JPH0686302U - Coil member - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding a coil member in which a wire is wound around a coil bobbin having a lead-out terminal and the tip of the wire is wound around the lead-out terminal, a cushioning mechanism capable of preventing disconnection without causing a secondary obstacle The purpose of the present invention is to provide a coil member. [Structure] In a coil member in which a wire is wound around a coil bobbin having a lead terminal and the tip of the wire is wound around the lead terminal, between a region of the wire 2 wound around the coil bobbin 1 and a region wound around the lead terminal 13. In addition, it has an expandable and contractible cushioning portion 14, and the cushioning portion 14 is formed of a wire material 2 which is formed into a coil shape or a wave shape and is provided with elasticity.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coil member in which a wire is wound around a coil bobbin having a lead terminal and the tip of the wire is wound around a lead terminal. The present invention relates to a mechanism for preventing disconnection when applied.

In recent years, there has been a strong demand for reductions in size and weight of various electronic devices and devices, and as a means for achieving this, reductions in size and weight of component parts are being promoted. For example, a coil member and an iron core are combined to form an electromagnet. The electric components such as the electromagnetic relay and the like are included.

The coil member is formed by winding a wire rod around a coil bobbin having a lead terminal, and the tip of the drawn wire is wound around the lead terminal. Since the wire is wound, the drawn wire easily breaks.

Therefore, there is a demand for the development of a coil member having a mechanism for preventing breakage of the drawn wire for winding the lead terminal.

[0005]

[Prior art]

 FIG. 3 is a perspective view showing the structure of a conventional coil member, and FIG. 4 is a partially enlarged view showing a conventional disconnection preventing means.

In FIG. 3, a conventional coil member is composed of a coil bobbin 1 and a wire rod 2 wound around a tubular portion 11 of the coil bobbin 1, and the vicinity of the tip of the drawn wire rod 2 is a flange 12 of the coil bobbin 1. It is wound around the lead-out terminal 13 that has been planted and soldered.

When the vicinity of the tip of the drawn wire 2 is wound around the lead terminal 13, the wire 2 is usually wound while applying a light tension. However, if tension remains on the wire rod 2 after soldering, the portion pulled out when an external impact is applied is likely to break.

Therefore, in the conventional coil member, the tip of the wire rod 2 is wound around the lead terminal 13 and soldered, and then an extra length is provided in the wire rod 2 by the method shown in FIG. 4 to absorb the tension remaining in the wire rod 2. The wire 2 is prevented from breaking when an impact is applied from the outside.

For example, in the method shown in FIG. 4 (a), the wire 2 is wound around the lead terminal 13 and soldered, and then the lead terminal 13 is further pushed into the flange 12 so that a portion of the lead terminal 13 near the tip is soldered. An extra length is provided by bringing the coil bobbin 1 close to the tubular portion 11.

Further, in the method shown in FIG. 4 (b), an extra length is provided in the wire 2 by bending the lead-out terminal 13 to which the wire 2 is soldered inward, and in the method shown in FIG. The wire 2 is provided with extra length by twisting the lead-out terminal 13 soldered with 2 to the right or left.

[0011]

[Problems to be solved by the device]

 However, the conventional coil member that pushes the lead-out terminal into the flange or bends or twists the lead-out terminal in order to provide extra length in the wire is damaged by the pushing or bending or twisting of the lead-out terminal, or the coil bobbin is damaged. Secondary damage such as damage may occur.

Moreover, in the case of a miniaturized coil member, the extra length that can be provided in the wire by the above method is extremely small, and the tension remaining in the wire can be absorbed, but it is applied from the outside. There was a problem that it was not possible to fully absorb the impact.

An object of the present invention is to provide a coil member having a cushioning mechanism capable of preventing disconnection without causing a secondary obstacle.

[0014]

[Means for Solving the Problems]

 FIG. 1 is a perspective view showing a coil member according to the present invention. Note that the same object is denoted by the same symbol throughout all drawings.

The above-mentioned problem is a coil member in which a wire is wound around a coil bobbin having a lead terminal and the tip of the wire is wound around the lead terminal, and in the area wound around the coil bobbin 1 of the wire 2 and the lead terminal 13. This is achieved by the coil member of the present invention, which has an elastic cushioning portion 14 between the regions to be wound, and the cushioning portion 14 is formed of a wire 2 which is formed into a coil shape or a corrugated shape and has elasticity.

[0016]

[Action]

 In FIG. 1, the coil member of the present invention comprises a wire rod which is formed into a coil shape or a corrugated shape and has elasticity between a region wound around a coil bobbin of the wire rod and a region wound around a lead terminal. It has a free cushioning part and can absorb the tension of the wire.

Moreover, the coil member of the present invention does not require pushing, bending, or twisting of the lead-out terminal for absorbing the tension of the wire rod, and the expandable / contractible cushioning portion is further externalized even after absorbing the tension of the wire rod. It has enough elasticity to absorb the impact.

That is, according to the present invention, it is possible to realize a coil member having a cushioning mechanism capable of preventing disconnection without causing a secondary obstacle.

[0019]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. Note that FIG. 2 is a schematic diagram showing a method of forming the buffer portion.

As shown in FIG. 1, the coil member of the present invention comprises a coil bobbin 1 and a wire rod 2 wound around a tubular portion 11 of the coil bobbin 1, and the tip of the drawn wire rod 2 is near the flange of the coil bobbin 1. It is wound around the lead terminal 13 planted in 12 and soldered.

The difference from the conventional coil member is that it is elastic by forming a coil shape or a wave shape between the region of the wire rod 2 wound around the coil bobbin 1 and the region wound around the lead terminal 13. The point is that it has an expandable and contractible cushioning part 14 made of the wire material 2 provided with.

In the manufacture of the coil member, generally, the coil bobbin 1 is wound around the one lead terminal 13 around the tip of the wire 2 and then the coil bobbin 1 is rotated to a predetermined number of turns and then the wire 2 is wound. The wire rod 2 whose remaining end is wound around the other lead terminal 13 is cut.

Therefore, the buffer portion 14 on the winding start side is formed before the coil bobbin 1 is rotated after the wire 2 is wound around the one lead terminal 13, and the buffer portion 14 provided on the opposite side stops the rotation of the coil bobbin 1. Then, it is formed before the terminal end side of the wire rod 2 is wound around another lead terminal 13.

For example, the buffer portion 14 formed of the coil-shaped wire 2 is formed by winding the wire 2 around the pin 3 as shown in FIG. 2 (a) and then forming the pin 3 as shown in FIG. 2 (b). It is formed by pulling out and changing the orientations of the wire rods 2 on the starting end side and the terminating end side to adjust the front and rear shapes.

In addition, the buffer portion 14 formed of the wire material 2 formed in another wave shape sandwiches the wire material 2 between the split molds 4 for molding as shown in FIG. 2 (c). The split mold 4 has a plurality of grooves 41 that mesh with each other, and as shown in FIG. 2 (d), the buffer member 14 in which the wire 2 is formed in a wave shape is formed.

The buffer portion 14 made of the coil-shaped wire 2 is formed by winding the wire 2 around the lead-out terminal 13 more than a predetermined number of times, and then extraly winding the wire 2 as shown in FIG. 2 (e). Although there are some restrictions by rewinding, it can be easily formed.

The buffer portion 14 may disappear if the tension applied to the wire 2 when the coil bobbin 1 is wound is large. However, it has been confirmed by an experiment that the winding can be sufficiently performed with the buffer portion 14 left without increasing the tension to such an extent.

Note that when the wire rod 2 is wound, the coil bobbin 1 that has been slightly rotated is temporarily stopped, returned to its original position, and then rotated again, so that the tension applied to the buffer portion 14 is the same as that at the start of the first rotation. It has also been confirmed that the number decreases at the start of rotation.

In addition, after the wire 2 is formed into a coil shape or a corrugated shape, the formed part is subjected to heat treatment at an appropriate temperature, so that the wire 2 becomes hard and the buffer portion 14 when tension is applied. The amount of untwisting can be reduced and the elastic range can be improved.

As described above, the coil member of the present invention is made of a wire material which is formed into a coil shape or a corrugated shape and has elasticity between the area of the wire material wound around the coil bobbin and the area of the lead terminal. It has an expandable and contractible buffer part that can absorb the tension of the wire.

Moreover, the coil member of the present invention does not require pushing, bending, or twisting of the lead-out terminal for absorbing the tension of the wire rod, and the expandable and contractible cushioning portion further absorbs the tension of the wire rod from the outside. It has enough elasticity to absorb the impact.

That is, according to the present invention, it is possible to realize a coil member having a cushioning mechanism capable of preventing disconnection without causing a secondary obstacle.

[0033]

[Effect of device]

 As described above, according to the present invention, it is possible to provide a coil member having a buffer mechanism capable of preventing disconnection without causing a secondary obstacle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a coil member according to the present invention.

FIG. 2 is a schematic diagram showing a method of forming a buffer portion.

FIG. 3 is a perspective view showing a structure of a conventional coil member.

FIG. 4 is a partially enlarged view showing a conventional disconnection preventing means.

[Explanation of symbols]

 1 Coil bobbin 2 Wire rod 3 Pin 4 Split type 11 Cylindrical part 12 Flange 13 Lead-out terminal 14 Buffer part 41 Groove

 ─────────────────────────────────────────────────── ───Continued from the front page (72) Inventor, Tan Sen Po, Malaysia, Johor Batu Paha 86400, Kawasan Perindustrian, Paris Raja, Lolong, Satu Number 1, Fujitsuu Component, Malaysia, Cendillian, in Barhad (72) Inventor, Lim Ching Chan, Malaysia Country Johor Batu Paha 86400, Kawasan Perindastrian Paris Raja, Lolong Satu Number 1 Fujitsu Component Malaysia Cendillian Balhad in

Claims (1)

[Scope of utility model registration request] 1. A coil member having a wire bobbin wound around a coil bobbin having a lead-out terminal and the tip end of the wire being wound around the lead-out terminal, and a region wound around the coil bobbin (1) of the wire rod (2). A shock-absorbing part (14) that can expand and contract between the areas wound around the lead-out terminal (13)
And a buffer member (14) formed of a coiled or corrugated wire member (2) to which elasticity is imparted.