CN203500245U

CN203500245U - Self-locking nut for bearing location

Info

Publication number: CN203500245U
Application number: CN201320413208.7U
Authority: CN
Inventors: 朱刚; 余洁明; 隆德峰
Original assignee: ZF Shanghai Steering Systems Co Ltd
Current assignee: Bosch Huayu Steering Systems Co Ltd
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-03-26
Anticipated expiration: 2023-07-11

Abstract

The utility model discloses a self-locking nut for bearing location. The self-locking nut comprises a nut body, wherein the middle part of the nut body is provided with a through hole, the nut body is in a hollow cylinder shape, the outer wall of a hollow cylinder is provided with an outer wall groove, the inner wall of the central through hole of the hollow cylinder is provided with an inner wall groove, the nut body is in circumferential distribution on the hollow cylinder of the nut body and is provided with four self-locking threaded holes in a way of penetrating through the hollow cylinder from top to bottom, and assembling and disassembling holes are arranged among the self-locking threaded holes; the outer wall groove transversely penetrates through the self-locking threaded holes, the width of the outer wall groove is 2-3 mm, the depth of the outer wall groove is configured to be the depth that the outer wall groove transversely penetrates through the self-locking threaded holes while exceeding the self-locking threaded holes for 0.8-1.2 mm, the inner wall groove is arranged on the inner wall of the central through hole, the width of the inner wall groove is 2-3 mm, and the diameter of the inner wall groove is 2-3 mm larger than that of the central through hole. The self-locking nut disclosed by the utility model is simple in structure, lower in cost and accurate in location, has a good self-locking function and is suitable for an axial location field of all kinds of bearing connection.

Description

A kind of bearing location self-locking nut

Technical field

The utility model relates to a kind of connector element, relates in particular to a kind of nut with auto-lock function being applied in axial positioning mechanism that bearing connects.

Background technique

At present, between the component of various mechanical devices, often adopt bearing to connect, and in the axial positioning mechanism of bearing, under prior art, the general one end that adopts is that the shaft shoulder coordinates retaining ring for shaft shoulder or similar structure, the other end adopts end cap, capping or similar structure, and two ends cooperation makes bearing carry out axially locating.

Yet the axially locating Placement that above-mentioned bearing connects has following defect:

1. the axially locating Placement that the bearing under prior art connects, due to its structural reason, is not easy to bearing to safeguard;

2. the axially locating Placement that the bearing under prior art connects, after long-time use, because the bolt of fixedly end cap or capping easily produces corrosion, causes dismounting difficult, and the destruction of easily causing correlated parts in unloading process;

3. the axially locating Placement that bearing connects, need to play airtight effect due to end cap or capping, so its diameter is often bigger than normal, causes the increase of the oeverall quality of product, is unfavorable for the lightweight of product;

In sum, if in integrated model maintenance, the less demanding situation of mechanism's overall weight, the axially locating Placement that prior art lower bearing connects can meet its needs really, yet, along with being showing improvement or progress day by day of scientific and technological level, the miniaturization of industrial machinery, light-weighted trend are more and more obvious, and the axially locating Placement that prior art lower bearing connects cannot meet its requirement.

Model utility content

In order to solve one end under prior art, be that the shaft shoulder coordinates retaining ring for shaft shoulder or similar structure, the other end adopts end cap, the existing many disadvantages of axial positioning mechanism that the bearing of capping or similar structure connects, the axially locating member that the utility model provides a kind of novel bearing to connect, not only accurate positioning and there is latch functions, can meet the growing light-weighted requirement of component miniaturization, and can be in the situation that not dismantling this member, bearing is carried out to the maintenance test work of grease lubrication and working state, concrete structure of the present utility model is as described below:

A bearing location self-locking nut, comprises nut body, it is characterized in that:

Described nut body is specially the hollow cylinder that has through hole in the middle of, offers outer wall groove on the outer wall of this hollow cylinder, and offers inner wall groove on the inwall of the central through bore of this hollow cylinder;

Described nut body is circle distribution and connects from top to bottom the 4 place's self-locking tapped holes that offer of cylinder formula on the body of its hollow cylinder shape, offers installing/dismounting hole between self-locking thread hole.

According to a kind of bearing of the present utility model location self-locking nut, it is characterized in that, the size of the intermediate throughholes of described nut body is corresponding with the axle that needs to locate, and offers internal thread on this through-hole wall, makes nut body spin and coordinate with the axle that needs location.

According to a kind of bearing of the present utility model location self-locking nut, it is characterized in that, described outer wall groove and inner wall groove are laterally to be offered and mutually staggers, wherein outer wall groove lateral direction penetrating is in self-locking tapped hole, outer wall well width is 2～3mm, and the degree of depth of this outer wall groove is lateral direction penetrating and exceeds tapped hole 0.8～1.2mm for self-locking, and inner wall groove is opened on the inwall of central through bore, inner wall groove width is 2～3mm, and the diameter of this inner wall groove is greater than the diameter 2～3mm of central through bore.

Inner wall groove is divided into upper and lower two-part by the internal thread of nut body, and outer wall groove makes this structure be screwed into 4 self-lockings with producing certain distortion after bolt, and then makes the internal thread up and down of this structure produce certain dislocation relatively, plays self-locking action.

The axle that needs location with self-locking nut in actual use, is first aimed at by the central through bore of nut body in a kind of bearing of the present utility model location, then spins to the cooperation place with bearing, and tightens, to guarantee that bearing is positioned on the axial position of regulation.And in order to overcome the easily loosening defect that is threaded in use, the inner wall groove of design is divided into upper and lower two-part by the internal thread of the intermediate throughholes of nut body, 4 places self-locking at nut body screws in bolt with tapped hole, by these four bolts, apply certain axial pre tightening force, add that outer wall groove is lateral direction penetrating and exceeds tapped hole 0.8～1.2mm for self-locking, make self-locking produce certain flow of metal with the screw-in place of tapped hole, and then make intermediate throughholes upper of this nut body, lower internal thread produces certain dislocation relatively, played a very good locking effect, prevent that it from use becoming flexible, in addition, by the screw-thread fit of the utility model and axle, bearing is positioned to the position of appointment, end cap or capping that the utility model is larger with adopting diameter under prior art are compared simply too much, and from structurally, do not dismantling in situation of the present utility model, can directly to bearing, carry out grease lubrication and the maintenance test work to working state.

Use a kind of bearing of the present utility model location to obtain following beneficial effect with self-locking nut:

1. a kind of bearing of the present utility model location self-locking nut, simple in structure, cost is lower, and accurate positioning, and by screwing in the bolt in self-locking thread hole, has obtained good auto-lock function;

2. a kind of bearing of the present utility model location self-locking nut, can meet the light-weighted requirement of component miniaturization, and can not dismantle in situation of the present utility model, bearing is carried out to the maintenance test work of grease lubrication and working state.

Accompanying drawing explanation

Fig. 1 is the concrete structure schematic diagram of self-locking nut for a kind of bearing of the present utility model location;

Fig. 2 is the concrete structure sectional view of self-locking nut for a kind of bearing of the present utility model location;

Fig. 3 is the concrete structure plan view of self-locking nut for a kind of bearing of the present utility model location.

In figure: 1-nut body, 1a-outer wall groove, 1b-inner wall groove, 1c-self-locking tapped hole, 1d-installing/dismounting hole.

Embodiment

Below in conjunction with drawings and Examples, a kind of bearing of the present utility model location is further described with self-locking nut.

Embodiment

As shown in Figure 1 to Figure 3, a bearing location self-locking nut, comprises nut body, and nut body is specially the hollow cylinder that has through hole in the middle of, on the outer wall of this hollow cylinder, offer outer wall groove 1a, and offer inner wall groove 1b on the inwall of the central through bore of this hollow cylinder;

What nut body 1 was circle distribution and connected from top to bottom cylinder formula on the body of its hollow cylinder shape offers 4 places self-locking tapped hole 1c, offers installing/dismounting hole 1d between self-locking thread hole.

The size of the intermediate throughholes of nut body 1 is corresponding with the axle that needs to locate, and offers internal thread on this through-hole wall, makes nut body spin and coordinate with the axle that needs location.

Outer wall groove 1a and inner wall groove 1b are laterally and offer, wherein outer wall groove lateral direction penetrating is in tapped hole for self-locking (1c), outer wall well width is that the width of outer wall groove in 2～3mm(the present embodiment is 2mm), the degree of depth of this outer wall groove be lateral direction penetrating and to exceed self-locking be 1mm by the distance exceeding in this enforcement of tapped hole 0.8～1.2mm(), and inner wall groove is opened on the inwall of central through bore, inner wall groove width is that the width of inner wall groove in 2～3mm(the present embodiment is 2mm), and the diameter of this inner wall groove is greater than in diameter 2～3mm(the present embodiment of central through bore as being greater than the diameter 2mm of central through bore).

A kind of bearing of the present utility model location is as described below with its concrete application of self-locking nut:

In actual use, first the central through bore of nut body 1 is aimed to the axle that needs location, then spin to the cooperation place with bearing, and tighten, to guarantee that bearing is positioned on the axial position of regulation.And in order to overcome the easily loosening defect that is threaded in use, the inner wall groove 1b of design is divided into upper and lower two-part by the internal thread of the intermediate throughholes of nut body, in the self-locking of 4 places of nut body, with tapped hole 1c, screw in bolt, by these four bolts, apply certain axial pre tightening force, add that outer wall groove 1a is lateral direction penetrating and exceeds tapped hole 0.8～1.2mm for self-locking, make self-locking produce certain flow of metal with the screw-in place of tapped hole, and then make intermediate throughholes upper of this nut body, lower internal thread produces certain dislocation relatively, played a very good locking effect, prevent that it from use becoming flexible, in addition, by the screw-thread fit of the utility model and axle, bearing is positioned to the position of appointment, end cap or capping that the utility model is larger with adopting diameter under prior art are compared simply too much, and from structurally, do not dismantling in situation of the present utility model, can directly to bearing, carry out grease lubrication and the maintenance test work to working state.

And need to dismantle a kind of bearing of the present utility model, locate while using self-locking nut, two pin rods are inserted to relative installing/dismounting hole 1d, and with a horizontal pin rod by two pin rod strings together, be rotated counterclockwise horizontal pin rod, can unscrew the utility model, then oppositely screw out bolt, finally whole the utility model is screwed out from the axial end of bearing.

A kind of bearing of the present utility model location self-locking nut, simple in structure, cost is lower, and accurate positioning, and by screwing in the bolt in self-locking thread hole, having obtained good auto-lock function, its utility model can meet the light-weighted requirement of component miniaturization, and can not dismantle in situation of the present utility model, bearing carried out to the maintenance test work of grease lubrication and working state.The utility model is applicable to the axially locating field that various bearings connect.

Claims

1. a bearing location self-locking nut, comprises nut body (1), it is characterized in that:

Described nut body (1) is specially the hollow cylinder that has through hole in the middle of, offers outer wall groove (1a) on the outer wall of this hollow cylinder, and offers inner wall groove (1b) on the inwall of the central through bore of this hollow cylinder;

What described nut body (1) was circle distribution and connected from top to bottom cylinder formula on the body of its hollow cylinder shape offers 4 places tapped hole (1c) for self-locking, and self-locking is with offering installing/dismounting hole (1d) between tapped hole.

2. a kind of bearing as claimed in claim 1 location self-locking nut, it is characterized in that, the size of the intermediate throughholes of described nut body (1) is corresponding with the axle that needs to locate, and offers internal thread on this through-hole wall, makes nut body spin and coordinate with the axle that needs location.

3. a kind of bearing as claimed in claim 1 location self-locking nut, it is characterized in that, described outer wall groove (1a) is and laterally offers and mutually stagger with inner wall groove (1b), wherein outer wall groove lateral direction penetrating is in tapped hole for self-locking (1c), outer wall well width is 2～3mm, the degree of depth of this outer wall groove is lateral direction penetrating and exceeds tapped hole 0.8～1.2mm for self-locking, and inner wall groove is opened on the inwall of central through bore, inner wall groove width is 2～3mm, and the diameter of this inner wall groove is greater than the diameter 2～3mm of central through bore.