CN216761551U - Headrest release mechanism and car seat - Google Patents
Headrest release mechanism and car seat Download PDFInfo
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- CN216761551U CN216761551U CN202122500733.XU CN202122500733U CN216761551U CN 216761551 U CN216761551 U CN 216761551U CN 202122500733 U CN202122500733 U CN 202122500733U CN 216761551 U CN216761551 U CN 216761551U
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Abstract
The utility model discloses a headrest unlocking mechanism and an automobile seat, comprising: the sheet metal part is arranged at the top of the backrest framework, and the sheet metal part is provided with inserted rod holes for inserting a pair of headrest inserted rods at the bottom of a headrest; set up a pair of headrest guide pin bushing assembly on the sheet metal component, each headrest guide pin bushing assembly includes the inserted bar guide pin bushing, set up on the inserted bar guide pin and supply headrest inserted bar male inserted bar through-hole, be provided with on an at least inserted bar guide pin with locking groove complex unblock part on the headrest inserted bar, when the headrest is in the locking state, the locking end of unblock part with locking groove cooperation on the headrest inserted bar is in order to restrict the axial motion of headrest inserted bar, and when the headrest needs the unblock, external force is applyed the unblock of unblock part triggers to serve, makes the locking end of unblock part with locking groove separation on the headrest inserted bar is in order to relieve the restriction to headrest inserted bar axial motion.
Description
Technical Field
The utility model relates to the technical field of seats, in particular to a headrest unlocking mechanism and an automobile seat.
Background
The automobile seat mainly comprises a seat body and a headrest. The seat body is used for allowing a driver to sit, and the headrest is arranged at the upper end of the seat body and used for supporting the head of the driver. The headrest can play a role in protecting the neck of a driver and passengers in collision. In order to adapt to the heights of different drivers and passengers, the automobile seat has the function of adjusting the headrest up and down.
Usually, still be provided with two slide bars between seat body and the headrest, the one end and the seat body fixed connection of slide bar, the other end and the headrest sliding connection of slide bar. The height of the headrest is adjusted by sliding the headrest up and down along the slide rod.
In order to enable the headrest to be fixed to a corresponding height, the vehicle seat further comprises a lock device which can be switched between a locked state and an unlocked state. When the lock device is switched to a locking state, the slide rod can be axially locked, and the headrest is prevented from moving up and down; the lock device can unlock the slide rod when being switched to the unlocking state, so that the headrest can move up and down.
The existing lock device is generally installed on the headrest, so that the structural complexity of the headrest is increased, the volume of the headrest is also increased, and the front-row headrest cannot be designed to be light and thin.
For this reason, there is a chinese patent No. CN209441258U which discloses a car and a car seat thereof, wherein a lock device is fixedly mounted on a seat body, but the structure of the car is complicated, and the lock device is unlocked by horizontally moving a first sliding member and a second sliding member, which requires a large horizontal space, which is not favorable for designing the car seat.
SUMMERY OF THE UTILITY MODEL
One of the technical problems to be solved by the present invention is to provide a headrest unlocking mechanism, which has a simple structure and solves the problem that front row headrests cannot be designed to be light and thin. The second technical problem to be solved by the present invention is to provide a car seat to overcome the disadvantages of the prior art.
In order to achieve the above object of the present invention, a headrest unlocking mechanism includes:
the sheet metal part is arranged at the top of the backrest framework, and the sheet metal part is provided with inserting rod holes for inserting a pair of headrest inserting rods at the bottom of a headrest;
set up a pair of headrest guide pin bushing assembly on the sheet metal component, each headrest guide pin bushing assembly includes the inserted bar guide pin bushing, set up on the inserted bar guide pin and supply headrest inserted bar male inserted bar through-hole, be provided with on an at least inserted bar guide pin with locking groove complex unblock part on the headrest inserted bar, when the headrest is in the locking state, the locking end of unblock part with locking groove cooperation on the headrest inserted bar is in order to restrict the axial motion of headrest inserted bar, and when the headrest needs the unblock, external force is applyed the unblock of unblock part triggers to serve, makes the locking end of unblock part with locking groove separation on the headrest inserted bar is in order to relieve the restriction to headrest inserted bar axial motion.
