Armrest and waist rest integrated office chair

Abstract

The utility model discloses an armrest and waist rest integrated office chair, which relates to the technical field of office chairs and comprises a chair body, the chair body comprises a chair back and supports, the supports are symmetrically arranged on two sides of the chair back, embedded concave positions are arranged on the lower portions of the two sides of the chair back, and the embedded concave positions are arranged on the chair back. At least part of the upper end of the support is embedded in the embedded sunken position, a plurality of first circumferential limiting parts are arranged on the embedded sunken position, second circumferential limiting parts which are in one-to-one sleeving connection with the first circumferential limiting parts are arranged on the side, close to the chair back, of the upper end of the support, and the second circumferential limiting parts are arranged on the side, close to the chair back, of the upper end of the support in the width direction of the chair back. The chair back and the support are connected and fixed through a plurality of fastening parts, at least one fastening part extends into the threaded hole in the other second circumferential limiting part from one first circumferential limiting part, and the fastening parts are in threaded connection with the threaded holes; and the more efficient, quicker and more accurate mounting effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair technical field especially relates to a handrail waist back integrated office chair. BACKGROUND

[0002] Office chair, is equipped for the chair of work convenience, promotes work efficiency, office chair is narrow to the back chair of sitting posture work, broad sense includes staff chair, visitor chair and training chair etc.

[0003] The prior art office chair needs to connect the chair back and the seat through the support when producing, but the design between the chair back and the support is unreasonable, which leads to slow installation efficiency of the support and the chair back, and the chair back and the support are easy to deflect after installation, so that the chair back and the support cannot be fixed accurately and quickly. UTILITY MODEL CONTENTS

[0004] The utility model provides a handrail waist back integrated office chair, solve the technical problem of slow installation efficiency of the chair back and the support in current office chair.

[0005] In order to solve the above technical problem, the utility model provides a handrail waist back integrated office chair, which comprises a chair body, and the chair body comprises a chair back and a support, the support is symmetrically arranged on both sides of the chair back, an embedded recessed position is arranged at the lower part of both sides of the chair back, at least part of the upper end of the support is embedded in the embedded recessed position, a plurality of first circumferential limiting parts are arranged on the embedded recessed position, a second circumferential limiting part is arranged on one side of the upper end of the support close to the chair back, and the chair back and the support are connected and fixed through a plurality of fastening parts in the width direction of the chair back, at least one fastening part is arranged in the threaded hole of one of the first circumferential limiting parts and the second circumferential limiting part, and the fastening part and the threaded hole are screw connected.

[0006] Preferably, the first circumferential limiting part arranged on the embedded recessed position is inserted into the second circumferential limiting part.

[0007] The above technical scheme is adopted: the first circumferential limiting part arranged on the embedded recessed position is inserted into the second circumferential limiting part, the chair back and the support are clamped, and the first circumferential limiting part inserted into the second circumferential limiting part can prevent the chair back and the support from deflecting after installation, so that the fastening part can be fixed quickly and accurately.

[0008] Preferably, the first circumferential limiting part has two and extends to the side of the support, the first circumferential limiting part is in polygonal configuration, and the second circumferential limiting part has two and extends to the side of the embedded recess, the second circumferential limiting part is in polygonal configuration, and the first circumferential limiting part is inserted into the second circumferential limiting part to achieve circumferential locking.

[0009] The above technical scheme is adopted: the first circumferential limiting part has two and extends to the side of the support, the first circumferential limiting part is in polygonal configuration, and the second circumferential limiting part has two and extends to the side of the embedded recess, the second circumferential limiting part is in polygonal configuration, and the first circumferential limiting part is inserted into the second circumferential limiting part to achieve circumferential locking, and the polygonal configuration can be triangular configuration, square configuration, hexagonal configuration, etc., and the square configuration is adopted in the application.

[0010] Preferably, the second circumferential limiting part is in tubular polygonal configuration, a central part with the threaded hole is arranged in the inside of one of the second circumferential limiting parts, and a plurality of first reinforcing ribs are arranged between the central part and the inner wall of the second circumferential limiting part.

[0011] The above technical scheme is adopted: the second circumferential limiting part is in tubular polygonal configuration, and the polygonal configuration can be triangular configuration, square configuration, hexagonal configuration, etc., and the square tubular configuration is adopted in the application, a central part with the threaded hole is arranged in the inside of one of the second circumferential limiting parts, and a plurality of first reinforcing ribs are arranged between the central part and the inner wall of the second circumferential limiting part, so that the central part with the threaded hole and the second circumferential limiting part are connected firmly, that is, the fastener and the central part with the threaded hole are more tightly threadedly connected.

