CN218602340U

CN218602340U - Terminal buckle connection type thermal protector

Info

Publication number: CN218602340U
Application number: CN202223248872.9U
Authority: CN
Inventors: 成明生; 鞠俊
Original assignee: JIANGSU CHANGSHENG ELECTRIC APPLIANCE CO Ltd
Current assignee: JIANGSU CHANGSHENG ELECTRIC APPLIANCE CO Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-10
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a hot protector technical field especially relates to a terminal buckle connection formula hot protector, include: the protective shell is internally provided with a cavity, and one end of the protective shell is provided with an opening; a conductive assembly disposed within the protective shell; the sealing glue is used for sealing the opening of the protective shell; the conductive assembly includes: the upper conductor is provided with a mounting cavity with a downward opening, and one end of the upper conductor is provided with a first extension section; the bimetallic strip is arranged in the mounting cavity; one side edge of two opposite side edges of the bimetallic strip is fixedly connected with the top of the mounting cavity, and the other side edge is provided with a movable contact; the lower conductor is used for plugging the opening of the installation cavity; the lower conductor is also provided with a static contact, and one end of the lower conductor is provided with a second extension section; an insulator disposed between the upper conductor and the lower conductor; the insulator is provided with a abdicating hole; the two wire clamping terminals are respectively connected with the first extension section and the second extension section through a connecting structure; one end of each wire clamping terminal is provided with a wire clamping groove. The thermal protector can be more conveniently connected into a circuit.

Description

Terminal buckle connection type thermal protector

Technical Field

The utility model relates to a hot protector technical field especially relates to a terminal buckle connection formula hot protector.

Background

In many electric devices such as air conditioners, motors and the like, a thermal protector is usually connected into a circuit of the electric devices, and the thermal protector can break the circuit when the circuit is overloaded, so that the damage of electrical elements or the fire danger caused by the overheating of the circuit can be prevented. The existing thermal protector is usually connected into a circuit of electric equipment through a wire clamping terminal or an electric wire, the wire clamping terminal or the electric wire and the electric wire or an element interface in the electric equipment are usually required to be welded together by tin, the welding connection mode needs personnel to prepare welding rods, welding guns and other equipment for operation, the operation level requirement on the personnel during welding is high, and therefore the operation efficiency and the operation cost are high when the thermal protector is connected into the circuit due to the welding connection mode.

Therefore, there is a need for a thermal protector that allows easier access to the circuit.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hot protector of terminal buckle connection formula can solve the problem in the background art effectively.

The utility model provides a pair of terminal buckle connection type thermal protector, include:

the protective shell is internally provided with a cavity, and one end of the protective shell is provided with an opening;

a conductive assembly disposed within the protective case;

the sealing glue is used for sealing the opening of the protective shell;

the conductive assembly includes:

the upper conductor is provided with a mounting cavity with a downward opening, and one end of the upper conductor is provided with a first extension section extending to the outer side of the protective shell;

the bimetallic strip is arranged in the mounting cavity and deforms along with the temperature change; one side edge of the two opposite side edges of the bimetallic strip is fixedly connected with the top of the mounting cavity, and the other side edge is provided with a movable contact;

the lower conductor is used for plugging the opening of the installation cavity; the lower conductor is also provided with a static contact, and one end of the lower conductor is provided with a second extension section extending to the outer side of the protective shell;

at low temperature, the bimetallic strip drives the movable contact and the fixed contact to be attached; at high temperature, the bimetallic strip drives the movable contact and the fixed contact to separate;

an insulator disposed between the upper conductor and the lower conductor; the insulator is provided with a relief hole;

the two wire clamping terminals are respectively connected with the first extension section and the second extension section through a connecting structure; and one end of each wire clamping terminal, which is far away from the connecting structure, is provided with a wire clamping groove.

Further, the lower conductor is provided with an adjustment cavity which is concave downwards, and the static contact is arranged in the adjustment cavity.

