Automobile pedal, pedal forming die and manufacturing method of automobile pedal

Abstract

The automobile pedal, the pedal forming die and the automobile pedal manufacturing method, including the aluminum pedal main body, the pedal main body is long strip board; Its characterized in being further include pedal insert, pedal insert includes steel cable, steel cable is arranged along the length extension direction of pedal main body in the state of being pre-tensioned, and the pedal main body can wrap around the steel cable after solidification.The strength of the aluminum pedal main body is limited, by setting the steel cable with stronger structural strength in it, the overall structural strength of the automobile pedal is greatly improved; The steel cable in the technical scheme is fixedly arranged in the pedal main body, that is, the aluminum material is wrapped on the steel cable, which realizes the most sufficient connection of the steel cable and the pedal main body, and the pedal main body can be transmitted to the steel cable after being subjected to external force, the steel cable can bear high tension, and the problem of fragmentation of the pedal main body is well solved; The steel cable is arranged in the pedal main body in the state of being pre-tensioned, which well guarantees the structural integrity of the stress area of the pedal main body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile pedal processing, in particular to an automobile pedal, a pedal forming die and an automobile pedal manufacturing method. BACKGROUND

[0002] In order to facilitate people to get on and off the car, automobile pedals are installed on one side of the door of some high chassis cars. At present, the common automobile pedals on the market are made of plastic, aluminum alloy and stainless steel. However, the structure strength of plastic is weak, it is easy to break and not durable, the strength of stainless steel is high but the manufacturing cost is high, and the aluminum alloy is light in weight, easy to shape, low in material cost and good in structure strength, which is very suitable for manufacturing long strip-shaped pedals for automobiles, especially for integrally casting large-size automobile pedals. Although the density of aluminum alloy is low and the strength is high, the collision strength of aluminum alloy material itself is relatively weak. When the aluminum alloy is subjected to strong impact or vibration, excessive deformation of the material will cause cracks and damage to the aluminum alloy, and even broken fragments may splash out, which not only affects the safety of use, but also may damage the automobile pipeline, which greatly affects the safety of the automobile. SUMMARY

[0003] In order to overcome at least one of the above problems in the prior art, the present application provides an automobile pedal, which comprises an aluminum pedal body, the pedal body is in the shape of a long strip, and further comprises a pedal insert, the pedal insert comprises a steel cable, the steel cable is arranged in a pre-tensioned state along the length extension direction of the pedal body, and the pedal body can wrap the steel cable after solidification.

[0004] Among them, the aluminum pedal body contains the following two aspects. First, the automobile pedal in the technical solution of the present application is made of aluminum alloy material, and the present application is an improved scheme for the problems of the automobile pedal made of aluminum alloy in the prior art. The aluminum alloy grades commonly used for manufacturing automobile pedals include A360, AlSi10MnMg, etc. Second, the pedal body is a main component of the automobile pedal, which is a main component for bearing the pressure of stepping or the impact force of the side, and is a component that is relatively easy to deform or crack.

[0005] Among them, the pedal body is in the shape of a long strip, which refers to the shape of the whole pedal body. Specifically, the pedal body has a certain thickness in the up-down direction (i.e. the thickness of the plate), and from top to bottom, the length of the pedal body in the left-right direction is greater than the width in the front-rear direction, i.e. a quadrilateral similar to a long strip. The purpose of such arrangement is to maximize the stepping length to facilitate people to get on and off the car, but this also makes the side of the pedal body easy to touch the external objects.

[0006] The pedal insert is a reinforcing member arranged in the pedal body, and the pedal insert comprises the steel cable and a plurality of positioning blocks connected to the steel cable at intervals, and the positioning blocks are provided with positioning pits.

[0007] The steel cable refers to a steel cable strand twisted by a plurality of steel wire strands around a fiber core or a steel wire core. The steel cable has small size and high structural strength, and its tensile strength is 3-10 times that of aluminum alloy, and it can withstand large pressure and tensile force. Moreover, the steel cable has certain softness and corrosion resistance, is easy to store and very durable. The steel cable is used in cooperation with the aluminum alloy to greatly improve the overall structural strength and durability of the pedal body. In specific applications, at least one steel cable is arranged on the pedal body, and the position of the steel cable is generally arranged in the stress area of the pedal body subjected to pressure or impact.

