An earth leakage protector with a guard assembly

Abstract

The utility model discloses a leakage protector with protection subassembly relates to leakage protector technical field, including leakage protector main part, the top fixedly connected with connecting wire of leakage protector main part, the top fixedly connected with connecting head of connecting wire, one end fixedly connected with support cylinder of connecting head, the end away from connecting head of support cylinder equidistant fixedly connected with three metal tongues of circumference, be provided with the protection mechanism for protecting metal tongue on support cylinder. The utility model discloses a protection mechanism, can make metal tongue convenient exposure through sliding, therefore need not to dismantle protection part, can make metal tongue and the jack hole of socket smooth and stable plug -in, when not needing using leakage protector, by wrapping shielding to metal tongue, to this realization carries out effective protection to metal tongue, can effectively prevent metal tongue from being stepped and extruded, and the situation of bending deformation occurs.

Description

Technical Field

[0001] This utility model relates to the field of residual current device (RCD) technology, specifically an RCD with protective components. Background Technology

[0002] A residual current device (RCD) is an electrical safety protection device used to prevent electric shock and electrical fires caused by leakage current in electrical equipment or lines. It monitors the current difference between the live wire and the neutral wire in real time. When the difference exceeds a preset safety threshold, it will automatically cut off the power supply within tens of milliseconds, thus achieving the dual function of protecting personal safety and preventing damage to electrical equipment / lines. A residual current plug is a portable safety device that integrates the residual current protection function module into the power plug. It is an individual-level electrical safety protection device that belongs to the sub-category of residual current devices (RCDs).

[0003] Existing residual current circuit breakers (RCCBs) are plug-and-play and portable, providing an extra level of protection for high-risk electrical appliances (such as water heaters and hair dryers, which are prone to contact with water and pose a high risk of electric shock). However, in factory environments, when not in use, the metal tongues on the RCCBs are exposed. If employees are not careful in the work environment, they may step on or squeeze the RCCBs, causing the metal tongues to bend and deform, thus affecting the normal use of the RCCBs. Summary of the Invention

[0004] The purpose of this invention is to provide a leakage current protector with protective components to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A residual current device (RCD) with protective components includes an RCD body, a connecting wire fixedly connected to the top of the RCD body, a connector fixedly connected to the top of the connecting wire, a support cylinder fixedly connected to one end of the connector, and three metal tongues fixedly connected circumferentially at equal intervals to the end of the support cylinder away from the connector. The support cylinder is provided with a protective mechanism for protecting the metal tongues. The protective mechanism includes: A fixed retaining ring is fixedly connected to the outer wall of the support cylinder. A protective sleeve is slidably sleeved on the outer wall of the fixed retaining ring. The protective sleeve is slidably connected to the support cylinder. All three metal tongues are located inside the protective sleeve. The protective sleeve has a movable groove for the metal tongues to slide.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative embodiment, the protective mechanism further includes: A plug-in assembly mounted on the protective sleeve; The plug-in assembly includes: Two mating plates are symmetrically fixedly connected to one end of the protective sleeve. The outer wall of the two mating plates away from the protective sleeve is truncated square. The connector head is provided with a positioning slot for the mating plates to be inserted. The protective sleeve is provided with a first limiting component for limiting the movement of the protective sleeve; The support cylinder is provided with a second limiting component for guiding and limiting the protective sleeve. The connector head is provided with a locking component for locking and limiting the mating of the insert plate.

[0007] In one alternative: the first limiting component is a limiting slide cylinder fixedly connected to the inner wall of one end of the protective sleeve, the limiting slide cylinder is located between three metal tongues, and the support cylinder is slidably sleeved on the outer wall of the limiting slide cylinder; The limiting slide is provided with a first reset component.

[0008] In one alternative: the first reset component is a first spring disposed inside the limiting slide cylinder, one end of the first spring being in contact with the inner wall of the limiting slide cylinder, and the other end of the first spring being in contact with the inner wall of the connector.

[0009] In one alternative embodiment, the second limiting component includes: Multiple fixed guide plates are circumferentially and equidistantly fixed to the outer wall of the support cylinder. The multiple fixed guide plates are located between the connector and the fixed retaining ring. The fixed guide plates are fixedly connected to the connector and the fixed retaining ring. The protective sleeve is slidably sleeved on the outer wall of the multiple fixed guide plates.

