CN213460129U - Grounding mechanism and electronic device - Google Patents

Abstract

The utility model provides a grounding mechanism for connect in the earthing terminal of mainboard, grounding mechanism including connect in the elasticity ground connection spare and the electrically conductive support frame of earthing terminal, the support frame is used for supporting electron device, the support frame has ground connection portion, ground connection portion supports the top elasticity ground connection spare makes elasticity ground connection spare elastic deformation, in order to realize electron device's on the support frame ground connection. Because the support frame directly supports against the elastic grounding part and the elastic grounding part elastically deforms to be in interference fit with the grounding part, the connection between the grounding part and the elastic grounding part is reliable, and a good grounding effect is achieved. The utility model also provides an be equipped with earthing mechanism's electron device.

Description

Grounding mechanism and electronic device

Technical Field

The utility model relates to an electron device's ground connection field especially relates to a ground mechanism and be equipped with ground mechanism's electron device.

Background

The support frame and the mainboard of the electronic device of the existing electronic product such as an intelligent watch are indirectly grounded. Specifically, the supporting frame and the main board are generally connected through an earthing connecting frame and an element such as conductive foam, so as to realize earthing of the supporting frame. However, the grounding of the conventional support frame involves many conductive elements connected in series, and if the connection between two adjacent elements is not reliable, the grounding effect is affected or the grounding requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connect reliable and can satisfy the ground connection demand the ground connection mechanism, and be equipped with ground connection mechanism's electron device.

In order to solve the technical problem, the utility model provides a grounding mechanism for connect in the earthing terminal of mainboard, grounding mechanism including connect in the elasticity ground connection spare and the electrically conductive support frame of earthing terminal, the support frame is used for supporting electron device, the support frame has ground connection portion, ground connection portion supports the elasticity ground connection spare, makes elasticity ground connection spare elastic deformation, in order to realize electron device's on the support frame ground connection.

Preferably, the grounding part is a grounding piece arranged on the supporting frame, and when the grounding piece abuts against the elastic grounding piece, the grounding piece is parallel to the mainboard.

Preferably, the supporting frame includes a supporting plate and a plurality of positioning plates disposed around the supporting plate, the supporting plate and the plurality of positioning plates enclose an accommodating space for accommodating the electronic device, and the grounding portion is disposed on a side of the supporting plate away from the positioning plates.

Preferably, the grounding strip is convexly arranged on the supporting plate, and the grounding strip is perpendicular to the supporting plate.

Preferably, two opposite side edges of the supporting plate are respectively provided with two positioning plates at intervals, and the grounding part is positioned between the two positioning plates at one side edge of the supporting plate.

Preferably, fixing pieces are respectively arranged at two opposite end edges of the supporting plate and used for fixing the supporting frame.

Preferably, the elastic grounding part comprises a fixing part fixed on the main board, an abutting part abutting against the grounding part, and a connecting part connected between the fixing part and the abutting part, and the abutting part is capable of being elastically deformed by being pressed.

Preferably, the abutting portion includes a first bending section connected to the connecting portion, a second bending section connected to the first bending section and away from one end of the connecting portion, and a limiting piece connected to the second bending section and away from the first bending section, the first bending section is bent from the connecting portion to the fixing portion and the connecting portion, the second bending section is bent from the first bending section to the fixing portion and the connecting portion, and the limiting piece is slidably connected to the fixing portion.

Preferably, the fixing portion comprises a fixing piece fixedly connected to the main board and a positioning piece arranged on the side edge of the fixing piece, the positioning piece is provided with a limiting groove, a limiting bump is arranged at the position, far away from the second bending section, of the limiting piece, and the limiting bump is slidably accommodated in the limiting groove.

The utility model also provides an electron device, a serial communication port, include the shell, locate mainboard in the shell to and ground mechanism, ground mechanism including connect in the elasticity ground connection spare and the electrically conductive support frame of earthing terminal, the support frame is used for supporting electron device, the support frame has ground connection portion, ground mechanism's support frame is fixed in the inner chamber of shell, ground connection portion supports the top elasticity ground connection spare, the mainboard with the ground connection portion centre gripping of support frame elasticity ground connection spare makes elasticity ground connection spare elastic deformation, in order to realize electron device's on the support frame ground connection.

