CN2623385Y

CN2623385Y - Bi-velocity heavy electric drill

Info

Publication number: CN2623385Y
Application number: CN 03229977
Authority: CN
Inventors: 孙龙雄; 徐志鸿; 胡爱飞
Original assignee: NINGBO UNIVERSAL ELECTRIC MACHINERY CO Ltd
Current assignee: NINGBO UNIVERSAL ELECTRIC MACHINERY CO Ltd
Priority date: 2003-04-01
Filing date: 2003-04-01
Publication date: 2004-07-07
Anticipated expiration: 2013-04-01

Abstract

The utility model discloses a bi-velocity heavy electric drill which is an improvement on the basis of a shell, a motor, a gear and a pinion, a driving shaft, a spring of the prior art. Namely, the pinion is covered on a rotating shaft coaxially provided with the driving shaft, the gear and the pinion are respectively linked with a clutch which is arranged between the two and is fixed on the driving shaft alternatively, the inside of the shell is provided with a switch handle which corresponds to an operating hole on the side wall of the shell on one end and rotates relativing to the shell as well as takes the shape of bow, an elastic element is supported against the side of the switch handle, one end of the elastic element is fixed on the inner wall of the shell, the other end is supported against the outer end surface of the pinion. With the structure, because the switch handle is arranged on the side of the shell, during the operation, the switch handle can not touch the drill and the speed adjusting action can simply be finished by rotating the switch handle one hundred eight degrees; at the same time, the handle and the assistant handle can be arranged at different places according to the on-site requirements so as to be convenient to the flexible use during the operation to meet the operation need and self safety.

Description

The heavy electric drill of double speed

Technical field

The utility model relates to a kind of electric drill, especially refers to a kind of electric drill of adjustable speed.

Background technology

At present, the arrangements for speed regulation of general electric drill are to utilize two gears that vary in size and the engaged transmission of gear shaft to realize, as the patent No. is that 90209112.3 Chinese patent " can control the device of electric drill output speed and torsion simultaneously " is exactly a kind of scheme wherein, its pinion slides and is placed on the power transmission shaft, power transmission shaft is fixedlyed connected with drill bit, gear wheel also turns and sliding type is placed on the power transmission shaft, catch bar is roughly one and is inverted the U-shaped thing, the outside respectively and protruding pin that extended internally in the left side of catch bar, rotation is positioned at the adjustable ring of electric drill head, when catch bar is moved to the left, protruding pin just backs down gear wheel, pin on itself and the power transmission shaft is separated, and at this moment, the rotation of gear wheel can not drive power transmission shaft; And pinion tightly is linked on the power transmission shaft by its right-hand member spring restoring force, makes the drill bit high speed rotating.When catch bar is shifted to when right-hand, gear wheel is then by the restoring force of its left end spring, be forced to right-hand and pin on the binding power transmission shaft, thereby driving power transmission shaft slowly runs, being inverted the protruding pin that the U-shaped thing extends internally simultaneously pushes the connection of pinion and power transmission shaft open and compresses its right-hand member spring, therefore, adopt said structure and can reach the purpose of speed change output speed, but because drill bit is after use stops, general temperature is higher, also might also slowly run on inertia ground, and adjustable ring is located on the position of electric drill head, thereby when operation, might the striking drill bit and injure human body, it is dangerous therefore to operate, and during operation, need to rotate and gear wheel to be separated after the multi-turn or to link power transmission shaft, use inconvenience; Moreover whole arrangements for speed regulation complex structure, catch bar move dumb under the effect of adjustable ring.

Summary of the invention

Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of simple in structure, handling safety, the heavy electric drill of double speed easily are provided.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the heavy electric drill of this double speed comprises shell, place the motor in the shell, the gear shaft that links with motor output shaft and be meshed with gear shaft respectively big, pinion, described gear wheel slides to be placed on the power transmission shaft that fixes with drill bit and with making its spring that has to pinion side shifting trend and offsets, it is characterized in that: described pinion slides and is placed in described power transmission shaft to become in the rotating shaft of concentric setting, described big, pinion is respectively and between the two and the staggered interlock of the clutch on the power transmission shaft that is fixed on, it is corresponding with the handle hole on the side wall of outer shell and rotate with respect to shell to be built-in with an end at described shell, be arc shift bar, the elastic component that offsets with above-mentioned shift bar side, the one end is fixed on the outer casing inner wall, and the other end then offsets with the outer face of pinion.

Can be provided with the protruding circle of ring-type that the bearing with pinion offsets on the described gear wheel end face, described clutch is positioned at the transmission that matches with pinion bearing and gear wheel end face respectively of the protruding circle of this ring-type and its both ends of the surface.

The top of described shell can be provided with the handle of installing with a plurality of angles, and the two ends of described handle are installed on the two side of shell by bolt.

The left and right sidewall of described shell, roof thrin place at least can be provided with the installing hole that is connected with auxilliary handle.

Compared with prior art, advantage of the present utility model is: after adopting said structure, because shift bar is located at the side of shell, when operation, can not brush up against drill bit, and only need 180 ° of rotating switch handles, just can finish the speed governing action, therefore, use safe and convenient; And the installing hole that fixes with auxilliary handle is set on the left and right sidewall of shell and roof, and can auxilliary handle be installed on the different positions by the needs of execute-in-place, be beneficial to operation and the safety of self; Bolt on the turn handle also can turn to handle on the needed position in addition, applies in a flexible way when being convenient to work, satisfies various action needs, simultaneously, also is convenient to place and collection.

Description of drawings

Fig. 1 is the utility model example structure schematic diagram;

Fig. 2 is that A among Fig. 1 is to partial schematic diagram;

Fig. 3 be among Fig. 2 B to partial schematic diagram;

Fig. 4 be among Fig. 2 C to partial schematic diagram.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, the heavy electric drill of this double speed comprises shell 1, place the motor 2 in the shell 1, the gear shaft 3 that links with motor 2 output shafts, what be meshed with gear shaft 3 respectively is big,

pinion

11,7 and attaching plug, in the present embodiment, gear train adopts aluminium casting to process, has the precision height, intensity is big, reliability, the characteristics of security and good stability, wherein gear wheel 11 slides and is placed on the power transmission shaft 13 that fixes with drill bit, and pinion 7 slides and is placed in the rotating shaft 6 with 13 one-tenth concentric settings of power transmission shaft, rotating shaft 6 two ends are arranged in needle bearing 8, the needle bearing 8 of right-hand member can slide in rotating shaft 6 with pinion 7, greatly, pinion 11, be fixed with a clutch 9 on the power transmission shaft 13 between 7, the left side of this clutch 9 is provided with the groove of the transmission that matches with pinion right-hand member needle bearing 8, and be provided with and the gear wheel 11 end faces locating slot of clutch mutually at its right-hand member, correspondingly, on right-hand member needle bearing 8 and gear wheel 11 end faces, be respectively equipped with projection and the locating piece that matches with groove and locating slot, edge on gear wheel 11 end faces also is provided with the protruding circle 14 of ring-type simultaneously, this protruding circle 14 extends on the end face of right-hand member needle bearing 8 always, make clutch 9 be positioned at it, and the other end of gear wheel 11 offsets by bearing and spring 12, makes gear wheel 11 have the trend to pinion 7 side shiftings.

Be built-in with respect to shell 1 at described shell 1 and rotate and be arc shift bar 4, corresponding with the handle hole on the shell 1 and outer with being positioned at shell 1 knob 20 of one end of this shift bar 4 is connected, as shown in Figure 3, thus if rotation knob 20, just rotatable shift bar 4.The side of shift bar 4 and a spring leaf 5 offset, and an end of this spring leaf 5 is fixed on shell 1 inwall, and the other end then offsets with the outer face of pinion 7.

Carry for convenience and holding, handle 17 is installed above shell, the two ends of this handle 17 are installed on the two side of shell 1 by bolt 18, according to action need, and turn bolt 18, handle 17 can be moved needed arbitrary position, in the present embodiment, three kinds of positions are arranged, as shown in Figure 4, be the upright position, rotate 75 ° and 105 ° of positions; And on the left and right sidewall of shell 1 and roof, be provided with installing hole 10a, 10b, the 10c that is threaded mutually with auxilliary handle 19, can be as required, auxilliary handle 19 is screwed on arbitrary position of three installing holes, with handled easily, in addition, drill bit takes out from workpiece hole for convenience, is provided with rotating at the rear portion of power switch 15 and pulls out button 16, pulls out the direction of rotation that button 16 can be selected drill bit by stirring this.