[0010] In one alternative embodiment, the engagement assembly includes: Two connecting slide rods are symmetrically fixedly connected inside the connector. The two connecting slide rods are located between two mating plates. A positioning block is fixedly connected to the side of the two connecting slide rods that is away from each other. The outer wall of the positioning block that is away from the connecting slide rod is inclined. The mating plate is provided with positioning slots for the outer walls of the positioning blocks to match each other. A second reset component is provided on the connecting slide bar; The connecting slide bar is equipped with a pushing component.

[0011] In one alternative: the second reset component is a second spring sleeved on the outer wall of the connecting slide rod, one end of the second spring is in contact with the outer wall of the positioning block, and the other end of the second spring is in contact with the inner wall of the connector.

[0012] In one alternative embodiment, the push component includes: A connecting slide plate is fixedly connected to the side of the connecting slide rod away from the positioning block. A pressing push plate is fixedly connected to the end of the connecting slide plate away from the support cylinder. The pressing push plate extends to the outside of one side of the connector. Both the pressing push plate and the connecting slide plate are slidably connected to the connector.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through its protective mechanism, allows the metal tongue to be easily exposed by sliding. Therefore, without removing the protective components, the metal tongue can be smoothly and stably plugged into the socket hole. When a leakage current protector is not needed, the metal tongue is effectively protected by wrapping and shielding it, thus preventing it from being stepped on, squeezed, bent, or deformed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the protective sleeve of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the limiting slide of this utility model.

[0017] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0018] Figure label annotations: 1. Main body of residual current device; 201. Fixed guide plate; 202. Connecting plate; 203. Fixed retaining ring; 204. Protective sleeve; 205. First spring; 206. Limiting slide cylinder; 207. Pressing push plate; 208. Positioning block; 209. Second spring; 2010. Connecting slide rod; 2011. Connecting slide plate; 3. Support cylinder; 4. Connector; 5. Metal tongue; 6. Connecting wire. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] In one embodiment, such as Figures 1-4 As shown, a residual current device (RCD) with protective components includes an RCD body 1, a connecting wire 6 fixedly connected to the top of the RCD body 1, a connector 4 fixedly connected to the top of the connecting wire 6, a support cylinder 3 fixedly connected to one end of the connector 4, and three metal tongues 5 fixedly connected circumferentially at equal intervals at the end of the support cylinder 3 away from the connector 4. The support cylinder 3 is provided with a protective mechanism for protecting the metal tongues 5. The protective mechanism includes: a fixed retaining ring 203 fixedly connected to the outer wall of the support cylinder 3; a protective sleeve 204 slidably sleeved on the outer wall of the fixed retaining ring 203; the protective sleeve 204 slidably connected to the support cylinder 3; three metal tongues 5 located inside the protective sleeve 204; and a movable groove for sliding the metal tongues 5 is provided on the protective sleeve 204. In this embodiment, during use, the protective mechanism allows the metal tongue 5 to be easily exposed, so that the metal tongue 5 can be plugged into the socket. When not in use, the above operation can be reversed to release the locking limit of the protective sleeve 204, so that when the connector 4 is pulled out, the protective sleeve 204 can slide back to its original position, thereby protecting the metal tongue 5 through the protective sleeve 204. In one embodiment, such as Figures 1-4 As shown, the protective mechanism also includes: a plug-in assembly disposed on the protective sleeve 204; The plug-in assembly includes two mating plug plates 202 that are symmetrically fixedly connected to one end of the protective sleeve 204. The outer wall of the end of the two mating plug plates 202 away from the protective sleeve 204 is truncated square. The connector 4 is provided with a positioning slot for the mating plug plates 202 to be inserted. The protective sleeve 204 is provided with a first limiting component for limiting the movement of the protective sleeve 204; The support cylinder 3 is provided with a second limiting component for guiding and limiting the protective sleeve 204; The connector 4 is provided with a locking component for locking and limiting the mating insert 202; The first limiting component is a limiting slide cylinder 206 fixedly connected to the inner wall of one end of the protective sleeve 204. The limiting slide cylinder 206 is located between three metal tongues 5, and the support cylinder 3 is slidably sleeved on the outer wall of the limiting slide cylinder 206. A first reset component is provided on the limiting slide 206; The first reset component is a first spring 205 disposed inside the limiting slide 206. One end of the first spring 205 is in contact with the inner wall of the limiting slide 206, and the other end of the first spring 205 is in contact with the inner wall of the connector 4. The second limiting component includes: multiple fixed guide plates 201 that are circumferentially and equidistantly fixed to the outer wall of the support cylinder 3. The multiple fixed guide plates 201 are located between the connector 4 and the fixed retaining ring 203. The fixed guide plates 201 are fixedly connected to the connector 4 and the fixed retaining ring 203. The protective sleeve 204 is slidably sleeved on the outer wall of the multiple fixed guide plates 201. Through the mutual cooperation of the plug-in component, the first limiting component, the first reset component and the second limiting component, the protective sleeve 204 can reciprocate and slide along the outer wall of the support cylinder 3. In one embodiment, such as Figures 3-4As shown, the engaging assembly includes: two connecting slide rods 2010 symmetrically fixedly connected inside the connector 4, the two connecting slide rods 2010 being located between two mating plates 202, and positioning blocks 208 fixedly connected to the sides of the two connecting slide rods 2010 that are far apart from each other. The outer wall of the side of the positioning block 208 that is far away from the connecting slide rod 2010 is inclined, and positioning slots are provided on the mating plates 202 for the outer walls of the positioning blocks 208 to fit together. A second reset assembly is provided on the connecting slide bar 2010; A push component is provided on the connecting slide bar 2010; The second reset component is a second spring 209 sleeved on the outer wall of the connecting slide bar 2010. One end of the second spring 209 contacts the outer wall of the positioning block 208, and the other end of the second spring 209 contacts the inner wall of the connector 4. Through the cooperation of the locking component and the second reset component, the locking and limiting of the docking plate 202 can be achieved to facilitate the convenient limiting of the protective sleeve 204. In one embodiment, such as Figures 1-4 As shown, the pushing component includes: a connecting slide plate 2011 fixedly connected to the side of the connecting slide bar 2010 away from the positioning block 208; a pressing push plate 207 fixedly connected to the end of the connecting slide plate 2011 away from the support cylinder 3; the pressing push plate 207 extends through to the outside of one side of the connector 4; both the pressing push plate 207 and the connecting slide plate 2011 are slidably connected to the connector 4; through the cooperation of the pressing push plate 207 and the connecting slide plate 2011, the locking limit of the docking plate 202 can be easily released when not in use.

[0021] The above embodiment discloses a leakage current protector with protective components. In use, the protective sleeve 204 is pushed to slide along the outer wall of the support cylinder 3, the fixed guide plate 201, and the fixed retaining ring 203. At this time, the limiting slide cylinder 206 slides along the inner wall of the support cylinder 3 under the push of the protective sleeve 204. At the same time, the limiting slide cylinder 206 retracts by moving and squeezing the first spring 205 until the protective sleeve 204 contacts the outer wall of one end of the support cylinder 3 and the connector 4. During this process, the metal tongue 5 can be exposed by moving the slide groove. At the same time, the docking plate 202 is pushed into the positioning slot by the protective sleeve 204. At this time, the positioning block 208 is pressed by the docking plate 202 and pushes the connecting slide plate 2011 along the inner wall of the connector 4 through the connecting slide rod 2010. At the same time, the pressing push plate 207 slides synchronously along the inner wall of the connector 4 under the action of the connecting slide plate 2011. At this time, the positioning block 208 retracts by moving and pressing the second spring 209. When the positioning slot moves to one side of the positioning block 208 under the action of the docking plate 202, the second spring 209 pushes the positioning block 208 into the positioning slot by rebounding. This can lock and limit the docking plate 202, thereby conveniently fixing the protective sleeve 204. When not in use, the above operation can be reversed by squeezing and pressing the push plate 207 to release the locking limit of the mating plate 202. When the connector 4 is pulled out, the rebound of the first spring 205 pushes the limiting slide cylinder 206 to slide the protective sleeve 204 back to its original position, so that the metal tongue 5 can be protected by the protective sleeve 204.

[0022] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A residual current device (RCD) with protective components, comprising an RCD body (1), wherein a connecting wire (6) is fixedly connected to the top end of the RCD body (1), a connector (4) is fixedly connected to the top end of the connecting wire (6), a support cylinder (3) is fixedly connected to one end of the connector (4), and three metal tongues (5) are fixedly connected circumferentially at equal intervals to the end of the support cylinder (3) away from the connector (4), characterized in that, The support cylinder (3) is provided with a protective mechanism for protecting the metal tongue (5); The protective mechanism includes: a fixed retaining ring (203) fixedly connected to the outer wall of the support cylinder (3), a protective sleeve (204) slidably sleeved on the outer wall of the fixed retaining ring (203), the protective sleeve (204) slidably connected to the support cylinder (3), the three metal tongues (5) are all located inside the protective sleeve (204), and the protective sleeve (204) is provided with a movable groove for the metal tongues (5) to slide.

2. A residual current device with protective components according to claim 1, characterized in that, The protective mechanism also includes: a plug-in assembly disposed on the protective sleeve (204); The plug-in assembly includes two mating plugs (202) symmetrically fixedly connected to one end of the protective sleeve (204). The outer wall of the two mating plugs (202) away from the protective sleeve (204) is truncated square. The connector (4) is provided with a positioning slot for the mating plugs (202) to be inserted. The protective sleeve (204) is provided with a first limiting component for limiting the movement of the protective sleeve (204); The support cylinder (3) is provided with a second limiting component for guiding and limiting the protective sleeve (204); The connector (4) is provided with a locking component for locking and limiting the engagement of the mating plate (202).

3. A residual current device with protective components according to claim 2, characterized in that, The first limiting component is a limiting slide cylinder (206) fixedly connected to the inner wall of one end of the protective sleeve (204). The limiting slide cylinder (206) is located between three metal tongues (5), and the support cylinder (3) is slidably sleeved on the outer wall of the limiting slide cylinder (206). The limiting slide (206) is provided with a first reset component.

4. A residual current device with protective components according to claim 3, characterized in that, The first reset component is a first spring (205) disposed inside the limiting slide (206). One end of the first spring (205) is in contact with the inner wall of the limiting slide (206), and the other end of the first spring (205) is in contact with the inner wall of the connector (4).

5. A residual current device with protective components according to claim 2, characterized in that, The second limiting component includes: multiple fixed guide plates (201) that are circumferentially and equidistantly fixed to the outer wall of the support cylinder (3), the multiple fixed guide plates (201) being located between the connector (4) and the fixed retaining ring (203), the fixed guide plates (201) being fixedly connected to the connector (4) and the fixed retaining ring (203), and the protective sleeve (204) being slidably sleeved on the outer wall of the multiple fixed guide plates (201).

6. A residual current device with protective components according to claim 2, characterized in that, The engaging assembly includes two connecting slide rods (2010) symmetrically fixedly connected inside the connector (4). The two connecting slide rods (2010) are located between two mating plates (202). A positioning block (208) is fixedly connected to the side of the two connecting slide rods (2010) that is far away from each other. The outer wall of the positioning block (208) that is far away from the connecting slide rod (2010) is inclined. The mating plate (202) is provided with a positioning slot for the outer walls of the positioning blocks (208) to fit together. A second reset assembly is provided on the connecting slide rod (2010); A pusher assembly is provided on the connecting slide bar (2010).

7. A residual current device with protective components according to claim 6, characterized in that, The second reset component is a second spring (209) sleeved on the outer wall of the connecting slide (2010). One end of the second spring (209) is in contact with the outer wall of the positioning block (208), and the other end of the second spring (209) is in contact with the inner wall of the connector (4).

8. A residual current device with protective components according to claim 6, characterized in that, The pushing component includes: a connecting slide plate (2011) fixedly connected to the side of the connecting slide bar (2010) away from the positioning block (208), and a pressing push plate (207) fixedly connected to the end of the connecting slide plate (2011) away from the support cylinder (3). The pressing push plate (207) extends through to the outside of one side of the connector (4), and both the pressing push plate (207) and the connecting slide plate (2011) are slidably connected to the connector (4).

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