CN212209344U - Quick response small-size large-current temperature controller - Google Patents
Quick response small-size large-current temperature controller Download PDFInfo
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- CN212209344U CN212209344U CN202021205738.9U CN202021205738U CN212209344U CN 212209344 U CN212209344 U CN 212209344U CN 202021205738 U CN202021205738 U CN 202021205738U CN 212209344 U CN212209344 U CN 212209344U
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Abstract
A fast response small volume heavy current temperature controller belongs to the technical field of temperature controllers and comprises a shell, a base, a pressure plate, an end cover, a bimetallic strip, a push rod, a movable contact, a static contact, a rivet, an external wiring board and a bracket; two movable contacts are arranged on two sides of the movable contact piece, the movable contacts comprise a left movable contact and a right movable contact, namely double break contacts, the static contact comprises a left static contact and a right static contact, the rivet comprises a left rivet and a right rivet, and the external connection board comprises a left external connection board and a right external connection board; the left static contact and the left external connection board are fixedly connected with the bottom of the shell through a left rivet, and the right static contact and the right external connection board are fixedly connected with the bottom of the shell through a right rivet; the left movable contact is arranged below the left static contact piece, the left movable contact is opposite to the left static contact piece up and down, the right movable contact is arranged below the right static contact piece, and the right movable contact is opposite to the right static contact piece up and down; the temperature controller is divided into a manual type and an automatic type. The utility model has the advantages that: can bear large current, and has small volume and long service life.
Description
Technical Field
The utility model relates to a temperature controller, in particular to quick response little volume heavy current temperature controller belongs to temperature controller technical field.
Background
The temperature controller has the function of temperature sensing power-off protection, and is a particularly important safety product in the electrical industry. The current bearing capacity is one of the important indexes for measuring the performance of the temperature controller. In the traditional spring plate structure of the small-volume temperature controller, the spring plate needs to have elasticity and overcurrent, so that the requirement of overlarge current in a small space cannot be met; when the current borne by a small-volume temperature controller on the market is too large, the temperature rise is too high, the service life is shortened, and the requirement of a large-current working condition cannot be met, but a general large-current temperature controller has a large volume and a complex internal structure, needs a large bimetallic strip, so that the response time of temperature sensing is generally long, and the protection of some special working conditions cannot be met, such as a dry burning experiment; in addition, the existing large-current temperature controller has a complex structure, so that the large-current temperature controller is large in size, difficult to apply to occasions with small requirements on size, and high in general cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a to among the above-mentioned prior art, can't bear heavy current, bulky defect, provide a small volume heavy current temperature controller of quick response, can reach and can bear heavy current, small, longe-lived purpose.
In order to realize the purpose, the utility model adopts the technical scheme that: a quick response small-volume large-current temperature controller, called a large-current temperature controller for short, comprises a shell, a base, a pressure plate, an end cover, a bimetallic strip, a push rod, a movable contact strip, a movable contact, a static contact strip, a rivet, an external connection plate and a support, wherein the pressure plate is arranged at the upper end of the shell, the end cover is arranged above the pressure plate, the bimetallic strip is arranged between the end cover and the pressure plate, the push rod is longitudinally arranged, the upper end of the push rod is positioned below the middle part of the bimetallic strip, and the middle part of the push rod is penetrated in a central hole in the middle part; the movable contact piece is arranged below the push rod; the bracket is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way; the expansion coefficients of the two metals of the bimetallic strip are different, and the bimetallic strip has the temperature characteristic of bending downwards when the temperature changes;
two movable contacts are arranged on two sides of the movable contact piece, each movable contact comprises a left movable contact and a right movable contact, namely double break contacts, each static contact comprises a left static contact and a right static contact, each rivet comprises a left rivet and a right rivet, and each external connection board comprises a left external connection board and a right external connection board; the left static contact and the left external connection board are fixedly connected with the bottom of the shell through a left rivet, and the right static contact and the right external connection board are fixedly connected with the bottom of the shell through a right rivet; the left movable contact is arranged below the left static contact piece, the left movable contact is opposite to the left static contact piece up and down, the right movable contact is arranged below the right static contact piece, and the right movable contact is opposite to the right static contact piece up and down;
the heavy-current temperature controller also comprises a reset rod and an independent spring, wherein the reset rod is longitudinally arranged below the movable contact piece and vertically corresponds to the push rod above the movable contact piece, an annular convex ring is arranged between the middle part and the upper part of the reset rod, and the middle part of the reset rod is arranged in a central hole at the bottom of the shell in a penetrating manner and can move up and down in the vertical direction; an annular step A and an annular step B are arranged in the inner cavity of the shell from bottom to top, and the diameter of the annular step B is larger than that of the annular step A;
the independent spring is sleeved on the reset rod, the upper end of the independent spring is connected with the lower bottom surface of the movable contact spring, and the lower end of the independent spring is abutted against the annular step B; 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 reset button is arranged at the lower end of the reset rod;
the quick response small-volume large-current temperature controller is divided into a manual type and an automatic type.
