Capacitor fixing structure

Abstract

The utility model discloses a capacitor fixing structure comprising a housing and a welding assembly, and the housing is provided with a bolt and a positioning table; the welding assembly is provided with fixing strips and inserting holes matched with the plug pins, and the fixing strips are located on the two sides of the inserting holes. The bolt comprises a guide part and a connecting part, the guide part is fixed on the shell through the connecting part, and the cross sectional area of the guide part is gradually increased in the direction close to the connecting part; the plug pin is inserted into the inserting hole through the guiding part and enables the fixing strip to be pressed on the connecting part to be fixedly connected with the welding assembly. By arranging the shell and the welding assembly, the guide parts can be quickly inserted into the insertion holes, so that the fixing strips are pressed to the two sides of the connecting part, and it is guaranteed that the shell and the welding assembly can be accurately positioned and connected; meanwhile, on the premise that an external fixing device is not used, loosening and displacement of the shell and the welding assembly in the injection molding process are effectively prevented, the production process of the capacitor is simplified, the production yield of the capacitor is improved, and the production cost of the capacitor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a capacitor fixing structure. Background Art

[0002] Film capacitors use metal foil as electrodes, overlapped with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate, and then rolled into a cylindrical shape. During capacitor production, the capacitor's soldered components are inserted into the capacitor's casing, then epoxy resin is poured from the opening of the casing. After the resin hardens, the soldered components and the casing are fixed together, forming the capacitor. During the resin encapsulation process, the soldered components are placed inside the casing. Because there is no fixed structure between the two, they are susceptible to relative positional shifting due to external forces. Therefore, an encapsulation jig is required to secure the soldered components and the casing before epoxy resin is poured into the finished product. This jig prevents relative positional shifting between the soldered components and the casing during the resin curing period. However, the jig requires debugging and customization, which affects capacitor production efficiency and increases production costs. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present invention is to provide a capacitor fixing structure that can stably and accurately fix the housing and welding components, improve the stability of the capacitor fixing structure, and reduce the production cost of the capacitor.

[0004] The technical solution adopted by the utility model to solve the problem is:

[0005] A capacitor fixing structure comprises: a housing and a welding assembly, wherein the housing is provided with a latch and a positioning platform; the welding assembly is provided with a fixing strip and a socket that cooperates with the latch, the fixing strip being located on either side of the socket; the latch comprises a guide portion and a connecting portion, the guide portion being fixed to the housing via the connecting portion, the cross-sectional area of the guide portion gradually increasing in a direction approaching the connecting portion; the latch is inserted into the socket via the guide portion, and the fixing strip is pressed onto the connecting portion to be fixedly connected to the welding assembly.

[0006] The above-mentioned capacitor fixing structure has at least the following beneficial effects: by providing the housing and the welding assembly, the guide part can be quickly inserted into the socket so that the fixing strip is pressed onto both sides of the connection part, ensuring that the housing and the welding assembly can be accurately positioned and connected; at the same time, without using an external fixing device, the housing and the welding assembly are effectively prevented from loosening and displacement during the injection molding process, thereby simplifying the production process of the capacitor, improving the production yield of the capacitor, and reducing the production cost of the capacitor.

[0007] Furthermore, the number of the pins and the number of the sockets are both two. The two pins and sockets can effectively improve the connection stability between the housing and the welding assembly, prevent the pins and sockets from loosening, and ensure the integrity of the capacitor fixing structure.

[0008] Furthermore, the connecting portion is in the shape of a rectangular parallelepiped. This structure ensures that the fixing strips can be quickly and stably pressed onto both sides of the connecting portion, so that the pin is fixed in the socket, thereby improving the stability of the capacitor fixing structure.

[0009] Furthermore, the guide portion is in the form of a cone. This structure ensures the connection stability between the guide portion and the connecting portion, and ensures the integrity and structural stability of the bolt.

[0010] Furthermore, the length directions of the two insertion holes are perpendicular to each other. This structure effectively prevents the two pins from being loosened from the insertion holes at the same time, thereby improving the connection stability between the housing and the welding assembly.

[0011] Furthermore, the fixing bar is integrally formed with the welding assembly and extends upward, with the length of the fixing bar forming an acute angle with the plane of the welding assembly. This structure ensures the structural integrity of the welding assembly, ensuring that the fixing bar can be pressed onto the latch, while also preventing the fixing bar from falling during use, which would affect the stability of the connection between the housing and the welding assembly.

[0012] Furthermore, the cross section of the fixing bar is rectangular. This structure ensures the structural strength of the fixing bar, prevents the fixing bar from being deformed and damaged during the process of clamping the pin, and improves the service life of the capacitor fixing structure.

