Dust cover press-fitting system and method

Abstract

The invention relates to the technical field of dustproof sleeve press fitting, in particular to a dustproof sleeve press fitting system and method. The dustproof sleeve press-fitting system comprises a press-fit assembly, a guide assembly and a dustproof sleeve. The guide assembly comprises an expansion pipe and a first guide pipe; the expansion pipe and the first guide pipe are sequentially connected in the axial direction of the first guide pipe. The swing arm assembly comprises an arm seat unit; the arm seat unit comprises an arm seat body, a clamping ring and a swing rod module; the clamping ring is connected with the arm seat body; the dustproof sleeve comprises a first clamping unit, a corrugated pipe and a second clamping unit; the first clamping unit, the corrugated pipe and the second clamping unit are sequentially connected in the axial direction of the corrugated pipe. R3 > R1 > R2; wherein R1 is the maximum outer diameter of the expansion pipe, R2 is the minimum inner diameter of the first clamping unit in a free state, and R3 is the maximum inner diameter of the first clamping unit after the inner diameter of the first clamping unit is enlarged under the action of external force; the first length is smaller than the second length; therefore, the problem that the guide assembly is prone to skew in the installation process of the dustproof sleeve is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dust cover press-fitting, and in particular to a dust cover press-fitting system and method. Background Art

[0002] During the installation of the dust cover, in order to solve the problem of it being prone to skew when installed on the swing arm, a guide assembly is usually used in the prior art to assist in positioning. It works by being mounted on the outside of the extension rod, and by forming a fit between its own inner wall and the outer wall of the extension rod, it provides a guide path for the installation of the dust cover. When the dust cover is installed, the guiding effect of the guide assembly can reduce the direct interference between the dust cover and the swing arm, allowing the dust cover to be more smoothly mounted on the designated position of the swing arm, thereby reducing the risk of the dust cover being skewed due to installation resistance. However, in actual application, when the positioning sleeve is mounted on the outside of the extension rod, it may itself be skewed due to factors such as the fit deviation with the extension rod and the influence of external forces during the installation operation, thereby causing its guiding effect on the dust cover to fail, and it may still cause the dust cover to be installed skewed.

[0003] In the prior art, the relative positional accuracy of the guide assembly and the extension rod directly determines the accuracy of the dust boot installation. When the guide assembly is mounted on the exterior of the extension rod, if there is a radial gap between the two or if strict coaxial positioning is not achieved during installation, the guide assembly is prone to radial deviation or tilt. This skewed condition is directly transmitted to the guided dust boot, causing it to deviate from the preset installation trajectory as it moves along the inner wall of the positioning sleeve, ultimately resulting in a misalignment between the dust boot and the swing arm assembly. Summary of the Invention

[0004] In order to solve the problem that the guide assembly is easily skewed during the installation of the dust cover, the present invention provides a dust cover press-fitting system and method.

[0005] In a first aspect, the present invention provides a dust cover press-fitting system, the dust cover press-fitting system comprising: Press-fit components; The guide assembly includes an expansion tube and a first guide tube; the expansion tube and the first guide tube are sequentially connected along the axial direction of the first guide tube; The swing arm assembly includes an arm base unit; the arm base unit includes an arm base body, a clamping ring, and a swing arm module; the clamping ring is connected to the arm base body; the swing arm module includes a ball head, a clamping column, and an extension column; the ball head, the clamping column, and the extension column are sequentially connected along the axial direction of the clamping column; the ball head is slidably connected to the arm base body; the clamping column passes through the clamping ring; The dust cover comprises a first engaging unit, a bellows, and a second engaging unit; the first engaging unit, the bellows, and the second engaging unit are sequentially connected along the axial direction of the bellows; R3>R1>R2; wherein R1 is the maximum outer diameter of the expansion tube, R2 is the minimum inner diameter of the first engaging unit in a free state, and R3 is the maximum inner diameter of the first engaging unit after the inner diameter is expanded when subjected to an external force; The first length is smaller than the second length; when the first engaging unit is in a free state, the length of the bellows is the first length; in the first working state, the pressing assembly applies pressure to the second engaging unit, and the length of the bellows is the second length; the first working state includes the inner circumferential wall of the first guide tube abutting against the outer circumferential wall of the extension column, and the inner circumferential wall of the first engaging unit abutting against the outer circumferential wall of the expansion tube.

[0006] In some embodiments, the outer diameter of the expansion tube gradually increases from the expansion tube to the first guide tube.

[0007] In some embodiments, the inner circumferential wall of the first engaging unit abuts against the outer circumferential wall of the expansion tube, and when the pressing assembly does not apply pressure to the second engaging unit, the distance from the first engaging unit to the engaging ring is greater than or equal to the maximum length of the bellows when stretched.

[0008] In some embodiments, the outer diameter of the first guide tube gradually increases from the expansion tube to the first guide tube; R4<R2<R5<R3; wherein, R4 is the minimum outer diameter of the first guide tube, and R5 is the maximum outer diameter of the first guide tube.

[0009] In some embodiments, the guide assembly further includes a groove; the groove is recessed from the outer circumferential wall of the first guide tube toward the inner circumferential wall of the first guide tube.

[0010] In some embodiments, the guide assembly further includes a second guide tube; the first guide tube, the expansion tube, and the second guide tube are sequentially connected along the axial direction of the first guide tube; and the radial direction of the second guide tube gradually increases from the expansion tube to the first guide tube; R5<R2; wherein R5 is the maximum diameter of the second guide tube.

[0011] In some embodiments, the pressing assembly includes a substrate and a pressing unit; the pressing unit includes a first pressing sleeve and a second pressing sleeve; the first pressing sleeve is connected to the substrate; the second pressing sleeve is slidably connected to the first pressing sleeve; the second pressing sleeve is arranged in the space surrounded by the first pressing sleeve; the second pressing sleeve moves along the central axis of the second pressing sleeve; the first pressing sleeve is used to drive the second clamping unit; and the second pressing sleeve is used to drive the first clamping unit.

[0012] In some embodiments, the pressing assembly further includes a clamping unit; the clamping unit is connected to the substrate; the clamping unit applies a force to the second clamping unit to make the second clamping unit fit with the first pressing sleeve.

[0013] In a second aspect, the present invention provides a dust boot press-fitting method, which is applied to any of the dust boot press-fitting systems described in the first aspect. The dust boot press-fitting method includes: Based on the triggering of the press-fitting instruction, the press-fitting assembly drives the dust cover to move to the first state; wherein the first state includes the first engaging unit abutting against the expansion tube, and the bellows and the second engaging unit are respectively sleeved on the outer circumference of the first guide tube; The pressing assembly drives the second clamping unit to move along the direction from the expansion tube to the first guide tube until the second clamping unit is connected to the outer peripheral side of the clamping ring; wherein, during the movement of the second clamping unit, the first clamping unit drives the expansion tube to move along the radial direction of the expansion tube; Based on the second engaging unit being connected to the outer peripheral side of the engaging ring, the pressing assembly drives the first engaging unit to move along the direction from the expansion tube to the first guide tube; The press-fitting is completed based on the connection between the first engaging unit and the outer peripheral side of the extension column.

[0014] In some embodiments, the pressing assembly drives the second engaging unit to move along the direction from the expansion tube to the first guide tube until the second engaging unit is connected to the outer peripheral side of the engaging ring, comprising: The pressing assembly drives the second engaging unit to move along the direction from the expansion tube to the first guide tube until the second engaging unit is in a second state; wherein the second state includes the second engaging unit abutting against the outer peripheral surface of the engaging ring away from the arm base body; The pressing assembly drives the second locking unit to move along the direction from the expansion tube to the first guide tube from the second state to the second locking unit being connected to the outer peripheral surface of the locking ring; wherein, during the process of the second locking unit moving from the second state to the second locking unit being connected to the outer peripheral surface of the locking ring, the first locking unit is in a free state.

