CN217653058U - Nut fastening assembly - Google Patents

Abstract

The utility model provides a nut fastening assembly, it is suitable for with external screw thread fastener threaded connection in order to fix first part and second part each other with an interval. The nut tightening assembly includes: a mounting nut adapted for threaded connection with the externally threaded fastener and including a first passage; an adjustment bushing receivable within and operatively engaged with the first channel, the adjustment bushing being movable in an axial direction of the first channel away from the mounting nut while rotating in a first direction relative to the mounting nut, the adjustment bushing including a second channel and being configured to have an interference fit therewith when the externally threaded fastener is threaded into the second channel. The mounting nut is provided with an abutting portion, and the adjustment bush is provided with a holding portion for abutting against the abutting portion to block the adjustment bush from rotating in the first direction relative to the mounting nut. The nut fastening component can effectively prevent the adjusting bush and the mounting nut from being accidentally locked or separated in the transportation process.

Description

Nut fastening assembly

Technical Field

The present invention relates generally to the field of fastener technology, and more particularly to a nut fastening assembly.

Background

In the automotive industry, it is often necessary to secure additional and support components to one another at a distance, such as two panels. Such installation scenarios typically require the use of fasteners with adjustment to accommodate or compensate for the gap between the additional component and the support component.

Known fasteners with an adjusting function are, for example, adjustable nuts which may comprise a mounting nut fixedly connected to the support part and a compensating bush in threaded engagement with the mounting nut, wherein the compensating bush may be moved in a direction away from the mounting nut when the bolt is screwed in due to a retaining force (e.g. friction) between the bolt and the compensating bush to adapt or compensate for a gap between the additional part and the support part.

In the prior art, the compensation bushing is usually required to be processed in a complex way so as to have a holding force between the bolt and the compensation bushing when the bolt is screwed in, and the manufacturing difficulty of the adjustable nut is increased. In addition, since such an adjustable nut has a plurality of parts, the compensating bush of the adjustable nut is usually partially screwed into the mounting nut for transportation, but vibration and the like during transportation may cause the compensating bush to be separated from the mounting nut, which requires additional time to mate the compensating bush and the mounting nut, on the one hand, and is liable to lose parts, on the other hand.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a problem that exists among the above-mentioned prior art is just solved to the purpose, provides an improved nut fastening assembly.

Therefore, the utility model provides a nut fastening components. The nut tightening assembly is adapted to be threadedly coupled with the externally threaded fastener to secure the first and second components to one another at a spacing. The nut tightening assembly includes: a mounting nut adapted to be mounted to the first component and adapted to be threadably connected with the externally threaded fastener, and the mounting nut including a first passage; and an adjustment bushing configured to be received within and operably engaged with the first channel such that the adjustment bushing is movable in an axial direction of the first channel from a reference position away from the mounting nut to an adjustment position while rotating in a first direction relative to the mounting nut, the adjustment bushing including a second channel that allows passage of the externally threaded fastener and being configured to interference fit with the externally threaded fastener when the externally threaded fastener is threaded into the second channel to rotate in the first direction relative to the mounting nut. The mounting nut is provided with an abutting portion, and the adjustment bush is provided with a holding portion provided for abutting with the abutting portion to hinder the adjustment bush from rotating in the first direction relative to the mounting nut.

Since the mounting nut and the adjustment bushing are two separately formed parts, the adjustment bushing is usually screwed into the mounting nut for transport during transport in order to avoid loss of parts of the nut tightening assembly during transport. Through setting up butt portion and holding portion can prevent to adjust the bush and follow the rotation and keep away from mounting nut for mounting nut to prevent factors such as vibration in the transportation from resulting in adjusting bush and mounting nut to separate completely, thereby avoid nut fastening assembly's part to lose, and be favorable to nut fastening assembly's quick use in batches.

The present invention may further include any one or more of the following alternatives according to the above technical concept.

In some alternatives, at least one of the abutment portion and the retaining portion is elastically deformable, and the abutment portion and the retaining portion are configured such that: the retaining portion is movable past the abutment to allow rotation of the adjustment bushing relative to the mounting nut in the first direction when the adjustment bushing is subjected to a torque greater than a torque threshold.

In some alternatives, the adjustment bushing is configured such that a torque experienced by the adjustment bushing due to interference with the externally threaded fastener as the externally threaded fastener is threaded into the second passage is greater than the torque threshold.

In some alternatives, the abutment has a chamfer to guide movement of the retention portion past the abutment.

In some alternatives, the adjustment bushing is further provided with a stop arranged for abutment with the abutment to prevent rotation of the adjustment bushing relative to the mounting nut from the reference position in a second direction opposite the first direction. In this manner, when the threaded part of the adjustment bush is transported completely screwed into the cylindrical portion of the mounting nut (i.e., with the adjustment bush in the reference position), it is possible to prevent the adjustment bush from rotating in a second direction opposite to the first direction due to the action of external factors such as vibration, i.e., prevent the adjustment bush from being further screwed into the cylindrical portion of the mounting nut to cause the adjustment bush to lock.

In some alternatives, the retainer is disposed adjacent to and spaced from the stop to allow the abutment to be at least partially between the retainer and the stop when the adjustment sleeve is in the reference position.

In some alternatives, the mounting nut includes a mounting portion adapted to be mounted to the first component and adapted to be threadably coupled to the externally threaded fastener, and a cylindrical portion disposed on the mounting portion and defining the first passage.

In some alternatives, the abutment portion includes a first section extending from the mounting portion generally in an axial direction of the cylindrical portion and a second section extending from the first section toward the cylindrical portion.

In some alternatives, the adjustment bushing includes a cylindrical threaded member adapted to operably engage the first passage and a mating member disposed at least partially within the threaded member, the mating member defining the second passage and adapted to interference fit with the externally threaded fastener when the externally threaded fastener is threaded into the second passage. The split construction of the adjustment bushing makes it easy to manufacture.

In some alternatives, the mating component includes a cylindrical mating body and a shoulder extending radially outward from the mating body.

In some alternatives, the retention portion has a first section extending from the shoulder generally in an axial direction of the mating body and a second section extending from the first section away from the mating body at an obtuse angle to the first section.

In some alternatives, the stop extends from the shoulder toward the mating body at an acute angle to the shoulder.

In some alternatives, the fitting body includes a cantilevered arm extending from and located inside a circumferential wall of the fitting body, the cantilevered arm for interference fit with the externally threaded fastener.

In some alternatives, the cantilever has a first portion extending from the circumferential wall toward a central axis of the mating body and a second portion extending from the first portion away from the central axis.

In some alternatives, a longitudinal end of the mating body is provided with a stop lug, and a longitudinal end of the threaded member is provided with a stop groove, the stop lug being capable of being bent outwardly into engagement with the stop groove after the mating body is inserted into position within the threaded member to prevent relative movement of the mating member and the threaded member.

In some alternatives, the mounting portion includes a first clamping plate, a second clamping plate, and a connecting section, the first clamping plate and the second clamping plate opposing each other and connected at one end by the connecting section to form a clamping space therebetween for at least partially receiving and clamping the first component, the barrel portion being disposed on the first clamping plate, the second clamping plate including a plate body and at least one side arm connected to and at least partially spaced from the plate body, the plate body being provided with a fastening nut thereon for threaded connection with the externally threaded fastener, wherein the side arm is connected to the first clamping plate by the connecting section and suspends the plate body so as to be movable toward and/or away from the first clamping plate. By the suspended configuration of the plate main body, on the one hand, it is possible to reduce the insertion force required to insert the first member into the clamping space between the first clamping plate and the second clamping plate; on the other hand, when the externally threaded fastener is tightened, stress concentration at the connecting sections of the first and second chucking plates can be avoided.

In some alternatives, the first and second clamping plates are connected by two connecting sections, the second clamping plate comprising two side arms on either side of the plate body, each side arm being connected to the first clamping plate by a respective connecting section, wherein the plate body comprises a free end extending between the two connecting sections. So, when making fastening nut and board main part have the trend along with the external screw thread fastener is rotatory because the external screw thread fastener screws up gradually, the free end of board main part can interfere with the connecting section, hinders the rotation of board main part, and then can avoid the board main part to take place to fracture with the junction stress concentration of side arm.

