Plate connecting device and installation method thereof

Abstract

The present invention discloses a plate connecting device and an installation method thereof, the plate connecting device comprising: a plate, the plate having a mounting surface, which is recessed inwardly to form a first groove and a second groove, the first groove having an asymmetrical first side and second side; the second groove is located on the outer side of the first side or the second side of the first groove to form a protrusion between the first groove; a rivet pin, the rivet pin is placed in the second groove; a fastener, the fastener is placed in the first groove; the fastener has a main body and a plurality of extensions radially extending from the outer edge of the main body, the extensions having a limiting surface, and the limiting surface is opposite to the first side or the second side of the first groove; the extensions located at both axial ends of the main body and adjacent extensions form a containing groove, the containing groove is used to accommodate a deformed portion after the protrusion undergoes plastic deformation; the containing groove has at least one inclined side wall connected to its groove bottom wall, the inclined side wall gradually inclines outward from one end of the extension toward one end of the main body, for controlling the generation of burrs during plastic deformation of the protrusion.

Description

Technical Field

[0001] The present invention relates to the technical field of riveting, and in particular to a plate connecting device and an installation method thereof. Background Art

[0002] In the prior art, the connection of thin metal plates is generally achieved by welding. However, in the actual process of laser welding, it is difficult to control the energy generated by the laser, so the welding effect is not ideal: due to the heat generated by the laser, this damage is particularly obvious during the welding of ultra-thin plates. When the energy of the laser is set to a large value, the welded plate will be damaged, and obvious stress marks will appear on the back of the plate. The generation of stress marks is particularly obvious in the welding of ultra-thin plates; when the energy of the laser is relatively small, the mechanical properties of the welded part will be insufficient. Therefore, when connecting an ultra-thin plate to a fastener, riveting is often used. However, the general riveting method not only produces aluminum shearing during the riveting process, but also causes stress marks on the back of the ultra-thin plate after riveting, and a large number of burrs are generated in the riveted part. The mechanical properties between the ultra-thin plate and the fastener are also insufficient. Summary of the Invention

[0003] In order to overcome the defects in the prior art, the main purpose of the present invention is to provide a plate connecting device and an installation method thereof. The provided plate connecting device has no aluminum cutting phenomenon during installation, no stress marks on the back of the plate, no burrs on the deformed part of the plate, and good mechanical properties of the connecting part.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a plate connecting device, which includes:

[0006] A plate having a mounting surface, wherein the mounting surface is recessed inwardly to form a first groove and a second groove, wherein the first groove has an asymmetrical first side and a second side; and the second groove is located outside the first side or the second side of the first groove to form a protrusion between the second groove and the first groove;

[0007] a rivet pin, the rivet pin being placed in the second groove;

[0008] a fastener disposed in the first slot; the fastener comprising a main body and a plurality of extensions radially extending from an outer edge of the main body, the extensions comprising a limiting surface, and the limiting surface being opposite to the first side or the second side of the first slot;

[0009] A receiving groove is formed between the extension portions located at both axial ends of the main body and the adjacent extension portions, and the receiving groove is used to accommodate the deformed portion of the protrusion after plastic deformation; the receiving groove has at least one inclined side wall connected to its groove bottom wall, and the inclined side wall gradually tilts outward from one end of the extension portion to one end of the main body, so as to control the generation of burrs when the protrusion is plastically deformed.

[0010] As a further description of the above technical solution, there are 1 or 2 containing tanks;

[0011] The included angles between the inclined sidewalls of the receiving groove and the radial plane of the extending portion are both 15°-30°.

[0012] As a further description of the above technical solution, when there is one containing groove, there are two extension parts, which are respectively located at the axial ends of the main body, and the containing groove has two inclined side walls connected to the bottom of the groove.

[0013] As a further description of the above technical solution, the top of the head of the rivet pin is abutted against the second groove of the plate, and the head of the rivet pin is also provided with a flange portion. The preset distance between the flange portion facing the top of the head and the top of the head is greater than the distance between the top of the protrusion and the bottom of the second groove, so as to control the generation of burrs during plastic deformation of the protrusion.

[0014] As a further description of the above technical solution, when there are two containing grooves, there are three extension parts, and the extension parts are respectively located at the axial ends and axial middle part of the main body. At least the extension part located in the axial middle part of the main body forms the inclined side wall of the containing groove.

[0015] As a further description of the above technical solution, the fastener is provided with an inner hole, and the inner hole passes through the main body and the extension portion along the axial direction of the main body.

[0016] As a further description of the above technical solution, threads are formed on the hole wall of the inner hole.

[0017] As a further description of the above technical solution, the inner side wall and the outer side wall of the protrusion are both arc-shaped surfaces.

[0018] The present invention also provides a method for installing a plate connecting device, comprising the following steps:

[0019] placing the fastener into the first groove of the plate through the vibrating plate;

[0020] inserting the rivet pin into the second groove of the plate;

[0021] When the head of the rivet pin is brought into contact with the installation wall, the rivet pin rotates and moves along the second groove; the movement trajectory of the rivet pin is a unidirectional curve that is not circular.

[0022] As a further description of the above technical solution, during the movement of the rivet pin, a reciprocating force is applied to the rivet tool multiple times, so that the rivet pin independently squeezes the protrusion between the first groove and the second groove multiple times.

[0023] The outstanding effects of the present invention are:

[0024] In the plate connecting device of the present invention, the plurality of extensions included in the fastener are formed by radially extending from the outer edge of the main body, and a groove for accommodating the deformed portion of the protrusion after plastic deformation is formed between the extensions at both ends of the main body of the fastener and the adjacent extensions, and the groove has at least one inclined side wall connected to its groove bottom wall, and the inclined side wall gradually tilts outward from one end of the extension toward one end of the main body, so that the protrusion formed between the second groove and the first groove on the outer side of the first side or second side of the first groove on the plate mounting surface can evenly flow into the groove and combine with the extension without generating burrs when being spun by the rivet pin;

[0025] In the plate connection device of the present invention, the first groove formed by the inward depression of the plate installation surface has an asymmetric first side and second side. After the fastener is placed in the first groove, the limiting surface of the extension portion included therein will cooperate with the first side or the second side of the first groove, thereby constituting a source of torque. After the rotary riveting action, the pull-off force generated by the mutual engagement of the deformation portion and the extension portion is coordinated, so that the fastener has excellent mechanical properties after being combined with the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of a plate in an embodiment of the present invention;

[0028] Figure 2 A schematic structural diagram of a fastener in one embodiment of the present invention;

[0029] Figure 3 This is a schematic structural diagram of a plate connecting device in one embodiment of the present invention;

[0030] Figure 4 This is a schematic cross-sectional view of a plate connecting device according to an embodiment of the present invention;

[0031] Figure 5 This is a structural schematic diagram of a plate connecting device from a first perspective in another embodiment of the present invention;

[0032] Figure 6 This is a structural schematic diagram of a plate connecting device from a second perspective in another embodiment of the present invention;

[0033] Figure 7 This is a schematic cross-sectional view of a plate connecting device in another embodiment of the present invention;

[0034] Figure 8 Schematic diagram of the cross-sectional structure of a fastener in yet another embodiment of the present invention.

[0035] Reference numerals:

[0036] 1. Plate; 11. Mounting surface; 12. First groove; 13. Second groove; 14. Protrusion;

[0037] 2. Rivet pin; 21. Head; 22. Flange;

[0038] 3. Fastener; 31. Main body; 32. Extension; 321. Limiting surface; 33. Inner hole;

[0039] 4. Receiving groove; 41. Sloping side wall. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an implementation method of the present invention based on its overall structure.

[0042] See also Figures 1 to 8 The present invention discloses a plate 1 connecting device, which includes:

[0043] A plate 1 having a mounting surface 11, wherein the mounting surface 11 is recessed inwardly to form a first groove 12 and a second groove 13, wherein the first groove 12 has an asymmetrical first side and a second side; the second groove 13 is located outside the first side or the second side of the first groove 12, so as to form a protrusion 14 between the second groove 13 and the first groove 12;

[0044] A rivet pin 2, the rivet pin 2 being placed in the second groove 13;

[0045] A fastener 3 is disposed in the first slot 12 ; the fastener 3 comprises a main portion 31 and a plurality of extensions 32 radially extending from an outer edge of the main portion 31 ; the extensions 32 have limiting surfaces 321 , and the limiting surfaces 321 are opposite to the first side or the second side of the first slot 12 ;

[0046] A receiving groove 4 is formed between the extension portions 32 located at both axial ends of the main body portion 31 and the adjacent extension portions 32, and the receiving groove 4 is used to accommodate the deformed portion of the protrusion 14 after plastic deformation; the receiving groove 4 has at least one inclined side wall 41 connected to its groove bottom wall, and the inclined side wall 41 gradually tilts outward from one end of the extension portion 32 to one end of the main body portion 31, and is used to control the generation of burrs when the protrusion 14 is plastically deformed.

[0047] With the above structure, the fastener 3 is placed in the first groove 12, and the working end surface of the rivet pin 2 placed in the second groove 13 can squeeze the protrusion 14 formed between the two grooves, so that the protrusion 14 is plastically deformed toward the fastener 3, and finally the protrusion 14 is combined with the fastener 3 on the side facing the fastener 3, wherein the fastener 3 has a main body 31 and a plurality of extensions 32 formed by radially extending from the outer edge of the main body 31, and the protrusions 32 at both ends of the main body 31 are provided. A receiving groove 4 is formed between the extension portion 32 and the adjacent extension portion 32. Each receiving groove 4 can be used to accommodate the deformed portion of the protrusion 14 after plastic deformation. The receiving groove 4 has at least one inclined side wall 41 connected to its bottom wall, and the inclined side wall 41 gradually tilts outward from one end of the extension portion 32 to one end of the main body portion 31, so that when the protrusion 14 is spun by the rivet pin 2, it can flow evenly into the receiving groove 4 and combine with the extension portion 32 without generating burrs. At the same time, the first groove 12 has an asymmetric first side and a second side. When the extension portion 32 is placed in the first groove 12, the limiting surface 321 provided thereon cooperates with the first side or the second side of the first groove 12, thereby forming a source of torque. Combined with the pull-out force generated by the mutual engagement of the deformed portion and the extension portion 32, the structure after the fastener 3 is combined with the plate 1 has excellent mechanical properties.

[0048] See also Figures 1 to 3 Specifically, in one embodiment, the mounting surface 11 of the plate 1 is circular, and is recessed downward to form a first groove 12 and a second groove 13. The left side (first side) of the first groove 12 is a straight portion, and the right side (second side) is an arc portion. The cross-section along its radial direction is D-shaped, and the left and right sides are asymmetrical. When the fastener 3 is placed in the first groove 12, the outer periphery of the extension portion 32 of the fastener 3 is also D-shaped, and its limiting surface 321 cooperates with the straight portion of the first groove 12 to form a source of torque. Of course, in other embodiments, the mounting surface 11 of the plate 1 can also be other shapes, and the cross-section of the first groove 12 and the outer periphery of the extension portion 32 of the fastener 3 can also be other compatible non-circular features, such as a waist shape, to cooperate in obtaining torque.

[0049] Specifically, in this embodiment, the second groove 13 is located on the outside of the right arc portion of the first groove 12 and is also arc-shaped, so that the inner and outer side walls of the protrusion 14 formed between the second groove 13 and the first groove 12 are both arc-shaped surfaces. Therefore, under various processing conditions, the rivet pin 2 can stably spin the protrusion 14, so that the plate 1 and the fastener 3 are stably combined after the riveting is completed.

[0050] See also Figures 1 to 4Specifically, in this embodiment, the fastener 3 is formed with a main body 31 and two extensions 32 extending radially from the outer edge of the main body 31, and the two extensions 32 are symmetrically located at the upper and lower ends of the main body 31, so that the fastener 3 has a symmetrical structure as a whole, which is conducive to automatic grasping and loading it into the first groove 12. The two extending portions 32 form a receiving groove 4 for accommodating the deformed portion of the protrusion 14 after plastic deformation. The receiving groove 4 is an isosceles trapezoidal shape along the axial section of the main body 31. The bottom wall of the receiving groove 4 is the outer wall of the main body 31. The two inclined side walls 41 of the receiving groove 4 are the opposite walls of the two extending portions 32. Each of the inclined side walls 41 forms an angle of 20° with the radial plane of the corresponding extending portion 32, so that the inclined side wall 41 at the upper end gradually tilts downward and the inclined side wall 41 at the lower end gradually tilts upward. No matter which end of the extension 32 is placed on the bottom surface of the first groove 12, it can ensure that the fastener 3 and the deformed portion formed after plastic deformation of the protrusion 14 are well combined. The inclined setting of the inclined side wall 41 ensures that the protrusion 14 can be evenly stressed during the spinning process, which is beneficial to the control of burrs on the deformed portion. Of course, in other embodiments, the angle between the inclined side wall 41 of the receiving groove 4 and the radial plane of the extension portion 32 may also be other angles of 15°-30°, so that the protrusion 14 is evenly stressed and flows onto the inclined side wall 41.

