Seat back unlocking mechanism of automobile convenient seating system
Technical Field
The invention belongs to the technical field of automobile seat parts, and particularly relates to a seat backrest unlocking mechanism of an automobile convenient seating system.
Background
The convenient seating system (easy-entry) of the automobile seat is a set of system which is specially designed for two-row double-door automobiles or three-row four-door automobiles or business vehicles and is convenient for passengers to pass through, so that front-row seats of the two-row double-door automobiles and middle-row seats of the three-row four-door automobiles and business vehicles have front-back position adjustment and backrest angle adjustment functions, and the convenience of automobile use is greatly improved.
The convenient seating system requires that only the backrest angle adjusting function be unlocked, but not the car seat front-rear position adjusting function, and that the car seat front-rear position adjusting function be unlocked by rotating the seat backrest. Therefore, the backrest rotating unlocking mechanism of the conventional convenient seating system is extremely complex in structure, and particularly, the linkage mode of the connecting rod assembly of the unlocking mechanism and the angle adjuster is extremely complex in design, so that not only is the assembly difficult, the reliability poor, but also the production cost is high, and the problem is urgent to solve.
Disclosure of Invention
In order to solve the technical problems, the invention provides the seat backrest unlocking mechanism of the convenient seating system of the automobile, which is simple and reliable, easy to assemble and low in cost.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a convenient seat back release mechanism who sits system of car, includes base plate and sets up the control assembly and the locking component on the base plate, its main points lie in: the locking assembly comprises an angle adjuster unlocking end head and a limiting poking piece, the operating assembly comprises an execution connecting rod group for driving the limiting poking piece to rotate and an angle adjuster unlocking connecting rod for driving the execution connecting rod group, the angle adjuster unlocking connecting rod is provided with a functional hole, a shaft part of the angle adjuster unlocking end head is embedded into the functional hole and matched with the function Kong Zhoukong, the wall of the functional hole is provided with at least one interference point, and the distance between the interference point and the center point of the functional hole is smaller than the maximum radius of the shaft part; when the angle adjuster unlocking connecting rod rotates from the locking position to the unlocking position, the angle adjuster unlocking end head and the limiting shifting piece can both rotate from the locking position to the unlocking position; when the unlocking end head of the angle adjuster rotates from the locking position to the unlocking position, the unlocking connecting rod of the angle adjuster and the limiting pulling piece are both positioned at the locking position.
By adopting the structure, the function hole of the angle adjuster unlocking connecting rod is matched with the shaft hole of the shaft part of the angle adjuster unlocking end, when the angle adjuster unlocking connecting rod rotates from the locking position to the unlocking position, the angle adjuster unlocking end can rotate from the locking position to the unlocking position under the action of the interference point, meanwhile, the angle adjuster unlocking connecting rod rotates the limiting shifting piece from the locking position to the unlocking position through the execution connecting rod group, and when the angle adjuster unlocking end rotates from the locking position to the unlocking position, the angle adjuster unlocking connecting rod is not driven to rotate, and therefore the limiting shifting piece cannot rotate. Simple and ingenious structure, easy assembly, stability, reliability, small number of parts, low cost and extremely high economic and market value.
As preferable: the functional hole comprises two arc sections and two protruding sections which are arranged in a pairwise opposite manner, the maximum aperture of each protruding section is smaller than the aperture of each arc section, and each protruding section is provided with at least one interference point; the shaft part comprises two arc-shaped sections and two inscription sections which are arranged in a pairwise opposite mode, the length of each arc-shaped section is smaller than that of each arc-shaped section, and the maximum aperture of each inscription section is smaller than that of each arc-shaped section. By adopting the structure, the length of the arc-shaped section is smaller than that of the arc-shaped section, so that the shaft part of the angle adjuster unlocking end head can rotate for a certain angle to idle in the functional hole of the angle adjuster unlocking connecting rod, namely, the angle adjuster unlocking end head rotates without driving the angle adjuster unlocking connecting rod to rotate, and due to the existence of the protruding section, when the angle adjuster unlocking connecting rod rotates from the locking position to the unlocking position, the angle adjuster unlocking end head can be driven to rotate from the locking position to the unlocking position.
As preferable: the curvature of the arc-shaped section is equal to the curvature of the arc-shaped section. By adopting the structure, the outer peripheral surface of the shaft part of the unlocking end of the angle adjuster and the inner wall of the functional hole of the unlocking connecting rod of the angle adjuster are better in fit, so that the matching of the outer peripheral surface and the inner wall is more stable and reliable, and abnormal sound can be prevented.
As preferable: the inner cutting section is of a planar structure, and the protruding section is of a V-shaped planar structure which is adaptive to the inner cutting section. By adopting the structure, the functional hole of the angle adjuster unlocking connecting rod is of a butterfly-shaped structure, so that the outer peripheral surface of the angle adjuster unlocking end shaft part and the inner wall of the angle adjuster unlocking connecting rod functional hole are easier to machine and shape, and the reliability of the combination of the outer peripheral surface of the angle adjuster unlocking end shaft part and the inner wall of the angle adjuster unlocking connecting rod functional hole is further improved.
As preferable: the execution connecting rod group comprises an execution connecting rod and a middle connecting rod II, the middle part of the execution connecting rod is rotatably arranged on the base plate, one end of the execution connecting rod is used for driving the limiting shifting piece to rotate, the other end of the execution connecting rod is hinged with one end of the middle connecting rod II, and the other end of the middle connecting rod II is hinged with one end of the unlocking connecting rod of the angle adjuster. By adopting the structure, the limited space can be more fully utilized through the execution connecting rod group, and the rotation of the angle adjuster unlocking connecting rod is transmitted to the limiting shifting piece, so that the limiting shifting piece rotates from the locking position to the unlocking position, the whole structure is more compact, stable and reliable, and easy to assemble.
As preferable: the operating assembly further comprises an unlocking rocker and a middle connecting rod I, one end of the middle connecting rod I is hinged to one end, far away from the middle connecting rod II, of the angle adjuster unlocking connecting rod, the other end of the middle connecting rod I is hinged to one end of the unlocking rocker, and the middle of the unlocking rocker is rotatably arranged on the base plate. By adopting the structure, the angle adjuster unlocking connecting rod can rotate from the locking position to the unlocking position by stirring the unlocking rocker, so that the limited space is fully utilized, the whole structure is more compact, stable and reliable, and easy to assemble.
As preferable: the unlocking rocker, the middle connecting rod I, the angle adjuster unlocking connecting rod and the middle connecting rod II are positioned on one side surface of the base plate, and the supporting limiting poking piece and the executing connecting rod are positioned on the other side surface of the base plate. By adopting the structure, the whole volume can be greatly reduced, the whole structure is more compact, and the device can be installed in a narrow space.
As preferable: the base plate is provided with a guide limiting hole, the middle connecting rod II is hinged with the execution connecting rod through a pin shaft, and the pin shaft penetrates through the guide limiting hole. By adopting the structure, the limit of the whole control assembly and the locking assembly is realized, and the structure is simple and reliable and is easy to process.
As preferable: the limiting poking piece is rotatably arranged on the base plate and is elastically supported on the execution connecting rod. With the adoption of the structure, the limit shifting piece has a trend of approaching to the execution connecting rod, namely, the limit shifting piece has a trend of turning to the unlocking position, so that the unlocking process of the limit shifting piece is not easy to generate clamping stagnation.
As preferable: the base plate is rotationally connected with the rotating plate through the angle adjuster, and the unlocking end of the angle adjuster penetrates through the base plate and then is connected with the angle adjuster for locking or unlocking the angle adjuster. By adopting the structure, the structure is simple, stable and reliable.
Compared with the prior art, the invention has the beneficial effects that:
the seat backrest unlocking mechanism of the automobile convenient seating system provided by the invention has the advantages of novel structure, simplicity, reliability, easiness in assembly, small number of parts, low cost, capability of meeting the functional requirements of the convenient seating system and extremely high economic and market values.
Drawings
FIG. 1 is a schematic view of a locked state of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic view of an unlocked state of the present invention;
FIG. 4 is a rear view of FIG. 3;
FIG. 5 is a schematic diagram of the structure of the recliner unlocking link;
FIG. 6 is a schematic view of the structure of the unlocking end of the recliner;
FIG. 7 is a schematic diagram of the mating relationship of the recliner release link and the recliner release end as the recliner release link rotates;
fig. 8 is a schematic diagram of the mating relationship of the recliner unlocking link and the recliner unlocking tip when the recliner unlocking tip.
Detailed Description
The invention is further described below with reference to examples and figures.
Referring to fig. 1 to 4, a seat back unlocking mechanism of a convenient seating system of an automobile comprises a rotating plate 2, a base plate 14, and an operating assembly and a locking assembly which are all arranged on the base plate 14, wherein the rotating plate 2 and the base plate 14 are rotationally connected through a recliner 1, when the recliner 1 is locked, the rotating plate 2 and the base plate 14 cannot rotate relatively, the relative position is locked, and when the recliner 1 is unlocked, the rotating plate 2 and the base plate 14 can rotate relatively.
Referring to fig. 1 to 4, the locking assembly includes an angle adjuster unlocking end 11 and a limiting pulling piece 12. The angle adjuster unlocking end 11 is connected with the angle adjuster 1 through welding, and the angle adjuster 1 can be locked and unlocked by rotating the angle adjuster unlocking end 11, and the angle adjuster unlocking end 11 has a trend of elastic reset (a reset spring is arranged in the angle adjuster 1), namely the angle adjuster unlocking end 11 has a trend of elastic rotation to a locking position. The limiting poking piece 12 is rotatably mounted on the base plate 14 through the torsion spring, when the limiting poking piece 12 is located at the locking position, the limiting poking piece 12 can interfere with the rotation of the rotating plate 2, so that the seat back can rotate by a certain angle and cannot be leveled, when the limiting poking piece 12 rotates to the unlocking position, the limiting poking piece 12 is used for yielding the rotating plate 2, and the rotating plate 2 can rotate by a larger angle relative to the base plate 14, so that the seat back can be leveled.
It should be noted that, the unlock positions of the recliner unlock end 11, the recliner unlock link 13, and the limit dial 12 refer to the respective current positions when the rotating plate 2 is able to rotate freely relative to the base plate 14 (the seat back can be put flat), and the lock positions refer to the respective current positions when the rotating plate 2 is unable to rotate freely relative to the base plate 14.
Referring to fig. 6, the shaft portion 111 of the recliner unlocking tip 11 includes two arcuate segments 111a and two inner cut segments 111b, and the two arcuate segments 111a and the two inner cut segments 111b are disposed in a pair by pair. And, the maximum aperture of the inscribed section 111b is smaller than that of the arc-shaped section 111 a. Further, the inner section 111b is a planar structure to facilitate the design of the steering assembly.
Referring to fig. 1 to 4, the operating assembly includes an actuating linkage for driving the limiting dial 12 to rotate, an angle adjuster unlocking linkage 13 for driving the actuating linkage, and a driving linkage for driving the angle adjuster unlocking linkage 13.
Referring to fig. 1, 3, 5, 7 and 8, the recliner unlocking link 13 has a functional hole 131, the functional hole 131 is located in the middle of the recliner unlocking link 13, the shaft 111 of the recliner unlocking head 11 is embedded in the functional hole 131, and the wall of the functional hole 131 has at least one interference point, and the distance between the interference point and the center point of the functional hole 131 is smaller than the maximum radius of the shaft 111.
When the angle adjuster unlocking connecting rod 13 rotates from the locking position to the unlocking position, the angle adjuster unlocking end head 11 and the limiting poking piece 12 can both rotate from the locking position to the unlocking position, and the seat back can rotate within a larger angle range until the seat back is placed flat; when the angle adjuster unlocking end 11 rotates from the locking position to the unlocking position, the angle adjuster unlocking connecting rod 13 and the limiting poking piece 12 are both positioned at the locking position, the seat backrest can only rotate a certain angle, and when the angle adjuster unlocking end rotates to a limited maximum angle, the seat slide rail can be unlocked through the cooperation of other mechanisms, so that the automobile seat can move forwards and backwards.
Specifically, the functional hole 131 includes two arc segments 131a and two protruding segments 131b that are disposed in two opposite directions, the maximum aperture of the protruding segments 131b is smaller than the aperture of the arc segment 131a, each protruding segment 131b has at least one interference point, and the length of the arc segment 111a is smaller than that of the arc segment 131a, and since the length of the arc segment 111a is smaller than that of the arc segment 131a, the shaft 111 of the recliner unlocking tip 11 can rotate in the functional hole 131 of the recliner unlocking link 13 at a certain angle to idle, i.e. the recliner unlocking tip 11 rotates without driving the recliner unlocking link 13 to rotate. Referring to fig. 8, when the recliner unlocking head 11 rotates clockwise from the locked position to the unlocked position, the recliner unlocking link 13 is not driven to rotate. Referring to fig. 7, due to the protruding section 131b, when the recliner unlocking link 13 rotates clockwise from the locked position to the unlocked position, the recliner unlocking end 11 can be driven to rotate clockwise from the locked position to the unlocked position.
Further, in order to make the outer peripheral surface of the shaft portion 11 of the unlocking end 11 of the angle adjuster and the inner wall of the functional hole 131 of the unlocking connecting rod 13 of the angle adjuster better in fitting degree, the following design is made, namely, the matching of the outer peripheral surface and the inner wall is more stable and reliable, and abnormal sound can be prevented: the curvature of the arc section 111a is equal to that of the arc section 131a, the protruding section 131b is of a V-shaped plane structure which is matched with the inner cutting section 111b, so that the functional hole 131 of the angle adjuster unlocking connecting rod 13 is of a butterfly-shaped structure, two planes of the whole protruding section 131b which are in a V shape are interference surfaces which are matched with the inner cutting section 111b, and when the shaft part 11 is abutted with the functional hole 131, the two inner cutting sections 111b of the shaft part 11 are respectively in surface contact with one protruding section 131b, the reliability is good, the abrasion is small, and the service life is long.
Referring to fig. 1 and 3, the driving linkage includes an unlocking rocker 17 and a middle connecting rod i 18, one end of the middle connecting rod i 18 is hinged to one end of the recliner unlocking connecting rod 13 away from the middle connecting rod ii 15, the other end is hinged to one end of the unlocking rocker 17, and the middle part of the unlocking rocker 17 is rotatably mounted on the base plate 14.
Referring to fig. 1 to 4, the actuating linkage includes an actuating link 16 and an intermediate link ii 15, the middle of the actuating link 16 is rotatably mounted on the base plate 14, one end of the actuating link 16 is used for driving the limiting dial 12 to rotate, the other end is hinged to one end of the intermediate link ii 15, and the other end of the intermediate link ii 15 is hinged to one end of the recliner unlocking link 13.
Referring to fig. 1 and fig. 3, the unlocking rocker 17 is lifted upwards (rotated anticlockwise), the unlocking rocker 17 pulls the intermediate link i 18 downwards, the intermediate link i 18 drives the recliner unlocking link 13 to rotate clockwise to unlock the recliner 2, so that the angle of the seat back is adjustable, meanwhile, the recliner unlocking link 13 pulls the intermediate link ii 15 upwards, referring to fig. 2 and fig. 4, at this time, the intermediate link ii 15 drives the actuating link 16 to rotate anticlockwise, and finally the limiting pulling piece 12 rotates anticlockwise under the action of the torsion spring, and the limiting pulling piece 12 is bent over the rotating plate 2, so that the seat back can rotate to a larger extent until the seat back is flat.
Referring to fig. 1 to 4, the unlocking rocker 17, the intermediate link i 18, the recliner unlocking link 13 and the intermediate link ii 15 are located on one side surface of the base plate 14, and the supporting and limiting dial 12 and the actuating link 16 are located on the other side surface of the base plate 14. The design can greatly reduce the whole volume, so that the whole structure is more compact, and the device can be installed in a narrow space.
Further, referring to fig. 2 to 4, the base plate 14 has a guiding and limiting hole 141, the intermediate link ii 15 and the actuating link 16 are hinged by a pin 19, and the pin 19 passes through the guiding and limiting hole 141 to limit the whole operating assembly and the locking assembly.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.