Handrail device with different states

Abstract

The utility model discloses a handrail device with different states, including first, second supporting piece and movement mechanism, first supporting piece is rotated and set up on second supporting piece through movement mechanism, and the device has two states of superposition and unfolding, under the superposition state, first supporting piece is stacked in the upper side of second supporting piece, and the surface of both is attached, when unfolding, first supporting piece moves to the side of second supporting piece and is side by side, and two supporting surfaces jointly constitute the article surface, movement mechanism can make first supporting piece produce displacement relative to second supporting piece, and its movement track is approximately arc, and can guarantee that two supporting pieces keep parallel under different states, the device is the conventional handrail in the superposition state, and turns into small table board in the unfolding state, realizes function conversion through deformation, does not need additional storage space, retains the appearance and function of handrail, and has portability and simplicity.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to a handrail device with different states. Background Technology

[0002] In modern life, the multi-functionality of chairs is becoming increasingly prominent. Taking the armrests of office chairs as an example, the position of existing chair armrests can generally be adjusted to meet people's usage needs. However, the most important function of existing armrests is to support the human arm. On this basis, and considering cost factors, the armrest surface is uniformly long and thin. This shape of armrest can effectively achieve the function of supporting the human arm at a lower cost, so manufacturers have always adhered to this design.

[0003] In some situations, such as small meetings in an office that are not held at a conference table, people who want to take notes have to raise their arms and write on their notebooks with their hands suspended in the air. Although there are armrests to support their arms, it is not convenient to write and is not as comfortable as placing the notebook on the table. Moreover, maintaining this posture for a long time can be very tiring.

[0004] Take sofa armrests as another example. Sofa armrests are generally larger and usually consist of block-shaped boxes, with a long and narrow surface. However, some sofas have hidden flip-out trays within the armrests. Users can open the armrest, rotate the tray upwards, and then rotate it horizontally. They can then place their belongings on the tray, as seen in some movie theater sofas. Of course, some trays are designed to fold to accommodate different storage spaces.

[0005] Office chairs, due to their portability and simplicity, do not have enough space in their armrests to accommodate a small table, thus they cannot be used to place items. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model provides a handrail device with different states, including a first support member, a second support member, and a motion mechanism. The first support member is rotatably mounted on the second support member via the motion mechanism, and the device has two states: stacked and unfolded. In the stacked state, the first support member is stacked on top of the second support member, and their surfaces are in contact. In the unfolded state, the first support member moves to the side of the second support member and sits side by side, with the two support surfaces forming a placement surface. The motion mechanism can cause the first support member to move relative to the second support member, and its movement trajectory is approximately arc-shaped, ensuring that the two support members remain parallel in different states. In the stacked state, the device functions as a regular handrail, and in the unfolded state, it transforms into a small table. This functional conversion is achieved through deformation, requiring no additional storage space. It retains the shape and function of a handrail while also being portable and simple.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A handrail device with different states includes a first support member and a second support member. A motion mechanism is rotatably provided on the second support member, and the first support member is rotatably mounted on the motion mechanism. The upper surface of the first support member is a first support surface, and the upper surface of the second support member is a second support surface. The handrail device has a stacked state and an unfolded state. In the stacked state, the first support member is stacked on top of the second support member, and the lower surface of the first support member is in contact with the second support surface. In the unfolded state, the first support member is located beside the second support member, and the two are side by side along the width direction. The first support surface and the second support surface together form a placement surface. The motion mechanism is configured such that when switching between the stacked state and the unfolded state, the first support member is displaced relative to the second support member through the motion mechanism.

[0009] The motion mechanism is rotatably connected to both the first and second support members. However, the first support member is not merely rotated or translated relative to the second support member. In this design, the first support member, relying on the flexibility of the motion mechanism, can undergo overall displacement relative to the second support member. The movement trajectory is roughly arc-shaped, allowing the first support member to switch positions between above and beside the second support member. Furthermore, it can remain parallel to the second support member when above or beside it (the first support member remains horizontal when the second support member is horizontal). This allows the handrail device to have both a stacked and unfolded state. In the stacked state, the handrail device functions as a regular handrail, supporting the human arm. In the unfolded state, the handrail device becomes a small table for placing items. When used as a handrail or a small table, the handrail device generally remains horizontal, but some tilting is also normal.

