Output mechanism for electric drill

Abstract

The utility model discloses an output mechanism for an electric drill, which comprises a main machine shell, an output shaft rotationally connected with the main machine shell is arranged in the main machine shell, and a chuck component is fixedly mounted on the output shaft; the outer layer of the output shaft is sleeved with a first bearing, and the first bearing is connected with the output shaft in a tight fit mode. A cover plate is fixedly mounted at the opening end of the host shell, and the first bearing is attached to the cover plate; the chuck assembly comprises a clamping jaw shaft sleeve, and a first fastener for fixing the clamping jaw shaft sleeve and the output shaft is arranged between the clamping jaw shaft sleeve and the output shaft; the output shaft is provided with a plurality of evenly-distributed limiting protrusions, and the clamping jaw shaft sleeve is provided with limiting grooves matched with the limiting protrusions. The output shaft and the chuck assembly are fixed through the first fastening piece, and meanwhile the limiting groove and the limiting protrusion are connected in a matched mode, so that the chuck assembly is more convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric tool technical field, concretely relates to a kind of output mechanism for electric drill. BACKGROUND

[0002] Electric drill is a kind of commonly used electric tool, the electric drill of general existing including host computer, chuck is equipped on host computer, different outer diameter size drill bit can be installed in chuck. The patent text of the existing publication No.CN108436146A discloses a kind of high-stability impact electric drill of stable and reliable impact function regulation, including shell, operating handle, auxiliary handle, driving motor, gear reduction mechanism, impact device, impact function switch, output shaft and drill chuck, drill chuck is installed in the front end of output shaft. The chuck of existing impact electric drill is connected between output shaft by thread, then it is tightened by screw, after chuck and output shaft are connected by thread, the connection of two is too close, it is not convenient for subsequent disassembly and assembly. Therefore, it is necessary to design a kind of output mechanism for electric drill to overcome the above difficulties. SUMMARY

[0003] The utility model discloses in view of prior art existing problem, design a kind of output mechanism for electric drill, the utility model output shaft and chuck component are fixed by first fastener, simultaneously by limit recess and limit protrusion pairing connection, chuck component disassembly is more convenient.

[0004] The utility model discloses a kind of output mechanism for electric drill, pack machine host computer shell, the output shaft is arranged in the host computer shell, and the output shaft is rotatably connected with the host computer shell, and the chuck component is fixedly installed on the output shaft;The first bearing is installed on the outer layer of the output shaft, and the first bearing is tightly connected with the output shaft;The cover plate is fixedly installed on the opening end of the host computer shell, and the first bearing is attached with the cover plate;The chuck component includes claw sleeve, and the first fastener for fixing the claw sleeve and the output shaft is arranged between the claw sleeve and the output shaft;The output shaft is equipped with the limit protrusion of several even distribution, and the limit recess that is paired with the limit protrusion is arranged on the claw sleeve.

[0005] As preferred, the chuck component further includes chuck body and several chuck jaw bodies arranged in the claw sleeve;The claw sleeve is arranged in the chuck body, and the claw sleeve can rotate relative to the chuck body;The claw sleeve is equipped with the chuck jaw body of several even distribution, and each chuck jaw body can be close to each other or away from each other.

[0006] As preferred, the first fastener for fixing the claw sleeve and the output shaft is arranged between the claw sleeve and the output shaft;The first fastener is screw, and the mounting hole is arranged in the claw sleeve, and the first fastener passes through the mounting hole and extends to be installed in the output shaft.

[0007] As preferred, the output shaft is provided with symmetrically arranged limiting protrusions, and the jaw sleeve is provided with symmetrically arranged limiting grooves; the limiting protrusions and the limiting grooves are mutually matched in profile contour, and the limiting protrusions are arranged in the limiting grooves when the chuck assembly is mounted on the output shaft.

[0008] When the chuck assembly is mounted, the jaw bodies are first separated from each other to provide space for the first fastener; then the jaw sleeve is mounted on the output shaft, and the limiting protrusions and the limiting grooves are arranged in alignment; and then the jaw sleeve and the output shaft are connected by the first fastener, so that the chuck assembly is mounted by the first fastener, which is convenient for disassembly and use.

[0009] As preferred, the output shaft and the main machine shell are further provided with a second bearing, and the output shaft is rotatably connected to the main machine shell through the first bearing and the second bearing.

[0010] As preferred, the first bearing and the main machine shell are further provided with a fixing member, the fixing member is sleeved and mounted on the outer layer of the first bearing, and the fixing member is arranged in abutment with the inner wall of the main machine shell.

[0011] As preferred, the opening end of the main machine shell is fixedly mounted with a cover plate, a plurality of second fasteners for fixing the cover plate and the main machine shell are arranged between the cover plate and the main machine shell, the second fasteners are screws, the cover plate is provided with a first recess, the edge of the first recess is provided with a first protrusion, the first bearing is abutted and mounted in the first recess, and the end face of the fixing member is abutted and mounted on the first protrusion.

[0012] As preferred, the outer ring of the fixing member is provided with a plurality of second protrusions, the main machine shell is provided with a plurality of second grooves for cooperatively mounting the second protrusions; each second protrusion is arranged in each second groove, and the profile contour of the second protrusion and the profile contour of the second groove are mutually matched.

[0013] As preferred, the main machine shell is provided with a first step, the second bearing is arranged on the first step, and the end face of the second bearing is arranged in abutment with the end face of the first step.

[0014] As preferred, the output shaft is provided with a detachably mounted retaining ring, and the retaining ring is arranged in abutment with the second bearing.

[0015] The first bearing is arranged to limit the output shaft in the radial direction, and the first bearing is fixed by the fixing member; the second protrusion on the fixing member and the second groove on the main shell are matched with each other, so that the fixing member is more firmly installed; the fixing member and the first bearing are axially limited by the cover plate, and the first bearing is tightly connected with the output shaft; the second bearing is limited by the first step, and the output shaft is further limited by the check ring, so that the output shaft is prevented from being separated from the main shell.

[0016] Compared with the prior art, the utility model has the advantages that: 1, through first fastener connection chuck assembly and output shaft, both dismounting is more convenient, will not jam dead; 2, through the cooperation of the limiting protrusion and the limiting groove, the jaw sleeve is prevented from rotating relative to the output shaft; 3, by setting cover plate and fixing member, the output shaft is axially limited, and the output shaft is prevented from separating from the main shell. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the internal structure diagram of the utility model;

[0019] Figure 3 It is the explosion view of the utility model;

[0020] Figure 4 It is the perspective view of the output shaft;

[0021] Figure 5 It is the perspective view of the chuck assembly;

[0022] Figure 6 It is the perspective view of the cover plate;

[0023] Figure 7 It is the perspective view of the main shell;

[0024] Marked in the figure: 1, main shell; 2, output shaft; 3, chuck assembly; 31, jaw sleeve; 32, chuck body; 33, jaw body; 34, mounting hole; 4, first bearing; 5, cover plate; 6, first fastener; 7, limiting protrusion; 8, limiting groove; 9, second bearing; 10, fixing member; 11, second fastener; 12, first groove; 13, first protrusion; 14, second protrusion; 15, second groove; 16, first step; 17, check ring. DETAILED DESCRIPTION

[0025] The utility model will be further described in connection with the embodiment shown in the attached drawings:

[0026] As Figures 1 to 7As shown, the embodiment discloses an output mechanism for electric drill, including main machine shell 1, the main machine shell 1 is provided with the output shaft 2 that is rotatably connected with it, the chuck assembly 3 is fixedly installed on the output shaft 2;The first bearing 4 is installed on the outer layer of the output shaft 2, and the first bearing 4 is tightly connected with the output shaft 2;The opening end of the main machine shell 1 is fixedly installed with the cover plate 5, and the first bearing 4 is attached with the cover plate 5;The chuck assembly 3 includes jaw sleeve 31, and the first fastener 6 for fixing the jaw sleeve 31 and the output shaft 2 is arranged between the jaw sleeve 31 and the output shaft 2;The output shaft 2 is provided with a plurality of uniformly distributed limiting protrusions 7, and the jaw sleeve 31 is provided with a limiting groove 8 matched with the limiting protrusion 7.

[0027] The chuck assembly 3 further includes chuck body 32 and a plurality of jaw bodies 33 arranged in the jaw sleeve 31;The jaw sleeve 31 is arranged in the chuck body 32, and the jaw sleeve 31 can rotate relative to the chuck body 32;The jaw sleeve 31 is provided with a plurality of uniformly distributed jaw bodies 33, and each jaw body 33 can approach or move away from each other;The first fastener 6 for fixing the jaw sleeve 31 and the output shaft 2 is arranged between the jaw sleeve 31 and the output shaft 2;The first fastener 10 is a screw, the mounting hole 34 is arranged in the jaw sleeve 31, and the first fastener 10 extends into the output shaft 2 through the mounting hole 34;The output shaft 2 is provided with symmetrically arranged limiting protrusions 7, and the jaw sleeve 31 is provided with symmetrically arranged limiting grooves 8;The shape profile of the limiting protrusion 7 and the shape profile of the limiting groove 8 are matched with each other, and the limiting protrusion 7 is arranged in the limiting groove 8 when the chuck assembly 3 is installed on the output shaft 2.

[0028] The output shaft 2 is further provided with a second bearing 9 between the main housing 1, and the output shaft 2 is rotatably connected to the main housing 1 through the first bearing 4 and the second bearing 9. The first bearing 4 is further provided with a fixing piece 10 between the main housing 1, the fixing piece 10 is sleeved and installed on the outer layer of the first bearing 4, and the fixing piece 10 is attached to the inner wall of the main housing 1. The opening end of the main housing 1 is fixedly installed with a cover plate 5, a plurality of second fasteners 11 for fixing the cover plate 5 and the main housing 1 are arranged between the cover plate 5 and the main housing 1, and the second fasteners 11 are screws; the cover plate 5 is internally provided with a first groove 12, and the edge of the first groove 12 is provided with a first protrusion 13; the first bearing 4 is attached and installed in the first groove 12, and the end face of the fixing piece 10 is attached and installed on the first protrusion 13. The outer ring of the fixing piece 10 is provided with a plurality of second protrusions 14, and the main housing 1 is provided with a plurality of second grooves 15 for cooperatively installing the second protrusions 14; each second protrusion 14 is arranged in each second groove 15, and the contour of the second protrusion 14 and the contour of the second groove 15 are adapted to each other. The main housing 1 is internally provided with a first step 16, the second bearing 9 is arranged on the first step 16, and the end face of the second bearing 9 is attached to the end face of the first step 16. The output shaft 2 is provided with a detachable retaining ring 17, and the retaining ring 17 is attached to the second bearing 9.

[0029] The specific operation process of the embodiment is as follows: when installing the chuck assembly 3, first separate the jaw bodies 33 from each other to give the first fastener 6 room; then install the jaw sleeve 31 on the output shaft 2, and align the limiting protrusion 7 and the limiting groove 8; then connect the jaw sleeve 31 and the output shaft 2 through the first fastener 6, so that the chuck assembly is installed through the first fastener 6, which is convenient to disassemble and use. When installing the output shaft 2, first install the first bearing 4 on the output shaft 2, and install the second bearing 9 and the fixing piece 10 on the main housing 1; then sleeve the cover plate 5 on the output shaft 2, and then install the output shaft 2 on the second bearing 9; finally, fix the cover plate 5 through the second fastener 11, so that the output shaft 2 can be stably installed on the main housing 1.

[0030] The specific embodiments described in the specification are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. An output mechanism for an electric drill, comprising a main housing (1), an output shaft (2) being rotatably connected with the main housing (1), characterized in that, The output shaft (2) is fixedly installed with a chuck assembly (3); the outer layer of the output shaft (2) is sleeved with a first bearing (4), and the first bearing (4) is tightly connected with the output shaft (2); the opening end of the main machine shell (1) is fixedly installed with a cover plate (5), and the first bearing (4) is arranged in close contact with the cover plate (5); the chuck assembly (3) comprises a jaw sleeve (31), and a first fastener (6) for fixing the jaw sleeve (31) and the output shaft (2) is arranged between the jaw sleeve (31) and the output shaft (2); a plurality of limiting protrusions (7) are arranged on the output shaft (2) and uniformly distributed, and a limiting groove (8) matched with the limiting protrusions (7) is arranged on the jaw sleeve (31).

2. An output mechanism for an electric drill according to claim 1, characterized in that, The chuck assembly (3) further comprises a chuck body (32) and a plurality of jaw bodies (33) arranged in the jaw sleeve (31); the jaw sleeve (31) is arranged in the chuck body (32), and the jaw sleeve (31) can rotate relative to the chuck body (32); a plurality of jaw bodies (33) are arranged in the jaw sleeve (31) and uniformly distributed, and each jaw body (33) can approach or move away from each other.

3. An output mechanism for an electric drill according to claim 2, characterized in that, The first fastener (6) for fixing the jaw sleeve (31) and the output shaft (2) is arranged between the jaw sleeve (31) and the output shaft (2); the first fastener (10) is a screw, the jaw sleeve (31) is provided with a mounting hole (34), and the first fastener (10) passes through the mounting hole (34) and extends into the output shaft (2).

4. An output mechanism for an electric drill according to claim 2, characterized in that, The output shaft (2) is provided with symmetrically arranged limiting protrusions (7), and the jaw sleeve (31) is provided with symmetrically arranged limiting grooves (8); the contour of the limiting protrusions (7) and the contour of the limiting grooves (8) are matched with each other, and when the chuck assembly (3) is installed on the output shaft (2), the limiting protrusions (7) are arranged in the limiting grooves (8).

5. An output mechanism for an electric drill according to claim 1, characterized in that, The output shaft (2) and the main machine shell (1) are further provided with a second bearing (9), and the output shaft (2) is rotatably connected with the main machine shell (1) through the first bearing (4) and the second bearing (9).

6. An output mechanism for an electric drill according to claim 5, characterized in that, The first bearing (4) and the main machine shell (1) are further provided with a fixing member (10), the fixing member (10) is sleeved and installed on the outer layer of the first bearing (4), and the fixing member (10) is arranged in close contact with the inner wall of the main machine shell (1).

7. An output mechanism for an electric drill according to claim 6, characterized in that, The opening end of the main machine shell (1) is fixedly installed with a cover plate (5), a plurality of second fasteners (11) for fixing the cover plate (5) and the main machine shell (1) are arranged between the cover plate (5) and the main machine shell (1), the second fasteners (11) are screws; the cover plate (5) is provided with a first groove (12), and the edge of the first groove (12) is provided with a first protrusion (13); the first bearing (4) is arranged in close contact in the first groove (12), and the end face of the fixing member (10) is arranged in close contact on the first protrusion (13).

8. An output mechanism for an electric drill according to claim 7, characterized in that, The outer ring of the fixing part (10) is provided with a plurality of second protrusions (14), and the main machine shell (1) is provided with a plurality of second grooves (15) for matching and installing the second protrusions (14); each second protrusion (14) is arranged in each second groove (15), and the outer shape contour of the second protrusion (14) and the outer shape contour of the second groove (15) are matched with each other.

9. An output mechanism for an electric drill according to claim 5, characterized in that, The main machine shell (1) is provided with a first step (16), and the first step (16) is provided with a second bearing (9), and the end face of the second bearing (9) is arranged in close contact with the end face of the first step (16).

10. An output mechanism for an electric drill according to claim 5, characterized in that, The output shaft (2) is provided with a detachable retaining ring (17), and the retaining ring (17) is arranged in close contact with the second bearing (9).

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