In a preferred embodiment of the present invention, the unlocking means includes:
the vertical guide through hole is arranged at one side of the inserted rod through hole, and a radial yielding part is arranged at one side of the vertical guide through hole;
a horizontal groove is formed in the lower portion of the vertical guide through hole and penetrates through the inserted rod through hole;
the locking push plate is arranged in the horizontal groove in a sliding mode, the locking push plate is connected with the inner wall of the horizontal groove through a reset elastic piece, a locking hole for the insertion rod to pass through is formed in the position, located in the insertion rod through hole, of the locking push plate, and a locking pin used as a locking end of the unlocking component is arranged on the inner wall of the locking hole;
the unlocking guide piece is arranged on one side of the upper part of the vertical guide through hole and is used as the unlocking trigger end;
the upper end of the guide post is connected with the unlocking guide piece, and the lower end of the guide post is connected with the locking push plate;
when the headrest is in the locking state, under the effort of the elastic component that resets, the locking round pin with the axial motion of locking groove cooperation in order to restrict the headrest inserted bar on the headrest inserted bar, when the headrest needs the unblock, the external force level is exerted on the unblock guide for the guide post to radially let position portion horizontal migration, drive horizontal migration behind the effort of the elastic component that resets is overcome to the locking push pedal makes the locking round pin with the separation of locking groove on the headrest inserted bar is in order to relieve the restriction to headrest inserted bar axial motion.
In a preferred embodiment of the present invention, upper horizontal limiting grooves for allowing the two ends of the upper stop pin to move are formed on both sides of the upper portion of the vertical guide through hole, and lower horizontal limiting grooves for allowing the two ends of the lower stop pin to move are formed on both sides of the horizontal groove.
In a preferred embodiment of the present invention, the unlocking means includes:
the vertical guide through hole is arranged on one side of the inserted rod through hole;
a horizontal groove is formed in the lower portion of the vertical guide through hole and penetrates through the inserted rod through hole;
the locking push plate is arranged in the horizontal groove in a sliding mode, the locking push plate is connected with the inner wall of the horizontal groove through a reset elastic piece, a locking hole for the insertion rod to pass through is formed in the position, located in the insertion rod through hole, of the locking push plate, and a locking pin used as a locking end of the unlocking component is arranged on the inner wall of the locking hole;
the unlocking guide piece is arranged on one side of the upper part of the vertical guide through hole and is used as the unlocking trigger end;
the guide post is arranged in the vertical guide through hole, the outer contour of the guide post is matched with the inner diameter of the vertical guide through hole, so that the guide post can only move in the vertical direction in the vertical guide through hole, an upper inclined groove is arranged at the upper end of the guide post along the radial direction, an upper pin hole corresponding to the upper inclined groove is arranged on the unlocking guide piece, the guide post is connected with the unlocking guide piece through an upper stop pin penetrating through the upper inclined groove and the upper pin hole, the axial direction of the upper stop pin is perpendicular to the movement direction of the locking push plate, upper horizontal limiting grooves for moving two ends of the upper stop pin are arranged on two sides of the upper portion of the vertical guide through hole, a lower inclined groove is arranged at the lower end of the guide post along the radial direction, a lower pin hole corresponding to the lower inclined groove is arranged on the locking push plate, and a lower inclined groove is arranged between the guide post and the locking push plate through penetrating through the lower inclined groove, The lower stop pin of the lower pin hole is connected, the axial direction of the lower stop pin is vertical to the movement direction of the locking push plate, and lower horizontal limiting grooves for the movement of two ends of the lower stop pin are arranged on two sides of the horizontal groove;
when the headrest is in a locking state, under the action force of the elastic resetting piece, the locking pin is matched with the locking groove in the headrest inserted bar to limit the axial movement of the headrest inserted bar, when the headrest needs to be unlocked, an external force level is applied to the unlocking guide piece to drive the upper stop pin to move horizontally under the action of the vertical guide through hole, the upper chute and the upper horizontal limiting groove, so that the guide post moves along the first direction of the vertical direction.
