Connector

Abstract

The utility model discloses a connector, which comprises an insulating shell and a contact element arranged in the insulating shell, the connector also comprises an adapter fixed on a circuit board, the adapter is electrically connected with the circuit board, one side of the insulating shell close to the circuit board is provided with an installation cavity, and the contact element is arranged in the installation cavity. One end of the contact piece is located in the installation cavity, and at least part of the adapter extends into the installation cavity so as to be connected with the contact piece in an inserted mode. The connector provided by the utility model is compact in structure, and can effectively save the installation space required by the connection of the connector and the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and particularly relates to an electrical connector. Background Art

[0002] In the prior art, in order to realize the electrical connection between a connector and a circuit board, there are usually two methods. One is that the end of a contact is pressed with a cable, and then the electrical connection is realized by welding the cable to the circuit board. However, the connector of this method has a complex structure and the connection operation is cumbersome. The other is that the contact extends out of the connector housing, and then the end of the extended part of the contact is fixedly connected to the circuit board. However, the axial length of the contact of this method is relatively long, and the connection between the contact and the circuit board will occupy a large installation space. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a connector with a simple structure and a compact layout, which can effectively save the installation space required for the connection between the connector and the circuit board.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A connector (100) includes an insulating housing (110) and a contact (120) installed in the insulating housing (110). The connector further includes an adapter (200) fixed on a circuit board (300). The adapter (200) is electrically connected to the circuit board (300). An installation cavity (111) is provided on one side of the insulating housing (110) close to the circuit board (300). One end of the contact (120) is located in the installation cavity (111), and at least a part of the adapter (200) extends into the installation cavity (111) to be plugged and connected with the contact (120).

[0006] Optionally, the distance between the end of the contact (120) close to the circuit board (300) and the circuit board (300) is not less than the distance between the bottom of the insulating housing (110) and the circuit board (300).

[0007] Optionally, the insulating housing (110) overlaps with the adapter (200) axially, and the contact (120) overlaps with the adapter (200) axially.

[0008] Optionally, the ratio of the length of the overlapping part of the contact (120) and the adapter (200) axially to the height of the adapter (200) ranges from 1 / 4 to 3 / 4.

[0009] Optionally, the projection of the insulating housing (110) on the circuit board (300) covers the projection of the adapter (200) on the circuit board (300).

[0010] Optionally, positioning studs (112) are provided at the bottom of the insulating housing (110), and positioning holes (310) corresponding to the positioning studs are provided on the circuit board (300).

[0011] Optionally, the positioning stud (112) includes a first stud (1121) and a second stud (1122) arranged coaxially. The first stud (1121) is located on the side of the positioning stud (112) close to the circuit board (300). The first stud (1121) has a clearance fit with the positioning hole (310), and the diameter of the second stud (1122) is greater than the diameter of the positioning hole (310).

[0012] Optionally, the height of the second stud (1122) is less than the height of the adapter (200).

[0013] Optionally, an elastic buffer structure is provided at the bottom of the insulating housing (110).

[0014] Optionally, a seal (400) is provided between the insulating housing (110) and the contact member (120). The seal (400) has an interference fit with both the insulating housing (110) and the contact member (120); alternatively, the seal (400) is integrally injection molded with the contact member (120) and then installed into the insulating housing (110), and the seal (400) has an interference fit with the insulating housing (110).

[0015] Optionally, the connector is used in an inverter, and the assembly direction of the insulating housing (110) and the inverter housing (500) is opposite to the insertion direction of the contact member (120) and the adapter (200).

[0016] Optionally, the inverter housing (500) is provided with a mounting hole (510). The insulating housing (110) penetrates through the mounting hole (510) from the inside to the outside of the inverter and is fixed in cooperation with a nut (130) outside the inverter housing (500).

[0017] Optionally, the insulating housing (110) includes a mounting boss (113) that abuts against the housing beside the mounting hole (510). A gasket (600) is provided between the mounting boss (113) and the inner side surface of the inverter housing (500). The insulating housing (110) further includes a thread (114) adjacent to the mounting boss (113), and the nut (130) is fixedly connected to the thread (114).

[0018] Optionally, a first anti-loosening protrusion (115) is provided on the insulating housing (110), and a second anti-loosening protrusion (131) is provided on the nut (130), the second anti-loosening protrusion (131) is aligned with the first anti-loosening protrusion (115), and the height of the first anti-loosening protrusion (115) is smaller than the height of the thread (114), and the height of the second anti-loosening protrusion (131) is greater than the height of the thread (114).

