CN202241196U - Shaft lock mechanism for arranging and replacing saw blade of electric tool - Google Patents
Shaft lock mechanism for arranging and replacing saw blade of electric tool Download PDFInfo
- Publication number
- CN202241196U CN202241196U CN2011202459517U CN201120245951U CN202241196U CN 202241196 U CN202241196 U CN 202241196U CN 2011202459517 U CN2011202459517 U CN 2011202459517U CN 201120245951 U CN201120245951 U CN 201120245951U CN 202241196 U CN202241196 U CN 202241196U
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- locking
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- shaft lock
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Abstract
The utility model discloses a shaft lock mechanism for arranging and replacing a saw blade of an electric tool. The shaft lock mechanism comprises a switch, a shaft lock sheet, a shaft lock button and a self-locking structure, wherein the switch is arranged on a machine body, and is used for controlling the electric tool to work; the shaft lock sheet is arranged in the machine body, and is matched with a lock groove in an output lock to lock an output shaft; the shaft lock button is used for operating the shaft lock sheet to lock or unlock the output shaft; and the self-locking structure is arranged between the switch and the shaft lock button, and is used for simultaneously locking or unlocking the switch and the output shaft. The shaft lock mechanism has a reasonable structure, and is safe for use; and an interlocking relation between the switch and the output shaft is realized, i.e., the switch and the output shaft are locked or unlocked simultaneously, and the output shaft cannot be locked during starting and moving of the electric tool and cannot be started when a lock shaft of the electric tool is stopped, so that operating personnel can replace the saw blade quickly, the use safety of the electric tool is ensured, the service life of the electric tool is prolonged, and the personal safety of the operating personnel is ensured.
Description
Technical field
The utility model relates to electric tool, the shaft lock mechanism that particularly a kind of annular saw type electric tool dress changes saw blade.
Background technology
The shaft lock mechanism of annular saw type electric tool is fixed on body cap or the gear shift cover through shaft lock button and spring mostly at present, guarantees its work normally safely.Because saw blade has certain loss in the course of the work; Need change saw blade within a certain period of time, but the such structure of shaft lock button and spring, the annular saw type electric tool need align the shaft lock groove on the output shaft with the shaft lock sheet when changing saw blade; The shaft lock button that press...withes one's finger is operated cumbersome like this; And when changing saw blade, the switch of electric tool exist unexpected touching connect or electric tool in running, the shaft lock button is unexpected possibly to be pressed; Make the collision of shaft lock sheet and output shaft; The lighter damages electric tool, and weight person damages user's person, has big potential safety hazard.
The utility model content
The utility model problem to be solved just provides the shaft lock mechanism that a kind of electric tool rational in infrastructure, safe in utilization dress changes saw blade, need not firmly to pin after pressing the shaft lock button again, and rotary output axis rear axle locking plate will align the shaft lock groove automatically; And electric tool can't normally be opened after pressing the shaft lock button, in the electric tool running, also can't press the shaft lock button.
In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: the shaft lock mechanism that a kind of electric tool dress changes saw blade; Comprise being located at the switch that is used for controlling electric tool work on the body, being located in the body and cooperating the shaft lock sheet that locks output shaft and the shaft lock button of locking of operating axis locking plate or release output shaft with locked groove that output is locked, it is characterized in that: also comprise being located at switch and output shaft quilt being locked simultaneously or the self-locking structure of release.
Further; Said self-locking structure comprises self-locking connecting rod, connecting shaft, is located at the self-locking device I that on the self-locking connecting rod switch is locked and is located at the self-locking device II that on the connecting shaft shaft lock button is locked; And be located at the linkage structure that self-locking device I and self-locking device II are worked simultaneously; The middle part switching of self-locking connecting rod is in body, transfers in body in the connecting shaft end.
Further; Said switch is positioned on the body through spacer; The button of switch passes spacer and is connected on the switch and when button is not pressed and between the spacer and has the gap; Spacer is provided with expansion slot; The upper end of self-locking connecting rod pass expansion slot and when the self-locking connecting rod rotates along the expansion slot slippage; Self-locking device I be located on the self-locking connecting rod from locking plate, corresponding with the space between button and the spacer and after the self-locking small end is near switch, snap in space between button and the spacer and make button can not press or after the self-locking small end is away from switch, break away from from the space between button and the spacer button can be pressed from locking plate, button is against after pressing makes the self-locking small end remain on the position away from switch on locking plate.
