CN212400982U - Vehicle seat lifting driver capable of resisting instant high-load impact - Google Patents
Vehicle seat lifting driver capable of resisting instant high-load impact Download PDFInfo
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- CN212400982U CN212400982U CN202021547216.7U CN202021547216U CN212400982U CN 212400982 U CN212400982 U CN 212400982U CN 202021547216 U CN202021547216 U CN 202021547216U CN 212400982 U CN212400982 U CN 212400982U
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- 239000002184 metal Substances 0.000 claims abstract description 87
- 238000007667 floating Methods 0.000 claims abstract description 85
- 239000004033 plastic Substances 0.000 claims abstract description 26
- 229920003023 plastic Polymers 0.000 claims abstract description 26
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 16
- 230000001050 lubricating effect Effects 0.000 claims description 14
- 239000004519 grease Substances 0.000 claims description 12
- 238000000641 cold extrusion Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000004663 powder metallurgy Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 7
- 239000000306 component Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
本实用新型公开了一种耐受瞬间高负载冲击的交通工具座椅升降驱动器，采用少齿差结构，通过设置两个由齿轮箱体的注塑结构部分包裹固定住的金属嵌件，并将浮动盘的一对浮动盘滑块分别滑动安装在两个金属嵌件的嵌件滑槽中并能够沿所述Y方向相对滑动，能够在交通工具发生碰撞、翻滚等事故，致使加载在座椅升降驱动器上的瞬间负载极高时，防止浮动盘对塑料的齿轮箱体造成破碎；并且，本实用新型无需采用难于制造的组成部件，也无需增大增重齿轮箱体，仍能采用重量轻、结构紧凑的塑料齿轮箱体；因此，本实用新型能够同时兼顾耐受瞬间高负载冲击、制造便捷性好、体积小重量轻的性能优势。
The utility model discloses a lift driver for a vehicle seat which is resistant to instantaneous high-load impact, adopts a structure with less tooth difference, and is provided with two metal inserts which are wrapped and fixed by an injection molding structure part of a gear box body, and float floating A pair of floating disc sliders of the disc are respectively slidably installed in the insert chute of the two metal inserts and can slide relative to each other along the Y direction, which can cause accidents such as collision and rollover in the vehicle, resulting in the loading on the seat lift. When the instantaneous load on the driver is extremely high, the plastic gear box is prevented from being broken by the floating disc; in addition, the utility model does not need to use difficult-to-manufacture components, nor does it need to increase the weight of the gear box, and can still use light weight, The plastic gear box has a compact structure; therefore, the utility model can simultaneously take into account the performance advantages of resisting instantaneous high load impact, good manufacturing convenience, small size and light weight.
Description
Technical Field
The utility model relates to a seat lift driver, specific vehicle seat lift driver that tolerates high load impact in the twinkling of an eye that says so.
Background
The vehicle seat lifting driver is used for driving a motor by using electric energy, then reducing speed and increasing torque through an internal transmission part, and finally outputting the speed and the torque through an output gear to drive a corresponding mechanism (mainly in the form of a toothed plate-four-bar mechanism) on a vehicle seat to act, so that the lifting adjustment of the seat is realized.
As a core component of a vehicle seat, in addition to being required to be able to realize a lift adjustment function, reliability thereof is required to be more important. Particularly, when the vehicle has accidents such as collision, rolling and the like, the instantaneous load loaded on the driver is extremely high. The driver at this time is required to have high instantaneous high load tolerance to prevent the driver from being broken to injure passengers.
Chinese utility model patent CN207583940U discloses a reduction gear for car seat lift driver, which adopts the gear box structure of the poor structure of few tooth, has the advantages of high transmission efficiency, compact structure, small volume, light weight. However, the seat lifter actuator having the small tooth difference structure has the following problems: when accidents such as collision, rolling and the like happen to vehicles, so that the instantaneous load loaded on the seat lifting driver is extremely high, the load borne by the output gear can be transmitted to the floating disc through the planet gear and the pin column, the floating disc is stressed to generate a rotating trend, and then the floating disc can generate acting force along the X direction and along the reverse direction of the X direction on the plastic gear box body.
In the prior art, gear box structures with small tooth difference structures are adopted, and various solutions for solving the problems are provided, but all of them have corresponding defects, such as:
U.S. patent application No. 20130333496A1 is through carrying out regional heat treatment or adopting the combination design with the floating disc, realizes that the regional hardness of both sides boss of floating disc is less than middle zone hardness to when receiving the instantaneous load, utilize the elastic deformation of floating disc itself to offset partial load, play the effect that prevents the broken of plastic gear box. However, the floating disc of this solution requires a cumbersome process and is not easy to manufacture.
European patent application EP1728005B1 adopts a plastic box body part, a metal flange box body part and a plastic box body part to form a three-layer sandwich type gear box body through bolts, the metal flange box body part with a large volume is used for providing a sliding groove for a floating disc, and then the metal flange box body part is connected with a car seat side plate, so that when an instantaneous load is applied, the force of the floating disc is transmitted to the car seat side plate through the metal flange box body part, and the effect of preventing the plastic box body part from being broken is achieved by utilizing the force transmission path and the high strength of the metal flange box body part. However, this solution causes an increase in both the volume and the weight of the gearbox.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a vehicle seat lift driver that tolerates high load impact in twinkling of an eye to solve the seat lift driver that adopts few poor structure of tooth among the prior art and to tolerating high load impact in twinkling of an eye, make the problem that convenience, volume weight are difficult to compromise.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
a vehicle seat lifting driver capable of enduring instant high load impact comprises a motor, a gear box cover and a plastic gear box body, wherein a transmission mechanism, an output gear, a planetary gear, a floating disc and a mandrel extending along the Z direction are installed in an inner cavity of the gear box formed by combining the gear box cover and the gear box body, the output gear is coaxially provided with an internal gear and a driving gear used for outputting power, the output gear is coaxially installed on the mandrel, the planetary gear is meshed with the internal gear to form a planetary gear pair with small tooth difference, the mandrel penetrates through a central hole of the planetary gear, and the motor can drive the planetary gear to simultaneously rotate and revolve around the axis of the mandrel through the transmission mechanism; the gearbox body is provided with an upper mounting cavity, the floating disc is mounted in the upper mounting cavity and can relatively slide along the Y direction, the floating disc is provided with a guide sliding groove extending along the X direction, and the planetary gear is provided with a pin which is in sliding fit with the guide sliding groove; the X direction, the Y direction and the Z direction are mutually vertical in pairs;
the motor can drive the planetary gear to simultaneously rotate and revolve around the axis of the mandrel through the transmission mechanism, so that the planetary gear can drive the output gear meshed with the planetary gear to rotate, power is output through the drive gear, and due to the action of the floating disc and the pin, the pin is driven by the motion of the planetary gear to slide back and forth along the X direction in the guide sliding groove relative to the floating disc and drive the floating disc to slide back and forth along the Y direction in the upper mounting cavity relative to the gear box body, and therefore the power transmitted to the planetary gear by the motor through the transmission mechanism can be transmitted to the output gear more effectively.
Wherein, above-mentioned drive mechanism preferably adopts: the first transmission mechanism composed of the worm, and the second transmission mechanism composed of the gear and the eccentric shaft, the specific connection structure and the working principle of the transmission mechanism can be seen in chinese utility model CN 207583940U.
The method is characterized in that:
the gear box body is provided with two metal inserts in the upper mounting cavity in an insert injection molding mode, so that the metal inserts are wrapped and fixed by an injection molding structure part of the gear box body; the metal inserts are provided with insert sliding grooves extending along the Y direction, the floating discs are provided with a pair of floating disc sliding blocks which are symmetrically arranged relative to the guide sliding grooves, and the pair of floating disc sliding blocks are respectively installed in the insert sliding grooves of the two metal inserts in a sliding mode and can relatively slide along the Y direction.
Therefore, when the utility model works normally, the floating disc can slide relatively along the Y direction in the upper mounting cavity relative to the gearbox body through the sliding fit floating disc sliding block and the insert sliding groove, so that the normal work of the seat lifting driver is ensured, and the power transmitted to the planetary gear by the motor through the transmission mechanism can be more effectively transmitted to the output gear; moreover, because metal insert compares in the gearbox body of plastics wear-resisting much more, can effectively improve the utility model discloses a durability.
