Board end connector, electric connector, electric equipment and vehicle

Abstract

A board end connector, an electric connector, electric equipment and a vehicle, the board end connector comprises a sheath, a terminal and an elastic sheet, the sheath is provided with a mounting cavity, the terminal is arranged in the mounting cavity, the elastic sheet is detachably connected in the mounting cavity, the elastic sheet and the terminal are arranged at an interval, and the elastic sheet is used for clamping the line end connector together with the terminal. According to the technical scheme of the invention, the elastic sheet and the terminal are arranged at an interval, and the elastic sheet is detachably connected with the sheath, so that the elastic sheet can be used as a standard component independent of the sheath and the terminal in the manufacturing and production process of the board end connector. When a producer manufactures the board end connector, the elastic sheets with high manufacturing cost can be produced on a large scale, and the structure of the sheath with low manufacturing cost can be redesigned. The redesigned sheath can be assembled with an elastic piece of a standard component, so that the board end connector capable of adapting to insertion pieces with different thicknesses is obtained, and the manufacturing cost of the board end connector is reduced.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and particularly to a board-end connector, an electrical connector, an electrical device, and a vehicle. Background Art

[0002] An electrical connector includes a board-end connector and a wire-end connector, and the board-end connector and the wire-end connector are respectively assembled on different electrical devices. When the electrical devices need to be connected, the wire-end connector can be inserted into the board-end connector, and the electrical connection between different electrical devices can be achieved.

[0003] The board-end connector includes terminals and elastic pieces. The terminals are used to contact the inserts of the wire-end connector to achieve current flow between the board-end connector and the wire-end connector; the elastic pieces are used to generate elastic deformation when the inserts of the wire-end connector extend between the terminals and the elastic pieces, so as to provide a forward force for the inserts to approach the terminals, and further ensure the close fit between the inserts and the terminals.

[0004] As the thickness of the inserts inserted into the board-end connector is different, the forward force required for the inserts to fit with the terminals is also different, and the forward force provided by the elastic pieces is mainly determined by the elastic pieces and the sheath structure. In the related art, the terminals, the sheath, and the elastic pieces are usually integrally provided, which also results in that for each type of board-end connector produced, the entire structure of the board-end connector needs to be redesigned, and the production cost of the board-end connector is high. Summary of the Utility Model

[0005] The purpose of this application is to provide a board-end connector, an electrical connector, an electrical device, and a vehicle, aiming to solve the problem of high reproduction cost of the board-end connector in the related art. To achieve the purpose of this application, in a first aspect, this application provides a board-end connector, which includes:

[0006] A sheath having an installation cavity;

[0007] Terminals disposed in the installation cavity; and

[0008] Elastic pieces detachably connected to the installation cavity, spaced apart from the terminals, and used to jointly clamp the wire-end connector with the terminals.

[0009] In a possible implementation, the installation cavity has an installation surface provided with a clamping groove;

[0010] The elastic piece includes a main body portion and a clamping portion connected to each other. The main body portion is disposed on the installation surface, and at least part of the clamping portion is disposed in the clamping groove.

[0011] In a possible implementation, the installation cavity is provided with a first limiting member, the first limiting member is connected to the installation surface, the first limiting member includes a first limiting surface, and the first limiting surface is in contact with a part of the main body portion to limit the elastic piece in the arrangement direction of the elastic piece and the installation surface.

[0012] In a possible implementation, the installation cavity has a first opening adapted for the insertion of the wire end connector;

[0013] The clamping portion includes a first end and a second end spaced apart in its own extending direction. The first end is connected to the main body portion, and the second end is adapted to be in contact with the wall surface of the clamping groove facing the first opening to limit the elastic piece in the insertion direction of the wire end connector.

[0014] In a possible implementation, the clamping portion is an elastically deformable member.

[0015] In a possible implementation, the first limiting member further includes a second limiting surface perpendicular to the insertion direction of the wire end connector. The second limiting surface intersects and is connected to the installation surface, the second limiting surface intersects and is connected to the first limiting surface, and the second limiting surface is adapted to be in contact with the end surface of the main body portion facing the first opening to limit the elastic piece in the extraction direction of the wire end connector.

[0016] In a possible implementation, the clamping portion extends straight, and the length of the clamping portion in its own extending direction is L1;

[0017] In the insertion direction of the wire end connector, the distance from the connection portion of the clamping portion and the main body portion to the end surface is L2;

[0018] In the insertion direction of the wire end connector, the distance from the wall surface to the second limiting surface is L, 1 < L: (L1 + L2) ≤ 1.1.

[0019] In a possible implementation, the clamping groove penetrates through the sheath in the extraction direction of the wire end connector.

[0020] In a possible implementation, the installation cavity is provided with a second limiting member, the second limiting member includes a third limiting surface, and the third limiting surface is in contact with a part of the main body portion to limit the elastic piece in the arrangement direction of the elastic piece and the installation surface.

[0021] In a possible implementation, the second limiting member further includes two fourth limiting surfaces oppositely arranged on both sides of the elastic piece, and the two fourth limiting surfaces, the elastic piece are arranged along a first direction, and the first direction is parallel to the mounting surface and forms a predetermined angle with the insertion direction of the wire-end connector.

[0022] In a possible implementation, the two fourth limiting surfaces reuse the side walls of the mounting cavity.

[0023] In a possible implementation, the elastic piece includes a body and an elastic part, and the body is in contact with the sheath;

[0024] One end of the elastic part is connected to the body, and the other end is spaced from the body.

[0025] In a possible implementation, the elastic part protrudes towards the terminal.

[0026] In a possible implementation, the elastic part includes a main elastic part and a contact piece, the main elastic part is connected to the body, and one end of the contact piece is connected to the main elastic part;

[0027] The main elastic part has a first protruding part protruding towards the terminal, the contact piece has a second protruding part protruding towards the terminal, and along the protruding direction of the first protruding part and the second protruding part, the second protruding part extends beyond the first protruding part.

