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

Abstract

The utility model 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 utility model belongs to the technical field of vehicles, and in particular relates to a manual adjustment device for the 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 was created to meet people's needs. If the backrest angle is too steep and cannot be adjusted, the passenger will feel back discomfort and will experience waist pain if sitting for a long time.

[0003] There are two main types of rear seatback angle adjustment devices: manual and electric. The manual type, due to its mechanical structure, offers relatively low production costs, a relatively low price, and low maintenance. This is because the manual adjustment device is simple and less prone to damage. Furthermore, its simplicity makes manual adjustment more reliable and less prone to troublesome malfunctions. However, its only drawback is that manual adjustment requires manual operation, making it less convenient and quicker than electric adjustment. Furthermore, its aesthetics are somewhat inferior, lacking a sense of technology and style. The electric type, while advantageous in terms of ease and speed of adjustment, a strong sense of technology, and relatively high comfort, suffers from high manufacturing and maintenance costs. If a malfunction occurs, repair is complex and cumbersome, and reliability is low. While this complex structure offers a superior appearance and functionality, it carries a higher probability of failure. Based on the foregoing, and considering people's actual usage preferences, and particularly the principle of "you can't have your cake and eat it too," a rational weighing of the pros and cons suggests that manual adjustment devices have a significantly greater overall advantage than electric adjustment devices.

[0004] Technical information on various structures of automobile rear seat backrest angle adjustment devices can be found in the published Chinese patent documents, such as CN216610960U recommending "a rear seat backrest angle adjustment mechanism", CN211401214U providing "a car rear seat backrest angle adjustment structure", CN218519564U disclosing "a rear seat backrest angle adjustment mechanism" and CN205059321U introducing "a car rear seat backrest angle adjustment mechanism". 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 paragraph 0005 of the background technology column of the specification of the patent "A backrest angle adjustment mechanism and vehicle track for vehicle rear seats" announced by CN211765085U, the applicant will not elaborate on them. However, the aforementioned CN211765085U adopts an electric structure (for details, please refer to paragraphs 0044 to 0054 of its specification), and thus has the corresponding shortcomings mentioned by the applicant above.

[0005] The "manual multi-position adjustment and locking device for the backrest of a rear seat in a motor vehicle" disclosed by CN212047012U adopts a manual adjustment structure. Although this patent can objectively realize the technical effects summarized in paragraph 0013 of its specification, this patent still has the following deficiencies that need to be addressed: 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), according to the description of the adjustment process in its specification, it can be seen 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 serving 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 serving as the traction rope is released to restore the metal wedge to engagement with the rack. Therefore, it is difficult to guarantee 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 slides relative to the base frame (the patent calls it a "support plate") statically fixed to the vehicle body through the rack, the metal wedge will rub against the wall of the rack cavity, causing damage to both the metal wedge and the rack, and a rattling noise will inevitably be emitted during the adjustment process; as mentioned above, due to the use of a rack, it is very easy to cause tooth breakage when encountering situations such as vehicle bumps and sudden braking mentioned above, resulting in the entire adjustment device being in name only. Utility Model Content

[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 is conducive to the design mode of the variable 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 task of the present invention is to provide a manual adjustment device for the angle of the rear seat backrest of an automobile, which is conducive to changing 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 car, which can fully reflect the technical effect of the manual adjustment device for the backrest angle of the rear seat of the car.

[0009] In order to embody the primary task of completing 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, the locking and unlocking control mechanism being hinged on the backrest angle locking and unlocking mechanism; a lock hook member, which is fixedly connected to the backrest angle locking and unlocking mechanism and is simultaneously fixedly connected to the backrest of the automobile when in use; the characteristic is that: base plate latch post holes are opened in a spaced state on the vehicle body fixed base plate, the backrest angle locking and unlocking mechanism is movably arranged on the vehicle body fixed base plate left and right 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 to form a left fixing arm of the vehicle body fixing base plate, and the right end is also folded 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 opened in a spaced-apart state in the longitudinal 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 the longitudinal direction of the vehicle body fixing base plate between the left and right fixing arms of the vehicle body fixing base plate so as to be movable left and right.

