Metal chair frame

Abstract

The utility model relates to the technical field of furniture supplies, in particular to a metal chair frame which comprises a backrest support, armrest supports, a cushion support and supporting legs, and the interiors of the backrest support, the armrest supports, the cushion support and the supporting legs are all of hollow structures. The backrest support and the supporting legs are integrally formed through welding, a plurality of acid flowing holes used for discharging acid water are formed in the bottom of the armrest support and the bottom of the cushion support, the acid flowing holes are formed in an up-down staggered and spaced mode, and each acid flowing hole is provided with a plugging cover. A drainage hole is also formed in one side of each supporting leg and is communicated with the acid flowing hole; according to the utility model, the acid flowing holes are formed in the chair frame at equal intervals in a staggered manner, so that a pickling solution in the pickled chair frame can be quickly discharged, and the residual pickling solution is prevented from corroding the metal chair frame; and meanwhile, drainage holes are formed to communicate all parts in the chair frame, so that the discharge of the residual pickling solution is further accelerated, and the service life of the metal chair frame is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture products, in particular to a metal chair frame. Background Art

[0002] With the development of society, chairs are a kind of daily furniture, a kind of seat with a backrest and armrests. Modern chairs pursue beauty and fashion. Some chairs are no longer just seats, but are endowed with more technology to make it more convenient for humans. In order to make the service life of the chair longer, the frame structure of most chairs is now made of metal. The metal chair frame is relatively strong and not easy to deform.

[0003] In the production process of chair frames, steel pipes are usually used as the raw materials for the frames. Protective oil is added to the steel pipes during the manufacturing, storage and transportation process. In the process of producing products, the surface of the steel pipes is inevitably stained with various dirt, such as lubricating oil, metal oxide layer, sweat stains caused by contact with people, and dust from welding. The presence of these dirt is very unfavorable to the subsequent coating process of the chairs, and will eventually affect the inherent comprehensive quality of the coating. Therefore, in order to clean the various dirt on the steel pipes and enhance the protective ability of the metal matrix itself, the chair frame needs to be pickled.

[0004] After the existing metal chair frame is welded, it needs to be pickled. During the pickling immersion process, the pickling liquid will flow into the metal chair frame from the weld. When the metal chair frame is hoisted to discharge the acid water, the pickling liquid is not easy to be discharged from the metal chair frame due to the small weld. As a result, the pickling liquid is easily retained in the metal chair frame, which not only seriously slows down the production efficiency of the metal chair frame, but also causes corrosion to the metal chair frame, thereby affecting the service life of the chair. Utility Model Content

[0005] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the utility model is to provide a metal chair frame. By setting acid flow holes and drainage holes, the pickling liquid in the chair frame after pickling can be quickly discharged, thereby avoiding the residual pickling liquid from corroding the metal chair frame, thereby improving the service life of the metal chair frame.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A metal chair frame comprises a backrest bracket, an armrest bracket, a seat cushion bracket and a supporting leg, wherein the interiors of the backrest bracket, the armrest bracket, the seat cushion bracket and the supporting leg are all hollow structures; the bottoms of the armrest bracket and the seat cushion bracket are provided with a plurality of acid flow holes for discharging acid water, the plurality of acid flow holes are arranged in an up-and-down staggered manner, and a sealing cover is installed on each acid flow hole; a drainage hole is also provided on the side of the supporting leg connected to the seat cushion bracket, and the drainage hole is communicated with the acid flow hole.

[0008] Preferably, the top end of the backrest bracket is also connected to a crossbeam, and both ends of the crossbeam are fixedly connected to the backrest bracket by screws.

[0009] Preferably, the seat cushion bracket includes a cross bar laterally arranged corresponding to the position of the supporting legs and a vertical bar connected between the cross bars, a plurality of threaded holes with internal threads are opened at both ends of the cross bar, and the cross bar is fixed to the supporting leg by screws passing through the threaded holes on one side of the supporting leg, and both ends of the vertical bar are connected to the cross bar.

[0010] Preferably, the armrest bracket is configured as an arc-shaped structure, and one end of the armrest bracket is provided with a rivet to be fixedly connected to the backrest bracket, and the other end is connected to the support leg located at the front side.

[0011] Preferably, the supporting legs are arranged in four numbers, wherein the supporting leg at the front side is fixedly connected to the armrest bracket, and the supporting leg at the rear side is fixedly connected to the welding bracket by welding, and the welded supporting leg and the backrest bracket are interconnected to form an integrated structure.

[0012] Preferably, a water leakage hole is also provided at the bottom of the supporting leg, and the water leakage hole is communicated with the inner cavity of the supporting leg.

[0013] Preferably, the inner and outer surfaces of the backrest bracket, the armrest bracket, the seat cushion bracket and the supporting legs are all sprayed with a paint layer.

