Folding limiting hinge for automobile seat

Abstract

The utility model discloses a turnover limiting hinge for an automobile seat. The turnover limiting hinge comprises a fixed side hinge plate, a turnover side hinge plate, a driving hinge rod, a driven hinge rod and a driving shaft rod. The hinge structure is optimized, large-amplitude overturning is achieved, and therefore the hinge is suitable for diversified use scenes, and individual requirements of different users are met; a simple and compact design is adopted, the seat overturning mechanism is very suitable for being applied to an automobile and other environments with limited space, the seat overturning function is achieved, and meanwhile the stability and reliability in the adjusting process can be guaranteed through the structural design of the seat overturning mechanism. In the seat adjusting process, the matching degree between the driving device and the hinge is higher, cooperative work is tighter, and the overall performance and operation convenience of the seat adjusting system are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field especially relates to a folding limiting hinge for automobile seat. BACKGROUND

[0002] The hinge for automobile seat as the key part of connecting seat and backrest, its performance directly influences the use experience of seat. The existing hinge for automobile seat mainly adopts the following structure:

[0003] Flat hinge: simple structure, mainly by two flat metal sheets, through rivet or screw fixed on seat and backrest, can realize small angle overturning of seat, but there is certain limitation;

[0004] Ball bearing hinge: adopt ball bearing as rotating core, has good wear resistance and rotating flexibility, however, its structure is relatively complex, cost is higher, and easy to appear jam phenomenon when overturning at large angle;

[0005] Hydraulic hinge: utilize liquid pressure to realize overturning of seat, has buffering effect, can reduce noise, but this hinge has higher requirement to sealing performance, and higher maintenance cost.

[0006] Although the existing hinge for automobile seat meets the demand of seat overturning to some extent, but still has the following technical problems: the existing hinge mainly considers small angle overturning when designing, leading to that seat cannot realize large angle overturning in use process, which limits the expansion of seat function, such as cannot realize flat lying function. SUMMARY

[0007] To solve the above technical problems, the utility model provides a folding limiting hinge for automobile seat. To have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This part is not a general review, nor is it intended to determine the key / important constituent elements or delineate the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0008] The utility model adopts the following technical scheme:

[0009] Provide a folding limiting hinge for automobile seat, including: fixed side hinge plate, overturning side hinge plate, initiative hinge rod, driven hinge rod and drive shaft rod, long circular guide groove is set up on the fixed side hinge plate, one end of initiative hinge rod is hinged with drive shaft rod, and the end of drive shaft rod is embedded in long circular guide groove, the other end of initiative hinge rod is hinged with overturning side hinge plate, two ends of driven hinge rod are hinged with fixed side hinge plate and end shaft rod respectively, the middle position of initiative hinge rod is hinged with the middle position of driven hinge rod.

[0010] Further, the fixed side hinge plates and the number of the active hinge rods are two, two said fixed side hinge plates are arranged side by side and are spaced apart, and the active hinge rods are located on the side facing two said fixed side hinge plates; one end of the active hinge rod is provided with a first through hole, the rod body of the driving shaft rod passes through the first through hole, and the two ends of the driving shaft rod are respectively embedded in the long circular guide groove provided on the two fixed side hinge plates.

[0011] Further, the number of the turnover side hinge plates and the driven hinge rods is two, two said turnover side hinge plates are arranged side by side and correspond to the positions of two said fixed side hinge plates respectively, and two said driven hinge rods are located on the side facing two said active hinge rods respectively.

[0012] Further, the turnover side shaft rod is connected with two said turnover side hinge plates respectively.

[0013] Further, the fixed side shaft rod is connected with two said fixed side hinge plates respectively; the inner side of the turnover side hinge plate is provided with a track groove, and the end part of the end shaft rod is embedded in the track groove; one end of the driven hinge rod is provided with a first circular groove, and the rod body of the fixed side shaft rod passes through the first circular groove; the other end of the driven hinge rod is provided with a second circular groove, and the rod body of the end shaft rod passes through the second circular groove.

[0014] Further, the middle support shaft rod is provided with a through groove in the middle part of the active hinge rod and the middle part of the driven hinge rod, and the rod body of the middle support shaft rod passes through the through groove.

[0015] Further, the active hinge rod and the driven hinge rod are arc-shaped hinge rods.

[0016] Further, the mounting grooves are provided on the fixed side hinge plates and the turnover side hinge plates.

