Hand riveter

Abstract

The utility model relates to a hand riveter which comprises a rack frame, a fluted disc, a clamping assembly and a driving assembly, the rack frame is provided with a plurality of first teeth arranged at intervals in the axial direction, the fluted disc is provided with a plurality of second teeth distributed at intervals in the circumferential direction, and the first teeth are meshed with the second teeth. The clamping assembly is connected to the rack frame and used for clamping rivets, the driving assembly is connected to the fluted disc and used for driving the fluted disc to rotate, and the clamping assembly can reciprocate in the axial direction along with the rack frame along with rotation of the fluted disc. The hand riveter is simple in structure, low in manufacturing precision requirement and convenient to produce in batches.

Description

Technical Field

[0001] The present application relates to the technical field of riveting devices, and in particular to a rivet gun. Background Art

[0002] The rivet gun is used for fastening and riveting of various metal plates, pipes and other manufacturing industries. It is currently widely used in the riveting of electromechanical and light industrial products such as elevators, switches, instruments, furniture, and decorations. It was developed to solve the shortcomings of easy melting of welding nuts on metal sheets and thin tubes, and easy slipping of tapped internal threads. It can rivet rivet products that do not require tapped internal threads or welding nuts.

[0003] Among them, electric rivet guns are widely used. Common electric rivet guns usually require the use of worm gears, screw sleeves, screws, cam mechanisms, crank connecting rods and other structures to pull the rivets to reciprocate. The structure is relatively complex and has high requirements on the manufacturing precision of each component, making mass production difficult. Utility Model Content

[0004] Based on this, it is necessary to provide a rivet gun with a simple structure, low manufacturing precision requirements and easy mass production.

[0005] A rivet gun includes a rack frame, a toothed disc, a clamping assembly and a driving assembly. The rack frame is provided with a plurality of first teeth spaced in an axial direction, the toothed disc is provided with a plurality of second teeth spaced in a circumferential direction, and the first teeth and the second teeth are meshed with each other. The clamping assembly is connected to the rack frame and used to clamp the rivet. The driving assembly is connected to the toothed disc and used to drive the toothed disc to rotate. As the toothed disc rotates, the clamping assembly can follow the rack frame to move back and forth in the axial direction.

[0006] In one embodiment, the clamping assembly is spaced apart from the toothed disc and installed on one side of the rotation plane of the toothed disc. It is understandable that such a configuration can fully utilize the space on one side of the rotation plane of the toothed disc, and the structure is more compact. In addition, the clamping assembly is spaced apart from the toothed disc, which can avoid interference between the clamping assembly and the toothed disc during axial movement.

[0007] In one embodiment, one end of the rack is connected to the side wall of the clamping assembly, and the other end extends toward the outer edge of the toothed disc, and the first tooth is provided on the surface of the rack facing the second tooth. It can be understood that such a configuration facilitates the shape of the rack to adapt to the relative position of the clamping assembly and the toothed disc.

[0008] In one embodiment, the rack frame includes a connecting section and a matching section arranged at an angle, the matching section is arranged parallel to the rotation axis of the toothed disc and is used to form a first tooth, and the connecting section connects the matching section and the clamping assembly. It can be understood that such an arrangement facilitates the formation of the first tooth on the matching section, and the connecting section facilitates the transition connection of the matching section to the clamping assembly.

[0009] In one embodiment, the rivet gun further includes a housing, a first elastic reset member, a clamping assembly movably mounted on the housing, and the two ends of the clamping assembly along the axial direction are a mating end and a clamping end respectively. The clamping end is used to clamp the rivet, one end of the first elastic reset member is connected to the housing, and the other end elastically acts on the mating end. It can be understood that, with such a configuration, when the clamping assembly moves axially to the right to pull the rivet, the first elastic reset member is squeezed, so that the first elastic reset member can apply an elastic force to the clamping assembly to push the clamping assembly to move axially to the left to reset, so as to facilitate the clamping assembly to pull the rivet next time.

[0010] In one embodiment, the clamping assembly includes a transmission shaft, a clamping jaw and a second elastic reset member, one end of the second elastic reset member is connected to the transmission shaft, and the other end elastically acts on the clamping jaw and is used to push the clamping jaw to clamp the rivet.

[0011] In one embodiment, the rack frame and the transmission shaft are an integrated structure. It is understandable that such an arrangement is conducive to improving the structural strength of the rack frame and the transmission shaft.

[0012] In one embodiment, the driving assembly includes a motor and a gearbox, and the output shaft of the motor is connected to the rotating shaft of the gear plate through the gearbox.

[0013] In one embodiment, one of the side walls where the first tooth and the second tooth abut against each other is configured as a flat surface, and the other is configured as an arc surface convex toward the former. It can be understood that such a configuration facilitates mutual force between the first tooth and the second tooth.

[0014] In one embodiment, the number of the second teeth is six, and the six second teeth are evenly spaced along the circumference of the toothed disc. It is understandable that, with such an arrangement, the rack rack can move a certain distance along the axial direction for every degree of rotation of the toothed disc.

[0015] Compared with the prior art, the rivet gun provided by the present application has a process of axial reciprocating movement of the clamping assembly as follows: when the toothed disc rotates clockwise or counterclockwise, the multiple second teeth on the toothed disc are sequentially inserted between the multiple first teeth, thereby converting the rotation of the toothed disc into the axial movement of the rack frame, and the rack frame drives the clamping assembly to move axially to pull the rivet; when the toothed disc rotates in the opposite direction, the toothed disc meshes with the first tooth and the second tooth, the rack frame moves in the opposite direction, and drives the clamping assembly to move in the opposite direction and reset, thereby facilitating the next pulling of the rivet. In this way, the transmission method between the toothed disc, the clamping assembly and the rack frame is simple, so the manufacturing precision requirements for the toothed disc, the clamping assembly and the rack frame are relatively low, thereby facilitating mass production. In addition, during the rotation of the toothed disc, the multiple first gears on the rack frame are subjected to force, which is also conducive to reducing wear and improving the service life of the rivet gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 An axonometric view of the rivet gun provided for this application;

[0018] Figure 2 A front view of a rivet gun provided for this application;

[0019] Figure 3 for Figure 2 Sectional view at AA;

[0020] Figure 4 A top view of the rivet gun provided for this application;

[0021] Figure 5 for Figure 4 Cross-sectional view at BB;

[0022] Figure 6 for Figure 4 Cross-sectional view at CC.

[0023] Attached to the drawing are the following numerals: 100, rivet gun; 10, rack; 11, first tooth; 12, connecting section; 13, mating section; 20, toothed disc; 21, second tooth; 30, clamping assembly; 31, transmission shaft; 32, clamping claw; 321, petal body; 33, second elastic return member; 34, nose clip; 35, pushing block; 36, sleeve; 37, mating end; 38, clamping end; 40, driving assembly; 41, motor; 42, gearbox; 50, housing; 60, first elastic return member. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0029] See also Figures 1 to 5 The present application provides a rivet gun 100, which includes a rack frame 10, a toothed disc 20, a clamping assembly 30 and a driving assembly 40. The rack frame 10 is provided with a plurality of first teeth 11 spaced apart in the axial direction, and the toothed disc 20 is provided with a plurality of second teeth 21 spaced apart in the circumferential direction, and the first teeth 11 and the second teeth 21 are meshed with each other. The clamping assembly 30 is connected to the rack frame 10 and is used to clamp rivets (not shown in the figure). The driving assembly 40 is connected to the toothed disc 20 and is used to drive the toothed disc 20 to rotate. As the toothed disc 20 rotates, the clamping assembly 30 can follow the rack frame 10 to reciprocate in the axial direction.

[0030] Specifically, the process of the clamping assembly 30 moving back and forth along the axial direction is as follows: when the toothed disc 20 rotates clockwise or counterclockwise, the multiple second teeth 21 on the toothed disc 20 are sequentially inserted between the multiple first teeth 11, thereby converting the rotation of the toothed disc 20 into the axial movement of the rack frame 10, and the rack frame 10 drives the clamping assembly 30 to move axially and pull the rivet; when the toothed disc 20 rotates in the opposite direction, the toothed disc 20 meshes with the first teeth 11 and the second teeth 21, and the rack frame 10 moves in the opposite direction, and drives the clamping assembly 30 to move in the opposite direction and reset, so as to facilitate the next pulling of the rivet. In this way, the transmission method between the toothed disc 20, the clamping assembly 30 and the rack frame 10 is simple, so the manufacturing precision requirements for the toothed disc 20, the clamping assembly 30 and the rack frame 10 are relatively low, so as to facilitate mass production. In addition, during the rotation of the toothed disc 20, the multiple first teeth 11 on the rack frame 10 are subjected to force in turn, which is also conducive to reducing wear and improving the service life of the rivet gun 100.

[0031] Optionally, in one embodiment, if Figure 3 As shown, the number of the second teeth 21 is six, and the six second teeth 21 are evenly spaced along the circumference of the toothed disc 20. The number of the first teeth 11 is three, and the three first teeth 11 are evenly spaced along the axial direction of the rack frame 10. In this embodiment, the rack frame 10 can move a certain distance along the axial direction every time the toothed disc 20 rotates 60 degrees.

[0032] Of course, in other embodiments, the number of the first teeth 11 and the second teeth 21 can be set according to actual needs.

[0033] One of the side walls where the first tooth 11 and the second tooth 21 abut against each other is configured as a flat surface, and the other is configured as an arc surface convex toward the former, so that the first tooth 11 and the second tooth 21 are conveniently pressed against each other.

[0034] Optionally, in one embodiment, if Figure 3 As shown, the first tooth 11 is configured as a trapezoidal tooth. The side surface of the second tooth 21 is configured as an arc surface and is convex toward the side wall of the first tooth 11.

[0035] The working process of the rivet gun 100 is described below by taking the example that the toothed disc 20 rotates clockwise so that the rack frame 10 drives the clamping assembly 30 to pull the rivet axially to the right.

[0036] See also Figure 6 The clamping assembly 30 is spaced apart from the toothed disc 20 and is installed on one side of the rotation plane of the toothed disc 20. In this way, the space on one side of the rotation plane of the toothed disc 20 can be fully utilized, the structure is more compact, and the clamping assembly 30 is spaced apart from the toothed disc 20, which can avoid interference between the clamping assembly 30 and the toothed disc 20 during axial movement.

[0037] Optionally, in one embodiment, the clamping assembly 30 is installed directly above the rotation plane of the toothed disc 20 and extends along the radial direction of the toothed disc 20 .

[0038] Furthermore, one end of the rack frame 10 is connected to the side wall of the clamping assembly 30, and the other end extends toward the outer edge of the toothed disc 20, and the first tooth 11 is provided on the surface of the rack frame 10 facing the second tooth 21. In this way, the shape of the rack frame 10 is conveniently adapted to the relative positions of the clamping assembly 30 and the toothed disc 20.

[0039] Optionally, in one embodiment, the rack frame 10 includes a connecting section 12 and a matching section 13 arranged at an angle, the matching section 13 is arranged parallel to the rotation axis of the toothed disc 20, and is used to form the first tooth 11, and the connecting section 12 connects the matching section 13 and the clamping assembly 30. In this way, it is convenient to form the first tooth 11 on the matching section 13, and the connecting section 12 facilitates the transition connection of the matching section 13 to the clamping assembly 30.

[0040] See also Figure 5 The rivet gun 100 further includes a housing 50 and a first elastic reset member 60. The clamping assembly 30 is movably mounted on the housing 50, and the two ends of the clamping assembly 30 along the axial direction are respectively a mating end 37 and a clamping end 38; the clamping end 38 is used to clamp the rivet, and one end of the first elastic reset member 60 is connected to the housing 50, and the other end elastically acts on the mating end 37. Specifically, when the clamping assembly 30 moves rightward along the axial direction to pull the rivet, the first elastic reset member 60 is squeezed, so that the first elastic reset member 60 can apply an elastic force to the mating end 37 to push the clamping assembly 30 to move leftward along the axial direction to reset, so as to facilitate the clamping assembly 30 to pull the rivet next time.

[0041] See also Figure 5 , the principle of the clamping assembly 30 clamping and pulling the rivet is introduced below.

[0042] The clamping assembly 30 includes a transmission shaft 31, a clamping jaw 32, a nose clip 34, a push block 35, a sleeve 36 and a second elastic reset member 33. The clamping jaw 32 includes two petal bodies 321, the sleeve 36 is connected to the transmission shaft 31, the clamping jaw 32 is movably installed in the sleeve 36, the push block 35 and the second elastic reset member 33 are respectively installed in the transmission shaft 31, the second elastic reset member 33 abuts against one end of the clamping jaw 32 through the push block 35, and the nose clip 34 is fixedly connected to the housing 50 and extends into the sleeve 36, abutting against one end of the clamping jaw 32 away from the push block 35. When the rack frame 10 drives the transmission shaft 31 to move axially to the right (away from the nose clip 34), the transmission shaft 31 drives the sleeve 36 to move synchronously, and the second elastic reset member 33 pushes the two petal bodies 321 to close and tighten through the push block 35, thereby clamping the rivet and pulling the rivet to the right.

[0043] Optionally, in one embodiment, the rack rack 10 and the transmission shaft 31 are an integrated structure. The integrated structure means that the rack rack 10 and the transmission shaft 31 are processed by an integrated molding method. For example, the molding method can be an integrated injection molding. In this way, it is beneficial to improve the structural strength of the rack rack 10 and the transmission shaft 31.

[0044] like Figure 5 As shown, the driving assembly 40 includes a motor 41, and the motor 41 is used to drive the gear plate 20 to rotate.

[0045] The driving assembly 40 further includes a gearbox 42 , and the output shaft of the motor 41 is connected to the rotating shaft of the gear plate 20 via the gearbox 42 .

[0046] The gear plate 20 , the gearbox 42 and the motor 41 are coaxially arranged, and the gearbox 42 and the motor 41 are installed on the other side of the wing gear plate 20 away from the clamping assembly 30 .

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A rivet gun, characterized in that: The rivet gun comprises a rack frame, a toothed disc, a clamping assembly and a driving assembly, wherein the rack frame is provided with a plurality of first teeth spaced in an axial direction, the toothed disc is provided with a plurality of second teeth spaced in a circumferential direction, and the first teeth mesh with the second teeth; The clamping assembly is connected to the rack frame and is used to clamp the rivet. The driving assembly is connected to the toothed disc and is used to drive the toothed disc to rotate. As the toothed disc rotates, the clamping assembly can follow the rack frame to move back and forth axially.

2. The rivet gun according to claim 1, characterized in that: The clamping assembly is spaced apart from the toothed disc and is located on one side close to the rotation plane of the toothed disc.

3. The rivet gun according to claim 2, characterized in that: One end of the rack frame is connected to the side wall of the clamping assembly, and the other end extends toward the outer edge of the toothed disc. The first tooth is arranged on the surface of the rack frame facing the second tooth.

4. The rivet gun according to claim 3, characterized in that: The rack frame includes a connecting section and a matching section which are arranged at an angle. The matching section is arranged parallel to the rotating axis of the toothed disc and is used to form the first tooth. The connecting section connects the matching section and the clamping assembly.

5. The rivet gun according to claim 1, characterized in that: It also includes a housing and a first elastic reset member, the clamping assembly is movably mounted on the housing, and the two ends of the clamping assembly along the axial direction are a mating end and a clamping end respectively; The clamping end is used to clamp the rivet, one end of the first elastic reset member is connected to the shell, and the other end elastically acts on the matching end.

6. The rivet gun according to claim 1, characterized in that: The clamping assembly includes a transmission shaft, a clamping claw and a second elastic reset member. One end of the second elastic reset member is connected to the transmission shaft, and the other end elastically acts on the clamping claw and is used to push the clamping claw to clamp the rivet.

7. The rivet gun according to claim 6, characterized in that: The rack frame and the transmission shaft are an integrated structure.

8. The rivet gun according to claim 1, characterized in that: The driving assembly includes a motor and a gearbox, and the output shaft of the motor is connected to the rotating shaft of the gear plate through the gearbox.

9. The rivet gun according to claim 1, characterized in that: Of the side walls where the first tooth and the second tooth abut against each other, one is configured as a flat surface, and the other is configured as an arc surface convex toward the former.

10. The rivet gun according to claim 1, characterized in that: The number of the second teeth is six, and the six second teeth are evenly spaced and distributed along the circumference of the toothed disk.

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