CN219459322U - Device convenient to keep heating wire and bottom plate insulating and thermal protector thereof - Google Patents
Device convenient to keep heating wire and bottom plate insulating and thermal protector thereof Download PDFInfo
- Publication number
- CN219459322U CN219459322U CN202320166314.3U CN202320166314U CN219459322U CN 219459322 U CN219459322 U CN 219459322U CN 202320166314 U CN202320166314 U CN 202320166314U CN 219459322 U CN219459322 U CN 219459322U
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- heating wire
- bottom plate
- contact
- base plate
- electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a device convenient for keeping a heating wire insulated from a base plate, which comprises a first base plate, a second base plate, an insulating cushion block and a heating wire, wherein the first base plate and the second base plate are arranged at intervals side by side, the insulating cushion block is arranged at the tops of the first base plate and the second base plate, the heating wire is arranged at the top of the insulating cushion block, and two ends of the heating wire are respectively electrically connected with the first base plate and the second base plate. According to the device convenient for keeping the heating wire insulated from the base plate, the insulating cushion blocks are added among the first base plate, the second base plate and the heating wire, so that the base plate and the heating wire are insulated from each other, the mica sheet can bear the high temperature of the heating wire without deformation or damage due to the self characteristics of the mica sheet, the performance of the protector can be effectively and stably improved, and the short circuit phenomenon caused by the contact between the middle part of the heating wire and the base plate or the bimetallic strip can be effectively reduced.
Description
Technical Field
The utility model relates to the field of protectors, in particular to a device for conveniently keeping a heating wire insulated from a bottom plate.
Background
At present, various household motors and industrial motors have abnormality in the running process, such as overload, starting locked rotor and the like. In view of protecting the motor, the motor is conventionally protected by temperature overheat, but because of the time difference of temperature transmission, the high-speed motor generates heat and rises quickly after locked-rotor, and the motor still can be burnt at high temperature by adopting a temperature overheat protection mode conventionally.
Therefore, according to the current of the motor, a heating wire is configured to assist heating to cooperate with the dual protection of the current or the temperature of the protector (for example, the utility model patent with the patent number of CN 201920961248.2). But in actual production or use, the heating wire and the bottom plate or the bimetallic strip of the protector are easy to touch in the production and assembly process to cause a short circuit state between the heating wire and the bottom plate or the bimetallic strip, and when the whole machine is used, the heating wire can also form a short circuit in the heating process to cause delay protection of the protector or no protector finally causes burning of the whole machine.
In view of the above problems, the present inventors have actively studied and innovated based on the practical experience and expertise which are rich for many years in such product engineering applications, and in combination with the application of the theory, in order to create a device which is convenient for keeping the insulation between the heating wire and the base plate, so that the device has more practicability.
Disclosure of Invention
One of the objects of the present utility model is to provide a device that facilitates maintaining the insulation of the heating wire from the base plate.
The above object of the present utility model is achieved by the following technical solutions:
the device comprises a first bottom plate, a second bottom plate, an insulating cushion block and a heating wire, wherein a static contact is fixed on the second bottom plate, the first bottom plate and the second bottom plate are arranged side by side at intervals, the insulating cushion block is arranged at the tops of the first bottom plate and the second bottom plate, the heating wire is arranged at the top of the insulating cushion block, and two ends of the heating wire are respectively electrically connected with the first bottom plate and the second bottom plate;
the first bottom plate is provided with a heating wire contact I, the second bottom plate is provided with a heating wire contact II, and the insulating cushion block is provided with a limiting opening I for the heating wire contact I to extend and a limiting opening II for the heating wire contact II to extend for positioning the first bottom plate and the second bottom plate; the middle part of the heating wire is insulated from the first bottom plate and the second bottom plate through the insulating cushion block, and two ends of the heating wire are respectively connected with the first heating wire contact and the second heating wire contact in a contact way.
The present utility model may be further configured in a preferred example to: the insulating cushion block comprises a first connecting part, a second connecting part and a supporting part, wherein the first connecting part and the second connecting part are respectively positioned at two ends, the supporting part is positioned at the middle part and used for supporting a heating wire, the first limiting opening is formed in the first connecting part, and the second limiting opening is formed in the second connecting part; the second heating wire contact is not contacted with the static contact, and the static contact extends out of the insulating cushion block through the second limiting opening.
The present utility model may be further configured in a preferred example to: the first heating wire contact is provided with a rectangular protruding portion, and the edge of the first limiting opening is attached to the outer edge of the first heating wire contact to limit horizontal displacement of the first bottom plate.
The present utility model may be further configured in a preferred example to: the second limiting opening is set to be a rectangular opening, the second opposite angles of the stationary contact and the heating wire contact are arranged on the inner side of the second limiting opening, and two sets of opposite angle side edges of the second limiting opening are respectively attached to the outer wall of the second heating wire contact and the outer wall of the stationary contact to limit the horizontal displacement of the second bottom plate.
The present utility model may be further configured in a preferred example to: and the first bottom plate is provided with a riveting part, and the riveting part is arranged on the outer side of the insulating cushion block.
The present utility model may be further configured in a preferred example to: the insulating cushion block is arranged as an insulating mica sheet.
The present utility model may be further configured in a preferred example to: the heating wire is set to Z, the heating wire roof is less than the setting of stationary contact roof.
The second object of the present utility model is to provide a thermal protector, which comprises the device for keeping the heating wire insulated from the bottom plate, and further comprises a first electrode having a receiving groove, wherein the inner bottom of the receiving groove is provided with a thermal response element, the first bottom plate, the second bottom plate and the heating wire are connected with each other to form a second electrode, the second electrode is implanted into the receiving groove of the first electrode, an insulating layer is arranged between the second electrode and the first electrode for separation, and the first electrode and the second electrode are respectively led out with a wire joint for connecting wires.
The beneficial technical effects of the utility model are as follows:
1. according to the device convenient for keeping the insulation between the heating wire and the bottom plate, the insulating cushion block is sleeved on the heating wire contact I of the first bottom plate and the heating wire contact II of the second bottom plate through the limiting opening I and the limiting opening II at two ends, so that the relative positions of the first bottom plate and the second bottom plate are limited to be unchanged, and the two are arranged at intervals;
2. the heating wire is arranged on the insulating cushion block to be insulated from the first bottom plate and the second bottom plate, two ends of the heating wire are respectively electrically connected with the first bottom plate and the second bottom plate through a heating wire contact I and a heating wire contact II, when the protector works, current sequentially passes through the first bottom plate, the heating wire and the second bottom plate, wherein the heating wire is heated up due to the passing of the current, heat is transferred to a bimetallic strip in the protector, the front surface of the bimetallic strip is a surface with a larger thermal expansion coefficient, the back surface of the bimetallic strip is a surface with a smaller thermal expansion coefficient, and the heating wire is deformed to separate a movable contact from a static contact after the temperature is quickly raised to a set value through the difference of the thermal expansion coefficients, so that a loop is cut off to play a role in protection;
3. in the prior art, the product is assembled by a bottom plate and heating wires, and the heating wires with small diameters are easy to deform and warp due to various outer diameters of the heating wires, so that the heating wires are in contact with the bottom plate to form a short circuit, and the heating wires fail and do not generate heat, so that the protector finally loses the protection function; according to the product, the insulating cushion blocks (mica sheets) are added among the first bottom plate, the second bottom plate and the heating wires, so that the bottom plate and the heating wires are insulated from each other, the self-characteristics of the mica sheets can bear the high temperature of the heating wires without deformation or damage, the performance of the protector can be effectively and stably improved, and the short circuit phenomenon caused by the contact between the middle part of the heating wires and the bottom plate or the bimetallic strip can be effectively reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present utility model.
Fig. 2 is a schematic exploded view of the present utility model.
Fig. 3 is a schematic view of the overall structure of the thermal protector of the present utility model.
Fig. 4 is a schematic longitudinal section of the thermal protector of the present utility model.
Fig. 5 is a schematic cross-sectional view of a thermal protector of the present utility model.
In the figure, 1, a first bottom plate; 11. a heating wire contact I; 12. a caulking part; 2. a second base plate; 21. a heating wire contact II; 3. insulating cushion blocks; 31. a first connection portion; 311. a first limit opening; 32. a second connecting portion; 321. a second limit opening; 33. a support part; 4. a heating wire; 5. a stationary contact; 6. a first electrode; 61. a receiving groove; 62. u-shaped edge wrapping; 7. a thermally responsive member; 8. an insulating layer; 10. and a second electrode.
Detailed Description
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
Referring to fig. 1 and 2, a device for conveniently keeping a heating wire insulated from a base plate according to the present utility model includes a first base plate 1, a second base plate 2, an insulating spacer 3 and a heating wire 4. The first base plate 1 is provided with a caulking portion 12, and the caulking portion 12 is provided outside the insulating spacer 3. A stationary contact 5 is fixed on the second base plate 2. The first bottom plate 1 and the second bottom plate 2 are arranged at intervals side by side, the insulating cushion block 3 is arranged at the tops of the first bottom plate 1 and the second bottom plate 2, the heating wire 4 is arranged at the top of the insulating cushion block 3, and two ends of the heating wire 4 are respectively electrically connected with the first bottom plate 1 and the second bottom plate 2.