[0008] The pre-tensioned state refers to installing the steel cable in a taut state into a pedal forming mold, injecting aluminum alloy into the pedal forming mold to cool and form the pedal body, and the aluminum alloy of the pedal body wraps the steel cable and keeps the steel cable in a taut state, so that the steel cable does not appear deformation shapes such as folding back and softening in the pedal body. Of course, the steel cable with certain softness can be adapted to the specific shape of the pedal body and make corresponding changes, for example: when the pedal body is straight, the steel cable is also straight; when the pedal body has a certain arc shape, the steel cable is also arranged in an arc shape. The advantage is that the steel cable can immediately provide a reverse tension for the pedal body when the pedal body is stressed, reducing the occurrence of local displacement or deformation of the pedal body.

[0009] The steel cable is arranged along the length extension direction of the pedal body because the long strip-shaped pedal body will first deform in the length direction when subjected to external pressure, and the arrangement of the steel cable along the length extension direction of the pedal body can well enhance the structural strength of the pedal body in the length direction and reduce the cracking of the pedal body.

[0010] According to the above technical scheme, compared with the prior art, the beneficial technical effects of the present application are as follows: first, the strength of the aluminum pedal body itself is limited, and by arranging a steel cable with higher structural strength in it, the overall structural strength of the automobile pedal is greatly improved; second, the prior art generally uses externally installed reinforcing members, while in the present technical scheme, the steel cable is fixedly arranged in the pedal body, that is, the aluminum material is wrapped on the steel cable, which enables the steel cable and the pedal body to be most fully connected, and the pedal body can be quickly transmitted to the steel cable after being subjected to external force, the steel cable can withstand high tension, and the problem of fragmentation of the pedal body is well solved; third, the steel cable is arranged in the pedal body in a pre-tensioned state, which keeps the steel cable in a taut state and can quickly respond to the deformation force of the pedal body in the length direction, thereby well ensuring the structural integrity of the stress area of the pedal body.

[0011] The automobile pedal is generally installed at the lower part of the side door of the automobile, and the inner side of the pedal body is close to the oil tank, pipelines and connecting lines at the bottom of the automobile. The fragments of the broken pedal body can easily damage the oil tank, pipelines and connecting lines. The pedal body includes an outer side part and an inner side part. In order to improve safety, the inner side of the pedal body needs to be reinforced, and therefore the pedal insert is arranged along the inner side part of the pedal body.

[0012] Further technical solutions can also be provided, in which a vertical plate is arranged at the inner side part of the pedal body, and the pedal insert is arranged on the vertical plate. In one embodiment, the pedal body includes a flat plate and a vertical plate, wherein the vertical plate is vertically connected to the inner side edge of the flat plate, and the pedal insert is arranged in the vertical plate. As an equivalent embodiment, the pedal insert can also be arranged along the inner side edge of the flat plate; or the pedal insert can be arranged on both the flat plate and the vertical plate.

[0013] The pedal body as the main component of the automobile pedal has a flexible arrangement mode, and can span multiple doors or be arranged below a single door. Correspondingly, the arrangement mode of the steel cable is also flexible and diverse, for example, the steel cable penetrates through the pedal body, or the steel cable is arranged at a certain force-bearing position (such as a frequently stepped part) in the pedal body. Therefore, the length ratio of the steel cable to the pedal body is between 0.4 and 1.

[0014] In order to facilitate the installation of the pedal insert, the pedal insert further includes a plurality of positioning blocks, the positioning blocks are connected to the steel cable at intervals, and positioning pits are arranged on the positioning blocks. The connection mode of the positioning blocks includes at least the following two modes.

[0015] First, the positioning block is integrally formed on the steel cable.

[0016] Secondly, the positioning block comprises a base and a connecting lug, the base and the connecting lug are made separately, and the base and the connecting lug are connected in up and down directions and tightly wrap the steel cable.

[0017] Further, a positioning groove is arranged on the steel cable, and the positioning block is fixedly connected to the positioning groove.

[0018] A pedal forming die comprises an upper die and a lower die, the upper die and the lower die combine to form a pedal die cavity, a plurality of support blocks are arranged on the upper die or the lower die at intervals, one end of the support block extends into the pedal die cavity for supporting a pedal insert placed in the pedal die cavity, the pedal insert comprises a steel cable and a plurality of positioning blocks connected to the steel cable, and the support block can be connected to the positioning block one by one so that the steel cable is kept in a tensioned state during casting.

