CN112780746A - Middle driver of automobile seat slide rail - Google Patents

Middle driver of automobile seat slide rail Download PDF

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Publication number
CN112780746A
CN112780746A CN202110108518.7A CN202110108518A CN112780746A CN 112780746 A CN112780746 A CN 112780746A CN 202110108518 A CN202110108518 A CN 202110108518A CN 112780746 A CN112780746 A CN 112780746A
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CN
China
Prior art keywords
groove
limiting
upper shell
worm
shell
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Granted
Application number
CN202110108518.7A
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Chinese (zh)
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CN112780746B (en
Inventor
于娟
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Langfang Dongping Automobile Parts Co ltd
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Individual
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Priority to CN202110108518.7A priority Critical patent/CN112780746B/en
Publication of CN112780746A publication Critical patent/CN112780746A/en
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Publication of CN112780746B publication Critical patent/CN112780746B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/07—Slide construction
    • B60N2/0722—Constructive details
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/07—Slide construction
    • B60N2/075—Slide construction roller-less
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • General Details Of Gearings (AREA)

Abstract

The application discloses a middle driver of a sliding rail of an automobile seat, which comprises an upper shell, a lower shell, a mounting groove formed between the upper shell and the lower shell, a worm wheel horizontally placed in the mounting groove, and a worm vertically installed between the upper shell and the lower shell and meshed with the worm wheel; the worm wheel is provided with an inner thread surface for connecting the screw rod in a threaded manner; a driving motor for driving the worm to rotate is arranged outside the upper shell; limiting grooves are formed in the two sides of the mounting groove between the upper shell and the lower shell, and limiting gaskets are mounted in the limiting grooves; the outer ring of the limiting gasket radially extends out of a limiting bulge. Above-mentioned spacing bellied setting has avoided spacing piece to receive inertial force to influence under the rotation of worm wheel and has rotated, then produces the problem of frictional noise, has reduced the resistance for the transmission of worm wheel and worm on the one hand, has improved the transmission performance of driver, has reduced the noise.

Description

Middle driver of automobile seat slide rail
Technical Field
The present disclosure relates generally to the field of automotive seat component technology, and more particularly to a mid-driver for an automotive seat slide.
Background
Along with the improvement of the automation degree of the automobile, more and more automobile seats adopt an automatic adjustment mode to realize the adjustment of the front, back, up and down positions so as to replace the original manual adjustment mode.
In the process of automatic movement adjustment of an automobile seat, an automatic adjustment driver is required, and in the transmission process of the driver, because the friction and lubrication effects of various parts are poor, large resistance is generated, so that large sound is generated, large capacity is consumed in the movement of the seat, large noise is generated, and the service life and the effect of a seat adjusting mechanism and the comfort of passengers are seriously influenced.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a middle driver for a seat slide of an automobile, which has good transmission performance and low noise.
The first aspect of the application provides a middle driver of a sliding rail of an automobile seat, which comprises an upper shell, a lower shell, a mounting groove formed between the upper shell and the lower shell, a worm wheel horizontally placed in the mounting groove, and a worm vertically installed between the upper shell and the lower shell and meshed with the worm wheel; the worm wheel is provided with an inner thread surface for connecting the screw rod in a threaded manner; a driving motor for driving the worm to rotate is arranged outside the upper shell; the worm wheel rotates under the transmission of the worm to realize the axial movement of the middle driver on the screw rod;
the worm wheel comprises a transmission part positioned in the middle and installation parts positioned on two sides; the transmission part is provided with an involute helical gear surface which is meshed with the helical gear surface of the worm; the diameter of the mounting part is smaller than that of the transmission part, and the mounting part is provided with a smooth peripheral surface;
limiting grooves are formed in the two sides of the mounting groove between the upper shell and the lower shell, and limiting gaskets are mounted in the limiting grooves; the outer ring of the limiting gasket radially extends out of a limiting bulge, and a limiting table for clamping the limiting bulge is arranged on the contact surface of the lower shell and the upper shell.