Specifically, a first heating wire contact 11 is arranged on the first bottom plate 1, a second heating wire contact 21 is arranged on the second bottom plate 2, a first limiting opening 311 for extending the first heating wire contact 11 and a second limiting opening 321 for extending the second heating wire contact 21 are formed in the insulating cushion block 3, and the first and second insulating cushion blocks are used for positioning the first and second bottom plates 1 and 2; the middle part of the heating wire 4 is insulated from the first bottom plate 1 and the second bottom plate 2 through the insulating cushion block 3, and two ends of the heating wire 4 are respectively in contact connection with the first heating wire contact 11 and the second heating wire contact 21.
The insulating spacer 3 is arranged as an insulating mica sheet. The insulating cushion block 3 comprises a first connecting part 31 and a second connecting part 32 which are respectively positioned at two ends, and a supporting part 33 which is positioned at the middle part and used for supporting the heating wire 4, wherein a first limiting opening 311 is formed in the first connecting part 31, and a second limiting opening 321 is formed in the second connecting part 32; the second contact 21 of the heating wire 4 is not contacted with the static contact 5, and the static contact 5 extends out of the insulating cushion block 3 through the second limiting opening 321. The static contact 5 extends out of the insulating cushion block 3 through the second limiting opening 321, so that the area of the insulating cushion block 3 can be effectively increased, and the second limiting opening 321 is convenient to process.
In order to realize the accurate positioning of the first bottom plate 1 and the second bottom plate 2, the contact short circuit between the two is prevented, so that the accuracy of the installation position of the heating wire 4 is ensured: the first heating wire contact 11 is arranged as a rectangular protruding part, and the edge of the first limiting opening 311 is attached to the outer edge of the first heating wire contact 11 to limit the horizontal displacement of the first bottom plate 1. The second limiting opening 321 is provided with a rectangular opening, the stationary contact 5 and the second heating wire contact 21 are diagonally arranged on the inner side of the second limiting opening 321, and two groups of diagonal side edges of the second limiting opening 321 are respectively attached to the outer wall of the second heating wire contact 21 and the outer wall of the stationary contact 5 so as to limit the horizontal displacement of the second bottom plate 2. Limiting port one 311 and limiting port two 321 are respectively in conflict limit with fixed contact 5 through heating wire contact one 11, heating wire contact two 21, can guarantee that insulating cushion 3 does not float at first bottom plate 1 and second bottom plate 2 top, improve its mounted position's accuracy, be convenient for the spot welding connection of heating wire 4 both ends and heating wire contact one 11 and heating wire contact two 21.
To reduce the possibility of short circuit caused by contact between the heating wire 4 and the bimetallic strip, the heating wire 4 can be Z-shaped, and the top wall of the heating wire 4 is lower than the top wall of the stationary contact 5.
Referring to fig. 3 to 5, the present utility model also discloses a thermal protector comprising the above-mentioned device for conveniently keeping the heating wire insulated from the base plate, and further comprising a first electrode 6. The first electrode 6 has a receiving groove 61, and a thermally responsive member 7 is provided at an inner bottom of the receiving groove 61, and the thermally responsive member 7 may be provided as a bimetal. The first base plate 1, the second base plate 2 and the heating wire 4 are connected with each other to form a second electrode 10, the second electrode 10 is implanted into the first electrode accommodating groove 61, an insulating layer 8 is arranged between the second electrode 10 and the first electrode 6 for separation, the insulating layer 8 is insulating paper, and the insulating paper is implanted together with the second electrode 10 after coating the second electrode 10; the second electrode 10 is at least divided into two sections (two sections are shown as a first bottom plate 1 and a second bottom plate 2 respectively), gaps are formed between the two sections at intervals, the two sections are connected and conducted through a heating wire 4 with better heat conduction performance than the second electrode 10, and two ends of the heating wire 4 are connected with the first bottom plate 1 and the second bottom plate 2 through a heating wire contact 11 and a heating wire contact 21 in a spot welding mode respectively. The first electrode 6 and the second electrode 10 each lead out a wired connection to connect a wire.
The side of the accommodating groove 61 of the first electrode 6 forms a U-shaped wrapping edge 62; the second electrode 10 is a flat sheet, and is connected along the U-shaped groove of the edge 62; the second electrode 10 is divided into two sections, a gap is formed between the two sections, and the two sections are connected and conducted by a heating wire 4 with better heat conduction performance than the second electrode 10, and the whole width of the heating wire 4 is smaller than the width of the second electrode 10. The gap can promote air circulation, and the thermal conductivity of the heating wire 4 is better, so that the heat absorption and heat dissipation effects of the thermal response element 7 can be improved, and the working performance of the thermal protector is improved.
