CN208005598U - Pattern switching mechanism and its electric tool - Google Patents
Pattern switching mechanism and its electric tool Download PDFInfo
- Publication number
- CN208005598U CN208005598U CN201820299176.5U CN201820299176U CN208005598U CN 208005598 U CN208005598 U CN 208005598U CN 201820299176 U CN201820299176 U CN 201820299176U CN 208005598 U CN208005598 U CN 208005598U
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- cantilever
- plectrum
- impact
- pattern switching
- switching mechanism
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Abstract
The utility model discloses one mode switching mechanism and its electric tool, the pattern switching mechanism include：By motor-driven input shaft, it is sheathed on input shaft and is parallel to the input shaft with the drill bushing cylinder and impingement sleeve of input shaft synchronous rotary, guide rod, the brill plectrum to take the shape of the letter U and impact plectrum, knob, the first spring, the guide rod；The brill plectrum is sheathed on guide rod with impact plectrum, and arranged in a crossed manner；First spring is abutted with brill plectrum and impact plectrum respectively, the pattern switching mechanism further includes being fixed on clamping element on guide rod, initial position, the brill plectrum and impact plectrum are abutted with the both ends of clamping element respectively, when pattern switching, cam pin driving on the knob is bored plectrum and is moved axially along guide rod with impact plectrum any one element therein, and in addition an element is abutted by clamping element.The pattern switching mechanism can prevent from rubbing when pattern switching.
Description
[Ji Shulingyu ]
The utility model is related to field of power tools, more particularly to one mode switching mechanism and its electric tool.
[Bei Jingjishu ]
Electric tool such as electric hammer, user carry out selecting different electric hammer operating modes according to different usage scenarios.Example
Such as, it is announced by Chinese invention and discloses a kind of electric hammer having various modes in No. CN101633163B, on operating element
Protrusion coordinates with coupling sleeve, and by rotary operation elements, protrusion can promote the position of coupling sleeve to change, to realize
Switching between different mode.Coupling sleeve constantly rotates, and the protrusion remains stationary, under the action of spring pressure, coupling sleeve
It is being kept in contact between cylinder and protrusion, which generates big friction, this frictional dissipation portion of energy, so as to cause electronic
The reduced performance of tool.
It is then desired to which the pattern switching mechanism to existing electric tool is improved, to reduce pattern switching action production
Raw friction.
[Shi Yongxinxingneirong ]
To solve the above problems, the utility model provides a kind of pattern switching mechanism and its electric tool reducing friction.
In order to solve the above technical problems, the utility model adopts the following technical solution：One mode switching mechanism 100, peace
On casing loaded on electric tool, including：By motor-driven input shaft 1, the output shaft being sequentially connected with input shaft 12, it is arranged
In on input shaft 1 and with the drill bushing cylinder 3 of 1 synchronous rotary of input shaft and impingement sleeve 4, guide rod 5, the brill plectrum 6 to take the shape of the letter U and impact
Plectrum 7, knob 8, the first spring 9, the guide rod 5 are parallel to the input shaft 1；The brill plectrum 6 is arranged with impact plectrum 7
In on guide rod 5, it is described bore plectrum 6 and have be fastened in the first cantilever 6a on drill bushing cylinder 3 and second on the right side of the first cantilever 6a
Cantilever 6b, the impact plectrum 7, which has, is fastened in the 4th cantilever 7b on impingement sleeve 4 and the third on the left of the 4th cantilever
Cantilever 7a, the impact plectrum 7 are set to the right side for boring plectrum 6, and the second cantilever 6b is set to third cantilever 7a and the
Between four cantilever 7b；First spring 9 is sheathed on guide rod 5, and its axial both ends respectively with the right side of the second cantilever 6b,
The left side of 4th cantilever 7b abuts；The pattern switching mechanism 100 further includes being set to the second cantilever 6b and third cantilever
Clamping element 10 between 7a, the clamping element 10 fixation are fastened on the guide rod 5, and the knob 8, which has, is set to second
Cam pin 8a between cantilever 6b and third cantilever 7a, initial position, the second cantilever 6b and third cantilever 7a respectively with clamping
The both ends of element 10 abut, and when pattern switching, plectrum 6 and any one therein of plectrum 7 of impact are bored in the cam pin 8a drivings
Element is moved axially along guide rod 5, and in addition an element is abutted by clamping element 10.
The scheme of being further improved is：The clamping element 10 is by spaced first retainer ring 10a, the second retainer ring 10b groups
At.
