JPH041168Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a coil winding jig using a bobbin,
In particular, it relates to a device that is attached to the main shaft of a winding machine and for fixing a bobbin to the main shaft of the winding machine.

[Conventional technology]

Conventionally, in this type of winding jig, in order to fix the bobbin to the winding jig, it is common to embed a small coil spring and a ball in the bobbin mounting portion. In addition, if the dimensions of the bobbin's core insertion part (the part into which the winding jig is inserted) are too small to embed the coil spring and ball, install the bobbin by cutting into the bobbin mounting part of the winding jig. The bobbin is fixed by giving the part itself a spring property.

[Problem that the invention attempts to solve]

However, as it is used, the bobbin mounting part loses its springiness and the bobbin is no longer fixed, causing the winding to become disordered.Also, automatic winding machines have the disadvantage that the pin terminals cannot be connected properly. It was hot.

Therefore, an object of the present invention is to provide a coil bobbin winding jig that reliably fixes the bobbin to the main shaft of a winding machine, especially when the bobbin is small and the size of the core insertion part is small.

[Means and actions for solving problems]

According to the present invention, in the coil bobbin winding jig including a winding machine mounting part that is attached to a winding machine and a bobbin mounting part provided at the tip of the winding machine mounting part, the bobbin mounting part is , has a core part inserted into the center hole of the bobbin, and a substantially U-shaped spring assembled to the core part, and the core part has a groove on the tip surface and holes on both sides. , the spring is made by bending a wire rod, and has engaging parts at both ends fitted into holes on both sides, a positioning part in the middle fitted into a groove on the tip surface, and a connecting part between the engaging part and the above. A coil bobbin winding jig is provided, which integrally has a pair of elastic parts between the positioning part and the pair of elastic parts, each of which extends in an arch shape in a direction away from both side surfaces. can get.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of an embodiment of a coil bobbin winding jig according to the present invention.
The bobbin mounting portion 1, which has a rectangular cross section, has grooves 3 and 4 that extend continuously along its tip and both side surfaces. A hole 5 is provided at the end of the groove 4 on both sides. Spring 10 corresponds to these grooves 3 and 4 and hole 5.
can be assembled. The spring 10 is made by bending a wire rod, and has an engaging part 11 bent at both ends to fit into the hole 5, and a positioning part 12 to fit into the groove 3 on the end surface. There is. The spring 10 further includes a resilient portion 13 extending outward in an arched manner between the engaging portion 11 and the positioning portion 12. In this way, the spring 10 is configured in a substantially U-shape. Referring to FIG. 2, the bobbin 20 is attached to the bobbin attaching portion 1 to which the spring 10 is attached as shown by the arrow.

FIG. 3 is a plan view when the spring 10 is assembled into the groove and hole of the bobbin attachment part 1 of the winding jig and the bobbin 20 is attached. When the spring 10 is simply assembled into the bobbin mounting portion 1, the elastic portions 13 of the spring 10 protrude from both sides of the bobbin mounting portion 1, as shown by broken lines in FIG. Now, when the bobbin 20 is attached, the elastic portion 13 is pushed into the groove 4 as shown by the chain line in FIG. At this time, the bobbin 2 is caused by the frictional force based on the repulsive force of the spring 10, especially the elastic part 13.
0 is fixed. In actual winding work, the winding machine attachment part 2 is attached to a winding machine (not shown), and the winding machine rotates this winding jig around the axis as shown by arrow 30. It is done by letting

[Effect of idea]

According to the present invention, the bobbin can be fixed more reliably than in the conventional case in which a slot is provided in the bobbin mounting portion.
Furthermore, since the structure for holding the bobbin is simple and has few parts, assembly is easy. Furthermore, the bobbin can be easily attached to the bobbin mounting part by pushing it parallel to the axis along the elastic part of the spring.
Moreover, the bobbin can be easily removed by pulling it in the opposite direction to the direction in which it is attached. Therefore, the bobbin can be easily attached and detached without disassembling the winding jig. Moreover, when the bobbin is attached or detached, the arch-shaped elastic portion of the spring is gradually deformed, so that the attachment and detachment work can be carried out smoothly.
Also, when the bobbin is attached to the bobbin mounting part,
The rotational force, ie, the load, applied to the bobbin acts in a direction perpendicular to the elastic portion of the spring. As a result, the bobbin can effectively prevent idling due to the frictional force generated between the bobbin and the elastic portion of the spring. Furthermore, whereas conventionally the jig main body must be replaced when the springiness is lost, the present invention has the advantage that only the spring needs to be replaced. Therefore, it is possible to provide an excellent coil bobbin winding jig.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention in an exploded state, FIG. 2 is a perspective view showing the bobbin installation work, and FIG. 3 is a half-sectional view showing the state after the bobbin is installed. FIG. 4 is also a partial sectional view. 1...Bobbin mounting part, 2...Winding machine mounting part,
3, 4...groove, 5...hole, 10...spring, 11...
...Spring engaging part, 12...Spring positioning part, 1
3...Elastic part of the spring, 20...Bobbin.

Claims (1)

[Scope of utility model registration request] In a coil bobbin winding jig that includes a winding machine mounting part that is attached to a winding machine and a bobbin mounting part provided at the tip of the winding machine mounting part, the bobbin mounting part is installed in the center hole of the bobbin. A core part to be inserted,
a substantially U-shaped spring assembled to the core, the core having a groove on the tip end and holes on both sides, the spring being made by bending a wire;
Engaging portions at both ends fitted into the holes on both sides, respectively;
It integrally includes a positioning part in the middle part fitted into the groove of the tip surface, and a pair of elastic parts between the engaging part and the positioning part, and the pair of elastic parts are connected to each other from both sides. A winding jig for coil bobbins characterized by an arch-shaped protrusion that extends away from the coil bobbin.