[0019] Optionally, a side of the nut (130) away from the mounting hole (510) is provided with an assembly groove (132) that cooperates with an assembly tool.

[0020] Optionally, the adapter (200) comprises a base (210) and a watchband contact finger (220), wherein the watchband contact finger (220) has an insertion interface (223) for plugging with the contact piece (120), and when the contact piece (120) is plugged with the watchband contact finger (220), the watchband contact finger (220) can slide within the base (210) along a direction perpendicular to the insertion direction of the contact piece (120).

[0021] Optionally, the base (210) comprises a first supporting surface (211) and a second supporting surface (212) which are arranged in parallel, the strap contact finger (220) can be slidably clamped between the first supporting surface (211) and the second supporting surface (212), and the first supporting surface (211) is provided with a first opening (2111) corresponding to the plug-in port (223).

[0022] Optionally, a temperature sensor (700) is provided on the contact member (120) or the base (210).

[0023] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0024] 1. By setting a mounting cavity on the side of the insulating shell close to the circuit board, the adapter at least partially extends into the mounting cavity to be plugged and connected with the contact. This arrangement enables the mounting cavity to provide preliminary positioning for the plugging of the contact and the adapter, so as to improve the alignment accuracy of the plugging process. In addition, by extending a part of the adapter structure into the mounting cavity to directly plug with the contact, the axial length of the contact can be shortened, making the overall structure of the connector simple and compact, and effectively saving the installation space required for the connection between the connector and the circuit board.

[0025] 2. By setting the distance between the end of the contact piece close to the circuit board and the circuit board to be no less than the distance between the bottom of the insulating housing and the circuit board, the contact piece can be restricted to be located in the mounting cavity of the insulating housing, further shortening the axial length of the contact piece.

[0026] 3. By restricting the axial overlap of the insulating housing with the adapter and the axial overlap of the contact member with the adapter, it can be ensured that at least part of the structure of the contact member can extend into the adapter to achieve the plug-in connection between the contact member and the adapter.

[0027] 4. By setting the projection of the insulating housing on the circuit board to cover the projection of the adapter on the circuit board, the entire adapter can be extended into the insulating housing to minimize the axial length of the contact member.

[0028] 5. By providing positioning studs at the bottom of the insulating housing and corresponding positioning holes for the positioning studs on the circuit board, the cooperation between the positioning studs and the positioning holes can position the installation position of the connector on the circuit board so that the contact member can be aligned and plugged with the adapter. And setting the first stud to have a clearance fit with the positioning hole and the diameter of the second stud to be larger than the diameter of the positioning hole can not only facilitate the alignment and cooperation between the first stud and the positioning hole, but also prevent the bottom of the insulating housing from directly contacting the surface of the circuit board to avoid damaging the surface structure of the circuit board. And setting the height of the second stud to be less than the height of the adapter can control the gap between the bottom of the insulating housing and the circuit board within a reasonable height range.

[0029] 6. By providing an elastic buffer structure at the bottom of the insulating housing, the acting force generated during the plugging process between the connector and the adapter can be buffered to reduce the direct acting force of the insulating housing on the circuit board.

[0030] 7. By providing a seal between the insulating housing and the contact member, or by integrally injection molding the seal with the contact member and then installing it into the insulating housing, the seal between the internal contact member of the connector and the insulating housing can be achieved, and the waterproof and dustproof effect inside the connector can be realized even when the connector is not docked and cooperated with other connectors.

[0031] 8. By passing the insulating housing through the mounting hole from the inside to the outside of the inverter and cooperating with the nut on the outside of the inverter housing for fixation, it is convenient to first install and fix the connector outside the inverter and then plug and fix the connector with the adapter.

[0032] 9. By setting the watchband contact finger to be slidable in the base along the direction perpendicular to the insertion direction of the contact member, the floating plug-in connection between the contact member and the adapter can be achieved, reducing the difficulty of the plug-in connection and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Cross-section of the connector of Embodiment 1 and the circuit board in the assembled state Figure 1 ;

[0034] Figure 2 Cross-section of the connector of Embodiment 1 and the circuit board in the assembled state Figure 2 ;

[0035] Figure 3 is Figure 2 the enlarged view of the structure at position A in

[0036] Figure 4 is Figure 2 the enlarged view of the structure at position B in

[0037] Figure 5 the schematic diagram of the structure of the connector (adapter not shown) in Embodiment 1 Figure 1 ;

