CN102270550B - Electromagnetic relay - Google Patents

Abstract

The invention discloses an electromagnetic relay, which comprises a coil, a frame body component, and a winding framework for winding the coil, wherein the winding framework is erected on the frame body component, and a winding terminal is embedded at one end of the winding framework; a leading-out terminal is arranged on the frame body component; the winding terminal comprises a first connecting terminal and a second connecting terminal which are perpendicular to each other; the input end or the output end of the coil is in wire-wrap connection with the second connecting terminal; and the leading-out terminal is electrically connected with the first connecting terminal. According to the electromagnetic relay disclosed by the invention, the winding terminal of which the two connecting terminals are mutually perpendicular is adopted, the quality of the electromagnetic relay is improved due to the fact that the winding terminal has small occupied space and low possibility of deformation caused by impaction; and compared with the electromagnetic relay making use of a U-shaped winding terminal in the prior art, the electromagnetic relay disclosed by the invention has the advantage that materials are saved.

Description

Electromagnetic relay

Technical field

The present invention relates to relay field, relate in particular to the take up room electromagnetic relay of little and difficult generation deformation of a kind of wire wrap terminal.

Background technology

Relay is a kind of automatic switch element with isolation features; it is widely used in remote control, remote measurement, communication, control automatically, electromechanical integration and power electronic equipment; be one of most important control element, in control circuit, play the effects such as automatic adjusting, safeguard protection, change-over circuit.

Electromagnetic relay is a kind of relay that utilizes electromagnetic force driving mechanical parts caused by relative motion predetermined response, and it is generally by iron core member, coil, armature, yoke, form with reed of contact etc.When producing electromagnetic force during by electric current in coil, armature is attracted, thereby makes the fixed contact adhesive of moving contact and the static contact spring piece of movable contact spring; When in coil when current vanishes electromagnetic force disappear thereupon, armature resets, thereby the moving contact of movable contact spring and the fixed contact of static contact spring piece are separated.Adhesive by moving contact and fixed contact or separate, reaches conducting or cuts off the object of circuit.

The structural representation of the bobbin of the electromagnetic relay of prior art as shown in Figure 1, one end of bobbin 1 is embedded U-shaped wire wrap terminal 12, terminal of U-shaped wire wrap terminal 12 and input or the output solderless wrapped connection of coil 11, another terminal is for being electrically connected with leading-out terminal.If coil 11 is unicoils, need two U-shaped wire wrap terminals respectively with monocoil input and output solderless wrapped connection; If coil 11 is twin coils, need four U-shaped wire wrap terminals, wherein two U-shaped wire wrap terminals respectively with input and the output solderless wrapped connection of first coil, another two U-shaped wire wrap terminals respectively with input and the output solderless wrapped connection of second coil.Shown in Fig. 1 is the situation of twin coil.

Electromagnetic relay adopts U-shaped wire wrap terminal 12 to have following shortcoming:

1, U-shaped wire wrap terminal 12 take up room larger, the particularly situation of twin coil, as shown in Figure 1, the size a that U-shaped wire wrap terminal 12 takies bobbin 1 is larger, is easily touched and deformation occurs, and causes product bad;

2, the material that U-shaped wire wrap terminal 12 needs is more, and cost is higher.

Summary of the invention

In order to solve the problems referred to above of prior art, the object of this invention is to provide a kind of electromagnetic relay, its wire wrap terminal takes up space little, and difficult quilt touches generation deformation, and can save material.

To achieve these goals, the invention provides a kind of electromagnetic relay, comprise coil, support body parts and the bobbin for described coil winding, described bobbin is erected on described support body parts and one end is embedded with wire wrap terminal, described support body parts are provided with leading-out terminal, described wire wrap terminal comprises orthogonal the first splicing ear and the second splicing ear, the input of described coil or output and described the second splicing ear solderless wrapped connection, described leading-out terminal is electrically connected with described the first splicing ear.

As preferably, the middle part of described the second splicing ear and described the first splicing ear is connected to form T-shaped wire wrap terminal.

As preferably, described the second splicing ear is to the vertical direction bending of the upper surface of described the first splicing ear.

As preferably, described T-shaped wire wrap terminal and described bobbin composite molding.

The invention has the beneficial effects as follows: two splicing ears of wire wrap terminal are mutually vertical, take up room little, and difficult quilt touches generation deformation, has improved the quality of electromagnetic relay; Compare with the U-shaped wire wrap terminal of prior art, also saved material, reduced cost.

