Tolerance adjusting device for automobile

Abstract

A tolerance adjusting device for an automobile comprises a spiral assembly, a clamping sleeve and a friction plate. The spiral assembly comprises a bottom plate, a bolt, a clamping protrusion and a nut. The clamping sleeve comprises a sleeve body, an elastic pin, a clamping groove, a first clamping block and a second clamping block. The second clamping block is arranged on the inner wall of the cylinder body and comprises a guide face and an abutting face. Compared with the prior art, the spiral assembly has the advantages that the clamping sleeve is arranged and used for being inserted into a hole of a sheet metal part or equipment, positioning of the spiral assembly is achieved, a fastener can be conveniently inserted, and assembling efficiency is guaranteed. And meanwhile, a first clamping block and a second clamping block are arranged, so that the clamping sleeve and the spiral assembly are limited after being assembled and cannot be separated at will, it is guaranteed that no part is lost in the part transportation process, and the influence on functions caused by deformation and bending of plastic parts in the transportation and storage process is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and particularly relates to a tolerance adjusting device for an automobile. Background Art

[0002] When an automobile is assembled, the precision of the connection between its various components and clamping plates has a very important impact on the quality and safety of the vehicle body. Uneven seams not only directly affect the appearance, but also cause noise, air leakage, water leakage, etc. Moreover, in some cases, it will even affect the normal use function. There are certain tolerance requirements for the assembly of the vehicle body, and there will be certain errors in the sheet metal parts and components themselves. Therefore, it is necessary to ensure that the tolerance meets the requirements.

[0003] In order to ensure that the installed tolerance meets the technical requirements, it is usually adjusted through tolerance nuts. However, the support of the tolerance adjuster on the market is prone to looseness during transportation, and the height after the adjuster is assembled cannot be guaranteed.

[0004] For example, a tolerance adjuster bracket and an automobile door handle tolerance adjuster disclosed in Chinese Utility Model CN202122251385.7. Among them, the tolerance adjuster bracket includes: a bracket body with a central hole in the center; an elastic buckle arranged on the bracket body; a positioning mechanism including a cylindrical pin and a connecting part; the length direction of the cylindrical pin is parallel to the axis of the bracket body. Based on the setting of the positioning mechanism, the cylindrical pin cooperates with the positioning pin hole on the door handle base to make an initial positioning between the tolerance adjuster and the door handle base. Before installing the bolt, this positioning constrains the center of the tolerance adjuster to the center position in the designed state. This makes it easier to align the center of the welding nut when installing the bolt, ensuring the assembly efficiency. At the same time, the elastic connecting part enables the positioning mechanism not to limit the movement of the buckle on the tolerance adjuster bracket in the slot on the door handle base, and does not affect the adjustment range of the tolerance adjuster.

[0005] By setting an elastic connecting part to fix the tolerance adjuster so that it will not move after being snapped into the device, there are still the following defects:

[0006] ① The connection between the elastic connecting piece made of plastic and the nut is not fixed, and it is only simply sleeved on the nut, and it is very likely to become detached during transportation, resulting in the loss of parts;

[0007] ② The clamping feet for limiting are separately extended from the elastic connecting piece and are made of plastic, and the strength is not high. It may be deformed or bent due to impacts during transportation, resulting in the loss of its functionality. Utility Model Content

[0008] In view of this, the utility model provides a tolerance adjusting device for an automobile to solve the above technical problems.

[0009] A tolerance adjustment device for an automobile, comprising a screw assembly, a clamping sleeve clamped on the screw assembly, and a friction plate disposed within the screw assembly. The screw assembly includes a base plate, a bolt disposed on the base plate, a clamping protrusion disposed on the base plate, and a nut sleeved on the bolt. The bolt is a hollow columnar structure disposed on the base plate, with an external thread provided on the outer wall and a friction plate slot provided on the inner wall. The external thread is a left-handed thread. The friction plate slot is disposed within the cavity of the bolt's axis and is located on the side close to the base plate. The nut is threadedly connected to the bolt and is provided with an internal thread that is a left-handed thread. The nut is provided with a flange nut. The flange nut is disposed at one end of the nut and is located on the side away from the base plate when the nut is screwed onto the bolt. The clamping sleeve includes a barrel body, a pair of elastic pins disposed on the barrel body, a slot disposed on the barrel body, a pair of first clamping blocks disposed on the inner wall of the barrel body, and a plurality of second clamping blocks disposed on the inner wall of the barrel body. The slot is a notch disposed on the side wall of the barrel body and is located at the end of the slot away from the elastic pins, and an elastic flap is provided as a separator. The first clamping blocks are disposed on the inner side of the elastic pins facing the axis. The second clamping blocks are disposed on the inner wall of the barrel body and include a guiding surface facing the insertion direction of the clamping sleeve and a resisting surface facing the extraction direction of the clamping sleeve. The friction plate is a sleeve inserted into the screw assembly.

