CN219979855U - Plug terminal and electric equipment with same - Google Patents

Abstract

The utility model discloses a plug terminal and an electric device with the same, wherein the plug terminal is used for being matched with a male terminal in a plug manner, and comprises the following components: a body; the pair of first clamping pieces and the pair of second clamping pieces are arranged on the body and are used for being in plug-in fit with the male terminal; the pair of first clamping pieces and the pair of second clamping pieces are distributed at intervals along the plugging direction of the male terminal; wherein, the contact area of each pair of clamping pieces and the male terminal is the same.

Description

Plug terminal and electric equipment with same

Technical Field

The utility model belongs to the technical field of electric connection terminals, and particularly relates to a plug terminal and electric equipment with the same.

Background

In the power system, the use of the plug-in terminal greatly facilitates the connection of various wires, and more occasions begin to use the plug-in terminal. The battery pack is used for providing electric energy for the electric tool, and when the electric tool is used, the plug-in terminal on the battery pack is matched with the male terminal on the electric tool, so that electric energy transmission is realized.

Because the space on the battery pack is limited, the size of the plug-in terminal on the battery pack is limited, so that the contact area between the plug-in terminal of the battery pack and the male terminal of the electric tool is limited, and when the battery pack is electrically connected with the electric tool, the current density on the plug-in terminal is large, so that the problems of ignition and abrasion of the plug-in terminal are easily caused. Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to provide a plugging terminal capable of reducing current density during plugging and an electric device with the plugging terminal.

In order to solve the above technical problems, the present utility model provides a plug terminal for plug-in mating with a male terminal, including: a body; the pair of first clamping pieces and the pair of second clamping pieces are arranged on the body and are used for being in plug-in fit with the male terminal; the pair of first clamping pieces and the pair of second clamping pieces are distributed at intervals along the plugging direction of the male terminal; wherein, the contact area of each pair of clamping pieces and the male terminal is the same.

Preferably, the body and the two pairs of clamping pieces are integrally formed.

Preferably, the plug terminal has the pair of first clamping pieces symmetrical about a first symmetry plane and the pair of second clamping pieces symmetrical about a second symmetry plane, wherein the first symmetry plane is coplanar with the second symmetry plane.

Preferably, in the plugging terminal, the lengths of the first contact areas of the pair of first clamping pieces and the male terminal are equal to the lengths of the second contact areas of the pair of second clamping pieces and the male terminal in a direction perpendicular to the plugging direction.

Preferably, the plug terminal includes a first arm connected to the body and a second arm connected to the first arm;

the first arm part is provided with a proximal end connected with the body and a distal end connected with the second arm part, the pair of first arm parts are gradually closed in the direction from the proximal end to the distal end, and the pair of second arm parts are gradually far away.

Preferably, the body has an accommodating space, one of the pair of first clamping pieces and the pair of second clamping pieces is located in the accommodating space, and the other is located outside the accommodating space; or,

the body is provided with an accommodating space, the pair of first clamping pieces and the pair of second clamping pieces are respectively positioned at two opposite sides outside the accommodating space, and the accommodating space is configured for the male terminal to pass through.

Preferably, in the case that the pair of first clamping pieces or the pair of second clamping pieces are located in the accommodating space,

the pair of first clamping pieces or the pair of second clamping pieces and the cavity wall of the accommodating space are provided with a preset gap, and the preset gap is larger than the space of the first clamping pieces or the second clamping pieces which are spread when being matched with the male terminal.

Preferably, the body includes a pair of support plates, each support plate is provided with a first clamping piece and a second clamping piece, and the first clamping pieces and the second clamping pieces are respectively and symmetrically distributed on the support plates;

when one of the pair of first clamping pieces and the pair of second clamping pieces is positioned in the accommodating space and the other is positioned outside the accommodating space, the value range of the included angle between the first arm part positioned in the accommodating space and the supporting plate is 0-90 degrees, and the value range of the included angle between the first arm part positioned outside the accommodating space and the supporting plate is 90-170 degrees; and/or the number of the groups of groups,

under the condition that the pair of first clamping pieces and the pair of second clamping pieces are respectively positioned at two opposite sides outside the accommodating space, the value range of the included angle between the first arm part and the supporting plate is 90-170 degrees, and the value range of the included angle between the second arm part and the supporting plate is 100-170 degrees.

Preferably, the body further includes a connecting plate for connecting the pair of support plates, the pair of support plates are disposed on a pair of edges of the connecting plate that are distributed oppositely, and the connecting plate and the pair of support plates enclose to form the accommodating space;

the body is also provided with pins which are arranged on the connecting plate and are positioned on the edge adjacent to the edge where the supporting plate is positioned.

Preferably, the plug-in terminal is provided with a narrow slit on the clamping piece, and the narrow slit is configured to enhance the elastic deformation capability of the clamping piece.

The utility model also provides an electric device comprising the plug terminal.

The technical scheme provided by the utility model has the following advantages:

through setting up two pairs of centre gripping pieces in the grafting direction, increased the area of contact between public first terminal and the grafting terminal, under the circumstances of area of contact increase, effectively reduced the current density on the grafting terminal to avoid the grafting terminal to take place the problem of striking sparks and wearing and tearing with public first terminal grafting in-process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a pair of first clamping plates located outside a receiving space and a pair of second clamping plates located inside the receiving space;

FIG. 2 is a schematic view of the structure of FIG. 1 in a top view;

FIG. 3 is a schematic perspective view of a pair of first clamping plates and a pair of second clamping plates respectively located outside the accommodating space in the present utility model;

fig. 4 is a schematic diagram of the plug terminal of fig. 1 after plugging with a male terminal;

FIG. 5 is a schematic view of the structure of FIG. 4 in a top view;

FIG. 6 is a schematic view of a first crease in the present utility model;

FIG. 7 is a schematic illustration of a second fold in the present utility model;

FIG. 8 is a schematic view of a third crease in the present utility model;

FIG. 9 is a schematic view of a fourth crease in the present utility model;

FIG. 10 is a schematic diagram of a conventional lead;

FIG. 11 is a schematic view of an electrical device according to the present utility model;

fig. 12 is an exploded view of fig. 11.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

Example 1

Referring to fig. 1 to 5, the present utility model provides a plug terminal for plug-in mating with a male terminal 200 to form an electrical connection. In an adaptive scenario, the plug terminal is an electrical connection terminal of a battery pack, and after making an electrical connection with the power tool, supplies power to the power tool. Of course, the plug terminal may also be an electrical connection terminal on other devices, for example, when the plug terminal is applied to the working lamp, the plug terminal is a charging terminal of the working lamp, so as to realize the charging operation of the working lamp. The application scenario of the plug-in terminal is not described here in detail.

The following will mainly take the use of the plug terminal as an electrical connection terminal of a battery pack as an example. It will be appreciated from the foregoing that the scope of embodiments of the utility model is not limited thereby.

The plug terminal includes: the body 100 and at least two pairs of clamping pieces are arranged on the body 100 and are used for being in plug-in fit with the male terminal 200 to realize electric connection. At least two pairs of clamping pieces are distributed at intervals along the plugging direction of the male terminal 200, and the contact area of each pair of clamping pieces and the male terminal 200 is the same.

In this embodiment, the body 100 is integrally formed with at least two pairs of clamping pieces. The above "integral molding" means: the body 100 and at least two pairs of clamping tabs are machined from a single sheet of material. Specifically, the plug-in terminal is formed by bending a plate for multiple times after cutting the plate into a preset shape.

The plug terminal has a flattened state when the body 100 and at least two pairs of clamping pieces are positioned on the same plane, and a molded state when the body 100 and the clamping pieces are bent for multiple times. Fig. 1 to 5 are schematic views of the plug terminal in a molded state, and fig. 6 to 9 are schematic views of the plug terminal in a flattened state. In this embodiment, no matter the plug-in terminal is in a flattened state or in a molded state, the clamping pieces are symmetrically distributed relative to the insertion direction of the male terminal 200, so that the processing is convenient, and the structure is also attractive and elegant.

With respect to the arrangement of the clamping pieces, as shown in fig. 1 to 5, preferably, at least two pairs of clamping pieces include a pair of first clamping pieces 110 and a pair of second clamping pieces 120 distributed along the plugging direction of the male terminal 200. Wherein, the pair of first clamping pieces 110 are symmetrical about a first symmetry plane (not shown), the pair of second clamping pieces 120 are symmetrical about a second symmetry plane (not shown), and the first symmetry plane and the second symmetry plane are coplanar. That is, the pair of first clamping pieces 110 and the pair of second clamping pieces 120 are arranged on the same straight line, and the male terminal 200 is inserted into the pair of first clamping pieces 110 and the pair of second clamping pieces 120 in order along the above straight line direction.

The case where the body 100 is provided with the two pairs of the clamping pieces will be described below as an example, but it is understood that the scope of the embodiments of the present utility model is not limited thereto based on the above description.

It will be appreciated that there is a first contact area between the pair of first clamping tabs 110 and the male terminal 200 and a second contact area between the pair of second clamping tabs 120 and the male terminal 200. The contact area between the male terminal 200 and the mating terminal is the sum of the area of the first contact area and the area of the second contact area. If the area of the first contact area is defined as Z, then in this embodiment, the contact area between the male terminal 200 and the plug terminal is 2Z. Compared with the traditional situation that only a pair of clamping pieces are arranged, the contact area between the male terminal 200 and the plug-in terminal is effectively increased, and under the condition that the contact area is increased, the current density on the plug-in terminal is effectively reduced, so that the problems of sparking and abrasion of the plug-in terminal in the plug-in process with the male terminal 200 are avoided.

And, at least two pairs of clamping pieces distributed in the plugging direction can strengthen the stability and reliability of connection between the plugging terminal and the male terminal 200 to a certain extent, reduce or avoid the problem of contact failure, and ensure that the battery pack can continuously and stably supply power for the electric tool.

In order to make the area of the first contact area equal to the area of the second contact area, the length a of the first contact area of the pair of first clamping pieces 110 and the male terminal 200 is equal to the length B of the second contact area of the pair of second clamping pieces 120 and the male terminal 200 in the directions perpendicular to the plugging direction in the first symmetry plane and the second symmetry plane.

Further, the clip (first clip 110, second clip 120) is provided with a slit 130, and the slit 130 extends in the clip substantially along the insertion direction of the male terminal 200. The narrow slits 130 enhance the elastic deformability of the clamping piece, or increase the fitting toughness of the clamping piece, improve the fitting degree when being fitted with the male terminal 200, and have the advantage of good clamping effect.

In the present embodiment, the body 100 includes a pair of support plates 101 and a connection plate 102 for connecting the pair of support plates 101. Wherein, a pair of backup pads 101 are located on a pair of relatively distributed border of connecting plate 102, and connecting plate 102 encloses with a pair of backup pads 101 and is formed the accommodation space. In this embodiment, each supporting plate 101 is provided with a first clamping piece 110 and a second clamping piece 120, and a pair of first clamping pieces 110 and a pair of second clamping pieces 120 are symmetrically distributed on the pair of supporting plates 101 respectively. That is, the pair of first clamping pieces 110 are symmetrically distributed on the pair of support plates 101, and the pair of second clamping pieces 120 are symmetrically distributed on the pair of support plates 101.

The positional relationship between the accommodating space and the pair of first clamping pieces 110 and the pair of second clamping pieces 120 has the following two distribution conditions: in the first distribution, one of the pair of first clamping pieces 110 and the pair of second clamping pieces 120 is located in the accommodating space, and the other is located outside the accommodating space, and fig. 1 and fig. 2 are schematic diagrams of the pair of first clamping pieces 110 being located outside the accommodating space and the pair of second clamping pieces 120 being located in the accommodating space; in the second case, the pair of first clamping pieces 110 and the pair of second clamping pieces 120 are respectively located at two opposite sides of the outer portion of the accommodating space, in which case the accommodating space is used for the male terminal 200 to pass through, fig. 3 is a schematic diagram of the pair of first clamping pieces 110 and the pair of second clamping pieces 120 respectively located at two sides of the outer portion of the accommodating space.

In the present embodiment, the first clamping piece 110 and the second clamping piece 120 respectively include a first arm portion P connected to the body 100, and a second arm portion Q connected to the first arm portion P. The first arm P has a proximal end connected to the body 100 and a distal end connected to the second arm Q, and the first arm P and the second arm Q smoothly transition therebetween. The cross-section extension lines of the first arm portion P and the second arm portion Q are at least one of straight lines, folded lines, and arc lines, and the "cross section" is a cross section in the plugging direction of the male terminal 200. In the proximal to distal direction, the pair of first arms P are gradually closer together, and the pair of second arms Q are gradually farther apart.

The second arm Q of the first clamping piece 110 may be regarded as a free end of the first clamping piece 110, and likewise the second arm Q of the second clamping piece 120 may be regarded as a free end of the second clamping piece 120. In the present embodiment, the second arm portions Q of the pair of first clamping pieces 110 sandwich the first flares, and the second arm portions Q of the pair of second clamping pieces 120 sandwich the second flares. The first flared mouth is configured to guide insertion of the male terminal 200 between the pair of first clamping tabs 110 and the second flared mouth is configured to guide insertion of the male terminal 200 between the pair of second clamping tabs 120. The included angle M1 of the first flaring and the included angle M2 of the second flaring are acute angles, and the included angle M1 and the included angle M2 may be equal or unequal.

In the present embodiment, the sizes of the first arm portion P and the second arm portion Q of the first clamping piece 110 may be the same as or different from those of the first arm portion P and the second arm portion Q of the second clamping piece 120. Preferably, when the pair of first clamping pieces 110 and the pair of second clamping pieces 120 are respectively located at two outer sides of the accommodating space, the first arm P and the second arm Q of the first clamping piece 110 are the same or substantially the same as the first arm P and the second arm Q of the second clamping piece 120. In this specification, "substantially" is understood to mean close to, approximate to, or within a predetermined range from the target value.

When the pair of first clamping pieces 110 are located outside the accommodating space and the pair of second clamping pieces 120 are located in the accommodating space, the sizes of the first arm portions P and the second arm portions Q of the first clamping pieces 110 are different from the sizes of the first arm portions P and the second arm portions Q of the second clamping pieces 120.

It should be noted that, in the case that the pair of first clamping pieces 110 or the pair of second clamping pieces 120 are located in the accommodating space, a predetermined gap is formed between the pair of first clamping pieces 110 or the pair of second clamping pieces 120 and the cavity wall of the accommodating space, and the predetermined gap is larger than the space in which the first clamping pieces 110 or the second clamping pieces 120 are spread when being matched with the male terminal 200. Fig. 1 and fig. 2 are schematic diagrams of a pair of second clamping pieces 120 located in the accommodating space, at this time, a preset gap between the pair of second clamping pieces 120 and a cavity wall of the accommodating space is larger than a space where the second clamping pieces 120 are spread when being matched with the male terminal 200, so that interference between the second clamping pieces 120 and the cavity wall of the accommodating space is avoided when the male terminal 200 is inserted, and therefore, the male terminal 200 and the second clamping pieces 120 can be ensured to be inserted and extracted.

In the case where one of the pair of first clamping pieces 110 and the pair of second clamping pieces 120 is located in the accommodation space and the other is located outside the accommodation space, the value of the angle between the first arm portion P located in the accommodation space and the support plate 101 may be in the range of 0 ° to 90 °, for example, the value of the angle may be 0 °, 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, or may be an increase in interval units of 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 ° between 0 ° and 90 °; the included angle between the first arm portion P located outside the accommodating space and the supporting plate 101 is in the range of 90 ° to 170 °. The included angle between the second arm Q and the support plate 101 ranges from 100 ° to 170 °.

In the case where the pair of first clamping pieces 110 and the pair of second clamping pieces 120 are located outside the housing space, the included angle between the first arm portion P and the support plate 101 is in the range of 90 ° to 170 °, and the included angle between the second arm portion Q and the support plate 101 is in the range of 100 ° to 170 °.

The angle between the first arm P and the support plate 101 may be 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, or may be increased by 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 ° between 90 ° and 170 °. The angle between the second arm Q and the support plate 101 may be 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, or may be increased by 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 ° between 100 ° and 170 °.

Referring to fig. 1, in the present embodiment, a pin 103 is further disposed on the body 100, and the pin 103 is disposed on the connecting plate 102 and located on an edge adjacent to the edge of the supporting plate 101. As previously described, a pair of support plates 101 are provided on a pair of oppositely disposed edges of the web 102. In this embodiment, the connection board 102 is substantially rectangular, the support board 101 is located on one opposite edge of the connection board 102, and the pins 103 are located on the other opposite edge of the connection board 102, so that the structure layout is reasonable, and the space is fully utilized.

As can be seen from the above, the positions of the pins 103 and the supporting plate 101 are staggered, and compared with the conventional scheme shown in fig. 10 in which the pins 103a are bent after being partially punched on the supporting plate 101, the structural strength of the supporting plate 101 is effectively improved, and the overall structural strength of the plug-in terminal is ensured.

With continued reference to fig. 6 to 9, the bending trace between the first arm P and the second arm Q of the clamping piece is a first bending trace 1001, the bending trace between the first arm P and the supporting board 101 is a second bending trace 1002, the bending trace between the supporting board 101 and the connecting board 102 is a third bending trace 1003, and the bending trace between the connecting board 102 and the lead 103 is a fourth bending trace 1004. In this embodiment, the bending sequence of the plug terminal is as follows: first, a first crease 1001, second, third, and fourth crease 1002, 1003 are formed.

Example 2

The utility model also provides an electrical device, which in an adaptive scenario is a battery pack comprising the plug terminals as described in embodiment 1. Of course, the electrical device includes, but is not limited to, a battery pack, and other electrical devices, such as a work light, a charger, etc., are not described in detail herein.

Fig. 11 and 12 are schematic structural views of the electrical device in the form of a battery pack. The battery pack includes a battery body 300 and a cover case 400 covering the battery body 300, wherein the battery body 300 is provided with at least one pair of the plug terminals and at least one pair of the communication terminals 310. The at least one pair of plug terminals are connected with the anode and the cathode of the male terminal and are used for supplying power. The pair of communication terminals 310 are used for communication. The housing 400 is provided with a plug port 410 corresponding to the plug terminal and the communication terminal 310.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims (11)

1. A plug terminal for plug-in mating with a male terminal, comprising:

a body;

the pair of first clamping pieces and the pair of second clamping pieces are arranged on the body and are used for being in plug-in fit with the male terminal; the pair of first clamping pieces and the pair of second clamping pieces are distributed at intervals along the plugging direction of the male terminal;

wherein, the contact area of each pair of clamping pieces and the male terminal is the same.

2. The plug terminal as claimed in claim 1, wherein,

the body and the two pairs of clamping pieces are integrally formed.

3. The plug terminal as claimed in claim 1, wherein,

the pair of first clamping pieces are symmetrical about a first plane of symmetry and the pair of second clamping pieces are symmetrical about a second plane of symmetry, wherein the first plane of symmetry is coplanar with the second plane of symmetry.

4. The plug terminal as claimed in claim 1, wherein,

in the direction perpendicular to the plugging direction, the length of the first contact area of the pair of first clamping pieces and the male terminal is equal to the length of the second contact area of the pair of second clamping pieces and the male terminal.

5. The plug terminal as claimed in claim 1, wherein,

the first clamping piece and the second clamping piece respectively comprise a first arm part connected with the body and a second arm part connected with the first arm part;

the first arm part is provided with a proximal end connected with the body and a distal end connected with the second arm part, the pair of first arm parts are gradually closed in the direction from the proximal end to the distal end, and the pair of second arm parts are gradually far away.

6. The plug terminal as claimed in claim 5, wherein,

the body is provided with an accommodating space, one of the pair of first clamping pieces and the pair of second clamping pieces is positioned in the accommodating space, and the other is positioned outside the accommodating space; or,

the body is provided with an accommodating space, the pair of first clamping pieces and the pair of second clamping pieces are respectively positioned at two opposite sides outside the accommodating space, and the accommodating space is configured for the male terminal to pass through.

7. The plug terminal according to claim 6, wherein, in the case where the pair of first holding pieces or the pair of second holding pieces are located in the receiving space,

the pair of first clamping pieces or the pair of second clamping pieces and the cavity wall of the accommodating space are provided with a preset gap, and the preset gap is larger than the space of the first clamping pieces or the second clamping pieces which are spread when being matched with the male terminal.

8. The plug terminal as claimed in claim 6, wherein,

the body comprises a pair of support plates, each support plate is provided with a first clamping piece and a second clamping piece, and the pair of first clamping pieces and the pair of second clamping pieces are respectively and symmetrically distributed on the pair of support plates;

when one of the pair of first clamping pieces and the pair of second clamping pieces is positioned in the accommodating space and the other is positioned outside the accommodating space, the value range of the included angle between the first arm part positioned in the accommodating space and the supporting plate is 0-90 degrees, and the value range of the included angle between the first arm part positioned outside the accommodating space and the supporting plate is 90-170 degrees; and/or the number of the groups of groups,

under the condition that the pair of first clamping pieces and the pair of second clamping pieces are respectively positioned at two opposite sides outside the accommodating space, the value range of the included angle between the first arm part and the supporting plate is 90-170 degrees, and the value range of the included angle between the second arm part and the supporting plate is 100-170 degrees.

9. The plug terminal as claimed in claim 8, wherein,

the body further comprises a connecting plate for connecting the pair of supporting plates, the pair of supporting plates are arranged on a pair of opposite edges of the connecting plate, and the connecting plate and the pair of supporting plates enclose to form the accommodating space;

the body is also provided with pins which are arranged on the connecting plate and are positioned on the edge adjacent to the edge where the supporting plate is positioned.

10. The plug terminal according to any one of claims 1 to 9, wherein,

the clamping sheet is provided with a slot configured to enhance the elastic deformability of the clamping sheet.

11. An electrical device comprising a plug terminal according to any one of claims 1 to 10.