Steel-plastic composite pedal and automobile brake pedal assembly

Abstract

The utility model provides a kind of steel plastic composite pedal, including lining bone plate, positioning hole and outer coating, lining bone plate includes framework plate body, the wing plate is formed in the both sides bending of framework plate body, several glue holes are set up on bone plate body, connecting hole is set up on bone plate body and wing plate, positioning hole is set on lining bone plate, positioning hole is at least one, outer coating is polypropylene and glass fiber composite material, outer coating is covered on lining bone plate by injection molding, the side of outer coating is equipped with several antiskid protrusions, the other side of outer coating is symmetrically equipped with mounting plate, it solves the problem that existing technology exists that aluminum alloy pedal heat transfer is fast and prone to expansion deformation, which leads to pedal travel change and brake failure.

Description

Technical Field

[0001] This utility model relates to the field of brake pedal structure, and in particular to a steel-plastic composite pedal and an automotive brake pedal assembly. Background Technology

[0002] The brake pedal is the core operating device of a car's braking system. It is used by the driver to decelerate or stop the vehicle. The pedal is usually made of aluminum alloy and is produced by die casting and machining during the manufacturing process.

[0003] Although aluminum alloys are lighter than steel, high-strength aluminum alloys are often more expensive. Furthermore, aluminum alloys conduct heat quickly, rapidly transferring heat to the pedal surface and passenger compartment during continuous braking. In hot summer conditions, this can raise the passenger compartment temperature, affecting driving comfort. Additionally, high temperatures can cause the pedal to expand and change its travel, potentially leading to brake lag or failure, and in extreme cases, even pedal jamming, endangering driving safety. Therefore, a new type of pedal is needed to provide drivers with both comfort and safety. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a steel-plastic composite pedal to solve the problem that aluminum alloy pedals in the existing technology are prone to expansion and deformation due to rapid heat transfer, which leads to changes in pedal stroke and brake failure.

[0005] According to an embodiment of this utility model, a steel-plastic composite pedal includes an inner lining plate, positioning holes, and an outer covering layer. The inner lining plate includes a skeleton plate body, with both sides of the skeleton plate body bent to form wing plates. The skeleton plate body has several glue inlet holes, and both the skeleton plate body and the wing plates have connection holes. Positioning holes are provided on the inner lining plate, and there is at least one positioning hole. The outer covering layer is a composite material of polypropylene and glass fiber. The outer covering layer is injection molded onto the inner lining plate. One side of the outer covering layer has several anti-slip protrusions, and the other side of the outer covering layer has symmetrical mounting plates.

[0006] Compared to existing technologies, this invention offers the following advantages: By injection molding the outer layer onto the inner lining plate, the inner lining skeleton enhances the strength of the molded pedal. Part of the polypropylene and glass fiber composite material of the outer layer enters the connecting holes on the inner lining plate, connecting the outer layers on both sides of the inner lining plate and increasing the coverage strength of the outer layer on the inner lining plate, making it less prone to gaps. The polypropylene and glass fiber composite material insulates heat, ensuring driver comfort during driving. Simultaneously, the low coefficient of thermal expansion of the polypropylene and glass fiber composite material minimizes changes in the braking stroke during pedal application, ensuring safe and timely braking.

[0007] Furthermore, a positioning boss is also provided on the side where the anti-slip protrusion is located.

[0008] Furthermore, a reinforcing plate is provided between each mounting plate and the outer cladding layer.

[0009] Furthermore, reinforcing ribs are provided on the sidewalls of the outer cladding.

[0010] Furthermore, the inner lining frame is made of iron.

[0011] This embodiment also provides an automotive brake pedal assembly, including the aforementioned steel-plastic composite pedal, and further including: a mounting base, the top of which is symmetrically provided with connecting plates, the connecting plates being rotatably connected to the mounting plates of the steel-plastic composite pedal via pins, and rollers being rotatably provided between the two mounting plates via a rotating shaft.

[0012] Furthermore, the outer cover has symmetrically provided limiting plates on the side facing the mounting base, and one side of the roller is inserted between the two limiting plates.

[0013] Furthermore, a limiting boss is provided on the side of the outer cladding facing the mounting plate, and an abutment block is provided on the mounting base, with a threaded hole on the abutment block. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an overall structural diagram from another perspective in an embodiment of this utility model; Figure 3 This is a schematic diagram of the inner lining plate structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the brake pedal assembly structure according to an embodiment of the present invention.

[0015] Figure 5 This is a schematic diagram of the roller installation according to an embodiment of the present utility model.

[0016] In the above attached figures: 1. Bone plate body; 2. Wing plate; 3. Glue inlet hole; 4. Connecting hole; 5. Positioning hole; 6. Anti-slip protrusion; 7. Mounting plate; 8. Positioning boss; 9. Reinforcing plate; 10. Reinforcing rib; 11. Mounting base; 12. Connecting plate; 13. Roller; 14. Limiting plate; 15. Limiting boss; 16. Threaded hole. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments: like Figure 1-3As shown, a steel-plastic composite pedal includes an inner lining plate, positioning holes 5, and an outer covering layer. The inner lining plate includes a skeleton plate body, with wing plates 2 formed by bending the two sides of the skeleton plate body. Several glue inlet holes 3 are provided on the skeleton plate body 1, and connecting holes 4 are provided on both the skeleton plate body 1 and the wing plates 2. Positioning holes 5 are provided on the inner lining plate, with at least one positioning hole 5. The outer covering layer is a composite material of polypropylene and glass fiber, and is injection molded onto the inner lining plate. Several anti-slip protrusions 6 are provided on one side of the outer covering layer, and mounting plates 7 are symmetrically provided on the other side. This steel-plastic composite pedal is obtained through injection molding. Specifically, during the production of this device, the inner lining plate is positioned through the positioning holes 5, and then polypropylene and glass fiber composite material is injection molded onto the outer surface of the inner lining plate using an injection molding machine to obtain the steel-plastic composite pedal. The ratio of polypropylene to glass fiber can be 7:3 (with a deviation of ±5% for each material), or a suitable ratio can be selected within a limited range as needed. It should be noted that designing the mold according to the product shape is a conventional and mature technique in the injection molding field. The specific structure of the mold is not within the scope of protection of this application and will not be elaborated here. The molten polypropylene and glass fiber composite material in the mold covers the outer surface of the inner lining plate through the glue inlet on the lining plate body 1 and is finally shaped. The anti-slip protrusions 6 ensure timely and effective foot pedal application and prevent slippage. The molded outer layer covers the outer surface of the inner lining plate, and part of the outer layer material enters the connection hole 4 between the lining plate body 1 and the wing plate 2, so that the outer layers on both sides of the inner lining plate are connected through the connection hole 4, thereby improving the coverage strength of the outer layer on the inner lining plate. In use, this pedal is hinged to a mounting base 11 by two mounting plates 7, and the whole is in an inclined state to facilitate the driver's pedal operation. When the driver steps on the steel-plastic composite pedal, the steel-plastic composite pedal rotates around the hinge end and presses against the preset braking mechanism, changing the braking state of the vehicle. The braking mechanism is existing technology and will not be elaborated here.

[0018] The molded steel-plastic composite pedal has an embedded inner lining plate, which improves the strength of the entire pedal and meets the needs of high frequency and pedaling. The outer covering layers on both sides of the inner lining plate are connected through connecting holes 4 to achieve a better covering effect. When the driver is driving, due to the heat insulation of polypropylene and glass fiber composite materials, the temperature is not easily transferred to the driver's cabin, and the driver will not feel heat when stepping on the pedal, resulting in a better experience. The inner lining skeleton inside the pedal improves the overall strength, and the polypropylene and glass fiber composite materials ensure that the pedal has a low coefficient of thermal expansion, avoiding changes in the pedal stroke due to expansion, making the pedal braking timely and stable, and ensuring the driver's safe driving.

[0019] like Figure 1-2As shown, a positioning boss 8 is further provided on the side where the anti-slip protrusion 6 is located. The positioning boss 8 is a protruding structure set on the side of the anti-slip protrusion 6. When the driver's foot steps on the side of the anti-slip protrusion 6 of this pedal, the positioning boss 8 blocks and positions the heel, so that the driver's foot is in a position that is convenient for stepping on the pedal, so as to achieve the purpose of timely and effective braking.

[0020] like Figure 1-2 As shown, furthermore, a reinforcing plate 9 is provided between each mounting plate 7 and the outer cover. Specifically, the reinforcing plate 9 is triangular. The triangular reinforcing plate 9 is provided between the outer cover and the mounting plate 7, extending from the mounting plate 7 to the end of the outer cover, to improve the strength of the entire pedal to withstand the driver's long-term pedaling action.

[0021] like Figure 2 As shown, furthermore, reinforcing ribs 10 are provided on the sidewalls of the outer cladding. In this embodiment, the reinforcing ribs 10 include at least one transverse rib and two longitudinal ribs. The transverse rib is disposed between the two reinforcing plates 9, and the longitudinal ribs are disposed perpendicular to the transverse rib and extend toward the end of the outer cladding. The reinforcing ribs 10 are located at the force application point where the driver steps on the pedal, ensuring that the end of the pedal does not deform or bend, reducing the risk of fatigue cracks, and extending the service life of the steel-plastic composite pedal.

[0022] Furthermore, the inner lining skeleton is made of iron. By embedding an iron inner lining skeleton inside the pedal made of polypropylene and glass fiber composite material, the overall rigidity of the pedal is improved. At the same time, it acts as a support layer, transferring concentrated stress from the plastic matrix to the inner lining skeleton and preventing cracking.

[0023] like Figure 4-5 As shown, this embodiment also provides an automotive brake pedal assembly, including the aforementioned steel-plastic composite pedal, and further including: a mounting base 11, with connecting plates 12 symmetrically arranged on the top of the mounting base 11. The connecting plates 12 are rotatably connected to the mounting plates 7 of the steel-plastic composite pedal via pins, and rollers 13 are rotatably arranged between the two mounting plates 7 via a rotating shaft. The steel-plastic composite pedal is hinged to the mounting base 11 and rotates. When the driver presses the pedal, the steel-plastic composite pedal rotates around its hinge end, thereby driving the rollers 13 on the steel-plastic composite pedal to press the corresponding braking mechanism and complete the braking operation. The specific braking mechanism is existing technology. For example, when the brake pedal is pressed, the force is transmitted to the master cylinder through a linkage. The master cylinder converts the mechanical force into hydraulic pressure, and the brake fluid is delivered to the brakes of each wheel through pipelines.

[0024] like Figure 5As shown, furthermore, the outer cover is symmetrically provided with limiting plates 14 on the side facing the mounting base 11, and one side of the roller 13 is engaged between the two limiting plates 14. The roller 13 is rotatably disposed between the two mounting plates 7 via a rotating shaft. The limiting plates 14 restrict the roller 13 from making large displacements in the horizontal direction, so as to ensure that the roller 13 can be pressed down into a predetermined area to achieve stable braking.

[0025] like Figure 4 As shown, furthermore, a limiting boss 15 is provided on the side of the outer covering facing the mounting plate 7, and an abutment block is provided on the mounting base 11, with a threaded hole 16 on the abutment block. Specifically, the threaded hole 16 on the abutment block is inclined in the length direction to the plane of the top of the mounting base 11. An adjusting rod can be screwed onto the abutment block. By rotating the adjusting rod, it can be screwed into or out of the threaded hole 16 of the abutment block to adjust the inclination state of the limiting boss 15 when it abuts against the adjusting rod, thereby satisfying the contact state between the feet of different people and the steel-plastic composite pedal when they naturally step on it, thus satisfying comfort.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A steel-plastic composite pedal, characterized in that, include: The inner lining plate includes a skeleton plate body, the two sides of the skeleton plate body are bent to form wing plates (2), the bone plate body (1) is provided with several glue inlet holes (3), and the bone plate body (1) and the wing plates (2) are provided with connection holes (4). Positioning hole (5) is provided on the inner lining bone plate, and there is at least one positioning hole (5); The outer cover is a composite material of polypropylene and glass fiber. The outer cover is injection molded onto the inner lining plate. One side of the outer cover has several anti-slip protrusions (6), and the other side of the outer cover has symmetrical mounting plates (7).

2. The steel-plastic composite pedal as described in claim 1, characterized in that, A positioning boss (8) is also provided on the side where the anti-slip protrusion (6) is located.

3. The steel-plastic composite pedal as described in claim 1, characterized in that, Each mounting plate (7) is provided with a reinforcing plate (9) between itself and the outer cladding.

4. The steel-plastic composite pedal as described in claim 3, characterized in that: The outer cladding has reinforcing ribs (10) on its sidewalls.

5. A steel-plastic composite pedal as described in claim 1, characterized in that, The inner lining frame is made of iron.

6. A car brake pedal assembly, characterized in that, The steel-plastic composite pedal according to any one of claims 1-5 further includes: a mounting base (11), the top of the mounting base (11) is symmetrically provided with connecting plates (12), the connecting plates (12) are rotatably connected to the mounting plates (7) of the steel-plastic composite pedal by means of pins, and rollers (13) are rotatably provided between the two mounting plates (7) by means of a rotating shaft.

7. The automotive brake pedal assembly as described in claim 6, characterized in that: The outer cover is symmetrically provided with limiting plates (14) on the side facing the mounting base (11), and one side of the roller (13) is inserted between the two limiting plates (14).

8. A car brake pedal assembly as described in claim 6 or 7, characterized in that: The outer cover has a limiting boss (15) on the side facing the mounting plate (7), and the mounting base (11) has an abutment block with a threaded hole (16).

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