CN107054180B - Seat headrest with four-way adjusting function - Google Patents
Seat headrest with four-way adjusting function Download PDFInfo
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- CN107054180B CN107054180B CN201710175029.7A CN201710175029A CN107054180B CN 107054180 B CN107054180 B CN 107054180B CN 201710175029 A CN201710175029 A CN 201710175029A CN 107054180 B CN107054180 B CN 107054180B
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- headrest
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- driven
- pushing block
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- 210000000078 claw Anatomy 0.000 claims description 8
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a seat headrest with four-way adjusting function, comprising: a headrest rod having a first locking structure; the headrest shell is sleeved on the headrest rod and can slide back and forth and up and down along the headrest rod; a locking member provided on an inner wall of the headrest housing in the front-rear direction and having a second locking structure; a base body slidably mounted up and down on the headrest rod and slidably mounted back and forth on the locking member; a horizontal locking assembly located within the headrest housing for locking or unlocking the first locking structure; a clamping tongue which is elastically supported on the base body and is driven by the horizontal locking assembly to perform linear motion, and is used for locking or unlocking the second locking structure; and a button provided on the headrest housing for driving the horizontal locking assembly. Compact structure, good reliability, few parts, and can increase the lifting and fore-and-aft adjusting range of the headrest, and can unlock the fore-and-aft and up-and-down adjustment simultaneously by one key.
Description
Technical Field
The invention belongs to the technical field of automobile seats, and particularly relates to a seat headrest with a four-way adjusting function.
Background
With the popularization of automobiles in daily life, the safety and comfort of the automobiles are increasingly receiving attention from consumers. In order to support the head of the passenger, relieve the riding fatigue, or protect the head and neck of the passenger, according to different statures and body postures of different people, not only is the headrest required to be adjusted to be at a proper height, but also the headrest is required to be adjusted to be at a proper front-rear position so as to ensure the riding comfort and safety of the passenger. Thus, a four-way adjusting headrest having up-down and front-rear adjusting functions has been developed in the market.
The traditional four-way adjusting mechanism for the headrest of the four-way adjusting seat with the up-down and front-back adjusting functions is complex in structure, more in parts and low in reliability, and especially the components for locking the headrest for front-back adjustment are extremely complex in structure, and the unlocking stroke is long, so that the reliability is poor. And because the internal space of the headrest is limited and the volume of the headrest is larger, the arrangement space inside the headrest shell is occupied, the stroke of the up-down and front-back adjustment of the headrest is greatly limited, the range of the up-down and front-back adjustment of the headrest is smaller, the requirements of drivers and passengers with particularly high or smaller statures cannot be completely met, the application range is limited, and the practicability is insufficient. Solving the above problems is urgent.
Disclosure of Invention
In order to solve the technical problems, the invention provides the seat headrest with the four-way adjusting function, which realizes the up-down and front-back adjustment unlocking of the headrest, has simple and compact structure, convenient operation, good reliability and wide adjusting range.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a seat headrest with four-way regulatory function which characterized in that includes: a headrest rod having first locking structures arrayed in the up-down direction; the headrest shell is sleeved on the headrest rod and can slide back and forth and up and down along the headrest rod; a locking member provided on an inner wall of the headrest housing in a front-rear direction and having second locking structures arrayed in the front-rear direction; a base body which is slidably attached to the headrest rod up and down and is slidably attached to the lock member back and forth; a horizontal locking assembly located within the headrest housing for locking or unlocking the first locking structure; the clamping tongue is elastically supported on the base body and is driven by the horizontal locking assembly to perform linear motion so as to lock or unlock the second locking structure; and a button provided on the headrest housing for driving the horizontal locking assembly.
