Electric pickaxe

Abstract

An electric pickaxe is characterized in that a piston track is arranged in a pickaxe body, one end of the pickaxe body is combined with a rotating shaft seat, a rotating shaft rotatably penetrates through the rotating shaft seat in a pivoted mode, the rotating shaft is connected with an eccentric block in series, a protruding shaft on one side of the eccentric block is connected with a connecting arm in a pivoted mode, and a piston capable of sliding in the piston track in a reciprocating mode is connected with the connecting arm in a pivoted mode. The rotating shaft seat is connected with a motor seat in parallel along the extending direction of the pickaxe body, the motor seat is combined with a motor, the motor is connected with a speed reducer, an output shaft of the speed reducer is combined with a gear, the gear is meshed with another gear combined with the rotating shaft, two sides of the pickaxe body are combined with two grips, and at least one grip is provided with a trigger which can be used for starting the motor; through the design of transmission of the two meshed gears, the motor and the rotating shaft seat can be arranged in parallel, and the effect that the surrounding width can be reduced when the motor serves as a power source of the electric pickaxe is achieved.

Description

Technical Field

[0001] The utility model relates to an electric hand tool, and in particular to an electric pick driven by a motor. Background Art

[0002] The existing electric pickaxe has a piston track formed inside the pickaxe body, a piston is slidably provided in the piston track, and a transmission device is combined at one end of the pickaxe body. The transmission device drives the piston to reciprocate in the piston track to vibrate the pickaxe body, thereby the pickaxe drill installed inside the pickaxe body can damage the floor or wall of the building, or the pickaxe drill can compact stones and gravel with the vibration of the pickaxe body.

[0003] If the driving device of the above-mentioned conventional electric pick is connected to the crankshaft by a motor to drive the piston, the motor will protrude along the axial direction of the crankshaft in the direction of the user's operation when it is directly connected to the crankshaft. The overly protruding motor will cause obstacles when the user operates the electric pick; if a thin motor is used to solve the problem of the motor protrusion, it will also cause the disadvantage that the motor of the existing power tool cannot be used as a power source to drive the electric pick. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an electric pickaxe, which changes the direction of motor transmission by meshing two gears, so that the motor and the rotating shaft can be arranged in parallel, thereby reducing the width of the motor protruding from the electric pickaxe. In this way, in addition to avoiding the motor protruding too much and causing obstacles to the user's operation, the motor of the existing power tool can also be used as the power source of the electric pickaxe.

[0005] In order to achieve the above purpose, the utility model provides an electric pickaxe, comprising a pickaxe body, a transmission gear box, a motor device, and a gripping device. The pickaxe body is a long rod body with a connecting seat at one end and a piston track inside. The transmission gear box includes a shaft seat, a motor seat, a shaft assembly, a reducer, a first gear and a second gear; the shaft seat is combined with the connecting seat, and the two sides of the shaft seat have a first shaft hole and a second shaft hole, and the shaft seat has a chamber, and the chamber is communicated with the piston track; the motor seat is connected to the shaft seat in parallel along the extending direction of the pickaxe body; the shaft assembly has a shaft, a piston and a connecting arm, the shaft pivots through the first shaft hole and the second shaft hole, the shaft is connected in series with an eccentric block, and the eccentric block has a center of gravity and a convex shaft on opposite sides relative to the shaft; the piston is reciprocatingly slidably arranged on the piston track, one end of the connecting arm is pivotally connected to the convex shaft, and the other end is pivotally connected to the piston; the reducer is arranged on the motor seat and has an output shaft; the first gear is combined with the output shaft, and the second gear is combined with the shaft and meshes with the first gear. The motor device includes a housing, which is combined with the motor seat and parallel to the shaft seat; a motor body is arranged in the housing, and the motor body has a motor shaft, and the motor shaft is connected to the reducer. The holding device is combined with the pick body and has two handles, and at least one of the two handles has a trigger, and the trigger is used to start the operation of the motor body.

[0006] Preferably, the direction in which the rotating shaft and the output shaft of the utility model extend is perpendicular to the direction in which the pickaxe body extends; the eccentric block includes a first eccentric block and a second eccentric block opposite to each other, one side of the first eccentric block and the second eccentric block respectively have the center of gravity portion, the convex shaft includes a barrel and a rod inserted into the barrel, the barrel is connected to the other side of the first eccentric block, and the rod is connected to the other side of the second eccentric block. Specifically, the shell includes two battery sockets around it, and the two battery sockets are formed on the left and right sides of the shell.

[0007] Preferably, the shell of the motor device of the present invention is combined with the motor base at one end, and is combined with an electrical box at the other end of the shell, a control circuit board is arranged in the electrical box, and the motor body and each trigger are electrically connected to the control circuit board respectively; there is at least one battery socket around the shell, and a battery pack can be detachably inserted into each battery socket; each battery pack is electrically connected to the control circuit board, thereby supplying the motor body with the power required for operation.

[0008] Preferably, the motor seat and the rotating shaft seat of the utility model form a gear box groove on the side away from the motor device, and an outer cover is combined with the gear box groove cover; the reducer, the first gear and the second gear are arranged in the gear box groove.

[0009] Preferably, the reducer of the present invention has a sun gear fixedly mounted on one side of the gear box groove corresponding to the motor seat, and a planetary gear carrier is arranged on the inner side of the sun gear. A plurality of rotatable planetary gears are combined around the planetary gear carrier in a circular and evenly spaced arrangement. The outer sides of the plurality of planetary gears engage with the sun gear, and the output shaft is connected to the center of the planetary gear carrier. The outer end of the motor shaft has a gear portion, and the gear portion engages with the inner sides of the plurality of planetary gears, thereby connecting the motor shaft to the reducer.

[0010] Preferably, the pick body of the utility model includes a lower pick body and an upper pick body connected to each other; the connecting seat is formed at one end of the upper pick body away from the lower pick body, and the piston track is formed in the upper pick body; the lower pick body is provided with an insertion hole, and the insertion hole is a straight hole whose extension direction is the same as the extension direction of the pick body, and the insertion hole can be used for the pick drill to be inserted therein.

[0011] Preferably, the holding device of the present invention comprises a handle seat, a shock absorbing mechanism and the two handles; the handle seat comprises a connecting rod and two side rods connected to both ends of the connecting rod; the shock absorbing mechanism is connected between the two side rods and the upper pick body; the two handles are combined with the two side rods.

[0012] The effect of the utility model is that, by meshing the first gear and the second gear, the direction of power transmission of the motor shaft of the motor device is changed, so that the outer shell of the motor device and the shaft seat of the shaft assembly disposed inside can be arranged in parallel up and down. In this way, the problem of the motor device protruding too much when directly connected to the shaft assembly is avoided, and the width around the electric pick is effectively reduced, making it easier for users to operate the electric pick. In addition, since there is no need to redesign a thin motor to avoid the motor protruding too much, the motor device of the existing electric tool can be combined with the motor seat as the power source of the electric pick, and a more economical effect can be achieved when manufacturing the electric pick by sharing the motor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereoscopic diagram of a preferred embodiment of the utility model with a mounting cover.

[0014] Figure 2 It is a stereogram of the above preferred embodiment of the utility model.

[0015] Figure 3 It is an exploded view of the above preferred embodiment of the utility model with the outer cover disassembled.

[0016] Figure 4 yes Figure 3 Exploded view from another angle.

[0017] Figure 5 It is a top view of the above preferred embodiment of the utility model.

[0018] Figure 6 yes Figure 5 Cross-sectional view along direction 6-6.

[0019] Figure 7 yes Figure 5 A cross-sectional view taken along direction 7-7.

[0020] Description of reference numerals:

[0021] 100: Electric pickaxe

[0022] 10: Pickaxe

[0023] 12: Lower pick body

[0024] 121: Jack

[0025] 14: Upper pickaxe body

[0026] 16: Connecting seat

[0027] 18: Piston track

[0028] 20: Transmission gear box

[0029] 21: First Gear

[0030] 22: Shaft seat

[0031] 221: First shaft seat

[0032] 222: Second shaft seat

[0033] 223: First axis hole

[0034] 224: Second axis hole

[0035] 23: Second Gear

[0036] 24: Motor seat

[0037] 241: Gearbox slot

[0038] 25: Outer cover

[0039] 26: Shaft assembly

[0040] 261: Shaft

[0041] 262: Piston

[0042] 263: Linking Arm

[0043] 264: Hole

[0044] 27: Eccentric block

[0045] 271: First eccentric block

[0046] 272: Second eccentric block

[0047] 28: Reducer

[0048] 281: Sun gear

[0049] 282: Planetary gear carrier

[0050] 283: Planetary gear

[0051] 284: Output shaft

[0052] 30: Motor device

[0053] 32: Shell

[0054] 321: Battery socket

[0055] 34: Battery Pack

[0056] 36: Motor body

[0057] 361: Motor shaft

[0058] 362: Gear Department

[0059] 38: Electrical box

[0060] 381: Control circuit board

[0061] 40: Grip device

[0062] 42: Grip seat

[0063] 421: Connecting rod

[0064] 422: Sidebar

[0065] 44: Shock absorption mechanism

[0066] 46: Grip

[0067] 461: Trigger

[0068] 50: Cover

[0069] A: convex shaft

[0070] A1: Barrel

[0071] A2: Rod

[0072] G: Center of gravity

[0073] L: Long axis direction

[0074] S: Chamber

[0075] X: Pickaxe DETAILED DESCRIPTION

[0076] In order to more clearly illustrate the present invention, a preferred embodiment is given below with detailed description in conjunction with the accompanying drawings. Figure 1 and Figure 2 FIG. 1 is a preferred embodiment of an electric pickaxe 100 of the present invention, which comprises a pickaxe body 10, a transmission gear box 20, a motor device 30, and a gripping device 40. When in use, a cover 50 can be placed around the transmission gear box 20 and the motor device 30, wherein:

[0077] Please see Figure 1 , Figure 2 and Figures 5 to 7 As shown, the pick body 10 is a long rod extending along a long axis direction L, and the pick body 10 includes a lower pick body 12 and an upper pick body 14, and the lower pick body 12 is connected to the upper pick body 14 along the long axis direction L. The lower end of the lower pick body 12 has a plug hole 121, and the plug hole 121 is a straight hole extending in the same direction as the extending direction of the pick body 10, that is, the long axis direction L; when the electric pick 100 is used, the plug hole 121 of the pick body 10 is used to provide a pick X for insertion. A connecting seat 16 is formed at one end of the upper pick body 14 away from the lower pick body 12, and a piston track 18 is provided inside the upper pick body 14, and the extending direction of the piston track 18 is also in the same direction as the long axis direction L, and the piston track 18 passes through the connecting seat 16.

[0078] Please see Figures 2 to 7 As shown, the transmission gear box 20 includes a shaft seat 22, a motor seat 24, a shaft assembly 26, a reducer 28, a first gear 21 and a second gear 23. The shaft seat 22 is combined with the connecting seat 16 of the pick body 10, and the shaft seat 22 includes a first shaft seat 221 and a second shaft seat 222 that are relatively combined front and back. The first shaft seat 221 and the second shaft seat 222 have a first shaft hole 223 and a second shaft hole 224 at the front and back opposite positions, respectively, and a chamber S is formed between the first shaft seat 221 and the second shaft seat 222, that is, inside the shaft seat 22, and the chamber S is communicated with the piston track 18 of the pick body 10.

