Manual-automatic integrated automobile seat angle adjuster capable of prompting backward turning of chair back to limit degree

Abstract

The utility model discloses a manual-automatic integrated automobile seat angle adjuster capable of prompting that a seat back is backwards turned to the limit degree, and belongs to the technical field of automobile accessories. Comprising a chair seat connecting plate, a chair back connecting plate, an automatic angle adjuster and a manual chair back turnover mechanism, wherein the manual chair back turnover mechanism is arranged on the left side of the upper part of the chair back connecting plate, is locked or unlocked with the automatic angle adjuster and is used for turning the chair back backwards towards the direction deviating from the chair seat to a state for a passenger to lie down in a state of unlocking with the automatic angle adjuster; the chair is characterized by further comprising a manual feeling prompting mechanism which is used for providing a function of stopping continuous overturning for an operator when the operator overturns the chair back backwards to the degree that the chair back tends to be in a horizontal state through the chair back manual overturning mechanism so that a passenger can lie on the chair back. And the manual feeling prompting mechanism is arranged between the lower parts of the opposite sides of the chair seat connecting plate and the chair back connecting plate. The device has the advantages that the situation that the chair back is damaged due to violent excessive overturning caused by blindness is avoided, and it is ensured that the chair back can be normally used permanently according to needs.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle accessories, concretely relates to a hand-automatic integrated automobile seat angle adjuster which can prompt the backrest to be turned over to the limit. BACKGROUND

[0002] From the literal interpretation of the aforementioned hand-automatic integrated automobile seat angle adjuster, it can be known that its advantage is to combine two types of adjustment modes. Specifically, it has the following advantages: the convenience of electric adjustment and the reliability of manual mode are combined, the electric mode can quickly and accurately adjust the backrest angle (especially suitable for multi-position fine adjustment), which improves the riding comfort and is suitable for daily use or frequent adjustment scenarios; the reliability of the manual mode is good, for example, emergency operation can be implemented when power failure or fault occurs, when the vehicle is powered off, the electric system fails such as motor damage or circuit problem, the manual mechanical structure can be used as a backup to ensure that the seat can still be adjusted, such as laying or folding the backrest for rescue or temporary rest in some specific situations; the mechanical components of the structure system of the manual operation such as the transmission components are not easily affected by the aging of the electronic system, and the long-term stability is higher; in terms of cost and maintenance advantages, compared with the pure electric angle adjuster, the hand-automatic integrated design can reduce the use frequency of the motor, for example, the motor can adjust the reasonable small angle range of the backrest forward and backward, and the manual control can make the backrest turn over a large angle, for example, until the backrest is turned over to the state where the occupant can lie down, so that the cost can be saved, and the maintenance cost of the manual control adjustment part when a fault occurs is relatively low; the application scenarios are flexible, the manual mechanism structure is more suitable for large torque operations such as laying the backrest to the completely flat state to lie down, avoiding the risk of motor overload; the manual operation is not affected by electromagnetic interference and can guarantee the reliability of the function, and the like.

[0003] Technical information of hand self-operated type automobile seat angle adjuster can be seen in disclosed Chinese patent documents, and typically, the hand self-operated type vehicle seat angle adjuster recommended in the authorized announcement No. CN221315882U can embody the advantages mentioned above, but still has the following defects: according to the description of the last third paragraph in the specification, since the backrest has been laid down to the extent that the occupant can lie down, but it is difficult or even impossible to avoid the occurrence of the backrest over-tilting situation due to the lack of a grasping reference for perception and / or judgment. If the backrest over-tilts, for example, significantly lower than the horizontal level of the seat at one end of the seat, mechanical structure damage, permanent deformation, related hinged components damage, hand adjustment function failure, and even damage to the automatic adjustment components, such as difficulty in resetting and abnormal noise loosening, etc. may occur. In theory, during the process of manually tilting the backrest backward, the operator stops as soon as he feels the force, thereby preventing forced operation by force, but the strength of the feeling of force varies from person to person, that is, different people have different feelings about the force situation, and the problem is the lack of reasonable technical support. In view of the foregoing factors, it is necessary to improve, and the technical solution to be introduced below is generated in this background. Practical new type content

[0004] The task of the present utility model is to provide a hand self-operated type automobile seat angle adjuster that can prompt the backrest to be tilted backward to the limit, which helps the operator to feel a signal by hand feeling when the operator manually tilts the backrest backward to the extent that the occupant can lie down, so as to avoid damage to the backrest caused by violent tilting.

[0005] The task of the present utility model is to provide a hand self-operated type automobile seat angle adjuster that can prompt the backrest to be tilted backward to the limit, which helps the operator to feel a signal by hand feeling when the operator manually tilts the backrest backward to the extent that the occupant can lie down, so as to avoid damage to the backrest caused by violent tilting.

[0006] In one specific embodiment of the utility model, a chair seat connecting plate automatic angle adjuster cooperation hole is opened on the chair seat connecting plate and at the upper part of the chair seat connecting plate, a transmission disc shaft head pivot cooperation hole is opened at the lower part of the chair back connecting plate and at the position corresponding to the chair seat connecting plate automatic angle adjuster cooperation hole, and the automatic angle adjuster has a movable gear disc.

