Plugging terminal and household electrical appliance product

Abstract

The utility model provides a plugging terminal and a household electrical appliance product, and relates to the technical field of household electrical appliance products. The plug terminal comprises a plug and a socket. The plug is provided with a plurality of plug pins at intervals along a first direction. A plurality of socket needles are arranged on the socket at intervals in the first direction. The plug and the socket are plugged along a second direction, so that the plug pins and the socket pins are electrically connected in a one-to-one correspondence manner; the first direction is perpendicular to the second direction. One end of the plug close to the socket and / or one end of the socket close to the plug are / is provided with an insulating part along the plugging direction. And when the plug is plugged into the socket in the third direction, at most one plug needle can be electrically connected with the socket needle in a contact manner. The third direction and the second direction form an acute angle. Through the arrangement, the conditions of power supply burnout and the like caused by misplacement and misplug in the plugging process of the plug and the socket can be prevented, and the assembly reliability and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, and particularly relates to a plug-in terminal and a household electrical appliance. Background Art

[0002] The inventor has found through research that a plurality of pins are respectively arranged on the socket and the plug, and each pin is connected with a different signal line. Under normal circumstances, the pins on the socket and the plug are inserted in one-to-one correspondence, and after the socket and the plug are inserted, the signal lines are conducted and electrically connected to the circuit board. Since the functions or modules corresponding to each signal line are different, their connection voltages are also different. If the socket and the plug are misinserted, it may cause the connected circuit board to burn out due to the input voltage exceeding the range. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a plug-in terminal and a household electrical appliance, which can ensure the correct insertion of the socket and the plug and avoid the situation that the circuit board is burned out due to misconnection.

[0004] The embodiments of the utility model are implemented as follows:

[0005] In a first aspect, the utility model provides a plug-in terminal, which includes a socket and a plug inserted and matched with the socket;

[0006] A plurality of plug pins are arranged on the plug at intervals along a first direction;

[0007] A plurality of socket pins are arranged on the socket at intervals along the first direction;

[0008] The plug and the socket are inserted along a second direction, so that the plug pins and the socket pins are electrically connected in one-to-one correspondence; the first direction and the second direction are perpendicular;

[0009] An insulating part is arranged at one end of the plug close to the socket and / or one end of the socket close to the plug along the insertion direction. When the plug is inserted into the socket along the second direction, the socket pin first enters the insulating part of the plug and then contacts and is electrically connected to the plug pin, and / or, the plug pin first enters the insulating part of the socket and then contacts and is electrically connected to the socket pin;

[0010] When the socket is inserted into the plug in a third direction, at most only one plug pin can contact and be electrically connected to the socket pin; wherein the third direction forms an acute angle with the second direction.

[0011] In an optional embodiment, when the socket is inserted into the plug in the third direction, the socket pin is located in the insulating part of the plug and is spaced from the plug pin.

[0012] In an alternative embodiment, the width of the insulating portion of the plug in the first direction is L1; when the socket plugs the plug in the third direction, the first socket pin of the socket close to the end of the plug is denoted as point A, and the maximum distance between the inner leading edge of the end of the socket away from the first socket pin in the first direction and point A is L2, and L2 is less than L1; wherein, the inner leading edge is the inner edge of the end of the socket close to the plug.

[0013] In an alternative embodiment, when the socket plugs the plug in the third direction, the first socket pin contacts the outer sidewall of the plug, and the leading edge of the end of the socket away from the first socket pin in the first direction contacts the leading edge of the insulating portion of the plug;

[0014] In the plugging direction, there is a gap between the second socket pin and the first plug pin.

[0015] In an alternative embodiment, when the socket plugs the plug in the third direction, in the plugging direction, the first socket pin contacts the outer sidewall of the plug, the second socket pin of the socket contacts the first plug pin of the plug, and there is a gap between the third socket pin of the socket and the second plug pin of the plug.

[0016] In an alternative embodiment, the length of the insulating portion of the plug in the plugging direction is L3, the length of the plug pin is L4, and L3 is 0.1 times to 1.5 times of L4.

[0017] In an alternative embodiment, the length of the insulating portion of the plug in the plugging direction is L3, the width L1 of the insulating portion in the first direction is equal to the width of the plug in the first direction, and L3 is 10% to 30% of L1.