[0012] Preferably, the end surface of the central part close to the chair back is lower than the end surface of the second circumferential limiting part close to the chair back.

[0013] The above technical scheme is adopted: the end surface of the central part close to the chair back is lower than the end surface of the second circumferential limiting part close to the chair back, so that the first circumferential limiting part can be inserted into the second circumferential limiting part with the central part.

[0014] Preferably, one of the first circumferential limiting parts is in tubular polygonal configuration, and the other first circumferential limiting part is in block polygonal configuration and is provided with a through-type avoiding nail hole in the thickness direction.

[0015] The above technical scheme is adopted: one of the first circumferential limiting parts is in tubular polygonal configuration, and the other first circumferential limiting part is in block polygonal configuration and is provided with a through-type avoiding nail hole in the thickness direction, so that the avoiding nail hole can facilitate the fastening part to pass through.

[0016] Preferably, a screw joint part with a thread connection with the corresponding fastening part is arranged on the support.

[0017] The above technical scheme has the following advantages: the screw joint part with a thread connection with the corresponding fastening part is arranged on the support, thereby fixing the support and the chair back.

[0018] Preferably, a second reinforcing rib is arranged in the embedded recess, and at least part of the second reinforcing rib is connected with the first circumferential limiting part.

[0019] The above technical scheme has the following advantages: the second reinforcing rib is arranged in the embedded recess, and at least part of the second reinforcing rib is connected with the first circumferential limiting part, thereby improving the strength of the embedded recess and the connection strength between the first circumferential limiting part and the embedded recess.

[0020] Preferably, the two first circumferential limiting parts are arranged in an upper-lower distribution, the two second circumferential limiting parts are arranged in an upper-lower distribution, and the two fastening parts and one of the first circumferential limiting parts are arranged in a triangular distribution.

[0021] The above technical scheme has the following advantages: the two first circumferential limiting parts are arranged in an upper-lower distribution, the two second circumferential limiting parts are arranged in an upper-lower distribution, and the two fastening parts and one of the first circumferential limiting parts are arranged in a triangular distribution, thereby making the chair back and the support more stable after installation and making the design more reasonable.

[0022] Preferably, the depth of the upper second circumferential limiting part is smaller than the depth of the lower second circumferential limiting part, and the insertion depth of the first circumferential limiting part inserted into the upper second circumferential limiting part is smaller than the insertion depth of the first circumferential limiting part inserted into the lower second circumferential limiting part.

[0023] The above technical scheme has the following advantages: the depth of the upper second circumferential limiting part is smaller than the depth of the lower second circumferential limiting part, and the insertion depth of the first circumferential limiting part inserted into the upper second circumferential limiting part is smaller than the insertion depth of the first circumferential limiting part inserted into the lower second circumferential limiting part, thereby facilitating the insertion of the first circumferential limiting part into the second circumferential limiting part, limiting the chair back and the support, preventing the chair back and the support from deflecting after installation, and facilitating the fastening of the chair back and the support by the fastening part.

[0024] Compared with the related art, the present application has the following advantages:

[0025] 1. Compared with the traditional office chair, the utility model discloses a recess position, first circumferential limiting portion, second circumferential limiting portion, the lower position of both sides of the chair back is equipped with the recess position, at least part of the upper end of the support is embedded in the recess position, a plurality of first circumferential limiting portions are equipped on the recess position, and the side of the upper end of the support close to the chair back is equipped with the second circumferential limiting portion that is matched with the first circumferential limiting portion, and in the width direction of the chair back, the chair back and the support are connected and fixed through a plurality of fastening components, at least one fastening component is inserted into the threaded hole in the other second circumferential limiting portion from one first circumferential limiting portion, and the fastening component and the threaded hole are screwed, which has the advantage that when the support and the chair back are installed, the upper end of the support is embedded and installed in the recess position, at the same time, the first circumferential limiting portion is inserted in the second circumferential limiting portion, realizing the preliminary stability and the quickness of the installation after the support and the chair back are installed, and then the fastening component is inserted into the threaded hole in the other second circumferential limiting portion through one first circumferential limiting portion and is screwed, realizing the installation effect of more efficient, more convenient, more accurate and more precise. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic diagram of a handrail waist support integrated office chair;

[0027] Figure 2 It is a front and back split structure schematic diagram of a support and a chair back in a handrail waist support integrated office chair;

[0028] Figure 3 It is a front and back split structure schematic diagram of a support and a chair back in a handrail waist support integrated office chair;

[0029] Figure 4 It is an enlarged view of A in a handrail waist support integrated office chair;

[0030] Figure 5 It is an enlarged view of B in a handrail waist support integrated office chair;

[0031] Figure 6 It is an enlarged view of C in a handrail waist support integrated office chair.

