Contact protection structure of load isolation switch
By installing a detachable protective cover outside the insulated housing of the load isolation switch to seal the static contacts, the problem that the static contacts are susceptible to external influences when transported or idle is solved, effective protection of the static contacts is achieved, extending the service life and improving the protection level of the insulated housing.
Patent Information
- Application Number
- CN202421522175.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The static contacts of the load isolation switch are susceptible to external environment when transported or idle for a long time, resulting in wear or bumps, which in turn affects the contact with the moving contacts and causes poor contact.
A contact protection structure is designed, by providing a detachable protective cover outside the insulated housing, the static contacts are sealed to prevent the influence of the external environment. The protective cover is fixed to the outer side wall of the insulated housing through a plug hole and a plug socket, and a seal is provided thereon to further enhance the waterproof seal.
It effectively reduces the adverse effects of the external environment on the static contacts, provides dust-proof and collision-proof protection, extends the service life of the static contacts, and improves the protection level of the insulated shell.
Smart Images
Figure CN222775204U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of load isolating switches, and in particular to a contact protection structure of a load isolating switch. Background Art
[0002] At present, load isolation switches have increased the ability to carry and disconnect load currents to a certain extent compared to traditional isolation switches. Although its main function is still to provide an obvious and safe disconnection point to achieve circuit isolation, its design allows it to directly disconnect or connect a certain range of load currents under certain conditions, rather than just completely unloaded operations. In addition to the basic isolation function, the load isolation switch can disconnect and connect a certain load current under limited conditions (such as small currents or specific conditions), which allows it to replace circuit breakers for simple circuit control in some applications.
[0003] In order to facilitate the signal connection between the static contact and the external circuit in the load isolation switch in the related technology, one end of the static contact is fixedly set in the insulating housing, and the other end of the static contact extends to the outside of the insulating housing. However, when the load isolation switch is transported or idle for a long time, the exposed static contact is easily affected by the external environment and may be worn or bumped. Once the surface of the static contact is damaged, it will affect the contact with the moving contact to a certain extent, thereby causing poor contact. Utility Model Content
[0004] The present application provides a contact protection structure for a load isolating switch, which can effectively protect a static contact in an idle state, thereby reducing the adverse effects of the external environment on the static contact and achieving a better protection effect on the static contact.
[0005] The contact protection structure of a load isolating switch provided in the present application adopts the following technical solution:
[0006] A contact protection structure for a load isolating switch comprises an insulating shell for installing a static contact, wherein one end of the static contact extends from the outer wall of the insulating shell to the outside of the insulating shell; a protective cover is detachably mounted on the outside of the insulating shell, and the protective cover is used to seal the static contact extending to the outside of the insulating shell; a plug-in hole facing the protective cover is provided on the outer wall of the insulating shell, a socket facing the plug-in hole is integrally formed on the protective cover, the plug-in hole is used to be plugged in with the socket, and one side of the protective cover is fixed to the outer wall of the insulating shell by plugging the socket and the plug-in hole.
[0007] Preferably, a sealing gasket facing the static contact is provided on the protective cover, the sealing gasket is sleeved on the outside of the static contact, and the sealing gasket is in contact with the outer side wall of the insulating shell.
[0008] Preferably, the insulating shell includes a first splicing cover and a second splicing cover spliced to each other, and the protective cover is symmetrically arranged outside the left and right splicing surfaces of the first splicing cover and the second splicing cover.
[0009] Preferably, a first fixing cover and a second fixing cover are respectively provided on the outside of the upper and lower splicing surfaces of the first splicing cover and the second splicing cover, the first fixing cover and the second fixing cover are respectively located on the upper and lower sides of the protective cover, and the first fixing cover and the second fixing cover are clamped and fixed on the outer wall of the insulating shell.
[0010] Preferably, a first buckle is provided on the outer wall of the second fixed cover and is located on the same side as the protective cover, and a second buckle is integrally formed on the outer wall of the protective cover for mutual snap-fitting with the first buckle, and the side of the protective cover away from the socket is fixed to the outside of the insulating shell by snap-fitting between the first buckle and the second buckle.
[0011] Preferably, the upper side wall of the protective cover and the outer side wall of the first fixed cover are in close contact and sealed relationship with each other, and the lower side wall of the protective cover and the outer side wall of the second fixed cover are in close contact and sealed relationship with each other.
[0012] Preferably, a transparent observation window is provided on the first fixed cover.
[0013] In summary, the present application includes at least one of the following beneficial technical effects:
[0014] The static contacts on both sides are covered by protective covers, which can effectively reduce the adverse effects of the external environment on the static contacts, and play a role in dust and collision protection for the static contacts. The protective effect is good and the service life of the static contacts is extended to a certain extent;
[0015] Under the protection of the first fixed cover, the second fixed cover and the protective covers on both sides, the waterproof sealing performance of the joint surface between the first splicing cover and the second splicing cover is improved, and the protection level of the insulating shell is improved;
[0016] At the same time, it is also convenient to install and disassemble the first fixed cover, the second fixed cover and the protective covers on both sides, and the disassembly and assembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;
[0018] Figure 2 yes Figure 1 Schematic diagram of the local structure explosion;
[0019] Figure 3 yes Figure 2 Schematic diagram of the local structure explosion from another perspective.
[0020] Explanation of the reference numerals: 1. Insulating shell; 10. Plug-in hole; 11. First splicing cover; 12. Second splicing cover; 13. Card slot; 14. Card block; 2. Protective cover; 20. Plug-in socket; 21. Sealing gasket; 22. Second buckle; 3. First fixing cover; 30. Transparent observation window; 4. Second fixing cover; 40. First buckle. DETAILED DESCRIPTION
[0021] The present application is further described in detail below in conjunction with the accompanying drawings.
[0022] An embodiment of the present application discloses a contact protection structure of a load isolation switch.
[0023] Reference Figure 1 , Figure 2 The contact protection structure of the load isolating switch includes an insulating housing 1 for installing a static contact, and the insulating housing 1 includes a first splicing cover 11 and a second splicing cover 12 spliced to each other. One end of the static contact is inserted and fixed in the first splicing cover 11 and the second splicing cover 12 spliced to each other, and the other end of the static contact extends from the outer wall of the insulating housing 1 to the outside of the insulating housing 1.
[0024] like Figure 2 , Figure 3 As shown, two protective covers 2 are detachably installed on the outside of the insulating shell 1, and the two protective covers 2 are symmetrically arranged on the outside of the left and right splicing surfaces of the first splicing cover 11 and the second splicing cover 12, and the protective covers 2 seal the joints of the respective opposite splicing surfaces. The waterproof sealing of the joints of the left and right sides of the insulating shell 1 is further improved under the protection of the protective covers 2.
[0025] like Figure 2 , Figure 3 As shown, the protective cover 2 is used to seal the static contact extending to the outside of the insulating shell 1. The outer wall of the insulating shell 1 is provided with a plug hole 10 facing the protective cover 2. The protective cover 2 is integrally formed with a plug socket 20 facing each plug hole 10. The protective cover 2 is made of plastic with a certain elastic deformation ability. The plug hole 10 is used for the respective opposite plug sockets 20 to be inserted into the insulating shell 1. The upper side of the protective cover 2 is fixed to the outer wall of the insulating shell 1 by the mutual plug-in cooperation of the plug socket 20 and the plug hole 10.
[0026] like Figure 2 , Figure 3 As shown, the protective cover 2 is provided with a sealing gasket 21 facing the static contact, the sealing gasket 21 is sleeved outside the static contact, and the sealing gasket 21 is in contact with the outer wall of the insulating housing 1. The sealing gasket 21 can further improve the waterproof sealing around the static contact, thereby effectively preventing external moisture from entering the insulating housing 1 through the gap between the static contact and the insulating housing 1.
[0027] like Figure 2 , Figure 3 As shown, the first fixing cover 3 and the second fixing cover 4 are respectively arranged on the outside of the upper and lower joint surfaces of the first joint cover 11 and the second joint cover 12, and the first fixing cover 3 and the second fixing cover 4 are respectively located on the upper and lower sides of the protective cover 2. The first fixing cover 3 and the second fixing cover 4 are both provided with a card slot 13, and the outer side wall of the insulating housing 1 is provided with a card block 14 for mutually engaging with the respective opposite card slots 13. The first fixing cover 3 and the second fixing cover 4 can be detachably installed on the outside of the insulating housing 1 through the mutual engagement of the card block 14 with the card slot 13.
[0028] like Figure 2 , Figure 3 As shown, the outer wall of the second fixed cover 4 is integrally formed with a first buckle 40 located on the same side of the protective cover 2, and the outer wall of the protective cover 2 is integrally formed with a second buckle 22 for mutual engagement with the first buckle 40, and the second buckle 22 is located on the side of the protective cover 2 away from the socket 20. The side of the protective cover 2 away from the socket 20 is fixed to the outside of the insulating shell 1 by the engagement of the first buckle 40 and the second buckle 22. The upper side wall of the protective cover 2 and the outer side wall of the first fixed cover 3 are mutually attached and sealed, and the lower side wall of the protective cover 2 and the outer side wall of the second fixed cover 4 are mutually attached and sealed, so that the sealing of the joint surface of the first splicing cover 11 and the second splicing cover 12 can be further improved.
[0029] like Figure 2 , Figure 3 As shown, a transparent observation window 30 is provided on the first fixed cover 3, through which the operator can conveniently observe the opening and closing conditions inside the insulating housing 1, thereby further improving the operational safety.
[0030] The implementation principle is: the static contacts on both sides are covered by the protective cover 2, so as to effectively reduce the adverse effects of the external environment on the static contacts, play a role in dust and collision protection for the static contacts, and have a good protective effect, which prolongs the service life of the static contacts to a certain extent. Under the protection of the first fixed cover 3, the second fixed cover 4 and the protective covers 2 on both sides, the waterproof sealing of the joint surface of the first splicing cover 11 and the second splicing cover 12 is improved, and the protection level of the insulating housing 1 is improved.
[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A contact protection structure for a load isolating switch, comprising an insulating housing (1) for mounting a stationary contact, wherein one end of the stationary contact extends from an outer side wall of the insulating housing (1) to the outside of the insulating housing (1); characterized in that: A protective cover (2) is detachably mounted on the outside of the insulating shell (1), and the protective cover (2) is used to seal and cover the static contact extending outside the insulating shell (1); a plug hole (10) facing the protective cover (2) is provided on the outer wall of the insulating shell (1); a plug socket (20) facing the plug hole (10) is integrally formed on the protective cover (2); the plug hole (10) is used to be plugged in with the plug socket (20); one side of the protective cover (2) is fixed to the outer wall of the insulating shell (1) by plugging the plug socket (20) and the plug hole (10) together.
2. The contact protection structure of the load isolation switch according to claim 1 is characterized in that: The protective cover (2) is provided with a sealing gasket (21) facing the static contact, the sealing gasket (21) is sleeved outside the static contact, and the sealing gasket (21) and the outer side wall of the insulating housing (1) are in contact with each other.
3. The contact protection structure of the load isolation switch according to claim 2 is characterized in that: The insulating housing (1) comprises a first splicing cover (11) and a second splicing cover (12) spliced to each other, and the protective cover (2) is symmetrically arranged outside the left and right splicing surfaces of the first splicing cover (11) and the second splicing cover (12).
4. The contact protection structure of the load isolation switch according to claim 3 is characterized in that: A first fixed cover (3) and a second fixed cover (4) are respectively arranged outside the upper and lower joint surfaces of the first joint cover (11) and the second joint cover (12); the first fixed cover (3) and the second fixed cover (4) are respectively located on the upper and lower sides of the protective cover (2); and the first fixed cover (3) and the second fixed cover (4) are clamped and fixed on the outer side wall of the insulating housing (1).
5. The contact protection structure of the load isolation switch according to claim 4 is characterized in that: A first buckle (40) is provided on the outer wall of the second fixed cover (4) and is located on the same side as the protective cover (2); a second buckle (22) for engaging with the first buckle (40) is integrally formed on the outer wall of the protective cover (2); a side of the protective cover (2) away from the socket (20) is fixed to the outside of the insulating housing (1) by engaging the first buckle (40) with the second buckle (22).
6. The contact protection structure of the load isolation switch according to claim 4 is characterized in that: The upper side wall of the protective cover (2) and the outer side wall of the first fixed cover (3) are mutually fitted and sealed, and the lower side wall of the protective cover (2) and the outer side wall of the second fixed cover (4) are mutually fitted and sealed.
7. The contact protection structure of the load isolation switch according to claim 4 is characterized in that: The first fixed cover (3) is provided with a transparent observation window (30).