Isolated voltage-stabilizing DC module

Abstract

The utility model relates to the technical field of voltage stabilization DC modules, in particular to an isolation type voltage stabilization DC module which comprises a shell, a base plate is installed at the bottom end in the shell, first connecting holes are formed in the four corners of the base plate, and second connecting holes are formed in the bottom end in the shell. The voltage-stabilizing DC module has the advantages that heat generated on the surface of the circuit board can be conducted downwards to the outside of the shell through the first heat conduction pipe, the heat dissipation and cooling speed is increased, heat generated on the surface of the circuit board can be conducted upwards to the outside of the shell through the second heat conduction pipe, internal heat collection is avoided, and safe use of the voltage-stabilizing DC module is kept; the connection part between the outer end part of the pin and the top end of the voltage-stabilizing DC module is in soft contact, so that buffer protection is provided for the surface of the pin, the pin is prevented from being damaged due to extrusion and bending between the connection part of the pin and the top end of the voltage-stabilizing DC module, and the safety of the pin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulated DC modules, and particularly relates to an isolated regulated DC module. Background Technique

[0002] With the development of electronic technology, various electronic devices have emerged continuously, and the corresponding devices have different requirements for power supply. In order to meet the needs of various electronic devices, voltage conversion devices are usually required to be arranged at the power supply position. The DC-DC switching power supply module is a commonly used power supply module. At present, there are many packaging forms of DC-DC power supply modules used in the market. The switching power supply module is enclosed through a packaging structure to ensure the normal use of the circuit board therein.

[0003] For example, the prior art Chinese patent publication number "CN214177151U" provides an isolated regulated DC-DC switching power supply module, which includes a housing and a circuit board installed inside the housing. Two pins are electrically connected to the top of the circuit board, namely the positive electrode and the negative electrode; a cover is welded to the inner top of the housing, and the tops of both pins penetrate through the cover. A casting port is opened in the middle of the cover, and a potting layer is arranged between the circuit board and the housing and the cover; a flattening component is sleeved outside the pin.

[0004] By moving the middle ring upward, the bottom end of the limiting rod at the bottom of the middle ring gradually rises to the inner top of the outer ring, and then the middle ring is moved downward. The above actions are repeated multiple times. The pins in the range passed by the middle ring are straightened under the action of the inner ring. Subsequently, the middle ring is moved to the highest point of the previous process, and the middle ring is kept at this height. With the other hand, the inner ring is pulled upward to straighten the pins at the top by the inner ring, which is convenient for subsequent use.

[0005] For the existing isolated regulated DC module, after the circuit board is encapsulated inside the housing, heat will be generated on the surface of the circuit board during use, and the heat dissipation is slow, resulting in heat accumulation inside the regulated DC module, which affects the safe use of the circuit board. At the same time, the connection between the outer end part of the pin and the top end of the regulated DC module is in hard contact, and no buffer protection is provided. When the pin is bent and knocked, it is easy to cause extrusion and bending damage between the connection of the pin and the top end of the regulated DC module, affecting the safety of the pin. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problem that after the circuit board is encapsulated inside the housing in the prior art, heat will be generated on the surface of the circuit board during use, and the heat dissipation is slow, resulting in heat accumulation inside the regulated DC module, which affects the safe use of the circuit board, and to propose an isolated regulated DC module.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] Design an isolated regulated DC module, including a housing. A backing plate is installed at the bottom end inside the housing. First connection holes are opened at the four corners of the backing plate. Second connection holes are opened at the bottom end inside the housing. First fastening bolts are inserted into the first connection holes and the second connection holes. A circuit board is installed at the top end of the backing plate. Pins are connected to the top end of the circuit board. First insertion holes are opened at the bottom end of the backing plate. Second insertion holes are opened at the bottom end of the base. First heat conduction tubes are inserted into the first insertion holes and the second insertion holes. A cover plate is installed at the top end of the housing. An encapsulation layer is provided between the cover plate and the housing. A sealing gasket is padded between the bottom end of the cover plate and the top end of the housing. Third connection holes are opened at the top end of the housing. Fourth connection holes are opened at the top end of the cover plate. Second fastening bolts are connected between the fourth connection holes and the third connection holes. Second heat conduction tubes pass through the surface of the cover plate and abut against the top end of the circuit board.

[0009] Furthermore, a glue filling hole is opened in the middle of the cover plate. A through hole is opened at the top end of the cover plate. The pins pass through the through hole. A protective sleeve is arranged at a position inside the through hole and wrapping the surface of the pins. A sealing ring is bonded at a position at the top end of the protective sleeve and covering the top end of the through hole.

[0010] Furthermore, the housing is of a rectangular structure, and the backing plate is of a rectangular plate structure and is horizontally arranged, and its length and width are both smaller than the length and width inside the housing.

[0011] Furthermore, the first connection holes and the second connection holes are both vertically arranged and are vertically aligned with each other. The second connection holes are of a threaded hole structure and are in threaded fit connection with the first fastening bolts.

[0012] Furthermore, the backing plate tightly covers the second insertion holes. The second insertion holes and the first insertion holes are both vertically arranged and are vertically aligned with each other.

[0013] Furthermore, the second insertion holes are of a threaded hole structure. The first heat conduction tubes are of an external threaded tube structure, are vertically arranged, and are made of heat-conducting silica gel material. Their top ends abut against the top ends of the first insertion holes, and their bottom ends protrude downward from the bottom end of the housing.

[0014] Furthermore, the third connection holes and the fourth connection holes are vertically aligned. The third connection holes are of a threaded hole structure and are in threaded fit connection with the second fastening bolts. The second heat conduction tubes are vertically arranged and are made of heat-conducting copper material. Their bottom ends are sealed, and their top ends are open and protrude upward from the cover plate.

[0015] Further, the pin is of a cylindrical structure, is vertically arranged, and is arranged in a staggered manner with the second heat conducting tube, and the protective sleeve is made of elastic rubber material.

[0016] The isolation type regulated DC module proposed by the utility model has the beneficial effects that:

[0017] 1. The circuit board of the utility model is installed inside the housing through a backing plate, and after being encapsulated by a potting layer, its bottom end is detachably inserted into the first heat conducting tube through the first insertion hole and the second insertion hole. The bottom end of the first heat conducting tube protrudes downward from the bottom end of the housing. At the same time, after the cover plate covers the housing, the bottom end of the second heat conducting tube on its surface abuts against the top end of the circuit board, and its top end protrudes upward from the cover plate. Therefore, during the use of the regulated DC module, when heat is generated on the circuit board, the heat on the surface of the circuit board can be conducted downward through the backing plate and then conducted downward to the outside of the housing through the first heat conducting tube, improving the speed of heat dissipation and cooling. It can also conduct the heat generated on the surface of the circuit board upward to the outside of the housing through the second heat conducting tube and press against the circuit board to stabilize it, reducing the shaking of the circuit board. Therefore, the heat dissipation speed inside the regulated DC module can be increased, internal heat accumulation can be avoided, and the safe use of the regulated DC module can be maintained.

[0018] 2. When the pin passes through the through hole on the surface of the cover plate, a protective sleeve is sleeved on the surface of the pin to space the contact with the cover plate, and the connection between the outer end part of the pin and the cover plate is sealed through a sealing ring. Therefore, the connection between the outer end part of the pin and the top end of the regulated DC module is in soft contact, providing buffer protection for the surface of the pin and preventing the connection between the pin and the top end of the regulated DC module from being damaged due to extrusion and bending, improving the safety of the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 is of the utility model Figure 1 schematic diagram of the overall structure;

[0021] Figure 3 is of the utility model Figure 1 cross-sectional view;

[0022] Figure 4 is of the utility model Figure 3 enlarged view of part A of the utility model;

[0023] Figure 5 is of the utility model Figure 3 enlarged view of part B of the utility model;

[0024] Figure 6 is of the utility model Figure 3 enlarged view of part C of the utility model.

[0025] In the figure: 1, housing; 2, backing plate; 3, first heat pipe; 4, circuit board; 5, potting layer; 6, second heat pipe; 7, pin; 8, cover plate; 9, potting hole; 10, second fastening bolt; 11, first fastening bolt; 12, first connection hole; 13, second connection hole; 14, first insertion hole; 15, second insertion hole; 16, fourth connection hole; 17, third connection hole; 18, gasket; 19, sealing ring; 20, protective sleeve; 21, perforation. Specific implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a diagram shows an isolated regulated DC module, including a housing 1, a backing plate 2 is installed at the inner bottom end of the housing 1, first connection holes 12 are opened at the four corners of the backing plate 2, a second connection hole 13 is opened at the inner bottom end of the housing 1, a first fastening bolt 11 is inserted into the first connection hole 12 and the second connection hole 13, a circuit board 4 is installed at the top end of the backing plate 2, pins 7 are connected to the top end of the circuit board 4, a first insertion hole 14 is opened at the bottom end of the backing plate 2, a second insertion hole 15 is opened at the bottom end of the base 1, a first heat pipe 3 is inserted into the first insertion hole 14 and the second insertion hole 15, a cover plate 8 is installed at the top end of the housing 1, a potting layer 5 is provided between the cover plate 8 and the housing 1, a gasket 18 is padded between the bottom end of the cover plate 8 and the top end of the housing 1, a third connection hole 17 is opened at the top end of the housing 1, a fourth connection hole 16 is opened at the top end of the cover plate 8, a second fastening bolt 10 is connected between the fourth connection hole 16 and the third connection hole 17, and a second heat pipe 6 passes through the surface of the cover plate 8 and abuts against the top end of the circuit board 4.

[0028] The circuit board 4 is installed inside the housing 1 through the backing plate 2. After being encapsulated by the potting layer 5, its bottom end is detachably inserted into the first heat pipe 3 through the first insertion hole 14 and the second insertion hole 15. The bottom end of the first heat pipe 3 protrudes downward from the bottom end of the housing 1. At the same time, after the cover plate 8 covers the housing 1, the bottom end of the second heat pipe 6 on its surface abuts against the top end of the circuit board 4, and its top end protrudes upward from the cover plate 8. Therefore, during the use of the regulated DC module, when the circuit board 4 generates heat, the heat on the surface of the circuit board 4 can be conducted downward through the backing plate 2 and conducted downward to the outside of the housing 1 through the first heat pipe 3, improving the speed of heat dissipation and cooling. It can also conduct the heat generated on the surface of the circuit board 4 upward to the outside of the housing 1 through the second heat pipe 6 and press against the circuit board 4 to stabilize it, reducing the shaking of the circuit board 4. Therefore, the heat dissipation speed inside the regulated DC module can be increased, internal heat accumulation can be avoided, and the safe use of the regulated DC module can be maintained.

[0029] The housing 1 is of a rectangular structure, and the backing plate 2 is of a rectangular plate structure and is horizontally arranged, and its length and width are both smaller than the length and width inside the housing 1; the first connection hole 12 and the second connection hole 13 are both vertically arranged and are vertically aligned with each other. The second connection hole 13 is of a threaded hole structure and is in threaded fit connection with the first fastening bolt 11.

[0030] The backing plate 2 tightly covers the second insertion hole 15. The second insertion hole 15 and the first insertion hole 14 are both vertically arranged and are vertically aligned with each other.

[0031] The second insertion hole 15 is of a threaded hole structure, and the first heat pipe 3 is of an external threaded pipe structure and is vertically arranged and is made of heat-conducting silica gel material. Its top end abuts against the top end of the first insertion hole 14, and its bottom end protrudes downward from the bottom end of the housing 1.

[0032] The third connection hole 17 and the fourth connection hole 16 are vertically aligned. The third connection hole 17 is of a threaded hole structure and is in threaded fit connection with the second fastening bolt 10. The second heat pipe 6 is vertically arranged and is made of heat-conducting copper material. Its bottom end is sealed, and its top end is open and protrudes upward from the cover plate 8.

[0033] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6, An isolated regulated DC module in the illustration, including a housing 1. A backing plate 2 is installed at the inner bottom end of the housing 1. First connection holes 12 are opened at the four corners of the backing plate 2. Second connection holes 13 are opened at the inner bottom end of the housing 1. A first fastening bolt 11 is inserted into the interiors of the first connection holes 12 and the second connection holes 13. A circuit board 4 is installed at the top end of the backing plate 2. Leads 7 are connected to the top end of the circuit board 4. First insertion holes 14 are opened at the bottom end of the backing plate 2. Second insertion holes 15 are opened at the bottom end of the base 1. A first heat pipe 3 is inserted into the interiors of the first insertion holes 14 and the second insertion holes 15. A cover plate 8 is installed at the top end of the housing 1. A potting layer 5 is provided between the cover plate 8 and the housing 1. A gasket 18 is padded between the bottom end of the cover plate 8 and the top end of the housing 1. Third connection holes 17 are opened at the top end of the housing 1. Fourth connection holes 16 are opened at the top end of the cover plate 8. A second fastening bolt 10 is connected between the fourth connection holes 16 and the third connection holes 17. A second heat pipe 6 passes through the surface of the cover plate 8 and abuts against the top end of the circuit board 4.

[0034] The circuit board 4 is installed inside the housing 1 through the backing plate 2 and is encapsulated through the potting layer 5. Its bottom end is detachably inserted into the first heat pipe 3 through the first insertion holes 14 and the second insertion holes 15. The bottom end of the first heat pipe 3 protrudes downward from the bottom end of the housing 1. At the same time, after the cover plate 8 covers the housing 1, the bottom end of the second heat pipe 6 on its surface abuts against the top end of the circuit board 4, and its top end protrudes upward from the cover plate 8. Therefore, during the use of the regulated DC module, when the circuit board 4 generates heat, the heat on the surface of the circuit board 4 can be conducted downward through the backing plate 2 and then conducted downward to the outside of the housing 1 through the first heat pipe 3, improving the speed of heat dissipation and cooling. It can also conduct the heat generated on the surface of the circuit board 4 upward to the outside of the housing 1 through the second heat pipe 6 and press against the circuit board 4 to stabilize it, reducing the shaking of the circuit board 4. Therefore, the heat dissipation speed inside the regulated DC module can be increased, internal heat accumulation can be avoided, and the safe use of the regulated DC module can be maintained.

[0035] A potting hole 9 is opened in the middle of the cover plate 8. A through hole 21 is opened at the top end of the cover plate 8. The leads 7 pass through the through hole 21. A protective sleeve 20 is provided at the interior of the through hole 21 and wraps the surface of the leads 7. A sealing ring 19 is bonded to the top end of the protective sleeve 20 and covers the top end of the through hole 21.

[0036] When the pin 7 passes through the through hole 21 on the surface of the cover plate 8, a protective sleeve 20 is sleeved on the surface of the pin 7 to space the contact with the cover plate 8, and the seal ring 19 is used to seal the connection between the pin 7 and the cover plate 8. Therefore, the connection between the outer end part of the pin 7 and the top end of the regulated DC module is in soft contact, providing buffer protection for the surface of the pin 7, avoiding damage caused by extrusion and bending between the connection of the pin 7 and the top end of the regulated DC module, and improving the safety of the pin 7.

[0037] The pin 7 is of a cylindrical structure and is vertically arranged, and is arranged offset from the second heat conduction tube 6. The protective sleeve 20 is made of elastic rubber material.

[0038] Working mode: The circuit board 4 is installed inside the housing 1 through the backing plate 2, and after being encapsulated by the potting layer 5, its bottom end is detachably inserted into the first heat conduction tube 3 through the first insertion hole 14 and the second insertion hole 15. The bottom end of the first heat conduction tube 3 protrudes downward from the bottom end of the housing 1. At the same time, after the cover plate 8 covers the housing 1, the bottom end of the second heat conduction tube 6 on its surface abuts against the top end of the circuit board 4, and its top end protrudes upward from the cover plate 8. Therefore, during the use of the regulated DC module, when the circuit board 4 generates heat, the heat on the surface of the circuit board 4 can be conducted downward through the backing plate 2 and then conducted downward to the outside of the housing 1 through the first heat conduction tube 3, improving the speed of heat dissipation and cooling. It can also conduct the heat generated on the surface of the circuit board 4 upward to the outside of the housing 1 through the second heat conduction tube 6 and press and stabilize the circuit board 4 to reduce the shaking of the circuit board 4. Therefore, the heat dissipation speed inside the regulated DC module can be improved, internal heat accumulation can be avoided, and the safe use of the regulated DC module can be maintained.

