Multifunctional electric hammer

Abstract

The present invention discloses a multifunctional electric hammer, which has a housing, a handle connected to the rear of the housing, an adjustment device installed inside the housing, and a switch installed inside the handle; the switch is provided with a spring fixed to its upper end, the spring is provided with a connecting portion extending toward the housing and a stopper located at the end of the connecting portion and bent downward and forward; the adjustment device has a movable module that slides forward and backward along the output direction of the multifunctional electric hammer; when the multifunctional electric hammer is in impact mode, the movable module abuts against the connecting portion of the spring, and when the switch is pressed, the spring is driven to move in a direction away from the housing, the movable module moves from the connecting portion to the stopper and abuts against the stopper, and the switch is locked. The switch has a locking function in the impact mode, which is conducive to reducing the burden on the operator.

Description

[Technical field]

[0001] The invention relates to the field of electric tools, and in particular to a multifunctional electric hammer with a locking function. [Background Technology]

[0002] Electric tools, such as multifunctional electric hammers, generally have output modes such as impact and rotary impact. The operator selects the output mode by using the function knob set on the housing, and controls the start and stop by operating the switch on the handle. After the switch of a traditional multifunctional electric hammer is pressed to start, the operator needs to keep pressing it to continue working. For operators who work for a long time, the burden on the operator is increased. Therefore, the operator needs a multifunctional electric hammer with a locking function. When the multifunctional electric hammer is in the impact mode, there is no problem of excessive torque causing injury to the operator. However, when the multifunctional electric hammer is in the rotary impact mode, the switch has a locking function, which may cause injury to the operator due to the problem of excessive torque and failure to cut off the power in time. Therefore, the operator needs a multifunctional electric hammer with a locking function in the impact mode.

[0003] Therefore, it is necessary to improve the existing multifunctional electric hammer so that the multifunctional electric hammer has a locking function only in the impact mode. [Summary of the invention]

[0004] In order to solve the above problems, the present invention provides a multifunctional electric hammer with a locking function in an impact mode.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a multifunctional electric hammer 100, comprising a casing 1, a handle 2 connected to the rear of the casing 1, an adjusting device 4 installed inside the casing 1 and a switch 5 installed inside the handle 2; characterized in that: the switch 5 is provided with a spring piece 3 protruding from the upper end, the spring piece 3 is provided with a connecting portion 3a extending toward the side of the casing 1 and a stopper 3b located at the end of the connecting portion 3a and bent downward and then forward, the adjusting device 4 has an active module 6 sliding along the front and rear direction of the multifunctional electric hammer 100, when the multifunctional electric hammer 100 is in the impact mode, the active module 6 abuts against the connecting portion 3a of the spring piece 3, when the switch is pressed, the spring piece 3 is driven to move toward the side away from the casing 1, the active module 6 moves from the connecting portion 3a to the stopper 3b and abuts against the stopper 3b.

[0006] A further improved solution is: the movable module 6 has a sliding seat 11 and a pressing block 8 and a second spring 9 accommodated in the sliding seat 11; one end of the second spring 9 abuts against the inner wall of the sliding seat 11, and the other end is mortgaged on the pressing block 8.

[0007] A further improvement scheme is: the switch 5 has a pivoting fulcrum 5c and a starting pressing portion 5a and a reset pressing portion 5b protruding from the outside of the handle 2. When the starting pressing portion 5a is pressed, the switch 5 pivots clockwise around the fulcrum 5c, and the pressing block 8 on the movable module 6 presses the stop portion 3b of the spring 3.

[0008] A further improved solution is: by pressing the reset pressing portion 5b, the switch 5 pivots counterclockwise around the fulcrum 5c, and the pressing block 8 disengages from the stop portion 3b and presses against the connecting portion 3a.

[0009] A further improvement scheme is: the adjustment device 4 has a mounting base 12 fixed on the casing 1 and a first spring 7 accommodated in the mounting base 12, the movable module 6 is accommodated in the mounting base 12 and slides relative to the mounting base 12, one end of the first spring 7 abuts against the inner wall of the mounting base 12, and the other end abuts against the movable module 6.

[0010] A further improvement is that the multifunctional electric hammer 100 also has a rotation impact mode. When the multifunctional electric hammer 100 switches from the impact mode to the rotation impact mode, the movable module 6 slides forward relative to the mounting seat 12 and moves away from the spring piece 3 .

[0011] A further improvement is that the adjustment device 4 has a function knob 13 installed on the housing 1, and the function knob 13 drives the movable module 6 to slide along the front-back direction, thereby realizing the switching of the multifunctional electric hammer 100 between the impact mode and the rotation impact mode.

