JP2542358Y2 - Rotating member mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a tape recorder and the like, and relates to a mounting structure of a rotating member which is easy to assemble and does not come off from a substrate after assembly.

[0002]

2. Description of the Related Art In a tape recorder, a rotation member (rotation transmission gear) which forms a part of the rotation transmission system is provided on a rotation member (rotation lever) to switch the rotation transmission system. In addition, it is often performed to control the transmission of rotation.

Conventionally, this type of rotating member is mounted on a substrate by generally inserting a rotating shaft of the rotating member into a bearing (bearing hole) provided on the substrate from the axial direction. A retaining member (E-ring or split pin, etc.) attached to the rotating shaft in the state
It has been done by attaching.

[0004] The rotation of the rotation member is also performed by constantly pressing the rotation member in a rotation direction by a related member for controlling the rotation of the rotation member.

[0005]

For this reason, the conventional rotating member mounting structure has a problem that the structure for assembling and for urging the rotating member to rotate is complicated.

The present invention has been made in view of the above circumstances, and has a simple structure for assembling and for urging the rotating member to rotate, and after the assembly, the rotating member does not come off the substrate unnecessarily. An object of the present invention is to provide a member mounting structure.

[0007]

SUMMARY OF THE INVENTION The present invention relates to
Set the rotating member at a predetermined angle in both directions from the neutral position
It is rotatable and only contacts the substrate when in the neutral position.
The mounting structure of the rotating member is
Rotating the rotating member to a position deviated from the neutral position.
Urged and the rotating member is positioned in the neutral position.
The rotating member does not separate from the substrate when
And a spring for biasing the spring.
You . Specifically, the rotating member is positioned at a neutral position.
When it is moved against the spring,
To be detachably attached to the substrate, and
The tension member is a tension spring, and the rotating member is in the neutral position.
In the installed state, the rotation member is turned over the rotation support point of the rotation member.
On the substrate positioned on the rotating end side of the moving member and the opposite side
It is characterized by being bridged between the spring hook and
There is .

[0008]

According to the present invention, the neutral position is defined with respect to the substrate.
As a predetermined angle in both directions, and a neutral position
To a rotating member that is detachably attached only when
And a spring is wound around the rotating member.
Is biased to a position outside the neutral position,
When the rotating member is positioned at the neutral position
The rotating member is urged in a direction not to separate from the substrate.
So that the rotating member is intentionally placed in the neutral position against the spring.
Positioning, and then the biasing direction against the above spring
If you do not move the rotating member in the opposite direction,
Can not be removed from. Therefore, once the rotating member
Once mounted on the board, the spring
Inadvertent detachment is effectively prevented . Especially tension springs
In the state where the rotating member is located at the neutral position,
The pivot member pivots over the pivot point of the pivot member.
Hook between the spring hook on the board located on the opposite side
Since it only needs to be handed over, a simple structure prevents the rotating member from falling off
The stop function can be sufficiently exhibited .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is applied to the mounting of a rotation member for mounting a rotation transmission switching gear in a tape recorder. FIG. 1 is a view of a rotation member portion viewed from the bottom side of a substrate, and FIG. It is a bottom view of the rotation state of a moving member. In both figures, reference numeral 1 denotes a tape recorder substrate, which has a substantially fan-shaped opening 2 and an arc-shaped guide hole 3 as shown in FIG.

A projecting wall 4 is provided at the base end of the opening 2. The projecting wall portion 4 is connected to the substrate 1 via the step portions 4a and 4b.
It is one step lower than the upper surface (see FIG. 3). In addition, the tip edge 4c of the protruding wall 4 has a semicircular surface. Opening 2
Has a circular arc surface concentric with the front edge 4c of the protruding wall 4.

The guide hole 3 is located outside the front edge 2 a of the opening 2 and has a circular arc surface concentric with the front edge 4 c of the protruding wall 4. Further, a substantially U-shaped notch 5 is provided at a substantially middle portion of the outer peripheral side edge 3 a of the guide hole 3.

A rotating member 6 is provided on the lower surface of the substrate 1 with a projecting wall portion 4.
Arrow A, with the center O of the arc surface of the tip edge 4c
It is attached so as to be rotatable in the B direction. Rotating member 6
Is a rotating body support lever in a tape recorder that rotatably supports a rotating body (gear) 7 on the lower surface of the distal end portion and displaces the position of the rotating body 7, and has a lever main body 8.

As shown in FIG. 4, the lever body 8 has a substantially square first opening 9 at a substantially middle portion thereof. This first
A substantially square engaging piece 10 is integrally connected to a substantially middle portion of the leading edge of the opening 9. The lower surface of the engagement piece 10 is one step higher than the upper surface of the lever body 8 via the step portion 10a. The engagement piece 10 is slidably inserted into the guide hole 3 through the cutout 5 of the substrate 1, and
(See FIG. 3).

A substantially fan-shaped second opening 11 is provided substantially at the center of the base end of the lever body 8. This second
The inner peripheral edge 11 a of the opening 11 is formed at the tip edge 4 of the projecting wall 4.
An arc surface corresponding to c. An engagement wall 12 is provided along the outer peripheral edge of the second opening 11. The engaging wall 12 is one step higher than the upper surface of the lever body 8 via the step portions 12a and 12b on both sides thereof. The engaging wall 12 overlaps the upper surface of the projecting wall 4 of the substrate 1. The tip edge 4 c of the protruding wall 4 is slidably abuttingly engaged with the inner peripheral edge 11 a of the second opening 11 of the lever body 8. The rotating member 6 can be attached to and detached from the substrate 1 only when in the neutral position shown in FIG.