In a preferred embodiment of the present invention, the guide post comprises a pair of guide plates arranged in parallel and spaced apart and a reinforcing rib connected to the middle of the two guide plates.
In a preferred embodiment of the present invention, a reset elastic member guide post matched with the reset elastic member is disposed at one end of the locking push plate away from the unlocking guide member, one end of the reset elastic member is connected to the inner wall of the horizontal groove, and the other end of the reset elastic member is connected to the locking push plate.
In a preferred embodiment of the present invention, the unlocking guide is connected to a headrest unlocking button.
In a preferred embodiment of the utility model, the bottom of the inserted link guide sleeve is further provided with a backrest frame connecting part inserted into the top of the backrest frame.
In a preferred embodiment of the utility model, the sheet metal part comprises a front sheet metal and a rear sheet metal, the tops of the front sheet metal and the rear sheet metal are respectively provided with a horizontal folded edge, the horizontal folded edge is provided with the insertion rod hole, the pair of headrest guide sleeve assemblies are arranged between the front sheet metal and the rear sheet metal, the bottom of the rear sheet metal is provided with a connecting edge connected with the top of the backrest framework, and the bottom of the front sheet metal is provided with an insertion column connected with the top of the backrest framework.
In a preferred embodiment of the utility model, a sheet metal part connecting part connected with the front sheet metal and/or the rear sheet metal is arranged on the insertion rod guide sleeve.
In a preferred embodiment of the utility model, the sheet metal part is provided with a cover on its outer circumference.
The utility model further provides an automobile seat which comprises the headrest unlocking mechanism in any technical scheme.
Due to the adoption of the technical scheme, the headrest unlocking mechanism is simple in structure, the problem that the front row headrest cannot be designed to be light and thin is solved, and the front row headrest can be designed conventionally and accords with the future trend. And the headrest unlocking mechanism is arranged at the top of the backrest framework, so that the thickness of the top of the backrest is not limited to the foaming process any more, and the thickness of the foaming process of 30mm can be reduced at least. In addition, the utility model can also utilize the mode that the guide post moves in the vertical direction to ensure that the locking push plate moves horizontally to achieve the unlocking purpose, does not increase the horizontal space at the top of the backrest and is beneficial to the design of the automobile seat.
Drawings
Fig. 1 is a schematic structural view of a headrest unlocking mechanism of the present invention applied to a headrest of a conventional design.
Fig. 2 is a schematic structural view of the headrest unlocking mechanism applied to an L-shaped headrest.
Fig. 3 is an exploded view of the structure of the headrest unlocking mechanism of the present invention.
Fig. 4 is a schematic structural view of the backrest frame shown in fig. 3.
Fig. 5 is a second schematic structural view of the backrest frame in fig. 3.
Fig. 6 is a schematic structural view of a pair of the plunger guide sleeves shown in fig. 3.
Fig. 7 is a second schematic view of the pair of plunger guides shown in fig. 3.
Fig. 8 is one of the structural diagrams of the front sheet metal in fig. 3.
Fig. 9 is a second schematic structural diagram of the front sheet metal in fig. 3.
Fig. 10 is one of the structural schematic diagrams of the rear sheet metal in fig. 3.
Fig. 11 is a second schematic structural diagram of the rear sheet metal in fig. 3.
Fig. 12 is a schematic view of the cover of fig. 3.
FIG. 13 is a second schematic view of the cover of FIG. 3.
Fig. 14 is a schematic structural view of the headrest of fig. 3.
Fig. 15 is a second schematic structural view of the headrest in fig. 3.
FIG. 16 is a schematic view of the assembly of the bayonet guide of the present invention.
Figure 17 is a schematic view of the structure of the locking push plate of figure 16.
Fig. 18 is a sectional view taken along line a-a in fig. 17.
FIG. 19 is a second illustration of the assembly of the guide sleeve of the present invention.
FIG. 20 is a schematic view of the lower stop pin of FIG. 19.
Fig. 21 is a cross-sectional view of fig. 19 assembled.
Fig. 22 is a third illustration of the assembly of the guide sleeve of the present invention.
Fig. 23 is a schematic structural view of the unlocking guide of fig. 22.
Fig. 24 is a sectional view taken along line a-a in fig. 23.
FIG. 25 is a schematic view of the lower stop pin of FIG. 23.
Fig. 26 is a cross-sectional view of fig. 22 assembled.
Fig. 27 is a structural diagram illustrating a locked state according to an embodiment of the present invention.
Fig. 28 is a structural diagram illustrating an unlocked state according to an embodiment of the present invention.
Fig. 29 is a structural diagram of a locked state according to another embodiment of the present invention.
Fig. 30 is a structural diagram illustrating an unlocked state according to another embodiment of the present invention.
Fig. 31 is a cross-sectional view of fig. 29.
Fig. 32 is a cross-sectional view of fig. 30.
Fig. 33 is a schematic view showing the structure of fig. 31 after insertion of the headrest stay.
Fig. 34 is an enlarged view at I of fig. 33.
Fig. 35 is a schematic view showing the headrest plug rod of fig. 32 inserted.
Fig. 36 is an enlarged view at I of fig. 35.
Fig. 37 is a schematic view of the structure of the headrest of the seat at the lowest position.
Fig. 38 is a schematic view of the headrest of the seat in the use position.
Detailed Description
The utility model is further described below in conjunction with the appended drawings and detailed description.
Example 1
A headrest unlocking mechanism as described with reference to figures 1 to 26 and 29 to 38. The headrest unlocking mechanism can be applied to a front row headrest of conventional design, in conjunction with fig. 1, in which the headrest 10a is mounted on top of the backrest 20a, and the headrest 10a can assume a high height. The headrest unlocking mechanism can also be applied to a light and thin L-shaped headrest, and in combination with fig. 2, the headrest 10b is installed at the top of the backrest 20b, the headrest 10b can be short in height, and the backrest 20b is thick, so that the thickness of the top of the backrest is not limited to the foaming process, and the thickness of the foaming process can be reduced by at least 30 mm.
The headrest unlocking mechanism 300 includes a sheet metal part 340 and a pair of headrest guide bush assemblies. The sheet metal part 340 is arranged at the top of the backrest frame 100, and the sheet metal part 340 is provided with a plug rod hole for inserting the pair of headrest plug rods 210 at the bottom of the headrest 200. In this embodiment, each headrest guide sleeve assembly includes the inserted link guide sleeve 310, the sheet metal part 340 includes the front sheet metal 320 and the rear sheet metal 330, the top of the front sheet metal 320 and the top of the rear sheet metal 330 are respectively provided with the horizontal folding edges 321 and 331, and the horizontal folding edges 321 and 331 are provided with the inserted link holes 322 and 332. The pair of the inserted link guide sleeves 310 are arranged between the front metal plate 320 and the rear metal plate 330, the side edges of the front metal plate 320 and the rear metal plate 330 are provided with corresponding connecting butt joint edges 324 and 334, the bottom of the rear metal plate 330 is provided with a connecting edge 333 connected with a cross beam 110 at the top of the backrest framework 100, the cross beam 110 is provided with a mounting hole 112 corresponding to the connecting edge 333, the bottom of the front metal plate 320 is provided with an inserted link column 323 connected with the cross beam 110 at the top of the backrest framework 100, the cross beam 110 is provided with an inserted link hole 113 corresponding to the inserted link column 323, and the bottom of the pair of the inserted link guide sleeves 310 is provided with a backrest framework connecting part 313 inserted into the inserted link 111 on the cross beam 110. The inserting rod guide sleeve 310 is provided with a sheet metal part connecting part 314 connected with the rear sheet metal 330. The periphery of back panel beating 330 is provided with plastic shroud 350, is provided with back panel beating tie point 353, 354 on the plastic shroud 350, and one side of plastic shroud 350 is provided with button hole 352, and the top of plastic shroud 350 is provided with inserted bar hole 351.
