Multi-angle fixing anti-deviation tool for sofa soft bag cover

Abstract

The present application belongs to sofa processing auxiliary equipment technical field, and disclose a kind of multi-angle fixed deviation-preventing tool for sofa soft package covering, including sofa body, and fixed assembly is installed on sofa body, and sofa body includes base, and soft package cushion is detachably connected at the top of base, when the sofa soft package of the present application is installed, first, the limiting groove of soft package back cushion bottom is aligned with the limiting block of mounting seat and is inserted smoothly, during the process, soft package clamping block is slid into preset clamping slot along skeleton positioning seat, the inclined surface of clamping block and the inclined surface of first positioning block in clamping slot contact and generate force, so that first positioning block compression spring and move to movable slot, after clamping block is completely inserted, bayonet and first positioning block are aligned, spring releases elastic potential energy and pushes first positioning block into bayonet, complete the preliminary fixation of soft package and skeleton, while limiting block and limiting groove are closely embedded, anti-skid line increases the friction force of contact surface, realize to prevent soft package deviation in daily use, guarantee the effect of stable and safe use.

Description

Technical Field

[0001] This invention belongs to the technical field of sofa processing auxiliary equipment, specifically a multi-angle fixing and anti-displacement tooling for sofa upholstery covering. Background Technology

[0002] In the entire sofa manufacturing process, upholstery covering is a crucial core step, the quality of which directly determines the final sofa's aesthetic appearance and the user's actual comfort. Specifically, the upholstery covering process mainly refers to the process of tightly and smoothly attaching and firmly fixing pre-cut upholstery fabric to the sofa's internal frame through a series of operations. In this meticulous construction process, it is essential to first ensure that the sofa frame itself is in a stable and secure fixed state, which is the foundation for subsequent operations. At the same time, operators need to use professional skills and tools to carefully handle the upholstery fabric, ensuring that it is completely adhered to the frame surface, ensuring that the fabric is laid flat without any positional deviation, and that the surface is smooth without any wrinkles. This series of detailed controls together ensures the excellent and consistent overall quality of the sofa.

[0003] Publication number CN213664507U discloses an adjustable seat depth upholstered sofa, including symmetrically arranged support legs at the four corners of the bottom of the sofa seat cover, a backrest on the side of the sofa seat cover, and symmetrically arranged integrated armrests at both ends of the sofa seat cover. A touch screen is installed at the top of the integrated armrests, and a power cord is installed at the bottom of the integrated armrests. A controller is installed inside the upper part of the integrated armrests corresponding to the touch screen, and a drive motor is installed inside the lower part of the integrated armrests corresponding to the power cord. An adjustable seat depth device is installed inside the sofa seat cover, consisting of a limiting support plate, a first seat depth adjustment slot, a second seat depth adjustment slot, a third seat depth adjustment slot, a first electric telescopic column, a support top plate, a second electric telescopic column, springs, and filling material. This adjustable seat depth upholstered sofa has a simple structure, is easy to operate, offers multiple seat depth adjustments, protects health, and has excellent practicality.

[0004] While the aforementioned technologies enable multi-level adjustment of sofa upholstery depth, protecting health and offering excellent practicality, the existing fixtures have a relatively simple fixing method, only able to fix the sofa frame from a single direction. Furthermore, they lack a dedicated upholstery anti-displacement structure. During the upholstery covering process, the upholstery fabric is prone to sliding and shifting, leading to misalignment and wrinkles, which affects the sofa's processing quality. Summary of the Invention

[0005] To address the problem mentioned in the background art that the upholstery fabric is prone to slippage and displacement during the upholstery covering process, resulting in misalignment and wrinkles that affect the sofa manufacturing quality, this invention provides a multi-angle fixing and anti-displacement fixture for sofa upholstery covering.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-angle fixing and anti-displacement fixture for sofa upholstery covering, comprising a sofa body, wherein a fixing component is installed on the sofa body; The sofa body includes a base, a soft seat cushion is detachably connected to the top of the base, a frame is rotatably connected to the inner wall of the base, and a soft back cushion is detachably connected to the surface of the frame. The fixing assembly includes several mounting seats fixed to the frame. A limiting block is fixedly connected to the end of each mounting seat away from the frame. The bottom end of the soft pad has a sleeve opening. A limiting groove is fixedly connected to the inner wall of the sleeve opening, and the limiting groove is slidably connected to the limiting block. A positioning seat is fixedly connected to the bottom end of the limiting block. A slot is symmetrically opened at the top end of the positioning seat. A movable groove communicating with the two slots is opened inside the positioning seat. A force-bearing block is fixedly connected to the middle of the movable groove. Compression springs are symmetrically fixedly connected to both ends of the force-bearing block. A first positioning block is fixedly connected to the end of the compression spring away from the movable groove. A locking block is symmetrically fixedly connected to the bottom end of the limiting groove, and the locking block engages with the slot. A locking slot corresponding to the first positioning block is opened on the side end of the locking block, and the locking slot engages with the first positioning block.