Further; Said self-locking device II comprises being fixed on the connecting shaft and being against the locking knob on the shaft lock button and being located at makes the locking knob keep being against the back-moving spring of trend on the shaft lock button between locking knob and the body, and is located at the screens structure I between locking knob and the shaft lock button.
Further; Said screens structure I comprises the bossy body that is located on the locking knob and is located at the screens step on the shaft lock button, bossy body be against on the screens step lower surface and when the connecting shaft locking can not be rotated bossy body prop up the shaft lock button make its can not press or when the connecting shaft release can be rotated the pressing shaft cage knob drive bossy body and make locking knob and connecting shaft rotation.
Further; Said linkage structure comprises the cam and the projection that is located at self-locking connecting rod lower end edge cam place direction protrusion that is located on the connecting shaft near self-locking connecting rod one end; Projection is positioned at the cam top, and the front end face of cam is provided with step, and step is provided with the inclined-plane of vertical cam rear end face; After the self-locking connecting rod rotates the disengage button locking; Corresponding with the inclined-plane on the step away from the downside of self-locking connecting rod transit point on the projection, projection rotates downside to be pressed in block connecting shaft on the inclined-plane with the self-locking connecting rod connecting shaft and locking knob can not be rotated, thereby prop up the shaft lock button by the locking knob it can not be pressed; When self-locking sheet locking press button, the pressing shaft cage knob is with output shaft locking and drive the locking knob and rotate with connecting shaft, and inclined-plane on the step and the downside on the projection misplace, and the upper surface of cam is against on the lower surface of projection self-locking connecting rod lower end can not be rotated.
Further; Be provided with chute in the said body; The shaft lock button is located at slippage up and down in the chute; Between chute bottom surface and shaft lock button, be provided with the elastic reset spare that the shaft lock button is upwards promoted, the shaft lock sheet is fixed on the shaft lock button with move up release output shaft or move down the locking output shaft and be against when the release output shaft and prevent on the body that the shaft lock button is pushed out chute of shaft lock button, between body and shaft lock button, is provided with the shaft lock button is positioned to lock the locational screens structure I of output shaft I.
Further, said screens structure I I comprises the catch that is located in the body and is located at the screens boss on the shaft lock button.
Further, the upper surface of said screens boss is tilt in the screens boss, the bottom surface of catch also be made as the inclined plane and incline direction identical with the upper surface of screens boss.Be obliquely installed and be convenient to snap in, prevent to jump out.
Further, said shaft lock sheet top is provided with the coupler body spiral-lock on the screens boss, between shaft lock sheet and screens boss, is provided with to make the shaft lock sheet keep relative screens boss to move down the elastic component of trend.The effect of elastic component, the one, for avoiding the shaft lock sheet, can't press the shaft lock button not aligning locked groove when arriving on the output shaft, promptly have elastic space between shaft lock button and the shaft lock sheet; The 2nd, do not align locked groove and when arriving on the output shaft at the shaft lock sheet, the shaft lock sheet compression elastic piece that makes progress simultaneously because elastic component produces downward thrust to the shaft lock sheet, makes behind the rotary output axis automatically and locked groove aligns and snap in locked groove.
After adopting technique scheme, the utlity model has following advantage: realize the linkage relationship of switch and output shaft, promptly be locked simultaneously or release; Output shaft can not be locked when electric tool starts and take action; And when electric tool is shut down lock shaft, can not be activated, the handled easily personnel carry out saw blade fast and change, and have guaranteed the security that electric tool uses; Improve the service life of electric tool, guaranteed operating personnel's personal safety.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the entity structure sketch map of a kind of embodiment of the utility model;
Fig. 2 is a right view embodiment illustrated in fig. 1;
Fig. 3 looks the part-structure sketch map for a left side embodiment illustrated in fig. 1;
Fig. 4 is the assembly structure sketch map of shaft lock button and body;
When Fig. 5 is locked for switch between projection and the cam position concern sketch map;
When Fig. 6 is locked for output shaft between projection and the cam position concern sketch map;
Structural representation when Fig. 7 is positioned at locking output shaft position for the shaft lock button;
Structural representation when Fig. 8 is positioned at release output shaft position for the shaft lock button.
The specific embodiment
The structural representation of a kind of embodiment of the utility model shown in Fig. 1 to 8; The shaft lock mechanism that a kind of electric tool dress changes saw blade; Comprise be located at the switch 2 that is used for controlling electric tool work on the body 1, be located in the body with output lock 9 on locked groove 91 cooperates the shaft lock sheet 3 that locks output shaft and the shaft lock button 4 of locking of operating axis locking plate or release output shaft, also comprise being located at switch and output shaft quilt being locked simultaneously or the self-locking structure of release.Said self-locking structure comprises self-locking connecting rod 5, connecting shaft 6, is located at the self-locking device I that on the self-locking connecting rod switch is locked and is located at the self-locking device II that on the connecting shaft shaft lock button is locked; And be located at the linkage structure that self-locking device I and self-locking device II are worked simultaneously; The middle part switching of self-locking connecting rod is in body, transfers in body in the connecting shaft end.
Switch is positioned on the body through spacer 11; The button 21 of switch passes spacer and is connected on the switch and when button is not pressed and between the spacer and has the gap; Spacer is provided with expansion slot 12; The upper end of self-locking connecting rod pass expansion slot and when the self-locking connecting rod rotates along the expansion slot slippage; Self-locking device I be located on the self-locking connecting rod from locking plate 51; Corresponding with the space between button and the spacer and after the self-locking small end is near switch, snap in space between button and the spacer and make button can not press or after the self-locking small end is away from switch, break away from from the space between button and the spacer button can be pressed from locking plate, button is against after pressing makes the self-locking small end remain on the position away from switch on locking plate.Said self-locking device II comprises being fixed on the connecting shaft and being against the locking knob 7 on the shaft lock button and being located at makes the locking knob keep being against the back-moving spring 71 of trend on the shaft lock button between locking knob and the body, and is located at the screens structure I between locking knob and the shaft lock button.Said screens structure I comprises the bossy body that is located on the locking knob 72 and is located at the screens step 41 on the shaft lock button, bossy body be against on the screens step lower surface and when the connecting shaft locking can not be rotated bossy body prop up the shaft lock button make its can not press or when the connecting shaft release can be rotated the pressing shaft cage knob drive bossy body and make locking knob and connecting shaft rotation.Said linkage structure comprises the cam 61 and the projection 52 that is located at self-locking connecting rod lower end edge cam place direction protrusion that is located on the connecting shaft near self-locking connecting rod one end; Projection is positioned at the cam top; The front end face of cam is provided with step 611; Step is provided with the inclined-plane 612 of vertical cam rear end face, and is after the self-locking connecting rod rotates the disengage button locking, corresponding with the inclined-plane on the step away from the downside 521 of self-locking connecting rod transit point on the projection; Projection rotates downside to be pressed in block connecting shaft on the inclined-plane with the self-locking connecting rod connecting shaft and locking knob can not be rotated, thereby prop up the shaft lock button by the locking knob it can not be pressed; When self-locking sheet locking press button, the pressing shaft cage knob is with output shaft locking and drive the locking knob and rotate with connecting shaft, and inclined-plane on the step and the downside on the projection misplace, and the upper surface of cam is against on the lower surface of projection self-locking connecting rod lower end can not be rotated.
In body, be provided with chute 13, the shaft lock button is located at slippage up and down in the chute, between chute bottom surface and shaft lock button, is provided with the elastic reset spare 8 that the shaft lock button is upwards promoted, and in the present embodiment, elastic reset spare also adopts back-moving spring; The shaft lock sheet is fixed on the shaft lock button with move up release output shaft or move down the locking output shaft and be against when the release output shaft and prevent on the body that the shaft lock button is pushed out chute of shaft lock button; Shaft lock sheet top is provided with coupler body 31 spiral-locks on the screens boss, between shaft lock sheet and screens boss, is provided with to make the shaft lock sheet keep relative screens boss to move down the elastic component 32 of trend; Between body and shaft lock button, be provided with the shaft lock button is positioned at the locational screens structure I of locking output shaft I.Said screens structure I I comprises the catch 14 that is located in the body and is located at the screens boss 42 on the shaft lock button.
In the foregoing description, the upper surface 421 of screens boss tilt in the screens boss, the bottom surface of catch be made as the inclined plane and incline direction identical with the upper surface of screens boss.
The principle of the utility model specifically is divided into following three parts:
When 1, needing to start electric tool.Switch is in released state, and output shaft is in released state, and the button of ability Push switch rotates output shaft like this; Break away from space button and spacer between from locking plate this moment, and the screens boss of shaft lock button also separates with catch, and the upper end of self-locking connecting rod is away from button; The lower end of self-locking connecting rod correspondingly rotates; Projection is along with self-locking connecting rod lower ends downward is rotated, and as shown in Figure 5, projection is pressed on the inclined-plane of the step on the cam; From Fig. 2, look, cause connecting shaft and locking knob not to rotate counterclockwise exactly, just the bossy body on the locking knob can not move down; Certainly, bossy body is against on the screens step of shaft lock button and can not moves up, and the relative body with the locking knob of connecting shaft this moment remains static; And being auxiliary lug, back-moving spring make connecting shaft and locking knob remain on inactive state; The shaft lock button can not be pressed like this, and just output shaft can not be locked, and guarantees the security when electric tool starts.
2, during the electric tool continuous firing.After electric tool starts; Want continuous firing will continue to pin the button of switch; Because button is against after pressing and on locking plate, makes the self-locking small end remain on the position away from switch, can not get back to the position of locking press button from locking plate, so the shaft lock button also just keeps being in the state that can not be pressed; Be that output shaft can not be locked, guarantee the security in the electric tool work.
When 3, needing electric tool to shut down lock shaft.Because switch and output shaft are linkage relationship, promptly are locked simultaneously or are unlocked simultaneously, therefore when the needs electric tool is shut down lock shaft; The button of trip switch is looked from Fig. 2, and the self-locking connecting rod is rotated counterclockwise; The upper end that is the self-locking connecting rod moves down, and the lower end of self-locking connecting rod moves up, and the space that snaps between button and the spacer from locking plate is locked switch; And projection moves up along with the lower end of self-locking connecting rod, and the inclined-plane of projection and cam is broken away from, and is as shown in Figure 6; Connecting shaft and locking knob just no longer by the projection locking, that is to say that the shaft lock button no longer is locked like this, only need to use an active force that overcomes the spring force of back-moving spring the shaft lock button to be pressed and made the screens boss and the catch of shaft lock button block downwards; When the shaft lock button moves down; Bossy body on the locking knob also is pressed downward, and from Fig. 2, looks, and can make the locking knob drive connecting shaft and rotate counterclockwise; The upper surface of cam just has been against on the lower surface of projection self-locking connecting rod lower end can not be rotated like this, and promptly switch can not be unlocked; And the shaft lock sheet moves down along with the shaft lock button, makes locked groove and shaft lock sheet at once when output shaft turns to certain position, and the shaft lock sheet is pressed into locked groove by elastic component, thereby the locking output shaft is shut down electric tool safety, and the handled easily personnel carry out saw blade and change.This moment, the button of switch can not be pressed, and electric tool can not be activated, and had avoided the danger of mistake by the pushbutton enable electric tool of switch.
Except that above-mentioned preferred embodiment; The utility model also has other embodiment; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.
Claims (10)
1. an electric tool is adorned the shaft lock mechanism that changes saw blade; Comprise be located at the switch (2) that is used for controlling electric tool work on the body (1), be located in the body with output lock (9) on locked groove (91) cooperates the shaft lock sheet (3) that locks output shaft and the shaft lock button (4) of locking of operating axis locking plate or release output shaft, it is characterized in that: also comprise being located at switch and output shaft quilt being locked simultaneously or the self-locking structure of release.
2. the shaft lock mechanism that a kind of electric tool dress according to claim 1 changes saw blade; It is characterized in that: said self-locking structure comprises self-locking connecting rod (5), connecting shaft (6), is located at the self-locking device I that on the self-locking connecting rod switch is locked and is located at the self-locking device II that on the connecting shaft shaft lock button is locked; And be located at the linkage structure that self-locking device I and self-locking device II are worked simultaneously; The middle part switching of self-locking connecting rod is in body, transfers in body in the connecting shaft end.
3. the shaft lock mechanism that a kind of electric tool dress according to claim 2 changes saw blade; It is characterized in that: said switch is positioned on the body through spacer (11); The button of switch (21) passes spacer and is connected on the switch and when button is not pressed and between the spacer and has the gap; Spacer is provided with expansion slot (12); The upper end of self-locking connecting rod pass expansion slot and when the self-locking connecting rod rotates along the expansion slot slippage; Self-locking device I be located on the self-locking connecting rod from locking plate (51); Corresponding with the space between button and the spacer and after the self-locking small end is near switch, snap in space between button and the spacer and make button can not press or after the self-locking small end is away from switch, break away from from the space between button and the spacer button can be pressed from locking plate, button is against after pressing makes the self-locking small end remain on the position away from switch on locking plate.
4. the shaft lock mechanism that a kind of electric tool dress according to claim 2 changes saw blade; It is characterized in that: said self-locking device II comprises being fixed on the connecting shaft and being against the locking knob (7) on the shaft lock button and being located at makes the locking knob keep being against the back-moving spring (71) of trend on the shaft lock button between locking knob and the body, and is located at the screens structure I between locking knob and the shaft lock button.
