CN208557377U - A kind of electric hammer - Google Patents
A kind of electric hammer Download PDFInfo
- Publication number
- CN208557377U CN208557377U CN201820750874.2U CN201820750874U CN208557377U CN 208557377 U CN208557377 U CN 208557377U CN 201820750874 U CN201820750874 U CN 201820750874U CN 208557377 U CN208557377 U CN 208557377U
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- CN
- China
- Prior art keywords
- support
- clutch sleeve
- electric hammer
- spring
- jackshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a kind of electric hammers, it is intended to solve the problems, such as that pattern switching mechanism easily generates heat, " tooth is to tooth " switches not genial mechanism element and assemble complexity more.The electric hammer includes: motor；The jackshaft being connect with the motor；Rotary components；Gear wheel is rotated synchronously with the rotary components；The pinion gear engaged with the gear wheel；Impact assembly；The Oscillating lever bearing being connect with impact assembly, including installing to the swinging disc and oscillating rod of the jackshaft；Switching mechanism, comprising: clutch sleeve, two brackets, elastic element, guide rod and knob；Clutch sleeve, including a flange and spline are rotated synchronously with the jackshaft, and can be moved along the countershaft axis, and are optionally connected with the swinging disc or the pinion gear by spline.
Description
[technical field]
The utility model relates to a kind of electric hammer, in particular to one kind has multiple pattern switchings, i.e., single brills, drilling, it is single dig,
The electric hammer of lock shaft chisel.
[background technique]
It is carried out for user according to different usage scenarios it is generally known that multifunctional electric hammer has multiple-working mode
Selection.However the mode switching structure in existing technology is because there are biggish frictional force between coupling sleeve and rotary switch
Mode switching structure is caused easily to generate heat.For example, a kind of electric hammer for having various modes as disclosed in CN101633163B, operation member
Protrusion and coupling sleeve on part cooperate, and by rotary operation elements, protrusion can promote the position of coupling sleeve to change, from
And realize the switching between different mode.It can be generated when being kept in contact under the action of spring pressure between coupling sleeve and protrusion
Big frictional heat and there is localized hyperthermia, this friction thermal losses portion of energy, so as to cause the reduced performance of electric tool.
A kind of electric hammer is disclosed by CN2015/0099493 comprising gear sleeve, driving bearing, gear shaft and driving
Axis.In this electric hammer, drive shaft passes to driving bearing and gear shaft by gear sleeve, to realize three kinds of Working moulds of electric hammer
Formula.Technical solution in the patent publication us processes gear on transmission shaft；In addition multiple parts involved in transmission mechanism
Manufacture and assembly are complicated, this undoubtedly increases the failure rate in assembly difficulty and operational process.
[utility model content]
The purpose of the utility model is to provide one kind various modes electric hammer that can reduce frictional heat, have pattern switching,
Even if clutch sleeve and pinion gear are in " tooth sets tooth position " simultaneously, pattern switching can be still gone on smoothly.
The technical scheme that the utility model is provided is as follows:
A kind of electric hammer, comprising: motor；The jackshaft being connected to motor；Rotary components；It is rotated synchronously with rotary components big
Gear；The pinion gear engaged with gear wheel；Impact assembly；The Oscillating lever bearing being connect with impact assembly, including installation is in described
Between axis swinging disc and oscillating rod；Switching mechanism, comprising: clutch sleeve, two brackets, elastic element, guide rod and knob；It is special
Sign is: clutch sleeve, including a flange and spline, rotates synchronously with jackshaft, and can move along countershaft axis, and pass through
Spline is optionally connected with swinging disc or pinion gear；Two brackets are perforated and are all moved along guide rod, and one of branch
Frame is abutted with clutch sleeve flange side, another bracket is abutted with the clutch sleeve flange other side；Knob includes an eccentric part,
Eccentric part is placed between two brackets, and eccentric part can make one of bracket be moved to another position from a position, then
Clutch sleeve is moved to another position from a position under the effect of another bracket；
Preferably, two brackets intersect installation, and elastic element is a spring, and both ends of the spring respectively with described two brackets
It abuts.
Preferably, two brackets are located at the eccentric part two sides, and non-cross；Elastic element is two springs, and bullet
Spring one end is abutted with one of bracket, and the spring other end step fixed with opposite casing abuts
Preferably, the wherein bracket in two brackets further includes a lock teeth portion.
Preferably, clutch sleeve and pinion gear are made of one.
Preferably, two brackets are U-shaped structure.
It is lesser to can get a kind of frictional heat according to the utility model, part is less and the simple electric hammer of assembly.
[Detailed description of the invention]
Fig. 1 is that the electric hammer of the utility model first embodiment is in drilling mode part schematic cross-section；
Fig. 2 is that the electric hammer of the utility model first embodiment is in drilling mode part stereoscopic schematic diagram；
Fig. 3 is that part is three-dimensional when the electric hammer drilling mode of the utility model first embodiment digs pattern switching to lock shaft
Schematic diagram；
Fig. 4 is that part is three-dimensional when the electric hammer lock shaft of the utility model first embodiment digs mode to drilling pattern switching
Schematic diagram；
Fig. 5 is the electric hammer part perspective view of the utility model second embodiment；
The meaning of appended drawing reference:
1, motor 2, oscillating rod 3, impact assembly 4, gear wheel 5, rotary components
6, guide rod 7, first support 8, second support 9, spring 10, pinion gear
11, clutch sleeve 11.1, clutch sleeve flange 11.1.1, clutch sleeve flange side
11.1.2, the clutch sleeve flange other side 11.2, clutch sleeve spline 12, swinging disc
13, jackshaft 13.1, the spline tooth 14 on jackshaft, input gear
15, motor gear 16, Oscillating lever bearing 17, switching mechanism
18, knob 18.1, eccentric part 19, the first spring 20, second spring 78, formation slot
[specific embodiment]
Further details of explanation is made to the first embodiment of the utility model with reference to the accompanying drawing.It should be noted that
Identical appended drawing reference represents the same or similar element of function in the various figures.
As depicted in figs. 1 and 2, electric hammer 100 is under drilling mode.Electric hammer 100 includes: motor 1, jackshaft 2, switching
Mechanism 17, pinion gear 10, gear wheel 4, rotary components 5, Oscillating lever bearing 16, impact assembly 3.
Wherein, motor 1 includes motor gear 15, and input gear 14 is fixed on jackshaft 2；Pass through 15 He of motor gear
Gear 14 engages, and jackshaft 2 can be driven by motor 1 and rotate around center axis thereof.
Switching mechanism 17 includes: clutch sleeve 11, first support 7, second support 8, spring 9, guide rod 6 and knob 18；The
One bracket 7 and second support 8 are perforated and can be moved along guide rod 6, and first support 7 and second support 8 intersect installation, spring 9
Both ends are abutted with first support 7 and second support 8 respectively；Knob 18 includes an eccentric part 18.1, and eccentric part 18.1 is placed in first
Between bracket 7 and second support 8.Clutch sleeve 11 includes clutch sleeve flange 11.1, clutch sleeve spline 11.2；Clutch sleeve
Spline tooth 13.1 on spline 11.2 and jackshaft acts on, so that clutch sleeve 11 in a certain range can be along 13 axis of jackshaft
Line is mobile and rotates together with jackshaft 13.Clutch sleeve flange 11.1 includes clutch sleeve flange side 11.1.1 and clutch cover
Cylinder flange other side 11.1.2.First support 7 and clutch sleeve flange side 11.1.1 are abutted, second support 8 and clutch sleeve
Flange other side 11.1.2 is abutted.First support 7 further includes a lock teeth portion 7.1, lock 7.1 property of can choose of teeth portion and pinion gear
10 effects, limitation pinion gear 10 rotate, to achieve the purpose that limiting gear wheel 4 and rotary components 5 rotates；Certainly, teeth portion is locked
7.1 can also be designed to act on gear wheel 4, equally achieve the purpose that limiting gear wheel 4 and rotary components 5 rotates.
