CN212878516U

CN212878516U - Stretching sliding mechanism of lumbar support unit

Info

Publication number: CN212878516U
Application number: CN202021421589.XU
Authority: CN
Inventors: 虞红潮; 阮正富
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-06
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a tensile glide machanism of lumbar support unit, include: a support carrier in an upright position; a lumbar top support member rotatably connected to the support carrier; the waist top support component is made of elastic materials, and when the waist top support component is subjected to backward extrusion force, the waist top support component extends along the support carrier in the longitudinal direction; the upper end part of the waist top support member is connected with the support carrier in a sliding and pivoting way by adopting a sliding mechanism, and the lower end part of the waist top support member is connected with the support carrier in a rotating way and is kept relatively fixed with the support carrier in the longitudinal direction; the sliding mechanism comprises an upper supporting block and an upper sliding groove, the upper end of the waist supporting component is connected with the upper supporting block in a pivoting manner, and the upper supporting block is clamped in the sliding groove and is connected with the sliding groove in a sliding manner. By this design, the lumbar support member stretches in the longitudinal direction upon deformation when subjected to rearward pressure.

Description

Stretching sliding mechanism of lumbar support unit

Technical Field

The utility model relates to a seat field, more specifically the utility model relates to a tensile glide machanism for lumbar support unit of seat that says so.

Background

The traditional chair generally has a seat for a human body to sit down, when the human body sits on the seat, the body weight is supported by the seat, the human body physiological structure shows that the spine of the human body bears the upper body of the human body such as the head, the back and the like, and the load is quite large because the lumbar is at the lowest position of the spine, and the junction of the movable section and the fixed section is easier to be damaged. If the sitting posture of the human body is incorrect, the human body is easy to have soreness and backache except for looking mentally, even the spine and the nerve are pressed, and the health is finally affected.

The patent document' 201210211751.9 discloses a chair structure that a person sits on a chair seat, the chair seat moves downwards by gravity, and waist supports at two sides of the chair seat can support the waist of the user to play a role of supporting. However, the seat structure described above still has the following problems:

1. as long as the user sits on the seat, the waist support of both sides must be drawn in and is realized pressing from both sides tightly, and the user can't carry out the self-regulation according to the demand, and when the user need not the waist support and props up user's waist and realize the physiotherapy, the user can not close this function, and the crowd that is suitable for is too narrow, and the general use is lower relatively.

2. The lower part of the cushion is provided with a link mechanism, the cushion is in a suspension shape, and the structure and the material of the cushion are greatly limited in order to ensure the supporting effect.

From the above, it can be seen that the seat structure has some drawbacks; therefore, the method of designing a complex transmission mechanism on the chair seat is particularly abandoned, the design of the lumbar support unit capable of clamping the waist of the human body is conceived, the two lumbar support units are symmetrically arranged, when the human body leans backwards, the lumbar support unit rotates to clamp the waist of the human body, but the lumbar support unit cannot move in the up-down direction, and the effect of relieving the pressure of the lumbar vertebra is weakened.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a tensile glide machanism of lumbar support unit, this tensile glide machanism produce deformation and upper end upward movement when making lumbar support unit pressurized to make and press from both sides the prerequisite of tight waist and produce ascending frictional force to human waist side, offset partial gravity with this, play the effect of alleviating lumbar vertebrae pressure.

Solve the technical problem, the utility model discloses take following technical scheme:

a tensile glide mechanism of a lumbar support unit comprising:

a support carrier directly or indirectly connected to the seat of the chair and in an upright position;

a lumbar top support member in rotational connection with the support carrier; the waist top support component is made of elastic materials, and when the waist top support component is subjected to backward extrusion force, the waist top support component extends along the support carrier in the longitudinal direction; the upper end part of the waist top support member is connected with the support carrier in a sliding and pivoting way by adopting a sliding mechanism, and the lower end part of the waist top support member is connected with the support carrier in a rotating way and is kept relatively fixed with the support carrier in the longitudinal direction; the sliding mechanism comprises an upper supporting block and an upper sliding groove, the upper end of the waist supporting component is connected with the upper supporting block in a pivoting manner, and the upper supporting block is clamped in the sliding groove and is connected with the sliding groove in a sliding manner.

