CN112721752A

CN112721752A - Locking mechanism of manual height adjusting device of automobile seat

Info

Publication number: CN112721752A
Application number: CN202010706281.8A
Authority: CN
Inventors: 李俊伟; 金龙; 常健; 唐臻毅
Original assignee: Keiper Seating Mechanisms Co Ltd
Current assignee: Keiper Changshu Seating Mechanisms Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-04-30
Anticipated expiration: 2040-07-21
Also published as: CN112721752B

Abstract

The invention discloses a locking mechanism of a manual height adjusting device of an automobile seat, which comprises a braking part and a handle connecting plate, wherein the braking part is provided with a braking shaft, and the locking mechanism also comprises: the locking disc is fixedly connected with the brake shaft, and a locking groove is formed in the locking disc; the locking mechanism comprises a locking part, a locking groove and a locking part, wherein the locking part is arranged on the locking part in a linear sliding mode; the handle connecting plate is provided with an unlocking part, the handle connecting plate idles relative to the brake shaft in a period from an unlocking initial state to unlocking completion, the unlocking part is driven to drive the lock pin to overcome elastic resistance to move towards a direction far away from the locking disc until the locking part completely exits from a locking groove on the locking disc, and the circumferential rotation of the locking disc is unlocked; after unlocking is completed, the brake shaft, the handle connecting plate and the locking disc rotate synchronously.

Description

Locking mechanism of manual height adjusting device of automobile seat

Technical Field

The invention belongs to the technical field of automobile seat transmission parts, and particularly designs a locking mechanism of a manual height adjusting device of an automobile seat.

Background

The product locking dish of the manual height-adjusting of car seat on the existing market is stepped to be locked, and the locking dish rotates for electrodeless rotation, and current manual height-adjusting device itself has certain reverse locking ability, nevertheless hits the experiment after the harshness, and certain locking ability can't overcome the back drive moment of torsion that comes from the skeleton, hits the experiment after under the lock condition still can be reverse with locking jack catch jack-up unblock inefficacy that makes progress.

For this purpose. Chinese invention patent application publication No. CN107074128A discloses an adjustment device for a motor vehicle, comprising a housing, in which a rotary element is rotatably mounted about a rotational axis, and comprising a locking device having a first locking element and a second locking element, the first locking element being connected to the rotary element in a relatively non-rotatable manner and the second locking element being arranged on the housing, wherein the second locking element is reversibly movable between a primary position in a locked condition (the first and second locking elements cooperate with each other via a shape and/or force-locking connection in an unlocked region) and a secondary position in an adjusted condition (the shape and/or force-locking connection between the first and second locking elements is removed), wherein the adjustment device has an adapter plate which is rotatably mounted relative to the rotary element and the housing, wherein the unlocking element on the second locking element cooperates with the adapter plate within the actuator region when the second locking element is transferred from the primary position to the secondary position, wherein the second locking element is offset in the secondary position with respect to the primary position by an unlocking height within the unlocking region and by a lifting height within the actuator region, wherein the actuator region is arranged such that the lifting height is smaller than the unlocking height.

The above patent application realizes manual high-adjustment locking through the cooperation of locking plate and toothed disc, but in extreme cases, can cause reverse unblock, leads to the seat basin to sink.

To this end, the applicant filed a title "locking mechanism for a manual height-adjusting device of an automobile seat" (application publication No. CN111114397A) to the national intellectual property office on 16/1/2020, wherein the height-adjusting device is provided with a brake component and a handle driving disc, the brake component is provided with a brake shaft, and the locking mechanism comprises: the locking fluted disc penetrates through the brake shaft and is installed on the handle driving disc, and an annular boss is arranged on the upper surface of the locking fluted disc; the locking plate is arranged on the locking fluted disc, a kidney-shaped hole is formed in the locking fluted disc, the annular boss on the locking fluted disc is arranged in the kidney-shaped hole in a relatively sliding mode, a cylindrical pin protruding downwards is arranged on one side of the lower surface of the locking plate, and the cylindrical pin is embedded in a cam sliding groove of the handle driving disc in a sliding mode; partial gear ring features are arranged on the lower surface of the locking plate and between the cam and the kidney-shaped hole, and when the cylindrical pin on the locking plate moves from the cam sliding groove to the far end of the brake shaft to the near end of the brake shaft, the locking fluted disc is meshed with the partial gear ring features. The multiple tooth grooves are meshed simultaneously, so that enough locking torque can be provided, and the problem that the front-back collision self-locking of a manual seat height adjusting device is unreliable can be solved.