Rotary components 5, for making electric hammer 100 export rotary force；Gear wheel 4 is mounted on rotary components 5 and synchronizes
Rotation；Pinion gear 10 is mounted on jackshaft 13, is rotated relatively freely with jackshaft 13；Pinion gear 10 is engaged with gear wheel 4 to be turned
It is dynamic；In this way, when the selection of the spline 11.2 of clutch sleeve 11 and pinion gear 10 connect, the power of motor 1 by motor gear 15,
Input gear 14, jackshaft 13, clutch sleeve 11, pinion gear 10, gear wheel 4 are successively transferred to rotary components 5, and electric hammer 100 is defeated
Rotary force out.When the spline 11.2 of clutch sleeve 11 and pinion gear 10 are disconnected, electric hammer 100 does not export rotary force.
Impact assembly 3, for making electric hammer 100 export impact force；Oscillating lever bearing 16 includes pendulum of the installation to the jackshaft
Moving plate 12 and oscillating rod 2, swinging disc 12 are rotated relatively freely with jackshaft 13, and oscillating rod 2 is connect with impact assembly 3；In this way, working as
When the selection of spline 11.2 of clutch sleeve 11 and swinging disc 12 connect, the power of motor 1 passes through motor gear 15, input gear
14, jackshaft 13, clutch sleeve 11, swinging disc 12, oscillating rod 2 are successively transferred to impact assembly 3, and electric hammer 100 exports impact force.
When the spline 11.2 of clutch sleeve 11 and swinging disc 12 are disconnected, electric hammer 100 does not export impact force.
Part stereoscopic schematic diagram when digging pattern switching to lock shaft from drilling mode referring to electric hammer 100 shown in Fig. 3, this
When electric hammer 100 knob 18 be threaded under lock shaft chisel mode it is fixed.The eccentric part 18.1 of knob 18 drive second support 8 to
It moves left, second support 8 is then moved to the left first support 7 by compressed spring 9；First support 7 then pushes clutch sleeve convex
Edge side 11.1.1 is moved to the left clutch sleeve 11.State as shown in Figure 3 is likely encountered 7.1 He of lock teeth portion of first support 7
Pinion gear 10 " tooth sets tooth position ", when 100 lock shaft of electric hammer digs mode work, the rotation of rotary components 5 can then drive 10 turns of pinion gear
Dynamic, " tooth sets tooth position " releases, and lock teeth portion 7.1 enters and pinion gear 10 connects.The spline 11.2 of clutch sleeve 11 it is selected and
Swinging disc 12 connects, while locking teeth portion 7.1 and limiting the rotation of pinion gear 10, gear wheel 4 and rotary components 5, and electric hammer 100 is in
Lock shaft digs mode.
Part stereoscopic schematic diagram when digging mode to drilling pattern switching from lock shaft referring to electric hammer 100 shown in Fig. 4, this
When electric hammer 100 knob 18 be threaded under drilling mode it is fixed.The eccentric part 18.1 of knob 18 drives first support 7 to the right
Mobile, first support 7 then makes second support 8 move right by compressed spring 9；Second support 8 then pushes clutch sleeve flange
Other side 11.1.2 makes clutch sleeve 11 move right.State as shown in Figure 4 is likely encountered clutch sleeve spline 11.2 and small tooth
Take turns 10 " tooth sets tooth position ", 100 drilling mode of electric hammer be switched on work when, jackshaft 13 drive clutch sleeve 11 rotate, it is small at this time
Gear 10 is not relative to rotating；Since clutch sleeve spline 11.2 and pinion gear 10 relatively rotate, release " tooth sets tooth position ", from
The spline 11.2 and swinging disc 12 and pinion gear 10 of trap cylinder 11 connect simultaneously, and electric hammer 100 is in drilling mode.
