CN116393974A - Board connecting device and mounting method thereof - Google Patents

Abstract

The invention discloses a board connecting device and an installation method thereof, wherein the board connecting device comprises: the plate is provided with a mounting surface, a first groove and a second groove are formed by inwards recessing, and the first groove is provided with a first side and a second side which are asymmetric; the second groove is positioned outside the first side or the second side of the first groove and forms a bulge with the first groove; the spin riveting pin is arranged in the second groove; a fastener disposed in the first slot; the fastener is provided with a main body part and a plurality of extending parts formed by extending the outer edge of the main body part along the radial direction, the extending parts are provided with limiting surfaces, and the limiting surfaces are opposite to the first side or the second side of the first groove; the extending parts positioned at the two axial ends of the main body part and the adjacent extending parts form accommodating grooves, and the accommodating grooves are used for accommodating the deformation parts after the protrusions are plastically deformed; the accommodating groove is provided with at least one inclined side wall connected with the bottom wall of the groove, and the inclined side wall gradually inclines outwards from one end of the extending part to one end of the main body part and is used for controlling burrs to be generated when the protrusions plastically deform.

Description

Board connecting device and mounting method thereof

Technical Field

The invention relates to the technical field of riveting, in particular to a plate connecting device and an installation method thereof.

Background

In the prior art, the connection to the sheet metal is generally achieved by welding. However, the energy generated by the laser is difficult to control in the process of actually adopting laser welding, so that the welding effect is not ideal: often due to the heat generated by the laser, this damage is particularly evident during the welding of the ultra-thin plates. When the energy setting of the laser is large, the welded plate is damaged, obvious stress marks are generated on the back of the plate, and the generation of the stress marks is particularly obvious in the ultra-thin plate welding; when the energy of the laser is smaller, the mechanical properties of the welded part are insufficient. Therefore, when an ultrathin plate is connected with a fastener, a riveting mode is adopted, but the common riveting mode not only generates an aluminum cutting phenomenon in the riveting process, but also can cause stress marks to appear behind the ultrathin plate after riveting, a large number of burrs are generated on the riveting part, and the mechanical property between the ultrathin plate and the fastener is insufficient.

Disclosure of Invention

In order to overcome the defects in the prior art, the main purpose of the invention is to provide a plate connecting device and an installation method thereof, wherein the plate connecting device has no aluminum cutting phenomenon in installation, no stress mark on the back of a plate, no burr on the deformation part of the plate and good mechanical property of the connecting part.

The aim of the invention is achieved by the following technical scheme:

the present invention provides a panel connecting device, comprising:

a sheet having a mounting surface, the mounting surface being recessed inwardly to form a first slot and a second slot, the first slot having first and second asymmetric sides; the second groove is positioned outside the first side or the second side of the first groove, and a bulge is formed between the second groove and the first groove;

a spin rivet pin disposed in the second slot;

a fastener disposed in the first slot; the fastener is provided with a main body part and a plurality of extending parts which are formed by extending the outer edge of the main body part along the radial direction, the extending parts are provided with limiting surfaces, and the limiting surfaces are opposite to the first side or the second side of the first groove;

the extending parts positioned at the two axial ends of the main body part and the adjacent extending parts form accommodating grooves, and the accommodating grooves are used for accommodating the deformation parts after the protrusions are plastically deformed; the accommodating groove is provided with at least one inclined side wall connected with the bottom wall of the groove, and the inclined side wall gradually inclines outwards from one end of the extending part to one end of the main body part and is used for controlling burrs to be generated when the protrusions are plastically deformed.

As a further description of the above technical solution, there are 1 or 2 containers;

the inclined side walls of the accommodating grooves and the radial plane of the extending part form an included angle of 15-30 degrees.

As a further description of the above technical solution, when the number of the accommodating grooves is 1, the number of the extending portions is 2, the extending portions are respectively located at two axial ends of the main body portion, and the accommodating groove has two inclined side walls connected with the bottom of the groove.

As a further description of the above technical solution, the top end of the head of the spin riveting pin abuts against the second groove of the plate, the head of the spin riveting pin is further sleeved with a flange portion, and a preset distance between one surface of the flange portion, which faces the top end of the head, and the top end of the head is greater than a distance between the top end of the protrusion and the bottom of the second groove, so as to control burrs generated during plastic deformation of the protrusion.

As a further description of the above technical solution, when the number of the accommodating grooves is 2, the number of the extending portions is 3, the extending portions are respectively located at two axial ends and an axial middle portion of the main body portion, and the extending portions located at least at the axial middle portion of the main body portion form inclined side walls of the accommodating groove.

As a further description of the above technical solution, the fastener is provided with an inner hole penetrating through the main body portion and the extension portion in the axial direction of the main body portion.

As a further description of the above technical solution, the hole wall of the inner hole is formed with threads.

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.

The invention also provides an installation method of the plate connecting device, which comprises the following steps:

placing the fastener into the first slot of the sheet material through the vibration plate;

inserting a spin rivet pin into a second slot of the plate;

when the head of the spin riveting pin is abutted against the mounting wall, the spin riveting pin rotates, and the spin riveting pin moves along the second groove; the moving track of the spin riveting pin is a unidirectional curve which is not annular.

As a further description of the above technical solution, during the movement of the spin riveting pin, the spin riveting tool applies a force of multiple reciprocating motions, so that the spin riveting pin independently extrudes the protrusion between the first groove and the second groove multiple times.

The invention has the outstanding effects that:

in the plate connecting device, the plurality of extending parts included in the fastening piece are all formed by extending the outer edge of the main body part along the radial direction, the extending parts positioned at the two ends of the main body part included in the fastening piece and the adjacent extending parts are all formed with the accommodating groove for accommodating the deformation part after plastic deformation of the bulge, the accommodating groove is provided with at least one inclined side wall connected with the groove bottom wall of the accommodating groove, and the inclined side wall gradually inclines outwards from one end of the extending part to one end of the main body part, so that the bulge formed between the second groove positioned at the outer side of the first side or the second side of the first groove on the plate mounting surface and the first groove can uniformly flow into the accommodating groove to be combined with the extending part without generating burrs when the bulge is subjected to spinning of a spin riveting pin;

in the plate connecting device, the first groove formed by inwards sinking the plate mounting surface is provided with the first side and the second side which are asymmetric, and the limiting surface of the extending part of the fastener is matched with the first side or the second side of the first groove relatively after the fastener is placed in the first groove, so that a torque source is formed, and the pulling-out force generated by the mutual engagement of the deformation part and the extending part is matched after the spin riveting action, so that the fastener and the plate are combined and have excellent mechanical properties.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a plate structure according to an embodiment of the present invention;

FIG. 2 is a schematic view of a fastener according to an embodiment of the present invention;

FIG. 3 is a schematic view of a board connecting device according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a board connecting device according to an embodiment of the invention;

FIG. 5 is a schematic view of a first view of a sheet metal connecting device according to another embodiment of the present invention;

FIG. 6 is a schematic view of a structure of a board connecting device according to a second embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a sheet connecting apparatus according to another embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a fastener according to yet another embodiment of the present invention.

Reference numerals:

1. a sheet material; 11. a mounting surface; 12. a first groove; 13. a second groove; 14. a protrusion;

2. spin riveting pin; 21. a head; 22. a flange portion;

3. a fastener; 31. a main body portion; 32. an extension; 321. a limiting surface; 33. an inner bore;

4. a container; 41. and an inclined side wall.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present invention will be described in terms of its overall structure.

Referring to fig. 1 to 8, the present invention discloses a board 1 connecting device, the board 1 connecting device comprises:

a sheet 1, the sheet 1 having a mounting face 11, the mounting face 11 being recessed inwardly to form a first slot 12 and a second slot 13, the first slot 12 having asymmetric first and second sides; the second groove 13 is located outside the first side or the second side of the first groove 12 to form a protrusion 14 with the first groove 12;

a spin rivet pin 2, wherein the spin rivet pin 2 is arranged in the second groove 13;

a fastener 3, said fastener 3 being placed in said first slot 12; the fastener 3 has a main body 31 and a plurality of extending portions 32 extending from the outer edge of the main body 31 in the radial direction, the extending portions 32 have a limiting surface 321, and the limiting surface 321 is opposite to the first side or the second side of the first groove 12;

the extending portions 32 at two axial ends of the main body 31 and adjacent extending portions 32 form a containing groove 4, and the containing groove 4 is used for containing a deformed portion of the protrusion 14 after plastic deformation; the container 4 has at least one inclined side wall 41 connected to a bottom wall thereof, and the inclined side wall 41 is gradually inclined outwardly from one end of the extension 32 to one end of the main body 31 for controlling burr generation at the time of plastic deformation of the protrusion 14.

