CN214720816U - Improved dual-purpose easy-to-operate safety percussion drill - Google Patents

Abstract

The utility model discloses an easy safe impact of operation of improved generation dual purpose bores belongs to the electric impact drill field. The utility model discloses a percussion drill sets up the boss that splines on the shell front end cylinder section of percussion drill main part, evenly distributed along circumference on the intra-annular lateral wall of staple bolt of auxiliary handle subassembly has a plurality of location tooth's socket that matches with the boss that splines mentioned above, makes the auxiliary handle subassembly difficult to rotate after installing, has improved the installation fastness of auxiliary handle subassembly, and can carry out the nimble setting to the installation angle of auxiliary handle subassembly, makes things convenient for the nimble operation of percussion drill; in addition, a locking nut is embedded at one end of the opening of the hoop ring, a locking screw is integrally connected with the upper end of the auxiliary handle, the auxiliary handle is used as a locking bolt of the hoop ring, the hoop ring is locked and fixed on the main body of the electric impact drill while the auxiliary handle is installed, and the locking operation is flexible and convenient; meanwhile, the guide ruler is integrated on the hoop ring, so that the structure is simpler and more compact, and the flexible control of the punching depth is facilitated.

Description

Improved dual-purpose easy-to-operate safety percussion drill

Technical Field

The utility model relates to an impact drill, more specifically say, relate to an easy operation safety impact of improved generation dual purpose bores.

Background

The impact electric drill is a common electric tool in production and life, can realize a dual-purpose working mode by using a single drill mode and an impact drill mode, can be suitable for impact punching of concrete floors, walls, bricks, stones, wood boards and multilayer materials, and can also be used for drilling of materials such as wood, metal, ceramics, plastics and the like.

When the existing impact electric drill uses an impact drill function, an auxiliary handle is usually required to be arranged at the front end due to the fact that work is accompanied by large vibration, so that an operator can conveniently operate with two hands, and the operation stability of the impact electric drill is improved. The auxiliary handle of current impact electric drill adopts staple bolt structrual installation at the front end of impact electric drill usually, like "an impact function adjusts reliable and stable high stability impact electric drill" etc. that chinese patent number ZL201820223616.9 discloses, the joint strength of auxiliary handle and impact electric drill main part mainly relies on the bolted connection intensity of staple bolt structure, rotation appears easily to auxiliary handle during the use, and then easily not hard up deviate from, although the staple bolt inboard of a lot of auxiliary handles is equipped with skid proof block, nevertheless because the front end of impact electric drill is the smooth face of cylinder, still can't prevent effectively that auxiliary handle from rotating the pine and taking off.

In addition, the working mode switching of the impact electric drill is mostly realized by adopting an impact toggle switch to drive a shifting sheet to be matched with the rear end of an output main shaft, and in a single-drill mode, the shifting sheet is abutted against the rear end of the output main shaft to separate an end face ratchet of an impact gear from an end face ratchet on an impact support so as to realize the single-drill mode; in the 'impact drill' mode, the plectrum leaves the rear end of the output main shaft, and at the moment, when in use, the end face ratchet of the impact gear is combined with the end face ratchet on the impact bracket, and the impact gear rotates and simultaneously vibrates back and forth along with the output main shaft, so that the 'impact drill' mode work is realized. No matter in a single-drill mode or a percussion drill mode, the output main shaft needs to act on the impact support, so that the structural strength requirement on the impact support is high, the strength of the impact support is also a vulnerable part in the percussion electric drill, and the use stability and the service life of the percussion electric drill are influenced.

Disclosure of Invention

1. Technical problem to be solved by the utility model

An object of the utility model is to overcome the existing percussion drill and have the auxiliary handle easily rotate the slippage, lock the operation flexibility relatively poor etc. not enough, provide a improved generation dual-purpose easy operation safety percussion drill, adopt the technical scheme of the utility model, set up the rotation stopping boss on the shell front end cylinder section of electric impact drill main part, evenly distributed has a plurality of location tooth sockets that cooperate with above-mentioned rotation stopping boss along circumference on the staple bolt intra-annular sidewall of auxiliary handle subassembly, make the auxiliary handle subassembly difficult to rotate after the installation, improved the installation fastness of auxiliary handle subassembly, and can carry out the setting of location in a flexible way to the installation angle of auxiliary handle subassembly, facilitate the flexible operation of percussion drill; in addition, a locking nut is embedded at one end of the opening of the hoop ring, a locking screw is integrally formed at the upper end of the auxiliary handle in an injection molding mode, the auxiliary handle is used as a locking bolt of the hoop ring, the hoop ring is locked and fixed on the main body of the electric impact drill while the auxiliary handle is installed, the locking operation is flexible and convenient, and the disassembly and the assembly are rapid; meanwhile, the guide ruler is integrated on the hoop ring, so that the structure is simpler and more compact, and the flexible control of the punching depth is convenient;

the utility model discloses a it is not enough that another aim at overcomes current impact drill exists and strikes support fragile, life weak point such as short, adopt the technical scheme of the utility model, it is equipped with enhancement baffle to lie in the plectrum rear side on strikeing the support, and it is spacing around the both ends of enhancement baffle are respectively on the inside wall of shell, it transversely with strikeing support integrated into one piece to strengthen the baffle as the inserts, utilize to strengthen the baffle and further strengthened the structural strength who strikes the support, and it is direct spacing on the shell that strikes the brill to strengthen the baffle, the wholeness of strikeing the support and strikeing the brill shell has been strengthened, the axial effort that makes the output main shaft is effectively transmitted to the organism, prevented to strike support and shell coupling part and damage, the life who strikes the brill has been improved.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses an easy safe impact of operating of improved generation dual purpose bores, including impact electric drill main part and auxiliary handle subassembly, wherein:

the front end of the shell of the electric impact drill main body is provided with a section of cylindrical section, and the outer wall of the cylindrical section is provided with a rotation stopping boss;

the auxiliary handle assembly comprises a hoop ring, an auxiliary handle, a locking screw, a locking nut, a guide ruler and a guide ruler locking button, wherein the inner circumference of the hoop ring is matched with the diameter of a cylindrical section of the electric impact drill main body, a plurality of positioning tooth grooves matched with the rotation stopping bosses are uniformly distributed on the inner side wall of the hoop ring along the circumferential direction, the locking nut is embedded at one open end of the hoop ring, a through hole is formed in the other open end of the hoop ring, the locking screw is formed into a whole with the auxiliary handle in an injection molding mode as an insert, the locking screw and the auxiliary handle are coaxially arranged, and the locking screw penetrates through the through hole in the opening of the hoop ring and then is in threaded connection with the locking nut for tightening the hoop ring; one side of staple bolt ring be equipped with the axial parallel guide chi mounting hole of staple bolt ring, guide chi slidable mounting in the guide chi mounting hole, guide chi lock button locate on the hoop for unblock or lock the guide chi.

Furthermore, the positions of the inner side wall of the hoop ring close to the two sides are respectively and uniformly distributed with positioning tooth grooves, so that the hoop ring can be arranged on the main body of the electric impact drill in a forward and reverse direction.

Further, the installation cavity of guide ruler lock button on the staple bolt ring be perpendicular with the guide ruler installation hole, guide ruler lock button install in the installation cavity, and the direction of pressing along guide ruler lock button on the guide ruler lock button is equipped with in proper order and unlocks the position and lock the position, the lock position on be equipped with the guide ruler outer wall on the location tooth matched with latch that sets up, guide ruler lock button and installation cavity between still be equipped with and be used for making guide ruler lock button press the spring that resets in order to realize that the unlocks position is switched with the lock position.

Furthermore, the outer shell of the electric impact drill main body and the outer wall of the auxiliary handle are also subjected to secondary injection molding to form a soft rubber layer.

Furthermore, a fixed handle is integrally formed on the shell of the electric impact drill main body, a control circuit is arranged in the fixed handle, a power switch, a button and a reversing toggle button which are electrically connected with the control circuit are respectively arranged on the fixed handle, the button is arranged on the front side of the fixed handle, the power switch is positioned on the rear side of the button and is arranged on one side surface of the fixed handle, and the reversing toggle button is positioned on the upper part of the button and is arranged on the fixed handle in a left-right penetrating manner; the upper part of the shell of the electric impact drill main body is also provided with a speed regulating knob electrically connected with the control circuit.

Furthermore, a motor assembly, a cooling fan, an impact support, a gear shaft, a transmission gear wheel, an output main shaft and a self-tightening drill chuck are further arranged in a shell of the electric impact drill main body, the impact support is fixedly arranged in the shell, the front end and the rear end of a rotor shaft of the motor assembly are respectively rotatably arranged in the shell through the impact support and a second bearing, the cooling fan is connected with the front end of the rotor shaft of the motor assembly through a spline, a cooling hole corresponding to the cooling fan is formed in the shell, and the gear shaft is arranged at the front end of the rotor shaft of the motor assembly; the upper part of the impact support is fixedly provided with a first end face vibration ratchet, the rear end of the output main shaft is rotatably supported in a central hole of the first end face vibration ratchet, the front end of the output main shaft is supported in the shell through a first bearing, the transmission large gear is arranged on the output main shaft and is meshed with the gear shaft, the rear end face of the transmission large gear is also provided with a second end face vibration ratchet matched with the first end face vibration ratchet, the rear end of the output main shaft is arc-shaped, the upper part of the impact support is also provided with a shifting sheet which can be abutted against the rear end of the output main shaft to separate the first end face vibration ratchet from the second end face vibration ratchet, the upper part of the shell is provided with an impact shifting button connected with the upper end of the shifting sheet, the impact support is provided with a reinforcing baffle plate at the rear side of the shifting sheet, and the two ends of the reinforcing baffle plate are respectively limited on the inner side wall of the shell in the front and back directions, the reinforced baffle is transversely integrated with the impact support as an insert, the front ends of the output main shaft and the shell are also provided with shaft sleeves, and the self-clinching drill chuck is arranged at the front end of the output main shaft.

Furthermore, the gear shaft and the transmission gear wheel are both helical gears.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses an easy safe percussion drill of operation of improved generation dual purpose, it includes electric impact drill main part and auxiliary handle subassembly, set up the boss that splines on the shell front end cylinder section of electric impact drill main part, evenly distributed has a plurality of location tooth's socket that cooperatees with above-mentioned boss that splines along circumference on the intra-annular lateral wall of staple bolt of auxiliary handle subassembly, make the auxiliary handle subassembly difficult to rotate after the installation, improved the installation fastness of auxiliary handle subassembly, and can carry out nimble location setting to the installation angle of auxiliary handle subassembly, the nimble operation of convenient percussion drill; in addition, a locking nut is embedded at one end of the opening of the hoop ring, a locking screw is integrally formed at the upper end of the auxiliary handle in an injection molding mode, the auxiliary handle is used as a locking bolt of the hoop ring, the hoop ring is locked and fixed on the main body of the electric impact drill while the auxiliary handle is installed, the locking operation is flexible and convenient, and the disassembly and the assembly are rapid; meanwhile, the guide ruler is integrated on the hoop ring, so that the structure is simpler and more compact, and the flexible control of the punching depth is convenient;

(2) the utility model discloses an improved generation dual purpose easy operation safety percussion drill, the position department that leans on two sides on the inside wall of its staple bolt ring has evenly distributed location tooth's socket respectively to the staple bolt ring can be installed in the electric impact drill main part positive and negative, can be according to the use custom of different operators change the mounted position of auxiliary handle, satisfy the different custom of user's operation, improved the operation flexibility and the security of percussion drill;

(3) the utility model discloses an easy safe percussion drill of operation of improved generation dual purpose, its guide bar lock button installation cavity on the staple bolt ring is perpendicular with the guide bar installation hole, guide bar lock button is installed in the installation cavity, and the last unlocking position and the lock position of being equipped with in proper order along the direction of pressing of guide bar lock button on the guide bar lock button, be equipped with the latch that matches with the location tooth that sets up on the guide bar outer wall in the lock position, still be equipped with between guide bar lock button and the installation cavity and be used for making guide bar lock button press the reset in order to realize unlocking the spring that the position switches over with the lock position, utilize guide bar lock button to realize the locking or the unblock of guide bar, easy and convenient operation;

(4) the utility model discloses an improved generation dual purpose easy operation safety percussion drill, it has soft glue film still to carry on the injection moulding twice on the shell of electric impact drill main part and the outer wall of auxiliary handle, utilizes the flexible glue layer to improve electric impact drill's operation travelling comfort, has reduced the both hands that shock vibration brought and has sent out numb problem;

(5) the utility model discloses an improved generation dual purpose easy operation safety impact drill, integrated into one piece has fixed handle on its impact electric drill main part's the shell, be equipped with control circuit in the fixed handle, be equipped with switch, button and the switching-over toggle button with foretell control circuit electric connection on the fixed handle respectively, the button is located the front side of fixed handle, switch is located the rear side of button and locates on one side of fixed handle, the switching-over toggle button is located the upper portion of button and locates on the fixed handle with running through from side to side, the shell upper portion of impact electric drill main part still is equipped with the speed governing knob with foretell control circuit electric connection; the impact drill can be conveniently controlled by one hand through the arrangement of the installation positions of the power switch, the button and the reversing toggle button, and the reversing toggle button is designed in a left-right penetrating manner, so that the reversing operation is more convenient and flexible, and the impact drill is easier to operate;

(6) the utility model discloses an easy operation safety impact of improved generation dual purpose bores, still be equipped with motor assembly in its shell of impact electric drill main part, radiator fan, strike the support, the gear shaft, the transmission gear wheel, output main shaft and self-tightening drill chuck, it is equipped with the enhancement baffle to lie in the plectrum rear side on striking the support, and it is spacing on the inside wall of shell around the both ends of enhancement baffle are respectively, it transversely with strike support integrated into one piece to strengthen the baffle as the inserts, utilize the enhancement baffle to further strengthen the structural strength who strikes the support, and it is direct spacing on the shell that strikes the brill to strengthen the baffle, the wholeness of striking support and impact drill shell has been strengthened, the axial effort that makes the output main shaft is effectively transmitted to the organism, it damages with shell coupling to have prevented to strike support, the life who strikes the brill has been improved.

Drawings

Fig. 1 is a schematic view showing an assembly state of an impact electric drill main body and an auxiliary handle assembly of an improved dual-purpose easy-to-operate safety impact drill of the present invention;

fig. 2 is a schematic diagram showing a disassembled state of an impact electric drill main body and an auxiliary handle assembly of the improved dual-purpose easy-to-operate safety impact drill of the present invention;

FIG. 3 is a schematic view of the installation of the auxiliary handle assembly of the improved dual-purpose easy-to-operate safety impact drill at different angles on the main body of the impact electric drill;

fig. 4 is a schematic view of the internal structure of the main body of the improved dual-purpose easy-to-operate safety impact drill of the present invention;

fig. 5 is a schematic structural view of an auxiliary handle assembly in the improved dual-purpose easy-to-operate safety impact drill of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a housing; 1-1, fixing a handle; 1-2, heat dissipation holes; 1-3, stopping rotating the boss; 2. a power switch; 3. a button; 4. a reversing toggle button; 5. a speed regulation knob; 6. impacting the toggle; 7. a self-tightening drill chuck; 8. a hoop ring; 8-1, positioning a tooth groove; 9. an auxiliary handle; 10. locking the screw rod; 11. locking the nut; 12. a guide ruler; 13. a guide ruler lock button; 13-1, a spring; 14. a motor assembly; 15. a heat radiation fan; 16. impacting the bracket; 17. the first end face vibrates the ratchet; 18. a gear shaft; 19. a driving gearwheel; 20. the second end surface vibrates the ratchet; 21. a first bearing; 22. a shaft sleeve; 23. a second bearing; 24. reinforcing the baffle plate; 25. a switch; 26. and (4) a capacitor.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ examples ]

