CN203081979U

CN203081979U - Novel bolt

Info

Publication number: CN203081979U
Application number: CN 201320001104
Authority: CN
Inventors: 陈文辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-05
Filing date: 2013-01-05
Publication date: 2013-07-24
Anticipated expiration: 2023-01-05

Abstract

The utility model discloses a fastening piece, and particularly provides a novel bolt. The novel bolt comprises a bolt head and a threaded rod, wherein a groove is arranged in the threaded rod and close to the bolt head, meanwhile the opening rim of the groove is a necking, a ball pin and a spring used for abutting the ball pin to the necking are placed in the groove, the inner diameter of the necking is smaller than the diameter of the ball pin, and a part of the ball head of the ball pin is exposed of the threaded rod. According to the novel bolt, the opening rim of the groove is the necking, the ball pin and the spring used for abutting the ball pin to the necking are placed in the groove, the inner diameter of the necking is smaller than the diameter of the ball pin, and a part of the ball head of the ball pin is exposed of the threaded rod. The threaded rod of the bolt is inserted in a through hole of a part being connected, the ball head part of the ball pin on the threaded rod will always be in abut joint with the inner wall of the through hole, even if work vibration of the connected part is generated, the bolt in the through hole of the connected bolt can not move, and therefore the bolt has the advantages of being high in work stability.

Description

Novel bolt

Technical field

The utility model relates to a kind of fastening piece, particularly novel bolt.

Background technique

Bolt: by a head and screw rod (having an externally threaded cylindrical body) class fastening piece dimerous, need to cooperate, be used to be fastenedly connected two parts that have through hole with nut.This Connecting format claims bolt to connect.As nut is screwed off from bolt, can make these two parts separately again, be to belong to removably connect so bolt connects.

Bolt on the existing market, its screw surface has only screw thread, in above-mentioned screw rod inserts the through hole that is connected part by nut fixing after, still there are certain free gap in screw rod and through-hole wall, under the work vibrations that are connected part, screw rod can produce micro displacement in through hole, in the course of time, it is loosening that bolt and being screwed in will produce between the nut on the bolt, influences connective stability.

The model utility content

The purpose of this utility model is to provide a kind of hex head bolt in order to solve above-mentioned the deficiencies in the prior art, the utility model the time in, the screw rod of its bolt head is towards having certain impacting force in the face of the surface that is connected part.

To achieve these goals, a kind of novel bolt that the utility model is designed, comprise bolt head and screw rod, described screw rod is provided with groove, described groove is near the bolt head setting, and the mouth of described groove is along being reducing simultaneously, is placed with the bulb pin and with the spring of bulb pin apical grafting in reducing in groove, the internal diameter of described reducing is less than the diameter of bulb pin, and the part bulb of described bulb pin is exposed at outside the screw rod.

The mouth of groove described in the said structure is along for reducing, is placed with the bulb pin and with the spring of bulb pin apical grafting in reducing, the internal diameter of described reducing is less than the diameter of bulb pin in groove, and the part bulb of described bulb pin is exposed at outside the screw rod.The screw rod of this bolt is plugged in the through hole that is connected part, the ball head branch of the bulb pin on the screw rod all the time with the through-hole wall apical grafting, even be connected part generation work vibrations, the interior bolt of through hole that is connected part can not produce displacement yet, so the bolt in the utility model has the high advantage of working stability.

Screw rod is two-part described in the utility model, wherein the exterior edge face of upper semisection is provided with thread groove, described thread groove is concentric shape with screw rod, the upper semisection of its lower semisection connects end face and is provided with the screw column that cooperates with above-mentioned thread groove, and the helical of screw column is opposite with the helical of screw rod, the length of its screw rod that makes the bolt of said structure can realize changing, make the utility model promptly be fit to fixed thickness thicker be connected part, also be fit to connect the part that is connected of thinner thickness simultaneously.

The outsourcing of bolt head described in the utility model is connected to rubber, and it can prevent that the bolt head that is exposed on the external from scratching the staff or drawing other parts of damage or parts.

The sidewall of bolt head described in the utility model is the frosted shape, and when the employing instrument was tightened or unscrewed this bolt, the frictional force between its bolt head surface and the hammer internal surface is big, and was more laborsaving when making staff's dismounting.

The novel hex head bolt that the utility model the obtains existing hex head bolt of comparing, it has the following advantages: 1) mouth of groove described in the utility model is along being reducing, in groove, be placed with the bulb pin and with the spring of bulb pin apical grafting in reducing, the internal diameter of described reducing is less than the diameter of bulb pin, and the part bulb of described bulb pin is exposed at outside the screw rod.The screw rod of this bolt is plugged in the through hole that is connected part, the ball head branch of the bulb pin on the screw rod all the time with the through-hole wall apical grafting, even be connected part generation work vibrations, the interior bolt of through hole that is connected part can not produce displacement yet, so the bolt in the utility model has the high advantage of working stability.

2) screw rod of the present utility model is the structure of two-part, make its promptly be fit to fixed thickness thicker be connected part, also be fit to connect the part that is connected of thinner thickness simultaneously.

3) outsourcing of bolt head described in the utility model is connected to rubber, and it can prevent that the bolt head that is exposed on the external from scratching the staff or drawing other parts of damage or parts.

4) dismounting of the present utility model is laborsaving.

Description of drawings

Fig. 1 is embodiment 1 a structural representation;

Fig. 2 is the structural representation at A-A place among Fig. 1;

Fig. 3 is the partial view at B place among Fig. 2;

Fig. 4 is embodiment 2 a structural representation;

Fig. 5 is Fig. 4 right elevation;

Fig. 6 is the threaded stud structure schematic representation;

Fig. 7 is the structural representation of example 3;

Fig. 8 is embodiment 4 a structural representation.

Among the figure: bolt head 1, screw rod 2, groove 2-1, reducing 2-2, upper semisection 2-3, lower semisection 2-4, bulb pin 3, spring 4, rubber 5, thread groove 6, screw column 7.

Embodiment

Below in conjunction with drawings and Examples present embodiment is further specified.

Embodiment 1:

As Fig. 1, Fig. 2 and shown in Figure 3, the novel bolt that present embodiment provides, comprise bolt head 1 and screw rod 2, described screw rod 2 is provided with groove 2-1, described groove 2-1 is provided with near bolt head 1, and the mouth of described groove 2-1 is along being reducing 2-2 simultaneously, is placed with bulb pin 3 and with the spring 4 of bulb pin 3 apical graftings at reducing 2-2 in groove 2-1, the internal diameter of described reducing 2-2 is less than the diameter of bulb pin 3, and the part bulb of described bulb pin 3 is exposed at outside the screw rod 2.

The mouth of the 2-1 of groove described in the said structure is along being reducing 2-2, in groove 2-1, be placed with bulb pin 3 and with the spring 4 of bulb pin 3 apical graftings at reducing 2-2, the internal diameter of described reducing 2-2 is less than the diameter of bulb pin 3, and the part bulb of described bulb pin 3 is exposed at outside the screw rod 2.The screw rod 2 of this bolt is plugged in the through hole that is connected part, the ball head branch of the bulb pin 3 on the screw rod 2 all the time with the through-hole wall apical grafting, even be connected part generation work vibrations, the interior bolt of through hole that is connected part can not produce displacement yet, so the bolt in the present embodiment has the high advantage of working stability.

Embodiment 2:

As Fig. 4, Fig. 5, shown in Figure 6, the novel bolt that present embodiment provides, its general structure is consistent with embodiment 1, but screw rod described in the present embodiment 2 is two-part, wherein the exterior edge face of upper semisection 2-3 is provided with thread groove 6, described thread groove is concentric shape with screw rod 2, the upper semisection 2-3 of its lower semisection 2-4 connects end face and is provided with the screw column 7 that cooperates with above-mentioned thread groove 6, and the helical of screw column 7 is opposite with the helical of screw rod 2, the length of its screw rod 2 that makes the bolt of said structure can realize changing, make present embodiment promptly be fit to fixed thickness thicker be connected part, also be fit to connect the part that is connected of thinner thickness simultaneously.

Embodiment 3:

As shown in Figure 6, the novel bolt that present embodiment provides, its general structure is consistent with embodiment 1, but 1 outsourcing of bolt head described in the present embodiment is connected to rubber 5, and it can prevent that the bolt head 1 that is exposed on the external from scratching the staff or drawing other parts of damage or parts.

Embodiment 4:

As shown in Figure 7, the novel bolt that present embodiment provides, its general structure is consistent with embodiment 1, but the sidewall of bolt head described in the present embodiment 1 is the frosted shape, when the employing instrument is tightened or is unscrewed this bolt, frictional force between its bolt head 1 surface and the hammer internal surface is big, and is more laborsaving when making staff's dismounting.

Claims

1. novel bolt, comprise bolt head (1) and screw rod (2), it is characterized in that: described screw rod (2) is provided with groove (2-1), described groove (2-1) is provided with near bolt head (1), the mouth of described groove (2-1) is along being reducing (2-2) simultaneously, in groove (2-1), be placed with bulb pin (3) and with the spring (4) of bulb pin (3) apical grafting at reducing (2-2), the internal diameter of described reducing (2-2) is less than the diameter of bulb pin (3), and the part bulb of described bulb pin (3) is exposed at outside the screw rod (2).

2. novel bolt according to claim 1, it is characterized in that: described screw rod (2) is two-part, wherein the exterior edge face of upper semisection (2-3) is provided with thread groove (6), described thread groove (6) is concentric shape with screw rod (2), the upper semisection (2-3) of its lower semisection (2-4) connects end face and is provided with the screw column (7) that cooperates with above-mentioned thread groove (6), and the helical of screw column (7) is opposite with the helical of screw rod (2).

3. novel bolt according to claim 1 and 2 is characterized in that: described bolt head (1) outsourcing is connected to rubber (5).

4. novel bolt according to claim 1 and 2 is characterized in that: the sidewall of described bolt head (1) is the frosted shape.

5. novel bolt according to claim 3 is characterized in that: the sidewall of described bolt head (1) is the frosted shape.