[0015] In order to solve the problem that the guide assembly is easily skewed during the installation of the dust cover, the present invention has the following advantages: By applying pressure to the second engaging unit of the dust cover through the pressing assembly, the length of the bellows changes from the first length to the second length (in the first working state). At this time, the inner circumferential wall of the first engaging unit abuts against the outer circumferential wall of the expansion tube in the guide assembly, and because R3>R1>R2, the first engaging unit can apply pressure to the expansion tube, and at the same time, the inner circumferential wall of the first guide tube abuts against the outer circumferential wall of the extension column of the swing arm assembly, which can realize the position correction of the guide assembly (expansion tube, first guide tube) to avoid it from being skewed, thereby ensuring the accurate guidance of the dust cover by the guide assembly, and finally solving the problem of the skewed installation of the dust cover due to the skewness when the guide assembly is set on the outside of the extension column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a dust cover press-fitting system according to an embodiment from a first perspective is shown; Figure 2 A schematic diagram of a second perspective of a dust cover press-fitting system according to an embodiment is shown; Figure 3 A cross-sectional schematic diagram of a dust cover press-fitting system according to an embodiment is shown; Figure 4 Shown Figure 3 A partial enlarged view of the dust cover press-fitting system; Figure 5 A partial schematic diagram of the dust cover press-fitting system of the first embodiment is shown; Figure 6 A partial schematic diagram of a dust cover press-fitting system according to a second embodiment is shown; Figure 7 A partial schematic diagram of a dust cover press-fitting system according to a third embodiment is shown; Figure 8 A schematic diagram of a guide assembly of a dust boot press-fitting system according to an embodiment is shown.

[0017] Figure markings: 10 supporting assembly; 11 supporting seat; 12 positioning seat; 20 pressing assembly; 21 substrate; 22 pressing unit; 221 first pressing sleeve; 222 second pressing sleeve; 223 second driving part; 23 first driving part; 24 clamping unit; 241 clamping head; 242 third driving part; 30 guiding assembly; 31 first guide tube; 32 expansion tube; 33 second guide tube; 34 groove; 40 swing arm assembly; 41 arm seat unit; 411 arm seat body; 412 snap ring; 413 swing arm module; 4131 ball head; 4132 snap column; 4133 extension column; 42 first arm unit; 43 second arm unit; 50 dust cover; 51 first snap unit; 52 bellows; 53 second snap unit. DETAILED DESCRIPTION

[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0019] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise specified, "plurality" means two or more.

[0020] During the installation of the dust boot 50 onto the swing arm assembly 40, the guide assembly 30 is required to ensure smooth assembly of the dust boot 50. The guide assembly 30 includes an expansion tube 32 and a first guide tube 31, which are sequentially connected along the axial direction of the first guide tube 31. The guide assembly 30 is mounted on the exterior of the extension column 4133 of the swing arm module 413 in the swing arm assembly 40. The dust boot 50 includes a first engaging unit 51, a bellows 52, and a second engaging unit 53, which are sequentially connected along the axial direction of the bellows 52. These units must be installed in conjunction with the guide assembly 30 to ensure accurate positioning. However, in actual operation, when the guide assembly 30 is mounted on the exterior of the extension column 4133, it may become skewed due to insufficient fit between the expansion tube 32, the first guide tube 31, and the extension column 4133, or positioning errors during installation. This skewed state directly affects the matching position between the first engaging unit 51 of the dust cover 50 and the guide assembly 30 , making it impossible for the dust cover 50 to be assembled along a preset track during installation, thereby causing the entire dust cover 50 to be installed skewed.

[0021] Example 1: This example discloses a dust cover 50 press-fit system, such as Figure 3 As shown, the dust cover 50 press-fitting system includes a press-fitting assembly 20, a guide assembly 30, a swing arm assembly 40 and a dust cover 50. The press-fitting assembly 20 can apply pressure to the second engaging unit 53 of the dust cover 50 to provide a driving force for the installation of the dust cover 50. Figure 7 As shown, the guide assembly 30 includes an expansion tube 32 and a first guide tube 31. The expansion tube 32 and the first guide tube 31 are sequentially connected along the axial direction of the first guide tube 31.

[0022] The swing arm assembly 40 includes an arm base unit 41. The arm base unit 41 includes an arm base body 411, a snap ring 412, and a swing rod module 413. The snap ring 412 is connected to the arm base body 411. Figure 4 As shown, the swing arm module 413 includes a ball head 4131, a locking column 4132, and an extension column 4133. The ball head 4131, the locking column 4132, and the extension column 4133 are sequentially connected along the axial direction of the locking column 4132. The ball head 4131 is slidably connected to the arm base body 411. Figure 6 As shown, the locking post 4132 passes through the locking ring 412. The arm base 411 provides sliding support for the ball head 4131. The locking ring 412 cooperates with the locking post 4132 to limit the movement range of the swing arm module 413. The extension post 4133 can be connected to other parts of the vehicle during the use of the swing arm assembly 40.