By adopting the structure, the horizontal locking component can be matched with the first locking structure, so that the upper and lower positions of the base body and the headrest shell are locked, and the clamping tongue can be matched with the second locking structure, so that the front and rear positions of the headrest shell are locked; in addition, the horizontal locking assembly is controlled by the button, so that the horizontal locking assembly is separated from the first locking structure of the headrest rod, the base body can slide up and down along the headrest rod, and then the headrest shell is driven to slide up and down along the headrest rod; the structure is simple and compact, the reliability is good, parts are few, the size of the device is small, the lifting and front-back adjusting range of the headrest can be effectively enlarged, the practicability is greatly improved, the structures of the clamping tongue and the second locking structure are simple and reliable, the unlocking stroke is short, the reliability of locking or unlocking in the front-back direction is greatly improved, and the adjustment of the front-back direction and the up-down direction of one key simultaneous unlocking is realized.
Preferably, the horizontal locking assembly comprises: the driving pushing block and the driven pushing block are slidably arranged in the base body and used for locking or unlocking the first locking structure, and the driving pushing block is connected with the button; and the rotor is respectively connected with the driving pushing block and the driven pushing block, and when the driving pushing block is close to or far away from the driven pushing block, the rotor drives the driven pushing block to be close to or far away from the driving pushing block. By adopting the structure, the outer end of the driving push block is pressed by the button, so that the driving push block moves towards the direction close to the driven push block, the driving push block pushes the rotor to rotate, and the driven push block is driven to move towards the direction close to the driving push block through the rotation of the rotor, so that the driving push block and the driven push block unlock the headrest rod simultaneously.
As preferable: the headrest rod is characterized in that a first mounting opening and a second mounting opening which are vertically communicated are formed in two ends of the base body, a first bayonet and a second bayonet are formed in one ends, far away from each other, of the driving push block and the driven push block respectively, and the first bayonet, the first mounting opening, the second bayonet and the second mounting opening are matched and locked or unlocked simultaneously. By adopting the structure, the active pushing block is pressed through the button, the relative positions of the first bayonet and the first mounting port and the relative positions of the second bayonet and the second mounting port are changed, so that the first bayonet and the second bayonet are not matched with the first mounting port and the second mounting port any more to lock the headrest rod, the headrest rod is movably positioned in the first mounting port and the second mounting port, and the position of the headrest of the seat can be adjusted up and down.
As preferable: the first bayonet is close to the first clamping component of strip column on the side wall of one side of driven ejector pad be equipped with strip column on the side wall of second bayonet is close to the initiative ejector pad, first locking structure is draw-in groove column structure, first clamping component and second clamping component can imbed in the first locking structure. By adopting the structure, the shapes of the first clamping part and the second clamping part are matched with the first locking structure of the headrest rod, and the first clamping part and the second clamping part can be embedded into the corresponding first locking structure by changing the relative positions between the first bayonet, the first mounting port and the second bayonet and the second mounting port, so that the upper position and the lower position of the headrest shell on the headrest rod can not be adjusted.
As preferable: the rotor is provided with a first connecting shaft and a second connecting shaft, the first connecting shaft is inserted into the first connecting hole and is provided with a gap, and the second connecting shaft is inserted into the second connecting hole and is provided with a gap. By adopting the structure, gaps are reserved between the first connecting shaft and the first connecting hole and between the second connecting shaft and the second connecting hole, so that the driving pushing block can do linear motion without deflection when pushing the rotor to rotate, the driven pushing block can do linear motion without deflection under the condition of being driven by the rotor, and the unlocking reliability is improved.
As preferable: the base body is provided with a mounting disc for supporting the rotor, the upper surface of the mounting disc is provided with a positioning protrusion, the rotor is provided with a central hole matched with the shaft hole of the positioning protrusion and two limiting clamping claws matched with the mounting disc, the mounting disc is embedded into the two limiting clamping claws, and the rotor can rotate along the positioning protrusion. By adopting the structure, the utility model has the advantages that,
as preferable: the driving device comprises a driving block, a clamping tongue, a driving groove, a driving arm and a driving shaft, wherein the driving groove is arranged at one side of the clamping tongue, which is close to the driving block, the top wall of the driving groove is provided with a first inclined surface extending downwards inwards from the notch, one end of the driving block, which is close to the rotor, is provided with a driving arm extending towards the clamping tongue along the horizontal direction, and the end part of the driving arm is embedded into the driving groove and is provided with a second inclined surface which is adaptive to the first inclined surface. By adopting the structure, the rotor can be reliably arranged on the mounting disc and smoothly rotate along the mounting disc, and then the driven pushing block is driven.