By shown in figure 3 above and Fig. 4 it is found that switching mechanism 17 can make clutch sleeve 11 in a certain range in
Between 13 axis of axis move left and right, to make clutch sleeve 11, selectively swinging disc 12 and pinion gear 10 are connected.Electric hammer 100 is single to be bored
Mode, clutch sleeve 11 and pinion gear 10 connect, and clutch sleeve 11 and swinging disc 12 are disconnected；100 drilling mode of electric hammer, from
Trap cylinder 11 and pinion gear 10 and swinging disc 12 connect simultaneously；The single chisel mode of electric hammer 100, clutch sleeve 11 and pinion gear 10 are detached from
Connection, clutch sleeve 11 and swinging disc 12 connect；100 lock shaft of electric hammer digs mode, and clutch sleeve 11 and pinion gear 10 are disconnected,
Clutch sleeve 11 and swinging disc 12 connect, while locking teeth portion 7.1 and entering and the connection of pinion gear 10；
It is envisioned that clutch sleeve 11 and pinion gear 10 are made of one formula, clutch sleeve 11 and pinion gear 10 are connected
Become the pinion part 10 of clutch sleeve 11 with the relationship of being disconnected and gear wheel 4 is connected and disconnected from connection relationship.There are also realities
It applies in example diagram, clutch sleeve 11 is connect using internal spline 11.2 with swinging disc 12 and pinion gear 10, naturally it is also possible to use outer flower
Key is connect with swinging disc 12 and pinion gear 10.
Referring to shown in Fig. 2, first support 7, second support 8, spring 9, guide rod 6 and knob 18 have a formation slot after installing
78；The eccentric part 18.1 of knob 18, which is located at, to be formed in slot 78.Preferably, slot 78 is formed to be designed to omit than clutch sleeve flange 11.1
Width between clutch sleeve flange 11.1 and first support 7 and second support 8 is no external pressure when such electric hammer 100 works normally
The contact of power, clutch sleeve 11 will not generate a large amount of frictional heat in rotation.
Referring to Figure 5, the electric hammer of the utility model second embodiment is introduced.Switching mechanism 17 include: first support 7,
Second support 8, the first spring 19, second spring 20, guide rod 6, knob 18 and clutch sleeve 11；First support 7 and second support 8
It perforates and can be moved along guide rod 6,19 one end of the first spring and first support 7 abut, 19 other end of the first spring and opposite
The fixed step (not shown) of casing abuts, and 20 one end of second spring and second support 8 abut, 20 other end of second spring
The step (not shown) fixed with opposite casing abuts；Two springs 19,20 are all in preloading condition；Clutch sleeve 11 wraps
Include clutch sleeve flange 11.1, clutch sleeve spline 11.2；Spline tooth 13.1 on clutch sleeve spline 11.2 and jackshaft is made
With so that clutch sleeve 11 can be moved along 13 axis of jackshaft in a certain range and be rotated together with jackshaft 13.Clutch
Sleeve flange 11.1 includes clutch sleeve flange side 11.1.1 and clutch sleeve flange other side 11.1.2.7 He of first support
Clutch sleeve flange side 11.1.1 is abutted, and second support 8 and clutch sleeve flange other side 11.1.2 are abutted.Knob 18 includes
One eccentric part 18.1, eccentric part 18.1 are placed between first support 7 and second support 8.The elastic force of two springs 19,20 makes first
Bracket 7 and second support 8 are connected on eccentric part 18.1, reach the balance of power.When eccentric part 18.1 drives first support 7 to the right
When mobile, the first further compression of spring 19 releases the abutting force of second support 8, second since eccentric part moves right
Frame then pushes clutch sleeve 11 to move right under the action of 20 elastic force of second spring；Even if encountering clutch sleeve spline tooth 11.3
With pinion gear 10 " tooth is to tooth " position, once electric hammer 100 start, 20 elastic force of second spring by second support 8 also may make from
Trap cylinder 11 moves right；Similarly, when eccentric part 18.1 drives second support 8 to be moved to the left, second spring 20 is further pressed
Contracting releases the abutting force of first support 7, first support is then in the work of 19 elastic force of the first spring since eccentric part is moved to the left
It is moved to the left with lower promotion clutch sleeve 11.So the electric hammer of the utility model second embodiment, switching mechanism 17 can make from
Trap cylinder 11 is moved left and right along 13 axis of jackshaft in a certain range, to make selectively swinging disc 12 of clutch sleeve 11
It is connected with pinion gear 10.The single drill jig formula of electric hammer 100, clutch sleeve 11 and pinion gear 10 connect, clutch sleeve 11 and swinging disc 12
It is disconnected；100 drilling mode of electric hammer, clutch sleeve 11 and pinion gear 10 and swinging disc 12 connect simultaneously；The single chisel mould of electric hammer 100
Formula, clutch sleeve 11 and pinion gear 10 are disconnected, and clutch sleeve 11 and swinging disc 12 connect；100 lock shaft of electric hammer digs mode, from
Trap cylinder 11 and pinion gear 10 are disconnected, and clutch sleeve 11 and swinging disc 12 connect, while locking the entrance of teeth portion 7.1 and pinion gear
10 connections；Preferably, the diameter of eccentric part 18.1 is more bigger than clutch sleeve flange 11.1, and the elastic force of two springs (19,20) is all
It is abutted by eccentric part 18.1, clutch sleeve flange 11.1 and first support 7 and second support 8 when such electric hammer 100 works normally
Between be not external pressure contact, clutch sleeve 11 rotation when will not generate a large amount of frictional heat.
