CN2303120Y

CN2303120Y - Looseness-proof screw

Info

Publication number: CN2303120Y
Application number: CN 96224651
Authority: CN
Inventors: 邹高扬
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-23
Filing date: 1996-09-23
Publication date: 1999-01-06
Anticipated expiration: 2006-09-23

Abstract

The utility model discloses an anti-loosening bolt for fastening members. Two symmetrical concave-shaped grooves (7) are added to a common screw rod (1). A circular hole is drilled on a nut (3), and the circular hole is provided with an adjustable clamping pin (4) and a spring (5). An anti-loosening clamping pad (2), which has a convex-shaped inner hole, is inosculated with each concave-shaped groove of the screw rod and has twelve positioning holes (6) distributed evenly, is installed on the screw rod. The nut (3) is fixed tightly on the clamping pad (2). After the nut is fixed tightly, the clamping pin (4) is locked inside the positioning hole (6) corresponding to the clamping pad (2) by the spring (5), and the looseness of the nut can be prevented. When the nut is assembled and disassembled, the clamping pin (4) is pulled and folded to form 90DEG, the top surface of the clamping pin is parallel to the surface of the nut, and the condition of assembling and disassembling the bolt can be realized.

Description

Chek bolt

The utility model relates to a kind of chek bolt of fastening piece.

The various bolts that use at present fastening locking aspect, generally all adopt spring bolster mode.Its shortcoming is under the bigger occasion of frequent vibrations, and the spring bolster is easy to cause bolt looseness along with nut rotates simultaneously.Another kind of mode is after bolton, and split pin is inserted in boring on nut.Its shortcoming is installed inconvenience first, is difficult to the fastening degree that reaches desirable again.Second, hinge last is difficult to aim in the repeated use process.

The purpose of this utility model provides a kind of, and is easy to loading and unloading, arbitrarily fastening, reusable chek bolt.

In order to achieve the above object, the utility model be adopted a kind of, the Baltimore groove of two symmetries of increase on common screw, bore a circular hole on the nut, in adorn an adjustable bayonet lock and spring, an interior pore area convex and screw rod Baltimore groove are matched, above and the locking card pad that is drilled with the even positioning hole of 12 distribution an ancient unit of weight be positioned on the screw rod, the six-sided nut that adjustable bayonet lock and spring are housed is fastened on the locking card pad, when nut is fastening when putting in place, the spring on the nut is locked bayonet lock in the locking card pad positioning hole corresponding and is prevented nut loosening.Loading and unloading are pulled out bayonet lock during nut and are converted into 90 degree, and bayonet lock end face and nut plane parallel can be loaded and unloaded.

Major advantage of the present utility model is: easy to loading and unloading, can be in the grip arbitrary position clamping bolt, carry out lockingly, can reuse.This screw retention mode is applicable to all size model bolt.

Be described in further detail of the present utility model below in conjunction with drawings and Examples.

Fig. 1 is the general structure elevation cross-sectional view of chek bolt.

Fig. 2 is the general structure side view of chek bolt

Fig. 3 is the locking card pad front view of chek bolt.

Fig. 4 is the sectional drawing of the locking card pad I-I line of chek bolt shown in Figure 3.

Fig. 5 is the nut front view of chek bolt.

Fig. 6 is the sectional drawing of the nut II-II line of chek bolt shown in Figure 5.

Fig. 7 is the bayonet lock of the chek bolt view that latches.

Fig. 8 is the bayonet lock unlocking condition schematic representation of chek bolt.

With reference to accompanying drawing 1 Fig. 2: the utility model chek bolt is by the screw rod (1) that has two symmetrical Baltimore grooves (7), the plain cushion that matches with an interior pore area convex and screw rod Baltimore groove, the locking card pad (2) that is drilled with 12 positioning holes (6) that are evenly distributed above is as Fig. 3 Fig. 4, with on adjustable bayonet lock (4) and spring (5) be housed nut (3) form as Fig. 5 Fig. 6.

When nut is installed: locking card pad (2) is installed earlier, and, is aimed at the concave groove of screw rod (1), nut (3) is installed again, bayonet lock (4) is pulled out be converted into 90 degree simultaneously, as Fig. 8 with the tang of locking card pad (2).Like this end face of bayonet lock (4) and nut (3) plane be in parallel just can tightening nut.When that nut is fastening is again that bayonet lock (4) is stretching after putting in place because the effect of spring (5) is the outside top of bayonet lock (4), when nut be threaded to block the corresponding positioning hole of pad (2) (6) in the time, the outside ejection of bayonet lock (4) is locked in the positioning hole and just maintains static as Fig. 7 nut.Reach locking purpose.

If desired during the demolition bolt: the bayonet lock on the nut (4) is pulled out be converted into 90 degree earlier, make bayonet lock (4) withdraw from the positioning hole (6) of locking card pad (2), just can dismantle nut.

Claims

1. the chek bolt of a clamp structure, it is characterized in that: on screw rod (1), have two symmetrical Baltimore grooves (7), nut (3) is gone up circular hole of brill adjustable bayonet lock (4) and spring (5) is housed, on matching, interior pore area convex and screw rod Baltimore groove have the even locking card pad of positioning hole (6) (2) of 12 distribution an ancient unit of weight to be positioned on the screw rod (1), nut (3) is fastened on the card pad (2), and the fastening rear spring of nut (5) is locked bayonet lock (4) in card pad (2) corresponding positioning hole (6).

2. according to the described chek bolt of claim 1, it is characterized in that: the bayonet lock (4) on the nut (3) is pulled out and is converted into 90 when spending, the end face of bayonet lock (4) and nut (3) plane parallel.

3. according to the described chek bolt of claim 1, it is characterized in that: locking card pad (2) internal diameter has the tang that matches with screw rod (1) concave groove, and is drilled with 12 positioning holes (6) that are evenly distributed, and upward bayonet lock (4) is coaxial with nut (3) in its axle center.