CN209077836U - A kind of self-locking clamping chuck of drill bit - Google Patents
A kind of self-locking clamping chuck of drill bit Download PDFInfo
- Publication number
- CN209077836U CN209077836U CN201821599321.8U CN201821599321U CN209077836U CN 209077836 U CN209077836 U CN 209077836U CN 201821599321 U CN201821599321 U CN 201821599321U CN 209077836 U CN209077836 U CN 209077836U
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- CN
- China
- Prior art keywords
- spring leaf
- self
- connection bump
- locking
- nut
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Abstract
The utility model provides a kind of self-locking clamping chuck of drill bit, including rotary sleeve, drill body, nut, nut set, clamping jaw, the self-locking structure being fixedly connected with nut, the self-locking structure includes tooth and spring leaf, the spring leaf has lock end, the connection bump matched with tooth, cam structure of the rotary sleeve with the first position connecting in self-locking state with spring leaf connection bump and the second position and control spring leaf lock end that connect in non-self-locking state with spring leaf connection bump；The drill chuck is provided with fixed structure or position limiting structure, cooperates with position of the spring leaf by connection bump, fixes to it or limit in the inside direction of motion to it.The utility model can be more securely retained in self-locking state during the work time, and against existing technologies, the utility model structure is simple, and self-locking property is more preferable.
Description
Technical field
The utility model relates to drill chuck more particularly to hand fastening drill clutch.
Background technique
In the prior art, drill body, clamping jaw, nut are equipped in drill chuck, bearing, gasket, rotary sleeve, rear enclosure pass through rotation
Nut is to drive clamping jaw to travel forward or move backward and make drill point head clamping or loosen drilling tool.Self-locking structure is in drill chuck
In order to prevent drill chuck at work when the reaction force acts being subject to by it and the structure that drilling tool is loosened, generally by
Cooperated with spring leaf and the tooth being on drill body or on other fixed structures.Spring leaf is generally according on nut covers, benefit
It is stuck in protrusion in the hole of nut set, which also determines as self-locking state and non-self-lock-ing state with what rotary sleeve cooperated simultaneously
Position position.This Self-locking drill-chuck, under high-speed rotating occasion, once emergency stop, self-locking shape can be exited because of effect of inertia
State.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of self-locking clamping chuck of drill bit, during the work time can be more
It is reliably held at self-locking state.For this purpose, the utility model uses following technical scheme:
A kind of self-locking clamping chuck of drill bit, including rotary sleeve, drill body, nut, the nut set being fixedly connected with nut, clamping jaw, self-locking
Structure, the self-locking structure include tooth and spring leaf, and the tooth is on drill body or is on the part being fixed on drill body, institute
Spring leaf is stated then to be in the periphery of tooth and rotate synchronously with nut, the spring leaf with the lock end matched with tooth, connect it is convex
It rises, the rotary sleeve is with the first position connecting in self-locking state with spring leaf connection bump and in non-self-locking state and spring
The second position of piece connection bump connection and the cam structure for controlling spring leaf lock end；It is characterized by: the drill chuck is set
It is equipped with fixed structure or position limiting structure, the position of the fixed structure or position limiting structure and spring leaf by connection bump cooperates,
It is fixed or it is limited in the inside direction of motion.
Further, the other end of the connection bump close to the spring leaf, the position of the other end of spring leaf
It is fixed as the position by connection bump or is limited in the inside direction of motion.
Further, convex in the connection at the lock end at position and spring leaf of the spring leaf by connection bump
That rises is not ipsilateral.
Further, the length of the spring leaf meets it and is greater than in the location of drill chuck around drill body bending angle
180°。
Further, the spring leaf and nut set connect, and nut set is provided with connecting hole, and the connection bump is stuck in spiral shell
In the connecting hole of mother set, the other end that the nut puts on the corresponding spring leaf is inwardly stamped out slot, and the slot is at least
Towards this side transmission of connection bump, the other end of the spring leaf is fixed or from being penetrated in the slot from transmission inside
It is limited in the direction of motion.
The utility model can be more securely retained in self-locking state during the work time.The utility model is working
When, two ends of spring leaf are all restrained, form bow-shaped structural；The utility model can be improved spring leaf and connection bump
The anti-pressure ability of relevant part, prevent rotary sleeve disengage at work with the link position of spring leaf, prevent drill chuck
Self-locking state is exited because of effect of inertia under high-speed rotating occasion；Against existing technologies, the utility model structure is simple, from
It is more preferable to lock performance.
Detailed description of the invention
Fig. 1 is the explosive view of the utility model embodiment.
Fig. 2 is the schematic diagram of nut set in the utility model embodiment 1.
Fig. 3 is the bottom view of rotary sleeve in the utility model embodiment, shows the internal structure of rotary sleeve.
Fig. 4 is cross-sectional view when the utility model embodiment is in non-self-lock-ing state, shows spring leaf, tooth, rotary sleeve, spiral shell
The mated condition of mother set.
Fig. 5 is cross-sectional view when the utility model embodiment is in self-locking state, shows spring leaf, tooth, rotary sleeve, nut
The mated condition of set.
Fig. 6 is the schematic diagram of spring leaf in the utility model embodiment.
Specific embodiment
Referring to attached drawing.Self-locking clamping chuck of drill bit provided by the utility model, including rotary sleeve 8, drill body 1, nut 2 and nut
The nut being fixedly connected covers 7, clamping jaw 3, self-locking structure, and the self-locking structure includes tooth 11 and spring leaf 6, and the tooth 11 is in brill
On body 1,6, the spring be then in tooth 11 periphery and and nut 2 synchronous rotation, the length of the spring leaf 6 meet its
The location of drill chuck is greater than 180 ° around drill body bending angle, and the spring leaf 6 is connect with nut set 7, the spring leaf 6
With the lock end 61 matched with tooth 11, the rotary sleeve 8 have the first position 84 being connect with spring leaf 6 in self-locking state and
In the second position 83 that non-self-locking state is connect with spring leaf, the spring leaf 6 has lock end protrusion 62, connection by two close end respectively
Protrusion 63, the lock end protrusion 62, positioning protrusion 63 are stuck in nut and cover in upper two connecting holes 72, also set in rotary sleeve
There is the cam surface 85 with 62 cooperation of lock end protrusion.
Driver slot 70, the drive key 82 that the setting of rotary sleeve 8 cooperates with driver slot 70, institute are set on the nut set 7
The flute length for stating driver slot 70 is greater than the length of drive key 82, and its difference and drill chuck Zi non-self-locking state to self-locking state when revolve
The angle that pivoted housing 8 turns over is consistent.The driver slot 70 is between the rib 71 of nut set front end.
A kind of structure and its self-locking structure of self-locking clamping chuck of drill bit illustrated above.In fact, the self-locking structure of drill chuck
Can there are other setting forms, such as position set by tooth 11 and position difference.The other structures of drill chuck can also have
Other setting forms, rotary sleeve 8 is also possible to composite construction, external to have shell 80.Nut can be separate structure and
Connected by nut set integral, alternatively, nut is overall structure, drill body is not provided with nut groove and by the step in the middle part of drill body
In posterior support nut, and the component then positioned by other axial directions in front or the component connecting with drill body carry out nut
Limit.
At work, the lock end 61 of the spring leaf 6 is lived by tooth top, and the lock end protrusion 62 close to this one end is again by cam surface
85 push down, this one end of the spring leaf 7 is restrained.
For the connection bump 63 close to the other end of spring leaf 6, the drill chuck is provided with fixed structure or position limiting structure,
The fixed structure or position limiting structure and spring leaf cooperate at the position on 63 side of connection bump, fix to it or in inside (drill point
Head is internal) it is limited in the direction of motion.Preferably, the lock at position and spring leaf of the spring leaf by connection bump
End is in the not ipsilateral of the connection bump.
Preferably, the fixed structure or position limiting structure are fixed the position of 6 other end of spring leaf or are inwardly transporting
It is limited on dynamic direction.The fixed structure or position limiting structure are preferably used with flowering structure: described in corresponding on the nut set 7
The other end of spring leaf 6 is inwardly stamped out slot 73, and slot is at least towards this side transmission 731 of connection bump 63, the spring
The other end 64 of piece is stuck in the hole to form transmission 731 from being penetrated in the slot 73 from transmission, is fixed or inside
It is limited, not only manufactures in this way and its simple, and assemble also very convenient in the direction of motion.
The foregoing is merely the structure features of specific embodiment of the utility model, but the utility model to be not limited to
This, in the field of the utility model, made changes or modifications all cover practical new at this any those skilled in the art
Among the protection scope of type.
Claims (5)
1. a kind of self-locking clamping chuck of drill bit, including rotary sleeve, drill body, nut, the nut set being fixedly connected with nut, clamping jaw, self-locking knot
Structure, the self-locking structure include tooth and spring leaf, and the tooth is on drill body or is on the part being fixed on drill body, described
Spring leaf is then in the periphery of tooth and rotates synchronously with nut, and the spring leaf has lock end, the connection bump matched with tooth,
The rotary sleeve is with the first position connecting in self-locking state with spring leaf connection bump and in non-self-locking state and spring leaf
The second position of connection bump connection and the cam structure for controlling spring leaf lock end；It is characterized by: the drill chuck setting
There are fixed structure or position limiting structure, the position cooperation of the fixed structure or position limiting structure and spring leaf by connection bump is right
It is fixed or limits in the inside direction of motion to it.
2. a kind of self-locking clamping chuck of drill bit as described in claim 1, it is characterised in that the connection bump is close to the spring leaf
The position of the other end, the other end of spring leaf is fixed as the position by connection bump or the quilt in the inside direction of motion
Limit.
3. a kind of self-locking clamping chuck of drill bit as described in claim 1, it is characterised in that position of the spring leaf by connection bump
The not ipsilateral of the connection bump is in the lock end of spring leaf.
4. a kind of self-locking clamping chuck of drill bit as described in claim 1, it is characterised in that the length of the spring leaf meets it in drill point
The location of head is greater than 180 ° around drill body bending angle.
5. a kind of self-locking clamping chuck of drill bit as described in claim 1,2,3 or 4, which is characterized in that the spring leaf and nut set connect
It connects, nut set is provided with connecting hole, and the connection bump is stuck in the connecting hole of nut set, and the nut puts on the corresponding bullet
The other end of reed is inwardly stamped out slot, and the slot is at least towards this side transmission of connection bump, the spring leaf it is another
One end is fixed or is limited in the inside direction of motion from being penetrated in the slot from transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821599321.8U CN209077836U (en) | 2018-09-29 | 2018-09-29 | A kind of self-locking clamping chuck of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821599321.8U CN209077836U (en) | 2018-09-29 | 2018-09-29 | A kind of self-locking clamping chuck of drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209077836U true CN209077836U (en) | 2019-07-09 |
Family
ID=67118186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821599321.8U Active CN209077836U (en) | 2018-09-29 | 2018-09-29 | A kind of self-locking clamping chuck of drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209077836U (en) |
-
2018
- 2018-09-29 CN CN201821599321.8U patent/CN209077836U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Self-locking drill chuck Effective date of registration: 20190916 Granted publication date: 20190709 Pledgee: Agricultural Bank of China, Limited by Share Ltd, Taizhou Luqiao branch Pledgor: Sanou Machinery Co., Ltd., Zhejiang Registration number: Y2019330000064 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |