CN211708025U

CN211708025U - Power rivet nut tool accessory

Info

Publication number: CN211708025U
Application number: CN201921682693.1U
Authority: CN
Inventors: 郭勇; 刘锋力; 姚翔腾; 余超; 杨凌云; 刘勇; 陆建辉; 李颖; 郎金权; 何大运
Original assignee: Hangzhou Lianwei Technology Co ltd
Current assignee: Hangzhou Lianwei Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-10-20
Anticipated expiration: 2029-10-10

Abstract

The utility model belongs to the technical field of machinery, a power riveting nut instrument annex is related to. The technical problems of inconvenient processing and poor transmission system accuracy and reliability in the prior art are solved. The riveting device comprises a cylindrical handle, a rotating part connected with the cylindrical handle in an axial positioning and circumferential rotating mode and a transmission part movably connected with the cylindrical handle in an axial positioning and axial direction are arranged in the cylindrical handle in a penetrating mode, a nozzle guide assembly is arranged at the front end of the cylindrical handle, a riveting nut connector and a front end of the riveting nut connector are movably arranged in the nozzle guide assembly in a penetrating mode and can extend out of the nozzle guide assembly, and the transmission part is of a split structure. Compared with the prior art, the utility model has the advantages of reasonable in design changes the transmission of original integral type into the end cap of the transmission pipe of components of a whole that can function independently connection to solve the difficult problem of deep hole stop-payment screw thread processing in the original design.

Description

Power rivet nut tool accessory

Technical Field

The utility model belongs to the technical field of machinery, especially, relate to a nut instrument annex is riveted to power.

Background

The rivet nut is a common rivet nut, is widely applied to the industries of aerospace, war industry, automobiles, ships, construction, installation, production and manufacture and the like with riveting and fastening requirements, has very wide civil application, and has huge annual demand on various products such as rivet nut tools in related industries and domestic and foreign civil markets. The main development directions of products such as a rivet nut tool and the like are cost performance, precision, convenience, high efficiency, labor saving and the like.

In recent years, a riveting tool is changed into a power tool accessory, functions of an integral electric riveting tool and a pneumatic riveting tool are realized in terms of functions by means of power output of a power tool matched with the power tool, and the power tool is a universal tool such as an electric drill and the like, so the riveting tool accessory and the riveting tool are a valuable, meaningful and market potential development direction in the riveting tool industry, and become a new riveting tool product.

In order to overcome the defects of labor waste, heaviness, low efficiency and the like of a manual rivet nut tool, an integral pneumatic riveting tool is developed and popularized. The pneumatic riveting tool is mainly popularized and applied in the industrial market, and the market expansion of the pneumatic riveting tool product is limited due to the limitation of a compressed air source, high price and the like. The integral electric riveting nut tool has attracted wide market attention recently due to the portability, the convenience of power sources and the like, but the integral electric riveting nut tool has few optional products in domestic and foreign markets, and is mainly aimed at some industrial-grade markets due to the complex products and high unit price. The transmission part in the existing riveting nut tool is of an integrated structure, and due to the structure, the internal thread of a deep-hole set screw in the transmission part is difficult to machine, so that the precision and the tightness are affected, and the strength and the reliability of a transmission system are poor.

In response to this problem, research and study have been conducted in long-term production and life practice, and for example, chinese utility model patent discloses a riveting tool accessory and a riveting tool [ application No.: CN201720199551.4], the utility model discloses a include the tube-shape hand (hold), wear to be equipped with in the tube-shape hand (hold) to be connected with tube-shape hand (hold) axial positioning and circumferential direction and the driving medium of being connected with tube-shape hand (hold) circumferential positioning and axial swing joint, can link to each other through helicitic texture between rotation piece and the driving medium, and can drive the driving medium when rotating a corotation or reversal and retreat or go forward, the driving medium front end is equipped with the connecting piece that riveting nut can be loaded to its front end, tube-shape hand (hold) front end is equipped with leads the mouth subassembly, and the connecting piece is worn to locate lead in the mouth subassembly and the front end of connecting piece can stretch out and lead outside the mouth subassembly, be equipped with compression pretension.

