Internal force balance power riveting tool accessories

Abstract

The present invention provides an internal force balanced power riveting tool accessory. It solves the existing technical problems. The internal force balanced power riveting tool accessory 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 front end of the transmission member is connected to the riveting working component, the outer wall of the transmission member is provided with at least one limit guide groove extending along the axial direction of the transmission member, the side of the cylindrical handle is provided 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 cylindrical handle is provided with a side handle extending to the outside of the cylindrical handle, the central axis of the side handle and the central axis of each limit pin are located on the same cross section of the cylindrical handle to achieve internal force balance. The present invention has the advantages of being able to achieve internal force balance of the riveting tool.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to an internal force balanced power riveting tool accessory. 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 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. Existing riveting tools cannot achieve internal force balance during riveting, the force transmitted to the outside is large, and the stability of the transmission system and product-related mechanisms is poor.

[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 solution has improved some of the problems of the prior art to a certain extent. However, the solution still has at least the following defects: the riveting tool cannot achieve internal force balance, and the stability of the transmission system and product-related mechanisms is poor. Summary of the invention

[0007] The object of the present invention is to provide an internal force balanced power riveting tool accessory capable of achieving internal force balance in view of the above problems.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: the internal force balanced power riveting tool accessory comprises a cylindrical handle, 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 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, it can drive the transmission member to retreat or advance, the front end of the transmission member is connected to the riveting working component, the outer wall of the transmission member is provided with at least one limiting guide groove extending along the axial direction of the transmission member, the side part of the cylindrical handle is provided with at least one limiting pin, the limiting pin and the limiting guide groove are arranged one by one and the inner end of the limiting pin is located in the limiting guide groove, the cylindrical handle is provided with a side handle extending to the outside of the cylindrical handle, the central axis of the side handle and the central axis of each limiting pin are located on the same cross section of the cylindrical handle to achieve internal force balance.

[0009] In the above-mentioned internal force balanced power riveting tool accessory, there are two limit guide grooves and they are symmetrically arranged, there are two limit pins and they are symmetrically arranged, the central axes of the two limit pins are located on the same straight line and the central axis of the side handle is perpendicular to the straight line.

[0010] In the above-mentioned internal force balance type power riveting tool accessory, the side handle includes a positioning sleeve arranged on the outer periphery of the cylindrical handle, and the positioning sleeve is fixed with a side handle body. The side handle is composed of the positioning sleeve and the side handle body, which is convenient for installation and removal. When in use, the side handle body can be held by hand to lengthen the force arm, thereby achieving the purpose of labor saving and torque resistance.

[0011] In the above-mentioned internal force balance type power riveting tool accessories, the riveting working assembly includes a nozzle guide assembly arranged at the front end of a cylindrical handle, a rivet nut connector is movably provided in the nozzle guide assembly, and the front end of the rivet nut connector can extend out of the nozzle guide assembly, the transmission member is connected to the rivet nut connector, and a compression preload spring located in the nozzle guide assembly is sleeved on the rivet nut connector, and the front end of the compression preload spring acts on the nozzle guide assembly, and the rear end acts on the transmission member; the positioning sleeve is axially positioned with the cylindrical handle and circumferentially rotatably connected, and a circumferential positioning clutch structure is provided between the positioning sleeve and the cylindrical handle. The circumferential positioning clutch structure can realize relative locking or rotation between the cylindrical handle and the side handle, with better controllability, and can also eliminate the potential safety hazards caused by the possible rotation and movement of the side handle.

[0012] In the above-mentioned internal force balance power riveting tool accessory, the circumferential positioning clutch structure includes at least one positioning hole provided on the side of the cylindrical handle, the positioning sleeve is movably provided with a positioning column located on the periphery of 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 positioning 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 positioning sleeve and the cylindrical handle circumferentially. Whether the positioning sleeve and the cylindrical handle can be relatively locked or relatively rotated circumferentially depends on whether the positioning column has been inserted into the positioning hole.

