JP3419852B2 - Mounting structure of cylinder device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus provided with a cylinder such as a video tape recorder (hereinafter referred to as VTR) or a digital audio tape recorder (hereinafter referred to as DAT), and more particularly to a lower portion by mounting the cylinder. The present invention relates to a cylinder device mounting structure capable of preventing deformation and displacement of a cylinder.

[0002]

2. Description of the Related Art Generally, a cylinder device used in a magnetic recording / reproducing device such as a VTR is composed of a lower fixed cylinder and a rotary cylinder coaxially attached to the lower fixed cylinder, as is well known in the case of a helical scan system. There is. A magnetic head provided on the rotary cylinder records and reproduces signals on and from a magnetic tape that slides helically on the peripheral surfaces of these cylinders.

As described above, the magnetic tape slides helically on the peripheral surface of the rotating cylinder, and the magnetic tape is mounted on the cylinder.
Although it travels around 0 °, it is necessary to accurately position the sliding magnetic tape with respect to the cylinder in order to perform ideal recording / reproduction. Is provided with a lead.

This lead is a step provided on the outer peripheral surface of a lower fixed cylinder fixed to, for example, a deck base plate, and the lower end of the magnetic tape sliding on the peripheral surface of the cylinder is used as this step (lead). It is well known that the sliding magnetic tape is vertically aligned by aligning it.

Therefore, when the lower fixed cylinder provided with such a lead is mounted on the deck main base plate, it is necessary to be very careful because the mounting work requires accuracy for the manufacturer side. In addition, a mounting structure that can be accurately positioned and reliably fixed is essential.

7 and 8 show a mounting structure of a cylinder device in the prior art, FIG. 7 is a perspective view showing a schematic structure of the cylinder device, and FIG. 8 is a side view of the cylinder device after the mounting is completed. .

As shown in FIG. 7, reference numeral 1 is a deck main base plate (hereinafter referred to as main base) provided inside a magnetic recording / reproducing apparatus such as a VTR. A cylinder base 2 formed by the above and mounting guide holes 1a and 1b are provided. The cylinder base 2 is provided with a plurality of cylinder receiving portions 2a on which the lower end of the fixed cylinder 3 is mounted, at predetermined positions.

A plurality of rough position regulating guide portions 2b for roughly positioning when the fixed cylinder 3 is mounted are provided between the cylinder seat portions 2a, and are arranged on the outer periphery of the cylinder base 2. It is provided and is formed so as to project upward.

A rotary cylinder 31 mounted coaxially with the fixed cylinder 3 mounted at the same time as being roughly positioned by the rough position regulation guide portion 2b and mounted on the cylinder seat portion 2a is arranged in the upper portion. The rotary cylinder 31 and the fixed cylinder 3 form a cylinder device. Although not shown, the shaft of the rotary cylinder 31 is inserted into the fixed cylinder 3 and is connected to a driving means for rotating the rotary cylinder 31.

The fixed cylinder 3 has a mounting groove 3a cut out on the outer peripheral surface at the lower end, and a lead 3b on the outer peripheral surface. This mounting groove 2a
Is a groove for engaging the mounting member members 4 and 6 each having a locking portion that is formed by bending the tip end portion. The engaging portions of the mounting member members 4 and 6 are engaged with the mounting groove 2a, and holes 4a and 6a respectively provided in the mounting member members 4 and 6 and mounting guide holes for the main base 2 are provided. By screwing 1a and 1b with screws 5 and 7, respectively, the fixed cylinder 3 can be locked on the cylinder base 2 as shown in FIG. It can be fixed on top.

Next, a method of mounting such a cylinder device will be described. In addition, in this example, it is assumed that the two fitting members are used.

First, as shown in FIG. 7, the fixed cylinder 3
Is lowered from above the cylinder base 2 as shown by the arrow in the figure, and is roughly positioned by the rough position regulation guide portion 2b of the cylinder base 2.
It mounts on each seat 2a.

