A three-piece aluminum alloy forged wheel

Abstract

The application relates to the technical field of hub mounting, in particular to a three-piece aluminum alloy forged hub, which comprises a front rim piece, a rear rim piece and a top part arranged on the front rim piece, a first connecting ring is fixedly connected to the inner wall of the front rim piece, a first positioning groove is arranged on the surface of the front rim piece, a first recess is arranged on the inner wall of the front rim piece, a second connecting ring is arranged on the top part of the first connecting ring, a third connecting ring is fixedly connected to the inner wall of the rear rim piece, a plurality of first thread grooves are equidistantly arranged on the surface of the first connecting ring in a circumferential direction, a plurality of second thread grooves are equidistantly arranged on the surface of the second connecting ring in a circumferential direction, a plurality of third thread grooves are equidistantly arranged on the surface of the third connecting ring in a circumferential direction, and bolts are threadedly connected to the inner walls of the third thread grooves. The clamping between the first positioning rod and the annular positioning block further strengthens the connection between the front rim piece and the rear rim piece, so that the stability of the connection between the front rim piece and the rear rim piece is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hub mounting, in particular to a three-piece aluminum alloy forged hub. BACKGROUND

[0002] The hub is the rotating part of the wheel core connected by the column of the inner profile wheel steel, that is, the metal part supporting the center of the tire mounted on the shaft, also called the wheel rim, steel ring, hub, tire bell. The hub is various according to diameter, width, molding method and material. The hub is divided into one-piece hub, two-piece hub and three-piece hub.

[0003] The existing three-piece hub is usually connected by a nut and a bolt, and the connection between the rim front piece, the spoke and the rim rear piece needs to be installed by manually aligning the threaded holes, which reduces the installation efficiency in the process of alignment.

[0004] Therefore, a three-piece aluminum alloy forged hub is proposed. SUMMARY

[0005] The purpose of the present application is to provide a three-piece aluminum alloy forged hub, by pulling one end of the first positioning rod, then rotating clockwise while pulling the first positioning rod, so that the threaded ring rotates during movement, so that the threaded ring is connected with the fourth threaded groove, at this time the first spring is in a contracted state with the movement of the first positioning rod, then the second recessed groove on one side of the second connecting ring bottom is fitted with the first connecting ring top, then the second recessed groove is fitted on the outer wall of the protrusion, finally the annular positioning block at the bottom of the rim rear piece is clamped with the first positioning groove at the top of the rim front piece, at this time the third connecting ring is fitted with the top of the second connecting ring with the connection of the rim rear piece and the rim front piece, then the third threaded groove is aligned with the second threaded groove by rotating the rim rear piece, at this time the clamping between the protrusion and the second recessed groove can prevent the second connecting ring from moving during rotation of the rim rear piece, when the first threaded groove, the second threaded groove and the third threaded groove are aligned, the bolt is inserted through the third threaded groove and extends to the bottom of the first threaded groove, then the nut is rotated to complete the fixation of the bolt, at this time the first positioning rod is rotated counterclockwise, and the threaded ring is disconnected from the fourth threaded groove during rotation of the first positioning rod, at this time the first spring rebounds to move the first positioning rod, at this time the first positioning rod is clamped by the first recessed groove in the inner wall of the rim front piece and the second positioning groove in the annular positioning block, thereby strengthening the connection between the rim front piece and the rim rear piece, to solve the problems in the above background.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] The utility model provides a kind of three-piece aluminum alloy forged hub, including rim front piece, rim rear piece, be provided in the top of the rim front piece, the first connecting ring is fixedly connected in the inner wall of the rim front piece, the first locating slot is opened in the surface of the rim front piece, the first recess is opened in the inner wall of the rim front piece, the first locating slot is communicated with first recess, the second connecting ring is equipped in the top of the first connecting ring, the third connecting ring is fixedly connected in the inner wall of the rim rear piece, a plurality of first thread grooves are equidistantly opened in the surface of the first connecting ring, a plurality of second thread grooves are equidistantly opened in the surface of the second connecting ring, a plurality of third thread grooves are equidistantly opened in the surface of the third connecting ring, bolt is threadedly connected in the inner wall of a plurality of third thread grooves, the other end of bolt extends to the bottom of first thread groove by penetrating second thread groove, nut is threadedly connected on the outer wall of bolt, square locating block is fixedly connected in the bottom of the first connecting ring, first locating rod is equipped in the inner wall of square locating block, first spring is sleeved on the outer wall of first locating rod, one end of first spring is fixedly connected with first locating rod, the other end of first spring is fixedly connected with square locating block, annular locating block is fixedly connected in the bottom of the rim rear piece, second locating slot is opened in the surface of annular locating block, first locating rod is clamped by first recess and second locating slot.

