External drive small table plate folding mechanism based on six-connecting-rod linkage seam filling

Abstract

The invention relates to the technical field of small table plates of folding seats, in particular to an external driving small table plate folding mechanism based on six-connecting-rod linkage seam filling, which comprises a mounting seat, a motor is arranged at the top of the mounting seat, driving shafts are respectively arranged at two ends of the motor, and first shaft heads are respectively arranged on two sides of the bottom of the mounting seat; second shaft heads are arranged at the bottoms of the two sides of the table plate framework respectively, hinge shafts are arranged in the middles of the table plate framework respectively, and small swing arms are hinged to the tops of the table plate framework respectively; the top end of the L connecting rod is vertically connected with the driving shaft, and the other end is matched with the hinge shaft through a shaft hole; two ends of the S connecting rod are respectively matched with the first shaft head and the second shaft head through shaft holes, and the S connecting rod is shorter than the L connecting rod; one end of the seam filling connecting rod is hinged and matched with the free end of the small swing arm, and the other end is hinged with the middle part of the L connecting rod close to the hinged shaft area. In the unfolding process of the table board framework, the storage grooves of the connecting rod mechanisms are filled and leveled up through the seam filling connecting rods, and the integrity of the small table board is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of folding seat tables, and particularly to an externally-driven folding mechanism for a table of a folding seat based on six-link linkage for seam filling. Background Art

[0002] As an auxiliary component for office work, entertainment or dining, the car seat table has a wide range of application requirements in business vehicles, family MPVs and long-distance travel scenarios. At present, the table with a four-link folding mechanism is widely used in the opening and closing design of seat tables due to its advantages such as stable structure and convenient operation. However, during the folding process of the traditional four-link mechanism, due to the requirements for the movement space of the link flipping motion, gaps need to be reserved on the table panel. These gaps not only affect the appearance, but may also pinch the user's fingers or accumulate dust and debris, reducing the safety and durability of the product. Summary of the Invention

[0003] The present invention provides an externally-driven folding mechanism for a table of a folding seat based on six-link linkage for seam filling. Based on the coordinated movement of multiple links, the stable unfolding and folding of the table frame are realized by driving with a motor. At the same time, the receiving groove of the movement mechanism is filled by a seam-filling link to improve the integrity of the small table.

[0004] To achieve the above object, the present invention provides the following technical solution: An externally-driven folding mechanism for a table of a folding seat based on six-link linkage for seam filling, which includes: a mounting seat, the mounting seat is fixedly connected to the back of the seat through a positioning pin and a mounting hole, and a motor is horizontally provided at the top of the mounting seat, driving shafts penetrating through the mounting seat are respectively provided at both ends of the motor, and first shaft heads are respectively provided at both sides of the bottom of the mounting seat; a table frame, the table frame is arranged on the side of the mounting seat away from the seat, and second shaft heads are respectively provided at the bottoms of both sides of the table frame, hinge shafts are respectively provided in the middle, and small swing arms are respectively hinged at the tops; an L-link, the top end of the L-link is vertically connected to the driving shaft, and the other end is matched with the hinge shaft through a shaft hole; an S-link, both ends of the S-link are respectively matched with the first shaft head and the second shaft head through shaft holes, and the length of the S-link is less than the length of the L-link; a seam-filling link, one end of the seam-filling link is hinged and matched with the free end of the small swing arm, and the other end is hinged to the area near the hinge shaft in the middle of the L-link.

[0005] Preferably, the thicknesses of the seam-filling link, the L-link and the S-link are equal and flush; a rear extension head is provided at the end of the seam-filling link away from the small swing arm, and an avoidance groove is provided on the side of the L-link away from the mounting seat corresponding to the rear extension head.

[0006] Preferably, a front extension head is provided at the end of the seam-filling link away from the L-link, and the small swing arm is located on the side of the seam-filling link.

[0007] Preferably, a torsion spring is provided between the L-link and the mounting seat.

[0008] Preferably, the tops of the L-link and the seam-filling link are flush in the unfolded state.

