe comprises a probe body and a conductive supporting leg which extends backwards from the probe body, and the tail ends of the conductive supporting legs, far away from the probe body, are respectively convexly provided with a hook part; the PCB is arranged in the accommodating cavity, a conductive sheet is arranged on the rear panel surface of the PCB, the conductive support legs penetrate through the rear end surface of the front end surface, the hook portion is connected with the PCB, and the front side surface of the hook portion is in contact with the conductive sheet.

Optionally, the conductive legs extend backwards from the outer periphery of the rear plate surface of the probe body, the hook extends towards the conductive legs of the other probe, a first notch and a second notch which are mutually connected are arranged on the outer periphery of the PCB, and the conductive sheet is arranged adjacent to the second notch;

the PCB is arranged in the accommodating cavity and then has a state before rotation and a state after rotation formed by axial rotation, and in the state before rotation, the hook part penetrates through the front end face and then is positioned in the first notch;

in the rotated state, the conductive support leg slides into the second notch from the first notch, and the hook part is clamped in the second notch and is in contact with the conductive sheet.

Optionally, the radial depth of the first notch is greater than the radial depth of the second notch.

Optionally, a mounting hole is further formed in the PCB, and after the PCB is in the rotated state, a screw penetrates through the mounting hole to fixedly connect the PCB with the front shell.

Optionally, a conductive foam is sandwiched between the hook and the conductive sheet.

Optionally, the probe bodies are arranged in a semi-annular shape, and the inner circumferential surfaces of the two probe bodies enclose a light through hole;

the probe assembly further comprises a scanning plate, and the scanning plate is arranged between the probe body and the front end face and is exposed through the light through hole.

Optionally, a back plate surface of the probe body is provided with a limiting groove which is backwards opened towards the center of the inner circumferential surface of the probe body, and the scanning plate is embedded in the limiting groove in a matching manner;

the probe assembly further comprises a double-sided adhesive layer, and the rear plate surface of the scanning plate is bonded with the front end surface through the double-sided adhesive layer; the part of the back plate surface of the probe body, which is exposed relative to the scanning plate, is bonded with the front end surface through the double-sided adhesive layer, and the double-sided adhesive layer is provided with a position avoiding through hole for the conductive support leg to penetrate through.

Optionally, a plurality of positioning columns are convexly arranged on the front end face, and a plurality of positioning holes are formed in the double-sided adhesive layer corresponding to the positioning columns.

Optionally, a spacing bump is convexly arranged on the front end face, the spacing bump is arranged corresponding to the spacing between the opposite free ends of the two sub-probes, and a clearance gap is arranged on the scanning plate corresponding to the spacing bump;

the double-sided adhesive layer comprises two semi-annular adhesive layers which are oppositely arranged, and the interval between two opposite free ends of the two semi-annular adhesive layers can be used for the interval lug to penetrate through.

The invention also provides a skin detector which comprises a probe assembly, wherein the probe assembly comprises a front shell, a probe and a PCB (printed circuit board); the front shell is provided with a front end face and a cavity with a backward opening; the probe is arranged on the front end face and connected with the front shell, the probe comprises two sub-probes which are arranged at intervals oppositely, each sub-probe comprises a probe body and a conductive supporting leg which extends backwards from the probe body, and the tail ends of the conductive supporting legs, far away from the probe body, are respectively convexly provided with a hook part; the PCB is arranged in the accommodating cavity, a conductive sheet is arranged on the rear panel surface of the PCB, the conductive support legs penetrate through the rear end surface of the front end surface, the hook portion is connected with the PCB, and the front side surface of the hook portion is in contact with the conductive sheet.

According to the technical scheme, the hook part is convexly arranged at the tail end, far away from the probe body, of the conductive support leg of the probe, the conductive sheet is arranged on the rear plate surface of the PCB, when the conductive support leg penetrates through the front end surface of the front shell, the hook part can be connected with the PCB, and the front side surface of the hook part is in contact with the conductive sheet to form a communicated circuit. Therefore, on one hand, the movement of the probe in the forward direction is limited by the limiting and clamping action between the hook part of the conductive support leg and the PCB, so that the probe and the PCB are firmly fixed, and the assembly firmness of the probe assembly is improved; on the other hand, the hook part of the conductive support leg and the limiting clamping between the PCB boards can also ensure that the hook part and the conductive sheet are stably contacted, so that the circuit is ensured to be smooth, and the skin detector can be normally used.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an assembled probe assembly according to one embodiment of the present invention;

FIG. 2 is a top view of the probe assembly of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the probe assembly of FIG. 2 taken along the direction S1-S1;

FIG. 4 is an exploded view of the probe assembly of FIG. 1;

