CN217658870U

CN217658870U - Waist rest of office chair backrest

Info

Publication number: CN217658870U
Application number: CN202221880746.2U
Authority: CN
Inventors: 廖建甜
Original assignee: Foshan Hengfa Furniture Technology Co ltd
Current assignee: Foshan Hengfa Furniture Technology Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-10-28
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a waist of office chair back leans on, a serial communication port, it leans on the support frame including the waist by the board subassembly and with the waist that the board subassembly is connected, the waist leans on the support frame include with the waist lean on the regulation supporting seat of board subassembly connection and with adjust the supporting leg of supporting seat connection, the supporting leg is connected on the back of office chair, it includes fixed sleeve to adjust the supporting seat, the activity endotheca of setting in fixed sleeve, screw rod assembly with activity endotheca threaded connection, the end connection waist of activity endotheca leans on the board subassembly, be provided with sharp guiding mechanism between activity endotheca and the fixed sleeve, through rotating screw rod assembly drive activity endotheca along sharp guiding mechanism displacement. The utility model discloses simple structure, operation convenient to use.

Description

Waist rest of office chair backrest

Technical Field

The utility model relates to an office chair technical field, more specifically relate to an office chair back.

Background

The chair is a common living appliance, the office chair has longer service life than a common chair due to different use environments, but the backrest of the office chair in the prior art is relatively fixed and cannot be adjusted, and the office chair is uncomfortable to use for a long time. If chinese patent application number is CN202220724141.8, a novel official working rebounding chair, cooperation setting through back and the netted cushion of soft silica gel, during the installation seat, the netted cushion of soft silica gel is directly hung on skeleton texture's back, can freely dismantle the change to the netted cushion of soft silica gel simultaneously, through the adjustable shelf, the headrest, the connecting rod, handrail and pneumatic rod's cooperation setting, can adjust preceding back festival to the seat, thereby adjust user's position of sitting, improve the travelling comfort of user's during operation, it is more convenient to use. But has the defect that the waist part can not be adjusted, so that people with the height not matched with the seat can not well support the waist and the back when using the chair. If chinese patent application number is CN202122877140.5 again, a be applied to waist on office chair leans on adjusting device, including waist by and mount pad, the waist leans on and is connected through adjusting device between the mount pad, adjusting device is including being used for the waist to lean on the front and back adjustment mechanism who carries out front and back position control and being used for the waist to lean on the upper and lower adjustment mechanism who carries out position control from top to bottom, front and back adjustment mechanism installs in the mount pad, adjustment mechanism about the action end connection of front and back adjustment mechanism, the waist is connected to upper and lower adjustment mechanism's action end, be equipped with between waist by and the mount pad and be used for user's hand to stretch into the operation front and back adjustment mechanism of carrying out waist by front and back position control's operation interval, through twisting adjust knob and promote the waist from top to bottom and lean on, can realize front and back position control and upper and lower position control that the waist leaned on, can adapt to the crowd of different sizes and use, but the shortcoming is that the structure is comparatively complicated, and the installation is inconvenient.

Disclosure of Invention

The utility model aims at providing a waist rest of an office chair backrest which has simple structure, convenient and rapid installation and cost saving in order to solve the defects of the prior art.

The utility model discloses an adopt following technical solution to realize above-mentioned purpose: a waist rest of an office chair backrest is characterized by comprising a waist rest plate component and a waist rest support frame connected with the waist rest plate component, wherein the waist rest support frame comprises an adjusting support seat connected with the waist rest plate component and a support foot frame connected with the adjusting support seat, the support foot frame is connected to a backrest of an office chair,

the adjusting support seat comprises a fixed sleeve, a movable inner sleeve arranged in the fixed sleeve and a screw rod assembly in threaded connection with the movable inner sleeve, the end part of the movable inner sleeve is connected with the waist support plate assembly, a linear guide mechanism is arranged between the movable inner sleeve and the fixed sleeve, and the movable inner sleeve can be driven to move along the linear guide mechanism by rotating the screw rod assembly so as to drive the waist support plate assembly to move back and forth.

As a further explanation of the above scheme, the lumbar support plate assembly comprises a lumbar support bottom shell and a lumbar support panel, the lumbar support bottom shell is provided with an upper position adjusting slot hole and a lower position adjusting slot hole, a locking plate block tightly attached to the upper position adjusting slot hole and the lower position adjusting slot hole is arranged in the lumbar support bottom shell, and a fastening piece is arranged on the locking plate block and connected and fixed with the adjusting support seat.

Furthermore, a connecting end is movably arranged at the end part of the fixed sleeve, the end part of the movable inner sleeve is connected with the connecting end, and the connecting end is fixedly connected with the waist support plate assembly.

Furthermore, the connecting end is cylindrical, a boss is arranged on the end face of the connecting end, and the fastening piece on the locking plate is fixedly connected with the boss.

Furthermore, the end cover plate is arranged at the end part of the fixed sleeve, the positioning marble is embedded in the end cover plate, the connecting end is provided with a positioning hole for accommodating the positioning marble to protrude outwards, a plurality of positioning grooves are arranged on the back of the waist leaning plate component from top to bottom, and the positioning marble is movably matched with the positioning grooves in a jacking mode.

Further, the screw assembly comprises a screw rod arranged in the movable inner sleeve and a knob arranged at the rear part of the fixed sleeve, the knob is fixedly connected with the screw rod, and the screw rod is driven to rotate by rotating the knob, so that the movable inner sleeve is driven to move forwards or backwards relative to the fixed sleeve, and the lumbar support plate assembly can move forwards or backwards for adjustment.

Further, the supporting foot rest includes the supporting plate frame that is connected with fixed sleeve, with supporting plate frame swing joint's lift direction support, and the lower part of supporting plate frame is provided with the lug, lift direction support be provided with lug sliding fit's guide slot for the supporting plate frame can slide along the guide slot, thereby adjusts the height position that whole waist leaned on.

Furthermore, the linear guide mechanism comprises at least two convex ribs arranged on the side surface of the movable inner sleeve, the convex ribs are parallel to the axis of the movable inner sleeve, guide grooves corresponding to the convex ribs are arranged in the fixed sleeve, and the movable inner sleeve is provided with inner threads which are in threaded connection with the screw rod assembly.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is.

The utility model discloses a mainly lean on the board subassembly by the waist and lean on the structure by the office chair waist that the support frame constitutes with the waist by the waist of board subassembly connection, the waist leans on the support frame include with the waist lean on the regulation supporting seat of board subassembly connection and with adjust the supporting foot rest of supporting seat connection, the supporting foot rest is connected on the back of office chair, adjust the supporting seat and include fixed sleeve, the movable endotheca of setting in fixed sleeve, screw rod assembly with movable endotheca threaded connection, the end connection waist of activity endotheca leans on the board subassembly, be provided with sharp guiding mechanism between activity endotheca and the fixed sleeve, can drive movable endotheca along sharp guiding mechanism displacement through rotating screw rod assembly, thereby it leans on the board subassembly back-and-forth movement to drive the waist, moreover, the steam generator is simple in structure, the operation is adjusted conveniently.

Drawings

Fig. 1 is the utility model discloses a waist leans on board components mounting structure schematic diagram.

Figure 2 is a schematic view of a lumbar support plate assembly.

Figure 3 is a schematic view of a lumbar support plate assembly.

Fig. 4 is a schematic view of the structure of the bottom case of the lumbar support.

Fig. 5 is a back structure diagram of the lumbar support bottom case.

Fig. 6 is a schematic view of the structure of the lumbar support frame.

Fig. 7 is a schematic structural view of the lumbar support frame.

Fig. 8 is a schematic view of the structure of the movable inner sleeve.

Fig. 9 is a schematic structural view of the screw assembly.

Description of reference numerals: 1. the waist back support comprises a waist back support plate component 1-1, a waist back bottom shell 1-11, an upper and lower position adjusting slot hole 1-12, a positioning groove 1-2, a waist back support plate 1-21, a boss 2, a waist back support frame 2-1, an adjusting support seat 2-11, a fixing sleeve 2-12, a movable inner sleeve 2-13, a screw rod component 2-131, a screw rod 2-132, a knob 2-14, a linear guide mechanism 2-15, an end cover plate 2-16, a positioning marble 2-17, a connecting end 2-171, a positioning hole 2-172, a boss 2-2, a support foot rest 3 and a backrest.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, a definition of "a first" or "a second" feature may, clearly or implicitly, include one or more of the features, and in the description of the invention, "at least" means one or more than one unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature "above," "below," and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply an elevation where the first feature is at a higher level than the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following description will further describe embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages of the present invention will be more clear and definite. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.

As shown in fig. 1-9, the utility model relates to a waist rest of office chair backrest, which comprises a waist rest plate component 1 and a waist rest support frame 2 connected with the waist rest plate component 1, wherein the waist rest support frame comprises an adjusting support seat 2-1 connected with the waist rest plate component and a support foot frame 2-2 connected with the adjusting support seat, the support foot frame is connected with a backrest 3 of the office chair, the adjusting support seat 2-1 comprises a fixed sleeve 2-11, a movable inner sleeve 2-12 arranged in the fixed sleeve 2-11 and a screw rod component 2-13 in threaded connection with the movable inner sleeve, the end part of the movable inner sleeve is connected with the waist rest plate component, a linear guide mechanism 2-14 is arranged between the movable inner sleeve and the fixed sleeve, and the movable inner sleeve can be driven to move along the linear guide mechanism by rotating the screw rod component, thereby driving the waist rest plate component to move back and forth. The linear guide mechanisms 2-14 comprise at least two convex ribs arranged on the side surface of the movable inner sleeve, the number of the convex ribs is three in the embodiment, the convex ribs are parallel to the axis of the movable inner sleeve, guide grooves corresponding to the convex ribs are arranged in the fixed sleeve, and the movable inner sleeve is provided with inner threads which are in threaded connection with the screw rod assembly.

The lumbar support plate component 1 comprises a lumbar support bottom shell 1-1 and a lumbar support panel 1-2, wherein the lumbar support bottom shell is provided with an upper position adjusting groove hole 1-11 and a lower position adjusting groove hole 1-3 which is tightly attached to the upper position adjusting groove hole and the lower position adjusting groove hole is arranged in the lumbar support bottom shell, and a fastening piece is arranged on the locking plate and is connected and fixed with an adjusting supporting seat. The middle part of the waist support panel is provided with a boss 1-21 which is tightly attached to the ridge of the human body. The back of the waist rest bottom shell is provided with a plurality of air holes, and the number of the upper position adjusting slot holes and the lower position adjusting slot holes is two and the two slot holes are arranged in parallel. The two upper and lower position adjusting slotted holes are spaced, a plurality of positioning grooves 1-12 are sequentially arranged at the spacing position from top to bottom, end cover plates 2-15 are arranged at the end parts of the fixing sleeves, and positioning marbles 2-16 are embedded in the end cover plates. The end parts of the fixed sleeves 2-11 are movably provided with connecting end heads 2-17, the end parts of the movable inner sleeves are connected with the connecting end heads, and the connecting end heads are fixedly connected with the waist back plate assembly. In this embodiment, the connection end is provided with positioning holes 2-171 for holding the positioning balls to protrude outwards, and the positioning balls are movably matched with the positioning grooves in a jacking manner.

The locking plate is transversely arranged above the upper and lower position adjusting slotted holes on the two sides, and the fastening piece on the locking plate penetrates through the locking plate and the upper and lower position adjusting slotted holes to be connected and fixed with the connecting end. In the embodiment, the connecting end is cylindrical, the end face of the connecting end is provided with the bosses 2-172, and the fastening piece on the locking plate is fixedly connected with the bosses. The terminal surface of connecting the end sets up to the inclined plane, and the waist leans on the drain pan and the waist to lean on the panel bending to become the arc for the waist leans on subassembly and human waist to laminate more, and the inclined plane of connecting the end and the back laminating of drain pan are leaned on to the waist, when the relative upper and lower position control slotted hole of locking plate carries out the upper and lower regulation removal, will certainly change the inclination that the waist leaned on the subassembly, with the lumbar support demand that adapts to different people.

The screw rod assembly 2-13 comprises a screw rod 2-131 arranged in the movable inner sleeve and a knob 2-132 arranged at the rear part of the fixed sleeve, the knob is fixedly connected with the screw rod, and an anti-skid groove is arranged on the side surface of the knob to strengthen friction force; the screw rod is driven to rotate by rotating the knob, so that the movable inner sleeve is driven to move forwards or backwards relative to the fixed sleeve, and the lumbar support plate component can move forwards or backwards for adjustment.

Compared with the prior art, the utility model, waist leans on the upper and lower position of board subassembly, inclination and front and back position all adjustable, and simple to operate is adjusted to the whole, and the structure is also simple.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. A waist rest of an office chair backrest is characterized by comprising a waist rest plate component and a waist rest support frame connected with the waist rest plate component, wherein the waist rest support frame comprises an adjusting support seat connected with the waist rest plate component and a support foot frame connected with the adjusting support seat, the support foot frame is connected to a backrest of an office chair,

the adjusting support seat comprises a fixed sleeve, a movable inner sleeve arranged in the fixed sleeve and a screw rod assembly in threaded connection with the movable inner sleeve, the end portion of the movable inner sleeve is connected with the waist rest plate assembly, a linear guide mechanism is arranged between the movable inner sleeve and the fixed sleeve, and the movable inner sleeve is driven to move along the linear guide mechanism by rotating the screw rod assembly.

2. The lumbar support of an office chair back according to claim 1, wherein the lumbar support plate assembly comprises a lumbar support bottom shell and a lumbar support panel, the lumbar support bottom shell is provided with an up-down position adjusting slot, the lumbar support bottom shell is internally provided with a locking plate tightly attached to the up-down position adjusting slot, and the locking plate is provided with a fastener to be fixedly connected with the adjusting support seat.

3. The lumbar support of an office chair back rest according to claim 1, wherein the end of the fixed sleeve is movably provided with a connecting end, the end of the movable inner sleeve is connected with the connecting end, and the connecting end is fixedly connected with the lumbar support plate assembly.

4. The office chair back lumbar support according to claim 3, wherein the connecting end is cylindrical, a boss is arranged on the end surface of the connecting end, and the fastener on the locking plate is fixedly connected with the boss.

5. The waist rest of the office chair back as claimed in claim 3, wherein the end of the fixing sleeve is provided with an end cover plate, the end cover plate is embedded with a positioning marble, the connecting end is provided with a positioning hole for the positioning marble to protrude outwards, the back of the waist rest plate component is provided with a plurality of positioning grooves from top to bottom, and the positioning marble is movably matched with the positioning grooves in a jacking manner.

6. The lumbar support of an office chair back according to claim 1, wherein the screw assembly comprises a screw disposed in the movable inner sleeve and a knob disposed at the rear of the fixed sleeve, the knob being fixedly connected to the screw.

7. The waist rest of the office chair back as claimed in claim 1, wherein the supporting foot rest comprises a supporting plate frame connected with the fixing sleeve and a lifting guide support movably connected with the supporting plate frame, a convex block is arranged at the lower part of the supporting plate frame, and the lifting guide support is provided with a guide groove in sliding fit with the convex block.

8. The lumbar support of an office chair back as claimed in claim 1, wherein the linear guide mechanism comprises at least two ribs disposed on the side of the movable inner sleeve, the ribs being parallel to the axis of the movable inner sleeve, the stationary sleeve having guide grooves corresponding to the ribs, the movable inner sleeve having internal threads for threaded connection with the screw assembly.