CN220384685U - Multifunctional waist supporting assembly - Google Patents

Abstract

The utility model relates to a multifunctional waist support assembly, which belongs to the technical field of seats and comprises: the waist support comprises a waist support body, a sliding block rotationally connected with the waist support body and a waist support base slidingly connected with the sliding block, wherein a first compression spring is arranged between the waist support body and the sliding block, when the waist support body is stressed, the waist support body rotates backwards and leans up until a certain angle, and a rotating upper limit boss on the waist support body props against a rotating upper limit rib on the sliding block, so that the first compression spring is compressed; when the waist supporting main body is relaxed, the first compression spring rebounds, the waist supporting main body rebounds until the rotation lower limit boss on the waist supporting main body props against the rotation lower limit rib on the sliding block, the waist tracking function is realized, the waist supporting main body is in sliding connection with the waist supporting main body through the sliding block, the waist supporting main body lifting adjustment is realized, and the use requirements of people with different heights are met.

Description

Multifunctional waist supporting assembly

Technical Field

The utility model belongs to the technical field of seats, and relates to a multifunctional waist supporting assembly, in particular to a multifunctional waist supporting assembly suitable for an office seat.

Background

In modern life, office furniture is more and more various, and the functional requirements of users on the office furniture are also higher and higher, wherein the comfort of the office chair plays a key role for the health of the users in offices.

One key part affecting the comfort is the waist support position of the swivel chair, but the existing traditional office chair backrest cannot conform to the ergonomics, and the waist support position cannot be timely supported after leaning forward or leaning backward, so that the comfort is poor.

Meanwhile, at present, most office chairs only can lift the part above the base of the supporting leg of the chair integrally, but can not lift the backrest of the chair, which is not beneficial to sitting of people with high stature, in particular to supporting the waist.

Disclosure of Invention

In view of the above, the utility model provides a multifunctional waist support assembly for solving the problems that the backrest of the traditional office chair cannot conform to the ergonomics, the waist-off position cannot be supported in time after leaning forward or leaning backward, the comfort is poor, and most office chairs cannot support the waist of the chair to lift.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a multi-functional lumbar support assembly comprising:

a main body of the waist support,

the sliding block is rotationally connected with the waist supporting main body;

the waist supporting base is connected with the sliding block in a sliding way;

a first compression spring is arranged between the waist supporting main body and the sliding block.

Further, a connecting groove is arranged on the waist supporting main body, second rotating shaft holes are formed in two sides of the connecting groove, and a rotating upper limiting boss and a rotating lower limiting boss are arranged on the inner side of the connecting groove.

Further, the sliding block is provided with a spring placing hole for accommodating the first compression spring, and is provided with an upper rotation limiting rib and a lower rotation limiting rib which are respectively matched with the upper rotation limiting boss and the lower rotation limiting boss for use; the middle position of the sliding block on the side opposite to the spring placing hole is provided with a limiting pin fixing hole, two sides of the sliding block are provided with sliding grooves, the sliding block is provided with a first rotating shaft hole matched with the second rotating shaft hole, and rotating shafts are inserted into the first rotating shaft hole and the second rotating shaft hole. The beneficial effects are that: the pivot runs through second pivot hole and first pivot hole, through the pivot, realizes holding in the palm the rotation of waist main part and sliding block and is connected.

Further, one end of the first compression spring is placed in the spring placement hole, and the other end of the first compression spring abuts against the waist support main body. The beneficial effects are that: when the waist supporting main body is stressed, the waist supporting main body rotates backwards and leans to a certain angle, and then the rotating upper limiting boss on the waist supporting main body props against the rotating upper limiting rib on the sliding block, so that the first compression spring is compressed; when the waist supporting main body is relaxed, the first compression spring rebounds, and the waist supporting main body rebounds until the rotation lower limit boss on the waist supporting main body props against the rotation lower limit rib on the sliding block, so that the rotation waist following function is realized.

Further, the waist supporting base is provided with a spring block movement groove, a limit pin groove matched with the limit pin fixing hole is formed in the spring block movement groove, the inner wall of the spring block movement groove is respectively provided with a step, gear teeth and a boss, the waist supporting base close to one side of the step is provided with a fixing groove, the waist supporting base close to one side of the boss is provided with a plurality of screw holes, and two sides of the spring block movement groove are provided with sliding parts matched with the sliding grooves. The beneficial effects are that: the sliding connection between the waist supporting base and the sliding block is realized through the sliding connection between the sliding piece and the sliding groove.

