CN1081385C - Coil end connection structure in coil bobbin assembly - Google Patents

Abstract

There is a coil terminal connected structure in a coil bobbin which is used by the small motor such as a bell. A pair of coil terminal mounts are made at one flange of a coil bobbin which has flanges at both ends of a drum. Metallic coil terminals are made each at these mounts. Wrapping poles are projected at the side of each mount, and the lead is wound by a specified number of times on the tip of a coil terminal, and further it is wound on the after being wound by a specified number of times on the wrapping pole. Even if tension works on a wire at the time of winding, strong force does not work on the coil terminal being a directly sharp edge, because one end of the lead is wound on the coil terminal via the support at the wrapping pole. Therefore, the disconnection of the coil is prevented, so the efficiency of wiring improves.

Description

The syndeton of the coil-end of coil-winding pipe assembly

The present invention relates to the syndeton of the coil-end of coil-winding pipe assembly.

An example of the coil-winding pipe assembly of the small size motor that is used for clock and so on shown in Figure 3, this assembly comprises a coil 22, and binding post 23, coil 22 by copper wire and so on the coil-winding pipe 21 of plastics forming.Extension 22a, the 22b of coil 22 ends around on several circles of predetermined number, and the end is contained on the binding post 23, binding post 23 is contained in the flange part 21b that is located at coil-winding pipe 21 1 ends and goes up attaching terminal part 21d, on the 21e.

Copper wire comprised at first around the method on the bobbin 21 an end 22a of copper wire is gone up certain number of turns around an end 23b of coil lead 23, then copper wire is directed to the core 21a on the bobbin 21 and goes up certain number of turns around this core 21a.Then the other end 22b of copper wire is drawn, around upward certain number of turns, the cut-out then of end 23b of another binding post 23.

As mentioned above, copper wire is comprised the end 23b of an end of coil 22 around a binding post 23 around the work on the bobbin 21, then on the core 21a of bobbin 21, need be added to certain force of strain on the copper wire, so that make it with predetermined density on core 21a, but because binding post 23 stamps out by sheet copper or squama bronze sheet etc., the bight of end 23b of the binding post 23 of coiling 22 is sharp limits.As a result, when coil 22 during around the core 21a of bobbin 21, coil 22 is added a tension force, this line-transect just has and is cut off by these sharp limits and the danger of fracture.If when coiling, the copper wire fracture will be carried out repair copper wire will be connected, and so just reduce operating efficiency.

Therefore, an object of the present invention is to prevent when coil is on bobbin coil fracture and improve the efficient of coiling work.

For realizing above-mentioned purpose of the present invention, the invention provides the end winding syndeton in a kind of bobbin assembly, described bobbin assembly comprises a coil, on the core of the flanged bobbin in two ends, on flange of bobbin, be provided with a pair of attaching terminal part, binding post is contained in attaching terminal part, its end is partly outstanding from the attaching terminal, the coil extension is on binding post, and the winding terminal of extension is connected on the binding post, it is characterized in that:

From the outstanding respectively wrapping post of the outer surface of described attaching terminal part and

The extension of described coil earlier on the described wrapping post after certain number of turns again around to described binding post.

In addition, replace being located at the lateral surface of attaching terminal part, wrapping post can be located at and connect column end from attaching terminal part highlight, and that binding post is dressed up its end is outstanding from the wrapping post end surfaces.

Describe the present invention in detail below by drawings and Examples, in the accompanying drawing:

Fig. 1 is the perspective view of first embodiment of the invention;

Fig. 2 is the perspective view of another embodiment of the present invention;

Fig. 3 is a perspective view of existing branch art.

The present invention's first most preferred embodiment has been shown among Fig. 1, one of them bobbin assembly comprises according to end winding syndeton of the present invention, and this assembly comprises a bobbin 1, the coil 2 on this bobbin 1 and the binding post 3 that the exit of coil 2 and external circuit are coupled together.

Bobbin 1 is molded from plastic into shape.What constitute coil 2 goes up certain number of turns as the metal wire of enamelled wire and so on around the core 1a of bobbin 1.It is outstanding forward that a pair of attaching terminal part 1d, 1e with rectangular front face is set as the first half of front surface of a flange portion 1b among two flange portion 1b, the 1c on core 1a end.

Binding post 3,3 is vertically from following reeve attaching terminal part 1d, 1e, and binding post 3,3 is stamped out by thin squama bronze sheet, and the cross section of side is L shaped substantially; The middle part of the vertical component of L shaped binding post wraps in attaching terminal part 1d, 1e by press-fiting, their end 3b, and 3b is outstanding from the upper end of attaching terminal part 1d, 1e.

The resilient contact 3c of binding post 3,3,3c extends forward near the bottom of bobbin 1, and resilient contact 3c, the leading section of 3c are curved downwards, and their end is arranged to lower than the basal surface of bobbin 1.

It is outstanding from the lateral surface of attaching terminal part 1d, 1e respectively that wrapping post 1f, 1g are set.Wrapping post 1f, 1g are columniform pillars, and it highly is about 1.5 times of diameter, and whole with 1 one-tenth of bobbin.

An extension 2a wiry who constitutes coil 2 is around a binding post 3,3 end 3b goes up certain number of turns, then on wrapping post 1f around certain number of turns around to core 1a, coil 2 is an extension 2b around the other end of core 1a, it on the wrapping post 1g around certain number of turns certain number of turns on the end 3b of another binding post 3 again.Cut off extension 2b in the precalculated position, the line end 2d that cuts off is soldered to the end 3b of binding post 3 by soldering.

A mounting portion 1h is set from attaching terminal part 1d, the following centre of 1e, outstanding forward from the following middle side part of flange 1b, be provided with a hole 1i so that be screwed on the wiring board (not shown) at this mounting portion 1h.

Coil 2 is carried out with coil winding machine around the work on the bobbin 1.At first, wire around the last certain number of turns of the end 3b of a binding post 3,3, is guided to the side of bobbin 1 then, go up certain number of turns (present embodiment is two circles) around wrapping post 1f again, guide to again on the core 1a, and go up certain number of turns around core 1a.

Coil 2 is carried out adding on the wire under the certain force of strain on the core 1a, but because the line end that is supporting when the beginning winding operation is on the wrapping post 1f that does not have sharp limit, rather than on the binding post that sharp limit is arranged, even when tension force is added on the wire, do not act on pretending on the wire yet and firmly walk around sharp limit, therefore can not break wire.

When the process of core 1a finished, the extension 2b of coil 2 can not unclamp it around the certain number of turns of the end 3b of each binding post 3 at coil 2.The bobbin 1 that has wound is taken out from coil winding machine, and two line end 2c of coil, 2d is welded in the end 3b of binding post 3,3 with soldering, and 3b has so just finished bobbin assembly.

In this most preferred embodiment, wrapping post is cylindrical pillar, but they also can be polygonal, as square or hexagonal section.Regardless of the wrapping post shape, the coil extension directly is not bearing on the sharp limit as binding post and so on, tension force effect wire thereon goes forward to walk around wrapping post being connected to binding post, can not make the wire fracture.

Another most preferred embodiment is shown on Fig. 2.In this embodiment, be provided with wrapping post 11f, 11g, from the attaching terminal part 11d of bobbin 11, the upper surface of 11e is outstanding.Wrapping post 11f, 11g are made of cylindrical pillar, and it highly is about diameter half, and whole with 11 one-tenth of bobbins.

Binding post 13,13 vertically passes attaching terminal part 11d, 11e and being mounted in it, and from wrapping post 11f, the upper surface of 11g is outstanding.

Constitute an extension 12a wiry of coil 12,, go up certain number of turns around wrapping post 11f then, again on core 11a around the last certain number of turns of an end 13b of a binding post 13.The other end of the coil 12 on the core 11a constitutes extension 12b, goes up certain number of turns around wrapping post 11g and goes up certain number of turns around the end 13b of another binding post 13 again.Cut off extension 12b at certain position, with soldering the coiling end 12d of coil is linked on the end 13b of binding post 13 again.

Because other component part of second most preferred embodiment is the same with first embodiment's, they add 10 at the label of the corresponding parts of first embodiment, just no longer describe in detail here.

Coil 12 comprised at first around the work on the bobbin 11 wire is gone up certain number of turns around the end 13b of a binding post 13, go up certain number of turns (being two circles) around wrapping post 11f in this embodiment then, again it is guided on the core 11a, and go up certain number of turns around core 11a.

Coil 12 on core 11a, in that being added under the certain force of strain condition, wire carries out, since at line end that winding operation begins to support on the wrapping post that does not have sharp limit on the 11f, rather than be bearing on the binding post on sharp limit, even tension force uses on wire, the strong active force that does not also act on the wire is walked around sharp limit, therefore can not break wire.

In this most preferred embodiment, wrapping post is cylindrical pillar, but as first most preferred embodiment, wrapping post is also polygonal, as square or hexagonal cross section.

According to the present invention, because that wrapping post is set as from the outer surface of wiring post part is outstanding, the fracture of coil in the time of on wrapping post, preventing to wind the line behind the binding post by the extension of coil is walked around.As a result, increased the efficient of coiling work.In addition, by from attaching terminal part highlight wrapping post being set, and on wrapping post, can obtain same effect after the extension of coil walked around binding post from binding post.

Claims (2)

1. the end winding syndeton in the bobbin assembly, described bobbin assembly comprises a coil, on the core of the flanged bobbin in two ends, on flange of bobbin, be provided with a pair of attaching terminal part, binding post is contained in attaching terminal part, and its end is partly outstanding from the attaching terminal, and the coil extension is on binding post, the winding terminal of extension is connected on the binding post, it is characterized in that:

From the outstanding respectively wrapping post of the outer surface of described attaching terminal part and

The extension of described coil earlier on the described wrapping post after certain number of turns again around to described binding post.

2. the end winding syndeton in the bobbin assembly, described bobbin assembly comprises a coil, on the core of the flanged bobbin in two ends, on flange of bobbin, be provided with a pair of attaching terminal part, binding post is contained in attaching terminal part, and its end is partly outstanding from the attaching terminal, and the coil extension is on binding post, the winding terminal of extension is connected on the binding post, it is characterized in that:

From outstanding respectively wrapping post in the end nipple source of the described binding post of described attaching terminal part, described binding post be contained in its end from described wrapping post end surface outstanding and

The extension of described coil earlier on the wrapping post certain number of turns again on binding post.

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