[0018] In an alternative embodiment, L3 is greater than or equal to 0.5 mm.

[0019] In an alternative embodiment, the plug is provided with mounting grooves, each plug pin is located in one mounting groove, and the distance between the side of the mounting groove close to the leading edge of the plug and the leading edge of the insulating portion is L3.

[0020] In an alternative embodiment, the length of the insulating portion of the socket in the plugging direction is L5, and L5 is 1.15 mm to 1.5 mm;

[0021] And / or, the length of the socket pin is L6, and L6 is 4 times to 6 times of L5.

[0022] In an alternative embodiment, the outer sidewall of the plug is provided with a buckle, and the buckle is used for clamping with the part to be installed.

[0023] In an alternative embodiment, when the socket and the plug are in a correctly inserted state, there is a gap between the leading edge of the socket and the buckle along the insertion direction.

[0024] In an alternative embodiment, the socket has an annular edge, and the socket pins are provided inside the annular edge; when the plug and the socket are in an inserted state, the annular edge is sleeved on the plug.

[0025] In a second aspect, the present utility model provides a household electrical appliance product, including the insertion terminal as described in any one of the foregoing embodiments.

[0026] The beneficial effects achieved by the present utility model include:

[0027] For the insertion terminal provided in this application, an insulating portion is provided at the leading edge of the plug and / or the socket. If the plug pins and the socket pins are misaligned and obliquely inserted in the first direction, the insulating portion can isolate the contact between some of the socket pins and the plug pins, so that in the obliquely inserted state, at most only one plug pin can contact the socket pin. Such a setting can prevent situations such as power supply burnout caused by misalignment and incorrect insertion during the insertion process of the plug and the socket, and improve the assembly reliability and safety.

[0028] The household electrical appliance product provided in this application includes the above-mentioned insertion terminal, which has an anti-fooling effect when the socket and the plug are connected, prevents the circuit board from being damaged due to an out-of-range input voltage after the socket pins and the plug pins are misconnected, and improves the assembly reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of an inserted state of an insertion terminal provided by an embodiment of the present utility model;

[0031] Figure 2 It is a schematic structural diagram of another perspective of an inserted state of an insertion terminal provided by an embodiment of the present utility model;

[0032] Figure 3 It is a schematic structural diagram of an inserted and disassembled structure of an insertion terminal provided by an embodiment of the present utility model;

[0033] Figure 4Structural schematic diagram of a misaligned insertion state of a plug-in terminal provided by an embodiment of the present invention;

[0034] Figure 5 Structural schematic diagram of a plug of a plug-in terminal provided by an embodiment of the present invention from one perspective;

[0035] Figure 6 Structural schematic diagram of a plug of a plug-in terminal provided by an embodiment of the present invention from another perspective;

[0036] Figure 7 Structural schematic diagram of a socket of a plug-in terminal provided by an embodiment of the present invention.

[0037] Reference numerals: 100 - plug-in terminal; 110 - plug; 111 - plug pin; 112 - insulating part; 113 - outer side wall; 114 - installation groove; 115 - buckle; 120 - socket; 121 - socket pin; 123 - annular rib. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] It should be noted that: similar reference numerals and letters indicate 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 subsequent drawings.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] Please refer to Figures 1 to 4, A plug-in terminal 100 provided in this embodiment includes a plug 110 and a socket 120 that is plugged and mated with the plug 110. A plurality of plug pins 111 are provided on the plug 110 at intervals along a first direction. A plurality of socket pins 121 are provided on the socket 120 at intervals along the first direction. The plug 110 and the socket 120 are plugged in along a second direction, so that the plug pins 111 and the socket pins 121 are electrically connected in one-to-one correspondence. The first direction and the second direction are perpendicular. An insulating portion 112 is provided at one end of the plug 110 close to the socket 120 and / or at one end of the socket 120 close to the plug 110 along the plugging direction. When the plug 110 is plugged into the socket 120 along the second direction, the socket pins 121 first enter the insulating portion of the plug 110 and then contact and are electrically connected to the plug pins 111, and / or, the plug pins 111 first enter the insulating portion of the socket 120 and then contact and are electrically connected to the socket pins 121. When the socket 120 plugs the plug 110 in a third direction, that is, the plug pins 111 and the socket pins 121 are misaligned and obliquely inserted in the first direction, at most only one of the plug pins 111 can contact and be electrically connected to the socket pins 121; wherein the third direction forms an acute angle with the second direction. This can play an anti-fooling role, thereby avoiding the situation that the circuit board is damaged due to the input voltage exceeding the range after the socket pins 121 and the plug pins 111 are misconnected, and improving the reliability and safety of the assembly.

