JPH0682811U - Bobbin for solenoid - Google Patents

Abstract

(57) [Summary] [Objective] When winding a winding wire 4 having a rectangular cross section on a bobbin 3, the winding wire 4 is arranged in a plurality of stages in an effortless manner, and a space-efficient product is provided. [Structure] A spiral V groove 3e is provided on a winding surface 3b of a bobbin 3, and a winding wire 4 having a rectangular cross section is wound along the V groove 3e.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a bobbin for a solenoid.

[0002]

[Prior art]

 As shown in FIG. 3, a solenoid 2 is incorporated in the solenoid valve 1 as a drive source thereof. As shown in FIG. 4, the solenoid 2 has a winding 4 wound around a bobbin 3. The bobbin 3 is made of a non-magnetic material and has a bobbin body 3a having a winding surface 3b around which the winding 4 is wound, and a pair of flanges 3c and 3d provided at the end of the bobbin body 3a. ing.

The winding 4 has a circular cross-sectional shape, so that after winding, a gap 5 is formed between the windings 4. On the other hand, in recent years, in order to eliminate the gap 5 and increase the space efficiency, it is considered that the cross-sectional shape of the winding wire 4 is a rectangle (square) without changing its cross-sectional area, as shown in FIG. Has been.

[0004]

[Problems to be solved by the device]

 However, if the winding 4 has a rectangular cross-sectional shape while the shape of the bobbin 3 remains the same, the winding 4 is difficult to fit in the bobbin 3 during winding, and it is difficult to align the winding 4. There's a problem.

[0005]

[Means for Solving the Problems]

 In view of the above points, the present invention has been devised to solve the above-mentioned problems in the prior art. In order to achieve this object, the winding of a bobbin for a solenoid that winds a coil of rectangular cross section We decided to provide a spiral V-shaped groove on the surface.

[0006]

[Action]

 One of the corners of the rectangular cross section of the winding is engaged with the V-groove and the first stage of the winding is wound around the winding surface according to the spiral of the V-groove. When the first step of the winding is wound around the winding surface, the first step forms a spiral and V-groove-shaped recess on the outer periphery of the first step. , Repeat this for as many steps as necessary until the required length of winding has been wound.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the bobbin 3 is made of a non-magnetic material, and has a bobbin main body 3 a provided with a winding surface 3 b for winding the winding wire 4 and an end portion of the bobbin main body 3 a. It has a pair of flanges 3c and 3d, and one spiral V groove 3e is provided on the winding surface 3b.

The V-shaped groove 3e has a right-angled triangle whose base angle is right angle, and one of the corners in the rectangular cross-section of the winding wire 4 is engaged without any gap. The pitch of the spiral of the V groove 3e is the same as the diagonal line in the rectangular cross section of the winding wire 4, and the first stage (first row on the inner peripheral side) of the winding wire 4 is wound in the axial direction of the bobbin 3 without any gap. Is becoming.

When the winding wire 4 having a rectangular cross section is wound around the winding surface 3b having the V groove 3e, one of the corners of the winding wire 4 in the rectangular cross section is engaged with the V groove 3e. Then, the first stage of the winding wire 4 is wound around the winding surface 3b according to the spiral of the V groove 3e, and the spiral shape formed by the first stage winding wire 4 on the outer periphery of the first winding wire 4 is wound. The second-stage winding 4 is wound around the V-groove-shaped recess 4a, and after this, the number of stages (six in the figure) required until the winding of the required-length winding 4 is completed, repeat. Therefore, according to this structure, it is possible to wind the winding 4 having a rectangular cross section in a plurality of stages in a state in which the windings 4 are properly aligned by using the V groove 3e or the concave portion 4a as a winding guide. It is possible to provide products that are space efficient while simplifying the work.

The length of the hypotenuse of a right-angled triangle in the cross-sectional shape of the V-groove 3e is the same as the length of one side in the rectangular cross-section of the winding 4, but the winding when there is a dimensional error in the molding of the bobbin 3 Considering the difficulty of attachment, it is desirable to make the length of the hypotenuse shorter than the length of one side. As shown in FIG. 2, when the length of the hypotenuse is shorter than the length of one side, a straight surface (cylindrical surface) in the axial direction is left on the winding surface 3b, and the winding surface 3b and the winding 4 are A gap 5 will be formed between the first stages.

[0012]

[Effect of device]

 The present invention has the following effects. That is, by providing the spiral V-shaped groove on the winding surface around which the winding wire having the rectangular cross section is wound, the winding wire having the rectangular cross section can be wound in a state in which the winding wire having the rectangular cross section is arranged in a multi-stage manner. It is possible to provide a space-efficient and compact product by simplifying the winding work.

[Brief description of drawings]

FIG. 1 is a half-cut sectional view showing a state in which a winding is wound around a bobbin according to an embodiment of the present invention.

FIG. 2 is a half cutaway view of a bobbin according to another embodiment of the present invention with a winding wound around it.

FIG. 3 is a sectional view of a solenoid valve.

FIG. 4 is a half-cut sectional view showing a state in which a winding is wound around a bobbin according to a conventional example.

FIG. 5 is a half-cut sectional view showing a state in which a winding is wound around a bobbin according to another conventional example.

[Explanation of symbols]

 1 Solenoid Valve 2 Solenoid 3 Bobbin 3a Bobbin Body 3b Winding Surface 3c, 3d Flange 3e V Groove 4 Winding 4a Recess 5 Clearance

Claims (1)

[Scope of utility model registration request] 1. A bobbin for a solenoid having a spiral V groove (3e) provided on a winding surface (3b) around which a winding (4) having a rectangular cross section is wound.