Handrail control mechanism and seat

Abstract

This utility model discloses an armrest control mechanism and a seat, including an armrest assembly and a pull cable. The armrest assembly has a mounting position, and a push switch is movably connected to the mounting position. A swing arm is provided between the push switch and the armrest assembly, and the pull cable is connected to the swing arm so that the range of motion of the pull cable and the pressing range of the push switch are independent of each other. By setting a swing arm connected to the pull cable between the armrest assembly and the push switch, the pull cable is freed from the restriction of the push switch. When the push switch presses the swing arm, the swing arm rotates and can link the pull cable to move within a larger range, achieving the predetermined stroke of the pull cable. At the same time, the push switch can also be made more compact, improving the aesthetic appearance of the seat.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to an armrest control mechanism and a seat. Background Technology

[0002] To meet the adjustment needs of chairs, most office chairs or ergonomic chairs have adjustment mechanisms in the seat. For example, some chairs have a control component in the chassis that corresponds to the top of the lifting gas spring to control the lifting switch at the top of the gas spring; some chairs also have a backrest that can rotate back and forth relative to the seat, and a locking mechanism is also installed in the chassis to control the locking and unlocking of the backrest tilt. Both the control component and the locking mechanism are mechanical control mechanisms, and corresponding switches are installed on the chair to control the mechanical control mechanisms.

[0003] To enhance the overall integrity and aesthetics of the seats, some seats use cable control to operate the mechanical control components or locking mechanisms at the seat. The cable passes through the chassis into the seat frame and then through the seat frame into the left or right armrest assembly. The armrest assembly usually has a push-button switch that is rotatably connected to the cable. When the push-button switch is pressed, the cable can be pulled to move and control the operation of the corresponding mechanical control mechanism.

[0004] like Figure 10 As shown, in order to ensure that the push switch can pull the cable with a large range of motion, the rotation angle of the push switch is increased in existing seats, so that the cable can be pulled a longer distance. However, this requires the push switch to maintain a large distance from the upper armrest surface of the armrest assembly, resulting in the push switch forming an abrupt tongue-shaped structure on the seat, which affects the appearance of the seat.

[0005] like Figure 11 As shown, if the push switch is rotated at a small angle, the travel of the push switch to move the cable is also very small, which cannot effectively control the mechanical control mechanism at the seat. If the length of the push switch is designed to be longer and the connection point between the cable and the push switch is as far away from the rotation point of the push switch as possible, although the travel of the cable can be increased, this will increase the size of the push switch, making the push switch appear more abrupt on the armrest assembly, and will also affect the appearance of the seat.

[0006] Therefore, a handrail control mechanism needs to be designed so that even a small push-button switch can allow the pull cable to have sufficient travel, while ensuring that the push-button switch does not create a strong abrupt feeling on the handrail assembly, thus combining operability and aesthetics. Summary of the Invention

[0007] This utility model provides an armrest control mechanism and a seat. By setting a swing arm connected to a pull cable between the armrest assembly and the push switch, the pull cable is freed from the restriction of the push switch. When the push switch presses the swing arm, the swing arm rotates and can move the pull cable in a larger range to achieve the predetermined travel of the pull cable. At the same time, the push switch can also be made smaller, improving the aesthetics of the seat.

[0008] The technical solution of this utility model is implemented as follows: A handrail control mechanism includes a handrail assembly and a pull cable. The handrail assembly has a mounting position, and a push switch is movably connected to the mounting position. A swing arm is provided between the push switch and the handrail assembly. The pull cable is connected to the swing arm so that the range of motion of the pull cable and the pressing range of the push switch are independent of each other. In the initial state, the swing arm has the freedom to swing in the direction of the pull cable's movement. Under the action of an external force, the push switch moves within a predetermined pressing range and squeezes the swing arm to swing, thereby pulling the pull cable, which is freed from the restraint of the push switch, to move. The range of motion of the pull cable is greater than the pressing range.

[0009] Preferably, one end of the swing arm is hinged to a push-button switch or handrail assembly, and the other end of the swing arm is used to connect to the pull cable; so that when the push-button switch presses the swing arm, the swing arm can rotate at a large angle and exert traction on the pull cable.

[0010] Preferably, the two ends of the swing arm are hinged to the handrail assembly and the push switch, respectively, forming a first hinge point near the handrail assembly and a second hinge point near the push switch. The connection point between the pull cable and the swing arm is the traction point. The distance between the traction point and the second hinge point is smaller than the distance between the traction point and the first hinge point. When the push switch presses the swing arm, the swing arm rotates to pull the pull cable. According to the lever principle, the closer the traction point is to the push switch, the greater the displacement change of the traction point, ensuring the travel of the pull cable.