The scheme of being further improved is：The pattern switching mechanism 100 further includes the impact output being sheathed on above-mentioned input shaft 1
Part 11, the drill bushing cylinder 3, impingement sleeve 4 and the impact output 11 are from left to right arranged in order in the input shaft 1
On, the left end of the impact output 11 is equipped with internal spline 11a, and the right end of the impingement sleeve 4 is equipped with to be engaged with internal spline 11a
Spline 4a is impacted, when pattern switching, the driving of impact plectrum 7 impingement sleeve 4 is separate or mesh impact output 11.
The scheme of being further improved is：The pattern switching mechanism 100 further includes the output gear 12 being fixedly arranged on output shaft 2,
The left end of the drill bushing cylinder 3 is equipped with brill gear gear 3a engage with output gear 12, when pattern switching, the driving of brill plectrum 6
Drill bushing cylinder 3 is separate or engages output gear 12.
The scheme of being further improved is：The pattern switching mechanism 100 further includes the locking piece to take the shape of the letter U being sheathed on guide rod 1
13 and second spring 14, the fixed third retainer ring 15 being fastened on guide rod, the locking piece 13 be set to the left end for boring plectrum 6,
And the locking piece 13 is equipped with the 5th cantilever 13a, the 6th cantilever 13b on the right side of the 5th cantilever 13a of clamping output gear 12,
The third retainer ring 15 is set between the 5th cantilever 13a and the 6th cantilever 13b, and the second spring 14 is set to third retainer ring
15 and the 6th between cantilever 13b, which is pressed on the 6th cantilever 13b in the left side of the first cantilever 6a in advance.
The scheme of being further improved is：The pattern switching mechanism 100 has according to the different location of cam pin 8a there are four types of pattern,
When in first mode:The cam pin 8a is located at initial position, and cam pin 8a is oppositely arranged with the clamping element 10,
The brill gear gear 3a is engaged with output gear 12, and the internal spline 11a is engaged with impact spline 4a；When in second mode
When：Cam pin 8a is moved to the left by initial position, and brill gear gear 3a is engaged with output gear 12, the internal spline 11a and
Impact spline 4a separation；When in the third mode:Cam pin 8a is moved right by initial position, brill gear gear 3a with it is defeated
Go out the separation of gear 12, the internal spline 11a is engaged with impact spline 4a；When in fourth mode:Cam pin 8a is by third mould
Formula position continues to move right, and the brill gear gear 3a is detached with output gear 12, and the internal spline 11a is nibbled with impact spline 4a
It closes, and the 5th cantilever 13a of the locking piece 13 engages with the output gear 12.
The scheme of being further improved is：A kind of electric tool, including：Casing, the clamping device 18 positioned at casing front end, installation
In the transmission mechanism 200 of casing internal；It is characterized in that：The transmission mechanism 200 includes above-mentioned pattern switching mechanism 100.
The utility model has the advantages that compared with prior art：Fixed clamping element is equipped on guide rod 5
10, when pattern switching, it is axial along guide rod 5 with the impact any one element therein of plectrum 7 that plectrum 6 is bored in the cam pin 8a drivings
Mobile, in addition an element is abutted by clamping element 10, and after pattern switching, the element abutted will not be to its clamping
Drill bushing cylinder 3 or impingement sleeve 4 generate pressure, thereby reduce generated friction after pattern switching, improve service life.
[Illustrate ]
Fig. 1 is the three-dimensional view of the utility model transmission mechanism of electric tool；
Fig. 2 is the exploded view of Fig. 1；
Fig. 3 is the cross section view of Fig. 1；
Fig. 4 is the three-dimensional view of the part building block of pattern switching mechanism；
Fig. 5 is the three-dimensional view of the main building block of pattern switching mechanism；
Fig. 6 is the front view of the main building block of pattern switching mechanism；
Fig. 7 is the three-dimensional view that pattern switching mechanism is in fourth mode (lock shaft conflicting model)；
100, pattern switching mechanism, 200, drive mechanism, 1, input shaft, 2, output shaft, 3, drill bushing cylinder, 3a, gear of seeking loopholes,
4, impingement sleeve, 4a, impact spline, 5, guide rod, 6, bore plectrum, 6a, the first cantilever, 6b, the second cantilever, 7, impact plectrum, 7a,
Third cantilever, 7b, the 4th cantilever, 8, knob, 8a, cam pin, the 9, first spring, 10, clamping element, 10a, the first retainer ring,
10b, the second retainer ring, 11, impact output, 11a, internal spline, 12, output gear, 13, locking piece, 14, second spring, 15, the
Three retainer rings, 16, cylinder, 17, block stamp, 18, clamping device.
