Support leg and seat

Abstract

Embodiments of the present invention relate to the technical field of seats and provide a support leg and a seat including the same. The support leg includes an outer tube; an inner tube, slidably connected to the outer tube, where a bottom of the inner tube is configured to be supported by a fixed base; an adjustment plug, including a body and a push rod connected to the body, where the body is fixedly connected to the inner tube, the body is movably connected to the outer tube, the body has a tendency to move downward relative to the outer tube, and an end of the push rod away from the body extends upward in a vertical direction; and an upper cover, arranged on a top of the outer tube, where a sliding block is arranged in the upper cover, the sliding block has a tendency to move toward the push rod in a horizontal direction, a first indication mark and a second indication mark are arranged on the sliding block, and a display window configured to expose the first indication mark or the second indication mark is provided on the upper cover, enabling an occupant to conveniently observe the state of the seat.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of seats, and specifically to a support leg and a seat.BACKGROUND

[0002] Seats can be classified by use into airport seats, car seats, bus seats, family seats, restaurant seats, child safety seats, leisure seats, etc. In some existing seats, a color change prompt mechanism is provided on a support leg to remind a user whether the seat is in a supporting or non-supporting state. However, the color change prompt mechanism is usually located near the bottom of the support leg, making it inconvenient for an occupant to observe the state of the seat.SUMMARY

[0003] An objective of the present invention includes, for example, providing a support leg and a seat, to enable an occupant to conveniently observe the state of the seat.

[0004] Embodiments of the present invention may be implemented as follows.

[0005] An embodiment of the present invention provides a support leg, including: an outer tube; an inner tube, slidably connected to the outer tube, where a bottom of the inner tube is configured to be supported by a fixed base; an adjustment plug, including a body and a push rod connected to the body, where the body is fixedly connected to the inner tube, the body is movably connected to the outer tube, the body has a tendency to move downward relative to the outer tube, and an end of the push rod away from the body extends upward in a vertical direction; and an upper cover, arranged on a top of the outer tube, where a sliding block is arranged in the upper cover, the sliding block has a tendency to move toward the push rod in a horizontal direction, a first indication mark and a second indication mark are arranged on the sliding block, and a display window configured to expose the first indication mark or the second indication mark is provided on the upper cover, where when the support leg is in a supporting state, the inner tube drives the body and the push rod to move upward, and the push rod pushes the sliding block to move until the first indication mark is exposed through the display window; and when the support leg is in a non-supporting state, the body and the push rod move downward relative to the outer tube, and the sliding block moves toward the push rod until the second indication mark is exposed through the display window.

[0006] Optionally, a first elastic member is arranged in the upper cover, and the first elastic member is connected to the sliding block and is configured to cause the sliding block to have a tendency to move toward the push rod.

[0007] Optionally, an inclined surface is provided at an end of the sliding block adjacent to the push rod, and the push rod is configured to push, through the inclined surface, the sliding block to move until the first indication mark is exposed through the display window.

[0008] Optionally, the first indication mark is a green mark and the second indication mark is a red mark.

[0009] Optionally, the adjustment plug further includes a connecting portion, the connecting portion is arranged above the body, the connecting portion is fixedly connected to the outer tube, the body is movably connected to the connecting portion, and when a force is applied to the body, the body moves upward relative to the connecting portion.

[0010] Optionally, the support leg further includes a protective member connected to the connecting portion, where the protective member is provided with a positioning block, the outer tube is provided with a positioning hole configured to engage with the positioning block, and the connecting portion is fixedly connected to the outer tube by an engagement of the positioning block with the positioning hole.

[0011] Optionally, a second elastic member is arranged between the protective member and the body, and the second elastic member is configured to cause the body to have a tendency to move downward relative to the outer tube.

[0012] Optionally, the support leg further includes a button, a gear member, and a third elastic member, where the button is hingedly connected to the body, the gear member is connected to a bottom of the button, a plurality of engagement holes are provided on the inner tube along a length direction of the inner tube, the gear member is configured to engage with one of the plurality of engagement holes, and the third elastic member is connected to a top of the button and is configured to cause the button to have a tendency to move away from the body.

[0013] Optionally, the gear member includes an engagement end, the outer tube is provided with a notch for the engagement end to pass through, the body is provided with a through hole for the engagement end to pass through, and a height of the notch in a length direction of the outer tube is greater than a thickness of the engagement end in the length direction of the outer tube.

