Electrical connection structure
By designing a combined structure of the substrate and terminals, using the electrical conduction of the elastic arm to the contacts, rapid assembly and stable connection are achieved, and the positioning and welding problems of traditional electrical connection structures in small or dense terminals are solved, improving yield and reducing costs.
Patent Information
- Application Number
- CN202311355128.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-19
- Publication Date
- 2025-04-22
AI Technical Summary
Traditional electrical connection structures are difficult to accurately locate and weld when the terminal size is small or dense, resulting in time-consuming assembly, low yield and high cost.
An electrical connection structure is designed, adopting a combined structure between substrate and terminals, with through holes and contacts on the substrate, and the terminals have elastic arms and connection parts spaced from each other. The elastic arms are against the inner peripheral wall of the through hole and electrically conduct themselves with the contacts, achieving rapid assembly and stable connection.
The electrical connection structure is fast, no welding is required, the structure is stable, the yield is high, and it can reduce manufacturing costs, solving the positioning and welding problems of traditional connection methods in small or dense terminals.
Smart Images
Figure CN119864656A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to electronic devices, and in particular to an electrical connection structure. Background Art
[0002] The traditional electrical connection structure is to connect the terminal to the circuit on the circuit board by welding. Although this structure is reliable, in some special cases, such as when the terminal size is small or dense, it is not easy to accurately position the terminal at the predetermined position of the circuit board by using a fixture. Therefore, the process of welding the terminal to the circuit board is labor-intensive and time-consuming, and the yield cannot be improved, which increases the assembly cost. Therefore, finding a simpler and more reliable electrical connection method has become the direction of the industry's efforts. Summary of the invention
[0003] An object of the present invention is to provide an electrical connection structure which has fast assembly, stable structure, high yield and low manufacturing cost.
[0004] In order to achieve the above-mentioned purpose, the electrical connection structure of the present invention comprises a substrate and a terminal, the substrate has at least one through hole, the inner wall of the through hole is provided with at least one contact point, the terminal has two elastic arms spaced apart from each other, and a connecting portion connecting the two elastic arms, the two elastic arms are attached to the inner wall of the through hole and are electrically connected with the contact point. Thus, the electrical connection structure of the present invention is not only structurally stable and electrically connected, but also fast in assembly and does not require welding, and has a high yield rate and can reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0005] Figure 1 A three-dimensional diagram of the electrical connection structure of the first preferred embodiment of the present invention applied to a toner cartridge;
[0006] Figure 2 for Figure 1 A partial enlarged view of
[0007] Figure 3 An exploded view of the electrical connection structure of the first preferred embodiment of the present invention;
[0008] Figure 4 A front view of an electrical connection structure according to a first preferred embodiment of the present invention;
[0009] Figure 5 is a three-dimensional diagram of an electrical connection structure of a second preferred embodiment of the present invention;
[0010] Figure 6 is an exploded view of the electrical connection structure of the second preferred embodiment of the present invention;
[0011] Figure 7 It is a front view of the electrical connection structure of the second preferred embodiment of the present invention.
[0012]
Explanation of symbols
[0013] 1,1a Electrical connection structure 2 Toner cartridge
[0014] 10, 10a substrate 12 circuit 14, 14a through hole
[0015] 16 contacts 18 memory
[0016] D2 second spacing 19 first side
[0017] 191 Second Side
[0018] 20, 20a Terminal 22, 22a Elastic arm 23, 23a Connecting part
[0019] 24 first arc guide portion 25, 25a extension arm
[0020] 26 contact end D1 first spacing
[0021] 28a second arc guide portion 29 stop portion
[0022] 30 terminal fixing frame 31 bottom plate 34 extension plate
[0023] 35 slots 38 elastic hook arms
[0024] 40 positioning seat 42 accommodation space DETAILED DESCRIPTION
[0025] The following two preferred embodiments are combined with the accompanying drawings to explain the technical content and features of the present invention in detail. Figures 1 to 4 As shown, the electrical connection structure 1 provided in the first preferred embodiment of the present invention is used to be arranged on a toner cartridge 2 of an electronic imaging device (such as a copier or a printer, not shown in the figure). In other embodiments, the electrical connection structure 1 can be applied to other electronic devices. The electrical connection structure 1 includes a substrate 10, four terminals 20, a terminal fixing frame 30 and a positioning seat 40.
