CN208880631U - Pattern switching mechanism and its electric tool - Google Patents
Pattern switching mechanism and its electric tool Download PDFInfo
- Publication number
- CN208880631U CN208880631U CN201820638993.9U CN201820638993U CN208880631U CN 208880631 U CN208880631 U CN 208880631U CN 201820638993 U CN201820638993 U CN 201820638993U CN 208880631 U CN208880631 U CN 208880631U
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- transfer strip
- cantilever
- switching mechanism
- pattern switching
- swivel sleeve
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Abstract
The utility model discloses one mode switching mechanism and its electric tool, the pattern switching mechanism includes: the input shaft being driven by motor, swivel sleeve, guide rod, the first transfer strip and the second transfer strip and operating parts being in U-shape, swivel sleeve is sheathed on input shaft, first transfer strip, second transfer strip is successively sheathed on the guide rod by left-to-right, and first transfer strip the second cantilever that has driving swivel sleeve mobile, there is second transfer strip driving dress to change the mobile third cantilever of sleeve, operating parts has cam pin, pattern switching mechanism further includes the tension spring being held on the first transfer strip and the second transfer strip respectively, and the cam pin is held between second cantilever and third cantilever, when pattern switching, the cam pin drives the first transfer strip or the second transfer strip that swivel sleeve is driven to move axially along input shaft.The pattern switching mechanism is conducive to simplify installation, save the cost.
Description
[technical field]
The utility model relates to field of power tools, in particular to one mode switching mechanism and its electric tool.
[background technique]
Electric tool such as electric hammer, user carry out selecting different electric hammer operating modes according to different usage scenarios.
Such as Chinese utility model is announced in No. CN202318260U and discloses a kind of transmission interpreter of electric tool
Structure, comprising: guide rod；First washer, including two first baffles and at least one first cantilever are provided on first baffle and wear
Hole, the first washer are slidably mounted on guide rod by the perforation on two first baffles, and the first cantilever is slided with the first washer；The
Two washers, including two second baffles and at least one second cantilever, are provided with perforation on second baffle, the second washer by
Perforation on two second baffles is slidably mounted on guide rod, and the second cantilever is slided with the second washer；Connect first flap
With the third baffle of second flap；And the component of transferring the files in cam shape, including it is round with vertically extending axis and first, second
Arc, axis is static relative to guide rod, and the radius of the first, second circular arc is different, and component of transferring the files is by the first circular arc and the second circular arc
Different radii drives the first washer and the second washer on guide rod along the longitudinal sliding motion of guide rod；But said mechanism uses three gears
Piece is converted with the transmission for realizing electric tool, wherein three mutual clampings of washer, and set respectively between the cantilever of the baffle
There are two spring, not only structure is complicated and installation is not easy.
It is then desired to which the pattern switching mechanism to existing electric tool improves, to simplify structure and facilitate installation.
[utility model content]
To solve the above problems, the utility model provides a kind of simple pattern switching mechanism of structure and its electric tool.
In order to solve the above technical problems, the utility model adopts the following technical solution: one mode switching mechanism 101, peace
On casing loaded on electric tool, comprising: input shaft 1, swivel sleeve 3, guide rod 4, the first transfer strip 5, being driven by motor
Two transfer strips 6 and operating parts 7, the swivel sleeve 3 are sheathed on input shaft 1, and first transfer strip 5, the second transfer strip 6 are
It is sheathed on the guide rod 4, and first transfer strip 5 has the first cantilever 5a and drives the second of the movement of swivel sleeve 3 to hang
Arm 5b, the third cantilever 6a that second transfer strip 6 has driving swivel sleeve 3 mobile, the operating parts 7 have cam pin
7a, the pattern switching mechanism 101 further include the tension spring 8 being held on the first transfer strip 5 and the second transfer strip 6 respectively, and will
The cam pin 7a is held between the second cantilever 5b and third cantilever 6a, and when driving operating parts 7, the cam pin 7a is driven
Dynamic first transfer strip 5 drives the second transfer strip 6 with swivel sleeve 3 together along the axial movement of input shaft 1 or the cam pin 7a
Drive the second transfer strip 6 that the first transfer strip 5 is driven to move axially together along input shaft 1 with swivel sleeve 3.
