CN201128007Y - Drill chuck with self-locking function - Google Patents
Drill chuck with self-locking function Download PDFInfo
- Publication number
- CN201128007Y CN201128007Y CNU2007203109444U CN200720310944U CN201128007Y CN 201128007 Y CN201128007 Y CN 201128007Y CN U2007203109444 U CNU2007203109444 U CN U2007203109444U CN 200720310944 U CN200720310944 U CN 200720310944U CN 201128007 Y CN201128007 Y CN 201128007Y
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- CN
- China
- Prior art keywords
- cap
- chuck
- ratchet
- jump ring
- projection
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a drill chuck with self-locking function, which comprises a body, a front cap, a rear cap, a bearing assembly, three holding jaws, a jacket, a baffle cover and a nut. The rear end of the body is connected and fixed with the rear cap, the three holding jaws pass through and are arranged in three slant holes arranged on the body, the nut is arranged at the middle part of the body and is connected and fixed with the jacket, at the same time, the nut is meshed with the screw threads of the three holding jaws to drive the holding jaws to move, the bearing assembly which can cause the front cap to freely rotate is arranged between the front cap and the body, the surface of the front end of the body is provided with ratches, a concavo convex structure is matched between the front cap and the jacket to transfer a torque, a jettison device is arranged between the jacket and the front cap, the jacket and the front cap can relatively rotate at a certain angle, and the jettison device can be driven to prop against or break away from the ratches arranged on the surface of the front end of the body.
Description
Technical field
The utility model is about a kind of electric tool, more particularly, and about the drill chuck that uses on a kind of high-power impact class electric hand drill with auto-lock function.
Background technology
Existing drill chuck is all by the back cap, preceding cap, nut, body, jaw, door, bearer ring, the pearl frame, compositions such as steel ball, back cap and bearer ring are interference fitted on the body respectively, three jaws are installed in respectively in the inclined hole of three five equilibriums on the body, nut is installed in the nut groove of body, the threaded engagement of nut and jaw forms the screw thread transmission, preceding cap and nut interference fit, the front is mounted with door, rotate by the moving nut of hatband before the rotation during use, driving three jaws by the screw thread transmission seesaws in three inclined holes of body, three-jaw is opened or closure, reach the purpose of unclamping or clamping drilling tool.The weak point of above structure be drill chuck in the course of the work owing to vibrated or impacted, drilling tool skids easily or becomes flexible, and has a strong impact on operating efficiency, poor stability.
Summary of the invention
It is a kind of simple in structure that the purpose of this utility model is to provide, and has the drill chuck of auto-lock function.
The drill chuck that has auto-lock function in the utility model includes body, preceding cap, back cap, bearing assembly, three jaws, door and nut, the rear end of described body and described back cap are connected and fixed, described three jaws are located in three set on described body inclined holes, described nut is located at the middle part of described body, and between the step at described nut and described body middle part, be provided with described bearing assembly, described nut of while and described three jaw screw-threaded engagement, driving described jaw moves along described inclined hole, before described, be provided with chuck between cap and the described nut, described chuck and described nut are connected and fixed, the front end surface of described body is provided with ratchet, described chuck and described before be provided with elastic device between the cap, adopt concaveconvex structure to cooperate before described between cap and the chuck and transmit moment of torsion, and can rotate an angle relatively, replace or break away from the set ratchet of described body front end surface to drive described elastic device.
Be provided with at least one group of groove and projection that preceding cap and described chuck are relatively moved before described between cap and the described chuck, the width of wherein said groove is greater than the width of described projection.
Described groove is positioned on the lateral wall of described chuck, and described projection is positioned on the madial wall of described preceding cap.
Described ratchet is a triangular shaped ratchet.
Described elastic device is a jump ring, the front end end face of described chuck is provided with one group of projection that is used for fixing described jump ring at least, the centre of described jump ring and described projection are connected and fixed, one end of described jump ring under released state and locking state, enter respectively described before the cap inwall set separate locked groove and locating slot, the ratchet of the described jump ring other end breaks away from respectively under released state and locking state and replaces the set ratchet of described body surface.
Described every group of projection includes three bumping squares, is useful on the gap that fixes described jump ring between two adjacent projections.
The cap madial wall is provided with the groove that enters and break away from described body ratchet for described ratchet before described.
Two or more projectioies are arranged, with the annular groove clamping of described preceding cap inwall on the cylindrical of described chuck.