In a further scheme, the lower part of the supporting carrier and the lower end of the waist top supporting component are respectively provided with a lower supporting block and a third rotating part, and a rotating shaft penetrates through the lower supporting block and the third rotating part to realize relative rotation.

In a further scheme, the corresponding waist top supporting member comprises a plurality of back top waist sheets which are arranged at intervals and extend along the same direction, and two adjacent back top waist sheets are connected through a connecting piece.

In a further scheme, a bearing surface for leaning on by a human body is arranged on the waist supporting member, one end of the waist supporting member is provided with a waist clamping member for clamping the waist side of the human body, a clamping and supporting surface for being attached to the waist side of the human body is arranged on the waist clamping member, the waist clamping member and the waist supporting member are arranged at an included angle, and the bearing surface and the clamping and supporting surface are intersected. Waist clamping member with be the contained angle setting between the waist shore component for form a space that can wrap up human waist between the two, supply human waist to get into in order to carry out the centre gripping to wrap up when leaning on.

In a further aspect, both the lumbar support member and the lumbar clamping member are integrally formed.

In a further aspect, the lumbar support member is rotatably connected to the lumbar clamping member. In this way, the lumbar clamping member can also be switched to a closed state, and when no lumbar clamping is desired, it is turned closed; when the waist clamping function is needed, the waist clamping device is turned over and opened.

In a further aspect, the angle between the lumbar clamping member and the lumbar top support member is 75-90 degrees.

Advantageous effects

The utility model discloses a with waist shore component upper end and support carrier sliding connection, simultaneously, waist shore component configuration is elastic material for waist shore component is when bearing backward pressure, and it is tensile to extend along longitudinal direction on the basis that produces deformation, makes when the human body sits, and the waist that waist shore component has presss from both sides tight component of waist and can carry human waist and produce ascending frictional force, in order to offset partial human gravity, plays the health care effect of tensile lumbar vertebrae.

Through the utility model discloses a design, be about to lumbar support unit and set up on being in the support carrier of seat support rear top, rather than drive lumbar support unit through the seat support, the seat support below need not set up the link mechanism who is used for driving lumbar support unit again, and the seat support is direct to be connected with the chassis of lower part and supports, has simplified the seat support structure.

Drawings

FIG. 1 is a schematic view showing a configuration of a lumbar support seat in which a lumbar clamp member is closed in embodiment 1;

FIG. 2 is a schematic view showing the configuration of the lumbar support seat of embodiment 1 with the lumbar clamping member in an open state;

FIG. 3 is a schematic view of the lumbar support seat of embodiment 1 from a back perspective with the lumbar clamping member in a closed state;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic structural view of a waist supporting member in embodiment 1;

FIG. 6 is a comparison between the front and rear waist brace members of example 1;

FIG. 7 is a schematic structural view of a waist portion clamping member in embodiment 1;

FIG. 8 is a plan view of the lumbar support seat of embodiment 1 with the lumbar clamping member in an open state and unclamped;

FIG. 9 is a plan view of the lumbar support seat of embodiment 1 held with the lumbar clamping member in an open state;

FIG. 10 is a schematic view and a partially enlarged view of the lumbar support seat of embodiment 1 from another perspective with the lumbar clamping member in a closed state;

FIG. 11 is a schematic view showing the configuration of the lumbar support seat of embodiment 2 with the lumbar clamping member in a closed state;

fig. 12 is an overall schematic view of the waist support seat of embodiment 1.