At this stage, the fixed cylinder 3 is substantially positioned on the cylinder base.

Then, the respective locking portions formed at the tip end portions of the mounting member members 4 and 6 are engaged with predetermined positions of the mounting groove 3a of the fixed cylinder 3 and the state is maintained. The mounting member members 4 and 6 are laid in the mounting guide holes 1a and 1b of the main base 1, respectively.

Then, the holes 4a and 6a respectively provided in the fitting members 4 and 6 and the mounting guide holes 1a and 1b provided in the main base 1 are inserted using screws 5 and 7, and screwed. To meet. At this time, as a work order for screwing the mounting bracket members with the screws 5 and 7, one of the mounting bracket members is performed first, and then the screw is screwed to the other mounting bracket member. As a result, the fixed cylinder 3 can be fixed on the cylinder base 2 as shown in FIG. 8, and the mounting work is completed.

By the way, in the mounting structure of the cylinder device as described above, when the fixed cylinder 3 is mounted by the mounting bracket members 4 and 6, screws 5 and 7 are used for these mounting bracket members 4 and 6. There is a case where the fixed cylinder 3 is adversely affected by the influence of the screwing.

For example, as shown in FIG. 9, when one of the two mounting member members 4 and 6 is mounted first, the mounting member member 4 is first mounted as described above. As described above, the mounting metal member 4 and the main base 1 are screwed with each other using the screw 5, but in this case, the mounting metal member 4 which is naturally engaged with the mounting groove 3a of the fixed cylinder 3 is used. Propulsive force F1 (arrow F1 in the figure) acts on the locking portion so as to press the mounting groove 3a onto the cylinder seat portion 2a as the screw 5 is screwed.

Therefore, the pressing force of the propulsion force F1 causes the outer portion of the cylinder seat portion 2a to be slightly crushed, and the inner portion of the cylinder seat portion 2a which is not crushed is changed. , As shown by a point e in the figure, a portion which becomes a virtual fulcrum is formed.
As a result, the other end of the fixed cylinder 3 is lifted in the direction of arrow A shown in the figure with the virtual fulcrum e as a fulcrum.

After that, when the other mounting metal member 6 is mounted using the screw 7, the engaging portion of the mounting metal member 6 receives the cylinder groove 3a in the cylinder when the screw 7 is screwed. The fixed cylinder 3 that has been pressed by the pressing force F2 that is pressed against the seat portion 2a and is lifted by this pressing force F2
Will be returned to the specified mounting position.
When the fitting member 7 is completely screwed and the fitting member 7 is attached, there is a disadvantage that the fixed cylinder 3 is at least deformed as shown in FIG.

Therefore, the lead 3b provided on the fixed cylinder 3 is also deformed due to this deformation, and when the magnetic tape is slid on the deformed lead 3b, the tape running performance is remarkable. It will result in an adverse effect.

[0021] Further, such a problem is unavoidable because the operation as described above occurs regardless of which of the mounting bracket members 4 and 6 is mounted first. The current situation.

Further, the restricting force of the fixed cylinder 3 by the mounting member members 4 and 6 is sufficient in the axial direction of the fixed cylinder 3 by screwing with the respective screws 5 and 7. However, for the coaxial right angle direction,
For example, as shown in FIG. 11, since there is a play dimension l (shown in the figure) between the rough position regulating guide portion 2b for roughly positioning the fixed cylinder 3 and the fixed cylinder 3, a positional shift occurs due to an impact load. It turns out that it is not enough.

The above-mentioned rough position regulation guide portion 2b fits the fixed cylinder 3 and roughly positions it, but in order to secure the fitability of the fixed cylinder 3, it must be provided larger than the outer diameter of this fixed cylinder. Therefore, the play size 1 as described above is generated.

Therefore, as shown in FIG. 11, the fixed cylinder 3 is displaced by an amount of the play dimension l between the approximate position regulation guide 2b and the mounting member members 4 and 6, for example, in the direction perpendicular to the axis against an impact load. Occurred, and the dotted line part 3 in the figure
As shown in 0, there is a problem that the fixed cylinder 3 cannot be attached at a proper position.

Therefore, in such a conventional mounting structure of the cylinder device, there is a problem that the magnetic tape is displaced in the X position and linear fluctuation occurs, that is, the performance is significantly deteriorated.

[0026]

As described above, in the conventional mounting structure of the cylinder device, when the mounting base for fixing the fixed cylinder is mounted on the cylinder base which is outsert-molded on the main base using, for example, two mounting bracket members. When either one of the mounting bracket members is screwed first by using a screw, the outside of the cylinder seat portion arranged on the cylinder base is affected by the pressure of the screw. The portion changes to a state in which it is slightly crushed, and the inner portion of the cylinder seat that is not crushed acts as a virtual fulcrum, and the other end of the fixed cylinder is lifted. After that, when the other mounting bracket is screwed together with a screw, the screwing force causes a pressure to be applied to the cylinder seat, which causes it to be lifted. Although the cylinder is mounted at a predetermined mounting position, if the screw is completely screwed and the mounting member is mounted, the fixed cylinder 3 is at least deformed.

Therefore, the lead provided on the fixed cylinder is also deformed due to this deformation, and when the magnetic tape is slid on the deformed lead, the tape running performance is significantly adversely affected. It will result.

Further, the regulation force of the fixed cylinder by the mounting metal member is with respect to the axial direction of the fixed cylinder.
Although it is sufficient to screw each screw together, with respect to the direction perpendicular to the coaxial axis, there is a play size between the rough position guide part for roughly positioning the fixed cylinder and the fixed cylinder. However, there is a problem that displacement occurs, and therefore the fixed cylinder cannot be mounted at the proper position. For example, when the magnetic tape is slid on this cylinder device, the magnetic tape is displaced by the X position. At the same time, there is a problem that linear fluctuation occurs and the performance of the cylinder device is significantly deteriorated.

Therefore, the present invention has been made in view of the above problems. Therefore, even when the fixed cylinder is screwed and mounted on the cylinder base of the main base using the mounting metal member and the screw, the fixed cylinder and the lead are deformed. It is installed without any movement, and it is installed even in the direction perpendicular to the axis without displacement due to impact load.
An object of the present invention is to provide a mounting structure for a cylinder device that can improve the reliability of the cylinder device.

[0030]

According to a first aspect of the present invention, there is provided a mounting structure for a cylinder device according to the first aspect of the present invention, wherein the outer peripheral side surface has a groove portion formed at a lower end portion thereof at a predetermined depth in a radial direction. cylinder and, formed on the main base have contact with seat portion to a bottom surface of the stationary cylinder, the seat portion upon mounting the stationary cylinder is in said stationary cylinder of the groove
The position on the outer peripheral side surface of the fixed cylinder from the end in the axial direction
And the main body of which one end is
Is fixed to the over scan, has a locking portion engaged with the groove of the fixed cylinder to the distal end, a plurality of mounting members for mounting the fixed cylinder to the cylinder base, prior to said engaging portion
The solid from the point of attachment force to serial grooves said seat portion
A mounting member configured so that such a radial center of the side position of the constant cylinder, characterized by comprising a.

The mounting structure of the cylinder device according to the invention described in claim 2, a stationary cylinder having a groove formed at the lower portion a predetermined depth in the radial direction of the outer peripheral side surface, it is formed on the main base the in front Symbol stationary cylinder is mounted
Wherein the center direction of the end of the stationary cylinder of the groove fixation sheet
The seat portion formed on the outer peripheral side surface of the binder
And a position regulation guide portion that contacts the outer surface of the fixed cylinder
A cylinder base having a one end fixed to the front Symbol main base, engagement to be engaged with the groove of the fixed cylinder to the distal end
A plurality of mounting members for mounting the front Symbol cylinder base the stationary cylinder has a stop portion, the engaging portion is pre-Symbol the fixed Siri acting point of attachment force than the previous SL seat portion to the groove
Is configured in a position and such so that the Sunda radial center side of the Rutoto
By the engagement with the groove,
The side surface is brought into contact with the position regulating member so that the fixed cylinder is fixed.
And a mounting member configured to restrict the position .

The mounting structure of the cylinder device according to the present invention according to claim 3, the claim 1 or a mounting structure of a cylinder apparatus according to claim 2, wherein the engaging portion of the mounting member of the groove of the fixed cylinder At least a portion of the engagement surfaces and is characterized by the Turkey formed in a tapered shape that opens to the seat portion direction.

[0033]

In the present invention, by using the receiving portion and the mounting member provided on the cylinder base, the engaging portion of the mounting member engages with the mounting groove of the fixed cylinder, and the mounting member is used as the main member. When fixed to the base, the action point of the locking portion is provided inside the seat portion, and as a result, a moment acts downward on the other end of the fixed cylinder. It can be suppressed without lifting the end.

Further, by using the position restricting guide part of the cylinder base and the mounting metal member, the fixed cylinder is moved by the position restricting guide part in accordance with the restricting force of the engaging part of the mounting metal member in the direction perpendicular to the axis. Can be locked.

[0035]

EXAMPLES Examples will be described with reference to the drawings. 1 to 3 show a first embodiment of a cylinder device mounting structure according to the present invention, FIG. 1 is a perspective view showing a schematic structure of the cylinder device mounting structure, and FIG. 2 is a state after completion of the cylinder device mounting. FIG. 3 is an explanatory view for explaining that the positional deviation in the axis-perpendicular direction is prevented, and the same components as those in FIG. 7 are designated by the same reference numerals.

As shown in FIG. 1, reference numeral 1 is a main base provided inside a magnetic recording / reproducing apparatus such as a VTR. In the main base 1, a mounting guide hole 1a,
1b is provided, and a cylinder base 20 formed by outsert molding is provided on the main base 1 which is a feature of this embodiment.

The cylinder base 20 is provided with at least two cylinder seats 20a on which the lower end of the fixed cylinder 3 is mounted, and two of these cylinder seats 20a are provided. Are provided so as to face the center point of the shaft.

Also, these opposing cylinder seats 2
0a is a guide hole 1a for mounting the main base 1,
1b is provided in parallel with, and is engaged with, for example, mounting metal fitting members 40 and 60 mounted in the mounting guide holes 1a and 1b.

The cylinder receiving portion 20a formed as described above has a contact width of the upper end face smaller than that of the prior art, that is, is extended from the outer peripheral surface of the cylinder base 2 and the contact width is increased. Is formed so as to project, so that the pressurizing point by the mounting metal members 40, 60 is located inside the cylinder seat 20a in the radial direction.

Further, between these cylinder seat portions 20a, at least two or more position regulating guide portions 20b for roughly performing positioning when the fixed cylinder 3 is attached are provided. The cylinder base 20 is arranged at a position on the outer periphery of the cylinder base 20 so as to face the straight line connecting the portion 20a and the central axis and to have a predetermined angle R (R in FIG. 1). That is, in accordance with the pressing force P in the axial horizontal direction by the first mounting member 40 shown in the figure,
Has by Una configured to be capable outer peripheral surface of the stationary cylinder 3 is in close contact with the position regulating guide portion 20b of the each.

The position regulating guide portion 20b arranged in this way is arranged on the outer periphery of the cylinder base 20 and is formed so as to project upward by a predetermined dimension.

The cylinder seat portion 2 is fitted at the same time as being roughly positioned by the position regulation guide portion 20b.
A rotary cylinder 31 mounted coaxially with the fixed cylinder 3 mounted on the shaft 0a is arranged at the upper portion, and the rotary cylinder 31 and the fixed cylinder 3 constitute a cylinder device. Although not shown, the shaft of the rotary cylinder 31 is inserted into the fixed cylinder 3 and is connected to a driving means for rotating the rotary cylinder 31.

