CN203879884U - Wood screw - Google Patents
Wood screw Download PDFInfo
- Publication number
- CN203879884U CN203879884U CN201420112414.9U CN201420112414U CN203879884U CN 203879884 U CN203879884 U CN 203879884U CN 201420112414 U CN201420112414 U CN 201420112414U CN 203879884 U CN203879884 U CN 203879884U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- described screw
- nut
- threaded rod
- stage casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a wood screw which comprises a threaded rod. The head of the threaded rod is sleeved with a nut. A drill bit part is formed at the tail end of the threaded rod. The nut comprises a disc body and an extending part. The extending part is connected between the edge of the disc body and the threaded rod. The radius of the section of the extending part is gradually reduced from the joint portion between the extending part and the edge of the disc body to the joint portion between the extending part and the threaded rod. A first cutting rib is arranged on the extending part. A second cutting rib is arranged on the middle section of the threaded rod and arranged around the threaded rod spirally. A thread part is further arranged between the middle section of the threaded rod and the drill bit portion at the tail end of the threaded rod. Threads of a sawtooth shape are wound around the thread part on the surface of the threaded rod circumferentially. In conclusion, according to the wood screw, a hole can be drilled through the structure of the wood screw, a wood board is prevented from cracking, and smoothness of the surfaces of the nut and the wood board is maintained.
Description
Technical field
The utility model relates to a kind of wood screw.
Background technique
Wood screw is a kind of screw being exclusively used on timber, its structure is similar to the mechanical screw of mechanical field, but the screw thread on screw rod is special wood screw screw thread, can directly screw in Wood member (or part), for one, metal (or nonmetal) part with through hole and a Wood member are fastened together.
In prior art, in the Chinese utility model patent prospectus that is 201120493358.4, disclose a kind of wood screw in the patent No., the nail bar of this wood screw adopts twist drill cutting slot to be combined with wood screw thread feature.This wood screw is characterised in that: this nail bar is used for reference cutting edge and the groove of twist drill, carries out drilling bamboo steel; Utilize be threaded two blocks of bamboo steel plates or fixed connecting piece on nail bar; Ailhead conical surface, with corner angle, makes ailhead go deep into bamboo steel for cutting bamboo steel formation taper counterbore; Ailhead end face is with cross recess, for connecting automatic fitting tool; Whole nail bar is inverted cone-shaped, improves fastening effect.Can simplify the connection of bamboo steel, without pre-drilled, directly hammer into, save cost of labor, accelerate speed of application.
But, the wood screw of above-mentioned patent, need on plank, get out in advance a preforming hole with hand drill, then wood screw is stretched into tapping, while running due to the drill bit of hand drill, impact force is larger, so be easy to cause plank face checking, in addition, be screwed into the wood screw of above-mentioned patent on plank time, while being screwed to nut position, because nut surface is smooth and without screw thread, so nut can only be pressed in plank firmly, adopt and just caused in this way nut to be difficult to be compressed into nut completely, understand some and protrude the outside at plank, cause the surface of plank to seem smooth not.
Model utility content
Technical problem to be solved in the utility model is to provide one can utilize self structure to hole for the above-mentioned state of the art, prevents plank cracking, keeps the wood screw of nut and plank surfacing.
For achieving the above object, the utility model provides following technological scheme:
A kind of wood screw, includes screw rod, comprises successively vertically head, stage casing and tail end on described screw rod, and the head of described screw rod is socketed with nut, wherein,
The tail end of described screw rod is formed with bit head, described nut includes disc-shaped body and extension part, described extension part is connected between the edge and described screw rod of described disc-shaped body, and the section radius of described extension part from the joint at the edge of described body towards dwindling gradually with the joint of described screw rod;
On described extension part, be provided with the first cutting muscle;
On the stage casing of described screw rod, be provided with the second cutting muscle, and described the second cutting muscle is spiral around described screw rod setting;
Between the stage casing of described screw rod and the bit head of described screw rod tail end, be also provided with screw section, on described screw section, be circumferentially arranged with the screw thread of indentation along the surface of described screw rod.
Adopt the wood screw of this structure, owing to being provided with the first cutting muscle on extension part, therefore can utilize easily the surface of the first cutting muscle cutting panels of wood, make the surface that is absorbed in plank that the nut of wood screw can be smooth, allow plank surface seem more clean and tidy, in addition, because the tail end at screw rod is provided with bit head, can hole voluntarily, and not want again the instrument of the external applications such as extra use hand drill; Be provided with the second cutting muscle in the stage casing of screw rod, the second cutting muscle can provide extra cutting force in the time that screw pierces timber, prevents hard wood cracking, screws in moment of torsion larger, improves and attacks speed, carries out more easily tapping; In addition, be also provided with jagged screw section, than traditional spiral thread, the cutting power of flexuose screw thread is stronger, screw is had shoot the ability of hard plate material, and before installing without pre-drilled, increase work efficiency.
Preferably described screw rod is provided with contracting bar between the stage casing of described screw rod and described countersunk head nut as of the present utility model, and the radius of described contracting bar is less than respectively the radius in the radius of described countersunk head nut and the stage casing of described screw rod.
Adopt the wood screw of this structure, between the sheet material that can prevent from being connected, become flexible the cracking with softwood.
As improvement of the present utility model, described bit head includes two interconnective blade parts, and two blade parts are formed with tip in both joints, two described blade parts centered by tip, radially be symmetricly set on most advanced and sophisticated both sides.
Adopt the wood screw of this structure, bit head is actually is responsible for setting out on the surface of plank a shallow bore hole, holed by jagged screw section again, so bit head is arranged to two symmetrical blade parts that connect, utilize tip to get shallow bore hole, then by rotary drill bit portion, wood screw is squeezed in plank stably.
In sum, compared with prior art, the utility model has the advantage of: it is that one can utilize self structure to hole, prevent plank cracking, keep the wood screw of nut and plank surfacing.
Brief description of the drawings
Fig. 1 is the perspective view of wood screw in the utility model embodiment;
Fig. 2 is the plan view of wood screw in the utility model embodiment;
Fig. 3 is the structural representation of bit head in the embodiment shown in Fig. 2.
Reference character:
1, screw rod; 2, head; 3, stage casing; 4, tail end; 4.1, bit head; 4.1.1, blade part; 4.1.2, tip; 5, nut; 5.1, disc-shaped body; 5.2, extension part; 5.2.1, the first cutting muscle; 6, the second cutting muscle; 7, screw section; 8, contracting bar.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1-Figure 3, for an embodiment of the present utility model, the present embodiment is a kind of wood screw, include screw rod 1, on described screw rod, comprise successively vertically head 2, stage casing 3 and tail end 4, the head of described screw rod is socketed with nut 5, the tail end of described screw rod is formed with bit head 4.1, described nut includes disc-shaped body 5.1 and extension part 5.2, described extension part is connected between the edge and described screw rod of described disc-shaped body, and the section radius of described extension part from the joint at the edge of described body towards dwindling gradually with the joint of described screw rod, on described extension part, be provided with the first cutting muscle 5.2.1, on the stage casing of described screw rod, be provided with the second cutting muscle 6, and described the second cutting muscle is spiral around described screw rod setting, between the stage casing of described screw rod and the bit head of described screw rod tail end, be also provided with screw section 7, on described screw section, be circumferentially arranged with the screw thread of indentation along the surface of described screw rod.
Described screw rod is provided with contracting bar 8 between the stage casing of described screw rod and described countersunk head nut, and the radius of described contracting bar is less than respectively the radius in the radius of described countersunk head nut and the stage casing of described screw rod.
Described bit head includes two interconnective blade part 4.1.1, and two blade parts are formed with most advanced and sophisticated 4.1.2 in both joints, two described blade parts centered by tip, radially be symmetricly set on most advanced and sophisticated both sides.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. a wood screw, includes screw rod, comprises successively vertically head, stage casing and tail end on described screw rod, and the head of described screw rod is socketed with nut, it is characterized in that:
The tail end of described screw rod is formed with bit head, described nut includes disc-shaped body and extension part, described extension part is connected between the edge and described screw rod of described disc-shaped body, and the section radius of described extension part from the joint at the edge of described body towards dwindling gradually with the joint of described screw rod;
On described extension part, be provided with the first cutting muscle;
On the stage casing of described screw rod, be provided with the second cutting muscle, and described the second cutting muscle is spiral around described screw rod setting; Between the stage casing of described screw rod and the bit head of described screw rod tail end, be also provided with screw section, on described screw section, be circumferentially arranged with the screw thread of indentation along the surface of described screw rod;
Described screw rod is provided with contracting bar between the stage casing of described screw rod and described countersunk head nut, and the radius of described contracting bar is less than respectively the radius in the radius of described countersunk head nut and the stage casing of described screw rod;
Described bit head includes two interconnective blade parts, and two blade parts are formed with tip in both joints, two described blade parts centered by tip, radially be symmetricly set on most advanced and sophisticated both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112414.9U CN203879884U (en) | 2014-03-13 | 2014-03-13 | Wood screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112414.9U CN203879884U (en) | 2014-03-13 | 2014-03-13 | Wood screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879884U true CN203879884U (en) | 2014-10-15 |
Family
ID=51680384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112414.9U Expired - Fee Related CN203879884U (en) | 2014-03-13 | 2014-03-13 | Wood screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115530416A (en) * | 2022-10-27 | 2022-12-30 | 广东中烟工业有限责任公司 | Cutting screw |
-
2014
- 2014-03-13 CN CN201420112414.9U patent/CN203879884U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115530416A (en) * | 2022-10-27 | 2022-12-30 | 广东中烟工业有限责任公司 | Cutting screw |
| CN115530416B (en) * | 2022-10-27 | 2023-09-19 | 广东中烟工业有限责任公司 | Cutting screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3379092B1 (en) | Screw with cutting teeth | |
| CA2861647C (en) | Screw for composite/plastic materials | |
| US9970470B2 (en) | Flooring screw | |
| CN203879884U (en) | Wood screw | |
| GB2453164A (en) | Multiple spiral groove twist drill with leading screw point | |
| CN204610494U (en) | Turret wood screw | |
| CN202182094U (en) | Novel wood screw | |
| CN203509145U (en) | Drill bit for drilling countersunk head screw hole in HDI plate | |
| CN202317171U (en) | Triangular equilateral arc shank twist drill | |
| RU174706U1 (en) | NAGEL BAR | |
| CN205533651U (en) | Lead easy wood screw that changes of bits | |
| TWI640696B (en) | Wood screw | |
| CN202867481U (en) | Self-tapping self-locking wood screw spike | |
| EP2395251B1 (en) | Crack-proof screw | |
| CN207547707U (en) | A kind of efficient drill | |
| CN203051366U (en) | Fastening screw | |
| CN202082238U (en) | Self-tapping screw with guiding portion | |
| CN201265581Y (en) | Self-drilling screw | |
| CN207514045U (en) | A kind of fiber nail | |
| CN201687825U (en) | Self-drilling screw | |
| KR20100005204U (en) | screw | |
| TWI595160B (en) | Floor screws | |
| CN204312495U (en) | A kind of screw of wood furniture | |
| TWI744688B (en) | Self-tapping screws | |
| CN220706187U (en) | Hexagonal screw for steel structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20180313 |