CN105643567A

CN105643567A - Impact tool

Info

Publication number: CN105643567A
Application number: CN201510845495.2A
Authority: CN
Inventors: 多田祥朗; 古泽正规; 渡边庆
Original assignee: Makita Corp
Current assignee: Makita Corp
Priority date: 2014-11-28
Filing date: 2015-11-26
Publication date: 2016-06-08
Anticipated expiration: 2035-11-26
Also published as: JP2016107394A; CN105643567B; JP6502756B2

Abstract

The present invention provides a kind of more reasonable structure for capableing of vibrationproof when carrying out impact operation. Drive motor (110) and impact structure element (140) are provided in first main structure element (101a),Handle portion (109) and battery installation section (160) are provided in second main structure element (101b),When the driving with the impact structure element (140) generates vibration,The force application part (181) relatively moves the first main structure element (101a) and the second main structure element (101b),Also,Compared with the second area (100b) far from impact structure element (140),Moving distance of the first area (100a) on long axis direction close to impact structure element (140) is longer,Long range moving area (200) are constituted by first area (100a).

Description

Impact instrument

Technical field

The present invention relates to a kind of impact instrument that machined material carries out impacting operation.

Background technology

In Japanese invention Patent Publication No 2006-175588 publication, disclosing a kind of impact instrument, this impact instrument has makes top instrument impact the impact mechanism of movement on direction of principal axis, keep the transmission case of this impact mechanism and be provided with the shell being convenient to the handle that user holds. In this impact instrument, transmission case and shell link together by two elasticity parts, make transmission case and shell impact on direction of principal axis can relative movement, drive, to suppress, the vibration impacted mechanism and bring.

[brief summary of the invention]

[problem that invention solves]

When mechanism is impacted in driving, very big vibration can be there is along impacting axle, thus make the said mechanism of transmission case and shell relative movement on impact direction of principal axis have the effect of certain suppression vibration. On the other hand, in impact instrument, also remain the vibration that this mechanism cannot suppress, also have the requirement improved further.

The present invention considers above situation, to provide the vibrationproof in real impact operation, for the purpose of the impact instrument of more reasonable structure.

[means dealt with problems]

In order to solve the problem, according to the optimal way of impact instrument involved in the present invention, it relates to drive top instrument to do translational motion to a kind of, machined material carries out impacting the impact instrument of operation. As the concrete example of the instrument of impact, it is possible to enumerate and make top instrument do translational motion, destroy the electric hammer of the machined materials such as concrete.

Impact instrument has main body portion, the handle portion of extended instrument installation portion, top, the CD-ROM drive motor with the output shaft axis intersected with long axis direction, the impact textural element being driven and having the impact axle parallel with long axis direction by the output of CD-ROM drive motor, user's assurance on the long axis direction of regulation, the battery installation section that is provided with the battery powered to CD-ROM drive motor. The direction of output shaft axis is identical with the bearing of trend of the axle of CD-ROM drive motor. Impact textural element such as to have and done straight line by drive motor and come and go the piston of motion, impact structure, the air chamber etc. that formed between this piston and impact structure. In this case, when piston moves to instrument side, top, the air of air chamber is compressed.Along with the expansion of this pressurized air, impact structure is moved and collides top instrument, thus top instrument is moved to long axis direction. In addition, when piston moves to the direction contrary with top instrument, the air of air chamber expands, and along with being compressed of this expanded air, impact structure moves to the direction contrary with top instrument. Therefore, along with reciprocating of piston, top instrument moves linearly. In addition, in impact instrument involved in the present invention, it is also possible to adopt the structure that middle component is set between impact structure and top instrument. When impact textural element has said structure, the direction that the direction impacting axle is come and gone driving with piston is identical. Impact axle parallel with long axis direction. In this case, as long as impacting axle (impacting axle axis) by region arbitrary on piston. In addition, instrument installation portion, top is provided with top instrument, it is called as centric(al) impact axis by the impact axle of top tool focus.

In addition, in the impact instrument involved by which, the force application part that main body portion has the first agent structure key element, the 2nd agent structure key element and the first agent structure key element and the 2nd agent structure key element exerted a force.

Force application part by spring structure key element, such as, can be made up of whisker. When as force application part use whisker, one end of this whisker is fixed in the first agent structure key element, the other end is fixed in the 2nd agent structure key element, and thus, the first agent structure key element and the 2nd agent structure key element can be exerted a force by this whisker.

Force application part be preferably to the first agent structure key element and the 2nd agent structure key element to make both mutually away from direction force. Thus, when the first agent structure key element and the 2nd agent structure key element move to the direction being close, can effectively prevent the first agent structure key element and the 2nd agent structure key element from colliding, it is possible to the situations such as the main body portion damaged that suppression occurs due to this kind of situation.

In addition, main body portion also has close to the first area impacting textural element, and than first area away from the 2nd region impacting textural element. For with impact textural element " close " and " away from ", such as, at any two points on direction that intersects with long axis direction in main body portion, when making be connected respectively with the point impacting regulation on textural element at these 2, according to these 2 slant ranges respectively and between the point of regulation define (slant range in short-term for " close ", when slant range is long be " away from "). That is, on this intersection direction, it is possible to using the region at some place short for the distance between the point impacting regulation on textural element as first area, using the region at the some place of the distance between the point impacting regulation on textural element as the 2nd region.

In addition, the first agent structure key element is provided with CD-ROM drive motor and impacts textural element, the 2nd agent structure key element is provided with handle portion and battery installation section.

Impact instrument involved by present embodiment, also has the vibration proof mechanism of the vibration suppressing the driving with impact textural element and produce. Vibration proof mechanism is configured to, when producing vibration with the driving impacting textural element, by force application part, make the first agent structure key element and the 2nd agent structure key element occur relative to reciprocate, thus switch the first agent structure key element and the 2nd agent structure key element away from the proximity state of state and the first agent structure key element and the 2nd agent structure key element.

For being described away from state and proximity state between the first agent structure key element and the 2nd agent structure key element. First, long axis direction sets the point of the regulation of the first agent structure key element and the point of the regulation of the 2nd agent structure key element. Using the distance between the point of regulation of this first agent structure key element of connection and the point of the regulation of the 2nd agent structure key element as first location predetermined distance. Secondly, when the first agent structure key element and the 2nd agent structure key element relative movement, using the distance between the point of the regulation of above-mentioned first agent structure key element and the point of the regulation of the 2nd agent structure key element as second position predetermined distance. And, setting first location predetermined distance is longer than second position predetermined distance. In this case, it is " away from state " that the position of the first agent structure key element and the 2nd agent structure key element that form first location predetermined distance is closed. It is " proximity state " that the position of the first agent structure key element and the 2nd agent structure key element that form second position predetermined distance is closed.

In impact instrument involved by present embodiment, first agent structure key element and the 2nd agent structure key element be moved and from when mutually switching to proximity state away from state, the miles of relative movement of first area on long axis direction is longer than the miles of relative movement of the 2nd region on long axis direction, forms long distance moving area by first area.

Impact instrument involved according to the present embodiment, adopts such structure, the distance that the first area of textural element vibration impact that makes strongly to be hit is moved than the 2nd region, forms long distance moving area by first area, it is possible to effective vibrationproof. In addition, first agent structure key element and the 2nd agent structure key element be moved and from when mutually switching to proximity state away from state, the miles of relative movement of 2nd region on long axis direction is shorter than the miles of relative movement of first area on long axis direction, forms short range moving area by the 2nd region. That is, vibration proof mechanism has long distance moving area and short range moving area, it is possible to the vibration more effectively suppressing the driving with impact textural element and produce.

In addition, other as impact instrument involved in the present invention implement mode, impact instrument has position of centre of gravity, this position of centre of gravity be battery installation section battery is installed state under position of centre of gravity, the first agent structure key element and the 2nd agent structure key element relatively rotate centered by rotation axis axis.

In the structure shown here, it is possible to rotation axis axis is arranged than impacting axle closer to position of centre of gravity. In addition, rotation axis axis ratio impact axle refers to closer to the state of position of centre of gravity, such as, assume one by position of centre of gravity and with impact the line that intersects vertically of axle, and the intersection point setting this hypothesis line and impacting between axle, in this case, distance from rotation axis axis to position of centre of gravity is shorter to the distance of above-mentioned intersection point than from rotation axis axis. By such structure, it is possible to expand the miles of relative movement between the first agent structure key element and the 2nd agent structure key element in long distance moving area (first area).

In addition, a part for the vibration produced with the driving of impact textural element, is converted into the vibration to impact in the turning direction centered by the position of centre of gravity of instrument sometimes. In this case, according to this structure, it is possible to effectively suppress the vibration of impact instrument in turning direction.

In addition, as other enforcement mode of impact instrument involved in the present invention, the first agent structure key element has the first covering region covered by the 2nd agent structure key element, and the exposed area not covered by the 2nd agent structure key element.That is, the first body region has the lamination area overlapped mutually with the 2nd body region. In this lamination area, the side covering outside forms exposed area, and a capped side forms covering region. In addition, exposed area forms the exterior contour of impact instrument, from this meaning, it is also possible to be the formation not covering other main body key elements.

In such formation, it is possible to CD-ROM drive motor is arranged on the first covering region. That is, CD-ROM drive motor is made to be protected by the 2nd body region in the inside of the instrument of impact.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to CD-ROM drive motor to be arranged on motor maintaining part. In this case, it is possible to by integrated with motor maintaining part for the first agent structure key element. First agent structure key element is integrated with motor maintaining part to be referred to, by motor maintaining part being fixed in the first agent structure key element with fixing part, when the first agent structure key element moves relative to the 2nd agent structure key element, motor maintaining part also moves relative to the 2nd agent structure key element together with the first agent structure key element. In such a configuration, it is provided that a kind of structure easily the first agent structure key element and CD-ROM drive motor assembled.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to form the axle parts for specifying rotation axis axis in motor maintaining part. In this case, by the motor maintaining part with axle parts being fixed in the first agent structure key element, form rotation axis axis, therefore can improve manufacture efficiency further.

In addition, as other enforcement mode of impact instrument involved in the present invention, the 2nd agent structure key element has the 2nd covering region covered by the first agent structure key element. In this case, it is possible to using the end edge area of the tool holder side, top of the 2nd agent structure key element as the 2nd covering region.

When impacting operation, at the dust carrying out producing by machined material when processing operation with top instrument, disperse to handle portion by top instrument. In this kind of situation, when using the region of the tool holder side, top of the 2nd agent structure key element as the 2nd covering region, there is the effect preventing these dusts from invading the 2nd agent structure key element. In this sense, it suffices to say that the 2nd covering region constitutes dust-proof mechanism with the region of the first agent structure key element covering the 2nd covering region.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to axle coincides with impacting to the direction of the first agent structure key element and the 2nd agent structure key element force to make force application part. Due to this structure, make the vibration that force application part is easier to bear the driving with impact textural element and produce, it is possible to more effectively impel the relative movement between the first agent structure key element and the 2nd agent structure key element.

