JPH08315521A - Guide support for head - Google Patents

Abstract

PURPOSE: To fix a guide member for optical head surely to a chassis without causing any rattling in the direction normal to the surface of the chassis. CONSTITUTION: The both ends of a guide shaft 9 is inserted into a moving hole 8a of moving base 8 for supporting an optical head H and fixed to a bracket 4. A support 22 has a recess 24 opening in Y direction. A guide shaft 10 is inserted into a supporting hole 23 of a support 21 and turned about a supporting hole 23 in the planar direction of chassis 1 before being fitted in the recess 24. The guide shaft 10 is stopped in the recess 24 by means of a stop screw 25 not to come out. Movement of the guide shaft 10 in Z direction is blocked by means of the recess 24. When the guide shaft 10 is turned in the Y direction, it is fitted in the moving groove 8a of moving base 8 which can be built in simultaneously with the guide shaft 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a device provided with an optical head such as a CD (compact disc) player, an MD (mini disc) player, an optical memory device, or a read or write head other than the optical means. The present invention relates to a device for supporting a head guide for movably guiding the head.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a drive unit for a CD player as a conventional example with a back surface of the mechanism chassis facing upward, and FIG. 5 is a partial perspective view of a mechanism chassis showing another conventional example. FIG. 6 is a side view in the direction of arrow VI in FIG. 4. In the drive unit shown in FIG. 4, the compact disc D is mounted on the turntable 2 on the front surface side of the mechanism chassis 1. A spindle motor 3 is fixed to the back surface side (top surface side in FIG. 4) of the mechanism chassis 1, a drive shaft of the spindle motor 3 projects toward the front surface side of the mechanism chassis 1, and the turntable 2 is fixed to the drive shaft. ing.

A bracket 4 made of hard synthetic resin is fixed to the rear surface of the mechanism chassis 1. The bracket 4 supports a tracking motor 5, a gear train 6 that reduces the power of the motor 5, and a feed screw shaft 7 that is rotationally driven by the deceleration power of the gear train 6. A pedestal 4a that supports the spindle motor 3 is integrally formed with the bracket 4. An optical head H having an objective lens L facing the disc D is mounted on a moving base 8, and the moving base 8 is guided by a pair of guide shafts 9 and 10 installed in parallel with each other. A moving hole 8a formed on one side of the moving base 8 is movably guided by a guide shaft 9, and a moving groove 8b formed on the other side of the moving base 8 is guided by the other guide shaft 10. To be done.

The one guide shaft 9 is inserted into the support hole 4c of the support 4b formed on the bracket 4, and the other end is supported by another support formed on the bracket 4. In the conventional example shown in FIG. 4, another hard synthetic resin bracket 12 is fixed to the back surface of the mechanism chassis 1, and a pair of support members 12a and 12b are attached to the bracket 12.
Are integrally formed. A support hole 12c is formed in one of the supports 12a, and a recess 12d is formed in the other support 12b so as to open in the vertical direction with respect to the mechanism chassis 1. The guide shaft 10 has a support hole 12c at the left end in the figure.
The right end is inserted into the recess 12d. Then, the leaf spring 13 bent into a crank shape is
Mounting screw 1 screwed into female screw hole 1a of mechanism chassis 1
The guide shaft 1 fixed by 4 and inserted into the recess 12d
0 is prevented from coming off by the leaf spring 13.

A female screw member 16 is supported on the moving base 8 via a leaf spring 15, and the female screw member 16 is screwed onto the feed screw shaft 7. When the feed screw shaft 7 is rotated by the tracking motor 5, a moving force is given to the female screw member 16, and the moving base 8 is moved.
The optical head H is guided by the guide shafts 9 and 10 to move in the radial direction (X direction) of the disk D. At this time,
The moving base 8 moves in the X direction with the guide shaft 9 as a moving reference. Then, the disk D is irradiated with the laser light from the objective lens L, and the reflected return light is detected by the optical head H. Further, in another conventional example shown in FIG. 5, a flat head screw 17 having a screw head 17a having a large diameter is used in place of the leaf spring 13 shown in FIG. The special flat head screw 17 is screwed into the female screw hole 1b of the mechanism chassis 1, and at this time, the screw head 17a contacts the surface of the guide shaft 10.
The guide shaft 10 is supported so as not to come out of the recess 12d.

