CN212191296U - Anti-loose locking drill chuck - Google Patents
Anti-loose locking drill chuck Download PDFInfo
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- CN212191296U CN212191296U CN201921014266.6U CN201921014266U CN212191296U CN 212191296 U CN212191296 U CN 212191296U CN 201921014266 U CN201921014266 U CN 201921014266U CN 212191296 U CN212191296 U CN 212191296U
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Abstract
The invention relates to the technical field of drill chuck mechanical manufacturing, in particular to an anti-loose locking drill chuck, which comprises a drill body, a clamping jaw, a nut, a front sleeve and a rear sleeve and is characterized in that an anti-loose locking assembly is arranged between the nut and the drill body, the anti-loose locking assembly consists of a nut sleeve, a bush, a ratchet wheel and a spring plate, the ratchet wheel is sleeved on the outer side of the drill body and connected with the drill body, the nut sleeve is sleeved on the outer side of the ratchet wheel, the nut sleeve is provided with a locking hole and at least two clamping holes, the front sleeve is rotated to drive the bush to rotate so that the protrusion of the spring plate enters an auxiliary groove of the bush from a groove of the bush, and a pawl is disengaged from the groove of the bush and clamped with the ratchet wheel to realize the anti-loose locking function.
Description
Technical Field
The invention relates to the technical field of drill chuck mechanical manufacturing, in particular to a locking drill chuck which has a simple structure, effectively improves locking torque, and achieves the purposes that the lock is not loosened and the drill chuck does not lose efficacy when in work.
Background
As is well known, the development of the existing electric tools tends to charging portable electric tools, and the direct current electric drill is different from the alternating current electric drill and has an emergency stop phenomenon, namely when a switch of the electric drill is loosened, a motor can immediately stop rotating, at the moment, a drill chuck on the electric drill also can immediately stop rotating along with a main shaft of the electric drill, a shell on the electric drill generates rotating inertia momentum, and the inertia moves towards the direction that the drill chuck is loosened. In addition, the rechargeable electric tool has a clutch vibration function, the clutch vibration function and the inertia moment generated by the sudden stop of the electric drill can increase the loosening capacity of the chuck, and the drill chuck can be more easily loosened.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the anti-loosening locking drill chuck which has a simple structure, effectively improves the locking torque, and achieves the purposes that the lock is not loosened and the drill chuck does not lose efficacy when in work.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a locking drill chuck comprises a drill body, clamping jaws, a nut, a front sleeve and a rear sleeve, wherein the three clamping jaws are respectively arranged in three equant inclined holes of the drill body, the nut is arranged in a nut groove on the side surface of the drill body, the nut is fixed by the front sleeve, the nut and the threads of the clamping jaws form a thread transmission mechanism, the front sleeve is fixedly connected with the nut, the front end of the rear sleeve is matched and rotatably connected with the front sleeve, the rear end of the rear sleeve is fixedly connected with the drill body, and the rear part of the drill body is provided with a threaded hole, the locking chuck is characterized in that a locking assembly is arranged between the nut and the drill body, the locking assembly comprises a nut sleeve, a lining, a ratchet wheel and a spring plate, the ratchet wheel is sleeved on the outer side of the drill body and connected with the drill body, the outer side of the ratchet wheel is sleeved with the nut sleeve, the nut sleeve is provided with a locking hole and at least two clamping holes, the nut sleeve is sleeved on the, the outer side of the nut sleeve is provided with a lining sleeve, the inner side of the lining sleeve is contacted with the nut sleeve, the outer side of the lining sleeve is fixedly connected with the front sleeve, the lining sleeve is provided with a lining sleeve groove corresponding to the locking hole and the clamping hole, the bush at one side of the pawl direction of the bush groove corresponding to the position of the clamping hole is provided with a bush auxiliary groove, an arc-shaped elastic sheet with a gap is arranged between the nut sleeve and the ratchet wheel, one end of the elastic sheet is provided with a pawl bent inwards, the pawl is matched with the ratchet on the ratchet wheel, the arc-shaped elastic sheet is provided with an elastic sheet bulge matched with the locking hole and the clamping hole on the nut sleeve, the elastic sheet bulge passes through the nut sleeve to be matched with a lining groove arranged on the lining, the front sleeve is rotated to drive the lining to rotate, so that the elastic sheet protrusion enters the auxiliary lining groove from the lining groove, and the pawl is separated from the lining groove and clamped with the ratchet wheel to realize the anti-loosening and locking functions.
The elastic sheet between the adjacent elastic sheet bulges consists of an arc-shaped sheet and a straight sheet, the arc-shaped sheet is convex towards the outside and is contacted with the nut sleeve, two ends of the arc-shaped sheet are respectively connected with the straight sheet, the straight sheet is connected with the elastic sheet bulges, and the deformation force is increased by matching the arc-shaped sheet with the straight sheet, so that the anti-loosening moment is increased.
The front sleeve and the lining are integrated, and the lining groove and the lining auxiliary groove are directly arranged on the lining and the front sleeve.
The shell fragment of the invention is made up of locking shell fragment and locking shell fragment, the end of the said locking shell fragment has pawls, there are at least two shell fragments that are protruding on the locking shell fragment of the side of pawl, the said nut sheathes and has locking hole and anti-loosening hole corresponding to protrusion of shell fragment, both ends of the said anti-loosening shell fragment have joint blocks stretching out of the outside, the middle part of the said anti-loosening shell fragment has shell fragment to protrude, the said nut sheathes have joint hole and anti-loosening hole cooperating with joint block and shell fragment to protrude, there are bush grooves corresponding to protrusion of shell fragment on the said bush, the bush on the pawl direction one side of the said bush groove has bush auxiliary grooves, realize the locking function of locking through locking shell fragment and cooperation of the anti-loosening shell fragment.
According to the invention, the inner side surface of the bushing between the bushing groove and the bushing auxiliary groove is provided with the anti-abrasion metal sheet, so that the practical service life of the bushing is prolonged through the anti-abrasion metal sheet, and the bushing is prevented from being abraded.
The ratchet wheel is arranged on the front side or the rear side of the nut, and is convenient to mount.
The invention is characterized in that an anti-loose locking assembly is arranged between the nut and the drill body, the anti-loose locking assembly comprises a nut sleeve, a lining, a ratchet wheel and a spring plate, the ratchet wheel is sleeved outside the drill body and is connected with the drill body, the outer side of the ratchet wheel is sleeved with the nut sleeve, the nut sleeve is provided with a locking hole and at least two clamping holes, the nut sleeve is sleeved outside the ratchet wheel and is fixedly connected with the nut, the outer side of the nut sleeve is provided with the lining, the inner side of the lining is contacted with the nut sleeve, the outer side of the lining is fixedly connected with the front sleeve, the lining is provided with lining grooves corresponding to the locking hole and the clamping hole, the lining on one side of the lining groove corresponding to the clamping hole in the pawl direction is provided with a lining auxiliary groove, an arc-shaped spring plate with a gap is arranged between the nut sleeve and the ratchet wheel, one end of the spring plate is, the pawl is matched with a ratchet on the ratchet wheel, the arc-shaped elastic sheet is provided with an elastic sheet bulge matched with a locking hole and a clamping hole on the nut sleeve, the elastic sheet bulge penetrates through the nut sleeve to be matched with a lining groove arranged on the lining, the front sleeve is rotated to drive the lining to rotate so that the elastic sheet bulge enters a lining auxiliary groove from the lining groove, the pawl is separated from the lining groove to be clamped with the ratchet wheel to realize the anti-loosening locking function, the elastic sheet between the adjacent elastic sheet bulges consists of an arc-shaped sheet and a straight sheet, the arc-shaped sheet is raised towards the outside and is contacted with the nut sleeve, two ends of the arc-shaped sheet are respectively connected with the straight sheet, the straight sheet is connected with the elastic sheet bulge, the deformation force is increased by matching the arc-shaped sheet and the straight sheet, the anti-loosening torque is further increased, the front sleeve and the lining are arranged into an integral structure, and the lining groove and, the shell fragment by locking shell fragment and locking shell fragment make up, the end of the said locking shell fragment has pawls, there are at least two shell fragment embossments on the locking shell fragment on the side of pawl, the said nut sheathes and is equipped with locking hole and anti-loosening hole corresponding to the shell fragment embossments, the both ends of the said anti-loosening shell fragment have joint blocks stretching out of the outside, the middle part of the said anti-loosening shell fragment has shell fragment embossments, the said nut sheathes and is equipped with joint hole and anti-loosening hole matching with joint block and shell fragment embossments, the said bush is equipped with the bush groove corresponding to shell fragment embossment, the bush on one side of pawl direction of the said bush groove is equipped with the bush auxiliary groove, realize the locking function of locking through the cooperation of locking shell fragment and anti-loosening shell fragment, the bush medial surface between bush groove and bush auxiliary groove is equipped with the anti-wear sheetmetal, increase the practical, the anti-abrasion bushing is prevented, the ratchet wheel is arranged on the front side or the rear side of the nut, the installation is convenient, the structure is simple, the locking torque is effectively improved, and the advantages that the lock is not loosened and the drill chuck is not invalid when the drill chuck works are achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of fig. 1, wherein 2-1 is a release state view and 2-2 is a locking state view.
Fig. 3 is a schematic structural diagram of the elastic sheet in fig. 1, wherein 3-1 is a schematic structural diagram of a first elastic sheet, and 3-2 is a schematic structural diagram of a second elastic sheet.
FIG. 4 is a schematic view of a nut shell configured to mate with the spring plate of FIG. 3, FIG. 4-1 is a schematic view of a 3-1 mating nut shell, and FIG. 4-2 is a schematic view of a 3-2 mating nut shell.
Fig. 5 is a schematic view of the construction of the bushing of fig. 1.
Fig. 6 is a schematic structural view of another elastic sheet according to the present invention.
Fig. 7 is a schematic view of the structure of a nut shell engaged with the spring plate of fig. 6.
Fig. 8 is an assembly view of fig. 6 and 7.
FIG. 9 is a top view of the drill chuck in the embodiment of the present invention, wherein 9-1 is a free state diagram, 9-2 is a locked state diagram, and 9-3 is a relationship diagram of the arc-shaped piece and the straight piece in the locked state.
FIG. 10 is a diagram showing the positional relationship between the nut and the ratchet wheel in the present invention, 10-1 is a diagram showing a first positional relationship, 10-2 is a diagram showing a second positional relationship, and 10-3 is a diagram showing a third positional relationship.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in attached figures 1-8, the anti-loose locking drill chuck comprises a drill body 1, three clamping jaws 2, a nut 3, a front sleeve 4 and a rear sleeve 5, wherein the three clamping jaws 2 are respectively arranged in three equally-divided inclined holes of the drill body 1, the nut 3 is arranged in a nut groove on the side surface of the drill body 1, the nut 3 is fixed by the front sleeve 4, the screw threads of the nut 3 and the clamping jaws 2 form a screw thread transmission mechanism, the front sleeve 4 is fixedly connected with the nut 3, the front end of the rear sleeve 5 is matched and rotatably connected with the front sleeve 4, the rear end of the rear sleeve 5 is fixedly connected with the drill body 1, the rear part of the drill body 1 is provided with a screw thread hole, the anti-loose locking drill chuck is characterized in that an anti-loose locking assembly is arranged between the nut 3 and the drill body 1, the anti-loose locking assembly consists of a nut sleeve 6, a bush 7, a ratchet 8 and a spring plate 9, the ratchet 8 is sleeved on the outer side of the drill body 1 and connected, the nut sleeve 6 is provided with a locking hole 10 and at least two clamping holes 11, the nut sleeve 6 is sleeved on the outer side of the ratchet wheel 8 and is fixedly connected with the nut 3, the outer side of the nut sleeve 6 is provided with a lining 7, the inner side of the lining 7 is contacted with the nut sleeve 6, the outer side of the lining 7 is fixedly connected with the front sleeve 4, the lining 7 is provided with a lining groove 12 corresponding to the locking hole 10 and the clamping hole 11, the lining 7 on one side of the lining groove 12 corresponding to the clamping hole 11 in the pawl direction is provided with a lining auxiliary groove 13, an arc-shaped elastic sheet 9 with a gap is arranged between the nut sleeve 6 and the ratchet wheel 8, one end of the elastic sheet 9 is provided with a pawl 14 bending inwards, the pawl 14 is matched with a ratchet on the ratchet wheel 8, the arc-shaped elastic sheet 9 is provided with an elastic sheet bulge 15 matched with the locking hole 10 and the clamping hole 11 on the nut sleeve 6, the elastic sheet bulge 15 passes through the nut sleeve 6 and is matched with, the front sleeve 4 and the sleeve auxiliary groove 13 are directly arranged on the sleeve 7 and the elastic sheet 9 consists of a locking elastic sheet 18 and a locking elastic sheet 19, the end part of the locking elastic sheet 18 is provided with a pawl 14, the locking elastic sheet 18 on the side of the pawl 14 is provided with at least two elastic sheet protrusions 15, the nut sleeve 6 is provided with a locking hole 10 and a locking hole 22 corresponding to the elastic sheet protrusions, the two ends of the locking elastic sheet 19 are provided with clamping blocks 20 extending outwards, the middle part of the locking elastic sheet 19 is provided with an elastic sheet protrusion 15, the nut sleeve 6 is provided with a clamping hole 21 and a locking hole 22 matched with the clamping blocks 20 and the elastic sheet protrusions 15, the bushing 7 is provided with a bushing groove 12 corresponding to the elastic sheet protrusion 15, the bushing 7 on one side of the bushing groove 12 in the direction of the pawl 14 is provided with a bushing auxiliary groove 13, the locking function is realized through the matching effect of the locking elastic sheet 18 and the locking elastic sheet 19, the inner side surface of the bushing 7 between the bushing groove 12 and the bushing auxiliary groove 13 is provided with an anti-abrasion metal sheet 23, the practical service life of the bushing 7 is prolonged through the anti-, the bush 7 is prevented from being worn, and the ratchet wheel 8 is arranged on the front side or the rear side of the nut 3 (figure 10) and is convenient to mount.
Examples
The invention is shown in the figure (figure 9) in the use principle: when the drill chuck clamps a drilling tool, a front sleeve of the drill chuck is rotated, the front sleeve drives a lining to rotate, a lining partition is arranged between a lining groove on the lining and a lining auxiliary groove, a lining partition C and a lining partition F on the lining drive a spring sheet bulge b and a spring sheet bulge C to rotate, the spring sheet bulge b and the spring sheet bulge C are arranged in two clamping holes of a nut sleeve, the nut sleeve is driven to rotate by the spring sheet, the nut and the nut sleeve are fixedly connected, namely the nut is driven to rotate, the nut and the clamping jaw are connected by threaded engagement, the clamping jaw is driven to move back and forth in a drill body hole by the nut rotation, and the clamping jaw moves back and forth, namely the; when the clamping jaw clamps the drilling tool, the clamping jaw stops moving, namely, the nut is prevented from rotating, through the connection relation, the elastic sheet bulge B and the elastic sheet bulge C prevent the lining from blocking C and the lining from blocking F from rotating, when an external force is applied to the drilling tool, the lining blocks C and the lining from blocking F, the elastic sheet bulge B and the elastic sheet bulge C are forced to deform, the lining blocks C and the lining from blocking F and cross the elastic sheet bulge B and the elastic sheet bulge C, at the moment, the elastic sheet bulge B moves to the lining auxiliary groove B from the lining groove D, the elastic sheet bulge C moves to the lining auxiliary groove E from the lining groove G, meanwhile, the elastic sheet bulge D moves to the position of the lining H, and the lining H presses the elastic sheet bulge D to enable the elastic; this process is a locking process.
When the electric drill works and is in emergency stop action, when the front sleeve generates a rotating torque in a loosening direction M, the lining partition C and the lining partition F press the elastic sheet protrusion B and the elastic sheet protrusion C to deform, the deformation force of the elastic sheet protrusion B and the elastic sheet protrusion C prevents the lining partition C and the lining partition F from moving towards the direction M, when the force of the lining partition C and the lining partition F towards the direction M is larger than the elastic sheet protrusion deformation force, the elastic sheet protrusion B and the elastic sheet protrusion C can cross the lining partition C and the lining partition F, the elastic sheet protrusion B moves to the lining groove D from the lining auxiliary groove B, the elastic sheet protrusion C moves to the lining groove G from the lining auxiliary groove E, and the maximum deformation force of the elastic sheet protrusion is the loosening torque;
the bush cuts off C to press the spring sheet bulge b, when the spring sheet is forced to deform, the arc sheet on the spring sheet is set as a spring sheet arc, the straight sheet is set as a spring sheet fulcrum, the spring sheet bulge b takes a spring sheet arc e and a spring sheet arc h as fulcrums to move towards the circle center direction for deformation, a certain gap is formed between the spring sheet fulcrum f and a spring sheet fulcrum g and a ratchet wheel, when the gap disappears due to the deformation of the spring sheet bulge b, the spring sheet fulcrum f and the spring sheet fulcrum g are contacted with the ratchet wheel, when the bush cuts off C to continue to press the spring sheet bulge b, the spring sheet bulge b forces the spring sheet to radially deform by taking the spring sheet fulcrum f and the spring sheet fulcrum g as fulcrums, the fulcrums are changed from the spring sheet arc e and the spring sheet arc h into the spring sheet fulcrum f and the spring sheet fulcrum g, the elastic deformation arm is shortened, in a similar way, the deformation force of the elastic sheet bulge c is increased due to the change of the deformation force arm, the increased deformation force is the increased anti-loosening torque, and the locking device has the advantages of simple structure, effectively improved locking torque, no loosening of the lock during the working of the drill chuck, no failure and the like.
Claims (6)
1. A locking drill chuck comprises a drill body, clamping jaws, a nut, a front sleeve and a rear sleeve, wherein the three clamping jaws are respectively arranged in three equant inclined holes of the drill body, the nut is arranged in a nut groove on the side surface of the drill body, the nut is fixed by the front sleeve, the nut and the threads of the clamping jaws form a thread transmission mechanism, the front sleeve is fixedly connected with the nut, the front end of the rear sleeve is matched and rotatably connected with the front sleeve, the rear end of the rear sleeve is fixedly connected with the drill body, and the rear part of the drill body is provided with a threaded hole, the locking chuck is characterized in that a locking assembly is arranged between the nut and the drill body, the locking assembly comprises a nut sleeve, a lining, a ratchet wheel and a spring plate, the ratchet wheel is sleeved on the outer side of the drill body and connected with the drill body, the outer side of the ratchet wheel is sleeved with the nut sleeve, the nut sleeve is provided with a locking hole and at least two clamping holes, the nut sleeve is sleeved on the, the outer side of the nut sleeve is provided with a lining sleeve, the inner side of the lining sleeve is contacted with the nut sleeve, the outer side of the lining sleeve is fixedly connected with the front sleeve, the lining sleeve is provided with a lining sleeve groove corresponding to the locking hole and the clamping hole, the bush at one side of the pawl direction of the bush groove corresponding to the position of the clamping hole is provided with a bush auxiliary groove, an arc-shaped elastic sheet with a gap is arranged between the nut sleeve and the ratchet wheel, one end of the elastic sheet is provided with a pawl bent inwards, the pawl is matched with the ratchet on the ratchet wheel, the arc-shaped elastic sheet is provided with an elastic sheet bulge matched with the locking hole and the clamping hole on the nut sleeve, the elastic sheet bulge passes through the nut sleeve to be matched with a lining groove arranged on the lining, the front sleeve is rotated to drive the lining to rotate, so that the elastic sheet protrusion enters the auxiliary lining groove from the lining groove, and the pawl is separated from the lining groove and clamped with the ratchet wheel to realize the anti-loosening and locking functions.
2. The anti-loosening and locking drill chuck as claimed in claim 1, wherein the resilient plate comprises a locking resilient plate and a locking resilient plate, the end of the locking resilient plate is provided with a pawl, the locking resilient plate on the side of the pawl is provided with at least two resilient plate protrusions, the nut sleeve is provided with a locking hole and an anti-loosening hole corresponding to the resilient plate protrusions, the two ends of the locking resilient plate are provided with clamping blocks extending outwards, the middle of the locking resilient plate is provided with a resilient plate protrusion, the nut sleeve is provided with a clamping hole and an anti-loosening hole matched with the clamping block and the resilient plate protrusion, the bushing is provided with a bushing groove corresponding to the resilient plate protrusion, the bushing on one side of the bushing groove in the pawl direction is provided with a bushing auxiliary groove, and the anti-loosening and locking function is realized through the cooperation of the locking resilient plate and the locking resilient plate.
3. The anti-loose locking drill chuck as claimed in claim 1 or 2, wherein the spring plate between adjacent spring plate protrusions is composed of an arc-shaped plate and a straight plate, the arc-shaped plate protrudes towards the outside and contacts with the nut sleeve, two ends of the arc-shaped plate are respectively connected with the straight plate, the straight plate is connected with the spring plate protrusions, and the arc-shaped plate and the straight plate are matched to increase the deformation force, thereby increasing the anti-loose torque.
4. An anti-loose locking drill chuck as claimed in claim 1 or 2, characterized in that the front sleeve and the bush are provided as an integral structure, and the bush groove and the bush auxiliary groove are provided directly on the bush and the front sleeve.
5. The anti-loose locking drill chuck as claimed in claim 1 or 2, wherein an anti-wear metal plate is provided on the inner side of the bushing between the bushing groove and the bushing auxiliary groove, so as to increase the practical life of the bushing.
6. An anti-loose locking drill chuck according to claim 1 or 2, characterized in that the ratchet wheel is arranged on the front side or the rear side of the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921014266.6U CN212191296U (en) | 2019-07-02 | 2019-07-02 | Anti-loose locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921014266.6U CN212191296U (en) | 2019-07-02 | 2019-07-02 | Anti-loose locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212191296U true CN212191296U (en) | 2020-12-22 |
Family
ID=73806098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921014266.6U Active CN212191296U (en) | 2019-07-02 | 2019-07-02 | Anti-loose locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212191296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508839A (en) * | 2019-07-02 | 2019-11-29 | 山东威达雷姆机械有限公司 | A kind of anti-loosening locking drill chuck |
-
2019
- 2019-07-02 CN CN201921014266.6U patent/CN212191296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508839A (en) * | 2019-07-02 | 2019-11-29 | 山东威达雷姆机械有限公司 | A kind of anti-loosening locking drill chuck |
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