Is a large-current temperature controller with quick response and small volume 25A.
The left movable contact, the right movable contact and the static contact are all made of composite laminated boards, the composite laminated board body is made of copper, and the contact part of the composite laminated boards is made of silver alloy; the left movable contact, the right movable contact and the static contact which are made of the composite laminated board have better arc resistance and overcurrent capacity, the electrical performance is improved, the manufacturing cost is relatively low, the service life is prolonged, and the production economic benefit is improved.
The left side external wiring board left end is provided with left terminal connection hole, right side external wiring board right-hand member is provided with right terminal connection hole, left side terminal connection hole and right terminal connection hole are threaded connection hole, and the contact is reliable, connects conveniently.
The manual high-current temperature controller senses temperature through the bimetallic strip, the push rod is pushed downwards by sudden jump after deformation is generated, the push rod pushes the movable contact piece open, the double break contacts are simultaneously disconnected, current is cut off, the independent spring is compressed at the moment, and the annular convex ring of the reset rod falls on the annular step A; when recovery is needed, the reset button is used.
The automatic high-current temperature controller senses temperature through the bimetallic strip, the push rod is pushed downwards by sudden jump after deformation, the push rod pushes the movable contact piece to open, the double break contacts are simultaneously disconnected, current is cut off, the independent spring is compressed at the moment, the annular convex ring of the reset rod is fallen on the annular step A, and the annular convex ring plays a role in limiting the up-and-down movement of the reset rod; when the temperature is reduced to the required temperature, the bimetallic strip automatically restores the original state, the movable contact spring restores the original position, the double break contacts are simultaneously connected, and the current is restored.
The device also comprises an auxiliary disc, wherein the auxiliary disc is a single metal sheet and is positioned below the bimetallic strip and above the upper end of the push rod.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the design adopts a non-elastic sheet design, and the traditional elastic sheet structure cannot meet the requirement of overlarge current in a small space because the elastic sheet needs elasticity and overcurrent, and the novel design separates the overcurrent and elasticity requirements of the elastic sheet, provides elasticity by an independent overcurrent-free spring, can meet the requirement of overlarge current and quick response of a movable contact, and effectively solves the contradiction;
2) the novel product effectively utilizes the internal space of the existing small temperature control through reasonable structural layout and design, and skillfully realizes the same overall dimension and temperature response time as the small temperature control while realizing large temperature control over-current capability; meanwhile, double-break contact breaking is adopted, so that the breaking capacity is effectively improved, the requirements on temperature rise and product service life under the working condition of high current of 25A are met, and the current market blank is filled;
3) the manufacturing cost of the existing large-current temperature controller is effectively reduced, and the large-current temperature controller has the multiple advantages of simple and reliable structure, superior performance and low cost, and meets the corresponding requirements of customers.