5. the shaft lock mechanism that a kind of electric tool dress according to claim 4 changes saw blade; It is characterized in that: said screens structure I comprises the bossy body (72) that is located on the locking knob and is located at the screens step (41) on the shaft lock button, bossy body be against on the screens step lower surface and when the connecting shaft locking can not be rotated bossy body prop up the shaft lock button make its can not press or when the connecting shaft release can be rotated the pressing shaft cage knob drive bossy body and make locking knob and connecting shaft rotation.
6. the shaft lock mechanism that a kind of electric tool dress according to claim 2 changes saw blade; It is characterized in that: said linkage structure comprises and is located on the connecting shaft near the cam (61) of self-locking connecting rod one end and is located at the projection (52) of self-locking connecting rod lower end edge cam place direction protrusion; Projection is positioned at the cam top; The front end face of cam is provided with step (611); Step is provided with the inclined-plane (612) of vertical cam rear end face, and after the self-locking connecting rod rotated the disengage button locking, the downside (521) away from self-locking connecting rod transit point on the projection was corresponding with the inclined-plane on the step; Projection rotates downside to be pressed in block connecting shaft on the inclined-plane with the self-locking connecting rod connecting shaft and locking knob can not be rotated, thereby prop up the shaft lock button by the locking knob it can not be pressed; When self-locking sheet locking press button, the pressing shaft cage knob is with output shaft locking and drive the locking knob and rotate with connecting shaft, and inclined-plane on the step and the downside on the projection misplace, and the upper surface of cam is against on the lower surface of projection self-locking connecting rod lower end can not be rotated.
7. the shaft lock mechanism that a kind of electric tool dress according to claim 1 and 2 changes saw blade; It is characterized in that: be provided with chute (13) in the said body; The shaft lock button is located at slippage up and down in the chute; Between chute bottom surface and shaft lock button, be provided with the elastic reset spare (8) that the shaft lock button is upwards promoted; The shaft lock sheet is fixed on the shaft lock button with move up release output shaft or move down the locking output shaft and be against when the release output shaft and prevent on the body that the shaft lock button is pushed out chute of shaft lock button, between body and shaft lock button, is provided with the shaft lock button is positioned to lock the locational screens structure I of output shaft I.
8. the shaft lock mechanism that a kind of electric tool dress according to claim 7 changes saw blade, it is characterized in that: said screens structure I I comprises the catch (14) that is located in the body and is located at the screens boss (42) on the shaft lock button.
9. the shaft lock mechanism that a kind of electric tool dress according to claim 8 changes saw blade; It is characterized in that: the upper surface of said screens boss (421) tilt in the screens boss, the bottom surface of catch be made as the inclined plane and incline direction identical with the upper surface of screens boss.
10. the shaft lock mechanism that a kind of electric tool dress according to claim 8 changes saw blade; It is characterized in that: said shaft lock sheet top is provided with coupler body (31) spiral-lock on the screens boss, between shaft lock sheet and screens boss, is provided with to make the shaft lock sheet keep relative screens boss to move down the elastic component of trend (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202459517U CN202241196U (en) | 2011-07-13 | 2011-07-13 | Shaft lock mechanism for arranging and replacing saw blade of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202459517U CN202241196U (en) | 2011-07-13 | 2011-07-13 | Shaft lock mechanism for arranging and replacing saw blade of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241196U true CN202241196U (en) | 2012-05-30 |
Family
ID=46102491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202459517U Expired - Lifetime CN202241196U (en) | 2011-07-13 | 2011-07-13 | Shaft lock mechanism for arranging and replacing saw blade of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241196U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308259A (en) * | 2014-09-04 | 2015-01-28 | 江苏苏美达五金工具有限公司 | Handheld cut-in type electric circular saw |
| CN107999870A (en) * | 2016-10-28 | 2018-05-08 | 苏州宝时得电动工具有限公司 | Electric tool |
-
2011
- 2011-07-13 CN CN2011202459517U patent/CN202241196U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308259A (en) * | 2014-09-04 | 2015-01-28 | 江苏苏美达五金工具有限公司 | Handheld cut-in type electric circular saw |
| CN104308259B (en) * | 2014-09-04 | 2017-04-12 | 江苏苏美达五金工具有限公司 | Handheld cut-in type electric circular saw |
| CN107999870A (en) * | 2016-10-28 | 2018-05-08 | 苏州宝时得电动工具有限公司 | Electric tool |
| CN107999870B (en) * | 2016-10-28 | 2019-10-18 | 苏州宝时得电动工具有限公司 | Electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |