Stepless handrail assembly

Abstract

The present invention relates to the technical field of seats, and discloses a stepless armrest assembly, comprising a base plate, a shell installed on the base plate, and a central axis. A one-way assembly, a paddle, and a swivel are sequentially installed in the shell. The one-way assembly comprises a one-way swivel block, at least two convex parts are fixed to the side wall of the one-way swivel block, an elastic member and a friction column are installed between two adjacent convex parts, the paddle is provided with a notch, and a stopper is fixed to the swivel and inserted between two adjacent convex parts after passing through the notch. The present invention has the following advantages and effects: the one-way assembly is provided with a one-way swivel block, a friction column, an elastic member, and a stopper, and when the friction column is abutted against the inner wall of the shell by adjusting the position of the stopper, the one-way assembly and the central axis can rotate forwardly at this time, and when there is a tendency to rotate in the reverse direction, the guiding inclined surface guides the friction column to continuously approach the inner wall of the shell, limiting the flipping of the one-way assembly and the central axis, and can realize stepless adjustment of the position of the armrest connected to the central axis, and the adjustment noise is small.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a stepless armrest assembly. Background Art

[0002] The seats of vehicles such as cars are generally equipped with armrests to improve passenger comfort. The armrests are flipped open when in use and folded up to save space when not in use. The Chinese patent with authorization announcement number CN206734120U discloses a three-level adjustable armrest for seats. The armrest can be adjusted in three levels when in use, but it cannot satisfy the passengers' need to adjust the armrest to any position for fixing, i.e., it cannot achieve stepless adjustment. The Chinese patent with authorization announcement number CN203088268U discloses a stepless armrest, which achieves stepless fixation through the friction between the grip spring and the spring fixing column, but has the problem of poor stability when the armrest is positioned.

[0003] In view of this, it is necessary to provide an armrest assembly that can realize stepless adjustment of the armrest and has good structural stability. Summary of the invention

[0004] The object of the present invention is to provide a stepless handrail assembly, which has the effects of achieving stepless adjustment and stabilizing the structure after the handrail is positioned.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a stepless handrail assembly, comprising a base plate, a shell installed on the base plate, and a central axis, wherein a one-way assembly circumferentially fixed to the central axis, a paddle fixed to the central axis circumferentially, and a swivel are installed in the shell in sequence, the one-way assembly comprising a one-way swivel block, at least two protrusions are fixed to the side wall of the one-way swivel block, an elastic member and a friction column are installed between two adjacent protrusions, the paddle is provided with a notch, the swivel is fixed with a stopper that passes through the notch and is inserted between two adjacent protrusions, the elastic force of the elastic member drives the friction column to abut against the stopper, and a guide inclined surface that fits the friction column is provided on the side wall of the one-way swivel block, and the stepless handrail assembly also includes an adjustment assembly for adjusting the position of the stopper so that the friction column abuts against or separates from the inner wall of the shell, and when the friction column abuts against the inner wall of the shell and the one-way swivel block has a tendency to rotate in the opposite direction, the guide inclined surface is used to guide the friction column to continuously approach and abut against the inner wall of the shell.

[0006] By adopting the above technical solution, when the stepless armrest assembly is used, the bottom plate is fixed on the seat, and the central axis is fixed on the armrest. When the stop block position makes the friction column abut against the inner wall of the shell, the armrest position is flipped upward to adjust the center axis to rotate forward, and then the paddle and the one-way rotating block to rotate forward. When the armrest position is adjusted to the required position, the passenger on the seat can be supported on the armrest. When the armrest has a tendency to move downward, the center axis and the one-way rotating block have a tendency to rotate in the opposite direction. The guide slope guides the friction column to continuously approach and abut against the inner wall of the shell, limiting the one-way block and the center axis to rotate in the opposite direction, and then limiting the armrest connected to the center axis to move downward, so that the armrest can meet the use requirements.