[0011] In another specific embodiment of the present invention, the backrest angle locking and unlocking mechanism includes a guide slide, a latch post lock plate, a cover, a group of latch posts and a group of latch post return springs, the guide slide being located at the rear side of the vehicle body fixed base plate and slidingly cooperating with the rear side, upper side and lower side of the vehicle body fixed base plate so as to move left and right, the latch post lock plate being located at the front side of the vehicle body fixed base plate and slidingly cooperating with the front side of the vehicle body fixed base plate so as to move left and right, a group of latch post clearance holes being equal in number to the group of latch posts being provided at intervals on the latch post lock plate and at positions corresponding to the latch post holes of the base plate, the cover corresponding to the front side of the latch post lock plate, a cover cavity being formed at a lower part of the cover in the height direction and facing one side of the latch post lock plate, a group of latch post support holes being equal in number to the group of latch posts being provided at intervals at positions corresponding to the cover cavity, the group of latch post support holes being corresponding to the group of latch post clearance holes, the rear ends of the group of latch posts being resting on the upper part of the locking and unlocking control mechanism and passing through the group of latch posts so as to move forward and backward. The clearance hole extends to the rear side of the latch post lock plate and probes into or exits the latch post hole of the base plate, and the front end of a group of latch posts is supported on the group of latch post support holes, and a group of latch post return springs are respectively sleeved on the front end of a group of latch posts, and the rear end of the group of latch post return springs is supported on the front side of a latch post support step ring with a diameter larger than that of a group of latch posts formed on a group of latch posts, and the front end of a group of latch post return springs is supported on the cavity wall of the cover cavity, wherein the upper end of the cover cavity is sequentially passed through the openings in the upper end through a pair of upper fasteners. The upper end of the latch post lock plate is fixed to the upper end of the guide slide after passing through the latch post lock plate fastener hole on the latch post lock plate and the guide slide upper fastener hole opened at the upper end of the guide slide, and the lower end of the cover shell is fixed to the lower end of the latch post lock plate and the guide slide lower fastener hole opened at the lower end of the latch post lock plate through a pair of lower fasteners; the locking and unlocking control mechanism is hinged on the cover shell; the lock hook is fixedly connected to the latch post lock plate.

[0012] In another specific embodiment of the present invention, a lock hook end fixing hole is provided on the latch post lock plate and at positions on the left and right sides corresponding to 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, 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 car in 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 the position 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 catch 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 of the lock catch. 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 corresponding positions. A group of latch post sliding support concave cavities equal in number to the group of latch posts and corresponding in position are formed at the upper end of the lock catch in an interval state, and the rear ends of the group of latch posts are supported on the group of latch post sliding support concave cavities for forward and backward movement, and the latch post support step ring corresponds to the front side of the group of latch post 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 opened on the pair of torsion spring shaft support seats, and is rotated by 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 formed on the cable wire rope traction plate. In use, the cable wire rope core wire end fixing head of 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 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 seat back corresponding to the bottom of the seat back pillow or the back of the seat 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 opened on the cable wire rope core wire outer sleeve positioning sleeve limiting plate and at a position corresponding to the cable wire rope core wire end fixed head limiting cavity. 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 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 buffering 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 buffering and vibration-damping sleeve corresponds to the front side surface of the group of latch post sliding support cavities, and the edges of the front side surface of the buffering 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 reflect the completion of another task of the utility model, the technical solution provided by the utility model is: a guide slide sliding cavity is formed in the middle part of the height direction of the guide slide, and 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 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: a rear seat of a car is 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 utility model is that: since the base plate latch post holes are provided at intervals in the length direction of the vehicle body fixed base plate, 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 base plate can be moved left and right to lock the rear seat backrest of the vehicle at the adjusted angle position at the position corresponding to the base plate latch post hole, and when the backrest angle locking and unlocking mechanism exits the base plate latch post hole and releases the adjustable state of the latch lock with the vehicle body fixed base plate, 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 with or release the rack. 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 during driving, so the comfort and safety of the passengers are 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 This is a structural diagram of an embodiment of the present utility model;

[0021] Figure 2 For this utility model Figure 1 Exploded view of the three-dimensional assembly structure;

