High-strength positive-pressure elastic sheet

Abstract

The utility model discloses a high-strength positive pressure elastic sheet which comprises an elastic sheet base and an elastic sheet body. Wherein the elastic sheet base comprises a bottom plate and protective side walls formed by vertically bending the two sides of the bottom plate upwards, and supporting sliding tables which protrude inwards and are parallel to the bottom plate are formed in the middles of the protective side walls; the elastic piece body comprises a tensioning part formed by reversely bending and extending from the rear end of the bottom plate, an elastic arm formed by obliquely bending and extending upwards from the tail end of the tensioning part, and a supporting part formed by reversely bending from the tail end of the elastic arm and extending towards the bottom plate, and the lower end of the supporting part can slide front and back along the supporting sliding table. According to the high-strength positive-pressure elastic sheet provided by the utility model, the protective side walls on the two sides are punctured and stretched from outside to inside to provide simple support for the elastic sheet main body and allow the elastic sheet main body to slide, so that the blocking arms of the elastic sheet are prevented from being exposed out of the protective side walls, the anti-hanging and anti-scraping performance of the elastic sheet main body is improved, the strength of the protective side walls is effectively improved, and the service life of the elastic sheet main body is prolonged. The elasticity and the service life of the elastic sheet are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of the elastic pieces of electric connectors, and particularly relates to a high-strength positive pressure elastic piece. Background Art

[0002] In the field of electric connectors, elastic pieces have been widely used in the field of electronic communication devices. For example, they are used to transmit antenna signals or signals between electronic components and the main board, and to contact the middle frame or the rear shell. As a key elastic element, the performance of the elastic piece directly affects the stability of the device. As Figure 5 shown, most of the traditional elastic piece structures are similar to the patent "CN207781953U Elastic Piece and Terminal with the Same". The two side retaining walls generally adopt a windowed design. The simply supported side arms of the elastic piece are placed on the edge of the window for limiting. When the elastic piece is compressed and deformed, the retaining arms can slide and float within a certain range under the support of the lower edge of the window. However, with the development of industrial automation, precision machinery, and high-end electronic devices, the performance requirements for elastic elements are increasing day by day. And due to the limited space of the mobile phone main board, the requirements for the external dimensions of components are getting smaller and smaller. The traditional windowed design results in relatively weak strength of the two side protective walls. When the elastic piece is over-pressed, the protective side walls are easily deformed by external forces.

[0003] Therefore, how to ensure the strength, elasticity, and high life of the elastic piece on the basis of miniaturization has increasingly become the key to the expansion of the elastic piece in high-end application fields. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-strength positive pressure elastic piece to solve the deficiencies of the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-strength positive pressure elastic piece includes an elastic piece base and an elastic piece body; the elastic piece base includes a bottom plate, and protective side walls vertically bent upward from both sides of the bottom plate. The protective side walls are formed with supporting sliding platforms that protrude inward and are parallel to the bottom plate; the elastic piece body includes a tensioning part reversely bent and extended from the rear end of the bottom plate, an elastic arm inclined upward and bent and extended from the end of the tensioning part, and a supporting part reversely bent from the end of the elastic arm and extending toward the bottom plate. The lower end of the supporting part can slide back and forth along the supporting sliding platform.

[0007] Further, the bottom of the supporting part is bent upward to form a stopping part that is in smooth contact with the supporting sliding platform.

[0008] Further, both sides of the non-stopping part of the supporting part are cut to form retaining arms that protrude outward on both sides of the stopping part.

[0009] Further, the top of the protective side wall is horizontally bent inward to form a hanging platform for limiting the blocking arm.

[0010] Further, the support sliding table is formed by the stretching and piercing process in the stamping process.

[0011] Further, there is also a transition part between the tensioning part and the elastic arm, and the transition part is formed by bending and extending forward from the end of the tensioning part.

[0012] Further, on one side of the top of the protective side wall close to the transition part, a protective top plate is horizontally bent and extended, and the protective top plate covers directly above the transition part.

[0013] Further, at least one welding through hole is provided on the bottom plate to facilitate welding and fixing the elastic sheet on the circuit board.

[0014] Further, the middle part of the contact surface at the top end of the elastic arm bulges upward to form a contact head for making electrical contact with the metal connection area of the terminal device.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] This high-strength positive-pressure elastic sheet provided by the utility model provides simply supported support and a sliding path for the elastic sheet body by piercing and stretching the protective side walls on both sides from the outside to the inside, avoiding the blocking arms of the elastic sheet being exposed outside the protective side walls, not only improving the anti-hanging and anti-scratching performance of the elastic sheet body, but also effectively improving the strength of the protective side walls, ensuring the elasticity and service life of the elastic sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of a high-strength positive-pressure elastic sheet provided by an embodiment of the utility model Figure 1 ;

[0019] Figure 2 is a schematic diagram of the overall structure of a high-strength positive-pressure elastic sheet provided by an embodiment of the utility model Figure 2 ;

[0020] Figure 3 is a cross-sectional view of a high-strength positive-pressure elastic sheet provided by an embodiment of the utility model;

[0021] Figure 4 is a front view of a high-strength positive-pressure elastic sheet provided by an embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the prior art.

