Use method of special curved surface flywheel in electric hammer tool

Abstract

The invention relates to the technical field of electric hammers, and discloses a using method of a special curved surface flywheel in an electric hammer tool. A curved flywheel; the curved surface flywheel comprises a pedestal, one side of the pedestal is connected with a boss through a connecting seat, the surface of the boss is provided with a concave-convex curved surface, and the curved surface flywheel is arranged at a transmission part in the electric hammer body. According to the use method of the flywheel with the special curved surface in the electric hammer tool, the arranged flywheel with the special structure can provide smooth and stable piston motion for the electric hammer in use, a traditional mechanical piston structure is simplified, the flywheel with the special curved surface is made of high-strength plastic, the weight is reduced, noise and vibration are reduced, manufacturing is easy, maintenance is convenient, and the service life of the flywheel with the special curved surface is prolonged. According to the flywheel structure, rotary motion is utilized, direct contact is converted into linear motion, transmission structures can be effectively reduced, friction is reduced, meanwhile, structural abrasion of all components can be reduced, and therefore the service life of the electric hammer is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of electric hammers, and in particular to a method for using a special curved flywheel in an electric hammer tool. Background Art

[0002] Common multifunctional electric hammers typically possess multiple functions, such as drilling, hammer drilling, and hammering, and can be switched between them according to different operational requirements. In existing technologies, electric hammers primarily utilize a motor to drive the spindle, which in turn drives the drill bit, to achieve the electric drill function. A cylinder is added to the spindle in conjunction with a rocker bearing, which reciprocates the hammering element connected to the rocker bearing to achieve the electric hammer function. However, this structure is complex, and the single-knob switching scheme typically requires a complex shift fork, complicating the electric hammer's function switching scheme. Therefore, it is necessary to design an electric hammer with a simple structure and convenient function switching.

[0003] There are many types of electric hammer transmission structures at present; For example, the crank-connecting rod mechanism: the electric motor drives the eccentric connecting rod through the gears, so that the compressed piston reciprocates in the cylinder to generate impact force; while the piston-connecting rod crankshaft structure has complex structure, many parts, is relatively bulky, and the rotation of the crankshaft is prone to vibration, high cost, and difficult maintenance.

[0004] Rocker Bearing and Cylinder: The rocker bearing rotates, driving the impact piston in the cylinder, creating the hammering action. Some designs utilize a dovetail groove helical coupling to improve transmission stability. The rocker bearing structure requires high precision, is difficult to manufacture, and is costly. It also lacks strength, making it generally suitable for use on 2kg electric hammers.

[0005] The above technical solutions all realize the impact operation of the electric hammer through the transmission conversion of multiple structural parts. The transmission structure is relatively complex, and accompanied by the high-frequency movement between the contact parts, the crank connecting rod and the rocker arm structure have large friction, which will increase the internal wear and heat generation inside the electric hammer, thereby affecting the transmission efficiency and safety of the electric hammer. Therefore, a method for using a special curved flywheel in the electric hammer tool is proposed to solve the above problems. Summary of the Invention

[0006] (1) Technical problems solved: In response to the shortcomings of the existing technology, the present invention provides a method for using a special curved flywheel in an electric hammer tool, which solves the problems in the existing technology of high precision requirements for the electric hammer rocker bearing, high manufacturing costs, and insufficient strength.

[0007] (II) Technical Solution: To achieve the above-mentioned objectives, the present invention provides the following technical solution: a method for using a special curved flywheel in an electric hammer tool, comprising an electric hammer body; a curved flywheel; the curved flywheel comprising a pedestal, one side of the pedestal being connected to a boss via a connecting seat, the surface of the boss being provided with a concave-convex curved surface, the curved flywheel being provided at a transmission portion within the electric hammer body; the electric hammer body comprising a power supply component, a transmission component, a moving component, and a workpiece; The following usage steps are also included: Step 1: Install the curved flywheel on the transmission part inside the hammer body; Step 2: Connect the transmission, and convert the electricity into mechanical power by controlling the power supply of the electric hammer body, and transmit the power to the curved flywheel through the transmission part, thereby driving the rotation of the curved flywheel; Step 3: The trajectory is concave and convex in a circular transmission, and the moving part will roll in a circle on the unique concave and convex surface set on the curved flywheel. The "concave" and "convex" positions of the concave and convex surface are used to control the moving part to achieve piston motion. Step 4: Reciprocating work, when the boss rotates one circle each time, it will drive the moving parts to form two piston work; Step 5: Workmanship, using the high-frequency movement of the workpiece, the workpiece is brought into contact with the work surface to achieve high-frequency stability workmanship.

