TW202118648A - Rim with low directional mixed fiber reinforcing member and its manufacturing method - Google Patents

Abstract

A rim with low directional mixed fiber reinforcing member and its manufacturing method, which includes a ring body, a reinforcing member, a nut and a bolt, the reinforcing member is made of low directional mixed fiber, the nut is disposed in the reinforcing member, which can not only resist tension from all directions, but also can prevent the nut from breaking away from the reinforcing member, a pressing slot is arranged in a recessed groove of the rim body and has an inclined urgent side, a conical urgent cone is formed on the reinforcing member, when the reinforcing member is locked to the rim body through the nut and the bolt, the urgent cone can be fastened urgently in the pressing slot, so that the reinforcing member and the rim body can be tightly engaged, enabling the reinforcing member to bear the external force on the ring body together.

Description

Wheel rim with low-directionality mixed fiber reinforced part and manufacturing method thereof

The present invention relates to the technical field of rims, and in particular refers to a rim with a low-directionality mixed fiber reinforcement.

The present invention also relates to a method of manufacturing a rim having the aforementioned low-directionality mixed fiber reinforcement.

Generally, fine-quality rims are often inlaid with decorative pieces on the surface. As shown in Figures 1 and 2, the general rim 10 is mainly composed of a rim body 11 and a decorative piece 12. The rim body 11 is recessed with an embedding groove 111 , And the decorative piece 12 is embedded in the embedding groove 111, so that the surface layer of the rim body 11 can have more diversified changes.

Generally, a nut 13 is fixed on the inner layer of the decorative piece 12, and a bolt 14 passes through the rim body 11 from the inner layer of the rim body 11 and is locked on the nut 13 to prevent the decorative piece 12 from falling out.装槽111。 Insert slot 111.

In particular, the decorative sheet 12 is usually made of laminated fibers 121. In the forming process, the nut 13 is first placed in a screw groove 112 recessed at the bottom of the insert groove 111, and the layered fiber The fibers 121 are stacked in the embedding groove 111, and a vacuum bag film 21 is used to cover the rim body 11 and the layered fibers 121. After the vacuum bag film 21 is evacuated through an exhaust machine 22, the vacuum bag film 21 can be tightly packed. Cover the layered fibers 121 so that the layered fibers 121 are compacted in the insert groove 111 and are in close contact with the nut 13, and then the vacuum bag film 21, the rim body 11 and the layered fibers 121 are heated in a heating kettle. The best heating temperature should be less than 180 degrees Celsius. During the heating process, the laminated fibers 121 gradually solidify and form the decorative sheet 12, and the nut 13 in contact with the layered fiber 121 is also fixed to the decorative sheet during the heating process Therefore, when the bolt 14 passes through the rim body 11 and is fastened to the nut 13, the plaque 12 can be fixed to prevent the plaque 12 from falling out of the groove 111.

However, the aforementioned rim 10 generally has the following problems: 1. The tensile force between the layered fiber 121 and the layered fiber 121 is relatively low. 2. The decorative piece 12 is locked by the nut 13 and the bolt 14 glued to one of the sides, and the force that the decorative piece 12 comes out of the groove 111 is concentrated on the nut 13, which easily causes the nut 13 to separate from the decorative piece 12 . 3. The trim 12 only has a decorative function and cannot bear the force of the rim.

Regarding the forming process of the rim 10 during the manufacturing process, a groove is dug at the neutral axis of the bending moment and penetrates the neutral axis of the rib to reduce the weight of the rim body 11. However, the processing difficulty is usually high. Need to use a five-axis processing machine for processing. Therefore, there are also defects in the manufacturing process that it is difficult to process.

In view of this, it is indeed necessary to propose a technical solution to solve the aforementioned problems.

The first object of the present invention is to solve the problem of low tensile force between the layered fibers and the layered fibers.

The second object of the present invention is to solve the problem that the force of the fascia is concentrated on the nut.

The third objective of the present invention is to solve the problem that the decorative piece only has a decorative function and cannot bear the force.

The fourth objective of the present invention is to solve

In order to achieve the foregoing objective, the present invention is a rim with a low-directionality mixed fiber reinforcement, which includes:

A rim body has an embedding groove, an embedding groove bottom surface of the embedding groove is recessed with at least one pressing groove, and the pressing groove has an pressing side surface connected to the bottom surface of the embedding groove, and a pressing bottom surface connected to the pressing side surface, the There is an obtuse angle between the pressing side surface and the pressing bottom surface;

A strengthening member arranged in the embedding groove and having at least one pressing cone arranged in the pressing groove; the strengthening member is provided with a nut groove and a nut opening communicating with the nut groove inside the at least one pressing cone; the nut The groove diameter of the groove is greater than the diameter of the nut;

A nut arranged in the nut groove; and

A bolt passes through the nut opening from the inner side of the rim body to lock the nut.

In a preferred embodiment, the number of the pressing groove is two, and the two pressing grooves are respectively located on two sides of the embedding groove, and the pressing side surface is connected between the surface of the rim body and the pressing bottom surface. There is an obtuse angle, which makes the pressing cone tapered. Through the cooperation between the pressing cone and the pressing groove, the reinforcing member can be tightly clamped with the rim body, and then bear the force of the rim body, so as to achieve the effect of supporting the force of the rim body.

In a preferred embodiment, the nut has a head and a neck that are connected, the head has a head diameter, and the neck has a neck diameter, the head diameter is greater than the neck diameter, so that The cross-section of the nut is generally T-shaped, and the head of the nut has an abutting surface, and because the groove diameter of the nut groove is longer than the diameter of the nut opening, the reinforcing member has a direction toward the bottom of the nut groove A top abutment surface. When the nut is located in the nut groove, the abutment surface abuts against the top abutment surface. Since the nut is directly formed in the reinforcing member, the nut will not be separated from the reinforcing member, thereby achieving the effect of preventing the nut from detaching.

In a preferred embodiment, the reinforcing member is made of low-directional mixed fibers. By filling the mold with low-directional mixed fibers to form a reinforcement, the fibers in the reinforcement have no directionality, and the reinforcement can withstand the tensile force from each direction.

In order to achieve the foregoing objective, the present invention also provides a method for manufacturing a rim with a low-directionality mixed fiber reinforcement, which includes:

A forming step of providing a mold, the nut and the bolt, the nut is placed in the mold, and the bolt passes through the mold from the outside of the mold and is locked on the nut;

A step of filling fibers, filling low-directionality mixed fibers into the mold, so that the low-directionality mixed fibers cover the nut;

In a curing step, the mold is closed and the low-directionality mixed fiber is solidified, the low-directionality mixed fiber is formed into the reinforcing member, and the nut is formed in the reinforcing member.

In a preferred embodiment, the nut has a head and a neck connected to each other, the head has a head diameter, and the neck has a neck diameter that is greater than the neck diameter. The mold has an upper mold and a lower mold. In the step of forming the nut, the neck abuts against the lower mold; in the step of filling fibers, low-directional mixed fibers flow into the head and the lower mold. Between the molds, the nut opening is formed. Since the nut is directly formed in the reinforcing member, the nut will not be separated from the reinforcing member, thereby achieving the effect of preventing the nut from detaching.

Please refer to Figures 5 and 6, the present invention is a rim with a low-directionality mixed fiber reinforced component, mainly composed of a rim body 30, a reinforcing member 40, a nut 50 and a bolt 60, which has low-directionality The rim of the hybrid fiber reinforcement includes:

The rim body 30 has an embedding groove 31, an embedding groove bottom surface 311 of the embedding groove 31 is recessed with at least one pressing groove 32, and the pressing groove 32 has an pressing side surface 321 connected to the groove bottom surface 311, and connected to the A pressing bottom surface 322 of the pressing side surface 321 has an obtuse angle θ between the pressing side surface 321 and the pressing bottom surface 322. Preferably, the best angle of the obtuse angle θ is between 105 degrees and 135 degrees; the obtuse angle θ allows the rim body 30 and the reinforcing member 40 to be assembled in a taper matching manner.

The reinforcing member 40 is disposed in the embedding groove 31 and has at least one pressing cone 41 disposed in the pressing groove 32. The reinforcing member 40 is provided with a nut groove 42 inside the at least one pressing cone 41 and communicating with the nut The nut opening 43 of the groove 42 has a groove diameter 421 greater than the diameter length 431 of the nut opening 43.

The nut 50 is arranged in the nut groove 42; the bolt 60 passes through the nut opening 43 from the inner side of the rim body 30 to lock the nut 50. In particular, the bolt 60 has a polygonal shape, thereby preventing the bolt 60 from rotating in the reinforcing member 40.

In this embodiment, the number of the pressing groove 32 is two, and as shown in FIG. 5, the two pressing grooves 32 are respectively located on two sides of the embedding groove 31, and the pressing side surface 321 is further connected to the rim There is also an obtuse angle θ between the surface of the main body 30 and the pressing bottom surface 322, so that the pressing cone 41 is tapered.

It is worth mentioning that the nut 50 has a head 51 and a neck 52 connected to each other. The head 51 has a head diameter 511, and the neck 52 has a neck diameter 521. The head diameter 511 is greater than The neck diameter is long 521, so that the cross-section of the nut 50 is generally T-shaped, and the head 51 of the nut 50 has an abutting surface 512, and because the groove diameter 421 of the nut groove 42 is greater than that of the nut opening 43 The caliber is long 431, so that the reinforcing member 40 has an abutting surface 422 facing the bottom of the nut groove 42. When the nut 50 is located in the nut groove 42, the abutting surface 512 will abut the abutting surface 422, and then The nut 50 is prevented from being separated from the reinforcing member 40.

The above is the structure configuration and connection relationship of the present invention in a preferred embodiment. The effects that the structure of the present invention can achieve will be as follows:

Referring to FIG. 6, the bolt 60 penetrates from the inner side of the rim body 30 and is locked to the nut 50. As the nut 50 is tightened, the pressing cone 41 is tapered, and the pressing groove 32 The pressing side surface 321 is an inclined surface, so that the pressing cone 41 of the strengthening member 40 is more and more tightly locked in the pressing groove 32. When the pressing cone 41 is tightly locked in the pressing groove 32, the pressing cone 41 is tightly fixed in the pressing groove 32. The inclined surface of 41 can bear the force from the pressing inclined surface. Therefore, when the rim with the low-directionality mixed fiber reinforced component is used, the force it bears is transmitted to the reinforced component 40, the force can be strengthened The member 40 not only shares the force received by the rim body 30 and prevents its deformation. At the moment of bearing the force, the reinforcing member 40 will be more tightly clamped in the pressing groove 32 to better prevent the rim body 30 from being deformed. The reinforcing member 40 escapes from the pressing groove 32.

In particular, the reinforcing member 40 is made of a plurality of short fibers with low directivity. The longer the fiber, the more obvious the directionality after being pressed and solidified. Therefore, the optimal fiber length is less than 20mm. The fibers underneath can strengthen the strength of the reinforcement 40 in the exit direction. In more detail, the strength of the reinforcement 40 in the exit direction is approximately between 200 MPa and 250 MPa. More preferably, since the reinforcing member 40 is made of short fibers with lighter weight, and the reinforcing member 40 is assembled on the rim body 30 to reduce the weight of the overall rim. It is worth mentioning that the fiber material can be high-strength fibers such as carbon fiber, dyed carbon fiber, Kevlar fiber, glass fiber, and basalt fiber.

The above is the structural configuration of the present invention. Refer to Figures 8 to 11, and also describe the manufacturing method of the rim with the low-directionality mixed fiber reinforced part of the present invention:

In a forming step, a mold 70, the nut 50 and the bolt 60 are provided, the nut 50 is placed in the mold 70, and the bolt 60 passes through the mold 70 from the outside of the mold 70 and is locked on the nut 50 ；

A fiber filling step is to fill the mold 70 with low-directionality mixed fibers so that the low-directionality mixed fibers cover the nut 50; in this embodiment, the mixed fibers are mixed with resin.

