Electrical connection device

Abstract

An electric connection device comprises a shell, a base, a conductive contact piece, an elastic piece and a clamping piece. The housing has a bottom, a top, and a side connecting the bottom and the top. The bottom has an opening configured to allow the connection terminal to pass therethrough. The base is coupled to the shell and provided with a butt joint part and a connecting part which are connected. The butt joint part is arranged in the shell and is provided with a butt joint hole. The butt joint hole is communicated with an opening in the bottom of the shell. The conductive contact piece is located in the butt joint hole of the base. The elastic piece is located between the butt joint portion of the base and the side portion of the shell in the length direction of the base. The clamping piece is coupled to the shell and is configured to be embedded into the groove of the electric connection terminal. The electric connection device is convenient for butt joint and assembly, and can reduce time and manpower consumed by installation and maintenance.

Description

Technical Field

[0001] The present invention relates to an electrical connection device, and in particular to an electrical connection device for transmitting high current. Background Art

[0002] Large-scale power systems, such as electric vehicle charging systems, often require numerous high-current electrical connectors to electrically connect wires and cables to the electrical terminals on printed circuit boards (PCBs) for power transmission. To allow users to flexibly adjust the PCB layout based on specific application requirements and reduce installation and maintenance costs, an electrical connector that facilitates mating and disassembly is needed. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide an electrical connection device that can solve the above-mentioned problem.

[0004] One aspect of the present invention relates to an electrical connection device including a housing, a base, a conductive contact, an elastic member, and a snap-fit ​​member. The housing has a bottom, a top, and a side connecting the bottom and the top. The bottom has an opening configured to allow an electrical connection terminal to pass through. The base is coupled to the housing and has a docking portion and a connecting portion connected thereto. The docking portion is in the housing and has a docking hole. The docking hole is connected to the opening at the bottom of the housing. The conductive contact is located in the docking hole of the base. The elastic member is located between the docking portion of the base and the side of the housing along the length direction of the base. The snap-fit ​​member is coupled to the housing and configured to fit into a groove of the electrical connection terminal.

[0005] In some embodiments, the engaging member is located on a side of the docking portion away from the elastic member.

[0006] In some embodiments, the engaging member is located above the base.

[0007] In some embodiments, the connecting seat is located above the engaging member.

[0008] In some embodiments, the elastic member is connected to the engaging member.

[0009] In some embodiments, the side of the housing has a protrusion protruding toward the base, and the protrusion is configured to abut against the elastic member when the engaging member is inserted into the groove of the electrical connection terminal.

[0010] In some embodiments, the elastic member has a locking hole, and the base has a locking portion coupled to the locking hole of the elastic member.

[0011] In some embodiments, the elastic member is configured to compress along the length direction when the engaging member is inserted into the recess of the electrical connection terminal.

[0012] In some embodiments, the electrical connection terminal has a length dimension smaller than the length dimension of the opening of the housing.

[0013] In some embodiments, the connecting portion is configured for the cable to enter and electrically connect along the length direction.

[0014] Another aspect of the present application is directed to an electrical connection device including a housing, a base, a conductive contact, and an engaging member. The housing has a bottom, a top, and a side connecting the bottom and the top. The bottom has an opening configured for an electrical connection terminal to pass through. The base is movably coupled to the housing along a length direction. The base has a mating hole. The mating hole is in communication with the opening of the bottom of the housing. The conductive contact is located in the mating hole of the base. The engaging member is coupled to the housing and is configured to engage the electrical connection terminal when the electrical connection terminal is inserted into the mating hole.

[0015] In some embodiments, the base includes a mating portion and a connecting portion. The mating portion is located within the housing and is connected to the connecting portion along the length direction.

[0016] In some embodiments, the electrical connection device further includes an elastic member. The elastic member is located between the mating portion and the side.

[0017] In some embodiments, the elastic member connects the engaging member. The side has a protrusion. The protrusion is configured to abut against the elastic member.

[0018] In some embodiments, the opening has a length dimension greater than a width dimension perpendicular to the length direction.

[0019] In some embodiments, the engaging member partially overlaps the opening in a projection direction of a central axis of the mating hole.

[0020] In summary, in the electrical connection device of some embodiments of the present application, the elastic member is disposed between the base and the housing along the length direction of the base, and the engaging member is disposed in the housing to be inserted into the recess of the electrical connection terminal, so that the locking and unlocking between the electrical connection device and the electrical connection terminal can be achieved by the movement of the base relative to the electrical connection terminal along the length direction of the base through the housing. Compared with the conventional electrical connection device, the present application is more convenient for mating and assembly, and can reduce the time and labor cost for installation and maintenance, thereby reducing the cost.

[0021] These and other aspects of the present application will become apparent from the following description of the preferred embodiment with reference to the accompanying drawings, whose changes and modifications can be made without departing from the spirit and scope of the novel concept of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings illustrate one or more embodiments of the application and together with the written description serve to explain the principles of the application. In all the drawings, like reference characters signify like or similar components throughout the several views, where:

[0023] Figure 1 exploded view of an electrical connection device according to some embodiments of the application;

[0024] Figure 2 perspective view of a first part and a snap-in element of an electrical connection device according to some embodiments of the application;

[0025] Figure 3A , Figure 3B , Figure 3C and Figure 3D cross-sectional view of an electrical connection device and an electrical connection terminal according to some embodiments of the application;

[0026] Figure 4 exploded view of an electrical connection device according to some embodiments of the application;

[0027] Figure 5 perspective view of a second part and a snap-in element of an electrical connection device according to some embodiments of the application;

[0028] Figure 6A and Figure 6B cross-sectional view of an electrical connection device and an electrical connection terminal according to some embodiments of the application;

[0029] Figure 7 exploded view of an electrical connection device according to further embodiments of the application;

[0030] Figure 8 perspective view of a first part and a spring of an electrical connection device according to further embodiments of the application;

[0031] Figure 9A and Figure 9B cross-sectional view of an electrical connection device and an electrical connection terminal according to further embodiments of the application.

[0032] Reference signs:

[0033] 10, 10A, 10B: electrical connection device

[0034] 20, 30: electrical connection terminal

[0035] 110: housing

[0036] 112: first part

[0037] 112a: protrusion

[0038] 114: second portion

[0039] 120, 160b: engaging member

[0040] 130: base

[0041] 130a: abutting portion

[0042] 130b: connecting portion

[0043] 130c: engaging portion

[0044] 140, 160a: elastic member

[0045] 150: conductive contact member

[0046] 160: spring sheet

[0047] BP: bottom

[0048] D1, D2, D3: direction

[0049] EH: engaging hole

[0050] L1, L2, L3, L4: length

[0051] N: recess

[0052] OP: opening

[0053] S1, S1', S2, S3, S4: size

[0054] SP: side

[0055] TH: abutting hole

[0056] TP: top DETAILED DESCRIPTION

[0057] The following summary will be more fully described herein by reference to the drawings and the data, some exemplary embodiments of which are set forth in the drawings. The present application can be embodied in different forms and should not be limited by the embodiments mentioned below. However, these embodiments are provided to help more complete understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0058] In the drawings, the thicknesses of layers, films, panels, regions, etc., can be exaggerated for clarity. Like reference numerals can be used throughout the description for like elements and features. It will be understood that when a component such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another component, it can be directly on or connected to the other component or intervening components can also be present. In contrast, when a component is referred to as being "directly on" or "directly connected to" another component, there are no intervening components present. As used herein, the term "connected" can mean physically and / or electrically connected. Further, "electrically connected" or "coupled" can be used to indicate that there are other components between two components.

[0059] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms, including "at least one," unless the content clearly indicates otherwise. "Or" means "and / or." As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or groups thereof.

[0060] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe one element's or component's relationship to another element or component as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as "below" other elements or "below" other elements would then be oriented "above" the other elements. The exemplary term "below" can therefore encompass both an orientation of above and below. At the same time, the exemplary term "above" can encompass both an orientation of above and below. The exemplary term "above" can therefore encompass both an orientation of above and below. The exemplary term "above" can therefore encompass both an orientation of above and below.

[0061] As used herein, "about," "approximately," or "substantially" means within a range that is acceptable to one of skill in the art, considering the measurement and the error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value. Further, as used herein, "about," "approximately," or "substantially" can select a more acceptable range of deviation or standard deviation for optical properties, etching properties, or other properties, and can not apply one standard deviation to all properties.

[0062] The present application describes example embodiments with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, embodiments described herein are not to be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result from, for example, manufacturing. For example, a region illustrated or described as flat can often have rough and / or nonlinear features. Moreover, the illustrated acute angles can be rounded. Thus, the regions illustrated in the figures are schematic and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims to a precise region shape.

