CN205869526U - Energy storage structure of electric drill output shaft - Google Patents

Abstract

The utility model relates to an energy storage structure of electric drill output shaft, it is poor to have solved the electric drill overload capacity among the prior art, causes the not enough of electric drill life weak point. The utility model provides a pair of energy storage structure of electric drill output shaft, the cover is equipped with energy storage piece and elastic energy storage portion on the power shaft, is equipped with the slide mass between energy storage piece and the power shaft, the electric drill in the course of the work, the rotating speed fluctuation of power shaft makes elastic energy storage portion pass through slide mass, energy storage piece and accomplishes energy storage or exoergic to make the electric drill when transshipping, elastic energy storage portion can provide extra effort to the power shaft, and then optimizes the overload capacity of electric drill, in addition, electric drill power shaft rotational speed in the course of the work is frequently undulant, and elastic energy storage portion can improve the fluctuation of power shaft rotational speed through energy storage or exoergic effectively for the electric drill is more steady in the course of the work, has prolonged the life of electric drill.

Description

A kind of energy storing structure of electric drill output shaft

Technical field

This utility model relates to electric drill accessory, particularly relates to the energy storing structure of a kind of electric drill output shaft.

Background technology

Electric drill is the one of boring bar tool, generally refers to Handheld drill instrument；Hand held electric drill has lightweight, use Feature easily, thus be widely used.

Electric drill of the prior art includes driving motor and drill bit, by driving driven by motor drill bit to rotate in boring procedure, Thus realize drilling function；But, electric drill simple in construction of the prior art, the drive shaft driving motor is direct by change speed gear box Drive bit, and the load that in boring procedure, drill bit is born is alternate load, say, that the effect that drill bit is born Power is not constant, and therefore, the impact that drill bit bears in boring procedure is bigger；It addition, electric drill of the prior art overload Ability, causes electric drill to be easily damaged, and shortens the service life of electric drill.

Summary of the invention

The energy storing structure of a kind of electric drill output shaft that this utility model provides, it is intended to overcome electric drill of the prior art to transship Ability, causes the deficiency that electric drill service life is short.

In order to solve above-mentioned technical problem, this utility model adopts the following technical scheme that the energy storage of a kind of electric drill output shaft Structure, including line shaft, described line shaft is arranged with energy-storage blocks, described line shaft is also arranged with elastic energy storage portion, described Line shaft is provided with the keeper positioning elastic energy storage portion, described elastic energy storage portion one end conflict energy-storage blocks, described bullet Property energy storage part the other end positioned by keeper, being provided with between described energy-storage blocks and line shaft can simultaneously along line shaft radially and axle To the slide mass of displacement, and described slide mass realizes energy-storage blocks and the connection of line shaft or disengagement by slip.

In technique scheme, line shaft is arranged with elastic energy storage portion and energy-storage blocks, between energy-storage blocks and line shaft Being provided with slide mass, in use, the load that drill bit bears is exchange load to electric drill, and the rotating speed causing line shaft is also alternately Change so that elastic energy storage portion can constantly accumulation of energy, exoergic, line shaft overload time, elastic energy storage portion can to move Power axle provides extra power, effectively optimizes the overload performance of electric drill, and electric drill work is more steady, extends making of electric drill Use the life-span.

A kind of optional scheme, described slide mass is steel ball, and described line shaft offers the chute accommodating steel ball, described Chute includes receiving portion and slideway portion, and the degree of depth of described accommodation section is not less than the diameter of steel ball, and the degree of depth in described slideway portion is less than The diameter of steel ball, described energy-storage blocks offers the groove accommodating steel ball, and the degree of depth of described groove is less than the diameter of steel ball.Steel ball Flexibly, energy-storage blocks is connected with line shaft or departs from flexibly, optimizes the serviceability of energy storing structure for simple in construction and slip；And Steel ball is cheap, reduces the use cost of energy storing structure.

A kind of optional scheme, described chute has two, is respectively equipped with a steel ball, and two chutes in every chute Receiving portion communicate, two chutes are done orthographic projection in the plane being parallel to line shaft axis, two chutes are on this plane Projection composition V-shaped.Article two, chute coordinates two steel balls, and energy storing structure is at accumulation of energy or exergonic process medium power axle and energy-storage blocks Uniform force, extends the service life of energy-storage blocks, line shaft.

