Hand-operated power-off structure for waterproof electric switch machine

Abstract

The utility model relates to the technical field of switch machines, in particular to a hand-cranking power-off structure for a waterproof electric switch machine, which comprises a switch machine bottom shell, a safety contact group and a hole plug, the safety power connection group is fixed on the inner side of the switch machine bottom shell; the hole plugging plug penetrates through the combined pad and is fixed to the outer side of the point switch bottom shell through threads. The safety contact group comprises a base, a sliding block, a limiting pin, a Saltema contact, a cover plate, a pressure spring and a guide rod; the sliding block is installed in the base, the limiting pin is installed in the sliding block, the Salter contact and the cover plate are fixed on the base, and the pressure spring and the guide rod are installed between the base and the sliding block. According to the utility model, the function requirement that the control circuit is switched off when the switch machine is inserted into a hand crank is met, and meanwhile, the sealing of the hand crank hole part and the overall protection grade of the switch machine are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of switch machines, in particular to a waterproof electric switch machine with a manual cranking power-off structure. Background Art

[0002] A hand crank power-off function is a fundamental feature of electric switch machines. It requires that when the hand crank is inserted to manually operate the switch, the circuit must be disconnected to ensure operator safety. Existing electric switch machines use a dynamic and static plug structure with numerous openings in the bottom shell and poor sealing, making it unsuitable for waterproof electric switch machines. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned technology and to provide a waterproof electric switch machine with a hand-cranked power-off structure.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A waterproof electric switch machine with a hand-cranked power-off structure, characterized in that it includes a switch machine bottom shell, a safety contact group and a plugging plug, the safety contact group includes a base, a slider, a limit pin, a Schaltbau contact, a cover plate and a compression spring; the slider is installed in the base and slidably cooperates with it, the limit pin is fixed to the side of the slider, the Schaltbau contact is fixed to the side of the base, the cover plate is fixed to the upper part of the base to limit the slider in the base, the cover plate is provided with an oblong hole opening, the limit pin slidably cooperates with the oblong hole opening, the compression spring is installed between the slider and the inner wall of the base, one side of the slider is provided with a notch portion and a platform portion connected to the notch portion, the notch portion and the platform portion cooperate with the roller at the bottom of the Schaltbau contact, and the plugging plug is threadedly fixed to the outside of the switch machine bottom shell.

[0006] Preferably, the front end of the slider is provided with a chamfered portion that cooperates with the hole plug.

[0007] Preferably, the compression spring is sleeved on the guide rod and is longer than the guide rod, and the guide rod is fixed to the inner wall of the base or the rear end of the slider.

[0008] Preferably, the cover plate is fixed to the base by four bolts.

[0009] The beneficial effects of the present invention are as follows: When the switch machine is operating normally, the hole plug and combined gasket can ensure the sealing of the hand crank hole area of ​​the bottom shell. The safety contact group slider is in a compressed state, and the Schaltbau contact ensures that the circuit is connected. When the hole plug is removed, the safety contact group slider is ejected under the action of the compression spring, and the Schaltbau contact disconnects the control circuit. Inserting the hand crank allows the switch machine to safely operate the turnout. In addition to meeting the functional requirement of disconnecting the control circuit when the hand crank is inserted, this device also ensures the sealing of the hand crank hole area and the overall protection level of the switch machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the circuit connection state of the waterproof electric switch provided by the utility model with a hand-cranked power-off structure;

[0011] Figure 2 This is a side schematic diagram of the waterproof electric switch provided by the utility model in the circuit connected state with a hand-cranked power-off structure;

[0012] Figure 3 This is a schematic diagram of the circuit disconnection state of the waterproof electric switch provided by the utility model with a hand-cranked power-off structure; DETAILED DESCRIPTION

[0013] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0015] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixedly connected," and "fixed connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0016] The following describes the specific implementation of the present invention in detail with reference to the accompanying drawings and preferred embodiments. Figure 1 As shown, the waterproof electric switch machine has a hand-cranked power-off structure, including a switch machine bottom shell 1, a safety contact group 2, a plug 3 and a combination pad 4; the safety power connection group 2 is fixed to the inner side of the switch machine bottom shell 1; the plug 3 passes through the combination pad 4 and is fixed to the outer side of the switch machine bottom shell 1 by threads; the safety contact group 2 includes a base 201, a slider 202, a limit pin 203, a Schaltbau contact 204, a cover plate 205, a compression spring 206 and a guide rod 207; the slider 202 is installed in the base 201 and slides inside the base, one end of the base is open, and the front end of the slider can extend from the opening, the limit pin 203 is fixed to the side of the slider, and the limit pin slides with the oblong hole opening 2051 on the cover plate 205.

[0017] A guide rod 207 and a compression spring 206 are installed at the rear end of the slider 202. The compression spring is longer than the guide rod. The two are installed between the rear end of the slider and the inner wall of the base. A notch portion 2021 and a platform portion 2022 connected to the notch portion are provided on the upper part of the slider. The notch portion and the platform portion cooperate with the roller 2041 at the bottom of the Schaltbau contact. The roller drives the touch switch 2042 of the Schaltbau contact to operate, thereby controlling the switching condition of the Schaltbau contact. A U-shaped groove is provided on one side of the front of the slider, and the U-shaped groove matches the shape of the hand crank.

[0018] The Schaltbau contact 204 and the cover plate 205 are respectively fixed on the base.

[0019] like Figure 1 、 Figure 2 As shown, under normal operating conditions, the hole plug 3 and combined gasket 4 ensure the sealing of the hand-cranked hole of the bottom shell 1. The slider 201 of the safety contact assembly 2 is restrained by the hole plug 3, the compression spring 206 is in a compressed state, and the bottom roller 2041 of the Schaltbau contact 204 is located in the notch 2021 of the slider 202, in a normally closed state. Leads AB are connected, and the control circuit is turned on.

[0020] like Figure 3As shown, unscrewing the plug 3 causes the safety contact assembly 2 slider 202 to slide out under the elastic force of the compression spring 206, driving the stop pin 203 to slide within the oblong hole opening 2051 of the cover plate 205 until it is stopped. The bottom roller 2041 of the Schaltbau contact 204 rests on the platform 2022 of the slider 202, actuating the Schaltbau contact switch 2042, disconnecting the Schaltbau contact 204, disconnecting lead AB, and disconnecting the control circuit. Inserting the hand crank allows the switch machine to safely operate the turnout.

[0021] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A waterproof electric switch machine with a manual power-off structure, characterized by: The utility model comprises a switch machine bottom shell, a safety contact group and a plugging plug, wherein the safety contact group comprises a base, a slider, a limit pin, a Schaltbau contact, a cover plate and a compression spring; the slider is installed in the base and slides with it, the limit pin is fixed on the side of the slider, the Schaltbau contact is fixed on the side of the base, the cover plate is fixed on the upper part of the base to limit the slider in the base, the cover plate is provided with an oblong hole opening, the limit pin slides with the oblong hole opening, the compression spring is installed between the slider and the inner wall of the base, a notch portion and a platform portion connected to the notch portion are provided on one side of the slider, the notch portion and the platform portion cooperate with the roller at the bottom of the Schaltbau contact, and the plugging plug is threadedly fixed to the outside of the switch machine bottom shell.

2. The waterproof electric switch machine manual power-off structure according to claim 1, characterized in that: The front end of the slider is provided with a chamfered portion that cooperates with the hole plug.

3. The waterproof electric switch machine manual power-off structure according to claim 1, characterized in that: The compression spring is sleeved on the guide rod and is longer than the guide rod. The guide rod is fixed to the inner wall of the base or the rear end of the slider.

4. The waterproof electric switch machine manual power-off structure according to claim 1, characterized in that: The cover plate is fixed to the base by four bolts.

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