CN211830549U

CN211830549U - DC converter

Info

Publication number: CN211830549U
Application number: CN202020272703.0U
Authority: CN
Inventors: 华浩驰
Original assignee: Ningbo Xintai Electric Co ltd
Current assignee: Ningbo Xintai Electric Co ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-10-30
Anticipated expiration: 2030-03-07

Abstract

The utility model relates to a DC converter relates to vehicle accessories's technical field, it includes the casing, install the circuit board in the casing inner chamber, the wire of being connected with the circuit board, a mounting hole for set up the running through casing on the casing, a mounting that demountable installation just is used for fixed wire with the mounting hole adaptation on the casing, a mounting includes fixed block and installation piece, a one side an organic whole that is used for installation piece and fixed block to contradict is provided with a plurality of butt pieces, a direction that is used for the butt piece to stretch out to the fixed block, a butt interface that supplies the butt piece to insert the butt is offered on the fixed block. The utility model discloses have and operate more convenient effect when the installation wire.

Description

DC converter

Technical Field

The utility model belongs to the technical field of vehicle accessory's technique and specifically relates to a DC converter is related to.

Background

The DC converter is a voltage converter which can effectively output fixed voltage after converting input voltage, is widely used in the use process of electrical appliances, and particularly plays an important role in the charging process of the existing electric vehicle.

Referring to fig. 1, a schematic structural diagram of a DC converter is shown, including a hollow housing 1 ' made of a plastic material, a circuit board is installed in an inner cavity of the housing 1 ', the circuit board is connected to a lead 2 ', a through hole 3 ' is formed in the housing, and after the lead 2 ' is connected to the circuit board, the lead 2 ' is passed through the through hole 3 ' to pass the lead 2 ' out of the inner cavity of the housing 1 ' and be connected to an external component or a power supply.

The above prior art solutions have the following drawbacks: when actual installation, generally on the earlier wire welded circuit board, after the wire is connected with the circuit board, operating personnel need wear out the wire of a root in the perforation on the casing with the hand needs, troublesome poeration, and the space is narrow and small after having installed the circuit board in the inner chamber of casing moreover, and operating personnel's hand is difficult for stretching into the operation in the inner chamber, further makes the troublesome poeration of wearing out the wire in the perforation, and work efficiency is low, improved space in addition.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a DC converter has the effect of operating more conveniently when the installation wire.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a DC converter, includes the casing, installs circuit board in the casing inner chamber, the wire of being connected with the circuit board, set up the installing port that runs through the casing on the casing, demountable installation has the mounting that just is used for fixed wire with the installing port adaptation on the casing, the mounting includes fixed block and installation piece, the installation piece is provided with a plurality of butt pieces with one side an organic whole that the fixed block is contradicted, the butt piece stretches out to the direction of fixed block, set up the butt interface that supplies the butt piece to insert the butt on the fixed block.

Through adopting above-mentioned technical scheme, the fixed block is mutually supported with the installation piece, when actual installation, install the fixed block on the installing port earlier, will connect the wire on the circuit board and pass the interface that supports on the fixed block, install the installation piece to the installing port at last, and make the butt piece compress tightly the wire to the butt mouth in, thereby fix the wire, compare and offer the perforation in offering on the casing, will connect the wire on the circuit board again and pass the perforation, operate convenient and fast more, improve work efficiency when reducing the work degree of difficulty.

The present invention may be further configured in a preferred embodiment as: the installation piece is seted up with one side that the butt mouth lateral wall is contradicted and is supplied the wire to inlay the first arc wall of establishing the installation, set up the second arc wall that corresponds with first arc wall on the fixed block, the second arc wall supplies the wire to inlay to establish the installation and communicate each other with the butt mouth.

Through adopting above-mentioned technical scheme, first arc wall and second arc wall are mutually supported, support the wire tightly when supporting the interface when the piece, because the setting of first arc wall and second arc wall, the wire can be fixed and can not take place to rock in first arc wall and second arc wall, improve the stability of wire installation, in addition, after the wire is fixed in first arc wall and second arc wall, can not leave the gap between wire and conflict piece and the interface, external water, object such as impurity can not get into to the converter inside, thereby prevent that impurity such as external water and dust from causing the influence to the converter, improve the life of converter.

