CN212485217U - Kick type temperature controller with auxiliary disc - Google Patents

Abstract

A kick type temperature controller with an auxiliary disc belongs to the technical field of temperature controllers and comprises a shell, a pressure plate, an end cover, a bimetallic strip, a push rod, a contact mechanism, a bracket, a left external wiring board, a right external wiring board and an auxiliary disc. The contact mechanism comprises a movable contact and a fixed contact; the auxiliary disc is a single metal sheet and can be bent under the action of external force; the auxiliary disc is arranged between the bimetallic strip and the push rod; the auxiliary disc is round, the size of the auxiliary disc is matched with that of the bimetallic strip, and 3-6 round holes are uniformly formed in the auxiliary disc, so that the auxiliary disc is easy to deform; after the movable contact and the fixed contact are separated, the distance between the contacts is a disconnection distance; the disconnection distance between the contacts is 0.05-2 mm; the contact mechanism is of a single-contact elastic sheet structure or a double-contact independent spring structure, and is arranged in the shell and below the bimetallic strip. The utility model has the advantages that: the contact distance is long and the service life is long.

Description

Kick type temperature controller with auxiliary disc

Technical Field

The utility model relates to a temperature controller, in particular to take kick formula temperature controller of supplementary video disc belongs to temperature controller technical field.

Background

Mechanical type temperature controller generally all adopts bimetallic strip expend with heat and contract with cold's principle preparation, the mechanical type temperature controller of this kind of structure, bimetallic strip begins the temperature sensing after the high temperature that bimetallic strip received reachs a definite value, when the temperature rose to a certain extent (when overtemperature), bimetallic strip produced deformation and protrusion downwards, thereby drive insulating executive lever and move down, this insulating executive lever then promotes the movable contact spring downwards, make movable contact spring and the separation of first contact piece on the second contact piece, thereby first contact piece and second contact piece do not switch on, no longer heat. When the temperature drops to a certain degree, the bimetallic strip resets to drive the insulating execution rod to move upwards, the movable reed resets upwards, the second contact piece and the first contact piece are conducted again, and the heating circuit continues to work. In the era of automation popularization, more and more intelligent products are accepted by people, such as intelligent household appliances in daily life and new energy automobiles, which all need to use a temperature control automatic switch, wherein the most common products of the temperature control automatic switch are as follows: the bimetallic strip kick type temperature controllers account for the majority.

Grant notice No. CN 207624623U, the name is "a sudden jump formula temperature controller" the utility model discloses a utility model patent of sudden jump formula temperature controller, including the drain pan, the drain pan upper end is provided with the backup pad, and the backup pad upper end is provided with the aluminium lid, is provided with dish bimetallic strip between aluminium lid and the backup pad, and dish bimetallic strip lower extreme is connected with the push rod, and the push rod lower extreme is provided with the touch piece, and the touch piece left end is provided with the contact, and the contact upper end is provided with the static contact, and the touch piece all passes through hollow rivet with the static contact to be fixed on the drain pan. But receive the unsmooth degree of core part bimetallic strip deformation limitation influence, the bimetallic strip promotes that the push rod opens the reed simultaneously and the contact distance is limited, leads to the contact to open the interval very short, appears the temperature controller during operation at the condition that the power supply in-process pulled electric arc easily for the life-span of temperature controller product is short. And at present, no temperature controller in the market has a product with a small temperature difference between opening and closing, because the distance of the deformation of the concave-convex surface of the bimetallic strip is not enough to push the push rod to break the contact, the product cannot normally work.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a take kick formula temperature controller of supplementary video disc to among the above-mentioned prior art, the limited defect of contact distance, can reach the long, longe-lived purpose of contact distance.

