Current temperature type standard load thermal protector with long service life

Abstract

The utility model discloses a current temperature type standard load thermal protector with long service life, which relates to the technical field of thermal protectors and comprises an outer shell. A movable contact piece clamping frame is fixed on the inner side of the outer shell through a bolt, a movable contact piece is buckled on the movable contact piece clamping frame, and a metal connecting piece is connected below the movable contact piece in a pressing mode. The other end of the metal connecting piece is connected between the static contact piece and the static contact piece bearing plate in a pressing mode, the static contact piece is connected with two wires in a matched mode. According to the utility model, because the two ends of the metal connecting sheet are crimped by the passive contact sheet and the static contact sheet, the metal connecting sheet can be bent under high temperature and overlarge current, so that the metal connecting sheet is easy to pull out and cannot be hooked by a rivet, the breaking effect is ensured, and a lead is conveniently connected in an installation line.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of thermal protectors, in particular to a current-temperature type standard load thermal protector with a long service life. Background Art

[0002] The thermal protector is a combination of two different alloys. When current passes through it, it will generate heat. Due to the different thermal expansion coefficients of the two different alloys, the alloys are bound to bend in one direction, and the contacts will be separated, and the power will be cut off. The bending speed is proportional to the current passing through. This protects the electrical equipment.

[0003] When a traditional thermal protector is used outdoors, the metal connecting piece on the inside is prone to heat up, which can easily cause high temperature inside and cause the metal connecting piece to heat up and overload. Secondly, the traditional riveted metal connecting piece is not easy to come out after bending, and may even stick together, resulting in an inability to provide complete protection. For this reason, we provide a current-temperature type standard load thermal protector with a long service life. The two ends of the metal connecting piece are crimped with the moving contact piece and the static contact piece. After bending, the crimped metal connecting piece can be pulled out to prevent incomplete disconnection. Secondly, a temperature alarm is provided, which can detect ultra-high temperatures outdoors in time to avoid excessive load on the metal connecting piece and causing inaccuracies. Utility Model Content

[0004] The utility model aims to provide a current-temperature type standard load thermal protector with a long service life, so as to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A current-temperature type standard load thermal protector with a long service life comprises an outer shell; a moving contact piece clamping frame is fixed to the inner side of the outer shell by bolts, a moving contact piece is buckled on the moving contact piece clamping frame, and a metal connecting piece is crimped under the moving contact piece; the other end of the metal connecting piece is crimped between a stationary contact piece and a stationary contact piece bearing plate, a wire is connected to the stationary contact piece, and two wires are provided.

[0007] As a further technical solution of the utility model, there are two static contact piece bearing plates, and the two are arranged opposite to each other. Secondly, each static contact piece bearing plate is movably connected to the static contact piece bearing plate through a rotating shaft; the static contact pieces are respectively connected to the static contact piece bearing plates through static contact piece rivets.

[0008] As a further technical solution of the utility model, a circular hole is opened on the outer shell for easy passage of the wire, a rear cover is buckled on one side of the opening of the outer shell, and protruding ears are arranged on both sides of the outer shell to fix the rear cover.

[0009] As a further technical solution of the utility model, a high temperature alarm is fixed to the inner side of the outer shell by bolts.

[0010] As a further technical solution of the utility model, a plurality of heat dissipation holes are provided on the top and the bottom of the outer shell.

[0011] As a further technical solution of the utility model, a support leg is fixed to the bottom of the outer shell by bolts, and the support leg is fixed to the mounting carrier by bolts.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, since the passive contact pieces and the static contact pieces at both ends of the metal connecting piece are crimped, they can be bent when the temperature is high and the current is too large, so that the metal connecting piece can be easily pulled out and will not be hooked by the rivet, thereby ensuring the breaking effect and conveniently connecting the wire in the installation line;

[0014] The utility model inserts two stationary contact piece bearing plates through stationary contact piece rivets, and relies on the gravity of the stationary contact piece itself to flatten the two stationary contact piece bearing plates and clamp the stationary contact piece, so that the metal connecting piece can be replaced and reused;

[0015] The utility model has a rear cover that plays a sealing role, and the protruding ears on both sides facilitate the locking of the outer shell and the rear cover. The high temperature alarm inside can monitor the temperature inside and give an alarm in time to avoid the situation where high temperature increases the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 This utility model Figure 1 Schematic diagram from another perspective.

[0018] Figure 3 This utility model Figure 1 Schematic diagram of the internal structure.

[0019] Figure 4 This utility model Figure 3 Schematic diagram from another perspective.

[0020] In the figure: 1-outer shell, 2-raised ear, 3-back cover, 4-heat dissipation hole, 5-wire, 6-moving contact piece clamping frame, 7-moving contact piece, 8-metal connecting piece, 9-stationary contact piece bearing plate, 10-flip frame, 11-stationary contact piece rivet, 12-stationary contact piece, 13-support leg, 14-high temperature alarm. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 In an embodiment of the utility model, a current-temperature type standard load thermal protector with a long service life includes an outer shell 1; a moving contact piece clamping frame 6 is fixed to the inner side of the outer shell 1 by bolts, a moving contact piece 7 is buckled on the moving contact piece clamping frame 6, and a metal connecting piece 8 is crimped under the moving contact piece 7; the other end of the metal connecting piece 8 is crimped between a stationary contact piece 12 and a stationary contact piece bearing plate 9, a wire 5 is connected to the stationary contact piece 12, and two wires 5 are provided.

