CN204113858U - bolt and nut protective sleeve - Google Patents

Abstract

The utility model provides a bolt and nut protective sheath, it includes a protective sheath that link up from top to bottom, and the protective sheath includes sleeve pipe, lower casing and middle part sleeve pipe, and the middle part sleeve pipe sets up between upper casing, lower casing, and the inner wall of upper casing, lower casing is equipped with the spline, and the inner wall diameter size of upper casing, lower casing differs, and the sheathed tube inner wall diameter size of middle part is between the inner wall diameter size of upper casing, lower casing. The utility model discloses when using, earlier on the support through the various parts of bolt and nut installation, again at nut or bolt overhead this sheath of installation, realize the function of the contact of isolation nut and bolt head and other parts. Because the inner wall diameters of the upper casing and the lower casing are different, the protective sleeve can be suitable for two nuts and bolts with different sizes, and has good practicability. And the middle sleeve pipe can be detachably connected with the upper sleeve pipe and the lower sleeve pipe, and the middle sleeve pipes with different lengths can be selected to be matched with bolts with different lengths.

Description

Bolt and nut protecting jacket

[technical field]

The utility model relates to a kind of technical field of automobile parts, refers to a kind of bolt and nut protecting jacket particularly.

[background technique]

In vehicle assembling, the trend of electrical equipment wiring harness cannot avoid all bolts or nut, wire harness may depart from former fixed position in vehicle ride process, cause the friction with bolt or nut, long-term friction can cause the breakage of wire harness and then cause short circuit, cause electrical apparatus element to burn, time serious, even cause burning car.For head it off, need to design a kind of sheath that can assemble with the hex head bolt that often uses in operator cabin or nut, keep apart wire harness, avoid bolt, nut and electrical harness to wear and tear, to improve the Security of vehicle.

Be that CN201320589503.8 discloses a kind of bolt and nut protecting jacket in Chinese Patent Application No.; it comprises bolt protection case, nut-protecting sleeve and liner; the top connecting bolt protecting jacket of nut-protecting sleeve; the bottom of nut-protecting sleeve connects a circle liner; the inside of bolt protection case is columniform rubber nut groove, and the inside of nut-protecting sleeve is hexagonal rubber bolt slot.This kind of bolt and nut protecting jacket can only be protected a kind of bolt and nut of specification, and protection domain has narrow limitation, therefore, need improve prior art.

[model utility content]

In view of this, be necessary to provide a kind of bolt and nut protecting jacket of easy to use, reliable performance.

For achieving the above object; the utility model provides a kind of bolt and nut protecting jacket; it comprises the protecting jacket of a up/down perforation; it is characterized in that: described protecting jacket comprises sleeve pipe, casing running and medial sleeve; described medial sleeve is arranged between sleeve pipe, casing running; described upper sleeve pipe, cased inwall are provided with spline, and described upper sleeve pipe, cased inner diameter size differ, and the inner diameter size of described medial sleeve is between upper sleeve pipe, cased inner diameter size.

Preferably, described upper sleeve pipe, casing running and described medial sleeve removably connect.

The utility model in use, is first installed various part by bolt and nut, then install this sheath on nut or bolt head on support, realizes the function of the contact of isolation nut and bolt head and other part.

Because upper sleeve pipe, cased inner diameter differ, therefore can be applicable to the different nut and bolt of two sizes with this protecting jacket, there is good practicability.And medial sleeve is by removably connecting with upper sleeve pipe, casing running, the different medial sleeve of length can be selected to realize the cooperation from the bolt of different length.

[accompanying drawing explanation]

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the utility model using state schematic diagram;

Fig. 3 is that the utility model coordinates schematic diagram with nut or bolt head;

Fig. 4 is A place enlarged diagram in Fig. 3.

[embodiment]

For understanding the utility model better, below with reference to accompanying drawing, the embodiment to model utility is described in detail.

With reference to figure 1; a kind of bolt and nut protecting jacket of the present embodiment; it comprises the protecting jacket of a up/down perforation; the protecting jacket of the present embodiment is 3 stops; it comprises sleeve pipe 1, casing running 2 and medial sleeve 3, and medial sleeve 2 is arranged between sleeve pipe 1, casing running 2, and the inwall of upper sleeve pipe 1, casing running 2 is equipped with spline; the inner diameter size of upper sleeve pipe 1 and casing running 2 differs, and the inner diameter size of medial sleeve 3 is between the inner diameter size of upper sleeve pipe 1, casing running 2.

With reference to figure 2, the present embodiment first installs various part by bolt 5 and cooperatively interacting of nut 6 on support 4, then installs this protecting jacket on nut 6 or bolt 5 head, realizes the function of the contact of isolation nut 6 and bolt 5 head and other part.

With reference to figure 3 and Fig. 4, this protecting jacket carries out interference fit by the outer surface of inner spline and bolt 5 or nut 6, avoids protecting jacket to get loose phenomenon.

This protecting jacket can be realized and the coordinating of the bolt of different size by the size of upper and lower two ends inner diameter difference, and the bolt as sleeve pipe on one end 1 and M5 cooperatively interacts, and the other end casing running 2 coordinates with the bolt of M6.

Because the upper sleeve pipe 1 of this protecting jacket, casing running 2 removably connect with medial sleeve 3, and then the cooperation from the bolt of different length can be realized by the medial sleeve 3 changing different length.And the mode removably connected can be selected as simple screw thread or recessed bond ing.

In the utility model, to have part mounting operation simple, fixed for bolt and nut protecting jacket, and structure is simple and easy to processing, cost is low, can realize the feature of generalization, standardized designs.

The above embodiment only have expressed a kind of mode of execution of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (2)

1. a bolt and nut protecting jacket; it comprises the protecting jacket of a up/down perforation; it is characterized in that: described protecting jacket comprises sleeve pipe, casing running and medial sleeve; described medial sleeve is arranged between sleeve pipe, casing running; described upper sleeve pipe, cased inwall are provided with spline; described upper sleeve pipe, cased inner diameter size differ, and the inner diameter size of described medial sleeve is between upper sleeve pipe, cased inner diameter size.

2. bolt and nut protecting jacket according to claim 1, is characterized in that: described upper sleeve pipe, casing running and described medial sleeve removably connect.