Power structure applied to rivet gun

Abstract

The invention discloses a power structure applied to a rivet gun, and relates to the technical field of rivet guns. A power structure applied to a rivet gun comprises a driving part, a variable transmission mechanism, a balance gear set, a nut and a screw used for being connected with a grabbing unit, and the driving part, the variable transmission mechanism, the balance gear set, the nut and the screw are sequentially in transmission connection. The balance gear set comprises a first transmission gear and a second transmission gear which are connected in a meshed mode, the first transmission gear is configured to apply deflection force in the first direction to the shell when rotating, the second transmission gear is configured to apply deflection force in the second direction to the shell when rotating, and the first direction is opposite to the second direction. The deviation force borne by the rivet gun in the using process can be reduced, so that the using safety of a user is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of rivet guns, and in particular to a power structure applied to rivet guns. Background Art

[0002] A rivet gun, also known as a rivet gun, is a tool used for fastening and riveting metal plates, pipes, and other manufacturing industries. It is widely used in product riveting in various industries. At present, rivet guns can be generally divided into four types according to the type of power source: electric rivet guns, hydraulic rivet guns, pneumatic rivet guns, and manual rivet guns. Among them, electric rivet guns are widely used because of their fast and efficient riveting.

[0003] Since electric rivet guns usually use a stretching method to rivet products, they need to be used with special rivet connectors. Typically, the most commonly used ones are blind rivets.

[0004] Usually, an electric rivet gun generally includes a shell, in which a grabbing unit and a power unit are arranged. When working, the grabbing unit grabs the nail rod of the core-pulling rivet, and then the power unit drives the grabbing unit to move to break the nail rod to complete the riveting.

[0005] The power unit generally includes a motor, a speed transmission mechanism, a transmission gear, a nut and a screw connected in sequence. The motor inputs power, the speed transmission mechanism reduces the speed, the transmission gear and the nut transmit power, and the screw is connected to the grabbing unit to output power.

[0006] In order to facilitate the user to work with a rivet gun, the outer shell is generally configured to be narrow at the bottom and wide at the top for easy gripping. The outer shell will include a narrower hand-held shell portion at the bottom, a taller and medium-sized mounting shell portion, and a taller and widest containing shell portion. For stability, parts with a certain weight such as the battery that powers the motor will be installed in the hand-held shell portion, the motor and the speed transmission mechanism are generally arranged in the mounting shell portion, and the nut and the screw will be arranged in the containing shell portion, wherein the transmission gear that transmits power is installed between the containing shell portion and the mounting shell portion.

[0007] During riveting, the rotation of the transmission gear will have a rotational deflection force, which will cause the object to shift in the direction of movement. Specifically in electric rivet guns, since the transmission gears are generally directly connected to the outer shell for rotation, the deflection force will cause the outer shell to be affected by the deflection force as well. This will cause the entire rivet gun to shift to one side during use. The user needs to exert a certain force with his hand to control the rivet gun to work stably, which causes certain inconveniences to the user and there is a certain danger when the user uses the rivet gun.

[0008] Therefore, how to reduce this biasing force to ensure the safety of users is an urgent problem to be solved. Summary of the invention

[0009] In order to reduce the deflection force applied to a rivet gun during use to ensure the user's safety, the present application provides a power structure applied to a rivet gun.

[0010] The power structure of a rivet gun provided in the present application adopts the following technical solution: A power structure applied to a rivet gun, comprising a driving member, a speed transmission mechanism, a balancing gear set, a nut and a screw rod connected to a grabbing unit, wherein the driving member, the speed transmission mechanism, the balancing gear set, the nut and the screw rod are sequentially connected in a driving manner; The balancing gear set includes a transmission gear 1 and a transmission gear 2 that are meshed and connected. The transmission gear 1 is configured to form a biasing force in a first direction applied to the housing when it rotates, and the transmission gear 2 is configured to form a biasing force in a second direction applied to the housing when it rotates, and the first direction and the second direction are opposite.