A spring (reversing spring) 13 is interposed between the substrate 1 and the rotating member 6. The turning member 6 is biased by the spring 13 to a turning position other than the neutral position. When the rotating member 6 is at the neutral position, the rotating member 6 is urged downward in FIG.
The rotating member 6 does not come off the substrate 1 unnecessarily.

An engagement projection 14 is provided on the upper surface of the rotating member 6. As shown in FIGS. 5 and 6, the engaging projections 14 are provided on left and right locking grooves 16a, 16b of the head panel 15 mounted on the upper surface of the substrate 1 so as to be reciprocally movable in the directions of arrows C and D.
Alternatively releasably engages inside.

The magnetic head 1 is provided on the upper surface of the head panel 15.
7 is attached. Then, as shown in FIG. 5, when the head panel 15 moves back in the direction of arrow D and is at the stop position, the magnetic head 17 is separated from the tape 18. Also,
As shown in FIG. 6, when the head panel 15 moves forward in the direction of arrow C and is at the reproducing position, the magnetic head 17 contacts the tape 18.

When the head panel 15 is at the stop position, the engaging projections 14 of the turning member 6 are engaged with the locking grooves 16a and 16b, so that the turning member 6 is turned other than in the neutral position. Fixed in position. The head panel 15 has an opening 2 in the substrate 1 and a guide hole 3 when the head panel 15 is at the reproducing position.
An opening 19 substantially corresponding to the above is provided.

5 and 6, reference numerals 20a and 20b denote capstans located on both sides of the magnetic head 17 and protruding from the upper surface of the substrate 1.

A procedure for mounting the rotating member 6 on the substrate 1 as shown in FIGS. 1 to 3 from the disassembled state shown in FIG. 4 will be described.

First, the center of rotation of the rotating body 7 of the rotating member 6 and the center of the engaging projection 14 pass through the center of the arc of the leading edge 4c of the projecting wall 4 of the substrate 1 and the center of the notch 5. Align with the center line.

Next, the engaging piece 10 of the rotating member 6 is
The rotating member 6 is slid downward in FIG. Thereby, the lower surface of the engagement piece 10 overlaps the upper surface of the substrate 1 via the guide hole 3. At the same time, the lower surface of the engaging wall 12 overlaps with the upper surface of the projecting wall portion 4,
In addition, the leading edge 4 c of the protruding wall 4 abuts on the inner peripheral edge 11 a of the second opening 11. In this state, the rotating member 6 and the substrate 1
The state shown in FIG. 1 is obtained by bridging the spring 13 between the rotating member 6 and the rotating member 6 (neutral state).

When the user releases his / her hand from the rotating member 6 in such a state, the rotating member 6 rotates to a rotating position other than the neutral position as shown in FIG. Thus, the attachment of the rotating member 6 to the substrate 1 is completed.

The rotating member 6 attached to the substrate 1 in this manner is the substrate 1 unless it is in the neutral position shown in FIG.
Can not leave. In particular, since the turning member 6 is urged to a turning position other than the neutral position by the spring 13 and the turning member 6 is pulled in the anti-separation direction by the spring 13, the turning member 6 The mounted state is reliably maintained.

The rotating member 6 is switched to the left and right in response to the operation of an operating member (not shown), and the rotating body 7 is displaced to selectively engage with the rotating body (not shown) to transmit rotation. The system path is switched, and the rotation transmission disconnection control is performed.

Further, when the head panel 15 is moved back in the direction of arrow D and is at the stop position, the engaging projections 14 of the rotating member 6 are engaged with the locking grooves 16a of the head panel 15, as shown in FIG.
16b, by selectively engaging either one of them.
The rotation member 6 is fixed at a rotation position other than the neutral position.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist thereof.

[0029]

As described above, according to the rotating member mounting structure of the present invention, the structure for assembling and urging the rotating member is simple, and after the assembling, the rotating member rises from the substrate. Not come off.

[Brief description of the drawings]

FIG. 1 is a bottom view of a neutral state showing a mounting structure of a rotating member according to an embodiment of the present invention.

FIG. 2 is a bottom view in the rotating state.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a bottom view of the disassembled state of the mounting structure shown in FIG.

FIG. 5 is a plan view of a stopped state showing a relationship between a rotating member and a head panel shown in FIG. 1;

FIG. 6 is a plan view of the reproducing state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 6 Rotating member (rotating member support lever) 7 Rotating member 13 Spring 15 Head panel (fixing member)

Claims (2)

(57) [Scope of request for utility model registration] 1. A substrate (1), rotating with respect to the substrate only when the substrate along the substrate in both directions as a boundary neutral position mounted for a predetermined angle rotation, and is in the neutral position Attach to the board by moving to the center of motion
A rotating member (16) to be kicked, as well as the rotation urging the rotating member to the position deviated from the neutral position, turn the the pivoting member when said rotating member is positioned at the neutral position
A mounting structure for a rotating member, comprising: a spring (13) for urging in the direction of the moving center . 2. The substrate according to claim 1, wherein the spring is located on a substrate positioned on a rotation end side of the rotation member and on a side opposite to the rotation end of the rotation member while striking the rotation member at a neutral position. The mounting structure for a rotating member according to claim 1, comprising a tension spring that is stretched between said spring hook and said spring hook.