Automobile armrest positioning device

Abstract

The utility model provides an automobile armrest positioning device, and belongs to the technical field of automobile seats. The problem that an existing automobile armrest positioning device is poor in stability is solved. The positioning rod is arranged in the handrail in a sliding mode and extends in the width direction of the handrail, the positioning hole is formed in the side wall of the mounting groove and corresponds to the positioning rod, the operating rod is arranged in the handrail in a sliding mode and extends in the length direction of the handrail, the operating rod is provided with a locking part and an unlocking part, and the positioning rod is sleeved with a first spring acting on the positioning rod; the first spring enables the positioning rod to abut against the operating rod all the time, when the positioning rod abuts against the locking part, the outer end of the positioning rod stretches into the positioning hole, and when the positioning rod abuts against the unlocking part, the positioning rod completely retracts into the handrail. Two states of the handrail are effectively positioned through the positioning rods and the positioning holes, so that the stability of the handrail is improved; and the handrail cannot generate friction with the side surface of the mounting groove in the rotating process, so that the abrasion is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology and relates to an automotive armrest positioning device. Background Technology

[0002] To improve passenger comfort, armrests are installed in the rear seats of cars. To avoid affecting the number of rear passengers and their comfort, existing armrests are usually designed to be retractable. However, current car armrest retraction structures are simply hinged structures, resulting in low stability.

[0003] To this end, a Chinese patent discloses a fixing mechanism for an automobile armrest [application publication number CN106828227A], which is installed on the back of the rear seat of an automobile and includes a connecting groove on the back. The armrest includes a rectangular body with its inner end hinged to the lower end of the connecting groove. After the body swings around its hinge, it can be embedded in the connecting groove. The mechanism includes a positioning hole recessed on the side of the connecting groove. The positioning hole contains a spring and a ball. Under the elastic force of the spring, the ball extends out of the side wall of the connecting groove. When the body is embedded in the connecting groove, the ball abuts against the body.

[0004] Although springs and ball bearings are installed, the armrest can still rotate around the hinge point between it and the backrest under external force, and its stability is still poor. During the rotation of the armrest, the ball bearings are always pressed against the armrest by the elastic force of the spring, which can easily cause wear and tear on the armrest. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a car armrest positioning device with good stability.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A car armrest positioning device is installed between the car backrest and the armrest. The car backrest has a mounting groove, and the armrest is rotatably mounted in the mounting groove via a pivot. The positioning device includes a positioning rod that is slidably installed in the armrest and extends along the width direction of the armrest, a positioning hole corresponding to the positioning rod on the side wall of the mounting groove, and an operating rod that is slidably installed in the armrest and extends along the length direction of the armrest. The operating rod has a locking part and an unlocking part. A first spring is sleeved on the positioning rod and acts on the positioning rod. The first spring keeps the positioning rod abutting against the operating rod. When the positioning rod abuts against the locking part, the outer end of the positioning rod extends into the positioning hole. When the positioning rod abuts against the unlocking part, the positioning rod is fully retracted into the armrest.

[0008] The width of the unlocking part is smaller than the width of the locking part. When unlocking is required, move the operating lever so that the unlocking part of the lever moves to the inner end of the positioning rod. Under the action of the first spring, the positioning rod moves inward and abuts against the unlocking part. At this time, the outer end of the positioning rod does not protrude from the side of the handrail and is disengaged from the positioning hole. When locking is required, move the operating lever so that the locking part of the operating lever moves to the inner end of the positioning rod. Under the action of the locking part, the positioning rod moves outward and extends from the side of the handrail, inserting into the positioning hole to achieve positioning.

[0009] The armrest has at least two positioning holes. When the armrest is not unfolded, the positioning rod extends into one of the positioning holes, and when the armrest is fully unfolded, the positioning rod extends into the other positioning hole, effectively positioning the armrest in both states and improving its stability. During rotation, the unlocking part of the operating lever is positioned at the inner end of the positioning rod. This allows the operating lever to retract the armrest under the action of the first spring, preventing friction with the side of the mounting groove and thus avoiding wear on the car backrest.