[0019] An automobile pedal processing method comprises a pre-casting mold, a pedal forming die, a transfer table and a delivery device, the delivery device is used to deliver an article on the transfer table to the pedal forming die, and the specific steps are as follows:

[0020] S01, a steel cable is prepared, and the steel cable is cut into a specified length;

[0021] S02, the cut steel cable is placed in the pre-casting mold, a plurality of positioning blocks arranged at intervals are cast on the steel cable through the pre-casting mold, and the steel cable with the cast positioning blocks becomes a pedal insert;

[0022] S03, the transfer table is provided with positioning holes matched with the positioning blocks, the pedal insert is placed on the transfer table, and the positioning blocks are placed in the corresponding positioning holes;

[0023] S04, the pedal insert on the transfer table is grabbed by the delivery device, and then the pedal insert is delivered to the pedal forming die, the pedal forming die is provided with support blocks, the positioning blocks of the pedal insert are placed on the corresponding support blocks, and the steel cable is pulled and expanded to a tensioned state by the support blocks;

[0024] S05, an automobile pedal wrapped with the pedal insert is cast by the pedal forming die.

[0025] Due to the above characteristics and advantages, the present application can be applied to an automobile pedal, a pedal forming die and an automobile pedal manufacturing method. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic structural view of the automobile pedal in a top view direction;

[0027] Figure 2 is Figure 1 is a schematic diagram of a cross-sectional structure in the A-A direction;

[0028] Figure 3 is Figure 2 is a schematic diagram of a local enlarged structure at K;

[0029] Figure 4 is a schematic diagram of a structure in the axial direction of the pedal body;

[0030] Figure 5 is a schematic diagram of a structure in the front direction of the pedal insert;

[0031] Figure 6 is Figure 5 is a schematic diagram of a cross-sectional structure in the B-B direction;

[0032] Figure 7 is a schematic diagram of a structure in the axial direction of the steel cable;

[0033] Figure 8 is a schematic diagram of a structure in the axial direction of the positioning block, showing an integrated structure of the positioning block;

[0034] Figure 9 is a schematic diagram of an exploded structure of the positioning block, showing a split structure of the positioning block;

[0035] Figure 10 is a schematic diagram of a structure in the axial direction of the pedal forming die;

[0036] Figure 11 is a flowchart of a manufacturing method of an automobile pedal. Embodiment

[0037] The structure of the automobile pedal, the pedal forming die, and the manufacturing method of the automobile pedal using the technical solutions of the present application will be further described below in conjunction with the accompanying drawings. Except for explicitly described equivalent or alternative embodiments, the various embodiment details disclosed below can be selectively applied or combined in one embodiment even if they are not directly related or coordinated in function.

[0038] As Figures 1-3 shown, the present application proposes an automobile pedal, which comprises an aluminum pedal body 1 in the shape of a long strip plate, and a pedal insert 2, wherein the pedal insert 2 comprises a steel cable 3 arranged along the length extension direction of the pedal body 1 in a pre-tensioned state, and the pedal body 1 can wrap the steel cable 3 after solidification.

[0039] It is to be noted that the pedal body 1 in the embodiment refers to a main component of the automobile pedal made of aluminum alloy, and is a main component for bearing the pressing force or side impact force. In order to be integrally formed with the pedal insert 2 mentioned below, the pedal body 1 in the embodiment is made by casting, and the commonly used aluminum alloy grades for casting automobile pedals include A360, AlSi10MnMg, etc. In order to facilitate people to step on the pedal body 1 when getting on and off the vehicle, the pedal body 1 is provided in a strip shape, as shown in Figure 1 As shown in Figure 2 The pedal body 1 has a certain thickness (i.e. plate thickness) in the up-down direction, and the length in the left-right direction is greater than the width in the front-rear direction when viewed from top to bottom, and the pedal body 1 in the embodiment is in a strip trapezoidal shape.

[0040] Further, the automobile pedal is generally installed at the lower part of the side door of the vehicle, and the pedal body 1 includes an outer side part 13 and an inner side part 14, as shown in Figure 2 The pedal body 1 includes a flat plate 11 and a vertical plate 12, wherein the vertical plate 12 is vertically connected to the inner side edge of the flat plate 11, and the pedal body 1 is in a lying L shape when viewed in cross section. The advantage of this arrangement is that the vertical plate 12 standing on the edge can play a certain strengthening role. That is, the inner side edge part of the flat plate 11 and the vertical plate 12 are both located on the inner side part 14 of the pedal body 1, and are close to the important components such as the oil tank, pipelines and connecting lines at the bottom of the vehicle. If the inner side part 14 of the pedal body 1 is broken, the fragments are easy to damage the oil tank, pipelines and connecting lines, thereby causing safety hazards. In order to improve safety, the inner side edge part of the flat plate 11 and the vertical plate 12 of the pedal body 1 need to be strengthened, and for this purpose, the pedal insert 2 is arranged along the inner side part 14 of the pedal body 1. In the embodiment, the pedal insert 2 is arranged on the vertical plate 12.

