Electric hammer locking control device with function identification function

Abstract

The utility model discloses an electric hammer locking control device with function identification, which comprises a casing, a control switch, a gear shift knob, an identification switch, an emergency stop switch, a controller and a self-locking mechanism are arranged on the casing, the gear shift knob rotates between a hammer gear position and other gear positions, a first trigger part is arranged on the gear shift knob, and a second trigger part is arranged on the self-locking mechanism. When the gear shifting knob rotates to a hammer gear position, the first trigger part triggers the identification switch, when the gear shifting knob rotates to other gear positions, the first trigger part and the identification switch are staggered, the self-locking mechanism is connected with a self-locking button, after the self-locking button is pressed, the self-locking mechanism locks the control switch in a trigger state, the self-locking button triggers the emergency stop switch, and the emergency stop switch is started. The first control state, the identification switch and the emergency stop switch are all triggered to be switched on, the controller does not interfere with work of the electric hammer, the second control state, the identification switch is switched off, the emergency stop switch is triggered to be switched on, and the controller controls the electric hammer to stop, so that different function gears of the electric hammer are differentially controlled.

Description

Technical Field

[0001] The utility model relates to a hammer and pick tool, in particular to an electric hammer locking control device with function identification. Background Art

[0002] Electric hammers and electric picks are widely used in construction, road paving and maintenance, home decoration and other operations such as crushing, chiseling, excavation and grooving because they have three functions: hammer drill, single drill and single hammer. Commonly used electric hammers include a power system, the output end of the power system is connected to the transmission mechanism, the transmission mechanism is connected to the tool output end, and the tool output end is used to assemble drill bits, hammer drill bits and other tools. Its working principle is mainly to drive the piston assembly to reciprocate compressed air in the cylinder through the power system and the transmission mechanism, and use the periodic change of air pressure in the cylinder to achieve reciprocating strikes / impacts in the axial direction of the tool. At the same time, the transmission mechanism can also drive the tool to rotate. In order to meet the needs of various work scenarios during use, the working mode of the electric hammer is switched through the operating part connected to the transmission mechanism, including hammering only, hammering and drilling, and drilling only.

[0003] For example, the light single-button four-function electric hammer disclosed in Chinese utility model patent CN2920563Y includes a body, a motor, a rotating sleeve assembly, a cylinder assembly, a torque spring, a large gear and a torque clutch, a transmission mechanism, an operating mechanism, and a knob. The transmission mechanism includes a pinion, a drill gear clutch, an intermediate shaft, a hammer gear clutch, a rocker bearing and a primary gear. The pinion is dynamically matched with the intermediate shaft, the pinion is meshed with the large gear and matched with the internal teeth of the drill gear clutch, the drill gear clutch and the hammer gear clutch are dynamically matched with the gear shaft of the intermediate shaft, the rocker bearing is dynamically matched with the intermediate shaft and is connected to the cylinder assembly through the rocker, the hammer gear clutch and the rocker bearing are provided with matching concave and convex grooves, the primary gear is tightly matched with the intermediate shaft, a semicircular protrusion is provided on the knob, and an elliptical shifting block deviating from the center of the knob is provided on the semicircular protrusion, the elliptical shifting block is arranged between the drill gear shifting piece and the hammer gear shifting piece and the buckling area, the outer edge of the semicircular protrusion is pressed against the positioning plate of the stop plate, and the electric hammer is adjusted by rotating the knob to realize functions such as hammer gear, hammer drill gear or drill gear.

[0004] Existing electric tools can lock the power switch of the electric hammer in the off state or the triggered state through a locking mechanism. When the power switch is locked in the off state, the machine cannot be started, and when the power switch is locked in the triggered state, it remains in the on state. At present, for safety reasons, the electric hammer is not allowed to work after the switch is locked. However, the electric hammer generally has multiple functions. When in the hammer gear, the user desires a locking function so that the switch button does not need to be pressed all the time in the hammer gear. For this purpose, a control device is needed to control the electric hammer so that it is not allowed to work after the switch is locked in the drill gear and the hammer-drill gear, and can work after the switch is locked in the hammer gear. Utility Model Content

[0005] Based on the problem that the electric hammer needs to work after the switch is locked in the hammer function, and is not allowed to work after the electric hammer switch is locked in other functional gears such as the hammer drill gear and the drill gear, the utility model provides an electric hammer locking control device with function identification.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an electric hammer locking control device with function identification, including a casing, a control switch for controlling the start and stop of the electric hammer, and a shift knob with multiple gear positions are provided on the casing, the shift knob is rotated between the hammer gear position and other gear positions to adjust the functional mode of the electric hammer, the control switch includes a switch button for pressing, the switch button is triggered to start after being pressed, and resets after the pressing force is eliminated, the casing is also provided with an identification switch, an emergency stop switch, a controller and a self-locking mechanism, the identification switch and the emergency stop switch are electrically connected to the controller, the identification switch is located around the shift knob, and the shift knob is on A first trigger part is provided to cooperate with the identification switch. When the shift knob is rotated to the hammer position, the first trigger part is opposite to the identification switch and triggers the identification switch, and the identification switch is in the on state. When the shift knob is rotated to other gear positions, the first trigger part is misaligned with the identification switch, and the identification switch is in the off state. A self-locking button for pressing is connected to the self-locking mechanism. After the self-locking button is pressed, the self-locking mechanism locks the switch button in the triggered state. The emergency stop switch is arranged around the self-locking button. A second trigger part cooperating with the emergency stop switch is provided on the self-locking button. When the self-locking button is pressed, the second trigger part triggers the emergency stop switch, and the emergency stop switch is in the on state.

[0007] In the first control state, the identification switch and the emergency stop switch are both triggered and turned on, and the controller does not interfere with the operation of the electric hammer.

[0008] In the second control state, the identification switch is disconnected and the emergency stop switch is triggered and turned on, and the controller controls the electric hammer to stop.

[0009] A further preferred technical solution of the utility model is as follows: the self-locking mechanism includes a shifting member, a connecting seat fixed on the casing and having multiple gear positions, a position conversion member and an elastic reset member cooperating with the shifting member, a first inclined guide portion is provided between adjacent gear positions on the connecting seat, a self-locking pin is connected to the position conversion member, and the elastic reset member has an elastic force that pushes the self-locking pin and the position conversion member to move and reset, the self-locking button is connected to the shifting member, when the self-locking button is pressed by external force, the shifting member pushes down the position conversion member and drives the position conversion member to rotate, the position conversion member enters different gear positions along the first inclined guide portion, so that the self-locking pin moves up and down and switches between the locking position and the unlocking position, the switch button is provided with a limiting hole cooperating with the self-locking pin, in the first self-locking state, the self-locking pin moves and switches to the locking position, and the switch button is pressed, and the self-locking pin is inserted into the limiting hole on the switch button to limit the reset of the switch button.

[0010] A further preferred technical solution of the utility model is: in the second self-locking state, the self-locking pin moves and switches to the locking position, and the switch button is not pressed, and the self-locking pin blocks the pressing stroke of the switch button to limit the switch button from being pressed.

[0011] A further preferred technical solution of the utility model is: a knob groove is provided on the casing, the shift knob is placed in the knob groove and rotated, the identification switch has a first receiving portion located at the bottom of the knob groove, the first triggering portion protrudes from the bottom surface of the shift knob opposite to the bottom of the knob groove, when the shift knob is rotated to the hammer position, the first triggering portion is opposite to the first receiving portion, and touches and presses on the first receiving portion to trigger the identification switch, and when the shift knob is rotated to other gear positions, the bottom surface of the shift knob is opposite to the first receiving portion, and the two do not form a touch pressure.

[0012] A further preferred technical solution of the utility model is: the first trigger part is a self-locking button arranged on the shift knob, and the self-locking button can move relative to the shift knob in the radial direction of the shift knob, and a plurality of positioning grooves corresponding to each gear position are provided on the inner groove wall of the knob groove, and the shift knob is provided with a self-locking spring that presses against the self-locking button, and the self-locking spring has an elastic force that pushes the self-locking button to move outward, and the self-locking button is pushed by the self-locking spring to be inserted into the positioning groove to lock the shift knob in the gear position, and the bottom of the self-locking button has a self-locking block for inserting into the positioning groove, and the self-locking block protrudes from the bottom surface of the shift knob to contact and press the first receiving part.

[0013] A further preferred technical solution of the utility model is: the second trigger part is a touch pressure plate fixed on the self-locking button, and the emergency stop switch has a second receiving part extending to the displacement stroke of the touch pressure plate. After the self-locking button is pressed, the touch pressure plate presses on the second receiving part to trigger the emergency stop switch.

[0014] A further preferred technical solution of the utility model is: the gear positions arranged on the connecting seat include a first gear position and a second gear position forming a circle, a second gear position is provided between two adjacent first gear positions, and a first inclined guide portion for guiding the position conversion member is provided between adjacent first gear positions and second gear positions; when the position conversion member enters the first gear position, the self-locking pin moves up to the unlocking position, and when the position conversion member enters the second gear position, the self-locking pin moves down to the locking position.

[0015] A further preferred technical solution of the utility model is: the shift member, position conversion member and self-locking pin are arranged in sequence from top to bottom, a connecting channel is provided in the connecting seat, a plurality of gear protrusions are provided at equal intervals on the inner peripheral side wall of the connecting channel, a vertical slot opening downward is formed between adjacent gear protrusions, the vertical slot is used as the first gear, two guide teeth with a first inclined guide portion are provided on the lower edge of the gear protrusion, the second gear is formed between the two guide teeth, the position conversion member is movably accommodated in the connecting channel, and is clamped in the first gear or the second gear, the position of the first gear for the position conversion member to be clamped and the position of the second gear for the position conversion member to be clamped have a spacing in the direction of the position conversion member moving up and down, one end of the shift member is inserted in the connecting channel for pushing the position conversion member down to shift gears.

[0016] A further preferred technical solution of the utility model is as follows: the slot has an upper bottom, and a limiting protrusion corresponding to each slot is provided on the circumference of the lower end of the shift member, an insertion port is provided on the top of the connecting seat for the lower end of the shift member to be inserted into the connecting channel, the lower end of the shift member is inserted into the connecting channel and the limiting protrusion can be slid up and down and stuck in the corresponding slot, a first slot is provided on the bottom of the shift member for the position conversion member to be inserted, a flange is provided at the lower end of the position conversion member, and a plurality of second inclined guide parts are provided on the upper edge of the flange, a linkage part corresponding to the second inclined guide part is provided on the lower edge of the shift member, and a gear block that is stuck in the first gear or the second gear is provided on the circumferential side wall of the flange, and when the self-locking button is pressed by external force, the shift member contacts the second inclined guide part through the linkage part to push down the position conversion member, and drives the position conversion member to rotate, so that the gear block on the position conversion member enters the next gear from the previous gear along the first inclined guide part.

[0017] A further preferred technical solution of the utility model is: the self-locking pin is accommodated in the connecting channel, the bottom of the position conversion member has a second slot for the upper end of the self-locking pin to be inserted, the upper end of the self-locking pin is inserted in the second slot, the middle part of the self-locking pin is provided with an outer ring edge, the outer ring edge abuts against the bottom of the position conversion member, the elastic reset member is a reset spring sleeved on the self-locking pin, one end of the reset spring abuts against the connecting seat, and the other end abuts against the outer ring edge, the reset spring acts on the outer ring edge and has an elastic force to push the self-locking pin and the position conversion member to move up and reset, the bottom of the connecting seat is provided with an extension port for the lower end of the self-locking pin to extend out, when the self-locking pin is in the unlocking position, the self-locking pin is completely stored in the connecting seat, and when the self-locking pin is in the locking position, the lower end of the self-locking pin protrudes from the bottom of the connecting seat.