[0014] In summary, the beneficial effects of the utility model are:

[0015] The utility model provides acid flow holes at equal intervals and at different positions on the chair frame, so that the pickling liquid in the chair frame after pickling can be quickly discharged, thereby preventing the residual pickling liquid from corroding the metal chair frame. At the same time, drainage holes are provided to connect various parts in the chair frame, so that the residual pickling liquid in the chair frame can be further discharged faster, thereby improving the service life of the metal chair frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the metal chair frame of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the metal chair frame of the utility model from another side perspective;

[0018] Figure 3 It is a cross-sectional view of the metal chair frame of the utility model;

[0019] Figure 4 yes Figure 3 A magnified view of the structure at a.

[0020] Description of reference numerals in the figures:

[0021] 1. Backrest bracket; 11. Crossbeam; 2. Armrest bracket; 3. Cushion bracket; 31. Crossbar; 311. Threaded hole; 32. Vertical bar; 4. Support leg; 41. Leakage hole; 5. Acid flow hole; 6. Sealing cover; 7. Drainage hole; 8. Screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0024] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] The following is combined with Figure 1-4 , an embodiment of a metal chair frame of the utility model is further described in detail.

[0026] A metal chair frame, such as Figure 1 , 2As shown, it includes a backrest bracket 1, an armrest bracket 2, a cushion bracket 3 and a supporting leg 4, and the interiors of the backrest bracket 1, the armrest bracket 2, the cushion bracket 3 and the supporting leg 4 are all hollow structures; the bottoms of the armrest bracket 2 and the cushion bracket 3 are each provided with a plurality of acid flow holes 5 for discharging acid water, and the plurality of acid flow holes 5 are arranged in an up-and-down staggered interval, and each acid flow hole 5 is installed with a blocking cover 6; a drainage hole 7 is also provided on the side where the supporting leg 4 is connected to the cushion bracket 3, and the drainage hole 7 is connected to the acid flow hole 5.

[0027] Specifically, in the production process of the metal chair frame, pickling plays a role in pre-wetting the solid grease and floating rust on the metal chair frame and washing off the dust adhering thereto, laying a foundation for thoroughly cleaning the metal chair frame. At the same time, the pickling liquid entering the metal chair frame can enhance the anti-corrosion ability of the metal chair frame. After the acid water is completed, water washing is required. The water washing is to clean the pickling liquid remaining in the metal chair frame. After the pickling and water washing are completed, the residues in the metal chair frame need to be removed. For this purpose, it is necessary to open an acid flow hole 5 on the metal chair frame. Since the armrest bracket 2 and the cushion bracket 3 are horizontally arranged, the acid flow hole 5 is arranged at the bottom thereof, so as to facilitate the discharge of the pickling liquid. The acid flow hole 5 is staggered up and down. The upper acid flow hole 5 can facilitate the flow of the acid liquid, and the lower acid flow hole 5 can quickly discharge the internal pickling liquid. The vertically arranged backrest bracket 1 and the support leg 4 are connected to the acid flow hole 5 through the drainage hole 7, so that the pickling liquid located in different parts can be uniformly discharged through the acid liquid.

[0028] It is worth noting that the blocking cover 6 covering the acid flow hole 5 not only serves as a decoration to enhance the appearance, but also prevents dust and other impurities from entering the metal frame.

[0029] In this embodiment, a cross beam 11 is further connected to the top of the backrest bracket 1 , and both ends of the cross beam 11 are fixedly connected to the backrest bracket 1 via screws 8 .

[0030] Specifically, the backrest bracket 1 is provided with the function of enhancing the supporting force and can also be used to fix the backboard, thereby improving the sitting comfort; and both ends of the crossbeam 11 are fixed to the backrest bracket 1 by screws 8, so that it can be disassembled, assembled and replaced according to needs.

[0031] In this embodiment, if Figure 3 , 4 As shown, the cushion bracket 3 includes a cross bar 31 which is laterally arranged at the position corresponding to the support leg 4 and a vertical bar 32 connected between the cross bars 31. A plurality of threaded holes 311 with internal threads are provided at both ends of the cross bar 31. One side of the support leg 4 is fixed to the cross bar 31 by means of screws 8 passing through the threaded holes 311. Both ends of the vertical bar 32 are connected to the cross bar 31.

[0032] Specifically, in order to improve the load-bearing capacity of the seat cushion bracket 3, the seat cushion bracket 3 adopts a method of fixed connection between the cross bar 31 and the vertical bar 32, so that the gravity borne by the seat cushion bracket 3 is effectively dispersed to the cross bar 31 and the vertical bar 32, thereby improving its supporting force; and in order to quickly realize assembly, both ends of the vertical bar 32 connected to the cross bar 31 are connected by threaded connection, which is not only stable but also easy to disassemble, so that the position where the vertical bar 32 is obliquely connected to the cross bar 31 can be freely selected according to production requirements.