Drawings
FIG. 1 is a schematic diagram of: the utility model discloses a front view;
FIG. 2 is a diagram of: the utility model is a right view;
FIG. 3 is a diagram of: the utility model discloses a top view;
FIG. 4 is a diagram of: the utility model discloses a bottom view;
FIG. 5 is a diagram of: the utility model is a three-dimensional view;
FIG. 6 is a diagram of: the utility model discloses an internal structure front view;
FIG. 7 is a diagram of: the utility model has a right view of the internal structure;
FIG. 8 is a diagram of: the utility model discloses the front view of the conductive part;
FIG. 9 is a schematic diagram of: the utility model discloses the right view of the conductive component;
FIG. 10 is a schematic diagram of: the utility model discloses a top view of a conductive part;
FIG. 11 is a graph of: the utility model is a bottom view of the conductive component;
FIG. 12 is a diagram of: the utility model has a three-dimensional view of the conductive component;
FIG. 13 is a graph of: example 3 is a schematic illustration.
Description of reference numerals: the automatic reset device comprises a shell 1, an end cover 2, a bimetallic strip 3, a push rod 4, a movable contact 5, a static contact 6, a left static contact 601, a right static contact 602, a movable contact 7, a left movable contact 701, a right movable contact 702, an external connection board 8, a left external connection board 801, a right external connection board 802, a bracket 9, a pressure plate 10, a reset rod 11, an annular step A12, a rivet 13, a left rivet 1301, a right rivet 1302, a base 14, an independent spring 15, an annular step B16, a reset button 17 and an auxiliary disc 18.
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 12, a fast response small-volume large-current temperature controller, referred to as a large-current temperature controller for short, as shown in fig. 1 to 7, includes a housing 1, a base 14, a pressure plate 10, an end cover 2, a bimetallic strip 3, a push rod 4, a movable contact 5, a movable contact 7, a stationary contact 6, a rivet 13, an external connection board 8 and a bracket 9, wherein the pressure plate 10 is arranged at the upper end of the housing 1, the end cover 2 is arranged above the pressure plate 10, the bimetallic strip 3 is arranged between the end cover 2 and the pressure plate 10, the push rod 4 is longitudinally arranged, the upper end of the push rod 4 is located below the middle part of the bimetallic strip 3, and the middle part of the push rod 4 is inserted into a central hole at the middle; the movable contact piece 5 is arranged below the push rod 4; the bracket 9 is sleeved on the upper part of the shell 1 and below the end cover 2 in a clamping and embedding way; the two metals of the bimetallic strip 3 have different expansion coefficients and have the temperature characteristic of bending downwards when the temperature changes;
as shown in fig. 6 to 12, two movable contacts 7 are disposed on two sides of the movable contact 5, the movable contact 7 includes a left movable contact 701 and a right movable contact 702, that is, a double break contact, the fixed contact 6 includes a left fixed contact 601 and a right fixed contact 602, the rivet 13 includes a left rivet 1301 and a right rivet 1302, and the external connection board 8 includes a left external connection board 801 and a right external connection board 802; the left static contact plate 601 and the left external connection board 801 are fixedly connected with the bottom of the shell 1 through a left rivet 1301, and the right static contact plate 602 and the right external connection board 802 are fixedly connected with the bottom of the shell 1 through a right rivet 1302; the left movable contact 701 is arranged below the left static contact 601, the left movable contact 701 is vertically opposite to the left static contact 601, the right movable contact 702 is arranged below the right static contact 602, and the right movable contact 702 is vertically opposite to the right static contact 602;
the heavy-current temperature controller also comprises a reset rod 11 and an independent spring 15, wherein the reset rod 11 is longitudinally arranged below the movable contact piece 5 and vertically corresponds to the push rod 4 above the movable contact piece 5, an annular convex ring is arranged between the middle part and the upper part of the reset rod 11, and the middle part of the reset rod 11 is arranged in a central hole at the bottom of the shell 1 in a penetrating manner and can move up and down in the vertical direction; an annular step A12 and an annular step B16 are arranged in the inner cavity of the shell 1 from bottom to top, and the diameter of the annular step B16 is larger than that of the annular step A12;
the independent spring 15 is sleeved on the reset rod 11, the upper end of the independent spring 15 is connected with the lower bottom surface of the movable contact spring 5, and the lower end of the independent spring 15 is abutted against the annular step B16; the movable contact piece 5 is arranged in the main cavity body, the periphery of the movable contact piece 5 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 5;
as shown in fig. 6 to 12, the reset button 17 is further included, and the reset button 17 is arranged at the lower end of the reset rod 11;
the quick-response small-volume large-current temperature controller is of a manual type.