[0022] Figure 3 for Figure 1 and Figure 2 The detailed structural diagram of the vehicle body fixed base plate shown;

[0023] Figure 4 This is a schematic diagram of the backrest angle locking and unlocking mechanism of the present invention in a first state locked with a vehicle body fixed base plate;

[0024] Figure 5 This is a schematic diagram of the backrest angle locking and unlocking mechanism of the present invention in a second state locked with the vehicle body fixed base plate. DETAILED DESCRIPTION

[0025] In order to more clearly understand the technical essence and beneficial effects of the present invention, a detailed description will be given below in the form of embodiments. However, the description of the embodiments does not limit the scheme of the present invention. Any equivalent transformation that is merely formal and not substantial based on the concept of the present invention should be regarded as within the scope of the technical solution of the present invention.

[0026] 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 used as a reference, and therefore it cannot be understood as a special limitation on the technical solution provided by the present utility model.

[0027] See 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 utility model is as follows: a vehicle body fixed base plate 1 is shown, which is fixed to the vehicle body when in use; a backrest angle locking and unlocking mechanism 2 is shown, which is arranged on the vehicle body fixed base plate 1; a locking and unlocking control mechanism 3 (also called "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, which 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.

[0028] The technical key points of the technical solution provided by the present invention are as follows: substrate latch holes 11 are provided on the aforementioned vehicle body fixed base plate 1, i.e., in a spaced-apart state in the length direction of the vehicle body fixed base plate 1; the aforementioned backrest angle locking and unlocking mechanism 2 is arranged on the vehicle body fixed base plate 1 so as to move left and right, i.e., slide left and right, and is latched or unlocked with the vehicle body fixed base plate 1 at a position corresponding to the aforementioned substrate latch hole 11 by the aforementioned locking and unlocking control mechanism 3.

[0029] Applicant mentioned above that the vehicle body fixing base plate 1 is fixed to the vehicle body. The vehicle body referred to here generally corresponds to the C-pillar position of an automobile, such as a sedan. The C-pillar is a pillar located on either side of the rear windshield, located at the rear of the vehicle body. It supports the roof and rear windshield, and is a crucial component of the vehicle's structure, helping to maintain the overall stability and strength of the vehicle body. The C-pillar can absorb a certain amount of collision energy, protecting rear passengers. In vehicle design, the C-pillar plays a role in enhancing the overall lines of the vehicle body and creating a more streamlined and aesthetically pleasing appearance. Since the details of how the vehicle body fixing base plate 1 described in this utility model is fixed to the vehicle body during use can be found in the description and drawings of Chinese Patent Publication No. CN211765085U mentioned above in the Background Technology section, and the aforementioned locking hook member 4 is also fixedly connected to the rear seat backrest of the vehicle during use, as can be found in CN211765085U, Applicant will not elaborate on this further below.

[0030] 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 similarly folded and bent to form a right fixing arm 13 of the vehicle body fixing base plate. The left and right fixing arms 12, 13 of the aforementioned vehicle body fixing base plate are fixed to the aforementioned vehicle body when in use, and the aforementioned base plate latch hole 11 is provided in an interval state in the longitudinal direction area of ​​the aforementioned vehicle body fixing base plate 1 located 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 movably arranged in the longitudinal direction area of ​​the vehicle body fixing base plate located between the left and right fixing arms 12, 13 of the vehicle body fixing base plate.

[0031] See Figure 3 And combined Figure 1 and Figure 2 ,Depend on Figures 1 to 3As shown, the vehicle body fixing base plate 1 has a vehicle body fixing base plate hole 16 at each of its left and right ends. A left fixing arm fixing hole 121 is defined at the end of the left fixing arm 12 of the vehicle body fixing base plate, and a right fixing arm fixing hole 131 is defined at the end of the right fixing arm 13 of the vehicle body fixing base plate. In use, corresponding fasteners such as screws or bolts are passed through the vehicle body fixing base plate holes 16, the left fixing arm fixing hole 121, and the right fixing arm fixing hole 131 to secure the entire vehicle body fixing base plate 1 to the vehicle body at the C-pillar region described above.