In the process of working the protector (as in the patent content of patent number CN 201920961248.2), the current sequentially passes through the first base plate 1, the heating wire 4 and the second base plate 2, wherein the temperature of the heating wire 4 rises due to the passing of the current, heat is transferred to a bimetallic strip in the protector, the front surface of the bimetallic strip is a surface with a larger thermal expansion coefficient, the back surface of the bimetallic strip is a surface with a smaller thermal expansion coefficient, and the moving contact and the fixed contact 5 are separated through deformation after the temperature rises to a set value rapidly due to the difference of the thermal expansion coefficients, so that a loop is cut off to play a role of protection; the insulating cushion block 3 (mica sheet) arranged among the first bottom plate 1, the second bottom plate 2 and the heating wire 4 is used for insulating the bottom plate and the heating wire 4 from each other, and the self characteristic of the mica sheet can bear the high temperature of the heating wire 4 without deformation or damage, so that the performance of the protector can be effectively and stably improved, and the short circuit phenomenon caused by the contact between the middle part of the heating wire 4 and the bottom plate or the bimetallic strip can be effectively reduced.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. Device convenient to keep heater and bottom plate insulating, its characterized in that: the insulation cushion block is arranged at the top of the first bottom plate and the top of the second bottom plate, the heating wire is arranged at the top of the insulation cushion block, and two ends of the heating wire are respectively electrically connected with the first bottom plate and the second bottom plate;
the first bottom plate is provided with a heating wire contact I, the second bottom plate is provided with a heating wire contact II, and the insulating cushion block is provided with a limiting opening I for the heating wire contact I to extend and a limiting opening II for the heating wire contact II to extend for positioning the first bottom plate and the second bottom plate; the middle part of the heating wire is insulated from the first bottom plate and the second bottom plate through the insulating cushion block, and two ends of the heating wire are respectively connected with the first heating wire contact and the second heating wire contact in a contact way.
2. The apparatus for facilitating insulation of a heating wire from a base plate of claim 1, wherein: the insulating cushion block comprises a first connecting part, a second connecting part and a supporting part, wherein the first connecting part and the second connecting part are respectively positioned at two ends, the supporting part is positioned at the middle part and used for supporting a heating wire, the first limiting opening is formed in the first connecting part, and the second limiting opening is formed in the second connecting part; the second heating wire contact is not contacted with the static contact, and the static contact extends out of the insulating cushion block through the second limiting opening.
3. The apparatus for facilitating insulation of a heating wire from a base plate as set forth in claim 2, wherein: the first heating wire contact is provided with a rectangular protruding portion, and the edge of the first limiting opening is attached to the outer edge of the first heating wire contact to limit horizontal displacement of the first bottom plate.
4. A device for facilitating insulation of a heating wire from a base plate as claimed in claim 3, wherein: the second limiting opening is set to be a rectangular opening, the second opposite angles of the stationary contact and the heating wire contact are arranged on the inner side of the second limiting opening, and two sets of opposite angle side edges of the second limiting opening are respectively attached to the outer wall of the second heating wire contact and the outer wall of the stationary contact to limit the horizontal displacement of the second bottom plate.
5. The apparatus for facilitating insulation of a heating wire from a base plate of claim 1, wherein: and the first bottom plate is provided with a riveting part, and the riveting part is arranged on the outer side of the insulating cushion block.
6. The apparatus for facilitating insulation of a heating wire from a base plate of claim 1, wherein: the insulating cushion block is arranged as an insulating mica sheet.
7. The apparatus for facilitating insulation of a heating wire from a base plate of claim 1, wherein: the heating wire is set to Z, the heating wire roof is less than the setting of stationary contact roof.
8. A thermal protector comprising the device for facilitating insulation of a heating wire from a base plate as claimed in any one of claims 1 to 7, characterized in that: the wire connector is characterized by further comprising a first electrode, wherein the first electrode is provided with a containing groove, a thermal response element is arranged at the inner bottom of the containing groove, the first bottom plate, the second bottom plate and the heating wire are connected with each other to form a second electrode, the second electrode is implanted into the containing groove of the first electrode, an insulating layer is arranged between the second electrode and the first electrode for separation, and the first electrode and the second electrode are respectively led out of a wire connector for connection of a wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320166314.3U CN219459322U (en) | 2023-01-17 | 2023-01-17 | Device convenient to keep heating wire and bottom plate insulating and thermal protector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320166314.3U CN219459322U (en) | 2023-01-17 | 2023-01-17 | Device convenient to keep heating wire and bottom plate insulating and thermal protector thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219459322U true CN219459322U (en) | 2023-08-01 |
Family
ID=87418547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320166314.3U Active CN219459322U (en) | 2023-01-17 | 2023-01-17 | Device convenient to keep heating wire and bottom plate insulating and thermal protector thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219459322U (en) |
-
2023
- 2023-01-17 CN CN202320166314.3U patent/CN219459322U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |