CN219226754U

CN219226754U - Vehicle-mounted charger

Info

Publication number: CN219226754U
Application number: CN202320048770.8U
Authority: CN
Inventors: 胡建龙
Original assignee: Dongguan Junxing Hardware Paper Co ltd
Current assignee: Dongguan Junxing Hardware Paper Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-06-20
Anticipated expiration: 2033-01-04

Abstract

The utility model discloses a vehicle-mounted charger, which comprises a shell, wherein two symmetrical circuit boards are arranged in the shell, and a negative electrode component and a positive electrode component are connected between the two circuit boards; the negative electrode assembly comprises a negative electrode elastic sheet and a negative electrode terminal, wherein the negative electrode elastic sheet is connected to the two circuit boards, and the negative electrode terminal is attached to the negative electrode elastic sheet and can slide; the negative terminal comprises a negative contact block with a bulge type bulge, a cavity is formed in the negative contact block, the top and the side face of the negative contact block are arc-shaped, the lower end of the negative contact block is also connected with a clamping piece, and the negative contact block and the clamping piece are integrally formed; the clamping piece extends outwards around the lower end of the negative electrode contact block, and one end of the clamping piece extends outwards and is bent downwards and then loops to the other end of the clamping piece; the clamping piece is used for coating the lower end of the negative electrode contact block, and the negative electrode terminal can slide on the negative electrode elastic sheet through the clamping piece. The negative terminal is flexible in cooperation with the negative spring piece after being pressed, and can be conveniently plugged into and pulled out of the vehicle-mounted charger.

Description

Vehicle-mounted charger

Technical Field

The utility model relates to the technical field of chargers, in particular to a vehicle-mounted charger.

Background

The vehicle-mounted charger is a fitting for conveniently charging the vehicle-mounted vehicle charging source for the digital product at any time and any place, wherein the vehicle-mounted charger has various structures, and the structures of the vehicle-mounted chargers all adopt the mode of the elastic sheet to achieve convenient plugging of the negative electrode elastic sheet. The authorization publication number CN106786911A discloses a vehicle-mounted charger, and particularly discloses a vehicle-mounted charger, which comprises a shell, wherein a circuit main board is arranged in the shell, reserved holes are formed in the two sides and the bottom of the shell, a negative pole shrapnel is arranged in the shell, the negative pole shrapnel comprises a base, spring arms are arranged on the two sides of the base and positioned on the two sides of the main board, bulge type bulges are arranged on the outer sides of the spring arms and extend out of the reserved holes on the two sides of the shell and are connected with the negative pole of a power circuit in a vehicle; the base, the spring arm and the bulge are integrally formed by stamping.

Although the above-mentioned vehicle-mounted charger has some advantages, there is still some room for improvement, for example, the protruding setting on the negative pole shell fragment is on the negative pole shell fragment, and wherein negative pole shell fragment and protruding integrated into one piece, when inserting and separating, when protruding atress back drive spring arm stretches out and draws back, the atress concentrates in protruding and spring arm's junction, can lead to vehicle-mounted charger not smooth and easy enough when inserting or separating, consequently inconvenient vehicle-mounted charger's plug.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a vehicle-mounted charger, wherein a negative terminal and a negative spring plate are separated, and when the vehicle-mounted charger is plugged in or separated, the negative terminal and the negative spring plate can be mutually matched in a sliding way after being pressed, so that the vehicle-mounted charger can be plugged in or pulled out conveniently.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the vehicle-mounted charger comprises a shell, wherein two symmetrical circuit boards are arranged in the shell, a negative electrode component and a positive electrode component are connected between the two circuit boards, and a USB interface for charging is further arranged at the top of the shell; the negative electrode assembly comprises a negative electrode elastic sheet and a negative electrode terminal, the negative electrode elastic sheet is connected to the two circuit boards, the negative electrode terminal is attached to the negative electrode elastic sheet and can slide, and the negative electrode elastic sheet can realize shrinkage action and drive the negative electrode elastic sheet to stretch after being stressed and deformed; the negative terminal comprises a negative contact block with a bulge type bulge, a cavity is formed in the negative contact block, the top and the side face of the negative contact block are arc-shaped, the lower end of the negative contact block is also connected with a clamping piece, and the negative contact block and the clamping piece are integrally formed; the clamping piece extends outwards around the lower end of the negative electrode contact block, and one end of the clamping piece extends outwards and is bent downwards to return to the other end of the clamping piece; the clamping piece is used for coating the lower end of the negative electrode contact block, and the negative electrode terminal can slide on the negative electrode elastic sheet through the clamping piece.

The method also comprises the following technical scheme:

further, the negative pole shell fragment includes the fixed plate and sets up a pair of bullet arm in the left and right sides of this fixed plate symmetry each other, the left and right sides of fixed plate is connected respectively on two on the circuit board, two the free end of bullet arm extends outwards obliquely respectively, and two the end after the bullet arm extends inwards bends respectively and forms the bending portion.

Further, the surface of the negative electrode contact block is provided with a first stress area and a second stress area which are oppositely arranged; when the first stress area is pressed, the clamping piece is attached to the bending part, and when the second stress area is pressed, the clamping piece is attached to the spring arm.

Further, the clamping piece comprises an upper piece connected with the negative electrode contact block and a lower piece used for being attached to the negative electrode elastic piece, two sides of the lower piece parallel to the elastic arm are respectively provided with downward bending edges matched with the elastic arm, and the distance between the two bending edges is larger than the width distance of the elastic arm, so that the clamping piece is attached to the elastic arm and is not easy to shift when sliding on the elastic arm.

Further, the end face of the bending portion has an inclination angle, so that the negative electrode contact block is attached to the end face of the bending portion after being pressed.

Further, the fixing plate and the spring arm are integrally formed, first protruding blocks are respectively arranged on two sides of the fixing plate, first mounting holes which are correspondingly matched are formed in the circuit board, and the first protruding blocks are inserted into the first mounting holes and used for fixing the negative pole spring plates.

Further, the positive electrode assembly includes a positive electrode terminal and a fixing plate, and the positive electrode terminal is connected to the circuit board through the fixing plate.

Further, through holes are respectively formed in two sides of the shell, and the negative electrode contact block can extend out of the through holes.

Further, the size of the clamping piece is larger than that of the through hole, so that the clamping piece can be clamped on the inner wall of the shell.

Further, the size of the negative electrode contact block is smaller than that of the through hole, and the negative electrode contact block is matched with the through hole, so that the negative electrode contact block can stretch and retract in the through hole.

The beneficial effects of the utility model are as follows:

according to the utility model, through the split design of the negative electrode terminal and the negative electrode elastic sheet, the negative electrode terminal is attached to the negative electrode elastic sheet, and after the negative electrode terminal is pressed, the negative electrode terminal can slide on the negative electrode elastic sheet in a matched manner, so that the vehicle-mounted charger can be more smoothly inserted or separated, and the vehicle-mounted charger can be conveniently inserted or extracted.

And secondly, the clamping piece with a double-layer structure is designed on the negative electrode terminal, so that the conductive area of the negative electrode terminal is increased, and larger current is loaded.

And thirdly, the utility model has the advantages of simple structure, lower cost and the like by integrally forming the negative electrode contact block and the clamping piece and arranging the cavity inside the negative electrode contact block.

Drawings

FIG. 1 is a schematic view of a partial structure of the present utility model;

FIG. 2 is an overall exploded view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is a schematic cross-sectional view of a negative terminal of the present utility model;

FIG. 5 is a schematic diagram showing the combination of the negative terminal and the negative spring plate according to the present utility model;

FIG. 6 is a second schematic diagram of the combination of the negative terminal and the negative spring plate according to the present utility model;

fig. 7 is an exploded view of a partial structure of the present utility model.

Reference numerals:

1. a negative electrode assembly; 11. a negative pole shrapnel; 111. a spring arm; 112. a bending part; 113. a fixing plate; 114. a first bump; 12. a negative electrode terminal; 121. a negative electrode contact block; 122. a first force-bearing zone; 123. a second force-bearing zone; 124. a clamping piece; 125. bending edges; 126. loading a piece; 127. blanking; 2. a circuit board; 21. a first mounting hole; 22. a second mounting hole; 3. a positive electrode assembly; 31. a positive electrode terminal; 32. a connecting plate; 321. a second bump; 4. a through hole; 5. a housing; 6. a USB interface.

Detailed Description

Specific embodiments in accordance with the present disclosure are described in detail below with reference to the various drawings.

As shown in fig. 1-7, a vehicle-mounted charger comprises a housing 5, two symmetrical circuit boards 2 are arranged in the housing 5, a negative electrode component 1 and a positive electrode component 3 are connected between the two circuit boards 2, and a USB interface 6 for charging is further arranged on the top of the housing 3.

As shown in fig. 1-7, the negative electrode assembly 1 includes a negative electrode elastic sheet 11 and a negative electrode terminal 12, the negative electrode elastic sheet 11 is connected to the two circuit boards 2, the negative electrode terminal 12 is attached to the negative electrode elastic sheet 11 and can slide, and the negative electrode elastic sheet 11 can realize shrinkage action and drive the negative electrode terminal 12 to stretch after being stressed and deformed. The negative electrode spring plate 11 and the negative electrode terminal 12 are of a split structure, so that the negative electrode terminal 12 can slide on the negative electrode spring plate 11 according to the change of a stress point after the negative electrode terminal 12 is pressed; meanwhile, when the negative electrode terminal 12 transmits pressure to the negative electrode elastic piece 11, the negative electrode elastic piece 11 correspondingly cooperates with the negative electrode terminal 12 to stretch and retract after being pressed, so that mutual cooperation between the negative electrode terminal and the negative electrode terminal is realized, and the vehicle-mounted charger can be more smoothly inserted or separated.

As shown in fig. 1 to 7, the negative terminal 12 includes a negative contact block 121 having a bulge-like protrusion, the inside of the negative contact block 121 is a cavity, and the top and the side surfaces of the negative contact block 121 are arc-shaped, so that the insertion and the extraction are smoother; the lower end of the negative electrode contact block 121 is also connected with a clamping piece 124, and the negative electrode contact block 121 and the clamping piece 124 are integrally formed; the clamping piece 124 extends outwards around the lower end of the negative electrode contact block 121, and one end of the clamping piece 124 extends outwards and is bent downwards to return to the other end of the clamping piece; so that the clamping piece 124 can cover the lower end of the negative electrode contact block 121, and the negative electrode terminal 12 can slide on the negative electrode shrapnel 11 through the clamping piece 124. The clamping piece 124 has a double-layer structure, so that the conductive area of the negative terminal is increased, and larger current is loaded.

As shown in fig. 1, the negative electrode spring 11 includes a fixing plate 113 and a pair of spring arms 11 symmetrically disposed on the left and right sides of the fixing plate 113, the left and right sides of the fixing plate 13 are respectively connected to the two circuit boards 3, the free ends of the two spring arms 11 respectively extend and spread outwards, the extended ends of the two spring arms 11 respectively bend inwards to form a bending portion 12, the negative electrode terminal 2 is attached to the outer end surface of the spring arm 11 and can slide on the spring arm 11, so that the negative electrode terminal 2 can apply pressure to the bending portion 12 of the negative electrode spring 1 after being pressed. The design of the spring arm 11 with the outward expansion ensures that when the negative terminal 2 slides to the tail end of the spring arm 11 after being stressed, the pressure born by the negative spring plate 1 is concentrated at the tail end of the spring arm 11, namely, when the negative terminal 2 receives smaller pressure, the spring arm 11 can be driven to be compressed; and still have the portion of bending 12 at the end of spring arm 11, wherein negative pole terminal slides the portion department of bending in the slip in-process, can step down, and negative pole terminal and negative pole shell fragment of being convenient for can cooperate each other to make the on-vehicle charger of cooperation slip more smooth and easy when inserting and closing or separating.

As shown in fig. 5 and 6, the surface of the negative electrode contact block 21 is provided with a first stress area 211 and a second stress area 212 which are oppositely arranged, when the first stress area 211 is pressed, one end of the negative electrode contact block is pressed down, the clamping piece 22 is attached to the bending part 12, and the other symmetrical end of the negative electrode contact block rises, so that the pressure born by the negative electrode contact block 21 is transmitted to the bending part 12, and the stress is concentrated on the bending part 12; when the vehicle-mounted charger continues to be inserted, after the second stress area 212 is pressed, the clamping piece 22 is attached to the spring arm 11, so that the pressure applied by the negative electrode contact block 21 is transmitted to the spring arm 11, and the vehicle-mounted charger is smoother when continuing to be inserted.

As shown in fig. 1-7, the clamping piece 124 comprises an upper piece 126 connected with the negative electrode contact block 121 and a lower piece 127 used for being attached to the spring arm 111, wherein both sides of the lower piece 127 parallel to the spring arm 111 are respectively provided with a downward bending edge 125 matched with the spring arm 111, and the lower piece 127 is attached to the spring arm 111 to slide; the distance between the two bending edges 125 is greater than the width of the spring arm 111, and the two bending edges 125 are used for limiting the spring arm 111, so that the clamping piece 124 can be prevented from being displaced when being attached to the spring arm 111 and sliding in the limiting process of the spring arm 111.

As shown in fig. 5, the end surface of the bending portion 112 has an inclination angle, the negative electrode contact block 121 can be attached to the end surface of the bending portion 112 after being pressed, and when the negative electrode contact block 121 is attached to the bending portion 112 and continues to compress, the bending portion 112 receives the pressure of the negative electrode contact block 121, so that the negative electrode elastic sheet 11 can be deformed obliquely inwards.

As shown in fig. 2, the fixing plate 113 and the spring arm 111 are integrally formed, the two sides of the fixing plate 113 are respectively provided with a first bump 114, and the circuit board 2 is provided with a first mounting hole 21 correspondingly matched, and the first bump 114 is inserted into the first mounting hole 21 for fixing the negative pole spring 11; the fixing of the negative pole shrapnel 11 is firmer by fixing the two sides of the fixing plate 113 at the two ends of the circuit board 2, so that the negative pole shrapnel 11 is more stable when deformed.

As shown in fig. 2, the circuit board 2 is further connected with a positive electrode assembly 3, and a second mounting hole 22 is provided on the circuit board 2, and the second mounting hole 22 is used for mounting the positive electrode assembly 3. Wherein the positive electrode assembly 3 includes a positive electrode terminal 31 and a connection plate 32 for connecting the positive electrode terminal 31, and the connection plate 42 has second protrusions 321 at both sides thereof, the second protrusions 321 being inserted into the second mounting holes 22 for fixing the positive electrode assembly 3.

As shown in fig. 3, through holes 4 are provided at both sides of the case 5, and the negative electrode contact 121 may protrude from the through holes 4.

As shown in fig. 3, the size of the clamping piece 124 is larger than the size of the through hole 4, and the clamping piece 124 can be clamped on the inner wall of the housing 5, so that when the negative electrode spring 11 drives the negative electrode terminal 12 to stretch, the clamping piece 124 can limit the negative electrode terminal 12, so as to prevent the negative electrode contact block 121 from completely extending out of the through hole 4. Of course, the size of the negative electrode contact block 121 is also smaller than the size of the through hole 4, and the negative electrode contact block 121 is matched with the through hole 4, so that the negative electrode contact block 121 can be telescopic in the through hole.

The following describes the specific principles of use of the present utility model to facilitate an understanding of the present utility model:

as shown in fig. 1 to 7, when the vehicle charger is inserted, first, the first stress area 122 on the negative contact block 121 is pressed first, and the negative terminal 12 and the negative spring 11 slide in cooperation with each other, the negative terminal 12 slides to the bent portion 112 on the negative spring 11, the negative terminal 12 is attached to the bent portion 112, and the pressure applied to the negative contact block 121 is transmitted to the bent portion 112, so that the pressure is also inclined towards the direction of the bent portion 112, and the negative spring 11 is also deformed and contracted by the pressure. When the vehicle-mounted charger continues to be inserted, after the negative electrode contact block 121 continues to be pressed, the negative electrode terminal 12 also slides to the spring arm 111 at the same time, so that the pressure born by the negative electrode contact block 121 moves to the second stress area 123, at this time, the negative electrode terminal 12 is also matched and attached to the spring arm 111, when the pressure born by the negative electrode contact block 121 is transmitted to the spring arm 11, the spring arm 111 is subjected to pressure deformation, and the negative electrode terminal 12 attached to the spring arm 111 also correspondingly contracts, so that the vehicle-mounted charger can be conveniently inserted.

Other corresponding technical features for assisting the implementation of the technical scheme implemented by the utility model can be implemented correspondingly or modified on the basis of the conventional technical means by the skilled person, and the technical means in other related aspects are not repeated here.

Claims

1. The utility model provides an on-vehicle charger, includes the shell, be provided with two symmetrical circuit boards in the shell, two connect negative pole subassembly and anodal subassembly between the circuit board the top of shell still is provided with the USB interface that is used for charging, its characterized in that:

the negative electrode assembly comprises a negative electrode elastic sheet and a negative electrode terminal, the negative electrode elastic sheet is connected to the two circuit boards, the negative electrode terminal is attached to the negative electrode elastic sheet and can slide, and the negative electrode elastic sheet can realize shrinkage action and drive the negative electrode elastic sheet to stretch after being stressed and deformed;

the negative terminal comprises a negative contact block with a bulge type bulge, a cavity is formed in the negative contact block, the top and the side face of the negative contact block are arc-shaped, the lower end of the negative contact block is also connected with a clamping piece, and the negative contact block and the clamping piece are integrally formed; the clamping piece extends outwards around the lower end of the negative electrode contact block, and one end of the clamping piece extends outwards and is bent downwards to return to the other end of the clamping piece; the clamping piece is used for coating the lower end of the negative electrode contact block, and the negative electrode terminal can slide on the negative electrode elastic sheet through the clamping piece.

2. The vehicle-mounted charger according to claim 1, wherein:

the negative pole shell fragment includes the fixed plate and sets up a pair of bullet arm in the left and right sides of this fixed plate symmetry each other, the left and right sides of fixed plate is connected respectively two on the circuit board, two the free end of bullet arm extends outwards obliquely respectively, and two the terminal after the bullet arm extends is inwards bent respectively and is formed the portion of bending.

3. The vehicle-mounted charger according to claim 2, wherein:

the surface of the negative electrode contact block is provided with a first stress area and a second stress area which are oppositely arranged; when the first stress area is pressed, the clamping piece is attached to the bending part, and when the second stress area is pressed, the clamping piece is attached to the spring arm.

4. The vehicle-mounted charger according to claim 1, wherein:

the clamping piece comprises an upper piece connected with the negative electrode contact block and a lower piece used for being attached to the negative electrode elastic piece, wherein two sides of the lower piece parallel to the elastic arm are respectively provided with downward bending edges matched with the elastic arm, and the distance between the two bending edges is larger than the width distance of the elastic arm, so that the clamping piece is attached to the elastic arm and is not easy to shift when sliding on the elastic arm.

5. The vehicle-mounted charger according to claim 2, wherein:

the end face of the bending part is provided with an inclination angle, so that the negative electrode contact block is attached to the end face of the bending part after being pressed.

6. The vehicle-mounted charger according to claim 2, wherein:

the fixing plate and the spring arm are integrally formed, first protruding blocks are respectively arranged on two sides of the fixing plate, first mounting holes which are correspondingly matched are formed in the circuit board, and the first protruding blocks are inserted into the first mounting holes and used for fixing the negative pole spring plates.

7. The vehicle-mounted charger according to claim 1, wherein:

the positive electrode assembly comprises a positive electrode terminal and a fixing plate, and the positive electrode terminal is connected to the circuit board through the fixing plate.

8. The vehicle-mounted charger according to claim 1, wherein:

through holes are respectively formed in two sides of the shell, and the negative electrode contact block can extend out of the through holes.

9. The vehicle-mounted charger according to claim 8, wherein:

the size of the clamping piece is larger than that of the through hole, so that the clamping piece can be clamped on the inner wall of the shell.

10. The vehicle-mounted charger according to claim 8, wherein:

the size of the negative electrode contact block is smaller than that of the through hole, and the negative electrode contact block is matched with the through hole, so that the negative electrode contact block can stretch and retract in the through hole.