CN2832377Y - Self-locking hand-screwed drill chuck - Google Patents
Self-locking hand-screwed drill chuck Download PDFInfo
- Publication number
- CN2832377Y CN2832377Y CN 200520115941 CN200520115941U CN2832377Y CN 2832377 Y CN2832377 Y CN 2832377Y CN 200520115941 CN200520115941 CN 200520115941 CN 200520115941 U CN200520115941 U CN 200520115941U CN 2832377 Y CN2832377 Y CN 2832377Y
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- China
- Prior art keywords
- nut
- spring leaf
- rotary sleeve
- self
- locking
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Abstract
The utility model provides a self-locking hand-tightening drill chuck, which comprises a drill body, a chucking jaw, a nut forming a screw-thread connection with the chucking jaw, and a rotary sleeve axially limited for operating the nut. The utility model is also provided with a spring piece performing the self-locking function, wherein the spring piece matches and is connected with the nut, and rotates with the nut together; the spring piece is provided with a locking end. The drill body is provided with a saw tooth ring matching with a unidirectional tooth lock of the locking end of the spring piece. The inner wall of the rotary sleeve is provided with a structure connected with the spring piece, and is also provided with a structure for controlling the matching state of the spring piece and the saw tooth ring, wherein the structure for controlling the matching state of the spring piece and the saw tooth ring comprises a metal piece which can press the spring piece at the side of the locking end of the spring piece when the utility model is in the self-locking state. The utility model has the advantages of simple structure, convenient operation, excellent handle and long and stable self-locking function. The utility model not only can be applied to a single-set drill chuck, but also can be applied to a double-set drill chuck.
Description
Technical field
The utility model relates to a kind of drill chuck, relates in particular to a kind of for example drill chuck on the drilling machine of machining equipment and electric tool that is installed in.
Background technology
In the prior art, be provided with the rotary sleeve of drill body, jaw, nut, operating nut in the hand fastening drill clutch, three jaws are separately positioned in three inclined holes that are distributed on the drill body, adopt between nut and the jaw and be threaded, jaw passes in and out in inclined hole to clamp or the drilling tool that gets loose thereby the operation rotary sleeve drives nut rotation drive, the mode of rotary sleeve operating nut can be that rotary sleeve directly is connected with nut and drives nut, also can be to be connected indirectly with nut, and torsion be passed to nut to drive nut by intermediary element by one or several intermediary element.The shortcoming of this drill chuck is: under the load that the is hit effect, the drill bit of jaw clamping is easily loosening to skid even comes off, and is difficult to keep the continuity of processing.
For this reason, the hand fastening drill clutch of band auto-lock function is arranged at present, overcoming above-mentioned defective, but the structure more complicated is not strong from latching operation and clamp operation continuity, the convenience that influence is operated.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of novel self-locking hand fastening drill clutch simple in structure.For this reason, the utility model is by the following technical solutions: it comprises drill body, jaw, the nut that is threaded with jaw, the rotary sleeve of axially limited operating nut, it also has been provided with the spring leaf of self-locking action, spring leaf is connected with nut and rotates, spring leaf has the lock end, drill body is provided with the sawtooth circle of holding unidirectional tooth lock to cooperate with the lock of spring leaf, the rotary sleeve inwall is provided with the structure that is connected with spring leaf, the rotary sleeve inwall also is provided with the structure of control spring sheet and sawtooth circle mated condition, comprises the sheet metal that withstands spring leaf when being in self-locking state in that side of spring mortice lock end in the structure of control spring sheet and sawtooth circle mated condition.Owing to adopt above technical scheme, the utility model solves the self-locking problem of drill chuck by making nut and drill body lock fit, and structure is more simple, can be applied to single cover drill chuck and also can be applied to two cover drill chucks.The self-locking operational motion is identical with the clamp operation direction of action, becomes the continuity of clamp operation action, more meets use habit, and it is more convenient to operate, and feel is very good.And what have outstanding effect is that when self-locking state, the employing sheet metal withstands spring leaf, in use, can resist the reaction force of spring leaf, guarantees that the auto-lock function of drill chuck is stable for a long time, prolongs the service life of drill chuck.
The utility model also can be provided with the round element with the nut interference fit, and described spring leaf is provided with the installation position, and by the round element installation position is sandwiched between round element and the nut, and spring leaf and nut are connected.Like this, the processing of the part of being more convenient for and assembling, it is stronger to lock strength simultaneously.Certainly, the connected mode between spring leaf and the nut is not limited thereto, such as; The upper surface of nut is provided with the mounting groove of the element of band spring leaf, and the element of band spring leaf is provided with the installation position that is connected with mounting groove.Such as: the rear of nut is provided with ball, and the element of band spring leaf is provided with the installation position that is round, and the installation position is sandwiched between nut and the ball, also is provided with the structure of transmitting torsion between installation position and the nut.
Described rotary sleeve can be that a main body is the part that plastics are made, and sheet metal is inserted in the corresponding site of rotary sleeve inwall.Described rotary sleeve also can be that a main body is metal part, like this, rotary sleeve can overlap in inwall is provided with plastics, should interiorly overlap a part that can be regarded as rotary sleeve, the corresponding site of cover inwall in sheet metal is inserted in, like this, can reduce the metal consumption of rotary sleeve, alleviate the weight of rotary sleeve.
The sawtooth circle is located at the mode on the drill body, can be the surface that is molded directly within drill body, also can earlier the sawtooth circle be made a round element, and then be installed to the surface of drill body, the sawtooth circle can be located at the different parts of drill body, both can be in nut the place ahead and also can be in rear nut.
The set-up mode of sawtooth circle can also adopt other modes.Such as, a part that links together with drill body is set earlier, such as a sleeve, then the sawtooth circle is molded directly within the surface of sleeve, perhaps also can earlier the sawtooth circle be made a round element, and then be installed to the surface of sleeve, this sleeve can be the interior cover that is connected with the drill body front end, in two cover drill chucks, this sleeve also can adopt in the drill chuck the back cover of drill body motion relatively.For another example, drill body is provided with step in the rear end of nut, and the sawtooth circle is folded between step and the nut, utilizes drill chuck when clamp operation and boring work, the reaction force backward that nut is subjected to makes the sawtooth circle be clamped by the step on nut and the drill body when boring.
The rotary sleeve inwall is provided with the transposition groove, and nut is provided with the transposition key that is in the transposition groove.Like this, be convenient to locking and clamp operation, be beneficial to the clamping force when improving the drill chuck clamping.
Description of drawings
Fig. 1 partly cuts open schematic diagram for the utility model embodiment's 1.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the cutaway view of interior cover among the embodiment 1.
Fig. 4 is the B-B cutaway view of Fig. 3.
Fig. 5 is the another kind of structure chart of interior cover.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 partly cuts open schematic diagram for utility model embodiment's 2.
Fig. 8 is the C-C cutaway view of Fig. 7.
The specific embodiment
With reference to accompanying drawing 1,2.The utility model comprises drill body 1, jaw 4, the nut 3 that is threaded with jaw, the rotary sleeve 2 of axially limited operating nut, it also has been provided with the spring leaf 7 of self-locking action, spring leaf is connected with nut and rotates, spring leaf has lock end 72, drill body is provided with the sawtooth circle 11 of holding unidirectional tooth lock to cooperate with the lock of spring leaf, the rotary sleeve inwall is provided with the structure that is connected with spring leaf, the rotary sleeve inwall also is provided with the structure of control spring sheet and sawtooth circle mated condition, comprises the sheet metal 61 that withstands spring leaf when being in self-locking state in that side of spring mortice lock end in the structure of control spring sheet and sawtooth circle mated condition.
