Double-end tire bolt capable of preventing displacement and loosening

Abstract

The utility model discloses a double-end tire bolt capable of preventing displacement and loosening, which relates to the technical field of bolts and comprises a screw, a first nut, a second nut, a pressure pad component, a threaded opening and a first ring groove. The pressure pad assembly comprises an annular pad, a second ring groove, an inner ring surface, a plurality of groups of strip grooves and a third ring groove; the hub has the advantages that the friction force of the first nut on the contact surface of the hub can be increased by arranging the first ring groove, the fine displacement of the contact end surface of the first nut and the hub is reduced, the pressing end of the second nut is attached to the inner ring surface where the strip grooves are uniformly distributed, and the strip grooves are communicated with the second ring groove, so that the contact friction force can be increased, and the hub is prevented from being damaged. And when the bottom end of the annular pad is in contact with the steel ring end to be pressed and used, the friction force of the contact of the steel ring end can be improved through the third ring groove, and the fine displacement of the contact end face of the annular pad and the steel ring end is reduced, so that the service life is prolonged, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field more specifically is related to a double -end tire bolt of preventing displacement loosening. BACKGROUND

[0002] In the automobile industry, the tire bolt is as the key part of connecting the wheel hub, the steel ring and the tire;

[0003] In order to facilitate the disassembly and assembly of the wheel, the screw rod diameter in the automobile tire bolt assembly is smaller than the steel ring bolt hole diameter by 4-6mm, the contact end face of the nut and the steel ring is a plane and parallel to the steel ring plane;

[0004] The torque transmission route when the automobile travels is: the torque is transmitted to the tire bolt through the wheel hub, and then is transmitted to the steel ring and the tire (i.e. the wheel) through the plane of the contact of the nut and the steel ring, because of the diameter difference of the steel ring bolt hole and the screw rod, when the automobile transmits the large torque in the bumping vibration, starting acceleration and braking, the contact end face of the nut and the steel ring will appear the slight displacement, the long-term accumulation of the slight displacement will cause the displacement of the steel ring relative to the wheel hub, leading to the irregular operation of the wheel when walking, and the great shear force is generated to the tire bolt, and the nut loosens, the screw rod breaks and other serious consequences;

[0005] And, with the long time bearing of the wheel hub screw hole of the vehicle weight and the vibration and impact force in the driving process, the wear and tear expansion and other conditions also appear, the close cooperation between the tire bolt and the wheel hub screw hole gradually loosens, when the automobile transmits the large torque in the bumping vibration, starting acceleration and braking, the contact end face of the nut and the wheel hub also appears the slight displacement, the long-term accumulation of the slight displacement will cause the nut loosening, the steel ring displacement, and further cause the screw rod breakage, and the whole tire can fall off from the wheel hub, which greatly threatens the driving safety;

[0006] Therefore, it is urgent to provide a tire bolt which can strengthen the connection stability, reduce the slight displacement during use and improve the service life and safety. UTILITY MODEL CONTENTS

[0007] The utility model discloses a double -end tire bolt of preventing displacement loosening.

[0008] The utility model discloses a double -end tire bolt of preventing displacement loosening.

[0009] The utility model discloses a double -end tire bolt of preventing displacement loosening, including screw rod, first nut and second nut on two pole ends of screw rod respectively and with second nut pressure pad assembly of close -fitting pressure tight end, first nut and second nut pressure tight end are equipped with the screw thread mouth with screw rod screw thread connection respectively.

[0010] The first ring groove is arranged on the pressing end of the first nut and the second nut;

[0011] The pressing pad assembly comprises an annular pad arranged around the screw rod, a second ring groove arranged in the middle of one pad end of the annular pad, an inner ring surface formed in the second ring groove, and a plurality of groups of strip grooves arranged uniformly in the form of annular rings on the inner ring surface.

[0012] The second ring groove is connected to the inner ring end of the annular pad, and the strip ends of the plurality of groups of strip grooves are directed towards the annular center of the inner ring surface;

[0013] The second nut extends into the second ring groove, and the pressing end of the second nut is attached to the inner ring surface, and the second ring groove is connected to the strip groove.

[0014] As a preferred technical solution of the utility model, the first ring groove is arranged around the threaded port.

[0015] As a preferred technical solution of the utility model, the first ring groove is arranged around the threaded port.

[0016] As a preferred technical solution of the utility model, the pressing pad assembly further comprises a third ring groove arranged on the other side of the annular pad opposite to the second ring groove, the third ring groove is arranged in a plurality of groups and in the form of concentric circles with gradually increasing sizes, and the annular center of the third ring groove is located on the annular center axis of the annular pad.

[0017] As a preferred technical solution of the utility model, the annular inner wall of the first ring groove is attached to the periphery of the second nut.

[0018] As a preferred technical solution of the utility model, the strip groove is connected to the inner ring end of the annular pad through the inner ring surface.

[0019] As a preferred technical solution of the utility model, the material of the pressing pad assembly is stainless steel.

[0020] The utility model has the following beneficial effects:

[0021] By arranging the first ring groove on the pressing end of the first nut and the second nut, the friction force of the first nut on the contact surface of the hub can be increased, the slight displacement of the contact end surface of the first nut and the hub can be reduced, the pressing end of the second nut is attached to the inner ring surface uniformly covered with strip grooves and the strip grooves and the second ring groove are connected, the friction force of the contact can be increased to reduce the slight displacement of the inner ring surface of the second nut in contact with the annular pad, and when the bottom end of the annular pad contacts the steel ring end and is pressed into use, the friction force of the contact with the steel ring end can be increased through the third ring groove, and the slight displacement of the contact end surface of the annular pad and the steel ring end can be reduced, so that the service life and safety can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the utility model;

[0023] Figure 2 is Figure 1 a partial structure A schematic view;

[0024] Figure 3 is Figure 1 a pressure pad assembly bottom structure schematic view.

[0025] Reference signs: screw rod-1, first nut-2, pressure pad assembly-3, first ring groove-4, second nut-5, annular pad-31, second ring groove-32, inner ring surface-33, strip groove-34. DETAILED DESCRIPTION

[0026] As Figures 1-3 shown, the utility model provides: a double head tire bolt of preventing displacement loose, including screw rod 1, first nut 2 and second nut 5 respectively at the two rod ends of screw rod 1, and pressure pad assembly 3 with second nut 5 pressure end adhesion, and the first nut 2 and second nut 5 pressure end are equipped with the threaded orifice respectively with the screw thread connection of screw rod 1, the material of pressure pad assembly 3 is stainless steel,

[0027] As Figure 1 shown, the second nut 5 is used at the steel ring end pressure, and the first nut 2 is used at the wheel hub end pressure, and the first nut 2 and the second nut 5 are all equipped with threaded orifice respectively to be connected with the rod end screw thread of screw rod 1 respectively, and the pressure pad assembly 3 is set at the second nut 5 pressure end to increase the stress dispersion when pressure is used and reduce friction,

[0028] Still including the first ring groove 4 on the pressure end of first nut 2 and second nut 5, after installation is used, the friction force of first nut 2 to the wheel hub contact surface can be increased, the slight displacement of first nut 2 and the wheel hub contact end surface is reduced to improve the service life, safety,

[0029] The specific structure of the pressure pad assembly 3 is as follows:

[0030] The pressure pad assembly 3 includes annular pad 31 around screw rod 1, second ring groove 32 centrally arranged at one pad end of annular pad 31, inner ring surface 33 formed in second ring groove 32, and multiple groups of strip grooves 34 uniformly arranged in the form of annulus on inner ring surface 33;

[0031] The second ring groove 32 is connected with the inner ring end of annular pad 31, and the strip end of the multiple groups of strip grooves 34 is directed to the annular center of inner ring surface 33;

[0032] As Figure 1As shown, the second ring groove 32 is arranged at the central position of the top end of the annular pad 31, which is directly connected to the inner ring end of the annular pad 31 (the second ring groove 32 is equivalent to the upper part of the inner ring end of the annular pad 31 which is expanded outward), and a plurality of strip grooves 34 are arranged on the bottom end surface of the inner wall of the second ring groove 32 (the bottom end surface is the inner ring surface 33), and the strip end of the strip groove 34 is towards the annular center of the inner ring surface 33, and the plurality of strip grooves 34 are uniformly distributed, so that the plurality of strip grooves 34 are annularly divergent with the annular center of the inner ring surface 33 as the center point.

[0033] The second nut 5 extends into the second ring groove 32, and the pressing end of the second nut 5 is attached to the inner ring surface 33, and the first ring groove 4 is connected to the strip groove 34; the pressing end of the second nut 5 is attached to the inner ring surface 33 which is uniformly covered with strip grooves 34, and the strip grooves 34 and the second ring groove 32 are connected, which can improve the frictional force of contact, reduce the slight displacement of the second nut 5 contacting the inner ring surface 33 in the annular pad 31, and improve the service life and safety.