In order to realize the purpose, the utility model adopts the technical scheme that: the kick type temperature controller with an auxiliary disc comprises a shell, a temperature sensitive element, a circuit breaking element and an action transmission part; the method is characterized in that: the disc type disc also comprises an auxiliary disc, wherein the auxiliary disc is disc-shaped and sheet-shaped; the middle part is in a cantilever shape; has a kick characteristic; the size of the shape is close to that of the temperature sensitive element; the thickness is smaller than that of the temperature sensitive element; the auxiliary disc is positioned between the temperature sensitive element and the motion transmission part.

The temperature sensitive element can generate sudden jump when the temperature reaches a specific value, and generates certain deformation and thrust; the circuit breaking element is provided with a breaking interface composed of silver-based alloy, and the breaking interface has pre-pressure after being closed; the action transmission part transmits the thermal deformation force of the temperature sensitive element to the circuit breaking part to open or close the breaking interface; and in the circuit breaking process, the temperature sensitive element pushes the auxiliary disc to jump, and the auxiliary disc pushes the action transmission part to open the breaking interface. In the closing process of the circuit, after the deformation of the temperature sensitive element is recovered, the auxiliary disc generates snap deformation under the action of the pre-pressure of a breaking interface, and the initial state is recovered.

The device is characterized by also comprising a pressure plate, an end cover, a bracket, a left external connection board and a right external connection board, wherein the shell, the pressure plate and the end cover are circular; the pressure plate is arranged at the upper part of the inner cavity of the shell, the end cover is arranged above the pressure plate, the left external connection board is fixedly arranged at the left side of the bottom of the shell, the right external connection board is fixedly arranged at the right side of the bottom of the shell, and the support is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way; the temperature sensitive element is a bimetallic strip, and the bimetallic strip is circular; the bimetallic strip is arranged between the end cover and the pressure plate; 2-8 round holes are uniformly formed in the auxiliary disc, so that the auxiliary disc is easy to deform; the auxiliary disc is made of a single-layer metal material; the circuit breaking element is a contact mechanism which is a single-contact elastic sheet structure or a double-contact independent spring structure, and the contact mechanism is arranged in the shell and below the bimetallic strip.

The auxiliary disc is evenly provided with 4 round holes.

The contact mechanism is a single-contact spring structure: the contact mechanism is a single-contact spring structure: the action transmission part comprises a push rod and an elastic sheet; the single-contact elastic sheet structure comprises a movable contact, a static contact, a left rivet, a right rivet, a left wiring terminal and a right wiring terminal; 1 movable contact is arranged; the elastic sheet is arranged below the push rod; the movable contact is arranged on the right side of the elastic sheet, the static contact is arranged above the movable contact, and the static contact is arranged on the static contact and right above the movable contact, so that the static contact is opposite to the movable contact up and down; the bracket is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way;

the elastic sheet is fixedly connected with the right external wiring board through a right rivet, and the static contact sheet is fixedly connected with the left external wiring board through a left rivet; the upper end of the left wiring terminal is electrically connected with the left external wiring board, the upper end of the right wiring terminal is electrically connected with the right external wiring board, and the lower ends of the left wiring terminal and the right wiring terminal are used for connecting the switch into the circuit.

In the deformation process, the force value relationship among the bimetallic strip force F1, the auxiliary disc force F2, the spring plate force F3, F1, F2 and F3 is as follows: f1> F2+ F3, F2< F3.

The temperature controller adopts automatic control, when the ambient temperature reaches 150 ℃, the bimetallic strip is heated to deform and jump downwards, the auxiliary disc is extruded to deform and displace downwards to push the push rod, the push rod pushes the elastic sheet or the movable contact sheet downwards, and the contact separation distance is generated between the movable contact and the static contact, so that the switch is turned off and the current is cut off; after the current is cut off, when the ambient temperature is reduced to 120 ℃, the bimetallic strip is restored, the push rod and the elastic sheet are upward, and the movable contact is in contact with the static contact for electrification;

the contact mechanism is of a double-contact independent spring structure, and the action transmission part comprises a push rod; the double-contact independent spring structure comprises a movable contact piece, a movable contact, a static contact piece and an independent spring; the number of the movable contacts is 2, and the movable contacts are arranged on two sides of the movable contact piece, namely a left movable contact and a right movable contact; the static contact comprises a left static contact and a right static contact;