[0013] In the above-mentioned internal force balance power riveting tool accessory, the clutch control structure includes an elastic structure arranged between the side handle body and the positioning column and capable of making the positioning column 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 end surface of the inner end of the positioning column is smooth. The elastic structure here is used for circumferential locking between the positioning sleeve and the cylindrical handle, while the retaining structure is used to maintain the circumferential rotation between the positioning sleeve and the cylindrical handle after the positioning column is out of the positioning hole; and the end surface of the inner end of the positioning column can be smooth so that the wear of the outer cylindrical surface of the cylindrical handle is minimized, and the entry and exit cooperation with the outer positioning hole of the cylindrical handle is smoother.

[0014] In the above-mentioned internal force balance type power riveting tool accessory, the side handle body is a hollow structure with a central channel, the inner end of the central channel is connected with the inner wall of the positioning sleeve, the outer end of the central channel is located in the side handle body or is connected with the outer end of the side handle body, the positioning column is arranged in the central channel, the elastic structure is arranged between the positioning column and the side handle body, and the retaining structure is arranged between the positioning column and the side handle body. 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.

[0015] In the above-mentioned internal force balanced power riveting tool accessory, 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 body; the retaining structure includes a pull ring, the outer end of the positioning column passes through the outer end of the side handle body, the pull ring is arranged at the outer end of the positioning column, and the outer end of the side handle body 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 body after rotation, the inner end of the positioning column is always in a state of being out of the positioning hole.

[0016] In the above-mentioned internal force balanced power riveting tool accessories, the transmission member is a split structure, and the transmission member includes a transmission tube with a channel and open ends and a plug fixed to 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 can drive the transmission tube to retreat or advance when the rotating member rotates forward or reversely. The plug closes the front end of the transmission tube, and the front end of the plug is fixedly connected to the rear end of 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 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.

[0017] In the above-mentioned internal force balanced power riveting tool accessory, 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, which can change its volume and thus change its internal pressure as the axial relative position of the rotating part and the transmission tube changes, and a medium is provided in the valve cavity, and the medium is a fluid.

[0018] In the above-mentioned internal force balanced power riveting tool accessory, the riveting working assembly includes a plurality of claws distributed in the circumferential direction and a limiting structure capable of preventing the claws from detaching, and the front end of the cylindrical handle is provided with a cylindrical guide nozzle, and the front end of the claw can be pressed against the rear end of the cylindrical guide nozzle, and a claw top column is provided between the front end of the transmission member and the rear end of each claw when the rotating member is reversed, so that each claw can be radially separated under the cooperation of the cylindrical guide nozzle, and when the rotating member rotates forward, it can drive the transmission member to move axially backward, so that each claw can be radially retracted and then drive the retracted claw to continue to move axially backward.

[0019] In the above-mentioned internal force balanced power riveting tool accessory, the side handle is detachably fixedly connected to the cylindrical handle; or the side handle is integrated with the cylindrical handle; or the side handle is axially positioned and circumferentially rotatably connected to the cylindrical handle, and a circumferential positioning clutch structure is provided between the side handle and the cylindrical handle.

[0020] Compared with the existing technology, the advantages of this internal force balanced power riveting tool accessory are: reasonable design, the position selected for the circumferential fixation of the cylindrical handle and the transmission part, the position selected for the fixation of the limit pin and the limit guide groove on the cylindrical handle, and the axial cross-section of the side handle body held by the human 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 easiest to use, and the stability of the transmission system and product-related mechanisms is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural cross-sectional view provided by the present invention;

[0022] Figure 2 is a structural cross-sectional view of the other side provided by the present invention;

[0023] Figure 3 It is a schematic diagram of the connection between the side handle and the positioning sleeve provided by the present invention;

[0024] Figure 4 It is a schematic diagram of the cylindrical handle provided by the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the pull riveting work provided by the present invention;

[0026] Figure 6 It is a schematic diagram of another state structure of the riveting operation provided by the present invention;

[0027] In the figure, there are a cylindrical handle 1, a rotating part 2, a transmission part 3, a threaded structure 4, a side handle 5, a circumferential positioning clutch structure 6, a positioning sleeve 7, a side handle body 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 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

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1-4As shown, the internal force balanced power riveting tool accessory comprises a cylindrical handle 1, in which a rotating member 2 which is axially positioned and circumferentially rotatably connected to the cylindrical handle 1 and a transmission member 3 which is circumferentially positioned and axially movably connected to the cylindrical handle 1 are inserted, 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 retreat or advance, the front end of the transmission member 3 is connected to the riveting working component, 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 limiting pin 19 is inserted into the side of the cylindrical handle 1, the limiting pin 19 is arranged one-to-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 cylindrical handle 1 is provided with a side handle 5 extending to the outside of the cylindrical handle 1, the central axis of the side handle 5 and the central axis of each limiting pin 19 are all located on the same cross section of the cylindrical handle 1 to achieve internal force balance.

[0030] The positions selected for circumferential fixation of the cylindrical handle 1 and the transmission member 3, the positions selected for fixing of the limit pin 19 and the limit guide groove 18 on the cylindrical handle 1, and the axial cross-section of the position of the side handle body 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, balancing the internal force to the greatest extent, minimizing the force transmitted to the outside, making it easiest to use, and the transmission system and product-related mechanisms have good stability.

[0031] Preferably, there are two limit guide grooves 18 and they are symmetrically arranged, there are two limit pins 19 and they are symmetrically arranged, the central axes of the two limit pins 19 are located on the same straight line and the central axis of the side handle 5 is perpendicular to the straight line, the side handle 5 includes a positioning sleeve 7 arranged on the outer periphery of the cylindrical handle 1, and a side handle body 8 is fixed on the positioning sleeve 7. The side handle 5 is composed of the positioning sleeve 7 and the side handle body 8, which is convenient for installation and disassembly. When in use, holding the side handle body 8 can lengthen the force arm, thereby achieving the purpose of saving effort and resisting torque.

[0032] The riveting working assembly includes a guide nozzle assembly 20 arranged at the front end of the cylindrical handle 1, a rivet nut connector 21 is movably inserted in the guide nozzle assembly 20, and the front end of the rivet nut connector 21 can extend out of the guide nozzle assembly 20, the transmission member 3 is connected to the rivet nut connector 21, and a compression preload spring 22 located in the guide nozzle assembly 20 is sleeved on 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 transmission member 3; the positioning sleeve 7 is axially positioned with the cylindrical handle 1 and is circumferentially rotatably connected, and a circumferential positioning clutch structure 6 is provided between the positioning sleeve 7 and the cylindrical handle 1, and the circumferential positioning clutch structure 6 can realize relative locking or rotation between the cylindrical handle 1 and the side handle 5, with better controllability, and can also eliminate the work safety hazards caused by the possible rotation and movement of the side handle 5.

[0033] 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 positioning 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 positioning 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 positioning sleeve 7 and the cylindrical handle 1, and whether the positioning 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.

[0034] Furthermore, the clutch control structure includes an elastic structure 11 arranged between the side handle body 8 and the positioning column 10 and capable of making the positioning column 10 have an axial movement tendency toward the cylindrical handle 1, and a retaining structure 12 capable of keeping the positioning column 10 out of the positioning hole 9; the end surface of the inner end of the positioning column 10 is smooth, and the elastic structure 11 here is used for circumferential locking between the positioning sleeve 7 and the cylindrical handle 1, while the retaining structure 12 is used to maintain the circumferential rotation between the positioning sleeve 7 and the cylindrical handle 1 after the positioning column 10 is out of the positioning hole 9; and the end surface of the inner end of the positioning column 10 is smooth so that the wear between it and the outer cylindrical surface of the cylindrical handle 1 is minimized, and the entry and exit cooperation with the external positioning hole 9 of the cylindrical handle 1 is smoother.

[0035] The side handle body 8 is a hollow structure with a central channel 13. The inner end of the central channel 13 is connected with the inner wall of the positioning sleeve 7, and the outer end of the central channel 13 is located in the side handle body 8 or connected with the outer end of the side handle body 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 body 8, and the retaining structure 12 is arranged between the positioning column 10 and the side handle body 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.

[0036] Furthermore, the elastic structure 11 includes a compression spring 14 arranged 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 body 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 body 8, the pull ring 15 is arranged at the outer end of the positioning column 10, and the outer end of the side handle body 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 body 8 after rotation, the inner end of the positioning column 10 is always in a state of being out of the positioning hole 9.

[0037] The pull ring 15 is used to control the matching relationship between the positioning column 10 in the side handle body 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 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 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 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 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.

[0038] 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 fixedly arranged at 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 plug 25 closes the front end of the transmission tube 24, and 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 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.

[0039] The integrated transmission part 3 is changed into a plug 25 of a transmission tube 24 connected separately, and the set screw in the original transmission part 3 is cancelled. 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 part 3, 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 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.

[0040] In addition, the safety valve mechanism 26 includes a valve core 27 arranged in the transmission tube 24 and capable of sealing in the middle of the transmission tube 24, and a spring 28 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 part 2, the transmission tube 24 and the valve core 27, which can change its volume and thus change its internal pressure as the axial relative position of the rotating part 2 and the transmission tube 24 changes. A medium is provided in the valve cavity 29, and the medium is a fluid.

[0041] like Figure 5 and 6 As shown, or, the riveting working assembly includes a plurality of claw bodies 30 distributed in the circumferential direction and a limiting structure 31 that can prevent each claw body 30 from being separated, and a cylindrical guide nozzle 32 is provided at the front end of the cylindrical handle 1. The front end of the claw body 30 can be 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 under the cooperation of the cylindrical guide nozzle 32, and when the rotating member 2 rotates forward, it can drive the transmission member 3 to move axially backward, so that each claw body 30 is radially retracted, and then drive the retracted claw body 30 to continue to move axially backward. The claw body 30 here is used for rivet pulling. In the initial state, the positioning sleeve 7 and the side handle body 8 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, the rotating member 2 is driven to reverse, and the rotating member 2 is continued to be driven to rotate until the rivet pulling work is completed. In addition, the side handle 5 is detachably fixedly connected to the cylindrical handle 1; or the side handle 5 is connected to the cylindrical handle 1 as a whole; or the side handle 5 is axially positioned and circumferentially rotatably connected to the cylindrical handle 1, and a circumferential positioning clutch structure 6 is provided between the side handle 5 and the cylindrical handle 1.

[0042] 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.

[0043] Although the present invention uses more terms such as cylindrical handle 1, rotating member 2, transmission member 3, threaded structure 4, side handle 5, circumferential positioning clutch structure 6, positioning sleeve 7, side handle body 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, 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. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An internal force balanced power riveting tool accessory, 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 provided in the cylindrical handle (1), wherein 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, the transmission member (3) can be driven. Backward or forward, the front end of the transmission member (3) is connected to the riveting working assembly, characterized in that 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 the side of the cylindrical handle (1) is penetrated with at least one limiting pin (19), the limiting pin (19) and the limiting guide groove (18) are arranged one-to-one and the inner end of the limiting pin (19) is located in the limiting guide groove (18), and the cylindrical handle (1) is provided with a side handle (5) extending to the outside of the cylindrical handle (1), and the central axis of the side handle (5) and the central axis of each limiting pin (19) are located on the same cross section of the cylindrical handle (1) to achieve internal force balance; The limiting guide grooves (18) are provided in two pieces and are symmetrically arranged, the limiting pins (19) are provided in two pieces and are symmetrically arranged, the central axes of the two limiting pins (19) are located on the same straight line and the central axis of the side handle (5) is perpendicular to the straight line; The side handle (5) comprises a positioning sleeve (7) arranged on the outer periphery of the cylindrical handle (1), and a side handle body (8) is fixedly arranged on the positioning sleeve (7); The positioning sleeve (7) is axially positioned with the cylindrical handle (1) and is circumferentially rotatably connected. A circumferential positioning clutch structure (6) is provided between the positioning sleeve (7) and the cylindrical handle (1). The circumferential positioning clutch structure (6) can achieve relative locking or rotation between the cylindrical handle (1) and the side handle (5), thereby improving controllability and eliminating work safety hazards caused by the possible rotation and movement of the side handle (5).

2. The internal force balanced power riveting tool accessory according to claim 1, 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).

3. The internal force balanced power riveting tool accessory according to claim 2, characterized in that: The circumferential positioning clutch structure (6) comprises at least one positioning hole (9) provided on the side of the cylindrical handle (1); a positioning column (10) located on the periphery of the cylindrical handle (1) is movably penetrated on the positioning sleeve (7); a clutch control structure capable of controlling the axial movement of the positioning column (10) is connected to the positioning column (10); when the positioning 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 positioning sleeve (7) and the cylindrical handle (1) circumferentially.

4. The internal force balanced power riveting tool accessory according to claim 3 is characterized in that: The clutch control structure comprises an elastic structure (11) arranged between the side handle body (8) 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 retaining structure (12) capable of keeping the positioning column (10) in a state of being separated from the positioning hole (9); the end surface of the inner end of the positioning column (10) is smooth.

5. The internal force balanced power riveting tool accessory according to claim 4, characterized in that: The side handle body (8) is a hollow structure having a central channel (13); the inner end of the central channel (13) is connected to the inner wall of the positioning sleeve (7); the outer end of the central channel (13) is located inside the side handle body (8) or is connected to the outer end of the side handle body (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 body (8); and the retaining structure (12) is arranged between the positioning column (10) and the side handle body (8).

6. The internal force balanced power riveting tool accessory according to claim 4, characterized in that: The elastic structure (11) comprises a compression spring (14) arranged in the central channel (13), the compression spring (14) being sleeved on the positioning column (10), and one end of the compression spring (14) acting on the positioning column (10), and the other end acting on the side handle body (8); the retaining structure (12) comprises a pull ring (15), the outer end of the positioning column (10) passing through the outer end of the side handle body (8), the pull ring (15) being arranged on the outer end of the positioning column (10), and the outer end of the side handle body (8) being 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 mounted on the outer end of the side handle body (8) after rotation, the inner end of the positioning column (10) is always in a state of being separated from the positioning hole (9).

7. The internal force balanced power riveting tool accessory according to any one of claims 2 to 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), the transmission tube (24) and the plug (25) being made of the same or different materials, the transmission tube (24) and the plug (25) having the same or different mechanical properties, the rear end of the transmission tube (24) being closed and connected to the rotating member (2) via a threaded structure (4), and being able to drive the transmission tube (24) when the rotating member (2) rotates forward or reversely. When moving backward or forward, the plug (25) closes the front end of the transmission tube (24), 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), the transmission tube (24) is provided with a safety valve mechanism (26), and the safety valve mechanism (26) can make the helical 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).

8. The internal force balanced power riveting tool accessory 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), and a valve chamber (29) is formed between the rotating member (2), the transmission tube (24) and the valve core (27), the volume of which 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, and a medium is provided in the valve chamber (29), and the medium is a fluid.

9. The internal force balanced power riveting tool accessory according to claim 1, 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) can be pressed against the rear end of the cylindrical guide nozzle (32). A claw body push 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) rotates reversely, thereby radially separating the claw bodies (30) in cooperation with the cylindrical guide nozzle (32), and can drive the transmission member (3) to move axially backward when the rotating member (2) rotates forwardly, thereby radially retracting the claw bodies (30) and then driving the retracted claw bodies (30) to continue to move axially backward.

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