Further improvement scheme are as follows: the swivel sleeve 3, which has, to be set between the second cantilever 5b and third cantilever 6a
Step 3a, and the thickness of the step 3a is less than the diameter of cam pin 7a, when pattern switching, the second of first transfer strip 5
The third cantilever 6a of cantilever 5b or the second transfer strip 6 is abutted with the step 3a and swivel sleeve 3 is driven to move axially.
Further improvement scheme are as follows: the left end of the tension spring 8 is held on the first cantilever 5a, the right end button of the tension spring 8
It is held on third cantilever 6a.
Further improvement scheme are as follows: the pattern switching mechanism 101 further includes the impact output 9 being sheathed on input shaft 1,
The left side of the impact output 9 is equipped with impact internal spline 9a, and the right side of the swivel sleeve 3 is equipped with engages with impact internal spline 9a
Impact external splines 3b.
Further improvement scheme are as follows: the pattern switching mechanism 101 further includes the first gear 10 being sheathed on input shaft, institute
The right side for stating first gear 10 is equipped with rotation internal spline 10a, and the left side of swivel sleeve 3 is equipped with and rotates what internal spline 10a was engaged
Rotate external splines 3c.
Further improvement scheme are as follows: the right side of the first gear 10 is additionally provided with rotation stop spline 10b, the first cantilever 5a
It is equipped with the locking part 5a ' engaged with rotation stop spline 10b.
Further improvement scheme are as follows: mode that there are four types of the pattern switching mechanism 101 position tools different according to cam pin 7a,
When being in first mode: the swivel sleeve 3 is located at left end, and the rotation internal spline 10a is nibbled with rotation external splines 3c
It closes, and the impact internal spline 9a is separated with impact external splines 3b；When in the second mode: swivel sleeve 3 is from first mode
Position moves right, and the rotation internal spline 10a is engaged with rotation external splines 3c at this time, while the impact internal spline 9a and punching
Hit external splines 3b engagement；When being in the third mode, the swivel sleeve 3 moves right from second mode position, described at this time
Rotation internal spline 10a is separated with rotation external splines 3c, and the impact internal spline 9a is engaged with impact external splines 3b；When being in
When fourth mode, the swivel sleeve 3 is located at right end, and the locking part 5a ' on the first cantilever 5a and first gear 10
Upper rotation stop spline 10b engaging.
Further improvement scheme are as follows: a kind of electric tool, comprising: casing, the clamping device 11 positioned at casing front end, installation
In the transmission mechanism 100 of casing internal, the transmission mechanism 100 drives the clamping device 11 to move；The transmission mechanism 100
Including output shaft assembly 102 and the above-mentioned pattern switching mechanism 101 being sequentially connected with output shaft assembly 102.
Compared with prior art the utility model has the following beneficial effects: being held in the first switching respectively using tension spring
On piece, the second transfer strip, operating parts has the cam pin being set between the first transfer strip, the second transfer strip, works as pattern switching
When, the cam pin drives the first transfer strip or the second transfer strip that swivel sleeve is driven to move axially along input shaft, wherein first
Transfer strip can not only drive swivel sleeve to move axially, and be additionally provided with the locking part for forbidding electric tool to rotate, and amount to and use two
The switching of four kinds of modes of electric tool can be realized in transfer strip, is conducive to simplify installation, save the cost.In addition swivel sleeve has
There is the step being set between the first transfer strip and the second transfer strip, the thickness of the step is less than the diameter of cam pin, so that
First transfer strip and the second transfer strip and step have gap, are conducive to reduce the first transfer strip, the second transfer strip and conversion
Friction between sleeve.
[Detailed description of the invention]
Fig. 1 is the three-dimensional view of the utility model transmission mechanism of electric tool；
Fig. 2 is the three-dimensional view of the pattern switching mechanism in the utility model；
Fig. 3 is the top view of Fig. 2 middle sleeve component；
Fig. 4 is the cross-sectional view of Fig. 1；
100, transmission mechanism, 101, pattern switching mechanism, 102, output shaft assembly, 1, input shaft, 2, output shaft, 3, conversion
Sleeve, 3a, step, 3b, impact external splines, 3c, rotation external splines, 4, guide rod, the 5, first transfer strip, 5a, the first cantilever, 5b,
Second cantilever, the 6, second transfer strip, 6a, third cantilever, 6b, the 4th cantilever, 7, operating parts, 7a, cam pin, 8, tension spring, 9, punching
Hit output, 9a, impact internal spline, 10, first gear, 10a, rotation internal spline, 11, clamping device, 12, second gear,
13, cylinder, 14, block stamp.
