CN204700847U - Electric hammer percussion drill - Google Patents
Electric hammer percussion drill Download PDFInfo
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- CN204700847U CN204700847U CN201520088544.8U CN201520088544U CN204700847U CN 204700847 U CN204700847 U CN 204700847U CN 201520088544 U CN201520088544 U CN 201520088544U CN 204700847 U CN204700847 U CN 204700847U
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- electric hammer
- percussion drill
- hammer percussion
- tool heads
- fuselage
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Abstract
The utility model discloses a kind of electric hammer percussion drill, this electric hammer percussion drill comprise fuselage, the motor be arranged in fuselage, be connected to fuselage hand and to be installed on fuselage and to drive the tool heads being connected to motor.This electric hammer percussion drill also comprises: tool heads fixture, this tool heads fixture comprise arrange sleeve, locking circle, control loop and C shape circle; Arrange sleeve to enclose by screw thread be connected with locking; Locking circle engages by having the first irregular peripheral shape with between control loop; Control loop engages by having the second irregular peripheral shape between enclosing with C shape.Therefore, the tool heads fixture that the electric hammer percussion drill in the utility model uses need not use external instrument such as spanner just can carry out the installation of tool heads and unload, and facilitates operation.
Description
Technical field
The utility model relates to a kind of Portable electric instrument, particularly a kind of electric tool that can provide electric hammer function and electric drill function.
Background technology
Electric drill is widely used in the field such as industrial production and interior decoration as a kind of common electric hand tool.Common electric drill is suitable for holing on the material of the flexible relative such as such as timber, foam, composite plate, and drill bit does not have additional impact function in this case.On the other hand, electric hammer percussion drill is mainly used to hole in the hard objects such as concrete, floor, brick wall and stone material.Impingement electric drill is on the basis of common electric drill, add driving mechanism in the past strike-on hit the top of drill bit, strike function is provided.Because the drill bit of impingement electric drill also creates the faster reciprocal motion (frequent impact) in the direction along electric drill bar while rotating, so it can punch fast on the materials such as the large cement concrete of fragility and stone material.
The front fuselage of electric hammer percussion drill is configured with the tool heads fixture for clamping dissimilar tool heads usually, and such tool heads comprises carpenter's auger, cement brill, electric hammer drill etc.Common tool heads fixture all needs to use the external threaded spanner of tool to be fixed or releasing appliance head by the locking cover on screwing tool fixture head.But such tool heads fixture Problems existing is just to need to configure external spanner, not only add complete machine cost but also spanner is easy to lose, thus cause the inconvenience in use.
Utility model content
Therefore, need a kind of electric hammer percussion drill, it can lock when not needing the installation that user just can be allowed when using external tool to carry out tool heads easily and unlock, with easy to use.
In first of the present utility model, provide a kind of electric hammer percussion drill, comprise fuselage, the motor be arranged in fuselage, be connected to fuselage hand and to be installed on fuselage and to drive the tool heads being connected to motor.This electric hammer percussion drill also comprises: tool heads fixture, this tool heads fixture comprise arrange sleeve, locking circle, control loop and C shape circle; Arrange sleeve to enclose by screw thread be connected with locking; Locking circle engages by having the first irregular peripheral shape with between control loop; Control loop engages by having the second irregular peripheral shape between enclosing with C shape.
Preferably, the first irregular peripheral shape engagement or the second irregular peripheral shape engagement are for having the close-shaped of long end and short end.
More preferably, the close-shaped side face in its long end circumferentially shape, and the side face linearly shape of short end.
In one embodiment, arranging in sleeve and be also provided with ring spring, being biased into a predetermined position of rotation for this being arranged sleeve.
Accompanying drawing explanation
Can do further to understand to performance of the present utility model and advantage with reference to the remaining part of this description and accompanying drawing; In these accompanying drawings, the label of same assembly is identical.
Fig. 1 is the side view of the electric hammer percussion drill in an embodiment in the utility model.
Fig. 2 shows the feature of the tool heads fixture of electric hammer percussion drill in Fig. 1.
Fig. 3 a shows the feature of the mode selection knob assembly of electric hammer percussion drill in Fig. 1.
Fig. 3 b shows the feature of the mode selection knob assembly of the electric hammer percussion drill according to another embodiment in the present invention.