The insert bar guide sleeves 310 are provided with insert bar through holes 311 for inserting the headrest insert bars 210, and at least one insert bar guide sleeve 310 is provided with an unlocking part 312 matched with the locking grooves 211 on the headrest insert bars 210. When bidirectional unlocking is required, an unlocking part 312 which is matched with the locking groove 211 on the headrest insertion rod 210 can be arranged on each insertion rod guide sleeve 310; when only one-way unlocking is required, the unlocking member 312 which is matched with the locking groove 211 on the headrest inserting rod 210 can be arranged on only one of the inserting rod guide sleeves 310. When the headrest 200 is in the locked state, the locking end of the unlocking member 213 cooperates with the locking groove 211 on the headrest insert rod 210 to limit the axial movement of the headrest insert rod 210, and when the headrest 200 needs to be unlocked, an external force is applied to the unlocking triggering end of the unlocking member 213, so that the locking end of the unlocking member 213 is separated from the locking groove 211 on the headrest insert rod 210 to release the limitation of the axial movement of the headrest insert rod.
Preferably, referring to fig. 16 to 22, the unlocking member 312 in this embodiment includes a vertical guide through hole 3121, a horizontal groove 3122, a locking push plate 3123, a guide post 3124, a lower stop pin 3125, a return elastic member 3126, an unlocking guide 3127, and an upper stop pin 3128. The vertical guide through hole 3121 is provided at the side of the plunger through hole 311. The horizontal groove 3122 penetrates the lower portion of the connecting plunger through-hole 311 and the vertical guide through-hole 3121.
Locking push plate 3123 slides and sets up in horizontal groove 3122, and locking push plate 3123 is connected through the elastic component 3126 that resets with the inner wall of horizontal groove 3122, and the one end that unlocking guide 3127 was kept away from to locking push plate 3123 is provided with the elastic component guide column 3123c that resets with the elastic component 3126 complex that resets, and the elastic component 3126 one end that resets is connected at the horizontal inslot wall, and the other end is connected on locking push plate 3123. A locking hole 3123a through which the insert lever 210 passes is provided at a portion of the locking push plate 3123 within the insert lever through hole 311, and a locking pin 3123b serving as a locking end of the unlocking member is provided at an inner wall of the locking hole 3123 a. In the embodiment, when the headrest is adjusted upward, the headrest is directly pulled up, and when the headrest is adjusted downward, unlocking needs to be triggered, so that the upper groove surface of the locking groove 211 on the headrest insertion rod 210 is a horizontal surface, the side groove surface is an inclined groove surface inclined outward from top to bottom, and the locking push plate 3123 has a lower pin hole 3123d through which the lower stop pin 3125 passes.
The unlocking guide 3127 is a T-shaped slider, the unlocking guide 3127 is horizontally slidably disposed at one side of an upper portion of the vertical guide through hole 3121, the unlocking guide 3127 serves as an unlocking trigger end, and the unlocking guide 3127 has an upper pin hole 3127a through which the upper stop pin 3128 passes. The unlocking guide 3127 is connected with the headrest unlocking button 360.
The guide post 3124 is disposed within the vertical guide through hole 3121, and an outer contour of the guide post 3124 is adapted to an inner diameter of the vertical guide through hole 3121, so that the guide post 3124 can move only in a vertical direction within the vertical guide through hole 3121. The guide column 3124 comprises a pair of guide plates 3124a arranged in parallel at intervals and a reinforcing rib 3124b connected to the middle parts of the two guide plates 3124a, the upper end of the guide column 3124 is provided with an upper inclined groove 3124c along the radial direction, the upper end of the guide column 3124 is connected with the unlocking guide 3127 through an upper stop pin 3128 penetrating through the upper inclined groove 3124c and the upper pin hole 3127a, and the middle part of the upper stop pin 3128 is provided with a friction line 3128a for convenient positioning. The axial direction of the upper stop pin 3128 is perpendicular to the movement direction of the locking push plate 3123, and upper horizontal limiting grooves 3121b for the movement of both ends of the upper stop pin 3128 are provided at both sides of the upper portion of the vertical guide through hole 3121. The lower end of the guide column 3124 is provided with a lower inclined groove 3124d along the radial direction, the lower end of the guide column 3124 is connected with the locking push plate 3123 through a lower stop pin 3125 penetrating through the lower inclined groove 3124d and the pin hole 3123d, the middle part of the lower stop pin 3125 is provided with a friction line 3125a for convenient positioning, the axial direction of the lower stop pin 3125 is perpendicular to the movement direction of the locking push plate 3123, and the two sides of the horizontal groove 3122 are provided with lower horizontal limit grooves 3122a for the movement of the two ends of the lower stop pin 3125.