[0028] In a possible implementation, the elastic piece further includes an auxiliary elastic part, the auxiliary elastic part is arranged between the elastic part and the body, and one end of the auxiliary elastic part is connected to the body.

[0029] In a possible implementation, a boss is provided on the side of the terminal facing the elastic piece.

[0030] In a possible implementation, the mounting cavity has a first opening adapted for the insertion of the wire-end connector;

[0031] A plurality of bosses are provided on the side of the terminal facing the elastic piece, the bosses have a first end portion and a second end portion arranged oppositely, and the first end portion is closer to the first opening than the second end portion;

[0032] The distances between the first end portions of adjacent bosses and the distances between the second end portions of adjacent bosses are set to be different.

[0033] In a possible implementation, the sheath includes a sheath body and an end cap, the mounting cavity penetrates through the sheath body and forms a first opening and a second opening, and the first opening is adapted for the insertion of the wire-end connector;

[0034] The end cap is detachably connected to the sheath body, and the end cap covers the second opening.

[0035] Second, the present application also provides an electrical connector, which includes:

[0036] A board - end connector; and

[0037] A wire - end connector that extends into the space between the terminal and the elastic piece from the first opening; the board - end connector includes:

[0038] A sheath having an installation cavity;

[0039] A terminal disposed in the installation cavity; and

[0040] An elastic piece detachably connected to the installation cavity, the elastic piece being spaced apart from the terminal, and the elastic piece being used to jointly clamp the wire - end connector with the terminal.

[0041] Third, the present application also provides an electrical device, which includes an electrical connector, and the electrical connector includes:

[0042] A board - end connector; and

[0043] A wire - end connector that extends into the space between the terminal and the elastic piece from the first opening; the board - end connector includes:

[0044] A sheath having an installation cavity;

[0045] A terminal disposed in the installation cavity; and

[0046] An elastic piece detachably connected to the installation cavity, the elastic piece being spaced apart from the terminal, and the elastic piece being used to jointly clamp the wire - end connector with the terminal.

[0047] Fourth, the present application also provides a vehicle, which includes an electrical device, the electrical device includes an electrical connector, and the electrical connector includes:

[0048] A board - end connector; and

[0049] A wire - end connector that extends into the space between the terminal and the elastic piece from the first opening; the board - end connector includes:

[0050] A sheath having an installation cavity;

[0051] A terminal disposed in the installation cavity; and

[0052] A shrapnel, which is detachably connected to the installation cavity, is arranged at an interval from the terminal, and is used to jointly clamp the wire-end connector with the terminal.

[0053] In the technical solution of the present application, by arranging the shrapnel at an interval from the terminal and detachably connecting it to the sheath, the shrapnel can be used as a standard part independent of the sheath and the terminal during the manufacturing and production process of the board-end connector. When manufacturing the board-end connector, the producer can mass-produce the shrapnel with a relatively high manufacturing cost, and redesign the structure of the sheath with a relatively low manufacturing cost. The redesigned sheath can be assembled with the standard shrapnel to obtain a board-end connector that can adapt to inserts of different thicknesses, reducing the manufacturing cost of the board-end connector. Description of the Drawings

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0055] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the electrical connector provided by the present application;

[0056] Figure 2 It is Figure 1 an exploded view of;

[0057] Figure 3 It is Figure 1 a three-dimensional structural schematic diagram of the wire harness assembly in;

[0058] Figure 4 It is Figure 1 an assembly schematic diagram of the wire-end connector and the board-end connector in;

[0059] Figure 5 It is Figure 4 an assembly schematic diagram of the terminal, the shrapnel and the insert in;

[0060] Figure 6 It is Figure 1 a sectional three-dimensional schematic diagram of the board-end connector in;

[0061] Figure 7 It is Figure 5 an assembly schematic diagram of the sheath and the terminal in;

[0062] Figure 8 It is Figure 2 a three-dimensional structural schematic diagram of the terminal in;

[0063] Figure 9 is Figure 3 A sectional perspective view of the board - end connector;

[0064] Figure 10 is Figure 9 An enlarged view at A;

[0065] Figure 11 is Figure 3 A sectional perspective view of the middle sheath;

[0066] Figure 12 is Figure 11 An enlarged view at B;

[0067] Figure 13 is Figure 5 A schematic view of the cooperation between the elastic piece and the first limiting member;

[0068] Figure 14 is Figure 5 A schematic view of the cooperation between the clamping portion of the elastic piece and the clamping groove;

[0069] Figure 15 is Figure 5 A schematic view of the cooperation between the elastic piece and the second limiting member;

[0070] Figure 16 is Figure 5 A three - dimensional structure schematic view of the elastic piece;

[0071] Figure 17 is Figure 16 A three - dimensional structure schematic view from another perspective.

[0072] Explanation of reference numerals:

[0073] 3000 - electrical connector;

[0074] 2000 - wire - end connector, 2100 - housing, 2200 - wire harness assembly, 2210 - cable, 2220 - insert piece;

[0075] 1000 - board - end connector;

[0076] 1 - sheath, 11 - sheath body, 111 - installation cavity, 112 - first opening, 113 - installation groove, 114 - installation surface, 1141 - clamping groove, 1412 - wall surface, 115 - first limiting member, 1151 - first limiting surface, 1152 - second limiting surface, 116 - second limiting member, 1161 - third limiting surface, 1162 - fourth limiting surface, 117 - second opening, 12 - end cover, 121 - thread structure, 122 - connection hole;

[0077] 2 - terminal, 21 - through hole, 22 - boss, 221 - first end, 222 - second end;

[0078] 3 - Shrapnel, 31 - Main body part, 311 - End face, 32 - Elastic part, 321 - Main elastic part, 3211 - First protruding part, 322 - Contact piece, 3221 - Second protruding part, 33 - Auxiliary elastic part, 34 - Clamping part, 341 - First end, 342 - Second end, 35 - Body;

[0079] 4 - Sealing ring. Detailed implementation mode

[0080] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0081] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0082] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the present application in the specification are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more of the related listed items.