Fig. 4 a-Fig. 4 b is that the explosive decomposition figure of the electric hammer percussion drill in Fig. 1, this explosive decomposition figure are divided and be placed in Fig. 4 a-Fig. 4 b respectively.
Fig. 5 is the side view of the electric hammer percussion drill in another embodiment in the utility model.
Fig. 6 shows the feature of the tool heads fixture of electric hammer percussion drill in Fig. 5.
Fig. 7 a-Fig. 7 b is that the explosive decomposition figure of the electric hammer percussion drill in Fig. 5, this explosive decomposition figure are divided and be placed in Fig. 7 a-Fig. 7 b respectively.
Detailed description of the invention
The structure and characteristics of the pattern switching mechanism of electric hammer percussion drill in enforcement of the present utility model is described in detail below with reference to Figure of description.Can also other different benefit of providing of apparent each embodiment of the present utility model and advantage from following describing.
A kind of electric hammer percussion drill according to first embodiment of the present utility model is shown in Fig. 1.This electric hammer percussion drill comprises fuselage 44, be positioned at the main handle 4 tool heads fixture 2 of front fuselage, tool heads fixture 2 fuselage 44 being below connected to demountable assist handle 1 and being positioned at fuselage tail end.In the side of main handle 4, also there is starting switch 6.Mode selection knob assembly 3 is configured with in the side of fuselage 44.The power line 5 being configured with attaching plug is connected with in the bottom of main handle 4.Therefore what show in Fig. 1 is that a kind of alternating current that uses is as the electric hammer percussion drill of power supply.The parts of above-mentioned electric hammer percussion drill are all common in existing electric hammer percussion drill, therefore no longer describe in detail here.Shown in Fig. 2 is the zoomed-in view of tool heads fixture 2 in Fig. 1.
The feature of the mode selection knob assembly 3 on the fuselage of the electric hammer percussion drill in Fig. 1 is then shown in Fig. 3 a, wherein this knob assembly 3 visible comprises and is roughly circle and there is the knob 7 of jut on surface, and this jut is provided for user can apply torsion to rotate this knob 7 with hand.The jut of knob 7 also has leg-of-mutton cue mark, to indicate the mode position at present mode selection knob assembly 3.At the fuselage sections of the periphery of knob 7, stamped several marks 8,9,10,11, thus the internal mechanism of mode selection knob assembly 3 makes electric hammer percussion drill be operated in relevant position when knob 7 points to some marks.Wherein, mark 8 representatives and only rotate the pattern of not impacting; Mark 9 represents the pattern of not only impacting but also rotating; The pattern of not rotating only is impacted in mark 11 representative; Mark 10 represents the pattern of reverse impact.
Their labels in Fig. 4 a-Fig. 4 b of inner body contrast of electric hammer percussion drill in Fig. 1 shown in Fig. 4 a-Fig. 4 b are listed following:
12 left casing 13 fan shroud 14 gear-box drain pan 15 back bushes
16 back bush packing ring 17 bearing 18 oil catch 19 packing rings
20 NBR sealing ring 21 gearhousing 22 screw 23 NBR support
Body
24 locking bushing 25 C shapes enclose 26 ball supporting pad 27 balls
Circle
28 ball gripper shoe 29 volute spring 30 axle 31 punching press packing rings
32 second level gear 33 O shapes enclose 34 clutch base portion 35 ball bearings
36 balls 37 keep C shape to enclose 38 screws 39 for cylindrical
The packing ring of screw
40 locking packing ring 41 O shapes are enclosed 42 O shapes and are enclosed 43 sleeves
83 power line 45 NBR support 46 packing ring 47 C shape circles
48 anvil 49 O shapes enclose 50 impulse member 51 impulse member O shapes
Circle
52 ventilation felt 53 cylindrical spiral shell 54 switch 55 electric capacity
Silk
Solid 57 ball bearing 58 motor 59 screws of 56 motor bearings
Determine device
60 ball bearing 61 packing ring 62 screw 63 first order gears
64 motor shaft 65 oscillation bearing 66 wobble drive connect 67 springs
Connect device
68 second pinion 69 second level little 70 keep circle 71 lockplate
Hookup gear
