RU199899U1 - PUSH SWITCH PROTECTOR - Google Patents

Abstract

The utility model relates to the field of radio engineering and can be used in the production of switching light-signaling radio-electronic devices. The technical result is to increase the reliability of the protective device for the push-button switch during its operation. The protective device for the pushbutton switch comprises a flat spring housing and a cover made of transparent plastic. The body is made of sheet metal, and the flat spring is a structural element of the body. The cover, connected to the body by a metal axis, contains a rounded protrusion, support surfaces in contact with the body, guides that mate with the outer side surface of the body support, and surfaces in contact with the flat spring of the body. Moreover, the surfaces in contact with the flat spring of the body are made at an acute angle α in such a way that the leg L, opposite to the apex of the acute angle α, must be not less than the thickness S of the flat spring of the body. 8 p.p. f-ly, 6 dwg

Description

The utility model relates to the field of radio engineering and can be used in the manufacture of switching light-signaling radio-electronic devices.

During the operation of switching light-signaling devices with a protective cover, it is necessary to ensure a number of requirements for identifying the device, identifying its state, protecting it from accidental pressing, as well as maintaining operational properties during maintenance (flushing, wiping, etc.). However, most of the requirements apply to the protective cover, both in the open and closed position.

Known protection for switching rectangular (https://schneider.center/download-pdfZB6YD001.pdf article ZB6YD001) of the Harmony XB6 series from Scheneider Electric, consisting of a housing with a flat coil spring and a cover made of transparent plastic. Rectangular toggle protection can be used to protect the pushbutton switch against accidental operation, however it is always in the closed position. To access the switch, open and hold the cover. When the holding force is released, the cover closes to protect the pushbutton switch.

The disadvantage of the known solution is the limited information capacity of the node - the open state of the shutter is not used to identify the state of the pushbutton switch, and as part of the protection for switching rectangular, a cylindrical spring is used, which does not have protection against contamination and can be an obstacle when wiping the node (source of hooks for the wiping material) ... In addition, the design of the protective plastic assembly is not durable and is not characterized by strength, which affects the reliability of the device.

As a prototype, a protective cover (Protection Cap) from RS PRO (https://docs.rs-online.com/529a/0900766b8158855c.pdf Switch 16mm Flip guard 90 Degree Square) was chosen to protect the push-button switch, made of plastic. The protective cover can be used to protect the pushbutton switch from accidental operation while it is in either the open or closed position. To access the switch, simply open the shutter.

The disadvantage of the prototype is the low strength of the assembly, determined by the use of plastic parts, in particular structural elements that form the axis of rotation of the cover, which is especially important in the open position. As part of the protective cover, a flat spring is also used, which has sharp edges, which can be an obstacle when wiping the unit (a source of snagging of the wiping material), while the cover design is characterized by significant dimensions, which determines a large near-button space when mounted on the dashboard in the openings of the front light guides. panels, reducing their quality. The surface in contact with the operator's finger is smooth, which does not exclude slipping of the fingers. The outer surface of the cover is smooth, which is characterized by the formation of glare at a high level of illumination of the working area. The combination of disadvantages affects the reliability of the device.

The task to be solved when creating a utility model is to create a protective device for a push-button switch, devoid of the indicated disadvantages.

The technical result of the utility model is to improve the reliability of the protective device for the push-button switch during its operation.

The technical result is achieved due to the fact that the protective device for the pushbutton switch contains a housing with a flat spring and a cover made of transparent plastic, the housing is made of a metal sheet and the flat spring is a structural element of the housing, the cover connected to the housing by a metal axis contains a rounded protrusion , supporting surfaces in contact with the body, guides that mate with the outer side surface of the body support, and surfaces in contact with the flat spring of the body, and the surfaces in contact with the flat spring of the body are made at an acute angle and in such a way that the leg L is opposite the top of the acute angle a, must be at least the thickness S of the flat spring of the body. The flat spring of the body is made of a sheet of spring stainless steel. A sign in the form of a rectangular frame is made on the outer surface of the cover. The outer surface of the cover is embossed. A rounding is made at the end of the flat spring of the body. The outer surface of the lid is matted with a protective varnish. A vertical groove is made at the base of the flat spring. The base of the case is painted. The cover is provided with an L-shaped projection with a through groove.

The essence of the utility model is illustrated by drawings:

FIG. 1 is a longitudinal section of a safety device for a pushbutton switch in a closed position;

FIG. 2 is a longitudinal section of a safety device for a push-button switch in an open position;

FIG. 3 - protective device for the push-button switch in the closed position, top view;

FIG. 4 - a protective device for a push-button switch in a closed position, front view;

FIG. 5 - protective device for the push-button switch in the closed position, rear view;

FIG. 6 - a protective device for a push-button switch with a protrusion and a through groove in perspective, rear view.

Figures 1-6 show the following positions:

1 - case;

2 - flat spring;

3 - cover;

4 - rounded ledge;

5 - the supporting surface of the cover in contact with the body;

6 - guide;

7 - outer side surface of the housing support;

8 - housing support;

9 - the surface of the lid in contact with the flat spring when the lid is closed;

10 - the surface of the lid in contact with the flat spring when the lid is open;

11 - axis;

12 - rounding;

13 - outer surface of the cover;

14 - sign;

15 - flat spring base;

16 - vertical groove;

17 - housing base;

18 - L-shaped ledge;

19 - through groove.