However, the locking mechanism of the manual height-adjusting device of the automobile seat has the following problems: the structure is complicated and the cost is high.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art by providing a locking mechanism of a manual height adjusting device of an automobile seat, which has a simple structure and low cost.

The technical problem to be solved by the invention can be realized by the following technical scheme:

the utility model provides a manual high device locking mechanism of transferring of car seat, includes brake part and handle connecting plate, brake part has a brake axle, with the position that the handle connecting plate is connected is provided with a spline, its characterized in that: further comprising:

the locking disc is fixedly connected with the brake shaft, and at least one locking groove is formed in the locking disc;

at least one lock pin which is configured on the brake component in a linear sliding mode, wherein one end of the lock pin, which faces the lock disc, is provided with at least one locking part, and in a locking state, the lock pin moves towards the lock disc under the action of elastic force, so that the at least one locking part is embedded into at least one locking groove on the lock disc to lock the circumferential rotation of the lock disc;

the center of the handle connecting plate is provided with a spline hole matched with the spline, and the handle connecting plate is provided with at least one unlocking part; in a period from an initial unlocking state to completion of unlocking of the handle connecting plate, the handle connecting plate idles relative to the brake shaft and simultaneously drives the unlocking part to drive the lock pin to overcome elastic resistance to move towards a direction far away from the locking disc until the locking part completely exits from a locking groove on the locking disc, and the circumferential rotation of the locking disc is unlocked; after the unlocking is completed, the brake shaft, the handle connecting plate and the locking disc synchronously rotate.

In a preferred embodiment of the present invention, at least one unlocking holding portion is further disposed on the handle connecting plate, the unlocking holding portion is connected to the unlocking portion in series, and the unlocking holding portion holds the lock pin in the unlocked state after the lock pin is unlocked.

In a preferred embodiment of the present invention, when there are at least two unlocking holders, the two unlocking holders are symmetrically distributed around the unlocking portion.

In a preferred embodiment of the present invention, the locking groove is provided on an outer periphery of the locking disc adjacent to the locking pin, and the unlocking portion and the unlocking holding portion are provided on an outer periphery of the handle attachment plate adjacent to the locking pin.

In a preferred embodiment of the present invention, each locking portion of the lock pin is divided into at least two parts, namely a first locking portion and at least one second locking portion, wherein the first locking portion is unlocked in cooperation with the unlocking portion on the handle connecting plate and is unlocked and retained in cooperation with the unlocking retaining portion after being unlocked, and the second locking portion is locked in cooperation with the locking groove on the locking disc.

In a preferred embodiment of the invention, the first locking portion and the second locking portion have the same or different structural characteristics.

In a preferred embodiment of the present invention, the shape of the first locking portion and the shape of the unlocking portion are in a mutually coupled relationship; the second locking portion is shaped to be in a mutually coupled relationship with the locking groove.

In a preferred embodiment of the invention, the at least one second latching section is received in at least one latching groove of the latching disk when latching.

In a preferred embodiment of the invention, there are two second locking portions, and when locking, the two second locking portions are simultaneously received in the two locking grooves of the locking disk.

In a preferred embodiment of the present invention, the unlocking maintaining portion is a convex arc provided on an outer periphery of the handle connecting plate, the unlocking portion is recessed in the convex arc, and the locking portion of the lock pins is received in the unlocking portion when the lock pins are in the locked state.

