Moving contact welded with lead

Abstract

A moving contact welded with a wire comprises a moving contact body with a contact and the wire, the moving contact body is a sheet-shaped component and is bent to form an insertion part, an elastic part and a contact connecting part, the insertion part enables the moving contact body to be installed on an electrical element, the elastic part is located between the insertion part and the contact connecting part and is arranged in an inclined mode, and the contact connecting part is connected with the elastic part. The contact connecting part is provided with a positioning node used for limiting the final position of the contact at the contact connecting part, and when the positioning node is combined with the contact, part of the contact is allowed to pass through and extend to the lower part of the contact connecting part to be welded with the wire. The beneficial effects of the utility model lie in that the contact is directly welded with the lead, so that the moving contact body does not bear current, the requirement on the material of the moving contact body is not too high, the strength is ensured, the cost is reduced, and the heat generated in the working process is reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to a moving contact piece welded with a conducting wire. Background Art

[0002] The welding of the moving contact and the wire is to achieve the best power-on effect through atomic-level bonding, so that the two conductors cannot be tightly combined due to the common connection method, forming a tiny gap that causes air breakdown, thus forming the so-called arc.

[0003] Refer to the attached Figure 5 The existing wire is welded on the moving contact piece and has no direct connection with the contact. It is connected to the contact through the moving contact piece. This requires that the moving contact piece must be made of copper, which results in the moving contact piece being insufficiently hard. When the wire is welded to the moving contact piece, the moving contact piece will become soft due to heat and will be deformed over time. The product is prone to failure, affecting its use. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides a movable contact piece welded with a wire to solve the above-mentioned problems.

[0005] The utility model adopts a technical solution to solve its technical problems: the movable contact piece welded with a wire comprises a movable contact piece body with a contact, and a wire. The movable contact piece body is a sheet-like component, which is bent to form a plug-in portion, an elastic portion, and a contact connecting portion. The plug-in portion enables the movable contact piece body to be installed on the electrical component. The elastic portion is located between the plug-in portion and the contact connecting portion and is inclined. A positioning node is provided on the contact connecting portion to limit the final position of the contact in the contact connecting portion. When the positioning node is combined with the contact, part of the contact is allowed to pass through and extend to the bottom of the contact connecting portion to be welded with the wire.

[0006] To be further improved, the positioning node includes an enclosing wall formed on the contact connecting portion, and a passing space defined within the enclosing wall and allowing part of the contact to pass through, when the contact passes through the passing space, part of the contact is covered, and the covered part of the contact is in contact with the enclosing wall.

[0007] According to further improvement, the contact includes a contact body and an extension body extending from the contact body and passing through the space, the contact body contacts the contact of the stationary contact piece, and the extension body is welded to the wire.

[0008] To be further improved, the enclosed wall is divided into a sliding portion and a locking portion along the assembly guide, and the extension body and the sliding portion are clearance-fitted, and the locking portion is interference-fitted.

[0009] Further improvement, the matching clearance between the enclosing wall and the extension body is gradually reduced along the assembly guide.

[0010] Further improvement, the moving contact piece body is made of iron material.

[0011] The beneficial effects of the utility model are:

[0012] The utility model allows the contact to be directly welded to the wire, so that the movable contact piece body does not carry current, and the material requirements for the movable contact piece body are not so high, as long as the strength is guaranteed, thereby reducing costs and also reducing the heat generated during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the full cross-section structure of the utility model;

[0016] Figure 4 For this utility model Figure 3 A partial enlarged schematic diagram of part A;

[0017] Figure 5 It is a schematic diagram of the prior art mentioned in the background technology of the present utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Referring to the accompanying drawings: This movable contact piece with a wire welded thereon comprises a movable contact piece body 2 having a contact 1, and a wire 3. The movable contact piece body 2 is a sheet-like component, which is bent to form a plug-in portion 21, an elastic portion 22, and a contact connecting portion 23. The plug-in portion 21 enables the movable contact piece body 2 to be installed on the electrical component. The elastic portion 22 is located between the plug-in portion 21 and the contact connecting portion 23 and is arranged at an angle. A positioning node 4 is provided on the contact connecting portion 23 to limit the final position of the contact 1 in the contact connecting portion 23. When the positioning node 4 is combined with the contact 1, a portion of the contact 1 is allowed to pass through and extend to the bottom of the contact connecting portion 23 to be welded to the wire 3. The principle of the utility model is that the positioning node 4 can not only quickly determine the final position of the contact 1 on the moving contact piece body 2, but also allow part of the contact 1 to pass through, and the passed part is used to be welded with the wire 3. In this way, the wire 3 is directly welded to the contact 1, so that the moving contact piece body 2 does not carry current, and the material requirements for the moving contact piece body 2 are not so high, as long as the strength is guaranteed, and the heat generated during operation is also reduced.

[0020] The positioning node 4 includes an enclosing wall 41 formed on the contact connection portion 23, and a passing space 42 defined within the enclosing wall 41 and allowing part of the contact 1 to pass through. When the contact 1 passes through the passing space 42, part of the contact 1 is covered, and the covered part of the contact 1 contacts the enclosing wall 41, so that the contact 1 can pass through, and the part placed in the passing space 42 can contact the enclosing wall 41, and the contact can produce a certain degree of tightness, that is, to prevent the contact 1 from leaving the positioning node 4. At the same time, when the moving contact piece body 1 and the static contact piece are arranged in the electrical component, the moving contact piece body 1 is located at the bottom and the static contact piece is located at the top, so that when the two are in contact, the moving contact piece body 1 belongs to the part pressed by the static contact piece, so that the contact 1 will not leave the positioning node 4 under the action of tightness. In the implementation case, the positioning node 4 is a through hole penetrating the contact connection portion 23, the hole wall of the through hole forms the enclosing wall 41, and the space through which the through hole allows the contact 1 to pass forms the passing space 42.

[0021] The contact 1 includes a contact body 11 and an extension body 12 extending from the contact body 11 and passing through the through space 42. The contact body 11 contacts the contact of the stationary contact piece, and the extension body 12 is welded to the wire 3. Such an arrangement enables the contact 1 to have both a part (contact body 11) in contact with the contact of the stationary contact piece and a part welded to the wire 3. The contact body 11 and the extension body 12 are both columnar in configuration, and the outer diameter of the contact body 11 is greater than the outer diameter of the extension body 12. In this way, the extension body 12 can play a positioning effect when passing through the through space 42, and at the same time, the contact 1 also has a sufficient contact surface.

[0022] The enclosing wall 41 is divided into a sliding portion 41-a and a locking portion 41-b along the assembly guide. The extension body 12 and the sliding portion 41-a are clearance fit, and the locking portion 41-b is interference fit. The sliding portion 41-a allows the extension body 12 to move in the positioning node 4, so that the bottom surface of the contact body 11 can contact the top surface of the contact connecting portion 23, so that when the contact 1 is locked, its setting stability can be guaranteed. The locking portion 41-b allows the contact 1 to be locked in the positioning node 4 to complete the assembly connection between the contact 1 and the movable contact piece body 2. No additional parts such as screws are required, and it is suitable for quick and convenient assembly.

[0023] The matching clearance between the enclosing wall 41 and the extension body 12 gradually decreases along the assembly guide, and the change of the groove width is linear, so that the insertion process is relatively smooth and the jamming phenomenon in the middle of the connection assembly can be avoided.

[0024] The moving contact piece body 2 is made of iron material. The iron material makes the moving contact piece body 2 stronger. Its hardness is greater than that of copper. In this way, it will not be deformed by heat during welding, so that the performance quality can be improved. The products using the moving contact piece body 2 are not prone to failure and also save costs.

[0025] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A movable contact piece welded with a wire, comprising a movable contact piece body (2) having a contact (1), and a wire (3), characterized in that: The movable contact piece body (2) is a sheet-like component, which is bent to form a plug-in portion (21), an elastic portion (22), and a contact connecting portion (23); the plug-in portion (21) enables the movable contact piece body (2) to be installed on an electrical component; the elastic portion (22) is located between the plug-in portion (21) and the contact connecting portion (23) and is arranged at an angle; a positioning node (4) is provided on the contact connecting portion (23) for limiting the final position of the contact (1) on the contact connecting portion (23); when the positioning node (4) is combined with the contact (1), a portion of the contact (1) is allowed to pass through and extend to the bottom of the contact connecting portion (23) to be welded to the wire (3).

2. The movable contact piece welded with a wire according to claim 1, characterized in that: The positioning node (4) comprises an enclosing wall (41) formed on the contact connecting portion (23), and a passing space (42) defined within the enclosing wall (41) and allowing part of the contact (1) to pass through; when the contact (1) passes through the passing space (42), part of the contact (1) is covered, and the covered part of the contact (1) is in contact with the enclosing wall (41).

3. The movable contact piece welded with a wire according to claim 2, characterized in that: The contact (1) comprises a contact body (11) and an extension body (12) extending from the contact body (11) and passing through the passing space (42); the contact body (11) contacts the contact of the stationary contact piece, and the extension body (12) is welded to the wire (3).

4. The movable contact piece welded with a wire according to claim 3, characterized in that: The enclosing wall (41) is divided into a sliding portion (41-a) and a locking portion (41-b) along the assembly guide, and the extension body (12) and the sliding portion (41-a) are clearance-fitted, and the locking portion (41-b) is interference-fitted.

5. The movable contact piece welded with a wire according to claim 4, characterized in that: The matching clearance between the enclosing wall (41) and the extending body (12) gradually decreases along the assembly guide.

6. The movable contact piece welded with a wire according to claim 1, characterized in that: The movable contact piece body (2) is made of iron material.

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