CN219040767U - Electric connection structure and charging seat - Google Patents
Electric connection structure and charging seat Download PDFInfo
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- CN219040767U CN219040767U CN202223026363.1U CN202223026363U CN219040767U CN 219040767 U CN219040767 U CN 219040767U CN 202223026363 U CN202223026363 U CN 202223026363U CN 219040767 U CN219040767 U CN 219040767U
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- connection structure
- electrical connection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses an electric connection structure and a charging seat, comprising a conduction structure, a circuit board and at least one plug-in terminal; the conduction structure comprises a plug cavity, at least one elastic part bending towards the inside of the plug cavity and at least one fixing piece bending towards the outside of the plug cavity; the plug-in terminal is at least partially arranged in the plug-in cavity and is abutted with the elastic part; the circuit board is provided with a jack corresponding to the plug-in terminal, the conducting structure is at least partially arranged in the jack, the fixing piece is electrically connected with the circuit board, and the plug-in terminal is electrically connected with the circuit board through the conducting structure. The utility model increases the elastic part bending towards the inside of the plugging cavity, increases the contact point between the conducting structure and the plugging terminal, can firmly press the plugging terminal, and ensures the stability of signal transmission.
Description
Technical Field
The utility model relates to the field of electrical appliance connection, in particular to an electrical connection structure and a charging seat.
Background
With the rapid development of new energy technology, the demand of automobile charging sockets with various powers is greatly increased. When the automobile is charged, the automobile needs to conduct a call with a charging pile control signal to wake up the charging mode. The signal is conducted through the charging socket terminal, the charging socket terminal is connected to the charging socket circuit board through the conducting structure, and then the signal is transmitted to the whole vehicle control system through the circuit board. The current socket terminal and the circuit board are mainly connected in two modes, one is that a common spring piece is directly welded on the circuit board and is in contact with the socket terminal to realize signal conduction, and if the common spring piece is not strictly adhered to the assembly flow in the product assembly process, the spring piece is easily compressed and deformed, so that the socket terminal and the circuit board are in poor contact. A drum spring is assembled on the outer side of a socket terminal, a metal ring is welded on a circuit board, and signal conduction is achieved through contact between the drum spring and the metal ring. In the process of assembling products, the drum springs are easy to fall off, so that the socket terminals are in poor contact with the circuit board.
Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide an electric connection structure and a novel technical scheme of a charging seat, which are used for solving the problems of poor contact between a terminal and a circuit board and unstable fixation of the terminal.
According to a first aspect of the present utility model, there is provided an electrical connection structure comprising a conductive structure, a circuit board and at least one plug terminal; the conduction structure comprises a plug cavity, at least one elastic part bending towards the inside of the plug cavity and at least one fixing piece bending towards the outside of the plug cavity; the plug-in terminal is at least partially arranged in the plug-in cavity and is abutted with the elastic part; the circuit board is provided with a jack corresponding to the plug-in terminal, the conducting structure is at least partially arranged in the jack, the fixing piece is electrically connected with the circuit board, and the plug-in terminal is electrically connected with the circuit board through the conducting structure.
Optionally, at least one opening is provided on the side wall of the plugging cavity, the elastic part and/or the fixing piece is/are provided in the opening, and one end of the elastic part and/or the fixing piece is/are connected with one side of the opening.
Optionally, the plugging cavity is of a semi-closed or closed cylinder structure.
Optionally, the fixing piece and the circuit board are connected in a welding way.
Optionally, the fixing piece is arranged in a manner of being axially staggered with the elastic part or axially corresponding to the elastic part.
Optionally, a plurality of the elastic parts are uniformly and annularly arranged along the inner circumference of the conductive structure.
Optionally, the inner wall of the elastic part near one side of the free end is provided with a convex contact part, and at least part of the surface of the contact part is abutted with the plug terminal.
Optionally, the ratio of the height of the contact part protruding from the inner surface of the elastic part to the thickness of the elastic part is in the range of 1-2.5 times.
Optionally, the contact portion exerts a pressure on the plug terminal of 0.5N-50N.
The utility model also provides a charging seat, which comprises a charging seat shell and an electric connection structure containing any one of the embodiments, wherein the electric connection structure is arranged in the charging seat shell.
The utility model has the beneficial effects that:
1. the conduction structure of the utility model is provided with a bending elastic part and a fixing piece; the plug terminal is good with elasticity portion butt contact, through elasticity portion elastic deformation, exerts pressure on plug terminal, has guaranteed the stability of being connected between plug terminal and the conductive structure, and the stationary blade is firm with circuit board connection, has guaranteed signal transmission's stability, and conductive structure itself structure is firm simultaneously, can supply plug terminal plug many times, long service life.
2. The elastic parts are uniformly and annularly arranged along the inner periphery of the conducting structure, so that multipoint contact between the elastic parts and the plug terminals is ensured, a plurality of signal detection points are provided, and the stability of signal transmission is ensured.
3. The elastic part is provided with the contact part, so that the installation stability between the plug terminal and the conductive structure is further ensured.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a perspective view of an electrical connection structure according to the present utility model
FIG. 2 is an exploded view of an electrical connection structure according to the present utility model
FIG. 3 is a perspective view of a conductive structure according to the present utility model
Fig. 4 is a perspective view of a charging stand according to the present utility model
The figures are marked as follows:
1-conducting structure, 11-jack cavity, 2-jack terminal, 3-circuit board, 4-elasticity portion, 5-stationary blade, 6-jack, 7-fluting, 8-contact, 9-charging seat casing, 10-opening.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
An electrical connection structure, as shown in fig. 1-3, comprises a conductive structure 1, a circuit board 3 and at least one plug terminal 2; the conductive structure 1 comprises a plug cavity 11, at least one elastic part 4 bent towards the inside of the plug cavity 11 and at least one fixing piece 5 bent towards the outside of the plug cavity 11; the plug terminal 2 is at least partially arranged in the plug cavity 11 and is abutted against the elastic part 4; the circuit board 3 is provided with a jack 6 corresponding to the plug-in terminal 2, the conductive structure 1 is at least partially arranged in the jack 6, the fixing piece 5 is electrically connected with the circuit board 3, and the plug-in terminal 2 is electrically connected with the circuit board 3 through the conductive structure 1.
The plug terminal 2 is in butt joint with the elastic part 4 which is bent towards the inside of the plug cavity 11, the contact is good, the elastic part 4 provides a signal detection point, the plug terminal 2 transmits signals to the charging seat circuit board 3 through the conducting structure 1, and then the signals are transmitted to the whole vehicle control system, so that the stability of signal transmission is ensured; meanwhile, the elastic part 4 has good elastic performance, can be used for plugging and unplugging the plug terminal 2 for a plurality of times, and has long service life. The fixing piece 5 bent towards the inside of the plugging cavity 11 is firmly connected with the circuit board 3, so that the stability of electric connection between the circuit board 3 and the plugging terminal 2 is improved; through the plug connection of the plug terminal 2 and the conductive structure 1, the repeated plug times are increased, and meanwhile, the adaptability of the circuit board 3 is enhanced.
In some embodiments, as shown in fig. 1-3, at least one opening 10 is provided on a side wall of the plugging cavity 11, the elastic portion 4 and/or the fixing piece 5 are provided in the opening 10, and one end of the elastic portion 4 and/or the fixing piece 5 is connected to one side of the opening 10.