[0009] The beneficial effects of the present invention are as follows: the table frame is used to install the table top and outer bottom shell of the small table, and the L connecting rod, S connecting rod and seam-filling connecting rod on both sides of the table frame together constitute a six-link mechanism, wherein the table top part of the small table is provided with slots corresponding to the movement areas of the L connecting rod and the seam-filling connecting rod, so as to meet the flipping movement of the small table, and the L connecting rod drives the six-link mechanism to work under the drive of the motor to achieve the stable unfolding and folding of the small table, and the seam-filling connecting rod is used to eliminate the gap on the table top, so that the L connecting rod, the seam-filling connecting rod and the table top form an integral plane structure to meet the flat use requirements of the small table. During the flipping movement of the table frame, the motor drives the L connecting rod to rotate through the driving shafts at both ends, and transmits power to the entire six-link system as an active part. The rotation of the L connecting rod drives the table frame to unfold or fold through the hinge shaft, and drives the seam-filling connecting rod to move at the same time. The L connecting rod and the S connecting rod constitute the main support frame, the L connecting rod provides the unfolding force, and the S connecting rod limits the movement trajectory to ensure the stable opening and closing of the table frame. When the table frame is unfolded, the seam-filling link is driven by the L-link to push upward to fill the gap caused by the flipping movement in the traditional four-link; when folded, it shrinks synchronously to avoid interference. In addition, in the unfolded state, the seam-filling link is flush with the top of the L-link, forming a continuous closed surface, eliminating the slot required for the flipping of the link in the traditional design. The precise control of the motor further ensures that the links are always closely matched during the movement. The seam-filling link further optimizes the seam-filling effect of the seam-filling link and the L-link through the cooperation of the rear extension head and the avoidance groove, reducing the size of the gap on the small table top. The side-mounted small swing arm is easy to hide outside the slot on the table top to avoid interference with the movement of the seam-filling link. The torsion spring applies return support to the L-link, thereby eliminating the mineral volume generated by the six-link mechanism after storage and effectively suppressing the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the front side of the overall structure of the present invention in the storage state;

[0012] Figure 2 It is a side rear schematic diagram of the overall structure of the present invention in a stowed state;

[0013] Figure 3 It is a schematic diagram of the upper side of the overall structure of the present invention in the unfolded state;

[0014] Figure 4 It is a schematic diagram of the lower side of the overall structure of the present invention in the unfolded state.

[0015] In the figure: 1, mounting base; 2, upper shaft head; 3, lower shaft head; 4, table board skeleton; 5, motor; 6, drive shaft; 7, hinge shaft; 8, small swing arm; 9, L-link; 10, S-link; 11, seam filling link; 12, rear extension head; 13, dodge groove; 14, front extension head; 15, torsion spring. Specific embodiments

[0016] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0017] According to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an externally-driven small table board folding mechanism based on six-link linkage for seam filling includes: a mounting base 1, the mounting base 1 is fixedly connected to the seat back through a positioning pin and a mounting hole, and a motor 2 is horizontally provided at the top of the mounting base 1. Drive shafts 3 penetrating through the mounting base 1 are respectively provided at both ends of the motor 2, and first shaft heads 4 are respectively provided on both sides of the bottom of the mounting base 1; a table board skeleton 5, the table board skeleton 5 is arranged on the side of the mounting base 1 away from the seat, and second shaft heads 6 are respectively provided at the bottoms of both sides of the table board skeleton 5, hinge shafts 7 are respectively provided in the middle, and small swing arms 8 are respectively hinged at the tops; an L-link 9, the top end of the L-link 9 is vertically connected to the drive shaft 3, and the other end is matched with the hinge shaft 7 through a shaft hole; an S-link 10, both ends of the S-link 10 are respectively matched with the first shaft head 4 and the second shaft head 6 through shaft holes, and the length of the S-link 10 is less than the length of the L-link 9; a seam filling link 11, one end of the seam filling link 11 is hinged and matched with the free end of the small swing arm 8, and the other end is hinged to the area near the hinge shaft 7 in the middle of the L-link 9. The tops of the L-link 9 and the seam filling link 11 are flush in the unfolded state.

[0018] In the above setting, the tabletop frame 5 is used to install the tabletop and the outer bottom shell of the small table. The L-link 9, S-link 10, and seam-filling link 11 on both sides of the tabletop frame 5 together form a six-link mechanism. The tabletop part of the small table is provided with slots corresponding to the movement areas of the L-link 9 and the seam-filling link 11, so as to meet the flipping movement of the small table. The L-link 9 drives the six-link mechanism to work under the drive of the motor 2, realizing the smooth unfolding and folding of the small table, and using the seam-filling link 11 to eliminate the gaps on the tabletop, so that the L-link 9, the seam-filling link 11, and the tabletop form an integral planar structure to meet the flat use requirements of the small table.

