CN2050900U

CN2050900U - Head changing bolt

Info

Publication number: CN2050900U
Application number: CN 89203818
Authority: CN
Inventors: 唐成华
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-30
Filing date: 1989-03-30
Publication date: 1990-01-10

Abstract

The utility model relates to a head changing bolt for connecting objects, which is characterized in that a movable head (2) is inserted into a jack of a screw rod (1) and is connected by a shaft pin (3), and then the movable head (2) can rotate in a plane which uses the shaft center of the shaft pin (3) as a center under the function of additional torsional force. Thereby, a deformable bolt head is formed. A part (4) for controlling the rotation of the movable head (2) enables the movable head (2) to automatically recover and retain the rest position of the movable head (2) when the movable head (2) is not subjected to the function of the additional torsional force. Thus, the bolt head is automatically recovered and retained in a T shape. The utility model can easily connect objects on the clipping wall of some face of an interlayer where hands can not enter.

Description

Head changing bolt

The utility model is the change hook bolt that is used for connecting object about a kind of.

At present, the bolt that is used for connecting object all has a common shortcoming, be that bolt head can not be from dynamic deformation, thereby cause and on certain double wall of the inaccessiable interlayer of staff (particularly by the formed interlayer of nonmetal brittle material), connect very difficulty of object.

In view of the problem that above-mentioned bolt exists, the purpose of this utility model is a kind of simple in structure, easy to operate change hook bolt that is applicable to connection object on certain double wall of interlayer of design.

The utility model is to realize like this, at one by screw rod (1), live (2), pivot pin (3), the part (4) that control head alive (2) rotates, in the change hook bolt that packing ring (5) and nut (6) are formed, the head (2) of living is inserted the socket of screw rod (1), after with pivot pin (3) their being connected, the head (2) of living rotates in the plane that under the effect that adds rotatory force can be the center in the axle center with pivot pin (3), thereby form a deformable bolt head, make the head (2) of living recover and remain its position of rest with live part (4) that head (2) rotates of control, bolt head is recovered and remain T-shaped in the time spent of doing that is not subjected to adding rotatory force.The part (4) that control head alive (2) rotates can be a torsion spring, and it is enclosed within on the pivot pin (3), and its two reverse lever arm difference clasp joint at the socket side of screw rod (1) and the end face of head alive (2).The part (4) that control head alive (2) rotates can be an extension spring, and its two ends are cut with scissors knot respectively in the bottom surface of head (2) and the socket bottom surface of screw rod (1) of living, and cuts with scissors the knot place near the bolt side.People just can rotate the head (2) of living like this, make bolt head become straight peen, meanwhile torsion spring or extension spring will produce warping stress or tensile stress, adding after the rotatory force disappearance on acting on the head (2) of living, torsion spring or extension spring produced gives stress and will make the head (2) of living rotate and revert to its position of rest, just make bolt head revert to T-shaped, so just reached the purpose of bolt head from dynamic deformation.The tail end of screw rod (1) can be square.The tail end of screw rod (1) also can be a hook-type.This just make people can be under the situation of not touching bolt head fastening nut (6).

The utility model is owing to adopted deformable bolt head, people can rotate the head (2) of living, bolt head is become after the straight peen, it is penetrated in the hole, garden that the brill diameter with screw rod (1) well is identical on the double wall of coupled object and interlayer in advance, when whole bolt head enters interbedded space, the part (4) that control head alive (2) rotates will make the head (2) of living rotate and revert to its position of rest, just bolt head is become T-shaped by straight peen.Because the tail end of screw rod (1) is square or hook-type, people just can be at the single side face fastening nut (6) of double wall.People just can put on bolt and be connected object on certain double wall of the inaccessiable interlayer of staff (particularly by the formed interlayer of nonmetal brittle material) easily like this.

Be described in detail below in conjunction with 1 to 9 pair of the utility model of accompanying drawing.

Accompanying drawing 1, the change hook bolt front view of part (4) when being torsion spring that control head alive (2) rotates.1-screw rod wherein, the 2-head of living, the 3-pivot pin, the 4-torsion spring, the 5-packing ring, the 6-nut, the tail end of 7-screw rod (1) is square, the live end face of head (2) of the socket side of 8-screw rod (1), 9-, the 10-torsion spring reverse lever arm clasp joint place.

Accompanying drawing 2, the change hook bolt positive view of part (4) when being extension spring that control head alive (2) rotates.Wherein 1,2,3,5,6 is identical with accompanying drawing 1 with location number with Part No. shown in 7,4-extension spring, the bottom surface of 11-head alive (2), the socket bottom surface of 12-screw rod (1), 13-bolt side.

Accompanying drawing 3, the change hook bolt head left side view of part (4) when being torsion spring that control head alive (2) rotates, its each Part No. is identical with accompanying drawing 1 with location number.

Accompanying drawing 4, the change hook bolt head right side view of part (4) when being extension spring that control head alive (2) rotates, its each Part No. is identical with accompanying drawing 2 with location number.

Accompanying drawing 5, the A-A sectional view, its each Part No. is identical with accompanying drawing 1 with location number.

Accompanying drawing 6, the B-B sectional view, its each Part No. is identical with accompanying drawing 2.

Accompanying drawing 7, the tail end of screw rod (1) is the front view of hook-type.1-screw rod wherein, the tail end of 7-screw rod (1) is a hook-type.

Accompanying drawing 8, the embodiment when a change spiral shell stretches into interlayer.Wherein Part No. shown in 1,2,3,5,6 and 7,10 is identical with accompanying drawing 1 with location number, the double wall of 14-interlayer, the coupled object of 15-.

Accompanying drawing 9 becomes hook bolt in running order embodiment on the double wall of interlayer, and its each Part No. is identical with accompanying drawing 8 with location number.

By accompanying drawing 1, accompanying drawing 2 as can be known, the head (2) of living will rotate under the effect that adds rotatory force, make the bolt head distortion, torsion spring or extension spring will produce warping stress or tensile stress simultaneously, in case act on adding after the rotatory force disappearance on the head (2) of living, torsion spring or extension spring produced gives stress and will make the head (2) of living rotate and revert to its position of rest, even bolt head reverts to T-shaped.

By accompanying drawing 5, accompanying drawing 7 as can be known, the tail end of screw rod (1) is square or hook-type, and people just can be under the situation of not touching bolt head like this, fastening nut (6).

As accompanying drawing 8, shown in the accompanying drawing 9, people are if will connect object on certain double wall of the inaccessiable interlayer of staff (particularly by the formed interlayer of nonmetal brittle material), only with hand rotates the head (2) of living, after making bolt head become straight peen, it is penetrated in advance in the coupled object garden hole identical with the brill diameter with screw rod (1) well on the double wall, bolt head is stretched in the interlayer, after whole bolt head enters interbedded space, reversing bullet will make the head (2) of living rotate and revert to its position of rest, bolt head is become T-shaped by straight peen, clamp the square tail end of nut (6) and screw rod (1) then respectively with spanner, and fastening nut (6), so just reached enforcement purpose of the present utility model.

Claims

1, a kind of change hook bolt, has screw rod (1), live (2), pivot pin (3), the part (4) that control head alive (2) rotates, packing ring (5) and nut (6), it is characterized in that the head (2) of living is inserted the socket of screw rod (1), after with pivot pin (3) their being connected, live head (2) under the effect that adds rotatory force, can be to rotate in the plane at center in axle center with pivot pin (3), thereby form a deformable bolt head, make the head (2) of living recover and remain its position of rest with live part (4) that head (2) rotates of control, bolt head is recovered and remain T-shaped in the time spent of doing that is not subjected to adding rotatory force.

2, according to the change hook bolt of claim 1, it is characterized in that controlling a part (4) that (2) alive rotates is a torsion spring, it is enclosed within on the pivot pin (3), and its two reverse lever arm difference clasp joint at the socket side of screw rod (1) and the end face of the head (2) of living.

3, according to the change hook bolt of claim 1, it is characterized in that controlling a part (4) that (2) alive rotates is an extension spring, its two ends are cut with scissors knot respectively in the bottom surface of head (2) and the socket bottom surface of screw rod (1) of living, and cut with scissors the close bolt side in knot place.

4, according to claim 2,3 described change hook bolts, it is characterized in that the tail end of screw rod (1) is square.

5, according to claim 2,3 described change hook bolts, it is characterized in that the tail end of screw rod (1) is a hook-type.