The fixed cylinder 3 has an odor at its lower end.
Mounting grooves 3 provided in cut-in direction through the outer peripheral diameter surface Te
and a lead 3b on the outer peripheral surface. The mounting groove 3a is Ri first groove der for the second mounting bracket member 40, 60 engages with a locking portion distal end portion is formed by extending to and bent, the upper surface And the bottom and
It has a side wall .

The first and second mounting member members 4 are also provided.
The respective locking portions of 0 and 60 are formed to be slightly longer than the mounting member members 4 and 6 as the prior art shown in FIG. 7, for example, and the wall of the mounting groove 3a of the fixed cylinder 3 is formed.
Surface engages and the stationary cylinder 3 so as to press the arrow P direction shown in the figure, is configured to be able to restrict relative axial perpendicular direction.

Therefore, the engaging portions of the first and second mounting member members 40 and 60 are engaged with the mounting groove 3a, and the holes 40a provided in the mounting member members 40 and 60, respectively. The fixed cylinder 3 can be locked on the cylinder base 20 as shown in FIG. 2 by screwing 60a and the mounting guide holes 1a, 1b of the main base 2 with screws 5 and 7, respectively. It is possible, that is, the fixed cylinder 3 can be fixed on the main base 1.

Although the hole 40a provided in the first mounting member 40 is screwed onto the main base 1 by the screw 5, for example, the first mounting member 40 can be more effectively. to perform pressing by the axial perpendicular direction, it may be formed the hole 40a in slidable hole as the elongated hole.

Next, the mounting method and operation of such a cylinder device will be described in detail with reference to FIGS. In addition, in this example, it is assumed that two of the fitting members are used.

First, as shown in FIG. 1, the fixed cylinder 3
Is lowered from above the cylinder base 20 as shown by the arrow in the figure, and is roughly positioned by the position regulation guide portion 20b of the cylinder base 20 and is mounted on each cylinder seat portion 20a.

At this stage, the fixed cylinder 3 has at least two position regulating guide portions 20b of the cylinder base 20.
It is in a state of being roughly positioned so as to be joined with.

Then, the first and second mounting member members 4
The respective engaging portions formed at the tip end portions of 0 and 60 are engaged with a predetermined position of the attachment groove 3a of the fixed cylinder 3 and the state thereof is maintained, and the attachment fitting members 40, 60 is a guide hole 1a, 1b for mounting the main base 1
Lay them so that they follow each other.

Next, the holes 40a and 60a respectively provided in the fitting members 40 and 60 and the mounting guide holes 1a and 1b provided in the main base 1 are inserted using screws 5 and 7, and screwed. To meet. At this time, as a work order of screwing the mounting metal members 40 and 60 using the screws 5 and 7, for example, both the mounting metal members 40 and 60 are preliminarily fastened with the screws 5 and 7, and finally, Screw the first mounting member 40 with the screw 5 to complete the mounting work.

[0052] By this way in the case of performing the mounting operation using the mounting structure of the cylinder apparatus of this embodiment, the first use of the cylinder seat portion 20 a provided at least two cylinders base 20, for example, When the first mounting member 40 is screwed by the screw 5 and the pressure F is applied, for example, as shown in FIG. 2, the fulcrum of the pressure F applied to the locking portion of the first mounting member 40. Since e exists on the inner side in the radial direction of the cylinder seat portion 20a, a moment acts on the other end of the fixed cylinder 3 in the direction of the arrow B (downward) in the figure, that is, as in the prior art. It is possible to prevent lifting up. Therefore, even when the other, for example, the second mounting metal member 60 is screwed and mounted using the screw 7, the pressure fulcrum e by the locking portion of the second mounting metal member 60 is the cylinder as in the above case. because of radially inward from the seat portion 20 a, it is possible to reliably lock the attachment-like groove 3a and the cylinder seat portion 2 0a of the fixed cylinder 3, moment in a downward direction works, resulting fixed The cylinder 3 can be fixed without deformation. That is, the leads provided on the fixed cylinder 3 can also be attached without deformation.

