Tolerance compensation device and method for assembling and disassembling hidden door handle

Abstract

The invention relates to a tolerance compensation device, which comprises a tolerance adjustment clamping seat, a first through hole, a second through hole and a third through hole, and is characterized in that the tolerance adjustment clamping seat comprises a bottom plate and an elastic clamping jaw connected to the outer side of the bottom; the spiral sleeve is arranged on the bottom plate, a spiral groove is formed in the outer side wall of the spiral sleeve, a containing cavity is formed in the end, away from the bottom plate, of the spiral sleeve, and a second through hole is formed in the bottom of the containing cavity; the bolt assembly comprises a locking nut, a screw rod and a stop head, the screw rod penetrates through the first through hole and the second through hole, the stop head is connected to the end, close to the bottom plate, of the screw rod, the locking nut is in threaded connection to the other end of the screw rod, and rotation resistance exists between the locking nut and the screw rod; a locking part for limiting rotation of the stop head is formed at one end, far away from the spiral sleeve, of the bottom plate; the elastic part is arranged on the spiral sleeve and connected with the locking nut, the invention further provides an assembling and disassembling method of the hidden door handle, the door handle is simply assembled and disassembled by adopting a convenient and detachable structure, and the production and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to an assembly technology of a hidden door handle of an automobile, and in particular to a tolerance compensation device. Background Art

[0002] With the continuous iteration of automotive technology, hidden door handles have gradually become a unique symbol of modern models. It not only enhances the luxury of the appearance, but also demonstrates its value in functionality. The hidden door handles give the vehicle a higher-end visual experience through clever hidden design, while reducing air resistance and improving driving efficiency.

[0003] The installation of hidden door handles may not be properly installed or may be easily misaligned after installation due to size, welding and positioning errors of the vehicle door. Therefore, a tolerance compensation component is required to compensate for the installation tolerance of the hidden door handles.

[0004] At present, the door handle assembly of the hidden door handle is embedded in the vehicle door. Generally, each door handle assembly is fixed on the reinforcement plate of the vehicle door with at least three tolerance adjusters (also known as tolerance compensators) with all-round adjustment. After installation, the door handle needs to be popped out electrically or pressed to be exposed.

[0005] In the prior art, the tolerance compensator generally includes a base, a retaining ring, a threaded sleeve, a fastening screw and a mounting head. Except for the fastening screw, the rest of the parts are made of plastic material. Plastic material will creep in a high temperature environment, resulting in gaps between these components, so that the compensator will produce torque attenuation after long-term use, and these components can no longer be clamped by bolts and nuts. In addition, the structure requires welding of fixing nuts inside the vehicle door to ensure the stable installation of the fastening screw. In addition, in the prior art, since the nuts are fixed inside the vehicle door, the door handle assembly needs to be disassembled for maintenance and disassembly, which greatly increases the difficulty and time of disassembly. Summary of the invention

[0006] Based on the above description, the present invention provides a method to solve the technical problems in the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: The tolerance adjustment base comprises a bottom plate and an elastic claw connected to the outer side of the bottom, wherein a first through hole is formed on the bottom plate; A spiral sleeve is arranged on the bottom plate, the outer side wall of the spiral sleeve is formed with a spiral groove, an end of the spiral sleeve away from the bottom plate is formed with a receiving cavity, and a second through hole is formed at the bottom of the receiving cavity; A bolt assembly, comprising a locking nut, a screw rod and a stop head, wherein the screw rod is arranged to penetrate the first through hole and the second through hole, the stop head is connected to one end of the screw rod close to the bottom plate, the size of the stop head is larger than the size of the first through hole, the locking nut is threadedly connected to the other end of the screw rod, there is a rotation resistance between the locking nut and the screw rod, and the end of the bottom plate away from the spiral sleeve forms a locking portion for limiting the rotation of the stop head; An elastic member is arranged on the spiral sleeve and connected to the locking nut, and is used for elastically pressing the spiral sleeve.

