Direct-current power supply device

Abstract

The utility model discloses a direct-current power supply device, and relates to the technical field of direct-current power supplies. The heat dissipation device comprises a shell and a front end plate, the front end plate is provided with an installation base located in the shell, the front end plate and the shell are in abutting lap joint and are fixedly connected through bolts, a plurality of heat dissipation holes are formed in the opposite sides of the shell, an air inlet is formed in the tail of the shell, a heat dissipation fan is arranged on the installation base, and the air inlet is communicated with the heat dissipation fan. And a filter screen corresponding to the air inlet is arranged at the tail part of the shell. During normal use, filtered external air is introduced into the shell through the heat dissipation fan, heat is taken away from the heat dissipation holes through flowing of the external air, so that the heat dissipation efficiency is improved, when the heat dissipation device is not used, the heat dissipation holes can be shielded, external dust and impurities are prevented from entering the shell through the heat dissipation holes, and the heat dissipation efficiency is improved. And the risk that internal parts are damaged is reduced, so that the device is more practical.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of direct-current power sources, in particular to a direct-current power source device. BACKGROUND

[0002] A direct-current power source is a device for maintaining a steady voltage and current in a circuit. The direct-current power source has two electrodes, a positive electrode and a negative electrode. The positive electrode has a high potential, and the negative electrode has a low potential. When the two electrodes are connected to the circuit, a constant potential difference can be maintained between the two ends of the circuit, thereby forming a current from the positive electrode to the negative electrode in the external circuit. When the direct-current power source is in use, a large amount of heat will be generated. In order to improve the heat dissipation efficiency, a plurality of heat dissipation holes are usually formed on the shell of the direct-current power source. However, when the direct-current power source is not in use, foreign dust can easily enter the interior of the direct-current power source through the heat dissipation holes, which can cause damage to the internal components of the direct-current power source. Therefore, the direct-current power source device is proposed. CONTENT OF THE UTILITY MODEL

[0003] The application aims to solve the technical problem that when the direct-current power source is not in use, foreign dust can easily enter the interior of the direct-current power source through the heat dissipation holes, which can cause damage to the internal components of the direct-current power source. The application provides a direct-current power source device.

[0004] In order to achieve the above-mentioned purpose, the application specifically adopts the following technical scheme:

[0005] The direct-current power source device comprises a shell and a front end plate. An installation base is arranged on the front end plate and located in the shell. The front end plate is abutted and overlapped with the shell, and the two are fixed by bolts. A plurality of heat dissipation holes are formed on the opposite sides of the shell. An air inlet is formed on the tail of the shell. A heat dissipation fan is arranged on the installation base. A filter screen corresponding to the air inlet is arranged on the tail of the shell. A fixing shell in the shape of U is arranged on the opposite sides of the shell. A roller is rotatably arranged in the fixing shell. A shielding cloth is wound on the roller. Two sliding blocks are slidably arranged on the fixing shell. A moving rod is arranged between the two sliding blocks. The free end of the shielding cloth is connected with the moving rod. A transmission member is arranged on the fixing shell. When the roller rotates, the two sliding blocks are synchronously driven to slide by the transmission member.

[0006] Further, two guide rollers are rotatably arranged on the fixing shell. The free end of the shielding cloth passes between the two guide rollers.

[0007] Further, the transmission member comprises two lead screws rotatably arranged on the fixing shell. The two sliding blocks are threadedly connected with the two lead screws. The lead screws and the roller are connected by a bevel gear pair.

[0008] Furthermore, the two rollers are connected by a pulley assembly.

[0009] Furthermore, the outer casing is provided with dustproof components that are the same number as and correspond one-to-one with the heat dissipation holes. The dustproof components include two fixing plates that are both disposed inside the outer casing. A channel communicating with the heat dissipation holes is formed between the two fixing plates. Multiple symmetrically staggered inclined plates that are all facing the heat dissipation holes are disposed in the channel.

[0010] Furthermore, the filter screen is provided with a locking block and two positioning holes, and the outer shell is provided with two positioning posts and a locking element. The two positioning posts are respectively inserted into the two positioning holes, and the locking element locks or unlocks the locking block.

[0011] Furthermore, the locking element includes a locking rod slidably disposed on the housing, a return spring is disposed between the locking rod and the housing, and a wedge-shaped block is disposed at the free end of the locking rod that abuts against the locking block.

[0012] Furthermore, a fixing frame is provided on the mounting base, and multiple conical cylinders are provided on the fixing frame, with the tips of the conical cylinders facing the cooling fan.

[0013] The beneficial effects of this application are as follows: During normal use, the cooling fan introduces filtered outside air into the casing, and the flow of outside air carries away heat through multiple heat dissipation holes to improve heat dissipation efficiency. When not in use, the multiple heat dissipation holes can be covered to prevent external dust and impurities from entering the casing through the heat dissipation holes, thereby reducing the risk of damage to internal components, thus making it more practical. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural view of this application;

[0015] Figure 2 This is a three-dimensional sectional view of this application;

[0016] Figure 3 This application Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a three-dimensional sectional view from another perspective of this application;

[0018] Figure 5 This application Figure 4 Enlarged view of point B in the middle;

[0019] Figure 6 This is another perspective sectional view of this application;

[0020] Figure 7 This application Figure 6 Enlarged view of point C in the middle;

[0021] Figure 8 is another perspective view of the application;

[0022] Figure 9 is another perspective view of the application Figure 8 is an enlarged view of D in FIG. 1.

[0023] Reference signs: 1, shell; 2, front end plate; 3, mounting base; 4, heat dissipation hole; 5, air inlet; 6, heat dissipation fan; 7, filter screen; 8, fixed shell; 9, roller; 10, shielding cloth; 11, sliding block; 12, moving rod; 13, guide roller; 14, screw rod; 15, bevel gear pair; 16, pulley assembly; 17, fixed plate; 18, inclined plate; 19, locking block; 20, positioning hole; 21, positioning column; 22, locking rod; 23, return spring; 24, wedge block; 25, fixed frame; 26, conical cylinder. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application.

[0025] As Figures 1-9 shown, one embodiment of the application proposes a direct current power supply device, which comprises a shell 1 and a front end plate 2. The shell 1 is configured as a shell structure with an open front end. The front end plate 2 is in a vertical direction. The front end plate 2 is provided with a mounting base 3 located in the shell 1. The mounting base 3 is used to mount the parts of the direct current power supply. The front end plate 2 is in abutment with the shell 1 and is fixed by bolt connection. The front end plate 2 is configured with a counterbore. The shell 1 is configured with a threaded hole in communication with the counterbore. A bolt in threaded cooperation with the threaded hole is movably inserted into the counterbore to achieve the connection and fixation of the front end plate 2 and the shell 1. The opposite sides of the shell 1 are each configured with a plurality of heat dissipation holes 4. The tail part of the shell 1 is configured with an air inlet 5. The tail part of the shell 1 refers to the side far away from the opening, i.e. the rear end of the shell 1.

[0026] The distinguished technical features of the application further include that the mounting base 3 is provided with a heat dissipation fan 6, the axis of the heat dissipation fan 6 is in a horizontal direction, the tail of the shell 1 is provided with a filter screen 7 corresponding to the air inlet 5, the filter screen 7 is in a vertical direction, the opposite sides of the shell 1 are both provided with a fixed shell 8 configured in a U shape, the fixed shell 8 is in a vertical direction and is fixedly arranged on the shell 1, a roller 9 is rotatably arranged in the fixed shell 8, the axis of the roller 9 is in a vertical direction, a shielding cloth 10 is wound around the roller 9, two sliding blocks 11 are slidingly arranged on the fixed shell 8, the two sliding blocks 11 are distributed in an upper and lower spaced manner and both slide in a horizontal direction, a moving rod 12 is arranged between the two sliding blocks 11, the moving rod 12 is in a vertical direction and both ends thereof are fixedly connected with the two sliding blocks 11 respectively, the free end of the shielding cloth 10 is connected with the moving rod 12, the free end of the shielding cloth 10 is fixedly connected with the moving rod 12, and the fixed shell 8 is provided with a transmission member, when the roller 9 rotates, the two sliding blocks 11 are driven to synchronously slide by the transmission member;

[0027] In the initial state, the application is in a non-use state, at this time, the two sliding blocks 11 located on the same fixed shell 8 are both located at the limit position, the moving rod 12 is away from the roller 9, and the shielding cloth 10 is in an unfolded state, the plurality of heat dissipation holes 4 on one side of the shell 1 are shielded by the unfolded shielding cloth 10, so as to avoid that the external dust and impurities enter the inside of the shell 1 through the heat dissipation holes 4, when in use, a large amount of heat will be emitted from the inside of the shell 1, so as to drive the roller 9 to rotate forward, the shielding cloth 10 is wound by the roller 9, at the same time, the two sliding blocks 11 are driven to synchronously slide to the initial position by the transmission member, the moving rod 12 is driven to slide close to the roller 9 by the two sliding blocks 11, the plurality of heat dissipation holes 4 on one side of the shell 1 are unshielded by the wound shielding cloth 10, so that the heat dissipation fan 6 works, the external air enters the shell 1 through the air inlet 5, the dust and impurities in the external air are blocked by the filter screen 7, the heat is taken away from the plurality of heat dissipation holes 4 by the flow of the external air, so as to improve the heat dissipation efficiency, on the contrary, when not in use, the heat dissipation fan 6 stops working, the roller 9 is driven to rotate reversely, at the same time, the two sliding blocks 11 are driven to synchronously slide to the limit position by the transmission member, the moving rod 12 is driven to slide away from the roller 9 by the two sliding blocks 11, and the shielding cloth 10 is in the unfolded state and shields the plurality of heat dissipation holes 4 on one side of the shell 1 again;

[0028] In summary, when in normal use, the application introduces the filtered external air into the shell 1 by the heat dissipation fan 6, the heat is taken away from the plurality of heat dissipation holes 4 by the flow of the external air, so as to improve the heat dissipation efficiency, when not in use, the plurality of heat dissipation holes 4 can be shielded, so as to avoid that the external dust and impurities enter the inside of the shell 1 through the heat dissipation holes 4, thereby reducing the risk of damage of the internal parts, and therefore the application is more practical.

[0029] As Figure 3As shown, a further technical solution of this application is disclosed. Two guide rollers 13 are rotatably arranged on the fixed shell 8. The axes of the two guide rollers 13 are both vertical and spaced apart. The free end of the shielding cloth 10 passes through the space between the two guide rollers 13.

[0030] Referring to the above, when the shielding cloth 10 is rolled up or unrolled, the two guide rollers 13 guide and limit the shielding cloth 10 together, while preventing the shielding cloth 10 from wrinkling.

[0031] like Figure 3 As shown, the specific structure of the transmission component of this application is disclosed. The transmission component includes two lead screws 14 that are rotatably mounted on the fixed housing 8. The axes of the two lead screws 14 are both horizontal and distributed vertically at intervals. The thread directions of the two lead screws 14 are opposite. Two sliders 11 are threadedly engaged with the two lead screws 14 respectively. The lead screws 14 and the roller 9 are connected by a bevel gear pair 15. The bevel gear pair 15 includes two meshing bevel gears. The two bevel gears are respectively fixed on the lead screws 14 and the roller 9. The two bevel gear pairs 15 are symmetrically distributed.

[0032] Referring to the above, when the roller 9 rotates, it drives the two lead screws 14 to rotate synchronously through the two bevel gear pairs 15. Since the two bevel gear pairs 15 are symmetrically distributed, the rotation directions of the two lead screws 14 are opposite. Since the thread directions of the two lead screws 14 are opposite, the two sliders 11 slide synchronously due to the thread action, so as to realize that when the roller 9 rotates, it drives the two sliders 11 to slide synchronously.

[0033] like Figure 3 As shown, this application discloses a further technical solution for the synchronous rotation of two rollers 9. The two rollers 9 are connected by a pulley assembly 16. The pulley assembly 16 includes two pulleys and a connecting belt. The two pulleys are respectively fixed on the two rollers 9, and the connecting belt is wound around the two pulleys.

[0034] Referring to the above, when in use, driving one of the rollers 9 to rotate will drive the other roller 9 to rotate synchronously through the pulley assembly 16, which can not only improve the synchronization of use, but also make the operation more convenient.

[0035] like Figure 7 As shown, a further technical solution of this application is disclosed. The outer shell 1 is provided with dustproof components that are the same number as the heat dissipation holes 4 and correspond one-to-one. The dustproof components include two fixing plates 17 that are both provided inside the outer shell 1. The fixing plates 17 are vertical and fixed inside the outer shell 1. A channel communicating with the heat dissipation holes 4 is formed between the two fixing plates 17. Multiple symmetrically staggered inclined plates 18 that are all facing the heat dissipation holes 4 are provided in the channel. The inclined plates 18 are vertical and fixed in the channel.

[0036] With reference to the foregoing, in use, the inclined plates 18 form a structure similar to a one-way valve, and external air can carry heat through the passages and the heat dissipation holes 4 in turn, while external dust and impurities are difficult to pass through the passages, thereby further preventing the external dust and impurities from entering the inside of the shell 1.

[0037] As shown in Figure 9 Further technical solutions of the present application are disclosed, which realize disassembly and assembly of the filter screen 7. The filter screen 7 is provided with a locking block 19 and two positioning holes 20. The locking block 19 is fixedly arranged on the filter screen 7. The two positioning holes 20 are vertically arranged and spaced apart. The shell 1 is provided with two positioning columns 21 and a locking member. The positioning columns 21 are vertically arranged and fixedly arranged on the shell 1. The two positioning columns 21 are respectively inserted into the two positioning holes 20. The locking member locks or unlocks the locking block 19.

[0038] With reference to the foregoing, in use, the filter screen 7 is in an installed state. The two positioning columns 21 are respectively inserted into the two positioning holes 20. The locking member locks the locking block 19. The filter screen 7 cannot move. Conversely, when not in use, the locking member can unlock the locking block 19. The filter screen 7 moves upward until the two positioning columns 21 are respectively withdrawn from the two positioning holes 20. Thus, the filter screen 7 is disassembled to facilitate cleaning or replacement of the filter screen 7. Then, the filter screen 7 is kept in a vertical direction and moves downward until the two positioning columns 21 are respectively inserted into the two positioning holes 20. The locking member locks the locking block 19. The filter screen 7 cannot move. Thus, the filter screen 7 can be reassembled.

[0039] As shown in Figure 9 The specific structure of the locking member is disclosed. The locking member includes a locking rod 22 slidingly arranged on the shell 1. The locking rod 22 slides in a horizontal direction. A return spring 23 is arranged between the locking rod 22 and the shell 1. The return spring 23 is in a horizontal direction and has two ends fixedly connected to the locking rod 22 and the shell 1, respectively. A wedge-shaped block 24 is arranged on a free end of the locking rod 22 and abuts against the locking block 19. The wedge-shaped block 24 is in a horizontal direction and is fixedly arranged on the free end of the locking rod 22.

[0040] With reference to the foregoing, in the initial state, the filter screen 7 is in the mounted state, the locking block 19, the locking rod 22 and the wedge block 24 are all in the initial position, the flat surface of the wedge block 24 is in abutment with the locking block 19, and the reset spring 23 is in the natural state. Since the wedge block 24 blocks, the locking block 19 and the filter screen 7 cannot move upward to achieve locking of the locking block 19. When the filter screen 7 needs to be disassembled, the locking rod 22 is slid to the limit position, driving the wedge block 24 to move away from the locking block 19, and the reset spring 23 is stretched. Since the wedge block 24 is blocked, the locking block 19 and the filter screen 7 can move upward. Then the locking rod 22 is loosened, the reset spring 23 is reset to the natural state, and the locking rod 22 and the wedge block 24 move to the initial position together to achieve unlocking of the locking block 19. Conversely, when the filter screen 7 is reinstalled, the locking block 19 first abuts the inclined surface of the wedge block 24. Through the transition effect of the inclined surface, the locking rod 22 and the wedge block 24 are forced to move to the limit position together, the reset spring 23 is stretched, and then the reset spring 23 is reset to the natural state. The locking rod 22 and the wedge block 24 move to the initial position together, and the flat surface of the wedge block 24 abuts the locking block 19, thereby relocking the locking block 19.

[0041] As shown in Figure 5 Further technical solutions of the present application are disclosed. The mounting base 3 is provided with a fixing frame 25, the fixing frame 25 is fixedly arranged on the mounting base 3, a plurality of tapered cylinders 26 are arranged on the fixing frame 25, the tapered cylinders 26 are arranged in the horizontal direction and are fixedly arranged on the fixing frame 25, and the tapered cylinders 26 have pointed ends facing the heat dissipation fan 6.

[0042] With reference to the foregoing, when the heat dissipation fan 6 works, external air passes through the air inlet 5 and the plurality of tapered cylinders 26 in sequence. When the external air passes through the tapered cylinders 26, the temperature of the external air decreases due to the gradually decreasing inner diameter of the tapered cylinders 26, thereby being more conducive to heat dissipation.

[0043] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DC power supply device, comprising a housing (1) and a front end plate (2), wherein a mounting base (3) is provided on the front end plate (2) located inside the housing (1), the front end plate (2) and the housing (1) are in contact and overlapped and fixed by bolts, and a plurality of heat dissipation holes (4) are constructed on opposite sides of the housing (1), and an air inlet (5) is constructed at the rear of the housing (1), characterized in that, A cooling fan (6) is provided on the mounting base (3). A filter screen (7) corresponding to the air inlet (5) is provided at the tail of the outer shell (1). A U-shaped fixed shell (8) is provided on both sides of the outer shell (1). A roller (9) is rotatably provided inside the fixed shell (8). A shielding cloth (10) is wrapped around the roller (9). Two sliders (11) are slidably provided on the fixed shell (8). A moving rod (12) is provided between the two sliders (11). The free end of the shielding cloth (10) is connected to the moving rod (12). A transmission component is provided on the fixed shell (8). When the roller (9) rotates, the two sliders (11) are driven to slide synchronously through the transmission component.

2. The DC power supply device according to claim 1, characterized in that, Two guide rollers (13) are rotatably mounted on the fixed shell (8), and the free end of the shielding cloth (10) passes between the two guide rollers (13).

3. The DC power supply device according to claim 1, characterized in that, The transmission component includes two lead screws (14) that are rotatably mounted on a fixed shell (8), and two sliders (11) that are threadedly engaged with the two lead screws (14) respectively. The lead screws (14) and the roller (9) are connected by a bevel gear pair (15).

4. The DC power supply device according to claim 1, characterized in that, The two rollers (9) are connected by a pulley assembly (16).

5. The DC power supply device according to claim 1, characterized in that, The outer shell (1) is provided with dustproof components that are the same number as the heat dissipation holes (4) and correspond one-to-one. The dustproof components include two fixing plates (17) that are both provided inside the outer shell (1). A channel is formed between the two fixing plates (17) that communicates with the heat dissipation holes (4). Multiple symmetrically staggered inclined plates (18) that are all facing the heat dissipation holes (4) are provided in the channel.

6. The DC power supply device according to claim 1, characterized in that, The filter screen (7) is provided with a locking block (19) and two positioning holes (20). The outer shell (1) is provided with two positioning posts (21) and a locking element. The two positioning posts (21) are respectively inserted into the two positioning holes (20) and the locking element locks or unlocks the locking block (19).

7. The DC power supply device according to claim 6, characterized in that, The locking component includes a locking rod (22) that is slidably disposed on the outer casing (1), a return spring (23) is provided between the locking rod (22) and the outer casing (1), and a wedge block (24) that abuts against the locking block (19) is provided at the free end of the locking rod (22).

8. The DC power supply device according to claim 1, characterized in that, The mounting base (3) is provided with a fixing frame (25), and the fixing frame (25) is provided with a plurality of conical cylinders (26), the tips of the conical cylinders (26) facing the cooling fan (6).

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