CN216054340U - Contact structure and anti-corrosion switch provided with same - Google Patents

Abstract

The utility model discloses a contact structure, which comprises a movable contact piece, a static contact piece, a supporting piece and a push rod, wherein the movable contact piece is connected with the static contact piece through a bolt; the movable contact piece slides on the movable contact piece through the ejector rod, so that the movable contact piece circumferentially rotates on the supporting piece; the movable contact spring is in adaptive connection with the semi-cylindrical protrusion arranged at the upper end of the support piece through the semicircular arc-shaped notch, so that the movable contact spring rotates along the axial direction of the protrusion. The ejector pin is contradicted with the movable contact piece all the time, so make the phenomenon that the movable contact piece can not the drunkenness, simultaneously the movable contact piece circumference rotates on support piece so guarantee that the movable contact piece can not appear the condition of offset with support piece, reduce the production of spark-erosion, effectively solved because of the phenomenon of appearing drawing the arc between the contact, and lead to electrocuteeing the problem of being ablated. The utility model also discloses an anti-corrosion switch provided with the structure, and by adopting the scheme, the service life of the switch can be prolonged, the heating speed of the switch is reduced, and especially, the electric corrosion of the LED lamp for illumination on the switch is effectively reduced.

Description

Contact structure and anti-corrosion switch provided with same

Technical Field

The utility model relates to the technical field of electrical switches, in particular to a contact structure and an anti-corrosion switch provided with the contact structure.

Background

The existing contact structure can generate an arc discharge phenomenon in the process of realizing the opening and closing of a circuit, so that the contact position of a movable contact and a static contact is seriously ablated, and the service life of the contact structure is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a contact structure, which reduces the generation of electric arc to prolong the service life of the contact structure.

Another object of the present invention is to provide a switch with electrical corrosion resistance, which is installed with a contact structure as described above, so as to achieve long-term use of the switch, and further prolong the service life of the switch.

To achieve the first purpose, the utility model provides the following technical scheme: a contact structure comprises a movable contact piece and static contact pieces positioned at two ends of the movable contact piece; the contact structure also comprises a supporting piece for supporting the movable contact piece and a mandril for pushing the movable contact piece to work; the moving contact piece slides on the moving contact piece through the ejector rod, so that the moving contact piece rotates on the supporting piece in a circumferential mode.

As a preferred technical scheme of the utility model: the movable contact piece is connected with a bulge arranged at the upper end of the supporting piece in a matched manner through a notch arranged on the movable contact piece, so that the movable contact piece can axially rotate along the bulge.

As a preferred technical scheme of the utility model: the cross sections of the notch and the bulge are semicircular.

As a preferred technical scheme of the utility model: the middle part of the movable contact piece is also provided with a sliding groove, and the sliding groove is used for guiding the ejector rod to slide.

As a preferred technical scheme of the utility model: and two ends of the movable contact piece are in contact with a second contact point arranged on the static contact piece through a first contact point arranged on the movable contact piece.

As a preferred technical scheme of the utility model: the two movable contact pieces are symmetrically arranged on two sides of the supporting piece.

As a preferred technical scheme of the utility model: the first contact and the second contact are both hemispherical.

To achieve another purpose, the utility model provides the following technical scheme: an anti-corrosion switch comprises a base used for assembling the contact structure together, and is connected with a bottom shell through the shell, so that the contact structure is fixed in the bottom shell and the shell; the shell is also provided with a swinging block, and the swinging block rotates on the shell to promote the ejector rod to slide on the movable contact piece.

By adopting the technical scheme, the utility model has the beneficial effects that: the ejector rod slides on the movable contact piece, so that the movable contact piece circumferentially rotates on the support piece, the moving phenomenon of the movable contact piece cannot occur, the ejector rod is always abutted against the movable contact piece, the situation that the movable contact piece and the support piece cannot shift is further ensured, the generation of electric spark is reduced, and the problem that the contact point is ablated due to the arc-drawing phenomenon between the movable contact piece and the contact point of the static contact piece is effectively solved.

Drawings

FIG. 1 is a schematic diagram of a main structure of a contact structure according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of one side of the movable contact spring of the present invention;

FIG. 4 is another schematic structural diagram of the movable contact spring of the present invention;

fig. 5 is a schematic diagram of a switch with a contact arrangement installed.

In the figure: 1. a static contact piece; 2. a support member; 3. a second contact; 4. a first contact; 5. a movable contact spring; 6. a protrusion; 7. swinging a block; 8. a contact structure; 9. a base; 10. a bottom case; 11. a top rod; 12. a housing; 13. a chute; 14. a notch.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "upper surface", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-5, an embodiment of the present invention is shown: referring specifically to fig. 1-4, a contact structure, the contact structure 8 includes a moving contact 5, and static contacts 1 located at two ends of the moving contact 5; the contact structure 8 further comprises a supporting piece 2 for supporting the movable contact piece 5 and a mandril 11 for pushing the movable contact piece 5 to work; the moving contact piece 5 slides on the moving contact piece 5 through the ejector rod 11, so that the moving contact piece 5 rotates on the circumference of the supporting piece 2.

The ejector rod 11 slides on the movable contact piece 5, so that the movable contact piece 5 rotates at the upper end circumference of the support piece 2, the moving phenomenon of the movable contact piece 5 cannot occur, the ejector rod 11 is always abutted to the movable contact piece 5, and the condition that the movable contact piece 5 and the support piece 2 cannot deviate in position is further ensured, the generation of electric spark is reduced, and the problem that the contact points are ablated due to the arc-drawing phenomenon between the movable contact piece 5 and the contact points of the static contact piece 1 is effectively solved.

Furthermore, the movable contact piece 5 is in adaptive connection with the protrusion 6 arranged at the upper end of the support piece 2 through the notch 14, so that the movable contact piece 5 axially rotates along the protrusion 6, and through the scheme, the protrusion 6 is in adaptive connection with the notch 14 while the movable contact piece 5 and the support piece 2 realize circumferential rotation, and the problem that the movable contact piece 5 falls off from the support piece 2 can be avoided, so that stable connection between the movable contact piece 5 and the support piece 2 is further ensured, and the arc discharge phenomenon is effectively avoided.

Furthermore, the cross sections of the notch 14 and the protrusion 6 are semicircular, so that the rotation between the notch and the protrusion is smoother, and the moving contact piece 5 is further prevented from moving during rotation.

Because the middle part of the movable contact piece 5 is also provided with the sliding groove 13, and the sliding groove 13 is used for guiding the ejector rod 11 to slide, the sliding of the ejector rod 11 is limited, so that the ejector rod 11 can be ensured to slide in the sliding groove 13 all the time, and the movable contact piece 5 is reliably abutted against the upper end of the support piece 2, so that the support piece 2 and the movable contact piece 5 rotate relatively more stably and smoothly.

Furthermore, both ends of the movable contact piece 5 are in contact with the second contact 3 arranged on the static contact piece 1 through the first contact 4 arranged on the movable contact piece, and the first contact 4 and the second contact 3 are made of silver materials, so that the electric corrosion phenomenon during contact of the contacts is further reduced.

Because the two movable contact pieces 5 are symmetrically arranged on the two sides of the support piece 2, the movable contact pieces 5 can rotate for the same distance in two directions, and the first contact 4 on the movable contact piece 5 can be reliably contacted with the second contact 3 on the static contact piece 1; the first contact 4 and the second contact 3 are both hemispherical, so that the two contacts can be in point contact when in contact.

The utility model also provides an embodiment: as shown in fig. 5: a kind of anti-corrosion switch, including the base 9 used for assembling a kind of contact structure as stated above together, and connect with bottom shell 10 equipped with through the body 12 equipped, fix the said contact structure 8 in the said bottom shell 10 and said body 12; the shell 12 is further provided with a swing block 7, and the push rod 11 is promoted to slide on the movable contact piece 5 through the rotation of the swing block 7 on the shell 12.

To sum up, when the swing block 7 is driven, the spring mounted on the ejector rod 11 and the ejector rod 11 rotate around the axis of the swing block 7, and the ejector rod 11 and the movable contact piece 5 slide relatively, so that the movable contact piece 5 and the support piece 2 do not have a play phenomenon, and further, the electric spark is avoided, and the probability of arc discharge between contacts can be reduced.

Therefore, the service life of the switch can be prolonged, the heating speed of the switch is reduced, and particularly, the electric corrosion of the LED lamp for illumination to the switch is effectively reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims (7)

1. A contact structure, characterized by: the contact structure (8) comprises a movable contact piece (5) and static contact pieces (1) positioned at two ends of the movable contact piece (5);

the contact structure (8) further comprises a supporting piece (2) for supporting the movable contact piece (5) and a push rod (11) for pushing the movable contact piece (5) to work;

the moving contact piece (5) slides on the moving contact piece (5) through the ejector rod (11) so as to enable the moving contact piece (5) to rotate on the circumference of the supporting piece (2).

2. A contact structure according to claim 1, wherein: the movable contact piece (5) is in adaptive connection with a bulge (6) arranged at the upper end of the support piece (2) through a notch (14) arranged on the movable contact piece, so that the movable contact piece (5) can axially rotate along the bulge (6).

3. A contact structure according to claim 2, wherein: the cross sections of the notch (14) and the protrusion (6) are semicircular.

4. A contact structure according to claim 1, 2 or 3, wherein: the middle part of the movable contact piece (5) is also provided with a sliding groove (13), and the sliding groove (13) is used for guiding the ejector rod (11) to slide.

5. A contact structure according to claim 4, wherein: two ends of the movable contact piece (5) are in contact with a second contact (3) arranged on the static contact piece (1) through a first contact (4) arranged on the movable contact piece, and the two movable contact pieces (5) are symmetrically arranged on two sides of the supporting piece (2).

6. A contact structure according to claim 5, wherein: the first contact (4) and the second contact (3) are both hemispherical.

7. An anti-corrosion switch, comprising: comprising a base (9) for assembling together a contact structure according to any one of claims 1 to 6, and being connected to a bottom shell (10) provided with a housing (12), said contact structure (8) being fixed in said bottom shell (10) and in said housing (12);

the shell (12) is also provided with a swinging block (7), and the swinging block (7) rotates on the shell (12) to urge the ejector rod (11) to slide on the movable contact piece (5).

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