WO2004084248A1 - Two-step switch vapor temperature controller - Google Patents

Abstract

This invention relates to the technical field of temperature controller, particularly, a two-step temperature controller. It overcomes the following shortcomings of prior art. For example, a temperature controller of prior art has only one switch state, so it is difficult to retain the water at a constant temperature when it is used for electrical water bottle. The temperature controller of the invention includes a base, a actuating arm, a first electrical connect terminal, a second electrical connect terminal, a fixed member, a movable member, a contact, a temperature-sensing bimetal, a top member, and a reset spring member. A third electrical connect terminal is positioned on the base, a assistant fixed member is positioned on the third electrical connect terminal, a assistant movable member pressing on the assistant fixed member is positioned on the second clectrical connect tenninal, and a assistant actuating member is positioned between the end of the actuating arm and the assistant movable member. Since the third electrical connect terminal and the assistant fixed member are positioned on the base, and a clamp which is clamping the actuating arm when being operated for the first time is positioned between the base and the actuating ann, there are two-step processes, each of which controls a set of switch, resulting in a set of temperature-ensing apparatus controling two switches.

Description

 Two-stage switching steam thermostat

Technical field

 The invention belongs to the technical field of temperature controllers, and is a two-stage switching steam temperature controller including a base body, a rocker arm and a connection end. Background technique

 The existing steam temperature controller includes a base, a rocker arm, a first electrical connection end, a second electrical connection end, a fixed contact piece disposed on the first electrical connection end, and a second electrical connection end. The movable contact piece which is in elastic contact with the fixed contact piece is provided with a contact on the rocker arm which can touch the movable contact piece to separate it from the fixed contact piece. The rocker arm is disposed on the base body, and the rocker arm is provided with a reset elastic member. The base body is provided with a temperature-sensitive bimetal sheet, and a top piece is provided between the temperature-sensitive bimetal sheet and the rocker arm. During operation, when the head of the rocker arm is pressed, the moving contact piece contacts the fixed contact piece to form a power switch path. The temperature-sensitive bimetal is affected by the temperature of the steam and deforms. When the top piece is touched, the head of the rocker arm is pushed up to push down the tail of the rocker arm. The contact lifts the moving contact piece away from the fixed contact piece. Open the power switch. When the steam temperature controller of this structure is used in an electric kettle for automatic control, it has only one switch state. When the steam thermostat is used in an electric kettle, once the water in the kettle is boiled, the steam thermostat senses the temperature of the steam and acts, turning off the power, and turning off the electric heater in the electric kettle to stop heating. After that, the water in the electric kettle will slowly cool down. To keep the water in the electric kettle at a constant temperature, only by manually pressing the rocker arm again, bringing the moving contact piece into contact with the fixed contact piece again, energizing the electric heater for heating, and then manually The arm is lifted, so that the electric heater is de-energized again, and the cycle is repeated to make the electric heater intermittently energized. This operation is very troublesome to keep the hot water temperature constant in the electric kettle, and it limits the expansion of the function of the electric kettle. Summary of the Invention

 The purpose of the present invention is to provide an electric kettle using a set of temperature sensing devices to realize automatic control of main on-off and manual control of auxiliary on-off, so as to realize two-stage shut-off steam that can perform constant temperature heating control on the kettle body. Temperature control

SB.

Weng.