[0006]

The leaf spring 13 shown in FIG.
In the supporting device using, the end of the guide shaft 10 inserted into the recess 12d is elastically pressed in the vertical direction with respect to the mechanism chassis 1 by the leaf spring 13. Therefore, even if the guide shaft 10 has a tolerance of straightness or the pair of supports 12a and 12b has a tolerance of molding dimensions, the force for pressing the guide shaft 10 against the mechanism chassis 1 is not applied to the leaf spring 13. The guide shaft 10 is absorbed by the deformation.
It is prevented that a large bending stress acts on the mechanism chassis 1 when fixing the. Therefore, distortion of the mechanism chassis 1 can be prevented, and the rotation axis of the turntable 2 and the objective lens L can be prevented.
The parallelism with the optical axis of can be maintained.

However, in an actual device, the mechanical chassis 1
In many cases, the back surface (the surface facing upward in FIG. 4) is used facing downward. Since the heavy weight optical head H and the moving base 8 are supported on the guide shaft 10, the leaf spring 13 is bent by the guide shaft 10 when the disk player is repeatedly vibrated or subjected to a large impact. There is a possibility that the spring may be plastically deformed due to fatigue of repeated loading, and the guide shaft 10 may rattle in the recess 12d. Further, the leaf spring 13 may be plastically deformed, and the guide shaft 10 may be disengaged from the leaf spring 13. Furthermore, since two parts, the leaf spring 13 and the mounting screw 14, are required, there are disadvantages that the number of parts is large and the manufacturing cost is high.

Next, in the supporting device shown in FIG. 5, since the guide shaft 10 is supported only by the special flat head screw 17,
There are advantages that the number of parts is small, the manufacturing cost can be reduced, and the assembly is easy. However, when the guide shaft 10 is firmly tightened and fixed to the chassis 1 by the special flat head screw 17, when the guide shaft 10 is bent,
The mechanism chassis 1 is distorted by the fixing force at which both ends of the guide shaft 10 are fixed to both the supports 12a and 12b, and as a result, a twist is generated between the rotation axis of the turntable 2 and the optical axis of the objective lens L. It may occur, and the reading accuracy by the optical head H may be reduced. Further, when the resin support 12b is deformed due to a temperature change, or when the repetitive mechanism chassis 1 is vibrated, the extra flat head screw 17 is likely to loosen. When the screw 17 is loosened, the guide shaft 10 rattles in the direction orthogonal to the mechanism chassis 1. As a result, the optical head H is tilted, the optical axis of the objective lens L is tilted, and the reading accuracy is reduced.

In the assembly process of the conventional example, first, the guide shaft 9 is inserted into the moving hole 8a of the moving base 8, and both ends of the guide shaft 9 inserted into the moving base 8 are attached to the bracket 4. Fixed to. Next, the guide shaft 10 is inserted into the moving groove 8b of the moving base 8, and one end of the guide shaft 10 is further inserted into the support hole 12c of the support body 12a. Then, as shown in FIG. 6, the guide shaft 10 is rotated in the vertical direction (−Z direction) with respect to the mechanism chassis 1 with the end portion previously inserted into the support hole 12c as a fulcrum, and then is guided into the recess 12d. Is inserted.

Here, as shown in FIG. 6, the guide shaft 10
Is tilted in the + Z direction with the support hole 12c as a fulcrum, the moving groove 8b of the moving chassis 8 is located in the mechanism chassis 1
The guide shaft 10 is externally inserted in a posture parallel to the surface direction (X direction). Width h of moving groove 8b and guide shaft 1
Since there is almost no difference from the diameter d of 0, the edge portion (a) or (b) of the moving groove 8b strongly hits the guide shaft 10 when the guide shaft 10 is inclined as shown in FIG. At this time, the guide shaft 1 is formed by the edge portion (a) or (b).
When the movement base 8 is moved by being guided by the guide shaft 10 after the assembly is completed, scratches (indentations) are made on the outer peripheral surface of 0,
The scratches hinder the smooth movement of the moving base 8.

The present invention solves the above-mentioned problems of the prior art. The guide member can be supported with a minimum number of parts in the direction perpendicular to the chassis without rattling, and the guide member is scratched during assembly work. It is an object of the present invention to provide a support device for a head guide, which is capable of preventing the above-mentioned problem.

