JPH04115366U - magnetic disk device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to suppress the phenomenon in which a carriage assembly and a stopper rubber stick together in a magnetic disk drive. [Structure] A feature is that a spiral groove is formed on the outer peripheral surface of the stopper rubber. [Effect] The occurrence of adhesion between the carriage assembly and the stopper rubber can be suppressed easily and at low cost.
The basic functions of the magnetic disk device can be ensured.

Description

[Detailed explanation of the idea]

0001

[Purpose of invention]

0002

[Industrial application field]

This invention is a magnetic device used as an information storage device in digital computers, etc. This invention relates to a disk drive.

0003

[Conventional technology]

A magnetic disk device includes a magnetic disk recording medium for recording data, and a magnetic disk recording medium for recording data. A magnetic head for accessing a magnetic disk and reading and writing data on it. Be prepared. The magnetic head is carried on a swingable carriage assembly. The swing range of this carriage assembly, especially the non-operation of the magnetic disk drive. The initial position of the carriage assembly when the carriage stopper mechanism It is now regulated by.

0004 In large magnetic disk drives, the carriage stopper mechanism is ・Equipped with a stopper assembly consisting of rubber covered with a metal collar, this stopper -The assembly is supported by a leaf spring to absorb shock. medium sized Leaf springs are no longer used in magnetic disk drives.

[0005] Incidentally, in recent years, magnetic disks have been used as a means of downsizing magnetic disk devices. The various mechanisms of devices are being simplified, and the carriage stopper mechanism is also being simplified. Not an exception. For this reason, the carriage stopper mechanism of small magnetic disk drives The metal collar mentioned above has also been discontinued, and the carriage assembly Part of the carriage assembly comes into direct contact with the stopper rubber. It is designed to restrict the non-operating position of the

[0006]

[Problem that the idea aims to solve] Carriage assembly and stop mechanism with metal collar Unlike the metal-to-metal contact between the In the topper mechanism, the contact between the carriage assembly and the stopper is metal. - to - rubber contact. As a result, the temperature and humidity conditions of the magnetic disk drive when it is not operating are Depending on the situation, the carriage assembly and stopper rubber may stick together. may occur and the carriage assembly may not operate when the device is activated. There was a risk that basic operational disorders such as these would occur.

[0007] The purpose of the present invention is to suppress the above-mentioned adsorption phenomenon by simple means. It may be possible to develop a magnetic device that has the same performance as the conventional technology and can be manufactured at the same cost. The objective is to provide disk devices.

[0008]

[Structure of the idea]

[0009]

[Means to solve the problem]

In order to solve the above problem, this invention reads and writes data to a magnetic disk recording medium. a swingable carriage assembly carrying a magnetic head for A stopper rubber that cooperates with the carriage assembly to regulate its swing range. In a magnetic disk drive having a helical shape on the outer peripheral surface of the stopper rubber It is characterized by having grooves formed therein.

0010

[Effect]

By forming a spiral groove on the outer circumferential surface of the stopper rubber, the carriage The contact area between the assembly and the stopper rubber is reduced, and the adsorption phenomenon between the two is reduced. Occurrence is suppressed.

[0011]

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

0012 FIG. 1 shows a magnetic disk device according to an embodiment of the present invention. The storage device 1 has a conventional base plate 3 and a magnetic disk 5 as a recording medium. is rotatable relative to the base plate 3 by a known rotary drive means (not shown). Supported. Carriage assembly 7 is centered on pivot 9 in accordance with known manner. It is supported on the base plate 3 so as to be able to swing as A magnetic head 11 for reading and writing is located at one end of this carriage assembly 7. It is supported by Due to the swinging of the carriage assembly 7, the magnetic head 11 is moved to a desired position with respect to the magnetic disk 5.

[0013] The carriage assembly 7 has a portion 1 extending on the side opposite to the magnetic head 11. 3 (hereinafter referred to as the stopper arm). This stopper arm 13 is In cooperation with the cylindrical stopper rubber 15 fixed to the base plate 3, the carrier The swing range of the edge assembly 7 is regulated. This stopper One function of the rubber 15 is to prevent abnormalities from occurring in the seek control of the carriage assembly 7. to prevent the carriage assembly from protruding from the designated area, such as when The objective is to limit the range of swing of the carriage assembly while mitigating the impact. The other function of this stopper rubber 15 is to prevent the magnetic disk device from operating as shown in FIG. At times, the magnetic head 11 is moved to a preset area (innermost circumference CSS) of the magnetic disk 5. zone, etc.) by contacting the stopper arm 13 to hold the carriage in the This is to position the assembly 7 in the rotational angular direction. Therefore, the stopper If the stopper rubber 15 and the rubber stopper 13 are left in contact for a long time, the temperature will increase. Depending on the temperature/humidity conditions, etc., a phenomenon may occur where the two adhere to each other, and in that case, It is understood that the function as a device is lost.

[0014] As shown in FIG. 2, according to the present invention, the outer peripheral surface of the stopper rubber 15 has a spiral shape. A groove 17 is formed. Since these grooves 17 are formed, the stopper arm 1 The contact surface between 3 and the stopper rubber 15 is shown by hatching in Figure 2. , the contact area is reduced. between the stopper arm 13 and the stopper rubber 15 Since the contact area has a dominant influence on the adsorption phenomenon, this invention reduces the contact area. By reducing the amount, the adsorption phenomenon can be significantly suppressed. On the other hand, the stopper ・If the depth of the groove 17 is made shallower than the overall thickness of the rubber 15, the same impact absorption as before can be achieved. Functionality can be ensured.

[0015] Considering the positioning accuracy of the magnetic head and ease of assembly, the stopper and rubber The groove 17 on the outer periphery of the rim 15 is preferably formed in a spiral shape as described above. less than The reason for this will be explained with reference to FIG.

[0016] Figure 3 shows the grooves on the outer periphery of the stopper rubber 15 in the vertical direction (the axis of the cylindrical stopper rubber). The stopper arm 13 and the stopper are assumed to be formed in the direction parallel to the line) ・It shows two types of contact states with the rubber 15: the stopper arm 13 and the stopper ・When the rubber 15 comes into contact with the state shown in Figure 3 (A) and when it comes into contact with the state shown in Figure 3 (B) In this case, there is a deviation of △t in the position of the stopper arm 13, causing the magnetic head to It is not possible to position at a fixed position (CSS zone).

[0017] In addition, when the groove 17 is formed in the horizontal direction, the outer peripheral surface of the stopper rubber 15 is Due to slight variations in the downward direction, the contact area changes and a certain adsorption suppression function is achieved. It is conceivable that it may not be possible to secure the stopper arm 1. 3 becomes thin, the stopper arm may fall into the groove. Therefore, the magnetic head can be positioned at a fixed position as in the case of longitudinal grooves. I can't.

[0018] In this way, the groove 17 on the outer periphery of the stopper rubber 15 is formed in a shape other than a spiral shape. In some cases, considerable positioning accuracy is required for assembly, making it difficult to maintain conventional costs. I know I can't hold it.

[0019] If the groove 17 is formed in a spiral shape according to the present invention, this inconvenience can be avoided. Therefore, no matter what corner position the stopper rubber 15 is installed, the stopper Even if there is slight variation in the top and bottom of the rubber outer circumferential surface, the contact shown by the hatching in Figure 2 can be maintained. Since the area only moves in parallel in the vertical direction, the contact area is always kept constant. be able to. In addition, even if the stopper arm 13 becomes thin, the stopper arm 13 The pa arm will not fall into the groove. Therefore, the magnetic head can be positioned at a fixed position. can be used.

[0020] Above, an embodiment in which the present invention is applied to a magnetic disk device has been described. The invention is also applicable to all other devices with similar mechanical mechanisms.

[0021]

[Effect of the idea]

As described above, the present invention has a spiral groove formed on the outer circumferential surface of the stopper rubber. This suppresses the occurrence of adhesion between the carriage assembly and stopper rubber. However, the basic functions of the magnetic disk device can be ensured. Moreover, this invention The structure can be realized simply and at a cost comparable to the prior art.

[Brief explanation of drawings]

FIG. 1 is a plan view of a magnetic disk device according to the present invention.

2] FIG. 2 is a side view taken along the direction of arrow II in FIG. 1. [FIG.

[Fig. 3] Fig. 3 is a plan view taken along the direction of arrow III in Fig. 2, and shows the relationship between the stopper arm and the stopper rubber, assuming that the grooves on the outer periphery of the stopper rubber are formed in the vertical direction.
Indicates the contact status of species.

[Explanation of symbols]

1: Magnetic disk device 5: Magnetic disk 7: Carriage assembly 11: Magnetic head 13: Stopper arm 15: Stopper rubber 17: Stopper/groove on the rubber outer periphery

Claims (1)

[Scope of utility model registration request] 1. A swingable carriage assembly carrying a magnetic head for reading and writing data on a magnetic disk recording medium, and a stopper rubber that cooperates with the carriage assembly to regulate its swing range. 1. A magnetic disk device comprising: a helical groove formed on the outer circumferential surface of the stopper rubber.