Compatible spacer for solenoid valves

Abstract

To provide a compatible spacer for solenoid valves that can standardize connectors attached to both small and large solenoid valves, thereby reducing the cost of parts and, in turn, the cost of manufacturing solenoid valves.SOLUTION: The compatible spacer for solenoid valves is configured to standardize a connector that can be attached to a short pin plug of a small solenoid valve and a connector that can be attached to a long pin plug of a large solenoid valve. A connector 190 is configured to match the length of a short pin plug 182 of the small solenoid valve. The compatible spacer is attached to a long pin plug 184 of the large solenoid valve prior to the connector. The protrusion length of the long pin plug 184 is aligned with the length of the short pin plug 182 of the small solenoid valve.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an interchangeable spacer for a solenoid valve that enables a connector to be attached to a short pin plug of a small solenoid valve and a connector to be attached to a long pin plug of a large solenoid valve to be common to each other. [Background technology]

[0002] Solenoid valves are known as devices for hydraulic control in industrial facilities. For example, Patent Document 1 discloses "an electromagnetic valve comprising a solenoid coil body, a valve body driven by the solenoid coil of the solenoid coil body, and a lead wire connected to the solenoid coil of the solenoid coil body, the solenoid coil body and the lead wire being formed separately, and the lead wire being detachably connected to the solenoid coil of the solenoid coil body."

[0003] According to Patent Document 1, "By making it possible to detachably connect lead wires to the solenoid coil body, it is possible to provide a solenoid valve in which the solenoid coil body can be used as commonly as possible for multiple types of lead wires." [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-27351 A Summary of the Invention [Problem to be solved by the invention]

[0005] A solenoid valve is provided with a pin plug, and a connector with lead wires is attached to the pin plug, so that current is supplied to the solenoid valve (strictly speaking, the solenoid coil) via the lead wires and the pin plug. Solenoid valves are available in various sizes depending on the flow rate of hydraulic oil to be controlled, and currently connectors corresponding to each size are available. However, if a connector suitable for each size of solenoid valve is used, the parts and therefore the solenoid valve will be expensive. For this reason, there has been a demand for a standardized connector for solenoid valves of various sizes.

[0006] Here, the pin plug of a small solenoid valve is short, while the pin plug of a large solenoid valve is long. Therefore, if a connector for a small solenoid valve is simply applied to a large solenoid valve, the long pin plug will be exposed from the connector. This may cause problems such as rusting in the exposed parts of the pin connector.

[0007] In view of these problems, the present invention aims to provide a compatible spacer for solenoid valves that enables the use of a common connector for attachment to small solenoid valves and large solenoid valves, thereby reducing component costs and ultimately the manufacturing costs of the solenoid valves. [Means for solving the problem]

[0008] In order to solve the above problems, a representative configuration of a compatible spacer for solenoid valves according to the present invention is a compatible spacer for solenoid valves that standardizes a connector to be attached to a short pin plug of a small solenoid valve and a connector to be attached to a long pin plug of a large solenoid valve, the connector being configured to match the length of the pin plug of the small solenoid valve, and the compatible spacer being attached to the pin plug of the large solenoid valve before the connector, and the protruding length of the pin plug being aligned with the length of the pin plug of the small solenoid valve. Effect of the Invention

[0009] According to the present invention, it is possible to provide a compatible spacer for solenoid valves, which enables the connectors to be attached to small solenoid valves and large solenoid valves to be standardized, thereby enabling the reduction in parts costs and ultimately the manufacturing costs of the solenoid valves. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a diagram illustrating a solenoid valve. [Diagram 2] 1A and 1B are diagrams illustrating a connector attached to a pin plug. [Diagram 3] 3A to 3C are four-sided views of a compatible spacer for a solenoid valve according to the present embodiment. [Figure 4] 1A and 1B are diagrams illustrating attachment of a connector to a long pin plug. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0012] (solenoid valve) FIG. 1 is a diagram illustrating a solenoid valve. FIG. 1(a) is a diagram illustrating the internal structure of a small solenoid valve (hereinafter referred to as a small solenoid valve 100a). FIG. 1(b) is a plan view of the small solenoid valve 100a of FIG. 1(a) observed from above. FIG. 1(c) is a diagram illustrating the internal structure of a large solenoid valve (hereinafter referred to as a large solenoid valve 100b). FIG. 1(d) is a plan view of the large solenoid valve 100b of FIG. 1(a) observed from above.

[0013] The small solenoid valve 100a shown in Fig. 1(a) and the large solenoid valve 100b shown in Fig. 1(c) have the same internal structure, so the internal structure will be described below using the small solenoid valve 100a as an example. For the large solenoid valve 100b, the same reference numerals will be used to designate the same components as those in the small solenoid valve 100a, and descriptions thereof will be omitted.

[0014] 1(a), the miniature solenoid valve 100a includes a cylindrical sleeve 110 in which multiple ports 112a, 112b are formed, and a pair of casings 120 arranged on either side of the sleeve 110. A spool 130 is arranged inside the sleeve 110, and the multiple discharge ports 112a, 112b are switched by the spool 130 reciprocating in the axial direction of the sleeve 110.

[0015] The casing 120 accommodates a solenoid coil 140, a plunger 150, a fixed core 160, and a pusher 170. When a current is supplied to the solenoid coil 140, it is energized and excited. The plunger 150 is then attracted to the fixed core 160, and the plunger 150 presses the pusher 170 against the spool 130. This causes the spool 130 to move inside the sleeve 110, opening and closing the ports 112a and 112b.

[0016] As shown in Figures 1(a) and (b), a pin plug (hereinafter referred to as a short pin plug 182) that supplies current to the solenoid coil 140 is arranged so as to protrude from the casing 120 of the small solenoid valve 100a. As shown in Figures 1(c) and (d), a pin plug (hereinafter referred to as a long pin plug 184) that supplies current to the solenoid coil 140 is arranged so as to protrude from the casing 120 of the large solenoid valve 100b. The length of the short pin plug 182 is L1, and the length of the long pin plug 184 is L2 (L1 <L2)。

[0017] Fig. 2 is a diagram illustrating a connector 190 attached to a short pin plug 182. Fig. 2(a) is a diagram illustrating the short pin plug 182 and the connector 190 attached thereto. Fig. 2(b) is a diagram illustrating a state in which the connector 190 is attached to the short pin plug 182.

[0018] As shown in FIG. 2(a), the connector 190 has a lead wire 192 connected to an external power source (not shown), and has an insertion hole 194 formed therein into which the short pin plug 182 is inserted. The length of the insertion hole 194 is the same as that of the short pin plug L1. That is, the connector 190 is configured to match the length of the short pin plug 182 of the miniature solenoid valve 100a. As a result, when the connector 190 is attached to the short pin plug 182 as shown in FIG. 2(b), the short pin plug 182 is not exposed from the insertion hole 194, but is entirely inserted into the insertion hole 194. The connector 190 is fastened to the casing 120 by a screw 210 at a screw hole 196.

[0019] 2(a) is applied to the long pin plug 184, the portion L3 of the long pin plug 184 that is longer than L1 is exposed from the connector 190 as shown in FIG 2(c). This may make the long pin plug 184 more susceptible to damage such as rust in the area of ​​exposed L3.

[0020] 3 is a four-sided view of the compatible spacer for a solenoid valve according to this embodiment. As shown in FIG. 3, the compatible spacer for a solenoid valve according to this embodiment (hereinafter referred to as a compatible spacer 200) has a rectangular block shape and has a screw hole 202 and an insertion hole 204.

[0021] The screw holes 202 penetrate the compatible spacer 200 in the thickness direction, and the compatible spacer 200 is fastened to the casing 120 by screws 210 (see FIG. 4). The insertion holes 204 penetrate the compatible spacer 200 in the length direction of the long pin plugs 184, and the long pin plugs 184 are inserted into the insertion holes 204. The length of the insertion holes 204 (in other words, the width of the compatible spacer 200) is set to "a length L3 which is the difference between the length of the short pin plugs 182 and the length of the long pin plugs 184."

[0022] 4 is a diagram for explaining the attachment of the connector 190 to the long pin plug 184. When attaching the connector 190 to the long pin plug 184 of the large solenoid valve 100b, first, the long pin plug 184 shown in FIG. 4(a) is inserted into the insertion hole 204 of the compatible spacer 200. As a result, the compatible spacer 200 is attached to the long pin plug 184 of the large solenoid valve 100b before the connector 190, as shown in FIG. 4(b). At this time, the long pin plug 184 protrudes from the compatible spacer 200 by a length L1.

[0023] Next, the long pin plug 184 shown in Fig. 4(b) is inserted into the insertion hole 194 of the connector 190. As a result, the long pin plug 184 protruding from the compatible spacer 200 by the length L1 is accommodated in the insertion hole 194 as shown in Fig. 4(c), and the connector 190 is attached to the large solenoid valve 100b with the compatible spacer 200 interposed therebetween. In other words, the long pin plug 184 is inserted into the insertion hole 204 of the compatible spacer 200 and the insertion hole 194 of the connector 190 and is thus protected.

[0024] As described above, by attaching the compatible spacer 200 to the long pin plug 184 before the connector 190, the protruding length of the long pin plug 184 can be made the same as the length L1 of the pin plug of the small solenoid valve 100a. Therefore, the connector 190 attached to the small solenoid valve 100a and the large solenoid valve 100b can be made common, which makes it possible to reduce the parts cost and therefore the manufacturing cost of the solenoid valve.

[0025] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an example. It is clear that a person skilled in the art can think of various modified or altered examples within the scope of the claims, and it is understood that such examples also naturally belong to the technical scope of the present invention. [Industrial Applicability]

[0026] The present invention can be used as an interchangeable spacer for solenoid valves that allows a common connector to be attached to a short pin plug of a small solenoid valve and a common connector to be attached to a long pin plug of a large solenoid valve. [Explanation of symbols]

[0027] 100a...small solenoid valve, 100b...large solenoid valve, 110...sleeve, 112a...port, 112b...port, 120...casing, 130...spool, 140...solenoid coil, 150...plunger, 160...stationary core, 170...pusher, 182...short pin plug, 184...long pin plug, 190...connector, 192...lead wire, 194...through hole, 196...screw hole, 200...interchangeable spacer, 202...screw hole, 204...through hole, 210...screw

Claims

[Claim 1] A solenoid valve compatible spacer that allows a connector to be attached to a short pin plug of a small solenoid valve and a connector to be attached to a long pin plug of a large solenoid valve to be common to each other, The connector is configured to match the length of the pin plug of the small solenoid valve, The compatible spacer for a solenoid valve is attached to the pin plug of the large solenoid valve before the connector, and the protruding length of the pin plug is aligned with the length of the pin plug of the small solenoid valve.

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