CN211073475U - Electric hammer protector that security performance is good - Google Patents

Abstract

The utility model discloses an electric hammer protector that security performance is good, including shell, shift knob and motor, shift knob is installed to the right side bottom of shell, the motor is installed on the inside right side of shell, the welding has first pivot on the rotation output shaft of motor, the left side of first pivot is fixed with the rolling disc, the outside cover of rolling disc is equipped with the separation spring, the left side welding of separation spring has the support ring, the internally mounted of support ring has the ball. The utility model discloses a set up driving disk and rolling disc between second pivot and first pivot, and the driving disk passes through the separation spring to be supported, when external force does not exert, driving disk and rolling disc separate under the effect of separation spring, and the drill bit does not rotate along with the motor for the electric hammer is taking off hand back motor idle running and the drill bit can not rotate, has improved the device's security performance greatly, prevents that the electric hammer from taking off hand back drill bit from continuing to rotate and causing bodily injury and loss of property.

Description

Electric hammer protector that security performance is good

Technical Field

The utility model relates to an electric hammer equipment technical field specifically is an electric hammer protector that security performance is good.

Background

The electric hammer is an electrodynamic type rotary hammer with a pneumatic hammering mechanism, the electric hammer utilizes the principle of piston motion, compressed gas strikes the drill bit, make the drill bit both can rotate at the during operation, also can reciprocating impact motion, make the electric hammer can punch on materials such as cement concrete and stone material that the fragility is big fast, and the electric hammer can produce violent vibrations at the during operation, if the staff grips unstable very easily and leads to the electric hammer to take off the hand and drop, the electric hammer continues to rotate when the electric hammer drops, pivoted drill bit causes the injury to material and constructor very easily, and present electric hammer protective structure is not enough, when the electric hammer drops, lead to the electric hammer to receive the impact damage very easily, therefore, for solving above problem, provide one kind and have the buffering and prevent falling the structure and take off the electric hammer protector that the security performance that the back drill bit automatic stall of taking off the hand is good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric hammer protector that security performance is good to solve present electric hammer that above-mentioned background art provided and preventing falling protection architecture and lacking to some extent, strike the ground and damage easily after the electric hammer takes off the hand, and the drill bit after taking off the hand continues to rotate the problem that easily causes the injury to material and constructor.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electric hammer protector that security performance is good, includes shell, shift knob and motor, shift knob is installed to the right side bottom of shell, the motor is installed on the inside right side of shell, the welding has first pivot on the rotation output shaft of motor, the left side of first pivot is fixed with the rolling disc, the outside cover of rolling disc is equipped with the separation spring, the left side welding of separation spring has the support ring, the internally mounted of support ring has the ball, the transmission disc has been installed to the below of ball, the left side of transmission disc is fixed with the second pivot, the drill bit is installed in the left side of second pivot, the left end welding of shell has the protection casing, the cover is equipped with first spiro on the left side outer wall of shell, evenly install four groups sleeve through the axis of rotation on the left side outer wall of shell, four groups the telescopic outside cover is equipped with the second spiro, a sleeve rod is inserted into the right end of one group of sleeves in an inserting mode, a buffer spring is sleeved on the outer side of the sleeve rod, and a supporting seat is welded at the right end of the sleeve rod.

Preferably, tooth has been seted up on the right side of driving disc, tooth has been seted up on the left side of rolling disc, the size of tooth is the same with the size of tooth on the rolling disc on the driving disc, and tooth on the driving disc meshes with the tooth on the rolling disc mutually after the driving disc slides right.

Preferably, the outer side of the transmission disc is provided with a sliding groove, the inside of the support ring is provided with a sliding groove, and the balls are uniformly arranged in the sliding grooves formed in the transmission disc and the support ring.

Preferably, the outer wall of the left side of the outer shell is provided with threads, the first spiral ring is internally provided with threads, and the first spiral ring and the outer shell are designed into a rotating structure through the threads.

Preferably, the sleeve is designed into a rotating structure through a rotating shaft and the shell, a through groove is formed below the sleeve, the outer side size of the loop bar is the same as the inner side size of the sleeve, and the loop bar and the sleeve are designed into a sliding structure.

Preferably, the outer wall of the sleeve is provided with threads, the left side of the shell is provided with threads, the inner wall of the second spiral ring is provided with threads, the second spiral ring, the shell and the sleeve are designed into a rotating structure through the threads, and the second spiral ring can freely rotate and move on the left end of the shell and the sleeve.

Compared with the prior art, the beneficial effects of the utility model are that: according to the electric hammer protection device with good safety performance, the transmission disc and the rotating disc are arranged between the second rotating shaft and the first rotating shaft, and the transmission disc is supported by the separation spring, when external force is not applied, the transmission disc and the rotating disc are separated under the action of the separation spring, and the drill bit does not rotate along with the motor, so that the motor idles after the electric hammer is taken off the hand, and the drill bit cannot rotate, the safety performance of the device is greatly improved, and personal injury and property loss caused by continuous rotation of the drill bit after the electric hammer is taken off the hand are prevented;

the sleeve and the loop bar are arranged on the outer side of the shell, and the sleeve and the loop bar are supported through the buffer spring, so that when the electric hammer is used, the sleeve and the loop bar are unfolded, and when the electric hammer falls to the ground even if the electric hammer is out of hand, the buffer spring can elastically deform to absorb and weaken the impact force, thereby effectively protecting the electric drill from being damaged by impact;

install in the left side of shell through being provided with the protection casing, at the electric hammer during operation, the protection casing can be effectual will punch the stone bits separation that splashes that the operation brought out and in the inside of protection casing, prevent that the stone bits from splashing and accidentally injure the constructor, simultaneously, the inside spring of protection casing is received pressure and can be contracted for the protection casing is folding, does not influence the drill bit when preventing that the stone bits from splashing yet and punches to the material.

Drawings

FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;

FIG. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is a schematic top view of the structure of the present invention;

fig. 4 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

In the figure: 1. a housing; 2. a switch button; 3. a motor; 4. a first rotating shaft; 5. rotating the disc; 6. a separation spring; 7. a support ring; 8. a ball bearing; 9. a drive plate; 10. a second rotating shaft; 11. a drill bit; 12. a protective cover; 13. a first spiro ring; 14. a sleeve; 15. a second spiro ring; 16. a loop bar; 17. a buffer spring; 18. and (4) supporting the base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: an electric hammer protection device with good safety performance comprises a shell 1, a switch button 2 and a motor 3, wherein the switch button 2 is installed at the bottom of the right side of the shell 1, the motor 3 is installed at the right side inside the shell 1, a first rotating shaft 4 is welded on a rotating output shaft of the motor 3, a rotating disc 5 is fixed on the left side of the first rotating shaft 4, a separating spring 6 is sleeved outside the rotating disc 5, a support ring 7 is welded on the left side of the separating spring 6, balls 8 are installed inside the support ring 7, a sliding groove is formed outside the transmission disc 9, a sliding groove is formed inside the support ring 7, the balls 8 are uniformly installed in the sliding grooves formed in the transmission disc 9 and the support ring 7, the balls 8 are installed between the support ring 7 and the transmission disc 9, the transmission disc 9 can freely rotate inside the support ring 7 through the balls 8, when the transmission disc 9 and the rotating disc 5 are in contact rotation, the support ring 7, the transmission disc 9 is prevented from driving the support ring 7 to rotate when rotating so as to prevent the electric hammer from normally working, and the model of the motor 3 is GBH 2-18E.

The transmission disc 9 is arranged below the ball 8, the right side of the transmission disc 9 is provided with teeth, the left side of the rotating disc 5 is provided with teeth, the size of the teeth on the transmission disc 9 is the same as that of the teeth on the rotating disc 5, when the transmission disc 9 slides rightwards, the teeth on the transmission disc 9 are meshed with the teeth on the rotating disc 5, when the electric hammer works, a constructor presses the shell 1 leftwards, the corresponding transmission disc 9 moves rightwards due to the fact that the drill bit 11 is pressed against the surface of a material to be constructed and is contacted with the rotating disc 5, under the meshing of the teeth, the rotating disc 5 drives the transmission disc 9 to rotate, the electric hammer works to punch holes, after the electric hammer is released, under the pressing without external force, the elastic action of the separating spring 6, the transmission disc 9 is separated from the rotating disc 5, so that the transmission on the rotating disc 5 is finally broken, at the moment, the drill bit 11 cannot rotate, and the drill bit 11 is effectively prevented from continuing, the damage to materials and constructors is caused, and the safety of the device is improved.

A second rotating shaft 10 is fixed on the left side of the transmission disc 9, a drill bit 11 is installed on the left side of the second rotating shaft 10, a protective cover 12 is welded at the left end of the shell 1, the protective cover 12 can effectively block stone chips jumped by the drill bit 11 during operation, and the constructors are prevented from being injured by the stone chips in a sputtering mode, a small spring is installed inside the protective cover 12, the protective cover 12 can be contracted after being extruded due to the fact that the small spring has elastic deformation characteristics, on the basis of preventing the stone chips from flying, the normal operation of the drill bit 11 cannot be influenced, a first spiral ring 13 is sleeved on the outer wall of the left side of the shell 1, four groups of sleeves 14 are uniformly installed on the outer wall of the left side of the shell 1 through rotating shafts, a second spiral ring 15 is sleeved on the outer wall of the four groups of sleeves 14, threads are formed on the outer wall of the sleeves 14, threads are formed on the left side of the shell 1, the second spiral ring 15 can freely rotate and move on the left end of the shell 1 and the sleeve 14, the second spiral ring 15 moves leftwards to the outer wall of the shell 1 under the engagement of threads by clockwise rotating the second spiral ring 15, the constraint of the second spiral ring 15 is lost at the moment, the sleeve 14 can freely rotate around the rotating shaft, the sleeve 14 is rotated to the vertical state, the first spiral ring 13 is rotated clockwise, and the first spiral ring 13 moves leftwards to be attached to the right side of the sleeve 14 under the engagement of the threads, so that the vertical state of the sleeve 14 is stably maintained.

Wherein the right-hand member of a set of sleeve 14 is pegged graft and is had loop bar 16, the outside cover of loop bar 16 is equipped with buffer spring 17, the right-hand member welding of loop bar 16 has supporting seat 18, sleeve 14 designs into rotating-structure through axis of rotation and shell 1, logical groove has been seted up to the below of sleeve 14, the outside size of loop bar 16 is the same with the inboard size of sleeve 14, loop bar 16 designs into sliding construction with sleeve 14, when the electric hammer takes off the hand and strikes the ground, supporting seat 18 contacts ground, because loop bar 16 can freely slide in sleeve 14's inside, supporting seat 18 extrusion cover is established at the outside buffer spring 17 of loop bar 16, buffer spring 17 receives the extrusion and can take place elastic deformation, weaken the absorption with the impact, the impact that receives when preventing the electric hammer from falling ground is too big and damage, protect the electric hammer effectively, improve the life of electric hammer.

The working principle is as follows: when the device works, the device is connected with an external power supply to provide electric support for the device, and then a constructor can start the device through the switch button 2;

during working, a constructor rotates the second spiral ring 15 clockwise, the second spiral ring 15 is sleeved at the left end of the shell 1 and on the outer side of the sleeve 14, the second spiral ring 15 moves leftwards due to the meshing effect of the threads, the second spiral ring 15 is located on the threads formed at the left end of the shell 1, the sleeve 14 is loosened, the sleeve 14 is connected to the outer side of the shell 1 through the rotating shaft, the sleeve 14 can rotate around the rotating shaft, the sleeve 14 is rotated to enable the sleeve 14 and the shell 1 to be in a vertical state, the first spiral ring 13 is rotated clockwise, and the first spiral ring 13 moves leftwards due to the fact that the threads inside the first spiral ring 13 are meshed with the threads on the shell 1, and the sleeve 14 in the vertical state is clamped and fixed;

during construction, a constructor presses the switch button 2 to enable the motor 3 to be electrified and rotated, a rotating output shaft of the motor 3 drives the first rotating shaft 4 to rotate, the first rotating shaft 4 drives the rotating disc 5 welded at the left end of the first rotating shaft to rotate, the constructor aligns the drill bit 11 at a position of a material to be drilled and presses the position to the left, under the action of pressing and holding, the shell 1 moves leftwards relative to the drill bit 11, at the moment, the transmission disc 9 in the shell 1 is contacted with the rotating disc 5, under the meshing action of the teeth on the rotating disc 5 and the transmission disc 9, the transmission disc 9 rotates along with the rotating disc 5 to drive the second rotating shaft 10 to rotate, thereby rotating the drill bit 11, which is installed at the left side of the second rotating shaft 10, performing a drilling operation, because the protection cover 12 is arranged at the left end of the shell 1, stone chips brought out by the rotation of the drill bit 11 are blocked in the protection cover 12, and the stone chips are prevented from flying to hurt constructors;

when the electric hammer is carelessly dropped, because the pressure of a constructor to the left of the electric hammer disappears, under the elastic action of the separation spring 6, the rotating disc 5 is separated from the transmission disc 9, at the moment, the motor 3 is electrified and rotated and can not be transmitted to the drill bit 11, the drill bit 11 can not be rotated, the damage to materials and the constructor caused by the rotation of the drill bit 11 after the electric hammer is dropped is prevented, the safety performance of the device is greatly improved, when the electric hammer impacts the ground, the sleeve rod 16 is inserted into the sleeve 14, the sleeve rod 16 slides in the sleeve 14 after being impacted, the buffer spring 17 is extruded to generate elastic deformation, the impact force is weakened, the damage caused by the overlarge impact force on the electric hammer is prevented, and the safety of the impact electric hammer is protected.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides an electric hammer protector that security performance is good, includes shell (1), shift knob (2) and motor (3), its characterized in that: switch button (2) is installed to the right side bottom of shell (1), motor (3) are installed on the inside right side of shell (1), the welding has first pivot (4) on the rotation output shaft of motor (3), the left side of first pivot (4) is fixed with rolling disc (5), the outside cover of rolling disc (5) is equipped with separation spring (6), the left side welding of separation spring (6) has support ring (7), the internally mounted of support ring (7) has ball (8), driving disc (9) have been installed to the below of ball (8), the left side of driving disc (9) is fixed with second pivot (10), drill bit (11) are installed in the left side of second pivot (10), the left end welding of shell (1) has protection casing (12), the cover is equipped with first spiro (13) on the left side outer wall of shell (1), four groups of sleeves (14) are uniformly installed on the outer wall of the left side of the shell (1) through rotating shafts, the outer side of each sleeve (14) is sleeved with a second spiral ring (15), a sleeve rod (16) is inserted into the right end of each sleeve (14), a buffer spring (17) is sleeved on the outer side of each sleeve rod (16), and a supporting seat (18) is welded at the right end of each sleeve rod (16).

2. The electric hammer protection device with good safety performance as claimed in claim 1, wherein: tooth has been seted up on the right side of driving plate (9), tooth has been seted up on the left side of rolling disc (5), the size of tooth is the same with the size of tooth on rolling disc (5) on driving plate (9), and tooth mesh on tooth and the rolling disc (5) after driving plate (9) slided right on driving plate (9).

3. The electric hammer protection device with good safety performance as claimed in claim 1, wherein: the outside of transmission dish (9) has seted up the spout, the spout has been seted up to the inside of support ring (7), ball (8) are evenly installed in the spout of seting up on transmission dish (9) and support ring (7).

4. The electric hammer protection device with good safety performance as claimed in claim 1, wherein: the screw thread is arranged on the outer wall of the left side of the shell (1), the screw thread is arranged inside the first spiral ring (13), and the first spiral ring (13) and the shell (1) are designed to be of a rotating structure through the screw thread.

5. The electric hammer protection device with good safety performance as claimed in claim 1, wherein: the sleeve (14) is designed into a rotating structure through the rotating shaft and the shell (1), a through groove is formed in the lower portion of the sleeve (14), the outer side size of the loop bar (16) is the same as the inner side size of the sleeve (14), and the loop bar (16) and the sleeve (14) are designed into a sliding structure.

6. The electric hammer protection device with good safety performance as claimed in claim 1, wherein: the outer wall of the sleeve (14) is provided with threads, the left side of the shell (1) is provided with threads, the inner wall of the second spiral ring (15) is provided with threads, the second spiral ring (15), the shell (1) and the sleeve (14) are designed into a rotating structure through the threads, and the second spiral ring (15) can freely rotate and move on the left end of the shell (1) and the sleeve (14).

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