The solution described above improves to some extent some of the problems of the prior art, but it also has at least the following drawbacks: the processing is inconvenient, and the strength and the reliability of a transmission system are poor.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a power riveting nut instrument annex that processing is convenient, transmission intensity and reliability are high is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the power riveting nut tool accessory comprises a cylindrical handle, a rotating piece and a driving piece, wherein the rotating piece is connected with the cylindrical handle in an axial positioning and circumferential rotating mode, the driving piece is connected with the cylindrical handle in an axial positioning and axial movable mode, the driving piece is arranged at the front end of the cylindrical handle in a penetrating mode, a riveting nut connector is movably arranged in the driving piece in a penetrating mode, the front end of the riveting nut connector can extend out of the driving piece, the driving piece is of a split structure, the driving piece comprises a driving pipe with a central channel and two open ends and a plug fixedly arranged at the front end of the driving pipe, the rear end of the driving pipe is connected with the rotating piece in a sealing mode through a threaded structure, the driving pipe can be driven to retreat or advance when the rotating piece rotates forwards or reversely, the front end of the driving pipe is sealed through the plug, the front end of the plug is fixedly connected with the rear end of the riveting nut connector, and a compression pre-tightening spring located in the guiding nozzle assembly, the front end of the compression pre-tightening spring acts on the guide nozzle assembly, the rear end of the compression pre-tightening spring acts on the plug, the transmission pipe is internally provided with a safety valve mechanism, and the safety valve mechanism enables the screw pair of the thread structure to be converted before the rivet nut loaded at the front end of the rivet nut connector exerts acting force on the guide nozzle assembly.

In the above power rivet nut tool accessory, the safety valve mechanism includes a valve core disposed in the transmission pipe and capable of plugging the middle of the transmission pipe, and a spring disposed between the valve core and the plug, one end of the spring acts on the plug, the other end acts on the valve core, a valve cavity capable of changing volume along with the axial relative position of the rotating member and the transmission pipe is formed among the rotating member, the transmission pipe and the valve core so as to change the internal pressure, a medium is disposed in the valve cavity, and the medium is a fluid.

In the power rivet nut tool accessory, the inner side of the front end of the transmission pipe is provided with the flaring section, an annular step is formed between the flaring section and the central channel, and the rear end of the plug is inserted in the flaring section and fixedly connected with the flaring section and the central channel.

In the power rivet nut tool accessory, the flaring section is provided with an internal thread, the rear end of the plug is provided with an external thread, and the internal thread is connected with the external thread.

In the power rivet nut tool accessory, the rear end of the plug is provided with a first mounting hole, and the spring is inserted into the first mounting hole.

In the power rivet nut tool accessory, the front end of the plug is connected with the rear end of the rivet nut connector into a whole or connected through a detachable structure, and the outer side of the middle of the plug is provided with a convex ring.

In foretell power rivet nut instrument annex, the end cap front end second mounting hole has and be equipped with the internal thread in the second mounting hole, rivet nut connector rear end insert in the second mounting hole and be equipped with the external screw thread riveting nut connector rear end, internal thread and external screw thread link to each other.

In the above-mentioned power rivet nut tool accessory, the driving pipe and the plug are made of the same or different materials, and the driving pipe and the plug have the same or different mechanical properties.

In the power nut riveting tool accessory, a bearing is fixedly arranged in the cylindrical handle, and the rotating piece is arranged in the bearing in a penetrating way; the driving pipe outer wall be equipped with two symmetries and set up and along the spacing guide slot of driving pipe axial extension, the tube-shape hand (hold) lateral part wear to be equipped with the spacer pin that two symmetries set up, the lower extreme that sets up and the spacer pin with spacing guide slot one-to-one be located spacing guide slot.

In the power rivet nut tool accessory, the guide nozzle component comprises a front outer sleeve and a cylindrical guide nozzle detachably and fixedly connected to the front end of the front outer sleeve, the front end of the rivet nut connector is arranged in the cylindrical guide nozzle in a penetrating manner, and the rear end of the front outer sleeve is connected with the front end of the cylindrical handle through a locking connection structure; the locking connection structure comprises a threaded connection structure arranged between the front end of the tubular handle and the rear end of the front outer sleeve, and a locking sleeve is screwed on the front outer sleeve and abuts against the end face of the front end of the tubular handle.

Compared with the prior art, the power riveting nut tool accessory has the advantages that: reasonable in design changes the end cap of the transmission pipe of components of a whole that can function independently connection into with the transmission of original integral type, has cancelled the stop screw in the original driving medium, and two segmentation designs around becoming structurally to promote the cooperation precision and the compactness between rivet nut connector and the driving medium, and solve the difficult problem of deep hole stop screw internal thread processing in the original design.

Drawings

FIG. 1 is a cross-sectional view of the structure provided by the present invention;

FIG. 2 is an enlarged view of the point A provided by the present invention;

in the figure, a cylindrical handle 1, a rotating part 2, a transmission part 3, a guide nozzle component 4, a rivet nut connector 5, a central channel 6, a transmission pipe 7, a plug 8, a thread structure 9, a compression pre-tightening spring 10, a safety valve mechanism 11, a rivet nut 12, a valve core 13, a spring 14, a valve cavity 15, an opening expanding section 16, an annular step 17, a first mounting hole 18, a convex ring 19, a second mounting hole 20, a bearing 21, a limiting guide groove 22, a limiting pin 23, a front outer sleeve 24, a cylindrical guide nozzle 25 and a locking sleeve 26.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in the figure 1-2, the power riveting nut tool accessory comprises a cylindrical handle 1, a rotating piece 2 axially positioned and connected with the cylindrical handle 1 in a circumferential rotating mode and a transmission piece 3 axially positioned and movably connected with the cylindrical handle 1 in a circumferential rotating mode are arranged in the cylindrical handle 1 in a penetrating mode, a guide nozzle assembly 4 is arranged at the front end of the cylindrical handle 1, a riveting nut connector 5 is movably arranged in the guide nozzle assembly 4 in a penetrating mode, the front end of the riveting nut connector 5 can extend out of the guide nozzle assembly 4, the transmission piece 3 is of a split structure, the transmission piece 3 comprises a transmission pipe 7 with a central channel 6 and two open ends and a plug 8 fixedly arranged at the front end of the transmission pipe 7, the rear end of the transmission pipe 7 is connected with the rotating piece 2 in a sealing mode through a threaded structure 9 and can drive the transmission pipe 7 to retreat or advance when the rotating piece 2 rotates forwards or backwards, the front end of the transmission pipe 7 is sealed by the plug 8, the front end, the rivet nut connector 5 is sleeved with a compression pre-tightening spring 10 located in the guide nozzle assembly 4, the front end of the compression pre-tightening spring 10 acts on the guide nozzle assembly 4, the rear end of the compression pre-tightening spring acts on the plug 8, a safety valve mechanism 11 and a safety valve mechanism 11 are arranged in the transmission pipe 7 and enable the spiral pair of the thread structure 9 to be converted before the rivet nut 12 loaded at the front end of the rivet nut connector 5 exerts acting force on the guide nozzle assembly 4.

The utility model discloses change into the end cap 8 of the transmission pipe 7 of split connection with the driving medium 3 of original integral type, the screw of payment in the original driving medium 3 has been cancelled, structural two segmentation designs around becoming, with cooperation precision and the compactness between promotion rivet nut connector 5 and the driving medium 3, and solve the difficult problem of screw internal thread processing of paying in the deep hole in the original design, in addition effectively remove the mechanical constraint between deep hole internal thread and the interior straight hole, make the transmission design of optional higher strength under equal external diameter condition, let transmission system's intensity and reliability better, the outer end of rivet nut connector 5 here is equipped with can with the connecting thread who rivets 12 threaded connection of nut.

The safety valve mechanism 11 comprises a valve core 13 arranged in the transmission pipe 7 and capable of being plugged in the middle of the transmission pipe 7 and a spring 14 arranged between the valve core 13 and the plug 8, one end of the spring 14 acts on the plug 8, the other end of the spring acts on the valve core 13, a valve cavity 15 capable of changing volume along with the axial relative position of the rotating piece 2 and the transmission pipe 7 is formed among the rotating piece 2, the transmission pipe 7 and the valve core 13, so that the internal pressure of the valve cavity is changed, a medium is arranged in the valve cavity 15, and the medium is fluid. If there is the return circuit system, the medium in the valve pocket 15 also can be other types of medium, the utility model discloses well case 13 can adopt rigidity or elastic sphere, hemispheroid or similar structure, or other cylinder, sleeve pipe that do not have pressure outlet structure, dull and stereotyped upper surface have structures such as dull and stereotyped or sleeve pipe or cylinder of different concave-convex structure characteristics, guarantee under the external force or the valve pocket 15 inside medium pressure be greater than the compression pretightning force of spring 14 can carry out the automatic start-stop action when loading the pressure on case 13.

Furthermore, the inner side of the front end of the transmission pipe 7 is provided with an expanding section 16, an annular step 17 is formed between the expanding section 16 and the central channel 6, the rear end of the plug 8 is inserted into the expanding section 16 and fixedly connected with the expanding section 16, and the annular step 17 formed between the expanding section 16 and the central channel 6 can enable the plug 8 to play a limiting role after being inserted into the transmission pipe 7.

Flaring section 16 has the internal thread, and end cap 8 rear end has the external screw thread, and the internal thread links to each other with the external screw thread, and flaring section 16 and end cap 8 link to each other through internal and external screw thread, and not only joint strength is high to can improve the convenience of being connected of driving pipe 7 and end cap 8. The rear end of the plug 8 is provided with a first mounting hole 18, the spring 14 is inserted into the first mounting hole 18, and the circumferential inner side of the first mounting hole 18 is in clearance connection or tight connection with the circumferential outer side of the spring 14, so that the radial positioning of the spring 14 is realized, and excessive deflection generated when the spring 14 is stressed is avoided.

8 front ends of end caps and 5 rear ends of rivet nut connector link as an organic whole or link to each other through detachable construction, and 8 middle parts of end caps outside has bulge loop 19, and bulge loop 19 here can let end caps 8 play the positioning action inserting in driving pipe 7 in-process to support after inserting and can improve the stability of end caps 8 front end at driving pipe 7 front end, can also provide one in addition for compression pretension spring 10 and support and lean on the position.

Furthermore, the front end of the plug 8 is provided with a second mounting hole 20, an internal thread is arranged in the second mounting hole 20, the rear end of the rivet nut connector 5 is inserted into the second mounting hole 20, an external thread is arranged at the rear end of the rivet nut connector 5, the internal thread is connected with the external thread, and the rivet nut 12 connector and the plug 8 are connected through the internal thread and the external thread so that the rivet nut connector 5 can replace the rivet nut connectors 5 with different sizes according to actual working requirements, so that the applicability is better. The transmission pipe 7 and the plug 8 are made of the same or different materials, the transmission pipe 7 and the plug 8 have the same or different mechanical properties, and different materials, treatment processes, surface treatment and the like can be selected according to structural requirements.

A bearing 21 is fixedly arranged in the cylindrical handle 1, and the rotating part 2 is arranged in the bearing 21 in a penetrating way; the outer wall of the transmission pipe 7 is provided with two limiting guide grooves 22 which are symmetrically arranged and axially extend along the transmission pipe 7, two limiting pins 23 which are symmetrically arranged are arranged on the side portion of the cylindrical handle 1 in a penetrating mode, the limiting pins 23 are arranged in the limiting guide grooves 22 in a one-to-one correspondence mode with the limiting guide grooves 22, the lower ends of the limiting pins 23 are located in the limiting guide grooves 22, the limiting guide grooves 22 and the limiting pins 23 can achieve circumferential positioning of the transmission pipe 7, and the transmission part 3 is in a locking state in the circumferential direction when the rotation part 2 drives the transmission pipe 7 to move axially. Here, the rotor 2 is connected in an axially and radially limited manner by means of bearings 21.

In addition, the guide nozzle assembly 4 comprises a front outer sleeve 24 and a cylindrical guide nozzle 25 detachably fixedly connected to the front end of the front outer sleeve 24, the front end of the rivet nut connector 5 is arranged in the cylindrical guide nozzle 25 in a penetrating manner, and the rear end of the front outer sleeve 24 is connected with the front end of the cylindrical handle 1 through a locking connection structure; the locking connection structure comprises a threaded connection structure arranged between the front end of the cylindrical handle 1 and the rear end of the front outer sleeve 24, and a locking sleeve 26 is screwed on the front outer sleeve 24 and abuts against the end face of the front end of the cylindrical handle 1. The tubular nozzle 25 is detachable so as to be easily replaced, and the locking sleeve 26 can enhance the rigidity of the connection between the tubular nozzle 25 and the tubular handle 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the cylindrical handle 1, the rotating member 2, the transmission member 3, the nozzle assembly 4, the rivet nut connector 5, the central channel 6, the transmission pipe 7, the plug 8, the thread structure 9, the compression pre-tightening spring 10, the safety valve mechanism 11, the rivet nut 12, the valve core 13, the spring 14, the valve cavity 15, the flared section 16, the annular step 17, the first mounting hole 18, the convex ring 19, the second mounting hole 20, the bearing 21, the limiting guide groove 22, the limiting pin 23, the front outer sleeve 24, the cylindrical nozzle 25, the locking sleeve 26, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a nut instrument annex is riveted to power, includes tube-shape hand (1), wears to be equipped with in tube-shape hand (1) and rotates piece (2) and driving medium (3) with tube-shape hand (1) circumference location and axial swing joint of being connected with tube-shape hand (1) axial positioning and circumferential direction, tube-shape hand (1) front end be equipped with and lead mouth subassembly (4), lead mouth subassembly (4) in the activity wear to be equipped with rivet nut connector (5) and rivet nut connector (5) the front end can stretch out and lead outside mouth subassembly (4), a serial communication port, driving medium (3) be the components of a whole that can function independently structure, driving medium (3) including having open transmission pipe (7) in center channel (6) and both ends and setting firmly end cap (8) at transmission pipe (7) front end, transmission pipe (7) rear end and rotation piece (2) seal and link to each other through helicitic texture (9) and can drive transmission pipe (7) after rotating piece (2) when rotating piece (2) or reversal and rotate Move back or advance, end cap (8) seal transmission pipe (7) front end, end cap (8) front end and rivet nut connector (5) rear end solid even, rivet nut connector (5) on the cover be equipped with and be located the compression pretension spring (10) of leading in mouth subassembly (4), the front end of compression pretension spring (10) be used in leading mouth subassembly (4), the rear end is used in end cap (8), transmission pipe (7) in be equipped with relief valve mechanism (11) and enable the screw pair conversion of helicitic texture (9) takes place before loading rivet nut (12) of nut connector (5) front end and exert the effort to leading mouth subassembly (4).

2. The power rivet nut tool accessory of claim 1, characterized in that the safety valve mechanism (11) comprises a valve core (13) arranged in the transmission pipe (7) and capable of blocking the middle of the transmission pipe (7) and a spring (14) arranged between the valve core (13) and the plug (8), one end of the spring (14) acts on the plug (8) and the other end acts on the valve core (13), a valve cavity (15) capable of changing volume along with the axial relative position of the rotating piece (2) and the transmission pipe (7) so as to change the internal pressure is formed among the rotating piece (2), the transmission pipe (7) and the valve core (13), a medium is arranged in the valve cavity (15), and the medium is a fluid.

3. The power rivet nut tool attachment according to claim 2, characterized in that the driving tube (7) has a flared section (16) inside the front end, an annular step (17) is formed between the flared section (16) and the central channel (6), and the rear end of the plug (8) is inserted into the flared section (16) and fixedly connected with the same.

4. A power rivet nut tool attachment according to claim 3, characterized in that said flared section (16) has internal threads and said back end of said plug (8) has external threads, said internal threads being connected to said external threads.

5. A power rivet nut tool attachment according to claim 3, characterized in that said plug (8) has a first mounting hole (18) at a rear end thereof, said spring (14) being inserted into said first mounting hole (18).

6. A power rivet nut tool attachment according to claim 2, characterized in that the front end of the plug (8) is connected with the rear end of the rivet nut connector (5) as a whole or by a detachable structure, and the outer side of the middle of the plug (8) is provided with a convex ring (19).

7. The power rivet nut tool accessory of claim 6, characterized in that the front end of the plug (8) is provided with a second mounting hole (20) and an internal thread is arranged in the second mounting hole (20), the rear end of the rivet nut connector (5) is inserted into the second mounting hole (20) and an external thread is arranged at the rear end of the rivet nut connector (5), and the internal thread is connected with the external thread.

8. A power rivet nut tool attachment according to any one of claims 1-7, characterized in that the driver tube (7) and the plug (8) are made of the same or different materials, and the driver tube (7) and the plug (8) have the same or different mechanical properties.

9. The power rivet nut tool attachment according to any one of claims 1-7, characterized in that a bearing (21) is fixedly arranged in the cylindrical handle (1), and the rotating member (2) is arranged in the bearing (21) in a penetrating way; the outer wall of the transmission pipe (7) is provided with two limiting guide grooves (22) which are symmetrically arranged and axially extend along the transmission pipe (7), the side part of the cylindrical handle (1) is provided with two limiting pins (23) which are symmetrically arranged in a penetrating manner, and the lower ends of the limiting pins (23) which are arranged in a one-to-one correspondence manner with the limiting guide grooves (22) are located in the limiting guide grooves (22).

10. The power rivet nut tool accessory according to any one of claims 1-7, characterized in that the guide nozzle assembly (4) comprises a front outer sleeve (24) and a cylindrical guide nozzle (25) detachably fixed at the front end of the front outer sleeve (24), the front end of the rivet nut connector (5) is inserted into the cylindrical guide nozzle (25), and the rear end of the front outer sleeve (24) is connected with the front end of the cylindrical handle (1) through a locking connection structure; the locking connection structure comprises a threaded connection structure arranged between the front end of the cylindrical handle (1) and the rear end of the front outer sleeve (24), and a locking sleeve (26) is screwed on the front outer sleeve (24) and abuts against the end face of the front end of the cylindrical handle (1) through the locking sleeve (26).