Riveting tool for riveting nut

Abstract

The utility model discloses a pull riveting tool for a pull riveting nut. The pull riveting tool comprises a transmission handle, an integrated sheath and a screw assembly, the transmission handle comprises a handle sleeve and a transmission shaft, the transmission shaft penetrates through the handle sleeve and is rotationally connected with the handle sleeve, the rear end of the transmission shaft can be connected with a power source, and the cross section of the front end of the transmission shaft is of a non-circular structure. The screw assembly comprises a screw, the rear end of the screw is detachably connected with the front end of the transmission shaft, and the cross section of the screw is matched with the cross section of the front end of the transmission shaft. The integrated sheath comprises a sheath body and a transmission sleeve, the rear end of the sheath body is detachably connected with the handle sleeve, the transmission sleeve is rotationally connected into the sheath body and can be backwards arranged at the front end of the transmission shaft and the rear end of the screw in a sleeving mode to prevent relative rotation between the transmission shaft and the screw, and the front end of the screw protrudes to the front side of the sheath body and is used for being connected with a rivet nut. According to the rivet pulling tool for the rivet pulling nut, the threaded rod is not prone to loosening, and dismounting is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of rivet nut installation tools, and in particular to a rivet nut riveting tool. Background Technology

[0002] Rivet nuts, also known as rivet nuts, rivet caps, or instant rivet caps, are a new type of fastener specifically designed for thin sheets. The working principle of rivet nuts is that a rivet tool (such as an electric, pneumatic, or manual rivet gun) pulls the rivet nut, causing it to compress longitudinally and creating a protruding deformation on the end surface, thereby clamping the objects being riveted and achieving the riveting effect.

[0003] Existing riveting tools, as shown in patent application number CN202321884615.6, include a transmission device and a pull screw. One end of the pull screw is screwed into the transmission device by a thread, and the other end of the pull screw is used to connect with the rivet nut to be riveted. In use, an external power mechanism drives the pull screw to rotate through the transmission device. After riveting is completed, the pull screw reverses and disengages from the rivet nut.

[0004] The existing riveting tools have a pull screw that is threaded onto the transmission device. During use, torque is transmitted through the thread. The pull screw is prone to detaching from the transmission device when rotating in both directions. In addition, the existing pull screw requires special tools to disassemble, which is inconvenient. Utility Model Content

[0005] To address the shortcomings of existing riveting tools, such as easy loosening of the pull screw and inconvenient disassembly, this utility model proposes a riveting nut tool that prevents the screw from loosening and facilitates disassembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rivet nut riveting tool includes a transmission handle, an integrated sheath, and a screw assembly. The transmission handle includes a handle sleeve and a transmission shaft, the transmission shaft passing through the handle sleeve and rotatably connected to it. The rear end of the transmission shaft can be connected to a power source, and the front end of the transmission shaft has a non-circular cross-section. The screw assembly includes a screw, the rear end of which is detachably connected to the front end of the transmission shaft, and its cross-section is adapted to the cross-section of the front end of the transmission shaft. The integrated sheath includes a sheath and a transmission sleeve, the rear end of which is detachably connected to the handle sleeve. The transmission sleeve is rotatably connected within the sheath and can be fitted backward onto the front end of the transmission shaft and the rear end of the screw to prevent relative rotation between the transmission shaft and the screw. The front end of the screw protrudes to the front side of the sheath for connection with the rivet nut.

[0008] With the above setup, firstly, the torque is mainly transmitted between the drive shaft and the screw through the transmission sleeve, making the screw less prone to loosening; secondly, since the torque is mainly transmitted through the transmission sleeve, the front end of the drive shaft and the rear end of the screw do not need to be completely locked, making it easier to remove the screw without the need for special tools.

[0009] Furthermore, the transmission handle also includes a thrust bearing, which is axially locked in the handle sleeve. The transmission shaft passes through the thrust bearing, and a limiting boss is provided along the outer circumference of the transmission shaft, which abuts against the front side of the thrust bearing.

[0010] With the above configuration, the handle sleeve is supported by the drive shaft via a thrust bearing, resulting in less resistance when the drive shaft rotates relative to the handle sleeve.

[0011] Furthermore, the transmission handle also includes a ball bearing, the outer ring of which is locked in the handle sleeve, and the transmission shaft passes through the ball bearing, with the outer circumference of the transmission shaft engaging with the inner ring of the ball bearing.

[0012] The above settings increase the radial stability of the drive shaft and reduce its rotational resistance.

[0013] Furthermore, the screw includes a first threaded part, a transmission part, and a second threaded part. The first threaded part is coaxially and fixedly connected to the second threaded part through the transmission part. A threaded hole is provided at the front end of the transmission shaft. The first threaded part is threadedly connected to the threaded hole. The cross-section of the transmission part is adapted to the cross-section of the front end of the transmission shaft. The transmission sleeve is fitted on the transmission part and the front end of the transmission shaft. The front end of the second threaded part protrudes from the front side of the sheath.

[0014] With the above configuration, the rear end of the screw is installed at the front end of the drive shaft via the first threaded part and the threaded hole, which facilitates the assembly and disassembly of the screw.

[0015] Furthermore, the front end cross-section of the drive shaft is polygonal.

[0016] Furthermore, the front end of the drive shaft protrudes from the front end of the handle sleeve. The integrated sheath also includes a spring installed inside the sheath. The spring applies a rearward force to the drive sleeve. After the sheath is removed from the front end of the handle sleeve, the drive sleeve can float backward within the sheath, causing the rear end to protrude outside the sheath.

[0017] The above setup makes it easy to fit the transmission sleeve onto the transmission part and the front end of the transmission shaft.

[0018] Furthermore, the spring is coaxially mounted in the sheath, the screw passes through the spring, the front end of the spring abuts against the front end of the sheath, and the rear end of the spring abuts against the front end of the transmission sleeve and can slide relative to it.

[0019] Furthermore, the screw assembly also includes a stabilizing nut, which is threaded onto the front end of the sheath. The inner diameter of the stabilizing nut is adapted to the outer diameter of the screw, and the screw passes through the stabilizing nut.

[0020] With the above settings, various sizes of screws can be replaced, making it convenient to rivet nuts of different sizes.

[0021] Furthermore, the stabilizing nut includes an external thread portion and a nut portion. The external thread portion is threadedly connected to the front end of the sheath, and the nut portion is fixedly connected to the front side of the external thread portion and exposed on the front side of the sheath.

[0022] The above settings make it easy to install and remove the stabilizing nut using a wrench. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the riveting tool used in an embodiment.

[0024] Figure 2 An exploded view of the riveting tool used in this embodiment.

[0025] Figure 3 An exploded view of a riveting tool for a different specification of screw assembly. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] like Figures 1 to 2 As shown, a rivet nut rivet tool includes a transmission handle, an integrated sleeve, and a screw assembly. The transmission handle includes a handle sleeve 3 and a transmission shaft 4. The transmission shaft 4 passes through the handle sleeve 3 and is rotatably connected to the handle sleeve 3. The rear end of the transmission shaft 4 can be connected to a power source, and the front end of the transmission shaft 4 has a non-circular cross-section. The screw assembly includes a screw 5. The rear end of the screw 5 is detachably connected to the front end of the transmission shaft 4, and its cross-section is adapted to the cross-section of the front end of the transmission shaft 4. The integrated sleeve includes a sleeve 6 and a transmission sleeve 7. The rear end of the sleeve 6 is detachably connected to the handle sleeve 3. The transmission sleeve 7 is rotatably connected in the sleeve 6. The transmission sleeve 7 can be fitted backward on the front end of the transmission shaft 4 and the rear end of the screw 5 to prevent relative rotation between the transmission shaft 4 and the screw 5. The front end of the screw 5 protrudes to the front side of the sleeve 6 for connection with the rivet nut.

[0028] With the above settings, firstly, the torque is mainly transmitted between the drive shaft 4 and the screw 5 through the drive sleeve 7, and the screw 5 is not easy to loosen; secondly, since the torque is mainly transmitted through the drive sleeve 7, the front end of the drive shaft 4 and the rear end of the screw 5 do not need to be completely locked, making it easier to remove the screw 5 without the need for special tools.

[0029] When installing the screw 5, the output end of the power source locks the rear end of the drive shaft 4 in the riveting tool of this application. The power source can be a pneumatic gun or an electric gun, etc. The cross-section of the rear end of the drive shaft 4 is polygonal to facilitate locking of the power source output end and transmission of torque. The rear end of the screw 5 is coaxially and detachably connected to the front end of the drive shaft 4. The connection method can be snap-fit, threaded connection, or clamping connection, etc. At this time, the cross-section of the rear end of the screw 5 corresponds to the cross-section of the front end of the drive shaft 4. The integrated sheath of the drive sleeve 7 is sleeved on the rear end of the screw 5 and the front end of the drive shaft 4 through the screw 5. Then, the rear end of the sheath 6 is detachably connected to the front end of the handle sleeve 3. In this application, the front end of the handle sleeve 3 is provided with an internal thread, and the rear end of the sheath 6 is provided with an external thread. The rear end of the sheath 6 is screwed onto the front end of the handle sleeve 3 by the thread. Figure 1 As shown, the inner wall cross-section of the transmission sleeve 7 is also a non-circular structure, which mates with the front end of the transmission shaft 4 and the rear end of the screw 5. The non-circular structure can be a polygonal structure, an ellipse, or other shapes. The purpose is to prevent relative rotation between the transmission shaft 4 and the screw 5. At this point, the screw 5 is installed.

[0030] In use, the existing rivet nut is screwed onto the front end of the screw 5. After the rivet nut passes through the installation position, the power source drives the screw 5 to rotate through the drive shaft 4 and the drive sleeve 7. After the rivet nut is installed, the power source drives the screw 5 to reverse through the drive shaft 4 and the drive sleeve 7, separating it from the rivet nut. When the rivet tool of this application is working, the drive shaft 4 and the screw 5 are driven by the drive sleeve 7, which replaces the traditional threaded drive. The screw 5 and the drive shaft 4 will not rotate relative to each other, thus avoiding the screw 5 from loosening.

[0031] When disassembling the screw 5 using the riveting tool of this application, first unscrew the sheath 6 from the front end of the handle sleeve 3, then slide the transmission sleeve 7 forward off the screw 5, and then separate the rear end of the screw 5 from the front end of the drive shaft 4. Since the screw 5 and the drive shaft 4 of this application mainly transmit torque through the transmission sleeve 7, the connection between the rear end of the screw 5 and the front end of the drive shaft 4 does not need to be fully locked. Therefore, no special tool is required to remove the screw 5 from the front end of the drive shaft 4, and it can be removed manually, making removal more convenient.

[0032] As one implementation, the transmission handle also includes a thrust bearing 8, which is axially locked in the handle sleeve 3. The transmission shaft 4 passes through the thrust bearing 8, and a limiting boss 9 is provided along the outer periphery of the transmission shaft 4. The limiting boss 9 abuts against the front side of the thrust bearing 8.

[0033] With the above configuration, the handle sleeve 3 supports the transmission shaft 4 via the thrust bearing 8, resulting in less resistance when the transmission shaft 4 rotates relative to the handle sleeve 3.

[0034] The thrust bearing 8 of this application is specifically axially locked in the handle sleeve 3 by a snap ring. The front side of the thrust bearing 8 supports the transmission shaft 4 through the limiting boss 9. When the user holds the handle sleeve 3 to rivet, the thrust bearing 8 applies a forward thrust to the transmission shaft 4. When the transmission shaft 4 rotates, the thrust bearing 8 reduces the resistance of the transmission shaft 4.

[0035] As one implementation, the transmission handle also includes a ball bearing 10, the outer ring of which is locked in the handle sleeve 3, and the transmission shaft 4 passes through the ball bearing 10, with the outer circumference of the transmission shaft 4 engaging with the inner ring of the ball bearing 10.

[0036] The above settings increase the radial stability of the drive shaft 4 and reduce its rotational resistance.

[0037] In one implementation, the screw 5 includes a first threaded part 51, a transmission part 52, and a second threaded part 53. The first threaded part 51 is coaxially and fixedly connected to the second threaded part 53 through the transmission part 52. The front end of the transmission shaft 4 is provided with a threaded hole, and the first threaded part 51 is threadedly connected to the threaded hole. The cross-section of the transmission part 52 is adapted to the cross-section of the front end of the transmission shaft 4. The transmission sleeve 7 is fitted on the transmission part 52 and the front end of the transmission shaft 4. The front end of the second threaded part 53 protrudes from the front side of the sheath 6.