[0012] A further improved solution is: the sliding seat 11 is provided with sliding rails 11a on both sides thereof, and the pressing block 8 has a protrusion 8c that is slidably matched with the sliding rails 11a.

[0013] A further improvement scheme is: a shock absorbing mechanism is installed between the handle 2 and the housing 1, and the shock absorbing mechanism has a sleeve 14, a buffer sleeve 15 and an elastic element 10 elastically connecting the handle 2 and the housing 1, the elastic element 10 is installed on the sliding seat 11 and accommodated in the sleeve 14, and the buffer sleeve 15 is sleeved on the sleeve 14.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the adjustment device 4 and the switch 5 of the multifunctional electric hammer are respectively installed in the casing 1 and the handle 2, the switch 5 is provided with a spring piece 3 fixed at its upper end, the spring piece 3 is provided with a connecting portion 3a extending toward the casing 1 and a stop portion 3b located at the end of the connecting portion 3a and bent downward and then forward, the adjustment device 4 has an active module 6 that slides back and forth along the output direction of the multifunctional electric hammer 100, and when the multifunctional electric hammer 100 is in the impact mode, the active module 6 abuts against the connecting portion 3a of the spring piece 3, when the switch 5 is pressed, the spring piece 3 moves toward the rear end of the multifunctional electric hammer 100, the active module 6 moves from the connecting portion 3a to the stop portion 3b and abuts against the stop portion 3b, the switch 5 remains in a locked state, and the switch has a locking function in the impact mode, which is beneficial to reduce the burden on the operator. [Drawings]

[0015] Figure 1 It is a cross-sectional view of the multifunctional electric hammer of the present invention;

[0016] Figure 2 It is a partial exploded view of the multifunctional electric hammer of the present invention;

[0017] Figure 3 is a partial exploded view of the regulating device of the present invention;

[0018] Figure 4 It is an exploded view of the activity module in the present invention;

[0019] Figure 5 It is a partial cross-sectional view of the multifunctional electric hammer of the present invention when it is in impact mode and the switch is not pressed;

[0020] Figure 6 It is a partial cross-sectional view of the multifunctional electric hammer in the present invention when it is in impact mode and after the switch is pressed;

[0021] Figure 7 It is a partial cross-sectional view of the multifunctional electric hammer in the present invention when it is in the impact mode and during the process of pressing the switch;

[0022] Figure 8 It is a partial cross-sectional view of the multifunctional electric hammer of the present invention when it is in the rotary impact mode and the switch is not pressed;

[0023] Fig. 9 It is a partial cross-sectional view of the multifunctional electric hammer in the present invention when it is in the rotary impact mode and after the switch is pressed;

[0024] Among them, the multifunctional electric hammer 100, the casing 1, the handle 2, the spring 3, the connecting part 3a, the stop part 3b, the adjusting device 4, the switch 5, the starting pressing part 5a, the resetting pressing part 5b, the fulcrum 5c, the movable module 6, the first spring 7, the pressure block 8, the mortgage seat 8a, the roller 8b, the protrusion 8c, the positioning column 8d, the second spring 9, the elastic element 10, the sliding seat 11, the slide rail 11a, the mounting seat 12, the shock absorbing column 12a, the function knob 13, the eccentric part 13a, the sleeve 14, and the buffer sleeve 15. [Specific implementation method]

[0025] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and examples.

[0026] Please refer to Figure 1 and Figure 2 As shown, the multifunctional electric hammer 100 of the present invention has an impact mode and a rotary impact mode. The multifunctional electric hammer 100 comprises a casing 1, a handle 2, an adjustment device 4 installed inside the casing 1 and a switch 5 installed inside the handle 2, which are separately connected along the front-to-back direction (the front end is defined as the output direction of the multifunctional electric hammer); the casing 1 and the handle 2 are connected through a shock absorbing mechanism, and the operator controls the mode switching of the multifunctional electric hammer 100 by operating the adjustment device 4, and controls the start and stop of the multifunctional electric hammer 100 by pressing the switch 5.

