Improved gas valve driven by microswitch

Abstract

A gas valve driven by an improved microswitch comprises a valve cover, a valve rod, a driving piece, a clamping spring and the microswitch, the valve cover is provided with a valve rod channel and a fixed seat plate, the valve rod is provided with two annular clamping grooves, and the driving piece is cylindrical and is provided with a circular hole along the axis and a cone-frustum-shaped driving part; the microswitch is fixed on the fixed seat plate, the valve rod is in sliding fit with the valve rod channel, the clamping spring is embedded into the annular clamping grooves, and the driving piece is arranged on the valve rod between the two annular clamping grooves; and the cone-frustum-shaped driving part corresponds to a button of the microswitch. Compared with the prior art, the valve cover is simple in structure; and the transmission member is provided with the cone-frustum-shaped driving part, so that the transmission rod is accurately and reliably matched with the button of the microswitch.

Description

Technical Field

[0001] The utility model relates to a gas valve for a stove. Background Art

[0002] At present, the existing technology, Chinese patent 202020274486.9, a gas valve for a stove, includes a valve body, with a valve core hole inside; a valve core, which is vertically arranged in the valve core hole, and has an axial channel inside, and has a contraction channel that gradually contracts inward from bottom to top; a valve stem, the lower end of which has a convex portion extending outward, the convex portion is located in the contraction channel, and a flow channel is formed between the convex portion and the peripheral wall of the contraction channel; a micro switch, which is arranged on the valve body; a pressure plate, which is located above the micro switch, and moves up and down under the drive of the valve stem to disengage or trigger the micro switch; an elastic member, which always makes the valve stem have a tendency to move upward and disengage the pressure plate from the micro switch; a plunger, which is blocked at the upper end of the contraction channel, is located above the convex portion, and is enclosed with the convex portion and the side wall of the contraction channel to form a chamber connected to the flow channel. The problem is that in order to prevent the pressure plate from rotating and realize reciprocating movement along a straight line, the structure of the valve cover is complicated. Utility Model Content

[0003] The utility model aims to provide a gas valve driven by an improved micro switch, which has the characteristics of simple valve cover structure and accurate and reliable cooperation between a driving member and a micro switch.

[0004] The utility model is realized as follows: an improved gas valve driven by a micro switch, which is special in that it includes a valve cover, a valve stem, a driving member, a retaining spring and a micro switch.

[0005] The valve cover is provided with a valve stem channel and a fixed seat plate, and the valve stem is provided with two annular grooves.

[0006] The driving member is cylindrical, provided with a circular hole along the axis and a truncated cone-shaped driving portion;

[0007] The micro switch is fixed on the fixed seat plate, the valve stem and the valve stem channel are slidably matched, the clamping spring is embedded in the annular groove, and the driving member is arranged on the valve stem between the two annular grooves; the frustum-shaped driving part corresponds to the button of the micro switch.

[0008] The improved micro-switch driven gas valve is special in that: a valve stem sleeve is provided on the end plate of the valve cover, and the valve stem sleeve is communicated with the valve stem channel;

[0009] The end of the driving member opposite to the valve cover is provided with a cavity for avoiding air, and the cavity for avoiding air is communicated with the circular hole;

[0010] A retaining ring is located in the air-avoiding cavity and fits with the closed end; the valve stem sleeve and the air-avoiding cavity are matched in and out.

[0011] The improved micro-switch driven gas valve is special in that the button of the micro-switch is opposite to the valve stem.

[0012] The improved micro-switch driven gas valve is special in that the button of the micro-switch is opposite to the valve stem sleeve.

[0013] The improved microswitch-driven gas valve is special in that the valve stem sleeve cooperates with the retaining spring in the avoidance cavity to stop.

[0014] The utility model discloses an improved microswitch driven gas valve. Compared with the prior art, the valve cover has a simple structure. The transmission member has a truncated cone-shaped driving part, and the transmission rod and the button of the microswitch cooperate accurately and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the utility model.

[0016] Figure 2 It is a three-dimensional exploded view of the utility model.

[0017] Figure 3 It is the front view of the utility model.

[0018] Figure 4 It is a cross-sectional view of the utility model.

[0019] Figure 5 It is a three-dimensional cross-sectional view of the driving component of the utility model. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1

[0023] like Figure 1 , Figure 2As shown, an improved micro switch driven gas valve comprises a valve cover 1, a valve stem 2, a driving member 3, a retaining spring 4 and a micro switch 5.

[0024] The valve cover 1 is provided with a valve stem passage 11 and a fixed seat plate 12, and the valve stem 2 is provided with two annular grooves 21.

[0025] The driving member 3 is cylindrical, and is provided with a circular hole 31 along the axis and a truncated cone-shaped driving portion 32;

[0026] The micro switch 5 is fixed on the fixed seat plate 12, the valve stem 2 is slidably matched with the valve stem channel 11, the retaining spring 4 is engaged with the annular groove 21, and the driving member 3 is arranged on the valve stem 2 between the two annular grooves 21; the truncated cone-shaped driving part 32 corresponds to the button of the micro switch 5;

[0027] The button 51 of the micro switch 5 is opposite to the valve stem 2. The driving member 3 is cylindrical and is provided with a truncated cone-shaped driving portion 32. No matter how much the valve stem rotates, the truncated cone-shaped driving portion 32 is always opposite to the button 51. When the valve stem moves toward the micro switch 5, the truncated cone-shaped driving portion 32 can drive the button 51. Compared with the prior art, the structure of the valve cover is simplified.

[0028] Example 2

[0029] A valve stem sleeve 13 is provided on the end plate of the valve cover 1, and the valve stem sleeve 13 is communicated with the valve stem channel 11;

[0030] The end of the driving member 3 opposite to the valve cover 1 is provided with a cavity 33, and the cavity 33 is communicated with the circular hole 31;

[0031] A retaining spring 4 is located in the air-avoiding cavity 33 and fits with the closed end; the valve stem sleeve 13 and the air-avoiding cavity 33 are fitted in and out;

[0032] The button of the micro switch 5 is opposite to the valve stem sleeve 13 .

[0033] The valve stem sleeve 13 cooperates with the retaining spring 4 in the air-avoiding cavity 33 to stop in position.

[0034] like Figure 4 As shown, it is a static state; Figure 4 In this state, the valve stem 2 is pressed, the valve stem 2 moves to the left, the valve stem sleeve 13 enters the air-avoiding cavity 33 , and the truncated cone-shaped driving portion 32 of the transmission member 3 drives the button 51 of the micro switch 5 .

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An improved micro switch driven gas valve, characterized in that: Including valve cover, valve stem, drive, retaining spring and micro switch, The valve cover is provided with a valve stem channel and a fixed seat plate, and the valve stem is provided with two annular grooves. The driving member is cylindrical, provided with a circular hole along the axis and a truncated cone-shaped driving portion; The micro switch is fixed on the fixed seat plate, the valve stem and the valve stem channel are slidably matched, the clamping spring is embedded in the annular groove, and the driving member is arranged on the valve stem between the two annular grooves; the frustum-shaped driving part corresponds to the button of the micro switch.

2. An improved micro switch driven gas valve according to claim 1, characterized in that: A valve stem sleeve is provided on the end plate of the valve cover, and the valve stem sleeve is communicated with the valve stem channel; The end of the driving member opposite to the valve cover is provided with a cavity for avoiding air, and the cavity for avoiding air is communicated with the circular hole; A retaining ring is located in the air-avoiding cavity and fits with the closed end; the valve stem sleeve and the air-avoiding cavity are matched in and out.

3. The improved micro switch driven gas valve according to claim 1, characterized in that: The button of the micro switch is opposite to the valve stem.

4. An improved micro switch driven gas valve according to claim 2, characterized in that: The button of the micro switch is opposite to the valve stem sleeve.

5. An improved micro switch driven gas valve according to claim 2 or 4, characterized in that: The valve stem sleeve cooperates with the retaining spring in the avoidance cavity to stop.

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