CN102814528A

CN102814528A - Multifunctional impact drill

Info

Publication number: CN102814528A
Application number: CN2012102968179A
Authority: CN
Inventors: 金应太
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-20
Filing date: 2012-08-20
Publication date: 2012-12-12
Anticipated expiration: 2032-08-20
Also published as: CN102814528B

Abstract

The invention discloses a multifunctional impact drill. The multifunctional impact drill comprises a power device, an impacting device, an electric drill impact conversion device and an output shaft, wherein a rack wheel is sleeved on the output shaft in a clearance fit manner and is connected to the power device. The multifunctional impact drill further comprises a torsion adjusting device which comprises an upper impact gear, steel torsion balls, a lower pressing plate and a torsion spring, wherein convex points are arranged on the right end face of the upper impact gear, the steel torsion balls are matched with the convex points and are used for receiving pressure from the torsion spring through the lower pressing plate, meanwhile, the upper impact gear is in interference fit with the output shaft, the rack wheel is provided with torsion transferring holes, and the steel torsion balls are located in the torsion transferring holes. The multifunctional impact drill has the advantages of triple use and more functions.

Description

Multifunctional percussion drill

Technical field

The present invention relates to the electric tool technical field, especially relate to a kind of multifunctional percussion drill.

Background technology

Usually, percussion drill comprises that power set, percussion mechanism, electric drill impact conversion equipment and output shaft, and its output shaft is connected to power set through gear wheel.Like this, percussion drill is through the conversion of electric drill impact conversion equipment, and output shaft can carry out the electric drill operation or impact operation.Because it is one of which machine dual-purpose, thereby very popular.But in real work, the workman also must carry the torsion brill that is used for substituting screwdriver except that percussion drill.Simultaneously, because the torsion drilling uses power supply to be direct current, power is little, thereby it is many not only to cause the workman to carry instrument, and uses inconvenience.For this reason, people's expectation can be bored function for the subsidiary torsion of percussion drill.

Summary of the invention

The purpose of this invention is to provide a kind of multifunctional percussion drill, it also has torsion and bores function, thereby have a machine three-use, the more characteristics of function outside the function that keeps electric drill and percussion drill.

To achieve these goals, the technical scheme that the present invention adopted is: multifunctional percussion drill comprises that power set, percussion mechanism, electric drill impact conversion equipment and output shaft; On this output shaft matched in clearance be with gear wheel, gear wheel is connected to power set, said multifunctional percussion drill includes the torsion adjusting device; This torsion adjusting device comprises impacts gear, torsion steel ball, lower platen, torque spring, wherein, impacts the gear right side on this and is provided with salient point; The torsion steel ball matches with this salient point; And the torsion steel ball is accepted the pressure of torque spring through lower platen, simultaneously, on impact gear and output shaft interference fit; Gear wheel is provided with the torsion transfer hole, and the torsion steel ball is positioned at this torsion transfer hole.

Said torsion adjusting device comprises that also torsion pressing plate and rotatable power turns round lid, and wherein, power is turned round and is provided with at least 2 steps in the lid, and this step and torsion pressing plate match, and the right-hand member of torque spring withstands on the left side of torsion pressing plate.

Said multifunctional percussion drill includes torsion electric drill conversion equipment; This torsion electric drill conversion equipment is: the interlock of torsion pressing plate has the gearshift lower cover, and this gearshift lower cover right side is provided with the lower cover projection, and gearshift lower cover right side is provided with non-rotatable gearshift loam cake; This gearshift loam cake left side is provided with the loam cake projection; This loam cake projection and lower cover projection match, and simultaneously, this gearshift lower cover left end holds out against lower platen.

Said percussion mechanism is: on impact the gear left side and be provided with passive double wedge, impact the gear left side on this and be provided with down and impact gear, this time impact gear right side is provided with the active double wedge, this active double wedge and passive double wedge match.

Said electric drill impacts conversion equipment and comprises the gearshift assembly, and this gearshift assembly is provided with limiting plate, and has through hole on the limiting plate, and this limiting plate withstands on the left end of output shaft.

After adopting said structure, the present invention compares the advantage that is had with prior art and is: a machine three-use, function are more.Multifunctional percussion drill of the present invention is outside the function that keeps electric drill and percussion drill; When if output shaft is in the electric drill state; The output torque of output shaft can be regulated; Then this output shaft has promptly had the function that torsion bores, and multifunctional percussion drill of the present invention has promptly solved preferably this problem.That is: output shaft load surpasses when setting moment of torsion, and gear wheel can't drive to go up and impact the gear rotation through the torsion steel ball, thereby output shaft can't continue rotation, and then makes output shaft have the function that torsion bores.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified:

Fig. 1 is the three-dimensional decomposition texture sketch map (part) of embodiments of the invention.

The specific embodiment

The following stated is merely preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.

Embodiment, see shown in Figure 1: multifunctional percussion drill comprises that power set 12, percussion mechanism, electric drill impact conversion equipment and output shaft 2.Power set 12 can be motors.On the output shaft 2 matched in clearance be with gear wheel 8, this gear wheel 8 is connected to power set 12.That is, power set 12 drive gear wheel 8 rotations, and gear wheel 8 can drive output shaft 2 rotations; And electric drill impacts conversion equipment electric drill and impact function are changed after, under the effect of percussion mechanism, output shaft 2 is when rotating; Can vertically go here and there, thereby have impact function.

In order to expand the function of this percussion drill, this multifunctional percussion drill includes the torsion adjusting device.Concrete, this torsion adjusting device comprises impacts gear 10, torsion steel ball 9, lower platen 7, torque spring 5.Wherein, impact gear 10 right sides on this and be provided with salient point 101, torsion steel ball 9 matches with this salient point 101.That is, torsion steel ball 9 is pressed in the gap between the salient point 101.At this moment, torsion steel ball 9 is accepted the pressure of torque spring 5 through lower platen 7.Certainly, the pressure of torque spring 5 has torsion steel ball 9 and is pressed in the potential energy in the space between the salient point 101 left from right to left.Simultaneously, on impact gear 10 and output shaft 2 interference fit, gear wheel 8 is provided with torsion transfer hole 81, torsion steel ball 9 is positioned at this torsion transfer hole 81.Like this; Under the effect of torque spring 5, when torsion steel ball 9 did not reach setting value at the load of output shaft 2, torsion steel ball 9 can not jumped out in the gap between the salient point 101; Thereby after gear wheel 8 rotations; Torsion steel ball 9 impacts gear 10 rotations along the axial line rotation of output shaft 2 in the drive, and then output shaft 2 rotations.After the load of output shaft 2 surpassed setting value, torsion steel ball 9 can be jumped out the gap between the salient point 101 to the right, skidded thereby produce between torsion steel ball 9 and the last impact gear 10, and then made output shaft 2 can't continue rotation.In sum, output shaft 2 has had the upper limit of output torque value, thereby has had the function that torsion bores.

Optimize, the torsion adjusting device comprises also that torsion pressing plate 4 and rotatable power are turned round and covers 1.Turn round such as power and to cover 1 and can vertically be articulated on the casing of multifunctional percussion drill, thereby under the external force turn, can be rotated.Wherein, power is turned round to cover and is provided with at least 2 steps in 1, and this step and torsion pressing plate 4 match, and the right-hand member of torque spring 5 withstands on the left side of torsion pressing plate 4.That is, torsion pressing plate 4 can cooperate with different steps, makes torsion pressing plate 4 on left and right directions, have different positions, thereby makes torque spring 5 have different initial pressures.Like this, the different potential energy that hold out against left that had of torsion steel ball 9.Obviously, torsion steel ball 9 has, and to hold out against potential energy big more, and torsion steel ball 9 is difficult in the gap between the salient point 101, jump out further, and then makes 2 moments of torsion that can export of output shaft big more, and 2 loads that can carry of this output shaft are big more.In sum, power is turned round and is covered 1 rotation, has adjusted the load value that output shaft 2 can bear.And power is turned round the gear that the quantity of covering 1 interior step is the load value of output shaft 2.Such as, step can be 8 grades of steps, output shaft 2 had both had 8 stage load bearing values.

Obviously, when multifunctional percussion drill was in torsion brill function, this multifunctional percussion drill can not be in impact conditions.

Further, this multifunctional percussion drill includes the torsion electric drill conversion equipment that is used to change electric drill function and torsion brill function.Concrete, this torsion electric drill conversion equipment is: 4 interlocks of torsion pressing plate have gearshift lower cover 6, and these gearshift lower cover 6 right sides are provided with lower cover projection 61, and gearshift lower cover 6 right sides are provided with non-rotatable gearshift loam cake 3.Wherein, the mode of torsion pressing plate 4 interlock gearshift lower covers 6 can be: place, torsion pressing plate 4 axle center is provided with groove, gearshift lower cover 6 outer surfaces are provided with the fin that matches with groove.Like this, after 4 rotations of torsion pressing plate, gearshift lower cover 6 rotates synchronously, and gearshift lower cover 6 can left and right displacement.These gearshift loam cake 3 left sides are provided with loam cake projection 31, and this loam cake projection 31 matches with lower cover projection 61.That is, when the peak of loam cake projection 31 and lower cover projection 61 pushed up mutually, gearshift lower cover 6 had maximum distance with gearshift loam cake 3; In the time of in loam cake projection 31 withstands on the gap between the lower cover projection 61, gearshift lower cover 6 has minimum distance with gearshift loam cake 3.Simultaneously, the left end of this gearshift lower cover 6 holds out against lower platen 7.That is, gearshift lower cover 6 and the distance of gearshift between the loam cake 3 have determined the position of lower platen 7 on left and right directions: gearshift lower cover 6 and gearshift loam cake 3 have maximum apart from the time, lower platen 7 is in relative high order end, thereby does not have mobile space; Gearshift lower cover 6 and gearshift loam cake 3 have minimum apart from the time, lower platen 7 is in relative low order end, thereby has mobile space.Like this; Through suitable adjustment, when making lower platen 7 be in no mobile space, lower platen 7 can limit torsion steel ball 9 and in the gap between the salient point 101, jump out; Make output shaft 2 no longer have torsion setting and regulatory function, thereby output shaft 2 only can carry out electric drill or impact operation.

Percussion mechanism can be taked multiple common mode, and it is moving that it is used to make output shaft 2 to produce vertical string, thereby make output shaft 2 have impact function.Optimize, this percussion mechanism is that last impact gear 10 left sides are provided with passive double wedge; Should go up impact gear 10 left sides and be provided with down impact gear 11, this time impacted gear 11 right sides and is provided with initiatively double wedge, and this active double wedge and passive double wedge match.That is, initiatively double wedge is with after passive double wedge is in contacting of rotation status, and vertically string is moving and form impulsive force can to make output shaft 2.

Certainly, electric drill impacts electric drill function and the impact function that conversion equipment is used to change this multifunctional percussion drill, and it can take multiple common mode.Optimize, this electric drill impacts conversion equipment and comprises gearshift assembly 13.This gearshift assembly 13 is provided with limiting plate 131, and has through hole 1311 on the limiting plate 131, and this limiting plate 131 withstands on the left end of output shaft 2.Like this, when output shaft 2 withstands on 131 last times of limiting plate, on impact gear 10 and impact gear 11 down and separate, thereby can't produce impulsive force; In the time of in output shaft 2 withstands on the through hole 1311 on the limiting plate 131, on impact gear 10 and impact down gear 11 and contact, thereby the generation impulsive force.

Percussion drill is widely-used at present, and other structure is identical with prior art with principle, repeats no more here.

Claims

1. multifunctional percussion drill; Comprise that power set (12), percussion mechanism, electric drill impact conversion equipment and output shaft (2), what this output shaft (2) was gone up matched in clearance is with gear wheel (8), and this gear wheel (8) is connected to power set (12); It is characterized in that: said multifunctional percussion drill includes the torsion adjusting device; This torsion adjusting device comprises impacts gear (10), torsion steel ball (9), lower platen (7), torque spring (5), wherein, impacts gear (10) right side on this and is provided with salient point (101); Torsion steel ball (9) and this salient point (101) match; And torsion steel ball (9) is accepted the pressure of torque spring (5) through lower platen (7), simultaneously, on impact gear (10) and output shaft (2) interference fit; Gear wheel (8) is provided with torsion transfer hole (81), and torsion steel ball (9) is positioned at this torsion transfer hole (81).

2. multifunctional percussion drill according to claim 1; It is characterized in that: said torsion adjusting device comprises that also torsion pressing plate (4) and rotatable power turns round lid (1); Wherein, Power is turned round in the lid (1) and is provided with at least 2 steps, and this step and torsion pressing plate (4) match, and the right-hand member of torque spring (5) withstands on the left side of torsion pressing plate (4).

3. multifunctional percussion drill according to claim 2; It is characterized in that: said multifunctional percussion drill includes torsion electric drill conversion equipment; This torsion electric drill conversion equipment is: torsion pressing plate (4) interlock has gearshift lower cover (6), and this gearshift lower cover (6) right side is provided with lower cover projection (61), and gearshift lower cover (6) right side is provided with non-rotatable gearshift loam cake (3); This gearshift loam cake (3) left side is provided with loam cake projection (31); This loam cake projection (31) and lower cover projection (61) match, and simultaneously, this gearshift lower cover (6) left end holds out against lower platen (7).

4. according to each described multifunctional percussion drill in the claim 1 to 3; It is characterized in that: said percussion mechanism is: on impact gear (10) left side and be provided with passive double wedge; Should go up impact gear (10) left side and be provided with down impact gear (11); This time impacted gear (11) right side and is provided with initiatively double wedge, and this active double wedge and passive double wedge match.

5. multifunctional percussion drill according to claim 4; It is characterized in that: said electric drill impacts conversion equipment and comprises gearshift assembly (13); This gearshift assembly (13) is provided with limiting plate (131); And have through hole (1311) on the limiting plate (131), and this limiting plate (131) withstands on the left end of output shaft (2).