TWM568913U - Locking member - Google Patents

Abstract

The present invention provides a fastener, which is mainly provided with a plurality of cutting bodies on the bottom surface of the screw head, a plurality of cutting ribs protruding from the bottom surface and extending radially outward from the rod body, and the cutting bodies and the cutting body The ribs are formed with the accommodating area. Therefore, when the ribs are locked, the double cutting joints of the cutting ribs and the cutting bodies can be used to cut the fibers that are not broken during the locking in a continuous manner, and perform chip cutting. Except for scraping, the accommodating area is used to assist in providing a part of the swarf capacity, so that the screw head and the lock compound are tightly locked, and when squeezing, the burrs are made by the pressing surface of each cutting body. The protrusion can be completely pressed in the home position, so that the flatness of the head after the lock positioning is effectively improved, and the fastening force after the locking is also greatly improved.

Description

Lock firmware

The present invention relates to a lock design, and in particular to a lock for improving the flatness and locking force of the lock.

Referring to FIG. 1 and FIG. 2, the conventional screw includes a screw head 11, a rod body 12 extending outward from the screw head 11, and a locking portion 13 opposite to the screw head 11 and formed at the other end of the rod body 12. And a screw 14 disposed on the rod body 12; wherein the screw head 11 has a top surface 111, a bottom surface 112 opposite to the top surface 111 and having a tapered shape, and a plurality of intervals are disposed on the bottom surface The rib 113 on the 112; when the screw 2 is locked and positioned in the lock compound 2 having the wood fiber, the lock portion 13 is first placed on a lock compound 2, and a tool is used. (not shown) is driven to interlock the screw head 11 to lock the locking portion 13 into the lock compound 2 until the bottom surface 112 of the screw head 11 comes into contact with the lock compound 2 At this time, the ribs 113 are used to cut the fibers which are not broken during the locking process, so that the screw head 11 is locked and positioned on the lock compound 2.

However, it has been found that, after the actual use, since the wood fibers of the lock compound 2 have elastic recovery characteristics, the strip-shaped and spaced-apart ribs 113 can only produce bismuth on the wood fibers during the rib 113 locking process. The pressure acts only, but the fiber cannot be cut effectively, so that the cutting effect is limited, and the fiber which is not broken is more likely to form a part around the screw head 11 when the screw head 11 contacts the surface of the lock compound 2. The raised burrs cause the screw head 11 to be flattened to the surface of the lock compound 2, resulting in poor flatness and locking effect after the lock, which needs to be improved.

Therefore, the purpose of the present invention is to provide a fastener which can increase the flatness of the screw head attached to the surface of the lock compound after the lock, and avoid the occurrence of burrs on the periphery of the screw head.

Therefore, the novel fastener comprises a screw head, a rod body, a locking portion and a screw segment; wherein the screw head has a top surface, and a bottom surface extending downward from the top surface and forming a tapered surface a plurality of cutting bodies on the bottom surface, a plurality of ribs protruding from the bottom surface, and a plurality of accommodating regions formed between the cutting bodies and the ribs, wherein each of the cutting systems faces the bottom surface Extending in the direction of the rod body, and each of the cutting bodies has a pressing surface forming a peripheral edge of the top surface and extending toward the rod body, a connecting surface and a cutting surface respectively connected to the pressing surface, and a connection a cutting edge formed by the surface contacting the cutting surface; further, the cutting ribs protrude from the bottom surface and extend radially outward from the rod body, and each of the ribs has two top walls respectively protruding from the bottom surface And the two top sill walls are connected to each other to form a guiding edge; that is, when the locking ribs are cut, the fibers of the locking nut are cut and unbroken by the ribs. And further cutting the chips by the cutting bodies, and then using the accommodating Assisting in providing a fitting arrangement in which a part of the chip is accommodated, so as to be closely engaged with the lock compound, and further, when the screw head continues to sink, the top surface is obtained by the press surface The design of the peripheral edge extending toward the rod body, when the screw head gradually contacts the surface of the lock compound, the burrs and the protrusions are completely pressed into the bore of the lock compound, so that the whole lock is effective not only The locking resistance is reduced, and at the same time, the flatness of the screw head flattened on the surface of the lock compound can be greatly effectively levied, thereby effectively accelerating the efficiency of lifting and locking.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.

Referring to FIG. 3 to FIG. 5, in the first preferred embodiment of the present invention, the locking member 3 includes a screw head 31, a rod body 32 extending outward from the screw head 31, and a screw head 31 opposite to the screw head 31. The locking portion 33 at the other end of the rod body 32, and a threaded portion 34 of the spiral ring disposed on the rod body 32; wherein the locking portion 33 can be a drill tail, a pointed tail, etc. in this embodiment. In the following description, a pointed tail structure is taken as an example.

In the foregoing, the screw head 31 has a top surface 311, a bottom surface 312 extending downward from the top surface 311 and connected to the rod body 32, and a plurality of cutting bodies 313 and a plurality of convex shapes formed on the bottom surface 312. a cutting rib 314 disposed on the bottom surface 312 and extending radially outward from the rod body, and a plurality of receiving regions 315 formed between the cutting body 313 and the cutting ribs 314; wherein each cutting body The 313 is extended from the top surface 311 toward the rod 32. In particular, the cutting body 313 preferably extends toward the rod 32 but is not connected to the rod 32, and each cutting body 313 has a formation. The pressing surface 3131 extending from the outer periphery of the top surface 311 and facing the rod body 32 is connected to the connecting surface 3132 and the cutting surface 3133 of the pressing surface 3131, respectively, and the connecting surface 3132 is connected to the cutting surface 3133. The cutting edge 3134 is formed, and the pressing surface 3131 extends from the top surface 311 toward the rod 32, and can form a tapered design, and each connecting surface 3132 is cut from the cutting body 313. The edge 3134 extends to a section 3133 of another adjacent cutting body 313, such as shown in Figures 4 and 5, which may be extended Extending to be connected to the bottom edge of the adjacent cutting edge 3131 opposite to the cutting edge 3134, so that the cutting bodies 313 can be continuously joined to form a stepped configuration, and in the embodiment, the connecting surface 3132 can be The curved surface is designed such that the cutting edge 3134 is formed in an inclined manner due to the curved surface design of the connecting surface 3132; further, the cutting ribs 314 are disposed at intervals and can be respectively associated with the cutting body 32 is connected or unconnected, and the ribs 314 are connected to the rod body 32 as an example, and each of the ribs 314 has two tops which are respectively protruded from the bottom surface 312 and can be arranged in an arc shape. The wall 3141 has a guiding edge 3142 formed in contact with each other, and the top wall 3141 of each of the ribs 314 is also curved to facilitate cutting.

Furthermore, the extension of the cutting ribs 314 may correspond to the cutting bodies 313. For example, at least one of the ends of the ribs 314 extends from the rod body 32, and the other end extends to meet the cutting. The body 313 (shown in Figures 4 and 5), of course, the other end may also be adjacent to but not adjacent to the cutting body 313 (not shown), and the other end of the cutting rib 314 may extend to meet To any of the foregoing faces of the cutting body 313, only the ribs 314 extend from the shank 32 to be connected to each of the connecting faces 3132; or, as shown in FIGS. 6-7 The cutting ribs 314 extend respectively corresponding to the portion of the cutting body 313 such that when one end of the rib 314 extends radially outward from the rod 32, the other end of the rib 314 is partially and partially The cutting body 313 is fitted so that the partial cutting body 313 can be matched with the extension of the cutting rib 314, and the other part of the cutting body 313 is not equipped with the extension of the cutting rib 314 (as shown in FIG. 8). Similarly, the cutting is performed. The extension of the rib 314 can extend to abut any surface of the cutting body 313 (such as on the connecting surface 3132; as shown in Figures 7, 8), or can be extended Adjacent to the cutting body 313 (not shown), each of the accommodating regions 315 can be formed between the cutting body 313 and the rod 32 and between the two adjacent ribs 314, and below For the description of the operation, only the structure shown in FIG. 6 is taken as an example. As a result, the accommodating area 315 is further configured by the curved surface of the connecting surface 3132, so that the accommodating space of the accommodating area 315 is effective. expand.

In particular, in the embodiment, an arrangement of the pressing teeth 35 may be further disposed on the rod body 32, and the pressing teeth 35 are located between the threaded portion 34 and the screw head 31. The tooth 35 can assume a helical shape, and the helical angle of the pressing teeth 35 can be different from the helical angle of the screw segment 34 to continue the screw segment 34 for subsequent locking cooperation.

Referring to FIG. 6 to FIG. 9 , when the screwing operation is performed, a driving tool (not shown) is used to apply a locking torque to the screw 31 so that the locking portion 33 simultaneously drives the screw segment 34 for drilling. A hole 41 is formed on a lock compound 4 (such as a hardwood), and the fiber of the lock compound 4 is cut, so that the lock 3 can be quickly screwed into the lock compound 4 When the pressing teeth 35 continue to enter the screw segment 34, the tightening teeth 35 and the thread segments 34 are arranged in different thread forms, and the lock compound is added. The elastic recovery characteristic of the fiber of 4 can push the chip inward, so that the pressing teeth 35 can be firmly engaged with the inner wall of the lock compound 4 to achieve the loosening effect until the screw head 31 When advancing toward the surface of the lock compound 4, the guide edge 3142 of the ribs 314 can be used as a guide for the front cutting, that is, the guide edge 3142 is directed to the drill adjacent to the lock compound 4. The fiber 41 is cut around the hole 41 and is not cut by the screw segment 34, and the width of the hole 41 is gradually increased during the cutting process, and then The cutting edge 3134 is successively cut, so that the cutting edge 3134 cooperates with the guiding edge 3142 to achieve progressive double cutting action to cut and scrape the fiber, thereby effectively preventing the screw head 31 from being improperly wound by unbroken fibers. The locking resistance is formed, and during the cutting process of the screw head 31, the curved surface formed by the connecting surface 3132 connected to the cutting edge 3134 is designed so that a part of the chip generated during the locking can be along the connecting surface 3132. The outer discharge is performed to prevent excessive chips from accumulating in the lock compound 4 to reduce the locking resistance and avoid cracking, and the accommodating space of the accommodating area 315 can also provide partial swarf accommodation. In this way, the locking member 3 can be tightly engaged with the lock compound 4 to enhance the locking force, and effectively prevent the chip from being able to be accommodated, thereby causing the lock compound 4 to generate a cracked material, and further, when When the screw head 31 gradually sinks into the lock compound 4, if there are still fibers or chips protruding on the surface of the lock body 4 to cause burrs or protrusions (Fig. 9) As shown), the extension of the pressing surface 3131 can be designed at this time. Pressing the burrs, protrusions and portions into the surface direction (as shown in FIG. 10), so that the burrs or protrusions are completely pressed into the bore 41 of the lock compound 4, thereby allowing The top surface 311 of the screw head 31 after the locking and positioning is flush with the surface of the lock compound 4 (as shown in FIG. 11 ), thereby lifting the lock compound 4 to the lock member 3 after the lock is lifted. The flatness is more advantageous for improving the fastening force after the lock.

Referring to FIG. 12, a second preferred embodiment of the present invention still includes the main components described in the previous embodiment, and the embodiment is particularly characterized in that the screw segment 34 has a locking portion 33. a tapping tooth 341, a curved tooth 342 connected to the tapping tooth 341, and a locking tooth 343 connected to the curved tooth 342, wherein the curved tooth of the curved tooth 342 has a high and a low bending The arc is formed to form a wave state as shown in the figure, and the maximum outer diameter D2 of the curved tooth 342 is smaller than the maximum outer diameter D3 of the locking tooth 343 and larger than the maximum outer diameter D1 of the tapping 341; Therefore, the tapping teeth 341, the curved teeth 342 and the locking teeth 343 having different thread diameters of the screw segments 34 are disposed, so that the locking portion is assisted by the tapping teeth 341 during the locking process. 33, in the case of the drill lock, the preliminary drilling effect is first performed, and the tooth profile design of the curved tooth 342 different from the tapping 341 is reused, so that the curved tooth 342 is snail along the tapping 341 The trajectory of the input continues to perform different screw cutting operations, that is, the curved teeth 342 can increase the cutting point to enhance the cutting effect for fast cutting and reducing resistance. At the same time, the undulating design of the curved tooth 342 not only can be used for chip removal, but also can be used for partial chipping to facilitate loosening and avoiding cracking, and the maximum outer diameter D2 of the curved tooth 342 is greater than The maximum outer diameter D1 of the tapping teeth 341 is more advantageous for reaming and chip removing. When the locking teeth 343 having the larger outer diameter D3 are successively locked, the chips from the curved teeth 342 can be re-secured. Pressing inwardly to increase the bite force between the locking teeth 343 and the lock compound 4 (not shown) to increase the pulling force; therefore, the screw segments 34 have three different types of threads 341. The overall spiral shape of 342 and 343 can facilitate rapid drilling and lowering the screwing resistance, and avoid the use of the hardwood-like lock compound 4 to produce cracked material due to improper chipping, and also facilitate subsequent rotation. After the lock, the screw head 31 is flattened to improve the flatness, and the stitching positioning effect can be achieved.

Referring to FIG. 13, a third preferred embodiment of the present invention further includes the member according to the second preferred embodiment in this embodiment. In this embodiment, in particular, each of the curved teeth 342 is opened. The plurality of incisors 3421 are designed, and the incisors 3421 are disposed in different orientations according to the different curvatures of the curved teeth 342. Therefore, the design of the plurality of incisors 3421 on the curved teeth 342 can be assisted. The thread cutting and cutting ability of the screw segment 34 and the rapid chipping also contribute to the chip removing operation, and the frictional resistance and the torsion force generated during the screwing can be greatly reduced effectively. Of course, the cutting teeth 3421 can be used for locking. In time, the chip can be used to increase the bite between the lock 3 and the lock compound 4, thereby increasing the pulling force, thereby not only improving the locking efficiency, but also effectively increasing the overall locking of the lock 3 and the lock compound. The fastening force between 4 (not shown) also facilitates the improvement of the flatness of the screw head 31 after the subsequent twisting, so that the stable locking positioning effect is achieved.

In summary, the novel fastener is provided with a plurality of cutting bodies on the bottom surface, a plurality of cutting ribs protruding from the bottom surface and a plurality of accommodating regions, so that the locking is achieved by the cutting. The rib cooperates with the cutting body to produce a double cutting action, and the chip is scraped off by the continuous cutting method for the fiber which is not broken during the screwing, thereby effectively reducing the locking torque, and the accommodating area It can also provide part of the chip storage after cutting, thereby effectively improving the tightness of the lock, and at the same time, the burrs and protrusions formed around the bore of the lock compound can also continue to sink in the screw head during the lock. When entering, it is completely pressed by the cutting body, so that the flatness after the locking is greatly effective, and the locking force after the locking is also greatly improved, and the utility can be achieved. The purpose of the new type.

However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the new specification. All should remain within the scope of this new patent.

(known)

1‧‧‧ screws

11‧‧‧ screw head

12‧‧‧ rod body

13‧‧‧Locking Department

14‧‧‧ thread

111‧‧‧ top surface

112‧‧‧ bottom

113‧‧‧ rib

2‧‧‧Lock compound

21‧‧‧Drilling

(this new type)

3‧‧‧Locker

31‧‧‧ screw head

32‧‧‧ rod body

33‧‧‧Locking Department

34‧‧‧ thread segments

35‧‧‧Forcing teeth

311‧‧‧ top surface

312‧‧‧ bottom

313‧‧‧ cutting body

314‧‧‧ rib

315‧‧‧Receiving area

3131‧‧‧Compressed noodles

3132‧‧‧ Connection surface

3133‧‧‧faced

3134‧‧‧ cutting edge

3141‧‧‧Top wall

3142‧‧‧guide blade

341‧‧‧Tapping

342‧‧‧Bend teeth

343‧‧‧Locked teeth

3421‧‧‧ teeth

D1‧‧‧Tapping outer diameter

D2‧‧‧ Bending teeth outer diameter

D3‧‧‧Locked tooth outer diameter

4‧‧‧Lock compound

4 1‧‧‧Drilling

Figure 1 is a schematic view of a conventional screw. Figure 2 is a cross-sectional view taken along line A-A of Figure 1. Figure 3 is a schematic view of an embodiment of the first preferred embodiment of the present invention. 4 and 5 are schematic cross-sectional views taken along line B-B of Fig. 3. Figure 6 is a schematic view of another embodiment of the first preferred embodiment of the present invention. 7 and 8 are schematic cross-sectional views taken along line C-C of Fig. 6. 9 to 11 are schematic views showing the locked state of the first preferred embodiment. Figure 12 is a schematic view of a second preferred embodiment of the present invention. Figure 13 is a schematic view of a third preferred embodiment of the present invention.

Claims (10)

A lock body comprising a screw head, a rod body extending outward from the screw head, a locking portion opposite to the screw head and formed at the other end of the rod body, and a spiral ring disposed on the rod body a threaded section; wherein the screw head has a top surface, a bottom surface extending downwardly from the top surface and having a tapered shape and connected to the rod body; wherein the screw head comprises a bottom surface formed thereon a plurality of cutting bodies, a plurality of ribs protruding from the bottom surface, and a plurality of accommodating regions formed between the cutting bodies and the ribs; wherein each cutting system is oriented from the top surface toward the rod body Extendingly, each of the cutting bodies has a pressing surface formed on a periphery of the top surface and extending toward the rod body, respectively connecting a connecting surface and a cutting surface of the pressing surface, and a connecting surface and the connecting surface The cutting edges are formed by the cutting edges formed by the cutting surfaces; and the cutting ribs are protruded from the bottom surface and extend radially outward from the rod body, and each of the ribs has two top wall portions respectively protruding from the bottom surface, and the ribs respectively The two top walls are joined to form a guiding edge. The fastener of claim 1, wherein at least each of the rib extensions corresponds to each cutting body. The fastener according to claim 2, wherein the pressing surface is tapered from the top surface toward the rod body, and each connecting surface extends from the cutting edge of the cutting body to another Adjacent to the cut surface of the cutting body. The fastener according to claim 1, wherein the cutting ribs respectively extend to correspond to a portion of the cutting body, and each accommodating portion is formed between the cutting body and the rod body and located in two phases Between adjacent ribs. The fastener according to claim 4, wherein the pressing surface is tapered from the top surface toward the rod body, and each connecting surface extends from the cutting edge of the cutting body to another A section of an adjacent cutting body. The fastener according to any one of claims 1 to 5, wherein the thread segment has a tapping tooth disposed on the latching portion, a curved tooth connected to the tapping tooth, and a locking tooth coupled to the curved tooth, wherein the curved outer tooth has a maximum outer diameter smaller than a maximum outer diameter of the locking tooth. The fastener according to claim 6, wherein each of the curved teeth is provided with a plurality of cutting teeth. The fastener according to any one of claims 1 to 5, further comprising a pressing tooth between the threaded portion and the screw head on the rod body. The fastener according to any one of claims 1 to 5, wherein the top wall of each of the ribs is curved. The fastener according to any one of claims 1 to 5, wherein the connecting surface has a curved surface design.