[specific embodiment]
Below in conjunction with drawings and examples, specific embodiment of the present utility model is further described.
Please refer to shown in Fig. 1 and Fig. 4, the electric tool of the utility model in the present embodiment with electric hammer for example,
The electric hammer include: casing (not shown), positioned at casing front end clamping device 11, be installed on the biography that casing internal is driven by motor
Motivation structure 100, the clamping device 11 are used for clamping device head, and the transmission mechanism 100 drives the clamping device 11, described
Transmission mechanism 100 include output shaft assembly 102 and with output shaft assembly transmission connection pattern switching mechanism 101, user according to
Different usage scenarios adjusts the switching that four kinds of modes may be implemented to pattern switching mechanism 101, and be respectively: drill jig formula is (also referred to as
First mode), impact drill mode (also referred to as second mode), conflicting model (also referred to as the third mode), lock shaft conflicting model (also referred to as
Four modes).The transmission mechanism 100 by under different mode rotation torque or impact force pass to tool heads and export.
Referring to figure 2. and shown in Fig. 3, the pattern switching mechanism 101 includes: input shaft 1, the conversion sleeve being driven by motor
Cylinder 3, guide rod 4, the first transfer strip 5 being in U-shape and the second transfer strip 6 and operating parts 7, the outbound course for defining electric hammer is left end,
The swivel sleeve 3 is sheathed on input shaft 1, and first transfer strip 5, the second transfer strip 6 are successively sheathed on institute by left-to-right
It states on guide rod 4, and first transfer strip 5 has the second cantilever 5b of the driving movement of swivel sleeve 3 and is located at the second cantilever 5b
The first cantilever 5a in left side, the third cantilever 6a and be located at third that second transfer strip 6 has driving swivel sleeve 3 mobile
The 4th cantilever 6b on the right side of cantilever, the operating parts 7 have cam pin 7a, and the pattern switching mechanism 101 further includes detaining respectively
The tension spring 8 being held on the first transfer strip 5 and the second transfer strip 6, the left end of the tension spring 8 is held on the first cantilever 5a, described
The right end of tension spring 8 is held on third cantilever 6a, which provides opposite prestretching to the first transfer strip 5, the second transfer strip 6
The cam pin 7a is further held between the second cantilever 5b and third cantilever 6a by power.The swivel sleeve 3 has
The step 3a being set between the second cantilever 5b and third cantilever 6a, and the thickness of the step 3a is straight less than cam pin 7a
Diameter, which makes the first transfer strip 5 and the second transfer strip 6 and step 3a have gap, when electric hammer works, swivel sleeve
3 high speed rotations, the gap are conducive to reduce the friction between the first transfer strip, the second transfer strip and swivel sleeve.
When pattern switching, the cam pin 7a drives the first transfer strip 5 or the second transfer strip 6 to move axially along guide rod 4, into
Second cantilever 5b or third cantilever 6a described in one step is abutted with the step 3a and swivel sleeve 3 is driven to move axially.
Referring to figure 2. to shown in Fig. 4, the output shaft assembly 102 includes the output shaft for being arranged in parallel in 1 top of input shaft
2, the block stamp 14 that the second gear 12 being fixedly arranged on output shaft 2, the cylinder 13, the cylinder 13 that are slideably positioned in output shaft 2 drive,
The 13 compressed air-driven block stamp 14 of cylinder is reciprocating, which is detailed later.The pattern switching mechanism 101
It further include the impact output 9 being sheathed on above-mentioned input shaft 1 and the first gear 10 engaged with second gear, first tooth
Wheel 10, swivel sleeve 3 and impact output 9 are from left to right arranged successively on input shaft 1.The left side of the impact output 9 is set
There is impact internal spline 9a, the right side of the swivel sleeve 3 is equipped with the impact external splines 3b engaged with impact internal spline 9a；It is described
The right side of first gear 10 is equipped with rotation internal spline 10a, and the left side of swivel sleeve 3 is equipped with the rotation engaged with rotation internal spline 10a
Turn external splines 3c；When electric hammer carries out impact output, the driving of the swivel sleeve 3 impact output 9 moves back and forth, the punching
The swing rod hit on output 9 connect with cylinder 13 and cylinder 13 is driven to move back and forth, which simultaneously drives
Block stamp 14 carries out impact output.When electric hammer carries out rotation output, the swivel sleeve 3 drives first gear 10 to be rotated, institute
Stating first gear 10 drives second gear 12 to be rotated, and the output shaft 2 is further driven to carry out rotation output.