[0079] The motor seat 24 is connected in parallel along the direction in which the pickaxe body 10 extends, that is, along the long axis direction L. Specifically, the motor seat 24 is connected in parallel to the first shaft seat 221. The motor seat 24 can be combined with the motor device 30, and the motor seat 24 and the first shaft seat 221 of the shaft seat 22 form a gear box groove 241 on the side away from the motor device 30, and an outer cover 25 is combined with the gear box groove 241.

[0080] The rotating shaft assembly 26 has a rotating shaft 261, a piston 262 and a connecting arm 263. The rotating shaft 261 can be rotatably pivoted through the first shaft hole 223 and the second shaft hole 224 on both sides of the rotating shaft seat 22. The extending direction of the rotating shaft 261 is perpendicular or substantially perpendicular to the long axis direction L, and an eccentric block 27 is connected in series in the middle of the rotating shaft 261. The eccentric block 27 is located in the chamber S and includes a first eccentric block 271 and a second eccentric block 272 that are opposite and have the same shape. The rotating shaft 261 is connected in the middle of the first eccentric block 271 and the second eccentric block 272.

[0081] like Figure 6 and Figure 7 As shown, the first eccentric block 271 and the second eccentric block 272 have a center of gravity G on one side in the same direction respectively; a convex shaft A is connected between the other sides of the first eccentric block 271 and the second eccentric block 272, and the axial direction of the convex shaft A is parallel to the axial direction of the rotating shaft 261, and the convex shaft A includes a barrel A1 and a rod A2 inserted into the barrel A1. The barrel A1 is connected to the other side of the first eccentric block 271, and the rod A2 is connected to the other side of the second eccentric block 272. The piston 262 is reciprocatingly slidably disposed on the piston track 18 of the pick body 10, and one end of the connecting arm 263 has a set of holes 264, and the set of holes 264 is sleeved on the convex shaft A, so that one end of the connecting arm 263 is pivotally connected to the convex shaft, and the other end of the connecting arm 263 is pivotally connected to the piston 262. In other preferred embodiments, only a single eccentric block 27 may be connected in series in the middle of the rotating shaft 261. In this case, the eccentric block 27 has the center of gravity portion G and a convex shaft in the shape of a convex column on opposite sides of the rotating shaft 261.

[0082] Please see Figure 3 , Figure 4 and Figure 6As shown, the reducer 28 is disposed on the motor base 24. Specifically, the reducer 28 is fixed with a sun gear 281 on one side of the gear box slot 241 corresponding to the motor base 24, and a planetary gear carrier 282 is coaxially disposed on the inner side of the sun gear 281. The planetary gear carrier 282 is surrounded by a plurality of rotatable planetary gears 283 in a surrounding and equally spaced arrangement. The outer sides of the plurality of planetary gears 283 mesh with the sun gear 281. An output shaft 284 is connected to the center of the planetary gear carrier 282, and the direction in which the output shaft 284 extends is perpendicular to the long axis direction L. The first gear 21 is located in the gear box slot 241 and is fixed to the output shaft 284 in a central sleeve. The second gear 23 is located in the gear box slot 241 and is fixed to one end of the rotating shaft 261 in a central sleeve. The second gear 23 meshes with the first gear 21. In this preferred embodiment, the diameter size and the number of teeth around the second gear 23 are the same as the diameter size and the number of teeth around the first gear 21, and the gear ratio between the two is 1:1; in other preferred embodiments, the gear ratio between the first gear 21 and the second gear 23 can be other ratios besides 1:1.

[0083] Please see Figure 4 and Figure 6 to Figure 7 As shown, the motor device 30 includes a housing 32, two battery packs 34, a motor body 36, and an electrical box 38. One end of the housing 32 is coupled to the side of the motor seat 24 away from the reducer 28, and the housing 32 is arranged side by side with the shaft seat 22; two battery sockets 321 are provided on the left and right sides around the housing 32; and the two battery packs 34 are detachably inserted into the two battery sockets 321. The motor body 36 is disposed in the housing 32, and the motor body 36 has a motor shaft 361, which passes through the housing 32 and the outer end of the motor shaft 361 is connected to the reducer 28. Specifically, the outer end of the motor shaft 361 has a gear portion 362, and the gear portion 362 is meshed with the inner side of the plurality of planetary gears 283 of the reducer 28, thereby connecting the shaft 261 to the reducer 28. The electrical box 38 is coupled to the other end of the housing 32, and a control circuit board 381 is disposed in the electrical box 38. The motor body 36 and the plurality of battery packs 34 are electrically connected to the control circuit board 381, respectively, so that the control circuit board 381 can control the operation of the motor body 36, and each battery pack 34 supplies the motor body 36 with power required for operation.

[0084] Please see Figures 2 to 4As shown, the holding device 40 is combined with the pick body 10. Specifically, the holding device 40 includes a handle seat 42, a shock absorbing mechanism 44 and two handles 46. The handle seat 42 includes a connecting rod 421 and two side rods 422 connected to both ends of the connecting rod 421 and extending downward. The shock absorbing mechanism 44 is a combination of multiple spring plates and connected between the two side rods 422 and the upper pick body 14. The two handles 46 are combined with the two side rods 422, and at least one of the two handles 46 has a trigger 461. Figure 4 and Figure 6 As shown, the trigger 461 is electrically connected to the control circuit board 381 of the motor device 30 , and when the user presses the trigger 461 , the motor body 36 can be started to operate.

[0085] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, when the above preferred embodiment of the utility model is used, the pickaxe X is installed on the pickaxe body 10 by inserting the pickaxe X into the insertion hole 121 of the pickaxe body 10, and then the user holds the two handles 46 of the holding device 40 and starts the motor body 36 of the motor device 30 by pressing the trigger 461 of the handle 46. The motor shaft 361 of the motor body 36 is decelerated by the reducer 28, and the first gear 21 and the second gear 23 are meshed and converted to drive, so that the motor device 30 can drive the shaft assembly 26 arranged in the shaft seat 22 and parallel to the motor device 30.

[0086] When the rotating shaft 261 of the rotating shaft assembly 26 is driven to rotate by the motor device 30, the eccentric block 27 is driven to rotate together, so that the eccentric block 27 drives the piston 262 through the connecting arm 263 with the convex axis A at the eccentric position, so that the piston 262 reciprocates up and down along the piston track 18 in the pick body 10, and the reciprocating movement of the piston 262 drives the pick body 10 to vibrate, so as to achieve the effect of destroying the building or road surface at the construction site or compacting stones and gravel by the vibration of the pick X installed in the pick body 10: in other embodiments, the piston 262 can also directly impact the pick X installed in the pick body 10, so as to achieve the effect of destroying the building or road surface at the construction site or compacting stones and gravel by the vibrating pick X.

[0087] The rotation shaft 261 of the motor body 36 of the utility model and the rotation shaft 261 of the rotation shaft assembly 26 are designed to change the transmission direction through the meshing transmission of the first gear 21 and the second gear 23, so that the housing 32 of the motor device 30 and the rotation shaft seat 22 in which the rotation shaft assembly 26 is arranged can be arranged in a vertical parallel form. In this way, the electric pick 100 using the motor device 30 as a power source can reduce the width of the surrounding, that is, the degree of protrusion along the axial direction of the rotation shaft 261, so as to avoid the motor device 30 protruding too much toward the user when the motor device 30 is directly connected to the rotation shaft assembly 26, thereby hindering the user from operating the electric pick 100; in this way, the motor device 30 does not need to be designed to be thin, and can share the same motor device 30 with other electric devices, such as impact drills, so that it is more economical in production.

[0088] The above description is only a preferred feasible embodiment of the present utility model. Any equivalent changes made by applying the specification and claims of the present utility model should be included in the patent scope of the present utility model.

