CN217912975U

CN217912975U - Electric drill with automatic elastic drill chuck

Info

Publication number: CN217912975U
Application number: CN202221860093.1U
Authority: CN
Inventors: 李东红; 杨旸
Original assignee: Changzhou Toolon Electric Works Co ltd
Current assignee: Changzhou Toolon Electric Works Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-29
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses an electric drill with automatic elasticity formula drill chuck belongs to the electric drill field, including casing, motor, the main shaft of being connected with motor drive and the drill chuck that is connected with the main shaft, still include: a secondary shaft and a switch knob parallel to the primary shaft; the switch knob is arranged on the shell; the right end of the auxiliary shaft is provided with a first gear, the left end of the drill chuck is provided with internal teeth, and the first gear is meshed with the internal teeth and drives the drill chuck to clamp or loosen; the auxiliary shaft is also provided with a second gear, the second gear is positioned between the first gear and the blocking piece, the main shaft is provided with a third gear, the auxiliary shaft is moved left and right along the axial direction through the switch knob, and the third gear and the second gear are in a meshed state or a separated state; the drill chuck is driven by the motor to clamp or loosen, so that the drill chuck is automatically loosened or loosened without being manually loosened by a user, and the drill chuck is convenient for the user to use.

Description

Electric drill with automatic elastic drill chuck

Technical Field

The utility model belongs to the electric drill field, especially, an electric drill with automatic elasticity formula drill chuck.

Background

Among the prior art, the drill chuck of electric drill is the hand drill chuck, is equipped with in the hand drill chuck and bores the body, clamping jaw, nut, swivel sleeve, thereby drives the nut through manual rotation swivel sleeve and rotates and drive the clamping jaw and move forward or backward and make the drill chuck press from both sides tightly or loosen the drilling tool, and it directly adopts the hand to rotate the rotatory overcoat of drill chuck and carries out the operation of unscrewing or screwing up, and this kind of elasticity mode is consuming time power, and the user of not being convenient for uses, consequently need design an electric drill that can the drill chuck of automatic elasticity.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model provides an electric drill with automatic elasticity formula drill chuck to solve the problem that the background art relates.

The utility model provides an electric drill with automatic elasticity formula drill chuck, including casing, motor, the main shaft of being connected with motor drive and the drill chuck that is connected with the main shaft, still include: a secondary shaft and a switch knob parallel to the primary shaft; the switch knob is arranged on the shell; the right end of the auxiliary shaft is provided with a first gear, the left end of the drill chuck is provided with internal teeth, and the first gear is meshed with the internal teeth and drives the drill chuck to clamp or loosen; the auxiliary shaft is further provided with a second gear, the second gear is located between the first gear and the blocking piece, the main shaft is provided with a third gear, the auxiliary shaft is moved left and right along the axial direction through the switch knob, and the third gear and the second gear are in a meshed state or a separated state.

Preferably or optionally, the auxiliary shaft is further provided with a first bearing, and the first bearing is positioned between the second gear and the baffle plate.

Preferably or optionally, the bottom of the switch knob is provided with a limit column which is eccentrically distributed, and the limit column is always positioned on the left side of the blocking piece; the switch knob rotates around the central axis of the switch knob; an elastic piece is further arranged between the first bearing and the blocking piece.

Preferably or optionally, the drill chuck comprises: the rotary sleeve is provided with a drill body, a nut and a clamping jaw; the left end and the right end of the drill body are respectively provided with a connecting hole and a clamping jaw hole; the connecting hole is connected with the main shaft; the clamping jaw hole is used for mounting the clamping jaw; the nut is sleeved on the drill body and is in threaded connection with the clamping jaw, and the nut drives the clamping jaw to move forwards and backwards.

Preferably or optionally, the jaw holes are provided with three and are arranged obliquely, and the jaw holes are uniformly arranged around the central axis of the drill body; the clamping jaws are three in number, and the clamping jaw holes correspond to the clamping jaws one to one.

Preferably or optionally, a plurality of clamping grooves are formed in the outer ring of the nut, a plurality of protrusions are formed in the inner ring of the rotary sleeve, and the clamping grooves are matched with the protrusions.

Having adopted above-mentioned technical scheme, for prior art, the utility model discloses following beneficial effect has:

(1) The utility model discloses the third gear that loops through the main shaft, the second gear of countershaft, the first gear of countershaft, the rotatory cover of internal tooth drive drill chuck rotatory, and the drive drill chuck presss from both sides tightly or loosens, need not the manual elasticity drill chuck of user, and the user of being convenient for uses.

(2) The utility model discloses a primary shaft is used for stabilizing the countershaft, avoids the countershaft to rock.

(3) The utility model discloses a switch knob just can adjust the countershaft through the rotation of self and advance and retreat for first gear on the countershaft can mesh with the internal tooth mutually, easy operation.

(4) The clamping jaws of the utility model are three, and the clamping jaw holes are in one-to-one correspondence with the clamping jaws; the screw is in threaded connection with the clamping jaws and can drive the three clamping jaws to advance and retreat simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the drill chuck of the present invention.

Fig. 3 is a schematic structural view of the auxiliary shaft and the internal teeth of the present invention.

Fig. 4 is a schematic view of the structure of the auxiliary shaft and the internal teeth of the present invention when they are separated.

Fig. 5 is an exploded view of the drill chuck of the present invention.

Fig. 6 is a schematic structural view of the rotary sleeve of the drill chuck of the present invention.

The reference signs are:

a shell 1,

A main shaft 2, a third gear 21,

A counter shaft 3, a catch 31, a first gear 32, a second gear 33, a first bearing 34, an elastic member 35,

Drill chuck 4, rotary sleeve 41, internal teeth 411, convex part 412, drill body 42, connecting hole 421, clamping jaw hole 422, screw 43, clamping groove 431, clamping jaw 44,

Switch knob 5, spacing post 51.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The mechanisms of the embodiments of the present invention, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 to 6, the electric drill with an automatic loosening and tightening type drill chuck of the present embodiment includes: the drill chuck comprises a shell 1, a main shaft 2, a secondary shaft 3, a drill chuck 4 and a switch knob 5.

Specifically, a motor and a main shaft 2 are arranged inside a shell 1 of the electric drill, the main shaft 2 is connected with the output end of the motor, and a drill chuck 4 connected with the main shaft 2 is arranged outside the shell 1 of the electric drill; an auxiliary shaft 3 parallel to the main shaft 2 is further arranged inside a shell 1 of the electric drill, a switch knob 5 is arranged on the shell 1, the switch knob 5 is located on the outer side of the left end of the auxiliary shaft 3, a blocking piece 31 and a first gear 32 are respectively arranged at the left end and the right end of the auxiliary shaft 3, a circle of inner teeth 411 are arranged on one side, close to the main shaft 2, of the left end of the drill chuck 4, and the first gear 32 is meshed with the inner teeth 411 and drives the drill chuck 4 to clamp or loosen; the counter shaft 3 is also provided with a second gear 33, the second gear 33 is positioned between the first gear 32 and the baffle 31, the main shaft 2 is provided with a third gear 21, the counter shaft 3 is moved left and right along the axial direction through the switch knob 5, and the third gear 21 and the second gear 33 are in an engaged state or a disengaged state; the drill chuck 4 is automatically loosened and tightened through the driving of the motor, the user does not need to manually loosen and tighten the drill chuck 4, and the use by the user is convenient.

In a further embodiment, the countershaft 3 is further provided with a first bearing 34, the first bearing 34 being located between the second gear 33 and the flap 31; the auxiliary shaft 3 is also provided with a second bearing, the second bearing is positioned between the second gear 33 and the first gear 32, the shell 1 of the electric drill is provided with two mounting holes, and the first bearing 34 and the second bearing are respectively positioned in the mounting holes; the first bearing 34 and the second bearing serve to stabilize the secondary shaft 3 against wobbling of the secondary shaft 3 during operation.

In a further embodiment, the switch knob 5 is located above the housing 1 of the electric drill, the bottom of the switch knob 5 is provided with eccentrically distributed limiting columns 51, the limiting columns 51 are vertically arranged, and the limiting columns 51 are always located on the left side of the blocking piece 31; the switch knob 5 rotates around the central axis of the switch knob so as to drive the limiting column 51 below to rotate; an elastic piece 35 is further arranged between the first bearing 34 and the blocking piece 31, the elastic piece 35 provides elastic force, the elastic piece 35 is a spring, and the auxiliary shaft 3 always tends to move to the left under the action of the elastic force.

In a further embodiment, the drill chuck 4 comprises a rotary sleeve 41, a drill body 42, a nut 43 and a clamping jaw 44 arranged in the rotary sleeve 41; the left end and the right end of the drill body 42 are respectively provided with a connecting hole 421 and a clamping jaw hole 422; the connecting hole 421 is in threaded connection with the main shaft 2; jaw holes 422 are used to mount jaws 44; the screw 43 is sleeved on the drill body 42, the screw 43 is in threaded connection with the clamping jaw 44, and the screw 43 is clamped with the rotating sleeve 41.

In a further embodiment, three jaw holes 422 are provided, and the jaw holes 422 are obliquely provided, the jaw holes 422 being evenly arranged around the central axis of the drill body 42; the clamping jaws 44 are three in number, and the clamping jaw holes 422 correspond to the clamping jaws 44 one by one; the clamping jaws 44 are provided with threads matched with the screw nut 43, and the screw nut 43 drives the three clamping jaws 44 to advance and retreat simultaneously through rotation.

In a further embodiment, a plurality of clamping grooves 431 are formed in the outer ring of the nut 43, a plurality of protruding portions 412 are formed in the inner ring of the rotating sleeve 41, the clamping grooves 431 correspond to the protruding portions 412 in a one-to-one mode, the nut 43 is clamped with the rotating sleeve 41, the rotating sleeve 41 rotates to drive the nut 43 to rotate, the nut 43 rotates to drive the three clamping jaws 44 to advance and retreat simultaneously, and automatic opening and closing of the clamping jaws 44 are achieved.

In order to facilitate understanding of the technical scheme of the electric drill with the automatic elastic drill chuck, the working process of the electric drill is briefly described as follows:

the user rotates the switch knob 5 to cause the auxiliary shaft 3 to displace rightwards, and the first gear 32 at the right end of the auxiliary shaft 3 is meshed with the inner teeth 411 of the rotating sleeve 41 of the drill chuck 4; the motor drives the main shaft 2 to rotate, the third gear 21 of the main shaft 2 is meshed with the second gear 33 of the auxiliary shaft 3, so that the auxiliary shaft 3 is driven to rotate, the rotating sleeve 41 is clamped with the screw 43 to further drive the screw 43 to rotate, and the screw 43 drives the three clamping jaws 44 to simultaneously advance and retreat when rotating in situ, so that the three clamping jaws are separated and attached;

after the drill bit is installed or disassembled, a user rotates the switch knob 5 to enable the auxiliary shaft 3 to move leftwards, the first gear 32 at the right end of the auxiliary shaft 3 is separated from the inner teeth 411 of the rotating sleeve 41 of the drill chuck 4, and the rotating sleeve 41 is prevented from rotating when the electric drill works.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims

1. The utility model provides an electric drill with automatic elasticity formula drill chuck, includes casing (1), motor, main shaft (2) be connected with motor drive and drill chuck (4) that are connected with main shaft (2), its characterized in that still includes: a secondary shaft (3) and a switch knob (5) which are parallel to the main shaft (2); the switch knob (5) is arranged on the shell (1); the right end of the auxiliary shaft (3) is provided with a first gear (32), the left end of the drill chuck (4) is provided with internal teeth (411), and the first gear (32) is meshed with the internal teeth (411) and drives the drill chuck (4) to clamp or loosen; the auxiliary shaft (3) is further provided with a second gear (33), the second gear (33) is located between the first gear (32) and the blocking piece (31), the main shaft (2) is provided with a third gear (21), the auxiliary shaft (3) is moved left and right along the axial direction through the switch knob (5), and the third gear (21) and the second gear (33) are in a meshed state or a disengaged state.

2. An electric drill with an automatic tighting drill chuck according to the claim 1, characterized in that the auxiliary shaft (3) is also provided with a first bearing (34), the first bearing (34) is located between the second gear (33) and the baffle (31).

3. The electric drill with the automatic elastic drill chuck as claimed in claim 2, characterized in that the bottom of the switch knob (5) is provided with a limit post (51) which is eccentrically distributed, and the limit post (51) is always positioned at the left side of the separation blade (31); the switch knob (5) rotates around the central axis of the switch knob; an elastic piece (35) is further arranged between the first bearing (34) and the baffle plate (31).

4. A power drill with an automatic tighting drill chuck according to claim 1, characterized in that the drill chuck (4) comprises: the rotary sleeve (41), a drill body (42), a nut (43) and a clamping jaw (44) are arranged in the rotary sleeve (41); the left end and the right end of the drill body (42) are respectively provided with a connecting hole (421) and a clamping jaw hole (422); the connecting hole (421) is connected with the main shaft (2); the jaw holes (422) are used for mounting the jaws (44); the screw nut (43) is sleeved on the drill body (42), the screw nut (43) is in threaded connection with the clamping jaw (44), and the screw nut (43) drives the clamping jaw (44) to move forwards and backwards.

5. An electric drill with an automatic tightening type drill chuck according to claim 4, characterized in that the jaw holes (422) are provided with three and are obliquely arranged, and the jaw holes (422) are uniformly arranged around the central axis of the drill body (42); the number of the clamping jaws (44) is three, and the clamping jaw holes (422) correspond to the clamping jaws (44) one by one.

6. An electric drill with an automatic tightneing drill chuck according to the claim 4, characterized in that, a plurality of catching grooves (431) are provided on the outer circle of the nut (43), a plurality of protrusions (412) are provided on the inner circle of the rotary sleeve (41), the catching grooves (431) match with the protrusions (412).