[0012]

SUMMARY OF THE INVENTION According to the present invention, there is provided a head guide in which both ends of a guide member for movably guiding an optical head or another type of head are supported by a support provided on a chassis. In the support device, at least one of the supports is formed with a recess into which the guide member can be inserted in a direction intersecting the guide direction of the head and along a direction along the surface of the chassis. It is characterized in that it is constrained and supported in a direction orthogonal to the chassis. The guide member is, for example, a guide shaft with which the head slides on the outer peripheral surface thereof, or a guide rail with a recess formed therein to which a sliding protrusion provided on the head moves. The width of the recess formed in the support is preferably such that the guide member can be lightly press-fitted without a gap, in order to prevent rattling of the guide member, but the inner width of the recess is smaller than the outer size of the guide member. The structure may be slightly larger, and an elastic body may be interposed between the inner wall of the recess and the outer surface of the guide member.

In the above, the recess is formed in one of the supports, and a hole into which the end of the guide member is inserted in the longitudinal direction is formed in the other support, and one end of the guide member is formed in the hole. It is preferable to have a structure in which the other end is inserted into the recess from the direction along the surface of the chassis. In this case, it is preferable to form a rotation allowance space in the hole formed in the other support so that the guide member can rotate in the direction of the recess with the portion inserted into the hole as a fulcrum.

However, the recesses may be formed in both of the pair of supports, and the guide member may be inserted into both recesses from the direction along the surface of the chassis.

Further, it is possible to provide a retaining means for preventing the end portion of the guide member inserted into the recess from coming out of the recess. The retaining means may be, for example, an adhesive that fixes the guide member in the recess of the support, or a retaining projection is integrally formed at the opening of the recess of the support, and the support is the protrusion. It may be fitted in the concave portion by overcoming. Alternatively, as shown in the embodiments shown in FIG. 1 and subsequent figures, the retaining means may be constituted by a screw member.

Further, according to the present invention, a moving groove that opens in the surface direction of the chassis is formed on the side of the support portion of the head, and at the same time when the guide member is inserted into the recess of the support body. It can be inserted into the moving groove.

[0017]

In the present invention, the support formed on the chassis is
A recess is formed that opens in the plane direction of the chassis and in a direction intersecting or orthogonal to the guide direction of the head,
The guide member is inserted into the recess from a direction along the surface of the chassis. The guide member is restrained in the direction (Z direction) perpendicular to the surface of the chassis by the inner wall of the recess formed in the support. Therefore, the rattling of the guide member due to the plastic deformation of the leaf spring does not occur as in the case where the guide member inserted into the recess is constrained only by the leaf spring as shown in FIG. That is, since the guide member is constrained by the inner wall of the recess of the support in a direction perpendicular to the chassis, this force can be received by the inner wall of the recess of the support made of resin or the like when impact or vibration acts. Becomes
The deformation of the leaf spring unlike the conventional case is not caused. Further, the guide member is held by the inner wall of the recess while being inserted into the recess, and a strong pressing force in the chassis direction due to the tightening force of the screw is applied to the guide member as in the conventional example shown in FIG. Does not work. In other words, the force of the recess to restrain the guide shaft slightly acts on the chassis, but since it is not as strong as the forced tightening force of the screw, the stress on the chassis does not become excessive and the turntable Twisting is less likely to occur at the relative position between the head and the head. In order to minimize the stress applied to the chassis by the guide member, it is preferable to interpose an elastic body in the gap between the inner wall of the recess and the guide member.

By setting the dimensions so that the guide member is lightly press-fitted when it is inserted into the recess, it is possible to prevent the guide member from coming out of the recess when the guide member is inserted into the recess. However, the guide member may be fixed in the recess with an adhesive to serve as a retaining means. Alternatively, as shown in the embodiment, a screw for fixing the bracket integrally formed with the support body to the chassis may be provided near the opening of the recess to prevent the guide member in the recess from coming off.

A hole is formed in one of the pair of supports, one end of the guide member is inserted into the hole from the longitudinal direction, and the guide member is rotated along the surface of the chassis with the insertion end into the hole as a fulcrum. With the structure in which the other end of the guide member is inserted into the recess, the work of attaching the guide member is simplified. At this time, it is preferable to form a rotation allowance space in the hole so that the guide member can rotate along the surface of the chassis. In order to form this rotation allowance space, an inclined surface that gradually opens in the surface direction of the chassis is formed on the inner wall of the hole that is perpendicular to the chassis.

