Hand-held electric drill with vibration damping structure

Abstract

The application relates to the technical field of handheld electric drills, in particular to a handheld electric drill with a vibration buffering structure, which comprises an electric drill body, a buffering assembly, a switching assembly, a rotating assembly, a replacing assembly, a mounting assembly, a handle, a battery mounting shell and a grip; the buffering assembly effectively blocks the transmission of vibration from the electric drill body to the handle, thereby avoiding hand fatigue and numbness of an operator during long-term use; the switching assembly is used for conveniently switching the buffering mode and the rigid mode, so that the electric drill body can be flexibly adapted to the operation requirements of different loads, the application range is widened, the rotating assembly and the replacing assembly are matched, multi-dimensional adjustment and quick replacement of the grip are realized, the holding experience is optimized, the electric drill body can adapt to complex operation environments and diversified operation personnel requirements, and the operation difficulty is reduced; the mounting assembly is used for quickly disassembling and assembling the battery mounting shell, the downtime for battery replacement of the electric drill body is reduced, and the continuous operation efficiency is ensured.

Description

Technical Field

[0001] This invention relates to the field of handheld electric drill technology, specifically a handheld electric drill with a vibration buffer structure. Background Technology

[0002] A handheld electric drill is a portable tool that is electrically powered and uses a rotating drill bit to drill holes. It is widely used in construction, decoration, furniture manufacturing and other fields.

[0003] However, current handheld drills generate continuous vibrations during operation due to the motor's operation and the drill bit's cutting. These vibrations are directly transmitted to the handle, and prolonged use can easily lead to hand fatigue and numbness, even affecting operational accuracy and increasing the risk of errors. Although some handheld drills have simple spring-loaded cushioning structures, the cushioning effect is limited, and they cannot switch between different cushioning states depending on the work scenario (such as light-load drilling versus heavy-load drilling), resulting in poor adaptability. Traditional drills have fixed handle positions, making it difficult to find a comfortable grip when working in confined spaces (such as corners or inside cabinets) or when operators have varying hand sizes, increasing the difficulty of operation. Most drill batteries are secured with multiple screws or complex clips, requiring tools for battery replacement, which is time-consuming and affects continuous work efficiency. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a handheld electric drill with a vibration buffer structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a handheld electric drill with a vibration buffer structure, including an electric drill body, a handle disposed on the electric drill body, and a buffer assembly disposed between the electric drill body and the handle;

[0006] The buffer assembly includes a first groove and a first slider. The drill body has a first groove, and the bottom end of the handle is fixedly connected to the first slider. The first slider is slidably connected inside the first groove. Two first springs are fixedly connected between the first slider and the drill body. A cylinder is fixedly connected inside the drill body, and a piston is slidably connected inside the cylinder. An oil seal is installed on the cylinder, and a connecting rod is fixedly connected to the piston. The connecting rod is slidably connected to the oil seal. A valve core is fixedly connected inside the cylinder, and the valve core controls the cylinder... The internal space of the cylinder is divided into an oil storage chamber and a hydraulic oil chamber. The hydraulic oil chamber is filled with hydraulic oil. The valve core has multiple backflow oil passages and multiple forwardflow oil passages arranged in a circular array. A T-shaped fixed post is fixedly connected to the valve core. A sealing ring is slidably connected to the fixed post. The sealing ring abuts against the valve core. Multiple flushing holes are arranged in a circular array on the sealing ring. A second spring is fixedly connected between the sealing ring and the fixed post. A T-shaped limiting piece is fixedly connected to the side of the valve core away from the fixed post. A sealing spring is installed on the limiting piece.

[0007] Specifically, the drill body has two guide rods fixedly connected inside, the first slider is slidably connected to the guide rods, the guide rods pass through the inside of the first spring, and a dust cover is fixedly connected between the oil seal and the handle, and the dust cover is sleeved on the outside of the connecting rod.

[0008] Specifically, the electric drill body is equipped with a switching component, which includes a sliding plate and a screw. The sliding plate is slidably connected inside the electric drill body, and the screw is rotatably connected to the electric drill body. The screw is threadedly connected to the sliding plate, and a knob is fixedly connected to the screw. Multiple limiting posts are fixedly connected to the sliding plate, and multiple limiting holes are provided at the bottom end of the first slider. The limiting posts engage with the limiting holes.

[0009] Specifically, a guide post is fixedly connected inside the drill body, and the slide plate is slidably connected to the guide post.

[0010] Specifically, the drill body is provided with a rotating assembly, the rotating assembly is provided with a replacement assembly, the bottom end of the replacement assembly is provided with a handle, the rotating assembly includes a fixed sleeve and a rotating drum, the fixed sleeve is fixedly connected to the drill body, the rotating drum is rotatably connected inside the fixed sleeve, the end of the rotating drum is fixedly connected with a connecting seat, the connecting seat is provided with a replacement assembly, an external gear ring is fixedly connected to the rotating drum, a sealing plate is fixedly connected to the fixed sleeve by screws, an internal gear ring is slidably connected inside the rotating drum, multiple third springs are fixedly connected between the internal gear ring and the sealing plate, the fixed sleeve is provided with a slot, a lever is fixedly connected to the internal gear ring, and the lever is slidably connected to the slot.

[0011] Specifically, multiple guide shafts are fixedly connected to the sealing plate, the internal gear ring is slidably connected to the guide shafts, and the guide shafts pass through the interior of the third spring.

[0012] Specifically, the replacement component includes a second slide groove and guide bars. The connecting seat is provided with a second slide groove. Two guide bars are fixedly connected inside the connecting seat. A second slider is slidably connected inside the second slide groove. The second slider is slidably connected to the guide bars. Two fourth springs are fixedly connected to each side of the second slider. The end of the fourth spring away from the second slider is fixedly connected to the connecting seat. The fourth spring is sleeved on the outside of the guide bars. An accordion cover is provided between the second slider and the connecting seat. A sleeve is fixedly connected to the bottom end of the second slider. A plug is fixedly connected to the handle. The plug is inserted into the sleeve.

[0013] Specifically, a bolt is rotatably connected to the sleeve, the bolt passes through the insert block, and a nut is embedded in the sleeve, with the bolt and nut being threadedly connected.

[0014] Specifically, the bottom of the electric drill body is provided with a mounting assembly, and a battery mounting shell is mounted on the bottom of the electric drill body through the mounting assembly. The mounting assembly includes positioning holes, and the bottom of the electric drill body has four positioning holes. Four positioning pins are fixedly connected to the battery mounting shell, and the positioning pins are inserted into the positioning holes. Four inserts with V-shaped bottom cross-sections are fixedly connected to the electric drill body. Four guide blocks with V-shaped opening cross-sections are fixedly connected to the battery mounting shell. The inserts have locking holes. Two mounting boxes are fixedly connected inside the battery mounting shell. A connecting strip is slidably connected inside the mounting box. Two locking pins are fixedly connected to the connecting strip, and the locking pins engage with the locking holes. A fifth spring is fixedly connected between the connecting strip and the mounting box. The locking pins are slidably connected to the battery mounting shell. Two buttons are slidably connected to the battery mounting shell, and the two buttons are fixedly connected to the two connecting strips respectively.

[0015] Specifically, the mounting box has two fixed rods inside, the connecting strip is slidably connected to the fixed rods, and the fixed rods pass through the interior of the fifth spring.

[0016] The beneficial effects of this invention are:

[0017] (1) The handheld electric drill with vibration buffer structure described in this invention has a buffer component on the drill body. The buffer component can effectively reduce vibration and block the transmission of vibration from the drill body to the handle, avoiding hand fatigue and numbness caused by long-term use by the operator. At the same time, it reduces the impact of vibration on the operation accuracy and reduces the risk of operation error.

[0018] (2) The handheld electric drill with vibration buffer structure described in this invention is provided with a switching component on the drill body. The switching component enables convenient switching between buffer mode and rigid mode, allowing the same electric drill body to flexibly adapt to different load operation requirements, thus broadening the applicability of the equipment.

[0019] (3) The handheld electric drill with vibration buffer structure described in this invention has a rotating component on the drill body and a replacement component on the rotating component. The cooperation between the rotating component and the replacement component enables multi-dimensional adjustment and quick replacement of the handle, greatly optimizing the grip experience. The drill body can adapt to complex working environments and diverse operator needs, reducing the difficulty of operation and reducing operational errors caused by grip discomfort.

[0020] (4) The handheld electric drill with vibration buffer structure described in this invention has an installation component on the drill body. The installation component enables tool-free quick disassembly and assembly of the battery housing, which can effectively reduce downtime for replacing the battery in the drill body and ensure continuous operation efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a handheld electric drill with a vibration buffer structure provided by the present invention;

[0023] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0024] Figure 3 This is a schematic diagram of the connection structure between the drill body and the handle of the present invention;

[0025] Figure 4 for Figure 3 The diagram shown is an enlarged view of the structure of section B.

[0026] Figure 5 for Figure 3 The diagram shows an enlarged view of section C.

[0027] Figure 6 for Figure 3 The diagram shown is an enlarged view of the structure of part D.

[0028] Figure 7 for Figure 5 The diagram shown is an enlarged view of the E-section structure.

[0029] Figure 8 for Figure 6 The diagram shows an enlarged view of the F-section structure.

[0030] Figure 9 This is a schematic diagram of the connection structure between the electric drill body and the battery mounting shell of the present invention;

[0031] Figure 10 for Figure 9 The diagram shows an enlarged view of the G section structure.

[0032] Figure 11 This is a schematic diagram of the connection structure between the electric drill body and the slide plate of the present invention;

[0033] Figure 12 for Figure 11 The diagram shown is an enlarged view of the H-section structure.

[0034] Figure 13 This is a schematic diagram of the connection structure between the handle and the dust cover of the present invention;

[0035] Figure 14 for Figure 13 The diagram shows an enlarged view of the structure of part I.

[0036] In the diagram: 1. Drill body; 2. Buffer assembly; 201. First slide groove; 202. First slider; 203. Guide rod; 204. First spring; 205. Cylinder; 206. Piston; 207. Oil seal; 208. Connecting rod; 209. Dust cover; 210. Valve core; 211. Oil reservoir; 212. Hydraulic oil chamber; 213. Backflush oil passage; 214. Forward flush oil passage; 215. Fixed post; 216. Sealing ring; 217. Flushing hole; 218. Second spring; 219. Limiting plate; 220. Sealing spring; 3. Switching assembly; 301. Slide plate; 302. Screw; 303. Knob; 304. Limiting post; 305. Limiting hole; 306. Guide post; 4. Rotating assembly; 401. Fixed sleeve; 402. 403. Rotary drum; 404. Connecting seat; 405. External gear ring; 406. Sealing plate; 407. Internal gear ring; 408. Guide shaft; 409. Third spring; 410. Empty slot; 5. Toggle block; 5. Replacement component; 501. Second slide groove; 502. Guide strip; 503. Second slider; 504. Fourth spring; 505. Bellows cover; 506. Insert sleeve; 507. Insert block; 508. Bolt; 509. Nut; 6. Mounting component; 601. Positioning hole; 602. Positioning post; 603. Guide block; 604. Insert strip; 605. Locking hole; 606. Mounting box; 607. Connecting strip; 608. Locking post; 609. Button; 610. Fixing rod; 611. Fifth spring; 7. Handle; 8. Battery mounting shell; 9. Grip. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Figure 13 As shown, the handheld electric drill with vibration buffer structure of the present invention includes a drill body 1, a handle 7 disposed on the drill body 1, and a buffer assembly 2 disposed between the drill body 1 and the handle 7.

[0039] The buffer assembly 2 includes a first slide groove 201 and a first slider 202. The drill body 1 is provided with the first slide groove 201. The bottom end of the handle 7 is fixedly connected to the first slider 202, which is slidably connected inside the first slide groove 201. Two first springs 204 are fixedly connected between the first slider 202 and the drill body 1. A cylinder 205 is fixedly connected inside the drill body 1. A piston 206 is slidably connected inside the cylinder 205. An oil seal 207 is installed on the cylinder 205. A connecting rod 208 is fixedly connected to the piston 206, and the connecting rod 208 is slidably connected to the oil seal 207. A valve core 210 is fixedly connected inside the cylinder 205, which divides the internal space of the cylinder 205 into an oil storage chamber 211 and a hydraulic chamber 212. The hydraulic oil chamber 212 is filled with hydraulic oil. The valve core 210 has multiple backflow oil channels 213 and multiple forwardflow oil channels 214 arranged in a circumferential array. A T-shaped fixed post 215 is fixedly connected to the valve core 210. A sealing ring 216 is slidably connected to the fixed post 215, and the sealing ring 216 abuts against the valve core 210. Multiple flushing holes 217 are arranged in a circumferential array on the sealing ring 216. A second spring 218 is fixedly connected between the sealing ring 216 and the fixed post 215. A T-shaped limiting piece 219 is fixedly connected to the side of the valve core 210 away from the fixed post 215. A sealing spring 220 is installed on the limiting piece 219. When the drill body 1 vibrates forward (the handle 7 moves closer to the drill body 1), the handle 7 drives the first slider. 202 slides inside the first groove 201, compressing the first spring 204. The first spring 204 provides initial buffering. At the same time, the handle 7 drives the connecting rod 208 and the piston 206 to move into the cylinder 205. The hydraulic oil in the hydraulic oil chamber 212 is pressurized and then enters the positive flow oil passage 214 from the oil flushing hole 217 on the sealing ring 216, causing the sealing spring 220 to deform. The hydraulic oil then enters the oil storage chamber 211 from the inside of the hydraulic oil chamber 212. The hydraulic oil generates damping force during the flow, weakening the vibration. When the drill body 1 vibrates in the opposite direction (the handle 7 moves away from the drill body 1), the first spring 204 rebounds, causing the handle 7 to return to its original position. The piston 206 moves in the opposite direction, and the hydraulic oil pressure in the oil storage chamber 211 is high. The hydraulic oil in the hydraulic oil chamber 212... When the internal oil pressure is low, the hydraulic oil backflows, the sealing spring 220 resets and seals the forward flow oil passage 214, and the hydraulic oil pushes open the sealing ring 216 from the backflow oil passage 213. The second spring 218 is compressed and flows back to the hydraulic oil chamber 212, completing the reset and further absorbing the reverse vibration. There are two guide rods 203 fixedly connected inside the drill body 1. The first slider 202 is slidably connected to the guide rod 203. The guide rod 203 passes through the inside of the first spring 204. A dust cover 209 is fixedly connected between the oil seal 207 and the handle 7. The dust cover 209 is sleeved on the outside of the connecting rod 208. The dust cover 209 is fixed between the oil seal 207 and the handle 7. The dust cover 209 is sleeved on the outside of the connecting rod 208 to prevent dust from entering the cylinder 205 and affecting the hydraulic damping effect.

[0040] Specifically, such as Figure 4 and Figure 11 As shown, the drill body 1 has a switching assembly 3 inside, which includes a slide plate 301 and a screw 302. The slide plate 301 is slidably connected inside the drill body 1, and the screw 302 is rotatably connected to the drill body 1. The screw 302 is threadedly connected to the slide plate 301, and a knob 303 is fixedly connected to the screw 302. Multiple limiting posts 304 are fixedly connected to the slide plate 301. The bottom end of the first slider 202 has multiple limiting holes 305, and the limiting posts 304 engage with the limiting holes 305. A guide post 306 is fixedly connected inside the drill body 1, and the slide plate 301 and the guide post... 306 sliding connection. When the buffer function is turned on or off according to the operation requirements (such as turning off the buffer to improve operation stability during light-load operation), the knob 303 can be turned clockwise or counterclockwise. When the knob 303 is turned clockwise, the screw 302 drives the slide plate 301 to move downward, the limit post 304 disengages from the limit hole 305, the first slider 202 can slide freely, and the buffer component 2 is activated. When the knob 303 is turned counterclockwise, the screw 302 drives the slide plate 301 to move upward, the limit post 304 engages with the limit hole 305, and the first slider 202 and handle 7 are fixed, and the buffer function is turned off.

[0041] Specifically, such as Figure 1 , Figure 3 , Figure 5 , Figure 7 , Figure 9 , Figure 10 , Figure 13 and Figure 14As shown, the drill body 1 is provided with a rotating assembly 4, and the rotating assembly 4 is provided with a replacement assembly 5. The bottom end of the replacement assembly 5 is provided with a handle 9. The rotating assembly 4 includes a fixed sleeve 401 and a rotating drum 402. The fixed sleeve 401 is fixedly connected to the drill body 1. The rotating drum 402 is rotatably connected inside the fixed sleeve 401. The end of the rotating drum 402 is fixedly connected with a connecting seat 403. The replacement assembly 5 is provided on the connecting seat 403. An external gear ring 404 is fixedly connected to the rotating drum 402. A sealing plate 405 is fixedly connected to the fixed sleeve 401 by screws. An internal gear ring 406 is slidably connected inside the rotating drum 402. Multiple third springs 408 are fixedly connected between the internal gear ring 406 and the sealing plate 405. The fixed sleeve 401 is provided with a slot 409. The internal gear ring 406... A lever 410 is fixedly connected to the upper part, and the lever 410 is slidably connected to the slot 409. Multiple guide shafts 407 are fixedly connected to the sealing plate 405. The internal gear ring 406 is slidably connected to the guide shaft 407. The guide shaft 407 passes through the interior of the third spring 408. When it is necessary to adjust the circumferential angle of the handle 9 by rotating the assembly 4, the lever 410 can be pushed towards the sealing plate 405, which will cause the internal gear ring 406 to compress the third spring 408. The internal gear ring 406 will disengage from the external gear ring 404, and the rotating cylinder 402 can rotate freely, thereby driving the connecting seat 403 to adjust the angle of the handle 9. When it is necessary to fix the angle, the lever 410 is released, and the third spring 408 rebounds to push the internal gear ring 406 to reset and re-engage with the external gear ring 404, fixing the position of the rotating cylinder 402.

[0042] Replacement component 5 includes a second slide groove 501 and guide bars 502. The connecting seat 403 has the second slide groove 501. Two guide bars 502 are fixedly connected inside the connecting seat 403. A second slider 503 is slidably connected inside the second slide groove 501. The second slider 503 is slidably connected to the guide bars 502. Two fourth springs 504 are fixedly connected to each side of the second slider 503. The end of the fourth spring 504 facing away from the second slider 503 is fixedly connected to the connecting seat 403. The fourth spring 504 is sleeved on the outside of the guide bars 502. A bellows cover 505 is provided between the second slider 503 and the connecting seat 403. A sleeve 506 is fixedly connected to the bottom end of the second slider 503. A plug block 507 is fixedly connected to the grip 9, and the plug block 507 is inserted into the plug sleeve 506. A bolt 508 is rotatably connected to the plug sleeve 506, and the bolt 508 passes through the plug block 507. A nut 509 is embedded in the plug sleeve 506, and the bolt 508 and the nut 509 are threadedly connected. At the same time, the replacement component 5 realizes the axial buffer adjustment or quick replacement of the grip 9. When the grip 9 is subjected to axial force, it drives the second slider 503 to slide along the guide bar 502. The fourth spring 504 stretches or compresses to absorb the force and improve the grip comfort. When it is necessary to change to a different type of grip, the bolt 508 can be loosened and pulled out, and then the plug block 507 can be pulled out to replace the grip of a different specification to adapt to different work needs.

[0043] Specifically, such as Figure 2 and Figure 12 As shown, the bottom end of the drill body 1 is provided with a mounting assembly 6. A battery mounting housing 8 is mounted on the bottom end of the drill body 1 via the mounting assembly 6. The mounting assembly 6 includes positioning holes 601. The bottom end of the drill body 1 has four positioning holes 601. Four positioning pins 602 are fixedly connected to the battery mounting housing 8. The positioning pins 602 are inserted into the positioning holes 601. Four inserts 604 with V-shaped bottom cross sections are fixedly connected to the drill body 1. Four guide blocks 603 with V-shaped opening cross sections are fixedly connected to the battery mounting housing 8. The inserts 604 have locking holes 605. Two mounting boxes 606 are fixedly connected inside the battery mounting housing 8. A connecting strip 607 is slidably connected inside the mounting box 606. Two locking pins 608 are fixedly connected to the connecting strip 607. The locking pins 608 engage with the locking holes 605. A fifth spring 611 is fixedly connected between the connecting strip 607 and the mounting box 606. The locking pins 608 are slidably connected to the battery mounting housing 8. Next, two buttons 609 are slidably connected to the battery mounting case 8, and the two buttons 609 are fixedly connected to two connecting strips 607 respectively. Two fixing rods 610 are fixedly connected inside the mounting box 606, and the connecting strips 607 are slidably connected to the fixing rods 610. The fixing rods 610 pass through the interior of the fifth spring 611. When it is necessary to install a quick battery replacement, the two buttons 609 can be pressed at the same time, which will cause the connecting strips 607 to compress the fifth spring 611. The locking post 608 will disengage from the locking hole 605, and the battery mounting case 8 can be pulled out. After the battery is replaced, when installing the battery mounting case 8, the positioning post 602 can be aligned with the positioning hole 601, the battery mounting case 8 can be pressed, and the two buttons 609 can be pinched at the same time. After the insert strip 604 abuts against the guide block 603, the buttons 609 can be released. At this time, the locking post 608 is aligned with the locking hole 605, and the fifth spring 611 pushes the locking post 608 into the locking hole 605, completing the installation and fixing of the battery mounting case 8.

[0044] In use, when the drill body 1 vibrates forward (the handle 7 moves closer to the drill body 1), the handle 7 drives the first slider 202 to slide inside the first groove 201, compressing the first spring 204. The first spring 204 provides initial cushioning. Simultaneously, the handle 7 drives the connecting rod 208 and the piston 206 to move into the cylinder 205. The hydraulic oil in the hydraulic oil chamber 212 is pressurized and then enters the forward flushing oil passage 214 from the flushing hole 217 on the sealing ring 216, causing the sealing spring 220 to deform. The hydraulic oil then enters the oil storage chamber 211 from the inside of the hydraulic oil chamber 212. The flow of hydraulic oil generates damping force, which weakens the vibration. When the drill body 1 vibrates in the reverse direction (the handle 7 moves away from the drill body 1), the first spring 204 rebounds and drives the handle 7 to reset, the piston 206 moves in the reverse direction, the hydraulic oil pressure in the oil reservoir 211 is high, the oil pressure in the hydraulic oil chamber 212 is low, the hydraulic oil backflows, the sealing spring 220 resets and seals the forward flow oil passage 214, the hydraulic oil pushes open the sealing ring 216 from the backflow oil passage 213, the second spring 218 is compressed and flows back to the hydraulic oil chamber 212, completing the reset and further absorbing the reverse vibration. The oil seal 207 is fixed between the handle 7 and the dust cover 209. The dust cover 209 is sleeved on the outside of the connecting rod 208 to prevent dust from entering the cylinder 205 and affecting the hydraulic damping effect.

[0045] Then, when the buffer function is turned on or off according to the operation requirements (such as turning off the buffer to improve the operation stability during light-load operation), you can choose to turn the knob 303 clockwise or counterclockwise. When the knob 303 is turned clockwise, the screw 302 drives the slide plate 301 to move downward, the limit post 304 disengages from the limit hole 305, the first slider 202 can slide freely, and the buffer component 2 is activated. When the knob 303 is turned counterclockwise, the screw 302 drives the slide plate 301 to move upward, the limit post 304 engages with the limit hole 305, and the first slider 202 and the handle 7 are fixed, and the buffer function is turned off.

[0046] Secondly, when it is necessary to adjust the circumferential angle of the grip 9 by rotating component 4, the lever 410 can be pushed towards the sealing plate 405, which will cause the inner gear ring 406 to compress the third spring 408. The inner gear ring 406 will disengage from the outer gear ring 404, and the rotating cylinder 402 can rotate freely, thereby driving the connecting seat 403 to adjust the angle with the grip 9. When it is necessary to fix the angle, the lever 410 can be released, and the third spring 408 will rebound to push the inner gear ring 406 to reset and re-engage with the outer gear ring 404, fixing the position of the rotating cylinder 402. At the same time, the replacement component 5 can realize the axial buffer adjustment or quick replacement of the grip 9. When the grip 9 is subjected to axial force, it will drive the second slider 503 to slide along the guide bar 502. The fourth spring 504 will stretch or compress to absorb the force and improve the grip comfort. When it is necessary to replace different types of grips, the bolt 508 can be loosened and pulled out, and then the insert 507 can be pulled out to replace grips of different specifications to adapt to different work needs.

[0047] Finally, when it is necessary to install the quick-change battery, press both buttons 609 at the same time to drive the connecting strip 607 to compress the fifth spring 611. The locking post 608 will disengage from the locking hole 605, and the battery mounting shell 8 can be pulled out. After the battery is replaced, when installing the battery mounting shell 8, align the positioning post 602 with the positioning hole 601, press the battery mounting shell 8, and pinch both buttons 609 at the same time. After the insert strip 604 abuts against the guide block 603, release the buttons 609. At this time, the locking post 608 is aligned with the locking hole 605, and the fifth spring 611 pushes the locking post 608 into the locking hole 605, completing the installation and fixing of the battery mounting shell 8.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A handheld electric drill with a vibration buffer structure, characterized in that, It includes a drill body (1), a handle (7) disposed on the drill body (1), and a buffer assembly (2) disposed between the drill body (1) and the handle (7). The buffer assembly (2) includes a first slide groove (201) and a first slider (202). The drill body (1) is provided with the first slide groove (201). The bottom end of the handle (7) is fixedly connected to the first slider (202). The first slider (202) is slidably connected to the inside of the first slide groove (201). Two first springs (204) are fixedly connected between the first slider (202) and the drill body (1). A cylinder (205) is fixedly connected inside the drill body (1). A piston (206) is slidably connected inside the cylinder (205). An oil seal (207) is installed on the cylinder (205). A connecting rod (208) is fixedly connected to the piston (206). The connecting rod (208) is slidably connected to the oil seal (207). A valve core (210) is fixedly connected inside the cylinder (205). The valve core (210) controls the cylinder... The internal space of the cylinder (205) is divided into an oil storage chamber (211) and a hydraulic oil chamber (212). The hydraulic oil chamber (212) is filled with hydraulic oil. The valve core (210) is provided with multiple backflow oil passages (213) and multiple forward flow oil passages (214) arranged in a circular array. A fixed column (215) with a T-shaped cross section is fixedly connected to the valve core (210). A sealing ring (216) is slidably connected to the fixed column (215). The sealing ring (216) abuts against the valve core (210). Multiple flushing holes (217) are arranged in a circular array on the sealing ring (216). A second spring (218) is fixedly connected between the sealing ring (216) and the fixed column (215). A limiting piece (219) with a T-shaped cross section is fixedly connected to the side of the valve core (210) away from the fixed column (215). A sealing spring (220) is installed on the limiting piece (219).

2. A handheld electric drill with a vibration buffer structure according to claim 1, characterized in that: The drill body (1) has two guide rods (203) fixedly connected inside. The first slider (202) is slidably connected to the guide rods (203). The guide rods (203) pass through the inside of the first spring (204). A dust cover (209) is fixedly connected between the oil seal (207) and the handle (7). The dust cover (209) is sleeved on the outside of the connecting rod (208).

3. A handheld electric drill with a vibration buffer structure according to claim 1, characterized in that: The electric drill body (1) is provided with a switching component (3). The switching component (3) includes a sliding plate (301) and a screw (302). The sliding plate (301) is slidably connected inside the electric drill body (1). The screw (302) is rotatably connected to the electric drill body (1). The screw (302) is threadedly connected to the sliding plate (301). A knob (303) is fixedly connected to the screw (302). Multiple limiting posts (304) are fixedly connected to the sliding plate (301). Multiple limiting holes (305) are provided at the bottom end of the first slider (202). The limiting posts (304) engage with the limiting holes (305).

4. A handheld electric drill with a vibration buffer structure according to claim 3, characterized in that: The drill body (1) is internally fixedly connected to a guide post (306), and the slide plate (301) is slidably connected to the guide post (306).

5. A handheld electric drill with a vibration buffer structure according to claim 4, characterized in that: The drill body (1) is provided with a rotating assembly (4), the rotating assembly (4) is provided with a replacement assembly (5), the bottom end of the replacement assembly (5) is provided with a handle (9), the rotating assembly (4) includes a fixed sleeve (401) and a rotating drum (402), the fixed sleeve (401) is fixedly connected to the drill body (1), the rotating drum (402) is rotatably connected inside the fixed sleeve (401), the end of the rotating drum (402) is fixedly connected with a connecting seat (403), the connecting seat (403) is provided with a replacement assembly (5). An external gear ring (404) is fixedly connected to the rotating cylinder (402), and a sealing plate (405) is fixedly connected to the fixed sleeve (401) by screws. An internal gear ring (406) is slidably connected inside the rotating cylinder (402). A plurality of third springs (408) are fixedly connected between the internal gear ring (406) and the sealing plate (405). A slot (409) is provided on the fixed sleeve (401), and a lever (410) is fixedly connected to the internal gear ring (406). The lever (410) is slidably connected to the slot (409).

6. A handheld electric drill with a vibration buffer structure according to claim 5, characterized in that: Multiple guide shafts (407) are fixedly connected to the sealing plate (405), the internal gear ring (406) is slidably connected to the guide shafts (407), and the guide shafts (407) pass through the interior of the third spring (408).

7. A handheld electric drill with a vibration buffer structure according to claim 5, characterized in that: The replacement component (5) includes a second slide groove (501) and guide bars (502). The connecting seat (403) is provided with the second slide groove (501). Two guide bars (502) are fixedly connected inside the connecting seat (403). A second slider (503) is slidably connected inside the second slide groove (501). The second slider (503) is slidably connected to the guide bars (502). Two fourth springs (504) are fixedly connected to each side of the second slider (503). The fourth spring (504) is fixedly connected to the connecting seat (403) at one end away from the second slider (503). The fourth spring (504) is sleeved on the outside of the guide bar (502). An accordion cover (505) is provided between the second slider (503) and the connecting seat (403). A plug sleeve (506) is fixedly connected to the bottom end of the second slider (503). A plug block (507) is fixedly connected to the handle (9). The plug block (507) is inserted into the plug sleeve (506).

8. A handheld electric drill with a vibration buffer structure according to claim 7, characterized in that: A bolt (508) is rotatably connected to the sleeve (506), the bolt (508) passes through the insert (507), and a nut (509) is embedded in the sleeve (506), the bolt (508) and the nut (509) are threadedly connected.

9. A handheld electric drill with a vibration buffer structure according to claim 1, characterized in that: The bottom end of the drill body (1) is provided with a mounting assembly (6). A battery mounting shell (8) is mounted on the bottom end of the drill body (1) through the mounting assembly (6). The mounting assembly (6) includes positioning holes (601). The bottom end of the drill body (1) is provided with four positioning holes (601). Four positioning posts (602) are fixedly connected to the battery mounting shell (8). The positioning posts (602) are inserted into the positioning holes (601). Four inserts (604) with V-shaped bottom cross sections are fixedly connected to the drill body (1). Four guide blocks (603) with V-shaped opening cross sections are fixedly connected to the battery mounting shell (8). The inserts (604) The battery mounting housing (8) has a card hole (605). Two mounting boxes (606) are fixedly connected inside the battery mounting housing (8). A connecting strip (607) is slidably connected inside the mounting box (606). Two locking posts (608) are fixedly connected on the connecting strip (607). The locking posts (608) engage with the card hole (605). A fifth spring (611) is fixedly connected between the connecting strip (607) and the mounting box (606). The locking posts (608) are slidably connected to the battery mounting housing (8). Two buttons (609) are slidably connected on the battery mounting housing (8). The two buttons (609) are fixedly connected to the two connecting strips (607) respectively.

10. A handheld electric drill with a vibration buffer structure according to claim 9, characterized in that: The mounting box (606) has two fixed rods (610) inside, and the connecting strip (607) is slidably connected to the fixed rods (610). The fixed rods (610) pass through the interior of the fifth spring (611).

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