The reference numerals in the schematic drawings illustrate:

1-support carrier, 2-lumbar support unit, 21-lumbar support member, 211-medial region, 212-lateral region, 213-lumbar plate, 214-connecting member, 2141-avoidance groove, 22-lumbar clamping member, 221-through groove, 222-rib, 3-first fixing member, 4-first rotating member, 5-first limiting member, 6-second fixing member, 7-second rotating member, 8-second limiting member, 9-pin shaft, 10-sliding mechanism, 101-upper support block, 102-upper sliding groove, 11-first elastic member, 12-second elastic member, 13-seat, back support 30, chassis 31.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1: the utility model discloses a tensile glide machanism of lumbar support unit is the component of waist support seat, and the following is to whole detailed description:

referring to fig. 1-10, the present embodiment provides a waist support chair, which includes a support carrier 1 directly or indirectly connected to a chair seat of the chair and in an upright state; the supporting carrier 1 can be a back support, the lower end of the back support is directly connected to the chair seat, and the supporting carrier can also be connected to a chassis below the chair seat; of course, the support carrier 1 can also be a backrest, which can be connected directly to the seat or can be connected to the seat by a separately provided back support.

In the present embodiment, the support carrier 1 is a backrest, which is connected to the bottom plate 31 of the seat 13 by a back support 30, as shown in fig. 12, to perform a tilting movement of the backrest; more specifically, the backrest is divided into an upper backrest 1a and a lower backrest 1b, and two lumbar support units 2 are provided on the lower backrest 1b in bilateral symmetry. In the present solution, the lumbar support unit 2 includes a lumbar top support member 21 and a lumbar clamping member 22. As shown in fig. 1, 3 and 4, the lumbar support member 21 is pivotally connected to the lower back 1b of the support carrier 1, and a fulcrum 20 is formed at the pivotal connection. Specifically, the waist supporting member 21 is provided with a second rotating member 7 at the pivot 20, the back support 1 is provided with a second fixing member 6, and the second rotating member 7 and the second fixing member 6 are provided with a pin shaft 9 through to realize relative rotation.

The waist top support member 21 is provided with a bearing surface 51 for leaning of a human body, the waist clamping member 22 is provided with a clamping surface 52 for attaching to the waist side of the human body, an included angle is formed between the waist clamping member 22 and the waist top support member 21, and the bearing surface 51 and the clamping surface 52 are intersected when the waist clamping member 22 is opened; meanwhile, the waist top support member 21 has an inner region 211 and an outer region 212 respectively arranged at the left and right sides of the fulcrum 20, namely, the middle is inner and the two sides are outer along the width direction of the seat 13; the lumbar clamping member 22 is hinged with the outer side region 212 of the lumbar top support member 21 to enable the lumbar clamping member 22 itself to rotate relative to the lumbar top support member 21. Specifically, as shown in fig. 5 and 7, the first fixing part 3 is disposed in the outer region 212 of the waist top supporting member 21, the first rotating part 4 is disposed on the waist clamping member 22, and the pin 9 penetrates through the first rotating part 4 and the first fixing part 3 to realize relative rotation, so that the waist clamping member 22 can rotate relative to the waist top supporting member 21 to realize the switching between the open state and the closed state. More specifically, the first fixing member 3 is two parallel clamping pieces, the first rotating member 4 is a rotating block, the rotating block is located between the two parallel clamping pieces, and a pin shaft 9 penetrates through the rotating block to realize relative rotation. In this embodiment, in the open state, as shown in fig. 2, the lumbar clamping member 22 is opened away from the inner region 211 of the lumbar support member 21. In the closed state, as shown in fig. 1, the waist pinching member 22 is close to the inner region 211 of the waist top supporting member 21 or overlaps with the inner region 211 of the waist top supporting member 21.

As shown in fig. 9, in the front-rear direction of the seat 13, the front of the seat 13 is outward, and the rear of the seat 13 is inward; when the user leans against the seat, the support carrier 1, i.e., the backrest, is subjected to a force, and the inner side region 211 of the lumbar support member 21 is subjected to a force, which presses inward, i.e., rearward, to turn the outer side region 212 of the lumbar support member 21 outward. When the lumbar clamping member 22 is in the open state and the outer region 212 of the lumbar support member 21 is flipped outward, the outer region 212 of the lumbar support member 21 brings the lumbar clamping member 22 to rotate toward the center of the support carrier 1, i.e., the backrest, and to approach each other.

