Electric adjusting seat with single-spring damping structure

Abstract

The invention discloses an electric adjusting seat with a single-spring damping structure, which comprises a seat upper assembly, the seat upper assembly is fixed on a seat framework, a damping shell is fixed on the lower side of the seat framework, a damping mechanism is arranged in the damping shell, and the damping shell can move along the outer wall direction of the damping mechanism. An electric control system used for driving the damping mechanism is arranged in the seat framework and the damping shell, and the damping mechanism is fixed to the base. When the electric control system drives the damping mechanism to work, the damping shell, the upper assembly and the seat framework can move downwards; the damping mechanism comprises a damping inner shell, a damping lower machine cover is fixed to the lower side of the damping inner shell and fixed to the middle of the base, a damping upper machine cover is fixed to the upper side of the damping inner shell, a damping spring is arranged between the damping lower machine cover and the damping upper machine cover, and a spring shaft sleeve is arranged at the upper end of the damping spring. The output end of the electric control system penetrates through the damping upper machine cover and then is screwed with the spring shaft sleeve, and the electric control system is used for driving the spring shaft sleeve to move up and down.

Description

Technical Field

[0001] The invention relates to the technical field of seats, and in particular to an electric adjustment seat with a single spring vibration reduction structure. Background Art

[0002] Currently, most seats in the commercial vehicle market use airbags with external air sources for vibration reduction and traditional mechanical operations to control seat travel. The process is cumbersome and the failure rate is high. Electric seats have a low market penetration rate and also face problems of high costs, complex parts structure and control logic.

[0003] like Fig.11 As shown, the conventional airbag vibration reduction must include the following supporting top frame assembly 300, vibration damper 500, vibration airbag 410, connecting rod assembly 220 and base assembly assembly 100. This type of seat structure has many functional parts and is complex to control. Since the connecting rod motion design principle cannot achieve highly accurate control, the vibration reduction requires a large space in the cab, which cannot meet the current trend of electric vehicle control. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an electrically adjustable seat with a single spring damping structure, which seat does not require an on-board air source, thereby achieving lightweight and electrification of commercial vehicle seats.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] An electric adjustment seat with a single spring damping structure, comprising:

[0007] The upper seat assembly is fixed on the seat frame, a shock-absorbing shell is fixed on the lower side of the seat frame, a shock-absorbing mechanism is arranged inside the shock-absorbing shell, the shock-absorbing shell can move along the outer wall direction of the shock-absorbing mechanism, an electric control system for driving the shock-absorbing mechanism is arranged inside the seat frame and the shock-absorbing shell, and the shock-absorbing mechanism is fixed on the base; when the electric control system drives the shock-absorbing mechanism to work, the shock-absorbing shell, the upper assembly and the seat frame will move downward.

[0008] In one or more embodiments of the present invention, the shock absorbing mechanism includes a shock absorbing inner shell, a shock absorbing lower cover is fixed to the lower side of the shock absorbing inner shell, the shock absorbing lower cover is fixed to the middle of the base, and a shock absorbing upper cover is fixed to the upper side of the shock absorbing inner shell, a shock absorbing spring is arranged between the shock absorbing lower cover and the shock absorbing upper cover, a spring sleeve is arranged at the upper end of the shock absorbing spring, the output end of the electric control system passes through the shock absorbing upper cover and is screwed to the spring sleeve, and the electric control system is used to drive the spring sleeve to move up and down.

[0009] In one or more embodiments of the present invention, the edges of the shock-absorbing lower cover and the shock-absorbing upper cover both have limiting edges, and the upper and lower ends of the shock-absorbing inner shell are respectively engaged with the inner sides of the limiting edges; a spring groove is provided on the inner side of the upper section of the shock-absorbing lower cover, and the shock-absorbing spring is placed in the spring groove.

[0010] In one or more embodiments of the present invention, the inner wall of the shock-absorbing inner shell has a plurality of vertical ribs, and the outer sides of the shock-absorbing lower cover and the shock-absorbing upper cover are provided with a plurality of slots, and the slots are adapted to the vertical ribs.

[0011] In one or more embodiments of the present invention, a limiting groove is vertically provided on the outer edge of the spring sleeve, and the limiting groove is matched with one of the vertical ribs.