[0083] Next, some embodiments of the present application will be described in detail in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0084] The present application proposes a vehicle, which can be a fuel vehicle, an electric vehicle, or a hybrid vehicle. The vehicle can be a sedan, a truck, or a forklift, and the present application does not limit this.

[0085] The vehicle includes a vehicle body and electrical equipment. The vehicle body serves as the support framework of the vehicle and is used to support and connect each assembly of the vehicle. The electrical equipment is provided on the vehicle body. The electrical equipment can be an instrument panel and a battery pack, or a motor and a motor controller, or a controller and a door control mechanism, and the present application does not limit this. The electrical equipment includes at least two electrical components and an electrical connector. The electrical components are used to perform the functions of the electrical equipment, and the electrical connector is used to electrically connect the electrical components.

[0086] Please refer to Figure 1 , the electrical connector 3000 includes a board - end connector 1000 (i.e., the female terminal 2 in the traditional sense) and a wire - end connector 2000 (i.e., the male terminal 2 in the traditional sense). The board - end connector 1000 and the wire - end connector 2000 are respectively disposed on different electrical components. For the convenience of description, the electrical component connected to the board - end connector 1000 is referred to as the first electrical component, and the electrical component connected to the wire - end connector 2000 is referred to as the second electrical component.

[0087] Please refer to Figure 2 , the wire - end connector 2000 includes a housing 2100 and a wire harness assembly 2200. The housing 2100 serves as the support structure of the wire - end connector 2000 and is used to support, connect, and insulate and protect each part connected to the wire end. The housing 2100 is formed with a wire - passing hole, and the wire harness assembly 2200 is passed through the wire - passing hole. The wire harness assembly 2200 is used to extend into the board - end connector 1000, thereby realizing the electrical connection between the first electrical component and the second electrical component.

[0088] Please refer to Figure 3 , the wire harness assembly 2200 includes a cable 2210 and a tab 2220. One end of the cable 22 + 10 is connected to the second electrical component, and the other end is connected to the tab 2220. The cable 2210 and the tab 2220 can be connected by crimping or by welding. When the cable 2210 and the tab 2220 are connected by welding, the cable 2210 and the tab 2220 can be connected by ultrasonic welding or by laser welding. This application does not limit this.

[0089] Please refer to Figure 4 , the tab 2220 can be inserted into the board - end connector 1000. The current of the second electrical component can reach the first electrical component through the cable 2210, the tab 2220, and the board - end connector 1000, thereby realizing the electrical connection between the second electrical component and the first electrical component. In an implementable embodiment of the present application, the tab 2220 is bent, so as to improve the structural strength of the tab 2220, optimize the force on the tab 2220, and improve the service life of the tab 2220.

[0090] Please refer to Figure 5, the board - end connector 1000 includes a sheath 1, terminals 2, and elastic pieces 3. The sheath 1 has an installation cavity 111. One side of the installation cavity 111 is provided with a first opening 112 suitable for the insertion of the insertion piece 2220. Both the terminals 2 and the elastic pieces 3 are arranged in the installation cavity 111. The sheath 1, as the main body of the board - end connector 1000, is used to support, connect, and provide insulation protection for each component assembly of the board - end connection. The terminals are used for electrical connection with the insertion piece 2220, and the elastic pieces are used to elastically deform when the insertion piece 2220 is inserted into the installation cavity 111 from the first opening 112, so as to provide a forward force for the insertion piece 2220 to approach the terminals, thereby ensuring the close fit between the insertion piece 2220 and the terminals.

[0091] As the thickness of the insertion piece 2220 inserted into the board - end connector 1000 is different, the forward force required for the insertion piece 2220 to fit with the terminals is also different. In the related art, the sheath 1, the terminals 2, and the elastic pieces 3 are usually integrally arranged. This also results in that for each type of board - end connector 1000 produced, the entire structure of the board - end connector 1000 needs to be redesigned, and the production cost of the board - end connector 1000 is high.

[0092] To solve the above problems, in this application, the elastic piece 3 of the board - end connector is detachably connected to the installation cavity 111 and is spaced from the terminals 2 also arranged in the installation cavity 111.

[0093] The technical solution of this application sets the elastic piece 3 and the terminals 2 at intervals and detachably connects them to the sheath 1, so that the elastic piece 3 can be used as a standard part independent of the sheath 1 and the terminals 2 during the manufacturing and production process of the board - end connector 1000. When producers manufacture the board - end connector 1000, they can mass - produce the elastic piece 3 with a relatively high production cost, and redesign the structure of the sheath 1 with a relatively low production cost. The redesigned sheath 1 can be assembled with the standard - part elastic piece 3 to obtain a board - end connector 1000 that can adapt to different - thickness insertion pieces 2220, reducing the manufacturing cost of the board - end connector 1000.

[0094] Hereinafter, the board - end connector 1000 provided in this application will be described in detail with reference to the accompanying drawings.

[0095] Please refer to Figure 6 and Figure 7 , the board - end connector 1000 includes a sheath 1. The sheath 1, as the structural framework of the board - end connector 1000, is used to support, connect, and provide insulation protection for each material component of the board - end connector 1000. The sheath 1 is made of an insulating material. The insulating material can be epoxy resin (EP), can be polycarbonate (PC), or can also be glass fiber - reinforced nylon (PA - F). This application does not limit this. The insulating material is used to block the current of the terminals 2, thereby reducing the impact of the current of the terminals 2 on the outside.

[0096] The sheath 1 is formed with an installation cavity 111 having a first opening 112 on one side, and the terminal 2 and the elastic piece 3 are arranged in the installation cavity 111. For the convenience of installing the terminal 2 and the elastic piece 3, in an implementable embodiment of the present application, the sheath 1 includes a sheath body 11 and an end cover 12. The installation cavity 111 penetrates through the sheath body 11, and a first opening 112 and a second opening 117 are formed on the sheath body 11. The first opening is adapted for the insertion of the wire end connector 2000, and the end cover 12 is covered on the second opening 117.

[0097] The end cover 12 is detachably connected to the sheath body 11. There are various detachable methods between the end cover 12 and the sheath body 11. The end cover 12 and the sheath body 11 can be detachably connected by threads, or can be detachably connected by a buckle and a slot. The present application does not limit this. During the assembly process of the elastic piece 3, the terminal 2 and the sheath 1, the end cover 12 can be separated from the sheath body 11 first, so as to leave space for the installation of the elastic piece 3 and the terminal 2 in the installation cavity 111 and reduce the installation difficulty of the elastic piece 3 and the terminal 2. After the elastic piece 3 and the terminal 2 are installed, the end cover 12 is connected to the sheath body 11, so as to prevent external moisture and dust from entering the installation cavity 111 from the second opening 117 and affecting the normal use of the terminal 2 and the elastic piece 3 in the safety cavity.

[0098] To improve the sealing performance of the connection between the sheath body 11 and the end cover 12, in an implementable embodiment of the present application, the board end connector 1000 further includes a sealing ring 4. The sealing ring 4 can be a C-shaped sealing ring 4, an O-shaped sealing ring 4, or a V-shaped sealing ring 4. The present application does not limit this. The sealing ring 4 is arranged between the sheath body 11 and the end cover 12. When the end cover 12 and the sheath body 11 are connected, the sealing ring 4 can undergo elastic deformation under the extrusion of the sheath body 11 and the end cover 12 and fill between the sheath body 11 and the end cover 12, thereby reducing the connection gap between the end cover 12 and the sheath body 11, improving the sealing performance between the end cover 12 and the sheath body 11, and reducing the possibility of external dust and moisture entering the installation cavity 111 from between the end cover 12 and the sheath body 11.

[0099] Please refer to Figure 7The board-side connector 1000 further includes a terminal 2, which is disposed within the mounting cavity 111. The terminal 2 can be fixed within the mounting cavity 111 by means of threads or other engaging structures. Considering that the threaded structure occupies a large portion of the aperture of the board-side connector 1000, in order to optimize the connection structure between the terminal 2 and the sheath 1, in one embodiment of the present application, in the sheath body 11, the mounting cavity 111 of the sheath body 11 is recessed toward the first opening 112 to form a mounting groove 113. The end of the terminal 2 adjacent to the first opening 112 extends into the mounting groove 113. In the end cover 12 part, a step is formed in the inner cavity of the end cover 12, and the end of the terminal 2 facing away from the first opening 112 passes through the second opening 117 and abuts against the step of the end cover 12. In this way, the terminal 2 is fixed by the structure of the sheath 1 itself, which reduces the space occupied by the connection structure of the terminal 2 and the sheath 1 on the board-end connector 1000, reduces the volume of the board-end connector 1000, and improves the space utilization rate of the board-end connector 1000 for electrical equipment.

[0100] Terminal 2 has a through-hole 21 at one end, and end cap 12 has a connection hole 122. Connection hole 122 has a threaded structure 121 within it. This threaded structure 121 can be a threaded portion formed on the inner wall of connection hole 122, or a nut or threaded bushing press-fitted or injection-molded into connection hole 122, though this application does not impose any restrictions thereto. The electrical connection bolt of the electrical device sequentially passes through the copper busbar of the first electrical device, through-hole 21, and threaded structure 121, thereby connecting terminal 2 to the copper busbar of the electrical device, thereby connecting terminal 2 to the first electrical device.

[0101] The other end of the terminal 2 is used to contact the plug 2220 inserted from the first opening 112, thereby achieving electrical connection between the first electrical device and the second electrical device. The material of the terminal 2 can be aluminum, iron, copper or other conductive materials, and this application does not limit this.

[0102] Please refer to Figure 8, to improve the electrical conductivity of terminal 2, in an implementable embodiment of the present application, a boss 22 is provided on the side of terminal 2 facing the elastic piece 3, and terminal 2 contacts the insertion piece 2220 through the boss 22. With such a setting, on the one hand, when the insertion piece 2220 and terminal 2 are in face-to-face contact, since the contact area between terminal 2 and insertion piece 2220 is relatively large, the contact pressure is difficult to be evenly distributed between the insertion piece 2220 and terminal 2, which may lead to inconsistent contact effects between terminals 2, thus affecting the current conduction effect between terminal 2 and insertion piece 2220. The setting of the boss 22 can reduce the contact area between terminal 2 and insertion piece 2220, making the insertion and extraction between terminal 2 and insertion piece 2220 smoother. At the same time, it improves the consistency of the contact between terminal 2 and insertion piece 2220 and enhances the current conduction effect between terminal 2 and insertion piece 2220. On the other hand, due to processing errors, when terminal 2 and insertion piece 2220 are in face-to-face contact, terminal 2 and insertion piece 2220 may only be connected to each other through several contact points. The setting of the boss 22 can reduce the contact area between terminal 2 and insertion piece 2220, making it easier for terminal 2 and insertion piece 2220 to fit together, with more sufficient contact, thus improving the current guiding effect between terminal 2 and insertion piece 2220.