Present embodiment is an example with two cover drill chuck structures, and drawing reference numeral 9 is back covers, and drawing reference numeral 5 is protecgulums of drill chuck.The sawtooth circle can directly be processed on the cylindrical of drill body, also can adopt and mix a mode with part of sawtooth on drill body.Present embodiment sawtooth circle is directly processed on the drill body of nut front end.
The cooperation of unidirectional tooth lock can be understood as when spring mortice lock end falls into the sawtooth of sawtooth circle, if nut is according to the direction rotation that clamps drill bit, spring mortice lock end and sawtooth are in the state do not locked, but in the opposite direction, spring mortice lock end and sawtooth are because of withstanding the tooth lock mutually, and nut can't rotate according to rightabout.
It also is provided with the round element 8 with the nut interference fit, and described spring leaf is provided with installation position 73, and the installation position is sandwiched between round element and the nut.
Spring leaf is provided with outside lock projection 71 in that side of lock end, and described rotary sleeve inwall control spring sheet also comprises the groove 63 that cooperates with lock projection with the structure of sawtooth circle mated condition.
As the another kind of structure set-up mode of spring leaf at that end of lock end, described spring leaf has bifurcated at that end of lock end, and lock projection is in different branches with the lock end and sticks.
Spring leaf also is provided with outside positioning convex 74, and the structure that the rotary sleeve inwall is connected with spring leaf comprises the groove that cooperates with positioning convex.The groove 65 that matches when groove 64 that this groove matches when comprising locking state and released state.
The main body of rotary sleeve is made of metal, and rotary sleeve also comprises cover 6 in the plastics that are embedded in inwall, the inwall of cover in the structure of described as shown in Figure 3 and Figure 4 structure that is connected with spring leaf and control spring sheet and sawtooth circle mated condition is located at.Cover 6 inwalls in described sheet metal 61 is embedded in.
Fig. 5 and Fig. 6 shown another kind of in the embodiment that is connected of cover and sheet metal.It also is provided with the sheet metal centring ring 62 that is connected with described sheet metal, is provided with location hook 66 in the lower end of described sheet metal, and like this, sheet metal 61 is by the inner surface of cover in being located at firmly.
The rotary sleeve inwall is provided with transposition groove 21, and nut is provided with the transposition key 31 that is in the transposition groove.
Rotary sleeve is arranged on the back-up ring 12 of drill body front end and is located at case ring 91 axial limitings of back cover front end.
When being in non-self-locking state, spring mortice lock end 72 and sawtooth circle 11 are in disengaged condition, positioning convex 74 is in the detent 65, spring leaf is connected with rotary sleeve, when put into drilling tool in jaw after, from the drill chuck lower end, clockwise rotate rotary sleeve, torsion is passed to nut from spring leaf, drives nut and rotates, and jaw is drawn in gradually clamp drilling tool.Be rotated further rotary sleeve, at this moment, nut and spring leaf temporarily stop operating, after rotary sleeve turns over certain angle, the transposition key of the back wall for leaning of transposition groove and nut near, simultaneously, spring leaf is rotated cover inwall jack-up, the position of being pushed up is exactly a sheet metal, and the locking end enters in the serrated slot, and projection 74 is in the groove 64.Be rotated further rotary sleeve, drive nut and elastic locking element and rotate, the lock end of spring leaf slips on the serrated slot surface, the another tooth of a tooth, and clamping force is increasing, until complete clamping tool.At this moment, unless during power cut-off, operation rotary sleeve reverse rotation is by the step opposite with the above-mentioned steps drilling tool that gets loose, because the lock end of spring leaf is withstood by sawtooth, under the situation of not handling rotary sleeve, nut can't backward rotation, thereby realizes self-locking, even make drill chuck be subjected to shock loading at work, nut can not become flexible yet, keep the clamping of drill chuck to drilling tool, and, when work, bear the reaction force of spring leaf by sheet metal, its tolerance is stronger, can deformation, and coupling mechanism force is bigger, the auto-lock function of guaranteeing drill chuck is stable for a long time, prolongs the service life of drill chuck.