[0008] Preferably, the connecting seat is provided with two concave positions and two convex positions, the base is synchronously provided with grooves and convex grooves matching the two concave positions and the two convex positions, and the moving part is in contact with and connected to the concave and convex surfaces.

[0009] Preferably, the moving part includes a cylinder, a piston is provided in the cylinder, a bearing is provided inside the piston, the surface of the bearing is rotatably connected to a cylindrical pin, the cylindrical pin is connected to the piston, the surface of the bearing is in contact with the concave and convex surface, and the bottom of the cylindrical pin passes through the piston and extends between the base and the boss.

[0010] Preferably, the curved flywheel is made of high-strength plastic.

[0011] Preferably, the power supply unit includes a battery and a motor, the battery is electrically connected to the motor via a wire, and the output shaft of the motor is connected to the transmission unit.

[0012] Preferably, the transmission member includes a rotor, the surface of the rotor is meshed with a large gear via a gear, and the large gear is connected to a curved flywheel.

[0013] Preferably, the workpiece includes a gear set, the gear set is connected to the curved flywheel through a shaft, the surface of the gear set is connected to the cylinder through a gear, and the left end of the cylinder is connected to the impact part.

[0014] Preferably, the ratio of the concave-convex longitudinal depth of the concave-convex surface to the length of the curved flywheel is 1:5.

[0015] Preferably, a lubricating part is provided on the electric hammer body, and the lubricating part includes a bottle body, the bottle body is threadedly connected to the electric hammer body, and lubricating oil is provided in the bottle body, and a dropper is provided at the outlet of the bottle body, and the dropper is located directly above the curved flywheel.

[0016] (III) Beneficial effects: Compared with the prior art, the present invention provides a method for using a special curved flywheel in an electric hammer tool, which has the following beneficial effects: 1. The method of using the special curved flywheel in the electric hammer tool is that the specially structured flywheel can provide a smoother and more stable piston motion when the electric hammer is used, which simplifies the traditional mechanical piston structure. The special curved flywheel is made of high-strength plastic, which reduces weight, reduces noise and vibration, is easy to manufacture and convenient to maintain. The entire curved flywheel adopts a double concave and double convex structure, which can drive the electric hammer to perform two piston impact movements for each rotation of the flywheel. Therefore, by utilizing the characteristics of this structure, the impact frequency of the electric hammer can be directly increased at the same speed, and the workmanship effect is better. In addition, the flywheel structure uses rotational motion to directly form contact and convert it into linear motion, which can effectively reduce the transmission structure, reduce friction, and reduce the structural wear of each component, thereby increasing the service life of the electric hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the electric hammer body proposed in the present invention; Figure 2 This is a schematic diagram of the connection position transmission of the curved flywheel proposed in the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the electric hammer body proposed in the present invention; Figure 4 Schematic diagram of the curved flywheel structure proposed by the present invention In the figure: 1. Cylinder; 2. Piston; 3. Bearing; 4. Cylindrical pin; 5. Gasket; 6. Rotor; 7. Large gear; 8. Curved flywheel; 81. Base; 82. Connecting seat; 83. Boss; 9. Concave and convex curved surface. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1-4 A method for using a special curved flywheel in an electric hammer tool includes an electric hammer body; a curved flywheel 8; the curved flywheel 8 includes a base 81, one side of the base 81 is connected to a boss 83 through a connecting seat 82, the surface of the boss 83 is provided with a concave and convex curved surface 9, and the curved flywheel 8 is arranged at the transmission part inside the electric hammer body; the electric hammer body includes a power supply part, a transmission part, a moving part and a workpiece.

[0020] The steps for using the curved flywheel 8 in an electric hammer are as follows: Step 1: Install the curved flywheel 8 on the transmission part inside the electric hammer body; and the outside of the curved flywheel 8 is connected to the electric hammer body through a bearing part.

[0021] Step 2: Connect the transmission. By controlling the power supply of the electric hammer body, the electricity is converted into mechanical power, which is transmitted to the curved flywheel 8 through the transmission component, thereby driving the rotation of the curved flywheel 8. When the electric hammer is started, the motor rotates, which will control the rotation of the rotor 6, and then drive the large gear 7 to rotate through the meshing of the gears. The large gear 7 will synchronously drive the curved flywheel 8 to rotate. The speed ratio of the gear on the rotor 6 and the large gear 7 is 1:4, which can more smoothly drive the large gear 7 to rotate, thereby driving the rotation of the curved flywheel 8.

