Manual seat back row adjusting tool based on connecting rod mechanism

Abstract

The invention discloses a manual adjustment seat back row adjusting tool based on a connecting rod mechanism, which comprises a connecting rod mechanical arm controlled by a back row passenger to adjust the lifting action of a pull rod of a front row manual adjustment seat, the connecting rod mechanical arm comprises a lifting arm, a force application arm, a first supporting arm and a second supporting arm, the first supporting arm is used for providing a rotating supporting point for the lifting arm, and the second supporting arm is used for providing a rotating supporting point for the lifting arm; the second supporting arm provides jacking force for the lifting arm to achieve rotation, the jacking force of the second supporting arm is provided by the force application arm, a positioning supporting point of the force application arm is provided by the first supporting arm, and the connecting rod mechanical arm is provided with a sliding supporting point between the pull rod and the force application end of the rear row passenger. According to the tool, the swing amplitude of the connecting rod mechanical arm can be large enough in a narrow space below the cushion so that the connecting rod mechanical arm can rotate to the angle and the height capable of lifting the unlocking pull rod, passengers in the rear row can conveniently adjust a seat in the front row to move forwards or backwards so as to obtain a larger leg space in the rear row, the market prospect is wide, millions of family cars are convenient to use, and the practicability is high. And the comfortable driving experience is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, and in particular to a manual seat rear adjustment tool based on a connecting rod mechanism. Background Art

[0002] The number of cars in my country has exceeded 450 million, and the market share of private cars has continued to rise. Cars have become an indispensable means of transportation in people's production and life. Private cars, from entry-level to flagship models, are equipped with different levels of manual adjustment seat mode and electric adjustment seat mode, and the highest-configuration flagship model is equipped with a boss button, that is, passengers in the back seat can use the boss button to adjust the displacement and backrest angle of the front seat to expand the legroom and vision space in the back row, while the second-highest configuration and below models are not equipped with this function, especially the entry-level models are only equipped with manual adjustment seats, and the number of manual adjustment seats in the current market is huge. Figure 1 A pull rod is set between the front side of the seat cushion and the slide rail. When the pull rod is manually pulled up, the seat and the slide rail can slide freely forward and backward, which makes it convenient for passengers to adjust the front seat forward or backward. This type of structure is generally used by mainstream car companies to implement manual seat adjustment.

[0003] However, in real life, the legroom of rear passengers is still affected by the rearward movement of the front driver or passenger seat, resulting in a poor rear riding experience. A typical example is: when an online car-hailing vehicle is carrying passengers, the legroom in the rear is too small, and the driver is expected to adjust the front passenger seat forward, but the front passenger seat can only be adjusted by manually controlling the lever from the passenger seat. Even if the driver has adjusted the passenger seat forward in advance, when the online car-hailing vehicle is shared, the passenger seat will still sit on the passenger seat, and the seat will still be adjusted backward. The driver has to frequently manually adjust the passenger seat, which is extremely inconvenient.

[0004] There are still many vehicles in the society that do not have adjustable front seats in the rear row. Moreover, the scheme of modifying the electric seats with wired or wireless remote control will damage the electric control circuit of the seats, resulting in the modification of the electronic control of the vehicle, which directly affects the vehicle warranty and lifetime three-electric warranty. Therefore, private car owners in the market rarely choose to modify the electric adjustment seats. They can only buy special models at a high price. The second-highest configuration, mid-range configuration and low-end configuration models cannot allow the rear passengers to adjust the front seats. The market needs to promote a solution that is convenient for the rear passengers to adjust the front manual adjustment seats.

[0005] Based on the above reasons, our company has previously designed and submitted a patent application for a rear seat lifting adjustment based on the lever principle, see application number: 2023229029801, patent application document named A manual seat rear adjustment tool based on a connecting rod mechanism, but after measuring the space of the front seats of the actual vehicle, it was found that the gap between the seat cushion and the vehicle panel of the front seat was small, and due to the obstruction of the rear air outlet, it was difficult to rotate the mechanical arm to the angle that could lift the unlocking pull rod. The range of the mechanical arm's up and down swing in the narrow space is not enough to lift the pull rod, and it is difficult to adapt to such models with small gaps, and the rear passengers cannot unlock the locks of the front seats on the slide rails. For this reason, it is necessary for us to further design and improve the adjustment tool so that the mechanical arm can swing sufficiently in the narrow space under the seat cushion, which is sufficient to adapt to all models of manually adjustable seats on the market, so that the rear passengers can enjoy the spatial freedom brought by the boss chair. Riding experience. Summary of the invention

[0006] The purpose of the present invention is: to facilitate the rear passengers to adjust the front manual seat to move forward or backward, and to allow the mechanical arm to swing sufficiently large in the narrow space under the seat cushion, enough to allow the mechanical arm to rotate to an angle and height that can lift the unlocking rod, so as to obtain a larger leg room and sight space in the rear row. We have designed and proposed a manual seat rear adjustment tool based on a connecting rod mechanism, which greatly improves the riding space for the rear passengers, reduces the sense of space oppression, and expands the field of vision.

[0007] The technical solutions adopted to solve the above problems are:

[0008] A manual seat rear adjustment tool based on a connecting rod mechanism includes a connecting rod mechanical arm for controlling the lifting and lowering action of a pull rod of a front manual seat by a rear passenger, the connecting rod mechanical arm including a lifting arm movably hinged to the pull rod, a force-applying arm to which the rear passenger applies force, a first supporting arm and a second supporting arm hidden in a gap between a seat cushion and a vehicle floor, the first supporting arm being used to provide a rotational support point for the lifting arm, and the second supporting arm providing a thrust force for the lifting arm to realize rotation.

[0009] The pushing force of the second support arm is provided by the force applying arm, and the positioning support point of the force applying arm is provided by the first support arm. The connecting rod mechanical arm is provided with a sliding support point between the pull rod and the force applying end of the rear passenger. The sliding support point provides a lever fulcrum for the connecting rod mechanical arm, and the connecting rod mechanical arm can slide freely forward and backward in the gap between the seat cushion and the vehicle floor, and enables the connecting rod mechanical arm to slide forward or backward synchronously with the front manual adjustment seat.

[0010] Furthermore, the lifting arm, the first supporting arm, the force applying arm and the second supporting arm are adjacent to each other in sequence and movably hinged to form a quadrilateral.

[0011] Furthermore, at least one hinge ring is provided between the lifting arm and the pull rod, so that the lifting arm can stably rotate on a plane parallel to the rotation planes of the pull rod.

[0012] Furthermore, the first support arm or the second support arm is provided with a connecting rod, and the connecting rod can freely move up and down and forward and backward in the gap between the seat cushion and the vehicle floor without interference.

[0013] Furthermore, at least one roller rolling in a direction parallel to the slide rail is provided on the connecting rod.

[0014] Furthermore, the roller is at least arranged on any one side of the air outlet below the front manually adjustable seat.

[0015] Furthermore, a pressure block is provided at the rear end of the force-applying arm to facilitate the force-applying by rear passengers.

[0016] Furthermore, the length of the connecting rod mechanical arm is adjustable.

[0017] Furthermore, the connecting rod mechanical arm is provided with a torsion spring at least at the hinge of two adjacent arms, so that the force arm applies force, the lifting arm lifts the pull rod to achieve unlocking, and after the seat is adjusted, the connecting rod mechanical arm is restored to its original position under the action of the torsion spring elastic force.

[0018] Furthermore, the roller and the pressure block are made of soft materials to reduce shock, noise and collision.

[0019] The beneficial effects of the present invention are:

[0020] 1. The manual seat rear adjustment tool based on the linkage mechanism can be controlled by the rear passengers with the help of the linkage mechanical arm to adjust the height of the front seat pull rod upward or downward, making it convenient for the rear passengers to move the front seats forward or backward, which is convenient and practical;

[0021] 2. The adjustment tool is installed under the front seat. The swing range of the connecting rod mechanical arm is large enough in the narrow space under the seat cushion, which is enough to make the connecting rod mechanical arm turn to the angle and height that can lift the unlocking lever. It is well concealed. The force arm can avoid the gap for the rear passengers to put their feet. The hinge seat at the front end of the lifting arm does not affect the riding experience of the front seat passengers, so as to obtain more legroom and sight space in the back row.

[0022] 3. A soft material pressure block is set at the rear end of the mechanical arm, which can facilitate the rear passengers to apply force with their feet and hold the backrest with both hands to move the seat forward or backward. The roller is also made of soft material, which does not produce abnormal noise and does not affect the driving safety of the vehicle and the life safety of the passengers;

[0023] 4. It is very friendly to vehicles with manual seats on the market. By installing this tool, the front seats can be adjusted by mechanical transmission, instead of changing the electronic control of the car through the circuit to achieve remote adjustment of the front seats, without affecting the owner's lifetime three-electric warranty and vehicle warranty rights;

[0024] 5. This tool is low-cost and practical, allowing low- and mid-range models to enjoy the treatment of high-end flagship models. It has broad market prospects and will facilitate the use of cars by tens of millions of families, giving them a comfortable driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side view of the manual seat rear adjustment tool based on the linkage mechanism after being installed in the vehicle in Example 1;

[0026] Figure 2 This is a schematic diagram of the state in which the pull rod of the manual seat rear adjustment tool based on the linkage mechanism in Example 1 is lifted;

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 A top view of a manual seat rear adjustment tool based on a linkage mechanism in Example 1;

[0029] Figure 5 It is a side view of the manual seat rear adjustment tool based on the linkage mechanism of Example 1;

[0030] Figure 6 It is a side view of the manual seat rear adjustment tool based on the linkage mechanism of Example 2;

[0031] Among them, 1-air outlet, 2-slide rail, 3-car floor, 4-pull rod, 5-hinge ring, 6-lifting arm, 7-first support arm, 7a-first front half support arm, 7b-first rear half support arm, 8-second support arm, 8a-second front half support arm, 8b-second rear half support arm, 9-seat cushion, 10-force arm, 11-pressure block, 12-shoe, 13-roller bracket, 14-roller, 15-first hinge shaft, 16-torsion spring, 17-force connecting rod, 18-second hinge shaft, 19-third hinge shaft, 20-lifting connecting rod, 21-fourth hinge shaft, 22-locking piece. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in the form of embodiments in conjunction with the accompanying drawings.

[0033] Example 1 :

[0034] See also Figure 1 and Figure 2 The present embodiment proposes a manual seat rear adjustment tool based on a linkage mechanism, comprising a linkage mechanical arm for adjusting the lifting action of the pull rod of the front manual seat controlled by the rear passengers, the linkage mechanical arm comprising a lifting arm, a first support arm, a force application arm and a second support arm which are adjacent to each other and movably hinged in sequence to form a quadrilateral, the lifting arm and the pull rod being movably hinged through a hinge ring so that the lifting arm can stably rotate on a plane parallel to the rotation plane of the pull rod, the force application arm is applied by the rear passengers, the first support arm and the second support arm are hidden in the gap between the seat cushion and the vehicle floor, the first support arm and the lifting arm are movably hinged to each other through a hinge ring so that the lifting arm can stably rotate on a plane parallel to the rotation plane of the pull rod, the force application arm is applied by the rear passengers, the first support arm and the second support arm are hidden in the gap between the seat cushion and the vehicle floor, the first support arm and the lifting arm The upper end of the lifting link integrally arranged at the rear end is movably hinged through the third hinge shaft, which is used to provide a rotation support point for the lifting arm, the lower end of the lifting link is connected to the lifting arm, and is movably hinged with the second support arm through the fourth hinge shaft, the second support arm provides a top thrust for the lifting arm to realize rotation, and the top thrust of the second support arm is provided by the force applying arm, the upper end of the force applying link integrally arranged at the front end of the force applying arm is movably hinged with the first support arm through the first hinge shaft to obtain the positioning support provided by the first support arm, the lower end of the force applying link is connected to the force applying arm, and is movably hinged with the second support arm through the second hinge shaft,

[0035] The connecting rod mechanical arm is provided with a sliding support point in the middle of the first support arm, and a connecting rod is provided at a direction perpendicular to the first support arm. The connecting rod can move freely up and down, front and back without interference in the gap between the seat cushion and the vehicle floor, and enables the connecting rod mechanical arm to slide forward or backward synchronously with the front manual adjustment seat.

[0036] See also Figure 4 Both ends of the connecting rod are provided with rollers that roll in a direction parallel to the slide rail.

[0037] See also Figure 4 The rollers are arranged on both sides of the air outlet below the front manually adjustable seats.

[0038] See also Figure 1 and Figure 2 The rear end of the force-applying arm is provided with a pressure block for the rear passengers to apply force.

[0039] See also Figure 3 A torsion spring is provided at the hinge of any two adjacent arms of the connecting rod mechanical arm, or a tension spring with the same function as the torsion spring is used to pull the two adjacent arms or the two opposite arms, so that the force arm applies force, the lifting arm lifts the pull rod to achieve unlocking, and the posture of the connecting rod mechanical arm is reset after the seat adjustment is completed.