The working principle of the embodiment is as follows:
when the headrest 200 is in the locked state, the locking pin 3123b is engaged with the locking groove 211 on the headrest insert lever 210 by the force of the return elastic member 3126 to restrict the axial movement of the headrest insert lever 210. When the headrest needs to be unlocked, an external force is horizontally applied to the headrest unlocking button 360 and further acts on the unlocking guide 3127 to drive the upper stop pin 3128 to move horizontally, under the action of the vertical guide through hole 3121, the upper inclined groove 3124c and the upper horizontal stop groove 3121b, the guide column 3124 moves in the first direction of the vertical direction (the first direction of the embodiment is the upward direction), and due to the action of the lower inclined groove 3124d and the lower horizontal stop groove 3122a, when the guide column 3124 moves in the first direction, the guide column 3123 drives the locking thrust plate 3123 to move horizontally after overcoming the acting force of the return elastic member 3126, so that the locking pin 3123b is separated from the locking groove 211 on the headrest insertion rod 210 to release the limitation on the axial movement of the headrest insertion rod 210. When the external force disappears, under the action of the return elastic member 3126, the locking push plate 3123 moves to the return direction, and drives the locking pin 3123b to be inserted into the locking groove 211 on the headrest insertion rod 210 to continue to reach the locking state, and under the action of the lower inclined groove 3124d and the lower horizontal limiting groove 3122a, the guide column 3124 moves in the second direction of the vertical direction (the second direction of the embodiment is the downward direction), and under the action of the vertical guide through hole 3121, the upper inclined groove 3124c and the upper horizontal limiting groove 3121b, the unlocking guide 3127 moves to the return direction, so that the entire unlocking member returns to the initial state. The mode that this embodiment utilized the vertical direction motion of guide post 3124 makes locking push plate 3123 horizontal motion reach the unblock purpose, can not increase the horizontal space at back top, does benefit to car seat's design.
Example 2
Referring to the drawings of embodiment 1 in conjunction with fig. 27 and 28, the present embodiment has substantially the same structure as embodiment 1 except that a radial relief portion 3121a is provided at one side of the vertical guide through hole 3121 of the present embodiment so that the guide post 3124 can move in a horizontal direction at a distance within the vertical guide through hole 3121.
The working principle of the embodiment is as follows:
when the headrest 200 is in the locked state, the locking pin 3123b is engaged with the locking groove 211 on the headrest insert lever 210 by the force of the return elastic member 3126 to restrict the axial movement of the headrest insert lever 210. When the headrest 200 needs to be unlocked, an external force is horizontally applied to the headrest unlocking button 360 and further acts on the unlocking guide 3127, so that the guide column 3124 horizontally moves toward the radial seating portion 3121a, the guide column 3124 drives the locking push plate 3123 to horizontally move after overcoming the acting force of the return elastic member 3126, and the locking pin 3123b is separated from the locking groove 211 on the headrest insertion lever 210 to release the limitation on the axial movement of the headrest insertion lever 210. When the external force disappears, under the action of the return elastic piece 3126, the locking push plate 3123 moves towards the return direction, and drives the locking pin 3123b to be inserted into the locking groove 211 on the headrest insertion rod 210 to continue to reach the locking state, and the movement of the locking push plate 3123 drives the guide post 3124 to move towards the direction far away from the radial abdicating portion 3121a, and the unlocking guide 3127 also moves towards the return direction, so that the whole unlocking component returns to the initial state.