The elastic part 4 can be integrally formed with the body structure flat plate of the conductive structure 1 by stamping, the elastic part 4 is arranged in the opening 10, one end of the elastic part 4 is connected with one side of the opening 10 and then curled into a cylindrical shape with an axial through opening, and one end of the fixing piece 5 is welded on the other side of the opening 10 of the conductive structure 1;
the fixing piece 5 can be integrally formed with the body structure flat plate of the conducting structure 1 by stamping and is arranged in the opening 10, one side of the fixing piece 5 is connected with one side of the opening 10 and is curled into a cylindrical shape with an axial through opening, and one end of the elastic part 4 is welded on the other side of the opening 10 of the conducting structure 1;
the elastic part 4 and the fixing piece 5 are simultaneously and integrally formed with the body structure flat plate of the conducting structure 1 in a stamping way and are arranged in the opening 10, one ends of the elastic part 4 and the fixing piece 5 are respectively connected with one side opposite to the opening 10, and then the elastic part and the fixing piece are curled into a cylindrical shape with an axial through opening;
the flat plate of the body structure of the conductive structure 1 is punched with an opening 10 and then curled into a cylindrical shape with an axial through opening, and one end of the elastic part 4 and one end of the fixing piece 5 are respectively welded on two sides of the opening 10.
In some embodiments, as shown in fig. 3, the plugging chamber 11 is a semi-closed or closed cylinder structure.
The plugging cavity 11 of the semi-closed or closed cylinder structure enables the plugging terminal 2 to be conveniently installed in the plugging cavity 11, is also beneficial to the installation of the conductive structure 1 in the jack 6, and improves the installation speed.
In some embodiments, as shown in fig. 1, the fixing piece 5 is connected to the circuit board 3 by soldering.
The fixing piece 5 is fixed on the circuit board 3, preferably, the fixing piece 5 is welded on the circuit board 3, the fixing piece 5 plays a role in fixing the whole conductive structure 1, and the stability of the installation of the elastic part 4 and the plug terminal 2 on the circuit board 1 is increased, so that a stable and effective contact area is obtained, the contact resistance can be greatly reduced, and the electrical property of the electrical connection structure is improved.
In some embodiments, as shown in fig. 1 and 3, the fixing piece 5 is disposed in a manner of being axially offset from or axially corresponding to the elastic portion 4.
When the fixing piece 5 and the elastic part 4 are axially staggered or axially correspondingly arranged to enable the conductive structure 1 to be inserted into the jack 6 of the circuit board 3, the fixing piece 5 is uniformly stressed, so that the connection point of the fixing piece 5 and the conductive structure 1 is ensured to be broken during use, and the whole service life is prolonged.
In some embodiments, as shown in fig. 1-3, a plurality of the spring portions 4 are uniformly annularly arranged along the inner circumference of the conductive structure 1.
Specifically, the plurality of elastic parts 4 are uniformly annularly arranged along the inner circumference of the conductive structure 1. As shown in fig. 3, the elastic parts 4 are annularly arranged, and can contact the plug-in terminal 2 in a larger area, so that the contact resistance of the elastic parts 4 and the plug-in terminal 2 is reduced, the electrical performance of the electrical connection structure is improved, the contact points of the conductive structure 1 and the plug-in terminal 2 are increased by the plurality of elastic parts 4, and the stability of signal transmission is ensured.
Specifically, the plurality of elastic parts 4 are uniformly and annularly arranged along the circumferential direction of the conductive structure 1, as shown in fig. 3, the intervals between the elastic parts 4 are uniform, and if the plurality of elastic parts 4 are not uniformly and annularly arranged along the circumferential direction of the conductive structure 1, even are all deviated to one side, the elastic force applied by the elastic parts 4 to the plug terminal 2 is uneven, the plug terminal 2 deviates from the axis in the plug cavity 11, and the plug terminal cannot be plugged with the plug terminal 2, so that the function of electric connection cannot be realized.
In some embodiments, as shown in fig. 3, an inner wall of the elastic portion 4 near the free end side is provided with a convex contact portion 8, and at least a part of the surface of the contact portion 8 abuts against the plug terminal.