[0018] Compared with the prior art, the utility model has the advantage that an identification switch for identifying the gear position is arranged around the shift knob, and an emergency stop switch for detecting whether the self-locking mechanism locks the switch button is arranged around the self-locking button. When the identification switch and the emergency stop switch are both triggered and connected, it means that the shift knob is rotated to the hammer gear position and the self-locking button is pressed, and the self-locking mechanism locks the switch button. At this time, the controller does not interfere with the operation of the electric hammer, so that the electric hammer can remain in a state of continuous working, and the operator does not need to keep his hand on the switch button. When the identification switch is disconnected and the emergency stop switch is triggered and connected, it means that the shift knob is rotated to other gear positions at this time, and the self-locking button is pressed, and the self-locking mechanism locks the switch button, and the controller intervenes to interfere with the operation of the electric hammer. The controller controls the electric hammer to stop, so as to avoid the switch button being locked in the triggered state when the electric hammer is in the drilling gear or the hammer-drilling gear, so that the operation of the electric hammer may endanger the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0022] Figure 3 It is a partial schematic diagram of the shift knob of the utility model when it is rotated to other gear positions;

[0023] Figure 4 It is a position relationship diagram of the self-locking button and the identification switch when the shift knob of the utility model is rotated to other gear positions;

[0024] Figure 5 It is a partial schematic diagram of the utility model when the shift knob is rotated to the hammer position;

[0025] Figure 6 It is a position relationship diagram of the self-locking button and the identification switch when the shift knob of the utility model is rotated to the hammer position;

[0026] Figure 7 It is a partial cutaway schematic diagram of the utility model when the shift knob is rotated to the hammer position;

[0027] Figure 8It is a schematic diagram of the knob slot structure;

[0028] Fig. 9 It is a schematic diagram of the cooperation between the self-locking mechanism and the switch button when the self-locking pin is in the unlocking position;

[0029] Fig.10 It is a cross-sectional schematic diagram of the cooperation between the self-locking mechanism and the switch button when the self-locking pin is in the unlocking position;

[0030] Fig.11 It is a structural schematic diagram of the self-locking mechanism and the emergency stop switch when the self-locking pin is in the unlocking position;

[0031] Fig.12 is a schematic diagram of the cooperation between the self-locking mechanism and the switch button when the switch button is in the second self-locking state;

[0032] Fig.13 is a cross-sectional schematic diagram of the cooperation between the self-locking mechanism and the switch button when the switch button is in the second self-locking state;

[0033] Fig.14 is a schematic diagram of the cooperation between the self-locking mechanism and the switch button when the switch button is in the first self-locking state;

[0034] Fig.15 is a cross-sectional schematic diagram of the cooperation between the self-locking mechanism and the switch button when the switch button is in the first self-locking state;

[0035] Fig.16 It is a cross-sectional schematic diagram of the self-locking mechanism and the self-locking button when the self-locking pin is in the locked position;

[0036] Fig.17 The exploded diagram of the self-locking button and the self-locking mechanism;

[0037] Fig.18 is a cutaway schematic diagram of a connecting seat;

[0038] Fig.19 It is a schematic diagram of the coordination between the shifting member and the position conversion member;

[0039] Fig. 20 It is a structural diagram of the control switch.

[0040] In the figure: 1, housing; 2, shift knob; 3, self-locking button; 4, other function identification; 5, hammer function identification; 6, indication identification; 7, self-locking button; 8, button opening; 9, switch button; 10, controller; 11, identification switch; 12, emergency stop switch; 13, self-locking mechanism; 14, touch plate; 15, control switch; 16, positioning groove; 17, knob groove; 18, self-locking block; 19, connecting port; 20, first receiving part; 21, slide groove; 22, limit column; 23, limit groove; 24, self-locking spring; 25, trigger rod; 26, shift member; 27, connecting seat; 28, second embedded groove; 29, first embedded groove; 30, position conversion member; 3 1. Slot; 32. Limiting protrusion; 33. Shifting block; 34. Upper bottom; 35. Self-locking pin; 36. Second receiving part; 37. Reset spring; 38. Connecting slot; 39. Connecting rod; 40. Annular groove; 41. Annular protrusion; 42. First slot; 43. Outer ring edge; 44. Extension port; 45. Insertion port; 46. Second slot; 47. Limiting hole; 48. Connecting channel; 49. Second shift; 50. Flanging; 51. Connecting sleeve; 52. Upper shell; 53. Lower cover; 54. First inclined guide part; 55. Guide tooth; 56. Shifting protrusion; 57. Linkage part; 58. Second sawtooth; 59. First sawtooth; 60. Second inclined guide part. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0042] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0043] Figure 1-Figure 20 As shown, the electric hammer locking control device with function identification includes a housing 1, on which a control switch 15, a shift knob 2, an identification switch 11, an emergency stop switch 12, a controller 10 and a self-locking mechanism 13 are provided. The identification switch 11, the emergency stop switch 12 and the control switch 15 are all electrically connected to the controller 10 through wires.

[0044] Fig. 20 As shown, the control switch 15 is used to control the start and stop of the electric hammer. Specifically, the control switch 15 is electrically connected to the motor in the electric hammer for outputting power. The control switch 15 includes a switch button 9 for pressing. When the switch button 9 is pressed, the electric hammer is triggered to start, and the motor outputs rotational power. When the switch button 9 is released, the pressing force on the switch button 9 is eliminated, the switch button 9 is reset, the electric hammer stops, and the motor stops outputting rotational power.

[0045] The control switch 15 is a conventional push-type power switch on existing electric hammers and electric picks, such as a brand Ruiyi, model DCKAIG electric hammer / electric pick power switch. Preferably, the control switch 15 includes an elastically retractable trigger rod 25, and the switch button 9 is connected to the trigger rod 25. After the switch button 9 is pressed, the trigger rod 25 moves to trigger the control switch 15, and the control switch 15 is in the on state, and the electric hammer starts. When the pressed switch button 9 is released, the trigger rod 25 pushes the switch button 9 to elastically reset, and the control switch 15 is disconnected, and the machine stops.

[0046] The housing 1 is provided with a first embedding groove 29 , and the control switch 15 is inserted and fixed in the first embedding groove 29 .

[0047] The switch button 9 moves linearly relative to the housing 1 on a straight line.

[0048] Figure 3-Figure 8 As shown, the shift knob 2 is used to adjust the function mode of the electric hammer. The shift knob 2 is rotatably mounted on the housing 1 and has multiple gear positions. The shift knob 2 is rotated to switch to each gear position to switch the function mode of the electric hammer. The electric hammer has a hammer gear and other gears, and the shift knob 2 has a corresponding hammer gear position and other gear positions. The shift knob 2 rotates between the hammer gear position and other gear positions to adjust the function mode of the electric hammer. Other gears of the electric hammer include the drill gear, the hammer drill gear, etc., and other gear positions of the shift knob 2 include the drill gear position, the hammer drill gear position, etc.

[0049] In addition, function labels corresponding to each function mode are provided on the side wall of the casing 1 around the shift knob 2. Multiple function labels surround the outer side of the shift knob 2. The shift knob 2 is provided with an indication mark 6 for indicating, so that the user can clearly know which gear position the shift knob 2 is in. For example, when the shift knob 2 is rotated to the hammer position, the indication mark 6 is opposite to the hammer position function mark 5 on the casing 1. When the shift knob 2 is rotated to other gear positions, the indication mark 6 is opposite to other function marks 4 on the casing 1.

[0050] The identification switch 11 is located around the shift knob 2. The shift knob 2 is provided with a first trigger portion that cooperates with the identification switch 11. When the shift knob 2 is rotated to the hammer position, the first trigger portion is opposite to the identification switch 11 and triggers the identification switch 11, and the identification switch 11 is in the on state. When the shift knob 2 is rotated to other gear positions, the first trigger portion is misaligned with the identification switch 11, and the identification switch 11 is in the off state.

[0051] Specifically, a knob groove 17 is provided on the housing 1, and the shift knob 2 is placed in the knob groove 17 for rotation. The identification switch 11 has a first receiving portion 20 located at the bottom of the knob groove 17, and the first triggering portion protrudes from the bottom surface of the shift knob 2 opposite to the bottom of the knob groove 17. When the shift knob 2 is rotated to the hammer position, the first triggering portion is opposite to the first receiving portion 20, and touches and presses on the first receiving portion 20 to trigger the identification switch 11, and the identification switch 11 is in the on state. When the shift knob 2 is rotated to other gear positions, the bottom surface of the shift knob 2 is opposite to the first receiving portion 20, and the two do not form a touch pressure, and the identification switch 11 is in the off state.

[0052] Preferably, the identification switch 11 is a micro switch, and the first receiving portion 20 is an operating rod raised on the micro switch. When the shift knob 2 is rotated to the hammer position, the first trigger portion is opposite to the operating rod and presses the operating rod downward to put the identification switch 11 in the on state.

[0053] The first triggering part is a self-locking button 3 arranged on the shift knob 2. The self-locking button 3 can move relative to the shift knob 2 along the radial direction of the shift knob 2. A plurality of positioning grooves 16 corresponding to the positions of the gears are arranged on the inner groove wall of the knob groove 17. The shift knob 2 is provided with a self-locking spring 24 which abuts against the self-locking button 3. The self-locking spring 24 has an elastic force to push the self-locking button 3 to move outward. The self-locking button 3 is pushed by the self-locking spring 24 to snap into the positioning groove 16 to lock the shift knob 2 in the gear position. The bottom of the self-locking button 3 has a self-locking block 18 for snapping into the positioning groove 16. The self-locking block 18 8 protrudes from the bottom surface of the shift knob 2 and is used to touch the first receiving portion 20. Since the self-locking block 18 protrudes from the bottom surface of the shift knob 2, the surface of the self-locking block 18 used to touch the first receiving portion 20 has a height difference with the bottom surface of the shift knob 2, so that when the shift knob 2 is rotated to the hammer gear position, the self-locking block 18 can press down the identification switch 11, so that the controller 10 recognizes that the electric hammer is in the hammer gear at this time, and when the shift knob 2 is rotated to other gear positions, the bottom surface of the shift knob 2 will not press down the identification switch 11, so that the controller 10 recognizes that the electric hammer is in other functional gears.

[0054] Preferably, a slide groove 21 is radially opened on the shift knob 2, and the self-locking button 3 is slidably arranged in the slide groove 21. The outer edge of the shift knob 2 is provided with a first notch for the self-locking button 3 to extend out of the slide groove 21, and the bottom surface of the shift knob 2 is provided with a second notch for the self-locking block 18 to extend out. The self-locking spring 24 is arranged in the slide groove 21 and supported between the groove wall of the slide groove 21 and the self-locking button 3. A limiting column 22 is provided on the groove wall of the slide groove 21, and a limiting groove 23 is provided on the self-locking button 3. One end of the self-locking spring 24 is sleeved on the limiting column 22, and the other end is inserted in the limiting groove 23 for limiting. When the gear position of the shift knob 2 needs to be switched, the self-locking button 3 is pressed inwardly to move the self-locking block 18 out of the positioning groove 16, and the self-locking spring 24 is squeezed and contracted to accumulate force. At this time, the shift knob 2 is released from the restriction, and the shift knob 2 is rotated. When the shift knob 2 is rotated to the gear position corresponding to the required functional gear, the self-locking block 18 is opposite to the positioning groove 16 corresponding to the gear position, and the self-locking spring 24 releases its elastic force to push the self-locking button 3 to move outward and reset, so that the self-locking block 18 on the self-locking button 3 is stuck in the relative positioning groove 16 to lock the shift knob 2 again.

[0055] The identification switch 11 is installed inside the housing 1 . A communication port 19 is provided on the housing 1 to communicate with the bottom of the knob groove 17 . The first receiving portion 20 of the identification switch 11 extends from the communication port 19 into the knob groove 17 .

[0056] Fig. 9 , Fig.10 , Fig.14 , Fig.15 As shown, the self-locking mechanism 13 is connected to a self-locking button 7 for pressing. After the self-locking button 7 is pressed, the self-locking mechanism 13 locks the switch button 9 in a triggered state, so that the electric hammer is in a normally open state, and the operator does not need to keep his hand on the switch button 9.

[0057] Fig.11 , Fig.16 , Fig.17 As shown, the self-locking mechanism 13 includes a shift member 26, a connecting seat 27 fixed on the housing 1 and having multiple gears, a position conversion member 30 and an elastic reset member that cooperate with the shift member 26. A first inclined guide portion 54 is provided between adjacent gears on the connecting seat 27. A self-locking pin 35 is connected to the position conversion member 30. The elastic reset member has an elastic force that pushes the self-locking pin 35 and the position conversion member 30 to move and reset. The self-locking button 7 is connected to the shift member 26. When the self-locking button 7 is pressed by an external force, the shift member 26 pushes down the position conversion member 30 and drives the position conversion member 30 to rotate. The position conversion member 30 enters different gears along the first inclined guide portion 54, so that the self-locking pin 35 moves up and down to switch between the locked position and the unlocked position.

[0058] The position conversion member 30 moves up and down and rotates under the interaction of the shift member 26 and the elastic return member to achieve the jump of the gear position.

