Combined thermal protector structure

Abstract

The utility model discloses a combined type thermal protector structure, which belongs to the field of thermal protectors, solves the problem that the conventional thermal protector cannot quickly split each part of an equipment main body, and comprises a lower shell, an upper shell, a heat-resistant lead, an automatic switch and a resistance column, heat-resisting wires are symmetrically arranged on the side faces of the lower shell, an automatic switch is arranged in the lower shell and electrically connected with one set of heat-resisting wires, and a resistance column is arranged at the upper end of the lower shell and electrically connected with the other set of heat-resisting wires. According to the equipment shell, connection between parts can be rapidly disassembled, subsequent damaged parts can be independently replaced, the equipment shell can be rapidly disassembled and assembled, the working efficiency during equipment maintenance is improved, the situation that a traditional equipment shell cannot be opened after being bonded is changed, and therefore the working quality of the equipment is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of thermal protectors, and in particular relates to a combined thermal protector structure. Background Art

[0002] The thermal protector is a thermal protector that uses a bimetallic strip as a temperature sensing element. When the appliance is working normally, the bimetallic strip is in a free state and the contacts are in a closed / open state. When the temperature rises to the action temperature value, the bimetallic element is heated to generate internal stress and quickly actuates, opening / closing the contacts and cutting off / connecting the circuit, thereby playing a thermal protection role. When the temperature drops to the set temperature, the contacts automatically close / open and resume normal working state.

[0003] Chinese utility model patent CN217903004U discloses a combined thermal protector, comprising a shell, a plug is embedded in one side of the shell, a wire is passed through the other side of the shell, and a bimetallic strip is arranged inside the shell; a horizontal plate is fixedly connected to the inner wall of the shell, a slide groove is arranged on the top of the horizontal plate, and the bottom of the bimetallic strip is slidably installed inside the slide groove through a slider;

[0004] The above design uses an L-shaped plate to quickly extract the metal sheet inside the thermal protector to achieve the purpose of quick replacement. However, there are certain problems in actual use. Specifically, the L-shaped plate is installed on the side of the equipment and is exposed to the air as a whole. An additional matching groove needs to be opened in the thermal protector shell to connect the end of the L-shaped plate to the metal sheet. This method destroys the sealing of the thermal protector shell, and external impurities can easily pass through the matching groove into the interior of the component. There is also a risk of leakage, which affects the safety of the overall use of the equipment. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the problems raised in the above background technology, the utility model adopts the following technical solutions.

[0007] A combined thermal protector structure comprises a lower shell, an upper shell, a heat-resistant wire, an automatic switch and a resistance column, wherein the upper shell is slidably mounted on the upper end of the lower shell, the heat-resistant wires are symmetrically arranged on the side of the lower shell, the automatic switch is arranged inside the lower shell, the automatic switch is electrically connected to one group of the heat-resistant wires, the resistance column is arranged at the upper end of the lower shell, the resistance column is electrically connected to the other group of the heat-resistant wires, a combined mechanism is fixedly mounted on the lower end of the upper shell, the combined mechanism comprises a limit block, a connecting rod and a clamping plate, the limit blocks are symmetrically fixedly mounted on the inner wall of the lower shell, the connecting rods are equidistantly fixedly mounted on the lower end of the upper shell, the connecting rods are located directly above the limit blocks, the clamping plate is fixedly mounted on the end of the connecting rod, and the clamping plate is clamped in cooperation with the limit blocks.

[0008] As a preferred technical solution of the utility model, the combined mechanism also includes a positioning groove and a positioning column. The positioning grooves are symmetrically opened at the top corners of the lower shell, and the positioning column is fixedly installed at the lower end of the upper shell relative to the upper end of the positioning groove. The positioning column is slidably connected to the positioning groove.

[0009] As a preferred technical solution of the utility model, the combination mechanism also includes a protective plate, which is symmetrically fixedly installed on the lower end of the upper shell, and a card slot is opened inside the protective plate, and the card slot is slidably connected to the heat-resistant wire.

[0010] As a preferred technical solution of the utility model, the device also includes a conductive base plate and a connecting bracket. The conductive base plate is slidably installed inside the lower shell, and multiple groups of connecting brackets are fixedly installed on the upper surface of the conductive base plate. The connecting brackets are divided into three groups, namely, the first bracket at the connection between the end of the heat-resistant wire and the end of the resistor column, the second bracket at the connection between the heat-resistant wire and the automatic switch, and the third bracket at the connection between the automatic switch and the resistor column.

[0011] As a preferred technical solution of the utility model, the connecting bracket includes a sleeve rod, an extrusion screw groove, an extrusion screw and an extrusion sheet. The sleeve rod is fixedly installed on the upper surface of the conductive base plate, an extrusion screw groove is opened inside the sleeve rod, the extrusion screw is threadedly installed inside the extrusion screw groove, and an extrusion sheet is sleeved outside the extrusion screw.

[0012] As a preferred technical solution of the utility model, the heat-resistant wire includes a connecting wire, a connecting plate, a ring and a clamping ring. The ring is sleeved on the outside of the corresponding sleeve rod, the clamping ring is fixedly installed on the side of the ring, a connecting plate is arranged inside the clamping ring, and a connecting wire is fixedly installed on the end of the connecting plate.

[0013] As a preferred technical solution of the utility model, the automatic switch includes a connecting component, a fixing plate, a connecting plate and a mounting seat, the mounting seat is fixedly mounted on one side of the upper surface of the conductive base plate, the connecting component is arranged on the upper end of the mounting seat, the fixing plate is fixedly mounted on one side of the connecting component, and the connecting plate is arranged on the other side of the connecting component.

[0014] As a preferred technical solution of the utility model, the connecting assembly includes a middle-end spring sheet, a connecting spring sheet, a metal spring sheet and a contact rod. The middle-end spring sheet is arranged at the upper end of the mounting seat, the connecting spring sheet is fixedly installed on the right side of the middle-end spring sheet, the metal spring sheet is fixedly installed on the left side of the middle-end spring sheet, and the contact rod is fixedly installed on the end of the metal spring sheet.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) In the present invention, by providing a combination mechanism and a connection bracket, the connection between the components can be quickly disassembled, and the damaged components can be replaced separately later, and the device housing can be quickly disassembled and assembled, which speeds up the work efficiency during equipment maintenance and changes the situation that the traditional device housing cannot be opened after bonding, thereby ensuring the working quality of the equipment itself;

[0017] (2) In the present invention, an automatic switch and a heat-resistant wire are provided, and when current passes through the connection component, the connection component itself will be heated and the temperature will rise. Once the temperature exceeds the threshold, the components of the connection component will be deformed, disconnecting the originally unobstructed circuit, thereby ensuring thermal protection of the components connected by the heat-resistant wire, thereby ensuring the stability of the equipment during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the internal structure of the lower shell of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the combined mechanism structure of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the conductive floor surface in the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the heat-resistant wire in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the connecting bracket in the utility model;

[0024] Figure 7 It is a structural schematic diagram of the automatic switch in the utility model.

[0025] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0026] 1. Lower shell; 2. Upper shell; 3. Heat-resistant wire; 31. Connecting wire; 32. Connecting plate; 33. Sleeve ring; 34. Clamping ring; 4. Automatic switch; 41. Connecting assembly; 411. Middle-end spring piece; 412. Connecting spring piece; 413. Metal spring piece; 414. Contact rod; 42. Fixing plate; 43. Connecting plate; 44. Mounting seat; 5. Resistor column; 6. Combined mechanism; 61. Limit block; 62. Connecting rod; 63. Card plate; 64. Positioning groove; 65. Positioning column; 66. Protective plate; 7. Conductive bottom plate; 8. Connecting bracket; 81. Sleeve rod; 82. Extrusion screw groove; 83. Extrusion screw; 84. Extrusion sheet. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0030] Depend on Figure 1 , Figure 2 and Figure 3 As shown, a combined thermal protector structure includes a lower shell 1, an upper shell 2, a heat-resistant wire 3, an automatic switch 4 and a resistor column 5. The upper shell 2 is slidably installed on the upper end of the lower shell 1, and the heat-resistant wire 3 is symmetrically arranged on the side of the lower shell 1. The automatic switch 4 is arranged inside the lower shell 1, and the automatic switch 4 is electrically connected to one group of the heat-resistant wires 3. The resistor column 5 is arranged at the upper end of the lower shell 1, and the resistor column 5 is electrically connected to the other group of the heat-resistant wires 3. A combined mechanism 6 is fixedly installed at the lower end of the upper shell 2, and the combined mechanism 6 includes a limit block 61, a connecting rod 62 and a clamping plate 63. The limit block 61 is symmetrically fixedly installed on the inner wall of the lower shell 1, and the connecting rod 62 is equidistantly fixedly installed on the lower end of the upper shell 2. The connecting rod 62 is located directly above the limit block 61, and the clamping plate 63 is fixedly installed at the end of the connecting rod 62, and the clamping plate 63 is engaged with the limit block 61.

[0031] During use, two groups of heat-resistant wires 3 are connected to the equipment to be tested to provide power for the operation of the equipment, and then power is input into the automatic switch 4 through one group of heat-resistant wires 3. At this time, the internal components of the automatic switch 4 are in a fitted state, and the circuit remains unobstructed. After that, power is discharged by another group of heat-resistant wires 3 through the resistor column 5, and the overall circuit is in a smooth state. When it is necessary to inspect the components inside the lower shell 1, the upper shell 2 can be separated from the upper end of the lower shell 1 by using the combination mechanism 6, and the upper shell 2 can be pushed toward the upper end as a whole by prying the notches on both sides of the lower shell 1. At this time, the connecting rod 62 is squeezed and its own shape tilts, forcing the card plate 63 to follow the connecting rod 62 and tilt to the side at the same time. When the card plate 63 tilts to a certain angle, the card plate 63 will detach from the lower end of the connecting rod 62, and the card plate 63 can be pulled out from the bottom end of the connecting rod 62 to complete the separation of the upper shell 2 and the lower shell 1, so that the staff can inspect the internal components of the lower shell 1.

[0032] By the attached Figure 3 As shown, in this embodiment, the combination mechanism 6 also includes a positioning groove 64 and a positioning column 65. The positioning groove 64 is symmetrically opened at the top corner of the lower shell 1, and the positioning column 65 is fixedly installed at the lower end of the upper shell 2 relative to the upper end of the positioning groove 64. The positioning column 65 is slidably connected to the positioning groove 64. During use, the positioning groove 64 and the positioning column 65 are used to facilitate the vertical movement state when the upper shell 2 is docked with the lower shell 1, and the upper shell 2 and the lower shell 1 can be quickly aligned and the auxiliary components can be spliced.

[0033] By the attached Figure 3 As shown, in this embodiment, the combination mechanism 6 also includes a protective plate 66, which is symmetrically fixedly installed on the lower end of the upper shell 2. A card slot is opened inside the protective plate 66, and the card slot is slidably connected to the heat-resistant wire 3. When the protective plate 66 moves downward with the upper shell 2 during use, the protective plate 66 will squeeze the outside of the heat-resistant wire 3 and block the slot inside the lower shell 1 for inserting the auxiliary heat-resistant wire 3, thereby preventing external impurities from entering the interior of the device.

[0034] By the attached Figure 4 As shown, in this embodiment, the device also includes a conductive base plate 7 and a connecting bracket 8. The conductive base plate 7 is slidably installed inside the lower shell 1, and multiple groups of connecting brackets 8 are fixedly installed on the upper surface of the conductive base plate 7. The connecting brackets 8 are divided into three groups, namely a first bracket at the connection between the end of the heat-resistant wire 3 and the end of the resistor column 5, a second bracket at the connection between the heat-resistant wire 3 and the automatic switch 4, and a third bracket at the connection between the automatic switch 4 and the resistor column 5. In use, there are three groups of connecting brackets 8, and the connecting brackets 8 are respectively installed at the connection between each component to assist in the connection between the heat-resistant wire 3, the automatic switch 4 and the resistor column 5, and can also be quickly disassembled for each component later.

