JPS6016009Y2 - toggle switch - Google Patents

Description

[Detailed description of the invention] The present invention relates to a toggle switch that adopts an upper insertion method to increase the operating knob of an integrated lever that operates an opening/closing part. By bringing the arcuate projection into contact with the truncated conical portion of the lever, it is prevented from being pushed down further, and the flat portion of the lever, once passed through the notch of the arcuate projection, is pulled out during operation. In order to prevent the lever from being removed by rotating the lever 90 degrees in a plane so that the spherical arc surface part of the flat part is prevented from being removed by the arcuate protrusion, and to maintain this state of preventing removal, The present invention relates to a toggle switch in which the lever is moved only in the direction in which the lever is rotated 90' by a guide blank of a housing plate to which the screw tube is coupled.

In conventional toggle switches, the operating lever was inserted upward from the bottom of the mounting thread, but this inevitably resulted in the operating lever being limited by the dimensions of the mounting thread and becoming smaller. It was inconvenient to use.

Therefore, in order to improve the usability by increasing the size of the operating knob of the lever, for example, in Japanese Utility Model Application Publication No. 51-160171, a top-insertion type toggle switch in which the lever is inserted downward from the top of the spiral tube is used. From above the sleeve, which is formed by providing a long slot above the inner cavity and communicating with it, insert a handle whose width is wider than the length of the long slot, and then insert the ring from below the handle into the sliding part. A small toggle switch is disclosed in which the nozzle is inserted into the sleeve by being inserted between the bottom surface of the slotted hole and the bottom surface of the long slotted hole, and the flat part of the handle is in sliding contact with the long slotted hole of the sleeve, thereby preventing rotation of the handle. .

However, since this toggle switch requires a ring, it is troublesome to assemble, and it is also susceptible to external force in the downward direction, leaving room for improvement.

The present invention was made in view of the above circumstances, and provides an advanced top-insertion type toggle switch.The purpose of the present invention is to eliminate the need for the ring, facilitate assembly, and reduce the number of parts. This reduces costs and completely prevents the lever from being pushed down or pulled out.
The purpose is to stabilize the operation.

To this end, the toggle switch according to the present invention prevents the lever inserted into the spiral tube from being pushed down further by bringing the arcuate projection of the spiral tube into contact with the truncated conical portion of the lever. At the same time, in order to prevent the flat part of the lever that has passed through the notch of the arc-shaped projection from being pulled out during operation, the lever is rotated 90 degrees in a plane so that the spherical arc-shaped part of the flat part passes through the notch of the arc-shaped projection. The arc-shaped protrusion prevents the lever from being removed, and in order to maintain this state, the lever is moved only in the direction in which the lever is rotated by 90 degrees by the guide blank of the case plate to which the screw tube is connected. This is how it was done.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a partially cutaway perspective view showing an embodiment of the toggle switch according to the present invention, and Fig. 2 is a side sectional view of the main part. 1 (Note that the switch mechanism itself is well known as shown in the prior art described above, so a description thereof will be omitted.

), it has a lever 2, a screw tube 3, and a housing plate 4.

Below, these three components will be explained in order.
FIG. 3 is a perspective view of the lever 2 alone, and FIG. 4 is a plan view of the lever 2.

It goes without saying that the lever 2 is a member for changing the position of the switch, and in the toggle switch of the present invention that adopts the above-mentioned upper insertion method, the knob 5 is sufficiently large and can be easily moved by a person's finger. It is easy to pick up and therefore easy to use.

The portion following this knob portion 5 is a truncated conical portion 6 whose outer diameter gradually increases as it descends downward, and the maximum bulging portion 7, which is the outer peripheral edge of the lower end of the truncated conical portion 6, is as described below. It is formed in relation to the dimensions and shape of the spiral tube 3.

The levers 2 below this maximum bulging portion 7 have a constant width parallel to each other (this width dimension is also related to the size and shape of the spiral tube 3, which will be described later).

) is cut down to the lower end of the lever 2, and of course the width between the parallel surfaces of the flat part 8 is thinner than the outer diameter of the maximum bulging portion 7.

As described above, the flat portion 8 is a parallel surface with a constant width when viewed from one side, but on the other hand, the so-called neck portion directly below the maximum bulge portion 7 is a narrow portion 9 with a small diameter and is constricted. Moreover, the part following this narrow part 9 is spherical as a whole in the direction of the parallel plane of the flat part 8 (excluding the flat part 8 itself, of course).

) is bulged out to form a spherical arc surface portion 10, and the lever 2 is configured to perform a toggle motion.

It should be noted that a spring or the like is further attached to the lower end of the lever 2 as a switch mechanism, but the explanation thereof will be omitted.