[0022] Step three: The trajectory is concave and convex in a circular transmission, and the moving parts will roll in a circle on the unique concave and convex surface 9 provided on the curved flywheel 8. The "concave positions" and "convex positions" of the concave and convex surface 9 are used to control the moving parts to realize piston motion. When the curved flywheel 8 rotates, the bearing 3 rolls on the concave and convex surface 9 to realize the reciprocating left and right working of the piston 2. This technical solution directly changes the impact process of the electric hammer, and converts the traditional crank-connecting rod mechanism or rocker bearing structure into a flywheel-type piston motion, which greatly reduces the number of internal structural parts, effectively improves the transmission efficiency, reduces the transmission friction generated by multiple parts, and the speed resistance, and utilizes the curved and smooth structure of the curved flywheel 8 to realize direct transmission of the piston 2 and reduce transmission wear.

[0023] Step 4: Reciprocating work, when the boss 83 rotates one circle each time, it will drive the moving parts to form two piston work; and the entire curved flywheel adopts a double concave and double convex structure, which can drive the electric hammer to perform two piston impact movements under the condition that the flywheel rotates one circle. Therefore, by utilizing the characteristics of this structure, the impact frequency of the electric hammer can be directly increased at the same speed, and the workmanship effect is better. Step 5: Workmanship, using the high-frequency movement of the workpiece, the workpiece is brought into contact with the work surface to achieve high-frequency stability workmanship.

[0024] In this embodiment, the connecting seat 82 is provided with two concave positions and two convex positions, and the base 81 is simultaneously provided with a groove and a convex groove that match the two concave positions and the two convex positions, so that the moving part is in contact with the concave and convex curved surface. The entire curved flywheel 8 is divided into a dual structure of the base 81 and the connecting seat 82. The use of the mutually matching grooves and convex grooves can effectively provide movement space for the bearing 3 so that it does not cause certain interference, maintaining the stable operation and rotation of the curved flywheel 8. In addition, the gasket 5 is provided above and below the bearing 3 and the cylindrical pin 4. The provision of the gasket 5 can prevent the bearing from directly contacting the piston 2 from above and below, and can better ensure the movement position of the bearing 3, so that it will not jitter with high-frequency movement, and ultimately improve the operation and rotation stability of the bearing 3.

[0025] Furthermore, the moving part includes a cylinder 1, which contains a piston 2. A bearing 3 is disposed within the piston 2. A cylindrical pin 4 is rotatably connected to the surface of the bearing 3. The cylindrical pin 4 is connected to the piston 2. The surface of the bearing 3 is in contact with the concave-convex curved surface 9. The bottom of the cylindrical pin 4 passes through the piston 2 and extends between the base 81 and the boss 83. When the curved flywheel 8 rotates, it will drive the bearing 3 to move laterally on the concave-convex curved surface 9 of the curved flywheel 8. The bearing 3, in turn, drives the piston 2 to move left and right through the connection with the cylindrical pin 4. The movement of the piston 2 on the cylinder 1 will synchronously drive the impact part to impact the workstation, thereby completing the work. This technical solution directly changes the impact process of the electric hammer, converting the traditional crank-connecting rod mechanism or rocker bearing structure into a flywheel piston motion, which greatly reduces the number of internal structural parts, effectively improves the transmission efficiency, reduces the transmission friction and speed resistance generated by multiple parts, and uses the curved and smooth structure of the curved flywheel 8 to achieve direct transmission to the piston 2, reducing transmission wear. In addition, the entire transmission structure relies on the transmission on the curved surface, so the impact vibration caused is very small. Furthermore, the curved flywheel 8 is made of high-strength plastic. The power supply includes a battery and a motor. The battery is electrically connected to the motor via wires, and the motor's output shaft is connected to the transmission element. The special curved flywheel is made of high-strength plastic, which reduces weight, noise, and vibration, making it easy to manufacture and maintain. Because the contact between metal parts inevitably involves installation clearance, which can cause collisions and noise, high-strength plastic does not. Due to its inherent plastic properties, the noise generated by collisions is minimal. Furthermore, the springs installed throughout the cylinder 1 maintain a constant rightward elastic thrust on the piston 2, which in turn abuts against the curved flywheel 8. This gap is squeezed out by the elastic force, and the bearing 3 can only roll on the curved structure according to the curvature of the surface, resulting in relatively low overall noise and vibration.