[0007] In another specific embodiment of the utility model, the chair back manual turnover mechanism comprises a shaft connecting plate, an unlocking rotating shaft, a rotating shaft plate, a transmission transition plate, a locking and unlocking plate, an unlocking rotating shaft return spring and a transmission disc, the shaft connecting plate is located at the upper left side of the chair back connecting plate, the left end of the unlocking rotating shaft is rotatably supported on the shaft connecting plate, and the right end is rotatably supported on the upper part of the chair back connecting plate, one end of the rotating shaft plate towards the unlocking rotating shaft is fixed with the unlocking rotating shaft, the upper end of the transmission transition plate is hinged to the end of the rotating shaft plate away from the unlocking rotating shaft through a transmission transition plate upper hinge shaft, the lower end of the transmission transition plate is hinged to the right end of the locking and unlocking plate through a transmission transition plate lower hinge shaft, and a transmission transition plate foot stopper extends from the right end face of the transmission transition plate, the transmission transition plate foot stopper abuts against the left side of the chair back fixing plate, the locking and unlocking plate is fixed in the middle part of a locking and unlocking plate shaft, both ends of the locking and unlocking plate shaft are rotatably supported between the shaft connecting plate and the chair back connecting plate, the unlocking rotating shaft return spring is sleeved on the unlocking rotating shaft, the first spring leg of the unlocking rotating shaft return spring is positioned on the unlocking rotating shaft, the second spring leg of the unlocking rotating shaft return spring abuts against the left end of the chair back fixing plate, the transmission disc is matched with the movable gear disc at the position corresponding to the right side of the automatic angle adjuster, an automatic angle adjuster driving shaft through hole is formed in the center position of the transmission disc, a transmission disc pivot support shaft head is arranged in the circumferential direction of the automatic angle adjuster driving shaft through hole and at the right side of the transmission disc, the transmission disc pivot support shaft head is rotatably supported in the transmission disc shaft head pivot cooperation hole and extends to the right side of the chair back connecting plate, and a transmission disc forward and reverse rotation limit degree limiting stopper is fixed at the right side of the chair seat connecting plate and at the position corresponding to the lower part of the transmission disc in a state perpendicular to the chair seat connecting plate.

[0008] In still another embodiment of the present application, a transmission transition plate foot abutting pin is fixed to the left side of the backrest connecting plate and at a position corresponding to the transmission transition plate foot, and a spring foot positioning pin is fixed to the left side of the backrest connecting plate and at a position corresponding to the second spring foot. The transmission transition plate foot abuts against the rear side of the transmission transition plate foot abutting pin, and the second spring foot abuts against the front side of the spring foot positioning pin.

[0009] In still another embodiment of the present application, a transmission transition plate foot abutting pin is fixed to the left side of the backrest connecting plate and at a position corresponding to the transmission transition plate foot, and a spring foot positioning pin is fixed to the left side of the backrest connecting plate and at a position corresponding to the second spring foot. The transmission transition plate foot abuts against the rear side of the transmission transition plate foot abutting pin, and the second spring foot abuts against the front side of the spring foot positioning pin.

[0010] In still another specific embodiment of the utility model, a first dynamic tooth disc protrusion and a second dynamic tooth disc protrusion are formed on the right side of the dynamic tooth disc, the first and second dynamic tooth disc protrusions are separated by 180 degrees from each other around the circumferential direction of the dynamic tooth disc, and the shapes of the first and second dynamic tooth disc protrusions are different or the same; a first dynamic tooth disc protrusion fitting hole is formed on the transmission disc and corresponds to the position of the first dynamic tooth disc protrusion, and a second dynamic tooth disc protrusion fitting hole is also formed on the transmission disc and corresponds to the position of the second dynamic tooth disc protrusion, the shapes of the first and second dynamic tooth disc protrusion fitting holes are the same as those of the first and second dynamic tooth disc protrusions respectively and are adapted in size, a transmission disc pivot support shaft head limiting snap spring disc groove is formed on the transmission disc pivot support shaft head and around the circumferential direction of the transmission disc pivot support shaft head, a transmission disc pivot support shaft head limiting snap spring disc is embedded in the transmission disc pivot support shaft head limiting snap spring disc groove, and the transmission disc pivot support shaft head limiting snap spring disc is located on the right side of the backrest connecting plate and corresponds to the transmission disc shaft head pivot fitting hole.

[0011] In still another specific embodiment of the utility model, a first dynamic tooth disc protrusion and a second dynamic tooth disc protrusion are formed on the right side of the dynamic tooth disc, the first and second dynamic tooth disc protrusions are separated by 180 degrees from each other around the circumferential direction of the dynamic tooth disc, and the shapes of the first and second dynamic tooth disc protrusions are different or the same; a first dynamic tooth disc protrusion fitting hole is formed on the transmission disc and corresponds to the position of the first dynamic tooth disc protrusion, and a second dynamic tooth disc protrusion fitting hole is also formed on the transmission disc and corresponds to the position of the second dynamic tooth disc protrusion, the shapes of the first and second dynamic tooth disc protrusion fitting holes are the same as those of the first and second dynamic tooth disc protrusions respectively and are adapted in size, a transmission disc pivot support shaft head limiting snap spring disc groove is formed on the transmission disc pivot support shaft head and around the circumferential direction of the transmission disc pivot support shaft head, a transmission disc pivot support shaft head limiting snap spring disc is embedded in the transmission disc pivot support shaft head limiting snap spring disc groove, and the transmission disc pivot support shaft head limiting snap spring disc is located on the right side of the backrest connecting plate and corresponds to the transmission disc shaft head pivot fitting hole.