[0038] With the above configuration, the rear end of the screw 5 is installed at the front end of the drive shaft 4 through the first threaded part 51 and the threaded hole, which facilitates the assembly and disassembly of the screw 5.

[0039] In this application, the screw 5 is threaded to the front end of the drive shaft 4 via the first threaded part 51 and the threaded hole. During installation, it is not necessary to tighten it completely. It is sufficient that the angle between the drive part 52 and the front end of the drive shaft 4 is aligned. That is, it is sufficient that the drive sleeve 7 can be fitted onto the drive part 52 and the drive shaft 4. The torque is transmitted by the drive sleeve 7. The first threaded part 51 and the threaded hole can prevent the screw 5 from moving back and forth. When removing the screw 5, simply slide the drive sleeve 7 forward and then unscrew the screw 5 from the front end of the drive shaft 4. No special tools are required, and the removal is convenient.

[0040] As one implementation method, the front cross-section of the drive shaft 4 is polygonal.

[0041] The front end of the drive shaft 4 in this application has a regular hexagonal cross section, the drive part 52 has a regular hexagonal cross section, and the inner wall of the drive sleeve 7 also has a regular hexagonal cross section. When the drive sleeve 7 is fitted onto the drive part 52 and the front end of the drive shaft 4, the inner wall of the drive sleeve 7 fits against the drive part 52 and the front end of the drive shaft 4 to prevent the screw 5 from rotating relative to the drive shaft 4.

[0042] As one implementation, the front end of the drive shaft 4 protrudes from the front end of the handle sleeve 3. The integrated sheath also includes a spring 11 installed inside the sheath 6. The spring 11 applies a rearward force to the drive sleeve 7. After the sheath 6 is removed from the front end of the handle sleeve 3, the drive sleeve 7 can float backward in the sheath 6, so that the rear end protrudes out of the sheath 6.

[0043] The above configuration makes it easy to fit the transmission sleeve 7 onto the front end of the transmission part 52 and the transmission shaft 4.

[0044] When installing the bolt 5 in the riveting tool of this application, the first threaded part 51 is first screwed into the threaded hole. At this time, the front end of the drive shaft 4 and the drive part 52 are exposed and can be observed with the naked eye. The rear end of the drive sleeve 7 is also exposed behind the sheath 6 under the action of the spring 11. Figure 2 As shown, and also visually observable, during the installation of the integrated sheath, the sheath 6 is first fitted onto the front end of the second threaded portion 53, and then slides backward along the second threaded portion 53. The rear end of the transmission sleeve 7 is aligned with the transmission portion 52 and then slid backward, fitting the transmission sleeve 7 onto the transmission portion 52 and the front end of the transmission shaft 4. Then, the rear end of the sheath 6 is screwed tightly onto the front end of the handle sleeve 3. During the tightening process, the transmission sleeve 7 slowly enters the sheath 6, as shown... Figure 1 As shown, spring 11 is slowly compressed.

[0045] In one implementation, the spring 11 is coaxially mounted in the sleeve 6, the screw 5 passes through the spring 11, the front end of the spring 11 abuts against the front end of the sleeve 6, and the rear end of the spring 11 abuts against the front end of the transmission sleeve 7 and can slide relative to it.

[0046] Before the integrated sheath of this application is installed on the transmission handle, the spring 11 is essentially in a free state, that is, the elastic force of the spring 11 is zero. Figure 2 As shown, the rear end of the transmission sleeve 7 protrudes from the rear side of the sheath 6. After the integrated sheath is installed, as... Figure 1 As shown, when the riveting tool of this application is used, the sheath 6, the handle sleeve 3 and the spring 11 basically do not rotate, while the transmission shaft 4, the transmission sleeve 7 and the screw 5 rotate synchronously. The stiffness and elasticity of the spring 11 are very small, and the rear end of the spring 11 slides relative to the front end of the transmission sleeve 7.

[0047] As one implementation, the screw assembly also includes a stabilizing nut 12, which is threaded to the front end of the sheath 6. The inner diameter of the stabilizing nut 12 is adapted to the outer diameter of the screw 5, and the screw 5 passes through the stabilizing nut 12.

[0048] With the above settings, various sizes of screws 5 can be replaced, making it convenient to rivet nuts of different sizes.

[0049] The sheath 6 of this application has an internal thread at its front end for easy threaded connection with the stabilizing nut 12. The outer diameter of the first threaded portion 51 of the screw 5 and the inner diameter of the stabilizing nut 12 are both compatible with the specifications of the rivet nut to be installed. The screw 5 and stabilizing nut 12 with the corresponding outer diameter can be installed as needed. Figure 3 As shown, during use, the screw and the stabilizing nut rotate relative to each other. The stabilizing nut can reduce the radial vibration of the screw and improve the stability of the screw rotation.

[0050] As one implementation, the stabilizing nut 12 includes an external thread portion 121 and a nut portion 122. The external thread portion 121 is threadedly connected to the front end of the sheath 6, and the nut portion 122 is fixedly connected to the front side of the external thread portion 121 and exposed on the front side of the sheath 6.

[0051] The above settings make it easy to install and remove the stabilizing nut 12 using a wrench.

[0052] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A rivet nut rivet tool, characterized in that, Includes the drive handle, integrated sheath, and screw assembly; The transmission handle includes a handle sleeve and a transmission shaft. The transmission shaft passes through the handle sleeve and is rotatably connected to the handle sleeve. The rear end of the transmission shaft can be connected to a power source. The front end of the transmission shaft has a non-circular cross-section. The screw assembly includes a screw, the rear end of which is detachably connected to the front end of the drive shaft, and the cross-section of which is adapted to the cross-section of the front end of the drive shaft; The integrated protective sleeve includes a protective sleeve and a transmission sleeve. The rear end of the protective sleeve is detachably connected to the handle sleeve. The transmission sleeve is rotatably connected in the protective sleeve. The transmission sleeve can be fitted backward onto the front end of the drive shaft and the rear end of the screw to prevent relative rotation between the drive shaft and the screw. The front end of the screw protrudes to the front side of the protective sleeve for connection with the rivet nut.

2. The rivet nut rivet tool according to claim 1, characterized in that, The transmission handle also includes a thrust bearing, which is axially locked in the handle sleeve. The transmission shaft passes through the thrust bearing, and a limiting boss is provided along the outer periphery of the transmission shaft. The limiting boss abuts against the front side of the thrust bearing.

3. A rivet nut rivet tool according to claim 1, characterized in that, The transmission handle also includes a ball bearing, the outer ring of which is locked in the handle sleeve, and the transmission shaft passes through the ball bearing, with the outer circumference of the transmission shaft engaging with the inner ring of the ball bearing.

4. A rivet nut rivet tool according to claim 1, characterized in that, The screw includes a first threaded part, a transmission part, and a second threaded part. The first threaded part is coaxially and fixedly connected to the second threaded part through the transmission part. The front end of the transmission shaft is provided with a threaded hole. The first threaded part is threadedly connected to the threaded hole. The cross-section of the transmission part is adapted to the cross-section of the front end of the transmission shaft. The transmission sleeve is fitted on the transmission part and the front end of the transmission shaft. The front end of the second threaded part protrudes from the front side of the sleeve.

5. A rivet nut rivet tool according to claim 4, characterized in that, The front end of the drive shaft has a polygonal cross-section.

6. A rivet nut rivet tool according to claim 4, characterized in that, The front end of the drive shaft protrudes from the front end of the handle sleeve. The integrated sheath also includes a spring installed inside the sheath. The spring applies a rearward force to the drive sleeve. After the sheath is removed from the front end of the handle sleeve, the drive sleeve can float backward in the sheath, causing the rear end to protrude outside the sheath.

7. A rivet nut rivet tool according to claim 6, characterized in that, The spring is coaxially mounted in the sheath, the screw passes through the spring, the front end of the spring abuts against the front end of the sheath, and the rear end of the spring abuts against the front end of the transmission sleeve and can slide relative to it.

8. A rivet nut rivet tool according to claim 7, characterized in that, The screw assembly also includes a stabilizing nut, which is threaded to the front end of the sheath. The inner diameter of the stabilizing nut is adapted to the outer diameter of the screw, and the screw passes through the stabilizing nut.

9. A rivet nut rivet tool according to claim 8, characterized in that, The stabilizing nut includes an external thread portion and a nut portion. The external thread portion is threadedly connected to the front end of the sheath, and the external thread portion is fixedly connected to the front side of the external thread portion and exposed on the front side of the sheath.

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