[0038] Figure 6 the schematic diagram of the structure of the connector (adapter not shown) in Embodiment 1 Figure 2 ;

[0039] Figure 7 the schematic diagram of the structure of the connector (nut not assembled) in Embodiment 1;

[0040] Figure 8 the schematic diagram of the structure of the nut of the connector in Embodiment 1;

[0041] Figure 9 the schematic diagram of the structure of the adapter in Embodiment 1 Figure 1 ;

[0042] Figure 10 the schematic diagram of the structure of the adapter in Embodiment 1 Figure 2 ;

[0043] Figure 11 the schematic diagram of the structure of the base of the adapter in Embodiment 1;

[0044] Figure 12 the schematic diagram of the structure of the watch band contact finger of the adapter in Embodiment 1 Figure 1 ;

[0045] Figure 13 the schematic diagram of the structure of the watch band contact finger of the adapter in Embodiment 1 Figure 2 ;

[0046] Figure 14 the schematic diagram of the insertion process of the contact part and the adapter in Embodiment 1 Figure 1 ;

[0047] Figure 15 the schematic diagram of the insertion process of the contact part and the adapter in Embodiment 1 Figure 2 ;

[0048] Figure 16 the schematic diagram of a layout scheme of the temperature sensor in Embodiment 1;

[0049] Figure 17 the schematic diagram of another layout scheme of the temperature sensor in Embodiment 1

[0050] Figure 18 Schematic diagram of the connection solution between multiple connectors and the circuit board in Embodiment 1;

[0051] Figure 19 Cross-sectional view when the connector and the circuit board in Embodiment 2 are in an assembled state;

[0052] Figure 20 Cross-sectional view when the connector and the circuit board in Embodiment 3 are in an assembled state;

[0053] Figure 21 Schematic diagram of the structure of the adapter in Embodiment 4;

[0054] Figure 22 Schematic diagram of a connection solution between a connector and a circuit board in Embodiment 4;

[0055] Figure 23 Schematic diagram of another connection solution between a connector and a circuit board in Embodiment 4.

[0056] Reference numerals: 100 - Connector; 110 - Insulating housing; 111 - Installation cavity; 112 - Positioning stud; 1121 - First stud; 1122 - Second stud; 113 - Mounting boss; 114 - Thread; 115 - First anti-loosening protrusion; 120 - Contact; 121 - Cylinder; 130 - Nut; 131 - Second anti-loosening protrusion; 132 - Assembly groove;

[0057] 200 - Adapter; 210 - Base; 211 - First support surface; 2111 - First opening; 212 - Second support surface; 2121 - Second opening; 213 - Accommodation cavity; 2131 - First side support surface; 2132 - Second side support surface; 2133 - Bottom support surface; 2134 - Snap structure; 2135 - Welding pin; 2136 - Through hole; 220 - Strap finger; 221 - Strap plate; 2211 - Strap plate protrusion; 222 - Strap claw; 2221 - First end; 2222 - Second end; 223 - Insertion interface;

[0058] 300 - Circuit board; 310 - Positioning hole; 320 - Avoidance hole;

[0059] 400 - Sealing member;

[0060] 500 - Inverter housing; 510 - Mounting hole;

[0061] 600 - Sealing gasket;

[0062] 700 - Temperature sensor. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0064] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0065] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0066] The supplementary description of the accompanying drawings is as follows: Figure 2 Corresponding to Figure 1 the position where the connector rotates 90 degrees; Figure 14 and Figure 15 show different processes of the contact member being inserted into the adapter. Embodiment 1

[0067] Such as Figure 1 and Figure 2As shown in the figure, the utility model provides a connector (100), which includes an insulating housing (110) and a contact (120) installed inside the insulating housing (110). The connector further includes an adapter (200) fixed on a circuit board (300), and the adapter (200) is electrically connected to the circuit board (300). An installation cavity (111) is provided on one side of the insulating housing (110) close to the circuit board (300). One end of the contact (120) is located inside the installation cavity (111). The adapter (200) and the insulating housing (110) are on the same side of the circuit board (300), that is, both the adapter and the insulating housing are located above the circuit board. At least a part of the adapter (200) extends into the installation cavity (111) to be plugged and connected with the contact (120). The connector of the utility model is an MC4 male connector. It can be understood that the connector can also be an MC4 female connector. Among them, the contact is a metal conductor, usually made of copper material.