The right side of the first gear 10 is additionally provided with rotation stop spline 10b, and the first cantilever 5a is equipped with and rotation stop
The locking part 5a ' of spline 10b engagement, when electric hammer individually carries out impact output, user can select according to different usage scenarios
It selects and locking is carried out to output shaft 2.
The position different according to cam pin 7a, drives first transfer strip 5, the second transfer strip 6 and swivel sleeve 3 to be in
Different positions, there are four types of modes for electric hammer tool described further, when being in drill jig formula (also referred to as first mode), the conversion sleeve
Cylinder 3 is located at left end, and the rotation internal spline 10a is engaged with rotation external splines 3c, and the impact internal spline 9a and impact are outer
Spline 3b separation；When being in impact drill mode (also referred to as second mode), swivel sleeve 3 moves right from first mode position,
The rotation internal spline 10a is engaged with rotation external splines 3c at this time, while the impact internal spline 9a and impact external splines 3b is nibbled
It closes；When being in conflicting model (also referred to as the third mode), the swivel sleeve 3 moves right from second mode position, at this time institute
It states rotation internal spline 10a to separate with rotation external splines 3c, and the impact internal spline 9a is engaged with impact external splines 3b；When being in
When lock shaft conflicting model (also referred to as fourth mode), the swivel sleeve 3 is located at right end, at this time the rotation internal spline 10a with
External splines 3c separation is rotated, the impact internal spline 9a is engaged with impact external splines 3b, and the locking on the first cantilever 5a
Portion 5a ' engages with rotation stop spline 10b in first gear 10.
Compared with prior art the utility model has the following beneficial effects: being held in the first switching respectively using tension spring
On piece, the second transfer strip, operating parts has the cam pin being set between the first transfer strip, the second transfer strip, works as pattern switching
When, the cam pin drives the first transfer strip or the second transfer strip that swivel sleeve is driven to move axially along input shaft, wherein first
Transfer strip can not only drive swivel sleeve to move axially, and be additionally provided with the locking part for forbidding electric tool to rotate, and amount to and use two
The switching of four kinds of modes of electric tool can be realized in transfer strip, is conducive to simplify installation, save the cost.In addition swivel sleeve has
There is the step being set between the first transfer strip and the second transfer strip, the thickness of the step is less than the diameter of cam pin, so that
First transfer strip and the second transfer strip and step have gap, are conducive to reduce the first transfer strip, the second transfer strip and conversion
Friction between sleeve.
The utility model is not limited to above-mentioned specific embodiment, and the protection scope of the utility model is with claims
Subject to content.
Claims (8)
1. one mode switching mechanism (101), is installed on the casing of electric tool, comprising:
Input shaft (1), swivel sleeve (3), guide rod (4), the first transfer strip (5), the second transfer strip (6) and the behaviour being driven by motor
Workpiece (7), the swivel sleeve (3) are sheathed on input shaft (1), and first transfer strip (5), the second transfer strip (6) cover
On the guide rod (4), and first transfer strip (5) has the first cantilever (5a) and drives swivel sleeve (3) movement
Second cantilever (5b), the third cantilever (6a) that second transfer strip (6) has driving swivel sleeve (3) mobile,
It is characterized by: the operating parts (7) has cam pin (7a), the pattern switching mechanism (101) further includes detaining respectively
The tension spring (8) being held on the first transfer strip (5) and the second transfer strip (6), and the cam pin (7a) is held on described second
Between cantilever (5b) and third cantilever (6a), when driving operating parts (7), the cam pin (7a) drives the first transfer strip (5) band
Dynamic second transfer strip (6) and swivel sleeve (3) are together along input shaft (1) axial movement or the cam pin (7a) driving second
Transfer strip (6) drives the first transfer strip (5) and swivel sleeve (3) to move axially together along input shaft (1).
2. pattern switching mechanism (101) according to claim 1, it is characterised in that: the swivel sleeve (3) has setting
Step (3a) between the second cantilever (5b) and third cantilever (6a), and the thickness of the step (3a) is less than cam pin (7a)
Diameter, when pattern switching, the second cantilever (5b) of first transfer strip (5) or the third cantilever of the second transfer strip (6)
(6a) squeezes the step (3a) and swivel sleeve (3) is driven to move axially.
3. pattern switching mechanism (101) according to claim 1, it is characterised in that: the left end of the tension spring (8) is held in
On first cantilever (5a), the right end of the tension spring (8) is held on third cantilever (6a).
4. pattern switching mechanism (101) according to claim 2, it is characterised in that: the pattern switching mechanism (101) is also wrapped
The impact output (9) being sheathed on input shaft (1) is included, the left side of the impact output (9) is equipped with impact internal spline (9a),
The right side of the swivel sleeve (3) is equipped with the impact external splines (3b) engaged with impact internal spline (9a).
5. pattern switching mechanism (101) according to claim 4, it is characterised in that: the pattern switching mechanism (101) is also wrapped
The first gear (10) being sheathed on input shaft is included, the right side of the first gear (10) is equipped with rotation internal spline (10a), conversion
The left side of sleeve (3) is equipped with the rotation external splines (3c) engaged with rotation internal spline (10a).
6. pattern switching mechanism (101) according to claim 5, it is characterised in that: the right side of the first gear (10)
It is additionally provided with rotation stop spline (10b), first cantilever (5a) is equipped with the locking part (5a ') engaged with rotation stop spline (10b).
7. pattern switching mechanism (101) according to claim 6, it is characterised in that: the pattern switching mechanism (101) according to
According to the different position tool of cam pin (7a), there are four types of modes, and first mode: the swivel sleeve (3) is located at left end, the rotation
Turn internal spline (10a) to engage with rotation external splines (3c), and the impact internal spline (9a) separates with impact external splines (3b)；The
Two modes: swivel sleeve (3) moves right from first mode position, at this time the rotation internal spline (10a) and rotation external splines
(3c) engagement, while the impact internal spline (9a) is engaged with impact external splines (3b)；The third mode, the swivel sleeve (3)
It moves right from second mode position, the rotation internal spline (10a) separates with rotation external splines (3c) at this time, and the impact
Internal spline (9a) is engaged with impact external splines (3b)；Fourth mode, the swivel sleeve (3) are located at right end, and described first is outstanding
Locking part (5a ') on arm (5a) engages with rotation stop spline (10b) on first gear (10).
8. a kind of electric tool, comprising: casing, positioned at casing front end clamping device (11), be installed on the transmission of casing internal
Mechanism (100), the transmission mechanism (100) drive clamping device (11) movement；It is characterized by: the transmission mechanism
It (100) include pattern switching mechanism described in any one of output shaft assembly (102) and claim 1 to 7 claim
(101), the pattern switching mechanism (101) and output shaft assembly (102) are sequentially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820638993.9U CN208880631U (en) | 2018-04-28 | 2018-04-28 | Pattern switching mechanism and its electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820638993.9U CN208880631U (en) | 2018-04-28 | 2018-04-28 | Pattern switching mechanism and its electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208880631U true CN208880631U (en) | 2019-05-21 |
Family
ID=66492683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820638993.9U Active CN208880631U (en) | 2018-04-28 | 2018-04-28 | Pattern switching mechanism and its electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208880631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405698A (en) * | 2018-04-28 | 2019-11-05 | 江苏东成机电工具有限公司 | Pattern switching mechanism and its electric tool |
| CN110456596A (en) * | 2019-08-16 | 2019-11-15 | 苏州佳世达光电有限公司 | Drive switching device and the imaging device using it |
-
2018
- 2018-04-28 CN CN201820638993.9U patent/CN208880631U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405698A (en) * | 2018-04-28 | 2019-11-05 | 江苏东成机电工具有限公司 | Pattern switching mechanism and its electric tool |
| CN110456596A (en) * | 2019-08-16 | 2019-11-15 | 苏州佳世达光电有限公司 | Drive switching device and the imaging device using it |
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