Automobile back row seat backrest angle manual adjusting device and automobile back row seat thereof

Abstract

The invention discloses an automobile rear-row seat backrest angle manual adjusting device and an automobile rear-row seat thereof, and belongs to the technical field of vehicles. Comprising a vehicle body fixing base plate which is fixed with a vehicle body in a use state; the backrest angle locking and unlocking mechanism is arranged on the vehicle body fixing base plate; the locking and unlocking control mechanism is hinged to the backrest angle locking and unlocking mechanism; the latch hook piece is connected with the backrest angle locking and unlocking mechanism and is simultaneously connected with the backrest of the back row seat of the automobile; the backrest angle locking and unlocking mechanism is characterized in that base plate latch column holes are formed in the vehicle body fixing base plate at intervals, and the backrest angle locking and unlocking mechanism is arranged on the vehicle body fixing base plate in a left-right moving mode and is locked with the vehicle body fixing base plate in a latch mode or unlocked from the vehicle body fixing base plate at the position corresponding to the base plate latch column holes under the action of the locking and unlocking control mechanism. The device has the advantages that locking is reliable, and comfort and safety of a passenger are guaranteed; no noise is generated in the process of adjusting the angle of the backrest of the back row seat of the automobile, and the adjustment is light and labor-saving.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles, and in particular relates to a manual adjustment device for a backrest angle of a rear seat of an automobile, and also relates to a rear seat of an automobile. Background Art

[0002] With the development of the automobile industry, people's requirements for automobiles are constantly expanding in depth and breadth. The angle adjustment function of the rear seat backrest (also called "chair back", the same below) of the car is created to meet people's needs. If the backrest angle is too steep and cannot be adjusted, the passenger will feel discomfort in the back and will have waist pain if sitting for a long time.

[0003] There are two main types of rear seat backrest angle adjustment devices: manual and electric. As for the former, i.e. the manual type, due to the use of mechanical structure, the production cost is relatively low, the price is relatively cheap, and the maintenance cost is low, because the manual adjustment device has a simple structure and is not easy to damage, and due to the simple structure, manual adjustment is usually more reliable and less likely to cause troublesome failures. However, the only drawback is that the manual adjustment device needs to be operated manually, which is not as convenient and fast as the electric adjustment operation. In addition, the appearance is relatively inferior, and it seems to lack a sense of technology and fashion; as for the latter, i.e. the electric type, the advantages are convenient and fast adjustment, strong sense of technology, and relatively high comfort. However, the shortcomings are that the maintenance cost in manufacturing and use is high. If a failure occurs, the maintenance is relatively troublesome and complicated, and the reliability is low, because the complex structure has a relatively powerful appearance and function, but the probability of failure is high. Based on the above, and considering people's actual use desires, weighing the pros and cons from a rational perspective, the overall advantages of the manual adjustment device are significantly greater than those of the electric adjustment device.

[0004] In the disclosed Chinese patent documents, technical information of various structures of rear seat backrest angle adjustment devices for automobiles can be found, such as CN216610960U recommends "a rear seat backrest angle adjustment mechanism", CN211401214U provides "a rear seat backrest angle adjustment structure for automobiles", CN218519564U discloses "a rear seat backrest angle adjustment mechanism" and CN205059321U introduces "a rear seat backrest angle adjustment mechanism for automobiles". The aforementioned patents, which are not limited to the examples, all use a toothed plate-type angle adjuster to achieve backrest angle adjustment. Since the disadvantages of this structural form have been pointed out in the background technology column 0005 of the specification of the patent "a backrest angle adjustment mechanism and vehicle track for rear seats of vehicles" announced by CN211765085U, the applicant will not repeat them here. However, the aforementioned CN211765085U adopts an electric structure (see paragraphs 0044 to 0054 of its specification for details), and thus has the corresponding shortcomings mentioned by the applicant above.

[0005] The "manual multi-position adjustment and locking device for the backrest of the rear seat of a motor vehicle" disclosed by CN212047012U adopts a manual adjustment structure. Although the patent can objectively realize the technical effects summarized in paragraph 0013 of its specification, the patent still has the following deficiencies that need to be remedied: Since the component for adjusting the backrest angle connected to the backrest through a hook member adopts a rack (called a tooth plate in the patent) structure, it can be seen from the description of the adjustment process in its specification that in the process of adjusting the backrest angle, that is, under manual operation, the metal wedge is driven to rotate an angle by a metal wire as a traction rope, so that the metal wedge is disengaged (released) from the teeth on the rack (called a "tooth plate" in the patent). After the backrest is adjusted to the desired angle, the metal wire as the traction rope is loosened to restore the metal wedge to mesh with the rack. Therefore, it is difficult to ensure the reliability of the engagement between the only toothed flange of the metal wedge and the rack. When the vehicle encounters impact situations such as bumps and sudden braking during driving, there is a risk of abnormal disengagement between the metal wedge and the rack, affecting the safety of the passengers; since the process of adjusting the backrest is a process in which the hook and the rack slide relative to the base frame (the patent calls it a "support plate") statically fixed to the vehicle body, the metal wedge will rub against the wall of the rack cavity, causing damage to both the metal wedge and the rack, and it is inevitable that a rattling noise will be emitted during the adjustment process; as mentioned above, due to the use of a rack, it is very easy to break the teeth when encountering situations such as vehicle bumps and sudden braking mentioned above, resulting in the entire adjustment device being in name only. Summary of the invention

[0006] The primary task of the present invention is to provide a manual adjustment device for the angle of the rear seat backrest of a vehicle, which helps to change the design mode of the rack into a latching or unlatching structural form, thereby fully ensuring that the backrest is locked at the adjusted angle position and will not fail to lock due to situations such as severe bumps and sudden braking of the vehicle.

[0007] Another object of the present invention is to provide a manual adjustment device for the angle of the rear seat backrest of a vehicle, which is advantageous in converting the meshing pair in the prior art into a sliding pair so as to avoid generating noise during the adjustment process.

[0008] Another task of the present invention is to provide a rear seat for a vehicle, which can fully embody the technical effect of the manual adjustment device for the backrest angle of the rear seat for the vehicle.

[0009] In order to embody the primary task of the present invention, the technical solution provided by the present invention is: a manual adjustment device for the backrest angle of a rear seat of an automobile, comprising a vehicle body fixed base plate, which is fixed to the vehicle body when in use; a backrest angle locking and unlocking mechanism, which is arranged on the vehicle body fixed base plate; a locking and unlocking control mechanism for driving the backrest angle locking and unlocking mechanism to lock or unlock the vehicle body fixed base plate, which locking and unlocking control mechanism is hinged on the backrest angle locking and unlocking mechanism; a lock hook, which is fixedly connected to the backrest angle locking and unlocking mechanism and is also fixedly connected to the backrest of the rear seat of the automobile when in use; characterized in that: base plate latch post holes are opened in an interval state on the vehicle body fixed base plate, the backrest angle locking and unlocking mechanism is arranged on the vehicle body fixed base plate in a movably left-right manner and is latched or unlocked with the vehicle body fixed base plate at a position corresponding to the base plate latch post holes under the action of the locking and unlocking control mechanism.

[0010] In a specific embodiment of the present invention, the left end of the vehicle body fixing base plate is folded and expanded to form a left fixing arm of the vehicle body fixing base plate, and the right end is also folded and expanded to form a right fixing arm of the vehicle body fixing base plate. The left and right fixing arms of the vehicle body fixing base plate are fixed to the vehicle body when in use, and the base plate latch hole is arranged in a spaced-apart state in the area in the length direction of the vehicle body fixing base plate between the left and right fixing arms of the vehicle body fixing base plate; the backrest angle locking and unlocking mechanism together with the locking and unlocking control mechanism and the lock hook member are arranged in a left-right movable manner in the area in the length direction of the vehicle body fixing base plate between the left and right fixing arms of the vehicle body fixing base plate.

[0011] In another specific embodiment of the present invention, the backrest angle locking and unlocking mechanism includes a guide slide plate, a latch post lock plate, a cover shell, a group of latch posts and a group of latch post return springs, the guide slide plate is located at the rear side of the vehicle body fixed base plate and is movably matched with the rear side surface, upper side surface and lower side surface of the vehicle body fixed base plate in a left-right manner, the latch post lock plate is located at the front side of the vehicle body fixed base plate and is movably matched with the front side surface of the vehicle body fixed base plate in a left-right manner, and is movably matched with the front side surface of the vehicle body fixed base plate in a left-right manner. A group of latch post clearance holes equal to the number of the group of latch posts are provided on the latch post lock plate and at positions corresponding to the positions of the substrate latch post holes. The cover shell corresponds to the front side of the latch post lock plate, and a cover shell cavity is formed at the lower part of the height direction of the cover shell and towards one side of the latch post lock plate, and a group of latch post supporting holes equal to the number of the group of latch posts are provided at intervals at positions corresponding to the cover shell cavity, the group of latch post supporting holes correspond to the group of latch post clearance holes, and the rear ends of a group of latch posts are movably placed on the upper part of the locking and unlocking control mechanism and passed through the group of latch post clearance holes. The positioning hole extends to the rear side of the latch column lock plate and probes into or exits the latch column hole of the base plate, and the front end of a group of latch columns is supported on the group of latch column supporting holes, and a group of latch column reset springs are respectively sleeved on the front end of a group of latch columns, and the rear end of the group of latch column reset springs is supported on the front side of a latch column support step ring with a diameter larger than that of a group of latch columns formed on a group of latch columns, and the front end of a group of latch column reset springs is supported on the cavity wall of the cover cavity, wherein the upper end of the cover cavity is passed through the latch column opening in sequence through a pair of upper fasteners. The upper end of the column lock plate is fixed to the upper end of the guide slide plate together with the upper end of the latch column lock plate through the fastener holes on the latch column lock plate and the fastener holes on the guide slide plate opened at the upper end of the guide slide plate, while the lower end of the cover shell is fixed to the lower end of the guide slide plate together with the lower end of the lock column lock plate through a pair of lower fasteners after sequentially passing through the lower fastener holes on the latch column lock plate opened at the lower end of the latch column lock plate and the lower fastener holes on the guide slide plate opened at the lower end of the guide slide plate; the locking and unlocking control mechanism is hinged on the cover shell; the lock hook is fixedly connected to the latch column lock plate.

[0012] In another specific embodiment of the present invention, a lock hook member end fixing hole is provided on the latch post lock plate and at positions corresponding to the left and right sides of the group of latch post clearance holes, the lock hook member is composed of a lock hook member first end and a lock hook member second end, the lock hook member first end is fixed to the lock hook member end fixing hole at a position corresponding to the left side of the group of latch post clearance holes, and the lock hook member second end is fixed to the lock hook member end fixing hole at a position corresponding to the right side of the group of latch post clearance holes, and the front end of the lock hook member is composed of a backrest connecting hook head, which is fixedly connected to the backrest of the rear seat of the vehicle in a state of use.

[0013] In another specific embodiment of the present invention, a pair of torsion spring shaft support seats that correspond to each other and are spaced apart from each other extend downward from the lower end of the cover shell, and the locking and unlocking control mechanism is hinged at the lower end of the cover shell at a position corresponding to between the pair of torsion spring shaft support seats.

[0014] In another specific embodiment of the present invention, the locking and unlocking control mechanism includes a torsion spring shaft, a lock buckle and a torsion spring, and a pair of torsion spring shaft supports corresponding to each other on the left and right sides are formed on the front side of the middle part of the lock buckle. The pair of torsion spring shaft supports correspond to between the pair of torsion spring shaft support seats, and a torsion spring shaft support hole is provided on the pair of torsion spring shaft supports and at mutually corresponding positions. A group of latch column sliding support concave cavities equal in number to the group of latch columns and corresponding in position are formed in an interval state at the upper end of the lock buckle, and the rear ends of the group of latch columns are supported on the group of latch column sliding support concave cavities for forward and backward movement, and the latch column support step ring corresponds to the front side of the group of latch column sliding support concave cavities, and the torsion spring shaft is inserted into the pair of torsion spring shaft support seats and the pair of torsion spring shaft supports at the positions corresponding to the torsion spring shaft support seat holes and the torsion spring shaft support holes provided on the pair of torsion spring shaft support seats, and is screwed on The limiting nut at the right end of the torsion spring shaft is limited, the torsion spring is sleeved in the middle of the torsion spring shaft and is located between a pair of torsion spring shaft supports, the first torsion spring foot of the torsion spring is abutted against the middle of the lock buckle at a position corresponding to the upper side of a torsion spring shaft support located on the left side of the pair of torsion spring shaft supports, and the second torsion spring foot of the torsion spring is abutted against the lock buckle at a position corresponding to the lower side of the middle of the torsion spring shaft, and the lower end of the lock buckle is constituted as a cable wire rope traction plate, and a cable wire rope core wire end fixing head limiting cavity is constituted on the cable wire rope traction plate. In use state, the cable wire rope core wire end fixing head at one end of the cable wire rope core wire movably located in the outer sleeve is limited in the position of the cable wire rope core wire end fixing head limiting cavity on the cable wire rope traction plate, and the other end of the cable wire rope core wire is connected to the cable wire rope core wire plate hand arranged on the front front edge of the seat, the side of the seat, the upper part of the chair back corresponding to the bottom of the chair back pillow or the back of the chair back.

[0015] In a more specific embodiment of the present invention, a cable wire rope core wire outer sleeve positioning sleeve limiting plate is extended downward at the lower end of the guide slide plate and at a position corresponding to the cable wire rope traction plate, and an outer sleeve positioning sleeve cavity is provided on the cable wire rope core wire outer sleeve positioning sleeve limiting plate and at a position corresponding to the limiting cavity of the fixed head at the end of the cable wire rope core wire. In use state, the position of the cable wire rope core wire outer sleeve positioning sleeve of the cable wire rope core wire in the outer sleeve positioning sleeve cavity is limited on the cable wire rope core wire outer sleeve positioning sleeve limiting plate.

[0016] In a further specific embodiment of the present invention, a buffer and vibration damping sleeve is provided on each of the group of latch posts and at a position corresponding to the rear side of the latch post support step ring, the rear side surface of the buffer and vibration damping sleeve corresponds to the front side surface of the group of latch post sliding support concave cavities, and the surrounding edge portions of the front side surface of the buffer and vibration damping sleeve form a stack edge, which wraps around the side surface in the circumferential direction of the latch post support step ring; the number of the group of latch posts, the group of latch post reset springs, the group of latch post yield holes and the group of latch post support holes are two to five respectively.

[0017] In order to embody the completion of another task of the present invention, the technical solution provided by the present invention is: a guide slide plate sliding cavity is formed in the middle part in the height direction of the guide slide plate, front guide sliding ribs protruding from the front side surface of the vehicle body fixed base plate are formed at the upper and lower parts of the front side of the vehicle body fixed base plate and at intervals along the length direction of the vehicle body fixed base plate, and rear guide sliding ribs protruding from the rear side surface of the vehicle body fixed base plate are formed at the upper and lower parts of the rear side of the vehicle body fixed base plate and also at intervals along the length direction of the vehicle body fixed base plate, the guide slide plate sliding cavity and the upper and lower surfaces of the vehicle body fixed base plate and the rear guide sliding ribs form a sliding pair, and the rear side surface of the latch column lock plate and the front guide sliding ribs form a sliding pair.

[0018] Another task of the present invention is to provide a technical solution of a rear seat of a car, provided with a manual adjustment device for the angle of the rear seat backrest of the car.

[0019] The technical effect of the technical solution provided by the present invention is that: since the substrate latch post holes are arranged in a spaced state in the length direction of the vehicle body fixed substrate, and since the locking and unlocking control mechanism acts on the backrest angle locking and unlocking mechanism, the backrest angle locking and unlocking mechanism arranged on the vehicle body fixed substrate and movably arranged on the vehicle body fixed substrate can lock the rear seat backrest of the vehicle at an adjusted angle position at a position corresponding to the substrate latch post hole, and when the backrest angle locking and unlocking mechanism exits the substrate latch post hole and releases the adjustable state of the latch lock with the vehicle body fixed substrate, the angle of the rear seat backrest of the vehicle can be adjusted as needed, thereby changing the existing technology of using a rack to cooperate or release the rack to cooperate. The combination is a structural form that utilizes the latching or unlatching of the latch post and the latch post hole of the base plate, so it has an excellent locking reliability effect, and will not be abnormally unlocked due to severe bumps and emergency braking caused by special road conditions and special circumstances encountered by the vehicle during driving, so the comfort and safety of the passengers can be fully guaranteed; because the front and rear guide slides are respectively formed on the front and rear sides of the vehicle body fixed base plate, and because the rear side of the latch post lock plate of the structural system of the backrest angle locking and unlocking mechanism and the guide slide plate sliding cavity of the guide slide plate form sliding pairs with the front and rear guide slides respectively, no noise will be generated during the process of adjusting the angle of the rear seat backrest of the car, and the adjustment is light and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of the present invention; Figure 2 For the present invention Figure 1 Exploded view of the three-dimensional assembly structure; Figure 3 for Figure 1 and Figure 2 The detailed structural diagram of the vehicle body fixed base plate shown; Figure 4 It is a schematic diagram of a first state in which the backrest angle locking and unlocking mechanism of the present invention is locked with a vehicle body fixed base plate; Figure 5 It is a schematic diagram of a second state in which the backrest angle locking and unlocking mechanism of the present invention is locked with a vehicle body fixed base plate. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical essence and beneficial effects of the present invention, it will be described in detail in the form of embodiments below. However, the description of the embodiments is not a limitation of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0022] In the following description, all concepts related to directionality or orientation such as up, down, left, right, front, back, inside and outside are based on the current Figure 1 The position state is taken as a reference, and thus it cannot be understood as a special limitation on the technical solution provided by the present invention.