[0045] It should be noted that the "electrical connection" in this embodiment means that both the socket pins and the plug pins are made of conductive materials and can be electrically conducted through contact. The insulating portion in this embodiment can be understood as the surface material of the plug end not being conductive; for example, it can be a cavity space similar to a cuboid near the plugging end of the plug.

[0046] Optionally, when the socket 120 plugs the plug 110 in a third direction, all the socket pins 121 are located in the insulating portion 112 of the plug 110 and are spaced from the plug pins 111.

[0047] Combined with Figure 5 and Figure 6 , optionally, the width of the insulating portion 112 of the plug 110 in the first direction is L1; the length of the insulating portion 112 in the plugging direction is L3. In this embodiment, the width of the plug 110 in the first direction is L1, that is, the width of the plug 110 is equal to the width of the insulating portion 112. The insulating portion 112 and the plug 110 can be integrally formed or separately connected. In this embodiment, the insulating portion 112 at the front end of the plug 110 and the plug 110 are integrally formed, which is convenient for manufacturing, has a reliable structure, and also saves the assembly of the insulating portion 112.

[0048] Optionally, the length of the plug pin 111 is L4, and L3 is 0.1 times to 1.5 times of L4. In this embodiment, L3 is approximately any value between 0.5 mm and 5.8 mm. In this way, while preventing misinsertion, the reliability and connection efficiency of the electrical connection between the plug pin 111 and the socket pin 121 are ensured, and the structure is compact and the overall volume is small.

[0049] Since the front end of the plug 110 is provided with an insulating portion 112. If the second socket pin 121 of the socket 120 is misaligned and obliquely inserted corresponding to the position of the first plug pin 111 of the plug 110. The insulating portion 112 can isolate part of the socket pin 121 and the plug pin 111 from contacting.

[0050] Specifically, in combination with Figure 3 、 Figure 4 , there are 5 socket pins 121 provided on the socket 120. The rightmost one is the first socket pin 121, and the leftmost one is the fifth socket pin 121. When the socket 120 is inserted into the plug 110 in the third direction, the end of the first socket pin 121 on the socket 120 close to the plug 110 is denoted as point A, and the maximum distance between the inner front edge of the end of the socket 120 far from the first socket pin 121 in the first direction and point A is L2, that is, the maximum distance between the inner front edge of the end of the socket 120 provided with the fifth socket pin 121 and point A is L2. L2 is less than L1, so that when misaligned insertion occurs, at most only the second socket pin 121 can contact the plug pin 111. Among them, the inner front edge is the end of the socket 120 close to the plug 110. In this misaligned insertion state, point A abuts against the outer wall 113 of the plug 110.

[0051] It should be noted that the front edge in this article refers to the front end of the insertion. The front edge of the socket 120 is understood as the end of the socket 120 close to the plug 110. The front edge of the plug 110 is understood as the end of the plug 110 close to the socket 120. The front edge of the insulating portion 112 is the end of the insulating portion 112 close to the socket 120. The front edge of the socket pin 121 is the end of the socket pin 121 close to the plug 110. The front edge of the plug pin 111 is the end of the plug pin 111 close to the socket 120.

[0052] Optionally, if the second socket pin 121 of the socket 120 is misaligned and obliquely inserted corresponding to the position of the first plug pin 111 of the plug 110, that is, when the socket 120 is inserted into the plug 110 in the third direction, the first socket pin 121 contacts the outer wall 113 of the plug 110, that is, it is located outside the plug 110. The front edge of the end of the socket 120 far from the first socket pin 121 in the first direction contacts the front edge of the insulating portion 112 of the plug 110. In the insertion direction, there is a gap between the second socket pin 121 and the first plug pin 111. In this way, all the socket pins 121 and the plug pins 111 do not contact each other.

