JPS6237302Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lever switch, and particularly to a moderation mechanism thereof.

The moderation mechanism of a conventional lever switch consists of continuously forming a number of semicircular fitting recesses corresponding to the number of switching stages at the inner end of the switch case of the lever, and correspondingly forming a recess at the tip so that it cannot escape. A retainer with balls disposed thereon and biased at the tip by a spring material is fixed in the switch case, and the balls of the retainer are engaged with each fitting recess at the inner end of the switch case of the lever. This allowed for moderation in lever operation.

However, in the lever switch described above, a semicircular fitting recess is continuously formed at the inner end of the switch case of the lever, but when the lever is manufactured by press working, a continuous fitting recess is formed. It is difficult to make a mold for this purpose, and when the lever swings, the ball passes over the protrusion between the fitting recesses and fits into the adjacent fitting recess, but the protrusion wears out during repeated use and Although the moderation mechanism is strong, it has the disadvantage that it becomes sweet with use.

The present invention solves the above-mentioned drawbacks by simplifying the shape of the inner end of the lever switch case, making it easier and cheaper to manufacture the mold,
Another object of the present invention is to provide a lever switch that can be operated with a light touch, without any change over time, and with good operability.

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

In the figure, 1 is the switch case, 2 is the pivot 3
6 is an actuator formed integrally with the lever 2, 7 is a slider connected to the actuator 6, and 8 is a switching contact disposed on the slider 7. , 9 is a fixed contact piece that is implanted in the terminal plate 10 arranged at the bottom of the switch case 1 and is arranged on the terminal plate 10, and 11 is a fixed piece that is integrally formed with the fixed contact piece and protrudes from the bottom of the terminal plate 10. It is a terminal.

The above is the basic mechanism of a commonly seen lever switch. By swinging the lever 2, the actuator 6 is actuated to slide the slider 7, and the switching contact 8 attached to the slider 7 is moved. The connection switch between the fixed terminals 11 is performed by moving on a plurality of fixed contact pieces 9.

By the way, the lever switch has a switching contact 8.
A so-called moderation mechanism is provided that reliably moves the lever 2 a predetermined distance by operating the lever 2 and stops it at that position until the next lever operation.

The moderation mechanism of the present invention is implemented by a lever 2 that swings within a certain range and a holder 13 that swings in the opposite direction to the lever 2 while being in pressure contact with the inner end of the switch case 1 of the lever 2. That is, the lever 2 has an operating rod part 4 protruding from the front surface of the switch case 1, whose swing range is restricted to a predetermined value by a cut groove 1a formed on the front surface of the switch case 1, and a semicircular shape at the inner end of the switch case 1. A fitting recess 5 having a shape is formed. And switch case 1 of this lever 2
Two pins 14 and 15 are installed vertically inside the switch case 1 at a distance from the inner end, and the inner end of the switch case 1 of the lever 2 and the two pins 14,
15, the retainer 13 is locked. Retainer 13
is a spring material 16 which is made impossible to escape from the tip and is internalized.
A ball 17 is provided which is biased toward the tip and comes into pressure contact with the fitting recess 5 of the lever 2, and pin receiving recesses 18, 19 are provided at the top and bottom of the rear end, which are simultaneously locked with the pins 14, 15 in a horizontal state. is formed. The portion of this retainer 13 that accommodates the balls 17 is
A hole 20 is drilled to fit loosely into the hole 20, and the upper and lower parts of the peripheral wall of this hole are formed with crevices 21 and 22 into which the inner end of the switch case 1 of the swinging lever 2 can fit. , the lever 2 is swingable, and the ball 17 accommodated in the hole 20 while being in pressure contact with the fitting recess 5 of the lever 2 is placed in the hole 20.
There is no escape.

In the lever switch constructed as described above, when the operating rod 4 of the lever 2 is tilted downward, the fitting recess 5 at the inner end of the switch case 1 of the lever 2 turns upward, and the fitting recess 5 and the ball The retainer 13, which is brought into pressure contact at 17, rotates upward using the upper pin 14 as a fulcrum in accordance with the movement of the lever 2. In this case, since the swinging range of the lever 2 is predetermined, when the retainer 13 begins to rotate upward about the pin 14 by moving the operating rod 4 of the lever 2 downward from the horizontal axis, the retainer 13 Spring material 16 inside
is gradually compressed, and for example, when the lever operation angle reaches one-half of the total, the spring material 16 is compressed to the maximum, and when it passes through this, it rapidly springs back, so that it functions as a moderation mechanism.

Similarly, when the operating rod 4 of the lever 2 is tilted upward, the pin 15 becomes a fulcrum and the retainer 13 is rotated downward.

As mentioned above, the push switch of the present invention requires only one fitting recess to be formed at the inner end of the lever case, so dimensional accuracy is required and multiple fitting recesses are continuously formed as in the past. It is easier to make a mold for it and can be manufactured at a lower cost compared to levers that require the use of levers.

In addition, the semicircular fitting recess at the inner end of the lever's switch case that slides into contact with the lever when operating the lever, the ball of the retainer, and the pin inside the switch case and the pin receiving recess of the retainer make smooth contact, reducing wear and tear during lever operation. can be done with a light touch and can increase the number of times the switch can be used.

[Brief explanation of the drawing]

FIG. 1 is a side view of the present invention with a portion cut away to show the operating state of the lever, and FIG. 2 is a side view of the present invention with a portion cut away and showing the lever in a downwardly moved state. 1... Switch case, 1a... Cut groove, 2...
Lever, 4... Operating rod portion, 5... Fitting recess, 7...
...Slider, 8...Switching contact, 9...Fixed contact piece,
11... Fixed terminal, 13... Retainer, 14, 15
... Pin, 16 ... Spring material, 18, 19 ... Pin receiving recess.

Claims (1)

[Scope of utility model registration request] By swinging a lever, a slider is slid and a switching contact attached to the slider is moved over a plurality of fixed contact pieces, and a fixed contact piece formed integrally with these fixed contact pieces and disposed externally is moved. In a lever switch for switching connections between terminals, a semicircular fitting recess is formed in the inner end of the switch case of the lever, and an operating rod part of the lever that protrudes from the front surface of the switch case is formed on the front surface of the switch case. The lever is passed through the cut groove to regulate the range of vertical swing, and two pins are horizontally installed vertically inside the switch case at a distance from the inner end of the switch case of the lever. A ball is disposed at the tip between the two pins so that it cannot escape and is biased toward the tip by a spring material so as to press into the fitting recess. A retainer formed with a pin-receiving recess that locks onto the pin of a book is interposed in such a way that the two pin-receiving recesses contact the two pins at the same time when the operating rod of the lever is in a horizontal state. Features a lever switch.