75 screws are revolved in 72 spring 73 needle bearing 74 model selections
Button component
76 forward button 77 right handles shell 78 carbon brush component 79 pressing plates
Body
80 screw 81 magnetic bead 82 elastic sleeves
The pattern switching mechanism of electric hammer percussion drill in wherein the present embodiment is shown in Fig. 4 a.Wherein, wobble drive connector 66 is also called the impact coupling piece of powder coupling, and the second pinion hookup 68 is also called the rotation coupling piece of powder coupling.Wobble drive connector 66 is connected to oscillation bearing 65 separably, and the second pinion hookup 68 is connected to second level pinion 69 equally separably.User is in use by push-turn key button, then turning knob just can control the clutch of wobble drive connector 66 and oscillation bearing 65 respectively, and second clutch of pinion hookup 68 and second level pinion 69, thus realize the change of electric hammer percussion drill mode of operation.Second pinion hookup 68 and wobble drive connector 66 all can primary importances on the length direction of each comfortable motor shaft 64 respectively and moving between the second place.For the second pinion hookup 68, in its primary importance, the second pinion hookup 68 engages the composition surface of second level pinion 69, thus this second level pinion 69 of the rotating drive of motor shaft 64 rotates simultaneously; In the second place, the second pinion hookup 68 does not engage the described composition surface of this second level pinion 69, thus the rotation of motor shaft 64 can not drive this second level pinion 69 to rotate simultaneously.This second level pinion 69 is rotated to drive drill bit by the drill bit of a series of transmission mechanism to electric hammer percussion drill.Equally, for wobble drive connector 66, in its primary importance, wobble drive connector 66 engages the composition surface of oscillation bearing 65, thus this oscillation bearing 65 of the rotating drive of motor shaft 64 rotates simultaneously, and the rotating drive that the exocentric structure of oscillation bearing 65 itself makes it be subject to can change the oscillating motion in another dimension into.In the second place, wobble drive connector 66 does not engage the described composition surface of this oscillation bearing 65, thus the rotation of motor shaft 64 can not drive this oscillation bearing 65 to rotate simultaneously.This oscillation bearing 65 is connected to drill bit, and the oscillating motion of above-mentioned oscillation bearing 65 carries out the reciprocal percussion action in front and back by driving drill bit.
When the patten transformation knob 7 in Fig. 3 a is turned to the position of mark 8, now wobble drive connector 66 disengaging is engaged with oscillation bearing 65, and therefore oscillation bearing 65 can not be driven, thus cannot produce impact effect.On the other hand, now corresponding with the second pinion hookup 68 lever (not shown) makes the second pinion hookup 68 and second level pinion 69 engage, thus second level pinion 69 can be made bit by driving.Therefore, now electric hammer percussion drill is in the mode of operation that only rotation do not impact.
When the patten transformation knob 7 in Fig. 3 a is turned to the position of mark 11, now the second pinion hookup 68 disengaging is engaged with second level pinion 69, and therefore second level pinion 69 can not be driven, thus cannot produce rotating effect.On the other hand, now corresponding with wobble drive connector 66 lever (not shown) makes wobble drive connector 66 and oscillation bearing 65 engage, thus oscillation bearing 65 can be made drill bit produce ballistic motion by driving.Therefore, now electric hammer percussion drill is in the mode of operation that only impact do not rotate.
When the patten transformation knob 7 in Fig. 3 a is turned to the position of mark 9, the second pinion hookup 68 engages with second level pinion 69, and wobble drive connector 66 also engages with oscillation bearing 65.Therefore, second level pinion 69 and oscillation bearing 65 drive drill bit to produce rotation and impact effect simultaneously.Therefore, now electric hammer percussion drill is in the mode of operation of not only impacting but also rotating.