the movable contact piece is provided with a central hole, the push rod and the movable contact piece are longitudinally arranged, and the middle part of the push rod is arranged in the central hole in a penetrating manner; the independent spring is sleeved at the lower part of the push rod, and the upper end of the independent spring is connected with the lower bottom surface of the movable contact piece; the movable contact piece is arranged in the main cavity body, the periphery of the movable contact piece is in clearance fit with the inner wall of the main cavity body, and the inner wall of the main cavity body plays a role in positioning the movable contact piece;

the left static contact and the left external wiring board are of an integrated structure, and the right static contact and the right external wiring board are of an integrated structure.

The auxiliary disc is suitable for any one of the kick type temperature controllers.

After the movable contact and the fixed contact are separated, a disconnection distance between the contacts is formed between the movable contact and the fixed contact; the disconnection distance between the contacts is 0.05-3 mm.

Compared with the prior art, the beneficial effects of the utility model are that: an auxiliary disc which has no special temperature effect and has material characteristics is designed and added on the original structure, and the deformation of the auxiliary disc is driven by the deformation kick of the bimetallic strip with the temperature characteristic; this design increases the distance that the push rod backed down the contact in the distance of former bimetallic strip deformation in traditional structure, plays the electric arc that produces when reducing the outage between the contact, improves the life of temperature controller, can satisfy the requirement that the difference in temperature is little simultaneously, has filled current market blank.

Drawings

FIG. 1 is a schematic diagram of: the utility model discloses a front view;

FIG. 2 is a diagram of: the utility model discloses a top view;

FIG. 3 is a diagram of: the utility model discloses a left view;

FIG. 4 is a diagram of: the utility model is a three-dimensional view;

FIG. 5 is a diagram of: the utility model discloses a front view cross section;

FIG. 6 is a diagram of: the assembly diagram of the bimetallic strip, the auxiliary disc, the push rod, the spring plate and the static contact plate (the contact state of the movable contact and the static contact);

FIG. 7 is a diagram of: the assembly diagram of the bimetallic strip, the auxiliary disc, the push rod, the elastic sheet and the static contact sheet (the disconnection state of the movable contact and the static contact);

FIG. 8 is a diagram of: auxiliary disc front view;

FIG. 9 is a schematic diagram of: top view of the auxiliary disc;

FIG. 10 is a schematic diagram of: a perspective view of the auxiliary disc;

FIG. 11 is a graph of: the elastic sheet, the static contact sheet, the left external wiring board, the right external wiring board, the left rivet, the right rivet, the left wiring terminal and the right wiring terminal are assembled into a front view;

FIG. 12 is a diagram of: the elastic sheet, the static contact sheet, the left external wiring board, the right external wiring board, the left rivet, the right rivet, the left wiring terminal and the right wiring terminal are assembled to form a top view;

FIG. 13 is a graph of: the elastic sheet, the static contact sheet, the left external wiring board, the right external wiring board, the left rivet, the right rivet, the left wiring terminal and the right wiring terminal are assembled into a left view;

FIG. 14 is a graph of: the elastic sheet, the static contact sheet, the left external wiring board, the right external wiring board, the left rivet, the right rivet, the left wiring terminal and the right wiring terminal are assembled into a three-dimensional view;

FIG. 15 is a diagram of: the structure of example 2 is schematically shown;

FIG. 16 is a graph of: the movable contact, the static contact, the left external connection board and the right external connection board of the embodiment 2 are assembled in a perspective view.

Description of reference numerals: the device comprises a shell 1, a pressure plate 2, an end cover 3, a bimetallic strip 4, a push rod 5, an elastic sheet 6, a movable contact 7, a fixed contact 8, a fixed contact 9, a support 10, an auxiliary disc 11, a round hole 1101, a left external connection board 12, a right external connection board 13, a left rivet 14, a right rivet 15, a left wiring terminal 16, a right wiring terminal 17, a movable contact 18 and an independent spring 19.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the present invention.