In addition, axle coincides the force direction of so-called force application part with impacting, it is possible to the exemplary enumerated is exactly arrange the force application part with centric(al) impact axis coaxle. In addition, when force application part is not set to centric(al) impact axis coaxle, impact on axle as long as a part for force application part is arranged on.

In addition, about the set-up mode of force application part, it is possible to the major axis being force application part is with impacting the mutually parallel structure of axle, or the major axis of force application part and the structure impacted axle and intersect, it is also possible to be that force application part bends the setting overlapping with impacting axle.

In addition, as other enforcement mode of impact instrument involved in the present invention, impact instrument has restrictions, and this restrictions limits the first agent structure key element and the 2nd agent structure key element to the movement of direction of closing. Restrictions is formed in the inner side of main body. In this case, it is possible to prevent the collision between the first agent structure key element and the 2nd agent structure key element peripheral profile (above-mentioned exposed area). In this sense, it suffices to say that restrictions constitutes and prevents the collision collided between exposed area in the first agent structure key element and the 2nd agent structure key element from preventing structure.

In addition, as other enforcement mode of impact instrument involved in the present invention, restrictions can be held concurrently and make to guide the guide portion of the relative movement between the first agent structure key element and the 2nd agent structure key element. As guide portion, it is possible to be make the regulation region of the first agent structure key element and the 2nd agent structure key element contact, so that the structure that the first agent structure key element and the 2nd agent structure key element are slided. By making guide portion by double for restrictions, it is possible to simplify structure, be easier to the first agent structure key element and the 2nd agent structure key element be assembled simultaneously.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to arrange inlet mouth in one end of CD-ROM drive motor, arrange venting port at the other end. Air circulation dampening mechanism can also be had in addition in main body portion. Inside the main body portion that air circulation dampening mechanism is arranged between inlet mouth and venting port, restriction air circulates between inlet mouth and venting port.

In addition, in order to promote from inlet mouth suck air and discharge from venting port, it is possible to take the structure that fan is set on the transmission shaft of CD-ROM drive motor. Further, it is also possible in the 2nd agent structure key element covering CD-ROM drive motor, compared with venting port, main body inlet mouth is set closer to the region of inlet mouth, main body venting port is set in region closer to venting port compared with inlet mouth.

In the present invention, CD-ROM drive motor together with the first agent structure key element relative to the 2nd agent structure key element relative movement. Therefore, between CD-ROM drive motor and the 2nd agent structure key element covering this CD-ROM drive motor, it is formed and allows CD-ROM drive motor and the 2nd agent structure key element space in relative rotation. This space is called allows rotation space. The air sucked from inlet mouth through main body inlet mouth is heated by the heat of CD-ROM drive motor inside and is discharged by venting port. But, owing to allowing the structure of rotation space, the air discharged from venting port can be occurred not discharge from main body venting port, but allow rising in rotation space, situation about again being sucked by inlet mouth. Impact instrument involved according to the present embodiment, by having air circulation dampening mechanism, the phenomenon (the air circulation phenomenon allowing rotation space) that the air discharged from venting port can be suppressed again to be sucked by inlet mouth occurs, it is also possible to promote the cooling of CD-ROM drive motor.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to form air circulation dampening mechanism with wall segment. In this case, blocked from the air of venting port discharge to the movement of inlet mouth by this wall segment. That is, the air discharged from venting port can not return to inlet mouth again but be discharged from main body venting port. In addition, wall segment can adopt the structure extended from the 2nd agent structure key element covering CD-ROM drive motor, or from the structure that motor maintaining part extends. In this case, wall segment, it is possible to be the structure extending out integratedly with it from the regulation region of the 2nd agent structure key element or motor maintaining part. In addition, wall segment can also be the parts independent of the 2nd agent structure key element or motor maintaining part, is to be arranged on structure on the regulation region of the 2nd agent structure key element or motor maintaining part.

In addition, it is possible to the position of rotation axis axis is located in the elongated surfaces of wall segment.Wall segment has surface in opposite directions and the middle portion between this two surface. In this sense, the elongated surfaces of wall segment refers to, when assuming to extend wall segment, while mutually parallel with the extending direction of wall segment, by the face of any one in the two of wall segment surfaces or middle portion. By making the elongated surfaces of wall segment be positioned on the rotation axis axis as the first agent structure key element and the center of rotation of the 2nd agent structure key element, it is possible to reduce be positioned at position, wall segment top allow rotation space. Therefore, it is possible to more effectively block the air flowing to inlet mouth from venting port.

In addition, wall segment there is no need to be arranged to all surround the neighboring area of CD-ROM drive motor. Such as, region respective on the 2nd agent structure key element being arranged on rotation axis axis and CD-ROM drive motor, the first agent structure key element need not be set and the 2nd agent structure key element rotate needed for allow rotation space. In this region, therefore, the 2nd agent structure key element and CD-ROM drive motor can, close to arranging, thus there is no need to arrange wall segment in this region. In the case of such a construction, air circulation dampening mechanism is formed by respective region on the 2nd agent structure key element being positioned on rotation axis axis and CD-ROM drive motor.

In the structure shown here, wall segment can be arranged at the output shaft intersect vertical axis with rotation axis axis and CD-ROM drive motor and in the region overlapping with rotation axis axis.

In addition, as other enforcement mode of impact instrument involved in the present invention, the first agent structure key element and the 2nd agent structure key element, there is the overlapping region overlapped each other. Furtherly, overlapping region is formed by the first exposed area and the 2nd covering region, or is formed by the first covering region and the 2nd exposed area. That is, above-mentioned lamination area constitutes overlapping region.

Overlapping region has the flexible part arranged in any one party of the first agent structure key element and the 2nd agent structure key element. By arranging flexible part in the first agent structure key element or the 2nd agent structure key element, form part or all of covering region or exposed area. Furtherly, flexible part is arranged in any one in the first covering region, the first exposed area, the 2nd covering region, the 2nd exposed area. Flexible part can be made up of highly elastic material.

In addition, overlapping region has by sliding area, this is arranged on the opposing party of the first agent structure key element and the 2nd agent structure key element by sliding area, and, when the first agent structure key element carries out relative reciprocating with the 2nd agent structure key element, this is by sliding area and flexible part sliding contact. That is, covered in region, the 2nd exposed area in the first covering region, the first exposed area, the 2nd by sliding area, it does not have arrange in a certain region of flexible part and arrange. That is, it is located in the region that flexible part is not set by sliding area.

According to impact instrument involved in the present invention, in overlapping region, the side in the first agent structure key element and the 2nd agent structure key element arranges flexible part, the opposing party is arranged by sliding area. Therefore, the space formed between the first agent structure key element and the 2nd agent structure key element in overlapping region can be blocked by flexible part. Therefore, flexible part can suppress the dust produced in operation to invade main body portion.In this sense, it suffices to say that flexible part with constituted dust-proof mechanism by sliding area.

In addition, as other enforcement mode of impact instrument involved in the present invention, flexible part can form any one party in the first covering region and the 2nd covering region. In this case, only it is made up of any one party in the first covering region and the 2nd covering region flexible part. In addition, it is possible to by flexible part and the first agent structure key element or by flexible part and the 2nd agent structure key element, the first covering region or the 2nd covering region is formed.

In addition, as other enforcement mode of impact instrument involved in the present invention, it is possible to be made up of the 2nd agent structure key element.

In addition, as other enforcement mode of impact instrument involved in the present invention, when combining the first agent structure key element and the 2nd agent structure key element, flexible portion part is occurred elasticity to be out of shape owing to being formed by the first agent structure key element of sliding area or the 2nd agent structure key element. In this case, the first agent structure key element can have the cylindrical area of band opening, and the 2nd agent structure key element has the insertion region inserting cylindrical body when assembling from this opening. In the structure shown here, under the state completing assembling, the region inserting the 2nd agent structure key element of the first agent structure key element constitutes the 2nd covering region, and the region of the around openings covering the first agent structure key element in the 2nd covering region forms the first exposed area. In addition, cylindrical area is also received dress and impact textural element.

Impact instrument involved according to the present embodiment, during owing to the 2nd agent structure key element is inserted the first agent structure key element, flexible part deforms, and is thus easy to carry out assembling operation.

Furtherly, it is possible to the 2nd agent structure key element is divided into two portions, it is called side the 2nd agent structure key element, with another side the 2nd agent structure key element. In the structure shown here, first, the first agent structure key element and side the 2nd agent structure key element are assembled, afterwards, together with another side the 2nd agent structure key element is assembled in the first agent structure key element and side the 2nd agent structure key element. Now, such as, when flexible part being set on the insertion region of another side the 2nd agent structure key element, when the insertion region of another side the 2nd agent structure key element is inserted the opening of the first agent structure key element, flexible part contacts with the neighboring area of this opening and deforms. Therefore, when another side the 2nd agent structure key element and the first agent structure key element being assembled, it is possible to easily carry out assembling operation. In addition, the flexible part of another side the 2nd agent structure key element is made to insert cylindrical portion in a deformed state, when making another side the 2nd agent structure key element move relative to the first agent structure key element further, the flexible part that another side the 2nd agent structure key element is deformed guides and moves to the first agent structure key element side. Therefore, it is possible to together with smoothly another side the 2nd agent structure key element being assembled in the first agent structure key element. In this sense, it suffices to say that flexible part constitutes guide portion when assembling the first agent structure key element and the 2nd agent structure key element 1.

In addition, other as impact instrument involved in the present invention implement mode, and flexible part can be one-body molded with any one party in the first agent structure key element at overlapping region place and the 2nd agent structure key element.

Impact instrument involved according to the present embodiment, it is possible to easily form flexible part.

In addition, it is possible on the handle portion of the 2nd agent structure key element, the anti-slip part formed by elastomerics is set. , it is possible to adopt the structure that this anti-slip part and flexible part are formed continuously, in this case and then, it is possible to make the 2nd agent structure key element and anti-slip part and flexible part one-body molded. In the structure shown here, it is possible to easily form the 2nd agent structure key element and flexible part and anti-slip part.

[invention effect]

According to the present invention, it is provided that one is structure more reasonably, with vibrationproof in the impact operation of reality.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the impact instrument involved by the first enforcement mode of the present invention.

Fig. 2 represents in the impact instrument involved by the 2nd enforcement mode of the present invention, the sectional view of the driving mechanism of top instrument.

Fig. 3 is the sectional view representing vibration proof mechanism in this impact instrument.

Fig. 4 is the sectional view of I-I line along Fig. 3.

Fig. 5 is the sectional view of II-II line along Fig. 3.

Fig. 6 is the sectional view of III-III line along Fig. 3.

Fig. 7 is the action schematic diagram of this impact instrument.

Fig. 8 is the sectional view of IV-IV line along Fig. 7.

Fig. 9 is the schematic diagram of the impact instrument outward appearance involved by the 3rd enforcement mode representing the present invention.

Figure 10 is the schematic perspective view of the CD-ROM drive motor represented in this impact instrument.

Figure 11 is the schematic diagram of the air circulation dampening mechanism represented in this impact instrument.

Figure 12 is the schematic diagram of the impact instrument outward appearance involved by the 4th enforcement mode representing the present invention.

Figure 13 is the sectional view of V-V line along Figure 12.

Figure 14 is the schematic diagram of the aggregate erection state representing this impact instrument.

Figure 15 is the schematic diagram of the overlapping region of the impact instrument involved by the 5th enforcement mode representing the present invention.

Figure 16 is the schematic diagram of the impact instrument outward appearance involved by the 6th enforcement mode representing the present invention.

[description of reference numerals]

100: hammer bores (impact instrument); 100a: first area; 100b: the two region; 100c: position of centre of gravity; 101: main body portion (tool body); 101a: the first agent structure key element; 101a1: the first covering region; 101a2: the first exposed area (exposed area); 101aa: rear end edge; 101ab: opening; 101ac: cylindrical portion; 101b: the two agent structure key element; 101b1: the two covering region; 101b2: the two exposed area; 101b3: supporting plate; 101ba: top end opening region; 101bb: body region; 101bc: stage portion; 101bd: right side the 2nd agent structure key element; 101be: left side the 2nd agent structure key element; 101bf: insertion region; 101c: fixing part; 101d: protection parts; 103: motor shell; 104: inner casing; 104a: force application part props up bearing portion; 104b: fixing part; 105: drive housing; 109: handle (handle portion); 109a: trigger; 109b: switch; 110: electronic motor (CD-ROM drive motor); 110a: motor box (motor maintaining part); 110b: fixing part; 111: transmission shaft; 111a: output shaft axis; 111b: pinion(gear); 119: tup (top instrument); 120: movement conversion mechanism; 121: tunnel shaft; 122: crowngear; 123: rotator; 125: swing parts; 125a: bearing; 127: piston; 127a: air chamber; 129: cylinder; 140: impact textural element (impacting mechanism); 140a: centric(al) impact axis; 143: percussion hammer; 145: bump bolt; 150: rotational power transmits mechanism;151: the first gears; 153: the two gears; 159: fixture (instrument installation portion, top); 159a: tup insertion hole; 160: battery installation section; 161: series of cells (battery); 170: switching mechanism; 171: operation board; 180: vibration proof mechanism; 181: force application part; 182: rotation axis axis; 182a: the first axle props up bearing portion; 182b: the two axle props up bearing portion; 182c: axle parts; 190: restrictions; 191: the first restricted areass; 191a: front side wall portion; 191b: extension portion; 191c: rear side wall portion; 192: the two restricted areass; 192a: front side stiffening web; 192b: middle reinforced rib; 192c: rear side stiffening web; 193: sliding guide portion (guide portion); 200: long distance moving area; 210: short range moving area; 300: air circulation dampening mechanism; 301: main body inlet mouth; 302: main body venting port; 303: motor inlet mouth (inlet mouth); 304: motor venting port (venting port); 305: fan; 306: motor box inlet mouth; 307: motor box venting port; 310: wall segment; 311: the first wall segments; 311a: elongated surfaces; 312: the two wall segments; 312a: elongated surfaces; 320: rotate and allow space; 400: overlapping region; 410: flexible part setting area; 410a: front side projecture part; 410b: rear side projecture part; 411: flexible part; 411a: lug boss; 411b: depression portion; 411c: prolongation portion; 411d: protuberance; 420: by sliding area; 430: dust-proof mechanism.

Embodiment

Based on Fig. 1��Figure 16, the impact instrument involved by the first enforcement mode��the 6th enforcement mode is described. In addition, Fig. 1 is the first enforcement mode, and Fig. 2��Fig. 8 is the 2nd enforcement mode, and Fig. 9��Figure 11 is the 3rd enforcement mode, and Figure 12��Figure 14 is the 4th enforcement mode, and Figure 15 is the 5th enforcement mode, and Figure 16 is the 6th enforcement mode. Implement in the explanation of mode the first enforcement mode��six, for identical or have parts or the mechanism of said function, it may also be useful to same names and mark, and the repetitive description thereof will be omitted.

(the first enforcement mode involved in the present invention)

Based on Fig. 1, the first enforcement mode involved in the present invention is described. First enforcement mode is the detailed explanation that overall structure for the present invention carries out, and the structure implementing mode with aftermentioned 2nd enforcement mode��six is associated.

Impact instrument 100, has the instrument installation portion, top 159 installing top instrument 119 and the battery installation section 160 installing battery 161, drives top instrument 119 translational motion, carry out machined material impacting operation. Instrument installation portion 159, top adopts can the structure of installing/dismounting top instrument 119. The long axis direction in instrument installation portion, top 159 is the long axis direction of impact instrument 100. In addition, long axis direction with drive top instrument time top tool drives axis being parallel. In addition, adopt can the structure of installing/dismounting battery 161 for battery installation section 160.

For the ease of being described, being defined on long axis direction, the tip side in instrument installation portion, top 159 is front side, and the side relative with on front side of this is rear side. In addition, being defined on the intersection direction on long axis direction, the side being provided with instrument installation portion, top 159 is upside, and the side being provided with battery installation section 160 is downside. Direction be defined on drawing, right side in FIG, left side, upside, downside, be equivalent to the front side in impact instrument 100, rear side, upside and downside respectively.

Impact instrument 100 has, the output shaft axis 111a that main body portion 101, instrument installation portion, top 159 intersect with long axis direction, the impact textural element 140 also there is the CD-ROM drive motor 110 driven by the electric current of battery 161, driving by the output (power) of CD-ROM drive motor 110, the handle portion 109 held by user and battery installation section 160. Output shaft axis 111a is the bearing of trend of the transmission shaft 111 of CD-ROM drive motor 110. In addition, when battery installation section 160 is provided with battery 161, the position of centre of gravity 100c of impact instrument 100 is positioned on CD-ROM drive motor 110. Being provided with trigger 109a on handle portion 109, this trigger 109a is used for regulating cell 161 and is supplied to the magnitude of current of CD-ROM drive motor 110.

Main body portion 101 is formed primarily of the first agent structure key element 101a and the 2nd agent structure key element 101b. First agent structure key element 101a is provided with CD-ROM drive motor 110 and impacts and textural element 140, the 2nd agent structure key element 101b are provided with handle portion 109 and battery installation section 160. Also being provided with motor maintaining part 110a in first agent structure key element, this motor maintaining part 110a surrounds CD-ROM drive motor 110. According to such structure, the first agent structure key element 101a and CD-ROM drive motor 110 form one.

On the first agent structure key element 101a and the 2nd agent structure key element 101b, it is provided with the exposed area exposed in impact instrument 100 outside. In addition, also has the lamination area that the first agent structure key element 101a and the 2nd agent structure key element 101b overlaps mutually and formed. In this lamination area, the side covering outside forms exposed area, and a capped side forms covering region. In lamination area, the region covered by the 2nd agent structure key element 101b of the first agent structure key element 101a, forms the first covering region 101a1. In addition, the region covered by the first agent structure key element 101a of the 2nd agent structure key element 101b, forms the 2nd covering region 101b1. In addition, the region not covered by the 2nd agent structure key element 101b of the first agent structure key element 101a, form the first exposed area 101a2, the region not covered by the first agent structure key element 101a of the 2nd agent structure key element 101b, form the 2nd exposed area 101b2.

CD-ROM drive motor 110 is arranged on the first covering region 101a1. That is, CD-ROM drive motor 110 is covered by the 2nd exposed area 101b2.

In addition, the 2nd agent structure key element 101b has top end opening region 101ba, and it is provided with the region of opening for tip side. Using the region not belonging to top end opening region 101ba of the 2nd agent structure key element 101b as body region 101bb. The rear end edge 101aa of the first agent structure key element 101 covers the tip side end edge of top end opening region 101ba. That is, the end edge area by side, instrument installation portion 159, top of the 2nd agent structure key element 101b becomes the 2nd covering region 101b1. Because this kind of structure, it is possible to prevent from impacting in operation dust intrusion the 2nd agent structure key element 101b2 dispersed from top instrument 119 to handle portion 109. Say in this sense, comprise the region of the rear end edge 101aa of the first agent structure key element 101a, constitute dust-proof mechanism 430 with by the 2nd covering region 101b1 of this region overlay. In addition, it suffices to say that, as dust-proof mechanism 430, the apex zone of the 2nd agent structure key element 101b is the insertion region of insertion the first agent structure key element 101a.

In addition, border between top end opening region 101ba and body region 101bb is formed with stage portion 101bc.

Impact instrument 100 has vibration proof mechanism 180, the vibration that vibration proof mechanism 180 can suppress the driving with impact textural element 140 and produce. The vibration that vibration proof mechanism 180 produces by means of the driving with impact textural element 140, the first agent structure key element is made with the 2nd agent structure key element, relative reciprocating to occur, switching away from the proximity state of state and the first agent structure key element and the 2nd agent structure key element the first agent structure key element 101a and the 2nd agent structure key element 101b.

In addition, as the concrete example impacting textural element 140, it is possible to enumerate the structure being made up of the piston driven and straight line shape reciprocates by CD-ROM drive motor 110, impact structure and the air chamber that formed between piston and impact structure. In this case, when piston moves to instrument side, top, the air of air chamber is compressed. Along with this is by the expansion of pressurized air, impact structure is moved and collides with top instrument, and top instrument is moved. In addition, when piston moves to the side contrary with top instrument, the air expansion of air chamber, along with being compressed of this expanded air, impact structure moves to the side contrary with top instrument. Along with reciprocating of this kind of piston, top instrument does straight line shape along top tool drives axis and moves. In addition, middle component can be provided with between impact structure and top instrument 119. Drive the impact textural element 140 of this kind of structure, can vibrate on long axis direction. In addition, piston is done the direction gage reciprocated and is decided to be the direction impacting axle. Impact axle (impacting axle axis) by region arbitrary on piston. In addition, instrument installation portion, top 159 is provided with top instrument 119, by by the impact axle at top instrument 119 center, it is called centric(al) impact axis 140a.

Main body portion 101, has close to the first area 100a impacting textural element 140, and than first area 100a further from the 2nd region 100b impacting textural element 140. For with impact textural element 140 " close " and " away from ", such as when by any two points of main body portion 101 on the intersection direction of long axis direction respectively with when impacting that on textural element 140, regulation point is connected, defined by the slant range between corresponding points respectively. That is, on this intersection direction, the point of first area 100a and the distance impacted on textural element 140 between regulation point are short, the point of the 2nd region 100b and the distance impacted on textural element 140 between regulation point.