Further, still set up the spacing groove of undercut in the adjustment intracavity, the stationary contact sets up the spacing inslot, just the inner wall laminating of spacing groove the stationary contact side.

Furthermore, the connecting structure is a clamping ring structure, and the end part of the wire clamping terminal extends into the clamping ring structure.

Furthermore, a clamping groove is formed in the side face of the end portion of the wire clamping terminal, and the clamping ring structure extends into the clamping groove.

Furthermore, the side walls at two sides of the wire clamping groove are gradually folded at intervals along the direction towards the opening of the wire clamping groove.

Further, a plurality of grooves are formed in the inner wall of the wire clamping groove.

Furthermore, the middle section of the wire clamping terminal is provided with a bending section.

Through the technical scheme of the utility model, can realize following technological effect:

the thermal protector has the advantages that the installation cavity is formed in the upper conductor, and the bimetallic strip is hidden in the installation cavity, so that the bimetallic strip is not interfered by an external object in the working process, and the working reliability of the thermal protector is ensured; the thermal protector also seals the conductive assembly through the protective shell, so that the interior of the conductive assembly is effectively prevented from being affected with damp or polluted; this thermal protector is still through setting up the card line terminal, when it inserts the circuit of consumer, only need can realize connecting in the draw-in groove of card line terminal with the electric wire card income of consumer to replace traditional welded connection mode, promoted the convenience that thermal protector inserted the circuit effectively.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a terminal buckle connection type thermal protector of the present invention;

FIG. 2 is a cross-sectional view taken at A of FIG. 1;

FIG. 3 is a component exploded view of the conductive assembly of the present invention;

FIG. 4 is a schematic structural view of a wire clip terminal of the present invention;

reference numerals are as follows: 1. a protective shell; 2. an upper conductor; 21. a mounting cavity; 22. a first extension section; 3. a bimetal; 31. a movable contact; 4. a lower conductor; 41. a stationary contact; 42. a second extension segment; 43. adjusting the cavity; 44. a limiting groove; 5. an insulator; 51. a hole of abdication; 6. a connecting structure; 7. a wire clamping terminal; 71. a wire clamping groove; 72. a card slot; 73. a groove; 74. and (7) bending.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The utility model provides a terminal buckle connection type thermal protector, as shown in 1~4, include:

the protective shell 1 is made of insulating plastic materials, a cavity is formed in the protective shell, and an opening for communicating the inside and the outside of the protective shell 1 is formed in one end of the protective shell;

the conductive assembly is plugged into the protective shell 1 through an opening of the protective shell 1 and used for realizing the functions of conduction and open circuit protection;

after the conductive assembly is plugged into the protective shell 1, the opening of the protective shell 1 is sealed by using sealing glue, so that the cavity in the protective shell 1 is in a sealed state.

Wherein, the concrete structure of electrically conductive subassembly includes:

the upper conductor 2 is provided with a mounting cavity 21 which is opened downwards, and one end of the upper conductor is provided with a first extending section 22 which extends to the outer side of the protective shell 1;

a bimetal 3 installed in the installation cavity 21 and deformed with a temperature change; one of two opposite side edges of the bimetallic strip 3 is fixedly connected with the top of the mounting cavity 21, and the other side edge is provided with a movable contact 31;

the lower conductor 4 is used for plugging the opening of the installation cavity 21; the lower conductor 4 is also provided with a static contact 41, and one end of the lower conductor is provided with a second extending section 42 extending to the outer side of the protective shell 1;

