JPH056590Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a positioning device for positioning a cassette set in a cassette chamber of a tape recorder, for example.

[Prior Art] For example, when setting a cassette in the cassette chamber of a tape recorder, it is important to keep the head in stable contact with the tape in the cassette for good recording and playback. Therefore, it is necessary to ensure the positioning of the cassette set in the cassette chamber.

Conventionally, as shown in FIG. 6, as a positioning device of this type, a cantilevered leaf spring 1 is fixed to a base plate 2 by screws, spot welding, etc.
There is a device in which the cassette 3 is positioned at a predetermined position in the cassette chamber by pressing the back surface of the cassette 3 with a cassette.

Further, in the case shown in FIG. 7, the leaf spring 1 is connected to the substrate 2
The cassette 3 is fixed vertically to the cassette 3, and the cassette 3 is positioned from the back side of the cassette 3.

However, as tape recorders have become more compact in recent years, the space in the cassette chamber has tended to be restricted, and the space allowed for the leaf spring 1 on the back of the cassette 3 has also been restricted.

This has resulted in the problem that the plate width, spring length, etc. of the plate spring 1 itself cannot be freely determined, making it impossible to obtain the desired force.

Therefore, it has been considered to secure strength by increasing the thickness of the plate, but this has its limits in terms of stress.

Further, in the case shown in FIG. 7, the leaf spring 1 is connected to the substrate 2
There was a problem that there was not enough space for screws and spot welding to fix the parts vertically.

Another problem is that when a cantilevered leaf spring 1 is used, the pressing position on the back of the cassette 3 moves with the deflection of the leaf spring 1.
There was also a problem in which the robot deviated from the desired position and posture.

[Problems to be solved by the invention] This invention was made in order to solve the above-mentioned problems, and aims to provide a positioning device that can obtain sufficient force necessary for positioning in a small occupied space. The purpose is

[Means for Solving the Problems] The positioning device of this invention has a central portion bent at a predetermined angle to form a central bent portion 151 for pressing a predetermined side surface of the object to be positioned 14, and at least one end portion. A bent portion 153 is bent in the opposite direction to the central bent portion 151, and an extending portion 15 extends toward the end via this bent portion 153.
4 and is provided with a protrusion 152 protruding in the width direction near the central bent portion 151; The extension part 154 and the other end of the leaf spring 15 are brought into contact with this surface, and the side wall 111 slidably holds at least the other end, and is held by the side wall 111. a base body having a regulating part 112 that engages with the protruding part 152 of the leaf spring 15 to pre-regulate the protrusion of the protruding part 152 in the positioning direction and guiding this movement; and each of the bent parts 151, It is characterized in that an amount of force corresponding to the deflection at 153 is applied to the body to be positioned 14.

[Operation] With this configuration, a pressing force for stable positioning can be obtained by the bending of the leaf spring at each bent portion.

[Example] An example of this invention will be described below with reference to the drawings.

What is shown in FIG. 1 is an embodiment in which the present invention is applied to a positioning device for a cassette set in a cassette chamber of a tape recorder.

In the figure, 11 is a cassette chamber of a tape recorder, and this cassette chamber 11 includes a pair of reel shafts 121, 122, a pair of guide pins 131,
132 are provided.

In addition, in this figure, 14 is the cassette chamber 11.
The cassette 14 is an object to be positioned which is set in the cassette 14, and the cassette 14 is shown by an imaginary line.

At a position corresponding to the back of the cassette 14 of the cassette chamber 11, there is provided an upright side wall 111 which constitutes a part of the base body. A leaf spring 15 is provided on this side wall 111, and the cassette 14 is pressed against the guide pins 131, 132 from the back for positioning.

In this embodiment, as shown in FIG. 2, the leaf spring 15 has its central portion bent at a predetermined angle to form a dogleg-shaped central bent portion 151. A protrusion 152 protruding in the width direction is provided on a nearby side edge.

Further, a bent portion 15 bent in the opposite direction to the central bent portion 151 is provided at a position close to one end of the leaf spring 15.
3 is provided, and an extending portion 154 extending toward the end via this bent portion 153 is formed.

