CN210201710U - Voltage conversion device - Google Patents
Voltage conversion device Download PDFInfo
- Publication number
- CN210201710U CN210201710U CN201921052421.3U CN201921052421U CN210201710U CN 210201710 U CN210201710 U CN 210201710U CN 201921052421 U CN201921052421 U CN 201921052421U CN 210201710 U CN210201710 U CN 210201710U
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- conversion device
- voltage conversion
- circuit board
- shell
- housing
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Abstract
An embodiment of the utility model provides a voltage conversion device belongs to electronic circuit technical field. The voltage conversion device comprises a first shell, a circuit board, a second shell and a connector; the first shell is made of metal and has an electromagnetic shielding function, and an accommodating cavity is formed in the first shell; the circuit board is provided with a voltage stabilizing circuit, and the circuit board and the voltage stabilizing circuit are accommodated in the accommodating cavity; the second shell is made of an electric insulation material and covers the opening of the accommodating cavity; the connector is arranged on the second shell, electrically connected with the circuit board and used for electrically connecting the voltage conversion device in the power supply circuit. The circuit board is provided with voltage stabilizing circuit, and circuit board and voltage stabilizing circuit all accept in acceping the intracavity, and under the protection of the electromagnetic shield of first casing, voltage stabilizing circuit normal operation, stability, when supply circuit's voltage step-down suddenly, voltage stabilizing circuit can pull up supply circuit's voltage to guarantee that the consumer can normally work.
Description
Technical Field
The embodiment of the utility model provides a relate to electronic circuit technical field, in particular to voltage conversion equipment.
Background
Currently, vehicles are equipped with on-board multimedia entertainment systems. Based on the requirement of environmental protection and energy conservation, when the vehicle encounters a red light or other special conditions during running, the vehicle needs to stop running, and the engine can be temporarily shut down. When the vehicle engine is restarted, because the starting needs a large starting current, the output voltage of the vehicle-mounted power supply is pulled down instantly, and the power utilization appliance in the starting state is easily interrupted or shut down temporarily, so that the user experience is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a aim at providing a voltage conversion device, be applied to supply circuit, this voltage conversion device can solve among the prior art when supply circuit's voltage step-down suddenly and can not guarantee the technical problem of the normal work of power consumption electrical apparatus.
The embodiment of the utility model provides an adopt following technical scheme:
a voltage conversion device includes a first housing, a circuit board, a second housing, and a connector;
the first shell is made of metal and has an electromagnetic shielding function, and an accommodating cavity is formed in the first shell;
the circuit board is provided with a voltage stabilizing circuit, and the circuit board and the voltage stabilizing circuit are accommodated in the accommodating cavity;
the second shell is made of an electric insulation material, and the second shell covers the opening of the accommodating cavity;
the connector is arranged on the second shell, electrically connected with the circuit board and used for electrically connecting the voltage conversion device to a power supply circuit.
Optionally, the voltage conversion device further includes a shielding member located at the opening of the accommodating cavity and abutting against the first housing.
Optionally, the second shell faces one end of the accommodating cavity, a mounting position is arranged at the bottom of the mounting position, a protrusion is convexly arranged at the bottom of the mounting position, the shielding piece is correspondingly provided with a clamping hole, and the clamping hole and the protrusion are correspondingly matched with a buckle so as to fixedly mount the shielding piece at the mounting position.
Optionally, a supporting block is disposed at an edge of the mounting position, the shielding element is correspondingly provided with a notch, and the position of the notch and the position of the supporting block are correspondingly matched to position the shielding element at the mounting position.
Optionally, the shielding member is made of a metal material and has an electromagnetic shielding function.
Optionally, a guide groove is formed in the inner side wall of the accommodating cavity, the extending direction of the guide groove extends from the opening of the accommodating cavity to the bottom of the accommodating cavity, the edge of the circuit board is located in the guide groove, and the surface of the circuit board faces the inner side wall of the accommodating cavity.
Optionally, two inner side walls of the accommodating cavity opposite to each other are respectively provided with a guide groove, and two side portions of the circuit board are correspondingly located in the two guide grooves one to one.
Optionally, one end of the circuit board is fixedly connected to an end surface of the second housing facing the accommodating cavity.
Optionally, the first housing is integrally formed, a pressing portion is extended from one end of the first housing close to the second housing, a fastening groove is formed in an end surface of the second housing opposite to the accommodating cavity, and the pressing portion is bent and pressed in the fastening groove so as to fixedly mount the first housing relative to the second housing.
Optionally, the connector includes a connector, the connector is embedded in the second housing, and at least a portion of the connector is convexly disposed on the second housing away from an end surface of the accommodating cavity.
Compared with the prior art, in the voltage conversion device of this embodiment, the circuit board is provided with voltage stabilizing circuit, just the circuit board with voltage stabilizing circuit all accept in accept the intracavity under the protection of the electromagnetic shield of first casing, voltage stabilizing circuit normal operation, stability, when the voltage of supply circuit becomes low suddenly, voltage stabilizing circuit can pull up supply circuit's voltage to guarantee to use electrical apparatus can normally work.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a voltage conversion device according to an embodiment of the present invention;
FIG. 2 is an exploded schematic view of FIG. 1;
FIG. 3 is a further exploded view of FIG. 1;
fig. 4 is a schematic structural view of the shielding plate and the second housing shown in fig. 3.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like as used herein are used in the description to indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 and 2, an embodiment of the present invention provides a voltage conversion apparatus 100, wherein the voltage conversion apparatus 100 is connected to a power supply circuit for providing a stable voltage and/or a stable current for an electric appliance. For example, the voltage conversion apparatus 100 includes a voltage stabilizing circuit 31, the voltage conversion apparatus 100 is applied to a power supply circuit of a vehicle multimedia system, a vehicle power supply is electrically connected to a power input terminal of the voltage conversion apparatus 100, and a power output terminal of the voltage conversion apparatus 100 is electrically connected to the vehicle multimedia system, so that the voltage conversion apparatus 100 can provide a stable voltage and/or a stable current for the vehicle multimedia system.
The voltage conversion device 100 further includes a first housing 10 and a second housing 20, the first housing 10 is mounted on the second housing 20, the first housing 10 and the second housing 20 enclose an internal space of the voltage conversion device 100, and the internal space of the voltage conversion device 100 is used for accommodating electronic devices.
The first casing 10 is substantially in a cover-shaped structure, a containing cavity 13 is arranged in the first casing 10, and an opening of the containing cavity 13 is located at one end of the first casing 10 and exposed outwards. The second housing 20 is covered and installed at the opening of the accommodating cavity 13, so that the first housing 10 and the second housing 20 enclose an internal space of the voltage conversion device 100, wherein the internal space of the voltage conversion device 100 includes the accommodating cavity 13. Optionally, a pressing portion 12 is extended from one end of the first housing 10 close to the second housing 20, a fastening groove 21 is recessed from one end surface of the second housing 20 opposite to the first housing 10, and when the second housing 20 covers the opening of the accommodating cavity 13, the pressing portion 12 is bent and pressed in the fastening groove 21, so that the second housing 20 is fixedly mounted with respect to the first housing 10. Optionally, when the second housing 20 covers the opening of the receiving cavity 13, the second housing 20 abuts against the first housing 10, and the pressing portion 12 can be bent and pressed in the fastening groove.
Of course, the fixing and mounting manner between the first housing 10 and the second housing 20 may also be a screw fixing manner, a snap fixing manner, or the like.
The first housing 10 is a main housing portion of the voltage conversion device 100, and an outer side wall of the first housing 10 is convexly provided with a mounting ear 11, a user can fix the voltage conversion device 100 on a support through the mounting ear 11, for example, the mounting ear 11 is provided with a threaded hole 111, and the user can fix the voltage conversion device 100 on a vehicle through the threaded hole 111.
In this embodiment, the first casing 10 is made of metal, and has an electromagnetic shielding function, and when the main electronic device of the voltage conversion apparatus 100 is accommodated in the accommodating cavity 13, the electronic device is ensured to operate normally and stably under the electromagnetic shielding effect of the first casing 10. The second housing 20 is made of an electrically insulating material, such as a plastic material.
In the present embodiment, the first housing 10 is integrally formed, for example, the first housing 10 is formed by stamping and forming in one step.
The voltage conversion apparatus 100 further includes a circuit board 30 and a connector 40, and the circuit board 30 and the connector 40 are electrically connected. In this embodiment, the circuit board 30 is a plate structure, the voltage regulator circuit 31 is disposed on the circuit board 30, the circuit board 30 and the voltage regulator circuit 31 are both accommodated in the accommodating cavity 13, and the circuit board 30 is assembled through an opening of the accommodating cavity 13 and is empty in the accommodating cavity 13. It can be understood that the voltage stabilizing circuit 31 is disposed on the circuit board 30, the voltage stabilizing circuit 31 is used for making the output power supply be a stable constant voltage, for example, the output power supply of the vehicle-mounted power supply is 12V, the vehicle-mounted power supply is connected to the input end of the voltage conversion device 100, wherein the voltage at the output end of the voltage conversion device 100 is also 12V, during the instant starting of the vehicle, the voltage connected to the input end of the voltage conversion device 100 by the vehicle-mounted power supply is suddenly lower than 12V, and the voltage stabilizing circuit 31 pulls up the voltage and keeps the voltage at the output end of the voltage conversion device 100 at 12V. In the vehicle multimedia system of the vehicle, since the vehicle is suddenly started, the input voltage connecting the vehicle power supply into the voltage conversion device 100 at the moment of starting becomes suddenly smaller, and the voltage conversion device 100 provided by the present application can ensure that the output voltage of the voltage conversion device 100 is a stable constant voltage.
In this embodiment, a guide groove 14 is disposed on an inner side wall of the accommodating cavity 13, and an extending direction of the guide groove 14 extends from an opening of the accommodating cavity 13 to a bottom of the accommodating cavity 13. In the process of assembling the product, one end of the circuit board 30 is fixedly connected to one end of the second housing 20 close to the accommodating cavity 13, the other end of the circuit board 30 opposite to the end enters the opening of the accommodating cavity 13, the edge of the circuit board 30 is located in the guide groove 14, the circuit board 30 moves to one side of the bottom of the accommodating cavity 13 under the guiding action of the guide groove 14 and is accommodated in the accommodating cavity 13, and when the circuit board 30 moves to the limit position, the second housing 20 covers the opening of the accommodating cavity 13, thereby realizing the assembling process.
Optionally, the two opposite inner side walls of the accommodating cavity 13 are respectively provided with the guide grooves 14, two opposite side portions of the circuit board 30 are respectively located in the two guide grooves 14 in a one-to-one correspondence manner, and the circuit board 30 moves to one side of the bottom of the accommodating cavity 13 under the guiding action of the two guide grooves 14. In this embodiment, two side portions of the circuit board 30 are respectively located in the two guide slots 14 in a one-to-one correspondence, and one end portion of the circuit board 30 is fixedly connected to the second housing 20, and when the second housing 20 is fixedly mounted on the first housing 10, the circuit board 30 is fixedly mounted under the limiting effect of the two guide slots 14 and the second housing 20. Optionally, when the circuit board 30 is assembled in the accommodating cavity 13, the circuit board 30 abuts against the bottom of the accommodating cavity 13.
In this embodiment, the connector 40 is embedded in the second housing 20 and at least a portion of the connector 40 is exposed to the outside, and the exposed portion of the connector 40 is used to electrically connect the voltage conversion apparatus 100 to a power supply circuit. For example, the connector 40 includes a plug 41, and a power input pin 421, a power output pin 423 and a control signal pin 422 provided on the plug 41. The plug connector 41 is embedded in the second housing 20, and at least a part of the plug connector 41 is convexly arranged on an end surface of the second housing 20 far away from the accommodating cavity 13, for example, the plug connector 41 is embedded in the second housing 20, and two opposite ends of the plug connector 41 are respectively extended and convexly arranged on the second housing 20. One end of the power input pin 421 extends towards one side of the accommodating cavity 13 and is electrically connected to the circuit board 30, and the other end of the power input pin 421 extends towards one side far away from the accommodating cavity 13 and is used for being plugged with an external power supply. One end of the power output pin 423 extends towards one side of the accommodating cavity 13 and is electrically connected with the circuit board 30, and the other end of the power output pin 423 extends towards one side far away from the accommodating cavity 13 and is used for being plugged with an electric appliance. One end of the control signal pin 422 extends towards one side of the accommodating cavity 13 and is electrically connected with the circuit board 30, the other end of the control signal pin 422 extends towards one side far away from the accommodating cavity 13 and is used for receiving a control signal, for example, when a vehicle-mounted power supply is suddenly started, and the voltage mutation of the power input pin 421 is smaller than the original voltage (for example, the voltage mutation is from 12V to 8V), a control signal is triggered, and enters the voltage stabilizing circuit 31 on the circuit board 30 through the control signal pin 422, so that the output voltage of the power output pin 423 is stable and constant under the action of the voltage stabilizing circuit 31.
Optionally, the plug connector 41 and the second housing 20 are integrally formed, the plug connector 41 is a portion that extends away from the side of the accommodating cavity 13, the plug connector 41 is used for electrically connecting the voltage conversion device 100 to a power supply circuit, wherein the plug connector 41 of the portion is provided with the power input pin 421, the power output pin 423 and the control signal pin 422.
Referring to fig. 3 and 4, the voltage conversion apparatus 100 further includes a shielding element 50, and the shielding element 50 is made of a metal material and has an electromagnetic shielding function. The shielding member 50 is located at the opening of the accommodating cavity 13 and is abutted against the first casing 10, the first casing 10 and the shielding member 50 are enclosed to form a shielding space, the shielding space is equivalent to the space of the accommodating cavity 13, the circuit board 30, the voltage stabilizing circuit 31 arranged on the circuit board 30 and other auxiliary electronic devices are accommodated in the shielding space, namely, the main electronic device of the voltage conversion device 100 is accommodated in the shielding space, so that electromagnetic interference is avoided.
