The present invention relates to a power tool, and in particular to a hybrid nail gun.
A nail gun is a product of the modern nail fastening technology, can shoot nails, and belongs to the direct consolidation technology. It is a necessary hand-operated tool for carpentry, building construction, and so on. The nail gun itself contains a mechanism that can produce explosive thrust to directly shoot a fastening nail, thereby firmly connecting a substrate and a member that needs to be fixed, such as a door, a window, an insulation board, a soundproof layer, a decoration, a pipeline, a steel member, and a wooden article.
In the prior art, there are a variety of non-human-driven nail gun products, and the most common nail gun driving modes are electric and pneumatic.
A pneumatic nail gun has the advantages of safety, sufficient power, fast speed, and high efficiency. Moreover, the pneumatic nail gun consumes less energy, and has a relatively simple structure and the low manufacturing cost. Therefore, pneumatic nail guns are mostly selected for use in processing environments of factories. However, the pneumatic nail gun has very high requirements for sites, and must be externally connected to a pneumatic source. Moreover, the pneumatic source and a pipeline path are usually determined at the time of site decoration and cannot be changed at will.
Therefore, the working position of the pneumatic nail gun cannot be changed at will. In some solutions, a portable pneumatic source is used, so that the working position of the pneumatic nail gun can be flexibly selected, but the portable pneumatic source cannot support a long enough working time.
An electric nail gun is another common solution. Compared with the pneumatic source, a power source is much simpler to obtain and connect. Therefore, the working position of the electric nail gun is very flexible. In addition, an electric nail gun with a rechargeable battery can be carried for use, and can still be used normally in an application scenario without a power source. This is very convenient. However, the electric nail gun also has certain disadvantages. An electric motor is likely to heat up when it is working, and long-time use will affect the life of the electric motor. Therefore, a single working time should not be too long, and the electric motor needs to rest at regular intervals. Consequently, the work efficiency is reduced. If different electric nail guns are prepared or a nail gun is kept in a working state for a long time to increase the work efficiency, equipment costs will be increased, resulting in the need to prepare a plurality of nail guns or frequently maintain and replace electric motors.
The pneumatic nail gun and the electric nail gun have their own advantages, but also have their own disadvantages. Therefore, users need to select proper tools in different use scenarios. However, cost-conscious users, especially personal users, cannot be equipped with various types of nail guns, so it is difficult to make a choice. If there is a nail gun that can flexibly adapt to various use scenarios without the need to change different types of nail guns for different scenarios, it will become a good choice for users.
Therefore, those skilled in the art devote themselves to developing a hybrid nail gun to solve the technical problems existing in the prior art. This hybrid nail gun can be driven by either a pneumatic source or a power source, and therefore can exploit the advantages of pneumatic and electric nail guns in different application scenarios without the need to pay the cost of two types of nail guns.
In view of the above disadvantages of the prior art, the technical problem to be solved by the present invention is how to use one nail gun to flexibly adapt to a variety of different application scenarios to exploit the advantages of both pneumatic and electric nail guns.
To solve the above technical problem, the present invention provides a hybrid nail gun, comprising a power component and a drive component, the power component being driven by the drive component, characterized in that the drive component comprises a gas driven device and an electric driven device, the gas driven device comprises a gas source connection port and a pneumatic motor, the electric driven device comprises a power source connection port and an electric motor, and the pneumatic motor and the electric motor are connected in series.
Further, a clutch component is provided between the pneumatic motor and the electric motor, and the clutch component comprises a clutch control member.
Further, the clutch component comprises the clutch control member configured to control the separation and cooperation between the pneumatic motor and a transmission shaft of the electric motor.
Further, the drive component further comprises a reduction box, and an input end of the reduction box is connected to an output shaft of the electric motor, or to an output shaft of the pneumatic motor.
Further, the drive component further comprises an output member provided at an output part of the reduction box, and the output member is brought into contact with the power component and drives the power component to move.
Further, an output part of the gas driven device is connected to an input part of the electric driven device.
Further, an output part of the electric driven device is connected to an input part of the gas driven device.
Further, the output member is a cam.
Further, the power component comprises a fixed shaft, a power spring, and a slider, the power spring is sleeved on the fixed shaft, one end of the power spring is connected to the fixed shaft, and the other end of the power spring is connected to the slider.
Further, the cam is configured to rotate under the drive of the drive component, to drive the slider to slide along the fixed shaft, such that the power spring is in a compressed state.
Further, the slider is provided with a recessed opening configured to enable the cam to be separated from the slider, so as to release the power spring from the compressed state.
Further, the power component comprises a shaft rod, and a plurality of ribs are provided on the shaft rod.
Further, a plurality of cam teeth are provided on the cam, the cam is brought into contact with the ribs via the cam teeth, and the cam is configured to rotate under the drive of the drive component, to drive the shaft rod to move through acting forces of the cam teeth on the ribs.
Further, a toothless part is provided on the cam, and the toothless part is configured such that during the rotation of the cam, the rib loses support from the cam tooth when the toothless part moves to the position of the rib, thereby releasing the shaft rod.
Further, a nail gun housing and a magazine are further comprised, wherein the power part, the drive part, and the magazine are all fixed on the nail gun housing, the magazine comprises a nailing opening, a fastening nail in the magazine is pushed out of the magazine through the nailing opening under an acting force of the slider.
Further, the gas driven device comprises a gas source connection port and a gas cylinder, and the electric driven device comprises a power source connection port and an electric inflation pump.
Further, the gas source connection port is in communication with the gas cylinder, the electric inflation pump is in communication with the gas cylinder, a first one-way valve is provided at a joint part of the gas source connection port and the gas cylinder, and a second one-way valve is provided at a joint part of the electric inflation pump and the gas cylinder.
Further, the first one-way valve is configured such that gas is capable of entering the gas cylinder from the gas source connection port but is not capable of returning to the gas source connection port from the gas cylinder.
Further, the second one-way valve is configured such that gas is capable of entering the gas cylinder from the electric inflation pump but is not capable of returning to the electric inflation pump from the gas cylinder.
Further, the first one-way valve and the second one-way valve have the same structure, comprising a gas valve cavity, a one-way valve spring, and a one-way valve ball; the gas valve cavity is shaped to form cylinders with unequal diameters; a diameter of the gas valve cavity at a non-ventilation end is smaller than a diameter thereof at a ventilation side; the one-way valve spring is provided at the ventilation end of the gas valve cavity; the one-way valve ball is provided at the non-ventilation end of the gas valve cavity; and a diameter of the one-way valve ball is greater than the diameter of the gas valve cavity at the non-ventilation end.
Compared with the prior art, the present invention has at least the following technical effects:
1. A pneumatic source can be used for driving, so that the present invention has low energy consumption, a long working time, and high efficiency in a site with a pneumatic source.
2. A power source can be used for driving, so that the present invention can be used as an electric nail gun in a site without a pneumatic source, thereby breaking through the limitation of the pneumatic source and being able to be carried for use flexibly.
3. In the present invention, an electric inflation pump may be provided, thereby not only avoiding the dependence on the pneumatic source but also breaking through the limitation of the working time of the electric motor.
4. In the present invention, one nail gun is used to flexibly adapt to various application scenarios without the need to pay the cost of two nail guns, so that the cost is low.
The concept, specific structure and resulting technical effects of the present invention are further described below in conjunction with the drawings to fully understand the object, features, and effects of the present invention.
In the figures, 1—nail gun housing, 2—power component, 21—fixed shaft, 22—power spring, 23—slider, 231—recessed opening, 26—shaft rod, 27—toothed cam, 28—rib, 271—cam tooth, 3—drive component, 31—pneumatic motor, 32—electric motor, 33—linkage spring, 34—slot, 35—clutch component, 36—clutch switch, 37—reduction box, 38—cam, 39—fastening pin, 310—gas source connection port, 311—pneumatic motor housing, 312—pneumatic motor bearing, 313—electric inflation pump, 314—inflation pump switch, 315—first one-way valve, 3151—one-way valve spring, 3152—one-way valve ball, 316—second one-way valve, 4—magazine, 41—nailing opening, 5—control component, 51—button, 52—electric switch, 53—gas valve switch, 531—gas valve switch inlet, 532—gas valve switch outlet, and 54—button return spring.
Preferred embodiments of the present invention are described below with reference to the drawings of the description to make the technical contents clearer and easier to understand. The present invention can be embodied in various forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.
In the drawings, the same reference numeral indicates components having the same structure, and similar reference numerals indicate components having similar structures or functions throughout. The size and thickness of each component shown in the figures are shown arbitrarily, and the present invention does not define the size and thickness of each component. In order to make the illustration clearer, the thickness of the component in some places of the figures is appropriately exaggerated.
An “upward” direction mentioned in the present invention specifically indicates a direction opposite to the natural gravity when a magazine 4 of the embodiments is placed at a bottom end of a device and the magazine 4 is placed in a horizontal direction. The “upward” direction may vary with placement angles and postures of a nail gun.
As shown in
In this embodiment, in a scenario where there is a gas source, the pneumatic motor 31 provides a driving force to drive the electric motor 32 to rotate under the action of the clutch component 35, thereby outputting power to the reduction box 37. The electric motor 32 generates power when there is no gas source or when it is inconvenient to connect to a gas source. A power source connection port is provided on the nail gun housing 1 to provide energy input for the electric motor 32. In this case, to prevent the pneumatic motor 31 that loses power from causing additional resistance to the electric motor 32, the clutch switch 36 can be toggled, to separate the electric motor 32 from the pneumatic motor 31 by means of the clutch component 35. The electric motor 32 independently outputs power to the reduction box 37. Therefore, this embodiment can be applied to various work scenarios without the need to prepare other types of nail guns.
In this embodiment, the output part of the pneumatic motor 31 is connected to the input part of the electric motor 32 to achieve the effect of having both pneumatic power and electric power. However, in other embodiments, the position of the pneumatic motor 31 and that of the electric motor 32 can be exchanged, that is, an output part of the electric motor 32 is connected to an input part of the pneumatic motor 31, which can also achieve the technical effect of using a gas source or a power source to generate power respectively. It is also possible to provide the clutch component 35 between the pneumatic motor 31 and the electric motor 32 to control a separated/linked state between the two motors.
An output part of the reduction box 37 is provided with a cam 38, and the cam 38 is fixedly connected to an output shaft of the reduction box 37 via a fastening pin 39. In this way, the cam 38 rotates about its axis under the drive of the reduction box 37, and outputs a driving force to the power component 2.
As shown in
An inflation pump switch 314 is used to control on and off of the electric inflation pump. In this embodiment, the electric inflation pump 313 is used to replace an electric motor part of a conventional electric nail gun. On the one hand, the limitation that the working time of the electric motor should not be too long is broken through. On the other hand, the nail gun can work normally in a work scenario with only a gas source or only a power source, without the need to change different types of nail guns.
The specific preferred embodiments of the present invention are described in detail above. It should be understood that a person of ordinary skill in the art would be able to make various modifications and variations according to the concept of the present invention without involving any inventive effort. Therefore, any technical solution that can be obtained by those skilled in the art by means of logical analysis, reasoning or limited trials on the basis of the prior art and according to the concept of the present invention should be included within the scope of protection of the claims.
The present application is a continuation-in-part of International Application No. PCT/CN2020/104764, filed on Jul. 27, 2020, the disclosure of which is incorporated herein in its entirety by reference.
Number | Date | Country | |
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Parent | PCT/CN2020/104764 | Jul 2020 | US |
Child | 18159826 | US |