CN101673124B - Knob device - Google Patents
Knob device Download PDFInfo
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- CN101673124B CN101673124B CN2008101489560A CN200810148956A CN101673124B CN 101673124 B CN101673124 B CN 101673124B CN 2008101489560 A CN2008101489560 A CN 2008101489560A CN 200810148956 A CN200810148956 A CN 200810148956A CN 101673124 B CN101673124 B CN 101673124B
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- knob
- housing
- knob assembly
- annular groove
- annular boss
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Abstract
The invention relates to a knob device, which comprises a shell, wherein the shell and a knob detachably arranged on the shell, wherein one of the shell and the knob is provided with an annular groove; the other of the shell and the knob is provided with an annular lug boss corresponding to the annular groove; and a locking element for axially connecting the shell and the knob and a first elastic element for radially pressing against the locking element are arranged between the annular groove and the annular lug boss. The knob device is simple in structure and reliable in installation.
Description
Technical field
The present invention relates to a kind of knob assembly.
Background technology
Electrical equipment from daily life; To various instruments, equipment, and the existence that all can see knob assembly on the various tool, utilize knob assembly can carry out operations such as speed regulation, mode switch, gear selection; Especially on electric tool, be unable to do without knob assembly especially; Carry out the function conversion of electric tool through knob assembly, make simpler to the operation of electric tool, convenient.
European patent EP 0437716B1 discloses a kind of function conversion knob structure on the electric hand tool, that have at least two operator schemes that is installed on; It has can be installed in the knob spare on the housing, and described knob spare is provided with and protrudes in knob spare and away from the selector bar at knob spare center.Knob spare cooperates through teeth groove and is inserted into rotary shifted dismountable being installed on the housing behind the housing, and knob spare is provided with spring-loaded change-over switch, and change-over switch can be locked in the groove on the housing wall.Though function conversion knob structure installs fairly simple; But the certain angle that cooperates at teeth groove when installing is installed, and in the process of knob rotation, still can rotate to the angle of installation, and this moment, knob can take out from housing easily; So it is installed and is unreliable.
For this reason, prior art is necessary further improvement in fact.
Summary of the invention
To the deficiency of prior art, the object of the present invention is to provide a kind of simple in structure, the knob assembly of reliable installation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of knob assembly; Comprise: housing, dismountable knob that is installed on the housing; Described housing and described knob the two one of be provided with annular groove; The two another of described housing and described knob is provided with annular boss, is provided with axial first flexible member that is connected the locking member of housing and knob and radially compresses locking member between said annular groove and the said annular boss.
Preferably, described annular groove is arranged on the housing, and described annular boss is arranged on the knob, and described locking member is installed between annular groove and the annular boss and first flexible member of the effect through radial force is connected to knob on the housing.
The invention has the beneficial effects as follows: knob assembly of the present invention adopts less part to be assembled, and is simple in structure, and need overcome the elastic force of loading the dismounting knob time, so reliable installation.
Description of drawings
Do further explain below in conjunction with accompanying drawing and the preferred embodiments of the present invention.
Fig. 1 is applied in electric tool for knob assembly of the present invention, like the synoptic diagram on the electric hammer.
Fig. 2 is the phantom view of knob assembly of the present invention along A-A line among Fig. 1.
Fig. 3 is the phantom view of knob assembly of the present invention along B-B line among Fig. 2.
Fig. 4 is the phantom view of knob assembly of the present invention along C-C line among Fig. 2, and this moment, knob was in the position of one of them functional mode.
Fig. 5 is the phantom view of knob assembly of the present invention along C-C line among Fig. 2, and this moment, knob was in the position in the adjustment process.
Wherein, the related elements reference numeral is following:
1. housing 2. knobs 3. first flexible members
4. second flexible member, 5. locking members, 6. setting elements
7.O type circle 8. driving levers 11. protuberances
12. function Warning Mark 13. through holes 14. annular grooves
15. external annulus 16. internal ring walls 21. handles
22. round plate 23. main bodys 24. annular boss
25. first step 26. second steps 151. slots
161. locating slot 251. first perforation 261. second perforation
212. arrow
Embodiment
With reference to Fig. 1, a kind of knob assembly, it can be arranged on the electric tool, especially on the electric hammer.Housing 1 is provided with function Warning Mark 12, is used to indicate the different functions pattern.These Warning Marks 12 are provided with around knob 2 peripheries.
