Portable power connection type electromagnetic valve

Abstract

The utility model discloses a convenient power connection type electromagnetic valve, which relates to the technical field of electromagnetic valves and comprises an electromagnetic valve body, a contact pin of the electromagnetic valve body comprises a power connection end connected with an external power supply device and a wiring end connected with a coil copper wire, the power connection end and the wiring end are arranged in an L shape, and a clamping groove facilitating winding connection of the coil copper wire is arranged on the wiring end. The wiring end is welded with a coil copper wire; when a copper wire is wound, the copper wire can be wound in the clamping groove, the clamping groove can play a role in limiting the copper wire, the connection stability and the connection strength of the copper wire and the contact pin are improved in cooperation with the mode that the copper wire and the contact pin are welded, and then the service life of the electromagnetic valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve with convenient power connection. Background Art

[0002] A solenoid valve is a commonly used automatic device for controlling fluids. It often conducts external current into an internal electromagnetic coil through a pin. The specific principle is as follows: when powered on, the electromagnetic coil generates an electromagnetic force, and the valve core moves downward to close the valve; when powered off, the electromagnetic force disappears, the spring resets, the valve core moves upward, and the valve opens.

[0003] During the assembly process of the solenoid valve, it is necessary to actively connect the pin and the copper wire of the electromagnetic coil. The commonly used connection method at present is: stripping the outer insulation layer at the end of the copper wire and winding the stripped part around the pin; although this method can complete the connection between the copper wire and the pin, the connection strength is poor.

[0004] Therefore, there is an urgent need for a solenoid valve with convenient power connection and high connection strength between the pin and the copper wire. Summary of the Invention

[0005] The purpose of the utility model is to provide a solenoid valve with convenient power connection to solve the problems existing in the above-mentioned prior art, and improve the connection strength between the pin and the copper wire by using a slot in cooperation with welding.

[0006] To achieve the above purpose, the utility model provides the following scheme: The utility model provides a solenoid valve with convenient power connection, including a solenoid valve body. The pin of the solenoid valve body includes a power connection end connected to an external power supply setting and a wiring end connected to a coil copper wire. The power connection end and the wiring end are arranged in an L shape. A slot for facilitating the winding connection of the coil copper wire is arranged on the wiring end, and the wiring end is welded to the coil copper wire.

[0007] Preferably, the wiring end is connected to the coil copper wire by resistance welding.

[0008] Preferably, the pin is injection molded and arranged in the plug of the solenoid valve body.

[0009] Preferably, the slot corresponds to the wire holder of the solenoid valve body.

[0010] Preferably, the pin is a copper pin.

[0011] Preferably, a plug cap is sleeved on the outer periphery of the plug. One end of the plug cap is sleeved on the outer cover of the solenoid valve body. There is a connection cavity between the plug and the plug cap, and the wiring end is located in the connection cavity.

[0012] Preferably, a socket section is provided at the top of the outer cover. The outer diameter of the socket section is smaller than that of the outer cover. The plug cap is sleeved outside the socket section, and a sealing ring for sealing the gap between the plug cap and the socket section is sleeved on the socket section.

[0013] Preferably, the socket section and the outer cover are integrally provided.

[0014] Preferably, an annular flange is provided inwardly at one end of the socket section away from the outer cover. The bottom end of the plug is provided in a stepped shape. The stepped surface at the bottom end of the plug abuts against one end of the annular flange close to the outer cover. The inner peripheral wall of the plug cap is provided in a stepped shape. The stepped surface of the inner peripheral wall of the plug cap abuts against one end of the annular flange away from the outer cover.

[0015] Preferably, an annular connecting piece is provided at one end of the inner cover of the solenoid valve body close to the pole shoe. The inner peripheral wall of the wire holder of the solenoid valve body and the outer peripheral wall of the pole shoe are both in a stepped structure. The annular connecting piece is arranged between the stepped surface of the wire holder and the stepped surface of the pole shoe, and the annular connecting piece is welded to the pole shoe.

[0016] The utility model mainly achieves the following technical effects compared with the prior art:

[0017] When winding the copper wire, the copper wire can be wound in the card slot. The card slot will play a limiting role on the copper wire. Combined with the way of welding the copper wire and the pin, the stability and connection strength of the two are improved, and thus the service life of the solenoid valve is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of the convenient power connection type solenoid valve of the present invention;

[0020] Figure 2 is a top view of the convenient power connection type solenoid valve of the present invention;

[0021] Figure 3 is Figure 2 the cross-sectional view at A-A in

[0022] Figure 4 is Figure 3 the enlarged structure view at B in

[0023] Figure 5This is a schematic structural diagram of the pin wiring terminal after removing the plug cap of the present utility model;

[0024] Among them, 1. Plug cap; 2. Plug; 3. Pin; 4. Electromagnet; 5. Outer cover; 6. Inner cover; 7. Wire holder; 8. Spring; 9. Moving iron core; 10. Push rod; 11. Valve core; 12. Pole shoe; 13. Air seal; 14. Valve body; 15. Power connection terminal; 16. Wiring terminal; 17. Card slot; 18. Socketing section; 19. Sealing ring; 20. Annular flange; 21. Locking ring; 22. Annular connecting piece. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] The purpose of the present utility model is to provide a convenient power-connecting solenoid valve to solve the problems existing in the prior art, and improve the connection strength between the pin and the copper wire by using the card slot in cooperation with welding.

[0027] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please refer to as Figures 1 to 5As shown in the figure, a convenient power-connected solenoid valve is provided, which includes a solenoid valve body. The solenoid valve body includes a plug cap 1, a plug 2, a pin 3, an electromagnet 4, an outer cover 5, an inner cover 6, a wire holder 7, a spring 8, a moving iron core 9, a push rod 10, a valve core 11, a pole shoe 12, an air seal 13 and a valve body 14. The plug 2, the electromagnet 4, the wire holder 7, the pole shoe 12 and the valve body 14 are arranged in the outer cover 5 from top to bottom in sequence, and a cylindrical cavity is formed in the middle. An inner cover 6, a moving iron core 9, a push rod 10 and a valve core 11 are arranged in the cylindrical cavity from top to bottom in sequence. A movement space for the valve core 11 is provided at the bottom of the pole shoe 12. The air seal 13 is arranged between the valve core 11 and the pole shoe 12. At the same time, the push rod 10 passes through the pole shoe 12 and is connected to the valve core 11. The spring 8 is arranged in the spring cavity between the moving iron core 9 and the pole shoe 12 to provide a reset force for the moving iron core 9. The pin 3 in this embodiment includes a power connection end 15 and a wiring end 16. The power connection end 15 is connected to an external power supply setting, and the wiring end 16 is connected to the coil copper wire. The power connection end 15 and the wiring end 16 are arranged in an L shape. A card slot 17 is arranged on the wiring end 16 to facilitate the winding connection of the coil copper wire. The wiring end 16 is welded to the coil copper wire. The card slot 17 will play a limiting role on the wound copper wire, and then through the welding method, the connection stability and connection strength between the two are improved, thereby improving the service life of the solenoid valve.

[0029] Preferably, the wiring end 16 is connected to the coil copper wire by resistance welding. The heat generated during the resistance welding connection can directly melt the insulating layer wrapped outside the copper wire and directly weld the copper wire to the pin 3, saving the step of stripping the outer insulating layer of the copper wire and improving the overall assembly efficiency of the solenoid valve.

[0030] In order to further improve the assembly efficiency and structural strength, the pin 3 is injection-molded and arranged in the plug 2. The card slot 17 is arranged corresponding to the wire holder 7, shortening the distance between the card slot 17 and the wire holder 7. Thus, when the extension length of the copper wire is certain, the number of turns of the copper wire wound in the card slot 17 is increased, further improving the connection strength. The pin 3 selected in this embodiment is a copper pin 3.

[0031] In order to improve the protection of the plug 2, a plug cap 1 is sleeved on the outer periphery of the plug 2. The specific setting method of the plug cap 1 is: one end of the plug cap 1 is sleeved on the outer cover 5. There is a connection cavity between the plug 2 and the plug cap 1. The wiring end 16 is located in the connection cavity, that is, the connection cavity provides a connection space for the wiring end 16 of the pin 3 and the copper wire.

[0032] Preferably, an annular groove body is arranged in the middle of the plug 2, and then an annular cavity is formed between the plug 2 and the plug cap 1. This annular cavity is the connection cavity.

[0033] After the welding of the pin 3 and the copper wire is actually completed, if the wiring end 16 of the pin 3 is too long and affects the assembly of the plug cap 1, it can be manually bent inward.

[0034] To improve the structural compactness, a socket section 18 is provided at the top of the outer cover 5. The outer diameter of the socket section 18 is smaller than that of the outer cover 5. The plug cap 1 is sleeved outside the socket section 18, thereby reducing the protruding amount of the plug cap 1 along the radial direction of the outer cover 5. Preferably, to improve the aesthetics, the outer diameter of the socket part of the plug cap 1 and the socket section 18 is set to be the same as the outer diameter of the outer cover 5. To improve the sealing performance of the device, a sealing ring 19 is sleeved on the socket section 18, and the sealing ring 19 is used to seal the gap between the plug cap 1 and the socket section 18.

[0035] To avoid excessive protrusion of the sealing ring 19, after the plug cap 1 and the socket section 18 are provided, a circular groove is formed among the bottom end of the plug cap 1, the stepped surface between the outer cover 5 and the socket section 18, and the outer peripheral wall of the socket section 18. This groove is used to install the sealing ring 19.

[0036] To improve the structural strength, the socket section 18 and the outer cover 5 are integrally provided.

[0037] The corner where the socket section 18 is connected to the outer cover 5 is provided with rounded corners.

[0038] To improve the assembly efficiency among the plug cap 1, the outer cover 5, and the plug 2, an annular flange 20 is provided inside the socket section 18 at the end far from the outer cover 5. The bottom end of the plug 2 is provided in a stepped shape. Specifically, the outer diameter of the bottom end of the plug 2 is larger than the outer diameter of the middle part to form a stepped shape. The stepped surface at the bottom end of the plug 2 abuts against one end of the annular flange 20 close to the outer cover 5. When the plug 2 enters from the bottom of the outer cover 5, the annular flange 20 blocks the stepped surface at the bottom end of the plug 2, and the assembly of the two can be completed. The inner peripheral wall of the plug cap 1 is provided in a stepped shape, and the stepped surface of the inner peripheral wall of the plug cap 1 abuts against one end of the annular flange 20 far from the outer cover 5. When the plug cap 1 is sleeved downward on the socket section 18, when it is blocked by the annular flange 20, it means that the assembly of the two is completed, and at the same time, the circular groove for setting the sealing ring 19 is reserved.

[0039] An annular groove is provided in the middle of the plug 2 to form a connection cavity. On the basis that the bottom stepped surface abuts against one end of the annular flange 20 close to the outer cover 5, a locking ring 21 is provided at the position corresponding to the upper wall surface of the annular groove on the inner wall of the plug cap 1. The cross-section of the locking ring 21 is triangular or semi-circular, etc., so that its upper and lower surfaces have a guiding function. The plug cap 1 itself is made of a material with the ability of deformation self-recovery, such as plastic. After the plug 2 is assembled in place, when the plug cap 1 cooperates with the socket section 18 downward, the locking ring 21 of the plug cap 1 abuts against the position below the upper wall surface of the annular groove of the plug cap 1, thereby restricting the downward movement of the plug 2, and cooperating with the annular flange 20 to restrict the upward movement of the plug 2, improving the assembly stability of the plug 2.

[0040] One end of the inner cover 6 close to the pole shoe 12 is provided with an annular connecting piece 22. The inner peripheral wall of the wire frame 7 and the outer peripheral wall of the pole shoe 12 are both stepped structures. The annular connecting piece 22 is arranged between the stepped surface of the wire frame 7 and the stepped surface of the pole shoe 12. The annular connecting piece 22 is welded to the pole shoe 12. Specifically, the outer peripheral edge of the annular connecting piece 22 is welded to the outer peripheral edge of the stepped surface of the pole shoe 12.

[0041] The annular connecting piece 22 is integrally provided with the inner cover 6 to improve the structural strength.

[0042] Adaptations made according to actual needs are within the protection scope of the present utility model.

[0043] It should be noted that for those skilled in the art, obviously the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0044] In the present utility model, specific examples are used to elaborate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A convenient power-connected solenoid valve, comprising a solenoid valve body, characterized in that, The pin of the solenoid valve body includes a power connection end connected to an external power supply setting and a wiring end connected to the coil copper wire. The power connection end and the wiring end are arranged in an L shape. A card slot for facilitating the winding connection of the coil copper wire is provided on the wiring end, and the wiring end is welded to the coil copper wire.

2. The convenient power-connecting solenoid valve according to claim 1, characterized in that, The wiring end is connected to the coil copper wire by resistance welding.

3. The convenient power-connecting solenoid valve according to claim 1, wherein The pin is injection molded and arranged in the plug of the solenoid valve body.

4. The convenient power-connecting solenoid valve according to claim 1, wherein The card slot corresponds to the wire holder of the solenoid valve body.

5. The convenient power-connecting solenoid valve according to claim 1, wherein The pin is a copper pin.

6. The convenient power-connecting solenoid valve according to claim 3, characterized in that A plug cap is sleeved on the outer periphery of the plug. One end of the plug cap is sleeved on the outer cover of the solenoid valve body. There is a connection cavity between the plug and the plug cap, and the wiring end is located in the connection cavity.

7. The convenient power-connecting solenoid valve according to claim 6, wherein A socket section is provided at the top of the outer cover. The outer diameter of the socket section is smaller than the outer diameter of the outer cover. The plug cap is sleeved on the socket section, and a sealing ring for sealing the gap between the plug cap and the socket section is sleeved on the socket section.

8. The convenient power-connected solenoid valve according to claim 7, characterized in that, The socket section is integrally provided with the outer cover.

9. The convenient power-connecting solenoid valve according to claim 7, wherein An annular flange is provided inward at one end of the socket section away from the outer cover. The bottom end of the plug is arranged in a stepped shape, and the stepped surface at the bottom end of the plug abuts against one end of the annular flange close to the outer cover. The inner peripheral wall of the plug cap is arranged in a stepped shape, and the stepped surface of the inner peripheral wall of the plug cap abuts against one end of the annular flange away from the outer cover.

10. The convenient power-connecting solenoid valve according to claim 1, characterized in that, An annular connecting piece is provided at one end of the inner cover of the solenoid valve body close to the pole shoe. The inner peripheral wall of the wire holder of the solenoid valve body and the outer peripheral wall of the pole shoe are both stepped structures. The annular connecting piece is arranged between the stepped surface of the wire holder and the stepped surface of the pole shoe, and the annular connecting piece is welded to the pole shoe.

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