Action component for switching device and switching device

Abstract

The utility model relates to the technical field of switching devices, in particular to an action part for a switching device and the switching device, which comprise a movable rod made of high-temperature-resistant plastics, the movable rod is sleeved with a sleeve and a movable spring assembly which are sequentially arranged outwards along the radial direction of the movable rod, the sleeve is in close fit with the movable rod, and the movable spring assembly is arranged on the movable rod. The movable spring assembly is provided with an installation hole, the outer diameter of the sleeve is smaller than the inner diameter of the installation hole, and therefore the movable spring assembly and the movable rod are connected in a relative sliding mode, and a fixing piece is further arranged at the tail end of the movable rod. And the fixed part is matched with the movable rod to form the limiting of the movable spring assembly in the axial direction of the movable rod. The movable rod made of plastic is lighter in weight, so that the weight of the action part is reduced, the action time of the action part is shortened, and the response speed of the switching device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch electrical appliances, in particular to an action component used for a switch electrical appliance and the switch electrical appliance. Background Art

[0002] A movable rod is usually provided in a switch electrical appliance. When the magnetic field of the electromagnetic component changes, the movable rod moves to drive the movable contact to move, thereby closing or disconnecting the contact group consisting of the movable contact and the static contact. However, the existing movable rod is usually made of metal materials such as brass or stainless steel. The metal material is heavy. The magnetic field change of the electromagnetic component needs to reach a certain intensity to make the movable rod move. It takes a certain amount of time for the magnetic field intensity of the electromagnetic component to increase. Therefore, the response time of the movable rod will be prolonged, and the response speed of the switch electrical appliance will be reduced. Summary of the invention

[0003] The utility model aims to provide an action component for a switch and a switch, which improves the response speed of the switch by reducing the weight of a movable rod, so as to solve the problem that the response speed of the switch is reduced due to the heavy movable rod.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model includes: an actuating component for a switching electrical appliance, comprising a movable rod made of high-temperature resistant plastic, the movable rod sleeve is provided with a sleeve and a movable spring assembly arranged radially outward in sequence along the movable rod, the sleeve and the movable rod are tightly matched, the movable spring assembly is provided with a mounting hole, and the outer diameter of the sleeve is smaller than the inner diameter of the mounting hole, so that the movable spring assembly and the movable rod form a relatively sliding connection relationship, and a fixing piece is also provided at the end of the movable rod, and the fixing piece cooperates with the movable rod to form a limit of the movable spring assembly in the axial direction of the movable rod.

[0005] In one embodiment, a blind hole is formed at the end of the movable rod, a through hole is formed on the fixing member, a threaded connector is passed through the through hole and forms a threaded fit with the blind hole, so that the fixing member is fixedly connected to the movable rod.

[0006] In one embodiment, the sleeve is located outside the blind hole, and in the axial direction of the movable rod, the sleeve covers the blind hole.

[0007] In one embodiment, the movable rod is provided with a flange extending radially outward, and an overtravel spring is sleeved outside the movable rod. One end of the overtravel spring abuts against the dynamic spring assembly, and the other end forms an abutting connection relationship with the flange.

[0008] In one embodiment, the sleeve is made of metal material.

[0009] In one embodiment, the movable rod is provided with a sleeve portion, the sleeve is sleeved in the sleeve portion, the inner diameter of the sleeve is equal to or greater than the outer diameter of the sleeve portion, and the difference between the inner diameter of the sleeve and the outer diameter of the sleeve portion is not greater than 0.1 mm, so that the movable rod and the sleeve form a tight fit.

[0010] The technical solution of the utility model also includes: a switch electrical appliance, comprising the above-mentioned action component for the switch electrical appliance.

[0011] In one embodiment, the switching device is a relay.

[0012] The beneficial effects of the utility model are:

[0013] 1. The movable rod made of plastic is lighter, thereby reducing the mass of the moving parts, which is conducive to shortening the action time of the moving parts, thereby improving the response speed of the switch electrical appliance.

[0014] 2. The movable rod made of plastic is non-conductive and can isolate the load from the electromagnetic components. Therefore, there is no need to set up additional insulating isolation parts, which can reduce the number of parts and simplify the structure of the moving parts.