[0059] Fig.18 As shown, the gear positions arranged on the connecting seat 27 include a first gear position and a second gear position 49 that are arranged in a circle, a second gear position 49 is arranged between two adjacent first gear positions, and a first inclined guide portion 54 for guiding the position conversion member 30 is arranged between adjacent first gear positions and second gear positions 49. When the position conversion member 30 enters the first gear position, the self-locking pin 35 moves up to the unlocking position, and when the position conversion member 30 enters the second gear position 49, the self-locking pin 35 moves down to the locking position.

[0060] The self-locking button 7, the shift member 26, the position conversion member 30 and the self-locking pin 35 are arranged in sequence from top to bottom.

[0061] A connecting channel 48 is provided in the connecting seat 27, and a plurality of gear protrusions 56 are provided on the inner peripheral side wall of the connecting channel 48 at equal intervals. A vertical card slot 31 with an opening downward is formed between adjacent gear protrusions 56, and the vertical card slot 31 is used as the first gear. Two guide teeth 55 with a first inclined guide portion 54 are provided on the lower edge of the gear protrusion 56, and a second gear 49 is formed between the two guide teeth 55. The position conversion member 30 can be movably accommodated in the connecting channel 48 and is clamped in the first gear or the second gear 49. The position of the first gear for the position conversion member 30 to be clamped and the position of the second gear 49 for the position conversion member 30 to be clamped have a spacing in the direction of the position conversion member 30 moving up and down, so that when the position conversion member 30 jumps between the first gear and the second gear 49, the self-locking pin 35 moves and switches between the locking position and the unlocking position, and one end of the shift member 26 is inserted in the connecting channel 48 for pushing the position conversion member 30 down for shifting gears.

[0062] One inclined side of the guide tooth 55 serves as a first inclined guide portion 54 .

[0063] Fig.11 As shown, the above-mentioned slot 31 has an upper bottom 34, and the circumference of the lower end of the shift member 26 is provided with limiting protrusions 32 corresponding to each slot 31, and the top of the connecting seat 27 is provided with an insertion port 45 for the lower end of the shift member 26 to be inserted into the connecting channel 48. The lower end of the shift member 26 is inserted into the connecting channel 48 and the limiting protrusion 32 is stuck in the corresponding slot 31. The limiting protrusion 32 can slide up and down along the slot 31. The shift member 26 is restricted to move up and down in a straight line through the cooperation of the limiting protrusion 32 and the slot 31, and the upper bottom 34 of the slot 31 blocks the limiting protrusion 32 above to restrict the lower end of the shift member 26 from upwardly detaching from the connecting channel 48 from the insertion port 45, so that the lower end of the shift member 26 is connected in the connecting seat 27 and linked with the position conversion member 30.

[0064] The bottom of the self-locking button 7 is provided with a connecting groove 38, and the upper end of the shifting member 26 is inserted into the connecting groove 38 and connected to the self-locking button 7. Specifically, an annular groove 40 is provided on the inner side wall of the connecting groove 38, and a connecting rod 39 extending upward is provided on the upper end of the self-locking pin 35, and an annular convex portion 41 is provided on the side wall of the connecting rod 39. When the connecting rod 39 is inserted into the connecting groove 38, the connecting rod 39 and the groove wall of the connecting groove 38 are squeezed and elastically deformed, so that the annular convex portion 41 is stuck in the annular groove 40, restricting the connecting rod 39 from being separated from the connecting groove 38. A first rotation limiting plane is provided on the side wall of the connecting rod 39, and a second rotation limiting plane is provided on the groove wall of the connecting groove 38. The first rotation limiting plane and the second rotation limiting plane are fitted to restrict the relative rotation of the connecting rod 39 and the self-locking button 7, and the self-locking button 7 and the shifting member 26 are fixedly connected together.

[0065] A button opening 8 is provided on the top of the housing 1 for the self-locking button 7 to extend out for being pressed by hand.

[0066] The position conversion member 30 has a gear block 33 on its circumference for locking into the first gear or the second gear 49. After the self-locking button 7 is pressed, the shift member 26 pushes down the position conversion member 30 and drives the position conversion member 30 to rotate, causing the gear block 33 to jump between the first gear and the second gear 49 to adjust the position of the self-locking pin 35.

[0067] A first slot 42 for inserting the position conversion member 30 is provided at the bottom of the shift member 26, a flange 50 is provided at the lower end of the position conversion member 30, a plurality of second inclined guide portions 60 are provided at the upper edge of the flange 50, and a linkage portion 57 corresponding to the second inclined guide portion 60 is provided on the lower edge of the shift member 26. The position conversion member 30 is inserted into the first slot 42, and the linkage portion 57 on the lower edge of the shift member 26 is opposite to the second inclined guide portion 60 on the flange 50. When the self-locking button 7 is pressed by an external force, the shift member 26 pushes down the position conversion member 30 through the contact between the linkage portion 57 and the second inclined guide portion 60, and drives the position conversion member 30 to rotate, so that the gear block 33 on the position conversion member 30 enters the next gear from the previous gear along the first inclined guide portion 54.

[0068] Fig.17 , Fig.19As shown, preferably, a circle of annular first saw teeth 59 is provided on the upper edge of the flange 50, and a side bevel of the first saw teeth 59 serves as a second inclined guide portion 60. A circle of annular second saw teeth 58 is provided on the lower edge of the shift member 26, and a side bevel of the second saw teeth 58 serves as a linkage portion 57 and is opposite to the second inclined guide portion 60 below. The bevel on a single second saw tooth 58 corresponds to the second inclined guide portion 60 on a single first saw tooth 59 one by one. When the shift member 26 pushes the position conversion member 30 down to the gear block 33 to move out of the first gear position or the second gear position 49, When the shift member 26 is pushed down, the linkage part 57 pushes the position conversion member 30 along the second inclined guide part 60, so that the position conversion member 30 and the gear block 33 rotate, and the gear block 33 rotates to the first inclined guide part 54 and enters the next gear along the first inclined guide part 54. When the gear block 33 is stuck in the first gear or the second gear 49, there is a second inclined guide part 60 opposite to it below the upper linkage part 57, so that when the shift member 26 is pushed down, the second inclined guide part 60 can be pushed by the linkage part 57 to rotate and shift the position conversion member 30 and the gear block 33.

