CN201121634Y - Combined screw - Google Patents

Abstract

The utility model discloses a combination typed screw, including a screw (1) and a connecting rod (2); wherein, one end of the connecting rod (2) is fixedly provided with a head (3) which can be positioned by a wrench or a screwdriver further rotates the connecting rod (2); the connecting rod (2) is internally provided with an axial screw thread hole (4); the screw (1) is revolved in the axial screw thread hole (4); one or two gaskets (51, 52) are fixed on the connecting rod (2) which is between a screw head (6) of the screw (1) and the head (3). The combination typed screw has the advantages that the screw not only has the performance of firmly connecting with a rivet, but also can be dismounted from a connecting piece.

Description

SEM screw SEM Scr

Technical field:

The utility model relates to a kind of fastening piece that is used for mechanical connection, specifically is a kind of SEM screw SEM Scr.

Background technique:

In mechanical industry, the usage of rivet is after the end with rivet passes the unthreaded hole of two connected pieces, to carry out punching press by special punching equipment again, thereby two connected pieces are linked together.Though use rivet to connect firmly, because rivet is rivetted through one end after the punching press, therefore connected in the future two connected pieces can not be dismantled again, and this has brought inconvenience for the running repairs of later connected piece.

The model utility content:

The technical problems to be solved in the utility model is, provides a kind of and not only has the performance that rivet is connected firmly, and the SEM screw SEM Scr that in the future can dismantle from connected piece.

Technical solution of the present utility model is, a kind of combined bolt with following structure is provided, and it comprises a screw and a connecting rod; One end of described connecting rod is fixed with the head of an available spanner or screw-driver location and then rotatable connecting rod, is provided with the axial screw thread hole in the described connecting rod; Described screw screws in described axial screw thread hole; Be fixed with one or two pad on the screw terminal of described screw and the connecting rod between the head.

After adopting above structure, compared with prior art, the utlity model has following advantage: being used of screw and connecting rod makes the utility model not only have the performance that rivet is connected firmly, and because screw is to screw in the tapped hole of connecting rod, therefore the utility model can screw out screw in tapped hole, realized the detachability of connected piece, in the future maintenance has brought convenience.In addition, pad the surface of contact that has increased the utility model and connected piece is set, the pressure that makes the screw terminal of screw and be fixed on the head of connecting rod can be distributed on the surface of contact of connected piece more equably, thereby has further improved the soundness that connects.

An above-mentioned pad or two spacers refer on connecting rod, be provided with two or more grooves near the screw terminal place or near described head place on the external peripheral surface of described connecting rod, be respectively equipped with two or more on the inner circumference limit of described pad and may be stuck in the interior projection of groove.

The head of above-mentioned available spanner or screw-driver location and then rotatable connecting rod can be outer-hexagonal shape, and also can have straight groove on the head of outer-hexagonal shape of the present utility model.

Description of drawings:

Fig. 1 is a broken section structural representation of the present utility model.

Fig. 2 is the left TV structure schematic representation of Fig. 1.

Fig. 3 is the structural representation of the utility model Intermediate gasket.

Fig. 4 is for removing the broken section structural representation behind the pad among Fig. 1.

Embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

As Fig. 1, Fig. 3 and shown in Figure 4, the utility model comprises a screw 1 and a connecting rod 2; One end of described connecting rod 2 is fixed with the head 3 of an available spanner or screw-driver location and then rotatable connecting rod 2, is provided with axial screw thread hole 4 in the described connecting rod 2; Described screw 1 screws in described axial screw thread hole 4; Be fixed with a pad or two pads 51,52 on the screw terminal 6 of described screw 1 and the connecting rod 2 between the described head 3; A described pad or two pads 51,52 are fixed on the connecting rod 2 and refer to, be provided with two or more grooves 7 near screw terminal 6 places or near described head 3 places on the external peripheral surface of described connecting rod 2, be respectively equipped with two or more on the inner circumference limit of described pad 51,52 and may be stuck in projection 8 in the groove 7.In other words, the utility model can only be fixed a pad 51 near screw terminal 6 places on the external peripheral surface of described connecting rod 2, also can only on the external peripheral surface of described connecting rod 2, fix a pad 52 near described head 3 places, also can be simultaneously on the external peripheral surface of described connecting rod 2 near described head 3 places with near screw terminal 6 places retaining washer 52,51 simultaneously, the utility model is preferably retaining washer 51 and 52 simultaneously.Screw 1 is the outer-hexagonal shape screw of industry routine, outer-hexagonal shape screw, band straight groove or the cross recessed screw etc. of band counterbore in the utility model.In addition, the length of tapped hole 4 can equal the length of the threaded stem of screw 1 in the utility model, also can be greater than the length of the threaded stem of screw 1.

As shown in Figure 2, the head 3 of location of available spanner or screw-driver described in the utility model and then rotatable connecting rod 2 is an outer-hexagonal shape, can have straight groove 9 on the head 3 of outer-hexagonal shape.

Certainly, head 3 described in the utility model is not limited to be provided with straight groove 9, and it also can be a cross recess, and interior hexagonal counterbore etc. also can be set in the above, and these variations all fall into protection domain of the present utility model.

Claims (4)

1, a kind of SEM screw SEM Scr comprises screw (1), it is characterized in that: it also comprises a connecting rod (2); One end of described connecting rod (2) is fixed with the head (3) of an available spanner or screw-driver location and then rotatable connecting rod (2), is provided with axial screw thread hole (4) in the described connecting rod (2); Described screw (1) screws in described axial screw thread hole (4); Be fixed with a pad or two pads (51,52) on the screw terminal (6) of described screw (1) and the connecting rod (2) between the described head (3).

2, SEM screw SEM Scr according to claim 1, it is characterized in that: a described pad or two pads (51,52) are fixed on connecting rod (2) and upward refer to, locate near screw terminal (6) on the external peripheral surface of described connecting rod (2) or locate to be provided with two or more grooves (7) near described head (3), be respectively equipped with two or more on the inner circumference limit of described pad (51,52) and may be stuck in projection (8) in the groove (7).

3, SEM screw SEM Scr according to claim 1 is characterized in that: the head (3) of described available spanner or screw-driver location and then rotatable connecting rod (2) is an outer-hexagonal shape.

4, SEM screw SEM Scr according to claim 3 is characterized in that: have straight groove (9) on the head of described outer-hexagonal shape (3).

Images