FIG. 5 is a top view of the probe assembly of FIG. 4 in an exploded condition;

FIG. 6 is a schematic cross-sectional view of the probe assembly of FIG. 5 taken along the direction S2-S2;

FIG. 7 is a left side view of the PCB of FIG. 1 in a pre-rotated state;

fig. 8 is a left side view of the PCB board of fig. 1 in a rotated state.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Front shell	11	Front end face
111	Positioning column	12	Containing chamber
				2	Probe head	21	Sub-probe
211	Probe body	211a	Limiting groove
				212	Conductive support leg	212a	Hook part
22	Light through hole	3	PCB board
				31	First gap	32	Second gap
33	Mounting hole	4	Scanning plate
				41	Avoiding gap	5	Screw nail
6	Double-sided adhesive layer	61	Avoiding through hole
				62	Locating hole	112	Spacing projection

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a probe assembly and a skin detector with the same.

Referring to fig. 1 to 4, in an embodiment of the present invention, the probe 2 assembly may be used in a skin test apparatus (not shown) for testing the skin condition of a subject, and includes a front housing 1, a probe 2 and a PCB 3; the front shell 1 is provided with a front end surface 11 and a cavity 12 which is opened backwards; the probe 2 is arranged on the front end face 11 and connected with the front shell 1, the probe 2 comprises two sub-probes 21 which are arranged at intervals relatively, each sub-probe 21 comprises a probe body 211 and a conductive support leg 212 which extends backwards from the probe body 211, and the tail ends, far away from the probe body 211, of the conductive support legs 212 are respectively provided with a hook part 212a in a protruding mode; the PCB 3 is disposed in the cavity 12, a conductive plate (not shown) is disposed on a rear surface of the PCB 3, the conductive leg 212 penetrates through the front end surface 11, the hook 212a is connected with the PCB 3, and a front side surface of the hook 212a contacts the conductive plate.

It should be noted that, in this embodiment, the front shell 1 is specifically cylindrical, in the assembly process of the probe 2 assembly, the conductive legs 212 of the two sub-probes 21 are first inserted through the through holes formed in the front end surface 11 of the front shell 1, so that the two probe bodies 211 are connected to the front end surface 11 of the front shell 1, then the PCB 3 is installed into the cavity 12 of the front shell 1 from the rear, and the conductive legs 212 are in contact with the conductive sheets formed on the PCB 3, one of the conductive legs 212 is connected to the positive pole of the circuit, and the other conductive leg 212 is connected to the negative pole of the circuit, so as to form a complete circuit. Here, because the probe 2 subassembly of skin detection appearance is the size is less usually, and the equipment between probe 2 and preceding shell 1 just relies on the viscidity of double faced adhesive tape just to be difficult to guarantee the intensity after the equipment, especially when probe 2 contacts with the conducting strip on the PCB board 3, the conducting strip can have an outside thrust to metal probe 2 to cause probe 2 to drop from preceding shell 1 more easily, and then make the circuit disconnection, skin detection appearance can not normal use.

In this embodiment, since the conductive leg 212 of the probe 2 is provided with the hook 212a protruding from the end far away from the probe body 211, and the conductive plate is disposed on the rear plate surface of the PCB 3, when the conductive leg 212 penetrates through the front end surface 11 of the front housing 1, the hook 212a can be connected to the PCB 3, and the front side surface of the hook 212a contacts with the conductive plate to form a connected circuit. Therefore, on one hand, the movement of the probe 2 in the forward direction is limited by the limiting and clamping action between the hook part 212a of the conductive support leg 212 and the PCB 3, so that the probe 2 and the PCB 3 are firmly fixed, and the assembly firmness of the probe 2 assembly is improved; on the other hand, the hook part 212a of the conductive leg 212 is connected with the PCB 3 in a limiting and clamping manner, so that the hook part 212a and the conductive sheet can be stably contacted, the circuit is smooth, and the skin detector can be normally used.