The claimed protection device for a pushbutton switch consists of a housing 1 (Fig. 1) made of a metal sheet with a flat spring 2, which is an element of the housing 1 (Fig. 2). The cover 3, made of polycarbonate, is connected to the body 1 by a metal axis 11 and contains a rounded protrusion 4, support surfaces 5 in contact with the body 1, guides 6 (Fig. 4), which mate with the outer side surface 7 of the support 8 of the body 1, and surfaces 9, 10 in contact with the flat spring 2 of the body. Surfaces 9, 10 in contact with the flat spring 2 of the body are made at an acute angle a (Fig. 1, Fig. 2) in such a way that the leg L, opposite to the apex of the acute angle a, must be not less than the thickness S of the flat spring 2 of the body, which is made of a sheet of spring stainless steel. At the end of the flat spring 2, a rounding 12 is made. On the outer surface 13 of the cover 3, a sign 14 (Fig. 3) is made in the form of a rectangular frame. The outer surface 13 of the cover 3 is embossed or matted with a protective varnish. At the base 15 of the flat spring 2, a vertical groove 16 is made (Fig. 5). The base 17 of the body 1 has a paint-and-lacquer coating that ensures reliable fixation over the body 1 with the dashboard (not shown) when the cover is installed. The cover 3 is provided with an L-shaped projection 18 (Fig. 6) with a through groove 19. The utility model operates as follows.

In the closed position, the flat spring 2 of the body 1 through surface 9 creates a force that holds the cover 1 on the supporting surfaces 5. Applying force to the rounded protrusion 4 and overpowering the action of the spring 2, the cover 1 is moved to the open position, in which the flat spring 2 creates a force on surface 10, holding the cover 1 in the open position with support on the axis 11. At the end of the flat spring 2, a rounding 12 is made to exclude sharp edges and snagging of the rubbing material during operation. To ensure the minimum dimensions of the base of the body 17, the supporting surfaces 9, 10, in contact with the flat spring 2, are made at an acute angle a, which on the one hand provides a preliminary force of pressing the cover against the supports 8 of the body 1 (tension), and on the other hand allows you to place a part (not less than the thickness) of a flat spring in the body of the cover 3. The stiffness of the spring 2 and the shape of its bending are determined by both the properties of the material, the width of the spring 2 and the length of the vertical groove 16. When devices and covers are tightly placed on the dashboard to transfer the cover 3 to open position, an L-shaped protrusion 18 with a through groove 19 is used. Directly the force to move the cover 3 to the open position is applied to the protrusion in which the through groove 19 is made to improve mechanical contact with the protrusion and prevent the finger from slipping when opening.

The strength of the protection device for the pushbutton switch is greatly increased by the use of a metal body and shaft.

The space around the base of the housing is reduced by turning the surfaces in contact with the flat spring by an acute angle, which is relevant when placing protective covers inside the holes in the light conductors of the front panels.

The slipping of the finger is eliminated by the introduction of a rounded protrusion. The formation of glare is eliminated by the introduction of an anti-reflective matte coating or embossing.

On the outer surface there is a sign that provides identification of the protective cover when used in groups.

The combination of the above essential features provides an increase in the reliability of the protective device of the device for the pushbutton switch during its operation.

The prior art has not found an analogue characterized by features identical to all essential features of the claimed utility model. The proposed utility model is technically feasible and industrially realizable at the instrument-making enterprise, the tests carried out confirm the achievement of the claimed technical result.

From the foregoing, it can be concluded that the proposed technical solution meets the conditions of patentability of a utility model, namely, it is new and industrially applicable.

Claims (9)

1. A protective device for a pushbutton switch, comprising a housing with a flat spring and a cover made of transparent plastic, characterized in that the housing is made of a metal sheet, and the flat spring is a structural element of the housing, the cover connected to the housing by a metal axis contains a rounded protrusion , supporting surfaces in contact with the body, guides that mate with the outer lateral surface of the body support, and surfaces in contact with the flat spring of the body, and the surfaces in contact with the flat spring of the body are made at an acute angle α so that the leg L is opposite the top of the acute angle α, must be at least the thickness S of the flat spring of the body. 2. A protective device for a pushbutton switch according to claim 1, characterized in that the flat spring of the housing is made of a sheet of spring stainless steel. 3. A protective device for a push button switch according to PP. 1-2, characterized in that a sign in the form of a rectangular frame is made on the outer surface of the cover. 4. A protective device for a push button switch according to PP. 1-2, characterized in that the outer surface of the cover is embossed. 5. Protective device for a push button switch according to PP. 1-4, characterized in that a rounding is made at the end of the flat spring of the housing. 6. Protective device for a push button switch according to PP. 1-5, characterized in that the outer surface of the lid is matted with a protective varnish. 7. Protective device for a push button switch according to PP. 1-6, characterized in that a vertical groove is made at the base of the flat spring. 8. A protective device for a push button switch according to PP. 1-7, characterized in that the base of the body is painted. 9. Protective device for a push button switch according to PP. 1-8, characterized in that the cover is provided with an L-shaped projection with a through groove.

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