Anti-breakdown safety contact switch

Abstract

The utility model discloses an anti-breakdown safety contact switch, which comprises a double-channel base, an elastic sheet, an elastic sheet pressing plate, a metal contact, a protective cover and a contact seat, the elastic sheet comprises a mounting section and a contact section, the elastic sheet is positioned in a slide way of the double-channel base, the mounting section of the elastic sheet is fixed with the double-channel base through the elastic sheet pressing plate, and the metal contact is fixed on the contact seat through the elastic sheet pressing plate. A bending section is arranged between the mounting section and the contact section, the contact section is inclined upwards relative to the mounting section through the bending section, the metal contact is fixed at one end, far away from the bending section, of the contact section, the protective cover is mounted on the double-channel base, and the contact seat can extend into the protective cover to be in contact connection with the metal contact on the elastic sheet; according to the anti-breakdown safety contact switch, the bending section is utilized to enable the contact section to tilt upwards in the double-channel base to have a large inclination angle, when the contact seat and the metal contact are pressed and contacted, the elastic sheet is finally in an upward inclination or horizontal state and cannot be in contact with the contact seat, it is guaranteed that the elastic sheet cannot be broken down, and the service life of the elastic sheet is prolonged. And the service life of the whole safety contact switch is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of contact switches, and more particularly to an anti-breakdown safety contact switch. Background Art

[0002] Currently, in the elevator industry, contact-type door switches that electrically verify the door's position and lock's locked state utilize pin-and-socket switch structures and contact-and-seat door lock switch structures. The contact-and-seat door lock switch structure references existing patent application number CN201920814343.X, titled "An Elevator Door Lock Switch Structure," which includes a dual-track base, a spring, a spring pressure plate, a metal contact, a front guard, a rear guard, a contact seat, and two wires. The metal contact is riveted to one end of the spring. The spring is placed within slideway one of the dual-track base, secured to the slideway one of the dual-track base via the spring pressure plate. The front guard is fixedly connected to the dual-track base, and the rear guard is fixedly connected to the dual-track base. The spring clip in this structure is usually straight as a whole, and due to the downward pressure of the spring clip pressure plate, the overall inclination angle is difficult to control and adjust. When the contact seat contacts the metal contact, it is easy for the spring clip to come into contact with the metal contact, causing the spring clip to be impacted by a large current, affecting the service life of the spring clip, and even causing the spring clip to be punctured, resulting in failure and damage. Utility Model Content

[0003] In response to the deficiencies in the prior art, the present invention provides an anti-breakdown safety contact switch. The anti-breakdown safety contact switch is configured to include a spring piece including a mounting section, a bending section, and a contact section. The bending section is used to cause the contact section to tilt upward within the double-channel base with a large inclination angle. When the contact seat is pressed down to contact the metal contact, the spring piece will eventually be in an upward tilted or horizontal state and will not come into contact with the contact seat, thereby ensuring that the spring piece will not be broken down and effectively improving the service life of the overall safety contact switch.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A breakdown-proof safety contact switch comprises a dual-track base, a spring piece, a spring piece pressure plate, a metal contact, a shield and a contact seat, wherein the spring piece comprises a mounting section and a contact section, the spring piece being located in a slideway of the dual-track base, and the mounting section of the spring piece being fixed to the dual-track base via the spring piece pressure plate, a bending section being provided between the mounting section and the contact section, the bending section being used to tilt the contact section upward relative to the mounting section, the metal contact being fixed to one end of the contact section away from the bending section, the shield being mounted on the dual-track base, and the contact seat being able to extend into the shield and contact and connect with the metal contact on the spring piece.

[0006] Furthermore, the double-track base is provided with two horizontally parallel slideways, and the double-track base is provided with a wire groove and a connection space at both ends of the slideway, and the end of the spring contact section away from the bending section extends into the connection space.

[0007] Furthermore, the shield is provided with two parallel through slots at the connection space relative to the double-channel base, and the through slots are communicated with the connection space, and the contact seat extends through the through slots into the connection space to contact and connect with the metal contact.

[0008] Furthermore, the double-track base is provided with a connecting hole below the slide, a nut groove is provided below the connecting hole, a fixing nut is provided in the nut groove, a first fixing hole is provided on the spring plate pressure plate, a second fixing hole is provided on the spring mounting section, a fixing bolt is provided in the first fixing hole, and the fixing bolt passes through the first fixing hole, the second fixing hole and the connecting hole and is threadedly connected to the fixing nut.

[0009] Furthermore, the contact seat includes a front section and a rear section, the front section is a U-shaped bifurcated structure, and the rear section is provided with a plurality of second mounting holes. The front section and the rear section are bent and connected, and the front section and the rear section are parallel to each other.

[0010] Furthermore, a plurality of third mounting holes are provided on the bottom of the double-channel base.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In the utility model, the spring piece in the anti-breakdown safety contact switch is arranged to include a mounting section, a bending section and a contact section. The mounting section is used to mount the spring piece pressure plate and the double-track base, and a bending section is provided between the mounting section and the contact section, so that the contact section can be tilted upward in the double-track base with a large inclination angle. Therefore, when the contact seat and the metal contact are pressed down to contact, the spring piece will eventually be in an upward tilted or horizontal state and will not come into contact with the contact seat. Only the metal contact is always in contact with the contact seat, thereby ensuring that the spring piece will not be broken down and effectively improving the service life of the overall safety contact switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0014] Figure 1 This is a structural diagram of an anti-breakdown safety contact switch;

[0015] Figure 2 A cross-sectional view of an anti-breakdown safety contact switch;

[0016] Figure 3 It is a structural diagram of a double-track base;

[0017] Figure 4 Schematic diagram of the structure of the shrapnel.

[0018] The markings in the figure are: 1. Double-channel base; 101. Slide; 102. Connection space; 103. Wire groove; 104. Third mounting hole; 105. Connecting hole; 106. Nut groove; 2. Protective cover; 201. Through groove; 3. Contact seat; 301. Front section; 302. Rear section; 303. Second mounting hole; 4. Spring clip pressure plate; 5. Spring clip; 501. Mounting section; 502. Bending section; 503. Contact section; 504. First mounting hole; 6. Metal contact; 7. Fixing bolt; 8. Fixing nut. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0021] A safety contact switch that prevents breakdown, such as Figure 1-4As shown, it includes: a dual-track base 1, a spring clip 5, a spring clip pressure plate 4, a metal contact 6, a shield 2 and a contact seat 3, the spring clip 5 includes a mounting section 501, a bending section 502 and a contact section 503, the spring clip 5 is located in the slide 101 of the dual-track base 1, and the mounting section 501 of the spring clip 5 is fixed to the dual-track base 1 through the spring clip pressure plate 4, a bending section 502 is provided between the mounting section 501 and the contact section 503, and the contact section 503 is tilted upward relative to the mounting section 501 through the bending section 502, the metal contact 6 is fixed to the contact section 503 at one end away from the bending section 502, the shield 2 is installed on the dual-track base 1, and the contact seat 3 can extend into the shield 2 and contact and connect with the metal contact 6 on the spring clip 5.

[0022] In the present invention, the spring piece 5 in the anti-breakdown safety contact switch is configured to include a mounting section 501, a bending section 502 and a contact section 503. The mounting section 501 is used to install the spring piece pressure plate 4 and the double-track base 1, and a bending section 502 is provided between the mounting section 501 and the contact section 503, so that the contact section 503 can be tilted upward in the double-track base 1 with a large inclination angle. Therefore, when the contact seat 3 is pressed down and contacted with the metal contact, the spring piece 5 will eventually be in an upward tilted or horizontal state and will not contact the contact seat 3. Only the metal contact is always in contact and connected with the contact seat 3, thereby ensuring that the spring piece 5 will not be broken down, and effectively improving the service life of the overall safety contact switch.

[0023] Preferably, two horizontally parallel slides 101 are provided on the dual-channel base 1, and the dual-channel base 1 is respectively provided with a wire groove 103 and a connection space 102 at both ends of the slide 101. The end of the contact section 503 of the spring 5 away from the bending section 502 extends into the connection space 102, thereby facilitating the contact seat 3 to enter the connection space 102 and have sufficient space to contact the metal contact.

[0024] Preferably, the shield 2 is provided with two parallel through slots 201 relative to the connection space 102 of the dual-channel base 1, and the through slots 201 are connected to the connection space 102, and the contact seat 3 extends through the through slots 201 into the connection space 102 to contact and connect with the metal contact 6.

[0025] Preferably, the dual-track base 1 is provided with a connecting hole 105 below the slide 101, a nut groove 106 is provided below the connecting hole 105, a fixing nut 8 is provided in the nut groove 106, a first fixing hole 504 is provided on the spring clip pressure plate 4, a second fixing hole 505 is provided on the spring clip 5 mounting section 501, a fixing bolt 7 is provided in the first fixing hole 504, and the fixing bolt 7 passes through the first fixing hole 504, the second fixing hole 505 and the connecting hole 105 and is threadedly connected to the fixing nut 8.

[0026] Preferably, the contact seat 3 includes a front section 301 and a rear section 302, the front section 301 is a U-shaped forked structure, and a plurality of second mounting holes 303 are provided on the rear section 302. The front section 301 and the rear section 302 are bent and connected, and the front section 301 and the rear section 302 are parallel to each other.

[0027] Preferably, a plurality of third mounting holes 104 are provided at the bottom of the dual-channel base 1 , so that the dual-channel base 1 can be installed through the third mounting holes 104 .

[0028] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A breakdown-proof safety contact switch, comprising a double-channel base, a spring, a spring pressure plate, a metal contact, a shield, and a contact seat, characterized in that: The spring clip includes a mounting section and a contact section. The spring clip is located in the slideway of the dual-track base, and the mounting section of the spring clip is fixed to the dual-track base through a spring clip pressure plate. A bending section is provided between the mounting section and the contact section, and the contact section is tilted upward relative to the mounting section through the bending section. The metal contact is fixed on the contact section at one end away from the bending section. The shield is installed on the dual-track base, and the contact seat can extend into the shield to contact and connect with the metal contact on the spring clip.

2. The anti-breakdown safety contact switch according to claim 1, characterized in that: The double-track base is provided with two horizontally parallel slideways, and the double-track base is provided with a wire groove and a connection space at both ends of the slideway, and the end of the spring contact section away from the bending section extends into the connection space.

3. The anti-breakdown safety contact switch according to claim 2, characterized in that: The shield is provided with two parallel through slots at the connection space relative to the double-channel base, and the through slots are communicated with the connection space. The contact seat extends through the through slots into the connection space to contact and connect with the metal contacts.

4. The anti-breakdown safety contact switch according to claim 3, characterized in that: The double-track base is provided with a connecting hole below the slide, a nut groove is provided below the connecting hole, a fixing nut is provided in the nut groove, a first fixing hole is provided on the spring plate pressure plate, a second fixing hole is provided on the spring mounting section, a fixing bolt is provided in the first fixing hole, and the fixing bolt passes through the first fixing hole, the second fixing hole and the connecting hole and is threadedly connected to the fixing nut.

5. The anti-breakdown safety contact switch according to claim 4, characterized in that: The contact seat includes a front section and a rear section, the front section is a U-shaped bifurcated structure, and the rear section is provided with a plurality of second mounting holes. The front section and the rear section are bent and connected, and the front section and the rear section are parallel to each other.

6. The anti-breakdown safety contact switch according to claim 5, characterized in that: A plurality of third mounting holes are provided on the bottom of the double-channel base.

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