Claims

1. An electric pick, characterized in that: Its structure includes: A pick body, which is a long rod with a connecting seat at one end and a piston track inside; The transmission gear box comprises a shaft seat, a motor seat, a shaft assembly, a reducer, a first gear and a second gear; the shaft seat is combined with the connecting seat, and the two sides of the shaft seat have a first shaft hole and a second shaft hole, and the shaft seat has a chamber, and the chamber is communicated with the piston track; the motor seat is connected to the shaft seat in parallel along the extending direction of the pickaxe body; the shaft assembly has a shaft, a piston and a connecting arm, the shaft pivots through the first shaft hole and the second shaft hole, the shaft is connected in series with an eccentric block, and the eccentric block has a center of gravity and a convex shaft on opposite sides of the shaft; the piston is reciprocatingly slidably arranged on the piston track, one end of the connecting arm is pivotally connected to the convex shaft, and the other end is pivotally connected to the piston; the reducer is arranged on the motor seat and has an output shaft; the first gear is combined with the output shaft, and the second gear is combined with the shaft and meshes with the first gear; A motor device, comprising a housing, the housing being combined with the motor seat and arranged in parallel with the shaft seat; a motor body being arranged in the housing, the motor body having a motor shaft, the motor shaft being connected to the reducer; and A holding device is combined with the pickaxe body and has two handles. At least one of the two handles has a trigger. The trigger is used to start the motor body to run.

2. The electric pickaxe according to claim 1, characterized in that: The extending direction of the rotating shaft and the output shaft is perpendicular to the extending direction of the pick body; the eccentric block includes a first eccentric block and a second eccentric block opposite to each other, and one side of the first eccentric block and the second eccentric block respectively has the center of gravity portion, and the convex shaft includes a cylinder portion and a rod portion inserted into the cylinder portion, the cylinder portion is connected to the other side of the first eccentric block, and the rod portion is connected to the other side of the second eccentric block.

3. The electric pickaxe according to claim 2, characterized in that: The outer shell of the motor device is connected to the motor base at one end, and is connected to an electrical box at the other end of the outer shell. A control circuit board is arranged in the electrical box, and the motor body and each trigger are electrically connected to the control circuit board respectively; there is at least one battery socket around the outer shell, and a battery pack can be detachably inserted into each battery socket; each battery pack is electrically connected to the control circuit board, thereby supplying the motor body with the power required for operation.

4. The electric pickaxe according to claim 3, characterized in that: The shell includes two battery sockets around it, and the two battery sockets are formed on the left and right sides of the shell.

5. The electric pickaxe according to claim 3, characterized in that: The motor seat and the rotating shaft seat form a gear box groove on a side away from the motor device, and an outer cover is combined with the gear box groove cover; the reducer, the first gear and the second gear are arranged in the gear box groove.

6. The electric pickaxe according to claim 5, characterized in that: The reducer has a sun gear fixedly mounted on one side of the gear box groove corresponding to the motor seat, and a planetary gear carrier is arranged on the inner side of the sun gear. A plurality of rotatable planetary gears are combined around the planetary gear carrier in a circular and evenly spaced arrangement. The outer sides of the plurality of planetary gears mesh with the sun gear, and the output shaft is connected to the center of the planetary gear carrier. The outer end of the motor shaft has a gear portion, and the gear portion meshes with the inner sides of the plurality of planetary gears, thereby connecting the motor shaft to the reducer.

7. The electric pickaxe according to claim 6, characterized in that: The pick body includes a lower pick body and an upper pick body connected to each other; the connecting seat is formed at one end of the upper pick body away from the lower pick body, and the piston track is formed in the upper pick body; the lower pick body is provided with an insertion hole, and the insertion hole is a straight hole whose extension direction is the same as the extension direction of the pick body.

8. The electric pickaxe according to claim 7, characterized in that: The holding device includes a handle seat, a shock absorbing mechanism and the two handles; the handle seat includes a connecting rod and two side rods connected to the two ends of the connecting rod; the shock absorbing mechanism is connected between the two side rods and the upper pick body; the two handles are combined with the two side rods.

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