Plug bush and socket
By employing a snap-fit design with connectors, inserts, and flexible tongues, the problems of cumbersome socket assembly and low conductivity efficiency are solved, enabling efficient socket production and electrically safe sockets.
Patent Information
- Application Number
- CN202520289585.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
The current-carrying area of existing sockets is reduced after the addition of elastic tongues, resulting in increased resistance, decreased conductivity, more assembly parts, and complicated assembly procedures.
The design employs connectors, inserts, and flexible tongues to fix the inserts to the base via snap-fit, reducing the number of parts, improving assembly efficiency, and maintaining the current-carrying area without slots to avoid increasing resistance.
This technology enables efficient assembly of sockets, improves conductivity, reduces production costs, and meets electrical safety requirements.
Smart Images
Figure CN223743960U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrical equipment technical field, specifically, relate to a plug cover and socket. BACKGROUND
[0002] The socket provided by the prior art generally comprises a base, a plug cover and a bottom cover, the plug cover is assembled to the base, and the plug cover is fixed on the base through the bottom cover assembled to the base; this assembly mode has many parts and complicated assembly procedures, and it is difficult to improve the assembly efficiency. In order to reduce the parts of the socket and simplify the assembly of the socket, the prior art sets an elastic tongue on the plug cover, so as to fix the plug cover on the base through the clamping cooperation between the elastic tongue and the base.
[0003] However, the current-carrying area of the plug cover corresponding to the position of the elastic tongue is reduced, the resistance is increased, and thus the conduction efficiency is reduced. SUMMARY
[0004] The utility model discloses a plug cover and socket, the plug cover can be used for socket, and the plug cover can improve the problem that the current-carrying area is reduced and the resistance is increased due to the setting of the elastic tongue, and then improve the problem of the reduction of conduction efficiency.
[0005] The embodiment of the utility model can be realized as follows:
[0006] In a first aspect, the utility model provides a plug cover for assembling to the base of a socket, and the plug cover comprises:
[0007] A connecting piece,
[0008] Two plug cover members connected to two ends of the connecting piece;
[0009] A connecting end connected with the plug cover member, and the connecting end is used for connecting a conductive wire; and
[0010] An elastic tongue connected with the connecting piece, and the elastic tongue is used for clamping with the base.
[0011] In an optional embodiment, the two plug cover members are connected at an angle with the connecting piece, and the connecting piece and the two plug cover members jointly enclose a cavity; the elastic tongue extends to a side away from the cavity.
[0012] In an optional embodiment, the connecting piece comprises a first side edge, a second side edge and a third side edge connected in sequence, the two plug cover members are connected with the first side edge and the third side edge respectively, and the elastic tongue is connected with the second side edge.
[0013] In an optional embodiment, the elastic tongue is connected at an angle with the connecting piece, and the angle between the elastic tongue and the connecting piece is an obtuse angle.
[0014] In an optional embodiment, the plug sleeve connected with the connecting end has a first side facing the cavity and a second side facing away from the cavity, and the connecting end and the elastic tongue are both distributed on the first side.
[0015] In an optional embodiment, the plug sleeve connected with the connecting end has a first side facing the cavity and a second side facing away from the cavity, and the elastic tongue is distributed on the first side and the connecting end is distributed on the second side.
[0016] In an optional embodiment, the plug sleeve connected with the connecting end has a first side facing the cavity and a second side facing away from the cavity, and the elastic tongue is distributed on the first side and the connecting end is distributed on the second side.
[0017] In an optional embodiment, the hole wall of the plug-in hole is further provided with a sliding groove, the sliding groove and the insertion groove are distributed at intervals, the elastic tongue can be slidingly matched with the sliding groove, and the elastic tongue is guided to be slidingly matched with the insertion groove.
[0018] In an optional embodiment, the plug-in hole is provided with a supporting rib, and the side of the connecting piece away from the elastic tongue abuts against the supporting rib.
[0019] In an optional embodiment, the plug-in hole is provided with a first limiting rib and a second limiting rib, the plug sleeve is matched with the first limiting rib to limit the freedom of the plug sleeve in a first direction, the plug sleeve is matched with the second limiting rib to limit the freedom of the plug sleeve in a second direction, and the first direction and the second direction form an included angle.
[0020] In an optional embodiment, the plug socket comprises three plug sleeves, the three plug sleeves are respectively an L-pole plug sleeve, an N-pole plug sleeve and an E-pole plug sleeve, the base is provided with three plug-in holes, and the three plug-in holes are distributed in a triangular manner; the L-pole plug sleeve, the N-pole plug sleeve and the E-pole plug sleeve are respectively plugged into the three plug-in holes, and the E-pole plug sleeve is distributed between the L-pole plug sleeve and the N-pole plug sleeve; wherein,
[0021] The connecting end and the elastic tongue of the E-pole plug sleeve are both distributed on the side of the plug sleeve connected with the connecting end facing the other plug sleeve;
[0022] The connecting end and the elastic tongue of the L-pole plug sleeve are respectively distributed on the opposite sides of the plug sleeve connected with the connecting end, and the elastic tongue of the L-pole plug sleeve is distributed on the side of the plug sleeve connected with the connecting end facing the other plug sleeve;
[0023] The connecting end and the elastic tongue of the N-pole plug sleeve are respectively distributed on the opposite sides of the plug sleeve connected with the connecting end, and the elastic tongue of the N-pole plug sleeve is distributed on the side of the plug sleeve connected with the connecting end facing the other plug sleeve.
[0024] The beneficial effects of the socket of the embodiment of the utility model include: the socket provided by the embodiment of the utility model includes a connecting piece and a socket piece connected to two ends of the connecting piece; the socket further includes an elastic tongue piece connected to the connecting piece, the elastic tongue piece is used for being clamped with a base assembled with the socket, so that the socket can be fixed on the base, the number of parts is reduced, and the assembly efficiency is improved. Moreover, the socket does not need to be slotted on the connecting piece or the socket piece to form the elastic tongue piece, the problem that the current-carrying area is reduced due to the slotting of the connecting piece and the socket piece can be improved, and then the problem that the resistance is increased and the conduction efficiency is reduced due to the reduction of the current-carrying area can be improved.
[0025] The socket of the embodiment of the utility model includes all the beneficial effects of the socket, for example: the number of additional parts used for fixing the socket on the base is reduced, the assembly efficiency of the socket is improved, and the problem that the current-carrying area is reduced and the resistance is increased due to the setting of the elastic tongue piece is improved, and then the problem that the conduction efficiency is reduced is improved. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the embodiment will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope. For ordinary skilled in the art, other related drawings can also be obtained according to these drawings without creative labor.
[0027] Figure 1 It is a structure schematic view of the socket in the embodiment of the utility model under the first visual angle.
[0028] Figure 2 It is a structure schematic view of the socket in the embodiment of the utility model under the second visual angle.
[0029] Figure 3 It is an exploded structure schematic view between the socket and one socket in the embodiment of the utility model.
[0030] Figure 4 It is a structure schematic view of the base in the embodiment of the utility model.
[0031] Figure 5 It is a structure schematic view of three sockets in the embodiment of the utility model.
[0032] Figure 6 It is a structure schematic view of one socket in the embodiment of the utility model.
[0033] Icon: 010 - socket; 100 - plug sleeve; 101 - cavity; 110 - connecting piece; 120 - plug sleeve; 121 - first side; 122 - second side; 123 - convex rib; 130 - connecting end; 131 - threading hole; 140 - elastic tongue; 200 - base; 210 - plug hole; 211 - plug slot; 212 - sliding slot; 213 - supporting rib; 214 - first limiting rib; 215 - second limiting rib; 220 - abutting piece. DETAILED DESCRIPTION
[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0036] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0037] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the present application when it is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0038] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0039] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0040] The socket provided by the related art generally comprises a base, a sleeve and a bottom cover, the sleeve is assembled to the base, and the sleeve is fixed on the base by the bottom cover assembled to the base; the assembling mode has many parts and complicated assembling procedures, and it is difficult to improve the assembling efficiency. In order to reduce the parts of the socket and simplify the assembling of the socket, the related art cuts and slots an elastic tongue piece on the sleeve to fix the sleeve on the base by the clamping cooperation between the elastic tongue piece and the base.
[0041] However, the current-carrying area of the sleeve corresponding to the position of the elastic tongue piece is reduced, the resistance is increased, and thus the conduction efficiency is reduced.
[0042] Please refer to Figure 1 The socket 010 provided by the embodiment can not only reduce the additional parts for fixing the sleeve 100 on the base 200 and improve the assembling efficiency of the socket 010, but also can improve the problems of the reduced current-carrying area and the increased resistance caused by the setting of the elastic tongue piece 140, and further improve the problem of the reduced conduction efficiency. Moreover, the L-pole sleeve, the N-pole sleeve and the E-pole sleeve of the socket 010 of the embodiment can be designed to have the same shape, so as to be manufactured by the same mold, which is beneficial to reduce the production cost and production difficulty. The socket 010 of the embodiment will be described in detail below in combination with the drawings.