Specifically, referring to fig. 4 to 6, in the present embodiment, the conductive leg 212 is formed to extend backward from the outer periphery of the rear plate surface of the probe body 211, and the hook portion 212a is disposed to extend toward the conductive leg 212 of the other sub-probe 21, that is, the distal end of the conductive leg 212 is disposed in an L shape. Referring to fig. 7 and 8, the PCB 3 is provided with a first notch 31 and a second notch 32 on the outer periphery thereof, and the conductive sheet is disposed adjacent to the second notch 32. Here, since the two conductive legs 212 are symmetrically disposed in the present embodiment, two sets of the first notches 31 and the second notches 32 are also disposed, and the two sets of the notches are symmetrically disposed. After the PCB 3 is placed in the cavity 12, the PCB 3 has a state before rotation and a state after rotation formed by axial rotation, and in the state before rotation, the hook 212a is inserted into the front end surface 11 and then positioned in the first notch 31; in the state after rotation, the conductive leg 212 slides into the second notch 32 from the first notch 31, and the hook portion 212a is clamped in the second notch 32 and is in contact with the conductive sheet, so that when the PCB 3 rotates in place, the conductive leg 212 also realizes the limit clamping with the PCB 3, thereby ensuring the reliability of the probe 2 fixed on the front shell 1. However, the design is not limited to this, in other embodiments, a clamping hole may be disposed on the PCB corresponding to the conductive pin 212, and after the conductive pin 212 passes through the clamping hole, the hook portion 212a is clamped with the edge of the clamping hole, and of course, the orientation of the hook portion 212a may also be set to extend toward the conductive pin 212 away from another probe 21. However, in the technical solution of the present embodiment, when the PCB 3 is configured to be rotatably mounted, the convenience of assembling and disassembling the probe 2 assembly can be greatly improved.

Further, referring to fig. 7 and 8, in the present embodiment, the radial depth of the first notch 31 is preferably greater than the radial depth of the second notch 32. Thus, after the conductive support leg 212 penetrates through the front end surface 11 of the front shell 1, the hook portion 212a can be positioned in the avoiding space formed by the second notch 32 without excessive deformation, so that the resistance in the assembling process is reduced, and the convenience of assembling between the probe 2 and the PCB 3 is improved; then, the PCB 3 rotates, and the hook 212a slides into the second notch 32 from the first notch 31, at this time, since the probe 2 is usually made of a conductive metal material, the rigidity of the conductive leg 212 is relatively high, so that the hook 212a can be tightly clamped with the edge of the second notch 32, and the hook 212a is ensured to ensure that the contact between the hook 212a and the conductive sheet is stable. Here, the connection between the first notch 31 and the second notch 32 is preferably smoothly transited. This arrangement makes it possible to make the resistance force smaller when the conductive leg 212 slides between the first notch 31 and the second notch 32, so that the rotation of the PCB board 3 is smoother.

Further, still be equipped with mounting hole 33 on the PCB board 3, after PCB board 3 was in rotatory back state, mounting hole 33 was worn to establish by screw 5 in order to with PCB board 3 and preceding shell 1 fixed connection, so, probe 2, PCB board 3 and preceding shell 1 just can be firm connected together, and probe 2 has just more difficult having broken away from preceding shell 1. Here, it should be noted that, since the PCB board 3 is thin, the mounting hole 33 is preferably provided at the outer periphery of the PCB board 3 and is provided as a notch-shaped hole that opens outward. Of course, the PCB 3 and the front housing 1 may be connected by other means, such as but not limited to clamping, but in this embodiment, the PCB 3 is more firmly fixed in the cavity 12 of the front housing 1 by screwing the screw 5.

In the present embodiment, it is preferable that a conductive foam (not shown) is interposed between the hook portion 212a and the conductive sheet. Wherein, conductive foam can paste the leading flank of locating hook portion 212a, also can paste and establish on the conducting strip, and conductive foam can guarantee the contact stability between electrically conductive stabilizer blade 212 and the PCB board 3 to ensure that the circuit is stable, skin test appearance ability normal use.

Referring to fig. 1 and 4, in the present embodiment, the probe bodies 211 are disposed in a semi-annular shape, two free ends of one probe body 211 are opposite to two free ends of the other probe body 211, respectively, and a space is left between the two free ends of the other probe body 211 to prevent a short circuit, inner circumferential surfaces of the two probe bodies 211 enclose a light passing hole 22, and the light passing hole 22 communicates with the space between the free ends of the two probe bodies 211. In addition, the probe 2 assembly further comprises a scanning plate 4, and the scanning plate 4 is arranged between the probe body 211 and the front end face 11 and is exposed through the light through hole 22.

Referring to fig. 1, 3, 4 and 6, in the present embodiment, further, a back plate surface of the probe body 211 is provided with a limiting groove which is opened backward and toward the center of the inner circumferential surface of the probe body 211, and the scanning plate 4 is fittingly embedded in the limiting groove; of course, in other embodiments, no limiting groove may be provided, but the positioning of the limiting groove may enable the scanning board 4 to be embedded in the back plate surfaces of the two probe bodies 211 in a limiting manner, in other words, the scanning board 4 may be fixed on the front end surface 11 of the front shell 1 through the main body of the probe 2, a part of the probe body 211 may press the periphery of the scanning board 4, and the probe 2 may be firmly connected with the front shell 1 through the PCB 3, so that the positioning reliability of the scanning board 4 may be ensured.

