Misinsertion prevention structure of safety protection socket

Abstract

The utility model provides a mistaken insertion prevention structure of a safety protection socket, which comprises a socket shell, double jacks are arranged on a surface cover of the socket shell, a movable closing plate is arranged in the socket shell, the double jacks are elastically closed by the movable closing plate, and the movable closing plate is provided with an elastic reset mechanism for promoting the movable closing plate to keep a state of closing the double jacks. The movable closing plate is provided with at least one middle through hole, the bottom of the movable closing plate is provided with a movable plate inclined plane, and the inner bottom of the socket shell is provided with a shell bottom inclined plane corresponding to the movable plate inclined plane. When the double insertion rods of the plug are inserted into the double jacks in the surface cover, the double insertion rods apply pressure to the movable closing plate to promote the movable closing plate to move downwards and forwards along the angle of the bottom inclined surface of the shell, the movable closing plate after translation exposes two insertion positions aligned with the double jacks, and the two insertion positions at least comprise a middle through hole in the movable closing plate. When the single rod is inserted into one of the double insertion holes in the surface cover, the movable closing plate tilts and is clamped by the clamping mechanism, and in the state, the movable closing plate stops the single rod from being continuously inserted. The socket can effectively prevent mis-insertion with a simple and low-cost structure.

Description

Technical Field

[0001] The utility model relates to the field of safety protection conductive sockets, in particular to a structure for preventing mis-insertion of the safety protection sockets. Background Art

[0002] The utility model patent for a socket safety door protection device, which is authorized by the announcement number CN219393791U and the name of the announcement on July 21, 2023, is a socket safety door protection device, including a device body, a boss is arranged on the device body, a reinforcing plate is arranged on one side of the boss, the reinforcing plate and the boss are integrally formed, a limit baffle is arranged on one side of the device body, the limit baffle is a bending structure, wherein the protection plate 100 and the protection plate 200 are respectively provided with a reset spring, the protection plate 190 and the protection plate 2100 are slidingly arranged It is placed in the device body 10 and blocks or opens the first jack 70 and the second jack 80. A groove 110 is formed on the protection plate 1 90. An inclined plate 120 is arranged in the groove 110. A reset spring 130 is arranged between the protection plate 1 90 and the second spring groove 60. A reset spring 2 140 is arranged between the protection plate 2 100 and the first spring groove 50. An inclined plate 2 150 is arranged on the side of the protection plate 2 100 away from the boss 20. The inclined plate 1 120 and the inclined plate 2 150 block or open the first jack 70 and the second jack 8. The above structure enables the safety socket to unlock the two protection plates at the same time only when the double plug rods are inserted at the same time, so that the plug rods are inserted in place and conduct electricity, but when a single plug rod is inserted, no protection plate can be unlocked. However, the prior art needs to configure multiple reset springs, and the volume is relatively large due to the setting of multiple spring reset mechanisms, which is not conducive to the miniaturization of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a structure for preventing wrong insertion of a safety protection socket, which is relatively simple and efficient and is conducive to the miniaturization of the product.

[0004] To this end, the utility model provides a safety protection socket anti-misinsertion structure, which is characterized in that: it includes a socket shell, a surface cover of the socket shell is provided with double holes, a movable closing plate is arranged in the socket shell, the movable closing plate closes the double holes when not subjected to external force, the movable closing plate is configured with an elastic reset mechanism that prompts it to maintain the closed state of the double holes, the movable closing plate has at least one middle through hole, the bottom of the movable closing plate has a movable plate inclined surface, the inner bottom of the socket shell has a shell bottom inclined surface corresponding to the movable plate inclined surface, when the double insertion rods of the plug are inserted into the double holes on the surface cover, the double insertion rods apply pressure to the movable closing plate to prompt the movable closing plate to move downward and forward along the angle of the shell bottom inclined surface, the movable closing plate after translation exposes two insertion positions aligned with the double holes, the two insertion positions include at least one middle through hole on the movable closing plate, when the single rod is inserted into one of the double holes on the surface cover, the movable closing plate is tilted and is clamped in position by the clamping mechanism, in this state, the movable closing plate blocks the single rod from continuing to be inserted.

[0005] Preferably, the reset mechanism is a spring leaf, both sides of which are pre-tightened on the inner wall of the socket housing and the front end of the movable closing plate, and the front end of the movable closing plate is facing the direction in which the movable closing plate is pressed downward.

[0006] Preferably, the two insertion positions include a through hole provided on the movable closing plate and a clearance space formed on the rear side of the movable closing plate due to sliding, and the double insertion rods are respectively inserted into the conductive state through the through hole and the clearance space formed on the front side of the movable closing plate.