[0014] An embodiment of the present invention further provides a seat including the support leg.

[0015] The support leg and the seat including the same according to the embodiments of the present invention have, for example, the following advantages. The body of the adjustment plug is fixedly connected to the inner tube and is movably connected to the outer tube, the sliding block provided with the first indication mark and the second indication mark is arranged in the upper cover, and the upper cover is arranged on the top of the outer tube. When the support leg is in the supporting state, the inner tube pushes the body and the push rod to move upward, and the push rod pushes the sliding block to move until the first indication mark is exposed through the display window. When the support leg is in the non-supporting state, the body and the push rod move downward relative to the outer tube, and the sliding block moves toward the push rod until the second indication mark is exposed through the display window. As such, either the first indication mark or the second indication mark is exposed through the display window on the upper cover, making it convenient for an occupant to observe the state of the seat.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To describe the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. It can be understood that the accompanying drawings in the following description show only some embodiments of the present invention and should not be construed as limiting of the scope of the present invention, and those having ordinary skills in the art may still derive other related drawings from these accompanying drawings without creative efforts. FIG. 1 is a schematic structural diagram of a support leg according to an embodiment of the present invention. FIG. 2 is an exploded view of a support leg according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an upper cover according to an embodiment of the present invention. FIG. 4 is a partial cross-sectional view of a support leg in a non-supporting state according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view of a support leg in a supporting state according to an embodiment of the present invention.

[0017] In the drawings, the reference numerals respectively represent: 1 - outer tube; 11 - positioning hole; 12 - notch; 2 - inner tube; 21 - engagement hole; 3 - adjustment plug; 31 - body; 311 - through hole; 32 - push rod; 33 - connecting portion; 34 - groove; 4 - upper cover; 41 - sliding block; 411 - inclined surface; 42 - display window; 43 - first elastic member; 5 - protective member; 51 - positioning block; 52 - second elastic member; 6 - button; 7 - gear member; 71 - engagement end; 8 - third elastic member; 9 - fastener.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and thoroughly with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the embodiments described are merely some embodiments, rather than all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated in the accompanying drawings herein may generally be arranged and designed in a variety of different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that like numerals and letters denote like terms in the following drawings. Therefore, once an item is defined in one accompanying drawing, the item does not need to be further defined and explained in the subsequent accompanying drawings.

[0021] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "up", "down", "inside", "outside", etc. are based on the orientation or positional relationships shown in the drawings or the usual orientation or positional relationships of the product of the present invention during use, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the apparatus or element described must have a specific orientation or be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention.

[0022] In addition, the terms "first" and "second" are merely used to distinguish the described objects, and are not intended to indicate or imply relative importance.

[0023] It should be noted that the features in the embodiments of the present invention may be combined with each other without conflict.

[0024] It is found that in some existing seats, a color change prompt mechanism is provided on a support leg to remind a user whether the seat is in a supporting or non-supporting state. However, the color change prompt mechanism is usually located near the bottom of the support leg, making it inconvenient for an occupant to observe the state of the seat. To at least solve the technical problem, embodiments of the present invention provide a support leg applied to a seat.

[0025] Referring to FIG. 1 to FIG. 5, a support leg provided by an embodiment of the present invention includes an outer tube 1, an inner tube 2, an adjustment plug 3, and an upper cover 4. The inner tube 2 is slidably connected to the outer tube 1. A bottom of the inner tube 2 is configured to be supported by a fixed base. The adjustment plug 3 includes a body 31 and a push rod 32 connected to the body 31. The body 31 is fixedly connected to the inner tube 2. The body 31 is movably connected to the outer tube 1. The body 31 has a tendency to move downward relative to the outer tube 1. An end of the push rod 32 away from the body 31 extends upward in a vertical direction. The upper cover 4 is arranged on a top of the outer tube 1. A sliding block 41 is arranged in the upper cover 4. The sliding block 41 has a tendency to move toward the push rod 32 in a horizontal direction. A first indication mark and a second indication mark are arranged on the sliding block 41. A display window 42 configured to expose the first indication mark or the second indication mark is provided on the upper cover 4.

[0026] When the support leg is in a supporting state, the inner tube 2 pushes the body 31 and the push rod 32 to move upward, and the push rod 32 pushes the sliding block 41 to move until the first indication mark is exposed through the display window 42. When the support leg is in a non-supporting state, the body 31 and the push rod 32 move downward relative to the outer tube 1, and the sliding block 41 moves toward the push rod 32 until the second indication mark is exposed through the display window 42.

