CN201391523Y

CN201391523Y - Double end stud connecting piece locked by sheathed bolt nut

Info

Publication number: CN201391523Y
Application number: CN200920080286U
Authority: CN
Inventors: 张昌华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-20
Filing date: 2009-04-20
Publication date: 2010-01-27
Anticipated expiration: 2019-04-20

Abstract

The utility model discloses a double end stud connecting piece locked by a sheathed bolt nut. In the connecting piece, threaded columns of the double end stud are both provided with a locked groove evenly; the periphery of the outer wall body of the nut is jogged with a nut sleeve; the wall body of the nut is internally provided with a locking mouth by which the inner and the outer wall communicate and the locking mouth is provided with a compression spring and a bolt inside; when the nut is screwed and rotated on the threaded column, the bolt is pushed against and withdraws back to the locking mouth; when the nut is screwed tightly on the threaded column, the nut is combined with the locked groove as the bolt is pushed against out of the locking mouth by the compression spring, thus causing the nut to be unable of loosening on the threaded column. When applied to the connection of parts of mechanical power, the double end stud connecting piece does not cause the nut to loosen and fall off due to the long-time vibration of mechanical power. However, if the nut needs to be loosened, only the nut sleeve needs to be pulled down to withdraw the compression spring and the bolt. The double end stud connecting piece is applicable as a connecting piece of dextral or levogyrate connection.

Description

Stud link with the suit bolt nut lock

Technical field

The utility model relates to a kind of stud link, and specifically, the utility model is a kind of stud link with the suit bolt nut lock.

Background technique

Be connected with nut, packing ring on the screw column at two of known stud link.In stud connected, though nut is twisted very tightly, in the mechanokinetic motion, because long-term vibration is jolted, nut also can become flexible even come off, and then causes the loose or dislocation of component of machine, or leads to a disaster, and jeopardizes safety.So, coming off in order to prevent nut loosening, people usually adopt spring washer or with two overlapping nuts, or are locked with cotter pin and slotted nut.But in the link of most stud, even adopt spring washer sometimes or with two overlapping nuts, in long-term vibration of mechanical power, nut also can become flexible even come off.

The model utility content

Technical problem to be solved in the utility model is, provide a kind of can be in long-term vibration of mechanical power can loose or dislocation the stud link.

The utility model is achieved by following technical proposals, is provided with locked groove on the screw column at stud two.And the column cap at stud two is arranged to conical conehead.Around the outer wall of nut, be set with the nut sleeve that is provided with according to the nut outer wall shape, and on the inner wall of nut sleeve, be relatively set with firmly groove; The outer wall of nut is provided with according to the firmly supporting chimeric stressed projection of groove shapes on the nut sleeve inner wall.In the wall body of nut, also be provided with the through fore shaft of inside and outside wall, in fore shaft, be provided with pressure spring, the dead bolt of adjacent pressure spring.Dead bolt combines with locked groove after being supported out fore shaft by the thrust of pressure spring, thereby with nut and stud locking.

In technique scheme, described locked groove is the retaining groove that is upright wall body from top to bottom of long strip.Locked groove on the described screw column that is arranged on stud two is that retaining groove oppositely is set mutually.And can on screw column, be provided with relative two respectively according to the fastening degree of stud link needs, three minutes three or criss-cross four locked grooves dwindle the rotary distance of dead bolt and locked groove, thereby reach more fastening purpose.And, being provided with at the center of each side's body of nut sleeve can be for grabbing the pawl eye that pulls, when needs loose or dislocation lower nut, should be earlier with small-sized separated type hydraulic pressure device for drawing die, be commonly called as three-jaw, grab on the pawl eye on the nut sleeve body, pull nut sleeve, withdraw from pressure spring and dead bolt, nut like this can get loose.Therefore, such setting not only can fastening stud link, and can prevent being disassembled easily of component of machine.That is to say that the design also has antitheft effect.