[0068] With the above settings, the installation cavity can provide preliminary positioning for the plugging of the contact and the adapter, so as to improve the alignment accuracy during the plugging process. In addition, by extending a part of the adapter structure into the installation cavity to directly plug with the contact, the axial length of the contact can be shortened, making the overall structure of the connector simple and the layout compact, effectively saving the installation space required for the connection between the connector and the circuit board.

[0069] As Figure 1 shown, the distance between the end of the contact (120) close to the circuit board (300) and the circuit board (300) is not less than the distance between the bottom of the insulating housing (110) and the circuit board (300), that is, the distance between the end of the contact (120) close to the circuit board (300) and the circuit board (300) is greater than the distance between the bottom of the insulating housing (110) and the circuit board (300), or the distance between the end of the contact (120) close to the circuit board (300) and the circuit board (300) is equal to the distance between the bottom of the insulating housing (110) and the circuit board (300). Such a setting can limit the contact to be located inside the installation cavity of the insulating housing, further shortening the axial length of the contact. In this embodiment, the distance between the end of the contact (120) close to the circuit board (300) and the circuit board (300) is greater than the distance between the bottom of the insulating housing (110) and the circuit board (300). Here, the distance refers to the distance along the axial direction of the contact, ensuring that the contact is completely located inside the insulating housing.

[0070] As Figure 1 and Figure 2As shown, the insulating housing (110) overlaps with the adapter (200) axially, and the contact member (120) overlaps with the adapter (200) axially. Such an arrangement can ensure that at least part of the structure of the contact member can extend into the adapter to achieve the plug-in connection between the contact member and the adapter. The ratio of the length of the overlapping part of the contact member (120) and the adapter (200) axially to the height of the adapter (200) ranges from 1 / 4 to 3 / 4. When the height ratio is within this range, the connection reliability between the contact member and the adapter can be ensured. When the ratio is greater than 3 / 4, the probability of the contact member colliding with the bottom of the adapter increases, and the force generated by the collision may have an adverse impact on the circuit board or the contact member. When the ratio is less than 1 / 4, the axial contact length between the contact member and the adapter is small, and the plug-in connection is unstable, and there may be a risk of loosening. In this embodiment, the ratio of the length of the overlapping part of the contact member (120) and the adapter (200) axially to the height of the adapter (200) is 1 / 2. Selecting this ratio can obtain an ideal connection effect.

[0071] As Figure 1 and Figure 2 shown, the projection of the insulating housing (110) on the circuit board (300) covers the projection of the adapter (200) on the circuit board (300), and the whole adapter can be extended into the insulating housing to minimize the axial distance between the contact member and the adapter, thereby shortening the length of the contact member and minimizing the axial length of the contact member.

[0072] As Figure 3 and Figure 5 shown, the bottom of the insulating housing (110) is provided with positioning studs (112), and the circuit board (300) is provided with positioning holes (310) corresponding to the positioning studs. The cooperation between the positioning studs and the positioning holes can position the installation position of the connector on the circuit board to facilitate the alignment and plug-in connection between the contact member and the adapter.

[0073] Specifically, the positioning stud (112) includes a first stud (1121) and a second stud (1122) arranged coaxially. The first stud (1121) is located on the side of the positioning stud (112) close to the circuit board (300). The first stud (1121) has a clearance fit with the positioning hole (310), and the diameter of the second stud (1122) is greater than the diameter of the positioning hole (310). Such an arrangement can not only facilitate the alignment and cooperation between the first stud and the positioning hole, but also prevent the bottom of the insulating housing from directly contacting the surface of the circuit board, preventing damage or wear to the surface structure of the circuit board. The height of the second stud (1122) is less than the height of the adapter (200), which can control the gap between the bottom of the insulating housing and the circuit board within a reasonable height range to ensure that at least part of the adapter extends into the insulating housing. Among them, the length of the first stud can be set to be less than or equal to the depth of the positioning hole so that the first stud is completely located within the positioning hole.

[0074] In other alternative solutions, an elastic buffer structure is provided at the bottom of the insulating housing (110). By providing the elastic buffer structure, the force generated during the insertion process of the connector and the adapter can be buffered, reducing the direct force of the insulating housing on the circuit board. It can be understood that the elastic buffer structure can also exist simultaneously with the positioning studs, and the two are spaced apart and distributed at the bottom of the insulating housing, which can achieve the positioning and buffering effects simultaneously.

[0075] As Figure 4 shown, a seal (400) is provided between the insulating housing (110) and the contact member (120). The seal (400) is in interference fit with both the insulating housing (110) and the contact member (120). Such a setting can achieve the sealing between the internal contact member and the insulating housing of the connector, and can achieve the waterproof and dustproof effects inside the connector even when the connector is not docked and mated with other connectors. In this embodiment, the seal is an O-ring.

[0076] In other alternative solutions, the seal (400) is integrally injection-molded with the contact member (120) and then installed into the insulating housing (110), and the seal (400) is in interference fit with the insulating housing (110). Such a setting can also achieve the waterproof and dustproof effects inside the connector.

[0077] In this embodiment, the connector is used in a photovoltaic inverter. The assembly direction of the insulating housing (110) and the inverter housing (500) is opposite to the insertion direction of the contact member (120) and the adapter (200); the assembly direction of the contact member (120) and the insulating housing (110) is opposite to the insertion direction of the contact member (120) and the adapter (200). By setting the two assembly directions to be opposite respectively, the adverse effects of the latter assembly on the fixed position or fixed structure of the former assembly can be minimized.

[0078] Specifically, as Figure 1 and Figure 2 shown, the inverter housing (500) is provided with a mounting hole (510). The insulating housing (110) penetrates the mounting hole (510) from the inside to the outside of the inverter and is fixed in cooperation with a nut (130) outside the inverter housing (500). The insulating housing (110) includes a mounting boss (113) that abuts against the housing beside the mounting hole (510). A gasket (600) is provided between the mounting boss (113) and the inner side surface of the inverter housing (500). The insulating housing (110) further includes a thread (114) adjacent to the mounting boss (113). The nut (130) is fixedly connected to the thread (114) to fix the connector on the inverter housing.

[0079] As Figure 6 andFigure 8 As shown, a side of the nut (130) away from the mounting hole (510) is provided with an assembly groove (132) that cooperates with an assembly tool, and a plurality of assembly grooves are evenly distributed along the circumference of the nut. By providing the assembly grooves on the nut, it is convenient for assemblers to use assembly tools to easily install and remove the nut.

[0080] like Figure 7 and Figure 8 As shown, a first anti-loosening protrusion (115) is provided on the insulating housing (110), and a second anti-loosening protrusion (131) is provided on the nut (130). The second anti-loosening protrusion (131) is aligned with the first anti-loosening protrusion (115), and the height of the first anti-loosening protrusion (115) is less than the height of the thread (114), and the height of the second anti-loosening protrusion (131) is greater than the height of the thread (114). By providing the first anti-loosening protrusion and the second anti-loosening protrusion that cooperate with each other, an anti-loosening effect can be generated after the nut and the thread on the insulating housing are tightened, and the height of the first anti-loosening protrusion (115) is set to be less than the height of the thread (114) to avoid blocking the nut from being screwed into the thread.

[0081] like Figure 9 , Figure 10 and Figure 13 As shown, the adapter (200) comprises a base (210) and a watchband contact finger (220), the watchband contact finger (220) having an insertion interface (223) for plugging with the contact piece (120), and when the contact piece (120) and the watchband contact finger (220) are plugged, the watchband contact finger (220) can slide in the base (210) along a direction perpendicular to the insertion direction of the contact piece (120). This arrangement can realize floating plugging of the contact piece and the adapter, reduce the difficulty of plugging connection, and improve installation efficiency.

[0082] Specifically, Figures 9 - 13 As shown, the base (210) includes a first supporting surface (211) and a second supporting surface (212) arranged in parallel, and the strap contact finger (220) can be slidably clamped between the first supporting surface (211) and the second supporting surface (212), so that the strap contact finger (220) can translate and slide in the base (210), and the first supporting surface (211) is provided with a first opening (2111) corresponding to the plug interface (223).

[0083] By setting the watch band contact finger to be inserted and connected to the contact member and the watch band contact finger to be translatable and slidable within the base, floating insertion connection between the contact member and the adapter can be achieved, improving the tolerance ability of the insertion connection to the relative positions of the two and reducing the difficulty of the insertion connection; by setting the base to include a first support surface and a second support surface arranged in parallel, the watch band contact finger can be slidably clamped between the first support surface and the second support surface, and the movement path of the watch band contact finger can be limited between the two support surfaces, reducing the sway of the watch band contact finger in the vertical direction and further ensuring the accuracy of the insertion connection between the contact member and the watch band contact finger.

