Drive-by-wire adjusting mechanism of seat chassis and seat

Abstract

The utility model relates to a drive-by-wire adjusting mechanism of a seat chassis, which comprises a chassis, an integrally formed fixed seat fixedly connected to the chassis, a backrest adjusting mechanism rotatably connected to the fixed seat, a lifting adjusting mechanism mounted on the fixed seat, and the right end of the lifting adjusting mechanism connected to the chassis. The left side of the lifting adjusting mechanism is connected with a first pull wire used for adjusting the lifting adjusting mechanism, the backrest adjusting mechanism is connected with a second pull wire used for adjusting the backrest adjusting mechanism, the fixing seat comprises a mounting end and a wire pressing end tightly attached to the left side wall of the chassis, and the first pull wire and the second pull wire both penetrate out of the chassis from the wire pressing end. The wire pressing end is provided with a first arc-shaped channel which presses the first stay wire tightly and allows the first stay wire to penetrate out, the wire pressing end is further provided with a second arc-shaped channel which presses the second stay wire tightly and allows the second stay wire to penetrate out, and an arc-shaped guide face communicated with the second arc-shaped channel is further formed between the mounting end and the wire pressing end. The utility model further relates to a seat comprising the drive-by-wire adjusting mechanism of the seat chassis.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a wire-controlled adjustment mechanism for a seat chassis and a seat. Background Art

[0002] Existing chairs generally have the functions of seat lifting and lowering adjustment and backrest tilt angle adjustment. The common adjustment methods are now divided into two types: knob adjustment and wire control adjustment. Among them, the wire control adjustment method is more popular in the current market.

[0003] For example, the Chinese utility model patent with authorization announcement number CN209932053U discloses a wire-controlled seat chassis. The adjustment method of this structure is that its adjustment wire is directly connected to the backrest and seat adjustment mechanism, and then the other end of the wire passes through the chassis. There is no buffering structure in the middle, and no fixed seat is installed to support the buffering wire. This makes it inconvenient to adjust it into place. Even after it is adjusted into place, because there is no certain support and buffer, when the user applies force on the chair, it is easy to receive the force applied by the user and automatically rebound, resulting in failure to adjust the corresponding backrest angle and seat height. There are certain safety risks and inconvenience in use.

[0004] Another example is the Chinese invention patent with authorization announcement number CN107080379B, which also has the same problem.

[0005] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Utility Model Content

[0006] The utility model overcomes the shortcomings of the above-mentioned technology and provides a wire-controlled adjustment mechanism for a seat chassis and a seat.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A wire-controlled adjustment mechanism for a seat chassis, comprising a chassis, a fixed seat integrally formed and fixedly connected to the chassis, a backrest adjustment mechanism rotatably connected to the fixed seat, a lifting adjustment mechanism also installed on the fixed seat, the right end of the lifting adjustment mechanism being connected to the chassis, a first wire rope for adjusting the lifting adjustment mechanism connected to the left side of the lifting adjustment mechanism, a second wire rope for adjusting the backrest adjustment mechanism connected to the backrest adjustment mechanism, the fixed seat including an installation end and a wire pressing end closely attached to the left side wall of the chassis, both the first wire rope and the second wire rope passing through the chassis from the wire pressing end, the wire pressing end being provided with a first arc-shaped channel for pressing and allowing the first wire rope to pass through, the wire pressing end being further provided with a second arc-shaped channel for pressing and allowing the second wire rope to pass through, an arc-shaped guiding surface communicating with the second arc-shaped channel being formed between the installation end and the wire pressing end, both the first wire rope and the second wire rope including a metal wire and a sleeve sleeved outside the metal wire, and the sleeve portions of both the first wire rope and the second wire rope being arranged outside the chassis.

[0009] Further, the lifting adjustment mechanism includes an adjustment rod hinged to the fixed seat at one end, the other end of the adjustment rod being connected to the first wire rope and being able to rotate relative to the fixed seat when pulled by the first wire rope, and a torsion spring being arranged at the hinged part of the adjustment rod and the fixed seat.

[0010] Further, a concave installation groove is formed on the installation end, the backrest adjustment mechanism includes a first spring installed on the left side of the installation groove, a connecting member connected to the right side of the first spring, a movable shaft connected to the right side of the connecting member, and a second spring sleeved on the movable shaft, the chassis including a fixed chassis and a backrest chassis hinged to the fixed chassis, at least two adjustment holes being provided on the backrest chassis, the right end of the movable shaft passing through the right side wall of the chassis and being placed in one of the adjustment holes, one end of the second wire rope being connected to the connecting member; by pulling the second wire rope, the connecting member can be driven to act, so as to cooperate with the first spring and the second spring to make the movable shaft pass through / extend into the corresponding adjustment hole.