The present invention may be further configured in a preferred embodiment as: all set up the mounting groove that supplies casing slidable mounting on the fixed block and the adjacent lateral wall of butt mouth, all set up on the adjacent lateral wall of installation piece and butt piece and supply the casing to slide spacing groove of sliding.

By adopting the technical scheme, due to the arrangement of the mounting groove, when the fixed block is mounted on the shell, only the shell is required to be aligned to the mounting groove, and then the shell is slid into the mounting groove, so that the operation is convenient, and the mounting efficiency of the fixed block is improved; in a similar way, the arrangement of the sliding groove only needs to align the shell to the sliding groove on the installation block when the installation block is installed on the shell, and then the shell slides into the sliding groove, so that the installation block can be fixed on the shell, the installation efficiency of the installation block is improved, and the working efficiency is improved.

The present invention may be further configured in a preferred embodiment as: the shell is provided with a guide surface which guides the installation block and the fixed block to be inserted and installed and is communicated with the installation opening, and the guide surface is obliquely arranged along the insertion direction of the installation block to the direction close to the installation opening.

Through adopting above-mentioned technical scheme, the setting of guide face is fixing the fixed block on the casing with the installation piece, because the setting of guide face, can be more convenient go into the casing card to the mounting groove with the groove that slides in, convenient operation improves the efficiency of fixed block and installation piece installation.

The present invention may be further configured in a preferred embodiment as: a limiting block is integrally arranged on one side, close to the inner cavity, of the shell, and a limiting groove for the limiting block to insert into for limiting is formed in the circuit board.

Through adopting above-mentioned technical scheme, stopper and spacing groove are mutually supported, and when the circuit board was installed to the inner chamber of casing, because stopper and fibrous just limiting displacement for the circuit board can not take place to rock, improves the stability of circuit board installation.

The present invention may be further configured in a preferred embodiment as: and a bearing plate which is abutted against one side of the circuit board far away from the lead is arranged in the inner cavity of the shell.

Through adopting above-mentioned technical scheme, the setting of accepting the board, after the circuit board is installed to the inner chamber of casing in with accept the board and take place to contradict, support the circuit board in the inner chamber, prevent that the circuit board from taking place to rock in the casing inner chamber, improve the stability of circuit board installation.

The present invention may be further configured in a preferred embodiment as: and a plurality of limiting plates which are abutted and limited with the circuit board are arranged in the cavity of the shell.

Through adopting above-mentioned technical scheme, the setting of limiting plate, after the circuit board is installed to accepting on the board, the side of circuit board can take place to contradict with the limiting plate, after the circuit board contradicts with the limiting plate, the limiting plate is crowded tightly fixed with the circuit board, further prevents that the circuit board from taking place to rock in the casing inner chamber, further improves the stability of circuit board installation.

The present invention may be further configured in a preferred embodiment as: one side of the limiting plate, which is far away from the bearing plate, is provided with an inclined plane for guiding the circuit board to be installed, and the inclined plane is gradually inclined towards the direction close to the circuit board along the insertion direction of the circuit board into the inner cavity.

Through adopting above-mentioned technical scheme, the setting on inclined plane, when the circuit board was installed to the casing inner chamber along the limiting plate in, because the setting on inclined plane for the circuit board can be more convenient insert more smoothly to the inner chamber in, can be more convenient with the circuit board installation accept the board on, further improve the efficiency of circuit board installation, thereby further improve work efficiency.

The present invention may be further configured in a preferred embodiment as: still be provided with the pressing part that is used for compressing tightly circuit board and installs the components and parts on the circuit board, the pressing part includes conflict piece and elasticity compact heap, the conflict piece sets up perpendicularly on the circuit board and stretches out to the direction of keeping away from in the circuit board, conflict takes place with the casing in conflict piece one side, conflict takes place with the one side that the circuit board was kept away from to elasticity compact heap one end and conflict piece, conflict takes place with the casing in the elasticity compact heap other end.

Through adopting above-mentioned technical scheme, conflict piece and elasticity compact heap mutually support, after the circuit board is installed to the inner chamber, lie in the conflict piece butt on the circuit board on the casing, one side that the circuit board was kept away from to the rethread elasticity compact heap will conflict the piece compresses tightly on the casing to make the conflict piece fix and be difficult for droing at the casing, thereby make the circuit board install difficult droing in the inner chamber, improve the stability of flat circuit board installation.

The present invention may be further configured in a preferred embodiment as: one side an organic whole that elasticity compact heap and conflict piece are contradicted is provided with the joint piece, set up the joint groove that supplies the joint piece joint that slides on the conflict piece.

Through adopting above-mentioned technical scheme, the joint piece is mutually supported with the joint groove, when needs install the elasticity compact heap on the touch piece, only need keep away from the one end and the casing butt of joint piece with the elasticity compact heap, with the joint piece joint to the joint groove on the elasticity compact heap, because the limiting displacement in joint groove makes the more stable difficult rocking of elasticity compact heap installation, improve the more stable of elasticity compact heap installation.

To sum up, the utility model discloses a following at least one useful technological effect:

1. due to the arrangement of the mounting block, the fixing block and the abutting block, the efficiency of wire mounting is improved, and therefore the working efficiency is improved;

2. the first arc-shaped groove and the second arc-shaped groove are matched with each other, so that the stability of the lead in mounting on the shell is improved;

3. the mounting groove is mutually supported with the groove that slides for it is more convenient that installation piece and fixed block are installed to the casing, improves the efficiency that fixed block and installation piece were installed to the casing.

Drawings

Fig. 1 is a schematic diagram of a DC converter in the prior art.

Fig. 2 is a schematic structural diagram of the casing, the lead and the fixing member of the DC converter according to the present invention.

Fig. 3 is an exploded view of the anchor and wire.

Figure 4 is an exploded view of the fastener.

Fig. 5 is a schematic structural diagram of the housing and the circuit board mounted in the inner cavity of the housing.

Fig. 6 is a schematic view of the pressing device.

Fig. 7 is a schematic diagram of a limiting structure of the shell and the circuit board installed in the inner cavity of the shell.

Fig. 8 is an enlarged schematic view of the a-portion stopper and the stopper groove in fig. 7.

Fig. 9 is an enlarged schematic view of the B-portion stopper plate and the receiving plate in fig. 7.

Fig. 10 is a cross-sectional view of the C-portion circuit board of fig. 7 and an enlarged schematic view of the stopper plate and the receiving plate.

In the figure, 1, a housing; 2. an inner cavity; 3. a circuit board; 4. a wire; 5. an installation port; 6. a fixing member; 7. a fixed block; 8. mounting blocks; 9. a butting block; 10. abutting the interface; 11. a first arc-shaped slot; 12. a second arc-shaped slot; 13. mounting grooves; 14. a sliding groove; 15. a guide surface; 16. a limiting block; 17. a limiting groove; 18. a bearing plate; 19. a limiting plate; 20. an inclined surface; 21. a compression member; 22. a contact block; 23. an elastic pressing block; 24. a clamping block; 25. a clamping groove; 26. a connecting strip; 27. a lengthening block; 1', a shell; 2', conducting wires; 3', and perforating.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, for the utility model discloses a DC converter, including casing 1, casing 1 is the hollow structure that the rectangle set up, is provided with the inner chamber in casing 1, is provided with wire 4 in casing 1 inner chamber 2, and wire 4 extends outside casing 1 from inner chamber 2.

In order to facilitate the installation of the lead 4 on the housing 1, the housing 1 is provided with an installation opening 5 penetrating through the housing 1, and the installation opening 5 is a rectangular opening in the embodiment; the casing 1 is detachably provided with a fixing piece 6 which is matched with the mounting port 5 and used for fixing the lead 4, the fixing piece 6 is arranged in a rectangular plate-shaped structure, and the fixing piece 6 is arranged at the mounting port 5 on the casing 1.

Referring to fig. 3 and 4, the fixing member 6 includes a fixing block 7 and an installation block 8, the fixing block 7 and the installation block 8 are both rectangular blocks made of plastic, and one side of the fixing block 7 is abutted against one side of the installation block 8.

In order to facilitate the installation of the lead 4 on the fixing piece 6, a fixing device for fixing the lead 4 is arranged on one side of the fixing block 7, which is abutted against the installation block 8, and the structure is as follows;

one side of the mounting block 8, which is abutted against the fixed block 7, is integrally provided with three abutting blocks 9, and the three abutting blocks 9 are arranged in the embodiment and can be arranged according to the number of the wires 4 in practical situations; the abutting block 9 is in an isosceles trapezoid shape, and a bottom edge with a larger length is integrally positioned on the mounting block 8; set up on fixed block 7 and supply butt piece 9 to insert the butt mouth 10 of butt, butt mouth 10 is the isosceles trapezoid's shape setting with butt piece 9 adaptation.

One side that the installation piece 8 was kept away from to butt joint piece 9 is seted up and is supplied wire 4 to inlay the first arc wall 11 of establishing the installation, sets up the second arc wall 12 that corresponds with first arc wall 11 on the fixed block 7, and second arc wall 12 supplies wire 4 to inlay to establish the installation and communicate each other with butt mouth 10, and after butt joint piece 9 inserted on butt mouth 10, first arc wall 11 and second arc wall 12 mutually supported and form the perforation that a circular shape supplies wire 4 to wear to establish the installation.

During actual installation, install wire 4 to the second arc wall 12 on the fixed block 7 earlier, insert the butt joint piece 9 on the installation piece 8 to the butt joint mouth 10 on the fixed block 7 again to make wire 4 protrusion establish to first arc wall 11 in the part of second arc wall 12 inlays, thereby make wire 4 fix on the perforation of first arc wall 11 and second arc wall 12 formation can.

In order to install the fixed block 7 and the installation block 8 at the installation opening 5 on the shell 1, installation grooves 13 are respectively formed in two side walls of the fixed block 7, which are adjacent to the butt joint opening 10, and the width of each installation groove 13 is larger than that of the shell 1 at the installation opening 5; during actual installation, align the casing 1 of installing mouthful 5 department with mounting groove 13 on fixed block 7 to make casing 1 slide in mounting groove 13, until fixed block 7 slides in to installing mouthful 5 mouthful bottom department, and will butt mouthful 10 towards the opposite direction that fixed block 7 inserted to installing mouthful 5. Similarly, all set up on the both sides wall that installation piece 8 and butt piece 9 are adjacent and supply casing 1 to slide spacing groove 14 that slides, after fixed block 7 passes through mounting groove 13 slidable mounting to installing port 5 department, install wire 4 to second arc wall 12 on, aim at butt piece 9 butt interface 10 again to make installation piece 8 install to installing port 5 department through groove 14 that slides, it can to fix wire 4 between first arc wall 11 and second arc wall 12 at last.

For fixing the fixing block 7 and the mounting block 8 on the housing 1 more conveniently, a guide surface 15 for guiding the mounting block 8 and the fixing block 7 to be inserted and mounted and communicated with the mounting opening 5 is arranged on the housing 1, the guide surface 15 is positioned at the folding angle of the opening of the mounting opening 5, and the inclined direction of the guide surface 15 is gradually inclined towards the direction close to the mounting opening 5 along the inserting direction of the fixing block 7 inserted into the mounting opening 5. The guide effect of guide surface 15 for mounting groove 13 on fixed block 7 can be more convenient aim at casing 1, thereby more convenient with fixed block 7 slide-in installation to casing 1 on, improve work efficiency.

Referring to fig. 5 and 6, in order to fix the circuit board 3 and the components on the circuit board 3 in the inner cavity 2 more stably, a pressing device is arranged between the circuit board 3 and the housing 1, and the structure of the pressing device is as follows:

the circuit board 3 is also provided with a pressing piece 21 for pressing the circuit board 3 and components mounted on the circuit board 3, and the pressing piece 21 comprises a contact block 22 and an elastic pressing block 23; in the embodiment, the contact block 22 is a rectangular block structure made of plastic material, the contact block 22 is vertically disposed on the circuit board 3 and extends in a direction away from the circuit board 3, and one side of the contact block 22 contacts with the housing 1; the contact block 22 is integrally provided with two extension blocks 27, one side of each extension block 27 close to the circuit board 3 is integrally provided with a plurality of connecting strips 26, the connecting strips 26 are fixedly connected onto the circuit board 3 in an inserting mode, and the contact block 22 can be fixed onto the circuit board 3 through the arrangement of the connecting strips 26.

The elastic pressing block 23 is a plate-shaped structure made of plastic materials with certain arc shape, and the elastic pressing block and the circuit board 3 are relatively horizontally arranged; one end of the elastic pressing block 23 is abutted against one side of the abutting block 22 far away from the circuit board 3, and the other end of the elastic pressing block 23 is abutted against the shell 1. In the time of actual operation, press elastic pressing block 23 earlier and order about elasticity and compress tightly soon and take place deformation, compress tightly elasticity again and contradict soon between casing 1 and conflict piece 22, compress tightly soon conflict when elasticity after on casing 1 and conflict piece 22, the deformation power of elastic pressing block 23 deformation compresses tightly elasticity soon to be fixed between casing 1 and conflict piece 22 to make circuit board 3 and the components and parts on the circuit board 3 be difficult for droing.

Elastic compression block 23 is provided with joint piece 24 with one side an organic whole that conflict of conflict piece 22, and joint piece 24 is the rectangle structure to keeping away from to stretch out with elastic compression block 23's direction, offers the joint groove 25 that supplies joint piece 24 to slide the joint on the conflict piece 22, through the limiting displacement of joint piece 24 with joint groove 25 for elastic compression block 23 is installed and is difficult for rocking in inner chamber 2, improves the stability of elastic compression block 23 installation.

Referring to fig. 7 and 8, still be provided with circuit board 3 in 1 inner chamber 2 of casing, circuit board 3 is made by the PCB board of rectangle, in order to prevent that circuit board 3 from installing to taking place to rock in inner chamber 2, casing 1 is close to integrative being provided with stopper 16 that stretches out to circuit board 3 direction on one side of circuit board 3, has seted up on the circuit board 3 and has supplied stopper 16 to insert spacing groove 17, and the width of spacing groove 17 is greater than the width of stopper 16, and stopper 16 can be worn out from spacing groove 17. When the circuit board 3 is installed in the inner cavity 2 of the shell 1, the limiting groove 17 on the circuit board 3 is aligned to the limiting block 16, and the limiting block 16 penetrates out of the limiting groove 17 on the circuit board 3.

Referring to fig. 9 and 10, in order to further improve the stability of the circuit board 3 installed in the inner cavity 2, a receiving plate 18 for receiving the circuit board 3 is integrally provided on a side of the housing 1 close to the inner cavity 2, and after the circuit board 3 is installed in the inner cavity 2 of the housing 1, the circuit board 3 contacts with the receiving plate 18, and the number of the receiving plates 18 is preferably four in this embodiment. Still integrative being provided with on casing 1 and accepting board 18 and being connected and the limiting plate 19 of contradicting with circuit board 3 lateral wall, limiting plate 19 and accepting board 18 mutually support and form an "L" shape structure, after circuit board 3 installed to accepting board 18, limiting plate 19 can take place to contradict with circuit board 3's lateral wall, prevents that circuit board 3 from taking place lateral shifting to reduce circuit board 3 and take place to rock, improve the stability of circuit board 3 installation.

In order to facilitate the circuit board 3 to be mounted on the receiving plate 18, an inclined surface 20 is provided at an end of the limiting plate 19 away from the receiving plate 18 for guiding the circuit board 3 to be mounted, and the inclined surface 20 is inclined gradually toward the receiving plate 18 in a direction in which the circuit board 3 is inserted into the cavity 2. When the circuit board 3 is mounted in the cavity 2, the circuit board 3 will contact the inclined surface 20 of the limiting plate 19, so as to guide the circuit board 3 to slide onto the receiving plate 18, thereby improving the convenience of mounting the circuit board 3.

The implementation principle of the embodiment is as follows: installing the circuit board 3 into the inner cavity 2 of the shell 1, installing the circuit board 3 on the bearing plate 18, and enabling the limiting block 16 to penetrate out of the limiting groove 17; then the fixed block 7 is installed in the installation opening 5, the lead 4 connected with the circuit board 3 penetrates out of the second arc-shaped groove 12, and finally the installation block 8 is installed in the installation opening 5, and the first arc-shaped groove 11 is enabled to press the lead 4 tightly.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a DC converter, includes casing (1), installs circuit board (3) in casing (1) inner chamber (2), wire (4) of being connected with circuit board (3), its characterized in that: offer installing port (5) that runs through casing (1) on casing (1), demountable installation has mounting (6) with installing port (5) adaptation and is used for fixed wire (4) on casing (1), mounting (6) are including fixed block (7) and installation piece (8), installation piece (8) are provided with a plurality of butt pieces (9) with one side an organic whole that fixed block (7) contradicted, butt piece (9) are stretched out to the direction of fixed block (7), set up on fixed block (7) and supply butt piece (9) to insert butt joint (10) of butt.

2. A DC converter according to claim 1, wherein: the installation piece (8) and the one side of supporting interface (10) lateral wall conflict are seted up and are supplied wire (4) to inlay first arc wall (11) of establishing the installation, set up second arc wall (12) that correspond with first arc wall (11) on fixed block (7), second arc wall (12) supply wire (4) to inlay establish the installation and communicate each other with supporting interface (10).

3. A DC converter according to claim 1, wherein: fixed block (7) all offer on the lateral wall adjacent with to interface (10) mounting groove (13) that supply casing (1) slidable mounting, all offer on the lateral wall adjacent with butt piece (9) mounting block (8) and supply casing (1) to slide spacing groove (14) that slides.

4. A DC converter according to claim 1, wherein: the shell (1) is provided with a guide surface (15) which guides the installation block (8) and the fixed block (7) to be inserted and installed and is communicated with the installation opening (5), and the guide surface (15) is obliquely arranged along the insertion direction of the installation block (8) to the direction close to the installation opening (5).

5. A DC converter according to claim 1, wherein: a limiting block (16) is integrally arranged on one side, close to the inner cavity (2), of the shell (1), and a limiting groove (17) for the limiting block (16) to insert into for limiting is formed in the circuit board (3).

6. A DC converter according to claim 1, wherein: and a bearing plate (18) which is abutted against one side of the circuit board (3) far away from the lead (4) is arranged in the inner cavity (2) of the shell (1).

7. A DC converter according to claim 1, wherein: a plurality of limiting plates (19) which are abutted and limited with the circuit board (3) are arranged in the cavity of the shell (1).

8. A DC converter according to claim 7, wherein: one side of the limiting plate (19) far away from the bearing plate (18) is provided with an inclined surface (20) for guiding the circuit board (3) to be installed, and the inclined surface (20) is gradually inclined towards the direction close to the circuit board (3) along the insertion direction of the circuit board (3) into the inner cavity (2).

9. A DC converter according to claim 1, wherein: still be provided with on circuit board (3) and be used for compressing tightly circuit board (3) and install compressing tightly piece (21) of the components and parts on circuit board (3), compressing tightly piece (21) are including conflict piece (22) and elasticity compact heap (23), conflict piece (22) set up perpendicularly on circuit board (3) and stretch out to the direction of keeping away from in circuit board (3), conflict piece (22) one side and casing (1) take place to contradict, conflict takes place in one side that circuit board (3) were kept away from with conflict piece (22) elasticity compact heap (23) one end, conflict takes place with casing (1) to elasticity compact heap (23) other end.

10. A DC converter according to claim 9, wherein: one side an organic whole that elasticity compact heap (23) contradicted with conflict piece (22) is provided with joint piece (24), offer joint groove (25) that supply joint piece (24) to slide the joint on the conflict piece (22).