[0063] Reference is made to Figure 1 and Figure 2 . Figure 1 Split view of an electrical connection device 10 according to some embodiments of the present application. Figure 2 Perspective view of an assembled part of an electrical connection device 10.

[0064] As Figure 1 shown in the figures, the electrical connection device 10 comprises a housing 110, a clamping member 120, a base 130, a resilient member 140, and a conductive contact 150. The clamping member 120, the base 130, the resilient member 140, and the conductive contact 150 are partially or entirely disposed in the housing 110.

[0065] In particular, the housing 110 has a bottom portion BP, a top portion TP, and a side portion SP connecting the bottom portion BP and the top portion TP, forming a structure that is approximately a cuboid. The clamping member 120, the base 130, the resilient member 140, and the conductive contact 150 are disposed between the bottom portion BP and the top portion TP of the housing 110.

[0066] As Figure 1 and Figure 2As shown in the figure, the bottom BP of the housing 110 has an opening OP. The opening OP is configured to allow power connection terminals (such as the electrical connection terminals 20 and the electrical connection terminals 30 shown in subsequent figures) to pass through and enter the housing 110, thereby coupling with the base 130. The base 130 and the housing 110 can move relative to each other in the lengthwise direction (i.e., direction D1). In some embodiments, the opening OP has a dimension S1 along the lengthwise direction of the base 130. In some embodiments, the opening OP has a dimension S1' along the width direction of the base 130 that is perpendicular to the lengthwise direction (i.e., direction D3). In some embodiments, the shape of the opening OP is approximately elliptical, for example, the dimension S1 in the lengthwise direction is greater than the dimension S1' in the widthwise direction, but the present invention is not limited to this. The side SP of the housing 110 has grooves on the outer surfaces on opposite sides in the direction D3 to allow the user to hold the electrical connection device 10 and lock and unlock the electrical connection device 10 with the electrical connection terminals.

[0067] In some embodiments, to facilitate assembly of the electrical connection device 10, the housing 110 may include a first portion 112 and a second portion 114 that engage with each other. In some embodiments, the housing 110 is made of an insulating material.

[0068] like Figure 1 As shown in FIG, the engaging member 120 is located at the bottom BP of the housing 110. The engaging member 120 can be a structure formed integrally with the housing 110, or an independent structure formed separately and then assembled together. Figure 2 The engaging member 120 is shown assembled on the first portion 112 of the housing 110. Figure 2 As shown in FIG, the engaging member 120 is coupled to the bottom BP of the housing 110. For example, the engaging member 120 may have a hole that engages with the protrusion structure of the bottom BP, thereby securing the engaging member 120 to the housing 110. Furthermore, after assembly, the engaging member 120 has an edge. This edge substantially coincides with the inner edge of the opening OP, so that when the electrical connection terminal enters the housing 110 to a predetermined position, it engages with the electrical connection terminal (e.g., fits into a groove of the electrical connection terminal). In other words, in projection along direction D2, the engaging member 120 partially overlaps with the opening OP.

[0069] In some embodiments, the engaging member 120 is made of a metal material such as steel to provide a higher retention force.

[0070] like Figure 1As shown in FIG. 1, the base 130 is coupled to the housing 110. Further, the base 130 has a mating portion 130a and a connecting portion 130b connected along a length direction. The mating portion 130a is located in the housing 110 and above the engaging member 120. The mating portion 130a has a mating hole TH, and a central axis direction (i.e., direction D2) of the mating hole TH is perpendicular to the length direction of the base 130. In some embodiments, the mating hole TH can be circular or elliptical, and the mating hole TH can be a through hole having openings at both ends or a groove having an opening at one end and being closed at the other end, but the present application is not limited thereto. When the base 130 is disposed in the housing 110, the connecting portion 130b extends through the opening of the housing 110 to the outside of the housing 110, and the mating hole TH at least partially overlaps the opening OP. The opening of the housing 110 can be formed by one side of the first portion 112 and the second portion 114 combined with each other, or by one side of the side portion SP of the first portion 112 alone, for the connecting portion 130b to pass through. The connecting portion 130b is configured for an external cable to enter and electrically connect along the length direction (i.e., direction D1) of the base 130. In some embodiments, as shown in FIG. 1, the connecting portion 130b is a tubular structure to accommodate the cable, but the present application is not limited thereto. In some embodiments, as shown in FIG. 1, the connecting portion 130b has a plurality of openings OP2, and the openings OP2 are arranged along the length direction of the base 130. Figure 1 As shown in FIG. 1, the connecting portion 130b is a tubular structure to accommodate the cable, but the present application is not limited thereto. In some embodiments, as shown in FIG. 1, the connecting portion 130b has a plurality of openings OP2, and the openings OP2 are arranged along the length direction of the base 130. Figure 1 As shown in FIG. 1, the connecting portion 130b is a tubular structure to accommodate the cable, but the present application is not limited thereto. In some embodiments, as shown in FIG. 1, the connecting portion 130b has a plurality of openings OP2, and the openings OP2 are arranged along the length direction of the base 130.

