CN219920654U - Office chair with adjustable waist support - Google Patents

Abstract

The utility model provides an office chair with an adjustable waist support, which comprises an office chair body and a waist support assembly, wherein the office chair body comprises a backrest and upright rods respectively arranged on two sides of the backrest; the waist support assembly comprises a waist pad unit and an installation base piece arranged on the back side of the waist pad unit, wherein the installation base piece comprises an installation bottom plate connected with the waist pad unit and connecting pieces arranged on two sides of the installation bottom plate, and the connecting pieces comprise extension parts and connection clamping heads which are arranged at the end parts of the extension parts and can be movably connected with the vertical rods. The height of the waist support assembly can be adjusted by changing the connecting position on the upright rod, so that the use comfort is improved, and the waist support assembly and the office chair body can be quickly assembled and disassembled, so that different use requirements can be met, and the assembly can be conveniently stored and transported.

Description

Office chair with adjustable waist support

Technical Field

The utility model relates to the technical field of seats, in particular to an office chair with an adjustable waist support.

Background

Office chairs are indispensable office supplies in many workplaces, and comfort of office chairs is also an important index for office furniture selection. Because office staff needs to keep sitting posture for a long time under many conditions, and the long-term keeping of sitting posture can lead to the waist of human body to produce the strain, influences healthy and office efficiency, therefore many office chairs on the market have all been configured with waist and have held in the palm the structure, and waist holds in the palm the structure and can produce the support to user's waist back position to improve the use comfort.

However, the waist support of the existing office chair is usually arranged at a certain fixed height position of the office chair, a means for flexibly adjusting the height is lacked for users with different physique and different sitting postures, certain defects still exist during use, the mounting structure of the waist support is improved in some technical schemes, the waist support can move at the height so as to meet the demands of different groups, for example, patent document with the application number of CN202022913364.2 discloses a waist support of the office chair with self-adaption height, which comprises a waist support body arranged at one side of a chair back, a support plate is arranged in a cloth wrapping layer of the chair back, nuts fixedly connected with the support plate, screws in threaded connection with the nuts are arranged at two sides of the support plate, a chain wheel I and a chain wheel II fixedly connected with the screws at two sides respectively, a chain I and a chain wheel II meshed with the chain wheel II are simultaneously arranged on the chair back, a driving assembly for driving the waist support body to move up and down is arranged on the chair back, and a connecting assembly is arranged between the support plate and the waist support body. This technical scheme adopts screw rod and nut to make the waist support body can realize adjusting from top to bottom, through the activity that the handle drive waist supported during the use, can adjust the waist according to user's demand and support the height of body, improves the comfort level of office chair. The driving mechanism of the waist support is required to be arranged in the chair back, and an opening is formed on the chair back to connect the waist support body, so that the office chair is relatively complex and heavy in structure and relatively troublesome in shipment, the waist support and the office chair cannot be separated and detached, the office chair cannot be switched between two modes without the waist support and with the waist support, and the application range of the office chair is affected to a certain extent.

Disclosure of Invention

In order to solve the above problems, the present utility model provides an office chair with an adjustable lumbar support, which can adjust the lumbar support height, is convenient to use, and can also enable the lumbar support assembly to be detached from the office chair body, thereby changing the structure and function of the office chair.

An office chair with an adjustable waist support comprises an office chair body and a waist support assembly, wherein the office chair body comprises a backrest and upright rods respectively arranged on two sides of the backrest; the waist support assembly comprises a waist pad unit and an installation base piece arranged on the back side of the waist pad unit, wherein the installation base piece comprises an installation bottom plate connected with the waist pad unit and connecting pieces arranged on two sides of the installation bottom plate, and the connecting pieces comprise extension parts and connection clamping heads which are arranged at the end parts of the extension parts and can be movably connected with the vertical rods.

The utility model is provided with an office chair body and a waist support component which are relatively independent, when the office chair is used, the waist support component and the office chair body are assembled, in particular, two sides of a backrest of the office chair body are respectively provided with a vertical rod, the waist support component comprises a waist pad unit and a mounting base member used for arranging the waist pad unit, the mounting base member comprises a quantity reference arranged at two sides of a mounting bottom plate, the connecting member can be clamped with the vertical rods through a connecting clamping head, when the connecting members at two sides of the mounting bottom plate are respectively connected with the vertical rods at two sides of the backrest, the waist support component can be assembled, when the waist support component is assembled, the connecting member can be clamped at different height positions of the vertical rods according to the needs of a user, in addition, the waist support component and the office chair body are detachably connected, the structure and the function of the office chair can be changed under different scenes or different needs of the user, most of the assembly type chairs can be split into a plurality of parts in the transportation process, when the assembly type chairs are used, the waist support component can be assembled, the waist support component can be stored and the chair back support can be detached, and the storage space utilization rate of the office chair can be reduced when the waist support component is arranged, and the storage cost of the office chair can be lowered.

