RU2298248C1 - Wall-mounted switch - Google Patents

Abstract

FIELD: electrical engineering; circuit-opening devices, for instance domestic and industrial wall-mounted switches.

SUBSTANCE: proposed wall-mounted switch has case with switching device and terminals for connecting device contacts to supply mains and to load, device control component in the form of keys, and safety cover. Switch is provided with internal lighting unit to facilitate its finding in dark locations that has series-interconnected light-emitting diodes connected through protective and limiting module to switch terminals. Switch keys and/or cover are made of translucent material. Light-emitting diodes are disposed on case for turning and locking in position by means of hold-down clamps; they are installed in the latter for longitudinal displacement. Provision is made for controlling surface lighting and brightness, for its good sideways visibility, and for dispensing with making holes in cover and/or in switch keys.

EFFECT: facilitated manufacture and assembly, enhanced ergonomic and operating characteristics of switch.

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Description

The invention relates to the field of electrical engineering, in particular to devices for switching electrical circuits, mainly to wall switches for domestic and industrial use.

Known wall switch for open wiring, comprising a housing with a load on / off mechanism and terminals for connecting to an electrical network, such as AC power, and a protective cover (see, for example, technical data sheet for the switch for open installation type A16-051 "Prima" the company "Wessen", Russia, 2004), adopted as a prototype.

A disadvantage of the known switch is the difficulty of detecting this switch in a darkened room.

Wall switches for concealed or open wiring are also known, containing blocks for internal illumination of the switch, for example, using an LED as a light-emitting element. In particular, a switch for open electrical wiring is known, comprising a housing with terminals for connecting to an electric network and a load switching device, a button-like switch control, a circuit-breaker backlight unit with a radiating element in the form of an LED and a protective cover (see, for example, see , technical data sheet for the circuit breaker for an open installation of type A16-046 "Prima" manufactured by "Wessen", Russia, 2004).

A disadvantage of the known switches is that, due to the use of an opaque cover and a key (or key) for outputting the LED radiation in the cover and / or switch keys on the front side, special holes are made for accommodating LED lenses in these holes to ensure radiation visibility LED. However, this leads to a significant increase in the complexity of manufacturing and assembling the circuit breaker, because requires, firstly, additional operations to make holes, and secondly, to ensure that the hole matches the LED placed on the case.

In addition, this design of the backlight device does not allow to ensure the visibility of the switch from the side, which reduces the ergonomic and operational capabilities of the switch.

The objective of the invention is the creation of a wall switch, ensuring the achievement of a technical result, consisting in simplifying the detection of a switch in a darkened room, increasing its ergonomic and operational capabilities.

This technical result in a wall switch containing a housing with at least one switching device for connecting / disconnecting a load included in the power supply network and terminals for connecting the device contacts to the power line and the load of at least one control device of the switching device, for example, in the form of a key, and a protective cover, is achieved by the fact that it is equipped with an internal illumination unit containing at least one light-emitting element, the cover and / or the ying of a light transmissive material.

The light-emitting element in the wall switch is made in the form of an LED connected to the terminals of the switching device through a protective-restrictive module.

The LED in the wall switch is placed on the housing with the possibility of angular and longitudinal movement and fixing in the selected position.

The LED in the wall switch is placed on the housing with the possibility of angular and longitudinal movement by means of a holding clamp LED clamp mounted on the housing with the possibility of rotation around the axis of fixing and fixing, and the LED is mounted in the bracket with the possibility of changing its longitudinal position.

The invention is illustrated by drawings, where figure 1 shows a General view of the switch, figure 2 is a section along aa in figure 1, figure 3 is a view B in figure 1.

The wall switch contains a housing 1 with a switching device for connecting-disconnecting the load included in the power grid in the form of a standard mechanical switch to two positions - one direction and terminals 2 electrically connected to the device contacts for connection to the power grid and the load. To control the switch, a key 4 is used, which is removably connected to the movable stand 3 of the switch and is made of translucent material, for example having a matte structure. Key 4 can be in one of two stable positions: in the “off” position (in the drawing — see FIG. 2 — the indicated position of the key is made by a solid line) - the load is disconnected from the mains and in the “on” position (in FIG. 2 is shown by a dash-dot line). On the housing 1 there are LEDs 5 connected in series and connected to the terminals 2 through the protective-restrictive module 6. The LEDs 5 and module 6 form the backlight unit of the circuit breaker, and taking into account the structural features of the housing 1, module 6 is connected between the LEDs. To ensure the necessary electrical safety, the connecting conductors are made with an insulated wire, and the terminals of the elements and module 6 are placed in protective covers. The LEDs 5 are held by clamping brackets 7, which are mounted on the housing with screws 8. On top of the switch housing is closed a protective cover 9 mounted on the housing with a screw 10.

Connecting to the electrical network and using the wall switch is as follows.

The housing 1 of the switch with the previously removed cover 9, as well as the button 4, is fixed to the wall (when using the switch for open wiring) or installed in the corresponding socket in the wall (when using the switch for closed wiring). Then, to the terminals 2 of the circuit breaker, when the contacts of the circuit breaker are open (in the “off” position), the corresponding mains wire and the wire going from the load are connected. At the same time, since the terminals 2 will be energized, the current flowing through the serially connected protective module 6 and the LEDs 5 will cause the LEDs to light up 5. Then, the button 4 is mounted on the rack 3 and the LEDs are installed correctly 5. If necessary, adjust the radiation direction LEDs 5, for which they partially unscrew the screw 8, releasing the bracket 7, and after moving it to a predetermined angle, tighten the screw 8. Again, the longitudinal axial is adjusted the position of the LEDs, which allows you to adjust the distance from the source of the LED light to the illuminated surface of the lid and / or key. Then, a protective cover 9 is mounted on the housing 1 and fixed to the housing using a screw 10.

The protective-restrictive module 6 is used to maintain acceptable parameters of voltage and current on the LEDs when using the switch in the high voltage network. For this purpose, module 6 contains elements that prevent the reverse voltage from being applied to the LEDs (when using a switch in an AC network) that exceeds the maximum permissible values for LEDs, as well as elements that limit the amount of current flowing through the LEDs.

When the button 4 is switched to the “on” position, the switch contacts (and, respectively, terminals 2) will be short-circuited, the current through the chain containing the LEDs will drop to zero and the LEDs will go out, and the current flowing through the load, for example, incandescent lamps, will increase to the level providing light bulbs.

It should be noted that the ability to change the location of the LEDs, in particular the ability to rotate them relative to the axis of attachment to the circuit breaker housing, allows the directional radiation LEDs to be used and used with high efficiency. Due to the increased brightness of the luminescence, the latter, as shown by studies, allows to ensure good visibility of the switch and in the presence of a cover and a key with a relatively low light transmission in it. By adjusting the position of the LED, such an arrangement of the light spot on the surface of the lid and / or key (usually in the area of the junction of the front and side walls) is selected so that the spot is observed from the outside of the switch both from the front and side. This allows you to ensure the visibility of the switch from any of these sides when using a minimum number of LEDs. In addition, the ability to control the direction of LED radiation significantly simplifies the process of reconfiguring the LEDs when replacing the design of the cover and keys (with the same case), which often occurs in the manufacture of modern switches. At the same time, the ability to control the longitudinal position of the LEDs allows you to change the distance between the LED and the illuminated surface and, thus, the size and brightness of the light spot on the specified surface.

Due to the possibility of making the key 4 (and / or cover 9) of the switch from a translucent or completely transparent material, as well as the use of high-brightness LEDs, the switch with internal illumination will be clearly visible both in complete darkness and in a partially darkened room, which allows you to use the latter as a night light.

Thus, the presented technical solution, which consists in supplying the circuit breaker with internal illumination made on the basis of high-brightness LEDs, and using a lid and keys made of material with relatively high light transmission in the circuit breaker, provides a technical result consisting in simplifying the detection of the circuit breaker in darkened indoors, while the possibility of changing the angular and longitudinal position of the LEDs allows you to adjust the direction of the light odiodov and thereby switch visibility with both the front and the sides, which enhances the ergonomic and operational capabilities of the switch.

Claims (4)

1. Wall switch comprising a housing with at least one switching device for connecting / disconnecting a load included in the power supply network and terminals for connecting the device contacts to the power line and load, at least one control device of the switching device, for example, in the form of a key, and a protective cover, characterized in that it is equipped with an internal illumination unit containing at least one light-emitting element, for example, an LED located in a switch with angular movement and fixation in the selected position, and the lid and / or key are made of translucent material. 2. The wall switch according to claim 1, characterized in that the LED is connected to the terminals of the switching device through a protective-restrictive module. 3. The wall switch according to claim 2, characterized in that the LED is placed in the switch with the possibility of longitudinal movement and fixation. 4. The wall switch according to claim 2, characterized in that the LED is placed on the housing with the possibility of angular and longitudinal movement and fixation by means of a LED holding clamp, mounted on the housing with the ability to rotate around the axis of fixing and fixing, while the LED is mounted in a bracket with the possibility of changing its longitudinal position.

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