[0007] Preferably, the locking mechanism includes a locking end of the middle through hole of the movable closing plate and a blocking portion in the socket shell that matches the locking end, the blocking portion including an upper locking portion on the lower side of the face cover and a lower locking portion on the lower part of the socket shell, when the double insertion rods of the plug are inserted into the jack at the same time, both sides of the movable closing plate are subjected to force and reach balance, the movable closing plate translates downward and forward, when a single rod is inserted into the jack on the front side, the front end of the movable closing plate is downwardly blocked on the lower locking portion, when the single rod is inserted into the jack on the rear side, the locking end of the middle through hole of the movable closing plate is tilted upward and blocked on the upper locking portion, the upper locking portion is a protrusion that matches the middle through hole of the movable closing plate and extends downward from the face cover, and when the movable closing plate is not subjected to external force, the protrusion is aligned with and partially enters the middle through hole at the front part of the movable closing plate.

[0008] Preferably, the locking mechanism includes a hook portion at the rear end of the movable closing plate and a hook groove in the socket shell that matches the rear end of the movable closing plate, the hook portion includes an upper hook portion and a lower hook portion, and the hook groove includes an upper hook groove at the lower side of the face cover and a lower hook groove at the lower part of the socket shell. When the double plug rods of the plug are inserted into the socket at the same time, both sides of the movable closing plate are subjected to force and reach balance, and the movable closing plate translates downward and forward. When a single rod is inserted into the socket on the front side, the upper hook portion of the movable closing plate is tilted and hooked in the upper hook groove. When the single rod is inserted into the socket on the rear side, the lower hook portion of the movable closing plate sinks and hooks in the lower hook groove.

[0009] The technical effect of the utility model is that in the structure for preventing wrong insertion of the safety protection socket proposed by the utility model, the movable closing plate adopts a spring to provide a reset force, and the movable closing plate relies on the inclined structure and the swing fulcrum between itself and the bottom of the shell, so that the movable closing plate can achieve force balance when the double plug rods are inserted, so that it can be translated downward until a channel or a clearance space for the double plug rods to pass is exposed, thereby realizing the insertion and conduction of the plug, on the contrary, when a single rod other than the plug is inserted, the force is uneven, causing one end of the movable closing plate to tilt up and be stuck or hooked, thereby preventing the movable closing plate from moving, and making it impossible for the single rod to continue to be inserted to reach the conductive position, thereby achieving safety protection. Because the movable closing plate and the shell of the present application have a higher degree of structural integration, they completely rely on their own structure to achieve locking and unlocking, so the structure is simpler, and the operation is more efficient, and because of its high degree of integration, it is conducive to the miniaturization of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In addition, in the drawings, the same components are marked with the same reference numerals, and the drawings are not drawn according to the actual scale.

[0011] Figure 1 This is a schematic cross-sectional view of the structure of the safety protection socket provided by the utility model, wherein the movable closing plate is provided with a spring;

[0012] Figure 2 for Figure 1 The safety protection socket in the state when accepting the double-prong plug;

[0013] Figure 3 for Figure 1 The rear side socket of the safety protection socket is tilted when the single plug is inserted. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0015] The so-called "front" and "rear" in the present invention refer to the right side as the front and the left side as the rear as shown in the drawings, wherein the right side is the direction in which the movable closing plate moves horizontally after being pushed down by the double plugs.

[0016] Reference Figure 1-3 As shown, the structure for preventing mis-insertion of the safety protection socket provided by Embodiment 1 of the utility model comprises a socket housing 1, a surface cover 11 of the socket housing 1 is provided with a double plug hole 111, a movable closing plate 12 is arranged in the socket housing 1, the movable closing plate 12 closes the double plug hole 111 when no external force is applied, the movable closing plate 12 is provided with an elastic reset mechanism for urging it to keep the double plug hole 111 closed, at least one middle through hole 121 is provided on the movable closing plate 12, the bottom of the movable closing plate 12 is provided with a movable plate inclined surface 122, and the inner bottom of the socket housing 1 is provided with a shell corresponding to the movable plate inclined surface 122 The bottom slope 13, when the double plug rod A of the plug is inserted into the double holes 111 on the face cover 11, the double plug rod A applies pressure to the movable closing plate 12 to cause the movable closing plate 12 to move downward and forward along the angle of the bottom slope 13 of the shell body. After the translation, the movable closing plate 12 exposes two insertion positions aligned with the double holes 111, and the two insertion positions include at least one middle through hole 121 on the movable closing plate. When the single rod B is inserted into one of the double holes 111 on the face cover 11, the movable closing plate 12 tilts up and is locked in position by the locking mechanism. In this state, the movable closing plate 12 blocks the single rod B from continuing to be inserted. The above-mentioned locking mechanism includes a locking end located at the middle through hole 121 of the movable closing plate 12 or a hook portion at the rear end of the movable closing plate 12, and also includes a hook groove located in the socket shell 1 and matching the rear end of the movable closing plate 12 or a shifting portion matching the front end of the movable closing plate 12. The movable closing plate 12 is at least in the initial position where it is not subjected to external force and is at the fulcrum portion on the upper side. The fulcrum portion is the obtuse end of the upper end of the movable plate inclined surface 122 at the bottom of the movable closing plate 12 and the bottom inclined surface 13 of the shell. In actual processing, an arc-shaped protrusion can be used here. When the two plug rods of the plug are inserted at the same time, both sides of the movable closing plate 12 are subjected to force and reach balance. The movable closing plate 12 moves downward and forward. When the single rod B is inserted into one of the double holes 111 on the face cover 11, both sides of the movable closing plate 12 are tilted because only one side is subjected to force.