[0007] Preferably, the first positioning block has a chamfered design, and the bayonet matches the first positioning block.

[0008] Preferably, the top of the base is fixedly connected with a plurality of limiting blocks and positioning seats, and the bottom of the soft cushion is fixedly connected with corresponding limiting grooves and locking blocks.

[0009] Preferably, the mounting bases are all fixed to the hard parts of the sofa body with screws, and the limiting grooves are all fixed to the soft upholstery of the sofa body.

[0010] Preferably, the fixing component is designed in multiple sizes to accommodate upholstery installation at different locations on the sofa body.

[0011] Preferably, the frame is rotatably connected to the base via an adjustment component. The adjustment component includes an insertion hole on the base, and a groove is provided at the end of the insertion hole away from the frame, into which a rotating shaft is inserted.

[0012] Preferably, the base has a slot at one end near the frame, and the rotating shaft is fixedly connected to a spline at one end near the slot, with the slot engaging with the spline.

[0013] Preferably, the end of the rotating shaft away from the spline is slidably connected to a rotating block that engages with the groove, and the end of the rotating block near the groove is fixedly connected to a plurality of second positioning blocks, and the groove is fixedly connected to a positioning groove corresponding to the second positioning block.

[0014] Preferably, the plurality of positioning slots are equidistantly arranged along the rearward rotation direction of the skeleton, and the skeleton rotates sequentially at equal angles.

[0015] Preferably, the contact surfaces of the limiting block and the limiting groove are provided with anti-slip textures, and the inner wall of the limiting groove is in close contact with the outer wall of the limiting block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When installing the sofa upholstery of this invention, the limiting groove at the bottom of the upholstery cushion is first aligned with the limiting block of the mounting base and smoothly slid in. During the process, the upholstery clip slides into the preset slot along the frame positioning seat. The inclined surface of the clip contacts the inclined surface of the first positioning block in the slot, generating a force that compresses the spring of the first positioning block and moves it into the movable slot. After the clip is fully inserted, the slot is aligned with the first positioning block, and the spring releases its elastic potential energy to push the first positioning block into the slot, completing the initial fixation of the upholstery and the frame. At the same time, the limiting block and the limiting groove fit tightly, and the anti-slip texture increases the friction of the contact surface. Multiple designs prevent the upholstery from shifting during daily use, ensuring stable and safe use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the sofa body and fixing components of the present invention; Figure 3 This is a schematic diagram of the limiting groove on the back of the sofa according to the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the adjustment component of the present invention; Figure 6 This is a schematic diagram of the internal structure of the positioning seat of the present invention.

[0018] In the picture: 1. Sofa body; 101. Base; 102. Upholstered seat cushion; 103. Upholstered back cushion; 104. Frame; 2. Fixing components; 201. Mounting base; 202. Limiting block; 203. Positioning base; 204. Limiting groove; 205. Locking block; 206. Locking slot; 207. Movable groove; 208. Force-bearing block; 209. Compression spring; 210. First positioning block; 211. Bay; 3. Adjustment components; 301. Insertion hole; 302. Groove; 303. Rotating shaft; 304. Rotating block; 305. Positioning groove; 306. Second positioning block; 307. Slot; 308. Spline. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 6 As shown, the present invention provides a multi-angle fixing and anti-displacement tooling for sofa upholstery covering, including a sofa body 1, on which a fixing component 2 is installed; The sofa body 1 includes a base 101, a soft cushion 102 detachably connected to the top of the base 101, a frame 104 rotatably connected to the inner wall of the base 101, and a soft back cushion 103 detachably connected to the surface of the frame 104. The fixing component 2 includes several mounting seats 201 fixed to the frame 104. A limiting block 202 is fixedly connected to the end of each mounting seat 201 away from the frame 104. A sleeve opening is provided at the bottom of the sleeve opening, and a limiting groove 204 is fixedly connected to the inner wall of the sleeve opening. The limiting groove 204 is slidably connected to the limiting block 202. A positioning seat 203 is fixedly connected to the bottom of the limiting block 202. A slot 206 is symmetrically provided at the top of the positioning seat 203, and a groove communicating with the slot 206 is provided inside the positioning seat 203. The movable groove 207 has a force-bearing block 208 fixedly connected in the middle. Compression springs 209 are fixedly connected symmetrically at both ends of the force-bearing block 208. A first positioning block 210 is fixedly connected to the end of the compression spring 209 away from the movable groove 207. A locking block 205 is fixedly connected symmetrically at the bottom end of the limiting groove 204, and the locking block 205 engages with the locking groove 206. A locking slot 211 corresponding to the first positioning block 210 is opened on the side end of the locking block 205, and the locking slot 211 engages with the first positioning block 210.

[0021] The contact surfaces of the limiting block 202 and the limiting groove 204 are both provided with anti-slip textures, and the inner wall of the limiting groove 204 is in close contact with the outer wall of the limiting block 202.

[0022] Using the above method: When installing the sofa upholstery, the pre-designed limiting groove 204 at the bottom of the upholstery cushion 103 can be accurately aligned with the corresponding limiting block 202 on the mounting base 201, and then smoothly slid in. During the sliding insertion process, the locking block 205 on the upholstery will gradually slide in along the top of the positioning base 203 of the frame 104, and finally insert into the preset locking groove 206. When the locking block 205 begins to enter the locking groove 206, the inclined surface on its side will first contact the corresponding inclined surface on the first positioning block 210 in the locking groove 206. After the two come into contact, they generate an interaction force. This force will squeeze the first positioning block 210, causing it to move inward toward the movable groove 207. As the first positioning block 210 moves, the compression spring 209 connected to it is under pressure and gradually compressed, storing elastic potential energy. Once the locking block 205 is fully inserted into the locking groove 206 and reaches the predetermined position, the locking block 205 will... The slot 211 on the surface will be perfectly aligned with the position of the first positioning block 210. At this time, since the external force pushing the locking block 205 disappears, the previously compressed compression spring 209 loses external pressure, and its stored elastic potential energy is quickly released, generating a rebound force, thereby pushing the first positioning block 210 to move outward and accurately lock into the slot 211 of the locking block 205. This action completes the initial connection and fixation between the bottom end of the soft cushion 103 and the bottom frame 104. At the same time, the limiting block 202 on the mounting base 201 and the limiting groove 204 of the soft cushion 103 fit tightly together, and there is no obvious gap between the two contact surfaces. Combined with the anti-slip texture specially set on the surface, the friction between the contact surfaces is greatly increased. This multi-fixing and anti-slip design can effectively reduce the possibility of the soft cushion 103 shifting position due to force or movement during daily use after installation, ensuring the stability and safety of use.

[0023] like Figures 1 to 6 As shown, the first positioning block 210 has a chamfered design, and the bayonet 211 matches the first positioning block 210. Several limiting blocks 202 and positioning seats 203 are fixedly connected to the top of the base 101. The bottom of the soft cushion 102 is fixedly connected to the corresponding limiting groove 204 and the locking block 205. The mounting base 201 is fixed to the hard body of the sofa body 1 with screws. The limiting groove 204 is fixed to the soft cushion on the sofa body 1. The fixing component 2 is designed in multiple sizes and is suitable for the installation of soft cushions in different positions on the sofa body 1.

[0024] Using the above solution, the installation of the sofa upholstery is extremely simple and quick: First, the pre-designed limiting groove 204 on the edge of the upholstery needs to be precisely aligned with the corresponding limiting block 202 on the base 101. Next, the locking block 205 on the upholstery is aligned with the locking groove 206 on the positioning seat 203 and gently pushed in. This series of actions immediately achieves the initial positioning and stable locking of the upholstery, ensuring a secure installation. The entire installation process requires no additional tightening tools such as screwdrivers or wrenches, and eliminates the tedious steps of repeatedly adjusting the alignment. Even single-person operation can be quick and easy. The installation task is completed, which significantly reduces the actual operation difficulty of installing sofa upholstery on site and greatly improves the overall installation efficiency. In addition, the design adopts multi-size adjustable fixing components 2. This structure can flexibly adapt to various upholstery components of different areas and sizes on the sofa body 1, greatly enhancing the system's adaptability and versatility. It is particularly worth mentioning that the chamfer design on the component makes the first positioning block 210 enter the bayonet 211 more smoothly and freely, effectively avoiding common problems such as jamming or positioning difficulties, further reducing the technical threshold of installation operation and making the entire installation process easier and more convenient.

[0025] like Figures 3 to 5 As shown, the frame 104 is rotatably connected to the base 101 via the adjustment component 3. The adjustment component 3 includes an insertion hole 301 on the base 101. A groove 302 is provided at the end of the insertion hole 301 away from the frame 104. A rotating shaft 303 is inserted into the groove 302. A slot 307 is provided at the end of the base 101 near the frame 104. A spline 308 is fixedly connected at the end of the rotating shaft 303 near the slot 307, and the slot 307 engages with the spline 308. A rotating block 304 that engages with the groove 302 is slidably connected at the end of the rotating shaft 303 away from the spline 308. A plurality of second positioning blocks 306 are fixedly connected at the end of the rotating block 304 near the groove 302. A positioning groove 305 corresponding to the second positioning block 306 is fixedly connected in the groove 302. The plurality of positioning grooves 305 are equidistantly arranged along the rearward rotation direction of the frame 104, and the frame 104 rotates sequentially at equal angles.

[0026] Using the above solution: During use, when it is necessary to adjust the angle of the frame 104, first pull the rotating block 304 outward to disengage the second positioning block 306 from the current positioning slot 305. At this time, the spline 308 structure is still fitted inside the slot 307 and will not be completely separated from the frame 104, thus maintaining partial connection and preventing components from falling off or misaligning. Next, the user can freely rotate the rotating block 304, which is connected to the frame 104 through the rotating shaft 303, thereby causing the frame 104 to rotate together and adjust its tilt position. When the frame 104 is rotated to the desired angle position, gently push the rotating block 304 inward to make the second positioning block 306 re-engage in the corresponding position. The skeleton 104 can be securely locked in the positioning groove 305 at this angle, completing the angle adjustment and fixation. This design allows users to flexibly adjust the tilt angle of the skeleton 104 according to the specific processing requirements, thereby achieving reliable fixation of the soft packaging material in multiple angle directions, which greatly facilitates the processing operation. In addition, through the cooperation of multiple sets of equidistantly distributed positioning grooves 305 and the second positioning block 306, it can be ensured that the skeleton 104 can be accurately positioned at fixed interval angles each time it rotates, so that the angle change of each adjustment is uniform and consistent, effectively reducing the adverse effects on the subsequent processing accuracy caused by the accumulation of angle deviation, and improving the overall processing accuracy and consistency.

[0027] Working principle and usage process of this invention: First, before the actual installation of the sofa upholstery, the fixing components 2 that are perfectly matched with the specific dimensions of the upholstery in different parts of the sofa must be selected. Then, the mounting base 201, the limiting block 202 and the positioning base 203 are fixedly and securely to the rigid structure of the base 101 and the rigid structure of the frame 104, respectively, using screws. Next, the corresponding limiting grooves 204 and the locking blocks 205 need to be pre-installed in the predetermined corresponding positions of the upholstered seat cushion 102 and the upholstered back cushion 103, thereby completing the pre-assembly and preparation of the entire installation fixture system. When entering the actual processing and installation stage, if it is necessary to adjust the processing angle of the soft cushion 103, the operator should first pull the rotating block 304 outwards by hand to make it drive the second positioning block 306 to smoothly disengage from the currently engaged positioning groove 305, releasing the original angle fixation state. Then, the rotating block 304 can be rotated freely. At this time, the rotating block 304 will transmit torque through the rotating shaft 303 rigidly connected to it, thereby driving the entire frame 104 to rotate around the axis, gradually adjusting its spatial posture until the frame 104 is rotated to the pre-set target processing angle. After the angle is adjusted to the correct position, the operator needs to push the rotating block 304 inwards steadily so that the second positioning block 306, under the action of the spring or guide structure, accurately and correctly engages in the positioning groove 305 corresponding to the new angle. Through this series of operations, the mechanical locking of the frame 104 at the target angle can be reliably achieved, thereby ensuring that the subsequent soft cushion material can be firmly and stably maintained at the required processing angle, providing an accurate angle basis for subsequent wrapping, sewing or fixing processes. After precisely adjusting the angle and ensuring it is securely locked, the pre-set limiting groove 204 on the side of the soft pack needs to be aligned with the corresponding limiting block 202 that has been securely installed on the equipment base 101 or main frame 104. After alignment, the soft pack is smoothly pushed in along the predetermined direction. During this pushing process, the locking block 205 designed on the soft pack will move accordingly and naturally slide into the matching locking groove 206 on the mounting base 201. When the locking block 205 slides into the locking groove 206, its front end will contact and press the first positioning block 210 installed on the side of the locking groove 206, causing the first positioning block 210 to move downward under force, thereby pressing the compression spring 209 set below it. This causes the spring to be compressed and accumulate elastic potential energy, continuing to push the soft pack until the locking block 205 completely reaches the predetermined final position in the locking groove 206. At this time, since the locking block 205 no longer applies pressure to the first positioning block 210, the compressed spring 209 will release its stored elastic potential energy and generate a rebound force. A force will quickly and powerfully spring the first positioning block 210 upwards and reset it. The ejected first positioning block 210 will precisely engage with the specially designed slot 211 on the locking block 205, thus forming a solid mechanical interlock and achieving the final locking and fixation of the soft package. The design of the entire locking mechanism relies first on the tight and non-slip fit between the limiting block 202 and the limiting groove 204, which constitutes the initial positioning and anti-displacement foundation. Combined with the engaging action of the first positioning block 210 and the slot 211 on the locking block 205, a second layer of protection is formed. This double fixing design can very effectively prevent any unexpected displacement, sliding or offset of the soft package in subsequent processing or under various working conditions in actual use, ensuring the stability and durability of the installation. After the soft package is completely and correctly installed and locked in place according to the above steps, the entire component is in a ready state and can be smoothly processed and assembled, or directly put into normal operation and use.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-angle fixing and anti-displacement fixture for sofa upholstery, comprising a sofa body (1), characterized in that: A fixing component (2) is installed on the sofa body (1); The sofa body (1) includes a base (101), a soft cushion (102) is detachably connected to the top of the base (101), a frame (104) is rotatably connected to the inner wall of the base (101), and a soft back cushion (103) is detachably connected to the surface of the frame (104). The fixing component (2) includes several mounting seats (201) fixed to the frame (104). A limiting block (202) is fixedly connected to the end of the mounting seat (201) away from the frame (104). The bottom end of the soft cushion (103) is provided with a sleeve opening. A limiting groove (204) is fixedly connected to the inner wall of the sleeve opening, and the limiting groove (204) is slidably connected to the limiting block (202). A positioning seat (203) is fixedly connected to the bottom end of the limiting block (202). The top end of the positioning seat (203) is symmetrically provided with slots (206). The positioning seat (203) has a groove that communicates with the two slots (206). The movable groove (207) has a force-bearing block (208) fixedly connected in the middle. Compression springs (209) are fixedly connected symmetrically at both ends of the force-bearing block (208). A first positioning block (210) is fixedly connected at the end of the compression spring (209) away from the movable groove (207). A locking block (205) is fixedly connected symmetrically at the bottom end of the limiting groove (204), and the locking block (205) engages with the locking groove (206). A locking slot (211) corresponding to the first positioning block (210) is opened on the side end of the locking block (205), and the locking slot (211) engages with the first positioning block (210).

2. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The first positioning block (210) is designed with chamfered corners, and the bayonet (211) matches the first positioning block (210).

3. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The top of the base (101) is fixedly connected with several limiting blocks (202) and positioning seats (203), and the bottom of the soft cushion (102) is fixedly connected with corresponding limiting grooves (204) and locking blocks (205).

4. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The mounting bases (201) are all fixed to the hard body of the sofa body (1) by screws, and the limiting grooves (204) are all fixed to the soft upholstery on the sofa body (1).

5. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The fixing component (2) is designed in multiple sizes and is suitable for soft upholstery installation at different positions on the sofa body (1).

6. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The frame (104) is rotatably connected to the base (101) via the adjustment component (3). The adjustment component (3) includes an insertion hole (301) on the base (101). A groove (302) is provided at the end of the insertion hole (301) away from the frame (104). A rotating shaft (303) is inserted into the groove (302).

7. The multi-angle fixing and anti-displacement fixture for sofa upholstery covering according to claim 6, characterized in that: The base (101) has a slot (307) at one end near the frame (104), and the rotating shaft (303) is fixedly connected to a spline (308) at one end near the slot (307), and the slot (307) and the spline (308) engage.

8. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 6, characterized in that: The rotating shaft (303) is slidably connected to a rotating block (304) that engages with a groove (302) at the end away from the spline (308). A plurality of second positioning blocks (306) are fixedly connected to the end of the rotating block (304) near the groove (302). A positioning groove (305) corresponding to the second positioning block (306) is fixedly connected inside the groove (302).

9. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 8, characterized in that: The multiple positioning slots (305) are equidistantly arranged along the rearward rotation direction of the skeleton (104), and the skeleton (104) rotates sequentially at equal angles.

10. The multi-angle fixing and anti-displacement fixture for sofa upholstery as described in claim 1, characterized in that: The contact surfaces of the limiting block (202) and the limiting groove (204) are both provided with anti-slip textures, and the inner wall of the limiting groove (204) is in close contact with the outer wall of the limiting block (202).

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