[0010] The motion mechanism can change the position of the first support member between above and beside the second support member while keeping the first support member and the second support member parallel, that is, without the first support member rotating; or, even if the first support member rotates during the state switching process, it can still keep the first support member and the second support member parallel in the stacked state and the unfolded state; this requires the specific structure below.

[0011] This armrest device maintains the shape and function of a conventional armrest while transforming into a small table. Because it is achieved through deformation, there is no need to accommodate or hide the small table, thus maintaining the portability and simplicity of the office chair armrest.

[0012] Preferably, the lower surface of the first support member is provided with a first receiving groove from bottom to top, and the first receiving groove is configured to avoid a movement mechanism; the second support surface is provided with a second receiving groove from top to bottom, and the second receiving groove is configured to avoid a movement mechanism.

[0013] Preferably, the end face of the first receiving groove includes a first stacking limiting portion and a first unfolding limiting portion, and the end face of the second receiving groove includes a second stacking limiting portion and a second unfolding limiting portion. In the stacked state, the motion mechanism abuts against the first stacking limiting portion and the second stacking limiting portion respectively, making the first support member and the second support member parallel. In the unfolded state, the motion mechanism abuts against the first unfolding limiting portion and the second unfolding limiting portion respectively, making the first support member and the second support member parallel. This ensures that the first support member is parallel to the second support member in both the stacked and unfolded states, so that the handrail device can form a corresponding and normally usable plane in both states.

[0014] Preferably, the first superimposed limiting part, the first unfolding limiting part, the second superimposed limiting part, and the second unfolding limiting part are all inclined surfaces.

[0015] Preferably, the motion mechanism includes a slide groove and a connecting rod. The slide groove is formed on one end face of either the first or second receiving groove, one end of the connecting rod is rotatably disposed on the end face of the other receiving groove, and the other end of the connecting rod is disposed in the slide groove. In the stacked state, the connecting rod is located in both the first and second receiving grooves. The slide groove is arranged in the left-right direction, and the connecting rod slides and rotates within the slide groove. The slide groove allows the first support member to slide in the left-right direction, thereby adjusting its position relative to the second support member. Especially during state switching, it can avoid the second support member, thus allowing for unobstructed movement. With sufficiently precise dimensional adjustments, the motion mechanism can consist solely of a double-ended rotating connecting rod, without the need for a slide groove.

[0016] Preferably, the slide groove is disposed on the wall of the first receiving groove, the first overlapping limiting part and the first unfolding limiting part are mutually disjointed inclined surfaces, and the second overlapping limiting part and the second unfolding limiting part are continuous inclined surfaces. During state switching, the connecting rod rotates relative to the second supporting part as the first supporting part moves; the presence of the slide groove causes the positions of the first overlapping limiting part and the second overlapping limiting part to deviate, thus disconnecting them; while the second overlapping limiting part and the second unfolding limiting part can be continuous inclined surfaces.

[0017] Preferably, the connecting rod has two pivots protruding in the front-rear direction at each end. The connecting rod and its pivots are integrally formed, resulting in a simple structure.

[0018] Preferably, the motion mechanism includes at least two links, and the motion mechanism, together with the first and second support members, forms a four-bar linkage. The four-bar linkage can also achieve the same motion trajectory and effect as the first support member.

[0019] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0020] The motion mechanism is rotatably connected to both the first and second support members. However, the first support member is not merely rotated or translated relative to the second support member. In this design, the first support member, relying on the flexibility of the motion mechanism, can undergo overall displacement relative to the second support member. The movement trajectory is roughly arc-shaped, allowing the first support member to switch positions between above and beside the second support member. Furthermore, it can remain parallel to the second support member when above or beside it (the first support member remains horizontal when the second support member is horizontal). This allows the handrail device to have both a stacked and unfolded state. In the stacked state, the handrail device functions as a regular handrail, supporting the human arm. In the unfolded state, the handrail device becomes a small table for placing items. When used as a handrail or a small table, the handrail device generally remains horizontal, but some tilting is also normal.

