CN107516797B

CN107516797B - Protective door mechanism of socket

Info

Publication number: CN107516797B
Application number: CN201710736662.9A
Authority: CN
Inventors: 吉红杰
Original assignee: Tcl Legrand International Electrical Huizhou Co ltd
Current assignee: Legrand intelligent electric (Huizhou) Co.,Ltd.
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2020-09-15
Anticipated expiration: 2037-08-24
Also published as: CN107516797A

Abstract

The invention relates to the technical field of electrical safety, in particular to a protective door mechanism of a socket, which comprises a base, a control clip and a protective door, wherein the base is provided with a jack through which a plug and a bolt pass; the protection door comprises two protection half doors which are oppositely arranged, the two protection half doors can move relatively and are provided with first positions for covering the jacks; the control clip is arranged on the base and used for limiting the relative movement of the two protective half doors; when the plug bolt acts on the control clip, the control clip relieves the limitation on the two protection half doors, so that the two protection half doors can leave the first position under the pushing of the plug bolt. The protective door mechanism of the socket utilizes the control clip to control the action of the protective door, and completely meets the design requirement of the protective door of the socket. In addition, the single pin insertion prevention function is realized without depending on the deflection of the protection door, and the relative movement of the two protection half doors is limited by the control clip, so that the reliability is high.

Description

Protective door mechanism of socket

Technical Field

The invention relates to the technical field of electrical safety, in particular to a protective door mechanism of a socket.

Background

The protection door of a socket, such as a two-hole socket, has the following requirements: when the plug double pins are inserted simultaneously, the protective door can be opened, and the plug pin can be inserted into the socket sleeve to get electricity; when a single pin is inserted into the single jack or a similar object (such as a screwdriver) is inserted into the single jack, the protective door is not opened, so that the electric shock prevention effect is achieved; reaching IP4 protection level (i.e. tiny objects cannot touch the socket internal live parts).

According to the traditional protective door mechanism, the protective door is opened in a straight forward or lateral sliding mode, or the protective door is opened in a rotating mode around a certain central shaft and is reset by means of spring pressure, and when a single pin is inserted, the protective door deflects to interfere with other structures, so that the purpose that the single pin is inserted into the protective door and is not opened is achieved.

However, since the principle that the deflection of the protective door interferes with other structures to achieve the purpose of preventing the insertion of a single pin and preventing electric shock is adopted, the clearance between the protective door and the interference structure cannot be too large, generally about 0.4mm, and due to processing and assembling errors, two results are caused when a customer uses the protective door: if the gap is too large, the foreign object insertion prevention effect of IP4 cannot be achieved, and the electrical safety is reduced; if this clearance undersize, the shutter takes place to interfere with the structure with interfering when easily leading to normal bolt to insert, makes the shutter open the difficulty, inside the plug bolt is difficult to insert the socket, influences user's normal use. Therefore, the conventional socket protection door mechanism has the phenomenon of poor reliability generally.

Disclosure of Invention

Therefore, it is necessary to provide a protective door mechanism for a socket, which has high reliability and can satisfy various requirements, in order to solve the problem of poor reliability of the conventional protective door mechanism.

The above purpose is realized by the following technical scheme:

a protective door mechanism of a socket comprises a base, a control clip and a protective door, wherein the base is provided with jacks for plugs and bolts to pass through;

the protection door comprises two protection half doors which are oppositely arranged, the two protection half doors can move relatively and are provided with first positions for covering the jacks;

the control clip is arranged on the base and used for limiting the relative movement of the two protective half doors; when the plug bolt acts on the control clip, the control clip releases the limitation on the two protection half doors, so that the two protection half doors can move relatively under the pushing of the plug bolt and leave the first position simultaneously.

In one embodiment, the protective half-door comprises a driving block and an extension arm, wherein the driving block is used for covering the jack;

one end of each extension arm is connected with the driving block, and the two extension arms are positioned between the two driving blocks; the control clip is positioned on one side of the protective door, which is far away from the base, the control clip is provided with driving bayonets corresponding to the driving blocks, and each driving bayonet is correspondingly provided with at least one limiting clip;

each extension arm is provided with a limit structure matched with the limit clips on the two drive bayonets; when the plug bolt is inserted into the driving bayonet, the limiting clamp is forced to be separated from the limiting structure so as to release the extension arm; the plug pins continue to be inserted to push both drive blocks simultaneously out of the first position covering the receptacles.

