CN209124967U - A kind of self-locking type clamping head of hand-locking drill - Google Patents

Abstract

The utility model discloses a kind of self-locking type clamping head of hand-locking drill, including drill body and clamping jaw, hand-tight nut is set on drill body and is meshed with the screw thread of clamping jaw, and gasket outer rim is equipped with straight up outer and turns edge, and the inner wall that turns edge outside is equipped with handle ratchet wheel；Bungee ring is embedded in the mounting groove of hand-tight set, bungee ring include made of circle body, setting are axially extended in circle body outer two groups from lock set and two groups of clamping assemblies, it include two flexible self-locking heads from lock set, clamping assembly includes a reset head and a clamping head, the inner wall of the mounting groove of hand-tight set is circumferentially laid with several and reset head, self-locking head distinguishes matched first card slot, the second card slot, and the outer diameter of the first card slot is greater than the outer diameter of the second card slot；There is opening between wherein one group of two self-locking head from lock set, and the both sides in opening on circle body are equipped with clamp spring hole on circle body；The outer end of the clamping head is undaform.The utility model overcomes the shortcomings of existing product, accomplish it is easy for installation, it is self-locking thoroughly.

Description

A kind of self-locking type clamping head of hand-locking drill

Technical field

The utility model relates to a kind of self-locking type clamping head of hand-locking drill.

Background technique

Self-locking type clamping head of hand-locking drill, it has easy to operate, fast, the advantages that precision is high, has obtained more and more extensive Using, but some defects are still remained, such as: chucking power is small, skid etc..

The applicant applied for the utility model patent of Patent No. 201420749470.3, it discloses a kind of self-locking Hand fastening drill clutch since clamping sheet is less and limited block group, the design of cam bit are unreasonable, is led in actual use Clamping is caused to be not thorough, in addition, when installing bungee ring, due to having centainly close between bungee ring to be guaranteed and hand-tight set Degree causes the installation of bungee ring inconvenient；Moreover, in a noisy environment in use, " click click " sound of its self-locking generation is not enough to It debates user to listen clearly, it is understood that there may be due to not locking caused security risk.

Summary of the invention

Clamping caused by the utility model will solve existing self-locking type clamping head of hand-locking drill clamping sheet less is not thorough and hand Fixed, bungee ring is easy to skid, the inconvenient technical problem of bungee ring installation.

The technical scheme in the invention for solving the above technical problem are as follows:

The utility model discloses a kind of self-locking type clamping head of hand-locking drill, including bore in intracorporal inclined hole can be with for drill body and being located at The clamping jaw of guiding is vertically moved, hand-tight nut is set on drill body and is meshed with the screw thread of clamping jaw, is bolted on the drill body One gasket, gasket are in the lower section of hand-tight nut, the gasket outer rim be equipped with straight up it is outer turn edge, the outer inner wall that turns edge Equipped with handle ratchet wheel；The one bungee ring set that upper surface is turned edge outside the gasket, which is set, to be fixed on hand-tight nut and synchronous movement, The bungee ring is embedded in the mounting groove of hand-tight set, the bungee ring include circle body, setting axially extended in circle body outer Made of two groups from lock set and two groups of clamping assemblies, it is described from lock set include two flexible self-locking heads, the card Tight component includes a reset head and a clamping head, central angle, reset head and adjacent one between described two self-locking heads Central angle between a self-locking head is the multiple proportion of integer, clamping head matching in the lower end of reset head, reset head, self-locking head with It is connected by elastic steel sheet between circle body；The clamping head is matched with handle ratchet wheel；The inner wall of the mounting groove of the hand-tight set is in Circumference uniform distribution is equipped with several and reset head, self-locking head distinguishes matched first card slot, the second card slot, the outer diameter of first card slot Greater than the outer diameter of the second card slot；There is between wherein one group of two self-locking head from lock set opening on the circle body, and Both sides in opening on circle body are equipped with clamp spring hole；The outer end of the clamping head is undaform.

It is described it is hand-tight put on equipped with acoustic hole, the acoustic hole be in from inside to outside extend out it is horn-like, and acoustic hole corresponding Fit over bungee ring position；The hand-tight set inner wall is equipped with several annular guide channels, and the annular guide channel intersects with acoustic hole, and annular Guide groove is in the outer wall of bungee ring；Strainer is equipped in the acoustic hole.

The beneficial effects of the utility model are:

Compared with prior art, the self-locking type clamping head of hand-locking drill of the utility model, there are four self-locking head and two for tool in total Reset head, two reset heads are consistent with effect of self-locking head when self-locking, so, it is equivalent to the effect there are six self-locking head, is mentioned High self-locking effect；

Compared with prior art, the self-locking type clamping head of hand-locking drill of the utility model, circle body are hatch frame, are pacified using circlip Dress, improves the efficiency of installation, in addition, opening is so that bungee circle when in use, improves whole elasticity, so that self-locking, clamping, Release becomes to be more easier；

Compared with prior art, the self-locking type clamping head of hand-locking drill of the utility model, the clamping head of undaform, clamping effect Good, " click click " sound generated between handle ratchet wheel is rung.

Compared with prior art, the self-locking type clamping head of hand-locking drill of the utility model, increases acoustic hole and annular guide channel, makes It obtains " click click " sound that clamping head and handle ratchet wheel generate and is transferred to the external world in expanded form, improve identification degree；The use of strainer, keeps away Exempt from extraneous dust to enter in collet, the service life of collet is caused to reduce.

Detailed description of the invention

Fig. 1 is the stereogram exploded view of the utility model self-locking type clamping head of hand-locking drill；

Fig. 2 is the plan view of the bungee ring of the utility model self-locking type clamping head of hand-locking drill；

Fig. 3 is the plan view of the hand-tight set of the utility model self-locking type clamping head of hand-locking drill；

Fig. 4 is the stereogram exploded view of the part-structure of the utility model self-locking type clamping head of hand-locking drill；

Fig. 5 is the perspective view of the bungee ring with undaform clamping head of the utility model self-locking type clamping head of hand-locking drill；

Fig. 6 is the plan view of the bungee ring with opening of the utility model self-locking type clamping head of hand-locking drill；

Fig. 7 is the structure between the hand-tight set and bungee ring with acoustic hole of the utility model self-locking type clamping head of hand-locking drill Schematic diagram；

Fig. 8 is that the structure of the hand-tight set with acoustic hole and annular guide channel of the utility model self-locking type clamping head of hand-locking drill is shown It is intended to.

Specific embodiment

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments:

Please refer to Fig. 1 to Fig. 6, the utility model provides a kind of self-locking type clamping head of hand-locking drill, including drill body 1 and is located at brill The clamping jaw 2 of guiding can be vertically moved in inclined hole in body 1, hand-tight nut 3 is set in the screw thread phase on drill body 1 and with clamping jaw 2 It engages, a gasket 4 is bolted on the drill body 1, gasket 4 is in the lower section of hand-tight nut 3, and 4 outer rim of gasket is equipped with vertical It is upward it is outer turn edge 5, outer 5 inner walls that turn edge are equipped with handle ratchet wheel 6；One is in outside gasket 47 sets of bungee ring of 5 upper surfaces that turn edge If being fixed on hand-tight nut 3 and synchronous movement, the bungee ring 7 being embedded in the mounting groove 9 of hand-tight set 8, the jump Circlip 7 include made of circle body 10, setting are axially extended in 10 outer of circle body two groups from lock set and two groups of clamping assemblies, institute Stating from lock set includes two flexible self-locking heads 11, and the clamping assembly includes a reset head 12 and a clamping head 13, central angle, reset head 12 between described two self-locking heads 11 and the central angle between an adjacent self-locking head 11 are whole Several multiple proportions, the matching of clamping head 13 pass through between the lower end of reset head 12, reset head 12, self-locking head 11 and circle body 10 Elastic steel sheet 14 connects；The clamping head 13 is matched with handle ratchet wheel 6；The inner wall of the mounting groove 9 of the hand-tight set 8 is circumferentially uniformly distributed Distinguish matched first card slot 15, the second card slot 16 with reset head 12, self-locking head 11 equipped with several, first card slot 15 it is outer Diameter is greater than the outer diameter of the second card slot 16；Have between wherein one group of two self-locking head 11 from lock set on the circle body 10 Opening 17, and the both sides in opening 17 on circle body 10 are equipped with clamp spring hole 18；The outer end of the clamping head 13 is undaform 19.

Fig. 7, Fig. 8 are please referred to, the hand-tight set 8 is equipped with acoustic hole 20, and the acoustic hole 20 is in extend out loudspeaker from inside to outside Shape, and 20 Corresponding matching of acoustic hole is in 7 position of bungee ring；8 inner wall of hand-tight set is equipped with several annular guide channels 21, the ring Shape guide groove 21 intersects with acoustic hole 20, and annular guide channel 21 is in the outer wall of bungee ring 7；Strainer is equipped in the acoustic hole 20 22。

It makes an explanation below to the working principle of the self-locking type clamping head of hand-locking drill of the utility model:

The self-locking type clamping head of hand-locking drill of the utility model, when needing to clamp clamping jaw 2, the initial state of reset head 12 is In the second card slot 16, by the extruding of the second card slot 16, the inside compression deflection of 13 relative resilient steel disc of clamping head 14, at this time Clamping head 13 is detached from handle ratchet wheel 6, and bungee ring 7 is in the unlocked state, at this point, hand-tight set 8 can be rotated and drive 3 turns of hand-tight nut It is dynamic, clamping jaw 2 is clamped, after to be clamped, further rotates hand-tight set 8, as collet constantly locks drill bit, hand-tight set 8 Relative motion is produced between bungee ring 7, finally, when reset head 12 is in the first card slot 15, due to the first card slot 15 Outer diameter is greater than 16 outer diameter of the second card slot, then clamping head 13 flicks outward, and clamping head 13 engages and clamping head 13 with handle ratchet wheel 6 at this time It is slided in handle ratchet wheel 6, clamping head 13 and handle ratchet wheel 6 generate " click click " sound, after collet thoroughly locks drill bit, at this point, hand-tight Nut 3 can not rotate, and clamping head 13 is limited by handle ratchet wheel 6, and bungee ring 7 can not reverse, then prevent hand-tight nut 3 anti- Turn, at this point, continuing fixed to hand 8 applies rotary force, then the opposite bungee ring 7 of hand-tight set 8 rotates, at this point, voiceless sound generates, Show locking in place.When need to unclamp clamping jaw 2, hand-tight set 8 is reversely rotated, is acted on by handle ratchet wheel 6, bungee ring 7 can not rotate, hand-tight Set 8 is rotated relative to bungee ring 7, so that the second card slot 16 is made to be matched to reset head 12, at this point, reset head 12 is squeezed, thus Clamping head 13 is set to be detached from handle ratchet wheel 6, bungee ring 7 unlocks, and fixed 8 rotation conveniently, so that hand-tight nut 3 rotates, smoothly Unlock.

Self-locking type clamping head of hand-locking drill provided by the utility model embodiment is described in detail above, is answered herein The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides Assistant solves the revealed technical solution of the utility model；At the same time, for those skilled in the art, according to the utility model Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be understood For the limitation of the utility model.

Claims (2)

1. a kind of self-locking type clamping head of hand-locking drill, including drill body and it is located at and bores the folder that can vertically move guiding in intracorporal inclined hole Pawl, hand-tight nut are set on drill body and are meshed with the screw thread of clamping jaw, and a gasket is bolted on the drill body, and gasket is in hand The lower section of tight nut, the gasket outer rim be equipped with straight up it is outer turn edge, the outer inner wall that turns edge is equipped with handle ratchet wheel；One is in The bungee ring set of upper surface of turning edge outside gasket sets and is fixed on hand-tight nut and synchronous movement, the bungee ring are embedded in hand In fixed mounting groove, it is characterised in that: the bungee ring include circle body, setting axially extended in circle body outer made of two Group is described to include two flexible self-locking heads, the clamping assembly packet from lock set from lock set and two groups of clamping assemblies A reset head and a clamping head are included, the central angle, reset head between described two self-locking heads and an adjacent self-locking head Between central angle be integer multiple proportion, clamping head match between the lower end of reset head, reset head, self-locking head and circle body Connected by elastic steel sheet；The clamping head is matched with handle ratchet wheel；The inner wall of the mounting groove of the hand-tight set is circumferentially uniformly distributed Matched first card slot, the second card slot are distinguished with reset head, self-locking head equipped with several, and the outer diameter of first card slot is greater than second The outer diameter of card slot；There is opening between wherein one group of two self-locking head from lock set, and on circle body on the circle body Both sides in opening are equipped with clamp spring hole；The outer end of the clamping head is undaform.

2. a kind of self-locking type clamping head of hand-locking drill according to claim 1, it is characterised in that: described hand-tight to put on equipped with acoustic Hole, the acoustic hole are in extend out horn-like from inside to outside, and acoustic hole Corresponding matching is in bungee ring position；The hand-tight set inner wall Equipped with several annular guide channels, the annular guide channel intersects with acoustic hole, and annular guide channel is in the outer wall of bungee ring；The acoustic Strainer is equipped in hole.