In a curing step, the mold 70 is closed and the low-directionality mixed fiber is solidified, so that the low-directionality mixed fiber is formed into the reinforcing member 40, and the nut 50 is formed in the reinforcing member 40; it is worth mentioning that because After the mold 70 is closed, excess resin will overflow from the edge of the mold 70, and as shown in FIG. 11, the left and right sides of the reinforcing member 40 formed after the mold 70 is opened have margins to be cut off. It is worth mentioning that in the curing step, electric heating tubes are embedded in the plurality of heating holes 73 of the mold 70, and the temperature of the electric heating tubes is less than 180 degrees Celsius; and the heater embedded in the heating hole 73 It is not limited to electric heating tubes.

In this embodiment, the mold 70 has an upper mold 71 and a lower mold 72. In the step of forming the nut 50, the neck 52 will abut the lower mold 72; in the step of filling fibers, The low-directivity mixed fiber flows between the head 51 and the lower mold 72 to form the nut opening 43. It is worth mentioning that in the process of the present invention, the rim body 30 below the neutral axis can be processed into a convex shape first, and then the reinforcing member 40 is assembled on the rim body 30, and then as shown in Figures 12A and As shown in 12B, after the strengthening member 40 is combined with the rim body 30, the weight is reduced (for example, through) on the side of the neutral shaft, so that the purpose of weight reduction can be achieved. In particular, since the strengthening member 40 can be installed on the rim After the main body 30 is processed, it is assembled and combined, so that it can be processed directly by a three-axis processing machine, which not only reduces the weight of the rim, but also improves the processing process and makes it easier. Furthermore, as shown in FIG. 13, the reinforcing member 40 can be directly assembled on both sides of the rim body 30, and grooved at the position of the curved neutral axis of the rim body 30 to reduce weight. In this embodiment, Auxiliary reinforcement can be made on the side of the rim body 30, and the rim body 30 can be completed by only three-axis machining. Finally, as shown in FIG. 14, the reinforcing member 40 is assembled on one side of the rim body 30, so that the cross section of the rim body 30 and the reinforcing member 40 is C-shaped; the above embodiments are derived applications of the present invention, mainly The weight is reduced by the neutral shaft on which the ribs of the rim body 30 and the reinforcing member 40 are subjected to the bending moment, but the weight reduction method is not limited to this.

The mold 70 is filled with low-directional mixed fibers to form a reinforcing member 40, so that the fibers in the reinforcing member 40 have no directionality, so that the reinforcing member 40 can withstand the tensile force from each direction. More preferably, since the nut 50 is directly formed in the reinforcing member 40, the nut 50 will not be separated from the reinforcing member 40, thereby achieving the effect of preventing the nut 50 from detaching. Finally, by the cooperation between the pressing cone 41 and the pressing groove 32, the reinforcing member 40 can be tightly clamped with the rim body 30, and then bear the force of the rim body 30, so as to support the rim body. 30 the effect of force.

Acquaintance 10: Wheels 11: Rim body 111: Insert slot 112: screw groove 12: decorative piece 121: layered fiber 13: Nut 14: Bolt 21: Vacuum bag film 22: pumping machinery this invention 30: rim 31: Insert groove 311: Bottom of the slot 32: pressing slot 321: Urgent Side 322: Urgent Bottom 40: Reinforcement 41: Urgency Cone 42: nut slot 421: Groove Diameter Length 43: nut mouth 431: long caliber 50: Nut 51: head 511: long head diameter 512: leaning face 52: neck 521: long neck diameter 422: Reach the top 60: Bolt 70: Mould 71: upper die 72: Lower die 73: heating hole θ: Obtuse angle

Figure 1 is a cross-sectional view of a conventional rim; Figure 2 is a partial enlarged view based on Figure 1; Figure 3 is an exploded view of the conventional wheel rim; Figure 4 is a schematic diagram of the manufacturing process of a conventional wheel rim; Figure 5 is a cross-sectional view of a rim with a low-directionality mixed fiber reinforcement in an embodiment of the present invention; Figure 6 is a partial enlarged view based on Figure 5; Figure 7 is a schematic diagram of providing a mold, a nut and a bolt in the forming step; Fig. 8 is a schematic diagram of fixing the nut on the mold with bolts during the forming step; Figure 9 is a schematic diagram of filling the mold with low-directivity mixed fibers in the fiber filling step; Figure 10 is a schematic diagram of closing the mold and curing the low-directivity hybrid fiber in the curing step; Figure 11 is a schematic diagram of taking out the reinforcement; Figure 12A is a cross-sectional view of the rim body assembling a strengthening member and grooving the curved neutral shaft to reduce weight; Figure 12B is a cross-sectional view of the rim body assembling a strengthening member and passing through the neutral shaft to reduce weight; Figure 13 is a cross-sectional view of the strengthening member being assembled on both sides of the rim body and grooving the curved neutral shaft to reduce weight; Fig. 14 is a cross-sectional view of the reinforcing member being assembled on one side member of the rim body and grooving in the curved neutral axis to reduce weight.

