CN2319613Y

CN2319613Y - High effective expansive screw

Info

Publication number: CN2319613Y
Application number: CN 96241244
Authority: CN
Inventors: 吴明欣
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-05
Filing date: 1996-11-05
Publication date: 1999-05-19
Anticipated expiration: 2006-11-05

Abstract

The utility model relates to a high-efficiency expansion screw which is composed of a screw rod, a screw nut, a front fork sleeve, supporting conical rings and a rear fork sleeve, wherein the screw rod sequentially passes through the front fork sleeve, the supporting conical rings, the rear fork sleeve and the screw nut. The front section of the front fork sleeve is bunted with a gasket of a screw head. The rear section of the front fork sleeve and the front section of the rear fork sleeve are provided with two corresponding insertion grooves. The supporting conical rings between the front fork sleeve and the rear fork sleeve are respectively clamped into the two corresponding insertion grooves of the front fork sleeve and the rear fork sleeve by a convex block. When the utility model is integrally embedded into a wall hole, the sleeve walls of the front fork sleeve and the rear fork sleeve are correspondingly expanded through the corresponding rotation of the screw rod and the screw nut.

Description

Efficient setscrew

The utility model relates to a kind of efficient setscrew, belongs to a kind of suspension and connection member.

Existing setscrew as shown in Figure 1, is made of screw rod 10, sleeve 20, nut 30 and packing ring 40, sleeve 20 tail ends are provided with several fluting 201, push and the spalling distortion in order to contract in the head end 101 that cooperates screw rod 10, and setscrew is positioned in the cinclides, but this setscrew, when sleeve 20 is squeezed, can only unidirectionally expand, the expansion amplitude is less, during as the soft cinclides of hollow brick or soil property, then fixed effect is poor, even can become flexible and be drawn out of, so use inconvenience.

The purpose of this utility model is that a kind of efficient setscrew will be provided, and its good fixing effect is difficult for loosening, solid and reliable.

The purpose of this utility model is achieved in that efficient setscrew, by screw rod, nut, front fork sleeve, prop up conical ring and the back vent sleeve constitutes, screw rod passes front fork sleeve in proper order, prop up conical ring, back vent sleeve and nut, after the whole group of this device is implanted cinclides, borrow nut and back vent sleeve tabling structure, and the relatively rotating of screw rod and nut, make in the back vent sleeve by propping up snapping in and jacking of conical ring, form the reverse spalling opposite with the screw rod direction of advance, then prop up conical ring and snap in front fork sleeve with projection again, make it become reverse spalling, this two-way spalling on screw rod can guarantee that setscrew firmly implants in the cinclides.

Advantage of the present utility model: 1, because of the utility model in use, rotating screw bolt, make prop up conical ring with projection in former and later two directions head into front fork sleeve and back vent sleeve, cause two-way spalling, closely be connected good fixing effect around making screw rod and cinclides.

2, dark or when meeting the soft cinclides of hollow brick, soil property in setscrew is locked the hole, can on screw rod, wear sleeve, sleeve and front and back member fasten, and this can make the screw expansion place walk around the section that need not expand and suitably increase fixed effect.

But 3, because of the utility model in all spallings of positive and negative both direction, screw rod also can inverse direction run through each member successively, at this moment nut exposes and is placed on the screw rod, the suspention locking that is particularly suitable for object is used.

The utility model concrete structure is provided by following examples and accompanying drawing thereof:

Fig. 1 is existing setscrew three-dimensional exploded view;

Fig. 2 is the utility model embodiment one three-dimensional exploded view;

Fig. 3 is a stereogram before not expanding after the utility model embodiment one combination;

Fig. 4 is the back stereogram that expanded after the utility model embodiment one combination;

Fig. 5 is the utility model embodiment two three-dimensional exploded views;

Fig. 6 is the stereogram of the opposite direction of back vent sleeve among the utility model embodiment two when placing;

Fig. 7 is the utility model embodiment three, and screw rod oppositely runs through the parts three-dimensional exploded view;

Fig. 8 is the utility model embodiment four, the three-dimensional exploded view that the spiral shell head combines with the back vent sleeve;

Fig. 9 is the utility model embodiment five, sets up the three-dimensional exploded view of a two-way sleeve and a serial connection sleeve in embodiment two screw rod;

Figure 10 is the utility model embodiment six, sets up the three-dimensional exploded view of two serial connection sleeves in embodiment four;

Figure 11 is the utility model embodiment seven, the three-dimensional exploded view when setting up a two-way sleeve and a serial connection sleeve in Figure 10 of embodiment six;

Figure 12 is the stereogram when expanding after the combination of Figure 11;

Figure 13 is that the utility model is applied to the back sectional drawing that expands in the hollow brick cinclides;

Describe in detail below in conjunction with accompanying drawing.

The utility model embodiment one, as Fig. 2,3,4, efficient setscrew by screw rod 1, nut 2, front fork sleeve 3, prop up conical ring 4 and back vent sleeve 5 is constituted, is characterized in that:

Screw rod 1, one end is provided with can be for the sealed spiral shell head 11 of rotation, and screw rod is provided with screw thread 12;

Nut 2 is hexagon, and itself and back vent sleeve tabling structure are on the end face of spiral shell head 11, are provided with two corresponding protruding keys 21;

Front fork sleeve 3 is placed on the screw rod 1, at the barrel leading portion, is provided with two corresponding fins 31 towards rear-inclined, and fin 31 withstands on the packing ring of spiral shell head 11 1 sides, at the barrel back segment, has the embedding ditch 32 of two correspondences, on the outer wall of embedding ditch 32, is provided with interlock burr 33;

Propping up conical ring 4, is a truncated cone shape sleeve, is enclosed within on the screw rod of front fork sleeve 3 back, on the wall of sleeve, is provided with and stretches out forward and two corresponding projections 41, and projection 41 embeds in the embedding ditch 32 of front fork sleeve 3, and projection 41 extends on the whole conical ring ring wall;

Back vent sleeve 5, it is a barrel leading portion, be provided with the cylinder of two corresponding embedding ditches 51, be placed on the end of screw rod 1, prop up the projection 41 of conical ring 4, its back segment embeds in the embedding ditch 51, the outer wall of embedding ditch 51 is provided with the burr 52 of interlock, on the end face of barrel rear end, be provided with two corresponding groove 53, two corresponding protruding keys 21 of nut 2 embed in the groove 53.When putting in order the group setscrew after implanting cinclides, rotate spiral shell head 11, because of nut 2 has snapped in the back vent sleeve 5, pin motionless, so screw rod 1 can not dally, must make 5 reaches of back vent sleeve, by prop up getting into and the into direction spalling of driving in the wrong direction of conical ring 4 in advance, prop up then conical ring 4 again jacking front fork sleeve 3 make front fork sleeve 3 be forward spalling, utilize this two-way spalling on screw rod, reach very stable expansion fixed effect, as shown in figure 13.

The utility model embodiment two, shown in Fig. 5,6, described back vent sleeve 5 is not established groove 53 and is formed sleeve 5A, and nut 2 is not established protruding key 21 and formed nut 2A, nut 2 is that nut 2A embeds in the containing groove 54A at the containing groove 54A of the terminal formation of sleeve 5A one nut 2A with back vent sleeve 5 tabling structures.The terminal containing groove 54A that forms a nut 2A of the sleeve of back vent described in Fig. 5 5A constitutes by offering dissected valley 541A at the end of back vent sleeve 5A.Like this, nut 2A just can snap in the containing groove 54A, omit the protruding key 21 of nut 2 among the embodiment one, reach the purpose of same locking, because of offering grooving 541A at perisporium, make this containing groove 54A just snap in the location, thereby reduce the required wall thickness of back vent sleeve 5A, to save materials for the nut that specification conforms to.

The utility model embodiment three as shown in Figure 7, be that described screw rod 1 can run through front fork sleeve 3 with reverse order, prop up conical ring 4 and back vent sleeve 5, the spiral shell head 11 of this seasonal screw rod 1 is imbedded the nut containing groove of back vent sleeve 5A, or shown in Figure 8 as embodiment four, establish protruding key 55A at spiral shell head 11 inner faces, to fasten with the corresponding embedding ditch 51 of back vent sleeve 5; At this moment nut 2A exposes, and is placed on the screw rod 1, and thread section 12 also stretches out outside the cinclides, and this setscrew is particularly suitable for providing the suspention locking of object to use (installation of bathing washbasin as the toilet).

The utility model embodiment five as shown in Figure 9, promptly between described embodiment's one front fork sleeve 3 and back vent sleeve 5 or 5A, set up a two-way sleeve 6, respectively establish one at the two ends of two-way sleeve 6 and prop up conical ring 4, the front and back of two-way sleeve 6 are equipped with a pair of embedding ditch 61 for two sections, embedding ditch 61 outer walls are provided with interlock burr 62, embedding ditch 61 fastens with the projection 41 that props up conical ring 4, borrow being nested with of two-way sleeve 6, make when expanding at rotating screw bolt, then two-way sleeve 6 can contact forward and backward

sleeve

3,5 respectively and produce the point of deciding of two two-way expansions, obtains better expansion effect.

The utility model embodiment six as shown in figure 10, be on screw rod, to set up the separate parts serial connection sleeve 7 of usefulness at interval, on the front/rear end of serial connection sleeve 7, be respectively equipped with corresponding groove 71 and protruding key 72, between serial connection sleeve 7 itself, fasten with groove 71 and protruding key 72, corresponding, on the leading portion end face of front fork sleeve 3, be provided with a pair of corresponding grooves 34, groove 34 matches with protruding key 72, screw rod 1 is run through and is serially connected with front fork sleeve 3 or the rear and front end of back vent sleeve 5, increase span, to satisfy actual demand.

The utility model embodiment seven is a three-dimensional exploded view of setting up a two-way sleeve and a serial connection sleeve in Figure 10 of embodiment six as shown in figure 11;

Figure 13 is that the utility model is applied to the back sectional drawing that expands in the hollow brick cinclides, as seen from the figure, because two-way expansion makes setscrew more firmly be fixed in the cinclides significantly.

In addition, in the embedding ditch 32 and 51 of described front fork sleeve 3 and back vent sleeve 5 or 5A, be respectively equipped with the thin rib 321 and 511 that prevents that the mistake lock from causing unnecessary spalling to use.As shown in Figure 2, in the embedding ditch 61 of described two-way sleeve 6, be provided with the thin rib 611 that prevents that the mistake lock from causing unnecessary spalling to use.As shown in Figure 9, this just preserves to the utility model and uses, and has created condition more easily.

Claims

1, efficient setscrew by screw rod (1), nut (2), front fork sleeve (3), prop up conical ring (4) and back vent sleeve (5) formation, is characterized in that:

Screw rod (1), an end are provided with can be for the sealed spiral shell head (11) of rotation, and screw rod is provided with screw thread (12);

Nut (2) is hexagon, and between back vent sleeve (5) with the embedded structure tabling;

Front fork sleeve (3) is placed on the screw rod (1), at the barrel leading portion, be provided with two corresponding fins (31) towards rear-inclined, fin (31) withstands on the packing ring of spiral shell head (11) one sides, at the barrel back segment, embedding ditch (32) with two correspondences on the outer wall of embedding ditch (32), is provided with interlock burr (33);

Propping up conical ring (4), is a truncated cone shape sleeve, is enclosed within on the screw rod of front fork sleeve 3 back, on the wall of sleeve, do not stretch out forward and two corresponding projections (41), projection (41) embeds in the embedding ditch (32) of front fork sleeve (3), and projection (41) extends on the whole conical ring ring wall;

Back vent sleeve (5), it is a barrel leading portion, be provided with the cylinder of two corresponding embedding ditches (51), be placed on the end of screw rod (1), prop up the projection (41) of conical ring (4), its back segment embeds in embedding ditch (51), and the outer wall of embedding ditch (51) is provided with the burr (52) of interlock, between barrel rear end and nut (2) with the embedded structure tabling.

2, by the described efficient setscrew of claim 1, it is characterized in that: described nut (2) is on the end face of sleeve and barrel rear end with back vent sleeve (5) tabling structure, be provided with two corresponding groove (53), nut (2) is provided with two corresponding protruding keys (21) on the end face of spiral shell head (11).

3, by the described efficient setscrew of claim 1, it is characterized in that: described nut (2) and back vent sleeve (5) tabling structure, be that nut (2A) embeds in the containing groove (54A) at the terminal containing groove (54A) that forms a nut (2A) of sleeve (5A).

4, by the described efficient setscrew of claim 3, it is characterized in that: the terminal containing groove (54A) that forms a nut (2A) of described back vent sleeve (5A) constitutes by offer dissected valley (541A) at the end of back vent sleeve (5A).

5, by claim 1 or 2 or 3 described efficient setscrews, it is characterized in that: described front fork sleeve (3) and back vent sleeve (5) or (5A) between, set up a two-way sleeve (6), respectively establish one at the two ends of two-way sleeve (6) and prop up conical ring (4), the front and back of two-way sleeve (6) are equipped with a pair of embedding ditch (61) for two sections, embedding ditch (61) outer wall is provided with interlock burr (62), and embedding ditch (61) fastens with the projection (41) that props up conical ring (4).

6, by claim 1 or 2 or 3 described efficient setscrews, it is characterized in that: on screw rod, set up the separate parts serial connection sleeve (7) of usefulness at interval, on the front/rear end of serial connection sleeve (7), be respectively equipped with corresponding groove (71) and protruding key (72), between serial connection sleeve (7) itself, fasten with groove (71) and protruding key (72), corresponding, on the leading portion end face of front fork sleeve (3), be provided with a pair of corresponding grooves (34), groove (34) matches with protruding key (72).

7, by claim 1 or 2 or 3 described efficient setscrews, it is characterized in that: in described front fork sleeve (3) and back vent sleeve (5) or (5A) the embedding ditch (32) and (51), be respectively equipped with the thin rib (321) and (511) that prevent that the mistake lock from causing unnecessary spalling to use.

8, by claim 1 or 2 or 3 described efficient setscrews, it is characterized in that: in the embedding ditch (61) of described two-way sleeve (6), be provided with the thin rib (611) that prevents that the mistake lock from causing unnecessary spalling to use.