[0021] The motion mechanism can change the position of the first support member between above and beside the second support member while keeping the first support member and the second support member parallel, that is, without the first support member rotating; or, even if the first support member rotates during the state switching process, it can still keep the first support member and the second support member parallel in the stacked state and the unfolded state; this requires the specific structure below.

[0022] This armrest device maintains the shape and function of a conventional armrest while transforming into a small table. Because it is achieved through deformation, there is no need to accommodate or hide the small table, thus maintaining the portability and simplicity of the office chair armrest. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the handrail device in an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the handrail device in the superimposed state of the present invention in the embodiments;

[0025] Figure 3 This is a cross-sectional view of the handrail device in the superimposed state of the present invention in the embodiments;

[0026] Figure 4 This is a three-dimensional structural diagram of the first support member being lifted from the second support member by the rotation of the connecting rod in an embodiment of the present invention;

[0027] Figure 5 This is a cross-sectional view of the first support member being lifted from the second support member by the rotation of the connecting rod in an embodiment of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the first support member moving to the side of the second support member by the rotation of the connecting rod in an embodiment of the present invention.

[0029] Figure 7 This is a cross-sectional view of the first support member moving to the side of the second support member by the rotation of the connecting rod in an embodiment of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of the first support member avoiding the second support member by sliding relative to the connecting rod in an embodiment of the present invention;

[0031] Figure 9 A cross-sectional view of the first support member avoiding the second support member by sliding relative to the connecting rod in an embodiment of this utility model;

[0032] Figure 10 This is a three-dimensional structural diagram of the handrail device in the unfolded state in the embodiment of the present invention;

[0033] Figure 11 This is a cross-sectional view of the handrail device in the unfolded state in an embodiment of the present invention;

[0034] Figure 12 This is a cross-sectional view of the first and second support members in the embodiments of this utility model;

[0035] Figure 13 This is a three-dimensional structural diagram of the connecting rod in an embodiment of the present invention;

[0036] Figure 14 This is a schematic diagram illustrating the state switching of the handrail device in an embodiment of the present invention.

[0037] The reference numerals in the attached drawings are as follows: first support member 1; first support surface 11; first receiving groove 12; first stacking limiting part 121; first unfolding limiting part 122; second support member 2; second support surface 21; second receiving groove 22; second stacking limiting part 221; second unfolding limiting part 222; support assembly 3; slide 4; connecting rod 5; rotating shaft 51; rotating hole 6. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] The specific implementation of this utility model is as follows:

[0042] like Figure 14 As shown, this utility model provides a handrail device with different states, including a first support member 1 and a second support member 2. A motion mechanism is rotatably provided on the second support member 2, and the first support member 1 is rotatably disposed on the motion mechanism. The upper surface of the first support member 1 is the first support surface 11, and the upper surface of the second support member 2 is the second support surface 21. The handrail device has a stacked state and an unfolded state. In the stacked state, the first support member 1 is stacked on top of the second support member 2, and the lower surface of the first support member 1 is aligned with the second support surface 21. In the unfolded state, the first support member 1 is located beside the second support member 2, and the two are side by side along the width direction. The first support surface 11 and the second support surface 21 together form a placement surface. The motion mechanism is configured such that when switching between the stacked state and the unfolded state, the first support member 1 is displaced relative to the second support member 2 through the motion mechanism.

[0043] The motion mechanism is rotatably connected to both the first and second support members. However, the first support member 1 is not merely rotated or translated relative to the second support member 2. In this design, the first support member 1, relying on the flexibility of the motion mechanism, can undergo overall displacement relative to the second support member 2. The movement trajectory is roughly arc-shaped, allowing the first support member 1 to switch positions between above and beside the second support member 2. Furthermore, it can remain parallel to the second support member 2 when above or beside it (the first support member 1 remains horizontal when the second support member 2 is horizontal). This allows the handrail device to have both a stacked and unfolded state. In the stacked state, the handrail device functions as a regular handrail, used to support the human arm. In the unfolded state, the handrail device becomes a small table for placing items. When used as a handrail or a small table, the handrail device is generally kept horizontal, but tilting is also normal.

[0044] The motion mechanism can change the position of the first support 1 between the top and the side of the second support 2 while keeping the first support 1 parallel to the second support 2, that is, without the first support 1 rotating; or, even if the first support 1 rotates during the state switching process, it can still keep the first support 1 and the second support 2 parallel in the stacked state and the unfolded state; this requires the specific structure below.

[0045] This armrest device maintains the shape and function of a conventional armrest while transforming into a small table. Because it is achieved through deformation, there is no need to accommodate or hide the small table, thus maintaining the portability and simplicity of the office chair armrest.

[0046] Specifically, such as Figure 1 As shown, the armrest device also includes a support assembly 3, and a second support member 2 is movably mounted on the support assembly 3. The support assembly 3 is used to connect with the seat. The support assembly 3 itself can extend and retract to realize the lifting and lowering of the first and second support members. The second support member 2 can move in multiple directions on the support assembly 3. The relevant structure will not be described in detail here. The multi-directional movement not only allows the first and second support members to adapt to different arm support postures, but also allows the small table formed to be moved to different positions of the human body, which is convenient for use in different situations, such as the small table can be located in front of or to the side of the human body.

[0047] To be more specific, such as Figure 2-12 As shown, the lower surface of the first support member 1 is provided with a first receiving groove 12 from bottom to top, and the first receiving groove 12 is configured to avoid a movement mechanism; the second support surface 21 is provided with a second receiving groove 22 from top to bottom, and the second receiving groove 22 is configured to avoid a movement mechanism; the end face of the first receiving groove 12 includes a first stacking limiting part 121 and a first unfolding limiting part 122, and the end face of the second receiving groove 22 includes a second stacking limiting part 221 and a second unfolding limiting part 222. The first stacking limiting part 121, the first unfolding limiting part 122, the second stacking limiting part 221, and... The second unfolding limiting part 222 is an inclined surface; in the stacked state, the motion mechanism abuts against the first stacking limiting part 121 and the second stacking limiting part 221 respectively, making the first support member 1 and the second support member 2 parallel; in the unfolded state, the motion mechanism abuts against the first unfolding limiting part 122 and the second unfolding limiting part 222 respectively, making the first support member 1 and the second support member 2 parallel; thereby maintaining the first support member 1 parallel to the second support member 2 in both the stacked and unfolded states, so that the handrail device can form a corresponding and normally usable plane in both states.

[0048] like Figure 3 , 5As shown in Figures 7, 9, and 11, the motion mechanism includes a slide groove 4 and a connecting rod 5. The slide groove 4 is formed on one end face of either the first receiving groove 12 or the second receiving groove 22. One end of the connecting rod 5 is rotatably disposed on the end face of the other receiving groove, and the other end of the connecting rod 5 is disposed in the slide groove 4. In the stacked state, the connecting rod 5 is located in both the first receiving groove 12 and the second receiving groove 22. The slide groove 4 is arranged in the left-right direction, and the connecting rod 5 is slidably and rotatably disposed in the slide groove 4. The slide groove 4 allows the first support member 1 to slide in the left-right direction, thereby adjusting its position relative to the second support member 2. Especially during state switching, it can avoid the second support member 2, thus allowing unobstructed movement. With sufficiently precise dimensional adjustments... In this case, the motion mechanism can be just a double-headed rotating connecting rod 5, without the need for the slide groove 4; in this embodiment, the slide groove 4 is provided on the groove wall of the first receiving groove 12, the slide groove 4 is connected to the first receiving groove 12, the first superimposed limiting part 121 and the first unfolding limiting part 122 are mutually disconnected inclined surfaces, and the second superimposed limiting part 221 and the second unfolding limiting part 222 are continuous inclined surfaces; when the state is switched, the connecting rod 5 rotates relative to the second supporting part 2 with the movement of the first supporting part 1; the presence of the slide groove 4 causes the positions of the first superimposed limiting part 121 and the second superimposed limiting part 221 to deviate, so the two are disconnected; while the second superimposed limiting part 221 and the second unfolding limiting part 222 can be continuous inclined surfaces.

[0049] like Figure 13 As shown, the two ends of the connecting rod 5 are respectively provided with two rotating shafts 51 protruding in the front-rear direction. The rotating shafts 51 are respectively set in the sliding groove 4 of the first receiving groove 12 and the rotating hole 6 of the second receiving groove 22. The connecting rod 5 and its rotating shafts 51 are integrally formed, and the structure is simple.

[0050] In addition, the motion mechanism may also include at least two links, and the motion mechanism together with the first and second support members constitutes a four-bar linkage; the four-bar linkage can also achieve the same motion trajectory and effect as the first support member 1.

Claims

1. A handrail device with different states, characterized in that: The handrail includes a first support member and a second support member. The second support member is rotatably equipped with a motion mechanism, and the first support member is rotatably mounted on the motion mechanism. The upper surface of the first support member is the first support surface, and the upper surface of the second support member is the second support surface. The handrail device has a stacked state and an unfolded state. In the stacked state, the first support member is stacked on top of the second support member, and the lower surface of the first support member is in contact with the second support surface. In the unfolded state, the first support member is located next to the second support member, and the two are side by side along the width direction. The first support surface and the second support surface together form the placement surface. The motion mechanism is configured such that when switching between the stacked state and the unfolded state, the first support member is displaced relative to the second support member through the motion mechanism.

2. The handrail device with different states according to claim 1, characterized in that: The lower surface of the first support member is provided with a first receiving groove from bottom to top, and the first receiving groove is configured to avoid a movement mechanism; the second support surface is provided with a second receiving groove from top to bottom, and the second receiving groove is configured to avoid a movement mechanism.

3. The handrail device with different states according to claim 2, characterized in that: The end face of the first receiving groove includes a first stacking limiting part and a first unfolding limiting part, and the end face of the second receiving groove includes a second stacking limiting part and a second unfolding limiting part; in the stacked state, the motion mechanism abuts against the first stacking limiting part and the second stacking limiting part respectively and makes the first support member and the second support member parallel; in the unfolded state, the motion mechanism abuts against the first unfolding limiting part and the second unfolding limiting part respectively and makes the first support member and the second support member parallel.

4. The handrail device with different states according to claim 3, characterized in that: The first superimposed limiting part, the first unfolding limiting part, the second superimposed limiting part, and the second unfolding limiting part are all inclined surfaces.

5. The handrail device with different states according to claim 3, characterized in that: The motion mechanism includes a slide and a connecting rod. The slide is formed on one end face of the first receiving groove or the second receiving groove. One end of the connecting rod is rotatably disposed on the end face of the other receiving groove, and the other end of the connecting rod is disposed in the slide. In the superimposed state, the connecting rod is located in the first receiving groove and the second receiving groove. The slide is arranged in the left-right direction, and the connecting rod slides and rotates in the slide.

6. The handrail device with different states according to claim 5, characterized in that: The slide is provided on the wall of the first receiving groove. The first stacking limiting part and the first unfolding limiting part are mutually disconnected inclined surfaces, while the second stacking limiting part and the second unfolding limiting part are continuous inclined surfaces.

7. The handrail device with different states according to claim 5, characterized in that: The connecting rod has two pivots protruding in the front-to-back direction at each end.

8. The handrail device with different states according to claim 1, characterized in that: The motion mechanism includes at least two links, and the motion mechanism together with the first and second support members constitutes a four-bar linkage.

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