In a preferred embodiment of the present invention, the unlocking part is a groove, when the lock pin is in the locked state, the locking part of the lock pin is received in the groove and contacts with a groove wall of the groove, and during unlocking, the groove wall of the groove pushes the locking part to move towards the unlocking direction until the locking part exits the groove.

In a preferred embodiment of the invention, the groove is a V-groove or a U-groove.

In a preferred embodiment of the invention, a plurality of locking grooves are uniformly distributed at intervals on the outer periphery of the locking disc.

In a preferred embodiment of the present invention, the locking angle between two adjacent locking grooves is less than 20 °.

In a preferred embodiment of the invention, 18-20 locking grooves are uniformly distributed at intervals on the outer periphery of the locking disc. In addition, the number of the locking grooves can be adjusted according to the requirements of customers.

In a preferred embodiment of the present invention, in order to improve the self-locking capability of the lock pin and the locking groove, the locking groove is preferably rectangular, but may also be trapezoidal or other shapes; when the locking groove is trapezoidal, in order to ensure the self-locking of the locking disc and the first locking part of the lock pin, the locking surfaces at two sides of the locking groove are symmetrically arranged relative to the central plane of the locking groove, and the included angle alpha between each locking surface and the central plane is less than 5.7 degrees.

In a preferred embodiment of the present invention, the lock pin linear sliding direction is parallel to a radial line of the lock plate, or a small angle is formed between the lock pin linear sliding direction and the radial line of the lock plate.

In a preferred embodiment of the invention, a housing is provided on the braking part, on which housing the locking pin is arranged in a linear sliding manner.

In a preferred embodiment of the present invention, a lock pin seat is disposed on the housing, a lock pin hole is disposed in the lock pin seat, and the lock pin is disposed in the lock pin hole in a linear sliding manner; and a limit screw and an elastic element for applying elasticity to the lock pin are also arranged in the lock pin hole, the limit screw is connected with the lock pin hole in a threaded mode or a press-fitting mode or a buckling mode, and the elastic element is arranged between the lock pin and the limit screw.

In a preferred embodiment of the present invention, the elastic element is selected from one or a combination of any two or more of metal-nonmetal springs, rubber, polyurethane or other elastic elements.

In a preferred embodiment of the present invention, at least one first guiding plane for guiding and preventing rotation is disposed on the outer circumferential surface of the lock pin, at least one second guiding plane for guiding and preventing rotation is disposed in the lock pin hole, and the first guiding plane is in sliding fit with the second guiding plane.

Due to the adoption of the technical scheme, the locking and unlocking of the brake shaft in the brake component can be realized only by adding the locking disc and the unlocking part on the existing handle connecting plate, and the handle connecting plate has the advantages of simple structure and low cost. The invention can obviously improve the locking capacity of manual high-speed adjustment, and particularly provides second locking protection for the manual high-speed adjustment when the braking stage rotates aiming at the manual high-speed adjustment of some high-end vehicle types. The invention can be produced in a platform mode and is compatible with handle interfaces of different host factories.

Drawings

FIG. 1 is a schematic assembly view of one embodiment of a locking mechanism of a manual height adjusting device of an automobile seat.

Fig. 2 is an exploded view of an embodiment of the locking mechanism of the manual height adjusting device of the automobile seat.

Fig. 3 is a schematic view of the assembly relationship between the lock pin and the housing of one embodiment of the locking mechanism of the manual height adjusting device of the automobile seat.

Fig. 4 is a schematic view of the assembly of the lock pin, the spring, the limit screw and the housing of one embodiment of the locking mechanism of the manual height adjusting device for the automobile seat.

FIG. 5 is a schematic view of an embodiment of a locking mechanism of a manual height adjusting device of an automobile seat according to the present invention, wherein the locking groove of the locking plate is a trapezoidal locking groove.

Fig. 6 is a schematic view showing a state where the first locking portion and the second locking portion of the lock pin locking portion do not coincide with each other in the manual high-reclining device locking mechanism of an automobile seat according to an embodiment of the present invention.