The present invention also includes a vehicle seat that includes the headrest unlocking mechanism 300 described above.
It should be understood by those skilled in the art that the foregoing detailed description is only a detailed description of the embodiments of the present invention, and should not be taken as limiting the scope of the utility model as claimed. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention as defined by the appended claims.
Claims (12)
1. Headrest release mechanism, its characterized in that includes:
the sheet metal part is arranged at the top of the backrest framework, and the sheet metal part is provided with inserting rod holes for inserting a pair of headrest inserting rods at the bottom of a headrest;
set up a pair of headrest guide pin bushing assembly on the sheet metal component, each headrest guide pin bushing assembly includes the inserted bar guide pin bushing, set up on the inserted bar guide pin and supply headrest inserted bar male inserted bar through-hole, be provided with on an at least inserted bar guide pin with locking groove complex unblock part on the headrest inserted bar, when the headrest is in the locking state, the locking end of unblock part with locking groove cooperation on the headrest inserted bar is in order to restrict the axial motion of headrest inserted bar, and when the headrest needs the unblock, external force is applyed the unblock of unblock part triggers to serve, makes the locking end of unblock part with locking groove separation on the headrest inserted bar is in order to relieve the restriction to headrest inserted bar axial motion.
2. The headrest unlocking mechanism according to claim 1, wherein the unlocking member includes:
the vertical guide through hole is arranged at one side of the inserted rod through hole, and a radial yielding part is arranged at one side of the vertical guide through hole;
a horizontal groove is formed in the lower portion of the vertical guide through hole and penetrates through the inserted rod through hole;
the locking push plate is arranged in the horizontal groove in a sliding mode, the locking push plate is connected with the inner wall of the horizontal groove through a reset elastic piece, a locking hole for the insertion rod to pass through is formed in the part, located in the insertion rod through hole, of the locking push plate, and a locking pin used as a locking end of the unlocking component is arranged on the inner wall of the locking hole;
the unlocking guide piece is arranged on one side of the upper part of the vertical guide through hole and is used as the unlocking trigger end;
the guide post is arranged in the vertical guide through hole, the upper end of the guide post is connected with the unlocking guide piece, and the lower end of the guide post is connected with the locking push plate;
when the headrest is in a locking state, under the action force of the reset elastic piece, the locking pin is matched with the locking groove in the headrest inserted rod to limit the axial movement of the headrest inserted rod, when the headrest needs to be unlocked, the external force level is applied to the unlocking guide piece, so that the guide post moves horizontally to the radial displacement part, the locking push plate is driven to move horizontally after overcoming the action force of the reset elastic piece, and the locking pin is separated from the locking groove in the headrest inserted rod to relieve the limitation on the axial movement of the headrest inserted rod.
3. The headrest unlocking mechanism as claimed in claim 2, wherein upper horizontal limiting grooves for movement of both ends of the upper stop pin are provided on both sides of the upper portion of the vertical guide through-hole, and lower horizontal limiting grooves for movement of both ends of the lower stop pin are provided on both sides of the horizontal groove.