[0007] When the armrest needs to be stored and no longer used, the position of the stopper is adjusted with the adjustment component to separate the friction column from the inner wall of the shell. The one-way rotating block and the central axis can be rotated forward or reversely, and the position of the armrest can be adjusted by turning it upside down, and the armrest can be turned down for storage.

[0008] The present invention is further configured as follows: it also includes a fixed cover plate covering the shell, the adjustment assembly also includes a blocking portion fixed to the swivel, a backstop block hinged on the paddle, a backstop column fixed on the backstop block, and an angle adjustment plate located between the backstop block and the fixed cover plate, the angle adjustment plate is provided with a rotation limit groove and an arc groove, a limit column embedded in the rotation limit groove is fixed on the fixed cover plate, a push groove is provided on the side wall at one end of the arc groove, a return spring is installed between the paddle and the backstop block, and the elastic force of the return spring is used to drive the backstop block to move so that the backstop column is located in the push groove; when the backstop column is located in the When the lever is in the forward direction, the stopper is in a state where the friction column abuts against the inner wall of the outer shell. When the central axis drives the one-way rotating block and the paddle to rotate forwardly, the stopper column drives the angle adjustment plate to continue to rotate until the angle adjustment plate is blocked by the limit column. When the paddle continues to rotate forwardly, the stopper column enters the arc groove from the pushing groove. After the stopper block rotates, it is dislocated and separated from the blocking portion. After the stopper is affected by the friction column, it moves and abuts against the inner wall of the notch or the convex portion. Under the elastic force of the elastic member, the friction column moves with the stopper and is separated from the inner wall of the outer shell.

[0009] The present invention is further configured as follows: a support bracket is fixed on the rotating ring, and the support bracket supports the end surface of the angle adjustment plate.

[0010] By adopting the above technical solution, the number of the supporting parts can be one or more, which support the end surface of the angle adjustment plate to prevent the angle adjustment plate from deflecting or tilting.

[0011] The present invention is further configured as follows: a receiving hole is provided in the middle of the angle adjustment plate, a shaft sleeve is installed on the central shaft, and the shaft sleeve passes through the receiving hole.

[0012] The present invention is further configured as follows: the pushing groove is provided with a guiding inclined surface connected to the arc groove.

[0013] By adopting the above technical solution, when the angle adjustment plate rotates until it is blocked by the limit column, the angle adjustment plate cannot continue to rotate forward, the central axis continues to drive the one-way component and the paddle to rotate forward, the paddle drives the stop block to continue to move, the stop column on the stop block enters the arc groove from the inner side of the push groove along the guide slope, the stop block is separated after being offset from the blocking position, and the elastic force of the elastic part in the one-way component acts on the friction column and the stop block on the swivel, and the stop block moves away from the elastic part and is pressed against after being subjected to the force.

[0014] The present invention is further configured as follows: a stop block rotating shaft is provided between the stop block and the paddle, the rotating ring is located between the stop block and the paddle, and the stop block is attached to an end face of the rotating ring.

[0015] The present invention is further configured as follows: the return spring is a torsion spring.

[0016] The present invention is further configured as follows: the cross section of the inner wall of the shell is circular.

[0017] The present invention is further configured as follows: a center hole 1 is opened in the middle of the one-way rotating block, a center hole 2 is opened in the middle of the paddle, the center axis passes through the center hole 2 and the center hole 1 in sequence and is rotatably connected to the base plate, and the center axis and the one-way rotating block, as well as the center axis and the paddle are all in a circumferentially fixed state.

[0018] The present invention is further configured as follows: the cross section of the central axis is rectangular, and the cross section of the first central hole and the cross section of the second central hole are both rectangular.

[0019] The beneficial effects of the present invention are:

[0020] 1. The one-way component is provided with a one-way rotating block, a friction column, an elastic member and a stopper. When the friction column is in contact with the inner wall of the shell by adjusting the position of the stopper, the one-way component and the central axis can rotate forward. When there is a tendency to rotate in the reverse direction, the guiding inclined surface guides the friction column to continuously approach the inner wall of the shell, limiting the flipping of the one-way component and the central axis, and realizing stepless adjustment of the position of the handrail connected to the central axis with low adjustment noise.

[0021] 2. When the stepless armrest assembly is in use, the base plate is fixed on the seat, and the center axis is fixed on the armrest. When the armrest needs to be used, the passenger on the seat first flips the armrest upward. Within a certain angle range, the armrest and the center axis can only rotate forward, not backward. The passenger can use the armrest after adjusting the position of the armrest as needed, thus realizing stepless adjustment. When the armrest is not needed, the passenger continues to flip the armrest upward. The angle adjustment plate is blocked by the limit column on the fixed cover plate and cannot continue to rotate forward. The stop column enters the arc groove from the push groove, and the blocking part is dislocated and separated from the stop block. After the block receives the force of the friction column, it rests on the inner wall of the notch or the convex part. After the friction column moves with the block under the elastic force of the elastic member, the friction column is separated from the inner wall of the shell. At this time, the armrest is flipped down to the bottom, and the stop column enters the push groove from the arc groove again and drives the angle adjustment plate to reset. The stepless adjustment and storage operation of the armrest position are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment.

[0023] Figure 2 It is a schematic diagram of the positional relationship among the central axis, the shaft sleeve, and the angle adjustment plate of the embodiment.

[0024] Figure 3 It is a schematic diagram of the structural relationship between the one-way component, the paddle, the swivel, and the angle adjustment plate of the embodiment.

[0025] Figure 4 Schematic diagram of the positional relationship among the angle adjustment plate, the rotating ring and the paddle in the embodiment.

[0026] Figure 5 It is a schematic diagram of the structure between the one-way component and the swivel in the embodiment.

[0027] Figure 6 It is a schematic diagram of a state in which the stop block of the embodiment abuts against the blocking portion.

[0028] Figure 7 It is a schematic diagram of the state of the one-way component when the friction column of the embodiment abuts against the inner wall of the shell.

[0029] Figure 8 It is a schematic diagram of a state in which the stop block of the embodiment is separated from the blocking part.

[0030] Fig. 9 It is a schematic diagram of the state of the one-way component when the friction column of the embodiment is separated from the inner wall of the shell.

[0031] In the figure, 1, bottom plate; 2, outer shell; 3, center axis; 4, one-way component; 41, one-way swivel block; 411, center hole one; 412, guide slope; 42, convex part; 43, elastic member; 44, friction column; 5, paddle; 51, notch; 52, backstop block; 521, backstop column; 522, backstop block shaft; 523, transition arc surface; 53, return spring; 54, center hole two; 6, swivel; 61, block; 62, blocking part; 63, supporting support; 7, fixed pressure cover; 71, limit column; 8, angle adjustment plate; 81, accommodating hole; 82, rotation limit groove; 83, arc groove; 84, push groove; 841, guide slope; 9, bushing. DETAILED DESCRIPTION

[0032] Embodiment: Stepless handrail assembly, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a base plate 1, a shell 2 installed and fixed on the base plate 1, a central axis 3, and a fixed pressure cover 7. The fixed pressure cover 7 is fixed on the base plate 1 or on the shell 2 by bolts, and covers the shell 2. The inner wall of the shell 2 has a circular cross-section. The one-way component 4, the paddle 5, and the swivel 6 are installed in the shell 2 in sequence. The one-way component 4 includes a one-way swivel block 41. The one-way swivel block 41 has a central hole 1 411 in the middle, and the paddle 5 has a central hole 2 54 in the middle. The central axis 3 passes through the central hole 2 54 and the central hole 1 411 in sequence and is rotatably connected to the base plate 1. The cross-section of the central axis 3 is rectangular, and the cross-sections of the central hole 1 411 and the central hole 2 54 are both rectangular, so that the central axis 3 and the one-way swivel block 41, and the central axis 3 and the paddle 5 are all circumferentially fixed. Circumferential fixation refers to fixed position in the circumferential direction.