[0053] It should be noted that if two or more socket pins 121 and two or more plug pins 111 are respectively electrically connected, a circuit loop can be formed. If the insertion is incorrect, the circuit board may be damaged due to an out-of-range input voltage. In this embodiment, at most only one socket pin 121 and one plug pin 111 are in contact, so a loop cannot be formed, and thus the circuit board will not be damaged due to the input voltage range.

[0054] Optionally, if the second socket pin 121 of the socket 120 is inserted obliquely in a misaligned manner corresponding to the position of the first plug pin 111 of the plug 110, that is, when the socket 120 is inserted into the plug 110 in the third direction, in the insertion direction, the first socket pin 121 contacts the outer wall 113 of the plug 110, the second socket pin 121 contacts the first plug pin 111, and there is a gap between the third socket pin 121 of the socket 120 and the second plug pin 111 of the plug 110. Since the first socket pin 121 is located outside the plug 110 and there is a gap between the third socket pin 121 and the plug pin 111, they cannot contact. Therefore, at most only the second socket pin 121 may contact the plug pin 111, and even if they contact, a loop cannot be formed, and it will not affect the circuit board.

[0055] Optionally, L3 is 10% to 30% of L1. This can not only ensure a compact structure but also achieve a good insulation effect, ensuring an effective isolation of the socket pin 121 and the plug pin 111 in case of incorrect insertion. Optionally, L3 is greater than or equal to 0.5 mm. For example, it can be 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, or 5.8 mm, etc., and no specific limitation is made here. In this way, while preventing incorrect insertion, the reliability and connection efficiency of the electrical connection between the plug pin 111 and the socket pin 121 are ensured, and the structure is compact with a small overall volume.

[0056] Optionally, the plug 110 is provided with an installation groove 114, and each plug pin 111 is located in an installation groove 114. The distance between the side of the installation groove 114 close to the leading edge of the plug 110 and the leading edge of the insulating portion 112 is L3. The number of installation grooves 114 is equal to the number of plug pins 111, and the multiple plug pins 111 are isolated from each other, having a safety gap to achieve electrical insulation. In this embodiment, the multiple plug pins 111 are arranged at equal intervals in the first direction.

[0057] Similarly, a plurality of socket pins 121 are equally spaced in the first direction. There is a safety gap between two adjacent socket pins 121. It can be understood that when the socket 120 and the plug 110 are correctly plugged in, that is, the alignment is accurate, each socket pin 121 contacts the corresponding plug pin 111 after plugging to achieve electrical connection.

[0058] In other embodiments, the number and distribution form of the plug pins 111 can be flexibly set according to actual needs. Similarly, the number and distribution form of the socket pins 121 can be flexibly set according to actual needs, as long as the socket pins 121 and the plug pins 111 can be plugged in one-to-one, and no specific limitation is made here.

[0059] Optionally, a buckle 115 is provided on the outer sidewall 113 of the plug 110, and the buckle 115 is used for snap connection with the box cover. The plug 110 can be fixed on the part to be installed, such as the box cover. When the socket 120 and the plug 110 are correctly plugged in, there is a gap between the front edge of the socket 120 and the buckle 115 along the plugging direction. That is, the socket 120 and the buckle 115 do not interfere with each other and do not affect each other, which can ensure the convenience and smoothness of the plugging of the socket 120.

[0060] Combined with Figure 7 , optionally, the socket 120 has an annular edge 123, and the socket pins 121 are arranged inside the annular edge 123. When the plug 110 and the socket 120 are in the plugged state, the annular edge 123 is sleeved on the plug 110. In this embodiment, the annular edge 123 is at least located at both ends of the socket 120 in the first direction, and the annular edge 123 abuts against the outer sidewall 113 of the plug 110. The arrangement of the annular edge 123 can play a good role in protecting the socket pins 121. Optionally, the annular edge 123 is closed along the perimeter of the plurality of socket pins 121 to prevent debris from entering the socket 120 and affecting the good contact between the socket pins 121 and the plug pins 111. In addition, the annular edge 123 can also play a limiting role in the first direction. When the socket 120 and the plug 110 are misaligned and plugged, one end of the front edge of the annular edge 123 is located outside the plug 110 and is spaced from the outer sidewall 113 of the plug 110 by a certain distance, and the socket pin 121 adjacent to this end abuts against the outer sidewall 113 of the plug 110, and the other end can only abut against the front edge of the insulating part 112, which can limit the contact range between the socket pins 121 and the plug pins 111, ensure that at most one socket pin 121 can contact the plug pin 111 in the misaligned plugging state, play a role in preventing misplugging, and improve the convenience and safety of assembly.