[0069] The gear block 33 is arranged on the outer wall of the flange 50, and the gear block 33 is adjacent to the first serration 59, the upper edge of the gear block 33 is flush with the second inclined guide portion 60, the limiting protrusion 32 is adjacent to the second serration 58, and the lower edge of the limiting protrusion 32 is flush with the second serration 58 for pressing down the hypotenuse of the second inclined guide portion 60.

[0070] The self-locking pin 35 is accommodated in the connecting passage 48, and the bottom of the position conversion member 30 is provided with a second slot 46 for the upper end of the self-locking pin 35 to be inserted, and the upper end of the self-locking pin 35 is inserted in the second slot 46. The middle part of the self-locking pin 35 is provided with an outer ring edge 43, and the outer ring edge 43 abuts against the bottom of the position conversion member 30. The elastic reset member is a reset spring 37 sleeved on the self-locking pin 35. The reset spring 37 acts on the outer ring edge 43 and has an elastic force to push the self-locking pin 35 and the position conversion member 30 to move up and reset. The bottom of the connecting seat 27 is provided with an extension port 44 for the lower end of the self-locking pin 35 to extend out. When the self-locking pin 35 is in the unlocking position, the self-locking pin 35 is completely stored in the connecting seat 27. When the self-locking pin 35 is in the locking position, the lower end of the self-locking pin 35 extends out from the extension port 44 and protrudes from the bottom of the connecting seat 27. Through the elastic force of the reset spring 37, the self-locking pin 35 and the position conversion member 30 move up and down synchronously in the connecting passage 48.

[0071] The connecting seat 27 includes an upper shell 52 and a lower cover 53. The upper shell 52 is provided with a connecting sleeve 51. The connecting channel 48 is axially arranged in the connecting sleeve 51. The top of the upper shell 52 is provided with the above-mentioned insertion port 45 which is connected to the upper end of the connecting channel 48. The lower cover 53 is connected to the bottom of the upper shell 52, and the lower cover 53 is provided with the above-mentioned extension port 44 which is connected to the lower end of the connecting channel 48.

[0072] Preferably, the lower cover 53 is snap-connected to the bottom of the upper shell 52 .

[0073] The housing 1 is provided with a second embedding groove 28 , and the connecting seat 27 is inserted into the second embedding groove 28 and fixed to the housing 1 .

[0074] Preferably, four gear protrusions 56 are evenly spaced on the inner side wall of the connecting channel 48, and the four gear protrusions 56 are arranged in a ring array on the inner side wall of the connecting channel 48 to form four evenly spaced slots 31 on the connecting channel 48, and a second gear position 49 is provided between adjacent slots 31. Four limiting protrusions 32 are evenly spaced on the outer side wall of the shift member 26, and each limiting protrusion 32 is stuck in a corresponding slot 31 and slides up and down. Four gear blocks 33 are evenly spaced on the outer side wall of the flange 50, and the four gear blocks 33 are respectively stuck in the four slots 31, or the four gear blocks 33 are respectively stuck in the four second gear positions 49.

[0075] Since the first gear position is formed by two adjacent gear position protrusions 56 enclosing a slot 31, and the second gear position 49 is formed by two guide teeth 55 on the lower edge of the gear position protrusion 56, the first gear position and the second gear position 49 have a height difference, and the first gear position is higher than the second gear position 49. When the position conversion member 30 moves up and is stuck in the first gear position, the self-locking pin 35 moves up synchronously with the position conversion member 30, so that the self-locking pin 35 is in the unlocking position. When the position conversion member 30 moves down and is stuck in the second gear position 49, the self-locking pin 35 moves down synchronously with the position conversion member 30, so that the self-locking pin 35 moves down from the unlocking position to the locking position.

[0076] Figure 9-11 As shown, when the four gear clamping blocks 33 are respectively clamped in the four clamping slots 31, the gear clamping blocks 33 abut against the limiting protrusions 32 clamped in the clamping slots 31 above. At this time, the gear clamping blocks 33 are clamped in the first gear position, and the self-locking pin 35 is in the unlocking position. The self-locking pin 35 is completely stored in the connecting seat 27. Fig.16As shown, the user presses the self-locking button 7, and the shift member 26 pushes the position conversion member 30 up and down through the linkage portion 57 against the second inclined guide portion 60, so that the position conversion member 30 moves downward. When the gear block 33 moves down out of the slot 31, the linkage portion 57 pushes the position conversion member 30 to rotate during the process of pushing down along the second inclined guide portion 60, and the gear block 33 rotates to the first inclined guide portion 54. Under the elastic force of the reset spring 37, the position conversion member 30 and the self-locking pin 35 make the gear block 33 enter the second gear position 49 of the next level along the first inclined guide portion 54. At this time, the gear block 33 is stuck on the second gear position 49, so that the self-locking pin 35 moves down to the locking position, and the lower end extends out of the extension port 44. The user presses the self-locking button 7 again, and the shift member 26 pushes the position down and down through the linkage portion 57 against the second inclined guide portion 60. The conversion member 30 causes the position conversion member 30 to move downward. When the gear block 33 moves down out of the second gear position 49, the linkage portion 57 pushes the position conversion member 30 to rotate during the process of pushing down along the second inclined guide portion 60, and the gear block 33 rotates to the first inclined guide portion 54. Under the elastic force of the reset spring 37, the position conversion member 30 and the self-locking pin 35 make the gear block 33 enter the first gear position of the next level along the first inclined guide portion 54. At this time, the gear block 33 is stuck in the slot 31 and abuts against the upper limiting protrusion 32, so that the self-locking pin 35 moves up to the unlocking position. Every time the user presses the button, the gear block 33 on the position conversion member 30 jumps once, and the gear block 33 jumps to the next gear position. During the repeated pressing of the self-locking button 7, the position conversion member 30 always rotates step by step clockwise or counterclockwise.

[0077] Fig.14 , Fig.15 As shown, the switch button 9 is provided with a limiting hole 47 that cooperates with the self-locking pin 35. When the switch button 9 is in the first self-locking state, the self-locking pin 35 moves and switches to the locking position, and the switch button 9 is pressed, and the self-locking pin 35 is inserted into the limiting hole 47 on the switch button 9 to limit the switch button 9 from resetting.

[0078] First, press the switch button 9 to start the machine. At this time, the limit hole 47 is opposite to the upper extension opening 44. Then press the self-locking button 7 once, the self-locking pin 35 moves down to the locked position, and the self-locking pin 35 extends out of the extension opening 44 and is inserted into the limit hole 47 to form a self-locking state, limiting the reset of the switch button 9 and keeping the machine in a state of continuous operation. There is no need for the operator to keep pressing the switch button 9 to keep it started, and the operation is more labor-saving. Press the self-locking button 7 once again, the self-locking pin 35 moves up to the unlocked position, and the lower end of the self-locking pin 35 moves out of the limit hole 47 to release the restriction on the switch button 9. At this time, the switch button 9 is reset to stop the machine.

[0079] The emergency stop switch 12 is arranged around the self-locking button 7. The self-locking button 7 is provided with a second triggering part cooperating with the emergency stop switch 12. When the self-locking button 7 is pressed, the second triggering part triggers the emergency stop switch 12, and the emergency stop switch 12 is in the on state.

[0080] The second triggering part is a touch-pressure plate 14 fixed on the self-locking button 7 and extending downward. The emergency stop switch 12 has a second receiving part 36 extending to the displacement stroke of the touch-pressure plate 14. After the self-locking button 7 is pressed, the touch-pressure plate 14 presses on the second receiving part 36 to trigger the emergency stop switch 12 to start.

[0081] Preferably, the emergency stop switch 12 is a micro switch, and the second receiving portion 36 is an operating rod raised on the micro switch. When the self-locking button 7 is pressed, the touch plate 14 moves down to a position opposite to the operating rod, and presses down the operating rod to put the emergency stop switch 12 in the on state.

[0082] The controller 10 controls the electric hammer by monitoring the identification switch 11 and the emergency stop switch 12, so that the electric hammer has a first control state and a second control state.

[0083] In the first control state, the identification switch 11 and the emergency stop switch 12 are both triggered and turned on, and the controller 10 does not interfere with the operation of the electric hammer. Specifically, when the identification switch 11 is triggered and turned on, the controller 10 identifies that the electric hammer is in the hammer function mode through the identification switch 11. At this time, the controller 10 is set to be in an unprotected state by default. At this time, if the switch button 9 is pressed and the self-locking button 7 is pressed at the same time, the self-locking mechanism 13 locks the switch button 9 in the triggered state, and the controller 10 does not interfere with the operation of the electric hammer. The controller 10 will not turn off the power supply of the electric hammer. The operator can operate the electric hammer normally when the switch button 9 is locked in the pressed state, so that the electric hammer can remain in a continuous working state without the operator's hand pressing on the switch button 9 all the time.

[0084] In the second control state, the identification switch 11 is disconnected and the emergency stop switch 12 is triggered and turned on, and the controller 10 controls the electric hammer to stop. Specifically, when the identification switch 11 is not triggered and is in the disconnected state, the controller 10 identifies that the electric hammer is in other functional modes through the identification switch 11. At this time, the controller 10 is set to the protection state by default in the program. At this time, if the switch button 9 is pressed and the self-locking button 7 is pressed at the same time, the self-locking mechanism 13 locks the switch button 9 in the triggered state, and the self-locking button 7 touches the emergency stop switch 12 through the second trigger part, so that the emergency stop switch 12 is turned on. After receiving the signal that the emergency stop switch 12 is turned on, the controller 10 immediately turns off the power supply, so that the operator locks the switch button 9 in the pressed trigger state when in the hammer drill mode or the drill mode, and the electric hammer will not start, so as to avoid the switch button 9 being locked in the trigger state when the electric hammer is in the drill mode or the hammer drill mode, causing harm to the operator. The switch button 9 can only be controlled in the drill mode or the hammer drill mode.

[0085] The controller 10 monitors the identification switch 11 and the emergency stop switch 12 to achieve two different control states, thereby meeting the user's control requirements for different functional modes.

[0086] Fig.12 , Fig.13 As shown, the patent also has a second self-locking state, the self-locking pin 35 moves and switches to the locked position, and the switch button 9 is not pressed. The self-locking pin 35 blocks the pressing stroke of the switch button 9 to limit the switch button 9 from being pressed, thereby achieving self-locking and preventing the operator from accidentally touching the switch button 9 to start the machine during the power-on process of the electric hammer or electric pick.

[0087] When the switch button 9 is in a natural state where it is not pressed, press the self-locking button 7 once, the self-locking pin 35 moves down to the locked position, and the self-locking pin 35 blocks the pressing stroke of the switch button 9 to limit the switch button 9 from being pressed, thereby forming a self-locking state and preventing the machine from being started. Press the self-locking button 7 once more, the self-locking pin 35 moves up to the unlocked position, and the lower end of the self-locking pin 35 moves away from the pressing stroke of the switch button 9, thereby releasing the restriction on the switch button 9. At this time, the switch button 9 can be pressed to start the machine.

[0088] Preferably, the moving direction of the switch button 9 is perpendicular to the moving direction of the self-locking pin 35 .

[0089] This structure is not only applicable to electric hammers, but also to electric picks and other electric tools.

[0090] The above is an introduction to the electric hammer locking control device with function identification provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An electric hammer locking control device with function identification, comprising a housing, a control switch for controlling the start and stop of the electric hammer, and a shift knob with multiple gear positions, the shift knob is rotated between the hammer position and other gear positions to adjust the function mode of the electric hammer, the control switch comprises a switch button for pressing, the switch button is triggered to start after being pressed, and resets after the pressing force is eliminated, characterized in that: The housing is also provided with an identification switch, an emergency stop switch, a controller and a self-locking mechanism, the identification switch and the emergency stop switch are electrically connected to the controller, the identification switch is located around the shift knob, the shift knob is provided with a first trigger part that matches the identification switch, when the shift knob is rotated to the hammer gear position, the first trigger part is opposite to the identification switch and triggers the identification switch, and the identification switch is in an on state, when the shift knob is rotated to other gear positions, the first trigger part is misaligned with the identification switch, and the identification switch is in an off state, a self-locking button for pressing is connected to the self-locking mechanism, and after the self-locking button is pressed, the self-locking mechanism locks the switch button in the triggered state, the emergency stop switch is arranged around the self-locking button, and the self-locking button is provided with a second trigger part that matches the emergency stop switch, when the self-locking button is pressed, the second trigger part triggers the emergency stop switch, and the emergency stop switch is in an on state, In the first control state, the identification switch and the emergency stop switch are both triggered and turned on, and the controller does not interfere with the operation of the electric hammer. In the second control state, the identification switch is disconnected and the emergency stop switch is triggered and turned on, and the controller controls the electric hammer to stop.