With reference to accompanying drawing 7 and 8.The rotary sleeve of present embodiment is that a main body is the part that plastics are made, and sheet metal is inserted in the corresponding site of rotary sleeve inwall.Drawing reference numeral 14 is the rotary sleeve axial location collars that are connected with drill body.Other are identical with embodiment 1.
In Fig. 7 and 8, drawing reference numeral and Fig. 1,2,3,4,5,6 identical identical parts of representative.
Claims (9)
1, a kind of novel self-locking hand fastening drill clutch, comprise drill body, jaw, the nut that is threaded with jaw, the rotary sleeve of axially limited operating nut, it is characterized in that it also has been provided with the spring leaf of self-locking action, spring leaf is connected with nut and rotates, spring leaf has the lock end, drill body is provided with the sawtooth circle of holding unidirectional tooth lock to cooperate with the lock of spring leaf, the rotary sleeve inwall is provided with the structure that is connected with spring leaf, the rotary sleeve inwall also is provided with the structure of control spring sheet and sawtooth circle mated condition, comprises the sheet metal that withstands spring leaf when being in self-locking state in that side of spring mortice lock end in the structure of control spring sheet and sawtooth circle mated condition.
2, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 is characterized in that it also is provided with round element with the nut interference fit, and described spring leaf is provided with the installation position, and the installation position is sandwiched between round element and the nut.
3, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2, it is characterized in that spring leaf is provided with outside lock projection in that side of lock end, described rotary sleeve inwall control spring sheet also comprises the groove that cooperates with lock projection with the structure of sawtooth circle mated condition.
4, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2 is characterized in that described spring leaf has bifurcated at that end of lock end, and lock projection is in different branches with the lock end and sticks.
5, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2 is characterized in that spring leaf also is provided with outside positioning convex, and the structure that the rotary sleeve inwall is connected with spring leaf comprises the groove that cooperates with positioning convex.
6, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2 is characterized in that rotary sleeve comprises the interior cover that is embedded in inwall, the inwall of cover in the structure of described structure that is connected with spring leaf and control spring sheet and sawtooth circle mated condition is located at.
7, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2 is characterized in that it also is provided with the sheet metal centring ring that is connected with described sheet metal,
8, a kind of novel self-locking hand fastening drill clutch as claimed in claim 1 or 2 is characterized in that described sheet metal is provided with location hook.
9, a kind of novel self-locking hand fastening drill clutch as claimed in claim 3 is characterized in that the rotary sleeve inwall is provided with the transposition groove, and nut is provided with the transposition key that is in the transposition groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115941 CN2832377Y (en) | 2005-11-01 | 2005-11-01 | Self-locking hand-screwed drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115941 CN2832377Y (en) | 2005-11-01 | 2005-11-01 | Self-locking hand-screwed drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2832377Y true CN2832377Y (en) | 2006-11-01 |
Family
ID=37196693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115941 Expired - Fee Related CN2832377Y (en) | 2005-11-01 | 2005-11-01 | Self-locking hand-screwed drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2832377Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499667A (en) * | 2016-02-23 | 2016-04-20 | 威海达旺五金制品有限责任公司 | Drill chuck protecting device and drill chuck |
| CN112476353A (en) * | 2019-09-12 | 2021-03-12 | 苏州宝时得电动工具有限公司 | Impact tool |
-
2005
- 2005-11-01 CN CN 200520115941 patent/CN2832377Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499667A (en) * | 2016-02-23 | 2016-04-20 | 威海达旺五金制品有限责任公司 | Drill chuck protecting device and drill chuck |
| CN112476353A (en) * | 2019-09-12 | 2021-03-12 | 苏州宝时得电动工具有限公司 | Impact tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |