Electromagnetic valve device

Abstract

The utility model provides an electromagnetic valve device which comprises an insulating shell, a bobbin accommodated in the insulating shell, a wire wound on the bobbin, a pair of terminals fixed on the bobbin and connected with the wire, and a cable connected to the terminals, the terminal is provided with a main arm extending horizontally, a pair of fixed arms extending downwards from the tail end of the inner side of the main arm, and a pair of riveting sheets extending upwards from the tail end of the outer side of the main arm, and the main arm is provided with an inner side folding sheet and an outer side folding sheet which are arranged between the fixed arms and the riveting sheets and are distributed inside and outside; the inner side folding sheet fixes a leading-out wire of the wire, the outer side folding sheet is connected with a wire core of a cable in a pressing mode, and the riveting pressing sheet is connected with and fixes the cable from the two sides in a pressing mode. Compared with the prior art, the electromagnetic valve device has the advantages that the structure of the terminal is optimized, and the riveting sheet of the terminal is utilized to strengthen the connection strength of the cable so as to ensure that the cable is not easy to break, so that reliable and stable connection is provided.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to a solenoid valve device. Background Art

[0002] Solenoid valves are one of the most commonly used components in industrial equipment today. They are essential automation elements for controlling fluids and can be used to adjust the direction, flow rate, velocity, and other parameters of fluid media within industrial control systems. Solenoid valves can be used with various circuits to achieve desired control, ensuring both precision and flexibility. There are also numerous types of solenoid valves, each serving different functions in different control system locations. A common solenoid valve primarily consists of an insulating housing, a bobbin (also called a winding bobbin or coil bobbin) located within the housing, an enameled wire wrapped around the bobbin, a metal terminal connected to the enameled wire, and a cable connected to the metal terminal. The cable ends are inserted into the housing and connected to the metal terminal. However, in existing technologies, the connection between the housing, cable, and metal terminal often suffers from unstable connections. For example, loosening or detachment between the cable and the housing can significantly affect the airtightness between the two, further compromising the stability of the connection between the cable core and the metal terminal. Utility Model Content

[0003] The technical problem solved by the present invention is to provide a solenoid valve device to improve the problem of poor connection stability in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an electromagnetic valve device, comprising: an insulating shell, a bobbin accommodated in the insulating shell, a wire wound on the bobbin, a pair of terminals fixed on the bobbin and connected to the wire, and a cable connected to the terminal, the terminal is provided with a horizontally extending main arm, a pair of fixed arms extending downward from the inner end of the main arm, and a pair of riveted plates extending upward from the outer end of the main arm, the main arm is provided with an inner folding plate and an outer folding plate between the fixed arm and the riveted plate and distributed inside and outside, the inner folding plate fixes the lead wire of the wire, the outer folding plate crimps the wire core of the cable, and the pair of riveted plates crimp and fix the cable from both sides.

[0005] Furthermore, the insulating shell is provided with an outer cylinder surrounding the outer periphery of the wire and a cover body located above the outer cylinder, the cover body is provided with a wiring portion protruding outward to be sleeved on the cable, the wiring portion is thick inside and thin outside, and is provided with a thickened portion connected to the cover body, and the thickened portion is provided with an inclined outer surface.

[0006] Furthermore, the outer surface of the cover is designed to be free of holes.

[0007] Furthermore, the bobbin is provided with a winding post, a top ring edge located at the top of the winding post, a bottom ring edge located at the bottom of the winding post, and an installation head located above the top ring edge. The wire is wrapped around the winding post and between the top ring edge and the bottom ring edge. Several channels that pass through the top ring edge are formed inside and outside.

[0008] Furthermore, the solenoid valve device also includes an inner lining tube, which is located inside the spool and has a base and a convex column portion protruding downward from the base. The base has several protruding portions evenly distributed in the circumferential direction, and the protruding portions extend into the channel.

[0009] Furthermore, the inner folding piece and the outer folding piece of each terminal are integrally connected to the same side of the terminal, and the inner folding piece and the outer folding piece of one terminal are symmetrically distributed with the inner folding piece and the outer folding piece of another terminal.

[0010] Furthermore, the main arm is formed with an outwardly protruding limiting protrusion on a side away from the inner folding piece. The limiting protrusion and the inner folding piece are arranged in a corresponding position but are respectively located on two side edges of the main arm.

[0011] Furthermore, the pair of fixed arms are formed by vertically bending downward from two side edges of the inner end of the main arm to form an inverted U-shaped structure.

[0012] Compared with the prior art, the solenoid valve device of the present invention optimizes the structure of the terminal and utilizes the riveting sheet of the terminal to strengthen the connection strength of the cable to ensure that the cable is not prone to breakage, thereby providing a reliable and stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the solenoid valve device of the present invention.

[0014] Figure 2 This is an exploded view of the solenoid valve device of the present invention.