2. The electric hammer locking control device with function identification according to claim 1, characterized in that: The self-locking mechanism includes a shift member, a connecting seat fixed on the casing and having multiple gear positions, a position conversion member and an elastic reset member that cooperate with the shift member, a first inclined guide portion is provided between adjacent gear positions on the connecting seat, a self-locking pin is connected to the position conversion member, and the elastic reset member has an elastic force that pushes the self-locking pin and the position conversion member to move and reset, the self-locking button is connected to the shift member, when the self-locking button is pressed by external force, the shift member pushes down the position conversion member and drives the position conversion member to rotate, the position conversion member enters different gear positions along the first inclined guide portion, so that the self-locking pin moves up and down and switches between the locking position and the unlocking position, the switch button is provided with a limiting hole that cooperates with the self-locking pin, in the first self-locking state, the self-locking pin moves and switches to the locking position, and the switch button is pressed, and the self-locking pin is inserted into the limiting hole on the switch button to limit the reset of the switch button.

3. The electric hammer locking control device with function identification according to claim 2, characterized in that: In the second self-locking state, the self-locking pin moves and switches to the locking position, and the switch button is not pressed, and the self-locking pin blocks the pressing stroke of the switch button to limit the switch button from being pressed.

4. The electric hammer locking control device with function identification according to claim 1, characterized in that: The housing is provided with a knob groove, and the shift knob is placed in the knob groove for rotation. The identification switch has a first receiving portion located at the bottom of the knob groove, and the first triggering portion protrudes from the bottom surface of the shift knob opposite to the bottom of the knob groove. When the shift knob is rotated to the hammer position, the first triggering portion is opposite to the first receiving portion, and touches and presses on the first receiving portion to trigger the identification switch. When the shift knob is rotated to other gear positions, the bottom surface of the shift knob is opposite to the first receiving portion, and the two do not form a touch pressure.

5. The electric hammer locking control device with function identification according to claim 4, characterized in that: The first trigger part is a self-locking button arranged on the shift knob, and the self-locking button can move relative to the shift knob in the radial direction of the shift knob, and a plurality of positioning grooves corresponding to each gear position are provided on the inner groove wall of the knob groove, and the shift knob is provided with a self-locking spring that presses against the self-locking button, and the self-locking spring has an elastic force that pushes the self-locking button to move outward. The self-locking button is pushed by the self-locking spring to be inserted into the positioning groove to lock the shift knob in the gear position, and the bottom of the self-locking button has a self-locking block for being inserted into the positioning groove, and the self-locking block protrudes from the bottom surface of the shift knob to contact and press the first receiving part.

6. The electric hammer locking control device with function identification according to claim 1, characterized in that: The second triggering part is a touch plate fixed on the self-locking button, and the emergency stop switch has a second receiving part extending to the displacement stroke of the touch plate. After the self-locking button is pressed, the touch plate presses on the second receiving part to trigger the emergency stop switch.

7. The electric hammer locking control device with function identification according to claim 2, characterized in that: The gear positions arranged on the connecting seat include a first gear position and a second gear position that are arranged in a circle, a second gear position is arranged between two adjacent first gear positions, and a first inclined guide portion for guiding the position conversion member is arranged between adjacent first gear positions and second gear positions. When the position conversion member enters the first gear position, the self-locking pin moves up to the unlocking position, and when the position conversion member enters the second gear position, the self-locking pin moves down to the locking position.

8. The electric hammer locking control device with function identification according to claim 7, characterized in that: The shift member, position conversion member and self-locking pin are arranged in sequence from top to bottom, a connecting channel is provided in the connecting seat, a plurality of gear protrusions are provided on the inner peripheral side wall of the connecting channel at equal intervals, a vertical slot opening downward is formed between adjacent gear protrusions, the vertical slot is used as the first gear, two guide teeth with a first inclined guide portion are provided on the lower edge of the gear protrusion, the second gear is formed between the two guide teeth, the position conversion member can be movably accommodated in the connecting channel, and is stuck in the first gear or the second gear, the position of the first gear for the position conversion member to be engaged and the position of the second gear for the position conversion member to be engaged have a spacing in the direction of the position conversion member moving up and down, one end of the shift member is inserted in the connecting channel for pushing the position conversion member down to shift gears.

9. The electric hammer locking control device with function identification according to claim 8, characterized in that: The locking member has an upper bottom, and a limiting protrusion corresponding to each locking slot is provided in the circumferential direction of the lower end of the gear shift member, and the top of the connecting seat is provided with an insertion opening for the lower end of the gear shift member to be inserted into the connecting channel, and the lower end of the gear shift member is inserted into the connecting channel and the limiting protrusion can be slid up and down and locked in the corresponding locking slot, and the bottom of the gear shift member is provided with a first slot for the position conversion member to be inserted, and the lower end of the position conversion member is provided with a flange, and the upper edge of the flange is provided with a plurality of second inclined guide parts, and the lower edge of the gear shift member is provided with a linkage part corresponding to the second inclined guide part, and the side wall of the flange in the circumferential direction is provided with a gear block that is locked in the first gear position or the second gear position. When the self-locking button is pressed by external force, the gear shift member contacts the second inclined guide part through the linkage part and pushes down the position conversion member, and drives the position conversion member to rotate, so that the gear block on the position conversion member enters the next gear position from the previous gear position along the first inclined guide part.

10. The electric hammer locking control device with function identification according to claim 8 or 9, characterized in that: The self-locking pin is accommodated in the connecting channel, and the bottom of the position conversion member has a second slot for the upper end of the self-locking pin to be inserted, and the upper end of the self-locking pin is inserted in the second slot. The middle part of the self-locking pin is provided with an outer ring edge, and the outer ring edge abuts against the bottom of the position conversion member. The elastic reset member is a reset spring sleeved on the self-locking pin, one end of the reset spring abuts against the connecting seat, and the other end abuts against the outer ring edge. The reset spring acts on the outer ring edge and has an elastic force to push the self-locking pin and the position conversion member to move up and reset. The bottom of the connecting seat is provided with an extension port for the lower end of the self-locking pin to extend out. When the self-locking pin is in the unlocking position, the self-locking pin is completely stored in the connecting seat. When the self-locking pin is in the locking position, the lower end of the self-locking pin protrudes from the bottom of the connecting seat.

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