Air leakage electromagnetic valve

Abstract

The utility model discloses an air leakage electromagnetic valve which comprises a machine shell, an inner core, a coil and a wire outlet plate, the inner core, the coil and the wire outlet plate are installed in the machine shell, the inner core is installed in the machine shell, the coil is installed on the inner core, an air leakage channel is arranged along the machine shell and the inner core, the wire outlet plate is installed at one end of the machine shell, and an air leakage hole communicated with the air leakage channel is formed in the wire outlet plate. The magnetic-conductive stop piece is composed of a movable iron core and a sealing rubber pad wrapping the movable iron core, and the sealing rubber pad is rotationally installed between the inner core and the wire outlet plate so as to block the air leakage channel when the coil is powered on and open the air leakage channel when the coil is powered off; according to the electromagnetic valve, the movable iron core is wrapped by the sealing rubber pad to form the magnetic conducting stop piece, the magnetic conducting stop piece is rotationally installed between the inner core and the wire outlet plate, a spring does not need to be arranged, the structure of the electromagnetic valve is optimized, the product is further simplified, the movable iron core is wrapped by the sealing rubber pad, the sealing rubber pad is not prone to falling off, and the fault rate of the electromagnetic valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an air release solenoid valve. Background Art

[0002] The deflation valve is a key component in the sphygmomanometer. By controlling the degree of opening of the deflation valve, the deflation speed of the sphygmomanometer can be adjusted. The existing deflation solenoid valve has a complex structure, which is composed of a housing, a coil, a spring, a plastic frame, a sealing rubber pad, etc. The sealing rubber pad and the iron core are bonded. During use, the spring is easily deformed, and there is a risk of the sealing rubber pad and the iron core falling off. Utility Model Content

[0003] In view of the defects in the prior art, the utility model aims to provide a deflation solenoid valve with a sealing rubber pad that is not easy to fall off.

[0004] The technical solution adopted by the utility model is:

[0005] The air leakage solenoid valve comprises a casing, an inner core, a coil and an outlet plate installed in the casing, the inner core is installed in the casing, the coil is installed on the inner core, an air leakage channel is provided along the casing and the inner core, the outlet plate is installed at one end of the casing, and an air leakage hole connected to the air leakage channel is opened on the outlet plate; it also comprises a magnetic stopper, which is composed of a moving iron core and a sealing rubber pad wrapped on the moving iron core, and the sealing rubber pad is rotatably installed between the inner core and the outlet plate to block the air leakage channel when the coil is energized, and open the air leakage channel when the coil is de-energized.

[0006] Furthermore, the sealing rubber pad and the moving iron core are integrally formed.

[0007] Furthermore, the sealing rubber pad includes a blocking portion located in the middle and a wrapping portion located at the periphery of the blocking portion, and a mounting groove is provided between the blocking portion and the wrapping portion, and the moving iron core is mounted in the mounting groove.

[0008] Furthermore, the mounting groove is a C-shaped structure.

[0009] Furthermore, the sealing rubber pad also includes a mounting portion, the blocking portion and the wrapping portion are both connected to the mounting portion, and the mounting portion is rotatably mounted on the housing.

[0010] Furthermore, the inner core is provided with an annular coil groove, and the coil is installed in the coil groove.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0013] Figure 1 A schematic diagram of the structure of the deflation solenoid valve provided in an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the structure of the magnetic stopper provided in an embodiment of the present application.

[0015] Among them, the casing 1, the inner core 2, the coil 3, the air leakage channel 4, the magnetic stopper plate 5, the sealing rubber pad 51, the blocking part 511, the wrapping part 512, the mounting part 513, the moving iron core 52, and the outlet board 6. DETAILED DESCRIPTION

[0016] Here, it should be noted that the functions and methods involved in the present invention are merely conventional adaptive applications of the prior art. Therefore, the improvement of the present invention on the prior art is essentially the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present invention involves some functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present invention is to better illustrate the present invention so as to better understand the present invention.

[0017] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0019] See also Figure 1-2The present application discloses an air leakage solenoid valve, comprising a casing 1 and an inner core 2, a coil 3 and an outlet plate 6 installed in the casing 1, wherein the inner core 2 is installed in the casing 1, the coil 3 is installed on the inner core 2, an air leakage channel 4 is provided along the casing 1 and the inner core 2, the outlet plate 6 is installed at one end of the casing 1, and an air leakage hole connected to the air leakage channel 4 is opened on the outlet plate 6; it also includes a magnetic stopper 5, which is composed of a moving iron core 52 and a sealing rubber pad wrapped on the moving iron core 52, and the sealing rubber pad is rotatably installed between the inner core 2 and the outlet plate 6 to block the air leakage channel 4 when the coil 3 is energized, and open the air leakage channel 4 when the coil 3 is de-energized.

[0020] The present application forms a magnetic stopper 5 by wrapping a sealing rubber pad on the moving iron core 52, and rotatably installing the magnetic stopper 5 between the inner core 2 and the outlet plate 6. When the coil 3 is energized, the magnetic stopper 5 rotates toward the inner core 2 under the action of the magnetic force, and blocks the air leakage channel 4. When the coil 3 is de-energized, the magnetic force disappears, and the magnetic stopper 5 rotates away from the inner core 2 to open the air leakage channel 4. The gas can flow out from the air leakage channel 4 to the air suction hole to achieve air leakage. There is no need to set a spring, which optimizes the structure of the solenoid valve and further simplifies the product. The sealing rubber pad 51 is wrapped on the moving iron core 52 and is not easy to fall off, thereby reducing the failure rate of the solenoid valve.

[0021] The inner core 2 is fixedly installed in the casing 1. The inner core 2 is provided with an annular coil groove. The coil 3 is installed in the coil groove. The magnetic force is generated when the passage is on, and the magnetic force disappears when the power is off.

[0022] A first fixing column is provided at one end of the housing 1, and the outlet plate 6 is fixed on the first fixing column.

[0023] The sealing rubber pad and the moving iron core 52 are integrally formed to improve the stability of the two and prevent the sealing rubber pad 51 from falling off.

[0024] The sealing rubber pad 51 includes a blocking portion 511, a wrapping portion 512 and a mounting portion 513. The blocking portion 511 is located in the middle, and the wrapping portion 512 is located on the periphery of the blocking portion 511. There is a mounting groove between the blocking portion 511 and the wrapping portion 512. The blocking portion 511 and the wrapping portion 512 are both connected to the mounting portion 513, so that the mounting groove is a C-shaped structure; the moving iron core 52 is a C-shaped structure that matches the mounting groove, and the moving iron core 52 is installed in the mounting groove. A second fixing column is provided at one end of the housing 1, and a fixing hole corresponding to the second fixing column is provided on the mounting portion 513. The mounting portion 513 is rotatably mounted on the second fixing column of the housing 1 through the fixing hole, so as to realize the rotational cooperation between the magnetic stopper 5 and the housing 1.

[0025] When the coil 3 is energized, the magnetic stopper 5 rotates toward the inner core 2, and the sealing portion 511 of the sealing rubber pad 51 blocks the air leakage channel 4; when the coil 3 is de-energized, the magnetic stopper 5 rotates toward the outlet plate 6, and the sealing portion 511 of the sealing rubber pad 51 leaves the air leakage channel 4.

[0026] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, systems and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, systems, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, systems, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A deflation solenoid valve, comprising a housing, an inner core, a coil and an outlet plate installed in the housing, wherein the inner core is installed in the housing, the coil is installed on the inner core, a deflation channel is provided along the housing and the inner core, the outlet plate is installed at one end of the housing, and a deflation hole connected to the deflation channel is provided on the outlet plate; characterized in that: It also includes a magnetic stopper, which consists of a moving iron core and a sealing rubber pad wrapped around the moving iron core. The sealing rubber pad is rotatably installed between the inner core and the outlet plate to block the air leakage channel when the coil is energized and open the air leakage channel when the coil is de-energized.

2. The deflation solenoid valve according to claim 1, characterized in that: The sealing rubber pad is integrally formed with the moving iron core.

3. The deflation solenoid valve according to claim 1, characterized in that: The sealing rubber pad comprises a blocking portion located in the middle and a wrapping portion located at the periphery of the blocking portion, a mounting groove is provided between the blocking portion and the wrapping portion, and the moving iron core is mounted in the mounting groove.

4. The deflation solenoid valve according to claim 3, characterized in that: The installation groove is a C-shaped structure.

5. The deflation solenoid valve according to claim 3, characterized in that: The sealing rubber pad also includes a mounting portion, the blocking portion and the wrapping portion are both connected to the mounting portion, and the mounting portion is rotatably mounted on the housing.

6. The deflation solenoid valve according to claim 5, characterized in that: The inner core is provided with an annular coil groove, and the coil is installed in the coil groove.

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