With reference to Fig. 2, knob assembly comprises housing 1, be installed in knob 2 on the housing 1, first flexible member 3, second flexible member 4, locking member 5, setting element 6.Housing 1 is provided with annular groove 14, and knob 2 is provided with annular boss 24, and locking member 5 is arranged between annular groove 14 and the annular boss 24 and first flexible member 3 through the radial force effect is connected to knob 2 on the housing 1; Setting element 6 also is arranged between annular groove 14 and the annular boss 24 and second flexible member 4 through the radial force effect makes knob 2 with respect to housing 1 several fixing positions arranged.The operator arrives different positions to select the different functions pattern through rotary knob 2.
Continuation is with reference to Fig. 2, and housing 1 is provided with protuberance 11, is used for as the pedestal that knob 2 is installed; Protuberance 11 is provided with a through hole 13; Through hole 13 has axis X, has annular groove 14 around axis X axial direction along through hole 13 on the end face of protuberance 11, and annular groove 14 has external annulus 15 and internal ring wall 16 with respect to axis X; Be provided with slot 151 around axis X on the external annulus 15, be arranged at intervals with a plurality of locating slots 161 around axis X on the internal ring wall 16.The end face that locating slot 161 is parallel to axis X setting and opening and protuberance 11 communicates.In a preferred embodiment, locating slot 161 is 4, around each anglec of rotation setting of an angle of 90 degrees at interval of axis X.
Knob 2 comprises handle 21, round plate 22 and main body 23.Handle 21 is made as " one " font and protrudes from round plate 22 and is positioned at the one side outside the housing 1, and handle 21 handled easily persons operate knob 2.Handle 21 is provided with arrow 212, like this, in operation, comes rotary knob 2 through arrow 212 is aimed at different functions Warning Mark 12, and the operator can be clear that instrument present located functional mode.Round plate 22 is provided with the main body 23 of the cylindrical shape that protrudes from round plate 22 along the direction that deviates from handle 21.The diameter of the diameter of main body 23 and through hole 13 about equally.The round plate 22 of knob 2 is provided with annular boss 24, and the degree of depth of annular groove 14 is greater than the height of annular boss 24, and like this, knob 2 can directly be installed on the housing 1 through the cooperation of main body 23, annular boss 24 and through hole 13, annular groove 14.O type circle 7 can be set between main body 23 and through hole 13 increases the sealing of knob 2.Off-centre is equipped with driving lever 8 on the main body 23, when rotary knob 2, can make driving lever 8 rotate to different positions like this.The gear train of driving lever 8 and instrument (figure does not show) is connected, and drive driving lever 8 through rotary knob 2 and rotate around axis X, thus the state of change gear train, the conversion of the difference in functionality pattern of implementation tool.
In order to make knob 2 conveniently be installed in the instrument; Annular boss 24 is made as step-like and includes first step 25 and second step 26 along the radial direction of main body 23; The outside surface of first step 25 contacts with external annulus 15, and the inside surface of second step 26 contacts with internal ring wall 16.
With reference to Fig. 3; First step 25 is radially spaced to be provided with a plurality of first perforation 251; A plurality of locking members 5 are contained in first perforation 251; First flexible member 3 is arranged between internal ring wall 16 and the first step 25, and is close to the inside surface of first step 25, so as to first steel ball anchorage force radially is provided.In dismounting knob 2, need locking member 5 to overcome first flexible member, 3 radial elastic acting forces, so it is the elastic acting force that locking member more than 5 need overcome is just big more, firmly just big more during dismounting knob 2; Otherwise; When locking member 5 had only one, dismounting knob 2 needed the strength of cost just smaller, thereby makes that the installation of knob 2 is not too firm; So the present invention is provided with 3 locking members 5; Corresponding 3 first perforation 251 are set, dismounting knob 2 elastic acting force that need overcome is moderate like this, and the installation of knob 2 is also reliable.