As preferable: the locking part comprises a locking seat body which is integrally formed with the headrest shell, a detachable locking sleeve is sleeved on the locking seat body, and the second locking structure is positioned on the locking sleeve. By adopting the structure, the locking sleeve with high requirements on hardness and wear resistance can be detached from the locking seat body, so that the locking sleeve and the locking seat body can be manufactured by different materials, the manufacturing cost is reduced, the locking sleeve can be replaced according to different structural requirements of the second locking structure, the whole locking sleeve does not need to be opened again, the universality is good, and the production cost is saved.
As preferable: the second locking structure is of a tooth-shaped structure, the lower end of the clamping tongue is provided with a tooth-shaped locking part which is matched with the second locking structure, and the locking part can be embedded into the second locking structure. By adopting the structure, the structure is simple and reliable, the unlocking can be conveniently realized while the reliable locking can be realized, and the front and back adjusting range of the headrest shell is large.
As preferable: the upper end of the clamping tongue is elastically supported on the base body through a first spring, and one end of the driving push block, which is close to the driven push block, is elastically supported on the base body through a second spring. By adopting the structure, the first spring continuously applies downward acting force to the clamping tongue, so that the clamping tongue can reliably lock the locking sleeve and can reset; the second spring continuously applies an outward acting force to the driving push block to enable the driving push block to reset and keep away from the driven push block, so that the driving push block and the driven push block lock the headrest rod.
Compared with the prior art, the invention has the beneficial effects that:
the seat headrest with the four-way adjusting function has the advantages of simple and compact structure, good reliability, few parts and small volume, can effectively enlarge the lifting and front-back adjusting range of the headrest, greatly improves the practicability, and realizes the adjustment of one-key simultaneous unlocking in the front-back direction and the up-down direction.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic illustration of the connection of the unlocking assembly to the headrest rear cover, headrest rod and locking member;
FIG. 4 is a schematic illustration of the connection of the unlocking assembly to the locking member and the headrest rear cover;
FIG. 5 is a schematic view of the internal structure of FIG. 4;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 7 is a schematic diagram of the connection of the unlocking assembly to the locking member;
FIG. 8 is a cross-sectional view taken along B-B of FIG. 7;
FIG. 9 is a schematic diagram of an unlocking assembly;
FIG. 10 is a schematic view of the internal structure of FIG. 9;
fig. 11 is a schematic diagram of the connection relationship among the driving push block, the driven push block, the rotor and the clamping tongue.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1 to 11, a seat headrest with four-way adjustment function includes a headrest rod 8, a headrest housing 7, a locking member 9, a base 1, a horizontal locking assembly, a latch 5 and a push button 6, wherein the horizontal locking assembly includes a driving push block 2, a driven push block 3 and a rotator 4. And, base member 1, initiative ejector pad 2, driven ejector pad 3, rotor 4 and block tongue 5 are the integrated into one piece respectively to improve self structural strength, be convenient for assemble. The base body 1, the driving pushing block 2, the driven pushing block 3, the rotor 4 and the clamping tongue 5 are all provided with lightening holes so as to meet the requirement of automobile lightening.
Referring to fig. 3, the headrest rod 8 has an n-shaped structure, and first locking structures 81 distributed in an array along the up-down direction are disposed on inner side walls of two side rods of the headrest rod 8, and the first locking structures 81 are in a clamping groove structure.
Referring to fig. 1 to 3, the headrest housing 7 includes a headrest front cover 72 and a headrest rear cover 71, the headrest front cover 72 and the headrest rear cover 71 are covered together to form a containing space, so that the upper end of the headrest rod 8 is located in the containing space, and the lower end of the headrest housing 7 has bar-shaped holes adapted to two side bars of the headrest rod 8, so that the headrest housing 7 can slide back and forth and up and down along the headrest rod 8, and the up and down and front and back positions of the headrest housing 7 are adjusted.