Further, a relatively tall protrusion 155 is provided on the side edge near the bent portion 153, and short protrusions 156, 156 are provided on both side edges of the extension portion 154, respectively. Note that the tall protrusion 155 is located at the bent portion 153.
It is used by being bent towards the tip of the bending angle.

On the other hand, on the side wall 111 to which the leaf spring 15 formed in this manner is attached, there is a protrusion 152 of the leaf spring 15 extending from the base end of the side wall 111 to the base on the bottom surface of the cassette chamber 11, as shown in FIG. In addition to providing a guide hole 112 that forms a regulating portion for position regulation, the side wall 111 is provided with a through hole 113 for locking a protrusion 155 bent toward the tip of the bending angle of the bending portion 153. , a through hole 114 is provided for locking two protrusions 156 provided on both side edges of the extending portion 154.

In this way, when the leaf spring 15 and the side wall 111 are configured and the leaf spring 15 is attached to the side wall 111, the position of the leaf spring 15 with respect to the side wall 111 is determined by the protrusion 155, and the two protrusions 15
6 is locked to the side piece of the through hole 114, and in this state, the protrusion 152 is locked to the guide hole 112 while bending the bent part 153 so as to expand against the spring force.

In this way, the leaf spring 15 is locked to the side wall 111 by its own spring force.

The end of the leaf spring 15 attached to the side wall 111 in this manner, opposite to where the extension portion 154 is provided, comes to slidably abut on the surface of the side wall 111. Furthermore, the movement of the projection 152 of the leaf spring 15 is guided by the guide hole 112, and the protrusion of the central bent portion 151 is regulated in advance.

When the cassette 14 is inserted into the cassette chamber 11 configured as described above, the back of the cassette 14 bends the “dog”-shaped central bent portion 151 of the leaf spring 15.
The tip of the is pressed. Then, as shown by the broken line in FIG.
1, the projection 152 is guided by the guide hole 112 and retreats.

Therefore, the other end of the central bent portion 151 is connected to the side wall 1.
As it slides along the cassette 11, it flexes to spread, and a pressing force due to the flexure of the leaf spring 15 acts on the back of the cassette 14.

Due to this pressing force, the cassette 14 is attached to the guide pin 1.
31 and 132 and positioned at a predetermined position in the cassette chamber 11.

Further, in this embodiment, the protrusion 152 and the guide hole 112 that guides the protrusion 152 are
The protrusion 155 and the through hole 113 and protrusion 156 that lock the protrusion 155 are arranged so that the plate of the plate spring 15 is securely brought into contact with the extending portion 154 and the other end of the plate spring 15 against the side wall 111 surface. It also serves to prevent the phenomenon of tilting the surface.

Next, referring to FIG. 5, another embodiment of this invention will be explained.

In this embodiment, the guide portion 1 is provided on the side wall 111.
6 is provided, and the extension portion 154 of the leaf spring 15 is connected to the side wall 11.
It is configured to be slidable and movable between the first surface and the guide portion 16.

The other structures and functions are the same as those of the embodiment shown in FIG. 1, and the same parts are given the same reference numerals.

According to this embodiment, when the central bent portion 151 and the bent portion 153 of the leaf spring 15 widen, the extending portion 1
54 can slide and move between the side wall 111 surface and the guide part 16, and the pressing position of the leaf spring 15 where it contacts the cassette 14 can be made immovable.
The posture of the cassette 14 can be maintained more stably.

Further, the guide portion 16 of this embodiment is a leaf spring 15.
It also serves to suppress the tilting of the leaf spring 15, that is, the tilting of the plate surface of the leaf spring 15.

According to the configurations of these embodiments, the leaf spring 15 can obtain a force corresponding to the deflection at two locations, the central bent portion 151 and the bent portion 153. If you use the same plate thickness, plate width, and spring length, you can obtain about twice the strength compared to the previous model.