When the user leans against the backrest, the backrest is stressed, that is, the inner side region 211 of the lumbar support member 21 is pressed backwards, and the lumbar support member 21 is turned over to support the waist of the user in a folded manner. Meanwhile, the waist top support member 21 drives the waist top support members 21 with both sides in the open state to rotate towards the center direction of the support carrier 1, so as to clamp the waist on both sides of the user, thereby playing a role of waist clamping.

In addition, in the chair in the scheme, the waist supporting member 21 on the supporting carrier 1 drives the waist clamping member 22 to rotate, the sitting part, namely the chair seat 13, does not need to be added with other transmission mechanisms, the chair seat 13 is directly connected with the chassis at the lower part for supporting, the chair seat 13 comprises a seat board and a seat cushion above the seat board, and the seat cushion can be selected to have any material and shape and size according to the preference of a user.

As a preferred embodiment, the lumbar clamping member 22 is of a frame-type construction, as shown in fig. 7. Specifically, in the present embodiment, the lumbar clamping member 22 comprises a rectangular plate material, but it is understood that the specific shape thereof is not limited thereto, and may be circular, oval, or the like. The rectangular plate is provided with a plurality of through grooves 221 extending along the same direction.

Correspondingly, as shown in fig. 5, the lumbar support member 21 includes a plurality of back top waist panels 213 disposed at intervals and extending along the same direction, two adjacent back top waist panels 213 are connected by a connecting member 214, and the back top waist panels 213 correspond to the through slots 221. When the waist gripping member 22 is in the closed state, at least a part of the back top waist panel 213 is positioned in the corresponding through groove 221 or exposed forward from the through groove 221, and the through groove 221 functions as a relief. If the back top waist panel 213 is located in the corresponding through slot 221, the back top waist panel 213 can be used together with the waist clamping member 22 for the user to ride on to receive the pressure of the user. If the back top waist panel 213 is exposed forward of the through groove 221, the back of the user will only fit the back top waist panel 213 and will not contact the waist grip member 22 when the user is leaning on the back, thereby reducing the uneven feeling of the user's back contact surface. The use comfort of the user is improved.

In the present embodiment, as shown in fig. 1, 10, and 11, when the waist gripping member 22 is in the closed state, the back top waist panel 213 is exposed forward through the through-groove 221 or the front end surface of the back top waist panel 213 is exposed forward to the notch of the through-groove 221. Further, in order to avoid interference between the waist clamping member 22 and the waist supporting member 21, the connecting member 214 is located on the back surface of the back top waist piece 213, and the connecting members 214 located between two adjacent back top waist pieces 213 are each provided with an escape groove 2141 along the width direction thereof. The portion of the waist clamping member 22 between the adjacent through grooves 221 forms a rib 222, and when the waist clamping member 22 is in the closed state, the rib 222 is located in the escape groove 2141. And in order to form the escape groove 2141, the connection member 214 is a single connection member 214, and the escape groove 2141 is formed by bending the connection member 214 backward. In this embodiment, the through-groove 221 and the back top waist panel 213 extend in the transverse direction. However, it is also possible that both the through slots 221 and the back top waist panel 213 extend in the longitudinal direction.

In this embodiment, as shown in fig. 4 and 5, in order to prevent the user from rotating the waist clamping member 22 so that the waist clamping member 22 rotates relative to the waist top supporting member 21 beyond the stroke range, a first limiting member 5 for limiting the rotation angle of the waist clamping member 22 relative to the waist top supporting member 21 beyond a preset range is provided at the hinge joint of the waist clamping member 22 and the waist top supporting member 21.

In a preferred embodiment, the first position-limiting member 5 in this embodiment is a screw, which is screwed to the connecting member 214, and one end of the screw abuts against the lumbar clamping member 22 during position-limiting, specifically, the first rotating member 4 of the lumbar clamping member 22. When the waist clamping member 22 rotates to a designated angle relative to the waist top support member 21, one end of the screw abuts against the waist clamping member 22 to achieve a limit. And the user can be according to the size of self size, independently turn round the screw, and the adjusting screw surpasss the length of first mounting 3, realizes then that waist clamping member 22 is for the spacing turned angle's of waist shore member 21 regulation for this seat is applicable to the user of each size. Although the screw is screwed to the connector 214 in this embodiment, the screw may be screwed to the lumbar clamping member 22 and one end of the screw may abut against the lumbar support member 21. And it is easy to understand that although the present embodiment adopts a screw as the first limiting member 5, it is easy to understand that other limiting members in the prior art, such as a ratchet mechanism, can also be adopted under the condition of ensuring that the rotation angle of the waist clamping member 22 relative to the waist supporting member 21 does not exceed the preset range.

Similarly, the waist top support member 21 is provided with a second limiting part 8 at the fulcrum 20 for limiting the rotation angle of the waist top support member 21 relative to the support carrier 1 to exceed a preset range; as a specific embodiment, the second position-limiting element 8 is a position-limiting post, which is fixedly disposed on the second rotating element 7, and when the waist top-supporting member 21 rotates to a predetermined limited angle relative to the supporting carrier 1, the position-limiting post abuts against the second fixing element 6 to realize position limitation.

In this embodiment, the waist supporting member 21 is made of an elastic material, and specifically, the waist supporting member 21 is made of plastic. Referring to fig. 6, when no external force is applied, the whole waist supporting member 21 is protruded forward in an arc shape. When the waist supporting member 21 is subjected to a rearward pressing force, the waist supporting member 21 is stretched in the longitudinal direction along the support carrier 1 (i.e., the waist back panel 213 and the connecting member 214 are deformed to be stretched in the longitudinal direction). Make waist top stay component 21 and user's back closely laminate, the comfort level is higher, and in the process that waist top stay component 21 extends at the longitudinal direction along supporting carrier 1, give user's back a power opposite with the gravity direction, also played the effect of certain bearing to the user, alleviated lumbar vertebrae atress.

In order to facilitate the lumbar support member 21 to extend in the longitudinal direction along the back frame 1, in the present embodiment, still further, at least one of the upper and lower ends of the lumbar support member 21 is slidably connected to the support carrier 1 in the longitudinal direction. Specifically, as shown in fig. 10, the upper end of the lumbar top support member 21 is slidably and pivotally connected to the support carrier 1, and the lower end of the lumbar top support member 21 is rotatably connected to the support carrier 1 and is kept relatively fixed to the support carrier 1 in the longitudinal direction. More specifically, the upper portion of the support carrier 1 is slidably connected to the upper end of the lumbar support member 21 by a sliding mechanism 10. The sliding mechanism 10 includes an upper support block 101 and an upper chute 102, the upper end of the lumbar top support member 21 is pivotally connected to the upper support block 101 to form the fulcrum 20, a larger entrance 103 is formed at the lower end of the upper chute 102, the upper chute 102 has a narrower slide 105 and an accommodating portion (not shown) located inside the slide 105, the upper support block 101 is divided into an inner portion (not shown) and an outer portion 104, the inner portion of the upper support block 101 enters the upper chute 102 from the entrance 103 and is clamped in the upper chute 102 and slidably connected to the upper chute 102, and the inner portion of the upper support block 101 is wider than the slide 105 and therefore cannot fall out of the upper chute 102. Meanwhile, the lower part of the support carrier 1 and the lower end of the waist top support member 21 are respectively provided with a lower support block and a third rotating part, and a rotating shaft penetrates through the lower support block and the third rotating part to realize relative rotation. In this embodiment, the lower supporting block and the third rotating member are the second fixing member 6 and the second rotating member 7. When the waist supporting member 21 is subjected to a force of pressing backward, the upper stay 101 slides upward relative to the upper slide groove 102, and the lower stay and the third rotating member have a rotating shaft penetrating therethrough to realize relative rotation, but remain stationary in the longitudinal direction. Thereby, the lumbar support member 21 is stretched in the longitudinal direction along the back bracket 1.

