An adjustable holding mechanism for an adaptive holding seat

Abstract

An adjustable supporting mechanism for an adaptive supporting seat, belonging to the technical field of supporting seats. It includes a base assembly and a supporting assembly arranged on a bottom plate; the supporting assembly includes supporting arms movably arranged on both sides of the bottom plate, supporting palms arranged on the supporting arms, and a supporting arm adjusting assembly for adjusting the support of the two supporting arms; the base assembly is located between the two supporting arms, and the base assembly includes a sliding mechanism, a supporting linkage arranged on the sliding mechanism, and a lifting mechanism connected to the sliding mechanism. A spring is sleeved outside the sliding mechanism; the supporting arms are movably and cooperatively connected with the supporting linkage to achieve linkage movement. The present invention can realize the adjustment of the relative height between the supporting palm and the seat cushion and the adjustment of the supporting distance between the two supporting palms on both sides to meet the sitting needs of people of different heights, weights and body types, and improve the supporting comfort of the seat.

Description

Technical Field

[0001] The present invention belongs to the technical field of supporting seats, and particularly relates to an adjustable supporting mechanism for an adaptive supporting seat. Background Art

[0002] An adaptive supporting seat is a seat that utilizes the gravity of the human body itself and, based on a linkage mechanism, provides auxiliary support to the sitter when sitting, so as to reduce the stress on parts such as the spine of the sitter; however, each sitter has different body proportions and body sizes in various parts; therefore, in order to meet the sitting needs of the sitter and provide a comfortable sitting environment for him / her, it is necessary to adjust the supporting position and supporting force of the seat. Summary of the Invention

[0003] Aiming at the above problems existing in the prior art, the purpose of the present invention is to provide an adjustable supporting mechanism for an adaptive supporting seat, which improves the supporting position and supporting force of the adjustable supporting palm, improves the comfort of the seat, and adapts to the sitting needs of different people.

[0004] The present invention provides the following technical solutions:

[0005] An adjustable supporting mechanism for an adaptive supporting seat includes a base assembly and a supporting assembly arranged on a base plate; the supporting assembly includes supporting arms movably arranged on both sides of the base plate and a supporting arm adjusting assembly for adjusting the support of the two supporting arms; the base assembly is located between the two supporting arms, and the base assembly includes a sliding mechanism, a bottom support member arranged on the sliding mechanism, a supporting linkage member, and a lifting mechanism connected to the sliding mechanism; wherein, the bottom support member is a spring, which is sleeved outside the sliding mechanism; the supporting arm is movably and cooperatively connected with the supporting linkage member to realize linkage movement.

[0006] Further, the sliding mechanism includes a fixed sleeve fixedly arranged on the base plate, a sliding sleeve slidably and cooperatively arranged on the upper part of the fixed sleeve, and a guide sleeve limitedly arranged in the sliding sleeve.

[0007] Further, the lifting mechanism includes a screw rod, a lifting transmission member arranged at the lower end of the screw rod, a connecting rod arranged at the upper end of the screw rod, and a seat cushion arranged at the upper end of the connecting rod; the screw rod is connected to the sliding sleeve through a connecting block; the lower part of the connecting rod is slidably and cooperatively arranged in the guide sleeve.

[0008] Further, the supporting linkage member is arranged outside the base plate, and the supporting linkage member has a "Λ" - shaped structure and is connected to the sliding sleeve.

[0009] Further, the supporting arm is slidably arranged on the base plate and is connected to the supporting linkage member through a sliding cooperation mechanism to realize the linkage movement between the two.

[0010] Further, the support arm adjusting assembly includes a mounting plate disposed on the bottom plate, and a manual adjusting member, a transmission mechanism and a limiting plate are provided on the mounting plate.

[0011] Further, the transmission mechanism includes a worm and a worm wheel engaged with the worm, and the manual adjusting member is connected to the worm.

[0012] Further, the number of the limiting plates is two, and both of the two limiting plates are connected to the worm wheel through connecting gears; the two limiting plates are correspondingly arranged with the support arms and are slidably and cooperatively arranged on the mounting plate.

[0013] Further, a rack structure engaged with the connecting gear is provided on the inner side of the limiting plate.

[0014] Further, both the lifting transmission member and the manual adjusting member are driven by an external transmission mechanism.

[0015] By adopting the above technologies, compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1) The mechanism of the present invention can realize the adjustment of the relative height between the supporting position of the supporting palm and the seat cushion and the adjustment of the supporting distance between the two supporting palms on both sides, so as to meet the sitting needs of people of different heights, weights and builds, and improve the supporting comfort of the seat.

[0017] 2) In the present invention, through the lifting movement of the screw rod, the height of the seat cushion can be adjusted, and further the relative position adjustment in height between the seat cushion and the supporting palm can be realized.

