CN216562939U

CN216562939U - Tensile-resistant thermosensitive switch

Info

Publication number: CN216562939U
Application number: CN202220081728.1U
Authority: CN
Inventors: 唐成刚
Original assignee: Dandong Keliang Electron Co ltd
Current assignee: Dandong Keliang Electron Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-05-17
Anticipated expiration: 2032-01-13

Abstract

The utility model discloses a tensile-resistant thermosensitive switch which comprises a shell and a lead, wherein a groove is formed in the front side of the shell, a spring piece is installed on the rear side of an inner cavity of the groove, a movable contact is installed on the front side of the spring piece, a bimetallic strip is installed on the front side of the movable contact, an insulating film is installed on the front side of the bimetallic strip, a static contact is installed on the front side of the insulating film, and an upper cover is installed on the front side of the static contact. The tensile resistance thermosensitive switch increases the welding area in a shell side welding mode, solves the phenomenon of overlarge short circuit of the soldering tin amount, and solves the problems of small welding area and small product tensile resistance, thereby prolonging the service life of the device.

Description

Tensile-resistant thermosensitive switch

Technical Field

The utility model relates to the technical field of a thermal switch, in particular to a tensile-resistant thermal switch.

Background

The embedded thermal protector for the original motor is made of materials such as a bimetallic strip, a spring piece, a movable contact, a fixed contact and the like, and lead-out wires are welded on the same plane.

However, the existing product is installed at the end part of the motor winding, so that a worker can inevitably pull the lead wires forcefully in the operation process, and the lead wires welded on the edge of the shell are easy to be detached in the pulling process.

Disclosure of Invention

The utility model aims to provide a tensile-resistant thermal switch, which solves the problems that in the prior art, a worker inevitably pulls a lead wire hard in the operation process, and the lead wire welded on the edge of a shell is easy to be detached in the pulling process.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a stretching resistance thermal switch, includes shell and lead wire, the front side of shell is opened and is equipped with the recess, the spring leaf is installed to the inner chamber rear side of recess, the movable contact is installed to the front side of spring leaf, bimetallic strip is installed to the front side of movable contact, the insulating film is installed to the front side of bimetallic strip, the stationary contact is installed to the front side of insulating film, the upper cover is installed to the front side of stationary contact.

Preferably, the leads are respectively mounted on the upper cover containing the stationary contact and the side surface of the housing.

Preferably, the shape of the insulating film is a shape of a Chinese character 'ao'.

Preferably, the fixed contact and the movable contact are located on the same horizontal line.

Compared with the prior art, the utility model has the beneficial effects that: this stretching resistance thermal switch through shell side welded mode, increases the welding area, solves the phenomenon of the too big short circuit of soldering tin volume, has also solved simultaneously that welding area is little, the little problem of product stretching resistance to the life of device has been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the structure of FIG. 1;

fig. 3 is a front sectional structural schematic view of the housing of fig. 2.

In the figure: 1. the device comprises a shell, 2, a lead, 3, an upper cover, 4, a groove, 5, a spring piece, 6, a movable contact, 7, a bimetallic strip, 8, an insulating film, 9 and a fixed contact.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a tensile force heat-sensitive switch comprises a shell 1 and a lead 2, wherein a groove 4 is formed in the front side of the shell 1, a spring piece 5 is installed on the rear side of an inner cavity of the groove 4, a movable contact 6 is installed on the front side of the spring piece 5, a bimetallic strip 7 is installed on the front side of the movable contact 6, an insulating film 8 is installed on the front side of the bimetallic strip 7, a fixed contact 9 is installed on the front side of the insulating film 8, and an upper cover 3 is installed on the front side of the fixed contact 9.

Preferably, the lead wires 2 are respectively mounted on the upper cover 3 containing the stationary contact 9 and the side surface of the housing, so that the welding area is increased, and the phenomenon of short circuit caused by excessive soldering tin amount is solved.

Preferably, the shape of the insulating film 8 is a "concave" shape, and the coverage area of the insulating film 8 can be increased by the "concave" shape structure.

Preferably, the stationary contact 9 and the movable contact 6 are located at the same level, ensuring that the device operates properly.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

During manufacturing, the spring piece 5, the movable contact 6, the bimetallic strip 7, the limited imine insulating film 8 and the static contact 9 are assembled in the shell 1 according to the transfer sequence of a product, the shell 1 is pressed by a sealing machine, and finally the lead is welded on the upper cover 3 containing the static contact 9 and the side surface of the shell 1.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "two ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "snap" or "coupling" or "snap" or "set" or "mount" are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A tension resistant thermal switch comprising a housing (1) and a lead (2), characterized in that: the improved spring piece is characterized in that a groove (4) is formed in the front side of the shell (1), a spring piece (5) is installed on the rear side of an inner cavity of the groove (4), a movable contact (6) is installed on the front side of the spring piece (5), a bimetallic strip (7) is installed on the front side of the movable contact (6), an insulating film (8) is installed on the front side of the bimetallic strip (7), a fixed contact (9) is installed on the front side of the insulating film (8), and an upper cover (3) is installed on the front side of the fixed contact (9).

2. A tension resistant thermal switch as defined in claim 1 wherein: the lead wires (2) are respectively arranged on the upper cover (3) containing the static contact (9) and the side surface of the shell.

3. A tension resistant thermal switch as defined in claim 1 wherein: the shape of the insulating film (8) is concave.

4. A tension resistant thermal switch as defined in claim 1 wherein: the fixed contact (9) and the movable contact (6) are positioned on the same horizontal line.