Electric hammer with improved hand feel

Abstract

The present application discloses an electric hammer with improved hand feel comfort, and relates to the technical field of electric hammers. The utility model comprises a shell, a motor is provided at the lower end of the shell, a driving gear is fixedly provided at the output end of the motor, an impact mechanism is provided on the outer surface of the driving gear, a rotating mechanism is provided on the outer surface of the driving gear, the impact mechanism comprises an impact gear, an eccentric wheel is fixedly provided at the upper end of the impact gear, an eccentric shaft is fixedly provided at the upper end of the eccentric wheel, a connecting rod is rotatably provided on the outer surface of the eccentric shaft, an impact rod is rotatably provided on one end of the connecting rod, a rotating shaft is provided on the outer surface of the impact rod, a drill rod is slidably provided on the inner surface of the rotating shaft, and a reset plate is fixedly provided on the outer surface of the drill rod. The utility model uses the impact mechanism to ensure that the electric hammer is sufficiently stable when hammering, and uses the rotating mechanism to ensure that the electric hammer can be effectively rotated when hammering.

Description

Technical Field

[0001] The present application relates to the technical field of electric hammers, and in particular to an electric hammer with improved hand feel and comfort. Background Art

[0002] The electric hammer is an electric rotary hammer drill with a safety clutch and a pneumatic hammer mechanism. The electric hammer uses the principle of piston movement to compress the gas to impact the drill bit. It does not require much hand strength and can open 6-100mm holes in hard materials such as concrete, bricks, and stones. The electric hammer has a high efficiency in opening holes in the above materials.

[0003] After checking the announcement number: CN206335525U, an electric hammer is disclosed. This technology discloses "including a gear box, a quick chuck connected to the front end of the gear box, a handle structure connected to the rear end of the gear box, a sub-handle installed at the front of the gear box, and a motor housing located below the rear of the gear box. The bottom surface of the rear of the gear box is connected to the motor housing through an intermediate cover. The handle structure includes a handle body and a handle back cover. The handle body and the handle back cover are connected by a screw. The rear end of the motor housing is connected to the bottom of the handle body and other technical solutions. The electric hammer of the utility model has a simple handle structure. Only one screw is needed to open the handle body and the handle back cover. It is easy to maintain and has a beautiful appearance. The rear end of the gear box is clamped with the upper end of the handle body through a concave-convex structure, and the clamping is more stable, and no fasteners are required for connection. ";

[0004] With respect to the above-mentioned related technologies, the inventors believe that when the electric hammers in the prior art are in use, most of the electric hammers are not stable enough when hammering, which causes the workers to slip easily due to vibration during use, thereby causing injuries. Moreover, when the electric hammers in the prior art are in use, most of the electric hammers have poor rotation effect during hammering, resulting in low hole-opening efficiency of the electric hammers. Utility Model Content

[0005] The purpose of the present application is to provide an electric hammer with improved hand feel comfort, so as to improve the problem that most electric hammers are not stable enough when hammering and most electric hammers have poor rotation effect when hammering.

[0006] The electric hammer provided in this application for improving hand feel comfort adopts the following technical solutions:

[0007] An electric hammer with improved hand feel comfort comprises a shell, a motor is provided at the lower end of the shell, a driving gear is fixedly provided at the output end of the motor, an impact mechanism is provided on the outer surface of the driving gear, a rotating mechanism is provided on the outer surface of the driving gear, the impact mechanism comprises an impact gear, and the outer surface of the impact gear is meshingly connected with the outer surface of the driving gear, an eccentric wheel is fixedly provided at the upper end of the impact gear, an eccentric shaft is fixedly provided at the upper end of the eccentric wheel, a connecting rod is rotatably sleeved on the outer surface of the eccentric shaft, an impact rod is rotatably provided on one end of the connecting rod, a rotating shaft is sleeved on the outer surface of the impact rod, a drill rod is slidably provided on the inner surface of the rotating shaft, a reset plate is fixedly provided on the outer surface of the drill rod, and a reset spring is fixedly provided on one side of the reset plate.

