容屑式防松木螺钉

Abstract

本实用新型公开了一种容屑式防松木螺钉，包括依次连接的螺头、螺杆和自攻尖头，所述螺头形成于螺杆一端，所述自攻尖头形成于螺杆另一端，所述螺头呈倒锥形，该螺头的锥形壁面上设有径向间隔环绕的容屑凹槽，所述螺杆包括光滑段和螺纹段，其中光滑段靠近螺头设置，螺纹段靠近自攻尖头设置，所述自攻尖头表面设有一斜刀槽。通过上述方式，本实用新型容屑式防松木螺钉通过容屑凹槽收纳拧入时的木屑毛刺，避免堆积阻碍螺头拧入，确保与木材紧密贴合，消除传统螺钉表面凸起问题，降低拧入阻力，增强连接强度，实现长效稳固的贴合连接。

Claims

1. A self-chucking wood screw, characterized by, include: A screw head, a screw rod, and a self-tapping tip are connected in sequence, with the screw head formed at one end of the screw rod and the self-tapping tip formed at the other end of the screw rod. The screw head is inverted conical in shape, and the conical wall surface of the screw head is provided with radially spaced chip-reducing grooves. The screw includes a smooth section and a threaded section, wherein the smooth section is located near the screw head and the threaded section is located near the self-tapping tip, and the surface of the self-tapping tip is provided with a slanted groove.

2. A self-contained check wood screw as defined in claim 1 wherein, The top of the screw head is provided with a concave driving groove, which is a plum blossom-shaped groove.

3. A self-contained check wood screw as defined in claim 1 wherein, The cone angle of the screw head is 70°-100°.

4. A self-contained check wood screw as defined in claim 1 wherein, The projected shape of the chip-receiving groove is fan-shaped, and the depth of the chip-receiving groove gradually decreases from the edge of the screw head towards the central axis of the screw head, with a depth of 0.5-2mm.

5. A self-contained check wood screw as defined in claim 1 wherein, The number of chip-receiving grooves is 3-10, and the screw head wall between two adjacent chip-receiving grooves forms a smooth transition arc surface.

6. A self-contained check wood screw as defined in claim 1 wherein, The diameter of the smooth section is smaller than the maximum outer diameter of the threaded section, and the length of the smooth section is 1 / 5 to 1 / 2 of the total length of the screw.

7. A self-contained check wood screw as defined in claim 1 wherein, The smooth section and the threaded section are connected by a transition structure, which is a raised thread transition ridge.

8. A self-chucking wood screw according to claim 7, wherein The thread transition edge is in the shape of a spiral band.

9. A self-chucking wood screw as defined in claim 1 wherein, The pitch of the threaded section is 2.0-4.0 mm.

10. A self-contained check wood screw as defined in claim 1 wherein, The oblique groove extends from the tip of the self-tapping tip to the end of the threaded section.

Images