Auxiliary electrical connection device
By setting fixed components and limit holes on the printed circuit board, the problem of prone to skewness in the probe installation is solved, and higher installation accuracy and lower rework rate are achieved, and the mechanical and electrical performance of the probe is maintained stable.
Patent Information
- Application Number
- CN202420368033.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-02-27
AI Technical Summary
Under the limited PCB thickness and aperture tolerance, the probe is easily skewed, resulting in problems such as difficult assembly, low quality, and high rework rate.
By providing a fixing assembly, the probe forms a mechanical connection with the printed circuit board through a mechanical connection with the fixing assembly, ensuring installation accuracy. The fixing assembly includes a fixing block and a fixing member, which is arranged vertically or obliquely in the second limiting hole to provide better positioning accuracy and installation method at any angle for the probe.
Through the setting of fixed components, the stable installation of the probe is achieved, the installation accuracy is improved, the rework rate is reduced, and the stability and reliability of mechanical and electrical performance is maintained.
Smart Images
Figure CN222561639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power module testing, in particular to an auxiliary electrical connection device. Background Art
[0002] With the development of technology, the application of power semiconductor IGBT and MOSFET modules has become increasingly popular. The reliability of the device needs to be evaluated during the device development process, manufacturing process and before application. Before conducting an electrical evaluation, the device under test needs to be electrically connected to the test equipment through a fast, non-permanent connection method.
[0003] The commonly used connection method at present is to connect the electrical interface of the test equipment to a specific printed circuit board, and then use the spring probe installed on the printed circuit board to make electrical connection with the device under test; when using a single printed circuit board for connection, since the common thickness of the printed circuit board is 1.6mm and the maximum manufacturable industry standard is 2.0mm, compared with the probe with a diameter of more than 3mm, under the conditions of limited printed circuit board thickness and aperture tolerance, the installation of the probe is prone to skew, which leads to problems such as difficulty in assembly, low quality, and high rework rate. Utility Model Content
[0004] The technical problem to be solved by the utility model is how to ensure the installation accuracy of the auxiliary electrical connection device.
[0005] The utility model solves the above technical problems through the following technical means:
[0006] An auxiliary electrical connection device comprises a printed circuit board (1), a probe (2), and a fixing assembly (3); the probe (2) is fixed on the printed circuit board (1) via the fixing assembly (3).
[0007] Beneficial effects: Through the setting of the fixing component, the probe forms a mechanical connection with the printed circuit board through the mechanical connection with the fixing component, thereby ensuring the installation accuracy.
[0008] Furthermore, the probes (2) are provided in a plurality of groups, the fixing components (3) are fixed on the bottom of the printed circuit board (1), and the number of the fixing components (3) is consistent with the number of groups of the probes (2).
[0009] Furthermore, the number of the fixing components (3) is four, the number of the groups of probes (2) is four, and each fixing component (3) and each group of probes (2) are arranged along the four corners of a rectangle in the middle of the printed circuit board (1).
[0010] Furthermore, each group of probes (2) includes nine probes (2).
[0011] Furthermore, the fixing assembly (3) comprises a fixing block (31) and a fixing member (32), wherein the fixing member (32) fixes the fixing block (31) to the printed circuit board (1), and the probe (2) penetrates the printed circuit board (1) and extends out of the fixing block (31).
[0012] Furthermore, the printed circuit board (1) is provided with a plurality of first mounting holes (11), the fixing block (31) is provided with a second mounting hole (311) near the first mounting hole (11), and the fixing member (32) sequentially passes through the first mounting hole (11) and the second mounting hole (311) to fix the fixing block (31) on the printed circuit board (1).
[0013] Furthermore, the printed circuit board (1) is provided with a plurality of groups of first limiting holes (12), and the probes (2) are provided with a plurality of groups, the number of groups of the probes (2) being the same as the number of groups of the first limiting holes (12); the fixed blocks (31) are provided with second limiting holes (312) near the first limiting holes (12), and the probes (2) are passed through the first limiting holes (12) and the second limiting holes (312) in sequence, and extend out from the bottom wall of the fixed blocks (31).
[0014] Furthermore, each group of the first limiting holes (12) includes a plurality of first limiting holes (12), each group of the probes (2) includes a plurality of probes (2), and the number of the probes (2) in each group is consistent with the number of the first limiting holes (12) in each group.
[0015] Furthermore, the second limiting hole (312) on the fixing block (31) is a vertical opening.
[0016] Beneficial effect: By setting the second limiting hole vertically, better vertical positioning accuracy can be provided for the probe without increasing the thickness and number of layers of the printed circuit board.
[0017] Furthermore, the second limiting hole (312) on the fixing block (31) is an oblique opening.
[0018] Beneficial effect: By setting the oblique opening of the second limiting hole, a mounting method at any angle can be provided between the probe and the printed circuit board, and its mechanical and electrical properties can be kept stable and reliable.
[0019] The advantages of the utility model are:
[0020] The utility model provides a fixing component, and the probe forms a mechanical connection with the printed circuit board through a mechanical connection with the fixing component, thereby ensuring installation accuracy.
[0021] The utility model provides a better vertical positioning accuracy for the probe without increasing the thickness and the number of layers of the printed circuit board through the vertical opening arrangement of the second limiting hole.