Referring to fig. 3 to 8, the locking member 9 includes a locking seat 92 and a locking sleeve 93, and the locking seat 92 is of a hollow structure and is integrally formed with the headrest housing 7. The locking sleeve 93 is detachably sleeved on the locking base 92, and the locking sleeve 93 is provided with second locking structures 91 which are distributed in parallel in the front-rear direction. Specifically, the second locking structures 91 are tooth-shaped protrusions, the outer surface of the upper portion of the locking seat 92 is provided with a countersink 94 extending along the axial direction of the locking seat, the second locking structures 91 are all located in the countersink 94, and the axial direction of the second locking structures 91 is perpendicular to the axial direction of the locking sleeve 93, so that locking reliability is improved. The inner surface of the locking sleeve 93 is provided with a convex portion 931 at a position corresponding to the sinking groove 94, the locking base 92 is provided with a concave portion 921 corresponding to the convex portion 931, the position of the concave portion 921 corresponds to the position of the convex portion 931, and the convex portion 931 is embedded into the concave portion 921, so that the reliability of the locking sleeve 93 mounted on the locking base 92 is ensured. In addition, the space between the adjacent second locking structures 91 of the locking sleeve 93 is designed according to actual requirements, so that when the space between the second locking structures 91 is changed for products of different models, the whole headrest back cover 71 is not required to be opened again, only the locking sleeve 93 is required to be replaced, moreover, the locking sleeve 93 is made of POM plastic, the wear rate of the POM plastic is smaller than that of the locking base 92, the locking sleeve 93 has the characteristics of high hardness, high rigidity and high wear resistance, and meanwhile, the self-lubricating property is realized, abnormal noise is avoided, and the headrest back cover 71 and the locking base 92 can be made of other relatively cheap materials, so that the production cost is effectively reduced.
Referring to fig. 1 to 10, the base 1 has a first mounting opening 13 and a second mounting opening 14 that are vertically penetrated, and two guide holes 12 that are vertically penetrated, wherein the headrest rod 8 of the headrest of the seat passes through the first mounting opening 13 and the second mounting opening 14, respectively, one of the two guide holes 12 has a circular cross section, the other is rectangular, the two guide rods 711 of the headrest rear cover 71 respectively pass through the two guide holes 12, the two guide rods 711 also have a circular cross section, the other is rectangular, the headrest rear cover 71 can move forward and backward relative to the base 1, and the cross section shapes of the two guide holes 12 are different and correspond to the guide rods 711 with different shapes, so that the headrest has an error preventing function, and the error direction during assembly can be effectively avoided. In addition, the middle part of the base body 1 is provided with a cavity 16 which is opened downwards, and the front side wall and the rear side wall of the cavity 16 are respectively provided with two strip-shaped guide protrusions 15 which are used for lifting and guiding the clamping tongue 5. The base body 1 is provided with a mounting plate 11 for supporting the rotor 4, the lower surface of the mounting plate 11 is provided with a mounting protrusion 111, the upper surface of the mounting plate is provided with a positioning protrusion 112, and the base body 1 is also provided with a third countersink 17 for mounting the second spring 26.
Referring to fig. 5 to 11, the driving push block 2 and the driven push block 3 are disposed in the base 1 in a manner of being opposite to each other, and are both slidable along the base 1.