As shown in fig. 1 to 5, a fast response small volume 25A large current temperature controller, referred to as 25A large current temperature controller for short.
As shown in fig. 6 and 7, the left moving contact 701, the right moving contact 702 and the static contact 6 are all made of composite laminated boards, the composite laminated board body is made of copper, and the contact part of the composite laminated board is made of silver alloy; the left movable contact 701, the right movable contact 702 and the static contact 6 which are made of the composite laminated board have better arc resistance and overcurrent capacity, the electrical performance is improved, the manufacturing cost is relatively low, the service life is prolonged, and the production economic benefit is improved.
The left side external connection board 801 left end is provided with left terminal connection hole, right side external connection board 802 right-hand member is provided with right terminal connection hole, left side terminal connection hole and right terminal connection hole are threaded connection hole, and the contact is reliable, and it is convenient to connect.
The manual type heavy current temperature controller senses temperature through the bimetallic strip 3, the temperature is deformed and then suddenly jumps to push the push rod 4 to move downwards when reaching 150 degrees, the push rod 4 pushes the movable contact piece 5 to open, the double break contacts are simultaneously disconnected, the current is cut off, the independent spring 15 is compressed at the moment, and the annular convex ring of the reset rod 11 falls on the annular step A12; when recovery is required, the reset button 17 is used.
Example 2:
the quick response small-volume large-current temperature controller is automatic.
The automatic large-current temperature controller senses temperature through the bimetallic strip 3, the temperature is deformed and then suddenly jumps to push the push rod 4 to move downwards when reaching 150 degrees, the push rod 4 pushes the movable contact piece 5 to open, the double break contacts are simultaneously disconnected, the current is cut off, the independent spring 15 is compressed at the moment, and the annular convex ring of the reset rod 11 falls on the annular step A12; when the temperature is reduced to 120 degrees, the bimetallic strip 3 automatically restores the original state, the movable contact 5 restores the original position, the double-break contacts are simultaneously connected, and the current is restored.
The same as in example 1.
Example 3:
as shown in fig. 13, the device further comprises an auxiliary disc 18, wherein the auxiliary disc 18 is a single metal plate and is located below the bimetal 3 and above the upper end of the push rod 4. The auxiliary disk 18 plays a role of an auxiliary bimetallic strip 3, and the service life of the temperature controller is prolonged.