[0011] Preferably, both the armrest assembly and the push switch have contact surfaces facing the swing arm. In the initial state, the angle between the swing arm and at least one of the contact surfaces is not a right angle, so that when the push switch moves and squeezes the swing arm, it forms a component force on the swing arm in the direction of the pull line movement; when the push switch forms a squeezing tendency on the swing arm, the swing arm can respond quickly and generate a swing.

[0012] Preferably, the end of the push switch facing the swing arm is provided with a receiving groove to accommodate the swing arm, and the swing arm swings in the receiving groove; the receiving groove can accommodate the swing arm, reduce the space it occupies between the push switch and the armrest assembly, so that the push switch can be as close as possible to the armrest assembly, further reducing the abruptness of the push switch on the armrest assembly.

[0013] Preferably, the push switch is provided with a groove for accommodating the pull cord, and the groove is connected to the receiving groove; the pull cord can move within the groove, avoiding excessive friction between the push switch and the pull cord, which would cause the pull cord to move unsmoothly.

[0014] Preferably, the handrail assembly includes a handrail body, a handrail bracket for supporting the handrail body, a mounting position on the handrail bracket, and a push-button switch that is rotatably or slidably connected to the mounting position.

[0015] Preferably, the push switch is rotatably connected to the armrest bracket; the maximum rotation angle of the push switch is less than the maximum swing angle of the swing arm.

[0016] Preferably, the push-button switch is symmetrically provided with a rotating shaft, and the armrest bracket is provided with a corresponding shaft hole, with the rotating shaft passing through the shaft hole.

[0017] Preferably, the push switch is slidably connected to the handrail bracket; the connection point between the swing arm and the pull line is the traction point, and the maximum sliding length of the push switch is less than the displacement length of the traction point when the swing arm swings.

[0018] Preferably, the push switch is provided with a sliding part symmetrically, and the armrest assembly is provided with a guide groove extending along the pressing direction of the push switch, with the sliding part slidably connected in the guide groove.

[0019] Preferably, the armrest support has a hollow structure, and the swing arm is set inside the armrest support. The mounting position has a mounting opening that corresponds to the position of the swing arm and is open to the outside. The push switch is matched and installed at the mounting opening position and seals the swing arm inside; to prevent debris from entering the armrest support, and at the same time to avoid the swing arm being exposed and affecting the appearance of the seat.

[0020] Preferably, the swing arm rotation angle range is 30°-60°.

[0021] A seat, including the aforementioned armrest control mechanism.

[0022] The beneficial effects of this utility model, which adopts the above technical solution, are as follows: In existing handrail control mechanisms, the pull cable is directly connected to the push-button switch, with the switch's movement driving the cable's movement. However, this results in the cable's travel being the same as its rotational travel. Alternatively, some push-button switches have a large rotation angle, but this creates a significant gap between the switch and the handrail, leading to an unsightly appearance. Other switches move the cable connection forward, away from the switch's rotating end, but achieving the desired travel requires a longer push-button switch. Long armrests can also make the armrests look unattractive. Therefore, this invention incorporates a swing arm between the push-button switch and the armrest assembly, connecting the pull cable to the swing arm. This way, the pull cable's travel is no longer restricted by the push-button switch's travel, allowing the swing arm to rotate and move the pull cable to a predetermined travel. The push-button switch acts only as an "actuator" for the swing arm's rotation and is no longer related to the pull cable's travel. As a result, the push-button switch can be designed to be smaller, reducing its obtrusiveness on the armrest assembly and making the seat's appearance more concise and aesthetically pleasing.

[0023] When one end of the swing arm is rotatably connected to the handrail assembly or the push-button switch, a hinge end is formed. The opposite end of the hinge end is connected to the pull cable, so that the connection point between the pull cable and the swing arm is as far away from the hinge end as possible. Similarly, when both ends of the swing arm are rotatably connected to the push-button switch and the handrail assembly respectively, the hinge end between the swing arm and the push-button switch will swing, so the connection point between the pull cable and the swing arm is closer to the hinge end formed by the push-button switch and the swing arm. This design makes the connection point between the pull cable and the swing arm as far away from the rotating end of the swing arm as possible, so that the arc displacement of the connection point is larger, the range of motion of the pull cable is amplified, and the pull cable has sufficient travel.

