A heavy truck seat

Abstract

The application discloses a heavy truck seat, which comprises a backrest framework, a cushion framework, a seat fork arm, a lower frame and two seat guide rails, the bottom end of the backrest framework is connected to one end of the cushion framework, the low end of the cushion framework is connected to the top end of the seat fork arm, the low end of the seat fork arm is connected to the top end of the lower frame, the low end of the lower frame is slidably connected to the top end of the seat guide rail, and the bottom end of the seat guide rail is connected to the vehicle body; the first connecting piece is punched and formed by using 2.5 mm steel material, the bending modulus is increased by designing a suitable turn-up height, the Y-direction rigidity of the seat is ensured, the lower part of the connecting piece is connected to the lower frame through bolts, and the upper part of the first connecting piece is welded to the angle adjuster on the backrest framework, so that the connecting rigidity of the backrest framework and the cushion framework is ensured, and the seat backrest is prevented from shaking greatly during the driving of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and more particularly to a heavy-duty truck seat. Background Technology

[0002] Driver seat comfort is one of the most critical issues in the design and development of heavy-duty trucks. Heavy-duty truck seat comfort is divided into static comfort and dynamic comfort. Static comfort is related to seat shape, material properties, and stitching techniques, while dynamic comfort is related to the vibration characteristics of the seat assembly. The vibration characteristics of the seat are mainly determined by its natural frequency; therefore, designing a reasonable seat modal frequency is an important method to improve the dynamic comfort of the seat.

[0003] To effectively improve seat dynamic comfort, the heavy-duty truck industry currently typically uses methods such as thickening the seat cushion and backrest foam. This method has some effect on seat vibration reduction, but it increases material usage and cost. Another method is to use a suspension damping system or a fully damped seat, but this requires significant installation space. Neither of these methods fundamentally solves the seat resonance problem.

[0004] To address this issue, the inventors designed a heavy-duty truck seat that reduces the risk of seat resonance, thereby improving the seat's dynamic comfort and fundamentally solving the problem of seat resonance. Summary of the Invention

[0005] The purpose of this invention is to provide a driver's seat assembly structure that reduces the risk of seat resonance, thereby improving seat dynamic comfort.

[0006] The present invention solves the technical problem by adopting the following technical solution: a heavy truck seat, comprising a backrest frame, a seat cushion frame, a seat fork arm, a lower frame, and two seat rails, wherein the bottom end of the backrest frame is connected to one end of the seat cushion frame, the bottom end of the seat cushion frame is connected to the top end of the seat fork arm, the bottom end of the seat fork arm is connected to the top end of the lower frame, the bottom end of the lower frame is slidably connected to the top end of the seat rails, and the bottom end of the seat rails is connected to the vehicle body;

[0007] The backrest frame is connected to the seat cushion frame via a first connector, which is used to ensure the Y-axis stiffness of the seat.

[0008] Optionally, the number of the first connectors is two, respectively disposed on the left and right sides of the backrest frame and the seat cushion frame. The first connectors are stamped from 2.4-2.8mm steel. The first connectors are provided with multiple connection holes and adjustment holes. The first connectors are connected to the seat cushion frame through the connection holes and to the backrest frame through the adjustment holes. The backrest frame can rotate within a certain range through the adjustment holes.

[0009] Optionally, the seat rail is connected to the vehicle body via a second connector. The second connector is rectangular in shape and has three connecting holes. The seat rail is connected to the vehicle body via the three connecting holes and bolts. There are four second connectors, which are respectively located at the front and rear ends of the bottom of the seat rail.

[0010] Optionally, the seat guide rail is provided with a sheet metal layer at the body bolt mounting position. The sheet metal layer is connected to the seat guide rail by welding. The sheet metal layer is made of sheet metal with a thickness of 1.4-1.6mm.

[0011] Optionally, a turntable is also included, which is disposed between the lower frame and the seat guide rail. The top of the turntable is connected to the bottom of the lower frame, and the bottom of the turntable is slidably connected to the top of the seat guide rail. The turntable can drive the lower frame, thereby driving the entire seat to rotate within a certain range.

[0012] Optionally, the lower frame is connected to the turntable via a third connector. There are four third connectors, which are respectively located at the four corners of the connection between the lower frame and the turntable. The third connectors are used to ensure that the seat cushion height meets the driving requirements.

[0013] Optionally, the third connector is formed by bending 2.8-3.2mm steel. The third connector is L-shaped and includes a first steel plate, a second steel plate, and two connecting steel plates. One end of the first steel plate is connected to one end of the second steel plate. The first steel plate and the second steel plate are perpendicularly connected. The two connecting steel plates are respectively connected to the upper and lower ends of the second steel plate near the first steel plate. The connecting steel plates are perpendicularly arranged to the second steel plate and the first steel plate.