[0071] As shown in FIG. 1, the connecting portion 130b is a tubular structure to accommodate the cable, but the present application is not limited thereto. In some embodiments, as shown in FIG. 1, the connecting portion 130b has a plurality of openings OP2, and the openings OP2 are arranged along the length direction of the base 130. Figure 1 As shown in FIG. 1, the connecting portion 130b is a tubular structure to accommodate the cable, but the present application is not limited thereto. In some embodiments, as shown in FIG. 1, the connecting portion 130b has a plurality of openings OP2, and the openings OP2 are arranged along the length direction of the base 130.

[0072] In other embodiments, the engaging member 120 can be located at the bottom portion BP and at a side of the abutment portion 130a distal to the connecting portion 130b in the length direction (i.e., direction Dl), while the elastic member 140 is located between the same side of the abutment portion 130a as the connecting portion 130b and the corresponding side portion SP (i.e., the side distal to the engaging member 120). The connecting portion 130b can also pass through the elastic member 140, making the elastic member 140 more stable in position and less likely to shift laterally under stress during subsequent operations.

[0073] The conductive contact member 150 is disposed in the abutment hole TH of the abutment portion 130a. The conductive contact member 150 is configured to contact an electrical connection terminal subsequently inserted into the abutment portion 130a, so as to increase the conduction area and current-carrying capacity between the abutment portion 130a and the electrical connection terminal. For example, when the electrical connection terminal is inserted into the abutment portion 130a, the conductive contact member 150 surrounds and contacts the outer wall of the electrical connection terminal 20, while the conductive contact member 150 contacts the inner wall of the abutment hole TH. In some embodiments, the conductive contact member 150 is made of a conductive material. The conductive contact member 150 can be a generally annular crown spring.

[0074] Please refer to Figures 3A-3D . Figure 3A The cross-sectional view of the electrical connection device 10 assembled according to the configuration of Figure 1 and the electrical connection terminal 20 to be inserted. Figure 3B The cross-sectional view of the electrical connection terminal 20 partially inserted into the electrical connection device 10. Figure 3C The cross-sectional view of the electrical connection terminal 20 locked in the electrical connection device 10. Figure 3D The cross-sectional view of the electrical connection terminal 20 unlocked from the electrical connection device 10. It is noted that the conductive contact member 150 is omitted in the cross-sectional view for simplicity.

[0075] First, as shown in Figure 3A , after the electrical connection device 10 is assembled, the abutment hole TH of the abutment portion 130a is in communication with the opening OP of the bottom portion BP of the housing 110. The abutment hole TH has a dimension S2 along the direction Dl. The dimension S2 of the abutment hole TH is smaller than the dimension S1 of the opening OP (as indicated in Figure 2 ). It is noted that, as shown in Figure 3A , in some embodiments, after the electrical connection device 10 is assembled, the abutment hole TH of the abutment portion 130a is partially blocked by the bottom portion BP of the housing 110. In other words, in the top-down view, the abutment hole TH is not completely exposed through the opening OP. The abutment hole TH has a lead-in angle on the side facing the opening OP, so that the caliber of the abutment hole TH gradually decreases from outside to inside to the dimension S2, so as to facilitate the subsequent insertion of the electrical connection terminal 20.