[0017] Reference Figure 1-2 As shown, the reset mechanism is a spring 13, and the two sides of the spring 113 are pre-tightened on the inner wall of the socket housing 1 and the front end of the movable closing plate 12, and the front end of the movable closing plate 12 faces the direction in which the movable closing plate 12 is pressed down. The two insertion positions include the middle through hole 121 set on the movable closing plate 12 and the clearance space formed by the sliding of the rear side of the movable closing plate 12, and the double insertion rod A is inserted into the conductive through the middle through hole 121 and the clearance space formed by the front side of the movable closing plate 12.

[0018] Reference Figure 1-3 As shown, the locking mechanism includes a locking end 1211 of the middle through hole 121 of the movable closing plate 12 and a stopper portion in the socket housing 1 that matches the locking end 1211, and the stopper portion includes an upper locking portion 112 at the lower side of the face cover 1 and a lower locking portion 14 at the lower part of the socket housing 1. When the double insertion rods A of the plug are inserted into the jack 111 at the same time, both sides of the movable closing plate 12 are subjected to force and reach balance. The movable closing plate 12 moves downward and forward, and the single rod B is inserted into the jack 111 at the front side. The front end of the movable closing plate 12 is clamped downward on the lower clamping portion 14, and when the single rod B is inserted into the insertion hole 111 on the rear side, the clamping end 1211 of the middle through hole 121 of the movable closing plate 12 is tilted upward and clamped on the upper clamping portion 112. The upper clamping portion 112 is a protrusion that matches the middle through hole 121 of the movable closing plate 12 and extends downward from the face cover 11. When the movable closing plate 12 is not subjected to external force, the protrusion is aligned with and partially enters the insertion hole 111 at the front of the movable closing plate 12.

[0019] Reference Figure 1-3 As shown, Example 2 of the utility model is basically the same as Example 1, and the only difference lies in the change of the locking mechanism. The locking mechanism in Example 2 includes a hook portion at the rear end of the movable closing plate and a hook groove in the socket shell 1 that matches the rear end of the movable closing plate 12, the hook portion includes an upper hook portion and a lower hook portion, and the hook groove includes an upper hook groove on the lower side of the face cover and a lower hook groove on the lower part of the socket shell. When the double plug rods A of the plug are inserted into the socket 111 at the same time, both sides of the movable closing plate 12 are subjected to force and reach balance, and the movable closing plate 12 translates downward and forward, and when the single rod B is inserted into the socket 111 on the front side, the upper hook portion of the movable closing plate 12 is tilted and hooked in the upper hook groove, and when the single rod B is inserted into the socket 111 on the rear side, the lower hook portion of the movable closing plate 12 sinks and hooks at the lower hook groove.

[0020] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A structure for preventing mis-insertion of a safety protection socket, characterized in that: The socket shell comprises a socket shell, a face cover of the socket shell is provided with a double socket, a movable closing plate is arranged in the socket shell, the movable closing plate closes the double socket when no external force is applied, the movable closing plate is provided with an elastic reset mechanism which prompts it to maintain the closed state of the double socket, the movable closing plate has at least one middle through hole, the bottom of the movable closing plate has a movable plate inclined surface, the inner bottom of the socket shell has a shell bottom inclined surface corresponding to the movable plate inclined surface, when the double insertion rods of the plug are inserted into the double sockets on the face cover, the double insertion rods exert pressure on the movable closing plate to prompt the movable closing plate to translate downward and forward along the angle of the shell bottom inclined surface, the movable closing plate after translation exposes two insertion positions aligned with the double sockets, the two insertion positions include at least one middle through hole on the movable closing plate, when a single rod is inserted into one of the double sockets on the face cover, the movable closing plate tilts up and is clamped in position by the locking mechanism, in this state, the movable closing plate blocks the single rod from continuing to be inserted.