[0008] First, by pulling one end of the first locating rod, then rotate clockwise while pulling the first locating rod, so that the thread ring rotates in the process of moving, so that the thread ring is connected with the fourth thread groove, at this time the first spring is in the contraction state along with the movement of the first locating rod, then the bottom of the second connecting ring is opened with the second recess and the top of the first connecting ring is attached, then the second recess is attached to the outer wall of the protrusion, finally the annular locating block at the bottom of the rim rear piece is clamped with the first locating slot at the top of the rim front piece, at this time the third connecting ring is attached to the top of the second connecting ring along with the connection of the rim rear piece and the rim front piece, then rotate the rim rear piece to calibrate the third thread groove with the second thread groove, at this time the clamping between the protrusion and the second recess can prevent the second connecting ring from moving during the rotation of the rim rear piece, when the first thread groove, the second thread groove and the third thread groove are calibrated, the bolt is inserted into the first thread groove through the third thread groove and extends to the bottom of the first thread groove, then rotate the nut to complete the fixation of the bolt, at this time rotate the first locating rod counterclockwise, the thread ring is disconnected from the fourth thread groove during the rotation of the first locating rod, at this time the first spring rebounds, thereby moving the first locating rod, at this time the first locating rod is clamped by the first recess in the inner wall of the rim front piece and the second locating slot in the annular locating block, thereby strengthening the connection between the rim front piece and the rim rear piece.

[0009] Preferably, the first thread groove inner wall size is matched with the bolt outer wall size, the second thread groove inner wall size is matched with the bolt outer wall size, and the third thread groove inner wall size is matched with the bolt outer wall size.

[0010] By setting the first thread groove, the second thread groove and the third thread groove to the same size, the bolt can be more closely connected to the rim front piece, the second connecting ring and the rim rear piece through the first thread groove, the second thread groove and the third thread groove.

[0011] Preferably, a plurality of protrusions are fixedly connected to the top of the first connecting ring in a circumferential equidistant manner, and a plurality of second grooves matched with the plurality of protrusions are formed in the bottom of the second connecting ring in a circumferential equidistant manner.

[0012] By matching the protrusions on the top of the first connecting ring with the second grooves on the bottom of the second connecting ring, the movement of the second connecting ring can be prevented when the second thread groove and the third thread groove are calibrated during the rotation of the rim rear piece, so that the deviation of the position of the second thread groove caused by the movement of the second connecting ring is prevented, and the efficiency of the bolt connection is prevented from being affected.

[0013] Preferably, the number of square positioning blocks is two, a threaded ring is fixedly connected to the outer wall of the first positioning rod, and a fourth thread groove matched with the threaded ring is formed in the interior of each square positioning block.

[0014] By setting the fourth thread groove, the first positioning rod can be fixed by the threaded ring while being stretched and rotated, so that the first positioning rod can subsequently engage with the annular positioning block on the bottom of the rim rear piece, thereby strengthening the connection between the rim front piece and the rim rear piece.

[0015] Preferably, the first positioning groove inner wall size is matched with the annular positioning block outer wall size.

[0016] By matching the annular positioning block outer wall size with the first positioning groove inner wall size, the preliminary engagement between the rim front piece and the rim rear piece can be completed.

[0017] Preferably, the first positioning rod outer wall size is matched with the first groove inner wall size, and the first positioning rod outer wall size is matched with the second positioning groove inner wall size.

[0018] By matching the first positioning rod with the second positioning groove, the first positioning rod can engage with the annular positioning block through the second positioning groove, thereby strengthening the connection between the rim front piece and the rim rear piece.

[0019] Preferably, the rim front piece and the rim rear piece are connected to form a sealing port, the outer wall of the rim front piece is fixedly connected with an annular baffle, the outer wall of the rim front piece is fixedly connected with a first annular connecting block, two sliding grooves are symmetrically formed in the inner wall of the first annular connecting block, two sliding blocks are slidably connected to the inner wall of the sliding grooves, a third positioning groove is symmetrically formed in the surface of the sliding block, the outer wall of the rim rear piece is fixedly connected with a second annular connecting block, two second positioning rods are symmetrically slidably connected to the inner wall of the second annular connecting block, an installation groove is formed in the inner wall of the second annular connecting block, two second springs are fixedly connected to the outer wall of the second positioning rod, the two second springs are located inside the installation groove, the other end of the two second springs is fixedly connected with the second annular connecting block, a third recess is formed in one end of the second annular connecting block close to the rim front piece, and the sliding block is clamped with the second positioning rod through the third positioning groove.

[0020] When the rim front piece and the rim rear piece are clamped, the staff seals the sealing port at the connection between the rim front piece and the rim rear piece, and when the sealing is completed, the sliding block is pulled to block the glue in the sealing port, so as to ensure the air tightness. During the pulling of the sliding block, the second positioning rod is stretched outward, so that the second positioning rod drives the second spring to move. When one end of the sliding block completely enters the third recess, the second positioning rod is loosened, and the second positioning rod rebounds through the second spring, so that one end of the second positioning rod is clamped into the third positioning groove in the sliding block, thereby fixing the sliding block and ensuring the air tightness.

[0021] Preferably, the sliding block is annular, and the outer wall of one end of the sliding block close to the rim front piece is matched with the third recess.

[0022] The annular sliding block can completely block the glue of the sealing port, thereby preventing the glue from leaking out and ensuring the air tightness between the rim front piece and the rim rear piece.

[0023] Preferably, the sliding block is annular, and the outer wall of one end of the sliding block close to the rim front piece is matched with the third recess.

[0024] The size of the inner wall of the third positioning groove is matched with the size of the outer wall of one end of the second positioning rod, so as to prevent the sliding block from moving after installation and prevent the glue of the sealing port from leaking out.

[0025] Preferably, the second connecting ring is provided with a connecting port in the center, and a plurality of fifth threaded grooves are equidistantly formed on the surface of the second connecting ring.

[0026] The connecting port and the fifth threaded groove facilitate the installation and connection of the second connecting ring with the automobile.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. The present invention further strengthens the connection between the front and rear rim pieces by engaging the first positioning rod with the annular positioning block, thereby ensuring the stability of the connection between the front and rear rim pieces.

[0029] 2. The present invention, through the cooperative use of the protrusion and the second groove, prevents the operator from moving the second connecting ring when calibrating the second thread groove and the third thread groove, thereby preventing the calibration time from increasing due to the rotation of the second connecting ring, and thus indirectly improving the installation efficiency.

[0030] 3. The present invention can block the sealant opening at the connection between the front and rear plates of the rim by using the slider and the second positioning rod, thereby preventing the glue from leaking out and ensuring airtightness. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the overall disassembled structure of the present invention;

[0034] Figure 4 This is a cross-sectional structural diagram of the second connecting ring of the present invention;

[0035] Figure 5 for Figure 2 Enlarged view of the structure at point A;

[0036] Figure 6 for Figure 2 Enlarged view of the structure at point B;

[0037] Figure 7 for Figure 2 Enlarged view of the structure at point C;

[0038] Figure 8 for Figure 3 Enlarged view of the structure at point D;

[0039] Figure 9 This is a top cross-sectional view of the connection between the front rim piece and the first annular connecting block of the present invention.

[0040] Figure 10 This is a top cross-sectional view of the connection between the front rim piece and the annular baffle of the present invention;

[0041] Figure 11 for Figure 3 Enlarged view of the structure at point E.

[0042] In the figure: 1 front piece of the rim, 2 rear piece of the rim, 3 first connecting ring, 4 first positioning groove, 5 first recess, 6 second connecting ring, 7 third connecting ring, 8 first threaded groove, 9 second threaded groove, 10 third threaded groove, 11 bolt, 12 nut, 13 square positioning block, 14 first positioning rod, 15 first spring, 16 annular positioning block, 17 second positioning groove, 18 protrusion, 19 second recess, 20 threaded ring, 21 fourth threaded groove, 22 annular baffle, 23 first annular connecting block, 24 sliding block, 25 third positioning groove, 26 second annular connecting block, 27 second positioning rod, 28 mounting groove, 29 second spring, 30 third recess, 31 connecting port, 32 fifth threaded groove, 33 glue sealing port, 34 sliding groove. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", and "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Please refer to Figures 1 to 11 The application provides a three-piece aluminum alloy forged hub, and has the technical scheme as follows.

[0047] The three-piece aluminum alloy forged hub comprises a rim front piece 1, a rim rear piece 2, and a first connecting ring 3 fixedly connected to the inner wall of the rim front piece 1 and arranged on the top of the rim front piece 1, a first positioning groove 4 arranged on the surface of the rim front piece 1, a first recess 5 arranged on the inner wall of the rim front piece 1, a second connecting ring 6 arranged on the top of the first connecting ring 3, a third connecting ring 7 fixedly connected to the inner wall of the rim rear piece 2, a plurality of first thread grooves 8 equidistantly arranged on the surface of the first connecting ring 3, a plurality of second thread grooves 9 equidistantly arranged on the surface of the second connecting ring 6, a plurality of third thread grooves 10 equidistantly arranged on the surface of the third connecting ring 7, a bolt 11 threadedly connected to the inner wall of the third thread grooves 10, the other end of the bolt 11 penetrating through the second thread grooves 9 and extending to the bottom of the first thread grooves 8, a nut 12 threadedly connected to the outer wall of the bolt 11, a square positioning block 13 fixedly connected to the bottom of the first connecting ring 3 in a symmetrical manner, a first positioning rod 14 arranged on the inner wall of the square positioning block 13, a first spring 15 sleeved on the outer wall of the first positioning rod 14, one end of the first spring 15 fixedly connected to the first positioning rod 14, the other end of the first spring 15 fixedly connected to the square positioning block 13, a ring-shaped positioning block 16 fixedly connected to the bottom of the rim rear piece 2, a second positioning groove 17 arranged on the surface of the ring-shaped positioning block 16, and the first positioning rod 14 clamped with the second positioning groove 17 through the first recess 5.

[0048] Firstly, one end of the first positioning rod 14 is pulled, and then the first positioning rod 14 is pulled while being rotated clockwise, so that the threaded ring 20 rotates during movement, so that the threaded ring 20 is connected with the fourth threaded groove 21, at this time the first spring 15 is in a contracted state with the movement of the first positioning rod 14, then the second connecting ring 6 is attached to the top of the first connecting ring 3, then the second connecting ring 6 is attached to the outer wall of the protrusion 18, finally the annular positioning block 16 at the bottom of the rim rear piece 2 is clamped with the first positioning groove 4 at the top of the rim front piece 1, at this time the third connecting ring 7 is attached to the top of the second connecting ring 6 with the connection of the rim rear piece 2 and the rim front piece 1, then the third threaded groove 10 is aligned with the second threaded groove 9 by rotating the rim rear piece 2, at this time the second connecting ring 6 can be prevented from moving during rotation of the rim rear piece 2 by clamping between the protrusion 18 and the second recess 19, when the first threaded groove 8, the second threaded groove 9 and the third threaded groove 10 are aligned, the bolt 11 is inserted through the third threaded groove 10 and extends to the bottom of the first threaded groove 8, then the nut 12 is rotated to complete the fixation of the bolt 11, at this time the first positioning rod 14 is rotated counterclockwise, the threaded ring 20 is disconnected from the fourth threaded groove 21 during rotation of the first positioning rod 14, at this time the first spring 15 rebounds to move the first positioning rod 14, at this time the first positioning rod 14 is clamped by the first recess 5 in the inner wall of the rim front piece 1 and the second positioning groove 17 in the annular positioning block 16, thereby strengthening the connection between the rim front piece 1 and the rim rear piece 2.

[0049] As an embodiment of the present application, referring to Figure 2 and Figure 3 , the inner wall size of the first threaded groove 8 is matched with the outer wall size of the bolt 11, the inner wall size of the second threaded groove 9 is matched with the outer wall size of the bolt 11, and the inner wall size of the third threaded groove 10 is matched with the outer wall size of the bolt 11.

[0050] By setting the first threaded groove 8, the second threaded groove 9 and the third threaded groove 10 to the same size, the bolt 11 can more closely connect the rim front piece 1, the second connecting ring 6 and the rim rear piece 2 through the first threaded groove 8, the second threaded groove 9 and the third threaded groove 10.

[0051] As an embodiment of the present application, referring to Figure 2 and Figure 5 , a plurality of protrusions 18 are fixedly connected to the top of the first connecting ring 3 in a circumferential equidistant manner, and a plurality of second recesses 19 matched with the plurality of protrusions 18 are formed in the bottom of the second connecting ring 6 in a circumferential equidistant manner.

[0052] The convex block 18 on the top of the first connecting ring 3 is matched with the second groove 19 on the bottom of the second connecting ring 6, so that the second connecting ring 6 is prevented from moving when the second threaded groove 9 and the third threaded groove 10 are calibrated during the rotation of the rim back piece 2, and the position of the second threaded groove 9 is prevented from being deviated due to the movement of the second connecting ring 6, so that the efficiency of the bolt 11 connection is prevented from being affected.

[0053] As an embodiment of the present application, referring to Figure 2 and Figure 8 , the number of the square positioning blocks 13 is two, the outer wall of the first positioning rod 14 is fixedly connected with a threaded ring 20, the fourth threaded groove 21 matched with the threaded ring 20 is arranged in the square positioning block 13, and the first positioning rod 14 is screwed with the fourth threaded groove 21 through the threaded ring 20.

[0054] The fourth threaded groove 21 is arranged to fix the first positioning rod 14 through the threaded ring 20 when the first positioning rod 14 is stretched and rotated, so that the first positioning rod 14 can be clamped with the annular positioning block 16 on the bottom of the rim back piece 2, and the connection between the rim front piece 1 and the rim back piece 2 is strengthened.

[0055] As an embodiment of the present application, referring to Figure 2 , the inner wall size of the first positioning groove 4 is matched with the outer wall size of the annular positioning block 16.

[0056] The annular positioning block 16 is matched with the first positioning groove 4 to preliminarily clamp the rim front piece 1 and the rim back piece 2.

[0057] As an embodiment of the present application, referring to Figure 2 and Figure 6 , the outer wall size of the first positioning rod 14 is matched with the inner wall size of the first groove 5, and the outer wall size of the first positioning rod 14 is matched with the inner wall size of the second positioning groove 17.

[0058] The first positioning rod 14 is matched with the second positioning groove 17 to clamp the annular positioning block 16 through the second positioning groove 17, so that the connection between the rim front piece 1 and the rim back piece 2 is strengthened.

[0059] As an embodiment of the present application, referring to Figure 2 , Figure 7 , Figure 9 , Figure 10 and Figure 11The outer wall of the front rim piece 1 is fixedly connected with an annular baffle 22. The outer wall of the front rim piece 1 is fixedly connected with a first annular connecting block 23. Two sliding grooves 34 are symmetrically formed in the inner wall of the first annular connecting block 23. A sliding block 24 is slidably connected in the sliding grooves 34. Third positioning grooves 25 are symmetrically formed in the surface of the sliding block 24. The outer wall of the rear rim piece 2 is fixedly connected with a second annular connecting block 26. Two second positioning rods 27 are symmetrically slidably connected in the inner wall of the second annular connecting block 26. An installation groove 28 is formed in the inner wall of the second annular connecting block 26. Two second springs 29 are fixedly connected to the outer wall of the second positioning rods 27. The two second springs 29 are located in the installation groove 28. The other ends of the two second springs 29 are fixedly connected with the second annular connecting block 26. A third recess 30 is formed in the end of the second annular connecting block 26 close to the front rim piece 1. The sliding block 24 is clamped with the second positioning rods 27 through the third positioning grooves 25.

