Electric charging drill for convenient drill bit replacement
By designing an automatic tightening mechanism and fixed structure in the electric charging drill, the problem of the electric drill requiring the joint operation of the drill bit with both hands is solved, which improves the replacement efficiency and safety and simplifies the operation process.
Patent Information
- Application Number
- CN202411404926.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-10-10
AI Technical Summary
The existing electric drill replacement drill bit requires the user to operate with both hands, which is time-consuming and has safety risks.
An electric charging drill including a drilling rig body, rotating shaft, chuck, support cylinder, clamp and mobile sleeve is designed. Automatic tightening operation is achieved through the coordination of the clamp rod and the block, and the tooth ring and the tooth block are fixed to the sliding ring and the clamp. The head and support hold the drill bit, and the chuck port is equipped with shrapnel and auxiliary rollers to simplify the installation and disassembly of the drill bit.
The automatic replacement of drill bits is realized, operating safety and efficiency are improved, the possibility of operation errors is reduced, and the stability and portability of the equipment are ensured.
Smart Images
Figure CN118905290B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of charging drills, and in particular to an electric charging drill which is convenient for replacing drill bits. Background Art
[0002] As a common power tool, the electric drill plays an important role in the construction industry. It is mainly used to drill holes in various materials, such as wood, metal, concrete, etc. According to different application scenarios, electric drills can be divided into various types such as hand drills, impact drills and hammer drills. Each type of electric drill has its own unique performance characteristics to meet the needs of different operations. For example, hand drills are suitable for light drilling tasks; impact drills can form holes in hard materials; and hammer drills are particularly suitable for drilling holes in solid materials such as concrete and masonry.
[0003] When using an electric drill, replacing the drill bit is a common operation. However, in existing electric drill designs, replacing the drill bit usually requires the user to use both hands, which brings inconvenience to the user. Specifically, the process of replacing the drill bit includes the following steps:
[0004] 1. Manually tighten or loosen the chuck: The user needs to hold the main part of the drill with one hand to provide stable support, and the other hand needs to tighten or loosen the chuck to fix or release the drill bit. It may require a certain amount of force, especially when the drill bit is tight. In some cases, the user can also hold the chuck, start the electric drill switch, and use the electric drill to tighten the drill bit.
[0005] 2. Use a wrench to operate: Some electric drills are equipped with a keyed chuck, which means that users need to use a matching wrench to manually tighten or loosen the chuck. This operation is not only time-consuming, but may also be difficult to operate in a small space.
[0006] 3. Safety hazards: During manual operation, the user's fingertips are likely to come into contact with the chuck or other moving parts, increasing the risk of accidental injury. In addition, improper operation may also cause the drill bit to be incompletely tightened or over-tightened, thus affecting the quality of subsequent operations. Summary of the invention
[0007] In order to overcome the shortcomings of existing electric drills that require the user to use both hands to replace the drill bit, are inconvenient for quick replacement, and have potential safety hazards, the technical problem of the present invention is to provide an electric rechargeable drill that is easy to replace the drill bit.
[0008] The technical solution is: an electric charging drill that is easy to replace a drill bit, including a drill body, a rotating shaft, a chuck, a supporting cylinder, a clamping block and a movable sleeve. The upper side of the drill body is rotatably connected with the rotating shaft, and the rotating shaft is connected to the motor output shaft inside the drill body. The chuck is rotatably connected to the rotating shaft, and the inner side of the chuck is connected to the supporting cylinder. A plurality of clamping blocks are slidably connected to the support cylinder along the circumferential interval, and a movable sleeve is slidably connected between the outer sides of the clamping blocks. The movable sleeve is located on the inner side of the supporting cylinder and also includes a fixed sleeve, a connecting block, a resisting block, a sliding ring, a clamping rod, a clamping sleeve and a fixing assembly. The movable sleeve is threadedly connected with the fixing sleeve, and the fixed sleeve is connected to the rotating shaft. The upper side of the drill body is connected with a connecting block, and the left side of the connecting block is symmetrically connected with the resisting block. The outer side of the chuck is slidably connected with the sliding ring, and a plurality of clamping rods are connected to the outer side of the sliding ring along the circumferential interval. The clamping rod is in contact with the resisting block. The inner side and the right side of the sliding ring are both connected with the clamping sleeve, and the clamping sleeve is slidably clamped with the chuck, and a fixing assembly is provided on the sliding ring.
[0009] Furthermore, the outer side surfaces of the clamping blocks are all provided with inclined surfaces, and the movable sleeves are slidably matched with the inclined surfaces.
[0010] Furthermore, the fixing assembly includes a clamping bead and an elastic member. A plurality of clamping beads are slidingly connected at circumferential intervals on the left side of the sliding ring. Elastic members are connected between the clamping beads and the inside of the sliding ring. A plurality of clamping grooves are circumferentially spaced on both sides of the outer wall of the chuck, and the clamping beads are clamped in cooperation with the clamping grooves.
[0011] Furthermore, it also includes a gear ring and a gear block. The gear ring is connected to the right side of the sliding ring, and a plurality of gear blocks are connected to the outer side of the rotating shaft at intervals along the circumferential direction. The gear ring is snap-fitted with the gear block.
[0012] Furthermore, it also includes a rotating block, a supporting member, a transmission member, an abutment block and a torsion spring. The left end of the connecting block is rotatably connected to the rotating block, two torsion springs are connected between the rotating block and the connecting block, the top of the rotating block is connected to the supporting member, the right side of the rotating block is symmetrically connected to the transmission member, the abutment block is slidably connected between the transmission members, and the abutment block is slidably connected to the connecting block.
[0013] Furthermore, the support member is in the shape of a semicircular ring.
[0014] Furthermore, a pulley is also included, and the right end of the abutment block is rotatably connected with the pulley at even intervals.
[0015] Furthermore, it also includes spring plates and auxiliary rollers. The left port in the chuck is symmetrically connected to the spring plates that are tilted inwards, and the inner sides of the spring plates are rotatably connected to auxiliary rollers for assisting the movement of the drill bit.
[0016] Compared with the prior art, the present invention has the following advantages: 1. The chuck can be effectively limited by the cooperation between the clamping rod and the stop block, so that the fixed sleeve drives the movable sleeve to move to automatically complete the tightening and loosening operation of the drill bit, eliminating the need for the user to manually hold the chuck to tighten the drill bit, improving the safety of use, realizing automatic operation, and simplifying the process of replacing the drill bit;
[0017] 2. The matching structure of the gear ring and the gear block is set, which can effectively fix the sliding ring and the chuck during normal use of the rechargeable drill, prevent the chuck from accidentally loosening, ensure stability during use, and further improve the safety of operation;
[0018] 3. When removing and installing the drill bit, the support is in an upright state, which can effectively hold the drill bit and facilitate the user to perform removal and installation operations. When the electric drill is in normal use, the support will automatically retract as the sliding ring moves, which does not affect normal use and ensures the overall compactness and portability of the equipment;
[0019] 4. The spring piece and auxiliary roller are set at the chuck port to guide and assist the movement of the drill bit, making it convenient for users to quickly plug in the drill bit for installation, simplifying the installation process of the drill bit, improving the accuracy and efficiency of installation, and reducing the possibility of operational errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0021] Figure 2 It is a partial cross-sectional view of the support cylinder, clamping block, sliding ring, etc. of the present invention.
[0022] Figure 3 It is a partial cross-sectional view of the chuck, support tube, chuck block, etc. of the present invention.
[0023] Figure 4 It is a three-dimensional structural schematic diagram of the support tube and the clamping block of the present invention.
[0024] Figure 5 It is a partial cross-sectional view of the clamping block, movable sleeve, fixed sleeve, etc. of the present invention.
[0025] Figure 6 It is an exploded view of the movable sleeve, fixed sleeve, support cylinder, etc. of the present invention.
[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping block and the inclined surface of the present invention.
[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the mobile sleeve of the present invention.
[0028] Fig. 9It is a schematic diagram of the three-dimensional structure of the connecting block, the abutment block, the sliding ring, etc. of the present invention.
[0029] Fig.10 It is a partial cross-sectional view of the card slot, card bead, elastic member, etc. of the present invention.
[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the gear ring, gear block, sliding ring, etc. of the present invention.
[0031] Fig.12 It is a partial cross-sectional view of the clamping sleeve, gear ring, sliding ring, etc. of the present invention.
[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the rotating block, supporting member, connecting block, etc. of the present invention.
[0033] Fig.14 It is a three-dimensional structural schematic diagram of the transmission member, abutment block, pulley, etc. of the present invention.
[0034] Fig.15 It is a three-dimensional structural schematic diagram of the transmission member, torsion spring, abutment block, etc. of the present invention.
[0035] Fig.16 It is a partial cross-sectional view of the spring piece, auxiliary roller, chuck, etc. of the present invention.
[0036] The markings of the components in the accompanying drawings are as follows: 1, drilling rig body, 2, rotating shaft, 201, chuck, 301, supporting cylinder, 302, clamping block, 3021, inclined plane, 303, movable sleeve, 304, fixed sleeve, 401, connecting block, 402, abutment block, 403, sliding ring, 404, clamping rod, 405, clamping groove, 406, clamping bead, 407, elastic member, 408, clamping sleeve, 501, rotating block, 502, supporting member, 503, transmission member, 504, abutment block, 505, pulley, 506, torsion spring, 601, spring sheet, 602, auxiliary roller, 701, gear ring, 702, gear block. DETAILED DESCRIPTION
[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] Embodiment 1: An electric rechargeable drill that is easy to replace the drill bit, such as Figure 1-Figure 10As shown, it includes a drilling rig body 1, a rotating shaft 2, a chuck 201, a supporting cylinder 301, a clamping block 302, a movable sleeve 303, a fixed sleeve 304, a connecting block 401, a stop block 402, a sliding ring 403, a clamping rod 404, a clamping sleeve 408 and a fixing assembly. The upper side of the drilling rig body 1 is rotatably connected with the rotating shaft 2, and the rotating shaft 2 is connected to the motor output shaft inside the drilling rig body 1. The chuck 201 is rotatably connected to the rotating shaft 2, and the inner side of the chuck 201 is connected to the supporting cylinder 301. A plurality of clamping blocks 302 are slidably connected to the inner side of the supporting cylinder 301 along the circumferential direction. The outer sides of the clamping blocks 302 are slidably connected with the movable sleeves 303. The movable sleeves 303 are located on the inner side of the supporting cylinder 301. The outer sides of the clamping blocks 302 are all provided with inclined surfaces 3021. The movable sleeves 303 are located on the inner side of the supporting cylinder 301. 3 is slidably matched with the inclined surface 3021, and the movable sleeve 303 is slidably connected with each clamping block 302, the movable sleeve 303 is threadedly connected with a fixed sleeve 304, the fixed sleeve 304 is connected to the rotating shaft 2, the upper side of the drilling rig body 1 is connected with a connecting block 401, and a stop block 402 is symmetrically welded on the left side of the connecting block 401, a sliding ring 403 is slidably connected to the outer side of the chuck 201, and a plurality of clamping rods 404 are connected to the outer side of the sliding ring 403 at intervals along the circumferential direction, the clamping rod 404 is in contact with the stop block 402, when the stop block 402 is against the clamping rod 404, the rotation of the rotating shaft 2 cannot drive the chuck 201 to rotate, the inner side and the right side of the sliding ring 403 are connected with a clamping sleeve 408, the clamping sleeve 408 is slidably clamped with the chuck 201, and a fixing component is provided on the sliding ring 403.
[0039] like Fig.10 As shown, the fixing assembly includes a clamping bead 406 and an elastic member 407. A plurality of clamping beads 406 are slidingly connected at circumferential intervals on the left side of the sliding ring 403. Elastic members 407 are connected between the clamping beads 406 and the inside of the sliding ring 403. A plurality of clamping grooves 405 are circumferentially spaced apart on the left and right sides of the outer wall of the chuck 201. The clamping beads 406 are clamped in cooperation with the clamping grooves 405 to fix the sliding ring 403.
[0040] When installing the drill bit, insert the drill bit into the chuck 201 so that the drill bit is located inside the clamp block 302. In the initial state, the clamping rod 404 is aligned with the stop block 402. The user operates the drill body 1 to start it. The output shaft of the motor inside the drill body 1 rotates to drive the rotating shaft 2 to rotate. Since the chuck 201 is not limited, the rotating shaft 2 can drive the chuck 201 to rotate. All the components inside the chuck 201 will rotate accordingly, and the clamping sleeve 408, the sliding ring 403 and the clamping rod 404 will also rotate synchronously. When the clamping rod 404 rotates to contact the stop block 402, the stop block 402 abuts against the clamping rod 404. The rotating shaft 2 continues to rotate and cannot drive the chuck 201 to rotate. The rotation of shaft 2 drives the fixed sleeve 304 to rotate, and the fixed sleeve 304 drives the movable sleeve 303 to move to the left side. The movable sleeve 303 moves along the inclined surface 3021, and then pushes the clamping block 302 to move inward, and the drill bit is clamped and fixed by the clamping block 302. After fixing, the drilling rig body 1 is controlled to stop driving the rotation of the rotating shaft 2. The movable sleeve 303 is threadedly connected with the fixed sleeve 304 to ensure that the movable sleeve 303 is not easily displaced. Then, the sliding ring 403 is slid to the right side, driving the clamping rod 404 and the clamping sleeve 408 to slide to the right side. The clamping bead 406 moves with it, and the clamping bead 406 will be squeezed out of the clamping groove 405 on the left side, and the elastic member 407 is compressed. When the chuck 406 is aligned with the right side slot 405, the elastic member 407 and the card bead 406 rebound and reset to be stuck in the right side slot 405 to fix the sliding ring 403, and the card rod 404 and the stop block 402 are out of alignment. At this time, the rechargeable drill can be used normally. After starting the rechargeable drill, the motor inside the drill body 1 drives the rotating shaft 2 to rotate, and then drives the chuck 201 to rotate, thereby driving the drill bit to rotate, and the drill bit can be used to complete the operation. If the drill bit needs to be removed for replacement, first turn off the rechargeable drill, and then push the sliding ring 403 to the left, drive the card rod 404, the card sleeve 408 and the card bead 406 to move to the left, so that the card bead 406 is aligned with the left side slot. 405 is engaged, and then the motor inside the drilling rig body 1 is controlled to operate in the reverse direction, driving the rotating shaft 2 to reverse, and the rotating shaft 2 drives the fixed sleeve 304, the movable sleeve 303 and the chuck 201 to reverse, and the other components on the chuck 201 will reverse accordingly. After the clamping rod 404 is abutted by the abutment block 402, the chuck 201 cannot rotate, and the rotating shaft 2 and the fixed sleeve 304 continue to rotate, and the fixed sleeve 304 drives the movable sleeve 303 to move to the right side, so that it no longer presses the clamping block 302, and drives the clamping blocks 302 to separate from each other. At this time, the drill bit is in a loose state, and the drill bit can be removed, the electric drill is turned off, and the drill bit can be replaced, so as to complete the rapid replacement of the drill bit.
[0041] Embodiment 2: Based on embodiment 1, Fig.11 and Fig.12As shown, it also includes a gear ring 701 and a gear block 702. The gear ring 701 is connected to the right side of the sliding ring 403. A plurality of gear blocks 702 are welded to the outer side of the rotating shaft 2 at intervals along the circumferential direction. The gear ring 701 and the gear block 702 are snap-fitted to fix the sliding ring 403 and the chuck 201.
[0042] After the drill bit is installed, when using the rechargeable drill, push the sliding ring 403 to the right, driving the clamping rod 404 to move and align with the stop block 402. The sliding ring 403 also drives the gear ring 701 to move to the right, so that the gear ring 701 and the gear block 702 are engaged. When using the electric drill, slight rotation of the sliding ring 403 and the chuck 201 can be avoided, thereby ensuring the stability of the chuck 201.
[0043] like Figure 1 and Figure 13-Figure 15 As shown, it also includes a rotating block 501, a support member 502, a transmission member 503, an abutment block 504, a pulley 505 and a torsion spring 506. The left end of the connecting block 401 is rotatably connected to the rotating block 501, and two torsion springs 506 are connected between the rotating block 501 and the connecting block 401. A support member 502 is welded on the top of the rotating block 501. The support member 502 is in a semicircular ring shape that fits the shape of the drill bit. Transmission members 503 are symmetrically welded to the front and back of the right side of the rotating block 501. Abutment blocks 504 are slidably connected between the transmission members 503. The abutment blocks 504 are slidably connected to the connecting block 401, and a plurality of pulleys 505 for assisting the rotation of the sliding ring 403 are rotatably connected to the right end of the abutment block 504 at even intervals.
[0044] When installing or removing the drill bit, the support member 502 remains in an upright state. When installing the drill bit, the drill bit is placed on the support member 502. The semicircular ring structure can fit the shape of the drill bit. The drill bit is pushed to the right along the support member 502 into the chuck 201, which is convenient for installing the drill bit. After installation, the sliding ring 403 is pushed to the right so that the clamping rod 404 is no longer aligned with the abutment block 402. Initially, the sliding ring 403 is against the pulley 505, and the torsion spring 506 is in a deformed state. When the sliding ring 403 moves to the right and no longer abuts the pulley 505, the torsion spring 506 rebounds and resets, driving the rotating block 501 and the support member 502 to rotate downward 180 degrees. The transmission member 503 rotates accordingly, thereby pushing the abutment block 504 and the pulley 505 to move to the right. The support member 502 no longer supports the drill bit, and the drill bit can be used normally. When removing the drill bit, slide the sliding ring 403 to the left to align the clamping rod 404 with the abutment block 402. The sliding ring 403 will contact the pulley 505, thereby pushing the pulley 505 and the abutment block 504 to move to the left. The abutment block 504 drives the transmission member 503 to reverse 180 degrees and reset, thereby driving the rotating block 501 and the support member 502 to reverse and stand up. The torsion spring 506 is deformed, and the support member 502 supports the drill bit again, which is convenient for supporting the drill bit for disassembly. When disassembling, first drive the chuck 201 and the sliding ring 403 to rotate through the rotating shaft 2. After the clamping rod 404 and the abutment block 402 are in contact and clamped, the clamping rod 404 can be clamped by the abutment block 402 to fix the chuck 201, so that the drill bit can be automatically loosened to complete the disassembly. When the sliding ring 403 rotates, the pulley 505 will rotate due to friction to prevent the abutment block 504 from being worn.
[0045] like Fig.16 As shown, it also includes a spring piece 601 and an auxiliary roller 602. The left port in the chuck 201 is symmetrically connected to the spring piece 601 that is tilted inward. The inner side of the spring piece 601 is rotatably connected to the auxiliary roller 602 for assisting the movement of the drill bit. When the drill bit is clamped into the chuck 201, the drill bit contacts the two auxiliary rollers 602. The spring piece 601 has elastic force, and the auxiliary roller 602 is close to the drill bit, which can position the drill bit and assist the drill bit to move and be clamped between the clamping blocks 302, thereby realizing rapid installation of the drill bit.
[0046] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. An electric charging drill for convenient drill bit replacement, comprising a drill body (1), a rotating shaft (2), a chuck (201), a support tube (301), a clamping block (302) and a movable sleeve (303), wherein the upper side of the drill body (1) is rotatably connected to the rotating shaft (2), the rotating shaft (2) is connected to the output shaft of the motor inside the drill body (1), the chuck (201) is rotatably connected to the rotating shaft (2), the inner side of the chuck (201) is connected to the support tube (301), a plurality of clamping blocks (302) are slidably connected to the support tube (301) at intervals along the circumference, the outer sides of the clamping blocks (302) are slidably connected to the movable sleeve (303), and the movable sleeve (303) is located on the inner side of the support tube (301), wherein: The drill rig also comprises a fixed sleeve (304), a connecting block (401), a stop block (402), a sliding ring (403), a clamping rod (404), a clamping sleeve (408) and a fixing assembly. The movable sleeve (303) is threadedly connected with the fixed sleeve (304), the fixed sleeve (304) is connected to the rotating shaft (2), the upper side of the drilling rig body (1) is connected with the connecting block (401), the left side of the connecting block (401) is symmetrically connected with the stop block (402), the outer side of the chuck (201) is slidably connected with the sliding ring (403), the outer side of the sliding ring (403) is connected with a plurality of clamping rods (404) at intervals along the circumferential direction, the clamping rod (404) is in contact with the stop block (402), the inner side and the right side of the sliding ring (403) are both connected with the clamping sleeve (408), the clamping sleeve (408) is slidably clamped with the chuck (201), and a fixing assembly is arranged on the sliding ring (403).
2. The electric rechargeable drill for easy drill bit replacement according to claim 1, characterized in that: The outer side surfaces of the clamping blocks (302) are all provided with inclined surfaces (3021), and the movable sleeve (303) is slidably matched with the inclined surfaces (3021).
3. The electric rechargeable drill for easy drill bit replacement according to claim 2, characterized in that: The fixing assembly comprises a clamping bead (406) and an elastic member (407); a plurality of clamping beads (406) are slidably connected at intervals along the circumferential direction on the left side of the sliding ring (403); the clamping beads (406) and the inside of the sliding ring (403) are both connected with the elastic member (407); a plurality of clamping grooves (405) are provided at intervals along the circumferential direction on both sides of the outer wall of the clamp (201); the clamping beads (406) are clamped and matched with the clamping grooves (405).
4. The electric rechargeable drill for easy drill bit replacement according to claim 3, characterized in that: It also includes a gear ring (701) and a gear block (702). The right side of the sliding ring (403) is connected to the gear ring (701). The outer side of the rotating shaft (2) is connected to a plurality of gear blocks (702) at intervals in the circumferential direction. The gear ring (701) and the gear block (702) are engaged with each other.
5. The electric rechargeable drill for easy drill bit replacement according to claim 4, characterized in that: The invention also comprises a rotating block (501), a supporting member (502), a transmission member (503), an abutting block (504) and a torsion spring (506); the left end of the connecting block (401) is rotatably connected to the rotating block (501); two torsion springs (506) are connected between the rotating block (501) and the connecting block (401); the top of the rotating block (501) is connected to the supporting member (502); the right side of the rotating block (501) is symmetrically connected to the transmission member (503); the abutting block (504) is slidably connected between the transmission members (503); and the abutting block (504) is slidably connected to the connecting block (401).
6. The electric rechargeable drill for easy drill bit replacement according to claim 5, characterized in that: The support member (502) is in the shape of a semicircular ring.
7. The electric rechargeable drill for easy drill bit replacement according to claim 6, characterized in that: It also includes a pulley (505), and the right end of the abutment block (504) is evenly and rotatably connected with a plurality of pulleys (505).
8. The electric rechargeable drill for easy drill bit replacement according to claim 7, characterized in that: It also includes a spring sheet (601) and an auxiliary roller (602). The left port in the chuck (201) is symmetrically connected to the spring sheet (601) which is tilted inwards. The inner side of the spring sheet (601) is rotatably connected to the auxiliary roller (602) for assisting the movement of the drill bit.