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0024] 1 - bottom plate, 101 - welding through hole, 2 - protective side wall, 201 - supporting slide, 202 - hanging platform, 3 - protective top plate, 4 - tensioning part, 5 - transition part, 6 - elastic arm, 601 - contact head, 7 - supporting part, 701 - blocking arm, 702 - stopping part. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] As Figures 1 to 4 shown, the embodiment of the present invention provides a high-strength positive pressure elastic sheet, which is integrally formed by a bending process, and includes an elastic sheet base and an elastic sheet body. Specifically:

[0027] In this embodiment, the elastic sheet base includes a bottom plate 1 and a protective side wall 2. Among them, at least one welding through hole 101 is opened on the bottom plate 1. During the surface mounting process, solder can be injected into the welding through hole 101, so that the bottom plate 1 can be welded to the signal connection part on the circuit board, increasing the welding stability between the bottom plate 1 and the printed circuit board, and thus making the connection between the elastic sheet and the circuit board more firm.

[0028] The protective side wall 2 is formed by vertically bending and extending upward from both sides of the bottom plate 1, and is used for overpressure protection of the elastic sheet body. In the middle of the left and right protective side walls 2, there are also formed inwardly protruding supporting slides 201 parallel to the bottom plate 1, and the two supporting slides 201 are mirror-symmetrical; the supporting slide 201 is integrally formed by the stretching and piercing process in the stamping process. Compared with directly punching holes in the protective side wall 2, this design has a smaller opening, and the blocking arm 701 of the elastic sheet will not protrude outside the protective side wall 2. While ensuring that the elastic sheet is anti-hanging and anti-scratching, it can also ensure that the two protective side walls 2 have sufficient structural strength and effectively avoid overpressure deformation.

[0029] The shrapnel body includes a tensioning portion 4, a transition portion 5, an elastic arm 6, and a support portion 7. Among them, the tensioning portion 4 is formed by bending and extending backward from the rear end of the bottom plate 1. The transition portion 5 is formed by bending and extending forward from the end of the tensioning portion 4. Correspondingly, a protective top plate 3 is horizontally bent and extended on one side of the top of the protective side wall 2 close to the transition portion 5. The protective top plate 3 covers directly above the transition portion 5, which can not only provide protection for the shrapnel body but also facilitate the suction nozzle to hold the product during subsequent assembly.

[0030] The elastic arm 6 is formed by bending and extending obliquely upward from the end of the transition portion 5. Through the elastic force, it can constantly abut against the metal connection area between the circuit board and the housing of the terminal device to achieve electrical contact. The middle of the contact surface at the top of the elastic arm 6 bulges upward to form a contact head 601, which can ensure good electrical contact in the metal connection area of the terminal device.

[0031] The support portion 7 is formed by bending backward from the end of the elastic arm 6 and extending toward the bottom plate 1. The support portion 7 can not only increase the contact force of the shrapnel body to a certain extent but also play a certain supporting role to prevent the elastic arm 6 from being excessively deformed when being squeezed. The bottom of the support portion 7 is bent upward to form an abutting portion 702 with an arc-shaped contact surface, so that the abutting portion 702 can contact the support slide 201 more smoothly.

[0032] The two sides of the non-abutting portion 702 of the support portion 7 are cut to form retaining arms 701 on both sides of the abutting portion 702, and the retaining arms 701 protrude outward from the main body of the support portion 7. Correspondingly, to prevent the support portion 7 from being disengaged from the shrapnel base due to external force or excessive resilience and being damaged, a hanging platform 202 is horizontally bent inward at the top of the protective side wall 2 to cooperate with the retaining arms 701 to limit the resilience height of the retaining arms 701.

[0033] The above embodiments only represent the implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A high-strength positive-pressure elastic sheet, characterized in that: It includes a shrapnel base and a shrapnel body; The shrapnel base includes a bottom plate (1) and protective side walls (2) vertically bent upward from both sides of the bottom plate (1). The protective side walls (2) are formed with support sliding platforms (201) that bulge inward and are parallel to the bottom plate (1); The shrapnel body includes a tensioning part (4) reversely bent and extended from the rear end of the bottom plate (1), an elastic arm (6) obliquely bent upward and extended from the end of the tensioning part (4), and a support part (7) reversely bent from the end of the elastic arm (6) and extended toward the bottom plate (1). The lower end of the support part (7) can slide back and forth along the support sliding platform (201).

2. The high-strength positive pressure elastic sheet according to claim 1, wherein: The bottom of the support part (7) is bent upward to form an abutting part (702) that smoothly contacts the support sliding platform (201).

3. The high-strength positive pressure elastic sheet according to claim 2, characterized in that: Both sides of the non-abutting part (702) of the support part (7) are cut to form blocking arms (701) that protrude outward on both sides of the abutting part (702).

4. The high-strength positive-pressure elastic piece according to claim 3, characterized in that: The top of the protective side wall (2) is horizontally bent inward to form a hanging platform (202) for limiting the blocking arm (701).

5. A high-strength positive-pressure elastic sheet according to claim 1, characterized in that: The support sliding platform (201) is formed by the stretching and piercing process in the stamping process.

6. The high-strength positive pressure elastic sheet according to claim 1, wherein: There is also a transition part (5) between the tensioning part (4) and the elastic arm (6). The transition part (5) is formed by the frontward bending and extension of the end of the tensioning part (4).

7. A high-strength positive-pressure elastic sheet according to claim 6, characterized in that: On one side of the top of the protective side wall (2) close to the transition part (5), a protective top plate (3) is horizontally bent and extended. The protective top plate (3) covers directly above the transition part (5).

8. A high-strength positive pressure elastic sheet according to claim 1, characterized in that: At least one welding through hole (101) is opened on the bottom plate (1) to facilitate welding and fixing the shrapnel on the circuit board.

9. The high-strength positive-pressure elastic sheet according to claim 1, characterized in that: The middle of the contact surface at the top of the elastic arm (6) bulges upward to form a contact head (601) for making electrical contact with the metal connection area of the terminal device.

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