Specifically, when the contact portion 8 contacts the plug terminal 2, the contact portion 8 generates elastic displacement, so that the elastic portion 4 deforms, and the elastic portion 4 feeds back deformation stress to the contact portion 8, so that the contact portion 8 applies pressure to the plug terminal 2, the contact is more sufficient, the contact resistance is reduced, and the electrical performance of the electrical connection structure is improved.
In some embodiments, the connection between the elastic part 4 and the conductive structure 1 body is provided with a reinforcing rib, which increases the structural strength and the service life of the elastic part 4.
In some embodiments, as shown in fig. 3, the height of the contact portion 8 protruding from the inner surface of the elastic portion 4 is in a range of 1 to 2.5 times the thickness of the elastic portion 4.
In order to verify the influence of the ratio range of the height of the contact portion 8 to the thickness of the elastic portion 4 on the elastic force and the service life of the elastic portion 4, the inventor selected 10 conductive structures 1 of the same shape to test, each elastic portion 4 was punched out of the same shape at the same position, and the contact portions 8 of different heights were tested for the elastic force and the service life of the elastic portion 4, respectively, and the experimental results are shown in table 1 below.
The elastic force of the elastic part 4 is obtained by fixing the conductive structure 1 by using a precise push-pull force meter, and the precise push-pull force meter measures the elastic force of the elastic part 4 after the movement work displacement, and in the embodiment, the elastic force is less than 20N and is unqualified.
The service life test of the elastic part 4 is to assemble the elastic part 4 with the same plug-in terminal 2 and circuit board 3, then to continuously plug-in and pull-out the plug-in terminal 2, then to observe the fracture condition of the elastic part 4 every 10 times, if the fracture occurs, the test is stopped, the plug-in number of times at the time is recorded, and the value is lower than 8000 times and is not qualified.
TABLE 1 influence of the ratio of the height of the contact to the thickness of the elastic portion on the elastic force and the service life of the elastic portion
As can be seen from table 1, when the height of the contact portion 8 protruding from the inner surface of the elastic portion 4 is less than 1 time the ratio of the thickness of the elastic portion 4, the holding force of the contact portion 8 to the plug terminal 2 is too small, the plug terminal 2 causes the contact portion 8 to displace slightly, so that the elastic portion 4 deforms slightly, the elastic portion 4 feeds back a small deformation stress to the plug terminal 2, so that the plug terminal 2 applies a small pressure to the elastic portion 4, resulting in an elastic force of the elastic portion 4 of less than 20N, which is not in accordance with the required value. When the height of the contact portion 8 protruding from the inner surface of the elastic portion 4 is greater than 2.5 times the ratio of the thickness of the elastic portion 4, the thickness of the elastic portion 4 is excessively stretched due to the excessively high stamping height, and the stress is concentrated, so that the contact portion 8 is continuously cracked in multiple plugging experiments, and the number of cracked positions is increased as the height is increased, so that the contact portion cannot be used. Therefore, the inventors set that the ratio of the height of the contact portion 8 protruding from the inner surface of the elastic portion 4 to the thickness of the elastic portion 4 is in the range of 1 to 2.5 times.
In some embodiments, the contact portion 8 exerts a pressure on the plug terminal 2 of 0.5N-50N.
Further, the pressure exerted by the contact portion 8 on the plug terminal 2 may be 0.5N to 50N. In order to verify the influence of the pressure exerted by the contact portion 8 on the plug terminal 2 on the contact resistance between the contact portion 8 and the plug terminal 2, the inventors selected the conductive structure 1, the plug terminal 2 and the circuit board 3 of the same size to be mounted at the same relative position, but selected the elastic forces of the different elastic portions 4 to measure the contact resistance between the contact portion 8 and the plug terminal 2, respectively, and the test results are shown in table 2.
The elastic force of the elastic part 4 is obtained by fixing the conductive structure 1 by adopting a precise push-pull force meter, and the precise push-pull force meter measures the elastic force of the elastic part 4 after the movement work displacement.
The method for testing the contact resistance of the contact part 8 and the opposite plug terminal 2 is to use a micro resistance measuring instrument, place one end of the measuring end of the micro resistance measuring instrument on the contact part 8 and one end on the opposite plug terminal 2, and then read the contact resistance reading on the micro resistance measuring instrument. In this embodiment, a contact resistance of greater than 1mΩ is unacceptable.
Table 2 influence of different pressures on contact resistance between contact portion 8 and opposite plug terminal 2
As can be seen from table 2 above, when the pressure exerted by the contact portion 8 on the opposite terminal 2 is less than 0.5N, the contact area of the contact portion 8 and the opposite terminal 2 is small due to the small pressure, and the contact resistance is also increased, which is not in compliance with the standard requirements. When the contact portion 8 is pressed against the opposite terminal 2 by a pressure greater than 50N, the elastic force of the elastic portion 4 is too large, so that the contact portion 8 is hardly deformed, and the inscribed circle diameter of the contact portion 8 is smaller than the outer diameter of the opposite terminal 2, so that the contact portion 8 cannot be inserted into the opposite terminal 2, and thus the function of the electrical connection structure cannot be achieved. Accordingly, the inventors set the pressing force of the contact portion 8 on the opposite terminal 2 to be 0.5N to 50N.
The utility model also provides a charging stand, as shown in fig. 4, comprising a charging stand housing 9 and an electrical connection structure as described above, which is arranged in the charging stand housing 9.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. An electrical connection structure, characterized in that the electrical connection structure comprises a conductive structure, a circuit board and at least one plug terminal;
the conduction structure comprises a plug cavity, at least one elastic part bending towards the inside of the plug cavity and at least one fixing piece bending towards the outside of the plug cavity;
the plug-in terminal is at least partially arranged in the plug-in cavity and is abutted with the elastic part;
the circuit board is provided with a jack corresponding to the plug-in terminal, the conducting structure is at least partially arranged in the jack, the fixing piece is electrically connected with the circuit board, and the plug-in terminal is electrically connected with the circuit board through the conducting structure.
2. The electrical connection structure according to claim 1, wherein at least one opening is provided on a side wall of the plugging cavity, the elastic portion and/or the fixing piece are/is provided in the opening, and one end of the elastic portion and/or the fixing piece is/are connected to one side of the opening.
3. The electrical connection structure of claim 1, wherein the socket is a semi-closed or closed cylinder structure.
4. The electrical connection structure of claim 1, wherein the fixing piece is connected to the circuit board by soldering.
5. The electrical connection structure according to claim 1, wherein the fixing piece is arranged in a manner of being axially staggered from or axially corresponding to the elastic portion.
6. The electrical connection structure of claim 1, wherein a plurality of the spring portions are uniformly annularly arranged along an inner periphery of the conductive structure.
7. The electrical connection structure according to claim 1, wherein an inner wall of the elastic portion on a side close to the free end is provided with a convex contact portion, and at least a part of a surface of the contact portion abuts against the plug terminal.
8. The electrical connection structure of claim 7, wherein the height of the contact portion protruding from the inner surface of the elastic portion is in a range of 1 to 2.5 times the thickness of the elastic portion.
9. The electrical connection structure according to claim 7, wherein the contact portion exerts a pressure of 0.5N to 50N on the plug terminal.
10. A charging cradle comprising a cradle housing and an electrical connection structure according to any one of claims 1 to 9, the electrical connection structure being disposed within the cradle housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026363.1U CN219040767U (en) | 2022-11-14 | 2022-11-14 | Electric connection structure and charging seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026363.1U CN219040767U (en) | 2022-11-14 | 2022-11-14 | Electric connection structure and charging seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219040767U true CN219040767U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223026363.1U Active CN219040767U (en) | 2022-11-14 | 2022-11-14 | Electric connection structure and charging seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219040767U (en) |
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- 2022-11-14 CN CN202223026363.1U patent/CN219040767U/en active Active
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