CN110190759B

CN110190759B - Small-size direct-current stabilized voltage supply device

Info

Publication number: CN110190759B
Application number: CN201910469469.2A
Authority: CN
Inventors: 周建国; 周鹏
Original assignee: Ningbo Jiuyuan Electronics Co ltd
Current assignee: Ningbo Jiuyuan Electronics Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-12-29
Anticipated expiration: 2039-05-31
Also published as: CN110190759A

Abstract

The invention discloses a small-volume direct-current stabilized voltage supply device which adopts the technical scheme that the small-volume direct-current stabilized voltage supply device comprises a power supply main board provided with a power device, a front shell, a rear shell and a U-shaped radiator, wherein the front shell and the rear shell are fixedly connected; the radiator comprises a fixed bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are arranged on the left side and the right side of the fixed bottom plate; the power supply main board is fixed on the rear side of the fixed base board, the left side board and the right side board are respectively provided with a radiating fan and a radiating exhaust hole for supplying air to the power supply main board, and radiating slotted holes are formed in the left side and the right side of the front shell and the rear shell. The invention has the effects of effectively reducing the volume of the power supply device and improving the stability of the internal structure.

Description

Small-size direct-current stabilized voltage supply device

Technical Field

The invention relates to the technical field of power supply devices, in particular to a small-size direct-current stabilized voltage supply device.

Background

The power supply of the direct current stabilized power supply is mostly an alternating current power supply, and when the voltage or the load resistance of the alternating current power supply changes, the direct current output voltage of the voltage stabilizer can be kept stable. With the development of electronic equipment towards high precision, high stability and high reliability, the direct current stabilized voltage power supply puts high demands on the power supply of the electronic equipment.

Chinese patent No. CN207926423U discloses a dc power supply and a heat dissipation device thereof, wherein the heat dissipation device includes a heat dissipation module and a first fixing plate, the heat dissipation module includes a first heat sink and a second heat sink, the first heat sink and the second heat sink are arranged in parallel, and a gap is formed between the first heat sink and the second heat sink; the first fixing plate is located on the outer side of the heat dissipation module and connected with the heat dissipation module, and the first fixing plate is provided with a first fixing hole corresponding to the gap position and used for fixing the heat dissipation device.

And chinese patent with publication number CN208015605U discloses a small-volume dc voltage-stabilized power supply device, which comprises a housing and a transformer arranged in the housing, wherein the bottom of the housing is fixed with an L-shaped fixing bracket and a fixing column, the L-shaped fixing bracket is arranged at one side of the fixing column, a first circuit board is arranged in the housing, the first circuit board is fixedly connected with the bottom of the housing through the L-shaped fixing bracket and the fixing column, the first circuit board, the L-shaped fixing bracket, the fixing column and the housing enclose to form a space for accommodating the transformer, the transformer is arranged in the space, the transformer is electrically connected with the first circuit board, a second circuit board is fixed on the left side of the housing, and the second circuit board is electrically connected with the first circuit board.

However, the above-mentioned dc power supply, the heat dissipation device thereof and the small-sized dc voltage-stabilized power supply device are difficult to achieve the purpose of effectively reducing the size of the power supply device and improving the stability of the internal structure, and need to be improved.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a small-volume direct-current stabilized power supply device which has the effects of small volume and stable structure.

In order to achieve the purpose, the invention provides the following technical scheme:

a small-volume direct-current stabilized voltage supply device comprises a power supply main board provided with power devices, a front shell, a rear shell and a U-shaped radiator, wherein the front shell and the rear shell are fixedly connected with each other; the radiator comprises a fixed bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are arranged on the left side and the right side of the fixed bottom plate; the power supply main board is fixed on the rear side of the fixed base board, the left side board and the right side board are respectively provided with a radiating fan and a radiating exhaust hole for supplying air to the power supply main board, and radiating slotted holes are formed in the left side and the right side of the front shell and the rear shell.

By adopting the technical scheme, the cross section of the radiator consisting of the fixed bottom plate, the left side plate and the right side plate is U-shaped, the structure is simple, and the size is small; after the power supply main board provided with the power device is fixed on the fixed bottom board, the radiator can effectively absorb heat generated on the power supply main board, and correspondingly, the radiator is fixedly installed through the inserting columns and the limiting inserting columns, so that the purposes of effectively reducing the size of the power supply device and improving the stability of the internal structure are achieved; when the air is supplied to the power supply main board through the heat dissipation fan on the left side board, the air flows to one end of the heat dissipation exhaust hole from one end of the heat dissipation fan, and is exhausted from the direct-current power supply device through the heat dissipation exhaust hole after heat on the power supply main board and the heat dissipation device is taken away in the flow, so that the effect of remarkably improving the heat dissipation performance while the size of the power supply device is reduced is achieved.

The invention is further configured to: four edges of the fixed base plate are provided with base plate fixing holes, and the inserting column comprises a conical top column and a clamping block, wherein the top of the top column is abutted against the front side face of the fixed base plate, and the clamping block is inserted into the corresponding base plate fixing hole.

Through adopting above-mentioned technical scheme, when installation PMKD, aim at fixture block and corresponding bottom plate fixed orifices, and then press PMKD to preceding casing, can make in the fixture block card goes into the bottom plate fixed orifices and with the fore-set butt of taper, mounting structure is simple and stable, the practicality is high.

The invention is further configured to: each support pillar is provided with two bilaterally symmetrical clamping blocks, a spacing groove is formed between the two corresponding clamping blocks, and the two corresponding clamping blocks are in interference connection with the bottom plate fixing hole.

Through adopting above-mentioned technical scheme, further reduce the degree of difficulty of installation PMKD to promote the stability of being connected between PMKD and the procapsid simultaneously.

The invention is further configured to: and springs with two ends respectively inserted into the two clamping blocks are arranged in the spacing grooves.

By adopting the technical scheme, when the two clamping blocks are inserted into the corresponding bottom plate fixing holes and are close to each other, the spring deforms and generates elastic restoring force which drives the two clamping blocks to move away from each other, so that a stable interference fit fixing state is formed between the two clamping blocks which are in bilateral symmetry and the corresponding bottom plate fixing holes.

The invention is further configured to: the limiting insertion column is provided with a limiting insertion groove with the width matched with the thickness of the left side plate and the right side plate, and the two sides of the limiting insertion groove are provided with fillets.

Through adopting above-mentioned technical scheme, insert corresponding spacing slot through left side board and right side board and then reach the purpose of stable fixed radiator to when pegging graft fixed left side board and right side board, play the effect that is showing the fixed degree of difficulty of reduction radiator through the radius angle.

The invention is further configured to: the heat radiation fan is positioned at the lower end of the left side plate, and the heat radiation row holes are positioned at the lower side of the right side plate.

Through adopting above-mentioned technical scheme, radiator fan sets up with the heat dissipation exhaust vent relatively, promotes the mobility of air and heat exhaust efficiency.

The invention is further configured to: and the lower side of the left side plate and the upper side of the right side plate are respectively provided with a bottom wire groove and a top wire groove for a connecting cable to pass through.

Through adopting above-mentioned technical scheme, bottom line groove and top line groove are used for cable run to arrange and fix, avoid hindering connecting cable's connection and use, and the practicality is strong.

The invention is further configured to: four edges of the fixing bottom plate are provided with mainboard fixing threaded holes, and the power supply mainboard passes through four fixing bolts which pass through the power supply mainboard and are in threaded connection with the corresponding mainboard fixing threaded holes.

Through adopting above-mentioned technical scheme, fixing bolt plays and fixes the effect on PMKD with the power mainboard, is showing the fixed degree of difficulty of installation that reduces the power mainboard to make the last heat that produces of power mainboard dispel the heat on transmitting the radiator in time, showing the heat dispersion that promotes this cooling system.

The invention is further configured to: the front shell is internally provided with four connecting and fixing front columns which are respectively positioned at four corners, the rear shell is provided with four connecting and fixing rear columns which are respectively abutted against the connecting and fixing front columns, and the connecting and fixing front columns and the connecting and fixing rear columns are fixed through bolts which are inserted into the connecting and fixing rear columns and are in threaded connection with the connecting and fixing front columns.

Through adopting above-mentioned technical scheme, the bolt is connected with corresponding fixed preceding post threaded connection of being connected again and can reach the effect of fixed connection procapsid and back casing after inserting in the fixed back post of connection, further reduces the fixed degree of difficulty of installation of procapsid and back casing, and effectively saves the installation fixed space of procapsid and back casing, reaches the purpose of this power supply unit volume of effectual control.

The invention is further configured to: the periphery one side of procapsid is provided with the limit sand grip, back casing be provided with the limit recess that the limit sand grip matches, the top of procapsid and back casing is provided with the handle.

Through adopting above-mentioned technical scheme, the limit sand grip and the limit recess of mutual matching are behind the accordant connection, and rethread bolt fixed connection fixes the fore-stock and connects fixed back post and reach the purpose of stable connection procapsid and back casing to play after limit sand grip and limit recess match are fixed and avoid forming relative displacement between procapsid and the back casing and influence the fixed efficiency of installation of procapsid and back casing, the practicality is strong.

In conclusion, the invention has the following beneficial effects:

1. the U-shaped radiator is connected with and fixed with the power supply main board, and the purpose of effectively reducing the volume of the power supply device is achieved after a bracket for installing and fixing the power supply straight board is removed;

2. the top column is abutted with the fixed bottom plate, the clamping block is inserted into the bottom plate fixing hole, and then the limiting insertion column is abutted with the corresponding left side plate or right side plate so that the radiator is stably fixed between the front shell and the rear shell, and the fixing stability of the radiator and the direct-current power supply device is improved, so that the situation that the stable connection of an internal circuit of the direct-current power supply device is influenced due to the fact that a power supply main board and the direct-current power supply device move relatively is effectively avoided;

3. through radiator and the straight board lug connection of power, and then play and show the effect that promotes the radiating effect, effectively prolong this power supply unit's life.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic view of an exploded structure of the present embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is a schematic structural view of the rear case of the present embodiment;

fig. 5 is an enlarged schematic view of a portion B of fig. 4.

Description of reference numerals: 1. a front housing; 11. a display screen; 12. an operation output panel; 13. connecting and fixing the front column; 14. a top pillar; 15. a clamping block; 151. a spacing groove; 16. a side convex strip; 2. a rear housing; 21. limiting and inserting the column; 211. limiting slots; 212. rounding off; 22. connecting and fixing the rear column; 23. a side groove; 3. a handle; 4. a heat dissipation slot; 5. a heat sink; 51. fixing the bottom plate; 511. the main board is fixed with a threaded hole; 512. a bottom plate fixing hole; 52. a left side plate; 521. a heat radiation fan; 522. a bottom wire groove; 53. a right side plate; 531. radiating row holes; 532. a top wire groove; 6. a power supply main board; 61. and (5) fixing the bolt.

Detailed Description

In order to make the technical solution and advantages of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a small-sized DC voltage-stabilized power supply device comprises a front casing 1 and a rear casing 2 which are fixedly connected, and a handle 3 arranged at the top ends of the front casing 1 and the rear casing 2. The handle 3 serves to significantly improve the portability of the power supply device. A display screen 11 and an operation output panel 12 are arranged on the front side of the front casing 1, and heat dissipation slot holes 4 are arranged on the lower ends of the two sides of the front casing 1 and the rear casing 2.

As shown in fig. 1 and 2, a power supply main board 6 to which power devices are connected and fixed to a display panel 11 and an operation output panel 12, and a U-shaped heat sink 5 are provided in the front case 1 and the rear case 2. The heat sink 5 includes a fixed base plate 51, and left and

right side plates

52 and 53 provided on the left and right sides of the fixed base plate 51. The power supply main board 6 is fixed to the rear side of the fixed base plate 51. The left side plate 52 and the right side plate 53 are respectively provided with a heat radiation fan 521 for blowing air to the power supply main board 6 and a heat radiation exhaust hole 531. The cross section of the radiator 5 composed of the fixed bottom plate 51, the left side plate 52 and the right side plate 53 is U-shaped, the structure is simple, the size is small, after the power supply main board 6 provided with the power device is fixed on the fixed bottom plate 51, the radiator 5 can effectively absorb heat generated on the power supply main board 6, when air is supplied to the power supply main board 6 through the radiator fan 521 on the left side plate 52, air flows to one end of the radiating exhaust hole 531 from one end of the radiator fan 521, and is exhausted from the power supply device through the radiating exhaust hole 531 after heat on the power supply main board 6 and the radiator 5 is taken away in the flow, and the effect of remarkably improving the radiating performance while reducing the size of the power supply device is achieved.

As shown in fig. 2 and 3, four insertion posts are disposed on the front housing 1 and respectively inserted into four corners of the fixed bottom plate 51, and a plurality of limit insertion posts 21 (see fig. 4) are disposed on both left and right sides of the rear housing 2 and respectively fixed to the left side plate 52 and the right side plate 53, and the heat sink 5 is mounted and fixed to the limit insertion posts 21 through the insertion posts, so as to effectively reduce the size of the power supply device and improve the stability of the internal structure. It should be noted that the bottom plate fixing holes 512 are provided at four corners of the fixing bottom plate 51. The plug-in post comprises a tapered top post 14 with the top abutting against the front side surface of the fixed bottom plate 51 and a fixture block 15 inserted into the corresponding bottom plate fixing hole 512. Therefore, when the fixing bottom plate 51 is installed, the fixture block 15 is aligned with the corresponding bottom plate fixing hole 512, and then the fixing bottom plate 51 is pressed towards the front shell 1, so that the fixture block 15 can be clamped into the bottom plate fixing hole 512 and abutted against the tapered top pillar 14, and the installation structure is simple and stable, and high in practicability. In order to improve the fixing stability of the fixing base plate 51, two bilateral symmetry fixture blocks 15 are further arranged on each top pillar 14, a spacing groove 151 is formed between each two corresponding fixture blocks 15, the two corresponding fixture blocks 15 are in interference connection with the base plate fixing holes 512, and the connecting stability between the fixing base plate 51 and the front shell 1 is improved while the difficulty in installing the fixing base plate 51 is further reduced. Meanwhile, springs with two ends respectively inserted into the two fixture blocks 15 are arranged in the spacing groove 151, and when the two fixture blocks 15 are inserted into the corresponding bottom plate fixing holes 512 and approach each other, the springs deform and generate elastic restoring force which drives the two fixture blocks 15 to move away from each other, so that a stable interference fit fixing state is formed between the two fixture blocks 15 which are bilaterally symmetrical and the corresponding bottom plate fixing holes 512.

As shown in fig. 4 and 5, the limiting insertion post 21 is provided with a limiting insertion slot 211 with a width matched with the thickness of the left side plate 52 and the right side plate 53, and then the left side plate 52 and the right side plate 53 are inserted into the corresponding limiting insertion slot 211 to achieve the purpose of stabilizing and fixing the heat sink 5, and the two sides of the limiting insertion slot 211 are both provided with a fillet 212, so that when the left side plate 52 and the right side plate 53 are fixed in an insertion manner, the effect of remarkably reducing the fixing difficulty of the heat sink 5 is achieved through the guidance of the fillet 212.

As shown in fig. 2 and 3, the heat dissipating fan 521 is located at the lower end of the left side plate 52, and the heat dissipating hole 531 is located at the lower side of the right side plate 53, the heat dissipating fan 521 and the heat dissipating hole 531 are set up relatively, so that the air flowability and the heat dissipating efficiency are improved, the shielding of the left side plate 52 and the right side plate 53 effectively prevents dust from adhering to the power supply main board 6, and the service life of the power supply main board 6 is prolonged. A bottom wire groove 522 and a top wire groove 532 through which a connection cable passes are provided on the lower side of the left side plate 52 and the upper side of the right side plate 53, respectively. And then make the bottom line groove 522 and the top line groove 532 that are used for cable run arrangement and fix play and effectively avoid hindering the connection use effect of connecting cable, and the practicality is strong. Main board fixing screw holes 511 are provided at four corners of the fixing base plate 51. The power supply main board 6 is fixed by four fixing bolts 61 penetrating through the power supply main board 6 and screwed into the corresponding main board fixing screw holes 511. Therefore, the fixing bolt 61 can fix the power supply main board 6 on the fixing bottom plate 51, the difficulty in mounting and fixing the power supply main board 6 is remarkably reduced, heat generated on the power supply main board 6 is timely transmitted to the radiator 5 for radiating, and the radiating performance of the radiating system is remarkably improved.

As shown in fig. 3 and 5, four fixed-connection front pillars 13 are provided in the front housing 1 at four corners, respectively. And four fixed-connection rear pillars 22 that are respectively abutted against the corresponding fixed-connection front pillars 13 are provided on the rear case 2. Connect fixed front column 13 and connect fixed rear column 22 through insert connect fixed rear column 22 in and with connect fixed front column 13 threaded connection's bolt fastening, and then in bolt insert connect fixed rear column 22 after again with corresponding connect fixed front column 13 threaded connection can reach the effect of fixed connection procapsid 1 and back casing 2, further reduce the fixed degree of difficulty of installation of procapsid 1 and back casing 2, and effectively save the installation fixed space of procapsid 1 and back casing 2, reach the purpose of this power supply unit volume of effectual control. Meanwhile, periphery one side at preceding casing 1 is provided with limit sand grip 16, and be provided with the limit recess 23 with limit sand grip 16 matching at back casing 2, and then make the limit sand grip 16 and the limit recess 23 of mutual matching behind the accordant connection, rethread bolt fixed connection fixes preceding post 13 and connects fixed back post 22 and reach the purpose of stably connecting procapsid 1 and back casing 2, and play after limit sand grip 16 and limit recess 23 match fixedly and avoid forming relative displacement between procapsid 1 and the back casing 2 and influence the fixed efficiency in installation of procapsid 1 and back casing 2, therefore, the clothes hanger is strong in practicability.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present invention may occur to those skilled in the art without departing from the principle of the present invention, and such modifications and embellishments should also be considered as within the scope of the present invention.

Claims

1. The utility model provides a little volume direct current constant voltage power supply device, is including power mainboard (6) that are provided with power device, its characterized in that: the heat dissipation device also comprises a front shell (1) and a rear shell (2) which are fixedly connected, and a U-shaped heat sink (5) which is fixed between the front shell (1) and the rear shell (2); the radiator (5) comprises a fixed bottom plate (51), a left side plate (52) and a right side plate (53) which are arranged on the left side and the right side of the fixed bottom plate (51), four inserting columns which are respectively inserted into four corners of the fixed bottom plate (51) are arranged on the front shell (1), and a plurality of limiting inserting columns (21) which are respectively abutted and fixed with the corresponding left side plate (52) and right side plate (53) are arranged on the left side and the right side of the rear shell (2); the power supply main board (6) is fixed on the rear side of the fixed bottom board (51), the left side board (52) and the right side board (53) are respectively provided with a radiating fan (521) and a radiating exhaust hole (531) which supply air to the power supply main board (6), and the left side and the right side of the front shell (1) and the rear shell (2) are respectively provided with a radiating slotted hole (4); four corners of the fixed bottom plate (51) are respectively provided with a bottom plate fixing hole (512), and each insertion column comprises a conical top column (14) the top of which is abutted against the front side surface of the fixed bottom plate (51) and a clamping block (15) inserted into the corresponding bottom plate fixing hole (512); each ejection column (14) is provided with two clamping blocks (15) which are symmetrical left and right or up and down, a spacing groove (151) is formed between the two corresponding clamping blocks (15), and the two corresponding clamping blocks (15) are in interference connection with a bottom plate fixing hole (512); and springs with two ends respectively inserted into the two clamping blocks (15) are arranged in the spacing grooves (151).

2. A small-sized dc regulated power supply apparatus according to claim 1, wherein: spacing post (21) are provided with width with spacing slot (211) that left side board (52) and right side board (53) thickness match, the both sides of spacing slot (211) all are provided with radius angle (212).

3. A small-sized dc regulated power supply apparatus according to claim 1, wherein: the heat radiation fan (521) is positioned at the lower end of the left side plate (52), and the heat radiation exhaust hole (531) is positioned at the lower side of the right side plate (53).

4. A small-sized dc regulated power supply apparatus according to claim 1, wherein: and a bottom line groove (522) and a top line groove (532) for connecting cables to pass through are respectively arranged on the lower side of the left side plate (52) and the upper side of the right side plate (53).

5. A small-sized dc regulated power supply apparatus according to claim 1, wherein: four edges of the fixed bottom plate (51) are provided with main plate fixing threaded holes (511), the power main plate (6) penetrates through four holes of the power main plate (6) and is fixed with the corresponding fixing bolts (61) in threaded connection with the main plate fixing threaded holes (511).

6. A small-sized dc regulated power supply apparatus according to claim 1, wherein: be provided with four fixed front column of connection (13) that are located four edges respectively in procapsid (1), be provided with four on back casing (2) respectively with corresponding fixed rear column of connection (22) of fixed front column of connection (13) butt, fixed front column of connection (13) and fixed rear column of connection (22) are through inserting fixed rear column of connection (22) in and with fixed front column of connection (13) threaded connection's bolt fastening.

7. A small-sized dc regulated power supply apparatus according to claim 6, wherein: the periphery one side of procapsid (1) is provided with limit sand grip (16), back casing (2) be provided with limit recess (23) that limit sand grip (16) match, the top of procapsid (1) and back casing (2) is provided with handle (3).