CN201320641Y - Reciprocating saw - Google Patents

Abstract

A reciprocating saw comprises a casing extending in the lengthwise direction, a motor arranged in the casing, a main shaft perpendicular to the lengthwise direction and driven by the motor, a reciprocating lever in eccentric joint with the main shaft and conduct reciprocating movement along the lengthwise direction through the rotation of the main shaft, and a cutter lifting mechanism conduct cutting lifting to the reciprocating lever in a direction perpendicular to the lengthwise direction. The reciprocating saw further comprises a cutter lifting gear regulating mechanism for adjusting the cutter lifting position, and a fixing part connected on the reciprocating lever and an actuating part connected with the fixing part in a matched manner. When the actuating part slides to different positions in the lengthwise direction, the fixing part drives the reciprocating lever to be correspondingly lifted to corresponding height in the direction perpendicular to the lengthwise direction. By adopting the design, the entire cutter lifting gear regulating mechanism has the advantages of simple structure and convenient use. Furthermore, the cutter lifting gear regulating mechanism is positioned at the top part of the casing and does not need occupying larger use space.

Description

Reciprocating saw

Technical field

The utility model relates to a kind of reciprocating saw, particularly relates to a kind of cutter lifting gear governor motion of reciprocating saw.

Background technology

Disclosing among the United States Patent (USP) bulletin US4550501 has a kind of reciprocating saw with cutter lifting gear governor motion, this cutter lifting gear governor motion to be positioned at the position of reciprocating lever housing and close handle, can rotate around a pivot.This pivot extends to outside the casing always, thereby can make the direct manual operation of operator.When the operator rotates this cutter lifting gear governor motion, the roller that originally contacts with the cutter lifting dish will be lifted a segment distance, thereby make cutter lifting dish and contacting of roller occur over just the upper level position of cutter lifting dish.This mode can realize that different gear adjustings is carried out in operation to cutter lifting, but the pivot in this mode often occupies bigger usage space, uses for the design of instrument and brings very big inconvenience.

Disclose among the United States Patent (USP) bulletin US6249979 another kind of reciprocating saw is arranged, its cutter lifting gear governor motion is arranged on the casing top, and can rotate around fuselage, this is in-house to be provided with an irregular annular element with high low level, and support a pin by this annular element, when pin contacts with the low level of annular element, the cutter lifting dish promotes pin jack-up reciprocating lever and does the cutter lifting action, and when pin contacts with the high position of annular element, when only the high position of cutter lifting dish contacts with pin, just promote pin jack-up reciprocating lever and do the cutter lifting action.Under this mode, though cutter lifting gear governor motion can be arranged on the casing top, the complex structure of this cutter lifting gear mechanism, element is more, for the manufacturing brings very big inconvenience.

For this reason, be necessary said mechanism is further improved in fact.

The utility model content

One of the purpose of this utility model is to provide a kind of cutter lifting gear governor motion of reciprocating saw of simple in structure, handled easily.

Another purpose of the present utility model is to provide a kind of structure small and exquisite, can be arranged on the casing top and do not take than large space the cutter lifting gear governor motion of reciprocating saw.

For realizing above-mentioned utility model purpose, the utility model discloses a kind of reciprocating saw, comprise the housing that extends along longitudinally, be arranged on the motor in the housing, perpendicular to this longitudinally and the main shaft that drives by motor, the reciprocating lever that is connected and moves reciprocatingly along this longitudinally with spindle eccentricity by the rotation of main shaft, the lifter that reciprocating lever is carried out the cutter lifting effect on perpendicular to this longitudinally, this reciprocating saw also comprises the cutter lifting gear governor motion of regulating the cutter lifting position, it further comprises fixture that is connected on the reciprocating lever and the actuator that connects with fixture, when actuator when longitudinally slides into diverse location, fixture drives reciprocating lever and correspondingly be promoted to respective heights on perpendicular to this longitudinally.