[Ju Tishishifangshi ]
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. 7, the electric tool of the utility model in the present embodiment with electric hammer for example,
The electric hammer includes：Casing (not shown), positioned at casing front end clamping device 18, be installed on casing internal by motor-driven biography
Motivation structure 200, the clamping device 18 are used for clamping device head, and the transmission mechanism 200 includes pattern switching mechanism 100, is used
Family can carry out the switching of four kinds of patterns according to different usage scenarios, be respectively：Impact drill pattern (also referred to as first mode) is bored
Pattern (also referred to as second mode), conflicting model (also referred to as the third mode), lock shaft conflicting model (also referred to as fourth mode).The transmission
Mechanism 200 by under different mode rotation torque or impact force pass to tool heads and export.
It please refers to shown in Fig. 3 and Fig. 4, the pattern switching mechanism 100 includes：By motor-driven input shaft 1 and from
It is left-to-right to be sheathed on drill bushing cylinder 3 on the input shaft 1, impingement sleeve 4 and the impact output 11 successively, define electric hammer
Outbound course is left end, and the drill bushing cylinder 3 and impingement sleeve 4 and 1 synchronous rotary of input shaft, the left end of the impact output 11 are set
There are internal spline 11a, the right end of the impingement sleeve 4 to be equipped with the impact spline 4a engaged with internal spline 11a.The pattern switching machine
Structure 100 further includes the output shaft 2 being sequentially connected with input shaft, fixes output gear 12, the left end of the drill bushing cylinder 3 with output shaft
Equipped with the brill gear gear 3a engaged with output gear 12.
When the electric hammer rotation output, the drill bushing cylinder 3 is engaged with output gear 12；When the electric hammer impact output, institute
It states impingement sleeve 4 to engage with impact output 11, the cylinder 16 in the impact output 11 driving output shaft 9 carries out back and forth
Movement, cylinder 16 drive block stamp 17 to carry out impact output.
It please refers to shown in Fig. 5 and Fig. 6, the pattern switching mechanism 100 further includes：It is parallel to the guide rod 5 of input shaft 1, is in U
The brill plectrum 6 of shape, the impact plectrum 7 to take the shape of the letter U, the locking piece 13 to take the shape of the letter U, knob 8, the first spring 9, second spring 14, clamping
Element 10, third retainer ring 15.Wherein bore plectrum 6, impact plectrum 7, locking piece 13, the first spring 9 and second spring 14
Sliding is sheathed on guide rod 5, and the clamping element 10 and the fixation of third retainer ring 15 are fastened on the guide rod 5.
The plectrum 6 that bores has that be fastened in the first cantilever 6a on drill bushing cylinder 3 and second on the right side of the first cantilever 6a outstanding
Arm 6b, the impact plectrum 7 have that be fastened in the 4th cantilever 7b on impingement sleeve 4 and the third on the left of the 4th cantilever outstanding
Arm 7a, the impact plectrum 7 is set to the right side for boring plectrum 6, and the second cantilever 6b is set to third cantilever 7a and the 4th
Between cantilever 7b；Left side of the axial both ends of first spring 9 respectively with the right side of the second cantilever 6b, the 4th cantilever 7b is supported
It connects；The fixation of the described clamping element 10 is fastened on the guide rod 5, the clamping element 10 by spaced first retainer ring 10a,
Second retainer ring 10b compositions.The impact plectrum 7 drives impingement sleeve 4 separate or mesh impact output 11, the brill plectrum 6
Drive drill bushing cylinder 3 separate or engagement output gear 12.
It please refers to shown in Fig. 2 and Fig. 5 to Fig. 7, the locking piece 13 is set to the left end for boring plectrum 6, and the locking piece
13 are equipped with the 5th cantilever 13a, the 6th cantilever 13b on the right side of the 5th cantilever 13a of clamping output gear 12, the third card
Circle 15 is set between the 5th cantilever 13a and the 6th cantilever 13b, and it is outstanding that the second spring 14 is set to third retainer ring 15 and the 6th
Between arm 13b, which is pressed on the 6th cantilever 13b in the left side of the first cantilever 6a in advance.
The knob 8, which has, is set to cam pin 8a between the second cantilever 6b and third cantilever 7a, initial position is in
Impact drill pattern (first mode), at this time the first spring 9 be in the longest position of length, the second cantilever 6b and third at this time
Cantilever 7a is abutted with the both ends of clamping element 10 respectively, and cam pin 8a is oppositely arranged with the clamping element 10, the brill gear
Gear 3a is engaged with output gear 12, and the internal spline 11a is engaged with impact spline 4a, when pattern switching, the cam pin 8a
Driving is bored plectrum 6 and is moved axially along guide rod 5 with the impact any one element therein of plectrum 7, and in addition an element is by clamping member
Part 10 abuts.Present embodiment is moved right with cam pin 8a for example, please referring to shown in Fig. 7, the one side cam pin
8a moves right, and further driving bores plectrum 6 and moves right, and bores plectrum 6 and drill bushing cylinder 3 is driven to be detached with output gear 12, another
Aspect, impact plectrum 7 can not move right because being stopped by clamping element 10, avoid impingement sleeve 4 and be in most right
It holds and impacts plectrum and continue to apply it pressure to the right and generate friction.When similarly can obtain cam pin 8a and being moved to the left, equally may be used
To avoid plectrum 6 is bored friction is generated with drill bushing cylinder 3.
The pattern switching mechanism 100 according to cam pin 8a different location tool there are four types of pattern, at above-mentioned cam pin 8a
It is in impact drill pattern (first mode) in initial position；When in drill jig formula (also referred to as second mode)：Cam pin 8a by
Initial position is moved to the left, and the brill gear gear 3a is engaged with output gear 12, and the internal spline 11a divides with impact spline 4a
From；When in conflicting model (also referred to as the third mode):Cam pin 8a is moved right by initial position, brill gear gear 3a with
Output gear 12 detaches, and the internal spline 11a is engaged with impact spline 4a；When in lock shaft conflicting model (also referred to as fourth mode)
When:It please refers to shown in Fig. 7, cam pin 8a is continued to move right by the third mode position, the brill gear gear 3a and output gear
12 separation, the internal spline 11a are engaged with impact spline 4a, and the 5th cantilever 13a of the locking piece 13 and the output gear
12 engaging of wheel.
The utility model has the advantages that compared with prior art：Fixed clamping element is equipped on guide rod 5
10, when pattern switching, it is axial along guide rod 5 with the impact any one element therein of plectrum 7 that plectrum 6 is bored in the cam pin 8a drivings
Mobile, in addition an element is abutted by clamping element 10, and after pattern switching, the element abutted will not be to its clamping
Drill bushing cylinder 3 or impingement sleeve 4 generate pressure, therefore reduce generated friction after pattern switching, improve service life.
The utility model is not limited to above-mentioned specific implementation mode, and the scope of protection of the utility model is with claims
Subject to content.
Claims (7)
1. one mode switching mechanism (100), is installed on the casing of electric tool, including：By motor-driven input shaft
(1), with input shaft (1) be sequentially connected output shaft (2), be sheathed on input shaft (1) and with the brill of input shaft (1) synchronous rotary
Sleeve (3) and impingement sleeve (4), guide rod (5), the brill plectrum (6) to take the shape of the letter U and impact plectrum (7), knob (8), the first spring
(9), the guide rod (5) is parallel to the input shaft (1)；The brill plectrum (6) is sheathed on guide rod (5) with impact plectrum (7)
On, the plectrum (6) that bores has second for being fastened in the first cantilever (6a) on drill bushing cylinder (3) and being located on the right side of the first cantilever (6a)
Cantilever (6b), the impact plectrum (7) have the 4th cantilever (7b) being fastened on impingement sleeve (4) and positioned at a 4th cantilever left sides
The third cantilever (7a) of side, the impact plectrum (7) is set to the right side for boring plectrum (6), and second cantilever (6b) is arranged
Between third cantilever (7a) and the 4th cantilever (7b)；First spring (9) is sheathed on guide rod (5), and the two of its axial direction
End is abutted with the left side on the right side of the second cantilever (6b), the 4th cantilever (7b) respectively；It is characterized in that：The pattern switching mechanism
(100) further include the clamping element (10) being set between second cantilever (6b) and third cantilever (7a), the clamping element
(10) fixation is fastened on the guide rod (5), the knob (8) have be set to the second cantilever (6b) and third cantilever (7a) it
Between cam pin (8a), initial position, second cantilever (6b) and third cantilever (7a) both ends with clamping element (10) respectively
It abuts, when pattern switching, plectrum (6) and impact plectrum (7) any one element edge therein are bored in cam pin (8a) driving
Guide rod (5) moves axially, and in addition an element is abutted by clamping element (10).
2. pattern switching mechanism (100) according to claim 1, it is characterised in that：The clamping element (10) is by being spaced
The first retainer ring (10a), the second retainer ring (10b) composition being arranged.
3. pattern switching mechanism (100) according to claim 1 or 2, it is characterised in that：The pattern switching mechanism (100)
Further include the impact output (11) being sheathed on above-mentioned input shaft (1), the drill bushing cylinder (3), impingement sleeve (4) and described
Impact output (11) is from left to right arranged in order on the input shaft (1), and the left end of the impact output (11) is equipped with interior
Spline (11a), the right end of the impingement sleeve (4) are equipped with the impact spline (4a) engaged with internal spline (11a), pattern switching
When, the impact plectrum (7) drives impingement sleeve (4) separate or mesh impact output (11).
4. pattern switching mechanism (100) according to claim 3, it is characterised in that：The pattern switching mechanism (100) is also wrapped
Include the output gear (12) being fixedly arranged on output shaft (2), the left end of the drill bushing cylinder (3) is equipped with to be engaged with output gear (12)
Gear gear (3a) is bored, when pattern switching, brills plectrum (6) the driving drill bushing cylinder (3) is separate or engages output gear (12).
5. pattern switching mechanism (100) according to claim 4, it is characterised in that：The pattern switching mechanism (100) is also wrapped
Include the locking piece (13) to take the shape of the letter U being sheathed on guide rod (1) and second spring (14), the fixed third retainer ring being fastened on guide rod
(15), the locking piece (13) is set to the left end for boring plectrum (6), and the locking piece (13) is equipped with clamping output gear (12)
5th cantilever (13a), the 6th cantilever (13b) being located on the right side of the 5th cantilever (13a), the third retainer ring (15) are set to the 5th
Between cantilever (13a) and the 6th cantilever (13b), the second spring (14) is set to third retainer ring (15) and the 6th cantilever
Between (13b), which is pressed on the 6th cantilever (13b) in the left side of the first cantilever (6a) in advance.
6. pattern switching mechanism (100) according to claim 5, it is characterised in that：Pattern switching mechanism (100) foundation
There are four types of patterns for the different location tool of cam pin (8a), when in first mode:The cam pin (8a) is located at initial position,
The cam pin (8a) is oppositely arranged with the clamping element (10), and the brill gear gear (3a) is engaged with output gear (12), institute
Internal spline (11a) is stated to engage with impact spline (4a)；When in the second mode：Cam pin (8a) is from initial position to moving to left
Dynamic, the brill gear gear (3a) is engaged with output gear (12), and the internal spline (11a) detaches with impact spline (4a)；Work as place
When the third mode:Cam pin (8a) is moved right by initial position, and the brill gear gear (3a) detaches with output gear (12),
The internal spline (11a) is engaged with impact spline (4a)；When in fourth mode:Cam pin (8a) is by the third mode position
Continue to move right, the brill gear gear (3a) detaches with output gear (12), the internal spline (11a) and impact spline (4a)
Engagement, and the 5th cantilever (13a) of the locking piece (13) engages with the output gear (12).
7. a kind of electric tool, including：Casing, positioned at casing front end clamping device (18), be installed on the transmission of casing internal
Mechanism (200)；It is characterized in that：The transmission mechanism (200) includes described in any one of claim 1 to 6 claim
Pattern switching mechanism (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820299176.5U CN208005598U (en) | 2018-03-04 | 2018-03-04 | Pattern switching mechanism and its electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820299176.5U CN208005598U (en) | 2018-03-04 | 2018-03-04 | Pattern switching mechanism and its electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208005598U true CN208005598U (en) | 2018-10-26 |
Family
ID=63888043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820299176.5U Active CN208005598U (en) | 2018-03-04 | 2018-03-04 | Pattern switching mechanism and its electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208005598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555792A (en) * | 2018-12-05 | 2019-04-02 | 浙江亚特电器有限公司 | A kind of electric hammer arrangement of clutch |
| CN112847257A (en) * | 2021-04-03 | 2021-05-28 | 浙江杭博电动工具有限公司 | Electric hammer capable of stably switching working state |
-
2018
- 2018-03-04 CN CN201820299176.5U patent/CN208005598U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555792A (en) * | 2018-12-05 | 2019-04-02 | 浙江亚特电器有限公司 | A kind of electric hammer arrangement of clutch |
| CN109555792B (en) * | 2018-12-05 | 2023-10-13 | 浙江亚特电器股份有限公司 | Electric hammer clutch device |
| CN112847257A (en) * | 2021-04-03 | 2021-05-28 | 浙江杭博电动工具有限公司 | Electric hammer capable of stably switching working state |
| CN112847257B (en) * | 2021-04-03 | 2024-05-28 | 浙江杭博电动工具有限公司 | Electric hammer capable of stably switching working state |
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