In order to achieve the purpose of the present invention, the two-stage switch steam temperature controller includes a base body, and a rocker arm disposed on the base body can be tilted, a first electrical connection end, a second electrical connection end, and a first electrical connection. The fixed contact piece on the end is disposed on the second electrical connection end. Under normal circumstances, the movable contact piece is in elastic contact with the fixed contact piece, and the rocker arm is provided with a movable contact. The contact piece with the contact piece separated from the fixed contact piece, a temperature-sensitive bimetal piece provided on the base body, a top piece disposed between the temperature-sensitive bimetal piece and the head of the rocker arm, and a reset spring provided on the rocker arm A third electrical connection end is provided on the base body, an auxiliary fixed contact piece is provided on the third electrical connection end, and an auxiliary movable contact piece spring-pressed on the auxiliary fixed contact piece is provided on the second electrical connection end, and the rocker arm An auxiliary contact piece is provided between the tail end and the auxiliary movable contact piece. When the contact pushes the movable contact piece to separate it from the fixed contact piece for the first stroke, the auxiliary movable contact piece and the auxiliary fixed contact piece remain in contact. When the moving contact piece is pushed beyond the first stage of travel, the auxiliary contact piece will push the auxiliary moving contact piece to separate it from the auxiliary fixed contact piece, and there is a space between the base and the rocker arm which can hold the rocker arm during the first action. Cards.

 Because the third electrical connection end and the auxiliary fixed contact piece are provided on the base body, a clamping member that can hold the rocker arm in the first action is provided between the base body and the rocker arm, so that the rocker arm has two strokes. The segment stroke controls a group of switches, resulting in a set of temperature sensing devices controlling two switches. After the warp arm is depressed, the movable contact piece is in contact with the fixed contact piece, and the auxiliary movable contact piece is in contact with the auxiliary fixed contact piece, so that the second electrical connection end is connected with the first electrical connection end and the third electrical connection end, respectively. When the warp arm is warped by the temperature-sensitive bimetal sheet and touches the top piece, due to the blocking effect of the clip, the tail end of the warp arm can only push the contact piece in the first stroke to make the second electric The connection end is disconnected from the first electrical connection end. Then, the tail end of the rocker arm is pressed down by hand to complete the second stroke of the tail end of the rocker arm, so that the second electrical connection end is disconnected from the third electrical connection end, so as to automatically make the second electrical connection end and the first electrical connection end One electrical connection terminal is disconnected, and the second electrical connection terminal and the third electrical connection terminal are manually disconnected. BRIEF DESCRIPTION OF THE DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS The drawings are illustrated as follows:

 FIG. 1 is a structural diagram of a two-stage switching steam temperature controller according to Embodiment 1 of the present invention.

 FIG. 2 is a cross-sectional view taken along AA in FIG. 1.

 Fig. 3 is a sectional view taken along the line B-B of Fig. 1.

 Fig. 4 is a perspective structural diagram of a two-stage switching steam temperature controller of the present invention.

 FIG. 5 is an internal three-dimensional structural diagram of the first stroke of the embodiment 1 of the present invention after the seat arm is removed to complete the first stroke.

 FIG. 6 is a perspective view of the internal structure of the embodiment 1 with the seat body removed.

 FIG. 7 is a perspective view of the internal structure after the seat is removed according to Embodiment 2 of the present invention.

 FIG. 8 is a perspective structural view of the first embodiment of the present invention without the base body and the rocker arm. detailed description

The specific embodiments of the two-stage switching steam temperature controller of the present invention will be further described in detail below with reference to the accompanying drawings: Example 1

 As shown in FIGS. 1, 2, 3, and 4, the two-stage switching steam temperature controller of the present invention includes a base body 1, a rocker arm 2, a first electrical connection terminal 3, a second electrical connection terminal 4, and a fixed contact piece 5. , Moving contact piece 6, contact 7, temperature-sensitive bimetal piece 13, top piece 14, reset spring piece 15, third electrical connecting terminal 8, auxiliary fixed contact piece 9, auxiliary movable contact piece 10, auxiliary contact piece 11 ， 卡 件 12。 12, the card piece 12.

 The clamping member 12 is an elastic piece provided on the base body 1, and an end portion of the elastic piece is provided with an inclined surface 16 that can contact the tail portion of the rocker arm 2. The auxiliary touch element 11 is movably disposed in the guide through hole 17 on the auxiliary fixed contact piece 9.