30: rim

31: Insert groove

311: Bottom of the slot

32: pressing slot

321: Urgent Side

322: Urgent Bottom

40: Reinforcement

41: Urgency Cone

42: nut slot

50: Nut

60: Bolt

Claims (9)

A wheel rim with a low-directionality mixed fiber reinforced part, including: A rim body has an embedding groove, an embedding groove bottom surface of the embedding groove is recessed with at least one pressing groove, and the pressing groove has an pressing side surface connected to the bottom surface of the embedding groove, and a pressing bottom surface connected to the pressing side surface, the There is an obtuse angle between the pressing side surface and the pressing bottom surface; A strengthening member arranged in the embedding groove and having at least one pressing cone arranged in the pressing groove; the strengthening member is provided with a nut groove and a nut opening communicating with the nut groove inside the at least one pressing cone; the nut The groove diameter of the groove is greater than the diameter of the nut; A nut arranged in the nut groove; and A bolt passes through the nut opening from the inner side of the rim body to lock the nut. The rim with a low-directionality mixed fiber reinforcement according to claim 1, wherein the number of the pressing groove is two, the two pressing grooves are respectively located on two sides of the inserting groove, and the pressing side surface is further connected to the There is also an obtuse angle between the surface of the rim body and the pressing bottom surface, so that the pressing cone is tapered. The rim with a low-directionality mixed fiber reinforcement according to claim 1, wherein the nut has a head and a neck that are connected, and the neck has a neck diameter, and the head diameter is greater than the neck The diameter of the nut is long, so that the cross-section of the nut is generally T-shaped, and the head of the nut has an abutting surface, and because the groove diameter of the nut groove is longer than the diameter of the nut opening, the strengthening member has a direction toward the nut A top abutting surface at the bottom of the nut groove. When the nut is located in the nut groove, the abutting surface abuts against the top abutting surface. The rim with a low-directionality mixed fiber reinforced member according to claim 1, wherein the reinforcing member is made of low-directionality mixed fiber. The rim with a low-directionality mixed fiber reinforcement as described in claim 1, wherein the value of the obtuse angle is between 105 degrees and 135 degrees. A method for manufacturing a wheel rim with a low-directionality mixed fiber reinforcement as described in claim 1, comprising: A forming step of providing a mold, the nut and the bolt, the nut is placed in the mold, and the bolt passes through the mold from the outside of the mold and is locked on the nut; A step of filling fibers, filling low-directionality mixed fibers into the mold, so that the low-directionality mixed fibers cover the nut; In a curing step, the mold is closed and the low-directionality mixed fiber is solidified, the low-directionality mixed fiber is formed into the reinforcing member, and the nut is formed in the reinforcing member. The method for manufacturing a rim with a low-directionality mixed fiber reinforcement according to claim 6, wherein the nut has a head and a neck that are connected, the head has a long head diameter, and the neck has A neck diameter is long, and the head diameter is longer than the neck diameter. The mold has an upper mold and a lower mold. During the nut forming step, the neck abuts against the lower mold; in the filling fiber In the step, the low-directivity mixed fiber will flow between the head and the lower mold to form the nut opening. The method for manufacturing a rim having a low-directional mixed fiber reinforcement according to claim 6, wherein the fiber length of the low-directional mixed fiber is less than 20 mm. The method for manufacturing a rim with a low-directionality mixed fiber reinforcement according to claim 6, wherein the temperature of the curing step does not exceed 180 degrees Celsius.

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