Further, in the case where the moving groove which is opened toward the surface direction of the chassis is formed on the side of the support portion of the head, when the guide member is inserted into the recess of the support member from the surface direction of the chassis. At the same time, the guide member is inserted into the moving groove. That is, the support portion of the head is in a posture in which it does not tilt as shown in FIG. 6, and the guide member is inserted into the moving groove from the side. Therefore, the guide member is not damaged by the edge portion of the moving groove, and the assembling work of the moving groove and the guide member is easy.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an in-vehicle C as an embodiment of the present invention.
FIG. 2 is a perspective view showing a drive unit of the D player, in which the mechanism chassis is shown with its back surface facing upward; FIG. 2A is a partial perspective view of one of the supports viewed from the direction of arrow IIa in FIG. 1; (B) is a partial perspective view of the other support seen from the direction of the arrow IIb in FIG. 1, FIG. 3 shows a mounting operation of the guide member, (a) is a plan view, and (b) is the same figure. (A) is a side view as seen from the arrow b, and (c) is a cross-sectional view taken along the line cc of (a). The drive unit shown in FIG. 1 has the same structure as the drive unit shown in FIG. 4 except for the guide member supporting device which is a feature of the present invention.

The mechanism chassis 1 is made of sheet metal, and a bracket 4 and a bracket 20 made of synthetic resin are fixed to the back surface of the mechanism chassis 1. The movable base 8 on which the optical head H is mounted has a pair of guide shafts 9 as guide members.
And will be guided to 10. One guide shaft 9 is supported by the bracket 4, and the other guide shaft 10 is supported by the bracket 20.
Supported by. The bracket 4 supports the tracking motor 5, the reduction gear train 6, and the feed screw shaft 7,
A female screw member 16 supported by the moving base 8 via a leaf spring 15 is screwed onto the feed screw shaft 7. Further, the spindle motor 3 is fixed to the pedestal 4a of the bracket 4, the drive shaft of which is projected to the front surface side of the mechanism chassis 1, and the turntable 2 is fixed to this drive shaft.

The compact disc D is the turntable 2
It is loaded on top and is rotationally driven by the spindle motor 3. When the compact disc D rotates, the moving base 8 moves from the inner peripheral side to the outer peripheral side of the disc D by the rotational force of the feed screw 7. Then, the disk D is irradiated with the laser light from the objective lens L of the optical head H, the reflected light is detected by the light receiving element in the optical head H, and the signal is read.

Next, the optical head guide support device will be described. One end of one guide shaft 9 is attached to the bracket 4
Is inserted into a support hole 4c of a support body 4b integrally formed with the other end, and the other end is also supported by the support body provided on the bracket 4. A moving hole 8a formed in one side portion of the moving base 8 which is a supporting portion of the optical head H is slidably fitted on the guide shaft 9. A moving groove 8b is formed on the other side portion of the moving base 8. This moving groove 8b is
The opening is opened in a direction (Y direction) that is orthogonal to the guide direction (X direction) of the moving base 8 and is along the surface of the mechanism chassis 1, and the moving groove 8b is slidably inserted onto the guide shaft 10. . That is, the jaws 8c and 8d that sandwich the moving groove 8b sandwich the guide shaft 10 from both sides in the Z direction, and the inner surfaces of the jaws 8c and 8d slide on the guide shaft 10.

The guide shaft 10 is supported by a pair of support members 21 and 22 integrally formed in a resin bracket 20 so as to project toward the rear surface of the mechanism chassis 1.
A support hole 23 in the shape of a bag hole into which one end 10a of the guide shaft 10 is inserted in the axial direction is formed in the one support 21 shown in FIG. 2 (a). The support hole 23 has a rectangular opening, and extends in a direction (Z
Direction), the distance between the inner wall surfaces 23a and 23b facing each other is
The diameter dimension of the guide shaft 10 is almost the same, and the end portion 10a of the guide shaft 10 inserted into the support hole 23 is restrained in the Z direction by the inner wall surfaces 23a and 23b, and is in a light press-fit state or a clearance fit state. Supported by.

The inner wall 23c on one side of the support hole 23 is, as shown in FIG. 3A, a direction orthogonal to the guiding direction of the optical head H and along the surface of the mechanism chassis 1 (Y direction).
Is inclined to. Inside the inclined side inner wall 23c, the guide shaft 10 in a state in which the end 10a is inserted into the support hole 23 has a mounting position shown by a solid line and an inclined position shown by a broken line in FIG. Between them, a rotation allowance space A is formed so that the rotation allowance space A can be rotated by a predetermined angle θ (for example, about 5 degrees). The support 22 includes the other end 10 of the guide shaft 10.
A recess 24 into which b is inserted from the side is formed. As shown in FIG. 2B, upper and lower inner wall surfaces 24 a of the recess 24 are formed.
And 24b face each other in the direction (Z direction) orthogonal to the plane direction of the mechanism chassis 1, and the inner wall surfaces 24a and 24b
The facing interval is set to be substantially the same as or slightly shorter than the diameter dimension of the guide shaft 10 so that the end portion 10b of the guide shaft 10 is lightly press-fitted.

As shown in FIG. 2B, the opening 24d of the recess 24 is a direction orthogonal to the guiding direction (X direction) of the optical head H and along the surface of the mechanism chassis 1 (Y direction). The guide shaft 10 is opened toward the end portion 10b of the guide shaft 10 and is inserted into the recess 24 from the Y direction. The end portion 10b of the guide shaft 10 inserted into the recess 24 has a side inner wall 24c of the recess 24.
Then, the positioning in the Y direction is performed. Figure 2 (a)
Also in the support hole 23 shown in (4), the end 10a of the guide shaft 10 contacts the side inner wall 23d and is positioned in the Y direction. That is, when the guide shaft 10 is inserted into the support hole 23 of the support 21 and is inserted into the recess 24 of the support 22,
Side inner wall 23d of the support hole 23 and side inner wall 24 of the recess 24
The guide shaft 10 is positioned in the Y direction by both c. In addition, as described above, the inner wall surfaces 23a, 23 of the support hole 23
b and the inner wall surfaces 24a and 24b of the recess 24, the guide shaft 1
0 is positioned in the Z direction.

In the above embodiment, the set screw 25 is used as a retaining means for preventing the end 10b of the guide shaft 10 inserted into the recess 23 from coming out of the recess 24 of the support 22 in the Y direction. in use. This set screw 2
Reference numeral 5 denotes a cylindrical positioning head portion 25a and a male screw portion 25b. ) Is screwed on. The set screw 25 is also used as a fixing screw for fixing the bracket 20 to the mechanism chassis 1. The guide shaft 10 inserted into the recess 24 hits the positioning head 25 a of the set screw 25 and is prevented from coming out of the recess 24.

Positioning head 25a of the set screw 25
With the side inner wall 24c of the recess 24, the end 10b of the guide shaft 10 is constrained and positioned so as not to move in the Y direction at all. However, the positioning accuracy of the guide shaft 10 in the Y direction is less important than the positioning accuracy in the Z direction, and the guide shaft 10 moves in the Y direction between the inner side wall 24c of the recess 24 and the positioning head 25a. There is no problem even if there is some misalignment or rattling. That is, the moving hole 8a of the moving base 8 is precisely inserted onto the guide shaft 9 and slides, and the moving base 8 and the optical head H move in the X direction with the guide shaft 9 as a reference. Therefore, the guide shaft 10
, The inner width dimension of the moving groove 8b in the Z direction (jaw 8
If the distance between the inner surfaces of c and 8d) is accurately formed with respect to the outer diameter of the guide shaft 10, the moving groove 8b is positioned and slides in the Z-axis direction. And the moving groove 8b
Has a long shape in the Y direction, the accuracy of movement of the moving base 8 in the X direction does not deteriorate even if the guide shaft 10 is displaced in the Y direction.

Moving base 8 in the drive unit shown in FIG.
In the assembling method, the guide shaft 9 is first inserted into the moving hole 8a of the moving base 8. Then, both ends of the guide shaft 9 are supported and fixed by the bracket 4. Next, FIG.
As shown by the broken line in (a), the end portion 10 of the guide shaft 10 is
a is inserted into the support hole 23 of the support 21 in the axial direction (longitudinal direction). Then, the guide shaft 10 is rotated in the Y direction with the end 10a inserted into the support hole 23 as a fulcrum,
The other end 10b is inserted into the recess 24 formed in the support 22. At this time, since the rotation allowance space A is formed inside the inclined side portion inner wall 23c in the support hole 23, the rotation movement of the guide shaft 10 can be performed without resistance.