In some alternatives, the channel wall of the first channel of the mounting nut is provided with an internal thread, and the adjustment bushing is correspondingly provided with an external thread matching the internal thread of the mounting nut; wherein the external thread of the adjusting bush is opposite to the external thread of the external thread fastener.

According to the utility model discloses a nut fastening components has easily make, convenient to use, can effectively prevent to adjust in the transportation that the bush is dead or the separation is locked with the mounting nut accident and can avoid mounting nut department stress concentration when external screw thread fastener screws up advantages such as.

Drawings

Other features and advantages of the present invention will be better understood from the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts, and in which:

fig. 1 is a perspective view of a nut tightening assembly according to an example embodiment of the invention;

fig. 2 is a cross-sectional view of a nut tightening assembly according to an exemplary embodiment of the present invention;

fig. 3 is an exploded view of a nut tightening assembly according to an exemplary embodiment of the present invention;

fig. 4 is a cross-sectional view of an adjustment sleeve of a nut tightening assembly according to an exemplary embodiment of the present invention;

fig. 5 is a schematic perspective view of a nut fastening assembly for fixing a first component and a second component to each other at a distance, wherein the first component and the second component are not yet fixed to each other and an adjustment bushing of the nut fastening assembly is in a reference position, according to an exemplary embodiment of the present invention; and

fig. 6 and 7 are a schematic plan view and a cross-sectional view, respectively, of a nut tightening assembly according to an exemplary embodiment of the present invention applied for fixing a first component and a second component to each other at a distance, wherein the first component and the second component have been fixed to each other and an adjustment bushing of the nut tightening assembly is in an adjustment position.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and specific examples, while indicating the particular manner of making and using the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The description herein of the structural positions of the respective components, such as the directions of upper, lower, top, bottom, etc., is not absolute, but relative. When the respective components are arranged as shown in the drawings, these direction expressions are appropriate, but when the positions of the respective components in the drawings are changed, these direction expressions are changed accordingly.

In the present invention, the axial direction of the cylindrical or annular member refers to a direction along the central axis of the member, the circumferential direction of the cylindrical or annular member refers to a direction along the circumference of the member, and the radial direction of the cylindrical or annular member refers to a direction perpendicular to the axial direction of the member through the central axis of the member.

Referring to fig. 1 to 3 and fig. 5 and 6, a nut fastening assembly 100 according to an exemplary embodiment of the present invention is adapted to be threadedly coupled with an externally threaded fastener 200 to fix a first member 300 and a second member 400 to each other at a distance. The nut tightening assembly 100 includes a mounting nut 102 and an adjustment bushing 104. The mounting nut 102 is adapted to be mounted to the first component 300 and adapted to be threadably coupled to the externally threaded fastener 200, and the mounting nut 102 includes a first passage 106 (see FIG. 3). The adjustment bushing 104 is configured to be received within the first channel 106 and to be operably engaged with the first channel 106 such that the adjustment bushing 104 is movable from a reference position (see fig. 1 and 5) away from the mounting nut 102 to an adjustment position (see fig. 6) along an axial direction of the first channel 106 while rotating relative to the mounting nut 102 in the first direction D1. The adjustment bushing 104 includes a second passage 108 (see fig. 2) that allows passage of the externally threaded fastener 200 and is configured to interference fit with the externally threaded fastener 200 when the externally threaded fastener 200 is threaded into the second passage 108 to rotate with the externally threaded fastener 200 relative to the mounting nut 102 in the first direction D1.

Referring to FIG. 3, in the illustrated embodiment, mounting nut 102 may include a mounting portion 110 and a cylindrical portion 112. Mounting portion 110 may be mounted to first component 300 and adapted to be threadably coupled with externally threaded fastener 200. The mounting portion 110 may include a first clamping plate 114, a second clamping plate 116, a connecting section 118, and a fastening nut 120. The first and second clamping plates 114, 116 are opposed to each other and connected at one end by a connecting section 118 to form a clamping space therebetween for receiving and at least partially clamping the first component 300. The cylindrical portion 112 may be disposed on a first clamping plate 114 and define the first channel 106 for receiving the adjustment bushing 104. A fastening nut 120 may be provided on second clamping plate 116 for threaded connection with male threaded fastener 200.

Referring to fig. 5 and 6, in the illustrated embodiment, the externally threaded fastener 200 is in the form of a bolt to be threadedly coupled with the fastening nut 120, thereby fixing the first and second members 300 and 400 in the form of panels to each other. It will be appreciated that the externally threaded fastener 200 may also take other suitable forms; the nut tightening assembly 100 may also be used to secure other forms of the first and second members 300 and 400 to each other. The first and second members 300 and 400 may be provided with first and second fastening holes 302 and 402, respectively, the functions of which will be described below. The reference position of the adjustment bushing 104 shown in fig. 5 defines a minimum fixed spacing of the first and second components 300 and 400. The adjustment bushing 104 may be moved in an axial direction of the first passage 106 from a reference position away from the mounting nut 102 to a plurality of adjustment positions (e.g., to the adjustment position shown in fig. 6) to allow the first and second components 300 and 400 to be secured at a plurality of spacings greater than the minimum fixed spacing. This allows the nut tightening assembly 100 to be used in different application scenarios where fixation is performed at different pitches, while it is particularly advantageous in case the first component 300 and the second component 400 need to be fixed at multiple locations and the pitches at the respective fixation locations are not exactly the same.

Referring back to fig. 3, the second clamping plate 116 of the mounting portion 110 may include a plate body 122 and at least one side arm 124 connected to and at least partially spaced apart from the plate body 122. The fastening nut 120 may be provided on the plate body 122. The side arms 124 may be connected with the first clamping plate 114 by the connecting sections 118 such that the plate body 122 is suspended to be movable toward and/or away from the first clamping plate 114.

Since the plate main body 122 of the second clamp plate 116 has a suspended configuration, on the one hand, it is possible to reduce the insertion force required to insert the first member 300 into the clamp space between the first clamp plate 114 and the second clamp plate 116; on the other hand, when the male threaded fastener 200 is threadedly engaged with the fastening nut 120, the fastening nut 120 can relatively easily move toward the first clamping plate 114 as the male threaded fastener 200 is tightened, avoiding stress concentration at the connection of the first clamping plate 114 and the second clamping plate 116 (i.e., at the connection section 118).

In the illustrated embodiment, the first and second clamping plates 114, 116 are connected by two connecting sections 118. The second clamping plate 116 comprises two side arms 124, one on each side of the plate body 122, each side arm 124 being connected to the first clamping plate 114 by a respective connecting section 118. Wherein the plate body 122 includes a free end 126 that extends between the two connection sections 118. In the illustrated embodiment, each side arm 124 is connected at both ends to the link section 118 and the plate body 122, respectively.

Since the free end 126 of the plate body 122 extends between the two connecting sections 118, when the fastening nut 120 and the plate body 122 tend to rotate with the external threaded fastener 200 due to the gradual tightening of the external threaded fastener 200, the free end 126 of the plate body 122 can interfere with the connecting sections 118, hindering the rotation of the plate body 122, and thus avoiding the fracture due to stress concentration at the connection between the plate body 122 and the side arm 124.

Referring to fig. 3, the adjustment bushing 104 may include a cylindrical threaded member 128 and a mating member 130 at least partially disposed within the threaded member 128. The threaded member 128 may be operably engaged with the first passage 106 of the mounting nut 102. The mating member 130 may include a cylindrical mating body 132 and a shoulder 134 extending radially outward from the mating body 132, wherein the mating body 132 defines the second passage 108 and is adapted to interference fit with the externally threaded fastener 200 when the externally threaded fastener 200 is threaded into the second passage 108.

In the illustrated embodiment, a longitudinal end of the mating body 132 may be provided with a limit lug 136 and a longitudinal end of the threaded member 128 may be provided with a limit groove 138. The retention tabs 136 can be bent outwardly into engagement with the retention grooves 138 after the mating body 132 is inserted into position within the threaded member 128 to prevent relative movement of the threaded member 128 and the mating member 130. In other words, the threaded part 128 and the mating part 130 of the adjustment bushing 104 may be assembled with each other by the stopper lug 136 and the stopper groove 138. The split configuration of the adjustment bushing 104 reduces the difficulty of manufacturing the adjustment bushing 104.

In the illustrated embodiment, the shoulder 134 may also be provided with an aperture 140. The apertures 140 of the shoulder 134 may be engaged with protrusions (not shown) on an assembly fixture of the adjustment bushing 104 to secure the mating member 130 to the assembly fixture, the threaded member 128 may then be sleeved over the mating body 132 of the mating member 130, and the stop lug 136 may then be bent with a tool to assemble the threaded member 128 and the mating member 130 into the adjustment bushing 104. In the illustrated embodiment, shoulder 134 includes two symmetrically disposed openings, it being understood that shoulder 134 may include any other suitable number of openings.

Referring to fig. 4, in the illustrated embodiment, the mating body 132 may include a cantilevered arm 142 extending from and located inward of a circumferential wall of the mating body 132, the cantilevered arm 142 for interference fit with the externally threaded fastener 200 when the externally threaded fastener 200 is threaded into the second passage 108. The cantilever 142 can have a first portion 144 extending from the circumferential wall toward a central axis of the mating body 132 and a second portion 146 extending from the first portion 144 away from the central axis. As such, when it is desired to remove the externally threaded fastener 200, the externally threaded fastener 200 can be easily pulled out directly in the axial direction of the second passage 108. It is envisioned that if the cantilever arms 142 had only the first portion 144 (i.e., extended only toward the central axis of the mating body 132), upon withdrawal of the male threaded fastener 200 in the axial direction of the second channel 108, the free ends of the cantilever arms 142 would likely become lodged between the threads of the male threaded fastener 200 and impede the withdrawal of the male threaded fastener 200.

Referring to fig. 1, 3 and 5, in the illustrated embodiment, the passage wall of the first passage 106 of the mounting nut 102 may be provided with a first internal thread 148, and the adjustment bushing 104 is correspondingly provided with a first external thread 150 that mates with the first internal thread 148 of the mounting nut 102. The first external threads 150 of the adjustment bushing 104 are threaded opposite the second external threads 202 of the externally threaded fastener 200, such that when the externally threaded fastener 200 is threaded into the second channel 108, the adjustment bushing 104 rotates with the externally threaded fastener 200 in the first direction D1 due to the interference fit with the externally threaded fastener 200, and the adjustment bushing 104 will move away from the mounting nut 102. Additionally, with combined reference to FIG. 2, the fastening nut 120 of the mounting nut 102 defines a second internal thread 154 that mates with a second external thread 202 of the externally threaded fastener 200 to effect a threaded connection with the externally threaded fastener 200.

At the time of transportation, the threaded member 128 of the adjustment bushing 104 may be fully threaded into the cylindrical portion 112 of the mounting nut 102, with the adjustment bushing 104 in the reference position and the second passage 108 of the adjustment bushing 104, the first passage 106 of the mounting nut 102, and the fastening nut 120 aligned with one another. In the illustrated embodiment, the shoulder 134 of the adjustment bushing 104 may contact the top end of the cylindrical portion 112 of the mounting nut 102 when the adjustment bushing 104 is in the reference position.

Referring to fig. 3 and 5, after the nut tightening assembly 100 is shipped to an installation site, a portion of the first member 300 may be clamped using the first and second clamping plates 114, 116 of the installation nut 102 to thereby install the nut tightening assembly 100 to the first member 300. Wherein the positions of the first and second members 300 and 400 and the nut fastening assembly 100 are required to be adjusted such that the first fastening hole 302 of the first member 300, the second fastening hole 402 of the second member 400 and the fastening nut 120 of the mounting nut 102 are aligned with each other to allow the externally threaded fastener 200 to be threadedly coupled with the fastening nut 120 through the adjustment bushing 104.

Then, referring to fig. 6 and 7, the externally threaded fastener 200 may be threaded into the second passage 108 and cause the adjustment bushing 104 to rotate such that the adjustment bushing 104 moves away from the mounting nut 102, i.e., toward the second component 400. Thereafter, the externally threaded fastener 200 will be threaded through the second passage 108 into engagement with the fastening nut 120 until the shoulder 134 of the adjustment bushing 104 abuts the second component 400, at which time the second component 400 is clamped between the head 204 of the externally threaded fastener 200 and the shoulder 134 of the adjustment bushing 104. In this way, the fixation of the first member 300 and the second member 400 to each other is achieved.