Referring to fig. 1 to 5, the improved dual-purpose easy-to-operate safety impact drill of the present embodiment includes an impact electric drill main body and an auxiliary handle assembly, wherein the auxiliary handle assembly is mounted at the front end of the impact electric drill main body for realizing two-hand operation. The working principle of the electric impact drill main body is similar to that of the prior art, the two modes of single drilling and impact drilling can be switched, and the dual purposes of single drilling and impact drilling are realized. In the embodiment, the front end of a shell 1 of an electric impact drill main body is provided with a cylindrical section, and the outer wall of the cylindrical section is provided with a rotation stopping boss 1-3; preferably, the rotation stopping bosses 1-3 are arranged at the positions lower than the cylindrical sections, so that the overall appearance and the function of the electric impact drill main body are not influenced. The auxiliary handle assembly comprises a hoop ring 8, an auxiliary handle 9, a locking screw rod 10, a locking nut 11, a guide ruler 12 and a guide ruler locking button 13, the inner circumference size of the hoop ring 8 is matched with the diameter of the cylindrical section of the electric impact drill main body, the hoop ring 8 can be sleeved on the cylindrical section of the electric impact drill main body, a plurality of positioning tooth grooves 8-1 matched with the rotation stopping bosses 1-3 are uniformly distributed on the inner side wall of the hoop ring 8 along the circumferential direction, the hoop ring 8 can be prevented from rotating and loosening by clamping the positioning tooth grooves 8-1 with the rotation stopping bosses 1-3, and the installation stability of the auxiliary handle assembly is improved; locking nut 11 has been inlayed to 8 open-ended one ends of armful hoop, locking nut 11 is outer hexagon nut, it is by the side direction opening embedding of 8 one ends of armful hoop, 8 open-ended other ends of armful hoop are equipped with the through-hole, locking screw 10 is in an organic whole with auxiliary handle 9 injection moulding as the inserts, and locking screw 10 and the coaxial setting of auxiliary handle 9, locking screw 10 passes behind the through-hole of 8 openings of armful hoop and locking nut 11 threaded connection, be used for tightening up the armful hoop 8, use auxiliary handle 9 as the locking bolt of armful hoop 8, it is fixed to have realized the locking of armful hoop 8 in the impact electric drill main part when installation auxiliary handle 9, locking operation is nimble convenient, the dismouting is swift. Still be equipped with the guide ruler mounting hole with 8 axial parallels of staple bolt ring in one side of staple bolt ring 8, guide ruler 12 slidable mounting is in the guide ruler mounting hole, and guide ruler lock knob 13 is located on embracing hoop ring 8 for unblock or locking guide ruler 12, with guide ruler 12 integration on staple bolt ring 8, the structure is simple more compact, the nimble control of the convenient degree of depth of punching.

As shown in fig. 2 and 5, in this embodiment, positioning tooth grooves 8-1 are respectively and uniformly distributed at positions close to two sides on the inner side wall of the hoop ring 8, so that the hoop ring 8 can be mounted on the main body of the electric impact drill in a forward and reverse direction, that is, two rings of positioning tooth grooves 8-1 are annularly arranged on two sides of the hoop ring 8, the forward and reverse mounting of the hoop ring 8 can be matched with the rotation stopping bosses 1-3, the mounting position of the auxiliary handle 9 can be changed according to the use habits of different operators, different habits of user operation are met, and the operation flexibility and the safety of the electric impact drill are improved. As shown in fig. 5, in the present embodiment, the installation cavity of the guide lock knob 13 on the hoop ring 8 is perpendicular to the guide installation hole, the guide lock knob 13 is installed in the installation cavity, and the guide lock knob 13 is sequentially provided with an unlocking position and a locking position along the pressing direction of the guide lock knob 13, the locking position is provided with a latch that is matched with the positioning tooth provided on the outer wall of the guide 12, and a spring 13-1 for pressing and resetting the guide lock knob 13 to switch the unlocking position and the locking position is further provided between the guide lock knob 13 and the installation cavity. When the guide ruler lock button 13 is pressed down, the guide ruler lock button 13 slides towards the inner side of the installation cavity, and at the moment, the unlocking position on the guide ruler lock button 13 is matched with the guide ruler 12, so that the guide ruler 12 is unlocked, and the front and back positions of the guide ruler 12 can be adjusted; when the guide lock button 13 is released, the guide lock button 13 is ejected outward under the action of the spring 13-1, so that the latch at the lock position is engaged with the positioning teeth on the guide 12, thereby locking the position of the guide 12. The guide ruler lock button 13 is used for locking or unlocking the guide ruler 12, and the operation is simple and convenient. In addition, in order to improve the operation comfort of the impact drill, a soft rubber layer is formed on the outer walls of the shell 1 of the impact electric drill main body and the auxiliary handle 9 in a secondary injection molding mode, the operation comfort of the impact electric drill is improved by the aid of the soft rubber layer, and the problem of hand numbness caused by impact vibration is reduced.