[0017] The utility model brings the beneficial effect that:

[0018] 1. The hinge structure is optimized, a large degree of turnover is realized, the maximum turnover angle can reach 180°, thereby adapting to diversified use scenes and meeting individualized needs of different users;

[0019] 2. The simple and compact design is suitable for application in a space-limited environment such as a car to realize the turnover function of the seat, and the structural design of the application can ensure the stability and reliability during adjustment, and has a limiting function to ensure that the seat does not exceed the set angle during turnover, thereby improving safety;

[0020] 3. The application is convenient to connect with a driving device such as an electric push rod or a pneumatic rod, so that the driving device and the hinge have higher matching degree and work more closely during seat adjustment, thereby improving the overall performance and operation convenience of the seat adjustment system. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a perspective view of the folding limiting hinge of the present application;

[0023] Figure 2 is a side structure schematic view of the folding limiting hinge of the present application when fully opened;

[0024] Figure 3 is the A view of Figure 2 ;

[0025] Figure 4 is the B view of Figure 2 ;

[0026] Figure 5 is a side structure schematic view of the folding limiting hinge of the present application when fully folded;

[0027] Figure 6 is the C view of Figure 5 ;

[0028] Figure 7 is the D view of Figure 5 ;

[0029] Figure 8 is a position schematic view of the fixed side hinge plate, the turnover side hinge plate, the driving hinge rod and the driven hinge rod of the present application;

[0030] Figure 9 is a connection schematic view of the fixed side hinge plate, the turnover side hinge plate, the driving hinge rod and the driven hinge rod and the seat framework of the present application. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0032] As shown in the drawings, in some illustrative embodiments, a folding limiting hinge for a car seat is provided, comprising: a fixed side hinge plate 100, a turnover side hinge plate 200, a driving hinge rod 300, a driven hinge rod 400, a driving shaft rod 500, a turnover side shaft rod 600, a fixed side shaft rod 700, an end shaft rod 800, and a middle support shaft rod 900. Figures 1-9 The number of fixed side hinge plates 100 is two, and the two fixed side hinge plates 100 are arranged side by side and spaced apart by a certain distance. The fixed side hinge plate 100 is usually installed on a part of the car seat that is relatively fixed, i.e. a component that does not need to perform a turnover action, such as a seat cushion framework. A long circular guide groove 110 is formed on the fixed side hinge plate 100, which provides guidance and support for the movement of the driving shaft rod 500, ensuring the stability and accuracy of the driving shaft rod 500 when moving under the drive of the driving device.

[0033] The driving shaft rod 500 is connected to the fixed side hinge plate 100 through the long circular guide groove 110 and can be connected to a driving device such as an electric push rod or a pneumatic rod to realize its own translation. When the driving shaft rod 500 moves, it works in cooperation with the driving hinge rod 300 and the driven hinge rod 400 to realize the turnover action of the turnover side hinge plate 200, thereby realizing the electric or pneumatic turnover of the seat. In addition, the long circular guide groove 110 not only provides guidance and support for the driving shaft rod 500, but also realizes turnover limiting, preventing the seat from exceeding a safe angle during turnover, thereby improving the safety of use.

[0034] The number of turnover side hinge plates 200 is two, and the two turnover side hinge plates 200 are arranged side by side and correspond to the positions of the two fixed side hinge plates 100 respectively. Corresponding means that the fixed side hinge plate 100 and the turnover side hinge plate 200 on the same side are in the same plane, and the turnover side hinge plate 200 and the fixed side hinge plate 100 form a pair to constitute the turnover part of the hinge at both ends. The turnover side hinge plate 200 is usually installed on a component of the car seat that needs to perform a turnover action, such as a backrest framework or another part of the seat cushion framework.

[0035]

[0036] ​When the turning side hinge plate 200 is installed on the backrest framework, the position reached by the turning of the turning side hinge plate 200 is adjusted by the driving device during use, so that the backrest framework and the cushion framework have a certain included angle, the reclining chair function is realized, and a comfortable sitting posture is provided for the user. Moreover, when the turning side hinge plate 200 and the fixed side hinge plate 100 are completely opened, the backrest framework and the cushion framework are located in the same plane, the use area can be expanded, the seat is converted into a bed function, and a resting space is provided for the user.