[0041] In order to improve the overall strength of the automobile pedal, the pedal insert 2 is arranged in the pedal body 1. The steel cable 3 refers to a steel cable which is twisted by a plurality of steel wire strands around a fiber core or a steel wire core. The steel cable 3 has small size and high structural strength, and the tensile strength is 3-10 times of that of aluminum alloy, which can withstand large pressure and impact force. Moreover, the steel cable 3 has certain softness and corrosion resistance, is easy to store and very durable. The combination of the steel cable 3 and aluminum alloy can greatly improve the overall structural strength and durability of the pedal body 1. In the embodiment, one steel cable 3 is arranged on the vertical plate 12 of the pedal body 1. Of course, as an equivalent embodiment, the steel cable 3 can also be arranged on the flat plate 11, or the steel cable 3 can be arranged on the flat plate 11 and the vertical plate 12 at the same time.

[0042] The steel cable 3 and the pedal body 1 are two different materials, and the steel cable 3 itself has certain softness. Therefore, the steel cable 3 is arranged in the pedal body 1 in a pre-tensioned state, that is, the cooled aluminum material is wrapped on the steel cable 3, which enables the steel cable 3 and the pedal body 1 to be fully connected and enables the steel cable to maintain a tensioned state. The pedal body 1 can be transmitted to the steel cable 3 immediately after being subjected to external force. When the long strip-shaped pedal body 1 is subjected to external pressure, the pedal body 1 will first deform in the length direction of the pedal body 1. The arrangement of the steel cable 3 along the length extension direction of the pedal body 1 can well enhance the structural strength of the pedal body 1 in the length direction and ensure the overall shape of the pedal body 1.

[0043] The pedal body 1 is arranged flexibly as a main component of the automobile pedal, and can span multiple doors or be arranged under a single door. Correspondingly, the arrangement of the steel cable 3 is also flexible. In the embodiment, the pedal body 1 spans multiple doors, and the steel cable 3 is arranged in the area of the stress section of the pedal body 1, which is the part that is often stepped on when getting on and off the vehicle and is the area that is most prone to deformation. As an equivalent embodiment, the steel cable 3 can also be arranged through the pedal body 1. Therefore, the ratio of the length of the steel cable 3 to the length of the pedal body 1 is between 0.4 and 1.

[0044] In order to facilitate the installation of the pedal insert 2, the pedal insert 2 further comprises a plurality of positioning blocks 4 which are connected to the steel cable 3 at intervals. The connection mode of the positioning block 4 at least includes the following two modes.

[0045] The first mode is as follows: Figure 8As shown, the positioning block 4 is integrally formed on the steel cable 3. The specific processing method is to prepare a pre-mold, which has a mold cavity corresponding to the shape of the positioning block 4, place the steel cable 3 in the pre-mold, and then inject molten metal liquid (such as aluminum alloy) into the mold cavity. After the positioning block 4 cools down, it can be firmly connected to the steel cable 3. Further, by using the softness of the steel cable 3, the steel cable 3 can be wound into an arc shape and placed in the pre-mold for processing, which is beneficial to reduce the volume of the pre-mold.

[0046] Secondly, as shown in the drawings, the positioning block 4 includes a base 41 and a connecting lug 42, which are respectively made, and the base 41 and the connecting lug 42 are arranged above and below and connected together by connecting screws 43. The connected base 41 and connecting lug 42 tightly wrap the steel cable 3. Figure 9

[0047] Further, in order to facilitate the fixation of the positioning block 4, a positioning groove 31 is provided on the steel cable 3, and the positioning block 4 is fixedly connected to the positioning groove (not shown).

[0048] A pedal forming mold, as shown in the drawings, includes an upper mold 51 and a lower mold 52, which combine to form a pedal mold cavity 50. A plurality of support blocks 53 are arranged on the upper mold 51 or the lower mold 52, one end of each support block 53 extending into the pedal mold cavity 50 for supporting a pedal insert 2 placed in the pedal mold cavity 50. The pedal insert 2 includes a steel cable 3 and a plurality of positioning blocks 4 connected to the steel cable 3. The support blocks 53 can be connected one by one to the positioning blocks 4 so that the steel cable 3 remains in a tensioned state during casting. The advantage of this arrangement is that the steel cable 3 is installed in the pedal forming mold in a taut state, and aluminum alloy is injected into the pedal forming mold to cool and form the pedal body 1. The aluminum alloy of the pedal body 1 wraps the steel cable 3 and keeps the steel cable 3 in a taut state, so that the steel cable 3 does not deform in the pedal body 1. Figure 10

[0049] In order to facilitate the connection of the positioning block 4 and the support block 53 in the mold, a positioning pit 44 is provided on the positioning block 4. After the pedal body 1 is completed, the support block 53 can be withdrawn from the positioning pit 44 so that the pedal body 1 can be taken out of the pedal mold cavity 50.

[0050] A method for processing an automobile pedal, including a pre-mold, a pedal forming mold, a transfer table, and a delivery device for delivering the items on the transfer table to the pedal forming mold. The specific steps are as follows: ​​

[0051] S01, prepare the steel cable 3, cut the steel cable 3 into a specified length;

[0052] S02, place the cut steel cable 3 into the pre-casting mold, cast a plurality of positioning blocks 4 on the steel cable 3 through the pre-casting mold, and the steel cable 3 with the positioning blocks 4 cast thereon becomes a pedal insert 2;

[0053] S03, the transfer table is provided with positioning holes matched with the positioning blocks 4, the pedal insert 2 is placed on the transfer table, and the positioning blocks 4 are placed in the corresponding positioning holes;

[0054] S04, the pedal insert 2 on the transfer table is grabbed by the delivery device, and then the pedal insert 2 is delivered to the pedal forming mold, the pedal forming mold is provided with support blocks 53, the positioning blocks 4 of the pedal insert 2 are correspondingly placed on the support blocks 53, and the steel cable 3 is stretched to a tensioned state by the support blocks 53;

[0055] S05, cast an automobile pedal wrapped with the pedal insert 2 through the pedal forming mold.

Claims

1. A car pedal, comprising an aluminum pedal body, said pedal body being in the shape of a long strip; characterized in that, It also includes a pedal insert, which includes a steel cable arranged along the length of the pedal body in a pre-tensioned state, and the pedal body can wrap around the steel cable after solidification; the pedal insert also includes a plurality of positioning blocks, which are connected to the steel cable at intervals, and positioning pits are provided on the positioning blocks.

2. The automobile pedal according to claim 1, characterized in that, The pedal body includes an outer portion and an inner portion, and the pedal insert is arranged along the inner portion of the pedal body.

3. The automobile pedal according to claim 2, characterized in that, An upright plate is provided on the inner side of the pedal body, and the pedal insert is provided on the upright plate.

4. The automobile pedal according to any one of claims 1 to 3, characterized in that, The ratio of the length of the steel cable to the length of the pedal body is 0.4 to 1.

5. The automobile pedal according to claim 1, characterized in that, The positioning block is integrally formed on the steel cable.

6. The automobile pedal according to claim 1, characterized in that, The positioning block includes a base and a connecting ear, which are manufactured separately. The base and the connecting ear are connected vertically and tightly wrap around the steel cable.

7. The automobile pedal according to claim 1, characterized in that, The steel cable is provided with a positioning groove, and the positioning block is fixedly connected to the positioning groove.

8. A pedal forming mold, comprising an upper mold and a lower mold, wherein the upper mold and the lower mold are combined to form a pedal mold cavity, characterized in that, A number of spaced support blocks are provided on the upper or lower mold. One end of each support block extends into the pedal mold cavity to support the pedal insert placed in the pedal mold cavity. The pedal insert includes a steel cable and a number of positioning blocks connected to the steel cable. The support blocks can be connected to the positioning blocks one by one to keep the steel cable taut during casting.

9. A method for processing automotive pedals, characterized in that, It includes a pre-cast mold, a pedal forming mold, a transfer platform, and a delivery device. The delivery device is used to deliver items from the transfer platform to the pedal forming mold. The specific steps are as follows: S01, Prepare the steel cable and cut it to the specified length; S02, the cut steel cable is placed in the pre-cast mold, and several spaced positioning blocks are cast on the steel cable through the pre-cast mold. The steel cable with the positioning blocks becomes the pedal insert. S03, the transfer platform is provided with a positioning hole that matches the positioning block, the pedal insert is placed on the transfer platform, and the positioning block is placed in the corresponding positioning hole; S04, the delivery device grabs the pedal insert on the transfer platform and then delivers the pedal insert to the pedal forming mold. The pedal forming mold is provided with a support block. The positioning block of the pedal insert is placed on the support block. The steel cable is stretched to a taut state by the support block. S05, the car pedal containing the pedal insert is cast using the pedal molding mold.

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