2. The structure for preventing wrong insertion of the safety protection socket according to claim 1 is characterized in that: The reset mechanism is a spring leaf, both sides of which are pre-tightened on the inner wall of the socket housing and the front end of the movable closing plate, and the front end of the movable closing plate faces the direction in which the movable closing plate is pressed downward.

3. The structure for preventing wrong insertion of the safety protection socket according to claim 1 or 2, characterized in that: The two insertion positions include a through hole set on the movable closing plate and a clearance space formed by sliding on the rear side of the movable closing plate, and the double insertion rods are respectively inserted into the conductive state through the through hole and the clearance space formed on the front side of the movable closing plate.

4. The structure for preventing wrong insertion of the safety protection socket according to claim 1 or 2, characterized in that: The locking mechanism includes a locking end of the middle through hole of the movable closing plate and a blocking part in the socket shell that matches the locking end, the blocking part includes an upper locking part on the lower side of the face cover and a lower locking part on the lower part of the socket shell, when the double insertion rods of the plug are inserted into the jack at the same time, both sides of the movable closing plate are subjected to force and reach balance, the movable closing plate translates downward and forward, when a single rod is inserted into the jack on the front side, the front end of the movable closing plate is downwardly blocked on the lower locking part, when the single rod is inserted into the jack on the rear side, the locking end of the middle through hole of the movable closing plate is tilted upward and blocked on the upper locking part, the upper locking part is a protrusion that matches the middle through hole of the movable closing plate and extends downward from the face cover, and when the movable closing plate is not subjected to external force, the protrusion is aligned with and partially enters the middle through hole at the front part of the movable closing plate.

5. The structure for preventing wrong insertion of the safety protection socket according to claim 3 is characterized in that: The locking mechanism includes a locking end of the middle through hole of the movable closing plate and a blocking part in the socket shell that matches the locking end, the blocking part includes an upper locking part on the lower side of the face cover and a lower locking part on the lower part of the socket shell, when the double insertion rods of the plug are inserted into the jack at the same time, both sides of the movable closing plate are subjected to force and reach balance, the movable closing plate translates downward and forward, when a single rod is inserted into the jack on the front side, the front end of the movable closing plate is downwardly blocked on the lower locking part, when the single rod is inserted into the jack on the rear side, the locking end of the middle through hole of the movable closing plate is tilted upward and blocked on the upper locking part, the upper locking part is a protrusion that matches the middle through hole of the movable closing plate and extends downward from the face cover, and when the movable closing plate is not subjected to external force, the protrusion is aligned with and partially enters the middle through hole at the front part of the movable closing plate.

6. The structure for preventing wrong insertion of the safety protection socket according to claim 1 or 2, characterized in that: The locking mechanism includes a hook portion at the rear end of the movable closing plate and a hook groove in the socket shell that matches the rear end of the movable closing plate, the hook portion includes an upper hook portion and a lower hook portion, when the double insertion rods of the plug are inserted into the jack at the same time, both sides of the movable closing plate are subjected to force and reach balance, the movable closing plate moves downward and forward, the hook groove includes an upper hook groove on the lower side of the face cover and a lower hook groove on the lower part of the socket shell, when a single rod is inserted into the jack on the front side, the upper hook portion of the movable closing plate is tilted up and hooked in the upper hook groove, and when the single rod is inserted into the jack on the rear side, the lower hook portion of the movable closing plate sinks and hooks in the lower hook groove.

7. The structure for preventing wrong insertion of the safety protection socket according to claim 3 is characterized in that: The locking mechanism includes a hook portion at the rear end of the movable closing plate and a hook groove in the socket shell that matches the rear end of the movable closing plate, the hook portion includes an upper hook portion and a lower hook portion, when the double insertion rods of the plug are inserted into the jack at the same time, both sides of the movable closing plate are subjected to force and reach balance, the movable closing plate moves downward and forward, the hook groove includes an upper hook groove on the lower side of the face cover and a lower hook groove on the lower part of the socket shell, when a single rod is inserted into the jack on the front side, the upper hook portion of the movable closing plate is tilted up and hooked in the upper hook groove, and when the single rod is inserted into the jack on the rear side, the lower hook portion of the movable closing plate sinks and hooks in the lower hook groove.

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