[0022] The utility model can provide a mounting method at any angle between the probe and the printed circuit board through the oblique opening arrangement of the second limiting hole, and can keep the mechanical and electrical performances thereof stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a working schematic diagram of the auxiliary electrical connection device of Embodiment 1 of the utility model;
[0024] Figure 2 This is an exploded view of an auxiliary electrical connection device according to Embodiment 1 of the present utility model;
[0025] Figure 3 It is a top view of an auxiliary electrical connection device according to an embodiment of the present utility model. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Embodiment 1
[0028] like Figure 1 As shown, this embodiment provides an auxiliary electrical connection device, including a printed circuit board 1, a probe 2, and a fixing component 3.
[0029] like Figure 1 As shown, the probe 2 is fixed on the printed circuit board 1 via a fixing component 3 .
[0030] like Figure 1 , Figure 2 , Figure 3 As shown, a plurality of first mounting holes 11 and a plurality of groups of first limiting holes 12 are provided on the printed circuit board 1. The number of the first mounting holes 11 is consistent with the number of groups of the first limiting holes 12. In this embodiment, four first mounting holes 11 and four groups of first limiting holes 12 are provided. Each group of first limiting holes 12 includes a plurality of first limiting holes 12. In this embodiment, each group of first limiting holes 12 includes nine first limiting holes 12. Each first mounting hole 11 and each group of first limiting holes 12 are arranged along the four corners of a rectangle in the middle of the printed circuit board 1.
[0031] like Figure 1 , Figure 2 , Figure 3 As shown, multiple groups of probes 2 are provided, the number of groups of probes 2 is consistent with the number of groups of first limiting holes 12, each group of probes 2 includes multiple probes 2, and the number of probes 2 in each group is consistent with the number of first limiting holes 12 in each group; this embodiment example provides four groups of probes 2, and each group of probes 2 includes nine probes 2.
[0032] like Figure 1 , Figure 2 As shown, the fixing component 3 is fixed at the bottom of the printed circuit board 1, and the number of the fixing components 3 is consistent with the number of groups of probes 2; the fixing component 3 includes a fixing block 31 and a fixing member 32, and the fixing block 31 is provided with a second mounting hole 311 near the first mounting hole 11, and the fixing member 32 sequentially penetrates the first mounting hole 11 and the second mounting hole 311 to fix the fixing block 31 on the printed circuit board 1; the fixing block 31 is provided with a second limiting hole 312 near the first limiting hole 12, and each probe 2 sequentially penetrates each first limiting hole 12 and the second limiting hole 312 to extend from the bottom wall of each fixing block 31.
[0033] like Figure 1 , Figure 2 As shown, the second limiting hole 312 on the fixing block 31 of the present embodiment is a vertical opening. By using the fixing component 3, the probe 2 can be provided with better vertical positioning accuracy without increasing the thickness and number of layers of the printed circuit board 1. In addition, the second limiting hole 312 on the fixing block 31 can also be an oblique opening, which can provide an installation method of any angle between the probe 2 and the printed circuit board 1 and keep its mechanical and electrical properties stable and reliable.
[0034] When in use, the electrical interface of the test equipment (not shown) is connected to the printed circuit board 1, and the device under test 4 is connected to the output end of the probe 2, thereby achieving electrical connection between the device under test 4 and the test equipment.
[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. An auxiliary electrical connection device, characterized in that: The invention comprises a printed circuit board (1), a probe (2), and a fixing assembly (3); the probe (2) is fixed to the printed circuit board (1) via the fixing assembly (3); the fixing assembly (3) comprises a fixing block (31) and a fixing member (32); the fixing member (32) fixes the fixing block (31) to the printed circuit board (1); and the probe (2) penetrates the printed circuit board (1) and the fixing block (31) and extends out.
2. An auxiliary electrical connection device according to claim 1, characterized in that: The probes (2) are provided in multiple groups, the fixing components (3) are fixed on the bottom of the printed circuit board (1), and the number of the fixing components (3) is consistent with the number of groups of the probes (2).
3. An auxiliary electrical connection device according to claim 2, characterized in that: The number of the fixing components (3) is four, the number of the groups of probes (2) is four, and each fixing component (3) and each group of probes (2) are arranged along the four corners of a rectangle in the middle of the printed circuit board (1).
4. An auxiliary electrical connection device according to claim 3, characterized in that: Each set of probes (2) comprises nine probes (2).
5. An auxiliary electrical connection device according to claim 1, characterized in that: The printed circuit board (1) is provided with a plurality of first mounting holes (11), the fixing block (31) is provided with a second mounting hole (311) near the first mounting hole (11), and the fixing member (32) sequentially penetrates the first mounting hole (11) and the second mounting hole (311) to fix the fixing block (31) on the printed circuit board (1).
6. An auxiliary electrical connection device according to claim 1, characterized in that: The printed circuit board (1) is provided with a plurality of groups of first limiting holes (12), and the probes (2) are provided with a plurality of groups, the number of groups of the probes (2) being the same as the number of groups of the first limiting holes (12); the fixed blocks (31) are provided with second limiting holes (312) near the first limiting holes (12), and the probes (2) are passed through the first limiting holes (12) and the second limiting holes (312) in sequence and extend out from the bottom wall of the fixed blocks (31).
7. An auxiliary electrical connection device according to claim 6, characterized in that: Each group of the first limiting holes (12) comprises a plurality of first limiting holes (12), each group of the probes (2) comprises a plurality of probes (2), and the number of the probes (2) in each group is consistent with the number of the first limiting holes (12) in each group.
8. An auxiliary electrical connection device according to claim 6, characterized in that: The second limiting hole (312) on the fixing block (31) is a vertical opening.
9. An auxiliary electrical connection device according to claim 6, characterized in that: The second limiting hole (312) on the fixing block (31) is an oblique opening.