First flexible member 3 is spring leafs of non-enclosed toroidal, and it has two ends, and an end fixed card is located in the first step 25, and the other end is a free end, helps the elastic deformation of spring leaf like this.Certainly; First flexible member 3 also is not limited to the shape described in the embodiment of the invention; Promptly so long as can give the flexible member that locking member 5 provides the effect of radial elastic power just can embodiment of the present invention, just can be used as first flexible member 3 like the compression spring that radially is provided with along annular groove 14 and elastic reaction radially is provided to locking member 5.Thereby the present invention adopts the spring leaf of annular to save the space more makes the structure of whole knob assembly simpler.
The radial width of first step 25 is less than the diameter of locking member 5, and like this, locking member 5 protrudes from first perforation 251 and just is stuck in the slot 151, and knob 2 is axially locked on housing 1 through locking member 5.In a preferred embodiment of the invention, locking member 5 is steel balls, and the rotation that steel ball more helps knob 2 is set.Certainly, locking member 5 be so long as can be stuck in the slot 151 and the element of the Any shape that can roll along slot 151 can embodiment of the present invention, just can be used as locking member 5 such as the steel column of cylindrical shape and realizes knob 2 is connected on the housing 1.
When knob 2 being installed to 1 last time of housing; With locking member 5 put into first the perforation 251 and radially oppress first flexible member 3 cause its distortion, then along the axis X towards the direction of housing 1, with main body 23 aligned through holes 13; Annular boss 24 alignment ring connected in stars 14 push away in housing 1; Till hearing that the sound or locking member 5 are stuck, this moment, knob 2 can rotate around axis X, but can not move along the axis X axis.Like this, through having realized the installation of knob 2 on housing 1 at the locking member 5 and first flexible member 3 that are provided with on the knob 2.When needs disassembled knob 2, only firmly X was to drawing away from the direction of housing 1 along the axis with knob 2 for need, and locking member 5 is radially oppressed 3 distortion of first flexible member and withdrawed from slot 151, and knob 2 can be removed.
With reference to Fig. 4; Second step 26 radially is provided with second perforation 261, and setting element 6 is contained in second perforation 261, and second flexible member 4 is arranged between external annulus 15 and the second step 26; And be close to the outside surface of second step 26, so as to setting element 6 anchorage force radially is provided.Like this, an end of second accepting hole 261 is just blocked by second flexible member 4.Second flexible member 4 is spring leafs of non-enclosed toroidal, and it has two ends, and an end fixed card is located in the second step 26, and the other end is a free end, helps the elastic deformation of spring leaf like this.Certainly; Second flexible member 4 also is not limited to the shape described in the embodiment of the invention; Promptly so long as can give the flexible member that setting element 6 provides the effect of radial elastic power just can embodiment of the present invention, just can be used as second flexible member 4 like the compression spring that radially is provided with along annular groove 14 and elastic reaction radially is provided to setting element 6.Thereby the present invention adopts the spring leaf of annular to save the space more makes the structure of whole knob assembly simpler.
The radial width of second step 26 is less than the diameter of setting element 6, and promptly setting element 6 is contained in second perforation 261 and protrudes from the inside surface of second step 26 and be stuck in simultaneously in the locating slot 161.In a preferred embodiment of the invention, setting element 6 is steel balls, and steel ball can so just help the location of knob 2 than being easier to snap in the locating slot 161.Certainly, setting element 6 be so long as can be stuck in the locating slot 161 and the element of the Any shape that can roll along internal ring wall 16 can embodiment of the present invention, just can be used as setting element 6 such as the steel column of cylindrical shape and realizes the location of knob 2 with respect to housing 1.Use knob 2 carry out the functional mode conversion be about to knob 2 with respect to the housing location in, setting element 6 overcomes second flexible member, 4 radial elastic acting forces and crosses locating slot 161, certainly; Setting element 6 is many more; The elastic acting force that need overcome when rotary knob 2 positions is just big more, and it is just hard more to operate, so; The present invention is provided with a setting element, makes that carry out that functional mode selects is that rotary knob 2 positions the time ratio and is easier to.
When knob 2 is installed; Setting element 6 is parallel to the direction of axis X and in housing 1, installs along locating slot 161; Being stuck when locking member 5 that groove 151 blocks is that knob 2 can be that the selection of functional mode just can be carried out when being rotated in the center with axis X, when needs are selected other a kind of functional mode, needs slightly firmly rotary knob 2; Make setting element 6 radially oppress second flexible member 4 and cause its elastic deformation that setting element 6 breaks away from locating slot 161 and contacts with internal ring wall 16.Like this, just can continue to select another functional mode.Same, realized that through the setting element 6 that on knob 2, is provided with and second flexible member 4 knob 2 also promptly realized the selection of electric hammer difference in functionality pattern in the location of diverse location with respect to housing 1.
When needs change the functional mode of electric hammer, just can realize through adjusting knob 2.To specify the adjustment process of knob 2 below.
Continuation is with reference to Fig. 4, and this moment, instrument was in wherein a kind of mode of operation, in the time need changing to another kind of mode of operation in the use, can perhaps be rotated counterclockwise knob 2 clockwise through operating grip 21 and realize.Further with reference to Fig. 5; Operating grip 21 is along direction of arrow rotary knob 2; Setting element 6 radial effect power are in second flexible member 4; Make second flexible member, 4 elastic deformations, setting element 6 breaks away from locating slots 161 and in internal ring wall 16 contacts, and setting element 6 falls into another locating slot 161 again during the position of continuing to rotate to the mode of operation that needs under the radial effect power of second flexible member 4.
In field of power tools; General knob assembly all links to each other with the gear train of electric tool; So require the reliable installation of knob 2; Especially can not be easily in the process of operation knob 2 be pulled down from electric tool, and knob assembly of the present invention can satisfy the requirement that is installed on the electric tool fully.Can be applicable in the U.S. Pat 7331496 on the disclosed hammer drill instrument like the present invention.
Knob assembly provided by the present invention has been realized the installation and the location of knob 2 through spring leaf and steel ball are set, and is simple in structure, and in use can not easily knob 2 be pulled down from housing 1, and reliable installation helps on industry, applying.
Claims (11)
1. knob assembly; Comprise housing (1); Described housing (1) is the housing (1) of electric tool; Dismountable knob (2) that is installed on the housing (1); It is characterized in that: said housing (1) is provided with annular groove (14), and said knob (2) is provided with annular boss (24), is provided with axial housing (1) and the locking member (5) of knob (2) and first flexible member (3) that radially compresses locking member (5) of being connected between said annular groove (14) and the said annular boss (24); Radially be provided with a plurality of first perforation (251) on the described annular boss (24); Described locking member (5) is contained in described first perforation (251), and described annular groove (14) includes external annulus (15) and internal ring wall (16), and described external annulus (15) is provided with slot (151) in a circumferential direction; Described locking member (5) is arranged in first perforation (251) and the slot (161) simultaneously, is provided with knob (2) between said annular groove (14) and the said annular boss (24) with respect to the setting element (6) of housing (1) rotation and second flexible member (4) that radially compresses setting element (6).
2. knob assembly as claimed in claim 1 is characterized in that: described knob (2) includes the main body (23) of cylindrical shape, and described annular boss (24) is coaxial and be provided with around main body (23) with main body (23).
3. knob assembly as claimed in claim 2; It is characterized in that: described housing (1) is provided with the through hole (13) that connects knob; Described through hole (13) has axis X, and described annular groove (14) is that the center is opened on the described housing (1) with axis X.
4. knob assembly as claimed in claim 3 is characterized in that: described main body (23) is installed in the described through hole (13), and described annular boss (24) is installed in the described annular groove (14).
5. knob assembly as claimed in claim 1 is characterized in that: described locking member (5) is at least one steel ball.
6. knob assembly as claimed in claim 1; It is characterized in that: described first flexible member (3) is the spring leaf of non-enclosed toroidal; Described spring leaf has two ends, and an end fixed card is located on the annular boss (24), and the other end is a free end.
7. knob assembly as claimed in claim 1 is characterized in that: radially be provided with at least one second perforation (261) on the described annular boss (24), described setting element (6) is contained in described second perforation (261).
8. knob assembly as claimed in claim 7; It is characterized in that: described annular groove (14) includes external annulus (15) and internal ring wall (16); Described internal ring wall (16) is arranged at intervals with a plurality of locating slots (161) at circumferencial direction, and described setting element (6) is arranged in second perforation (261) and the locating slot (161) simultaneously.