[0018] 3) In the present invention, through the connection structure between the screw rod and the sliding sleeve, the sliding connection structure between the sliding sleeve and the fixed sleeve, and the sliding and cooperative connection structure between the supporting linkage and the supporting arm, the linkage movement between the supporting arm and the seat cushion is realized, and during the sitting process of the sitter, an auxiliary support is provided for the sitter in a linkage manner; and through the provided spring, the bottom support and reset operation of the seat cushion are carried out.

[0019] 4) In the present invention, through the connection structure in which the manually adjustable member, the worm, the worm wheel, the connecting gear and the limiting plate are sequentially connected in transmission, the sliding adjustment of the position of the limiting plate is realized, and further the adjustment of the moving position of the supporting arm is realized, so as to adjust the supporting distance between the supporting palms.

[0020] 5) In the present invention, the supporting linkage is designed in an "Λ" shape structure, which ensures that the force application angle between the linkage mechanisms remains unchanged, thereby ensuring the stability of the supporting force.

[0021] 6) In the present invention, a worm and worm gear mating structure is adopted. By utilizing the one-way transmission principle of this mating structure, the position of the limit plate can only be adjusted through the manual adjustment member, and then the position of the supporting arm can be adjusted, thereby avoiding the limit failure caused by the reverse action of the clamping force of the supporting arm pushing the limit plate member. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is an internal sectional structural schematic diagram of the present invention;

[0024] Figure 3 is Figure 2 an enlarged structural schematic diagram of A in

[0025] Figure 4 is a three-dimensional structural schematic diagram of the supporting arm adjusting assembly of the present invention;

[0026] Figure 5 is an internal structural schematic diagram of the supporting arm adjusting assembly of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings of the specification and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] On the contrary, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit and scope of the present invention as defined by the claims. Further, in order to enable the public to better understand the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0029] Please refer to Figures 1-5 , an adjustable supporting mechanism for an adaptive supporting seat, including a base assembly and a supporting assembly. The supporting assembly includes two supporting arms 5, a supporting palm provided on the supporting arm 5, and a supporting arm adjusting assembly 6. The two supporting arms 5 are respectively arranged on both sides of the upper end of the bottom plate 1 and are slidably arranged on the bottom plate 1 through a mating structure composed of a guide rail and a slider; the base assembly is arranged between the two supporting arms 5.

[0030] Specifically, the base assembly includes a sliding mechanism 2, a supporting linkage 3 and a lifting mechanism 4. Among them:

[0031] The sliding mechanism 2 includes a fixed sleeve 201, a sliding sleeve 202 and a guide sleeve 203; the fixed sleeve 201 is fixedly arranged on the bottom plate 1, and the lower part of the sliding sleeve 202 is slidably matched with the upper part of the fixed sleeve 201; the guide sleeve 203 is limit-mounted inside the sliding sleeve 202.

[0032] The lifting mechanism 4 includes a screw rod 401, a lifting transmission member 402, a connecting rod 403, a seat cushion 404 and a connecting block 405. The lower end of the lifting transmission member 402 is in transmission connection with the lower end of the screw rod 401 through a transmission key; the lower part of the connecting rod 403 is slidably matched inside the guide sleeve 203, and there is a limit connection and a bearing is arranged between the end of its lower end and the upper end of the screw rod 401. The connecting block 405 is threadedly engaged with the rod body of the screw rod 401 and is fixedly connected to the sliding sleeve 202; the seat cushion 404 is mounted on the connecting rod 403; a spring 7 is sleeved outside the sliding mechanism 2 for buffering and supporting when sitting and resetting the seat cushion 404 after the sitter gets up.

[0033] The supporting linkage member 3 is arranged outside the bottom plate 1, which is connected to the sliding sleeve 202 through a connecting plate and is slidably connected to the supporting arm 5 through a matching structure composed of a guide rail and a slider. Its lifting movement in the vertical direction can drive the supporting arm 5 to perform a linkage movement in the horizontal direction. The supporting linkage member 3 is in a "Λ" shape structure, and this structure makes the supporting arm 5 have a fixed-angle acting force, ensuring the stability of the supporting force.

[0034] Specifically, the supporting arm adjusting assembly 6 includes a mounting plate 601, and a manual adjusting member 602, a transmission mechanism, two limiting plates 603 and a connecting gear 606 are arranged on the mounting plate 601. Among them:

[0035] The transmission mechanism includes a worm 604 and a worm gear 605; the manual adjusting member 602 is in transmission connection with the worm 604, the worm 604 is meshed with the worm gear 605, and the worm gear 605 drives the two limiting plates 603 to move towards each other through the connecting gear 606.

[0036] The limiting plates 603 are arranged in one-to-one correspondence with the supporting arms 5. A rack structure is arranged on the inner side of the limiting plates 603, and this rack structure is meshed with the connecting gear 606; a limiting portion corresponding to the end of the limiting plate 603 is arranged on the supporting arm 5 to facilitate the stability when the limiting plate 603 contacts the supporting arm 5.

[0037] Specifically, both the lifting transmission member 402 and the manual adjusting member 602 are controlled through a belt wheel mechanism and in cooperation with a knob, and this knob is arranged on the armrest of the seat; in addition, other transmission mechanisms can be adopted to realize the functions of this structure.

[0038] In this embodiment, the relative position between the supporting height and the height of the seat cushion 404 can also be adjusted by lifting the supporting arm 5.

[0039] The working principle of the mechanism in this embodiment is as follows:

[0040] When the sitter sits on the seat cushion 404, with the downward pressure of the body weight, the connecting rod 403 is driven to move downward, and the sliding sleeve 202 is driven to move downward via the connecting block 405, and then the supporting linkage member 3 is driven to move downward. During the downward movement of the supporting linkage member 3, the two supporting arms 5 on both sides are driven to move towards each other along the bottom plate 1 through the sliding fit structure to support the sitter, and the spring 7 provides bottom support for the sitter.

[0041] When adjusting the relative position between the sitting height of the seat cushion 404 and the supporting height of the supporting palm as needed, before sitting, the rotary button drives the lifting transmission member 402 to rotate through the belt pulley mechanism, and then drives the screw rod 401 to rotate up or down, thereby driving the seat cushion 404 provided on the connecting rod 403 to move up and down.

[0042] When it is necessary to adjust the supporting distance between the two supporting palms to adjust the supporting force, the rotary button drives the manual adjusting member 602 to rotate through the belt pulley mechanism. Through the transmission of the worm 604, the worm gear 605 and the connecting gear 606, the two relatively arranged limiting plates 603 are driven to move in opposite or opposite directions, and the position of the end of the limiting end of the limiting plate 603 is adjusted to realize the limiting adjustment of the moving position of the supporting arm 5, and further realize the adjustment of the supporting distance between the two supporting palms.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable supporting mechanism for an adaptive supporting seat, characterized in that: It includes a base assembly and a supporting arm assembly arranged on a bottom plate; the supporting arm assembly includes supporting arms movably arranged on both sides of the bottom plate and a supporting arm adjusting assembly for adjusting the support of the two supporting arms; the base assembly is located between the two supporting arms, and the base assembly includes a sliding mechanism, a bottom support member arranged on the sliding mechanism, a supporting linkage member, and a lifting mechanism connected to the sliding mechanism; The supporting arm is movably and cooperatively connected with the supporting linkage member to achieve linkage movement; The supporting arm adjusting assembly includes a mounting plate arranged on the bottom plate, and a manual adjusting member, a transmission mechanism and a limiting plate are arranged on the mounting plate; The number of the limiting plates is two, and both limiting plates are connected to a worm gear through a connecting gear; the two limiting plates are arranged corresponding to the supporting arms and are slidably and cooperatively arranged on the mounting plate; The supporting linkage member is arranged outside the bottom plate, and the supporting linkage member is in a "Λ" shape structure and is connected to a sliding sleeve; The supporting arm is slidably arranged on the bottom plate and is connected to the supporting linkage member through a sliding cooperation mechanism to achieve linkage movement between the two; The transmission mechanism includes a worm and a worm gear matched with the worm, and the manual adjusting member is connected to the worm; 2. The adjustable supporting mechanism for an adaptive supporting seat according to claim 1, characterized in that The sliding mechanism includes a fixed sleeve fixedly arranged on the bottom plate, a sliding sleeve slidably arranged on the upper part of the fixed sleeve, and a guide sleeve arranged in a limiting manner in the sliding sleeve; 3. The adjustable supporting mechanism for an adaptive supporting seat according to claim 2, characterized in that The lifting mechanism includes a screw rod, a lifting transmission member arranged at the lower end of the screw rod, a connecting rod arranged at the upper end of the screw rod, and a cushion seat arranged at the upper end of the connecting rod; the screw rod is connected to the sliding sleeve through a connecting block; the lower part of the connecting rod is slidably and cooperatively arranged in the guide sleeve; 4. The adjustable supporting mechanism for an adaptive supporting seat according to claim 3, characterized in that A rack structure meshing with the connecting gear is arranged on the inner side of the limiting plate; 5. The adjustable supporting mechanism for an adaptive supporting seat according to claim 3, characterized in that Both the lifting transmission member and the manual adjusting member are driven through an external transmission mechanism.

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