In addition, as shown in Fig. 2 and Fig. 4 a, the tool heads fixture 2 of the electric hammer percussion drill in the present embodiment have employed without key design (keyless), thus user just can freely load onto or unload different tool heads to carry out boring for different materials object or hammering operation when not needing to use extra spanner.Specifically, the front end of axle 30 as is shown in fig. 4 a has the groove of a circumference, and this groove is suitable for ball 27 wherein.Ball 27 and corresponding ball gripper shoe 28 thereof, ball keep packing ring 26 etc. can moving axially together along axle 30, and such movement is realized with hand propelled locking bushing 24 by user.When user promotes locking bushing 24 toward the direction with hand, during the groove that ball 27 is fallen in axle 30, the diameter of C shape circle 25 is oppressed to be reduced, thus the tool heads promptly inserted makes it be locked.When user with hand towards another direction promote locking bushing 24 time, ball 27 is made to leave groove in axle 30, the diameter of C shape circle 25 no longer oppressedly reduces, thus the tool heads (not shown) locking to inserting is removed, and this tool heads thus can be replaced.
In another embodiment of the present invention, the mode selection knob assembly 3 on the fuselage of electric hammer percussion drill also can have different structures.As shown in Figure 3 b, knob assembly 3 ' comprises and is roughly circle and there is the knob 7 ' of jut on surface, and this jut is provided for user can apply torsion to rotate this knob 7 ' with hand.The jut of knob 7 ' also has leg-of-mutton cue mark, to indicate the mode position at present mode selection knob assembly 3 '.With the mode selection knob assembly 3 in Fig. 3 a unlike, at the fuselage sections of the periphery of knob 7 ', only stamped two mark 8 ', 9 '.Wherein, mark 8 ' representative and only rotate the pattern of not impacting; Mark 9 ' represents the pattern of not only impacting but also rotating.Such mode selection knob assembly 3 ' is applicable to some electric hammer percussion drill not needing independent electric hammer pattern, and when employing such mode selection knob assembly 3 ', the inner clutch mechanism of this electric hammer percussion drill also has respective change, here repeats no more.
Fig. 5-Fig. 7 b shows the structure of electric hammer percussion drill according to another embodiment of the invention.Wherein, be similar to shown in Fig. 1, this electric hammer percussion drill in Fig. 5-7b comprises fuselage 144, be positioned at the main handle 104 tool heads fixture 102 of front fuselage, tool heads fixture 102 fuselage 144 being below connected to demountable assist handle 101 and being positioned at fuselage tail end.In the side of main handle 104, also there is starting switch 106.Mode selection knob assembly 103 is configured with in the side of fuselage 1044.The power line 105 being configured with attaching plug is connected with in the bottom of main handle 104.
Their labels in Fig. 4 a-4b of inner body contrast of electric hammer percussion drill in Fig. 1 shown in Fig. 7 a-Fig. 7 b are listed following:
115 back bushes at the bottom of 112 left casing 113 fan shroud 114 gear-boxes
Shell
116 back bush packing ring 117 bearing 118 oil catch 119 packing rings
120 NBR sealing ring 121 gearhousing 122 screws 185 keep C shape to enclose
Body
186 punching press packing ring 187 volute spring 188 adapter 189 balls
190 collar 191 stopper ring 130 axle 131 punching press packing rings
132 second level gear 133 O shapes enclose 134 clutch base 135 ball bearings
Portion
136 balls 137 keep C shape 138 screw 139 for cylindrical
The packing ring of circle screw
140 locking packing ring 141 O shapes are enclosed 142 O shapes and are enclosed 143 sleeves
192 keep C shape to enclose 145 NBR supports 146 packing ring 147 C shape circles
148 anvil 149 O shapes enclose 150 impulse member 151 impulse member O shapes
Circle
152 ventilation felt 153 cylindrical spiral shell 154 switch 155 electric capacity
Silk
Solid 157 ball bearing 158 motor 159 screws of 156 motor bearings
Determine device
160 ball bearing 161 packing ring 162 screw 163 first order gears
164 motor shaft 165 oscillation bearing 166 wobble drive 167 springs
Connector
168 second pinion 169 second level little 170 keep circle 171 lockplate
Hookup gear
172 spring 173 needle bearing 174 model selection 175 screws
Knob assembly
176 forward button 177 right handles shell 178 carbon brush component 179 pressing plates
Body
180 screw 181 magnetic bead 182 elastic sleeve 183 power lines
193 ball 194 ball 195 control loop 196 shims
197 locking circles 198 arrange sleeve 199 annulus 200 sheet rubber
201 O shapes enclose 202 retaining rings
