Electric nail driver power unit

Abstract

The utility model relates to a power device of an electric nail driver, comprising a shell, the inner periphery of which is provided with a through hole along its axial direction, and a coil is provided around the through hole inside the upper shell; a striker, which is made of ferromagnetic material and is slidably arranged in the through hole, and the striker can slide from an initial position to a terminal position after the coil is energized; a striker, which is connected to the first end of the striker; an elastic member, which abuts between the second end of the striker and the end of the shell; the two ends of the through hole respectively form a first mouth and a second mouth, and when the striker is in its initial position, the second end of the striker extends out of the second mouth, and the first end of the striker is located in the through hole and close to the second mouth, and the striker extends out of the first mouth. In the utility model, after the coil is energized, a magnetic field is generated, which drives the striker and the striker to move synchronously, and the striker can strike the nail during the movement, so that the nail enters the substrate to be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of nail drivers, in particular to a power device for an electric nail driver. Background Art

[0002] The nail driver is a common fastening tool in the construction field. It uses blank cartridges, gas or compressed air as power to drive nails into the building. The use of nail drivers for nail fastening technology is an advanced modern fastening technology. Compared with traditional methods such as pre-embedded fixation, hole pouring, bolt connection, welding, etc., it has many advantages. The nail driver has its own energy source, thus getting rid of the burden of wires and air ducts, and is convenient for on-site and high-altitude operations.

[0003] Traditional nailers usually use air compressors to compress air or burn gas to provide power. Among them, air compressors make a lot of noise during operation, and gas has the problem of inconvenient energy acquisition. Therefore, it is necessary to design a nailer power device that uses electrical energy to provide power. Summary of the invention

[0004] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a power device for an electric nail driver, so as to utilize electrical energy to provide power for nailing.

[0005] In order to solve the above technical problems, the utility model provides a power device of an electric nail driver, comprising a shell, the inner circumference of the shell is provided with a through hole along its axial direction, and a coil is provided around the through hole inside the upper shell; a striker rod is made of ferromagnetic material and slidably penetrates the through hole, and the striker rod can slide from an initial position to a terminal position after the coil is energized; a striker pin is connected to the first end of the striker rod; an elastic member abuts between the second end of the striker rod and the end of the shell, and when the coil is de-energized, the striker rod is maintained in its initial position under the action of the elastic member; the two ends of the through hole respectively form a first mouth and a second mouth, and when the striker rod is in its initial position, the second end of the striker rod extends out of the second mouth, and the first end of the striker rod is located in the through hole and close to the second mouth, and the striker pin extends out of the first mouth.

[0006] Preferably, the housing comprises a shell and a coil support which are coaxially arranged in sequence from outside to inside, and the coil is wound around the outer circumference of the coil support.

[0007] Preferably, the coil support comprises a cylinder, both ends of which extend outward to form baffles, and the coil is located between the two baffles.

[0008] Preferably, the striker is made of iron.

[0009] Preferably, the striker rod is in a sleeve shape, an internal thread is provided at a first end of the striker rod, and an external thread matching the internal thread is provided at an outer periphery of the striker pin.

[0010] Preferably, the elastic member is a coil spring.

[0011] Preferably, a boss is protrudingly provided on the outer periphery of the second end of the striker rod, and the elastic member abuts against the boss.

[0012] Preferably, the striker comprises a striking section and a connecting section, the outer circumference of the connecting section is provided with the external thread, and the outer diameter of the connecting section is greater than the outer diameter of the striking section.

[0013] Preferably, the impact section and the connecting section are connected via a transition portion, and the outer peripheral surface of the transition portion is an inwardly concave arc surface.