[0039] When the pin 7 passes through the through hole 21 on the surface of the cover plate 8, a protective sleeve 20 is sleeved on the surface of the pin 7 to space the contact with the cover plate 8, and the seal ring 19 is used to seal the connection between the pin 7 and the cover plate 8. Therefore, the connection between the outer end part of the pin 7 and the top end of the regulated DC module is in soft contact, providing buffer protection for the surface of the pin 7, avoiding damage caused by extrusion and bending between the connection of the pin 7 and the top end of the regulated DC module, and improving the safety of the pin 7.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An isolated voltage-stabilized DC module, comprising a housing (1), characterized in that: A backing plate (2) is installed at the bottom end of the inner part of the housing (1), and first connection holes (12) are opened at four corners of the backing plate (2). A second connection hole (13) is opened at the bottom end of the inner part of the housing (1), and first fastening bolts (11) are inserted into the first connection hole (12) and the second connection hole (13). A circuit board (4) is installed at the top end of the backing plate (2), and a pin (7) is connected to the top end of the circuit board (4). A first plug hole (14) is opened at the bottom end of the backing plate (2), and a second plug hole (15) is opened at the bottom end of the housing (1). The first plug hole (14) and the second plug hole (15) are connected to each other. 5), a first heat-conducting pipe (3) is inserted into the interior of the outer shell (1), a cover plate (8) is installed at the top end of the outer shell (1), a glue potting layer (5) is arranged between the cover plate (8) and the outer shell (1), a sealing gasket (18) is arranged between the bottom end of the cover plate (8) and the top end of the outer shell (1), a third connecting hole (17) is opened at the top end of the outer shell (1), a fourth connecting hole (16) is opened at the top end of the cover plate (8), a second fastening bolt (10) is connected between the fourth connecting hole (16) and the third connecting hole (17), and a second heat-conducting pipe (6) is passed through the surface of the cover plate (8) and abutting against the top end of the circuit board (4).

2. The isolated voltage-stabilized DC module according to claim 1, characterized in that: A glue injection hole (9) is provided in the middle of the cover plate (8), a through hole (21) is provided at the top end of the cover plate (8), the pin (7) passes through the through hole (21), a protective sleeve (20) is provided inside the through hole (21) and wraps around the surface of the pin (7), and a sealing ring (19) is bonded to the top end of the protective sleeve (20) and covers the top end of the through hole (21).

3. The isolated voltage-stabilized DC module according to claim 1, characterized in that: The outer shell (1) is a rectangular structure, and the pad (2) is a rectangular plate structure and is arranged horizontally, with a length and width that are smaller than the length and width of the interior of the outer shell (1).

4. The isolated voltage-stabilized DC module according to claim 1, characterized in that: The first connection hole (12) and the second connection hole (13) are both arranged vertically and aligned with each other vertically; the second connection hole (13) is a threaded hole structure and is threadedly matched with the first fastening bolt (11).

5. The isolated voltage-stabilized DC module according to claim 1, characterized in that: The backing plate (2) tightly covers the second plugging hole (15); the second plugging hole (15) and the first plugging hole (14) are both arranged vertically and aligned with each other vertically.

6. The isolated voltage-stabilized DC module according to claim 1, characterized in that: The second plug hole (15) is a threaded hole structure, the first heat-conducting pipe (3) is an external threaded pipe structure, and is vertically arranged and made of heat-conducting silicone material, with its top end abutting against the top end of the first plug hole (14) and its bottom end protruding downward from the bottom end of the housing (1).

7. The isolated voltage-stabilized DC module according to claim 1, characterized in that: The third connection hole (17) and the fourth connection hole (16) are aligned vertically; the third connection hole (17) is a threaded hole structure and is threadedly connected to the second fastening bolt (10); the second heat conducting pipe (6) is vertically arranged and made of heat conducting copper material; its bottom end is sealed and its top end is open and protrudes upward from the cover plate (8).

8. The isolated voltage-stabilized DC module according to claim 2, characterized in that: The pin (7) is a cylindrical structure and is arranged vertically and staggered with the second heat conducting pipe (6); the protective sleeve (20) is made of elastic rubber material.

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