[0011] Further, the first spring and the connecting member are installed in the installation groove, the installation end includes buckles located on both sides of the installation groove, and a pressing cover is clamped on the buckles to press the first spring and the connecting member in the installation groove.

[0012] Further, the metal wire of the first wire rope is closely attached to the wall surface of the first arc-shaped channel until it passes through the chassis, and the metal wire of the second wire rope is closely attached to the wall surfaces of the second arc-shaped channel and the arc-shaped guiding surface until it passes through the chassis.

[0013] Further, a through hole is formed in the left side of the chassis. A guiding and fixing member is tightly installed in the through hole. Threading holes are formed in the guiding and fixing member for the metal wires corresponding to the first wire rope and the second wire rope to pass through respectively. The guiding and fixing member includes two conduits respectively communicating with the threading holes. The conduits penetrate out of the chassis. The sleeves of the first wire rope and the second wire rope are respectively placed in the conduits.

[0014] Further, a plurality of first screw holes are formed in the fixing seat. A plurality of second screw holes are provided on the chassis. Screws are installed in the first screw holes and threadedly connected to the second screw holes after passing through the first screw holes.

[0015] Further, the fixing seat is made of POM material.

[0016] A seat includes a wire control adjustment mechanism of the seat chassis according to any one of the claims.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In this case, by providing a fixing seat formed by integral molding, the installation processes of the lifting adjustment mechanism and the backrest adjustment mechanism with the first wire rope and the second wire rope are simplified, and the internal structure of the chassis is optimized. There are no splicing gaps in the fixing seat formed by integral molding. Therefore, the overall structure is more solid, can bear greater loads, reduces the risk of wear and loosening at the connection parts, and is beneficial to the stability of the first wire rope and the second wire rope when adjusting the lifting adjustment mechanism and the backrest adjustment mechanism. Through the setting of the first arc-shaped channel at the wire pressing end of the fixing seat, the running direction of the first wire rope can be better guided. At the same time, the first arc-shaped channel can effectively play a buffering role when the first wire rope pulls and adjusts the lifting adjustment mechanism, facilitating the user to adjust, ensuring more accurate adjustment, effectively guaranteeing the stability after adjustment, and not being easily loosened. The setting of the second arc-shaped channel and the arc-shaped guiding surface can better guide the running direction of the second wire rope. The cooperation of the two can effectively play a buffering role when the second wire rope pulls and adjusts the backrest adjustment mechanism, facilitating the user to adjust, ensuring more accurate adjustment, effectively guaranteeing the stability after adjustment, and not being easily loosened. Through the setting of the wire pressing end, in cooperation with the above-mentioned first arc-shaped channel, second arc-shaped channel and arc-shaped guiding surface, the first wire rope and the second wire rope are jointly supported, fixed, guided and buffered, further pressing the first wire rope and the second wire rope, ensuring the stability and fastness of the first wire rope and the second wire rope during the adjustment process or after adjustment, and not being easily loosened. The integrally designed fixing seat and wire pressing end provide better support, making the adjusted state more stable. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the wire control adjustment mechanism of the seat chassis in this case.

[0020] Figure 2 is Figure 1 The structural schematic diagram of the hidden chassis.

[0021] Figure 3 One of the structural schematic diagrams of the fixed seat in this case.

[0022] Figure 4 Another structural schematic diagram of the fixed seat in this case.

[0023] Figure 5 The structural schematic diagram of the chassis in this case.

[0024] Figure 6 The structural schematic diagram of the guiding and fixing part in this case. Detailed implementation manners

[0025] The features of the present utility model and other related features are further described in detail through the following embodiments for the understanding of those skilled in the same industry:

[0026] Such as Figures 1 to 6As shown in the figure, this case provides a wire-controlled adjustment mechanism for a seat chassis, including a chassis 100. Further, a fixed seat 1 integrally formed is fixedly connected to the chassis 100. By integrally forming the fixed seat 1, it is convenient for one-time stamping and mass production, effectively saving production costs. Further, a backrest adjustment mechanism is rotatably connected to the fixed seat 1. Further, a lifting adjustment mechanism is also installed on the fixed seat 1. Further, the right end of the lifting adjustment mechanism is connected to the chassis 100. Further, a first wire 2 for adjusting the lifting adjustment mechanism is connected to the left side of the lifting adjustment mechanism. Further, a second wire 3 for adjusting the backrest adjustment mechanism is connected to the backrest adjustment mechanism. The fixed seat 1 not only provides an installation space for the backrest adjustment mechanism and the lifting adjustment mechanism, but also serves as a fixing and guiding device for the first wire 2 and the second wire 3. This structure has few components, is simple in structure, and is convenient for installation. Further, the fixed seat 1 includes an installation end 11 and a wire-pressing end 12 closely attached to the left side wall of the chassis 100. The wire-pressing end 12 is closely attached to the left side wall of the chassis 100, used for fixing and guiding the first wire 2 and the second wire 3, guiding the first wire 2 and the second wire 3 to pass out of the chassis 100. At the same time, it can effectively press the first wire 2 and the second wire 3, making their movement more stable and smooth. Further, both the first wire 2 and the second wire 3 pass out of the chassis 100 from the wire-pressing end 12. Further, a first arc-shaped channel 121 for pressing and allowing the first wire 2 to pass through is formed on the wire-pressing end 12. The design of the first arc-shaped channel 121 reduces the contact area between the first wire 2 and the fixed seat 1, thereby reducing the friction force and prolonging the service life of the wire. The arc shape of the first arc-shaped channel 121 can effectively fix the wire, prevent it from loosening during the adjustment process, and thus improve the stability of the seat adjustment. The arc-shaped surface reduces the wear of the wire, making the pulling of the first wire 2 more stable and smooth. Further, a second arc-shaped channel 122 for pressing and allowing the second wire 3 to pass through is also formed on the wire-pressing end 12. Further, an arc-shaped guiding surface 123 communicating with the second arc-shaped channel 122 is formed between the installation end 11 and the wire-pressing end 12. The function and effect of the second arc-shaped channel 122 are similar to those of the first arc-shaped channel. The design of the arc-shaped guiding surface 123 enables the second wire 3 to be smoothly guided before entering the second arc-shaped channel 122, reducing the resistance of the wire during turning. Through the cooperation of the second arc-shaped channel 122 and the arc-shaped guiding surface 123, the second wire 3 is more stable and smooth when being pulled, convenient for adjustment and having good stability after adjustment. Further, both the first wire 2 and the second wire 3 include a metal wire and a sleeve sleeved outside the metal wire, and further, the sleeve parts of the first wire 2 and the second wire 3 are both arranged outside the chassis 100. The structures of the first wire 2 and the second wire 3 adopt the conventional design in the field and will not be elaborated here.It should be noted that in this case, the sleeve parts of the first pulling wire 2 and the second pulling wire 3 are both arranged outside the chassis 100. That is to say, the parts of the first pulling wire 2 and the second pulling wire 3 located inside the chassis 100 are both metal wires. Through the direct cooperation of the metal wires with the fixing seat 1, it is more convenient for users to install and the adjustment is more stable. Because in the prior art, the metal wire and the sleeve are bent together inside the chassis. When adjusting, the metal wire inside will become shorter. In the long run, it is easy to cause unstable adjustment, or damage and failure, resulting in the situation of unable to adjust or inconvenient adjustment.

[0027] As Figure 1 , Figure 4 shown, further, the lifting adjustment mechanism includes an adjustment rod 4 hinged to the fixing seat 1 at one end. Further, the other end of the adjustment rod 4 is connected to the first pulling wire 2 and can be pulled by the first pulling wire 2 to rotate relative to the fixing seat 1. Further, a torsion spring 5 is provided at the hinged part of the adjustment rod 4 and the fixing seat 1. The user can pull the first pulling wire 2 to drive the adjustment rod 4 to rotate relative to the fixing seat 1, so as to realize the lifting adjustment. When the adjustment rod 4 is not affected by external forces, the torsion spring 5 can provide a pre-tightening force to keep the adjustment rod 4 in a predetermined position. The torsion spring 5 ensures the position fixation of the lifting adjustment mechanism after the adjustment is completed, and avoids accidental adjustment caused by external forces.

[0028] As Figures 1 - 5 shown, further, a concave installation groove 111 is formed on the installation end 11. Further, the backrest adjustment mechanism includes a first spring 6 installed on the left side of the installation groove 111, a connecting piece 7 connected to the right side of the first spring 6, a movable shaft 8 connected to the right side of the connecting piece, and a second spring 9 sleeved on the movable shaft 8. Further, the chassis 100 includes a fixed chassis 101 and a backrest chassis 102 hinged to the fixed chassis 101. Further, at least two adjustment holes 1021 are provided on the backrest chassis 102, and each adjustment hole 1021 corresponds to a different backrest inclination angle. Specifically, when implemented, the user can set three or four or more adjustment holes 1021 according to requirements to achieve multi-gear adjustment and meet the needs of different customers. Further, the right end of the movable shaft 8 passes through the right side wall of the chassis 100 and is placed in one of the adjustment holes 1021. Further, one end of the second pulling wire 3 is connected to the connecting piece 7; by pulling the second pulling wire 3, the connecting piece 7 can be driven to act, so as to cooperate with the first spring 6 and the second spring 9 to make the movable shaft 8 pass through / extend into the corresponding adjustment hole 1021, so as to realize the adjustment of the backrest adjustment mechanism.

[0029] Continue as Figures 1 - 5As shown, further, the first spring 6 and the connecting member 7 are installed in the installation groove 111. Further, the installation end 11 includes buckles 112 located on both sides of the installation groove 111. Further, a gland 10 is clamped on the buckles 112 to press the first spring 6 and the connecting member 7 tightly in the installation groove 111. Through the clamping connection between the buckles 112 and the gland 10, the first spring 6 and the connecting member 7 are tightly arranged in the installation groove 111, preventing the two from shifting or loosening when pulling the second wire 3 for adjustment, ensuring the stability of the adjustment. This clamping structure is convenient for disassembly and assembly.

[0030] Further, continue as Figures 1 - 5 As shown, further, the metal wire of the first wire 2 closely adheres to the wall surface of the first arc-shaped channel 121 until it passes through the chassis 100. Further, the metal wire of the second wire 3 closely adheres to the wall surfaces of the second arc-shaped channel 122 and the arc-shaped guiding surface 123 until it passes through the chassis 100. The close adhesion of the metal wire of the second wire 3 to the second arc-shaped channel 122 and the arc-shaped guiding surface 123 makes the contact of the second wire 3 with the fixed seat 1 more sufficient when pulling, the pulling is more stable, the pulling stroke is shorter, and it is more convenient to adjust, effectively improving the stability of the adjustment. The function and effect of the metal wire of the first wire 2 closely adhering to the wall surface of the first arc-shaped channel 121 are the same as those of the second wire 3.

[0031] As Figure 1 、 Figure 4 、 Figure 6 As shown, further, a through hole 103 is opened on the left side of the chassis 100. Further, a guiding and fixing member 200 is tightly installed in the through hole 103. Further, threading holes 201 for the metal wires of the first wire 2 and the second wire 3 to pass through respectively are opened on the guiding and fixing member 200. The threading holes 201 ensure that the metal wires of the first wire 2 and the second wire 3 can smoothly pass through the guiding and fixing member 200 and pass through the chassis 100, playing a role of limiting and guiding for the metal wires of the first wire 2 and the second wire 3, and improving the smoothness of the first wire 2 and the second wire 3 when being pulled. Further, the guiding and fixing member 200 includes two conduits 202 respectively communicating with the threading holes 201. Further, the conduits 202 pass out of the chassis 100, and the sleeves of the first wire 2 and the second wire 3 are respectively placed in the conduits 202.

[0032] As Figures 1 - 5 As shown, further, a number of first screw holes 13 are opened on the fixed seat 1. Further, a number of second screw holes 104 are provided on the chassis 100. Further, screws 300 passing through the first screw holes 13 and threadedly connected to the second screw holes 104 are installed in the first screw holes 13. The fixed seat 1 is fixedly connected to the chassis 100 by means of threaded connection. The threaded connection method makes the installation process simpler and faster, reduces the installation time and difficulty, and is convenient for disassembly and assembly at the same time.

[0033] Preferably, further, the fixed seat 1 is made of POM material, which has excellent mechanical properties, such as wear resistance, heat resistance, self-lubrication, etc., and is beneficial to ensuring the stability of the wire control adjustment mechanism of the seat chassis in this case.

[0034] This case also provides a seat, including the wire control adjustment mechanism of the seat chassis described in this case.

[0035] As described above, what this case protects is a wire control adjustment mechanism of a seat chassis and a seat. All technical solutions identical or similar to this case should be regarded as falling within the protection scope of this case.

Claims

1. A wire-controlled adjustment mechanism for a seat chassis, comprising a chassis (100), characterized in that: A fixed seat (1) integrally formed is fixedly connected to the chassis (100). A backrest adjustment mechanism is rotatably connected to the fixed seat (1). A lifting adjustment mechanism is also installed on the fixed seat (1). The right end of the lifting adjustment mechanism is connected to the chassis (100). A first cable (2) for adjusting the lifting adjustment mechanism is connected to the left side of the lifting adjustment mechanism. A second cable (3) for adjusting the backrest adjustment mechanism is connected to the backrest adjustment mechanism. The fixed seat (1) includes a mounting end (11) and a wire-pressing end (12) closely attached to the left side wall of the chassis (100). Both the first cable (2) and the second cable (3) pass through the chassis (100) from the wire-pressing end (12). A first arc-shaped channel (121) for pressing and allowing the first cable (2) to pass through is formed on the wire-pressing end (12). A second arc-shaped channel (122) for pressing and allowing the second cable (3) to pass through is also formed on the wire-pressing end (12). An arc-shaped guiding surface (123) communicating with the second arc-shaped channel (122) is further formed between the mounting end (11) and the wire-pressing end (12). Both the first cable (2) and the second cable (3) include a metal wire and a sleeve sleeved outside the metal wire, and the sleeve parts of the first cable (2) and the second cable (3) are both arranged outside the chassis (100).

2. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: The lifting adjustment mechanism includes an adjustment rod (4) hinged to the fixed seat (1) at one end. The other end of the adjustment rod (4) is connected to the first cable (2) and can be pulled by the first cable (2) to rotate relative to the fixed seat (1). A torsion spring (5) is arranged at the hinged part of the adjustment rod (4) and the fixed seat (1).

3. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: A concave mounting groove (111) is formed on the mounting end (11). The backrest adjustment mechanism includes a first spring (6) installed on the left side of the mounting groove (111), a connecting piece (7) connected to the right side of the first spring (6), a movable shaft (8) connected to the right side of the connecting piece, and a second spring (9) sleeved on the movable shaft (8). The chassis (100) includes a fixed chassis (101) and a backrest chassis (102) hinged to the fixed chassis (101). At least two adjustment holes (1021) are provided on the backrest chassis (102). The right end of the movable shaft (8) passes through the right side wall of the chassis (100) and is placed in one of the adjustment holes (1021). One end of the second cable (3) is connected to the connecting piece (7); by pulling the second cable (3), the connecting piece (7) can be driven to act, so as to cooperate with the first spring (6) and the second spring (9) to make the movable shaft (8) pass through / extend into the corresponding adjustment hole (1021).

4. The wire-controlled adjustment mechanism of a seat chassis according to claim 3, characterized in that: The first spring (6) and the connecting piece (7) are installed in the mounting groove (111). The mounting end (11) includes buckles (112) located on both sides of the mounting groove (111). A pressing cover (10) that presses the first spring (6) and the connecting piece (7) in the mounting groove (111) is clamped on the buckles (112).

5. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: The metal wire of the first pull wire (2) closely adheres to the wall surface of the first arc-shaped channel (121) until it penetrates through the chassis (100), and the metal wire of the second pull wire (3) closely adheres to the wall surfaces of the second arc-shaped channel (122) and the arc-shaped guiding surface (123) until it penetrates through the chassis (100).

6. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: A through hole (103) is formed on the left side of the chassis (100), a guiding and fixing member (200) is tightly installed in the through hole (103), threading holes (201) for the metal wires of the first pull wire (2) and the second pull wire (3) to pass through respectively are formed on the guiding and fixing member (200), the guiding and fixing member (200) includes two conduit pipes (202) respectively communicated with the threading holes (201), the conduit pipes (202) penetrate out of the chassis (100), and the sleeves of the first pull wire (2) and the second pull wire (3) are respectively placed in the conduit pipes (202).

7. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: A plurality of first screw holes (13) are formed on the fixing seat (1), a plurality of second screw holes (104) are provided on the chassis (100), and screws (300) that penetrate out of the first screw holes (13) and are threadedly connected to the second screw holes (104) are installed in the first screw holes (13).

8. The wire-controlled adjustment mechanism of a seat chassis according to claim 1, characterized in that: The fixing seat (1) is made of POM material.

9. A seat, characterized in that: It includes a wire control adjustment mechanism for the seat chassis according to any one of claims 1-8.

Images