The utility model discloses an electron device is including mainboard and the ground mechanism who has the earthing terminal, ground mechanism including the electricity connect in the elasticity ground connection spare of earthing terminal and support electron device's support frame. The grounding part directly abuts against the elastic grounding part so as to realize the grounding of the electronic device on the supporting frame. Therefore, the support frame directly abuts against the elastic grounding part, and the elastic grounding part is elastically deformed and is in interference fit with the grounding part, so that the support frame and the grounding part are reliably connected, and a good grounding effect is achieved.

Drawings

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

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a main board and a supporting frame of the electronic device in fig. 1;

FIG. 3 is an enlarged view of section III of FIG. 2;

FIG. 4 is a perspective view of the resilient grounding member of FIG. 2;

FIG. 5 is an enlarged perspective view of the support frame of FIG. 2;

FIG. 6 is a schematic perspective view of the main plate and the supporting frame in FIG. 2;

fig. 7 is an enlarged view of a VII portion in fig. 6;

FIG. 8 is a schematic view of a rear structure of the main plate and the supporting frame in FIG. 6;

FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8;

FIG. 10 is an enlarged schematic view of portion X of FIG. 9;

fig. 11-12 are schematic views illustrating the process of mounting the supporting bracket and the main board in fig. 2 into the housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

In addition, the following description of the various embodiments refers to the accompanying drawings for illustrating specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the attached drawing figures and, thus, are used in a better and clearer sense to describe and understand the present invention rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic perspective view of an electronic device 100 according to an embodiment of the present invention; fig. 2 is a schematic perspective view of the main board 20 and the supporting bracket 45 of the electronic device 100 in fig. 1. The utility model discloses an electronic device 100 of one of them embodiment, include shell 10, locate mainboard 20 in the shell 10 to and ground mechanism 40, ground mechanism 40 be used for connect in mainboard 20's earthing terminal 232. The grounding mechanism 40 includes an elastic grounding member 42 electrically connected to the grounding terminal 232 and an electrically conductive supporting frame 45, wherein the supporting frame 45 is used for supporting an electronic device. The supporting frame 45 has a grounding portion 451, the supporting frame 45 and the main board 20 are both fixed in the inner cavity of the housing 10, the grounding portion 451 abuts against the elastic grounding member 42, so that the elastic grounding member 42 abuts against the grounding portion 451 in an elastically deformed manner, that is, the main board 20 and the grounding portion 451 clamp the elastic grounding member 42, so as to realize grounding of the electronic device on the supporting frame 45.

In this embodiment, the electronic device 100 may be, but is not limited to, a smart watch, a smart bracelet, a mobile phone, a tablet computer, a television, a VR head-mounted display, a vehicle-mounted display, and so on. The electronic device supported by the support 45 may be, but is not limited to, a speaker, a camera, a microphone, etc. In this embodiment, only the electronic device 100 is specifically described as the smart watch.

The utility model discloses an electronic device 100 is including mainboard 20 and the ground mechanism 40 that has earthing terminal 232, ground mechanism 40 including the electricity connect in earthing terminal 232's elasticity grounding member 42 and support electronic component's support frame 45. The grounding portion 451 directly abuts against the elastic grounding member 42 to realize the grounding of the electronic device on the supporting frame 45. Therefore, the supporting frame 45 of the present invention directly abuts against the elastic grounding member 42, and the elastic grounding member 42 elastically deforms to be in interference fit with the grounding portion 451, so that the connection between the elastic grounding member and the grounding portion is reliable, and a good grounding effect is achieved; in addition, a middle connecting element is omitted between the supporting frame 45 and the elastic grounding piece 42, the structure is simple, the number of elements is small, and the manufacturing cost is saved.

The housing 10 includes a bottom plate 12 and a peripheral wall 14 surrounding the bottom plate 12, the bottom plate 2 and the peripheral wall 14 define an inner cavity (not shown), and the main board 20 and the grounding mechanism 40 are accommodated in the inner cavity of the housing 10. The front surface of the housing 10 is provided with a display screen 16, and the display screen 16 seals an opening of the inner cavity of the housing 10. The two opposite ends of the peripheral wall 14 are respectively provided with a connecting part 17, and the connecting parts 17 are used for connecting a watchband. The peripheral wall 14 is provided with a plurality of keys for controlling or setting the electronic device 100. The peripheral wall 14 is further provided with a slot for inserting a SIM card.