[0026] The substrate 10 is provided with a plurality of circuits 12, and the substrate 10 has four through holes 14, and the inner walls of the through holes 14 are respectively provided with two contacts 16 electrically connected to the circuits 12, and a memory 18 is provided on one side of the substrate 10 to electrically connect the circuits 12, and the memory 18 stores the relevant information of the toner cartridge 2. In other embodiments, the inner walls of the through holes 14 only need to be provided with at least one contact 16.
[0027] Each terminal 20 is in the form of a sheet and has two elastic arms 22 spaced apart from each other, a connecting portion 23 connecting the two elastic arms 22, two extension arms 25 extending from the ends of the two elastic arms 22, and two contact ends 26 located at the ends of the two extension arms 25 for overlapping with the electronic imaging device. The two elastic arms 22 are attached to the inner peripheral wall of the through hole 14 and are electrically connected to the contacts 16, wherein the connecting portion 23 is arc-shaped, and the two elastic arms 22 extend from the two ends of the connecting portion 23 in parallel, so that the two elastic arms 22 can be deformed by force and approach each other. The outer edge of the connection between the portion 23 and the two elastic arms 22 has two first arc guide portions 24, so that the two elastic arms 22 can smoothly extend into the through hole 14. Since the first distance D1 between the outer edges of the two elastic arms 23 is slightly larger than the second distance D2 between the inner peripheral walls of the through hole 14, when the two elastic arms 22 extend into the through hole 14, the two elastic arms 22 and / or the connecting portion 23 will be slightly deformed, so that the two elastic arms 22 can be pressed against the contacts 16 by elastic force. In this way, not only is the structure stable, but also the electrical connection can be ensured to be reliable, without welding and improving the yield. In other embodiments, the number of the extension arm 25 or the contact end 26 of the terminal 20 only needs to be at least one, or the structure of the terminal 20 can be changed, for example, the two extension arms 25 are omitted.
[0028] The terminal fixing frame 30 includes a bottom plate 31, two extension plates 34 extending from the bottom plate 31 in parallel, a plurality of embedding grooves 35 provided on the two extension plates 34 and the bottom plate 31 for accommodating the extension arms 25 of the terminals 20, and three elastic hook arms 38 extending from the bottom plate 31 in parallel in a direction opposite to the two extension plates 34. The terminal fixing frame 30 can fix the relative positions of the terminals 20. When the terminal fixing frame 30 is moved close to the substrate 10, the connection portions 23 of the terminals 20 can be correctly extended into the through holes 14 and electrically connected with the contacts 16. This not only makes assembly quick, but also eliminates the need to align and weld each terminal 20 with the through holes 14 of the substrate 10 one by one. Omitting such time-consuming and labor-intensive processes can effectively reduce manufacturing costs and improve yield.
[0029] The positioning seat 40 is sleeved on the front section of the toner cartridge 2. The positioning seat 40 has a receiving space 42 for receiving the substrate 10. When the terminal fixing frame 30 is hooked on the positioning seat 40 through the elastic hook arms 38, the positioning seat 40 is connected to the terminal fixing frame 30 and the substrate 10 is sandwiched therebetween. This can further ensure that the elastic arms 22 of the terminals 20 extend into the through holes 14 of the substrate 20, thereby achieving electrical connection between the terminals 20 and the substrate 10, and making the electrical connection structure 1 of the present invention more stable and with a lower process defect rate. In other embodiments, the terminal fixing frame 30 can be connected to the positioning seat 40 by bonding, clamping or other methods.