[0032] Reference numerals in the drawing: 1, chair back;10, recess position;11, second reinforcing rib;2, support;3, first circumferential limiting portion;31, avoiding pin hole;4, second circumferential limiting portion;5, fastening component;6, threaded hole;7, center portion;8, first reinforcing rib;9, screwing portion. DETAILED DESCRIPTION

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] like Figures 1-6 As shown, an office chair with integrated armrest and lumbar support includes a chair body, and the chair body includes a backrest 1 and a support 2. The support 2 is symmetrically arranged on both sides of the backrest 1. There are recessed positions 10 at the lower part of both sides of the backrest 1. At least part of the upper end of the support 2 is embedded in the recessed position 10. There are a plurality of first circumferential limiting parts 3 on the recessed position 10. There are second circumferential limiting parts 4 on the side of the upper end of the support 2 near the backrest 1, which are connected to the first circumferential limiting parts 3. In the width direction of the backrest 1, the backrest 1 and the support 2 are connected and fixed by a plurality of fastening parts 5. At least one fastening part 5 extends from one of the first circumferential limiting parts 3 and into a threaded hole 6 in another second circumferential limiting part 4. The fastening part 5 and the threaded hole 6 are threadedly connected.

[0036] When installing the support 2 and the chair back 1, the upper end of the support 2 is first embedded in the recessed position 10. At the same time, the first circumferential limiting part 3 is inserted into the second circumferential limiting part 4 to achieve the initial stability and quick installation of the support 2 and the chair back 1. Then, the fastening part passes through one of the first circumferential limiting parts 3 and is threaded into the threaded hole 6 in the other second circumferential limiting part 4 to achieve a more efficient, faster, more convenient and more precise installation effect.

[0037] Example 2

[0038] like Figures 2-4 As shown, the first circumferential limiting part 3, which is provided on the embedded recess 10, is inserted into the second circumferential limiting part 4 to lock the backrest 1 and the support 2. The insertion of the first circumferential limiting part 3 into the second circumferential limiting part 4 can prevent the backrest 1 and the support 2 from deflecting after installation, and facilitate quick and accurate fixation with the fastening part 5.

[0039] like Figure 4As shown, the first circumferential limiting part 3 has two and extends to the side of the support 2, the first circumferential limiting part 3 is a polygonal structure, and the second circumferential limiting part 4 has two and extends to the side of the embedded recess position 10, the second circumferential limiting part 4 is a polygonal structure, the first circumferential limiting part 3 is inserted into the second circumferential limiting part 4 to achieve circumferential locking, and the polygonal structure can be a triangular structure, a square structure, a hexagonal structure, etc. The square structure is adopted in the application;

[0040] As shown in the figure, Figure 4 The second circumferential limiting part 4 is a cylindrical polygonal structure, and for the same reason, the polygonal structure can be a triangular structure, a square structure, a hexagonal structure, etc. The square cylindrical structure is adopted in the application. A center part 7 with a threaded hole 6 is arranged in the interior of one of the second circumferential limiting parts 4, and a plurality of first reinforcing ribs 8 are arranged between the center part 7 and the inner wall of the second circumferential limiting part 4, so that the connection between the center part 7 with the threaded hole 6 and the second circumferential limiting part 4 is firm, that is, the fastener and the center part 7 with the threaded hole 6 can be more tightly threadedly connected;

[0041] As shown in the figure, Figure 4 , Figure 6 The end surface of the center part 7 close to the chair back 1 is lower than the end surface of the second circumferential limiting part 4 close to the chair back 1, so that the first circumferential limiting part 3 can be inserted into the second circumferential limiting part 4 with the center part 7;

[0042] As shown in the figure, Figure 5 One of the first circumferential limiting parts 3 is a cylindrical polygonal structure, and the other first circumferential limiting part 3 has a through-type avoiding nail hole 31 in the thickness direction and is a block-shaped polygonal structure. The avoiding nail hole 31 can facilitate the fastening component 5 to pass through;

[0043] As shown in the figure, Figure 6 A screw connection part 9 with a corresponding threaded connection with the fastening component 5 is further arranged on the support 2 to realize the fixation between the support 2 and the chair back 1;

[0044] As shown in the figure, Figure 5 A second reinforcing rib 11 is arranged in the embedded recess position 10, and at least part of the second reinforcing rib 11 is connected with the first circumferential limiting part 3 to improve the strength of the part of the embedded recess position 10 and the connection strength between the first circumferential limiting part 3 and the embedded recess position 10;

[0045] As shown in the figure, Figure 4 The two first circumferential limiting parts 3 are distributed one above the other, and the two second circumferential limiting parts 4 are distributed one above the other, and the two fastening components 5 and one of the first circumferential limiting parts 3 are triangularly distributed, so that the chair back 1 and the support 2 are more stable after installation, and the design is more reasonable;

[0046] As Figures 4-6 shown, the depth of the second circumferential limiting part 4 in the upper position is less than that in the lower position, and the insertion depth of the first circumferential limiting part 3 inserted into the upper second circumferential limiting part 4 is less than that of the first circumferential limiting part 3 inserted into the lower second circumferential limiting part 4, which facilitates the insertion of the first circumferential limiting part 3 into the second circumferential limiting part 4, limits the chair back 1 and the support 2, prevents the deflection between the chair back 1 and the support 2 after installation, and is beneficial to the fastening of the chair back 1 and the support 2 by the fastening part 5.

[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An armrest and lumbar support integrated office chair, comprising a chair body, and the chair body comprises a chair back (1) and a support (2), the support (2) is symmetrically arranged on both sides of the chair back (1), characterized in that, At lower positions of two sides of the chair back (1), embedded recesses (10) are arranged, at least part of upper ends of the supports (2) are embedded in the embedded recesses (10), a plurality of first circumferential limiting portions (3) are arranged on the embedded recesses (10), and second circumferential limiting portions (4) which are sleeved with the first circumferential limiting portions (3) one by one are arranged on the upper ends of the supports (2) close to one side of the chair back (1), and in the width direction of the chair back (1), the chair back (1) and the supports (2) are connected and fixed by a plurality of fastening components (5), at least one of the fastening components (5) is arranged in a threaded hole (6) which extends from one of the first circumferential limiting portions (3) into the other one of the second circumferential limiting portions (4), and the fastening component (5) and the threaded hole (6) are threadedly connected.

2. The armrest lumbar integrated office chair of claim 1, wherein, The first circumferential limiting portions (3) arranged on the embedded recesses (10) are inserted into the second circumferential limiting portions (4) one by one.

3. The armrest lumbar integrated office chair of claim 2, wherein, The first circumferential limiting portions (3) are two and extend to the side of the support (2), the first circumferential limiting portions (3) are polygonal in structure, the second circumferential limiting portions (4) are two and extend to the side of the embedded recess (10), the second circumferential limiting portions (4) are polygonal in structure, and the first circumferential limiting portions (3) are inserted into the second circumferential limiting portions (4) to achieve circumferential locking.

4. The armrest lumbar integrated office chair of claim 3, wherein, The second circumferential limiting portions (4) are all cylindrical polygonal structures, a central portion (7) having the threaded hole (6) is arranged in the interior of one of the second circumferential limiting portions (4), and a plurality of first reinforcing ribs (8) are arranged between the central portion (7) and the inner wall of the second circumferential limiting portion (4).

5. The armrest lumbar integrated office chair of claim 4, wherein, An end surface of the central portion (7) close to the chair back (1) is lower than an end surface of the second circumferential limiting portion (4) close to the chair back (1).

6. The armrest lumbar integrated office chair of claim 3, wherein, One of the first circumferential limiting portions (3) is a cylindrical polygonal structure, the other one of the first circumferential limiting portions (3) is a block polygonal structure and has a through-type avoiding pin hole (31) in the thickness direction.

7. The armrest lumbar integrated office chair of claim 1, wherein, A threaded portion (9) which is threadedly connected with the corresponding fastening component (5) is further arranged on the support (2).

8. The armrest lumbar integrated office chair of claim 1, wherein, A second reinforcing rib (11) is arranged in the embedded recess (10), and at least part of the second reinforcing rib (11) is connected with the first circumferential limiting portion (3).

9. The armrest lumbar integrated office chair of claim 3, wherein, The two first circumferential limiting portions (3) are arranged in an upper-lower distribution, the two second circumferential limiting portions (4) are arranged in an upper-lower distribution, and the two fastening components (5) and one of the first circumferential limiting portions (3) are arranged in a triangular distribution.

10. The armrest lumbar integrated office chair of claim 9, wherein, The depth of the upper second circumferential limiting portion (4) is less than the depth of the lower second circumferential limiting portion (4), and the insertion depth of the first circumferential limiting portion (3) inserted into the upper second circumferential limiting portion (4) is less than the insertion depth of the first circumferential limiting portion (3) inserted into the lower second circumferential limiting portion (4).

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