Device for limiting and fixing device
By designing a device limiting and fixing device, the problem of misalignment during the welding process of IGBT modules and PCB boards was solved, achieving precise positioning and fixing of IGBT modules, improving welding stability and production efficiency, and ensuring the consistency of device spacing and the safety of PCB operation.
Patent Information
- Application Number
- CN202423195426.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In the existing technology, there is a misalignment problem in the welding process of IGBT modules and PCB boards, and the traditional fixtures are inconvenient to replace, making it difficult to meet the requirements of high-quality welding.
A device limiting and fixing device is adopted, including components such as a carrier base plate, PCB positioning pin, limiting spring top PIN, limiting pressure strip and toggle structure. Through the cooperation of the limiting spring top PIN and the limiting pressure strip, the IGBT module is accurately positioned and fixed, ensuring the consistency of position and height during the welding process.
It improves the stability and production efficiency of IGBT module soldering, ensures the consistency of device spacing, enhances the safety and stability of PCB operation, and shortens the work cycle.
Smart Images
Figure CN223859638U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of limit fixing, specifically a device limit fixing device. BACKGROUND
[0002] As a kind of power semiconductor device, IGBT module is widely used in rail transit, intelligent power grid, industrial energy saving, electric vehicle and new energy equipment and other fields. With energy saving, easy installation, easy maintenance, heat dissipation stability and other characteristics. It is the core device of energy conversion and transmission. In prior art, IGBT module and PCB board are mainly fixed by wave soldering. In order to solve the problem of deviation of IGBT module and PCB board before welding and in the process of welding, special jig is needed to fix IGBT module and PCB board, so that it will not deviate before and after welding.
[0003] The existing technology mostly uses wave soldering, but there are certain limitations in its application, that is, different welding parameters. Different welding points on the same circuit board may be quite different in welding parameters required due to their different characteristics (such as heat capacity, pin pitch, tin penetration requirement, etc.), but the feature of wave soldering is to complete the welding of all welding points on the whole circuit board under the same set parameters, so different welding points need to "make do" with each other, which makes it difficult for wave soldering to completely meet the welding requirements of high-quality circuit boards. In order to solve this technical problem, wave soldering needs to be changed to selective wave soldering, which uses numerical control principle to realize point wave soldering, that is, selective wave soldering. In the welding process, positioning welding needs to be completed, which requires the use of jig to clamp workpieces such as circuit board, but the traditional jig is generally composed of a frame and bolts, which clamps the circuit board by bolts. As a result, it is very troublesome to replace the circuit board or workpiece every time. In order to solve this problem, device limit fixing device is used to fix welding device, which not only saves cost but also improves efficiency, and also reduces the generation of defective products. Therefore, a device limit fixing device is proposed. Utility model content
[0004] (I) Technical problem solved
[0005] In view of the deficiencies of prior art, the utility model provides a device limit fixing device to solve the problems in the above background art.
[0006] (II) Technical scheme
[0007] To achieve the above purpose, the utility model provides the following technical scheme: a device limit fixing device, comprising:
[0008] The vehicle base plate and PCB board are provided. The interior of the vehicle base plate is provided with PCB positioning pins and component soldering slots. The interior of the component soldering slots is provided with limiting grooves. The interior of the vehicle base plate is also provided with PCB slots. The upper side of the vehicle base plate is provided with a second component buckle and a first component buckle. A limiting spring top PIN is provided above the component soldering slots. A limiting pressure strip is provided above the limiting spring top PIN. A limiting pressure strip positioning post is provided on the upper left side of the limiting pressure strip. A pressure head is fixedly installed above the limiting pressure strip.
[0009] An elbow structure is located on the outer side of the pressure head and is connected to the base plate of the carrier. A pressure handle is connected to the top of the elbow structure.
[0010] PCB clips are installed on both sides of the outer side of the vehicle's base plate.
[0011] Preferably, the limiting pressure strip positioning post is connected to the carrier base plate, and the limiting spring top PIN is connected to the carrier base plate.