[0024] The push-button switch has a receiving groove, which allows the swing arm to swing within the receiving groove. This design minimizes the space occupied by the swing arm between the push-button switch and the armrest assembly, allowing the push-button switch to be as close to the armrest assembly as possible and reducing the abruptness of the push-button switch on the armrest assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the handrail control mechanism. Figure 2 This is a diagram showing the installation structure of the guy wire and the swing arm; Figure 3 A schematic diagram of the mounting opening on the handrail bracket; Figure 4 Exploded view of the handrail control mechanism; Figure 5 This is an enlarged cross-sectional view of the swing arm in its initial position within the handrail control mechanism. Figure 6 This is an enlarged cross-sectional view of the handrail control mechanism after the swing arm pulls the cable. Figure 7 This is a cross-sectional view showing the rotatable connection between the swing arm and the handrail assembly in Embodiment 2; Figure 8 This is a cross-sectional view of the push switch slidingly connected to the handrail bracket in Embodiment 3; Figure 9 This is a cross-sectional view of the two ends of the swing arm being rotatably connected to the push switch and the handrail assembly in Embodiment 4; Figure 10-11 The background section presents a schematic diagram of a push-button switch on an existing handrail. The attached figures are labeled as follows: 1-handrail assembly, 11-mounting port, 12-shaft hole, 13-sliding part, 14-guide groove, 2-pull cable, 3-press switch, 31-accommodating groove, 32-pull cable groove, 33-rotating shaft, 4-swing arm. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0028] This utility model has multiple embodiments, and the specific implementation methods are as follows: Example 1: As Figure 1-6As shown, this embodiment provides an armrest control mechanism, including an armrest assembly and a pull cable 2. The armrest assembly includes an armrest body and an armrest bracket 1 for supporting the armrest body. The armrest body supports the arm, and the armrest bracket is usually arranged at the lower end of the armrest body and is used to connect with the seat. The seat includes a seat assembly, which is usually provided with a mechanical adjustment mechanism. The mechanical adjustment mechanism is usually used to adjust or control the tilt and locking of the seat back, the control and locking of the seat's forward and backward sliding, the control and locking of the lifting gas spring at the lower end of the seat, etc. Such an adjustment mechanism usually has an adjustment switch, and the pull cable 2 is connected to the adjustment switch to pull the adjustment switch. At the same time, an elastic element is also installed on the seat assembly to drive the adjustment switch. The elastic element is usually a mechanical spring, so that the adjustment switch always has a tendency to return to its original position. A mounting position is provided on the armrest assembly, which can be located on the armrest bracket 1 or on the armrest body. A push switch 3 is movably connected to the mounting position. The push switch 3 is connected to the armrest body. A swing arm 4, which is a rod-shaped component, is provided between the handrail components. The pull cable 2 is connected to the swing arm 4 so that the range of motion of the pull cable 2 and the pressing range of the push switch 3 are independent of each other. This makes the travel of the pull cable 2 no longer limited by the range of motion of the push switch 3, and the range of motion of the pull cable 2 mainly depends on the swing range of the swing arm 4. At this time, the push switch 3 is only equivalent to an "actuator", so the size of the push switch 3 no longer needs to be designed to be very long. In the initial state, the swing arm 4 has the freedom to swing in the direction of the pull cable 2. Under the action of external force, the push switch 3 moves within the predetermined pressing range and squeezes the swing arm 4 to swing, so as to pull the pull cable 2, which is freed from the restraint of the push switch 3, to move. In this embodiment, the swing range of the swing arm 4 is greater than the range of motion of the push switch 3, so that the range of motion of the pull cable 2 is greater than the pressing range. While designing the size of the push switch 3 to be small, the swing arm 4 and the pull cable 2 are linked, increasing the range of motion of the pull cable 2 and meeting the usage requirements.

[0029] Furthermore, in this embodiment, to maximize the range of motion of the pull wire 2, such as... Figure 5-6 As shown, one end of the swing arm 4 is hinged to the push switch 3, and the other end of the swing arm 4 is used to connect to the pull cable 2. The end of the swing arm 4 connected to the pull cable is in contact with the handrail assembly. The end of the swing arm 4 that is hinged to the push switch 3 is the rotating end, and the other end is the swinging end. According to the lever principle, when the swing arm 4 swings, the longer the swing arm 4 is, the longer the arc trajectory generated by its swinging end is, which can better meet the travel of the pull cable 2. In this embodiment, the distance between the swinging end and the rotating end is the farthest. The pull cable 2 is connected to the swinging end, so that when the push switch 3 presses the swing arm 4, the swing arm 4 can rotate at a large angle and form a traction on the pull cable 2.

[0030] Furthermore, in this embodiment, both the armrest assembly and the push-button switch 3 are provided with contact surfaces facing the swing arm 4. These two contact surfaces are in contact with both ends of the swing arm 4. To ensure that the swing arm 4 can swing freely without jamming when the push-button switch 3 moves and squeezes the swing arm 4, in this embodiment, as follows: Figure 5 As shown, in the initial state, the angle between the swing arm 4 and at least one of the contact surfaces of the handrail control mechanism is not a right angle. That is, in the initial state, the swing arm 4 is inclined relative to at least one contact surface, so that the direction of movement of the push switch 3 after being forced is not parallel to the length direction of the swing arm 4, so as to retain the degree of freedom of the swing arm 4 to swing in the predetermined direction. For example, if the two contact surfaces are parallel, the swing arm 4 is not perpendicular to both contact surfaces. When the two contact surfaces are not parallel, the swing arm 4 can be not perpendicular to either of the two contact surfaces, or it can be not perpendicular to one of the contact surfaces. When the push switch 3 moves and squeezes the swing arm 4, the inclined design can make the push switch 3 form a component force on the swing arm 4 in the direction of movement of the pull line 2. When the push switch 3 forms a squeezing tendency on the swing arm 4, the swing arm 4 can respond quickly and swing.

[0031] Furthermore, to reduce the space occupied by the swing arm 4 between the push switch 3 and the handrail assembly, and to further limit the swing range of the swing arm 4, the push switch 3 has a receiving groove 31 at one end facing the swing arm 4 to accommodate the swing arm 4. One end of the swing arm 4 is hinged in the receiving groove 31, and the other end of the swing arm 4 protrudes out of the opening of the receiving groove 31 and contacts the handrail bracket 1. The swing arm 4 swings within the receiving groove 31. The receiving groove 31 can accommodate the swing arm 4, reducing the space it occupies between the push switch 3 and the handrail assembly, allowing the push switch 3 to be as close as possible to the handrail assembly, further reducing the space occupied by the push switch 3 in the handrail assembly. The abruptness of the component; the same receiving groove 31 has two limiting walls, one of which is located on the side of the swing arm 4 facing the direction of the pull line 2, which is the first limiting wall, and the other limiting wall is located on the side of the swing arm 4 in the direction of the reset, which is the second limiting wall. The second limiting wall is in an inclined state so that the swing arm has the freedom to swing towards the direction of the pull line 2 in the initial state; in the initial state, the elastic element at the adjusting mechanism pulls the pull line 2 and drives the swing arm 4 to contact the second limiting wall; after the external force presses the switch 3 to the position, the swing arm 4 swings and contacts the first limiting wall, restricting the swing arm 4 from continuing to swing.

[0032] Furthermore, one end of the swing arm 4 is rotatably connected to the receiving groove 31. If the other end of the swing arm 4 is directly connected to the pull cable 2, the pull cable 2 will inevitably bend during movement, and at the same time, it will generate a large frictional force with the push switch 3, which will easily cause wear. Figure 2As shown, in this embodiment, the push switch 3 is provided with a groove 32 for accommodating the pull wire 2. The groove 32 extends in a strip shape and is connected to the receiving groove 31. The groove 32 provides space for the pull wire 2, allowing the pull wire 2 to move within the groove 32, preventing the pull wire 2 from bending. The push switch 3 will also not cause significant friction to the pull wire 2, allowing the pull wire 2 to move smoothly.

[0033] Furthermore, most chair armrests have position adjustment functions, and the position of the armrest body can slide in the forward and backward direction or swing in the left and right direction. Therefore, in this embodiment, the mounting position is preferably set on the armrest bracket 1, so that even if the armrest body moves, it will not accidentally pull the pull cable 2; in this embodiment, the push switch 3 is rotatably connected to the armrest bracket 1, specifically, as Figure 2-4 As shown, the push switch 3 is symmetrically provided with a rotating shaft 33, and the armrest bracket 1 is provided with a corresponding shaft hole 12. The rotating shaft 33 passes through the shaft hole 12. In this embodiment, the maximum rotation angle of the push switch 3 is less than the maximum swing angle of the swing arm 4, so that the range of motion of the pull cable 2 is greater than the range of motion of the push switch 3, so that the pull cable 2 has sufficient travel.