In one embodiment, two ends of the control clip are respectively provided with two elastic arms, and the ends of the two elastic arms form a driving bayonet; the limiting clamp is arranged at the end part of the elastic arm;

each extension arm comprises a first sub-arm and a second sub-arm; the first sub-arm and the second sub-arm are respectively positioned at two opposite sides of the driving block; the limiting structures are arranged at two ends of the first sub-arm and two ends of the second sub-arm.

In one embodiment, the first sub-arm and the second sub-arm of each extension arm are arranged in a staggered manner, and the first sub-arm of one extension arm corresponds to the second sub-arm of the other extension arm.

In one embodiment, the limiting structure is a clamping groove, and the limiting clamp is a clamping column.

In one embodiment, each drive block has a drive ramp, the two drive ramps being oppositely directed and facing away from each other.

In one embodiment, a slide way for sliding the plug bolt penetrates through the driving inclined plane along the direction of relative movement of the two driving blocks.

In one embodiment, a reset mechanism is further arranged between the two driving blocks and used for resetting the two driving blocks to the first position.

In one embodiment, the return mechanism is a spring.

In one embodiment, the base is oppositely provided with protective door positioning plates, and the protective door is arranged between the two protective door positioning plates; when the protective door is located at the first position, the protective door is abutted to the protective door positioning plate.

The protection door mechanism of above-mentioned socket, utilize the action of control checkpost control shutter, act on the control checkpost when plug bolt, make the control checkpost relieve the restriction to two protection half doors, two protection half doors can leave the primary importance that covers the jack simultaneously under the promotion of plug bolt relatively movable, thereby only can just open the shutter when the double-inserted bolt inserts, and when single round pin inserts, because the control checkpost is to the limiting action of shutter, the shutter does not open. And as long as the structure of reasonable design control checkpost, when plug bolt acted on the control checkpost, thereby make the control checkpost remove the restriction to the shutter and open the shutter, and other foreign matters can not make the control checkpost remove the restriction to the shutter when acting on the control checkpost, and the shutter can't be opened to effectively avoid inserting the dangerous condition that takes place to electrocute because of other foreign matters, satisfy the designing requirement to the socket shutter. In addition, the function of preventing the single pin from being inserted is realized without depending on the deflection of the protective door, but the relative linear motion of the two protective half doors is limited by the control clip, so that the problem of poor reliability caused by the fit clearance of the protective door and the interference structure can be solved.

Drawings

Fig. 1 is a schematic structural diagram of a protection door mechanism of a socket according to an embodiment of the present invention;

fig. 2 is an exploded view of a protection door mechanism of a socket according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the operation of the shutter mechanism of the receptacle when the dual latch is inserted into the receptacle according to an embodiment of the present invention;

FIG. 4 is a schematic partial cross-sectional view of a shutter mechanism of a receptacle according to an embodiment of the present invention;

FIG. 5 is a first schematic view of the protective door mechanism of the socket shown in FIG. 4 in a state of being inserted into a double plug;

FIG. 6 is a second schematic view of the protective door mechanism of the receptacle shown in FIG. 4 in a state where a double plug is inserted;

fig. 7 is a schematic view showing a state where a single plug is inserted into the shutter mechanism of the socket shown in fig. 4.

Wherein:

100-a base;

110-a jack;

120-protective door positioning plate;

200-a control clip;

210-a drive bayonet; 211-a limit clip;

220-a resilient arm;

300-a protective gate;

310-protective half-door; 311-a drive block;

320-an extension arm; 321-a limiting structure;

322-a first sub-arm; 323-second sub-arm;

330-a reset mechanism;

400-bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the shutter mechanism of the receptacle according to the present invention will be described in further detail below by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

As shown in fig. 1 to 3, a protective door mechanism of a socket according to an embodiment of the present invention includes a base 100, a control clip 200, and a protective door 300, wherein the base 100 is provided with a jack 110 for a plug pin 400 to pass through;

the protective door 300 comprises two protective half doors 310 arranged oppositely, wherein the two protective half doors 310 can move relatively and have a first position covering the jack 110;

the control clip 200 is provided on the base 100 for restricting the relative movement of the two protection half-doors 310; when the plug pin 400 passes through the control clip 200, the control clip 200 releases the restriction of the two protection half doors 310, so that the two protection half doors 310 can be moved relatively away from the first position at the same time by the push of the plug pin 400.

