CN113990702B - Isolation switch - Google Patents

Abstract

A disconnector, relating to the field of low-voltage electrical components and equipment, wherein the disconnector is provided with a quick opening and closing mechanism and an opening and closing padlock mechanism on its body, wherein the quick opening and closing mechanism is used to cut off the disconnector when power is off, and the opening and closing padlock mechanism is used to realize the opening and closing padlock function without relying on a handle. When power needs to be cut off, the disconnector only needs to be cut off by the quick opening and closing mechanism, thereby improving the safety performance of the switch. At the same time, the disconnector is designed with an opening and closing padlock function on its body, which can realize the opening and closing padlock without relying on a handle to prevent misoperation.

Description

An isolating switch

Technical Field

The present invention relates to the field of low-voltage electrical components and equipment, and in particular to an isolating switch.

Background technique

In order to provide circuit breaker protection and overcurrent protection for power transmission and distribution circuits, it is usually necessary to connect fuses in series in the distribution circuit as protection devices, and to install isolating switches and control the circuits through frequent manual operations. The isolating switch uses the operating mechanism included to realize the opening and closing of the moving and static contacts, but the existing operating mechanism design is relatively complex, with many parts and high cost, and the padlock function of the isolating switch is on the handle, with only the opening padlock, which cannot prevent misoperation.

Summary of the invention

The object of the present invention is to provide a disconnector to solve the above problems.

The embodiment of the present invention is achieved as follows:

According to one aspect of an embodiment of the present invention, an isolating switch is provided, wherein a quick opening and closing mechanism and an opening and closing padlock mechanism are arranged on the main body of the isolating switch, wherein the quick opening and closing mechanism is used to cut off the isolating switch when power is off, and the opening and closing padlock mechanism is used to realize the opening and closing padlock function without relying on a handle.

Optionally, the isolating switch comprises a contact arc extinguishing system and a mechanism part, and the contact arc extinguishing system and the mechanism part are locked by a screw connection.

Optionally, the threaded connection comprises a through screw.

Optionally, the mechanism part includes a base, an operating shaft, a main torsion spring, an indicator, a reset tension spring and a through shaft. The operating shaft is provided with a spring hole, a reset spring rod and a through shaft waist hole, which are respectively connected to corresponding parts. The operating shaft rotates around the center hole of the base to drive the corresponding parts to rotate. One end of the main torsion spring is placed in the hole on the operating shaft, and the other end is placed in the hole on the base. During the rotation of the rotating shaft, one end of the main torsion spring rotates with the rotating shaft, and the center shaft moves accordingly, realizing the compression-dead point-release process.

Optionally, a sliding groove is provided on the base, and a push rod is provided on the operating shaft. During the rotation of the operating shaft, the push rod pushes the indicating member to make its legs slide in the sliding groove of the base, thereby realizing the status indication function.

Optionally, the contact arc extinguishing system includes contacts, contacts, a rotating shaft system and a housing. The contact pressure is achieved through a leaf spring in the rotating shaft system. The rotation of the mechanism operating shaft drives the contact system rotating shaft to rotate through the through shaft, driving the moving and static contacts to open and close.

Optionally, the padlock part includes a padlock plate, a shaft and a compression spring, one end of the compression spring is fixed to the upper cover, and the other end is placed on the padlock plate. The upper cover is provided with a sliding groove, and the operating shaft is provided with a stop rod. When the isolation switch padlock needs to be locked, the padlock plate is pulled up, and the shaft slides upward along the sliding groove. The padlock plate blocks the rotation of the operating shaft to realize the opening and closing padlock function; after the lock is removed, the padlock plate automatically resets to the initial state under the pressure of the spring.

The beneficial effects of the embodiments of the present invention include: when power is cut off, the disconnector only needs to be disconnected by the quick opening and closing mechanism, thereby improving the safety performance of the switch. At the same time, the disconnector is designed with an opening and closing padlock function on the body, which can realize the opening and closing padlock without relying on the handle to prevent misoperation.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of an isolating switch according to an embodiment of the present invention;

FIG2 is a partial structural diagram of the mechanism of an embodiment of the present invention;

FIG3 is a structural diagram of the mechanism indicating part of an embodiment of the present invention;

FIG4 is a structural diagram of a contact arc extinguishing system according to an embodiment of the present invention;

FIG. 5 is a partial structural diagram of a padlock according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Please refer to Figures 1 to 5. The present invention provides an isolating switch with a simple operating mechanism. The entire isolating switch operating mechanism is simply designed. When power needs to be cut off, the isolating switch only needs to be cut off through a quick opening and closing mechanism, thereby improving the safety performance of the switch.

At the same time, the isolating switch is designed with an opening and closing padlock function on the main body, which can achieve opening and closing padlock without relying on the handle to prevent misoperation.

The isolating switch is composed of two modules, namely, a contact arc extinguishing system 10 and a mechanism part 20, which are locked in the middle by a through screw, as shown in FIG1 .

The mechanism part 20 includes a base 3, an operating shaft 8, a main torsion spring 6, an indicator 5, a reset tension spring 9 and a through shaft 7. The operating shaft 8 is provided with a spring hole, a reset spring rod and a waist hole 16 of the through shaft 7, which are respectively connected to corresponding parts. The operating shaft 8 rotates around the center hole of the base 3, driving the corresponding parts to rotate. One end of the main torsion spring 6 is placed in the hole on the operating shaft 8, and the other end is placed in the hole on the base 3. During the rotation of the operating shaft 8, one end of the main torsion spring 6 rotates with the operating shaft 8, and the center shaft moves accordingly, realizing the process of compression-dead point-release. As shown in Figure 2.

The base 3 is provided with a sliding groove, and the operating shaft 8 is provided with a push rod 15. When the operating shaft 8 rotates, the push rod 15 pushes the indicator 5, so that the indicator leg 14 slides in the base sliding groove 4, thereby realizing the state indication function.

The contact arc extinguishing system 10 includes a contact 1, a contact 2, a rotating shaft 11 system and a housing 12. The contact pressure is realized by a leaf spring 13 in the rotating shaft 11 system. The rotation of the mechanism operating shaft 8 drives the rotating shaft 11 of the contact system to rotate through the through shaft 7, driving the moving and static contacts to open and close. As shown in Figure 4.

The padlocking part includes a padlocking plate 18, a shaft 21 and a compression spring 19. One end of the compression spring 19 is fixed to the upper cover, and the other end is placed on the padlocking plate 18. The upper cover is provided with a sliding groove, and the operating shaft 8 is provided with a blocking rod 17. When the isolating switch needs to be padlocked, the padlocking plate 18 is pulled up, and the shaft 21 slides upward along the sliding groove. The padlocking plate 18 blocks the rotation of the operating shaft 8 to realize the opening and closing padlocking function; after the lock is withdrawn, the padlocking plate 18 automatically resets to the initial state under the pressure of the spring. As shown in Figure 5.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (2)

1. The isolating switch is characterized in that a quick opening and closing mechanism and an opening and closing padlock mechanism are arranged on a body of the isolating switch, the quick opening and closing mechanism is used for cutting off the isolating switch when power is off, and the opening and closing padlock mechanism is used for realizing the opening and closing padlock function without depending on a handle;

The isolating switch comprises a contact arc extinguishing system and a mechanism part, wherein the contact arc extinguishing system and the middle of the mechanism part are locked by a screw joint piece;

The mechanism part comprises a base, an operation shaft, a main torsion spring, an indicating piece, a reset tension spring and a penetrating shaft, wherein a spring hole, a reset spring rod and a penetrating shaft waist hole are formed in the operation shaft and are respectively connected with corresponding parts;

The base is provided with a sliding groove, the operating shaft is provided with a push rod, and the push rod pushes the indicating piece in the rotating process of the operating shaft, so that the leg part of the indicating piece slides in the sliding groove of the base, and the state indicating function is realized;

The contact arc extinguishing system comprises a contact I, a contact II, a rotating shaft system and a body shell, the contact pressure is realized through a plate spring in the rotating shaft system, and the rotation of a mechanism operating shaft drives the rotating shaft of the contact system to rotate through a penetrating shaft so as to drive the moving contact and the fixed contact to be separated and combined;

the padlock part comprises a padlock plate, a shaft and a pressure spring, one end of the pressure spring is fixed on an upper cover, one end of the pressure spring is placed on the padlock plate, the upper cover is provided with a sliding groove, the operating shaft is provided with a stop lever, when the padlock needs to be isolated, the padlock plate is pulled up, the shaft slides upwards along the sliding groove, and the padlock plate stops the rotation of the operating shaft, so that the function of opening and closing the padlock is realized; after the lock is withdrawn, the hanging lock plate automatically resets to the initial state under the pressure of the spring.

2. The disconnector according to claim 1, in which the screw comprises a through screw.