CN217107715U

CN217107715U - Improved structure of plate-to-plate fixing device

Info

Publication number: CN217107715U
Application number: CN202220257629.4U
Authority: CN
Inventors: 刘志勇; 谢清耀
Original assignee: Xiecheng Internat Industry Co
Current assignee: Xiecheng Internat Industry Co
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-08-02
Anticipated expiration: 2032-02-08

Abstract

The utility model relates to a board is to board fixing device's improvement structure, include: the sleeve comprises a pipe body with a through hole inside, the top side of the pipe body is provided with a first deformation part, the bottom side of the pipe body is provided with a stop part, and the stop part is internally provided with an abutting space communicated with the through hole; a pull rod, comprising a head, wherein a rigid buffer groove is concavely arranged on the top side of the head, the bottom side of the head is provided with a first abutting surface, the bottom side of the first abutting surface is provided with a second deformation part which can be extruded at the top side of a preset rivet gun sleeve in the abutting space, the outer edge of the bottom side of the second deformation part is further provided with a material adding lug extending downwards, the center of the bottom of the second deformation part is provided with a breaking part with a smaller diameter, and the breaking part extends downwards to form a rod body which penetrates into the through hole and the abutting space through the first deformation part of the sleeve.

Description

Improved structure of plate-to-plate fixing device

Technical Field

The utility model relates to a board is to improvement structure of board fixing device, especially indicate one kind and borrow by a predetermine rivet rifle when drawing the pull rod, a first support on the pull rod is the department of keeping can striking sheathed tube body upper limb department to make a first deformation portion on this body produce deformation, and this pull rod is difficult to produce the rotating in this first deformation portion and can not offset the strength of drop-down, and simultaneously, a second deformation portion on this pull rod can produce deformation in this body, and the concave rigidity buffer tank of establishing in head top side of pull rod can subtract the rigidity of this head, can not produce the cracked condition at the in-process of pull in order to ensure the head of this pull rod.

Background

The present methods for fixing the panels by combining include screw fastening, cementing, welding, riveting or blind rivet fixing, etc., wherein the blind rivet is deformed by pulling the blind rivet with a blind rivet gun to fix the two panels by riveting, and the blind rivet gun pulls out the rod body in the blind rivet after the blind rivet is fixed to complete the combining and fixing of the two panels.

However, the pull-nail structure used conventionally is provided with a pull rod and a sleeve, the pull rod has a T-shaped head, a rod extends from one side of the head, the sleeve has a hollow tube, and a ring-shaped stop portion extends from one side of the tube, in order to assemble the pull-nail, the rod of the pull rod can be inserted into the tube, and the head of the pull rod can be supported on the upper edge of the tube, so that the assembly can be completed, the pull-nail is used by assembling the assembled pull-nail into a pull-nail gun, and riveting and fixing two pre-assembled plates by the pull-nail gun, the head of the pull rod can be inserted into the two pre-assembled plates before the two plates are inserted, the head can be extruded into the tube by the pulling force of the pull-nail gun, so as to facilitate the extrusion and deformation of the tube to rivet and fix the two pre-assembled plates, the pull rod is pulled out of the sleeve to complete the riveting and fixing of the two preset plates.

However, the head of the rivet is T-shaped and parallel to the upper edge of the tube of the sleeve, so that the head rotates during pulling and pulling to counteract partial pulling force, and the T-shaped head is too thin, so that the head is easily broken and separated from the rod body in advance during pulling and pulling, and the rivet gun is pulled and pulled by 1500 newtons of force, and the head of the pull rod is not easily deformed and twisted due to too strong rigidity during pulling and pulling, so that the head is broken under 1500 newtons of force, which causes the rivet joint of the two predetermined plates to loosen, thereby affecting the quality of rivet fixing.

Therefore, how to try to solve the above-mentioned existing drawbacks and inconveniences is the key point for those engaged in the present industry to seek improvement.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems and disadvantages, the present invention provides a new patent with an improved structure of a board-to-board fixing device, which is developed by collecting relevant data, evaluating and considering in many ways, and trying and modifying continuously with years of experience accumulated in the industry.

In order to achieve the above object, the utility model adopts the following technical scheme:

an improved structure of a plate-to-plate fixing device is characterized by comprising:

the sleeve comprises a pipe body with a through hole inside, the top side of the pipe body is provided with a first deformation part, the bottom side of the pipe body is provided with a stop part which extends outwards in a gradually expanding way, and an abutting space connected with the through hole is formed in the stop part;

the pull rod comprises a head part, a rigid buffer groove is concavely arranged on the top side of the head part, a first abutting surface which gradually shrinks and obliquely extends towards the bottom is arranged on the bottom side of the head part, a second deformation part which protrudes outwards and can be extruded and deformed with the top side of a preset rivet gun sleeve in the abutting space is arranged on the bottom side of the first abutting surface, a material increasing lug extending downwards is arranged at the outer edge of the bottom side of the second deformation part, a breaking part with the diameter decreasing is arranged at the center of the bottom of the second deformation part, and a rod body which extends outwards and obliquely and penetrates into the through hole and the abutting space through the first deformation part of the sleeve pipe is arranged on the breaking part.

The improved structure of the plate-to-plate fixing device is characterized in that: the diameter and length range of the outer wall of the tube body of the sleeve is 2.9-3.2 mm, and the diameter and length range of the inner wall of the tube body of the sleeve is 2.2-2.4 mm; the height range from the top side of the tube body to the bottom side of the blocking part is 2-3 mm; the height range from the juncture of the tube body and the stop part to the bottom side of the stop part is 0.7-0.9 mm; the vertical height range of the outer wall of the bottom side of the stop part is 0.2-0.4 mm, and the vertical height range of the inner wall of the stop part is 0.2-0.5 mm; the diameter and length range of the outer wall bottom side of the stop part is 4.9-5.1 mm, and the diameter and length range of the inner wall bottom side thereof is 3.05-3.25 mm.

The improved structure of the plate-to-plate fixing device is characterized in that: the diameter and length range of the top surface of the head of the pull rod is 2.9-3.2 mm, the diameter and length range of the top side of the rigid buffer groove in the head is 2.4-2.6 mm, the diameter from the top side to the bottom side of the rigid buffer groove is 0.3-0.5 mm, the height range from the top side of the head to the bottom side of the second deformation part is 1-2 mm, and the diameter and length range of the bottom surface of the second deformation part is 2.2-2.4 mm.

The improved structure of the plate-to-plate fixing device is characterized in that: the rigid buffer groove is a conical space which is gradually reduced from the top side to the bottom side, and the angle of the rigid buffer groove which is obliquely cut towards the top side is 60-120 degrees.

The improved structure of the plate-to-plate fixing device is characterized in that: the rigid buffer groove is a cylindrical space which is gradually reduced from the top side to the bottom side, and the angle of the rigid buffer groove which is obliquely cut towards the top side is 60-90 degrees.

The improved structure of the plate-to-plate fixing device is characterized in that: the abutment space has a chamfer angle ranging from 30 degrees to 120 degrees from the topside to the bottom side.

The board to board fixing device's improvement structure, wherein: the head and the first abutting surface are in a round disc structure with a wide top and a narrow bottom in the whole appearance, and the second deformation part is in an inverted bowl structure with a narrow top and a wide bottom in the whole appearance.

The board to board fixing device's improvement structure, wherein: the abutting space of the sleeve is a cylindrical space with a beveled top side, the beveled top side angle range of the abutting space is 60 degrees to 120 degrees, and the angle range of the first abutting surface extending upwards in a slanting mode is 60 degrees to 120 degrees.

The board to board fixing device's improvement structure, wherein: the top side of the preset rivet gun sleeve is annularly provided with a second abutting surface which penetrates through the blocking part of the sleeve, so that the abutting space inside the blocking part presents a cylindrical space in a shape of a bare cap, and the cylindrical space in the shape of the bare cap is a space filled by the second deformation part of the pull rod in a deformation mode.

The improved structure of the plate-to-plate fixing device is characterized in that: when the blind rivet is combined with a preset first plate and a preset second plate, the preset first plate and the preset second plate are respectively provided with a symmetrical first positioning groove and a symmetrical second positioning groove in a concave manner at the opposite outer sides, the first positioning groove and the second positioning groove are respectively in an inclined inward concave structure, the stopping part is abutted against and supported on the second positioning groove, the first abutting surface of the pull rod is simultaneously pulled and abutted so that the inner wall of the first deformation part is expanded and deformed under stress, the outer wall of the pull rod is abutted against and supported on the first positioning groove, and the first deformation part and the stopping part form a flat state in the first positioning groove and the second positioning groove at two sides of the preset first plate and the second plate and form a fixed structure.

The utility model discloses borrow by this pull rod of borrowing by a default rivet gun drawing, in order to make this first last reason department of holding the face striking this body, can make this first deformation portion on this body produce deformation, and this pull rod is difficult to produce the rotating in this first deformation portion and can not offset the strength of pulling down, simultaneously, this second deformation portion on this pull rod can produce deformation in this body, and this rigidity buffer slot that this head top side concave was established can subtract the rigidity of this head, in order to ensure that the head of this pull rod can not produce the cracked condition at the in-process of pull.

Drawings

Fig. 1 is a perspective view of the blind rivet of the present invention.

Fig. 2 is an exploded perspective view of the blind rivet of the present invention.

Fig. 3 is another exploded perspective view of the blind rivet of the present invention.

Fig. 4 is a side sectional view of the first operation of the blind rivet for fixing two plates according to the present invention.

Fig. 5 is a side sectional view of the second operation of the blind rivet for fixing two plates according to the present invention.

Fig. 6 is a sectional view of the third operation of the blind rivet for fixing two plates according to the present invention.

Fig. 7 is a side sectional view of the fourth operation of the blind rivet for fixing two plates according to the present invention.

Fig. 8 is a side sectional view of the fifth operation of the blind rivet for fixing two plates according to the present invention.

Fig. 9 is a side sectional view of the cannula of the present invention.

Fig. 10 is a side view of the pull rod of the present invention.

Fig. 11 is another embodiment of the rigid buffer slot of the pull rod head of the present invention.

Fig. 12 is a view of another embodiment of a bushing for a drawbar according to the present invention.

Description of reference numerals: 1-a sleeve; 11-a tube body; 110-perforation; 12-a first deformation; 13-a stop; 130-an abutment space; 2-a pull rod; 21-a head; 210-rigid buffer tank; 22-a first holding surface; 23-a second deformation; 231-material increase bumps; 24-a breakaway portion; 25-a rod body; 3, presetting a sleeve of the rivet gun; 31-a second holding surface; 4-presetting a first plate; 40-a first positioning groove; 5-presetting a second plate; 50-a second positioning groove; h1-height from top side of tube to bottom side of stop part; h2-the height from the juncture of the tube and the stopper to the bottom side of the stopper; h3 — vertical height of outer wall at bottom side of stop; h4-vertical height of the inner wall at the bottom side of the stop; h5-height from top to bottom of rigid buffer tank; h6 — height of head top side to second deformation bottom side; h7-height from top to bottom of rigid buffer tank; l1 — outer wall diameter length of tube; l2 — inner wall diameter length of tube; l3 — length of diameter of outer wall bottom side of stop; l4 — bottom side inner wall diameter length of stop; l5-head top surface diameter length; l6 — diameter length of top side of rigid buffer tank; l7 — second deformation floor diameter length; l8 — diameter length of top side of rigid buffer tank; θ 1 — angle of apical chamfer of the abutment space; theta 2-the angle at which the first abutment surface extends obliquely upward toward the head; θ 3-angle of the rigid buffer slot in the head to the top side bevel; theta 4-angle of the rigid buffer groove chamfered to the top side.

Detailed Description

Please refer to fig. 1 to 3, which are a perspective view, a perspective exploded view and another perspective exploded view of the blind rivet with an improved structure of the plate-to-plate fixing device of the present invention, as can be clearly seen from the drawings, the blind rivet of the present invention can be made of a metal material such as aluminum, copper, iron or stainless steel, the blind rivet of the present invention mainly includes a sleeve 1 and a pull rod 2, and the connection relationship between the aforementioned components is as follows:

the casing 1 comprises a tube 11 having a through hole 110 therein, wherein the top side of the tube 11 has a first deformation portion 12, the bottom side of the tube 11 has a stop portion 13 extending outward, and an abutting space 130 connected to the through hole 110 is formed in the stop portion 13;

the pull rod 2 comprises a head 21, a rigid buffer groove 210 is concavely arranged on the top side of the head 21, a first abutting surface 22 tapering and extending obliquely to the bottom is arranged on the bottom side of the head 21, a second deforming part 23 protruding outwards and capable of being extruded and deformed with the top side of a preset rivet gun sleeve 3 in the abutting space 130 is arranged on the bottom side of the first abutting surface 22, a material adding convex block 231 extending downwards is further arranged on the outer edge of the bottom side of the second deforming part 23, a breaking part 24 with a smaller diameter is arranged at the center of the bottom of the second deforming part 23, and the breaking part 24 extends outwards and extends obliquely to the bottom and penetrates into the through hole 110 and a rod body 25 of the abutting space 130 through the first deforming part 12 of the sleeve 1.

Referring to fig. 9 and 10, which are a side view of the sleeve and a side view of the pull rod of the present invention, it can be seen clearly that, the abutting space 130 of the casing 1 is a cylindrical space with a top side chamfered, and the angle theta 1 of the top side chamfered of the abutting space 130 is in the range of 60 degrees to 120 degrees, and the angle theta 2 of the first abutting surface 22 extending obliquely upward toward the head 21 is in the range of 60 degrees to 120 degrees, and the angle theta 3 of the topside chamfer of the rigid buffer groove 210 in the head portion 21 is 60 to 120 degrees, the overall appearance of the head 21 and the first abutting surface 22 is a round disc structure with a wide top and a narrow bottom, and the rigid buffer groove 210 in the head 21 is a conical space tapered from the top side to the bottom side, the second deformation portion 23 has an inverted bowl-shaped structure with a narrow top and a wide bottom, and the head portion 21 and the first abutting surface 22 have a disc-shaped structure with a wide top and a narrow bottom.

And in order to operate in a thin plate material in which the total thickness of a predetermined first plate material 4 and a predetermined second plate material 5 is limited to 1.6 to 2.4mm, so that a rivet (fastener) can exert the maximum fastening and locking force (tensile and shear resistance), there are dimensional limitations described later, for which the outer wall diameter length L1 of the tube body 11 of the sleeve 1 is in the range of 2.9 to 3.2mm, and the inner wall diameter length L2 of the tube body 11 of the sleeve 1 is in the range of 2.2 to 2.4 mm; the height H1 from the top side of the tube 11 to the bottom side of the stopper 13 is 2-3 mm; the height H2 from the boundary between the tube 11 and the stopper 13 to the bottom side of the stopper 13 is 0.7-0.9 mm; the outer wall vertical height H3 range of the bottom side of the stopper 13 is 0.2-0.4 mm and the inner wall vertical height H4 range is 0.2-0.5 mm; the diameter length L3 of the outer wall bottom side of the stop part 13 ranges from 4.9 to 5.1mm and the diameter length L4 of the inner wall bottom side thereof ranges from 3.05 to 3.25 mm.

The diameter length L5 of the top surface of the head 21 of the pull rod 2 is 2.9-3.2 mm, the diameter length L6 of the top side of the rigid buffer groove 210 in the head 21 is 2.4-2.6 mm, the height H5 from the top side to the bottom side of the rigid buffer groove 210 is 0.3-0.5 mm, the height H6 from the top side of the head to the bottom side of the second deformation part is 1-2 mm, and the diameter length L7 of the bottom surface of the second deformation part is 2.2-2.4 mm.

In practical application, the improved structure of the plate-to-plate fixing device of the present invention combines the sleeve 1 with a first positioning groove 40 and a second positioning groove 50, which are symmetrically and penetratively formed on the preset first plate 4 and the preset second plate 5, and the first positioning groove 40 and the second positioning groove 50 are inwardly inclined recessed structures, and the stop portion 13 of the sleeve 1 is supported on the inner wall surface of the second positioning groove 50, and the tube 11 of the sleeve 1 is penetrated through the first positioning groove 40 and the second positioning groove 50, and the rod 25 of the pull rod 2 is penetrated through the through hole 110 of the tube 11 and protruded to the outside of the abutting space 130, please refer to fig. 4 to 8, which shows the first, second, third, fourth, and fifth operation side sectional views of the pull rod 2, and the bottom side 25 of the pull rod 2 is a preset pull nail gun (not shown) in the drawing The sleeve 3 of the nail gun is clamped and fixed (as shown in fig. 4), and the nail gun is operated to generate a downward pulling force on the pull rod 2, so that the first abutting surface 22 abuts against the top side of the first deformation portion 12, and the nail gun is continuously pulled downward, so that the first abutting surface 22 generates a downward pressing stress, the first deformation portion 12 expands and deforms after receiving the downward pressing stress of the first abutting surface 22 (as shown in fig. 5), and during the pulling and pulling of the pull rod 2, the second deformation portion 23 abuts against a second abutting surface 31 which is annular on the sleeve 3 of the nail gun, and the second deformation portion 23 deforms by pressing against the second abutting surface 31, so that the second deformation portion 23 deforms and fills in an abutting space 130 (as shown in fig. 6) which is in a shape (or referred to as a bald cover shape), and the metal material block filled in the stopping part 13 can be increased by the material increasing projection 231 at the bottom side of the second deforming part 23 in the process of impact deformation, so that the volume of the metal material block remained in the tube 11 and the stopping part 13 is closer, and the preset rivet gun is continuously operated to continuously pull the pull rod 2 downwards, the second deforming part 23 and the breaking part 24 are separated by fracture, and the preset rivet gun uses 1500 newton force to pull the pull rod 2, in order to avoid the head 21 having too strong rigidity, so that the head 21 is broken in advance before the separation, the top side of the head 21 is concavely provided with the rigid buffer groove 210 for dispersing the rigidity, so that the rod body 25 of the pull rod 2 can be pulled away from the sleeve 1 (as shown in fig. 7), so as to complete the riveting structure of the preset first plate 4 and the preset second plate 5, the riveting operation of the present invention is completed by separating the preset sleeve 3 of the rivet gun from the abutting space 130 (as shown in fig. 8).