 As shown in FIGS. 5, 6 and 8, when the temperature-sensitive bimetal 13 is deformed by heat, the top member 14 is touched to lift the head of the rocker 2, and the tail of the rocker 2 moves downward to the top of the inclined surface 16 of the clip 12. Stop and complete the first trip. At this time, the contact 7 lifts up the movable contact piece 6 to separate it from the fixed contact piece 5, and the first electrical connection terminal 3 disconnects the second electrical connection terminal 4, as shown in FIG. 5. However, the auxiliary movable contact piece 10 is still in contact with the auxiliary fixed contact piece 9. When the pressing is continued, the tail of the rocker arm 2 is pushed through the inclined surface 16 to avoid the clamping member 12 until the second stroke is completed, and the auxiliary movable contact piece 10 will be pushed up by the ejector rod sliding in the guide through hole 17 so that It is separated from the auxiliary fixed contact piece 9, and the second electrical connection terminal 4 is disconnected from the third electrical connection terminal 8.

 Example 2

 As shown in FIG. 7, it is different from Embodiment 1 in that the auxiliary contact member 11 is an auxiliary contact provided at the tail of the rocker arm 2, and the auxiliary contact is provided at an end of the contact 7. The tail of the rocker arm 2 moves down to the inclined surface 16 of the clip 12 and stops. When the first stroke is completed, only the contact 7 can lift the movable contact piece 6 to separate it from the fixed contact piece 5. Only when entering the second stroke, the auxiliary contact continues to move forward, so that the auxiliary movable contact piece 10 and the auxiliary fixed contact piece 9 are separated.

Claims

Rights request 1. A two-stage switching steam temperature controller, comprising a base body (1), a rocker arm (2) provided on the base body (1) which can be tilted, a first electrical connection end (3), and a second electrical connection end (4) ), A fixed contact piece (5) provided on the first electrical connection end (3), a moving contact piece (5) provided on the second electrical connection end (4), and normally in spring contact with the fixed contact piece (5) 6), the rocker arm (2) is provided with a contact (7) that can touch the moving contact piece (6) to separate it from the fixed contact piece (5), and a temperature-sensitive bimetal piece (1) provided on the base body (1) 13), a top piece (14) provided between the temperature-sensitive bimetal sheet (13) and the head of the rocker arm (2), and a reset elastic member (15) provided on the rocker arm (2), which is characterized by being seated A third electrical connection end (8) is provided on the body (1), an auxiliary fixed contact piece (9) is provided on the third electrical connection end (8), and a spring pressing is provided on the second electrical connection end (4). The auxiliary moving contact piece (10) on the auxiliary fixed contact piece (9), the auxiliary contact piece (11) is arranged between the tail end of the rocker arm (2) and the auxiliary moving contact piece (10), and is pushed by the contact (7) Move the contact piece (6) with the fixed contact piece (5) When the first stage of travel is separated, the auxiliary moving contact (10) and the auxiliary fixed contact (9) remain in contact. When the contact (7) pushes the moving contact (6) beyond the first stage of travel, the auxiliary touch The piece (11) will push the auxiliary moving contact piece (10) to separate it from the auxiliary fixed contact piece (9), and a lock arm (2) is provided between the base body (1) and the rocker arm (2). Clip (12) for one action.  2. The two-stage switching steam temperature controller according to claim 1, characterized in that the clamping member (12) is an elastic piece provided on the base body (1), and an end of the elastic piece is provided with a rocker arm ( 2) Bevel (16) with tail contact.  3. The two-stage switching steam temperature controller according to claim 1 or 2, characterized in that the auxiliary contact piece (11) is a guide through hole (17) movably disposed on the auxiliary fixed contact piece (9). The ejector in the.  4. The two-stage switching steam temperature controller according to claim 1 or 2, characterized in that the auxiliary contact member (11) is an auxiliary contact provided at the tail of the rocker arm (2).