[0035] By the attached Figure 6 As shown, in this embodiment, the connecting bracket 8 includes a sleeve rod 81, an extrusion screw groove 82, an extrusion screw 83 and an extrusion sheet 84. The sleeve rod 81 is fixedly installed on the upper surface of the conductive bottom plate 7. The sleeve rod 81 is provided with an extrusion screw groove 82. The extrusion screw 83 is threadedly installed in the extrusion screw groove 82. The extrusion screw 83 is sleeved with an extrusion sheet 84 on the outside. In use, the end connectors of the circuit to be connected are sleeved on the outside of the sleeve rod 81 in turn, and then the extrusion sheet 84 is installed on the outside of the sleeve rod 81, and it is ensured that the extrusion sheet 84 is at the upper end of the connector. Then, the extrusion screw 83 is turned into the extrusion screw groove 82, and the distance between the extrusion screw 83 and the extrusion sheet 84 is gradually reduced. The subsequent extrusion screw 83 can extrude the position of the extrusion sheet 84, so that the end connectors of the circuit are fitted together to ensure the stability of the circuit.

[0036] By the attached Figure 5 As shown, in this embodiment, the heat-resistant wire 3 includes a connecting wire 31, a connecting plate 32, a ring 33 and a clamping ring 34. The ring 33 is sleeved on the outside of the corresponding sleeve rod 81, and the clamping ring 34 is fixedly installed on the side of the ring 33. A connecting plate 32 is arranged inside the clamping ring 34, and the connecting wire 31 is fixedly installed on the end of the connecting plate 32. In use, the heat-resistant wires 3 are divided into two groups. The heat-resistant wires 3 to be used are placed on the side of the corresponding connecting bracket 8, and then the ring 33 is sleeved inside the connecting bracket 8. By using the connecting bracket 8, the position of the ring 33 is fixed, and then the connecting plate 32 is installed inside the clamping ring 34. By squeezing both sides of the clamping ring 34, the clamping ring 34 is deformed as a whole, the position of the connecting plate 32 is fixed, and the position locking of the connecting wire 31 is quickly completed.

[0037] By the attached Figure 6 As shown, in this embodiment, the automatic switch 4 includes a connecting component 41, a fixing plate 42, a connecting plate 43 and a mounting seat 44, the mounting seat 44 is fixedly mounted on one side of the upper surface of the conductive bottom plate 7, the connecting component 41 is arranged at the upper end of the mounting seat 44, the fixing plate 42 is fixedly mounted on one side of the connecting component 41, and the connecting plate 43 is arranged on the other side of the connecting component 41. During use, the fixing plate 42 is used to sleeve the fixing plate 42 on the outside of the corresponding second bracket, the auxiliary fixing plate 42 is connected to the heat-resistant wire 3, and the connecting plate 43 is installed on the outside of the third bracket for connecting the automatic switch 4 with the internal circuit of the resistor column 5. Afterwards, the circuit input into the heat-resistant wire 3 is transported to the inside of the resistor column 5 through the use of the connecting component 41 to complete the circuit connection.

[0038] By the attached Figure 7As shown, in this embodiment, the connecting component 41 includes a middle-end spring piece 411, a connecting spring piece 412, a metal spring piece 413 and a contact rod 414. The middle-end spring piece 411 is arranged at the upper end of the mounting seat 44, the connecting spring piece 412 is fixedly installed on the right side of the middle-end spring piece 411, the metal spring piece 413 is fixedly installed on the left side of the middle-end spring piece 411, and the contact rod 414 is fixedly installed at the end of the metal spring piece 413. During use, when the connecting component 41 is energized, as the current continues to increase, the overall temperature of the middle-end spring piece 411 will change with the change of the current. When the temperature reaches a certain threshold, the middle-end spring piece 411 will cause the metal spring piece 413 on the side to deform, forcing the end of the metal spring piece 413 to release the fit with the connecting piece 43, complete the circuit disconnection, and stably complete the heat detection.