[0008] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The tolerance compensation device provided by the present application passes through the installation hole on the door reinforcement plate corresponding to the stop head contour through the stop head. When the locking nut is rotated, the locking nut drives the screw to rotate due to the rotational resistance between the locking nut and the screw. When the stop head is limited by the locking part, the screw cannot rotate and reaches the pre-tightening position. At this time, the spiral sleeve can be properly adjusted so that the spiral sleeve is installed in a suitable position, and then the locking nut is continued to be rotated. The locking nut and the screw rotate relative to each other, and the locking nut moves in the axial direction of the screw to squeeze the elastic part, and then the spiral sleeve is tightened to ensure that it is installed stably and cannot be moved. The tolerance compensation device of the present application is easy to assemble and disassemble. It only needs to drill holes in the door reinforcement plate, and there is no need to install fixing nuts on the door, which greatly improves the installation and disassembly efficiency.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the elastic member includes a pad and a spring sheet, the pad is arranged on the bottom plane of the accommodating cavity, the screw passes through the pad, the pad completely covers the second through hole, the spring sheet is arranged between the locking nut and the pad, the pad is a steel structural member, and the spring sheet is made of stainless steel.

[0011] Furthermore, the spring sheet includes a support ring and at least three elastic legs, the locking nut abuts against the support ring, the elastic legs are evenly spaced around the axial direction of the support ring, and the extension direction of the elastic legs is consistent with the radial direction of the support ring in the transverse direction and consistent with the axial direction of the screw in the longitudinal direction, so that the support ring and the plurality of elastic legs form a trumpet-shaped structure.

[0012] Furthermore, a connection between the elastic leg and the support ring forms a curved portion protruding from the surface of the support ring, and an end of the elastic leg away from the support ring forms a flange, and the contact between the flange and the pad is an arc surface or a smooth curved surface.

[0013] Furthermore, the locking nut is provided with a self-locking structure or a resistance glue is provided between the locking nut and the screw.

[0014] Furthermore, the locking portion includes a locking platform protruding from the end surface of the base plate, the outer contour of the locking platform is consistent with the outer contour of the stop head, and a locking groove is formed on the end surface of the locking platform. The locking groove is configured so that when the stop head is rotated by a predetermined angle, the outer contour of the stop head is adapted to the locking groove and at least part of the stop head protrudes from the locking groove, and the outer contour of the stop block is one of a square, an equilateral triangle, and an ellipse.

[0015] Furthermore, at least one stop convex point is formed on the end surface of the locking platform, and a positioning stop groove matched with the stop convex point is formed on the end surface of the stop head, and rounded corners are formed on both sides of the positioning stop groove.

[0016] Furthermore, the screw rod has stop wings formed on opposite sides of the portion corresponding to the first through hole, and the first through hole has stop grooves extending outwardly on opposite sides to form a predetermined angle, and the stop wings are arranged in the stop grooves in a one-to-one correspondence.

[0017] Furthermore, the number of the elastic claws is two, each of the elastic claws is formed by a combination of two symmetrically arranged elastic claw heads, the elastic claw heads include an elastic rod and an elastic support arm, one end of the elastic rod is connected to the outer side of the base plate, an arc-shaped gap is formed between the elastic rod and the outer side wall of the base plate, the elastic support arm is connected to the other end of the elastic rod, the elastic support arm extends in the axial direction of the first through hole, and the elastic support arm and the spiral sleeve are located on the same side of the base plate.

[0018] The present application also discloses a method for assembling and disassembling a hidden door handle, which is used to install the hidden door handle in a matching long hole of a vehicle door outer panel, wherein the hidden door handle is pre-installed with at least two tolerance compensation devices as described above, and a vehicle door reinforcement plate is connected to the vehicle door outer panel, and a mounting hole is formed on the vehicle door reinforcement plate, and the outer contour of the mounting hole is consistent with the outer contour of the stop head, and the assembly and disassembly method includes two processes: assembly and disassembly; The assembly process includes: Align the stopper head with the mounting hole of the door reinforcement plate and insert it into the mounting hole; Rotate the locking nut until the stop head and the locking part are limited in rotation. Adjust the relative position of the door handle and the long hole of the door outer panel; Rotate the locking nut so that the locking nut presses the spiral sleeve through the elastic member; The disassembly process includes: Rotate the locking nut to reduce the pressure of the locking nut on the elastic member; When rotational loss occurs, pull out the lock nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic cross-sectional structure diagram of a tolerance compensation device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a tolerance adjustment holder in an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of the tolerance adjustment socket in another perspective in an embodiment of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the spiral sleeve in the embodiment of the present application; Figure 5 This is a schematic diagram of the three-dimensional structure of the bolt assembly in the embodiment of the present application; Figure 6 This is a schematic diagram of the assembly state of the tolerance compensation device according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0022] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90° or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0023] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0024] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0025] like Figure 1 As shown, the present application provides a tolerance compensation device, which includes: a tolerance adjustment socket 10, a spiral sleeve 20, a bolt assembly 30 and an elastic member 40.

[0026] Among them, Figure 2 As shown, the tolerance adjustment base 10 includes a bottom plate 11 and an elastic claw 12 connected to the outer side of the bottom 11 , and a first through hole 11 a is formed on the bottom plate 11 .

[0027] like Figure 4 As shown, the spiral sleeve 20 is arranged on the bottom plate 11, and a spiral groove 20a is formed on the outer wall of the spiral sleeve 20. A receiving cavity 20b is formed at the end of the spiral sleeve 20a away from the bottom plate 11, and a second through hole 20c is formed at the bottom of the receiving cavity 20b. The first through hole 11a and the second through hole 20c are coaxially arranged.

[0028] like Figure 5 As shown, the bolt assembly 30 includes a locking nut 31, a screw rod 32 and a stop head 33. The screw rod 32 is inserted through the first through hole 11a and the second through hole 20c. The stop head 33 is connected to one end of the screw rod 32 close to the base plate 11. The size of the stop head 33 is larger than the size of the second through hole 20c, so that the stop head 33 will not fall out of the second through hole 20c. The locking nut 31 is threadedly connected to the other end of the screw rod 32.

[0029] Among them, there is a rotation resistance between the locking nut 31 and the screw 32. When the rotation resistance of the screw 32 is less than the rotation resistance, the locking nut 31 drives the screw 32 to rotate synchronously. When the rotation resistance of the screw 32 is greater than the rotation resistance, relative rotation is formed between the locking nut 31 and the screw 32.

[0030] As an optional embodiment, a self-locking structure can be formed on the locking nut 31 to form a self-locking anti-loosening nut, for example: a certain part of the locking nut 31 is deformed to be non-circular, so that the threaded hole is changed from a circle to an approximately elliptical or polygonal shape, or the upper end of the nut is slotted and deformed to change the threaded hole to an approximately circular or non-circular shape with a slightly smaller diameter. When the external thread on the screw 32 is screwed into the non-circular threaded hole of the locking nut 31, the friction force generated by the interference fit prevents the locking nut 31 and the screw 32 from rotating relative to each other. Only when the resistance to the rotation of the screw 32 is greater than the friction force, the locking nut 31 and the screw will rotate relative to each other.

[0031] In some other optional embodiments, a damping block of non-metallic insert nature, such as a nylon block, is embedded in the threaded hole of the locking nut 31. When the external thread of the screw 32 is pushed in, the nylon block is destroyed and fills the gap in the thread matching, greatly increasing the resistance during winding, constituting a rotational resistance, and playing a role in preventing loosening and locking. Only when the resistance to the rotation of the screw 32 is greater than the resistance constituted by the nylon block, relative rotation will occur between the locking nut 31 and the screw.

[0032] In other optional embodiments, nylon glue can be attached to the thread surface of the locking nut 31, so that during the locking process, the nylon glue is squeezed to generate a strong reaction force, which greatly increases the friction between the thread teeth. Similarly, relative rotation will only occur between the locking nut 31 and the screw when the resistance to the rotation of the screw 32 is greater than the friction force.

[0033] A locking portion for limiting the rotation of the stop head 33 is formed at one end of the base plate 10 away from the spiral sleeve 20. When the stop head 33 is limited by the locking portion, the rotation of the screw rod 32 is also restricted, thereby forming a resistance much greater than the above-mentioned rotation resistance. At this time, when the locking nut 31 is rotated again, the locking nut 31 will rotate relative to the screw rod 32.