[0040] A further implementation scheme is that the roller and the pressure block are made of soft materials to reduce shock, noise and collision.

[0041] Example 2 :

[0042] See also Figure 6 The present embodiment proposes a manual seat rear adjustment tool based on a linkage mechanism, including a linkage mechanical arm for adjusting the lifting and lowering action of the pull rod of the front manual seat controlled by the rear passengers, the linkage mechanical arm including a lifting arm, a first support arm, a force arm and a second support arm which are adjacent to each other and movably hinged in sequence to form a quadrilateral. The technical feature distinguishing the present embodiment 2 from the embodiment 1 is that the length of the linkage mechanical arm is adjustable. More specifically, the first support arm and the second support arm are adjustable in length by splicing and locking the front and rear sections, that is, the first support arm includes a first front half support arm and a first rear half support arm, the second support arm includes a second front half support arm and a second rear half support arm, and the overlapping parts of the first front half support arm and the first rear half support arm are provided with connecting buckles or connecting through holes which are convenient for stepless adjustment, and the front and rear sections are connected by a locking member, and the same is true for the second support arm.

[0043] The advantages of this embodiment 2 are: the lengths of the front manual seat cushions equipped in different car models are different, and the heights of the gaps between the cushions and the vehicle floor are also different, which can allow the rear space control to have a limited force rotation angle. By freely adjusting the lengths of the first support arm and the second support arm, the appropriate length of the connecting rod mechanism can be adapted and selected, and the lengths of the first support arm and the second support arm can be adjusted to different lengths. When the rear passengers have a certain force rotation angle, the lifting arm can obtain a large or small rotation lifting angle. Therefore, this embodiment 2 can be applicable to most car models equipped with manual seats on the market, with a high degree of standardization, a wide range of applications, higher market recognition, and better mechanical stability.

[0044] The above describes in detail the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes, modifications, substitutions and variations can be made within the knowledge scope of ordinary technicians in the field without departing from the spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rear-row manual seat adjustment tool based on a linkage mechanism, comprising a linkage mechanical arm for adjusting the lifting and lowering action of the pull rod of the front manual seat controlled by the rear passengers, characterized in that: The connecting rod mechanical arm includes a lifting arm movably hinged with the pulling rod, a force arm applied by the rear passengers, a first support arm and a second support arm hidden in the gap between the seat cushion and the vehicle floor. The first support arm is used to provide a rotation support point for the lifting arm, and the second support arm provides a thrust force for the lifting arm to achieve rotation.

2. The manual seat rear adjustment tool based on the linkage mechanism according to claim 1 is characterized in that: The pushing force of the second support arm is provided by the force applying arm, and the positioning support point of the force applying arm is provided by the first support arm. The connecting rod mechanical arm is provided with a sliding support point between the pull rod and the force applying end of the rear passenger. The sliding support point provides a lever fulcrum for the connecting rod mechanical arm, and the connecting rod mechanical arm can slide freely forward and backward in the gap between the seat cushion and the vehicle floor, and enables the connecting rod mechanical arm to slide forward or backward synchronously with the front manual adjustment seat.

3. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: The lifting arm, the first supporting arm, the force applying arm and the second supporting arm are adjacent to each other in sequence and are movably hinged to form a quadrilateral.

4. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: At least one hinge ring is arranged between the lifting arm and the pull rod, which enables the lifting arm to stably rotate on a plane parallel to the rotation planes of the pull rod.

5. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: The first support arm or the second support arm is provided with a connecting rod, and the connecting rod can freely move up and down, forward and backward without interference in the gap between the seat cushion and the vehicle floor.

6. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: The connecting rod is provided with at least one roller which rolls in a direction parallel to the slide rail.

7. The manual seat rear adjustment tool based on a linkage mechanism according to claim 6, characterized in that: The roller is at least arranged on any one side of the air outlet below the front manually adjustable seat.

8. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: The length of the connecting rod mechanical arm is adjustable.

9. The manual seat rear adjustment tool based on a connecting rod mechanism according to any one of claims 1 to 8, characterized in that: The connecting rod mechanical arm is provided with a torsion spring at least at a hinge point between two adjacent arms.

10. The manual seat rear adjustment tool based on a linkage mechanism according to claim 1, characterized in that: A pressure block is arranged at the rear end of the force-applying arm to facilitate the force-applying by rear passengers.

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