Protective door for preventing single-side misplug, protective mechanism and connecting device

Abstract

The utility model relates to the technical field of connecting devices, in particular to a protective door capable of preventing single-side misplug, a protective mechanism and a connecting device.The protective door capable of preventing single-side misplug is connected with a reset piece, a supporting face is formed at the bottom of the protective door, and the area of the supporting face is smaller than that of the upper surface of a main body; due to the fact that stress on the two sides of the supporting face is not uniform, the protective door swings and does not slide, and at the moment, the inserting path of the plug is still closed. Only when the two pins of the plug are inserted at the same time, the protective door can be driven to slide to unlock the insertion path, so that the problem of electric shock caused by misplug of a single side into the connecting device is effectively avoided, and the safety and reliability are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of connection device technology, and in particular to a protective door, protective mechanism and connecting device for preventing misinsertion on one side. Background Technology

[0002] To enhance safety, connecting devices are typically equipped with protective door structures. These protective door structures ensure that the sockets on the connecting devices remain normally closed to the outside environment, effectively reducing the risk of accidents caused by accidental insertion by users.

[0003] For example, patent CN201921322123.1, "Safety Door Structure and Connecting Device for Connecting Device," discloses a guide mechanism formed between the protective component and the base in at least two directions. At least two guide mechanisms can jointly guide the movement of the protective component, improving its stability and preventing jamming. Although the protective component in this patent can normally close the connector's sockets, if a sharp object is inserted into any socket, it will cause the protective component blocking that socket to slide relative to the base. This will open the remaining sockets in the same group blocked by the same protective component, posing a risk of accidental insertion into these sockets. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a protective door to prevent misinsertion on one side, comprising a main body, wherein a reset member is connected to the main body, and at least two second insertion holes corresponding to two-prong plugs and / or three-prong plugs are provided on the main body, wherein an inclined driving part is provided on at least one side of the second insertion hole along its length direction, and a support surface is formed at the bottom of the main body, wherein the area of ​​the support surface is smaller than the area of ​​the upper surface of the main body, and the inclined driving parts of the two insertion holes are provided on both sides of the support surface.

[0005] In some possible embodiments, the body has a boat-shaped cross-section along the length direction perpendicular to the second socket.

[0006] In some possible embodiments, the bottom of the support surface is a plane.

[0007] In some possible embodiments, the main body is provided with a receiving groove, there are two reset members, both of which are accommodated in the receiving groove, both ends of the receiving groove are provided with a post, one end of the two reset members is correspondingly installed on the two posts, and the other end of the two reset members is fixedly connected to the housing or support plate.

[0008] This utility model also provides a protective mechanism, which includes a protective door as described in the above embodiment, and a support plate. The support plate is provided with a protective compartment for accommodating the protective door. The protective door can swing within the protective compartment or slide along a direction perpendicular to the length of the second insertion hole. The support plate is provided with a third insertion hole corresponding to the second insertion hole. Under normal conditions, the protective door is pressed by the reset member and slides to cover the third insertion hole.

[0009] In some possible embodiments, two limiting protrusions are formed on the support plate, and the height of the two limiting protrusions is less than the overhang height of the inclined drive portion on the outer side of the second socket.

[0010] This utility model also provides a connection device, which includes a protective mechanism as described in the above embodiment, and further includes a housing and a compartment disposed within the housing. The housing is provided with a first insertion hole, and the compartment is provided with a fourth insertion hole. A wiring terminal corresponding to the fourth insertion hole is disposed within the compartment. A support plate is installed between the compartment and the housing, and the area between the support plate and the housing forms the protective compartment.

[0011] In some possible embodiments, the housing is provided with a mounting post, the end of the mounting post facing the support plate is placed in the receiving groove, and the end of the mounting post placed in the receiving groove is provided with limit posts on both sides along the length direction of the receiving groove, and the two limit posts are respectively connected to the opposite ends of the two reset members.

[0012] In some possible embodiments, the support plate is provided with buckles on both opposite sides, and the outer walls of the opposite sides of the insertion compartment are provided with slots that cooperate with the buckles.

[0013] In some possible embodiments, the housing is provided with a sealing ring groove for engaging with the open end of the support plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model's protective door for preventing accidental insertion on one side is connected to a reset component, which forms a support surface at the bottom. The area of ​​the support surface is smaller than the area of ​​the upper surface of the main body. When the protective door is pressed on one side, due to the uneven force on both sides of the support surface, the protective door will swing instead of sliding, and it will still block the insertion path of the plug. Only when both prongs of the plug are inserted at the same time can the protective door be driven to slide to unlock the insertion path. This design effectively avoids the problem of electric shock caused by accidental insertion on one side into the connecting device, and greatly improves safety and reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the protective door provided in an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the protective mechanism provided in an embodiment of the present utility model;

[0019] Figure 3 A cross-sectional structural diagram of the protective mechanism and the insert portion provided for an embodiment of this utility model;

[0020] Figure 4 A three-dimensional structural schematic diagram of the connecting device provided in an embodiment of this utility model;

[0021] Figure 5 An exploded view of the connecting device provided in an embodiment of this utility model.

[0022] Figure label:

[0023] 10 housing, 11 first insertion hole, 12 mounting post, 13 limiting post, 14 sealing ring groove;

[0024] Insertion compartment 20, fourth insertion hole 21, wiring terminal 22, card slot 23;

[0025] Protective mechanism 30, support plate 31, limiting protrusion 311, main body 32, support surface 321, protective chamber 33, third insertion hole 34, reset component 35, tilting drive part 36, receiving groove 37, second insertion hole 38, insertion post 39, buckle 3a. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0027] Reference Figure 1 The protective door for preventing misinsertion on one side includes a main body 32, on which a reset member 35 is connected. The reset member 35 can be a conventional compression spring. The main body 32 can be driven by an external force to move along the axial direction of the reset member 35 on a horizontal plane. After the external force is removed, it moves and resets under the restoring force of the reset member 35. The main body 32 is also provided with at least two second sockets 38 corresponding to two-prong plugs and / or three-prong plugs. This embodiment takes a five-hole connector adapted to the new national standard as an example for explanation. That is, the second sockets 38 provided on the main body 32 can satisfy both two-prong plug insertion and three-prong plug insertion. The second socket 38 has an inclined drive part 36 on at least one side along its length. When the plug is inserted, it presses against the inclined drive part 36 and forces the protective door to slide to make way for the plug, allowing the plug to be inserted smoothly. The bottom of the main body 32 has a support surface 321. The area of ​​the support surface 321 is smaller than the area of ​​the upper surface of the main body 32, so that the main body 32 has a seesaw structure with both ends suspended in the horizontal plane. The inclined drive parts 36 of the two sockets are respectively located on both sides of the support surface 321. When a single hard object is inserted and presses against one of the inclined drive parts 36, the main body 32 will swing, that is, the side of the main body 32 that is pressed will sink and the other side will tilt up, but the main body 32 cannot slide, thereby ensuring that a single hard object cannot be inserted and avoiding the risk of electric shock.

[0028] In some possible embodiments, refer to Figure 1 and Figure 3 As shown, the body 32 has a boat-shaped cross section along the length direction perpendicular to the second insertion hole 38. In addition to ensuring normal swinging, this structure can also reduce the contact area between the support surface 321 and the horizontal surface, thereby reducing the friction between the support surface 321 and the horizontal surface during normal insertion.

[0029] In some possible embodiments, refer to Figure 1 and Figure 3 As shown, the bottom of the support surface 321 is flat, which is intended to ensure that the protective door horizontally covers and blocks the second socket 38 to prevent shaking.

[0030] In some possible embodiments, refer to Figure 1 and Figure 2As shown, the main body 32 has a receiving groove 37, and there are two reset members 35, both of which are accommodated in the receiving groove 37. Each end of the receiving groove 37 has a post 39. One end of each reset member 35 is mounted on one of the two posts 39, and the other end of each reset member 35 is fixedly connected to the housing 10 or the support plate 31. When a two-prong plug is inserted, the two prongs simultaneously press against the two tilting drive parts 36, and the force components of the two tilting drive parts 36 in the axial direction of the reset member 35 are aligned, allowing the main body 32 to slide horizontally and make way for the prongs, enabling the prongs to be inserted for power. At this time, one reset member 35 is pressed, while the other reset member 35 is inactive. After the two-prong plug is removed, the protective door resets under the restoring force of the reset member 35 and re-covers and seals the second socket 38. When a three-prong plug is inserted, the other reset member 35 is pressed.

[0031] This utility model also provides a protective mechanism 30, as shown in the reference. Figure 2 and Figure 3 As shown, it includes a support plate 31 and a protective door as described in the above embodiment. The support plate 31 is provided with a protective chamber 33 that can accommodate the protective door. The protective door can slide and swing within the protective chamber 33. The support plate 31 has a third socket 34 corresponding to the second socket 38. The protective door is on the third socket 34. Under normal conditions, the protective door is pressed by the reset member 35 and slides to cover the third socket 34. When the plug is correctly inserted, the two prongs simultaneously press against the two inclined drive parts 36 on both sides of the support surface 321. The protective door is pressed evenly and slides within the protective chamber 33, allowing the plug to be inserted into the third socket 34 for power extraction. When a hard object is inserted from one side, the protective door is pressed unevenly, causing it to swing within the protective chamber 33 while still covering the third socket 34, thereby avoiding the risk of electric shock caused by the hard object passing through the third socket 34.

[0032] In some possible embodiments, refer to Figure 2 and Figure 3 As shown, two limiting protrusions 311 are formed on the support plate 31. The protrusion height of the two limiting protrusions 311 is less than the suspension height of the inclined drive portion 36 on the outer side of the second insertion hole 38. In this embodiment, the limiting protrusions 311 are used to prevent the protective door from sliding after being pressed and swaying. However, the protrusion height of the limiting protrusions 311 is small, so it will not prevent the protective door from sliding when it is balanced under pressure.

[0033] This utility model also provides a connecting device, see reference. Figure 4 and Figure 5As shown, it includes the protective mechanism 30 as described in the above embodiment, and also includes a housing 10 and a compartment 20 disposed within the housing 10. The housing 10 is provided with a first socket 11, and the compartment 20 is provided with a fourth socket 21. In this embodiment, the first socket 11, the second socket 38, the third socket 34, and the fourth socket 21 are arranged correspondingly from top to bottom. The compartment 20 is also provided with a terminal block 22 corresponding to the fourth socket 21. A support plate 31 is installed between the compartment 20 and the housing 10. A protective edge is provided around the periphery of the support plate 31, making the entire support plate 31 a disc-shaped structure, which, together with the housing 10, forms a protective chamber 33. The area between the support plate 31 and the housing 10 forms the protective chamber 33. The protective door is slidably and swingably disposed within the protective chamber 33, that is, the protective door is disposed between the first socket 11 and the third socket 34. When the plug is correctly inserted, it is inserted into the first socket 11 and presses against the tilting drive part 36 at the second socket 38. The two tilting drive parts 36 on opposite sides of the support surface 321 are pressed simultaneously to ensure that the protective door is pressed evenly. The protective door can slide in the protective chamber 33 and open the third socket 34. The plug then inserts into the fourth socket 21 from the third socket 34 and contacts the terminal 22 to draw power. When a hard object is inserted on one side, it will cause the protective door to swing due to uneven pressure. One end of the protective door presses down against the support plate 31, and the other end tilts up against the housing 10. At the same time, the tilting drive part 36 under pressure swings with the main body 32 to a near-horizontal position, thereby greatly reducing the horizontal component force provided to the protective door by the insertion of the hard object. This horizontal component force is not enough to overcome the friction between the protective door and the support plate 31. Therefore, the insertion of the hard object on one side cannot force the protective door to slide, and it cannot continue to be inserted and contact the terminal 22.

[0034] In some possible embodiments, refer to Figure 3 As shown, a mounting post 12 is provided on the housing 10. The end of the mounting post 12 facing the support plate 31 is placed in the receiving groove 37. Limiting posts 13 are provided on both sides of the end of the mounting post 12 placed in the receiving groove 37 along the length direction of the receiving groove 37. The two limiting posts 13 are respectively connected to the opposite ends of the two reset members 35, so that the reset members 35 can be forced to slide along their elastic deformation or reset direction after being pressed.

[0035] In some possible embodiments, refer to Figure 2 As shown, the support plate 31 has clips 3a on both opposite sides, and the outer walls of the compartment 20 on both opposite sides have slots 23 that mate with the clips 3a. The support plate 31 is fixedly connected to the compartment 20 by a snap-fit ​​method, which can improve the convenience of installation. There are two clips 3a on each side, and the number of slots 23 on the corresponding side is also adapted to the number of clips 3a. This structural design can increase the stability of installation.

[0036] In some possible embodiments, refer to Figure 3 As shown, to facilitate installation and ensure a tight seal, the housing 10 is provided with a sealing ring groove 14 for engaging with the open end of the support plate 31. The protective edge can be directly fitted into the sealing ring groove 14, and a seal is provided between the two.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A protective door to prevent accidental insertion from one side, characterized in that, Includes a main body (32), which is connected to a reset member (35). The main body (32) has at least two second sockets (38) corresponding to a two-prong plug and / or a three-prong plug. Each second socket (38) has a tilting drive part (36) on at least one side along its length. The bottom of the main body (32) has a support surface (321) with an area smaller than the area of ​​the upper surface of the main body (32). The tilting drive parts (36) of the two sockets are respectively located on both sides of the support surface (321).

2. The protective door according to claim 1, characterized in that, The body (32) has a boat-shaped cross section along the length direction perpendicular to the second insertion hole (38).

3. The protective door according to claim 1, characterized in that, The bottom of the support surface (321) is a plane.

4. The protective door according to claim 1, characterized in that, The main body (32) is provided with a receiving groove (37). There are two reset members (35) and both are accommodated in the receiving groove (37). Both ends of the receiving groove (37) are provided with inserts (39). One end of the two reset members (35) is installed on the two inserts (39) respectively. The other end of the two reset members (35) is fixedly connected to the housing (10) or the support plate (31).

5. A protective mechanism, characterized in that, The protective door, as described in any one of claims 1 to 4, further includes a support plate (31), on which a protective compartment (33) is provided to accommodate the protective door. The protective door is able to swing within the protective compartment (33) or slide along a direction perpendicular to the length of the second insertion hole (38). A third insertion hole (34) corresponding to the second insertion hole (38) is provided on the support plate (31). Under normal conditions, the protective door is pressed by the reset member (35) and slides to cover the third insertion hole (34).

6. The protective mechanism according to claim 5, characterized in that, Two limiting protrusions (311) are formed on the support plate (31), and the protrusion height of the two limiting protrusions (311) is less than the suspension height of the inclined drive part (36) on the outer side of the second insertion hole (38).

7. A connecting device, characterized in that, The protective mechanism (30) as described in claim 5 or 6 is further comprising a housing (10) and a jack (20) disposed within the housing (10). The housing (10) is provided with a first jack hole (11), and the jack (20) is provided with a fourth jack hole (21). A terminal block (22) corresponding to the fourth jack hole (21) is disposed within the jack (20). A support plate (31) is installed between the jack (20) and the housing (10), and the area between the support plate (31) and the housing (10) forms the protective chamber (33).

8. The connecting device according to claim 7, characterized in that, The housing (10) is provided with a mounting post (12). The end of the mounting post (12) facing the support plate (31) is placed in the receiving groove (37). The end of the mounting post (12) placed in the receiving groove (37) is provided with limit posts (13) on both sides along the length direction of the receiving groove (37). The two limit posts (13) are respectively connected to the opposite ends of the two reset members (35).

9. The connecting device according to claim 7, characterized in that, The support plate (31) is provided with buckles (3a) on both sides opposite to each other, and the outer walls of the insert (20) on both sides opposite to each other are provided with slots (23) that cooperate with the buckles (3a).

10. The connecting device according to claim 7, characterized in that, The housing (10) is provided with a sealing ring groove (14) for engaging with the open end of the support plate (31).

Images