[0023] The dust cover 50 includes a first engaging unit 51, a bellows 52, and a second engaging unit 53. The first engaging unit 51, the bellows 52, and the second engaging unit 53 are sequentially connected along the axial direction of the bellows 52.

[0024] R3>R1>R2. R1 is the maximum outer diameter of the expansion tube 32, R2 is the minimum inner diameter of the first engaging unit 51 in a free state, and R3 is the maximum inner diameter of the first engaging unit 51 after the inner diameter is expanded when subjected to an external force. This allows the first engaging unit 51 to abut against the expansion tube 32 in a free state. Then, when subjected to an external force, the inner diameter can be expanded and tightly abut against the outer circumferential wall of the expansion tube 32, thereby applying a radial force to the expansion tube 32, correcting the position of the guide assembly 30 and preventing it from skewing.

[0025] The first length is smaller than the second length. When the first engaging unit 51 is in a free state, the length of the bellows 52 is the first length. In the first working state, the pressing assembly 20 applies pressure to the second engaging unit 53, and the length of the bellows 52 is the second length. The dust cover 50 pressing system includes a first working state, and the first working state includes the inner circumferential wall of the first guide tube 31 abutting against the outer circumferential wall of the extension column 4133, and the inner circumferential wall of the first engaging unit 51 abutting against the outer circumferential wall of the expansion tube 32. By applying pressure through the pressing assembly 20 to change the length of the bellows 52 from the first length to the second length, the deformation of the bellows 52 can provide the first engaging unit 51 with the following features: Figure 3 The downward force shown allows the first engaging unit 51 to move downward. During the downward movement of the first engaging unit 51, when the angle between the central axis of the first guide tube 31 and the central axis of the extension column 4133 is greater than a set angle (the set angle can be 0° to 3°), the first engaging unit 51 can simultaneously apply a downward force and a radial force to the expansion tube 32. The radial force applied to the expansion tube 32 can reduce the angle between the central axis of the first guide tube 31 and the central axis of the extension column 4133 to less than or equal to the set angle (i.e., the guide assembly 30 is corrected), allowing the dust cover 50 to be smoothly installed on the swing arm assembly 40.

[0026] Furthermore, if Figure 2 As shown, the dust cover 50 press-fitting system further includes a support assembly 10, which includes a support seat 11 and a positioning seat 12. The pressing assembly 20 is connected to the support seat 11, and the positioning seat 12 is connected to the swing arm assembly 40, which is used to fix the position of the swing arm assembly 40 to facilitate the subsequent press-fitting of the dust cover 50. Figure 5As shown, the swing arm assembly 40 includes a first arm unit 42 and a second arm unit 43. One end of the arm base body 411 is fixedly connected to the first arm unit 42, and the other end is fixedly connected to the second arm unit 43, and is used to connect with other components when the swing arm assembly 40 is in operation. The first engaging unit 51 includes a first skeleton ring and a first rubber ring, and the first skeleton ring is connected to the first rubber ring. The first rubber ring is wrapped around the outer circumference of the first skeleton ring. The hardness of the first rubber ring is greater than the hardness of the first rubber ring. The second engaging unit 53 includes a second skeleton ring and a second rubber ring, and the second skeleton ring is connected to the second rubber ring. The second rubber ring is wrapped around the outer circumference of the second skeleton ring. The hardness of the second skeleton ring is greater than the hardness of the second rubber ring.

[0027] Furthermore, the press-fitting system for the dust cover 50 also includes a second working state and an installation-completed state. The second working state includes the first engaging unit 51 being sleeved on the outer circumference of the first guide tube 31, and the inner circumference of the second engaging unit 53 being connected to the outer circumference of the engaging ring 412. The connection may be an interference fit. In this case, the resistance between the first engaging unit 51 and the first guide tube 31 is small, reducing the interference of the resistance between the first engaging unit 51 and the first guide tube 31 on the movement of the inner circumference of the second engaging unit 53 to abut against the outer circumference of the engaging ring 412. The installation-completed state includes the inner circumference of the first engaging unit 51 being connected to the outer circumference of the guide post near the ball head 4131. The connection may be an interference fit. The inner circumference of the second engaging unit 53 is connected to the outer circumference of the engaging ring 412. The connection may be an interference fit. In this case, only the inner circumference of the first engaging unit 51 needs to be connected to the outer circumference of the guide post, and the interference is small.

[0028] Furthermore, the outer diameter of the expansion tube 32 gradually increases from the expansion tube 32 to the first guide tube 31, so that the expansion tube 32 forms a gradual outer peripheral contour. When the first engaging unit 51 abuts against the expansion tube 32 and moves relative to it, the first engaging unit 51 can be guided to move downward smoothly through the gradual change of the outer peripheral wall. At the same time, the radial force of the first engaging unit 51 on the guide assembly 30 is cooperated with to further enhance the correction effect of the guide assembly 30. On the premise of correcting the guide assembly 30, the dust cover 50 can be smoothly installed.

[0029] Furthermore, the inner circumferential wall of the first engaging unit 51 abuts against the outer circumferential wall of the expansion tube 32. When the pressing assembly 20 does not apply pressure to the second engaging unit 53, the distance from the first engaging unit 51 to the engaging ring 412 is greater than or equal to the maximum length of the bellows 52 when stretched, providing sufficient stretching space for the bellows 52. When the pressing assembly 20 applies pressure to the second engaging unit 53, the bellows 52 can be fully stretched. After the bellows 52 is fully stretched, the second engaging unit 53 can more effectively drive the first engaging unit 51 through the bellows 52. At the same time, the rebound force of the fully stretched bellows 52 can cause the first engaging unit 51 to move downward and apply force to the expansion tube 32, thereby better correcting the guide assembly 30 and preventing it from skewing.

[0030] Furthermore, the outer diameter of the first guide tube 31 gradually increases from the expansion tube 32 to the first guide tube 31, so that the first guide tube 31 forms a gradual outer peripheral contour, which facilitates the first engaging unit 51 of the dust cover 50 to move smoothly along its outer peripheral wall and reduces movement resistance.

[0031] R4<R2<R5<R3. R4 represents the minimum outer diameter of the first guide tube 31, and R5 represents its maximum outer diameter. The dimensional relationship of R4<R2 ensures that the minimum outer diameter of the first guide tube 31 is smaller than the minimum inner diameter of the first engaging unit 51 when in its free state, facilitating initial engagement and reducing contact resistance. The dimensional relationship of R2<R5<R3 ensures that the first engaging unit 51 gradually conforms to the outer wall of the first guide tube 31 during movement. Furthermore, because R5<R3 allows the first engaging unit 51 to adapt to changes in outer diameter under external forces, further ensuring the precise installation position of the first guide tube 31.

[0032] Furthermore, if Figure 8 As shown, the guide assembly 30 further includes a groove 34. The groove 34 is recessed from the outer circumferential wall of the first guide tube 31 toward the inner circumferential wall of the first guide tube 31. The groove 34 stores lubricating oil, reducing friction between the first engaging unit 51 and the outer circumferential wall of the first guide tube 31. It also expels air between the dust cover 50 and the first guide tube 31, allowing the first engaging unit 51 to move around the outer circumference of the first guide tube 31 with less resistance.

[0033] Furthermore, the ratio of the length of the groove 34 projected along the radial direction of the first guide tube 31 to the length of the first guide tube 31 projected along the radial direction is greater than 0.8. The ratio of the length of the groove 34 projected along the axial direction of the first guide tube 31 to the length of the first guide tube 31 projected along the axial direction is also greater than 0.8. This ensures that the first engaging unit 51 can be lubricated and vented throughout its entire circumference.

[0034] Furthermore, the guide assembly 30 includes a second guide tube 33. The first guide tube 31, the expansion tube 32, and the second guide tube 33 are sequentially connected along the axial direction of the first guide tube 31. The radial length of the second guide tube 33 gradually increases from the expansion tube 32 to the first guide tube 31, forming a gradual guide surface for the second guide tube 33, providing initial guidance for the installation of the dust cover 50.

[0035] R5<R2. R5 is the maximum diameter of the second guide tube 33, ensuring that the first engaging unit 51 can be smoothly sleeved on the second guide tube 33 in a free state, so that the dust cover 50 can play a guiding role when sleeved on the outer periphery of the second guide tube 33.

[0036] Furthermore, the pressing assembly 20 includes a substrate 21 and a pressing unit 22. The pressing unit 22 includes a first pressing sleeve 221 and a second pressing sleeve 222. The first pressing sleeve 221 is connected to the substrate 21. The second pressing sleeve 222 is slidably connected to the first pressing sleeve 221. The second pressing sleeve 222 is arranged in the space surrounded by the first pressing sleeve 221. The second pressing sleeve 222 moves along the central axis of the second pressing sleeve 222. The first pressing sleeve 221 is used to drive the second clamping unit 53. The second pressing sleeve 222 is used to drive the first clamping unit 51. During the installation process of the dust cover 50, it is passed first. The first pressing sleeve 221 is used to drive the second clamping unit 53. The second press-fit sleeve 222 is used to drive the first engaging unit 51. The first press-fit sleeve 221 drives the second engaging unit 53 downward, stretching the bellows 52. This allows the bellows 52 to exert a force on the first engaging unit 51, driving the guide assembly 30 to calibrate. After the guide assembly 30 is calibrated, the first and second engaging sleeves simultaneously exert a force on the dust cover 50, allowing the dust cover 50 to move toward a position close to the engaging ring 412 and to the second engaging unit 53 for installation. After the second engaging unit 53 is installed, the second press-fit sleeve 222 can independently drive the first engaging unit 51 to move toward the second engaging unit 53 until the first engaging unit 51 is installed, and the dust cover 50 is installed. The substrate 21 provides an installation basis for the pressing unit 22. The sliding connection structure of the first pressing sleeve 221 and the second pressing sleeve 222 can realize independent movement of the two. The first pressing sleeve 221 drives the second locking unit 53, and the second pressing sleeve 222 drives the first locking unit 51, thereby applying force to different parts of the dust cover 50 respectively, meeting different driving requirements during the installation process of the dust cover 50.

[0037] Furthermore, if Figure 3 As shown, the pressing assembly 20 further includes a first driving portion 23 , which is drivingly connected to the pressing unit 22 . The pressing unit 22 includes a second driving portion 223 , which is drivingly connected to the second pressing sleeve 222 .

[0038] Furthermore, if Figure 1 As shown, the pressing assembly 20 further includes a clamping unit 24. The clamping unit 24 is connected to the base plate 21. The clamping unit 24 applies a force to the second engaging unit 53 so that the second engaging unit 53 is fitted with the first pressing sleeve 221. The connection between the clamping unit 24 and the base plate 21 ensures its positional stability. By applying a force to the second engaging unit 53 so that it is fitted with the first pressing sleeve 221, the first engaging unit 51 and the bellows 52 can be confined within the space enclosed by the first pressing sleeve 221 before operation, thereby fixing the dust cover 50 and facilitating the movement of the first pressing sleeve 221 and the clamping unit 24.

[0039] Furthermore, the clamping unit 24 includes a clamping head 241 and a third driving portion 242 . The third driving portion 242 is drivingly connected to the clamping head 241 , so that the clamping head 241 can also clamp the swing arm assembly 40 .

[0040] Example 2: This example discloses a method for press-fitting a dust cover 50. The method is applied to the dust cover 50 press-fitting system of Example 1. The method includes steps S10 to S40. Each step is described in detail as follows: In step S10 , based on the press-fitting instruction, the press-fitting assembly 20 drives the dust cover 50 to move to the first state, wherein the first engaging unit 51 abuts against the expansion tube 32 , and the bellows 52 and the second engaging unit 53 are respectively sleeved on the outer circumference of the first guide tube 31 .