[0027] It should be noted that the fixed base may be ground, a chassis of a vehicle, or other fixed objects; a first end of the push rod 32 is connected to the body 31, and a second end of the push rod 32 extends upward and toward the sliding block 41; and the first indication mark and the second indication mark are arranged on a top of the sliding block 41, the first indication mark is configured to indicate that the support leg is in the supporting state, and the second indication mark is configured to indicate that the support leg is in the non-supporting state.

[0028] The body 31 of the adjustment plug 3 is fixedly connected to the inner tube 2 and is movably connected to the outer tube 1, the sliding block 41 provided with the first indication mark and the second indication mark is arranged in the upper cover 4, and the upper cover 4 is arranged on the top of the outer tube 1. When the support leg is in the supporting state, the inner tube 2 drives the body 31 and the push rod 32 to move upward, and the push rod 32 moves upward and pushes the sliding block 41 to move until the first indication mark is exposed through the display window 42. When the support leg is in the non-supporting state, the body 31 drives the push rod 32 to move downward relative to the outer tube 1, and the sliding block 41 moves toward the push rod 32 until the second indication mark is exposed through the display window 42. As such, either the first indication mark or the second indication mark is exposed through the display window 42 on the upper cover 4, making it convenient for an occupant to observe the state of the seat.

[0029] A first elastic member 43 is arranged in the upper cover 4. The first elastic member 43 is connected to the sliding block 41 and is configured to cause the sliding block 41 to have a tendency to move toward the push rod 32.

[0030] In this embodiment, the first elastic member 43 is a spring arranged in the horizontal direction, a first end of the spring is connected to an inner wall of the upper cover 4, and a second end of the spring is connected to the sliding block 41, causing the sliding block 41 to have a tendency to move toward the push rod 32 in the horizontal direction.

[0031] Further, an inclined surface 411 is provided at an end of the sliding block 41 adjacent to the push rod 32, and the push rod 32 is configured to push, through the inclined surface 411, the sliding block 41 to move until the first indication mark is exposed through the display window 42.

[0032] When the support leg is in the supporting state, the inner tube 2 drives the body 31 and the push rod 32 to move upward, and the push rod 32 moves upward and pushes the inclined surface 411 of the sliding block 41, causing the sliding block 41 to move until the first indication mark is exposed through the display window 42. When the support leg is in the non-supporting state, the body 31 drives the push rod 32 to move downward relative to the outer tube 1, and the push rod 32 gradually moves away from the inclined surface 411 of the sliding block 41, and the sliding block 41 moves toward the push rod 32 under the action of the first elastic member 43 until the second indication mark is exposed through the display window 42.

[0033] In this embodiment, the first indication mark is a green mark and the second indication mark is a red mark.

[0034] When the green mark is displayed at the display window 42, it indicates that the support leg is in the supporting state. When the red marker is displayed at the display window 42, it indicates that the support leg is in the non-supporting state.

[0035] Definitely, it may be understood that in some other embodiments, the first indication mark and the second indication mark may not be color marks, and may be shape marks or text marks as long as it can be distinguished whether the support leg is in the supporting state or the non-supporting state.

[0036] The adjustment plug 3 further includes a connecting portion 33. The connecting portion 33 is arranged above the body 31. The connecting portion 33 is fixedly connected to the outer tube 1. The body 31 is movably connected to the connecting portion 33. When a force is applied to the body 31, the body 31 moves upward relative to the connecting portion 33.

[0037] It should be noted that the body 31 can move relative to the connecting portion 33 in the vertical direction, and when the inner tube 2 pushes the body 31 and the push rod 32 to move upward, the body 31 moves upward relative to the connecting portion 33, and the connecting portion 33 limits the body 31 in the horizontal direction to ensure the stability of the vertical movement of the body 31.

[0038] The support leg further includes a protective member 5 connected to the connecting portion 33. The protective member 5 is provided with a positioning block 51. The outer tube 1 is provided with a positioning hole 11 configured to engage with the positioning block 51. The connecting portion 33 is fixedly connected to the outer tube 1 by an engagement of the positioning block 51 with the positioning hole 11.