When the instantaneous load loaded on the seat lifting driver is extremely high due to accidents of collision, rolling and the like of vehicles, the load on the output gear is transmitted to the floating disk through the planet gear and the pin column, so that the floating disk is stressed to generate the rotation tendency, because the floating disc is only indirectly contacted with the gear box body through the floating disc sliding block which is in sliding fit with the insert sliding groove of the metal insert, the acting force generated by the rotation of the floating disc can not directly act on the plastic gear box body, but a pair of floating disk sliding blocks of the floating disk respectively generates positive impact force along the X direction and reverse impact force along the X direction to the two metal inserts, when the positive impact force and the reverse impact force act on the gear box body through the two metal inserts respectively, the plastic gear case is partially wrapped and fixed by the injection molding structure of the metal insert, so that the plastic gear case is effectively prevented from being broken by the floating disc; therefore, the utility model can bear the instant high load impact and prevent the plastic gear box body from breaking when the driver is impacted by the instant high load; and, the utility model discloses need not to adopt the component part that is difficult to make, also need not the increase gearbox body that increases weight, still can adopt light in weight, compact structure's plastics gearbox body, consequently, can compromise simultaneously and endure in the twinkling of an eye high load impact, make the performance advantage that the convenience is good, small light in weight.
Preferably: the metal insert is provided with two insert sliding grooves which are arranged at intervals, the floating disc is provided with two pairs of floating disc sliding blocks, and the two pairs of floating disc sliding blocks are respectively installed in the two insert sliding grooves of the two metal inserts in a sliding mode. Therefore, when accidents such as collision, rolling and the like happen to a vehicle, so that the instantaneous load loaded on the seat lifting driver is extremely high, and the floating disc is stressed to generate a rotating trend, four floating disc sliding blocks of the floating disc respectively have four contact surfaces with the two metal inserts, so that forward impact force and reverse impact force are further dispersed when acting on the gear box body through the two metal inserts respectively, and the plastic gear box body can be more effectively prevented from being broken by the floating disc.
Preferably: the metal insert is composed of an insert bottom plate, a first insert boss, a second insert boss and a third insert boss, the first insert boss, the second insert boss and the third insert boss are arranged on the top surface of the insert bottom plate at intervals along the X direction, the metal insert is provided with at least one insert through hole which extends along the Z direction and penetrates through the insert bottom plate and the second insert boss, and an interval space between the first insert boss and the second insert boss and an interval space between the second insert boss and the third insert boss are two insert sliding grooves;
the gearbox casing is used for partly parcel fixed injection structure of metal insert, includes: the bearing plate is used as the bottom surface of the upper mounting cavity, the first side plate, the second side plate and the third side plate are positioned on the top surface of the bearing plate and are sequentially connected, and the cylinders are positioned on the top surface of the bearing plate and are corresponding to the insert through holes in number; the insert bottom plate is located on the bearing plate, the first side plate and the third side plate are respectively attached to the outer side surface of the first insert boss and the outer side surface of the third insert boss, the first side plate, the second side plate and the third side plate are respectively provided with a convex block (sequentially marked as convex blocks 1-21, convex blocks 1-31 and convex blocks 1-41), and the three convex blocks respectively abut against the top surfaces of the first insert boss, the second insert boss and the third insert boss; the cylinders are embedded in the corresponding insert through holes.
Therefore, through the injection molding structure, the impact force dispersing effect of the floating disc acting on the gear box body through the two metal inserts can be greatly improved, and the risk that the gear box body is broken due to the fact that the floating disc transmits load when accidents such as collision and rolling of vehicles occur is further reduced.
Preferably: at least one column is connected with the lug of the second side plate, so that the impact force dispersion effect is better realized.
Preferably: the metal insert is made of powder metallurgy (oil permeable), can provide a self-lubricating function to reduce wear on the floating disc, and can reduce the weight of the metal insert.
As a preferred embodiment of the present invention: the top surface of the planetary gear is provided with an oil storage concave cavity, and lubricating grease is stored in the oil storage concave cavity; the central hole of the planetary gear is a stepped hole formed by a large-diameter upper hole and a small-diameter lower hole, and the large-diameter upper hole is communicated with the oil storage concave cavity; and a bearing is installed in a central hole of the planetary gear, and the bearing is composed of a shaft sleeve part embedded in the small-diameter lower hole and an outward flanging part embedded in the large-diameter upper hole, so that the outward flanging part covers an upper port of the oil storage cavity, and an upper port part of the oil storage cavity, which is not covered by the outward flanging part, is used as an oil outlet.
Therefore, in the movement process that the planetary gear rotates and revolves around the axis of the mandrel at the same time, under the action of gravity and centrifugal force, lubricating grease in the oil storage cavity can be discharged from the oil outlet, and an oil film is formed between the upper surface of the planetary gear and a part in contact with the upper surface, so that the abrasion is reduced, and the working efficiency of the lifting driver is improved; moreover, because the planetary gear and the internal gear are in a small tooth difference structure, lubricating grease discharged from the oil outlet can cover most of the upper surface of the planetary gear, and the lubricating effect is improved.
The speed of discharging lubricating grease from the oil outlet can be controlled by the size of the oil outlet, and the size control can be conveniently realized by adjusting the covering area of the outer flanging part on the oil storage cavity.
When the structure of the third embodiment is adopted, the component contacting with the upper surface of the planetary gear is the metal gasket; on the other hand, if the rubber gasket and the metal gasket described in the third embodiment are not provided, but the upper surface of the planetary gear is directly contacted with the inner end surface of the output gear, the member contacted with the upper surface of the planetary gear is the inner end surface of the output gear.
In addition, the outward flanging part of the bearing can also play a role in preventing the bearing from falling off or falling off from the planetary gear.
Preferably: the bottom surface of the oil storage concave cavity inclines downwards from outside to inside along the radial direction of the planetary gear, so that lubricating grease can be conveniently discharged from the oil outlet.
Preferably: the pin column is a convex column formed by extruding the planet gear on the bottom surface of the planet gear through a cold extrusion process or a fine blanking process, and the oil storage cavity is formed above the pin column in the cold extrusion process or the fine blanking process so as to facilitate the processing and forming of the pin column, the planet gear and the oil storage cavity.
As a preferred embodiment of the present invention: and a rubber gasket and a metal gasket are arranged between the top surface of the planetary gear and the inner end surface of the output gear, the metal gasket is provided with gasket latch teeth meshed with the inner gear, and the metal gasket is attached to the top surface of the planetary gear.
Therefore, the distance between the top surface of the planetary gear and the inner end surface of the output gear can be positioned by utilizing the rubber gasket and the metal gasket, and the planetary gear is prevented from moving along the Z direction in the movement process of simultaneous rotation and revolution around the axis of the mandrel; moreover, the metal gasket is meshed with the inner gear through the gasket clamping teeth, so that the rubber gasket is prevented from rotating while the metal gasket is prevented from rotating, and deformation and abrasion of the rubber gasket caused by rotation are avoided; moreover, the metal gasket can play a role in preventing the bearing from being separated upwards; therefore, the rubber gasket and the metal gasket can ensure the operational reliability of the planetary gear.
As a preferred embodiment of the present invention: the gearbox cover is connected with the gearbox body through bolts, the gearbox cover is provided with two notches which are symmetrically arranged, the gearbox body is provided with two positioning bosses, and the two positioning bosses are respectively embedded in the two notches of the gearbox cover.
Thus, on the one hand, the gear box cover can be positioned on the gear box body, and on the other hand, the gear box cover can be well prevented from rotating.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses to the seat lift driver that adopts few tooth difference structure, through setting up two metal inserts that are wrapped up and fixed by the injection structure part of gearbox housing, and with a pair of floating disc slider of floating disc respectively slidable mounting in the inserts spout of two metal inserts and can follow the relative slip of Y direction, can bump, roll etc. accident in the vehicle, when causing the instantaneous load loaded on the seat lift driver to be high, prevent that the floating disc from causing the breakage to the gearbox housing of plastics; moreover, the utility model can adopt a plastic gear box body with light weight and compact structure without adopting component parts which are difficult to manufacture and increasing the weight of the gear box body; therefore, the utility model discloses can compromise simultaneously and endure in the twinkling of an eye high load impact, make the performance advantage that the convenience is good, small light in weight.
Second, the utility model discloses a by the inserts bottom plate, the metal insert that first inserts boss, second inserts boss, third inserts boss constitute to adopt including the cushion cap board, first curb plate, the second curb plate, the injection structure of third curb plate and cylinder comes the part parcel to fix metal insert, improvement that can be great is to the dispersion effect of the impact force of floating disc through two metal inserts effects on gear box body, in order further to reduce at vehicle collision, when accidents such as roll, gear box is because of the broken risk of floating disc transmission load.
Third, the utility model discloses a top surface at planetary gear sets up the oil storage cavity to cover the up end of oil storage cavity and form the oil-out with the limit portion that turns up of bearing, can utilize from oil-out exhaust lubricating grease in planetary gear's motion process, at planetary gear's upper surface and with this upper surface contact's part between form the oil film, with reducing wear, and improve lift driver's work efficiency, have simple structure, easily machine-shaping's advantage.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
FIG. 1 is a schematic structural view of a vehicle seat lift actuator of the present invention;
FIG. 2 is an exploded view of the vehicle seat lift actuator of the present invention;
fig. 3 is an assembly schematic diagram of the gear box body 1, the floating disc 5 and the metal insert 14 in the present invention;
fig. 4 is an exploded view of the gear housing 1 and the metal insert 14 of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 3;
FIG. 6 is a cross-sectional view B-B of FIG. 3;
fig. 7 is a schematic view of the assembly of the planetary gear 7 and the bearing 8 according to the present invention;
fig. 8 is an exploded view of the structure of the planetary gear 7 and the bearing 8 according to the present invention;
fig. 9 is a cross-sectional view of the planetary gear 7 and the bearing 8 according to the present invention;
fig. 10 is an exploded view of the output gear 11, the rubber gasket 15 and the metal gasket 16 according to the present invention;
fig. 11 is a cross-sectional view of the output gear 11, the rubber gasket 15, the metal gasket 16, the planetary gear 7, and the bearing 8 according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without creative work for those skilled in the art will fall within the scope of the present invention without departing from the scope of the present invention.
Example one
As shown in fig. 1 to 6, the present invention discloses a vehicle seat lift actuator that endures instantaneous high load impact, comprising a motor 13, a gear box cover 12 and a plastic gear box body 1, a transmission mechanism, an output gear 11, a planetary gear 7, a floating disc 5 and a mandrel 9 extending along the Z direction are arranged in an inner cavity of a gear box formed by combining the gear box cover 12 and the gear box body 1, the output gear 11 is coaxially provided with an internal gear 111 and a drive gear 112 for outputting power, the output gear 11 is coaxially arranged on the mandrel 9, the planet gear 7 is meshed with the internal gear 111 and forms a small-tooth-difference planet gear pair, the spindle 9 passes through a central hole 71 of the planetary gear 7, and the motor 13 can drive the planetary gear 7 to simultaneously rotate and revolve around the axis of the spindle 9 through the transmission mechanism; the gear box body 1 is provided with an upper mounting cavity 1b, the floating disc 5 is mounted in the upper mounting cavity 1b and can relatively slide along the Y direction, the floating disc 5 is provided with a guide sliding groove 52 extending along the X direction, the planetary gear 7 is provided with a pin 6, and the pin 6 is in sliding fit with the guide sliding groove 52; the X direction, the Y direction and the Z direction are mutually vertical in pairs; the spindle 9 may be fixed to the gear housing 1 as in chinese utility model CN207583940U, or may be fixed to the output gear 11.
The motor 13 can drive the planetary gear 7 to simultaneously rotate and revolve around the axis of the mandrel 9 through the transmission mechanism, so that the planetary gear 7 can drive the output gear 11 engaged with the planetary gear 7 to rotate, power is output through the driving gear 112, and due to the action of the floating disc 5 and the pin 6, the pin 6 is driven by the movement of the planetary gear 7 to slide back and forth in the guide chute 52 along the X direction relative to the floating disc 5, and the floating disc 5 is driven to slide back and forth in the Y direction relative to the gear box body 1 in the upper mounting cavity 1b, so that the power transmitted to the planetary gear 7 by the motor 13 through the transmission mechanism can be more effectively transmitted to the output gear 11.
Wherein, above-mentioned drive mechanism preferably adopts: the first transmission mechanism composed of the worm 2, and the second transmission mechanism composed of the gear 3 and the eccentric shaft 4, the specific connection structure and the working principle of the transmission mechanism can be seen in chinese utility model patent CN 207583940U.
The gear box body 1 is provided with two metal inserts 14 in the upper mounting cavity 1b in an insert injection molding mode, so that the metal inserts 14 are wrapped and fixed by an injection molding structure part of the gear box body 1; the metal insert 14 is provided with an insert slide groove 14a extending in the Y direction, and the floating disk 5 is provided with a pair of floating disk sliders 54 arranged symmetrically with respect to the guide slide groove 52, the pair of floating disk sliders 54 being slidably mounted in the insert slide grooves 14a of the two metal inserts 14, respectively, and being capable of sliding relatively in the Y direction.
Therefore, when the utility model works normally, the floating disc 5 can slide relatively along the Y direction in the upper mounting cavity 1b relative to the gear box body 1 through the floating disc sliding block 54 and the insert sliding groove 14a which are in sliding fit, so that the normal work of the seat lifting driver is ensured, and the power transmitted to the planetary gear 7 by the motor 13 through the transmission mechanism can be more effectively transmitted to the output gear 11; moreover, because metal insert 14 is wear-resisting much more than the gearbox casing 1 of plastics, can effectively improve the utility model discloses a durability.
When the instantaneous load loaded on the seat lifting driver is extremely high due to accidents such as collision, rolling and the like of vehicles, the load borne by the output gear 11 is transmitted to the floating disc 5 through the planet gear 7 and the pin 6, so that the floating disc 5 is stressed to generate a rotation trend, because the floating disc 5 is only in indirect contact with the gear box body 1 through the floating disc sliding block 54 in sliding fit with the insert sliding groove 14a of the metal insert 14, the acting force generated by the rotation of the floating disc 5 cannot be directly acted on the plastic gear box body 1, but a pair of floating disc sliding blocks 54 of the floating disc 5 respectively generate a positive impact force F along the X direction and a reverse impact force F 'along the X direction on the two metal inserts 14, and when the positive impact force F and the reverse impact force F' respectively act on the gear box body 1 through the two metal inserts 14, the plastic gear box body 1 is effectively prevented from being broken by the floating disc 5 due to the fact that the plastic gear box body is dispersed by the injection molding structure which partially wraps and fixes the metal insert 14; therefore, the utility model can bear the instant high load impact and prevent the plastic gear box body 1 from breaking when the driver is impacted by the instant high load; and, the utility model discloses need not to adopt the component part that is difficult to make, also need not the increase gearbox casing 1 that increases weight, still can adopt light in weight, compact structure's plastics gearbox casing, consequently, can compromise simultaneously and endure in the twinkling of an eye high load impact, make the performance advantage that the convenience is good, small light in weight.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: the metal insert 14 is provided with two insert chutes 14a arranged at intervals, the floating disk 5 is provided with two pairs of floating disk sliding blocks 54, and the two pairs of floating disk sliding blocks 54 are respectively installed in the two insert chutes 14a of the two metal inserts 14 in a sliding manner. Therefore, when accidents such as collision and rolling of vehicles cause that the instantaneous load loaded on the seat lifting driver is extremely high, and the floating disc 5 is stressed to generate a rotating trend, four floating disc sliding blocks 54 of the floating disc 5 respectively have four contact surfaces with the two metal inserts 14, so that the forward impact force F and the reverse impact force F' are further dispersed when acting on the gear box body 1 through the two metal inserts 14 respectively, and the floating disc 5 can be more effectively prevented from crushing the plastic gear box body 1.
Preferably: the metal insert 14 is composed of an insert base plate 14-1, a first insert boss 14-2, a second insert boss 14-3 and a third insert boss 14-4, the first insert boss 14-2, the second insert boss 14-3 and the third insert boss 14-4 are arranged on the top surface of the insert base plate 14-1 at intervals along the X direction, the metal insert 14 is provided with at least one insert through hole 14b which extends along the Z direction and penetrates through the insert base plate 14-1 and the second insert boss 14-3, and the space between the first insert boss 14-2 and the second insert boss 14-3 and the space between the second insert boss 14-3 and the third insert boss 14-4 are two insert chutes 14 a;
the gear box body 1 is used for partially wrapping and fixing the injection molding structure of the metal insert 14, and comprises: the bearing plate 1-1 is used as the bottom surface of the upper installation cavity 1b, the first side plate 1-2, the second side plate 1-3 and the third side plate 1-4 are positioned on the top surface of the bearing plate 1-1 and are sequentially connected, and the columns 1-5 are positioned on the top surface of the bearing plate 1-1 and are corresponding to the insert through holes 14b in number; the insert bottom plate 14-1 is located on the bearing plate 1-1, the first side plate 1-2 and the third side plate 1-4 are respectively attached to the outer side surface of the first insert boss 14-2 and the outer side surface of the third insert boss 14-4, the first side plate 1-2, the second side plate 1-3 and the third side plate 1-4 are respectively provided with a convex block (sequentially marked as convex blocks 1-21, convex blocks 1-31 and convex blocks 1-41), and the three convex blocks respectively abut against the top surfaces of the first insert boss 14-2, the second insert boss 14-3 and the third insert boss 14-4; the cylinders 1-5 are embedded in the corresponding insert through holes 14 b.
Therefore, through the injection molding structure, the dispersion effect of the impact force of the floating disc 5 acting on the gear box body 1 through the two metal inserts 14 can be greatly improved, and the risk that the gear box body 1 is broken due to the transmission of load by the floating disc 5 when accidents such as collision and rolling of vehicles occur is further reduced.
Preferably: at least one column 1-5 is connected with the lug of the second side plate 1-3, so that the impact force dispersing effect is better realized.
Preferably: said metal insert 14 is made of powder metallurgy (oil-permeable), capable of providing a self-lubricating function to reduce the wear on the floating disc 5 and of reducing the weight of the metal insert 14.
Example two
On the basis of the first embodiment, the second embodiment further adopts the following preferred structure:
as shown in fig. 7 to 9, an oil storage cavity 7a is formed on the top surface of the planetary gear 7, and lubricating grease is stored in the oil storage cavity 7 a; the central hole 71 of the planetary gear 7 is a stepped hole formed by a large-diameter upper hole 71a and a small-diameter lower hole 71b, and the large-diameter upper hole 71a is communicated with the oil storage recessed cavity 7 a; and a bearing 8 is installed in the center hole 71 of the planetary gear 7, the bearing 8 is composed of a boss portion 8-1 fitted in the small-diameter lower hole 71b and an outside flanging portion 8-2 fitted in the large-diameter upper hole 71a, so that the upper port of the oil storage cavity 7a is partially covered by the outside flanging portion 8-2, and the upper port portion of the oil storage cavity 7a, which is not covered by the outside flanging portion 8-2, serves as an oil outlet port 7a 1.
Thus, during the movement of the planetary gears 7 simultaneously rotating and revolving around the axis of the spindle 9, the lubricating grease in the oil reservoir cavity 7a can be discharged from the oil outlet 7a1 under the action of gravity and centrifugal force, and an oil film is formed between the upper surfaces of the planetary gears 7 and the parts in contact with the upper surfaces to reduce wear and improve the working efficiency of the lift actuator; moreover, since the planetary gear 7 and the internal gear 111 are in a small tooth difference structure, the lubricating grease discharged from the oil outlet port 7a1 can cover most of the upper surface of the planetary gear 7, improving the lubricating effect.
The speed of discharging the lubricating grease from the oil outlet 7a1 can be controlled by the size of the oil outlet 7a1, and the size control can be conveniently realized by adjusting the covering area of the outer flanging part 8-2 on the oil storage cavity 7 a.
When the structure described in the following third embodiment is adopted, the component that contacts the upper surface of the planetary gear 7 is the metal gasket 16; on the other hand, if the rubber washer 15 and the metal washer 16 described in the third embodiment are not provided, and the upper surface of the planetary gear 7 is directly contacted with the inner end surface 11a of the output gear 11, the member contacted with the upper surface of the planetary gear 7 is the inner end surface 11a of the output gear 11.
The outward flange 8-2 of the bearing 8 also serves to prevent the bearing 8 from coming off or coming off the planetary gear 7.
The above is the basic implementation manner of the second embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation manner:
preferably: the bottom surface 7a2 of the oil storage cavity 7a is inclined downwards from outside to inside along the radial direction of the planetary gear 7 so as to facilitate the discharge of lubricating grease from the oil outlet 7a 1.
Preferably: the pin 6 is a convex column formed by extruding the planet gear 7 on the bottom surface of the planet gear 7 through a cold extrusion process or a fine blanking process, and the oil storage concave cavity 7a is formed above the pin 6 in the cold extrusion process or the fine blanking process so as to facilitate the processing and forming of the pin 6, the planet gear 7 and the oil storage concave cavity 7 a.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferable structure:
as shown in fig. 10 and 11, a rubber gasket 15 and a metal gasket 16 are disposed between the top surface of the planetary gear 7 and the inner end surface 11a of the output gear 11, the metal gasket 16 is provided with a gasket latch 16-1 engaged with the internal gear 111, and the metal gasket 16 is attached to the top surface of the planetary gear 7.
Thus, with the rubber gasket 15 and the metal gasket 16, the distance between the top face of the planetary gear 7 and the inner end face 11a of the output gear 11 can be positioned, avoiding the planetary gear 7 from moving in the Z direction during the movement of simultaneously rotating and revolving around the axis of the spindle 9; moreover, the metal gasket 16 is meshed with the internal gear 111 through the gasket latch 16-1, so that the rubber gasket 15 can be prevented from rotating while the metal gasket 16 is prevented from rotating, and the rubber gasket 15 is prevented from deforming and wearing due to rotation; moreover, the metal gasket 16 can prevent the bearing 8 from being separated upwards; therefore, the rubber washer 15 and the metal washer 16 ensure operational reliability of the planetary gear 7.
Example four
On the basis of any one of the first to third embodiments, the fourth embodiment further adopts the following preferred structure:
as shown in fig. 1, the gear box cover 12 and the gear box body 1 are connected by bolts, and the gear box cover 12 is provided with two notches 12a which are symmetrically arranged, and the gear box body 1 is provided with two positioning bosses 1-6, and the two positioning bosses 1-6 are respectively embedded in the two notches 12a of the gear box cover 12.
Thus, on the one hand, positioning can be provided for the mounting of the gearbox cover 12 onto the gearbox housing 1, and on the other hand, a very good anti-rotation performance can be provided for the gearbox cover 12.
The present invention is not limited to the above-mentioned embodiments, and according to the above-mentioned contents, according to the common technical knowledge and conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other equivalent modifications, replacements or changes in various forms, all falling within the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021547216.7U CN212400982U (en) | 2020-07-30 | 2020-07-30 | Vehicle seat lifting driver capable of resisting instant high-load impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021547216.7U CN212400982U (en) | 2020-07-30 | 2020-07-30 | Vehicle seat lifting driver capable of resisting instant high-load impact |
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| Publication Number | Publication Date |
|---|---|
| CN212400982U true CN212400982U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021547216.7U Withdrawn - After Issue CN212400982U (en) | 2020-07-30 | 2020-07-30 | Vehicle seat lifting driver capable of resisting instant high-load impact |
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| Country | Link |
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| CN (1) | CN212400982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993961A (en) * | 2020-07-30 | 2020-11-27 | 广汽零部件有限公司 | A vehicle seat lift driver capable of withstanding momentary high load impact |
| CN116620122A (en) * | 2022-02-21 | 2023-08-22 | 达斯股份公司 | Brake device for vehicle seat |
-
2020
- 2020-07-30 CN CN202021547216.7U patent/CN212400982U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993961A (en) * | 2020-07-30 | 2020-11-27 | 广汽零部件有限公司 | A vehicle seat lift driver capable of withstanding momentary high load impact |
| CN111993961B (en) * | 2020-07-30 | 2025-02-14 | 广汽零部件有限公司 | A vehicle seat lifting actuator capable of withstanding instantaneous high load impact |
| CN116620122A (en) * | 2022-02-21 | 2023-08-22 | 达斯股份公司 | Brake device for vehicle seat |
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