[0010] Further, the base plate and the bolt are integrally formed and are located on one side of the bolt. It is a circular plate-like structure, and the plane where the base plate is located is perpendicular to the axial direction of the bolt.

[0011] Further, the shape and size of the friction plate slot are tightly fitted with the friction plate, and the diameter of the circumscribed circle of the friction plate slot is larger than the diameter of the cavity of the bolt.

[0012] Further, the clamping protrusion is disposed on the base plate and is located on the side close to the bolt. It is a rectangular protrusion with chamfers provided at the edges.

[0013] Further, the outer shape of the flange nut is polygonal.

[0014] Further, the cross-sectional shape of the outer wall of the barrel body is cylindrical, and the cross-sectional shape of the inner wall is polygonal and is the same as the cross-sectional shape of the outer wall of the flange nut.

[0015] Further, the elastic pin is arranged at one end of the cylinder body and is on the side away from the bottom plate when sleeved on the spiral assembly. One end of the elastic pin is fixed on the cylinder body, and the other end extends in a direction away from the cylinder body. When extending, it is along the axial direction of the cylinder body and is bent into a V shape at the end.

[0016] Further, the first clamping block is a triangular block with a right-angled triangle cross-section, and the hypotenuse faces the extending direction of the elastic pin. One right-angled side is arranged on the elastic pin, and the other right-angled side is arranged on the edge of the port of the cylinder body and partially extends and exposes at the edge of the central cavity of the cylinder body.

[0017] Further, the friction plate is a cylindrical structure with a rounded rectangular cross-section and is inserted into the friction plate slot.

[0018] Compared with the prior art, the tolerance adjustment device for an automobile provided by the present utility model realizes the compensation of tolerance by setting the nut and bolt with left-handed threads to disengage the threads when the fastener is inserted into the bolt, so that the length of the part becomes longer. At the same time, by setting the clamping sleeve, it is used to be inserted into the hole of the sheet metal part or the device to realize the positioning of the spiral assembly, which is convenient for the fastener to be inserted and ensures the assembly efficiency. At the same time, by setting the first clamping block and the second clamping block, the clamping sleeve and the spiral assembly are limited after being assembled and cannot be separated randomly, ensuring that no parts are missing during the transportation of the parts. Finally, by setting the clamping groove, it is used to limit the position of the clamping sleeve in the circumferential direction. At the same time, compared with the prior art, the deformation and bending of the plastic parts during transportation and storage are greatly reduced, which affects the function. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a tolerance adjustment device for an automobile provided by the present utility model.

[0020] Figure 2 is Figure 1 an exploded schematic diagram of the exploded structure of the tolerance adjustment device for an automobile.

[0021] Figure 3 is Figure 1 a top view schematic diagram of the tolerance adjustment device for an automobile.

[0022] Figure 4 is Figure 3 a sectional schematic diagram of the tolerance adjustment device for an automobile on the A-A section. Detailed Embodiments

[0023] The following further details the specific embodiments of the present utility model. It should be understood that the description of the embodiments of the present utility model herein does not limit the protection scope of the present utility model.

[0024] As Figures 1 to 4 shown, it is a schematic structural diagram of a tolerance adjustment device for an automobile provided by the present utility model. The tolerance adjustment device for an automobile includes a screw assembly 10, a clamping sleeve 20 clamped on the screw assembly 10, and a friction plate 30 disposed within the screw assembly 10. It can be conceived that the tolerance adjustment device for an automobile further includes some other functional modules such as sheet metal parts with spacing, fasteners inserted on the screw assembly, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein one by one.

[0025] The screw assembly 10 includes a bottom plate 11, a bolt 12 disposed on the bottom plate 11, a clamping protrusion 13 disposed on the bottom plate 11, and a nut 14 sleeved on the bolt 12.

[0026] The bottom plate 11 is integrally formed with the bolt 12 and is located on one side of the bolt 12. It is a circular plate-like structure, and the plane where the bottom plate 11 is located is perpendicular to the axial direction of the bolt 12, so as to abut against and fix the position of the clamping sleeve 20 sleeved on the screw assembly 10.