Wherein, one end of the driving push block 2 far away from the driven push block 3 penetrates out of the base body 1 and is connected with the button 6 to be driven by the same, and the driving push block is also provided with a closed first bayonet 21, and the other end is elastically supported on the base body 1 and is provided with a first connecting hole 22. Specifically, the position of the first bayonet 21 corresponds to the position of the first mounting opening 13 up and down, so that the first mounting opening 13 is kept penetrating up and down, the relative position of the first bayonet 21 and the first mounting opening 13 can be changed by adjusting the position of the active push block 2, the headrest rod 8 is unlocked or locked, a first columnar clamping component 23 is arranged on the side wall of the side, close to the rotor 4, of the first bayonet 21, and when the headrest rod 8 passes through the first mounting opening 13 and the first bayonet 21 at the same time, the first clamping component 23 is used for being embedded into a first locking structure 81 on the headrest rod 8 to lock the headrest rod 8, so that the headrest shell 7 cannot be adjusted up and down. The end of the driving push block 2 near the rotor 4 is provided with a second sinking groove 25 corresponding to the third sinking groove 17, a second spring 26 is arranged between the second sinking groove 25 and the third sinking groove 17, and the second spring 26 continuously applies an outward acting force to the driving push block 2 to reset the driving push block 2 and keep away from the driven push block 3, so that the driving push block 2 and the driven push block 3 keep locking the headrest rod 8.
In addition, the end of the driven push block 3 far away from the driving push block 2 is provided with a second bayonet 31 which is open outwards, and the other end is provided with a second connecting hole 32. Specifically, the position of the second bayonet 31 corresponds to the position of the second mounting opening 14 up and down, so that the second mounting opening 14 is kept penetrating up and down, the relative position of the second bayonet 31 and the second mounting opening 14 can be changed by adjusting the position of the driven push block 3, the headrest rod 8 is unlocked or locked, a columnar second engaging member 33 is arranged on the side wall of the second bayonet 31 near the rotor 4, and when the headrest rod passes through the second mounting opening 14 and the second bayonet 31 at the same time, the first engaging member 23 of the second engaging member 33 is used for being embedded into the first locking structure 81 on the headrest rod 8 to lock the headrest rod 8, so that the headrest of the seat cannot be adjusted up and down.
In this embodiment, the driving push block 2 and the driven push block 3 are separated from the first locking structure 81 when they are close to each other, so that the headrest rod 8 is movably located in the first mounting opening 13 and the second mounting opening 14, and the headrest of the seat can be adjusted up and down, however, according to the specific structures of the driving push block 2 and the driven push block 3, especially the positions of the first engaging member 23 and the second engaging member 33 are different, the driving push block 2 and the driven push block 3 may be separated from the first locking structure 81 when they are far away from each other, and may also be separated from the first locking structure 81 by moving in the same direction.
Referring to fig. 3 to 11, the rotor 4 is rotatably mounted on the base 1 and is connected to the driving pusher 2 and the driven pusher 3, respectively. Specifically, the middle part of the rotor 4 has a center hole 43 that is fitted in the shaft hole of the positioning boss 112, and the positioning boss 112 passes through the center hole 43 and is rotatable along the positioning boss 112. The lower surface of the rotor 4 is provided with a first connecting shaft 41, a second connecting shaft 42 and two limiting claws 44 which are matched with the mounting disc 11, wherein the first connecting shaft 41 and the second connecting shaft 42 are oppositely arranged, the two limiting claws 44 are oppositely arranged, the mounting disc 11 is embedded into the two limiting claws 44, the rotor 4 can rotate along the positioning protrusions 112, the first connecting shaft 41 is inserted into the first connecting hole 22 and leaves a gap, the second connecting shaft 42 is inserted into the second connecting hole 32 and leaves a gap, when the driving pushing block 2 is pushed towards the direction of the driven pushing block 3, the driven pushing block 3 can be close to the driving pushing block 2 under the driving of the rotor 4, and otherwise, the driving pushing block 2 and the driven pushing block 3 are mutually far away.