[0032] See you next time Figures 1 to 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 on the rear side of the aforementioned vehicle body fixed base plate 1 and moves left and right to slide with the rear side, upper side and lower side of the vehicle body fixed base plate 1. The latch post lock plate 22 is located on the front side of the vehicle body fixed base plate 1 and moves left and right to slide with the front side of the vehicle body fixed base plate 1. On the latch post lock plate 22 and at the position corresponding to the aforementioned base plate latch post hole 11, a group of latch posts equal in number to the aforementioned group of latch posts 24 are provided. The cover 23 corresponds to the front side of the latch post lock plate 22. 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, the same number as the aforementioned group of latch posts 24, are spaced apart 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 the group of latch posts 24 are placed 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 hole 11, and the front ends of a group of latch posts 24 are 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 sides of the latch post support step rings 241 with a diameter larger than that of the group of latch posts 24, which are formed on the 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 cover cavity 231, wherein the upper end of the aforementioned cover 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 23 is fixed together with the lower end of the latch post lock plate 22 and the lower end of the guide slide plate 21 through a pair of lower fasteners 234. The locking and unlocking control mechanism 3 is hinged on the cover 23. The lock hook 4 is fixed to the latch post lock plate 22. It should be noted that the timing for the rear ends of the aforementioned set of latch posts 24 to move back and forth and rest on the upper part of the aforementioned locking and unlocking control mechanism 3 is during the time period when the set of latch posts 24 withdraws from or latches into the base plate latch post holes 11, because when the locking and unlocking control mechanism 3 leaves contact with the set of latch posts 24, the aforementioned situation of moving back and forth and resting on the locking and unlocking control mechanism 3 does not exist temporarily.

[0033] 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 plate 22 and the guide plate 21 into a whole. Figures 1 to 3 As shown, the aforementioned substrate latch post hole 11 in this 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.

[0034] Please see the key Figure 1 , a lock hook end fixing hole 224 is formed on the aforementioned latch post lock plate 22 and at positions on the left and right sides corresponding to 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).

[0035] As a preferred embodiment, a first end positioning step ring 411 is formed at the first end 41 of the hook member, and a second end positioning step ring 421 is formed at the second end 42 of the hook member. In addition, a recessed cavity 225 is formed on the latch post lock plate 22 at locations corresponding to the hook member end fixing holes 224. The first and second end positioning step rings 411 and 421 are welded to the latch post lock plate 22 within the recessed cavity 225. However, fasteners such as nuts can also be used to secure the first and second end 41 and 42 of the hook member, which pass through the pair of hook member end fixing holes 224, to the rear side of the latch post lock plate 22. In this case, threads are formed at the first and second end 41 and 42 of the hook member. Alternatively, the first and second end 41 and 42 of the hook member can be secured to the latch post lock plate 22 at locations corresponding to the pair of hook member end fixing holes 224 using press 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 .

[0036] 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.

[0037] The locking and unlocking control mechanism 3 includes 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 on the left and right sides 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 mentioned above. A torsion spring shaft support hole 3211 is provided on the pair of torsion spring shaft supports 321 and at corresponding positions. A set of latch post sliding supports equal in number to the set of latch posts 24 mentioned above and corresponding in position are formed at the upper end of the lock catch 32 in an interval state. The rear ends of the aforementioned group of latch posts 24 are supported on the group of latch post sliding support recesses 322 for forward and backward movement. The aforementioned latch post support step ring 241 corresponds to the front side of the aforementioned group of latch post sliding support recesses 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 hole 3211, and is screwed on the torsion spring shaft by a screw not shown in the figure. The right end of the torsion spring 31 is limited by a limiting nut, a retaining ring or a cotter pin or a pressure riveting method. The torsion spring 33 is sleeved on the middle part 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 part of the lock buckle 32 at a position corresponding to the upper part 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 32 at a position corresponding to the lower part of the middle part of the torsion spring shaft 31. The lower end of the lock buckle 32 is constituted 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, which is movably located in the outer sleeve, that is, 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, and the other end of the cable wire rope core wire is connected to the 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.

[0038] 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. 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 aforementioned cable wire rope core wire outer sleeve positioning sleeve limiting plate 213.

[0039] Since the overall structure of the cable wire rope 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. The cable wire rope 5 includes a cable core 51. A cable core end fixing head 511 is fixed to the end of the cable core 51. The cable core end fixing head 511 is defined, i.e., positioned, on the aforementioned cable traction plate 323. A cable core outer sleeve locating sleeve 5121 on the cable core outer sleeve 512 of the cable core 51 is positioned on the aforementioned cable core outer sleeve locating sleeve limiting plate 213. The other end of the cable core 51 is connected to the aforementioned wrench (i.e., the aforementioned cable core wrench, also known as a "clamp") provided on the side of the chair seat or other suitable location.

[0040] A buffer and vibration damping sleeve 242 is provided on each of the aforementioned latch posts 24 at a position corresponding to the rear side of the aforementioned latch post support step ring 241. The rear side of the buffer and vibration damping sleeve 242 corresponds to the front side surface of the aforementioned latch post sliding support cavity 322. The edges of the front side of the buffer and vibration damping sleeve 242 form a stacking edge that wraps around the circumferential side of the latch post support step ring 241. In this embodiment, the applicant's non-limited number of simulation tests have shown that three each of the aforementioned latch posts 24, latch post return springs 25, latch post clearance holes 221, and latch post support holes 232 is a reasonable number. However, two, four, or five each may also be provided. Therefore, the number of the aforementioned components and related technical features cannot limit the present invention. In other words, if the number of the aforementioned components and related technical features is increased or decreased in form to circumvent the purpose of the present invention, it will undoubtedly still fall within the technical scope disclosed in the present invention.

[0041] Preferably, a guide slide sliding cavity 214 is formed in the middle of the height direction of the guide slide plate 21, and 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. Figure 4 and Figure 5 (As shown in the figure), the guide slide sliding cavity 214 forms a sliding pair with the upper and lower surfaces of the vehicle body fixed base plate 1 and the rear guide rib 15. The rear side surface of the latch post lock plate 22 forms a sliding pair with the front guide rib 14. The sliding pair effectively reduces friction and avoids unpleasant noise during adjustment.

[0042] The utility model 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.

[0043] See Figure 4 and Figure 5 And combined Figures 1 to 2 , Figure 4 The diagram shows the backrest angle locking and unlocking mechanism 2 in a 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 a state of being latched with the base plate latch post holes 11, while the middle latch post 24 of the three latch posts 24 is abutted against the spacer bar 111 between two adjacent base plate latch post holes 11, and thus the middle latch post does not play a locking role.

[0044] When you are in a situation where Figure 4 The angle of the rear seat backrest of the car in the state shown is adjusted and a set of latch posts 24 of the structural system of the backrest angle locking and unlocking mechanism 2 of the utility model is in the state of being adjusted. Figure 5When the position is shown, the specific adjustment process is as follows: the passenger uses his finger to pull the wrench (also called "handle"; Toyota Highlander has the wrench set on the side of the seat) mentioned above, to drive the aforementioned cable wire rope core 51, and the cable wire rope core 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 while overcoming 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 while overcoming the reaction force of a group of latch column return springs 25. During the forward sliding process, the latch column support step 241 compresses the group of return springs 24 to store energy. Figure 4 After the latch 24 moves forward and exits the latch hole 11 of the substrate, the backrest of the rear seat of the car is released. Figure 4 In the locked state shown, the passenger can adjust the seat back angle as needed, that is, the guide slide 21 and the latch post lock plate 22 slide simultaneously along the length direction of the vehicle body fixed base plate 1. When the seat back angle adjustment is completed, that is, the passenger reaches the desired degree, the aforementioned wrench or 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 latches together. Figure 5 shown.

[0045] According to the adjustment method described above, the seat back angle can be adjusted forward or backward within a certain range. This range is determined by the length of the vehicle body fixing base plate 1 and the length and spacing of the base plate latch holes 11 therein. It should be noted that the structure provided by this embodiment fully meets the seat occupant's requirements for backrest angle adjustment.