it should be noted that the bimetallic strip 3 is the prior art, the main structure of the bimetallic strip is formed by stacking two different metal strips, the two different metals have different thermal expansion coefficients, and the bimetallic strip 3 is deformed due to different expansion amounts of the two different metals when heated, and the more specific structures and principles of the bimetallic strip are the prior art and are not described herein. In the thermal protector, the bimetallic strip 3 should meet the following requirements when being installed: firstly, a circuit breaking temperature is artificially set, the temperature is determined according to the specific use scene of the thermal protector, when the temperature is lower than the circuit breaking temperature, the edge of the bimetallic strip 3 is in a downward turnover mode, and at the moment, the edge of the bimetallic strip 3 drives the movable contact 31 to be attached to the fixed contact 41; the edge of the bimetallic strip 3 will gradually move upwards along with the temperature rise, but before the temperature reaches the breaking temperature, the state that the movable contact 31 and the fixed contact 41 are jointed is still maintained (but the pressure of the movable contact 31 for pressing against the fixed contact 41 is gradually reduced along with the temperature rise); when the temperature is higher than the breaking temperature, the edge of the bimetallic strip 3 moves upwards to drive the movable contact 31 to be separated from the fixed contact 41;

an insulator 5 disposed between the upper conductor 2 and the lower conductor 4; the insulator 5 is provided with a relief hole 51, and the top surface of the static contact 41 enters the installation cavity 21 through the relief hole 51 so as to be attached to the movable contact 31;

two wire clamping terminals 7 connected with the first extension section 22 and the second extension section 42 respectively through the connecting structure 6; one end of each wire clamping terminal 7 far away from the connecting structure 6 is provided with a wire clamping groove 71.

Specifically, the working principle of the thermal protector is as follows:

firstly, the thermal protector is connected into a circuit of electric equipment through two wire clamping terminals 7: the electric wire in the electric equipment circuit is clamped into the wire clamping groove 71, and if necessary, a clamp such as a clamp can be used for bending the side surface of the wire clamping groove 71, so that the wire is clamped by the whole wire clamping groove 71 flatly, and the access of the thermal protector is finished;

under the condition that the circuit is normal, the temperature of the circuit is lower than the breaking temperature of the bimetallic strip 3, at the moment, the movable contact 31 is attached to the fixed contact 41, and the current is conducted through the paths of the upper conductor 2, the bimetallic strip 3, the movable contact 31, the fixed contact 41 and the lower conductor 4;

when the circuit temperature rises due to circuit overload and is higher than the circuit breaking temperature of the bimetallic strip 3, the movable contact 31 and the fixed contact 41 are separated, the conductive component can not conduct current, and the circuit breaking protection function is realized.

A downwardly recessed adjustment chamber 43 is preferably provided on the lower conductor 4, and the stationary contact 41 is disposed in the adjustment chamber 43. The adjusting cavity 43 is usually manufactured by a stamping process, so that the depth of the adjusting cavity 43 can be adjusted by only adjusting parameters of the stamping process, and further, the distance between the stationary contact 41 and the bimetallic strip 3 is adjusted, thereby adjusting the sensitivity of the circuit breaking action of the thermal protector.

Preferably, a downward-recessed limiting groove 44 is further formed in the adjustment cavity 43, the fixed contact 41 is arranged in the limiting groove 44, the inner wall of the limiting groove 44 is attached to the side surface of the fixed contact 41, and the fixed contact 41 is prevented from being inclined or sliding through the limiting groove 44, so that the contact reliability between the movable contact 31 and the fixed contact 41 is ensured.

The connecting structure 6 can be implemented in various forms, such as welding, screw connection, etc.; the thermal protector provides an optimal implementation mode, as shown in fig. 1 and fig. 3, the connecting structure 6 is set to be a snap ring structure, the end part of the wire clamping terminal 7 extends into the snap ring structure, and the end part of the wire clamping terminal 7 is clamped tightly through the snap ring structure, so that the thermal protector does not need to use welding equipment in the assembling process, and the assembling efficiency is effectively improved. The specific installation mode is as follows: when blanking the upper conductor 2 and the lower conductor 4, the strip-shaped structures are blanked at the end parts of the first extension segment 22 and the second extension segment 42, then the two ends of the strip-shaped structures are bent upwards to form groove bodies, at the moment, the end parts of the wire clamping terminals 7 are placed into the groove bodies, and then the two ends of the strip-shaped structures are continuously bent to form annular clamping ring structures. Preferably, the clamping groove 72 is formed in the side surface of the end portion of the wire clamping terminal 7, as shown in fig. 4, the snap ring structure extends into the clamping groove 72, and then two end surfaces of the snap ring structure abut against the side surfaces of two sides of the clamping groove 72, so that the wire clamping terminal 7 is prevented from moving or falling off.

