CN221120598U - Tightening-free press riveting tightening connecting piece - Google Patents

Abstract

The utility model relates to a tightening-free press riveting fastening connecting piece, which belongs to the technical field of fasteners, and comprises a screw and a nut; one end of the screw is provided with a press riveting section, and the center of the press riveting section is provided with a counter bore; an external thread matched with the internal thread of the nut is arranged on the outer side of the other end of the screw rod, and the screw rod is in threaded connection with the nut through the external thread; the press riveting fastening connecting piece presses down the press riveting section of the screw rod through a press riveting tool, so that the fastened connection between the fastened piece and the target body is realized. The utility model can fasten and connect the fastened piece and the target body under the action of the press, and can accurately control the clamping force through the press, thereby omitting the step of tightening, facilitating the whole installation process, improving the efficiency and reducing the cost.

Description

Tightening-free press riveting tightening connecting piece

Technical Field

The utility model relates to the technical field of fasteners, in particular to a tightening-free press riveting fastening connector.

Background

In the conventional industry, screw connection is a common fastening mode, in the conventional screw connection, bolts and nuts are required, a nut or a stud is firstly installed on a target body, for example, the nuts are welded or the studs are welded, then a fastened piece is placed, then a bolt and a nut are installed, a torque gun is required to be used for fastening and locking when the bolt and the nut are installed, the loosening in the subsequent use process is prevented, the whole process is relatively complicated, besides the cost of parts, the purchase cost of two parts, the cost of nut welding, the cost of bolt installation and the like and the additional management cost are relatively high, in addition, the fastening process is relatively high, in order to obtain the clamping force, the clamping force obtained through the fastening process is unstable, only can be indirectly controlled and cannot be directly controlled, if the friction coefficient is unstable, the clamping force is extremely large, and the problem that the fastened piece is crushed or the clamping force is insufficient to cause the loosening of the bolts is easy to occur.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides the tightening-free press riveting tightening connecting piece, which can be used for tightly connecting a fastened piece with a target body under the action of a press, and can accurately control the clamping force through the press, so that the tightening step is omitted, the whole installation process is convenient and rapid, the efficiency is improved, and the cost is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A tightening-free squeeze rivet fastening connection, the squeeze rivet fastening connection comprising a screw and a nut; one end of the screw is provided with a press riveting section, and the center of the press riveting section is provided with a counter bore; an external thread matched with the internal thread of the nut is arranged on the outer side of the other end of the screw rod, and the screw rod is in threaded connection with the nut through the external thread; the press riveting fastening connecting piece presses down the press riveting section of the screw rod through a press riveting tool, so that the fastened connection between the fastened piece and the target body is realized.

Further, the counter bore is coaxially arranged with the press riveting section.

Further, the depth of the counter bore is larger than the height of the pre-pressing rivet.

Further, the counter bore is a hexagon deep hole, and the aperture size of the counter bore is matched with the specification of the inner hexagonal wrench.

Further, an upper mounting hole and a lower mounting hole are respectively arranged on the fastened piece and the target body, and the upper mounting hole and the lower mounting hole are coaxially arranged up and down; and when in press riveting, the press riveting section of the screw rod sequentially penetrates through the lower mounting hole and the upper mounting hole from bottom to top.

Further, the upper mounting hole and the lower mounting hole are polygonal holes, and a plurality of vertical bar type bosses are uniformly arranged on the outer side of the middle part of the screw; the middle part of the screw rod is matched with the polygonal hole.

Further, the press riveting tool comprises a tool upper die, a support die and a press; the press presses down the screw rod through the upper die of the tooling; the support die is arranged below the target body and supports the nut.

Further, the upper die of the tool is of a T-shaped structure, a male die matched with the counter bore structure is arranged along the axial direction of the upper die of the tool, and the male die is arranged in the counter bore during press riveting.

Further, the upper part of the supporting die is provided with a groove matched with the nut.

The utility model has the beneficial effects that:

The utility model provides a pair of novel squeeze riveting fastening connection spare, simple structure, design benefit realizes exempting from to screw up through squeeze riveting and connects by fastener and target body, solves the trouble of screwing up the installation under operating condition effectively to solved current difficult problem such as how dismantlement, possess antitorque anti-drop performance, simple installation, rivet fastening, application scope is wide, squeeze riveting is rapid, energy-concerving and environment-protective, advantage such as with low costs

According to the utility model, through the design of the polygonal hole and the boss at the outer side of the middle part of the screw, the anti-rotation performance of the fastened piece and the target body can be enhanced.

Drawings

FIG. 1 is a schematic top view of a weld nut welded to a steel plate in the prior art;

FIG. 2 is a schematic view of a prior art bolt and weld nut after mating and tightening;

FIG. 3 is a cross-sectional view of a tightening-free squeeze rivet fastening connection of the present utility model;

FIG. 4 is a front view of a tightening-free squeeze rivet fastening connection of the present utility model;

FIG. 5 is a top view of the tightening-free squeeze rivet fastening connection of the present utility model;

FIG. 6 is a cross-sectional view of a tightening-free press rivet fastening connection and press rivet tooling mold of the present utility model;

FIG. 7 is a cross-sectional view of the tightening-free press-rivet fastening connection of the present utility model after press-rivet fastening is completed.

Wherein: 1-screw rod, 1.1-deep groove, 2-nut, 3-riveting plate, 4-lower cover plate, 5-upper die of tool and 6-supporting die.

Detailed Description

The following detailed description of specific embodiments of the utility model is provided in connection with the accompanying drawings and examples. The following examples are only illustrative of the present utility model and are not intended to limit the scope of the utility model.

Terms of the azimuth or positional relationship of the upper, lower, left, right, inner, outer, front end, rear end, head, tail and the like in the document of the present application are established based on the azimuth or positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.

In the present utility model, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected or detachably connected, integrally connected or mechanically connected, electrically connected or communicable with each other, directly connected or indirectly connected through an intermediate medium, or communicated between two components, or an interaction relationship between two components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

The embodiment describes a tightening-free squeeze rivet fastening connection, which can fasten a fastened piece and a target body together under the action of a press.

As shown in fig. 3 to 5, the squeeze riveting fastening connector comprises a screw 1 and a nut 2, wherein the screw 1 is a cylinder, and an external thread matched with an internal thread of the nut 2 is arranged on the outer side of one end of the screw 1 and is used for being in threaded connection with the nut 2. The other end of the screw rod 1 is provided with a press riveting section, the center of the press riveting section is provided with a coaxial counter bore 1.1 along the axial direction, the depth of the counter bore 1.1 is larger than the pre-pressing riveting height, and the fastening connecting piece of the embodiment can be used for fastening pieces and target bodies with different plate thicknesses only by increasing the length of the screw rod 1. Preferably, the counter bore 1.1 is a hexagon deep hole, and the aperture size of the counter bore 1.1 is matched with the specification of an inner hexagonal wrench, so that the nut 2 can be conveniently unscrewed after the sheet metal riveting is finished, and the disassembly is finished.

The press riveting fastening connecting piece and the press riveting worker are assembled to realize the fastening connection of the fastened piece and the target body, and the press riveting tool comprises a tool upper die 5, a supporting die 6 and a press. The whole upper die 5 of the tool is of a T-shaped structure, and a male die matched with the structure of the counter bore 1.1 is arranged along the axial direction of the upper die 5 of the tool. During press riveting, the male die is arranged in the counter bore 1.1, the upper tool die 5 presses down the screw 1 under the action of the press, and the clamping force can be accurately controlled through the press. The upper part of the supporting die 6 is provided with a groove matched with the nut 2 and used for supporting the press riveting operation of the press riveting fastening connecting piece.

In this embodiment, the press riveting fastening member is fastened and connected with the fastened member and the target body, as shown in fig. 6, the fastened member is a riveting plate 3, the target body is a lower cover plate 4, and the press riveting process is as follows:

1. The nut 2 is in threaded fastening connection with the screw 1, the riveting plate 3 is arranged above the lower cover plate 4, an upper mounting hole and a lower mounting hole are respectively formed in the riveting plate 3 and the lower cover plate 4, the upper mounting hole and the lower mounting hole are coaxially arranged up and down, the polish rod part of the screw 1 sequentially penetrates through the upper mounting hole of the riveting plate 3 and the lower mounting hole of the lower cover plate 4 from bottom to top, and the top end of the screw 1 is higher than the upper surface of the riveting plate 3;

2. The lower parts of the nut 2 and the screw 1 are arranged in the groove of the supporting die 6 and are supported below the lower cover plate 4 through the supporting die 6; the male die of the upper tool die 5 is arranged in the counter bore 1.1 of the screw 1, and the output end of the press is connected with the upper tool die 5;

3. The press drives the upper die 5 of the tool to apply pressure to the top of the screw 1 from top to bottom, the screw 1 is pressed downwards along with the force, and the riveting plate 3 is riveted until the riveting fastening is completed, as shown in fig. 7.

When the screw rod 1 is disassembled, a spanner is used for clamping the counter bore 1.1 on the screw rod 1, so that the screw rod 1 is prevented from rotating in the disassembling and assembling process, and the nut 2 is unscrewed to complete the disassembly.

Example two

The embodiment describes a tightening-free press-riveting tightening connecting piece, which has basically the same structure as the press-riveting tightening connecting piece of the first embodiment, and is characterized in that the upper mounting hole of the riveting plate 3 and the lower mounting hole of the lower cover plate 4 are polygonal holes, and a plurality of vertical bars of bosses are uniformly arranged on the outer side of the middle part of the screw 1 (namely, the screw 1 except the external thread part and the polished rod part outside the press-riveting section), so that the middle part of the screw 1 is matched with the polygonal holes, and the anti-rotation performance of the fastened piece and the target body can be increased after the fastened piece and the target body are fastened by using the press-riveting tightening connecting piece.

While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the implementations of the utility model and are not intended to limit the scope of the utility model. The details of the embodiments are not to be taken as limiting the scope of the utility model, and any obvious modifications based on equivalent changes, simple substitutions, etc. of the technical solution of the utility model fall within the scope of the utility model without departing from the spirit and scope of the utility model.

Claims (9)

1. The tightening-free press riveting fastening connecting piece is characterized by comprising a screw (1) and a nut (2); one end of the screw (1) is provided with a press riveting section, and the center of the press riveting section is provided with a counter bore (1.1); an external thread matched with the internal thread of the nut (2) is arranged on the outer side of the other end of the screw rod (1), and the screw rod (1) is in threaded connection with the nut (2) through the external thread; the press riveting fastening connecting piece presses down the press riveting section of the screw rod (1) through a press riveting tool to realize the fastening connection of the fastened piece and the target body.

2. Tightening-free press rivet fastening connection according to claim 1, characterized in that the counterbore (1.1) is arranged coaxially with the press rivet section.

3. Tightening-free press rivet fastening connection according to claim 1 or 2, characterized in that the counterbore (1.1) depth is greater than the pre-press rivet height.

4. A tightening-free squeeze riveter fastening connection as claimed in claim 3, wherein the counterbore (1.1) is a hexagonal deep hole, and the bore size of the counterbore (1.1) is matched with the socket wrench specification.

5. The tightening-free squeeze riveter fastening connection according to claim 1, wherein the fastened member and the target body are provided with an upper mounting hole and a lower mounting hole, respectively, which are coaxially arranged up and down; and when in press riveting, the press riveting section of the screw (1) sequentially penetrates through the lower mounting hole and the upper mounting hole from bottom to top.

6. The tightening-free squeeze riveter tightening connecting piece according to claim 5, wherein the upper mounting hole and the lower mounting hole are polygonal holes, and a plurality of vertical bar type bosses are uniformly arranged on the outer side of the middle part of the screw (1); the middle part of the screw rod (1) is matched with the polygonal hole.

7. The tightening-free press rivet fastening connection according to claim 1, characterized in that the press rivet tool comprises a tool upper die (5), a support die (6) and a press; the press presses down the screw (1) through the tooling upper die (5); the support die (6) is arranged below the target body and supports the nut (2).

8. The tightening-free press riveting tightening connecting piece according to claim 7, wherein the upper tool die (5) is of a T-shaped structure, a male die matched with the counter bore (1.1) in structure is arranged along the axial direction of the upper tool die (5), and the male die is arranged in the counter bore (1.1) during press riveting.

9. Tightening-free squeeze riveter fastening connection according to claim 7, characterized in that the upper part of the support die (6) is provided with a recess matching the nut (2).