[0034] The above-mentioned setting of rotation resistance and locking part can effectively realize that in the early stage of rotation, the screw 32 rotates with the locking nut 31, and then realizes the position rotation of the stop head 33, so that the spiral sleeve 20 is pre-tightened, and then, the position of the spiral sleeve 20 is adjusted to be adjusted to a suitable position within the tolerance adjustment range, and then, the locking nut 31 is tightened to fix the spiral sleeve 20.

[0035] The elastic member 40 is arranged on the spiral sleeve and connected to the locking nut, and is used for elastically crimping the spiral sleeve. The elastic member 40 is a metal member as a whole. Compared with the plastic members in the prior art, the metal member will not produce creep in a high temperature environment, ensuring that there is no gap between the components, so that the compensator will not produce torque attenuation after long-term use.

[0036] Specifically, the elastic member 40 includes a pad 41 and a spring sheet 42, the pad 41 is arranged on the bottom plane of the accommodating cavity 20b, the screw 32 passes through the pad 41, the pad 41 completely covers the second through hole 20c, the spring sheet 42 is arranged between the locking nut 31 and the pad 41, the pad is a steel structural member, and the spring sheet is made of stainless steel.

[0037] By setting the pad 41, the stability of the spiral sleeve 20 during adjustment is ensured, wherein the second through hole 20c is designed to form a significant diameter difference with the outer diameter of the screw rod 32, thereby ensuring that the spiral sleeve 20 can be stably adjusted within a sufficient tolerance range. Usually, half of the diameter difference between the two is the tolerance range for adjusting the spiral sleeve 20. For example, if the diameter difference between the second through hole 20c and the screw rod 32 is 5 mm, the tolerance adjustment range of the spiral sleeve 20 is ±2.5 mm.

[0038] Preferably, the spring piece 42 includes a support ring 421 and at least three elastic legs 422, the locking nut 31 abuts against the support ring 421, the elastic legs 422 are evenly spaced around the axial direction of the support ring 421, and the extension direction of the elastic legs 422 is consistent with the radial direction of the support ring 421 in the transverse direction and consistent with the axial direction of the screw 32 in the longitudinal direction, so that the support ring 421 and the plurality of elastic legs 422 form a trumpet-shaped structure.

[0039] When the locking nut 31 rotates on the screw rod 32 to press the support ring 421 , the elastic legs 422 expand outward, thereby elastically pressing the backing plate 41 and giving the locking nut 31 an upward thrust, so that the stop head 33 is pressed against the locking portion.

[0040] Furthermore, a bending portion 423 protruding from the surface of the support ring 421 is formed at the connection between the elastic leg 422 and the support ring 421. The setting of the bending portion 423 can significantly and effectively reduce the deformation stress of the elastic leg 422 when it is deformed relative to the support ring 421, thereby greatly reducing the risk of elastic failure of the elastic leg 422.

[0041] Furthermore, one end of the elastic leg 422 away from the support ring 421 forms a flange 423 outwardly, and the flange 423 is an arc-shaped surface or a smooth curved surface. The design of the flange 423 can make the contact part of the elastic leg 422 pressing the pad 421 point contact, reduce the contact position, and thereby reduce the adjustment resistance of the spiral sleeve 20 during pre-tightening adjustment.

[0042] Preferably, in the embodiments of the present application, the locking nuts 31 are all hexagonal nuts driven by hexagonal sockets.

[0043] Since the thickness of the spring piece 42 is larger, the spiral sleeve 20 is pressed tighter during initial pre-tightening and the more difficult it is to adjust, therefore, in a preferred embodiment of the present application, the spring piece 42 is an ultra-thin stainless steel sheet with a thickness of 0.05-0.3 mm, and the tolerance adjustment socket 10 and the spiral sleeve 20 are both PP structures.

[0044] In a preferred embodiment of the present application, Figure 3 As shown, the locking portion is a locking platform 111 formed at one end of the base plate 11 away from the spiral sleeve 20, and the outer contour of the locking platform 111 is consistent with the outer contour of the stop head 33. It can be understood that the outer contour of the stop head 33 can be designed to be a square, a triangle or an ellipse according to design requirements. In this embodiment, the square stop head 33 is taken as an example for explanation.