[0012] In further one specific embodiment of the utility model, a swing arm reset shaft up-down sliding hole is opened on the seat connecting plate and is located at the lower part of the seat connecting plate; the manual feeling prompting mechanism comprises a swing arm shaft, a swing arm, a swing arm reset spring and a roller, the left end of the swing arm shaft is fixed to the left lower part of the seat connecting plate, and the right end of the swing arm shaft is horizontally formed as a cantilever end, a swing arm reset shaft is fixed to the swing arm first end part, the swing arm reset shaft is inserted into the swing arm reset shaft up-down sliding hole and is in sliding cooperation with the swing arm reset shaft up-down sliding hole, a swing arm shaft cooperation hole is opened on the swing arm second end part, the swing arm shaft cooperation hole is pivotally connected to the right end of the swing arm shaft, a roller introduction recess is formed on the front side of the swing arm first end part, a roller rolling guide recess is formed on the upper side of the middle part of the swing arm, a hump is formed between the roller rolling guide recess and the roller introduction recess, the swing arm reset spring is sleeved on the middle part of the swing arm shaft at the position between the seat connecting plate and the left side of the swing arm first end part, the swing arm reset spring first foot is positioned on the swing arm shaft, the swing arm reset spring second foot is hooked on the left end of the swing arm reset shaft, the roller is rotatably arranged on the middle part of the roller shaft, the roller shaft is in rolling pair with the roller rolling guide recess, the hump and the roller introduction recess, the two ends of the roller shaft are fixed on the roller shaft fixing seat, and the roller shaft fixing seat is fixed to the left lower part of the back connecting plate.

[0013] In further one specific embodiment of the utility model, the shapes of the roller introduction recess and the roller rolling guide recess are both C-shaped, and when the back connecting plate is turned backward by the operator to drive the roller to displace along the roller rolling guide recess of the swing arm and when the roller passes the hump and instantaneously enters the roller introduction recess, the operator can obtain the unusual feeling that the back is turned backward to the limit.

[0014] In further one specific embodiment of the utility model, the seat connecting plate fixing hole for fixing the seat of the automobile seat is opened on the seat connecting plate, and the seat connecting plate fixing wing plate is further formed; the back connecting plate is fixed to the frame of the back of the automobile seat by welding, riveting or fasteners in the use state.

[0015] The technical effect of the technical scheme provided by the utility model is that because the manual feeling prompting mechanism is additionally arranged between the lower parts of the opposite sides of the seat connecting plate and the back connecting plate, when the operator turns the back backward to the extent of lying by using the back turning mechanism, the manual feeling prompting mechanism can provide the hand feeling signal of stopping turning for the operator, so that the damage of the back caused by blind and violent over-turning can be avoided, and the normal use of the back as required can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Embodiment structure diagram of the present application;

[0017] Figure 2 To Figure 1 Assembled right side view schematic diagram;

[0018] Figure 3 To Figure 2 Schematic diagram of the chair back connecting plate in the state shown can make the operator perceive when the chair back is turned to the limit degree. DETAILED DESCRIPTION

[0019] In order to make the technical essence and beneficial effects of the present application more clearly understood, the applicant will make a detailed description in the following embodiment, but the description of the embodiment is not a limitation on the technical scheme of the present application, and any equivalent transformation only in form but not in substance according to the technical concept of the present application should be regarded as the technical scheme of the present application.

[0020] In the following description, the directional or positional concepts of up, down, left, right, front and back are based on the position of the chair back connecting plate in the state shown in the drawings, and the position of the chair back connecting plate in the state shown in the drawings is the reference position. Figure 1 The current position state is taken as an example, so it cannot be understood as a special limitation on the technical scheme provided by the present application.

[0021] Please refer to Figure 1 , which shows a seat connecting plate 1 for connecting with the seat (i.e. seat framework) of the automobile seat in the use state, a chair back connecting plate 2 for connecting with the chair back (i.e. chair back framework) of the automobile seat in the use state, an automatic angle adjuster 3 arranged between the seat connecting plate and the chair back connecting plate 2 for making the aforementioned chair back connecting plate 2 together with the chair back incline forward or incline backward relative to the aforementioned seat, and a chair back manual turning mechanism 4 arranged at the upper left side of the chair back connecting plate 2 for locking or unlocking the aforementioned automatic angle adjuster 3 and in the state of unlocking the automatic angle adjuster 3 for turning the chair back backward to the direction away from the seat to the lying state of the occupant.

[0022] As the technical key point of the technical scheme provided by the present application: in the structure system of the aforementioned hand self-operated type automobile seat angle adjuster capable of prompting the chair back to turn to the limit degree, there is further provided a manual feeling prompting mechanism 5 for providing the operator with the manual feeling prompt of stopping the continuous turning when the operator turns the aforementioned chair back to the extent of the horizontal state for the occupant to lie down by using the aforementioned chair back manual turning mechanism 4, and the manual feeling prompting mechanism 5 is arranged between the lower part of the opposite side of the aforementioned seat connecting plate 1 and chair back connecting plate 2.

[0023] A chair seat connecting plate automatic angle adjuster cooperation hole 11 is opened on the aforementioned chair seat connecting plate 1 and at the upper part of the chair seat connecting plate 1. A transmission disc shaft head pivot cooperation hole 21 is opened at the lower part of the aforementioned chair back connecting plate 2 and at the position corresponding to the chair seat connecting plate automatic angle adjuster cooperation hole 11. The aforementioned automatic angle adjuster 3 has a movable gear disc 31. The aforementioned chair back manual overturning mechanism 4 is in cooperation with the right side of the aforementioned movable gear disc 31 and also in rotational cooperation with the aforementioned transmission disc shaft head pivot cooperation hole 21.

[0024] Since the structure of the automatic angle adjuster 3 mentioned in the present application is the same as the structure of the "a hand self combined type vehicle seat angle adjuster" disclosed in CN221315882U and proposed by the present applicant, the applicant will not repeat it below.