Described elastic device is a jump ring, the front end end face of described chuck is provided with one group at least and is used for fixing the projection that connects described jump ring, described projection includes at least one projection, one end of described jump ring directly is connected and fixed with described projection, the ratchet of the described jump ring other end under released state and locking state, enter respectively described before set groove and the locking slot of cap inwall, and break away from respectively and replace the set ratchet of described body surface.
The more described groove of the degree of depth of described locking slot is shallow.
Drill chuck in the utility model realizes only locking purpose by means of the engagement of the ratchet that is fixed on elastic device on the chuck and body front end, locating slot or locking slot by the setting of preceding cap inwall prevents that elastic device breaks away from the ratchet of body because of vibrations simultaneously, thereby make and be difficult for rotating between nut and the body, three not nut generation displacements relatively of jaw, drilling tool can not get loose, the security reliability when having improved drill chuck work greatly.
Description of drawings
Fig. 1 is the structural representation of drill chuck in the utility model;
Fig. 2 is that drill chuck is in cutaway view under the released state along A-A line among Fig. 1 among the embodiment one;
Fig. 3 is that drill chuck is in cutaway view under the locking state along A-A line among Fig. 1 among the embodiment one;
Fig. 4 is that drill chuck is in cutaway view under the released state along A-A line among Fig. 1 among the embodiment two;
Fig. 5 is that drill chuck is in cutaway view under the locking state along A-A line among Fig. 1 among the embodiment two;
Fig. 6 is the partial enlarged drawing of the I of drill chuck shown in Fig. 1 part;
Fig. 7 is the structural representation of chuck among the embodiment two;
Fig. 8 is that drill chuck is in cutaway view under the released state along A-A line among Fig. 1 among the embodiment three;
Fig. 9 is that drill chuck is in cutaway view under the locking state along A-A line among Fig. 1 among the embodiment three.
The specific embodiment
The specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one
As Fig. 1 to Fig. 3 and shown in Figure 6, the drill chuck in the present embodiment includes body 5, three jaws 6, nut 7, back cap 1, preceding cap 2, chuck 4, door 3, jump ring 11 and bearing assemblies 8, wherein:
The edge circumferentially offers the hole of three inclinations equally spacedly in the body 5, a movably jaw 6 is installed in each inclined hole, be evenly equipped with asymmetric triangle ratchet 50 (also can be other shape) on the fore end outer circumference surface of body 5, body 5 middle parts are equipped with nut 7, this nut 7 is two halves formula structure (also can be a monolithic construction or the structure be made up of three parts even more parts), be meshing with each other by screw thread with three jaws 6, can drive three jaws 6 and move up and down, realize clamping and the purpose of unclamping the drill bit (not shown).
The rear end of body 5 adopts interference fit or other connected mode to be connected and fixed with back cap 1.
Chuck 4 adopts interference fit with nut 7 or fixedlys connected with structures such as groove, fins, front end at chuck 4 is provided with two groups of (can be one or more groups) columnar projections 41, each group projection 41 includes three bumping squares, is provided with between the per two adjacent projections to be used to lay the fixedly gap 45 of elastic device (jump ring) 11.Chuck 4 offers two (can be one or three even more) grooves 42 on its lateral wall.
Before cooperates with concaveconvex structure between cap 2 and the chuck 4 and transmits moment of torsion, preceding cap 2 is provided with two projectioies 21 in the position corresponding with chuck 4 upper grooves 42, the width of its further groove 42 is greater than the width of projection 21, feasible preceding cap 2 chuck 4 relatively rotates a certain angle.And groove 42 can be exchanged with projection 21, promptly on chuck 4 projection is set, and on preceding cap 2 groove is set.Before the surface within it of cap 2 be provided with two groups of corresponding with protruding 41 locked groove 22, locating slot 23 and grooves 24 separated.The lateral wall of chuck 4 is provided with two or more protruding 46, and with annular groove 26 clampings on the preceding cap 2, cap 2 moves axially before being used to limit.
The middle part of jump ring 11 fixes between the gap 45 of projection 41, one end is provided with positioning convex 110, the other end is provided with ratchet 112, by the position of cap before the relative rotation 2 with chuck 4, the ratchet 112 that can replace or unclamp jump ring 11 is meshing with each other with the ratchet 50 of body 5 or throws off, positioning convex 110 is entered separate locked groove 22 or locating slot 23, cap 2 is in and freely rotates or lock-out state before making, as shown in Figures 2 and 3.
Between the step at the rear end face of nut 7 and body 5 middle parts bearing assembly 8 is installed, this bearing assembly 8 includes bearer ring 80, pearl frame 81 and one group of steel ball 82, to guarantee being free to rotation between nut 7 and the body 5, because the structure that this nut 7 and bearing assembly are 8 is a prior art, no longer describes in detail at this.
