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

Abstract

The invention 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 invention further relates to a seat comprising the drive-by-wire adjusting mechanism of the seat chassis.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and in particular to a wire-controlled adjustment structure of 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. Summary of the invention

[0006] The present invention overcomes the deficiencies of the above-mentioned technology and provides a wire-controlled adjustment mechanism for a seat chassis and a seat.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A wire-controlled adjustment mechanism for a seat chassis comprises a chassis, a fixed seat made of an integral molding is fixedly connected to the chassis, a backrest adjustment mechanism is rotatably connected to the fixed seat, a lifting adjustment mechanism is also installed on the fixed seat, the right end of the lifting adjustment mechanism is connected to the chassis, the left side of the lifting adjustment mechanism is connected to a first pull wire for adjusting the lifting adjustment mechanism, and the backrest adjustment mechanism is connected to a second pull wire for adjusting the backrest adjustment mechanism, the fixed seat comprises a mounting end and a wire pressing end close to the left side wall of the chassis, the first pull wire and the second pull wire both pass through the chassis from the wire pressing end, a first arcuate channel for pressing the first pull wire tightly and allowing the first pull wire to pass through is provided on the wire pressing end, a second arcuate channel for pressing the second pull wire tightly and allowing the second pull wire to pass through is also provided on the wire pressing end, an arcuate guide surface connected to the second arcuate channel is also formed between the mounting end and the wire pressing end, the first pull wire and the second pull wire both comprise a metal wire and a sleeve sleeved outside the metal wire, and the sleeve parts of the first pull wire and the second pull wire are both arranged outside the chassis.

[0009] Furthermore, the lifting adjustment mechanism includes an adjustment rod with one end hinged to the fixed seat, the other end of the adjustment rod is connected to the first pull wire and can be rotated relative to the fixed seat after being pulled by the first pull wire, and a torsion spring is provided at the hinged portion of the adjustment rod and the fixed seat.

[0010] Furthermore, a concave mounting groove is provided on the mounting end, and the backrest adjustment mechanism includes a first spring installed on the left side of the mounting groove, a connecting piece connected to the right side of the first spring, a movable shaft connected to the right side of the connecting piece, and a second spring sleeved on the movable shaft. The chassis includes a fixed chassis and a backrest chassis hinged to the fixed chassis, and at least two adjustment holes are provided on the backrest chassis. The right end of the movable shaft passes through the right side wall of the chassis and is placed in one of the adjustment holes, and one end of the second pull wire is connected to the connecting piece; the connecting piece can be driven to move by pulling the second pull wire, thereby cooperating with the first spring and the second spring to make the movable shaft pass through / extend into the corresponding adjustment hole.

[0011] Furthermore, the first spring and the connecting member are installed in the installation slot, and the installation end includes buckles located on both sides of the installation slot, and the buckles are clamped with pressure covers that press the first spring and the connecting member into the installation slot.

[0012] Furthermore, the metal wire of the first pull wire closely adheres to the wall of the first arc-shaped channel until it passes through the chassis, and the metal wire of the second pull wire closely adheres to the wall of the second arc-shaped channel and the arc-shaped guide surface until it passes through the chassis.

[0013] Furthermore, a through hole is provided on the left side of the chassis, a guide fixing piece is clamped and installed in the through hole, the guide fixing piece is provided with threading holes for metal wires corresponding to the first pull wire and the second pull wire to pass through respectively, the guide fixing piece includes two conduits respectively connected to the threading holes, the conduits pass through the outside of the chassis, and the sleeves of the first pull wire and the second pull wire are respectively placed in the conduits.

[0014] Furthermore, the fixing seat is provided with a plurality of first screw holes, the chassis is provided with a plurality of second screw holes, and screws are installed in the first screw holes, passing through the first screw holes and being threadedly connected in the second screw holes.

