Signal terminal structure
By designing the fixed structure of the card block and the card post on the signal terminal of the power module and applying a high-temperature resistant coating, the problem of poor connection stability of the signal terminal in extreme vibration environments is solved, and a more reliable connection and higher stability are achieved.
Patent Information
- Application Number
- CN202421446446.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The signal terminals of existing power modules are prone to slight displacement in extreme vibration environments, resulting in poor connection stability and failure of bonding.
A signal terminal structure is designed. By installing wiring terminals on the motherboard and fixedly connecting the first, second and third clamp posts on the front and rear sides and the outer surfaces, the clamping limit and sliding clamping effects of the clamping blocks and clamping columns are used to enhance the fixing stability of the wiring terminals and apply a high-temperature coating to improve wear resistance.
When installed, this signal terminal structure significantly improves the fixing stability of the terminals through the clamping limit and sliding clamping effect of the clamping block and clamping column, avoids loose connections and bonding failures caused by displacement, and improves the stability of the connection.
Smart Images
Figure CN222690938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power module manufacturing, in particular to a signal terminal structure. Background Art
[0002] The signal terminal of the power module is the bridge connecting the client's circuit board and the internal signal of the module. The signal terminal is connected to the chip through the aluminum wire bonding process. The reliability of the aluminum wire bonding on the signal terminal directly affects the output of the module signal and the electrical performance safety and integrity of the electric control system.
[0003] The power module in the prior art works under extreme vibration environment, and the signal terminal is prone to slight displacement. The bonding area between the signal terminal and the motherboard is relatively small. Due to the existence of gaps in the insertion aperture, if the signal terminal is displaced greatly, it will cause the signal terminal to separate from the bonding wire, resulting in poor connection stability and bonding failure. Therefore, a signal terminal structure is proposed to solve the above problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a signal terminal structure, which has the advantages that when the signal terminal is fixed to the mainboard, the connection is more secure and not prone to loosening and detachment. It solves the problem that the bonding area between the signal terminal and the mainboard is relatively small, and due to the existence of a gap in the insertion aperture, a large displacement of the signal terminal will cause the signal terminal to separate from the bonding wire, thereby resulting in poor connection stability.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a signal terminal structure, including a mainboard, a wiring terminal installed inside the mainboard, a first clamping block fixedly connected to the front and rear sides of the wiring terminal, a second clamping block fixedly connected to the outer surface of the wiring terminal, and a third clamping column fixedly connected to the outer surface of the wiring terminal.
[0006] Furthermore, a circuit board is fixedly connected inside the mainboard, a first card block slot is opened inside the mainboard, the two first card blocks are both square blocks in shape, and the two first card blocks are both located inside the mainboard through the first card block slot.
[0007] Furthermore, the second card block is in the shape of a rectangular block, a rectangular groove is provided inside the main board, and the second card block is located inside the main board through the rectangular groove.
[0008] Furthermore, the third clamping column is spherical in shape, a through hole is provided inside the mainboard, the connection terminal is located inside the mainboard through the through hole, and the third clamping column is slidably engaged with the through hole.
[0009] Furthermore, the outer surface of the terminal block is coated with a high temperature resistant coating.
[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0011] The signal terminal structure has the following advantages: when the terminal is installed inside the mainboard, the terminal is first inserted into the mainboard and then bent, and the bending is performed as shown in the figure. During the insertion, the first clamping block is clamped to limit the position, and then the first clamping block can also increase the stability of the connection when pouring glue, and the connection with the mainboard is more secure; the second clamping block is clamped with the stepped surface of the mainboard to prevent forward and backward sliding; and the third clamping column enables the spherical surface of the terminal to slide and clamp with the through hole when passing through the through hole, thereby filling the gap, and can securely fix the terminal on the corresponding device or circuit board, further improving the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is the front view of the structure of the utility model;
[0013] Figure 2 It is a side view of the structural terminal of the utility model.
[0014] In the figure: 1. Main board; 2. Wiring terminal; 3. First clamp block; 4. Second clamp block; 5. Third clamp column. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0016] See also Figures 1 to 2 A signal terminal structure in this embodiment includes a mainboard 1, a circuit board is fixedly connected to the inside of the mainboard 1, a wiring terminal 2 is installed inside the mainboard 1, and first card blocks 3 are fixedly connected to the front and rear sides of the wiring terminal 2. A first card block groove is opened inside the mainboard 1, and the two first card blocks 3 are both square blocks in shape. The two first card blocks 3 are both located inside the mainboard 1 through the first card block groove.
[0017] The outer surface of the connection terminal 2 is fixedly connected with a second clamping block 4 , which is in the shape of a rectangular block. A rectangular groove is provided inside the mainboard 1 , and the second clamping block 4 is located inside the mainboard 1 through the rectangular groove.
[0018] The outer surface of the connection terminal 2 is fixedly connected with a third clamping column 5, which is spherical in shape. A through hole is opened inside the mainboard 1, and the connection terminal 2 is located inside the mainboard 2 through the through hole. The third clamping column 5 is slidably engaged with the through hole.
[0019] The outer surface of the terminal block 2 is coated with a high temperature resistant coating, which is a ceramic coating with a thickness of 15-20um. The ceramic coating is used to support the high temperature resistance. At the same time, a layer of wear-resistant ceramic coating is attached to the surface, which effectively enhances the surface wear resistance of the metal part and improves the performance of the metal part without increasing its cost.
[0020] The working principle of the above embodiment is:
[0021] The signal terminal structure, when the connection terminal 2 is installed inside the mainboard 1, first the connection terminal 2 is inserted into the mainboard 1 and then bent. Figure 2 When the connection is made, the first clamping block 3 is clamped and limited, and then when the glue is poured, the first clamping block 3 can also increase the stability of the connection, and the connection with the main board 1 is more secure; the second clamping block 4 is clamped with the stepped surface of the main board 1 to prevent the front and rear slippage; and the third clamping column 5 enables the spherical surface of the terminal 2 to slide and clamp with the through hole when the terminal 2 passes through the through hole, which has the effect of filling the gap, and can securely fix the terminal 2 on the corresponding device or circuit board, further improving the connection stability.
[0022] It should be noted that the standard parts used in the application can be purchased from the market, special-shaped parts can be customized according to the description in the specification and drawings, and the specific connection methods of each part adopt mature bolts, rivets, welding, etc. in the prior art, and conventional means. Machinery, parts and equipment all adopt conventional models in the prior art; plus the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A signal terminal structure, comprising a main board (1), characterized in that: A connection terminal (2) is installed inside the mainboard (1), a first clamping block (3) is fixedly connected to both the front and rear sides of the connection terminal (2), a second clamping block (4) is fixedly connected to the outer surface of the connection terminal (2), and a third clamping column (5) is fixedly connected to the outer surface of the connection terminal (2).
2. A signal terminal structure according to claim 1, characterized in that: A circuit board is fixedly connected to the interior of the main board (1), a first card block slot is provided inside the main board (1), the two first card blocks (3) are both in the shape of square blocks, and the two first card blocks (3) are both located inside the main board (1) through the first card block slot.
3. A signal terminal structure according to claim 1, characterized in that: The second card block (4) is in the shape of a rectangular block, a rectangular groove is provided inside the main board (1), and the second card block (4) is located inside the main board (1) through the rectangular groove.
4. The signal terminal structure according to claim 1, characterized in that: The third clamping column (5) is spherical in shape, a through hole is provided inside the main board (1), the connection terminal (2) is located inside the main board (1) through the through hole, and the third clamping column (5) is slidably engaged with the through hole.
5. The signal terminal structure according to claim 1, characterized in that: The outer surface of the wiring terminal (2) is coated with a high temperature resistant coating.