Example 1:

as shown in fig. 1 to 14, the kick type temperature controller with an auxiliary disk, as shown in fig. 1 to 5, includes a housing 1, a pressure plate 2, an end cap 3, a bimetallic strip 4, a push rod 5, a contact mechanism, a bracket 10, a left external connection board 12, and a right external connection board 13, wherein the housing 1, the pressure plate 2, the end cap 3, and the bimetallic strip 4 are circular; the pressure plate 2 is arranged at the upper end of the shell 1, the end cover 3 is arranged above the pressure plate 2, and the bimetallic strip 4 is arranged between the end cover 3 and the pressure plate 2; the left external wiring board 12 is fixedly arranged on the left side of the bottom of the shell 1, the right external wiring board 13 is fixedly arranged on the right side of the bottom of the shell 1, and the support 10 is sleeved on the upper part of the shell 1 and below the end cover 3 in a clamping and embedding manner; the two metals of the bimetallic strip 4 have different expansion coefficients and have the temperature characteristic of bending downwards when the temperature changes;

as shown in fig. 6 to 10, the device further includes an auxiliary disc 11, wherein the auxiliary disc 11 is a single metal sheet and can be bent under an external force; the auxiliary disc 11 is arranged between the bimetallic strip 4 and the push rod 5; the auxiliary disc 11 is circular, the size of the auxiliary disc is matched with that of the bimetallic strip 4, and 4 round holes 1101 are uniformly formed in the auxiliary disc 11, so that the auxiliary disc 11 is easy to deform; the distance H between the contacts between the movable contact 7 and the fixed contact 9 is 0.8 mm;

the breaking distance H between the contacts is different for different products; as shown in fig. 7, after the auxiliary disc 11 is added, when the moving contact 7 is disconnected from the stationary contact 9, the disconnection distance H between the contacts is increased from 0.5mm to 0.8 mm.

The contact mechanism is of a single-contact spring structure and is arranged in the shell and below the bimetallic strip.

The single-contact spring structure comprises a spring 6, a movable contact 7, a static contact 8, a static contact 9, a left rivet 14, a right rivet 15, a left wiring terminal 16 and a right wiring terminal 17; as shown in fig. 11 to 14, the left external connection board 12 is fixedly arranged at the left side of the bottom of the housing 1, and the right external connection board 13 is fixedly arranged at the right side of the bottom of the housing 1; the elastic sheet 6 is fixedly connected with the right external connection board 13 through a right rivet 15, and the static contact sheet 8 is fixedly connected with the left external connection board 12 through a left rivet 14; the upper end of the left wiring terminal 16 is electrically connected with the left external wiring board 12, the upper end of the right wiring terminal 17 is electrically connected with the right external wiring board 13, and the lower ends of the left wiring terminal 16 and the right wiring terminal 17 are used for connecting a switch into a circuit.

When the environmental temperature changes, the environmental temperature transmits the changed temperature to the bimetallic strip 4 through the end cover 3, the bimetallic strip 4 senses the temperature, is deformed by heating and jumps downwards, extrudes the auxiliary disc 11 to deform downwards to move into S, pushes the push rod 5 through the deformation of the auxiliary disc 11, leads the push rod 5 to push the elastic sheet 6 to move downwards, disconnects the movable contact 7 at the left end of the elastic sheet 6 from the fixed contact 9, generates a disconnection distance between contacts, switches off the switch, and cuts off the current;

because the structure of the auxiliary disc 11 is added, the deformation generated when the bimetallic strip 4 jumps drives the auxiliary disc 11 to deform, the contact disconnection distance H is increased, the use times of the sudden-jump type temperature controller with the bimetallic strip 4 are improved, the service life of the product is prolonged, and the requirement of small temperature difference can be met.