[0041] In step S20, based on the compression assembly 20 driving the dust cover 50 to move to the first state, the compression assembly 20 drives the second engaging unit 53 to move along the direction from the expansion tube 32 to the first guide tube 31 until the second engaging unit 53 is connected to the outer circumference of the engaging ring 412. During the movement of the second engaging unit 53, the first engaging unit 51 drives the expansion tube 32 to move radially along the expansion tube 32. By driving the second engaging unit 53 to move, the first engaging unit 51 applies a radial force to the expansion tube 32, thereby achieving position correction of the guide assembly 30.

[0042] In step S30, based on the connection between the second locking unit 53 and the outer peripheral side of the locking ring 412, the pressing assembly 20 drives the first locking unit 51 to move along the direction of the expansion tube 32 to the first guide tube 31. After the second locking unit 53 is in place, the first locking unit 51 is further driven to move to ensure that the installation position of the dust cover 50 is accurate.

[0043] In step S40 , the press-fitting is completed based on the connection between the first engaging unit 51 and the outer peripheral side of the extension column 4133 .

[0044] Furthermore, step S20 includes step S21 and step S22. Step S10, step S21, step S22, step S30, and step S40 are performed in sequence. Step S21 and step S22 are described in detail as follows: In step S21, the pressing assembly 20 drives the dust cover 50 to move to a state where the first and second engaging units 53 are connected to the outer circumference of the engaging ring 412. The pressing assembly 20 then drives the second engaging unit 53 to move along the direction from the expansion tube 32 to the first guide tube 31 until the second engaging unit 53 is in the second state. The second state includes the second engaging unit 53 abutting against the outer circumference of the engaging ring 412 away from the arm base body 411.

[0045] In step S22, the pressing assembly 20 drives the second engaging unit 53 to move along the direction from the expansion tube 32 to the first guide tube 31 until the second engaging unit 53 is in the second state. The pressing assembly 20 drives the second engaging unit 53 to move along the direction from the expansion tube 32 to the first guide tube 31 from the second state until the second engaging unit 53 is connected to the outer circumferential surface of the engaging ring 412. During the process of the second engaging unit 53 moving from the second state to the process of the second engaging unit 53 connecting to the outer circumferential surface of the engaging ring 412, the first engaging unit 51 is in a free state. During the installation of the dust cover 50, the first compression sleeve 221 first drives the second engaging unit 53 of the dust cover 50, stretching the bellows 52. This allows the bellows 52 to exert a force on the first engaging unit 51, driving the guide assembly 30 to calibrate. After the guide assembly 30 is calibrated, the first and second engaging sleeves simultaneously exert a force on the dust cover 50, allowing the dust cover 50 to move closer to the engaging ring 412 and engage the second engaging unit 53, completing installation. After the second engaging unit 53 is installed, the second compression sleeve 222 independently drives the first engaging unit 51 toward the second engaging unit 53 until the first engaging unit 51 is fully installed, and the dust cover 50 is installed. While in a free state, the first engaging unit 51 can adaptively adjust its position as the guide assembly 30 is calibrated, reducing frictional resistance between the first engaging unit 51 and the guide assembly 30. This reduces resistance to downward movement of the first engaging unit 51 after the guide assembly 30 is corrected.

[0046] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and that in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A dust cover press-fitting system, characterized in that: The dust boot press-fitting system comprises: Press-fit components; The guide assembly includes an expansion tube and a first guide tube; the expansion tube and the first guide tube are sequentially connected along the axial direction of the first guide tube; The swing arm assembly includes an arm base unit; the arm base unit includes an arm base body, a clamping ring, and a swing arm module; the clamping ring is connected to the arm base body; the swing arm module includes a ball head, a clamping column, and an extension column; the ball head, the clamping column, and the extension column are sequentially connected along the axial direction of the clamping column; the ball head is slidably connected to the arm base body; the clamping column passes through the clamping ring; The dust cover comprises a first engaging unit, a bellows, and a second engaging unit; the first engaging unit, the bellows, and the second engaging unit are sequentially connected along the axial direction of the bellows; R3>R1>R2; wherein R1 is the maximum outer diameter of the expansion tube, R2 is the minimum inner diameter of the first engaging unit in a free state, and R3 is the maximum inner diameter of the first engaging unit after the inner diameter is expanded when subjected to an external force; The first length is smaller than the second length; when the first engaging unit is in a free state, the length of the bellows is the first length; in the first working state, the pressing assembly applies pressure to the second engaging unit, and the length of the bellows is the second length; the first working state includes the inner circumferential wall of the first guide tube abutting against the outer circumferential wall of the extension column, and the inner circumferential wall of the first engaging unit abutting against the outer circumferential wall of the expansion tube.