[0015] 3. The sleeve disposed between the movable rod and the dynamic spring assembly plays a wear-resistant role and can prevent the plastic movable rod from being worn due to relative sliding of the movable rod and the dynamic spring assembly.

[0016] 4. The connection between the threaded connector and the movable rod may cause the movable rod to be stretched and deformed, thereby affecting the matching accuracy between the movable rod and the dynamic spring assembly. The provision of a sleeve can limit the deformation of the movable rod and improve the matching accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural diagram of Example 1 of the present utility model.

[0018] Figure 2 It is a front view of embodiment 2 of the present utility model.

[0019] Figure 3 yes Figure 2 AA section view.

[0020] Among them: 1 movable rod, 11 flange, 12 sleeve connection part, 2 sleeve, 3 moving spring assembly, 31 mounting hole, 32 moving contact, 4 fixing part, 5 threaded connection part, 6 overtravel spring, 7 gasket, 8 moving iron core.

[0021] 100 actuating parts, 200 electromagnetic parts, 300 base parts, 301 static contacts. DETAILED DESCRIPTION

[0022] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] Example 1

[0024] See also Figure 1 As shown, the utility model discloses an action component 100 for a switch electrical appliance, and the action component is used to act under the action of an electromagnetic component, so as to close or disconnect the moving and static contacts. The action component 100 includes a movable rod 1 made of high-temperature resistant plastic, which is preferably high-temperature resistant nylon in this example, and can also be LCP or other high-temperature resistant lightweight plastics in other embodiments. The movable rod 1 is made of high-temperature resistant plastic, which can prevent the high temperature generated during the action of the moving and static contacts from melting the movable rod 1, thereby improving the life and reliability of the movable rod 1. The movable rod 1 is fixedly connected to the moving iron core 8, and the movable rod 1 is sleeved with a sleeve 2 and a movable spring assembly 3 arranged radially outward in sequence along the movable rod 1. The sleeve 2 and the movable rod 1 are tightly matched, and the movable spring assembly 3 is provided with a mounting hole 31, and the outer diameter of the sleeve 2 is smaller than the inner diameter of the mounting hole 31, so that the movable spring assembly 3 and the movable rod 1 form a relatively sliding connection relationship, and more specifically, a relatively sliding connection relationship is indirectly formed with the help of the sleeve 2. The movable spring assembly 3 is also provided with a movable contact 32. With the movement of the movable spring assembly 3, the movable contact 32 is closed or disconnected with the static contact. The movable rod 1 made of plastic is lighter, thereby reducing the mass of the action component 100, which is conducive to shortening the action time of the action component, thereby improving the response speed of the switch. In addition, the movable rod 1 made of plastic is non-conductive and can isolate the load and the electromagnetic component, so there is no need to set up an insulating isolation piece, which can reduce the number of parts and simplify the structure of the action component 100.

[0025] A fixing part 4 is also provided at the end of the movable rod 1, and the fixing part 4 cooperates with the movable rod 1 to limit the movable spring assembly 3 in the axial direction of the movable rod 1. The movable rod 1 is provided with a flange 11 extending radially outward, and an overtravel spring 6 is also sleeved on the outside of the movable rod 1, one end of the overtravel spring 6 abuts against the movable spring assembly 3, and the other end forms an abutting connection relationship with the flange 11. A groove is provided on the side of the flange 11 facing the movable spring assembly 3, and a gasket 7 made of a metal material is provided in the groove, and one end of the overtravel spring 6 abuts against the gasket 7 to form an abutting relationship with the flange 11, more specifically, the overtravel spring 6 indirectly abuts against the flange 11.

[0026] The end of the movable rod 1 is provided with a blind hole, the fixing member 4 is provided with a through hole, the threaded connector 5 is passed through the through hole and forms a threaded fit with the blind hole, so that the fixing member 4 is fixedly connected to the movable rod 1. The sleeve 2 is located outside the blind hole, and in the axial direction of the movable rod 1, the sleeve 2 covers the blind hole. The movable rod 1 is provided with a sleeve connection portion 12, the sleeve 2 is sleeved on the sleeve connection portion 12, the inner diameter of the sleeve 2 is equal to or greater than the outer diameter of the sleeve connection portion 12, and the difference between the inner diameter of the sleeve 2 and the outer diameter of the sleeve connection portion 12 is not greater than 0.1 mm, so that the movable rod 1 and the sleeve 2 form a tight fit after the self-tapping screw is tightened. The movable rod 1 in this example is made of plastic, and therefore the threaded connector 5 connecting the fixing member 4 and the movable rod 1 is a self-tapping screw. In the process of the self-tapping screw being locked to the plastic movable rod 1, the plastic movable rod 1 may be deformed due to the locking. If the sleeve 2 is not provided and the movable spring assembly 3 is in direct contact with the movable rod 1, the installation accuracy of the movable spring assembly 3 will be reduced. The sleeve 2 can limit the deformation of the sleeve 12 of the movable rod 1, thereby improving the installation accuracy of the movable spring assembly 3 and the movable rod 1.

[0027] Since the sleeve 2 and the movable spring assembly 3 slide relative to each other, and the movable spring assembly 3 is made of a metal conductive material, in order to improve the wear resistance of the sleeve 2 and prevent the sleeve 2 from excessive wear, the sleeve 2 is made of a metal material, preferably brass in this example. If the sleeve 2 is not provided, the movable rod 1 and the movable spring assembly 3 slide directly, and the movable rod made of plastic will wear, which will reduce the action accuracy of the switch after long-term use.

[0028] Example 2

[0029] See also Figure 2 and Figure 3 As shown, the utility model also discloses a switch device, including an action component for a switch device according to embodiment 1. In this example, the switch device is a relay, which also includes an electromagnetic component 200 and a base component 300, and the base component 300 is provided with a static contact 301 corresponding to the moving contact 32.

[0030] The switch electrical appliance refers to the switch electrical appliance with the terms and definitions in GB / T 5226.1-2019 / IEC 60204-1:2016, i.e., an appliance used to connect or disconnect one or more circuit currents. Its specific component form may be a circuit breaker, a contactor, a disconnector, etc. in addition to the relay described in Example 2. Since the switch electrical appliances other than relays contain the operating parts of the switch electrical appliances, they also have their corresponding beneficial technical effects, which will not be repeated here.

[0031] Although the present invention is specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that the remaining undescribed portions are prior art, and that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. An operating component for a switch electrical appliance, characterized in that: It comprises a movable rod made of high temperature resistant plastic, the movable rod sleeve is provided with a sleeve and a dynamic spring assembly which are arranged radially outward in sequence along the movable rod, the sleeve is tightly fitted with the movable rod, the dynamic spring assembly is provided with a mounting hole, and the outer diameter of the sleeve is smaller than the inner diameter of the mounting hole, so that the dynamic spring assembly and the movable rod form a relatively sliding connection relationship, and a fixing piece is also provided at the end of the movable rod, and the fixing piece cooperates with the movable rod to form a limit position of the dynamic spring assembly in the axial direction of the movable rod.

2. The actuating component for a switch electrical appliance according to claim 1, characterized in that: A blind hole is formed at the end of the movable rod, a through hole is formed at the fixing piece, a threaded connection piece is passed through the through hole and forms a threaded fit with the blind hole, so that the fixing piece is fixedly connected to the movable rod.

3. The actuating component for a switch electrical appliance according to claim 2, characterized in that: The sleeve is located outside the blind hole, and in the axial direction of the movable rod, the sleeve covers the blind hole.

4. The actuating component for a switch electrical appliance according to claim 1, characterized in that: The movable rod is provided with a flange extending radially outward, and an overtravel spring is sleeved outside the movable rod. One end of the overtravel spring abuts against the dynamic spring assembly, and the other end forms an abutting connection relationship with the flange.

5. The actuating component for a switch electrical appliance according to claim 1, characterized in that: The sleeve is made of metal material.

6. The actuating component for a switch electrical appliance according to claim 1, characterized in that: The movable rod is provided with a sleeve portion, the sleeve is sleeved in the sleeve portion, the inner diameter of the sleeve is equal to or greater than the outer diameter of the sleeve portion, and the difference between the inner diameter of the sleeve and the outer diameter of the sleeve portion is not greater than 0.1 mm, so that the movable rod and the sleeve form a tight fit.

7. A switch electrical appliance, characterized in that: It comprises an actuating component for a switching electrical appliance as described in any one of claims 1-6.

8. A switch device according to claim 7, characterized in that: The switching device is a relay.

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