In addition, the probe 2 assembly also comprises a double-sided adhesive layer 6, and the rear plate surface of the scanning plate 4 is bonded with the front end surface 11 through the double-sided adhesive layer 6; the exposed part of the back plate surface of the probe body 211 relative to the scanning plate 4 is bonded with the front end surface 11 through a double-sided adhesive layer 6, and the double-sided adhesive layer 6 is provided with a position avoiding through hole 61 for the conductive support leg 212 to penetrate through. Here, through the adhesive effect of double-sided adhesive layer 6, just can increase the one deck guarantee again for being connected between probe body 211 and scanning board 4 and preceding shell 1 for the equipment of probe 2 subassembly is more stable.

Further, referring to fig. 3, 4 and 6, in the present embodiment, the front end surface 11 is convexly provided with a plurality of positioning posts 111, and the double-sided adhesive layer 6 is provided with a plurality of positioning holes 62 corresponding to the positioning posts 111. Specifically, 6 positioning posts 111 are provided at intervals on the front end surface 11. It can be understood that the matching of the positioning column 111 and the positioning hole 62 can ensure the correct fitting of the double-sided adhesive layer 6 and the scanning plate 4.

Specifically, as shown in fig. 4, in the present embodiment, two spacing protrusions 112 are convexly disposed on the front end surface 11, and each spacing protrusion 112 is disposed corresponding to the spacing between the opposite free ends of the two sub-probes 21. It can be understood that, since the front housing 1 is generally formed by injection molding of a plastic material, the two sub-probes 21 can be completely separated after the insulating spacing bump 112 is disposed, so that the problem of short circuit caused by the contact between the two sub-probes 21 can be completely avoided. Correspondingly, the scanning board 4 is provided with the avoiding notch 41 corresponding to the spacing bump 112, the double-sided adhesive layer 6 includes two opposite semi-annular adhesive layers, and the spacing between the two opposite free ends of the two semi-annular adhesive layers can allow the spacing bump 112 to penetrate through, in other words, in this embodiment, the spacing bump 112 also has a certain positioning effect on the installation of the scanning board 4 and the double-sided adhesive layer 6.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A probe assembly for a skin test meter, comprising:

the front shell is provided with a front end face and a cavity which is opened backwards;

the probe is arranged on the front end face and connected with the front shell, the probe comprises two sub-probes which are arranged at intervals oppositely, each sub-probe comprises a probe body and a conductive supporting leg which extends backwards from the probe body, and the tail ends of the conductive supporting legs, far away from the probe body, are respectively convexly provided with a hook part; and the number of the first and second groups,

the PCB is arranged in the accommodating cavity, a conductive sheet is arranged on the rear surface of the PCB, the conductive support legs penetrate through the front end surface, the hook part is connected with the PCB, and the front side surface of the hook part is in contact with the conductive sheet; the conductive support legs extend backwards from the outer periphery of the rear plate surface of the probe body, the hook parts extend towards the conductive support legs of the other probe, the probe body, the conductive support legs and the hook parts are integrally arranged, a first notch and a second notch which are mutually connected are arranged on the outer periphery of the PCB, and the conductive sheets are arranged adjacent to the second notch;

in the rotated state, the conductive support leg slides into the second notch from the first notch, and the hook part is clamped in the second notch and is in contact with the conductive sheet; the radial depth of the first notch is greater than the radial depth of the second notch.

2. The probe assembly of claim 1, wherein the PCB further has a mounting hole, and after the PCB is in the rotated state, a screw is inserted through the mounting hole to fixedly connect the PCB to the front housing.

3. The probe assembly of claim 1, wherein a conductive foam is sandwiched between the hook and the conductive tab.

4. The probe assembly of any one of claims 1 to 3, wherein the probe bodies are arranged in a semi-annular shape, and the inner peripheral surfaces of the two probe bodies enclose a light through hole;

5. The probe assembly of claim 4, wherein the rear plate surface of the probe body is provided with a limiting groove which is opened backwards and towards the center of the inner circumferential surface of the probe body, and the scanning plate is fittingly embedded in the limiting groove;

6. The probe assembly of claim 5, wherein the front face has a plurality of positioning posts protruding therefrom, and the double-sided adhesive layer has a plurality of positioning holes corresponding to the positioning posts.

7. The probe assembly of claim 5, wherein the front end surface is convexly provided with a spacing bump, the spacing bump is arranged corresponding to the spacing between the opposite free ends of the two probes, and the scanning plate is provided with a clearance gap corresponding to the spacing bump;

the double-sided adhesive layer comprises two semi-annular adhesive layers which are oppositely arranged, and the interval between the opposite free ends of the two semi-annular adhesive layers can be used for the interval lug to penetrate through.

8. A skin test meter comprising a probe assembly according to any one of claims 1 to 7.