The utility model is not limited to above-mentioned specific embodiment.Those of ordinary skill in the art should be readily understood that
It arrives, under the premise of not departing from the principles of the present invention and scope, also there are many kinds of alternative solutions for the utility model.This is practical
Novel protection scope is subjected to the contents of the claims.
Claims (6)
1. a kind of electric hammer, comprising: motor (1)；The jackshaft (13) being connect with the motor；Rotary components (5)；With the rotation
The gear wheel (4) that component (5) rotates synchronously；The pinion gear (10) engaged with the gear wheel (4)；Impact assembly (3)；With impact
The Oscillating lever bearing (16) of component (3) connection, including installing to the swinging disc (12) of the jackshaft (13) and oscillating rod (2)；It cuts
It changes planes structure (17), comprising: clutch sleeve (11), first support (7), second support (8), elastic element, guide rod (6) and knob
(18)；It is characterized by: clutch sleeve (11), including a flange (11.1) and spline (11.2), it is same with the jackshaft (13)
Step rotation, and can be mobile along the jackshaft (13) axis, and by spline (11.2) optionally with the swinging disc
(12) or the pinion gear (10) connects；The first support (7), second support (8) are perforated and are all moved along the guide rod (6)
It is dynamic, and first support (7) is abutted with clutch sleeve flange (11.1) side, second support (8) and clutch sleeve flange (11.1)
The other side abuts；The knob (18) includes an eccentric part (18.1), and the eccentric part (18.1) is placed in first support (7), the
Between two brackets (8), and the eccentric part (18.1) can make first support or second support be moved to another from a position
Position, then the clutch sleeve (11) is moved to another position from a position under second support or first support effect.
2. electric hammer according to claim 1, it is characterised in that: first support (7), second support (8) intersect installation, described
Elastic element is a spring (9), and the spring (9) both ends are abutted with the first support (7), second support (8) respectively.
3. electric hammer according to claim 1, it is characterised in that: the first support (7), second support (8) are located at described
Eccentric part two sides, and it is non-cross；The elastic element is the first spring (19), second spring (20), and the first spring (19),
Second spring (20) one end is abutted with a bracket in described two brackets, first spring (19), second spring (20)
The other end step fixed with opposite casing abuts.
4. electric hammer according to claim 1, it is characterised in that: first support (7) further includes a lock teeth portion (7.1).
5. electric hammer according to claim 1, it is characterised in that: the clutch sleeve (11) and the pinion gear (10) are made into
One.
6. electric hammer according to claim 1-5, it is characterised in that: first support (7), second support (8) are U-shaped
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820750874.2U CN208557377U (en) | 2018-05-18 | 2018-05-18 | A kind of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820750874.2U CN208557377U (en) | 2018-05-18 | 2018-05-18 | A kind of electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208557377U true CN208557377U (en) | 2019-03-01 |
Family
ID=65482018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820750874.2U Expired - Fee Related CN208557377U (en) | 2018-05-18 | 2018-05-18 | A kind of electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208557377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211233A (en) * | 2021-12-01 | 2022-03-22 | 贵州航天精工制造有限公司 | Bolt thread sleeve mounting method and bolt thread sleeve mounting tool |
-
2018
- 2018-05-18 CN CN201820750874.2U patent/CN208557377U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211233A (en) * | 2021-12-01 | 2022-03-22 | 贵州航天精工制造有限公司 | Bolt thread sleeve mounting method and bolt thread sleeve mounting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 Termination date: 20200518 |