CN219350021U - Double-lock contact switch capable of preventing elastic piece from failure - Google Patents

Abstract

The utility model discloses a double-lock contact switch capable of preventing failure of an elastic piece, which comprises a switch body, wherein the switch body comprises a shell and a main contact switch, the main contact switch is positioned in the shell, a main contact sliding contact device is arranged above the shell corresponding to the main contact switch, the main contact sliding contact device comprises a sliding block, a contact piece and an elastic piece, the sliding block is connected with the shell in a sliding way along the vertical direction, the contact piece is arranged at the bottom of the sliding block, the elastic piece is arranged between the sliding block and the shell, a reset hook is further arranged on the shell, a reset groove is formed on one side of the sliding block, facing the reset hook, of the sliding block, the middle part of the reset hook is rotationally connected with the shell, one end of the reset hook stretches into the reset groove, and a balancing weight is arranged on the other end of the reset hook.

Description

Double-lock contact switch capable of preventing elastic piece from failure

Technical Field

The utility model belongs to the technical field of elevator switches, and particularly relates to a double-lock contact switch capable of preventing an elastic piece from failing.

Background

The door lock for the elevator landing door is an important part of elevator safe operation, the elevator landing door lock is a safety protection device of an elevator landing door system, a door lock hook on a door lock is a device for automatically closing and locking the elevator landing door, and the door lock device of the elevator landing door is used for keeping the state of closing and locking the elevator landing door, so that the closing of the elevator landing door and the landing door is ensured, and the danger that the elevator door is easily opened is avoided.

At present, when an asynchronous door knife technology is adopted, a lock hook needs to perform rotary motion and then translational motion in the door closing process, and due to the fact that a motion track is complex, a plug-in type switch cannot be adopted, fingers or solid foreign matters easily enter the lock hook inlet and outlet of a traditional protective cover, so that the protective level is low, and the requirement of IP2X is difficult to meet.

The patent application number 2021109012502 discloses an elevator switch dustproof structure, which comprises a switch body, a main contact piece and an auxiliary contact piece, wherein the switch body comprises a base, the base is provided with the main contact switch and the auxiliary contact switch, a protective cover is arranged above the base, the protective cover is provided with a main contact sliding contact device corresponding to the main contact switch, the main contact sliding contact device and the protective cover slide along the vertical direction, the protective cover is provided with an auxiliary contact sliding contact device corresponding to the side surface of the auxiliary contact switch, the auxiliary contact sliding contact device and the protective cover slide transversely, and the main contact sliding contact device and the auxiliary contact sliding contact device have the same structure, wherein the main contact sliding contact device comprises a sliding block, a contact sheet and a reset spring, the contact sheet is arranged on the sliding block, and the sliding block is connected with the reset spring; the novel protective cover is characterized in that a U-shaped bolt is arranged on the main contact and fixed to the lower portion of the main contact and forms a U-shaped groove with the main contact, a reset hook is further arranged in the protective cover and is rotatably arranged in the protective cover, the bottom of the reset hook is connected with the sliding block, and the top of the reset hook is located above the sliding block.

When the landing door is closed, the U-shaped bolt presses down the sliding block, so that the main contact piece on the main contact sliding block is connected with the main contact switch, when the landing door is opened, the U-shaped bolt moves upwards, the main contact sliding block is jacked up through the action of the reset spring and the reset hook, the main contact switch is disconnected, but in long-term use, the condition that the reset spring fails exists, at the moment, the main contact sliding block moves downwards under the influence of gravity, and even if the landing door is opened, the main contact switch is still connected, so that certain hidden danger exists.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the device which can enable the sliding block to move upwards to be separated from the main touch switch through the counterweight when the elastic piece fails, so that the main touch switch is prevented from being still switched on when the landing door is opened, and the safety is higher.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a two lock contact switch that elastic component inefficacy, includes the switch body, the switch body includes casing and main touch switch, and main touch switch is located the casing, the casing corresponds main touch switch top and is provided with main touch sliding contact device, and main touch sliding contact device includes slider, contact piece and elastic component, and slider and casing follow vertical direction sliding connection, contact piece set up in the slider bottom, and the elastic component sets up between slider and casing, still be provided with the reset hook on the casing, one side towards the reset hook on the slider is provided with the groove that resets, the middle part and the casing rotation of reset hook are connected, and the one end of reset hook stretches into in the groove that resets, is provided with the balancing weight on the other end.