Brief description of the drawings

Fig. 1 is the structural representation of the bobbin of a kind of electromagnetic relay of prior art;

Fig. 2 is the structural representation of the electromagnetic relay of the embodiment of the present invention;

Fig. 3 is the structural representation of the bobbin of the electromagnetic relay shown in Fig. 2;

Fig. 4 is the structural representation before the wire wrap terminal bending of the electromagnetic relay shown in Fig. 2;

Structural representation after the bobbin winding around of the electromagnetic relay shown in Fig. 5 Fig. 2;

Fig. 6 is the structure for amplifying schematic diagram of the wire wrap terminal of the electromagnetic relay shown in Fig. 2;

Fig. 7 be Fig. 2 electromagnetic relay along A-A to partial schematic diagram.

Embodiment

Describe embodiments of the invention in detail below in conjunction with accompanying drawing.

As shown in Figures 2 to 7, the electromagnetic relay of the embodiment of the present invention comprises: comprise coil 11, support body parts 2 and the bobbin 1 being wound around for coil 11, bobbin 1 is erected on support body parts 2 and bobbin 1 one end is embedded with wire wrap terminal 22, support body parts 2 are provided with leading-out terminal 21, wire wrap terminal 22 comprises orthogonal the first splicing ear 221 and the second splicing ear 222, the input of coil 11 or output and the second splicing ear 222 solderless wrapped connections, leading-out terminal 21 is electrically connected with the first splicing ear 221.

In the present embodiment, the middle part of the second splicing ear 222 and the first splicing ear 221 is connected to form T-shaped wire wrap terminal, and certain the second splicing ear 222 is connected with the end of the first splicing ear 221.

As shown in Figure 3 and Figure 4, for more easily by the input of coil 11 or output solderless wrapped connection to the second splicing ear 222 of T-shaped wire wrap terminal 22, the second splicing ear 222 is to the vertical direction bending of the upper surface of the first splicing ear 221 (being about to the second splicing ear 222).After bending, the second splicing ear 222 is upturned, as shown in Figure 6 and Figure 7, very convenient when coiling.In order to make the second splicing ear 222 long as best one can for the length of the part that winds the line, the second splicing ear 222 starts bending from its root.

Referring to Fig. 1 and Fig. 5, T-shaped wire wrap terminal 22 take size a that the size b of bobbin 1 takies bobbin 1 than U-shaped wire wrap terminal 12 little about 1.5mm, be that T-shaped wire wrap terminal 22 takes up space less compared with U-shaped wire wrap terminal 12, difficult quilt touches generation deformation, very applicable for the electromagnetic relay that space requirement is stricter.And, compare with the U-shaped wire wrap terminal of prior art, also save material.

T-shaped wire wrap terminal 22 and bobbin 1 can composite moldings, the first splicing ear 221 of T-shaped wire wrap terminal 22 is directly embedded in moulding material, in order to make the first splicing ear 221 securely in insert molding material, can suitably increase the surface area of the first splicing ear 221 embedded parts, as shown in Figure 6.When the input of the second splicing ear 222 and coil 11 or output solderless wrapped connection, can adopt the mode such as arc welding or laser welding.The mode such as arc welding or laser welding that also can adopt that is electrically connected of the first splicing ear 221 and leading-out terminal 21.

Certainly, except the electromagnetic relay that the present embodiment is described, all can this T-shaped wire wrap terminal in multiple different electromagnetic relay to save space and material.

Above embodiment is only exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is limited by the claims that add.Those skilled in the art can, in essence of the present invention and protection range, make various amendments or be equal to replacement the present invention, this amendment or be equal to replacement and also should be considered as dropping in protection scope of the present invention.

Claims (2)

1. an electromagnetic relay, comprise coil, the bobbin of support body parts and the described coil winding of confession, it is characterized in that, described bobbin is erected on described support body parts and one end is embedded with wire wrap terminal, described support body parts are provided with leading-out terminal, described wire wrap terminal comprises orthogonal the first splicing ear and the second splicing ear, the input of described coil or output and described the second splicing ear solderless wrapped connection, one end of described the first splicing ear is embedded in bobbin and perpendicular to the length direction setting of described bobbin, described leading-out terminal is electrically connected perpendicular to the length direction of described the first splicing ear and described bobbin and with described the first splicing ear simultaneously, wherein,

The second splicing ear comprises the first extension and the second extension, described the first extension is arranged on the front end place of the first splicing ear along the direction vertical with the length direction of described the first splicing ear, described the second extension is arranged at the front end place of the first extension along the direction vertical and vertical with the length direction of described the first splicing ear with the length direction of described the first extension.

2. electromagnetic relay according to claim 1, is characterized in that, described wire wrap terminal and described bobbin composite molding.