Structure of a silent gas solenoid valve

Abstract

The present invention discloses a structure of a silent gas solenoid valve, comprising: a moving iron core, a static iron core and a conduit; the moving iron core and the static iron core are respectively located at opposite ends of the conduit, the moving iron core comprises a first section and a second section, the first section and the second section are fixedly connected by a connecting piece, the second section is provided with a stamping cavity, the static iron core partially extends into the stamping cavity, and partially is located outside the stamping cavity, an elastic member is provided in the stamping cavity, one end of the elastic member abuts against the end of the connecting piece, and the other end abuts against the end of the static iron core. In the structure, the moving iron core adopts a split structure, the first section adopts a cold heading or injection molding process, and the second section adopts stamping molding, so that the production cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valves, and in particular to the structure of a silent gas solenoid valve. Background Art

[0002] See also Figure 1 , Figure 1 The upper section of the moving iron core 1' needs to be processed by cold heading, and the tapered groove of the lower section of the moving iron core 1' needs to be formed by CNC machining, which makes the production cost of the moving iron core 1' too high, and thus leads to a relatively high production cost of the structure of the silent gas solenoid valve. Summary of the invention

[0003] In view of the above problems existing in the prior art, it is intended to provide a silent gas solenoid valve structure with a moving iron core adopting a split structure, a first stage of cold heading or injection molding process, and a second stage of stamping molding, so that the production cost is greatly reduced.

[0004] The specific technical solutions are as follows:

[0005] A structure of a silent gas solenoid valve mainly comprises: a moving iron core, a static iron core and a guide tube;

[0006] The moving iron core and the static iron core are respectively located at opposite ends of the conduit, the moving iron core includes a first section and a second section, the first section and the second section are fixedly connected by a connecting piece, the second section is provided with a stamping cavity, the static iron core partially extends into the stamping cavity, or is wrapped outside the second section.

[0007] The structure of the silent gas solenoid valve described above also has the following feature: the second section is provided with a connecting through hole, and the connecting piece is clamped in the connecting through hole.

[0008] The structure of the silent gas solenoid valve described above also has the following feature: the connecting piece is a snap-fit ​​structure, and the snap-fit ​​structure is snap-fitted to the connecting through hole.

[0009] The structure of the above-mentioned silent gas solenoid valve also has such a feature that the connecting piece is a riveted structure, one end of the riveted structure is located in the stamping cavity, and the other end passes through the connecting hole and extends into the first section, and the first section and the second section are fixed by riveting.

[0010] The structure of the above-mentioned silent gas solenoid valve also has such a feature that the end of the static iron core is arranged as a frustum-shaped structure, the frustum-shaped structure partially extends into the stamping cavity, and partially is located outside the stamping cavity, and the side wall of the stamping cavity is provided with a conical surface adapted to the shape of the frustum-shaped structure, and the frustum-shaped structure and the conical surface are spaced a preset distance apart to form an air gap.

[0011] The structure of the silent gas solenoid valve mentioned above also has the following feature: the inclination angle between the frustum-shaped structure and the conical surface is 5° to 40°.

[0012] The structure of the above-mentioned silent gas solenoid valve also has the following characteristics: the static iron core is arranged as a groove-type structure, the groove-type structure is wrapped around the outside of the second section, the outer wall of the second section and the inner wall of the static iron core are both arranged as conical surfaces, and the two conical surfaces are spaced a preset distance apart to form an air gap.

[0013] The structure of the silent gas solenoid valve mentioned above also has the feature that the inclination angle of the conical surface is 5° to 40°.

[0014] The structure of the silent gas solenoid valve described above also has the following feature: an elastic member is arranged in the stamping cavity, one end of the elastic member abuts against the end of the connecting member, and the other end abuts against the static iron core.

[0015] The positive effects of the above technical solution are:

[0016] The present invention provides a structure of a silent gas solenoid valve, wherein the moving iron core adopts a split structure, the first section adopts a cold heading or injection molding process, and the second section adopts stamping, so that the production cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the prior art;

[0018] Figure 2 A schematic structural diagram of a silent gas solenoid valve provided in a first embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of a moving iron core provided in a first embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of a moving iron core provided in a second embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the structure of a silent gas solenoid valve provided in the second embodiment of the present invention.

[0022] In the accompanying drawings: 1. moving iron core; 11. first section; 111. boss; 12. second section; 121. connecting through hole; 122. stamping cavity; 123. conical surface; 13. connecting piece; 2. stationary iron core; 21. stepped hole; 22. frustum-shaped structure; 221. air gap; 23. slot-shaped structure; 3. conduit; 4. bracket; 41. accommodating cavity; 42. through hole; 45. fixing plate; 5. rubber pad; 6. elastic piece. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] Please refer to , Figures 2 to 5 , Figure 2 A schematic structural diagram of a silent gas solenoid valve provided in a first embodiment of the present invention; Figure 3 A schematic structural diagram of a moving iron core provided in a first embodiment of the present invention; Figure 4 A schematic structural diagram of a moving iron core provided in a second embodiment of the present invention; Figure 5 This is a schematic structural diagram of the structure of a silent gas solenoid valve provided in the second embodiment of the present invention.

[0027] The invention discloses a structure of a silent gas solenoid valve, which includes a moving iron core 1, a static iron core 2, a guide tube 3, a bracket 4 and a rubber pad 5.

[0028] The bracket 4 is a shell structure, including a receiving chamber 41, one end of which is sealed by a fixing plate 45, and the other end of which is provided with a through hole 42 connected to the receiving chamber 41. The through hole 42 is coaxially arranged with the receiving chamber 41 and is arranged on the side of the receiving chamber 41 facing the rubber pad 5.

[0029] The catheter 3 is disposed in the bracket 4 . More specifically, the catheter 3 is disposed in the accommodating cavity 41 and is coaxially disposed with the through hole 42 .

[0030] The moving iron core 1 and the stationary iron core 2 are located at opposite ends of the guide tube 3 .

[0031] Specifically, the moving iron core 1 is movably disposed in the guide tube 3 , and one end thereof extends out of the guide tube 3 and the bracket 4 and is connected to the rubber pad 5 .

[0032] Specifically, the moving iron core 1 includes a first section 11 and a second section 12 .

[0033] The second section 12 is provided with a stamping cavity 122. Specifically, the stamping cavity 122 is formed by stamping, and the cost of stamping is much lower than that of CNC machining.

[0034] The first section 11 and the second section 12 are fixedly connected via a connecting member 13 .

[0035] More specifically, the first section 11 is provided with a boss 111, and the rubber pad 5 is provided with a stepped hole 21 matching the shape of the boss 111. The aperture of the stepped hole 21 toward the bracket 4 is smaller than the aperture away from the bracket 4. The boss 111 is accommodated in the stepped hole 21 and fixed in the rubber pad 5 and cannot fall out of the rubber pad 5, so that the moving iron core 1 and the rubber pad 5 are fixedly connected together.

[0036] Furthermore, the second section 12 is provided with a connecting hole 121, and the connecting member 13 is clamped in the connecting hole 121. Figure 3 As shown, optionally, the connector 13 is a snap-fit ​​structure. Specifically, the first section 11 is made of plastic material, the connector 13 is integrally formed with the first section 11, the connector 13 is configured as a claw-shaped structure, and the end of the connector 13 is configured as a chamfered shape, so that the connector 13 can be easily inserted into the second section 12, and the claw-shaped structure is elastic, and the claw-shaped structure can be kneaded to pass through the connecting hole 121, and the diameter is restored after passing through, so that the connector 13 is clamped to the connecting hole 121.

[0037] like Figure 4As shown, optionally, the connector 13 is a riveted structure, one end of which is located in the stamping cavity, and the other end passes through the connecting hole 121 and extends into the first section 11, and the first section 11 and the second section 12 are fixed by riveting. Specifically, the first section 11 is made of metal and can be formed by cold heading, and the connector 13 is a structure such as a rivet, which passes through the connecting hole 121 and extends into the first section 11, and is riveted to achieve fixed connection.

[0038] The moving iron core 1 in this embodiment adopts cold heading or injection molding of the first section 11 and stamping of the second section 12, which is much cheaper than cold heading plus CNC molding in the prior art. This greatly reduces the production cost of the structure of the silent gas solenoid valve. Figure 2 As shown, part of the static iron core 2 extends into the stamping cavity 122 , and part of it is located outside the stamping cavity 122 .

[0039] Specifically, the end of the static iron core 2 is provided with a frustum-shaped structure 22, part of the frustum-shaped structure 22 extends into the stamping cavity 122, and part of the frustum-shaped structure 22 is located outside the stamping cavity 122, and the side wall of the stamping cavity 122 is provided with a conical surface 123 that matches the shape of the frustum-shaped structure 22, and a preset distance is spaced between the frustum-shaped structure 22 and the conical surface 123 to form an air gap 221. Gas is provided in the air gap 221, and the moving iron core 1 can move toward the static iron core 2 under the action of the electromagnetic force.

[0040] Optionally, the inclination angle between the frustum-shaped structure 22 and the conical surface 123 is 5° to 40°.

[0041] like Figure 5 As shown, the static iron core 2 is wrapped outside the second section 12 .

[0042] The static iron core 2 is configured as a groove-shaped structure 23, and the groove-shaped structure 23 is wrapped around the outside of the second section 12. The outer wall of the second section 12 and the inner wall of the static iron core 2 are both configured as conical surfaces 123, and the two conical surfaces 123 are spaced a preset distance apart to form an air gap 221.

[0043] Optionally, the inclination angle of the conical surface 123 is 5° to 40°.

[0044] The structure of the silent gas solenoid valve provided in the embodiment of the present invention is that the moving iron core 1 adopts a split structure, the first section 11 adopts a cold heading or injection molding process, and the stamping cavity 122 of the second section 12 adopts stamping forming. Stamping forming is much cheaper than CNC machining. Therefore, the forming of the moving iron core 1 is much cheaper than the forming in the prior art, thereby greatly reducing the production cost of the structure of the silent gas solenoid valve, and the setting of the stamping cavity 122 can realize the function expansion of the entire gas solenoid valve, for example, adding structures in the stamping cavity 122 to realize multiple functions.

[0045] Furthermore, an elastic member 6 is disposed in the stamping cavity 122 , one end of the elastic member 6 abuts against the end of the connecting member 13 , and the other end of the elastic member 6 abuts against the end of the static iron core 2 .

[0046] Specifically, the elastic member 6 is used to reset the rubber pad 5 and the moving iron core 1 when they are not acted upon by the electromagnetic force. Optionally, the elastic member 6 may be a reset spring.

[0047] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A structure of a silent gas solenoid valve, characterized in that: include: Moving iron core, stationary iron core and conduit; The moving iron core and the static iron core are respectively located at opposite ends of the conduit, the moving iron core comprises a first section and a second section, the first section and the second section are fixedly connected by a connecting piece, the second section is provided with a stamping cavity, the static iron core part extends into the stamping cavity or is wrapped outside the second section, the second section is provided with a connecting through hole, the connecting piece is clamped in the connecting through hole, the connecting piece is a riveted structure, one end of the riveted structure is located in the stamping cavity, and the other end passes through the connecting through hole and extends into the first section, and the first section and the second section are fixed by riveting; The first section is formed by cold heading or injection molding, and the second section is formed by stamping.

2. The structure of the silent gas solenoid valve according to claim 1 is characterized in that: The end of the static iron core is arranged as a frustum-shaped structure, wherein the frustum-shaped structure partially extends into the stamping cavity and partially is located outside the stamping cavity, and the side wall of the stamping cavity is arranged with a conical surface adapted to the shape of the frustum-shaped structure, and an air gap is formed between the frustum-shaped structure and the conical surface at a preset distance.

3. The structure of the silent gas solenoid valve according to claim 2 is characterized in that: The inclination angle between the frustum-shaped structure and the conical surface is 5° to 40°.

4. The structure of the silent gas solenoid valve according to claim 1 is characterized in that: The static iron core is configured as a slot-type structure, and the slot-type structure is disposed on the outside of the second section. The outer wall of the second section and the inner wall of the static iron core are both configured as conical surfaces, and a preset distance is spaced between the two conical surfaces to form an air gap.

5. The structure of the silent gas solenoid valve according to claim 4 is characterized in that: The inclination angle of the conical surface is 5° to 40°.

6. The structure of the silent gas solenoid valve according to any one of claims 1 to 5, characterized in that: An elastic member is arranged in the stamping cavity, one end of the elastic member abuts against the end of the connecting member, and the other end of the elastic member abuts against the static iron core.

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