[0013] Furthermore, the welding assembly is made of copper, and its hardness is either greater than or less than the hardness of the connecting portion. Copper has excellent electrical and thermal conductivity and is widely used in electrical equipment such as power transmission and converters. The use of copper as the welding assembly facilitates capacitor lead assembly. The inconsistency between the hardness of the welding assembly and the connecting portion creates an indentation during assembly, ensuring that the fixing bar can stably hold the latch, thereby improving the stability of the capacitor fixing structure.

[0014] Furthermore, the distance between adjacent fixing bars is smaller than the width of the latch. This allows the fixing bars to deform and generate a rebound force during the process of clamping the latch, causing the fixing bars to embed into the surface of the latch, preventing the housing and the welding assembly from loosening and improving the stability of the capacitor fixing structure.

[0015] Furthermore, the positioning platforms are evenly distributed on the outside of the latch. This structure ensures that the positioning platforms can stably support the welding assembly, preventing tilting and inaccurate positioning of the housing and welding assembly during connection, and improving the ease of use of the capacitor fixing structure.

[0016] The beneficial effects of the above-mentioned capacitor fixing structure are: by setting the shell and the welding assembly, the guide part can be quickly inserted into the socket so that the fixing strip can be pressed onto both sides of the connection part, ensuring that the shell and the welding assembly can be accurately positioned and connected; at the same time, without using an external fixing device, it effectively prevents the shell and the welding assembly from loosening and displacement during the injection molding process, simplifies the production process of the capacitor, improves the production yield of the capacitor, and reduces the production cost of the capacitor; by setting the positioning table, the positioning table can stably support the welding assembly, avoiding tilting and inaccurate positioning of the shell and the welding assembly during the connection process, thereby improving the convenience of use of the capacitor fixing structure.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a capacitor fixing structure according to an embodiment of the present utility model;

[0019] Figure 2 This is a structural exploded view of a capacitor fixing structure according to an embodiment of the present utility model;

[0020] Figure 3 This is a side view of a capacitor fixing structure according to an embodiment of the present utility model;

[0021] Figure 4 This is a top view of a capacitor fixing structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] Reference Figures 1 to 4The embodiment of the utility model provides a capacitor fixing structure, including: a housing 100 and a welding assembly 200, wherein the housing 100 is provided with a latch 110 and a positioning platform 120; the welding assembly 200 is provided with a fixing bar 210 and a socket 220 cooperating with the latch 110, and the fixing bar 210 is located on both sides of the socket 220; the latch 110 includes a guide portion 111 and a connecting portion 112, the guide portion 111 is fixed to the housing 100 through the connecting portion 112, and the cross-sectional area of the guide portion 111 gradually increases in the direction approaching the connecting portion 112; the latch 110 is inserted into the socket 220 through the guide portion 111 and the fixing bar 210 is pressed onto the connecting portion 112 to be fixedly connected to the welding assembly 200.

[0024] By setting up the shell 100 and the welding assembly 200, the guide part 111 can be quickly inserted into the socket 220 so that the fixing bar 210 is pressed onto both sides of the connecting part 112, ensuring that the shell 100 and the welding assembly 200 can be accurately positioned and connected; at the same time, without using an external fixing device, the shell 100 and the welding assembly 200 are effectively prevented from loosening and displacement during the injection molding process, simplifying the production process of the capacitor, improving the production yield of the capacitor, and reducing the production cost of the capacitor.

[0025] In another embodiment, the number of both the latch 110 and the socket 220 is two. This number effectively improves the connection stability between the housing 100 and the welding assembly 200, prevents the latch 110 and the socket 220 from becoming loose, and ensures the integrity of the capacitor fixing structure. Of course, in other embodiments, the latch 110 and the socket 220 can be arranged in a different number, for example, three latches 110 and three sockets 220, which can still ensure a stable connection between the housing 100 and the welding assembly 200. This is not a limitation here.

[0026] In another embodiment, the connecting portion 112 is conical. This structure ensures that the fixing strips 210 can be quickly and stably pressed onto both sides of the connecting portion 112, thereby securing the pin 110 within the socket 220 and improving the stability of the capacitor fixing structure. In other embodiments, the connecting portion 112 can also form an acute angle with the plane of the welding assembly 200 to ensure that the connecting portion 112 is accurately and stably secured within the socket 220, preventing displacement or even loosening of the housing 100 and the welding assembly 200.

[0027] In another embodiment, the cross section of the guide portion 111 is rectangular. This structure ensures the connection stability between the guide portion 111 and the connecting portion 112, and ensures the integrity and structural stability of the latch 110.