[0037] When the fixed side hinge plate 100 and the turning side hinge plate 200 are respectively installed on the two parts of the cushion framework, and when the turning side hinge plate 200 and the fixed side hinge plate 100 are completely folded, the two parts of the cushion framework are stacked together, the seat function is realized, at this time the use area is small, and it is suitable for driving or riding state. Similarly, when the turning side hinge plate 200 and the fixed side hinge plate 100 are completely opened, the two parts of the cushion framework are located in the same plane, at this time the use area is large, and more leg space or a temporary resting plane can be provided.

[0038] The fixed side hinge plate 100 and the turning side hinge plate 200 are both provided with mounting grooves 120, which are used to realize the connection between the fixed side hinge plate 100 and the turning side hinge plate 200 and the automobile seat framework.

[0039] The driving hinge rod 300 and the driven hinge rod 400 are both arc-shaped hinge rods.

[0040] The number of the driving hinge rod 300 is two, the driving hinge rod 300 is located on the side of the two fixed side hinge plates 100 facing each other, forms the driving part of the hinge, and one end of the driving hinge rod 300 is hinged with the driving shaft rod 500, the other end of the driving hinge rod 300 is hinged with the turning side hinge plate 200, so as to realize the transmission of driving force, and then realize the turning action of the turning side hinge plate 200.

[0041] The hinging form of the driving hinge rod 300 and the driving shaft rod 500 is as follows:

[0042] One end of the driving hinge rod 300 is provided with a first through hole 310, the rod body of the driving shaft rod 500 passes through the first through hole 310, so that the driving hinge rod 300 can rotate around the driving shaft rod 500, and the two ends of the driving shaft rod 500 are respectively embedded in the long circular guide grooves 110 provided on the two fixed side hinge plates 100.

[0043] The hinging form of the driving hinge rod 300 and the turning side hinge plate 200 is as follows:

[0044] The two ends of the turnover side shaft rod 600 are connected with the two turnover side hinge plates 200 respectively; the other end of the driving hinge rod 300 is provided with a second through hole 320, and the rod body of the turnover side shaft rod 600 passes through the second through hole 320, so that the driving hinge rod 300 can rotate around the turnover side shaft rod 600.

[0045] The number of the driven hinge rods 400 is two, and the two driven hinge rods 400 are located on the sides opposite to the two driving hinge rods 300, i.e. on the inner sides of the driving hinge rods 300, to form the driven turnover part of the hinge. The two ends of the driven hinge rods 400 are respectively hingedly connected with the fixed side hinge plate 100 and the terminal shaft rod 800.

[0046] The hinged connection form of the driven hinge rod 400 and the fixed side hinge plate 100 is as follows:

[0047] The two ends of the fixed side shaft rod 700 are connected with the two fixed side hinge plates 100 respectively, and the one end of the driven hinge rod 400 is provided with a first circular groove 410, and the rod body of the fixed side shaft rod 700 passes through the first circular groove 410, so that the driven hinge rod 400 can rotate around the fixed side shaft rod 700.

[0048] The hinged connection form of the driven hinge rod 400 and the terminal shaft rod 800 is as follows:

[0049] The other end of the driven hinge rod 400 is provided with a second circular groove 420, and the rod body of the terminal shaft rod 800 passes through the second circular groove 420, so that the driven hinge rod 400 can rotate around the terminal shaft rod 800. The inner side of the turnover side hinge plate 200 is provided with a track groove 210, and the end part of the terminal shaft rod 800 is embedded in the track groove 210, so that the terminal shaft rod 800 can move along the opening direction of the track groove 210.

[0050] The middle part of the driving hinge rod 300 is hingedly connected with the middle part of the driven hinge rod 400. Specifically, the middle part of the driving hinge rod 300 and the middle part of the driven hinge rod 400 are both provided with a through groove 340, and the rod body of the middle part supporting shaft rod 900 passes through the through groove 340, so that the driving hinge rod 300 and the driven hinge rod 400 can both rotate around the middle part supporting shaft rod 900.

[0051] As shown in Figures 1-4 When the folding limiting hinge of the present application is fully opened, the hinged connection points of the driving hinge rod 300 and the driven hinge rod 400 and the fixed side hinge plate 100 are located on the diagonal lines of the fixed side hinge plate 100, and the hinged connection points of the driving hinge rod 300 and the driven hinge rod 400 and the turnover side hinge plate 200 are located on the diagonal lines of the turnover side hinge plate 200.

