A capacitor structure for mahjong machine
By installing protective sleeves and reinforcing sleeves in the capacitors used in mahjong machines to protect the leads, the problem of easy lead breakage is solved, the fault tolerance and processing yield of the equipment are improved, and the stable operation of the capacitors is ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FENGHUA HENGCHI ELECTRONICS CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-06-23
AI Technical Summary
In the structure of capacitors used in mahjong machines, the leads are prone to breakage due to frequent bending during transportation and use. After breakage, the broken end is flush with the potting compound, making it difficult to re-solder and affecting the normal operation of the equipment.
A structure including a capacitor body, a shell, leads, a potting compound, and a protective sleeve was designed. The protective sleeve and reinforcing sleeve protect the leads, prevent bending, and facilitate resoldering in case of lead breakage.
This improves the protection of the leads, prevents breakage, increases the fault tolerance and processing yield of the equipment, and ensures the stable operation of the capacitor.
Smart Images
Figure CN224400226U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of capacitor technology, and in particular to a capacitor structure for a mahjong machine. Background Technology
[0002] Capacitors in mahjong machines are electronic components used to store and release electrical energy. They play a crucial role in the machine's circuitry, acting as voltage stabilizers, filters, and couplers. Their performance and quality directly affect the machine's normal operation. In power circuits, the conversion of alternating current (AC) to direct current (DC) often introduces fluctuations and ripple. Capacitors smooth these fluctuations by storing and releasing electrical energy, resulting in a more stable DC output voltage and providing a clean and stable power supply to the various electronic components of the mahjong machine. For example, electrolytic capacitors on a motherboard effectively filter out noise in the power supply, ensuring the normal operation of precision components such as the CPU and chips.
[0003] The manufacturing process of the capacitor structure for mahjong machines involves preparing high-purity electrode materials, dielectric films, and other raw materials, winding or stacking them to form a core, welding leads, encapsulating and energizing them, and then sorting, packaging, and warehousing them after passing electrical performance and environmental reliability tests.
[0004] During the encapsulation process, the core and lead wires are first installed into the housing, and then potting compound is poured in for encapsulation. The part where the lead wires are connected to the potting compound is protected by the potting compound. Since the lead wires are easy to bend, the part of the lead wires that is close to the potting compound but not in contact with the potting compound is easily broken during transportation and use due to frequent bending. After the break, the break is flush with the potting compound, making it inconvenient to re-solder the lead wires. Therefore, there is an urgent need for a mahjong machine capacitor structure that provides stronger protection for this section of the lead wires. Utility Model Content
[0005] This application provides a more robust capacitor structure for mahjong machines.
[0006] The technical solution for a capacitor structure used in a mahjong machine provided in this application is as follows:
[0007] A capacitor structure for a mahjong machine includes a capacitor body and a shell. Leads are welded to both sides of the capacitor body. The shell has a placement groove. The capacitor body and the leads are disposed in the placement groove, and a potting space is formed between them and the shell. A potting compound layer is disposed in the potting space. A cover plate is connected to the shell. The cover plate includes a plate body and two protective sleeves. The two protective sleeves are connected to both sides of the main plate body. The main plate body is embedded in the placement groove and overlaps the potting compound layer. It is fixed to the shell by a first bolt. The two protective sleeves are respectively fitted around the outer periphery of the leads and connected to the shell.
[0008] Preferably, the placement groove includes a first groove and a second groove. The cross-sectional dimension of the second groove is smaller than that of the first groove, and the cross-sectional dimension of the first groove is larger than that of the capacitor body. The capacitor body is disposed in the first groove. The potting compound layer is disposed between the capacitor body and the groove wall of the first groove and is disposed on the outer layer of the capacitor body. The main board is embedded in the second groove and overlaps the potting compound layer.
[0009] Preferably, the first groove body has wire grooves formed on both sides along the transverse direction, the cross-sectional diameter of the wire groove is larger than the cross-sectional diameter of the lead wire, the lead wire passes through the wire groove, and the potting adhesive layer is disposed between the lead wire and the wire groove.
[0010] Preferably, there are multiple first bolts, which are longitudinally distributed on both sides of the main board body. The first bolts are sequentially inserted into the main board body and the outer shell, and the two protective sleeves are transversely distributed on both sides of the main board body.