The shape of the base 100 may be various, such as rectangular, oval, polygonal, etc. The base 100 serves as a structural basis of the entire socket protective door mechanism, and includes at least a movement space for receiving the protective door 300 and the control clip 200, and the insertion hole 110 for passing the plug pin 400.

The protection door 300 includes two protection half doors 310 disposed opposite to each other, and the two protection half doors 310 can move relatively to approach or separate from each other, in this embodiment, the base 100 is substantially rectangular, the two protection half doors 310 are disposed opposite to each other along the length direction of the base 100, and when the two protection half doors 310 are separated from each other to a fixed position, the two protection half doors are located at a first position covering the insertion hole 110, which is a position where the protection door 300 is not opened.

In specific operation, the plug pin 400 acts on the control clip 200 first, so that the control clip 200 releases the restriction of the two protection half doors 310, the plug pin 400 acts on the two protection half doors 310 next to enable the two protection half doors 310 to move relatively, the protection doors 300 leave the first position covering the jack 110, and finally the plug pin 400 is inserted into the socket through the jack 110 and is connected with the socket through an internal live part.

How the control clip 200 performs the restricting function of the protective door 300 will be further described below.

There are various ways to implement the limiting function of the control clip 200 on the protection door 300, and as an implementable way, the protection half-door 310 includes a driving block 311 and an extension arm 320, the driving block 311 is used to cover the jack 110;

one end of each extension arm 320 is connected with the driving block 311, and the two extension arms 320 are positioned between the two driving blocks 311; the control clip 200 is positioned on one side of the protective door 300 far away from the base 100, the control clip 200 is provided with driving bayonets 210 corresponding to the driving blocks 311, and each driving bayonet 210 is correspondingly provided with at least one limiting clip 211;

each extension arm 320 is provided with a limit structure 321 which is matched with the limit clips 211 on the two driving bayonets 210; when the plug pin 400 is inserted into the driving bayonet 210, the limit clip 211 is forced to be separated from the limit structure 321, so as to release the extension arm 320; the plug latch 400 continues to be inserted to push both drive blocks 311 simultaneously out of the first position covering the jack 110.

Wherein the extension arm 320 may be a single arm located on only one side of the driving block 311, or it may include two arms located on both sides of the driving block 311. Referring to fig. 2, as one practicable manner, each extension arm 320 includes a first sub-arm 322 and a second sub-arm 323; the first sub-arm 322 and the second sub-arm 323 are respectively positioned at two opposite sides of the driving block 311; the stopper structures 321 are disposed at both ends of the first sub-arm 322 and both ends of the second sub-arm 323.

Two ends of the control clip 200 are respectively provided with two elastic arms 220, and the ends of the two elastic arms 220 form a driving bayonet 210; the limit clip 211 is provided at the end of the elastic arm 220. That is, the control clip is formed with two driving bayonets 210, and the two driving bayonets 210 correspond to the two driving blocks 311, respectively.

Alternatively, the limiting structure 321 is a slot, and the limiting clip 211 is a clip column.

Referring to fig. 2 and 3, two sides of each of the two driving blocks 311 are respectively provided with a first sub-arm 322 and a second sub-arm 323, two ends of each first sub-arm 322 are respectively provided with a limiting structure 321 corresponding to the limiting clips 211 on the two driving bayonets 210, and two ends of each second sub-arm 323 are also respectively provided with a limiting structure 321 corresponding to the limiting clips 211 on the two driving bayonets 210. And when the two driving blocks 311 are located at the first position covering the insertion hole 110, the first sub-arm 322 and the second sub-arm 323 at two sides of one driving block 311 correspond to the first sub-arm 322 and the second sub-arm 323 at two sides of the other driving block 311, so that the limiting structures 321 on the sub-arms at two sides of the two driving blocks 311 also correspond to each other (for example, when the limiting structures 321 are slots, the slots on the sub-arms of one driving block 311 are through with the corresponding slots on the sub-arms of the other driving block 311, so that the corresponding clamping posts are simultaneously clamped in the two slots).

Thus, when the protective door 300 is not opened, the latching posts of the four elastic arms 220 of the control latch 200 are respectively latched in the latching slots of the four sub-arms of the protective door 300, so that the opening of the protective door 300 is restricted. Only when the plug pin 400 is inserted into the two driving bayonets 210, the four elastic arms 220 are deformed to force the bayonet to disengage from the bayonet slot, and the four sub-arms are released, i.e., the protection door 300 can be opened at this time.

The embodiment relies on the restriction effect of limit clip 211 to limit structure 321 to realize the protect function of shutter 300, and shutter 300 can only be opened when double-bolt 400 inserts, and when single-bolt inserts, shutter 300 does not open. Specifically, referring to fig. 4 to 7, when the double-plug pin 400 is inserted, the two plug pins 400 are respectively inserted into the two driving bayonets 210, and the limit clips 211 on the two driving bayonets 210 are respectively separated from the corresponding limit structures 321, so that the extension arms 320 are released, and the two driving blocks 311 can leave the first position covering the insertion holes 110, and the protective door 300 is opened. When the single pin is inserted, the limit clip 211 inserted into the driving bayonet 210 of the plug 400 is separated from the corresponding limit structure 321, but because the other driving bayonet 210 does not receive an external force, the limit clip 211 on the driving bayonet still limits the corresponding limit structure 321, and finally the two extension arms 320 cannot move, so that the two driving blocks 311 cannot leave the first position covering the jack 110, and the protection door 300 cannot be opened.

And the size of the driving bayonet 210 can be designed according to the size of the plug 400 according to actual needs, only the plug 400 with a certain size can act on the driving bayonet 210 when being inserted, and small-sized foreign matters cannot act on the driving bayonet 210 when being inserted, and the protection door 300 cannot be opened, so that the problem of false operation caused by the insertion of the foreign matters is avoided, and the dangerous situation of electric shock caused by the insertion of other foreign matters can be effectively avoided.

Further, as an implementable manner, the first sub-arm 322 and the second sub-arm 323 of each extension arm 320 are arranged in a staggered manner, and the first sub-arm 322 of one extension arm 320 corresponds to the second sub-arm 323 of the other extension arm 320. In this way, the sub-arms on the two sides of the two driving blocks 311 are in a mutual inserting relationship, and have a mutual interference effect, that is, the two driving blocks 311 cannot move relatively in a direction perpendicular to the base 100; meanwhile, the two extension arms 320 can be attached to each other, so that the structure is more compact.

Of course, in other embodiments, the first sub-arm 322 and the second sub-arm 323 may be disposed at the same height position of the driving block 311, rather than being disposed in a staggered manner. It can be understood that the two driving blocks 311 are relatively movably disposed, the first sub-arm 322 and the second sub-arm 323 of one driving block 311 are disposed at the same height with respect to the bottom of the driving block 311, and the first sub-arm 322 and the second sub-arm 323 of the other driving block 311 need to be disposed higher than the above height or lower than the above height to avoid interference with each other.

In other embodiments, whether or not the restriction of the protective door 300 by the control clip 200 is released may not be achieved by the elastic deformation of the elastic arm 220. For example, the two ends of the control clip 200 are respectively provided with two clip arms, the end portions of the two clip arms form the driving bayonet 210, the limiting clip 211 is of an elastic clip projection structure, the elastic clip projection is arranged at the end portion of the clip arm, and the limiting structure 321 can be a clip groove. When the latch 400 is inserted into the driving bayonet 210, the elastic engaging protrusion is pressed to be integrally contracted and separated from the engaging groove, so that whether the protection door 300 is restricted by the clip 200 can be controlled.

As an implementable manner, each drive block 311 has drive ramps, which are oppositely directed and facing away from each other. After the plug bolt 400 is inserted into the driving bayonet 210, the bolt 400 contacts the driving inclined plane, and the design of the driving inclined plane is beneficial to the bolt 400 to push the driving block 311 to move, so that the plug is inserted more smoothly, and the use hand feeling is good.

Further, a slide way for the plug latch 400 to slide is arranged on the driving inclined plane along the direction of the relative movement of the two driving blocks 311. Therefore, the bolt 400 slides along the slideway, so that the bolt cannot deviate and slide, and the stability is good.

As an implementation manner, a reset mechanism 330 is further disposed between the two driving blocks 311, and the reset mechanism 330 is used for resetting the two driving blocks 311 to the first position. Optionally, the return mechanism 330 is a spring.

Referring to fig. 2, as an implementation manner, the base 100 is oppositely provided with the protective door positioning plates 120, and the protective door 300 is disposed between the two protective door positioning plates 120; when the protective door 300 is located at the first position, the protective door 300 abuts against the protective door positioning plate 120. The protective door positioning plate 120 can define the displacement distance of the relative movement of the two protective half doors 310, ultimately determining the position when the protective door 300 is closed, which also contributes to a compact design of the structure.

Further, the base 100 may further be relatively provided with two protection door limiting plates, the protection door 300 is disposed between the two protection door limiting plates, and the two protection door limiting plates 130 are used to limit a width range of a moving path of the protection door 300, that is, to limit a displacement direction of the relative movement of the two protection half doors 310, so as to ensure stability and accuracy of the movement of the two protection half doors 310.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A protection door mechanism of a socket is characterized by comprising a base, a control clip and a protection door, wherein the base is provided with a jack through which a plug pin passes;

the protection door comprises two protection half doors which are oppositely arranged, the two protection half doors can move relatively and have first positions for covering the jacks;

the control clip is arranged on the base and used for limiting the relative movement of the two protective half doors; two ends of the control clip are respectively provided with two elastic arms, the elastic arms are provided with limiting clips, and the protective half door is provided with a limiting structure; when the plug is located at the first position, the end part of the elastic arm is overlapped with the projection of the jack in the plug and bolt inserting direction, and the limiting clamp is clamped with the limiting structure to form a stop;

when the plug bolt acts on the control clip, the plug bolt pushes the elastic arm, so that the elastic arm generates elastic deformation to drive the limiting clip to be separated from the limiting structure, the limitation on the two protection half doors is removed, and the two protection half doors can move relatively under the pushing of the plug bolt and leave the first position simultaneously.

2. The protective door mechanism of a jack according to claim 1, wherein said protective half-door includes a driving block and an extension arm, said driving block for covering said jack;

one end of each extension arm is connected with the corresponding driving block, and the two extension arms are located between the two driving blocks; the control clip is positioned on one side of the protective door, which is far away from the base, the control clip is provided with driving bayonets corresponding to the driving blocks, and each driving bayonet is correspondingly provided with at least one limiting clip;

each extension arm is provided with a limiting structure matched with the limiting clips on the two driving bayonets; when the plug bolt is inserted into the driving bayonet, the limiting clamp is forced to be separated from the limiting structure so as to release the extension arm; the plug bolt continues to be inserted to push the two driving blocks simultaneously to leave the first position covering the jack.

3. The shutter mechanism of claim 2 wherein the tips of the two resilient arms form the drive bayonet; the limiting clamp is arranged at the end part of the elastic arm;

each of the extension arms comprises a first sub-arm and a second sub-arm; the first sub-arm and the second sub-arm are respectively positioned at two opposite sides of the driving block; the limiting structures are arranged at two ends of the first sub-arm and two ends of the second sub-arm.

4. The protective door mechanism for a receptacle according to claim 3, wherein said first and second sub-arms of each of said extension arms are offset, the first sub-arm of one of said extension arms corresponding to the second sub-arm of the other of said extension arms.

5. The protective door mechanism of a socket according to claim 3, wherein the limiting structure is a clamping groove, and the limiting clip is a clamping column.

6. The shutter mechanism of claim 2 wherein each of the drive blocks has drive ramps that face in opposite directions and away from each other.

7. The protective door mechanism of a socket according to claim 6, wherein a slide way for sliding the plug pin is arranged on the driving inclined plane in a penetrating way along the direction of relative movement of the two driving blocks.

8. The shutter mechanism of claim 2, wherein a reset mechanism is further disposed between the two drive blocks for resetting the two drive blocks to the first position.

9. The protective door mechanism for a socket of claim 8, wherein the return mechanism is a spring.

10. The protective door mechanism of the socket according to claim 1, wherein a protective door positioning plate is oppositely arranged on the base, and the protective door is arranged between the two protective door positioning plates; when the protective door is located at the first position, the protective door is abutted to the protective door positioning plate.