Fig. 7 is a schematic view illustrating that the locking portion of the lock pin simultaneously cooperates with two locking grooves in one embodiment of the locking mechanism of the manual height adjusting device for the automobile seat according to the present invention.

FIG. 8 is a schematic diagram of the relationship between the lock pin and the handle connecting plate of the locking mechanism of the manual height adjusting device of the automobile seat according to one embodiment of the invention.

FIG. 9 is a schematic diagram of the relationship between the lock pin and the lock plate of the locking mechanism of the manual height adjusting device for the automobile seat according to one embodiment of the invention.

FIG. 10 is a schematic diagram showing the relationship among the lock pin, the lock plate and the brake shaft of the locking mechanism of the manual height adjusting device for the automobile seat according to the embodiment of the invention.

Fig. 11 is a schematic view of an embodiment of the locking mechanism of the manual height adjusting device of the automobile seat in a locking/locking state.

Fig. 12 is an enlarged schematic view at I of fig. 11.

Fig. 13 is a schematic view of an embodiment of the locking mechanism of the manual height adjusting device for the automobile seat in the unlocking process.

Fig. 14 is an enlarged schematic view at I of fig. 13.

Fig. 15 is a schematic view of an unlocked state of one embodiment of the locking mechanism of the manual height adjusting device of the automobile seat.

Fig. 16 is an enlarged schematic view at I of fig. 15.

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description. The embodiments described below are only illustrative of the technical solutions of the present invention, and do not limit the scope of the claims of the present invention.

Referring to fig. 1 to 10, a locking mechanism of a manual height adjusting device of a car seat is shown, which comprises a brake member 100 and a handle connecting plate 200, wherein the brake member 100 is structurally identical to the existing brake member, which is not described in detail below.

The brake member 100 has a brake shaft 110 and a spline 140 at the connection with the handle attachment plate 200, although other keys or other structures having protruding features are possible.

A splined opening 210 is formed in the center of the handle attachment plate 200 to accommodate the splines 140, although other keyholes or other configurations with apertured features are possible.

When the brake lever is assembled, the spline hole 210 of the handle connecting plate 200 is sleeved on the spline 140, and in the invention, a gap is formed between the central hole of the spline 140 and the brake shaft 110. Thus, the handle connecting plate 200 has a section of idle stroke when rotating relative to the brake shaft 110, and after the idle stroke is finished, the brake shaft 110 and the handle connecting plate 200 synchronously rotate.

In the present invention, the handle link plate 200 is provided with the unlocking portion 220 and the unlocking holding portion 230, but the handle link plate 200 is not limited to the one unlocking portion and the unlocking holding portion, and may be provided in a plurality of positions.

The unlocking holding portion 230 is connected to the unlocking portion 220. The number of the unlocking holders 230 may be one or two for one unlocking portion 220. If the number of the unlocking maintaining parts 230 is two, the unlocking parts 220 are symmetrically distributed on the left and right sides of the unlocking part 220 with the unlocking part 220 as the center. As a specific example, the unlocking portion 220 and the unlocking holding portion 230 are both disposed on the outer peripheral edge 240 of the handle attachment plate 200. As a further particular example, the handle attachment plate 200 may have a symmetrical shape about its outer periphery, which may facilitate manufacture and may also provide balance in the present invention. As a further specific example, the unlocking portion 220 and the unlocking holding portion 230 are both disposed on the handle attachment plate 200 adjacent to the outer peripheral edge 240 of the lock pin 300 described below.

The unlocking maintaining portion 230 is a segment of an outwardly convex arc 241 disposed on the outer peripheral edge 240 of the handle attachment plate 200, and the unlocking portion 220 is recessed in the outwardly convex arc 241. As a specific example, the unlocking portion 220 is a groove, particularly a V/U-shaped groove. Of course, other shapes of the grooves are possible.

The present invention further includes a locking plate 400, a hole 410 adapted to the brake shaft 110 is formed at the center of the locking plate 400, and the brake shaft 110 is inserted into the hole 410 during assembly. To facilitate welding of locking disc 400 to brake shaft 110, a flanging feature 420 is provided at the location of central opening 410 of locking disc 400, flanging feature 420 being welded to brake shaft 110.

Locking disc 400 is mounted to brake shaft 110 generally above handle attachment plate 200 to axially restrain handle attachment plate 200 from backing out of brake shaft 110. Of course, below the handle attachment plate 200 is not excluded.

At least one locking groove 430 is provided on the locking plate 400, the locking groove 430 being provided in particular on the outer circumference of the locking plate 400, the number of locking grooves 430 being one or more. To ensure the stepped locking of the locking plate 400 at different angles, a plurality of locking grooves 430 are uniformly distributed at intervals on the outer periphery of the locking plate 400.

In order to ensure that the locking angle between two adjacent locking grooves 430 is less than 20 °, the number of the locking grooves 430 is at least 18, in this embodiment, the number of the locking grooves 430 is 20, and of course, the number of the locking grooves can be adjusted according to different requirements of customers.

In order to improve the self-locking capability of the locking portion 303 and the locking groove 430 in the lock pin 300, the locking groove 430 is preferably rectangular, but may be in other shapes such as a trapezoid. When the locking groove 430 is trapezoidal, as shown in fig. 5, in order to ensure the self-locking of the locking groove 430 on the locking disc 400 and the locking part 303 in the lock pin 300, the locking surfaces 431 and 432 on both sides of the locking groove 430 are symmetrically arranged relative to the central plane 433 of the locking groove 430, and the included angle α between each locking

surface

431 or 432 and the central plane 433 is less than 5.7 °.

The locking pin 300 of the present invention is disposed on the brake member 100 in a linear sliding manner, and particularly, is disposed on the housing 120 of the brake member 100 in a linear sliding manner. In order to assemble the lock pin 300, the present invention provides a lock pin holder 130 on the housing 120, a lock pin hole 131 is disposed in the lock pin holder 130, and the lock pin 300 is disposed in the lock pin hole 131 in a linear sliding manner and can be extended and retracted in the lock pin hole 131. The linear sliding direction of the lock pin 300 is parallel to the radial line of the lock plate 400, or there is a small angle between the linear sliding direction of the lock pin 300 and the radial line of the lock plate 400.

The locking part 303 of the lock pin 300 is divided into two parts, namely a first locking part 303a and at least one second locking part 303b, wherein the first locking part 303a is matched with the unlocking part 220 on the handle connecting plate 200 for unlocking and matched with the unlocking holding part 230 for unlocking and holding after unlocking, and the second locking part 303b is matched with the locking groove 430 on the locking disc 400 for locking.

In the present embodiment, the first locking portion 303a of the locking portion 303 of the lock pin 300 has the same or different structural features as the second locking portion 303 b. If the same is true, the structure is a square column structure. As shown in fig. 6, the second locking portion 303b has a rectangular structure or a trapezoidal shape in a mutually coupled relationship with the locking groove 430 of the locking disc 400. Other shapes are of course possible in a mutually coupling relationship with the locking groove 430 of the locking disc 400. The first locking portion 303a has a V-shaped or U-shaped configuration that is coupled to the unlocking portion 220 of the handle link plate 200, but may have another shape that is coupled to the unlocking portion 220 of the handle link plate 200.

In this embodiment, the second locking portion 303b of the lock pin 300 may be one and is received in one locking groove 430 of the locking plate 400, but of course, the second locking portion 303b may be two or more and is simultaneously matched with two or more locking grooves 430, as shown in fig. 7, the lock pin 300 has two second locking portions 303ba and 303bb which are respectively matched with two locking grooves 430 of the locking plate 400.

In order that in the locked state, the lock pin 300 can protrude out of the lock pin hole 131; the present invention further includes a limit screw 310 and a resilient member 320 for applying a resilient force to the lock pin 300, which are disposed in the lock pin hole 131, wherein the limit screw 310 is connected to the lock pin hole 131 by a screw or a press-fit or snap-fit connection or any other means known to those skilled in the art, and the present embodiment is preferably a screw.

