CN219379086U - Hand-tightening drill chuck - Google Patents
Hand-tightening drill chuck Download PDFInfo
- Publication number
- CN219379086U CN219379086U CN202221099862.0U CN202221099862U CN219379086U CN 219379086 U CN219379086 U CN 219379086U CN 202221099862 U CN202221099862 U CN 202221099862U CN 219379086 U CN219379086 U CN 219379086U
- Authority
- CN
- China
- Prior art keywords
- drill body
- nut
- drill
- rotary sleeve
- drill chuck
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Gripping On Spindles (AREA)
Abstract
The utility model provides a hand-tightening drill chuck, which comprises a rotary sleeve, a drill body, a nut, clamping jaws and a gasket, wherein the nut is in threaded connection with the clamping jaws, the rotary sleeve is directly connected with the nut or is connected with the nut through a connecting structure, the drill body is provided with an inclined clamping jaw hole for the clamping jaws to slide back and forth along the clamping jaw hole, the drill body is provided with a step for supporting the gasket, and the nut is supported by the gasket; in the surrounding range of the rotary sleeve, a plurality of radial bulges are arranged on a structure which is arranged on the drill body and surrounds the central axis of the drill body and is close to the rotary sleeve in the radial direction, at least one part of the radial bulges form friction fit with the inner wall of the rotary sleeve, and the structure close to the rotary sleeve is fixed with the drill body and cannot rotate relative to the drill body. The utility model can utilize the characteristics of the drill chuck component, and prevent the loosening or the failure of the self-locking state of the drill chuck in a simpler mode on the basis of controlling the cost.
Description
Technical Field
The utility model relates to a drill chuck, in particular to a hand-tightened drill chuck.
Background
The drill chuck is internally provided with a drill body, clamping jaws, nuts, a bearing and a gasket, wherein the gasket is placed on a step in the middle of the drill body, the bearing is placed on the gasket, then the nuts are placed on the bearing, the nuts are in threaded connection with the clamping jaws, a rotary sleeve is arranged in the hand-tightened drill chuck, the rotary sleeve is directly connected with the nuts or is connected with the nuts through a connecting structure, and the rotary sleeve is manually operated to rotate the nuts so as to drive the clamping jaws to move forwards or backwards to clamp or loosen a drill bit.
With the development of lithium electricity technology, the electric drill rotational speed is faster and faster, and when the work of punching, the electric drill can produce inertia in the twinkling of an eye from high rotational speed to stopping, and the drill chuck can produce from the pine because of the electric drill scram, appears as the nut because of inertia and the rotation of orientation is opened to the drill chuck clamping jaw, leads to the drill bit pine to take off, even if set up self-locking structure, under current lithium electricity technology, the locking state of drill chuck also probably inefficacy. When the drill chuck is applied to an electric wrench, the drill chuck is easy to self-loosen due to the fact that the drill chuck bears large reverse impact.
In addition, when the drill chuck is in the punching impact operation process, because the electric drill shakes greatly, the risk that the nut rotates to the opening direction exists, and the drilling tool clamped by the clamping jaw falls off and cannot be normally used.
In the past, the solution to this mostly appears that the part is complicated, influences the packaging efficiency of drill chuck, is difficult to control the cost.
Disclosure of Invention
The utility model aims to provide a hand-tightening drill chuck, which can prevent the loosening or the failure of the self-locking state in a simpler way by utilizing the characteristics of a drill chuck component so as to overcome or alleviate the new problems in the field on the basis of controlling the cost.
For this purpose, the utility model adopts the following technical scheme:
the hand-tightening drill chuck comprises a rotary sleeve, a drill body, a nut, clamping jaws, a gasket, wherein the nut is in threaded connection with the clamping jaws, the rotary sleeve is directly connected with the nut or is connected with the nut through a connecting structure, the drill body is provided with an inclined clamping jaw hole for the clamping jaws to slide back and forth along the clamping jaw hole, the drill body is provided with a step for supporting the gasket, and the nut is supported by the gasket; the method is characterized in that: in the surrounding range of the rotary sleeve, a plurality of radial bulges are arranged on a structure which is arranged on the drill body and surrounds the central axis of the drill body and is close to the rotary sleeve in the radial direction, at least one part of the radial bulges form friction fit with the inner wall of the rotary sleeve, and the structure close to the rotary sleeve is fixed with the drill body and cannot rotate relative to the drill body.
