Seat facilitating assembly

Abstract

The application discloses a seat facilitating assembly, which comprises a backrest and a chassis, the backrest comprises a mounting plate at the bottom, the chassis comprises a tail plate at the back side for connecting the mounting plate, the tail plate is a U-shaped sheet metal structure as a whole, the tail plate comprises a bottom plate at the bottom, the bottom plate and the mounting plate are connected through a positioning assembly, the positioning assembly comprises a positioning piece and a positioning groove, the positioning piece is arranged on one of the bottom plate and the mounting plate, and the positioning groove is arranged on the other one of the bottom plate and the mounting plate; the positioning piece is in a stepped structure and comprises a limiting part with a larger width and a movable part with a smaller width, the positioning groove is a special-shaped groove and comprises an avoiding part with a larger width and a locking part with a smaller width, and the width of the limiting part is smaller than that of the avoiding part and larger than that of the locking part. The seat facilitating assembly provided by the application is movable in the positioning groove through the positioning piece, not only can guide the mounting plate to be mounted to the guide plate, so that the assembly operation between the two is more stable, but also can make the assembly operation more labor-saving and simple.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and more specifically to a chair that is easy to assemble. Background Technology

[0002] Chairs are common pieces of furniture used in daily life to support users while they sit. In the office sector, in addition to providing basic seating, office chairs with reclining adjustment functions are widely favored by consumers. The backrest of these chairs can be adjusted up and down, meaning that users can recline the backrest when they need to rest, thus comfortably resting in a reclining position on the office chair.

[0003] This type of office chair consists of several parts: a backrest, a seat, a base, and legs. The base is located at the bottom of the seat and connects the legs and backrest to the seat. The base includes a rear panel that can rotate up and down. The backrest includes a mounting plate that tilts forward at the bottom. The mounting plate and the rear panel are screwed together, allowing the backrest to rotate up and down relative to the seat along with the rear panel. To save on packaging and transportation costs, the backrest, seat, and base are usually packaged separately.

[0004] However, when users receive the seat and begin assembly, the backrest and chassis are tilted relative to each other, making it difficult to position the mounting plate and tail plate properly. Users need to hold the backrest or chassis upright with one hand and screw the mounting plate and tail plate in with the other, making the seat assembly process very troublesome and laborious. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a seat that is easy to assemble. With the help of a positioning member moving in the positioning groove, it not only guides the mounting plate to be installed onto the guide plate, making the assembly operation between the two more stable, but also, after the mounting plate and the guide plate are aligned, the positioning member engages with the positioning groove to initially position the mounting plate and the guide plate. That is, during the assembly process, the user does not need to hold the backrest or the chassis with one hand, and can perform the fixed connection operation between the mounting plate and the guide plate with one hand, thereby making the assembly operation more labor-saving and convenient.

[0006] The effect of this utility model is achieved as follows: This application provides a seat that is easy to assemble, including a backrest and a chassis. The backrest includes a mounting plate at the bottom, and the chassis includes a tail plate at the rear for connecting the mounting plate. The tail plate has a U-shaped sheet metal structure and includes a bottom plate at the bottom. The bottom plate and the mounting plate are connected by a positioning assembly. The positioning assembly includes a positioning element and a positioning groove. The positioning element is disposed in one of the bottom plate and the mounting plate, and the positioning groove is formed in the other of the bottom plate and the mounting plate. The positioning element has a stepped structure, including a wider limiting part and a narrower movable part. The positioning groove is an irregular groove, including a wider clearance part and a narrower locking part. The width of the limiting part is smaller than that of the clearance part and larger than that of the locking part. When assembling the seat, first insert the mounting plate into the tail plate, the positioning part passes through the clearance part, and then push the mounting plate forward to align with the base plate. The moving part engages with the locking part, and the limiting part abuts against the slot of the locking part, so that the base plate and the mounting plate are fixed relative to each other in the vertical direction.

[0007] Furthermore, the base plate has a perforated positioning groove, and the bottom of the mounting plate is detachably connected to a positioning component. This allows the user to easily observe the assembly progress, and the positioning component and mounting plate can be manufactured separately before assembly, resulting in lower costs and easier processing.

[0008] Furthermore, the positioning element is a screw, with the nut portion serving as a limiting part and the screw portion serving as a movable part. The mounting plate has several first threaded holes, and the positioning element and these first threaded holes are threadedly engaged. Besides being used to position the mounting plate in conjunction with the positioning groove, the positioning element can also be used to fix the mounting plate and the tail plate, thereby further improving the connection strength between the mounting plate and the tail plate and enhancing the ease of assembly.

[0009] Furthermore, the mounting plate and the tail plate are connected by at least two sets of positioning elements and positioning slots. This further enhances the connection strength between the mounting plate and the tail plate, and makes the assembly operation between them smoother and more stable.

[0010] Furthermore, the mounting plate is a curved plate-like structure, including a forward-extending insertion portion and a rear vertical support portion. The insertion portion is configured to connect to the tail plate, and the support portion is configured to connect to the backrest. The insertion portion and the support portion are connected by a curved portion, which bends downward relative to the insertion portion. When the insertion portion is fitted against the base plate, the curved portion abuts against the rear end of the base plate. This makes the positioning of the insertion portion more precise, facilitating subsequent screw-on fixing operations.

[0011] Furthermore, the tailplate includes vertical sections on both sides, and a guide structure is provided on the tailplate. The guide structure includes a guide part arranged horizontally in the vertical section. The gap between the guide part and the base plate in the vertical direction forms a guide groove, through which the mounting plate is snapped into the tailplate. The guide groove formed between the guide part and the base plate guides the mounting plate into the tailplate, restricting the direction of movement of the mounting plate, thereby making the assembly operation between the mounting plate and the tailplate smoother and more stable.

[0012] Furthermore, the guide section is inclined relative to the base plate, with the inclination direction from front to back and from low to high. When assembling the mounting plate, simply align the mounting plate with the guide groove and insert it forward to automatically complete the snap-fit ​​positioning operation between the positioning component and the positioning groove, further improving the stability and ease of assembly operations between the mounting plate and the tail plate.

[0013] Furthermore, the guiding structure includes two symmetrical guiding components, each a bent L-shaped structure. Each component includes a horizontally positioned guiding section and a vertical mounting section. The mounting section fits snugly against the vertical section, and the two sections are connected by screws. The guiding components and the tailplate can be manufactured separately, resulting in lower costs. Additionally, the vertical sections on both sides are equipped with guiding sections that restrict the mounting plates, making the installation of the mounting plates more stable.

[0014] Furthermore, a connecting groove is formed in the vertical section, the mounting part fits against the outer wall of the vertical section, and the guide part passes through the connecting groove into the interior of the tail plate. This avoids the mounting part occupying the internal space of the tail plate and affecting the assembly of the mounting plate, and makes the connection strength between the guide and the tail plate higher. The connecting groove can also be used to position the guide part, ensuring that the guide parts on both sides are on the same plane after installation.

[0015] The assembly-friendly seat provided in this application, through the inclusion of a positioning component, allows the positioning element to smoothly pass through the positioning groove during the assembly of the backrest and chassis, thanks to the wider clearance portion. This enables the mounting plate to be smoothly inserted into the rear panel and aligned with the base plate. Furthermore, the narrower locking portion allows the mounting plate to be pushed further forward until it aligns with the base plate. The movable portion engages with the locking portion, and the limiting portion abuts against the groove of the locking portion, preventing the positioning element from disengaging vertically from the positioning groove. This ensures that the base plate and mounting plate are relatively fixed vertically. Thus, the movement of the positioning element within the positioning groove not only guides the mounting plate to the guide plate, making the assembly process smoother, but also, after the mounting plate and guide plate are aligned, the positioning element engages with the positioning groove, initially positioning the mounting plate and guide plate. This means that during assembly, the user does not need to hold the backrest or chassis with one hand; they can perform the fixing and connection operation between the mounting plate and guide plate with one hand, making the assembly process more effortless and convenient. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A three-dimensional structural diagram of the seat provided in an embodiment of this application; Figure 2 This is a schematic diagram of the backrest structure of the seat provided in an embodiment of this application; Figure 3 A schematic diagram of the connection structure between the mounting plate with the positioning component pre-installed and the tail plate provided in the embodiments of this application; Figure 4 A schematic diagram of the connection structure between the mounting plate and the tail plate when the positioning member passes through the clearance part according to an embodiment of this application; Figure 5 A schematic diagram of the connection structure between the mounting plate and the tail plate when the active part is engaged with the locking part according to an embodiment of this application; Figure 6 A schematic diagram of the connection structure between the tail plate and the mounting plate when the tail plate is equipped with a guide member, as provided in an embodiment of this application; Figure 7 This is a schematic diagram of the connection structure between the guide and the tail plate provided in an embodiment of this application; Figure 8 This is a schematic diagram illustrating the changes during the installation of the mounting component provided in the embodiments of this application.

[0017] The reference numerals in the attached drawings are as follows: 1-Mounting plate, 101-First threaded hole, 102-Second threaded hole, 110-Plug-in part, 120-Support part, 130-Bending part, 2-Tail plate, 201-Guide groove, 210-Base plate, 211-Through hole, 220-Positioning groove, 221-Allowing part, 222-Locking part, 230-Vertical part, 231-Connecting groove, 3-Positioning component, 310-Limiting part, 320-Moving part, 4-Guide component, 410-Guide part, 420-Mounting part, 5-Backrest, 6-Chassis. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0019] Please refer to the attached document. Figure 1-8This application provides an assembly-friendly seat, including a backrest 5 and a chassis 6. The backrest 5 includes a mounting plate 1 at the bottom, and the chassis 6 includes a tail plate 2 on the rear side for connecting the mounting plate 1. The tail plate 2 has a U-shaped sheet metal structure and includes a bottom plate 210 at the bottom. The bottom plate 210 and the mounting plate 1 are connected by a positioning component. The positioning component includes a positioning element 3 and a positioning groove 220. The positioning element 3 is disposed in one of the bottom plate 210 and the mounting plate 1, and the positioning groove 220 is formed in the other of the bottom plate 210 and the mounting plate 1. The positioning element 3 has a stepped structure, including a wider limiting part 310 and a narrower movable part 320. The positioning groove 220 is an irregular groove, including a wider clearance part 221 and a narrower locking part 222. The width of the limiting part 310 is smaller than that of the clearance part 221 and larger than that of the locking part 222. When assembling the seat, first insert the mounting plate 1 into the tail plate 2, the positioning member 3 passes through the clearance part 221, and then push the mounting plate 1 forward to align with the base plate 210. The movable part 320 is inserted into the locking part 222, and the limiting part 310 abuts against the slot of the locking part 222, so that the base plate 210 and the mounting plate 1 are relatively fixed in the vertical direction.

[0020] In this embodiment, by setting a positioning component, when the backrest 5 and the chassis 6 are assembled, the positioning member 3 can pass smoothly through the positioning groove 220 with the help of the wider clearance part 221. That is, the mounting plate 1 can be smoothly installed into the tail plate 2 and fit against the bottom plate 210. With the help of the narrower locking part 222, the mounting plate 1 can be pushed forward to align with the bottom plate 210. The movable part 320 is engaged with the locking part 222, and the limiting part 310 abuts against the groove position of the locking part 222. The positioning member 3 cannot disengage from the positioning groove 220 in the vertical direction, so that the bottom plate 210 and the mounting plate 1 are relatively fixed in the vertical direction. Therefore, by using the positioning element 3 to move within the positioning groove 220, not only is the mounting plate 1 guided to the guide plate 2, making the assembly operation between the two more stable, but also, after the mounting plate 1 and the guide plate 2 are aligned, the positioning element 3 engages with the positioning groove 220 to initially position the mounting plate 1 and the guide plate 2. That is, during the assembly process, the user does not need to hold the backrest 5 or the chassis 6 with one hand, and can perform the fixed connection operation between the mounting plate 1 and the guide plate 2 with one hand, thus making the assembly operation more labor-saving and convenient.

[0021] The mounting plate 1 and the tail plate 2 are fixed together by screws. The mounting plate 1 has several second threaded holes 102, and the base plate 210 has several through holes 211. When the mounting plate 1 is aligned with the base plate 210, the second threaded holes 102 are aligned with the through holes 211. Screws are screwed into the through holes 211 and threaded into the second threaded holes 102, thereby fixing the mounting plate 1 to the tail plate 2. This not only simplifies the assembly of the mounting plate 1 and the tail plate 2 but also provides a high connection strength.

[0022] Please refer to the attached document. Figure 3 In some embodiments of this application, a positioning groove 220 is formed on the base plate 210, and a positioning member 3 is detachably connected to the bottom of the mounting plate 1.

[0023] In this embodiment, by hollowing out the positioning groove 220 on the base plate 210, the positioning component 3 will be exposed at the bottom of the base plate 210 after the mounting plate 1 is connected to the tail plate 2, so that the user can easily observe the assembly progress. The positioning component 3 is detachably connected to the mounting plate 1, so that the positioning component 3 and the mounting plate 1 can be manufactured separately and then assembled, which is less costly and easier to process.

[0024] Of course, in other embodiments of this application, the positioning member 3 can also be installed on the base plate 210, and the bottom of the mounting plate 1 is provided with a positioning groove 220.

[0025] Please refer to the attached document. Figure 3 In some embodiments of this application, the positioning element 3 is a screw, the nut part of the positioning element 3 is configured as a limiting part 310, the screw part of the positioning element 3 is configured as a movable part 320, and a plurality of first threaded holes 101 are provided on the mounting plate 1, and the positioning element 3 and the first threaded holes 101 are threadedly engaged.

[0026] In this embodiment, by using screws, the positioning element 3 is not only inexpensive and easy to install onto the mounting plate 1, but also, as shown in the attached... Figure 3 As shown, before assembling the seat, the positioning part 3 can be pre-installed onto the mounting plate 1, and the movable part 320 can be screwed into the first threaded hole 101, leaving a gap between the limiting part 310 and the mounting plate 1 for mating with the positioning groove 220; as shown in the attached figure. Figure 5 As shown, when the mounting plate 1 is aligned with the base plate 210, the movable part 320 is further screwed in, so that the limiting part 310 is pressed downward and the base plate 210 is clamped to the mounting plate 1. That is, in addition to being used to position the mounting plate 1 in conjunction with the positioning groove 220, the positioning part 3 can also be used to fix the mounting plate 1 and the tail plate 2, thereby further improving the connection strength between the mounting plate 1 and the tail plate 2 and improving the ease of assembly operation.

[0027] Please refer to the attached document. Figure 2-3 In some embodiments of this application, the mounting plate 1 and the tail plate 2 are connected by at least two sets of positioning elements 3 and positioning grooves 220. This further enhances the connection strength between the mounting plate 1 and the tail plate 2, and makes the assembly operation between them more stable and smooth.

[0028] Preferably, two sets of positioning components 3 and positioning grooves 220 are provided between the mounting plate 1 and the tail plate 2, which ensures the connection strength while making the processing and manufacturing more convenient.

[0029] Of course, in other embodiments of this application, the number of positioning elements 3 and positioning grooves 220 between the mounting plate 1 and the tail plate 2 can be three, four, five, etc.

[0030] Please refer to the attached document. Figure 6 and attached Figure 8 In some embodiments of this application, the mounting plate 1 is a curved plate structure, including a forward-extending insertion portion 110 and a rear vertical support portion 120. The insertion portion 110 is configured to connect to the tail plate 2, and the support portion 120 is configured to connect to the backrest 5. The insertion portion 110 and the support portion 120 are connected by a bending portion 130. The bending portion 130 bends downward relative to the insertion portion 110. When the insertion portion 110 is attached to the base plate 210, the bending portion 130 abuts against the rear end of the base plate 210.

[0031] In this embodiment, the positioning member 3 is disposed on the insertion part 110. When the insertion part 110 is attached to the base plate 210, the bent part 130 abuts against the rear end of the base plate 210, thereby preventing the insertion part 110 from sliding forward further, making the positioning of the insertion part 110 more accurate and facilitating subsequent screw fixing operations.

[0032] Please refer to the attached document. Figure 6-8 In some embodiments of this application, the tail plate 2 includes vertical portions 230 on both sides. A guide structure is provided on the tail plate 2, including a guide portion 410 horizontally disposed in the vertical portions 230. The gap between the guide portion 410 and the base plate 210 in the vertical direction forms a guide groove 201. The mounting plate 1 is snapped onto the tail plate 2 through the guide groove 201. The guide groove 201 formed between the guide portion 410 and the base plate 210 guides the mounting plate 1 into the tail plate 2, restricting the direction of movement of the mounting plate 1, thereby making the assembly operation between the mounting plate 1 and the tail plate 2 smoother and more stable.

[0033] Please refer to the attached document. Figure 6-8 In some embodiments of this application, the guide portion 410 is inclined relative to the base plate 210, and the inclination direction is from front to back and from low to high.

[0034] In this embodiment, by tilting the guide portion 410, when the mounting plate 1 moves forward along the guide groove 201, it will also move downward in the vertical direction along the tilted guide portion 410. (See attached diagram) Figure 7 As shown, when the guide part 410 moves forward, the positioning part 3 at the bottom of the mounting plate 1 also moves diagonally downward, so that it first engages with the clearance part 221, and then slides further to engage with the locking part 222 in the movable part 320. That is, when assembling the mounting plate 1, it is only necessary to align the mounting plate 1 with the guide groove 201 and insert it forward to automatically complete the engagement and positioning operation between the positioning part 3 and the positioning groove 220, further improving the stability and ease of assembly operation between the mounting plate 1 and the tail plate 2.

[0035] Please refer to the attached document. Figure 6-8 In some embodiments of this application, the guide structure includes two symmetrical guide members 4. Each guide member 4 is a bent L-shaped structure, including a horizontally arranged guide portion 410 and a vertical mounting portion 420. The mounting portion 420 fits against the vertical portion 230, and the mounting portion 420 and the vertical portion 230 are connected by screws. The guide member 4 has a simple L-shaped structure, and it is detachably connected to the vertical portion 230. This means the guide member 4 and the tail plate 2 can be manufactured separately, resulting in lower costs. Furthermore, by providing two guide members 4 on the left and right sides, i.e., guide portions 410 are provided on both sides of the vertical portion 230 to restrict the mounting plate 1, the installation operation of the mounting plate 1 becomes more stable.

[0036] Please refer to the attached document. Figure 6-8 In some embodiments of this application, a connecting groove 231 is formed in the vertical part 230. The mounting part 420 is attached to the outer wall of the vertical part 230, and the guide part 410 passes through the connecting groove 231 into the interior of the tail plate 2. The mounting part 420 occupies part of the space in the horizontal direction. By attaching the mounting part 420 to the outer wall of the vertical part 230, the mounting part 420 is prevented from occupying the internal space of the tail plate 2 and affecting the assembly of the mounting plate 1. Furthermore, the guide part 410 is engaged with the vertical part 230 through the connecting groove 231, which not only makes the connection strength between the guide 4 and the tail plate 2 higher, but also allows the guide part 410 to be positioned by means of the connecting groove 231, ensuring that the guide parts 410 on both sides are located on the same plane after installation.

[0037] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means three or more.

[0038] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A seat that is easy to assemble, characterized in that, The backrest (5) includes a backrest (5) and a chassis (6). The backrest (5) includes a bottom mounting plate (1). The chassis (6) includes a rear end plate (2) for connecting the mounting plate (1). The rear end plate (2) has a U-shaped sheet metal structure. The rear end plate (2) includes a bottom plate (210) located at the bottom. The bottom plate (210) and the mounting plate (1) are connected by a positioning assembly. The positioning assembly includes a positioning element (3) and a positioning groove (220). The positioning element (3) is disposed on the bottom plate (210) and the mounting plate (1). One of the mounting plates (1), the positioning groove (220) is formed in the other of the base plate (210) and the mounting plate (1); the positioning member (3) has a stepped structure, including a wider limiting part (310) and a narrower movable part (320), the positioning groove (220) is an irregular groove, including a wider clearance part (221) and a narrower locking part (222), the width of the limiting part (310) is smaller than the clearance part (221) and larger than the locking part (222). When assembling the seat, first insert the mounting plate (1) into the tail plate (2), the positioning member (3) passes through the clearance part (221), and then push the mounting plate (1) forward to align with the base plate (210). The movable part (320) is inserted into the locking part (222), and the limiting part (310) abuts against the slot of the locking part (222), so that the base plate (210) and the mounting plate (1) are fixed relative to each other in the vertical direction.

2. The assembly-friendly seat according to claim 1, characterized in that, The base plate (210) has a hollowed-out positioning groove (220), and the bottom of the mounting plate (1) is detachably connected to the positioning element (3).

3. The assembly-friendly seat according to claim 2, characterized in that, The positioning element (3) is a screw. The nut part of the positioning element (3) is configured as a limiting part (310), and the screw part of the positioning element (3) is configured as a movable part (320). The mounting plate (1) has a plurality of first threaded holes (101). The positioning element (3) and the first threaded holes (101) are threaded together.

4. The assembly-friendly seat according to claim 1, characterized in that, The mounting plate (1) and the tail plate (2) are connected by at least two sets of positioning elements (3) and positioning grooves (220).

5. The assembly-friendly seat according to claim 1, characterized in that, The mounting plate (1) is a curved plate structure, including a forward-extending insertion part (110) and a rear vertical support part (120). The insertion part (110) is configured to connect to the tail plate (2), and the support part (120) is configured to connect to the backrest (5). The insertion part (110) and the support part (120) are connected by a curved part (130). The curved part (130) bends downward relative to the insertion part (110). When the insertion part (110) is attached to the base plate (210), the curved part (130) abuts against the rear end of the base plate (210).

6. The assembly-friendly seat according to claim 1, characterized in that, The tail plate (2) includes vertical sections (230) on both sides. A guide structure is provided on the tail plate (2). The guide structure includes a guide section (410) arranged horizontally on the vertical section (230). The guide section (410) and the base plate (210) form a guide groove (201) in the vertical direction. The mounting plate (1) is snapped onto the tail plate (2) through the guide groove (201).

7. The assembly-friendly seat according to claim 6, characterized in that, The guide section (410) is inclined relative to the base plate (210) in the direction of inclination from front to back and from low to high.

8. The assembly-friendly seat according to claim 6, characterized in that, The guiding structure includes two symmetrical guide members (4). The guide member (4) is a bent L-shaped structure, including a horizontally arranged guide part (410) and a vertical mounting part (420). The mounting part (420) fits into the vertical part (230), and the mounting part (420) and the vertical part (230) are connected by screws.

9. The assembly-friendly seat according to claim 8, characterized in that, The vertical part (230) has a hollowed-out connecting groove (231), the mounting part (420) is attached to the outer side wall of the vertical part (230), and the guide part (410) passes through the connecting groove (231) into the interior of the tail plate (2).

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