[0025] Continue to see Figure 1The aforementioned manual tilting mechanism 4 of the chair back comprises a shaft connecting plate 41, an unlocking shaft 42, a shaft plate 43, a transmission transition plate 44, a locking and unlocking plate 45, an unlocking shaft return spring 46 and a transmission disc 47. The shaft connecting plate 41 is located on the upper left side of the aforementioned chair back connecting plate 2. The left end of the unlocking shaft 42 is rotatably supported on the shaft connecting plate 41, and the right end is rotatably supported on the upper part of the aforementioned chair back connecting plate 2. The shaft plate 43 is fixed to one end of the unlocking shaft 42. The upper end of the transmission transition plate 44 (also referred to as "transition transmission plate" or "transition transmission arm", the same below) is hinged to the end of the aforementioned shaft plate 43 away from the unlocking shaft 42 through a transmission transition plate upper hinge shaft 441. The lower end of the transmission transition plate 44 is hinged to the right end of the locking and unlocking plate 45 through a transmission transition plate lower hinge shaft 442. A transmission transition plate foot stop 443 extends from the right end face of the transmission transition plate 44, which abuts against the left side of the aforementioned chair back fixing plate 2. The aforementioned locking and unlocking plate 45 is fixed to the middle part of a locking and unlocking plate shaft 451, and the two ends of the locking and unlocking plate shaft 451 are rotatably supported between the shaft connecting plate 41 and the chair back connecting plate 2. The unlocking shaft return spring 46 is sleeved on the unlocking shaft 42. The first spring leg 461 of the unlocking shaft return spring 46 is positioned on the unlocking shaft 42, and the second spring leg 462 abuts against the left end of the chair back fixing plate 2. The transmission disc 47 is matched with the aforementioned driving disc 31 at a position corresponding to the right side of the aforementioned automatic angle adjuster 3. An automatic angle adjuster driving shaft through hole 471 is formed in the center of the transmission disc 47. A transmission disc pivot support shaft head 472 is arranged on the right side of the transmission disc 47 and around the circumferential direction of the automatic angle adjuster driving shaft through hole 471. The transmission disc pivot support shaft head 472 is rotatably supported in the aforementioned transmission disc shaft head pivot cooperation hole 21 and extends to the right side of the aforementioned chair back connecting plate 2. A transmission disc forward and reverse rotation limit degree limiting plate 13 is fixed to the right side of the aforementioned seat connecting plate 1 and at a position corresponding to the lower part of the aforementioned transmission disc 47 in a state perpendicular to the seat connecting plate 1.

[0026] As a preferred solution, a plastic sleeve or other similar material sleeve is sleeved on the aforementioned transmission disc pivot support shaft head 472 and at a position corresponding to the transmission disc shaft head pivot cooperation hole 21.

[0027] On the right side edge portion of the aforementioned shaft connecting plate 41, a shaft connecting plate stack edge 411 shaped like an n is formed, and the right side of the shaft connecting plate 41 is formed into a shaft connecting plate cavity 412 by the shaft connecting plate stack edge 411. A left end pivotal support hole 413 for the aforementioned unlocking rotation shaft 42 is formed in the shaft connecting plate 41 and at a position corresponding to the left end of the aforementioned unlocking rotation shaft 42. A left pivotal support hole 414 for the aforementioned locking and unlocking plate shaft 451 is formed in the shaft connecting plate 41 and at a position corresponding to the left end of the aforementioned locking and unlocking plate shaft 451. An unlocking rotation shaft rotation support sleeve 22 is fixed to the aforementioned backrest connecting plate 2 and at a position corresponding to the right end of the aforementioned unlocking rotation shaft 42. A right pivotal support hole 23 for the aforementioned locking and unlocking plate shaft 451 is formed in the backrest connecting plate 2 and at a position corresponding to the right end of the aforementioned locking and unlocking plate shaft 451. The left end of the aforementioned unlocking rotation shaft 42 is pivotally supported by an unlocking rotation shaft bearing in the aforementioned left end pivotal support hole 413 for the unlocking rotation shaft 42. The right end of the unlocking rotation shaft 42 extends to the right side of the unlocking rotation shaft rotation support sleeve 22 from the unlocking rotation shaft rotation support sleeve hole 221 of the unlocking rotation shaft rotation support sleeve 22 and is formed into an unlocking rotation shaft operation handle mating spline head 421. An unlocking rotation shaft operation handle 4211 is matingly fitted to the unlocking rotation shaft operation handle mating spline head 421 in a spline mating manner. The left end of the aforementioned locking and unlocking plate shaft 451 is pivotally supported in the aforementioned left pivotal support hole 414 for the locking and unlocking plate shaft 451. The right end of the locking and unlocking plate shaft 451 is pivotally supported in the right pivotal support hole 23 for the locking and unlocking plate shaft 451.

[0028] Continued to see Figure 1 A transmission transition plate footstop abutting pin 24a is fixed to the left side of the aforementioned backrest connecting plate 2 and at a position corresponding to the aforementioned transmission transition plate footstop 443. A spring foot positioning pin 24b is fixed to the left side of the backrest connecting plate 2 and at a position corresponding to the aforementioned second spring foot 462. The aforementioned transmission transition plate footstop 443 abuts against the rear side of the transmission transition plate footstop abutting pin 24a. The aforementioned second spring foot 462 abuts against the front side of the spring foot positioning pin 24b.

[0029] A first cam disc protrusion 311 and a second cam disc protrusion 312 are formed on the right side surface of the cam disc 31, and are separated from each other by 180° around the circumferential direction of the cam disc 31. The shapes of the first and second cam disc protrusions 311 and 312 can be different or the same. In this embodiment, the shapes of the first and second cam disc protrusions 311 and 312 are the same. A first cam disc protrusion fitting hole 473 is formed in the transmission disc 47 at a position corresponding to the first cam disc protrusion 311, and a second cam disc protrusion fitting hole 474 is formed in the transmission disc 47 at a position corresponding to the second cam disc protrusion 312. The shapes and sizes of the first and second cam disc protrusion fitting holes 473 and 474 are the same as those of the first and second cam disc protrusions 311 and 312, respectively. A transmission disc pivot support shaft head 472 is formed on the transmission disc 47, and a transmission disc pivot support shaft head limiting snap spring disc groove 4721 is formed around the circumferential direction of the transmission disc pivot support shaft head 472. A transmission disc pivot support shaft head limiting snap spring disc 47211 is fitted in the transmission disc pivot support shaft head limiting snap spring disc groove 4721. The transmission disc pivot support shaft head limiting snap spring disc 47211 is located on the right side of the backrest connecting plate 2 at a position corresponding to the transmission disc pivot fitting hole 21.