On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes or use the further technical schemes in combination:
the structure close to the rotary sleeve is a component independent of the drill body.
For the inner wall of the circle of the rotary sleeve matched with the radial bulge, the distance between the top of the bulge and the central axis of the drill body is larger than the minimum distance between the inner wall and the central axis of the drill body but smaller than the maximum distance between the inner wall and the central axis of the drill body.
The structure proximate the rotating sleeve is axially positioned proximate the nut.
The gasket is fixedly connected with the drill body, and the structure close to the rotary sleeve adopts the gasket.
A rotary sliding assisting structure is arranged between the nut and the washer.
The rotary sleeve is an engineering plastic part.
The drill chuck is provided with a self-locking structure, the self-locking structure comprises a spring piece arranged on a nut and a circle of teeth arranged on a drill body and matched with the locking end of the spring piece, the spring piece is provided with a part controlled by a rotary sleeve and a bulge connected with the rotary sleeve, and the rotary sleeve is provided with a groove connected with the bulge on the spring piece in a self-locking state.
Although the circumferential wall of the inner hole of the rotary sleeve is manufactured according to a standard circle during manufacturing, due to gaps among parts and tiny deformation of the rotary sleeve, the rotary sleeve is not in a standard circle relative to the central axis of the drill body during use, the utility model utilizes the actual non-circular characteristic and the characteristic that the drill chuck is in a high-temperature state during use, in the surrounding range of the rotary sleeve, friction fit is formed between the radial protrusions and the inner wall of the rotary sleeve, the rotary sleeve cannot be prevented from interfering with the rotating operation function of the rotary sleeve, friction fit can be realized during working, and the loose or self-locking state failure can be solved or alleviated under the condition of not adding additional parts and not changing the almost zero cost of the assembly process.
The technical scheme and effects of the present utility model will be described in further detail below with reference to examples and drawings.
Drawings
Fig. 1 is an exploded view of example 1 of the present utility model.
Fig. 2 is a cross-sectional view of embodiment 1 of the present utility model.
Fig. 3 is a schematic illustration of the fit between the gasket and the actual non-circular inner bore wall of the swivel sleeve of example 1 of the present utility model.
Fig. 4 is an enlarged view of portion a of fig. 3, i.e., showing the friction fit relationship of portion 11 and protrusion 80.
Fig. 5 is an enlarged view of portion B of fig. 3, showing the clearance fit relationship of portion 12 and protrusion 80.
Fig. 6 is an enlarged view of a portion C of fig. 3, that is, showing a transition fit relationship between the protrusion 80 and a portion of the inner wall of the rotary sleeve located at a distance between a minimum distance and a maximum distance from the center axis O of the drill body.
Fig. 7 is a cross-sectional view of embodiment 2 of the present utility model.
Fig. 8 is a cross-sectional view of fig. 7.
Detailed Description
Example 1, refer to fig. 1-6.
The utility model provides a hand-tightening drill chuck, which comprises a rotary sleeve 1, a drill body 5, a nut 2, clamping jaws 6, a bearing 7 and a gasket 8, wherein the nut 2 is sleeved outside a cylinder of the drill body 5 so as to be centered, the nut 2 and the clamping jaws 6 are in threaded connection, the rotary sleeve 1 is connected with the nut 2 through key slot matching, the drill body 5 is provided with a step 52 for supporting the gasket 8 and an inclined clamping jaw hole 51, and the clamping jaws 6 penetrate through the clamping jaw hole 51 and can slide back and forth along the clamping jaw hole 51 under the drive of the nut 2.
The washer 8 is fixedly connected with the drill body 5 and cannot rotate relative to the drill body, and the nut 2 is supported by the washer 8; a rotary sliding assisting structure is arranged between the nut 2 and the washer 8. The rotary sliding assisting structure adopts the bearing 7, the bearing 7 comprises a circle of steel balls 71 and a sheet-shaped steel ball plastic retainer 72, the steel ball plastic retainer 72 is provided with a circle of steel ball holes, and the steel balls 71 are arranged in the steel ball holes of the steel ball plastic retainer 72.
In the surrounding range of the rotary sleeve 1, a plurality of radial protrusions are arranged on a structure, which is arranged on the drill body 5 and surrounds the central axis of the drill body, of a structure which is close to the rotary sleeve 1 in the radial direction, at least one part of the radial protrusions form friction fit with the inner wall of the rotary sleeve 1, and the structure which is close to the rotary sleeve is fixed with the drill body and cannot rotate relative to the drill body.
The structure proximate the swivel may be part of the drill body itself. The drill body can also be a part independent of the drill body, and the outer circle size of the drill body can be controlled in the latter mode, and the drill body is beneficial to saving materials.
Preferably, the structure proximate to the rotating sleeve is located axially proximate to the nut 2. In this embodiment, the structure adjacent to the rotating sleeve adopts the gasket 8, so that the newly added function of the utility model can be realized without adding extra parts. A plurality of said radial projections 80 are provided on the gasket 8.
The rotary sleeve 1 is an engineering plastic part and can comprise an iron shell or a metal structure of certain functional parts.
As previously mentioned, the circumferential wall of the bore of the rotary sleeve 1 is not embodied in use as a standard circle with respect to the central axis of the drill body, and in fig. 3, reference numeral 11 is a portion of smaller radial dimension of the circumferential wall 10 of the bore in the same axial position as the washer 8.
For the inner wall 10 of the rotary sleeve 1, which is matched with the radial protrusions 80, the distance between the top of the protrusions 80 and the central axis O of the drill body is larger than the minimum distance between the inner wall 10 and the central axis O of the drill body, namely the distance between the part 11 and the central axis O of the drill body, but smaller than the maximum distance between the inner wall 10 and the central axis O of the drill body, namely the distance between the part 12 and the central axis O of the drill body, at least one part of the radial protrusions can form friction fit with the rotary sleeve 1 when the drill chuck works (see figures 3 and 4), so that the rotary sleeve 1 is prevented from reversely rotating relative to the drill body 5 due to vibration and inertia; the rotating sleeve 1 can be rotated with the drill chuck cooled or with the gap between the parts while the drill chuck is operated to grip or loosen the drill bit.
Whether all of the protrusions 80 are friction fit with the inner rotating sleeve wall 10 or a portion of the protrusions 80 are friction fit with the inner rotating sleeve wall 10 depends on the actual non-circular embodiment of the inner rotating wall and the embodiment of the rotating sleeve being slightly offset from the central axis due to the clearance between the parts. Figures 3 and 5 show that there may be some of the protrusions 80 in clearance with the inner wall 10 of the rotating sleeve, and figures 3 and 6 show that there may be some of the protrusions 80 in friction fit with one portion 801 of the inner wall of the rotating sleeve, but another portion 802 in clearance.
Example 2, see FIGS. 7-8, and FIGS. 1-5.
The present embodiment is a self-locking hand-tightened drill chuck embodiment.
The main structure of the hand drill chuck with the self-locking structure of this embodiment is the same as that of embodiment 1, and details thereof will not be described herein, and specific reference may be made to the description of embodiment 1. The embodiment adds a self-locking structure on the basis of the embodiment 1.
As shown in fig. 4-5, the front end of the nut 2 is provided with five keys 21 for installing the spring piece 101 in the self-locking structure, the spring piece 101 is elastically clamped in the plurality of keys 21 through the concave-convex configuration on the spring piece 101, and the spring piece 101 comprises a protrusion 102 and the locking end 103; the self-locking structure further comprises a circle of teeth 53 which are arranged on the drill body 2 and matched with the spring piece locking end 103, and the rotary sleeve 1 is provided with a groove 11 corresponding to the self-locking state. When the clamping jaw 6 just clamps the drill bit, torque force is continuously input through the rotating sleeve 1, the rotating sleeve 1 rotates at a certain angle relative to the nut 2, so that the key 13 on the rotating sleeve 1 and the key 211 adjacent to the key on the nut 2 are contacted, at the moment, the rotating sleeve 1 controls the lock end 103 of the spring piece to be inserted into the tooth 53 through the cam structure 12 arranged on the rotating sleeve, when torque force is continuously input, the key 13 continuously drives the nut 2 to rotate through the key 211, and the spring piece slides on the surface of the tooth 53 at the moment, and makes a pyridazine sound to indicate that the drill bit is clamped, and the clamping force is increased and the drill bit is in a self-locking state.
In the self-locking state, the spring piece 101 is connected with the groove 11 on the rotary sleeve through the bulge 102 to keep the self-locking state, and the radial bulge and the inner wall of the rotary sleeve form friction fit, so that the holding force of the self-locking state can be increased, the performance of the self-locking structure for resisting vibration and inertia is improved, and the risk of reverse failure of the self-locking state due to vibration and inertia is reduced.
The above embodiments are merely examples of the present utility model, but the present utility model is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present utility model.
Claims (8)
1. The hand-tightening drill chuck comprises a rotary sleeve, a drill body, a nut, clamping jaws, a gasket, wherein the nut is in threaded connection with the clamping jaws, the rotary sleeve is directly connected with the nut or is connected with the nut through a connecting structure, the drill body is provided with an inclined clamping jaw hole for the clamping jaws to slide back and forth along the clamping jaw hole, the drill body is provided with a step for supporting the gasket, and the nut is supported by the gasket; the method is characterized in that: in the surrounding range of the rotary sleeve, a plurality of radial bulges are arranged on a structure which is arranged on the drill body and surrounds the central axis of the drill body and is close to the rotary sleeve in the radial direction, at least one part of the radial bulges form friction fit with the inner wall of the rotary sleeve, and the structure close to the rotary sleeve is fixed with the drill body and cannot rotate relative to the drill body.
2. A hand drill chuck according to claim 1 wherein the structure proximate the swivel is a component independent of the drill body.
3. A hand drill chuck according to claim 1 wherein, for a ring of inner walls of the swivel which engage the radial projections, the top of the projections is spaced from the central axis of the drill body more than the minimum distance of the inner walls from the central axis of the drill body but less than the maximum distance of the inner walls from the central axis of the drill body.
4. A hand drill chuck according to claim 1 or claim 2 wherein the structure proximate the swivel is axially located proximate the nut.
5. A hand drill chuck according to claim 3 wherein the washer is fixedly connected to the drill body and the structure adjacent the swivel employs the washer.
6. A hand drill chuck according to claim 1, wherein a rotary slip-assist structure is provided between the nut and the washer.
7. A hand drill chuck according to claim 1 wherein the swivel housing is an engineering plastic.
8. The hand drill chuck according to claim 1, wherein the drill chuck is provided with a self-locking structure, the self-locking structure comprises a spring piece arranged on the nut and a circle of teeth arranged on the drill body and matched with the locking end of the spring piece, the spring piece is provided with a part controlled by a rotating sleeve and a bulge connected with the rotating sleeve, and the rotating sleeve is provided with a groove connected with the bulge on the spring piece in a self-locking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221099862.0U CN219379086U (en) | 2022-05-07 | 2022-05-07 | Hand-tightening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221099862.0U CN219379086U (en) | 2022-05-07 | 2022-05-07 | Hand-tightening drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219379086U true CN219379086U (en) | 2023-07-21 |
Family
ID=87190686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221099862.0U Active CN219379086U (en) | 2022-05-07 | 2022-05-07 | Hand-tightening drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219379086U (en) |
-
2022
- 2022-05-07 CN CN202221099862.0U patent/CN219379086U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Sanou Intelligent Technology Co.,Ltd. Assignor: ZHEJIANG SANOU MACHINERY Co.,Ltd. Contract record no.: X2023330000846 Denomination of utility model: A hand tight drill chuck Granted publication date: 20230721 License type: Common License Record date: 20231115 |
|
| EE01 | Entry into force of recordation of patent licensing contract |