CN203509121U - Torque adjusting mechanism of impact drill - Google Patents
Torque adjusting mechanism of impact drill Download PDFInfo
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- CN203509121U CN203509121U CN201320461473.2U CN201320461473U CN203509121U CN 203509121 U CN203509121 U CN 203509121U CN 201320461473 U CN201320461473 U CN 201320461473U CN 203509121 U CN203509121 U CN 203509121U
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- torque
- gear
- torsion
- block teeth
- fixed cap
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Abstract
The utility model relates to the technical field of impact drills, in particular to a torque adjusting mechanism of an impact drill. The torque adjusting mechanism of the impact drill comprises a pressure base arranged on a rotation shaft of the impact drill in a sleeved mode. A compressing mechanism used for adjusting torque output of the impact drill is arranged in the pressure base. The torque adjusting mechanism of the impact drill further comprises a plurality of torque springs, a plurality of spiral tooth blocks corresponding to the torque springs and a torque sleeve. The torque adjusting mechanism is further provided with a torsion locating mechanism, the torsion locating mechanism comprises a gear cover and a fixed cover, a plurality of gear holes are formed in the gear cover and the fixed cover is provided with ejector pins and ejector pin springs. Compared with an existing torque adjusting mechanism, the torque adjusting mechanism has the advantages that the torque springs and the spiral tooth blocks are adopted for compressing the compressing mechanism of the impact drill, so that pressure is evenly dispersed circumferentially, therefore, more labor is saved during torque adjustment, the structure is simple and the production cost is low.
Description
Technical field
The utility model relates to percussion drill technical field, relates in particular to a kind of torque adjustment mechanism of percussion drill.
Background technology
At present, percussion drill mainly comprises power set (as: motor), electric drill impacts conversion equipment, turning cylinder, drill chuck, the front end of drill chuck can be installed different drilling tool (as: centre drills according to purposes, drill bit, reamer, screw tap etc.), the rear end of drill chuck is connected with the front end of turning cylinder, the rear end of turning cylinder is connected with power set by gear mechanism, gear mechanism be used for slowing down rotating speed increase torsion, and rotary axle box is provided with torque adjustment mechanism, impact output mechanism, function switching mechanism, torque adjustment mechanism is the output torque of regulating rotary moving axis as required, impacting output mechanism can drive turning cylinder to be output as conflicting model, function switching mechanism can be changed turning cylinder as required between electric drill pattern and conflicting model.In use, power set drive turning cylinder to rotate by gear mechanism, by turning cylinder, drive drill chuck to rotate, and make drill chuck can carry out electric drill operation or impact operation.
As the patent of invention that Chinese Patent Application No. is 200810062909.4, a kind of multifunctional percussion drill is disclosed, its torque adjustment mechanism, is to regulate moment of torsion to export by regulating single torsion cover to compress degree to single torque spring.The torque adjustment mechanism of the single torque spring of this employing, need to apply larger pressure and could regulate moment of torsion, when regulating moment of torsion, relatively require great effort, and, the parts such as the torsion cover coordinating with single torque spring, moment of torsion rotary sleeve need to design to obtain complicated structure, and production cost is high.
Utility model content
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of torque adjustment mechanism of more laborsaving and simple in structure when regulating moment of torsion, percussion drill that production cost is low.
