Efficient trochoidal roller rack structure and nail gun

Abstract

The present application is to solve the problem of low efficiency and slow speed of the tooth row in the existing nail gun; a high-efficiency trochoidal roller rack structure and nail gun are provided, wherein the trochoidal roller rack structure comprises a striker and a transmission structure; the striker and the transmission structure are connected; characterized in that the transmission structure comprises an engaging wheel; the engaging wheel is in the shape of a disc as a whole; a plurality of cylindrical teeth are arranged on the engaging wheel and are arranged at equal angles around the axis of the engaging wheel; a trochoidal rack is arranged on the striker and cooperates with the plurality of cylindrical teeth; the trochoidal rack is a tooth row composed of a plurality of trochoidal teeth; the linear velocity of the striker is improved, and the efficiency of the nail shooting is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nail guns, in particular to an efficient hypocycloidal roller rack structure and nail gun. BACKGROUND

[0002] A nail gun is a decoration tool for nailing special-shaped nails into a component to be installed. According to the type of power, it is divided into electric nail guns, pneumatic nail guns, gas nail guns and hand nail guns, etc., among which electric nail guns and pneumatic nail guns are two types widely used. The pneumatic nail gun mainly obtains high air pressure through an external air pump to provide power for the nails in the channel; the electric nail gun mainly controls the contraction of the striker through the motor, compresses the spring or gas tank cooperating with the striker, and then releases the striker to impact the nail. The overall size of the electric nail gun is smaller than that of the pneumatic nail gun, it is convenient to carry, and it can be provided with an independent power supply, so it has a wide application prospect.

[0003] The existing electric nail gun, such as the scheme shown in the patent with the authorization announcement number CN216504892U, usually sets the clamping teeth on the outer periphery of the driving wheel, cooperates with the toothed rack set on the transmission member, realizes the contraction of the driving wheel driving the transmission member, stores energy in the energy storage mechanism, and finally releases the energy through the energy storage mechanism to impact the transmission member to impact the nail, thereby realizing the nail shooting operation. However, in the above electric nail gun structure, the toothed rack on the transmission member requires that the clamping teeth on the driving wheel remain engaged, so the tooth pitch of the toothed rack needs to correspond to the tooth pitch of the clamping teeth. In addition, due to the limitation of the tooth height in the toothed rack, the tooth pitch value of the toothed rack is usually small, so the linear speed of the toothed rack is relatively slow, and the efficiency of the nail shooting efficiency is low. Therefore, a high-efficiency nail gun structure with a fast striker linear speed is needed. SUMMARY

[0004] The purpose of the present application is to solve the problems of the prior art and provide an efficient hypocycloidal roller rack structure and nail gun.

[0005] In order to solve the above problems, the present application adopts the following technical scheme:

[0006] An efficient hypocycloidal roller rack structure, comprising a striker and a transmission structure; the striker and the transmission structure are connected; characterized in that the transmission structure comprises an engaging wheel; the engaging wheel is in the shape of a disc as a whole; a plurality of cylindrical teeth are provided on the engaging wheel and are arranged at equal angles around the axis of the engaging wheel; a cycloidal rack is provided on the striker and cooperates with the plurality of cylindrical teeth; the cycloidal rack is a toothed rack composed of a plurality of cycloidal teeth.

[0007] Further, the transmission structure further comprises a driving wheel, a driven wheel and a connecting rod; the driving wheel is arranged at the output end of the power source and moves with the power source; the driven wheel is in meshing connection with the driving wheel; the driving wheel is rotatably arranged at one end of the connecting rod; the driven wheel is rotatably arranged at the other end of the connecting rod; the meshing wheel is coaxially arranged with the driven wheel to enable synchronous rotation of the meshing wheel and the driven wheel; the two rows of cycloidal racks are mirror images with respect to the tooth bottoms thereof; and the tooth bottoms of the two rows of cycloidal racks are connected to each other.

[0008] Further, a one-way bearing is arranged between the driven wheel and the connecting rod; the one-way bearing allows rotation in a direction opposite to the rotation direction of the power source output.

[0009] Further, the driving wheel and the driven wheel are both straight gears.

[0010] Further, the mirror images of the two rows of cycloidal racks pass through the central axis of the driving wheel.

[0011] Further, the deflection angle of the connecting rod is a set value; when the connecting rod is deflected within the set value range of the deflection angle, the meshing wheel and the cycloidal rack on the striker remain in meshing.

[0012] Further, the application further comprises an energy storage member and a power source; the energy storage member is connected to the striker; and the power source is connected to the driving wheel in the transmission structure.

[0013] Further, the energy storage member comprises a sealed cylinder and a piston, wherein the sealed cylinder is arranged inside the housing; the piston is arranged in the sealed cylinder; and the piston is further connected to one end of the striker.

[0014] A nail gun, characterized in that the nail gun comprises the above-mentioned secondary cycloidal roller rack structure and further comprises a housing, wherein the secondary cycloidal roller rack structure is arranged in the housing.

[0015] Further, the application further comprises a safety lock structure, wherein the safety lock structure is arranged at the nail shooting port of the nail gun; the safety lock structure comprises a trigger, a spring and a trigger switch; the trigger is slidingly arranged near the nail shooting port on the housing; the spring is further arranged between the trigger and the housing and is sleeved on the outer side of the trigger; the trigger switch is arranged on the sliding path of the trigger to enable the trigger to contact the trigger switch when the trigger slides in the housing; and the trigger switch is connected to the power source in the housing.

[0016] The application has the following beneficial effects:

[0017] By arranging the cycloidal rack in meshing connection with the meshing wheel, the rapid movement of the striker is realized; compared with the traditional straight gear meshing structure, the linear velocity of the striker is improved and the nail shooting efficiency is improved under the condition that the rotation speed of the meshing wheel is unchanged.

[0018] By setting the transmission structure including driving wheel, driven wheel, meshing wheel and connecting rod, the meshing wheel can move around the cycloid rack on the striker, realizing the contraction and release of the striker;

[0019] By setting the one-way bearing between the driven wheel and the connecting rod, the striker is locked when it is contracted, avoiding the release of the striker due to the stop of the power source and other special conditions, improving the operation safety;

[0020] By setting the safety lock structure, when the presser in the nail shooting port area is not pressed, causing the trigger switch not to be triggered, the power source is kept off, improving the operation safety;

[0021] By setting the presser including connecting rod and adjusting block, cooperating with the threaded structure, the length of the adjusting block extending out of the nail shooting port is controlled, and then the depth of the nail shot by the nail shooting port into the external component is adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of embodiment 1;

[0023] Figure 2 It is a schematic diagram of the inside of the shell of embodiment 1;

[0024] Figure 3 It is a schematic diagram of the transmission structure inside the shell of embodiment 1;

[0025] Figure 4 It is a schematic diagram of the combination of the transmission structure and the striker of embodiment 1 Figure 1 ;

[0026] Figure 5 It is a schematic diagram of the combination of the transmission structure and the striker of embodiment 1 Figure 2 ;

[0027] Figure 6 It is a schematic diagram of the combination of the transmission structure and the power source of embodiment 1;

[0028] Figure 7 It is a schematic diagram of embodiment 1 after removing the shell;

[0029] Figure 8 It is a schematic diagram of the safety lock structure of embodiment 1;

[0030] Figure 9 It is a schematic diagram of the cycloid profile of embodiment 1 Figure 1 ;

[0031] Figure 10 It is a schematic diagram of the cycloid profile of embodiment 1 Figure 2 ;

[0032] Figure 11 It is a schematic diagram of the cooperation of the meshing wheel and the cycloid rack at different positions of embodiment 1.

[0033] The figure identification explanation: housing 1, energy storage 2, sealed cylinder 21, piston 22, striker 3, cycloid rack 31, power source 4, transmission structure 5, driving wheel 51, driven wheel 52, meshing wheel 53, cylindrical teeth 531, connecting rod 54, one-way bearing 55, safety lock structure 6, connecting rod 61, adjusting block 62, spring 63, trigger switch 64, trigger 65. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. The present application can also be implemented or applied in other different embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0035] It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The actual implementation of each component may be a random change, and the component layout pattern may be more complex.

[0036] Example 1:

[0037] As shown in Figures 1-11 A nail gun includes a housing 1 and a secondary cycloid roller rack structure, wherein the secondary cycloid roller rack structure is arranged inside the housing; the secondary cycloid roller rack structure includes an energy storage 2, a striker 3, a power source 4 and a transmission structure 5; the energy storage 2 is connected with the striker 3; the transmission structure 5 is further arranged between the power source 4 and the striker 3; the transmission structure 5 includes a meshing wheel 53, the meshing wheel 53 is connected with the power source 4 and is driven by the power source 4; the meshing wheel 53 is in the form of a disc as a whole; a plurality of cylindrical teeth 531 are arranged on the meshing wheel 53, the cylindrical teeth 531 are arranged at equal angles around the axis of the meshing wheel 53, and in this example, one cylindrical tooth 531 is arranged; a cycloid rack 31 is arranged on the striker 3 and cooperates with the plurality of cylindrical teeth 531; the cycloid rack 31 is a rack composed of a plurality of cycloid teeth. It should be noted that in this example, the cycloid tooth shape represents the cycloid or equidistant curve of the cycloid formed by the rotation of the cylindrical tooth 531 on the meshing wheel 53, refer to [1] Zhang Peng. Secondary cycloid roller rack transmission tooth profile synthesis research [J]. Mechanical science and technology, 2017, 36(5), 722-728.

[0038] The transmission structure 5 comprises a driving wheel 51, a driven wheel 52, an engaging wheel 53 and a connecting rod 54; the driving wheel 51 is arranged at the output end of the power source 4, and the driving wheel 51 acts following the action of the power source 4; the driven wheel 52 is in meshing connection with the driving wheel 51; the driving wheel 51 is rotatably arranged at one end of the connecting rod 54; the driven wheel 52 is rotatably arranged at the other end of the connecting rod 54; the engaging wheel 53 is coaxially arranged with the driven wheel 52, so that the engaging wheel 53 and the driven wheel 52 synchronously rotate; the cycloid rack 31 has two rows, and the two rows of cycloid racks 31 are mirror images about the tooth bottoms; the tooth bottoms of the two rows of cycloid racks 31 are connected with each other, forming a plurality of equidistant tooth column structures in the shape of a rhombus; it should be noted that the tooth column structure is not a standard rhombus, but a part of the cycloid track. It should be noted that the mirror image surface of the two rows of cycloid racks 31 passes through the central axis of the driving wheel 51, so that the left and right swing angles of the connecting rod 54 are consistent, and the stability of the structure during action is enhanced.

[0039] A one-way bearing 55 is arranged between the driven wheel 52 and the connecting rod 54, and the rotational connection between the driven wheel 52 and the connecting rod 54 is realized through the one-way bearing 55; the one-way bearing 55 allows the rotation direction to be opposite to the rotation direction of the output of the power source 4; in this example, the one-way bearing 55 is used to avoid the automatic release of the hammer 3 during the energy storage process of the energy storage member 2.

[0040] The driving wheel 51 and the driven wheel 52 are both spur gears; the engaging wheel 53 is a roller, comprising a disc-shaped bottom and a plurality of cylindrical teeth 531 arranged above the disc-shaped bottom.

[0041] The deflection angle of the connecting rod 54 is a set value, and when the connecting rod 54 deflects within the set value of the deflection angle, the engaging wheel 53 remains in meshing with the cycloid rack 31 on the hammer 3.

[0042] The power source 4 is used to provide rotational kinetic energy to help the driving wheel 51 rotate; in this example, the power source 4 is an electric motor.

[0043] The energy storage member 2 comprises a sealed cylinder 21 and a piston 22, wherein the sealed cylinder 21 is arranged inside the housing 1; the piston 22 is arranged in the sealed cylinder 21; the piston 22 is further connected with one end of the hammer 3, so that the piston 22 follows the action of the hammer 3. It should be noted that in some other embodiments, the energy storage member 2 can also be an energy storage spring.

[0044] In the implementation process, assuming that the direction of the rotational kinetic energy output by the power source 4 is clockwise, the allowed rotation direction of the one-way bearing 55 is counterclockwise; first, the driving wheel 51 is driven by the power source 4 to rotate clockwise, the driven wheel 52 and the meshing wheel 53 are driven by the driving wheel 51 to rotate counterclockwise, and the meshing wheel 53 can rotate smoothly due to the action of the one-way bearing 55; at this time, the connecting rod 54 is deflected to the left side of the hammer 3, and due to the meshing connection relationship between the meshing wheel 53 and the cycloid rack 31, the hammer 3 moves towards the energy storage member 2 in the nail gun, realizing the energy storage of the energy storage member 2; it should be noted that due to the action of the one-way bearing 55, the meshing wheel 53 is difficult to rotate clockwise, so when the meshing wheel 53 is located on the left side of the hammer 3, it will automatically lock the hammer 3, even if the power source 4 stops due to power failure or the like, the hammer 3 will not be released; until the meshing wheel 53 moves to the end of the cycloid rack 31 on the left side of the hammer 3 away from the air cylinder, with the continuous rotation of the meshing wheel 53, the connecting rod 54 is deflected to the right side of the hammer 3, the meshing wheel 53 is engaged with the cycloid rack 31 on the right side of the hammer 3, and at this time, due to the action of the one-way bearing 55 and the thrust in the energy storage member 2, the hammer 3 is released; after the hammer 3 is released, the meshing wheel 53 moves to the end of the cycloid rack 31 on the right side close to the air cylinder, with the continuous rotation of the meshing wheel 53, the connecting rod 54 is deflected to the left side of the hammer 3, and the contraction and release process of the hammer 3 is repeated. It should be noted that when the hammer 3 is released, the power source 4 can continue to rotate or stop rotating; if the power source 4 continues to rotate, the energy of the hammer 3 when released is increased, which better completes the work of the nail gun shooting nails; if the power source 4 stops rotating, the hammer 3 is pushed by the energy stored in the energy storage member 2 to complete the work of shooting nails.

[0045] In order to ensure the safety of the operation of the nail gun, a safety lock structure 6 is further arranged on the shell 1 of the nail gun; the safety lock structure 6 comprises a trigger 65, a spring 63 and a trigger switch 64; the trigger 65 is slidingly arranged near the shooting port of the shell 1; it should be noted that the shooting port of the shell 1 is the opening for the nail gun to shoot nails, and in this example, the sliding direction of the trigger 65 is consistent with the direction of the shooting port for shooting nails; the spring 63 is further arranged between the trigger 65 and the shell 1, and the spring 63 is sleeved on the outer side of the trigger 65; the trigger switch 64 is arranged on the sliding path of the trigger 65, so that the trigger 65 can contact the trigger switch 64 when sliding in the shell 1; the trigger switch 64 is connected with the power source 4 in the shell 1.

[0046] The trigger switch 64 is a contact switch or a photoelectric switch, and in this example, it is a contact switch. It should be noted that when the trigger switch 64 is not triggered, the power source 4 cannot be started; only after the trigger switch 64 is started by pressing the trigger 65, the locking of the power source 4 is released, so that the power source 4 can accept control instructions and act.

[0047] The trigger 65 comprises a connecting rod 61 and an adjusting block 62; the connecting rod 61 is slidingly arranged in the shell 1, and the adjusting block 62 is arranged close to the nail shooting port of the shell 1; the adjusting block 62 is sleeved on the connecting rod 61 through a threaded structure, and the threaded structure can adjust the length of the adjusting block 62 extending out of the nail shooting port.

[0048] In the implementation, the rapid movement of the striker 3 is realized by setting the cycloid rack 31 to engage the engaging wheel 53. Compared with the traditional straight gear engagement structure, the linear velocity of the striker 3 is improved and the efficiency of the nail shooting is improved under the condition that the rotating speed of the engaging wheel 53 is unchanged. The contraction and release of the striker 3 are realized by setting the transmission structure 5 comprising the driving wheel 51, the driven wheel 52, the engaging wheel 53 and the connecting rod 54, so that the engaging wheel 53 can move around the cycloid rack 31 on the striker 3. The striker 3 is locked when it is contracted, so that the striker 3 is prevented from being released due to the stop of the power source 4 and the like, and the operation safety is improved. The safety lock structure 6 is set, so that when the pressing member in the nail shooting port area is not pressed, the trigger switch 64 is not triggered, the power source 4 is kept off, and the operation safety is improved. The pressing member comprising the connecting rod 61 and the adjusting block 62 is set, the threaded structure is matched, the length of the adjusting block 62 extending out of the nail shooting port is controlled, and then the depth of the nail shot out of the nail shooting port and punched into the external component is adjusted.

[0049] The above description is only one specific example of the present application and does not constitute any limitation on the present application. Obviously, for those skilled in the art, after understanding the content and principles of the present application, various modifications and changes in form and details can be made without departing from the principles and structures of the present application, but these modifications and changes based on the idea of the present application are still within the protection scope of the claims of the present application.

Claims

1. A high-efficiency trochoidal roller rack structure, comprising a striker (3) and a transmission structure (5); the striker and the transmission structure are connected; characterized in that, The transmission structure (5) comprises an engaging wheel (53); the engaging wheel (53) is in a whole disc shape; a plurality of columnar teeth (531) are arranged on the engaging wheel (53), and the columnar teeth (531) are arranged at equal angles around the axis of the engaging wheel (53); a cycloid rack (31) matched with the plurality of columnar teeth (531) is arranged on the striker (3); the cycloid rack (31) is composed of a plurality of cycloid teeth. The transmission structure (5) further comprises a driving wheel (51), a driven wheel (52) and a connecting rod (54); the driving wheel (51) is arranged on the output end of the power source (4), and the driving wheel (51) moves along with the movement of the power source (4); the driven wheel (52) is in meshing connection with the driving wheel (51); the driving wheel (51) is rotatably arranged on one end of the connecting rod (54); the driven wheel (52) is rotatably arranged on the other end of the connecting rod (54); the engaging wheel (53) is coaxially arranged with the driven wheel (52), so that the engaging wheel (53) and the driven wheel (52) rotate synchronously; the cycloid rack (31) has two rows, and the two rows of cycloid racks (31) are mirror images about the tooth bottoms; the tooth bottoms of the two rows of cycloid racks (31) are connected with each other. A one-way bearing (55) is arranged between the driven wheel (52) and the connecting rod (54); the one-way bearing (55) allows the rotating direction to be opposite to the rotating direction of the output of the power source (4).

2. The high-efficiency trochoidal roller pinion structure according to claim 1, wherein The driving wheel (51) and the driven wheel (52) are both spur gears.

3. The high-efficiency trochoidal roller pinion structure of claim 1, wherein, The mirror images of the two rows of cycloid racks (31) pass through the central axis of the driving wheel (51).

4. The high-efficiency trochoidal roller pinion structure according to claim 3, wherein The deflection angle of the connecting rod (54) is a set value; when the connecting rod (54) deflects within the set value of the deflection angle, the engaging wheel (53) and the cycloid rack (31) on the striker (3) remain in meshing.

5. The high efficiency trochoidal roller pinion structure of claim 1 wherein, Further comprising an energy storage member (2) and a power source (4); the energy storage member (2) is connected with the striker (3); the power source (4) is connected with the driving wheel (51) in the transmission structure (5).

6. The high-efficiency trochoidal roller pinion structure of claim 5, wherein, The energy storage member (2) comprises a sealed cylinder (21) and a piston (22), wherein the sealed cylinder (21) is arranged inside the shell (1); the piston (22) is arranged in the sealed cylinder (21); and the piston (22) is further connected with one end of the striker (3).

7. A nail gun characterized by, The shell (1) is further provided with the secondary cycloid roller rack structure according to any one of claims 1-6.

8. The nail gun of claim 7, wherein, Further comprising a safety lock structure (6), which is arranged at the nail shooting port of the nail gun; the safety lock structure (6) comprises a trigger member (65), a spring (63) and a trigger switch (64); the trigger member (65) is slidingly arranged near the nail shooting port on the shell (1), and the spring (63) is further arranged between the trigger member (65) and the shell (1), and the spring (63) is sleeved outside the trigger member (65); the trigger switch (64) is arranged on the sliding path of the trigger member (65), so that the trigger member (65) can contact the trigger switch (64) when sliding in the shell (1); and the trigger switch (64) is connected with the power source (4) in the shell (1).

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