A chip contact

Abstract

The application discloses a sheet contact, belonging to the field of connectors, comprising two contact springs arranged oppositely, wherein the contact springs are directly connected with fixed segments, or the contact springs are connected with the fixed segments through connecting segments, or the contact springs, the connecting segments and the fixed segments are integrally formed; the contact spring comprises an integrally formed cantilever segment and a contact part, the cantilever segment is connected with the fixed segment or the connecting segment, and the contact part has an arc-shaped feature bending towards the opposite contact spring; the contact parts of the two contact springs form an insertion space through the arc-shaped feature, so that a round pin can be inserted into the insertion space from a direction not parallel to the extension direction of the cantilever segment. The application can realize the insertion of the round pin from one side of the cantilever extension direction.

Description

Technical Field

[0001] This invention belongs to the field of connectors, and specifically relates to a sheet contact. Background Technology

[0002] With the rapid development of 5G technology, communication suppliers are increasingly demanding higher current-carrying capacity from power connectors used in base station equipment. As inter-board connectors, PCB connectors require small size and high current-carrying capacity, which are crucial performance indicators for power PCB connectors. Stamped contact components, as an important branch of connector contact components, are characterized by high processing efficiency and high current-carrying capacity, holding a vital position among contact components.

[0003] Currently, there are two main types of stamped contact parts: sheet contact parts and circular rolled contact parts.

[0004] Plate contacts are mainly divided into split plate contacts and one-piece molded plate contacts, such as... Figure 1 The image shows a split-type plate contact 100. During assembly, each contact pin needs to be individually inserted and fixed to form an engagement space. This assembly process is complex and has high manufacturing costs. For example... Figure 2 The image shows a one-piece molded sheet contact component, made of... Figure 2 It is known that this type of contact piece connects all the contact pins into one piece through the connection feature to form an integral structure, which greatly simplifies the assembly process. However, this contact piece has the same drawback as the split-type plate contact piece: it can only be inserted into the plate pin in the cantilever extension direction. When the insert is a round pin, or the insertion direction is on one side of the cantilever extension direction, reliable contact cannot be achieved.

[0005] for Figure 3 The circular rolled contact shown is integrally formed, which is efficient in processing and can be inserted with a circular pin. However, because the cantilever occupies a large amount of the flow passage area, the effective flow passage area is only a narrow area at the tail end of the cantilever, resulting in a certain deficiency in the flow passage capacity of this type of contact. Summary of the Invention

[0006] The purpose of this invention is to provide a sheet contact element that forms a novel contact structure by means of a cantilever and an arc feature extending from the cantilever. This contact structure can realize the insertion of a circular pin from one side of the cantilever extension direction, and the structure has a high utilization rate of the flow passage area and a significantly improved flow capacity.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a sheet-type contact element, comprising two contact springs arranged opposite to each other, wherein the contact springs are directly connected to a fixed section, or the contact springs are connected to the fixed section through a connecting section, or the contact springs, the connecting section and the fixed section are integrally formed.

[0008] The contact spring piece comprises a cantilever section and a contact section, the cantilever section is connected with the fixed section or the connecting section, the contact section has an arc-shaped feature bending to the opposite contact spring piece, the contact sections of the two contact spring pieces form a plug-in space through the arc-shaped feature, so that the round pin can be inserted into the plug-in space from a direction not parallel to the extension direction of the cantilever section.

[0009] The beneficial effect is that the contact piece adopts the arc-shaped feature in the contact section, forms the plug-in space with the jack feature suitable for the round pin, and then the round pin can be inserted into the plug-in space from the side not parallel to the extension direction of the cantilever section, and the current conduction is realized.

[0010] Further, the arc-shaped feature corresponds to a circular arc or an elliptical arc.

[0011] The beneficial effect is that the specific form of the arc-shaped feature is limited, and the implementer can select according to the actual situation.

[0012] Further, when the arc-shaped feature adopts the circular arc, the centers of the circular arcs on the two contact sections do not coincide.

[0013] The beneficial effect is that the centers of the two circular arcs do not coincide, so that the round pin can form a line contact with the contact section after being inserted.

[0014] Further, the centers of the arc-shaped features on the two contact spring pieces are located between the two contact sections.

[0015] The beneficial effect is that a wider plug-in space can be formed, and the insertion of the round pin is facilitated.

[0016] Further, at least one end face of the contact section in the direction of the insertion of the round pin is provided with a chamfer or a rounded structure.

[0017] The beneficial effect is that the chamfer or the rounded structure can better guide the insertion of the round pin.

[0018] On the basis of the above-mentioned scheme, the technical scheme is further limited: when the contact spring piece is connected with the fixed section through the connecting section, the connecting section comprises two oppositely arranged connecting plates, and a bending part connecting the two connecting plates into a whole at one end or both ends of the connecting plate, a plurality of contact spring pieces are arranged on each connecting plate in the plug-in direction, and the plurality of contact spring pieces on the two connecting plates are oppositely arranged.

[0019] The beneficial effect is that the integrally formed connecting section can connect the oppositely arranged plurality of contact spring pieces into a whole, and the installation of the contact piece is facilitated.

[0020] Further, a plurality of through-hole welding pins are arranged below the connecting plates of the connecting section to form the fixing section.

[0021] The beneficial effect is that a fixing section structure is defined, and the sheet contact can be fixedly connected with the electric component through the through-hole welding.

[0022] Alternatively, a plurality of surface-mounting welding pins are arranged below the connecting plates of the connecting section to form the fixing section.

[0023] The beneficial effect is that a fixing section structure is defined, and the sheet contact can be fixedly connected with the electric component through the surface-mounting welding.

[0024] Alternatively, a screw fastening structure is arranged below the connecting plates of the connecting section to form the fixing section, and the screw fastening structure is provided with a fixing hole for mounting a screw.

[0025] The beneficial effect is that a fixing section structure is defined, and the sheet contact can be fixedly connected with the electric component through the screw fastening.

[0026] On the basis of the above-mentioned scheme, the technical scheme is further limited as follows: when the contact spring is connected with the fixing section through the connecting section, the connecting section comprises two oppositely arranged connecting plates, and the two connecting plates are separately arranged, and a plurality of contact springs are arranged on each connecting plate along the insertion direction, and the plurality of contact springs on the two connecting plates are oppositely arranged to form two oppositely arranged whole sheet pins.

[0027] The beneficial effect is that the sheet contact in the scheme is a split structure composed of two whole sheet pins, and during assembly, the contact springs do not need to be assembled one by one, and only the two whole sheet pins need to be assembled opposite to each other to form an insertion space, which is convenient for assembly and processing.

[0028] Further, a plurality of through-hole welding pins are arranged below the connecting plates of the connecting section to form the fixing section.

[0029] Alternatively, a plurality of surface-mounting welding pins are arranged below the connecting plates of the connecting section to form the fixing section.

[0030] Alternatively, a screw fastening structure is arranged below the connecting plates of the connecting section to form the fixing section, and the screw fastening structure is provided with a fixing hole for mounting a screw.

[0031] The beneficial effect is that on the basis of the whole sheet pin, the structure of the fixing section is limited, and three feasible fixing section structure forms are given, which is convenient for the implementer to select and use according to the actual situation.

[0032] The beneficial effects of the present invention are as follows: 1. Compared with the traditional sheet contact, the contact structure of the sheet contact proposed in the present invention adopts an arc-shaped feature in the contact section to form an insertion space of the insertion hole structure, which can realize the insertion of the circular pin from one side of the cantilever section extension direction; compared with the circular rolled and stamped contact, the cantilever section of the present invention does not cause waste of the flow passage area, and each cantilever section is an effective flow passage structure, which can greatly improve the flow passage capacity of the contact.

[0033] 2. The connecting section of the present invention is formed by a connecting plate and a bending part to form an integral structure, connecting multiple contact springs into a whole, so that the contact can be integrally formed by stamping, which is simple to assemble. At the same time, by modifying the connecting section, the contact can have other structural forms.

[0034] 3. The fixed section of the present invention has a variety of different structural forms, which can be selected according to the needs of the installation scenario, thus expanding the scope of application of the present invention. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the insertion state of a split-type plate contact in the prior art, with the arrow indicating the insertion direction;

[0036] Figure 2 This is a schematic diagram of the insertion state of a one-piece molded sheet contact in the prior art, with the arrow indicating the insertion direction;

[0037] Figure 3 This is a schematic diagram of the insertion state of a circular rolled contact in the prior art, with the arrow indicating the insertion direction;

[0038] Figure 4 This is a schematic diagram of the sheet contact element described in Example 1;

[0039] Figure 5 This is a schematic diagram of the contact segment in the plate-type contact element described in Example 1;