[0030] The transmission disc pivot support shaft head limiting snap spring disc groove 4721 is located on the right side of the transmission disc pivot fitting hole 21, so that the transmission disc pivot support shaft head 472 is limited by the transmission disc pivot support shaft head limiting snap spring disc 47211 fitted in the transmission disc pivot support shaft head limiting snap spring disc groove 4721 at a position corresponding to the transmission disc pivot support shaft head limiting snap spring disc groove 4721.

[0031] The transmission disc pivot support shaft head limiting snap spring disc groove 4721 is located on the right side of the transmission disc pivot fitting hole 21, so that the transmission disc pivot support shaft head 472 is limited by the transmission disc pivot support shaft head limiting snap spring disc 47211 fitted in the transmission disc pivot support shaft head limiting snap spring disc groove 4721 at a position corresponding to the transmission disc pivot support shaft head limiting snap spring disc groove 4721. Figure 1As shown, a transmission disc locking / unlocking flange 475 extends on the aforementioned transmission disc 47 at a position corresponding to the aforementioned locking and unlocking plate 45, and a pair of transmission disc limiting feet 476 extend at intervals from each other at positions corresponding to the aforementioned transmission disc reversible rotation limit baffle 13, with the aforementioned transmission disc reversible rotation limit baffle 13 corresponding to the pair of transmission disc limiting feet 476; a transmission disc locking / unlocking flange engaging step notch 45 is formed on the aforementioned locking and unlocking plate 45 at a position corresponding to the transmission disc locking / unlocking flange 475. 2. When the transmission disc locking and unlocking flange engaging step notch 452 engages with the aforementioned transmission disc locking and unlocking flange 475, the aforementioned transmission disc 47 is in a locked state. When the transmission disc locking and unlocking flange engaging step notch 452 disengages from the aforementioned transmission disc locking and unlocking flange 475, the aforementioned transmission disc 47 is in an unlocked state and is supported above the transmission disc locking and unlocking flange support wheel 25. The transmission disc locking and unlocking flange support wheel 25 is mounted on the support wheel shaft 251, which is fixed horizontally to the left side of the aforementioned chair back connecting plate 2.

[0032] Depend on Figure 1 As illustrated, when the aforementioned transmission disc 47 rotates clockwise until one of the rearmost transmission disc limiting feet 476 contacts the lower surface of the aforementioned transmission disc clockwise / reverse rotation limit limiting baffle 13, the transmission disc 47 is prevented from rotating clockwise further, theoretically meaning it cannot rotate any further. However, since this mechanism is insufficient to provide the operator with a tactile feedback, applying a backward force to the backrest connecting plate 2 will undoubtedly damage it. Conversely, when the backrest and backrest connecting plate 2 flip forward towards the seat, if the frontmost transmission disc limiting foot 476 contacts the upper surface of the aforementioned transmission disc clockwise / reverse rotation limit limiting baffle 13, the transmission disc 47 is prevented from rotating counterclockwise further, and applying force will damage it. This is because, as mentioned above, this structure alone is insufficient to provide the operator with a clear tactile feedback.

[0033] See you later Figure 1A swing arm reset shaft up-and-down sliding hole 12 is formed on the aforementioned seat connecting plate 1 and at the lower part of the seat connecting plate 1; the aforementioned manual feeling prompting mechanism 5 comprises a swing arm shaft 51, a swing arm 52, a swing arm reset spring 53 and a roller 54, the left end of the swing arm shaft 51 is fixed with the left lower part of the aforementioned seat connecting plate 1, while the right end of the swing arm shaft 51 is configured as a horizontal cantilever end, a swing arm reset shaft 5211 is fixed on the swing arm first end part 521 of the swing arm 52, the swing arm reset shaft 5211 penetrates into the aforementioned swing arm reset shaft up-and-down sliding hole 12 and is in sliding fit with the swing arm reset shaft up-and-down sliding hole 12, a swing arm shaft fit hole 5221 is formed on the swing arm second end part 522 of the swing arm 52, the swing arm shaft fit hole 5221 is in pivotal fit with the right end of the aforementioned swing arm shaft 51, a roller lead-in recess 5212 is configured on the front side of the swing arm first end part 521 of the swing arm 52, while a roller rolling guide recess 523 is configured on the upper middle part of the swing arm 52, a hump 524 is configured between the roller rolling guide recess 523 and the aforementioned roller lead-in recess 5212, the swing arm reset spring 53 is sleeved on the middle part of the swing arm shaft 51 at the position between the seat connecting plate 1 and the left side of the swing arm first end part 521, the swing arm reset spring first foot 531 of the swing arm reset spring 53 is positioned on the swing arm shaft 51, while the swing arm reset spring second foot 532 of the swing arm reset spring 53 is hooked on the left end of the aforementioned swing arm reset shaft 5211, the roller 54 is rotatably arranged on the middle part of the roller shaft 541, and the roller shaft 541 forms a rolling pair with the aforementioned roller rolling guide recess 52, the hump 524 and the roller lead-in recess 5212, the two ends of the aforementioned roller shaft 541 are fixed on the roller shaft fixing seat 5411, while the roller shaft fixing seat 5411 is fixed on the left lower part of the aforementioned back connecting plate 2.