Further, the first lifting limiting elastic block fixed with the sliding block and the second lifting limiting elastic block sleeved with the first lifting limiting elastic block are accommodated in the elastic block movement groove, the second lifting limiting elastic block is provided with a cylindrical hole matched with the limiting pin fixing hole, and the first lifting limiting elastic block is provided with a cylindrical ring matched with the cylindrical hole. The beneficial effects are that: the first lifting limiting elastic block and the second lifting limiting elastic block are sleeved through the cylindrical ring and the cylindrical hole.

Further, the same limiting pin is inserted into the cylindrical ring, the cylindrical hole, the limiting pin groove and the limiting pin fixing hole. The beneficial effects are that: through the spacer pin, realize the fixed connection of first spacing bullet piece of going up and down of second spacing bullet piece of going up and down and sliding block, the sliding block drives the spacer pin and slides from top to bottom simultaneously, and the spacer pin slides in the spacer pin inslot, and the both ends of spacer pin inslot are used for controlling the sliding stroke of spacer pin and prevent that the sliding block from deviating from the spout, and the spacer pin drives the spacing bullet piece of first lift and the spacing bullet piece of second lift and slides from top to bottom.

Further, the lower parts of the cylindrical ring and the cylindrical hole are respectively provided with a clamping cylindrical head and a clamping cylindrical groove matched with the clamping cylindrical head, a first spring fixing column and a second spring fixing column are respectively arranged between the cylindrical ring and the clamping cylindrical head and between the cylindrical hole and the clamping cylindrical groove, and a second compression spring is sleeved between the first spring fixing column and the second spring fixing column.

Further, a first gear jack and a second gear jack which are propped against the inner wall of the elastic block movement groove are respectively arranged on the first lifting limiting elastic block and the second lifting limiting elastic block.

Further, support waist base assembly has the back fossil fragments, and the back fossil fragments are provided with and support waist base groove, support waist base groove upper portion be provided with the fixed boss of fixed slot looks adaptation, support waist base groove lower part be provided with screw hole looks adaptation screw post. The beneficial effects are that: through fixed slot and fixed boss and screw hole and screw post, the swift installation of support waist subassembly and back fossil fragments is realized.

The utility model has the beneficial effects that:

1. according to the multifunctional waist supporting assembly disclosed by the utility model, the rotating shaft penetrates through the first rotating shaft hole and the second rotating shaft hole, so that the waist supporting main body is connected with the rotating shaft of the sliding block, the waist supporting main body rotates backwards to tilt to a certain angle when being stressed by the first compression spring, and the rotating upper limiting boss on the waist supporting main body abuts against the rotating upper limiting rib on the sliding block, so that the first compression spring is compressed; when the waist supporting main body is relaxed, the first compression spring rebounds, and the waist supporting main body rebounds until the rotation lower limit boss on the waist supporting main body props against the rotation lower limit rib on the sliding block, so that the rotation waist following function is realized.

2. According to the multifunctional waist supporting assembly disclosed by the utility model, the sliding connection between the sliding block and the waist supporting base is realized through the sliding fit of the sliding piece and the sliding groove, so that the lifting adjustment of the waist supporting main body is realized, and the use requirements of people with different heights are met.

3. According to the multifunctional waist supporting assembly disclosed by the utility model, the sliding block slides to drive the limiting pin to slide up and down, the first lifting limiting elastic block and the second lifting limiting elastic block are driven to slide up and down, and the first lifting limiting elastic block and the second lifting limiting elastic block are arranged in the elastic block movement groove and are extruded and supported by steps, gear teeth and bosses, so that the gear lifting adjustment of the waist supporting main body in a circulating and reciprocating mode is realized.

4. According to the multifunctional waist supporting assembly disclosed by the utility model, the limiting pin slides in the limiting pin, and the sliding stroke of the limiting pin is controlled by the two ends of the limiting pin groove, so that the sliding block is prevented from falling out of the second dovetail groove.