[0043] Please refer to Figure 1 and Figure 2 The socket 010 of the embodiment comprises the base 200 and the sleeve 100, the base 200 is provided with the insertion hole 210, the sleeve 100 is inserted into the insertion hole 210 and clamped with the hole wall of the insertion hole 210. In this way, the sleeve 100 is fixed on the base 200 by the clamping cooperation, and the sleeve 100 does not need to be additionally fixed by the bottom cover, the parts are reduced, and the assembling efficiency of the socket 010 is improved.
[0044] Further, the socket 010 comprises three sleeves 100, the three sleeves 100 are respectively the L-pole sleeve, the N-pole sleeve and the E-pole sleeve, the base 200 is provided with three insertion holes 210, and the three insertion holes 210 are distributed in a triangle; the L-pole sleeve, the N-pole sleeve and the E-pole sleeve are respectively inserted into the three insertion holes 210, and the E-pole sleeve is distributed between the L-pole sleeve and the N-pole sleeve.
[0045] Please refer to Figure 2 and Figure 3In the embodiment, the bushing 100 comprises a connecting piece 110, an elastic tongue 140, a connecting end 130, and two bushing pieces 120 connected to two ends of the connecting piece 110; the connecting end 130 is connected to one of the two bushing pieces 120, and is used to connect a conductive wire; the elastic tongue 140 is connected to the connecting piece 110, and is used to be clamped with the base 200. Specifically, a hole wall of the insertion hole 210 is provided with a slot 211; the elastic tongue 140 is clamped with the slot 211 to prevent the bushing 100 from being pulled out of the insertion hole 210. Through the clamping of the elastic tongue 140 and the base 200, the bushing 100 can be fixed on the base 200, the number of parts is reduced, and the assembly efficiency is improved.
[0046] Further, the two bushing pieces 120 are connected to the connecting piece 110 at an angle, and the connecting piece 110 and the two bushing pieces 120 jointly enclose a cavity 101; the elastic tongue 140 extends to a side away from the cavity 101. Specifically, the elastic tongue 140 has one end connected to the connecting piece 110 and an end away from the connecting piece 110, wherein the end of the elastic tongue 140 away from the connecting piece 110 extends to the side away from the cavity 101 and abuts against a slot wall of the slot 211. In this way, the end of the elastic tongue 140 away from the connecting piece 110 can more reliably abut against the slot wall of the slot 211, thereby ensuring the reliability of the clamping of the elastic tongue 140 with the hole wall of the insertion hole 210 and more reliably preventing the bushing 100 from being pulled out of the insertion hole 210, i.e., improving the stability of the assembly of the bushing 100 with the base 200.
[0047] Alternatively, the connecting piece 110 comprises a first side, a second side, and a third side connected in sequence at an angle (the angle between adjacent two sides includes but is not limited to 90°, 85°, 93°), the two bushing pieces 120 are connected to the first side and the third side respectively, and the elastic tongue 140 is connected to the second side. In this way, the elastic tongue 140 is equivalent to being connected to an end of the connecting piece 110 distributed between the two bushing pieces 120, and therefore, it is not necessary to groove the connecting piece 110 or the bushing piece 120 to form the elastic tongue 140, which can improve the problem of the reduction of current-carrying area of the connecting piece 110 and the bushing piece 120 due to grooving, and further improve the problem of the increase of resistance and the reduction of conductive efficiency due to the reduction of current-carrying area.
[0048] Alternatively, the elastic tongue 140 is connected to the connecting piece 110 at an angle, and the angle between the elastic tongue 140 and the connecting piece 110 is an obtuse angle, and the angle between the two can be 170°, 160°, 150°, etc., which is not limited here.
[0049] Please refer to Figure 2 and Figure 4Optionally, the hole wall of the insertion hole 210 is further provided with a sliding groove 212, the sliding grooves 212 and the insertion grooves 211 are distributed at intervals, the elastic tongue 140 can be slidably matched with the sliding grooves 212 and is guided to be clamped with the insertion grooves 211. The provision of the sliding grooves 212 can improve the operability of the insertion of the insertion sleeve 100 into the insertion hole 210, and can also be used for the direction of the insertion of the insertion sleeve 100 into the insertion hole 210, that is, when the insertion sleeve 100 is assembled, the elastic tongue 140 needs to be opposite to the sliding groove 212, thereby playing a foolproof role.
[0050] Further, the end of the sliding groove 212 away from the insertion groove 211 has an opening, the elastic tongue 140 can be inserted into the sliding groove 212 from the opening and slide along the sliding groove 212. The provision of the opening ensures the operability of the sliding cooperation of the elastic tongue 140 and the sliding groove 212.
[0051] The three insertion sleeves 100 of the embodiment can have the same structure and shape when they are in the unfolded state, that is, the connecting piece 110, the elastic tongue 140, the connecting end 130 and the two insertion sleeve pieces 120 are all distributed on the same plane, and the structures of the three insertion sleeves 100 are not completely the same after being bent and formed, that is, the two insertion sleeve pieces 120 are bent relative to the connecting piece 110 to form the cavity 101. Figure 5 The insertion sleeve piece 120 connected with the connecting end 130 has a first side 121 distributed towards the cavity 101 and a second side 122 distributed away from the cavity 101, the connecting end 130 and the elastic tongue 140 of part of the insertion sleeve 100 are distributed on the first side 121, and the elastic tongue 140 of part of the insertion sleeve 100 is distributed on the first side 121, while the connecting end 130 is distributed on the second side 122.
[0052] It should be noted that the above-mentioned connecting end 130 and elastic tongue 140 are both distributed on the first side 121, which means that the connecting end 130 and the elastic tongue 140 are simultaneously distributed on the side of the insertion sleeve piece 120 towards the cavity 101, rather than that the connecting end 130 and the elastic tongue 140 are connected to the first side 121. Similarly, the elastic tongue 140 is distributed on the first side 121, while the connecting end 130 is distributed on the second side 122, which means that the elastic tongue 140 and the connecting end 130 are respectively located on the side of the insertion sleeve piece 120 towards the cavity 101 and the side of the insertion sleeve piece 120 away from the cavity 101, rather than that the elastic tongue 140 is connected to the first side 121, while the connecting end 130 is connected to the second side 122.
[0053] In order to meet the electrical clearance safety requirements between the connecting ends 130 of the three bushings 100, prevent the safety hidden trouble caused by the small electrical clearance value when the connecting ends 130 are connected (for example, welded) with the conductive wires, and effectively reduce the heat radiation between the connecting ends 130, please refer to Figure 2 and Figure 5 In the embodiment, the connecting ends 130 and the elastic tongues 140 of the E-pole bushing are distributed on the side of the bushing 120 connected with the connecting end 130 facing the other bushing 120, that is, the connecting ends 130 and the elastic tongues 140 of the E-pole bushing are distributed on the first side 121 of the bushing 120 connected with the connecting end 130; the connecting ends 130 and the elastic tongues 140 of the L-pole bushing are respectively distributed on the opposite sides of the bushing 120 connected with the connecting end 130, the elastic tongue 140 of the L-pole bushing is distributed on the side of the bushing 120 connected with the connecting end 130 facing the other bushing 120, that is, the elastic tongue 140 of the L-pole bushing is distributed on the first side 121 of the bushing 120 connected with the connecting end 130, and the connecting end 130 is distributed on the second side 122 of the corresponding bushing 120; the connecting ends 130 and the elastic tongues 140 of the N-pole bushing are respectively distributed on the opposite sides of the bushing 120 connected with the connecting end 130, the elastic tongue 140 of the N-pole bushing is distributed on the side of the bushing 120 connected with the connecting end 130 facing the other bushing 120, that is, the elastic tongue 140 of the N-pole bushing is distributed on the first side 121 of the bushing 120 connected with the connecting end 130, and the connecting end 130 is distributed on the second side 122 of the corresponding bushing 120. In this way, the connecting end 130 of the L-pole bushing and the connecting end 130 of the N-pole bushing can be protruded away from the E-pole bushing to increase the spacing between the connecting ends 130 of the above three bushings 100 to meet the electrical safety requirements.
[0054] Optionally, the bushing 100 is integrally formed, that is, the connecting piece 110, the bushing 120, the connecting end 130 and the elastic tongue 140 are integrally formed.
[0055] Optionally, please refer to Figure 5 The connecting end 130 is provided with a wire hole 131 for arranging the conductive wire, the distance between the center of the wire hole 131 of the L-pole bushing and the center of the wire hole 131 of the E-pole bushing is L1, the distance between the center of the wire hole 131 of the N-pole bushing and the center of the wire hole 131 of the E-pole bushing is L2, and the distance between the center of the wire hole 131 of the L-pole bushing and the center of the wire hole 131 of the N-pole bushing is L3; wherein L1:L3=1:1.8~2.2, L2:L3=1:1.8~2.2.
[0056] Further, L1 and L2 are at least 12 mm, and L3 is at least 24 mm.
[0057] Please refer to Figure 4 and Figure 6 In this embodiment, the support rib 213 is arranged in the plug hole 210, and the connecting piece 110 is in abutment with the support rib 213 away from the elastic tongue 140. Through the arrangement of the support rib 213, the elastic tongue 140 and the plug-in cooperation of the plug groove 211 can be cooperated to limit the position of the plug sleeve 100 in the direction of its insertion into the plug hole 210, that is, the shaking of the plug sleeve 100 in the direction of its insertion into the plug hole 210 can be reduced, and the stability of the plug sleeve 100 inserted into the plug hole 210 can be improved.
[0058] Further, the first limiting rib 214 and the second limiting rib 215 are arranged in the plug hole 210, the plug sleeve 120 cooperates with the first limiting rib 214 to limit the freedom of the plug sleeve 100 in the first direction, and the plug sleeve 120 cooperates with the second limiting rib 215 to limit the freedom of the plug sleeve 100 in the second direction. The first direction and the second direction are at an angle, and the first direction and the second direction are at an angle with the direction of the plug sleeve 100 inserted into the plug hole 210. In this way, the stability of the plug sleeve 100 inserted into the plug hole 210 can be further improved, and the shaking of the plug sleeve 100 in the plug hole 210 can be reduced.
[0059] Optionally, the first direction, the second direction, and the direction of the plug sleeve 100 inserted into the plug hole 210 are perpendicular to each other, so that the plug sleeve 100 can be limited in the X-axis, Y-axis, and Z-axis directions to improve the stability of the plug sleeve 100 assembled in the plug hole 210.
[0060] The number of the first limiting rib 214 and the second limiting rib 215 can be selected as needed; in this embodiment, four first limiting ribs 214 are connected to the hole wall of the plug hole 210, and every two of the four first limiting ribs 214 are distributed on the hole walls of the opposite two plug holes 210. The second side 122 of one of the plug sleeve 120 is in abutment with two of the first limiting ribs 214, and the second groove of the other plug sleeve 120 is in abutment with the other two first limiting ribs 214.
[0061] Of course, in other embodiments, the number of the first limiting rib 214 can also be one, two, three, etc., which is not limited here.
[0062] In other embodiments, only one of the plug sleeve 120 can be in abutment with the first limiting rib 214.
[0063] In this embodiment, two second limiting ribs 215 are connected to the hole wall of the plug hole 210, and the ends of the two plug sleeves 120 away from the connecting piece 110 are in abutment with the two second limiting ribs 215, respectively.
[0064] Of course, in other embodiments, the number of second limiting ribs 215 can also be one, two, three, etc., and is not specifically limited here.
[0065] In other embodiments, only one of the plug-in sleeves 120 can be in abutment with the second limiting rib 215.
[0066] Optionally, the end of the plug-in sleeve 120 away from the connecting piece 110 is connected with a protruding rib 123, and the protruding rib 123 is in abutment with the second limiting rib 215.
[0067] Optionally, the plug-in hole 210 includes a first hole wall, a second hole wall, a third hole wall and a fourth hole wall connected in sequence, the sliding groove 212 and the plug-in groove 211 are both arranged on the first hole wall, the second hole wall and the fourth hole wall are both connected with the first limiting rib 214, and the third hole wall is connected with the second limiting rib 215; the supporting rib 213 is connected to the first hole wall or the bottom wall of the plug-in hole 210.
[0068] Optionally, please refer to Figure 2 The base 200 is also connected with two abutment pieces 220; one of the abutment pieces 220 is distributed close to the plug-in hole 210 of the L-pole plug-in sleeve, and the other abutment piece 220 is distributed close to the plug-in hole 210 of the N-pole plug-in sleeve; the connecting end 130 of the L-pole plug-in sleeve and the connecting end 130 of the N-pole plug-in sleeve are respectively in abutment with the corresponding abutment pieces 220.
[0069] In summary, the plug-in sleeve 100 can be used in the socket 010, and the plug-in sleeve 100 can improve the problem of reduced current-carrying area and increased resistance caused by the arrangement of the elastic tongue 140, thereby improving the problem of reduced conductivity efficiency.