[0027] The bolt 12 is a hollow columnar structure disposed on the bottom plate 11. The outer wall is provided with an external thread 121, and the inner wall is provided with a friction plate slot 122. The external thread 121 is a left-handed thread for threaded connection with the nut 14. The friction plate slot 122 is disposed in the cavity of the axis of the bolt 12 and is located on the side close to the bottom plate 11 for the friction plate 30 to be inserted. At the same time, the shape and size of the friction plate slot 122 are in a tight fit with the friction plate 30 with a clearance of 0 or a small clearance, and the outer diameter of the circumscribed circle of the friction plate slot 122 is larger than the diameter of the cavity of the bolt 12 to form a clamping step at the bottom of the friction plate 122 for abutting against the friction plate 30, so that after the friction plate 30 is completely inserted into the friction plate slot 122, it will not be inserted further inward.

[0028] The clamping protrusion 13 is disposed on the bottom plate 11 and is located on the side close to the bolt 12. It is a rectangular protrusion with chamfers at the edges for clamping the clamping sleeve 20 and fixing its position in the circumferential direction so that it will not rotate along the axis.

[0029] The nut 14 is threadedly connected to the bolt 12 and is provided with an internal thread with a left-handed thread so that the nut 14 and the bolt 12 are locked when rotated counterclockwise. The nut 14 is provided with a flange nut 141 which is arranged at one end of the nut 14 and is located on the side away from the bottom plate 11 when the nut 14 is screwed onto the bolt 12, so as to facilitate the engagement with the engagement sleeve 20. The outer shape of the flange nut 141 is polygonal to facilitate screwing the nut 104 onto the bolt 12.

[0030] The engagement sleeve 20 includes a barrel body 21, a pair of elastic pins 22 arranged on the barrel body 21, a slot 23 arranged on the barrel body 21, a pair of first locking blocks 24 arranged on the inner wall of the barrel body 21, and a plurality of second locking blocks 25 arranged on the inner wall of the barrel body 21.

[0031] The cross-sectional shape of the outer wall of the barrel body 21 is cylindrical, and the cross-sectional shape of the inner wall is polygonal and consistent with the cross-sectional shape of the outer wall of the flange nut 141 so as to be sleeved on the nut 14.

[0032] The elastic pins 22 are arranged at one end of the barrel body 21 and are located on the side away from the bottom plate 11 when sleeved on the screw assembly 10. One end of the elastic pin 22 is fixed on the barrel body 21, and the other end extends in a direction away from the barrel body 21, and extends along the axial direction of the barrel body 21 and is bent into a V shape at the end, so as to facilitate the insertion of the engagement sleeve 20 into the hole of the sheet metal part and perform buckling.

[0033] The slot 23 is a notch arranged on the side wall of the barrel body 21 and is located at one end of the slot 23 away from the elastic pin 22, and an elastic flap is provided as a separator so that the position of the engagement protrusion 13 can be fixed in the circumferential direction in the assembled state, and during transportation, based on the limitation of the slot 23 and the engagement protrusion 13, vibration can be prevented from causing the separation of parts.

[0034] The first locking block 24 is arranged on the inner side of the elastic pin 22 facing the axis, and is a triangular block with a right-angled cross-section. The hypotenuse faces the extending direction of the elastic pin 22, one right-angled side is arranged on the elastic pin 22, and the other right-angled side is arranged on the edge of the port of the barrel body 21 and partially extends and exposes at the edge of the central cavity of the barrel body 21. It can be imagined that when the engagement sleeve 20 is sleeved on the screw assembly 10, the first locking block 23 abuts against the flange nut 141, so that the engagement sleeve 20 cannot move easily in the axial direction.

[0035] The second clamping block 25 is arranged on the inner wall of the cylinder body 21 and includes a guiding surface facing the insertion direction of the clamping sleeve 20 and an abutting surface facing the extraction direction of the clamping sleeve 20, so as to play a guiding and abutting role when the clamping sleeve 20 is sleeved on the spiral assembly 10, and cooperate with the first clamping block 24, so that after the clamping sleeve 20 is completely sleeved on the spiral assembly 10, no parts fall off or make noises, which is convenient for transportation.

[0036] The friction plate 30 is a sleeve inserted into the spiral assembly 10 for increasing the friction force. In this embodiment, it is a cylindrical structure with a rounded rectangular cross-section and is inserted into the friction plate slot 122. During use, the friction plate 30 abuts against the fastener inserted into the bolt 12. When the fastener rotates, the bolt 12 rotates under the action of the friction force. Due to the opposite thread directions, the clockwise rotating fastener drives the spiral assembly 10 with a left-handed structure to rotate, so that the nut 14 is rotated away from the bolt 12, thereby increasing the distance from the clamping sleeve 20 to the bottom plate 11 for compensating the tolerance.

[0037] Compared with the prior art, the tolerance adjustment device for an automobile provided by the present utility model realizes the compensation of the tolerance by setting the nut 14 with a left-handed thread and the bolt 12, and the thread is disengaged when the fastener is inserted into the bolt 12, so that the length of the part becomes longer. At the same time, by setting the clamping sleeve 20, it is used to insert into the hole of the sheet metal part or the device to realize the positioning of the spiral assembly 10, which is convenient for the insertion of the fastener and ensures the assembly efficiency. At the same time, the first clamping block 24 and the second clamping block 25 are set, so that the clamping sleeve 20 and the spiral assembly 10 are limited in position after being assembled and cannot be separated at will, ensuring that no parts are missing during the transportation of the parts. Finally, by setting the clamping groove 23, it is used to limit the position of the clamping sleeve 20 in the circumferential direction. At the same time, compared with the prior art, the influence on the function caused by the deformation and bending of the plastic parts during transportation and storage is greatly reduced.

[0038] The above is only a preferred embodiment of the present utility model and is not used to limit the protection scope of the present utility model. Any modification, equivalent replacement or improvement within the spirit of the present utility model is covered by the claims of the present utility model.

Claims

1. A tolerance adjustment device for an automobile, characterized in that: The tolerance adjustment device for automobiles comprises a spiral assembly, a clamping sleeve clamped on the spiral assembly, and a friction plate arranged in the spiral assembly. The spiral assembly comprises a base plate, a bolt arranged on the base plate, a clamping protrusion arranged on the base plate, and a nut sleeved on the bolt. The bolt is a hollow columnar structure arranged on the base plate, with an outer wall provided with an external thread, and an inner wall provided with a friction plate slot. The external thread is a left-handed thread. The friction plate slot is arranged in the cavity of the axis of the bolt and is located on a side close to the base plate. The nut is threadedly connected to the bolt and is provided with an internal thread using a left-handed thread. The nut is provided with a flange nut, and the flange nut is arranged at one end of the nut. When the nut is screwed onto the bolt, it is located on a side away from the base plate. The clamping sleeve comprises a barrel, a pair of elastic pins arranged on the barrel, a clamping groove arranged on the barrel, a pair of first clamping blocks arranged on the inner wall of the barrel, and a plurality of second clamping blocks arranged on the inner wall of the barrel. The clamping groove is a notch arranged on the side wall of the barrel and is located at an end of the clamping groove away from the elastic pin, and an elastic pick is arranged as a partition. The first clamping block is arranged on the inner side of the elastic pin facing the axis, and the second clamping block is arranged on the inner wall of the barrel, including a guiding surface facing the insertion direction of the clamping sleeve and a top surface facing the removal direction of the clamping sleeve. The friction plate is a sleeve inserted into the spiral assembly.

2. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The bottom plate is integrally formed with the bolt and is located on one side of the bolt. It is a circular plate-like structure, and the plane where the bottom plate is located is perpendicular to the axial direction of the bolt.

3. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The shape and size of the friction plate slot are tightly matched with the friction plate, and the diameter of the circumscribed circle of the friction plate slot is larger than the diameter of the cavity of the bolt.

4. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The clamping protrusion is arranged on the bottom plate and is located on a side close to the bolt. It is a rectangular protrusion with a chamfered edge.

5. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The flange nut has a polygonal shape.

6. The tolerance adjustment device for a vehicle according to claim 5, characterized in that: The cross-sectional shape of the outer wall of the barrel is cylindrical, and the cross-sectional shape of the inner wall is a polygon consistent with the cross-sectional shape of the outer wall of the flange nut.

7. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The elastic pin is arranged at one end of the barrel and is located on a side away from the bottom plate when it is sleeved on the spiral assembly. One end of the elastic pin is fixed to the barrel and the other end extends in a direction away from the barrel. When extending, it is along the axial direction of the barrel and is bent into a V shape at the end.

8. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The first clamping block is a triangular block with a right-angled triangle cross-section, with the hypotenuse facing the extension direction of the elastic pin, one right-angled side is arranged on the elastic pin, and the other right-angled side is arranged on the port edge of the barrel body, and partially extends and exposes the edge of the central cavity of the barrel body.

9. The tolerance adjustment device for a vehicle according to claim 1, characterized in that: The friction plate is a cylindrical structure with a rounded rectangular cross section and is inserted into the friction plate slot.

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