[0010] In the above-mentioned car armrest positioning device, an installation hole is provided in the armrest along its length direction. One end of the installation hole is connected to a first guide hole, and the other end is connected to a second guide hole. The operating rod passes through the installation hole. One end of the operating rod has a limiting part that slides with the first guide hole. A second spring is provided between the limiting part and the end of the first guide hole near the second guide hole. The locking part is provided at the other end of the operating rod and slides in the second guide hole. Under the action of the second spring force, the locking part abuts against the end of the second guide hole near the first guide hole.

[0011] The second spring is sleeved on the operating rod, and the first guide hole passes through the end face of the free end of the handrail. Under the action of the second spring, the outer end face of the limiting part is flush with the end face of the free end of the handrail. The length of the limiting part is less than the length of the first guide hole, and the length of the locking part is less than the length of the second guide hole. When unlocking is required, the limiting part is pressed inward through the first guide hole, which will drive the operating rod and the locking part to move inward together. The locking part disengages from the support of the positioning rod. Under the action of the first spring, the positioning rod moves inward and abuts against the unlocking part located near the locking part, thereby unlocking the handrail. Then, while keeping the limiting part pressed down, the handrail is rotated.

[0012] In the above-mentioned car armrest positioning device, the inner end of the positioning rod is provided with a roller, the locking part is provided with a first guide groove, and the unlocking part is provided with a second guide groove. The first guide groove and the second guide groove are connected. When the operating rod moves, the roller rolls in the first guide groove / second guide groove.

[0013] By incorporating rollers, friction between the positioning rod and the operating rod can be reduced.

[0014] In the aforementioned car armrest positioning device, the first guide groove and the second guide groove are connected by an inclined guide groove. This facilitates the rolling of the roller, allowing the roller to easily enter the second guide groove from the first guide groove, or vice versa. The first guide groove, the inclined guide groove, and the second guide groove limit the roller's movement, preventing the positioning rod from rotating, and simultaneously limit the operating lever, preventing it from rotating.

[0015] The cross-sections of the positioning rod and the operating rod can be circular, square, or regular polygonal.

[0016] In the above-mentioned car armrest positioning device, a guide seat is fixed inside the armrest, the positioning rod is slidably disposed inside the guide seat, the middle part of the guide seat has a clearance hole for the operating rod to pass through, the portion of the positioning rod located in the clearance hole is provided with a limiting protrusion, and the first spring is located between the limiting protrusion and the guide seat.

[0017] The positioning rod is guided by the guide seat, which improves the stability of the positioning rod.

[0018] In the above-mentioned car armrest positioning device, there are two positioning rods symmetrically arranged on both sides of the operating rod, and each positioning rod is provided with a first spring and a roller.

[0019] In the aforementioned car armrest positioning device, the outer end of the positioning rod has a ball head. This facilitates the positioning rod's entry into the positioning hole, enabling rapid positioning.

[0020] Compared with existing technologies, this car armrest positioning device has the following advantages: it effectively positions the armrest in two states through the positioning rod and positioning hole, improving the stability of the armrest; during the rotation of the armrest, the unlocking part can be located at the inner end of the positioning rod, so that the operating rod retracts the armrest under the action of the first spring, without friction with the side of the mounting groove, and without wear on the car backrest; the structure is reasonably designed and easy to operate. Attached Figure Description

[0021] Figure 1 It is a cross-sectional view of the car's backrest and armrests.

[0022] Figure 2 This is a cross-sectional view of a car seat back.

[0023] Figure 3 This is a cross-sectional view of the handrail.

[0024] Figure 4 yes Figure 3 Enlarged schematic diagram of the unlocking and locking parts.

[0025] In the diagram, 1. Car backrest; 2. Armrest; 21. First guide hole; 22. Second guide hole; 3. Mounting groove; 4. Positioning rod; 41. Limiting protrusion; 42. Ball head; 5. Positioning hole; 6. Operating lever; 61. Locking part; 62. Unlocking part; 63. Limiting part; 64. First guide groove; 65. Second guide groove; 66. Angled guide groove; 7. First spring; 8. Second spring; 9. Roller; 10. Guide seat. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] The positioning device for this car armrest 2 is installed between the car backrest 1 and the armrest 2, such as Figure 1 and Figure 2 As shown, the car backrest 1 is provided with a mounting groove 3, and the armrest 2 is rotatably mounted in the mounting groove 3 via a pivot. Figure 3 and Figure 4 As shown, the positioning device includes a positioning rod 4 that is slidably disposed within the handrail 2 and extends along the width direction of the handrail 2, a positioning hole 5 that is disposed on the side wall of the mounting groove 3 and corresponds to the positioning rod 4, and an operating rod 6 that is slidably disposed within the handrail 2 and extends along the length direction of the handrail 2. The outer end of the positioning rod 4 has a ball head 42, and the operating rod 6 has a locking part 61 and an unlocking part 62. A first spring 7 that acts on the positioning rod 4 is sleeved on the positioning rod 4. The first spring 7 keeps the positioning rod 4 abutting against the operating rod 6. When the positioning rod 4 abuts against the locking part 61, the outer end of the positioning rod 4 extends into the positioning hole 5. When the positioning rod 4 abuts against the unlocking part 62, the positioning rod 4 is completely retracted into the handrail 2.

[0028] The width of the unlocking part 62 is smaller than the width of the locking part 61. When unlocking is required, the operating lever 6 is moved so that the unlocking part 62 of the operating lever 6 moves to the inner end of the positioning rod 4. Under the action of the first spring 7, the positioning rod 4 moves inward and abuts against the unlocking part 62. At this time, the outer end of the positioning rod 4 does not protrude from the side of the handrail 2 and is disengaged from the positioning hole 5. When locking is required, the operating lever 6 is moved so that the locking part 61 of the operating lever 6 moves to the inner end of the positioning rod 4. Under the action of the locking part 61, the positioning rod 4 moves outward and extends from the side of the handrail 2, inserting into the positioning hole 5 to achieve positioning.

[0029] Among them, there are at least two positioning holes 5. When the handrail 2 is not unfolded, the positioning rod 4 extends into one of the positioning holes 5, and when the handrail 2 is fully unfolded, the positioning rod 4 extends into the other positioning hole 5, so as to effectively position the handrail 2 in the two states and improve the stability of the handrail 2.

[0030] During the rotation of the armrest 2, the unlocking part 62 of the operating lever 6 can be located at the inner end of the positioning lever 4. In this way, the operating lever 6 retracts into the armrest 2 under the action of the first spring 7, so that it will not rub against the side of the mounting groove 3 and will not wear out the car backrest 1.

[0031] like Figure 3 As shown, a mounting hole is provided along the length of the handrail 2. One end of the mounting hole is connected to a first guide hole 21, which penetrates the end face of the free end of the handrail 2. The other end is connected to a second guide hole 22. An operating rod 6 passes through the mounting hole. One end of the operating rod 6 has a limiting part 63 that slides with the first guide hole 21. A second spring 8 is provided between the limiting part 63 and the end of the first guide hole 21 near the second guide hole 22. The second spring 8 is sleeved on the operating rod 6. A locking part 61 is provided at the other end of the operating rod 6 and slides within the second guide hole 22. Under the action of the second spring 8, the locking part 61 abuts against the end of the second guide hole 22 near the first guide hole 21. Under the action of the second spring 8, the outer end face of the limiting part 63 is flush with the end face of the free end of the handrail 2. The length of the limiting part 63 is less than the length of the first guide hole 21, and the length of the locking part 61 is less than the length of the second guide hole 22.

[0032] When unlocking is required, the first guide hole 21 is pressed inward to limit the part 63, which will drive the operating rod 6 and the locking part 61 to move inward together. The locking part 61 disengages from the support of the positioning rod 4. Under the action of the first spring 7, the positioning rod 4 moves inward and abuts against the unlocking part 62 located near the locking part 61, thereby unlocking the handrail 2. Then, while keeping the limit part 63 pressed down, the handrail 2 is rotated.

[0033] like Figure 4 As shown, the inner end of the positioning rod 4 is provided with a roller 9, the locking part 61 is provided with a first guide groove 64, and the unlocking part 62 is provided with a second guide groove 65. The first guide groove 64 and the second guide groove 65 are connected. When the operating rod 6 moves, the roller 9 rolls in the first guide groove 64 / second guide groove 65.