Referring to fig. 5 to 11, the upper end of the latch 5 is elastically supported on the base 1, the lower end of the latch has a tooth-shaped or notch-shaped locking portion 51, the locking portion 51 is of a tooth-shaped structure adapted to the second locking structure 91, the latch 5 is slidably engaged with the base 1 and driven by the driving pusher 2 (or the driven pusher 3, or both the driving pusher 2 and the driven pusher 3), and when the driving pusher 2 approaches the driven pusher 3, the driving pusher 2 (or the driven pusher 3, or both the driving pusher 2 and the driven pusher 3) drives the latch 5 to move upward. Specifically, the upper end of the latch 5 has a first countersink 53 corresponding to the mounting protrusion 111, and a first spring 55 is disposed between the first countersink 53 and the mounting protrusion 111, and the first spring 55 continuously applies a downward force to the latch 5, so that the latch 5 can reliably lock the locking sleeve and reset the latch 5. The front and rear side walls of the latch 5 are provided with guide grooves 54 extending up and down, and the guide grooves 54 are in sliding fit with the guide protrusions 15. The two sides of the clamping tongue 5, which are close to the driving push block 2 and the driven push block 3, are respectively provided with a driving groove 52, the top wall of the driving groove 52 is provided with a first inclined surface 521 extending downwards from the notch inwards, one end of the driving push block 2, which is close to the rotor 4, is provided with a driving arm 24 extending towards the clamping tongue 5 along the horizontal direction, the end part of the driving arm 24 is embedded into the driving groove 52, and is provided with a second inclined surface 241 which is matched with the first inclined surface 521, in the embodiment, when the driving push block 2 is close to the driven push block 3, the driving arm 24 drives the clamping tongue 5 to move upwards, and is separated from a toothed second locking structure 91 on the locking sleeve 93, so that the locking sleeve 93 is unlocked, and the seat headrest can be adjusted forwards and backwards.
Referring to fig. 2, the button 6 is provided on the headrest housing 7 for driving the horizontal locking assembly, i.e. pressing the button 6 can push the driving push block 2 towards the driven push block 3.
The working procedure of this embodiment is as follows: when the button 6 is pressed, the button 6 pushes the driving push block 2 to move in a direction approaching to the driven push block 3, the driven push block 3 moves toward the driving push block 2 under the driving of the rotor 4, so that the first clamping component 23 and the second clamping component 33 are simultaneously separated from the first locking structure 81 on the headrest rod 8, the headrest shell 7 can be adjusted in a vertical sliding manner along the headrest rod 8, meanwhile, the clamping tongue 5 moves upwards under the driving of the driving push block 2, so that the locking part 51 of the clamping tongue 5 is separated from the toothed bayonet 91 of the locking sleeve 9 of the headrest, and the headrest shell 7 can be adjusted in a front-back sliding manner along the guide hole 12 of the base body 1.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. The seat headrest with the four-way adjusting function is characterized by comprising a headrest rod, a headrest shell, a locking part, a base body, a horizontal locking assembly, a clamping tongue and a button, wherein the horizontal locking assembly comprises a driving push block, a driven push block and a rotor, the base body, the driving push block, the driven push block, the rotor and the clamping tongue are all integrally formed pieces, and the base body, the driving push block, the driven push block, the rotor and the clamping tongue are all provided with weight reducing holes;
the headrest rod is of an n-shaped structure, first locking structures which are distributed in an array manner along the up-down direction are arranged on the inner side walls of the two side rods of the headrest rod, and the first locking structures are clamping groove-shaped structures;
the headrest shell comprises a headrest front cover and a headrest rear cover, the headrest front cover and the headrest rear cover are covered together to form an accommodating space, the upper end of a headrest rod is positioned in the accommodating space, and the lower end of the headrest shell is provided with a strip-shaped hole which is matched with two side rods of the headrest rod, so that the headrest shell can slide forwards and backwards along the headrest rod and upwards and downwards;