[0039] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A combined thermal protector structure, comprising a lower shell (1), an upper shell (2), a heat-resistant wire (3), an automatic switch (4) and a resistor column (5), wherein the upper shell (2) is slidably mounted on the upper end of the lower shell (1), the heat-resistant wire (3) is symmetrically arranged on the side of the lower shell (1), the automatic switch (4) is arranged inside the lower shell (1), the automatic switch (4) is electrically connected to one group of the heat-resistant wires (3), the resistor column (5) is arranged at the upper end of the lower shell (1), and the resistor column (5) is electrically connected to the other group of the heat-resistant wires (3), characterized in that: A combination mechanism (6) is fixedly mounted on the lower end of the upper shell (2), the combination mechanism (6) comprising a limit block (61), a connecting rod (62) and a clamping plate (63); the limit block (61) is symmetrically fixedly mounted on the inner wall of the lower shell (1); the connecting rod (62) is fixedly mounted at an equal distance on the lower end of the upper shell (2); the connecting rod (62) is located directly above the limit block (61); the clamping plate (63) is fixedly mounted on the end of the connecting rod (62); and the clamping plate (63) is engaged with the limit block (61).

2. The combined thermal protector structure according to claim 1, characterized in that: The combined mechanism (6) further comprises a positioning groove (64) and a positioning column (65); the positioning groove (64) is symmetrically provided at the top corner of the lower shell (1); the positioning column (65) is fixedly mounted on the lower end of the upper shell (2) relative to the upper end of the positioning groove (64); and the positioning column (65) is slidably connected to the positioning groove (64).

3. The combined thermal protector structure according to claim 2, characterized in that: The combined mechanism (6) also includes a protective plate (66) which is symmetrically fixedly mounted on the lower end of the upper shell (2). A slot is provided inside the protective plate (66) and the slot is slidably connected to the heat-resistant wire (3).

4. The combined thermal protector structure according to claim 1, characterized in that: The device also includes a conductive bottom plate (7) and a connecting bracket (8). The conductive bottom plate (7) is slidably mounted inside the lower shell (1). A plurality of connecting brackets (8) are fixedly mounted on the upper surface of the conductive bottom plate (7). The connecting brackets (8) are divided into three groups, namely, a first bracket at the connection between the end of the heat-resistant wire (3) and the end of the resistor column (5), a second bracket at the connection between the heat-resistant wire (3) and the automatic switch (4), and a third bracket at the connection between the automatic switch (4) and the resistor column (5).

5. The combined thermal protector structure according to claim 4, characterized in that: The connecting bracket (8) comprises a sleeve rod (81), an extrusion screw groove (82), an extrusion screw rod (83) and an extrusion sheet (84); the sleeve rod (81) is fixedly mounted on the upper surface of the conductive bottom plate (7); an extrusion screw groove (82) is provided inside the sleeve rod (81); the extrusion screw rod (83) is threadedly mounted inside the extrusion screw groove (82); and an extrusion sheet (84) is sleeved outside the extrusion screw rod (83).

6. The combined thermal protector structure according to claim 5, characterized in that: The heat-resistant wire (3) comprises a connecting wire (31), a connecting plate (32), a sleeve ring (33) and a clamping ring (34); the sleeve ring (33) is sleeved on the outside of a corresponding sleeve rod (81); the clamping ring (34) is fixedly mounted on the side of the sleeve ring (33); a connecting plate (32) is arranged inside the clamping ring (34); and a connecting wire (31) is fixedly mounted on the end of the connecting plate (32).

7. The combined thermal protector structure according to claim 5, characterized in that: The automatic switch (4) comprises a connecting component (41), a fixing plate (42), a connecting plate (43) and a mounting seat (44); the mounting seat (44) is fixedly mounted on one side of the upper surface of the conductive bottom plate (7); the connecting component (41) is arranged at the upper end of the mounting seat (44); the fixing plate (42) is fixedly mounted on one side of the connecting component (41); and the connecting plate (43) is arranged on the other side of the connecting component (41).

8. The combined thermal protector structure according to claim 7, characterized in that: The connecting assembly (41) comprises a middle spring piece (411), a connecting spring piece (412), a metal spring piece (413) and a contact rod (414); the middle spring piece (411) is arranged at the upper end of the mounting seat (44); the connecting spring piece (412) is fixedly mounted on the right side of the middle spring piece (411); the metal spring piece (413) is fixedly mounted on the left side of the middle spring piece (411); and the contact rod (414) is fixedly mounted on the end of the metal spring piece (413).

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