A kind of optional scheme, is provided with pad between described elastic energy storage portion and energy-storage blocks, described pad and energy-storage blocks it Between be provided with and reduce the steel ball of frictional force between pad and energy-storage blocks.Energy storing structure is in energy storage or exergonic process, and energy-storage blocks is servo-actuated Power axle rotates, and elastic energy storage portion does not rotate with line shaft, and steel ball and pad efficiently reduce elastic energy storage portion, energy-storage blocks Abrasion, extend the service life of elastic energy storage portion, energy-storage blocks.

A kind of optional scheme, described energy-storage blocks offers the ring-type breach accommodating steel ball, and energy-storage blocks is set in power After on axle, ring-type breach is coaxial with line shaft.Steel ball location is reliable, optimizes energy storing structure stability in use Energy.

A kind of optional scheme, described pad is sheathed in ring-type breach.Pad location is reliable, optimizes energy storing structure and exists Stability during use.

A kind of optional scheme, described keeper is the gear being fixed on line shaft；Or, described keeper is elastic Solder joint between energy storage part and line shaft；Or, described keeper is the locating dowel being welded on line shaft.Fixture is gear Time, elastic energy storage portion pushes against gear and can further be positioned gear, reduce in Meshing Process of Spur Gear produce make an uproar Sound, optimizes the serviceability of electric drill.Elastic energy storage portion all can be positioned by solder joint or locating dowel reliably, optimizes storage Can structure stability in use.

A kind of optional scheme, described elastic energy storage portion is stage clip；Or, described elastic energy storage portion is for producing elastic shape The resilient sleeve become.Stage clip or resilient sleeve are respectively provided with good accumulation of energy, exoergic function, optimize the serviceability of energy storing structure.

A kind of optional scheme, the axis of described groove is parallel to the axis of energy-storage blocks.Steel ball is easy to assembling.

Compared with prior art, the energy storing structure of a kind of electric drill output shaft that this utility model provides, have the advantage that Being arranged with energy-storage blocks and elastic energy storage portion on line shaft, be provided with slide mass between energy-storage blocks and line shaft, electric drill is worked Cheng Zhong, the fluctuation of speed of line shaft makes elastic energy storage portion complete accumulation of energy or exoergic by slide mass, energy-storage blocks, so that electric When being drilled in overload, elastic energy storage portion can provide extra active force to line shaft, and then optimizes the overload capacity of electric drill；Separately Outward, electric drill line shaft rotating speed frequent fluctuation in the course of the work, elastic energy storage portion passes through accumulation of energy or exoergic, can effectively improve The fluctuation of line shaft rotating speed so that electric drill is the most steady, extends the service life of electric drill.

Accompanying drawing explanation

Accompanying drawing 1 is the front view of the energy storing structure of this utility model a kind of electric drill output shaft；

Accompanying drawing 2 is the blast of the energy storing structure of this utility model a kind of electric drill output shaft；

Accompanying drawing 3 is the front view of the energy storing structure medium power axle of this utility model a kind of electric drill output shaft；

Accompanying drawing 4 be this utility model a kind of electric drill output shaft energy storing structure in the main sectional view of energy-storage blocks；

Accompanying drawing 5 is the sectional view after the energy storing structure of this utility model a kind of electric drill output shaft is applied to electric drill.

Detailed description of the invention

Below in conjunction with the accompanying drawings, the energy storing structure of a kind of electric drill output shaft of the present utility model is described further.Such as figure 1, shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, the energy storing structure of a kind of electric drill output shaft, including line shaft 1, line shaft 1 is by driving motor Driven by change speed gear box, described line shaft 1 is arranged with energy-storage blocks 2, described line shaft 1 is also arranged with elastic energy storage portion 3, institute Stating elastic energy storage portion 3 is stage clip, and described line shaft 1 is further fixed on gear, and described line shaft 1 is provided with elastic energy storage portion 3 Carrying out the keeper 4 positioned, this keeper 4 is the gear being fixed on line shaft 1, described stage clip one end conflict energy-storage blocks 2, The side of the other end conflict gear of stage clip, in line shaft 1 rotation process energy-storage blocks 2 rotate with line shaft 1 and stage clip not with Line shaft 1 rotates, and now, can produce violent friction between stage clip and energy-storage blocks 2, and this friction directly contributes energy-storage blocks 2 and pressure The abrasion of spring；

In order to reduce the friction of stage clip and energy-storage blocks 2；See Fig. 1, Fig. 2, Fig. 3, Fig. 4, between described stage clip and energy-storage blocks 2 It is provided with pad 10, is provided with between described pad 10 and energy-storage blocks 2 and reduces the steel ball 11 of frictional force between pad 10 and energy-storage blocks 2, Stage clip is conflicted on energy-storage blocks 2 by pad 10, steel ball 11, and described steel ball 11 should have multiple, and the particular number of steel ball 11 is not done Limiting, all steel balls 11 are looped around on the circumference of line shaft 1, and described energy-storage blocks 2 offers the ring-type breach accommodating steel ball 11 12, steel ball 11 can play the effect supporting energy-storage blocks 2 in being arranged on ring-type breach 12, energy-storage blocks 2 be set on line shaft 1 with After, ring-type breach 12 is coaxial with line shaft 1, and described pad 10 is sheathed in ring-type breach 12 so that pad 10, steel ball 11 To obtain good location, it is to avoid electric drill steel ball 11 in the course of the work departs from ring-type breach 12, optimizes the steady of energy storing structure Qualitative energy；

See Fig. 1, Fig. 2, Fig. 3, Fig. 4, be provided with between described energy-storage blocks 2 and line shaft 1 can simultaneously along line shaft 1 radially and The axially slide mass 5 of displacement, described slide mass 5 is steel ball, and described slide mass 5 realizes energy-storage blocks 2 and power by slip The connection of axle 1 or disengagement, say, that the slip of steel ball can realize two kinds of functions, the first function can make energy-storage blocks 2 with Line shaft 1 disengages, and can not transmit power between line shaft 1 and energy-storage blocks 2；The second function can make energy-storage blocks 2 and line shaft 1 Connect, power between line shaft 1 and energy-storage blocks 2, can be transmitted；

For making the slip of steel ball can realize above two function, see Fig. 1, Fig. 2, Fig. 3, Fig. 4, on described line shaft 1 Offering the chute 6 accommodating steel ball, described chute 6 includes receiving portion 7 and slideway portion 8, and the degree of depth of described accommodation section 7 is not less than steel The diameter of ball, when steel ball is positioned at receiving portion 7, line shaft 1 disengages with energy-storage blocks 2；The degree of depth in described slideway portion 8 is straight less than steel ball Footpath, described energy-storage blocks 2 offers the groove 9 accommodating steel ball, and the degree of depth of described groove 9 is less than the diameter of steel ball, and steel ball slips into During slideway portion 8, a part for steel ball can stretch in groove 9, it is achieved line shaft 1 and the connection of energy-storage blocks 2, fills for making steel ball be easy to Joining, the axis of described groove 9 is parallel to the axis of energy-storage blocks 2；

Seeing Fig. 2, Fig. 3, when energy-storage blocks 2 is connected with line shaft 1, energy-storage blocks 2 transmits power with line shaft 1 by steel ball, For making line shaft 1, energy-storage blocks 2 uniform force, described chute 6 has two, is respectively equipped with a steel ball in every chute 6, and Article two, the receiving portion 7 of chute 6 communicates, and in the plane being parallel to line shaft 1 axis, two chutes 6 are done orthographic projection, two cunnings Groove 6 projection composition V-shaped on this plane, by two steel ball transmission power, energy-storage blocks 2, line shaft 1 uniform force, prolongs Energy-storage blocks 2, the service life of line shaft 1 are grown.

The operation principle of above-mentioned embodiment is: electric drill starts (start) moment line shaft 1 and rotates, and now steel ball is positioned at appearance Receiving in portion 7, when line shaft 1 starts, steel ball is static, and energy-storage blocks 2 is the most static, drives empty load of motor power not increase during start, There is huge speed difference when start between line shaft 1 and energy-storage blocks 2, along with being rotated further of line shaft 1, steel ball is at inertia Rolling along chute 6 under effect, and slipped into slideway portion 8 by receiving portion 7, steel ball also can edge while radial rolling along line shaft 1 The axial rolling of line shaft 1；Now, steel ball applies forces to energy-storage blocks 2 by the groove 9 on energy-storage blocks 2, and energy-storage blocks 2 is subject to Power rotates with line shaft 1, along the axially-movable of line shaft 1 simultaneously while that energy-storage blocks 2 being due to the axial force by steel ball, from And energy-storage blocks 2 obtains rotation function, during energy-storage blocks 2 axially-movable, applying axial force to steel ball 11, steel ball 11 is again to pad 10 apply the active forces axis of line shaft 1 (this active force be parallel to), apply active force to stage clip again, now after pad 10 stress Stage clip obtains compression energy；Line shaft 1 continues to rotate, along with the reduction of speed difference between energy-storage blocks 2 and line shaft 1, steel ball to The moment that energy-storage blocks 2 applies diminishes, and stage clip initially axially discharges compression energy and executes axial force to steel ball to pad 10, pad 10 11, steel ball 11 applies axial force to energy-storage blocks 2, and energy-storage blocks 2 applies axial force by groove 9 to be executed to steel ball, steel ball Adding axial force to line shaft 1, due to the effect of line shaft 1 upper hopper chute 6, steel ball bears the axial reaction force of line shaft 1 With radial rotary power, so that the radial reaction force of steel ball is supplied to energy-storage blocks 2 by groove 9, energy-storage blocks 2 is made to accelerate rotation Turn；When the rotating speed of line shaft 1 reaches rated no-load rotating speed, energy-storage blocks 2 can reach no-load speed subsequently, and energy-storage blocks 2 has Maximum rotation function, now identical with energy-storage blocks 2 rotating speed due to line shaft 1, steel ball is now no longer influenced by line shaft 1 or energy storage The active force of block 2, returns to home position when not stressing i.e. receiving portion 7, the not energy storage of stage clip now；

During boring, line shaft 1, by external rotational force square, drives motor to have and is dropped slow-revving characteristic by external force, now The rotating speed of line shaft 1 also can reduce, and the rotating speed of energy-storage blocks 2 still keeps former speed, energy-storage blocks 2 now delivered energy, applies radially Active force is rolled into slideway portion 8 to steel ball, steel ball by receiving portion 7, and due to the effect of chute 6, steel ball applies radial forces to dynamic Power axle 1, stage clip starts energy storage, and to line shaft 1, makes line shaft 1 make useful work, energy storage through the energy-storage blocks 2 applying radially anti-power of work After block 2 discharges kinetic energy, rotating speed can reduce, until same with line shaft 1 rotating speed, now stage clip not energy storage；When driving motor output phase With Effective power time, the kinetic energy through energy-storage blocks 2 discharges and drives the common effect of motor effective power so that drive motor institute Power is relatively small, thus effectively improves impact when driving motor work, and the working speed of line shaft 1 also can be Promote；When line shaft 1 is at work by alternate stress, energy-storage blocks 2 continuous accumulation of energy, exoergic, make the working speed of line shaft 1 become Changing relatively small, electric drill work is the most stable；

Electric drill is by bigger external force when making driving motor by stall, and line shaft 1 rotating speed moment is 0, and now energy-storage blocks 2 is still Keeping state (i.e. rotation status) before stall, now the stall active force suffered by electric drill does not increase, and energy-storage blocks 2 discharges subsequently Kinetic energy, owing to the kinetic energy of energy-storage blocks 2 release is relatively small, can't cause further injury to electric drill and workpiece.

The noise that energy storing structure in above-mentioned embodiment produces when can also be effectively reduced gear engagement: no matter drive The start-up course of galvanic electricity machine, or drive motor by the duty of alternate stress and to drive motor by duty to shutdown Process, stage clip is continuous accumulation of energy, exoergic under the effect of energy-storage blocks 2, makes the flank of tooth of line shaft 1 gear engage on motor with driving Be always maintained at flexible paste tight fit between the flank of tooth of gear, relative in prior art between the flank of tooth rigidity touching coordinate, significantly subtract Lack rigidity between the flank of tooth uninterruptedly to touch and the sound that sends, thus the noise produced when reducing gear engagement.

Above-mentioned embodiment is only used for clearly describing the technical solution of the utility model, is not to of the present utility model Limiting, those skilled in the art can convert in the specific implementation accordingly；

As, described keeper 4 can also be the solder joint between elastic energy storage portion 3 and line shaft 1, i.e. elastic energy storage portion 3 with Line shaft 1 welds together；Or, described keeper 4 can also be for be welded on the locating dowel on line shaft 1.

Elastic energy storage portion 3 in above-mentioned embodiment can also use and can produce the replacement of elastically-deformable resilient sleeve.

These are only preferred implementation of the present utility model, it is intended to embody prominent technique effect of the present utility model and excellent Gesture, is not the restriction to the technical solution of the utility model.Those skilled in the art will appreciate that all are based on this reality Amendment, change or the substitute technology feature made by new technique content, all should be covered by right appended by this utility model In requiring the technology category advocated.

Claims (9)

1. an energy storing structure for electric drill output shaft, including line shaft (1), it is characterised in that: described line shaft is arranged with on (1) Energy-storage blocks (2), described line shaft (1) is also arranged with elastic energy storage portion (3), and described line shaft (1) is provided with elastic energy storage Portion (3) carries out the keeper (4) positioned, described elastic energy storage portion (3) one end conflict energy-storage blocks (2), described elastic energy storage portion (3) The other end by keeper (4) position, be provided with between described energy-storage blocks (2) and line shaft (1) can while along line shaft (1) the most radially With the slide mass (5) of axial displacement, and described slide mass (5) realizes the connection of energy-storage blocks (2) and line shaft (1) by slip Or disengage.

The energy storing structure of a kind of electric drill output shaft the most according to claim 1, it is characterised in that: described slide mass (5) is Steel ball, described line shaft (1) offers the chute (6) accommodating steel ball, and described chute (6) includes receiving portion (7) and slideway portion (8), the degree of depth of described accommodation section (7) is not less than the diameter of steel ball, and the degree of depth of described slideway portion (8) is less than the diameter of steel ball, institute Stating and offer the groove (9) accommodating steel ball on energy-storage blocks (2), the degree of depth of described groove (9) is less than the diameter of steel ball.

The energy storing structure of a kind of electric drill output shaft the most according to claim 2, it is characterised in that: described chute (6) has two Bar, is respectively equipped with a steel ball in every chute (6), and the receiving portion (7) of two chutes (6) communicates, by two chutes (6) Orthographic projection is done, two chutes (6) projection composition V-shaped on this plane in the plane being parallel to line shaft (1) axis.

4. according to the energy storing structure of a kind of electric drill output shaft described in claim 1 or 3, it is characterised in that: described elastic energy storage It is provided with pad (10) between portion (3) and energy-storage blocks (2), between described pad (10) and energy-storage blocks (2), is provided with reduction pad (10) And the steel ball (11) of frictional force between energy-storage blocks (2).

The energy storing structure of a kind of electric drill output shaft the most according to claim 4, it is characterised in that: on described energy-storage blocks (2) Offer the ring-type breach (12) accommodating steel ball (11), after energy-storage blocks (2) is set on line shaft (1), ring-type breach (12) Coaxial with line shaft (1).

The energy storing structure of a kind of electric drill output shaft the most according to claim 5, it is characterised in that: described pad (10) is sheathed In ring-type breach (12).

The energy storing structure of a kind of electric drill output shaft the most according to claim 6, it is characterised in that: described keeper (4) is It is fixed on the gear on line shaft (1)；Or, described keeper (4) is the weldering between elastic energy storage portion (3) and line shaft (1) Point；Or, described keeper (4) is for be welded on the locating dowel on line shaft (1).

The energy storing structure of a kind of electric drill output shaft the most according to claim 6, it is characterised in that: described elastic energy storage portion (3) it is stage clip；Or, described elastic energy storage portion (3) is for can produce elastically-deformable resilient sleeve.

The energy storing structure of a kind of electric drill output shaft the most according to claim 2, it is characterised in that: the axle of described groove (9) Line is parallel to the axis of energy-storage blocks (2).