CN205260551U - T -shaped bolt - Google Patents

Abstract

The utility model discloses a T -shaped bolt, including nut and screw rod, wherein: the fixed knot that the nut was kept away from to the screw rod one end was provided with the attended operation instrument constructs, the nut sets up to rectangular shape, the nut includes two right angles end and two fillets end, and through the aforesaid setting, fixed knot constructs can prevent that the bolt from rotating at fixing bolt under the effect of instrument to when the dismouting bolt, to avoid leading to the fact the circumstances of the damage of structure to take place because frictional force crosses that ambassador's nut drives that the bolt rotates or produced the gaff to nut installation position, the stability when having guaranteed the dismouting can, being provided with fillet end and can avoiding workman's fish tail when taking, also avoid causing to collide with to other structures waiting the damage, the right angle is held has great area of contact when the dismouting to reduce the effort that receives on the unit area, connected more stably, reduced the probability that the section bar warp.

Description

A kind of tommyhead bolt

Technical field

The utility model relates to a kind of securing member, and more particularly, it relates to a kind of tommyhead bolt.

Background technology

T-shaped bolt can directly be put into aluminium section bar groove, and in installation process, its energy automatic positioning lock is tight, and normal and flange nut is used in conjunction with, and is standard mating connector when corner fittings is installed.

Application number is that the Chinese patent of CN200520073025.0 discloses a kind of tommyhead bolt, it comprises head, screw rod and afterbody, in four angles of bolt head, having one or two is right angle, in the time that bolt head has two right angles, these two right angles lay respectively on two relative positions taking bolt head diagonal as symmetry axis; On tommyhead bolt, be also provided with T shape direction sign, although this tommyhead bolt can clearly be distinguished the locality of tommyhead bolt in T-slot, make to install and become easily, understand, improve installation effectiveness, but in installation process, too tight if bolts and nuts connect, when rotating nut, can drive bolt to rotate together, or drive the nut of bolt to produce excessive extruding force to installation site, cause the damage of structure.

Utility model content

The deficiency existing for prior art, the tommyhead bolt that provides a kind of dismounting stable is provided the purpose of this utility model.

For achieving the above object, the utility model provides following technical scheme: a kind of tommyhead bolt, comprise nut and screw rod, wherein: described screw rod is provided with the fixed structure of attended operation instrument away from one end of nut, described nut is set to strip, and described nut comprises two right angle ends and two rounded end.

By adopting technique scheme, fixed structure can prevent that bolt from rotating by set bolt under the effect of instrument, thereby in the time of assembling-disassembling bolt, avoid because frictional force is crossed ambassador's nut drive bolt rotation or nut installation position is produced to excessive stresses, cause the situation of the damage of structure to occur, the stability while having ensured dismounting; Being provided with rounded end can avoid workman to scratch in taking, also avoid other structures to cause the equivalent damage that collides with, right angle end has larger contact area in the time of dismounting, thereby has reduced active force suffered in unit are, connect more stablely, reduced the probability of section bar distortion.

The utility model is further set to: described right angle end and rounded end are all respectively with respect to the axle Central Symmetry of bolt.

By adopting technique scheme, average when the nut of axial symmetry design is stressed at nut two ends, make structure more stable, and attractive in appearance.

The utility model is further set to: described fixed structure is " one " font groove.

By adopting technique scheme, " one " font groove processing is easy, and the instrument ratio such as the screwdriver of " one " font is easier to obtain, thereby can easily be fixed dismounting to bolt.

The utility model is further set to: two right angle ends are pointed to respectively at described " one " font groove two ends.

By adopting technique scheme, obviously, in tommyhead bolt, two of nut part right angle catercorner lengths are the longest, in the time that the length direction of the right angle of tommyhead bolt diagonal and T-slot is vertical, clamping length between tommyhead bolt and T-slot is the longest, connect the most stable, and the direction of " one " font groove is identical with this right angle diagonal, with respect to prior art, by " one " font groove can draw more intuitively the originally cornerwise direction in right angle in invisible mode, set up another installation more accurate, easy.

The utility model is further set to: the width of described nut is identical with the diameter of screw rod.

By adopting technique scheme, bolt is ensureing that the stable connection of screw rod reduces the use of material simultaneously as much as possible, and the entirety of screw rod can be connected to nut place, has ensured the solid and reliable of bolt arrangement.

The utility model is further set to: described rounded end radius be the half of nut width.

By adopting technique scheme, rounded end and right angle end account for respectively the half of nut width, thereby have ensured the stable of structure, and half being designed beautifully property of fillet is also better.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the top view of the utility model embodiment.

Brief description of the drawings: 1. nut; 11. right angle ends; 12. rounded end; 2. screw rod; 3. fixed structure.

Detailed description of the invention

Referring to accompanying drawing, the utility model is described in further detail.

A kind of tommyhead bolt, comprise nut 1 and screw rod 2, wherein: described screw rod 2 is provided with the fixed structure 3 of attended operation instrument away from one end of nut 1, described nut 1 is set to strip, described nut 1 comprises two right angle ends 11 and two rounded end 12, and described right angle end 11 and rounded end 12 are all respectively with respect to the axle Central Symmetry of bolt; " one " font groove that described fixed structure 3 is 2mm for the degree of depth; Two right angle ends 11 are pointed to respectively at described " one " font groove two ends; The width of described nut 1 is identical with the diameter of screw rod 2; Described rounded end 12 radius be the half of nut 1 width.

Principle of the present utility model is: fixed structure 3 can prevent that bolt from rotating by set bolt under the effect of instrument, thereby in the time of assembling-disassembling bolt, avoid because frictional force is crossed ambassador's nut drive bolt rotation or nut 1 installation position is produced to excessive stresses, cause the situation of the damage of structure to occur, the stability while having ensured dismounting; Being provided with rounded end 12 can avoid workman to scratch in taking, also avoid other structures to cause the equivalent damage that collides with, right angle end 11 has larger contact area in the time of dismounting, thereby has reduced active force suffered in unit are, connect more stablely, reduced the probability of section bar distortion; " one " font groove processing is easy, and the instrument ratio such as the screwdriver of " one " font is easier to obtain, thereby can easily be fixed dismounting to bolt; In tommyhead bolt, two right angle catercorner lengths of nut 1 part are the longest, in the time that the length direction of the right angle of tommyhead bolt end linea angulata and T-slot is vertical, clamping length between tommyhead bolt and T-slot is the longest, connect the most stable, and the direction of " one " font groove is identical with this right angle diagonal, with respect to prior art, by " one " font groove can draw more intuitively the originally cornerwise direction in right angle in invisible mode, set up another installation more accurate, easy; Bolt is ensureing that the stable connection of screw rod 2 reduces the use of material simultaneously as much as possible, and the entirety of screw rod 2 can be connected to nut 1 place, has ensured the solid and reliable of bolt arrangement; Rounded end 12 accounts for respectively the half of nut 1 width with right angle end 11, thereby has ensured the stable of structure, and the half fillet performance that is designed beautifully is also better.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical 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 (6)

1. a tommyhead bolt, comprise nut (1) and screw rod (2), it is characterized in that: described screw rod (2) is provided with the fixed structure (3) of attended operation instrument away from one end of nut (1), described nut (1) is set to strip, and described nut (1) comprises two right angle ends (11) and two rounded end (12).

2. a kind of tommyhead bolt according to claim 1, is characterized in that: described right angle end (11) and rounded end (12) are all respectively with respect to the axle Central Symmetry of bolt.

3. a kind of tommyhead bolt according to claim 1, is characterized in that: described fixed structure (3) is " one " font groove.

4. a kind of tommyhead bolt according to claim 3, is characterized in that: two right angle ends (11) are pointed to respectively at described " one " font groove two ends.

5. a kind of tommyhead bolt according to claim 1, is characterized in that: the width of described nut (1) is identical with the diameter of screw rod (2).

6. a kind of tommyhead bolt according to claim 1, is characterized in that: the radius of described rounded end (12) is the half of nut (1) width.