As shown in fig. 1, 3 and 4, in the present embodiment, a fixed handle 1-1 is integrally formed on a housing 1 of an electric impact drill main body, so that the housing 1 is a pistol type as a whole, a control circuit is provided in the fixed handle 1-1, the control circuit includes components such as a switch 25, a capacitor 26 and a circuit board, and the specific control circuit is the same as that of the existing electric impact drill, and will not be described in detail herein. The fixed handle 1-1 is provided with a power switch 2, a button 3 and a reversing toggle button 4 which are electrically connected with the control circuit, the power switch 2 is used for controlling the power-on and power-off of the impact electric drill, the misoperation of the impact drill caused by mistaken touch of the button 3 can be prevented, after the power switch 2 is opened, the button 3 can play a role, the button 3 is used for controlling the start and stop of the impact electric drill, and the reversing toggle button 4 is used for switching the steering of the impact drill. In this embodiment, the button 3 is disposed at the front side of the fixed handle 1-1, the power switch 2 is disposed at the rear side of the button 3 and on one side of the fixed handle 1-1, and the reversing toggle button 4 is disposed at the upper portion of the button 3 and is disposed on the fixed handle 1-1 in a left-right penetrating manner, so that the reversing toggle button 4 can be rapidly operated from both sides of the fixed handle 1-1; the upper part of the shell 1 of the electric impact drill main body is also provided with a speed regulation knob 5 electrically connected with the control circuit, and the speed regulation knob 5 preferably adopts a potentiometer for controlling the output rotating speed of the electric impact drill. Through the installation position setting of above-mentioned switch 2, button 3 and switching-over shifting knob 4, made things convenient for the one hand to control the percussion drill, and the switching-over is dialled knob 4 and is adopted and run through the formula design about, and the switching-over operation is convenient nimble more, makes the percussion drill easier to operate.

As shown in fig. 4, in the improved dual-purpose easy-to-operate safety impact drill of the present embodiment, a motor assembly 14, a cooling fan 15, an impact bracket 16, a gear shaft 18, a transmission large gear 19, an output main shaft and a self-tightening drill chuck 7 are further disposed in a housing 1 of an impact electric drill main body, the impact bracket 16 is fixedly mounted in the housing 1, front and rear ends of a rotor shaft of the motor assembly 14 are respectively rotatably mounted in the housing 1 through the impact bracket 16 and a second bearing 23, the motor assembly 14 adopts a brush motor structure, and has the advantages of fast start, timely braking, capability of smooth speed regulation in a large range, relatively simple control circuit and the like; the heat radiation fan 15 is connected with the front end of the rotor shaft of the motor assembly 14 by a spline, the shell 1 is provided with heat radiation holes 1-2 corresponding to the position of the heat radiation fan 15, and when the impact drill works, the motor assembly 14 is utilized to synchronously drive the heat radiation fan 15 to work so as to radiate heat for the impact drill; a gear shaft 18 is arranged at the front end of a rotor shaft of the motor assembly 14, a first end face vibration ratchet 17 is fixedly arranged at the upper part of an impact support 16, the rear end of an output main shaft is rotatably supported in a central hole of the first end face vibration ratchet 17, the front end of the output main shaft is supported in the shell 1 through a first bearing 21, a transmission large gear 19 is arranged on the output main shaft, the transmission large gear 19 is meshed with the gear shaft 18, the gear shaft 18 and the transmission large gear 19 are both helical gears, a second end face vibration ratchet 20 matched with the first end face vibration ratchet 17 is further arranged on the rear end face of the transmission large gear 19, the rear end of the output main shaft is arc-shaped, a poking sheet capable of abutting against the rear end of the output main shaft to separate the first end face vibration ratchet 17 from the second end face vibration ratchet 20 is further arranged at the upper part of the impact support 16, an impact poking button 6 connected with the upper end of the poking sheet is arranged at the upper part of the shell 1, the impact toggle button 6 is used for driving a toggle piece to move so as to realize the switching between a single drilling mode and an impact drilling mode, under the single drilling mode, the impact toggle button 6 drives the toggle piece to be blocked at the rear end of the output main shaft, at the moment, the output main shaft moves forwards so as to separate a second end face vibration ratchet 20 on the transmission large gear 19 from a first end face vibration ratchet 17 on the impact support 16, the motor assembly 14 drives the transmission large gear 19 to rotate through a gear shaft 18 so as to drive the output main shaft to rotate, a shaft sleeve 22 is further arranged at the front ends of the output main shaft and the shell 1, and the self-tightening drill chuck 7 is arranged at the front end of the output main shaft so as to drive the self-tightening drill chuck 7 to rotate; in the 'impact drilling' mode, the impact toggle button 6 drives the toggle piece to be separated from the rear end of the output main shaft, the output main shaft can move backwards at the moment, when the 'impact drilling' mode is used, the output main shaft is stressed to move backwards, so that the second end face vibration ratchet 20 on the transmission large gear 19 is meshed with the first end face vibration ratchet 17 on the impact support 16, and under the action of the first end face vibration ratchet 17 of the second end face vibration ratchet 20, the output main shaft rotates and simultaneously performs axial front-back vibration action, so that the 'impact drilling' mode is realized. In both the single drill mode and the percussion drill mode, the axial pressure of the output main shaft acts on the impact support 16, and the impact support 16 also acts as a bearing for mounting the front end of the rotor shaft of the motor assembly 14 and serves as a bearing seat, so that the requirement on the strength of the impact support 16 is high. In order to improve the structural strength of the impact support 16, in this embodiment, a reinforcing baffle 24 is further arranged on the impact support 16 at the rear side of the plectrum, the reinforcing baffle 24 is transversely formed with the impact support 16 as an insert, two ends of the reinforcing baffle 24 are respectively limited on the inner side wall of the housing 1 in the front and back directions, the reinforcing baffle 24 is preferably made of a steel plate, the reinforcing baffle 24 is used for supporting the rear end part of the output main shaft, the structural strength of the impact support 16 is further strengthened by the reinforcing baffle 24, the reinforcing baffle 24 is directly limited on the housing 1 of the impact drill, the integrity of the impact support 16 and the housing of the impact drill is enhanced, the axial acting force of the output main shaft is effectively transmitted to the machine body, the damage of the connection part of the impact support 16 and the housing 1 is prevented, and the service life of the impact drill is prolonged.

The utility model discloses an improved generation dual purpose easy operation safety impact drill sets up the boss that splines on the shell front end cylinder section of impact electric drill main part, evenly distributes along circumference on the intra-annular lateral wall of staple bolt of auxiliary handle subassembly and has a plurality of location tooth's socket that cooperatees with above-mentioned boss that splines, makes the auxiliary handle subassembly difficult to rotate after the installation, has improved the installation fastness of auxiliary handle subassembly, and can carry out the nimble location setting to the installation angle of auxiliary handle subassembly, convenient impact drill's nimble operation; in addition, a locking nut is embedded at one end of the opening of the hoop ring, a locking screw is integrally formed at the upper end of the auxiliary handle in an injection molding mode, the auxiliary handle is used as a locking bolt of the hoop ring, the hoop ring is locked and fixed on the main body of the electric impact drill while the auxiliary handle is installed, the locking operation is flexible and convenient, and the disassembly and the assembly are rapid; meanwhile, the guide ruler is integrated on the hoop ring, so that the structure is simpler and more compact, and the flexible control of the punching depth is facilitated. Lie in the plectrum rear side on strikeing the support and be equipped with the enhancement baffle, and the both ends of strengthening the baffle are spacing around respectively on the inside wall of shell, strengthen the baffle as the inserts horizontal with strike support integrated into one piece, the structural strength who strikes the support has further been reinforceed to the utilization enhancement baffle, and it is direct spacing on the shell that strikes the brill to strengthen the baffle, the wholeness that strikes support and impact and bore the shell has been strengthened, the axial effort that makes the output main shaft is effectively transmitted to the organism, the damage of support and shell coupling part has been prevented to strike, the life who strikes the brill has been improved.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims (7)

1. The utility model provides an easy safe impact of operation of improved generation dual purpose bores, includes impact electric drill main part and auxiliary handle subassembly, its characterized in that:

the front end of a shell (1) of the electric impact drill main body is provided with a cylindrical section, and the outer wall of the cylindrical section is provided with a rotation stopping boss (1-3);

the auxiliary handle assembly comprises a hoop ring (8), an auxiliary handle (9), a locking screw rod (10), a locking nut (11), a guide ruler (12) and a guide ruler locking button (13), the inner peripheral size of the hoop ring (8) is matched with the diameter of a cylindrical section of the electric impact drill main body, a plurality of positioning tooth grooves (8-1) matched with the rotation stopping bosses (1-3) are uniformly distributed on the inner side wall of the hoop ring (8) along the circumferential direction, the locking nut (11) is embedded at one open end of the hoop ring (8), a through hole is formed in the other open end of the hoop ring, the locking screw rod (10) is used as an insert and is injection-molded with the auxiliary handle (9) into a whole, the locking screw rod (10) and the auxiliary handle (9) are coaxially arranged, and the locking screw rod (10) is in threaded connection with the locking nut (11) after passing through the through hole at the opening of the hoop ring (8), used for tightening the hoop (8); one side of hoop (8) be equipped with hoop (8) axial direction parallel's guide ruler mounting hole, guide ruler (12) slidable mounting in the guide ruler mounting hole, guide ruler lock button (13) locate hoop (8) on for unblock or lock guide ruler (12).

2. An improved dual purpose easy to operate safety hammer drill according to claim 1, wherein: and positioning tooth grooves (8-1) are respectively and uniformly distributed at positions close to two sides on the inner side wall of the hoop (8), so that the hoop (8) can be arranged on the main body of the electric impact drill in the forward and reverse directions.

3. An improved dual purpose easy to operate safety hammer drill according to claim 2, wherein: the installation cavity of guide ruler lock button (13) on staple bolt ring (8) is perpendicular with the guide ruler installation hole, guide ruler lock button (13) install in the installation cavity, and guide ruler lock button (13) are gone up and are equipped with in proper order along the direction of pressing of guide ruler lock button (13) and unlock the position and lock the position, the lock position on be equipped with guide ruler (12) outer wall on the location tooth matched with latch that sets up, guide ruler lock button (13) and installation cavity between still be equipped with and be used for making guide ruler lock button (13) press and reset spring (13-1) that switch in order to realize unlocking the position and lock the position.

4. An improved dual purpose easy to operate safety hammer drill according to claim 3, wherein: and soft rubber layers are formed on the outer walls of the shell (1) of the electric impact drill main body and the auxiliary handle (9) through secondary injection molding.

5. An improved dual purpose easy to operate safety hammer drill according to any one of claims 1 to 4, wherein: the electric impact drill is characterized in that a fixed handle (1-1) is integrally formed on a shell (1) of the electric impact drill main body, a control circuit is arranged in the fixed handle (1-1), a power switch (2), a button (3) and a reversing toggle button (4) which are electrically connected with the control circuit are respectively arranged on the fixed handle (1-1), the button (3) is arranged on the front side of the fixed handle (1-1), the power switch (2) is positioned on the rear side of the button (3) and is arranged on one side face of the fixed handle (1-1), and the reversing toggle button (4) is positioned on the upper portion of the button (3) and is arranged on the fixed handle (1-1) in a left-right penetrating manner; the upper part of the shell (1) of the electric impact drill main body is also provided with a speed regulating knob (5) electrically connected with the control circuit.

6. An improved dual purpose easy to operate safety hammer drill according to claim 5, wherein: the electric impact drill is characterized in that a motor assembly (14), a cooling fan (15), an impact support (16), a gear shaft (18), a transmission large gear (19), an output main shaft and a self-tightening drill chuck (7) are further arranged in a shell (1) of the electric impact drill body, the impact support (16) is fixedly arranged in the shell (1), the front end and the rear end of a rotor shaft of the motor assembly (14) are rotatably arranged in the shell (1) through the impact support (16) and a second bearing (23) respectively, the cooling fan (15) is connected with the front end of the rotor shaft of the motor assembly (14) through splines, cooling holes (1-2) corresponding to the cooling fan (15) are formed in the shell (1), and the gear shaft (18) is arranged at the front end of the rotor shaft of the motor assembly (14); the upper part of the impact support (16) is fixedly provided with a first end face vibration ratchet (17), the rear end of the output main shaft is rotatably supported in a central hole of the first end face vibration ratchet (17), the front end of the output main shaft is supported in the shell (1) through a first bearing (21), the transmission large gear (19) is installed on the output main shaft, the transmission large gear (19) is meshed with the gear shaft (18), the rear end face of the transmission large gear (19) is also provided with a second end face vibration ratchet (20) matched with the first end face vibration ratchet (17), the rear end of the output main shaft is arc-shaped, the upper part of the impact support (16) is also provided with a shifting piece which can be abutted against the rear end of the output main shaft to separate the first end face vibration ratchet (17) from the second end face vibration ratchet (20), the upper part of the shell (1) is provided with an impact shifting button (6) connected with the upper end of the shifting piece, the improved self-tightening drill chuck is characterized in that a reinforcing baffle (24) is arranged on the rear side of the shifting piece on the impact support (16), the reinforcing baffle (24) is transversely integrated with the impact support (16) as an insert, the two ends of the reinforcing baffle (24) are respectively limited on the inner side wall of the shell (1) in the front and back direction, a shaft sleeve (22) is further arranged at the front ends of the output main shaft and the shell (1), and the self-tightening drill chuck (7) is arranged at the front end of the output main shaft.

7. An improved dual purpose easy to operate safety hammer drill according to claim 6, wherein: the gear shaft (18) and the transmission gearwheel (19) are both helical gears.

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