[0045] The height of the locking platform 111 is preferably less than or equal to the thickness of the door reinforcement plate, so as to facilitate the interference and limiting of the stop head 33 with the door reinforcement plate. In the embodiment of the present application, the door reinforcement plate is a steel plate with a thickness of 0.7 mm, and the height of the locking platform 111 is less than or equal to 0.7 mm. In the optional embodiment of the present application, designing the locking platform 111 of a corresponding height according to the thickness of the door reinforcement plate is an adaptive design scheme that can be thought of by technical personnel in this field after understanding the design intent of the present invention. Optionally, the thickness of the door reinforcement plate is generally in the range of 0.7 mm to 3.0 mm as needed, and correspondingly, the height of the locking platform 111 generally corresponds to 0.5 mm to 2.8 mm.

[0046] A locking groove 111a is formed on the end surface of the locking platform 111, and the locking groove 111a is configured so that when the stop head 33 rotates a predetermined angle, the outer contour of the stop head 33 is matched with the locking groove 111a and at least a portion of the stop head protrudes from the locking groove 111a. Specifically, in the present embodiment, a square locking groove 111a is formed on the square locking platform 111. It can be understood that the locking groove 111a is a regular octagon as a whole. When the stop head 33 rotates 45° from the original overlapping position, the four sides of the locking groove correspond to the four sides of the outer contour of the stop head 33, and the position of the corresponding side edges of the stop head 33 extends from the other four sides of the locking groove 111a, and the extended portion is used to form a locking limit with the door reinforcement plate.

[0047] In order to facilitate the return of the stop head 33 from the locking groove 111 a to the initial state for easy disassembly, in the present application, a guiding inclined surface is formed at the edge position of the locking platform 111 corresponding to the locking groove 111 a.

[0048] Preferably, at least one stopping protrusion 112 is formed on the end surface of the locking platform 111. In the present embodiment, there are four stopping protrusions 112, which are respectively arranged at positions close to four vertices on the end surface of the locking platform 111. A positioning stopping groove 33a which is adapted to the stopping protrusion 112 is formed on the end surface of the stop head 33. The design of the stopping protrusion 112 and the positioning stopping groove 33a can prevent the stop head 33 from rotating in the early stage of installation. In order to ensure that the stop head 33 leaves the original position more smoothly when the locking nut 31 is rotated, rounded corners are formed on both sides of the positioning stopping groove 33a.

[0049] In order to effectively limit the rotation angle of the screw 32, after the screw 32 is rotated by a predetermined angle until the stop head 33 cooperates with the locking groove 111a, the locking nut 31 and the screw 32 rotate relative to each other, and the screw 32 forms stop wings 321 on the opposite sides of the portion corresponding to the first through hole 11a, and the opposite sides of the first through hole 11a extend outward to form a limiting groove 11b with a predetermined angle, and the stop wings 321 are arranged one by one in the limiting groove 11b. In the present application, the angular angle of the limiting groove 11b is 45°, thereby limiting the rotation of the screw 32 within an angle range of 45°.

[0050] In the present application, the number of the elastic claws 12 is two, and each of the elastic claws 12 is formed by a combination of two symmetrically arranged elastic claw heads 121, and the elastic claw head 121 includes an elastic rod 1211 and an elastic support arm 1212, one end of the elastic rod 1211 is connected to the outer side of the base plate 11, and an arc-shaped gap is formed between the elastic rod 1211 and the outer side wall of the base plate 11, and the elastic support arm 1212 is connected to the other end of the elastic rod 1211, and the elastic support arm 1212 extends in the axial direction of the first through hole 11a, and the elastic support arm 1212 and the spiral sleeve 20 are located on the same side of the base plate 11.