As shown in fig. 7, the utility model adopts automatic control, when the ambient temperature reaches 150 ℃, the bimetallic strip 4 is heated to deform and jump downwards, the auxiliary disk 11 is extruded to deform and displace downwards to push the push rod 5, the push rod 5 pushes the spring strip 6 downwards, and a contact disconnection distance H is generated between the movable contact 7 and the stationary contact 9, so that the switch is turned off and the current is cut off; after the current is cut off, when the ambient temperature is reduced to 120 ℃, the bimetallic strip 4 is restored, the push rod 5 and the elastic sheet 6 are upward, and the movable contact 7 is contacted with the fixed contact 9 for electrifying.

As shown in fig. 7, in the deformation process, the force value relationship between the bimetal 4 and the spring 6 is F1, the force value between the auxiliary disc 11 and the spring 6 is F2, F3, F1, F2 and F3: f1> F2+ F3, F2< F3.

The working principle of the single-contact elastic sheet structure is as follows: the utility model comprises a normally closed structure and a normally open structure, wherein the normally closed structure senses temperature through the bimetallic strip 4, jumps after deformation is recovered, releases the push rod 5 upwards through the auxiliary disc 11, pushes the movable contact 7 to close through the elastic sheet 6, and switches on the breakpoint to conduct current; the normally open structure senses temperature through the bimetallic strip 4, generates deformation and then jumps suddenly, pushes the push rod 5 downwards through the auxiliary disc 11, and the push rod 5 drives the movable contact 7 to jack downwards, so that the contact is disconnected and the current is cut off.

Example 2:

as shown in fig. 15 and the carcass 16, the contact mechanism is a double-contact independent spring structure which comprises a movable contact piece 18, a movable contact 7, a fixed contact piece 8, a fixed contact 9 and an independent spring 19; the number of the movable contacts 7 is 2, and the movable contacts are arranged on two sides of the movable contact piece 18, namely a left movable contact and a right movable contact; the static contact 8 comprises a left static contact and a right static contact;

the movable contact piece 18 is provided with a central hole, the push rod 5 and the movable contact piece 18 are longitudinally arranged, and the middle part of the push rod 5 is arranged in the central hole in a penetrating way; the independent spring 19 is sleeved at the lower part of the push rod 5, and the upper end of the independent spring 19 is connected with the lower bottom surface of the movable contact spring 18; the movable contact piece 18 is arranged in the main cavity body, the periphery of the movable contact piece 18 is in clearance fit with the inner wall of the main cavity body, and the inner wall of the main cavity body plays a role in positioning the movable contact piece 18;

the left static contact and the left external wiring board 12 are of an integrated structure, and the right static contact and the right external wiring board 13 are of an integrated structure.

The working principle of the double-contact independent spring structure is as follows: the utility model comprises a normally closed structure and a normally open structure, wherein the normally closed structure senses temperature through the bimetallic strip 4, recovers the sudden jump after deformation, releases the push rod 5 upwards through the auxiliary disc 11, pushes the movable contact strip 18 to close through the independent spring 19, and simultaneously switches on the double break contacts (the movable contact 7 and the static contact 9) to conduct current; the normally open structure senses temperature through the bimetallic strip 4, generates deformation and then jumps suddenly, pushes the push rod 5 downwards through the auxiliary disc 11, the push rod 5 drives the movable contact piece 18 to jack downwards, and double break contacts (the movable contact 7 and the static contact 9) are simultaneously disconnected to cut off current.

The same as in example 1.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the ordinary changes and replacements within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims (7)

1. The kick type temperature controller with an auxiliary disc comprises a shell, a temperature sensitive element, a circuit breaking element and an action transmission part; the method is characterized in that: the disc type disc also comprises an auxiliary disc, wherein the auxiliary disc is disc-shaped and sheet-shaped; the middle part is in a cantilever shape; has a kick characteristic; the size of the shape is close to that of the temperature sensitive element; the thickness is smaller than that of the temperature sensitive element; the auxiliary disc is positioned between the temperature sensitive element and the motion transmission part.