[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A socket for fitting to a base (200) of a socket, characterised in that, The sleeve includes: a connecting piece (110), two sleeve pieces (120) connected to two ends of the connecting piece (110); a connecting end (130) connected with the sleeve piece (120) and used for connecting a conductive wire; and a resilient tongue (140) connected with the connecting piece (110) and used for clamping with the base (200).
2. The insert sleeve of claim 1, wherein Both of the sleeve pieces (120) are connected with the connecting piece (110) at an angle, and the connecting piece (110) and the two sleeve pieces (120) jointly enclose a cavity (101); the resilient tongue (140) extends away from the cavity (101).
3. The bushing according to claim 1 or 2, characterized in that The connecting piece (110) includes a first side edge, a second side edge and a third side edge connected in sequence, the two sleeve pieces (120) are connected with the first side edge and the third side edge respectively, and the resilient tongue (140) is connected with the second side edge.
4. The insert sleeve of claim 2, wherein, The resilient tongue (140) is connected with the connecting piece (110) at an angle, and the angle between the resilient tongue (140) and the connecting piece (110) is an obtuse angle.
5. The bushing of claim 2, wherein, The sleeve piece (120) connected with the connecting end (130) has a first side (121) distributed towards the cavity (101) and a second side (122) distributed away from the cavity (101), and the connecting end (130) and the resilient tongue (140) are both distributed on the first side (121).
6. The insert sleeve of claim 2, wherein, The sleeve piece (120) connected with the connecting end (130) has a first side (121) distributed towards the cavity (101) and a second side (122) distributed away from the cavity (101), and the resilient tongue (140) is distributed on the first side (121) and the connecting end (130) is distributed on the second side (122).
7. A socket, characterized by The base (200) is provided with a clamping hole (210), a clamping groove (211) is arranged on the hole wall of the clamping hole (210), the sleeve is clamped in the clamping hole (210), and the resilient tongue (140) is clamped with the clamping groove (211) to prevent the sleeve from being pulled out of the clamping hole (210).
8. The socket of claim 7, wherein The hole wall of the clamping hole (210) is further provided with a sliding groove (212), the sliding groove (212) and the clamping groove (211) are distributed at intervals, the resilient tongue (140) can be slidingly matched with the sliding groove (212) and is guided to be clamped with the clamping groove (211) by sliding in the sliding groove (212).
9. The socket of claim 7, wherein, A supporting rib (213) is arranged in the clamping hole (210), and one side of the connecting piece (110) away from the resilient tongue (140) abuts against the supporting rib (213).
10. The socket of claim 7, wherein, The plug-in hole (210) is provided with a first limiting rib (214) and a second limiting rib (215), the plug sleeve (120) cooperates with the first limiting rib (214) to limit the freedom degree of the plug sleeve in the first direction; the plug sleeve (120) cooperates with the second limiting rib (215) to limit the freedom degree of the plug sleeve in the second direction; wherein the first direction and the second direction form an angle.
11. The socket of claim 7, wherein, The socket comprises three plug sleeves, which are L-pole plug sleeve, N-pole plug sleeve and E-pole plug sleeve respectively, the base (200) is provided with three plug-in holes (210), and the three plug-in holes (210) are distributed in a triangular shape; the L-pole plug sleeve, the N-pole plug sleeve and the E-pole plug sleeve are respectively plugged into the three plug-in holes (210), and the E-pole plug sleeve is distributed between the L-pole plug sleeve and the N-pole plug sleeve; wherein, The connecting end (130) and the elastic tongue (140) of the E-pole plug sleeve are both distributed on the side of the plug sleeve (120) connected with the connecting end (130) towards the other plug sleeve (120); The connecting end (130) and the elastic tongue (140) of the L-pole plug sleeve are respectively distributed on the opposite sides of the plug sleeve (120) connected with the connecting end (130), and the elastic tongue (140) of the L-pole plug sleeve is distributed on the side of the plug sleeve (120) connected with the connecting end (130) towards the other plug sleeve (120); The connecting end (130) and the elastic tongue (140) of the N-pole plug sleeve are respectively distributed on the opposite sides of the plug sleeve (120) connected with the connecting end (130), and the elastic tongue (140) of the N-pole plug sleeve is distributed on the side of the plug sleeve (120) connected with the connecting end (130) towards the other plug sleeve (120).