[0051] The tolerance compensation device provided in the present application is provided with a stop head 33 passing through a mounting hole on the door reinforcement plate corresponding to the contour of the stop head 33, and the screw rod 32 is rotated so that the contours of the stop head 33 and the mounting hole are staggered. Since the spring clip 42 is used to continuously apply a pulling force along the stop head 33 toward the locking nut 31 to the locking nut 31, the stop head 33 is pressed against the door reinforcement plate, thereby achieving the fixation of the tolerance compensation device. When disassembly is required, the locking nut 31 is pressed to separate the stop head 33 and the door reinforcement plate, and then the screw rod 32 is rotated. When the contours of the stop head 33 and the mounting hole correspond, the stop head 33 is withdrawn from the mounting hole under the elastic force of the spring clip 42, thus completing the disassembly. The tolerance compensation device of the present application is easy to assemble and disassemble. It only requires drilling a hole on the door reinforcement plate, and there is no need to install a fixing nut on the door, thereby greatly improving the efficiency of assembly and disassembly.

[0052] Based on the above tolerance compensation device, the present application provides a method for assembling and disassembling a hidden door handle, which is used to install the hidden door handle in a matching long hole in the door outer panel. The hidden door handle is pre-installed with at least two tolerance compensation devices as described above. Figure 1-6 As shown, three tolerance compensation devices are pre-installed on the hidden door handle, a door reinforcement plate 50 is connected to the door outer panel, a mounting hole 50a is formed on the door reinforcement plate 50, and the outer contour of the mounting hole 50a is consistent with the outer contour of the stop head 33, and the assembly and disassembly method includes two parts of assembly and disassembly; The assembly process includes: Align the stopper head 33 with the mounting hole 50a of the door reinforcement plate 50 and insert it into the mounting hole 50a; Rotate the locking nut 31 until the stopper 33 and the locking portion are limited in rotation; Specifically, when the locking nut 31 is initially rotated, due to the rotational resistance of the locking nut 31 and the screw rod 32, the locking nut 31 and the screw rod 32 rotate synchronously, and the stop convex point 112 and the positioning stop groove 33a are separated until the stop head 33 corresponds to the locking groove 111a after rotating 45°. Under the action of the spring piece 42, the stop head 33 and the locking groove 111a cooperate to limit the position. At this time, the pressure on the spiral sleeve 20 is small, and the tolerance position can be adjusted. Therefore, the adjustment steps are as follows: adjust the relative positions of the door handle and the matching long holes of the door outer panel; After the adjustment is completed, the position of the spiral sleeve 20 needs to be fixed, so the locking nut 31 is rotated so that the locking nut 31 presses the spiral sleeve 20 through the elastic member 40, thereby achieving assembly.

[0053] The disassembly process includes: Rotate the locking nut 31 to reduce the pressure of the locking nut 31 on the elastic member 40; The locking nut 31 is rotated in the opposite direction to the assembly direction, and the pressure of the locking nut 31 on the spring sheet is greatly reduced. At this time, due to the setting of the locking groove 111a, the locking nut 31 and the screw 32 rotate relatively; When rotational loss occurs, pull out the lock nut.

[0054] When idle travel occurs, the locking nut 31 drives the screw rod 32 to rotate, so there is no resistance to rotation. The stop head 33 disengages from the locking groove 111a and resets to the initial state of matching with the stop protrusion 112 and the positioning stop groove 33a. At this time, the stop head 33 corresponds to the position of the mounting hole 50a. The locking nut can be directly pulled out to achieve disassembly of the device.

[0055] The tolerance compensation device and the method for assembling and disassembling a hidden door handle provided in the present application use a convenient and detachable structure to achieve simple assembly and disassembly of the door handle, thereby greatly improving production and maintenance efficiency.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tolerance compensation device, characterized in that: include: The tolerance adjustment base comprises a bottom plate and an elastic claw connected to the outer side of the bottom, wherein a first through hole is formed on the bottom plate; A spiral sleeve is arranged on the bottom plate, the outer wall of the spiral sleeve is formed with a spiral groove, an end of the spiral sleeve away from the bottom plate is formed with a receiving cavity, and a second through hole is formed at the bottom of the receiving cavity; A bolt assembly, comprising a locking nut, a screw rod and a stop head, wherein the screw rod is arranged to penetrate the first through hole and the second through hole, the stop head is connected to one end of the screw rod close to the bottom plate, the size of the stop head is larger than the size of the first through hole, the locking nut is threadedly connected to the other end of the screw rod, there is a rotation resistance between the locking nut and the screw rod, and the end of the bottom plate away from the spiral sleeve forms a locking portion for limiting the rotation of the stop head; An elastic member is arranged on the spiral sleeve and connected to the locking nut, and is used for elastically pressing the spiral sleeve.

2. The tolerance compensation device according to claim 1, characterized in that: The elastic member includes a pad and a spring sheet, the pad is arranged on the bottom plane of the accommodating cavity, the screw passes through the pad, the pad completely covers the second through hole, the spring sheet is arranged between the locking nut and the pad, the pad is a steel structural member, and the spring sheet is made of stainless steel.

3. The tolerance compensation device according to claim 2, characterized in that: The spring sheet includes a support ring and at least three elastic legs, the locking nut abuts against the support ring, the elastic legs are evenly spaced around the axial direction of the support ring, and the extension direction of the elastic legs is consistent with the radial direction of the support ring in the transverse direction and consistent with the axial direction of the screw in the longitudinal direction, so that the support ring and the plurality of elastic legs form a trumpet-shaped structure.

4. The tolerance compensation device according to claim 3, characterized in that: The connection between the elastic leg and the support ring forms a curved portion protruding from the surface of the support ring, and the end of the elastic leg away from the support ring forms a flange, and the contact between the flange and the pad is an arc surface or a smooth curved surface.

5. The tolerance compensation device according to any one of claims 1 to 4, characterized in that: The locking nut is provided with a self-locking structure or a resistance glue is provided between the locking nut and the screw.

6. The tolerance compensation device according to any one of claims 1 to 4, characterized in that: The locking portion includes a locking platform protruding from the end surface of the base plate, the outer contour of the locking platform is consistent with the outer contour of the stop head, and a locking groove is formed on the end surface of the locking platform. The locking groove is configured so that when the screw is rotated by a predetermined angle, the outer contour of the stop head is adapted to the locking groove and at least part of the stop head protrudes from the locking groove, and the outer contour of the stop block is one of a square, an equilateral triangle, and an ellipse.

7. The tolerance compensation device according to claim 6, characterized in that: At least one stopping convex point is formed on the end surface of the locking platform, and a positioning stopping groove matched with the stopping convex point is formed on the end surface of the stopping head, and rounded corners are formed on both sides of the positioning stopping groove.

8. The tolerance compensation device according to claim 7, characterized in that: The screw rod has stop wings formed on opposite sides of the portion corresponding to the first through hole. The opposite sides of the first through hole extend outward to form limit grooves with a predetermined angle. The stop wings are arranged in one-to-one correspondence in the limit grooves.

9. The tolerance compensation device according to claim 8, characterized in that: There are two elastic claws, each of which is formed by a combination of two symmetrically arranged elastic claw heads, each of which includes an elastic rod and an elastic support arm, one end of the elastic rod is connected to the outer side of the base plate, an arc-shaped gap is formed between the elastic rod and the outer side wall of the base plate, the elastic support arm is connected to the other end of the elastic rod, the elastic support arm extends in the axial direction of the first through hole, and the elastic support arm and the spiral sleeve are located on the same side of the base plate.

10. A method for assembling and disassembling a hidden door handle, used for installing the hidden door handle in a matching long hole of a vehicle door outer panel, characterized in that: The hidden door handle is pre-installed with at least two tolerance compensation devices according to any one of claims 1 to 9, a door reinforcement plate is connected to the door outer panel, a mounting hole is formed on the door reinforcement plate, the outer contour of the mounting hole is consistent with the outer contour of the stop head, and the assembly and disassembly method includes two parts of assembly and disassembly; The assembly process includes: Align the stopper head with the mounting hole of the door reinforcement plate and insert it into the mounting hole; Rotate the locking nut until the stop head and the locking part are limited in rotation. Adjust the relative position of the door handle and the long hole of the door outer panel; Rotate the locking nut so that the locking nut presses the spiral sleeve through the elastic member; The disassembly process includes: Rotate the locking nut to reduce the pressure of the locking nut on the elastic member; When rotational loss occurs, pull out the lock nut.

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