[0014] Optionally, the first steel plate has a first through hole at a position away from the second steel plate, the second steel plate has a second through hole at a position away from the first steel plate, and the connecting steel plate has a third through hole. The connecting steel plate at the upper end of the second steel plate is connected to the lower frame through the third through hole, and the connecting steel plate at the lower end of the second steel plate is connected to the turntable through the third through hole.

[0015] Optionally, the first connector is provided with a flange, which includes a first flange and a second flange. The first flange is located on the front side of the first connector, and the second flange is located on the rear side of the first connector. A first through groove and a second through groove are respectively provided between the upper and lower ends of the first flange and the second flange. The bottom end of the backrest frame can be connected to the first connector through the first through groove, and the second through groove can snap the first connector onto the seat cushion frame.

[0016] Optionally, the lower end of the backrest frame is provided with a rotating shaft that can rotate within a certain range. The two ends of the rotating shaft are respectively connected to the adjustment holes of the two first connectors. The backrest frame and the seat cushion frame are also provided with multiple weight reduction holes.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention uses 2.5mm steel to stamp the first connector, and designs an appropriate flange height to increase the bending modulus and ensure the Y-direction stiffness of the seat. The lower part of the connector is connected to the lower frame by bolts, and the upper part of the first connector is welded to the angle adjuster on the backrest frame. In this way, the connection stiffness of the backrest frame and the seat cushion frame is ensured, and the seat backrest is prevented from shaking significantly during vehicle operation.

[0019] 2. By employing a second connector, the present invention increases the stability of the connection between the seat guide rail and the vehicle floor, further reducing vibration.

[0020] 3. This invention improves the structural rigidity near the seat guide rail mounting point by adding a 1.5mm thick sheet metal cladding at the seat guide rail bolt mounting location. The cladding is connected to the seat guide rail by welding. This prevents the seat from swaying due to insufficient installation rigidity.

[0021] 4. The present invention slidably connects the bottom end of the turntable to the top of the seat guide rail, and uses the turntable to drive the lower frame, thereby driving the entire seat to rotate within a certain range.

[0022] 5. By using a 3mm steel plate to bend and form the third connector, this invention not only ensures the Y-axis stiffness of the seat while reducing development costs, but also ensures that the seat cushion height meets driving requirements through the setting of the third connector.

[0023] 6. This invention designs a connector and a third connector between the seat turntable and the lower frame, which are made of steel plate by bending. Through structural optimization, the amount of material used is reduced, saving development costs. At the same time, this connector has large stiffness in the X and Y directions, which makes a significant contribution to the modal improvement of the seat assembly and effectively improves the dynamic comfort of the seat.

[0024] 7. This invention designs a connector and a first connector between the seat cushion frame and the backrest frame. The optimal thickness and flange height of the connector are determined by modal optimization, which ensures the connection rigidity between the backrest frame and the seat cushion frame and avoids significant shaking of the seat back during vehicle operation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2This is a schematic diagram of the structure of the first connector in this invention;

[0027] Figure 3 This is a schematic diagram of the structure of the second connector in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the third connector in this invention;

[0029] The markings in the diagram are as follows: 1-Backrest frame; 2-Seat cushion frame; 3-Seat fork arm; 4-Lower frame; 5-Seat guide rail; 6-First connector; 7-Second connector; 8-Turntable; 9-Third connector; 11-Shaft; 51-Sheet metal layer; 61-Connecting hole; 62-Adjusting hole; 91-First steel plate; 92-Second steel plate; 93-Connecting steel plate; 94-First through hole; 95-Second through hole; 96-Third through hole; 631-First flange; 632-Second flange; 633-First through groove; 634-Second through groove. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0031] Example 1

[0032] This embodiment provides a heavy truck seat, including a backrest frame 1, a seat cushion frame 2, a seat fork arm 3, a lower frame 4, and two seat rails 5. The bottom end of the backrest frame is connected to one end of the seat cushion frame 2, the bottom end of the seat cushion frame 2 is connected to the top end of the seat fork arm 3, the bottom end of the seat fork arm 3 is connected to the top end of the lower frame 4, the bottom end of the lower frame 4 is slidably connected to the top end of the seat rails 5, and the bottom end of the seat rails 5 is connected to the vehicle body.

[0033] The backrest frame 1 is connected to the seat cushion frame 2 via a first connector 6, which is used to ensure the Y-axis stiffness of the seat.

[0034] In a further embodiment of this example, there are two first connectors 6 respectively disposed on the left and right sides of the backrest frame 1 and the seat cushion frame 2. The first connectors 6 are formed by stamping 2.4-2.8mm steel. The first connectors 6 are provided with multiple connecting holes 61 and adjusting holes 62. The first connectors 6 are connected to the seat cushion frame 2 through the connecting holes 61 and to the backrest frame 1 through the adjusting holes 62. The backrest frame 1 can rotate within a certain range through the adjusting holes 62.

[0035] The first connecting piece 6 between the seat cushion frame 2 and the backrest frame 1 is extremely important. If the connection rigidity is insufficient, the seat back will vibrate significantly during vehicle operation, affecting ride comfort and driver visibility. The first connecting piece 6 shown in the figure is made of 2.5mm steel and is stamped. The appropriate flange height is designed to increase the bending modulus and ensure the seat's Y-axis rigidity. The lower part of the connecting piece is connected to the lower frame 4 by bolts, and the upper part of the first connecting piece 6 is welded to the angle adjuster on the backrest frame 1. In this way, the connection rigidity between the backrest frame 1 and the seat cushion frame 2 is ensured. There is one of these first connecting pieces 6 on each side.

[0036] In a further embodiment of this invention, the seat rail 5 is connected to the vehicle body via a second connector 7. The second connector 7 is rectangular in shape and has three connecting holes. The seat rail 5 is connected to the vehicle body via the three connecting holes and bolts on the second connector 7. There are four second connectors 7, which are respectively located at the front and rear ends of the bottom of the seat rail 5.

[0037] The second connector 7 between the vehicle body and the seat rail 5 adopts a cuboid structure and is bolted to connect the seat rail 5 and the vehicle floor. The second connector 7 has a hole at the front, middle and rear to increase the stability of the connection between the seat rail 5 and the vehicle floor. There are four second connectors 7 in total.

[0038] In a further embodiment of this example, the seat guide rail 5 is provided with a sheet metal layer 51 at the body bolt mounting position. The sheet metal layer 51 is connected to the seat guide rail 5 by welding. The sheet metal layer 51 is made of sheet metal with a thickness of 1.4-1.6mm.

[0039] A 1.5mm thick sheet metal layer 51 is added to the bolt mounting position of the seat guide rail 5. The layer is connected to the seat guide rail 5 by welding, which can improve the structural rigidity near the mounting point of the seat guide rail 5 and prevent the seat from swaying due to insufficient installation rigidity.

[0040] A further embodiment of this invention also includes a turntable 8, which is disposed between the lower frame 4 and the seat guide rail 5. The top end of the turntable 8 is connected to the bottom end of the lower frame 4, and the bottom end of the turntable 8 is slidably connected to the top end of the seat guide rail 5. The turntable 8 can drive the lower frame 4, thereby driving the entire seat to rotate within a certain range.

[0041] In a further embodiment of this invention, the lower frame 4 is connected to the turntable 8 via a third connector 9. There are four third connectors 9, which are respectively located at the four corners of the connection between the lower frame 4 and the turntable 8. The third connectors 9 are used to ensure that the height of the seat cushion meets the driving requirements.

[0042] In a further embodiment of this example, the third connector 9 is formed by bending 2.8-3.2mm steel. The third connector 9 is generally L-shaped and includes a first steel plate 91, a second steel plate 92, and two connecting steel plates 93. One end of the first steel plate 91 is connected to one end of the second steel plate 92, and the first steel plate 91 and the second steel plate 92 are vertically connected. The two connecting steel plates 93 are respectively connected to the upper and lower ends of the second steel plate 92 near the first steel plate 91, and the connecting steel plates 93 are vertically arranged with the second steel plate 92 and the first steel plate 91.

[0043] In a further embodiment of this example, the first steel plate 91 is provided with a first through hole 94 at a position away from the second steel plate 92, the second steel plate 92 is provided with a second through hole 95 at a position away from the first steel plate 91, the connecting steel plate 93 is provided with a third through hole 96, the connecting steel plate 93 at the upper end of the second steel plate 92 is connected to the lower frame 4 through the third through hole 96, and the connecting steel plate 93 at the lower end of the second steel plate 92 is connected to the turntable 8 through the third through hole 96.

[0044] To ensure that the seat cushion height meets the driving requirements, the turntable 8 and the lower frame 4 are connected by the third connector 9 shown in the figure. This connector is made of 3mm steel plate bent into shape. After multiple optimizations, the amount of material used has been reduced, which ensures the Y-axis rigidity of the seat while reducing development costs. There are a total of four connectors.

[0045] In a further embodiment of this example, the first connector 6 is provided with a flange, which includes a first flange 631 and a second flange 632. The first flange 631 is disposed on the front side of the first connector 6, and the second flange 632 is disposed on the rear side of the first connector 6. A first through groove 633 and a second through groove 634 are respectively provided between the upper and lower ends of the first flange 631 and the second flange 632. The bottom end of the backrest frame 1 can be connected to the first connector 6 through the first through groove 633, and the second through groove 634 can snap the first connector 6 onto the seat cushion frame 2.

[0046] In a further embodiment of this embodiment, the lower end of the backrest frame 1 is provided with a rotating shaft 11 that can rotate within a certain range. The two ends of the rotating shaft 11 are respectively connected to the adjustment holes 62 of the two first connecting members 6. The backrest frame 1 and the seat cushion frame 2 are also provided with a plurality of weight reduction holes.

[0047] The order of the above embodiments is for ease of description only and does not represent the superiority or inferiority of the embodiments. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heavy duty truck seat, characterized by, The seat back skeleton is connected to the seat cushion skeleton through a first connecting piece, the first connecting piece is used to ensure the Y-direction rigidity of the seat, the number of the first connecting pieces is two, which are arranged on the left and right sides of the seat back skeleton and the seat cushion skeleton respectively, the first connecting piece is formed by stamping 2.4-2.8 mm steel material, a plurality of connecting holes and adjusting holes are arranged on the first connecting piece, the first connecting piece is connected to the seat cushion skeleton through the connecting holes, the first connecting piece is connected to the seat back skeleton through the adjusting holes, and the seat back skeleton can rotate in a certain range through the adjusting holes. The seat guide rail is connected to the vehicle body through a second connecting piece, the second connecting piece is in the shape of a rectangle as a whole, three connecting holes are arranged on the second connecting piece, the seat guide rail is connected to the vehicle body through the three connecting holes and bolts on the second connecting piece, the number of the second connecting pieces is four, and the second connecting pieces are arranged at the front and rear ends of the bottom surface of the seat guide rail respectively. A rotating disc is further arranged between the lower frame and the seat guide rail, the top end of the rotating disc is connected to the lower end of the lower frame, and the bottom end of the rotating disc is slidably connected to the top end of the seat guide rail; the rotating disc can drive the lower frame to rotate in a certain range, thereby driving the whole seat to rotate in a certain range. The lower frame is connected to the rotating disc through a third connecting piece, the number of the third connecting pieces is four, the third connecting pieces are arranged at the four corners of the connecting position of the lower frame and the rotating disc respectively, and the third connecting pieces are used to ensure that the height of the seat cushion position meets the driving requirements. The third connecting piece is formed by bending 2.8-3.2 mm steel material, the third connecting piece is in the shape of L as a whole, and the third connecting piece comprises a first steel plate, a second steel plate and two connecting steel plates; one end of the first steel plate is connected to one end of the second steel plate, the first steel plate is connected to the second steel plate perpendicularly, the two connecting steel plates are connected to the second steel plate at the upper and lower ends close to the first steel plate respectively, and the connecting steel plates are arranged perpendicularly between the second steel plate and the first steel plate. A first through hole is arranged on the first steel plate away from the second steel plate, a second through hole is arranged on the second steel plate away from the first steel plate, and a third through hole is arranged on the connecting steel plate; the connecting steel plate at the upper end of the second steel plate is connected to the lower frame through the third through hole, and the connecting steel plate at the lower end of the second steel plate is connected to the rotating disc through the third through hole. A layer of iron sheet is arranged at the bolt mounting position of the seat guide rail on the vehicle body, the iron sheet is connected to the seat guide rail through welding, and the thickness of the iron sheet is 1.4-1.6 mm. ​ 2. The heavy-duty truck seat of claim 1, wherein, ​ 3. The heavy duty truck seat of claim 1, wherein, The first connecting piece is provided with a flange, which comprises a first flange and a second flange, the first flange is arranged on the front side of the first connecting piece, and the second flange is arranged on the rear side of the first connecting piece, first and second through grooves are respectively arranged between the upper and lower ends of the first and second flanges, the backrest framework bottom end is connected with the first connecting piece through the first through groove, and the second through groove can clamp the first connecting piece on the cushion framework.

4. The heavy duty truck seat of claim 3, wherein, The lower end of the backrest framework is provided with a rotating shaft which can rotate within a certain range, the two ends of the rotating shaft are respectively connected with the adjusting holes of the two first connecting pieces, and a plurality of lightening holes are arranged on the backrest framework and the cushion framework.

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