[0026] In addition, the transmission component includes a rotor 6, the surface of which is meshed with a large gear 7 via gears, and the large gear 7 is connected to a curved flywheel 8. When the motor rotates, it will control the rotation of the rotor 6, which in turn drives the large gear 7 to rotate through the meshing of the gears. The large gear 7 then synchronously drives the curved flywheel 8 to rotate. Through the transmission component, the power of the motor is transmitted to the curved flywheel 8. The rotational motion of the curved flywheel 8 is used to convert the rotation into lateral piston motion, providing a certain power source for the work of the electric hammer.

[0027] In addition, the workpiece includes a gear set, which is connected to the curved flywheel 8 via a shaft. The surface of the gear set is connected to the cylinder 1 via a gear. The left end of the cylinder 1 is connected to the impact part. The gear set can drive the rotation of the cylinder 1 under the condition of the rotation of the curved flywheel 8, and then drive the rotation of the impact part. Therefore, the entire impact part can achieve piston-like motion and high-speed rotation, improving workmanship.

[0028] It is worth noting that the ratio of the longitudinal depth of the concave-convex surface 9 to the length of the curved flywheel 8 is 1:5. Because the structural strength of the curved flywheel 8 must be guaranteed, the depth of the concave-convex position cannot be too large. Therefore, the 1:5 ratio is set to improve the structural strength of the curved flywheel 8, increase the contact force, and indirectly increase the service life of the electric hammer and the single operation time.

[0029] It is worth noting that a lubricating part is provided on the electric hammer body, and the lubricating part includes a bottle body, which is threadedly connected to the electric hammer body, and lubricating oil is provided in the bottle body. A dropper is provided at the outlet of the bottle body, and the dropper is located directly above the curved flywheel 8. Through the provided lubricating oil, when the electric hammer needs lubrication, the lubricating liquid inside can be dripped onto the curved flywheel 8 through the dropper by manually squeezing the bottle body, thereby achieving lubrication of the contact surface and lubrication of the bearing 3 without disassembling the machine, thereby providing stronger stability for the overall operation of the electric hammer. Because the electric hammer may be used for a long time at a time under the use of the operator, the bearing 3 rolls at a high frequency at the curved surface position, which may cause a certain degree of heat and wear. Therefore, at this time, the lubricating oil can be squeezed into the bearing 3 by manual squeezing, thereby achieving non-stop lubrication of the electric hammer.

[0030] Working principle: Check the tool's condition and confirm that the power cord / battery is intact (corded hammers require a ground wire). Check the drill bit holder for looseness and the impact mechanism for any unusual noises. Ensure the switch is flexible and the speed and direction control functions properly. Select the appropriate drill bit, choosing a carbide drill bit (for concrete) or an SDS-plus / SDS-max drill bit depending on the material. The drill bit diameter must not exceed the maximum calibrated value for the hammer, such as Φ20mm. Wear protective equipment: a dust mask, goggles, noise-canceling earplugs, and non-slip gloves. Avoid loose clothing from being caught in the tool. Install the drill bit: With the power off, pull out the holder sleeve and insert the drill bit into the slot to lock it in place. Manually rotate the drill bit to confirm it is not shaking (a "click" sound should be heard for SDS systems). Use a center punch to mark the wall to prevent the drill bit from slipping. Start the hammer and hold it with both hands: the main handle and the auxiliary handle, if available. Align the drill bit vertically with the drill point. First, lightly press the switch and let it idle for 1-2 seconds to confirm there is no abnormal vibration. Initially, start the drill at low speed and apply gentle downward pressure to engage the material. During the drilling phase, apply consistent axial pressure to avoid lateral swing. Drilling technique: Drill in sections, briefly retracting after every 10-15mm of drilling to remove chips. The core of the electric hammer is the impact mechanism, responsible for converting rotational motion into hammering force. This technical solution replaces the traditional impact mechanism with a flywheel-type structure. When the hammer is turned on, the motor rotates, controlling the rotation of the rotor 6. This, in turn, drives the large gear 7 through meshing gears. This in turn drives the curved flywheel 8. As the curved flywheel 8 rotates, it causes the bearing 3 to engage the concave and convex surface 9 of the flywheel 8 in lateral contact motion. This, in turn, drives the piston 2 left and right through its connection with the cylindrical pin 4. The movement of the piston 2 within the cylinder 1 simultaneously drives the impact member to strike the workpiece, completing the work. This technical solution directly changes the impact process of the electric hammer, transforming the traditional crank-connecting rod mechanism or rocker bearing structure into a flywheel-type piston motion. This significantly reduces the number of internal structural components, effectively improving transmission efficiency, reducing transmission friction and speed resistance generated by multiple parts, and utilizing the smooth curved surface structure of the curved flywheel 8 to achieve direct transmission of the piston 2, reducing transmission wear. Furthermore, the entire transmission structure relies on the curved surface for transmission, so the impact vibration caused is very small. Because the curved flywheel 8 is made of high-strength plastic, the noise of the electric hammer is also reduced. At the same time, the rotational force generated by the entire motor is directly transmitted to the curved flywheel 8, so there is basically no transmission loss. Because the curved surface structure gradually rolls to the convex point through the bearing 3, there is no eccentric swing during the entire process. The overall controllability and stability of the electric hammer are excellent, and it is suitable for a variety of working conditions.

[0031] In summary: The use of a special structure flywheel can provide a smoother and more stable piston movement for the electric hammer, simplifying the traditional mechanical piston structure. The special curved flywheel is made of high-strength plastic, which reduces weight, reduces noise and vibration, is easy to manufacture and maintain, and the entire curved flywheel adopts a double concave and double convex structure, which can drive the electric hammer to perform two piston impact movements for each rotation of the flywheel. Therefore, by utilizing the characteristics of this structure, the impact frequency of the electric hammer can be directly increased at the same speed, and the workmanship effect is better. In addition, the flywheel structure uses rotational motion to directly form contact and convert it into linear motion, which can effectively reduce the transmission structure, reduce friction, and reduce the structural wear of each component, thereby increasing the service life of the electric hammer.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A method for using a special curved flywheel in an electric hammer tool, characterized in that: include: Electric hammer body; curved flywheel (8); The curved flywheel (8) includes a pedestal (81), one side of the pedestal (81) is connected to a boss (83) via a connecting seat (82), a surface of the boss (83) is provided with a concave-convex curved surface (9), and the curved flywheel (8) is provided at a transmission portion inside the electric hammer body; The electric hammer body includes a power supply part, a transmission part, a moving part and a workpiece; The following usage steps are also included: Step 1: Install the curved flywheel (8) on the transmission part inside the electric hammer body; Step 2: Connect the transmission, and convert the electricity into mechanical power by controlling the power supply of the electric hammer body, and transmit the power to the curved flywheel (8) through the transmission part, thereby driving the curved flywheel (8) to rotate; Step 3: The trajectory is concave-convex cyclically transmitted, and the moving part will perform circular rolling on the unique concave-convex surface (9) provided on the curved flywheel (8), and the "concave position" and "convex position" of the concave-convex surface (9) are used to control the moving part to realize piston motion; Step 4: reciprocating work, when the boss (83) rotates one circle each time, it will drive the moving parts to form two piston work; Step 5: Workmanship, using the high-frequency movement of the workpiece, the workpiece is brought into contact with the work surface to achieve high-frequency stability workmanship.

2. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The connecting seat (82) is provided with two concave positions and two convex positions, and the base (81) is synchronously provided with a groove and a convex groove that match the two concave positions and the two convex positions, and the moving part is in contact with the concave and convex curved surface (9).

3. The method for using a special curved flywheel in an electric hammer tool according to claim 2, characterized in that: The moving part includes a cylinder (1), a piston (2) is provided in the cylinder (1), a bearing (3) is provided inside the piston (2), a cylindrical pin (4) is rotatably connected to the surface of the bearing (3), the cylindrical pin (4) is connected to the piston (2), the surface of the bearing (3) is in contact with the concave-convex surface (9), and the bottom of the cylindrical pin (4) passes through the piston (2) and extends between the pedestal (81) and the boss (83).

4. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The material of the curved flywheel (8) is composed of high-strength plastic.

5. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The power supply unit includes a battery and a motor. The battery is electrically connected to the motor through a wire, and the output shaft of the motor is connected to the transmission unit.

6. The method for using a special curved flywheel in an electric hammer tool according to claim 5, characterized in that: The transmission component comprises a rotor (6), the surface of the rotor (6) is meshed with a large gear (7) via a gear, and the large gear (7) is connected to a curved flywheel (8).

7. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The workpiece includes a gear set, the gear set is connected to a curved flywheel (8) via a shaft, the surface of the gear set (8) is connected to a cylinder (1) via a gear, and the left end of the cylinder (1) is connected to a collision part.

8. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The ratio of the concave-convex longitudinal depth of the concave-convex curved surface (9) to the length of the curved flywheel (8) is 1:

5.

9. The method for using a special curved flywheel in an electric hammer tool according to claim 1, characterized in that: The electric hammer body is provided with a lubricating part, the lubricating part includes a bottle body, the bottle body is threadedly connected to the electric hammer body, and lubricating oil is provided in the bottle body, and a dropper is provided at the outlet of the bottle body, and the dropper is located directly above the curved flywheel (8).

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