Further, in FIG. 3A, when the guide shaft 10 rotates from the broken line state to the solid line state, the guide shaft 10 is moved from the Y direction into the moving groove 8b opened in the Y direction in the moving base 8. Is inserted. Therefore, like the conventional example,
It is not necessary to insert the guide shaft 10 into the moving groove 8b in an unreasonable posture shown in FIG.
The outer peripheral surface of 0 is not damaged.

In the above embodiment, the supports 21 and 2
It is also possible to form recesses 24 that open in the Y direction on both sides so that both ends 10a and 10b of the guide groove 10 can be inserted into the recesses from the Y direction. However, if the structure is such that the end portion 10a of the guide shaft 10 is axially inserted into the support hole 23 and then the other end portion 10b is inserted into the recess 24 as in the above-described embodiment, the work of attaching the guide shaft 10 can be performed. Easy and
Further, since the end portion 10a of the guide shaft 10 is positioned with high precision by the support hole 23, the mounting precision is also improved. Further, since the set screw 25 as the retaining means is provided only in the vicinity of the one support 22, the number of parts is reduced.

Further, the present invention is not limited to a CD player, but is also applied to a device having another optical head, for example, a disc player using a mini disc (MD), and a supporting device for a guide member of a head other than the optical means. It is possible to The guide member is not limited to the round bar-shaped guide shaft, and may be a rectangular bar-shaped guide shaft or a guide rail having a guide groove.

[0034]

As described above, according to the present invention, since the guide member is held in the recess opening in the surface direction of the chassis,
The guide member is securely held in the direction orthogonal to the chassis, and the guide member does not rattle in the direction orthogonal to the chassis due to vibration or impact. Further, since the guide member is not subjected to an unreasonable fixing force such as screw tightening, the chassis is less likely to be distorted.

Further, when the guide member is inserted into the concave portion, if it can be inserted into the moving groove of the support portion of the head at the same time, the assembling work of the support portion of the head and the guide member can be facilitated, and the guide member It won't get scratched.

[Brief description of drawings]

FIG. 1 is a perspective view showing a drive unit of a CD player as an embodiment of the present invention with a back surface of a mechanism chassis facing upward;

2 (a) is a partial perspective view of one support seen from the direction IIa in FIG. 1, and FIG. 2 (b) is the other support IIb in FIG.
Partial perspective view seen from the direction

FIG. 3 is a view showing a work of mounting the guide member,
(A) is a plan view, (b) is a side view of FIG.
(C) is a sectional view taken along line cc of (a),

FIG. 4 is a perspective view showing a drive unit of a conventional CD player with a back surface of a mechanism chassis facing upward;

FIG. 5 is a partial perspective view of a mechanism chassis showing another conventional example,

6 is a side view of FIG. 4 in the direction of arrow VI,

[Explanation of symbols]

 1 Mechanism Chassis 2 Turntable 3 Spindle Motor 4 Bracket 8 Moving Base 8a Moving Hole 8b Moving Groove 9,10 Guide Axis 20 Bracket 21,22 Support 23 Support Hole 24 Recess 25 Set Screw H Optical Head L Objective Lens

Claims (5)

[Claims] 1. A head guide supporting device in which both ends of a guide member for movably guiding a head are supported by a support body provided on a chassis, and at least one of the support bodies is provided with a head guide. A recess into which the guide member can be inserted is formed in a direction intersecting the direction and along the surface of the chassis, and the end of the guide member is constrained and supported in the recess in a direction orthogonal to the chassis. A support device for a head guide, characterized by: 2. A recess is formed in one of the supports, and a hole into which the end of the guide member is inserted in the longitudinal direction is formed in the other support, and one end of the guide member is inserted into the hole. The head guide supporting device according to claim 1, wherein the other end is inserted into the recess from a direction along a surface of the chassis. 3. A rotation allowance space is formed in a hole formed in the other support so that the guide member can rotate in the direction of the recess with a portion inserted into the hole as a fulcrum. Item 2. A support device for a head guide according to Item 2. 4. The head guide according to claim 1, further comprising retaining means for preventing an end portion of the guide member inserted into the recess from coming out of the recess. Support device. 5. A moving groove that opens toward the surface direction of the chassis is formed on the side of the support portion of the head, and the guide member is simultaneously inserted into the concave portion of the support body at the same time. The support device for the head guide according to any one of claims 1 to 4, which is inserted into the moving groove.