It should be noted that the lever 2 of the toggle switch of the present invention is provided with a truncated conical portion 6 above a spherical arc surface portion 10 for toggle movement, with a pinched portion 9 in between.

Next, the spiral tube 3 into which the lever 2 is inserted from above will be described. FIG. 5 is a partially cutaway perspective view of the spiral tube 3, FIG. 6 is a plan view, and FIG. 7 is a bottom view.

A thread is cut on the outer periphery of the spiral tube 3 for attaching a toggle switch to a case (not shown), etc.
A flange portion 11 is provided at the lower end of the flange portion 11 so that the flange portion 11 can be assembled to the casing plate 4.

The inside of the spiral tube 3 is an inner cavity 12 that provides a space for the lever 2 to toggle, but it is not just a straight hole, but a fixed horizontal position in the middle of the inner cavity 12 as shown in the figure. The inner circumferential portion of the spiral tube 3 serves as an arcuate protrusion 13.
protrudes toward the center of the

The upper surface of the arcuate protrusion 13 stops the maximum bulging portion 7 of the truncated conical portion 6 of the lever 2 to prevent it from descending below that point, and the lower surface of the arcuate protrusion 13 supports the spherical arcuate portion 10 of the lever 2. This is the fulcrum of the toggle movement that comes into contact with the toggle.

Therefore, the dimensions of the arcuate protrusion 13 are such that its inner diameter is smaller than the maximum bulging portion 7 of the truncated conical portion 6, and its thickness is also thinner than the length of the pinched portion 9 of the lever 2.

Furthermore, since the flat part 8 of the lever 2 is inserted from above the spiral tube 3 so as to be below the arcuate projection 13,
A part of the arcuate projection 13 is cut out to form a notch 14,
It is designed to pass through the flat part 8.

That is, as best shown in FIG. 6, the arcuate protrusion 13 has a constant line width passing through the center of the spiral tube 3, and is cut out to be slightly wider than the width of the flat part 8 of the lever 2. It is designated as Section 14.

In addition, as shown in FIG. 7, a pair of arcuate attachment portions 15 are suspended from the flange portion 11 at the lower end of the spiral tube 3 symmetrically with respect to the center. The arcuate attachment portion 15 and the cutout portion 14 are formed with a phase shift of 90° when viewed in plan.

The reason for this 900 degree shift is that the screw tube 3 is assembled to the case plate 4 and the lever 2 is toggled while being guided in one direction by the case plate 4, as will be described later.

The housing plate 4 connects the lever 2 and the spiral tube 3 to the switch housing 1, and FIG. 8 is a perspective view thereof, and FIG. 9 is a plan view thereof.

The case plate 4 is formed by punching and bending a single metal plate, and has coupling claws 17 on both sides 16.
However, what is more essential is a pair of mounting blanks 18 (having dimensions corresponding to the arcuate mounting portion 15) whose flat portions receive the arcuate mounting portion 15 at the lower end of the spiral tube 3.

), and a guide blank 19 is cut out to connect the centers of these mounting blanks 18 and to be slightly wider than the width of the flat part 8 of the lever 2.

This guide blank 19 prevents the lever 2 from being pulled out of the spiral tube 3 by regulating the direction of toggle movement of the lever 2, as will be described later.

Next, the assembly of the lever 2, the screw tube 3, and the case plate 4 will be described. The lever 2 is inserted into the inner space 12 from above the screw tube 3.

In a positional relationship in which the tip of the flat part 8 of the lever 2 comes into contact with the arcuate projection 13 of the spiral tube 3, the lever 2 cannot move further down inside the spiral tube 3;
4, the flat part 8 can further descend into the notch 14 to the pinched part 9 without being blocked by the arcuate projection 13, and finally the truncated conical part 6 meets the arcuate projection 13. The lever 2 cannot be inserted into the screw tube 3 any further.

Incidentally, such a notch portion 14 and a flat portion 8. The alignment can be easily accomplished by inserting a long flat body.

This prevents the lever 2 from descending into the spiral tube 3 from now on, but on the other hand, if it continues as it is, even if the lever 2 attempts to make a toggle movement, it will come off the arcuate protrusion 13.

Therefore, the lever 2 is rotated 90 degrees in a plane from the direction of the diameter passing through the notch 14.

To explain this with reference to Fig. 6, the notch 14 is 1'zf of the watch.
After inserting the flat part 8 of the lever 2 into the 6 o'clock position, move the lever 2 only by 90 degrees in the 3 o'clock and 9 o'clock directions.
Twist it.

It is clear from FIGS. 6 and 7 that the flat part 8 of the lever 2 is then parallel to the direction connecting the centers of the pair of arcuate attachment parts 15 provided on the flange part 11 of the spiral tube 3. .