[0027] Please refer to Figure 2 and Figure 7 As shown, the switch 5 is provided with a spring piece 3 protruding from the upper end and extending to the side of the housing 1. The spring piece 3 is provided with a connecting portion 3a extending toward the housing 1 and a stopper portion 3b located at the end of the connecting portion 3a and bent downward and forward. The switch 5 has a pivoting fulcrum 5c, a starting pressing portion 5a and a reset pressing portion 5b protruding from the outside of the handle 2. When the starting pressing portion 5a is pressed, the switch pivots clockwise with the fulcrum 5c as the center, and the multifunctional electric hammer starts to work. The switch 5 has a locking function in the impact mode. After the operator presses the switch, the switch 5 automatically remains in the pressed state, and the multifunctional electric hammer 100 continues to work. When the switch 5 is locked, the reset pressing portion 5b is pressed to reset the switch, and the multifunctional electric hammer 100 stops working.

[0028] Please refer to Figures 2 to 5As shown, the adjustment device 4 has an active module 6 that slides along the front-rear direction of the multifunctional electric hammer 100, and the active module 6 has a sliding seat 11 and a pressure block 8 and a second spring 9 accommodated in the sliding seat 11; the sliding seat 11 is provided with slide rails 11a on both sides thereof, and the pressure block 8 has a mortgage seat 8a and a roller 8b installed at the end of the mortgage seat 8a, and the mortgage seat 8a has a protruding positioning column 8d and a protrusion 8c that slides with the slide rail 11a. One end of the second spring 9 abuts against the inner wall of the sliding seat 11, and the other end abuts against the positioning column 8d of the pressure block 8. The second spring 9 pre-presses the pressure block 8 against the rear end of the slide rail 11a. When the roller 8b is subjected to pressure, the pressure block 8 can compress the second spring 9 and slide toward the front end relative to the sliding seat 11.

[0029] The adjustment device 4 has a mounting seat 12 fixed on the housing 1 and a first spring 7 accommodated in the mounting seat 12. The movable module 6 is accommodated in the mounting seat 12 and slides relative to the mounting seat 12. One end of the first spring 7 abuts against the inner wall of the mounting seat 12, and the other end abuts against the movable module 6. The shock absorbing mechanism of the multifunctional electric hammer 100 has a sleeve 14, a buffer sleeve 15 and an elastic element 10. The mounting seat 12 is provided with a pair of shock absorbing columns 12a extending toward the inside of the handle 2. The elastic element 10 is sleeved on the shock absorbing columns 12a and accommodated in the sleeve 14. The buffer sleeve 15 is sleeved on the sleeve 14. One end of the elastic element 10 is connected to the mounting seat 12 and the other end is connected to the handle 2. When the multifunctional electric hammer is working, the elastic element 10 realizes the shock absorbing function.

[0030] The adjusting device 4 has a function knob 13 installed on the housing 1. The function knob 13 pivotally drives the gear (not shown) inside the multifunctional electric hammer 100 to engage or disengage, and at the same time pivotally drives the movable module 6 to slide back and forth along the output direction, thereby realizing the switching of the multifunctional electric hammer 100 between the impact mode and the rotary impact mode.

[0031] Please refer to Figures 5 to 7 At this time, the multifunctional electric hammer 100 is in the impact mode, and the function knob 13 has an eccentric portion 13 a. When the function knob 13 is rotated to the impact mode, the eccentric portion 13 a pushes the movable module 6 to move toward the rear end, and the movable module 6 further compresses the first spring 7 .

[0032] Please refer to Figure 5 As shown, when the multifunctional electric hammer 100 is in the impact mode and the switch 5 is not locked, the multifunctional electric hammer is not started, and the pressing block 8 on the movable module 6 abuts against the connecting portion 3a of the spring 3. Figure 7As shown, the start-up pressing portion 5a begins to be pressed, the switch 5 pivots clockwise around the fulcrum 5c, and the spring 3 begins to move away from the housing 1; when the start-up pressing portion 5a is fully pressed, please refer to Figure 6 As shown, the movable module 6 moves to the stopper 3b and presses against the stopper 3b. At this time, the pressing block 8 is pushed by the second spring 9 and is located at the rear end of the sliding seat 11. The switch 5 is in a locked state.

[0033] When the multifunctional electric hammer 100 needs to stop from maintaining the start state, the reset pressing part 5b is pressed to reset the switch 5. In the process of pressing the reset pressing part 5b, the switch 5 pivots counterclockwise with the fulcrum 5c as the center, and the sliding seat 11 is stationary relative to the housing 1. The spring piece 3 drives the pressing block 8 to slide forward relative to the sliding seat 11 to overcome the pressure of the second spring 9, which can prevent the spring piece 3 from pressing against the pressing block 8 and being unable to move. Then the pressing block 8 is separated from the stopper 3b, and the second spring 9 presses the pressing block 8 to reset to the rear end of the sliding seat 11, and the pressing block 8 moves to the connecting part 3a.

