CN207925285U

CN207925285U - Ignition coil

Info

Publication number: CN207925285U
Application number: CN201820455269.2U
Authority: CN
Inventors: 鲁丹军; 甄成伟; 上官百俊; 覃卫
Original assignee: Berg Warner Emission System (ningbo) Co Ltd
Current assignee: Berg Warner Emission System (ningbo) Co Ltd
Priority date: 2018-04-02
Filing date: 2018-04-02
Publication date: 2018-09-28
Anticipated expiration: 2028-04-02

Abstract

The utility model discloses a kind of ignition coil, including skeleton (1), skeleton (1) periphery is equipped with wire casing (2), it is arranged with coil (3) in wire casing (2), by single copper wire, sequentially coiling primary winding body (3.1) and secondary rolling thread body (3.2) are constituted coil (3), primary winding body (3.1) is arranged close to the bottom surface of wire casing (2) and the angle of side wall, primary winding body (3.1) after the completion of coiling includes the coiling conical surface (3.1.1) for favouring the setting of skeleton (1) axis, secondary rolling thread body (3.2) along the axial alternately stacked first sub- wire winding layer (3.2.1) of skeleton (1) and the second sub- wire winding layer (3.2.2) by constituting.The utility model provides the ignition coil that a kind of skeleton manufacturing cost is low, coil winding is efficient, coil pressure drop is small.

Description

Ignition coil

Technical field

The utility model is related to car engine ignition part technical field, more particularly to a kind of ignition coil.

Background technology

In the prior art, in order to reduce the pressure drop between coil, usually by structure of ignition coil at primary skeleton and secondary The form of skeleton, copper wire, which is first wound on primary skeleton, when coiling constitutes primary coil, then be wound on secondary framework constitute it is secondary Coil, since the length in an axial direction of secondary coil is very long, the mode of conventional coiling reciprocal in an axial direction makes the pressure drop of coil It is excessive, in order to reduce pressure drop, 5-7 slot is needed on secondary framework and separates secondary coil, to reduce copper wire along axis To coiling length, to reduce pressure drop, defect existing for this structure：1, it when secondary coil coiling, when copper wire passes through slot, needs Coil winding machine is stopped, then cross-slot starts again around this influences the production efficiency of product, and secondary framework is due to that will be arranged Multiple slots, structure is more complicated, of high cost.

Invention content

Technical problem to be solved in the utility model is：There is provided a kind of skeleton manufacturing cost is low, coil winding is efficient, The small ignition coil of coil pressure drop.

The technical scheme in the invention for solving the above technical problem is：A kind of ignition coil, including skeleton, the bone Frame periphery is equipped with wire casing, and coil is arranged in the wire casing, it is characterised in that：The coil is primary by the sequentially coiling of single copper wire Winding body and secondary rolling thread body are constituted, and the primary winding body is arranged close to the bottom surface of wire casing and the angle of side wall, and coiling is complete The primary winding body after includes the coiling conical surface for favouring the setting of skeleton axis, and the secondary rolling thread body is by along bone Axially the alternately stacked first sub- wire winding layer and the second sub- wire winding layer are constituted frame, and the first sub- wire winding layer is bored by copper wire along coiling Face direction and radially-inwardly coiling is constituted along skeleton, the second sub- wire winding layer from copper wire along the coiling conical surface and along skeleton it is radial to Outer coiling is constituted.

Compared with prior art, the utility model has the advantage of：A wire casing is only arranged in skeleton, compared to original time Grade coil needs the structure that multiple slots separate, and manufacturing cost is lower, and when coil winding machine coiling, without shutting down cross-slot, line at slot It is more efficient to enclose coiling, pre-wound body is completed in coil elder generation coiling, and the coiling conical surface of pre-wound body provides matrix, the first sub- wire winding layer and the Two sub- wire winding layers are alternately laminated along coiling conical surface direction, and coil is axial along skeleton much smaller than wire casing along the coiling length of the coiling conical surface Length, therefore the pressure drop of coil is small.

As a kind of improvement of the utility model, the pre-wound body by copper wire with wire casing bottom surface and the angle of side wall Begin, constituted along skeleton axial reciprocating coiling, by the improvement, when coiling pre-wound body, copper wire still in the form of conventional coiling, Along the axial reciprocating coiling of skeleton, the pre-wound body that coiling is completed has the coiling conical surface, is used for for coiling body as reference plane.

As a kind of improvement that also has of the utility model, the angle of the coiling conical surface and skeleton axis is 30 °~60 °, Pass through the improvement so that the angle of the first sub- wire winding layer and the second sub- wire winding layer and skeleton axis is 30 °~60 °, to make The length of copper wire winding, along the length of skeleton axial direction, reduces pressure drop much smaller than coil.

As a kind of improvement that also has of the utility model, the angle of the coiling conical surface and skeleton axis is 45 °, passes through institute State improvement, it is preferred that the gradient of coil-winding is 45 °, to keep copper wire small and reciprocal along the length of coiling conical surface direction coiling Coiling number is suitable, and then increases coiling efficiency while ensureing that coil pressure drop is small.

There is a kind of improvement as the utility model, the bottom surface of the wire casing is vertical with side wall, the primary winding body Section be right angled triangle or right-angled trapezium, the corresponding conical surface of bevel edge of the right angled triangle or right-angled trapezium is coiling The conical surface, by the improvement, the bottom surface of wire casing is usually vertical with side wall, therefore the section of primary winding body can be right angled triangle Either the angle of the axis of the bevel edge and skeleton of right-angled trapezium right angled triangle or right-angled trapezium is the coiling angle of copper wire Degree.

Description of the drawings

Fig. 1 is the utility model overall structure stereoscopic schematic diagram.

Fig. 2 is cross-sectional view at the utility model coil.

1- skeletons, 2- wire casings, 3- coils, 3.1- primary winding bodies, the 3.1.1- coiling conical surfaces, 3.2- secondary rolling thread bodies, 3.2.1- the first sub- wire winding layer, the second sub- wire winding layers of 3.2.2-.

Specific implementation mode

The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

As shown in Figs. 1-2,

Ignition coil includes skeleton 1, and wire casing 2 is equipped in skeleton 1, coil 3 is arranged in wire casing 2.

Coil 3 includes primary winding body 3.1 and secondary rolling thread body 3.2, what the division surface of the two was indicated by dotted line in Fig. 2 The coiling conical surface 3.1.1 when copper wire winding, first presses the hollow arrow direction coiling primary winding body 3.1 in Fig. 2, i.e., along 1 axis of skeleton Yearn for after-combustion line, coiling conical surface 3.1.1 shapes after the completion of primary winding body 3.1, then copper wire filled arrows in Fig. 2 again Direction coiling secondary rolling thread body 3.2, i.e., the second sub- coiling of the first sub- wire winding layer 3.2.1 and oblique upward coiling obliquely downwards Layer 3.2.2, the first sub- sub- wire winding layer 3.2.2 of wire winding layer 3.2.1 and second are alternately laminated, and solid arrow direction is the coiling conical surface 3.1.1 inclined direction, when copper wire winding, along filled arrows inclined direction length much smaller than coil 3 along 1 axis of skeleton Length, therefore 3 pressure drop of coil is small, the copper wire only coiling in wire casing 2, coiling are efficient when coiling.

Wherein, most preferably 45 ° of the coiling gradient on coiling inclined-plane and angle, that is, coil 3 of 1 axis of skeleton.

Only the most preferred embodiment of the utility model is described above, but is not to be construed as the limit to claim System.The utility model is not only limited to above example, and concrete structure is allowed to vary.It is all in the utility model independent right It is required that protection domain in made by various change in scope of protection of the utility model.

Claims

1. a kind of ignition coil, including skeleton (1), skeleton (1) periphery is equipped with wire casing (2), is arranged in the wire casing (2) Coil (3), it is characterised in that：The coil (3) is by single copper wire sequentially coiling primary winding body (3.1) and secondary rolling thread body (3.2) it constitutes, the primary winding body (3.1) is arranged close to the bottom surface of wire casing (2) and the angle of side wall, after the completion of coiling The primary winding body (3.1) includes the coiling conical surface (3.1.1) for favouring the setting of skeleton (1) axis, it is described it is secondary around Wire body (3.2) is by along the axial alternately stacked first sub- wire winding layer (3.2.1) of skeleton (1) and the second sub- wire winding layer (3.2.2) structure At the first sub- wire winding layer (3.2.1) is by copper wire along the coiling conical surface direction (3.1.1) and along skeleton (1) radially-inwardly coiling It constitutes, the second sub- wire winding layer (3.2.2) is by copper wire along the coiling conical surface (3.1.1) and along skeleton (1) radially outward coiling structure At.

2. ignition coil according to claim 1, it is characterised in that：The primary winding body (3.1) is by copper wire with wire casing (2) bottom surface and the angle of side wall originate, are constituted along skeleton (1) axial reciprocating coiling.

3. ignition coil according to claim 1, it is characterised in that：The coiling conical surface (3.1.1) and skeleton (1) axis Angle be 30 °~60 °.

4. ignition coil according to claim 3, it is characterised in that：The coiling conical surface (3.1.1) and skeleton (1) axis Angle be 45 °.

5. ignition coil according to claim 1, it is characterised in that：The bottom surface of the wire casing (2) is vertical with side wall, described The section of primary winding body (3.1) is the bevel edge pair of right angled triangle or right-angled trapezium, the right angled triangle or right-angled trapezium The conical surface answered is the coiling conical surface (3.1.1).