[0084] Further, as Figure 1 and Figure 9 shown, the base (210) further includes a receiving cavity (213) located below the first support surface (211) and the second support surface (212), and the contact member penetrates through the first support surface (211), the second support surface (212) and the watch band contact finger (220) and then extends into the receiving cavity (213). By providing a receiving cavity below the first support surface and the second support surface, the contact member penetrates through the first support surface, the second support surface and the watch band contact finger and then extends into the receiving cavity, which can increase the contact area between the contact member and the adapter and improve the reliability of their connection.

[0085] As Figure 9 and Figure 10 shown, the watch band contact finger (220) penetrates through the second support surface (212) and then extends into the receiving cavity (213). The watch band contact finger arranged in this way can guide the contact member, facilitating the contact member to quickly extend into the receiving cavity after being inserted into the watch band contact finger. Additionally, by the axial extension setting of the watch band contact finger, the contact area between the contact member and the watch band contact finger in the axial direction can be increased, improving the connection reliability.

[0086] In addition, as Figure 14 and Figure 15 shown, the part of the watch band contact finger (220) passing through the second support surface (212) is in clearance fit with the second opening (2121) of the second support surface (212). Such a setting can provide a movement space for the watch band contact finger to slide within the second opening, further ensuring that the contact member can achieve floating insertion connection with the adapter.

[0087] As Figures 9 - 11As shown, the accommodation cavity (213) is formed by a first side support surface (2131) extending downward from the first support surface (211), a second side support surface (2132) extending downward from the second support surface (212), and a bottom support surface (2133) formed by the first side support surface (2131) and the second side support surface (2132) extending toward the center and intersecting. The first support surface (211), the second support surface (212), and the accommodation cavity (213) are integrally formed by bending a metal material. The first support surface (211) and the second support surface (212) are fixedly connected by a plurality of pairs of snap structures (2134) extending from their respective edges. Specifically, there are 4 pairs of snap structures, distributed between the first side support surface (2131) and the second side support surface (2132). The snap structure includes a card slot formed by bending the first support surface downward and a hook extending outward from the second support surface. The hook cooperates with the card slot to fix the first support surface and the second support surface.

[0088] As Figures 9 - 10 and Figures 12 - 13 shown, the watch band finger (220) includes a watch band plate (221) and a plurality of watch band claws (222). The watch band claws (222) are inserted and cooperated with the contact member (120). The watch band plate (221) is parallel and located between the first support surface (211) and the second support surface (212), and the distance between the first support surface (211) and the second support surface (212) is greater than the thickness of the watch band plate (221). A plurality of watch band plate protrusions (2211) are provided on the top surface of the watch band plate (221). The watch band plate protrusions (2211) are in contact with the bottom of the first support surface (211), and the bottom surface of the watch band plate (221) is in contact with the top of the second support surface (212).

[0089] As Figure 14 and Figure 15 shown, one end of the contact member (120) close to the adapter (200) is a cylinder (121) with a rounded corner. The diameter of the cylinder (121) is greater than the minimum inner diameter of the insertion opening surrounded by a plurality of watch band claws (222). As Figures 12 - 13 shown, the watch band claws (222) are integrally formed with the watch band plate (221), and the watch band claws (222) are located in the middle of the watch band plate (221). The watch band claws (222) include a first end (2221) connected to the watch band plate (221) and a second end (2222) extending downward from the first end (2221). The second end (2222) can be elastically deformed under an external force, and the inner diameter of the insertion opening surrounded by the second end (2222) is smaller than the inner diameter of the insertion opening surrounded by the first end (2221).

[0090] By setting the second end of the watch band claw to be elastically deformable under an external force, and when the diameter of the contact member cylinder is greater than the minimum inner diameter of the insertion opening surrounded by the watch band claw, further setting the inner diameter of the insertion opening surrounded by the second end to be smaller than the inner diameter of the insertion opening surrounded by the first end, it is possible to allow the contact member to smoothly pass through the insertion opening surrounded by the first end and enter the insertion opening surrounded by the second end, and it is possible to make the outer wall of the contact member in close contact with the insertion opening surrounded by the second end, thereby increasing the connection firmness.