[0034] In the present application, the shapes of the aforementioned roller lead-in recess 5212 and the roller rolling guide recess 523 are both C-shaped, i.e. semicircular arc-shaped, and when the aforementioned back connecting plate 2 is flipped backward by the operator to drive the aforementioned roller 54 to displace along the roller rolling guide recess 523 of the aforementioned swing arm 52 and when the roller 54 passes the aforementioned hump 524 and instantaneously enters the aforementioned roller lead-in recess 5212, the operator can obtain the unusual feeling that the back is flipped backward to the limit.

[0035] The seat connecting plate fixing hole 14 for fixing with the seat of the automobile seat is formed on the aforementioned seat connecting plate 1, and a seat connecting plate fixing wing plate 15 is further configured; the aforementioned back connecting plate 2 is fixed with the framework of the back of the automobile seat by welding, riveting or through fasteners in the use state.

[0036] Please refer to Figure 2 and Figure 3 and in combination with Figure 1 , the applicant describes the use of the present utility model,Figure 2 The shown state indicates that the automobile seat's chair back connecting plate 2 is in normal use state between the automobile seat's seat. In this state, the aforementioned automatic angle adjuster 3 is actuated by the operation of the motor not shown in the figure, realizing the angle change of the chair back connecting plate 2 along with the chair back relative to the seat, for example, making the chair back connecting plate 2 along with the chair back recline backward or lean forward. In Figure 2 and Figure 3 The spline shaft 6 driven by the motor is shown in Figure 1 The driving member 32 belonging to the structural system of the automatic angle adjuster 3 is shown schematically to make the automatic angle adjuster 3 normally act. As aforementioned, since the working mechanism of the automatic angle adjuster 3 belongs to the prior art, for example, refer to CN221315882U (a hand self-operated type vehicle seat angle adjuster) not limited to the aforementioned, thus the applicant will not repeat it.

[0037] When the chair back of the automobile seat is to be turned backward from Figure 2 the shown state to the state that can be used for the occupant to lie down, that is, the state that tends to be horizontal or flat and can also be called the state that tends to be laid down, then the aforementioned unlocking shaft operating handle 4211 is operated by the operator, making the unlocking shaft 42 rotate counterclockwise, under the counterclockwise rotation of the unlocking shaft 42, the upper end of the shaft plate 43 is driven, thus the lower end of the shaft plate 43 drives the upper end of the transmission transition plate 44 through the hinged shaft 441 fixed on the right side of the transmission transition plate, since the lower end of the transmission transition plate 44 is hinged with the lower end of the locking and unlocking plate 45 (in essence, the rear end of the state shown in Figure 1 the transmission transition plate 44 rotates on the transmission transition plate foot stop abutting pin 24a through the transmission transition plate foot stop 443, driving the locking and unlocking plate 45 to rotate counterclockwise, making the state that the transmission disc locking and unlocking flange cooperating step gap 452 and the transmission disc locking and unlocking flange 475 are locked with each other change to the state that they are separated from each other, that is, the whole chair back manual turning mechanism 4 is unlocked from the transmission disc 47 due to the separation of the transmission disc locking and unlocking flange cooperating step gap 452 and the transmission disc locking and unlocking flange 475. In the aforementioned process, the unlocking shaft return spring 46 is wound and is in the energy storage state. At the same time, the operator pulls the chair back along with the chair back connecting plate 2 to the right (as shown in the state of Figure 3 the chair back connecting plate 2 rotates around the transmission disc pivot support shaft head 472, in the process of the rotation of the chair back connecting plate 2, the aforementioned roller 54 of the manual feeling prompting mechanism 5's structural system provided through the roller shaft 541 and by means of the roller shaft fixing seat 5411 changes from Figure 2 the position shown in Figure 3 the position shown in, in this process, the roller 54 enters the roller guide-in concave cavity 5212 through the roller rolling guide concave cavity 523 and the hump 524 of the swing arm 52 in sequence.Figure 3 The moment the roller 54 rolls into the roller guide recess 5212 from the wave-peak-like hump 524, the operator will feel a "click" (also known as "click") feeling, indicating that the backrest and the backrest connecting plate 2 have been turned back to the position and cannot be turned back any more. In the foregoing process, since the roller 54 pushes the swing arm 52 to rotate around the swing arm shaft 51, the swing arm reset shaft 5211 is compressed by the swing arm reset spring second foot 532 and the swing arm reset spring 53 to store energy. When the roller 54 passes through the hump 524, the swing arm 52 rotates clockwise around the swing arm shaft 51 under the spring force release of the swing arm reset spring 53, and the roller 54 is limited by the roller guide recess 5212. When it is required to return the backrest to the state shown in Figure 3 the state shown in Figure 2 the state shown in

[0038] The technical scheme provided by the utility model makes up for the defects in the prior art, successfully completes the invention task, and truly realizes the technical effects described by the applicant in the technical effect column above.

Claims

1. A power-assisted and manually-assisted angle adjuster for a car seat, which is capable of tilting a seat back to a limit, comprising a seat base connecting plate (1) for connecting with a seat base of a car seat in a use state, a seat back connecting plate (2) for connecting with a seat back of a car seat in a use state, an automatic angle adjuster (3) provided between the seat base connecting plate and the seat back connecting plate (2) for tilting the seat back connecting plate (2) together with the seat back forward or backward relative to the seat base, and a seat back manual tilting mechanism (4) provided at an upper left side of the seat back connecting plate (2) for locking or unlocking the automatic angle adjuster (3) and, in an unlocked state of the automatic angle adjuster (3), tilting the seat back backward to a lying state of an occupant in a direction away from the seat base, characterized in that: Also included is a manual sense prompting mechanism (5) for providing the operator with a manual sense prompting for stopping the further turning when the operator turns the chair back manually to a degree of lying down by using the chair back manual turning mechanism (4), which is arranged between the lower part of the opposite sides of the chair seat connecting plate (1) and the chair back connecting plate (2).

2. The hands-free angle adjuster for a car seat capable of prompting the backrest to flip to an extreme degree according to claim 1, characterized in that: An automatic angle adjusting device cooperating hole (11) is arranged on the chair seat connecting plate (1) and at the upper part of the chair seat connecting plate (1), a driving disc shaft head pivoting cooperating hole (21) is arranged at the lower part of the chair back connecting plate (2) and at the position corresponding to the automatic angle adjusting device cooperating hole (11), the automatic angle adjusting device (3) has a movable gear disc (31); the chair back manual turning mechanism (4) is cooperated with the right side of the movable gear disc (31) and also cooperated with the driving disc shaft head pivoting cooperating hole (21).

3. The hands-free power backrest recliner chair angle adjuster of claim 2, wherein: The chair back manual turnover mechanism (4) comprises a shaft connecting plate (41), an unlocking rotating shaft (42), a rotating shaft plate (43), a transmission transition plate (44), a locking and unlocking plate (45), an unlocking rotating shaft reset spring (46) and a transmission disc (47). The shaft connecting plate (41) is located on the upper left side of the chair back connecting plate (2). The left end of the unlocking rotating shaft (42) is rotatably supported on the shaft connecting plate (41), and the right end is rotatably supported on the upper part of the chair back connecting plate (2). The rotating shaft plate (43) is fixed to one end of the unlocking rotating shaft (42). The upper end of the transmission transition plate (44) is hinged to one end of the rotating shaft plate (43) away from the unlocking rotating shaft (42) through a transmission transition plate upper hinge shaft (441). The lower end of the transmission transition plate (44) is hinged to the right end of the locking and unlocking plate (45) through a transmission transition plate lower hinge shaft (442). A transmission transition plate foot stop (443) extends from the right end face of the transmission transition plate (44). The transmission transition plate foot stop (443) abuts against the left side of the chair back connecting plate (2). The locking and unlocking plate (45) is fixed to the middle part of the locking and unlocking plate shaft (451). The two ends of the locking and unlocking plate shaft (451) are rotatably supported between the shaft connecting plate (41) and the chair back connecting plate (2). The unlocking rotating shaft reset spring (46) is sleeved on the unlocking rotating shaft (42). The first spring leg (461) of the unlocking rotating shaft reset spring (46) is positioned on the unlocking rotating shaft (42), and the second spring leg (462) of the unlocking rotating shaft reset spring (46) abuts against the left end of the chair back connecting plate (2). The transmission disc (47) is matched with the driving tooth disc (31) at a position corresponding to the right side of the automatic angle adjuster (3). An automatic angle adjuster driving shaft through hole (471) is formed in the center of the transmission disc (47). A transmission disc pivot support shaft head (472) is arranged on the right side of the transmission disc (47) and in the circumferential direction of the automatic angle adjuster driving shaft through hole (471). The transmission disc pivot support shaft head (472) is rotatably supported in the transmission disc shaft head pivot cooperation hole (21) and extends to the right side of the chair back connecting plate (2). A transmission disc forward and reverse rotation limit degree limiting baffle (13) is fixed on the right side of the seat connecting plate (1) and at a position corresponding to the lower part of the transmission disc (47) in a state perpendicular to the seat connecting plate (1).

4. The hands-free angle adjuster for a car seat that can tip the seat back to an extreme degree according to claim 3, characterized in that: On the right side edge portion of the shaft connecting plate (41), an n-shaped shaft connecting plate stack edge (411) is formed, and the right side of the shaft connecting plate (41) is formed into a shaft connecting plate cavity (412) by the shaft connecting plate stack edge (411). An unlocking shaft left end pivot support hole (413) is formed on the shaft connecting plate (41) and at a position corresponding to the left end of the unlocking shaft (42), and a locking and unlocking plate shaft left pivot support hole (414) is formed at a position corresponding to the left end of the locking and unlocking plate shaft (451). An unlocking shaft rotation support sleeve (22) is fixed on the backrest connecting plate (2) and at a position corresponding to the right end of the unlocking shaft (42), and a locking and unlocking plate shaft right pivot support hole (23) is formed on the backrest connecting plate (2) and at a position corresponding to the right end of the locking and unlocking plate shaft (451). The left end of the unlocking shaft (42) is rotatably supported on the unlocking shaft left end pivot support hole (413) by an unlocking shaft bearing, and the right end of the unlocking shaft (42) extends to the right side of the unlocking shaft rotation support sleeve (22) from the unlocking shaft rotation support sleeve hole (221) of the unlocking shaft rotation support sleeve (22) and is formed into an unlocking shaft operation handle matching spline head (421). A unlocking shaft operation handle (4211) is matched in spline on the unlocking shaft operation handle matching spline head (421). The left end of the locking and unlocking plate shaft (451) is rotatably supported on the locking and unlocking plate shaft left pivot support hole (414), and the right end of the locking and unlocking plate shaft (451) is rotatably supported on the locking and unlocking plate shaft right pivot support hole (23).

5. The hands-free angle adjuster for a vehicle seat that prompts the seat back to be flipped to an extreme degree according to claim 3, characterized in that: On the left side of the backrest connecting plate (2) and at a position corresponding to the transmission transition plate foot stop (443), a transmission transition plate foot stop abutting pin shaft (24a) is fixed, and at a position corresponding to the second spring foot (462), a spring foot positioning pin shaft (24b) is fixed. The transmission transition plate foot stop (443) abuts against the rear side of the transmission transition plate foot stop abutting pin shaft (24a), and the second spring foot (462) abuts against the front side of the spring foot positioning pin shaft (24b).

6. The hands-free angle adjuster for a vehicle seat that can tip the seat back to an extreme degree according to claim 3, characterized in that: A first dynamic toothed disc protrusion (311) and a second dynamic toothed disc protrusion (312) are formed on the right side of the dynamic toothed disc (31) and protrude from the right side surface of the dynamic toothed disc (31), the first and second dynamic toothed disc protrusions (311, 312) are separated by 180° along the circumferential direction of the dynamic toothed disc (31), and the shapes of the first and second dynamic toothed disc protrusions (311, 312) are different or the same; a first dynamic toothed disc protrusion matching hole (473) is formed on the transmission disc (47) and extends through the thickness direction of the transmission disc (47) at a position corresponding to the first dynamic toothed disc protrusion (311), and a second dynamic toothed disc protrusion matching hole (474) is also formed on the transmission disc (47) and extends through the thickness direction of the transmission disc (47) at a position corresponding to the second dynamic toothed disc protrusion (312), the shape of the first dynamic toothed disc protrusion matching hole (473) is the same as that of the first dynamic toothed disc protrusion (311) and is appropriately sized, and the shape of the second dynamic toothed disc protrusion matching hole (474) is the same as that of the second dynamic toothed disc protrusion (312) and is appropriately sized; a transmission disc pivot support shaft head limiting snap spring disc groove (4721) is formed on the transmission disc pivot support shaft head (472) and along the circumferential direction of the transmission disc pivot support shaft head (472), a transmission disc pivot support shaft head limiting snap spring disc (47211) is embedded in the transmission disc pivot support shaft head limiting snap spring disc groove (4721), and the transmission disc pivot support shaft head limiting snap spring disc (47211) is located on the right side of the backrest connecting plate (2) at a position corresponding to the transmission disc shaft head pivot matching hole (21).

7. The hands-free angle adjuster for a vehicle seat that can tip the seat back to an extreme degree according to claim 3, characterized in that: A transmission disc locking and unlocking flange (475) is extended on the transmission disc (47) and at a position corresponding to the locking and unlocking plate (45), and a pair of transmission disc limiting stop feet (476) are extended at a position corresponding to the transmission disc forward and reverse rotation limit degree limiting baffle (13) and at a spaced state, the transmission disc forward and reverse rotation limit degree limiting baffle (13) corresponds to the pair of transmission disc limiting stop feet (476); a transmission disc locking and unlocking flange matching stepped gap (452) is formed on the locking and unlocking plate (45) and at a position corresponding to the transmission disc locking and unlocking flange (475), when the transmission disc locking and unlocking flange matching stepped gap (452) matches the transmission disc locking and unlocking flange (475), the transmission disc (47) is in a locked state, and when the transmission disc locking and unlocking flange matching stepped gap (452) is disengaged from the transmission disc locking and unlocking flange (475), the transmission disc (47) is in an unlocked state and is supported above the transmission disc locking and unlocking flange supporting wheel (25), and the transmission disc locking and unlocking flange supporting wheel (25) is arranged on the supporting wheel shaft (251) which is fixed in a horizontal state on the left side of the backrest connecting plate (2).

8. The hands-free angle adjuster for a vehicle seat that prompts the seat back to be flipped to an extreme degree according to claim 1, characterized in that: A swing arm reset shaft up-and-down sliding hole (12) is opened on the seat connecting plate (1) and at the lower part of the seat connecting plate (1); the manual feeling prompting mechanism (5) comprises a swing arm shaft (51), a swing arm (52), a swing arm reset spring (53) and a roller (54), the left end of the swing arm shaft (51) is fixed with the left lower part of the seat connecting plate (1), and the right end of the swing arm shaft (51) is configured as a horizontal cantilever end, a swing arm reset shaft (5211) is fixed on the swing arm first end (521) of the swing arm (52), the swing arm reset shaft (5211) is inserted into the swing arm reset shaft up-and-down sliding hole (12) and is in sliding fit with the swing arm reset shaft up-and-down sliding hole (12), a swing arm shaft fit hole (5221) is opened on the swing arm second end (522) of the swing arm (52), the swing arm shaft fit hole (5221) is in pivotal fit with the right end of the swing arm shaft (51), a roller guide-in recess (5212) is configured on the front side of the swing arm first end (521) of the swing arm (52), a roller rolling guide recess (523) is configured on the upper middle part of the swing arm (52), a hump (524) is configured between the roller rolling guide recess (523) and the roller guide-in recess (5212), the swing arm reset spring (53) is sleeved on the middle part of the swing arm shaft (51) at the position between the seat connecting plate (1) and the left side of the swing arm first end (521), the swing arm reset spring first foot (531) of the swing arm reset spring (53) is positioned on the swing arm shaft (51), the swing arm reset spring second foot (532) of the swing arm reset spring (53) is hooked on the left end of the swing arm reset shaft (5211), the roller (54) is rotatably arranged on the middle part of the roller shaft (541), the roller shaft (541) forms a rolling pair with the roller rolling guide recess (523), the hump (524) and the roller guide-in recess (5212), the two ends of the roller shaft (541) are fixed on the roller shaft fixing seat (5411), and the roller shaft fixing seat (5411) is fixed on the left lower part of the back connecting plate (2).

9. The power tilt seat angle adjuster of claim 8, wherein: The shapes of the roller guide-in recess (5212) and the roller rolling guide recess (523) are both C-shaped, and when the back connecting plate (2) is flipped backward by the operator to drive the roller (54) to displace along the roller rolling guide recess (523) of the swing arm (52) and when the roller (54) passes over the hump (524) and instantaneously enters the roller guide-in recess (5212), the operator can obtain the unusual feeling that the back is flipped backward to the limit.

10. The power tilt seat angle adjuster of claim 1 or 2, wherein: A seat connecting plate fixing hole (14) is opened on the seat connecting plate (1) and is used for fixing the seat of the automobile seat, and a seat connecting plate fixing wing plate (15) is further configured; the back connecting plate (2) is fixed with the framework of the back of the automobile seat by welding, riveting or through fasteners in the use state.

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