[0061] It can be understood that the length of the insulating portion 112 of the socket 120 in the insertion direction is L5, and L5 ranges from 1.15 mm to 1.5 mm. And / or, the length of the socket pin 121 is L6, and L6 is 4 to 6 times of L5. In this embodiment, the length of the socket pin 121 is about 6 mm. The length of the annular rib 123 in the insertion direction is about 8.2 mm to 8.8 mm, such as 8.5 mm. In some embodiments, the insulating portion on the socket can be the extended length of the annular rib in the insertion direction, for example, the extended length is L5, any value within 1.15 mm to 1.5 mm. In this way, while preventing misinsertion, the reliability and connection efficiency of the electrical connection between the plug pin 111 and the socket pin 121 are ensured, and the structure is compact and the overall volume is small.

[0062] In this embodiment, the insulating portion 112 can be provided only at the end of the plug 110, and at this time, there is no need to extend the insertion end of the socket 120. Or, the insulating portion 112 can also be provided only at the end of the socket 120, and at this time, there is no need to extend the insertion end of the plug 110. Or, the insulating portions 112 are respectively formed by extending the ends of the plug 110 and the socket 120, and the length of the insulating portion 112 in the insertion direction can be set according to the actual situation, as long as it can meet the requirement that when misaligned and obliquely inserted, at most only one of the socket pin 121 and the plug pin 111 is in contact and electrically connected.

[0063] An embodiment of the present utility model further provides a household electrical appliance product, including a circuit board and the plug-in terminal 100 according to any one of the foregoing embodiments. A signal line is connected to the socket 120, and the signal line is connected to the circuit board. A signal line is connected to the plug 110, and the signal line on the plug 110 is connected to the circuit board. The plug 110 can be fixed on the carrier through the box cover. The plug 110 and the box cover are fixed by snap connection. The box cover can also be other parts to be installed, which are not specifically limited here. After the socket 120 and the plug 110 are plugged in, signal connections such as power supply can be conducted to ensure the normal operation of the electronic product. The electronic product includes but is not limited to lamps, sockets, chargers, etc.

[0064] The plug-in terminal 100 provided in this embodiment has an anti-fooling function. When the socket 120 and the plug 110 are not correctly aligned, the insertion cannot be completed, and at most only one socket pin 121 and one plug pin 111 are in contact, which will not form a loop, will not affect the circuit board, and will not cause damage due to the input voltage of the circuit board exceeding the range caused by incorrect insertion, which is safe and reliable.

[0065] In summary, the plug-in terminal 100 and the household electrical appliance product provided by the embodiments of the present utility model have the following beneficial effects, including:

[0066] For the plug-in terminal 100 provided by the present application, an insulating portion 112 is provided at the leading edge of the plug 110. If the plug pin 111 and the socket pin 121 are misaligned and obliquely inserted in the first direction, the insulating portion 112 can isolate some of the socket pins 121 from contacting the plug pin 111, so that in the obliquely inserted state, at most only one plug pin 111 can contact the socket pin 121. This setting can prevent situations such as power supply burnout caused by misalignment and incorrect insertion during the plugging process of the plug 110 and the socket 120, and improve the assembly reliability and safety.

[0067] The household electrical appliance product provided by the present application includes the above-mentioned plug-in terminal 100, which has an anti-fooling function when the socket 120 and the plug 110 are connected, preventing damage to the circuit board due to an out-of-range input voltage caused by the misaligned connection of the socket pin 121 and the plug pin 111, and improving the assembly reliability and safety.