[0040] Figure 6 This is a schematic diagram of the mating of the plate contact and the circular pin described in Example 1;

[0041] Figure 7 This is a schematic diagram of the plate contact and the circular pin in the insertion direction after they are inserted as described in Example 1;

[0042] Figure 8 This is a schematic diagram of the connection segment of the plate-type contact element described in Example 1;

[0043] Figure 9 This is a schematic diagram of the structure of the chip contact described in Example 1, which uses through-hole soldered pins as the fixing section;

[0044] Figure 10This is a schematic diagram of the structure of the chip contact described in Example 1, which uses surface-mount soldered pins as the fixed section;

[0045] Figure 11 This is a schematic diagram of the plate contact element described in Example 1, which uses a screw fastening structure as the fixing section.

[0046] Figure 12 This is a schematic diagram of the sheet contact element described in Example 2;

[0047] Figure 13 This is a schematic diagram of the sheet contact element described in Example 3;

[0048] The markings in the diagram are: 100, split-type plate contact, 200, plate pin, 300, one-piece molded plate contact, 400, circular rolled contact, 401, effective flow area, 500, circular pin, 600, plate contact, 700, contact plate needle, 800, integral plate needle.

[0049] 1. Contact section, 2. Connecting section, 3. Fixing section, 4. Contact spring, 5. Interlocking space, 6. Contact part, 7. Cantilever section, 8. Fixing point, 9. Chamfer, 10. Contact position, 11. Connecting plate, 12. Bending part, 13. Through hole soldering pin, 14. Surface mount soldering pin, 15. Screw fastening structure. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention in any way.

[0051] Example 1

[0052] See attached document Figure 4 As shown, the sheet contact described in this embodiment is a stamped, one-piece sheet contact, including a contact section 1, a connecting section 2, and a fixing section 3. The connecting section 2 is used to connect the contact section 1 and the fixing section 3 to form a one-piece structure.

[0053] The contact segment 1 is used to form an insertion space for insertion with a circular pin to achieve current transmission. For example... Figure 5 As shown, the contact segment 1 consists of at least one pair of face-to-face contact springs 4, with an insertion space 5 having a hole feature formed between the facing contact springs 4, used to achieve insertion with a circular pin on one side. The number of contact springs 4 can be adjusted according to the insertion direction (e.g., ...). Figure 6 The arrows shown continue to increase in the direction parallel to the direction indicated.

[0054] Specifically, the contact spring 4 includes a cantilever section 7 and a contact portion 6, wherein the cantilever section 7 is connected to the connecting section 2 at a fixed point 8. Therefore, the cantilever section 7 can be positioned in the space above the fixed point 8 (i.e.,Figure 5 Within the space above the dotted line shown, it can deflect at any angle. Preferably, the thickness of the connecting segment 2 is greater than the thickness of the contact spring 4, so that the connecting segment 2 can provide more reliable support for the contact spring 4 while ensuring the elasticity of the contact spring 4 itself. The contact portion 6 is formed by extending from the end of the cantilever segment 7 and bending towards the contact spring 4 on the opposite side during the extension to form an arc feature. The arc feature can be a segment of a circle or a segment of an ellipse. The two opposite contact portions 6 can form an interlocking space 5 with a hole feature through the arc feature. Preferably, the center of the arc (including the center of the circle and the center of the ellipse) is located between the contact portions 6 of the two contact springs 4. It can be understood that when the arc shape is fixed, the maximum width of the interlocking space 5 is larger when the center of the two arcs is located between the two contact portions 6, and the maximum width of the interlocking space 5 is smaller when the center of the two arcs is located outside the area between the two contact portions 6.

[0055] Furthermore, to ensure a gentler insertion force and prevent excessive insertion force, it is necessary to ensure line contact between the contact portion 6 and the circular pin 500. Therefore, when the contact portion 6 has an arc feature, the centers of the contact portions 6 on the two opposing contact springs 4 do not coincide. At this time, after the circular pin 500 is inserted with the plate-type contact member of this embodiment, the circular pin 500 and the contact portion 6 form line contact, and the contact position 10 of the line contact is as follows: Figure 7 As shown.

[0056] Preferred, such as Figure 5 As shown, the end face of the contact section 1 facing the insertion direction of the circular pin 500 is chamfered or rounded to facilitate the smooth insertion of the circular pin 500.

