Ultralow sitting posture height-adjusting seat framework

Abstract

The utility model relates to the field of seat frameworks, in particular to an ultra-low sitting posture heightening seat framework which comprises a sliding way, a front connecting rod support, a rear connecting rod support, a front connecting rod, a rear connecting rod and a side plate, the front connecting rod support and the rear connecting rod support are fixedly welded to the two ends of the top of the sliding way respectively, and the rear connecting rod is hinged to the rear connecting rod support. A front connecting rod is hinged to the front connecting rod support, and the end, away from the front connecting rod support, of the front connecting rod and the end, away from the rear connecting rod support, of the rear connecting rod are hinged to the two ends of the side plate respectively. The original welding mode is replaced by the bolt connection mode, the corresponding cost is not changed much, but compared with a common low sitting posture adjusting mechanism, the structure is simpler, and the weight is lighter.

Description

Technical Field

[0001] The utility model relates to the field of seat frames, in particular to an ultra-low sitting posture height-adjustable seat frame. Background Art

[0002] 1. The existing seat frame generally only has the function of conventional sitting height adjustment, and cannot achieve ultra-low sitting height adjustment;

[0003] 2. The ultra-low posture seat frame is more complex and heavier than the general posture seat frame, and the procurement and production costs are relatively higher.

[0004] Therefore, it is necessary to provide a kind of ultra-low sitting posture height-adjusting seat frame to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a seat frame with an ultra-low sitting posture and height adjustment function.

[0006] The utility model provides an ultra-low sitting posture adjustment seat frame, comprising a slide, a front connecting rod bracket, a rear connecting rod bracket, a front connecting rod, a rear connecting rod and a side plate, wherein the front connecting rod bracket and the rear connecting rod bracket are respectively welded and fixed at the top two ends of the slide, the rear connecting rod bracket is hinged on the rear connecting rod bracket, the front connecting rod is hinged on the front connecting rod bracket, one end of the front connecting rod away from the front connecting rod bracket and the other end of the rear connecting rod away from the rear connecting rod bracket are respectively hinged at the two ends of the side plate, the slide, the front connecting rod bracket, the rear connecting rod bracket, the front connecting rod, the rear connecting rod and the side plate form a parallelogram four-bar mechanism, and also include a motor fixed on the side plate, the output shaft of the motor is fixedly connected with a gear, the rear connecting rod is hinged with a connecting plate, one end of the connecting plate is fixed with an arc-shaped rack, and the arc-shaped rack is meshed with the gear, the side plate is rotatably connected with a roller, the roller contacts and cooperates with the side wall of the arc-shaped rack, and the arc-shaped rack is arranged between the gear and the roller.

[0007] Preferably, the front connecting rod bracket is hinged to the front connecting rod via bolts.

[0008] Preferably, the connecting plate and the rear connecting rod are hinged by bolts.

[0009] Preferably, the rear connecting rod and the side plate are hinged by expansion tube riveting, and the front connecting rod and the side plate are hinged by rivet riveting.

[0010] Preferably, the front connecting rod, the rear connecting rod and the side plates are all stamped parts.

[0011] Compared with the related art, the utility model provides the following beneficial effects:

[0012] According to the two sitting postures in the above figure, the arc-shaped rack never exceeds the upper end of the side panel, ensuring that the height adjustment will not cause excessive inclination into the upper space, thus affecting the riding comfort.

[0013] Compared with the traditional fan-shaped tooth plate height adjustment mechanism, this high-profile structure only separates the arc-shaped rack and replaces the original welding method with bolt connection. The corresponding cost is actually not much different, but compared with the common low sitting posture adjustment mechanism, the structure is relatively simpler and lighter (the common high-profile structure weighs about 1.3Kg, while the connecting plate, arc-shaped rack, motor and gear of this technical solution weigh about 0.9kg). Material saving is the most basic cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 The seat frame of the utility model is at a high point;

[0016] Figure 3 The seat frame of the utility model is at a low point.

[0017] Numbers in the figure: 1, slide; 2, front connecting rod bracket; 3, rear connecting rod bracket; 4, front connecting rod; 5, rear connecting rod; 6, side plate; 7, motor; 8, gear; 9, connecting plate; 10, arc rack; 11, roller. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0019] Please refer to Figures 1 to 3 A super low sitting posture height adjustment seat frame includes a slide 1, a front connecting rod bracket 2, a rear connecting rod bracket 3, a front connecting rod 4, a rear connecting rod 5 and a side plate 6. The front connecting rod 4, the rear connecting rod 5 and the side plate 6 are all stamping parts with high strength and are easy to manufacture with complex shapes.

[0020] A front link bracket 2 and a rear link bracket 3 are welded and fixed to the two ends of the top of the slide 1, respectively. A rear link 5 is hinged on the rear link bracket 3 (the hinge point is A), and a front link 4 is hinged on the front link bracket 2 (the hinge point is B, and the front link bracket 2 and the front link 4 are hinged by bolts for easy installation and disassembly).

[0021] One end of the front link 4 away from the front link bracket 2 and one end of the rear link 5 away from the rear link bracket 3 are respectively hinged at the two ends of the side plate 6 (the hinge points are C and D, the rear link 5 and the side plate 6 are hinged by expansion tube riveting, and the front link 4 and the side plate 6 are hinged by rivet riveting, and the connection is relatively reliable).

[0022] The slide 1, the front link bracket 2, the rear link bracket 3, the front link 4, the rear link 5 and the side plate 6 form a parallelogram four-bar mechanism, and also include a motor 7 fixed on the side plate 6, the output shaft of the motor 7 is fixedly connected to the gear 8, and the rear link 5 is hinged with a connecting plate 9 (the hinge point is E, the front link bracket 2 and the front link 4 are hinged by bolts, which is convenient for replacing components such as the connecting plate 9 and the arc-shaped rack 10), one end of the connecting plate 9 is fixed with an arc-shaped rack 10 (fixed by rivets, with high connection strength), and the arc-shaped rack 10 is meshed with the gear 8, and a roller 11 is rotatably connected to the side plate 6, the roller 11 is in contact with the side wall of the arc-shaped rack 10, and the arc-shaped rack 10 is arranged between the gear 8 and the roller 11.

[0023] The motor 7 drives the gear 8 to rotate, thereby driving the arc rack 10 to move. Due to the existence of the roller 11, the arc rack 10 and the connecting plate 9 drive the rear link 5 to move, thereby causing the slide 1, the front link bracket 2, the rear link bracket 3, the front link 4, the rear link 5 and the side plate 6 to form a parallelogram four-bar mechanism to produce an angle change, so that the distance between the side plate 6 and the slide 1 changes, such as Figure 2 The seat frame is shown in the high point position. Figure 3 Seat frame shown in lowered position.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A seat frame for adjusting the height of an ultra-low sitting posture, comprising a slideway (1), a front connecting rod bracket (2), a rear connecting rod bracket (3), a front connecting rod (4), a rear connecting rod (5) and a side plate (6), wherein the front connecting rod bracket (2) and the rear connecting rod bracket (3) are respectively welded and fixed at the top two ends of the slideway (1), the rear connecting rod bracket (3) is hingedly connected to the rear connecting rod (5), the front connecting rod bracket (2) is hingedly connected to the front connecting rod (4), one end of the front connecting rod (4) away from the front connecting rod bracket (2) and one end of the rear connecting rod (5) away from the rear connecting rod bracket (3) are respectively hingedly connected to the two ends of the side plate (6), and the slideway (1), the front connecting rod bracket (2), the rear connecting rod bracket (3), the front connecting rod (4), the rear connecting rod (5) and the side plate (6) form a parallelogram four-bar linkage, characterized in that: The invention also comprises an electric motor (7) fixed on the side plate (6), the output shaft of the electric motor (7) being fixedly connected to a gear (8), a connecting plate (9) being hingedly connected to the rear connecting rod (5), an arc-shaped rack (10) being fixed to one end of the connecting plate (9), and the arc-shaped rack (10) being meshed with the gear (8), a roller (11) being rotatably connected to the side plate (6), the roller (11) being in contact with the side wall of the arc-shaped rack (10), and the arc-shaped rack (10) being arranged between the gear (8) and the roller (11).

2. The ultra-low sitting height-adjustable seat frame according to claim 1, characterized in that: The front connecting rod bracket (2) is hinged to the front connecting rod (4) via bolts.

3. The ultra-low sitting height-adjustable seat frame according to claim 1, characterized in that: The connecting plate (9) is hinged to the rear connecting rod (5) via bolts.

4. The ultra-low sitting height-adjustable seat frame according to claim 1, characterized in that: The rear connecting rod (5) and the side plate (6) are hingedly connected by expansion tube riveting, and the front connecting rod (4) and the side plate (6) are hingedly connected by rivet riveting.

5. The ultra-low sitting height-adjustable seat frame according to claim 1, characterized in that: The front connecting rod (4), the rear connecting rod (5) and the side plate (6) are all stamped parts.

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