CN217306425U - TB02 series temperature limiter - Google Patents

Abstract

The utility model provides a TB02 series temperature limiter, which comprises a shell, a movable contact, a bimetallic strip, a static contact, a fixed seat, epoxy resin, a movable contact terminal and a lead; the utility model discloses utilize the temperature sensing and the electric current fuel factor of sheetmetal self to play the effect of protection, this protector internal resistance is little, small, longe-lived, the action is agile.

Description

TB02 series temperature limiter

Technical Field

The utility model relates to a TB02 series temperature limiter, which belongs to the field of electrical elements.

Background

The TB02 series current temperature type thermal protector is widely used in the circuit of AC 220V, 50 Hz. The protector is usually used for overcurrent and overheat protection of single-phase motor locked-rotor and overload abnormal working states, as well as overheat and overload protection of electric heating appliances, lighting lamps, electric tools, integrated circuits, transformers, fractional horsepower motors, computers, ballasts, transformers, induction cookers, microwave ovens and automobile motors, and the protector can also be used for overheat and overcurrent protection and temperature control of general electrical equipment such as integrated circuits and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a TB02 series temperature limiter, the utility model discloses a purpose can reach through adopting following technical scheme:

a TB02 series temperature limiter comprises a shell, a movable contact, a bimetallic strip, a static contact, a fixed seat, epoxy resin, a movable contact terminal and a lead; one side of the bimetallic strip is provided with a movable contact; the static contact is arranged at the top end of the inner part of the shell and is tightly leaned against the movable contact; the fixed seat is arranged between the bimetallic strip and the static contact piece; epoxy resin is arranged between the lead and the fixed seat; the movable contact piece terminal is connected with a lead.

Preferably, the bimetal is in a geometric shape, and the shape of the bimetal changes according to the opening and closing state of the temperature limiter.

Preferably, a platform is arranged on the ground inside the shell, and the metal sheet is arranged on the platform.

Preferably, the static contact is connected with the wire through epoxy resin.

Preferably, shell one end is equipped with the opening, and the inside top of shell does not open one side and is equipped with a mounting groove, the static contact sets up in the mounting groove.

Has the beneficial effects that:

1) the protector adopts a three-metal sheet with a certain geometric shape, does not need an auxiliary mechanism, and only depends on the temperature sensing and current heat effect (expansion and contraction effect) of the metal sheet, so that the state of the three-metal element is rapidly reversed and changed (flexural deformation), and the contact is directly driven to realize automatic cut-off of a control circuit and connection of an alarm circuit. The overheat and overload protection function is realized.

2) The product has the characteristics of small internal resistance, small volume, long service life and quick action.

Drawings

Fig. 1 is a schematic view of the overall structure of a TB02 series temperature limiter of the present invention;

fig. 2 is a schematic top view of a TB02 series temperature limiter according to the present invention;

fig. 3 is a schematic side view of a TB02 series temperature limiter according to the present invention;

FIG. 4 is a schematic diagram of a connection line of a TB02 series temperature limiter according to the present invention;

in the figure: the device comprises a shell 1, a movable contact 2, a bimetallic strip 3, a static contact 4, a fixed seat 5, epoxy resin 6, a movable contact terminal 7 and a lead 8.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

As shown in fig. 1-3, a TB02 series temperature limiter comprises a casing 1, a moving contact 2, a bimetallic strip 3, a static contact 4, a fixed seat 5, epoxy resin 6, a moving contact terminal 7 and a lead 8; one side of the bimetallic strip 3 is provided with a movable contact 2; the static contact piece 4 is arranged at the top end in the shell 1, and the static contact piece 4 is tightly leaned against the movable contact 2; the fixed seat 5 is arranged between the bimetallic strip 3 and the static contact 4; epoxy resin 6 is arranged between the lead 8 and the fixed seat 5; the movable contact terminal 7 is connected with a wire.

Preferably, the bimetal 3 has a geometric shape, and the shape of the bimetal 3 changes according to the opening and closing state of the temperature limiter.

Preferably, the bottom surface inside the housing 1 is provided with a platform, and the metal sheet 3 is arranged on the platform.

Preferably, the static contact 4 is connected to the wire 8 through the epoxy 6.

Preferably, shell 1 one end is equipped with the opening, and the inside top of shell 1 does not open one side and is equipped with a mounting groove, static contact 4 sets up in the mounting groove.

The specific implementation method comprises the following steps: the utility model discloses be connected between movable contact 2 and the static contact 4 when normal use, under overheated or the overloaded condition, utilize bimetallic strip expend with heat and contract with cold's former lining, bimetallic strip 3 takes place distortion, and becomes and leads to the disconnection between movable contact 2 and the static contact 4.

When the protector is cooled to the reset temperature, the protector can be automatically reset without external force (push or pull) and can be restored to the initial state.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the scope of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A TB02 series temperature limiter is characterized by comprising a shell (1), a movable contact (2), a bimetallic strip (3), a static contact (4), a fixed seat (5), epoxy resin (6), a movable contact terminal (7) and a lead (8); one side of the bimetallic strip (3) is provided with a movable contact (2); the static contact (4) is arranged at the top end in the shell (1), and the static contact (4) is tightly attached to the movable contact (2); the fixed seat (5) is arranged between the bimetallic strip (3) and the static contact piece (4); epoxy resin (6) is arranged between the lead (8) and the fixed seat (5); the movable contact piece terminal (7) is connected with a lead.

2. A temperature limiter of the TB02 series according to claim 1, wherein the bimetal (3) has a geometrical shape, and the bimetal (3) has a shape that changes according to the on-off state of the temperature limiter.

3. A temperature limiter of the TB02 series according to claim 1, wherein the ground inside the casing (1) is provided with a platform on which the metal sheet (3) is arranged.

4. A TB02 series temperature limiter according to claim 1, wherein the static contact (4) is connected to the conducting wire (8) through epoxy (6).

5. The TB02 series temperature limiter of claim 1, wherein, the shell (1) is provided with an opening at one end, a mounting groove is provided at the side of the shell (1) with no opening at the top, and the static contact (4) is arranged in the mounting groove.

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