The structures such as interference fit or groove and fin that adopt with door 3 foremost of body 5 are fixedlyed connected, thus further the moving axially of cap 2 before the restriction.
The course of work of drill chuck is as follows among the utility model embodiment one:
At first preceding cap 2 is rotated to unlocked position toward the direction of unclamping drilling tool, as shown in Figure 2, the groove 24 of cap 2 before the ratchet 112 of jump ring 11 1 ends falls into is at this moment thrown off with the ratchet 50 of body 5, and cap 2 separating in the locked groove 22 before the positioning convex 110 of the other end entered.When needing to clamp drilling tool, cap 2 drives nut 7 rotations before the rotation, further driving jaw 6 moves, cap 2 rotates a certain angle with chuck 4 before when being subjected to enough resistances, the groove 24 of cap 2 produces after the strains ratchet 50 engagements with body 5 before making the ratchet 112 of jump ring 11 break away from, before entering, the positioning convex 110 of the other end of jump ring 11 in the locating slot 23 of cap 2, prevents that preceding cap 2 rotates and causes release in the vibration processes of work.During release, only need the certain angle of preceding cap 2 opposite spins, in the groove 24 of cap 2, with ratchet 50 disengagings of body 5, cap 2 before the rotation unclamped drill bit then, finishes entire work process before the ratchet 112 of jump ring 11 was got back to again.
Embodiment two
Drill chuck in the present embodiment basic with the foregoing description one in identical, be that jump ring 11 is different with the structure and the mounting means of chuck 4.Wherein chuck 4 only includes a projection 47 in the projection 41 of end setting, as Fig. 4, Fig. 5 and shown in Figure 7, and an end of jump ring 11 is direct and projection 47 is connected and fixed, the other end then be provided with embodiment one in identical ratchet 112, corresponding with ratchet 112, on the inwall of preceding cap 2, be provided with the more shallow locking slot 25 of the relative groove of the groove 24 and the degree of depth 24, when entering locking slot 25, can mesh on ratchet 112 with the ratchet 50 on body 5 surfaces, and it is identical with the function of locating slot 23 among the embodiment one, cap 2 rotates before can preventing in the vibration processes, has only lock function, and when ratchet 112 enters groove 24, break away from the ratchet 50 on body 5 surfaces, be in released state.The so chuck in the present embodiment, and equal simpler among the embodiment one relatively of jump ring, processing technology is also simpler, and is convenient, reduces cost relatively.The concrete course of work of drill chuck is as follows in the present embodiment:
At first preceding cap 2 is rotated to unlocked position toward the direction of unclamping drilling tool, as shown in Figure 5, the groove 24 of cap 2 before the ratchet 112 of jump ring 11 1 ends falls at this moment, break away from the ratchet 50 of body 5, when needing to clamp drilling tool, cap 2 drives nut 7 rotations before the rotation, further driving jaw 6 moves, cap 2 and chuck 4 relative rotating a certain angle before when being subjected to enough resistances, the groove 24 of cap 2 enters locking slot 25 before making the ratchet 112 of jump ring 11 break away from, ratchet 50 with body 5 after the generation strain meshes, and prevents that preceding cap 2 rotates and causes release in the vibration processes of work.During release, only need the certain angle of preceding cap 2 opposite spins, the locking slot 25 of cap 2 was got back to again in the groove 24 before the ratchet 112 of jump ring 11 broke away from, and with ratchet 50 disengagings of body 5, cap 2 before the rotation unclamps drill bit then, finishes entire work process.
Embodiment three
Drill chuck structure in the present embodiment and operation principle basic with the foregoing description two in identical, the parts employing same numeral with identical function and structure is illustrated, and describes separately having the component no longer shown in the same numeral.Its difference is that the projection 41 that is used for being connected and fixed with jump ring 11 1 ends that chuck 4 ends are provided with includes two projections, as Fig. 8 and shown in Figure 9, can better bring into play the elasticity of jump ring 11 like this.
Claims (10)
1, a kind of drill chuck with auto-lock function, include body (5), preceding cap (2), back cap (1), bearing assembly (8), three jaws (6), door (3) and nut (7), the rear end of described body (5) and described back cap (1) are connected and fixed, described three jaws (6) are located in described body (5) and go up in three set inclined holes, described nut (7) is located at the middle part of described body (5), and between the step at described nut and described body middle part, be provided with described bearing assembly (8), described nut of while (7) and described three jaws (6) screw-threaded engagement, driving described jaw (6) moves along described inclined hole, it is characterized in that: be provided with chuck (4) between cap before described (2) and the described nut (7), described chuck (4) is connected and fixed with described nut (7), the front end surface of described body (5) is provided with ratchet (50), described chuck (4) and described before be provided with elastic device (11) between the cap (2), before described between cap (2) and the chuck (4) the employing concaveconvex structure cooperate and transmit moment of torsion, and can rotate an angle relatively, replace or break away from the set ratchet (50) of described body (5) front end surface to drive described elastic device (11).
2, according to the drill chuck described in the claim 1 with auto-lock function, it is characterized in that: be provided with at least one group of groove (42) and projection (21) that preceding cap (2) and described chuck (3) are relatively moved before described between cap (2) and the described chuck (4), the width of wherein said groove (42) is greater than the width of described projection (21).
3, according to the drill chuck with auto-lock function described in the claim 2, it is characterized in that: described groove (42) is positioned on the lateral wall of described chuck (4), and described projection (21) is positioned on the madial wall of described preceding cap (2).
4, according to the drill chuck with auto-lock function described in the claim 1, it is characterized in that: described ratchet (50) is triangular shaped ratchet.
5, according to any described drill chuck in the claim 1 to 4 with auto-lock function, it is characterized in that: described elastic device (11) is a jump ring, the front end end face of described chuck (4) is provided with one group of projection (41) that is used for fixing described jump ring (11) at least, the centre and the described projection of described jump ring (11) are connected and fixed, one end (110) of described jump ring under released state and locking state, enter respectively described before cap (2) inwall set separate locked groove (22) and locating slot (23), the ratchet (112) of described jump ring (11) other end breaks away from the ratchet (50) surperficial set with replacing described body (5) respectively under released state and locking state.
6, according to the drill chuck with auto-lock function described in the claim 5, it is characterized in that: described every group of projection (41) includes three bumping squares, is useful on the gap (45) that fixes described jump ring (11) between two adjacent projections.
7, according to the drill chuck with auto-lock function described in the claim 5, it is characterized in that: cap (2) madial wall is provided with the groove (24) that enters and break away from described body (5) ratchet (50) for described ratchet (112) before described.
8, according to any described drill chuck in claim 1 or 4, it is characterized in that: two or more projectioies (46) are arranged, on the cylindrical of described chuck (4) with annular groove (26) clamping of described preceding cap (2) inwall with auto-lock function.
9, according to any described drill chuck in claim 1 or 4 with auto-lock function, it is characterized in that: described elastic device (11) is a jump ring, the front end end face of described chuck (4) is provided with one group at least and is used for fixing the projection (41) that connects described jump ring (11), described projection (41) includes at least one projection (47), one end of described jump ring directly is connected and fixed with described projection (47), the ratchet (112) of described jump ring (11) other end under released state and locking state, enter respectively described before set groove (24) of cap (2) inwall and locking slot (25), and break away from respectively and replace the set ratchet (50) in described body (5) surface.
10, according to the drill chuck with auto-lock function described in the claim 9, it is characterized in that: the more described groove of the degree of depth (24) of described locking slot (25) is shallow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203109444U CN201128007Y (en) | 2007-12-18 | 2007-12-18 | Drill chuck with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203109444U CN201128007Y (en) | 2007-12-18 | 2007-12-18 | Drill chuck with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201128007Y true CN201128007Y (en) | 2008-10-08 |
Family
ID=40015833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203109444U Expired - Fee Related CN201128007Y (en) | 2007-12-18 | 2007-12-18 | Drill chuck with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201128007Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626884A (en) * | 2016-11-22 | 2017-05-10 | 长江大学 | Multifunctional automatic chalk writing device |
| CN112203788A (en) * | 2018-03-21 | 2021-01-08 | 捷可勃斯夹头制造（苏州）有限公司 | Chuck with automatic jaw adjustment |
-
2007
- 2007-12-18 CN CNU2007203109444U patent/CN201128007Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626884A (en) * | 2016-11-22 | 2017-05-10 | 长江大学 | Multifunctional automatic chalk writing device |
| CN106626884B (en) * | 2016-11-22 | 2018-09-14 | 长江大学 | Multifunctional automatic chalk Write |
| CN112203788A (en) * | 2018-03-21 | 2021-01-08 | 捷可勃斯夹头制造（苏州）有限公司 | Chuck with automatic jaw adjustment |
| CN112203788B (en) * | 2018-03-21 | 2023-09-08 | 捷可勃斯夹头制造（苏州）有限公司 | Chuck with automatic jaw adjustment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20121218 |