It is moved at the first agent structure key element 101a and the 2nd agent structure key element 101b, and from turning into proximity state away from state mutually, the miles of relative movement of first area 100a on long axis direction is longer than the miles of relative movement of the 2nd region 100b on long axis direction, forms long distance moving area 200 by first area 100a. According to this kind of structure, affect stronger first area 100a as long distance moving area 200 by being subject to impacting the vibration of textural element 140, it is possible to vibrationproof effectively. In addition, it is moved at the first agent structure key element 101a and the 2nd agent structure key element 101b, and from turning into proximity state away from state mutually, the miles of relative movement of 2nd region 100b on long axis direction is shorter than the miles of relative movement of first area 100a on long axis direction, forms short range moving area 210 by the 2nd region 100b.That is, vibration proof mechanism 180 has long distance moving area 200 and both short range moving areas 210 simultaneously, therefore, it is possible to effectively suppress to have the vibration of complicated directivity.

Herein, " proximity state " and " away from state " for the first agent structure key element 101a and the 2nd agent structure key element 101b is described. First, long axis direction is specified the point of the regulation of the first agent structure key element 101a and the point of the regulation of the 2nd agent structure key element 101b. Distance between the point of the regulation of this first agent structure key element 101a and the point of the regulation of the 2nd agent structure key element 101b is called first location predetermined distance. Next, when the first agent structure key element 101a and the 2nd agent structure key element 101b carries out relative movement, the distance between the point of the regulation of above-mentioned first agent structure key element 101a and the point of the regulation of the 2nd agent structure key element 101b is called second position predetermined distance. Further, first location predetermined distance is longer than second position predetermined distance. In this case, the pass, position of the first agent structure key element 101a and the 2nd agent structure key element 101b that form first location predetermined distance is " away from state ". Further, the pass, position of the first agent structure key element 101a and the 2nd agent structure key element 101b that form second position predetermined distance is " proximity state ".

First agent structure key element 101a is connected by force application part 181 with the 2nd agent structure key element 101b. Force application part 181, by being exerted a force by the first agent structure key element 101a and the 2nd agent structure key element 101b, makes the first agent structure key element 101a carry out relative reciprocating with the 2nd agent structure key element 101b.

Force application part 181 is made up of the parts with spring. The concrete example of whisker as force application part 181 can be enumerated. When using whisker as force application part 181, one end of this whisker is fixed on the first agent structure key element 101a, the other end is fixed on the 2nd agent structure key element 101b, therefore, the first agent structure key element 101a and the 2nd agent structure key element 101b can be exerted a force by this whisker. Be preferably, force application part 181 to make the first agent structure key element 101a and the 2nd agent structure key element 101b mutually away from direction exert a force. Therefore, when the first agent structure key element 101a and the 2nd agent structure key element 101b moves in a direction close to each other, it is possible to suppress to collide between the exterior contour of the first agent structure key element 101a and the 2nd agent structure key element 101b.

When the force direction of the first agent structure key element 101a and the 2nd agent structure key element 101b is overlapped by force application part 181 with the direction impacting axle, it is possible to the vibration effectively suppressing the driving owing to impacting textural element 140 and produce. Namely according to this kind of structure, vibration on the impact direction of principal axis that force application part 181 is easy to bear the driving along with impact textural element 140 and produces, therefore, it is possible to more effectively promote the relative movement between the first agent structure key element 101a and the 2nd agent structure key element 101b. The force direction of force application part 181 overlaps with impact axle, it is possible to the exemplary enumerated is that centric(al) impact axis 140a and force application part 181 are established on the same axis. In addition, as shown in Figure 1, even if force application part 181 is not set to coaxial with centric(al) impact axis 140a, impacts on axle as long as a part for force application part 181 is arranged on, just can obtain the effect of regulation.

In addition, the set-up mode of force application part 181 can adopt the structure making the major axis of force application part 181 parallel with impacting axle, or make the structure that the major axis of force application part 181 intersects with impact axle, or the bending force application part 181 that arranges makes its structure overlapped with impact axle.

Long distance moving area 200 such as can adopt following structure with short range moving area 210: arranges force application part 181 respectively at first area 100a and the 2nd region 100b, further, it is set as that the reactive force of the force application part 181 of force ratio the 2nd region 100b of the force application part 181 of first area 100a is weak.

In addition, long distance moving area 200 and short range moving area 210, it is also possible to relatively rotate centered by rotation axis axis 182 by the first agent structure key element 101a and the 2nd agent structure key element 101b and formed. In this case, distance between rotation axis axis 182 and first area 100a is than the distance between rotation axis axis 182 and the 2nd region 100b. In addition, rotation axis axis 182 can be set to, than impacting axle closer to the position of centre of gravity 100c impacting instrument 100, this position of centre of gravity 100c be battery installation section 160 battery 161 is installed state under the position of centre of gravity of impact instrument 100. In addition, rotation axis axis 182 ratio impact axle is represent closer to the state of position of centre of gravity 100c, such as, setting is by position of centre of gravity 100c and with when impacting the joining of the imaginary line that intersects vertically of axle and this imagination line and impact axle, from rotation axis axis 182 to the distance of position of centre of gravity 100c, shorter than from rotation axis axis 182 to the distance of above-mentioned joining.

Vibration proof mechanism 180 has restrictions 190, and the first agent structure key element 101a and the 2nd agent structure key element 101b is limited by this restrictions 190 to the movement away from direction mutually and the movement to direction close to each other. Limited to this movement away from direction by restrictions 190, it is possible to prevent the first agent structure key element 101a and the 2nd agent structure key element 101b from departing from. In addition, the movement to this direction of closing is limited by restrictions 190, it is possible to prevent the stage portion 101bc of the rear end edge 101aa and the 2nd agent structure key element 101b of the first agent structure key element 101a from colliding. That is, by restrictions 190, it is possible to prevent the damage in the main body portion 101 collided and produce because of the first agent structure key element 101a and the 2nd agent structure key element 101b. In this sense it may be said that restrictions 190 constitutes the anti-locking mechanism of collision preventing from colliding between the first exposed area 101a2 and the 2nd exposed area 101b2.

Restrictions 190 be preferably set to than impact axle be closer to upside. By this kind of structure, be easy on long distance moving area 200 to set the first agent structure key element 101a and the 2nd agent structure key element 101b mutually away from the miles of relative movement on direction.

According to said structure, by the vibration produced with the driving of impact textural element 140, the first agent structure key element 101a and the 2nd agent structure key element 101b is made to carry out the relative motion that comes and goes, it is possible to suppress to user's hand transmitting vibrations. In addition, make the first agent structure key element 101a and the 2nd agent structure key element 101b carry out relative coming and going motion, make to have the combination impacting textural element 140 and CD-ROM drive motor 110 in other words and carry out with the combination with handle portion 109 and battery installation section 160 relative coming and going motion.

In addition, in order to cool CD-ROM drive motor 110, it is possible to arrange motor inlet mouth 303 and motor venting port 304 on CD-ROM drive motor 110. Now, main body portion 101 arranges main body inlet mouth 301 and main body venting port 302. Main body inlet mouth 301 be arranged on than motor venting port 304 closer to motor inlet mouth 303, the 2nd covering region 101b1 region on. In addition, main body venting port 302 be arranged on than motor inlet mouth 303 closer to motor venting port 304, the 2nd covering region 101b1 region on.

In addition, in impact instrument 100 involved in the present invention, the first agent structure key element 101a and the 2nd agent structure key element 101b constitutes long distance moving area 200 and short range moving area 210, and carries out relative movement. Therefore, particularly in the neighboring area of CD-ROM drive motor 110, it is formed and allows that space 320 is allowed in the rotation that CD-ROM drive motor 110 carries out relative movement in the 2nd agent structure key element 101b. According to rotating the structure allowing space 320, occur the air discharged from motor venting port 304 not discharge from main body venting port 302 sometimes, but return to the phenomenon of motor inlet mouth 303 (air circulation). When there is this kind of air circulation phenomenon, it is difficult to CD-ROM drive motor 110 is effectively cooled. In the present invention, in order to prevent this kind of state of affairs, it is possible to form air circulation dampening mechanism 300 between motor inlet mouth 303 and motor venting port 304.

As the concrete example of air circulation dampening mechanism 300, it is possible to arrange, in the inner side in main body portion 101, the wall segment 310 extended in the prescribed direction. Wall segment 310 can be arranged on the first agent structure key element 101a or the 2nd agent structure key element 101b any one on. Figure 1 illustrates and projection is set in a part of motor maintaining part 110a (the first agent structure key element 101a) to form the example of wall segment 310. Between the top ends of wall segment 310 and the inside region of the 2nd agent structure key element 101b, it is formed as rotating the void allowing space 320. Therefore, by the relative movement of the first agent structure key element 101a and the 2nd agent structure key element 101b, it is possible to the top ends of prevention wall segment 310 and the inwall of the 2nd exposed area 101b2 collide. In this sense it may be said that the space between wall segment 310 and the 2nd agent structure key element 101b can be called collision free space. In addition, when arranging wall segment 310 in the 2nd agent structure key element, collision free space is formed between the top ends of wall segment 310 and the first covering region 101a1 (motor maintaining part 110a).

According to this kind of structure, even if flowing from the air of motor venting port 304 discharge to motor inlet mouth 303, the flowing of this air also can be stopped by wall segment 310. Therefore, from the air that motor venting port 304 is discharged, it is discharged to the outside of main body 101 from main body venting port 302. That is, by wall segment 310, it is possible to suppress from motor venting port 304 to the air circulation of motor inlet mouth 303.

In addition, although wall segment 310 represented in FIG only has one, but multiple wall segment 310 can also be set.

(the 2nd enforcement mode involved in the present invention)

Hereinafter, based on Fig. 2��Fig. 8, second embodiment of the invention is described. 2nd enforcement mode, compared with the first enforcement mode, has the first agent structure key element 101a and the 2nd agent structure key element 101b and carries out structure in relative rotation.

As an example of the instrument of impact, it may also be useful to the 2nd enforcement mode of the present invention is described by battery type hammer brill 100. Fig. 2 is for illustration of the sectional view hammering the mechanism involved by the percussion action and rotational action that bore 100 into shape. As shown in Figure 2, it is the portable impact instrument with the handle portion 109 held by user that hammer bores 100, its structure is, long axis direction along tup 119 drives tup 119, carry out percussion action, impact operation machined material to be carried out hammering operation etc., or tup 119 is rotated centered by its long axis direction carry out rotational action, so that machined material etc. is carried out bore operation. It is the long axis direction that hammer bores 100 that hammer bores the long axis direction of 100 driving tups 119. This long axis direction, when tup 119 is arranged on hammer brill 100, consistent with the long axis direction of tup 119. In addition, the trigger 109a operated by user it is provided with in the front side of handle portion 109. This hammer bores the example that 100 are " impact instrument " involved in the present invention, and tup 119 is an example of " top instrument " involved in the present invention, and handle portion 109 is an example of " handle portion " involved in the present invention.

