Contact spring

Abstract

The utility model relates to the technical field of electronic products, in particular to a contact elastic sheet, which comprises a fixed part, a bending part connected with the fixed part and an elastic part connected with the bending part, the bending part is accommodated in a notch and is of a sunken U-shaped structure, and the elastic part is arranged in the notch. The elastic part is provided with a first bent section and a second bent section connected with the first bent section. According to the contact elastic piece, the sunken U-shaped structure is arranged between the fixing part and the bending part, the length of the elastic force arm is increased, and through the synergistic effect of the first bending section, the second bending section and the bending part, the elastic force and the deformation capacity of the contact elastic piece are enhanced, the phenomenon of breakage is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic product technical field especially, it relates to a contact spring. BACKGROUND

[0002] The contact spring is a key component widely used in electrical and electrical connector, usually made of metal material with excellent conductivity, widely used in electronic products, mobile phones, computers, cameras, intelligent robots and other modern science and technology products, common S type, C type, L type, Z type, spoon type and other shapes, to adapt to different application scenarios and needs.

[0003] Part of the existing contact spring is set to L-shaped structure (such as Figure 1 The four pins at the bottom end are fixed to the circuit board by welding, so that the elastic arm part is connected to the fixed part in a vertical state.

[0004] However, the elastic force of the above-mentioned L-shaped contact spring is poor, and in long-term actual use, the contact point is easy to break after being stressed, resulting in short service life. INVENTION CONTENTS

[0005] The utility model aims at: provide a kind of contact spring, for the deficiency of prior art, it aims at solving the technical problems that part of the existing contact spring is L-shaped structure, leading to poor elastic force and easy to break.

[0006] To achieve the above object, the technical scheme adopted by the utility model is:

[0007] A contact spring is installed on a circuit board with a notch, including a fixed part, a bent part connected to the fixed part and an elastic part connected to the bent part, the bent part is accommodated in the notch, the bent part is a sunken U-shaped structure, and the elastic part is provided with a first bending section and a second bending section connected to the first bending section.

[0008] The utility model is further provided as follows: the fixed part is provided with a support edge on the two sides close to the bent part, so that the bent part is accommodated between the two support edges.

[0009] The utility model is further provided as follows: the support edge and the fixed part are coplanar.

[0010] The utility model is further provided as follows: there is a gap between the support edge and the bent part.

[0011] The utility model is further provided as follows: the side surface of the second bending section away from the fixed part is provided with a contact point.

[0012] The utility model is further provided as follows: the fixed part is provided with a plurality of soldering legs bent downward.

[0013] Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a fixed part, the bending part with fixed part connection and the elasticity with bending part connection, the bending part is housed in the gap, and the bending part is sunken U-shaped structure, and the elasticity is provided with first bending section and second bending section with first bending connection. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0015] Figure 1 It is the structural schematic diagram of contact spring in prior art;

[0016] Figure 2 It is the structural schematic diagram of contact spring in the utility model from one angle;

[0017] Figure 3 It is the structural schematic diagram of contact spring in the utility model from another angle;

[0018] Figure 4 It is the structural schematic diagram of contact spring in the utility model installs to circuit board.

[0019] The label details involved in the above drawings are as follows:

[0020] 1-fixed part, 11-supporting edge, 12-welding leg;

[0021] 2-bending part;

[0022] 3-elasticity, 31-first bending section, 32-second bending section, 33-contact point;

[0023] 4-gap;

[0024] 5-circuit board, 51-gap. DETAILED DESCRIPTION

[0025] In the description of the present application, the term "a plurality of" refers to two or more (including two). The technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. The terms "mounting", "connecting", "connecting" and the like should be broadly understood, for example: "connecting" can be fixed connection, or detachable connection, or integral connection; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the description of the present application, the technical terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0027] In order to more clearly understand the above-mentioned purposes, technical solutions and advantages of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, and detailed understanding of how to solve the problems raised in the above background art.

[0028] It should be noted that the contact spring of the present embodiment is used for mounting on a circuit board 5, i.e. in the field of electronic manufacturing, but can also be applied to modern scientific and technological products such as mobile phones, computers, cameras, intelligent robots, etc., and the whole can be made of metal materials such as iron, brass, phosphor copper, aluminum alloy, etc.

[0029] As shown in FIG. Figures 2 to 4 A contact spring is mounted on a circuit board 5 provided with a notch 51, comprising a fixed portion 1, a bent portion 2 connected to the fixed portion 1, and an elastic portion 3 connected to the bent portion 2, the bent portion 2 is accommodated in the notch 51, the bent portion 2 is a sunken U-shaped structure, the elastic portion 3 is provided with a first bending section 31 and a second bending section 32 connected to the first bending section 31.

[0030] Specifically, the notch 51 on the circuit board 5 can be an open structure or a closed rectangular structure, the width of the rectangular structure is greater than the overall width of the bending section, facilitating the insertion and elastic deformation of the bending part 2; the contact spring piece of the embodiment can be integrally stamped or spliced by welding, which is not limited here; the fixed part 1 is a rectangular plate structure, facilitating the adhesion with the circuit board 5, and the bending part 2 is arranged at one side end of the fixed part 1, and the bending part 2 is designed to be sunken relative to the fixed part 1, and the fixed part 1 and the bending part 2 can be formed by multiple bending, thereby increasing the length of the spring arm; the bending part 2 is arranged in a U-shaped structure, thereby forming two symmetrical connecting edges, one connecting edge and the fixed part 1 are connected to form a rounded structure, and the other connecting edge and the first bending section 31 of the elastic part 3 are connected; the bent parts of the first bending section 31 and the second bending section 32 are arranged in a rounded structure, ensuring the stability and strength of the structure.

[0031] Through the above scheme, the first bending section 31, the second bending section 32 and the bending part 2 are cooperated to enhance the elastic force and deformation capacity of the contact spring piece, reduce the rupture phenomenon and prolong the service life.

[0032] As shown in Figure 2 and Figure 4 , as an improved specific embodiment, the fixed part 1 is provided with support edges 11 near both sides of the bending part 2, so that the bending part 2 is accommodated between the two support edges 11, and the support edges 11 and the fixed part 1 are arranged in the same plane.

[0033] Specifically, the support edges 11 are arranged at the front end of the fixed part 1 and close to the bending part 2, and the support edges 11 are L-shaped structures, so that one end of the support edges 11 is fixed to the side surface of the fixed part 1, and the other end extends along the fixed part 1 towards the bending part 2, at this time, the support edges 11 and the top surface and the bottom surface of the fixed part 1 are in the same plane, that is, the thickness of the support edges 11 and the fixed part 1 is the same, and the bending part 2 is arranged between the two support edges 11, based on this, since the bending part 2 and the elastic part 3 are arranged on one side surface of the fixed part 1, the overall center of gravity of the contact spring piece will also be on one side, therefore, the support plate can be laid on the circuit board 5, that is, the circuit board 5 on both sides of the notch 51, which can avoid the phenomenon of unstable center of gravity during installation.

[0034] As shown in Figure 2 , as an improved specific embodiment, there is a gap 4 between the support edges 11 and the bending part 2.

[0035] Specifically, including but not limited to, the gap 4 can avoid the bending part 2 when subjected to pressure, bending part 2 and circuit board 5, the friction of the support plate, therefore, at this time the gap 51 and the side of the support edge 11 of the circuit board 5 can be coplanar, also can be set between the gap 51 side and the support edge 11 side, the side of the bending part 2, the skilled person can set according to the demand, not limited here.

[0036] As shown in Figures 2 to 4 , as an improved embodiment, the second bending section 32 is provided with a contact point 33 on the side facing away from the fixed part 1.

[0037] Specifically, including but not limited to, in this embodiment, due to the addition of the first bending section of the bending part 2 and the elastic part 3, the position of the contact point 33 on the contact spring is shifted forward compared with the contact point 33 in the prior art, therefore, in order to ensure that the position of the contact point 33 on the contact spring does not change, the length of the fixed part 1 can be relatively reduced, at this time the support edge 11 is attached to the circuit board 5 to play a key role, which can ensure the stability of the center of gravity of the contact spring; the contact point 33 is a hemispherical structure, and can be used to connect the circuit board 5 with other devices or accessories.

[0038] As shown in Figure 2 and Figure 4 , as an improved embodiment, the fixed part 1 is provided with a plurality of soldering legs 12 bent downward.

[0039] Specifically, including but not limited to, the soldering leg 12 is provided with four, two of which are provided on the symmetric side of the side of the fixed part 1 connected with the bending part 2, and the other two are provided on the other two sides of the fixed part 1, which are symmetrically arranged, so that the fixed part 1 can be firmly inserted into the circuit board 5, and at the same time can cooperate with the support edge 11 to limit the inclination of the contact spring, that is, to stabilize the center of the contact spring, finally, a fixed hole corresponding to the four soldering legs 12 is provided on the circuit board 5, the fixed hole is a through hole, the length of the soldering leg 12 and the depth of the fixed hole can be the same, after inserting the soldering leg 12 into the fixed hole, the soldering leg 12 is fixed on the circuit board 5 by welding, so as to realize the fixation of the contact spring to the circuit board 5.

[0040] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiment, any technical solution belonging to the idea of the present application is within the protection scope of the present application. It should be pointed out that for ordinary technical personnel in this technical field, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. A contact spring, mounted on a circuit board with a notch, characterized in that: The fixing part, the bending part connected with the fixing part and the elastic part connected with the bending part are included, the bending part is accommodated in the notch, the bending part is a sunken U-shaped structure, and the elastic part is provided with a first bending section and a second bending section connected with the first bending section.

2. A contact spring according to claim 1, wherein The fixing part is provided with support edges near both sides of the bending part, so that the bending part is accommodated between the two support edges.

3. A contact spring according to claim 2, wherein The support edges and the fixing part are coplanar.

4. A contact spring according to claim 2, wherein There is a gap between the support edges and the bending part.

5. The contact spring of claim 1 wherein, The side of the second bending section away from the fixing part is provided with a contact point.

6. The contact spring of claim 1 wherein, The fixing part is provided with a plurality of downwardly bent welding legs.

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