[0103] The number of bosses 22 can be set to one or multiple, and the present application does not limit this. It can be understood that if the extending direction of the boss 22 is the same as the insertion and extraction direction of the insertion piece 2220, during multiple insertions and extractions of the insertion piece 2220, its contact surface will repeatedly rub along the extending direction of the boss 22, which may lead to the formation of narrow grooves along its insertion and extraction direction on the contact surface of the insertion piece 2220, thus affecting the contact effect between the insertion piece 2220 and the boss 22. To solve the above problems, in an implementable embodiment of the present application, the boss 22 is set to be multiple, and the boss 22 has a first end 221 and a second end 222 arranged oppositely. The first end 221 is closer to the first opening 112 than the second end 222. In this embodiment, the distance between the first ends 221 of adjacent bosses 22 and the distance between the second ends 222 of adjacent bosses 22 are set to be different. In this way, it is ensured that the extending direction of the boss 22 is set at an angle to the insertion and extraction direction of the insertion piece 2220, so that the contact friction band between the insertion piece 2220 and a single boss 22 is wider during insertion and extraction, thereby reducing the wear of the boss 22 on the insertion piece 2220 or preventing the insertion piece 2220 from being worn out with narrow grooves, which affects the contact effect between the insertion piece 2220 and the boss 22, and prolonging the service life of the insertion piece and the terminal. On the other hand, when the extending direction of the boss 22 is set at an angle to the insertion direction of the insertion piece 2220, it can also effectively increase the contact length between the boss 22 and the insertion piece 2220 when the insertion piece 2220 is inserted on the limited area of the terminal, increase the contact area between the insertion piece 2220 and the boss 22, improve the contact effect between the terminal and the insertion piece 2220, and enhance the current guiding effect between terminal 2 and insertion piece 2220.

[0104] Please refer to Figure 9 , the board-end connector 1000 further includes a spring piece 3, which is detachably disposed in the installation cavity 111 and is spaced apart from the terminal 2. With this arrangement, on the one hand, during the manufacturing and production process of the board-end connector 1000, the spring piece 3 can be used as a standard part independent of the sheath 1 and the terminal 2. When manufacturing the board-end connector 1000, the producer can mass-produce the spring piece 3 with a relatively high manufacturing cost, and redesign the structure of the sheath 1 with a relatively low manufacturing cost. The redesigned sheath 1 can be assembled with the standard spring piece 3 to obtain a board-end connector 1000 that can adapt to different thicknesses of the insertion piece 2220, reducing the manufacturing cost of the board-end connector 1000.

[0105] On the other hand, in the related art, the current of the insertion piece 2220 usually needs to flow through the spring piece 3 to the terminal 2. In this application, the spring piece 3 is only used to provide a positive force that enables the insertion piece 2220 and the terminal 2 to be closely attached, and no longer needs to bear the overcurrent function. In this way, the assembly difficulty of the spring piece 3 and the terminal 2 is reduced, and the material selection difficulty of the spring piece 3 is reduced. No longer bearing the current conduction function also allows the material of the spring piece 3 to choose a material with relatively poor electrical conductivity but better elastic performance and better fatigue resistance as the manufacturing material. In this way, on the one hand, the material selection cost and the process control cost of the spring piece 3 are reduced, and on the other hand, the stability of the positive force provided by the spring piece 3 is improved, the fitting effect between the insertion piece 2220 and the terminal 2 is improved, and the current conduction effect and service life of the board-end connector 1000 are improved.

[0106] At the same time, since the spring piece 3 no longer bears the overcurrent function, the contact points between the spring piece 3 and the insertion piece 2220 can be appropriately reduced, and the abutting force of the spring piece 3 on the insertion piece 2220 can be correspondingly reduced. In this way, the insertion and extraction resistance of the insertion piece 2220 in the board-end connector 1000 is reduced, the insertion and connection difficulty between the wire-end connector 2000 and the board-end connector 1000 is reduced, and the electrical connection efficiency between the first electrical device and the second electrical device is improved.

[0107] The spring piece 3 can be detachably connected to the installation cavity 111 by means of threaded connection, or by other means. Please refer to Figure 8 and Figure 9, in an implementable embodiment of the present application, the installation cavity 111 has an installation surface 114 and a clamping groove 1141, and the notch of the clamping groove 1141 is provided on the installation surface 114. To reduce the manufacturing cost of the sheath 1, in an implementable embodiment of the present application, the clamping groove 1141 penetrates through the sheath 1 in the pulling-out direction of the line-end connector 2000. When the sheath 1 is formed by machining, the penetration of the clamping groove 1141 can enable the tool of the machining equipment to form the clamping groove 1141 outside the installation cavity 111, thereby increasing the movable space of the tool of the machining equipment and reducing the forming difficulty of the clamping groove 1141. When the sheath 1 is formed by injection molding, the penetration of the clamping groove 1141 can make the material flow more smoothly during the injection molding process, reduce the resistance and pressure changes during the injection molding process, and the simplified mold structure and injection molding process also contribute to improving the production efficiency and product qualification rate of the injection molding machine and reducing the forming cost of the sheath 1.

[0108] The elastic piece 3 includes a connected main body part 31 and a clamping part 34. The main body part 31 is attached to the installation surface 114, and the clamping part 34 is at least partially arranged in the clamping groove 1141. In this way, the elastic piece 3 is detachably connected to the installation cavity 111. Compared with other detachable fixing methods, the method of the elastic piece being clamped in the clamping groove through the clamping part has a simpler installation method and higher assembly efficiency. On the other hand, the arrangement of the clamping part 34 and the clamping groove 1141 can effectively reduce the use of third-party fixing parts, reduce the aperture occupation of the third-party fixing parts on the board-end connector 1000, reduce the volume of the board-end connector 1000, reduce the space occupation of the board-end connector 1000 on the electrical equipment, reduce the volume of the board-end connector 1000, and improve the space utilization rate of the board-end connector 1000 on the electrical equipment.