As further improvement of these options, be connected with the operating knob that uses for the operator on the cutter lifting gear governor motion of the present utility model, described operating knob is positioned at the top of casing; This push pedal is formed with first inclined-plane, relatively, is formed with second inclined-plane on this push rod, and first inclined-plane closely contacts with second inclined-plane, and this contact-making surface with respect to the horizontal plane becomes the angle of inclination; This gear governor motion also comprises the gear regulating part, and this gear regulating part is tabular, which is provided with skewed slot, is used for collecting company and is connected on pin on the push rod, and this gear regulating part also comprises the projection that vertically extends from the gear regulating part, is used for attended operation and turns round; This gear regulating part also is evenly distributed with locating slot, and on casing, is provided with groove on the side of casing rear end, and in wherein containing stage clip and hollow pins.

Adopt such design, make the simple in structure, easy to use of whole cutter lifting gear governor motion, and cutter lifting gear governor motion is positioned at the casing top, does not need to take bigger usage space.

Description of drawings

Fig. 1 is the stereogram of reciprocating saw in the specific embodiment of the present utility model;

Fig. 2 is the part-structure schematic diagram of this reciprocating saw;

Fig. 3 is the schematic perspective view of the gear governor motion in this reciprocating saw;

Fig. 4 is the explosive view of this gear governor motion;

Fig. 5 is the schematic diagram of the lifter under the zero-span;

Fig. 6 is the schematic diagram of the lifter under the gear;

Fig. 7 is the schematic diagram of the lifter under two gears;

Fig. 8 is the schematic diagram of the lifter under three gears;

Wherein, the related elements reference numeral is listed as follows:

The 1-housing; The 11-groove; The 12-stage clip; The 13-hollow pins; The 2-motor; The 21-motor drive shaft; The 3-main shaft; The 31-bevel gear; The 32-eccentric shaft; The 33-needle bearing; The 4-reciprocating lever; The 41-chute; The 42-oiliness bearing; 5-cutter lifting dish; The 51-loading end; 52-cutter lifting support; The 53-horizontal part; The 54-vertical component effect; The 55-connecting axle; The little bearing of 56-; 6-cutter lifting gear governor motion; The 61-push pedal; 62-first inclined-plane; The 63-push rod; 64-second inclined-plane; 65-gear regulating part; The 66-skewed slot; The 67-pin; The 68-projection; The 69-locating slot; The 7-operating knob.

The specific embodiment

Below in conjunction with drawings and the specific embodiments the utility model is described in further detail.

See also Fig. 1, the utility model discloses a kind of reciprocating saw, this reciprocating saw has lifter, and this lifter has a plurality of gears, makes things convenient for the user independently to regulate according to demand.Adjustment process specifically is to turn round 7 by an operation that is arranged on the housing 1 to realize.Different with the cutter lifting gear governor motion of traditional reciprocating saw is, the cutter lifting gear governor motion operated by rotary motion of conventional reciprocating saw is in the side of casing 1, and 7 tip positions that are arranged on housing 1 are turned round in operation of the present utility model, and the handled easily person uses.

See also Fig. 2, this reciprocating saw comprises the housing 1 that extends along longitudinally, be arranged on the motor 2 in the housing 1, the main shaft 3 that is provided with and is driven by motor 2 perpendicular to this longitudinally is with the main shaft 3 eccentric reciprocating levers 4 that are connected and move reciprocatingly along this longitudinally by the rotation of main shaft 3.Need to prove, shown among Fig. 2, the right side is defined as front end, and the left side is defined as the rear end.Motor 2 is arranged on the rear end of housing 1, its motor drive shaft 21 output rotation torques; Main shaft 3 is arranged on the front end of housing 1, is fixedly connected with bevel gear 31 on it, and this bevel gear 31 connects with motor drive shaft 21 engagements, thereby the rotation torque that motor 2 provides is passed on the main shaft 3.

Adopted typical reciprocating saw reciprocator in the present embodiment, promptly be connected with eccentric shaft 32 prejudicially on main shaft 3, the other end of this eccentric shaft 32 then is connected with chute 41 on the reciprocating lever 4 by needle bearing 33.Like this, be connected by the off-centre of main shaft 3 with reciprocating lever 4, when main shaft 3 when rotated, eccentric shaft 32 also will be done eccentric rotation thereupon, and then drive reciprocating lever 4 and move reciprocatingly along longitudinally.

Please continue to consult Fig. 2, the cutter lifting dish 5 that on main shaft 3, also has been permanently connected, this cutter lifting dish 5 is towards a side of reciprocating lever 4, and its circumferential edges is formed with loading end 51.It should be noted that this loading end 51 has difference in height on perpendicular to longitudinally, as shown in Figure 2, the height of loading end 51 that is positioned at main shaft 3 left part is less than its right side part.Between reciprocating lever 4 and cutter lifting dish 5, also be provided with cutter lifting support 52, this cutter lifting support 52 roughly is inverted L shape, comprises horizontal component 53 and vertical component 54.Wherein, horizontal component 53 contacts with the rear end of reciprocating lever 4, plays a supportive role, and is formed with a connecting axle 55 on the vertical component 54, and be arranged with little bearing 56 on this connecting axle 55.The inner circumferential surface of this little bearing 56 contacts with connecting axle 55, and external peripheral surface then contacts with the loading end 51 of cutter lifting dish 5.When cutter lifting dish 5 along with main shaft 3 when rotated, because the difference in height that loading end 51 provides, can make the little bearing that contacts with loading end 51 56 drive cutter lifting supports 52 fix in the cycle perpendicular to the reciprocating action on the longitudinally, and then make the reciprocating lever 4 that supports by cutter lifting support 52 produce the cutter lifting effects.

In addition, be arranged with oiliness bearing 42 on the rear end of reciprocating lever 4, this oiliness bearing 42 contacts with cutter lifting support 52 and is supported by it, can improve the service life and the lubricating efficiency of cutter lifting support 52.

See also Fig. 3, for above-mentioned lifter being carried out gear adjusting effectively, above-mentioned lifter also is connected with gear governor motion 6.This gear governor motion 6 comprises the push pedal 61 on the rear end that is fixedly connected on reciprocating lever 4, with the push pedal 61 tight push rods 63 that contact, and by operator's control, can control push rod 63 and produce the gear regulating part 65 that slides along longitudinally.Wherein, push pedal 61 is arranged on the opposite side of reciprocating lever 4 with respect to cutter lifting support 52, is formed with first inclined-plane 62 on it, relatively, push rod 63 is formed with 64, the first inclined-planes 62, second inclined-plane and closely contacts with second inclined-plane 64, and this contact-making surface becomes the angle of inclination with respect to plane, reciprocating lever 4 place.This gear regulating part 65 is tabular, which is provided with a skewed slot 66, is used for collecting company and is connected on pin 67 on the push rod 63, also comprises the projection 68 that vertically extends from gear regulating part 65 on this gear regulating part 65, is used for attended operation and turns round 7.In addition, in order accurately to locate gear positions, on the side of casing 1 rear end, also be evenly distributed with locating slot 69 at gear regulating part 65, in the present embodiment, such locating slot 69 is provided with four, and expression zero is to third gear respectively.And on casing 1, also be provided with a groove 11, and in wherein containing stage clip 12 and hollow pins 13.When gear regulating part 65 is sliding, if under the effect of stage clip 12, hollow pins 13 will eject one in groove 11 and the locating slot 69 on time, and in the insertion locating slot 69, put in place thereby make the operator know that gear has been regulated.

Need to prove, said structure all is to serve as with reference to describing with the horizontal direction among Fig. 2, but do not represent that said structure is a restricted portion with the horizontal direction exactly, this reciprocating saw can be operated in mode vertical or that be inclined relative to horizontal equally, and the annexation between each structure all with horizontal direction on consistent.

During work, the operator turns round 7 regulation stall regulating parts 65 by operation, owing to pin 67 slides in skewed slot 66, thereby drives the slip that push rod 63 produces on the horizontal directions.At this moment, under the effect on two inclined-planes, push pedal 61 can be elevated in vertical direction, thereby make between the cutter lifting support 52 that supports reciprocating lever 4 and the reciprocating lever 4 and produce certain clearance, when push rod 63 continues to slide, it is more that push pedal 61 can be elevated ground, and then the gap between cutter lifting support 52 and the reciprocating lever 4 is further increased, like this, in the process of cutter lifting dish 5 rotations, have only when the high-order portion of loading end 51 contacts with little bearing 56, cutter lifting support 52 could contact with reciprocating lever 4, makes reciprocating lever 4 produce minimum cutter lifting amplitude, otherwise, when the cutter lifting gear not being regulated, when promptly cutter lifting support 52 is positioned at original position, reciprocating lever 4 will obtain maximum cutter lifting amplitude.

See also Fig. 5 to Fig. 8, disclosed four kinds of gears that adopted in the utility model respectively and regulated situation.As shown in Figure 5, the gear of this moment is adjusted to zero span, and push rod 63 levels slide into maximum position to the right, and, effect by two inclined-planes, push pedal 61 is raised to maximum position in vertical direction, like this, makes the little bearing 56 and the gap between the cutter lifting dish 5 that are installed on the cutter lifting support 52 be maximum, promptly in the rotary course of cutter lifting dish 5, little bearing 56 does not contact all the time with cutter lifting dish 5, and at this moment, this reciprocating saw is not done the cutter lifting action.And as shown in Figure 8, the gear of this moment is adjusted to third gear, and push rod 63 levels slide into minimum position to the right, and, effect by two inclined-planes, push pedal 61 is raised to minimum position in vertical direction, like this, makes to be installed between little bearing 56 and the cutter lifting dish 5 on the cutter lifting support 52 closely to contact, promptly in the rotary course of cutter lifting dish 5, little bearing 56 contacts all the time with cutter lifting dish 5, and by the difference in height on the cutter lifting dish 5, carries out the cutter lifting action of amplitude peak.

As shown in Figure 6 and Figure 7, disclosed the state that cutter lifting gear in the utility model is adjusted to a grade and second gear respectively.At this moment, push rod 63 levels slide into the centre position to the right, and, by the effect on two inclined-planes, push pedal 61 is raised to the centre position in vertical direction, like this, make to be installed between little bearing 56 on the cutter lifting support 52 and the cutter lifting dish 5 and have certain interval, promptly in the rotary course of cutter lifting dish 5, little bearing 56 contacts with the high position of cutter lifting dish 5, and does not contact with the low level of cutter lifting dish 5.Like this, when only little bearing 56 contacted with the high position of cutter lifting dish 5, cutter lifting support 52 just carried out the cutter lifting action to reciprocating lever 4, and its cutter lifting amplitude is less than third gear.

By above-mentioned adjusting, the operator can select for use suitable cutter lifting gear to carry out work according to the demand of oneself, comprising four kinds of gears, i.e. and zero span, one grade, second gear and third gear, the cutter lifting amplitude is by not having to increasing step by step.

Claims (5)

1, a kind of reciprocating saw, comprise the housing (1) that extends along longitudinally, be arranged on the motor (2) in the housing (1), perpendicular to this longitudinally and the main shaft (3) that drives by motor (2), with the eccentric reciprocating lever (4) that is connected and moves reciprocatingly along this longitudinally of main shaft (3) by the rotation of main shaft (3), the lifter (5) that reciprocating lever (4) is carried out the cutter lifting effect on perpendicular to this longitudinally, it is characterized in that: this reciprocating saw also comprises the cutter lifting gear governor motion (6) of regulating the cutter lifting position, it further comprises the actuator that is connected the fixture on the reciprocating lever (4) and connects with fixture, when actuator when longitudinally slides into diverse location, fixture drives reciprocating lever (4) and correspondingly be promoted to respective heights on perpendicular to this longitudinally.

2, reciprocating saw as claimed in claim 1 is characterized in that: be connected with the operating knob (7) that uses for the operator on this cutter lifting gear governor motion (6), described operating knob (7) is positioned at the top of casing (1).

3, reciprocating saw as claimed in claim 1 or 2, it is characterized in that: this fixture is push pedal (61), be formed with first inclined-plane (62) on it, relatively, this actuator is push rod (63), be formed with second inclined-plane (64) on it, first inclined-plane (62) closely contact with second inclined-plane (64), and this contact-making surface is the angle of inclination with respect to reciprocating lever (4) plane, place.

4, reciprocating saw as claimed in claim 3, it is characterized in that: this gear governor motion (6) also comprises gear regulating part (65), this gear regulating part (65) is tabular, which is provided with skewed slot (66), be used for collecting company and be connected on pin (67) on the push rod (63), this gear regulating part (65) also comprises the projection (68) that vertically extends from gear regulating part (65).

5, reciprocating saw as claimed in claim 4, it is characterized in that: this gear regulating part (65) also is evenly distributed with locating slot (69) on the side of casing (1) rear end, and on casing (1), be provided with groove (11), and in wherein containing stage clip (12) and hollow pins (13).

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