4. The headrest unlocking mechanism according to claim 1, wherein the unlocking member includes:
the vertical guide through hole is arranged on one side of the inserted rod through hole;
a horizontal groove is formed in the lower portion of the vertical guide through hole and penetrates through the inserted rod through hole;
the locking push plate is arranged in the horizontal groove in a sliding mode, the locking push plate is connected with the inner wall of the horizontal groove through a reset elastic piece, a locking hole for the insertion rod to pass through is formed in the position, located in the insertion rod through hole, of the locking push plate, and a locking pin used as a locking end of the unlocking component is arranged on the inner wall of the locking hole;
the unlocking guide piece is arranged on one side of the upper part of the vertical guide through hole and is used as the unlocking trigger end;
the guide post is arranged in the vertical guide through hole, the outer contour of the guide post is matched with the inner diameter of the vertical guide through hole, so that the guide post can only move in the vertical direction in the vertical guide through hole, an upper inclined groove is arranged at the upper end of the guide post along the radial direction, an upper pin hole corresponding to the upper inclined groove is arranged on the unlocking guide piece, the guide post is connected with the unlocking guide piece through an upper stop pin penetrating through the upper inclined groove and the upper pin hole, the axial direction of the upper stop pin is vertical to the movement direction of the locking push plate, upper horizontal limiting grooves for moving two ends of the upper stop pin are arranged on two sides of the upper portion of the vertical guide through hole, a lower inclined groove is arranged at the lower end of the guide post along the radial direction, a lower pin hole corresponding to the lower inclined groove is arranged on the locking push plate, and a lower pin hole corresponding to the lower inclined groove is arranged between the guide post and the locking push plate through penetrating through the lower inclined groove, The lower stop pin of the lower pin hole is connected, the axial direction of the lower stop pin is vertical to the movement direction of the locking push plate, and lower horizontal limiting grooves for the movement of two ends of the lower stop pin are arranged on two sides of the horizontal groove;
when the headrest is in a locking state, under the action force of the elastic resetting piece, the locking pin is matched with the locking groove in the headrest inserted bar to limit the axial movement of the headrest inserted bar, when the headrest needs to be unlocked, an external force level is applied to the unlocking guide piece to drive the upper stop pin to move horizontally under the action of the vertical guide through hole, the upper chute and the upper horizontal limiting groove, so that the guide post moves along the first direction of the vertical direction.
5. The headrest unlocking mechanism as claimed in claim 2, 3 or 4, wherein the guide post includes a pair of guide plates disposed in parallel and spaced apart from each other and a reinforcing rib connected to a middle portion of the guide plates.
6. The headrest unlocking mechanism as claimed in claim 2, 3 or 4, wherein a return elastic member guide post matched with the return elastic member is disposed at one end of the locking push plate away from the unlocking guide member, one end of the return elastic member is connected to the inner wall of the horizontal groove, and the other end of the return elastic member is connected to the locking push plate.
7. The headrest unlocking mechanism as claimed in claim 2, 3 or 4, wherein the unlocking guide is connected to a headrest unlocking button.
8. The headrest unlocking mechanism as claimed in claim 2, 3 or 4, wherein the bottom of the plunger guide is further provided with a backrest frame connecting part inserted into the top of the backrest frame.
9. The headrest unlocking mechanism according to claim 2, 3 or 4, wherein the sheet metal part comprises a front sheet metal and a rear sheet metal, horizontal folded edges are respectively arranged at the tops of the front sheet metal and the rear sheet metal, the inserting rod holes are formed in the horizontal folded edges, the headrest guide sleeve assemblies are arranged between the front sheet metal and the rear sheet metal, a connecting edge connected with the top of the backrest framework is arranged at the bottom of the rear sheet metal, and an inserting column connected with the top of the backrest framework is arranged at the bottom of the front sheet metal.
10. The headrest unlocking mechanism according to claim 9, wherein the plunger guide sleeve is provided with a sheet metal part connecting portion connected with a front sheet metal and/or a rear sheet metal.
11. The headrest unlocking mechanism according to claim 2, 3 or 4, wherein a cover is provided on an outer periphery of the sheet metal member.
12. Vehicle seat, characterized in that it comprises a headrest unlocking mechanism as claimed in one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122500733.XU CN216761551U (en) | 2021-10-18 | 2021-10-18 | Headrest release mechanism and car seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122500733.XU CN216761551U (en) | 2021-10-18 | 2021-10-18 | Headrest release mechanism and car seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216761551U true CN216761551U (en) | 2022-06-17 |
Family
ID=81961898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122500733.XU Active CN216761551U (en) | 2021-10-18 | 2021-10-18 | Headrest release mechanism and car seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216761551U (en) |
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2021
- 2021-10-18 CN CN202122500733.XU patent/CN216761551U/en active Active
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