[0051] Specifically, in this embodiment, the rivet pin 2 used has a head 21 and a flange portion 22 sleeved on the head 21. During rivet operation, the top of the head 21 abuts against the bottom of the second groove 13 of the plate 1, and pressure is applied to the protrusion 14 in the radial direction on the outside. When the protrusion 14 is subjected to the radial pressure from the outside, it will plastically deform toward the fastener 3 and flow to the oblique side wall 41 on the lower side of the receiving groove 4. The flange portion 22 of the rivet pin 2 has a preset distance between the top of the head 21 and the top of the head 21, which is greater than the distance between the top of the protrusion 14 and the bottom of the second groove 13. It will be limited to the height of the plastic deformation of the protrusion 14 in the vertical direction, so that the deformed portion of the protrusion 14 after plastic deformation flows as much as possible to the oblique side wall 41, that is, as much as possible flows to the extension portion 32 to control the generation of burrs during the process of combining with the fastener 3. Therefore, during the deformation of the protrusion 14, it is simultaneously subjected to the combined action of the head 21, the flange 22 of the rivet pin 2 and the inclined side wall 41 of the receiving groove 4, so that the edge of the protrusion 14 is evenly squeezed, thereby avoiding the generation of burrs during the combination of the plate 1 and the fastener 3.

[0052] Specifically, in this embodiment, the fastener 3 is further provided with an inner hole 33, which penetrates the main body 31 and the extension portion 32 along the axial direction of the main body 31, and a thread is formed on the hole wall of the inner hole 33, so that after the plate 1 is combined with the fastener 3, it can be connected to other components by screwing.

[0053] See also Figures 5 to 7 Specifically, in another embodiment, unlike the above-described embodiment, there are three extensions 32, located at the upper and lower ends and the middle of the main body 31. Thus, two symmetrical receiving grooves 4 are formed from top to bottom between the extensions 32. The inclined sidewalls 41 of the two receiving grooves 4 are both formed by the extensions 32 located in the middle of the main body 31. The axial cross-section of the two receiving grooves 4 along the main body 31 is a right-angled trapezoid. This allows the fastener 3 to maintain an axially symmetrical structure, facilitating automated gripping and loading. Furthermore, because the inclined sidewalls 41 are located obliquely above the protrusions 14 when the protrusions 14 plastically deform toward the fastener 3, they limit the deformed portion formed by the protrusions 14, thereby preventing burrs from forming on the deformed portion. Therefore, in this embodiment, the protrusions 14 can be spun using only the rivet pin 2 without the flange 22, thereby joining the sheet 1 to the fastener 3.

[0054] See also Figure 8 Specifically, in another embodiment, different from the above-mentioned embodiment, two symmetrical receiving grooves 4 are formed between the extensions 32 from top to bottom, and the oblique side walls 41 of the two receiving grooves 4 are jointly formed by the two adjacent extensions 32, that is, each of the receiving grooves 4 has two upper and lower oblique side walls 41 connected to its groove bottom wall, and the oblique side walls 41 formed by the extensions 32 located at the ends of the main body 31 have an inclination angle, so that the inner and outer side walls of the protrusion 14 are evenly stressed during spinning, while the oblique side walls 41 formed by the extensions 32 located in the middle can limit the deformation flow of the protrusion 14 in the vertical direction, so that the deformed part of the protrusion 14 after deformation flows as much as possible to the extensions 32 and combines with the fastener 3 without generating burrs.

[0055] Specifically, the present invention also discloses a method for installing a plate 1 connecting device, comprising the following steps:

[0056] Before connecting and installing the plate 1, first, the fastener 3 is placed into the first groove 12 of the plate 1 using a vibrating plate. Since the fastener 3 is axially symmetrical, the axial orientation of the fastener 3 does not need to be considered. Then, the rivet pin 2 is inserted into the second groove 13 of the plate 1. In one embodiment, the rivet pin 2 can also be inserted into the second groove 13 while the fastener 3 is being installed.

[0057] Specifically, in this embodiment, after the rivet pin 2 is inserted into the second groove 13 and the head 21 of the rivet pin 2 abuts the mounting wall, the rivet pin 2 rotates under the action of an external force and simultaneously moves along the second groove 13. The movement trajectory of the rivet pin 2 is a non-annular, unidirectional curve. That is, while the rivet pin 2 rotates, it also orbits around the fastener 3. By controlling the rotation and orbital speeds, friction is generated between the rivet pin 2 and the outer wall of the protrusion 14. This is a purely spinning process, so no aluminum shaving occurs.

[0058] Specifically, in this embodiment, during the movement of the rivet pin 2, the rivet tool is subjected to a plurality of reciprocating force so that the rivet pin 2 performs a plurality of independent reciprocating extrusions on the protrusion 14 between the first groove 12 and the second groove 13. During this extrusion process, the energy inputted in a single time is extremely low by adjusting the external force. It is understandable that the combined rotation and revolution of the rivet pin 2 can prevent aluminum shavings from occurring during the riveting process. In other words, the riveting process is achieved through multiple spinning operations. At the same time, since the extrusion action occurs only in the horizontal direction, the influence of the strain force in the vertical direction can be reduced to a minimum, thereby ensuring that no stress marks are generated on the side of the plate 1 facing away from its mounting surface 11.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A plate connecting device, characterized in that: include: A plate having a mounting surface, wherein the mounting surface is recessed inwardly to form a first groove and a second groove, wherein the first groove has an asymmetrical first side and a second side; The second groove is located outside the first side or the second side of the first groove to form a protrusion between the second groove and the first groove; a rivet pin, the rivet pin being placed in the second groove; a fastener, the fastener being disposed in the first slot; The fastener comprises a main body and a plurality of extensions radially extending from an outer edge of the main body, wherein the extensions have limiting surfaces, and the limiting surfaces are opposite to the first side or the second side of the first groove; A receiving groove is formed between the extension portion and the adjacent extension portion at both axial ends of the main body portion, and the receiving groove is used to accommodate the deformed portion of the protrusion after plastic deformation; The receiving groove has at least one inclined side wall connected to its groove bottom wall, and the inclined side wall gradually tilts outward from one end of the extension part to one end of the main body part, so as to control the generation of burrs when the protrusion is plastically deformed.

2. The plate connecting device according to claim 1, characterized in that: There are 1 or 2 containing tanks; The included angles between the inclined sidewalls of the receiving groove and the radial plane of the extending portion are both 15°-30°.

3. The plate connecting device according to claim 2, characterized in that: When there is one containing groove, there are two extending portions, which are respectively located at two axial ends of the main body, and the containing groove has two inclined side walls connected to the bottom of the groove.

4. The plate connecting device according to claim 3, characterized in that: The top of the head of the rivet pin abuts against the second groove of the plate, and the head of the rivet pin is also sleeved with a flange portion. The preset distance between the side of the flange portion facing the top of the head and the top of the head is greater than the distance between the top of the protrusion and the bottom of the second groove, so as to control the generation of burrs when the protrusion is plastically deformed.

5. The plate connecting device according to claim 2, characterized in that: When there are two receiving grooves, there are three extension parts, which are respectively located at the axial ends and the axial middle of the main body. At least the extension part located in the axial middle of the main body forms the inclined side wall of the receiving groove.

6. The plate connecting device according to claim 1, characterized in that: The fastener is provided with an inner hole, and the inner hole passes through the main body and the extension portion along the axial direction of the main body.

7. The plate connecting device according to claim 6, characterized in that: A thread is formed on the hole wall of the inner hole.

8. The plate connecting device according to claim 1, characterized in that: The inner side wall and the outer side wall of the protrusion are both arc-shaped surfaces.

9. A method for installing a plate connecting device, for installing the plate connecting device according to any one of claims 1 to 8, characterized in that: The following steps are involved: placing the fastener into the first groove of the plate through the vibrating plate; inserting the rivet pin into the second groove of the plate; When the head of the rivet pin is brought into contact with the installation wall, the rivet pin rotates and moves along the second groove; the movement trajectory of the rivet pin is a unidirectional curve that is not circular.

10. The method for installing the plate connecting device according to claim 9, characterized in that: During the movement of the rivet pin, a reciprocating force is applied to the rivet tool multiple times, so that the rivet pin independently squeezes the protrusion between the first groove and the second groove multiple times.

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