Charging equipment with replaceable charging head
By designing replaceable male and female connectors in the charging equipment, the problem of the lack of universality of the charging equipment is solved, enabling it to adapt to the charging needs of different new energy vehicles on the same charging pile, thus improving the applicability and convenience of the charging equipment.
Patent Information
- Application Number
- CN202421901548.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Existing charging equipment lacks versatility, and users need to find matching charging piles according to the charging ports of different new energy vehicles, which makes use of them inconveniently.
Design a charging device with a replaceable charging head. By setting a male and a female connector on the charging gun, and using a locking block, gear box and motor to achieve detachable connection and fixation of the male and female connectors, users can replace the matching female connector on the same charging pile to adapt to the charging ports of different vehicle models.
It enables charging of different new energy vehicles on the same charging pile, improves the universality of charging equipment, avoids the loss of the female connector, and simplifies the charging process.
Smart Images
Figure CN223443336U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to new energy automobile charging equipment field especially, relates to a charging equipment of replaceable charging head. BACKGROUND
[0002] New energy automobile refers to the vehicle that uses the vehicle-mounted electric energy as power, uses the motor to drive the wheel to travel and meets the requirements of road traffic, safety regulations.
[0003] When the vehicle-mounted power supply of new energy automobile is exhausted, an external charging equipment is needed to charge the vehicle-mounted power supply, the existing charging equipment is mostly charging pile, the charging pile is electrically connected with the charging gun, the charging gun is inserted into the charging port of new energy automobile and is electrically connected with it, and the charging pile supplements the electric energy with new energy automobile through the charging gun.
[0004] Because the charging ports of new energy automobiles on the market are different, when the new energy automobile of the user needs to be charged, the charging pile matching the charging port of the user's own vehicle type is found, so that the charging pile lacks high universality. INVENTION CONTENTS
[0005] The utility model aims at providing a charging equipment of replaceable charging head, and the user can replace the matching charging head according to the charging port of own vehicle type.
[0006] The utility model discloses a charging equipment of replaceable charging head adopts the technical scheme that:
[0007] Including charging gun and charging pile, the charging gun is electrically connected with the charging pile, be equipped with the male head on the charging gun, two clamping blocks are slidably connected in the male head, be equipped with the first inclined block on the clamping block, be equipped with the first spring between two first inclined blocks, the first driving part is slidably connected in the male head, the first driving part is equipped with inclined slot, the inclined slot top touches the first inclined block, the clamping block passes out the male head outside, the male head is equipped with the through -hole, the through -hole is close to the first driving part, be equipped with a plurality of containing box on the charging pile, the containing box is equipped with containing groove, the female head is placed in the containing groove, the female head is equipped with the insertion slot, the inner wall of insertion slot is equipped with two clamping slots, the slot bottom of insertion slot penetrates the limiting hole, the through -hole and limiting hole are located on the same axis, be equipped with the gear box on the containing box, the first motor is connected on the gear box, the output shaft of first motor and gear box are connected, the gear box is slidably connected with the limiting shaft, the limiting shaft passes into containing groove and is slidably contacted with the limiting hole, the male head is slidably inserted into one of insertion slots, the clamping block is inserted into the adjacent clamping slot.
[0008] As a preferred scheme, the male head extends the foolproof convex, two clamping blocks are located on both sides of the foolproof convex, and the through -hole is located on the foolproof convex.
[0009] As a preferred scheme, the inner wall of the insertion slot is provided with an anti-fool groove, and the two clamping grooves are respectively located on the two sides of the inner wall of the anti-fool groove.
[0010] As a preferred scheme, the inner wall of the accommodation groove extends a first anti-fool surface, the outer side of the female head is provided with a second anti-fool surface, and the first anti-fool surface abuts against the second anti-fool surface.
[0011] As a preferred scheme, the inner wall of the limiting hole extends a limiting surface, the outer side of the limiting shaft is provided with a tangent surface, the tangent surface is in sliding contact with the limiting surface, a first rotating shaft is rotatably connected in the gear box, the output shaft of the first motor is fixedly connected with the first rotating shaft, a second inclined block extends from the first rotating shaft, a second rotating shaft is rotatably connected to the first rotating shaft, a third inclined block extends from the second rotating shaft, the limiting shaft is fixedly connected with the second rotating shaft, a second spring is sleeved on the outer side of the limiting shaft, and the two ends of the second spring abut against the second rotating shaft and the inner wall of the gear box respectively.
