Rotary armrest suitable for seat and seat

Abstract

The invention relates to the field of household article machinery, in particular to a structural design of a seat armrest part. According to the technical scheme, the rotating armrest suitable for the seat comprises a bottom table and an armrest assembly, and further comprises a first table connected with the armrest assembly and a second table connected with the first table, the two ends of the transfer arm are rotationally connected with the head table and the bottom table respectively; the first table and the bottom table are each provided with a clamping mechanism. The invention aims to provide the rotating armrest suitable for the seat and the seat, which are high in universality, light in weight and suitable for designing a light seat product; the position of the armrest is convenient and fast to adjust, the flexibility is high, and the adaptive adjustment of the armrest position and the armrest posture can be flexibly achieved in a large-range position area.

Description

Technical Field

[0001] The invention relates to the field of household goods machinery, and in particular to the structural design of a seat armrest. Background Art

[0002] Seats are common support carriers for sitting and lying positions, and are widely used in people's daily life and office, such as single chairs and sofas. Generally, seats include functional components such as benches, chair backs, armrests, and support legs. With the progress of the times and the improvement of living standards, in addition to the traditional support function, seats have more requirements for functionality and comfort.

[0003] Among the various parts of the seat, the armrest is a functional component that supports the human body's hands, arms, and elbows. In the original design, the armrests are often fixed armrests, but such armrest structures have a single support effect and can only be installed on seats where the user's posture is fixed and not adjusted. When the seat has a folded back and waist, or even supports lying flat, this type of fixed armrest cannot provide comfortable support for the user's elbows.

[0004] Furthermore, some products use an adjustable armrest design. For example, the Chinese patent document with announcement number CN201520490561.4 discloses a lifting armrest suitable for a seat. This armrest can rely on a driving component such as a cylinder to drive an X-frame to move. The armrest is installed on the X-frame, thereby achieving a change in the position of the armrest.

[0005] However, this technical solution has the following defects: First, the movement trajectory of the X-frame is fixed, and accordingly, the movement trajectory of the armrest is also fixed, and flexible position adjustment is impossible. Secondly, the X-frame is often heavy, so the driving force must come from driving structures such as cylinders and motors, which not only increases the manufacturing cost, but also increases the weight of the seat, making it unsuitable for use in convenient and portable seat products. Thirdly, the seat adjustment process of this structure is complicated, and users are often required to get off the chair to operate the cylinder and motor, which results in a poor experience during the adjustment process. Summary of the invention

[0006] The purpose of the present invention is to provide a rotating armrest suitable for a seat and a seat, which has strong versatility, light weight, and can be suitable for lightweight seat products; the position of the armrest is easy to adjust and has high flexibility, and can flexibly achieve adaptive adjustment of the armrest position and armrest posture in a larger range of position areas.

[0007] The present invention is realized by the following technical scheme: A rotating armrest suitable for a seat, comprising a base and an armrest assembly, and further comprising: a first unit connected to the handrail assembly; A transfer arm, two ends of which are rotatably connected to the first platform and the bottom platform respectively; The first platform and the bottom platform are each provided with a set of cards and mechanisms; A set of locking mechanisms are respectively provided at the head and tail ends of the transfer arm, and the locking mechanisms are used to cooperate with the card and mechanism to lock the rotation angle of the transfer arm relative to the head platform and the base platform; A traction member, wherein there are at least two traction members, one end of each traction member is connected to the locking mechanism, and is used to pull the locking mechanism closer to or away from the card and mechanism.

[0008] As a preferred embodiment of the present invention, the locking mechanism includes a locking block, which includes locking teeth; the card and mechanism includes a card and a plate, which includes locking teeth engaged with the locking teeth, and the traction member is connected to the locking block.

[0009] As a preferred embodiment of the present invention, the locking mechanism further includes a spring, one end of the spring is connected to the locking block, and the other end of the spring is connected to the transfer arm.

[0010] As a preferred embodiment of the present invention, the transfer arm includes a table accommodating groove for accommodating the first table.

[0011] As a preferred embodiment of the present invention, the first stage includes a protruding piece, and the transfer arm includes a limiting groove cooperating with the protruding piece, and the protruding piece moves in the limiting groove to limit the maximum flipping angle of the first stage relative to the transfer arm.

[0012] As a preferred embodiment of the present invention, it also includes a wrench assembly installed on the handrail assembly, and the wrench assembly is connected to the traction member.

[0013] As a preferred embodiment of the present invention, the traction member is a traction rope.