[0034] like Figure 4 As shown, the first guide groove 64 and the second guide groove 65 are connected by a transitional guide groove 66. This facilitates the rolling of the roller 9, allowing it to easily move from the first guide groove 64 into the second guide groove 65, or vice versa. The first guide groove 64, the inclined guide groove, and the second guide groove 65 limit the movement of the roller 9, preventing the positioning rod 4 from rotating, while also limiting the movement of the operating rod 6 to prevent it from rotating.

[0035] The cross-sections of the positioning rod 4 and the operating rod 6 can be circular, square, or regular polygonal.

[0036] like Figure 3 and Figure 4 As shown, a guide seat 10 is fixed inside the handrail 2, and the positioning rod 4 is slidably disposed inside the guide seat 10. The guide seat 10 has a clearance hole in the middle for the operating rod 6 to pass through. A limiting protrusion 41 is provided on the portion of the positioning rod 4 located in the clearance hole, and a first spring 7 is located between the limiting protrusion 41 and the guide seat 10. The guide seat 10 guides the positioning rod 4, improving the stability of the positioning rod 4.

[0037] like Figure 3 and Figure 4 As shown, there are two positioning rods 4, which are symmetrically arranged on both sides of the operating rod 6. Each positioning rod 4 is equipped with a first spring 7 and a roller 9.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A car armrest positioning device, disposed between a car backrest (1) and an armrest (2), wherein the car backrest (1) is provided with a mounting groove (3), and the armrest (2) is rotatably disposed in the mounting groove (3) via a pivot, characterized in that, The positioning device includes a positioning rod (4) that is slidably disposed in the handrail (2) and extends along the width direction of the handrail (2), a positioning hole (5) provided on the side wall of the mounting groove (3) corresponding to the positioning rod (4), and an operating rod (6) that is slidably disposed in the handrail (2) and extends along the length direction of the handrail (2). The operating rod (6) has a locking part (61) and an unlocking part (62). A first spring (7) acting on the positioning rod (4) is sleeved on the positioning rod (4). The first spring (7) keeps the positioning rod (4) against the operating rod (6). When the positioning rod (4) is against the locking part (61), the outer end of the positioning rod (4) extends into the positioning hole (5). When the positioning rod (4) is against the unlocking part (62), the positioning rod (4) is completely retracted into the handrail (2).

2. The positioning device for the car armrest (2) according to claim 1, characterized in that, The handrail (2) has a mounting hole along its length. One end of the mounting hole is connected to a first guide hole (21), and the other end is connected to a second guide hole (22). The operating rod (6) passes through the mounting hole. One end of the operating rod (6) has a limiting part (63) that slides with the first guide hole (21). A second spring (8) is provided between the limiting part (63) and the end of the first guide hole (21) near the second guide hole (22). The locking part (61) is provided at the other end of the operating rod (6) and slides in the second guide hole (22). Under the action of the elastic force of the second spring (8), the locking part (61) abuts against the end of the second guide hole (22) near the first guide hole (21).

3. The positioning device for the car armrest (2) according to claim 2, characterized in that, The inner end of the positioning rod (4) is provided with a roller (9), the locking part (61) is provided with a first guide groove (64), and the unlocking part (62) is provided with a second guide groove (65). The first guide groove (64) and the second guide groove (65) are connected. When the operating rod (6) moves, the roller (9) rolls in the first guide groove (64) / second guide groove (65).

4. The positioning device for the car armrest (2) according to claim 3, characterized in that, The first guide groove (64) and the second guide groove (65) are connected by an oblique guide groove (66).

5. The positioning device for the car armrest (2) according to claim 1, characterized in that, The handrail (2) is fixed with a guide seat (10), and the positioning rod (4) is slidably disposed in the guide seat (10). The guide seat (10) has a clearance hole in the middle for the operating rod (6) to pass through. The positioning rod (4) is provided with a limiting protrusion (41) on the part of the clearance hole. The first spring (7) is located between the limiting protrusion (41) and the guide seat (10).

6. The positioning device for the car armrest (2) according to claim 1, characterized in that, The positioning rods (4) are two in number and symmetrically arranged on both sides of the operating rod (6). Each positioning rod (4) is provided with a first spring (7) and a roller (9).

7. The positioning device for the car armrest (2) according to claim 1, characterized in that, The outer end of the positioning rod (4) has a ball head (42).

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