[0028] In another embodiment, the length directions of the two insertion holes 220 are perpendicular to each other. This structure effectively prevents the two latches 110 from being loosened from the insertion holes 220 at the same time, thereby improving the connection stability between the housing 100 and the welding assembly 200.

[0029] Reference Figure 3 In another embodiment, a fixing bar 210 is integrally formed with the welding assembly 200 and extends upward. The angle α formed between the length of the fixing bar 210 and the plane of the welding assembly 200 is acute. This structure ensures the structural integrity of the welding assembly 200 and the ability of the fixing bar 210 to be pressed onto the latch 110. It also prevents the fixing bar 210 from falling during use, which could affect the stability of the connection between the housing 100 and the welding assembly 200.

[0030] In another embodiment, the cross section of the fixing bar 210 is rectangular. This structure ensures the structural strength of the fixing bar 210, prevents the fixing bar 210 from being deformed and damaged during the process of clamping the latch 110, and improves the service life of the capacitor fixing structure.

[0031] In another embodiment, the welding assembly 200 is made of copper, with the hardness of the welding assembly 200 being greater or less than the hardness of the connecting portion 112. Copper has excellent electrical and thermal conductivity and is widely used in electrical equipment such as power transmission and converters. The use of copper in the welding assembly 200 facilitates capacitor lead assembly. The inconsistency between the hardness of the welding assembly and the connecting portion results in an indentation during assembly between the welding assembly 200 and the connecting portion 112, ensuring that the fixing bar 210 can stably hold the latch 110 and improving the stability of the capacitor fixing structure.

[0032] In another embodiment, the distance between adjacent fixing bars 210 is smaller than the width of the latch 110. This distance between the fixing bars 210 is smaller than the width of the latch 110, allowing the fixing bars 210 to deform and generate a rebound force when clamping the latch 110, causing the fixing bars 210 to embed into the surface of the latch 110, preventing the housing 100 and the welding assembly 200 from loosening and improving the stability of the capacitor fixing structure.

[0033] In another embodiment, the positioning platforms 120 are evenly distributed on the outside of the pins 110. This structure ensures that the positioning platforms 120 can stably support the welding assembly 200, avoids tilting and inaccurate positioning of the housing 100 and the welding assembly 200 during the connection process, and improves the ease of use of the capacitor fixing structure. Specifically, the two mutually perpendicular connecting parts 112 are fixed by the fixing bar 210 to realize the positioning function on the plane where the welding assembly 200 is located. At the same time, the depth of the insertion of the pin 110 into the socket 220 is limited by the positioning platform 120, and the size of the welding assembly 200 in the vertical direction is controlled by setting the height of the positioning platform 120, so as to realize accurate positioning of the housing 100 and the welding assembly 200 in the vertical direction.

[0034] In another embodiment, the positioning platform 120 is cylindrical. This structure ensures the structural stability of the positioning platform 120, increases the contact area between the positioning platform 120 and the welding assembly 200, prevents the positioning platform 120 from being damaged during use, and ensures the stability of the connection between the housing 100 and the welding assembly 200.

[0035] The working principle of the present utility model is further described below.

[0036] In the prior art, during the capacitor injection molding process, a packaging jig is used to ensure that the relative position of the welding assembly 200 and the housing 100 is not shifted due to external forces during the resin curing period. Therefore, the use of packaging jigs has the following disadvantages: First, the jig cost is high. Since multiple sets of packaging jigs need to be customized according to capacitors of different specifications, the production cost of the jig is increased. At the same time, since different packaging jigs need to be designed for film capacitors of different shapes, design resources are consumed and design investment is increased. Second, the production cycle of the capacitor is extended. Since the jig production cycle is long and the jig identification, installation and commissioning take a long time, it affects the overall development schedule. At the same time, since the jig is large in size, it occupies curing resources and affects production efficiency. Third, the packaging jig has a low universality rate. Since the jig is difficult to reuse for different projects, the reuse efficiency of the packaging jig is low. Finally, a large number of packaging jigs will take up a lot of storage space. After the production cycle is completed, the idle packaging jigs will occupy factory space, wasting space resources and increasing additional maintenance costs.