(structure in main body portion)

As shown in Figure 2, hammer brill 100, is formed primarily of the main body portion 101 forming hammer brill 100 exterior contours as a whole. Tup 119 by means of the fixture 159 of tubular so that the apex zone in main body portion 101 can be arranged in the way of dismounting. Tup 119 is inserted into and is kept in the tup insertion hole 159a of fixture 159, and it relatively can reciprocate on long axis direction, and its relatively rotating in a circumferential direction is restricted. This fixture 159 is an example in " instrument installation portion, top " involved in the present invention.

As shown in Figure 2, main body portion 101 is made up of the first agent structure key element 101a and the 2nd agent structure key element 101b. This first agent structure key element 101a is an example of " the first agent structure key element " involved in the present invention, and the 2nd agent structure key element 101b is an example of " the 2nd agent structure key element " involved in the present invention.

First agent structure key element 101a is formed primarily of with lower part: receives and fills the motor shell 103 of electronic motor 110, movement conversion mechanism 120, the drive housing 105 receiving dress and impacting textural element 140 and rotational power transmission rig 150, be fixed on motor shell 103 and inner casing 104 on drive housing 105 both sides. In addition, electronic motor 110 receives dress by motor box 110a, is fixed on motor shell 103. Motor shell 103 and inner casing 104 are fixed together by fixing part 104b such as screws. Therefore, electronic motor 110 and the first agent structure key element 101a form one. In addition, motor box 110a is made up of upper side member and lower side member. By this upper side member and lower side member, electronic motor 110 is surrounded, then upper side member and lower side member are fixed by fixing part 110b such as screws. This electronic motor 110 is an example of " CD-ROM drive motor " involved in the present invention, and motor box 110a is an example of " motor maintaining part " involved in the present invention. In addition, fixture 159 is arranged on the first agent structure key element 101a.

2nd agent structure key element 101b is formed primarily of handle portion 109 and battery installation section 160, wherein, battery installation section 160 is provided with the battery 161 providing electric current to electronic motor 110. The terminal that the groove portion and carrying out with the terminal of battery 161 that battery installation section 160 is provided with on long axis direction to extend is electrically connected.Battery 161 is provided with for the guiding rail with the groove portion tabling of battery installation section 160, and the battery side terminal being connected with the terminal of battery installation section 160. This battery 161 is an example of " battery " involved in the present invention, and battery installation section 160 is an example of " battery installation section " involved in the present invention.

, in this second embodiment, in addition same with the first enforcement mode illustrated by Fig. 1, on long axis direction, the tip side of regulation fixture 159 is front side, specifies that handle portion 109 side relative with on front side of this is rear side. In addition, on the intersection direction of long axis direction, the side being provided with fixture 159 is upside, and the side being provided with battery installation section 160 is downside. Being defined in direction in Fig. 2, Fig. 3 and Fig. 7, the right side in Fig. 2, Fig. 3 and Fig. 7, left side, upside, downside are equivalent to hammer the front side of brill 100, rear side, upside, downside into shape respectively. In addition, Fig. 4 is the sectional view of I-I line along Fig. 3, and left side, right side in Fig. 4 are equivalent to hammer into shape left side, the right side of boring 100 respectively. In this sense it may be said that Fig. 2, Fig. 3 and Fig. 7 represent be hammer bore 100 right side cross-sectional view.

As shown in Figure 2, the first agent structure key element 101a, the long axis direction round tup 119 is respectively arranged with lower part, and front has drive housing 105, rear to have inner casing 104, lower section to have motor shell 103. According to such structure, electronic motor 110 is arranged on the first covering region 101a1. The long axis direction that the output shaft axis 111a of the transmission shaft 111 of electronic motor 110 bores 100 with hammer intersects. This first exposed area 101a2 is an example of " exposed area " involved in the present invention, first covering region 101a1 is an example in " the first covering region " involved in the present invention, and output shaft axis 111a is an example of " output shaft axis " involved in the present invention.

2nd agent structure key element 101b is the structure that rear is provided with handle portion 109. In addition, it is configured with top end opening region 101ba in the front side of the 2nd agent structure key element 101b, the border between top end opening region 101ba and body region 101bb is configured with stage portion 101bc. The front region of top end opening region 101ba is as the 2nd covering region 101b1. This 2nd covering region 101b1 is an example in " the 2nd covering region " involved in the present invention. Handle portion 109 is arranged on the body region 101bb at the 2nd exposed area 101b2 place.

In addition, the 2nd agent structure key element 101b is following structure, and the long axis direction along tup 119 is divided into two into two parts in left and right, and engages each other together by fixing part 101c such as screws.

(structure about impacting operation and rotation operation)

As shown in Figure 2, the rotation of electronic motor 110 exports and converts linearly operating to by movement conversion mechanism 120 and be passed to impact textural element 140, produces the surging force on the long axis direction (direction, left and right of Fig. 1) of tup 119 by this impact textural element 140. This impacts textural element 140, is an example of " impact textural element " involved in the present invention. In addition, the rotation of electronic motor 110 exports slows down by rotational power transmission rig 150 and is passed to tup 119, and this tup 119 is rotated action in a circumferential direction. The trigger 109a being arranged on handle portion 109 by pulling, operating switch is energized and drives electronic motor 110.

As shown in Figure 2, movement conversion mechanism 120 is arranged on above the transmission shaft 111 of electronic motor 110, is export the rotation of transmission shaft 111 to be converted to the movement conversion mechanism that hammer bores 100 translational motions in the longitudinal direction.Movement conversion mechanism 120 is formed primarily of with lower part, drives the rotator 123 installed on the tunnel shaft 121 of rotation, tunnel shaft 121 by the crowngear 122 engaged with the pinion(gear) 111b of transmission shaft 111, bores, at hammer, swing parts 125 that the front and back of 100 upwards swing, upwards reciprocates in the front and back that hammer bores 100 along with the swing action swinging parts 125 and as the piston 127 of tubular of drive element, the cylinder 129 of receiving dress piston 127 along with rotating of tunnel shaft 121 (rotator 123). Cylinder 129 is arranged on the rear of fixture 159, and integrated with this fixture 159. In addition, swing parts 125 to be arranged on rotator 123 by bearing 125a.

As shown in Figure 2, impact the top that textural element 140 is arranged on movement conversion mechanism 120, the rear of fixture 159, the movement conversion mechanism 120 that rotates through of electronic motor 110 converts hammer brill 100 linearly operatings in the longitudinal direction to, and impacting textural element 140 is the mechanism that this linearly operating passes to tup 119 as surging force. Impacting textural element 140 to be formed primarily of with lower part, the percussion hammer 143 as impact structure that is slidably arranged in the piston 127 of tubular, the front being arranged on percussion hammer 143 are as the bump bolt 145 of the middle component collided with percussion hammer 143. In addition, the space of the rear piston 127 of percussion hammer 143 forms air chamber 127a, and by this air chamber 127a, the sliding action of piston 127 makes the air pressure change of air, and this barometric fluctuation is passed to percussion hammer 143.

As shown in Figure 2, rotational power transmission rig 150 is arranged on the front side of movement conversion mechanism 120, is that the rotation of the electronic motor 110 transmitted from the tunnel shaft 121 of movement conversion mechanism 120 exports the mechanism being passed to fixture 159. Rotational power transmission rig 150 is formed primarily of the first gear 151 and gear reduction, first gear 151 rotates together with tunnel shaft 121, and gear reduction is formed by engaging and be arranged on multiple gears such as the 2nd gear 153 on fixture 159 (cylinder 129) with the first gear 151.

Fig. 3 is the sectional view being described by vibration proof mechanism 180 described later, and Fig. 4 is the sectional view of I-I line along Fig. 3. Specifically, Fig. 4 is the schematic diagram watched to handle portion 109 side along the cross section of the line of I-I shown in Fig. 3. In addition, for the ease of the relation that parts each in clear and definite Fig. 4 are mutual, the cross section of piston 127 is recorded.

As shown in Figure 4, first agent structure key element 101a is configured with the switching mechanism 170 that switching hammer bores the driving pattern of 100. Switching mechanism 170 has the operation board 171 operated by user, by the switching action of this operation board 171, reasonably following three kinds of driving patterns can be selected: tup 119 carries out the hammer pattern of percussion action, tup 119 carries out the drill jig formula of rotational action, and tup 119 carries out the hammer drill jig formula of percussion action and rotational action both sides. In addition, at this, the structure about switching mechanism 170 is eliminated and movement conversion mechanism 120 that the switching with switching mechanism 170 occurs and the action explanation of rotational power transmission rig 150.

(formation of vibration proof mechanism)

Based on Fig. 3, Fig. 5��Fig. 8, vibration proof mechanism 180 is described. As shown in Figure 3, vibration proof mechanism 180 has: force application part 181, its to the first agent structure key element 101a and the 2nd agent structure key element 101b to both mutually away from direction force; Rotation axis axis 182, it is that the first agent structure key element 101a and the 2nd agent structure key element 101b carry out center in relative rotation;Restrictions 190, it limits the first agent structure key element 101a and the 2nd agent structure key element 101b to the movement away from direction and the movement to direction close to each other mutually. This vibration proof mechanism 180 is an example of " vibration proof mechanism " involved in the present invention, force application part 181 is an example of " force application part " involved in the present invention, rotation axis axis 182 is an example of " rotation axis axis " involved in the present invention, and restrictions 190 is an example of " restrictions " involved in the present invention.

As shown in Figure 3, force application part 181 is made up of whisker. One end of force application part 181 is fixed on the first agent structure key element 101a, and the other end is fixed on the 2nd agent structure key element 101b. Specifically, one end of force application part 181 is fixed on force application part and props up on bearing portion 104a, this force application part props up bearing portion 104a and is arranged at, the region being positioned at drive housing 105 rear of inner casing 104, the other end of force application part 181 is fixed on the 2nd agent structure key element 101b on the supporting plate 101b3 installed. Now, the central shaft of force application part 181 and centric(al) impact axis 140a are positioned on same axis.

As shown in Figure 3, rotation axis axis 182, is set to the position of centre of gravity 100c boring 100 than centric(al) impact axis 140a closer to hammer. In addition, position of centre of gravity 100c refers to when battery installation section 160 is provided with battery 161, and hammer bores the position of centre of gravity of 100. This position of centre of gravity 100c is an example of " position of centre of gravity " involved in the present invention.

Based on Fig. 5, the detailed construction of rotation axis axis 182 is described. Fig. 5 is the sectional view of II-II line along Fig. 3. As shown in Figure 5, rotation axis axis 182 extends on the direction that the long axis direction with hammer brill 100 intersects vertically and direction, left and right. Rotation axis axis 182 is formed by with lower part, the outside protruding from motor box 110a simultaneously and the 2nd axle that props up bearing portion 182a, protrude from inside the 2nd agent structure key element 101b simultaneously and there is recess of first axle with recess prop up the recess both sides that bearing portion 182b props up the recess of bearing portion 182a with the first axle and the 2nd axle props up bearing portion 182b and sting chimeric axle parts 182c mutually. That is, rotation axis axis 182 is the straight line of the long axis direction by axle parts 182c. In addition, the top, front end that the first axle props up the top, front end of protuberance on bearing portion 182a and the 2nd axle props up protuberance on bearing portion 182b abuts against. Because the first axle props up bearing portion 182a and is arranged on motor box 110a, so alternatively axle parts 182c is formed on motor box 110a. This axle parts 182c is an example of " axle parts " involved in the present invention.

Restrictions 190 shown in Fig. 3, limit the first agent structure key element 101a and the 2nd agent structure key element 101b respectively to the movement in direction close to each other with to the mutual movement away from direction. Restrictions 190 is formed near upside compared with centric(al) impact axis 140a. That is, restrictions 190 is arranged on the position away from rotation axis axis 182. According to this structure, it is possible to increase the length of restrictions 190 on long axis direction. Therefore, the structure precision more severization of restrictions 190 itself need not be made, it is also possible to guarantee the first agent structure key element 101a and the relative movement distance of the 2nd agent structure key element 101b.

Based on Fig. 6, the concrete structure of restrictions 190 is described. Fig. 6 is the sectional view of III-III line along Fig. 3. Restrictions 190 is formed in the regulation region of the mutual coincidence of the first agent structure key element 101a and the 2nd agent structure key element 101b.The regulation region being formed with restrictions 190 is the first restricted areas 191 in the first agent structure key element 101a side, is the 2nd restricted areas 192 in the 2nd agent structure key element 101b side. In this second embodiment, the first restricted areas 191 is formed in the outside of the first covering region 101a1, and the 2nd restricted areas 192 is formed in the inner side of the 2nd exposed area 101b2.

As shown in Figure 6, first restricted areas 191 is formed at, first agent structure key element 101a extends to (the first covering region 101a1) in the part in the 2nd agent structure key element 101b along middle long axis direction, there is front side wall portion 191a, rear side wall portion 191c, extension portion 191b that is set and that extend on long axis direction between this front side wall portion 191a and rear side wall portion 191c. The lateral direction that front side wall portion 191a, extension portion 191b, rear side wall portion 191c bore 100 towards hammer is formed.

2nd restricted areas 192, is covering formation on the 2nd exposed area 101b2 of the first restricted areas 191, is having the middle reinforced rib 192b of front side stiffening web 192a, rear side stiffening web 192c, formation between stiffening web 192a and rear side stiffening web 192c on front side of this. The direction, inner side that front side stiffening web 192a and middle reinforced rib 192b and rear side stiffening web 192c bores 100 towards hammer is formed.

The top of stiffening web 192a, front side and top and the extension portion 191b of rear side stiffening web 192c abut against. Consisting of this kind, as described later, front side stiffening web 192a and rear side stiffening web 192c and extension portion 191b, constitutes the sliding guide portion 193 of the relative movement guiding the first agent structure key element 101a and the 2nd agent structure key element 101b. This sliding guide portion 193 is an example of " guide portion " involved in the present invention. In addition, middle reinforced rib 192b has the function guaranteeing the 2nd restricted areas 192 intensity. Namely, it suffices to say that the 2nd restricted areas 192 has maintenance strength structure key element.

(action about hammer bores)

Next, based on Fig. 3, Fig. 6��Fig. 8, the action that the hammer involved by the 2nd enforcement mode bores 100 is described. Represented by Fig. 3 and Fig. 6, the first agent structure key element 101a and the 2nd agent structure key element 101b is exerted a force by force application part 181, and centered by rotation axis axis 182 to mutually away from the state rotated of direction. Represented by Fig. 7, the first agent structure key element 101a and the 2nd agent structure key element 101b resists force application part 181 applied force, the state rotated to direction close to each other centered by rotation axis axis 182. In addition, Fig. 8 is the sectional view along the line of IV-IV shown in Fig. 7.

Vibration is produced along with the driving impacting textural element 140 under hammer pattern or hammer drill jig formula, vibration proof mechanism 180 makes the first agent structure key element 101a and the 2nd agent structure key element 101b under state as shown in Fig. 3 and Fig. 7, relatively rotates centered by rotation axis axis 182.

Hammer bores 100 to be had, close to the first area 100a impacting textural element 140, further from the 2nd region 100b impacting textural element 140 compared with the 100a of first area. This first area 100a is an example of " first area " involved in the present invention, and the 2nd region 100b is an example in " the 2nd region " involved in the present invention. First agent structure key element 101a and the 2nd agent structure key element 101b is centered by rotation axis axis 182 in relative rotation in situation, for the distance that the first agent structure key element 101a and the 2nd agent structure key element 101b moves on long axis direction, first area 100a mono-side is longer than the 2nd region 100b.That is, first area 100a forms long distance moving area the 200, two region 100b and forms short range moving area 210. This long distance moving area 200 is an example of " long distance moving area " involved in the present invention.

Hammer bores in 100, is long distance moving area 200 close to the first area 100a impacting textural element 140. Therefore, it is possible to the vibration more effectively suppressing the driving with impact textural element 140 and produce. Particularly because central shaft and the centric(al) impact axis 140a of force application part 181 on the same axis, so force application part 181 can bear the vibration of impact textural element 140 more effectively.

In addition, restriction mechanism 190, when the first agent structure key element 101a and the 2nd agent structure key element 101b to mutually away from direction move, as shown in Figure 6, rear side stiffening web 192c and rear side wall portion 191c abuts against. Therefore, it is possible to limit the first agent structure key element 101a and the 2nd agent structure key element 101b further to mutually away from direction move.

In addition, when the first agent structure key element 101a and the 2nd agent structure key element 101b moves to direction close to each other, as shown in Figure 8, front side stiffening web 192a and front side wall portion 191a abuts against. Therefore, it is possible to limit the first agent structure key element 101a and the 2nd agent structure key element 101b and move to direction close to each other further. Particularly, it is possible to prevent the stage portion 101bc of the rear end edge 101aa and the 2nd agent structure key element 101b of the first agent structure key element 101a shown in Fig. 2 from coming in contact.

In addition, in restrictions 190, extension portion 191b and front side stiffening web 192a and rear side stiffening web 192c contacts and forms sliding guide portion 193. When the first agent structure key element 101a and the 2nd agent structure key element 101b rotates centered by rotation axis axis 182, can by this sliding guide portion 193, preventing on the direction, left and right intersected with long axis direction, there is relative movement in the first agent structure key element 101a and the 2nd agent structure key element 101b.

That is, restrictions 190 can limit the first agent structure key element 101a and the miles of relative movement of the 2nd agent structure key element 101b in turning direction and the miles of relative movement on the bearing of trend of rotation axis axis 182.

In addition, in the region that front side stiffening web 192a and rear side stiffening web 192c moves relative to extension portion 191b, in order to make extension portion 191b not hinder the movement of front side stiffening web 192a and rear side stiffening web 192c, extension portion 191b smoothly is formed. In this sense, it suffices to say that extension portion 191b has smooth region, front side stiffening web 192a and rear side stiffening web 192c can slide relative to this smooth region. In addition, there is not the region of the obstacle hindering front side stiffening web 192a and rear side stiffening web 192c to slide, in this sense, it suffices to say that smooth region is the region not forming obstacle in meaning that of " smooth region ".

Based on above action, hammer bores 100 vibrations that can effectively suppress the driving with impact textural element 140 and produce.

(the 3rd enforcement mode involved in the present invention)

Hereinafter, based on Fig. 9��Figure 11, the 3rd enforcement mode involved in the present invention is described.

Hammer involved by 3rd enforcement mode bores 100 and bores compared with in the of 100 with the hammer involved by the 2nd enforcement mode, has air circulation dampening mechanism 300. This air circulation dampening mechanism 300 is an example of " air circulation dampening mechanism " involved in the present invention.

As shown in Figure 9, the 2nd agent structure key element 101b that hammer involved by the 3rd enforcement mode bores 100 has for sucking the main body inlet mouth 301 of outside air and discharge the main body venting port 302 of main body portion 101 inner air. Inner in main body portion 101, the first covering region 101a1 between main body inlet mouth 301 and main body venting port 302 is provided with CD-ROM drive motor 110. Thus, when discharging from the air of main body inlet mouth 301 suction to main body venting port 302, through CD-ROM drive motor 110, it is possible to cooling CD-ROM drive motor 110.

, as shown in Figure 10, in addition upper surface at CD-ROM drive motor 110 is provided with motor inlet mouth 303. The region corresponding with motor inlet mouth 303 of motor box 110a is provided with motor box inlet mouth 306. In addition, inner at CD-ROM drive motor 110, transmission shaft 111 is installed and is provided with the fan 305 driven and rotate by transmission shaft 111 simultaneously. The exterior contour region corresponding with fan 305 of CD-ROM drive motor 110 is provided with motor venting port 304, the region corresponding with motor venting port 304 of motor box 110a is provided with motor box venting port 307. This motor inlet mouth 303 is an example of " inlet mouth " involved in the present invention, and motor venting port 304 is an example of " venting port " involved in the present invention.

Therefore, from the air that main body inlet mouth 301 sucks, it is inhaled in CD-ROM drive motor 110 by motor box inlet mouth 306 and motor inlet mouth 303 due to the rotation of fan 305. Then, the air in CD-ROM drive motor 110 is discharged to main body venting port 302 by motor venting port 304 and motor box venting port 307 due to the rotation of fan 305. So, because making air by CD-ROM drive motor 110, it is possible to effectively improve the cooling performance to CD-ROM drive motor 110.

Further, as shown in figure 11, bore in 100 at the hammer involved by the 3rd enforcement mode, it is provided with the wall segment 310 as air circulation dampening mechanism 300. This wall segment 310 is an example of " wall segment " involved in the present invention. Wall segment 310 is formed to outstanding stiffening web to inward side by from the 2nd exposed area 101b2 inwall covering CD-ROM drive motor 110. Wall segment 310 surrounds CD-ROM drive motor 110, is configured with as the void based on the collision free space illustrated by Fig. 1 between the top (inner circumferential edge) of wall segment 310 and CD-ROM drive motor 110 simultaneously. Because being provided with this space, the thing that wall segment 310 and CD-ROM drive motor 110 collide when the first agent structure key element 101a and the 2nd agent structure key element 101b carries out relative movement, also can not be there is.

As shown in figure 11, wall segment 310 is made up of the first wall segment 311 and the 2nd wall segment 312. The elongated surfaces 311a of the first wall segment 311, is in away from being placed in during state on motor inlet mouth 303 (motor box inlet mouth 306) at the first agent structure key element 101a and the 2nd agent structure key element 101b. In addition, rotation axis axis 182 is positioned on the elongated surfaces 312a of the 2nd wall segment 312. Herein, elongated surfaces for wall segment 310 is described. Wall segment 310 has mutual surface in opposite directions, and the middle portion between this two surface. The definition of the elongated surfaces of wall segment 310 is, when supposing to extend wall segment 310, parallel with the extending direction of wall segment 310 and by the face of any one party in two surfaces of wall segment 310 or this two side of middle portion.

In addition, when the first agent structure key element 101a and the 2nd agent structure key element 101b is not in rotary state, the output shaft axis 111a of the CD-ROM drive motor 110 and elongated surfaces 312a of the 2nd wall segment 312 intersects vertically.That is, the elongated surfaces 312a of the 2nd wall segment 312 is positioned on rotation axis axis 182, and, intersect vertically with the output shaft axis 111a of CD-ROM drive motor 110.

In addition, as other structures, can as follows: when the first agent structure key element 101a and the 2nd agent structure key element 101b is in rotary state, the first agent structure key element 101a and the 2nd agent structure key element 101b closest to time, the output shaft axis 111a of the CD-ROM drive motor 110 and elongated surfaces 312a of the 2nd wall segment 312 intersects vertically.

In addition, boring in 100 at the hammer involved by the 3rd enforcement mode, the region being positioned on rotation axis axis 182 does not arrange the 2nd wall segment 312. That is, in the region being arranged on rotation axis axis 182, because there is no need to arrange rotation to allow space 320, therefore the 2nd agent structure key element 101b and the adjacent setting of CD-ROM drive motor 110. In this sense, it suffices to say that region respective on the 2nd agent structure key element 101b being positioned on rotation axis axis 182 and CD-ROM drive motor 110, air circulation dampening mechanism 300 is formed.

In other words, the 2nd wall segment 312 set by the following manner, is intersected vertically with output shaft axis 111a two side of rotation axis axis 182 and CD-ROM drive motor 110, and, centered by the region coincided with rotation axis axis 182. Say more specifically, 2nd wall segment 312 is made up of following two parts, a part is, the part that the region adjoined to the rear side that another the 2nd axle props up bearing portion 182b propping up, from the 2nd axle, the region that the rear side of bearing portion 182b (with reference to Fig. 5) adjoined is arranged continuously, another part is, the part that the region that the front side propping up bearing portion 182b to another the 2nd axle from the region that the front side that the 2nd axle props up bearing portion 182b is adjoined is adjoined is arranged continuously. According to this structure, it is possible to realize making the 2nd agent structure key element 101b miniaturization of covering CD-ROM drive motor 110 and CD-ROM drive motor 110 cooling these two kinds of different functions simultaneously.

In addition, the first wall segment 311 adopts the structure being enclosed in around CD-ROM drive motor 110. Void (collision free space) it is set with between first wall segment 311 and CD-ROM drive motor 110.

According to this kind of structure, it is the same with the first enforcement mode and the 2nd enforcement mode that the hammer involved by the 3rd enforcement mode bores 100, and the first agent structure key element 101a and the 2nd agent structure key element 101b relatively rotates centered by rotation axis axis 182. Therefore, it is possible to suppress vibration passing to user on hand.

And, wall segment 310 shelters from the air-flow moved from motor venting port 304 to motor inlet mouth 303, discharges from main body venting port 302 with making the Efficient air from motor venting port 304 discharge. Therefore, bore in 100 at the hammer involved by the 3rd enforcement mode, it is possible to cooling CD-ROM drive motor 110.

(the 4th enforcement mode involved in the present invention)

Hereinafter, based on Figure 12��Figure 14, the 4th enforcement mode involved in the present invention is described.

Figure 12 is the schematic appearance of the hammer brill 100 of the 4th enforcement mode. As mentioned above, first agent structure key element 101a and the 2nd agent structure key element 101b has the lamination area of coincidence mutually, in this lamination area, the side covering outside forms exposed area (the first exposed area 101a2, the 2nd exposed area 101b2), and a capped side forms coated region (the first covering region 101a1, the 2nd covering region 101b1).In this sense, it suffices to say that this lamination area forms exposed area and covers equitant overlapping region 400, region. The hammer of the 4th enforcement mode bores 100 compared with the structure that the hammer of the 3rd enforcement mode bores 100, and difference is the formation of overlapping region 400. This overlapping region 400 is an example of " overlapping region " involved in the present invention.

Figure 13 is the diagram being described overlapping region 400, represents the part in the cross section of the V-V line along Figure 12. 2nd agent structure key element 101b has flexible part 411. This flexible part 411 is because being covered by the first exposed area 101a2, and forms the 2nd covering region 101b1. This flexible part 411 is an example of " flexible part " involved in the present invention. Flexible part 411 is made up of snappiness body, one-body molded with the 2nd agent structure key element 101b.

More specifically, the 2nd agent structure key element 101b has flexible part setting area 410, and this flexible part setting area 410 comprises the front side projecture part 410a and rear side projecture part 410b that are positioned at front side apex zone. Flexible part 411 has with lower part: the lug boss 411a that arranges between this front side projecture part 410a and rear side projecture part 410b, be provided with before depression portion 411b, the protuberance 411d that abuts against from prolongation portion 411c, the top being arranged on prolongation portion 411c and the surface with the mechanism side of the first exposed area 101a2 that this depression portion 411b forward side extends of side projecture part 410a.

The driving operation of 100 is bored with hammer, vibration proof mechanism 180 makes the first agent structure key element 101a carry out relative reciprocating with the 2nd agent structure key element 101b, in this state, the surface sliding of the mechanism side of the protuberance 411d and the first exposed area 101a2 of flexible part 411 is to connecing. That is, the surface of the mechanism side of the first exposed area 101a2 constitutes by sliding area 420. This is by an example that sliding area 420 is " by sliding area " involved in the present invention.

Flexible part 411 with by sliding area 420, constitute dust-proof mechanism 430 by blocking the space formed between the first exposed area 101a2 and the 2nd covering region 101b1. Due to this dust-proof mechanism 430, it is possible to suppress hammer to bore 100 dust produced when carrying out processing operation and enter between the first exposed area 101a2 and the 2nd covering region 101b1. Therefore, in the hammer brill 100 of the 4th enforcement mode, it is possible to reduce the fault owing to main body portion 101 enters dust and occur, it is possible to extend the work-ing life that hammer bores 100.

In addition, owing to being provided with flexible part 411, it is possible to easily assemble the first agent structure key element 101a and the 2nd agent structure key element 101b.

As shown in figure 14, the 2nd agent structure key element 101b has and is divided into following two-part structure, right side the 2nd agent structure key element 101bd and left side the 2nd agent structure key element 101be. In addition, the first agent structure key element 101a has cylindrical portion 101ac, and this cylindrical portion 101ac has opening portion 101ab. This cylindrical portion 101ac is provided with impact textural element 140, rotational power transmit mechanism 150 etc.

When the first agent structure key element 101a and the 2nd agent structure key element 101b with this structure are assembled, as shown in figure 14, first, the first agent structure key element 101a and left side the 2nd agent structure key element 101be that are equipped with corresponding mechanism are assembled. Now, the flexible part 411 of left side the 2nd agent structure key element 101be inserts cylindrical portion 101ac by the opening portion 101ab of the first agent structure key element 101a.Thus, the flexible part 411 of left side the 2nd agent structure key element 101be forms the 2nd covering region 101b1. In this sense, it suffices to say that insertion region 101bf when flexible part 411 constitutes assembling. In addition, after assembling the first agent structure key element 101a and left side the 2nd agent structure key element 101be, for this first agent structure key element 101a and left side the 2nd agent structure key element 101be, the mechanism of regulation is set further.

Then, by the first agent structure key element 101a and left side the 2nd agent structure key element 101be, together with being assembled in right side the 2nd agent structure key element 101bd. First, by the flexible part 411 (insertion region 101bf) of right side the 2nd agent structure key element 101bd, insert cylindrical portion 101ac by the opening portion 101ab of the first agent structure key element 101a. Now, flexible part 411 abuts against with the opening edge edge (rear end edge 101aa) of opening portion 101ab, it is possible to deform. Consequently, it is possible to flexible part 411 is inserted cylindrical portion 101ac. Now, can while the top ends of flexible part 411 be inserted cylindrical portion 101ac, the bending stepping of going forward side by side of flexible part 411 is made to enter cylindrical portion 101ac, in this state, when right side the 2nd agent structure key element 101bd is inserted the first agent structure key element 101a, flexible part 411 serves guiding function, thus can easily carry out this assembling operation.

As mentioned above, it is necessary, the hammer of the 4th enforcement mode bores 100, the hammer in the 3rd enforcement mode bores on the 100 function bases having, and adds the dust reduction capability brought by flexible part 411 and holds easy-to-assemble function.

(the 5th enforcement mode involved in the present invention)

Hereinafter, based on Figure 15, the 5th enforcement mode involved in the present invention is described.

Figure 15 is the accompanying drawing being described for the hammer of the 5th enforcement mode bores the overlapping region 400 of 100. As shown in figure 15, the hammer in the 5th enforcement mode bores in 100, and flexible part 411 is arranged on the first agent structure key element 101a. That is, the first agent structure key element 101a is provided with the flexible part setting area 410 with front side projecture part 410a and rear side projecture part 410b. In addition, in the outside (being provided with the opposition side of mechanism) of the 2nd covering region 101b1 of the 2nd agent structure key element 101b, be provided with that the protuberance 411d for flexible part 411 slides by sliding area 420.

Adopting this structure, the hammer in the 5th enforcement mode bores in 100, bores 100 with the hammer of the 4th enforcement mode same, also has the dust reduction capability brought by flexible part 411 and hold easy-to-assemble function.

(the 6th enforcement mode involved in the present invention)

Hereinafter, based on Figure 16, the 6th enforcement mode involved in the present invention is described.

Figure 16 is the schematic appearance of the hammer brill 100 of the 6th enforcement mode. The flexible part 411 of the hammer brill 100 of the 4th enforcement mode is improved and obtains by the hammer brill 100 of the 6th enforcement mode further.

Hammer shown in Figure 16 bores in 100, is provided with protection parts 101d on the 2nd agent structure key element 101b. Hammer is bored and 100 is placed on desk or floor by user sometimes, due to material or the shape on this desk or floor, damages the 2nd agent structure key element 101b sometimes. And bore in 100 at the hammer of the 6th enforcement mode, the exterior contour of the 2nd agent structure key element is formed with protection parts 101d, therefore, it is possible to suppress to damage when being placed to place to place by hammer brill 100.

Protection parts 101d is formed by snappiness body.Hammer in the 6th enforcement mode bores in 100, and protection parts 101d and flexible part 411 are joined together to form. Therefore, it is possible to effectively by one-body molded to the 2nd agent structure key element 101b and flexible part 411 and protection parts 101d.

According to this structure, the hammer in the 6th enforcement mode bores in 100, and it is same that the hammer of the also with four enforcement mode bores 100, has the dust reduction capability brought by flexible part 411 and holds easy-to-assemble function. And, owing to defining protection parts 101d, it is possible to suppress the thing of damage the 2nd agent structure key element 101b to occur. In addition, because by one-body molded to protection parts 101d, flexible part 411 and the 2nd agent structure key element 101b, therefore the rising of production cost can be suppressed.

In addition, an example of 100 is bored as the hammer involved by present embodiment, the situation that hammer bores is illustrated, but the present invention can also be applicable to make top instrument 119 only to carry out impacting the electric hammer of operation on long axis direction, or knife saw is made to come and go motion as straight line and processed material carries out cutting reciprocating saw or the scroll saw of operation.

In addition, the protection parts 101d being arranged in main body portion 101 and formed by snappiness body is illustrated, but the textural element formed by snappiness body is not limited to protection parts 101d, such as, can also be the slip-proofing device formed on handle portion 109. Adopting the textural element formed by this snappiness body, this textural element can be one-body molded with main body portion together with flexible part 411. In this case, when the textural element formed by this snappiness body is connected with flexible part 411, it is possible to effectively carry out one-body molded further, thus can suppress the rising of manufacturing cost.

In view of the objective of the present invention, hammer involved in the present invention bores, it is possible to structure in the following ways. In addition, just each side's formula can not be combined into separately or mutually enforcement use, it is also possible to combinationally uses with invention described in claim.

(mode 1)

It is moved in above-mentioned first agent structure key element and above-mentioned 2nd agent structure key element, and from turning into proximity state away from state mutually, the miles of relative movement of above-mentioned 2nd region on long axis direction is shorter than the miles of relative movement of above-mentioned first area on long axis direction, forms short range moving area by above-mentioned 2nd region.

(mode 2)

On the intersection direction of the above-mentioned long axis direction of above-mentioned impact instrument, it is upside that regulation is provided with the side in instrument installation portion, above-mentioned top, and when specifying that being provided with above-mentioned battery installation section side is downside, above-mentioned restrictions is arranged on the upside of above-mentioned impact axle.

(mode 3)

It is formed with space part between the top ends of above-mentioned wall segment and the inwall in aforementioned body portion.

(mode 4)

By above-mentioned flexible part with above-mentioned formed dust-proof mechanism by sliding area, this dust-proof mechanism is used for suppressing to invade dust from above-mentioned overlapping region.

(mode 5)

When above-mentioned second theme textural element is inserted above-mentioned first agent structure key element, form guide portion by above-mentioned flexible part.

(implementing each textural element of mode and the corresponding relation of the textural element of the present invention)

Each textural element of present embodiment, and the textural element of the present invention and the relation invented between specific item as follows. Certainly, each textural element in present embodiment, just relevant with the specific item of the present invention one implements the example of structure, and each textural element of the present invention is not limited to this.

Hammer bores the example that 100 are " impact instrument " involved in the present invention. Tup 119 is an example of " top instrument " involved in the present invention. Handle portion 109 is an example of " handle portion " involved in the present invention. Fixture 159 is an example in " instrument installation portion, top " involved in the present invention. First agent structure key element 101a is an example of " the first agent structure key element " involved in the present invention. 2nd agent structure key element 101b is an example of " the 2nd agent structure key element " involved in the present invention. Electronic motor 110 is an example of " CD-ROM drive motor " involved in the present invention. Motor box 110a is an example of " motor maintaining part " involved in the present invention. Battery 161 is an example of " battery " involved in the present invention. Battery installation section 160 is an example of " battery installation section " involved in the present invention. First exposed area 101a2 is an example of " exposed area " involved in the present invention. First covering region 101a1 is an example in " the first covering region " involved in the present invention. Output shaft axis 111a is an example of " output shaft axis " involved in the present invention. 2nd covering region 101b1 is an example in " the 2nd covering region " involved in the present invention. Impact the example that textural element 140 is " impact textural element " involved in the present invention. Vibration proof mechanism 180 is an example of " vibration proof mechanism " involved in the present invention. Force application part 181 is an example of " force application part " involved in the present invention. Rotation axis axis 182 is an example of " rotation axis axis " involved in the present invention. Restrictions 190 is an example of " restrictions " involved in the present invention. Position of centre of gravity 100c is an example of " position of centre of gravity " involved in the present invention. Axle parts 182c is an example of " axle parts " involved in the present invention. Sliding guide portion 193 is an example of " guide portion " involved in the present invention. First area 100a is an example of " first area " involved in the present invention. 2nd region 100b is an example in " the 2nd region " involved in the present invention. Long distance moving area 200 is an example of " long distance moving area " involved in the present invention. Air circulation dampening mechanism 300 is an example of " air circulation dampening mechanism " involved in the present invention. Motor inlet mouth 303 is an example of " inlet mouth " involved in the present invention. Motor venting port 304 is an example of " venting port " involved in the present invention. Wall segment 310 is an example of " wall segment " involved in the present invention. Overlapping region 400 is an example of " overlapping region " involved in the present invention. Flexible part 411 is an example of " flexible part " involved in the present invention. By the example that sliding area 420 is " by sliding area " involved in the present invention.

Claims

1. an impact instrument, drives top instrument to make translational motion and machined material carries out impacting operation, it is characterised in that,

Have:

Main body portion;

Instrument installation portion, top, it extends along the long axis direction of regulation;

CD-ROM drive motor, it has the output shaft axis intersected with described long axis direction;

Impacting textural element, it is driven by the output of described CD-ROM drive motor, and, there is the impact axle mutually parallel with described long axis direction;

Handle portion, it is held for user;

Battery installation section, it is provided with the battery for described CD-ROM drive motor supplies electric current,

Described main body portion have the first agent structure key element, the 2nd agent structure key element, to described first agent structure key element with described 2nd agent structure key element force force application part, close to the first area of described impact textural element and compared with described first area away from the 2nd region of described impact textural element

In described first agent structure key element, it is provided with described CD-ROM drive motor and described impact textural element,

In described 2nd agent structure key element, it is provided with described handle portion and described battery installation section,

And described impact instrument also has vibration proof mechanism, the vibration that this vibration proof mechanism produces for suppressing the driving with described impact textural element,

Described vibration proof mechanism is configured to: when producing vibration in the driving with described impact textural element, by described force application part, make described first agent structure key element, with described 2nd agent structure key element, relative reciprocating occur, thus switch described first agent structure key element and described 2nd agent structure key element away from the proximity state of state and described first agent structure key element and described 2nd agent structure key element

Described first agent structure key element and described 2nd agent structure key element be moved and from when mutually switching to proximity state away from state, the miles of relative movement of described first area on described long axis direction is longer than the miles of relative movement of described 2nd region on described long axis direction, forms long distance moving area by described first area.

2. impact instrument according to claim 1, it is characterised in that,

Having position of centre of gravity, described position of centre of gravity refers to the position of centre of gravity under the state that described battery installation section is equipped with battery,

Described first agent structure key element and described 2nd agent structure key element relatively rotate centered by rotation axis axis,

Compared with described impact axle, described rotation axis axis is closer to described position of centre of gravity.

3. impact instrument according to claim 1, it is characterised in that,

Described first agent structure key element, has the first covering region covered by described 2nd agent structure key element, and the exposed area not covered by described 2nd agent structure key element.

4. impact instrument according to claim 3, it is characterised in that,

Described CD-ROM drive motor is arranged on described first covering region.

5. impact instrument according to claim 1, it is characterised in that,

Described CD-ROM drive motor is configured at motor maintaining part, and described first agent structure key element and described motor maintaining part are integrated.

6. impact instrument according to claim 5, it is characterised in that,

For specifying the axle parts of described rotation axis axis, it is formed in described motor maintaining part.

7. impact instrument according to claim 1, it is characterised in that,

Described 2nd agent structure key element has the 2nd covering region covered by described first agent structure key element.

8. impact instrument according to claim 1, it is characterised in that,

The direction of the direction that described first agent structure key element and described 2nd agent structure key element are exerted a force by described force application part and described impact axle coincides.

9. impact instrument according to claim 1, it is characterised in that,

Having restrictions, the described restrictions described first agent structure key element of restriction and described 2nd agent structure key element are to the movement of direction of closing, and described restrictions is arranged at the inner side in described main body portion.

10. impact instrument according to claim 9, it is characterised in that,

Described restrictions, also double does the guide portion relative movement of described first agent structure key element and described 2nd agent structure key element guided.

11. impact instruments according to claim 1, it is characterised in that,

Described CD-ROM drive motor has the inlet mouth being arranged at its one end and the venting port being arranged at its other end, and described main body portion has air circulation dampening mechanism,

Described air circulation dampening mechanism, is arranged on the inner side in described main body portion, between described inlet mouth and described venting port, and, it suppresses air to circulate between described inlet mouth and described venting port.

12. according to impact instrument according to claim 11, it is characterised in that,

Described air circulation dampening mechanism is made up of wall segment, and described rotation axis axis is positioned in the elongated surfaces of described wall segment.

13. impact instruments according to claim 7, it is characterised in that,

Described first agent structure key element has the overlapping region overlapped mutually with described 2nd agent structure key element,

Described overlapping region, there is flexible part and by sliding area, wherein, described flexible part is arranged in any one party in described first agent structure key element and described this two side of 2nd agent structure key element, on described the opposing party being arranged on by sliding area in described first agent structure key element and described this two side of 2nd agent structure key element, when described first agent structure key element carries out relative reciprocating with described 2nd agent structure key element, described flexible part is being slided by sliding area.

14. impact instruments according to claim 13, it is characterised in that,

Described flexible part forms any one party in described first covering region and described 2nd covering this two side of region.

The 15. impact instruments according to claim 13 or 14, it is characterised in that,

Described flexible part is arranged in described 2nd agent structure key element.

16. according to impact instrument described in any one in claim 13��15, it is characterised in that,

When described first agent structure key element and described 2nd agent structure key element are assembled, be formed described by the described first agent structure key element of sliding area or described 2nd agent structure key element make described flexible part produce elasticity be out of shape.

The 17. impact instruments according to any one of claim 13��16, it is characterised in that,

Described flexible part, one-body molded with any one party in the described first agent structure key element at described overlapping region place and described this two side of 2nd agent structure key element.