According to the technical scheme provided by the embodiment of the application, primary sealing grooves are formed in two sides of the limiting groove between the upper shell and the lower shell; a limiting ring is sleeved outside the mounting part, and a primary rubber sealing ring is clamped in the limiting ring; the limiting ring is clamped in the primary sealing groove. According to the technical scheme provided by the embodiment of the application, a secondary sealing groove is formed between the upper shell and the lower shell and outside the primary sealing groove; the installation department overcoat has second grade rubber seal, second grade rubber seal card is in the second grade seal groove.
According to the technical scheme provided by the embodiment of the application, the thickness ratio of the upper shell to the lower shell ranges from 1:3 to 2: 3.
According to the technical scheme provided by the embodiment of the application, the primary rubber sealing ring and the secondary rubber sealing ring are made of butadiene-acrylonitrile rubber.
According to the technical scheme provided by the embodiment of the application, the worm wheel is made of nylon PA66 and glass fiber in a ratio of 1: 1.
According to the technical scheme that this application embodiment provided, go up on casing and the casing down correspond the worm is equipped with and is located the mounting hole of mounting groove one side, the contact surface that is equipped with the mounting hole between last casing and the casing down is step-like contact surface.
According to the technical scheme provided by the embodiment of the application, the contact surface between the upper shell and the lower shell, which is far away from the mounting hole, is a reinforced sealing surface;
the reinforced sealing surface comprises a sealing surface A arranged on the upper shell and a sealing surface B arranged on the lower shell;
a transverse wedge-shaped groove arranged along the length direction of the worm wheel and a vertical wedge-shaped groove positioned on one side of the transverse wedge-shaped groove in the width direction are formed between the sealing surface A and the sealing surface B; a transverse wedge block is inserted into the transverse wedge-shaped groove, and a vertical wedge block is inserted into the vertical wedge-shaped groove; and the contact surface of the transverse wedge block and the vertical wedge block is attached.
According to the technical scheme that this application embodiment provided, be equipped with oiling mechanism on going up the casing, oiling mechanism includes: the oil injection device comprises a T-shaped hole arranged on an upper shell, a T-shaped rubber oil seal clamped in the T-shaped hole, and an oil injection fitting which is positioned above the T-shaped rubber oil seal and is in threaded connection with the upper part in the T-shaped hole; the middle part of the T-shaped rubber oil seal is provided with an oil injection channel which is through up and down;
the oil injection fitting is provided with a funnel-shaped oil injection hole which is through up and down; the cylindrical surface of the oil filling hole is a threaded surface, and the conical surface of the oil filling hole is a smooth surface; the oil injection fitting is internally threaded with a sealing element, and the shape of the sealing element is consistent with that of the oil injection hole.
The middle driver of the automobile seat slide rail according to claim 9, wherein the bottom of the oil filling channel is partially sealed, and a leak hole with a diameter much smaller than that of the oil filling channel is formed in the middle;
a plurality of metal rings and circular rubber membranes are sequentially arranged in the oil injection channel in a row mode; a pinhole is arranged in the middle of the rubber film; the edge of the rubber film is pressed by the upper and lower metal rings;
the top edge of the oil filling channel extends inwards to form a limiting edge.
According to the technical scheme, limiting grooves are formed in two sides of the mounting groove between the upper shell and the lower shell, and limiting gaskets are mounted in the limiting grooves; the outer ring of the limiting gasket radially extends out of a limiting bulge, and a limiting table for clamping the limiting bulge is arranged on the contact surface of the lower shell and the upper shell; above-mentioned spacing gasket sets up, the axial position of the transmission portion in the mounting groove of worm wheel has been restricted, the setting of above-mentioned spacing arch and spacing platform is with spacing gasket card between last casing and lower casing, and is integrative with last casing and lower casing thoughtlessly to avoided spacing piece to receive inertial force to influence to rotate under the rotation of worm wheel, produced the problem of frictional noise then, reduced the resistance for the transmission of worm wheel and worm on the one hand, improved the transmission performance of driver, reduced the noise.
According to the technical scheme provided by some embodiments of the application, two stages of sealing grooves are designed on two sides of the mounting groove, so that an excellent oil sealing environment is provided for lubricating oil in the mounting groove, the transmission resistance is further reduced, and the transmission performance of the driver is improved.
According to the technical scheme provided by some embodiments of the application, the thickness ratio of the upper shell to the lower shell ranges from 1:3 to 2:3, so that the locking strength of the upper shell and the lower shell can be improved, and the sealing performance is further improved.
According to the technical scheme provided by some embodiments of the application, the worm wheel is made of nylon PA66 and glass fiber in a ratio of 1:1, so that on one hand, the rigidity and the service life of the worm wheel are guaranteed, compared with a traditional stainless steel structure, the worm wheel has better flexibility, and compared with a stable graphite material, the worm wheel greatly reduces the cost.
According to the technical scheme that some embodiments of this application provided, through set up between last casing and the lower casing and strengthen sealed face, adopt the sealed design of double wedge shape strengthening sealed face, further improved the sealing performance of mounting groove, guaranteed driven stability.
According to the technical scheme that this application some embodiments provided, set up detachable oiling mechanism on last casing for after this driver uses for a long time, can be under the prerequisite of not taking apart this device, add lubricating oil in toward the mounting groove through oiling mechanism, improved convenience and the life that the driver used.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a driver provided in embodiment 1 of the present application;
FIG. 2 is a schematic structural diagram of a lead screw in embodiment 1 of the present application;
FIG. 3 is a schematic view of a reinforced seal face in example 2 of the present application;
fig. 4 is a schematic structural view of an oiling mechanism in embodiment 2 of the present application;
fig. 5 is an enlarged schematic structure diagram of the oil injection passage.
Reference numbers in the figures: 10. an upper housing; 20. a lower housing; 30. mounting grooves; 40. a worm gear; 50. a worm; 60. a screw rod; 41. a transmission section; 42. an installation part; 70. a limiting groove; 71. a limiting gasket; 72. a limiting bulge; 51. mounting holes; 11. a primary seal groove; 12. a limiting ring; 13. a primary rubber sealing ring; 14. a secondary seal groove; 15. a secondary rubber sealing ring; 17. a, sealing surface; 21. b, sealing surface; 82. a vertical wedge-shaped groove; 81. a transverse wedge-shaped groove; 83. a transverse wedge block; 84. a vertical wedge block; 90. an oiling mechanism; 18. a T-shaped hole; 91. t-shaped rubber oil seal; 92. an oil injection fitting; 94. an oil injection channel; 93. a seal member; 94. an oil injection channel; 95. a leak hole; 96. a metal ring; 97. a rubber film; 98. a limiting edge; 22. a bearing; 81 a; 81b lower transverse wedge groove; 82a, a vertical wedge-shaped groove; 82b, lower vertical wedge groove.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, the present embodiment provides a middle driver for a slide rail of an automobile seat, including an upper shell 10, a lower shell 20, a mounting groove 30 formed between the upper shell 10 and the lower shell 20, a worm wheel 40 horizontally disposed in the mounting groove 30, and a worm 50 vertically disposed between the upper shell 10 and the lower shell 20 and engaged with the worm wheel; the worm wheel 40 is provided with an internal thread surface 60 for connecting a screw rod in a threaded manner; a driving motor for driving the worm 50 to rotate is installed outside the upper shell 10; the worm wheel 40 rotates under the transmission of the worm 50, so that the central driver can axially move on the screw rod 60;
the worm wheel 40 comprises a transmission part 41 positioned in the middle and mounting parts 42 positioned at two sides; the transmission part 41 has an involute helical gear surface, and is meshed with the helical gear surface of the worm 50; the diameter of the mounting part 42 is smaller than that of the transmission part, and the mounting part has a smooth outer peripheral surface;
a limiting groove 70 is formed between the upper shell 10 and the lower shell 20 at two sides of the mounting groove 30, and a limiting gasket 71 is mounted in the limiting groove 70; a limiting bulge 72 radially extends out of the outer ring of the limiting gasket 71, and a limiting table (not shown in the figure) for clamping the limiting bulge 72 is arranged on the contact surface of the lower shell 10 and the upper shell 20.
Mounting holes 51 are formed in the upper shell 10 and the lower shell 20 corresponding to the worm 50, and the tops of the mounting holes 51 are connected with the upper shell 20 through bearings 22; when the driving motor drives the worm 50 to rotate, the worm wheel 40 is driven to rotate, and the worm wheel 40 moves along with the screw rod when rotating, so that the upper shell 10, the lower shell 20 and related components are driven to move together; meanwhile, the limit gasket 70 is fixed through the limit protrusion 72, so that the limit of the worm wheel is realized, the limit gasket 70 is prevented from rotating along with the worm wheel 40, the friction noise generated between the limit gasket 70 and the worm wheel 40 is greatly reduced, and the transmission loss is reduced.
As shown in fig. 2, when the driver provided by this embodiment is in operation, two ends of the screw rod 60 are fixed on the slide rails of the car seat by fixing pieces, the whole shell formed by the upper shell and the lower shell is fixedly connected with the movable slider of the car seat by a connecting structure, and when the driver moves, the car seat and the slide rails at the bottom of the car seat can move relatively.
Preferably, in this embodiment, a primary sealing groove 11 is disposed between the upper housing 10 and the lower housing 20 at two sides of the limiting groove 71; a limiting ring 12 is sleeved outside the mounting part, and a primary rubber sealing ring 13 is clamped in the limiting ring 12; the limiting ring 13 is clamped in the primary sealing groove 11. A secondary sealing groove 14 is arranged between the upper shell 10 and the lower shell 20 and outside the primary sealing groove 11; the second grade rubber seal 15 has been overcoat to installation department 42, second grade rubber seal 15 card is in the second grade seal groove 14. When the driver of this embodiment is installed, the lubricating grease can be put into the mounting groove 30, and the secondary sealing structure in this embodiment can strengthen the oil seal performance of the device, improve the transmission performance, and reduce the transmission loss.
Preferably, in the present embodiment, the thickness ratio of the upper case 10 to the lower case 20 ranges from 1:3 to 2: 3. In the present embodiment, the upper casing 10 and the lower casing 20 are fastened by bolts, and when the thickness ratio between the upper casing 10 and the lower casing 20 is within the above range, the locking strength between the upper casing 10 and the lower casing 20 can be enhanced.
Preferably, in this embodiment, the primary rubber sealing ring and the secondary rubber sealing ring are made of butadiene-acrylonitrile rubber.
Preferably, in the embodiment, the worm wheel is made of nylon PA66 and glass fiber in a ratio of 1: 1.
Preferably, in the present embodiment, the upper housing 10 and the lower housing 20 are provided with mounting holes 51 corresponding to the worms 50 and located on one side of the mounting groove 30, and the contact surface between the upper housing 10 and the lower housing 20, on which the mounting holes 51 are provided, is a step-shaped contact surface. The stepped contact surface may enhance the sealing performance of the mounting groove 30 at the side surface.
Example 2
As shown in fig. 3, in this embodiment, based on embodiment 1, the contact surface between the upper casing 10 and the lower casing 20 away from the mounting hole is a reinforced sealing surface;
the reinforced sealing surface comprises an A sealing surface 17 arranged on the upper shell 10 and a B sealing surface 21 arranged on the lower shell 20;
a transverse wedge-shaped groove 81 arranged along the length direction of the worm wheel 40 and a vertical wedge-shaped groove 82 positioned on one side of the width direction of the transverse wedge-shaped groove 81 are formed between the A sealing surface 17 and the B sealing surface 21; a transverse wedge block 83 is inserted into the transverse wedge groove 81, and a vertical wedge block 84 is inserted into the vertical wedge groove 82; the contact surfaces of the transverse wedge blocks 83 and the vertical wedge blocks 84 are attached. The transverse wedge groove 81 includes an upper transverse wedge groove 81a provided on the upper case 10 and a lower transverse wedge groove 81b provided on the lower case 20; the vertical wedge groove 82 includes an upper vertical wedge groove 82a provided on the upper case 10 and a lower vertical wedge groove 82b provided on the lower case 20; when the upper shell 10 is fixed with the lower shell 20, the transverse wedge block 83 is placed into the lower transverse wedge groove 81b, the vertical wedge block 84 is placed into the lower vertical wedge groove 82b, the upper shell 10 is aligned to the lower shell 20, the upper transverse wedge groove 81a is aligned with the lower transverse wedge groove 81b, the upper vertical wedge groove 82a is aligned with the lower vertical wedge groove 82b, after the upper shell and the lower shell are compressed, the double wedge structure enables the side, far away from the mounting hole 51, of the re-reinforcing mounting groove 30 to form a reinforced sealing structure, the oil sealing performance of the device can be enhanced, the transmission performance is improved, and the transmission loss is reduced.
Preferably, as shown in fig. 4 and 5, in this embodiment, an oil injection mechanism 90 is disposed on the upper housing 10, and the oil injection mechanism 90 includes: a T-shaped hole 18 arranged on the upper shell 10, a T-shaped rubber oil seal 91 clamped in the T-shaped hole 18, and an oil injection fitting 92 which is positioned above the T-shaped rubber oil seal 91 and is in threaded connection with the inner upper part of the T-shaped hole 18; the middle part of the T-shaped rubber oil seal 91 is provided with an oil injection passage 94 which is through up and down;
the oil injection fitting 92 is provided with a funnel-shaped oil injection hole which is through up and down; the cylindrical surface of the oil filling hole is a threaded surface, and the conical surface of the oil filling hole is a smooth surface; the oil injection fitting is internally threaded with a sealing member 93, and the shape of the sealing member 93 is consistent with that of the oil injection hole.
The structure of this embodiment for the sealing member of oiling mechanism 90 can be screwed and disassembled, and on the basis of not disassembling the upper housing and the lower housing, the lubrication oil can be injected into the mounting groove 30, and the service life and the transmission performance of the driver are improved.
The bottom of the oil filling channel 94 is partially sealed, and a leak hole 95 with the diameter far smaller than that of the oil filling channel is formed in the middle;
a plurality of metal rings 96 and circular rubber membranes 97 are sequentially arranged in the oil injection channel 94; a pinhole is arranged in the middle of the rubber film 97; the edge of the rubber membrane is pressed by the upper and lower metal rings 96;
the top edge of the oil injection channel 94 extends inwardly to form a stop rim 98.
Above-mentioned structure of this embodiment, the accessible stretches into in the oiling hole and has penetrated the cavity oiling needle of each rubber membrane 97 in proper order and inject lubricating oil into mounting groove 30, has guaranteed the oil blanket performance of oiling mechanism owing to the structure of multilayer rubber membrane on the one hand in addition.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. The middle driver of the automobile seat sliding rail is characterized by comprising an upper shell (10), a lower shell (20), a mounting groove (30) formed between the upper shell (10) and the lower shell (20), a worm wheel (40) horizontally placed in the mounting groove (30), and a worm (50) vertically installed between the upper shell (10) and the lower shell (20) and meshed with the worm wheel (40); the worm wheel (40) is provided with an inner thread surface for being in threaded connection with the screw rod (60); a driving motor for driving the worm (50) to rotate is arranged outside the upper shell (10); the worm wheel (40) rotates under the transmission of the worm (50) to realize the axial movement of the middle driver on the screw rod (60);
the worm wheel (40) comprises a transmission part (41) positioned in the middle and installation parts (42) positioned on two sides; the transmission part (41) is provided with an involute helical gear surface and is meshed with the helical gear surface of the worm (50); the diameter of the mounting part (42) is smaller than that of the transmission part (41), and the mounting part has a smooth outer peripheral surface;
limiting grooves (70) are formed in the two sides of the mounting groove (30) between the upper shell (10) and the lower shell (20), and limiting gaskets (71) are mounted in the limiting grooves (70); the outer ring of the limiting gasket (71) radially extends out of a limiting protrusion (72), and a limiting table for clamping the limiting protrusion (72) is arranged on the contact surface of the lower shell (20) and the upper shell (10).
2. The middle driver of the automobile seat slide rail according to claim 1, wherein a primary sealing groove (11) is arranged between the upper shell (10) and the lower shell (20) at two sides of the limiting groove (70); a limiting ring (12) is sleeved outside the mounting part (42), and a primary rubber sealing ring (13) is clamped in the limiting ring (12); the limiting ring (12) is clamped in the primary sealing groove (13).
3. The middle driver of the automobile seat slide rail according to claim 1, wherein a secondary sealing groove (14) is arranged between the upper shell (10) and the lower shell (20) and outside the primary sealing groove (11); the installation department overcoat has second grade rubber seal (15), second grade rubber seal (15) card is in second grade seal groove (14).
4. The mid-seat driver of the automobile seat slide rail according to any one of claims 1 to 3, wherein the thickness ratio of the upper shell (10) to the lower shell (20) ranges from 1:3 to 2: 3.
5. The middle driver of the automobile seat slide rail according to claim 3, wherein the primary rubber sealing ring (13) and the secondary rubber sealing ring (15) are made of nitrile rubber.
6. The middle driver of the car seat track according to any one of claims 1 to 3, wherein the worm gear (40) is made of nylon PA66 and glass fiber in a ratio of 1: 1.
7. The middle driver of the automobile seat track according to any one of claims 1-3, wherein the upper casing (10) and the lower casing (20) are provided with mounting holes corresponding to the worm screws (50) at one side of the mounting groove (30), and the contact surface between the upper casing (10) and the lower casing (20) provided with the mounting holes (51) is a step-shaped contact surface.
8. The middle driver of the automobile seat slide rail according to claim 7, wherein the contact surface between the upper shell (10) and the lower shell (30) far away from the mounting hole (51) is a reinforced sealing surface;
the reinforced sealing surface comprises a sealing surface A (18) arranged on the upper shell (10) and a sealing surface B (21) arranged on the lower shell (20);
a transverse wedge-shaped groove (81) arranged along the length direction of the worm wheel (40) and a vertical wedge-shaped groove (82) positioned on one side of the transverse wedge-shaped groove (81) in the width direction are formed between the sealing surface A (18) and the sealing surface B (21); a transverse wedge block (83) is inserted into the transverse wedge groove (81), and a vertical wedge block (84) is inserted into the vertical wedge groove (82); and the contact surface of the transverse wedge block (81) and the vertical wedge block (82) is jointed.
9. The middle driver of the automobile seat slide rail according to claim 7, wherein an oil injection mechanism (90) is provided on the upper housing (10), and the oil injection mechanism (90) comprises: the oil injection device comprises a T-shaped hole (18) arranged on an upper shell (10), a T-shaped rubber oil seal (91) clamped in the T-shaped hole (18), and an oil injection fitting (92) which is positioned above the T-shaped rubber oil seal (91) and is in threaded connection with the inner upper part of the T-shaped hole (18); the middle part of the T-shaped rubber oil seal (91) is provided with an oil injection passage (94) which is through up and down;
the oil injection fitting (92) is provided with a funnel-shaped oil injection hole which is through up and down; the cylindrical surface of the oil filling hole is a threaded surface, and the conical surface of the oil filling hole is a smooth surface; the oil injection fitting is internally threaded with a sealing element (93), and the shape of the sealing element (93) is consistent with that of the oil injection hole.
10. The middle driver of the automobile seat slide rail according to claim 9, wherein the bottom of the oil filling channel (94) is partially closed, and a leak hole (95) with a diameter much smaller than that of the oil filling channel is formed in the middle;
a plurality of metal rings (96) and circular rubber membranes (97) are sequentially arranged in the oil injection channel (94); a pinhole is arranged in the middle of the rubber film (97); the edge of the rubber membrane (97) is pressed by the upper and lower metal rings (96);
the top edge of the oil filling channel extends inwards to form a limiting edge (98).
CN202110108518.7A 2021-01-27 2021-01-27 Driver in automobile seat slide rail Active CN112780746B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204136807U (en) * 2014-10-17 2015-02-04 明阳科技（苏州）有限公司 The drive mechanism of actuator before and after a kind of automotive seat
CN208621258U (en) * 2018-07-18 2019-03-19 天津鸿瑞橡胶有限公司 A kind of rubber valve leakage detection apparatus
CN210518002U (en) * 2019-11-11 2020-05-12 钱福生 Electric push rod
CN214838221U (en) * 2021-01-27 2021-11-23 于娟 Middle driver of automobile seat slide rail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204136807U (en) * 2014-10-17 2015-02-04 明阳科技（苏州）有限公司 The drive mechanism of actuator before and after a kind of automotive seat
CN208621258U (en) * 2018-07-18 2019-03-19 天津鸿瑞橡胶有限公司 A kind of rubber valve leakage detection apparatus
CN210518002U (en) * 2019-11-11 2020-05-12 钱福生 Electric push rod
CN214838221U (en) * 2021-01-27 2021-11-23 于娟 Middle driver of automobile seat slide rail

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