[0023] See also Figure 1 and Figure 2 The specific structure of the manual adjustment device for the backrest angle of a rear seat of an automobile provided by the present invention is as follows: a vehicle body fixed base plate 1 is shown, and the vehicle body fixed base plate 1 is fixed to the vehicle body when in use; a backrest angle locking and unlocking mechanism 2 is shown, and the backrest angle locking and unlocking mechanism 2 is arranged on the vehicle body fixed base plate 1; a locking and unlocking control mechanism 3 (also referred to as "locking and unlocking operating mechanism", the same below) for driving the aforementioned backrest angle locking and unlocking mechanism 2 to lock or unlock the aforementioned vehicle body fixed base plate 1 is shown, and the locking and unlocking control mechanism 3 is hinged on the aforementioned backrest angle locking and unlocking mechanism 2; a lock hook member 4 is shown, and the lock hook member 4 is fixedly connected to the aforementioned backrest angle locking and unlocking mechanism 2 and is also fixedly connected to the backrest of the rear seat of the automobile when in use.

[0024] The technical key points of the technical solution provided by the present invention are as follows: substrate latch post holes 11 are provided at intervals on the aforementioned vehicle body fixing substrate 1, i.e., in the length direction of the vehicle body fixing substrate 1; the aforementioned backrest angle locking and unlocking mechanism 2 is arranged on the vehicle body fixing substrate 1 to move left and right, i.e., to slide left and right, and is acted upon by the aforementioned locking and unlocking control mechanism 3 to latch or unlatch the vehicle body fixing substrate 1 at a position corresponding to the aforementioned substrate latch post hole 11.

[0025] In the above, the applicant mentioned that the vehicle body fixing base plate 1 is fixed to the vehicle body. The approximate position of the vehicle body referred to here is at a position corresponding to the C-pillar position of a car such as a sedan. The C-pillar is a pillar on both sides of the rear windshield of the car, located at the rear of the car body. The function of the C-pillar is to support the roof and the rear windshield. It is an important part of the car structure and helps to maintain the overall stability and strength of the car body. The C-pillar can bear a certain amount of collision energy and protect the safety of the rear passengers. The C-pillar plays a role in making the overall lines of the car body more smooth and beautiful in vehicle design. Since the more specific content of the vehicle body fixing base plate 1 described in the present invention being fixed to the vehicle body in the use state can also be referred to the description and drawings of the Chinese patent authorization announcement No. CN211765085U mentioned by the applicant in the background technology column above, and the above-mentioned lock hook member 4 is also fixedly connected to the backrest of the rear seat of the car in the use state, which can also be referred to CN211765085U, the applicant will not explain this in detail below.

[0026] The left end of the aforementioned vehicle body fixing base plate 1 is folded and bent to form a left fixing arm 12 of the vehicle body fixing base plate, and the right end is also folded and bent to form a right fixing arm 13 of the vehicle body fixing base plate. The aforementioned left and right fixing arms 12, 13 of the aforementioned vehicle body fixing base plate are fixed to the aforementioned vehicle body in the use state, and the aforementioned base plate latch hole 11 is arranged in a spaced state in the longitudinal direction of the aforementioned vehicle body fixing base plate 1 between the left and right fixing arms 12, 13 of the vehicle body fixing base plate; the aforementioned backrest angle locking and unlocking mechanism 2 together with the aforementioned locking and unlocking control mechanism 3 and the lock hook member 4 are arranged in a longitudinal direction of the vehicle body fixing base plate 1 between the left and right fixing arms 12, 13 of the vehicle body fixing base plate so as to be movable left and right.

[0027] See also Figure 3 And combined with Figure 1 and Figure 2 ,Depend on Figures 1 to 3As shown, at both ends of the aforementioned vehicle body fixing base plate 1, i.e., the left end and the right end, a vehicle body fixing base plate hole 16 is respectively provided, at the end of the left fixing arm 12 of the vehicle body fixing base plate a left fixing arm fixing hole 121 is provided, and at the end of the right fixing arm 13 of the vehicle body fixing base plate a right fixing arm fixing hole 131 is provided. In the use state, the entire vehicle body fixing base plate 1 is fixed to the vehicle body located at the C-pillar position of the vehicle as described above by corresponding fasteners such as screws or bolts passing through the aforementioned vehicle body fixing base plate hole 16, the left fixing arm fixing hole 121 and the right fixing arm fixing hole 131.