To achieve these goals, the utility model provides a kind of torque adjustment mechanism of percussion drill, it comprises the pressure seat that is sheathed on described turning cylinder, in described pressure seat, be provided with for regulating the hold-down mechanism of moment of torsion output, described torque adjustment mechanism also comprises several torsion springs, several spiral block teeth, the torque sleeve corresponding with described several torsion springs; The outside of described pressure seat offers several chutes corresponding with described several spiral block teeth, the even compartment of terrain of described several chutes is distributed in the outside of described pressure seat, the both sides of described spiral block teeth are provided with the slide rail mating with described chute, and described spiral block teeth are slidably mounted in described chute; The bottom of described chute offers pressure port, and be inserted in described pressure port at the rear portion of described torsion spring, and the rear end of described torsion spring props up described hold-down mechanism through pressure port; Described spiral block teeth offer groove, in this groove, are provided with briquetting, and be inserted in described groove the front portion of described torsion spring, and the front end of described torsion spring props up described briquetting; The inwall of described torque sleeve arranges internal thread, the arranged outside of described spiral block teeth has the external screw thread mating with described internal thread, described torque sleeve is sheathed on the periphery of described several spiral block teeth by internal thread with externally threaded being threaded, and makes described torque sleeve promote described several spiral block teeth and slide simultaneously by rotating;
Described torque adjustment mechanism is also provided with torsion detent mechanism, described torsion detent mechanism comprises gear lid, is fixed on the ringwise fixed cap of described pressure seat front end, described gear lid is fixed on the front end of described torque sleeve, described fixed cap is positioned at described torque sleeve, described torque sleeve can be rotated around fixed cap, and described gear lid is positioned at the place ahead of described fixed cap; Described gear lid offers several gear holes, described several gear holes are circumferentially-spaced, described fixed cap is provided with ejector pin, ejector pin spring, described ejector pin is flexiblely installed on described fixed cap by ejector pin spring, described fixed cap offers and described gear hole corresponding knock hole on circumference, the front end of described ejector pin is provided with for heading into the portion that heads in described gear hole, this portion of heading into sees through described knock hole and protrudes from the front end of described fixed cap, and described in the portion of heading into be hemisphere shape.
Described torsion spring is 6, and described spiral block teeth also correspond to 6.
Also comprise functional localization sheet, described functional localization sheet is sheathed on the turning cylinder of percussion drill, and functional localization sheet props up the front end of spiral block teeth.
In the pressure port of described pressure seat, be provided with puck, pressure steel ball, the rear end of described torsion spring props up the hold-down mechanism of percussion drill successively through puck, pressure steel ball.
The fixed cap of described torsion detent mechanism is provided with the installing hole for described ejector pin and ejector pin spring fitting; The surface in described torque sleeve outside is provided with the gear scale corresponding with described several gear holes.
Described fixed cap is provided with for the first fixing screw hole, and described gear lid is provided with for the second fixing screw hole.
The utility model beneficial effect is: compare with existing torque adjustment mechanism, torque adjustment of the present utility model mechanism adopts a plurality of torsion springs and spiral block teeth and compresses the hold-down mechanism of percussion drill, making pressure be even circumferential disperses, so more laborsaving when regulating moment of torsion, and simple in structure, production cost is low.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of torque adjustment of the present utility model mechanism.
Fig. 2 is the structural representation of the spiral block teeth of torque adjustment of the present utility model mechanism.
Fig. 3 is the structural representation of pressure seat, torsion spring, spiral block teeth and the functional localization sheet of torque adjustment of the present utility model mechanism while being installed on the turning cylinder of percussion drill.
Fig. 4 is the decomposing schematic representation of Fig. 3.
Fig. 5 is the partial cutaway schematic of torque adjustment of the present utility model mechanism while being installed on percussion drill.
Fig. 6 is the structural representation of the gear lid of torsion detent mechanism of the present utility model.
Fig. 7 is the structural representation of the fixed cap of torsion detent mechanism of the present utility model.
Fig. 8 is the partial cutaway schematic of torsion detent mechanism of the present utility model while being installed on percussion drill.