With the above structure, the fastener 3 is disposed in the first groove 12, the working end surface of the spin bolt 2 disposed in the second groove 13 may be pressed against 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 toward one side of the fastener 3, wherein the fastener 3 has a main body 31 and a plurality of extending portions 32 extending radially from the outer edge of the main body 31, the extending portions 32 disposed at both ends of the main body 31 and adjacent extending portions 32 form the receiving grooves 4, each receiving groove 4 may be used to receive a deformed portion of the protrusion 14 after plastic deformation, and the receiving groove 4 has at least one inclined sidewall 41 connected to the groove bottom wall thereof, and the inclined sidewall 41 is gradually inclined outwardly from one end of the extending portion 32 toward one end of the main body 31, so that the protrusion 14 may uniformly flow into the receiving groove 4 when being spun by the spin bolt 2, and the extending portions 32 may not be combined with the extending portions 32. Meanwhile, 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 disposed on the extension portion is matched with the first side or the second side of the first groove 12, so as to form a source of torque, and the pull-off force generated by the mutual engagement of the deformation portion and the extension portion 32 is matched, so that the structure of the combined fastener 3 and the plate 1 has excellent mechanical properties.

Referring to fig. 1 to 3, specifically, in one embodiment, the mounting surface 11 of the board 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, the right side (second side) is an arc portion, the radial cross section of the first groove is D-shaped, the left side and the right side are asymmetric, when the fastener 3 is placed in the first groove 12, the periphery of the extension portion 32 of the fastener 3 is also D-shaped, and the limiting surface 321 of the extension portion 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 board 1 may have other shapes, and the cross section of the first groove 12 and the periphery of the extension 32 of the fastener 3 may be adapted to other non-circular features, such as a waist, to obtain torque in cooperation.

Specifically, in this embodiment, the second groove 13 is located at the outer side 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 and the first groove 12 are arc-shaped, so that the riveting pin 2 can stably spin the protrusion 14 under various processing conditions of the plate 1, and the plate 1 and the fastener 3 are stably combined after the riveting is finished.

Referring to fig. 1 to 4, in this embodiment, the fastener 3 is formed with a main body 31 and two extending portions 32 extending radially from the outer edge of the main body 31, and the two extending portions 32 are symmetrically located at the upper and lower ends of the main body 31, so that the fastener 3 is integrally in a symmetrical structure, which is beneficial to automatically grabbing and controlling the feeding of the fastener into the first slot 12. The two extending portions 32 form 1 containing groove 4 for containing the deformation portion after plastic deformation of the protrusion 14, the axial cross section of the containing groove 4 along the main body portion 31 is isosceles trapezoid, the bottom wall of the containing groove 4 is the outer wall of the main body portion 31, two inclined side walls 41 of the containing groove 4 are 2 opposite wall surfaces of the extending portions 32, each inclined side wall 41 and a radial plane of the corresponding extending portion 32 form an included angle of 20 degrees, so that the inclined side wall 41 at the upper end is gradually inclined downwards, the inclined side wall 41 at the lower end is gradually inclined upwards, and when the extending portion 32 at which end is arranged on the bottom surface of the first groove 12, good combination of the deformation portion formed after plastic deformation of the fastener 3 and the protrusion 14 can be ensured, and the inclined arrangement of the inclined side walls 41 ensures that the protrusion 14 can be uniformly stressed in the spinning process, thereby facilitating control of burrs of the deformation portion. Of course, in other embodiments, the inclined side wall 41 of the container 4 may have an angle with the radial plane of the extension 32 of 15 ° -30 °, so that the protrusion 14 is uniformly forced to flow onto the inclined side wall 41.

Specifically, in the present embodiment, the rivet pin 2 is used to have the head 21 and the flange 22 sleeved on the head 21, and during the rivet, the top end of the head 21 abuts against the bottom of the second groove 13 of the plate 1, so that the protrusion 14 is radially pressed on the outside, and when the protrusion 14 is radially pressed on the outside, it plastically deforms toward the fastener 3 to flow onto the sloped sidewall 41 on the lower side of the receiving groove 4, and the flange 22 of the rivet pin 2 has a predetermined distance between the side of the flange 22 facing the top end of the head 21 and the top end of the head 21, which is greater than the distance between the top end of the protrusion 14 and the bottom of the second groove 13, and is 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 flows onto the sloped sidewall 41 as much as possible, that is, so that the deformed portion of the protrusion 14 flows onto the sloped sidewall 41 as much as possible to control the burr of the fastener 3 combined with the extending portion 32. Therefore, during the deformation of the protrusion 14, it is simultaneously subjected to the co-action of the head 21, the flange 22 and the inclined side wall 41 of the receiving groove 4 of the rivet pin 2, so that the edge of the protrusion 14 is uniformly pressed, thereby avoiding the generation of burrs during the bonding of the plate 1 and the fastener 3.

Specifically, in this embodiment, the fastener 3 is further provided with an inner hole 33, the inner hole 33 penetrates through the main body 31 and the extension 32 along the axial direction of the main body 31, and threads are formed on the wall of the inner hole 33, so that after the plate 1 is combined with the fastener 3, the plate can be connected with other components in a threaded connection manner.

Referring to fig. 5 to 7, in a further embodiment, unlike the above embodiment, the number of the extending portions 32 is 3, and the extending portions are respectively located at the upper end, the lower end and the middle of the main body 31, so that two symmetrical slots 4 are formed between the extending portions 32 from top to bottom, the inclined side walls 41 of the two slots 4 are formed by the extending portions 32 located in the middle of the main body 31, and the two slots 4 are right trapezoid along the axial cross-section of the main body 31, so that the whole fastener 3 still maintains an axially symmetrical structure, and is still beneficial for automatic gripping and feeding. And, when the protrusion 14 is plastically deformed toward the fastener 3, the inclined side walls 41 are located above the protrusion 14 and limit the deformed portion formed by deforming the protrusion 14, so as to control the burr of the deformed portion, so that in this embodiment, the protrusion 14 can be spun by using only the spin rivet pin 2 without the flange 22, and the plate 1 and the fastener 3 are combined.

Referring to fig. 8, in particular, in a further embodiment, unlike the above embodiment, two symmetrical grooves 4 are formed between the extending portions 32 from top to bottom, and the inclined side walls 41 of the two grooves 4 are formed by two adjacent extending portions 32 together, that is, each groove 4 has two inclined side walls 41 connected to the bottom wall of the groove, and the inclined side walls 41 formed by the extending portions 32 at the end of the main body 31 have an inclination angle, so that the inner and outer side walls of the protrusions 14 are uniformly stressed during spinning, and the inclined side walls 41 formed by the extending portions 32 in the middle can limit the deformation flow of the protrusions 14 in the vertical direction, so that the deformed parts of the protrusions 14 can flow onto the extending portions 32 as much as possible to be combined with the fastening members 3 without burrs.

Specifically, the invention also discloses a method for installing the plate 1 connecting device, which comprises the following steps:

before the plates 1 are connected and installed, firstly, the fastening piece 3 is placed into the first groove 12 of the plates 1 through the vibration disc, and the fastening piece 3 is of an axially symmetrical structure, so that the axial direction front and back of the fastening piece 3 are not needed to be considered; the staking pin 2 is then inserted into the second slot 13 of the plate 1. In one case, the rivet pin 2 can also be inserted into the second slot 13 at the same time as the fastening element 3 is installed.

Specifically, in this embodiment, after the rivet pin 2 is inserted into the second groove 13, when the head 21 of the rivet pin 2 is abutted against the mounting wall, the rivet pin 2 rotates under the action of external force, and at the same time, the rivet pin 2 moves along the second groove 13; the moving track of the spin rivet pin 2 is a unidirectional curve which is not annular. That is, the rivet pin 2 revolves around the fastener 3 while rotating, and friction is generated between the rivet pin 2 and the outer sidewall of the boss 14 by controlling rotation and revolution speeds, which is only a spinning process, so that no aluminum skiving is generated.

Specifically, in this embodiment, during the movement of the riveting pin 2, the riveting tool is applied with a force of multiple reciprocating motions, so that the riveting pin 2 performs multiple independent reciprocating extrusion on the protrusion 14 between the first groove 12 and the second groove 13. During this extrusion, the energy of a single input is made extremely low by the adjustment of the external force. It is understood that the combined rotation and revolution of the spin rivet pin 2 can prevent aluminum cutting during riveting. I.e. the riveting process is carried out by multiple spinning. At the same time, since the pressing action is only generated in the horizontal direction, the influence of 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 material 1 facing away from the mounting surface 11 thereof.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any changes, equivalents, modifications and improvements may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. A panel connection device, comprising:

a sheet having a mounting surface, the mounting surface being recessed inwardly to form a first slot and a second slot, the first slot having first and second asymmetric sides; the second groove is positioned outside the first side or the second side of the first groove, and a bulge is formed between the second groove and the first groove;

a spin rivet pin disposed in the second slot;

a fastener disposed in the first slot; the fastener is provided with a main body part and a plurality of extending parts which are formed by extending the outer edge of the main body part along the radial direction, the extending parts are provided with limiting surfaces, and the limiting surfaces are opposite to the first side or the second side of the first groove;

the extending parts positioned at the two axial ends of the main body part and the adjacent extending parts form accommodating grooves, and the accommodating grooves are used for accommodating the deformation parts after the protrusions are plastically deformed; the accommodating groove is provided with at least one inclined side wall connected with the bottom wall of the groove, and the inclined side wall gradually inclines outwards from one end of the extending part to one end of the main body part and is used for controlling burrs to be generated when the protrusions are plastically deformed.

2. The sheet material connecting device according to claim 1, wherein the number of the accommodating grooves is 1 or 2;

the inclined side walls of the accommodating grooves and the radial plane of the extending part form an included angle of 15-30 degrees.

3. The sheet material connecting device according to claim 2, wherein when the number of the accommodating grooves is 1, the number of the extending parts is 2, the extending parts are respectively positioned at two axial ends of the main body part, and the accommodating groove is provided with two inclined side walls connected with the bottom of the groove.

4. A sheet material connecting device according to claim 3, wherein the top end of the head of the riveting pin is abutted against the second groove of the sheet material, the head of the riveting pin is further sleeved with a flange part, and a preset distance between one surface of the flange part facing the top end of the head and the top end of the head is larger than a distance between the top end of the protrusion and the bottom of the second groove, so as to control burrs generated during plastic deformation of the protrusion.

5. The sheet material connecting device according to claim 2, wherein when the number of the accommodating grooves is 2, the number of the extending portions is 3, the extending portions are respectively located at both axial ends and at an axial middle portion of the main body portion, and the extending portions located at least at the axial middle portion of the main body portion form inclined side walls of the accommodating grooves.

6. The sheet material connecting device of claim 1, wherein the fastener is provided with an inner bore that penetrates the main body portion and the extension portion in an axial direction of the main body portion.

7. The sheet material connecting device of claim 6, wherein the bore wall of the bore is formed with threads.

8. The sheet material connecting device of claim 1, wherein the inner and outer side walls of the protrusion are arcuate.

9. A method of installing a panel connection apparatus, comprising the steps of:

placing the fastener into the first slot of the sheet material through the vibration plate;

inserting a spin rivet pin into a second slot of the plate;

when the head of the spin riveting pin is abutted against the mounting wall, the spin riveting pin rotates, and the spin riveting pin moves along the second groove; the moving track of the spin riveting pin is a unidirectional curve which is not annular.

10. The method of installing a panel connecting device according to claim 9, wherein the rivet pin independently presses the protrusions between the first and second grooves a plurality of times by applying a force of a plurality of reciprocating motions to the rivet tool during the movement of the rivet pin.

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