Easy understanding, the user normally sits on the seat, and user's lumbar vertebrae strain can be caused after taking for a long time to its lumbar vertebrae atress, and through the waist of 21 centre gripping users of waist shore member in this scheme, applys certain clamping-force in waist department, waist shore member 21 extends at longitudinal direction along supporting the carrier, and waist clamping member can rebound promptly, and human waist is pasting waist clamping member, and waist clamping member can apply an ascending supporting force to human waist, offsets with user self gravity part, plays and alleviates the lumbar vertebrae atress, alleviates the effect of lumbar vertebrae strain. Similarly, the waist top supporting member 21 rotates towards the center of the supporting carrier 1 to clamp the waist at the two sides of the user, and also provides an upward supporting force for the waist of the patient, so as to relieve the stress of the lumbar.

Meanwhile, when the user does not need the lumbar grip, the seat only needs to rotate the lumbar clamping member 22 so that the lumbar clamping member 22 coincides with the inner side region 211 of the lumbar top support member 21. Can adjust by oneself according to user's demand, convenient and fast, the suitability is high.

As shown in fig. 4, a first elastic element 11 is further disposed between the waist top supporting member 21 and the back frame 1, and when the inner side region 211 of the waist top supporting member 21 loses the action of the backward external force, the first elastic element 11 drives the waist top supporting member 21 to return. In a specific embodiment, the first elastic element 11 is a torsion spring, the torsion spring is sleeved on the pin 9 between the second fixing element 6 and the second rotating element 7, and two ends of the torsion spring are respectively fixed to the second fixing element 6 and the second rotating element 7. When the waist supporting member 21 rotates relative to the back frame 1, the second fixing member 6 and the second rotating member 7 rotate relative to each other, and the torsion spring is deformed. When the waist top support member 21 loses the external force, the torsion spring rebounds to drive the second fixing piece 6 and the second rotating piece 7 to reset.

Example 2: referring to fig. 11, the main difference between the present embodiment and the above embodiment 1 is that the two waist top supporting members 21 are connected by the second elastic member 12, and the second elastic member 12 and the waist top supporting member 21 are integrally formed.

Example 3: the main difference between this embodiment and the above embodiment 1 is that in this embodiment, the waist top supporting members 21 are connected by at least one link (not shown), and both ends of the link are rotatably connected to one waist top supporting member 21.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A lumbar support unit stretch glide, comprising:

2. The lumbar support unit extension slide mechanism of claim 1, wherein the lower portion of the support carrier and the lower end of the lumbar support member are provided with a lower support block and a third rotating member, and the lower support block and the third rotating member are provided with a rotating shaft for relative rotation.

3. The lumbar support unit extension slide mechanism of claim 2, wherein the lumbar support member comprises a plurality of spaced lumbar panels extending in the same direction, and two adjacent lumbar panels are connected by a connecting member.

4. The stretching and sliding mechanism of a lumbar support unit according to claim 1, wherein said lumbar support member is provided with a support surface for supporting a human body, one end of said lumbar support member is provided with a lumbar clamping member for clamping the lumbar side of the human body, said lumbar clamping member is provided with a support surface for contacting the lumbar side of the human body, said lumbar clamping member and said lumbar support member are arranged at an angle, and the support surface meet each other.

5. Stretching slide mechanism of a lumbar support unit according to claim 4, characterized in that the lumbar top support member and the lumbar clamping member are both integrally formed.

6. The lumbar support unit extension slide mechanism of claim 4, wherein there is a rotational connection between the lumbar top support member and the lumbar clamping member.

7. The lumbar support unit extension slide mechanism of claim 4, wherein an angle between the lumbar clamping member and the lumbar top support member is 75-90 degrees.