[0046] In summary, the technical solution provided by the present utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects described 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), the vehicle body fixing base plate (1) being fixed to the vehicle body in a use state; a backrest angle locking and unlocking mechanism (2), the backrest angle locking and unlocking mechanism (2) being 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 to the backrest angle locking and unlocking mechanism (2); a locking hook (4), the locking hook (4) being fixedly connected to the backrest angle locking and unlocking mechanism (2) and simultaneously fixedly connected to the backrest of the rear seat of the automobile in a use state; and characterized in that: Baseboard latch holes (11) are provided on the vehicle body fixed baseboard (1) in an interval state. The backrest angle locking and unlocking mechanism (2) is arranged on the vehicle body fixed baseboard (1) so as to be movable left and right and is latched or unlocked with the vehicle body fixed baseboard (1) at a position corresponding to the baseboard latch holes (11) under the action of the locking and unlocking control mechanism (3).

2. The manual adjustment device for the rear seat backrest angle 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 opened 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 rear seat backrest angle 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 movable left and right to slide with the rear side, upper side and lower side of the vehicle body fixed base plate (1). The latch post lock plate (22) is located at the front side of the vehicle body fixed base plate (1) and is movable left and right to slide with the front side of the vehicle body fixed base plate (1). A group of latch posts, the number of which is equal to 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 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) with the same number as the group of latch posts (24) are spaced apart 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). The rear ends of the group of latch posts (24) are 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 of the first latch column and the second latch post of the second latch column are respectively mounted on the first latch column support holes (232), and the rear ends of the latch post return springs (25) ... The fastener hole (222) and the guide slide upper fastener hole (211) opened at the upper end of the guide slide (21) are fixed together with the upper end of the latch column lock plate (22) and the upper end of the guide slide (21); the lower end of the cover (23) is fixed together with the lower end of the lock column lock plate (22) and the lower end of the guide slide (21) through a pair of lower fasteners (234) that pass through the latch column lock plate lower fastener hole (223) opened at the lower end of the latch column lock plate (22) and the guide slide lower fastener hole (212) opened at the lower end of the guide slide (21); the locking and unlocking control mechanism (3) is hinged on the cover (23); the lock hook (4) is fixedly connected to the latch column lock plate (22).

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

5. The manual adjustment device for the rear seat backrest angle of a vehicle according to claim 3, characterized in that: A pair of torsion spring shaft support seats (235) corresponding to and spaced from each other extend downward 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 rear seat backrest angle of a vehicle according to claim 5, characterized in that: The locking and unlocking control mechanism (3) includes 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 on the left and right 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 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 catch (32) is provided with a number of torsion spring shaft supports (3211) equal to the number of the group of latch posts (24) and positioned at the same position. A corresponding set of latch post sliding support cavities (322), the rear ends of the set of latch posts (24) are supported on the set of latch post sliding support cavities (322) in a forward and backward manner, the latch post support step ring (241) corresponds to the front side of the set of latch post sliding support 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 seat holes (3211), and The torsion spring (33) is defined by a limiting nut screwed on the right end of the torsion spring shaft (31), and is sleeved on the middle part of the torsion spring shaft (31) and located between a pair of torsion spring shaft supports (321). The first torsion spring leg (331) of the torsion spring (33) is abutted against the middle part of the lock buckle (32) at a position corresponding to the upper part 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 leg (332) of the torsion spring (33) is abutted against the lock buckle (32) at a position corresponding to the lower part of the middle part of the torsion spring shaft (31). The lower end of the lock buckle (32) is constituted as a cable wire rope. The traction plate (323) is provided 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 at one end of the cable wire rope core wire movably located 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 the cable wire rope core wire plate hand arranged on the 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 rear seat backrest angle 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 downward 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). 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 rear seat backrest angle 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 edges of the front side surface of the buffer and vibration damping sleeve (242) form a stack edge, which is wrapped around the side surface of the circumferential direction of the latch post support step ring (241); the number of the group of latch posts (24), the group of latch post return springs (25), the group of latch post clearance holes (221) and the group of latch post support holes (232) is two to five.

9. The manual adjustment device for the rear seat backrest angle 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 plate (21), and 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, and 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 by: A manual adjustment device for the angle of a rear seat backrest of an automobile as claimed in claim 1 is provided.

Images