[0014] Preferably, the coil support also includes a bushing fixedly connected to the inner periphery of the cylinder, and the two ends of the bushing are respectively flush with the end faces of the two baffles. The utility model has the following beneficial effects: in the utility model, after the coil is energized, a magnetic field is generated, the striker is made of ferromagnetic material, and when the coil is not energized, the first end of the striker is located in the through hole and close to the second mouth of the through hole, then when the coil is energized to generate a magnetic field, the striker can slide in the direction of the first mouth under the action of the magnetic field until it moves to its terminal position, during which the striker moves synchronously to strike the nail, providing power to the nail so that the nail enters the matrix to be fixed. In the process of the striker driving the striker to shoot out, the elastic member is compressed and stored, and after the nail shooting action is completed, the striker can be reset to its initial position under the elastic force of the elastic member to wait for the next nail shooting action. It can be seen that the present application uses electrical energy to provide power for nail shooting, without the need for an air compressor and gas, and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a structural schematic diagram of a power device of an electric nail driver according to an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a power device of an electric nail driver according to an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1-shell; 2-coil bracket; 21-baffle; 22-bushing; 3-coil; 4-strike rod; 41-boss; 5-strike pin; 51-strike section; 52-connecting section; 53-transition section; 6-elastic member; 7-first buffer pad; 8-second buffer pad. DETAILED DESCRIPTION

[0020] Here, it should be noted that the functions and methods involved in the present invention are merely conventional adaptive applications of the prior art. Therefore, the improvement of the present invention on the prior art is essentially the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present invention involves some functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present invention is to better illustrate the present invention so as to better understand the present invention.

[0021] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0022] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides a power device for an electric nail driver, including a housing, the housing including a shell 1 and a coil support 2 coaxially arranged from outside to inside, and a coil 3 is wound around the outer circumference of the coil support 2. In this embodiment, the coil support 2 includes a cylinder, both ends of which extend outward to form a baffle 21, and the coil 3 is located between the two baffles 21. In addition, a bushing 22 is fixedly connected to the inner circumference of the cylinder of the coil support 2, and both ends of the bushing 22 are flush with the end surfaces of the two baffles 21, respectively. In this embodiment, the bushing 22 is made of aluminum, which can improve the wear resistance of the coil support 2.

[0024] The inner periphery of the housing is provided with a through hole along the axial direction thereof. The through hole is specifically defined by the inner periphery of the bushing 22 of the coil support 2 , and the coil 3 is surrounded by the outer periphery of the through hole.

[0025] A striker 4 is slidably provided in the through hole, and the striker 4 is made of ferromagnetic material. In this embodiment, the striker 4 is made of iron. A striker 5 is connected to the first end of the striker 4, and an elastic member 6 is sleeved on the outer periphery of the striker 4, and the elastic member 6 abuts between the second end of the striker 4 and the baffle 21.

[0026] Specifically, the striker 4 is sleeve-shaped, with an internal thread at the first end of the striker 4, and an external thread matching the internal thread at the outer periphery of the striker 5. The striker 5 and the striker 4 are connected by threads, which is convenient for disassembly and assembly of the striker 5 and for later replacement.

[0027] Specifically, the elastic member 6 is a coil spring, and a boss 41 is protrudingly provided on the outer periphery of the second end of the striker 4 . The elastic member 6 abuts against the boss 41 . The elastic member 6 is used to drive the striker 4 and the striker 5 to reset.

[0028] In this embodiment, the two ends of the through hole on the inner circumference of the coil support 2 form a first opening and a second opening, respectively, wherein the second opening is arranged close to the elastic member 6. The striker 4 can slide from an initial position to a terminal position after the coil 3 is energized, and when the striker 4 is at its initial position, the second end of the striker 4 extends out of the second opening, and the first end of the striker 4 is located in the through hole and close to the second opening, and the end of the striker 5 away from the striker 4 extends out of the first opening.

[0029] After the coil 3 is energized, a magnetic field is generated. The striker 4 is made of ferromagnetic material and is subject to magnetic attraction in the magnetic field. The striker 4 can slide toward the first mouth under the action of the magnetic attraction until it moves to its end position. During this process, the striker 5 moves synchronously to strike the nail, providing power to the nail so that the nail enters the matrix to be fixed. During the process of the striker 4 driving the striker 5 to shoot, the elastic member 6 is compressed to store force, and after the nail shooting action is completed, the striker 4 can be reset to its initial position under the elastic force of the elastic member 6 and maintained, waiting for the next nail shooting action. It can be seen that the power device of the electric nail driver of this embodiment converts electrical energy into mechanical energy for nail shooting, and the source of the electrical energy can be a battery for easy use.

[0030] Furthermore, the above-mentioned firing pin 5 includes an impact section 51 and a connecting section 52, the outer periphery of the connecting section 52 is provided with the above-mentioned external thread, the outer diameter of the connecting section 52 is larger than the outer diameter of the impact section 51, and the impact section 51 and the connecting section 52 are connected by a transition section 53, and the outer peripheral surface of the transition section 53 is a concave arc surface.

[0031] When the electric nail driver power device of the present application is applied to a nail gun, a buffer pad needs to be provided inside the nail gun to prevent the striker 4 and the striker 5 from rigidly colliding with the gun body.

[0032] Specifically, two buffer pads can be provided in the nail gun, namely, a first buffer pad 7 and a second buffer pad 8, and the first buffer pad 7 and the second buffer pad 8 are fixed relative to the outer shell of the gun body. The first buffer pad 7 is sleeved on the outer periphery of the striking section 51 of the striker 5 to limit the maximum extension length of the striker 5, that is, to limit the terminal position of the striker 4. When the striker 4 is at its terminal position, the transition portion 53 abuts against the first buffer pad 7 to limit the position, and at this time, the elastic member 6 is compressed to the shortest length; and when the elastic member 6 is at the maximum length, the striker 4 abuts against the second buffer pad 8 to limit the position, and the second buffer pad 8 is used to limit the maximum retracted length of the striker 5, that is, at this time, the striker 4 is at its initial position.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A power device for an electric nail driver, characterized in that: include: A shell, wherein a through hole is provided on the inner periphery of the shell along the axial direction thereof, and a coil is provided inside the shell around the through hole; A striker rod is made of ferromagnetic material and is slidably disposed in the through hole. The striker rod can slide from an initial position to a terminal position after the coil is energized; a striker connected to the first end of the striker rod; an elastic member abutting between the second end of the striker and the end of the housing, wherein when the coil is powered off, the striker is kept at its initial position under the action of the elastic member; The two ends of the through hole form a first mouth and a second mouth respectively. When the striker is at its initial position, the second end of the striker extends out of the second mouth, and the first end of the striker is located in the through hole and close to the second mouth, and the striker extends out of the first mouth.

2. The power device of the electric nail driver according to claim 1, characterized in that: The shell comprises a shell and a coil support which are coaxially arranged in sequence from outside to inside, and the coil is wound around the outer circumference of the coil support.

3. The power device of the electric nail driver according to claim 2, characterized in that: The coil support comprises a cylinder, two ends of which extend outwards to form baffles, and the coil is located between the two baffles.

4. The power device of the electric nail driver according to claim 1, characterized in that: The striker is made of iron.

5. The power device of the electric nail driver according to claim 1, characterized in that: The striker rod is in a sleeve shape, an internal thread is arranged at a first end of the striker rod, and an external thread matching the internal thread is arranged at an outer periphery of the striker pin.

6. The power device of the electric nail driver according to claim 1, characterized in that: The elastic member is a coil spring.

7. The power device of the electric nail driver according to claim 1, characterized in that: A boss is protrudingly provided on the outer periphery of the second end of the striker rod, and the elastic member abuts against the boss.

8. The power device of the electric nail driver according to claim 5, characterized in that: The striker includes a striking section and a connecting section. The outer circumference of the connecting section is provided with the external thread. The outer diameter of the connecting section is greater than the outer diameter of the striking section.

9. The power device of the electric nail driver according to claim 8, characterized in that: The impact section and the connection section are connected via a transition portion, and the outer peripheral surface of the transition portion is an inwardly concave arc surface.

10. The power device of the electric nail driver according to claim 3, characterized in that: The coil support also includes a bushing fixedly connected to the periphery of the cylinder body, and two ends of the bushing are respectively flush with the end surfaces of the two baffles.

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