Further, in this embodiment, as shown in FIG. 3, the tip of the first mounting member 40 is fixed to the fixed cylinder 3.
By making contact with the side surface of the mounting groove 3 of, the regulating force P acts in the direction perpendicular to the axis , and at the same time, with this regulating force P, the fixed cylinder 3 and the fixed cylinder 3
And two position regulating guide portion 20b opposed at a predetermined angle to be bonded to the outer peripheral surface can be reliably brought into close contact, and thereby, for example, when an impact load is applied also causes a positional deviation of the stationary cylinder 3 No longer letting
It is possible to prevent X position variation or linear variation.

Therefore, according to the present embodiment, it is possible to solve the problems of the mounting structure of the cylinder device as the prior art, as well as the productivity of the cylinder device and the cylinder without increasing the number of parts. The cylinder can be reliably mounted on the main base without affecting the various performances of the device.

[0055] Figures 4 and 5 show a second embodiment of a mounting structure of a cylinder apparatus according to the present invention, further exists inside pressure point by the locking portion is effectively cylinder seat portion of the mounting bracket member Therefore, the same components as those in the above-described embodiment are designated by the same reference numerals, and only different portions will be described. Figure 4 is an improvement over the mounting bracket member 40 shown in FIG. 1, characterized in that pressure point e by the locking portion of the collected with bracket member 41 is configured to present reliably inside the cylinder seat portion 20a I am trying.

[0056] The mounting bracket member 41, as well as that having a locking portion which likewise tip and mounting bracket member 40 is formed by extending to and bent as shown in FIG. 1, the locking portion is more It is bent deeply and the tip of the locking portion is formed downward. Therefore, the tip portion of the locking portion is joined to the mounting groove 3a at the pressing point e and the point where the regulating force P is applied when engaging with the wall surface of the mounting groove 3a of the fixed cylinder 3. become.

Further, since the engaging portion of the mounting member member 41 is bent downward as described above, the tip of the engaging portion can be reliably joined to the bottom surface of the groove 3c. In addition, the regulation force P in the direction perpendicular to the axis can be effectively applied.

Therefore, according to such a structure, when the fixed cylinder 3 is mounted using the mounting member 41, the engagement of the mounting member 41 against the pressing force F caused by the screwing of the screw 5 is surely performed. The stop portion pressurizes the inside of the cylinder seat portion 20a, and as a result, a moment acts in the direction of arrow B as shown in the figure without lifting the other end of the fixed cylinder 3 as in the above embodiment. As a result, even when the other mounting member is attached, the fixed cylinder 3 can be attached without deformation, that is, the lead 3b can also be attached without deformation.

Further, the locking portion of the mounting member 41 is at a right angle to the shaft.
Since the regulation force P in the direction can be effectively urged, the two position regulation guides 20b are provided as in the above embodiment.
(See Fig. 1)
It is also possible to prevent displacement in the direction perpendicular to .

In this example, since the engaging portion of the mounting metal member is bent downward, it has a stronger biasing force than a flat mounting metal member, and when it is screwed together, Of course, can be attached more effectively.

On the other hand, FIG. 5 shows a modification of the mounting groove of the fixed cylinder. For example, regardless of the bending accuracy of the mounting metal member, the pressing point by the locking portion of this mounting metal member is used as the cylinder seat. It is characterized in that it is configured so that it can exist inside the part.

The mounting groove 3c is mounted on the mounting groove 3c shown in FIG.
The bottom of the groove 3a for rake is cut diagonally.
As the width of the groove 3a increases toward the tip of the ball
The tip of the bottom surface is tapered. Therefore, when the locking portion of the mounting member 42 is engaged with the mounting groove 3c, the pressing point e pressed by the locking portion is tapered at the base end (groove portion) as shown in the figure. It will be provided at a position located 3c end side side of), this
The fixed cylinder 3 from the cylinder seat 20a
It is possible to pressurize the cylinder base 20 at the center inwardly.

[0063] Further, the bottom surface of the mounting groove 3c, since it has a horizontal plane over the side surfaces of the groove 3c from the tapered proximal end, that the locking portion of the mounting bracket member 42 is securely joined In addition, since the tip of the locking portion can be reliably joined to the side surface of the groove 3c , the restriction force P in the direction perpendicular to the axis can be effectively applied.

Therefore, according to this structure, similarly to the above, the locking portion of the mounting member 41 reliably presses the inner side of the cylinder seat portion 20a against the pressing force F caused by the screwing of the screw 5. It can be pressed, and in the direction perpendicular to the axis
Since it is possible to effectively apply the regulation force P of No. 3, it is apparent that the same effect as in the above-mentioned embodiment can be obtained.

FIG. 6 shows a third embodiment of the mounting structure for a cylinder device according to the present invention. In addition to the structural requirements shown in FIG. 1, it is more effective to use a stopper member outside the first mounting member. It shows the case where various attachments are performed.

FIG. 6A is a perspective view showing a schematic structure of the mounting structure of the cylinder device in the present embodiment. As shown in the figure, the main mounting member 43 is connected to the end of the main mounting member 43. A stopper member 8 is provided on the base 1, and further, all the lower ends of the mounting groove portions 3d of the fixed cylinder 3 are formed in a tapered shape so that the inside is a slope.

As shown in FIG. 6B, the stopper member 8 engages the first mounting member member 43 with the mounting groove portion 3d, and at the same time, the mounting guide hole 1a of the main base 1.
(See FIG. 1) When laying along (see FIG. 1), the first mounting member member 43 can be guided, and when the screw 5 is screwed to the main base 1, the screw can be screwed. The outside of the mounting member 43 can be supported so as to prevent the positional displacement due to.

Further, since the lower end of the mounting groove 3d is formed in a taper shape, one point of contact is provided with respect to the slope of the groove 3d in which the engaging portion of the mounting metal member 43 is formed in a taper shape. Can be joined.

Therefore, according to such a configuration, when the first mounting member member 43 is screwed and mounted by the screw 5, the stopper member 8 is provided,
With the pressurization due to the screwing of the screw 5, the mounting bracket member 43
At the same time the outer is supported in the regulating force P in the axial direction of the pressing force F and the axis as the <br/> perpendicular effectively can be energized, also provided mounting groove 3d is tapered because it is, and a regulating force P of the pressing force F and the axis perpendicular direction of the axial direction can be added at a point in one place. As a result, before
As in the first embodiment, the locking portion of the mounting member 43 is used.
By the regulation force P, the fixed cylinder 3 is regulated in two positions.
It can be joined in close contact with the guide portion 20b.
It can be securely fixed to the cylinder base.

In this embodiment, the stopper member may be formed by, for example, outsert molding on the main base, or it may be formed as a separate member and fixed to a predetermined position on the main base. Is also good.

Further, in the embodiment of the present invention, the helical scan method has been described in the mounting structure of the cylinder device, but the present invention is not limited to this, and for example, a vertically fixed cylinder device which is not a rotary type may be used. It can be applied to the mounting structure of the cylinder device.

[0072]

As described above, according to the present invention, the fixed cylinder can be surely mounted on the cylinder base without increasing the number of parts, and the fixed cylinder is deformed by mounting the mounting metal member. Can be prevented. That is, it is possible to prevent the lead provided on the fixed cylinder from being deformed.

Further, the positional deviation in the direction perpendicular to the axis of the fixed cylinder can be also prevented, and thus the manufacturability and various performances of the cylinder device are not hindered and the reliability is improved. It is obvious that a high cylinder device can be obtained.

[Brief description of drawings]

1 to 3 show a first embodiment of a cylinder device mounting structure according to the present invention, and FIG. 1 is a perspective view showing a schematic configuration.

