Multi-way solenoid valve with contact plate

Abstract

The utility model discloses a kind of multi-pass solenoid valve with power connection plate, comprising: multiple valve bodies and power connection plate, each valve body has a pair of same direction projecting insert, the power connection plate includes: multiple metal sheets for the conductive connection of the insert and power supply, and plastic layer covering the metal sheet, the metal sheet has wiring end connected with power supply and insert connection plug-in end, the plastic layer exposes the wiring end and the plug-in end, characterized in that, between adjacent two metal sheets, there is the bending part formed by punching cutting, the plastic layer is provided with at least part recess of covering the bending part, to prevent the rebound of bending part, thereby avoid the short circuit problem that multi-pass solenoid valve appears when working.

Description

Technical Field

[0001] This utility model relates to a multi-way solenoid valve with a junction plate, which may be classified as F16K 11 / 22 or F16K31 / 06 by IPC. Background Technology

[0002] Currently, the contact plate of a multi-way solenoid valve is used to connect multiple prongs and protect them. The contact plate contains a copper core, which is composed of several metal sheets with different structures. Before stamping, they are connected through the connection point of the copper core. The copper core can only be used normally after the connection point is broken. However, if the connection point is broken, the elasticity of the metal sheets may cause the connection point to spring back, which may cause a short circuit in the multi-way solenoid valve during operation and cause damage.

[0003] For relevant terms and knowledge, unless otherwise specified in this specification, please refer to Chinese Patent CN213598629U "A Multi-way Solenoid Valve with a Connector Plate", CN102449358B "A Solenoid Valve Assembly Especially for Washing Machines", as well as "IEC Electrical and Electronic Standards Terminology Dictionary" (China Standards Press, 1st edition, 1992), "Electrical Manufacturing Technology" (Mechanical Industry Press, 1st edition, 1982), "Mechanical Engineering Handbook" and "Electrical Engineering Handbook" (Mechanical Industry Press, 1st edition, 1978 and 2nd edition, 1997), National Standard GB / T21465-2008 "Valve Terminology" and National Light Industry Standard QB / T1291 "Water Inlet Solenoid Valve for Automatic Washing Machines". Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a multi-way solenoid valve with a contact plate, which can prevent the metal plate connection from springing back and causing a short circuit.

[0005] In a first aspect, the present invention provides a multi-way solenoid valve with a grounding plate, comprising: a plurality of valve bodies and a grounding plate, each valve body having a pair of protruding tabs extending in the same direction, the grounding plate comprising: a plurality of metal plates for electrically connecting the tabs and a power source, and a plastic layer covering the metal plates, the metal plates having a terminal for connecting to the power source and a plug-in terminal for connecting to the tabs, the plastic layer exposing the terminal for connecting to the terminal for connecting to the plug-in terminal, a bent portion formed by stamping and cutting between two adjacent metal plates, and the plastic layer having a groove that at least partially covers the bent portion.

[0006] The multi-way solenoid valve according to the present invention has at least the following beneficial effects: by providing a groove on the plastic layer of the contact plate to cover the bent part formed after stamping, the bent part is fixed in the plastic layer, preventing the springback of the bent part, avoiding the problem of short circuit during operation of the multi-way solenoid valve, and improving the working stability of the multi-way solenoid valve.

[0007] According to some embodiments of this utility model, a buckle is formed at the bottom of the groove to tightly fasten the end of the bent portion. The buckle structure can further prevent the bent portion from springing back.

[0008] According to some embodiments of the present invention, the bottom of the groove or the side wall opposite to the bend is provided with an opening to drain splashed water.

[0009] According to some embodiments of this utility model, the junction box further includes a retainer for snapping and fixing the terminal of each metal piece. The retainer is provided with a first groove adapted to the terminal for the terminal to be snapped into. This enhances the strength of the terminal and prevents damage to the terminal and power interface during long-term plugging and use.

[0010] According to some embodiments of this utility model, the metal sheet has protrusions on both sides at the junction of the wiring end and the first groove, and the protrusions abut against the card seat. This restricts the displacement of the metal sheet relative to the card seat, ensuring accurate positioning of the metal sheet during the plastic injection molding process.

[0011] According to some embodiments of this utility model, the plastic layer includes an inverted baffle formed around the plug-in end along the vertical direction of the metal sheet on the side of the contact plate facing the valve body. The inverted baffle partially surrounds the valve body to engage and fix the contact plate and the valve body. This inverted baffle ensures that the contact plate and the valve body are engaged and connected, preventing displacement and loosening of the contact plate and the valve body.

[0012] According to some embodiments of this utility model, the inner wall of the C-shaped baffle is provided with reinforcing ribs to improve the strength of the C-shaped baffle.

[0013] According to some embodiments of this utility model, the number A of valve bodies, the number B of inserts, and the number C of metal plates have a corresponding relationship: A = B / 2 = C - 1. This relationship makes the electrical control of the multi-way solenoid valve simple and reliable, while reducing the amount of metal plates used and lowering production costs. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0015] Figure 1 This is an overall schematic diagram of a multi-way solenoid valve provided in one embodiment of the present invention;

[0016] Figure 2 yes Figure 1A schematic diagram of a multi-way solenoid valve without a contact plate is shown.

[0017] Figure 3 yes Figure 1 The diagram shows the overall layout of the junction box.

[0018] Figure 4 yes Figure 3 The side view of the junction box is shown;

[0019] Figure 5 yes Figure 4 The diagram shows a cross-sectional view (AA) of the junction box.

[0020] Figure 6 yes Figure 5 A partial enlarged view of the junction box is shown in Figure A;

[0021] Figure 7 yes Figure 3 A schematic diagram of the other end face of the junction box shown;

[0022] Figure 8 yes Figure 5 A schematic diagram of the overall metal sheet shown;

[0023] Figure 9 yes Figure 3 The diagram shows the overall layout of the card slot;

[0024] Figure 10 yes Figure 3 A schematic diagram of the metal sheet with a card slot is shown.

[0025] Figure 11 yes Figure 7 The top view of the junction box is shown.

[0026] Icon labels:

[0027] Valve body 100; Insert plate 110;

[0028] 200; metal sheet 210; terminal block 211; plug-in end 212; plug-in hole 213; bent part 214; protrusion 215; card holder 220; first groove 221; plastic layer 230; groove 231; inverted buckle 232; opening 233; C-shaped baffle 234; reinforcing rib 235. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] This utility model embodiment is an improvement based on the conventional design described in Chinese Patent CN213598629U, "A Multi-way Solenoid Valve with a Connector Plate". The embodiments of this application will be further described below with reference to the accompanying drawings.

[0034] Reference Figures 1 to 3 This utility model provides a multi-way solenoid valve with a junction plate 200, comprising multiple valve bodies 100 and a junction plate 200. Each valve body 100 is arranged side-by-side on the same straight line. After the insert 110 is connected to a power source, it can control the opening and closing of the corresponding solenoid valve. The junction plate 200 includes multiple metal plates 210, a retainer 220, and a plastic layer 230. Figures 7 to 11As shown, the metal sheet 210 is a thin copper plate. The metal sheet 210 has a terminal 211 for connecting to a power source and a plug-in terminal 212 for connecting to a insert 110. The plug-in terminal 212 has a plug-in hole 213 adapted to the insert 110. The insert 110 is inserted into the plug-in hole 213 to achieve a conductive connection between the insert 110 and the plug-in terminal 212. The terminal 211 is a hook structure formed by extending the main body of the metal sheet 210 outwards and bending at 180° at the end. This hook structure of the terminal 211 can prevent damage to the terminal 211 and the power interface during long-term use. The power supply board 200 also includes a retainer 220 that snaps and fixes the terminal 211 of each metal sheet 210. Multiple first grooves 221 are arranged side-by-side on the surface of the retainer 220 to mate with the terminal 211. The terminal 211 is inserted into the first groove 221 to achieve a fixed connection between the retainer 220 and the metal sheet 210. The plastic layer 230 is formed by integral injection molding based on the snap-fit ​​metal sheet 210 and the card holder 220. The plastic layer 230 covers the metal sheet 210, but exposes the plug-in end 212 and the wiring end 211. The wiring end 211 is the interface for connecting the metal sheet 210 to the power supply.

[0035] Reference Figures 3 to 8 Between two adjacent metal sheets 210, there is a bent portion 214 formed by stamping and cutting. A groove 231 is provided on the plastic layer 230, which at least partially covers the bent portion 214, fixing the bent portion 214 within the plastic layer 230 and preventing the bent portion 214 from springing back. Since the bent portion 214 is part of the metal sheet 210 and has a certain degree of elasticity, without any anti-springback measures, the bent portion 214 will spring back, causing the two adjacent metal sheets 210 to contact each other. When the metal sheets 210 are energized, this will cause a short circuit, thereby damaging the multi-way solenoid valve. Therefore, by providing a groove 231 on the plastic layer 230 of the grounding plate 200 to cover the bent portion 214 formed by stamping, the springback of the bent portion 214 can be effectively prevented, avoiding short circuits in the multi-way solenoid valve during operation and improving the working stability of the multi-way solenoid valve.

[0036] Specifically, an undercut 232 is formed along the inner sidewall of the groove 231 to the bottom. The undercut 232 tightly engages the end of the bent portion 214, thus fixing the end of the bent portion 214 and further preventing the bent portion 214 from springing back. Furthermore, the inner wall portion of the groove 231 adjacent to the bent portion 214 covers the bent portion 214, further fixing the bent portion 214 and preventing it from springing back. Therefore, the bent portion 214 is simultaneously fixed by the undercut 232 and the inner wall, effectively preventing the bent portion 214 from springing back, thereby avoiding short circuits during operation of the multi-way solenoid valve and effectively improving the operational stability of the multi-way solenoid valve.

[0037] Reference Figure 3 and Figure 8The bottom of the groove 231 is provided with an opening 233 for draining water splashed into the multi-way solenoid valve during operation; the opening 233 can also be provided on the side wall opposite to the bend 214. The specific location needs to be determined according to the number of bends 214. For example, when the bend 214 of the metal sheet 210 is bent on one side only, that is, when the bend 214 is only located on one side of the metal sheet 210, the opening 233 is provided on the side wall opposite to the bend 214; when the bend 214 of the metal sheet 210 is bent on both sides, that is, when there are two bends 214 located on two metal sheets 210 respectively, and the two bends 214 are opposite each other, the opening 233 is provided at the bottom of the groove 231.

[0038] Reference Figures 8 to 10 The metal sheet 210 has protrusions 215 on both sides of the junction between the terminal 211 and the first groove 221, and these protrusions 215 abut against the card holder 220. Specifically, during the injection molding process of the plastic layer 230, the protrusions 215 can effectively resist the impact of the flowing plastic, limit the metal sheet 210, prevent the terminal 211 from dislodging from the first groove 221, and ensure that the metal sheet 210 and the card holder 220 are correctly positioned and fixed, thereby reducing the defect rate of the connector board 200.

[0039] Reference Figure 1 and Figure 3 On the side of the connector 200 facing the valve body 100, the plastic layer 230 forms an inverted baffle 234 around the plug-in end 212 along the vertical direction of the metal sheet 210. This inverted baffle 234 semi-encloses the valve body 100 and is embedded in the gap between two adjacent valve bodies 100 to achieve the locking and fixing of the connector 200 and the valve body 100, and to limit the displacement of the connector 200 and the valve body 100. In addition, the inner sidewall of the inverted baffle 234 is also provided with reinforcing ribs 235 to improve the strength of the inverted baffle 234 and prevent the inverted baffle 234 from deforming when the connector 200 and the valve body 100 are locked and fixed.

[0040] In this embodiment, let the number of valve bodies 100 be A, the number of inserts 110 be B, and the number of metal plates 210 be C. Then, the corresponding relationship is A = B / 2 = C - 1. This embodiment only requires three metal plates 210 to connect the power supply to the four inserts 110, thereby realizing the opening and closing control of the solenoid valve. This saves the amount of metal plates 210 used, reduces production costs, and the electrical control is simple and reliable.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-way solenoid valve with a junction plate (200), comprising: A plurality of valve bodies (100) and a junction plate (200) are provided, each valve body (100) having a pair of inserts (110) extending in the same direction, the junction plate (200) comprising: a plurality of metal sheets (210) for electrically connecting the inserts (110) and a power source, and a plastic layer (230) covering the metal sheets (210), the metal sheets (210) having a terminal (211) for connecting to the power source and a plug-in terminal (212) for connecting to the inserts 110, the plastic layer (230) exposing the terminal (211) and the plug-in terminal (212), characterized in that a bend (214) formed by stamping and cutting is provided between two adjacent metal sheets (210), and the plastic layer (230) is provided with a groove (231) that at least partially covers the bend (214).

2. The multi-way solenoid valve according to claim 1, characterized in that, The bottom of the groove (231) has an undercut (232) that fastens to the end of the bend (214).

3. The multi-way solenoid valve according to claim 1, characterized in that, An opening (233) is provided at the bottom of the groove (231) or on the side wall opposite to the bend (214) to drain splashed water.

4. The multi-way solenoid valve according to claim 1, characterized in that, The junction box (200) also includes a retainer (220) for snapping and fixing the terminal (211) of each metal piece (210) with the retainer (220) having a first groove (221) adapted to the terminal (211) for the terminal (211) to be snapped into.

5. The multi-way solenoid valve according to claim 4, characterized in that, The metal sheet (210) forms protrusions (215) on both sides of the junction of the terminal (211) and the first groove (221), and the protrusions (215) abut against the card holder (220).

6. The multi-way solenoid valve according to claim 1, characterized in that, The plastic layer (230) includes an incline baffle (234) formed around the plug end (212) on the side of the contact plate (200) facing the valve body (100) along the direction perpendicular to the metal sheet (210). The incline baffle (234) forms a semi-enclosure around the valve body (100) to engage and fix the contact plate (200) and the valve body (100).

7. The multi-way solenoid valve according to claim 6, characterized in that, The inner wall of the shaped baffle (234) is provided with reinforcing ribs (235).

8. The multi-way solenoid valve according to claim 1, characterized in that, The number A of the valve body (100), the number B of the insert (110) and the number C of the metal plate (210) have a corresponding relationship: A=B / 2=C-1.

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