When needing speed governing, as long as 180 ° of turning knobs, the plane of arc shift bar 4 and spring leaf 5 are offseted go to protuberance and spring leaf 5 offsets, in this process, force spring leaf 5 other ends to promote pinion 7 to gear wheel 11 side shiftings, by pinion 7 right-hand member needle bearings 8 and clutch 9 engagements, driving power transmission shaft 13 rotates, right-hand member needle bearing 8 promotes gear wheel 11 simultaneously, gear wheel 11 and clutch 9 are separated and compress its right-hand member spring 12, at this moment, connect power supply, motor 2 rotates, driven gear axle 3 rotates, gear shaft 3 is by pinion 7, clutch 9 drives power transmission shaft 13 high speed rotating, thereby makes drill bit carry out the high-speed drilling operation, and 11 of the gear wheels of this moment rotate and power transmission shaft 13 is rotated.If when drill bit is slowly run, cut off the electricity supply earlier, drill bit is stopped operating, stir 180 ° of knobs then, the protuberance of arc shift bar 4 and spring leaf 5 are offseted go to the plane and spring leaf 5 offsets, in this process, spring leaf 5 resets, its other end is moved to the left, the spring 12 that is positioned at gear wheel 11 right-hand members is under the effect of restoring force, make gear wheel 11 to pinion 7 side shiftings, promote pinion 7 by the protruding circle 14 of ring-type simultaneously and move to the left, the needle bearing 8 of pinion 7 right-hand members is separated with clutch 9, and gear wheel 11 meshes with clutch 9 in moving process, at this moment, connect power supply, motor 2 rotates, driven gear axle 3 rotates, power transmission shaft 13 is given in not transmission with 7 rotations of gear shaft 3 pinion in mesh, and gear shaft 3 is by gear wheel 11, clutch 9 drives power transmission shaft 13 and slowly runs, and makes the boring of drill bit low speed.

Claims

1, the heavy electric drill of a kind of double speed, it comprises shell (1), place the motor (2) in the shell (1), gear shaft (3) that links with motor (2) output shaft and the gear wheel (11) that is meshed with gear shaft (3) respectively, pinion (7), described gear wheel (11) slip is placed in the power transmission shaft (13) that fixes with drill bit and upward and with making its spring (12) that has to pinion (7) side shifting trend offsets, it is characterized in that: described pinion (7) slides and is placed in the rotating shaft (6) that becomes concentric setting with described power transmission shaft (13), described big, pinion (11), (7) respectively and the staggered interlock of clutch (9) between the two and on the power transmission shaft that is fixed on (13), it is corresponding with the handle hole on shell (1) sidewall and rotate with respect to shell (1) to be built-in with an end at described shell (1), be arc shift bar (4), the elastic component that offsets with above-mentioned shift bar (4) side, the one end is fixed on shell (1) inwall, and the other end then offsets with the outer face of pinion (7).

2, the heavy electric drill of double speed according to claim 1, it is characterized in that: described gear wheel (11) end face is provided with the protruding circle of ring-type (14) that the bearing with pinion (7) offsets, and described clutch (9) is positioned at the transmission that matches with pinion bearing (8) and gear wheel (11) end face respectively of the protruding circle of this ring-type (14) and its both ends of the surface.

3, the heavy electric drill of double speed according to claim 1, it is characterized in that: described elastic component is spring leaf (5).

4, according to claim 1 or the heavy electric drill of 2 or 3 described double speeds, the top that it is characterized in that described shell (1) is provided with the handle of installing with a plurality of angles (17), and the two ends of described handle (17) are installed on the two side of shell (1) by bolt (18).

5, according to claim 1 or the heavy electric drill of 2 or 3 described double speeds, it is characterized in that: the place of thrin at least of the left and right sidewall of described shell (1), roof is provided with and assists installing hole (10a), (10b), (10b) that handle (19) is connected.