[0034] Furthermore, in this embodiment, the armrest bracket 1 has a hollow structure, and the swing arm 4 is disposed inside the armrest bracket 1. The mounting position is provided with a mounting opening 11 that corresponds to the position of the swing arm 4 and is open to the outside. The shaft hole 12 is disposed inside the mounting opening 11 and inside the armrest bracket 1. During installation, the corresponding rotating shaft 33 is inserted into the shaft hole 12, so that the rotational connection marks between the push switch 3 and the armrest bracket 1 are also hidden. The push switch 3 is matched and installed at the mounting opening 11 and seals the swing arm 4 inside. This makes the swing arm 4 hidden inside the armrest bracket 1, preventing debris from entering the armrest bracket, and at the same time avoiding the swing arm 4 being exposed and affecting the appearance of the seat.

[0035] Furthermore, in this embodiment, the swing angle range of the swing arm 4 needs to be within a reasonable range. If the rotation angle of the swing arm 4 is too small, it will be difficult for the pull cable 2 to have sufficient travel. If the rotation angle of the swing arm 4 is too large, it will occupy a large space in the handrail bracket 1 and easily interfere with other mechanisms in the handrail bracket 1. At the same time, the receiving groove 31 on the push switch 3 also needs to be designed to be deeper, which is contrary to the miniaturization design purpose of the push switch 3. Therefore, in this embodiment, the rotation angle range of the swing arm 4 is 30°-60°. This can satisfy the travel of the pull cable 2 without making the swing arm 4 occupy too much space when swinging, thus ensuring the miniaturization design of the push switch 3.

[0036] Furthermore, this embodiment provides a seat (not shown) including the armrest control mechanism; the seat also includes a seat body (not shown), wherein the armrest components are symmetrically arranged on the left and right sides of the seat body, and the pull cable 2, the swing arm 4, and the push switch 3 are provided at at least one armrest component position to control the adjustment mechanism on the seat body; at the same time, since the seat body is provided with an elastic element acting as an adjustment switch, after the external force on the push switch 3 is removed, under the action of the elastic element, the pull cable 2 will return to the initial position in the opposite direction and drive the swing arm 4 to return to the opposite direction.

[0037] Example 2: Figure 7 As shown, the difference from the above embodiment is that in this embodiment, one end of the swing arm 4 is hinged to the handrail assembly, and the other end of the swing arm 4 is used to connect to the pull line 2. Specifically, one end of the swing arm 4 is hinged to the handrail bracket 1, and the other end is in contact with the push switch 3. In this way, the end of the swing arm 4 that is hinged to the handrail bracket 1 is the rotating connection end, and the other end is the swinging end. When the push switch 3 presses the swing arm 4, the end of the swing arm 4 swings toward the push switch 3 and pulls the pull line 2 to move, so as to achieve the same effect as in the above embodiment.

[0038] Example 3: As Figure 8 As shown, the difference from the above embodiment is that the push switch 3 in this embodiment is slidably connected to the handrail bracket 1; that is, it provides another movable connection method between the push switch 3 and the handrail assembly; in this embodiment, the push switch 3 rotates by its own sliding pressure on the swing arm 4, wherein the connection position between the swing arm and the pull line is the traction point, and the maximum sliding length of the push switch is less than the displacement length of the traction point when the swing arm 4 swings, so that the range of motion of the pull line 2 is greater than the range of motion of the push switch 3, so that the pull line 2 has sufficient travel.

[0039] Furthermore, in this embodiment, the push switch 3 and the armrest assembly are slidably connected as follows: the push switch 3 is symmetrically provided with a sliding part 13, and the armrest assembly is correspondingly provided with a guide groove 14 extending along the pressing direction of the push switch 3. The sliding part 13 is slidably connected in the guide groove 14, so that the push switch 3 slides in a straight trajectory and forms a squeeze on the swing arm 4.

[0040] Example 4: Figure 9As shown, the difference from the above embodiment is that in this embodiment, the two ends of the swing arm 4 are respectively hinged to the handrail assembly and the push switch 3, forming a first hinge point near the handrail assembly and a second hinge point near the push switch 3. The connection position between the pull cable 2 and the swing arm 4 is the traction point. In the initial state, the swing arm 4 is in an inclined state, so that the second hinge point is closer to the traction direction of the pull cable 2. In order to maximize the travel of the pull cable 2, the distance between the traction point and the second hinge point is smaller than the distance between the traction point and the first hinge point. That is to say, the traction point is closer to the push switch 3. When the push switch 3 squeezes the swing arm 4, the swing arm 4 rotates, and the end of the swing arm 4 that is hinged to the push switch 3 swings, pulling the pull cable 2 to move. According to the lever principle, the closer the traction point is to the push switch 3, the longer the arc trajectory generated by the traction point when the swing arm 4 swings, which can increase the displacement change of the traction point and ensure that the pull cable 2 has sufficient travel to achieve the same effect as in the above embodiment.

