JPH03269810A - Structure of magnetic head - Google Patents

Abstract

PURPOSE:To decrease the defects by wire pulling and to improve operating efficiency as well as to facilitate the automation of wiring operations by tightly adhering a tube and a wire by compression bonding and deforming or melting a part of the tube, thereby increasing friction force. CONSTITUTION:The wire 2 connected to a core slider 1 is protected by the 'Teflon(R)' tube 3 and is held to a loading arm 4. This 'Teflon(R)' tube 3 is pressurized by an ultrasonic welder and the bore of the tube is compression bonded to increase the pulling resistance force of the wire. The pressurizing force, pressurizing time and oscillating intensity of these compression bonding conditions are set to the extent of avoiding the damaging of the wire. The bore of the tube is crushed in this way and the inside surface of the tube is brought into tight contact with each other, by which the defects by the wire pulling are decreased and the working efficiency is improved. The automation of the wiring and connecting operations by drawing around wires is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure suitable as a method for fixing a wire used in a magnetic head for a magnetic disk device so that it does not come out of a tube.

[Conventional technology]

As shown in the published practical application 181108/1986, the suitable magnetic head has a structure in which a tube is passed through connected wires, and both ends of the tube are held and fixed by the slit part of the load arm and the central holding part. There is a possibility that it indirectly increases the holding power of the wire. Moreover, as a means that can be easily considered, there is a method of fixing the tube outlet with an adhesive.

[Problem to be solved by the invention]

The above conventional technology does not take into consideration the fixing force of the wire held in the tube, and during the manufacturing of the magnetic head, the wire comes off at just 4)f, causing the wire style at the tip of the magnetic head to collapse and damaging the wire. , resulting in manufacturing defects such as gimbal bending.

In particular, this problem occurs during wire routing and connection work in the head assembly process, making automation difficult.

An object of the present invention is to actively strengthen the fixing force of the wire held in the tube to solve the above problem.

[Means to solve the problem]

In order to achieve the above object, a portion of the tube is compressed and deformed or melted to bring the tube and wire into close contact, thereby increasing the frictional force.

One method for this is to press and vibrate the tube containing the wire from above using an ultrasonic welder, thereby crushing and crimping the tube. The number of crushes and the crushing range may be set depending on the force with which the wire is to be fixed.

Another method is to melt a portion of the tube with hot air and bring it into close contact with the wire, thereby increasing the strength of the wire.

[Effect]

By applying ultrasonic pressure to the part of the tube through which the wire has passed, the inner diameter of the tube is collapsed and the inner surfaces of the upper and lower tubes are brought into close contact. This reduces the wire holding force from about 4,f to 30? It can also be greater than f.

[Example] The present invention will be described in more detail below with reference to Examples shown in the drawings.

FIG. 1 is an external view of the magnetic head, in which a wire 2 connected to a core slider 1 is protected by a Teflon tube 3 and held by a load arm 4. Wire diameter is approximately 50
When a force of about 4.0 μm or more is applied in the direction A in FIG. Touching can lead to wire damage and even manufacturing defects such as gimbal bending. Furthermore, when the tip of the wire is connected to the FPC in a subsequent process, an external pulling force is applied to the wire, and this phenomenon is likely to occur, making it difficult to automate wiring and connection.

Therefore, as shown in FIG. 2, by pressurizing the Teflon tube with an ultrasonic welder, the inner diameter of the tube is crimped and the resistance to pulling out the wire is increased.

Conditions that affect the crimping condition include pressurizing force, pressurizing time, and vibration intensity, and it is necessary to set the crimping conditions so that the amount of tube deformation is such that the wire is not damaged. FIG. 2 shows the crimped state, and FIG. 3 shows its cross section. This work may be done before fixing the tube to the load arm, or afterward, but it is more effective to do it after adjusting the head tip wire style.

The wire fixing part 6 is placed in the position shown in FIG. 4 or in the fifth position.
It is also effective to vary the position shown in the figure depending on the type of head.

Further, as another embodiment, there is a method of melting a part of the tube with hot air 7 or laser as shown in FIG. 6, so that the tube and the wire are partially brought into close contact with each other.

〔Effect of the invention〕

According to the present invention, defects caused by wire tension during magnetic head manufacturing are reduced, and work efficiency is also improved. moreover,
This has the effect of making it possible to automate wire routing and wiring work.

[Brief explanation of drawings]

Fig. 1 is an external view of the structure of the magnetic head, Fig. 2 is a plan view showing an embodiment of the present invention, Fig. 3 is a view of the Teflon tube being crimped by an ultrasonic welder, Figs. 4 and 5. 6 is an explanatory diagram showing the tube crimping position, and FIG. 6 is an explanatory diagram showing another embodiment in which a part of the tube is melted. 1...Core slider 2...Wire 2
′...Wire after deformation 3...Teflon tube 4...Load arm 5...Gimbal 6...Wire fixing part 7...Hot air Part 1 Condolences Part 1

Claims (1)

[Claims] 1. In a magnetic head in which a wire is wired and held in a metal part using a tube as an insulating material, a part of the tube is crimped or melted to fix the wire so that the wire does not come out from the tube. The structure of the magnetic head is characterized by: 2. The magnetic head structure according to claim 1, wherein the wire is fixed by crushing the tube by applying pressure with an ultrasonic welder or heated metal, or by melting the tube with hot air or the like.