Handheld electric drill chuck

Abstract

The utility model relates to the technical field of electric drill chucks, in particular to a handheld electric drill chuck which comprises a fixing cover, a guiding conical head is fixedly connected to the center of the top of the inner wall of the fixing cover, a plurality of guiding grooves are formed in the conical surface of the guiding conical head, and a dismounting rotating part is rotationally connected to the bottom of the fixing cover. And an annular fluted disc is fixedly connected to the outer wall of the disassembly and assembly rotating part. Compared with the prior art, the dismounting device has the advantages that the clamping head clamps the limiting teeth through pushing of the compression spring, so that rotation of the annular fluted disc and the dismounting rotating part is limited, the dismounting rotating part synchronously rotates along with rotation of the fixed cover, loosening caused by rotation inertia can be greatly reduced, stability is improved, and the dismounting device is suitable for being used for dismounting and mounting of the motor. According to the clamping device, loosening after long-time use is prevented, the clamping stability is improved, the pull handle is rotated after the push rod is pulled up, the pull handle is clamped into the clamping groove, the clamping head can be pulled up to be fixed, disassembly is facilitated, and the clamping head does not need to be pulled all the time in the disassembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drill chucks, in particular to a handheld electric drill chuck. Background Art

[0002] At present, the hand drill chuck basically drives the clamping body with threaded teeth to gather and loosen through the tapered threaded ring to clamp the drill bit. However, the threaded ring body of the current hand-held electric drill chuck relies on the self-locking property of the thread to achieve fixation. However, after long-term use, the thread gap becomes larger and is prone to loosening. In particular, the rotational inertia during use will cause the threaded ring to loosen, which will cause the clamping body to loosen, resulting in a reduction in the clamping force of the drill bit, and the drill bit is prone to slipping. Utility Model Content

[0003] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0004] Therefore, one purpose of the utility model is to provide a handheld electric drill chuck to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a hand-held electric drill chuck, including a fixed cover, a guide conical head is fixedly connected to the center of the top of the inner wall of the fixed cover, a plurality of guide grooves are provided on the conical surface of the guide conical head, a disassembly and assembly rotating part is rotatably connected to the bottom of the fixed cover, an annular gear disk is fixedly connected to the outer wall of the disassembly and assembly rotating part, a plurality of limit teeth distributed radially in an annular shape are fixedly connected to the two side surfaces of the annular gear disk, a plurality of inner walls of the guide grooves are slidably connected to clamping assemblies, the clamping assembly includes a transmission part and a clamping part, the clamping part is fixedly connected to the bottom of the transmission part, an inner wall of the disassembly and assembly rotating part is provided with an inner conical thread, and the transmission part is away from the guide groove. One side of the push rod is slidably connected to the bottom of the inner conical thread thread transmission, the center of the bottom of the disassembly and assembly rotating part is fixedly connected to the limiting part, and several clamping parts pass through the inner wall of the limiting part to the outside of the limiting part, and one side of the outer wall of the fixed cover is fixedly connected to the limiting component, and the limiting component includes a guide rail, the bottom of the inner wall of the guide rail is slidably connected with a push rod, and the bottom of the push rod is rotatably connected with a clamping head, and the clamping head is meshed and clamped with several limiting teeth on one side of the annular gear disk, and a clamping spring is sleeved on one side of the outer wall of the push rod close to the clamping head, and the compression spring is located between the clamping head and the bottom of the guide rail. The clamping head clamps several limiting teeth under the push of the compression spring, and one side of the clamping head is slidably connected to the outer wall of the fixed cover.

[0006] Preferably, any of the above schemes is that the plurality of clamping assemblies are distributed in a radial annular array around the center of the guide conical head, a plurality of anti-slip grooves are provided on one side of the clamping portion, and the plurality of anti-slip grooves on the surfaces of the plurality of clamping portions are all facing the center of the guide conical head.

[0007] The technical effect achieved by adopting the above scheme is: through the threaded transmission, several clamping components are driven to slide obliquely downward or upward. When sliding downward, several clamping parts converge toward the center to clamp the drill bit, so that the anti-slip groove clamps the drill bit evenly from all sides of the drill bit, thereby improving the fastening stability.

[0008] Preferably, any of the above schemes is that a handle is fixedly connected to the top of the push rod, and the push rod and the handle are perpendicular to each other.

[0009] The technical effect achieved by adopting the above solution is that the push rod can be easily pulled up by the handle so as to pull up the clamping head.

[0010] Preferably, any of the above schemes has a vertical guide groove in the middle of one side of the guide rail, a clamping groove is provided at the top of a side of the guide rail adjacent to the vertical guide groove, the clamping groove and the vertical guide groove are perpendicular to each other, and the clamping groove is connected to the top of the vertical guide groove.

[0011] The technical effect achieved by adopting the above solution is that the handle can slide to the position of the slot through the vertical guide groove and be locked into the slot by rotation.

[0012] Preferably, any of the above schemes is that the push rod is slidably connected to the inner wall of the guide groove, the length of the push rod is matched with the length of the inner wall of the guide groove, and the push rod can be pushed into the interior of the slot by rotating.

[0013] The technical effect achieved by adopting the above scheme is that the handle is inserted into the inside of the card slot, so that the card head can be pulled up and fixed in a position for easy disassembly, and the card head does not need to be pulled all the time during disassembly.

[0014] Preferably, any one of the above schemes has a wrench hole on one side of the limiting portion.

[0015] The technical effect achieved by adopting the above scheme is: the gear of the wrench is meshed with the annular toothed disc, and the annular toothed disc can be twisted by positioning and rotating the wrench through the wrench hole to realize the disassembly and assembly operation.

[0016] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0017] 1. The handheld electric drill chuck clamps a plurality of limit teeth through the push of the compression spring, thereby limiting the rotation of the annular gear disk and the disassembly and assembly rotating part, so that the disassembly and assembly rotating part rotates synchronously with the rotation of the fixed cover, which can greatly reduce the looseness caused by the inertia of rotation, improve stability, prevent looseness after long-term use, and improve the stability of clamping.

[0018] 2. The handheld electric drill chuck can be pulled up and fixed in position by pulling up the push rod and then rotating the handle so that the handle is inserted into the inside of the card slot, so that the card head does not need to be pulled all the time during disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a side view structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0022] In the figure: 1-fixed cover, 2-limiting teeth, 3-annular gear disc, 4-limiting part, 5-clamping assembly, 51-transmission part, 52-clamping part, 6-guide rail, 7-vertical guide groove, 8-push rod, 9-clamping head, 10-handle, 11-compression spring, 12-wrench hole, 13-clamping groove, 14-guide cone head, 15-guide groove, 16-inner cone thread. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0024] Embodiment 1: Figures 1 to 3As shown, a handheld electric drill chuck comprises a fixed cover 1, a guide cone head 14 is fixedly connected at the center of the top of the inner wall of the fixed cover 1, a plurality of guide grooves 15 are provided on the conical surface of the guide cone head 14, a disassembly and assembly rotating part is rotatably connected to the bottom of the fixed cover 1, an annular gear plate 3 is fixedly connected to the outer wall of the disassembly and assembly rotating part, a plurality of radially annularly distributed limiting teeth 2 are fixedly connected to the two side surfaces of the annular gear plate 3, a plurality of guide grooves 15 are slidably connected to the inner walls of the plurality of guide grooves 15, the clamping assembly 5 comprises a transmission part 51 and a clamping part 52, the clamping part 52 is fixedly connected to the bottom of the transmission part 51, an inner wall of the disassembly and assembly rotating part is provided with an inner conical thread 16, and a side of the transmission part 51 away from the guide groove 15 is connected to the inner conical thread 16 threaded transmission connection, the center of the bottom of the disassembly and assembly rotating part is fixedly connected to the limiting part 4, and a plurality of clamping parts 52 pass through the inner wall of the limiting part 4 to the outside of the limiting part 4. One side of the outer wall of the fixed cover 1 is fixedly connected to the limiting component, and the limiting component includes a guide rail 6, and the bottom of the inner wall of the guide rail 6 is slidably connected with a push rod 8, and the bottom of the push rod 8 is rotatably connected with a clamping head 9, which is engaged and clamped with a plurality of limiting teeth 2 on one side of the annular gear disk 3. A compression spring 11 is sleeved on one side of the outer wall of the push rod 8 close to the clamping head 9, and the compression spring 11 is located between the clamping head 9 and the bottom of the guide rail 6. The clamping head 9 clamps a plurality of limiting teeth 2 under the push of the compression spring 11, and one side of the clamping head 9 is slidably connected to the outer wall of the fixed cover 1.

[0025] As an optional technical solution of the utility model, a plurality of clamping components 5 are distributed in a radial annular array around the center of the guide cone head 14, and a plurality of anti-slip grooves are provided on one side of the clamping portion 52. The plurality of anti-slip grooves on the surfaces of the plurality of clamping portions 52 are all facing the center of the guide cone head 14. The plurality of clamping components 5 are driven to slide obliquely downward or upward through threaded transmission. When sliding downward, the plurality of clamping portions 52 converge toward the center to clamp the drill bit, so that the anti-slip grooves clamp the drill bit evenly from all sides of the drill bit, thereby improving the fastening stability.

[0026] As an optional technical solution of the utility model, a handle 10 is fixedly connected to the top of the push rod 8, and the push rod 8 and the handle 10 are perpendicular to each other. The push rod 8 can be easily pulled up by the handle 10 so as to pull up the clamping head 9.

[0027] As an optional technical solution of the utility model, a vertical guide groove 7 is opened in the middle of one side of the guide rail 6, and a card slot 13 is opened at the top of the side of the guide rail 6 adjacent to the vertical guide groove 7. The card slot 13 and the vertical guide groove 7 are perpendicular to each other, and the card slot 13 is connected with the top of the vertical guide groove 7, so that the handle 10 can slide to the position of the card slot 13 through the vertical guide groove 7 and be inserted into the card slot 13 by rotation.

[0028] As an optional technical solution of the present invention, the push rod 8 is slidably connected to the inner wall of the guide groove 7, and the length of the push rod 8 is adapted to the length of the inner wall of the guide groove 7. The push rod 8 can be pushed into the interior of the slot 13 by rotating. By pulling up the push rod 8 and then rotating the handle 10, the handle 10 is clamped into the interior of the slot 13, and the clamping head 9 can be pulled up and fixed in position for easy disassembly, and the clamping head 9 does not need to be pulled all the time during disassembly.

[0029] As an optional technical solution of the utility model, a wrench hole 12 is opened on one side of the limiting portion 4, and a chuck disassembly wrench can be inserted through the wrench hole 12 to make the gear of the wrench engage with the annular gear plate 3. The annular gear plate 3 can be twisted by positioning and rotating the wrench through the wrench hole 12 to realize the disassembly and assembly operation.

[0030] A handheld electric drill chuck, the working principle is as follows:

[0031] 1) Rotating the disassembly rotating part can drive the plurality of clamping components 5 to slide obliquely downward or upward through thread transmission;

[0032] 2) When sliding downward, the plurality of clamping parts 52 converge toward the center to clamp the drill bit, and when sliding upward, the plurality of clamping parts 52 are driven to disperse to the surroundings to loosen the drill bit;

[0033] 3) The clamping head 9 clamps a plurality of limiting teeth 2 by the push of the compression spring 11, thereby limiting the rotation of the annular gear plate 3 and the disassembly and assembly rotating part, so that the disassembly and assembly rotating part rotates synchronously with the rotation of the fixed cover 1, which can greatly reduce the looseness caused by the inertia of the rotation;

[0034] 4) By pulling up the push rod 8 and rotating the handle 10, the handle 10 is inserted into the slot 13, so that the clamping head 9 can be pulled up and fixed in position for easy disassembly, and the clamping head 9 does not need to be pulled all the time during disassembly.

[0035] To sum up, the handheld electric drill chuck, through the push of the clamping spring 11, makes the clamping head 9 clamp a number of limit teeth 2, thereby limiting the rotation of the annular gear plate 3 and the disassembly and assembly rotating part, so that the disassembly and assembly rotating part rotates synchronously with the rotation of the fixed cover 1, which can greatly reduce the loosening caused by the inertia of rotation, improve stability, prevent loosening after long-term use, and improve the clamping stability. By pulling up the push rod 8 and then rotating the handle 10, the handle 10 is clamped into the inside of the clamping groove 13, the clamping head 9 can be pulled up and fixed in position for easy disassembly, and there is no need to pull the clamping head 9 all the time during disassembly.

[0036] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld electric drill chuck, characterized in that: The invention comprises a fixed cover (1), wherein a guide conical head (14) is fixedly connected at the center of the top of the inner wall of the fixed cover (1), and a plurality of guide grooves (15) are provided on the conical surface of the guide conical head (14); a disassembly and assembly rotating part is rotatably connected to the bottom of the fixed cover (1); an annular gear disk (3) is fixedly connected to the outer wall of the disassembly and assembly rotating part; both side surfaces of the annular gear disk (3) are fixedly connected to a plurality of limit teeth (2) distributed in a radial annular shape; the inner walls of the plurality of guide grooves (15) are slidably connected to clamping assemblies (5); the clamping assembly (5) comprises a transmission part (51) and a clamping part (52); the clamping part (52) is fixedly connected to the bottom of the transmission part (51); an inner conical thread (16) is provided on the inner wall of the disassembly and assembly rotating part; a side of the transmission part (51) away from the guide groove (15) is threadedly connected to the inner conical thread (16); A limiting portion (4) is fixedly connected at the center of the bottom of the disassembly and assembly rotating portion, and a plurality of the clamping portions (52) pass through the inner wall of the limiting portion (4) to the outside of the limiting portion (4). A side of the outer wall of the fixed cover (1) is fixedly connected to a limiting component, and the limiting component includes a guide rail (6). A push rod (8) is slidably connected to the bottom of the inner wall of the guide rail (6). A clamping head (9) is rotatably connected to the bottom of the push rod (8). The clamping head (9) is meshed and clamped with a plurality of limiting teeth (2) on one side of the annular gear disk (3). A compression spring (11) is sleeved on a side of the outer wall of the push rod (8) close to the clamping head (9). The compression spring (11) is located between the clamping head (9) and the bottom of the guide rail (6). The clamping head (9) clamps a plurality of limiting teeth (2) under the push of the compression spring (11). One side of the clamping head (9) is slidably connected to the outer wall of the fixed cover (1).

2. A handheld electric drill chuck according to claim 1, characterized in that: The plurality of clamping assemblies (5) are distributed in a radial annular array around the center of the guide conical head (14); a plurality of anti-slip grooves are provided on one side of the clamping portion (52); and the plurality of anti-slip grooves on the surfaces of the plurality of clamping portions (52) are all oriented toward the center of the guide conical head (14).

3. A handheld electric drill chuck according to claim 2, characterized in that: A handle (10) is fixedly connected to the top of the push rod (8), and the push rod (8) and the handle (10) are perpendicular to each other.

4. A handheld electric drill chuck according to claim 3, characterized in that: A vertical guide groove (7) is provided in the middle of one side of the guide rail (6), a clamping groove (13) is provided at the top of a side of the guide rail (6) adjacent to the vertical guide groove (7), the clamping groove (13) and the vertical guide groove (7) are perpendicular to each other, and the clamping groove (13) is connected to the top of the vertical guide groove (7).

5. A handheld electric drill chuck according to claim 4, characterized in that: The push rod (8) is slidably connected to the inner wall of the guide groove (7), the length of the push rod (8) is matched with the length of the inner wall of the guide groove (7), and the push rod (8) can be pushed into the interior of the clamping groove (13) by rotating.

6. A handheld electric drill chuck according to claim 5, characterized in that: A wrench hole (12) is provided on one side of the limiting portion (4).

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