[0076] On the other hand, as shown in Figure 3A The electrical connection terminal 20 to be inserted has a dimension S3 along the direction D1. The dimension S3 of the electrical connection terminal 20 is smaller than the dimension S1 of the opening OP and slightly smaller than the dimension S2 of the abutting hole TH. The dimension of one end (the insertion front end) of the electrical connection terminal 20 gradually decreases along the direction D2. The elastic member 140 and the abutting portion 130a are arranged along the direction D1, and the elastic member 140 is located between the abutting portion 130a and the side wall in the side portion SP. This design allows the base 130 to move relative to the electrical connection terminal 20 along the direction D1 according to the stress state by extruding the elastic member 140 to deform when the electrical connection terminal 20 passes through the opening OP and is partially or completely inserted into the abutting portion 130a, and to achieve locking when the electrical connection terminal 20 reaches the locking position point (see Figure 3C ) and to achieve unlocking when the electrical connection terminal 20 leaves the locking position point.

[0077] As shown in Figure 3A The electrical connection terminal 20 to be inserted has a groove N configured for the engagement member 120 to be embedded. Although the groove N shown in the figure is a ring of grooves formed along the outer wall of the electrical connection terminal 20, the groove N can also be a groove located on one side of the electrical connection terminal 20, and the present application is not limited thereto.

[0078] As mentioned above, when the electrical connection device 10 is assembled and the electrical connection terminal 20 has not been inserted, the elastic member 140 is in a compressed state and exerts a force on the base 130, causing the abutting portion 130a of the base 130 to abut against the side portion SP away from one end of the elastic member 140, and causing the abutting hole TH to be partially blocked by the opening OP. At this time, the dimension of the abutting hole TH exposed along the direction D1 is smaller than the dimension S3 of the electrical connection terminal 20, and the elastic member 140 has a length L1 along the direction D1.

[0079] In actual application, the electrical connection terminal 20 is fixed on, for example, a printed circuit board (PCB). The user abuts the electrical connection device 10 with the fixed electrical connection terminal 20. Therefore, in the subsequent paragraphs, the movement of the components in the electrical connection device 10 relative to the electrical connection terminal 20 during the locking and unlocking processes is described based on the electrical connection terminal 20.

[0080] As mentioned above, when the electrical connection device 10 is assembled and the electrical connection terminal 20 has not been inserted, the elastic member 140 is in a compressed state and exerts a force on the base 130, causing the abutting portion 130a of the base 130 to abut against the side portion SP away from one end of the elastic member 140, and causing the abutting hole TH to be partially blocked by the opening OP. At this time, the dimension of the abutting hole TH exposed along the direction D1 is smaller than the dimension S3 of the electrical connection terminal 20, and the elastic member 140 has a length L1 along the direction D1. Figure 3BAs shown in FIG. 1 1, because the docking hole TH of the docking portion 130a is originally partially blocked by the housing 1 10 and the size of the docking hole TH exposed in the direction D1 is smaller than the size S3 of the electrical connection terminal 20, the engaging member 120 and / or the housing 1 10 abut against the electrical connection terminal 20 and are subjected to a pushing force in the right direction during the process that the front end of the electrical connection terminal 20 passes through the opening OP and is gradually pushed into the docking hole TH, so the housing 1 10 will move rightward relative to the electrical connection terminal 20 to completely expose the docking hole TH (or make the size of the docking hole TH exposed in the direction D1 greater than or equal to the size S3 of the electrical connection terminal 20). In this case, the elastic member 140 will be further compressed along the direction D1, so it has a length L2 along the direction D1. The length L2 is smaller than the length L1.

[0081] Next, as shown in FIG. 12, the electrical connection terminal 20 is inserted into the docking hole TH until the groove N of the electrical connection terminal 20 is aligned with the engaging member 120. Because the elastic member 140 is always in a compressed state, it exerts a force on the housing 1 10 in the left direction, so when the groove N of the electrical connection terminal 20 is aligned with the engaging member 120, the force of the elastic member 140 drives the housing 1 10 and the engaging member 120 to move leftward relative to the electrical connection terminal 20. This action causes the engaging member 120 to be embedded in the groove N of the electrical connection terminal 20, locking the electrical connection terminal 20 into the electrical connection device 10. At this time, the elastic member 140 has a length L3 along the direction D1 and is still in a compressed state. The length L3 is greater than the length L2. Figure 3C As shown in FIG. 13, to unlock, the user only needs to provide an external force to push the housing 1 10 rightward, causing the engaging member 120 to disengage from the groove N of the electrical connection terminal 20, so the electrical connection device 10 can be pulled upward to disengage from the electrical connection terminal 20. At this time, the compression amount of the elastic member 140 will increase. In some embodiments, the compression amount that needs to be increased in order to unlock is at least 0.5 mm compared to the locked state. Meanwhile, this compression amount is at most 2.2 mm to prevent the elastic member 140, the base 130 and the electrical connection terminal 20 from being subjected to excessive force and being damaged or fatigued during repeated locking and unlocking. For example, when the compression amount is at the maximum value, the position of the housing 1 10 relative to the electrical connection terminal 20 is as shown in FIG. 14. At this time, the elastic member 140 has a length L4 along the direction D1. The length difference between the length L4 and the length L3 is below 2.2 mm, so that the force exerted by the elastic member 140 on the base 130 and the electrical connection terminal 20 is below 9 Newton (N) during locking and unlocking.