In technique scheme, described fore shaft is the square mouth, and the wall of its mouthful is to be shrunk to the rectangular body mouth by outer wall gradually to the inwall oral area.Described dead bolt is a cuboid that is tiltedly shunk in gradually to the lip of the tongue by root of the tongue portion, the rectangular body of its dead bolt is less than the rectangle hole of fore shaft, so dead bolt can freely stretch in fore shaft, and, because the root of the tongue portion of dead bolt is greater than the mouth limit portion of fore shaft, like this, dead bolt just can not be compressed spring and firmly support out outside the fore shaft, the lip of the tongue of dead bolt then is the internal thread round mouth setting according to nut, and the lip of the tongue of dead bolt is supported in the withdrawal fore shaft by screw column easily.

In said structure spare, pressure spring is a cylindrical helical spring, nut is hexagonal then, also four jiaos.

Owing to adopted technique scheme, make in the connection of stud, in the wall body of nut, be provided with pressure spring and dead bolt, on screw column, be provided with locked groove, make dead bolt combine with locked groove down firmly offseting of pressure spring, the tongue limit is blocked by the trough rim of locked groove, thereby nut can't be become flexible on screw column, just can not cause the loosening of link.And chimeric on the outer wall of nut have a nut sleeve, and as not using device for drawing die, tightly chimeric nut sleeve then can't get loose down.Therefore, this stud connects on the stud link that is more suitable for using connection in the open air or does not often dismantle.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the plan view of the utility model with the stud link of suit bolt nut lock.Connect with the nut of a column cap among the figure and represent two Placements that column cap is identical.Dotted portion is expressed as the invisible component thing that is arranged in the nut body among the figure.

Fig. 2 is the plan view of cover nut in the utility model.Dotted line partly is expressed as sightless structure setting among the figure.

Fig. 3 is the plan view of nut in the cover nut shown in Figure 2.Dotted line partly is illustrated in figure 2 as sightless structure setting among the figure.

Fig. 4 is the plan view of nut sleeve in the cover nut shown in Figure 2.

Fig. 5 is the plan view of cover nut shown in Figure 2.Dotted line partly is expressed as invisible component thing among the figure.

Fig. 6 is installed in the pressure spring in the nut wall body and the Placement schematic representation of dead bolt shown in Fig. 1, Fig. 5.

Embodiment

In embodiment illustrated in fig. 1, be provided with a locked groove 5 that is upright wall body shape on the screw column at stud 1 two, the shelves groove of locked groove 5 is oppositely to be provided with mutually on the screw column at two.And the column cap at stud 1 two all is arranged to conical conehead 4.Among the figure, illustrate that with an attaching nut's 2 manifestation mode stud 1 two all is identical Placements and be connected identical nut 2.Among the figure, chimeric around the outer wall of nut 2 have a nut sleeve 3, nut sleeve 3 be according to the outer wall shape of nut 2 come supporting be provided with chimeric.On the inner wall of nut sleeve 3, be relatively set with firmly groove 6, link together after the stressed projection of firmly relative supporting setting on groove 6 and nut 2 outer wall 7 is mutual chimeric.Dotted line is represented partly as can be seen from figure, is provided with the fore shaft 8 in a four directions mouthful in the middle of side's wall body of nut 2, and fore shaft 8 is that inside and outside wall is through on the wall body of nut 2, is provided with pressure spring 10 in fore shaft 8, adjacent pressure spring 10 be dead bolt 9.Also be provided with a pawl eye 8. in the centre of each side's outer wall of nut sleeve 3

In embodiment illustrated in fig. 2, be arranged on fore shaft 8 in nut 2 wall bodies from diagram as can be seen, the wall of its mouthful is to be shrunk to rectangle hole by outer wall gradually to the inwall oral area.And nut 2 chimeric as shown in Figure 1 with nut sleeve 3.

Nut 2 among Fig. 3, the embodiment as shown in Figure 1 and Figure 2 embodiment illustrated in fig. 4, nut sleeve 3 described unanimities are so be omitted.

In embodiment illustrated in fig. 5, the lip of the tongue of dead bolt 9 is to be provided with according to the internal thread round mouth shape of nut 2.As can be seen, when not being connected with stud 1 spiral, the tip of the tongue of dead bolt 9 partly is compressed spring 10 and pushes against out fore shaft 8 from diagram.And it can also be seen that through careful identification also contracting in obviously in the tip, the left side of the lip of the tongue of actual dead bolt 9, is more conducive to dead bolt 9 like this and is supported back in the fore shaft 8 by screw column, help nut 2 and on stud 1, rotate and turn.The outstanding the lip of the tongue in dead bolt 9 the right then is more conducive to offset with the shelves groove on locked groove 5 the right, thus locking nut 2 more.

In embodiment illustrated in fig. 6, pressure spring 10 is cylindrical helical springs, and dead bolt 9 then is the rectangular blocks of a root of the tongue portion greater than the lip of the tongue.

Certainly, the link that dextrorotation shown in this stud 1 link of the present utility model is not limited to illustrate connects, stud 1 link that equally also can be used for left-handed connection, the shelves groove that only needs to be arranged on the vertical wall body of the locked groove 5 on the screw column at stud 1 two oppositely is provided with the lip of the tongue that is arranged on the dead bolt 9 in nut 2 wall bodies and gets final product.But such is provided with all within protection domain of the present utility model.

Claims

1, a kind of stud link with the suit bolt nut lock comprises stud (1), the nut (2) that spiral connects on the screw column at stud (1) two; It is characterized in that the described locked groove (5) that on the screw column at stud (1) two, is provided with; The column cap at described stud (1) two all is conical conehead (4); The described nut sleeve (3) that is provided with according to nut (2) outer wall shape that is set with around the outer wall of nut (2) is relatively set with firmly groove (6) on the inner wall of nut sleeve (3); Described also being provided with on the outer wall of nut (2) according to the firmly supporting chimeric stressed projection (7) of groove (6) shape on nut sleeve (3) inner wall; The described through fore shaft of inside and outside wall (8) that also is provided with in the wall body of nut (2) is provided with pressure spring (10) in fore shaft (8), the dead bolt (9) of adjacent pressure spring (10); Described dead bolt (9) is supported out fore shaft (8) back by the thrust of pressure spring (10) and is combined with locked groove (5), thereby with nut (2) and stud (1) locking.

2, the stud link with the suit bolt nut lock according to claim 1 is characterized in that described locked groove (5) is the retaining groove that is upright wall body from top to bottom of long strip.

3, the stud link with suit bolt nut lock according to claim 1 is characterized in that, the locked groove (5) on the described screw column that is arranged on stud (1) two is the locked groove (5) that retaining groove oppositely is set mutually.

4, the stud link with suit bolt nut lock according to claim 1 is characterized in that, the center of described each side's body in nut sleeve (3) is provided with can be for grabbing the pawl eye (11) that pulls.

5, the stud link with the suit bolt nut lock according to claim 1 is characterized in that described fore shaft (8) is the square mouth, and the wall of its mouthful is to be shrunk to rectangle hole by outer wall gradually to the inwall oral area.

6, the stud link with suit bolt nut lock according to claim 1 is characterized in that, described dead bolt (9) be one by root of the tongue portion to the lip of the tongue gradually in the oblique rectangular body of contraction; The rectangular body of described dead bolt (9) is less than the rectangle hole of fore shaft (8); The root of the tongue portion of described dead bolt (9) is greater than the mouth limit portion of fore shaft (8); The lip of the tongue of described dead bolt (9) is the internal thread round mouth setting according to nut (2).

7, the stud link with the suit bolt nut lock according to claim 1 is characterized in that described pressure spring (10) is a cylindrical helical spring.