FIG. 2 is a side view of the cylinder device shown in FIG. 1 after completion of mounting.

FIG. 3 is an explanatory view for explaining preventing the positional displacement of the fixed cylinder shown in FIG. 1 in the direction perpendicular to the axis.

4 and 5 show a second embodiment of a mounting structure for a cylinder device according to the present invention, and FIG. 4 is a side view of the cylinder device showing a case where the first mounting member member is improved.

FIG. 5 is a side view of the cylinder device showing a case where the lower end of the mounting groove portion of the fixed cylinder is formed in a tapered shape.

FIG. 6 shows a third embodiment of the mounting structure for a cylinder device according to the present invention, in which a stopper member for supporting the first mounting member is provided and all lower ends of the cylinder mounting groove are tapered. The block diagram which shows the case where it formed.

FIG. 7 is a perspective view showing a schematic configuration of a conventional cylinder device mounting structure.

8 is a side view of the cylinder device shown in FIG. 7 after completion of mounting.

FIG. 9 is an explanatory view explaining an operation principle when the cylinder device is attached using the attachment structure shown in FIG. 7;

FIG. 10 is a side view of the cylinder device showing a deformed state of the fixed cylinder when mounted by the mounting method according to FIG.

FIG. 11 is an explanatory view for explaining the positional displacement of the fixed cylinder with respect to the axis-perpendicular direction when mounted using the mounting structure of the cylinder device shown in FIG. 7.

[Explanation of symbols]

1 ... Main base 1a, 1b ... Guide holes for mounting 3 ... Fixed cylinder 3a ... Mounting groove 3b ... Lead 5, 7 ... screws 20 ... Cylinder base 20a ... Cylinder seat 20b ... position regulation guide section 40 ... First mounting member 60: Second mounting member member

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 15/61 G11B 33/12

Claims (3)

(57) [Claims] And 1. A stationary cylinder having radially lower portion of the outer peripheral side surface of the groove portion formed at a predetermined depth, on the main base have a seat portion in contact with the bottom surface of the stationary cylinder Is formed, and when the fixed cylinder is placed, the seat portion is in the groove direction toward the center of the fixed cylinder.
A cylinder base formed on the outer peripheral side face and a position of the fixed cylinder from the end of the one end fixed to the main base, has a locking portion engaged with the groove of the fixed cylinder to the distal end, the fixed There are multiple mounting members that attach the cylinder to the cylinder base.
Te, the point of attachment force against the groove of the locking portion and the position in the radial direction center side of the fixed cylinder from said seat portion
Mounting structure of the cylinder device, characterized by comprising a mounting member configured so that such a. 2. A stationary cylinder having radially lower portion of the outer peripheral side surface of the groove portion formed at a predetermined depth is formed on the main base, the groove when mounted previous SL stationary cylinder From the end in the direction of the center of the fixed cylinder
Formed at a position on the outer peripheral side surface of the fixed cylinder
A position guide that contacts the seat and the outer surface of the fixed cylinder.
And a cylinder base with a control guide , one end of which is fixed to the main base, and the other end of which is the fixing frame.
The fixed cylinder having an engaging portion engaged with the groove of the cylinder
There a plurality of mounting members for mounting the front Symbol cylinder base
Te, the locking portion is, the point of attachment forces to the previous SL groove
Position in the radial direction center side of the fixed cylinder than the previous SL seat portion
Is configured so that Do and Rutotomoni, the engagement between the groove
Therefore, the outer surface of the fixed cylinder serves as the position regulating member.
It is configured to abut and regulate the position of the fixed cylinder.
Mounting structure of the cylinder device, characterized by comprising been a mounting member, a.
Mounting structure. 3. A process according to claim 1, wherein at least part is formed in a tapered shape that opens to the seat portion direction Turkey surface that engages the engaging portion of the mounting member of the groove of the fixed cylinder mounting structure of the cylinder apparatus or claim 2, wherein.