[0033] like Figure 3 , Figure 4 , Figure 5 As shown, the side wall of the one-way rotating block 41 is formed with five protrusions 42, and an elastic member 43 and a friction column 44 are arranged between two adjacent protrusions 42. A guide slope 412 is also formed between the side walls of the one-way rotating block 41, and the guide slope 412 is located between the two protrusions 42. The side wall of the friction column 44 is attached to the guide slope 412. Five notches 51 are formed on the paddle 5, and five blocks 61 are integrally formed on one end surface of the rotating ring 6. Each block 61 passes through the notch 51 and is inserted between two adjacent protrusions 42 of the one-way rotating block 41. The elastic member 43 is a spring, and one end of the elastic member 43 abuts on the protrusion 42, and the other end abuts on the friction column 44. The elastic force of the elastic member 43 presses the friction column 44 against the block 61.

[0034] like Figure 3 , Figure 4 , Figure 5As shown, an adjustment assembly is provided in the housing 2, and the adjustment assembly includes a blocking portion 62 fixed to the rotating ring 6, a stop block 52 hinged on the paddle 5, a stop column 521 fixed on the stop block 52, and an angle adjustment plate 8 located between the stop block 52 and the fixed cover plate 7. A stop block rotating shaft 522 is provided between the stop block 52 and the paddle 5, and the stop block rotating shaft 522 is rotatably connected to the paddle 5 and fixed to the stop block 52, so that the stop block 52 rotates relative to the paddle 5. The rotating ring 6 is located between the stop block 52 and the paddle 5, and the stop block 52 is attached to the end surface of the rotating ring 6. A return spring 53 is installed at the rotation shaft of the stop block 52, and the return spring 53 is a torsion spring, one end of which is fixed to the paddle 5, and the other end is against the side wall of the stop block 52.

[0035] like Figure 3 , Figure 4 , Figure 5 As shown, a receiving hole 81 is provided in the middle of the angle adjustment plate 8 for the central shaft 3 to pass through. A shaft sleeve 9 is also installed and fixed on the central shaft 3, and the shaft sleeve 9 also passes through the receiving hole 81 to reduce the gap between the central shaft 3 and the receiving hole 81. Two supporting brackets 63 are fixed to the end face of the swivel 6. The two supporting brackets 63 and the blocking portion 62 jointly support the end face of the angle adjustment plate 8 to prevent the angle adjustment plate 8 from deflecting and tilting. The angle adjustment plate 8 is provided with a rotation limit groove 82 and an arc groove 83. A limit column 71 is fixed on the fixed cover plate 7. The limit column 71 is embedded in the rotation limit groove 82. The two ends of the rotation limit groove 82 are respectively the limit end 1 and the limit end 2. A push groove 84 is provided on the side wall of one end of the arc groove 83. The push groove 84 is provided with a guide inclined surface 841 connected to the arc groove 83. The stop column 521 is embedded in the push groove 84 or the arc groove 83.

[0036] Working principle: When the stepless armrest assembly is in use, the base plate 1 is fixed on the seat, the central axis 3 is fixed on the armrest, and when the armrest is in the storage state, the stop column 521 on the stop block 52 is embedded in the push groove 84 on the angle adjustment plate 8, and the elastic force of the elastic member 43 in the one-way assembly 4 acts on the friction column 44, pressing the friction column 44 on the stop block 61 of the swivel 6. The stop block 61 is subjected to the force of the friction column 44 and transmitted to the swivel 6. The blocking portion 62 on the swivel 6 abuts against the stop block 52. At this time, the friction column 44 is in contact with the inner wall of the housing 2, see Figure 6 , Figure 7 .

[0037] When the armrest is needed, the armrest is flipped upward, driving the central shaft 3 to rotate forward, the central shaft 3 drives the paddle 5 and the one-way rotating block 41 to rotate forward, the friction column 44 in the one-way component 4 remains in contact with the inner wall of the shell 2 and moves in the shell 2, the stop block 52 rotates forward with the paddle 5, and under the elastic force of the return spring 53, the stop column 521 on the stop block 52 is in the push groove 84 and drives the angle adjustment plate 8 to rotate forward. When the armrest is flipped up to the desired position, the passenger can use the elbow on the armrest, at which time the armrest tends to rotate downward after being stressed, driving the central shaft 3 to move in the opposite direction, and the guide slope 412 guides the friction column 44 to continuously approach the inner wall of the shell 2 until the friction column 44 and the shell 2 are tightly pressed, limiting the reverse rotation of the central shaft 3 and the downward flipping of the armrest.

[0038] When the armrest is not needed, the armrest continues to be flipped upward, driving the central shaft 3 to continue to rotate forward, and the angle adjustment plate 8 continues to rotate until it is blocked by the limit column 71 on the fixed cover plate 7 and cannot continue to rotate forward, that is, the limit column 71 abuts against a limit end of the rotation limit groove 82, and the central shaft 3 continues to drive the paddle 5 to rotate forward, and the paddle 5 drives the stop block 52 to continue to move, and the stop column 521 on the stop block 52 enters the arc groove 83 from the inner side of the pushing groove 84 along the guiding inclined surface 841, and the blocking portion 62 on the swivel 6 is misaligned and separated from the stop block 52. 4, because the friction column 44 is pressed on the stopper 61 of the swivel 6 under the elastic force of the elastic member 43, after the blocking portion 62 is separated from the stop block 52, the stopper 61 is moved away from the elastic member 43 by the force of the friction column 44 until the stopper 61 is blocked by the inner wall of the notch 51 of the paddle 5 or the convex portion 42 of the one-way swivel block 41. After the friction column 44 moves with the stopper 61 under the elastic force of the elastic member 43, it is in a state of being separated from the inner wall of the housing 2. At this time, the central shaft 3 can rotate forward or reverse, and the armrest connected to the central shaft 3 can be turned up or down. Figure 8 , Fig. 9 After the armrest is flipped upward to the limit position, the armrest is flipped downward to the bottom, the central shaft 3 drives the one-way rotating block 41 and the paddle 5 to rotate in the opposite direction, the paddle 5 drives the stop block 52 to move, the stop post 521 on the stop block 52 enters the push groove 84 and drives the angle adjustment plate 8 to rotate in the opposite direction, the angle adjustment plate 8 rotates in the opposite direction until the stop post 521 and the limiting end of the rotation limiting groove 82 are in conflict. The stop block 52 is provided with a transition arc surface 523, and the stop block 52 moves relative to the blocking portion 62 at the same time, the transition arc surface 523 fits and moves relative to the blocking portion 62, so that the stop block 52 is again against the blocking portion 62, and the position of the rotating ring 6 and the stop block 61 is adjusted by abutting against the blocking portion 62, so that the stop block 61 moves and separates from the inner wall of the notch 51 or the convex portion 42, and the friction column 44 is pushed by the stop block 61 and is in a state of abutting against the inner wall of the housing 2 again.

Claims

1. A stepless handrail assembly, comprising a base plate (1), a housing (2) mounted on the base plate (1), and a central axis (3), characterized in that: A one-way component (4) circumferentially fixed to the central axis (3), a paddle (5) circumferentially fixed to the central axis (3), and a rotating ring (6) are sequentially installed in the housing (2); the one-way component (4) comprises a one-way rotating block (41); at least two protrusions (42) are fixed to a side wall of the one-way rotating block (41); an elastic member (43) and a friction column (44) are installed between two adjacent protrusions (42); the paddle (5) is provided with a notch (51); and the rotating ring (6) is fixed with a friction member passing through the notch (51). The stepless handrail assembly further comprises a stopper (61) which is inserted between two adjacent protrusions (42), the elastic force of the elastic member (43) drives the friction column (44) to abut against the stopper (61), the side wall of the one-way rotating block (41) is provided with a guide inclined surface (412) which fits the friction column (44), and the stepless handrail assembly further comprises an adjustment assembly for adjusting the position of the stopper (61) so that the friction column (44) abuts against or separates from the inner wall of the outer shell (2). When the friction column (44) abuts against the inner wall of the outer shell (2) and the one-way rotating block (41) is in contact with the inner wall of the outer shell (2), the stepless handrail assembly further comprises an adjustment assembly for adjusting the position of the stopper (61) so that the friction column (44) abuts against or separates from the inner wall of the outer shell (2). When the rotating block (41) has a tendency to rotate in the reverse direction, the guiding inclined surface (412) is used to guide the friction column (44) to continuously approach and press against the inner wall of the outer shell (2); the adjusting assembly also includes a fixed cover plate (7) covering the outer shell (2); the adjusting assembly also includes a blocking portion (62) fixed to the rotating ring (6), a stop block (52) hingedly connected to the paddle (5), a stop column (521) fixed to the stop block (52), and an angle adjustment member (521) located between the stop block (52) and the fixed cover plate (7). The angle adjustment plate (8) is provided with a rotation limit groove (82) and an arc groove (83); a limit column (71) embedded in the rotation limit groove (82) is fixed on the fixed cover plate (7); a push groove (84) is provided on a side wall at one end of the arc groove (83); a return spring (53) is installed between the paddle (5) and the stop block (52); the elastic force of the return spring (53) is used to drive the stop block (52) to move so that the stop column (521) is located in the push groove (84);When the stop post (521) is located in the pushing groove (84), the blocking portion (62) is abutted by the stop block (52), and the stop block (61) is in a state where the friction post (44) abuts against the inner wall of the housing (2). When the central shaft (3) drives the one-way rotating block (41) and the paddle (5) to rotate forward, the stop post (521) drives the angle adjustment plate (8) to continue to rotate until the angle adjustment plate (8) is blocked by the limiting post (71). When the paddle (5) continues to rotate forward, the stop post (521) enters the arc groove (83) from the pushing groove (84), and the stop block (52) rotates and is dislocated and separated from the blocking portion (62). The stopper (61) moves and abuts against the inner wall of the notch (51) or the convex portion (42) after receiving the force from the friction column (44). The friction column (44) moves with the stopper (61) under the elastic force of the elastic member (43) and separates from the inner wall of the housing (2). A center hole 1 (411) is provided in the middle of the one-way rotating block (41), and a center hole 2 (54) is provided in the middle of the paddle (5). The center shaft (3) passes through the center hole 2 (54) and the center hole 1 (411) in sequence and is rotatably connected to the bottom plate (1). The center shaft (3) and the one-way rotating block (41), and the center shaft (3) and the paddle (5) are all in a circumferentially fixed state. ; 2. The stepless handrail assembly according to claim 1, characterized in that: A supporting portion (63) is fixed on the rotating ring (6), and the supporting portion (63) supports the end surface of the angle adjustment plate (8).

3. The stepless handrail assembly according to claim 1, characterized in that: A receiving hole (81) is provided in the middle of the angle adjustment plate (8), a shaft sleeve (9) is installed on the central shaft (3), and the shaft sleeve (9) passes through the receiving hole (81).

4. The stepless handrail assembly according to claim 1, characterized in that: The pushing groove (84) is provided with a guiding inclined surface (841) connected to the arc-shaped groove (83).

5. The stepless handrail assembly according to claim 1, characterized in that: A stop block (52) rotating shaft is provided between the stop block (52) and the paddle (5), the rotating ring (6) is located between the stop block (52) and the paddle (5), and the stop block (52) is attached to the end surface of the rotating ring (6).

6. The stepless handrail assembly according to claim 1 or 5, characterized in that: The return spring (53) is a torsion spring.

7. The stepless handrail assembly according to claim 1, characterized in that: The inner wall cross-section of the outer shell (2) is circular.

8. The stepless handrail assembly according to claim 1, characterized in that: The cross section of the central axis (3) is rectangular, and the cross section of the central hole 1 (411) and the cross section of the central hole 2 (54) are both rectangular.

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