Preferably, the side walls of the two sides of the wire clamping groove 71 are gradually folded at intervals along the direction toward the opening of the wire clamping groove 71, so that the wire is not easy to fall off from the opening after the wire is placed in the wire clamping groove 71. The inner wall of the wire clamping groove 71 is preferably provided with a plurality of grooves 73, the grooves 73 can facilitate personnel to bend the side wall of the wire clamping groove 71, and meanwhile, the roughness of the inner wall of the wire clamping groove 71 can be increased, so that the wire can be clamped more tightly. The middle section of the wire clamping terminal 7 can be preferably provided with a bending section 74, the bending section 74 can be vertically bent or transversely bent, and the height of the wire clamping grooves 71 can be adjusted through the vertically bent bending section 74, so that the wire clamping grooves 71 of the two wire clamping terminals 7 are aligned in the height direction; the bending section 74 which is bent transversely can increase the distance between the wire clamping grooves 71 of the two wire clamping terminals 7, and short circuit caused by mutual mistaken contact is avoided.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A terminal snap-fit connection thermal protector, comprising:

the protective shell (1) is internally provided with a cavity, and one end of the protective shell is provided with an opening;

the conductive assembly is arranged in the protective shell (1);

the sealing glue is used for sealing the opening of the protective shell (1);

the conductive assembly includes:

the upper conductor (2) is provided with a mounting cavity (21) with a downward opening, and one end of the upper conductor is provided with a first extension section (22) extending to the outer side of the protective shell (1);

the bimetallic strip (3) is installed in the installation cavity (21); one of two opposite side edges of the bimetallic strip (3) is fixedly connected with the top of the mounting cavity (21), and the other side edge is provided with a movable contact (31);

the lower conductor (4) is used for plugging the opening of the installation cavity (21); a static contact (41) is further arranged on the lower conductor (4), and a second extending section (42) extending to the outer side of the protective shell (1) is arranged at one end of the lower conductor;

an insulator (5) disposed between the upper conductor (2) and the lower conductor (4); the insulator (5) is provided with a yielding hole (51);

the two wire clamping terminals (7) are respectively connected with the first extension section (22) and the second extension section (42) through a connecting structure (6); and a wire clamping groove (71) is formed in one end, far away from the connecting structure (6), of each wire clamping terminal (7).

2. A terminal snap-connection thermal protector according to claim 1, characterized in that the lower conductor (4) is provided with an adjustment cavity (43) recessed downwards, the stationary contact (41) being provided within the adjustment cavity (43).

3. The terminal snap-fit thermal protector as claimed in claim 2, wherein a downwardly recessed limit groove (44) is further provided in the adjustment chamber (43), the stationary contact (41) is provided in the limit groove (44), and an inner wall of the limit groove (44) abuts against a side surface of the stationary contact (41).

4. A terminal snap-connection thermal protector according to claim 1, characterized in that the connection structure (6) is a snap ring structure into which the ends of the wire clamping terminals (7) protrude.

5. The terminal snap-connection thermal protector according to claim 4, characterized in that a snap groove (72) is provided at the end side of the wire clamping terminal (7), and the snap ring structure extends into the snap groove (72).

6. The terminal snap-fit thermal protector according to claim 1, wherein the sidewall spaces on both sides of the snap groove (71) are gradually narrowed in a direction toward the opening of the snap groove (71).

7. A terminal snap-fit thermal protector according to claim 1, characterized in that the snap groove (71) is provided with a plurality of grooves (73) in its inner wall.

8. A terminal snap-fit thermal protector according to claim 1, characterized in that the middle section of the wire clamping terminal (7) is provided with a bent section (74).