[0012] Preferably, the limiting spring top PIN is symmetrically arranged about the vertical centerline of the vehicle base plate.
[0013] Preferably, the lower end of the toggle structure is connected to the pressure head, and the rear end of the toggle structure is connected to the pressure handle.
[0014] Preferably, the PCB clip is rotatably connected to the carrier base plate.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, the present invention provides a device for limiting and fixing components, which has the following advantages:
[0017] 1: This utility model uses the limiting spring top PIN and limiting pressure strip to fix the IGBT module, so that it keeps the plug-in terminals stable during welding, which improves production efficiency and provides great convenience for product delivery. By placing the PCB into the fixture and embedding the structural module, the fixture makes full use of the limiting PIN to fix the IGBT module, which solves the technical problem that the position and height of the IGBT module cannot be unified during welding, resulting in poor performance of other devices.
[0018] 2: The utility model discloses a limit spring top PIN and limit pressure bar to determine and fix the position of device, and the spring top PIN will first adjust the size height, makes the device of PCB board to reach the size height of requirement, and then through the pressure equipment of limit pressure bar, fixes a plurality of devices on the same reference surface, guarantees the consistency of device fixation, and further guarantees the safety of PCB operation, and the safe distance between a plurality of devices is pulled apart simultaneously, is favorable to the uniform heat dissipation of device, improves its operating stability, shortens the working cycle, improves production efficiency, and provides the convenience for production. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is whole structure schematic diagram of the utility model;
[0020] Figure 2 It is combined use schematic diagram of the utility model.
[0021] In the drawing: 1, carrier bottom plate;2, first device pressure buckle;3, second device pressure buckle;4, PCB pressure buckle;5, PCB slot position;6, PCB positioning pin;7, limit recess;8, IGBT module;9, pressure handle;10, limit pressure bar;11, limit spring top PIN;12, pressure head;13, toggle structure;14, device welding slot position;15, PCB board position;16, limit pressure bar positioning column. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.
[0023] The utility model provides a technical scheme, a device limiting and fixing device for, please refer to Figure 1 And Figure 2 , comprising:
[0024] Carrier bottom plate 1 and PCB board position 15, the inside of carrier bottom plate 1 is provided with PCB positioning pin 6 and device welding slot position 14, the inside of device welding slot position 14 is provided with limit recess 7, the inside of carrier bottom plate 1 is further provided with PCB slot position 5, the upper end one side of carrier bottom plate 1 is provided with second device pressure buckle 3 and first device pressure buckle 2, the top of device welding slot position 14 is provided with limit spring top PIN 11, the top of limit spring top PIN 11 is provided with limit pressure bar 10, the left side upper end of limit pressure bar 10 is provided with limit pressure bar positioning column 16, and pressure head 12 is fixedly installed on the top of limit pressure bar 10;
[0025] The toggle structure 13 is arranged on the outer side of the pressing head 12, and the toggle structure 13 is connected with the carrier bottom plate 1, and the upper end of the toggle structure 13 is connected with the pressing handle 9.
[0026] The PCB pressing buckles 4 are arranged on the outer sides of the carrier bottom plate 1.
[0027] Please refer to Figure 2 The limiting pressing strip positioning column 16 is connected with the carrier bottom plate 1, and the limiting spring top PIN 11 is connected with the carrier bottom plate 1.
[0028] Please refer to Figure 1 , and Figure 2 The limiting spring top PIN 11 is symmetrically arranged about the vertical center line of the carrier bottom plate 1.
[0029] Please refer to Figure 1 , and Figure 2 The lower end of the toggle structure 13 is connected with the pressing head 12, and the rear end of the toggle structure 13 is connected with the pressing handle 9, and the pressing handle 9 is used for controlling the movement of the toggle structure 13.
[0030] Please refer to Figure 1 , and Figure 2 The PCB pressing buckles 4 are rotationally connected with the carrier bottom plate 1, and the PCB pressing buckles 4 are used for limiting and fixing the PCB board 15.
[0031] The scheme: in order to make the device in the precise spacing with PCB board, solve the device vibration caused by welding process, resulting in device offset, loose solder and spacing offset and other quality problems, through the PCB pressure buckle 4 fixed PCB board, install auxiliary parts through the first device pressure buckle 2 and the second device pressure buckle 3 limit, IGBT module 8 is installed in the limiting groove 7, the limiting spring PIN 11 is supported by the IGBT module 8, the limiting spring PIN 11 is higher than the PCB slot 5 by one hundred microns, the limiting spring PIN 11 is a cylindrical travel hidden spring mechanism, the IGBT module 8 is placed behind the limiting spring PIN 11, and the PCB slot 5 is composed of front and rear limiting, at the same time, the IGBT module 8 is used for height limiting of the IGBT module 8 after the limiting size, the toggle structure 13 is a lever connecting rod structure, the operator manually takes the PCB board first, cooperates with the PCB positioning pin 6 to guide and position the PCB board, places the PCB board in the PCB slot 5, and then rotates the PCB pressure buckle 4 by 180 DEG to press the PCB board 15, the operator manually takes the IGBT module 8 secondly, the IGBT module 8 is directly placed on the limiting spring PIN 11, the limiting spring PIN 11 abuts against the bottom of the IGBT module 8, and is used for determining the position of the welding device, the operator manually takes the limiting pressure strip 10 thirdly, uses the limiting pressure strip 10 to press the IGBT module 8 and adhere to it, and then uses the limiting pressure strip positioning column 16 to press the limiting pressure strip 10, prevents the limiting pressure strip 10 from being separated from the IGBT module 8, and is used for fixing the position of the welding device, the operator manually takes the pressure handle 9 fourthly, vertically presses the pressure handle 9, drives the pressure head 12 to be perpendicular to the surface of the limiting pressure strip 10 through the sliding of the pressure handle 9 and the toggle structure 13, is used for fixing the position of the PCB board and the limiting pressure strip 10, makes the IGBT module 8 keep position and height uniform during welding, the pressure head 12 presses the limiting pressure strip 10 downwards, the limiting pressure strip 10 presses the IGBT module 8, the limiting spring PIN 11 abuts against the IGBT module 8, and the front, rear, left and right and upper and lower spacing of the IGBT module 8 is limited comprehensively.
[0032] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.
[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device limiting fixing device, characterized in that, Include: The carrier bottom plate (1) and the PCB board site (15), the inside of the carrier bottom plate (1) is provided with PCB positioning pin (6) and device welding slot (14), the inside of the device welding slot (14) is provided with limiting groove (7), the inside of the carrier bottom plate (1) is also provided with PCB slot (5), the upper end of the carrier bottom plate (1) one side is provided with second device pressing buckle (3) and first device pressing buckle (2), the upper of the device welding slot (14) is provided with limiting spring top PIN (11), the upper of the limiting spring top PIN (11) is provided with limiting pressing strip (10), the left upper end of the limiting pressing strip (10) is provided with limiting pressing strip positioning column (16), the upper of the limiting pressing strip (10) is fixedly installed with pressing head (12); Wrist structure (13) is arranged on the outside of the pressing head (12), and the wrist structure (13) is connected with the carrier bottom plate (1), the upper of the wrist structure (13) is connected with the pressing handle (9); PCB pressing buckle (4) is arranged on the outside of the carrier bottom plate (1).
2. The device limiting and fixing device according to claim 1, characterized in that: The limiting pressing strip positioning column (16) is connected with the carrier bottom plate (1), and the limiting spring top PIN (11) is connected with the carrier bottom plate (1).
3. The device limiting and fixing device according to claim 1, characterized in that: The limiting spring top PIN (11) is vertically symmetrical about the vertical center line of the carrier bottom plate (1).
4. The device limiting and fixing device according to claim 1, characterized in that: The lower end of the wrist structure (13) is connected with the pressing head (12), and the rear end of the wrist structure (13) is connected with the pressing handle (9).
5. The device limiting and fixing device according to claim 1, characterized in that: The PCB pressing buckle (4) is rotatably connected with the carrier bottom plate (1).