Further the slider is provided with a positioning rotating shaft corresponding to the reset groove, the end part of the reset hook is provided with a positioning groove, the positioning rotating shaft stretches into the positioning groove, and the size of the positioning groove is larger than that of the positioning rotating shaft.

The positioning groove penetrates through the end part of the reset hook and is communicated with the outside.

The novel reset hook comprises a slider, and is characterized by further comprising a main contact, wherein a U-shaped bolt is arranged on the main contact, the U-shaped bolt is fixed on the lower part of the main contact and forms a U-shaped groove with the main contact, the reset hook is of a V shape, one end of the reset hook, which is connected with the balancing weight, is positioned above the slider, a connecting rod is arranged between the balancing weight and the reset hook, and when the slider is pressed down by the main contact, the top end of the reset hook stretches into the U-shaped groove.

The connecting rod is arc-shaped, and the arc-shaped connecting rod takes the reset hook and the rotating point of the shell as the center of a circle.

Compared with the prior art, the utility model has the beneficial effects that: when the landing door is closed, the U-shaped bolt presses down the sliding block, so that a contact piece on the sliding block is connected with the main touch switch, and meanwhile, the reset hook is pressed and overturned, and the upper part of the reset hook stretches into the U-shaped bolt; when the landing door is opened, the reset hook and the sliding block are reset, if the elastic piece fails at the moment, the reset hook still reverses under the action of the balancing weight, and the sliding block is driven to move upwards, so that the main touch switch is disconnected, the balancing weight and the elastic piece form double insurance, and the main touch switch can not be disconnected due to the failure of the elastic piece.

Drawings

FIG. 1 is a schematic diagram of a dual lock contact switch of the present utility model that is resistant to failure by an elastic member;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

fig. 3 is a perspective view of a main contact according to the present utility model.

Reference numerals: 11. a housing; 12. a main touch switch; 13. a slide block; 131. a reset groove; 14. an elastic member; 15. a connecting rod; 16. balancing weight; 17. resetting the hook; 171. a first swing arm; 1711. a positioning groove; 172. a second swing arm; 18. a contact piece; 2. a main contact; 21. u-shaped bolt.

Detailed Description

Embodiments of the double lock contact switch of the present utility model that resists failure of the spring member are further described with reference to fig. 1-3.

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The utility model provides a two lock contact switch that elastic component inefficacy, includes the switch body, the switch body includes casing 11 and main switch 12 that touches, and main switch 12 is located casing 11, casing 11 corresponds main switch 12 top and is provided with main sliding contact device that touches, and main sliding contact device includes slider 13, contact piece 18 and elastic component 14, and slider 13 and casing 11 follow vertical direction sliding connection, contact piece 18 set up in slider 13 bottom, and elastic component 14 sets up between slider 13 and casing 11, still be provided with reset hook 17 on the casing 11, one side towards reset hook 17 is provided with reset groove 131 on the slider 13, reset hook 17's middle part and casing 11 rotate to be connected, and reset hook 17's one end stretches into in reset groove 131, is provided with balancing weight 16 on the other end.

The elastic member 14 in this embodiment may be a return spring, or a spring sheet is used as the elastic member 14.

In this embodiment, the switch is used in cooperation with a switch body and further has a main contact 2, a U-shaped bolt 21 is disposed on the main contact 2, the U-shaped bolt 21 is fixed on the lower portion of the main contact 2 and forms a U-shaped groove with the main contact 2, the reset hook 17 is V-shaped, one end of the reset hook 17 connected with the balancing weight 16 is located above the sliding block 13, a connecting rod 15 is disposed between the balancing weight 16 and the reset hook 17, and when the sliding block 13 is pressed down by the main contact 2, the top end of the reset hook 17 stretches into the U-shaped groove.

As shown in the view of fig. 1, for convenience of understanding, the two arms of the reset hook 17 are respectively referred to as a first swing arm 171 and a second swing arm 172, wherein the first swing arm 171 is one of the connecting sliders 13, and the other is the second swing arm 172.

In a normal state, the second swing arm 172 extends substantially vertically, and a baffle is provided on the left side of the second swing arm 172, the baffle is a part of the housing 11, which can prevent the reset hook 17 from continuing to rotate anticlockwise, and in order to make the balancing weight 16 have a good movement space, the connecting rod 15 is preferably arc-shaped, the arc-shaped connecting rod 15 uses the rotation point of the reset hook 17 and the housing 11 as the center of a circle, and a hole for the connecting rod 15 to pass through is provided on the baffle, at this time, the balancing weight 16 is always located on the left side of the baffle, the whole reset hook 17 is located on the right side of the baffle, and the baffle can prevent the balancing weight 16 from reaching the right side of the baffle.

When the landing door is closed, the main contact 2 will move downwards, the U-shaped bolt 21 of the main contact moves the sliding block 13 downwards, the reset hook 17 rotates clockwise along the rotation point of the reset hook and the shell 11, the second swing arm 172 gradually stretches into the U-shaped groove, the connecting rod 15 rotates clockwise with the balancing weight 16, and the contact piece 18 at the bottom of the sliding block 13 contacts the main contact switch 12 to conduct the main contact switch 12;

when the landing door is opened, the main contact 2 moves upwards to be separated from the sliding block 13, at the moment, the sliding block 13 moves upwards under the action of the elastic piece 14, the contact piece 18 is separated from the main contact switch 12, the main contact switch 12 is disconnected, meanwhile, in the upward moving process of the U-shaped bolt 21, the U-shaped bolt pushes the second swing arm 172 upwards, the forced reset hook 17 rotates anticlockwise, namely, under the conditions of clamping and the like of the sliding block 13, the sliding block 13 can be forced to move upwards, and the disconnection of the main contact switch 12 is ensured; if the elastic member 14 fails, after the main contact 2 leaves the slider 13, the elastic member 14 cannot provide an upward thrust to the slider 13 at this time, but the slider 13 is kept at the upper position by the action of the weight 16 through the reset hook 17, so as to prevent the main contact switch 12 from being turned on.

In this embodiment, the weight of the weight 16 is based on the fact that the elastic member 14 is disabled, and the weight is greater than the base weight of the slider 13 that is separated from the main contact switch 12.

In this embodiment, a positioning rotating shaft is preferably disposed in the slider 13 corresponding to the reset groove 131, a positioning groove 1711 is disposed at an end of the reset hook 17, the positioning rotating shaft extends into the positioning groove 1711, and the size of the positioning groove 1711 is larger than that of the positioning rotating shaft.

As shown in fig. 1, the first swing arm 171 extends obliquely upwards, and the positioning groove 1711 is also formed extending obliquely upwards, that is, the positioning groove 1711 extends along the length direction of the first swing arm 171, so that the positioning shaft can slide in the interior to a certain extent, and the locking phenomenon is avoided when the slider 13 moves.

The positioning groove 1711 in this embodiment preferably penetrates through the end of the reset hook 17 and communicates with the outside.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (5)

1. The utility model provides a dual lock contact switch of elastic component inefficacy, includes the switch body, the switch body includes casing and main touch switch, and main touch switch is located the casing, the casing corresponds main touch switch top and is provided with main touch sliding contact device, and main touch sliding contact device includes slider, contact piece and elastic component, and slider and casing follow vertical direction sliding connection, contact piece set up in the slider bottom, and the elastic component sets up between slider and casing, its characterized in that: the shell is further provided with a reset hook, one side, facing the reset hook, of the sliding block is provided with a reset groove, the middle of the reset hook is rotationally connected with the shell, one end of the reset hook extends into the reset groove, and the other end of the reset hook is provided with a balancing weight.

2. The dual lock contact switch of claim 1, wherein the resilient member is resistant to failure: the sliding block is provided with a positioning rotating shaft corresponding to the reset groove, the end part of the reset hook is provided with a positioning groove, the positioning rotating shaft stretches into the positioning groove, and the size of the positioning groove is larger than that of the positioning rotating shaft.

3. The dual lock contact switch of claim 2, wherein the resilient member is resistant to failure, wherein: the positioning groove penetrates through the end part of the reset hook and is communicated with the outside.

4. A double lock contact switch for preventing elastic member failure according to claim 3, wherein: still include the main piece that touches, be provided with the U type on the main piece that touches and tie, the U type is tied and is fixed in main piece lower part and forms U type groove with the main piece that touches, the hook that resets is the V type, and the one end that its connects the balancing weight is located the top of slider, and is provided with the connecting rod between balancing weight and the hook that resets, and when the slider was pressed down to the main piece that touches, the top that resets the hook stretches into U type inslot.

5. The spring failure resistant double lock contact switch of claim 4, wherein: the connecting rod is arc-shaped, and the arc-shaped connecting rod takes the reset hook and the rotating point of the shell as the center of a circle.

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