[0057] like Figure 4 , 8 As shown, the connecting segment 2 has a thin-walled structure and has two parallel or nearly parallel connecting plates 11. One or both ends of the two connecting plates 11 are connected into a whole by a bending part 12. The multiple contact springs 4 of the contact segment 1 are respectively connected to the two connecting plates 11.

[0058] The main function of the fixing section 3 is to connect the contact element to the electrical component, thereby enabling current conduction. In this embodiment, the fixing section 3 has a different structure, as detailed below:

[0059] Structure 1: such as Figure 9 As shown, multiple through-hole soldering pins 13 are led out below the connection section 2, and the plate contact can be fixedly connected to the electrical component by through-hole soldering.

[0060] Structure 2: such as Figure 10As shown, multiple surface-mount soldering pins 14 are led out below the connection section 2, and the surface-mount contact can be fixedly connected to the electrical component by surface-mount soldering.

[0061] Structure 3: such as Figure 11 As shown, a thin-walled structure is extended below the connecting section 2, and holes are made in the thin-walled structure to form a screw fastening structure 15. The plate contact is fixedly connected to the electrical component by means of screw fastening.

[0062] Example 2

[0063] like Figure 12 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the sheet contact includes at least two contact springs 4. Each contact spring 4 is directly connected to the fixing segment 3, or connected to the fixing segment 3 through the connecting segment 2, to form an integrally formed contact pin 700. The contact springs 4 and the fixing segment 3 have the same structure as in Embodiment 1. During assembly, each contact pin 700 is assembled and fixed, and the two contact pins 700 in pairs form the insertion space 5 described in Embodiment 1 through the contact portion 6 of the contact spring 4, realizing the insertion function with the circular pin 500.

[0064] Example 3

[0065] like Figure 13 As shown, the difference between this embodiment and Embodiment 1 is that the plate contact in this embodiment has a split structure, consisting of two integral plate pins 800 arranged opposite each other when in use. Multiple contact springs 4 on the integral plate pins are arranged along the insertion direction and connected to the same connecting segment 2, while the connecting segments 2 of the two integral plate pins 800 are separate and no longer connected by the bent portion shown in Embodiment 1. During assembly, this split plate contact only requires assembling the two integral plate pins 800 separately to form the insertion space 5 described in Embodiment 1, achieving the insertion function with the circular pin 500.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A sheet-type contact element, comprising two opposing contact springs (4), the contact springs (4) being connected to a fixed section (3) via a connecting section (2), or the contact springs (4), the connecting section (2), and the fixed section (3) being an integrally formed structure; characterized in that: The contact spring (4) includes an integrally formed cantilever section (7) and a contact portion (6). The cantilever section (7) and the connecting section (2) are connected. The contact portion (6) has an arc-shaped feature that bends toward the opposite contact spring (4). The contact portions (6) of the two contact springs (4) form an interlocking space (5) through the arc-shaped feature, so that the circular pin (500) can be inserted into the interlocking space (5) from a direction that is not parallel to the extension direction of the cantilever section (7). The arc shape corresponding to the arc feature is a circular arc, and the centers of the circular arcs on the two contact parts (6) do not coincide; The connecting section (2) includes two connecting plates (11) arranged opposite to each other, and a bent part (12) connecting the two connecting plates (11) into a whole at one or both ends of the connecting plate (11). Each connecting plate (11) is provided with a plurality of contact springs (4) along the insertion direction, and the plurality of contact springs (4) on the two connecting plates (11) are arranged opposite to each other.

2. The sheet contact element according to claim 1, characterized in that: The center of the arc-shaped feature on the two contact springs (4) is located between the two contact parts (6).

3. The sheet contact element according to claim 1, characterized in that: The contact spring (4) has at least one contact portion (6) with a chamfer (9) or rounded structure on one end face facing the insertion direction of the circular pin (500).

4. The sheet contact element according to claim 1, characterized in that: The connecting plate (11) of the connecting segment (2) is provided with multiple through-hole welding pins (13) to form the fixed segment (3).

5. The sheet contact element according to claim 1, characterized in that: The connecting plate (11) of the connecting segment (2) has multiple surface-mount soldering pins (14) below it to form the fixed segment (3).

6. The plate contact element according to claim 1, characterized in that: The connecting plate of the connecting section is provided with a bent screw fastening structure (15) to form the fixing section (3). The screw fastening structure (15) is provided with fixing holes for installing screws.

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