[0011] Preferably, the lead wire is connected to a reinforcing sleeve, the reinforcing sleeve includes a main sleeve body and a fixing plate, the main sleeve body is perpendicularly distributed to the fixing plate, the main sleeve body is sleeved on the lead wire and overlaps the upper surface of the protective sleeve, and the fixing plate is fixed to the side of the outer shell by a second bolt.
[0012] Preferably, the protective sleeve includes an inner sleeve and an outer sleeve, the outer sleeve being fitted over the outside of the inner sleeve, and the inner sleeve being fitted over the lead wire; the inner sleeve is made of a flexible material, and the outer sleeve is made of a rigid material.
[0013] Preferably, the upper end of the outer sleeve is formed with a positioning groove, and the lower end of the main sleeve is formed with a positioning protrusion corresponding to the positioning groove, the positioning protrusion passing through the positioning groove.
[0014] In summary, this application includes at least one of the following beneficial technical effects:
[0015] 1. This application uses a main body to enclose the second groove, thus isolating the potting compound layer from the outside and protecting it. This, in turn, protects the capacitor body inside the casing and the connection between the capacitor body and the lead wire. By setting a protective sleeve on the lead wire and connecting the protective sleeve to the casing, the part of the lead wire extending out of the casing and close to the casing is protected by the protective sleeve. When the lead wire is bent under stress, the protective sleeve can ensure that the part of the lead wire does not bend and avoid breakage. If the lead wire outside the protective sleeve breaks, the protective sleeve can be removed and the part of the lead wire originally located inside the protective sleeve can be re-soldered with a new lead wire, thereby improving the fault tolerance rate during lead wire operation.
[0016] 2. By setting up the motherboard body and protective sleeve, the potting compound layer and leads can be protected from damage.
[0017] 3. Fix the main body by inserting the first bolt, then put the two main sleeves on the two lead wires in sequence and move them to overlap the protective sleeve. Finally, fix the reinforcing sleeve to the outer shell by inserting the second bolt. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application. Figure 1 .
[0019] Figure 2 This is a schematic diagram of the overall structure of a preferred embodiment of this application. Figure 2 .
[0020] Figure 3 This is a schematic diagram of the outer casing in a preferred embodiment of this application.
[0021] Figure 4 This is a schematic diagram of the capacitor body in a preferred embodiment of this application.
[0022] Figure 5 This is a cross-sectional view of the connection structure between the capacitor body and the outer casing in a preferred embodiment of this application.
[0023] Figure 6 yes Figure 5 Enlarged view of section A.
[0024] Figure 7 This is a schematic diagram of the plate structure in a preferred embodiment of this application.
[0025] Explanation of reference numerals in the attached drawings: 1. Capacitor body; 2. Outer shell; 21. Placement groove; 211. First groove; 212. Second groove; 213. Wire groove; 3. Lead wire; 4. Encapsulating layer; 5. Cover plate; 51. Plate; 52. Protective sleeve; 521. Inner sleeve; 522. Outer sleeve; 5221. Positioning groove; 53. First bolt; 6. Reinforcing sleeve; 61. Main sleeve; 611. Positioning protrusion; 62. Fixing plate; 63. Second bolt. Detailed Implementation
[0026] The present application will be further described in detail below with reference to the accompanying drawings.
[0027] This application provides a capacitor structure for a mahjong machine, such as... Figures 1 to 7 As shown, it includes a capacitor body 1 and a shell 2, with leads 3 welded to both sides of the capacitor body 1.
[0028] like Figures 1 to 3As shown, the outer casing 2 has a placement groove 21, which includes a first groove 211 and a second groove 212. The cross-sectional dimension of the second groove 212 is smaller than that of the first groove 211, and the cross-sectional dimension of the first groove 211 is larger than that of the capacitor body 1. The capacitor body 1 is disposed in the first groove 211 and located in the middle of the first groove 211. A potting space is formed between the capacitor body 1 and the first groove 211. Wire grooves 213 are formed on both sides of the first groove 211 in the transverse direction. The cross-sectional diameter of the wire groove 213 is larger than that of the lead wire 3. The lead wire 3 passes through the wire groove 213 and forms a potting space with the wire groove 213. A potting adhesive layer 4 is injected into the potting space. The potting adhesive layer 4 is used to fix the capacitor body 1 in the first groove 211 and to fix the lead wire 3 in the wire groove 213.