9. knob assembly as claimed in claim 1; It is characterized in that: described annular boss (24) comprises first step (25) and second step (26) for step shape; Described annular groove (14) includes external annulus (15) and internal ring wall (16); Described first flexible member (3) is arranged between first step (25) and the internal ring wall (16), and described second flexible member (4) is arranged between second step (26) and the external annulus (15).
10. knob assembly as claimed in claim 1 is characterized in that: described setting element (6) is at least one steel ball.
11. knob assembly as claimed in claim 1; It is characterized in that: described second flexible member (4) is the spring leaf of non-enclosed toroidal; Described spring leaf has two ends, and an end fixed card is located on the annular boss (24), and the other end is a free end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101489560A CN101673124B (en) | 2008-09-12 | 2008-09-12 | Knob device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101489560A CN101673124B (en) | 2008-09-12 | 2008-09-12 | Knob device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101673124A CN101673124A (en) | 2010-03-17 |
| CN101673124B true CN101673124B (en) | 2012-04-25 |
Family
ID=42020377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101489560A Expired - Fee Related CN101673124B (en) | 2008-09-12 | 2008-09-12 | Knob device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101673124B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339086B (en) * | 2010-07-27 | 2013-11-20 | 巍世科技有限公司 | Rotary controls with displacement transducers without moving electrical contacts |
| CN104476399A (en) * | 2014-12-03 | 2015-04-01 | 无锡市翱宇特新科技发展有限公司 | Fixing knob |
| CN105892556B (en) * | 2016-06-29 | 2018-06-19 | 广东美的厨房电器制造有限公司 | A kind of scalable knob |
| FI11915U1 (en) * | 2017-11-22 | 2018-01-05 | Abb Oy | Twist handle for a switch |
| CN113231993B (en) * | 2021-06-08 | 2022-09-02 | 重庆弘愿工具(集团)有限公司 | Knob subassembly and electric hammer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201096A (en) * | 1977-12-19 | 1980-05-06 | Raytheon Company | Spring lock knob assembly |
| CN2423066Y (en) * | 2000-05-23 | 2001-03-14 | 正峰工业股份有限公司 | Knob mechanism that produces sound and positioning effects when turned |
| CN2598690Y (en) * | 2003-01-22 | 2004-01-14 | 徐斌 | Self-locking safety fast changeable joint |
| CN1691234A (en) * | 2004-04-28 | 2005-11-02 | Trw车辆电气与零件有限两合公司 | Rotary switch |
| CN2821833Y (en) * | 2005-09-05 | 2006-09-27 | 上海天逸电器有限公司 | Quick connection locking mechanism of knob switch |
| CN101258355A (en) * | 2005-06-09 | 2008-09-03 | 福士汽车配套部件责任有限公司 | Connection device for media lines |
| CN201335999Y (en) * | 2008-09-18 | 2009-10-28 | 苏州宝时得电动工具有限公司 | Knob device |
-
2008
- 2008-09-12 CN CN2008101489560A patent/CN101673124B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201096A (en) * | 1977-12-19 | 1980-05-06 | Raytheon Company | Spring lock knob assembly |
| CN2423066Y (en) * | 2000-05-23 | 2001-03-14 | 正峰工业股份有限公司 | Knob mechanism that produces sound and positioning effects when turned |
| CN2598690Y (en) * | 2003-01-22 | 2004-01-14 | 徐斌 | Self-locking safety fast changeable joint |
| CN1691234A (en) * | 2004-04-28 | 2005-11-02 | Trw车辆电气与零件有限两合公司 | Rotary switch |
| CN101258355A (en) * | 2005-06-09 | 2008-09-03 | 福士汽车配套部件责任有限公司 | Connection device for media lines |
| CN2821833Y (en) * | 2005-09-05 | 2006-09-27 | 上海天逸电器有限公司 | Quick connection locking mechanism of knob switch |
| CN201335999Y (en) * | 2008-09-18 | 2009-10-28 | 苏州宝时得电动工具有限公司 | Knob device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101673124A (en) | 2010-03-17 |
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