[0008] By adopting the above technical solution, the motor in the support frame at the lower end of the shell is started through the impact mechanism, so that the motor can drive the driving gear to rotate, so that the driving gear can drive the eccentric wheel on the impact gear to rotate, so that the eccentric wheel can drive the connecting rod on the eccentric shaft to reciprocate, so that the connecting rod can drive the impact rod to slide on the inner surface of the rotating shaft, so that the impact rod can drive the drill rod to reciprocate and hammer, and reset through the reset spring on one side of the reset plate, so as to achieve the purpose of sufficient stability of the electric hammer when hammering.

[0009] Optionally, the rotating mechanism includes a rotating gear, and the outer surface of the rotating gear is meshingly connected with the outer surface of the driving gear, a first side gear is fixedly provided on the upper end of the rotating gear, and a second side gear fixedly provided on the outer surface of the rotating shaft for use with the first side gear, a rotating wheel is fixedly provided on one side of the second side gear, and the inner surface of the rotating wheel is fixedly connected to the outer surface of the rotating shaft.

[0010] By adopting the above technical solution, through the rotating mechanism, when the driving gear is rotating, it will drive the rotating gear to rotate, so that the rotating gear can drive the first side gear to rotate, and the first side gear can drive the second side gear to rotate, and the second side gear can cooperate with the rotating wheel to drive the rotating shaft to rotate, and the rotating shaft can drive the drill rod to rotate through the limiting bead, thereby achieving the purpose of the electric hammer being able to rotate effectively when hammering.

[0011] Optionally, a buffer handle is fixedly provided on one side of the shell, and a connecting wire is fixedly provided on the lower end of the buffer handle.

[0012] By adopting the above technical solution, the buffer handle can reduce the vibration amplitude when the electric hammer is hammering, avoid falling off, and can be connected to the power supply through the connecting line.

[0013] Optionally, a fixing frame is sleeved on the outer surface of the shell, and a fixed handle for matching use is provided at the lower end of the fixing frame.

[0014] By adopting the above technical solution, the stability of the shell can be improved by the fixing frame, and the user can hold it stably by fixing the handle.

[0015] Optionally, a support frame is fixedly provided on the outer surface of the motor, and the upper end of the support frame is fixedly connected to the lower end of the shell.

[0016] By adopting the above technical solution, the motor can be fixed at the lower end of the shell through the support frame.

[0017] Optionally, a plurality of limiting beads are movably provided on the inner surface of the rotating shaft, and a plurality of limiting grooves for use in conjunction with the limiting beads are provided on the outer surface of the drill rod.

[0018] By adopting the above technical solution, the drill rod can be limited by sliding in the limiting groove through the limiting beads.

[0019] Optionally, the eccentric shaft is located at an eccentric position of the upper end of the eccentric wheel.

[0020] By adopting the above technical solution, the eccentric shaft can drive the connecting rod to perform reciprocating motion.

[0021] Optionally, a protective shell is rotatably provided on one side of the outer shell, and one side of the protective shell is fixedly connected to one end of the drill rod.

[0022] By adopting the above technical solution, the drill rod can be protected by the protective shell after being connected to the drill bit.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The utility model uses an impact mechanism, so that when a worker uses an electric hammer to drill a hole, the electric hammer can hammer back and forth, thereby improving the stability of the electric hammer when hammering, reducing the risk of the electric hammer falling off when the worker holds it, and thus achieving sufficient stability of the electric hammer when hammering;

[0025] 2. The utility model uses a rotating mechanism, so when a worker uses an electric hammer to drill holes, the electric hammer can drive the drill bit to rotate effectively, thereby improving the efficiency of the electric hammer drilling, so that the electric hammer can effectively rotate when hammering. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model.

[0027] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0028] Figure 3 It is a partial structural cross-sectional schematic diagram of the utility model.

[0029] In the figure, 1. shell; 2. impact mechanism; 3. rotating mechanism; 4. buffer handle; 5. connecting line; 6. fixing frame; 7. fixing handle; 8. supporting frame; 9. motor; 10. driving gear; 20. impact gear; 21. eccentric wheel; 22. eccentric shaft; 23. connecting rod; 24. impact rod; 25. rotating shaft; 26. reset spring; 27. reset plate; 28. protective shell; 29. ​​drill rod; 201. limiting bead; 202. limiting groove; 30. rotating wheel; 31. second side gear; 32. first side gear; 33. rotating gear. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0031] Example 1

[0032] Electric hammer with improved hand feel, refer to Figure 1 and Figure 2 , including a shell 1, a motor 9 is provided at the lower end of the shell 1, a driving gear 10 is fixedly provided at the output end of the motor 9, an impact mechanism 2 is provided on the outer surface of the driving gear 10, a rotating mechanism 3 is provided on the outer surface of the driving gear 10, the impact mechanism 2 includes an impact gear 20, and the outer surface of the impact gear 20 is meshed and connected with the outer surface of the driving gear 10, an eccentric wheel 21 is fixedly provided at the upper end of the impact gear 20, an eccentric shaft 22 is fixedly provided at the upper end of the eccentric wheel 21, a connecting rod 23 is rotatably sleeved on the outer surface of the eccentric shaft 22, an impact rod 24 is rotatably provided at one end of the connecting rod 23, a rotating shaft 25 is sleeved on the outer surface of the impact rod 24, a drilling rod 29 is slidably provided on the inner surface of the rotating shaft 25, and the outer surface of the drilling rod 29 A reset plate 27 is fixedly provided on the surface, and a reset spring 26 is fixedly provided on one side of the reset plate 27. Through the impact mechanism 2, the motor 9 in the support frame 8 at the lower end of the shell 1 is started, so that the motor 9 can drive the driving gear 10 to rotate, so that the driving gear 10 can drive the eccentric wheel 21 on the impact gear 20 to rotate, so that the eccentric wheel 21 can drive the connecting rod 23 on the eccentric shaft 22 to reciprocate, so that the connecting rod 23 can drive the impact rod 24 to slide on the inner surface of the rotating shaft 25, so that the impact rod 24 can drive the drill rod 29 to reciprocate and hammer, and reset by the reset spring 26 on one side of the reset plate 27, so as to achieve the purpose of the electric hammer being sufficiently stable when hammering.

[0033] Reference Figure 1A buffer handle 4 is fixedly provided on one side of the housing 1, and a connecting wire 5 is fixedly provided on the lower end of the buffer handle 4. The buffer handle 4 can reduce the vibration amplitude when the electric hammer is hammering to avoid falling off, and the connecting wire 5 can be connected to a power source.

[0034] Reference Figure 2 The outer surface of the shell 1 is sleeved with a fixing frame 6, and the lower end of the fixing frame 6 is provided with a fixed handle 7 for use therewith. The fixing frame 6 can improve the stability of the shell 1, and the fixed handle 7 can facilitate the user to hold it stably.

[0035] Reference Figure 2 A support frame 8 is fixedly provided on the outer surface of the motor 9, and the upper end of the support frame 8 is fixedly connected to the lower end of the housing 1, so that the motor 9 can be fixed at the lower end of the housing 1 through the support frame 8.

[0036] Reference Figure 3 The inner surface of the rotating shaft 25 is movably provided with a plurality of limiting beads 201, and the outer surface of the drill rod 29 is provided with a plurality of limiting grooves 202 used in conjunction with the limiting beads 201. The drill rod 29 can be limited by sliding in the limiting grooves 202 through the limiting beads 201.

[0037] Reference Figure 3 The eccentric shaft 22 is located at the eccentric position of the upper end of the eccentric wheel 21, so that when the eccentric wheel 21 rotates, the eccentric shaft 22 can drive the connecting rod 23 to reciprocate.

[0038] Reference Figure 3 A protective shell 28 is rotatably provided on one side of the housing 1, and one side of the protective shell 28 is fixedly connected to one end of the drill rod 29, so that after the drill rod 29 is connected to the drill bit, the drill rod 29 can be protected by the protective shell 28.

[0039] The implementation principle of the embodiment of the present application is: through the impact mechanism 2, the motor 9 in the support frame 8 at the lower end of the shell 1 is started, so that the motor 9 can drive the driving gear 10 to rotate, so that the driving gear 10 can drive the eccentric wheel 21 on the impact gear 20 to rotate, so that the eccentric wheel 21 can drive the connecting rod 23 on the eccentric shaft 22 to reciprocate, so that the connecting rod 23 can drive the impact rod 24 to slide on the inner surface of the rotating shaft 25, so that the impact rod 24 can drive the drill rod 29 to reciprocate and hammer, and reset through the reset spring 26 on one side of the reset plate 27, so as to achieve the purpose of the electric hammer being sufficiently stable when hammering.

[0040] Example 2

[0041] The difference between this embodiment and embodiment 1 is that:

[0042] Reference Figure 3The rotating mechanism 3 includes a rotating gear 33, and the outer surface of the rotating gear 33 is meshed with the outer surface of the driving gear 10. A first side gear 32 is fixedly provided on the upper end of the rotating gear 33, and a second side gear 31 used in conjunction with the first side gear 32 is fixedly provided on the outer surface of the rotating shaft 25. A rotating wheel 30 is fixedly provided on one side of the second side gear 31, and the inner surface of the rotating wheel 30 is fixedly connected to the outer surface of the rotating shaft 25. Through the rotating mechanism 3, when the driving gear 10 rotates, the rotating gear 33 is driven to rotate, so that the rotating gear 33 can drive the first side gear 32 to rotate, so that the first side gear 32 can drive the second side gear 31 to rotate, and the second side gear 31 can cooperate with the rotating wheel 30 to drive the rotating shaft 25 to rotate. The rotating shaft 25 can drive the drill rod 29 to rotate through the limiting bead 201, thereby achieving the purpose that the electric hammer can effectively rotate when hammering.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electric hammer with improved hand feel comfort, comprising a housing (1), characterized in that: A motor (9) is provided at the lower end of the housing (1), a driving gear (10) is fixedly provided at the output end of the motor (9), an impact mechanism (2) is provided on the outer surface of the driving gear (10), and a rotating mechanism (3) is provided on the outer surface of the driving gear (10); The impact mechanism (2) comprises an impact gear (20), and the outer surface of the impact gear (20) is meshedly connected with the outer surface of the driving gear (10); an eccentric wheel (21) is fixedly provided at the upper end of the impact gear (20); an eccentric shaft (22) is fixedly provided at the upper end of the eccentric wheel (21); a connecting rod (23) is rotatably sleeved on the outer surface of the eccentric shaft (22); an impact rod (24) is rotatably provided at one end of the connecting rod (23); a rotating shaft (25) is sleeved on the outer surface of the impact rod (24); a drill rod (29) is slidably provided on the inner surface of the rotating shaft (25); a reset plate (27) is fixedly provided on the outer surface of the drill rod (29); a reset spring (26) is fixedly provided on one side of the reset plate (27).

2. The electric hammer with improved hand feel comfort according to claim 1, characterized in that: The rotating mechanism (3) comprises a rotating gear (33), and the outer surface of the rotating gear (33) is meshedly connected with the outer surface of the driving gear (10); a first side gear (32) is fixedly provided on the upper end of the rotating gear (33); a second side gear (31) used in conjunction with the first side gear (32) is fixedly sleeved on the outer surface of the rotating shaft (25); a rotating wheel (30) is fixedly provided on one side of the second side gear (31), and the inner surface of the rotating wheel (30) is fixedly connected with the outer surface of the rotating shaft (25).

3. The electric hammer with improved hand feel comfort according to claim 1, characterized in that: A buffer handle (4) is fixedly provided on one side of the housing (1), and a connecting line (5) is fixedly provided on the lower end of the buffer handle (4).

4. The electric hammer with improved hand feel comfort according to claim 1, characterized in that: The outer surface of the housing (1) is sleeved with a fixing frame (6), and the lower end of the fixing frame (6) is provided with a fixing handle (7) for use with the fixing frame.

5. The electric hammer with improved hand feel comfort according to claim 1, characterized in that: A support frame (8) is fixedly provided on the outer surface of the motor (9), and the upper end of the support frame (8) is fixedly connected to the lower end of the housing (1).

6. The electric hammer with improved hand feeling comfort according to claim 1, characterized in that: The inner surface of the rotating shaft (25) is movably provided with a plurality of limiting beads (201), and the outer surface of the drill rod (29) is provided with a plurality of limiting grooves (202) for use in conjunction with the limiting beads (201).

7. The electric hammer with improved hand feeling comfort according to claim 1, characterized in that: The eccentric shaft (22) is located at the eccentric position of the upper end of the eccentric wheel (21).

8. The electric hammer with improved hand feeling comfort according to claim 1, characterized in that: A protective shell (28) is rotatably provided on one side of the housing (1), and one side of the protective shell (28) is fixedly connected to one end of a drill rod (29).

Images