[0041] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A handrail control mechanism, characterized in that, The device includes a handrail assembly and a pull cable (2). The handrail assembly has a mounting position, and a push switch (3) is movably connected to the mounting position. A swing arm (4) is provided between the push switch (3) and the handrail assembly. The pull cable (2) is connected to the swing arm (4) so ​​that the range of motion of the pull cable (2) and the pressing range of the push switch (3) are independent of each other. In the initial state, the swing arm (4) has the freedom to swing in the direction of the pull cable (2). Under the action of external force, the push switch (3) moves within the predetermined pressing range and squeezes the swing arm (4) to swing, so as to pull the pull cable (2) which is freed from the restraint of the push switch (3) and the range of motion of the pull cable (2) is greater than the pressing range.

2. The handrail control mechanism according to claim 1, characterized in that: One end of the swing arm (4) is hinged to the push switch (3) or the handrail assembly, and the other end of the swing arm (4) is used to connect to the pull wire (2).

3. The handrail control mechanism according to claim 1, characterized in that: The two ends of the swing arm (4) are respectively hinged to the handrail assembly and the push switch (3), forming a first hinge point close to the handrail assembly and a second hinge point close to the push switch (3). The connection position of the pull line (2) and the swing arm (4) is the traction point. The distance between the traction point and the second hinge point is less than the distance between the traction point and the first hinge point.

4. The handrail control mechanism according to any one of claims 1-3, characterized in that: Both the armrest assembly and the push switch (3) have contact surfaces facing the swing arm (4). In the initial state, the angle between the swing arm (4) and at least one of the contact surfaces is not a right angle, so that when the push switch (3) moves and squeezes the swing arm (4), a component force is formed on the swing arm (4) in the direction of the pull line (2).

5. The handrail control mechanism according to any one of claims 1-3, characterized in that: The push switch (3) has a receiving groove (31) at one end facing the swing arm (4) to accommodate the swing arm (4), and the swing arm (4) swings in the receiving groove (31).

6. The handrail control mechanism according to claim 5, characterized in that: The push switch (3) is provided with a wire groove (32) for placing the pull wire (2), and the wire groove (32) is connected to the receiving groove (31).

7. The handrail control mechanism according to any one of claims 1-3, characterized in that: The handrail assembly includes a handrail body and a handrail bracket (1) for supporting the handrail body. The mounting position is set on the handrail bracket (1), and the push switch (3) is rotatably or slidably connected to the mounting position.

8. The handrail control mechanism according to claim 7, characterized in that: The push switch (3) is rotatably connected to the handrail bracket (1); the maximum rotation angle of the push switch (3) is less than the maximum swing angle of the swing arm (4).

9. The handrail control mechanism according to claim 8, characterized in that: The push switch (3) is symmetrically provided with a rotating shaft (33), and the armrest bracket (1) is provided with a corresponding shaft hole (12). The rotating shaft (33) passes through the shaft hole (12).

10. The handrail control mechanism according to claim 7, characterized in that: The push switch (3) is slidably connected to the handrail bracket (1); the connection position between the swing arm and the pull line is the traction point, and the maximum sliding length of the push switch is less than the displacement length of the traction point when the swing arm (4) swings.

11. The handrail control mechanism according to claim 10, characterized in that: The push switch (3) is symmetrically provided with a sliding part (13), and the armrest assembly is provided with a guide groove (14) extending along the pressing direction of the push switch (3). The sliding part (13) is slidably connected in the guide groove (14).

12. The handrail control mechanism according to claim 7, characterized in that: The handrail bracket (1) is a hollow structure. The swing arm (4) is set inside the handrail bracket (1). The mounting position is provided with a mounting port (11) that corresponds to the position of the swing arm (4) and is open to the outside. The push switch (3) is matched and installed at the mounting port (11) and seals the swing arm (4) inside.

13. The handrail control mechanism according to claim 1, characterized in that: The range of rotation angle for the swing arm (4) is 30°-60°.

14. A type of seat, characterized in that, Includes the handrail control mechanism as described in claim 1.

Images