[0028] See you next time Figure 1 to Figure 2The aforementioned backrest angle locking and unlocking mechanism 2 includes a guide slide 21, a latch post lock plate 22, a cover 23, a group of latch posts 24 and a group of latch post return springs 25. The guide slide 21 is located at the rear side of the aforementioned vehicle body fixed base plate 1 and slides with the rear side, upper side and lower side of the vehicle body fixed base plate 1 in a left-right manner. The latch post lock plate 22 is located at the front side of the vehicle body fixed base plate 1 and slides with the front side of the vehicle body fixed base plate 1 in a left-right manner. A group of latch posts equal in number to the aforementioned group of latch posts 24 are provided on the latch post lock plate 22 and at positions corresponding to the aforementioned substrate latch post holes 11. The cover 23 corresponds to the front side of the latch post lock plate 22, and a cover cavity 231 is formed at the lower part of the height direction of the cover 23 and on the side facing the latch post lock plate 22. A group of latch post support holes 232, which are equal to the number of the aforementioned group of latch posts 24, are arranged at intervals at the position corresponding to the cover cavity 231. The group of latch post support holes 232 corresponds to the aforementioned group of latch post clearance holes 221. The rear ends of a group of latch posts 24 are movably placed on, that is, supported on, the upper part of the aforementioned locking and unlocking control mechanism 3 and extend to the aforementioned latch post lock plate through the aforementioned group of latch post clearance holes 221. 22 and penetrate into or withdraw from the aforementioned substrate latch post hole 11, and the front end of a group of latch posts 24 is supported on the aforementioned group of latch post support holes 232, and a group of latch post return springs 25 are respectively sleeved on the front ends of a group of latch posts 24, and the rear ends of the group of latch post return springs 25 are supported on the front side of a latch post support step ring 241 with a diameter larger than that of a group of latch posts 24 formed on a group of latch posts 24, and the front ends of the group of latch post return springs 25 are supported on the cavity wall of the aforementioned housing cavity 231, wherein the upper end of the aforementioned housing 23 is passed through the upper end of the latch post lock plate 22 in sequence through a pair of upper fasteners 233. The fastener holes 222 on the latch post lock plate and the fastener holes 211 on the guide slide plate opened at the upper end of the guide slide plate 21 are fixed together with the upper end of the latch post lock plate 22 and the upper end of the guide slide plate 21, and the lower end of the cover shell 23 is fixed together with the lower end of the lock post lock plate 22 and the lower end of the guide slide plate 21 through a pair of lower fasteners 234 that pass through the latch post lock plate lower fastener holes 223 opened at the lower end of the latch post lock plate 22 and the guide slide plate lower fastener holes 212 opened at the lower end of the guide slide plate 21 in sequence; the aforementioned locking and unlocking control mechanism 3 is hinged on the aforementioned cover shell 23; the aforementioned lock hook member 4 is fixedly connected to the aforementioned latch post lock plate 22. It should be noted that the timing when the rear ends of the aforementioned group of latch posts 24 move forward and backward and rest on the upper part of the aforementioned locking and unlocking control mechanism 3 is within the time period when the group of latch posts 24 withdraws from or latches into the substrate latch post holes 11, because when the locking and unlocking control mechanism 3 leaves the contact with the group of latch posts 24, the aforementioned situation of moving forward and backward and resting on the locking and unlocking control mechanism 3 does not exist temporarily.

[0029] In this embodiment, the upper and lower fasteners 233 and 234 mentioned above are rivets. Specifically, a pair of upper rivets and a pair of lower rivets are used to rivet the cover 23, the latch post lock plate 22 and the guide plate 21 into a whole. Figures 1 to 3 As shown, the aforementioned substrate latch post hole 11 in the present embodiment is a rectangular hole, but it does not mean that it must be a rectangular hole. For example, it can also be an elliptical hole. The width of the substrate latch post hole spacing strip 111 between each two adjacent substrate latch post holes 11 is equal to the width of the spacing part between each two adjacent latch post clearance holes in a group of latch post clearance holes 221 and is also equal to the width of the spacing part between each two adjacent latch post support holes in a group of latch post support holes 232.

[0030] Please see the key Figure 1 A lock hook end fixing hole 224 is respectively provided on the aforementioned latch post lock plate 22 and at positions corresponding to the left and right sides of the aforementioned group of latch post clearance holes 221. The aforementioned lock hook member 4 is composed of a lock hook first end 41 and a lock hook second end 42. The lock hook first end 41 is fixed to the aforementioned lock hook end fixing hole 224 at a position corresponding to the left side of the group of latch post clearance holes 221, and the lock hook second end 42 is fixed to the aforementioned lock hook end fixing hole 224 at a position corresponding to the right side of the group of latch post clearance holes 221. The front end of the lock hook member 4 is composed of a backrest connecting hook head 43. When in use, the backrest connecting hook head 43 is fixedly connected to the aforementioned rear seat backrest of the vehicle (mentioned above).

[0031] As a preferred solution, a first end positioning step ring 411 is formed at the position of the first end 41 of the aforementioned lock hook, and a second end positioning step ring 421 is formed at the position of the second end 42 of the aforementioned lock hook. In return, a recessed cavity 225 is formed on the aforementioned latch post lock plate 22 and at the position corresponding to the surrounding of the lock hook end fixing hole 224. The first and second end positioning step rings 411 and 421 are welded and fixed to the latch post lock plate 22 at the position in the recessed cavity 225. However, fasteners such as nuts can also be used to fix the first and second ends 41 and 42 of the aforementioned lock hook passing through the pair of lock hook end fixing holes 224 at the rear side of the latch post lock plate 22. In this case, threads are formed at the positions of the first and second ends 41 and 42 of the lock hook. It is also possible to fix the first and second ends 41 and 42 of the lock hook to the latch post lock plate 22 at the positions corresponding to the pair of lock hook end fixing holes 224 by riveting. In short, the present invention cannot be limited by any specific fixing method of the lock hook member 4 and the latch post lock plate 22 .

[0032] See you next time Figure 1A pair of torsion spring shaft support seats 235 corresponding to each other and spaced apart from each other extend downward from the lower end of the aforementioned cover shell 23, and the aforementioned locking and unlocking control mechanism 3 is hinged at the lower end of the cover shell 23 at a position corresponding to the pair of torsion spring shaft support seats 235.

[0033] The locking and unlocking control mechanism 3 comprises a torsion spring shaft 31, a lock catch 32 and a torsion spring 33. A pair of torsion spring shaft supports 321 corresponding to each other are formed on the front side of the middle part of the lock catch 32. The pair of torsion spring shaft supports 321 correspond to the pair of torsion spring shaft support seats 235. A torsion spring shaft support hole 3211 is provided on the pair of torsion spring shaft supports 321 and at corresponding positions. A group of latch column sliding supports equal in number to the group of latch columns 24 and corresponding in position are formed at the upper end of the lock catch 32 in an interval state. The rear end of the aforementioned group of latch posts 24 is supported on the group of latch post sliding support recessed cavity 322 in a forward and backward manner. The aforementioned latch post support step ring 241 corresponds to the front side of the aforementioned group of latch post sliding support recessed cavity 322. The torsion spring shaft 31 is inserted (i.e., "hinged") on the pair of torsion spring shaft support seats 235 and the pair of torsion spring shaft supports 321 at positions corresponding to the torsion spring shaft support seat holes 2351 opened on the pair of torsion spring shaft support seats 235 and the aforementioned torsion spring shaft support holes 3211, and is screwed on the torsion spring shaft 31 by a not shown figure. 1 is limited by a limiting nut, a retaining ring or a cotter pin or a pressure riveting method at the right end of the torsion spring shaft 31, and the torsion spring 33 is sleeved in the middle of the torsion spring shaft 31 and is located between a pair of torsion spring shaft supports 321. The first torsion spring foot 331 of the torsion spring 33 is abutted against the middle of the lock buckle 32 at a position corresponding to the upper side of the torsion spring shaft support 321 located on the left side of the pair of torsion spring shaft supports 321, and the second torsion spring foot 332 of the torsion spring 33 is abutted against the lock buckle 321 at a position corresponding to the lower side of the middle part of the torsion spring shaft 31. The lower end of the lock buckle 32 is configured as a cable wire rope traction plate 323. A cable wire rope core wire end fixing head limiting cavity 3231 is formed on the cable wire rope traction plate 323. When in use, the cable wire rope core wire end fixing head movably located in the outer sleeve, i.e., one end of the cable wire rope core wire located in the outer sleeve, is limited in position on the cable wire rope traction plate 323, while the other end of the cable wire rope core wire is connected to a cable wire rope core wire wrench arranged on the front front edge of the seat, the side of the seat, the upper part of the chair back corresponding to the bottom of the chair back pillow, or the back of the chair back.

[0034] At the lower end of the aforementioned guide slide plate 21 and extending downwardly at a position corresponding to the aforementioned cable wire rope traction plate 323, there is a cable wire rope core wire outer sleeve positioning sleeve limiting plate 213, and on the cable wire rope core wire outer sleeve positioning sleeve limiting plate 213 and at a position corresponding to the aforementioned cable wire rope core wire end fixed head limiting cavity 3231, an outer sleeve positioning sleeve cavity 2131 is provided. When in use, the position of the cable wire rope core wire outer sleeve positioning sleeve of the cable wire rope core wire is limited on the aforementioned cable wire rope core wire outer sleeve positioning sleeve limiting plate 213.

[0035] Since the overall structure of the cable wire core wire located in the outer sleeve is similar to the structure of the throttle cable of a motorcycle, the connection between the cable wire rope traction plate 323 and the cable wire rope core wire outer sleeve positioning sleeve limiting plate 213 is similar to the connection on a motorcycle, and the cable wire rope core wire can move in the outer sleeve positioning sleeve, the applicant combined Figure 1 A brief description is given below: Figure 1 The cable wire rope 5 is shown in the figure, and the cable wire rope 5 includes a cable wire rope core wire 51, and a cable wire rope core wire end fixing head 511 is fixed to the end of the cable wire rope core wire 51, and the cable wire rope core wire end fixing head 511 is limited to, i.e., positioned on, the aforementioned cable wire rope traction plate 323, and the cable wire rope core wire outer sleeve positioning sleeve 5121 on the cable wire rope core wire outer sleeve 512 of the cable wire rope core wire 51 is positioned on the aforementioned cable wire rope core wire outer sleeve positioning sleeve limiting plate 213. The other end of the cable wire rope core wire 51 is connected to the aforementioned wrench (i.e., the aforementioned cable wire rope core wire wrench, and the wrench can also be called a "clamping hand") set at the side of the seat or other reasonable positions.

[0036] A buffering and vibration-damping sleeve 242 is provided on the aforementioned group of latch posts 24 and at a position corresponding to the rear side of the aforementioned latch post support step ring 241. The rear side surface of the buffering and vibration-damping sleeve 242 corresponds to the front side surface of the aforementioned group of latch post sliding support concave cavity 322, and the peripheral edge of the front side surface of the buffering and vibration-damping sleeve 242 forms a stack edge, which wraps around the side surface of the latch post support step ring 241 in the circumferential direction. In this embodiment, after a non-limited number of simulation tests conducted by the applicant, it is shown that it is more reasonable to have three of the aforementioned group of latch posts 24, a group of latch post return springs 25, a group of latch post clearance holes 221 and a group of latch post support holes 232, but they can also be two, four or five, so the present invention cannot be limited by the number of the aforementioned components and related technical features. In other words, if the number of the aforementioned components and related technical features is increased or decreased in form for the purpose of circumventing the present invention, it is undoubtedly still within the scope of the technical connotation disclosed by the present invention.

[0037] Preferably, a guide slide plate sliding cavity 214 is formed in the middle of the height direction of the guide slide plate 21, and front guide slide ribs 14 protruding from the front side surface of the vehicle body fixed base plate 1 are formed at intervals at the front upper and lower parts of the vehicle body fixed base plate 1 and along the length direction of the vehicle body fixed base plate 1, and rear guide slide ribs 15 ( Figure 4 and Figure 5 As shown in FIG. 1 , the guide slide sliding cavity 214 and the upper and lower surfaces of the vehicle body fixed base plate 1 and the rear guide slide rib 15 form a sliding pair, and the rear side surface of the latch column lock plate 22 and the front guide slide rib 14 form a sliding pair. The sliding pair can effectively reduce friction and avoid generating annoying noise during the adjustment process.

[0038] The present invention also provides a rear seat for an automobile, which is provided with the aforementioned manual adjustment device for the angle of the rear seat backrest.

[0039] See also Figure 4 and Figure 5 And combined with Figure 1 to Figure 2 , Figure 4 The figure shows that the backrest angle locking and unlocking mechanism 2 is in the first state locked with the vehicle body fixed base plate 1. Specifically, two of a group of latch posts 24 (three in this embodiment) of the structural system of the backrest angle locking and unlocking mechanism 2 are in the state of being latched with the base plate latch post holes 11, and the middle latch post 24 of the three latch posts 24 is blocked by the spacing bar 111 between two adjacent base plate latch post holes 11, so the middle latch post does not play a locking role.

[0040] When we are in the Figure 4 The angle of the rear seat backrest of the automobile in the state shown is adjusted and a group of latch posts 24 of the structural system of the backrest angle locking and unlocking mechanism 2 of the present invention are in a state where Figure 5When the position is as shown, the specific adjustment process is as follows: the passenger uses his finger to pull the wrench (also called "clamp handle"). The Toyota Highlander car has the wrench set on the side of the seat as mentioned above, to drive the aforementioned cable wire rope core wire 51, and the cable wire rope core wire 51 drives the cable wire rope traction plate 323 at the lower end of the aforementioned lock buckle 32, so that the lock buckle 32 rotates around the torsion spring shaft 31 (such as clockwise) by an angle under the reaction force of the torsion spring 33, and the front side of the upper end of the lock buckle 32 acts on the buffer vibration damping sleeve 242, that is, the front side of the upper end of the lock buckle 32 acts on the latch column support step ring 241 through the buffer vibration damping sleeve 242, so that a group of latch columns 24 slide forward under the reaction force of a group of latch column reset springs 25. In the process of sliding forward, the latch column support step 241 compresses a group of reset springs 24 to store energy, and a group of latch columns 24, that is, when a group of Figure 4 After the latch post 24 shown in the figure moves forward and exits the aforementioned base latch post hole 11, the seat back of the rear seat of the automobile is released. Figure 4 The seat back is in the locked state shown in the figure. In this state, the seat passenger can adjust the angle of the seat back as needed, that is, the guide plate 21 and the latch post lock plate 22 slide along the length direction of the vehicle body fixed base plate 1 at the same time. When the seat back angle adjustment is completed, that is, it reaches the degree desired by the seat passenger, the aforementioned wrench or the buckle is immediately released. At this time, under the restoring force of a set of return springs 25, two of the three latch posts 24 are locked. Figure 2 In the position shown, the left and middle latches 24 are latched into the latch holes 11 of the substrate, while the right latch 24 abuts against the aforementioned spacer bar 111 and then acts as a latch. Figure 5 shown.

[0041] According to the adjustment method described above, the seat back angle can be adjusted forward or backward within the limit range, and the limit range referred to here depends on the length of the vehicle body fixing base plate 1 and the length and spacing of the base plate latch holes 11 thereon. It should be noted that the structure provided in this embodiment can fully meet the seat passenger's requirements for adjusting the backrest angle.

[0042] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A manual adjustment device for the backrest angle of a rear seat of an automobile, comprising a vehicle body fixing base plate (1), which is fixed to the vehicle body in a use state; a backrest angle locking and unlocking mechanism (2), which is arranged on the vehicle body fixing base plate (1); a locking and unlocking control mechanism (3) for driving the backrest angle locking and unlocking mechanism (2) to lock or unlock the vehicle body fixing base plate (1), the locking and unlocking control mechanism (3) being hinged on the backrest angle locking and unlocking mechanism (2); a locking hook (4), which is fixedly connected to the backrest angle locking and unlocking mechanism (2) and is also fixedly connected to the backrest of the rear seat of the automobile in a use state; characterized in that: Base plate latch holes (11) are provided at intervals on the vehicle body fixed base plate (1); the backrest angle locking and unlocking mechanism (2) is arranged on the vehicle body fixed base plate (1) so as to be movable left and right and is latched or unlocked with the vehicle body fixed base plate (1) at a position corresponding to the base plate latch holes (11) under the action of the locking and unlocking control mechanism (3).

2. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 1, characterized in that: The left end of the vehicle body fixing base plate (1) is folded to form a left fixing arm (12) of the vehicle body fixing base plate, and the right end is also folded to form a right fixing arm (13) of the vehicle body fixing base plate. The left and right fixing arms (12, 13) of the vehicle body fixing base plate are fixed to the vehicle body in a use state. The base plate latch hole (11) is arranged in a spaced state in the longitudinal direction of the vehicle body fixing base plate between the left and right fixing arms (12, 13) of the vehicle body fixing base plate; the backrest angle locking and unlocking mechanism (2) together with the locking and unlocking control mechanism (3) and the lock hook member (4) are arranged in a longitudinal direction of the vehicle body fixing base plate between the left and right fixing arms (12, 13) of the vehicle body fixing base plate so as to be movable left and right.

3. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 2, characterized in that: The backrest angle locking and unlocking mechanism (2) comprises a guide slide (21), a latch post lock plate (22), a cover (23), a group of latch posts (24) and a group of latch post return springs (25). The guide slide (21) is located at the rear side of the vehicle body fixed base plate (1) and is movably movably engaged with the rear side, upper side and lower side of the vehicle body fixed base plate (1) to the left and right. The latch post lock plate (22) is located at the front side of the vehicle body fixed base plate (1) and is movably movably engaged with the front side of the vehicle body fixed base plate (1) to the left and right. A group of latch posts having the same number as the group of latch posts (24) is provided on the latch post lock plate (22) and at positions corresponding to the latch post holes (11) of the base plate. The cover (23) corresponds to the front side of the latch post lock plate (22), and a cover cavity (231) is formed at the lower part of the cover (23) in the height direction and on the side facing the latch post lock plate (22). A group of latch post support holes (232) whose number is equal to that of the group of latch posts (24) are arranged at intervals at the position corresponding to the cover cavity (231). The group of latch post support holes (232) corresponds to the group of latch post clearance holes (221), and the rear ends of the group of latch posts (24) are movably placed on the upper part of the locking and unlocking control mechanism (3) and extend to the rear end of the latch post lock plate (22) through the group of latch post clearance holes (221). The latch post hole (11) of the base plate is inserted into or out of the latch post hole (11), and the front end of a group of latch posts (24) is supported on the group of latch post support holes (232). A group of latch post return springs (25) are respectively sleeved on the front end of a group of latch posts (24). The rear end of the group of latch post return springs (25) is supported on the front side of a latch post support step ring (241) formed on the group of latch posts (24) and having a diameter greater than the diameter of the group of latch posts (24). The front end of the group of latch post return springs (25) is supported on the cavity wall of the cover cavity (231), wherein the upper end of the cover cavity (23) is fastened to the latch post lock plate (22) through a pair of upper fasteners (233) in sequence. The locking and unlocking control mechanism (3) is hinged on the cover shell (23); and the lock hook (4) is fixedly connected to the latch column lock plate (22).

4. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 3, characterized in that: A locking hook end fixing hole (224) is provided on the latch post lock plate (22) at positions corresponding to the left and right sides of the group of latch post clearance holes (221). The locking hook (4) is composed of a locking hook first end (41) and a locking hook second end (42). The locking hook first end (41) is fixed to the locking hook end fixing hole (224) at a position corresponding to the left side of the group of latch post clearance holes (221), while the locking hook second end (42) is fixed to the locking hook end fixing hole (224) at a position corresponding to the right side of the group of latch post clearance holes (221). The front end of the locking hook (4) is composed of a backrest connecting hook head (43). In a use state, the backrest connecting hook head (43) is fixedly connected to the backrest of the rear seat of the vehicle.

5. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 3, characterized in that: A pair of torsion spring shaft support seats (235) corresponding to each other and spaced apart from each other extend downwardly from the lower end of the cover shell (23), and the locking and unlocking control mechanism (3) is hingedly arranged at the lower end of the cover shell (23) at a position corresponding to the pair of torsion spring shaft support seats (235).

6. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 5, characterized in that: The locking and unlocking control mechanism (3) comprises a torsion spring shaft (31), a lock buckle (32) and a torsion spring (33). A pair of torsion spring shaft supports (321) whose positions correspond to each other on the left and right are formed on the front side of the middle part of the lock buckle (32). The pair of torsion spring shaft supports (321) correspond to between the pair of torsion spring shaft support seats (235). A torsion spring shaft support hole (3211) is provided on the pair of torsion spring shaft supports (321) and at corresponding positions. The upper end of the lock buckle (32) is provided with a number of torsion spring shaft supports (3211) equal to the number of the group of latch pillars (24) and whose positions are equal to the number of the latch pillars (24) and are arranged at intervals. A corresponding group of latch post sliding support concave cavities (322), the rear ends of the group of latch posts (24) are supported on the group of latch post sliding support concave cavities (322) in a forward and backward manner, the latch post support step ring (241) corresponds to the front side of the group of latch post sliding support concave cavities (322), the torsion spring shaft (31) is inserted on the pair of torsion spring shaft support seats (235) and the pair of torsion spring shaft supports (321) at positions corresponding to the torsion spring shaft support seat holes (2351) opened on the pair of torsion spring shaft support seats (235) and the torsion spring shaft support holes (3211), and is composed of The limiting nut screwed on the right end of the torsion spring shaft (31) is limited, the torsion spring (33) is sleeved in the middle of the torsion spring shaft (31) and is located between a pair of torsion spring shaft supports (321), the first torsion spring foot (331) of the torsion spring (33) is abutted against the middle of the lock buckle (32) at a position corresponding to the upper side of a torsion spring shaft support located on the left side of the pair of torsion spring shaft supports (321), and the second torsion spring foot (332) of the torsion spring (33) is abutted against the lock buckle (321) at a position corresponding to the lower side of the middle of the torsion spring shaft (31), and the lower end of the lock buckle (32) is configured as a cable wire rope. A traction plate (323) is formed with a cable wire rope core wire end fixing head limiting cavity (3231) on the cable wire rope traction plate (323). When in use, the cable wire rope core wire end fixing head movably located at one end of the cable wire rope core wire in the outer sleeve is limited in position in the cable wire rope core wire end fixing head limiting cavity (3231) on the cable wire rope traction plate (323), while the other end of the cable wire rope core wire is connected to a cable wire rope core wire plate hand arranged on the front front edge of the seat, the side of the seat, the upper part of the chair back corresponding to the bottom of the chair back pillow, or the back of the chair back.

7. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 6, characterized in that: A cable wire rope core wire outer sleeve positioning sleeve limiting plate (213) is extended downwardly at the lower end of the guide slide plate (21) and at a position corresponding to the cable wire rope traction plate (323). An outer sleeve positioning sleeve cavity (2131) is provided on the cable wire rope core wire outer sleeve positioning sleeve limiting plate (213) and at a position corresponding to the cable wire rope core wire end fixed head limiting cavity (3231). When in use, the position of the cable wire rope core wire outer sleeve positioning sleeve of the cable wire rope core wire in the outer sleeve positioning sleeve cavity (2131) is limited on the cable wire rope core wire outer sleeve positioning sleeve limiting plate (213).

8. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 3, characterized in that: A buffer and vibration damping sleeve (242) is provided on each of the group of latch posts (24) and at a position corresponding to the rear side of the latch post support step ring (241); the rear side surface of the buffer and vibration damping sleeve (242) corresponds to the front side surface of the group of latch post sliding support concave cavities (322), and the peripheral edge of the front side surface of the buffer and vibration damping sleeve (242) forms a stack edge, which wraps around the side surface of the latch post support step ring (241) in the circumferential direction; the number of the group of latch posts (24), the group of latch post reset springs (25), the group of latch post clearance holes (221) and the group of latch post support holes (232) is two to five respectively.

9. The manual adjustment device for the angle of the rear seat backrest of a vehicle according to claim 3, characterized in that: A guide slide sliding cavity (214) is formed in the middle of the height direction of the guide slide (21); front guide sliding ribs (14) protruding from the front side surface of the vehicle body fixed base plate (1) are formed at intervals on the front upper and lower parts of the vehicle body fixed base plate (1) and along the length direction of the vehicle body fixed base plate (1); and rear guide sliding ribs (15) protruding from the rear side surface of the vehicle body fixed base plate (1) are formed at intervals on the rear upper and lower parts of the vehicle body fixed base plate (1) and also along the length direction of the vehicle body fixed base plate (1); the guide slide sliding cavity (214) and the upper and lower surfaces of the vehicle body fixed base plate (1) and the rear guide sliding ribs (15) form a sliding pair; the rear side surface of the latch column lock plate (22) and the front guide sliding ribs (14) form a sliding pair.

10. A rear seat for a car, characterized in that: A manual adjustment device for the angle of a rear seat backrest of an automobile as claimed in claim 1 is provided.

Images