[0011] By adopting the above technical solution, when working, the driving member drives the speed change transmission mechanism, transmission gear 1, transmission gear 2, nut and screw to work simultaneously. At this time, the transmission gear 1 will form a deflection force in the first direction applied to the shell, and the transmission gear 2 will form a deflection force in the second direction applied to the shell. Since the first direction and the second direction are opposite, the deflection force in the first direction and the deflection force in the second direction will be offset as much as possible, thereby reducing the deflection force on the shell, that is, the rivet gun during use, and ensuring the safety of the user.

[0012] Preferably, the transmission gear 1 is located above the transmission gear 2, and the transmission gear 1 and the transmission gear 2 are externally meshed.

[0013] Preferably, the structure of the transmission gear 1 is the same as the structure of the transmission gear 2.

[0014] By adopting the above technical solution, the deflection force in the first direction and the deflection force in the second direction can be offset as much as possible.

[0015] Preferably, the transmission gear 1 and the transmission gear 2 are both spur gears.

[0016] By adopting the above technical solution, spur gears are more commonly used and easier to manufacture, and are also easier to repair and clean later.

[0017] Preferably, a power structure applied to a rivet gun also includes a sealing shell for connecting to the outer shell, the sealing shell having a blind hole 1 and a blind hole 2, the blind hole 1 being provided with a bearing 1, the blind hole 2 being provided with a bearing 2, the transmission gear 1 being rotatably connected to the blind hole 1 via the bearing 1, and the transmission gear 2 being rotatably connected to the blind hole 2 via the bearing 2.

[0018] By adopting the above technical solution, when the transmission gear 1 rotates, it will apply a force in the first direction to the sealing shell and thus apply a force in the first direction to the outer shell. When the transmission gear 2 rotates, it will apply a force in the second direction to the sealing shell and thus apply a force in the second direction to the outer shell.

[0019] Preferably, an installation cavity is formed between the sealing shell and the outer shell, and the transmission gear 1 and the transmission gear 2 are located in the installation cavity; and a dust ring is extruded and installed between the sealing shell and the outer shell.

[0020] By adopting the above technical solution, the dustproof ring can prevent dust from entering the installation cavity, thereby causing the rotation center of the transmission gear 1 and the transmission gear 2 to shift.

[0021] Preferably, the outer shell is provided with a connecting hole, the sealing shell is provided with a docking hole, and the connecting hole and the docking hole are connected together with a screw.

[0022] By adopting the above technical solution, the sealing shell can be disassembled to clean the transmission gear 1 and the transmission gear 2.

[0023] Preferably, the screw is connected to a guide post, and the guide post is used to be slidably clamped on the housing to guide the movement of the screw.

[0024] In summary, the present invention includes at least one of the following beneficial technical effects: 1. When working, the driving member drives the speed transmission mechanism, transmission gear 1, transmission gear 2, nut and screw to work simultaneously. At this time, transmission gear 1 will form a deflection force in the first direction on the housing, and transmission gear 2 will form a deflection force in the second direction on the housing. Since the first direction and the second direction are opposite, the deflection force in the first direction and the deflection force in the second direction will be offset as much as possible, thereby reducing the deflection force on the housing, i.e. the rivet gun, during use, and ensuring the safety of the user; 2. The transmission gear 1 and the transmission gear 2 which are installed vertically and have the same structure can offset the deflection force in the first direction and the deflection force in the second direction as much as possible; 3. The dustproof ring can prevent dust from entering the installation cavity, thereby causing the rotation center of the transmission gear 1 and the transmission gear 2 to shift and cause the first direction and the second direction to deviate; 4. The sealing shell can be removed by unscrewing the screws to clean the transmission gear 1 and the transmission gear 2 to ensure that the rotation center of the transmission gear 1 and the transmission gear 2 will not deviate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a cross-sectional view of a power structure applied to a rivet gun in an embodiment of the present application; Figure 2 It is a schematic diagram of a half-section structure used to reflect the connection hole; Figure 3 It is a schematic diagram for reflecting the structure of the sealed shell; Figure 4 It is a schematic diagram of the partial cross-sectional structure used to illustrate the guide column.

[0026] Markings in the accompanying drawings: 1. outer casing; 11. connecting hole; 12. mounting cavity; 13. slide groove; 2. driving member; 3. speed transmission mechanism; 4. balancing gear set; 41. transmission gear one; 42. transmission gear two; 5. nut; 6. screw; 61. guide column; 7. sealing shell; 71. docking hole; 72. blind hole one; 73. blind hole two; 74. bearing one; 75. bearing two; 8. dust ring. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figure 1 The rivet gun comprises a shell 1, and a grabbing unit is arranged inside the shell 1. The present application is implemented based on being arranged inside the shell 1 and connected to the grabbing unit.

[0031] The embodiment of the present application discloses a power structure applied to a rivet gun, which is used to prevent the rivet gun from deflecting during use, thereby ensuring the safety of the user.

[0032] Reference Figure 1A power structure applied to a rivet gun includes a driving member 2, a speed change transmission mechanism 3, a balance gear set 4, a nut 5 and a screw 6 for connecting with a grabbing unit, which are arranged inside a shell 1. The driving member 2, the speed change transmission mechanism 3, the balance gear set 4, the nut 5 and the screw 6 are sequentially connected in transmission. In this embodiment, the driving member 2 is a motor. Of course, in other embodiments, the driving member 2 can also be other power members capable of inputting torque.

[0033] Reference Figure 1 The balance gear set 4 includes a transmission gear 1 41 and a transmission gear 2 42 that are meshed and connected. The transmission gear 1 41 is meshed and connected with the nut 5, and the transmission gear 2 42 is meshed and connected with the speed change transmission mechanism 3. The projections of the axis of the transmission gear 1 41, the axis of the transmission gear 2 42, the axis of the nut 5, and the axis of the screw 6 on the horizontal plane overlap. Specifically, the structure of the transmission gear 1 41 is the same as that of the transmission gear 2 42. The transmission gear 1 41 is located above the transmission gear 2 42. The transmission gear 1 41 and the transmission gear 2 42 are both spur gears, and the transmission gear 1 41 and the transmission gear 2 42 are externally meshed.

[0034] When the driving member 2 is working, the driving member 2 inputs force to the speed change transmission mechanism 3, and then the speed change transmission mechanism 3 drives the transmission gear 2 42 and the transmission gear 1 41 to rotate in opposite directions. When the transmission gear 1 41 rotates, a deflection force in a first direction is applied to the outer shell 1. When the transmission gear 2 42 rotates, a deflection force in a second direction is applied to the outer shell 1, and the first direction and the second direction are opposite.

[0035] Therefore, since the first direction and the second direction are opposite, when the rivet gun is working, the deflection force in the first direction and the deflection force in the second direction cancel each other out, thereby reducing the deflection force on the housing 1, i.e. the rivet gun, during use, and ensuring the user's safety.

[0036] It should be noted that, in this field, the rotation of the nut 5 does not exert much bias force on the housing 1, because when the rivet gun is riveting, the force exerted by the nut 5 on the housing 1 will offset the force of the grabbing unit pulling the rivet rod.

[0037] Reference Figure 1 Combined with Figure 2 and Figure 3 A power structure for a rivet gun further includes a sealing shell 7 connected to the outer shell 1; the outer shell 1 has a connecting hole 11, the sealing shell 7 has a docking hole 71, and the connecting hole 11 and the docking hole 71 are connected together by screws. Therefore, the sealing shell 7 can be disassembled.

[0038] Reference Figure 3 The sealing shell 7 has a blind hole 1 72 and a blind hole 2 73, combined with Figure 1, blind hole 1 72 is provided with bearing 1 74, blind hole 2 73 is provided with bearing 2 75, transmission gear 1 41 is rotatably connected to blind hole 1 72 through bearing 1 74, transmission gear 2 42 is rotatably connected to blind hole 2 73 through bearing 2 75; in this embodiment, bearing 1 74 and bearing 2 75 are needle roller combination bearings that can withstand more radial loads. In other embodiments, bearing 1 74 and bearing 2 75 can also be other bearings that can withstand radial loads.

[0039] Reference Figure 3 A mounting cavity 12 is formed between the sealing shell 7 and the housing 1, and the transmission gear 1 41 and the transmission gear 2 42 are located in the mounting cavity 12; Figure 1 A dustproof ring 8 is extruded and installed between the sealing shell 7 and the outer shell 1, and the dustproof ring 8 is an O-ring.

[0040] The dustproof ring 8 can prevent dust from entering the installation cavity 12 so as to shift the rotation center of the transmission gear 1 41 and the transmission gear 2 42 and cause the orientation of the first direction and the second direction to deviate.

[0041] Reference Figure 4 The screw rod 6 is connected to a guide column 61, and the housing 1 includes a slide groove 13 formed on the inner wall. The slide groove 13 is arranged horizontally, and the guide column 61 is slidably clamped in the slide groove 13. The movement of the guide column 61 is guided, and the movement of the screw rod 6 is also guided.

[0042] The implementation principle of a power structure applied to a rivet gun in the embodiment of the present application is: During operation, the driving member 2 drives the speed change transmission mechanism 3, the transmission gear 1 41, the transmission gear 2 42, the nut 5 and the screw 6 to work simultaneously. At this time, the transmission gear 1 41 will apply a deflection force in the first direction to the sealing shell 7, thereby applying a deflection force in the first direction to the outer shell 1. The transmission gear 2 42 will apply a deflection force in the second direction to the sealing shell 7, thereby applying a deflection force in the second direction to the outer shell 1. Since the first direction and the second direction are opposite, the deflection force in the first direction and the deflection force in the second direction will be offset as much as possible. This design reduces the deflection force on the outer shell 1, i.e., the rivet gun, during use.

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

Claims

1. A power structure applied to a rivet gun, characterized in that: It comprises a driving member (2), a speed change transmission mechanism (3), a balancing gear set (4), a nut (5) and a screw rod (6) for connecting with a grabbing unit, wherein the driving member (2), the speed change transmission mechanism (3), the balancing gear set (4), the nut (5) and the screw rod (6) are sequentially connected in driving manner; The balancing gear set (4) comprises a transmission gear 1 (41) and a transmission gear 2 (42) which are meshed and connected, wherein the transmission gear 1 (41) is configured to generate a biasing force in a first direction applied to the housing (1) when rotating, and the transmission gear 2 (42) is configured to generate a biasing force in a second direction applied to the housing (1) when rotating, and the first direction and the second direction are opposite.

2. The power structure used for a rivet gun according to claim 1, characterized in that: The transmission gear 1 (41) is located above the transmission gear 2 (42), and the transmission gear 1 (41) and the transmission gear 2 (42) are externally meshed.

3. The power structure used for a rivet gun according to claim 1, characterized in that: The structure of the transmission gear 1 (41) is the same as that of the transmission gear 2 (42).

4. The power structure used for a rivet gun according to claim 3, characterized in that: The transmission gear 1 (41) and the transmission gear 2 (42) are both spur gears.

5. The power structure used for a rivet gun according to claim 1, characterized in that: A power structure applied to a rivet gun further comprises a sealing shell (7) for connecting to an outer shell (1), the sealing shell (7) having a blind hole 1 (72) and a blind hole 2 (73), the blind hole 1 (72) being provided with a bearing 1 (74), the blind hole 2 (73) being provided with a bearing 2 (75), the transmission gear 1 (41) being rotatably connected to the blind hole 1 (72) via the bearing 1 (74), and the transmission gear 2 (42) being rotatably connected to the blind hole 2 (73) via the bearing 2 (75).

6. The power structure used for a rivet gun according to claim 5, characterized in that: An installation cavity (12) is formed between the sealing shell (7) and the outer shell (1), and the transmission gear 1 (41) and the transmission gear 2 (42) are located in the installation cavity (12); and a dustproof ring (8) is extruded and installed between the sealing shell (7) and the outer shell (1).

7. The power structure used for a rivet gun according to claim 5, characterized in that: The outer shell (1) is provided with a connection hole (11), the sealing shell (7) is provided with a docking hole (71), and the connection hole (11) and the docking hole (71) are connected together by a screw.

8. The power structure used for a rivet gun according to claim 1, characterized in that: The screw rod (6) is connected to a guide column (61), and the guide column (61) is used to be slidably clamped on the housing (1) to guide the movement of the screw rod (6).

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