[0109] There are various ways for the clamping part 34 to cooperate with the clamping groove 1141 to achieve clamping. In an implementable embodiment of the present application, the clamping part 34 includes a first end 341 and a second end 342 that are spaced apart in its own extending direction. The first end 341 is connected to the main body part 31, and the second end 342 is adapted to contact the wall surface 1142 of the clamping groove 1141 facing the first opening 112 to limit the elastic piece 3 in the insertion direction of the line-end connector 2000. In this way, the movement of the elastic piece 3 in the insertion direction of the line-end connector 2000 is restricted, thereby reducing the possibility of the elastic piece 3 shaking when the line-end connector 2000 is inserted into the installation cavity 111 from the first opening 112 and improving the contact stability between the elastic piece 3 and the line-end connector 2000.

[0110] Please refer to Figures 10 to 13, to improve the stability of the elastic piece 3 disposed in the installation cavity 111, in an implementable embodiment of the present application, the installation cavity 111 is further provided with a first limiting member 115. The first limiting member 115 includes a first limiting surface 1151, and the first limiting surface 1151 is in contact with a part of the main body portion 31 to limit the elastic piece 3 in the arrangement direction of the elastic piece 3 and the installation surface 114 (i.e., the illustrated Z direction). Thus, the movement of the elastic piece 3 in the arrangement direction of the elastic piece 3 and the installation surface 114 is restricted, thereby improving the stability of the elastic piece 3 providing a positive force to the wire-end connector 2000. The first limiting surface 1151 cooperates with the clamping groove 1141 to stably clamp the elastic piece 3 in the installation cavity 111 through the clamping portion 34, improving the stability of the connection between the wire-end connector 2000 and the terminal and the current-carrying effect of the wire-end connector 2000 and the terminal.

[0111] In an implementable embodiment of the present application, the first limiting member 115 further includes a second limiting surface 1152 perpendicular to the insertion direction of the wire-end connector 2000. The second limiting surface 1152 intersects and is connected to the installation surface 114, and the second limiting surface 1152 intersects and is connected to the first limiting surface 1151. The second limiting surface 1152 is adapted to be in contact with the end surface 311 of the main body portion 31 facing the first opening 112 to limit the elastic piece 3 in the pulling-out direction of the wire-end connector 2000. In this way, when the wire-end connector 2000 is pulled out of the installation cavity 111, the possibility of the clamping portion 34 of the elastic piece 3 disengaging from the clamping groove 1141 is reduced, and the stability of the elastic piece 3 disposed in the installation cavity 111 is improved.

[0112] In an implementable embodiment of the present application, to improve the integration degree, reduce the number of parts, and lower the cost, the first limiting member 115 is integrally formed in the installation cavity 111. To facilitate the installation and disassembly of the elastic piece 3, the clamping portion 34 is an elastically deformable member. The elastically deformable member can be an elastic metal sheet, and the present application does not limit this. The setting of the elastically deformable member can reduce the installation difficulty of the clamping portion 34 in the clamping groove 1141 and improve the installation efficiency of the elastic piece 3. Specifically, during installation, the elastic piece 3 enters from the second opening, the main body portion 31 is attached to the installation surface 114, and the clamping portion 34 is also forced to deform and adhere to the installation surface 114. As the elastic piece 3 is pushed in the direction of the first opening 112, a part of the main body portion 31 contacts the first limiting surface 1151, and the end surface of the main body portion 31 contacts the second limiting surface 1152. At the same time, the clamping portion 34 moves to the notch of the clamping groove 1141, and the clamping portion 34 resumes elastic deformation and extends into the clamping groove 1141.

[0113] During disassembly, the auxiliary tool can extend into the clamping groove 1141 and lift the clamping portion 34, so that the clamping portion 34 is above the notch of the clamping groove 1141. At the same time, the elastic piece 3 is pulled in the opposite direction of installation to complete the disassembly. In this way, the installation difficulty of the clamping portion 34 in the clamping groove 1141 is reduced, and the installation efficiency of the elastic piece 3 is improved. In addition, the elastic material setting of the clamping portion 34 can also absorb the impact and vibration during the installation process to a certain extent, further protecting the elastic piece 3 and its surrounding components and extending the service life.

[0114] Please refer to Figure 14 , to further reduce the installation difficulty of the elastic piece 3 in the installation cavity 111, in another feasible embodiment of the present application, the clamping portion 34 extends straight, and the clamping portion 34 satisfies the relational expression: 1 < L:(L1 + L2) ≤ 1.1. Wherein, L1 is the length of the clamping portion 34 along its own extension direction. L2 is the distance from the connection between the clamping portion 34 and the main body portion 31 to the end face 311 in the insertion direction of the line-end connector 2000. L is the distance from the wall surface 1142 to the second limiting surface 1152 in the insertion direction of the line-end connector 2000, and L:(L1 + L2) is the ratio of L to the sum of L1 and L2. 1 < L:(L1 + L2) ≤ 1.1 can ensure that the value of L is slightly larger than the sum of L1 + L2, so that when the elastic piece 3 is installed, the clamping portion 34 can relatively easily pass through elastic deformation and be clamped into the clamping groove 1141, thereby reducing the installation difficulty of the elastic piece 3 and improving the installation efficiency of the elastic piece 3. At the same time, the value of L being slightly larger than the sum of L1 + L2 can also ensure that when the elastic piece 3 is disassembled, the clamping portion 34 of the elastic piece 3 can be smoothly bounced in the clamping groove 1141 and be higher than the notch of the clamping groove 1141, reducing the disassembly difficulty of the elastic piece 3 and improving the disassembly efficiency of the elastic piece 3.

[0115] At the same time, in terms of tolerance fit, this embodiment adopts a basic shaft system fit, that is, when the board-end connector 1000 is produced and manufactured, the producer only adjusts the relevant dimension L of the sheath 1 (that is, when designing the dimensional tolerance, the producer only sets L to be slightly larger than L1 + L2, rather than L1 + L2 being less than L), so as to adjust the fit tolerance between the sheath 1 and the elastic piece 3 to make the sheath 1 and the elastic piece 3 meet the assembly requirements, without the need to redesign the elastic piece 3, thus ensuring the possibility of producing the elastic piece 3 as a standard part and reducing the production cost of the board-end connector 1000.

[0116] Please refer to Figure 10 、 Figure 11 and Figure 15, To further improve the stability of the elastic piece 3 disposed in the installation cavity 111, in an implementable embodiment of the present application, the installation cavity 111 is provided with a second limiting member 116. The second limiting member 116 includes a third limiting surface 1161 which is in contact with a part of the main body portion 31 to limit the elastic piece 3 in the arrangement direction of the elastic piece 3 and the installation surface 114. Thus, in cooperation with the first limiting surface 1151, the movement of the elastic piece 3 in the arrangement direction of the elastic piece 3 and the installation surface 114 is further restricted, thereby improving the stability of the elastic piece 3 providing a positive force to the wire-end connector 2000, improving the stability of the connection between the wire-end connector 2000 and the terminal, and improving the current-carrying effect of the wire-end connector 2000 and the terminal.

[0117] The second limiting member 116 further includes two fourth limiting surfaces 1162 oppositely disposed on both sides of the elastic piece 3. The two fourth limiting surfaces 1162 and the elastic piece 3 are arranged along a first direction (illustrated as the Y direction in the figure). The first direction is parallel to the installation surface 114 and forms a predetermined angle with the insertion direction (illustrated as the X direction in the figure) of the wire-end connector 2000. Thus, the position movement of the elastic piece 3 in the first direction is restricted, and the stability of the elastic piece 3 installed in the installation cavity 111 is improved. It should be noted that the predetermined angle formed by the first direction and the insertion direction of the wire-end connector 2000 can be 30°, can be 40°, or can also be 60°. The present application does not limit this. Considering the convenience of manufacturing the two fourth limiting surfaces 1162 and their symmetry and aesthetics in the installation cavity 111, in an implementable embodiment of the present application, the predetermined angle is 90°.

[0118] In an implementable embodiment of the present application, the two fourth limiting surfaces 1162 reuse the side walls of the installation cavity 111. Thus, the spatial structure of the installation cavity 111 is optimized, and the manufacturing cost of the sheath 1 is reduced. At the same time, due to the close fit between the side walls and the elastic piece 3, the resistance ability of the elastic piece 3 when subjected to an external force is further enhanced, thereby improving the reliability and durability of the connection between the wire-end connector 2000 and the terminal.

[0119] Please refer to Figure 16 and Figure 17, the elastic piece 3 further includes an elastic part 32 and a body 35. The elastic part 32 and the body 35 constitute the main body part 31 of the elastic piece. The body 35 is in contact with the wall surface of the sheath 1 and is connected to the clamping part 34. One end of the elastic part 32 is connected to the body 35, and the other end is spaced from the body 35. When the insertion piece 2220 is inserted between the elastic piece 3 and the terminal 2 from the first opening 112, the elastic part 32 will deform in the direction away from the terminal 2 under the pushing of the insertion piece 2220, and the elastic part 32 itself will generate a positive pushing force in the direction opposite to the deformation direction, so as to push the insertion piece 2220 into contact with the terminal 2, improving the connection stability between the insertion piece 2220 and the terminal 2. At the same time, the arrangement of the body and the elastic part 32 of the elastic piece 3 also enables the elastic piece 3 to be integrally formed by stamping and bending, etc., reducing the processing cost of the elastic piece 3 and improving the assembly efficiency of the elastic piece 3.

[0120] The elastic piece can also adopt other structures. In other feasible embodiments of the present application, the elastic piece includes a spring and a pushing piece. One end of the spring is connected to the sheath, and the other end is connected to the pushing piece. When the insertion piece is inserted between the elastic piece and the terminal from the first opening 112, the pushing piece can move in the direction away from the terminal under the pushing of the insertion piece and compress the spring. The spring is compressed and at the same time generates a positive pushing force in the direction opposite to the compression direction, and then pushes the insertion piece into contact with the terminal, improving the connection stability between the insertion piece and the terminal.

[0121] The elastic part 32 protrudes towards the terminal 2. With such an arrangement, on the one hand, the force-bearing structure of the elastic part 32 can be optimized, the fatigue resistance of the elastic part 32 can be improved, and the service life of the elastic part 32 can be extended. On the other hand, the protrusion of the elastic part 32 can enable a smooth curved contact surface to be formed between the elastic part 32 and the insertion piece 2220 when they are in contact, so that the positive pushing force transmitted by the elastic part to the insertion piece 2220 is more evenly distributed, thereby improving the contact consistency between the terminal 2 and the insertion piece 2220 and the current conduction effect between the terminal 2 and the insertion piece 2220.

[0122] In an implementable embodiment of the present application, the elastic part 32 includes a main elastic part 321 and a contact piece 322. The main elastic part 321 is connected to the body 35. One end of the contact piece 322 is connected to the main elastic part 321, and the other end is freely arranged. When the insertion piece 2220 is inserted into the installation cavity 111 from the first opening 112 and contacts the elastic piece 3, the insertion piece 2220 will first contact the free end of the contact piece 322, thereby reducing the resistance of the elastic piece 3 on the insertion piece 2220 at the beginning of inserting into the installation cavity 111 and improving the smoothness of the insertion piece 2220 inserted into the installation cavity 111. To improve the pushing effect of the elastic piece 3 on the insertion piece 2220, in this embodiment, the main elastic part 321 has a first convex part 3211 protruding towards the terminal 2, and the contact piece 322 has a second convex part 3221 protruding towards the terminal 2. Along the protruding directions of the first convex part 3211 and the second convex part 3221, the second convex part 3221 exceeds the first convex part 3211. In this way, a triangular abutting structure is formed on the plane of the insertion piece 2220 to improve the stability of the elastic part 32 abutting against the insertion piece 2220.