[0082] Figure 3D As shown in FIG. 13, to unlock, the user only needs to provide an external force to push the housing 1 10 rightward, causing the engaging member 120 to disengage from the groove N of the electrical connection terminal 20, so the electrical connection device 10 can be pulled upward to disengage from the electrical connection terminal 20. At this time, the compression amount of the elastic member 140 will increase. In some embodiments, the compression amount that needs to be increased in order to unlock is at least 0.5 mm compared to the locked state. Meanwhile, this compression amount is at most 2.2 mm to prevent the elastic member 140, the base 130 and the electrical connection terminal 20 from being subjected to excessive force and being damaged or fatigued during repeated locking and unlocking. For example, when the compression amount is at the maximum value, the position of the housing 1 10 relative to the electrical connection terminal 20 is as shown in FIG. 14. At this time, the elastic member 140 has a length L4 along the direction D1. The length difference between the length L4 and the length L3 is below 2.2 mm, so that the force exerted by the elastic member 140 on the base 130 and the electrical connection terminal 20 is below 9 Newton (N) during locking and unlocking. Figure 3D Please refer to FIG. 15 and FIG. 16.

[0083] Figure 4 Figure 5 Figure 4 A split schematic view of the electrical connection device 10A according to some embodiments of the present application. Figure 5 ​​​​Figure 6 is a perspective view of the assembled second portion 114 of the housing 110 and the snap member 120 of the electrical connection device 10A. The electrical connection device 10A differs from the electrical connection device 10 in that the snap member 120 of the electrical connection device 10A is disposed above the base 130. Similarly, the snap member 120 is coupled to the top portion TP of the housing 110. In the projection in the direction D2, the snap member 120 partially overlaps the opening OP. For example, the snap member 120 can have a hole to fit with the protruding structure of the top portion TP. The snap member 120 has an arc-shaped edge to facilitate the insertion of the electrical connection terminal into the housing 110 to the predetermined position along the profile of the electrical connection terminal. It is noted that the components of the electrical connection device 10A and the electrical connection device 10 can be structurally identical components, with the difference being only the position of the assembly of the snap member 120.

[0084] Reference is made to Figures 6A-6B . Figure 6A Figure 7 is a cross-sectional view of the electrical connection terminal 30 locked in the electrical connection device 10A. Figure 6B Figure 8 is a cross-sectional view of the electrical connection terminal 30 unlocked from the electrical connection device 10A. Similarly, the conductive contact 150 is omitted in the cross-sectional view for brevity.

[0085] One of the differences between the electrical connection terminal 30 to be inserted and the electrical connection terminal 20 described above is the position of the recess N. The recess N of the electrical connection terminal 30 is closer to the top end. In addition, the bottom end of the electrical connection terminal 30 has a plurality of pins, which are columnar bodies, for insertion or press-fit into a printed circuit board for conducting a larger current.

[0086] The electrical connection terminal 30 has a dimension S4 in the direction Dl. Similarly, the dimension S4 of the electrical connection terminal 30 is smaller than the dimension SI of the opening OP (as shown in Figure 2 ) and slightly smaller than the dimension S2 of the mating hole TH (as shown in Figure 3A ), to facilitate the movement of the housing 110 relative to the electrical connection terminal 30 in the direction Dl during mating to achieve the locking and unlocking effects.

[0087] As shown in Figure 6A , the electrical connection terminal 30 passes completely through the opening OP and the mating hole TH until the snap member 120 is inserted into the recess N of the electrical connection terminal 30. As shown in Figure 6A , there is a gap between the snap member 120 and the top portion TP of the housing 110 in the direction D2, so that after the snap member 120 is inserted into the recess N of the electrical connection terminal 30, the top end of the electrical connection terminal 30 can be accommodated between the snap member 120 and the top portion TP of the housing 110.

[0088] As shown in Figure 6BAs shown in FIG. 1 1, when unlocked, the user provides an external force to push the housing 1 10 to the right, causing the engaging member 120 to disengage from the recess N of the electrical connection terminal 30, and thus the electrical connection device 10A can be removed from the electrical connection terminal 30. Similarly, the amount of compression of the elastic member 140 that needs to be increased in order to unlock is between 0.5 mm and 1.7 mm, in order to provide sufficient displacement for the engaging member 120 to disengage from the recess N, while preventing the elastic member 140, the electrical connection terminal 30 from being damaged due to excessive force during repeated locking and unlocking.

[0089] In the electrical connection device 10 and the electrical connection device 10A, the engaging member 120 is located on the side of the docking portion 130a that is away from the elastic member 140 along the direction D1. In other embodiments, the engaging member and the elastic member can be located on the same side of the docking portion 130a.

[0090] For example, please refer to Figure 7 . Figure 7 A split view of the electrical connection device 10B according to another embodiment of the present application. The spring piece 160 of the electrical connection device 10B comprises an elastic member 160a and an engaging member 160b. The elastic member 160a is approximately in the shape of an inverted U. The bottom of the elastic member 160a is connected to the engaging member 160b. For example, the elastic member 160a can comprise a flat plate and two elastic arms. The two elastic arms are approximately in the shape of an inverted L. The top of the two elastic arms is connected to the top side of the flat plate, while the bottom extends to the engaging member 160b.

[0091] After the electrical connection device 10B is assembled, the spring piece 160 is located between the docking portion 130a and the side portion SP of the housing 1 10 along the length direction of the base 130 (i.e. the direction D1 ). The spring piece 160 is located on the side of the docking portion 130a that is away from the connecting portion 130b.

[0092] It is worth noting that the first portion 1 12 and the second portion 1 14 of the housing 1 10 of the electrical connection device 10B can be slightly different from the first portion 1 12 and the second portion 1 14 of the housing 1 10 of the electrical connection device 10, but both are approximately in the shape of a cuboid, have an opening OP at the bottom BP for the electrical connection terminal to pass through, and have an opening at the side portion SP for the connecting portion 130b of the base 130 to extend out of the housing 1 10.

[0093] For example, please refer to Figure 8, which is a three-dimensional schematic diagram of the first part 112 of the shell 110 and the spring 160 of the electrical connection device 10B according to some other embodiments of the present invention after assembly. The spring 160 is coupled to the first part 112. Specifically, the locking member 160b of the spring 160 is arranged above the bottom BP. The locking member 160b has an edge. This edge is arranged along the inner edge of the opening OP to be embedded in the groove of the electrical connection terminal. Similar to the electrical connection device 10, the size of the opening OP of the electrical connection device 10B in the length direction (i.e., direction D1) can be larger than the size in the width direction (i.e., direction D3). At the same time, the side SP has a protrusion 112a protruding inward, which is configured to abut against the elastic member 160a of the spring 160. In addition, the elastic member 160a has a locking hole EH (for example, on the flat plate of the elastic member 160a) configured to couple with the base 130.

[0094] Please refer to Figures 9A-9B . Figure 9A Based on Figure 7 FIG. 1 is a cross-sectional view of an assembled electrical connection device 10B and an electrical connection terminal 20 to be inserted. Figure 9B 1 is a cross-sectional view of the electrical connection terminal 20 locked in the electrical connection device 10B. Similarly, for the sake of simplicity, the conductive contact 150 is omitted in the cross-sectional view.

[0095] like Figure 9A As shown in FIG, after the electrical connection device 10B is assembled, the engaging hole EH of the elastic member 160a is coupled to the engaging portion 130c of the base 130. Furthermore, the protrusion 112a protrudes toward the base 130, and the elastic member 160a is located between the protrusion 112a and the base 130. It is worth noting that at this point, the elastic member 160a can be in a relaxed state and is not compressed.

[0096] like Figure 9B As shown in FIG, the electrical connection terminal 20 enters the docking hole TH, causing the base 130 to move leftward relative to the housing 110, thereby compressing the elastic arm of the elastic member 160a. The protrusion 112a thus abuts against the elastic arm of the elastic member 160a, acting as a lever fulcrum, causing the engaging member 160b to move rightward and engage with the groove N of the electrical connection terminal 20, completing the locking. In this state, the engaging member 160b is partially located below the docking portion 130a of the base 130.

[0097] To unlock the electrical connection device 10B, the user only needs to apply external force to push the housing 110 to the left or pull the base 130 to the right to disengage the engaging member 160 b from the groove N of the electrical connection terminal 20 , thereby removing the electrical connection device 10B from the electrical connection terminal 20 .

[0098] As is apparent from the above detailed description of the specific embodiments of the present application, in the electrical connection device of some embodiments of the present application, the elastic member is arranged between the base and the housing along the length direction of the base, and the engaging member is arranged in the housing to be embedded in the groove of the electrical connection terminal, so that the locking and unlocking between the electrical connection device and the electrical connection terminal can be achieved by the movement of the housing relative to the electrical connection terminal along the length direction of the base. Compared with the common electrical connection device, the present application is more convenient for docking and assembling, and can reduce the time and labor consumed for installation and maintenance, thereby reducing the cost.

[0099] The foregoing description is only for the exemplary embodiments of the present application and is not intended to exhaustively or limit the precise form of the invention disclosed. The above teachings can be modified or changed.

[0100] The embodiments selected and described are to be taken as illustrative of the present application and their practical application and to thereby enable one skilled in the art to utilize the application and various embodiments with various modifications as are suited to the particular use contemplated, without departing from the spirit and scope of the present application. Alternative embodiments will be apparent to those skilled in the art without departing from the spirit and scope of the present application. Accordingly, the scope of the present application is defined by the appended claims and not by the foregoing description and exemplary embodiments described therein.

Claims

1. An electrical connection device, characterized in that A housing having a bottom, a top, and sides connecting the bottom and the top, wherein the bottom has an opening configured for a power connection terminal to pass through; a base coupled to the housing and having a mating portion and a connecting portion connected therebetween, wherein the mating portion is in the housing and has a mating hole that is in communication with the opening of the bottom of the housing; a conductive contact in the mating hole of the base; a resilient member between the mating portion of the base and the sides of the housing along a length direction of the base; and a snap member coupled to the housing and configured to be inserted into a groove of the power connection terminal. The snap member is located on a side of the mating portion away from the resilient member. The snap member is located above the base.

2. The electrical connection device of claim 1, wherein, The connecting portion is located above the snap member.

3. An electrical connection device as claimed in claim 2, characterised in that, The resilient member is connected to the snap member.

4. The electrical connection device of claim 2, wherein, The sides of the housing have a protrusion projecting toward the base, and the protrusion is configured to abut against the resilient member when the snap member is inserted into the groove of the power connection terminal.

5. The electrical connection device of claim 1, wherein, The resilient member has a snap hole, and the base has a snap portion coupled to the snap hole of the resilient member.

6. An electrical connection device as claimed in claim 5, characterised in that, The resilient member is configured to be compressed along the length direction when the snap member is inserted into the groove of the power connection terminal.

7. The electrical connection device of claim 1, wherein The power connection terminal has a dimension along the length direction that is smaller than a dimension of the opening of the housing along the length direction.

8. The electrical connection device of claim 1, wherein, The connecting portion is configured for a cable to enter and be electrically connected along the length direction.

9. The electrical connection device of claim 1, wherein, A housing having a bottom, a top, and sides connecting the bottom and the top, wherein the bottom has an opening configured for a power connection terminal to pass through; 10. An electrical connection device as claimed in claim 9, characterised in that, a base movably coupled to the housing along a length direction, wherein the base has a mating hole that is in communication with the opening of the bottom of the housing; 11. An electrical connection device, characterised in that a conductive contact in the mating hole of the base; and a snap member coupled to the housing and configured to snap the power connection terminal when the power connection terminal is inserted into the mating hole. The base includes a mating portion and a connecting portion, the mating portion is located in the housing and is connected to the connecting portion along the length direction. A resilient member is also included, the resilient member is located between the mating portion and the sides. The resilient member connects the snap member, the sides have a protrusion configured to abut against the resilient member.

12. An electrical connection device as claimed in claim 11, characterised in that, The opening has a dimension along the length direction that is greater than a dimension perpendicular to the length direction.

13. An electrical connection device as claimed in claim 12, characterised in that, In a projection direction of a central axis of the mating hole, the snap member partially overlaps the opening.

14. An electrical connection device as claimed in claim 13, characterised in that, ​ 15. The electrical connection device of claim 11, wherein, ​ 16. The electrical connection device of claim 11, wherein, ​

Images