By twisting the lever 2 by 90 degrees in this manner, the lever 2 is restricted from moving in the downward direction since the truncated conical portion 6 comes into contact with the arcuate projection 13, and in the upward direction as well. Since the spherical arc-shaped portion 10 comes into contact with the lower surface and toggle movement becomes possible, it becomes so-called a state in which insertion and removal are impossible.

However, even in this state where it cannot be inserted or removed, once the lever 2 is rotated again in a plane and the flat part 8 is aligned with lfi and the 6 o'clock direction in FIG. The surface portion 10 will be lifted up and the toggle movement will no longer be possible.

Therefore, in order to keep the flat part 8 of the lever 2 in the 3 o'clock and 9 o'clock directions in FIG. 6, the guide blank 19 of the housing plate 4 is used.

That is, the arcuate attachment portion 15 at the lower end of the spiral tube 3 is inserted into and fixed to the attachment blank 18 on the flat surface of the housing plate 4, thereby determining the positional relationship between the screw tube 3 and the housing plate 4.

At this time, the lower end of the flat part 8 of the lever 2 is also attached to the mounting blank 18.
It is engaged in a guide blank 19 that linearly connects their centers.

As a result, the flat part 8 is moved to the notch part 14 during the toggle movement.
The lever 2 is guided only in the direction of the guide blank 19, which is perpendicular to the direction in which the lever 2 is connected, so that the spherical arc surface 10 of the lever 2 cannot be lifted out of the notch 14 as described above.
The assembly will maintain its condition.

As described above, in the toggle switch according to the present invention, the flat part of the lever is inserted into the spiral tube, the downward movement is restricted by the truncated conical part, and then the lever is twisted 90' in a plane to form the spherical arc-shaped part. The flat part is guided in one direction by the guide blank of the casing plate to which the spiral tube is attached in a fixed shape, in order to maintain this state in which it cannot be inserted or removed. It was designed to do so.

This reduces the number of parts and simplifies the structure, making assembly work much more efficient and mechanized.

Furthermore, since the assembled condition does not change at all, operation is stable over a long period of time and reliability is improved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the toggle switch according to the present invention, FIG. 2 is a side sectional view of the main part, FIG. 3 is a perspective view of the lever alone, and FIG. A plan view of the lever, FIG. 5 is a partially cutaway perspective view of the spiral tube alone, FIG. 6 is the same top view, FIG. 7 is the same bottom view, FIG. 8 is a perspective view of the case plate alone,
FIG. 9 is a plan view of the same. 1... Switch storage body, 2... Lever, 3... Spiral tube, 4... Case plate, 5...
...Knob part, 6...Truncated conical part, 7.
...Maximum bulging area, 8...Flama, 9.
... Narrow part, 10 ... Spherical arc surface part, 11
...Flange part, 12...Inner cavity part, 1
3... Arcuate projection, 14... Notch, 1
5... Arc-shaped mounting portion, 18... Mounting blank, 19... Guide blank.

Claims (1)

[Claims for Utility Model Registration] A toggle switch having a structure in which a lever is inserted from above into the inner space of a spiral tube and the spiral tube is connected to a case plate attached to a switch housing, ...The part following the knob portion is bulged in the radial direction as a truncated conical portion, and the portion below the maximum bulging portion at the lower end of the truncated conical portion is a flat portion with a constant width that is parallel to each other and is at least wider than the maximum bulging portion. Also, of the part that spans this flat part, the part directly below the maximum bulge part is a narrow part with a small diameter, and the part following this narrow part is spherical in the direction of the parallel plane of the flat part. A lever that is bulged to form a spherical arc surface portion, and an inner circumferential portion at a certain horizontal position in the middle of the inner cavity has an inner diameter smaller than the maximum bulged portion toward the center. and the thickness thereof is thinner than the length of the narrow portion, forming an arc-shaped projection, and furthermore, this arc-shaped projection has a constant line width passing through the center, and is slightly wider than the width of the flat portion. a spiral tube that is cut out to form a notch, and in addition, a pair of arcuate attachment portions are symmetrically suspended from a flange portion at the lower end and are offset from the notch by 90' in plan view;
...A box having a pair of mounting blanks for receiving the arcuate mounting portion, and a guide blank formed with a notch slightly wider than the width of the flat portion, connecting the centers of these mounting blanks. The flat part of the lever is inserted through the notch of the spiral tube until the lower end of the truncated conical part abuts the arcuate projection, and the lever is moved 90 degrees in plan from the direction of the notch. The flat part is rotated so that it is parallel to the direction connecting the centers of the pair of arcuate attachment parts at the lower end of the spiral tube, and the arcuate attachment part is inserted and fixed into the mounting blank of the casing plate, and the flat part is inserted into the notch. The toggle switch must be guided only in the direction of the guide blank, which is perpendicular to the direction in which the parts are connected.