In the present embodiment, the shielding member 50 is a sheet-like structure, and the shielding member 50 is mounted on the second housing 20 and abuts against the first housing 10. For example, the second housing 20 has an installation position 22 at an end facing the receiving cavity 13, a protrusion 221 is protruded from a bottom of the installation position 22, the shielding member 50 has a locking hole 52, when the shielding member 50 is located at the installation position 22, the locking hole 52 corresponds to the protrusion 221, and the locking hole 52 corresponds to the protrusion 221 and is in snap fit with the protrusion 221, so as to fix the shielding member 50 to the second housing 20.
Furthermore, a supporting block 222 is convexly disposed at an edge of the mounting position 22, the shielding element 50 is correspondingly formed with a notch 53, and when the shielding element 50 is located at the mounting position 22, the supporting block 222 is correspondingly matched with the notch 53, so as to position the shielding element 50 on the mounting position 22.
Further, a avoiding hole 51 is further formed in the shielding element 50, the plug element 41 is embedded in the second housing 20, and when the shielding element 50 is located at the installation position 22, the portion of the plug element 41 extending to one side of the accommodating cavity 13 can pass through the avoiding hole 51, so that the power input pin 421, the power output pin 423 and the control signal pin 422 are electrically connected to the circuit board 30 respectively.
In summary, the technical solution of the present application includes, but is not limited to, the following advantages:
the circuit board 30 is provided with the voltage stabilizing circuit 31, and the circuit board 30 with the voltage stabilizing circuit 31 all accept in the chamber 13 under the protection of the electromagnetic shield of first casing 10, voltage stabilizing circuit 31 normal, stable operation, when supply circuit's voltage becomes low suddenly, voltage stabilizing circuit 31 still can pull up supply circuit's voltage to guarantee that the consumer can normally work.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A voltage conversion device is characterized by comprising a first shell, a circuit board, a second shell and a connector;
the first shell is made of metal and has an electromagnetic shielding function, and an accommodating cavity is formed in the first shell;
the circuit board is provided with a voltage stabilizing circuit, and the circuit board and the voltage stabilizing circuit are accommodated in the accommodating cavity;
the second shell is made of an electric insulation material, and the second shell covers the opening of the accommodating cavity;
the connector is arranged on the second shell, electrically connected with the circuit board and used for electrically connecting the voltage conversion device to a power supply circuit.
2. The voltage conversion device according to claim 1, further comprising a shield member located at an opening of the receiving cavity and abutting against the first housing.
3. The voltage conversion device according to claim 2, wherein an installation position is provided at an end of the second housing facing the receiving cavity, a protrusion is protruded from a bottom of the installation position, the shielding member is correspondingly provided with a locking hole, and the locking hole and the protrusion are correspondingly snap-fitted to fixedly install the shielding member at the installation position.
4. The voltage conversion device according to claim 3, wherein a support block is disposed on an edge portion of the mounting position, the shielding member is correspondingly provided with a notch, and the position of the notch and the position of the support block are correspondingly matched to position the shielding member at the mounting position.
5. The voltage conversion device according to claim 2, wherein the shielding member is made of a metal material and has an electromagnetic shielding function.
6. The voltage conversion device according to claim 1, wherein a guide groove is formed in an inner side wall of the receiving cavity, the guide groove extends from an opening of the receiving cavity to a bottom of the receiving cavity, an edge of the circuit board is located in the guide groove, and a surface of the circuit board faces the inner side wall of the receiving cavity.
7. The voltage conversion device according to claim 6, wherein two opposite inner sidewalls of the receiving cavity are respectively provided with a guide groove, and two side portions of the circuit board are correspondingly located in the two guide grooves.
8. The voltage conversion device according to claim 6, wherein an end of the circuit board is fixedly connected to an end surface of the second housing facing the receiving cavity.
9. The voltage conversion device according to claim 1, wherein the first casing is integrally formed, a pressing portion extends from an end of the first casing close to the second casing, a fastening slot is formed in an end surface of the second casing facing away from the receiving cavity, and the pressing portion is bent and pressed against the fastening slot to fixedly mount the first casing relative to the second casing.
10. The voltage conversion device of claim 1, wherein the connector comprises a plug connector embedded in the second housing, and at least a portion of the plug connector protrudes from an end surface of the second housing away from the receiving cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921052421.3U CN210201710U (en) | 2019-07-05 | 2019-07-05 | Voltage conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921052421.3U CN210201710U (en) | 2019-07-05 | 2019-07-05 | Voltage conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210201710U true CN210201710U (en) | 2020-03-27 |
Family
ID=69869274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921052421.3U Active CN210201710U (en) | 2019-07-05 | 2019-07-05 | Voltage conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210201710U (en) |
-
2019
- 2019-07-05 CN CN201921052421.3U patent/CN210201710U/en active Active
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