[0060] When the clamping between the front rim piece 1 and the rear rim piece 2 is completed, the staff seals the sealing port 33 at the connection between the front rim piece 1 and the rear rim piece 2. When the sealing is completed, the sliding block 24 is pulled to block the glue in the sealing port 33, thereby ensuring the air tightness. In the process of pulling the sliding block 24, the second positioning rods 27 are stretched outward, so that the second positioning rods 27 drive the second springs 29 to move. When one end of the sliding block 24 completely enters the third recess 30, the second positioning rods 27 are loosened. At this time, the second positioning rods 27 rebound through the second springs 29, so that one end of the second positioning rods 27 is clamped into the third positioning grooves 25 in the sliding block 24, thereby fixing the sliding block 24 and ensuring the air tightness.

[0061] As an embodiment of the present application, referring to Figure 2 and Figure 7 The sliding block 24 is annular. The end of the sliding block 24 away from the front rim piece 1 is fixedly connected with a protruding block. The outer wall of the end of the sliding block 24 close to the front rim piece 1 is matched with the third recess 30.

[0062] The annular sliding block 24 can completely block the glue of the sealing port 33, thereby preventing the glue from leaking out and ensuring the air tightness between the front rim piece 1 and the rear rim piece 2.

[0063] As an embodiment of the present application, referring to Figure 2 and Figure 7 The inner wall size of the third positioning grooves 25 is matched with the outer wall size of one end of the second positioning rods 27.

[0064] The inner wall size of the third positioning grooves 25 is matched with the outer wall size of one end of the second positioning rods 27, thereby preventing the sliding block 24 from moving after installation and preventing the glue of the sealing port 33 from leaking out.

[0065] As an embodiment of the present application, with reference to Figure 2 and Figure 4 , the second connecting ring 6 is centrally provided with a connecting port 31, and a plurality of fifth threaded grooves 32 are equidistantly arranged on the surface of the second connecting ring 6.

[0066] The connecting port 31 and the fifth threaded grooves 32 facilitate the installation and connection between the second connecting ring 6 and the automobile.

[0067] Working principle: first, pull one end of the first positioning rod 14, then rotate clockwise while pulling the first positioning rod 14, so that the threaded ring 20 rotates during movement, so that the threaded ring 20 is connected with the fourth threaded groove 21, at this time the first spring 15 is in a contracted state with the movement of the first positioning rod 14, then the second connecting ring 6 bottom provided with a second groove 19 is attached to the top of the first connecting ring 3, then the second groove 19 is attached to the outer wall of the protrusion 18, finally the annular positioning block 16 at the bottom of the rim back piece 2 is clamped with the first positioning groove 4 at the top of the rim front piece 1, at this time the third connecting ring 7 is attached to the top of the second connecting ring 6 with the connection of the rim back piece 2 and the rim front piece 1, then rotate the rim back piece 2 to align the third threaded groove 10 with the second threaded groove 9, at this time the clamping between the protrusion 18 and the second groove 19 can prevent the rim back piece 2 from moving during rotation. When the first threaded groove 8, the second threaded groove 9 and the third threaded groove 10 are aligned, the bolt 11 is inserted through the third threaded groove 10 and extends to the bottom of the first threaded groove 8, then the nut 12 is rotated to complete the fixation of the bolt 11, at this time the first positioning rod 14 is rotated counterclockwise, and the threaded ring 20 is disconnected from the fourth threaded groove 21 during the rotation of the first positioning rod 14, at this time the first spring 15 rebounds to move the first positioning rod 14, at this time the first positioning rod 14 is clamped by the first groove 5 on the inner wall of the rim front piece 1 and the second positioning groove 17 inside the annular positioning block 16, thereby strengthening the connection between the rim front piece 1 and the rim back piece 2. When the rim front piece 1 and the rim back piece 2 are clamped, the worker seals the glue port 33 at the connection between the rim front piece 1 and the rim back piece 2, and when the sealing is completed, the sliding block 24 blocks the glue in the glue port 33 to ensure air tightness. During the pulling of the sliding block 24, the second positioning rod 27 is stretched outward to move the second spring 29, and when one end of the sliding block 24 completely enters the third groove 30, the second positioning rod 27 is loosened, and the second positioning rod 27 is clamped into the third positioning groove 25 inside the sliding block 24 by the rebound of the second spring 29, thereby completing the fixation of the sliding block 24 and ensuring air tightness.