As shown in fig. 2, the main board 20 includes a front surface 21 and a back surface 23, the back surface 23 of the main board 20 has at least one electrical connection terminal 232, the electrical connection terminal 232 is close to a side of the main board 20, and the elastic grounding member 42 is connected to the electrical connection terminal 232. A plurality of connection holes 212 are formed around the main board 20, and each connection hole 212 penetrates through the front surface 21 and the back surface 23. The motherboard 20 is electrically connected with electronic devices such as a speaker, a microphone, a SIM card slot, a sensor, a vibration motor, an inductor, a capacitor, a control IC, an antenna, and the like. The motherboard 20 is provided with a shielding cover, and the shielding cover is disposed on the control IC, the inductor, the capacitor and other electronic devices to prevent external electromagnetic waves from affecting the internal circuit and prevent electromagnetic waves generated by the internal electronic devices from radiating outwards. The front surface 21 is a surface of the motherboard 20 facing the light-emitting surface of the display screen 16 after being mounted in the cavity of the housing 10, and the back surface 23 is a surface of the motherboard 20 facing away from the light-emitting surface of the display screen 16 after being mounted in the cavity of the housing 10.

In other embodiments, the motherboard 20 is provided with a plurality of electrical terminals 232, each electrical terminal 232 is connected with an elastic grounding member 42, and each elastic grounding member 42 abuts against the grounding portion 451 of the supporting frame 45; these support frames 45 are used to support a speaker, a camera, a microphone, and the like, respectively.

Referring to fig. 2 to 4 together, fig. 3 is an enlarged view of a portion III in fig. 2; fig. 4 is a perspective view of the elastic grounding member 42 in fig. 2. The elastic grounding member 42 includes a fixing portion 421 fixed to the grounding end 232 of the main board 20, a top portion 423 for abutting against the grounding portion 451, and a connecting portion 425 connected between the fixing portion 421 and the top portion 423, wherein the top portion 423 is elastically deformable by being pressed. The elastic grounding member 42 is formed by bending a conductive sheet, the connecting portion 425 is generally U-shaped, the fixing portion 421 and the abutting portion 423 are located on the same side of the connecting portion 425, and a space is formed between the fixing portion 421 and the abutting portion 423. The side surface of the fixing portion 421 departing from the abutting portion 423 is attached to the electric connection end 232, specifically, the elastic grounding piece 42 is attached to the electric connection end 232 by adopting a surface assembly technology, and the fixing portion 421 is connected with the electric connection end 232 through soldering tin, so that the electric connection of the elastic grounding piece 42 and the electric connection end 232 is realized.

Specifically, the abutting portion 423 includes a first bending section 4231 connected to the connecting portion 425, a second bending section 4233 connected to one end of the first bending section 4231 far away from the connecting portion 425, and a limiting piece 4235 connected to the second bending section 4233 far away from the first bending section 4231. The first bending portion 4231 is bent from the connection portion 425 to be away from the fixing portion 421 and the connection portion 425, the second bending portion 4233 is bent from the first bending portion 4231 to be toward the fixing portion 421 and the connection portion 425, and the stopper 4235 is slidably connected to the fixing portion 421. The end of the first bending section 4231 away from the connecting part 425 is inclined to the fixing part 421, the limiting piece 4235 is inclined to the fixing part 421, and the inclination direction of the limiting piece 4235 is similar to the inclination direction of the end of the first bending section 4231 away from the connecting part 425. The spacing piece 4235 is spaced from the end of the first bending section 4231 far away from the connecting part 425.

Preferably, the fixing portion 421 includes a fixing piece 4212 fixedly connected to the main board 20 and a positioning piece 4214 disposed at a side of the fixing piece 4212, the positioning piece 4214 is provided with a limiting groove 4216, a position of the limiting piece 4235 away from the second bending section 4233 is provided with a limiting protrusion 4236, and the limiting protrusion 4236 is slidably received in the limiting groove 4216 to prevent the limiting piece 4235 from being separated from the positioning piece 4214. In this embodiment, the connecting portion 425 is connected to one end of the fixing plate 4212, two opposite sides of the fixing plate 4212 are respectively provided with a positioning plate 4214, each positioning plate 4214 is provided with a limiting groove 4216, each limiting groove 4216 extends along the length direction of the fixing plate 4212, and the two limiting grooves 4216 are arranged oppositely. The abutting portion 423 is located between the two positioning pieces 4214, two opposite sides of one end of the limiting piece 4235 away from the second bending section 4233 are respectively provided with a limiting projection 4236 in a protruding manner, and the two limiting projections 4236 are respectively slidably received in the two limiting grooves 4216. In the process of elastic deformation of the abutting portion 423, the two limiting protrusions 4236 slide along the two limiting grooves 4216 respectively.