Further, the plate spring 15 includes a protrusion 152 and a protrusion 15.
5, 156, etc. and the spring force of the plate spring 15 itself, it is structured to be locked to the side wall 111 surface, so there is no need for space for screwing or spot welding.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be modified and implemented without changing the gist.

For example, in the embodiment shown in FIG.
The extending portion 154 formed at one end of the side wall 11
Although the leaf spring has a bent part in the center, bent parts bent in the opposite direction to the bent part are provided at both ends of the leaf spring, and these folded parts are bent in the opposite direction. Extending portions may be formed through the curved portions, and these extending portions may be made movable along the side wall surface.

With this configuration, it is possible to obtain strength corresponding to the bending at the three bent portions.

Further, in the above-described embodiment, the positioning device for a cassette set in the cassette chamber of a tape recorder has been described, but the present invention can also be applied as a positioning device for other uses.

[Effects of the invention] According to this invention, a force corresponding to the deflection at at least two bent portions can be obtained, so that sufficient strength necessary for positioning can be secured.

Furthermore, when obtaining the same amount of force, the spring size can be smaller than that of a conventional cantilever leaf spring, so the space occupied for installation can also be reduced.

Furthermore, since the protrusion of the central bending portion is regulated in advance, less space is required for mounting the leaf spring.
At this time, since the protrusion is regulated using a protrusion extending in the width direction of the leaf spring, there is no problem during operation.

In addition, since the plate thickness can be reduced, it is advantageous in terms of stress and stable performance can be obtained.

Furthermore, since the elastic force is charged by each bending portion, a stable pressing force can be generated during operation.

Furthermore, since it is easy to install, it also has the effect of reducing assembly man-hours.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram showing an embodiment of this invention, Fig. 2 is a perspective view showing a leaf spring used in the embodiment, Fig. 3 is a perspective view of a side wall used in the embodiment, Fig. 4 is an explanatory diagram of the movement of the leaf spring in the same embodiment, Fig. 5 is a schematic diagram showing another embodiment of this invention, and Figs. 6 and 7 are schematic diagrams showing conventional positioning devices. FIG. 1... Leaf spring, 2... Board, 3... Cassette,
11...Cassette chamber, 111...Side wall, 112...
... Guide hole, 113, 114 ... Through hole, 121,
122... Reel shaft, 131, 132... Guide pin, 14... Cassette, 15... Leaf spring, 15
1...Central bent portion, 152...Protrusion, 153...
...Bending portion, 154...Extending portion, 155, 156...
...Protrusion, 16...Guide part.

Claims (1)

[Claims for Utility Model Registration] (1) A central bent portion 1 for pressing a predetermined side surface of the object to be positioned 14 by bending the central portion at a predetermined angle.
51, and has a bent part 153 bent in the opposite direction to the central bent part 151 at least at one end, and an extending part 154 extending toward the end via this bent part 153. A protrusion 15 protruding in the width direction near the bent portion 151
2, and a surface that is perpendicular to the positioning direction for defining the position of the predetermined side surface of the object to be positioned 14, and the extending portion 154 of the leaf spring 15 and the other side surface are provided on this surface. It has a side wall 111 that abuts the ends and slidably holds at least the other end, and engages with the protrusion 152 of the leaf spring 15 held by the side wall 111 to move the protrusion 152 in the positioning direction. A base body is provided with a regulating part 112 that pre-regulates protrusion and guides this movement, and a force corresponding to the deflection at each of the bent parts 151 and 153 is applied to the positioned body 14. A positioning device characterized by: (2) The positioning device according to claim 1, wherein the extending portion 154 of the leaf spring 15 is fixedly fixed to the side wall 111 and held therein. (3) The positioning device according to claim 1, wherein the extending portion 154 of the leaf spring 15 is movably supported along the surface of the side wall 111. (4) The leaf spring 15 has central bent portions 1 on both end sides.
Utility model registration claim 1 or 3, characterized in that it has a bent part 153 bent in the opposite direction to 51 and an extending part 154 extending toward the end via this bent part 153. Positioning device as described in section.