[0012] As a preferred scheme, the first rotating shaft is provided with a sliding groove, the second rotating shaft extends a sliding block, the sliding block is slidably connected in the sliding groove, the outer side of the second rotating shaft is provided with a tension spring, the two ends of the tension spring are fixedly connected with the first rotating shaft and the second rotating shaft respectively, a contact head extends from the limiting shaft, the tangent surface is located on the contact head, and an annular groove is formed in the limiting shaft and is close to the contact head.
[0013] As a preferred scheme, a slot is arranged on the accommodation box, a limiting assembly is arranged in the slot, the limiting assembly comprises a limiting block and a third spring, the limiting block is slidably connected in the slot, the limiting block penetrates out of the slot and is close to the edge of the accommodation groove, and the two ends of the third spring abut against the inner wall of the slot and the limiting block respectively.
[0014] As a preferred scheme, a limiting rod and a fourth spring are slidably connected in the gear box, the limiting rod penetrates into the slot, the two ends of the fourth spring abut against the limiting rod and the inner wall of the slot respectively, a fourth inclined block is arranged on the limiting rod, a second actuating member is slidably connected to the inner wall of the gear box, a gear is fixedly connected to the output shaft of the second motor, the gear is in engagement with the rack, a fifth inclined block is arranged on the second actuating member, and the fourth inclined block abuts against the fifth inclined block.
[0015] The charging equipment with a replaceable charging head has the following beneficial effects:
[0016] The plurality of female heads matched with different charging ports of new energy vehicles are respectively placed in the plurality of accommodation boxes, when a user needs to charge, the user selects the female head matched with the charging port of the new energy vehicle, and the male head of the charging gun is slid into the plug-in groove of the female head, the two clamping blocks are respectively clamped into the adjacent clamping grooves, the female head is fixed on the male head and is electrically connected with the male head, the user holds the charging gun and slides the female head into the charging port of the new energy vehicle to charge the new energy vehicle, so that the user can replace the female head on the charging gun with the female head matched with the charging port of the vehicle on the same charging pile, and the universality of the charging pile is improved.
[0017] When the new energy vehicle is completed, the user holds the charging gun and takes it off from the charging port of the new energy vehicle, the female head installed on the male head of the charging gun is slid into the corresponding accommodation groove, the first motor drives the gear box to run, the gear box drives the limiting shaft to slide out of the limiting hole, the limiting shaft passes through the through hole and pushes the first actuating member to slide and abut against the first inclined block, so that the two first inclined blocks slide and approach in the inclined groove, the first spring is compressed, the clamping block is separated from the clamping groove, the female head can be separated from the male head, and the female head is stored in the accommodation groove, so that the loss of the female head is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0019] Figure 2 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0020] Figure 3 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0021] Figure 4 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0022] Figure 5 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0023] Figure 6 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0024] Figure 7 It is a structure schematic view of the charging equipment with replaceable charging heads.
[0025] Figure 8 It is a structure schematic view of the charging equipment with replaceable charging heads. DETAILED DESCRIPTION
[0026] The utility model will be further described and explained in connection with specific embodiments and the accompanying drawings of the specification:
[0027] Please refer to Figure 1 .
[0028] The utility model discloses a charging equipment of replaceable charging head, including charging gun 1 and charging stake 3.
[0029] Charging gun 1 is electrically connected with charging stake 3 through cable.
[0030] Please refer to Figure 2 .
[0031] The male head 2 is provided on the charging gun 1, and a plurality of first contact pins 21 are provided on the male head 2 and electrically connected with the charging gun 1; the male head 2 extends a foolproof convex 22, and two clamping blocks 23 are slidably connected in the male head 2, the clamping blocks 23 pass through the outer side of the male head 2, and the two clamping blocks 23 are located on the two sides of the foolproof convex 22; a first inclined block 231 is provided on the clamping block 23, the two first inclined blocks 231 are located between the two clamping blocks 23, a first spring 232 is arranged between the two first inclined blocks 231, the two ends of the first spring 232 respectively abut the two first inclined blocks 231, and the inclined surfaces of the two first inclined blocks 231 respectively face two directions; a first driving member 24 is slidably connected in the male head 2, an inclined slot is formed in the first driving member 24, the cross section of the inclined slot is preferably an obtuse angle in the embodiment, the two edges of the inclined slot respectively abut the inclined surfaces of the two first inclined blocks 231, a through hole is formed in the male head 2, the through hole is close to the first driving member 24, and the through hole is located on the foolproof convex 22.
[0032] By pushing the first driving member 24 to slide on the male head 2, the two edges of the inclined slot respectively abut and slide on the inclined surfaces of the two first inclined blocks 231, so that the two first inclined blocks 231 slide on the male head 2 and approach each other, and the first spring 232 is compressed; in the process that the two first inclined blocks 231 slide and approach each other, the clamping blocks 23 are pulled into the male head 2; when the pushing of the first driving member 24 is stopped, the first spring 232 pushes the two first inclined blocks 231 to slide away from each other and reset, the clamping blocks 23 extend out of the male head 2 and reset, and the inclined surfaces of the first inclined blocks 231 abut the inclined slot, so that the first driving member 24 slides and resets.
[0033] Please refer to Figure 1 、 Figure 3 and Figure 4 .
[0034] A plurality of accommodation boxes 4 are arranged on the charging stake 3, the accommodation boxes 4 are embedded on the outer side of the charging stake 3, and the plurality of accommodation boxes 4 are arranged on the outer side of the charging stake 3 at intervals.
[0035] The accommodation box 4 is provided with an accommodation groove 41, the inner wall of the accommodation groove 41 extends a first anti-stupid surface, and the accommodation groove 41 is provided with a mounting hole penetrating through the accommodation box 4.
[0036] A plurality of female heads are placed in the accommodation groove 41, and the plurality of female heads are matched with charging ports of a plurality of new energy vehicles respectively; the outer side of the female head is provided with a second anti-stupid surface, the first anti-stupid surface abuts against the second anti-stupid surface, and the first anti-stupid surface of the accommodation groove 41 abuts against the second anti-stupid surface of the female head, so that the female head is kept at a fixed angle when placed in the accommodation groove 41, and the male head 2 of the charging gun 1 is convenient to connect with the female head;
[0037] Further, the female head is provided with a plug-in groove, the plug-in groove faces the outer side of the accommodation groove 41, the accommodation groove 41 is provided with a plurality of second contact pins penetrating through the female head, the inner wall of the plug-in groove is provided with an anti-stupid groove, the inner wall of the plug-in groove is provided with two clamping grooves 61, and the two clamping grooves 61 are located on the two sides of the inner wall of the anti-stupid groove respectively; the groove bottom of the plug-in groove is provided with a limiting hole 62 penetrating through the female head, the mounting hole and the limiting hole 62 are located on the same axis, and the inner wall of the limiting hole 62 extends two limiting surfaces, the two limiting surfaces are parallel to each other, and the limiting surface is close to the plug-in groove.
[0038] Please refer to Figures 5-7 .
[0039] The accommodation box 4 is provided with a gear box 5, the gear box 5 is connected with a first motor 52, the gear box 5 is rotatably connected with a first rotating shaft 53, the output shaft of the first motor 52 is fixedly connected with the first rotating shaft 53, the first rotating shaft 53 extends a second inclined block 531, the axis of the first rotating shaft 53 is rotatably connected with a second rotating shaft 54, the outer side of the second rotating shaft 54 extends a third inclined block 541, and the inclined surface of the second inclined block 531 abuts against the inclined surface of the third inclined block 541.
[0040] Further, the inner wall of the gear box 5 extends a first positioning block 511, and the first positioning block 511 is preferably a 180° circular arc in the embodiment, and the center of the first positioning block 511 is located on the axis of the first rotating shaft 53; the first rotating shaft 53 extends a second positioning block 533, and the second positioning block 533 is preferably a 90° circular arc in the embodiment, and the outer side of the first positioning block 511 abuts against the outer side of the second positioning block 533.
[0041] Further, the first rotating shaft 53 is provided with a sliding groove 532, and the sliding groove 532 is preferably a 180° circular arc in the embodiment; the second rotating shaft 54 extends a sliding block 542, and the sliding block 542 is preferably a 90° sector in the embodiment, the sliding block 542 is slidingly connected in the sliding groove 532, and the outer side of the second rotating shaft 54 is provided with a tension spring 543, and the two ends of the tension spring 543 are fixedly connected with the first rotating shaft 53 and the second rotating shaft 54 respectively.
[0042] The gear box 5 is slidably connected with a limiting shaft 55, the limiting shaft 55 penetrates into the accommodating groove 41 and is in sliding contact with the limiting hole 62, the limiting shaft 55 is fixedly connected with the shaft center of the second rotating shaft 54, the outer side of the limiting shaft 55 is sleeved with a second spring 551, the two ends of the second spring 551 respectively abut against the second rotating shaft 54 and the inner wall of the gear box 5; the limiting shaft 55 extends with a contact head 552, the outer side of the limiting shaft 55 is provided with two cut surfaces 553, the cut surfaces 553 are located on the contact head 552, the cut surfaces 553 are in sliding contact with the adjacent limiting surfaces, and the limiting shaft 55 is provided with an annular groove 554, and the annular groove 554 is close to the contact head 552.
[0043] Please refer to Figure 4 and Figure 8 .
[0044] Both sides of the accommodating box 4 are provided with a groove 42, the groove 42 is provided with a notch, the notch is close to the edge of the insertion groove, and the groove 42 is provided with a limiting assembly 43;
[0045] The limiting assembly 43 comprises a limiting block 431 and a third spring 432, the limiting block 431 is in sliding connection with the groove 42, one end of the limiting block 431 penetrates out of the groove 42 from the notch and is close to the edge of the accommodating groove 41, and the two ends of the third spring 432 abut against the inner wall of the groove 42 and the other end of the limiting block 431 respectively;
[0046] The gear box 5 is slidably connected with two limiting rods 56 and a fourth spring 561, one end of the limiting rod 56 penetrates into the groove 42, the two limiting rods 56 are connected together through an adapter rod extending between the two limiting rods 56, the adapter rod is close to the other end of the limiting rod 56, the adapter rod can make the two limiting rods 56 slide synchronously in the gear box 5, and the two ends of the fourth spring 561 abut against one end of the limiting rod 56 and the inner wall of the groove 42 respectively; one end of the limiting rod 56 is close to the other end of the limiting block 431, and the width of the limiting rod 56 is less than the width between the inner wall of the groove 42 and the other end of the limiting block 431;
[0047] Further, the limiting rod 56 is provided with a fourth inclined block 562, and the fourth inclined block 562 is located on the adapter rod; the inner wall of the gear box 5 is slidably connected with a second driving member 563, the second driving member 563 is provided with a rack, the outer side of the gear box 5 is fixedly connected with a second motor 57, the output shaft of the second motor 57 is fixedly connected with a gear 571, the gear 571 is in mesh with the rack, the second driving member 563 is provided with a fifth inclined block, and the fourth inclined block 562 abuts against the fifth inclined block.
[0048] Please refer to Figures 1-8 .
[0049] The user starts the operation of the charging pile 3, selects the female head matching the charging port of the new energy vehicle, and places the female head on the output shaft of the second motor 57 to drive the gear 571 to rotate in the positive direction. The gear 571 drives the second shifting member 563 to slide in the gear box 5 through the rack, so that the fourth inclined block 562 does not abut against the fifth inclined block, and the fourth spring 561 pushes one end of the limiting rod 56 to be separated from the other end of the limiting block 431 in the inner wall of the slot 42;
[0050] The user holds the charging gun 1 and slides the male head 2 into the insertion slot of the female head. During the sliding insertion into the female head, the male head 2 abuts against and pushes the limiting block 431 into the slot 42, the limiting block 431 compresses the third spring 432, and the male head 2 can enter the insertion slot of the female head while the female head can lose the limiting of the limiting block 431. The anti-fooling protrusion 22 is clamped into the anti-fooling groove, and after the clamping block 23 is clamped into the adjacent clamping groove 61, the first contact pin 21 is electrically connected with the second contact pin, so that the electric energy of the male head 2 is transmitted to the female head. The user holds the charging gun 1 and slides the female head into the charging port of the new energy vehicle. The female head transmits electric energy to the charging port of the new energy vehicle through the second contact pin to charge the new energy vehicle.