Referring to fig. 2 and 5, fig. 5 is an enlarged schematic perspective view of the supporting frame 45 in fig. 2. In this embodiment, the grounding portion 451 is a grounding strip disposed on the supporting frame 45, when the grounding strip abuts against the elastic grounding member 42, the elastic grounding member 42 is clamped between the grounding strip and the motherboard 20, the abutting portion 423 is elastically deformed, the grounding strip is parallel to the motherboard 20, so that the abutting between the grounding strip and the elastic grounding member 42 is more reliable and the contact area between the grounding strip and the elastic grounding member 42 is larger. The support frame 45 is stamped from a conductive sheet, which may be, but is not limited to, a steel sheet or a copper sheet.

The grounding portion 451 includes a contact surface 4510, and the contact surface 4510 is configured to abut against the elastic grounding member 42. Preferably, when the contact surface 4510 abuts against the elastic grounding member 42, the contact surface 4510 is parallel to the back surface 23 of the main board 20.

The supporting frame 45 includes a supporting plate 452 and a plurality of positioning plates 453 disposed around the supporting plate 452, an accommodating space 455 for accommodating the electronic device is defined by the supporting plate 452 and the plurality of positioning plates 453, and the grounding portion 451 is disposed on a side of the supporting plate 452 away from the positioning plates 453. In the present embodiment, the supporting plate 452 is substantially rectangular, that is, the supporting plate 452 includes two opposite sides and two opposite sides, the two opposite sides have two positioning plates 453 spaced apart from each other, and the grounding portion 451 is located between the two positioning plates 453 on one side of the supporting plate 452. Fixing pieces 456 are respectively arranged at two opposite end edges of the supporting plate 452, and the fixing pieces 456 are used for fixing the supporting frame 45, namely the fixing pieces 456 are fixed on the shell 10 so that the supporting frame 45 is connected to the shell 10. The fixing plate 456 is L-shaped, and includes a fixing segment 4561 extending from the supporting plate 452 along the extending direction of the positioning plate 453, and a lug 4563 disposed at an end of the fixing segment 4561 away from the supporting plate 452, wherein the lug 4563 is provided with a through hole 4565.

Preferably, the grounding strip is perpendicular to the supporting plate 452, that is, the grounding strip and the supporting plate 452 enclose an included angle of 90 degrees, so that the grounding strip and the supporting plate 452 are connected more firmly.

Referring to fig. 6 to 10, fig. 6 is a schematic perspective assembly structure of the main board 20 and the supporting frame 45 in fig. 2; fig. 7 is an enlarged view of a VII portion in fig. 6; fig. 8 is a rear structural view of the main plate 20 and the supporting frame 20 in fig. 6; FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8; fig. 10 is an enlarged schematic view of the X portion in fig. 9. When the grounding mechanism 40 is assembled, the grounding portion 451 is abutted against the abutting portion 423, so that the abutting portion 423 is elastically deformed to abut against the grounding portion 451, that is, the grounding portion 451 and the abutting portion 423 are in interference fit. At this time, the contact surface 4510 of the grounding portion 451 reliably abuts against the second bending portion 4233, and the contact surface 4510 is parallel to the back surface 23 of the main plate 20. The first bending segment 4231 of the abutting portion 423 elastically deforms towards the fixing piece 4212, the limiting projection 4236 of the limiting piece 4235 slides towards one end close to the connecting portion 425 in the corresponding limiting groove 4216, and the limiting piece 4235 is closer to the fixing piece 4212, so that the abutting portion 423 has strong elasticity and firmly abuts against the grounding portion 451, and the abutting portion 423 is prevented from being separated from the grounding portion 451; even if the support frame 45 is loosened, a small amount of displacement occurs between the grounding portion 451 and the elastic grounding member 42, and the abutting portion 423 can still elastically abut against the grounding portion 451 after being partially elastically restored, so that the grounding portion 451 and the abutting portion 423 are continuously in interference fit.

Referring to fig. 11-12 together, fig. 11-12 are schematic views illustrating a process of installing the supporting frame 45 and the main board 20 in the housing 10 in fig. 2. Firstly, the supporting frame 45 is assembled to the inner cavity of the housing 10, specifically, the supporting frame 45 is placed in the inner cavity, so that the supporting frame 45 is positioned on the bottom plate 12 close to the positioning plate 453 of the grounding part 451, the fixing plate 456 is attached to the inner surface of the peripheral wall 14, and the supporting frame 45 is screwed to the housing 10 after being respectively inserted into the two through holes 4565 of the supporting frame 45 through two locking members such as screws; at this time, the grounding portion 451 is close to the bottom plate 12 of the housing 10, and the contact surface 4510 faces the opening of the cavity of the housing 10. The back 23 of the main board 20 faces the inner cavity of the housing 10, so that the elastic grounding element 42 on the main board 20 faces the grounding portion 451, and the main board 20 is placed in the inner cavity along a direction perpendicular to the bottom plate 12, until the elastic grounding element 42 on the main board 20 abuts against the grounding portion 451, that is, the abutting portion 423 abuts against the contact surface 4510. The locking member such as screw is inserted into the connecting holes 212 of the main board 20 and is locked to the bottom plate 12 of the housing 10. At this time, the abutting portion 423 elastically deforms to abut against the grounding portion 451, that is, the abutting portion 423 is pressed by the main board 20 and the grounding portion 451, and the grounding portion 451 and the abutting portion 423 are in interference fit. Therefore, the connection between the grounding portion 451 and the abutting portion 423 is reliable, the grounding effect is improved, and the signal radiation and receiving efficiency of the antenna on the main board 20 can be improved. In addition, the grounding mechanism 40 is easy to install, that is, after the supporting frame 45 is assembled, the elastic grounding member 42 of the main board 20 is pressed on the grounding part 451, so that the operation is simple, and the assembly efficiency is improved.

In other embodiments, the elastic grounding element 42 on the main board 20 may be replaced by a conductive foam, a conductive sponge, a conductive silicone, or the like.

The above is an implementation manner of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principles of the embodiments of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (10)

1. The grounding mechanism is used for being connected with a grounding end of a mainboard and is characterized by comprising an elastic grounding part and a conductive support frame, wherein the elastic grounding part is connected with the grounding end, the support frame is used for supporting an electronic device, the support frame is provided with a grounding part, and the grounding part is abutted against the elastic grounding part to enable the elastic grounding part to be elastically deformed so as to realize the grounding of the electronic device on the support frame.

2. The grounding mechanism as claimed in claim 1, wherein the grounding portion is a grounding plate disposed on the supporting frame, and the grounding plate is parallel to the main board when the grounding plate abuts against the elastic grounding member.

3. The grounding mechanism as claimed in claim 2, wherein the supporting frame includes a supporting plate and a plurality of positioning plates disposed around the supporting plate, the supporting plate and the plurality of positioning plates define a receiving space for receiving the electronic device, and the grounding portion is disposed on a side of the supporting plate away from the positioning plates.

4. The grounding mechanism of claim 3, wherein the grounding plate is protruding from the support plate, and the grounding plate is perpendicular to the support plate.

5. The grounding mechanism as claimed in claim 3, wherein the supporting plate has two spaced positioning plates on opposite sides thereof, and the grounding portion is located between the two positioning plates on one side of the supporting plate.

6. The grounding mechanism as set forth in claim 3, wherein fixing pieces are respectively provided at opposite ends of the supporting plate for fixing the supporting frame.

7. The grounding mechanism as claimed in claim 1, wherein the elastic grounding member includes a fixing portion fixed to the main board, an abutting portion abutting against the grounding portion, and a connecting portion connected between the fixing portion and the abutting portion, and the abutting portion is elastically deformable by being pressed.

8. The grounding mechanism of claim 7, wherein the abutting portion includes a first bending portion connected to the connecting portion, a second bending portion connected to an end of the first bending portion away from the connecting portion, and a limiting piece connected to the second bending portion away from the first bending portion, the first bending portion is bent from the connecting portion to the fixing portion and the connecting portion, the second bending portion is bent from the first bending portion to the fixing portion and the connecting portion, and the limiting piece is slidably connected to the fixing portion.

9. The grounding mechanism as set forth in claim 8, wherein the fixing portion comprises a fixing plate fixedly connected to the main board and a positioning plate disposed on a side of the fixing plate, the positioning plate has a limiting groove, the limiting plate has a limiting protrusion at a position away from the second bending portion, and the limiting protrusion is slidably received in the limiting groove.

10. An electronic device, comprising a housing, a main board disposed in the housing, and the grounding mechanism as claimed in any one of claims 1 to 9, wherein the supporting frame of the grounding mechanism is fixed in the inner cavity of the housing, the elastic grounding member of the grounding mechanism is connected to the grounding end of the main board, and the elastic grounding member is clamped between the main board and the grounding portion of the supporting frame.

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