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

[0016] A seat, comprising a wire-controlled adjustment mechanism for a seat chassis as claimed in any one of claims 1 to 5.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this case, by setting an integrally formed fixing seat, the installation process of the lifting adjustment mechanism, the backrest adjustment mechanism, and the first and second cables are simplified, and the internal structure of the chassis is optimized. The integrally formed fixing seat does not have a splicing gap, so the overall structure is more solid, can withstand a larger load, reduces the risk of wear and loosening of the connection parts, and is conducive to the stability of the first and second cables when adjusting the lifting adjustment mechanism and the backrest adjustment mechanism. The setting of the first arc-shaped channel at the wire pressing end on the fixing seat can better guide the direction of the first cable, and at the same time, the first arc-shaped channel can effectively play a buffering role when the first cable is pulled to adjust the lifting adjustment mechanism, which is convenient for users to adjust, ensures more precise adjustment, and effectively ensures stability after adjustment, and is not easy to loosen. The setting of the second arc-shaped channel and the arc-shaped guide surface can better guide the direction of the second cable, and the cooperation of the two can effectively play a buffering role when the second cable is pulled to adjust the backrest adjustment mechanism, which is convenient for users to adjust, ensures more precise adjustment, and effectively ensures stability after adjustment, and is not easy to loosen. The setting of the wire pressing end, in conjunction with the first arc-shaped channel, the second arc-shaped channel and the arc-shaped guide surface, together play a role of supporting, fixing, guiding and buffering the first and second pull wires, further pressing the first and second pull wires, ensuring the stability and tightness of the first and second pull wires during or after adjustment, and preventing them from loosening. The integrated design of the fixing seat and the wire pressing end provides better support, making the state after adjustment more stable. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of the hidden chassis.

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

[0022] Figure 4 This is the second schematic diagram of the fixed seat structure in this case.

[0023] Figure 5 It is a schematic diagram of the chassis structure of this case.

[0024] Figure 6 It is a structural schematic diagram of the guide fixing part of this case. DETAILED DESCRIPTION

[0025] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0026] like Figures 1 to 6As shown, the present invention provides a wire-controlled adjustment mechanism for a seat chassis, including a chassis 100. Further, a fixed seat 1 made of one piece is fixedly connected to the chassis 100. By forming the fixed seat 1 in one piece, it is convenient to stamp and form once, and mass production is carried out, which effectively saves 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 pull wire 2 for adjusting the lifting adjustment mechanism is connected to the left side of the lifting adjustment mechanism. Further, a second pull wire 3 for adjusting the backrest adjustment mechanism is connected to the backrest adjustment mechanism. The fixed seat 1 not only provides installation space for the backrest adjustment mechanism and the lifting adjustment mechanism, but also serves as a fixing and guiding device for the first pull wire 2 and the second pull wire 3. This structure has few parts, a simple structure, and is easy to install. Further, the fixed seat 1 includes a mounting end 11 and a wire pressing end 12 close to the left side wall of the chassis 100. The wire pressing end 12 is close to the left side wall of the chassis 100, and is used to fix and guide the first pull wire 2 and the second pull wire 3, and guide the first pull wire 2 and the second pull wire 3 to pass out of the chassis 100. At the same time, it can effectively press the first pull wire 2 and the second pull wire 3, so that their movement is more stable and smooth. Furthermore, the first pull wire 2 and the second pull wire 3 both pass through the chassis 100 from the wire pressing end 12. Furthermore, the wire pressing end 12 is provided with a first arc-shaped channel 121 for pressing the first pull wire 2 and allowing the first pull wire 2 to pass through. The design of the first arc-shaped channel 121 reduces the contact area between the first pull wire 2 and the fixed seat 1, thereby reducing friction and extending the service life of the pull wire. The arc shape of the first arc-shaped channel 121 can effectively fix the pull wire and prevent it from loosening during the adjustment process, thereby improving the stability of the seat adjustment. The arc-shaped surface reduces the wear of the pull wire, making the pulling of the first pull wire 2 more stable and smooth. Furthermore, a second arc-shaped channel 122 is provided on the wire pressing end 12 to press the second wire 3 and allow the second wire 3 to pass through. Furthermore, an arc-shaped guide surface 123 connected to the second arc-shaped channel 122 is formed between the mounting 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 guide surface 123 enables the second wire 3 to be smoothly guided before entering the second arc-shaped channel 122, thereby reducing the resistance of the wire when turning. Through the cooperation between the second arc-shaped channel 122 and the arc-shaped guide surface 123, the second wire 3 is more stable and smooth when pulled, and is convenient to adjust and has good stability after adjustment. Furthermore, the first wire 2 and the second wire 3 both 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 can be conventionally designed in the art, and will not be repeated here.It should be noted that in this case, the sleeve parts of the first and second cables 2 and 3 are both arranged outside the chassis 100, that is, the parts of the first and second cables 2 and 3 located inside the chassis 100 are both metal wires, and the direct cooperation between the metal wires and the fixing seat 1 makes it easier for users to install and more stable to adjust. Because the metal wires and the sleeves in the prior art are bent together inside the chassis, the metal wires inside will become shorter during adjustment, which may easily lead to unstable adjustment, or damage and failure in the long run, resulting in the situation that the adjustment cannot be made or is inconvenient.