Further, the connecting chuck comprises a clamping groove part which can be matched with the vertical rod and a bayonet part for the vertical rod to enter the clamping groove part.

Further, the connecting clamp head is composed of two clamp units, the clamp units comprise connecting ends movably connected with the extending parts and free ends forming the clamp parts, and the free ends of the two clamp units can be mutually close to or far away from each other so that the width of the clamp parts is reduced or increased.

Further, the connecting chuck further comprises a reset spring connected with the two clamping piece units.

Further, a limiting convex tooth is formed on the inner groove surface of the clamping groove part, and a plurality of limiting clamping grooves corresponding to the limiting convex tooth in shape are formed on the vertical rod. Through the cooperation of spacing dogtooth and spacing draw-in groove, can make the connection dop form certain locking effect in the axial direction of pole setting, improve the installation stability of waist support subassembly.

Further, the plurality of limit clamping grooves are equidistantly arranged in the length direction of the vertical rod.

Further, the bayonet portion gradually decreases in width in a direction toward the card slot portion. Through the structure, the clamping part can play a role in guiding the vertical rod, so that the vertical rod is easier to clamp into the clamping groove part.

Further, the backrest comprises a framework and a coating body arranged outside the framework, and the upright rod is connected with the framework.

Further, the waist support assembly comprises two waist pad units which are symmetrically arranged, and a bearing curved surface is formed on the front side of each waist pad unit.

Further, a rotating shaft connecting part is formed at the part of the mounting bottom plate close to the side edge, and a spring connecting part is formed at the part close to the middle part; the waist pad unit is connected with the mounting bottom plate through the rotating shaft connecting part and the spring connecting part.

In summary, the following beneficial effects can be obtained by applying the scheme of the utility model:

1. the waist support assembly and the office chair body can be quickly disassembled and assembled, so that the structure and the function of the office chair can be converted between two modes, and the use requirements of more scenes and users can be met.

2. The waist support assembly provided by the utility model can be detachably connected with the upright posts on the office chair body, the height of the waist support assembly can be adjusted by changing the connection positions on the upright posts, the requirements of users in different sitting postures are met, and the mounting stability of the waist support assembly can be further improved by arranging the limiting convex teeth and the limiting clamping grooves.

3. The waist support component provided by the utility model can be detached from the office chair body and stored independently, and can improve the space utilization rate and facilitate the storage and transportation of the component when applied to some assembled office chairs.

Drawings

Fig. 1 is a schematic view of the overall structure of an office chair with an adjustable lumbar support according to an embodiment;

FIG. 2 is a top view of the backrest and lumbar support assembly of FIG. 1;

FIG. 3 is a schematic view of a clamping structure of the connecting chuck and the upright in FIG. 2;

FIG. 4 is a schematic view of another embodiment of a chuck and rod assembly connection;

fig. 5 is a schematic view of a waist support assembly according to another embodiment;

in the figure, the office chair comprises a 1-office chair body, a 11-backrest, a 12-upright rod, a 121-limiting clamping groove, a 2-waist support assembly, a 21-waist pad unit, a 22-mounting bottom plate, a 221-rotating shaft connecting part, a 222-spring connecting part, a 23-connecting part, a 231-extending part, a 232-connecting clamping head, a 2321-clamping groove, a 2322-clamping part, 2323-limiting convex teeth and a 2324-limiting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

As shown in fig. 1, the present embodiment provides an office chair with an adjustable lumbar support, which comprises an office chair body 1 and a lumbar support assembly 2 detachably mounted on the office chair body 1, wherein the office chair body generally comprises a cushion member, a support member for forming the cushion member into an overhead and a backrest 11, and fig. 1 shows a schematic view of one of the office chair body, and in some other embodiments, the support member, the cushion member and the backrest member may have other shapes and structures, for example, in some other embodiments, the support member may be a leg for forming a fixed support with the ground to form the overhead of the cushion member. In this embodiment, two sides of the backrest 11 are respectively provided with a vertical rod 12, specifically, the backrest includes a framework structure disposed inside and a decorative layer coated outside the framework structure, and the upper and lower ends of the vertical rods are connected with the framework structure inside the backrest from the side edges of the backrest. The waist holds in palm subassembly 2 including being used for forming the waist pad unit 21 of supporting effect and setting up in the waist pad unit dorsal is used for making the waist holds in the palm the subassembly and forms the installation base member of equipment with the office chair body, the installation base member including be used for fixing the mounting plate 22 of waist pad unit with set up in the connecting piece 23 of mounting plate both sides, the connecting piece includes extension 231 and sets up the connection dop 232 in extension one end, the one end and the mounting plate of extension are connected, and the other end extends to the pole setting place position, and makes the connection dop can form joint cooperation with the pole setting. Specifically, in this embodiment, two connectors are disposed on each side of the mounting base plate, so as to improve stability after the connectors are engaged with the upright rods, in other embodiments, the connectors may be one or more, only one connector is generally disposed, which may cause the mounting structure to be unstable and shake up and down easily, and too many connectors are disposed, which has high requirements on dimensional accuracy between the connectors, or otherwise, the connectors cannot form engagement with the upright rods at the same time, so that two connectors may be preferably disposed.

Fig. 2 is a schematic top view of the backrest and lumbar support assembly in the structure shown in fig. 1, in which the extension portion includes a first portion extending along the surface of the backrest and a second portion forming a corner and extending toward the position where the upright rod is located.

Fig. 3 further shows a connection structure between the connection chuck and the upright in fig. 1, where two jaw units are disposed at the end of the extension portion, the two jaw units are combined to form the connection chuck, the two jaw units and the extension portion form a coaxial rotating shaft connection structure, and a return spring is disposed in the rotating shaft connection structure, where the free ends of the two jaw units can form a trend of approaching each other, and when the free ends of the two jaw units are far away from each other, a reverse restoring force is provided, and typically, the return spring is disposed in a structure of a torsion spring, and two jaw units are connected to two ends of the torsion spring respectively, so as to achieve the above effect. The connecting chuck is provided with a clamping groove 2321 which can be matched with the vertical rod 12 and a bayonet part 2322 for the vertical rod to enter the clamping groove, and the bayonet part forms a necking guide structure with gradually reduced opening width in the direction towards the clamping groove so that the vertical rod enters the clamping groove.

Fig. 4 is a view based on another embodiment of fig. 3, in fig. 4, a limiting convex tooth 2323 is disposed on an inner groove surface of the clamping groove, and a plurality of limiting clamping grooves 121 are formed on an outer side wall of the upright 12, when the upright is matched with the clamping groove, the limiting convex tooth and the limiting clamping groove form a further matched structure so as to form a locking effect, and the connecting clamping head is prevented from axially sliding along the upright. In addition, still be provided with the stopper in the position that extension and jack catch unit are connected, the stopper is used for restricting the rotation angle of jack catch unit, avoids connecting the dop and takes place to damage.

Fig. 5 shows another embodiment based on fig. 2, in which the lumbar pad unit may be provided in two symmetrical fashion, and the lumbar pad unit is connected to the mounting base plate 22 by means of a pivot connection 221 and a spring connection 222, so that the lumbar pad unit can be moved.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. The utility model provides an adjustable waist holds in palm office chair, includes office chair body and waist support subassembly, its characterized in that: the office chair body comprises a backrest and upright rods respectively arranged at two sides of the backrest; the waist support assembly comprises a waist pad unit and an installation base piece arranged on the back side of the waist pad unit, wherein the installation base piece comprises an installation bottom plate connected with the waist pad unit and connecting pieces arranged on two sides of the installation bottom plate, and the connecting pieces comprise extension parts and connection clamping heads which are arranged at the end parts of the extension parts and can be movably connected with the vertical rods.

2. An office chair with adjustable lumbar support according to claim 1, wherein: the connecting clamping head comprises a clamping groove part which can be matched with the vertical rod and a bayonet part for the vertical rod to enter the clamping groove part.

3. An office chair with adjustable lumbar support according to claim 2, wherein: the connecting clamp head consists of two clamp piece units, wherein the clamp piece units comprise connecting ends movably connected with the extending parts and free ends forming the clamp opening parts, and the free ends of the two clamp piece units can be mutually close to or far away from each other so as to reduce or increase the width of the clamp opening parts.

4. An office chair with adjustable lumbar support according to claim 3, wherein: the connecting clamping head further comprises a reset spring connected with the two clamping piece units.

5. An office chair with adjustable lumbar support according to claim 2, wherein: limiting convex teeth are formed on the inner groove surface of the clamping groove part, and a plurality of limiting clamping grooves corresponding to the limiting convex teeth in shape are formed on the vertical rod.

6. An adjustable lumbar support office chair according to claim 5, wherein: the limiting clamping grooves are equidistantly arranged in the length direction of the vertical rod.

7. An office chair with adjustable lumbar support according to claim 2, wherein: the bayonet portion gradually decreases in width in a direction toward the card slot portion.

8. An office chair with adjustable lumbar support according to claim 3, wherein: the backrest comprises a framework and a coating body arranged outside the framework, and the upright rod is connected with the framework.

9. An office chair with adjustable lumbar support according to claim 1, wherein: the waist support assembly comprises two waist pad units which are symmetrically arranged, and a bearing curved surface is formed on the front side of each waist pad unit.

10. An adjustable lumbar support office chair according to claim 9, wherein: a rotating shaft connecting part is formed at the part of the mounting bottom plate close to the side edge, and a spring connecting part is formed at the part close to the middle part; the waist pad unit is connected with the mounting bottom plate through the rotating shaft connecting part and the spring connecting part.