[0037] During the use of the capacitor fixing structure of this embodiment, first, according to the specifications of the capacitor, the plug 110 and the socket 220 are respectively provided on the housing 100 and the welding assembly 200, so that the housing 100 and the welding assembly 200 can be accurately positioned and installed; before installation, the distance between the fixing bars 210 on both sides of the socket 220 is less than the width of the connecting portion 112; during the installation process, the plug 110 is inserted into the socket 220 to press the welding assembly 200 onto the housing 100. Since the distance between the fixing bars 210 is less than the width of the connecting portion 112, the fixing bars 210 are forced to deform, and at the same time The reaction force generated by the deformation causes the fixing bar 210 to clamp the connecting portion 112 and continue to press the welding assembly 200 until the positioning platform 120 fits the welding assembly 200; after the fixed installation is completed, the fixing bar 210 clamps the positioning pin. When an external force causes the welding assembly 200 and the housing 100 to have a relative displacement tendency, due to the clamping force between the fixing bar 210 and the connecting portion 112, and the material hardness of the fixing bar 210 is greater than the material hardness of the pin 110, the welding assembly 200 will be embedded in the housing 100, effectively preventing the welding assembly 200 from being displaced during the injection molding process, thereby achieving the fixation of various components in the capacitor.

[0038] At the same time, since there are two pins 110 and two sockets 220, and the lengths of the two sockets 220 are perpendicular to each other, the fixing bar 210 fixes the two mutually perpendicular connecting portions 112, thereby achieving the positioning function on the plane where the welding assembly 200 is located. In addition, the positioning platform 120 limits the depth of the pin 110 inserted into the socket 220, and the height of the positioning platform 120 is set to control the vertical dimension of the welding assembly 200, thereby achieving precise vertical positioning of the housing 100 and the welding assembly 200. In this way, during the injection molding process of the capacitor, there is no need to set up an additional packaging jig, which saves the production cost and maintenance cost of the packaging jig; since the housing 100 and the welding assembly 200 are fixed by the pin 110 and the socket 220, there is no need to set up a slider design for the housing 100 in the production equipment, which simplifies the design and maintenance cost of the production equipment; secondly, it also effectively reduces the design investment of the packaging jig, and only needs to design a tray to support the capacitor fixing structure, reducing labor input; in addition, since there is no need for jig identification and installation, the process is reduced, the production cycle of the capacitor is effectively shortened, and the overall development schedule of the project is accelerated; in addition, the capacitor fixing structure improves the versatility of the capacitor, increases storage space, and improves the utilization rate of factory space.

[0039] From the above description, it can be seen that the capacitor fixing structure of the present invention is provided with a shell 100 and a welding assembly 200, and the guide part 111 can be quickly inserted into the socket 220 so that the fixing bar 210 is pressed onto both sides of the connecting part 112, thereby ensuring that the shell 100 and the welding assembly 200 can be accurately positioned and connected; at the same time, without using an external fixing device, it effectively prevents the shell 100 and the welding assembly 200 from loosening and displacement during the injection molding process, simplifies the production process of the capacitor, improves the production yield of the capacitor, and reduces the production cost of the capacitor; by providing a positioning platform 120, the positioning platform 120 can stably support the welding assembly 200, thereby avoiding tilting and inaccurate positioning of the shell 100 and the welding assembly 200 during the connection process, thereby improving the convenience of use of the capacitor fixing structure.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A capacitor fixing structure, characterized in that: include: A shell and a welding assembly, wherein the shell is provided with a latch and a positioning platform; the welding assembly is provided with a fixing strip and a socket that cooperates with the latch, and the fixing strip is located on both sides of the socket; the latch includes a guide portion and a connecting portion, the guide portion is fixed to the shell through the connecting portion, and the cross-sectional area of the guide portion gradually increases in the direction approaching the connecting portion; the latch is inserted into the socket through the guide portion and the fixing strip is pressed onto the connecting portion to be fixedly connected to the welding assembly.

2. The capacitor fixing structure according to claim 1, characterized in that: There are two pins and two sockets.

3. The capacitor fixing structure according to claim 2, characterized in that: The connecting portion is in the shape of a cuboid.

4. The capacitor fixing structure according to claim 3, characterized in that: The guide portion is in the form of a cone.

5. The capacitor fixing structure according to claim 3, characterized in that: The length directions of the two jacks are perpendicular to each other.

6. The capacitor fixing structure according to claim 1, characterized in that: The fixing bar is integrally formed with the welding assembly and extends upward, and the angle formed by the length direction of the fixing bar and the plane where the welding assembly is located is an acute angle.

7. The capacitor fixing structure according to claim 6, characterized in that: The cross section of the fixing strip is rectangular.

8. The capacitor fixing structure according to claim 6, characterized in that: The welding assembly is made of copper, and the hardness of the welding assembly is greater than or less than the hardness of the connecting portion.

9. The capacitor fixing structure according to claim 8, characterized in that: The distance between adjacent fixing bars is smaller than the width of the latch.

10. The capacitor fixing structure according to claim 1, characterized in that: The positioning platforms are evenly distributed on the outside of the latch.

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