[0034] The pad assembly 3 further comprises a third ring groove 35 arranged on the other side of the annular pad 31 relative to the second ring groove 32, the third ring groove 35 is provided with a plurality of concentric circles which are sequentially increased, and the annular center of the third ring groove 35 is on the annular center axis of the annular pad 31; as shown, Figure 1 、 3 The third ring groove 35 is arranged at the bottom end of the annular pad 31, and the plurality of third ring grooves 35 are arranged in the form of concentric circles which are sequentially increased and surround the inner ring end of the annular pad 31, and the annular centers coincide, and when the bottom end of the annular pad 31 contacts the steel ring end for pressing, the third ring groove 35 can improve the frictional force of the contact with the steel ring end, reduce the slight displacement of the contact surface between the annular pad 31 and the steel ring end, and improve the service life and safety;

[0035] And each adjacent two groups of third ring grooves 35 and the innermost group of the plurality of third ring grooves 35 and the inner ring end of the annular pad 31 have a spacing.

[0036] The first ring groove 4 surrounds the threaded port, and the annular center of the first ring groove 4 overlaps the center of the threaded port, so that when the second nut 5 is attached to the inner ring surface 33 and the outside of the hub, more uniform and comprehensive frictional resistance can be provided to improve the stability of the attachment;

[0037] The first ring groove 4 is provided with a plurality of concentric circles which are sequentially increased with the center of the threaded port as the center, and a plurality of groups are reasonably arranged to further improve the stability of the first nut 2 and the second nut 5 when they are attached;

[0038] And each adjacent two groups of first ring grooves 4 and the innermost group of the plurality of first ring grooves 4 and the threaded port have a spacing.

[0039] The annular inner wall of the second annular groove 32 is attached to the periphery of the nut 2, so that when the second nut 5 is placed in the second annular groove 32, the wrapping provides a positioning effect, that is, the centering is convenient to determine, so that the uniformity when the second nut 5 is attached to the inner annular surface 33 is better, and the attachment stability is improved.

[0040] The strip groove 34 is in communication with the inner annular end of the annular pad 31 through the inner annular surface 33, as shown in the figure. Figure 2 As shown in the figure, one end of the strip groove 34 close to the inner annular end of the annular pad 31 is not directly communicated with it, so that the support strength of the structure of the strip groove 34 can be improved, the possibility of deformation can be reduced, and the structural strength can be improved.

[0041] The basic principles and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0042] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A double-head tire bolt capable of preventing loosening due to displacement, comprising a screw rod (1), a first nut (2) and a second nut (5) respectively arranged at two ends of the screw rod (1), and a pressing pad assembly (3) abutting against the pressing end of the second nut (5), wherein the pressing end of the first nut (2) and the pressing end of the second nut (5) are respectively provided with a threaded hole for threadedly connecting with the screw rod (1); further comprising a first annular groove (4) arranged on the pressing end of the first nut (2) and the pressing end of the second nut (5); the pressing pad assembly (3) comprises an annular pad (31) arranged around the screw rod (1), a second annular groove (32) arranged at one pad end of the annular pad (31), an inner annular surface (33) formed in the second annular groove (32), and a plurality of strip grooves (34) arranged in the inner annular surface (33) in a ring shape; the second annular groove (32) is connected with the inner ring end of the annular pad (31), and the strip ends of the plurality of strip grooves (34) are all directed to the annular center of the inner annular surface (33); the second nut (5) extends into the second annular groove (32), and the pressing end of the second nut (5) abuts against the inner annular surface (33); the first annular groove (4) is connected with the strip grooves (34). characterized in that The first annular groove (4) is arranged outside the threaded hole. The first annular groove (4) is provided with a plurality of groups and is in the shape of concentric circles with the center of the threaded hole as the center and gradually increasing. The pressing pad assembly (3) further comprises a third annular groove (35) arranged on the other side of the annular pad (31) relative to the second annular groove (32), the third annular groove (35) is provided with a plurality of groups and is in the shape of concentric circles gradually increasing, and the annular center of the third annular groove (35) is located on the annular center axis of the annular pad (31). The annular inner wall of the second annular groove (32) abuts against the periphery of the second nut (5).

2. A double head tyre bolt to prevent loosening due to shifting according to claim 1, characterized in that, The strip grooves (34) are connected with the inner ring end of the annular pad (31) through the inner annular surface (33).

3. A double head tyre bolt to prevent loosening due to shifting according to claim 2, characterized in that, The material of the pressing pad assembly (3) is stainless steel.

4. A double head tyre bolt to prevent loosening due to shifting according to claim 1, wherein ​ 5. The anti-walkaway loose double head tire bolt of claim 1 wherein, ​ 6. A double head tyre bolt to prevent loosening due to shifting according to claim 1, wherein ​ 7. A double head tyre bolt to prevent loosening due to shifting as claimed in claim 1 wherein, ​

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