Power riveting tool accessories with safety side handles and power riveting tools

Abstract

The present invention belongs to the field of mechanical technology, and relates to a power riveting tool accessory with a safety side handle and a power riveting tool. It solves the technical problem of large resistance in the riveting process in the prior art. It includes a cylindrical handle, in which a rotating part axially positioned and circumferentially rotatably connected to the cylindrical handle and a transmission part circumferentially positioned and axially movably connected to the cylindrical handle are inserted, and the rotating part and the transmission part are connected by a threaded structure. Compared with the prior art, the advantages of the present invention are reasonable design, more labor-saving, and the circumferential positioning clutch structure can realize relative locking or rotation between the cylindrical handle and the safety side handle, and the controllability is better.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to a power riveting tool accessory with a safety side handle and a power riveting tool. Background Art

[0002] Rivet nuts and rivets are commonly used riveting fasteners, which are widely used in aerospace, military, automobile, shipbuilding, construction, installation, manufacturing and other industries with riveting and fastening needs. They are also widely used in civilian applications. The annual demand for various rivet nut tool products in related industries and domestic and foreign civilian markets is huge. The main development direction of rivet nut and rivet tool products is cost-effective, precise, convenient, efficient, and labor-saving.

[0003] In order to improve the shortcomings of manual rivet nut and rivet tools, such as laborious, heavy, low precision and low efficiency, integrated pneumatic riveting tools have been developed and popularized. Pneumatic riveting tools are mainly popularized and applied in the industrial market. The market expansion of pneumatic riveting tool products is limited by the limitation of compressed air source and high price. Then, integrated electric tools have attracted widespread market attention recently due to their portability and convenient power source, but there are not many products available in the domestic and foreign markets. Because the products are complex and the unit price is high, they are mainly targeted at some industrial markets.

[0004] In recent years, riveting tools have been turned into power tool accessories. With the help of the power output of the power tools that match them, the functions of the integrated electric riveting tools and pneumatic riveting tools are realized. Since power tools are general tools, such as electric drills, riveting power tool accessories and riveting tools are a valuable, meaningful and market-potential development direction for the riveting tool industry. Although it is much more labor-saving than the manual type, due to the limitation of the mechanical structure, the resistance during the riveting process is relatively large, and it is more difficult to use bare hands.

[0005] In response to this problem, people have also conducted exploration and research in long-term production and life practices. For example, a Chinese invention patent discloses a riveting tool accessory and a riveting tool [application number: CN201720199551.4]. The invention patent includes a cylindrical handle, in which a rotating member axially positioned and circumferentially rotatably connected to the cylindrical handle and a transmission member circumferentially positioned and axially movably connected to the cylindrical handle are inserted, the rotating member and the transmission member can be connected by a threaded structure, and when the rotating member rotates forward or reversely, it can drive the transmission member to retreat or advance, a connecting member at the front end of the transmission member is provided, and a rivet nut can be loaded at its front end, a guide nozzle assembly is provided at the front end of the cylindrical handle, the connecting member is inserted in the guide nozzle assembly and the front end of the connecting member can extend out of the guide nozzle assembly, a compression preload spring is provided between the transmission member and the guide nozzle assembly, and a safety valve mechanism is provided between the transmission member and the connecting member.

[0006] The above-mentioned solution has improved some problems of the prior art to a certain extent. However, the solution still has at least the following defects: the resistance during riveting is relatively large, it is difficult to use bare hands, and it is difficult to use leverage. Summary of the invention

[0007] The object of the present invention is to provide a power riveting tool accessory with a safety side handle which can save effort in view of the above problems.

[0008] Another object of the present invention is to provide a power riveting tool.

[0009] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the power riveting tool accessory with a safety side handle comprises a cylindrical handle, a rotating member axially positioned and circumferentially connected to the cylindrical handle and a transmission member circumferentially positioned and axially movably connected to the cylindrical handle are provided in the cylindrical handle, the rotating member and the transmission member are connected by a threaded structure, and when the rotating member rotates forward or reversely, the transmission member can be driven to move backward or forward, the front end of the transmission member is connected to a riveting working component, the outer periphery of the cylindrical handle is provided with a safety side handle axially positioned and circumferentially rotatably connected to the cylindrical handle, and a circumferential positioning clutch structure is provided between the safety side handle and the cylindrical handle. The safety side handle on the outer periphery of the cylindrical handle makes it easier to hold during riveting, and the safety side handle can lengthen the force arm to achieve greater and more effective torque resistance and save more effort; in addition, the circumferential positioning clutch structure can achieve relative locking or rotation between the cylindrical handle and the safety side handle, which has better controllability and can also eliminate the potential safety hazards caused by the possible rotation and movement of the safety side handle.

[0010] In the above-mentioned power riveting tool accessory with a safety side handle, the safety side handle includes an annular sleeve sleeved on the outer periphery of the cylindrical handle, the annular sleeve is axially positioned with the cylindrical handle and rotatably connected in the circumferential direction, and the annular sleeve is provided with a side handle extending to the outside of the annular sleeve. The safety side handle is designed as a split-assembly annular sleeve and a side handle, which is easy to disassemble and assemble, and is simple to operate. The hand is held on the side handle during operation. The annular sleeve and the side handle can also be connected as one body.

[0011] In the above-mentioned power riveting tool accessory with a safety side handle, the circumferential positioning clutch structure includes at least one positioning hole provided on the side of the cylindrical handle, the annular sleeve is movably provided with a positioning column located outside the cylindrical handle, and the positioning column is connected with a clutch control structure capable of controlling the axial movement of the positioning column. When the annular sleeve rotates circumferentially around the cylindrical handle until the positioning column and the positioning hole are arranged correspondingly, the inner end of the positioning column can enter the positioning hole under the action of the clutch control structure, thereby positioning the annular sleeve and the cylindrical handle circumferentially. Whether the annular sleeve and the cylindrical handle can be relatively circumferentially locked or relatively circumferentially rotated depends on whether the positioning column has been inserted into the positioning hole.

[0012] In the above-mentioned power riveting tool accessory with a safety side handle, the clutch control structure includes an elastic structure arranged between the safety side handle and the positioning column and capable of causing the positioning column to have an axial movement tendency toward the cylindrical handle and a retaining structure capable of keeping the positioning column out of the positioning hole. The elastic structure is used for circumferential locking between the annular sleeve and the cylindrical handle, while the retaining structure is used to keep the annular sleeve and the cylindrical handle able to rotate circumferentially after the positioning column is out of the positioning hole.

[0013] In the above-mentioned power riveting tool accessory with a safety side handle, the side handle is a hollow structure with a central channel, the inner end of the central channel is connected to the inner wall of the annular sleeve, the outer end of the central channel is located in the side handle or connected to the outer end of the side handle, the positioning column is arranged in the central channel, the elastic structure is arranged between the positioning column and the side handle, and the retaining structure is arranged between the positioning column and the side handle. The positioning column moves axially back and forth in the central channel, so that its top end enters the positioning hole or disengages from the positioning hole to achieve locking or disengagement conversion, and the central channel can ensure the accuracy of the radial position of the positioning column and the axial positioning between the positioning column and the positioning hole.

[0014] In the above-mentioned power riveting tool accessory with a safety side handle, the elastic structure includes a compression spring arranged in the central channel, the compression spring is sleeved on the positioning column, and one end of the compression spring acts on the positioning column, and the other end acts on the side handle.

[0015] In the above-mentioned power riveting tool accessory with a safety side handle, the retaining structure includes a pull ring, the outer end of the positioning column passes through the outer end of the side handle, the pull ring is arranged at the outer end of the positioning column, and the outer end of the side handle is provided with a radial notch. When the pull ring is located in the radial notch, the inner end of the positioning column can enter the positioning hole, and when the pull ring is pulled out of the radial notch and is mounted on the outer end of the side handle after rotation, the inner end of the positioning column is always in a state of being out of the positioning hole. By pulling the pull ring to control the positioning column, the locking or disengagement between the positioning column and the positioning hole can be achieved, and the operation is convenient.

[0016] In the above-mentioned power riveting tool accessory with a safety side handle, the inner end surface of the positioning column is smooth, so that the wear between the positioning column and the outer cylindrical surface of the cylindrical handle is minimized, and the in-and-out cooperation with the outer positioning hole of the cylindrical handle is smoother.

[0017] In the above-mentioned power riveting tool accessory with a safety side handle, there are a plurality of positioning holes and the centers of the positioning holes are located on the same cross section of the cylindrical handle; bearings are respectively provided between the two ends of the annular sleeve and the cylindrical handle. The provision of the bearings makes the relative rotation of the cylindrical handle and the annular sleeve smoother, and the effect of the follow-up rotation is close to that of having no external connection parts.

[0018] In the above-mentioned power riveting tool accessory with a safety side handle, the outer wall of the transmission part is provided with at least one limit guide groove extending along the axial direction of the transmission part, and the side of the cylindrical handle is penetrated with at least one limit pin, the limit pin and the limit guide groove are arranged one by one and the inner end of the limit pin is located in the limit guide groove, the central axis of the limit pin is located on the same cross-section of the cylindrical handle, and the central axis of the positioning column is coplanar with the central axis of the limit pin.

[0019] In the above-mentioned power riveting tool accessory with a safety side handle, the number of the positioning holes is two and they are symmetrically arranged, the number of the limit pins is two and they are symmetrically arranged, and when the annular sleeve is in a circumferentially positioned state relative to the cylindrical handle, the center line of the positioning hole and the center line of the limit pin are perpendicular to each other. The position selected by the cylindrical handle and the transmission member for circumferential fixation, the position selected by the limit pin and the positioning column on the cylindrical handle, and the axial section of the side handle position held by the hand are all in the same plane, perpendicular to the axial direction of the cylindrical handle, forming a planar internal force balance system, balancing the internal force to the greatest extent, minimizing the force transmitted to the outside, making it the easiest to use, and improving the stability of the transmission system and product-related mechanisms, and the stability and efficiency of the safety side handle's anti-torque.

[0020] In the above-mentioned power riveting tool accessory with a safety side handle, the riveting working component includes a guide nozzle assembly arranged at the front end of the cylindrical handle, a rivet nut connector is movably inserted in the guide nozzle assembly, and the front end of the rivet nut connector can extend out of the guide nozzle assembly, the transmission member is connected to the rivet nut connector, and a compression preload spring located in the guide nozzle assembly is sleeved on the rivet nut connector, the front end of the compression preload spring acts on the guide nozzle assembly, and the rear end acts on the transmission member.

[0021] In the above-mentioned power riveting tool accessory with a safety side handle, the transmission member is a split structure, and the transmission member includes a transmission tube with a channel and open ends and a plug fixedly arranged at the front end of the transmission tube. The transmission tube and the plug are made of the same or different materials, and the transmission tube and the plug have the same or different mechanical properties. The rear end of the transmission tube is closed and connected to the rotating member through a threaded structure, and when the rotating member rotates forward or reversely, it can drive the transmission tube to retreat or advance. The front end of the plug is fixedly connected to the rear end of the rivet nut connector. The rivet nut connector is provided with a compression preload spring located in the guide nozzle assembly. The front end of the compression preload spring acts on the guide nozzle assembly, and the rear end acts on the plug. A safety valve mechanism is provided in the transmission tube, and the safety valve mechanism can make the spiral pair conversion of the threaded structure occur before the rivet nut loaded on the front end of the rivet nut connector applies a force to the guide nozzle assembly.

[0022] The integrated transmission part is changed into a plug of the transmission pipe connected by a split connection, and the set screw in the original transmission part is cancelled. The structure becomes a front and rear two-stage design to improve the matching accuracy and tightness between the rivet nut connector and the transmission part, and solve the problem of difficult processing of the internal thread of the deep hole set screw in the original design. In addition, it effectively removes the mechanical constraint between the deep hole internal thread and the internal straight hole, so that a higher strength transmission design can be selected under the same outer diameter conditions, so that the strength and reliability of the transmission system are better. The outer end of the rivet nut connector here is provided with a connecting thread that can be connected to the rivet nut thread.

[0023] In the above-mentioned power riveting tool accessory with a safety side handle, the safety valve mechanism includes a valve core arranged in the transmission tube and capable of sealing in the middle of the transmission tube, and a spring arranged between the valve core and the plug, one end of the spring acts on the plug, and the other end acts on the valve core, and a valve cavity is formed between the rotating part, the transmission tube and the valve core, the volume of which can change with the axial relative position of the rotating part and the transmission tube, thereby changing the size of its internal pressure, and a medium is arranged in the valve cavity, and the medium is gas or fluid.

[0024] In the above-mentioned power riveting tool accessory with a safety side handle, the riveting working component includes a plurality of claws distributed in the circumferential direction and arranged at the front end of the transmission member, and a limiting structure capable of preventing the claws from detaching. The front end of the cylindrical handle is provided with a cylindrical guide nozzle capable of making the front end of each claw press against its rear end. A claw top column is provided between the front end of the transmission member and the rear end of each claw, which can push the transmission member to move axially forward when the rotating member is reversed, so that each claw can be radially separated under the cooperation of the cylindrical guide nozzle, and can drive the transmission member to move axially backward when the rotating member rotates forward, so that each claw can be radially retracted and then drive the retracted claw to continue to move axially backward.

[0025] A power riveting tool using a power riveting tool accessory with a safety side handle is characterized in that it includes a power mechanism, and the power riveting tool accessory with a safety side handle is provided at the power output end of the power mechanism, and the power output end is connected to a rotating part.

[0026] Compared with the existing technology, the advantages of the power riveting tool accessory with a safety side handle and the power riveting tool are: reasonable design, the safety side handle on the periphery of the cylindrical handle makes it easier to hold during riveting, and the safety side handle can lengthen the force arm to achieve greater and more effective torque resistance and save more effort. In addition, the circumferential positioning clutch structure can achieve relative locking or rotation between the cylindrical handle and the safety side handle, and the controllability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural cross-sectional view of embodiment 1 provided by the present invention;

[0028] Figure 2is a structural cross-sectional view of the other side of the first embodiment provided by the present invention;

[0029] Figure 3 It is a schematic diagram of the connection structure of the annular sleeve and the side handle provided by the present invention;

[0030] Figure 4 is a schematic structural diagram of a cylindrical handle according to the first embodiment of the present invention;

[0031] Figure 5-17 is a working state diagram of each component of the first embodiment provided by the present invention;

[0032] Fig.18 is a structural schematic diagram of Embodiment 2 provided by the present invention;

[0033] Figure 19-26 is a work flow chart of each component of the second embodiment provided by the present invention;

[0034] In the figure, a cylindrical handle 1, a rotating part 2, a transmission part 3, a threaded structure 4, a safety side handle 5, a circumferential positioning clutch structure 6, an annular sleeve 7, a side handle 8, a positioning hole 9, a positioning column 10, an elastic structure 11, a retaining structure 12, a central channel 13, a compression spring 14, a pull ring 15, a radial notch 16, a bearing 17, a limiting guide groove 18, a limiting pin 19, a guide nozzle assembly 20, a rivet nut connector 21, a compression preload spring 22, a channel 23, a transmission pipe 24, a plug 25, a safety valve mechanism 26, a valve core 27, a spring 28, a valve chamber 29, a claw body 30, a limiting structure 31, a cylindrical guide nozzle 32, and a claw body top column 33. DETAILED DESCRIPTION

[0035] Embodiment 1:

[0036] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1-4 As shown, the power riveting tool accessory with a safety side handle comprises a cylindrical handle 1, in which a rotating member 2 is inserted, which is axially positioned and circumferentially rotatably connected to the cylindrical handle 1, and a transmission member 3 is circumferentially positioned and axially movably connected to the cylindrical handle 1. The rotating member 2 and the transmission member 3 are connected by a threaded structure 4, and when the rotating member 2 rotates forward or reversely, it can drive the transmission member 3 to move backward or forward. A riveting working component is connected to the front end of the transmission member 3, which is characterized in that a safety side handle 5 is provided on the periphery of the cylindrical handle 1, which is axially positioned and circumferentially rotatably connected to the cylindrical handle 1, and a circumferentially positioned clutch structure 6 is provided between the safety side handle 5 and the cylindrical handle 1.

[0038] The safety side handle 5 on the periphery of the cylindrical handle 1 makes it easier to hold during riveting, and the safety side handle 5 can lengthen the force arm to achieve greater and more effective torque resistance and save more effort; in addition, the circumferential positioning clutch structure 6 can achieve relative locking or rotation between the cylindrical handle 1 and the safety side handle 5, which has better controllability and can also eliminate work safety hazards caused by the possible rotation and movement of the safety side handle 5.

[0039] The safety side handle 5 includes an annular sleeve 7 sleeved on the outer periphery of the cylindrical handle 1, the annular sleeve 7 is axially positioned with the cylindrical handle 1 and rotatably connected in the circumferential direction, and a side handle 8 extending to the outside of the annular sleeve 7 is provided on the annular sleeve 7. The safety side handle 5 is designed as a split-assembly annular sleeve 7 and a side handle 8, which is easy to disassemble and assemble, and is simple to operate. During operation, the hand is held on the side handle 8. The annular sleeve 7 and the side handle 8 can also be connected as one body. The circumferential positioning clutch structure 6 includes at least one positioning hole 9 arranged on the side of the cylindrical handle 1, and a positioning column 10 located on the outer periphery of the cylindrical handle 1 is movably penetrated on the annular sleeve 7, and a clutch control structure capable of controlling the axial movement of the positioning column 10 is connected to the positioning column 10. When the annular sleeve 7 rotates circumferentially around the cylindrical handle 1 until the positioning column 10 is arranged correspondingly to the positioning hole 9, the inner end of the positioning column 10 can enter the positioning hole 9 under the action of the clutch control structure, thereby circumferentially positioning the annular sleeve 7 and the cylindrical handle 1, and whether the annular sleeve 7 and the cylindrical handle 1 can be relatively circumferentially locked or relatively circumferentially rotated depends on whether the positioning column 10 has been inserted into the positioning hole 9.

[0040] Preferably, the clutch control structure includes an elastic structure 11 which is arranged between the safety side handle 5 and the positioning column 10 and can make the positioning column 10 have an axial movement tendency toward the cylindrical handle 1, and a retaining structure 12 which can keep the positioning column 10 out of the positioning hole 9. The elastic structure 11 here is used for circumferential locking between the annular sleeve 7 and the cylindrical handle 1, and the retaining structure 12 is used to keep the annular sleeve 7 and the cylindrical handle 1 able to rotate circumferentially after the positioning column 10 is out of the positioning hole 9.

[0041] The side handle 8 is a hollow structure with a central channel 13. The inner end of the central channel 13 is connected to the inner wall of the annular sleeve 7, and the outer end of the central channel 13 is located in the side handle 8 or connected to the outer end of the side handle 8. The positioning column 10 is arranged in the central channel 13, the elastic structure 11 is arranged between the positioning column 10 and the side handle 8, and the retaining structure 12 is arranged between the positioning column 10 and the side handle 8. The positioning column 10 moves axially back and forth in the central channel so that its top end enters the positioning hole 9 or disengages from the positioning hole 9 to achieve locking or disengagement conversion, and the central channel 13 can ensure the accuracy of the radial position of the positioning column 10 and can ensure the axial positioning between the positioning column 10 and the positioning hole 9.

[0042] Furthermore, the elastic structure 11 includes a compression spring 14 disposed in the central channel 13, the compression spring 14 is sleeved on the positioning column 10, and one end of the compression spring 14 acts on the positioning column 10, and the other end acts on the side handle 8. The retaining structure 12 includes a pull ring 15, the outer end of the positioning column 10 passes through the outer end of the side handle 8, the pull ring 15 is disposed at the outer end of the positioning column 10, and the outer end of the side handle 8 is provided with a radial notch 16, when the pull ring 15 is located in the radial notch 16, the inner end of the positioning column 10 can enter the positioning hole 9, and when the pull ring 15 is pulled out of the radial notch 16 and is mounted on the outer end of the side handle 8 after rotation, the inner end of the positioning column 10 is always in a state of being out of the positioning hole 9, and the positioning column 10 can be locked or out of the positioning hole 9 by pulling the pull ring 15 to control the positioning column 10, which is easy to operate.

[0043] Here, the positioning column 10 and the pull ring 15 are separated and assembled together, and can also be combined into one part, that is, the radial notch 16 of the side handle 8 is moved upward, and a boss is extended from the outer cylindrical surface of the positioning column 10 to control the up and down adjustment of the positioning column 10.

[0044] The pull ring 15 is used to control the matching relationship between the positioning column 10 in the side handle 8 and the positioning hole 9 outside the cylindrical handle 1, as well as the matching relationship between the pull ring 15 and the radial notch 16, so that the relative state of the cylindrical handle 1 and the safety side handle 5 can be freely controlled. If the front end of the positioning column 10 is inserted into the positioning hole 9 outside the cylindrical handle 1, the cylindrical handle 1 and the safety side handle 5 are almost rigidly connected. If the front end of the positioning column 10 is away from the positioning hole 9 outside the cylindrical handle 1, and the pull ring 15 is not in the radial notch 16, the cylindrical handle 1 is separated from the safety side handle 5 and can rotate relatively. If the positioning column 10 leaves the positioning hole 9 outside the cylindrical handle 1 and the top side of the pull ring 15 coincides with the bottom side of the radial notch 16, the cylindrical handle 1 and the safety side handle 5 have a certain degree of freedom. After the cylindrical handle 1 rotates a certain angle, the positioning column 10 will automatically extend into the positioning hole 9 outside the cylindrical handle 1 under the action of the compression spring 14, so that a state of almost rigid connection is achieved, which perfectly fits the actual riveting process of the rivet nut and saves effort to the greatest extent.

[0045] Furthermore, the inner end of the positioning column 10 has a smooth surface, which can minimize the wear between the positioning column 10 and the outer cylindrical surface of the cylindrical handle 1, and make the in-and-out cooperation with the external positioning hole 9 of the cylindrical handle 1 smoother. There are a plurality of positioning holes 9, and the center of each positioning hole 9 is located on the same cross section of the cylindrical handle 1; bearings 17 are respectively provided between the two ends of the annular sleeve 7 and the cylindrical handle 1, and the provision of the bearings 17 makes the relative rotation of the cylindrical handle 1 and the annular sleeve 7 smoother, and the effect of following the rotation is close to that without external connection parts.

[0046] Among them, the outer wall of the transmission member 3 is provided with at least one limiting guide groove 18 extending along the axial direction of the transmission member 3, and at least one limiting pin 19 is penetrated by the side of the cylindrical handle 1. The limiting pin 19 is arranged one by one with the limiting guide groove 18 and the inner end of the limiting pin 19 is located in the limiting guide groove 18. The central axis of the limiting pin 19 is located on the same cross-section of the cylindrical handle 1, the central axis of the positioning column 10 is coplanar with the central axis of the limiting pin 19, the number of the positioning holes 9 is two and they are symmetrically arranged, the number of the limiting pins 19 is two and they are symmetrically arranged, and when the annular sleeve 7 is in a circumferential positioning state relative to the cylindrical handle 1, the center line of the positioning hole 9 and the center line of the limiting pin 19 are perpendicular to each other. The positions selected for the circumferential fixation of the cylindrical handle 1 and the transmission member 3, the positions selected for the fixation of the limit pin 19 and the positioning column 10 on the cylindrical handle 1, and the axial cross-section of the position of the side handle 8 held by a person's hand are all in the same plane, which is perpendicular to the axial direction of the cylindrical handle 1, forming a planar internal force balance system, which balances the internal force to the greatest extent and minimizes the force transmitted to the outside, making it easiest to use, and the stability of the transmission system and product-related mechanisms, and the stability and efficiency of the safety side handle 5 in resisting torque are better.

[0047] The riveting working assembly includes a nozzle guide assembly 20 arranged at the front end of the cylindrical handle 1, a rivet nut connector 21 is movably provided in the nozzle guide assembly 20, and the front end of the rivet nut connector 21 can extend out of the nozzle guide assembly 20, the transmission member 3 is connected to the rivet nut connector 21, and a compression preload spring 22 located in the nozzle guide assembly 20 is sleeved on the rivet nut connector 21, the front end of the compression preload spring 22 acts on the nozzle guide assembly 20, and the rear end acts on the transmission member 3.

[0048] The transmission member 3 is a split structure, and the transmission member 3 includes a transmission tube 24 with a channel 23 and open ends, and a plug 25 fixed to the front end of the transmission tube 24. The transmission tube 24 and the plug 25 are made of the same or different materials, and the transmission tube 24 and the plug 25 have the same or different mechanical properties. The rear end of the transmission tube 24 is closed and connected to the rotating member 2 through a threaded structure 4, and when the rotating member 2 rotates forward or reversely, it can drive the transmission tube 24 to retreat or advance. The front end of the plug 25 is fixedly connected to the rear end of the rivet nut connector 21, and the rivet nut connector 21 is sleeved with a compression preload spring 22 located in the guide nozzle assembly 20. The front end of the compression preload spring 22 acts on the guide nozzle assembly 20, and the rear end acts on the plug 25. A safety valve mechanism 26 is provided in the transmission tube 24, and the safety valve mechanism 26 can make the spiral pair conversion of the threaded structure 4 occur before the rivet nut loaded on the front end of the rivet nut connector 21 applies a force to the guide nozzle assembly 20.

[0049] In this embodiment, the integrated transmission member 3 is changed into a plug 25 of a separately connected transmission tube 24, the set screw in the original transmission member 3 is cancelled, and the structure becomes a front and rear two-stage design to improve the matching accuracy and tightness between the rivet nut connector 21 and the transmission member 3, and solve the problem of difficult processing of the internal thread of the deep hole set screw in the original design. In addition, the mechanical constraint between the deep hole internal thread and the internal straight hole is effectively removed, so that a higher strength transmission design can be selected under the same outer diameter condition, so that the strength and reliability of the transmission system are better. The outer end of the rivet nut connector 21 is provided with a connecting thread that can be connected to the rivet nut thread.

[0050] The safety valve mechanism 26 includes a valve core 27 disposed in the transmission tube 24 and capable of blocking the middle of the transmission tube 24, and a spring 28 disposed between the valve core 27 and the plug 25. One end of the spring 28 acts on the plug 25, and the other end acts on the valve core 27. A valve cavity 29 is formed between the rotating member 2, the transmission tube 24 and the valve core 27, which can change the volume and thus change the internal pressure thereof according to the axial relative position of the rotating member 2 and the transmission tube 24. A medium is disposed in the valve cavity 29, and the medium is gas or fluid. If there is a loop system, the medium in the valve cavity 29 can also be other types of medium. In the present invention, the valve core 27 can be a rigid or elastic sphere, a hemisphere or a similar structure, or other structures such as a plate or a sleeve or a column with different concave-convex structural features on the upper surface of a column, a sleeve, or a plate without a pressure outlet structure, so as to ensure that the valve core 27 can be automatically opened and closed under the action of an external force or when the pressure of the medium in the valve cavity 29 is greater than the pressure applied to the valve core 27 by the compression preload force of the spring 28.

[0051] The working principle of this rivet nut is as follows:

[0052] Initial state, such as Figure 5 and Fig.15 As shown, the loaded rivet nut connector 21 is at the extreme position at the rear end, and the thread engagement length of the rotating member 2 and the transmission member 3 is designed so that the rivet nut connector 21 stops axial movement after following the transmission member 3 to the extreme position, and under the action of the spring 28 and the valve core 27 inside the transmission member 3, it is ensured that the threads of the transmission member 3 and the rotating member 2 are always in the initial state of engagement; at the same time, the pull ring 15 is completely in the radial notch 16 of the side handle 8, and the front end of the positioning column 10 is in the positioning hole 9 of the cylindrical handle 1 under the action of the compression spring 14, so that the cylindrical handle 1 and the safety side handle 5 are in a mutually fixed rigid connection state;

[0053] In the initial state, if Figure 6 and Fig.15As shown, the rotating member 2 is connected to the driving device, and a direction that can make the transmission member 3 extend forward is selected, so that the rotating member 2 rotates with the driving device, and the transmission member 3 is pushed forward by the action of the thread transmission until the rivet nut connector 21 is fully extended, and the rotating member 2 and the transmission member 3 are disengaged from the thread engagement;

[0054] Continue with the previous state, such as Figure 7 and Fig.16 As shown, the pull ring 15 is pulled out of the radial notch 16 of the side handle 8 as a whole, and rotated at a certain angle so that it is firmly stuck on the end surface of the side handle 8, and the positioning column 10 moves downward along with the pull ring 15, and the front end leaves the positioning hole 9 of the cylindrical handle 1, so that the cylindrical handle 1 and the safety side handle 5 are separated, and the two can rotate relative to each other;

[0055] Continue with the previous state, such as Figure 8 and Fig.16 As shown, the direction of the driving device is changed. Since the cylindrical handle 1 and the safety side handle 5 have been separated, and there is a set of bearings 17, the cylindrical handle 1 will carry the front end rivet nut connector 21 to smoothly follow the rotation of the driving device. During this process, the corresponding rivet nut can be attached to the front end thread of the rivet nut connector 21, and the rivet nut will be engaged and installed on the rivet nut connector 21 along the thread until the rivet nut is installed in place;

[0056] Continue with the previous state, such as Fig. 9 and Fig.17 As shown, the pull ring 15 is rotated and retracted into the radial notch 16 of the side handle 8. At the same time, the positioning column 10 moves upward under the action of the compression spring 14 until it touches the cylindrical handle 1. However, since the cylindrical handle 1 rotates with the driving device in the previous step, the front end of the positioning column 10 is likely to contact the outer cylindrical surface of the cylindrical handle 1. Since the threads of the rotating member 2 and the transmission member 3 are well lubricated, the outer cylindrical surface of the cylindrical handle 1 is supported by the positioning column 10, and there will be a small resistance stop stage. Continue to let the driving device drive the rotating member 2, and the cylindrical handle 1 will not rotate with it. Instead, the rivet nut connector 21 and the transmission member 3 will move backward under the action of the threads of the rotating member 2 until the end face of the rivet nut is flush with the end face of the guide nozzle assembly 20.

[0057] Continue with the previous state, such as Fig.10 and Fig.15As shown, at this time, the cylindrical handle 1 and the safety side handle 5 can rotate relative to each other, and the driving device continues to drive the rotating member 2. Since the tension of the riveted rivet nut is much greater than the resistance generated by the positioning column 10 against the outer cylindrical surface of the cylindrical handle 1, the cylindrical handle 1 will rotate with the driving device until the positioning hole 9 on the cylindrical handle 1 is aligned with the positioning column 10, and the front end of the positioning column 10 enters the positioning hole 9 of the cylindrical handle 1 under the action of the compression spring 14, so that the cylindrical handle 1 and the safety side handle 5 are in a state of almost rigid connection again, and a "click" sound is issued to remind the user that the reset has been completed to avoid injuries due to improper use;

[0058] Continue with the previous state, such as Fig.11 and Fig.15 As shown, the rivet nut has completed the pre-riveting work, the rivet nut is placed vertically into the hole of the riveted part, the side handle 8 is held and the trigger is continuously pulled, the rivet nut connector 21 and the transmission part 3 are driven by the thread of the rotating part 2 to move backward, thereby pulling and deforming the rivet nut until the riveting process is completed;

[0059] Continue with the previous state, such as Fig.12 and Fig.15 As shown, the direction of the driving device is changed to push the rivet nut connector 21 forward to a suitable length;

[0060] Continue with the previous state, such as Fig.14 and Fig.16 As shown, the pull ring 15 is pulled out of the radial notch 16 of the side handle 8, and is rotated to a certain angle to be clamped on the end surface of the side handle 8, so that the cylindrical handle 1 and the safety side handle 5 are separated again, as shown in FIG. Fig.13 and Fig.16 As shown, the driving device continues to drive the rotating member 2, and the direction of the cylindrical handle 1 is adjusted so that the front thread of the rivet nut connector 21 is not tightly fitted with the internal thread of the rivet nut, so that the friction force generated is smaller than the force generated by the thread engagement of the rotating member 2 and the transmission member 3, thereby making the rivet nut connector 21 rotate together with the cylindrical handle 1 following the driving device and loosen from the thread engagement with the rivet nut, thereby completing a riveting action;

[0061] After the last action is completed, it will return to Figure 7 If the rivet nut connector 21 extends to a suitable length, a new rivet nut can be directly inserted to perform a new riveting.

[0062] Embodiment 2:

[0063] like Fig.18As shown, the basic working principle and structural embodiment of this embodiment are basically the same, and the difference lies in that: the riveting working assembly in this embodiment includes a plurality of claw bodies 30 distributed in the circumferential direction and arranged at the front end of the transmission member 3 and a limiting structure 31 capable of preventing each claw body 30 from being separated, a cylindrical guide nozzle 32 capable of making the front end of each claw body 30 press against its rear end, a claw body top column 33 capable of pushing the transmission member 3 axially forward when the rotating member 2 is reversed so that each claw body 30 is radially separated under the cooperation of the cylindrical guide nozzle 32 is arranged between the front end of the transmission member 3 and the rear end of each claw body 30, and when the rotating member 2 rotates forward, the transmission member 3 can be driven to move axially backward so that each claw body 30 is radially retracted and then the retracted claw body 30 is driven to continue to move axially backward.

[0064] like Figure 19-26 As shown, the claw body 30 here is used for rivet pulling. In the initial state, the positioning column 10 and the positioning hole 9 are in a locked state, and then the rotating member 2 is operated to make the transmission member 3 rotate forward. At this time, the claw body 30 is separated, and then the rivet is loaded. After loading is completed, the positioning column 10 is separated from the positioning hole 9 through the pull ring 15. At this time, the cylindrical handle 1 and the safety side handle 5 are in a relative rotation state; the rotating member 2 is driven to react, and the positioning column 10 is against the outer cylindrical surface of the cylindrical handle 1 until the positioning column 10 enters the positioning hole 9. At this time, there will be a "click" sound to remind the user to avoid injury. At this time, the positioning column 10 and the positioning hole 9 are in a locked state, and the rotating member 2 is continued to be driven to rotate until the rivet pulling work is completed. When the rivet pulling work is about to begin, there is a safety reminder to improve the safety of operation.

[0065] Embodiment three:

[0066] The power riveting tool using the power riveting tool accessory with a safety side handle of implementation one or two is characterized in that it includes a power mechanism, and the power riveting tool accessory with a safety side handle is provided at the power output end of the power mechanism, and the power output end is connected to the rotating part.

[0067] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0068] Although the present invention uses more terms such as cylindrical handle 1, rotating member 2, transmission member 3, threaded structure 4, safety side handle 5, circumferential positioning clutch structure 6, annular sleeve 7, side handle 8, positioning hole 9, positioning column 10, elastic structure 11, retaining structure 12, central channel 13, compression spring 14, pull ring 15, radial notch 16, bearing 17, limiting guide groove 18, limiting pin 19, guide nozzle assembly 20, rivet nut connector 21, compression preload spring 22, channel 23, transmission pipe 24, plug 25, safety valve mechanism 26, valve core 27, spring 28, valve cavity 29, claw body 30, limiting structure 31, cylindrical guide nozzle 32, claw body top column 33, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A power riveting tool accessory with a safety side handle, comprising a cylindrical handle (1), a rotating member (2) axially positioned and circumferentially rotatably connected to the cylindrical handle (1) and a transmission member (3) circumferentially positioned and axially movably connected to the cylindrical handle (1) are inserted into the cylindrical handle (1), the rotating member (2) and the transmission member (3) are connected via a threaded structure (4), and when the rotating member (2) rotates forward or reversely, it can drive the transmission member (3) to move backward or forward, and the front end of the transmission member (3) is connected to a riveting working component, characterized in that: The outer periphery of the cylindrical handle (1) is provided with a safety side handle (5) which is axially positioned with the cylindrical handle (1) and circumferentially rotatably connected, and a circumferential positioning clutch structure (6) is provided between the safety side handle (5) and the cylindrical handle (1); the safety side handle (5) comprises an annular sleeve (7) which is sleeved on the outer periphery of the cylindrical handle (1), the annular sleeve (7) is axially positioned with the cylindrical handle (1) and circumferentially rotatably connected, the annular sleeve (7) is provided with a side handle (8) extending to the outside of the annular sleeve (7), and the annular sleeve (7) and the side handle (8) are connected as a whole; the circumferential positioning clutch structure (6) comprises at least one positioning hole (9) provided on the side of the cylindrical handle (1), the annular sleeve (7) is provided with a side handle (8) which extends to the outside of the annular sleeve (7), and the annular sleeve (7) and the side handle (8) are connected as a whole; A positioning column (10) is movably provided on the sleeve (7) and is located outside the cylindrical handle (1). The positioning column (10) is connected to a clutch control structure capable of controlling the axial movement of the positioning column (10). When the annular sleeve (7) rotates circumferentially around the cylindrical handle (1) until the positioning column (10) and the positioning hole (9) are arranged correspondingly, the inner end of the positioning column (10) can enter the positioning hole (9) under the action of the clutch control structure, thereby positioning the annular sleeve (7) and the cylindrical handle (1) circumferentially; the clutch control structure comprises an elastic structure (11) arranged between the safety side handle (5) and the positioning column (10) and capable of causing the positioning column (10) to have an axial movement tendency toward the cylindrical handle (1) and a spring structure (11) capable of causing the positioning column (10) to move axially toward the cylindrical handle (1). A retaining structure (12) for maintaining a state of being out of the positioning hole (9); the side handle (8) is a hollow structure having a central channel (13); the inner end of the central channel (13) is in communication with the inner wall of the annular sleeve (7); the outer end of the central channel (13) is located in the side handle (8) or is in communication with the outer end of the side handle (8); the positioning column (10) is arranged in the central channel (13); the elastic structure (11) is arranged between the positioning column (10) and the side handle (8); the retaining structure (12) is arranged between the positioning column (10) and the side handle (8); the outer wall of the transmission member (3) is provided with at least one limiting guide groove (18) extending along the axial direction of the transmission member (3); At least one limit pin (19) is passed through the side of the cylindrical handle (1), the limit pin (19) and the limit guide groove (18) are arranged one by one and the inner end of the limit pin (19) is located in the limit guide groove (18), the center axis of the limit pin (19) is located on the same cross section of the cylindrical handle (1), and the center axis of the positioning column (10) is coplanar with the center axis of the limit pin (19); the number of the positioning holes (9) is two and they are symmetrically arranged, the number of the limit pins (19) is two and they are symmetrically arranged, and when the annular sleeve (7) is in a circumferential positioning state relative to the cylindrical handle (1), the center line of the positioning hole (9) and the center line of the limit pin (19) are perpendicular to each other.

2. The power riveting tool accessory with a safety side handle according to claim 1, characterized in that: The elastic structure (11) comprises a compression spring (14) arranged in the central channel (13); the compression spring (14) is sleeved on the positioning column (10); one end of the compression spring (14) acts on the positioning column (10) and the other end acts on the side handle (8).

3. The power riveting tool accessory with a safety side handle according to claim 1, characterized in that: The retaining structure (12) comprises a pull ring (15), the outer end of the positioning column (10) passes through the outer end of the side handle (8), the pull ring (15) is arranged at the outer end of the positioning column (10), and the outer end of the side handle (8) is provided with a radial notch (16). When the pull ring (15) is located in the radial notch (16), the inner end of the positioning column (10) can enter the positioning hole (9), and when the pull ring (15) is pulled out of the radial notch (16) and is mounted on the outer end of the side handle (8) after rotation, the inner end of the positioning column (10) is always in a state of being out of the positioning hole (9).

4. The power riveting tool accessory with a safety side handle according to claim 2 or 3, characterized in that: The inner end surface of the positioning column (10) is smooth.

5. The power riveting tool accessory with a safety side handle according to claim 2 or 3, characterized in that: There are a plurality of positioning holes (9) and the centers of the positioning holes (9) are located on the same cross section of the cylindrical handle (1); bearings (17) are respectively provided between the two ends of the annular sleeve (7) and the cylindrical handle (1).

6. The power riveting tool accessory with a safety side handle according to any one of claims 1 to 3, characterized in that: The riveting working assembly comprises a nozzle guide assembly (20) arranged at the front end of a cylindrical handle (1); a rivet nut connector (21) is movably inserted into the nozzle guide assembly (20), and the front end of the rivet nut connector (21) can extend out of the nozzle guide assembly (20); the transmission member (3) is connected to the rivet nut connector (21); a compression preload spring (22) located in the nozzle guide assembly (20) is sleeved on the rivet nut connector (21); the front end of the compression preload spring (22) acts on the nozzle guide assembly (20), and the rear end acts on the transmission member (3).

7. The power riveting tool accessory with a safety side handle according to claim 6, characterized in that: The transmission member (3) is a split structure, comprising a transmission tube (24) having a channel (23) and open at both ends, and a plug (25) fixed to the front end of the transmission tube (24), wherein the transmission tube (24) and the plug (25) are made of the same or different materials, and the transmission tube (24) and the plug (25) have the same or different mechanical properties, and the rear end of the transmission tube (24) is closed and connected to the rotating member (2) through a threaded structure (4) and when the rotating member (2) rotates forward or reversely The transmission tube (24) can be driven to move backward or forward when the plug (25) is in motion; the front end of the plug (25) is fixedly connected to the rear end of the rivet nut connector (21); the front end of the compression preload spring (22) acts on the guide nozzle assembly (20), and the rear end acts on the plug (25); a safety valve mechanism (26) is provided in the transmission tube (24), and the safety valve mechanism (26) can cause the helical pair conversion of the threaded structure (4) to occur before the rivet nut loaded on the front end of the rivet nut connector (21) applies a force to the guide nozzle assembly (20).

8. The power riveting tool accessory with a safety side handle according to claim 7, characterized in that: The safety valve mechanism (26) comprises a valve core (27) which is arranged in the transmission tube (24) and can be sealed in the middle of the transmission tube (24), and a spring (28) which is arranged between the valve core (27) and the plug (25). One end of the spring (28) acts on the plug (25), and the other end acts on the valve core (27). A valve cavity (29) is formed between the rotating member (2), the transmission tube (24) and the valve core (27), and the volume thereof can change with the axial relative position of the rotating member (2) and the transmission tube (24), thereby changing the size of the internal pressure thereof. A medium is arranged in the valve cavity (29), and the medium is a fluid.

9. The power riveting tool accessory with a safety side handle according to any one of claims 1 to 3, characterized in that: The riveting working assembly comprises a plurality of claw bodies (30) arranged at the front end of the transmission member (3) and distributed in the circumferential direction, and a limiting structure (31) capable of preventing the claw bodies (30) from being separated. The front end of the cylindrical handle (1) is provided with a cylindrical guide nozzle (32), and the front end of the claw body (30) is pressed against the rear end of the cylindrical guide nozzle (32). A claw body top column (33) is provided between the front end of the transmission member (3) and the rear end of each claw body (30), which can push the transmission member (3) to move axially forward when the rotating member (2) is reversed, so that each claw body (30) is radially separated in cooperation with the cylindrical guide nozzle (32), and can drive the transmission member (3) to move axially backward when the rotating member (2) is rotated forward, so that each claw body (30) is radially retracted, and then drive the retracted claw body (30) to continue to move axially backward.

10. A power riveting tool using the power riveting tool accessory with a safety side handle as claimed in any one of claims 1 to 9, characterized in that: It comprises a power mechanism, at the power output end of which the power riveting tool accessory with a safety side handle is arranged, and the power output end is connected with a rotating part.

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