Referring to fig. 11, another embodiment of the rigid buffer slot of the tie bar head of the present invention is shown, wherein the rigid buffer groove 210 concavely arranged on the head 21 of the pull rod 2 is a cylindrical space gradually reduced from the top side to the bottom side, and the angle theta 4 of the rigid buffer groove 210 obliquely inclined to the top side is 60 to 90 degrees, and the height H7 from the top side to the bottom side of the rigidity buffer groove 210 ranges from 0.3mm to 0.5mm, and the diameter length L8 of the top side of the rigid buffer slot 210 is 2.4-2.6 mm, the cylindrical space in the rigid buffer tank 210 is not limited to this shape, and the head 21 may be recessed to disperse its rigidity so as to prevent the head 21 from being pulled out by the fastener driving tool, the shape or structure of a groove of a conical hole, a trapezoidal hole or an arc hole, which leads the head 21 to break in advance, is within the protection scope of the utility model.

Please refer to fig. 12, which is a diagram of another embodiment of the sleeve of the pull rod of the present invention, wherein the abutting space 130 of the sleeve 1 is a cylindrical space with a top side obliquely inclined, and the oblique cutting angle θ 1 of the top side of the abutting space 130 obliquely extending to the bottom side is 30 degrees to 120 degrees, and the oblique cutting angle θ 40 degrees is an optimal angle, and in order to limit the total thickness of a preset first plate 4 and a preset second plate 5 to a thin plate with 1.6 to 2.4mm, the operation is performed so that the pull nail (fastener) can exert the maximum fastening and locking force (which means the tensile force and the shear force), and therefore the size limitation is set, which will be described later, the outer wall diameter length L1 of the tube body 11 of the sleeve 1 is 2.9 to 3.2mm, and the inner wall diameter length L2 is 2.2 to 2.4 mm; the height H1 from the top side of the tube 11 to the bottom side of the stopper 13 is 2-3 mm; the height H2 from the boundary between the tube 11 and the stopper 13 to the bottom side of the stopper 13 is 0.7-0.9 mm; the vertical height H3 of the outer wall of the bottom side of the stop part 13 is 0.2-0.4 mm; the diameter length L3 of the outer wall bottom side of the stop part 13 is 4.9-5.1 mm.

With reference to the above descriptions of fig. 1 to 12, it can be understood that the present invention relates to an improved structure of a board-to-board fixing device, which includes: the sleeve comprises a pipe body with a through hole inside, the top side of the pipe body is provided with a first deformation part, the bottom side of the pipe body is provided with a stop part which extends outwards and gradually, and an abutting space connected with the through hole is formed in the stop part; a pull rod, which comprises a head part, wherein a rigid buffer groove is concavely arranged on the top side of the head part, the bottom side of the head part is provided with a first abutting surface which gradually shrinks and obliquely extends towards the bottom, the bottom side of the first abutting surface is provided with a second deformation part which protrudes outwards and can be extruded and deformed with the top side of a preset rivet gun sleeve in the abutting space, the outer edge of the bottom side of the second deformation part is provided with a material adding lug extending downwards, the center of the bottom of the second deformation part is provided with a breaking part with smaller diameter, and the breaking part extends downwards to be provided with a rod body which extends outwards obliquely and penetrates into the through hole and the abutting space through the first deformation part of the sleeve. The pull rod is pulled and pulled by a preset rivet gun so that the first abutting surface impacts the upper edge of the pipe body, the first deformation part on the pipe body is deformed, the pull rod is not easy to rotate in the first deformation part and cannot offset the pulling force, meanwhile, the second deformation part on the pull rod is deformed in the pipe body, and the rigid buffer groove concavely arranged on the top side of the head part can reduce the rigidity of the head part so as to ensure that the head part of the pull rod cannot be broken in the pulling process. The utility model discloses be applied to in two panel riveted fields, have splendid practicality.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An improved structure of a plate-to-plate fixing device is characterized by comprising:

the sleeve comprises a pipe body with a through hole inside, the top side of the pipe body is provided with a first deformation part, the bottom side of the pipe body is provided with a stop part which extends outwards and gradually, and an abutting space connected with the through hole is formed in the stop part;

2. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the diameter and length range of the outer wall of the tube body of the sleeve is 2.9-3.2 mm, and the diameter and length range of the inner wall of the tube body of the sleeve is 2.2-2.4 mm; the height range from the top side of the tube body to the bottom side of the blocking part is 2-3 mm; the height range from the juncture of the tube body and the stop part to the bottom side of the stop part is 0.7-0.9 mm; the vertical height range of the outer wall of the bottom side of the stop part is 0.2-0.4 mm, and the vertical height range of the inner wall of the stop part is 0.2-0.5 mm; the diameter and length range of the outer wall bottom side of the stop part is 4.9-5.1 mm, and the diameter and length range of the inner wall bottom side thereof is 3.05-3.25 mm.

3. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the diameter and length range of the top surface of the head of the pull rod is 2.9-3.2 mm, the diameter and length range of the top side of the rigid buffer groove in the head is 2.4-2.6 mm, the diameter from the top side to the bottom side of the rigid buffer groove is 0.3-0.5 mm, the height range from the top side of the head to the bottom side of the second deformation part is 1-2 mm, and the diameter and length range of the bottom surface of the second deformation part is 2.2-2.4 mm.

4. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the rigid buffer groove is a conical space which is gradually reduced from the top side to the bottom side, and the angle of the rigid buffer groove which is obliquely cut towards the top side is 60-120 degrees.

5. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the rigid buffer groove is a cylindrical space which is gradually reduced from the top side to the bottom side, and the angle of the rigid buffer groove which is obliquely cut towards the top side is 60-90 degrees.

6. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the abutment space has a chamfer angle ranging from 30 degrees to 120 degrees from the topside to the bottom side.

7. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the head and the first abutting surface are in a round disc structure with a wide top and a narrow bottom in the whole appearance, and the second deformation part is in an inverted bowl structure with a narrow top and a wide bottom in the whole appearance.

8. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the abutting space of the sleeve is a cylindrical space with a beveled top side, the beveled top side angle range of the abutting space is 60 degrees to 120 degrees, and the angle range of the first abutting surface extending upwards in a slanting mode is 60 degrees to 120 degrees.

9. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: the top side of the preset rivet gun sleeve is annularly provided with a second abutting surface which penetrates through the blocking part of the sleeve, so that the abutting space inside the blocking part presents a cylindrical space in a shape of a bare cap, and the cylindrical space in the shape of the bare cap is a space filled by the second deformation part of the pull rod in a deformation mode.

10. The improved structure of a board-to-board fixture as claimed in claim 1, wherein: when the blind rivet is combined with a preset first plate and a preset second plate, the preset first plate and the preset second plate are respectively provided with a symmetrical first positioning groove and a symmetrical second positioning groove in a concave manner at the opposite outer sides, the first positioning groove and the second positioning groove are respectively in an inclined inward concave structure, the stopping part is abutted against and supported on the second positioning groove, the first abutting surface of the pull rod is simultaneously pulled and abutted so that the inner wall of the first deformation part is expanded and deformed under stress, the outer wall of the pull rod is abutted against and supported on the first positioning groove, and the first deformation part and the stopping part form a flat state in the first positioning groove and the second positioning groove at two sides of the preset first plate and the second plate and form a fixed structure.