CN212626184U

CN212626184U - Elastic sheet for radio frequency signal transmission

Info

Publication number: CN212626184U
Application number: CN202020360692.1U
Authority: CN
Inventors: 梁申程; 刘明生
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2021-02-26
Anticipated expiration: 2030-03-20

Abstract

A spring plate for radio frequency signal transmission comprises a base plate, a tensioning portion formed by reversely bending one end of the base plate, a suction portion formed above the base plate by extending from the tensioning portion, an elastic arm formed by extending the suction portion obliquely upwards and a supporting arm formed by bending and extending the elastic arm towards the base plate, wherein the suction portion is formed by obliquely and obliquely upwards extending at a certain angle with the plane where the base plate is located, and a joint portion is formed at the joint of the suction portion and the elastic arm. The elastic sheet has better radio frequency transmission capability.

Description

Elastic sheet for radio frequency signal transmission

Technical Field

The present invention relates to the field of electrical connectors, and more particularly, to a resilient piece for rf signal transmission.

Background

The elastic sheet product is widely applied to the field of electronic equipment (such as smart phones) for connecting various signals, for example, the electronic equipment such as a vibration motor is connected to a circuit board, and the elastic sheet product is also used for being fixed on a printed circuit board, and an elastic contact antenna (part of a mobile phone antenna is directly formed by a metal shell) is used for transmitting an antenna radio frequency signal to the printed circuit board. Referring to fig. 1, a conventional spring plate 10 generally includes a substrate 11 for soldering, a tension portion 12 formed by bending an end of the substrate 11 in opposite directions, a horizontal portion 13 extending from the tension portion 12 in parallel above the substrate 11, an elastic arm 14 extending from a free end of the horizontal portion 13 in an inclined manner, and a support arm 16 extending from the elastic arm 14 toward the substrate 11. In the working state, the top end of the elastic arm 14 is pressed down by the object to be contacted, the supporting end 163 of the supporting arm 16 slides on the upper surface of the substrate 11 towards the tensioning part 12, and finally, in the working state of crimping, at this time, the joint 18 of the horizontal part 13 and the elastic arm 14 is located substantially above the supporting end 163, and the gap is very small, at this time, interference of radio frequency signals is caused, and normal transmission of a radio frequency loop is affected.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a spring plate for transmitting rf signals, which has a low height and is suitable for transmitting rf signals.

In order to solve the technical problem, the application provides a shell fragment for radio frequency signal transmission, include the base plate, certainly the tensioning portion that base plate one end reverse bend formed, certainly tensioning portion extends to be formed in the absorption portion of base plate top, certainly the elastic arm that the oblique upwards extension of absorption portion formed and certainly the elastic arm orientation the support arm that the base plate direction was bent and was extended and form, absorption portion with the base plate place plane is certain angle slant slope extension formation, absorption portion with the elastic arm junction is formed with the joint portion.

Preferably, the extending inclination angle of the suction part is 0.1 to 4 degrees.

Preferably, the extending inclination angle of the suction part is 0.5 to 2 degrees.

Preferably, the extending inclination angle of the suction portion is 1.5 degrees.

Preferably, the top of the elastic arm is bent towards the substrate to form an arc-shaped bending part, the arc-shaped bending part is upwards stamped and protrudes to form a contact part, and the contact part is contacted with an object to be connected and is pressed downwards.

Preferably, the support arm includes a first support arm portion extending from the arc-shaped bent portion toward the elastic arm, a second support arm portion bent from the first support arm portion toward the substrate and extending therefrom, and a support end portion formed at a free end of the second support arm portion.

Preferably, when the contact portion is pressed down by the object to be contacted, the supporting end portion abuts against the substrate and slides towards the tensioning portion.

Preferably, when the elastic sheet is in a working state, a gap exists between the combining part and the supporting end part.

Preferably, the support end portion protrudes outward at two lateral sides to form a pre-pressing end portion, the elastic sheet further includes wings bent upward from two lateral sides of the base plate and located at two lateral sides of the support arm, pre-pressing cavities are formed in the positions, corresponding to the pre-pressing end portions, of the wings, and the support end portion extends into the pre-pressing cavities.

Preferably, when the elastic sheet is in a non-working state, the distance from the contact part to the bottom surface of the substrate is 1.1mm, and when the elastic sheet is in a working state, the distance from the contact part to the bottom surface of the substrate is 0.4 mm.

This application shell fragment for radio frequency signal transmission is through inciting somebody to action the portion of absorbing upwards extends the formation with certain contained angle slant for under operating condition, support the tip with keep great distance between the joint portion, avoid radio frequency signal's transmission to receive the interference, make the elastic force of elastic arm obtain the reinforcing simultaneously and can obtain more stable electrical contact performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is a side view of a prior art spring in a natural state and in a working state;

fig. 2 is a perspective view of the spring plate for rf signal transmission according to the present application;

FIG. 3 is a cross-sectional view of the spring plate for RF signal transmission according to the present invention;

fig. 4 is a side view of the elastic sheet for rf signal transmission in a natural state and in a working state;

fig. 5 is a simulation diagram of a relationship between an elastic force and a displacement of an elastic arm when the conventional elastic sheet and the elastic sheet of the present application are switched between a non-operating state and an operating state.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.

Referring to fig. 2 and 3, the elastic sheet 20 for rf signal transmission of the present application includes a substrate 21 soldered on a printed circuit board, a tensioning portion 22 formed by bending an end of the substrate 21 in a reverse direction, a suction portion 23 extending from the tensioning portion 22 to above the substrate 21, an elastic arm 24 extending from the suction portion 23 in an oblique direction, and a supporting arm 26 formed by bending and extending a free end of the elastic arm 24 toward the substrate 21.

The sucking part 23 extends at a certain angle with the substrate 21, the extending angle a is 0.1 to 4 degrees, and the extending angle is an included angle between the sucking part 23 and the substrate when the elastic sheet is in a non-working state as shown in fig. 3. The extension angle is preferably 0.5 to 2 degrees; more preferably, the extension angle is 1.5 degrees.

The suction part 23 is used for sucking the elastic sheet 20 through an air nozzle when the patch is automatically assembled. A joint 28 is formed at the joint of the suction portion 23 and the elastic arm 24, an arc-shaped bending portion 25 is formed at the top end of the elastic arm 24, and a contact portion 251 protruding by punching is formed on the outer surface of the arc-shaped bending portion 25. The supporting arm 26 includes a first supporting arm portion 261 extending from the arc-shaped bending portion 25 toward the elastic arm 24, a second supporting arm portion 262 extending from a lower end of the first supporting arm portion 261 toward the substrate 21, a supporting end portion 263 formed at a distal end of the second supporting arm portion 262, and a pre-pressing end portion 264 protruding from two sides of the supporting end portion.

The two lateral sides of the base plate 21 are bent upwards to form wings 27, pre-pressing cavities 271 are formed in the wings 27, and the pre-pressing end portions 264 enter the pre-pressing cavities 271 for pre-pressing and limiting so as to ensure that the elastic sheet 20 keeps a predetermined height in a non-working state.

As shown in fig. 1, fig. 4 and fig. 5, compared to the prior art spring plate 10, in the working state of the spring plate 20 after being pressed down, the distance between the combining portion 28 and the supporting end portion 263 is much greater than the distance between the combining portion 18 and the supporting end portion 163 of the prior art spring plate, so that the transmission of the rf signal is prevented from being interfered, and the influence on the normal transmission of the rf signal is reduced.

Use prior art shell fragment 10 and this application shell fragment 20's product height H to be 1.1mm, and product height H under the operating condition is 0.4mm (the height of flap 27) for example, and the relation between emulation simulation product elastic force and the elastic arm pushes down the height, and the horizontal axis pushes down the height for the elastic arm, and the unit is mm, and the vertical axis is the elastic force that the elastic arm provided, and the unit is N: A. curve B is this application shell fragment 20 respectively and pushes down and the elastic recovery curve, and the C, D curve is prior art shell fragment 10 respectively and pushes down and the elastic recovery curve, can clearly be seen from emulation simulation diagram, the portion of absorbing 23 of this application with the base plate 21 is certain angle extension, not only can effectively increase the joint portion 28 with support the distance between the tip 263, simultaneously, under whole operating condition, the elastic force of elastic arm 24 all is superior to the elastic force of prior art shell fragment 10.

This application shell fragment 20 for radio frequency signal transmission is through with the portion 23 of absorbing extends the formation upwards with certain contained angle slant for under operating condition, support tip 263 with keep great distance between the joint portion 28, avoid radio frequency signal's transmission to receive the interference, make the elastic force of elastic arm 24 obtain the reinforcing simultaneously and can obtain more stable electrical contact performance.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A kind of radio frequency signal transmission uses the shell fragment, including the plaque, from the straining part that one end of said plaque bends and forms reversely, extend form said straining part take up part above said plaque, take up part elastic arm that form extend form and bend and extend support arm that form from said elastic arm towards said plaque direction, characterized by that, said take up part take up form with said plaque place plane form certain angle incline tilt extend form, take up part and said elastic arm junction form binding site;

the top of the elastic arm faces the substrate and is bent to form an arc-shaped bending part, and the support arm comprises a first support arm part and a second support arm part, wherein the arc-shaped bending part faces the elastic arm and extends to form the first support arm part, and the first support arm part faces the substrate and is bent and extends to form the second support arm part.

2. The elastic sheet for transmitting radio frequency signals according to claim 1, wherein the extending inclination angle of the suction portion is 0.1 to 4 degrees.

3. The elastic sheet for transmitting radio frequency signals according to claim 2, wherein the extending inclination angle of the suction portion is 0.5 to 2 degrees.

4. The radio frequency signal transmission elastic sheet according to claim 3, wherein an extension inclination angle of the suction portion is 1.5 degrees.

5. The radio frequency signal transmission elastic sheet according to claim 4, wherein the arc-shaped bending portion is formed by punching and protruding upward to form a contact portion, and the contact portion is contacted with an object to be connected and pressed downward.

6. The radio frequency signal transmission spring as claimed in claim 5, wherein said support arm further includes a support end portion formed at a free end of said second support arm portion.

7. An elastic piece for transmitting RF signals according to claim 6, wherein when said elastic piece is in working condition, said supporting end portion is abutted against said substrate, and a gap is formed between said combining portion and said supporting end portion.

8. The shrapnel for transmitting radio frequency signals according to claim 6, wherein the lateral two sides of the supporting end part are protruded outwards to form a prepressing end part, the shrapnel further comprises wings bent upwards from the lateral two sides of the base plate and positioned at the lateral two sides of the supporting arm, the wings are provided with prepressing cavities corresponding to the prepressing end part, and the supporting end part extends into the prepressing cavities.

9. An elastic sheet according to claim 8, wherein when the elastic sheet is in a non-operating state, the distance from the contact portion to the bottom surface of the substrate is 1.1mm, and when the elastic sheet is in an operating state, the distance from the contact portion to the bottom surface of the substrate is 0.4 mm.