Similar in the power section of the electric hammer percussion drill shown in Fig. 5-Fig. 7 b and clutch and above-mentioned Fig. 1-Fig. 2 and Fig. 4 a-Fig. 4 b, here repeats no more.But, and above-described embodiment have employed another design unlike the tool heads fixture of the electric hammer percussion drill in Fig. 5-Fig. 7 b.As shown in Figure 7b, the tool heads fixture of the electric hammer percussion drill in the present embodiment also uses without key design.But, and above-described embodiment unlike, be not complete by axially promoting locking cover to tool heads the locking and unlocking when being installed to tool heads fixture in fig .7b, but completed by circumferential twist-lock cover.Specifically, the sleeve 198 that arranges as shown in Figure 7 a is designed to allow user rotate this with hand and arranges sleeve 198.In the interior arranging sleeve 198, there is internal thread (not shown), and the outer peripheral face locking circle 197 is provided with external screw thread.The rotation of sleeve 198 is set therefore, it is possible to drive locking circle 197 to rotate together.The rotation of locking circle 197 makes control loop 195 also rotate.The outer peripheral face of control loop 195 and shim 196 is not circular as shown in the figure, but has the irregular close-shaped of long end and short end.Wherein, control loop 195 and shim 196 the outer peripheral face circumferentially shape of its long end, and the outer peripheral face linearly shape of short end.Accordingly, the internal circumferential surface of control loop 195 is also have long end and short end close-shaped, and this internal circumferential surface holds C shape circle 192.The inner peripheral surface circumferentially shape of the long end of this internal circumferential surface, and the inner peripheral surface linearly shape of short end.When control loop 195 turns to different angles, in the long end that C shape circle 192 is accommodated in the interior weekend of control loop 195 or in short end.When user's rotary setting sleeve 198 make C shape enclose 192 fall into the long end of the internal circumferential surface of control loop 195 time, C shape circle diameter do not have be forced to reduce, the tool heads therefore now inserted is not locked, and now tool heads can be replaced.When user's rotary setting sleeve 198 makes C shape circle 192 fall into the short end of the internal circumferential surface of control loop 195, the diameter of C shape circle 192 is forced to reduce, and the tool heads (not shown) therefore now inserted is by C shape circle 192 locking.In addition, the inner peripheral surface that sleeve 198 is set as shown in figure 7b is also provided with ring spring 199, thus makes to arrange the latched position that sleeve 198 is biased to corresponding tool heads when not having external force to interfere, tool heads can not be dropped out without reason.
Claims (4)
1. an electric hammer percussion drill, comprise fuselage, the motor be arranged in fuselage, be connected to fuselage hand and to be installed on fuselage and to drive the tool heads being connected to motor, it is characterized in that, this electric hammer percussion drill also comprises:
Tool heads fixture, this tool heads fixture comprise arrange sleeve, locking circle, control loop and C shape circle; Arrange sleeve to enclose by screw thread be connected with locking; Locking circle engages by having the first irregular peripheral shape with between control loop; Control loop engages by having the second irregular peripheral shape between enclosing with C shape.
2. electric hammer percussion drill as claimed in claim 1, is characterized in that, described first irregular peripheral shape engagement or the second irregular peripheral shape engagement are for having the close-shaped of long end and short end.
3. electric hammer percussion drill as claimed in claim 2, is characterized in that, the described close-shaped side face in its long end circumferentially shape, and the side face linearly shape of short end.
4. electric hammer percussion drill as claimed in claim 1, it is characterized in that, described setting in sleeve is also provided with ring spring, is biased into a predetermined position of rotation for this being arranged sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088544.8U CN204700847U (en) | 2015-02-06 | 2015-02-06 | Electric hammer percussion drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088544.8U CN204700847U (en) | 2015-02-06 | 2015-02-06 | Electric hammer percussion drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204700847U true CN204700847U (en) | 2015-10-14 |
Family
ID=54280482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088544.8U Active CN204700847U (en) | 2015-02-06 | 2015-02-06 | Electric hammer percussion drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204700847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153965A (en) * | 2018-02-14 | 2019-08-23 | 苏州宝时得电动工具有限公司 | Handheld tool |
-
2015
- 2015-02-06 CN CN201520088544.8U patent/CN204700847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153965A (en) * | 2018-02-14 | 2019-08-23 | 苏州宝时得电动工具有限公司 | Handheld tool |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |