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CN-121973683-A - Damping device for central armrest of automobile rear seat

CN121973683ACN 121973683 ACN121973683 ACN 121973683ACN-121973683-A

Abstract

A damping device for a central armrest of a rear seat of an automobile comprises a shell, a hollow damping shaft, a first damping wing baffle bar, a second damping wing baffle bar, a shell cover, a shell cover and a shell cover, wherein the damping shaft accommodating cavity is formed in the cavity wall of the damping shaft accommodating cavity, the first damping wing baffle bar and the second damping wing baffle bar are formed on the cavity wall of the damping shaft accommodating cavity, the first damping wing baffle bar and the second damping wing baffle bar are arranged on the outer wall of the damping shaft, the first damping wing baffle bar and the second damping wing baffle bar are formed on the outer wall of the damping shaft accommodating cavity, the first damping device and the second damping wing baffle bar are formed into a friction damping pair, the first damping device and the second damping device are alternately matched with the first damping block baffle bar and the second damping block baffle bar in a use state, the shell cover is matched with the left end of the shell, a shell cover central hole is formed in the central position of the shell cover, the left end of the damping shaft extends into the central hole of the shell cover, and the right end of the damping shaft extends into the damping shaft matching hole formed in the central position of the right cavity wall of the shell. The friction damping device has the advantages of good friction damping effect, no moment damping risk, good modularization, simple structure and good economy.

Inventors

  • YANG GUANG
  • ZOU YAOZHONG
  • GONG KE

Assignees

  • 江苏忠明祥和精工股份有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. A damping device for a center armrest of a rear seat of a motor vehicle is characterized by comprising a housing (1), wherein the housing (1) is provided with a damping shaft accommodating cavity (11), a first damping wing barrier (111) and a second damping wing barrier (112) which are protruded from the cavity wall are formed on the cavity wall of the damping shaft accommodating cavity (11) in a state parallel to the length direction of the damping shaft accommodating cavity (11), the first damping wing barrier and the second damping wing barrier (111, 112) are separated from each other by 180 DEG around the circumferential direction of the damping shaft accommodating cavity (11), a hollow damping shaft (2) is rotatably arranged in the damping shaft accommodating cavity (11), a first damping device (21) and a second damping device (22) are formed on the outer wall of the damping shaft (2) in a state parallel to the length direction of the damping shaft, the first damping device and the second damping device (21, 22) form a friction damping pair with the cavity wall of the damping shaft accommodating cavity (11) and are separated from each other by 180 DEG around the circumferential direction of the damping shaft (2), the first damping shaft (2) and the housing (3) and the second damping shaft (1) are alternately matched with the housing (3) at the left end (1) and the left end (112) at the position (3), the left end of the damping shaft (2) is inserted into the central hole (31) of the shell cover, the right end of the damping shaft (2) is inserted into the damping shaft matching hole (121) formed in the central position of the right cavity wall (12) of the damping shaft accommodating cavity (11) of the shell (1), and the right end of the damping shaft (2) is inserted into the damping shaft matching hole (121).
  2. 2. The center armrest damping device for a rear seat of an automobile according to claim 1, wherein a pair of case fixing wings (13) for fixing the case (1) to an armrest in a use state are extended on an outer wall of a rear side of the case (1) and along a length direction of the case (1), cross-sectional shapes of the pair of case fixing wings (13) are in an inverted splayed relationship with each other, and a space between the pair of fixing wings (13) is configured as an armrest fixing member penetration chamber (131).
  3. 3. The center armrest damping device for a rear seat of an automobile according to claim 1, wherein when the first damping device (21) is in contact with the upper surface in the longitudinal direction of the first damping barrier (111), the second damping device (22) is in contact with the lower surface in the longitudinal direction of the second damping barrier (112), and when the first damping device (21) is in contact with the upper surface of the second damping barrier (112), the second damping device (22) is in contact with the lower surface of the first damping barrier (111).
  4. 4. The center armrest damping device for a rear seat of a vehicle according to claim 1 or 3, wherein the second damping device (22) has the same structure as the first damping device (21), the first damping device (21) includes a damping bar support wing (211) and a damping bar (212), the damping bar support wing (211) is formed on an outer wall of the damping shaft (2) along a length direction of the damping shaft (2), a damping bar support cavity (2121) is formed on a side of the damping bar (212) facing the length direction of the damping bar support wing (211), the damping bar support cavity (2121) is supported on the damping bar support wing (211), and a side surface of the damping bar (212) facing the damping shaft accommodating cavity (11) and a cavity wall of the damping shaft accommodating cavity (11) form a friction damping pair.
  5. 5. The center armrest damping device for a rear seat of an automobile according to claim 1, wherein a left journal (23) having a diameter smaller than that of the damper shaft (2) is extended leftward at a center position of a left end face of the damper shaft (2), and a right journal (24) identical to the left journal (23) is extended at a center position of a right end face, the left journal (23) is inserted into a case cover center hole (31) of the case cover (3), and the right journal (24) is inserted into a damper shaft fitting hole (121) of a center position of a damper shaft accommodating chamber right chamber wall (12) of the damper shaft accommodating chamber (11), and a left journal through hole (233) of the left journal (23) communicates with a right journal through hole (242) of the right journal (24).
  6. 6. The center armrest damping device for a rear seat of a vehicle according to claim 5, wherein a journal bearing sleeve (231) and a left seal ring (232) having the same outer diameter are sequentially sleeved on the left journal (23) from right to left, a right seal ring (241) is sleeved on the right journal (24), a left seal ring chamber (32) having an inner diameter adapted to the outer diameter of the journal bearing sleeve (231) is formed on the housing cover (3) and at a position located on the right side of the housing cover center hole (31), the journal bearing sleeve (231) and the left seal ring (232) are located in the left seal ring chamber (32) and the left seal ring (232) is in sealing engagement with the left seal ring chamber wall, a right seal ring chamber (122) is formed on the damping shaft housing chamber right chamber wall (12) and at a position corresponding to the left side of the damping shaft engagement hole (121), and the right seal ring (241) is located in the right seal ring chamber (122) and is in sealing engagement with the right seal ring chamber wall.
  7. 7. The center armrest damping device for a rear seat of an automobile according to claim 1 or 2 or 3 or 5 or 6, wherein a pair of damping limit grooves (123) are formed on the damping shaft housing chamber right chamber wall (12) and located on the left side of the damping shaft housing chamber right chamber wall (12), and the pair of damping limit grooves (123) are spaced 180 ° apart from each other around the circumferential direction of the damping shaft housing chamber right chamber wall (12).
  8. 8. The center armrest damping device of a rear seat of an automobile as set forth in claim 4, wherein the damping strip (212) is a nonmetallic damping strip, and the nonmetallic damping strip is polyurethane, polyvinyl chloride, epoxy resin, butyl rubber, nitrile rubber, silicone rubber or polysulfide rubber.
  9. 9. The center armrest damping device for a rear seat of a vehicle according to claim 1, characterized in that a housing internal thread (113) is formed on the inner wall of the left opening of the damping shaft receiving chamber (11) of the housing (1), and a housing external thread (33) is formed on the outer wall of the housing cover (3) and around the circumferential direction of the housing cover (3), the housing external thread (33) being in threaded engagement with the housing internal thread (113), a housing cover sealing ring (34) being fitted on the housing cover (3) at a position on the right side of the region of the housing internal thread (113), the housing cover sealing ring (34) being in sealing engagement with the chamber wall of the damping shaft receiving chamber (11).
  10. 10. The center armrest damping device for a rear seat of an automobile according to claim 1 or 9, characterized in that a set of recessed housing cover rotation operation cavities (35) are formed on the left side surface of the housing cover (3).

Description

Damping device for central armrest of automobile rear seat Technical Field The invention belongs to the technical field of automobile seat components, and particularly relates to a central armrest damping device of an automobile rear seat. Background The damping device in the application scene plays a very important role in improving the vehicle experience, and the core function of the damping device is to control the movement speed of a central armrest (also called a large armrest) in the rear row of the vehicle and absorb vibration by generating resistance. The automobile armrest has the advantages that when the armrest is put down, the damper can generate resistance, the situation of sudden falling caused by gravity is avoided, bang is generated, the hand feeling is high, and after the armrest is lifted, namely, the armrest is turned upwards, and then is positioned in an armrest storage cavity between two adjacent back seats of the automobile, namely, after the armrest is closed in place, the weak resistance provided by the damper can prevent shaking and noise when the automobile runs and jolts, the use safety is ensured, and the fingers are prevented from being injured by rapid falling down in a clamping manner or the seat is prevented from being violently impacted. An example of damping a central armrest in a rear row of an automobile by using a structural form of a recliner and a coil spring is shown as patent CN223396082U, and although a specific structure of a damping cylinder is not specifically disclosed, it is known through reading the entire specification that the damping cylinder is focused on realizing gear adjustment of the armrest by the coil spring recliner. Thus, the structure is complicated, and for example, the multi-component linkage of the bearing hoop seat, the matched end pipe, the rotating mandrel, the coil spring and the like is involved. The damping cylinder may be an auxiliary friction plate or a single rotary damper. The use of a power-assisted damping hinge is an alternative, typically referred to as CN217994233U, which relies on elastic deformation of metal, i.e. torsion of a torsion spring to generate a spring force, and rolling of the spring to generate friction or tension. This structure may cause moment attenuation due to metal fatigue after long-term repeated use. Disclosure of Invention The invention aims to provide the automobile rear seat central armrest damping device which is beneficial to representing a good built-in friction damping effect, avoiding metal fatigue caused by long-term repeated use and further causing moment attenuation risk, representing good modularization and being beneficial to remarkably simplifying the structure. The object of the invention is achieved by a damping device for a center armrest of a rear seat of a motor vehicle, comprising a housing which forms a damping shaft receiving space, a first damping wing stop strip and a second damping wing stop strip which are formed on a space wall of the damping shaft receiving space and are parallel to a longitudinal direction of the damping shaft receiving space, wherein the first damping wing stop strip and the second damping wing stop strip are separated from each other by 180 DEG around a circumferential direction of the damping shaft receiving space; the damping device comprises a damping shaft, a hollow damping shaft, a shell cover and a shell cover, wherein the damping shaft is rotatably arranged in a damping shaft accommodating cavity, a first damping device and a second damping device are formed on the outer wall of the damping shaft and are parallel to the length direction of the damping shaft, the first damping device and the second damping device form a friction damping pair with the cavity wall of the damping shaft accommodating cavity and are mutually separated by 180 degrees around the circumferential direction of the damping shaft, the first damping device and the second damping device are alternately matched with the first damping block baffle strip and the second damping block baffle strip in the use state, the shell cover is matched with the left end of the shell, a shell cover central hole is formed in the central position of the shell cover, the left end of the damping shaft is inserted into the shell cover central hole, the right end of the damping shaft is inserted into the damping shaft matching hole formed in the central position of the right cavity wall of the damping shaft accommodating cavity of the shell, and the right end of the damping shaft is inserted into the damping shaft matching hole. In a specific embodiment of the invention, a pair of housing fixing wings for fixing the housing to the armrest in the use state extend on the outer wall of the rear side of the housing and along the length direction of the housing, the cross-sectional shapes of the pair of housing fixing wings being in inverted splayed relation to each other, and the space between the pair of fixing