Reference numeral:
1---torque adjustment mechanism, 11---pressure seat, 111---chute, 112---pressure port, 12---torsion spring, 13---spiral block teeth, 131---slide rail, 132---groove, 133---briquetting, 134---external screw thread, 14---torque sleeve, 141---internal thread, 142---gear scale, 15---functional localization sheet, 16---puck, 17---pressure steel ball, 2---torsion detent mechanism, 22---gear lid, 221---gear hole, 222---the second screw hole, 23---fixed cap, 232---installing hole, 233---the first screw hole, 24---ejector pin, 241---head into portion, 25---ejector pin spring, 3---turning cylinder, 4---hold-down mechanism.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Please refer to Fig. 1～8, torque adjustment of the present utility model mechanism 1, the pressure seat 11 that comprises the turning cylinder 3 that is sheathed on percussion drill, in pressure seat 11, be provided with for regulating the hold-down mechanism 4 of the moment of torsion output of percussion drill, by the compression degree of regulation hold-down mechanism 4, just can regulate the moment of torsion output of percussion drill, this belongs to prior art, repeats no more herein.Torque adjustment of the present utility model mechanism 1 also comprises several torsion springs 12, several spiral block teeth 13, the torque sleeve 14 corresponding with several torsion springs 12.The outside of pressure seat 11 offers several chutes 111 corresponding with several spiral block teeth 13, several even compartment of terrains of chute 111 are distributed in the outside of pressure seat 11, the both sides of spiral block teeth 13 are provided with the slide rail 131 mating with chute 111, spiral block teeth 13 are connected in chute 111 by slide rail 131, spiral block teeth 13 are slidably mounted in chute 111, and spiral block teeth 13 can slide along chute 111 front and back.The bottom of chute 111 offers pressure port 112, and be inserted in pressure port 112 at the rear portion of torsion spring 12, and the rear end of torsion spring 12 sees through the hold-down mechanism 4 that pressure port 112 props up percussion drill; Spiral block teeth 13 offer groove 132, in this groove 132, are provided with briquetting 133, and be inserted in groove 132 front portion of torsion spring 12, and the front end of torsion spring 12 props up briquetting 133.The inwall of torque sleeve 14 arranges internal thread 141, the arranged outside of spiral block teeth 13 has the external screw thread 134 mating with internal thread 141, torque sleeve 14 is sheathed on the periphery of several spiral block teeth 13 by internal thread 141 and being threaded of external screw thread 134, make torque sleeve 14 promote several spiral block teeth 13 and slide simultaneously by rotating.From said structure, can find out, torsion spring 12 is placed between the hold-down mechanism 4 of spiral block teeth 13 and percussion drill, so, can overlap 14 by driving torque and promote 13 slips of spiral block teeth, by spiral block teeth 13 compression torsion springs 12, compressed again the hold-down mechanism 4 of percussion drill, realize the moment of torsion output that regulates percussion drill.
Torque adjustment of the present utility model mechanism 1 is also provided with torsion detent mechanism 2, torsion detent mechanism 2 comprises gear lid 22, is fixed on the ringwise fixed cap 23 of pressure seat 11 front ends, gear lid 22 is fixed on the front end of torque sleeve 14, fixed cap 23 is positioned at torque sleeve 14, torque sleeve 14 can be rotated around fixed cap 23, certainly, torque sleeve 14, gear lid 22, fixed cap 23 are all sheathed on the turning cylinder 3 of percussion drill, like this, fixed cap 23 is fixing, and gear lid 22 can rotate along with torque sleeve 14.And gear lid 22 is positioned at the place ahead of fixed cap 23, specifically, the rear end end face of gear lid 22 and the front end end face of fixed cap 23 are laminating to a certain degree, so just can make the portion that heads into 241 of ejector pin 24 can head in gear hole 221.Gear lid 22 offers several gear holes 221, and several gear holes 221 are circumferentially-spaced, certainly, and gear hole 221 corresponding function shelves or one grade of torsion.Fixed cap 23 is provided with ejector pin 24, ejector pin spring 25, and ejector pin 24 is flexiblely installed on fixed cap 23 by ejector pin spring 25, like this, makes ejector pin 24 have certain retractility.Fixed cap 23 offers and gear hole 221 corresponding knock hole on circumference, the front end of ejector pin 24 is provided with for heading into the portion that heads into 241 in gear hole 221, this heads into portion 241 and through knock hole, protrudes from the front end of fixed cap 23, and the portion that heads into 241 of ejector pin 24 can be headed in gear hole 221; And head into portion 241 and be hemisphere shape, when gear lid 22 is rotated along with torque sleeve 14, to heading into portion 241, produce certain pressure, ejector pin 24 is retracted to a certain degree, and then the portion that heads into 241 is exited from original gear hole 221, until gear lid 22 is not when rotate, ejector pin 24 stretches out again due to the restoring force of spring, the portion that heads into 241 is headed in new gear hole 221, and realization is reorientated.
Preferably, the torsion spring 12 of the utility model torque adjustment mechanism 1 is 6, spiral block teeth 13 also correspond to 6,6 even compartment of terrains of torsion spring 12 are circle distribution, while making torsion spring 12 compress the hold-down mechanism 4 of percussion drill, the hold-down mechanism 4 of percussion drill stressed more even, thus make the moment of torsion output of percussion drill more accurate.
Preferably, torque adjustment of the present utility model mechanism 1 also comprises functional localization sheet 15, and functional localization sheet 15 is sheathed on the turning cylinder 3 of percussion drill, and functional localization sheet 15 props up the front end of spiral block teeth 13, with spacing spiral block teeth 13, spiral block teeth 13 can not skidded off from chute 111.
Preferably, in the pressure port 112 of pressure seat 11, be provided with puck 16, pressure steel ball 17, the rear end of torsion spring 12 props up the hold-down mechanism 4 of percussion drill successively through puck 16, pressure steel ball 17, be that puck 16 is between the rear end and pressure steel ball 17 of torsion spring 12, make the pressure of the rear end of torsion spring 12 can pass through successively puck 16, pressure steel ball 17 and pass to the hold-down mechanism 4 of percussion drill, this structure can make hold-down mechanism 4 stressed more even of percussion drill.Wherein, puck 16 is cylinder.
Torque adjustment of the present utility model mechanism 1 operation principle: when user need to regulate the output torque of percussion drill turning cylinder 3, user can pass through driving torque cover 14 forward or backwards, make torque sleeve 14 promote spiral block teeth 13 backward or to front slide, make again 13 compressions of spiral block teeth or loosen torsion spring 12, thereby make torsion spring 12 compress or loosen the hold-down mechanism 4 of percussion drill, to realize accordingly the increase of percussion drill turning cylinder 3 output torques or to reduce.
Therefore, compare with existing torque adjustment mechanism, torque adjustment of the present utility model mechanism 1 adopts a plurality of (being several) torsion springs 12 and spiral block teeth 13 and compresses the hold-down mechanism 4 of percussion drill, making pressure be even circumferential disperses, so more laborsaving when regulating moment of torsion, and simple in structure, production cost is low.
Preferably, fixed cap 23 is provided with the installing hole 232 for ejector pin 24 and 25 installations of ejector pin spring, the rear sleeve that is ejector pin 24 is located in ejector pin spring 25, and then ejector pin spring 25 is arranged in installing hole 232 again, and the portion that heads into 241 of ejector pin 24 protrudes from the front end of fixed cap 23 through knock hole.
Preferably, the surface in torque sleeve 14 outsides is provided with the gear scale 442 corresponding with several gear holes 221, so that user is adjusted to the output torque needing according to gear scale 442.Wherein, fixed cap 23 is provided with the first screw hole 233, and fixed cap 23 is screwed in pressure seat 11; Gear lid 22 is provided with the second screw hole 222, and gear lid 22 is screwed in the front end of torque sleeve 14.Certainly, above-mentioned gear lid 22, fixed cap 23 etc. all offer for being sheathed on the hole of turning cylinder 3.
Therefore, torque adjustment of the present utility model mechanism 1, in conjunction with torsion detent mechanism 2, can regulate according to gear the size of percussion drill turning cylinder 3 output torques easily.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is modified or is equal to replacement, all belong to protection domain of the present utility model.
Claims (6)
1. the torque adjustment mechanism of a percussion drill, it is characterized in that: the pressure seat that comprises the turning cylinder that is sheathed on percussion drill, in described pressure seat, be provided with for regulating the hold-down mechanism of moment of torsion output, described torque adjustment mechanism also comprises several torsion springs, several spiral block teeth, the torque sleeve corresponding with described several torsion springs; The outside of described pressure seat offers several chutes corresponding with described several spiral block teeth, the even compartment of terrain of described several chutes is distributed in the outside of described pressure seat, the both sides of described spiral block teeth are provided with the slide rail mating with described chute, and described spiral block teeth are slidably mounted in described chute; The bottom of described chute offers pressure port, and be inserted in described pressure port at the rear portion of described torsion spring, and the rear end of described torsion spring props up described hold-down mechanism through pressure port; Described spiral block teeth offer groove, in this groove, are provided with briquetting, and be inserted in described groove the front portion of described torsion spring, and the front end of described torsion spring props up described briquetting; The inwall of described torque sleeve arranges internal thread, the arranged outside of described spiral block teeth has the external screw thread mating with described internal thread, described torque sleeve is sheathed on the periphery of described several spiral block teeth by internal thread with externally threaded being threaded, and makes described torque sleeve promote described several spiral block teeth and slide simultaneously by rotating;
Described torque adjustment mechanism is also provided with torsion detent mechanism, described torsion detent mechanism comprises gear lid, is fixed on the ringwise fixed cap of described pressure seat front end, described gear lid is fixed on the front end of described torque sleeve, described fixed cap is positioned at described torque sleeve, described torque sleeve can be rotated around fixed cap, and described gear lid is positioned at the place ahead of described fixed cap; Described gear lid offers several gear holes, described several gear holes are circumferentially-spaced, described fixed cap is provided with ejector pin, ejector pin spring, described ejector pin is flexiblely installed on described fixed cap by ejector pin spring, described fixed cap offers and described gear hole corresponding knock hole on circumference, the front end of described ejector pin is provided with for heading into the portion that heads in described gear hole, this portion of heading into sees through described knock hole and protrudes from the front end of described fixed cap, and described in the portion of heading into be hemisphere shape.
2. the torque adjustment mechanism of percussion drill according to claim 1, is characterized in that: described torsion spring is 6, and described spiral block teeth also correspond to 6.
3. the torque adjustment mechanism of percussion drill according to claim 1, is characterized in that: also comprise functional localization sheet, described functional localization sheet is sheathed on the turning cylinder of percussion drill, and functional localization sheet props up the front end of spiral block teeth.
4. the torque adjustment mechanism of percussion drill according to claim 1, it is characterized in that: in the pressure port of described pressure seat, be provided with puck, pressure steel ball, the rear end of described torsion spring props up the hold-down mechanism of percussion drill successively through puck, pressure steel ball.
5. the torque adjustment mechanism of percussion drill according to claim 1, is characterized in that: the fixed cap of described torsion detent mechanism is provided with the installing hole for described ejector pin and ejector pin spring fitting; The surface in described torque sleeve outside is provided with the gear scale corresponding with described several gear holes.
6. the torque adjustment mechanism of percussion drill according to claim 5, is characterized in that: described fixed cap is provided with for the first fixing screw hole, and described gear lid is provided with for the second fixing screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461473.2U CN203509121U (en) | 2013-07-30 | 2013-07-30 | Torque adjusting mechanism of impact drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461473.2U CN203509121U (en) | 2013-07-30 | 2013-07-30 | Torque adjusting mechanism of impact drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203509121U true CN203509121U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320461473.2U Expired - Fee Related CN203509121U (en) | 2013-07-30 | 2013-07-30 | Torque adjusting mechanism of impact drill |
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| Country | Link |
|---|---|
| CN (1) | CN203509121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014390A (en) * | 2019-05-08 | 2019-07-16 | 南京汤峰机电有限公司 | Hand-held device |
-
2013
- 2013-07-30 CN CN201320461473.2U patent/CN203509121U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014390A (en) * | 2019-05-08 | 2019-07-16 | 南京汤峰机电有限公司 | Hand-held device |
| CN110014390B (en) * | 2019-05-08 | 2023-12-12 | 南京汤峰机电有限公司 | Hand-held device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20160730 |