CN209781429U - Press-riveting anti-twisting screw - Google Patents

Abstract

The utility model relates to the technical field of screws, and discloses a pressure riveting anti-twisting screw, wherein a screw head and a screw rod are integrally formed, the screw head is provided with an inner surface butted with the screw rod, the inner surface of the screw head is convexly provided with more than one protruding part, the protruding parts are arranged around the inner surface of the screw head, and a surrounding cavity is formed between the protruding parts and the inner surface of the screw head; therefore, when the screw is pressed into the fixing piece, the protrusion on the screw head is meshed with the fixing piece to be fixed, on one hand, the protrusion can provide larger pressure, so that the friction force between the screw and the fixing piece can be increased, the protrusion is pressed against the surface of the fixing piece to enable the fixing piece to generate plastic deformation, and the protrusion is embedded into the fixing piece; on the other hand, when the screw is riveted to the pressure, mounting plastic deformation can rise and fasten the cavity that closes of enclosing of screw rod root to locking the mounting better, and then promoting the fixed effect of screw, have very strong practicality.

Description

Press-riveting anti-twisting screw

Technical Field

The patent of the utility model relates to a technical field of screw particularly, relates to press and rivet anti-twist screw.

Background

The screw is indispensable industry requisite in daily life: extremely small screws used for cameras, glasses, clocks, electronics, and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and screw heads are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes.

At present, a screw generally includes a screw head and a screw rod, the screw rod is screwed into a drilled hole by rotating the screw head, and the inner surface of the screw head covers and presses against the drilled hole to fix a fixing member.

Among the prior art, the internal surface of screw head is generally planar to be arranged, and like this, at the in-process of screw head closing cap, the clamping force between screw head and the mounting is not enough to lead to the not good enough problem of screw fixation effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a press-riveting prevents turning round the screw, aims at solving prior art, the not good enough problem of screw fixation effect.

The utility model discloses a realize like this, press and rivet anti-twist screw, including screw head and screw rod, the screw head with screw rod integrated into one piece, the screw head have with the internal surface of screw rod butt joint, the protruding portion that is equipped with of internal surface of screw head, the protruding portion encircle in the outside of screw head is arranged, the protruding portion with enclose between the internal surface of screw head and close the formation and enclose and close the cavity.

Further, the protruding part is provided with a protruding surface deviating from the inner surface of the screw head, and the protruding surface of the protruding part is flat.

Further, the protruding surface of the protruding portion is arranged in parallel with the inner surface of the screw head.

Further, the root of the screw is provided with an annular groove arranged around the periphery of the screw.

Further, the annular groove is formed above an inner surface of the screw head, a thread is formed at an outer circumference of the screw rod, the thread is wound along an axial direction of the screw rod, and the annular groove is formed below the thread.

Furthermore, the ring channel has lower anchor ring face and is located the last anchor ring face of anchor ring face top, go up anchor ring face and lower anchor ring face and encircle respectively arrange the periphery of screw rod, and follow the radial of screw rod outwards extends, go up anchor ring face, lower anchor ring face and the surface of screw rod and surround and form the ring channel, the ring channel is the level form and arranges down.

Further, the upper ring surface is arranged obliquely downward in a radially outward extending direction of the screw.

Further, the protruding portion is arranged at intervals, the outer side edge of the protruding portion is arranged in alignment with the outer peripheral edge of the screw head, the protruding portion is provided with an inner side edge arranged towards the screw rod, and the inner side edge of the protruding portion is arranged in an arc line shape.

Furthermore, the protruding parts are integrated, the adjacent protruding parts are connected through a connecting part, and the connecting part is convexly arranged on the inner surface of the screw head; the protruding part is arc-shaped and is bent outwards towards the screw rod.

Further, the outer side edge of the connecting portion is arranged in alignment with the outer peripheral edge of the screw head.

Compared with the prior art, the utility model provides a press-riveting torsion-proof screw, through arranging the protruding portion at the internal surface of screw head, like this, when impressing the screw on the mounting, the protruding portion interlock on the screw head is on the mounting that needs to fix, and on the one hand, the protruding portion can provide bigger pressure, therefore can increase the frictional force between screw and the mounting, and the protruding portion supports and presses at the mounting surface and makes the mounting produce plastic deformation, and the protruding portion imbeds in the mounting; on the other hand, when the screw is riveted to the pressure, mounting plastic deformation can rise and fasten the cavity that closes of enclosing of screw rod root to locking the mounting better, and then promoting screw 1's fixed effect, having very strong practicality.

Drawings

Fig. 1 is a schematic view of a press-riveting anti-twisting screw provided by the present invention;

Fig. 2 is a schematic view of the press-riveting anti-twisting screw provided by the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-2, the preferred embodiment of the present invention is shown.

The press-riveting anti-twisting screw comprises a screw head 10 and a screw rod 20, wherein the screw head 10 and the screw rod 20 are integrally formed, the screw head 10 is provided with an inner surface 15 butted with the screw rod 20, a protruding portion 12 is convexly arranged on the inner surface 15 of the screw head 10, the protruding portion 12 is arranged around the outer portion of the screw head 10, and a cavity 11 is enclosed between the protruding portion 12 and the inner surface 15 of the screw head 10.

In the rivet-pressing anti-twisting screw, the protrusion 12 is arranged on the inner surface 15 of the screw head 10, so that when the screw 1 is pressed into the fixing piece, the protrusion 12 on the screw head 10 is engaged with the fixing piece to be fixed, on one hand, the protrusion 12 can provide larger pressure, so that the friction force between the screw 1 and the fixing piece can be increased, the protrusion 12 is pressed against the surface of the fixing piece to plastically deform the fixing piece, and the protrusion 12 is embedded into the fixing piece; on the other hand, when riveting screw 1, mounting plastic deformation can rise and fasten to enclosing of screw rod root and close in cavity 11 to lock the mounting better, and then promote screw 1's fixed effect, have very strong practicality.

The protruding part 12 has a protruding surface deviating from the inner surface 15 of the screw head 10, and when the screw 1 is pressed into the fixing member, the protruding part 12 of the screw head 10 is pressed against the surface of the fixing member, and the protruding surface of the protruding part 12 is flat, so that the protruding surface and the fixing member can be more tightly attached together, and the fixing effect of the screw 1 is improved.

In addition, the protruding surfaces of the protruding parts 12 and the inner surface 15 of the screw head 10 are arranged in parallel, so that the protruding surfaces and the screw head 10 are attached to the fixing member at the same angle in the process of pressing the screw 1 in, and the stress between the protruding parts 12 is uniform, so that a better fixing effect is achieved.

Further, an annular groove 13 is provided at the root of the screw 20, and the annular groove 13 is arranged around the outer periphery of the screw 20.

The annular groove 13 is positioned above the inner surface 15 of the screw head 10, the screw thread is formed on the periphery of the screw rod 20, the screw thread is coiled along the axial direction of the screw rod 20, the annular groove 13 is formed below the screw thread, and the screwing position of the screw rod 20 can be limited by the annular groove 13, so that when the screw is pressed on the annular groove 13, the screw head 10 is pressed on the periphery of the annular groove 13, and the situation of screw slipping and the like can be prevented.

The annular groove 13 has a lower annular surface and an upper annular surface located above the lower annular surface, the upper annular surface and the lower annular surface are respectively arranged around the periphery of the screw rod 20 and extend outwards along the radial direction of the screw rod 20, the outer surfaces of the upper annular surface, the lower annular surface and the screw rod 20 are surrounded to form the annular groove 13, and the lower annular surface is arranged in a horizontal shape.

the upper ring surface is arranged obliquely downwards along the radial direction of the screw rod 20, and along with the pressing-in of the screw 1, the upper ring surface of the annular groove 13 is slowly pressed on the surface of the fixing piece, so that the periphery of the fixing piece is plastically deformed, and the annular groove 13 is embedded into the fixing piece to further limit the position of the screw 1, thereby better locking the fixing piece.

In addition, the head of the screw rod 20 has a guiding end, and the outer circumference of the guiding end gradually shrinks along the direction away from the screw head 10, so that the guiding end can play a guiding role in the process of pressing the screw 1 into the fixing piece.

The protruding parts 12 are arranged at intervals, the outer side edges of the protruding parts 12 are arranged in alignment with the outer peripheral edge of the screw head 10, and when the protruding parts 12 are pressed against the fixing piece, the protruding parts have larger resisting moment, so that the protruding parts are matched with the fixing piece more firmly; the protruding portion 12 has an inner side disposed toward the screw 20, and the inner side of the protruding portion 12 is disposed in an arc shape.

Or, the protruding parts 12 are integrated, the adjacent protruding parts 12 are connected through the connecting part 14, and the connecting part 14 is arranged on the inner surface 15 of the screw head 10 in a protruding way; the protruding part 12 is arc-shaped and is convexly bent towards the screw rod 20, an external notch is formed at the bent part, the contact area of the protruding part 12 and the fixing piece is further reduced, and the pressure of the protruding part 12 to the fixing piece is increased.

The outer side edge of the connecting portion 14 is aligned with the peripheral edge of the screw head 10, the connecting portion 14 is arranged on the peripheral edge of the screw head 10, so that the resisting moment between the connecting portion 14 and the fixing piece can be increased, the screw 1 is not easy to loosen, and the fixing effect of the screw 1 is further enhanced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The press-riveting anti-torsion screw is characterized by comprising a screw head and a screw rod, wherein the screw head is integrally formed with the screw rod, the screw head is provided with an inner surface butted with the screw rod, at least one protruding part is convexly arranged on the inner surface of the screw head, the protruding part is surrounded on the outer portion of the screw head, and the protruding part and the inner surface of the screw head are surrounded to form a surrounding cavity.

2. The clinch anti-torque screw of claim 1, wherein the projection has a projection surface facing away from the inner surface of the screw head, the projection surface of the projection being flat.

3. The clinch anti-torque screw of claim 2, wherein the protruding face of the protrusion is arranged in parallel with the inner surface of the screw head.

4. The clinch anti-torque screw of claim 1, wherein the root of the shank is provided with an annular groove disposed around the periphery of the shank.

5. The clinch anti-twist screw of claim 4, wherein the annular groove is formed above an inner surface of the screw head, an outer circumference of the screw rod is formed with a thread, the thread is wound along an axial direction of the screw rod, and the annular groove is formed below the thread.

6. The clinch-riveting anti-torque screw according to claim 4, wherein the annular groove has a lower annular surface and an upper annular surface located above the lower annular surface, the upper annular surface and the lower annular surface are respectively arranged around the outer circumference of the screw rod and extend outward in the radial direction of the screw rod, the annular groove is formed by the upper annular surface, the lower annular surface and the outer surface of the screw rod, and the lower annular surface is arranged horizontally.

7. The clinch anti-torque screw of claim 6, wherein the upper ring is disposed obliquely downward in a radially outward extending direction of the shank.

8. The clinch anti-torque screw of any one of claims 1 to 7, wherein the projections are spaced apart, outer sides of the projections are aligned with an outer peripheral edge of the screw head, the projections have inner sides disposed toward the screw shaft, and the inner sides of the projections are arranged in an arc.

9. The rivet-pressing anti-torsion screw according to any one of claims 1 to 7, wherein the protruding portions are integrated, adjacent protruding portions are connected through a connecting portion, and the connecting portion is convexly arranged on the inner surface of the screw head; the protruding part is arc-shaped and is bent outwards towards the screw rod.

10. The clinch anti-twist screw of claim 9, wherein the outer side edge of the connecting portion is aligned with the peripheral edge of the screw head.