[0012] In one or more embodiments of the present invention, a sleeve retainer is embedded in the middle of the upper side of the shock-absorbing upper cover, a guide sleeve is rotatably arranged in the sleeve retainer, the upper side of the guide sleeve is limited and fixed by a cover plate, and the output end of the electronic control system passes through the cover plate, the guide sleeve and the shock-absorbing upper cover in sequence.

[0013] In one or more embodiments of the present invention, sealing gaskets are respectively provided on the upper and lower sides of the guide sleeve.

[0014] In one or more embodiments of the present invention, the shock-absorbing outer shell is sleeved on the outer side of the shock-absorbing inner shell, and a plurality of rectangular grooves are formed on the inner wall of the shock-absorbing outer shell, and buffer pads are arranged in the rectangular grooves.

[0015] In one or more embodiments of the present invention, the electronic control system includes a drive motor fixed in a seat frame, a screw rod is fixed to the output end of the drive motor, the spring sleeve is screwed onto the screw rod, and the lower end of the screw rod extends to the upper end of the shock-absorbing lower cover; the electronic control system also includes a DC converter, a motor control ECU and a switch knob, and the drive motor is electrically connected to the DC converter, the motor control ECU and the switch knob through a wiring harness assembly.

[0016] In one or more embodiments of the present invention, the seat upper assembly is composed of a headrest, a backrest, an armrest and a seat cushion.

[0017] Beneficial effects of the present invention:

[0018] The electric adjustment seat with a single spring vibration reduction structure proposed in the present invention is different from the complex vibration reduction mechanism of traditional commercial vehicle seats. The structure of the seat is simple and reliable. The seat is cast with lightweight alloy to reduce the weight of the seat. The overall sealing and dustproof performance is good, the space occupied is small, and it is easy to control by electric control. The invention uses a single high-performance spring to replace the airbag vibration reduction mechanism to realize the seat vibration reduction function. At the same time, the electric motor accurately controls the seat height to meet the different height requirements of commercial vehicle seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention in another state;

[0021] Figure 3 It is a schematic diagram of the structure of the seat frame and the shock-absorbing shell;

[0022] Figure 4 It is an exploded schematic diagram of the shock absorbing mechanism;

[0023] Figure 5 It is a structural diagram of the electronic control system;

[0024] Figure 6 It is a cross-sectional view of the shock absorbing mechanism and the electronic control system;

[0025] Figure 7 It is a structural schematic diagram of the upper seat assembly;

[0026] Figure 8 yes Figure 4 A in the enlarged view;

[0027] Fig. 9 yes Figure 4 The enlarged view of point B in the figure;

[0028] Fig.10 yes Figure 4 The enlarged view of point C in the figure;

[0029] Fig.11 It is a structural schematic diagram of the prior art. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0031] like Figures 1 to 10 As shown, an electrically adjustable seat with a single spring shock-absorbing structure includes a seat upper assembly 1, wherein the seat upper assembly 1 is fixed on a seat frame 2, a shock-absorbing shell 3 is fixed to the lower side of the seat frame 2, a shock-absorbing mechanism 4 is arranged inside the shock-absorbing shell 3, and the shock-absorbing shell 3 can move along the outer wall direction of the shock-absorbing mechanism 4, an electric control system 5 for driving the shock-absorbing mechanism 3 is arranged inside the seat frame 2 and the shock-absorbing shell 3, and the shock-absorbing mechanism 4 is fixed on the base 5; when the electric control system 5 drives the shock-absorbing mechanism 4 to work, the shock-absorbing shell 3, the upper assembly 1 and the seat frame 2 will move downward.

[0032] In this embodiment, the seat frame 2 is made of a light alloy casting, the top support arm is a box structure, the seat belt retractor or other extended functional components can be assembled inside, and the bottom of the seat frame 2 is welded to the shock-absorbing shell 3. The theoretical height adjustment stroke of the seat is ≥200mm, realizing electric control of the seat.

[0033] In one or more embodiments of the present invention, the shock absorbing mechanism 4 includes a shock absorbing inner shell 41, a shock absorbing lower cover 42 is fixed to the lower side of the shock absorbing inner shell 41, the shock absorbing lower cover 42 is fixed to the middle of the base 5, a shock absorbing upper cover 43 is fixed to the upper side of the shock absorbing inner shell 41, a shock absorbing spring 44 is arranged between the shock absorbing lower cover 42 and the shock absorbing upper cover 43, a spring sleeve 45 is arranged at the upper end of the shock absorbing spring 44, the output end of the electric control system 5 passes through the shock absorbing upper cover 43 and is screwed to the spring sleeve 45, and the electric control system 5 is used to drive the spring sleeve 45 to move up and down.

[0034] In this embodiment, the shock absorbing spring 44 is a key component of shock absorption, and absorbs vibration through its elastic deformation. A spring sleeve 45 is provided at the upper end of the shock absorbing spring 44, and the output end of the electric control system 5 passes through the shock absorbing upper cover 43 and is screwed to the spring sleeve 45. The electric control system 5 is used to drive the spring sleeve 45 to move up and down, thereby changing the compression state of the shock absorbing spring 44 to achieve different degrees of shock absorption effect.

[0035] In one or more embodiments of the present invention, the edges of the shock-absorbing lower cover 42 and the shock-absorbing upper cover 43 both have a limiting edge 421, and the upper and lower ends of the shock-absorbing inner shell 41 are respectively engaged with the inner side of the limiting edge 421; a spring groove is provided on the inner side of the upper section of the shock-absorbing lower cover 42, and the shock-absorbing spring 44 is placed in the spring groove.

[0036] In this embodiment, the position of the shock-absorbing inner shell 41 in the vertical direction can be ensured to be stable through this engaging and limiting structure, and it can be prevented from shifting during vibration. A spring groove is provided on the inner side of the upper section of the shock-absorbing lower cover 42, and the shock-absorbing spring 44 is placed in the spring groove. The design of the spring groove can keep the shock-absorbing spring 44 in the correct position during operation, thereby improving the stability of shock absorption.

[0037] In one or more embodiments of the present invention, the inner wall of the shock-absorbing inner shell 41 has a plurality of vertical ribs 411 , and the outer sides of the shock-absorbing lower cover 42 and the shock-absorbing upper cover 43 are provided with a plurality of slots 431 , and the slots 431 are adapted to the vertical ribs 411 .

[0038] In this embodiment, by setting the card slot 431 and the vertical rib 411, the connection stability between the various components of the shock absorbing mechanism is enhanced, so that the shock absorbing inner shell 41, the shock absorbing lower cover 42 and the shock absorbing upper cover 43 can work together during the working process to improve the shock absorbing effect.

[0039] In one or more embodiments of the present invention, a limiting groove 451 is vertically disposed on the outer edge of the spring sleeve 45 , and the limiting groove 451 is matched with one of the vertical ribs 411 .

[0040] In this embodiment, by matching the limiting groove 451 with one of the vertical ribs 411 , the stability of the spring sleeve 45 during the up and down movement can be ensured, and the rotation or displacement can be prevented, thereby ensuring the accuracy of shock absorption.

[0041] In one or more embodiments of the present invention, a sleeve retainer 6 is embedded in the middle of the upper side of the shock-absorbing upper cover 43, a guide sleeve 7 is rotatably arranged in the sleeve retainer 6, and the upper side of the guide sleeve 7 is limited and fixed by a cover plate 8, and the output end of the electronic control system 5 passes through the cover plate 8, the guide sleeve 7 and the shock-absorbing upper cover 43 in sequence.

[0042] In this embodiment, the design of the guide sleeve 7 can provide a stable guiding effect for the output end of the electronic control system 5, ensuring that it can accurately move up and down when driving the spring sleeve 45.

[0043] In one or more embodiments of the present invention, sealing gaskets 10 are respectively provided on the upper and lower sides of the guide sleeve 7 .

[0044] In this embodiment, the sealing gasket 10 is provided to prevent dust and other impurities from entering, thereby ensuring the normal operation of the guide sleeve 7.

[0045] In one or more embodiments of the present invention, the shock absorbing outer shell 3 is sleeved on the outer side of the shock absorbing inner shell 41 , and a plurality of rectangular grooves are formed on the inner wall of the shock absorbing outer shell 3 , and buffer pads 9 are arranged in the rectangular grooves.

[0046] In this embodiment, the buffer pad 9 is provided to avoid direct contact between the shock absorbing outer shell 3 and the shock absorbing inner shell 41 , thereby reducing the movement friction resistance of the shock absorbing mechanism 4 .

[0047] In one or more embodiments of the present invention, the electronic control system 5 includes a drive motor 51 fixed in the seat frame 2, a screw rod 52 is fixed to the output end of the drive motor 51, the spring sleeve 45 is screwed onto the screw rod 52, and the lower side end of the screw rod 52 extends to the upper side end of the shock-absorbing lower cover 42; the electronic control system 5 also includes a DC converter 53, a motor control ECU54 and a switch knob 55, and the drive motor 51 is electrically connected to the DC converter 53, the motor control ECU54 and the switch knob 55 through a wiring harness assembly.

[0048] In this embodiment, the screw rod 52 is driven to rotate by the driving motor 51, so that the spring sleeve 45 moves up and down. The user can control the operation of the driving motor 51 through the motor control ECU and the DC converter 53 by operating the switch knob 55 to adjust the shock absorption degree of the seat. The driving motor 51 drives its own screw rod 52 to rotate, and the DC converter 53 converts the input power of the vehicle body into the 24V DC required by the driving motor 51. The ECU is responsible for monitoring and adjusting the motor power output and energy management, and can realize the forward and reverse rotation of the driving motor 51 through the operation direction of the switch knob 55, thereby achieving the purpose of adjusting the shock absorption height. The screw rod of the driving motor 51 is meshed with the threaded surface of the spring sleeve 45, and is converted into a mechanical transmission of the up and down linear motion of the seat through the spiral transmission, thereby achieving the purpose of adjusting the height of the seat; when the height of the seat is lower, the more the overlapping part of its shock absorption outer shell 3 and the shock absorption inner shell 41 is.

[0049] In one or more embodiments of the present invention, the seat upper assembly 1 is composed of a headrest 11 , a backrest 12 , an armrest 13 and a seat cushion 14 .

[0050] In this embodiment, these components together provide users with a comfortable riding experience. The headrest 11 can support the user's head and reduce neck fatigue; the backrest 12 is designed according to ergonomics to provide good support for the back; the armrest 13 is convenient for users to place their arms; and the seat cushion 14 provides comfortable sitting support. The seat upper assembly 1 is made of engineering plastic lined with high-elastic sponge and covered with wear-resistant fabric on the outside, which not only ensures the strength of the seat but also improves the comfort of the seat. The seat upper assembly 1 mainly connects the overall plastic back panel part to the seat frame 2 through screws.

[0051] Working principle of the present invention:

[0052] During actual use, the user can operate the switch knob 55 according to his own needs; when the user turns the switch knob 55, the signal is transmitted to the motor control ECU 54 through the wiring harness assembly, and the motor control ECU 54 controls the DC converter 53 to power the drive motor 51 according to the received signal; the drive motor 51 starts to run, driving the screw rod 52 to rotate, and since the spring sleeve 45 is screwed onto the screw rod 52, the spring sleeve 45 will move up and down along its axial direction under the rotation of the screw rod 52; the up and down movement of the spring sleeve 45 will change the shock absorption The compression degree of the spring 44. When vibration occurs during the driving of the vehicle, the shock-absorbing spring 44 absorbs and buffers the vibration according to its current compression state. At the same time, the shock-absorbing outer shell 3 moves relative to the shock-absorbing inner shell 41 during the vibration, and the buffer pad 9 in the rectangular groove plays a buffering role. During the whole process, the extended functional components such as the seat belt retractor in the box structure support arm at the top of the seat frame 2 work normally to provide safety protection for the user, while the headrest 11, backrest 12, armrest 13 and seat cushion 14 of the upper seat assembly 1 provide the user with a comfortable riding experience.

[0053] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

Claims

1. An electrically adjustable seat with a single spring damping structure, characterized in that: include: A seat upper assembly (1), wherein the seat upper assembly (1) is fixed on a seat frame (2), a shock absorbing shell (3) is fixed on the lower side of the seat frame (2), a shock absorbing mechanism (4) is arranged inside the shock absorbing shell (3), and the shock absorbing shell (3) can move along the outer wall direction of the shock absorbing mechanism (4), an electric control system (5) for driving the shock absorbing mechanism (3) is arranged inside the seat frame (2) and the shock absorbing shell (3), and the shock absorbing mechanism (4) is fixed on a base (5); when the electric control system (5) drives the shock absorbing mechanism (4) to work, the shock absorbing shell (3), the upper assembly (1) and the seat frame (2) will move downward.

2. The electrically adjustable seat with a single spring damping structure according to claim 1, characterized in that: The shock absorbing mechanism (4) comprises a shock absorbing inner shell (41), a shock absorbing lower cover (42) is fixed to the lower side of the shock absorbing inner shell (41), the shock absorbing lower cover (42) is fixed to the middle of the base (5), a shock absorbing upper cover (43) is fixed to the upper side of the shock absorbing inner shell (41), a shock absorbing spring (44) is arranged between the shock absorbing lower cover (42) and the shock absorbing upper cover (43), a spring shaft sleeve (45) is arranged at the upper end of the shock absorbing spring (44), an output end of the electric control system (5) passes through the shock absorbing upper cover (43) and is screwed to the spring shaft sleeve (45), and the electric control system (5) is used to drive the spring shaft sleeve (45) to move up and down.

3. The electrically adjustable seat with a single spring damping structure according to claim 2, characterized in that: The edges of the shock-absorbing lower cover (42) and the shock-absorbing upper cover (43) are both provided with limiting edges (421), and the upper and lower ends of the shock-absorbing inner shell (41) are respectively engaged with the inner sides of the limiting edges (421); a spring groove is provided on the inner side of the upper section of the shock-absorbing lower cover (42), and the shock-absorbing spring (44) is placed in the spring groove.

4. The electrically adjustable seat with a single spring damping structure according to claim 2, characterized in that: The inner wall of the shock-absorbing inner shell (41) has a plurality of vertical ribs (411) arranged vertically, and the outer sides of the shock-absorbing lower cover (42) and the shock-absorbing upper cover (43) are provided with a plurality of slots (431), and the slots (431) are adapted to the vertical ribs (411).

5. The electrically adjustable seat with a single spring damping structure according to claim 4, characterized in that: A limiting groove (451) is vertically arranged on the outer edge of the spring sleeve (45), and the limiting groove (451) is matched with one of the vertical ribs (411).

6. The electrically adjustable seat with a single spring damping structure according to claim 2, characterized in that: A shaft sleeve retainer (6) is embedded and installed in the middle of the upper side of the shock-absorbing upper cover (43), a guide shaft sleeve (7) is rotatably arranged in the shaft sleeve retainer (6), the upper side of the guide shaft sleeve (7) is limited and fixed by a cover plate (8), and the output end of the electric control system (5) passes through the cover plate (8), the guide shaft sleeve (7) and the shock-absorbing upper cover (43) in sequence.

7. The electrically adjustable seat with a single spring damping structure according to claim 6, characterized in that: Sealing gaskets (10) are respectively provided on the upper and lower sides of the guide sleeve (7).

8. The electrically adjustable seat with a single spring damping structure according to claim 2, characterized in that: The shock-absorbing outer shell (3) is sleeved on the outer side of the shock-absorbing inner shell (41); a plurality of rectangular grooves are formed on the inner wall of the shock-absorbing outer shell (3); and buffer pads (9) are arranged in the rectangular grooves.

9. The electrically adjustable seat with a single spring damping structure according to claim 2, characterized in that: The electric control system (5) comprises a drive motor (51) fixed in the seat frame (2); a screw rod (52) is fixed to the output end of the drive motor (51); the spring sleeve (45) is screwed onto the screw rod (52); the lower side end of the screw rod (52) extends to the upper side end of the shock-absorbing lower cover (42); the electric control system (5) also comprises a DC converter (53), a motor control ECU (54) and a switch knob (55); the drive motor (51) is electrically connected to the DC converter (53), the motor control ECU (54) and the switch knob (55) via a wiring harness assembly (56).

10. The electrically adjustable seat with a single spring damping structure according to claim 1, characterized in that: The seat upper assembly (1) is composed of a headrest (11), a backrest (12), an armrest (13) and a seat cushion (14).

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