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. A quick response small-volume large-current temperature controller, called a large-current temperature controller for short, comprises a shell, a base, a pressure plate, an end cover, a bimetallic strip, a push rod, a movable contact strip, a movable contact, a static contact strip, a rivet, an external connection plate and a support, wherein the pressure plate is arranged at the upper end of the shell, the end cover is arranged above the pressure plate, the bimetallic strip is arranged between the end cover and the pressure plate, the push rod is longitudinally arranged, the upper end of the push rod is positioned below the middle part of the bimetallic strip, and the middle part of the push rod is penetrated in a central hole in the middle part; the movable contact piece is arranged below the push rod; the bracket is sleeved at the upper part of the shell and below the end cover in a clamping and embedding way; the method is characterized in that:
two movable contacts are arranged on two sides of the movable contact piece, each movable contact comprises a left movable contact and a right movable contact, namely double break contacts, each static contact comprises a left static contact and a right static contact, each rivet comprises a left rivet and a right rivet, and each external connection board comprises a left external connection board and a right external connection board; the left static contact and the left external connection board are fixedly connected with the bottom of the shell through a left rivet, and the right static contact and the right external connection board are fixedly connected with the bottom of the shell through a right rivet; the left movable contact is arranged below the left static contact piece, the left movable contact is opposite to the left static contact piece up and down, the right movable contact is arranged below the right static contact piece, and the right movable contact is opposite to the right static contact piece up and down;
the heavy-current temperature controller also comprises a reset rod and an independent spring, wherein the reset rod is longitudinally arranged below the movable contact piece and vertically corresponds to the push rod above the movable contact piece, an annular convex ring is arranged between the middle part and the upper part of the reset rod, and the middle part of the reset rod is arranged in a central hole at the bottom of the shell in a penetrating manner and can move up and down in the vertical direction; an annular step A and an annular step B are arranged in the inner cavity of the shell from bottom to top, and the diameter of the annular step B is larger than that of the annular step A;
the independent spring is sleeved on the reset rod, the upper end of the independent spring is connected with the lower bottom surface of the movable contact spring, and the lower end of the independent spring is abutted against the annular step B; 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 reset button is arranged at the lower end of the reset rod;
the quick response small-volume large-current temperature controller is divided into a manual type and an automatic type.
2. A fast response small volume high current thermostat according to claim 1 wherein: is a large-current temperature controller with quick response and small volume 25A.
3. The fast response small-volume large-current temperature controller according to claim 1, wherein the left moving contact, the right moving contact and the static contact are all made of composite pressing plates, the composite pressing plate body is made of copper, and the contact part of the composite pressing plate is made of silver alloy.
4. A fast response small volume high current thermostat according to claim 1 wherein: the left side external wiring board left end is provided with left terminal connection hole, right side external wiring board right-hand member is provided with right terminal connection hole, left side terminal connection hole and right terminal connection hole are threaded connection hole, and the contact is reliable, connects conveniently.
5. A fast response small volume high current thermostat according to claim 1 wherein: the manual high-current temperature controller senses temperature through the bimetallic strip, the push rod is pushed downwards by sudden jump after deformation is generated, the push rod pushes the movable contact piece open, the double break contacts are simultaneously disconnected, current is cut off, the independent spring is compressed at the moment, and the annular convex ring of the reset rod falls on the annular step A; when recovery is needed, the reset button is used.
6. A fast response small volume high current thermostat according to claim 1 wherein: the automatic high-current temperature controller senses temperature through the bimetallic strip, the push rod is pushed downwards by sudden jump after deformation, the push rod pushes the movable contact piece to open, the double break contacts are simultaneously disconnected, current is cut off, the independent spring is compressed at the moment, the annular convex ring of the reset rod is fallen on the annular step A, and the annular convex ring plays a role in limiting the up-and-down movement of the reset rod; when the temperature is reduced to the required temperature, the bimetallic strip automatically restores the original state, the movable contact spring restores the original position, the double break contacts are simultaneously connected, and the current is restored.
7. A fast response small volume high current thermostat according to claim 1 wherein: the device also comprises an auxiliary disc, wherein the auxiliary disc is a single metal sheet and is positioned below the bimetallic strip and above the upper end of the push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021205738.9U CN212209344U (en) | 2020-06-25 | 2020-06-25 | Quick response small-size large-current temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021205738.9U CN212209344U (en) | 2020-06-25 | 2020-06-25 | Quick response small-size large-current temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212209344U true CN212209344U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021205738.9U Active CN212209344U (en) | 2020-06-25 | 2020-06-25 | Quick response small-size large-current temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212209344U (en) |
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2020
- 2020-06-25 CN CN202021205738.9U patent/CN212209344U/en active Active
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