the locking component comprises a locking seat body and a locking sleeve, the locking seat body is of a hollow structure and is integrally formed with the headrest shell, the locking sleeve is detachably sleeved on the locking seat body, the locking sleeve is provided with second locking structures which are distributed in parallel along the front-rear direction, the second locking structures are tooth-shaped protrusions, the outer surface of the upper part of the locking seat body is provided with a sunk groove which extends along the axial direction of the locking seat body, the second locking structures are all positioned in the sunk groove, the axial direction of the second locking structures is perpendicular to the axial direction of the locking sleeve, the position, corresponding to the sunk groove, of the inner surface of the locking sleeve is provided with a protruding part, the locking seat body is provided with a concave part which corresponds to the protruding part, the position of the concave part corresponds to the position of the protruding part, the protruding part is embedded into the concave part, and the locking sleeve adopts POM plastic;
the base body is provided with a first mounting opening, a second mounting opening and two guide holes which are vertically penetrated, wherein a headrest rod of the headrest of the seat passes through the first mounting opening and the second mounting opening respectively, one section of the two guide holes is circular, the other section of the headrest rod is rectangular, two guide rods of the headrest rear cover respectively pass through the two guide holes, the two guide rods also enable one section to be circular, the other section of the other guide rod is rectangular, the headrest rear cover can move forwards and backwards relative to the base body, the cross section shapes of the two guide holes are different and correspond to the guide rods with different shapes, the middle part of the base body is provided with a cavity which is downwards opened, the front side wall and the rear side wall of the cavity are respectively provided with two strip-shaped guide bulges for playing a lifting guide role on the clamping tongue, the base body is provided with a mounting disc for supporting a rotor, the lower surface of the mounting disc is provided with a mounting bulge, the upper surface of the base body is also provided with a third sinking groove for mounting a second spring;
the driving pushing block and the driven pushing block are oppositely arranged in the base body and can slide along the base body;
the driving push block penetrates out of the base body from one end of the driven push block, is connected with the button and driven by the button, is also provided with a closed first bayonet, the other end of the driving push block is elastically supported on the base body and is provided with a first connecting hole, the position of the first bayonet corresponds to the position of the first mounting hole up and down, the first mounting hole is enabled to be communicated up and down, meanwhile, the relative position of the first bayonet and the first mounting hole can be changed by adjusting the position of the driving push block, a headrest rod is unlocked or locked, a first columnar clamping part is arranged on the side wall of the first bayonet, which is close to the rotor, and is used for being embedded into a first locking structure on the headrest rod to lock the headrest rod when the headrest rod passes through the first mounting hole and the first bayonet at the same time, so that the headrest shell cannot be adjusted up and down; the driving pushing block is provided with a second sinking groove corresponding to the third sinking groove at one end close to the rotor, a second spring is arranged between the second sinking groove and the third sinking groove, and the second spring continuously applies an outward acting force to the driving pushing block to reset the driving pushing block and keep away from the driven pushing block, so that the driving pushing block and the driven pushing block keep locking the headrest rod;
the driven pushing block is provided with a second bayonet which is open outwards at one end far away from the driving pushing block, the other end is provided with a second connecting hole, the position of the second bayonet corresponds to the position of the second mounting port up and down, so that the second mounting port is kept to be communicated up and down, meanwhile, the relative position of the second bayonet and the second mounting port can be changed by adjusting the position of the driven pushing block, a headrest rod is unlocked or locked, a columnar second clamping part is arranged on the side wall of the second bayonet, which is close to the rotor, and when the headrest rod passes through the second mounting port and the second bayonet at the same time, the second clamping part and the first clamping part are used for being embedded into a first locking structure on the headrest rod to lock the headrest rod, so that the headrest of the seat cannot be adjusted in a lifting manner;
the driving pushing block and the driven pushing block are separated from the first locking structure when approaching to each other, so that the headrest rod is movably positioned in the first mounting opening and the second mounting opening, and the seat headrest can be adjusted up and down;
the rotor is rotatably arranged on the base body and is respectively connected with the driving pushing block and the driven pushing block, a central hole matched with the shaft hole of the positioning protrusion is formed in the middle of the rotor, the positioning protrusion penetrates through the central hole and can rotate along the positioning protrusion, a first connecting shaft, a second connecting shaft and two limiting clamping claws which are matched with the mounting plate are arranged on the lower surface of the rotor, the first connecting shaft and the second connecting shaft are oppositely arranged, the two limiting clamping claws are oppositely arranged, the mounting plate is embedded into the two limiting clamping claws, the rotor can rotate along the positioning protrusion, the first connecting shaft is inserted into the first connecting hole and is provided with a gap, the second connecting shaft is inserted into the second connecting hole and is provided with a gap, when the driving pushing block is pushed towards the driven pushing block, the driven pushing block can be driven by the rotor to be close to the driving pushing block, and conversely, the driving pushing block and the driven pushing block are mutually far away from each other;
the upper end of the clamping tongue is elastically supported on the base body, the lower end of the clamping tongue is provided with a toothed or notch-shaped locking part, the locking part is of a toothed structure which is matched with a second locking structure, the clamping tongue is in sliding fit with the base body and driven by a driving push block, when the driving push block is close to a driven push block, the driving push block drives the clamping tongue to move upwards, the upper end of the clamping tongue is provided with a first sinking groove corresponding to the mounting protrusion, a first spring is arranged between the first sinking groove and the mounting protrusion and continuously applies downward acting force to the clamping tongue, the front side wall and the rear side wall of the clamping tongue are provided with guide grooves which extend up and down, the guide grooves are in sliding fit with the guide protrusions, the top wall of the driving groove is provided with a first inclined plane which extends inwards and downwards from the notch, one end of the driving push block, which is close to a rotor, is provided with a driving arm which extends towards the clamping tongue along the horizontal direction, the end of the driving arm is embedded into the driving groove, and is provided with a second inclined plane which is matched with the first inclined plane, and when the driving push block is close to the driven push block, the driving block is separated from the seat, and the locking sleeve is locked and locked by the locking sleeve, and the locking sleeve is in the upward locking structure;
the button is disposed on the headrest housing for actuating the horizontal locking assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175029.7A CN107054180B (en) | 2017-03-22 | 2017-03-22 | Seat headrest with four-way adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175029.7A CN107054180B (en) | 2017-03-22 | 2017-03-22 | Seat headrest with four-way adjusting function |
Publications (2)
| Publication Number | Publication Date |
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| CN107054180A CN107054180A (en) | 2017-08-18 |
| CN107054180B true CN107054180B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710175029.7A Active CN107054180B (en) | 2017-03-22 | 2017-03-22 | Seat headrest with four-way adjusting function |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791914B (en) * | 2017-09-08 | 2023-08-22 | 安道拓鱼复(重庆)汽车部件有限公司 | Two-way adjusting button type automobile seat headrest |
| CN112262058B (en) * | 2018-06-11 | 2023-04-21 | 安道拓美国有限责任公司 | Headrest with adjustable height and longitudinally |
| CN109017487B (en) * | 2018-07-11 | 2023-10-20 | 安道拓(重庆)汽车部件有限公司 | Headrest locking device for chair |
| CN109017488B (en) * | 2018-07-11 | 2023-05-23 | 安道拓(重庆)汽车部件有限公司 | Automobile seat headrest framework convenient for height adjustment |
| CN109466392B (en) * | 2018-10-26 | 2021-12-03 | 蔚来(安徽)控股有限公司 | Car and car seat thereof |
| FR3093677B1 (en) * | 2019-03-12 | 2021-04-02 | Tesca France | Motor vehicle seat headrest |
| CN109808556A (en) * | 2019-03-25 | 2019-05-28 | 重庆延锋安道拓汽车部件系统有限公司 | Seat headrest for car goes up and down unlocking mechanism |
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| CN107054180A (en) | 2017-08-18 |
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| CB02 | Change of applicant information |
Address after: 401122 No. 4, long Fuxi Road, North District, Yubei District economic and Technological Development Zone, Chongqing Applicant after: Chongqing andotuo Auto Parts System Co.,Ltd. Address before: 401122 No. 4, long Fuxi Road, North District, Yubei District economic and Technological Development Zone, Chongqing Applicant before: Chongqing Yanfeng Johnson Automotive Parts System Co.,Ltd. |
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| CB02 | Change of applicant information |
Address after: 401122 No. 4, long Fuxi Road, North District, Yubei District economic and Technological Development Zone, Chongqing Applicant after: Anduto (Chongqing) Automotive Parts Co.,Ltd. Address before: 401122 No. 4, long Fuxi Road, North District, Yubei District economic and Technological Development Zone, Chongqing Applicant before: Chongqing andotuo Auto Parts System Co.,Ltd. |
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