[0051] When the new energy vehicle is charged, the charging gun 1 is removed from the charging port of the new energy vehicle, and the user holds the charging gun 1 and slides the female head into the corresponding accommodation slot 41 to reset the female head. The first motor 52 drives the first rotating shaft 53 to rotate in the positive direction, the first limiting block 511 limits the second limiting block 533 to rotate only by 90°, so that the first rotating shaft 53 can only rotate by 90°. The inclined surface of the limiting hole 62 limits the rotation of the limiting shaft 55 and the second rotating shaft 54 through the cutting surface 553, the inclined surface of the second inclined block 531 pushes the inclined surface of the third inclined block 541, so that the second rotating shaft 54 compresses the second spring 551, the first rotating shaft 53 and the second rotating shaft 54 stretch the tension spring 543, and the second rotating shaft 54 pushes the limiting shaft 55 to slide out of the limiting hole 62. The through hole and the limiting hole 62 are located on the same axis, the contact head 552 penetrates into the through hole and pushes the first shifting member 24 to slide, so that the clamping block 23 is separated from the clamping groove 61.
[0052] The contact head 552 completely extends out of the limiting hole 62, the annular groove 554 is located on the limiting surface, the cutting surface 553 of the limiting shaft 55 loses the limitation of the limiting surface of the limiting hole 62, so that the tension spring 543 pulls the second rotating shaft 54 to rotate, the sliding groove 532 limits the sliding block 542 to rotate only by 90°, so that the second rotating shaft 54 can only rotate by 90° on the first rotating shaft 53, and the contact head 552 is clamped on the edge of the limiting hole 62, so that the female head is separated from the male head 2 under the limitation of the contact head 552 of the limiting rod 56 when the charging gun 1 is pulled out, the female head is accommodated in the accommodation box 4, and loss is avoided.
[0053] After the user pulls out the charging gun 1, the first toggle piece 24 is reset by contacting the top of the head 552, and the clamping block 23 is also reset synchronously; the limiting block 431 is pushed to slide out of the slot position 42 by the third spring 432 after losing the top of the male head 2, and the two limiting blocks 431 limit the female head in the storage slot 41; the output shaft of the second motor 57 drives the gear 571 to reverse, the gear 571 drives the second toggle piece 563 to slide in the gear box 5 through the rack, the inclined surface of the fourth inclined block 562 contacts the inclined surface of the fifth inclined block, the fourth inclined block 562 pushes the connecting rod through the fifth inclined block to make the limiting rod 56 slide close to the limiting block 431, and one end of the limiting rod 56 is clamped between the inner wall of the slot position 42 and the other end of the limiting block 431, so that the limiting block 431 cannot be put into the slot position 42;
[0054] The first motor 52 drives the first rotating shaft 53 to reverse, the sliding groove 532 of the first rotating shaft 53 pushes the sliding block 542 to make the second rotating shaft 54 rotate and reset synchronously, the limiting shaft 55 rotates 90° to reset, so that the cutting surface 553 is parallel to the limiting surface, the contact head 552 cannot be clamped on the edge of the limiting hole 62, the second spring 551 pushes the second rotating shaft 54 to reset, and the contact head 552 is reset and put into the limiting hole 62.
[0055] The utility model provides a kind of replaceable charging head's charging equipment, the multiple female heads matching different new energy automobile charging ports are placed in multiple storage boxes respectively, when user needs to charge, user selects the female head matching new energy automobile charging port, the male head of the charging gun is slid into the plug-in slot of female head, two clamping blocks are respectively clamped into adjacent clamping groove, so that female head is fixed on male head and is electrically connected, user holds charging gun and inserts female head into the charging port of new energy automobile to charge new energy automobile, so that user can replace female head on charging gun with the charging port of own vehicle model on the same charging pile, improve the versatility of charging pile.
[0056] When new energy automobile completes charging, user holds charging gun and removes from the charging port of new energy automobile, and the female head installed on the male head of charging gun is slid into corresponding storage slot, the gear box is operated by the first motor, the limiting shaft is slid out of limiting hole by the operation of gear box, the limiting shaft passes through through hole and pushes the first toggle piece to slide and contact the first inclined block, so that two first inclined blocks slide close in inclined groove, and first spring is compressed, so that clamping block is separated from clamping groove, female head can be separated from male head, and stored in storage slot, to avoid loss of female head.
[0057] It should be explained finally that the above embodiment is only used to illustrate the technical scheme of the utility model, and is not the limit of the protection scope of the utility model, although the utility model is explained in detail with reference to the preferred embodiment, the ordinary skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently, and does not deviate from the essence and scope of the technical scheme of the utility model.
Claims
1. A charging device with a replaceable charging head, characterized in that: Including charging gun and charging pile; The charging gun is electrically connected to the charging pile, and the charging gun is provided with a male connector. Two clamping blocks are slidably connected to the male connector. The clamping blocks are provided with a first inclined block. A first spring is provided between the two first inclined blocks. A first toggle is slidably connected to the male connector. The first toggle is provided with an inclined groove, which contacts the first inclined block. The clamping block passes through the outside of the male connector. A through hole is provided on the male connector, and the through hole is close to the first toggle. The charging pile is provided with a plurality of receiving boxes, each of which is provided with a receiving slot, a female connector is placed in the receiving slot, a plugging slot is provided on the female connector, two card slots are provided on the inner wall of the plugging slot, the bottom of the plugging slot passes through a limiting hole, and the through hole and the limiting hole are located on the same axis; The receiving box is provided with a gear box, the gear box is connected to a first motor, the output shaft of the first motor is connected to the gear box, the gear box is slidably connected to a limit shaft, the limit shaft penetrates into the receiving groove and is in sliding contact with the limit hole; The male head is slidably inserted into one of the plug-in slots, and the card block is inserted into the adjacent card slot.
2. A charging device with a replaceable charging head as claimed in claim 1, characterized in that: An anti-fouling protrusion extends from the male head, the two clamping blocks are respectively located on both sides of the anti-fouling protrusion, and the through hole is located on the anti-fouling protrusion.
3. A charging device with a replaceable charging head as claimed in claim 2, characterized in that: An anti-foolproof groove is provided on the inner wall of the plug-in slot, and the two card slots are respectively located on both sides of the inner wall of the anti-foolproof groove, and the anti-foolproof protrusion is snapped into one of the anti-foolproof grooves.
4. A charging device with a replaceable charging head as claimed in claim 3, characterized in that: A first fool-proof surface is extended from the inner wall of the receiving groove, and a second fool-proof surface is opened on the outer side of the female head, and the first fool-proof surface contacts the second fool-proof surface.
5. A charging device with a replaceable charging head as claimed in claim 4, characterized in that: A limiting surface is extended from the inner wall of the limiting hole, and a cut surface is opened on the outer side of the limiting shaft, and the cut surface is in sliding contact with the limiting surface. A first rotating shaft is rotatably connected in the gear box, and the output shaft of the first motor is fixedly connected to the first rotating shaft. A second inclined block extends on the first rotating shaft, and a second rotating shaft is rotatably connected on the first rotating shaft. A third inclined block extends on the second rotating shaft, and the limiting shaft is fixedly connected to the second rotating shaft. A second spring is sleeved on the outer side of the limiting shaft, and the two ends of the second spring respectively touch the second rotating shaft and the inner wall of the gear box.
6. A charging device with a replaceable charging head as claimed in claim 5, characterized in that: A sliding groove is provided on the first rotating shaft, a slider is extended on the second rotating shaft, the slider is placed in the sliding groove and is slidably connected, a tension spring is provided on the outer side of the second rotating shaft, and the two ends of the tension spring are fixedly connected to the first rotating shaft and the second rotating shaft respectively, a contact head is extended on the limiting shaft, the cross section is located on the contact head, an annular groove is provided on the limiting shaft, and the annular groove is close to the contact head.
7. A charging device with a replaceable charging head as claimed in claim 6, characterized in that: A slot is provided on the storage box, and a limit assembly is provided in the slot. The limit assembly includes a limit block and a third spring. The limit block is slidably connected to the slot, and the limit block passes through the slot near the edge of the storage slot. The two ends of the third spring respectively touch the inner wall of the slot and the limit block.
8. A charging device with a replaceable charging head as claimed in claim 7, characterized in that: A limit rod and a fourth spring are slidably connected in the gear box, the limit rod penetrates into the slot, and the two ends of the fourth spring respectively touch the limit rod and the inner wall of the slot, the limit rod is provided with a fourth oblique block, and a second toggle member is slidably connected to the inner wall of the gear box, and the second toggle member is provided with a rack, the outer side of the gear box is fixedly connected to the second motor, and a gear is fixedly connected to the output shaft of the second motor, the gear is meshed with the rack, and a fifth oblique block is provided on the second toggle member, and the fourth oblique block touches the fifth oblique block.