[0123] The elastic piece 3 further includes an auxiliary elastic part 33. The auxiliary elastic part 33 is arranged on the side of the elastic part 32 facing the body 35. One end of the auxiliary elastic part 33 is connected to the body 35, and the other end extends towards the elastic part 32. When the elastic part 32 moves downward under the action of the insertion piece 2220, the end of the auxiliary elastic part 33 extending towards the elastic part 32 can abut against the side of the elastic part 32 facing the body 35, and then form a support for the elastic part 32. In this way, to improve the pushing effect of the elastic part 32 on the insertion piece 2220, increase the contact area between the insertion piece 2220 and the terminal 2, and improve the stability of the current transfer between the insertion piece 2220 and the terminal 2.

[0124] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship in the drawings, and is only for the convenience of describing the present application 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 cannot be understood as a limitation to the present application.

[0125] The above-disclosed is only a preferred embodiment of the present application. Of course, the scope of rights of the present application cannot be limited by this. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A board-end connector, characterized in that, Comprising: A sheath having a mounting cavity; A terminal disposed in the mounting cavity; And A spring piece detachably connected to the mounting cavity, the spring piece being spaced from the terminal, and the spring piece being adapted to jointly clamp a wire-end connector with the terminal.

2. The board-end connector according to claim 1, wherein, The mounting cavity has a mounting surface and a clamping groove, and the notch of the clamping groove is opened on the mounting surface; The spring piece includes a main body portion and a clamping portion connected to each other. The main body portion is attached to the mounting surface, and at least a part of the clamping portion is disposed in the clamping groove.

3. The board-end connector according to claim 2, wherein, The mounting cavity is provided with a first limiting member connected to the mounting surface. The first limiting member includes a first limiting surface that contacts a part of the main body portion to limit the spring piece in the arrangement direction of the spring piece and the mounting surface.

4. The board-end connector according to claim 3, characterized in that, The mounting cavity has a first opening adapted for the insertion of the wire-end connector; The clamping portion includes a first end and a second end spaced from each other in its own extending direction. The first end is connected to the main body portion, and the second end is adapted to contact the wall surface of the clamping groove facing the first opening to limit the spring piece in the insertion direction of the wire-end connector.

5. The board-end connector according to claim 4, wherein The clamping portion is an elastically deformable member.

6. The board end connector according to any one of claims 4 or 5, characterized in that The first limiting member further includes a second limiting surface perpendicular to the insertion direction of the wire-end connector. The second limiting surface intersects and is connected to the mounting surface, and the second limiting surface intersects and is connected to the first limiting surface. The second limiting surface is adapted to contact the end surface of the main body portion facing the first opening to limit the spring piece in the extraction direction of the wire-end connector.

7. The board-end connector according to claim 6, characterized in that, The clamping portion extends straight, and the length of the clamping portion in its own extending direction is L1; In the insertion direction of the wire-end connector, the distance from the connection portion of the clamping portion and the main body portion to the end surface is L2; In the insertion direction of the wire-end connector, the distance from the wall surface to the second limiting surface is L, and 1 < L: (L1 + L2) ≤ 1.

1.

8. The board-end connector according to claim 2, wherein The clamping groove penetrates the sheath in the extraction direction of the wire-end connector.

9. The board-end connector according to claim 2, wherein The mounting cavity is provided with a second limiting member. The second limiting member includes a third limiting surface that contacts a part of the main body portion to limit the spring piece in the arrangement direction of the spring piece and the mounting surface.

10. The board-end connector according to claim 9, characterized in that, The second limiting member further includes two fourth limiting surfaces oppositely disposed on both sides of the spring piece. The two fourth limiting surfaces, the spring piece are arranged in a first direction, and the first direction is parallel to the mounting surface and forms a predetermined angle with the insertion direction of the wire-end connector.

11. The board-end connector according to claim 10, characterized in that, The two fourth limiting surfaces reuse the side wall of the mounting cavity.

12. The board-end connector according to claim 1, characterized in that, The spring piece includes a body and an elastic portion, and the body contacts the sheath; One end of the elastic portion is connected to the body, and the other end is spaced from the body.

13. The board-end connector according to claim 12, characterized in that, The elastic portion protrudes toward the terminal.

14. The board-end connector according to claim 12, characterized in that, The elastic portion includes a main elastic portion and a contact piece. The main elastic portion is connected to the body, and one end of the contact piece is connected to the main elastic portion; The main elastic part has a first protruding part protruding towards the terminal, and the contact piece has a second protruding part protruding towards the terminal. Along the protruding direction of the first protruding part and the second protruding part, the second protruding part extends beyond the first protruding part.

15. The board end connector according to claim 12, characterized in that, The elastic piece further includes an auxiliary elastic part, the auxiliary elastic part is arranged between the elastic part and the body, and one end of the auxiliary elastic part is connected to the body.

16. The board-end connector according to claim 1, characterized in that, A boss is provided on the side of the terminal facing the elastic piece.

17. The board-end connector according to claim 16, characterized in that, The installation cavity has a first opening adapted for the insertion of the wire-end connector; A plurality of bosses are provided on the side of the terminal facing the elastic piece. The boss has a first end portion and a second end portion arranged oppositely, and the first end portion is closer to the first opening than the second end portion; The distances between the first end portions of adjacent bosses are set to be different from the distances between the second end portions of adjacent bosses.

18. The board-end connector according to claim 1, wherein The sheath includes a sheath body and an end cap. The installation cavity penetrates through the sheath body and forms a first opening and a second opening. The first opening is adapted for the insertion of the wire-end connector; The end cap is detachably connected to the sheath body, and the end cap covers the second opening.

19. An electrical connector, characterized in that, Comprising: The board-end connector according to any one of claims 1 to 18, wherein the installation cavity has a first opening; and A wire-end connector, the wire-end connector extends into the space between the terminal and the elastic piece (3) from the first opening.

20. An electrical device, characterized in that, Comprising the electrical connector according to claim 19.

21. A vehicle, characterized in that, Comprising the electrical equipment according to claim 20.

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