[0019] During the flipping movement of the tabletop frame 5, the motor 2 drives the L-link 9 to rotate through the drive shafts 3 at both ends, and as the driving part, it transmits power to the entire six-link system. The rotation of the L-link 9 pushes the tabletop frame 5 to unfold or fold through the hinge shaft 7, and at the same time drives the seam-filling link 11 to move. The L-link 9 and the S-link 10 form the main support frame. The L-link 9 provides the unfolding force, and the S-link 10 restricts the movement trajectory to ensure the smooth opening and closing of the tabletop frame 5. When the tabletop frame 5 is unfolded, the seam-filling link 11 is driven by the L-link 9 to be pushed upward to fill the gaps generated by the flipping movement in the traditional four-link mechanism; when folding, it contracts synchronously to avoid interference. In addition, in the unfolded state, the seam-filling link 11 is flush with the top of the L-link 9, forming a continuous closed surface to eliminate the slots required for the flipping of the link in the traditional design. The precise control of the motor 2 further ensures that all links always cooperate closely during the movement process.

[0020] The seam-filling link 11 has the same thickness as the L-link 9 and the S-link 10 and is flush; one end of the seam-filling link 11 away from the small swing arm 8 is provided with a rear extension head 12, and the side of the L-link 9 away from the mounting seat 1 is provided with an avoidance groove 13 corresponding to the rear extension head 12. One end of the seam-filling link 11 away from the L-link 9 is provided with a front extension head 14, and the small swing arm 8 is located on the side of the seam-filling link 11.

[0021] Through the above setting, the seam-filling link 11 further optimizes the seam-filling effect between the seam-filling link 11 and the L-link 9 through the cooperation of the rear extension head 12 and the avoidance groove 13, reducing the size of the gaps on the tabletop of the small table. The side-mounted small swing arm 8 is convenient to be hidden outside the slot on the tabletop, avoiding interference with the movement of the seam-filling link 11.

[0022] A torsion spring 15 is provided between the L-link 9 and the mounting seat 1. The torsion spring 15 applies a return support to the L-link 9, thereby eliminating the slack generated after the six-link mechanism is stored and effectively suppressing the generation of noise.

[0023] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An externally-driven small table board folding mechanism based on a six-link linkage for filling gaps, characterized in that, Comprising: A mounting base (1), the mounting base (1) is fixedly connected to the seat back through a positioning pin and a mounting hole, and a motor (2) is horizontally provided at the top of the mounting base (1). Driving shafts (3) penetrating through the mounting base (1) are respectively provided at both ends of the motor (2), and first shaft heads (4) are respectively provided at both sides of the bottom of the mounting base (1); A tabletop skeleton (5), the tabletop skeleton (5) is arranged on the side of the mounting base (1) away from the seat, and second shaft heads (6) are respectively provided at the bottoms of both sides of the tabletop skeleton (5), hinge shafts (7) are respectively provided in the middle, and small swing arms (8) are respectively hinged at the tops; An L-shaped connecting rod (9), the top end of the L-shaped connecting rod (9) is vertically connected to the driving shaft (3), and the other end is matched with the hinge shaft (7) through a shaft hole; An S-shaped connecting rod (10), both ends of the S-shaped connecting rod (10) are respectively matched with the first shaft head (4) and the second shaft head (6) through shaft holes, and the length of the S-shaped connecting rod (10) is less than the length of the L-shaped connecting rod (9); A gap-filling connecting rod (11), one end of the gap-filling connecting rod (11) is hinged and matched with the free end of the small swing arm (8), and the other end is hinged to the area of the middle part of the L-shaped connecting rod (9) close to the hinge shaft (7).

2. The folding mechanism of the externally-driven small table board based on six-link linkage for seam filling according to claim 1, characterized in that: The thickness of the gap-filling connecting rod (11) is equal to that of the L-shaped connecting rod (9) and the S-shaped connecting rod (10), and they are flush; a rear extension head (12) is provided at one end of the gap-filling connecting rod (11) away from the small swing arm (8), and a dodging groove (13) is provided on the side of the L-shaped connecting rod (9) away from the mounting base (1) corresponding to the rear extension head (12).

3. The folding mechanism of the externally-driven small table board based on six-link linkage for filling gaps according to claim 2, wherein: A front extension head (14) is provided at one end of the gap-filling connecting rod (11) away from the L-shaped connecting rod (9), and the small swing arm (8) is located at the side part of the gap-filling connecting rod (11).

4. The folding mechanism of the externally driven small table board based on the six-link linkage for seam filling according to claim 3, characterized in that: A torsion spring (15) is provided between the L-shaped connecting rod (9) and the mounting base (1).

5. The folding mechanism of an externally-driven small table board based on six-link linkage for filling gaps according to claim 1, wherein: The tops of the L-shaped connecting rod (9) and the gap-filling connecting rod (11) are flush in the unfolded state.

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