[0014] As a preferred embodiment of the present invention, the wrench assembly includes a wrench plate, a wrench coupling connected to the wrench plate and a rope hook connected to the wrench plate, the traction rope is installed in the rope hook, and the wrench coupling is rotatably connected to the handrail assembly.

[0015] As a preferred embodiment of the present invention, the transfer arm is provided with a rope guide groove for the two traction ropes to pass through.

[0016] As a preferred embodiment of the present invention, it also includes a connecting seat, and the base is rotatably connected to the connecting seat and rotates horizontally relative to the connecting seat.

[0017] As a preferred embodiment of the present invention, the connecting seat includes a middle main seat, the middle main seat includes a connecting surface and a concave cavity, and the base includes an insertion platform for inserting into the concave cavity.

[0018] As a preferred embodiment of the present invention, the insertion platform is in the shape of a truncated cone, and its cross section gradually becomes smaller in the vertical downward direction.

[0019] As a preferred embodiment of the present invention, the middle main seat includes a ball pin, and the base includes a matching ring, and the position of the base relative to the connecting seat is fixed by the ball pin being ejected into the matching ring.

[0020] A chair comprises the rotating armrest suitable for the chair, a stool, a waist support and a chair frame, wherein the base is connected to the chair frame.

[0021] In summary, the present invention has the following beneficial effects: 1. Through the operation of two traction parts, the two positions of "first platform and transfer arm" and "bottom platform and transfer arm" can be switched between locked / unlocked states, realizing "two-position flipping". The position and posture of the armrest assembly can be adjusted more flexibly.

[0022] 2. The flipping method does not rely on heavy frames and cylinders, and users can operate it with their bare hands, which reduces the overall weight of the entire armrest and the entire seat.

[0023] 3. Through the wrench assembly, the user can switch the status of two positions with one hand, making it more convenient to adjust the position and posture of the armrest assembly.

[0024] 4. The operation area is at the back, the rope hook is in the middle, and the wrench shaft is at the front, which saves the user's hands and makes the operation feel light; the displacement distance of the locking block is short, and the stroke design of the component can be short, which is more conducive to the small size optimization of the component.

[0025] 5. The entire base can be rotated in the horizontal circular direction relative to the connecting seat, and the position locking is flexible and convenient.

[0026] 6. The downward retracted design of the extension table saves the volume of the lower part of the entire device, making it beautiful and compact; the central main seat gives the base a vertical upward supporting force, improving the supporting stability of the base.

[0027] 7. The protruding piece contacts the wall of the limiting groove, thereby limiting the maximum turning angle of the first platform relative to the connecting arm and the maximum turning angle of the bottom platform relative to the connecting arm, thereby enhancing the controllability of the stroke of the position adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of Example 1; Figure 2 yes Figure 1 A schematic diagram behind the housing that hides the adapter arm; Figure 3 This is an exploded diagram of the base platform; Figure 4 It is a schematic diagram of the connection between the first unit and the transfer arm; Figure 5 yes Figure 4 A side cross-sectional view after the position of the connection; Figure 6 is a schematic diagram of a wrench assembly; Figure 7 It is a flip schematic diagram of Example 1.

[0029] In the figure: 1. Connecting seat, 11. Seat shell, 12. Middle main seat, 121. Connecting surface, 122. Concave cavity, 123. Marble pin, 2. Base, 21. Matching ring, 22. Inserting platform, 3. Transfer arm, 31. Main body, 311. Platform groove, 4. First platform, 41. Protruding piece, 5. Armrest assembly, 6. Wrench assembly, 61. Wrench plate, 62. Wrench coupling, 63. Rope hook, 7. Rotating shaft, 8. Locking mechanism, 81. Locking block, 811. Locking tooth, 82. Spring, 9. Card and mechanism, 91. Card and sheet, 911. Card tooth, 10. Traction piece. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0032] Embodiment 1, as Figure 1 As shown, it includes several main mechanism components, namely, a connecting base 1, a base 2, a transfer arm 3, a head 4, an armrest assembly 5, and a wrench assembly 6. Figure 3 As shown, the connecting seat 1 is a component connected to the seat, specifically, it includes a bottom shell 11 and a middle main seat 12, and the middle main seat 12 includes a vertical plane, a connecting surface 121. The connecting surface 121 is used to connect with the frame of the seat. The upper surface of the middle main seat 12 includes a concave cavity 122, and the extension platform 22 extends into the cavity 122. In this embodiment, the extension platform 22 is a truncated cone that shrinks downward. Such a downward shrinking design, on the one hand, saves the volume of the lower part of the entire device, and is beautiful and compact. On the other hand, the circular design facilitates the smoothness of the horizontal circular rotation of the base 2, and the shrinking design enables the middle main seat 12 to provide the base 2 with a vertical upward supporting component, thereby improving the support stability of the base 2.

[0033] The entire base 2 can rotate in the horizontal circular direction relative to the connecting seat 1, and the position locking is achieved by the marble pin 123. The base 2 includes a circular matching ring 21, which is provided with a plurality of circular alignment holes. When the base 2 rotates in a circular direction relative to the connecting seat 1, the marble pin 123 pops into the alignment hole to complete the position determination of the two. When it is necessary to rotate again, the user only needs to use a little more force to rotate the base 2 to overcome the elastic force of the marble pin 123, and then it can be rotated again, which is flexible and convenient.

[0034] like Figure 3 As shown, in order to facilitate the connection between the base 2 and the connecting arm 3, the base 2 can be made into a split form. The rotating shaft 7 passes through the base 2 and the connecting arm 3, and the two rotate with the rotating shaft 7 as the rotating axis. The connecting arm 3 and the head 4 also rotate with the same rotating structure. Figure 2 As shown, the connecting arm 3 and the first platform 4 rely on the locking mechanism 8 and the locking mechanism 9 to achieve relative locking of the rotational position, and the connecting arm 3 and the base 2 also rely on the same structure and principle. The following takes the structure of the first platform 4 and the connecting arm 3 as an example for explanation.

[0035] like Figure 4 and Figure 5 As shown, the transfer arm 3 includes a main body 31 and an outer shell of the transfer arm. After the outer shell is hidden, as shown in FIG. Figure 4 As shown. The overall shape of the first platform 4 is disc-shaped, and the upper part of the main body 31 is provided with a platform receiving groove 311. After installation, the first platform 4 is located in the platform receiving groove 311. When the two rotate relative to each other, there is a protruding lug 411 on the first platform 4, which will move in the limiting groove in the main body 31. Through the shape design of the limiting groove, the lug 411 conflicts with the groove wall of the limiting groove, thereby limiting the maximum flipping angle of the first platform 4 relative to the connecting arm 3. The same structural principle is also used to limit the flipping angle of the connecting arm 3 and the base 2, which will not be repeated here. The traction member 10 can be in the form of a traction rod, a traction chain, etc. In the present embodiment, a traction rope is used. There are two traction ropes, which are respectively connected to two sets of locking mechanisms 8. As shown Figure 5 As shown, the front end of the traction rope is connected to the locking block 81, which includes a plurality of locking teeth 811. A card and mechanism 9 is installed on the first station 4, which includes a card and sheet 91, which includes a plurality of locking teeth 911. When the user pulls the traction rope, the locking block 81 moves, the locking teeth 811 and the locking teeth 911 are disengaged, and the first station 4 and the transfer arm 3 are in an unlocked state, and the angle between the two can be flexibly adjusted. When the user releases the traction rope, one end of the spring 82 is connected and abutted against the main body 31, and the other end is connected to the locking block 81, thereby applying elastic force to the locking block 81 to reset, and the locking teeth 911 and the locking teeth 811 bite each other, and the position of the first station 4 and the transfer arm 3 is locked.

[0036] Therefore, by operating the two traction members 10, the two positions of "the first platform 4 and the transfer arm 3" and "the bottom platform 2 and the transfer arm 3" can be switched between locked / unlocked states, thus realizing "two-position flipping". Figure 1 and Figure 7 As shown, on the one hand, the position and posture of the armrest assembly 5 can be adjusted more flexibly; on the other hand, such a flipping method does not need to rely on a heavy frame and a cylinder, and the user can operate it with his bare hands, thereby reducing the overall weight of the entire armrest and the entire seat.

[0037] Further, such as Figure 6 As shown, the design of the wrench assembly 6 further improves the convenience of operation. The wrench plate 61 is arranged horizontally as a whole, and a wrench coupling shaft 62 is arranged at its head end for rotational connection with the handrail assembly 5. A rope hook 63 is arranged on the lower surface of the wrench plate 61, and two traction ropes are connected to the rope hook 63 together. The rear end of the wrench plate 61 is an operation area for hand operation. With such a design, on the one hand, the user can realize the state switching of the two positions described above with one hand operation, and realize the position and posture of the handrail assembly 5 to be adjusted more conveniently. On the other hand, the operation area is at the back, the rope hook 63 is in the middle, and the wrench coupling shaft 62 is at the front, that is, the distance from the operation area to the wrench coupling shaft 62 is greater than the distance from the rope hook 63 to the wrench coupling shaft 62, so that the user's hand is more labor-saving and the operation feels light. The hand movement range is large, and the displacement distance of the locking block 81 is short, so the stroke design of the component can be short, which is more conducive to the small size optimization of the component.