[0023] By adopting the above technical solution, since the passive contact piece 7 and the static contact piece 12 at both ends of the metal connecting piece 8 are crimped, they can bend when the temperature is high and the current is too large, so that the metal connecting piece 8 can be easily pulled out and will not be hooked by the rivet, thereby ensuring the disconnection effect, and the wire 5 can be conveniently connected to the installation line.

[0024] In this embodiment, two static contact piece supporting plates 9 are provided, and the two are arranged opposite to each other. Secondly, each static contact piece supporting plate 9 is movably connected to the static contact piece supporting plate 9 through a rotating shaft; the static contact pieces 12 are respectively plugged into the static contact piece supporting plates 9 through static contact piece rivets 11.

[0025] By adopting the above technical solution, the two stationary contact sheet carrier plates 9 are plugged in through the stationary contact sheet rivet 11, and the two stationary contact sheet carrier plates 9 are flattened and the stationary contact sheet 12 is clamped by the gravity of the stationary contact sheet 12 itself, so that the metal connecting sheet 8 can be replaced and reused.

[0026] In this embodiment, a circular hole is opened on the outer shell 1 for the wire 5 to pass through, a back cover 3 is buckled on one side of the opening of the outer shell 1, and protruding ears 2 are provided on both sides of the outer shell 1 to fix the back cover.

[0027] Furthermore, a high temperature alarm 14 is fixed to the inner side of the outer shell 1 by bolts.

[0028] By adopting the above technical solution, the back cover 3 plays a sealing role, and the protruding ears 2 on both sides facilitate the locking of the outer shell 1 and the back cover 3. The high temperature alarm 14 inside can monitor the internal temperature and alarm in time to avoid the situation where high temperature increases the load.

[0029] In this embodiment, a plurality of heat dissipation holes 4 are provided on the top and the bottom of the outer shell 1 .

[0030] Furthermore, a support leg 13 is fixed to the bottom of the outer shell 1 by bolts, and the support leg 13 is fixed to the mounting carrier by bolts.

[0031] By adopting the above technical solution, the heat dissipation holes 4 can dissipate the temperature inside the outer shell 1 , and the legs 13 facilitate the installation of the outer shell 1 .

[0032] The working principle of the utility model is as follows: the heat dissipation holes 4 can dissipate the temperature inside the outer shell 1, and the legs 13 facilitate the installation of the outer shell 1; since the passive contacts 7 and the static contacts 12 at both ends of the metal connecting piece 8 are crimped, they can be bent when the temperature is high and the current is too large, so that the metal connecting piece 8 is easy to pull out and will not be hooked by the rivets, thereby ensuring the disconnection effect, and the wire 5 is conveniently connected to the installation circuit; the two static contact piece bearing plates 9 are plugged in through the static contact piece rivet 11, and the two static contact piece bearing plates 9 are flattened by the gravity of the static contact piece 12 itself to clamp the static contact piece 12, so that the metal connecting piece 8 can be replaced and reused; the back cover 3 plays a sealing role, and the raised ears 2 on both sides facilitate the locking of the outer shell 1 and the back cover 3, and the high temperature alarm 14 on the inside can monitor the temperature inside and alarm in time to avoid the situation where high temperature increases the load.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A current-temperature type standard load thermal protector with a long service life, characterized in that: The invention comprises an outer shell (1); a movable contact piece clamping frame (6) is fixed to the inner side of the outer shell (1) by means of bolts; a movable contact piece (7) is buckled on the movable contact piece clamping frame (6); and a metal connecting piece (8) is crimped under the movable contact piece (7); the other end of the metal connecting piece (8) is crimped between a stationary contact piece (12) and a stationary contact piece bearing plate (9); a wire (5) is cooperatively connected to the stationary contact piece (12), and two wires (5) are provided.

2. A current-temperature type standard load thermal protector with a long service life according to claim 1, characterized in that: The static contact piece carrier plates (9) are provided with two, and the two are arranged opposite to each other. Secondly, each static contact piece carrier plate (9) is movably connected to the static contact piece carrier plate (9) via a rotating shaft; the static contact pieces (12) are respectively plugged into the static contact piece carrier plates (9) via static contact piece rivets (11).

3. A current-temperature type standard load thermal protector with a long service life according to claim 1, characterized in that: The outer shell (1) is provided with a circular hole for facilitating the wire (5) to pass through, a rear cover (3) is buckled on one side of the opening of the outer shell (1), and protruding ears (2) are provided on both sides of the outer shell (1), and the rear cover is fixed by the protruding ears (2).

4. The current-temperature type standard load thermal protector with a long service life according to claim 1, characterized in that: A high temperature alarm (14) is fixed to the inner side of the outer shell (1) by means of bolts.

5. The current-temperature type standard load thermal protector with long service life according to claim 1, characterized in that: The top and bottom of the outer shell (1) are both provided with a plurality of heat dissipation holes (4).

6. A current-temperature type standard load thermal protector with a long service life according to claim 1, characterized in that: A support leg (13) is fixed to the bottom of the outer shell (1) via bolts, and the support leg (13) is fixed to the mounting carrier via bolts.

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