Referring to fig. 1, the mounting nut 102 may be provided with an abutment portion 156, and the adjustment bushing 104 may be provided with a retaining portion 158, the retaining portion 158 being provided for abutment with the abutment portion 156 to hinder rotation of the adjustment bushing 104 relative to the mounting nut 102 in the first direction D1. Since the mounting nut 102 and the adjustment sleeve 104 are two separately formed components, the adjustment sleeve 104 is typically threaded into the mounting nut 102 for shipping in order to avoid loss of components of the nut tightening assembly 100 during shipping and in order for the nut tightening assembly 100 to be ready for use immediately after shipping to the installation site. By providing the abutting portion 156 and the retaining portion 158, the adjustment sleeve 104 can be prevented from rotating in the first direction D1 relative to the mounting nut 102 and away from the mounting nut 102, thereby preventing the adjustment sleeve 104 from being completely separated from the mounting nut 102 due to vibration during transportation and the like, thereby preventing components of the nut tightening assembly 100 from being lost and facilitating rapid use of the nut tightening assembly 100 in batches. Alternatively, as shown in fig. 1, the retaining portion 158 may be provided for abutting the abutment portion 156 to hinder rotation of the adjustment sleeve 104 relative to the mounting nut 102 in the first direction D1 when the adjustment sleeve 104 is substantially in the reference position.

At least one of the abutment portion 156 and the holding portion 158 may be elastically deformed, and the abutment portion 156 and the holding portion 158 are configured such that: the retaining portion 158 is movable past the abutment 156 when the adjustment bushing 104 is subjected to a torque greater than a torque threshold to allow the adjustment bushing 104 to rotate in the first direction D1 relative to the mounting nut 102, for example, to move from a reference position to an adjustment position to secure the first and second components 300 and 400 to one another at a spacing. As such, the adjustment bushing 104 may be rotated in the first direction D1 by applying a torque to the adjustment bushing 104 when the nut tightening assembly 100 is transported to an installation site so that the nut tightening assembly 100 may accommodate the spacing between the first member 300 and the second member 400.

Optionally, the adjustment sleeve 104 is configured such that the torque experienced by the adjustment sleeve 104 due to the interference fit with the externally threaded fastener 200 when the externally threaded fastener 200 is threaded into the second passage 108 is greater than the aforementioned torque threshold. As such, when the nut-fastening assembly 100 is used at an installation site, a torque greater than a torque threshold may be applied to the adjustment bushing 104 by threading the male threaded fastener 200 into the second channel 108 to allow the retention portion 158, which would otherwise be restrained by the abutment 156 when the nut-fastening assembly 100 is shipped, to move past the abutment 156, thereby allowing the adjustment bushing 104 to rotate in the first direction D1 away from the mounting nut 102 to secure the first and second components 300, 400 at a distance.

Referring to fig. 3, the abutment portion 156 may include a first section 160 extending from the first clamp plate 114 of the mounting portion 110 substantially in the axial direction of the cylindrical portion 112 and a second section 162 extending from the first section 160 toward the cylindrical portion 112. Optionally, the first and second sections 160, 162 may be substantially perpendicular. The retaining portion 158 may have a first section 164 extending from the shoulder 134 of the adjustment bushing 104 generally in the axial direction of the mating body 132 and a second section 166 extending from the first section 164 away from the mating body 132 at an obtuse angle to the first section 164. When the adjustment sleeve 104 is received within the first channel 106 of the mounting nut 102, the retaining portion 158 of the adjustment sleeve 104 and the abutment portion 156 of the mounting nut 102 each bend in different directions, which enables the retaining portion 158 to move past the abutment portion 156 with relative ease when the nut tightening assembly 100 is used at the installation site.

Referring to fig. 1 and 6, the abutment 156 may also have a chamfer 168 (see fig. 6) to guide the movement of the retention portion 158 past the abutment 156. In the illustrated embodiment, the chamfer 168 is located at a side edge of the abutment 156. When the adjustment bushing 104 is subjected to a torque in the first direction D1, the chamfer 168 may guide the movement of the retention portion 158, which would otherwise be on one side of the abutment portion 156, onto a side surface of the abutment portion 156 facing away from the cylindrical portion 112, after which the retention portion 158 may continue to move past the abutment portion 156.

Referring to fig. 1 and 2, the adjustment sleeve 104 may further be provided with a stop 172, the stop 172 being arranged for abutment with the abutment 156 to prevent rotation of the adjustment sleeve 104 relative to the mounting nut 102 from the reference position in a second direction D2 opposite the first direction D1. In this manner, when, for example, the threaded member 128 of the adjustment bush 104 is completely screwed into the cylindrical portion 112 of the mounting nut 102 (i.e., the adjustment bush 104 is brought into the reference position) for transportation, the adjustment bush 104 can be prevented from being rotated in the second direction D2 by the action of external factors such as vibration, that is, the adjustment bush 104 is prevented from being further screwed into the cylindrical portion 112 of the mounting nut 102 to cause the adjustment bush 104 to be locked.

Referring to fig. 1 and 3, in the illustrated embodiment, the stop 172 may extend from the shoulder 134 toward the mating body 132 at an acute angle to the shoulder 134 such that the stop 172 may abut the abutment 156 in a crossed manner, thereby effectively preventing the adjustment bushing 104 in the reference position from rotating in the second direction D2.

In the illustrated embodiment, the retaining portion 158 may be disposed adjacent to and spaced apart from the stop 172 to allow the abutment 156 to be at least partially between the retaining portion 158 and the stop 172 when the adjustment sleeve 104 is in the reference position. In this way, before shipping the nut tightening assembly 100, the adjustment bushing 104 can be rotated in the second direction D2 into the cylindrical portion 112 of the mounting nut 102 for the mounting nut 102 and the adjustment bushing 104 that were originally separated from each other, during which the retaining portion 158 of the adjustment bushing 104 will first contact the abutment portion 156 of the mounting nut 102, the retaining portion 158 can be made to pass over the abutment portion 156 by applying an appropriate torque to the adjustment bushing 104, and the abutment portion 156 will be partially located between the retaining portion 158 and the stop portion 172. Then, if the adjustment sleeve 104 continues to be rotated in the second direction D2, the stop 172 of the adjustment sleeve 104 will abut the abutment 156 of the mounting nut 102 to prevent the adjustment sleeve 104 from locking. Also, during transportation, since the abutting portion 156 of the mounting nut 102 is partially located between the holding portion 158 and the stopping portion 172 of the adjustment sleeve 104, the holding portion 158 and the stopping portion 172 can cooperate with the abutting portion 156 to prevent the adjustment sleeve 104 from rotating to separate from or lock with the mounting nut 102 due to external vibration or the like.

It should be understood that the various components and features described herein may be made from a variety of materials, including but not limited to polymers, rubbers, metals, and other suitable materials or combinations of materials known to those skilled in the art. The embodiments shown in fig. 1 to 7 only show the shape, size and arrangement of the various optional components of the nut fastening assembly according to the present invention, however, they are merely illustrative and not restrictive, and other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present invention.

The technical content and technical features of the present invention have been disclosed above, but it should be understood that various changes and modifications of the concept disclosed above can be made by those skilled in the art under the inventive concept of the present invention, and all fall within the scope of the present invention. The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims (18)

1. A nut tightening assembly adapted to be threadedly connected with an externally threaded fastener to secure first and second members to each other at a spacing, the nut tightening assembly comprising:

a mounting nut adapted to be mounted to the first component and adapted to be threadably connected with the externally threaded fastener, and the mounting nut including a first passage;

an adjustment bushing configured to be received within and operably engaged with the first channel such that the adjustment bushing is movable in an axial direction of the first channel from a reference position away from the mounting nut to an adjustment position while rotating in a first direction relative to the mounting nut, the adjustment bushing including a second channel that allows passage of the externally threaded fastener and being configured to interference fit with the externally threaded fastener when the externally threaded fastener is threaded into the second channel to rotate with the externally threaded fastener in the first direction relative to the mounting nut;

wherein the mounting nut is provided with an abutment portion and the adjustment bush is provided with a retaining portion provided for abutment with the abutment portion to hinder rotation of the adjustment bush relative to the mounting nut in the first direction.

2. The nut tightening assembly according to claim 1, wherein at least one of the abutment portion and the holding portion is elastically deformable, and the abutment portion and the holding portion are configured such that: the retaining portion is movable past the abutment to allow rotation of the adjustment bushing relative to the mounting nut in the first direction when the adjustment bushing is subjected to a torque greater than a torque threshold.

3. The nut fastening assembly of claim 2 wherein the adjustment bushing is configured such that a torque experienced by the adjustment bushing due to interference with the externally threaded fastener when the externally threaded fastener is threaded into the second passage is greater than the torque threshold.

4. The nut tightening assembly of claim 2, wherein the abutment has a chamfer to guide the retention portion to move past the abutment.

5. The nut tightening assembly according to any one of claims 1 to 4, characterized in that the adjustment bushing is further provided with a stop portion that is provided for abutment with the abutment portion to prevent rotation of the adjustment bushing relative to the mounting nut from the reference position in a second direction that is opposite to the first direction.

6. The nut tightening assembly of claim 5, wherein the retention portion is disposed adjacent to and spaced from the stop portion to allow the abutment portion to be at least partially between the retention portion and the stop portion when the adjustment sleeve is in the reference position.

7. The nut fastening assembly of claim 5 wherein the mounting nut includes a mounting portion adapted to be mounted to the first component and adapted to be threadably connected with the externally threaded fastener and a cylindrical portion disposed on the mounting portion and defining the first passage.

8. The nut tightening assembly according to claim 7, wherein the abutment portion includes a first section extending from the mounting portion generally in an axial direction of the cylindrical portion and a second section extending from the first section toward the cylindrical portion.

9. The nut tightening assembly according to claim 7, wherein the adjustment bushing includes a cylindrical threaded member adapted to be operably engaged with the first passage and a mating member disposed at least partially within the threaded member, the mating member defining the second passage and being adapted to be in interference fit with the externally threaded fastener when the externally threaded fastener is threaded into the second passage.

10. The nut tightening assembly of claim 9, wherein the mating member includes a cylindrical mating body and a shoulder extending radially outward from the mating body.

11. The nut tightening assembly according to claim 10, wherein the retaining portion has a first section extending from the shoulder generally in an axial direction of the mating body and a second section extending from the first section away from the mating body at an obtuse angle to the first section.

12. The nut tightening assembly of claim 10, wherein the stop portion extends from the shoulder toward the mating body at an acute angle to the shoulder.

13. The nut tightening assembly according to claim 10, wherein the mating body includes a cantilevered arm extending from and located inside a circumferential wall of the mating body, the cantilevered arm for interference fit with the externally threaded fastener.

14. The nut tightening assembly of claim 13, wherein the cantilevered arm has a first portion extending from the circumferential wall toward a central axis of the mating body and a second portion extending from the first portion away from the central axis.

15. The nut tightening assembly according to claim 10, wherein a longitudinal end portion of the fitting body is provided with a stopper lug, and a longitudinal end portion of the threaded member is provided with a stopper groove, the stopper lug being capable of being bent outward to engage with the stopper groove after the fitting body is inserted into position in the threaded member to prevent relative movement of the fitting member and the threaded member.

16. The nut tightening assembly according to claim 7,

the mounting portion includes a first clamping plate, a second clamping plate, and a connecting section, the first clamping plate and the second clamping plate opposing each other and being connected at one end by the connecting section to form a clamping space therebetween for at least partially receiving and clamping the first component,

the cylindrical portion is provided on the first clamping plate, the second clamping plate includes a plate body and at least one side arm connected to the plate body and spaced apart at least partially, the plate body is provided with a fastening nut for threaded connection with the externally threaded fastener,

wherein the side arms are connected with the first clamping plate by the connecting sections and suspend the plate body to be movable towards and/or away from the first clamping plate.

17. The nut fastening assembly of claim 16 wherein the first and second clamping plates are connected by two connecting sections, the second clamping plate including two side arms on either side of the plate body, each side arm connected to the first clamping plate by a respective connecting section, wherein the plate body includes a free end that extends between the two connecting sections.

18. The nut fastening assembly of any one of claims 1 to 4 wherein the channel wall of the first channel of the mounting nut is provided with an internal thread and the adjustment bushing is correspondingly provided with an external thread that mates with the internal thread of the mounting nut; wherein the external thread of the adjusting bush is opposite to the external thread of the external thread fastener.

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