[0068] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A three-piece aluminum alloy forged wheel hub, comprising a rim front piece; a rim rear piece arranged on the top of the rim front piece; characterized in that a first connecting ring is fixedly connected to the inner wall of the rim front piece, a first positioning groove is formed on the surface of the rim front piece, a first recess is formed on the inner wall of the rim front piece, the first positioning groove is in communication with the first recess, a second connecting ring is arranged on the top of the first connecting ring, a third connecting ring is fixedly connected to the inner wall of the rim rear piece, a plurality of first thread grooves are equidistantly formed on the surface of the first connecting ring, a plurality of second thread grooves are equidistantly formed on the surface of the second connecting ring, a plurality of third thread grooves are equidistantly formed on the surface of the third connecting ring, a bolt is threadedly connected to the inner wall of the third thread groove, the other end of the bolt extends through the second thread groove and reaches the bottom of the first thread groove, a nut is threadedly connected to the outer wall of the bolt, a square positioning block is fixedly connected to the bottom of the first connecting ring, a first positioning rod is arranged on the inner wall of the square positioning block, a first spring is sleeved on the outer wall of the first positioning rod, one end of the first spring is fixedly connected to the first positioning rod, the other end of the first spring is fixedly connected to the square positioning block, an annular positioning block is fixedly connected to the bottom of the rim rear piece, a second positioning groove is formed on the surface of the annular positioning block, the first positioning rod is clamped in the first recess and the second positioning groove; an encapsulation opening is formed at the joint of the rim front piece and the rim rear piece, an annular baffle is fixedly connected to the outer wall of the rim front piece, a first annular connecting block is fixedly connected to the outer wall of the rim front piece, two sliding grooves are equidistantly formed on the inner wall of the first annular connecting block, a sliding block is slidably connected to the inner wall of each sliding groove, a third positioning groove is formed on the surface of the sliding block, a second annular connecting block is fixedly connected to the outer wall of the rim rear piece, two second positioning rods are slidably connected to the inner wall of the second annular connecting block, an installation groove is formed on the inner wall of the second annular connecting block, two second springs are fixedly connected to the outer wall of each second positioning rod, the two second springs are located in the installation groove, the other end of each second spring is fixedly connected to the second annular connecting block, a third recess is formed on the end of the second annular connecting block close to the rim front piece, the sliding block is clamped in the third positioning groove and the second positioning rod; the outer wall of the end of the sliding block close to the rim front piece is matched with the third recess; the sliding block is annular, a protrusion is fixedly connected to the end of the bottom of the sliding block away from the rim front piece, the size of the inner wall of the third positioning groove is matched with the size of the outer wall of the end of the second positioning rod; The glue of the encapsulation opening is completely blocked by the sliding block to prevent the glue from leaking out.

2. A three-piece aluminum alloy forged wheel hub as defined in claim 1, wherein: the size of the inner wall of the first thread groove is matched with the size of the outer wall of the bolt, the size of the inner wall of the second thread groove is matched with the size of the outer wall of the bolt, and the size of the inner wall of the third thread groove is matched with the size of the outer wall of the bolt.

3. The three-piece aluminum alloy forged wheel of claim 1, wherein: a plurality of protrusions are equidistantly fixedly connected to the top of the first connecting ring, and a second recess matched with the plurality of protrusions is equidistantly formed on the bottom of the second connecting ring.

4. The three-piece aluminum alloy forged wheel of claim 1, wherein: The number of the square positioning blocks is two, the outer wall of the first positioning rod is fixedly connected with a threaded ring, the interiors of the two square positioning blocks are provided with fourth threaded grooves matched with the threaded ring, and the first positioning rod is in threaded connection with the fourth threaded grooves through the threaded ring.

5. A three-piece aluminum alloy forged wheel hub as defined in claim 4, wherein: The inner wall size of the first positioning groove is matched with the outer wall size of the annular positioning block.

6. The three-piece aluminum alloy forged wheel of claim 1, wherein: The outer wall size of the first positioning rod is matched with the inner wall size of the first groove and the inner wall size of the second positioning groove.

7. The three-piece aluminum alloy forged wheel of claim 1, wherein: The center of the second connecting ring is provided with a connecting port, and a plurality of fifth threaded grooves are equidistantly arranged on the surface of the second connecting ring.

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