The elastic member 320 is disposed between the locking pin 300 and the setscrew 320. The elastic element 320 is selected from one or a combination of any two or more of metal and nonmetal springs, rubber, polyurethane or other elastic elements. In this embodiment, the elastic member 320 is preferably a cylindrical spring.

In order to reduce the space for arranging the spring 320 and improve the stability of the spring 320, a spring counterbore 301 is arranged at the end of the lock pin 300 facing the spring 320, and a cylindrical spring acts on the end of the lock pin 300 inserted into the spring counterbore 310. Of course, it is also possible to provide a spring post at the end of the locking pin 300 facing the spring 320, the cylindrical spring acting on the end of the locking pin 300 and fitting over the spring post.

In order to restrict the lock pin 300 from moving linearly only in a direction parallel to the radial line of the lock plate 400 without rotating and to reduce the vertical height of the lock mechanism, two first guide planes 302 for guiding and preventing rotation are provided on the outer peripheral surface of the lock pin 300 in an up-down symmetrical manner, but of course, only one first guide plane 302 may be provided. The first guide plane 302 extends in a direction parallel to the axis of the lock pin 300. Corresponding to the first guiding planes 302 on the lock pin 300, guiding and rotation-preventing second guiding planes 131a with the same number as the first guiding planes 302 are arranged in the lock pin hole 131, and the first guiding planes 302 are in sliding fit with the second guiding planes 131 a.

In order to make the lock pin 300 better locked and matched with the locking groove 430 on the locking disc 400 and simultaneously facilitate the unlocking of the unlocking part 220 on the handle connecting plate 200, a locking part 303 is arranged at one end of the lock pin 300 facing the locking disc 400, and the shape of the locking part 303 is matched with that of the locking groove 430, and is also rectangular. The height direction of the locking part 303 is less than or equal to the distance between the two first guide planes 302, but the locking part is required to be longitudinally matched with the locking groove 430 and the unlocking part 220; the width of the locking portion 303 is smaller than the maximum outer diameter of the lock pin 300 and is equal to or smaller than the width of the locking groove 430; to ensure reliable unlocking, the length of the overlapping edge of the locking portion 303 and the locking groove 430 is smaller than the radial depth of the groove of the unlocking portion 220 of the handle connecting plate 200.

The operation principle of the locking mechanism of the manual height adjusting device for the automobile seat of the invention is described in the following with reference to fig. 11 to 16:

referring to fig. 11 and 12, the locking mechanism of the manual height adjusting device for the automobile seat according to the present invention has the following locking/locking principle:

when the handle connecting plate 200 is returned, the V-shaped groove notch of the unlocking part 220 on the handle connecting plate 200 is aligned with the locking part 303 on the lock pin 300, and the lock pin 300 is linearly moved radially toward the rotation center direction of the lock disc 400 by the spring 320, wherein the lock pin 300 is not rotated in the circumferential direction due to the sliding fit of the first guide plane 302 on the lock pin 300 and the second guide plane 131a in the lock pin hole 131. When the locking part 303 of the lock pin 300 is just right opposite to one locking groove 430 on the locking disc 400, the lock pin 300 extends out of the lock pin hole 131 under the action of the spring 320 to normally fall and lock, and the locking part 303 of the lock pin 300 is embedded into one locking groove 430 on the locking disc 400 to lock the circumferential rotation of the locking disc 400; and the locking part 303 of the locking pin 300 is also received in the V-shaped groove of the unlocking part 220 of the handle connecting plate 200 and contacts with the groove wall 221 of the V-shaped groove. When the lock pin 300 is not locked, once the brake shaft 110 of the brake member 100 rotates, the lock plate 400 integrated with the brake shaft 110 rotates synchronously, and when the lock plate 400 rotates to a normal lock-falling state, the locking portion 303 of the lock pin 300 normally falls in the above manner, and the locking portion 303 of the lock pin 300 is inserted into one of the locking grooves 430 of the lock plate 400 to lock the circumferential rotation of the lock plate 400.

When the locking is performed, the reverse driving torque from the brake shaft 110 causes the locking disc 400 to have a tendency to rotate relative to the lock pin 300, and the locking portion 303 of the lock pin 300 inserted into the locking groove 430 of the locking disc 400 provides a circumferential component force to prevent the brake shaft 110 from being reversely rotated.

Referring to fig. 13 to 16, the unlocking principle of the locking mechanism of the manual height adjusting device for the automobile seat of the invention is as follows:

the handle directly drives the handle coupling plate 200, and the handle coupling plate 200 first idles against the brake shaft 110 while the brake shaft 110 and the locking disc 400 do not rotate. The groove wall 221 of the V-shaped groove of the unlocking part 220 on the handle connecting plate 200 applies an outward component force to the locking part 303 on the lock pin 300, so that the lock pin 300 moves backwards after overcoming the resistance of the spring 320, gradually withdraws from the locking groove 430 on the locking disc 400 and retracts into the lock pin hole 131 to complete unlocking, and during the backward movement of the lock pin 300, the lock pin 300 cannot rotate around the circumferential direction due to the mutual sliding fit of the first guide plane 302 on the lock pin 300 and the second guide plane 131a in the lock pin hole 131.

After the unlocking is completed, the outward convex arc 241 of the unlocking holding portion 240 abuts against the locking portion 303 and always abuts the lock pin 300 in the lock pin hole 131 through the locking portion 303, thereby holding the lock pin 300 in the unlocked state. After unlocking, the action of unlocking the handle connecting plate 200 to the brake shaft 110 and then driving the handle connecting plate and the brake shaft can be realized.

An important feature of the present invention is: there is a certain idle stroke before the handle coupling plate 200 drives the brake shaft 110 to rotate, and the unlocking stroke of the locking pin 300 is designed to be smaller than the idle stroke. That is, the handle connecting plate 200 idles relative to the brake shaft 110 during a period from the initial unlocking state to the completion of unlocking, and drives the unlocking part 220 to drive the lock pin 300 to move away from the lock disc 400 against the resistance of the elasticity 320 until the locking part 303 completely exits from a lock groove 430 on the lock disc 400, so as to unlock the circumferential rotation of the lock disc 400; after the unlocking is completed, the brake shaft 110 is rotated in synchronization with the handle link plate 200 and the locking disc 400.

Claims

1. The utility model provides a manual high device locking mechanism of transferring of car seat, includes brake part and handle connecting plate, brake part has a brake axle, with the position that the handle connecting plate is connected is provided with a spline, its characterized in that: further comprising:

2. The locking mechanism of manual high-adjusting device for car seat as claimed in claim 1, wherein at least one unlocking maintaining portion is further provided on the handle connecting plate, the unlocking maintaining portion is connected to the unlocking portion, and the unlocking maintaining portion maintains the lock pin in the unlocked state after the lock pin is unlocked.

3. The locking mechanism of a manual high-adjustment device for a car seat as claimed in claim 2, wherein when there are at least two unlocking maintaining parts, the two unlocking maintaining parts are symmetrically distributed around the unlocking part.

4. The manual high-adjustment device locking mechanism of the automobile seat as claimed in claim 2, wherein each locking portion of the lock pin is divided into at least two parts, namely a first locking portion and at least one second locking portion, wherein the first locking portion is unlocked by being matched with the unlocking portion on the handle connecting plate and is unlocked and retained by being matched with the unlocking and retaining portion after being unlocked, and the second locking portion is locked by being matched with the locking groove on the locking plate.

5. The manual high-lift device locking mechanism of claim 4, wherein said first locking portion and said second locking portion have the same or different structural characteristics.

6. The manual high-adjustment device locking mechanism for the vehicle seat as claimed in claim 4, wherein the first locking portion has a shape that is coupled to the unlocking portion; the second locking portion is shaped to be in a mutually coupled relationship with the locking groove.

7. The manual vehicle seat up-recliner locking mechanism of claim 6 wherein the at least one second locking portion is received in the at least one locking groove of the locking plate when locked.

8. The locking mechanism of claim 7, wherein the number of the second locking portions is two, and when the locking mechanism is locked, the two second locking portions are simultaneously received in the two locking grooves of the locking plate.

9. The manual high-adjustment device locking mechanism for automobile seats as claimed in claim 2, wherein the locking groove is disposed on the outer periphery of the locking disc adjacent to the locking pin, and the unlocking portion and the unlocking maintaining portion are disposed on the outer periphery of the handle connecting plate adjacent to the locking pin.

10. The manual high-adjustment device locking mechanism for automobile seats as claimed in claim 9, wherein the unlocking maintaining portion is a segment of a convex arc disposed on the outer periphery of the handle connecting plate, the unlocking portion is recessed in the convex arc, and the locking portion of the lock pin is received in the unlocking portion when the lock pin is in the locked state.

11. The manual high-adjustment device locking mechanism for the vehicle seat as claimed in claim 10, wherein the unlocking part is a groove, the locking part of the lock pin is received in the groove and contacts with the groove wall of the groove when the lock pin is in the locked state, and the groove wall of the groove pushes the locking part to move in the unlocking direction until the locking part exits the groove during unlocking.

12. The locking mechanism for the manual height adjusting device of the automobile seat as claimed in claim 11, wherein the groove is a V-shaped groove or a U-shaped groove.

13. The locking mechanism of claim 1, wherein the locking plate has a plurality of locking grooves spaced around the outer periphery of the locking plate.

14. The locking mechanism of manual high-adjusting device for car seat as claimed in claim 13, wherein the locking angle between two adjacent locking grooves is less than 20 °.

15. The locking mechanism of the manual height adjusting device for the automobile seat as claimed in claim 14, wherein 18 to 20 locking grooves are uniformly distributed at intervals on the outer periphery of the locking disc. In addition, the number of the locking grooves can be adjusted according to the requirements of customers.

16. The locking mechanism for a manual height adjusting device of an automobile seat as claimed in claim 13, wherein the locking groove is rectangular and trapezoidal.

17. The manual reclining device locking mechanism of a car seat as set forth in claim 16, wherein when said locking groove is trapezoidal, said locking surfaces on both sides of said locking groove are symmetrically disposed with respect to a central plane of said locking groove, and an angle α between each locking surface and said central plane is less than 5.7 °.

18. The manual reclining device locking mechanism of claim 1, wherein the linear sliding direction of the lock pin is parallel to a radial line of the lock plate, or a small angle is formed between the linear sliding direction of the lock pin and the radial line of the lock plate.

19. The locking mechanism of manual high-adjusting device for car seat as claimed in claim 1, wherein a housing is provided on said brake member, and said lock pin is disposed on said housing in a linear sliding manner.

20. The manual high-adjustment device locking mechanism for the automobile seat as claimed in claim 19, wherein a locking pin seat is provided on the housing, a locking pin hole is provided in the locking pin seat, and the locking pin is arranged in the locking pin hole in a linear sliding manner; and a limit screw and an elastic element for applying elasticity to the lock pin are also arranged in the lock pin hole, the limit screw is connected with the lock pin hole in a threaded mode or a press-fitting mode or a buckling mode, and the elastic element is arranged between the lock pin and the limit screw.

21. The locking mechanism of manual height adjusting device for car seat as claimed in claim 20, wherein said elastic element is selected from one or a combination of any two or more of metal, non-metal spring, rubber, polyurethane or other elastic elements.

22. The locking mechanism of manual height adjusting device for automobile seat as claimed in claim 20, wherein at least one first guiding plane is provided on the outer circumferential surface of the lock pin, and at least one second guiding plane is provided in the lock pin hole, and the first guiding plane is slidably engaged with the second guiding plane.