[0015] Figure 3 This is a structural diagram of the terminals of the solenoid valve device of the present invention. DETAILED DESCRIPTION

[0016] See also Figures 1 to 3 As shown, the present invention provides a solenoid valve device, which includes: an insulating housing 10, a bobbin 30 located inside the insulating housing 10, a wire 20 wound around the bobbin 30, a pair of terminals 40 connected to the wire 20, an inner liner 50 mounted on the bobbin 30, and a cable 60 connected to the terminals 40. The specific structure of each of the aforementioned components is described in detail below.

[0017] The insulating shell 10 is made by an injection molding process and is provided with an outer cylinder 11 and a cover 12 which are integrally connected. The outer cylinder 11 and the cover 12 are integrally formed, and the outer cylinder 11 is covered by the injection molding process on the periphery of the wire 20 so that the wire 20 is wrapped on its inner side. The cover 12 is formed above the outer cylinder 11 and is used to cover the top of the spool 30 and to achieve a fixed connection with the cable 60. Preferably, the cover 12 is provided with a wiring portion 14 protruding outward, the wiring portion 14 surrounds the cable 60, and at least two sets of wire pressing grooves 15A and 15B are formed on the wiring portion 14. The wire pressing grooves 15A and 15B both surround the cable 60, and the two sets of wire pressing grooves 15A and 15B are distributed along the length direction of the cable 60, that is, the wire pressing groove 15A is located inside the wire pressing groove 15B. The wire pressing grooves 15A and 15B are used to press and clamp the wire cores of the cable 60 therein, thereby strengthening the bonding strength between the cable 60 and the terminal portion 14. The insulating housing 10 is manufactured through a separate injection molding process and is wrapped around the outside of the bobbin 30. Similarly, the bobbin 30 is also manufactured through a separate injection molding process. In other words, the solenoid valve device of the present invention is manufactured through two injection molding processes, namely, the bobbin 30 is first injection molded, and the insulating housing 10 is then injection molded on the bobbin 30. In addition, to ensure that the interior of the product remains completely sealed during the secondary injection molding (over molding), in a preferred embodiment of the present invention, the cover 12 is designed to be hole-free, and its outer surface (such as the top surface 120) does not have any holes to ensure that no leakage occurs during the sealing test.

[0018] The wire 20 is wound on the bobbin 30 and around the periphery of the winding column 31 of the bobbin 30. The wire 20 is provided with a pair of lead wires 21 for connecting with the terminal 40. Specifically, the lead wires 21 extend from bottom to top to the top position of the bobbin 30 to be wound and connected with the terminal 40. Figure 3 shown.

[0019] The bobbin 30 is provided with a winding post 31, a top ring edge 32 located at the top of the winding post 31, a bottom ring edge 33 located at the bottom of the winding post 31, and a mounting head 34 located above the top ring edge 32, wherein the winding post 31 is cylindrical and is vertically arranged in the wire 20 for winding the wire 20. The top ring edge 32, the coil body 31 and the bottom ring edge 33 together form an I-shaped structure. The mounting head 34 is covered by the insulating shell 10, and the top of the mounting head 34 is covered by the cover body 12. The mounting head 34 is provided with a pair of slots 35 for holding the terminal 40. The slots 35 are opened upwards so that the terminal 40 can be inserted therein from top to bottom. Preferably, a plurality of channels 36 are formed on the top ring edge 32 for accommodating the protruding portion 53 of the inner liner 50.

[0020] The terminals 40 are a pair, which are snap-fitted to the mounting head 34 and are provided with a horizontally extending main arm 41 and a pair of fixed arms 42 extending vertically from the main arm 41, wherein the main arm 41 is used to be wound around and connected with the lead wire 21 of the conductor 20, and the main arm 41 is provided with an inner end and an outer end, and the fixed arm 42 is bent downward from the inner end of the main arm 41 and inserted into the slot 35, thereby fixing the terminal 40 in the mounting head 34. Preferably, a pair of folding pieces 43 are formed on the side of the main arm 41, and the folding pieces 43 are folded upward on the upper side of the main arm 41, and one of the folding pieces 43 (or inner folding piece 43a) is used to be wound around the lead wire 21, so that the lead wire 21 and the terminal 40 can be better wound around and connected to the main arm 41 and the folding piece 43, as shown in FIG. Figure 3 As shown, the folding piece 43 extends upward at an angle and is located above the main arm 41. It should be noted that the pair of terminals 40 are symmetrically arranged, and their folding pieces 43 extend in opposite directions respectively, and the other folding piece 43 of the pair of folding pieces 43 (or the outer folding piece 43b) is used to crimp the core of the cable 60 so that the core is clamped between the folding piece 43 and the main arm 41; the number of the fixed arms 42 is a pair, which are bent vertically downward from the two side edges of the main arm 41, and the two sides of the fixed arms 42 are provided with thorns 421, which can strengthen the bonding force between the terminal 40 and the mounting head 34, and the two fixed arms 42 are parallel to each other and form an inverted U-shaped structure located at the inner end of the terminal 40 together with the main arm 41.

[0021] To better secure and protect the cable 60 from twisting and breakage, in a preferred embodiment of the present invention, the terminal 40 is further provided with a pair of rivet tabs 44 formed at the outer ends of the main arm 41. These rivet tabs 44 are positioned opposite each other, with their bases integrally connected to the main arm 41. The cable 60 is clamped between these rivet tabs 44 and secured by the left and right rivet pressure of these rivet tabs 44, thereby securely crimping the wire core of the cable 60 beneath the other flap 43 (i.e., the outer flap 43b). The rivet tabs 44 extend upward from the main arm 41, while the fixed arms 42 extend downward from the main arm 41. Furthermore, an outwardly projecting stopper 45 is formed on one side of the main arm 41, facing away from the inner flap 43a. The stopper 45 corresponds to the inner flap 43a, but is located on either side of the main arm 41.

[0022] In addition, in order to strengthen the strength of the connection between the cable 60 and the cover body 12 and avoid the cable 60 from breaking at the connection position, in a preferred embodiment of the present invention, the wiring portion 14 of the cover body 12 is further provided with a thickened portion 140 connected to the cover body 12, so that the wiring portion 14 has a trapezoidal structure with a thick inner portion and a thin outer portion, and the thickened portion 140 is provided with an inclined outer surface. The setting of the thickened portion 140 strengthens the strength of the wiring portion 14 and can further reduce the possibility of the cable 60 breaking.

[0023] The inner liner 50 comprises a base 51 and a boss portion 52 extending downwardly from the base 51. The base 51 and the boss portion 52 are integrally injection molded. Several boss portions 53 are evenly distributed along the circumference of the base 51. A through hole 54 is formed at the center of the base 51, extending downwardly through the boss portion 52. Preferably, the boss portion 52 extends into the winding post 31, while the boss portion 53 extends into the channel 36 on the top ring edge 32.

[0024] In summary, the solenoid valve device of the present invention optimizes the structure of the terminal 40 and the insulating shell 10, and utilizes the rivet plate 44 of the terminal 40 and the thickened portion 140 of the wiring portion 14 to strengthen the connection strength of the cable 60 to ensure that the cable 60 is not prone to breakage, thereby providing a reliable and stable connection.

[0025] The above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention using the above-disclosed method content without departing from the scope of the technical solution of the present invention, which all fall within the scope of protection of the claims.

Claims

1. A solenoid valve device, comprising: An insulating shell, a bobbin housed in the insulating shell, a wire wound on the bobbin, a pair of terminals fixed on the bobbin and connected to the wire, and a cable connected to the terminal, characterized in that: the terminal is provided with a horizontally extending main arm, a pair of fixed arms extending downward from the inner end of the main arm, and a pair of riveted plates extending upward from the outer end of the main arm; the main arm is provided with an inner folding plate and an outer folding plate distributed inside and outside and between the fixed arm and the riveted plate; the inner folding plate fixes the lead wire of the wire, the outer folding plate is crimped to the wire core of the cable, and the pair of riveted plates crimp and fix the cable from both sides.

2. The solenoid valve device according to claim 1, wherein: The insulating shell is provided with an outer cylinder surrounding the outer periphery of the wire and a cover body located above the outer cylinder. The cover body is provided with a wiring portion protruding outward to be sleeved on the cable. The wiring portion is thick inside and thin outside, and is provided with a thickened portion connected to the cover body, and the thickened portion is provided with an inclined outer surface.

3. The solenoid valve device according to claim 2, wherein: The outer surface of the cover is designed to be free of holes.

4. The solenoid valve device according to claim 3, wherein: The bobbin is provided with a winding post, a top ring edge located at the top of the winding post, a bottom ring edge located at the bottom of the winding post, and an installation head located above the top ring edge. The wire is wrapped around the winding post and between the top ring edge and the bottom ring edge. A plurality of channels are formed on the top ring edge that pass through the inside and outside.

5. The solenoid valve device according to claim 4, wherein: The solenoid valve device also includes an inner lining tube, which is located inside the spool and has a base and a convex column portion protruding downward from the base. The base has several protruding portions evenly distributed in the circumferential direction, and the protruding portions extend into the channel.

6. The solenoid valve device according to claim 5, wherein: The inner folding piece and the outer folding piece of each terminal are integrally connected to the same side of the terminal, and the inner folding piece and the outer folding piece of one terminal are symmetrically distributed with the inner folding piece and the outer folding piece of the other terminal.

7. The solenoid valve device according to claim 6, wherein: The main arm is formed with an outwardly protruding limiting convex portion on one side away from the inner folding piece. The limiting convex portion and the inner folding piece are arranged in a corresponding position but are respectively located on two side edges of the main arm.

8. The solenoid valve device according to claim 7, wherein: The pair of fixed arms are formed by vertically bending downward from two side edges of the inner ends of the main arms to form an inverted U-shaped structure.

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