5. The multifunctional waist support assembly disclosed by the utility model can be independently disassembled and packaged, and has the advantages of small occupied packaging volume, convenience in installation and strong applicability.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a multi-functional lumbar support assembly according to the present utility model;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic view of the structure of the waist supporting body in the multifunctional waist supporting assembly according to the present utility model;

fig. 4 is a schematic structural view of a sliding block in the multifunctional waist supporting assembly according to the present utility model;

fig. 5 is a schematic structural view of a sliding block in the multifunctional waist supporting assembly according to the second embodiment of the present utility model;

fig. 6 (a) is a diagram illustrating a first rotation operation state of the waist supporting body in the multifunctional waist supporting assembly according to the present utility model;

fig. 6 (b) is a second rotation working state of the waist supporting main body in the multifunctional waist supporting assembly of the present utility model;

fig. 7 is a schematic structural view of a lumbar support base in the multifunctional lumbar support assembly of the present utility model;

fig. 8 is a schematic structural view of a first lifting limiting elastic block in the multifunctional waist supporting assembly of the present utility model;

fig. 9 is a schematic structural view of a second lifting limiting elastic block in the multifunctional waist supporting assembly of the present utility model;

FIG. 10 is a schematic view of a second compression spring in the multi-functional lumbar support assembly of the present utility model;

FIG. 11 (a) is a view showing the state that the lumbar support body slides to the top of the lumbar support base in the multi-functional lumbar support assembly of the present utility model;

FIG. 11 (b) is a view showing the state where the lumbar support body slides down in the multi-functional lumbar support assembly of the present utility model;

FIG. 11 (c) is a view showing the waist supporting body sliding to the bottom of the waist supporting base in the multifunctional waist supporting assembly according to the present utility model;

FIG. 11 (d) is a state diagram showing the waist supporting body sliding upward in the multifunctional waist supporting assembly according to the present utility model;

figure 12 is a cross-sectional view of the multi-functional lumbar support assembly of the present utility model;

figure 13 is a schematic view of a partial structure of a back keel in the multi-functional lumbar support assembly of the present utility model;

figure 14 is an assembly view of the multi-functional lumbar support assembly and back bone of the present utility model.

Reference numerals: the lumbar support body 1, the rotation upper limit boss 11, the rotation lower limit boss 12, the second rotation shaft hole 13, the sliding block 2, the spring placement hole 21, the first compression spring 22, the limit pin fixing hole 23, the first dovetail groove 24, the first rotation shaft hole 25, the rotation upper limit rib 26, the rotation lower limit rib 27, the rotation shaft 3, the limit pin 4, the lumbar support base 5, the fixing groove 51, the step 52, the limit pin groove 53, the gear tooth 54, the boss 55, the screw hole 56, the spring block movement groove 57, the second dovetail groove 58, the first lifting limit spring block 6, the cylindrical ring 61, the first spring fixing column 62, the clamping cylindrical head 63, the first gear top column 64, the second lifting limit spring block 7, the cylindrical hole 71, the second spring fixing column 72, the clamping cylindrical groove 73, the second gear top column 74, the second compression spring 8, the back support keel 9, the lumbar support base groove 91, the fixing boss 92, and the screw column 93.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

The multifunctional waist supporting assembly as shown in fig. 1-12 comprises a waist supporting main body 1, a sliding block 2 connected with the waist supporting main body 1 through a rotating shaft 3 and a waist supporting base 5 connected with the sliding block 2 in a sliding manner.

The waist supporting main body 1 is provided with a connecting groove, two sides of the connecting groove are provided with second rotating shaft holes 13, and the inner side of the connecting groove is provided with a rotating upper limit boss 11 and a rotating lower limit boss 12.

The sliding block 2 is provided with a spring placing hole 21, and is provided with a rotating upper limit rib 26 and a rotating lower limit rib 27 which are respectively matched with the rotating upper limit boss 11 and the rotating lower limit boss 12 for use, a first compression spring 22 is placed in the spring placing hole 21, one end of the first compression spring 22 is placed in the spring placing hole 21, the other end of the first compression spring is propped against the waist supporting main body 1, and when the waist supporting main body 1 is stressed, the sliding block is backwards rotated and leaned until a certain angle is reached, the rotating upper limit boss 11 on the waist supporting main body 1 props against the rotating upper limit rib 26 on the sliding block 2, and at the moment, the first compression spring 22 is compressed; when the waist supporting main body 1 is relaxed, the first compression spring 22 rebounds, and the waist supporting main body 1 rebounds until the rotation lower limit boss 12 on the waist supporting main body 1 abuts against the rotation lower limit rib 27 on the sliding block 2, so that the rotation waist following function is realized. The limiting pin fixing hole 23 is formed in the middle of the sliding block 2 on the side opposite to the spring placing hole 21, sliding grooves are formed in two sides of the sliding block 2, the sliding grooves can be formed into first dovetail grooves 24 or T-shaped grooves, fixing columns are arranged between the rotating lower limiting ribs 27 and the spring placing hole 21, first rotating shaft holes 25 matched with the second rotating shaft holes 13 are formed in the fixing columns, rotating shafts 3 are inserted into the first rotating shaft holes 25 and the second rotating shaft holes 13, the rotating shafts 3 penetrate through the second rotating shaft holes 13 and the first rotating shaft holes 25, and rotating connection of the waist supporting main body 1 and the sliding block 2 is achieved through the rotating shafts 3.

The waist supporting base 5 is provided with a waist supporting base 57, the interior of the waist supporting base 57 is provided with a limiting pin groove 53 which is matched with the limiting pin fixing hole 23, the inner wall of the waist supporting base 57 is respectively provided with a step 52, gear teeth 54 and a boss 55, the waist supporting base 5 close to one side of the step 52 is provided with a fixing groove 51, the waist supporting base 5 close to one side of the boss 55 is provided with two screw holes 56, two sides of the waist supporting base 57 are provided with sliding pieces which are matched with sliding grooves, the sliding pieces can be second dovetail grooves 58 which are matched with the first dovetail grooves 24, and also can be T-shaped bosses which are matched with the T-shaped grooves, and the sliding connection of the waist supporting base and the sliding pieces is realized through sliding connection of the first dovetail grooves 24 and the second dovetail grooves 28 or the T-shaped bosses and the T-shaped grooves.

The first lifting limiting elastic block 6 fixed with the sliding block 2 and the second lifting limiting elastic block 7 sleeved with the first lifting limiting elastic block 6 are accommodated in the elastic block moving groove 57, the second lifting limiting elastic block 7 is provided with a cylindrical hole 71 matched with the limiting pin fixing hole 23, the first lifting limiting elastic block 6 is provided with a cylindrical ring 61 matched with the cylindrical hole 71, sleeving of the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 is achieved through the cylindrical ring 61 and the cylindrical hole 71, a clamping position cylindrical head 63 and a clamping position circular groove 73 matched with the clamping position cylindrical head 63 are respectively arranged below the cylindrical ring 61 and the cylindrical hole 71, a first spring fixing column 62 and a second spring fixing column 72 are respectively arranged between the cylindrical ring 61 and the clamping position cylindrical head 63 and between the cylindrical hole 71 and the clamping position circular groove 73, a second compression spring 8 is sleeved between the first spring fixing column 62 and the second spring fixing column 72, and a first lifting limiting elastic block 6 and a second lifting limiting elastic block 7 are respectively provided with a first clamping position cylindrical head 64 and a second clamping position cylindrical head 74 matched with the inner wall of the sliding block moving block.

The same limiting pin 4 is inserted into the cylindrical ring 61, the cylindrical hole 71, the limiting pin groove 53 and the limiting pin fixing hole 23, the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 are fixedly connected with the sliding block 2 through the limiting pin 4, meanwhile, the sliding block 2 drives the limiting pin 4 to slide up and down, the limiting pin 4 slides in the limiting pin groove 53, two ends of the limiting pin groove 53 are used for controlling the sliding stroke of the limiting pin 4 and preventing the sliding block 2 from falling out of the second dovetail groove 58, and the limiting pin 4 drives the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 to slide up and down.

Referring to fig. 11, specifically, the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 slide up and down. When the waist supporting main body 1 slides to the top position relative to the waist supporting base 5, at this time, the outer side surfaces of the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 are extruded by the step 52 on the waist supporting base 5, the clamping cylindrical head 63 on the first lifting limiting elastic block 6 overcomes the elastic force of the second compression spring 8, and the clamping cylindrical head 63 is clamped in the clamping circular groove 73 of the second lifting limiting elastic block 7, so that the waist supporting main body 1 can slide downwards freely. When the waist supporting main body 1 slides downwards to the bottom of the elastic block movement groove 57, at the moment, the inner side surfaces of the first gear jack 64 and the second gear jack 74 on the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 are contacted with the boss 55, the boss 55 is stressed, and the force of the clamping cylindrical head 63 and the clamping circular groove 73 is overcome, so that the first gear jack 64 and the second gear jack 74 are spread towards two sides. The first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 are stressed by the second compression spring 8, the first gear jack 64 and the second gear jack 74 are propped against the gear teeth 54 on two sides of the elastic block movement groove 57, at the moment, the waist supporting main body 1 can only slide upwards and cannot slide downwards, and the waist supporting main body 1 realizes the cyclic reciprocating gear lifting adjustment.

Referring to fig. 13-14, the lumbar support assembly is assembled with the back keel 9 through the lumbar support base 5, the back keel 9 is provided with a lumbar support base groove 91, a fixing boss 92 matched with the fixing groove 51 is arranged on the upper portion of the lumbar support base groove 91, the lumbar support assembly is assembled with the back keel 9 through the fixing boss 92 and the fixing groove 51, two screw columns 93 matched with the screw holes 56 are arranged on the lower portion of the lumbar support base groove 91, and the lumbar support assembly is fixed with the back keel 9 through screws.

When the waist support assembly is used, the waist support main body 1 rotates backwards until a certain angle is reached when being stressed, the rotating upper limit boss 11 on the waist support main body 1 props against the rotating upper limit rib 26 on the sliding block 2, and the first compression spring 22 is compressed at the moment; when the waist supporting main body 1 is relaxed, the first compression spring 22 rebounds, and the waist supporting main body 1 rebounds until the rotation lower limit boss 12 on the waist supporting main body 1 abuts against the rotation lower limit rib 27 on the sliding block 2, so that the rotation waist following function is realized. When the height of the waist supporting main body 1 needs to be adjusted, the limiting pin 4 is operated, the sliding block 2 and the waist supporting base 5 are slid, the first lifting limiting elastic block 6 and the second lifting limiting elastic block 7 are driven to slide up and down, and the use requirements of people with different heights are met.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims (10)

1. A multi-functional lumbar support assembly, comprising:

a main body of the waist support,

the sliding block is rotationally connected with the waist supporting main body;

the waist supporting base is connected with the sliding block in a sliding way;

a first compression spring is arranged between the waist supporting main body and the sliding block.

2. The multi-functional lumbar support assembly of claim 1, wherein the lumbar support body is provided with a connecting slot, second rotating shaft holes are formed on two sides of the connecting slot, and a rotating upper limit boss and a rotating lower limit boss are arranged on the inner side of the connecting slot.

3. The multi-functional lumbar support assembly of claim 2, characterized in that the sliding block is provided with a spring placement hole for accommodating the first compression spring, and is provided with an upper rotation limit rib and a lower rotation limit rib which are respectively matched with the upper rotation limit boss and the lower rotation limit boss for use; the middle position of the sliding block on the side opposite to the spring placing hole is provided with a limiting pin fixing hole, two sides of the sliding block are provided with sliding grooves, the sliding block is provided with a first rotating shaft hole matched with the second rotating shaft hole, and rotating shafts are inserted into the first rotating shaft hole and the second rotating shaft hole.

4. The multi-functional lumbar support assembly of claim 1 wherein said first compression spring is positioned at one end in the spring placement aperture and the other end abuts the lumbar support body.

5. The multifunctional waist supporting assembly according to claim 3, wherein the waist supporting base is provided with a spring block movement groove, a limit pin groove matched with the limit pin fixing hole is formed in the spring block movement groove, the inner wall of the spring block movement groove is respectively provided with a step, gear teeth and a boss, the waist supporting base close to one side of the step is provided with a fixing groove, the waist supporting base close to one side of the boss is provided with a plurality of screw holes, and two sides of the spring block movement groove are provided with sliding pieces matched with the sliding grooves.

6. The multi-functional lumbar support assembly of claim 5, wherein the bullet movement groove accommodates a first lifting limiting bullet fixed with the sliding block and a second lifting limiting bullet sleeved with the first lifting limiting bullet, the second lifting limiting bullet is provided with a cylindrical hole matched with the fixing hole of the limiting pin, and the first lifting limiting bullet is provided with a cylindrical ring matched with the cylindrical hole.

7. The multi-functional lumbar support assembly of claim 6, wherein the cylindrical ring, the cylindrical bore, the stop pin slot, and the stop pin securing bore are configured with the same stop pin.

8. The multi-functional lumbar support assembly according to claim 6, wherein the lower portions of the cylindrical ring and the cylindrical hole are respectively provided with a clamping cylindrical head and a clamping cylindrical groove matched with the clamping cylindrical head, a first spring fixing column and a second spring fixing column are respectively arranged between the cylindrical ring and the clamping cylindrical head and between the cylindrical hole and the clamping cylindrical groove, and a second compression spring is sleeved between the first spring fixing column and the second spring fixing column.

9. The multi-functional lumbar support assembly of claim 6, wherein the first and second lifting stop blocks are provided with first and second gear posts respectively that are in abutment with the inner walls of the block movement slots.

10. The multifunctional lumbar support assembly of any one of claims 5-9, wherein the lumbar support base is provided with a back keel, the back keel is provided with a lumbar support base groove, the upper part of the lumbar support base groove is provided with a fixing boss matched with the fixing groove, and the lower part of the lumbar support base groove is provided with a screw column matched with the screw hole.