CN203150481U

CN203150481U - Relay

Info

Publication number: CN203150481U
Application number: CN 201320135238
Authority: CN
Inventors: 付振兴; 张晓宁; 胡协力
Original assignee: Tyco Electronics Shenzhen Co Ltd
Current assignee: Tyco Electronics Shenzhen Co Ltd
Priority date: 2013-03-22
Filing date: 2013-03-22
Publication date: 2013-08-21
Anticipated expiration: 2023-03-22

Abstract

The utility model discloses a relay. The relay is characterized by comprising a relay body for controlling the connection and disconnection of a main circuit; and a shield housing for shielding the relay body from external magnetic fields, wherein the relay is arranged inside the shield housing. According to the utility model, the relay is additionally provided with the shield housing, so that the interference of external magnetic fields on the relay body is prevented; and the shield housing is provided with a first notch and a second notch, or a lower edge of the shield housing has a certain distance from a lower edge of a shell, so that two connection terminals or two coil terminals are prevented from being too close to the shield housing and being conducted, thereby preventing short circuit. The relay provided by the utility model is particularly suitable to be used in intelligent electricity meters.

Description

Relay

Technical field

The utility model relates to a kind of relay, especially the magnetic latching relay used of ammeter.

Background technology

Relay is the electric control device of using always.The operation principle of relay is to utilize the little electric current in the coil to generate an electromagnetic field, and the action of control high-current switch is with connection or the disconnection of control main circuit.Wherein a kind of relay is magnetic latching relay.The operation principle of magnetic latching relay is to utilize relay magnetic force that built-in permanent magnet produces to keep the state that opens or closes of main circuit.When the needs switching state, the electromagnetic field that utilizes the exciting current in the coil to produce is finished switching, with connection or the disconnection of control main circuit.Such relay is used in the intelligent electric meter in a large number.When intelligent electric meter was worked, if there are other magnetic fields in its surrounding enviroment, these magnetic fields can interfere with the work in the magnetic field that permanent magnet in the magnetic latching relay and coil produce, and caused relay performance to reduce even malfunctioning.

The utility model content

The purpose of this utility model is in order to overcome deficiency of the prior art, a kind of relay of maskable magnetic interference to be provided.

For realizing above purpose, the utility model is achieved through the following technical solutions:

Relay is characterized in that, comprising:

Be used for the relay body that the control main circuit is opened and closed; Described relay body comprises housing, and described housing comprises end face, bottom surface and sidewall; Described sidewall is in turn connected to form by four faces; Described end face and bottom surface are arranged at the sidewall two ends, and formation one can be held the enclosed construction of other parts; Described relay body also comprises outward extending two splicing ears and two coil terminals;

The screening can that is used for shielding relay body magnetic field in addition;

Described relay body is arranged in the screening can.

Preferably, described screening can is arranged at described housing outer surface, and around three faces of described sidewall.

Preferably, described screening can also is provided with buckle, and described buckle covers the part of the 4th face of sidewall, and is pressed on the 4th face of this sidewall.

Preferably, described screening can is arranged at described housing outer surface, and around four faces of described sidewall.

Preferably, described screening can is arranged at described housing outer surface, centers on three faces of described sidewall and covers described end face.

Preferably, the described screening can one side that covers described end face is provided with the through hole that can allow binding post or splicing ear to pass.

Preferably, described screening can is adhered to described housing outer surface.

Preferably, described screening can is provided with first breach; Described first breach is the extension of the direction to another splicing ear from one of them splicing ear.

Preferably, described first notch length is more than or equal to the distance between two splicing ears.

Preferably, described sidewall comprises upper wall, You Bi, lower wall and the Zuo Bi that connects successively; The distance of splicing ear and upper wall is less than the distance of splicing ear and lower wall; Described first breach is arranged on the one side with the described upper wall of described covering.

Preferably, described screening can is provided with second breach; Described second breach is the extension of the direction to another coil terminals from one of them coil terminals; Described second notch length is more than or equal to the distance between two coil terminals; Described sidewall comprises upper wall, You Bi, lower wall and the Zuo Bi that connects successively; The distance of coil terminals and upper wall is less than the distance of coil terminals and lower wall; Described second breach is arranged on the one side that covers described upper wall.

The lower edge of screening can preferably, and the lower edge of described housing have a distance of setting.

Preferably, described screening can extends to described bottom surface from described end face.

Preferably, described screening can is magnetic conductive shell.

Preferably, described screening can is iron shell, carbon steel shell, silicon steel shell or irony alloy shell.

Relay in the utility model has increased screening can, can effectively shield the external magnetic field to the interference of relay body.Screening can arranges first breach, second breach or screening can lower edge and a distance is set in the housing lower edge, can prevent that two splicing ears or two coil terminals are short-circuited because of the too near conducting of distance screening can.Three of screening cans can either be realized the armoured magnetic field effect around sidewall, save cost again.Buckle is set can also increase the bonding strength of screening can and relay body, avoids screening can to come off.Around sidewall and cover end face, it is tightr to make that the relay body is connected with screening can on four sides for screening can, to the protection of relay body more comprehensively.The utility model especially is fit to be used in the intelligent electric meter.

Description of drawings

Fig. 1 is the relay body construction schematic diagram in the utility model.

Fig. 2 is the utility model embodiment 1 structural representation.

Fig. 3 is that the utility model embodiment 1 is from the structural representation of another angle signal.

Fig. 4 is the utility model embodiment 2 structural representations.

Fig. 5 is that the utility model embodiment 2 is from the structural representation of another angle signal.

Fig. 6 is the utility model embodiment 3 structural representations.

Fig. 7 is that the utility model embodiment 3 is from the structural representation of another angle signal.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in detail:

Embodiment 1

As Fig. 1, Fig. 2 and shown in Figure 3, relay comprises relay body 100 and screening can 20.Relay body 100 comprises housing 10.Housing 10 comprises end face 11, bottom surface 12 and sidewall 13.Sidewall 13 is in turn connected to form by four faces, i.e. upper wall 131, right wall 132, lower wall 133 and left wall 134.End face 11 is arranged at sidewall 13 two ends with bottom surface 12, forms the tetragonal body structure that can hold other parts.Relay body 100 inside be provided with can contact and prior aries such as separable two contacts, electromagnetic assembly, armature in parts (not shown) commonly used, do not repeat them here.

Relay body 12 also comprises two splicing ears, i.e. first splicing ear 14 and second splicing ear 15.First splicing ear 14 and second splicing ear 15 run through bottom surface 12 and stretch out.The distance of first splicing ear 14 and second splicing ear 15 and upper wall 131 less than with the distance of lower wall 133, just with respect to lower wall 133, the first splicing ears 14 and second splicing ear, 15 more close upper walls 131.Splicing ear from the bottom surface 12 outward extending length decided by instructions for use.

Two splicing ears of relay body 100 also can arrange of being from the end face 11 of housing 10 or sidewall 13 and stretch out.In addition, two splicing ears also can stretch out by the different surfaces from end face 11, bottom surface 12 and the sidewall 13 of housing 10.For example, first splicing ear 14 and second splicing ear 15 can be respectively stretch out from end face 11 and the bottom surface 12 of housing 10.

Relay body 100 also comprises two coil terminals, i.e. first coil terminals 16 and second coil terminals 17.First coil terminals 16 and second coil terminals 17 run through bottom surface 12 and stretch out.The distance of first coil terminals 16 and second coil terminals 17 and upper wall 131 less than with the distance of lower wall 133.Just with respect to lower wall 133, the first coil terminals 16 and second coil terminals, 17 more close upper walls 131.Coil terminals from the bottom surface 12 outward extending length decided by instructions for use.

Relay body 100 is used for the control main circuit and opens and close, first splicing ear 14 and second splicing ear 15 are connected in the main circuit, utilize first splicing ear 14 and second splicing ear 15 be positioned at housing 10 inside two contacts contact or separate the Kai Heguan that controls main circuit.

Relay body 100 is arranged in the screening can 20.Screening can 20 is magnetic conductive shell, and it can be iron shell, carbon steel shell, silicon steel shell or alloy shell.Screening can 20 is arranged at housing 10 outer surfaces and arranges around 13 3 surfaces of sidewall, and right wall 132 parts of a buckle 23 coverings are set, and the remainder of right wall 132 is exposed to outside the screening can 20.Buckle 23 is pressed on the right wall 132, can prevent that screening can 20 from coming off from relay body 100.So the screening can 20 that arranges not only can be saved material, and weight reduction also can conveniently be installed to screening can 20 on the relay body 100.

Screening can 20 extends to described bottom surface 12 from described end face 11.The one side that screening can 20 covers upper wall 131 is provided with first breach 21.First breach 21 extends to second splicing ear 15 from first splicing ear 14, and the development length of first breach 21 is more than or equal to the distance of first splicing ear 14 and second splicing ear 15.The one side that screening can 20 covers upper wall 131 is provided with second breach 22.Second breach 22 extends to second coil terminals 17 from first coil terminals 16, and the development length of second breach 22 is more than or equal to the distance of first coil terminals 16 and second coil terminals 17.

Embodiment 2

As Fig. 4, shown in Figure 5, its difference from Example 1 is that screening can 20 is around 13 4 face settings of sidewall; Screening can 20 does not arrange second breach 22, and all the other structures are identical with embodiment 1.

Embodiment 3

As Fig. 6, shown in Figure 7, its difference from Example 1 is that screening can 20 is around 13 4 faces of sidewall and cover end face 11.The one side that screening can 20 covers end face 11 is provided with a through hole 24.Splicing ear or coil terminals can pass through hole 24 and stretch out.Screening can lower edge 24 has a distance of setting with housing lower edge 18; First breach 21 and second breach 22 are not set.Decide with the neglecting concrete instructions for use greatly of distance of housing lower edge 18 screening can lower edge 24, even can enough avoid two splicing ears not contact with screening can the time and because of the screening can connection.

Upper and lower, left and right in the utility model are relative concept.

Each technical scheme among the embodiment 1,2 and 3 can also be carried out other combination.

Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection range.

Claims

1. relay is characterized in that, comprising:

Described relay body is arranged in the screening can.

2. relay according to claim 1 is characterized in that, described screening can is arranged at described housing outer surface, and around three faces of described sidewall.

3. relay according to claim 2 is characterized in that, described screening can also is provided with buckle, and described buckle covers the part of the 4th face of sidewall, and is pressed on the 4th face of this sidewall.

4. relay according to claim 1 is characterized in that, described screening can is arranged at described housing outer surface, and around four faces of described sidewall.

5. relay according to claim 1 is characterized in that, described screening can is arranged at described housing outer surface, centers on three faces of described sidewall and covers described end face.

6. relay according to claim 5 is characterized in that, the one side that described screening can covers described end face is provided with the through hole that can allow binding post or splicing ear to pass.

7. according to claim 1,2,4 or 5 described relays, it is characterized in that described screening can is adhered to described housing outer surface.

8. according to claim 1,2,4 or 5 described relays, it is characterized in that described screening can is provided with first breach; Described first breach is the extension of the direction to another splicing ear from one of them splicing ear.

9. relay according to claim 8 is characterized in that, described first notch length is more than or equal to the distance between two splicing ears.

10. relay according to claim 8 is characterized in that, described sidewall comprises upper wall, You Bi, lower wall and the Zuo Bi that connects successively; The distance of splicing ear and upper wall is less than the distance of splicing ear and lower wall; Described first breach is arranged on the one side with the described upper wall of described covering.

11. according to claim 1,2,4 or 5 described relays, it is characterized in that described screening can is provided with second breach; Described second breach is the extension of the direction to another coil terminals from one of them coil terminals; Described second notch length is more than or equal to the distance between two coil terminals; Described sidewall comprises upper wall, You Bi, lower wall and the Zuo Bi that connects successively; The distance of coil terminals and upper wall is less than the distance of coil terminals and lower wall; Described second breach is arranged on the one side that covers described upper wall.

12. according to claim 1,2,4 or 5 described relays, it is characterized in that, shown in the lower edge of the lower edge of screening can and described housing have a distance of setting.

13. according to claim 1,2,4 or 5 described relays, it is characterized in that described screening can extends to described bottom surface from described end face.

14. relay according to claim 1 is characterized in that, described screening can is magnetic conductive shell.

15. relay according to claim 14 is characterized in that, described screening can is iron shell, carbon shell, silicon steel shell or irony alloy shell.