[0029] like Figures 2 to 6 As shown, a cover plate 5 is connected to the outer shell 2. The cover plate 5 includes a plate body 51 and two protective sleeves 52. The two protective sleeves 52 are arranged laterally on both sides of the plate body 51 and overlap the outer shell 2. The protective sleeve 52 includes an inner sleeve body 521 and an outer sleeve body 522. The outer sleeve body 522 is fitted outside the inner sleeve body 521. The inner sleeve body 521 is fitted onto the lead wire 3. The inner sleeve body 521 is made of flexible material, and the outer sleeve body 522 is made of rigid material. The flexible inner sleeve body 521 can protect the surface of the lead wire 3 from wear and provide a certain amount of cushioning. The plate body 51 is embedded in the second groove 212, and the potting adhesive layer 4 is applied. It is also laid on the upper surface of the capacitor body 1. The plate 51 overlaps the potting compound layer 4 located above the capacitor body 1. The plate 51 is provided with a number of first bolts 53 along the longitudinal direction. The first bolts 53 are fixed to the outer shell 2 by passing through the plate 51 and the outer shell 2 in sequence. Specifically, there are four first bolts 53. The four first bolts 53 are arranged in pairs along the longitudinal direction on both sides of the plate 51. The first bolts 53 are fixed to the outer shell 2 by passing through the plate 51 and the outer shell 2 in sequence. By setting the plate 51 and the protective sleeve 52, the potting compound layer 4 and the lead wire 3 can be protected from damage.
[0030] like Figure 6 and Figure 7As shown, the lead wire 3 is also connected to a reinforcing sleeve 6. The reinforcing sleeve 6 includes a main sleeve body 61 and a fixing plate 62. The main sleeve body 61 and the fixing plate 62 are perpendicularly distributed. The main sleeve body 61 is sleeved on the lead wire 3 and overlaps the upper surface of the protective sleeve 52. The fixing plate 62 is fixed to the side of the outer shell 2 by the second bolt 63 passing through the fixing plate 62 and the outer shell 2 in sequence. The upper end of the outer sleeve 522 has a positioning groove 5221, and the lower end of the main sleeve body 61 has a positioning protrusion 611 corresponding to the positioning groove 5221. The positioning protrusion 611 passes through the positioning groove 5221. By setting the reinforcing sleeve 6, the root of the lead wire 3 can be further protected, making it less prone to bending. The cooperation of the positioning groove 5221 and the positioning protrusion 611 strengthens the stability of the connection structure between the reinforcing sleeve 6 and the protective sleeve 52, further protecting the lead wire 3 inside the protective sleeve 52 and the reinforcing sleeve 6 from bending.
[0031] In the specific use of the capacitor structure for a mahjong machine according to this application, two leads 3 are first welded to both sides of the capacitor body 1. Then, the capacitor body 1 and the leads 3 are respectively passed through the first groove 211 and the wire groove 213. After that, potting compound is injected into the potting space to form a potting compound layer 4. After the potting compound layer 4 solidifies, the two leads 3 are respectively passed through the two protective sleeves 52. The plate 51 moves along the wire towards the outer shell 2 until it is embedded in the second groove 212. The plate 51 is fixed by passing through the first bolt 53. Then, the two main sleeves 61 are successively placed on the two leads 3 and moved to overlap the protective sleeves 52. Finally, the reinforcing sleeve 6 is fixed to the outer shell 2 by passing through the second bolt 63.
[0032] This application uses a plate 51 to enclose the second groove 212, thus isolating the potting compound layer 4 from the outside and protecting it. This, in turn, protects the capacitor body 1 inside the housing 2 and the connection between the capacitor body 1 and the lead wire 3. By providing a protective sleeve 52 that is fitted onto the lead wire 3 and connected to the housing 2, the portion of the lead wire 3 extending out of and close to the housing 2 is protected by the protective sleeve 52. When the lead wire 3 is bent under stress, the protective sleeve 52 can ensure that this portion of the lead wire 3 does not bend and avoids breakage. If the lead wire 3 outside the protective sleeve 52 breaks, the protective sleeve 52 can be removed, and the portion of the lead wire 3 originally located inside the protective sleeve 52 can be re-welded with a new lead wire 3, improving the fault tolerance rate of the lead wire 3 during operation. Furthermore, during the potting process, the interlocking structure between the lead wire 3 and the groove 213 can restrict the capacitor body 1, making it less prone to movement under stress and improving the processing yield.
[0033] Compared with the prior art, the capacitor structure for mahjong machines of this application provides better protection for the lead wire 3. The lead wire 3 located at the root is not easily bent and damaged, which improves the fault tolerance of the product during placement, transportation and use.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A capacitor structure for a mahjong machine, characterized in that: The device includes a capacitor body (1) and a shell (2). Lead wires (3) are welded to both sides of the capacitor body (1). The shell (2) forms a placement groove (21). The capacitor body (1) and the lead wires (3) are placed in the placement groove (21) and form a potting space between them and the shell (2). A potting compound layer (4) is provided in the potting space. A cover plate (5) is connected to the shell (2). The cover plate (5) includes a plate body (51) and two protective sleeves (52). The two protective sleeves (52) are connected to both sides of the plate body (51). The plate body (51) is embedded in the placement groove (21) and overlaps the potting compound layer (4). It is fixed to the shell (2) by a first bolt (53). The two protective sleeves (52) are respectively fitted around the outer periphery of the lead wires (3) and connected to the shell (2).
2. The capacitor structure for a mahjong machine according to claim 1, characterized in that: The placement groove (21) includes a first groove (211) and a second groove (212). The cross-sectional dimension of the second groove (212) is smaller than that of the first groove (211). The cross-sectional dimension of the first groove (211) is larger than that of the capacitor body (1). The capacitor body (1) is disposed in the first groove (211). The potting compound layer (4) is disposed between the capacitor body (1) and the groove wall of the first groove (211) and is disposed on the outer layer of the capacitor body (1). The plate (51) is embedded in the second groove (212) and overlaps the potting compound layer (4).
3. The capacitor structure for a mahjong machine according to claim 2, characterized in that: The first groove (211) has wire grooves (213) formed on both sides in the transverse direction. The cross-sectional diameter of the wire groove (213) is larger than the cross-sectional diameter of the lead wire (3). The lead wire (3) is inserted into the wire groove (213). The potting compound layer (4) is disposed between the lead wire (3) and the wire groove (213).
4. The capacitor structure for a mahjong machine according to claim 1, characterized in that: There are multiple first bolts (53), and multiple first bolts (53) are longitudinally arranged on both sides of the plate (51). The first bolts (53) are sequentially inserted into the plate (51) and the outer shell (2). Two protective sleeves (52) are transversely arranged on both sides of the plate (51).
5. The capacitor structure for a mahjong machine according to claim 1, characterized in that: The lead wire (3) is connected to a reinforcing sleeve (6). The reinforcing sleeve (6) includes a main sleeve body (61) and a fixing plate (62). The main sleeve body (61) and the fixing plate (62) are perpendicularly distributed. The main sleeve body (61) is sleeved on the lead wire (3) and overlaps the upper surface of the protective sleeve (52). The fixing plate (62) is fixed to the side of the outer shell (2) by a second bolt (63).
6. The capacitor structure for a mahjong machine according to claim 5, characterized in that: The protective sleeve (52) includes an inner sleeve (521) and an outer sleeve (522). The outer sleeve (522) is fitted over the outside of the inner sleeve (521), and the inner sleeve (521) is fitted over the lead wire (3). The inner sleeve (521) is made of flexible material, and the outer sleeve (522) is made of rigid material.
7. The capacitor structure for a mahjong machine according to claim 6, characterized in that: The upper end of the outer sleeve (522) is formed with a positioning groove (5221), and the lower end of the main sleeve (61) is formed with a positioning protrusion (611) corresponding to the positioning groove (5221). The positioning protrusion (611) passes through the positioning groove (5221).