Claims

1. A rotating armrest suitable for a seat, comprising a base (2) and an armrest assembly (5), characterized in that: The invention also comprises: a first platform (4) connected to the armrest assembly (5); a transfer arm (3), the two ends of the transfer arm (3) being rotatably connected to the first platform (4) and the base platform (2) respectively; a group of cards and mechanisms (9) being provided on the first platform (4) and the base platform (2); a group of locking mechanisms (8) being provided at the head and tail ends of the transfer arm (3), the locking mechanisms (8) being used to cooperate with the cards and mechanisms (9) so as to lock the rotation angle of the transfer arm (3) relative to the first platform (4) and relative to the base platform (2); and a traction member (10), the traction members (10) being at least two, one end of each traction member (10) being connected to the locking mechanism (8) and being used to pull the locking mechanism (8) closer to or away from the cards and mechanisms (9).

2. A rotatable armrest suitable for a seat according to claim 1, characterized in that: The locking mechanism (8) comprises a locking block (81), the locking block (81) comprising a locking tooth (811); the locking mechanism (9) comprises a locking plate (91), the locking plate (91) comprising a locking tooth (911) meshing with the locking tooth (811), and the traction member (10) is connected to the locking block (81).

3. The rotatable armrest for a seat according to claim 1, characterized in that: The locking mechanism (8) further comprises a spring (82), one end of the spring (82) being connected to the locking block (81) and the other end of the spring (82) being connected to the transfer arm (3).

4. The rotatable armrest for a seat according to claim 1, characterized in that: The transfer arm (3) comprises a table accommodating groove (311) for accommodating the first table (4).

5. The rotatable armrest for a seat according to claim 4, characterized in that: The first platform (4) comprises a protruding piece (41), and the transfer arm (3) comprises a limiting groove cooperating with the protruding piece (41), and the protruding piece (41) moves in the limiting groove to limit the maximum turning angle of the first platform (4) relative to the transfer arm (3).

6. The rotatable armrest for a seat according to claim 1, characterized in that: It also comprises a wrench assembly (6) mounted on the handrail assembly (5), wherein the wrench assembly (6) is connected to the traction member (10).

7. A rotatable armrest suitable for a seat according to claim 6, characterized in that: The traction member (10) is a traction rope.

8. The rotatable armrest for a seat according to claim 7, characterized in that: The wrench assembly (6) comprises a wrench plate (61), a wrench coupling shaft (62) connected to the wrench plate (61), and a rope hook (63) connected to the wrench plate (61); the traction rope is installed in the rope hook (63); and the wrench coupling shaft (62) is rotatably connected to the handrail assembly (5).

9. The rotatable armrest for a seat according to claim 7, characterized in that: The wrench plate (61) comprises an operating area for user hand operation, and the distance from the operating area to the wrench connecting shaft (62) is greater than the distance from the connecting rope hook (63) to the wrench connecting shaft (62).

10. The rotatable armrest for a seat according to claim 6, characterized in that: The transfer arm (3) is provided with a rope guide groove for the two traction ropes to pass through.

11. A rotatable armrest suitable for a seat according to any one of claims 1 to 10, characterized in that: It also comprises a connecting seat (1), the base (2) being rotatably connected to the connecting seat (1) and being rotatable in a horizontal direction relative to the connecting seat (1).

12. A rotatable armrest suitable for a seat according to claim 11, characterized in that: The connecting seat (1) comprises a central main seat (12), the central main seat (12) comprises a connecting surface (121) and a concave cavity (122), and the base (2) comprises an insertion platform (22) for inserting into the concave cavity (122).

13. The rotatable armrest for a seat according to claim 12, characterized in that: The insertion platform (22) is in the shape of a truncated cone, and its cross section gradually becomes smaller in the vertical downward direction.

14. The rotatable armrest for a seat according to claim 11, characterized in that: The middle main seat (12) includes a marble pin (123), and the base (2) includes a matching ring (21). The marble pin (123) is ejected into the matching ring (21) to fix the position of the base (2) relative to the connecting seat (1).

15. A seat, characterized in that: It comprises a rotatable armrest suitable for a seat as described in any one of claims 1 to 14, and also comprises a stool, a lumbar support and a seat frame, wherein the base (2) is connected to the seat frame.

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