[0033] In this embodiment, the armrest bracket 2 is configured as an arc-shaped structure, and one end of the armrest bracket 2 is provided with a rivet to be fixedly connected to the backrest bracket 1, and the other end is connected to the support leg 4 located at the front side.

[0034] Specifically, in order to improve the comfort of sitting on the chair, an armrest bracket 2 is provided so that the armrest bracket 2 can support the hands when sitting on the chair, and the armrest bracket 2 is provided with an arc structure so that it can better fit the shape of the arm, thereby improving the sitting comfort.

[0035] In this embodiment, four support legs 4 are provided, wherein the support leg 4 located at the front side is fixedly connected to the armrest bracket 2, and the support leg 4 located at the rear side is fixedly welded to the welding bracket, and the welded support leg 4 is interconnected with the backrest bracket 1 to form an integrated structure.

[0036] Specifically, the front support leg 4 is at a different height from the rear support leg 4, wherein the front support leg 4 extends to the armrest bracket 2, and the rear support leg 4 extends to the backrest bracket 1, and is welded to form an integrated structure with the backrest bracket 1. The advantage of this is that it can improve the stability of the support leg 4 and accelerate the discharge process of the pickling liquid to prevent the pickling liquid from seeping into the gap at the connection to cause corrosion. At the same time, the front support leg 4 can also support the armrest bracket 2.

[0037] In this embodiment, a water leakage hole 41 is further provided at the bottom of the supporting leg 4 , and the water leakage hole 41 is communicated with the inner cavity of the supporting leg 4 .

[0038] Specifically, since the support legs 4 are vertically arranged, part of the acid water falls into the support legs 4 during the process of lifting and draining the acid water after the acid water is passed. Therefore, the leakage holes 41 are provided at the bottom of the support legs 4 to speed up the discharge of the acid water accumulated at the bottom.

[0039] In order to further improve the anti-corrosion performance of the chair frame, a paint layer is sprayed on the inner and outer surfaces of the backrest bracket 1, the armrest bracket 2, the seat cushion bracket 3 and the supporting leg 4. The painted metal chair frame can not only improve its service life, but also further prevent corrosion.

[0040] The working principle of this utility model:

[0041] In the process of producing the metal chair frame, the backrest bracket 1, the armrest bracket 2, the cushion bracket 3 and the supporting leg 4 are first spliced ​​together, and the pickling liquid is discharged through the acid flow holes 5 provided at the bottom of the armrest bracket 2 and the cushion bracket 3. After the discharge, the acid flow holes 5 are blocked with the sealing cover 6 to improve its aesthetics.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A metal chair frame, comprising a backrest support, an armrest support, a seat support and a support leg, characterized in that: The interiors of the backrest bracket, armrest bracket, seat cushion bracket and supporting leg are all hollow structures; the bottoms of the armrest bracket and the seat cushion bracket are provided with a plurality of acid flow holes for discharging acid water, the plurality of acid flow holes are arranged in an up-and-down staggered manner, and a sealing cover is installed on each acid flow hole; a drainage hole is also provided on the side of the supporting leg connected to the seat cushion bracket, and the drainage hole is connected to the acid flow hole.

2. The metal chair frame according to claim 1, characterized in that The top end of the backrest bracket is also connected with a crossbeam, and the two ends of the crossbeam are fixedly connected with the backrest bracket through screws.

3. The metal chair frame according to claim 2, characterized in that The seat cushion bracket includes a cross bar arranged laterally corresponding to the position of the supporting legs and a vertical bar connected between the cross bars. A plurality of threaded holes with internal threads are provided at both ends of the cross bar. The cross bar is fixed to the supporting leg by screws passing through the threaded holes on one side of the supporting leg; both ends of the vertical bar are connected to the cross bar.

4. The metal chair frame according to claim 3, characterized in that The armrest bracket is arranged in an arc-shaped structure, and one end of the armrest bracket is provided with a rivet to be fixedly connected with the backrest bracket, and the other end is communicated with the supporting leg located at the front side.

5. The metal chair frame according to claim 4, characterized in that The supporting legs are arranged in four numbers, wherein the supporting leg at the front side is fixedly connected to the armrest bracket, and the supporting leg at the rear side is fixedly connected to the welding bracket by welding, and the welded supporting leg and the backrest bracket are interconnected to form an integrated structure.

6. The metal chair frame according to claim 5, characterized in that The bottom of the supporting leg is also provided with a water leakage hole, and the water leakage hole is communicated with the inner cavity of the supporting leg.

7. The metal chair frame according to claim 6, characterized in that The inner and outer surfaces of the backrest bracket, the armrest bracket, the seat cushion bracket and the supporting legs are all sprayed with a paint layer.

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