[0068] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A plug-in terminal, characterized in that, It includes a socket (120) and a plug (110) that is plugged and mated with the socket (120); A plurality of plug pins (111) are provided on the plug (110) at intervals along a first direction; A plurality of socket pins (121) are provided on the socket (120) at intervals along the first direction; The plug (110) and the socket (120) are plugged along a second direction, so that the plug pins (111) and the socket pins (121) are electrically connected in one-to-one correspondence; the first direction and the second direction are perpendicular; An insulating portion (112) is provided at one end of the plug (110) close to the socket (120) and / or at one end of the socket (120) close to the plug (110) along the plugging direction; when the plug (110) is plugged with the socket (120) along the second direction, the socket pins (121) first enter the insulating portion (112) of the plug (110), and then contact and are electrically connected to the plug pins (111), and / or, the plug pins (111) first enter the insulating portion (112) of the socket (120), and then contact and are electrically connected to the socket pins (121); When the socket (120) is plugged with the plug (110) in a third direction, at most only one of the plug pins (111) can contact and be electrically connected to the socket pins (121); wherein the third direction forms an acute angle with the second direction.

2. The plug-in terminal according to claim 1, characterized in that, When the socket (120) is plugged with the plug (110) in a third direction, the socket pins (121) are located within the insulating portion (112) of the plug (110) and are spaced apart from the plug pins (111).

3. The plug-in terminal according to claim 1, characterized in that, The width of the insulating portion (112) of the plug (110) in the first direction is L1; when the socket (120) is plugged with the plug (110) in a third direction, the end of the first socket pin (121) of the socket (120) close to the plug (110) is denoted as point A, and the maximum distance between the inner front edge of the end of the socket (120) away from the first socket pin (121) in the first direction and point A is L2, and L2 is less than L1; wherein, the inner front edge is the inner edge of the end of the socket (120) close to the plug (110).

4. The plug-in terminal according to claim 1, characterized in that, When the socket (120) is plugged with the plug (110) in a third direction, the first socket pin (121) contacts the outer side wall (113) of the plug (110), and the front edge of the end of the socket (120) away from the first socket pin (121) in the first direction contacts the front edge of the insulating portion (112) of the plug (110); In the plugging direction, there is a gap between the second socket pin (121) and the first plug pin (111).

5. The plug-in terminal according to claim 1, characterized in that, When the socket (120) is plugged into the plug (110) in the third direction, in the plugging direction, the first socket pin (121) contacts the outer wall (113) of the plug (110), the second socket pin (121) of the socket (120) contacts the first plug pin (111) of the plug (110), and there is a gap between the third socket pin (121) of the socket (120) and the second plug pin (111) of the plug (110).

6. The plug-in terminal according to claim 1, wherein The length of the insulating portion (112) of the plug (110) in the plugging direction is L3, the length of the plug pin (111) is L4, and L3 is 0.1 times to 1.5 times of L4.

7. The plug-in terminal according to claim 6, wherein, L3 is greater than or equal to 0.5 mm.

8. The plug-in terminal according to claim 6, characterized in that, An installation groove (114) is provided on the plug (110), each plug pin (111) is located in one installation groove (114), and the distance between the side of the installation groove (114) close to the leading edge of the plug (110) and the leading edge of the insulating portion (112) on the plug (110) is L3.

9. The plug-in terminal according to claim 1, wherein, The length of the insulating portion (112) of the plug (110) in the plugging direction is L3, the width L1 of the insulating portion (112) in the first direction is equal to the width of the plug (110) in the first direction, and L3 is 10% to 30% of L1.

10. The plug-in terminal according to claim 1, characterized in that, The length of the insulating portion (112) of the socket (120) in the plugging direction is L5, and L5 is 1.15 mm to 1.5 mm; and / or, the length of the socket pin (121) is L6, and L6 is 4 times to 6 times of L5.

11. The plug-in terminal according to claim 1, characterized in that, A buckle (115) is provided on the outer wall (113) of the plug (110), and the buckle (115) is used for clamping with the part to be installed; in the state where the socket (120) and the plug (110) are correctly plugged, there is a gap between the leading edge of the socket (120) and the buckle (115) along the plugging direction.

12. The plug-in terminal according to any one of claims 1 to 11, characterized in that, The socket (120) has an annular rib (123), and the socket pins (121) are arranged inside the annular rib (123); when the plug (110) and the socket (120) are in the plugged state, the annular rib (123) is sleeved on the plug (110).

13. An appliance product, characterized in that, Including the plug-in terminal according to any one of claims 1 to 12.

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