2. A dust cover press-fitting system according to claim 1, characterized in that: The outer diameter of the expansion tube gradually increases along a direction from the expansion tube to the first guide tube.

3. A dust cover press-fitting system according to claim 1, characterized in that: The inner circumferential wall of the first engaging unit abuts against the outer circumferential wall of the expansion tube. When the pressing assembly does not apply pressure to the second engaging unit, the distance from the first engaging unit to the engaging ring is greater than or equal to the maximum length of the bellows when stretched.

4. A dust cover press-fitting system according to claim 1, characterized in that: The outer diameter of the first guide tube gradually increases along the direction from the expansion tube to the first guide tube; R4<R2<R5<R3; wherein, R4 is the minimum outer diameter of the first guide tube, and R5 is the maximum outer diameter of the first guide tube.

5. A dust cover press-fitting system according to claim 1, characterized in that: The guide assembly further includes a groove; the groove is recessed from the outer peripheral wall of the first guide tube toward the inner peripheral wall of the first guide tube.

6. A dust cover press-fitting system according to claim 1, characterized in that: The guide assembly further includes a second guide tube; the first guide tube, the expansion tube, and the second guide tube are sequentially connected along the axial direction of the first guide tube; the radial direction of the second guide tube gradually increases from the expansion tube to the first guide tube; R5<R2; wherein R5 is the maximum diameter of the second guide tube.

7. A dust cover press-fitting system according to claim 1, characterized in that: The pressing assembly includes a substrate and a pressing unit; the pressing unit includes a first pressing sleeve and a second pressing sleeve; the first pressing sleeve is connected to the substrate; the second pressing sleeve is slidably connected to the first pressing sleeve; the second pressing sleeve is arranged in the space surrounded by the first pressing sleeve; the second pressing sleeve moves along the central axis of the second pressing sleeve; the first pressing sleeve is used to drive the second clamping unit; and the second pressing sleeve is used to drive the first clamping unit.

8. A dust cover press-fitting system according to claim 7, characterized in that: The press-fit assembly further includes a clamping unit; the clamping unit is connected to the base plate; the clamping unit applies a force to the second clamping unit to make the second clamping unit fit with the first press-fit sleeve.

9. A dust cover press-fitting method, characterized in that: The dust boot press-fitting method is applied to a dust boot press-fitting system according to any one of claims 1 to 8, and the dust boot press-fitting method comprises: Based on the triggering of the press-fitting instruction, the press-fitting assembly drives the dust cover to move to the first state; wherein the first state includes the first engaging unit abutting against the expansion tube, and the bellows and the second engaging unit are respectively sleeved on the outer circumference of the first guide tube; The pressing assembly drives the second clamping unit to move along the direction from the expansion tube to the first guide tube until the second clamping unit is connected to the outer peripheral side of the clamping ring; wherein, during the movement of the second clamping unit, the first clamping unit drives the expansion tube to move along the radial direction of the expansion tube; Based on the second engaging unit being connected to the outer peripheral side of the engaging ring, the pressing assembly drives the first engaging unit to move along the direction from the expansion tube to the first guide tube; The press-fitting is completed based on the connection between the first engaging unit and the outer peripheral side of the extension column.

10. A dust cover press-fitting method according to claim 9, characterized in that: The pressing assembly drives the second clamping unit to move along the direction from the expansion tube to the first guide tube until the second clamping unit is connected to the outer peripheral side of the clamping ring, comprising: The pressing assembly drives the second engaging unit to move along the direction from the expansion tube to the first guide tube until the second engaging unit is in a second state; wherein the second state includes the second engaging unit abutting against the outer peripheral surface of the engaging ring away from the arm base body; The pressing assembly drives the second locking unit to move along the direction from the expansion tube to the first guide tube from the second state to the second locking unit being connected to the outer peripheral surface of the locking ring; wherein, during the process of the second locking unit moving from the second state to the second locking unit being connected to the outer peripheral surface of the locking ring, the first locking unit is in a free state.

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