[0030] Based on the design spirit of the present invention, the structure of the electrical connection structure 1 may have other changes, such as Figures 5 to 7 FIG. 1 is an electrical connection structure 1a provided by a second preferred embodiment of the present invention, which is substantially the same as the first embodiment, except that the substrate 10a of the electrical connection structure 1a combines the four through holes 14 of the first embodiment into one through hole 14a, and the inner peripheral wall of the through hole 14a also has a plurality of contacts 16. The two extension arms 25a of each terminal 20a extend from the connecting portion 23a (rather than the two elastic arms 22 of the first embodiment), so that the opening square of the U-shaped structure formed by the two elastic arms 22a and the connecting portion 23a is Different from the first embodiment, the end of the elastic arm 22a of each terminal 20a has a second arc guide portion 28a, so that the two elastic arms 22a can smoothly extend into the through hole 14a, and each elastic arm 22a further extends outward with a stop portion 29. When the two elastic arms 22a extend into the through hole 14a from a first side 19 of the substrate 10a, the two stop portions 29 are located at a second side 191 of the substrate 10a, wherein the first side 19 and the second side 191 are located at opposite sides of the substrate 10a. In this way, the two elastic arms 22a can also be elastically deformed and pressed against the contacts 16 by elastic force. The electrical connection structure 1a is not only fast in assembly, stable in structure, high in yield and low in manufacturing cost, but also can prevent the terminals 20a from accidentally detaching from the through hole 14a of the substrate 10a through the stop portions 29.
[0031] The electrical connection structure of the present invention may also have other changes. For example, the first arc guide portion 24, the second arc guide portion 28a and the two stop portions 29 may be omitted. The terminal fixing frame 30 and the positioning seat 40 are used to assist in positioning the substrate 10 and the terminals 20. The structure may be changed or omitted. All such easily conceivable structural changes should be covered by the patent application scope of the present invention.
Claims
1. An electrical connection structure, characterized in that: Contains: A substrate having at least one through hole, wherein the inner peripheral wall of the through hole is provided with at least one contact point; and A terminal has two elastic arms spaced apart from each other and a connecting portion connecting the two elastic arms. The two elastic arms are pressed against the inner peripheral wall of the through hole and are electrically connected with the contact point.
2. The electrical connection structure according to claim 1, wherein: The connecting portion is arc-shaped, and the two elastic arms extend from two ends of the connecting portion in parallel.
3. The electrical connection structure according to claim 1, wherein: The outer edge of the connection between the connecting portion and the two elastic arms has two first arc guide portions, so that the two elastic arms can smoothly extend into the through hole.
4. The electrical connection structure according to claim 1, wherein: The terminal further comprises two extension arms extending from the ends of the two elastic arms, and two contact ends are located at the ends of the two extension arms.
5. The electrical connection structure according to claim 1, wherein: The terminal further comprises two extension arms extending from the connecting portion, and two contact ends are located at the ends of the two extension arms.
6. The electrical connection structure according to claim 1, wherein: The end of each elastic arm has a second arc guide portion, so that the two elastic arms can smoothly extend into the through hole.
7. The electrical connection structure according to claim 1, wherein: Each of the elastic arms has a stop portion extending outwardly. When the two elastic arms extend into the through hole from a first side of the substrate, the two stop portions are located on a second side of the substrate, wherein the first side and the second side are located on opposite sides of the substrate.
8. The electrical connection structure according to any one of claims 1 to 7, characterized in that: The terminal is in the shape of a sheet as a whole.
9. The electrical connection structure according to any one of claims 1 to 7, characterized in that: The two elastic arms can be elastically deformed and pressed against the contact point by elastic force.
10. The electrical connection structure according to any one of claims 1 to 7, characterized in that: The utility model also comprises a terminal fixing frame for the terminal to be embedded and fixed.
11. The electrical connection structure according to claim 10, wherein: It also includes a positioning seat connected with the terminal fixing frame, and the positioning seat and the terminal fixing frame clamp the substrate therebetween.
12. The electrical connection structure according to claim 11, wherein: The terminal fixing frame has a plurality of elastic hook arms which are hooked on the positioning seat.
13. The electrical connection structure according to claim 11, wherein: The positioning seat is arranged on a carbon powder box.