[0027] like Figure 1 , Figure 4 As shown, further, the lifting and lowering adjustment mechanism includes an adjustment rod 4 hinged to the fixed seat 1 at one end, further, the other end of the adjustment rod 4 is connected to the first pull wire 2 and can be rotated relative to the fixed seat 1 after being pulled by the first pull wire 2, and further, a torsion spring 5 is provided at the hinged portion of the adjustment rod 4 and the fixed seat 1. The user can drive the adjustment rod 4 to rotate relative to the fixed seat 1 by pulling the first pull wire 2, thereby achieving lifting and lowering adjustment. When the adjustment rod 4 is not subjected to external force, 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 that the position of the lifting and lowering adjustment mechanism is fixed after the adjustment is completed, avoiding accidental adjustment caused by external force.

[0028] like Figure 1-Figure 5 As shown, further, a concave mounting groove 111 is provided on the mounting end 11. Further, the backrest adjustment mechanism includes a first spring 6 installed on the left side of the mounting groove 111, a connecting member 7 connected to the right side of the first spring 6, a movable shaft 8 connected to the right side of the connecting member, 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, each adjustment hole 1021 corresponds to a different backrest tilt angle. In specific implementation, the user can set three or four or more adjustment holes 1021 according to needs to achieve multi-gear adjustment to meet different customer needs. 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. Furthermore, one end of the second pull wire 3 is connected to the connecting member 7; the connecting member 7 can be driven to move by pulling the second pull wire 3, thereby cooperating 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, thereby realizing the adjustment of the backrest adjustment mechanism.

[0029] Continue as Figure 1-Figure 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, and further, the buckle 112 is clamped with a gland 10 that presses the first spring 6 and the connecting member 7 in the installation groove 111. Through the clamping of the buckle 112 and the gland 10, the first spring 6 and the connecting member 7 are clamped and arranged in the installation groove 111, preventing the two from being displaced or loosened when the second pull wire 3 is pulled for adjustment, thereby ensuring the stability of the adjustment, and this clamping structure is easy to disassemble and assemble.

[0030] Further, continue as Figure 1-Figure 5 As shown, further, the metal wire of the first pull wire 2 closely fits the wall of the first arc-shaped channel 121 until it passes through the chassis 100, and further, the metal wire of the second pull wire 3 closely fits the wall of the second arc-shaped channel 122 and the arc-shaped guide surface 123 until it passes through the chassis 100. The metal wire of the second pull wire 3 closely fits the second arc-shaped channel 122 and the arc-shaped guide surface 123, so that the second pull wire 3 is in more complete contact with the fixed seat 1 when being pulled, the pulling is more stable, the pulling stroke is shorter, and the adjustment is more convenient, which effectively improves the stability of the adjustment. The role and effect of the metal wire of the first pull wire 2 closely fitting the wall of the first arc-shaped channel 121 are the same as those of the second pull wire 3.

[0031] like Figure 1 , Figure 4 , Figure 6 As shown, further, a through hole 103 is provided on the left side of the chassis 100, further, a guide fixing member 200 is clamped and installed in the through hole 103, and further, a threading hole 201 is provided on the guide fixing member 200 for the metal wires corresponding to the first pull wire 2 and the second pull wire 3 to pass through respectively. The threading hole 201 ensures that the metal wires of the first pull wire 2 and the second pull wire 3 can pass through the guide fixing member 200 smoothly and pass through the chassis 100, and plays a role in limiting and guiding the metal wires of the first pull wire 2 and the second pull wire 3, thereby improving the smoothness of the first pull wire 2 and the second pull wire 3 when being pulled. Further, the guide fixing member 200 includes two conduits 202 respectively connected to the threading hole 201, further, the conduit 202 passes through the outside of the chassis 100, and further, the sleeves of the first pull wire 2 and the second pull wire 3 are respectively placed in the conduit 202.

[0032] like Figure 1-Figure 5 As shown, further, a plurality of first screw holes 13 are provided on the fixing base 1, further, a plurality of second screw holes 104 are provided on the chassis 100, and further, screws 300 passing through the first screw holes 13 and being threadedly connected to the second screw holes 104 are installed in the first screw holes 13. The fixing base 1 is fixedly connected to the chassis 100 by means of threaded connection, and the threaded connection makes the installation process simpler and faster, reduces the installation time and difficulty, and is convenient for disassembly and assembly.

[0033] Preferably, further, the fixing seat 1 is made of POM material, which has excellent mechanical properties, wear resistance, heat resistance, self-lubrication and other characteristics, which is conducive to ensuring the stability of the wire-controlled adjustment mechanism of the seat chassis of this case.

[0034] The present case also provides a seat, including the wire-controlled adjustment mechanism of the seat chassis described in the present case.

[0035] As mentioned above, this case protects a wire-controlled adjustment mechanism for a seat chassis and a seat. All technical solutions that are the same or similar to those in this case should be deemed to fall within the scope of protection of this case.

Claims

1. A wire-controlled adjustment mechanism for a seat chassis, comprising a chassis (100), characterized in that: The chassis (100) is fixedly connected to a fixed seat (1) made of an integral molding, 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), the left side of the lifting adjustment mechanism is connected to a first pull wire (2) for adjusting the lifting adjustment mechanism, and the backrest adjustment mechanism is connected to a second pull wire (3) for adjusting the backrest adjustment mechanism. The fixed seat (1) comprises a mounting end (11) and a wire pressing end (12) close to the left side wall of the chassis (100), and the first pull wire (2) and the second pull wire (3) are both passed through the wire pressing end (12). A chassis (100), wherein the wire pressing end (12) is provided with a first arcuate channel (121) for pressing the first pull wire (2) and allowing the first pull wire (2) to pass through, and the wire pressing end (12) is also provided with a second arcuate channel (122) for pressing the second pull wire (3) and allowing the second pull wire (3) to pass through, and an arcuate guide surface (123) connected to the second arcuate channel (122) is also formed between the mounting end (11) and the wire pressing end (12), and the first pull wire (2) and the second pull wire (3) both include a metal wire and a sleeve sleeved outside the metal wire, and the sleeve portions of the first pull wire (2) and the second pull wire (3) are both arranged outside the chassis (100).

2. A wire-controlled adjustment mechanism for a seat chassis according to claim 1, characterized in that: The lifting and lowering adjustment mechanism comprises an adjustment rod (4) having one end hinged to a fixed seat (1); the other end of the adjustment rod (4) is connected to a first pull wire (2) and can be rotated relative to the fixed seat (1) after being pulled by the first pull wire (2); a torsion spring (5) is provided at the hinged portion of the adjustment rod (4) and the fixed seat (1).

3. The seat chassis wire control adjustment mechanism according to claim 1, characterized in that: The mounting end (11) is provided with a concave mounting groove (111), the backrest adjustment mechanism comprises a first spring (6) mounted on the left side of the mounting groove (111), a connecting member (7) connected to the right side of the first spring (6), a movable shaft (8) connected to the right side of the connecting member, and a second spring (9) sleeved on the movable shaft (8), the chassis (100) comprises a fixed chassis (101) and a backrest chassis (102) hinged to the fixed chassis (101), and the 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 pull wire (3) is connected to the connecting member (7); the connecting member (7) can be driven to move by pulling the second pull wire (3), thereby cooperating 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 seat chassis wire control adjustment mechanism according to claim 3, characterized in that: The first spring (6) and the connecting member (7) are installed in the installation groove (111), and the installation end (11) includes buckles (112) located on both sides of the installation groove (111), and the buckles (112) are clamped with a pressure cover (10) for pressing the first spring (6) and the connecting member (7) into the installation groove (111).

5. The wire-controlled adjustment mechanism for 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 passing through the chassis (100), and the metal wire of the second pull wire (3) closely adheres to the wall surface of the second arc-shaped channel (122) and the arc-shaped guide surface (123) until passing through the chassis (100).

6. The wire-controlled adjustment mechanism for a seat chassis according to claim 1, characterized in that: A through hole (103) is provided on the left side of the chassis (100), and a guide fixing member (200) is clamped and installed in the through hole (103). The guide fixing member (200) is provided with threading holes (201) for metal wires corresponding to the first pull wire (2) and the second pull wire (3) to pass through respectively. The guide fixing member (200) includes two conduits (202) respectively connected to the threading holes (201), and the conduits (202) pass through the outside of the chassis (100), and the sleeves of the first pull wire (2) and the second pull wire (3) are respectively placed in the conduits (202).

7. The seat chassis wire control adjustment mechanism according to claim 1, characterized in that: The fixing seat (1) is provided with a plurality of first screw holes (13), the chassis (100) is provided with a plurality of second screw holes (104), and screws (300) are installed in the first screw holes (13) and pass through the first screw holes (13) and are threadedly connected to the second screw holes (104).

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

9. A seat, characterized in that: A wire-controlled adjustment mechanism for a seat chassis comprising the method described in any one of claims 1 to 8.

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