2. The snap-action thermostat with an auxiliary disk according to claim 1, characterized in that: the device is characterized by also comprising a pressure plate, an end cover, a bracket, a left external connection board and a right external connection board, wherein the shell, the pressure plate and the end cover are circular; the pressure plate is arranged at the upper part of the inner cavity of the shell, the end cover is arranged above the pressure plate, the left external connection board is fixedly arranged at the left side of the bottom of the shell, the right external connection board is fixedly arranged at the right side of the bottom of the shell, and the support is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way; the temperature sensitive element is a bimetallic strip, and the bimetallic strip is circular; the bimetallic strip is arranged between the end cover and the pressure plate; 2-8 round holes are uniformly formed in the auxiliary disc, so that the auxiliary disc is easy to deform; the auxiliary disc is made of a single-layer metal material; the circuit breaking element is a contact mechanism which is a single-contact elastic sheet structure or a double-contact independent spring structure, and the contact mechanism is arranged in the shell and below the bimetallic strip.

3. The snap-action thermostat with an auxiliary disk according to claim 2, characterized in that: the auxiliary disc is evenly provided with 4 round holes.

4. The snap-action thermostat with an auxiliary disk according to claim 2, characterized in that: the contact mechanism is a single-contact spring structure: the action transmission part comprises a push rod and an elastic sheet; the single-contact elastic sheet structure comprises a movable contact, a static contact, a left rivet, a right rivet, a left wiring terminal and a right wiring terminal; 1 movable contact is arranged; the elastic sheet is arranged below the push rod; the movable contact is arranged on the right side of the elastic sheet, the static contact is arranged above the movable contact, and the static contact is arranged on the static contact and right above the movable contact, so that the static contact is opposite to the movable contact up and down; the bracket is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way;

the elastic sheet is fixedly connected with the right conductive plate through a right rivet, and the static contact sheet is fixedly connected with the left conductive plate through a left rivet; the upper end of the left wiring terminal is electrically connected with the left external wiring board, the upper end of the right wiring terminal is electrically connected with the right external wiring board, and the lower ends of the left wiring terminal and the right wiring terminal are used for connecting the switch into the circuit.

5. The snap-action thermostat with an auxiliary disk according to claim 4, wherein: in the deformation process, the force value relationship among the bimetallic strip force F1, the auxiliary disc force F2, the spring plate force F3, F1, F2 and F3 is as follows: f1> F2+ F3, F2< F3.

6. The snap-action thermostat with an auxiliary disk according to claim 2, characterized in that: the contact mechanism is of a double-contact independent spring structure, and the action transmission part comprises a push rod; the double-contact independent spring structure comprises a movable contact piece, a movable contact, a static contact piece, a static contact and an independent spring; the number of the movable contacts is 2, and the movable contacts are arranged on two sides of the movable contact piece, namely a left movable contact and a right movable contact; the static contact comprises a left static contact and a right static contact;

the movable contact piece is provided with a central hole, the push rod and the movable contact piece are longitudinally arranged, and the middle part of the push rod is arranged in the central hole in a penetrating manner; the independent spring is sleeved at the lower part of the push rod, and the upper end of the independent spring is connected with the lower bottom surface of the movable contact piece; the movable contact piece is arranged in the main cavity body, the periphery of the movable contact piece is in clearance fit with the inner wall of the main cavity body, and the inner wall of the main cavity body plays a role in positioning the movable contact piece;

the left static contact and the left external wiring board are of an integrated structure, and the right static contact and the right external wiring board are of an integrated structure.

7. The snap-action thermostat with auxiliary disk according to claim 4 or 6, characterized in that: after the movable contact and the fixed contact are separated, a disconnection distance between the contacts is formed between the movable contact and the fixed contact; the disconnection distance between the contacts is 0.05-3 mm.

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