[0091] As Figure 14 and Figure 15 shown, the specific process of the floating plug-in connection between the contact member and the adapter is described as follows:

[0092] When the axis of the contact member does not coincide with the axis of the watch band finger (the axis of the watch band finger coincides with the axis of the first support surface), and the horizontal distance between the axis of the contact member and the axis of the watch band finger is within a certain numerical range, the cylinder of the contact member extends into the first opening of the adapter. At this time, the contact member does not extend into the insertion opening, but contacts the connection between the watch band claw and the watch band plate. While the contact member continues to move downward, it drives the watch band finger to slide horizontally, and the cylinder of the contact member then extends into the insertion opening, and then squeezes the watch band claw to deform, passes through the second end of the watch band claw, and enters the accommodation cavity of the adapter, completing the floating plug-in process.

[0093] As Figure 16 shown, a temperature sensor (700) is provided on the contact member (120). Specifically, an installation groove is provided at the end of the contact member close to the circuit board, and the temperature sensor is installed in the installation groove. And in the assembled state, the end with the temperature sensor extends into the adapter. Such a setting enables the temperature sensor to be close to both the contact member and the adapter at the same time, and can timely sense the temperature changes of both.

[0094] In other alternative solutions, as Figure 17 shown, a temperature sensor (700) is provided on the base (210) of the adapter. Specifically, a temperature sensor is provided on a side support surface of the adapter. The temperature sensor can be installed outside the adapter as shown, and it can be understood that the temperature sensor can be installed inside the adapter. Such a setting can make full use of the accommodation cavity space of the adapter.

[0095] As Figure 18As shown in the figure, several adapters (200) are provided on the circuit board (300). A number of contacts (120) are inserted and mated with the several adapters (200) one by one. Each watch band finger (220) can slide in the corresponding base (210) along a direction perpendicular to the insertion direction of the contact (120). Specifically, the figure shows two connectors, one is a male connector and the other is a female connector. When the two connectors are inserted downward into the adapter at the same time, the two contacts move downward, and the watch band fingers in the corresponding adapters below are driven to slide horizontally as needed, so that the two contacts can be quickly inserted and mated with the watch band fingers respectively.

[0096] In other alternative solutions, a through hole (2136) for the contact (120) to pass through is provided at the bottom of the accommodation cavity (213). An elastic structure or an avoidance hole (320) corresponding to the position of the through hole (2136) is provided on the circuit board (300). By providing the elastic structure or the avoidance hole, the protruding contact can be buffered or avoided, preventing the contact from directly contacting the circuit board. Embodiment 2

[0097] As Figure 19 shown, the adapter (200) and the insulating housing (110) are located on the same side of the circuit board (300), that is, both the adapter and the insulating housing are located on the upper side of the circuit board. The adapter is fixed and electrically connected to the upper surface of the circuit board. The contact (120) protrudes from the insulating housing (110) to be inserted and connected to the adapter (200). The nut is screwed tightly with the thread on the insulating housing inside the inverter housing to fix the connector on the inverter housing. Embodiment 3

[0098] As Figure 20 shown, the adapter (200) and the insulating housing (110) are located on different sides of the circuit board (300), that is, the adapter is located below the circuit board and the insulating housing is located above the adapter. An avoidance hole (320) for the contact (120) to pass through is provided on the circuit board (300). The contact (120) passes through the avoidance hole (320) and is inserted and connected to the adapter (200). Such a setting can make full use of the space below the circuit board to install the adapter.

[0099] In other alternative solutions, a through hole (2136) for the contact (120) to pass through is provided at the bottom of the accommodation cavity (213). Embodiment 4

[0100] As Figure 21 and Figure 22As shown, the adapter (200) is provided with welding pins (2135). There are multiple welding pins (2135), which are evenly arranged on the bottom support surface at the bottom of the accommodation cavity (213). The adapter (200) is fixedly welded to the circuit board (300) through the welding pins (2135). The contact member (120) is located inside the insulating housing (110). The adapter (200) extends into the insulating housing (110) and is plugged into the contact member (120).

[0101] In other alternative solutions, such as Figure 23 As shown, the adapter (200) is fixed to the circuit board through the welding pins at the bottom. The contact member (120) extends out of the insulating housing (110) to be plugged into the adapter (200).

[0102] In other alternative solutions, the welding pins (2135) are arranged on the first support surface (211), and the adapter (200) is installed below the circuit board (300) through the welding pins (2135).

[0103] The above are only the preferred embodiments of the present invention, and do not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A connector (100) includes an insulating housing (110) and contacts (120) mounted within the insulating housing (110). The connector further includes an adapter (200) fixed to a circuit board (300), and the adapter (200) is electrically connected to the circuit board (300). It is characterized in that, On one side of the insulating housing (110) close to the circuit board (300), there is an installation cavity (111). One end of the contact member (120) is located in the installation cavity (111), and at least a part of the adapter (200) extends into the installation cavity (111) to be inserted and connected with the contact member (120).

2. The connector according to claim 1, characterized in that, The distance between the end of the contact member (120) close to the circuit board (300) and the circuit board (300) is not less than the distance between the bottom of the insulating housing (110) and the circuit board (300).

3. A connector according to claim 1, characterized in that, The insulating housing (110) overlaps with the adapter (200) axially, and the contact member (120) overlaps with the adapter (200) axially.

4. A connector according to claim 3, wherein, The ratio of the length of the overlapping part of the contact member (120) and the adapter (200) axially to the height of the adapter (200) ranges from 1 / 4 to 3 / 4.

5. A connector according to claim 1, wherein The projection of the insulating housing (110) on the circuit board (300) covers the projection of the adapter (200) on the circuit board (300).

6. The connector according to claim 1, characterized in that, The bottom of the insulating housing (110) is provided with positioning studs (112), and the circuit board (300) is provided with positioning holes (310) corresponding to the positioning studs.

7. The connector according to claim 6, characterized in that, The positioning stud (112) includes a first stud (1121) and a second stud (1122) arranged coaxially. The first stud (1121) is located on the side of the positioning stud (112) close to the circuit board (300). The first stud (1121) has a clearance fit with the positioning hole (310), and the diameter of the second stud (1122) is larger than the diameter of the positioning hole (310).

8. A connector according to claim 7, wherein The height of the second stud (1122) is less than the height of the adapter (200).

9. A connector according to claim 1, characterized in that, The bottom of the insulating housing (110) is provided with an elastic buffer structure.

10. A connector according to claim 1, characterized in that, A seal (400) is provided between the insulating housing (110) and the contact member (120). The seal (400) has an interference fit with both the insulating housing (110) and the contact member (120); or, the seal (400) is integrally injection-molded with the contact member (120) and then installed into the insulating housing (110), and the seal (400) has an interference fit with the insulating housing (110).

11. A connector according to any one of claims 1-10, characterized in that, The connector is used in an inverter, and the assembly direction of the insulating housing (110) and the inverter housing (500) is opposite to the insertion direction of the contact member (120) and the adapter (200).

12. A connector according to claim 11, characterized in that, The inverter housing (500) is provided with an installation hole (510). The insulating housing (110) penetrates through the installation hole (510) from the inner side to the outer side of the inverter and is fixed in cooperation with a nut (130) outside the inverter housing (500).

13. A connector according to claim 12, characterized in that, The insulating housing (110) includes a mounting boss (113) that abuts against the housing beside the mounting hole (510). A sealing gasket (600) is provided between the mounting boss (113) and the inner side surface of the inverter housing (500). The insulating housing (110) further includes a thread (114) disposed adjacent to the mounting boss (113), and the nut (130) is fixedly connected to the thread (114).

14. A connector according to claim 13, wherein, The insulating housing (110) is provided with a first anti-loosening protrusion (115), and the nut (130) is provided with a second anti-loosening protrusion (131). The second anti-loosening protrusion (131) is in alignment and cooperation with the first anti-loosening protrusion (115). The height of the first anti-loosening protrusion (115) is less than the height of the thread (114), and the height of the second anti-loosening protrusion (131) is greater than the height of the thread (114).

15. A connector according to claim 12, characterized in that, An assembly groove (132) for cooperating with an assembly tool is provided on a side of the nut (130) away from the mounting hole (510).

16. A connector according to any one of claims 1-10, characterized in that, The adapter (200) includes a base (210) and a watch band contact finger (220). The watch band contact finger (220) has an insertion opening (223) that is inserted and mated with the contact member (120). When the contact member (120) is inserted into the watch band contact finger (220), the watch band contact finger (220) can slide in the base (210) along a direction perpendicular to the insertion direction of the contact member (120).

17. A connector according to claim 16, characterized in that, The base (210) includes a first support surface (211) and a second support surface (212) that are arranged in parallel. The watch band contact finger (220) is slidably clamped between the first support surface (211) and the second support surface (212). A first opening (2111) corresponding to the insertion opening (223) is provided on the first support surface (211).

18. A connector according to claim 16, characterized in that, A temperature sensor (700) is provided on the contact member (120) or the base (210).

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