[0034] Please refer to Figures 8 to 9 As shown, at this time, the multifunctional electric hammer 100 is in the rotary impact mode, the eccentric portion 13a of the function knob 13 is away from the movable module 6, and the first spring 7 drives the movable module 6 to move toward the front end through the pressing force, and the movable module 6 is away from the spring 3. Figure 8 As shown, at this time, the switch 5 is not pressed, and the multifunctional electric hammer stops working. Fig. 9 As shown, by pressing the switch 5, the multifunctional electric hammer starts to rotate and impact. When the operator releases the switch 5, the switch 5 is automatically reset because the spring 3 is no longer in contact with the movable module 6.

[0035] Compared with the prior art, the present invention has the following beneficial effects: the adjustment device 4 and the switch 5 of the multifunctional electric hammer are respectively installed in the casing 1 and the handle 2, the switch 5 is provided with a spring piece 3 fixed at its upper end, the spring piece 3 is provided with a connecting portion 3a extending toward the casing 1 and a stop portion 3b located at the end of the connecting portion 3a and bent downward and then forward, the adjustment device 4 has an active module 6 that slides back and forth along the output direction of the multifunctional electric hammer 100, and when the multifunctional electric hammer 100 is in the impact mode, the active module 6 abuts against the connecting portion 3a of the spring piece 3, when the switch 5 is pressed, the spring piece 3 moves toward the rear end of the multifunctional electric hammer 100, the active module 6 moves from the connecting portion 3a to the stop portion 3b and abuts against the stop portion 3b, the switch 5 remains in a locked state, and the switch has a locking function in the impact mode, which is beneficial to reduce the burden on the operator.

Claims

1. A multifunctional electric hammer, comprising a housing, a handle connected to the rear of the housing, an adjustment device installed inside the housing, and a switch installed inside the handle; characterized in that: The switch is provided with a spring sheet protruding from the upper end, the spring sheet is provided with a connecting portion extending toward the side of the casing and a stop portion located at the end of the connecting portion and bent downward and then forward, the adjustment device has a movable module sliding along the front and rear direction of the multifunctional electric hammer, when the multifunctional electric hammer is in the impact mode, the movable module abuts against the connecting portion of the spring sheet, when the switch is pressed, the spring sheet is driven to move toward the side away from the casing, the movable module moves from the connecting portion to the stop portion and abuts against the stop portion; The movable module comprises a sliding seat, a pressing block and a second spring contained in the sliding seat; one end of the second spring is in contact with the inner wall of the sliding seat, and the other end is secured on the pressing block.

2. The multifunctional electric hammer according to claim 1, characterized in that: The switch has a pivoting fulcrum, a starting pressing portion and a resetting pressing portion protruding from the outside of the handle. When the starting pressing portion is pressed, the switch pivots clockwise around the fulcrum, and the pressing block on the movable module presses the stop portion of the spring.

3. The multifunctional electric hammer according to claim 2, characterized in that: By pressing the reset pressing portion, the switch pivots counterclockwise around the fulcrum, and the pressing block is separated from the stop portion and pressed against the connecting portion.

4. The multifunctional electric hammer according to claim 3, characterized in that: The adjusting device has a mounting base fixed on the casing and a first spring accommodated in the mounting base. The movable module is accommodated in the mounting base and slides relative to the mounting base. One end of the first spring abuts against the inner wall of the mounting base, and the other end abuts against the movable module.

5. The multifunctional electric hammer according to claim 4, characterized in that: The multifunctional electric hammer also has a rotary impact mode. When the multifunctional electric hammer is switched from the impact mode to the rotary impact mode, the movable module slides forward relative to the mounting seat and moves away from the spring sheet.

6. The multifunctional electric hammer according to claim 5, characterized in that: The adjusting device has a function knob installed on the casing, and the function knob drives the movable module to slide along the front-back direction, thereby realizing the switching of the multifunctional electric hammer between the impact mode and the rotation impact mode.

7. The multifunctional electric hammer according to claim 1 or 6, characterized in that: The sliding seat is provided with sliding rails on both sides thereof, and the pressing block is provided with protrusions which are slidably matched with the sliding rails.

8. The multifunctional electric hammer according to claim 7, characterized in that: A shock absorbing mechanism is installed between the handle and the housing. The shock absorbing mechanism has a sleeve, a buffer sleeve and an elastic element elastically connecting the handle and the housing. The elastic element is installed on the sliding seat and accommodated in the sleeve. The buffer sleeve is sleeved on the sleeve.

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