[0039] In this embodiment, the positioning block 51 protrudes from the protective member 5 toward the outer tube 1, and the connecting portion 33 and the protective member 5 are connected by a fastener 9. The fastener 9 may be a bolt or a screw. When the positioning block 51 is inserted into the positioning hole 11, the positioning block 51 is engaged with the positioning hole 11. The connecting portion 33 is fixed relative to the outer tube 1 when the positioning block 51 is engaged with the positioning hole 11.

[0040] A second elastic member 52 is arranged between the protective member 5 and the body 31. The second elastic member 52 is configured to cause the body 31 to have a tendency to move downward relative to the outer tube 1.

[0041] The second elastic member 52 is a spring arranged in the vertical direction, a first end of the spring is connected to the positioning block 51, and a second end of the spring is connected to the body 31, causing the body 31 to have a tendency to move downward relative to the outer tube 1.

[0042] In addition, the support leg further includes a button 6, a gear member 7, and a third elastic member 8. The button 6 is hingedly connected to the body 31. The gear member 7 is connected to a bottom of the button 6. A plurality of engagement holes 21 are provided on the inner tube 2 along a length direction of the inner tube 2. The gear member 7 is configured to engage with one of the plurality of engagement holes 21. The third elastic member 8 is connected to a top of the button 6 and is configured to cause the button 6 to have a tendency to move away from the body 31.

[0043] It should be noted that the button 6 is hingedly connected to the body 31 at a position adjacent to a middle part of the button 6, the gear member 7 is connected to the bottom of the button 6, the third elastic member 8 is a spring, a first end of the third elastic member 8 is connected to the top of the button 6, a groove 34 is provided on a surface of the body 31 facing the button 6, and a second end of the third elastic member 8 presses against the groove 34.

[0044] When a gear position of the inner tube 2 needs to be adjusted, the top of the button 6 is pressed toward the body 31, causing the button 6 to rotate, so that the gear member 7 can disengage from the engagement hole 21 engaged therewith. At this moment, the inner tube 2 is slid relative to the outer tube 1. When another engagement hole 21 is opposite to the gear member 7, the button 6 is released, and the button 6 rotates reversely under the action of the third elastic member 8 and drives the gear member 7 to engage with the another engagement hole 21. As such, the adjustment of the gear position is completed.

[0045] The gear member 7 includes an engagement end 71. The outer tube 1 is provided with a notch 12 for the engagement end 71 to pass through. The body 31 is provided with a through hole 311 for the engagement end 71 to pass through. A height of the notch 12 in a length direction of the outer tube 1 is greater than a thickness of the engagement end 71 in the length direction of the outer tube 1.

[0046] The notch 12 is provided at a bottom of the outer tube 1. The engagement end 71 extends through the through hole 311 and the notch 12 toward the inner tube 2, and is then engaged in the engagement hole 21. Because the height of the notch 12 in the length direction of the outer tube 1 is greater than the thickness of the engagement end 71 in the length direction of the outer tube 1, a difference between the height of the notch 12 in the length direction of the outer tube 1 and the thickness of the engagement end 71 in the length direction of the outer tube 1 is a space allowance for a vertical movement of the inner tube 2 relative to the outer tube 1. The vertical movement of the body 31 relative to the outer tube 1 is achieved by a movement of the engagement end 71 in the notch 12 when a force is applied to the engagement end 71.

[0047] An embodiment of the present invention further provides a seat including the support leg. Technical effects of the seat are substantially the same as those of the support leg, so the details will not be repeatedly described herein.

[0048] Based on the above, the embodiments of the present invention provide a support leg and a seat including the same. Through the fixed connection of the body 31 of the adjustment plug 3 to the inner tube 2 by the gear member 7, the arrangement of the protective member 5 fixedly connected to the outer tube 1, and the arrangement of the second elastic member 52 connected between the protective member 5 and the body 31, the body 31 can move relative to the outer tube 1 in the vertical direction. In addition, the sliding block 41 provided with the first indication mark and the second indication mark is arranged in the upper cover 4, and the upper cover 4 is arranged on the top of the outer tube 1. When the support leg is in the supporting state, the inner tube 2 drives the body 31 and the push rod 32 to move upward, and the push rod 32 moves upward and pushes the inclined surface 411 of the sliding block 41, causing the sliding block 41 to move until the first indication mark is exposed through the display window 42. When the support leg is in the non-supporting state, the body 31 drives the push rod 32 to move downward relative to the outer tube 1, and the push rod 32 gradually moves away from the inclined surface 411 of the sliding block 41, and the sliding block 41 moves toward the push rod 32 under the action of the first elastic member 43 until the second indication mark is exposed through the display window 42. As such, either the first indication mark or the second indication mark is exposed through the display window 42 on the upper cover 4, making it convenient for an occupant to observe the state of the seat.

[0049] The foregoing descriptions are merely specific implementations of the present invention, but are not intended to limit the protection scope of the present invention. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present invention shall fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A support leg, characterized by comprising: an outer tube (1); an inner tube (2), slidably connected to the outer tube (1), wherein a bottom of the inner tube (2) is configured to be supported by a fixed base; an adjustment plug (3), comprising a body (31) and a push rod (32) connected to the body (31), wherein the body (31) is fixedly connected to the inner tube (2), the body (31) is movably connected to the outer tube (1), the body (31) has a tendency to move downward relative to the outer tube (1), and an end of the push rod (32) away from the body (31) extends upward in a vertical direction; and an upper cover (4), arranged on a top of the outer tube (1), wherein a sliding block (41) is arranged in the upper cover (4), the sliding block (41) has a tendency to move toward the push rod (32) in a horizontal direction, a first indication mark and a second indication mark are arranged on the sliding block (41), and a display window (42) configured to expose the first indication mark or the second indication mark is provided on the upper cover (4), wherein when the support leg is in a supporting state, the inner tube (2) drives the body (31) and the push rod (32) to move upward, and the push rod (32) pushes the sliding block (41) to move until the first indication mark is exposed through the display window (42); and when the support leg is in a non-supporting state, the body (31) and the push rod (32) move downward relative to the outer tube (1), and the sliding block (41) moves toward the push rod (32) until the second indication mark is exposed through the display window (42).

2. The support leg according to claim 1, characterized in that a first elastic member (43) is arranged in the upper cover (4), and the first elastic member (43) is connected to the sliding block (41) and is configured to cause the sliding block (41) to have a tendency to move toward the push rod (32).

3. The support leg according to claim 1, characterized in that an inclined surface (411) is provided at an end of the sliding block (41) adjacent to the push rod (32), and the push rod (32) is configured to push, through the inclined surface (411), the sliding block (41) to move until the first indication mark is exposed through the display window (42).

4. The support leg according to claim 1, characterized in that the first indication mark is a green mark and the second indication mark is a red mark.

5. The support leg according to claim 1, characterized in that the adjustment plug (3) further comprises a connecting portion (33), the connecting portion (33) is arranged above the body (31), the connecting portion (33) is fixedly connected to the outer tube (1), the body (31) is movably connected to the connecting portion (33), and when a force is applied to the body (31), the body (31) moves upward relative to the connecting portion (33).

6. The support leg according to claim 5, characterized by further comprising a protective member (5) connected to the connecting portion (33), wherein the protective member (5) is provided with a positioning block (51), the outer tube (1) is provided with a positioning hole (11) configured to engage with the positioning block (51), and the connecting portion (33) is fixedly connected to the outer tube (1) by an engagement of the positioning block (51) with the positioning hole (11).

7. The support leg according to claim 6, characterized in that a second elastic member (52) is arranged between the protective member (5) and the body (31), and the second elastic member (52) is configured to cause the body (31) to have a tendency to move downward relative to the outer tube (1).

8. The support leg according to claim 1, characterized by further comprising a button (6), a gear member (7), and a third elastic member (8), wherein the button (6) is hingedly connected to the body (31), the gear member (7) is connected to a bottom of the button (6), a plurality of engagement holes (21) are provided on the inner tube (2) along a length direction of the inner tube (2), the gear member (7) is configured to engage with one of the plurality of engagement holes (21), and the third elastic member (8) is connected to a top of the button (6) and is configured to cause the button (6) to have a tendency to move away from the body (31).

9. The support leg according to claim 8, characterized in that the gear member (7) comprises an engagement end (71), the outer tube (1) is provided with a notch (12) for the engagement end (71) to pass through, the body (31) is provided with a through hole (311) for the engagement end (71) to pass through, and a height of the notch (12) in a length direction of the outer tube (1) is greater than a thickness of the engagement end (71) in the length direction of the outer tube (1).

10. A seat, characterized by comprising the support leg according to any one of claims 1 to 9.

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