[0052] When the driving device acts on the driving shaft rod 500, for example, as shown in Figure 2As shown, when the telescopic cylinder is elongated, the driving shaft rod 500 moves along the long circular guide groove 110 to the direction of the turnover side hinge plate 200, and the positions of the hinge joints of the driving hinge rod 300 and the driven hinge rod 400 are designed so that the driving hinge rod 300 and the driven hinge rod 400 are turned over, finally driving the turnover side hinge plate 200 to turn over, when the driving shaft rod 500 reaches the other end of the long circular guide groove 110, as shown. Figures 5-7 As shown, the turnover side hinge plate 200 is turned over by 180° and reaches the fully folded state.

[0053] Through the simple turnover operation, the car seat can be flexibly converted between the functions of the reclining chair, the seat and the bed, meeting different use requirements, and the structural design of the hinge of the present application enables the seat to realize the diversification of functions without increasing additional space, improves the space utilization rate, and the user can adjust the angle and form of the seat according to his own needs. In addition, the structural design of the hinge of the present application is convenient to connect with various driving devices, so that the electric or pneumatic adjustment of the seat is more convenient, and the automation degree of the seat adjustment is improved.

[0054] The parallel arrangement of the two fixed side hinge plates 100 and the corresponding arrangement of the turnover side hinge plate 200, combined with the hinge form of the driving hinge rod 300 and the driven hinge rod 400, not only realizes large-angle turnover, but also increases the structural stability, reduces the vibration during turnover, makes the seat more firm during turnover, reduces the shaking and loosening, and enhances the overall stability of the seat.

[0055] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A folding and limiting hinge for a car seat, characterized in that, include: Fixed side hinge plate, flip side hinge plate, active hinge rod, driven hinge rod, and drive shaft rod; An elongated oval guide groove is provided on the fixed side hinge plate. One end of the active hinge rod is hinged to the drive shaft rod, and the end of the drive shaft rod is embedded in the elongated oval guide groove. The other end of the active hinge rod is hinged to the flip side hinge plate. The two ends of the driven hinge are respectively hinged to the fixed side hinge plate and the end shaft; The middle part of the active hinge is hinged to the middle part of the driven hinge.

2. The folding and limiting hinge for an automobile seat according to claim 1, characterized in that, The number of fixed side hinge plates and active hinge rods is two. The two fixed side hinge plates are arranged side by side and spaced a certain distance apart. The active hinge rod is located on the side where the two fixed side hinge plates face each other. One end of the active hinge rod has a first through hole, the shaft of the drive shaft rod passes through the first through hole, and the two ends of the drive shaft rod are respectively embedded in the elongated guide grooves opened on the two fixed side hinge plates.

3. A folding and limiting hinge for an automobile seat according to claim 2, characterized in that, The number of the flip-side hinge plate and the driven hinge rod is two. The two flip-side hinge plates are arranged side by side and correspond to the positions of the two fixed side hinge plates respectively. The two driven hinge rods are located on the side facing the two active hinge rods respectively.

4. A folding and limiting hinge for an automobile seat according to claim 3, characterized in that, Also includes: A flip-side shaft, the two ends of which are respectively connected to two flip-side hinge plates; The other end of the active hinge rod has a second through hole, through which the shaft of the flipping side shaft rod passes.

5. A folding and limiting hinge for an automobile seat according to claim 4, characterized in that, Also includes: Fixed side shaft; The two ends of the fixed side shaft are respectively connected to the two fixed side hinge plates; The inner side of the flip-side hinge plate has a track groove, and the end of the end shaft is embedded in the track groove; A first circular groove is formed at one end of the driven hinge rod, and the rod body of the fixed side shaft rod passes through the first circular groove; a second circular groove is formed at the other end of the driven hinge rod, and the rod body of the end shaft rod passes through the second circular groove.

6. A folding and limiting hinge for an automobile seat according to claim 5, characterized in that, Also includes: The central support shaft has through slots in the middle of both the active hinge and the driven hinge, and the shaft body passes through these through slots.

7. A folding and limiting hinge for an automobile seat according to claim 6, characterized in that, Both the active hinge and the driven hinge are arc-shaped hinges.

8. A folding and limiting hinge for an automobile seat according to claim 7, characterized in that, Both the fixed side hinge plate and the flip side hinge plate are provided with mounting grooves.

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